From 1712cde28532d9b0c98142e08a131b344d3200bd Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Sat, 28 May 2011 10:36:29 -0700 Subject: mtd: convert vmalloc/memset to vzalloc Signed-off-by: Joe Perches Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index fd78853..5e5423b 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -1374,11 +1374,10 @@ static int mtdswap_init(struct mtdswap_dev *d, unsigned int eblocks, goto revmap_fail; eblk_bytes = sizeof(struct swap_eb)*d->eblks; - d->eb_data = vmalloc(eblk_bytes); + d->eb_data = vzalloc(eblk_bytes); if (!d->eb_data) goto eb_data_fail; - memset(d->eb_data, 0, eblk_bytes); for (i = 0; i < pages; i++) d->page_data[i] = BLOCK_UNDEF; -- cgit v0.10.2 From 1c3bd14bb0e10ce69761662d575d454f12070838 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 31 May 2011 21:20:53 +0800 Subject: mtd: onenand: return proper error if regulator_get fails Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c index a916dec..0d9073d 100644 --- a/drivers/mtd/onenand/omap2.c +++ b/drivers/mtd/onenand/omap2.c @@ -741,6 +741,7 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev) c->regulator = regulator_get(&pdev->dev, "vonenand"); if (IS_ERR(c->regulator)) { dev_err(&pdev->dev, "Failed to get regulator\n"); + r = PTR_ERR(c->regulator); goto err_release_dma; } c->onenand.enable = omap2_onenand_enable; -- cgit v0.10.2 From a0dc552951dcbb2b28a8a2ffb5fa966613e8c025 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:20 -0700 Subject: mtd: nand: remove NAND_BBT_SCANBYTE1AND6 option This patch reverts most of: commit 58373ff0afff4cc8ac40608872995f4d87eb72ec mtd: nand: more BB Detection refactoring and dynamic scan options According to the discussion at: http://lists.infradead.org/pipermail/linux-mtd/2011-May/035696.html the NAND_BBT_SCANBYTE1AND6 flag, although technically valid, can break some existing ECC layouts that use the 6th byte in the OOB for ECC data. Furthermore, we apparently do not need to scan both bytes 1 and 6 in the OOB region of the devices under consideration; instead, we only need to scan one or the other. Thus, the NAND_BBT_SCANBYTE1AND6 flag is at best unnecessary and at worst a regression. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index a46e9bb..bb2e24b 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -410,10 +410,11 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) else { nand_get_device(chip, mtd, FL_WRITING); - /* Write to first two pages and to byte 1 and 6 if necessary. - * If we write to more than one location, the first error - * encountered quits the procedure. We write two bytes per - * location, so we dont have to mess with 16 bit access. + /* + * Write to first two pages if necessary. If we write to more + * than one location, the first error encountered quits the + * procedure. We write two bytes per location, so we dont have + * to mess with 16 bit access. */ do { chip->ops.len = chip->ops.ooblen = 2; @@ -423,11 +424,6 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) ret = nand_do_write_oob(mtd, ofs, &chip->ops); - if (!ret && (chip->options & NAND_BBT_SCANBYTE1AND6)) { - chip->ops.ooboffs = NAND_SMALL_BADBLOCK_POS - & ~0x01; - ret = nand_do_write_oob(mtd, ofs, &chip->ops); - } i++; ofs += mtd->writesize; } while (!ret && (chip->options & NAND_BBT_SCAN2NDPAGE) && @@ -3131,16 +3127,6 @@ ident_done: *maf_id == NAND_MFR_MICRON)) chip->options |= NAND_BBT_SCAN2NDPAGE; - /* - * Numonyx/ST 2K pages, x8 bus use BOTH byte 1 and 6 - */ - if (!(busw & NAND_BUSWIDTH_16) && - *maf_id == NAND_MFR_STMICRO && - mtd->writesize == 2048) { - chip->options |= NAND_BBT_SCANBYTE1AND6; - chip->badblockpos = 0; - } - /* Check for AND chips with 4 page planes */ if (chip->options & NAND_4PAGE_ARRAY) chip->erase_cmd = multi_erase_cmd; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index ccbeaa1..5ffb9a4 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -114,28 +114,6 @@ static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_desc return -1; } - /* Check both positions 1 and 6 for pattern? */ - if (td->options & NAND_BBT_SCANBYTE1AND6) { - if (td->options & NAND_BBT_SCANEMPTY) { - p += td->len; - end += NAND_SMALL_BADBLOCK_POS - td->offs; - /* Check region between positions 1 and 6 */ - for (i = 0; i < NAND_SMALL_BADBLOCK_POS - td->offs - td->len; - i++) { - if (*p++ != 0xff) - return -1; - } - } - else { - p += NAND_SMALL_BADBLOCK_POS - td->offs; - } - /* Compare the pattern */ - for (i = 0; i < td->len; i++) { - if (p[i] != td->pattern[i]) - return -1; - } - } - if (td->options & NAND_BBT_SCANEMPTY) { p += td->len; end += td->len; @@ -167,13 +145,6 @@ static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) if (p[td->offs + i] != td->pattern[i]) return -1; } - /* Need to check location 1 AND 6? */ - if (td->options & NAND_BBT_SCANBYTE1AND6) { - for (i = 0; i < td->len; i++) { - if (p[NAND_SMALL_BADBLOCK_POS + i] != td->pattern[i]) - return -1; - } - } return 0; } @@ -1330,8 +1301,7 @@ static struct nand_bbt_descr bbt_mirror_no_bbt_descr = { .pattern = mirror_pattern }; -#define BBT_SCAN_OPTIONS (NAND_BBT_SCANLASTPAGE | NAND_BBT_SCAN2NDPAGE | \ - NAND_BBT_SCANBYTE1AND6) +#define BBT_SCAN_OPTIONS (NAND_BBT_SCANLASTPAGE | NAND_BBT_SCAN2NDPAGE) /** * nand_create_default_bbt_descr - [Internal] Creates a BBT descriptor structure * @this: NAND chip to create descriptor for diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 57cc0e6..08ffa21 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -98,8 +98,6 @@ struct nand_bbt_descr { #define NAND_BBT_SCAN2NDPAGE 0x00004000 /* Search good / bad pattern on the last page of the eraseblock */ #define NAND_BBT_SCANLASTPAGE 0x00008000 -/* Chip stores bad block marker on BOTH 1st and 6th bytes of OOB */ -#define NAND_BBT_SCANBYTE1AND6 0x00100000 /* The nand_bbt_descr was created dynamicaly and must be freed */ #define NAND_BBT_DYNAMICSTRUCT 0x00200000 /* The bad block table does not OOB for marker */ -- cgit v0.10.2 From 5fb1549dfc40f3b589dae560ea21535cdc5f64e0 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:21 -0700 Subject: mtd: nand: separate chip options / bbt_options This patch handles the problems we've been having with using conflicting flags from nand.h and bbm.h in the same nand_chip.options field. We should try to separate these two spaces a little more clearly, and so I have added a bbt_options field to nand_chip. Important notes about nand_chip fields: * bbt_options field should contain ONLY flags from bbm.h. They should be able to pass safely to a nand_bbt_descr data structure. - BBT option flags start with the "NAND_BBT_" prefix. * options field should contian ONLY flags from nand.h. Ideally, they should not be involved in any BBT related options. - NAND chip option flags start with the "NAND_" prefix. * Every flag should have a nice comment explaining what the flag is. While this is not yet the case on all existing flags, please be sure to write one for new flags. Even better, you can help document the code better yourself! Please try to follow these conventions to make everyone's lives easier. Among the flags that are being moved to the new bbt_options field throughout various drivers, etc. are: * NAND_BBT_SCANLASTPAGE * NAND_BBT_SCAN2NDPAGE and there will be more to come. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index bb2e24b..3a9a8fc 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -344,7 +344,7 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) struct nand_chip *chip = mtd->priv; u16 bad; - if (chip->options & NAND_BBT_SCANLASTPAGE) + if (chip->bbt_options & NAND_BBT_SCANLASTPAGE) ofs += mtd->erasesize - mtd->writesize; page = (int)(ofs >> chip->page_shift) & chip->pagemask; @@ -396,7 +396,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) uint8_t buf[2] = { 0, 0 }; int block, ret, i = 0; - if (chip->options & NAND_BBT_SCANLASTPAGE) + if (chip->bbt_options & NAND_BBT_SCANLASTPAGE) ofs += mtd->erasesize - mtd->writesize; /* Get block number */ @@ -426,7 +426,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) i++; ofs += mtd->writesize; - } while (!ret && (chip->options & NAND_BBT_SCAN2NDPAGE) && + } while (!ret && (chip->bbt_options & NAND_BBT_SCAN2NDPAGE) && i < 2); nand_release_device(mtd); @@ -3117,7 +3117,7 @@ ident_done: if ((chip->cellinfo & NAND_CI_CELLTYPE_MSK) && (*maf_id == NAND_MFR_SAMSUNG || *maf_id == NAND_MFR_HYNIX)) - chip->options |= NAND_BBT_SCANLASTPAGE; + chip->bbt_options |= NAND_BBT_SCANLASTPAGE; else if ((!(chip->cellinfo & NAND_CI_CELLTYPE_MSK) && (*maf_id == NAND_MFR_SAMSUNG || *maf_id == NAND_MFR_HYNIX || @@ -3125,7 +3125,7 @@ ident_done: *maf_id == NAND_MFR_AMD)) || (mtd->writesize == 2048 && *maf_id == NAND_MFR_MICRON)) - chip->options |= NAND_BBT_SCAN2NDPAGE; + chip->bbt_options |= NAND_BBT_SCAN2NDPAGE; /* Check for AND chips with 4 page planes */ if (chip->options & NAND_4PAGE_ARRAY) diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 5ffb9a4..5df01d8 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -517,7 +517,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, from = (loff_t)startblock << (this->bbt_erase_shift - 1); } - if (this->options & NAND_BBT_SCANLASTPAGE) + if (this->bbt_options & NAND_BBT_SCANLASTPAGE) from += mtd->erasesize - (mtd->writesize * len); for (i = startblock; i < numblocks;) { @@ -1301,7 +1301,6 @@ static struct nand_bbt_descr bbt_mirror_no_bbt_descr = { .pattern = mirror_pattern }; -#define BBT_SCAN_OPTIONS (NAND_BBT_SCANLASTPAGE | NAND_BBT_SCAN2NDPAGE) /** * nand_create_default_bbt_descr - [Internal] Creates a BBT descriptor structure * @this: NAND chip to create descriptor for @@ -1324,7 +1323,7 @@ static int nand_create_default_bbt_descr(struct nand_chip *this) printk(KERN_ERR "nand_create_default_bbt_descr: Out of memory\n"); return -ENOMEM; } - bd->options = this->options & BBT_SCAN_OPTIONS; + bd->options = this->bbt_options; bd->offs = this->badblockpos; bd->len = (this->options & NAND_BUSWIDTH_16) ? 2 : 1; bd->pattern = scan_ff_pattern; diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index c2b9ac4..42f70e2 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -449,6 +449,9 @@ struct nand_buffers { * @options: [BOARDSPECIFIC] various chip options. They can partly * be set to inform nand_scan about special functionality. * See the defines for further explanation. + * @bbt_options: [INTERN] bad block specific options. All options used + * here must come from bbm.h. By default, these options + * will be copied to the appropriate nand_bbt_descr's. * @badblockpos: [INTERN] position of the bad block marker in the oob * area. * @badblockbits: [INTERN] number of bits to left-shift the bad block @@ -509,6 +512,7 @@ struct nand_chip { int chip_delay; unsigned int options; + unsigned int bbt_options; int page_shift; int phys_erase_shift; -- cgit v0.10.2 From a40f73419f02e40555f692785ea1c1813d5b4c12 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:22 -0700 Subject: mtd: nand: consolidate redundant flash-based BBT flags This patch works with the following three flags from two headers (nand.h and bbm.h): (1) NAND_USE_FLASH_BBT (nand.h) (2) NAND_USE_FLASH_BBT_NO_OOB (nand.h) (3) NAND_BBT_NO_OOB (bbm.h) These flags are all related and interdependent, yet they were in different headers. Flag (2) is simply the combination of (1) and (3) and can be eliminated. This patch accomplishes the following: * eliminate NAND_USE_FLASH_BBT_NO_OOB (i.e., flag (2)) * move NAND_USE_FLASH_BBT (i.e., flag (1)) to bbm.h It's important to note that because (1) and (3) are now both found in bbm.h, they should NOT be used in the "nand_chip.options" field. I removed a small section from the mtdnand DocBook because it referes to NAND_USE_FLASH_BBT in nand.h, which has been moved to bbm.h. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl index 17910e2..05cc83e 100644 --- a/Documentation/DocBook/mtdnand.tmpl +++ b/Documentation/DocBook/mtdnand.tmpl @@ -572,7 +572,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip) The simplest way to activate the FLASH based bad block table support - is to set the option NAND_USE_FLASH_BBT in the option field of + is to set the option NAND_USE_FLASH_BBT in the bbt_option field of the nand chip structure before calling nand_scan(). For AG-AND chips is this done by default. This activates the default FLASH based bad block table functionality @@ -1158,9 +1158,6 @@ in this page These constants are defined in nand.h. They are ored together to describe the functionality. -/* Use a flash based bad block table. This option is parsed by the - * default bad block table function (nand_default_bbt). */ -#define NAND_USE_FLASH_BBT 0x00010000 /* The hw ecc generator provides a syndrome instead a ecc value on read * This can only work if we have the ecc bytes directly behind the * data bytes. Applies for DOC and AG-AND Renesas HW Reed Solomon generators */ diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index 84fd786..a790c1b 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -377,7 +377,7 @@ static struct davinci_nand_pdata da830_evm_nand_pdata = { .nr_parts = ARRAY_SIZE(da830_evm_nand_partitions), .ecc_mode = NAND_ECC_HW, .ecc_bits = 4, - .options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_USE_FLASH_BBT, .bbt_td = &da830_evm_nand_bbt_main_descr, .bbt_md = &da830_evm_nand_bbt_mirror_descr, .timing = &da830_evm_nandflash_timing, diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c index bd53945..de27111 100644 --- a/arch/arm/mach-davinci/board-da850-evm.c +++ b/arch/arm/mach-davinci/board-da850-evm.c @@ -225,7 +225,7 @@ static struct davinci_nand_pdata da850_evm_nandflash_data = { .nr_parts = ARRAY_SIZE(da850_evm_nandflash_partition), .ecc_mode = NAND_ECC_HW, .ecc_bits = 4, - .options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_USE_FLASH_BBT, .timing = &da850_evm_nandflash_timing, }; diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c index 241a6bd..fd2de2c 100644 --- a/arch/arm/mach-davinci/board-dm355-evm.c +++ b/arch/arm/mach-davinci/board-dm355-evm.c @@ -77,7 +77,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), .ecc_mode = NAND_ECC_HW, - .options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_USE_FLASH_BBT, .ecc_bits = 4, }; diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c index bee284c..cfbd897 100644 --- a/arch/arm/mach-davinci/board-dm355-leopard.c +++ b/arch/arm/mach-davinci/board-dm355-leopard.c @@ -74,7 +74,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), .ecc_mode = NAND_ECC_HW_SYNDROME, - .options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_USE_FLASH_BBT, }; static struct resource davinci_nand_resources[] = { diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c index 9818f21..e66116d 100644 --- a/arch/arm/mach-davinci/board-dm365-evm.c +++ b/arch/arm/mach-davinci/board-dm365-evm.c @@ -139,7 +139,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), .ecc_mode = NAND_ECC_HW, - .options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_USE_FLASH_BBT, .ecc_bits = 4, }; diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c index 95607a1..dde2049 100644 --- a/arch/arm/mach-davinci/board-dm644x-evm.c +++ b/arch/arm/mach-davinci/board-dm644x-evm.c @@ -150,7 +150,7 @@ static struct davinci_nand_pdata davinci_evm_nandflash_data = { .parts = davinci_evm_nandflash_partition, .nr_parts = ARRAY_SIZE(davinci_evm_nandflash_partition), .ecc_mode = NAND_ECC_HW, - .options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_USE_FLASH_BBT, .timing = &davinci_evm_nandflash_timing, }; diff --git a/arch/arm/mach-davinci/board-mityomapl138.c b/arch/arm/mach-davinci/board-mityomapl138.c index c278226..ef7ba49 100644 --- a/arch/arm/mach-davinci/board-mityomapl138.c +++ b/arch/arm/mach-davinci/board-mityomapl138.c @@ -396,7 +396,8 @@ static struct davinci_nand_pdata mityomapl138_nandflash_data = { .parts = mityomapl138_nandflash_partition, .nr_parts = ARRAY_SIZE(mityomapl138_nandflash_partition), .ecc_mode = NAND_ECC_HW, - .options = NAND_USE_FLASH_BBT | NAND_BUSWIDTH_16, + .bbt_options = NAND_USE_FLASH_BBT, + .options = NAND_BUSWIDTH_16, .ecc_bits = 1, /* 4 bit mode is not supported with 16 bit NAND */ }; diff --git a/arch/arm/mach-davinci/board-neuros-osd2.c b/arch/arm/mach-davinci/board-neuros-osd2.c index d60a800..1989768 100644 --- a/arch/arm/mach-davinci/board-neuros-osd2.c +++ b/arch/arm/mach-davinci/board-neuros-osd2.c @@ -87,7 +87,7 @@ static struct davinci_nand_pdata davinci_ntosd2_nandflash_data = { .parts = davinci_ntosd2_nandflash_partition, .nr_parts = ARRAY_SIZE(davinci_ntosd2_nandflash_partition), .ecc_mode = NAND_ECC_HW, - .options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_USE_FLASH_BBT, }; static struct resource davinci_ntosd2_nandflash_resource[] = { diff --git a/arch/arm/mach-davinci/board-tnetv107x-evm.c b/arch/arm/mach-davinci/board-tnetv107x-evm.c index 7828920..046f8e0 100644 --- a/arch/arm/mach-davinci/board-tnetv107x-evm.c +++ b/arch/arm/mach-davinci/board-tnetv107x-evm.c @@ -144,7 +144,7 @@ static struct davinci_nand_pdata nand_config = { .parts = nand_partitions, .nr_parts = ARRAY_SIZE(nand_partitions), .ecc_mode = NAND_ECC_HW, - .options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_USE_FLASH_BBT, .ecc_bits = 1, }; diff --git a/arch/arm/mach-davinci/include/mach/nand.h b/arch/arm/mach-davinci/include/mach/nand.h index 0251510..2c506f9 100644 --- a/arch/arm/mach-davinci/include/mach/nand.h +++ b/arch/arm/mach-davinci/include/mach/nand.h @@ -74,8 +74,10 @@ struct davinci_nand_pdata { /* platform_data */ nand_ecc_modes_t ecc_mode; u8 ecc_bits; - /* e.g. NAND_BUSWIDTH_16 or NAND_USE_FLASH_BBT */ + /* e.g. NAND_BUSWIDTH_16 */ unsigned options; + /* e.g. NAND_USE_FLASH_BBT */ + unsigned bbt_options; /* Main and mirror bbt descriptor overrides */ struct nand_bbt_descr *bbt_td; diff --git a/arch/arm/mach-orion5x/ts78xx-setup.c b/arch/arm/mach-orion5x/ts78xx-setup.c index 6b7b541..e5ca57c 100644 --- a/arch/arm/mach-orion5x/ts78xx-setup.c +++ b/arch/arm/mach-orion5x/ts78xx-setup.c @@ -275,7 +275,7 @@ static struct platform_nand_data ts78xx_ts_nand_data = { .partitions = ts78xx_ts_nand_parts, .nr_partitions = ARRAY_SIZE(ts78xx_ts_nand_parts), .chip_delay = 15, - .options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_USE_FLASH_BBT, }, .ctrl = { /* diff --git a/arch/cris/arch-v32/drivers/mach-a3/nandflash.c b/arch/cris/arch-v32/drivers/mach-a3/nandflash.c index f58f2c1..fdd11c1 100644 --- a/arch/cris/arch-v32/drivers/mach-a3/nandflash.c +++ b/arch/cris/arch-v32/drivers/mach-a3/nandflash.c @@ -163,7 +163,7 @@ struct mtd_info *__init crisv32_nand_flash_probe(void) this->ecc.mode = NAND_ECC_SOFT; /* Enable the following for a flash based bad block table */ - /* this->options = NAND_USE_FLASH_BBT; */ + /* this->bbt_options = NAND_USE_FLASH_BBT; */ /* Scan to find existence of the device */ if (nand_scan(crisv32_mtd, 1)) { diff --git a/arch/cris/arch-v32/drivers/mach-fs/nandflash.c b/arch/cris/arch-v32/drivers/mach-fs/nandflash.c index d5b0cc9..3368177 100644 --- a/arch/cris/arch-v32/drivers/mach-fs/nandflash.c +++ b/arch/cris/arch-v32/drivers/mach-fs/nandflash.c @@ -154,7 +154,7 @@ struct mtd_info *__init crisv32_nand_flash_probe(void) this->ecc.mode = NAND_ECC_SOFT; /* Enable the following for a flash based bad block table */ - /* this->options = NAND_USE_FLASH_BBT; */ + /* this->bbt_options = NAND_USE_FLASH_BBT; */ /* Scan to find existence of the device */ if (nand_scan(crisv32_mtd, 1)) { diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 55da20c..78d5516 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -583,7 +583,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if (on_flash_bbt) { printk(KERN_INFO "atmel_nand: Use On Flash BBT\n"); - nand_chip->options |= NAND_USE_FLASH_BBT; + nand_chip->bbt_options |= NAND_USE_FLASH_BBT; } if (!cpu_has_dma()) diff --git a/drivers/mtd/nand/autcpu12.c b/drivers/mtd/nand/autcpu12.c index eddc9a2..adf934d 100644 --- a/drivers/mtd/nand/autcpu12.c +++ b/drivers/mtd/nand/autcpu12.c @@ -172,9 +172,9 @@ static int __init autcpu12_init(void) /* Enable the following for a flash based bad block table */ /* - this->options = NAND_USE_FLASH_BBT; + this->bbt_options = NAND_USE_FLASH_BBT; */ - this->options = NAND_USE_FLASH_BBT; + this->bbt_options = NAND_USE_FLASH_BBT; /* Scan to find existence of the device */ if (nand_scan(autcpu12_mtd, 1)) { diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c index 8c569e4..974d9bc 100644 --- a/drivers/mtd/nand/bcm_umi_nand.c +++ b/drivers/mtd/nand/bcm_umi_nand.c @@ -474,7 +474,7 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) #if NAND_ECC_BCH if (board_mtd->writesize > 512) { - if (this->options & NAND_USE_FLASH_BBT) + if (this->bbt_options & NAND_USE_FLASH_BBT) largepage_bbt.options = NAND_BBT_SCAN2NDPAGE; this->badblock_pattern = &largepage_bbt; } diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 87ebb4e..7dd7d84 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -686,7 +686,8 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev, cafe->nand.chip_delay = 0; /* Enable the following for a flash based bad block table */ - cafe->nand.options = NAND_USE_FLASH_BBT | NAND_NO_AUTOINCR | NAND_OWN_BUFFERS; + cafe->nand.bbt_options = NAND_USE_FLASH_BBT; + cafe->nand.options = NAND_NO_AUTOINCR | NAND_OWN_BUFFERS; if (skipbbt) { cafe->nand.options |= NAND_SKIP_BBTSCAN; diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c index f59ad1f..05adedd 100644 --- a/drivers/mtd/nand/cs553x_nand.c +++ b/drivers/mtd/nand/cs553x_nand.c @@ -239,7 +239,8 @@ static int __init cs553x_init_one(int cs, int mmio, unsigned long adr) this->ecc.correct = nand_correct_data; /* Enable the following for a flash based bad block table */ - this->options = NAND_USE_FLASH_BBT | NAND_NO_AUTOINCR; + this->bbt_options = NAND_USE_FLASH_BBT; + this->options = NAND_NO_AUTOINCR; /* Scan to find existence of the device */ if (nand_scan(new_mtd, 1)) { diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 1f34951..69f7019 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -581,7 +581,9 @@ static int __init nand_davinci_probe(struct platform_device *pdev) info->chip.chip_delay = 0; info->chip.select_chip = nand_davinci_select_chip; - /* options such as NAND_USE_FLASH_BBT or 16-bit widths */ + /* options such as NAND_USE_FLASH_BBT */ + info->chip.bbt_options = pdata->bbt_options; + /* options such as 16-bit widths */ info->chip.options = pdata->options; info->chip.bbt_td = pdata->bbt_td; info->chip.bbt_md = pdata->bbt_md; diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index d527621..dbb6fba 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -1577,7 +1577,8 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) denali->nand.bbt_md = &bbt_mirror_descr; /* skip the scan for now until we have OOB read and write support */ - denali->nand.options |= NAND_USE_FLASH_BBT | NAND_SKIP_BBTSCAN; + denali->nand.bbt_options |= NAND_USE_FLASH_BBT; + denali->nand.options |= NAND_SKIP_BBTSCAN; denali->nand.ecc.mode = NAND_ECC_HW_SYNDROME; /* Denali Controller only support 15bit and 8bit ECC in MRST, diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index 7837728..f70bc73 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -1652,7 +1652,7 @@ static int __init doc_probe(unsigned long physadr) nand->ecc.mode = NAND_ECC_HW_SYNDROME; nand->ecc.size = 512; nand->ecc.bytes = 6; - nand->options = NAND_USE_FLASH_BBT; + nand->bbt_options = NAND_USE_FLASH_BBT; doc->physadr = physadr; doc->virtadr = virtadr; diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 33d8aad..bff4791 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -791,8 +791,8 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv) chip->bbt_md = &bbt_mirror_descr; /* set up nand options */ - chip->options = NAND_NO_READRDY | NAND_NO_AUTOINCR | - NAND_USE_FLASH_BBT; + chip->options = NAND_NO_READRDY | NAND_NO_AUTOINCR; + chip->bbt_options = NAND_USE_FLASH_BBT; chip->controller = &elbc_fcm_ctrl->controller; chip->priv = priv; diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index eb1fbac..0ac64b5 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -735,7 +735,8 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op) chip->write_buf = mpc5121_nfc_write_buf; chip->verify_buf = mpc5121_nfc_verify_buf; chip->select_chip = mpc5121_nfc_select_chip; - chip->options = NAND_NO_AUTOINCR | NAND_USE_FLASH_BBT; + chip->options = NAND_NO_AUTOINCR; + chip->bbt_options = NAND_USE_FLASH_BBT; chip->ecc.mode = NAND_ECC_SOFT; /* Support external chip-select logic on ADS5121 board */ diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 90df34c..ed68fde3 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -1179,7 +1179,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; /* update flash based bbt */ - this->options |= NAND_USE_FLASH_BBT; + this->bbt_options |= NAND_USE_FLASH_BBT; } init_completion(&host->op_completion); diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 3a9a8fc..d39dffe 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -405,7 +405,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); /* Do we have a flash based bad block table ? */ - if (chip->options & NAND_USE_FLASH_BBT) + if (chip->bbt_options & NAND_USE_FLASH_BBT) ret = nand_update_bbt(mtd, ofs); else { nand_get_device(chip, mtd, FL_WRITING); diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 5df01d8..66f93e2 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -36,9 +36,9 @@ * The table is marked in the OOB area with an ident pattern and a version * number which indicates which of both tables is more up to date. If the NAND * controller needs the complete OOB area for the ECC information then the - * option NAND_USE_FLASH_BBT_NO_OOB should be used: it moves the ident pattern - * and the version byte into the data area and the OOB area will remain - * untouched. + * option NAND_BBT_NO_OOB should be used (along with NAND_USE_FLASH_BBT, of + * course): it moves the ident pattern and the version byte into the data area + * and the OOB area will remain untouched. * * The table uses 2 bits per block * 11b: block is good @@ -1082,16 +1082,16 @@ static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd) pattern_len = bd->len; bits = bd->options & NAND_BBT_NRBITS_MSK; - BUG_ON((this->options & NAND_USE_FLASH_BBT_NO_OOB) && - !(this->options & NAND_USE_FLASH_BBT)); + BUG_ON((this->bbt_options & NAND_BBT_NO_OOB) && + !(this->bbt_options & NAND_USE_FLASH_BBT)); BUG_ON(!bits); if (bd->options & NAND_BBT_VERSION) pattern_len++; if (bd->options & NAND_BBT_NO_OOB) { - BUG_ON(!(this->options & NAND_USE_FLASH_BBT)); - BUG_ON(!(this->options & NAND_USE_FLASH_BBT_NO_OOB)); + BUG_ON(!(this->bbt_options & NAND_USE_FLASH_BBT)); + BUG_ON(!(this->bbt_options & NAND_BBT_NO_OOB)); BUG_ON(bd->offs); if (bd->options & NAND_BBT_VERSION) BUG_ON(bd->veroffs != bd->len); @@ -1357,15 +1357,15 @@ int nand_default_bbt(struct mtd_info *mtd) this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; } - this->options |= NAND_USE_FLASH_BBT; + this->bbt_options |= NAND_USE_FLASH_BBT; return nand_scan_bbt(mtd, &agand_flashbased); } /* Is a flash based bad block table requested ? */ - if (this->options & NAND_USE_FLASH_BBT) { + if (this->bbt_options & NAND_USE_FLASH_BBT) { /* Use the default pattern descriptors */ if (!this->bbt_td) { - if (this->options & NAND_USE_FLASH_BBT_NO_OOB) { + if (this->bbt_options & NAND_BBT_NO_OOB) { this->bbt_td = &bbt_main_no_bbt_descr; this->bbt_md = &bbt_mirror_no_bbt_descr; } else { diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index 357e8c5..1856c42 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -2273,9 +2273,9 @@ static int __init ns_init_module(void) switch (bbt) { case 2: - chip->options |= NAND_USE_FLASH_BBT_NO_OOB; + chip->bbt_options |= NAND_BBT_NO_OOB; case 1: - chip->options |= NAND_USE_FLASH_BBT; + chip->bbt_options |= NAND_USE_FLASH_BBT; case 0: break; default: diff --git a/drivers/mtd/nand/pasemi_nand.c b/drivers/mtd/nand/pasemi_nand.c index b1aa41b..1c17f09 100644 --- a/drivers/mtd/nand/pasemi_nand.c +++ b/drivers/mtd/nand/pasemi_nand.c @@ -155,7 +155,8 @@ static int __devinit pasemi_nand_probe(struct platform_device *ofdev) chip->ecc.mode = NAND_ECC_SOFT; /* Enable the following for a flash based bad block table */ - chip->options = NAND_USE_FLASH_BBT | NAND_NO_AUTOINCR; + chip->options = NAND_NO_AUTOINCR; + chip->bbt_options = NAND_USE_FLASH_BBT; /* Scan to find existence of the device */ if (nand_scan(pasemi_nand_mtd, 1)) { diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c index 633c04b..ccdb16e 100644 --- a/drivers/mtd/nand/plat_nand.c +++ b/drivers/mtd/nand/plat_nand.c @@ -79,6 +79,7 @@ static int __devinit plat_nand_probe(struct platform_device *pdev) data->chip.read_buf = pdata->ctrl.read_buf; data->chip.chip_delay = pdata->chip.chip_delay; data->chip.options |= pdata->chip.options; + data->chip.bbt_options |= pdata->chip.bbt_options; data->chip.ecc.hwctl = pdata->ctrl.hwcontrol; data->chip.ecc.layout = pdata->chip.ecclayout; diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index 4405468..370516c 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -880,8 +880,10 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, /* If you use u-boot BBT creation code, specifying this flag will * let the kernel fish out the BBT from the NAND, and also skip the * full NAND scan that can take 1/2s or so. Little things... */ - if (set->flash_bbt) - chip->options |= NAND_USE_FLASH_BBT | NAND_SKIP_BBTSCAN; + if (set->flash_bbt) { + chip->bbt_options |= NAND_USE_FLASH_BBT; + chip->options |= NAND_SKIP_BBTSCAN; + } } /** diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 08ffa21..7929514 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -100,8 +100,13 @@ struct nand_bbt_descr { #define NAND_BBT_SCANLASTPAGE 0x00008000 /* The nand_bbt_descr was created dynamicaly and must be freed */ #define NAND_BBT_DYNAMICSTRUCT 0x00200000 -/* The bad block table does not OOB for marker */ -#define NAND_BBT_NO_OOB 0x00400000 +/* + * Use a flash based bad block table. By default, OOB identifier is saved in + * OOB area. This option is passed to the default bad block table function. + */ +#define NAND_USE_FLASH_BBT 0x00040000 +/* Do not store flash based bad block table in OOB area; store it in-band */ +#define NAND_BBT_NO_OOB 0x00080000 /* The maximum number of blocks to scan for a bbt */ #define NAND_BBT_SCAN_MAXBLOCKS 4 diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 42f70e2..8a086d2 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -219,11 +219,6 @@ typedef enum { #define NAND_CHIPOPTIONS_MSK (0x0000ffff & ~NAND_NO_AUTOINCR) /* Non chip related options */ -/* - * Use a flash based bad block table. OOB identifier is saved in OOB area. - * This option is passed to the default bad block table function. - */ -#define NAND_USE_FLASH_BBT 0x00010000 /* This option skips the bbt scan during initialization. */ #define NAND_SKIP_BBTSCAN 0x00020000 /* @@ -233,11 +228,6 @@ typedef enum { #define NAND_OWN_BUFFERS 0x00040000 /* Chip may not exist, so silence any errors in scan */ #define NAND_SCAN_SILENT_NODEV 0x00080000 -/* - * If passed additionally to NAND_USE_FLASH_BBT then BBT code will not touch - * the OOB area. - */ -#define NAND_USE_FLASH_BBT_NO_OOB 0x00800000 /* Create an empty BBT with no vendor information if the BBT is available */ #define NAND_CREATE_EMPTY_BBT 0x01000000 @@ -615,6 +605,7 @@ extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len, * @partitions: mtd partition list * @chip_delay: R/B delay value in us * @options: Option flags, e.g. 16bit buswidth + * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH * @ecclayout: ecc layout info structure * @part_probe_types: NULL-terminated array of probe types * @set_parts: platform specific function to set partitions @@ -628,6 +619,7 @@ struct platform_nand_chip { struct nand_ecclayout *ecclayout; int chip_delay; unsigned int options; + unsigned int bbt_options; const char **part_probe_types; void (*set_parts)(uint64_t size, struct platform_nand_chip *chip); void *priv; -- cgit v0.10.2 From bb9ebd4e714385a2592a482845865ef2d58b2868 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:23 -0700 Subject: mtd: nand: rename NAND_USE_FLASH_BBT Recall the recently added prefix requirements: * "NAND_" for flags in nand.h, used in nand_chip.options * "NAND_BBT_" for flags in bbm.h, used in nand_chip.bbt_options or in nand_bbt_descr.options Thus, I am changing NAND_USE_FLASH_BBT to NAND_BBT_USE_FLASH. Again, this flag is found in bbm.h and so should NOT be used in the "nand_chip.options" field. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl index 05cc83e..8c07540 100644 --- a/Documentation/DocBook/mtdnand.tmpl +++ b/Documentation/DocBook/mtdnand.tmpl @@ -572,7 +572,7 @@ static void board_select_chip (struct mtd_info *mtd, int chip) The simplest way to activate the FLASH based bad block table support - is to set the option NAND_USE_FLASH_BBT in the bbt_option field of + is to set the option NAND_BBT_USE_FLASH in the bbt_option field of the nand chip structure before calling nand_scan(). For AG-AND chips is this done by default. This activates the default FLASH based bad block table functionality diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index a790c1b..0b36fd5 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -377,7 +377,7 @@ static struct davinci_nand_pdata da830_evm_nand_pdata = { .nr_parts = ARRAY_SIZE(da830_evm_nand_partitions), .ecc_mode = NAND_ECC_HW, .ecc_bits = 4, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, .bbt_td = &da830_evm_nand_bbt_main_descr, .bbt_md = &da830_evm_nand_bbt_mirror_descr, .timing = &da830_evm_nandflash_timing, diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c index de27111..8193d34 100644 --- a/arch/arm/mach-davinci/board-da850-evm.c +++ b/arch/arm/mach-davinci/board-da850-evm.c @@ -225,7 +225,7 @@ static struct davinci_nand_pdata da850_evm_nandflash_data = { .nr_parts = ARRAY_SIZE(da850_evm_nandflash_partition), .ecc_mode = NAND_ECC_HW, .ecc_bits = 4, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, .timing = &da850_evm_nandflash_timing, }; diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c index fd2de2c..fe61779 100644 --- a/arch/arm/mach-davinci/board-dm355-evm.c +++ b/arch/arm/mach-davinci/board-dm355-evm.c @@ -77,7 +77,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), .ecc_mode = NAND_ECC_HW, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, .ecc_bits = 4, }; diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c index cfbd897..249c355 100644 --- a/arch/arm/mach-davinci/board-dm355-leopard.c +++ b/arch/arm/mach-davinci/board-dm355-leopard.c @@ -74,7 +74,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), .ecc_mode = NAND_ECC_HW_SYNDROME, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, }; static struct resource davinci_nand_resources[] = { diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c index e66116d..e555267 100644 --- a/arch/arm/mach-davinci/board-dm365-evm.c +++ b/arch/arm/mach-davinci/board-dm365-evm.c @@ -139,7 +139,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), .ecc_mode = NAND_ECC_HW, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, .ecc_bits = 4, }; diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c index dde2049..8fd30526 100644 --- a/arch/arm/mach-davinci/board-dm644x-evm.c +++ b/arch/arm/mach-davinci/board-dm644x-evm.c @@ -150,7 +150,7 @@ static struct davinci_nand_pdata davinci_evm_nandflash_data = { .parts = davinci_evm_nandflash_partition, .nr_parts = ARRAY_SIZE(davinci_evm_nandflash_partition), .ecc_mode = NAND_ECC_HW, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, .timing = &davinci_evm_nandflash_timing, }; diff --git a/arch/arm/mach-davinci/board-mityomapl138.c b/arch/arm/mach-davinci/board-mityomapl138.c index ef7ba49..dffab31 100644 --- a/arch/arm/mach-davinci/board-mityomapl138.c +++ b/arch/arm/mach-davinci/board-mityomapl138.c @@ -396,7 +396,7 @@ static struct davinci_nand_pdata mityomapl138_nandflash_data = { .parts = mityomapl138_nandflash_partition, .nr_parts = ARRAY_SIZE(mityomapl138_nandflash_partition), .ecc_mode = NAND_ECC_HW, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, .options = NAND_BUSWIDTH_16, .ecc_bits = 1, /* 4 bit mode is not supported with 16 bit NAND */ }; diff --git a/arch/arm/mach-davinci/board-neuros-osd2.c b/arch/arm/mach-davinci/board-neuros-osd2.c index 1989768..70dcf9f 100644 --- a/arch/arm/mach-davinci/board-neuros-osd2.c +++ b/arch/arm/mach-davinci/board-neuros-osd2.c @@ -87,7 +87,7 @@ static struct davinci_nand_pdata davinci_ntosd2_nandflash_data = { .parts = davinci_ntosd2_nandflash_partition, .nr_parts = ARRAY_SIZE(davinci_ntosd2_nandflash_partition), .ecc_mode = NAND_ECC_HW, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, }; static struct resource davinci_ntosd2_nandflash_resource[] = { diff --git a/arch/arm/mach-davinci/board-tnetv107x-evm.c b/arch/arm/mach-davinci/board-tnetv107x-evm.c index 046f8e0..75383df 100644 --- a/arch/arm/mach-davinci/board-tnetv107x-evm.c +++ b/arch/arm/mach-davinci/board-tnetv107x-evm.c @@ -144,7 +144,7 @@ static struct davinci_nand_pdata nand_config = { .parts = nand_partitions, .nr_parts = ARRAY_SIZE(nand_partitions), .ecc_mode = NAND_ECC_HW, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, .ecc_bits = 1, }; diff --git a/arch/arm/mach-davinci/include/mach/nand.h b/arch/arm/mach-davinci/include/mach/nand.h index 2c506f9..1cf555a 100644 --- a/arch/arm/mach-davinci/include/mach/nand.h +++ b/arch/arm/mach-davinci/include/mach/nand.h @@ -76,7 +76,7 @@ struct davinci_nand_pdata { /* platform_data */ /* e.g. NAND_BUSWIDTH_16 */ unsigned options; - /* e.g. NAND_USE_FLASH_BBT */ + /* e.g. NAND_BBT_USE_FLASH */ unsigned bbt_options; /* Main and mirror bbt descriptor overrides */ diff --git a/arch/arm/mach-orion5x/ts78xx-setup.c b/arch/arm/mach-orion5x/ts78xx-setup.c index e5ca57c..8ae5301 100644 --- a/arch/arm/mach-orion5x/ts78xx-setup.c +++ b/arch/arm/mach-orion5x/ts78xx-setup.c @@ -275,7 +275,7 @@ static struct platform_nand_data ts78xx_ts_nand_data = { .partitions = ts78xx_ts_nand_parts, .nr_partitions = ARRAY_SIZE(ts78xx_ts_nand_parts), .chip_delay = 15, - .bbt_options = NAND_USE_FLASH_BBT, + .bbt_options = NAND_BBT_USE_FLASH, }, .ctrl = { /* diff --git a/arch/cris/arch-v32/drivers/mach-a3/nandflash.c b/arch/cris/arch-v32/drivers/mach-a3/nandflash.c index fdd11c1..7fb5212 100644 --- a/arch/cris/arch-v32/drivers/mach-a3/nandflash.c +++ b/arch/cris/arch-v32/drivers/mach-a3/nandflash.c @@ -163,7 +163,7 @@ struct mtd_info *__init crisv32_nand_flash_probe(void) this->ecc.mode = NAND_ECC_SOFT; /* Enable the following for a flash based bad block table */ - /* this->bbt_options = NAND_USE_FLASH_BBT; */ + /* this->bbt_options = NAND_BBT_USE_FLASH; */ /* Scan to find existence of the device */ if (nand_scan(crisv32_mtd, 1)) { diff --git a/arch/cris/arch-v32/drivers/mach-fs/nandflash.c b/arch/cris/arch-v32/drivers/mach-fs/nandflash.c index 3368177..e032384 100644 --- a/arch/cris/arch-v32/drivers/mach-fs/nandflash.c +++ b/arch/cris/arch-v32/drivers/mach-fs/nandflash.c @@ -154,7 +154,7 @@ struct mtd_info *__init crisv32_nand_flash_probe(void) this->ecc.mode = NAND_ECC_SOFT; /* Enable the following for a flash based bad block table */ - /* this->bbt_options = NAND_USE_FLASH_BBT; */ + /* this->bbt_options = NAND_BBT_USE_FLASH; */ /* Scan to find existence of the device */ if (nand_scan(crisv32_mtd, 1)) { diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 78d5516..79a7ef2 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -583,7 +583,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if (on_flash_bbt) { printk(KERN_INFO "atmel_nand: Use On Flash BBT\n"); - nand_chip->bbt_options |= NAND_USE_FLASH_BBT; + nand_chip->bbt_options |= NAND_BBT_USE_FLASH; } if (!cpu_has_dma()) diff --git a/drivers/mtd/nand/autcpu12.c b/drivers/mtd/nand/autcpu12.c index adf934d..2e42ec2 100644 --- a/drivers/mtd/nand/autcpu12.c +++ b/drivers/mtd/nand/autcpu12.c @@ -172,9 +172,9 @@ static int __init autcpu12_init(void) /* Enable the following for a flash based bad block table */ /* - this->bbt_options = NAND_USE_FLASH_BBT; + this->bbt_options = NAND_BBT_USE_FLASH; */ - this->bbt_options = NAND_USE_FLASH_BBT; + this->bbt_options = NAND_BBT_USE_FLASH; /* Scan to find existence of the device */ if (nand_scan(autcpu12_mtd, 1)) { diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c index 974d9bc..e3ffc4c 100644 --- a/drivers/mtd/nand/bcm_umi_nand.c +++ b/drivers/mtd/nand/bcm_umi_nand.c @@ -474,7 +474,7 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) #if NAND_ECC_BCH if (board_mtd->writesize > 512) { - if (this->bbt_options & NAND_USE_FLASH_BBT) + if (this->bbt_options & NAND_BBT_USE_FLASH) largepage_bbt.options = NAND_BBT_SCAN2NDPAGE; this->badblock_pattern = &largepage_bbt; } diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 7dd7d84..d0eed49 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -686,7 +686,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev, cafe->nand.chip_delay = 0; /* Enable the following for a flash based bad block table */ - cafe->nand.bbt_options = NAND_USE_FLASH_BBT; + cafe->nand.bbt_options = NAND_BBT_USE_FLASH; cafe->nand.options = NAND_NO_AUTOINCR | NAND_OWN_BUFFERS; if (skipbbt) { diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c index 05adedd..b354961 100644 --- a/drivers/mtd/nand/cs553x_nand.c +++ b/drivers/mtd/nand/cs553x_nand.c @@ -239,7 +239,7 @@ static int __init cs553x_init_one(int cs, int mmio, unsigned long adr) this->ecc.correct = nand_correct_data; /* Enable the following for a flash based bad block table */ - this->bbt_options = NAND_USE_FLASH_BBT; + this->bbt_options = NAND_BBT_USE_FLASH; this->options = NAND_NO_AUTOINCR; /* Scan to find existence of the device */ diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 69f7019..a4c82b4 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -581,7 +581,7 @@ static int __init nand_davinci_probe(struct platform_device *pdev) info->chip.chip_delay = 0; info->chip.select_chip = nand_davinci_select_chip; - /* options such as NAND_USE_FLASH_BBT */ + /* options such as NAND_BBT_USE_FLASH */ info->chip.bbt_options = pdata->bbt_options; /* options such as 16-bit widths */ info->chip.options = pdata->options; diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index dbb6fba..ee30145 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -1577,7 +1577,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) denali->nand.bbt_md = &bbt_mirror_descr; /* skip the scan for now until we have OOB read and write support */ - denali->nand.bbt_options |= NAND_USE_FLASH_BBT; + denali->nand.bbt_options |= NAND_BBT_USE_FLASH; denali->nand.options |= NAND_SKIP_BBTSCAN; denali->nand.ecc.mode = NAND_ECC_HW_SYNDROME; diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index f70bc73..b657d7f 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -1652,7 +1652,7 @@ static int __init doc_probe(unsigned long physadr) nand->ecc.mode = NAND_ECC_HW_SYNDROME; nand->ecc.size = 512; nand->ecc.bytes = 6; - nand->bbt_options = NAND_USE_FLASH_BBT; + nand->bbt_options = NAND_BBT_USE_FLASH; doc->physadr = physadr; doc->virtadr = virtadr; diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index bff4791..d4ea5fe 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -792,7 +792,7 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv) /* set up nand options */ chip->options = NAND_NO_READRDY | NAND_NO_AUTOINCR; - chip->bbt_options = NAND_USE_FLASH_BBT; + chip->bbt_options = NAND_BBT_USE_FLASH; chip->controller = &elbc_fcm_ctrl->controller; chip->priv = priv; diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index 0ac64b5..2f2c35a 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -736,7 +736,7 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op) chip->verify_buf = mpc5121_nfc_verify_buf; chip->select_chip = mpc5121_nfc_select_chip; chip->options = NAND_NO_AUTOINCR; - chip->bbt_options = NAND_USE_FLASH_BBT; + chip->bbt_options = NAND_BBT_USE_FLASH; chip->ecc.mode = NAND_ECC_SOFT; /* Support external chip-select logic on ADS5121 board */ diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index ed68fde3..ca42c8f 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -1179,7 +1179,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; /* update flash based bbt */ - this->bbt_options |= NAND_USE_FLASH_BBT; + this->bbt_options |= NAND_BBT_USE_FLASH; } init_completion(&host->op_completion); diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index d39dffe..422e787 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -405,7 +405,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); /* Do we have a flash based bad block table ? */ - if (chip->bbt_options & NAND_USE_FLASH_BBT) + if (chip->bbt_options & NAND_BBT_USE_FLASH) ret = nand_update_bbt(mtd, ofs); else { nand_get_device(chip, mtd, FL_WRITING); diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 66f93e2..dfea9fd 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -14,7 +14,7 @@ * * When nand_scan_bbt is called, then it tries to find the bad block table * depending on the options in the BBT descriptor(s). If no flash based BBT - * (NAND_USE_FLASH_BBT) is specified then the device is scanned for factory + * (NAND_BBT_USE_FLASH) is specified then the device is scanned for factory * marked good / bad blocks. This information is used to create a memory BBT. * Once a new bad block is discovered then the "factory" information is updated * on the device. @@ -36,7 +36,7 @@ * The table is marked in the OOB area with an ident pattern and a version * number which indicates which of both tables is more up to date. If the NAND * controller needs the complete OOB area for the ECC information then the - * option NAND_BBT_NO_OOB should be used (along with NAND_USE_FLASH_BBT, of + * option NAND_BBT_NO_OOB should be used (along with NAND_BBT_USE_FLASH, of * course): it moves the ident pattern and the version byte into the data area * and the OOB area will remain untouched. * @@ -1083,14 +1083,14 @@ static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd) bits = bd->options & NAND_BBT_NRBITS_MSK; BUG_ON((this->bbt_options & NAND_BBT_NO_OOB) && - !(this->bbt_options & NAND_USE_FLASH_BBT)); + !(this->bbt_options & NAND_BBT_USE_FLASH)); BUG_ON(!bits); if (bd->options & NAND_BBT_VERSION) pattern_len++; if (bd->options & NAND_BBT_NO_OOB) { - BUG_ON(!(this->bbt_options & NAND_USE_FLASH_BBT)); + BUG_ON(!(this->bbt_options & NAND_BBT_USE_FLASH)); BUG_ON(!(this->bbt_options & NAND_BBT_NO_OOB)); BUG_ON(bd->offs); if (bd->options & NAND_BBT_VERSION) @@ -1357,12 +1357,12 @@ int nand_default_bbt(struct mtd_info *mtd) this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; } - this->bbt_options |= NAND_USE_FLASH_BBT; + this->bbt_options |= NAND_BBT_USE_FLASH; return nand_scan_bbt(mtd, &agand_flashbased); } /* Is a flash based bad block table requested ? */ - if (this->bbt_options & NAND_USE_FLASH_BBT) { + if (this->bbt_options & NAND_BBT_USE_FLASH) { /* Use the default pattern descriptors */ if (!this->bbt_td) { if (this->bbt_options & NAND_BBT_NO_OOB) { diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index 1856c42..34c03be 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -2275,7 +2275,7 @@ static int __init ns_init_module(void) case 2: chip->bbt_options |= NAND_BBT_NO_OOB; case 1: - chip->bbt_options |= NAND_USE_FLASH_BBT; + chip->bbt_options |= NAND_BBT_USE_FLASH; case 0: break; default: diff --git a/drivers/mtd/nand/pasemi_nand.c b/drivers/mtd/nand/pasemi_nand.c index 1c17f09..a97264e 100644 --- a/drivers/mtd/nand/pasemi_nand.c +++ b/drivers/mtd/nand/pasemi_nand.c @@ -156,7 +156,7 @@ static int __devinit pasemi_nand_probe(struct platform_device *ofdev) /* Enable the following for a flash based bad block table */ chip->options = NAND_NO_AUTOINCR; - chip->bbt_options = NAND_USE_FLASH_BBT; + chip->bbt_options = NAND_BBT_USE_FLASH; /* Scan to find existence of the device */ if (nand_scan(pasemi_nand_mtd, 1)) { diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index 370516c..ec28079 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -881,7 +881,7 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, * let the kernel fish out the BBT from the NAND, and also skip the * full NAND scan that can take 1/2s or so. Little things... */ if (set->flash_bbt) { - chip->bbt_options |= NAND_USE_FLASH_BBT; + chip->bbt_options |= NAND_BBT_USE_FLASH; chip->options |= NAND_SKIP_BBTSCAN; } } diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 7929514..ff18c08 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -104,7 +104,7 @@ struct nand_bbt_descr { * Use a flash based bad block table. By default, OOB identifier is saved in * OOB area. This option is passed to the default bad block table function. */ -#define NAND_USE_FLASH_BBT 0x00040000 +#define NAND_BBT_USE_FLASH 0x00040000 /* Do not store flash based bad block table in OOB area; store it in-band */ #define NAND_BBT_NO_OOB 0x00080000 -- cgit v0.10.2 From b8f80684054ec8a3bcdf35dc9c76ddf629a36482 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:24 -0700 Subject: mtd: nand: move NAND_CREATE_EMPTY_BBT flag The NAND_CREATE_EMPTY_BBT flag was added by commit: 453281a973c10bce941b240d1c654d536623b16b mtd: nand: introduce NAND_CREATE_EMPTY_BBT This flag is not used within the kernel and not explained well, so I took the liberty to edit its comments. Also, this is a BBT-related flag (and closely tied with NAND_BBT_CREATE) so I'm moving it to bbm.h next to NAND_BBT_CREATE, thus requiring that we use the flag in nand_chip.bbt_options, *not* in nand_chip.options. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index dfea9fd..2e4e259 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -970,7 +970,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc continue; /* Create the table in memory by scanning the chip(s) */ - if (!(this->options & NAND_CREATE_EMPTY_BBT)) + if (!(this->bbt_options & NAND_CREATE_EMPTY_BBT)) create_bbt(mtd, buf, bd, chipsel); td->version[i] = 1; diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index ff18c08..3cf4a8a 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -86,6 +86,13 @@ struct nand_bbt_descr { #define NAND_BBT_VERSION 0x00000100 /* Create a bbt if none exists */ #define NAND_BBT_CREATE 0x00000200 +/* + * Create an empty BBT with no vendor information. Vendor's information may be + * unavailable, for example, if the NAND controller has a different data and OOB + * layout or if this information is already purged. Must be used in conjunction + * with NAND_BBT_CREATE. + */ +#define NAND_CREATE_EMPTY_BBT 0x01000000 /* Search good / bad pattern through all pages of a block */ #define NAND_BBT_SCANALLPAGES 0x00000400 /* Scan block empty during good / bad block scan */ diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 8a086d2..c1fca4f 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -228,8 +228,6 @@ typedef enum { #define NAND_OWN_BUFFERS 0x00040000 /* Chip may not exist, so silence any errors in scan */ #define NAND_SCAN_SILENT_NODEV 0x00080000 -/* Create an empty BBT with no vendor information if the BBT is available */ -#define NAND_CREATE_EMPTY_BBT 0x01000000 /* Options set by nand scan */ /* Nand scan has allocated controller struct */ -- cgit v0.10.2 From 53d5d8885089b8abeb487392311ed18f897deb93 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:25 -0700 Subject: mtd: nand: rename CREATE_EMPTY bbt flag with proper prefix According to our new prefix rules, we should rename NAND_CREATE_EMPTY_BBT with a NAND_BBT prefix, i.e., NAND_BBT_CREATE_EMPTY. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 2e4e259..9af703d 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -970,7 +970,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc continue; /* Create the table in memory by scanning the chip(s) */ - if (!(this->bbt_options & NAND_CREATE_EMPTY_BBT)) + if (!(this->bbt_options & NAND_BBT_CREATE_EMPTY)) create_bbt(mtd, buf, bd, chipsel); td->version[i] = 1; diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 3cf4a8a..0fa030a 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -92,7 +92,7 @@ struct nand_bbt_descr { * layout or if this information is already purged. Must be used in conjunction * with NAND_BBT_CREATE. */ -#define NAND_CREATE_EMPTY_BBT 0x01000000 +#define NAND_BBT_CREATE_EMPTY 0x01000000 /* Search good / bad pattern through all pages of a block */ #define NAND_BBT_SCANALLPAGES 0x00000400 /* Scan block empty during good / bad block scan */ -- cgit v0.10.2 From b4dc53e16ff00c0edba3d3219e216475e68951b3 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:26 -0700 Subject: mtd: nand: renumber the reorganized flags in nand.h / bbm.h After several steps of rearrangement and consolidation, it is probably worth re-sequencing the numbers on some of our affected flags in nand.h and bbm.h. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 0fa030a..57d6a8d 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -92,28 +92,29 @@ struct nand_bbt_descr { * layout or if this information is already purged. Must be used in conjunction * with NAND_BBT_CREATE. */ -#define NAND_BBT_CREATE_EMPTY 0x01000000 +#define NAND_BBT_CREATE_EMPTY 0x00000400 /* Search good / bad pattern through all pages of a block */ -#define NAND_BBT_SCANALLPAGES 0x00000400 +#define NAND_BBT_SCANALLPAGES 0x00000800 /* Scan block empty during good / bad block scan */ -#define NAND_BBT_SCANEMPTY 0x00000800 +#define NAND_BBT_SCANEMPTY 0x00001000 /* Write bbt if neccecary */ -#define NAND_BBT_WRITE 0x00001000 +#define NAND_BBT_WRITE 0x00002000 /* Read and write back block contents when writing bbt */ -#define NAND_BBT_SAVECONTENT 0x00002000 +#define NAND_BBT_SAVECONTENT 0x00004000 /* Search good / bad pattern on the first and the second page */ -#define NAND_BBT_SCAN2NDPAGE 0x00004000 +#define NAND_BBT_SCAN2NDPAGE 0x00008000 /* Search good / bad pattern on the last page of the eraseblock */ -#define NAND_BBT_SCANLASTPAGE 0x00008000 -/* The nand_bbt_descr was created dynamicaly and must be freed */ -#define NAND_BBT_DYNAMICSTRUCT 0x00200000 +#define NAND_BBT_SCANLASTPAGE 0x00010000 /* * Use a flash based bad block table. By default, OOB identifier is saved in * OOB area. This option is passed to the default bad block table function. */ -#define NAND_BBT_USE_FLASH 0x00040000 +#define NAND_BBT_USE_FLASH 0x00020000 /* Do not store flash based bad block table in OOB area; store it in-band */ -#define NAND_BBT_NO_OOB 0x00080000 +#define NAND_BBT_NO_OOB 0x00040000 + +/* The nand_bbt_descr was created dynamicaly and must be freed */ +#define NAND_BBT_DYNAMICSTRUCT 0x80000000 /* The maximum number of blocks to scan for a bbt */ #define NAND_BBT_SCAN_MAXBLOCKS 4 diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index c1fca4f..4a43ffc 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -220,14 +220,14 @@ typedef enum { /* Non chip related options */ /* This option skips the bbt scan during initialization. */ -#define NAND_SKIP_BBTSCAN 0x00020000 +#define NAND_SKIP_BBTSCAN 0x00010000 /* * This option is defined if the board driver allocates its own buffers * (e.g. because it needs them DMA-coherent). */ -#define NAND_OWN_BUFFERS 0x00040000 +#define NAND_OWN_BUFFERS 0x00020000 /* Chip may not exist, so silence any errors in scan */ -#define NAND_SCAN_SILENT_NODEV 0x00080000 +#define NAND_SCAN_SILENT_NODEV 0x00040000 /* Options set by nand scan */ /* Nand scan has allocated controller struct */ -- cgit v0.10.2 From 9eeff8243677b8bbfc17e8e606e965bb591a759d Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 31 May 2011 16:31:27 -0700 Subject: mtd: nand: improve comment on NAND_BBT_DYNAMIC_STRUCT In an attempt to improve the documentation of the BBT code, I am expanding the comments I left in commit: 58373ff0afff4cc8ac40608872995f4d87eb72ec mtd: nand: more BB Detection refactoring and dynamic scan options Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 57d6a8d..c4eec22 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -113,7 +113,11 @@ struct nand_bbt_descr { /* Do not store flash based bad block table in OOB area; store it in-band */ #define NAND_BBT_NO_OOB 0x00040000 -/* The nand_bbt_descr was created dynamicaly and must be freed */ +/* + * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr + * was allocated dynamicaly and must be freed in nand_release(). Has no meaning + * in nand_chip.bbt_options. + */ #define NAND_BBT_DYNAMICSTRUCT 0x80000000 /* The maximum number of blocks to scan for a bbt */ -- cgit v0.10.2 From 1754aab9bb869c173aa03b57587256827250e488 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 17:49:22 +0400 Subject: mtd: ATMEL, AVR32: inline nand partition table access Currently atmel_nand driver used by AT91 and AVR32 calls a special callback which return nand partition table and number of partitions. However in all boards this callback returns just static data. So drop this callback and make atmel_nand use partition table provided statically via platform_data. Nicolas Ferre: I am in favor for a mainline inclusion through linux-mtd tree. Hans-Christian Egtvedt: I'm fine by sending the changes for AVR32 through linux-mtd Signed-off-by: Dmitry Eremin-Solenikov Acked-by: Hans-Christian Egtvedt Acked-by: Nicolas Ferre Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Artem Bityutskiy diff --git a/arch/arm/mach-at91/board-afeb-9260v1.c b/arch/arm/mach-at91/board-afeb-9260v1.c index b0c796d..a053e91 100644 --- a/arch/arm/mach-at91/board-afeb-9260v1.c +++ b/arch/arm/mach-at91/board-afeb-9260v1.c @@ -130,19 +130,14 @@ static struct mtd_partition __initdata afeb9260_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(afeb9260_nand_partition); - return afeb9260_nand_partition; -} - static struct atmel_nand_data __initdata afeb9260_nand_data = { .ale = 21, .cle = 22, .rdy_pin = AT91_PIN_PC13, .enable_pin = AT91_PIN_PC14, - .partition_info = nand_partitions, .bus_width_16 = 0, + .parts = afeb9260_nand_partition, + .num_parts = ARRAY_SIZE(afeb9260_nand_partition), }; diff --git a/arch/arm/mach-at91/board-cam60.c b/arch/arm/mach-at91/board-cam60.c index d1abd58..46f8bab 100644 --- a/arch/arm/mach-at91/board-cam60.c +++ b/arch/arm/mach-at91/board-cam60.c @@ -132,19 +132,14 @@ static struct mtd_partition __initdata cam60_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(cam60_nand_partition); - return cam60_nand_partition; -} - static struct atmel_nand_data __initdata cam60_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not there .rdy_pin = AT91_PIN_PA9, .enable_pin = AT91_PIN_PA7, - .partition_info = nand_partitions, + .parts = cam60_nand_partition, + .num_parts = ARRAY_SIZE(cam60_nand_partition), }; static struct sam9_smc_config __initdata cam60_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-cap9adk.c b/arch/arm/mach-at91/board-cap9adk.c index 679b0b7..858927e 100644 --- a/arch/arm/mach-at91/board-cap9adk.c +++ b/arch/arm/mach-at91/board-cap9adk.c @@ -169,19 +169,14 @@ static struct mtd_partition __initdata cap9adk_nand_partitions[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(cap9adk_nand_partitions); - return cap9adk_nand_partitions; -} - static struct atmel_nand_data __initdata cap9adk_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected // .rdy_pin = ... not connected .enable_pin = AT91_PIN_PD15, - .partition_info = nand_partitions, + .parts = cap9adk_nand_partitions, + .num_parts = ARRAY_SIZE(cap9adk_nand_partitions), }; static struct sam9_smc_config __initdata cap9adk_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-kb9202.c b/arch/arm/mach-at91/board-kb9202.c index 9dc8d49..9437244 100644 --- a/arch/arm/mach-at91/board-kb9202.c +++ b/arch/arm/mach-at91/board-kb9202.c @@ -97,19 +97,14 @@ static struct mtd_partition __initdata kb9202_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(kb9202_nand_partition); - return kb9202_nand_partition; -} - static struct atmel_nand_data __initdata kb9202_nand_data = { .ale = 22, .cle = 21, // .det_pin = ... not there .rdy_pin = AT91_PIN_PC29, .enable_pin = AT91_PIN_PC28, - .partition_info = nand_partitions, + .parts = kb9202_nand_partition, + .num_parts = ARRAY_SIZE(kb9202_nand_partition), }; static void __init kb9202_board_init(void) diff --git a/arch/arm/mach-at91/board-neocore926.c b/arch/arm/mach-at91/board-neocore926.c index 9bc6ab3..60f0cee 100644 --- a/arch/arm/mach-at91/board-neocore926.c +++ b/arch/arm/mach-at91/board-neocore926.c @@ -182,19 +182,14 @@ static struct mtd_partition __initdata neocore926_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(neocore926_nand_partition); - return neocore926_nand_partition; -} - static struct atmel_nand_data __initdata neocore926_nand_data = { .ale = 21, .cle = 22, .rdy_pin = AT91_PIN_PB19, .rdy_pin_active_low = 1, .enable_pin = AT91_PIN_PD15, - .partition_info = nand_partitions, + .parts = neocore926_nand_partition, + .num_parts = ARRAY_SIZE(neocore926_nand_partition), }; static struct sam9_smc_config __initdata neocore926_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-qil-a9260.c b/arch/arm/mach-at91/board-qil-a9260.c index 81f9110..78d71e4 100644 --- a/arch/arm/mach-at91/board-qil-a9260.c +++ b/arch/arm/mach-at91/board-qil-a9260.c @@ -130,19 +130,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected .rdy_pin = AT91_PIN_PC13, .enable_pin = AT91_PIN_PC14, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-rm9200dk.c b/arch/arm/mach-at91/board-rm9200dk.c index 6f08faa..b5f2faf 100644 --- a/arch/arm/mach-at91/board-rm9200dk.c +++ b/arch/arm/mach-at91/board-rm9200dk.c @@ -138,19 +138,14 @@ static struct mtd_partition __initdata dk_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(dk_nand_partition); - return dk_nand_partition; -} - static struct atmel_nand_data __initdata dk_nand_data = { .ale = 22, .cle = 21, .det_pin = AT91_PIN_PB1, .rdy_pin = AT91_PIN_PC2, // .enable_pin = ... not there - .partition_info = nand_partitions, + .parts = dk_nand_partition, + .num_parts = ARRAY_SIZE(dk_nand_partition), }; #define DK_FLASH_BASE AT91_CHIPSELECT_0 diff --git a/arch/arm/mach-at91/board-sam9-l9260.c b/arch/arm/mach-at91/board-sam9-l9260.c index 4d3a02f..4128f6d 100644 --- a/arch/arm/mach-at91/board-sam9-l9260.c +++ b/arch/arm/mach-at91/board-sam9-l9260.c @@ -131,19 +131,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected .rdy_pin = AT91_PIN_PC13, .enable_pin = AT91_PIN_PC14, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-sam9260ek.c b/arch/arm/mach-at91/board-sam9260ek.c index 8a50c3e..2cf7ce2 100644 --- a/arch/arm/mach-at91/board-sam9260ek.c +++ b/arch/arm/mach-at91/board-sam9260ek.c @@ -173,19 +173,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected .rdy_pin = AT91_PIN_PC13, .enable_pin = AT91_PIN_PC14, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c index 5096a0e..b7f35d0 100644 --- a/arch/arm/mach-at91/board-sam9261ek.c +++ b/arch/arm/mach-at91/board-sam9261ek.c @@ -179,19 +179,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - static struct atmel_nand_data __initdata ek_nand_data = { .ale = 22, .cle = 21, // .det_pin = ... not connected .rdy_pin = AT91_PIN_PC15, .enable_pin = AT91_PIN_PC14, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-sam9263ek.c b/arch/arm/mach-at91/board-sam9263ek.c index ea8f185..5d2bd12 100644 --- a/arch/arm/mach-at91/board-sam9263ek.c +++ b/arch/arm/mach-at91/board-sam9263ek.c @@ -180,19 +180,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected .rdy_pin = AT91_PIN_PA22, .enable_pin = AT91_PIN_PD15, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c index 817f59d..0031227 100644 --- a/arch/arm/mach-at91/board-sam9g20ek.c +++ b/arch/arm/mach-at91/board-sam9g20ek.c @@ -157,19 +157,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - /* det_pin is not connected */ static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, .rdy_pin = AT91_PIN_PC13, .enable_pin = AT91_PIN_PC14, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c index ad234cc..00d041c 100644 --- a/arch/arm/mach-at91/board-sam9m10g45ek.c +++ b/arch/arm/mach-at91/board-sam9m10g45ek.c @@ -137,19 +137,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - /* det_pin is not connected */ static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, .rdy_pin = AT91_PIN_PC8, .enable_pin = AT91_PIN_PC14, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c index 4f14b54..6178b4e 100644 --- a/arch/arm/mach-at91/board-sam9rlek.c +++ b/arch/arm/mach-at91/board-sam9rlek.c @@ -88,19 +88,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { }, }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected .rdy_pin = AT91_PIN_PD17, .enable_pin = AT91_PIN_PB6, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-snapper9260.c b/arch/arm/mach-at91/board-snapper9260.c index c73d25e..0df01c6 100644 --- a/arch/arm/mach-at91/board-snapper9260.c +++ b/arch/arm/mach-at91/board-snapper9260.c @@ -97,18 +97,12 @@ static struct mtd_partition __initdata snapper9260_nand_partitions[] = { }, }; -static struct mtd_partition * __init -snapper9260_nand_partition_info(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(snapper9260_nand_partitions); - return snapper9260_nand_partitions; -} - static struct atmel_nand_data __initdata snapper9260_nand_data = { .ale = 21, .cle = 22, .rdy_pin = AT91_PIN_PC13, - .partition_info = snapper9260_nand_partition_info, + .parts = snapper9260_nand_partitions, + .num_parts = ARRAY_SIZE(snapper9260_nand_partitions), .bus_width_16 = 0, }; diff --git a/arch/arm/mach-at91/board-usb-a9260.c b/arch/arm/mach-at91/board-usb-a9260.c index 8c4c1a0..73e5723 100644 --- a/arch/arm/mach-at91/board-usb-a9260.c +++ b/arch/arm/mach-at91/board-usb-a9260.c @@ -104,19 +104,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { } }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected .rdy_pin = AT91_PIN_PC13, .enable_pin = AT91_PIN_PC14, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-usb-a9263.c b/arch/arm/mach-at91/board-usb-a9263.c index 25e7937..909fd97 100644 --- a/arch/arm/mach-at91/board-usb-a9263.c +++ b/arch/arm/mach-at91/board-usb-a9263.c @@ -117,19 +117,14 @@ static struct mtd_partition __initdata ek_nand_partition[] = { } }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(ek_nand_partition); - return ek_nand_partition; -} - static struct atmel_nand_data __initdata ek_nand_data = { .ale = 21, .cle = 22, // .det_pin = ... not connected .rdy_pin = AT91_PIN_PA22, .enable_pin = AT91_PIN_PD15, - .partition_info = nand_partitions, + .parts = ek_nand_partition, + .num_parts = ARRAY_SIZE(ek_nand_partition), }; static struct sam9_smc_config __initdata ek_nand_smc_config = { diff --git a/arch/arm/mach-at91/board-yl-9200.c b/arch/arm/mach-at91/board-yl-9200.c index 95edcbd..7511fb8 100644 --- a/arch/arm/mach-at91/board-yl-9200.c +++ b/arch/arm/mach-at91/board-yl-9200.c @@ -172,19 +172,14 @@ static struct mtd_partition __initdata yl9200_nand_partition[] = { } }; -static struct mtd_partition * __init nand_partitions(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(yl9200_nand_partition); - return yl9200_nand_partition; -} - static struct atmel_nand_data __initdata yl9200_nand_data = { .ale = 6, .cle = 7, // .det_pin = ... not connected .rdy_pin = AT91_PIN_PC14, /* R/!B (Sheet10) */ .enable_pin = AT91_PIN_PC15, /* !CE (Sheet10) */ - .partition_info = nand_partitions, + .parts = yl9200_nand_partition, + .num_parts = ARRAY_SIZE(yl9200_nand_partition), }; /* diff --git a/arch/arm/mach-at91/include/mach/board.h b/arch/arm/mach-at91/include/mach/board.h index ed544a0..6643531 100644 --- a/arch/arm/mach-at91/include/mach/board.h +++ b/arch/arm/mach-at91/include/mach/board.h @@ -112,7 +112,8 @@ struct atmel_nand_data { u8 ale; /* address line number connected to ALE */ u8 cle; /* address line number connected to CLE */ u8 bus_width_16; /* buswidth is 16 bit */ - struct mtd_partition* (*partition_info)(int, int*); + struct mtd_partition *parts; + unsigned int num_parts; }; extern void __init at91_add_device_nand(struct atmel_nand_data *data); diff --git a/arch/avr32/boards/atngw100/setup.c b/arch/avr32/boards/atngw100/setup.c index fafed4c..1f17bde 100644 --- a/arch/avr32/boards/atngw100/setup.c +++ b/arch/avr32/boards/atngw100/setup.c @@ -90,11 +90,6 @@ static struct mtd_partition nand_partitions[] = { }, }; -static struct mtd_partition *nand_part_info(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(nand_partitions); - return nand_partitions; -} static struct atmel_nand_data atngw100mkii_nand_data __initdata = { .cle = 21, @@ -102,7 +97,8 @@ static struct atmel_nand_data atngw100mkii_nand_data __initdata = { .rdy_pin = GPIO_PIN_PB(28), .enable_pin = GPIO_PIN_PE(23), .bus_width_16 = true, - .partition_info = nand_part_info, + .parts = nand_partitions, + .num_parts = ARRAY_SIZE(nand_partitions), }; #endif diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c index 6ce30fb..4643ff5 100644 --- a/arch/avr32/boards/atstk1000/atstk1002.c +++ b/arch/avr32/boards/atstk1000/atstk1002.c @@ -90,18 +90,13 @@ static struct mtd_partition nand_partitions[] = { }, }; -static struct mtd_partition *nand_part_info(int size, int *num_partitions) -{ - *num_partitions = ARRAY_SIZE(nand_partitions); - return nand_partitions; -} - static struct atmel_nand_data atstk1006_nand_data __initdata = { .cle = 21, .ale = 22, .rdy_pin = GPIO_PIN_PB(30), .enable_pin = GPIO_PIN_PB(29), - .partition_info = nand_part_info, + .parts = nand_partitions, + .num_parts = ARRAY_SIZE(num_partitions), }; #endif diff --git a/arch/avr32/mach-at32ap/include/mach/board.h b/arch/avr32/mach-at32ap/include/mach/board.h index 679458d..5d7ffca 100644 --- a/arch/avr32/mach-at32ap/include/mach/board.h +++ b/arch/avr32/mach-at32ap/include/mach/board.h @@ -128,7 +128,8 @@ struct atmel_nand_data { u8 ale; /* address line number connected to ALE */ u8 cle; /* address line number connected to CLE */ u8 bus_width_16; /* buswidth is 16 bit */ - struct mtd_partition *(*partition_info)(int size, int *num_partitions); + struct mtd_partition *parts; + unsigned int num_parts; }; struct platform_device * at32_add_device_nand(unsigned int id, struct atmel_nand_data *data); diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 79a7ef2..01fb5f0 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -660,9 +660,10 @@ static int __init atmel_nand_probe(struct platform_device *pdev) num_partitions = parse_mtd_partitions(mtd, part_probes, &partitions, 0); #endif - if (num_partitions <= 0 && host->board->partition_info) - partitions = host->board->partition_info(mtd->size, - &num_partitions); + if (num_partitions <= 0 && host->board->parts) { + partitions = host->board->parts; + num_partitions = host->board->num_parts; + } if ((!partitions) || (num_partitions == 0)) { printk(KERN_ERR "atmel_nand: No partitions defined, or unsupported device.\n"); -- cgit v0.10.2 From d3f2ed520b51f06d4f3c8c96bd4ba6e7e57643a3 Mon Sep 17 00:00:00 2001 From: Jiri Pinkava Date: Wed, 1 Jun 2011 15:56:40 +0200 Subject: mtd: nand: remove meaningless delay from nand_unlock This delay is meaningless. If delay is needed it is device specific and must be reimplemented by specific driver, otherwise no delay is needed. Signed-off-by: Jiri Pinkava Acked-by: Vimal Singh Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 422e787..e57ea83 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -915,7 +915,6 @@ static int __nand_unlock(struct mtd_info *mtd, loff_t ofs, /* Call wait ready function */ status = chip->waitfunc(mtd, chip); - udelay(1000); /* See if device thinks it succeeded */ if (status & 0x01) { DEBUG(MTD_DEBUG_LEVEL0, "%s: Error status = 0x%08x\n", @@ -1024,7 +1023,6 @@ int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) /* Call wait ready function */ status = chip->waitfunc(mtd, chip); - udelay(1000); /* See if device thinks it succeeded */ if (status & 0x01) { DEBUG(MTD_DEBUG_LEVEL0, "%s: Error status = 0x%08x\n", -- cgit v0.10.2 From 06947494bea31e536eba1d5c7d95791a9d2b5a99 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 15:54:08 +0400 Subject: mtd: drop ceiva map driver It's a Ceiva/Polaroid PhotoMax Digital Picture Frame. Support for it was commited before 2.6.12-rc2, current git contains no functional changes since it's start. Driver containing MTD support for that board was broken for some time already. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index c0c328c..11cc230 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -412,14 +412,6 @@ config MTD_IMPA7 This enables access to the NOR Flash on the impA7 board of implementa GmbH. If you have such a board, say 'Y' here. -config MTD_CEIVA - tristate "JEDEC Flash device mapped on Ceiva/Polaroid PhotoMax Digital Picture Frame" - depends on MTD_JEDECPROBE && ARCH_CEIVA - help - This enables access to the flash chips on the Ceiva/Polaroid - PhotoMax Digital Picture Frame. - If you have such a device, say 'Y'. - config MTD_H720X tristate "Hynix evaluation board mappings" depends on MTD_CFI && ( ARCH_H7201 || ARCH_H7202 ) diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index cb48b11..d6379fe 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -19,7 +19,6 @@ obj-$(CONFIG_MTD_CK804XROM) += ck804xrom.o obj-$(CONFIG_MTD_TSUNAMI) += tsunami_flash.o obj-$(CONFIG_MTD_PXA2XX) += pxa2xx-flash.o obj-$(CONFIG_MTD_MBX860) += mbx860.o -obj-$(CONFIG_MTD_CEIVA) += ceiva.o obj-$(CONFIG_MTD_OCTAGON) += octagon-5066.o obj-$(CONFIG_MTD_PHYSMAP) += physmap.o obj-$(CONFIG_MTD_PHYSMAP_OF) += physmap_of.o diff --git a/drivers/mtd/maps/ceiva.c b/drivers/mtd/maps/ceiva.c deleted file mode 100644 index 06f9c98..0000000 --- a/drivers/mtd/maps/ceiva.c +++ /dev/null @@ -1,341 +0,0 @@ -/* - * Ceiva flash memory driver. - * Copyright (C) 2002 Rob Scott - * - * Note: this driver supports jedec compatible devices. Modification - * for CFI compatible devices should be straight forward: change - * jedec_probe to cfi_probe. - * - * Based on: sa1100-flash.c, which has the following copyright: - * Flash memory access on SA11x0 based devices - * - * (C) 2000 Nicolas Pitre - * - */ - -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include -#include -#include -#include - -/* - * This isn't complete yet, so... - */ -#define CONFIG_MTD_CEIVA_STATICMAP - -#ifdef CONFIG_MTD_CEIVA_STATICMAP -/* - * See include/linux/mtd/partitions.h for definition of the mtd_partition - * structure. - * - * Please note: - * 1. The flash size given should be the largest flash size that can - * be accommodated. - * - * 2. The bus width must defined in clps_setup_flash. - * - * The MTD layer will detect flash chip aliasing and reduce the size of - * the map accordingly. - * - */ - -#ifdef CONFIG_ARCH_CEIVA -/* Flash / Partition sizing */ -/* For the 28F8003, we use the block mapping to calcuate the sizes */ -#define MAX_SIZE_KiB (16 + 8 + 8 + 96 + (7*128)) -#define BOOT_PARTITION_SIZE_KiB (16) -#define PARAMS_PARTITION_SIZE_KiB (8) -#define KERNEL_PARTITION_SIZE_KiB (4*128) -/* Use both remaining portion of first flash, and all of second flash */ -#define ROOT_PARTITION_SIZE_KiB (3*128) + (8*128) - -static struct mtd_partition ceiva_partitions[] = { - { - .name = "Ceiva BOOT partition", - .size = BOOT_PARTITION_SIZE_KiB*1024, - .offset = 0, - - },{ - .name = "Ceiva parameters partition", - .size = PARAMS_PARTITION_SIZE_KiB*1024, - .offset = (16 + 8) * 1024, - },{ - .name = "Ceiva kernel partition", - .size = (KERNEL_PARTITION_SIZE_KiB)*1024, - .offset = 0x20000, - - },{ - .name = "Ceiva root filesystem partition", - .offset = MTDPART_OFS_APPEND, - .size = (ROOT_PARTITION_SIZE_KiB)*1024, - } -}; -#endif - -static int __init clps_static_partitions(struct mtd_partition **parts) -{ - int nb_parts = 0; - -#ifdef CONFIG_ARCH_CEIVA - if (machine_is_ceiva()) { - *parts = ceiva_partitions; - nb_parts = ARRAY_SIZE(ceiva_partitions); - } -#endif - return nb_parts; -} -#endif - -struct clps_info { - unsigned long base; - unsigned long size; - int width; - void *vbase; - struct map_info *map; - struct mtd_info *mtd; - struct resource *res; -}; - -#define NR_SUBMTD 4 - -static struct clps_info info[NR_SUBMTD]; - -static int __init clps_setup_mtd(struct clps_info *clps, int nr, struct mtd_info **rmtd) -{ - struct mtd_info *subdev[nr]; - struct map_info *maps; - int i, found = 0, ret = 0; - - /* - * Allocate the map_info structs in one go. - */ - maps = kzalloc(sizeof(struct map_info) * nr, GFP_KERNEL); - if (!maps) - return -ENOMEM; - /* - * Claim and then map the memory regions. - */ - for (i = 0; i < nr; i++) { - if (clps[i].base == (unsigned long)-1) - break; - - clps[i].res = request_mem_region(clps[i].base, clps[i].size, "clps flash"); - if (!clps[i].res) { - ret = -EBUSY; - break; - } - - clps[i].map = maps + i; - - clps[i].map->name = "clps flash"; - clps[i].map->phys = clps[i].base; - - clps[i].vbase = ioremap(clps[i].base, clps[i].size); - if (!clps[i].vbase) { - ret = -ENOMEM; - break; - } - - clps[i].map->virt = (void __iomem *)clps[i].vbase; - clps[i].map->bankwidth = clps[i].width; - clps[i].map->size = clps[i].size; - - simple_map_init(&clps[i].map); - - clps[i].mtd = do_map_probe("jedec_probe", clps[i].map); - if (clps[i].mtd == NULL) { - ret = -ENXIO; - break; - } - clps[i].mtd->owner = THIS_MODULE; - subdev[i] = clps[i].mtd; - - printk(KERN_INFO "clps flash: JEDEC device at 0x%08lx, %dMiB, " - "%d-bit\n", clps[i].base, clps[i].mtd->size >> 20, - clps[i].width * 8); - found += 1; - } - - /* - * ENXIO is special. It means we didn't find a chip when - * we probed. We need to tear down the mapping, free the - * resource and mark it as such. - */ - if (ret == -ENXIO) { - iounmap(clps[i].vbase); - clps[i].vbase = NULL; - release_resource(clps[i].res); - clps[i].res = NULL; - } - - /* - * If we found one device, don't bother with concat support. - * If we found multiple devices, use concat if we have it - * available, otherwise fail. - */ - if (ret == 0 || ret == -ENXIO) { - if (found == 1) { - *rmtd = subdev[0]; - ret = 0; - } else if (found > 1) { - /* - * We detected multiple devices. Concatenate - * them together. - */ - *rmtd = mtd_concat_create(subdev, found, - "clps flash"); - if (*rmtd == NULL) - ret = -ENXIO; - } - } - - /* - * If we failed, clean up. - */ - if (ret) { - do { - if (clps[i].mtd) - map_destroy(clps[i].mtd); - if (clps[i].vbase) - iounmap(clps[i].vbase); - if (clps[i].res) - release_resource(clps[i].res); - } while (i--); - - kfree(maps); - } - - return ret; -} - -static void __exit clps_destroy_mtd(struct clps_info *clps, struct mtd_info *mtd) -{ - int i; - - mtd_device_unregister(mtd); - - if (mtd != clps[0].mtd) - mtd_concat_destroy(mtd); - - for (i = NR_SUBMTD; i >= 0; i--) { - if (clps[i].mtd) - map_destroy(clps[i].mtd); - if (clps[i].vbase) - iounmap(clps[i].vbase); - if (clps[i].res) - release_resource(clps[i].res); - } - kfree(clps[0].map); -} - -/* - * We define the memory space, size, and width for the flash memory - * space here. - */ - -static int __init clps_setup_flash(void) -{ - int nr = 0; - -#ifdef CONFIG_ARCH_CEIVA - if (machine_is_ceiva()) { - info[0].base = CS0_PHYS_BASE; - info[0].size = SZ_32M; - info[0].width = CEIVA_FLASH_WIDTH; - info[1].base = CS1_PHYS_BASE; - info[1].size = SZ_32M; - info[1].width = CEIVA_FLASH_WIDTH; - nr = 2; - } -#endif - return nr; -} - -static struct mtd_partition *parsed_parts; -static const char *probes[] = { "cmdlinepart", "RedBoot", NULL }; - -static void __init clps_locate_partitions(struct mtd_info *mtd) -{ - const char *part_type = NULL; - int nr_parts = 0; - do { - /* - * Partition selection stuff. - */ - nr_parts = parse_mtd_partitions(mtd, probes, &parsed_parts, 0); - if (nr_parts > 0) { - part_type = "command line"; - break; - } -#ifdef CONFIG_MTD_CEIVA_STATICMAP - nr_parts = clps_static_partitions(&parsed_parts); - if (nr_parts > 0) { - part_type = "static"; - break; - } - printk("found: %d partitions\n", nr_parts); -#endif - } while (0); - - if (nr_parts == 0) { - printk(KERN_NOTICE "clps flash: no partition info " - "available, registering whole flash\n"); - mtd_device_register(mtd, NULL, 0); - } else { - printk(KERN_NOTICE "clps flash: using %s partition " - "definition\n", part_type); - mtd_device_register(mtd, parsed_parts, nr_parts); - } - - /* Always succeeds. */ -} - -static void __exit clps_destroy_partitions(void) -{ - kfree(parsed_parts); -} - -static struct mtd_info *mymtd; - -static int __init clps_mtd_init(void) -{ - int ret; - int nr; - - nr = clps_setup_flash(); - if (nr < 0) - return nr; - - ret = clps_setup_mtd(info, nr, &mymtd); - if (ret) - return ret; - - clps_locate_partitions(mymtd); - - return 0; -} - -static void __exit clps_mtd_cleanup(void) -{ - clps_destroy_mtd(info, mymtd); - clps_destroy_partitions(); -} - -module_init(clps_mtd_init); -module_exit(clps_mtd_cleanup); - -MODULE_AUTHOR("Rob Scott"); -MODULE_DESCRIPTION("Cirrus Logic JEDEC map driver"); -MODULE_LICENSE("GPL"); -- cgit v0.10.2 From 13e0fe49f676607688da7475c33540ec5dac53b5 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:51:14 +0400 Subject: mtd: drop physmap_configure physmap_configure() and physmap_set_partitions() have no users in kernel. Out of kernel users should have been converted to regular platform device long ago. Drop support for this obsolete API. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 11cc230..46eca3b 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -41,8 +41,6 @@ config MTD_PHYSMAP_START are mapped on your particular target board. Refer to the memory map which should hopefully be in the documentation for your board. - Ignore this option if you use run-time physmap configuration - (i.e., run-time calling physmap_configure()). config MTD_PHYSMAP_LEN hex "Physical length of flash mapping" @@ -55,8 +53,6 @@ config MTD_PHYSMAP_LEN than the total amount of flash present. Refer to the memory map which should hopefully be in the documentation for your board. - Ignore this option if you use run-time physmap configuration - (i.e., run-time calling physmap_configure()). config MTD_PHYSMAP_BANKWIDTH int "Bank width in octets" @@ -67,8 +63,6 @@ config MTD_PHYSMAP_BANKWIDTH in octets. For example, if you have a data bus width of 32 bits, you would set the bus width octet value to 4. This is used internally by the CFI drivers. - Ignore this option if you use run-time physmap configuration - (i.e., run-time calling physmap_configure()). config MTD_PHYSMAP_OF tristate "Flash device in physical memory map based on OF description" diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c index f64cee4..2174d10 100644 --- a/drivers/mtd/maps/physmap.c +++ b/drivers/mtd/maps/physmap.c @@ -245,21 +245,6 @@ static struct platform_device physmap_flash = { .num_resources = 1, .resource = &physmap_flash_resource, }; - -void physmap_configure(unsigned long addr, unsigned long size, - int bankwidth, void (*set_vpp)(struct map_info *, int)) -{ - physmap_flash_resource.start = addr; - physmap_flash_resource.end = addr + size - 1; - physmap_flash_data.width = bankwidth; - physmap_flash_data.set_vpp = set_vpp; -} - -void physmap_set_partitions(struct mtd_partition *parts, int num_parts) -{ - physmap_flash_data.nr_parts = num_parts; - physmap_flash_data.parts = parts; -} #endif static int __init physmap_init(void) diff --git a/include/linux/mtd/physmap.h b/include/linux/mtd/physmap.h index e5f21d2..04e0181 100644 --- a/include/linux/mtd/physmap.h +++ b/include/linux/mtd/physmap.h @@ -32,21 +32,4 @@ struct physmap_flash_data { struct mtd_partition *parts; }; -/* - * Board needs to specify the exact mapping during their setup time. - */ -void physmap_configure(unsigned long addr, unsigned long size, - int bankwidth, void (*set_vpp)(struct map_info *, int) ); - -/* - * Machines that wish to do flash partition may want to call this function in - * their setup routine. - * - * physmap_set_partitions(mypartitions, num_parts); - * - * Note that one can always override this hard-coded partition with - * command line partition (you need to enable CONFIG_MTD_CMDLINE_PARTS). - */ -void physmap_set_partitions(struct mtd_partition *parts, int num_parts); - #endif /* __LINUX_MTD_PHYSMAP__ */ -- cgit v0.10.2 From 2e7485f49984ad9cea2d039acfd0554217710cce Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:51:15 +0400 Subject: mtd: cafe_nand: drop reference to CONFIG_MTD_CMDLINE_PARTS There is no need to guard mtd->name with CONFIG_MTD_CMDLINE_PARTS as name can be used by other parts. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index d0eed49..88ac4b5 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -803,9 +803,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev, /* We register the whole device first, separate from the partitions */ mtd_device_register(mtd, NULL, 0); -#ifdef CONFIG_MTD_CMDLINE_PARTS mtd->name = "cafe_nand"; -#endif nr_parts = parse_mtd_partitions(mtd, part_probes, &parts, 0); if (nr_parts > 0) { cafe->parts = parts; -- cgit v0.10.2 From 5c4eefbd5bb82a525ce5340cc8a91ab6dffeb490 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:51:16 +0400 Subject: mtd: mtdpart: default to cmdlinepart, NULL partitions probing Lots of MTD devices default to cmdlinepart, NULL as partition parsing order. Make it a default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 630be3e..3477e16 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -712,12 +712,17 @@ int deregister_mtd_parser(struct mtd_part_parser *p) } EXPORT_SYMBOL_GPL(deregister_mtd_parser); +static const char *default_mtd_part_types[] = {"cmdlinepart", NULL}; + int parse_mtd_partitions(struct mtd_info *master, const char **types, struct mtd_partition **pparts, unsigned long origin) { struct mtd_part_parser *parser; int ret = 0; + if (!types) + types = default_mtd_part_types; + for ( ; ret <= 0 && *types; types++) { parser = get_partition_parser(*types); if (!parser && !request_module("%s", *types)) -- cgit v0.10.2 From 4d1220f6fa03f60a3d3995683911d29ae9c317f7 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:51:17 +0400 Subject: mtd: m25p80 don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 35180e4..70d5fca 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -968,13 +968,7 @@ static int __devinit m25p_probe(struct spi_device *spi) /* partitions should match sector boundaries; and it may be good to * use readonly partitions for writeprotected sectors (BP2..BP0). */ - if (mtd_has_cmdlinepart()) { - static const char *part_probes[] - = { "cmdlinepart", NULL, }; - - nr_parts = parse_mtd_partitions(&flash->mtd, - part_probes, &parts, 0); - } + nr_parts = parse_mtd_partitions(&flash->mtd, NULL, &parts, 0); if (nr_parts <= 0 && data && data->parts) { parts = data->parts; -- cgit v0.10.2 From ae2dbad7e9ee2889e57b5ebac5a60d2d4f03439e Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:51:18 +0400 Subject: mtd: drop mtd_has_cmdlinepart() This function is unused now. Drop it. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 3a6f037..08c9c7b 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -83,12 +83,6 @@ static inline int of_mtd_parse_partitions(struct device *dev, } #endif -#ifdef CONFIG_MTD_CMDLINE_PARTS -static inline int mtd_has_cmdlinepart(void) { return 1; } -#else -static inline int mtd_has_cmdlinepart(void) { return 0; } -#endif - int mtd_is_partition(struct mtd_info *mtd); int mtd_add_partition(struct mtd_info *master, char *name, long long offset, long long length); -- cgit v0.10.2 From 5507766b639e53b9230484588eba8b4e18d0563b Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Thu, 2 Jun 2011 11:38:26 -0700 Subject: mtd: nand: remove unnecessary TODO I believe this TODO was unnecessary back when it was introduced: commit d1e1f4e42b5df063712ca2926e50c07b95c96b96 mtd: nand: add support for reading ONFI parameters... Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index e57ea83..1380bf6 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -3135,7 +3135,6 @@ ident_done: if (mtd->writesize > 512 && chip->cmdfunc == nand_command) chip->cmdfunc = nand_command_lp; - /* TODO onfi flash name */ printk(KERN_INFO "NAND device: Manufacturer ID:" " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, *dev_id, nand_manuf_ids[maf_idx].name, -- cgit v0.10.2 From b07948251f563379885ac92412fb3885c976e423 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Fri, 3 Jun 2011 09:12:15 +0800 Subject: mtd: denali: remove calling mtd_device_unregister() after nand_release() The implementation of nand_release() already call mtd_device_unregister(), no need to call it again. Signed-off-by: Axel Lin Acked-by: Jamie Iles Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index ee30145..eebdfb5 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -1677,7 +1677,6 @@ static void denali_pci_remove(struct pci_dev *dev) struct denali_nand_info *denali = pci_get_drvdata(dev); nand_release(&denali->mtd); - mtd_device_unregister(&denali->mtd); denali_irq_cleanup(dev->irq, denali); -- cgit v0.10.2 From 43c6871cae298e28700ca1ea76dc94b5f69446bc Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Fri, 3 Jun 2011 09:51:53 +0800 Subject: mtd: nuc900_nand: add missing nand_release in nuc900_nand_remove Signed-off-by: Axel Lin Acked-by: Wan ZongShun Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nuc900_nand.c b/drivers/mtd/nand/nuc900_nand.c index 9c30a0b..fa8faed 100644 --- a/drivers/mtd/nand/nuc900_nand.c +++ b/drivers/mtd/nand/nuc900_nand.c @@ -339,6 +339,7 @@ static int __devexit nuc900_nand_remove(struct platform_device *pdev) struct nuc900_nand *nuc900_nand = platform_get_drvdata(pdev); struct resource *res; + nand_release(&nuc900_nand->mtd); iounmap(nuc900_nand->reg); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -- cgit v0.10.2 From d80932b2dc497faa27e415c12f56f6ae1d087204 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Fri, 3 Jun 2011 09:53:26 +0800 Subject: mtd: nomadik_nand: add missing nand_release in nomadik_nand_remove Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nomadik_nand.c b/drivers/mtd/nand/nomadik_nand.c index b6a5c86..b463ecf 100644 --- a/drivers/mtd/nand/nomadik_nand.c +++ b/drivers/mtd/nand/nomadik_nand.c @@ -187,6 +187,7 @@ static int nomadik_nand_remove(struct platform_device *pdev) pdata->exit(); if (host) { + nand_release(&host->mtd); iounmap(host->cmd_va); iounmap(host->data_va); iounmap(host->addr_va); -- cgit v0.10.2 From 1a3591920e5100ba112a19e10a09ce7a5da1ab23 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Fri, 3 Jun 2011 13:14:10 +0800 Subject: mtd: pxa3xx_nand: fix a memory leak In pxa3xx_nand_remove, we should call nand_release instead of mtd_device_unregister to properly free bad block table memory and bad block descriptor memory. Signed-off-by: Axel Lin Acked-by: Lei Wen Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 1fb3b3a..f7040ea 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -1119,7 +1119,7 @@ static int pxa3xx_nand_remove(struct platform_device *pdev) clk_put(info->clk); if (mtd) { - mtd_device_unregister(mtd); + nand_release(mtd); kfree(mtd); } return 0; -- cgit v0.10.2 From 82e023ab4e144da7f83fe7e6c93a09be2f30ff07 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Fri, 3 Jun 2011 13:15:30 +0800 Subject: mtd: fsmc_nand: fix a memory leak In fsmc_nand_remove, we should call nand_release instead of mtd_device_unregister to properly free bad block table memory and bad block descriptor memory. Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c index e9b275a..8a5f1aa 100644 --- a/drivers/mtd/nand/fsmc_nand.c +++ b/drivers/mtd/nand/fsmc_nand.c @@ -822,7 +822,7 @@ static int fsmc_nand_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); if (host) { - mtd_device_unregister(&host->mtd); + nand_release(&host->mtd); clk_disable(host->clk); clk_put(host->clk); -- cgit v0.10.2 From 7578ca927b1a2a0445c9a3166d05462b9ffd4c06 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Fri, 3 Jun 2011 14:10:22 +0800 Subject: mtd: mtdblock: Use DEFINE_MUTEX() for mtdblks_lock mtdblks_lock can be initialized automatically with DEFINE_MUTEX() rather than explicitly calling mutex_init(). Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c index 3326615..1976b6c 100644 --- a/drivers/mtd/mtdblock.c +++ b/drivers/mtd/mtdblock.c @@ -44,7 +44,7 @@ struct mtdblk_dev { enum { STATE_EMPTY, STATE_CLEAN, STATE_DIRTY } cache_state; }; -static struct mutex mtdblks_lock; +static DEFINE_MUTEX(mtdblks_lock); /* * Cache stuff... @@ -389,8 +389,6 @@ static struct mtd_blktrans_ops mtdblock_tr = { static int __init init_mtdblock(void) { - mutex_init(&mtdblks_lock); - return register_mtd_blktrans(&mtdblock_tr); } -- cgit v0.10.2 From 1676bc18c6648c378029dad365756e12be7da025 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Fri, 3 Jun 2011 15:34:33 +0800 Subject: mtd: pxa3xx_nand: remove unused variable 'mtd' Remove unused variable 'mtd' to eliminate below warning. CC drivers/mtd/nand/pxa3xx_nand.o drivers/mtd/nand/pxa3xx_nand.c: In function 'pxa3xx_nand_suspend': drivers/mtd/nand/pxa3xx_nand.c:1167: warning: unused variable 'mtd' drivers/mtd/nand/pxa3xx_nand.c: In function 'pxa3xx_nand_resume': drivers/mtd/nand/pxa3xx_nand.c:1180: warning: unused variable 'mtd' Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index f7040ea..e11f926 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -1164,7 +1164,6 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) static int pxa3xx_nand_suspend(struct platform_device *pdev, pm_message_t state) { struct pxa3xx_nand_info *info = platform_get_drvdata(pdev); - struct mtd_info *mtd = info->mtd; if (info->state) { dev_err(&pdev->dev, "driver busy, state = %d\n", info->state); @@ -1177,7 +1176,6 @@ static int pxa3xx_nand_suspend(struct platform_device *pdev, pm_message_t state) static int pxa3xx_nand_resume(struct platform_device *pdev) { struct pxa3xx_nand_info *info = platform_get_drvdata(pdev); - struct mtd_info *mtd = info->mtd; nand_writel(info, NDTR0CS0, info->ndtr0cs0); nand_writel(info, NDTR1CS0, info->ndtr1cs0); -- cgit v0.10.2 From 1fc468d5d55a0d9101e482ccb96b1b2879a73882 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:42 +0400 Subject: mtd: mtd_dataflash don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index 13749d4..4d4a9cd 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -677,12 +677,7 @@ add_dataflash_otp(struct spi_device *spi, char *name, pagesize, otp_tag); dev_set_drvdata(&spi->dev, priv); - if (mtd_has_cmdlinepart()) { - static const char *part_probes[] = { "cmdlinepart", NULL, }; - - nr_parts = parse_mtd_partitions(device, part_probes, &parts, - 0); - } + nr_parts = parse_mtd_partitions(device, NULL, &parts, 0); if (nr_parts <= 0 && pdata && pdata->parts) { parts = pdata->parts; -- cgit v0.10.2 From adaf2a5d0887f9a317eca8550e59b0c92876c64f Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:43 +0400 Subject: mtd: sst25l don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/sst25l.c b/drivers/mtd/devices/sst25l.c index 83e80c6..52eb92e 100644 --- a/drivers/mtd/devices/sst25l.c +++ b/drivers/mtd/devices/sst25l.c @@ -423,13 +423,7 @@ static int __devinit sst25l_probe(struct spi_device *spi) flash->mtd.numeraseregions); - if (mtd_has_cmdlinepart()) { - static const char *part_probes[] = {"cmdlinepart", NULL}; - - nr_parts = parse_mtd_partitions(&flash->mtd, - part_probes, - &parts, 0); - } + nr_parts = parse_mtd_partitions(&flash->mtd, NULL, &parts, 0); if (nr_parts <= 0 && data && data->parts) { parts = data->parts; -- cgit v0.10.2 From 3af035c96ac72d2d301f04ad7f253e342a7dc54b Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:44 +0400 Subject: mtd: h720x-flash don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/h720x-flash.c b/drivers/mtd/maps/h720x-flash.c index 7f03586..f331a2c 100644 --- a/drivers/mtd/maps/h720x-flash.c +++ b/drivers/mtd/maps/h720x-flash.c @@ -60,8 +60,6 @@ static struct mtd_partition h720x_partitions[] = { static int nr_mtd_parts; static struct mtd_partition *mtd_parts; -static const char *probes[] = { "cmdlinepart", NULL }; - /* * Initialize FLASH support */ @@ -92,7 +90,7 @@ static int __init h720x_mtd_init(void) if (mymtd) { mymtd->owner = THIS_MODULE; - nr_mtd_parts = parse_mtd_partitions(mymtd, probes, &mtd_parts, 0); + nr_mtd_parts = parse_mtd_partitions(mymtd, NULL, &mtd_parts, 0); if (nr_mtd_parts > 0) part_type = "command line"; if (nr_mtd_parts <= 0) { -- cgit v0.10.2 From cec25c7290d1b9d514686be97e9e62c89dd3308f Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:45 +0400 Subject: mtd: impa7 don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/impa7.c b/drivers/mtd/maps/impa7.c index 404a50c..2d45a48 100644 --- a/drivers/mtd/maps/impa7.c +++ b/drivers/mtd/maps/impa7.c @@ -61,7 +61,6 @@ static struct mtd_partition static_partitions[] = static int mtd_parts_nb[NUM_FLASHBANKS]; static struct mtd_partition *mtd_parts[NUM_FLASHBANKS]; -static const char *probes[] = { "cmdlinepart", NULL }; static int __init init_impa7(void) { @@ -98,7 +97,7 @@ static int __init init_impa7(void) impa7_mtd[i]->owner = THIS_MODULE; devicesfound++; mtd_parts_nb[i] = parse_mtd_partitions(impa7_mtd[i], - probes, + NULL, &mtd_parts[i], 0); if (mtd_parts_nb[i] > 0) { -- cgit v0.10.2 From 8d130a74e40da7dc4c572fbf0ba533fac17f4190 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:46 +0400 Subject: mtd: intel_vr_nor don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/intel_vr_nor.c b/drivers/mtd/maps/intel_vr_nor.c index d2f47be..fd612c7 100644 --- a/drivers/mtd/maps/intel_vr_nor.c +++ b/drivers/mtd/maps/intel_vr_nor.c @@ -72,11 +72,10 @@ static void __devexit vr_nor_destroy_partitions(struct vr_nor_mtd *p) static int __devinit vr_nor_init_partitions(struct vr_nor_mtd *p) { struct mtd_partition *parts; - static const char *part_probes[] = { "cmdlinepart", NULL }; /* register the flash bank */ /* partition the flash bank */ - p->nr_parts = parse_mtd_partitions(p->info, part_probes, &parts, 0); + p->nr_parts = parse_mtd_partitions(p->info, NULL, &parts, 0); return mtd_device_register(p->info, parts, p->nr_parts); } -- cgit v0.10.2 From 2ef3855a91300bc0dae0ddc8689e4ee64abe6a8a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:47 +0400 Subject: mtd: rbtx4939-flash don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Artem: tweaked the patch Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/rbtx4939-flash.c b/drivers/mtd/maps/rbtx4939-flash.c index 761fb45..5d15b6b 100644 --- a/drivers/mtd/maps/rbtx4939-flash.c +++ b/drivers/mtd/maps/rbtx4939-flash.c @@ -50,7 +50,6 @@ static int rbtx4939_flash_remove(struct platform_device *dev) } static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL }; -static const char *part_probe_types[] = { "cmdlinepart", NULL }; static int rbtx4939_flash_probe(struct platform_device *dev) { @@ -107,9 +106,7 @@ static int rbtx4939_flash_probe(struct platform_device *dev) info->mtd->owner = THIS_MODULE; if (err) goto err_out; - - err = parse_mtd_partitions(info->mtd, part_probe_types, - &info->parts, 0); + err = parse_mtd_partitions(info->mtd, NULL, &info->parts, 0); if (err > 0) { mtd_device_register(info->mtd, info->parts, err); info->nr_parts = err; -- cgit v0.10.2 From 2108c3bc632962422b7929e715ed6bbb837ac25c Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:48 +0400 Subject: mtd: atmel_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Artem: tweaked the patch Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 01fb5f0..47ece8e 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -481,10 +481,6 @@ static void atmel_nand_hwctl(struct mtd_info *mtd, int mode) } } -#ifdef CONFIG_MTD_CMDLINE_PARTS -static const char *part_probes[] = { "cmdlinepart", NULL }; -#endif - /* * Probe for the NAND device. */ @@ -655,11 +651,8 @@ static int __init atmel_nand_probe(struct platform_device *pdev) goto err_scan_tail; } -#ifdef CONFIG_MTD_CMDLINE_PARTS mtd->name = "atmel_nand"; - num_partitions = parse_mtd_partitions(mtd, part_probes, - &partitions, 0); -#endif + num_partitions = parse_mtd_partitions(mtd, NULL, &partitions, 0); if (num_partitions <= 0 && host->board->parts) { partitions = host->board->parts; num_partitions = host->board->num_parts; -- cgit v0.10.2 From caf32f4e8ca84ed1b0570176770f7209e7c304fe Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:49 +0400 Subject: mtd: bcm_umi_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Artem: tweaked the patch Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c index e3ffc4c..b1b7b16 100644 --- a/drivers/mtd/nand/bcm_umi_nand.c +++ b/drivers/mtd/nand/bcm_umi_nand.c @@ -52,8 +52,6 @@ static const __devinitconst char gBanner[] = KERN_INFO \ "BCM UMI MTD NAND Driver: 1.00\n"; -const char *part_probes[] = { "cmdlinepart", NULL }; - #if NAND_ECC_BCH static uint8_t scan_ff_pattern[] = { 0xff }; @@ -496,9 +494,8 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) struct mtd_partition *partition_info; board_mtd->name = "bcm_umi-nand"; - nr_partitions = - parse_mtd_partitions(board_mtd, part_probes, - &partition_info, 0); + nr_partitions = parse_mtd_partitions(board_mtd, NULL, + &partition_info, 0); if (nr_partitions <= 0) { printk(KERN_ERR "BCM UMI NAND: Too few partitions - %d\n", -- cgit v0.10.2 From 00205e831326f7fc22888de152b313c89a43a110 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:52 +0400 Subject: mtd: cmx270_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/cmx270_nand.c b/drivers/mtd/nand/cmx270_nand.c index 6fc043a..f8f5b7c 100644 --- a/drivers/mtd/nand/cmx270_nand.c +++ b/drivers/mtd/nand/cmx270_nand.c @@ -50,8 +50,6 @@ static struct mtd_partition partition_info[] = { }; #define NUM_PARTITIONS (ARRAY_SIZE(partition_info)) -const char *part_probes[] = { "cmdlinepart", NULL }; - static u_char cmx270_read_byte(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; @@ -222,14 +220,13 @@ static int __init cmx270_init(void) goto err_scan; } -#ifdef CONFIG_MTD_CMDLINE_PARTS - mtd_parts_nb = parse_mtd_partitions(cmx270_nand_mtd, part_probes, + mtd_parts_nb = parse_mtd_partitions(cmx270_nand_mtd, NULL, &mtd_parts, 0); if (mtd_parts_nb > 0) part_type = "command line"; else mtd_parts_nb = 0; -#endif + if (!mtd_parts_nb) { mtd_parts = partition_info; mtd_parts_nb = NUM_PARTITIONS; -- cgit v0.10.2 From 5987d3f45a3819985eb8f34203a5ca2604f08c06 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:53 +0400 Subject: mtd: cs553x_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c index b354961..b2bdf72 100644 --- a/drivers/mtd/nand/cs553x_nand.c +++ b/drivers/mtd/nand/cs553x_nand.c @@ -278,8 +278,6 @@ static int is_geode(void) return 0; } -static const char *part_probes[] = { "cmdlinepart", NULL }; - static int __init cs553x_init(void) { int err = -ENXIO; @@ -318,9 +316,7 @@ static int __init cs553x_init(void) if (cs553x_mtd[i]) { /* If any devices registered, return success. Else the last error. */ - mtd_parts_nb = parse_mtd_partitions(cs553x_mtd[i], part_probes, &mtd_parts, 0); - if (mtd_parts_nb > 0) - printk(KERN_NOTICE "Using command line partition definition\n"); + mtd_parts_nb = parse_mtd_partitions(cs553x_mtd[i], NULL, &mtd_parts, 0); mtd_device_register(cs553x_mtd[i], mtd_parts, mtd_parts_nb); err = 0; -- cgit v0.10.2 From 4e243a04c39b009e42ff4a4682ed47b850997dc1 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:54 +0400 Subject: mtd: davinci_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index a4c82b4..0c582ed 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -753,14 +753,7 @@ syndrome_done: if (ret < 0) goto err_scan; - if (mtd_has_cmdlinepart()) { - static const char *probes[] __initconst = { - "cmdlinepart", NULL - }; - - mtd_parts_nb = parse_mtd_partitions(&info->mtd, probes, - &mtd_parts, 0); - } + mtd_parts_nb = parse_mtd_partitions(&info->mtd, NULL, &mtd_parts, 0); if (mtd_parts_nb <= 0) { mtd_parts = pdata->parts; -- cgit v0.10.2 From 495e2f41c38c99b2785cd3d99b24b080b20e8eb4 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:55 +0400 Subject: mtd: edb7312 don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/edb7312.c b/drivers/mtd/nand/edb7312.c index 8400d0f..2f9374b 100644 --- a/drivers/mtd/nand/edb7312.c +++ b/drivers/mtd/nand/edb7312.c @@ -98,8 +98,6 @@ static int ep7312_device_ready(struct mtd_info *mtd) return 1; } -const char *part_probes[] = { "cmdlinepart", NULL }; - /* * Main initialization routine */ @@ -158,7 +156,7 @@ static int __init ep7312_init(void) return -ENXIO; } ep7312_mtd->name = "edb7312-nand"; - mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, part_probes, &mtd_parts, 0); + mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, NULL, &mtd_parts, 0); if (mtd_parts_nb > 0) part_type = "command line"; else -- cgit v0.10.2 From a8e083246387ffb9a84551fa908a358cacdc2b0c Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:56 +0400 Subject: mtd: fsl_upm don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index 23752fd..7c782eb 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -158,7 +158,6 @@ static int __devinit fun_chip_init(struct fsl_upm_nand *fun, { int ret; struct device_node *flash_np; - static const char *part_types[] = { "cmdlinepart", NULL, }; fun->chip.IO_ADDR_R = fun->io_base; fun->chip.IO_ADDR_W = fun->io_base; @@ -192,7 +191,7 @@ static int __devinit fun_chip_init(struct fsl_upm_nand *fun, if (ret) goto err; - ret = parse_mtd_partitions(&fun->mtd, part_types, &fun->parts, 0); + ret = parse_mtd_partitions(&fun->mtd, NULL, &fun->parts, 0); #ifdef CONFIG_MTD_OF_PARTS if (ret == 0) { -- cgit v0.10.2 From 8d3f8bb8093080d4e2b1de096af444b694a16766 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:57 +0400 Subject: mtd: fsmc_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c index 8a5f1aa..a39c224 100644 --- a/drivers/mtd/nand/fsmc_nand.c +++ b/drivers/mtd/nand/fsmc_nand.c @@ -177,9 +177,6 @@ static struct mtd_partition partition_info_128KB_blk[] = { }, }; -#ifdef CONFIG_MTD_CMDLINE_PARTS -const char *part_probes[] = { "cmdlinepart", NULL }; -#endif /** * struct fsmc_nand_data - structure for FSMC NAND device state @@ -716,15 +713,13 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) * platform data, * default partition information present in driver. */ -#ifdef CONFIG_MTD_CMDLINE_PARTS /* - * Check if partition info passed via command line + * Check for partition info passed */ host->mtd.name = "nand"; - host->nr_partitions = parse_mtd_partitions(&host->mtd, part_probes, + host->nr_partitions = parse_mtd_partitions(&host->mtd, NULL, &host->partitions, 0); if (host->nr_partitions <= 0) { -#endif /* * Check if partition info passed via command line */ @@ -769,9 +764,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) } } } -#ifdef CONFIG_MTD_CMDLINE_PARTS } -#endif ret = mtd_device_register(&host->mtd, host->partitions, host->nr_partitions); -- cgit v0.10.2 From e411f52d591fff47a251a213e1f4115dfb356e8d Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:16:58 +0400 Subject: mtd: h1910 don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/h1910.c b/drivers/mtd/nand/h1910.c index 02a03e6..42f9177 100644 --- a/drivers/mtd/nand/h1910.c +++ b/drivers/mtd/nand/h1910.c @@ -136,14 +136,10 @@ static int __init h1910_init(void) iounmap((void *)nandaddr); return -ENXIO; } -#ifdef CONFIG_MTD_CMDLINE_PARTS - mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts, "h1910-nand"); + mtd_parts_nb = parse_mtd_partitions(h1910_nand_mtd, NULL, &mtd_parts, 0); if (mtd_parts_nb > 0) part_type = "command line"; - else - mtd_parts_nb = 0; -#endif - if (mtd_parts_nb == 0) { + else { mtd_parts = partition_info; mtd_parts_nb = NUM_PARTITIONS; part_type = "static"; -- cgit v0.10.2 From bef06150b2c0607edbee8e8c5fd7e882a90a976a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:00 +0400 Subject: mtd: jz4740_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/jz4740_nand.c b/drivers/mtd/nand/jz4740_nand.c index 6e813da..920719c 100644 --- a/drivers/mtd/nand/jz4740_nand.c +++ b/drivers/mtd/nand/jz4740_nand.c @@ -251,10 +251,6 @@ static int jz_nand_correct_ecc_rs(struct mtd_info *mtd, uint8_t *dat, return 0; } -#ifdef CONFIG_MTD_CMDLINE_PARTS -static const char *part_probes[] = {"cmdline", NULL}; -#endif - static int jz_nand_ioremap_resource(struct platform_device *pdev, const char *name, struct resource **res, void __iomem **base) { @@ -373,10 +369,7 @@ static int __devinit jz_nand_probe(struct platform_device *pdev) goto err_gpio_free; } -#ifdef CONFIG_MTD_CMDLINE_PARTS - num_partitions = parse_mtd_partitions(mtd, part_probes, - &partition_info, 0); -#endif + num_partitions = parse_mtd_partitions(mtd, NULL, &partition_info, 0); if (num_partitions <= 0 && pdata) { num_partitions = pdata->num_partitions; partition_info = pdata->partitions; -- cgit v0.10.2 From 0455dfd4c8614ae971202697f6db4d239e0b44c3 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:25:00 +0400 Subject: mtd: lantiq-flash don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Artem: tewaked the patch Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/lantiq-flash.c b/drivers/mtd/maps/lantiq-flash.c index a90cabd..57ea3fe 100644 --- a/drivers/mtd/maps/lantiq-flash.c +++ b/drivers/mtd/maps/lantiq-flash.c @@ -107,8 +107,6 @@ ltq_copy_to(struct map_info *map, unsigned long to, spin_unlock_irqrestore(&ebu_lock, flags); } -static const char const *part_probe_types[] = { "cmdlinepart", NULL }; - static int __init ltq_mtd_probe(struct platform_device *pdev) { @@ -172,8 +170,7 @@ ltq_mtd_probe(struct platform_device *pdev) cfi->addr_unlock1 ^= 1; cfi->addr_unlock2 ^= 1; - nr_parts = parse_mtd_partitions(ltq_mtd->mtd, - part_probe_types, &parts, 0); + nr_parts = parse_mtd_partitions(ltq_mtd->mtd, NULL, &parts, 0); if (nr_parts > 0) { dev_info(&pdev->dev, "using %d partitions from cmdline", nr_parts); -- cgit v0.10.2 From ac9b0f3662f523e6aeb7669b40269ecbd2fd752b Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:25:01 +0400 Subject: mtd: latch-addr-flash don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Artem: tweaked the patch Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/latch-addr-flash.c b/drivers/mtd/maps/latch-addr-flash.c index 5936c46..09cf704 100644 --- a/drivers/mtd/maps/latch-addr-flash.c +++ b/drivers/mtd/maps/latch-addr-flash.c @@ -97,8 +97,6 @@ static void lf_copy_from(struct map_info *map, void *to, static char *rom_probe_types[] = { "cfi_probe", NULL }; -static char *part_probe_types[] = { "cmdlinepart", NULL }; - static int latch_addr_flash_remove(struct platform_device *dev) { struct latch_addr_flash_info *info; @@ -206,8 +204,7 @@ static int __devinit latch_addr_flash_probe(struct platform_device *dev) } info->mtd->owner = THIS_MODULE; - err = parse_mtd_partitions(info->mtd, (const char **)part_probe_types, - &info->parts, 0); + err = parse_mtd_partitions(info->mtd, NULL, &info->parts, 0); if (err > 0) { mtd_device_register(info->mtd, info->parts, err); return 0; -- cgit v0.10.2 From 5279fe36fa4c5e3f33b25111c1cbf08386e78d06 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:01 +0400 Subject: mtd: mpc5121_nfc don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index 2f2c35a..30f78ea 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -131,8 +131,6 @@ struct mpc5121_nfc_prv { static void mpc5121_nfc_done(struct mtd_info *mtd); -static const char *mpc5121_nfc_pprobes[] = { "cmdlinepart", NULL }; - /* Read NFC register */ static inline u16 nfc_read(struct mtd_info *mtd, uint reg) { @@ -838,7 +836,7 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op) dev_set_drvdata(dev, mtd); /* Register device in MTD */ - retval = parse_mtd_partitions(mtd, mpc5121_nfc_pprobes, &parts, 0); + retval = parse_mtd_partitions(mtd, NULL, &parts, 0); #ifdef CONFIG_MTD_OF_PARTS if (retval == 0) retval = of_mtd_parse_partitions(dev, dn, &parts); -- cgit v0.10.2 From 2aedf3e982c1b0177710c87e2f199624d07abc8e Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:02 +0400 Subject: mtd: ndfc don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index ea2dea8..cb66fd7 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -159,11 +159,6 @@ static int ndfc_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) static int ndfc_chip_init(struct ndfc_controller *ndfc, struct device_node *node) { -#ifdef CONFIG_MTD_CMDLINE_PARTS - static const char *part_types[] = { "cmdlinepart", NULL }; -#else - static const char *part_types[] = { NULL }; -#endif struct device_node *flash_np; struct nand_chip *chip = &ndfc->chip; int ret; @@ -204,7 +199,7 @@ static int ndfc_chip_init(struct ndfc_controller *ndfc, if (ret) goto err; - ret = parse_mtd_partitions(&ndfc->mtd, part_types, &ndfc->parts, 0); + ret = parse_mtd_partitions(&ndfc->mtd, NULL, &ndfc->parts, 0); if (ret < 0) goto err; -- cgit v0.10.2 From f397d8c074c966f61b12c4c554e0aa32704056c7 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:03 +0400 Subject: mtd: omap2 don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 0db2c0e..8783c08 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -94,8 +94,6 @@ #define P4e_s(a) (TF(a & NAND_Ecc_P4e) << 0) #define P4o_s(a) (TF(a & NAND_Ecc_P4o) << 1) -static const char *part_probes[] = { "cmdlinepart", NULL }; - /* oob info generated runtime depending on ecc algorithm and layout selected */ static struct nand_ecclayout omap_oobinfo; /* Define some generic bad / good block scan pattern which are used @@ -1103,7 +1101,7 @@ static int __devinit omap_nand_probe(struct platform_device *pdev) goto out_release_mem_region; } - err = parse_mtd_partitions(&info->mtd, part_probes, &info->parts, 0); + err = parse_mtd_partitions(&info->mtd, NULL, &info->parts, 0); if (err > 0) mtd_device_register(&info->mtd, info->parts, err); else if (pdata->parts) -- cgit v0.10.2 From 4ac6b3ef7191c508a356c205b02ab82f5e228d0c Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:04 +0400 Subject: mtd: orion_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index 7794d06..5c55981 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -21,8 +21,6 @@ #include #include -static const char *part_probes[] = { "cmdlinepart", NULL }; - static void orion_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) { struct nand_chip *nc = mtd->priv; @@ -132,10 +130,8 @@ static int __init orion_nand_probe(struct platform_device *pdev) goto no_dev; } -#ifdef CONFIG_MTD_CMDLINE_PARTS mtd->name = "orion_nand"; - num_part = parse_mtd_partitions(mtd, part_probes, &partitions, 0); -#endif + num_part = parse_mtd_partitions(mtd, NULL, &partitions, 0); /* If cmdline partitions have been passed, let them be used */ if (num_part <= 0) { num_part = board->nr_parts; -- cgit v0.10.2 From 16b206e62f9b43ba864571a6808844aaddea7479 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:05 +0400 Subject: mtd: ppchameleonevb don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/ppchameleonevb.c b/drivers/mtd/nand/ppchameleonevb.c index 3bbb796..9376633 100644 --- a/drivers/mtd/nand/ppchameleonevb.c +++ b/drivers/mtd/nand/ppchameleonevb.c @@ -99,8 +99,6 @@ static struct mtd_partition partition_info_evb[] = { #define NUM_PARTITIONS 1 -extern int parse_cmdline_partitions(struct mtd_info *master, struct mtd_partition **pparts, const char *mtd_id); - /* * hardware specific access to control-lines */ @@ -187,9 +185,6 @@ static int ppchameleonevb_device_ready(struct mtd_info *minfo) } #endif -const char *part_probes[] = { "cmdlinepart", NULL }; -const char *part_probes_evb[] = { "cmdlinepart", NULL }; - /* * Main initialization routine */ @@ -281,7 +276,7 @@ static int __init ppchameleonevb_init(void) #endif ppchameleon_mtd->name = "ppchameleon-nand"; - mtd_parts_nb = parse_mtd_partitions(ppchameleon_mtd, part_probes, &mtd_parts, 0); + mtd_parts_nb = parse_mtd_partitions(ppchameleon_mtd, NULL, &mtd_parts, 0); if (mtd_parts_nb > 0) part_type = "command line"; else @@ -382,7 +377,7 @@ static int __init ppchameleonevb_init(void) } ppchameleonevb_mtd->name = NAND_EVB_MTD_NAME; - mtd_parts_nb = parse_mtd_partitions(ppchameleonevb_mtd, part_probes_evb, &mtd_parts, 0); + mtd_parts_nb = parse_mtd_partitions(ppchameleonevb_mtd, NULL, &mtd_parts, 0); if (mtd_parts_nb > 0) part_type = "command line"; else -- cgit v0.10.2 From c842f570a6e3ac002389ab7154084e32f4f5021a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:06 +0400 Subject: mtd: pxa3xx_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index e11f926..c7da3c8 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -1129,6 +1129,8 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) { struct pxa3xx_nand_platform_data *pdata; struct pxa3xx_nand_info *info; + struct mtd_partition *parts; + int nr_parts; pdata = pdev->dev.platform_data; if (!pdata) { @@ -1146,16 +1148,11 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) return -ENODEV; } - if (mtd_has_cmdlinepart()) { - const char *probes[] = { "cmdlinepart", NULL }; - struct mtd_partition *parts; - int nr_parts; - nr_parts = parse_mtd_partitions(info->mtd, probes, &parts, 0); + nr_parts = parse_mtd_partitions(info->mtd, NULL, &parts, 0); - if (nr_parts) - return mtd_device_register(info->mtd, parts, nr_parts); - } + if (nr_parts) + return mtd_device_register(info->mtd, parts, nr_parts); return mtd_device_register(info->mtd, pdata->parts, pdata->nr_parts); } -- cgit v0.10.2 From 5b2efbdf70c74dcab575103c547ae27a71daba4c Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:07 +0400 Subject: mtd: s3c2410 don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index ec28079..17954ba 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -744,7 +744,6 @@ static int s3c24xx_nand_remove(struct platform_device *pdev) return 0; } -const char *part_probes[] = { "cmdlinepart", NULL }; static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info, struct s3c2410_nand_mtd *mtd, struct s3c2410_nand_set *set) @@ -756,7 +755,7 @@ static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info, return mtd_device_register(&mtd->mtd, NULL, 0); mtd->mtd.name = set->name; - nr_part = parse_mtd_partitions(&mtd->mtd, part_probes, &part_info, 0); + nr_part = parse_mtd_partitions(&mtd->mtd, NULL, &part_info, 0); if (nr_part <= 0 && set->nr_partitions > 0) { nr_part = set->nr_partitions; -- cgit v0.10.2 From a4c93614fded8ef0be90fca6a619d3c9c3e9552f Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:08 +0400 Subject: mtd: sharpsl don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c index 19e24ed..b3377f8 100644 --- a/drivers/mtd/nand/sharpsl.c +++ b/drivers/mtd/nand/sharpsl.c @@ -103,8 +103,6 @@ static int sharpsl_nand_calculate_ecc(struct mtd_info *mtd, const u_char * dat, return readb(sharpsl->io + ECCCNTR) != 0; } -static const char *part_probes[] = { "cmdlinepart", NULL }; - /* * Main initialization routine */ @@ -184,7 +182,7 @@ static int __devinit sharpsl_nand_probe(struct platform_device *pdev) /* Register the partitions */ sharpsl->mtd.name = "sharpsl-nand"; - nr_partitions = parse_mtd_partitions(&sharpsl->mtd, part_probes, &sharpsl_partition_info, 0); + nr_partitions = parse_mtd_partitions(&sharpsl->mtd, NULL, &sharpsl_partition_info, 0); if (nr_partitions <= 0) { nr_partitions = data->nr_partitions; sharpsl_partition_info = data->partitions; -- cgit v0.10.2 From 7221eb1296b3ebb0038dabeb88fe17a4fc62e920 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:09 +0400 Subject: mtd: socrates_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Artem: tweaked the patch Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/socrates_nand.c b/drivers/mtd/nand/socrates_nand.c index ca2d055..9023ac8 100644 --- a/drivers/mtd/nand/socrates_nand.c +++ b/drivers/mtd/nand/socrates_nand.c @@ -155,8 +155,6 @@ static int socrates_nand_device_ready(struct mtd_info *mtd) return 1; } -static const char *part_probes[] = { "cmdlinepart", NULL }; - /* * Probe for the NAND device. */ @@ -225,14 +223,11 @@ static int __devinit socrates_nand_probe(struct platform_device *ofdev) goto out; } -#ifdef CONFIG_MTD_CMDLINE_PARTS - num_partitions = parse_mtd_partitions(mtd, part_probes, - &partitions, 0); + num_partitions = parse_mtd_partitions(mtd, NULL, &partitions, 0); if (num_partitions < 0) { res = num_partitions; goto release; } -#endif if (num_partitions == 0) { num_partitions = of_mtd_parse_partitions(&ofdev->dev, -- cgit v0.10.2 From d845c3eebc1efea59c74a63c028f36051a4d0d8f Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:10 +0400 Subject: mtd: tmio_nand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c index 11e8371..b6ffad6 100644 --- a/drivers/mtd/nand/tmio_nand.c +++ b/drivers/mtd/nand/tmio_nand.c @@ -121,9 +121,6 @@ struct tmio_nand { #define mtd_to_tmio(m) container_of(m, struct tmio_nand, mtd) -#ifdef CONFIG_MTD_CMDLINE_PARTS -static const char *part_probes[] = { "cmdlinepart", NULL }; -#endif /*--------------------------------------------------------------------------*/ @@ -461,9 +458,7 @@ static int tmio_probe(struct platform_device *dev) goto err_scan; } /* Register the partitions */ -#ifdef CONFIG_MTD_CMDLINE_PARTS - nbparts = parse_mtd_partitions(mtd, part_probes, &parts, 0); -#endif + nbparts = parse_mtd_partitions(mtd, NULL, &parts, 0); if (nbparts <= 0 && data) { parts = data->partition; nbparts = data->num_partitions; -- cgit v0.10.2 From abfc7d2b94e650c18965e62fe74e457b96b4865a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:11 +0400 Subject: mtd: txx9ndfmc don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/txx9ndfmc.c b/drivers/mtd/nand/txx9ndfmc.c index bfba4e3..91b05b9 100644 --- a/drivers/mtd/nand/txx9ndfmc.c +++ b/drivers/mtd/nand/txx9ndfmc.c @@ -287,7 +287,6 @@ static int txx9ndfmc_nand_scan(struct mtd_info *mtd) static int __init txx9ndfmc_probe(struct platform_device *dev) { struct txx9ndfmc_platform_data *plat = dev->dev.platform_data; - static const char *probes[] = { "cmdlinepart", NULL }; int hold, spw; int i; struct txx9ndfmc_drvdata *drvdata; @@ -393,7 +392,7 @@ static int __init txx9ndfmc_probe(struct platform_device *dev) } mtd->name = txx9_priv->mtdname; - nr_parts = parse_mtd_partitions(mtd, probes, + nr_parts = parse_mtd_partitions(mtd, NULL, &drvdata->parts[i], 0); mtd_device_register(mtd, drvdata->parts[i], nr_parts); drvdata->mtds[i] = mtd; -- cgit v0.10.2 From 3d4ae3b2eab1d95a944162b047533d74cfcb8def Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:12 +0400 Subject: mtd: onenand/generic don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c index 2d70d35..bca1c49 100644 --- a/drivers/mtd/onenand/generic.c +++ b/drivers/mtd/onenand/generic.c @@ -30,8 +30,6 @@ */ #define DRIVER_NAME "onenand-flash" -static const char *part_probes[] = { "cmdlinepart", NULL, }; - struct onenand_info { struct mtd_info mtd; struct mtd_partition *parts; @@ -73,7 +71,7 @@ static int __devinit generic_onenand_probe(struct platform_device *pdev) goto out_iounmap; } - err = parse_mtd_partitions(&info->mtd, part_probes, &info->parts, 0); + err = parse_mtd_partitions(&info->mtd, NULL, &info->parts, 0); if (err > 0) mtd_device_register(&info->mtd, info->parts, err); else if (err <= 0 && pdata && pdata->parts) -- cgit v0.10.2 From 70f438c61636a194d7c3fa341fa72353ba0090f6 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:13 +0400 Subject: mtd: onenand/omap2 don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c index 0d9073d..5ca2053 100644 --- a/drivers/mtd/onenand/omap2.c +++ b/drivers/mtd/onenand/omap2.c @@ -67,8 +67,6 @@ struct omap2_onenand { struct regulator *regulator; }; -static const char *part_probes[] = { "cmdlinepart", NULL, }; - static void omap2_onenand_dma_cb(int lch, u16 ch_status, void *data) { struct omap2_onenand *c = data; @@ -754,7 +752,7 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev) if ((r = onenand_scan(&c->mtd, 1)) < 0) goto err_release_regulator; - r = parse_mtd_partitions(&c->mtd, part_probes, &c->parts, 0); + r = parse_mtd_partitions(&c->mtd, NULL, &c->parts, 0); if (r > 0) r = mtd_device_register(&c->mtd, c->parts, r); else if (pdata->parts != NULL) -- cgit v0.10.2 From 18f8eb1b23619736872740f8c4697b6534a0524b Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 20:17:14 +0400 Subject: mtd: samsung/onenand don't specify default parsing options Since 'cmdline, NULL' is now a default for parse_mtd_partitions, don't specify this in every driver, instead pass NULL to force parse_mtd_partitions to use default. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c index 3306b5b..78a08ea 100644 --- a/drivers/mtd/onenand/samsung.c +++ b/drivers/mtd/onenand/samsung.c @@ -157,8 +157,6 @@ struct s3c_onenand { static struct s3c_onenand *onenand; -static const char *part_probes[] = { "cmdlinepart", NULL, }; - static inline int s3c_read_reg(int offset) { return readl(onenand->base + offset); @@ -1017,7 +1015,7 @@ static int s3c_onenand_probe(struct platform_device *pdev) if (s3c_read_reg(MEM_CFG_OFFSET) & ONENAND_SYS_CFG1_SYNC_READ) dev_info(&onenand->pdev->dev, "OneNAND Sync. Burst Read enabled\n"); - err = parse_mtd_partitions(mtd, part_probes, &onenand->parts, 0); + err = parse_mtd_partitions(mtd, NULL, &onenand->parts, 0); if (err > 0) mtd_device_register(mtd, onenand->parts, err); else if (err <= 0 && pdata && pdata->parts) -- cgit v0.10.2 From 8b6e50c9eba8bf44b2dfd931d359706a461d2cfd Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 25 May 2011 14:59:01 -0700 Subject: mtd: nand: multi-line comment style fixups Artem: while on it, do other commentaries clean-ups: 1. Start one-line comments with capital letter and no dot at the end 2. Turn sparse multi-line comments into one-line comments 3. Change "phrase ?" to "phrase?" and the same with "!". 4. Remove tabs from the kerneldoc parameters comments - they are mixed with tabs often, and inconsistent. 5. Put dot at the end of descriptions in kerneldoc comments. 6. Some other small commentaries clean-ups Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 1380bf6..1525cd0 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -136,9 +136,9 @@ static int check_offs_len(struct mtd_info *mtd, /** * nand_release_device - [GENERIC] release chip - * @mtd: MTD device structure + * @mtd: MTD device structure * - * Deselect, release chip lock and wake up anyone waiting on the device + * Deselect, release chip lock and wake up anyone waiting on the device. */ static void nand_release_device(struct mtd_info *mtd) { @@ -157,9 +157,9 @@ static void nand_release_device(struct mtd_info *mtd) /** * nand_read_byte - [DEFAULT] read one byte from the chip - * @mtd: MTD device structure + * @mtd: MTD device structure * - * Default read function for 8bit buswith + * Default read function for 8bit buswith. */ static uint8_t nand_read_byte(struct mtd_info *mtd) { @@ -169,10 +169,9 @@ static uint8_t nand_read_byte(struct mtd_info *mtd) /** * nand_read_byte16 - [DEFAULT] read one byte endianess aware from the chip - * @mtd: MTD device structure + * @mtd: MTD device structure * - * Default read function for 16bit buswith with - * endianess conversion + * Default read function for 16bit buswith with endianess conversion. */ static uint8_t nand_read_byte16(struct mtd_info *mtd) { @@ -182,10 +181,9 @@ static uint8_t nand_read_byte16(struct mtd_info *mtd) /** * nand_read_word - [DEFAULT] read one word from the chip - * @mtd: MTD device structure + * @mtd: MTD device structure * - * Default read function for 16bit buswith without - * endianess conversion + * Default read function for 16bit buswith without endianess conversion. */ static u16 nand_read_word(struct mtd_info *mtd) { @@ -195,8 +193,8 @@ static u16 nand_read_word(struct mtd_info *mtd) /** * nand_select_chip - [DEFAULT] control CE line - * @mtd: MTD device structure - * @chipnr: chipnumber to select, -1 for deselect + * @mtd: MTD device structure + * @chipnr: chipnumber to select, -1 for deselect * * Default select function for 1 chip devices. */ @@ -218,11 +216,11 @@ static void nand_select_chip(struct mtd_info *mtd, int chipnr) /** * nand_write_buf - [DEFAULT] write buffer to chip - * @mtd: MTD device structure - * @buf: data buffer - * @len: number of bytes to write + * @mtd: MTD device structure + * @buf: data buffer + * @len: number of bytes to write * - * Default write function for 8bit buswith + * Default write function for 8bit buswith. */ static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -235,11 +233,11 @@ static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) /** * nand_read_buf - [DEFAULT] read chip data into buffer - * @mtd: MTD device structure - * @buf: buffer to store date - * @len: number of bytes to read + * @mtd: MTD device structure + * @buf: buffer to store date + * @len: number of bytes to read * - * Default read function for 8bit buswith + * Default read function for 8bit buswith. */ static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) { @@ -252,11 +250,11 @@ static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) /** * nand_verify_buf - [DEFAULT] Verify chip data against buffer - * @mtd: MTD device structure - * @buf: buffer containing the data to compare - * @len: number of bytes to compare + * @mtd: MTD device structure + * @buf: buffer containing the data to compare + * @len: number of bytes to compare * - * Default verify function for 8bit buswith + * Default verify function for 8bit buswith. */ static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -271,11 +269,11 @@ static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) /** * nand_write_buf16 - [DEFAULT] write buffer to chip - * @mtd: MTD device structure - * @buf: data buffer - * @len: number of bytes to write + * @mtd: MTD device structure + * @buf: data buffer + * @len: number of bytes to write * - * Default write function for 16bit buswith + * Default write function for 16bit buswith. */ static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -291,11 +289,11 @@ static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) /** * nand_read_buf16 - [DEFAULT] read chip data into buffer - * @mtd: MTD device structure - * @buf: buffer to store date - * @len: number of bytes to read + * @mtd: MTD device structure + * @buf: buffer to store date + * @len: number of bytes to read * - * Default read function for 16bit buswith + * Default read function for 16bit buswith. */ static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len) { @@ -310,11 +308,11 @@ static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len) /** * nand_verify_buf16 - [DEFAULT] Verify chip data against buffer - * @mtd: MTD device structure - * @buf: buffer containing the data to compare - * @len: number of bytes to compare + * @mtd: MTD device structure + * @buf: buffer containing the data to compare + * @len: number of bytes to compare * - * Default verify function for 16bit buswith + * Default verify function for 16bit buswith. */ static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -332,9 +330,9 @@ static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) /** * nand_block_bad - [DEFAULT] Read bad block marker from the chip - * @mtd: MTD device structure - * @ofs: offset from device start - * @getchip: 0, if the chip is already selected + * @mtd: MTD device structure + * @ofs: offset from device start + * @getchip: 0, if the chip is already selected * * Check, if the block is bad. */ @@ -384,11 +382,11 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) /** * nand_default_block_markbad - [DEFAULT] mark a block bad - * @mtd: MTD device structure - * @ofs: offset from device start + * @mtd: MTD device structure + * @ofs: offset from device start * - * This is the default implementation, which can be overridden by - * a hardware specific driver. + * This is the default implementation, which can be overridden by a hardware + * specific driver. */ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) { @@ -404,7 +402,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) if (chip->bbt) chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); - /* Do we have a flash based bad block table ? */ + /* Do we have a flash based bad block table? */ if (chip->bbt_options & NAND_BBT_USE_FLASH) ret = nand_update_bbt(mtd, ofs); else { @@ -439,16 +437,16 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) /** * nand_check_wp - [GENERIC] check if the chip is write protected - * @mtd: MTD device structure - * Check, if the device is write protected + * @mtd: MTD device structure * - * The function expects, that the device is already selected + * Check, if the device is write protected. The function expects, that the + * device is already selected. */ static int nand_check_wp(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; - /* broken xD cards report WP despite being writable */ + /* Broken xD cards report WP despite being writable */ if (chip->options & NAND_BROKEN_XD) return 0; @@ -459,10 +457,10 @@ static int nand_check_wp(struct mtd_info *mtd) /** * nand_block_checkbad - [GENERIC] Check if a block is marked bad - * @mtd: MTD device structure - * @ofs: offset from device start - * @getchip: 0, if the chip is already selected - * @allowbbt: 1, if its allowed to access the bbt area + * @mtd: MTD device structure + * @ofs: offset from device start + * @getchip: 0, if the chip is already selected + * @allowbbt: 1, if its allowed to access the bbt area * * Check, if the block is bad. Either by reading the bad block table or * calling of the scan function. @@ -481,8 +479,8 @@ static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip, /** * panic_nand_wait_ready - [GENERIC] Wait for the ready pin after commands. - * @mtd: MTD device structure - * @timeo: Timeout + * @mtd: MTD device structure + * @timeo: Timeout * * Helper function for nand_wait_ready used when needing to wait in interrupt * context. @@ -501,10 +499,7 @@ static void panic_nand_wait_ready(struct mtd_info *mtd, unsigned long timeo) } } -/* - * Wait for the ready pin, after a command - * The timeout is catched later. - */ +/* Wait for the ready pin, after a command. The timeout is catched later */ void nand_wait_ready(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; @@ -515,7 +510,7 @@ void nand_wait_ready(struct mtd_info *mtd) return panic_nand_wait_ready(mtd, 400); led_trigger_event(nand_led_trigger, LED_FULL); - /* wait until command is processed or timeout occures */ + /* Wait until command is processed or timeout occures */ do { if (chip->dev_ready(mtd)) break; @@ -527,13 +522,13 @@ EXPORT_SYMBOL_GPL(nand_wait_ready); /** * nand_command - [DEFAULT] Send command to NAND device - * @mtd: MTD device structure - * @command: the command to be sent - * @column: the column address for this command, -1 if none - * @page_addr: the page address for this command, -1 if none + * @mtd: MTD device structure + * @command: the command to be sent + * @column: the column address for this command, -1 if none + * @page_addr: the page address for this command, -1 if none * - * Send command to NAND device. This function is used for small page - * devices (256/512 Bytes per page) + * Send command to NAND device. This function is used for small page devices + * (256/512 Bytes per page). */ static void nand_command(struct mtd_info *mtd, unsigned int command, int column, int page_addr) @@ -541,9 +536,7 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, register struct nand_chip *chip = mtd->priv; int ctrl = NAND_CTRL_CLE | NAND_CTRL_CHANGE; - /* - * Write out the command to the device. - */ + /* Write out the command to the device */ if (command == NAND_CMD_SEQIN) { int readcmd; @@ -563,9 +556,7 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, } chip->cmd_ctrl(mtd, command, ctrl); - /* - * Address cycle, when necessary - */ + /* Address cycle, when necessary */ ctrl = NAND_CTRL_ALE | NAND_CTRL_CHANGE; /* Serially input address */ if (column != -1) { @@ -586,8 +577,8 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); /* - * program and erase have their own busy handlers - * status and sequential in needs no delay + * Program and erase have their own busy handlers status and sequential + * in needs no delay */ switch (command) { @@ -621,8 +612,10 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, return; } } - /* Apply this short delay always to ensure that we do wait tWB in - * any case on any machine. */ + /* + * Apply this short delay always to ensure that we do wait tWB in + * any case on any machine. + */ ndelay(100); nand_wait_ready(mtd); @@ -630,10 +623,10 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, /** * nand_command_lp - [DEFAULT] Send command to NAND large page device - * @mtd: MTD device structure - * @command: the command to be sent - * @column: the column address for this command, -1 if none - * @page_addr: the page address for this command, -1 if none + * @mtd: MTD device structure + * @command: the command to be sent + * @column: the column address for this command, -1 if none + * @page_addr: the page address for this command, -1 if none * * Send command to NAND device. This is the version for the new large page * devices We dont have the separate regions as we have in the small page @@ -679,8 +672,8 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); /* - * program and erase have their own busy handlers - * status, sequential in, and deplete1 need no delay + * Program and erase have their own busy handlers status, sequential + * in, and deplete1 need no delay. */ switch (command) { @@ -694,14 +687,12 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, case NAND_CMD_DEPLETE1: return; - /* - * read error status commands require only a short delay - */ case NAND_CMD_STATUS_ERROR: case NAND_CMD_STATUS_ERROR0: case NAND_CMD_STATUS_ERROR1: case NAND_CMD_STATUS_ERROR2: case NAND_CMD_STATUS_ERROR3: + /* Read error status commands require only a short delay */ udelay(chip->chip_delay); return; @@ -735,7 +726,7 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, default: /* * If we don't have access to the busy pin, we apply the given - * command delay + * command delay. */ if (!chip->dev_ready) { udelay(chip->chip_delay); @@ -743,8 +734,10 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, } } - /* Apply this short delay always to ensure that we do wait tWB in - * any case on any machine. */ + /* + * Apply this short delay always to ensure that we do wait tWB in + * any case on any machine. + */ ndelay(100); nand_wait_ready(mtd); @@ -752,9 +745,9 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, /** * panic_nand_get_device - [GENERIC] Get chip for selected access - * @chip: the nand chip descriptor - * @mtd: MTD device structure - * @new_state: the state which is requested + * @chip: the nand chip descriptor + * @mtd: MTD device structure + * @new_state: the state which is requested * * Used when in panic, no locks are taken. */ @@ -768,9 +761,9 @@ static void panic_nand_get_device(struct nand_chip *chip, /** * nand_get_device - [GENERIC] Get chip for selected access - * @chip: the nand chip descriptor - * @mtd: MTD device structure - * @new_state: the state which is requested + * @chip: the nand chip descriptor + * @mtd: MTD device structure + * @new_state: the state which is requested * * Get the device and lock it for exclusive access */ @@ -808,10 +801,10 @@ retry: } /** - * panic_nand_wait - [GENERIC] wait until the command is done - * @mtd: MTD device structure - * @chip: NAND chip structure - * @timeo: Timeout + * panic_nand_wait - [GENERIC] wait until the command is done + * @mtd: MTD device structure + * @chip: NAND chip structure + * @timeo: timeout * * Wait for command done. This is a helper function for nand_wait used when * we are in interrupt context. May happen when in panic and trying to write @@ -834,13 +827,13 @@ static void panic_nand_wait(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_wait - [DEFAULT] wait until the command is done - * @mtd: MTD device structure - * @chip: NAND chip structure + * nand_wait - [DEFAULT] wait until the command is done + * @mtd: MTD device structure + * @chip: NAND chip structure * - * Wait for command done. This applies to erase and program only - * Erase can take up to 400ms and program up to 20ms according to - * general NAND and SmartMedia specs + * Wait for command done. This applies to erase and program only. Erase can + * take up to 400ms and program up to 20ms according to general NAND and + * SmartMedia specs. */ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip) { @@ -855,8 +848,10 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip) led_trigger_event(nand_led_trigger, LED_FULL); - /* Apply this short delay always to ensure that we do wait tWB in - * any case on any machine. */ + /* + * Apply this short delay always to ensure that we do wait tWB in any + * case on any machine. + */ ndelay(100); if ((state == FL_ERASING) && (chip->options & NAND_IS_AND)) @@ -886,16 +881,15 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip) /** * __nand_unlock - [REPLACEABLE] unlocks specified locked blocks - * * @mtd: mtd info * @ofs: offset to start unlock from * @len: length to unlock - * @invert: when = 0, unlock the range of blocks within the lower and - * upper boundary address - * when = 1, unlock the range of blocks outside the boundaries - * of the lower and upper boundary address + * @invert: when = 0, unlock the range of blocks within the lower and + * upper boundary address + * when = 1, unlock the range of blocks outside the boundaries + * of the lower and upper boundary address * - * return - unlock status + * Returs unlock status. */ static int __nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len, int invert) @@ -927,12 +921,11 @@ static int __nand_unlock(struct mtd_info *mtd, loff_t ofs, /** * nand_unlock - [REPLACEABLE] unlocks specified locked blocks - * * @mtd: mtd info * @ofs: offset to start unlock from * @len: length to unlock * - * return - unlock status + * Returns unlock status. */ int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) { @@ -976,18 +969,16 @@ EXPORT_SYMBOL(nand_unlock); /** * nand_lock - [REPLACEABLE] locks all blocks present in the device - * * @mtd: mtd info * @ofs: offset to start unlock from * @len: length to unlock * - * return - lock status - * - * This feature is not supported in many NAND parts. 'Micron' NAND parts - * do have this feature, but it allows only to lock all blocks, not for - * specified range for block. + * This feature is not supported in many NAND parts. 'Micron' NAND parts do + * have this feature, but it allows only to lock all blocks, not for specified + * range for block. Implementing 'lock' feature by making use of 'unlock', for + * now. * - * Implementing 'lock' feature by making use of 'unlock', for now. + * Returns lock status. */ int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) { @@ -1042,12 +1033,13 @@ EXPORT_SYMBOL(nand_lock); /** * nand_read_page_raw - [Intern] read raw page data without ecc - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @page: page number to read * - * Not for syndrome calculating ecc controllers, which use a special oob layout + * Not for syndrome calculating ecc controllers, which use a special oob + * layout. */ static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int page) @@ -1059,10 +1051,10 @@ static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_read_page_raw_syndrome - [Intern] read raw page data without ecc - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @page: page number to read * * We need a special oob layout and handling even when OOB isn't used. */ @@ -1102,10 +1094,10 @@ static int nand_read_page_raw_syndrome(struct mtd_info *mtd, /** * nand_read_page_swecc - [REPLACABLE] software ecc based page read function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @page: page number to read */ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int page) @@ -1143,11 +1135,11 @@ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_read_subpage - [REPLACABLE] software ecc based sub-page read function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @data_offs: offset of requested data within the page - * @readlen: data length - * @bufpoi: buffer to store read data + * @mtd: mtd info structure + * @chip: nand chip info structure + * @data_offs: offset of requested data within the page + * @readlen: data length + * @bufpoi: buffer to store read data */ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint32_t data_offs, uint32_t readlen, uint8_t *bufpoi) @@ -1160,12 +1152,12 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, int busw = (chip->options & NAND_BUSWIDTH_16) ? 2 : 1; int index = 0; - /* Column address wihin the page aligned to ECC size (256bytes). */ + /* Column address wihin the page aligned to ECC size (256bytes) */ start_step = data_offs / chip->ecc.size; end_step = (data_offs + readlen - 1) / chip->ecc.size; num_steps = end_step - start_step + 1; - /* Data size aligned to ECC ecc.size*/ + /* Data size aligned to ECC ecc.size */ datafrag_len = num_steps * chip->ecc.size; eccfrag_len = num_steps * chip->ecc.bytes; @@ -1177,13 +1169,14 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, p = bufpoi + data_col_addr; chip->read_buf(mtd, p, datafrag_len); - /* Calculate ECC */ + /* Calculate ECC */ for (i = 0; i < eccfrag_len ; i += chip->ecc.bytes, p += chip->ecc.size) chip->ecc.calculate(mtd, p, &chip->buffers->ecccalc[i]); - /* The performance is faster if to position offsets - according to ecc.pos. Let make sure here that - there are no gaps in ecc positions */ + /* + * The performance is faster if we position offsets according to + * ecc.pos. Let's make sure that there are no gaps in ecc positions. + */ for (i = 0; i < eccfrag_len - 1; i++) { if (eccpos[i + start_step * chip->ecc.bytes] + 1 != eccpos[i + start_step * chip->ecc.bytes + 1]) { @@ -1195,8 +1188,10 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1); chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); } else { - /* send the command to read the particular ecc bytes */ - /* take care about buswidth alignment in read_buf */ + /* + * Send the command to read the particular ecc bytes take care + * about buswidth alignment in read_buf. + */ index = start_step * chip->ecc.bytes; aligned_pos = eccpos[index] & ~(busw - 1); @@ -1230,12 +1225,13 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_read_page_hwecc - [REPLACABLE] hardware ecc based page read function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @page: page number to read * - * Not for syndrome calculating ecc controllers which need a special oob layout + * Not for syndrome calculating ecc controllers which need a special oob + * layout. */ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int page) @@ -1275,17 +1271,16 @@ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_read_page_hwecc_oob_first - [REPLACABLE] hw ecc, read oob first - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @page: page number to read * - * Hardware ECC for large page chips, require OOB to be read first. - * For this ECC mode, the write_page method is re-used from ECC_HW. - * These methods read/write ECC from the OOB area, unlike the - * ECC_HW_SYNDROME support with multiple ECC steps, follows the - * "infix ECC" scheme and reads/writes ECC from the data area, by - * overwriting the NAND manufacturer bad block markings. + * Hardware ECC for large page chips, require OOB to be read first. For this + * ECC mode, the write_page method is re-used from ECC_HW. These methods + * read/write ECC from the OOB area, unlike the ECC_HW_SYNDROME support with + * multiple ECC steps, follows the "infix ECC" scheme and reads/writes ECC from + * the data area, by overwriting the NAND manufacturer bad block markings. */ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int page) @@ -1324,13 +1319,13 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd, /** * nand_read_page_syndrome - [REPLACABLE] hardware ecc syndrom based page read - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: buffer to store read data - * @page: page number to read + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: buffer to store read data + * @page: page number to read * - * The hw generator calculates the error syndrome automatically. Therefor - * we need a special oob layout and handling. + * The hw generator calculates the error syndrome automatically. Therefore we + * need a special oob layout and handling. */ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int page) @@ -1379,10 +1374,10 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_transfer_oob - [Internal] Transfer oob to client buffer - * @chip: nand chip structure - * @oob: oob destination address - * @ops: oob ops structure - * @len: size of oob to transfer + * @chip: nand chip structure + * @oob: oob destination address + * @ops: oob ops structure + * @len: size of oob to transfer */ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, struct mtd_oob_ops *ops, size_t len) @@ -1400,7 +1395,7 @@ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, size_t bytes = 0; for (; free->length && len; free++, len -= bytes) { - /* Read request not from offset 0 ? */ + /* Read request not from offset 0? */ if (unlikely(roffs)) { if (roffs >= free->length) { roffs -= free->length; @@ -1427,10 +1422,9 @@ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, /** * nand_do_read_ops - [Internal] Read data with ECC - * - * @mtd: MTD device structure - * @from: offset to read from - * @ops: oob ops structure + * @mtd: MTD device structure + * @from: offset to read from + * @ops: oob ops structure * * Internal function. Called with chip held. */ @@ -1467,7 +1461,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, bytes = min(mtd->writesize - col, readlen); aligned = (bytes == mtd->writesize); - /* Is the current page in the buffer ? */ + /* Is the current page in the buffer? */ if (realpage != chip->pagebuf || oob) { bufpoi = aligned ? buf : chip->buffers->databuf; @@ -1533,7 +1527,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, if (!readlen) break; - /* For subsequent reads align to page boundary. */ + /* For subsequent reads align to page boundary */ col = 0; /* Increment page address */ realpage++; @@ -1546,8 +1540,9 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, chip->select_chip(mtd, chipnr); } - /* Check, if the chip supports auto page increment - * or if we have hit a block boundary. + /* + * Check, if the chip supports auto page increment or if we + * have hit a block boundary. */ if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck)) sndcmd = 1; @@ -1568,13 +1563,13 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, /** * nand_read - [MTD Interface] MTD compatibility function for nand_do_read_ecc - * @mtd: MTD device structure - * @from: offset to read from - * @len: number of bytes to read - * @retlen: pointer to variable to store the number of read bytes - * @buf: the databuffer to put data + * @mtd: MTD device structure + * @from: offset to read from + * @len: number of bytes to read + * @retlen: pointer to variable to store the number of read bytes + * @buf: the databuffer to put data * - * Get hold of the chip and call nand_do_read + * Get hold of the chip and call nand_do_read. */ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, uint8_t *buf) @@ -1605,10 +1600,10 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, /** * nand_read_oob_std - [REPLACABLE] the most common OOB data read function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @page: page number to read - * @sndcmd: flag whether to issue read command or not + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to read + * @sndcmd: flag whether to issue read command or not */ static int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip, int page, int sndcmd) @@ -1624,10 +1619,10 @@ static int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_read_oob_syndrome - [REPLACABLE] OOB data read function for HW ECC * with syndromes - * @mtd: mtd info structure - * @chip: nand chip info structure - * @page: page number to read - * @sndcmd: flag whether to issue read command or not + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to read + * @sndcmd: flag whether to issue read command or not */ static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, int page, int sndcmd) @@ -1662,9 +1657,9 @@ static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_write_oob_std - [REPLACABLE] the most common OOB data write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @page: page number to write + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to write */ static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip, int page) @@ -1685,10 +1680,10 @@ static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_write_oob_syndrome - [REPLACABLE] OOB data write function for HW ECC - * with syndrome - only for large page flash ! - * @mtd: mtd info structure - * @chip: nand chip info structure - * @page: page number to write + * with syndrome - only for large page flash + * @mtd: mtd info structure + * @chip: nand chip info structure + * @page: page number to write */ static int nand_write_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, int page) @@ -1744,11 +1739,11 @@ static int nand_write_oob_syndrome(struct mtd_info *mtd, /** * nand_do_read_oob - [Intern] NAND read out-of-band - * @mtd: MTD device structure - * @from: offset to read from - * @ops: oob operations description structure + * @mtd: MTD device structure + * @from: offset to read from + * @ops: oob operations description structure * - * NAND read out-of-band data from the spare area + * NAND read out-of-band data from the spare area. */ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) @@ -1824,8 +1819,9 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, chip->select_chip(mtd, chipnr); } - /* Check, if the chip supports auto page increment - * or if we have hit a block boundary. + /* + * Check, if the chip supports auto page increment or if we + * have hit a block boundary. */ if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck)) sndcmd = 1; @@ -1837,11 +1833,11 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, /** * nand_read_oob - [MTD Interface] NAND read data and/or out-of-band - * @mtd: MTD device structure - * @from: offset to read from - * @ops: oob operation description structure + * @mtd: MTD device structure + * @from: offset to read from + * @ops: oob operation description structure * - * NAND read data and/or out-of-band data + * NAND read data and/or out-of-band data. */ static int nand_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) @@ -1883,11 +1879,12 @@ out: /** * nand_write_page_raw - [Intern] raw page write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer * - * Not for syndrome calculating ecc controllers, which use a special oob layout + * Not for syndrome calculating ecc controllers, which use a special oob + * layout. */ static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf) @@ -1898,9 +1895,9 @@ static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_write_page_raw_syndrome - [Intern] raw page write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer * * We need a special oob layout and handling even when ECC isn't checked. */ @@ -1937,9 +1934,9 @@ static void nand_write_page_raw_syndrome(struct mtd_info *mtd, } /** * nand_write_page_swecc - [REPLACABLE] software ecc based page write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer */ static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf) @@ -1963,9 +1960,9 @@ static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_write_page_hwecc - [REPLACABLE] hardware ecc based page write function - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer */ static void nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf) @@ -1991,12 +1988,12 @@ static void nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_write_page_syndrome - [REPLACABLE] hardware ecc syndrom based page write - * @mtd: mtd info structure - * @chip: nand chip info structure - * @buf: data buffer + * @mtd: mtd info structure + * @chip: nand chip info structure + * @buf: data buffer * - * The hw generator calculates the error syndrome automatically. Therefor - * we need a special oob layout and handling. + * The hw generator calculates the error syndrome automatically. Therefore we + * need a special oob layout and handling. */ static void nand_write_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf) @@ -2035,12 +2032,12 @@ static void nand_write_page_syndrome(struct mtd_info *mtd, /** * nand_write_page - [REPLACEABLE] write one page - * @mtd: MTD device structure - * @chip: NAND chip descriptor - * @buf: the data to write - * @page: page number to write - * @cached: cached programming - * @raw: use _raw version of write_page + * @mtd: MTD device structure + * @chip: NAND chip descriptor + * @buf: the data to write + * @page: page number to write + * @cached: cached programming + * @raw: use _raw version of write_page */ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf, int page, int cached, int raw) @@ -2056,7 +2053,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, /* * Cached progamming disabled for now, Not sure if its worth the - * trouble. The speed gain is not very impressive. (2.3->2.6Mib/s) + * trouble. The speed gain is not very impressive. (2.3->2.6Mib/s). */ cached = 0; @@ -2066,7 +2063,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, status = chip->waitfunc(mtd, chip); /* * See if operation failed and additional status checks are - * available + * available. */ if ((status & NAND_STATUS_FAIL) && (chip->errstat)) status = chip->errstat(mtd, chip, FL_WRITING, status, @@ -2091,10 +2088,10 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_fill_oob - [Internal] Transfer client buffer to oob - * @chip: nand chip structure - * @oob: oob data buffer - * @len: oob data write length - * @ops: oob ops structure + * @chip: nand chip structure + * @oob: oob data buffer + * @len: oob data write length + * @ops: oob ops structure */ static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, struct mtd_oob_ops *ops) @@ -2112,7 +2109,7 @@ static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, size_t bytes = 0; for (; free->length && len; free++, len -= bytes) { - /* Write request not from offset 0 ? */ + /* Write request not from offset 0? */ if (unlikely(woffs)) { if (woffs >= free->length) { woffs -= free->length; @@ -2141,11 +2138,11 @@ static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, /** * nand_do_write_ops - [Internal] NAND write with ECC - * @mtd: MTD device structure - * @to: offset to write to - * @ops: oob operations description structure + * @mtd: MTD device structure + * @to: offset to write to + * @ops: oob operations description structure * - * NAND write with ECC + * NAND write with ECC. */ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) @@ -2166,7 +2163,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, if (!writelen) return 0; - /* reject writes, which are not page aligned */ + /* Reject writes, which are not page aligned */ if (NOTALIGNED(to) || NOTALIGNED(ops->len)) { printk(KERN_NOTICE "%s: Attempt to write not " "page aligned data\n", __func__); @@ -2208,7 +2205,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, int cached = writelen > bytes && page != blockmask; uint8_t *wbuf = buf; - /* Partial page write ? */ + /* Partial page write? */ if (unlikely(column || writelen < (mtd->writesize - 1))) { cached = 0; bytes = min_t(int, bytes - column, (int) writelen); @@ -2254,11 +2251,11 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, /** * panic_nand_write - [MTD Interface] NAND write with ECC - * @mtd: MTD device structure - * @to: offset to write to - * @len: number of bytes to write - * @retlen: pointer to variable to store the number of written bytes - * @buf: the data to write + * @mtd: MTD device structure + * @to: offset to write to + * @len: number of bytes to write + * @retlen: pointer to variable to store the number of written bytes + * @buf: the data to write * * NAND write with ECC. Used when performing writes in interrupt context, this * may for example be called by mtdoops when writing an oops while in panic. @@ -2275,10 +2272,10 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len, if (!len) return 0; - /* Wait for the device to get ready. */ + /* Wait for the device to get ready */ panic_nand_wait(mtd, chip, 400); - /* Grab the device. */ + /* Grab the device */ panic_nand_get_device(chip, mtd, FL_WRITING); chip->ops.len = len; @@ -2293,13 +2290,13 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len, /** * nand_write - [MTD Interface] NAND write with ECC - * @mtd: MTD device structure - * @to: offset to write to - * @len: number of bytes to write - * @retlen: pointer to variable to store the number of written bytes - * @buf: the data to write + * @mtd: MTD device structure + * @to: offset to write to + * @len: number of bytes to write + * @retlen: pointer to variable to store the number of written bytes + * @buf: the data to write * - * NAND write with ECC + * NAND write with ECC. */ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const uint8_t *buf) @@ -2330,11 +2327,11 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, /** * nand_do_write_oob - [MTD Interface] NAND write out-of-band - * @mtd: MTD device structure - * @to: offset to write to - * @ops: oob operation description structure + * @mtd: MTD device structure + * @to: offset to write to + * @ops: oob operation description structure * - * NAND write out-of-band + * NAND write out-of-band. */ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) @@ -2410,9 +2407,9 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, /** * nand_write_oob - [MTD Interface] NAND write data and/or out-of-band - * @mtd: MTD device structure - * @to: offset to write to - * @ops: oob operation description structure + * @mtd: MTD device structure + * @to: offset to write to + * @ops: oob operation description structure */ static int nand_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) @@ -2453,10 +2450,10 @@ out: /** * single_erease_cmd - [GENERIC] NAND standard block erase command function - * @mtd: MTD device structure - * @page: the page address of the block which will be erased + * @mtd: MTD device structure + * @page: the page address of the block which will be erased * - * Standard erase command for NAND chips + * Standard erase command for NAND chips. */ static void single_erase_cmd(struct mtd_info *mtd, int page) { @@ -2468,11 +2465,10 @@ static void single_erase_cmd(struct mtd_info *mtd, int page) /** * multi_erease_cmd - [GENERIC] AND specific block erase command function - * @mtd: MTD device structure - * @page: the page address of the block which will be erased + * @mtd: MTD device structure + * @page: the page address of the block which will be erased * - * AND multi block erase command function - * Erase 4 consecutive blocks + * AND multi block erase command function. Erase 4 consecutive blocks. */ static void multi_erase_cmd(struct mtd_info *mtd, int page) { @@ -2487,10 +2483,10 @@ static void multi_erase_cmd(struct mtd_info *mtd, int page) /** * nand_erase - [MTD Interface] erase block(s) - * @mtd: MTD device structure - * @instr: erase instruction + * @mtd: MTD device structure + * @instr: erase instruction * - * Erase one ore more blocks + * Erase one ore more blocks. */ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr) { @@ -2500,11 +2496,11 @@ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr) #define BBT_PAGE_MASK 0xffffff3f /** * nand_erase_nand - [Internal] erase block(s) - * @mtd: MTD device structure - * @instr: erase instruction - * @allowbbt: allow erasing the bbt area + * @mtd: MTD device structure + * @instr: erase instruction + * @allowbbt: allow erasing the bbt area * - * Erase one ore more blocks + * Erase one ore more blocks. */ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, int allowbbt) @@ -2549,7 +2545,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, * If BBT requires refresh, set the BBT page mask to see if the BBT * should be rewritten. Otherwise the mask is set to 0xffffffff which * can not be matched. This is also done when the bbt is actually - * erased to avoid recusrsive updates + * erased to avoid recusrsive updates. */ if (chip->options & BBT_AUTO_REFRESH && !allowbbt) bbt_masked_page = chip->bbt_td->pages[chipnr] & BBT_PAGE_MASK; @@ -2560,9 +2556,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, instr->state = MTD_ERASING; while (len) { - /* - * heck if we have a bad block, we do not erase bad blocks ! - */ + /* Heck if we have a bad block, we do not erase bad blocks! */ if (nand_block_checkbad(mtd, ((loff_t) page) << chip->page_shift, 0, allowbbt)) { printk(KERN_WARNING "%s: attempt to erase a bad block " @@ -2573,7 +2567,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, /* * Invalidate the page cache, if we erase the block which - * contains the current cached page + * contains the current cached page. */ if (page <= chip->pagebuf && chip->pagebuf < (page + pages_per_block)) @@ -2603,7 +2597,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, /* * If BBT requires refresh, set the BBT rewrite flag to the - * page being erased + * page being erased. */ if (bbt_masked_page != 0xffffffff && (page & BBT_PAGE_MASK) == bbt_masked_page) @@ -2622,7 +2616,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, /* * If BBT requires refresh and BBT-PERCHIP, set the BBT - * page mask to see if this BBT should be rewritten + * page mask to see if this BBT should be rewritten. */ if (bbt_masked_page != 0xffffffff && (chip->bbt_td->options & NAND_BBT_PERCHIP)) @@ -2645,7 +2639,7 @@ erase_exit: /* * If BBT requires refresh and erase was successful, rewrite any - * selected bad block tables + * selected bad block tables. */ if (bbt_masked_page == 0xffffffff || ret) return ret; @@ -2653,7 +2647,7 @@ erase_exit: for (chipnr = 0; chipnr < chip->numchips; chipnr++) { if (!rewrite_bbt[chipnr]) continue; - /* update the BBT for chip */ + /* Update the BBT for chip */ DEBUG(MTD_DEBUG_LEVEL0, "%s: nand_update_bbt " "(%d:0x%0llx 0x%0x)\n", __func__, chipnr, rewrite_bbt[chipnr], chip->bbt_td->pages[chipnr]); @@ -2666,9 +2660,9 @@ erase_exit: /** * nand_sync - [MTD Interface] sync - * @mtd: MTD device structure + * @mtd: MTD device structure * - * Sync is actually a wait for chip ready function + * Sync is actually a wait for chip ready function. */ static void nand_sync(struct mtd_info *mtd) { @@ -2684,8 +2678,8 @@ static void nand_sync(struct mtd_info *mtd) /** * nand_block_isbad - [MTD Interface] Check if block at offset is bad - * @mtd: MTD device structure - * @offs: offset relative to mtd start + * @mtd: MTD device structure + * @offs: offset relative to mtd start */ static int nand_block_isbad(struct mtd_info *mtd, loff_t offs) { @@ -2698,8 +2692,8 @@ static int nand_block_isbad(struct mtd_info *mtd, loff_t offs) /** * nand_block_markbad - [MTD Interface] Mark block at the given offset as bad - * @mtd: MTD device structure - * @ofs: offset relative to mtd start + * @mtd: MTD device structure + * @ofs: offset relative to mtd start */ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs) { @@ -2708,7 +2702,7 @@ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs) ret = nand_block_isbad(mtd, ofs); if (ret) { - /* If it was bad already, return success and do nothing. */ + /* If it was bad already, return success and do nothing */ if (ret > 0) return 0; return ret; @@ -2719,7 +2713,7 @@ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs) /** * nand_suspend - [MTD Interface] Suspend the NAND flash - * @mtd: MTD device structure + * @mtd: MTD device structure */ static int nand_suspend(struct mtd_info *mtd) { @@ -2730,7 +2724,7 @@ static int nand_suspend(struct mtd_info *mtd) /** * nand_resume - [MTD Interface] Resume the NAND flash - * @mtd: MTD device structure + * @mtd: MTD device structure */ static void nand_resume(struct mtd_info *mtd) { @@ -2743,9 +2737,7 @@ static void nand_resume(struct mtd_info *mtd) "in suspended state\n", __func__); } -/* - * Set default functions - */ +/* Set default functions */ static void nand_set_defaults(struct nand_chip *chip, int busw) { /* check for proper chip_delay setup, set 20us if not */ @@ -2787,23 +2779,21 @@ static void nand_set_defaults(struct nand_chip *chip, int busw) } -/* - * sanitize ONFI strings so we can safely print them - */ +/* Sanitize ONFI strings so we can safely print them */ static void sanitize_string(uint8_t *s, size_t len) { ssize_t i; - /* null terminate */ + /* Null terminate */ s[len - 1] = 0; - /* remove non printable chars */ + /* Remove non printable chars */ for (i = 0; i < len - 1; i++) { if (s[i] < ' ' || s[i] > 127) s[i] = '?'; } - /* remove trailing spaces */ + /* Remove trailing spaces */ strim(s); } @@ -2820,7 +2810,7 @@ static u16 onfi_crc16(u16 crc, u8 const *p, size_t len) } /* - * Check if the NAND chip is ONFI compliant, returns 1 if it is, 0 otherwise + * Check if the NAND chip is ONFI compliant, returns 1 if it is, 0 otherwise. */ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, int busw) @@ -2829,7 +2819,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, int i; int val; - /* try ONFI for unknow chip or LP */ + /* Try ONFI for unknow chip or LP */ chip->cmdfunc(mtd, NAND_CMD_READID, 0x20, -1); if (chip->read_byte(mtd) != 'O' || chip->read_byte(mtd) != 'N' || chip->read_byte(mtd) != 'F' || chip->read_byte(mtd) != 'I') @@ -2849,7 +2839,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, if (i == 3) return 0; - /* check version */ + /* Check version */ val = le16_to_cpu(p->revision); if (val & (1 << 5)) chip->onfi_version = 23; @@ -2890,7 +2880,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, } /* - * Get the flash and manufacturer id and lookup if the type is supported + * Get the flash and manufacturer id and lookup if the type is supported. */ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, struct nand_chip *chip, @@ -2907,7 +2897,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, /* * Reset the chip, required by some chips (e.g. Micron MT29FxGxxxxx) - * after power-up + * after power-up. */ chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); @@ -2918,7 +2908,8 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, *maf_id = chip->read_byte(mtd); *dev_id = chip->read_byte(mtd); - /* Try again to make sure, as some systems the bus-hold or other + /* + * Try again to make sure, as some systems the bus-hold or other * interface concerns can cause random data which looks like a * possibly credible NAND flash to appear. If the two results do * not match, ignore the device completely. @@ -2967,7 +2958,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, chip->chipsize = (uint64_t)type->chipsize << 20; if (!type->pagesize && chip->init_size) { - /* set the pagesize, oobsize, erasesize by the driver*/ + /* Set the pagesize, oobsize, erasesize by the driver */ busw = chip->init_size(mtd, chip, id_data); } else if (!type->pagesize) { int extid; @@ -3027,7 +3018,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, } } else { /* - * Old devices have chip data hardcoded in the device id table + * Old devices have chip data hardcoded in the device id table. */ mtd->erasesize = type->erasesize; mtd->writesize = type->pagesize; @@ -3037,7 +3028,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, /* * Check for Spansion/AMD ID + repeating 5th, 6th byte since * some Spansion chips have erasesize that conflicts with size - * listed in nand_ids table + * listed in nand_ids table. * Data sheet (5 byte ID): Spansion S30ML-P ORNAND (p.39) */ if (*maf_id == NAND_MFR_AMD && id_data[4] != 0x00 && @@ -3051,15 +3042,16 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, chip->options &= ~NAND_CHIPOPTIONS_MSK; chip->options |= type->options & NAND_CHIPOPTIONS_MSK; - /* Check if chip is a not a samsung device. Do not clear the - * options for chips which are not having an extended id. + /* + * Check if chip is not a Samsung device. Do not clear the + * options for chips which do not have an extended id. */ if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize) chip->options &= ~NAND_SAMSUNG_LP_OPTIONS; ident_done: /* - * Set chip as a default. Board drivers can override it, if necessary + * Set chip as a default. Board drivers can override it, if necessary. */ chip->options |= NAND_NO_AUTOINCR; @@ -3071,7 +3063,7 @@ ident_done: /* * Check, if buswidth is correct. Hardware drivers should set - * chip correct ! + * chip correct! */ if (busw != (chip->options & NAND_BUSWIDTH_16)) { printk(KERN_INFO "NAND device: Manufacturer ID:" @@ -3085,7 +3077,7 @@ ident_done: /* Calculate the address shift from the page size */ chip->page_shift = ffs(mtd->writesize) - 1; - /* Convert chipsize to number of pages per chip -1. */ + /* Convert chipsize to number of pages per chip -1 */ chip->pagemask = (chip->chipsize >> chip->page_shift) - 1; chip->bbt_erase_shift = chip->phys_erase_shift = @@ -3131,7 +3123,7 @@ ident_done: else chip->erase_cmd = single_erase_cmd; - /* Do not replace user supplied command function ! */ + /* Do not replace user supplied command function! */ if (mtd->writesize > 512 && chip->cmdfunc == nand_command) chip->cmdfunc = nand_command_lp; @@ -3145,12 +3137,12 @@ ident_done: /** * nand_scan_ident - [NAND Interface] Scan for the NAND device - * @mtd: MTD device structure - * @maxchips: Number of chips to scan for - * @table: Alternative NAND ID table + * @mtd: MTD device structure + * @maxchips: number of chips to scan for + * @table: alternative NAND ID table * - * This is the first phase of the normal nand_scan() function. It - * reads the flash ID and sets up MTD fields accordingly. + * This is the first phase of the normal nand_scan() function. It reads the + * flash ID and sets up MTD fields accordingly. * * The mtd->owner field must be set to the module of the caller. */ @@ -3203,11 +3195,11 @@ EXPORT_SYMBOL(nand_scan_ident); /** * nand_scan_tail - [NAND Interface] Scan for the NAND device - * @mtd: MTD device structure + * @mtd: MTD device structure * - * This is the second phase of the normal nand_scan() function. It - * fills out all the uninitialized function pointers with the defaults - * and scans for a bad block table if appropriate. + * This is the second phase of the normal nand_scan() function. It fills out + * all the uninitialized function pointers with the defaults and scans for a + * bad block table if appropriate. */ int nand_scan_tail(struct mtd_info *mtd) { @@ -3223,7 +3215,7 @@ int nand_scan_tail(struct mtd_info *mtd) chip->oob_poi = chip->buffers->databuf + mtd->writesize; /* - * If no default placement scheme is given, select an appropriate one + * If no default placement scheme is given, select an appropriate one. */ if (!chip->ecc.layout && (chip->ecc.mode != NAND_ECC_SOFT_BCH)) { switch (mtd->oobsize) { @@ -3250,7 +3242,7 @@ int nand_scan_tail(struct mtd_info *mtd) chip->write_page = nand_write_page; /* - * check ECC mode, default to software if 3byte/512byte hardware ECC is + * Check ECC mode, default to software if 3byte/512byte hardware ECC is * selected and we have 256 byte pagesize fallback to software ECC */ @@ -3267,7 +3259,7 @@ int nand_scan_tail(struct mtd_info *mtd) chip->ecc.read_page = nand_read_page_hwecc_oob_first; case NAND_ECC_HW: - /* Use standard hwecc read page function ? */ + /* Use standard hwecc read page function? */ if (!chip->ecc.read_page) chip->ecc.read_page = nand_read_page_hwecc; if (!chip->ecc.write_page) @@ -3292,7 +3284,7 @@ int nand_scan_tail(struct mtd_info *mtd) "Hardware ECC not possible\n"); BUG(); } - /* Use standard syndrome read/write page function ? */ + /* Use standard syndrome read/write page function? */ if (!chip->ecc.read_page) chip->ecc.read_page = nand_read_page_syndrome; if (!chip->ecc.write_page) @@ -3345,8 +3337,8 @@ int nand_scan_tail(struct mtd_info *mtd) /* * Board driver should supply ecc.size and ecc.bytes values to * select how many bits are correctable; see nand_bch_init() - * for details. - * Otherwise, default to 4 bits for large page devices + * for details. Otherwise, default to 4 bits for large page + * devices. */ if (!chip->ecc.size && (mtd->oobsize >= 64)) { chip->ecc.size = 512; @@ -3383,7 +3375,7 @@ int nand_scan_tail(struct mtd_info *mtd) /* * The number of bytes available for a client to place data into - * the out of band area + * the out of band area. */ chip->ecc.layout->oobavail = 0; for (i = 0; chip->ecc.layout->oobfree[i].length @@ -3394,7 +3386,7 @@ int nand_scan_tail(struct mtd_info *mtd) /* * Set the number of read / write steps for one page depending on ECC - * mode + * mode. */ chip->ecc.steps = mtd->writesize / chip->ecc.size; if (chip->ecc.steps * chip->ecc.size != mtd->writesize) { @@ -3403,10 +3395,7 @@ int nand_scan_tail(struct mtd_info *mtd) } chip->ecc.total = chip->ecc.steps * chip->ecc.bytes; - /* - * Allow subpage writes up to ecc.steps. Not possible for MLC - * FLASH. - */ + /* Allow subpage writes up to ecc.steps. Not possible for MLC flash */ if (!(chip->options & NAND_NO_SUBPAGE_WRITE) && !(chip->cellinfo & NAND_CI_CELLTYPE_MSK)) { switch (chip->ecc.steps) { @@ -3464,9 +3453,11 @@ int nand_scan_tail(struct mtd_info *mtd) } EXPORT_SYMBOL(nand_scan_tail); -/* is_module_text_address() isn't exported, and it's mostly a pointless +/* + * is_module_text_address() isn't exported, and it's mostly a pointless * test if this is a module _anyway_ -- they'd have to try _really_ hard - * to call us from in-kernel code if the core NAND support is modular. */ + * to call us from in-kernel code if the core NAND support is modular. + */ #ifdef MODULE #define caller_is_module() (1) #else @@ -3476,15 +3467,13 @@ EXPORT_SYMBOL(nand_scan_tail); /** * nand_scan - [NAND Interface] Scan for the NAND device - * @mtd: MTD device structure - * @maxchips: Number of chips to scan for - * - * This fills out all the uninitialized function pointers - * with the defaults. - * The flash ID is read and the mtd/chip structures are - * filled with the appropriate values. - * The mtd->owner field must be set to the module of the caller + * @mtd: MTD device structure + * @maxchips: number of chips to scan for * + * This fills out all the uninitialized function pointers with the defaults. + * The flash ID is read and the mtd/chip structures are filled with the + * appropriate values. The mtd->owner field must be set to the module of the + * caller. */ int nand_scan(struct mtd_info *mtd, int maxchips) { @@ -3506,8 +3495,8 @@ EXPORT_SYMBOL(nand_scan); /** * nand_release - [NAND Interface] Free resources held by the NAND device - * @mtd: MTD device structure -*/ + * @mtd: MTD device structure + */ void nand_release(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 9af703d..ba40166 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -80,17 +80,15 @@ static int check_pattern_no_oob(uint8_t *buf, struct nand_bbt_descr *td) /** * check_pattern - [GENERIC] check if a pattern is in the buffer - * @buf: the buffer to search - * @len: the length of buffer to search - * @paglen: the pagelength - * @td: search pattern descriptor + * @buf: the buffer to search + * @len: the length of buffer to search + * @paglen: the pagelength + * @td: search pattern descriptor * - * Check for a pattern at the given place. Used to search bad block - * tables and good / bad block identifiers. - * If the SCAN_EMPTY option is set then check, if all bytes except the - * pattern area contain 0xff - * -*/ + * Check for a pattern at the given place. Used to search bad block tables and + * good / bad block identifiers. If the SCAN_EMPTY option is set then check, if + * all bytes except the pattern area contain 0xff. + */ static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td) { int i, end = 0; @@ -127,14 +125,13 @@ static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_desc /** * check_short_pattern - [GENERIC] check if a pattern is in the buffer - * @buf: the buffer to search - * @td: search pattern descriptor - * - * Check for a pattern at the given place. Used to search bad block - * tables and good / bad block identifiers. Same as check_pattern, but - * no optional empty check + * @buf: the buffer to search + * @td: search pattern descriptor * -*/ + * Check for a pattern at the given place. Used to search bad block tables and + * good / bad block identifiers. Same as check_pattern, but no optional empty + * check. + */ static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) { int i; @@ -150,7 +147,7 @@ static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) /** * add_marker_len - compute the length of the marker in data area - * @td: BBT descriptor used for computation + * @td: BBT descriptor used for computation * * The length will be 0 if the markeris located in OOB area. */ @@ -169,15 +166,14 @@ static u32 add_marker_len(struct nand_bbt_descr *td) /** * read_bbt - [GENERIC] Read the bad block table starting from page - * @mtd: MTD device structure - * @buf: temporary buffer - * @page: the starting page - * @num: the number of bbt descriptors to read - * @td: the bbt describtion table - * @offs: offset in the memory table + * @mtd: MTD device structure + * @buf: temporary buffer + * @page: the starting page + * @num: the number of bbt descriptors to read + * @td: the bbt describtion table + * @offs: offset in the memory table * * Read the bad block table starting from page. - * */ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, struct nand_bbt_descr *td, int offs) @@ -229,11 +225,13 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, mtd->ecc_stats.bbtblocks++; continue; } - /* Leave it for now, if its matured we can move this - * message to MTD_DEBUG_LEVEL0 */ + /* + * Leave it for now, if it's matured we can + * move this message to MTD_DEBUG_LEVEL0. + */ printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%012llx\n", (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); - /* Factory marked bad or worn out ? */ + /* Factory marked bad or worn out? */ if (tmp == 0) this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06); else @@ -249,15 +247,15 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, /** * read_abs_bbt - [GENERIC] Read the bad block table starting at a given page - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table - * @chip: read the table for a specific chip, -1 read all chips. - * Applies only if NAND_BBT_PERCHIP option is set + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @chip: read the table for a specific chip, -1 read all chips; aplies only if + * NAND_BBT_PERCHIP option is set * - * Read the bad block table for all chips starting at a given page - * We assume that the bbt bits are in consecutive order. -*/ + * Read the bad block table for all chips starting at a given page. We assume + * that the bbt bits are in consecutive order. + */ static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip) { struct nand_chip *this = mtd->priv; @@ -283,9 +281,7 @@ static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc return 0; } -/* - * BBT marker is in the first page, no OOB. - */ +/* BBT marker is in the first page, no OOB */ static int scan_read_raw_data(struct mtd_info *mtd, uint8_t *buf, loff_t offs, struct nand_bbt_descr *td) { @@ -299,9 +295,7 @@ static int scan_read_raw_data(struct mtd_info *mtd, uint8_t *buf, loff_t offs, return mtd->read(mtd, offs, len, &retlen, buf); } -/* - * Scan read raw data from flash - */ +/* Scan read raw data from flash */ static int scan_read_raw_oob(struct mtd_info *mtd, uint8_t *buf, loff_t offs, size_t len) { @@ -344,9 +338,7 @@ static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs, return scan_read_raw_oob(mtd, buf, offs, len); } -/* - * Scan write data with oob to flash - */ +/* Scan write data with oob to flash */ static int scan_write_bbt(struct mtd_info *mtd, loff_t offs, size_t len, uint8_t *buf, uint8_t *oob) { @@ -373,15 +365,14 @@ static u32 bbt_get_ver_offs(struct mtd_info *mtd, struct nand_bbt_descr *td) /** * read_abs_bbts - [GENERIC] Read the bad block table(s) for all chips starting at a given page - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table - * @md: descriptor for the bad block table mirror - * - * Read the bad block table(s) for all chips starting at a given page - * We assume that the bbt bits are in consecutive order. + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @md: descriptor for the bad block table mirror * -*/ + * Read the bad block table(s) for all chips starting at a given page. We + * assume that the bbt bits are in consecutive order. + */ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md) { @@ -407,9 +398,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, return 1; } -/* - * Scan a given block full - */ +/* Scan a given block full */ static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd, loff_t offs, uint8_t *buf, size_t readlen, int scanlen, int len) @@ -427,9 +416,7 @@ static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd, return 0; } -/* - * Scan a given block partially - */ +/* Scan a given block partially */ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd, loff_t offs, uint8_t *buf, int len) { @@ -444,9 +431,8 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd, for (j = 0; j < len; j++) { /* - * Read the full oob until read_oob is fixed to - * handle single byte reads for 16 bit - * buswidth + * Read the full oob until read_oob is fixed to handle single + * byte reads for 16 bit buswidth. */ ret = mtd->read_oob(mtd, offs, &ops); if (ret) @@ -462,14 +448,14 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd, /** * create_bbt - [GENERIC] Create a bad block table by scanning the device - * @mtd: MTD device structure - * @buf: temporary buffer - * @bd: descriptor for the good/bad block search pattern - * @chip: create the table for a specific chip, -1 read all chips. - * Applies only if NAND_BBT_PERCHIP option is set + * @mtd: MTD device structure + * @buf: temporary buffer + * @bd: descriptor for the good/bad block search pattern + * @chip: create the table for a specific chip, -1 read all chips; applies only + * if NAND_BBT_PERCHIP option is set * - * Create a bad block table by scanning the device - * for the given good/bad block identify pattern + * Create a bad block table by scanning the device for the given good/bad block + * identify pattern. */ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd, int chip) @@ -500,8 +486,10 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, } if (chip == -1) { - /* Note that numblocks is 2 * (real numblocks) here, see i+=2 - * below as it makes shifting and masking less painful */ + /* + * Note that numblocks is 2 * (real numblocks) here, see i+=2 + * below as it makes shifting and masking less painful + */ numblocks = mtd->size >> (this->bbt_erase_shift - 1); startblock = 0; from = 0; @@ -549,20 +537,18 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, /** * search_bbt - [GENERIC] scan the device for a specific bad block table - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table * - * Read the bad block table by searching for a given ident pattern. - * Search is preformed either from the beginning up or from the end of - * the device downwards. The search starts always at the start of a - * block. - * If the option NAND_BBT_PERCHIP is given, each chip is searched - * for a bbt, which contains the bad block information of this chip. - * This is necessary to provide support for certain DOC devices. + * Read the bad block table by searching for a given ident pattern. Search is + * preformed either from the beginning up or from the end of the device + * downwards. The search starts always at the start of a block. If the option + * NAND_BBT_PERCHIP is given, each chip is searched for a bbt, which contains + * the bad block information of this chip. This is necessary to provide support + * for certain DOC devices. * - * The bbt ident pattern resides in the oob area of the first page - * in a block. + * The bbt ident pattern resides in the oob area of the first page in a block. */ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td) { @@ -573,7 +559,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr int bbtblocks; int blocktopage = this->bbt_erase_shift - this->page_shift; - /* Search direction top -> down ? */ + /* Search direction top -> down? */ if (td->options & NAND_BBT_LASTBLOCK) { startblock = (mtd->size >> this->bbt_erase_shift) - 1; dir = -1; @@ -582,7 +568,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr dir = 1; } - /* Do we have a bbt per chip ? */ + /* Do we have a bbt per chip? */ if (td->options & NAND_BBT_PERCHIP) { chips = this->numchips; bbtblocks = this->chipsize >> this->bbt_erase_shift; @@ -631,13 +617,13 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr /** * search_read_bbts - [GENERIC] scan the device for bad block table(s) - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table - * @md: descriptor for the bad block table mirror + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @md: descriptor for the bad block table mirror * - * Search and read the bad block table(s) -*/ + * Search and read the bad block table(s). + */ static int search_read_bbts(struct mtd_info *mtd, uint8_t * buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md) { /* Search the primary table */ @@ -653,16 +639,14 @@ static int search_read_bbts(struct mtd_info *mtd, uint8_t * buf, struct nand_bbt /** * write_bbt - [GENERIC] (Re)write the bad block table + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @md: descriptor for the bad block table mirror + * @chipsel: selector for a specific chip, -1 for all * - * @mtd: MTD device structure - * @buf: temporary buffer - * @td: descriptor for the bad block table - * @md: descriptor for the bad block table mirror - * @chipsel: selector for a specific chip, -1 for all - * - * (Re)write the bad block table - * -*/ + * (Re)write the bad block table. + */ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md, int chipsel) @@ -685,10 +669,10 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (!rcode) rcode = 0xff; - /* Write bad block table per chip rather than per device ? */ + /* Write bad block table per chip rather than per device? */ if (td->options & NAND_BBT_PERCHIP) { numblocks = (int)(this->chipsize >> this->bbt_erase_shift); - /* Full device write or specific chip ? */ + /* Full device write or specific chip? */ if (chipsel == -1) { nrchips = this->numchips; } else { @@ -702,8 +686,8 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, /* Loop through the chips */ for (; chip < nrchips; chip++) { - - /* There was already a version of the table, reuse the page + /* + * There was already a version of the table, reuse the page * This applies for absolute placement too, as we have the * page nr. in td->pages. */ @@ -712,8 +696,10 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, goto write; } - /* Automatic placement of the bad block table */ - /* Search direction top -> down ? */ + /* + * Automatic placement of the bad block table. Search direction + * top -> down? + */ if (td->options & NAND_BBT_LASTBLOCK) { startblock = numblocks * (chip + 1) - 1; dir = -1; @@ -764,7 +750,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, to = ((loff_t) page) << this->page_shift; - /* Must we save the block contents ? */ + /* Must we save the block contents? */ if (td->options & NAND_BBT_SAVECONTENT) { /* Make it block aligned */ to &= ~((loff_t) ((1 << this->bbt_erase_shift) - 1)); @@ -798,13 +784,13 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, } else if (td->options & NAND_BBT_NO_OOB) { ooboffs = 0; offs = td->len; - /* the version byte */ + /* The version byte */ if (td->options & NAND_BBT_VERSION) offs++; /* Calc length */ len = (size_t) (numblocks >> sft); len += offs; - /* Make it page aligned ! */ + /* Make it page aligned! */ len = ALIGN(len, mtd->writesize); /* Preset the buffer with 0xff */ memset(buf, 0xff, len); @@ -813,7 +799,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, } else { /* Calc length */ len = (size_t) (numblocks >> sft); - /* Make it page aligned ! */ + /* Make it page aligned! */ len = ALIGN(len, mtd->writesize); /* Preset the buffer with 0xff */ memset(buf, 0xff, len + @@ -827,13 +813,13 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (td->options & NAND_BBT_VERSION) buf[ooboffs + td->veroffs] = td->version[chip]; - /* walk through the memory table */ + /* Walk through the memory table */ for (i = 0; i < numblocks;) { uint8_t dat; dat = this->bbt[bbtoffs + (i >> 2)]; for (j = 0; j < 4; j++, i++) { int sftcnt = (i << (3 - sft)) & sftmsk; - /* Do not store the reserved bbt blocks ! */ + /* Do not store the reserved bbt blocks! */ buf[offs + (i >> sft)] &= ~(msk[dat & 0x03] << sftcnt); dat >>= 2; @@ -870,12 +856,12 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, /** * nand_memory_bbt - [GENERIC] create a memory based bad block table - * @mtd: MTD device structure - * @bd: descriptor for the good/bad block search pattern + * @mtd: MTD device structure + * @bd: descriptor for the good/bad block search pattern * - * The function creates a memory based bbt by scanning the device - * for manufacturer / software marked good / bad blocks -*/ + * The function creates a memory based bbt by scanning the device for + * manufacturer / software marked good / bad blocks. + */ static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) { struct nand_chip *this = mtd->priv; @@ -886,16 +872,15 @@ static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *b /** * check_create - [GENERIC] create and write bbt(s) if necessary - * @mtd: MTD device structure - * @buf: temporary buffer - * @bd: descriptor for the good/bad block search pattern + * @mtd: MTD device structure + * @buf: temporary buffer + * @bd: descriptor for the good/bad block search pattern * - * The function checks the results of the previous call to read_bbt - * and creates / updates the bbt(s) if necessary - * Creation is necessary if no bbt was found for the chip/device - * Update is necessary if one of the tables is missing or the - * version nr. of one table is less than the other -*/ + * The function checks the results of the previous call to read_bbt and creates + * / updates the bbt(s) if necessary. Creation is necessary if no bbt was found + * for the chip/device. Update is necessary if one of the tables is missing or + * the version nr. of one table is less than the other. + */ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) { int i, chips, writeops, chipsel, res; @@ -904,7 +889,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc struct nand_bbt_descr *md = this->bbt_md; struct nand_bbt_descr *rd, *rd2; - /* Do we have a bbt per chip ? */ + /* Do we have a bbt per chip? */ if (td->options & NAND_BBT_PERCHIP) chips = this->numchips; else @@ -914,9 +899,9 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc writeops = 0; rd = NULL; rd2 = NULL; - /* Per chip or per device ? */ + /* Per chip or per device? */ chipsel = (td->options & NAND_BBT_PERCHIP) ? i : -1; - /* Mirrored table available ? */ + /* Mirrored table available? */ if (md) { if (td->pages[i] == -1 && md->pages[i] == -1) { writeops = 0x03; @@ -965,7 +950,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc goto writecheck; } create: - /* Create the bad block table by scanning the device ? */ + /* Create the bad block table by scanning the device? */ if (!(td->options & NAND_BBT_CREATE)) continue; @@ -977,21 +962,21 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc if (md) md->version[i] = 1; writecheck: - /* read back first ? */ + /* Read back first? */ if (rd) read_abs_bbt(mtd, buf, rd, chipsel); - /* If they weren't versioned, read both. */ + /* If they weren't versioned, read both */ if (rd2) read_abs_bbt(mtd, buf, rd2, chipsel); - /* Write the bad block table to the device ? */ + /* Write the bad block table to the device? */ if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { res = write_bbt(mtd, buf, td, md, chipsel); if (res < 0) return res; } - /* Write the mirror bad block table to the device ? */ + /* Write the mirror bad block table to the device? */ if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { res = write_bbt(mtd, buf, md, td, chipsel); if (res < 0) @@ -1003,20 +988,19 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc /** * mark_bbt_regions - [GENERIC] mark the bad block table regions - * @mtd: MTD device structure - * @td: bad block table descriptor + * @mtd: MTD device structure + * @td: bad block table descriptor * - * The bad block table regions are marked as "bad" to prevent - * accidental erasures / writes. The regions are identified by - * the mark 0x02. -*/ + * The bad block table regions are marked as "bad" to prevent accidental + * erasures / writes. The regions are identified by the mark 0x02. + */ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td) { struct nand_chip *this = mtd->priv; int i, j, chips, block, nrblocks, update; uint8_t oldval, newval; - /* Do we have a bbt per chip ? */ + /* Do we have a bbt per chip? */ if (td->options & NAND_BBT_PERCHIP) { chips = this->numchips; nrblocks = (int)(this->chipsize >> this->bbt_erase_shift); @@ -1053,9 +1037,11 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td) update = 1; block += 2; } - /* If we want reserved blocks to be recorded to flash, and some - new ones have been marked, then we need to update the stored - bbts. This should only happen once. */ + /* + * If we want reserved blocks to be recorded to flash, and some + * new ones have been marked, then we need to update the stored + * bbts. This should only happen once. + */ if (update && td->reserved_block_code) nand_update_bbt(mtd, (loff_t)(block - 2) << (this->bbt_erase_shift - 1)); } @@ -1063,8 +1049,8 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td) /** * verify_bbt_descr - verify the bad block description - * @mtd: MTD device structure - * @bd: the table to verify + * @mtd: MTD device structure + * @bd: the table to verify * * This functions performs a few sanity checks on the bad block description * table. @@ -1111,18 +1097,16 @@ static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd) /** * nand_scan_bbt - [NAND Interface] scan, find, read and maybe create bad block table(s) - * @mtd: MTD device structure - * @bd: descriptor for the good/bad block search pattern + * @mtd: MTD device structure + * @bd: descriptor for the good/bad block search pattern * - * The function checks, if a bad block table(s) is/are already - * available. If not it scans the device for manufacturer - * marked good / bad blocks and writes the bad block table(s) to - * the selected place. + * The function checks, if a bad block table(s) is/are already available. If + * not it scans the device for manufacturer marked good / bad blocks and writes + * the bad block table(s) to the selected place. * - * The bad block table memory is allocated here. It must be freed - * by calling the nand_free_bbt function. - * -*/ + * The bad block table memory is allocated here. It must be freed by calling + * the nand_free_bbt function. + */ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) { struct nand_chip *this = mtd->priv; @@ -1132,15 +1116,19 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) struct nand_bbt_descr *md = this->bbt_md; len = mtd->size >> (this->bbt_erase_shift + 2); - /* Allocate memory (2bit per block) and clear the memory bad block table */ + /* + * Allocate memory (2bit per block) and clear the memory bad block + * table. + */ this->bbt = kzalloc(len, GFP_KERNEL); if (!this->bbt) { printk(KERN_ERR "nand_scan_bbt: Out of memory\n"); return -ENOMEM; } - /* If no primary table decriptor is given, scan the device - * to build a memory based bad block table + /* + * If no primary table decriptor is given, scan the device to build a + * memory based bad block table. */ if (!td) { if ((res = nand_memory_bbt(mtd, bd))) { @@ -1164,7 +1152,7 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) return -ENOMEM; } - /* Is the bbt at a given page ? */ + /* Is the bbt at a given page? */ if (td->options & NAND_BBT_ABSPAGE) { res = read_abs_bbts(mtd, buf, td, md); } else { @@ -1186,11 +1174,11 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) /** * nand_update_bbt - [NAND Interface] update bad block table(s) - * @mtd: MTD device structure - * @offs: the offset of the newly marked block + * @mtd: MTD device structure + * @offs: the offset of the newly marked block * - * The function updates the bad block table(s) -*/ + * The function updates the bad block table(s). + */ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) { struct nand_chip *this = mtd->priv; @@ -1214,7 +1202,7 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) writeops = md != NULL ? 0x03 : 0x01; - /* Do we have a bbt per chip ? */ + /* Do we have a bbt per chip? */ if (td->options & NAND_BBT_PERCHIP) { chip = (int)(offs >> this->chip_shift); chipsel = chip; @@ -1227,13 +1215,13 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) if (md) md->version[chip]++; - /* Write the bad block table to the device ? */ + /* Write the bad block table to the device? */ if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { res = write_bbt(mtd, buf, td, md, chipsel); if (res < 0) goto out; } - /* Write the mirror bad block table to the device ? */ + /* Write the mirror bad block table to the device? */ if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { res = write_bbt(mtd, buf, md, td, chipsel); } @@ -1243,8 +1231,10 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) return res; } -/* Define some generic bad / good block scan pattern which are used - * while scanning a device for factory marked good / bad blocks. */ +/* + * Define some generic bad / good block scan pattern which are used + * while scanning a device for factory marked good / bad blocks. + */ static uint8_t scan_ff_pattern[] = { 0xff, 0xff }; static uint8_t scan_agand_pattern[] = { 0x1C, 0x71, 0xC7, 0x1C, 0x71, 0xC7 }; @@ -1256,8 +1246,7 @@ static struct nand_bbt_descr agand_flashbased = { .pattern = scan_agand_pattern }; -/* Generic flash bbt decriptors -*/ +/* Generic flash bbt decriptors */ static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' }; static uint8_t mirror_pattern[] = {'1', 't', 'b', 'B' }; @@ -1303,13 +1292,12 @@ static struct nand_bbt_descr bbt_mirror_no_bbt_descr = { /** * nand_create_default_bbt_descr - [Internal] Creates a BBT descriptor structure - * @this: NAND chip to create descriptor for + * @this: NAND chip to create descriptor for * * This function allocates and initializes a nand_bbt_descr for BBM detection * based on the properties of "this". The new descriptor is stored in * this->badblock_pattern. Thus, this->badblock_pattern should be NULL when * passed to this function. - * */ static int nand_create_default_bbt_descr(struct nand_chip *this) { @@ -1334,22 +1322,20 @@ static int nand_create_default_bbt_descr(struct nand_chip *this) /** * nand_default_bbt - [NAND Interface] Select a default bad block table for the device - * @mtd: MTD device structure - * - * This function selects the default bad block table - * support for the device and calls the nand_scan_bbt function + * @mtd: MTD device structure * -*/ + * This function selects the default bad block table support for the device and + * calls the nand_scan_bbt function. + */ int nand_default_bbt(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; - /* Default for AG-AND. We must use a flash based - * bad block table as the devices have factory marked - * _good_ blocks. Erasing those blocks leads to loss - * of the good / bad information, so we _must_ store - * this information in a good / bad table during - * startup + /* + * Default for AG-AND. We must use a flash based bad block table as the + * devices have factory marked _good_ blocks. Erasing those blocks + * leads to loss of the good / bad information, so we _must_ store this + * information in a good / bad table during startup. */ if (this->options & NAND_IS_AND) { /* Use the default pattern descriptors */ @@ -1361,7 +1347,7 @@ int nand_default_bbt(struct mtd_info *mtd) return nand_scan_bbt(mtd, &agand_flashbased); } - /* Is a flash based bad block table requested ? */ + /* Is a flash based bad block table requested? */ if (this->bbt_options & NAND_BBT_USE_FLASH) { /* Use the default pattern descriptors */ if (!this->bbt_td) { @@ -1386,11 +1372,10 @@ int nand_default_bbt(struct mtd_info *mtd) /** * nand_isbad_bbt - [NAND Interface] Check if a block is bad - * @mtd: MTD device structure - * @offs: offset in the device - * @allowbbt: allow access to bad block table region - * -*/ + * @mtd: MTD device structure + * @offs: offset in the device + * @allowbbt: allow access to bad block table region + */ int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) { struct nand_chip *this = mtd->priv; -- cgit v0.10.2 From bf5140817b2d65faac9b32fc9057a097044ac35b Mon Sep 17 00:00:00 2001 From: Peter Wippich Date: Mon, 6 Jun 2011 15:50:58 +0200 Subject: mtd: mtdchar: add missing initializer on raw write On writes in MODE_RAW the mtd_oob_ops struct is not sufficiently initialized which may cause nandwrite to fail. With this patch it is possible to write raw nand/oob data without additional ECC (either for testing or when some sectors need different oob layout e.g. bootloader) like nandwrite -n -r -o /dev/mtd0 Signed-off-by: Peter Wippich Cc: stable@kernel.org Tested-by: Ricard Wanderlof Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index f1af222..49e20a4 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -320,6 +320,7 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count ops.mode = MTD_OOB_RAW; ops.datbuf = kbuf; ops.oobbuf = NULL; + ops.ooboffs = 0; ops.len = len; ret = mtd->write_oob(mtd, *ppos, &ops); -- cgit v0.10.2 From 1a31368bf92ef2a7da3ba379672c405bd2751df9 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 6 Jun 2011 18:04:14 +0400 Subject: mtd: add a flags for partitions which should just leave smth. after them Add support for MTDPART_OFS_RETAIN: such partitions start at the current offset, take as much space as possible, but rain part->size bytes after the end of the partitions for other parts. Primarily this is intended for ts72xx arm platforms cleanup. Artem: tweaked the patch a bit Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 3477e16..b7372050 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -479,6 +479,19 @@ static struct mtd_part *allocate_partition(struct mtd_info *master, (unsigned long long)cur_offset, (unsigned long long)slave->offset); } } + if (slave->offset == MTDPART_OFS_RETAIN) { + slave->offset = cur_offset; + if (master->size - slave->offset >= slave->mtd.size) { + slave->mtd.size = master->size - slave->offset + - slave->mtd.size; + } else { + printk(KERN_ERR "mtd partition \"%s\" doesn't have enough space: %#llx < %#llx, disabled\n", + part->name, master->size - slave->offset, + slave->mtd.size); + /* register to preserve ordering */ + goto out_register; + } + } if (slave->mtd.size == MTDPART_SIZ_FULL) slave->mtd.size = master->size - slave->offset; diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 08c9c7b..1431cf2 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -24,7 +24,9 @@ * will extend to the end of the master MTD device. * offset: absolute starting position within the master MTD device; if * defined as MTDPART_OFS_APPEND, the partition will start where the - * previous one ended; if MTDPART_OFS_NXTBLK, at the next erase block. + * previous one ended; if MTDPART_OFS_NXTBLK, at the next erase block; + * if MTDPART_OFS_RETAIN, consume as much as possible, leaving size + * after the end of partition. * mask_flags: contains flags that have to be masked (removed) from the * master MTD flag set for the corresponding MTD partition. * For example, to force a read-only partition, simply adding @@ -42,6 +44,7 @@ struct mtd_partition { struct nand_ecclayout *ecclayout; /* out of band layout for this partition (NAND only) */ }; +#define MTDPART_OFS_RETAIN (-3) #define MTDPART_OFS_NXTBLK (-2) #define MTDPART_OFS_APPEND (-1) #define MTDPART_SIZ_FULL (0) -- cgit v0.10.2 From 78dd9e3500873edd6005a41f8ba178eacbff64c5 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 6 Jun 2011 18:04:15 +0400 Subject: ts72xx: use MTDPART_OFS_RETAIN for mtd partitioning Instead of specifying a callback for dynamic partitioning, use MTDPART_OFS_RETAIN for reserving a place near the end of flash for RedBoot. Signed-off-by: Dmitry Eremin-Solenikov Cc: Hartley Sweeten Cc: Ryan Mallon Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Artem Bityutskiy diff --git a/arch/arm/mach-ep93xx/ts72xx.c b/arch/arm/mach-ep93xx/ts72xx.c index c2d2cf4..dea42e2 100644 --- a/arch/arm/mach-ep93xx/ts72xx.c +++ b/arch/arm/mach-ep93xx/ts72xx.c @@ -116,8 +116,9 @@ static struct mtd_partition ts72xx_nand_parts[] = { .mask_flags = MTD_WRITEABLE, /* force read-only */ }, { .name = "Linux", - .offset = MTDPART_OFS_APPEND, - .size = 0, /* filled in later */ + .offset = MTDPART_OFS_RETAIN, + .size = TS72XX_REDBOOT_PART_SIZE, + /* leave so much for last partition */ }, { .name = "RedBoot", .offset = MTDPART_OFS_APPEND, @@ -126,28 +127,14 @@ static struct mtd_partition ts72xx_nand_parts[] = { }, }; -static void ts72xx_nand_set_parts(uint64_t size, - struct platform_nand_chip *chip) -{ - /* Factory TS-72xx boards only come with 32MiB or 128MiB NAND options */ - if (size == SZ_32M || size == SZ_128M) { - /* Set the "Linux" partition size */ - ts72xx_nand_parts[1].size = size - TS72XX_REDBOOT_PART_SIZE; - - chip->partitions = ts72xx_nand_parts; - chip->nr_partitions = ARRAY_SIZE(ts72xx_nand_parts); - } else { - pr_warning("Unknown nand disk size:%lluMiB\n", size >> 20); - } -} - static struct platform_nand_data ts72xx_nand_data = { .chip = { .nr_chips = 1, .chip_offset = 0, .chip_delay = 15, .part_probe_types = ts72xx_nand_part_probes, - .set_parts = ts72xx_nand_set_parts, + .partitions = ts72xx_nand_parts, + .nr_partitions = ARRAY_SIZE(ts72xx_nand_parts), }, .ctrl = { .cmd_ctrl = ts72xx_nand_hwcontrol, -- cgit v0.10.2 From 0dc8626a17ab8dea9f1e34c7a5d667f5331b0ddc Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 6 Jun 2011 18:04:16 +0400 Subject: mtd: plat-nand: drop unused fields from platform_nand_data Drop now unused set_parts from struct platform_nand_data. Also, while we are at it, drop long unused priv field from platform_nand_data. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c index ccdb16e..746a723 100644 --- a/drivers/mtd/nand/plat_nand.c +++ b/drivers/mtd/nand/plat_nand.c @@ -109,8 +109,6 @@ static int __devinit plat_nand_probe(struct platform_device *pdev) return 0; } } - if (pdata->chip.set_parts) - pdata->chip.set_parts(data->mtd.size, &pdata->chip); if (pdata->chip.partitions) { data->parts = pdata->chip.partitions; err = mtd_device_register(&data->mtd, data->parts, diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 4a43ffc..0f239e7 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -619,8 +619,6 @@ struct platform_nand_chip { unsigned int options; unsigned int bbt_options; const char **part_probe_types; - void (*set_parts)(uint64_t size, struct platform_nand_chip *chip); - void *priv; }; /* Keep gcc happy */ -- cgit v0.10.2 From bc27ede371b0931086e9cef72e30a58fdedc4709 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Mon, 6 Jun 2011 17:11:34 +0100 Subject: mtd: denali: detect the number of banks before resetting NAND Commit c89eeda810f0ec4f0eee0206ebb79e476df9f83e (mtd: denali: detect the number of banks) introduced runtime detection of the number of banks. However, denali_nand_reset() uses uses denanli_nand_info::max_banks so we need to detect the maximum number of banks before doing the reset. Signed-off-by: Jamie Iles Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index eebdfb5..3984d48 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -1346,6 +1346,7 @@ static void denali_hw_init(struct denali_nand_info *denali) * */ denali->bbtskipbytes = ioread32(denali->flash_reg + SPARE_AREA_SKIP_BYTES); + detect_max_banks(denali); denali_nand_reset(denali); iowrite32(0x0F, denali->flash_reg + RB_PIN_ENABLED); iowrite32(CHIP_EN_DONT_CARE__FLAG, @@ -1356,7 +1357,6 @@ static void denali_hw_init(struct denali_nand_info *denali) /* Should set value for these registers when init */ iowrite32(0, denali->flash_reg + TWO_ROW_ADDR_CYCLES); iowrite32(1, denali->flash_reg + ECC_ENABLE); - detect_max_banks(denali); denali_nand_timing_set(denali); denali_irq_init(denali); } -- cgit v0.10.2 From 0fab028b77d714ad302404b23306cf7adb885223 Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Tue, 7 Jun 2011 03:01:06 -0700 Subject: mtd: pxa3xx_nand: fix nand detection issue When keep_config is set, the detection would goes different routine. That the driver would read out the setting which is set previously by bootloader. While most bootloader keep the irq mask as off, and current driver need all irq default open, keep_config behavior would lead to no irq at all. Signed-off-by: Lei Wen Tested-by: Daniel Mack Cc: stable@kernel.org [2.6.38+] Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index c7da3c8..9fde139 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -813,7 +813,7 @@ static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info) info->page_size = ndcr & NDCR_PAGE_SZ ? 2048 : 512; /* set info fields needed to read id */ info->read_id_bytes = (info->page_size == 2048) ? 4 : 2; - info->reg_ndcr = ndcr; + info->reg_ndcr = ndcr & ~NDCR_INT_MASK; info->cmdset = &default_cmdset; info->ndtr0cs0 = nand_readl(info, NDTR0CS0); @@ -882,7 +882,7 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) struct pxa3xx_nand_info *info = mtd->priv; struct platform_device *pdev = info->pdev; struct pxa3xx_nand_platform_data *pdata = pdev->dev.platform_data; - struct nand_flash_dev pxa3xx_flash_ids[2] = { {NULL,}, {NULL,} }; + struct nand_flash_dev pxa3xx_flash_ids[2], *def = NULL; const struct pxa3xx_nand_flash *f = NULL; struct nand_chip *chip = mtd->priv; uint32_t id = -1; @@ -942,8 +942,10 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) pxa3xx_flash_ids[0].erasesize = f->page_size * f->page_per_block; if (f->flash_width == 16) pxa3xx_flash_ids[0].options = NAND_BUSWIDTH_16; + pxa3xx_flash_ids[1].name = NULL; + def = pxa3xx_flash_ids; KEEP_CONFIG: - if (nand_scan_ident(mtd, 1, pxa3xx_flash_ids)) + if (nand_scan_ident(mtd, 1, def)) return -ENODEV; /* calculate addressing information */ info->col_addr_cycles = (mtd->writesize >= 2048) ? 2 : 1; @@ -954,9 +956,9 @@ KEEP_CONFIG: info->row_addr_cycles = 2; mtd->name = mtd_names[0]; chip->ecc.mode = NAND_ECC_HW; - chip->ecc.size = f->page_size; + chip->ecc.size = info->page_size; - chip->options = (f->flash_width == 16) ? NAND_BUSWIDTH_16 : 0; + chip->options = (info->reg_ndcr & NDCR_DWIDTH_M) ? NAND_BUSWIDTH_16 : 0; chip->options |= NAND_NO_AUTOINCR; chip->options |= NAND_NO_READRDY; -- cgit v0.10.2 From 543e32d5ff165d0d68deedb0e3557478c7c36a4a Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Tue, 7 Jun 2011 03:01:07 -0700 Subject: mtd: pxa3xx_nand: Fix blank page ECC mismatch This bug was introduced in f8155a40 ("mtd: pxa3xx_nand: rework irq logic") and causes the PXA3xx NAND controller fail to operate with NAND flash that has empty pages. According to the comment in this block, the hardware controller will report a double-bit error for empty pages, which can and must be ignored. This patch restores the original behaviour of the driver. Signed-off-by: Daniel Mack Acked-by: Lei Wen Cc: Haojian Zhuang Cc: David Woodhouse Cc: stable@kernel.org [2.6.38+] Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 9fde139..5c3af2f 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -685,6 +685,8 @@ static int pxa3xx_nand_read_page_hwecc(struct mtd_info *mtd, * OOB, ignore such double bit errors */ if (is_buf_blank(buf, mtd->writesize)) + info->retcode = ERR_NONE; + else mtd->ecc_stats.failed++; } -- cgit v0.10.2 From ad274cecdbce18d13075bde3aabe5882802056de Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Wed, 8 Jun 2011 11:42:27 +0300 Subject: mtd: document parse_mtd_partitions Add a kerneldoc comment for the 'parse_mtd_partitions()' function - its behavior has changed recently so it is good idea to have it documented. Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index b7372050..2b71ccb 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -725,8 +725,30 @@ int deregister_mtd_parser(struct mtd_part_parser *p) } EXPORT_SYMBOL_GPL(deregister_mtd_parser); +/* + * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you + * are changing this array! + */ static const char *default_mtd_part_types[] = {"cmdlinepart", NULL}; +/** + * parse_mtd_partitions - parse MTD partitions + * @master: the master partition (describes whole MTD device) + * @types: names of partition parsers to try or %NULL + * @pparts: array of partitions found is returned here + * @origin: MTD device start address (use %0 if unsure) + * + * This function tries to find partition on MTD device @master. It uses MTD + * partition parsers, specified in @types. However, if @types is %NULL, then + * the default list of parsers is used. The default list contains only the + * "cmdlinepart" parser ATM. + * + * This function may return: + * o a negative error code in case of failure + * o zero if no partitions were found + * o a positive number of found partitions, in which case on exit @pparts will + * point to an array containing this number of &struct mtd_info objects. + */ int parse_mtd_partitions(struct mtd_info *master, const char **types, struct mtd_partition **pparts, unsigned long origin) { -- cgit v0.10.2 From 96166056076af59d40e5b5aec5b09611c74cc911 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 7 Jun 2011 22:55:21 +0800 Subject: mtd: ndfc: fix a memory leak in ndfc_remove Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index cb66fd7..70c04ff 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -283,6 +283,7 @@ static int __devexit ndfc_remove(struct platform_device *ofdev) struct ndfc_controller *ndfc = dev_get_drvdata(&ofdev->dev); nand_release(&ndfc->mtd); + kfree(ndfc->mtd.name); return 0; } -- cgit v0.10.2 From 0870066d7e6c85bbe37741137e4c4731501a98e0 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 7 Jun 2011 16:01:54 -0700 Subject: mtd: remove printk's for [kv][mz]alloc failures When a memory allocation fails, the kernel will print out a backtrace automatically. These print statements are unnecessary. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/cmdlinepart.c b/drivers/mtd/cmdlinepart.c index e790f38..be0c121 100644 --- a/drivers/mtd/cmdlinepart.c +++ b/drivers/mtd/cmdlinepart.c @@ -188,10 +188,7 @@ static struct mtd_partition * newpart(char *s, extra_mem_size; parts = kzalloc(alloc_size, GFP_KERNEL); if (!parts) - { - printk(KERN_ERR ERRP "out of memory\n"); return NULL; - } extra_mem = (unsigned char *)(parts + *num_parts); } /* enter this partition (offset will be calculated later if it is zero at this point) */ diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c index d7592e6..c9a31e6 100644 --- a/drivers/mtd/inftlcore.c +++ b/drivers/mtd/inftlcore.c @@ -67,10 +67,8 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) inftl = kzalloc(sizeof(*inftl), GFP_KERNEL); - if (!inftl) { - printk(KERN_WARNING "INFTL: Out of memory for data structures\n"); + if (!inftl) return; - } inftl->mbd.mtd = mtd; inftl->mbd.devnum = -1; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index ba40166..8875d6d 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -1121,10 +1121,8 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) * table. */ this->bbt = kzalloc(len, GFP_KERNEL); - if (!this->bbt) { - printk(KERN_ERR "nand_scan_bbt: Out of memory\n"); + if (!this->bbt) return -ENOMEM; - } /* * If no primary table decriptor is given, scan the device to build a @@ -1146,7 +1144,6 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) len += (len >> this->page_shift) * mtd->oobsize; buf = vmalloc(len); if (!buf) { - printk(KERN_ERR "nand_bbt: Out of memory\n"); kfree(this->bbt); this->bbt = NULL; return -ENOMEM; @@ -1195,10 +1192,8 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) len = (1 << this->bbt_erase_shift); len += (len >> this->page_shift) * mtd->oobsize; buf = kmalloc(len, GFP_KERNEL); - if (!buf) { - printk(KERN_ERR "nand_update_bbt: Out of memory\n"); + if (!buf) return -ENOMEM; - } writeops = md != NULL ? 0x03 : 0x01; @@ -1307,10 +1302,8 @@ static int nand_create_default_bbt_descr(struct nand_chip *this) return -EINVAL; } bd = kzalloc(sizeof(*bd), GFP_KERNEL); - if (!bd) { - printk(KERN_ERR "nand_create_default_bbt_descr: Out of memory\n"); + if (!bd) return -ENOMEM; - } bd->options = this->bbt_options; bd->offs = this->badblockpos; bd->len = (this->options & NAND_BUSWIDTH_16) ? 2 : 1; diff --git a/drivers/mtd/nand/rtc_from4.c b/drivers/mtd/nand/rtc_from4.c index c9f9127..a07da2a 100644 --- a/drivers/mtd/nand/rtc_from4.c +++ b/drivers/mtd/nand/rtc_from4.c @@ -444,7 +444,6 @@ static int rtc_from4_errstat(struct mtd_info *mtd, struct nand_chip *this, len = mtd->writesize; buf = kmalloc(len, GFP_KERNEL); if (!buf) { - printk(KERN_ERR "rtc_from4_errstat: Out of memory!\n"); er_stat = 1; goto out; } diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c index b155666..f3b3239 100644 --- a/drivers/mtd/nftlcore.c +++ b/drivers/mtd/nftlcore.c @@ -67,10 +67,8 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) nftl = kzalloc(sizeof(struct NFTLrecord), GFP_KERNEL); - if (!nftl) { - printk(KERN_WARNING "NFTL: out of memory for data structures\n"); + if (!nftl) return; - } nftl->mbd.mtd = mtd; nftl->mbd.devnum = -1; diff --git a/drivers/mtd/onenand/onenand_bbt.c b/drivers/mtd/onenand/onenand_bbt.c index fc2c16a..09a7d1f 100644 --- a/drivers/mtd/onenand/onenand_bbt.c +++ b/drivers/mtd/onenand/onenand_bbt.c @@ -188,10 +188,8 @@ int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) len = this->chipsize >> (this->erase_shift + 2); /* Allocate memory (2bit per block) and clear the memory bad block table */ bbm->bbt = kzalloc(len, GFP_KERNEL); - if (!bbm->bbt) { - printk(KERN_ERR "onenand_scan_bbt: Out of memory\n"); + if (!bbm->bbt) return -ENOMEM; - } /* Set the bad block position */ bbm->badblockpos = ONENAND_BADBLOCK_POS; diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c index 5cd1897..00d1405 100644 --- a/drivers/mtd/ssfdc.c +++ b/drivers/mtd/ssfdc.c @@ -304,11 +304,8 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) return; ssfdc = kzalloc(sizeof(struct ssfdcr_record), GFP_KERNEL); - if (!ssfdc) { - printk(KERN_WARNING - "SSFDC_RO: out of memory for data structures\n"); + if (!ssfdc) return; - } ssfdc->mbd.mtd = mtd; ssfdc->mbd.devnum = -1; @@ -342,11 +339,8 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) /* Allocate logical block map */ ssfdc->logic_block_map = kmalloc(sizeof(ssfdc->logic_block_map[0]) * ssfdc->map_len, GFP_KERNEL); - if (!ssfdc->logic_block_map) { - printk(KERN_WARNING - "SSFDC_RO: out of memory for data structures\n"); + if (!ssfdc->logic_block_map) goto out_err; - } memset(ssfdc->logic_block_map, 0xff, sizeof(ssfdc->logic_block_map[0]) * ssfdc->map_len); -- cgit v0.10.2 From 3b36013cf9cc1a1da93ad6bb8f6d3b0221f67e42 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Wed, 8 Jun 2011 21:01:37 +0800 Subject: mtd: davinci_nand: remove redundant mtd_device_unregister mtd_device_unregister is done in nand_release(), thus no need to call it in nand_davinci_remove(). Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 0c582ed..70c92a5 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -811,9 +811,6 @@ err_nomem: static int __exit nand_davinci_remove(struct platform_device *pdev) { struct davinci_nand_info *info = platform_get_drvdata(pdev); - int status; - - status = mtd_device_unregister(&info->mtd); spin_lock_irq(&davinci_nand_lock); if (info->chip.ecc.mode == NAND_ECC_HW_SYNDROME) -- cgit v0.10.2 From 3761a6ddacc83e5a6b4482d98fbf212805381486 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Wed, 8 Jun 2011 19:59:49 +0400 Subject: mtd: lart: cleanup: drop HAVE_PARTITIONS Consolidate knowledge about partitions in drivers/mtd/devices/lart.c. Drop all HAVE_PARTITIONS conditionals. Always use partitioning. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c index 772a0ff..3a11ea6 100644 --- a/drivers/mtd/devices/lart.c +++ b/drivers/mtd/devices/lart.c @@ -34,9 +34,6 @@ /* debugging */ //#define LART_DEBUG -/* partition support */ -#define HAVE_PARTITIONS - #include #include #include @@ -44,9 +41,7 @@ #include #include #include -#ifdef HAVE_PARTITIONS #include -#endif #ifndef CONFIG_SA1100_LART #error This is for LART architecture only @@ -598,7 +593,6 @@ static struct mtd_erase_region_info erase_regions[] = { } }; -#ifdef HAVE_PARTITIONS static struct mtd_partition lart_partitions[] = { /* blob */ { @@ -619,7 +613,7 @@ static struct mtd_partition lart_partitions[] = { .size = INITRD_LEN, /* MTDPART_SIZ_FULL */ } }; -#endif +#define NUM_PARTITIONS ARRAY_SIZE(lart_partitions) static int __init lart_flash_init (void) { @@ -668,7 +662,6 @@ static int __init lart_flash_init (void) result,mtd.eraseregions[result].erasesize,mtd.eraseregions[result].erasesize / 1024, result,mtd.eraseregions[result].numblocks); -#ifdef HAVE_PARTITIONS printk ("\npartitions = %d\n", ARRAY_SIZE(lart_partitions)); for (result = 0; result < ARRAY_SIZE(lart_partitions); result++) @@ -681,25 +674,16 @@ static int __init lart_flash_init (void) result,lart_partitions[result].offset, result,lart_partitions[result].size,lart_partitions[result].size / 1024); #endif -#endif -#ifndef HAVE_PARTITIONS - result = mtd_device_register(&mtd, NULL, 0); -#else result = mtd_device_register(&mtd, lart_partitions, ARRAY_SIZE(lart_partitions)); -#endif return (result); } static void __exit lart_flash_exit (void) { -#ifndef HAVE_PARTITIONS - mtd_device_unregister(&mtd); -#else mtd_device_unregister(&mtd); -#endif } module_init (lart_flash_init); -- cgit v0.10.2 From 1c4c215cbdcbfd08183d82b2953591cd00564422 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Fri, 25 Mar 2011 22:26:25 +0300 Subject: mtd: add new API for handling MTD registration Lots (nearly all) mtd drivers contain nearly the similar code that calls parse_mtd_partitions, provides some platform-default values, if parsing fails, and registers mtd device. This is an aim to provide single implementation of this scenario: mtd_device_parse_register() which will handle all this parsing and defaults. Artem: amended comments Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index c510aff..1326747 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -452,6 +452,64 @@ int mtd_device_register(struct mtd_info *master, EXPORT_SYMBOL_GPL(mtd_device_register); /** + * mtd_device_parse_register - parse partitions and register an MTD device. + * + * @mtd: the MTD device to register + * @types: the list of MTD partition probes to try, see + * 'parse_mtd_partitions()' for more information + * @origin: start address of MTD device, %0 unless you are sure you need this. + * @parts: fallback partition information to register, if parsing fails; + * only valid if %nr_parts > %0 + * @nr_parts: the number of partitions in parts, if zero then the full + * MTD device is registered if no partition info is found + * + * This function aggregates MTD partitions parsing (done by + * 'parse_mtd_partitions()') and MTD device and partitions registering. It + * basically follows the most common pattern found in many MTD drivers: + * + * * It first tries to probe partitions on MTD device @mtd using parsers + * specified in @types (if @types is %NULL, then the default list of parsers + * is used, see 'parse_mtd_partitions()' for more information). If none are + * found this functions tries to fallback to information specified in + * @parts/@nr_parts. + * * If any parititioning info was found, this function registers the found + * partitions. + * * If no partitions were found this function just registers the MTD device + * @mtd and exits. + * + * Returns zero in case of success and a negative error code in case of failure. + */ +int mtd_device_parse_register(struct mtd_info *mtd, const char **types, + unsigned long origin, + const struct mtd_partition *parts, + int nr_parts) +{ + int err; + struct mtd_partition *real_parts; + + err = parse_mtd_partitions(mtd, types, &real_parts, origin); + if (err <= 0 && nr_parts) { + real_parts = kmemdup(parts, sizeof(*parts) * nr_parts, + GFP_KERNEL); + err = nr_parts; + if (!parts) + err = -ENOMEM; + } + + if (err > 0) { + err = add_mtd_partitions(mtd, real_parts, err); + kfree(real_parts); + } else if (err == 0) { + err = add_mtd_device(mtd); + if (err == 1) + err = -ENODEV; + } + + return err; +} +EXPORT_SYMBOL_GPL(mtd_device_parse_register); + +/** * mtd_device_unregister - unregister an existing MTD device. * * @master: the MTD device to unregister. This will unregister both the master diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 2541fb8..d28a241 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -327,6 +327,11 @@ struct mtd_partition; extern int mtd_device_register(struct mtd_info *master, const struct mtd_partition *parts, int nr_parts); +extern int mtd_device_parse_register(struct mtd_info *mtd, + const char **part_probe_types, + unsigned long origin, + const struct mtd_partition *defparts, + int defnr_parts); extern int mtd_device_unregister(struct mtd_info *master); extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num); extern int __get_mtd_device(struct mtd_info *mtd); -- cgit v0.10.2 From 81939afce261694f8e91a71e2cc7c817c13c57fd Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:23 +0400 Subject: mtd: sst25l.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/sst25l.c b/drivers/mtd/devices/sst25l.c index 52eb92e..44a8b40 100644 --- a/drivers/mtd/devices/sst25l.c +++ b/drivers/mtd/devices/sst25l.c @@ -52,8 +52,6 @@ struct sst25l_flash { struct spi_device *spi; struct mutex lock; struct mtd_info mtd; - - int partitioned; }; struct flash_info { @@ -381,8 +379,6 @@ static int __devinit sst25l_probe(struct spi_device *spi) struct sst25l_flash *flash; struct flash_platform_data *data; int ret, i; - struct mtd_partition *parts = NULL; - int nr_parts = 0; flash_info = sst25l_match_device(spi); if (!flash_info) @@ -423,31 +419,10 @@ static int __devinit sst25l_probe(struct spi_device *spi) flash->mtd.numeraseregions); - nr_parts = parse_mtd_partitions(&flash->mtd, NULL, &parts, 0); - - if (nr_parts <= 0 && data && data->parts) { - parts = data->parts; - nr_parts = data->nr_parts; - } - - if (nr_parts > 0) { - for (i = 0; i < nr_parts; i++) { - DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = " - "{.name = %s, .offset = 0x%llx, " - ".size = 0x%llx (%lldKiB) }\n", - i, parts[i].name, - (long long)parts[i].offset, - (long long)parts[i].size, - (long long)(parts[i].size >> 10)); - } - - flash->partitioned = 1; - return mtd_device_register(&flash->mtd, parts, - nr_parts); - } - - ret = mtd_device_register(&flash->mtd, NULL, 0); - if (ret == 1) { + ret = mtd_device_parse_register(&flash->mtd, NULL, 0, + data ? data->parts : NULL, + data ? data->nr_parts : 0); + if (ret) { kfree(flash); dev_set_drvdata(&spi->dev, NULL); return -ENODEV; -- cgit v0.10.2 From cd3aafd0bd3ad383fd43196bc8dcac2edfec95c2 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:30 +0400 Subject: mtd: bfin-async-flash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/bfin-async-flash.c b/drivers/mtd/maps/bfin-async-flash.c index 67815ee..6d6b2b5 100644 --- a/drivers/mtd/maps/bfin-async-flash.c +++ b/drivers/mtd/maps/bfin-async-flash.c @@ -41,7 +41,6 @@ struct async_state { uint32_t flash_ambctl0, flash_ambctl1; uint32_t save_ambctl0, save_ambctl1; unsigned long irq_flags; - struct mtd_partition *parts; }; static void switch_to_flash(struct async_state *state) @@ -165,18 +164,8 @@ static int __devinit bfin_flash_probe(struct platform_device *pdev) return -ENXIO; } - ret = parse_mtd_partitions(state->mtd, part_probe_types, &pdata->parts, 0); - if (ret > 0) { - pr_devinit(KERN_NOTICE DRIVER_NAME ": Using commandline partition definition\n"); - mtd_device_register(state->mtd, pdata->parts, ret); - state->parts = pdata->parts; - } else if (pdata->nr_parts) { - pr_devinit(KERN_NOTICE DRIVER_NAME ": Using board partition definition\n"); - mtd_device_register(state->mtd, pdata->parts, pdata->nr_parts); - } else { - pr_devinit(KERN_NOTICE DRIVER_NAME ": no partition info available, registering whole flash at once\n"); - mtd_device_register(state->mtd, NULL, 0); - } + mtd_device_parse_register(state->mtd, part_probe_types, 0, + pdata->parts, pdata->nr_parts); platform_set_drvdata(pdev, state); @@ -188,7 +177,6 @@ static int __devexit bfin_flash_remove(struct platform_device *pdev) struct async_state *state = platform_get_drvdata(pdev); gpio_free(state->enet_flash_pin); mtd_device_unregister(state->mtd); - kfree(state->parts); map_destroy(state->mtd); kfree(state); return 0; -- cgit v0.10.2 From 3d0e9db409909a0259fa005fee81a7c639bd645a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:35 +0400 Subject: mtd: dc21285.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/dc21285.c b/drivers/mtd/maps/dc21285.c index 7a9e198..f43b365 100644 --- a/drivers/mtd/maps/dc21285.c +++ b/drivers/mtd/maps/dc21285.c @@ -145,14 +145,10 @@ static struct map_info dc21285_map = { /* Partition stuff */ -static struct mtd_partition *dc21285_parts; static const char *probes[] = { "RedBoot", "cmdlinepart", NULL }; static int __init init_dc21285(void) { - - int nrparts; - /* Determine bankwidth */ switch (*CSR_SA110_CNTL & (3<<14)) { case SA110_CNTL_ROMWIDTH_8: @@ -200,8 +196,7 @@ static int __init init_dc21285(void) dc21285_mtd->owner = THIS_MODULE; - nrparts = parse_mtd_partitions(dc21285_mtd, probes, &dc21285_parts, 0); - mtd_device_register(dc21285_mtd, dc21285_parts, nrparts); + mtd_device_parse_register(dc21285_mtd, probes, 0, NULL, 0); if(machine_is_ebsa285()) { /* @@ -224,8 +219,6 @@ static int __init init_dc21285(void) static void __exit cleanup_dc21285(void) { mtd_device_unregister(dc21285_mtd); - if (dc21285_parts) - kfree(dc21285_parts); map_destroy(dc21285_mtd); iounmap(dc21285_map.virt); } -- cgit v0.10.2 From 534e4928ad672a319c29b9f0c0593ad16766de53 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:41 +0400 Subject: mtd: gpio-addr-flash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/gpio-addr-flash.c b/drivers/mtd/maps/gpio-addr-flash.c index 7568c5f..1ec66f0 100644 --- a/drivers/mtd/maps/gpio-addr-flash.c +++ b/drivers/mtd/maps/gpio-addr-flash.c @@ -187,7 +187,6 @@ static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL }; */ static int __devinit gpio_flash_probe(struct platform_device *pdev) { - int nr_parts; size_t i, arr_size; struct physmap_flash_data *pdata; struct resource *memory; @@ -252,20 +251,9 @@ static int __devinit gpio_flash_probe(struct platform_device *pdev) return -ENXIO; } - nr_parts = parse_mtd_partitions(state->mtd, part_probe_types, - &pdata->parts, 0); - if (nr_parts > 0) { - pr_devinit(KERN_NOTICE PFX "Using commandline partition definition\n"); - kfree(pdata->parts); - } else if (pdata->nr_parts) { - pr_devinit(KERN_NOTICE PFX "Using board partition definition\n"); - nr_parts = pdata->nr_parts; - } else { - pr_devinit(KERN_NOTICE PFX "no partition info available, registering whole flash at once\n"); - nr_parts = 0; - } - mtd_device_register(state->mtd, pdata->parts, nr_parts); + mtd_device_parse_register(state->mtd, part_probe_types, 0, + pdata->parts, pdata->nr_parts); return 0; } -- cgit v0.10.2 From 8db2a08ee469c1fcad5354c1144a673d88434424 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:42 +0400 Subject: mtd: h720x-flash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/h720x-flash.c b/drivers/mtd/maps/h720x-flash.c index f331a2c..49c1418 100644 --- a/drivers/mtd/maps/h720x-flash.c +++ b/drivers/mtd/maps/h720x-flash.c @@ -58,16 +58,11 @@ static struct mtd_partition h720x_partitions[] = { #define NUM_PARTITIONS ARRAY_SIZE(h720x_partitions) -static int nr_mtd_parts; -static struct mtd_partition *mtd_parts; /* * Initialize FLASH support */ static int __init h720x_mtd_init(void) { - - char *part_type = NULL; - h720x_map.virt = ioremap(h720x_map.phys, h720x_map.size); if (!h720x_map.virt) { @@ -90,16 +85,8 @@ static int __init h720x_mtd_init(void) if (mymtd) { mymtd->owner = THIS_MODULE; - nr_mtd_parts = parse_mtd_partitions(mymtd, NULL, &mtd_parts, 0); - if (nr_mtd_parts > 0) - part_type = "command line"; - if (nr_mtd_parts <= 0) { - mtd_parts = h720x_partitions; - nr_mtd_parts = NUM_PARTITIONS; - part_type = "builtin"; - } - printk(KERN_INFO "Using %s partition table\n", part_type); - mtd_device_register(mymtd, mtd_parts, nr_mtd_parts); + mtd_device_parse_register(mymtd, NULL, 0, + h720x_partitions, NUM_PARTITIONS); return 0; } @@ -118,10 +105,6 @@ static void __exit h720x_mtd_cleanup(void) map_destroy(mymtd); } - /* Free partition info, if commandline partition was used */ - if (mtd_parts && (mtd_parts != h720x_partitions)) - kfree (mtd_parts); - if (h720x_map.virt) { iounmap((void *)h720x_map.virt); h720x_map.virt = 0; -- cgit v0.10.2 From 5003403b87283a5e304e0248918ef678dbd24d59 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:44 +0400 Subject: mtd: impa7.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Artem: rename static_partitions to make lines shorter and align the way this driver prefers. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/impa7.c b/drivers/mtd/maps/impa7.c index 2d45a48..f47aedb 100644 --- a/drivers/mtd/maps/impa7.c +++ b/drivers/mtd/maps/impa7.c @@ -49,7 +49,7 @@ static struct map_info impa7_map[NUM_FLASHBANKS] = { /* * MTD partitioning stuff */ -static struct mtd_partition static_partitions[] = +static struct mtd_partition partitions[] = { { .name = "FileSystem", @@ -58,15 +58,10 @@ static struct mtd_partition static_partitions[] = }, }; -static int mtd_parts_nb[NUM_FLASHBANKS]; -static struct mtd_partition *mtd_parts[NUM_FLASHBANKS]; - - static int __init init_impa7(void) { static const char *rom_probe_types[] = PROBETYPES; const char **type; - const char *part_type = 0; int i; static struct { u_long addr; u_long size; } pt[NUM_FLASHBANKS] = { { WINDOW_ADDR0, WINDOW_SIZE0 }, @@ -96,23 +91,9 @@ static int __init init_impa7(void) if (impa7_mtd[i]) { impa7_mtd[i]->owner = THIS_MODULE; devicesfound++; - mtd_parts_nb[i] = parse_mtd_partitions(impa7_mtd[i], - NULL, - &mtd_parts[i], - 0); - if (mtd_parts_nb[i] > 0) { - part_type = "command line"; - } else { - mtd_parts[i] = static_partitions; - mtd_parts_nb[i] = ARRAY_SIZE(static_partitions); - part_type = "static"; - } - - printk(KERN_NOTICE MSG_PREFIX - "using %s partition definition\n", - part_type); - mtd_device_register(impa7_mtd[i], - mtd_parts[i], mtd_parts_nb[i]); + mtd_device_parse_register(impa7_mtd[i], NULL, 0, + partitions, + ARRAY_SIZE(partitions)); } else iounmap((void *)impa7_map[i].virt); -- cgit v0.10.2 From ba6bead4469bec8a66f1764106f23890b2a267e2 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:45 +0400 Subject: mtd: intel_vr_nor.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/intel_vr_nor.c b/drivers/mtd/maps/intel_vr_nor.c index fd612c7..08c2396 100644 --- a/drivers/mtd/maps/intel_vr_nor.c +++ b/drivers/mtd/maps/intel_vr_nor.c @@ -44,7 +44,6 @@ struct vr_nor_mtd { void __iomem *csr_base; struct map_info map; struct mtd_info *info; - int nr_parts; struct pci_dev *dev; }; @@ -71,12 +70,9 @@ static void __devexit vr_nor_destroy_partitions(struct vr_nor_mtd *p) static int __devinit vr_nor_init_partitions(struct vr_nor_mtd *p) { - struct mtd_partition *parts; - /* register the flash bank */ /* partition the flash bank */ - p->nr_parts = parse_mtd_partitions(p->info, NULL, &parts, 0); - return mtd_device_register(p->info, parts, p->nr_parts); + return mtd_device_parse_register(p->info, NULL, 0, NULL, 0); } static void __devexit vr_nor_destroy_mtd_setup(struct vr_nor_mtd *p) -- cgit v0.10.2 From 200b8777ce270b491affb2bd81192f78f2d46213 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:46 +0400 Subject: mtd: ixp2000.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/ixp2000.c b/drivers/mtd/maps/ixp2000.c index 1594a80..437fcd2 100644 --- a/drivers/mtd/maps/ixp2000.c +++ b/drivers/mtd/maps/ixp2000.c @@ -38,7 +38,6 @@ struct ixp2000_flash_info { struct mtd_info *mtd; struct map_info map; - struct mtd_partition *partitions; struct resource *res; }; @@ -125,8 +124,6 @@ static int ixp2000_flash_remove(struct platform_device *dev) if (info->map.map_priv_1) iounmap((void *) info->map.map_priv_1); - kfree(info->partitions); - if (info->res) { release_resource(info->res); kfree(info->res); @@ -229,13 +226,7 @@ static int ixp2000_flash_probe(struct platform_device *dev) } info->mtd->owner = THIS_MODULE; - err = parse_mtd_partitions(info->mtd, probes, &info->partitions, 0); - if (err > 0) { - err = mtd_device_register(info->mtd, info->partitions, err); - if(err) - dev_err(&dev->dev, "Could not parse partitions\n"); - } - + err = mtd_device_parse_register(info->mtd, probes, 0, NULL, 0); if (err) goto Error; -- cgit v0.10.2 From bc413f11ddf2c692cc533f474d28a154abe4541f Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:47 +0400 Subject: mtd: ixp4xx.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/ixp4xx.c b/drivers/mtd/maps/ixp4xx.c index 155b219..3040901 100644 --- a/drivers/mtd/maps/ixp4xx.c +++ b/drivers/mtd/maps/ixp4xx.c @@ -145,7 +145,6 @@ static void ixp4xx_write16(struct map_info *map, map_word d, unsigned long adr) struct ixp4xx_flash_info { struct mtd_info *mtd; struct map_info map; - struct mtd_partition *partitions; struct resource *res; }; @@ -168,8 +167,6 @@ static int ixp4xx_flash_remove(struct platform_device *dev) if (info->map.virt) iounmap(info->map.virt); - kfree(info->partitions); - if (info->res) { release_resource(info->res); kfree(info->res); @@ -185,8 +182,6 @@ static int ixp4xx_flash_probe(struct platform_device *dev) { struct flash_platform_data *plat = dev->dev.platform_data; struct ixp4xx_flash_info *info; - const char *part_type = NULL; - int nr_parts = 0; int err = -1; if (!plat) @@ -252,28 +247,12 @@ static int ixp4xx_flash_probe(struct platform_device *dev) /* Use the fast version */ info->map.write = ixp4xx_write16; - nr_parts = parse_mtd_partitions(info->mtd, probes, &info->partitions, - dev->resource->start); - if (nr_parts > 0) { - part_type = "dynamic"; - } else { - info->partitions = plat->parts; - nr_parts = plat->nr_parts; - part_type = "static"; - } - if (nr_parts == 0) - printk(KERN_NOTICE "IXP4xx flash: no partition info " - "available, registering whole flash\n"); - else - printk(KERN_NOTICE "IXP4xx flash: using %s partition " - "definition\n", part_type); - - err = mtd_device_register(info->mtd, info->partitions, nr_parts); - if (err) + err = mtd_device_parse_register(info->mtd, probes, dev->resource->start, + plat->parts, plat->nr_parts); + if (err) { printk(KERN_ERR "Could not parse partitions\n"); - - if (err) goto Error; + } return 0; -- cgit v0.10.2 From ca97dec2ab5c87e9fbdf7e882e1820004a3966fa Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:49 +0400 Subject: mtd: lantiq-flash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/lantiq-flash.c b/drivers/mtd/maps/lantiq-flash.c index 57ea3fe..f750784 100644 --- a/drivers/mtd/maps/lantiq-flash.c +++ b/drivers/mtd/maps/lantiq-flash.c @@ -112,9 +112,7 @@ ltq_mtd_probe(struct platform_device *pdev) { struct physmap_flash_data *ltq_mtd_data = dev_get_platdata(&pdev->dev); struct ltq_mtd *ltq_mtd; - struct mtd_partition *parts; struct resource *res; - int nr_parts = 0; struct cfi_private *cfi; int err; @@ -170,16 +168,8 @@ ltq_mtd_probe(struct platform_device *pdev) cfi->addr_unlock1 ^= 1; cfi->addr_unlock2 ^= 1; - nr_parts = parse_mtd_partitions(ltq_mtd->mtd, NULL, &parts, 0); - if (nr_parts > 0) { - dev_info(&pdev->dev, - "using %d partitions from cmdline", nr_parts); - } else { - nr_parts = ltq_mtd_data->nr_parts; - parts = ltq_mtd_data->parts; - } - - err = add_mtd_partitions(ltq_mtd->mtd, parts, nr_parts); + err = mtd_device_parse_register(ltq_mtd->mtd, NULL, 0, + ltq_mtd_data->parts, ltq_mtd_data->nr_parts); if (err) { dev_err(&pdev->dev, "failed to add partitions\n"); goto err_destroy; -- cgit v0.10.2 From 6e6e44c8bf73cdbd3600f18cb195fc965c0f1b45 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:50 +0400 Subject: mtd: latch-addr-flash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/latch-addr-flash.c b/drivers/mtd/maps/latch-addr-flash.c index 09cf704..119baa7 100644 --- a/drivers/mtd/maps/latch-addr-flash.c +++ b/drivers/mtd/maps/latch-addr-flash.c @@ -33,9 +33,6 @@ struct latch_addr_flash_info { /* cache; could be found out of res */ unsigned long win_mask; - int nr_parts; - struct mtd_partition *parts; - spinlock_t lock; }; @@ -110,8 +107,6 @@ static int latch_addr_flash_remove(struct platform_device *dev) latch_addr_data = dev->dev.platform_data; if (info->mtd != NULL) { - if (info->nr_parts) - kfree(info->parts); mtd_device_unregister(info->mtd); map_destroy(info->mtd); } @@ -204,20 +199,8 @@ static int __devinit latch_addr_flash_probe(struct platform_device *dev) } info->mtd->owner = THIS_MODULE; - err = parse_mtd_partitions(info->mtd, NULL, &info->parts, 0); - if (err > 0) { - mtd_device_register(info->mtd, info->parts, err); - return 0; - } - if (latch_addr_data->nr_parts) { - pr_notice("Using latch-addr-flash partition information\n"); - mtd_device_register(info->mtd, - latch_addr_data->parts, - latch_addr_data->nr_parts); - return 0; - } - - mtd_device_register(info->mtd, NULL, 0); + mtd_device_parse_register(info->mtd, NULL, 0, + latch_addr_data->parts, latch_addr_data->nr_parts); return 0; iounmap: -- cgit v0.10.2 From d45fd1218897b05dfa977a49f72e6f7bdc3e2471 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:58 +0400 Subject: mtd: physmap.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Artem: tweaked the patch Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c index 2174d10..66e8200 100644 --- a/drivers/mtd/maps/physmap.c +++ b/drivers/mtd/maps/physmap.c @@ -27,8 +27,6 @@ struct physmap_flash_info { struct mtd_info *mtd[MAX_RESOURCES]; struct mtd_info *cmtd; struct map_info map[MAX_RESOURCES]; - int nr_parts; - struct mtd_partition *parts; }; static int physmap_flash_remove(struct platform_device *dev) @@ -46,8 +44,6 @@ static int physmap_flash_remove(struct platform_device *dev) if (info->cmtd) { mtd_device_unregister(info->cmtd); - if (info->nr_parts) - kfree(info->parts); if (info->cmtd != info->mtd[0]) mtd_concat_destroy(info->cmtd); } @@ -175,23 +171,8 @@ static int physmap_flash_probe(struct platform_device *dev) if (err) goto err_out; - err = parse_mtd_partitions(info->cmtd, part_probe_types, - &info->parts, 0); - if (err > 0) { - mtd_device_register(info->cmtd, info->parts, err); - info->nr_parts = err; - return 0; - } - - if (physmap_data->nr_parts) { - printk(KERN_NOTICE "Using physmap partition information\n"); - mtd_device_register(info->cmtd, physmap_data->parts, - physmap_data->nr_parts); - return 0; - } - - mtd_device_register(info->cmtd, NULL, 0); - + mtd_device_parse_register(info->cmtd, part_probe_types, 0, + physmap_data->parts, physmap_data->nr_parts); return 0; err_out: -- cgit v0.10.2 From 74fb3ab9330ee4dd1a3ddf19cd0f3ef1202376d9 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:01 +0400 Subject: mtd: plat-ram.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/plat-ram.c b/drivers/mtd/maps/plat-ram.c index 9ca1ecc..94f5534 100644 --- a/drivers/mtd/maps/plat-ram.c +++ b/drivers/mtd/maps/plat-ram.c @@ -44,8 +44,6 @@ struct platram_info { struct device *dev; struct mtd_info *mtd; struct map_info map; - struct mtd_partition *partitions; - bool free_partitions; struct resource *area; struct platdata_mtd_ram *pdata; }; @@ -95,10 +93,6 @@ static int platram_remove(struct platform_device *pdev) if (info->mtd) { mtd_device_unregister(info->mtd); - if (info->partitions) { - if (info->free_partitions) - kfree(info->partitions); - } map_destroy(info->mtd); } @@ -228,21 +222,8 @@ static int platram_probe(struct platform_device *pdev) /* check to see if there are any available partitions, or wether * to add this device whole */ - if (!pdata->nr_partitions) { - /* try to probe using the supplied probe type */ - if (pdata->probes) { - err = parse_mtd_partitions(info->mtd, pdata->probes, - &info->partitions, 0); - info->free_partitions = 1; - if (err > 0) - err = mtd_device_register(info->mtd, - info->partitions, err); - } - } - /* use the static mapping */ - else - err = mtd_device_register(info->mtd, pdata->partitions, - pdata->nr_partitions); + err = mtd_device_parse_register(info->mtd, pdata->probes, 0, + pdata->partitions, pdata->nr_partitions); if (!err) dev_info(&pdev->dev, "registered mtd device\n"); -- cgit v0.10.2 From 6fcdc92fce81eadcee262a7a66bf3207314fab87 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:03 +0400 Subject: mtd: pxa2xx-flash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c index 7ae137d..411a17d 100644 --- a/drivers/mtd/maps/pxa2xx-flash.c +++ b/drivers/mtd/maps/pxa2xx-flash.c @@ -41,8 +41,6 @@ static void pxa2xx_map_inval_cache(struct map_info *map, unsigned long from, } struct pxa2xx_flash_info { - struct mtd_partition *parts; - int nr_parts; struct mtd_info *mtd; struct map_info map; }; @@ -55,9 +53,7 @@ static int __devinit pxa2xx_flash_probe(struct platform_device *pdev) { struct flash_platform_data *flash = pdev->dev.platform_data; struct pxa2xx_flash_info *info; - struct mtd_partition *parts; struct resource *res; - int ret = 0; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) @@ -71,8 +67,6 @@ static int __devinit pxa2xx_flash_probe(struct platform_device *pdev) info->map.bankwidth = flash->width; info->map.phys = res->start; info->map.size = resource_size(res); - info->parts = flash->parts; - info->nr_parts = flash->nr_parts; info->map.virt = ioremap(info->map.phys, info->map.size); if (!info->map.virt) { @@ -104,18 +98,7 @@ static int __devinit pxa2xx_flash_probe(struct platform_device *pdev) } info->mtd->owner = THIS_MODULE; - ret = parse_mtd_partitions(info->mtd, probes, &parts, 0); - - if (ret > 0) { - info->nr_parts = ret; - info->parts = parts; - } - - if (!info->nr_parts) - printk("Registering %s as whole device\n", - info->map.name); - - mtd_device_register(info->mtd, info->parts, info->nr_parts); + mtd_device_parse_register(info->mtd, probes, 0, NULL, 0); platform_set_drvdata(pdev, info); return 0; @@ -133,7 +116,6 @@ static int __devexit pxa2xx_flash_remove(struct platform_device *dev) iounmap(info->map.virt); if (info->map.cached) iounmap(info->map.cached); - kfree(info->parts); kfree(info); return 0; } -- cgit v0.10.2 From c77d8092c761bc0ee219fd869e6cde876e2b7aa4 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:04 +0400 Subject: mtd: rbtx4939-flash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/rbtx4939-flash.c b/drivers/mtd/maps/rbtx4939-flash.c index 5d15b6b..0237f19 100644 --- a/drivers/mtd/maps/rbtx4939-flash.c +++ b/drivers/mtd/maps/rbtx4939-flash.c @@ -25,8 +25,6 @@ struct rbtx4939_flash_info { struct mtd_info *mtd; struct map_info map; - int nr_parts; - struct mtd_partition *parts; }; static int rbtx4939_flash_remove(struct platform_device *dev) @@ -41,8 +39,6 @@ static int rbtx4939_flash_remove(struct platform_device *dev) if (info->mtd) { struct rbtx4939_flash_data *pdata = dev->dev.platform_data; - if (info->nr_parts) - kfree(info->parts); mtd_device_unregister(info->mtd); map_destroy(info->mtd); } @@ -106,20 +102,11 @@ static int rbtx4939_flash_probe(struct platform_device *dev) info->mtd->owner = THIS_MODULE; if (err) goto err_out; - err = parse_mtd_partitions(info->mtd, NULL, &info->parts, 0); - if (err > 0) { - mtd_device_register(info->mtd, info->parts, err); - info->nr_parts = err; - return 0; - } + err = mtd_device_parse_register(info->mtd, NULL, 0, + pdata->parts, pdata->nr_parts); - if (pdata->nr_parts) { - pr_notice("Using rbtx4939 partition information\n"); - mtd_device_register(info->mtd, pdata->parts, pdata->nr_parts); - return 0; - } - - mtd_device_register(info->mtd, NULL, 0); + if (err) + goto err_out; return 0; err_out: -- cgit v0.10.2 From 769dc431869a021b85feca607c7800c59822de9c Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:06 +0400 Subject: mtd: sa1100-flash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c index a9b5e0e..fa9c0a9 100644 --- a/drivers/mtd/maps/sa1100-flash.c +++ b/drivers/mtd/maps/sa1100-flash.c @@ -131,10 +131,8 @@ struct sa_subdev_info { }; struct sa_info { - struct mtd_partition *parts; struct mtd_info *mtd; int num_subdev; - unsigned int nr_parts; struct sa_subdev_info subdev[0]; }; @@ -231,8 +229,6 @@ static void sa1100_destroy(struct sa_info *info, struct flash_platform_data *pla mtd_concat_destroy(info->mtd); } - kfree(info->parts); - for (i = info->num_subdev - 1; i >= 0; i--) sa1100_destroy_subdev(&info->subdev[i]); kfree(info); @@ -341,10 +337,8 @@ static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL }; static int __devinit sa1100_mtd_probe(struct platform_device *pdev) { struct flash_platform_data *plat = pdev->dev.platform_data; - struct mtd_partition *parts; - const char *part_type = NULL; struct sa_info *info; - int err, nr_parts = 0; + int err; if (!plat) return -ENODEV; @@ -358,26 +352,8 @@ static int __devinit sa1100_mtd_probe(struct platform_device *pdev) /* * Partition selection stuff. */ - nr_parts = parse_mtd_partitions(info->mtd, part_probes, &parts, 0); - if (nr_parts > 0) { - info->parts = parts; - part_type = "dynamic"; - } else { - parts = plat->parts; - nr_parts = plat->nr_parts; - part_type = "static"; - } - - if (nr_parts == 0) - printk(KERN_NOTICE "SA1100 flash: no partition info " - "available, registering whole flash\n"); - else - printk(KERN_NOTICE "SA1100 flash: using %s partition " - "definition\n", part_type); - - mtd_device_register(info->mtd, parts, nr_parts); - - info->nr_parts = nr_parts; + mtd_device_parse_register(info->mtd, part_probes, 0, + plat->parts, plat->nr_parts); platform_set_drvdata(pdev, info); err = 0; -- cgit v0.10.2 From 7029eef8ba6ebf96c18c4b3138c35fcd1342a80a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:12 +0400 Subject: mtd: solutionengine.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/solutionengine.c b/drivers/mtd/maps/solutionengine.c index cbf6bad..496c407 100644 --- a/drivers/mtd/maps/solutionengine.c +++ b/drivers/mtd/maps/solutionengine.c @@ -19,8 +19,6 @@ static struct mtd_info *flash_mtd; static struct mtd_info *eprom_mtd; -static struct mtd_partition *parsed_parts; - struct map_info soleng_eprom_map = { .name = "Solution Engine EPROM", .size = 0x400000, @@ -51,12 +49,14 @@ static struct mtd_partition superh_se_partitions[] = { .size = MTDPART_SIZ_FULL, } }; +#define NUM_PARTITIONS ARRAY_SIZE(superh_se_partitions) +#else +#define superh_se_partitions NULL +#define NUM_PARTITIONS 0 #endif /* CONFIG_MTD_SUPERH_RESERVE */ static int __init init_soleng_maps(void) { - int nr_parts = 0; - /* First probe at offset 0 */ soleng_flash_map.phys = 0; soleng_flash_map.virt = (void __iomem *)P2SEGADDR(0); @@ -92,21 +92,8 @@ static int __init init_soleng_maps(void) mtd_device_register(eprom_mtd, NULL, 0); } - nr_parts = parse_mtd_partitions(flash_mtd, probes, &parsed_parts, 0); - -#ifdef CONFIG_MTD_SUPERH_RESERVE - if (nr_parts <= 0) { - printk(KERN_NOTICE "Using configured partition at 0x%08x.\n", - CONFIG_MTD_SUPERH_RESERVE); - parsed_parts = superh_se_partitions; - nr_parts = sizeof(superh_se_partitions)/sizeof(*parsed_parts); - } -#endif /* CONFIG_MTD_SUPERH_RESERVE */ - - if (nr_parts > 0) - mtd_device_register(flash_mtd, parsed_parts, nr_parts); - else - mtd_device_register(flash_mtd, NULL, 0); + mtd_device_parse_register(flash_mtd, probes, 0, + superh_se_partitions, NUM_PARTITIONS); return 0; } @@ -118,10 +105,7 @@ static void __exit cleanup_soleng_maps(void) map_destroy(eprom_mtd); } - if (parsed_parts) - mtd_device_unregister(flash_mtd); - else - mtd_device_unregister(flash_mtd); + mtd_device_unregister(flash_mtd); map_destroy(flash_mtd); } -- cgit v0.10.2 From e062e2f52fed5bcf65b3228e991771a4a6030d85 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:20 +0400 Subject: mtd: wr_sbc82xx_flash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Artem: some tweaks, split one very long line while on it. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/wr_sbc82xx_flash.c b/drivers/mtd/maps/wr_sbc82xx_flash.c index 901ce96..aa7e0cb 100644 --- a/drivers/mtd/maps/wr_sbc82xx_flash.c +++ b/drivers/mtd/maps/wr_sbc82xx_flash.c @@ -20,7 +20,6 @@ #include static struct mtd_info *sbcmtd[3]; -static struct mtd_partition *sbcmtd_parts[3]; struct map_info sbc82xx_flash_map[3] = { {.name = "Boot flash"}, @@ -101,6 +100,7 @@ static int __init init_sbc82xx_flash(void) for (i=0; i<3; i++) { int8_t flashcs[3] = { 0, 6, 1 }; int nr_parts; + struct mtd_partition *defparts; printk(KERN_NOTICE "PowerQUICC II %s (%ld MiB on CS%d", sbc82xx_flash_map[i].name, @@ -113,7 +113,8 @@ static int __init init_sbc82xx_flash(void) } printk(" at %08lx)\n", sbc82xx_flash_map[i].phys); - sbc82xx_flash_map[i].virt = ioremap(sbc82xx_flash_map[i].phys, sbc82xx_flash_map[i].size); + sbc82xx_flash_map[i].virt = ioremap(sbc82xx_flash_map[i].phys, + sbc82xx_flash_map[i].size); if (!sbc82xx_flash_map[i].virt) { printk("Failed to ioremap\n"); @@ -129,24 +130,20 @@ static int __init init_sbc82xx_flash(void) sbcmtd[i]->owner = THIS_MODULE; - nr_parts = parse_mtd_partitions(sbcmtd[i], part_probes, - &sbcmtd_parts[i], 0); - if (nr_parts > 0) { - mtd_device_register(sbcmtd[i], sbcmtd_parts[i], - nr_parts); - continue; - } - /* No partitioning detected. Use default */ if (i == 2) { - mtd_device_register(sbcmtd[i], NULL, 0); + defparts = NULL; + nr_parts = 0; } else if (i == bigflash) { - mtd_device_register(sbcmtd[i], bigflash_parts, - ARRAY_SIZE(bigflash_parts)); + defparts = bigflash_parts; + nr_parts = ARRAY_SIZE(bigflash_parts); } else { - mtd_device_register(sbcmtd[i], smallflash_parts, - ARRAY_SIZE(smallflash_parts)); + defparts = smallflash_parts; + nr_parts = ARRAY_SIZE(smallflash_parts); } + + mtd_device_parse_register(sbcmtd[i], part_probes, 0, + defparts, nr_parts); } return 0; } @@ -159,12 +156,8 @@ static void __exit cleanup_sbc82xx_flash(void) if (!sbcmtd[i]) continue; - if (i<2 || sbcmtd_parts[i]) - mtd_device_unregister(sbcmtd[i]); - else - mtd_device_unregister(sbcmtd[i]); + mtd_device_unregister(sbcmtd[i]); - kfree(sbcmtd_parts[i]); map_destroy(sbcmtd[i]); iounmap((void *)sbc82xx_flash_map[i].virt); -- cgit v0.10.2 From ef5d79f1e15ded65af7a75fc464d5dd246a912c7 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:23 +0400 Subject: mtd: atmel_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 47ece8e..b138143 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -492,8 +492,6 @@ static int __init atmel_nand_probe(struct platform_device *pdev) struct resource *regs; struct resource *mem; int res; - struct mtd_partition *partitions = NULL; - int num_partitions = 0; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!mem) { @@ -652,24 +650,11 @@ static int __init atmel_nand_probe(struct platform_device *pdev) } mtd->name = "atmel_nand"; - num_partitions = parse_mtd_partitions(mtd, NULL, &partitions, 0); - if (num_partitions <= 0 && host->board->parts) { - partitions = host->board->parts; - num_partitions = host->board->num_parts; - } - - if ((!partitions) || (num_partitions == 0)) { - printk(KERN_ERR "atmel_nand: No partitions defined, or unsupported device.\n"); - res = -ENXIO; - goto err_no_partitions; - } - - res = mtd_device_register(mtd, partitions, num_partitions); + res = mtd_device_parse_register(mtd, NULL, 0, + host->board->parts, host->board->num_parts); if (!res) return res; -err_no_partitions: - nand_release(mtd); err_scan_tail: err_scan_ident: err_no_card: -- cgit v0.10.2 From 58171cb1422ed72192cde5573f26e6bd3c5c98f0 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:27 +0400 Subject: mtd: bcm_umi_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c index b1b7b16..a8ae898 100644 --- a/drivers/mtd/nand/bcm_umi_nand.c +++ b/drivers/mtd/nand/bcm_umi_nand.c @@ -489,23 +489,8 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) } /* Register the partitions */ - { - int nr_partitions; - struct mtd_partition *partition_info; - - board_mtd->name = "bcm_umi-nand"; - nr_partitions = parse_mtd_partitions(board_mtd, NULL, - &partition_info, 0); - - if (nr_partitions <= 0) { - printk(KERN_ERR "BCM UMI NAND: Too few partitions - %d\n", - nr_partitions); - iounmap(bcm_umi_io_base); - kfree(board_mtd); - return -EIO; - } - mtd_device_register(board_mtd, partition_info, nr_partitions); - } + board_mtd->name = "bcm_umi-nand"; + mtd_device_parse_register(board_mtd, NULL, 0, NULL, 0); /* Return happy */ return 0; -- cgit v0.10.2 From 4d32de81382c5a0ee74b5ca5996f27111960a48d Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:29 +0400 Subject: mtd: cafe_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Fixed by Brian Norris Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 88ac4b5..f6eb664 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -57,7 +57,6 @@ struct cafe_priv { struct nand_chip nand; - struct mtd_partition *parts; struct pci_dev *pdev; void __iomem *mmio; struct rs_control *rs; @@ -630,8 +629,6 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev, struct cafe_priv *cafe; uint32_t ctrl; int err = 0; - struct mtd_partition *parts; - int nr_parts; /* Very old versions shared the same PCI ident for all three functions on the chip. Verify the class too... */ @@ -800,16 +797,9 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev, pci_set_drvdata(pdev, mtd); - /* We register the whole device first, separate from the partitions */ - mtd_device_register(mtd, NULL, 0); - mtd->name = "cafe_nand"; - nr_parts = parse_mtd_partitions(mtd, part_probes, &parts, 0); - if (nr_parts > 0) { - cafe->parts = parts; - dev_info(&cafe->pdev->dev, "%d partitions found\n", nr_parts); - mtd_device_register(mtd, parts, nr_parts); - } + mtd_device_parse_register(mtd, part_probes, 0, NULL, 0); + goto out; out_irq: -- cgit v0.10.2 From 0b118f06df94eb5a14a70c93e0fc739a67f66ae6 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:30 +0400 Subject: mtd: cmx270_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Artem: tweaked the patch Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/cmx270_nand.c b/drivers/mtd/nand/cmx270_nand.c index f8f5b7c..31308e6 100644 --- a/drivers/mtd/nand/cmx270_nand.c +++ b/drivers/mtd/nand/cmx270_nand.c @@ -149,9 +149,6 @@ static int cmx270_device_ready(struct mtd_info *mtd) static int __init cmx270_init(void) { struct nand_chip *this; - const char *part_type; - struct mtd_partition *mtd_parts; - int mtd_parts_nb = 0; int ret; if (!(machine_is_armcore() && cpu_is_pxa27x())) @@ -220,22 +217,9 @@ static int __init cmx270_init(void) goto err_scan; } - mtd_parts_nb = parse_mtd_partitions(cmx270_nand_mtd, NULL, - &mtd_parts, 0); - if (mtd_parts_nb > 0) - part_type = "command line"; - else - mtd_parts_nb = 0; - - if (!mtd_parts_nb) { - mtd_parts = partition_info; - mtd_parts_nb = NUM_PARTITIONS; - part_type = "static"; - } - /* Register the partitions */ - pr_notice("Using %s partition definition\n", part_type); - ret = mtd_device_register(cmx270_nand_mtd, mtd_parts, mtd_parts_nb); + ret = mtd_device_parse_register(cmx270_nand_mtd, NULL, 0, + partition_info, NUM_PARTITIONS); if (ret) goto err_scan; -- cgit v0.10.2 From bbd86c9c33c8d1549cbad5077c5dbaeec8a5cae8 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:31 +0400 Subject: mtd: cs553x_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Artem: tewaked the patch Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c index b2bdf72..414afa7 100644 --- a/drivers/mtd/nand/cs553x_nand.c +++ b/drivers/mtd/nand/cs553x_nand.c @@ -283,8 +283,6 @@ static int __init cs553x_init(void) int err = -ENXIO; int i; uint64_t val; - int mtd_parts_nb = 0; - struct mtd_partition *mtd_parts = NULL; /* If the CPU isn't a Geode GX or LX, abort */ if (!is_geode()) @@ -314,11 +312,9 @@ static int __init cs553x_init(void) do mtdconcat etc. if we want to. */ for (i = 0; i < NR_CS553X_CONTROLLERS; i++) { if (cs553x_mtd[i]) { - /* If any devices registered, return success. Else the last error. */ - mtd_parts_nb = parse_mtd_partitions(cs553x_mtd[i], NULL, &mtd_parts, 0); - mtd_device_register(cs553x_mtd[i], mtd_parts, - mtd_parts_nb); + mtd_device_parse_register(cs553x_mtd[i], NULL, 0, + NULL, 0); err = 0; } } -- cgit v0.10.2 From 5b55b1eb21a5aba9c6cf4e0325ac9e4dffa89435 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:32 +0400 Subject: mtd: davinci_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 70c92a5..c153e1f 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -57,7 +57,6 @@ struct davinci_nand_info { struct device *dev; struct clk *clk; - bool partitioned; bool is_readmode; @@ -530,8 +529,6 @@ static int __init nand_davinci_probe(struct platform_device *pdev) int ret; uint32_t val; nand_ecc_modes_t ecc_mode; - struct mtd_partition *mtd_parts = NULL; - int mtd_parts_nb = 0; /* insist on board-specific configuration */ if (!pdata) @@ -753,26 +750,8 @@ syndrome_done: if (ret < 0) goto err_scan; - mtd_parts_nb = parse_mtd_partitions(&info->mtd, NULL, &mtd_parts, 0); - - if (mtd_parts_nb <= 0) { - mtd_parts = pdata->parts; - mtd_parts_nb = pdata->nr_parts; - } - - /* Register any partitions */ - if (mtd_parts_nb > 0) { - ret = mtd_device_register(&info->mtd, mtd_parts, - mtd_parts_nb); - if (ret == 0) - info->partitioned = true; - } - - /* If there's no partition info, just package the whole chip - * as a single MTD device. - */ - if (!info->partitioned) - ret = mtd_device_register(&info->mtd, NULL, 0) ? -ENODEV : 0; + ret = mtd_device_parse_register(&info->mtd, NULL, 0, + pdata->parts, pdata->nr_parts); if (ret < 0) goto err_scan; -- cgit v0.10.2 From 6cb03c9cb520186859a034e4e829fb591aea78b6 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:35 +0400 Subject: mtd: edb7312.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/edb7312.c b/drivers/mtd/nand/edb7312.c index 2f9374b..0b1bb91 100644 --- a/drivers/mtd/nand/edb7312.c +++ b/drivers/mtd/nand/edb7312.c @@ -104,9 +104,6 @@ static int ep7312_device_ready(struct mtd_info *mtd) static int __init ep7312_init(void) { struct nand_chip *this; - const char *part_type = 0; - int mtd_parts_nb = 0; - struct mtd_partition *mtd_parts = 0; void __iomem *ep7312_fio_base; /* Allocate memory for MTD device structure and private data */ @@ -156,20 +153,10 @@ static int __init ep7312_init(void) return -ENXIO; } ep7312_mtd->name = "edb7312-nand"; - mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, NULL, &mtd_parts, 0); - if (mtd_parts_nb > 0) - part_type = "command line"; - else - mtd_parts_nb = 0; - if (mtd_parts_nb == 0) { - mtd_parts = partition_info; - mtd_parts_nb = NUM_PARTITIONS; - part_type = "static"; - } /* Register the partitions */ - printk(KERN_NOTICE "Using %s partition definition\n", part_type); - mtd_device_register(ep7312_mtd, mtd_parts, mtd_parts_nb); + mtd_device_register(ep7312_mtd, NULL, 0, + partition_info, NUM_PARTITIONS); /* Return happy */ return 0; -- cgit v0.10.2 From 0d04eda1430e9a796214bee644b7e05d99cfe613 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:38 +0400 Subject: mtd: fsmc_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Linus Walleij: fixed compilation breakage Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c index a39c224..e53b760 100644 --- a/drivers/mtd/nand/fsmc_nand.c +++ b/drivers/mtd/nand/fsmc_nand.c @@ -146,7 +146,7 @@ static struct mtd_partition partition_info_16KB_blk[] = { { .name = "Root File System", .offset = 0x460000, - .size = 0, + .size = MTDPART_SIZ_FULL, }, }; @@ -173,7 +173,7 @@ static struct mtd_partition partition_info_128KB_blk[] = { { .name = "Root File System", .offset = 0x800000, - .size = 0, + .size = MTDPART_SIZ_FULL, }, }; @@ -184,8 +184,6 @@ static struct mtd_partition partition_info_128KB_blk[] = { * @pid: Part ID on the AMBA PrimeCell format * @mtd: MTD info for a NAND flash. * @nand: Chip related info for a NAND flash. - * @partitions: Partition info for a NAND Flash. - * @nr_partitions: Total number of partition of a NAND flash. * * @ecc_place: ECC placing locations in oobfree type format. * @bank: Bank number for probed device. @@ -200,8 +198,6 @@ struct fsmc_nand_data { u32 pid; struct mtd_info mtd; struct nand_chip nand; - struct mtd_partition *partitions; - unsigned int nr_partitions; struct fsmc_eccplace *ecc_place; unsigned int bank; @@ -717,57 +713,13 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) * Check for partition info passed */ host->mtd.name = "nand"; - host->nr_partitions = parse_mtd_partitions(&host->mtd, NULL, - &host->partitions, 0); - if (host->nr_partitions <= 0) { - /* - * Check if partition info passed via command line - */ - if (pdata->partitions) { - host->partitions = pdata->partitions; - host->nr_partitions = pdata->nr_partitions; - } else { - struct mtd_partition *partition; - int i; - - /* Select the default partitions info */ - switch (host->mtd.size) { - case 0x01000000: - case 0x02000000: - case 0x04000000: - host->partitions = partition_info_16KB_blk; - host->nr_partitions = - sizeof(partition_info_16KB_blk) / - sizeof(struct mtd_partition); - break; - case 0x08000000: - case 0x10000000: - case 0x20000000: - case 0x40000000: - host->partitions = partition_info_128KB_blk; - host->nr_partitions = - sizeof(partition_info_128KB_blk) / - sizeof(struct mtd_partition); - break; - default: - ret = -ENXIO; - pr_err("Unsupported NAND size\n"); - goto err_probe; - } - - partition = host->partitions; - for (i = 0; i < host->nr_partitions; i++, partition++) { - if (partition->size == 0) { - partition->size = host->mtd.size - - partition->offset; - break; - } - } - } - } - - ret = mtd_device_register(&host->mtd, host->partitions, - host->nr_partitions); + ret = mtd_device_parse_register(&host->mtd, NULL, 0, + host->mtd.size <= 0x04000000 ? + partition_info_16KB_blk : + partition_info_128KB_blk, + host->mtd.size <= 0x04000000 ? + ARRAY_SIZE(partition_info_16KB_blk) : + ARRAY_SIZE(partition_info_128KB_blk)); if (ret) goto err_probe; -- cgit v0.10.2 From 4571c1396260d3f235d987f4acdadfba820f57bf Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:40 +0400 Subject: mtd: h1910.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/h1910.c b/drivers/mtd/nand/h1910.c index 42f9177..5dc6f0d 100644 --- a/drivers/mtd/nand/h1910.c +++ b/drivers/mtd/nand/h1910.c @@ -81,9 +81,6 @@ static int h1910_device_ready(struct mtd_info *mtd) static int __init h1910_init(void) { struct nand_chip *this; - const char *part_type = 0; - int mtd_parts_nb = 0; - struct mtd_partition *mtd_parts = 0; void __iomem *nandaddr; if (!machine_is_h1900()) @@ -136,18 +133,10 @@ static int __init h1910_init(void) iounmap((void *)nandaddr); return -ENXIO; } - mtd_parts_nb = parse_mtd_partitions(h1910_nand_mtd, NULL, &mtd_parts, 0); - if (mtd_parts_nb > 0) - part_type = "command line"; - else { - mtd_parts = partition_info; - mtd_parts_nb = NUM_PARTITIONS; - part_type = "static"; - } /* Register the partitions */ - printk(KERN_NOTICE "Using %s partition definition\n", part_type); - mtd_device_register(h1910_nand_mtd, mtd_parts, mtd_parts_nb); + mtd_device_parse_register(h1910_nand_mtd, NULL, 0, + partition_info, NUM_PARTITIONS); /* Return happy */ return 0; -- cgit v0.10.2 From 90ee1fb3ac918362402a06d0f71545111f374980 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:41 +0400 Subject: mtd: jz4740_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/jz4740_nand.c b/drivers/mtd/nand/jz4740_nand.c index 920719c..e266407 100644 --- a/drivers/mtd/nand/jz4740_nand.c +++ b/drivers/mtd/nand/jz4740_nand.c @@ -295,8 +295,6 @@ static int __devinit jz_nand_probe(struct platform_device *pdev) struct nand_chip *chip; struct mtd_info *mtd; struct jz_nand_platform_data *pdata = pdev->dev.platform_data; - struct mtd_partition *partition_info; - int num_partitions = 0; nand = kzalloc(sizeof(*nand), GFP_KERNEL); if (!nand) { @@ -369,12 +367,9 @@ static int __devinit jz_nand_probe(struct platform_device *pdev) goto err_gpio_free; } - num_partitions = parse_mtd_partitions(mtd, NULL, &partition_info, 0); - if (num_partitions <= 0 && pdata) { - num_partitions = pdata->num_partitions; - partition_info = pdata->partitions; - } - ret = mtd_device_register(mtd, partition_info, num_partitions); + ret = mtd_device_parse_register(mtd, NULL, 0, + pdata ? pdata->partitions : NULL, + pdata ? pdata->num_partitions : 0); if (ret) { dev_err(&pdev->dev, "Failed to add mtd device\n"); -- cgit v0.10.2 From d4ed8f1222d5ada9da402cf312dc64e39c705da9 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:43 +0400 Subject: mtd: mxc_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index ca42c8f..4c2bb4a 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -143,7 +143,6 @@ struct mxc_nand_host { struct mtd_info mtd; struct nand_chip nand; - struct mtd_partition *parts; struct device *dev; void *spare0; @@ -1044,7 +1043,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) struct mxc_nand_platform_data *pdata = pdev->dev.platform_data; struct mxc_nand_host *host; struct resource *res; - int err = 0, __maybe_unused nr_parts = 0; + int err = 0; struct nand_ecclayout *oob_smallpage, *oob_largepage; /* Allocate memory for MTD device structure and private data */ @@ -1231,16 +1230,8 @@ static int __init mxcnd_probe(struct platform_device *pdev) } /* Register the partitions */ - nr_parts = - parse_mtd_partitions(mtd, part_probes, &host->parts, 0); - if (nr_parts > 0) - mtd_device_register(mtd, host->parts, nr_parts); - else if (pdata->parts) - mtd_device_register(mtd, pdata->parts, pdata->nr_parts); - else { - pr_info("Registering %s as whole device\n", mtd->name); - mtd_device_register(mtd, NULL, 0); - } + mtd_device_parse_register(mtd, part_probes, 0, + pdata->parts, pdata->nr_parts); platform_set_drvdata(pdev, host); -- cgit v0.10.2 From 69c85f1f66888e0ad532f8bb37db81ca1e7e56f0 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:55 +0400 Subject: mtd: omap2.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 8783c08..c5e33fd 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -112,7 +112,6 @@ struct omap_nand_info { struct nand_hw_control controller; struct omap_nand_platform_data *pdata; struct mtd_info mtd; - struct mtd_partition *parts; struct nand_chip nand; struct platform_device *pdev; @@ -1101,13 +1100,8 @@ static int __devinit omap_nand_probe(struct platform_device *pdev) goto out_release_mem_region; } - err = parse_mtd_partitions(&info->mtd, NULL, &info->parts, 0); - if (err > 0) - mtd_device_register(&info->mtd, info->parts, err); - else if (pdata->parts) - mtd_device_register(&info->mtd, pdata->parts, pdata->nr_parts); - else - mtd_device_register(&info->mtd, NULL, 0); + mtd_device_parse_register(&info->mtd, NULL, 0, + pdata->parts, pdata->nr_parts); platform_set_drvdata(pdev, &info->mtd); -- cgit v0.10.2 From c9dd375f553e6ff1862401decb1b585929285b56 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:55 +0400 Subject: mtd: orion_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index 5c55981..29f505a 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -79,8 +79,6 @@ static int __init orion_nand_probe(struct platform_device *pdev) struct resource *res; void __iomem *io_base; int ret = 0; - struct mtd_partition *partitions = NULL; - int num_part = 0; nc = kzalloc(sizeof(struct nand_chip) + sizeof(struct mtd_info), GFP_KERNEL); if (!nc) { @@ -131,14 +129,8 @@ static int __init orion_nand_probe(struct platform_device *pdev) } mtd->name = "orion_nand"; - num_part = parse_mtd_partitions(mtd, NULL, &partitions, 0); - /* If cmdline partitions have been passed, let them be used */ - if (num_part <= 0) { - num_part = board->nr_parts; - partitions = board->parts; - } - - ret = mtd_device_register(mtd, partitions, num_part); + ret = mtd_device_parse_register(mtd, NULL, 0, + board->parts, board->nr_parts); if (ret) { nand_release(mtd); goto no_dev; -- cgit v0.10.2 From 009c840770fda0165302e9853192a7f0677098b3 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:57 +0400 Subject: mtd: plat_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c index 746a723..ea8e123 100644 --- a/drivers/mtd/nand/plat_nand.c +++ b/drivers/mtd/nand/plat_nand.c @@ -21,8 +21,6 @@ struct plat_nand_data { struct nand_chip chip; struct mtd_info mtd; void __iomem *io_base; - int nr_parts; - struct mtd_partition *parts; }; /* @@ -100,21 +98,9 @@ static int __devinit plat_nand_probe(struct platform_device *pdev) goto out; } - if (pdata->chip.part_probe_types) { - err = parse_mtd_partitions(&data->mtd, - pdata->chip.part_probe_types, - &data->parts, 0); - if (err > 0) { - mtd_device_register(&data->mtd, data->parts, err); - return 0; - } - } - if (pdata->chip.partitions) { - data->parts = pdata->chip.partitions; - err = mtd_device_register(&data->mtd, data->parts, - pdata->chip.nr_partitions); - } else - err = mtd_device_register(&data->mtd, NULL, 0); + err = mtd_device_parse_register(&data->mtd, + pdata->chip.part_probe_types, 0, + pdata->chip.partitions, pdata->chip.nr_partitions); if (!err) return err; @@ -144,8 +130,6 @@ static int __devexit plat_nand_remove(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); nand_release(&data->mtd); - if (data->parts && data->parts != pdata->chip.partitions) - kfree(data->parts); if (pdata->ctrl.remove) pdata->ctrl.remove(pdev); iounmap(data->io_base); -- cgit v0.10.2 From 725b75a4acd34e39685483864e824b430e55e2ac Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:58 +0400 Subject: mtd: ppchameleonevb.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/ppchameleonevb.c b/drivers/mtd/nand/ppchameleonevb.c index 9376633..7e52af5 100644 --- a/drivers/mtd/nand/ppchameleonevb.c +++ b/drivers/mtd/nand/ppchameleonevb.c @@ -191,9 +191,6 @@ static int ppchameleonevb_device_ready(struct mtd_info *minfo) static int __init ppchameleonevb_init(void) { struct nand_chip *this; - const char *part_type = 0; - int mtd_parts_nb = 0; - struct mtd_partition *mtd_parts = 0; void __iomem *ppchameleon_fio_base; void __iomem *ppchameleonevb_fio_base; @@ -276,24 +273,13 @@ static int __init ppchameleonevb_init(void) #endif ppchameleon_mtd->name = "ppchameleon-nand"; - mtd_parts_nb = parse_mtd_partitions(ppchameleon_mtd, NULL, &mtd_parts, 0); - if (mtd_parts_nb > 0) - part_type = "command line"; - else - mtd_parts_nb = 0; - - if (mtd_parts_nb == 0) { - if (ppchameleon_mtd->size == NAND_SMALL_SIZE) - mtd_parts = partition_info_me; - else - mtd_parts = partition_info_hi; - mtd_parts_nb = NUM_PARTITIONS; - part_type = "static"; - } /* Register the partitions */ - printk(KERN_NOTICE "Using %s partition definition\n", part_type); - mtd_device_register(ppchameleon_mtd, mtd_parts, mtd_parts_nb); + mtd_device_parse_register(ppchameleon_mtd, NULL, 0, + ppchameleon_mtd->size == NAND_SMALL_SIZE ? + partition_info_me : + partition_info_hi, + NUM_PARTITIONS); nand_evb_init: /**************************** @@ -377,21 +363,13 @@ static int __init ppchameleonevb_init(void) } ppchameleonevb_mtd->name = NAND_EVB_MTD_NAME; - mtd_parts_nb = parse_mtd_partitions(ppchameleonevb_mtd, NULL, &mtd_parts, 0); - if (mtd_parts_nb > 0) - part_type = "command line"; - else - mtd_parts_nb = 0; - - if (mtd_parts_nb == 0) { - mtd_parts = partition_info_evb; - mtd_parts_nb = NUM_PARTITIONS; - part_type = "static"; - } /* Register the partitions */ - printk(KERN_NOTICE "Using %s partition definition\n", part_type); - mtd_device_register(ppchameleonevb_mtd, mtd_parts, mtd_parts_nb); + mtd_device_parse_register(ppchameleonevb_mtd, NULL, 0, + ppchameleon_mtd->size == NAND_SMALL_SIZE ? + partition_info_me : + partition_info_hi, + NUM_PARTITIONS); /* Return happy */ return 0; -- cgit v0.10.2 From ee0f6a15b3f9246ae11e581cb9dae8fb2cc5da5c Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:59 +0400 Subject: mtd: pxa3xx_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 5c3af2f..b7db1b2 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -1133,8 +1133,6 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) { struct pxa3xx_nand_platform_data *pdata; struct pxa3xx_nand_info *info; - struct mtd_partition *parts; - int nr_parts; pdata = pdev->dev.platform_data; if (!pdata) { @@ -1152,13 +1150,8 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) return -ENODEV; } - - nr_parts = parse_mtd_partitions(info->mtd, NULL, &parts, 0); - - if (nr_parts) - return mtd_device_register(info->mtd, parts, nr_parts); - - return mtd_device_register(info->mtd, pdata->parts, pdata->nr_parts); + return mtd_device_parse_register(info->mtd, NULL, 0, + pdata->parts, pdata->nr_parts); } #ifdef CONFIG_PM -- cgit v0.10.2 From 599501a749a1ca3baa94ac9714f06782f63439b0 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:01:02 +0400 Subject: mtd: s3c2410.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index 17954ba..b0f8e77 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -748,21 +748,11 @@ static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info, struct s3c2410_nand_mtd *mtd, struct s3c2410_nand_set *set) { - struct mtd_partition *part_info; - int nr_part = 0; + if (set) + mtd->mtd.name = set->name; - if (set == NULL) - return mtd_device_register(&mtd->mtd, NULL, 0); - - mtd->mtd.name = set->name; - nr_part = parse_mtd_partitions(&mtd->mtd, NULL, &part_info, 0); - - if (nr_part <= 0 && set->nr_partitions > 0) { - nr_part = set->nr_partitions; - part_info = set->partitions; - } - - return mtd_device_register(&mtd->mtd, part_info, nr_part); + return mtd_device_parse_register(&mtd->mtd, NULL, 0, + set->partitions, set->nr_partitions); } /** -- cgit v0.10.2 From 3af55a89912e7e4b2a09d4c8c04fd884a6cf151f Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:01:03 +0400 Subject: mtd: sharpsl.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c index b3377f8..619d2a5 100644 --- a/drivers/mtd/nand/sharpsl.c +++ b/drivers/mtd/nand/sharpsl.c @@ -109,8 +109,6 @@ static int sharpsl_nand_calculate_ecc(struct mtd_info *mtd, const u_char * dat, static int __devinit sharpsl_nand_probe(struct platform_device *pdev) { struct nand_chip *this; - struct mtd_partition *sharpsl_partition_info; - int nr_partitions; struct resource *r; int err = 0; struct sharpsl_nand *sharpsl; @@ -182,14 +180,9 @@ static int __devinit sharpsl_nand_probe(struct platform_device *pdev) /* Register the partitions */ sharpsl->mtd.name = "sharpsl-nand"; - nr_partitions = parse_mtd_partitions(&sharpsl->mtd, NULL, &sharpsl_partition_info, 0); - if (nr_partitions <= 0) { - nr_partitions = data->nr_partitions; - sharpsl_partition_info = data->partitions; - } - err = mtd_device_register(&sharpsl->mtd, sharpsl_partition_info, - nr_partitions); + err = mtd_device_parse_register(&sharpsl->mtd, NULL, 0, + data->partitions, data->nr_partitions); if (err) goto err_add; -- cgit v0.10.2 From 68adef5db85d147943ed97bbd148a712b2323ecc Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:01:09 +0400 Subject: mtd: tmio_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c index b6ffad6..beebd95 100644 --- a/drivers/mtd/nand/tmio_nand.c +++ b/drivers/mtd/nand/tmio_nand.c @@ -378,8 +378,6 @@ static int tmio_probe(struct platform_device *dev) struct tmio_nand *tmio; struct mtd_info *mtd; struct nand_chip *nand_chip; - struct mtd_partition *parts; - int nbparts = 0; int retval; if (data == NULL) @@ -458,13 +456,9 @@ static int tmio_probe(struct platform_device *dev) goto err_scan; } /* Register the partitions */ - nbparts = parse_mtd_partitions(mtd, NULL, &parts, 0); - if (nbparts <= 0 && data) { - parts = data->partition; - nbparts = data->num_partitions; - } - - retval = mtd_device_register(mtd, parts, nbparts); + retval = mtd_device_parse_register(mtd, NULL, 0, + data ? data->partition : NULL, + data ? data->num_partitions : 0); if (!retval) return retval; -- cgit v0.10.2 From 9e58c5d42ff69e7d99cc8e37082f58ba44e7fa7d Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:01:09 +0400 Subject: mtd: txx9ndfmc.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/txx9ndfmc.c b/drivers/mtd/nand/txx9ndfmc.c index 91b05b9..ace46fd 100644 --- a/drivers/mtd/nand/txx9ndfmc.c +++ b/drivers/mtd/nand/txx9ndfmc.c @@ -74,7 +74,6 @@ struct txx9ndfmc_drvdata { unsigned char hold; /* in gbusclock */ unsigned char spw; /* in gbusclock */ struct nand_hw_control hw_control; - struct mtd_partition *parts[MAX_TXX9NDFMC_DEV]; }; static struct platform_device *mtd_to_platdev(struct mtd_info *mtd) @@ -332,7 +331,6 @@ static int __init txx9ndfmc_probe(struct platform_device *dev) struct txx9ndfmc_priv *txx9_priv; struct nand_chip *chip; struct mtd_info *mtd; - int nr_parts; if (!(plat->ch_mask & (1 << i))) continue; @@ -392,9 +390,7 @@ static int __init txx9ndfmc_probe(struct platform_device *dev) } mtd->name = txx9_priv->mtdname; - nr_parts = parse_mtd_partitions(mtd, NULL, - &drvdata->parts[i], 0); - mtd_device_register(mtd, drvdata->parts[i], nr_parts); + mtd_device_parse_register(mtd, NULL, 0, NULL, 0); drvdata->mtds[i] = mtd; } @@ -420,7 +416,6 @@ static int __exit txx9ndfmc_remove(struct platform_device *dev) txx9_priv = chip->priv; nand_release(mtd); - kfree(drvdata->parts[i]); kfree(txx9_priv->mtdname); kfree(txx9_priv); } -- cgit v0.10.2 From 92ffb00d11b24e69cc87a0c0aa5de172d9de8e13 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:01:10 +0400 Subject: mtd: onenand/generic.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c index bca1c49..8152a31 100644 --- a/drivers/mtd/onenand/generic.c +++ b/drivers/mtd/onenand/generic.c @@ -32,7 +32,6 @@ struct onenand_info { struct mtd_info mtd; - struct mtd_partition *parts; struct onenand_chip onenand; }; @@ -71,13 +70,9 @@ static int __devinit generic_onenand_probe(struct platform_device *pdev) goto out_iounmap; } - err = parse_mtd_partitions(&info->mtd, NULL, &info->parts, 0); - if (err > 0) - mtd_device_register(&info->mtd, info->parts, err); - else if (err <= 0 && pdata && pdata->parts) - mtd_device_register(&info->mtd, pdata->parts, pdata->nr_parts); - else - err = mtd_device_register(&info->mtd, NULL, 0); + err = mtd_device_parse_register(&info->mtd, NULL, 0, + pdata ? pdata->parts : NULL, + pdata ? pdata->nr_parts : 0); platform_set_drvdata(pdev, info); -- cgit v0.10.2 From 7d010d2e772e16ef35a9bc6d706ec1e40eac9f46 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:01:11 +0400 Subject: mtd: onenand/omap2.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Axel Lin : fixed build breakage Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c index 5ca2053..06efa14 100644 --- a/drivers/mtd/onenand/omap2.c +++ b/drivers/mtd/onenand/omap2.c @@ -57,7 +57,6 @@ struct omap2_onenand { unsigned long phys_base; int gpio_irq; struct mtd_info mtd; - struct mtd_partition *parts; struct onenand_chip onenand; struct completion irq_done; struct completion dma_done; @@ -752,13 +751,9 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev) if ((r = onenand_scan(&c->mtd, 1)) < 0) goto err_release_regulator; - r = parse_mtd_partitions(&c->mtd, NULL, &c->parts, 0); - if (r > 0) - r = mtd_device_register(&c->mtd, c->parts, r); - else if (pdata->parts != NULL) - r = mtd_device_register(&c->mtd, pdata->parts, pdata->nr_parts); - else - r = mtd_device_register(&c->mtd, NULL, 0); + r = mtd_device_parse_register(&c->mtd, NULL, 0, + pdata ? pdata->parts : NULL, + pdata ? pdata->nr_parts : 0); if (r) goto err_release_onenand; @@ -785,7 +780,6 @@ err_release_mem_region: err_free_cs: gpmc_cs_free(c->gpmc_cs); err_kfree: - kfree(c->parts); kfree(c); return r; @@ -808,7 +802,6 @@ static int __devexit omap2_onenand_remove(struct platform_device *pdev) iounmap(c->onenand.base); release_mem_region(c->phys_base, ONENAND_IO_SIZE); gpmc_cs_free(c->gpmc_cs); - kfree(c->parts); kfree(c); return 0; -- cgit v0.10.2 From f8214b80dacbb4d009b2c8968fe52aafb6ed55d4 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:01:16 +0400 Subject: mtd: onenand/samsung.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Axel Lin : fixed build error. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c index 78a08ea..5474547 100644 --- a/drivers/mtd/onenand/samsung.c +++ b/drivers/mtd/onenand/samsung.c @@ -147,7 +147,6 @@ struct s3c_onenand { struct resource *dma_res; unsigned long phys_base; struct completion complete; - struct mtd_partition *parts; }; #define CMD_MAP_00(dev, addr) (dev->cmd_map(MAP_00, ((addr) << 1))) @@ -1015,13 +1014,9 @@ static int s3c_onenand_probe(struct platform_device *pdev) if (s3c_read_reg(MEM_CFG_OFFSET) & ONENAND_SYS_CFG1_SYNC_READ) dev_info(&onenand->pdev->dev, "OneNAND Sync. Burst Read enabled\n"); - err = parse_mtd_partitions(mtd, NULL, &onenand->parts, 0); - if (err > 0) - mtd_device_register(mtd, onenand->parts, err); - else if (err <= 0 && pdata && pdata->parts) - mtd_device_register(mtd, pdata->parts, pdata->nr_parts); - else - err = mtd_device_register(mtd, NULL, 0); + err = mtd_device_parse_register(mtd, NULL, 0, + pdata ? pdata->parts : NULL, + pdata ? pdata->nr_parts : 0); platform_set_drvdata(pdev, mtd); -- cgit v0.10.2 From 3a8fb12ae9fdbb712f11f9c73e5d08dc34f82118 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:18 +0400 Subject: mtd: mtd_dataflash.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index 4d4a9cd..8f6b02c 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -637,8 +637,6 @@ add_dataflash_otp(struct spi_device *spi, char *name, struct flash_platform_data *pdata = spi->dev.platform_data; char *otp_tag = ""; int err = 0; - struct mtd_partition *parts; - int nr_parts = 0; priv = kzalloc(sizeof *priv, GFP_KERNEL); if (!priv) @@ -677,23 +675,10 @@ add_dataflash_otp(struct spi_device *spi, char *name, pagesize, otp_tag); dev_set_drvdata(&spi->dev, priv); - nr_parts = parse_mtd_partitions(device, NULL, &parts, 0); + err = mtd_device_parse_register(device, NULL, 0, + pdata ? pdata->parts : NULL, + pdata ? pdata->nr_parts : 0); - if (nr_parts <= 0 && pdata && pdata->parts) { - parts = pdata->parts; - nr_parts = pdata->nr_parts; - } - - if (nr_parts > 0) { - priv->partitioned = 1; - err = mtd_device_register(device, parts, nr_parts); - goto out; - } - - if (mtd_device_register(device, NULL, 0) == 1) - err = -ENODEV; - -out: if (!err) return 0; -- cgit v0.10.2 From d117040be074fd1c019b751515f79efe99cd7d76 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 9 Jun 2011 14:54:41 +0400 Subject: mtd: edb7312: correctly pass MTD name to parsers cmdline partitions parser expects MTD name at mtd->name, instead of origin, while edb7312 passes MTDID as origin. Fix that. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/edb7312.c b/drivers/mtd/maps/edb7312.c index fe42a21..b07acd6 100644 --- a/drivers/mtd/maps/edb7312.c +++ b/drivers/mtd/maps/edb7312.c @@ -88,8 +88,9 @@ static int __init init_edb7312nor(void) } if (mymtd) { mymtd->owner = THIS_MODULE; + mymtd->name = MTDID; - mtd_parts_nb = parse_mtd_partitions(mymtd, probes, &mtd_parts, MTDID); + mtd_parts_nb = parse_mtd_partitions(mymtd, probes, &mtd_parts, 0); if (mtd_parts_nb > 0) part_type = "detected"; -- cgit v0.10.2 From e638275e18a929103bb087acb94d2b67eb0818e0 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Fri, 17 Jun 2011 19:06:33 +0800 Subject: mtd: onenand: remove redundant mtd_device_unregister before onenand_release onenand_release() will call mtd_device_unregister(), thus remove the redundant mtd_device_unregister() call before onenand_release(). Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c index 8152a31..7813095 100644 --- a/drivers/mtd/onenand/generic.c +++ b/drivers/mtd/onenand/generic.c @@ -97,7 +97,6 @@ static int __devexit generic_onenand_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); if (info) { - mtd_device_unregister(&info->mtd); onenand_release(&info->mtd); release_mem_region(res->start, size); iounmap(info->onenand.base); -- cgit v0.10.2 From e8a0e41266e9c207ad8ac158cee9547ef1bc90ac Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Mon, 13 Jun 2011 22:16:44 +0200 Subject: jffs2: Avoid unneeded 'if' before kfree kfree() deals gracefully with NULL pointers, so it's pointless to test for one prior to calling it. This removes such a test from jffs2_scan_medium(). Signed-off-by: Jesper Juhl Signed-off-by: Artem Bityutskiy diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c index 8d8cd34..28107ca 100644 --- a/fs/jffs2/scan.c +++ b/fs/jffs2/scan.c @@ -275,9 +275,7 @@ int jffs2_scan_medium(struct jffs2_sb_info *c) else c->mtd->unpoint(c->mtd, 0, c->mtd->size); #endif - if (s) - kfree(s); - + kfree(s); return ret; } -- cgit v0.10.2 From f722013ee9fd24623df31dec9a91a6d02c3e2f2f Mon Sep 17 00:00:00 2001 From: "THOMSON, Adam (Adam)" Date: Tue, 14 Jun 2011 16:52:38 +0200 Subject: mtd: nand_base: always initialise oob_poi before writing OOB data In nand_do_write_ops() code it is possible for a caller to provide ops.oobbuf populated and ops.mode == MTD_OOB_AUTO, which currently means that the chip->oob_poi buffer isn't initialised to all 0xFF. The nand_fill_oob() method then carries out the task of copying the provided OOB data to oob_poi, but with MTD_OOB_AUTO it skips areas marked as unavailable by the layout struct, including the bad block marker bytes. An example of this causing issues is when the last OOB data read was from the start of a bad block where the markers are not 0xFF, and the caller wishes to write new OOB data at the beginning of another block. In this scenario the caller would provide OOB data, but nand_fill_oob() would skip the bad block marker bytes in oob_poi before copying the OOB data provided by the caller. This means that when the OOB data is written back to NAND, the block is inadvertently marked as bad without the caller knowing. This has been witnessed when using YAFFS2 where tags are stored in the OOB. To avoid this oob_poi is always initialised to 0xFF to make sure no left over data is inadvertently written back to the OOB area. Credits to Brian Norris for fixing this patch. Signed-off-by: Adam Thomson Signed-off-by: Artem Bityutskiy Cc: stable@kernel.org [2.6.20+] diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 1525cd0..408e1d0a 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2088,14 +2088,22 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, /** * nand_fill_oob - [Internal] Transfer client buffer to oob - * @chip: nand chip structure + * @mtd: MTD device structure * @oob: oob data buffer * @len: oob data write length * @ops: oob ops structure */ -static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len, - struct mtd_oob_ops *ops) +static uint8_t *nand_fill_oob(struct mtd_info *mtd, uint8_t *oob, size_t len, + struct mtd_oob_ops *ops) { + struct nand_chip *chip = mtd->priv; + + /* + * Initialise to all 0xFF, to avoid the possibility of left over OOB + * data from a previous OOB read. + */ + memset(chip->oob_poi, 0xff, mtd->oobsize); + switch (ops->mode) { case MTD_OOB_PLACE: @@ -2192,10 +2200,6 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, (chip->pagebuf << chip->page_shift) < (to + ops->len)) chip->pagebuf = -1; - /* If we're not given explicit OOB data, let it be 0xFF */ - if (likely(!oob)) - memset(chip->oob_poi, 0xff, mtd->oobsize); - /* Don't allow multipage oob writes with offset */ if (oob && ops->ooboffs && (ops->ooboffs + ops->ooblen > oobmaxlen)) return -EINVAL; @@ -2217,8 +2221,11 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, if (unlikely(oob)) { size_t len = min(oobwritelen, oobmaxlen); - oob = nand_fill_oob(chip, oob, len, ops); + oob = nand_fill_oob(mtd, oob, len, ops); oobwritelen -= len; + } else { + /* We still need to erase leftover OOB data */ + memset(chip->oob_poi, 0xff, mtd->oobsize); } ret = chip->write_page(mtd, chip, wbuf, page, cached, @@ -2392,10 +2399,8 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, if (page == chip->pagebuf) chip->pagebuf = -1; - memset(chip->oob_poi, 0xff, mtd->oobsize); - nand_fill_oob(chip, ops->oobbuf, ops->ooblen, ops); + nand_fill_oob(mtd, ops->oobbuf, ops->ooblen, ops); status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask); - memset(chip->oob_poi, 0xff, mtd->oobsize); if (status) return status; -- cgit v0.10.2 From c7975330154af17aecc167b33ca866b6b3d98918 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Fri, 10 Jun 2011 18:18:28 +0400 Subject: mtd: abstract last MTD partition parser argument Encapsulate last MTD partition parser argument into a separate structure. Currently it holds only 'origin' field for RedBoot parser, but will be extended in future to contain at least device_node for OF devices. Amended commentary to make kerneldoc happy Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/afs.c b/drivers/mtd/afs.c index 302372c..89a02f6 100644 --- a/drivers/mtd/afs.c +++ b/drivers/mtd/afs.c @@ -162,8 +162,8 @@ afs_read_iis(struct mtd_info *mtd, struct image_info_struct *iis, u_int ptr) } static int parse_afs_partitions(struct mtd_info *mtd, - struct mtd_partition **pparts, - unsigned long origin) + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) { struct mtd_partition *parts; u_int mask, off, idx, sz; diff --git a/drivers/mtd/ar7part.c b/drivers/mtd/ar7part.c index 6697a1e..71bfa2e 100644 --- a/drivers/mtd/ar7part.c +++ b/drivers/mtd/ar7part.c @@ -46,7 +46,7 @@ struct ar7_bin_rec { static int create_mtd_partitions(struct mtd_info *master, struct mtd_partition **pparts, - unsigned long origin) + struct mtd_part_parser_data *data) { struct ar7_bin_rec header; unsigned int offset; diff --git a/drivers/mtd/cmdlinepart.c b/drivers/mtd/cmdlinepart.c index be0c121..1b11f94 100644 --- a/drivers/mtd/cmdlinepart.c +++ b/drivers/mtd/cmdlinepart.c @@ -313,8 +313,8 @@ static int mtdpart_setup_real(char *s) * the first one in the chain if a NULL mtd_id is passed in. */ static int parse_cmdline_partitions(struct mtd_info *master, - struct mtd_partition **pparts, - unsigned long origin) + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) { unsigned long offset; int i; diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 1326747..e186399 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -457,7 +457,7 @@ EXPORT_SYMBOL_GPL(mtd_device_register); * @mtd: the MTD device to register * @types: the list of MTD partition probes to try, see * 'parse_mtd_partitions()' for more information - * @origin: start address of MTD device, %0 unless you are sure you need this. + * @parser_data: MTD partition parser-specific data * @parts: fallback partition information to register, if parsing fails; * only valid if %nr_parts > %0 * @nr_parts: the number of partitions in parts, if zero then the full @@ -480,14 +480,14 @@ EXPORT_SYMBOL_GPL(mtd_device_register); * Returns zero in case of success and a negative error code in case of failure. */ int mtd_device_parse_register(struct mtd_info *mtd, const char **types, - unsigned long origin, + struct mtd_part_parser_data *parser_data, const struct mtd_partition *parts, int nr_parts) { int err; struct mtd_partition *real_parts; - err = parse_mtd_partitions(mtd, types, &real_parts, origin); + err = parse_mtd_partitions(mtd, types, &real_parts, parser_data); if (err <= 0 && nr_parts) { real_parts = kmemdup(parts, sizeof(*parts) * nr_parts, GFP_KERNEL); diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 2b71ccb..34d582c 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -736,7 +736,7 @@ static const char *default_mtd_part_types[] = {"cmdlinepart", NULL}; * @master: the master partition (describes whole MTD device) * @types: names of partition parsers to try or %NULL * @pparts: array of partitions found is returned here - * @origin: MTD device start address (use %0 if unsure) + * @data: MTD partition parser-specific data * * This function tries to find partition on MTD device @master. It uses MTD * partition parsers, specified in @types. However, if @types is %NULL, then @@ -750,7 +750,8 @@ static const char *default_mtd_part_types[] = {"cmdlinepart", NULL}; * point to an array containing this number of &struct mtd_info objects. */ int parse_mtd_partitions(struct mtd_info *master, const char **types, - struct mtd_partition **pparts, unsigned long origin) + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) { struct mtd_part_parser *parser; int ret = 0; @@ -764,7 +765,7 @@ int parse_mtd_partitions(struct mtd_info *master, const char **types, parser = get_partition_parser(*types); if (!parser) continue; - ret = (*parser->parse_fn)(master, pparts, origin); + ret = (*parser->parse_fn)(master, pparts, data); if (ret > 0) { printk(KERN_NOTICE "%d %s partitions found on MTD device %s\n", ret, parser->name, master->name); diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c index 7a87d07..56e48ea 100644 --- a/drivers/mtd/redboot.c +++ b/drivers/mtd/redboot.c @@ -56,8 +56,8 @@ static inline int redboot_checksum(struct fis_image_desc *img) } static int parse_redboot_partitions(struct mtd_info *master, - struct mtd_partition **pparts, - unsigned long fis_origin) + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) { int nrparts = 0; struct fis_image_desc *buf; @@ -197,11 +197,10 @@ static int parse_redboot_partitions(struct mtd_info *master, goto out; } new_fl->img = &buf[i]; - if (fis_origin) { - buf[i].flash_base -= fis_origin; - } else { - buf[i].flash_base &= master->size-1; - } + if (data && data->origin) + buf[i].flash_base -= data->origin; + else + buf[i].flash_base &= master->size-1; /* I'm sure the JFFS2 code has done me permanent damage. * I now think the following is _normal_ diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index d28a241..b2b454b 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -323,13 +323,14 @@ static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd) /* Kernel-side ioctl definitions */ struct mtd_partition; +struct mtd_part_parser_data; extern int mtd_device_register(struct mtd_info *master, const struct mtd_partition *parts, int nr_parts); extern int mtd_device_parse_register(struct mtd_info *mtd, const char **part_probe_types, - unsigned long origin, + struct mtd_part_parser_data *parser_data, const struct mtd_partition *defparts, int defnr_parts); extern int mtd_device_unregister(struct mtd_info *master); diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 1431cf2..5fdb963 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -52,6 +52,15 @@ struct mtd_partition { struct mtd_info; +/** + * struct mtd_part_parser_data - used to pass data to MTD partition parsers. + * @origin: for RedBoot, start address of MTD device + */ +struct mtd_part_parser_data { + unsigned long origin; +}; + + /* * Functions dealing with the various ways of partitioning the space */ @@ -60,13 +69,15 @@ struct mtd_part_parser { struct list_head list; struct module *owner; const char *name; - int (*parse_fn)(struct mtd_info *, struct mtd_partition **, unsigned long); + int (*parse_fn)(struct mtd_info *, struct mtd_partition **, + struct mtd_part_parser_data *); }; extern int register_mtd_parser(struct mtd_part_parser *parser); extern int deregister_mtd_parser(struct mtd_part_parser *parser); extern int parse_mtd_partitions(struct mtd_info *master, const char **types, - struct mtd_partition **pparts, unsigned long origin); + struct mtd_partition **pparts, + struct mtd_part_parser_data *data); #define put_partition_parser(p) do { module_put((p)->owner); } while(0) -- cgit v0.10.2 From d26c87d64eff271146b40b66c7de8cfeaf956707 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Sun, 29 May 2011 21:32:33 +0400 Subject: mtd: prepare to convert of_mtd_parse_partitions to partition parser Prepare to convert of_mtd_parse_partitions() to usual partitions parser: 1) Register ofpart parser 2) Internally don't use passed device for error printing 3) Add device_node to mtd_part_parser_data struct 4) Move of_mtd_parse_partitions from __devinit to common text section 5) add ofpart to the default list of partition parsers Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 34d582c..9e8ee05 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -729,7 +729,11 @@ EXPORT_SYMBOL_GPL(deregister_mtd_parser); * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you * are changing this array! */ -static const char *default_mtd_part_types[] = {"cmdlinepart", NULL}; +static const char *default_mtd_part_types[] = { + "cmdlinepart", + "ofpart", + NULL +}; /** * parse_mtd_partitions - parse MTD partitions @@ -741,7 +745,7 @@ static const char *default_mtd_part_types[] = {"cmdlinepart", NULL}; * This function tries to find partition on MTD device @master. It uses MTD * partition parsers, specified in @types. However, if @types is %NULL, then * the default list of parsers is used. The default list contains only the - * "cmdlinepart" parser ATM. + * "cmdlinepart" and "ofpart" parsers ATM. * * This function may return: * o a negative error code in case of failure diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c index a996718..7c2c926 100644 --- a/drivers/mtd/ofpart.c +++ b/drivers/mtd/ofpart.c @@ -20,7 +20,17 @@ #include #include -int __devinit of_mtd_parse_partitions(struct device *dev, +static int parse_ofpart_partitions(struct mtd_info *master, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + if (!data || !data->of_node) + return 0; + + return of_mtd_parse_partitions(NULL, data->of_node, pparts); +} + +int of_mtd_parse_partitions(struct device *dev, struct device_node *node, struct mtd_partition **pparts) { @@ -69,7 +79,7 @@ int __devinit of_mtd_parse_partitions(struct device *dev, if (!i) { of_node_put(pp); - dev_err(dev, "No valid partition found on %s\n", node->full_name); + pr_err("No valid partition found on %s\n", node->full_name); kfree(*pparts); *pparts = NULL; return -EINVAL; @@ -79,4 +89,17 @@ int __devinit of_mtd_parse_partitions(struct device *dev, } EXPORT_SYMBOL(of_mtd_parse_partitions); +static struct mtd_part_parser ofpart_parser = { + .owner = THIS_MODULE, + .parse_fn = parse_ofpart_partitions, + .name = "ofpart", +}; + +static int __init ofpart_parser_init(void) +{ + return register_mtd_parser(&ofpart_parser); +} + +module_init(ofpart_parser_init); + MODULE_LICENSE("GPL"); diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 5fdb963..ec60fd1 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -51,13 +51,16 @@ struct mtd_partition { struct mtd_info; +struct device_node; /** * struct mtd_part_parser_data - used to pass data to MTD partition parsers. * @origin: for RedBoot, start address of MTD device + * @of_node: for OF parsers, device node containing partitioning information */ struct mtd_part_parser_data { unsigned long origin; + struct device_node *of_node; }; @@ -85,7 +88,7 @@ struct device; struct device_node; #ifdef CONFIG_MTD_OF_PARTS -int __devinit of_mtd_parse_partitions(struct device *dev, +int of_mtd_parse_partitions(struct device *dev, struct device_node *node, struct mtd_partition **pparts); #else -- cgit v0.10.2 From 5f4ba9f9251a76753f50a4b9b8f49e6ec83d3d22 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:02:21 +0400 Subject: mtd: physmap_of: use ofpart through generic parsing Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index d251d1d..6a75743 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -165,7 +165,8 @@ static struct mtd_info * __devinit obsolete_probe(struct platform_device *dev, specifies the list of partition probers to use. If none is given then the default is use. These take precedence over other device tree information. */ -static const char *part_probe_types_def[] = { "cmdlinepart", "RedBoot", NULL }; +static const char *part_probe_types_def[] = { "cmdlinepart", "RedBoot", + "ofpart", NULL }; static const char ** __devinit of_get_probes(struct device_node *dp) { const char *cp; @@ -218,6 +219,7 @@ static int __devinit of_flash_probe(struct platform_device *dev) int reg_tuple_size; struct mtd_info **mtd_list = NULL; resource_size_t res_size; + struct mtd_part_parser_data ppdata; match = of_match_device(of_flash_match, &dev->dev); if (!match) @@ -331,9 +333,10 @@ static int __devinit of_flash_probe(struct platform_device *dev) if (err) goto err_out; + ppdata.of_node = dp; part_probe_types = of_get_probes(dp); err = parse_mtd_partitions(info->cmtd, part_probe_types, - &info->parts, 0); + &info->parts, &ppdata); if (err < 0) { of_free_probes(part_probe_types); goto err_out; @@ -341,12 +344,6 @@ static int __devinit of_flash_probe(struct platform_device *dev) of_free_probes(part_probe_types); if (err == 0) { - err = of_mtd_parse_partitions(&dev->dev, dp, &info->parts); - if (err < 0) - goto err_out; - } - - if (err == 0) { err = parse_obsolete_partitions(dev, info, dp); if (err < 0) goto err_out; -- cgit v0.10.2 From ea6a4729869f899a904d862168bfc31e1451570e Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:02:20 +0400 Subject: mtd: m25p80: use ofpart through generic parsing Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 70d5fca..399c234 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -827,6 +827,7 @@ static int __devinit m25p_probe(struct spi_device *spi) unsigned i; struct mtd_partition *parts = NULL; int nr_parts = 0; + struct mtd_part_parser_data ppdata; /* Platform data helps sort out which chip type we have, as * well as how this board partitions it. If we don't have @@ -928,6 +929,7 @@ static int __devinit m25p_probe(struct spi_device *spi) if (info->flags & M25P_NO_ERASE) flash->mtd.flags |= MTD_NO_ERASE; + ppdata.of_node = spi->dev.of_node; flash->mtd.dev.parent = &spi->dev; flash->page_size = info->page_size; @@ -968,20 +970,13 @@ static int __devinit m25p_probe(struct spi_device *spi) /* partitions should match sector boundaries; and it may be good to * use readonly partitions for writeprotected sectors (BP2..BP0). */ - nr_parts = parse_mtd_partitions(&flash->mtd, NULL, &parts, 0); + nr_parts = parse_mtd_partitions(&flash->mtd, NULL, &parts, &ppdata); if (nr_parts <= 0 && data && data->parts) { parts = data->parts; nr_parts = data->nr_parts; } -#ifdef CONFIG_MTD_OF_PARTS - if (nr_parts <= 0 && spi->dev.of_node) { - nr_parts = of_mtd_parse_partitions(&spi->dev, - spi->dev.of_node, &parts); - } -#endif - if (nr_parts > 0) { for (i = 0; i < nr_parts; i++) { DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = " -- cgit v0.10.2 From b6b0fae717bd01d6fcdcef70989c4bc9b77ac0c0 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:02:22 +0400 Subject: mtd: fsl_elbc_nand: use ofpart through generic parsing Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index d4ea5fe..4d225ba 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -842,13 +842,15 @@ static int __devinit fsl_elbc_nand_probe(struct platform_device *pdev) struct resource res; struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl; static const char *part_probe_types[] - = { "cmdlinepart", "RedBoot", NULL }; + = { "cmdlinepart", "RedBoot", "ofpart", NULL }; struct mtd_partition *parts; int ret; int bank; struct device *dev; struct device_node *node = pdev->dev.of_node; + struct mtd_part_parser_data ppdata; + ppdata.of_node = pdev->dev.of_node; if (!fsl_lbc_ctrl_dev || !fsl_lbc_ctrl_dev->regs) return -ENODEV; lbc = fsl_lbc_ctrl_dev->regs; @@ -934,16 +936,10 @@ static int __devinit fsl_elbc_nand_probe(struct platform_device *pdev) /* First look for RedBoot table or partitions on the command * line, these take precedence over device tree information */ - ret = parse_mtd_partitions(&priv->mtd, part_probe_types, &parts, 0); + ret = parse_mtd_partitions(&priv->mtd, part_probe_types, &parts, &ppdata); if (ret < 0) goto err; - if (ret == 0) { - ret = of_mtd_parse_partitions(priv->dev, node, &parts); - if (ret < 0) - goto err; - } - mtd_device_register(&priv->mtd, parts, ret); printk(KERN_INFO "eLBC NAND device at 0x%llx, bank %d\n", -- cgit v0.10.2 From a454a296aa8e63f5e5c749343a99fd25c37a3c44 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:02:23 +0400 Subject: mtd: fsl_upm: use ofpart through generic parsing Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index 7c782eb..714d831 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -158,6 +158,7 @@ static int __devinit fun_chip_init(struct fsl_upm_nand *fun, { int ret; struct device_node *flash_np; + struct mtd_part_parser_data ppdata; fun->chip.IO_ADDR_R = fun->io_base; fun->chip.IO_ADDR_W = fun->io_base; @@ -191,15 +192,9 @@ static int __devinit fun_chip_init(struct fsl_upm_nand *fun, if (ret) goto err; - ret = parse_mtd_partitions(&fun->mtd, NULL, &fun->parts, 0); + ppdata.of_node = flash_np; + ret = parse_mtd_partitions(&fun->mtd, NULL, &fun->parts, &ppdata); -#ifdef CONFIG_MTD_OF_PARTS - if (ret == 0) { - ret = of_mtd_parse_partitions(fun->dev, flash_np, &fun->parts); - if (ret < 0) - goto err; - } -#endif ret = mtd_device_register(&fun->mtd, fun->parts, ret); err: of_node_put(flash_np); -- cgit v0.10.2 From b3702ea4915363102870a6af60d06d655ca4a09d Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:02:24 +0400 Subject: mtd: mpc5121_nfc: use ofpart through generic parsing Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index 30f78ea..9380f96 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -661,6 +661,7 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op) int resettime = 0; int retval = 0; int rev, len; + struct mtd_part_parser_data ppdata; /* * Check SoC revision. This driver supports only NFC @@ -725,6 +726,7 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op) } mtd->name = "MPC5121 NAND"; + ppdata.of_node = dn; chip->dev_ready = mpc5121_nfc_dev_ready; chip->cmdfunc = mpc5121_nfc_command; chip->read_byte = mpc5121_nfc_read_byte; @@ -836,11 +838,7 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op) dev_set_drvdata(dev, mtd); /* Register device in MTD */ - retval = parse_mtd_partitions(mtd, NULL, &parts, 0); -#ifdef CONFIG_MTD_OF_PARTS - if (retval == 0) - retval = of_mtd_parse_partitions(dev, dn, &parts); -#endif + retval = parse_mtd_partitions(mtd, NULL, &parts, &ppdata); if (retval < 0) { dev_err(dev, "Error parsing MTD partitions!\n"); devm_free_irq(dev, prv->irq, mtd); -- cgit v0.10.2 From 9d7948c50055e74b693ce9e99a709b2e5bbc1942 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:02:25 +0400 Subject: mtd: ndfc: use ofpart through generic parsing Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index 70c04ff..1528734 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -161,6 +161,7 @@ static int ndfc_chip_init(struct ndfc_controller *ndfc, { struct device_node *flash_np; struct nand_chip *chip = &ndfc->chip; + struct mtd_part_parser_data ppdata; int ret; chip->IO_ADDR_R = ndfc->ndfcbase + NDFC_DATA; @@ -188,6 +189,7 @@ static int ndfc_chip_init(struct ndfc_controller *ndfc, if (!flash_np) return -ENODEV; + ppdata->of_node = flash_np; ndfc->mtd.name = kasprintf(GFP_KERNEL, "%s.%s", dev_name(&ndfc->ofdev->dev), flash_np->name); if (!ndfc->mtd.name) { @@ -199,17 +201,10 @@ static int ndfc_chip_init(struct ndfc_controller *ndfc, if (ret) goto err; - ret = parse_mtd_partitions(&ndfc->mtd, NULL, &ndfc->parts, 0); + ret = parse_mtd_partitions(&ndfc->mtd, NULL, &ndfc->parts, &ppdata); if (ret < 0) goto err; - if (ret == 0) { - ret = of_mtd_parse_partitions(&ndfc->ofdev->dev, flash_np, - &ndfc->parts); - if (ret < 0) - goto err; - } - ret = mtd_device_register(&ndfc->mtd, ndfc->parts, ret); err: -- cgit v0.10.2 From 2cd9ea5256ecf2bc795d476598ac7f43f4b83a97 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:02:26 +0400 Subject: mtd: socrates_nand: use ofpart through generic parsing Convert the driver to use ofpart partitions parsing through the generic parse_mtd_partitions(). Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/socrates_nand.c b/drivers/mtd/nand/socrates_nand.c index 9023ac8..f4f79ec 100644 --- a/drivers/mtd/nand/socrates_nand.c +++ b/drivers/mtd/nand/socrates_nand.c @@ -166,6 +166,7 @@ static int __devinit socrates_nand_probe(struct platform_device *ofdev) int res; struct mtd_partition *partitions = NULL; int num_partitions = 0; + struct mtd_part_parser_data ppdata; /* Allocate memory for the device structure (and zero it) */ host = kzalloc(sizeof(struct socrates_nand_host), GFP_KERNEL); @@ -191,6 +192,7 @@ static int __devinit socrates_nand_probe(struct platform_device *ofdev) mtd->name = "socrates_nand"; mtd->owner = THIS_MODULE; mtd->dev.parent = &ofdev->dev; + ppdata.of_node = ofdev->dev.of_node; /*should never be accessed directly */ nand_chip->IO_ADDR_R = (void *)0xdeadbeef; @@ -223,22 +225,12 @@ static int __devinit socrates_nand_probe(struct platform_device *ofdev) goto out; } - num_partitions = parse_mtd_partitions(mtd, NULL, &partitions, 0); + num_partitions = parse_mtd_partitions(mtd, NULL, &partitions, &ppdata); if (num_partitions < 0) { res = num_partitions; goto release; } - if (num_partitions == 0) { - num_partitions = of_mtd_parse_partitions(&ofdev->dev, - ofdev->dev.of_node, - &partitions); - if (num_partitions < 0) { - res = num_partitions; - goto release; - } - } - res = mtd_device_register(mtd, partitions, num_partitions); if (!res) return res; -- cgit v0.10.2 From 628376fb5369c353680f03f47705b1437ff8de80 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:05:33 +0400 Subject: mtd: drop of_mtd_parse_partitions() All users have been converted to call of_mtd_parse_partitions through parse_mtd_partitions() multiplexer. Drop obsolete API. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c index 7c2c926..24007f3 100644 --- a/drivers/mtd/ofpart.c +++ b/drivers/mtd/ofpart.c @@ -24,20 +24,19 @@ static int parse_ofpart_partitions(struct mtd_info *master, struct mtd_partition **pparts, struct mtd_part_parser_data *data) { - if (!data || !data->of_node) - return 0; - - return of_mtd_parse_partitions(NULL, data->of_node, pparts); -} - -int of_mtd_parse_partitions(struct device *dev, - struct device_node *node, - struct mtd_partition **pparts) -{ + struct device_node *node; const char *partname; struct device_node *pp; int nr_parts, i; + + if (!data) + return 0; + + node = data->of_node; + if (!node) + return 0; + /* First count the subnodes */ pp = NULL; nr_parts = 0; @@ -87,7 +86,6 @@ int of_mtd_parse_partitions(struct device *dev, return nr_parts; } -EXPORT_SYMBOL(of_mtd_parse_partitions); static struct mtd_part_parser ofpart_parser = { .owner = THIS_MODULE, diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index ec60fd1..a8a961a 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -84,22 +84,6 @@ extern int parse_mtd_partitions(struct mtd_info *master, const char **types, #define put_partition_parser(p) do { module_put((p)->owner); } while(0) -struct device; -struct device_node; - -#ifdef CONFIG_MTD_OF_PARTS -int of_mtd_parse_partitions(struct device *dev, - struct device_node *node, - struct mtd_partition **pparts); -#else -static inline int of_mtd_parse_partitions(struct device *dev, - struct device_node *node, - struct mtd_partition **pparts) -{ - return 0; -} -#endif - int mtd_is_partition(struct mtd_info *mtd); int mtd_add_partition(struct mtd_info *master, char *name, long long offset, long long length); -- cgit v0.10.2 From fbcf62a32be1e897a1d730af430758f881f8ef35 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 30 May 2011 01:26:17 +0400 Subject: mtd: physmap_of: move parse_obsolete_partitions to become separate parser Move parse_obsolete_partitions() to ofpart.c and register it as an ofoldpart partitions parser. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index 6a75743..55c4e2e 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -40,51 +40,6 @@ struct of_flash { }; #define OF_FLASH_PARTS(info) ((info)->parts) -static int parse_obsolete_partitions(struct platform_device *dev, - struct of_flash *info, - struct device_node *dp) -{ - int i, plen, nr_parts; - const struct { - __be32 offset, len; - } *part; - const char *names; - - part = of_get_property(dp, "partitions", &plen); - if (!part) - return 0; /* No partitions found */ - - dev_warn(&dev->dev, "Device tree uses obsolete partition map binding\n"); - - nr_parts = plen / sizeof(part[0]); - - info->parts = kzalloc(nr_parts * sizeof(*info->parts), GFP_KERNEL); - if (!info->parts) - return -ENOMEM; - - names = of_get_property(dp, "partition-names", &plen); - - for (i = 0; i < nr_parts; i++) { - info->parts[i].offset = be32_to_cpu(part->offset); - info->parts[i].size = be32_to_cpu(part->len) & ~1; - if (be32_to_cpu(part->len) & 1) /* bit 0 set signifies read only partition */ - info->parts[i].mask_flags = MTD_WRITEABLE; - - if (names && (plen > 0)) { - int len = strlen(names) + 1; - - info->parts[i].name = (char *)names; - plen -= len; - names += len; - } else { - info->parts[i].name = "unnamed"; - } - - part++; - } - - return nr_parts; -} static int of_flash_remove(struct platform_device *dev) { @@ -166,7 +121,7 @@ static struct mtd_info * __devinit obsolete_probe(struct platform_device *dev, default is use. These take precedence over other device tree information. */ static const char *part_probe_types_def[] = { "cmdlinepart", "RedBoot", - "ofpart", NULL }; + "ofpart", "ofoldpart", NULL }; static const char ** __devinit of_get_probes(struct device_node *dp) { const char *cp; @@ -343,12 +298,6 @@ static int __devinit of_flash_probe(struct platform_device *dev) } of_free_probes(part_probe_types); - if (err == 0) { - err = parse_obsolete_partitions(dev, info, dp); - if (err < 0) - goto err_out; - } - mtd_device_register(info->cmtd, info->parts, err); kfree(mtd_list); diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c index 24007f3..41c4518 100644 --- a/drivers/mtd/ofpart.c +++ b/drivers/mtd/ofpart.c @@ -93,9 +93,82 @@ static struct mtd_part_parser ofpart_parser = { .name = "ofpart", }; +static int parse_ofoldpart_partitions(struct mtd_info *master, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + struct device_node *dp; + int i, plen, nr_parts; + const struct { + __be32 offset, len; + } *part; + const char *names; + + if (!data) + return 0; + + dp = data->of_node; + if (!dp) + return 0; + + part = of_get_property(dp, "partitions", &plen); + if (!part) + return 0; /* No partitions found */ + + pr_warning("Device tree uses obsolete partition map binding: %s\n", + dp->full_name); + + nr_parts = plen / sizeof(part[0]); + + *pparts = kzalloc(nr_parts * sizeof(*(*pparts)), GFP_KERNEL); + if (!pparts) + return -ENOMEM; + + names = of_get_property(dp, "partition-names", &plen); + + for (i = 0; i < nr_parts; i++) { + (*pparts)[i].offset = be32_to_cpu(part->offset); + (*pparts)[i].size = be32_to_cpu(part->len) & ~1; + /* bit 0 set signifies read only partition */ + if (be32_to_cpu(part->len) & 1) + (*pparts)[i].mask_flags = MTD_WRITEABLE; + + if (names && (plen > 0)) { + int len = strlen(names) + 1; + + (*pparts)[i].name = (char *)names; + plen -= len; + names += len; + } else { + (*pparts)[i].name = "unnamed"; + } + + part++; + } + + return nr_parts; +} + +static struct mtd_part_parser ofoldpart_parser = { + .owner = THIS_MODULE, + .parse_fn = parse_ofoldpart_partitions, + .name = "ofoldpart", +}; + static int __init ofpart_parser_init(void) { - return register_mtd_parser(&ofpart_parser); + int rc; + rc = register_mtd_parser(&ofpart_parser); + if (rc) + goto out; + + rc = register_mtd_parser(&ofoldpart_parser); + if (!rc) + return 0; + + deregister_mtd_parser(&ofoldpart_parser); +out: + return rc; } module_init(ofpart_parser_init); -- cgit v0.10.2 From f44dcbd06236ecc610bd03abeceac77a21cb019e Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:59 +0400 Subject: mtd: physmap_of.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index 55c4e2e..7d65f9d 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -34,13 +34,10 @@ struct of_flash_list { struct of_flash { struct mtd_info *cmtd; - struct mtd_partition *parts; int list_size; /* number of elements in of_flash_list */ struct of_flash_list list[0]; }; -#define OF_FLASH_PARTS(info) ((info)->parts) - static int of_flash_remove(struct platform_device *dev) { struct of_flash *info; @@ -56,11 +53,8 @@ static int of_flash_remove(struct platform_device *dev) mtd_concat_destroy(info->cmtd); } - if (info->cmtd) { - if (OF_FLASH_PARTS(info)) - kfree(OF_FLASH_PARTS(info)); + if (info->cmtd) mtd_device_unregister(info->cmtd); - } for (i = 0; i < info->list_size; i++) { if (info->list[i].mtd) @@ -290,16 +284,10 @@ static int __devinit of_flash_probe(struct platform_device *dev) ppdata.of_node = dp; part_probe_types = of_get_probes(dp); - err = parse_mtd_partitions(info->cmtd, part_probe_types, - &info->parts, &ppdata); - if (err < 0) { - of_free_probes(part_probe_types); - goto err_out; - } + mtd_device_parse_register(info->cmtd, part_probe_types, &ppdata, + NULL, 0); of_free_probes(part_probe_types); - mtd_device_register(info->cmtd, info->parts, err); - kfree(mtd_list); return 0; -- cgit v0.10.2 From 871770b5c857aa39e87785726ce3ec5a41cd387a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 17:59:16 +0400 Subject: mtd: m25p80.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 399c234..66a3555 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -88,7 +88,6 @@ struct m25p { struct spi_device *spi; struct mutex lock; struct mtd_info mtd; - unsigned partitioned:1; u16 page_size; u16 addr_width; u8 erase_opcode; @@ -825,8 +824,6 @@ static int __devinit m25p_probe(struct spi_device *spi) struct m25p *flash; struct flash_info *info; unsigned i; - struct mtd_partition *parts = NULL; - int nr_parts = 0; struct mtd_part_parser_data ppdata; /* Platform data helps sort out which chip type we have, as @@ -970,28 +967,9 @@ static int __devinit m25p_probe(struct spi_device *spi) /* partitions should match sector boundaries; and it may be good to * use readonly partitions for writeprotected sectors (BP2..BP0). */ - nr_parts = parse_mtd_partitions(&flash->mtd, NULL, &parts, &ppdata); - - if (nr_parts <= 0 && data && data->parts) { - parts = data->parts; - nr_parts = data->nr_parts; - } - - if (nr_parts > 0) { - for (i = 0; i < nr_parts; i++) { - DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = " - "{.name = %s, .offset = 0x%llx, " - ".size = 0x%llx (%lldKiB) }\n", - i, parts[i].name, - (long long)parts[i].offset, - (long long)parts[i].size, - (long long)(parts[i].size >> 10)); - } - flash->partitioned = 1; - } - - return mtd_device_register(&flash->mtd, parts, nr_parts) == 1 ? - -ENODEV : 0; + return mtd_device_parse_register(&flash->mtd, NULL, &ppdata, + data ? data->parts : NULL, + data ? data->nr_parts : 0); } -- cgit v0.10.2 From 99add4228fce515fe113282147a0aab74afa29ae Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:36 +0400 Subject: mtd: fsl_elbc_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 4d225ba..915b4a4 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -843,7 +843,6 @@ static int __devinit fsl_elbc_nand_probe(struct platform_device *pdev) struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl; static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", "ofpart", NULL }; - struct mtd_partition *parts; int ret; int bank; struct device *dev; @@ -936,11 +935,8 @@ static int __devinit fsl_elbc_nand_probe(struct platform_device *pdev) /* First look for RedBoot table or partitions on the command * line, these take precedence over device tree information */ - ret = parse_mtd_partitions(&priv->mtd, part_probe_types, &parts, &ppdata); - if (ret < 0) - goto err; - - mtd_device_register(&priv->mtd, parts, ret); + mtd_device_parse_register(&priv->mtd, part_probe_types, &ppdata, + NULL, 0); printk(KERN_INFO "eLBC NAND device at 0x%llx, bank %d\n", (unsigned long long)res.start, priv->bank); -- cgit v0.10.2 From 73f36b3e251888ef224a3c90d3c408e02a1eb957 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:37 +0400 Subject: mtd: fsl_upm.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index 714d831..da92fed 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -193,9 +193,7 @@ static int __devinit fun_chip_init(struct fsl_upm_nand *fun, goto err; ppdata.of_node = flash_np; - ret = parse_mtd_partitions(&fun->mtd, NULL, &fun->parts, &ppdata); - - ret = mtd_device_register(&fun->mtd, fun->parts, ret); + ret = mtd_device_parse_register(&fun->mtd, NULL, &ppdata, NULL, 0); err: of_node_put(flash_np); return ret; -- cgit v0.10.2 From a9093f064eb053c1b9fca8b8026577c0b3b9aa8a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:42 +0400 Subject: mtd: mpc5121_nfc.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index 9380f96..5ede647 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -654,7 +654,6 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op) struct mpc5121_nfc_prv *prv; struct resource res; struct mtd_info *mtd; - struct mtd_partition *parts; struct nand_chip *chip; unsigned long regs_paddr, regs_size; const __be32 *chips_no; @@ -838,15 +837,7 @@ static int __devinit mpc5121_nfc_probe(struct platform_device *op) dev_set_drvdata(dev, mtd); /* Register device in MTD */ - retval = parse_mtd_partitions(mtd, NULL, &parts, &ppdata); - if (retval < 0) { - dev_err(dev, "Error parsing MTD partitions!\n"); - devm_free_irq(dev, prv->irq, mtd); - retval = -EINVAL; - goto error; - } - - retval = mtd_device_register(mtd, parts, retval); + retval = mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0); if (retval) { dev_err(dev, "Error adding MTD device!\n"); devm_free_irq(dev, prv->irq, mtd); -- cgit v0.10.2 From a9106497082c5b9d2b367159573127c2c9ced4b6 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:00:51 +0400 Subject: mtd: ndfc.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index 1528734..ee17139 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -42,7 +42,6 @@ struct ndfc_controller { struct nand_chip chip; int chip_select; struct nand_hw_control ndfc_control; - struct mtd_partition *parts; }; static struct ndfc_controller ndfc_ctrl[NDFC_MAX_CS]; @@ -201,11 +200,7 @@ static int ndfc_chip_init(struct ndfc_controller *ndfc, if (ret) goto err; - ret = parse_mtd_partitions(&ndfc->mtd, NULL, &ndfc->parts, &ppdata); - if (ret < 0) - goto err; - - ret = mtd_device_register(&ndfc->mtd, ndfc->parts, ret); + ret = mtd_device_parse_register(&ndfc->mtd, NULL, &ppdata, NULL, 0); err: of_node_put(flash_np); -- cgit v0.10.2 From b2a5a4878e97119e3b64d4646fd138820d513c28 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 2 Jun 2011 18:01:07 +0400 Subject: mtd: socrates_nand.c: use mtd_device_parse_register Replace custom invocations of parse_mtd_partitions and mtd_device_register with common mtd_device_parse_register call. This would bring: standard handling of all errors, fallback to default partitions, etc. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/socrates_nand.c b/drivers/mtd/nand/socrates_nand.c index f4f79ec..0fb24f9 100644 --- a/drivers/mtd/nand/socrates_nand.c +++ b/drivers/mtd/nand/socrates_nand.c @@ -164,8 +164,6 @@ static int __devinit socrates_nand_probe(struct platform_device *ofdev) struct mtd_info *mtd; struct nand_chip *nand_chip; int res; - struct mtd_partition *partitions = NULL; - int num_partitions = 0; struct mtd_part_parser_data ppdata; /* Allocate memory for the device structure (and zero it) */ @@ -225,17 +223,10 @@ static int __devinit socrates_nand_probe(struct platform_device *ofdev) goto out; } - num_partitions = parse_mtd_partitions(mtd, NULL, &partitions, &ppdata); - if (num_partitions < 0) { - res = num_partitions; - goto release; - } - - res = mtd_device_register(mtd, partitions, num_partitions); + res = mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0); if (!res) return res; -release: nand_release(mtd); out: -- cgit v0.10.2 From e1c10243df92822954b9b5e04d12dd2f23a39652 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Wed, 22 Jun 2011 14:16:49 +0900 Subject: mtd: OneNAND: Detect the correct NOP when 4KiB pagesize There are two different 4KiB pagesize chips KFM4G16Q4M series have NOP 4 with version ID 0x0131 But KFM4G16Q5M has NOP 1 with versoin ID 0x013e Note that Q5M means that it has NOP 1. Signed-off-by: Kyungmin Park Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index ac9e959..51800a7 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -3429,6 +3429,19 @@ static void onenand_check_features(struct mtd_info *mtd) else if (numbufs == 1) { this->options |= ONENAND_HAS_4KB_PAGE; this->options |= ONENAND_HAS_CACHE_PROGRAM; + /* + * There are two different 4KiB pagesize chips + * and no way to detect it by H/W config values. + * + * To detect the correct NOP for each chips, + * It should check the version ID as workaround. + * + * Now it has as following + * KFM4G16Q4M has NOP 4 with version ID 0x0131 + * KFM4G16Q5M has NOP 1 with versoin ID 0x013e + */ + if ((this->version_id & 0xf) == 0xe) + this->options |= ONENAND_HAS_NOP_1; } case ONENAND_DEVICE_DENSITY_2Gb: @@ -4054,6 +4067,8 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) this->ecclayout = &onenand_oob_128; mtd->subpage_sft = 2; } + if (ONENAND_IS_NOP_1(this)) + mtd->subpage_sft = 0; break; case 64: this->ecclayout = &onenand_oob_64; diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index 52b6f18..4596503 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -184,6 +184,9 @@ struct onenand_chip { #define ONENAND_IS_CACHE_PROGRAM(this) \ (this->options & ONENAND_HAS_CACHE_PROGRAM) +#define ONENAND_IS_NOP_1(this) \ + (this->options & ONENAND_HAS_NOP_1) + /* Check byte access in OneNAND */ #define ONENAND_CHECK_BYTE_ACCESS(addr) (addr & 0x1) @@ -195,6 +198,7 @@ struct onenand_chip { #define ONENAND_HAS_2PLANE (0x0004) #define ONENAND_HAS_4KB_PAGE (0x0008) #define ONENAND_HAS_CACHE_PROGRAM (0x0010) +#define ONENAND_HAS_NOP_1 (0x0020) #define ONENAND_SKIP_UNLOCK_CHECK (0x0100) #define ONENAND_PAGEBUF_ALLOC (0x1000) #define ONENAND_OOBBUF_ALLOC (0x2000) -- cgit v0.10.2 From ed764db2887aa90efb8c5a5d79775d5d18c26b27 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 23 Jun 2011 12:33:52 +0400 Subject: mtd: maps: drop edb7312 support EDB7312 isn't supported by mainline kernel, this driver wasn't working before recent fixes, the same functionality can be achieved via physmap, so drop it now. If the board support will ever be submitted to mainline, one either can revert this commit, or use physmap mtd map driver. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 46eca3b..891a9e6 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -392,13 +392,6 @@ config MTD_AUTCPU12 This enables access to the NV-RAM on autronix autcpu12 board. If you have such a board, say 'Y'. -config MTD_EDB7312 - tristate "CFI Flash device mapped on EDB7312" - depends on ARCH_EDB7312 && MTD_CFI - help - This enables access to the CFI Flash on the Cogent EDB7312 board. - If you have such a board, say 'Y' here. - config MTD_IMPA7 tristate "JEDEC Flash device mapped on impA7" depends on ARM && MTD_JEDECPROBE diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index d6379fe..45dcb8b 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -39,7 +39,6 @@ obj-$(CONFIG_MTD_DBOX2) += dbox2-flash.o obj-$(CONFIG_MTD_SOLUTIONENGINE)+= solutionengine.o obj-$(CONFIG_MTD_PCI) += pci.o obj-$(CONFIG_MTD_AUTCPU12) += autcpu12-nvram.o -obj-$(CONFIG_MTD_EDB7312) += edb7312.o obj-$(CONFIG_MTD_IMPA7) += impa7.o obj-$(CONFIG_MTD_FORTUNET) += fortunet.o obj-$(CONFIG_MTD_UCLINUX) += uclinux.o diff --git a/drivers/mtd/maps/edb7312.c b/drivers/mtd/maps/edb7312.c deleted file mode 100644 index b07acd6..0000000 --- a/drivers/mtd/maps/edb7312.c +++ /dev/null @@ -1,135 +0,0 @@ -/* - * Handle mapping of the NOR flash on Cogent EDB7312 boards - * - * Copyright 2002 SYSGO Real-Time Solutions GmbH - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#define WINDOW_ADDR 0x00000000 /* physical properties of flash */ -#define WINDOW_SIZE 0x01000000 -#define BUSWIDTH 2 -#define FLASH_BLOCKSIZE_MAIN 0x20000 -#define FLASH_NUMBLOCKS_MAIN 128 -/* can be "cfi_probe", "jedec_probe", "map_rom", NULL }; */ -#define PROBETYPES { "cfi_probe", NULL } - -#define MSG_PREFIX "EDB7312-NOR:" /* prefix for our printk()'s */ -#define MTDID "edb7312-nor" /* for mtdparts= partitioning */ - -static struct mtd_info *mymtd; - -struct map_info edb7312nor_map = { - .name = "NOR flash on EDB7312", - .size = WINDOW_SIZE, - .bankwidth = BUSWIDTH, - .phys = WINDOW_ADDR, -}; - -/* - * MTD partitioning stuff - */ -static struct mtd_partition static_partitions[3] = -{ - { - .name = "ARMboot", - .size = 0x40000, - .offset = 0 - }, - { - .name = "Kernel", - .size = 0x200000, - .offset = 0x40000 - }, - { - .name = "RootFS", - .size = 0xDC0000, - .offset = 0x240000 - }, -}; - -static const char *probes[] = { "RedBoot", "cmdlinepart", NULL }; - -static int mtd_parts_nb = 0; -static struct mtd_partition *mtd_parts = 0; - -static int __init init_edb7312nor(void) -{ - static const char *rom_probe_types[] = PROBETYPES; - const char **type; - const char *part_type = 0; - - printk(KERN_NOTICE MSG_PREFIX "0x%08x at 0x%08x\n", - WINDOW_SIZE, WINDOW_ADDR); - edb7312nor_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); - - if (!edb7312nor_map.virt) { - printk(MSG_PREFIX "failed to ioremap\n"); - return -EIO; - } - - simple_map_init(&edb7312nor_map); - - mymtd = 0; - type = rom_probe_types; - for(; !mymtd && *type; type++) { - mymtd = do_map_probe(*type, &edb7312nor_map); - } - if (mymtd) { - mymtd->owner = THIS_MODULE; - mymtd->name = MTDID; - - mtd_parts_nb = parse_mtd_partitions(mymtd, probes, &mtd_parts, 0); - if (mtd_parts_nb > 0) - part_type = "detected"; - - if (mtd_parts_nb == 0) { - mtd_parts = static_partitions; - mtd_parts_nb = ARRAY_SIZE(static_partitions); - part_type = "static"; - } - - if (mtd_parts_nb == 0) - printk(KERN_NOTICE MSG_PREFIX "no partition info available\n"); - else - printk(KERN_NOTICE MSG_PREFIX - "using %s partition definition\n", part_type); - /* Register the whole device first. */ - mtd_device_register(mymtd, NULL, 0); - mtd_device_register(mymtd, mtd_parts, mtd_parts_nb); - return 0; - } - - iounmap((void *)edb7312nor_map.virt); - return -ENXIO; -} - -static void __exit cleanup_edb7312nor(void) -{ - if (mymtd) { - mtd_device_unregister(mymtd); - map_destroy(mymtd); - } - if (edb7312nor_map.virt) { - iounmap((void *)edb7312nor_map.virt); - edb7312nor_map.virt = 0; - } -} - -module_init(init_edb7312nor); -module_exit(cleanup_edb7312nor); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Marius Groeger "); -MODULE_DESCRIPTION("Generic configurable MTD map driver"); -- cgit v0.10.2 From 050f01258319f2d2e66a131b7ddb6b5df5aa3af7 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 23 Jun 2011 12:33:52 +0400 Subject: mtd: nand: drop edb7312 support EDB7312 isn't supported by mainline kernel, so drop it now. If the board support will ever be submitted to mainline, one can revert this commit. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 4c34252..17235d0 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -83,13 +83,6 @@ config MTD_NAND_DENALI_SCRATCH_REG_ADDR scratch register here to enable this feature. On Intel Moorestown boards, the scratch register is at 0xFF108018. -config MTD_NAND_EDB7312 - tristate "Support for Cirrus Logic EBD7312 evaluation board" - depends on ARCH_EDB7312 - help - This enables the driver for the Cirrus Logic EBD7312 evaluation - board to access the onboard NAND Flash. - config MTD_NAND_H1900 tristate "iPAQ H1900 flash" depends on ARCH_PXA diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 5745d83..c9334e9 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -13,7 +13,6 @@ obj-$(CONFIG_MTD_NAND_SPIA) += spia.o obj-$(CONFIG_MTD_NAND_AMS_DELTA) += ams-delta.o obj-$(CONFIG_MTD_NAND_AUTCPU12) += autcpu12.o obj-$(CONFIG_MTD_NAND_DENALI) += denali.o -obj-$(CONFIG_MTD_NAND_EDB7312) += edb7312.o obj-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o obj-$(CONFIG_MTD_NAND_BF5XX) += bf5xx_nand.o obj-$(CONFIG_MTD_NAND_PPCHAMELEONEVB) += ppchameleonevb.o diff --git a/drivers/mtd/nand/edb7312.c b/drivers/mtd/nand/edb7312.c deleted file mode 100644 index 0b1bb91..0000000 --- a/drivers/mtd/nand/edb7312.c +++ /dev/null @@ -1,188 +0,0 @@ -/* - * drivers/mtd/nand/edb7312.c - * - * Copyright (C) 2002 Marius Gröger (mag@sysgo.de) - * - * Derived from drivers/mtd/nand/autcpu12.c - * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Overview: - * This is a device driver for the NAND flash device found on the - * CLEP7312 board which utilizes the Toshiba TC58V64AFT part. This is - * a 64Mibit (8MiB x 8 bits) NAND flash device. - */ - -#include -#include -#include -#include -#include -#include -#include -#include /* for CLPS7111_VIRT_BASE */ -#include -#include - -/* - * MTD structure for EDB7312 board - */ -static struct mtd_info *ep7312_mtd = NULL; - -/* - * Values specific to the EDB7312 board (used with EP7312 processor) - */ -#define EP7312_FIO_PBASE 0x10000000 /* Phys address of flash */ -#define EP7312_PXDR 0x0001 /* - * IO offset to Port B data register - * where the CLE, ALE and NCE pins - * are wired to. - */ -#define EP7312_PXDDR 0x0041 /* - * IO offset to Port B data direction - * register so we can control the IO - * lines. - */ - -/* - * Module stuff - */ - -static unsigned long ep7312_fio_pbase = EP7312_FIO_PBASE; -static void __iomem *ep7312_pxdr = (void __iomem *)EP7312_PXDR; -static void __iomem *ep7312_pxddr = (void __iomem *)EP7312_PXDDR; - -/* - * Define static partitions for flash device - */ -static struct mtd_partition partition_info[] = { - {.name = "EP7312 Nand Flash", - .offset = 0, - .size = 8 * 1024 * 1024} -}; - -#define NUM_PARTITIONS 1 - -/* - * hardware specific access to control-lines - * - * NAND_NCE: bit 0 -> bit 6 (bit 7 = 1) - * NAND_CLE: bit 1 -> bit 4 - * NAND_ALE: bit 2 -> bit 5 - */ -static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) -{ - struct nand_chip *chip = mtd->priv; - - if (ctrl & NAND_CTRL_CHANGE) { - unsigned char bits = 0x80; - - bits |= (ctrl & (NAND_CLE | NAND_ALE)) << 3; - bits |= (ctrl & NAND_NCE) ? 0x00 : 0x40; - - clps_writeb((clps_readb(ep7312_pxdr) & 0xF0) | bits, - ep7312_pxdr); - } - if (cmd != NAND_CMD_NONE) - writeb(cmd, chip->IO_ADDR_W); -} - -/* - * read device ready pin - */ -static int ep7312_device_ready(struct mtd_info *mtd) -{ - return 1; -} - -/* - * Main initialization routine - */ -static int __init ep7312_init(void) -{ - struct nand_chip *this; - void __iomem *ep7312_fio_base; - - /* Allocate memory for MTD device structure and private data */ - ep7312_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL); - if (!ep7312_mtd) { - printk("Unable to allocate EDB7312 NAND MTD device structure.\n"); - return -ENOMEM; - } - - /* map physical address */ - ep7312_fio_base = ioremap(ep7312_fio_pbase, SZ_1K); - if (!ep7312_fio_base) { - printk("ioremap EDB7312 NAND flash failed\n"); - kfree(ep7312_mtd); - return -EIO; - } - - /* Get pointer to private data */ - this = (struct nand_chip *)(&ep7312_mtd[1]); - - /* Initialize structures */ - memset(ep7312_mtd, 0, sizeof(struct mtd_info)); - memset(this, 0, sizeof(struct nand_chip)); - - /* Link the private data with the MTD structure */ - ep7312_mtd->priv = this; - ep7312_mtd->owner = THIS_MODULE; - - /* - * Set GPIO Port B control register so that the pins are configured - * to be outputs for controlling the NAND flash. - */ - clps_writeb(0xf0, ep7312_pxddr); - - /* insert callbacks */ - this->IO_ADDR_R = ep7312_fio_base; - this->IO_ADDR_W = ep7312_fio_base; - this->cmd_ctrl = ep7312_hwcontrol; - this->dev_ready = ep7312_device_ready; - /* 15 us command delay time */ - this->chip_delay = 15; - - /* Scan to find existence of the device */ - if (nand_scan(ep7312_mtd, 1)) { - iounmap((void *)ep7312_fio_base); - kfree(ep7312_mtd); - return -ENXIO; - } - ep7312_mtd->name = "edb7312-nand"; - - /* Register the partitions */ - mtd_device_register(ep7312_mtd, NULL, 0, - partition_info, NUM_PARTITIONS); - - /* Return happy */ - return 0; -} - -module_init(ep7312_init); - -/* - * Clean up routine - */ -static void __exit ep7312_cleanup(void) -{ - struct nand_chip *this = (struct nand_chip *)&ep7312_mtd[1]; - - /* Release resources, unregister device */ - nand_release(ap7312_mtd); - - /* Release io resource */ - iounmap(this->IO_ADDR_R); - - /* Free the MTD device structure */ - kfree(ep7312_mtd); -} - -module_exit(ep7312_cleanup); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Marius Groeger "); -MODULE_DESCRIPTION("MTD map driver for Cogent EDB7312 board"); -- cgit v0.10.2 From 3165f44bcd4b987cbcc694af739ab955b561e05b Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 23 Jun 2011 15:23:08 +0400 Subject: mtd: hide parse_mtd_partitions There is no need to export parse_mtd_partitions() now , as it's fully handled by registration functions. So move the definition to private header and remove respective EXPORT_SYMBOL_GPL. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdcore.h b/drivers/mtd/mtdcore.h index 0ed6126..961a384 100644 --- a/drivers/mtd/mtdcore.h +++ b/drivers/mtd/mtdcore.h @@ -15,6 +15,9 @@ extern int del_mtd_device(struct mtd_info *mtd); extern int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int); extern int del_mtd_partitions(struct mtd_info *); +extern int parse_mtd_partitions(struct mtd_info *master, const char **types, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data); #define mtd_for_each_device(mtd) \ for ((mtd) = __mtd_next_device(0); \ diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 9e8ee05..6997c6c 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -778,7 +778,6 @@ int parse_mtd_partitions(struct mtd_info *master, const char **types, } return ret; } -EXPORT_SYMBOL_GPL(parse_mtd_partitions); int mtd_is_partition(struct mtd_info *mtd) { diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index a8a961a..c98d6b8 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -78,9 +78,6 @@ struct mtd_part_parser { extern int register_mtd_parser(struct mtd_part_parser *parser); extern int deregister_mtd_parser(struct mtd_part_parser *parser); -extern int parse_mtd_partitions(struct mtd_info *master, const char **types, - struct mtd_partition **pparts, - struct mtd_part_parser_data *data); #define put_partition_parser(p) do { module_put((p)->owner); } while(0) -- cgit v0.10.2 From 953b3bd1911260b8acd8f35fa26440c1a943e59a Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 23 Jun 2011 15:26:14 +0400 Subject: mtd: remove put_partition_parser() from public header There is no need to pollute public header with a definition private to mtdpart.c. Move it from mtd/partitions.h to mtdpart.c Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 6997c6c..c90b7ba 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -706,6 +706,8 @@ static struct mtd_part_parser *get_partition_parser(const char *name) return ret; } +#define put_partition_parser(p) do { module_put((p)->owner); } while (0) + int register_mtd_parser(struct mtd_part_parser *p) { spin_lock(&part_parser_lock); diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index c98d6b8..2475228 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -79,8 +79,6 @@ struct mtd_part_parser { extern int register_mtd_parser(struct mtd_part_parser *parser); extern int deregister_mtd_parser(struct mtd_part_parser *parser); -#define put_partition_parser(p) do { module_put((p)->owner); } while(0) - int mtd_is_partition(struct mtd_info *mtd); int mtd_add_partition(struct mtd_info *master, char *name, long long offset, long long length); -- cgit v0.10.2 From 15c60a508ab3393e68b7ccb3528981ccacf9c0f9 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 23 Jun 2011 15:33:15 +0400 Subject: mtd: drop mtd_device_register mtd_device_register() is a limited version of mtd_device_parse_register. Replace it with macro calling mtd_device_parse_register(). Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index e186399..f9cc2d2 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -429,29 +429,6 @@ out_error: } /** - * mtd_device_register - register an MTD device. - * - * @master: the MTD device to register - * @parts: the partitions to register - only valid if nr_parts > 0 - * @nr_parts: the number of partitions in parts. If zero then the full MTD - * device is registered - * - * Register an MTD device with the system and optionally, a number of - * partitions. If nr_parts is 0 then the whole device is registered, otherwise - * only the partitions are registered. To register both the full device *and* - * the partitions, call mtd_device_register() twice, once with nr_parts == 0 - * and once equal to the number of partitions. - */ -int mtd_device_register(struct mtd_info *master, - const struct mtd_partition *parts, - int nr_parts) -{ - return parts ? add_mtd_partitions(master, parts, nr_parts) : - add_mtd_device(master); -} -EXPORT_SYMBOL_GPL(mtd_device_register); - -/** * mtd_device_parse_register - parse partitions and register an MTD device. * * @mtd: the MTD device to register diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index b2b454b..67774f9 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -325,14 +325,13 @@ static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd) struct mtd_partition; struct mtd_part_parser_data; -extern int mtd_device_register(struct mtd_info *master, - const struct mtd_partition *parts, - int nr_parts); extern int mtd_device_parse_register(struct mtd_info *mtd, const char **part_probe_types, struct mtd_part_parser_data *parser_data, const struct mtd_partition *defparts, int defnr_parts); +#define mtd_device_register(master, parts, nr_parts) \ + mtd_device_parse_register(master, NULL, NULL, parts, nr_parts) extern int mtd_device_unregister(struct mtd_info *master); extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num); extern int __get_mtd_device(struct mtd_info *mtd); -- cgit v0.10.2 From 7854d3f7495b11be1570cd3e2318674d8f9ed797 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Thu, 23 Jun 2011 14:12:08 -0700 Subject: mtd: spelling, capitalization, uniformity Therefor -> Therefore [Intern], [Internal] -> [INTERN] [REPLACABLE] -> [REPLACEABLE] syndrom, syndom -> syndrome ecc -> ECC buswith -> buswidth endianess -> endianness dont -> don't occures -> occurs independend -> independent wihin -> within erease -> erase blockes -> blocks ... Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c index ea832ea..d40c410 100644 --- a/drivers/mtd/chips/jedec_probe.c +++ b/drivers/mtd/chips/jedec_probe.c @@ -1914,7 +1914,7 @@ static void jedec_reset(u32 base, struct map_info *map, struct cfi_private *cfi) * (oh and incidentaly the jedec spec - 3.5.3.3) the reset * sequence is *supposed* to be 0xaa at 0x5555, 0x55 at * 0x2aaa, 0xF0 at 0x5555 this will not affect the AMD chips - * as they will ignore the writes and dont care what address + * as they will ignore the writes and don't care what address * the F0 is written to */ if (cfi->addr_unlock1) { DEBUG( MTD_DEBUG_LEVEL3, diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c index f7fbf60..ed15447 100644 --- a/drivers/mtd/devices/doc2000.c +++ b/drivers/mtd/devices/doc2000.c @@ -699,7 +699,7 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len, #ifdef ECC_DEBUG printk(KERN_ERR "DiskOnChip ECC Error: Read at %lx\n", (long)from); #endif - /* Read the ECC syndrom through the DiskOnChip ECC + /* Read the ECC syndrome through the DiskOnChip ECC logic. These syndrome will be all ZERO when there is no error */ for (i = 0; i < 6; i++) { diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c index 241192f..c6ea860 100644 --- a/drivers/mtd/devices/doc2001.c +++ b/drivers/mtd/devices/doc2001.c @@ -464,7 +464,7 @@ static int doc_read (struct mtd_info *mtd, loff_t from, size_t len, #ifdef ECC_DEBUG printk("DiskOnChip ECC Error: Read at %lx\n", (long)from); #endif - /* Read the ECC syndrom through the DiskOnChip ECC logic. + /* Read the ECC syndrome through the DiskOnChip ECC logic. These syndrome will be all ZERO when there is no error */ for (i = 0; i < 6; i++) { syndrome[i] = ReadDOC(docptr, ECCSyndrome0 + i); diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c index 09ae0ad..fe82fbf 100644 --- a/drivers/mtd/devices/doc2001plus.c +++ b/drivers/mtd/devices/doc2001plus.c @@ -655,7 +655,7 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len, #ifdef ECC_DEBUG printk("DiskOnChip ECC Error: Read at %lx\n", (long)from); #endif - /* Read the ECC syndrom through the DiskOnChip ECC logic. + /* Read the ECC syndrome through the DiskOnChip ECC logic. These syndrome will be all ZERO when there is no error */ for (i = 0; i < 6; i++) syndrome[i] = ReadDOC(docptr, Mplus_ECCSyndrome0 + i); diff --git a/drivers/mtd/devices/docecc.c b/drivers/mtd/devices/docecc.c index 37ef29a..4a1c39b 100644 --- a/drivers/mtd/devices/docecc.c +++ b/drivers/mtd/devices/docecc.c @@ -2,7 +2,7 @@ * ECC algorithm for M-systems disk on chip. We use the excellent Reed * Solmon code of Phil Karn (karn@ka9q.ampr.org) available under the * GNU GPL License. The rest is simply to convert the disk on chip - * syndrom into a standard syndom. + * syndrome into a standard syndome. * * Author: Fabrice Bellard (fabrice.bellard@netgem.com) * Copyright (C) 2000 Netgem S.A. diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 49e20a4..c60067b 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -233,9 +233,9 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t default: ret = mtd->read(mtd, *ppos, len, &retlen, kbuf); } - /* Nand returns -EBADMSG on ecc errors, but it returns + /* Nand returns -EBADMSG on ECC errors, but it returns * the data. For our userspace tools it is important - * to dump areas with ecc errors ! + * to dump areas with ECC errors! * For kernel internal usage it also might return -EUCLEAN * to signal the caller that a bitflip has occurred and has * been corrected by the ECC algorithm. @@ -883,7 +883,7 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) } #endif - /* This ioctl is being deprecated - it truncates the ecc layout */ + /* This ioctl is being deprecated - it truncates the ECC layout */ case ECCGETLAYOUT: { struct nand_ecclayout_user *usrlay; diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c index e7767ee..60d58d3 100644 --- a/drivers/mtd/nand/au1550nd.c +++ b/drivers/mtd/nand/au1550nd.c @@ -48,7 +48,7 @@ static const struct mtd_partition partition_info[] = { * au_read_byte - read one byte from the chip * @mtd: MTD device structure * - * read function for 8bit buswith + * read function for 8bit buswidth */ static u_char au_read_byte(struct mtd_info *mtd) { @@ -63,7 +63,7 @@ static u_char au_read_byte(struct mtd_info *mtd) * @mtd: MTD device structure * @byte: pointer to data byte to write * - * write function for 8it buswith + * write function for 8it buswidth */ static void au_write_byte(struct mtd_info *mtd, u_char byte) { @@ -73,11 +73,10 @@ static void au_write_byte(struct mtd_info *mtd, u_char byte) } /** - * au_read_byte16 - read one byte endianess aware from the chip + * au_read_byte16 - read one byte endianness aware from the chip * @mtd: MTD device structure * - * read function for 16bit buswith with - * endianess conversion + * read function for 16bit buswidth with endianness conversion */ static u_char au_read_byte16(struct mtd_info *mtd) { @@ -88,12 +87,11 @@ static u_char au_read_byte16(struct mtd_info *mtd) } /** - * au_write_byte16 - write one byte endianess aware to the chip + * au_write_byte16 - write one byte endianness aware to the chip * @mtd: MTD device structure * @byte: pointer to data byte to write * - * write function for 16bit buswith with - * endianess conversion + * write function for 16bit buswidth with endianness conversion */ static void au_write_byte16(struct mtd_info *mtd, u_char byte) { @@ -106,8 +104,7 @@ static void au_write_byte16(struct mtd_info *mtd, u_char byte) * au_read_word - read one word from the chip * @mtd: MTD device structure * - * read function for 16bit buswith without - * endianess conversion + * read function for 16bit buswidth without endianness conversion */ static u16 au_read_word(struct mtd_info *mtd) { @@ -123,7 +120,7 @@ static u16 au_read_word(struct mtd_info *mtd) * @buf: data buffer * @len: number of bytes to write * - * write function for 8bit buswith + * write function for 8bit buswidth */ static void au_write_buf(struct mtd_info *mtd, const u_char *buf, int len) { @@ -142,7 +139,7 @@ static void au_write_buf(struct mtd_info *mtd, const u_char *buf, int len) * @buf: buffer to store date * @len: number of bytes to read * - * read function for 8bit buswith + * read function for 8bit buswidth */ static void au_read_buf(struct mtd_info *mtd, u_char *buf, int len) { @@ -161,7 +158,7 @@ static void au_read_buf(struct mtd_info *mtd, u_char *buf, int len) * @buf: buffer containing the data to compare * @len: number of bytes to compare * - * verify function for 8bit buswith + * verify function for 8bit buswidth */ static int au_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) { @@ -183,7 +180,7 @@ static int au_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) * @buf: data buffer * @len: number of bytes to write * - * write function for 16bit buswith + * write function for 16bit buswidth */ static void au_write_buf16(struct mtd_info *mtd, const u_char *buf, int len) { @@ -205,7 +202,7 @@ static void au_write_buf16(struct mtd_info *mtd, const u_char *buf, int len) * @buf: buffer to store date * @len: number of bytes to read * - * read function for 16bit buswith + * read function for 16bit buswidth */ static void au_read_buf16(struct mtd_info *mtd, u_char *buf, int len) { @@ -226,7 +223,7 @@ static void au_read_buf16(struct mtd_info *mtd, u_char *buf, int len) * @buf: buffer containing the data to compare * @len: number of bytes to compare * - * verify function for 16bit buswith + * verify function for 16bit buswidth */ static int au_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len) { diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index f6eb664..11a56df 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -370,7 +370,7 @@ static int cafe_nand_read_oob(struct mtd_info *mtd, struct nand_chip *chip, return 1; } /** - * cafe_nand_read_page_syndrome - {REPLACABLE] hardware ecc syndrom based page read + * cafe_nand_read_page_syndrome - [REPLACEABLE] hardware ecc syndrome based page read * @mtd: mtd info structure * @chip: nand chip info structure * @buf: buffer to store read data diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index b657d7f..de93a98 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -132,7 +132,7 @@ static struct rs_control *rs_decoder; /* * The HW decoder in the DoC ASIC's provides us a error syndrome, - * which we must convert to a standard syndrom usable by the generic + * which we must convert to a standard syndrome usable by the generic * Reed-Solomon library code. * * Fabrice Bellard figured this out in the old docecc code. I added @@ -153,7 +153,7 @@ static int doc_ecc_decode(struct rs_control *rs, uint8_t *data, uint8_t *ecc) ds[3] = ((ecc[3] & 0xc0) >> 6) | ((ecc[0] & 0xff) << 2); parity = ecc[1]; - /* Initialize the syndrom buffer */ + /* Initialize the syndrome buffer */ for (i = 0; i < NROOTS; i++) s[i] = ds[0]; /* diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 408e1d0a..237d7da 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -21,7 +21,7 @@ * TODO: * Enable cached programming for 2k page size chips * Check, if mtd->ecctype should be set to MTD_ECC_HW - * if we have HW ecc support. + * if we have HW ECC support. * The AG-AND chips have nice features for speed improvement, * which are not supported yet. Read / program 4 pages in one go. * BBT table is not serialized, has to be fixed @@ -159,7 +159,7 @@ static void nand_release_device(struct mtd_info *mtd) * nand_read_byte - [DEFAULT] read one byte from the chip * @mtd: MTD device structure * - * Default read function for 8bit buswith. + * Default read function for 8bit buswidth */ static uint8_t nand_read_byte(struct mtd_info *mtd) { @@ -169,9 +169,11 @@ static uint8_t nand_read_byte(struct mtd_info *mtd) /** * nand_read_byte16 - [DEFAULT] read one byte endianess aware from the chip + * nand_read_byte16 - [DEFAULT] read one byte endianness aware from the chip * @mtd: MTD device structure * - * Default read function for 16bit buswith with endianess conversion. + * Default read function for 16bit buswidth with endianness conversion. + * */ static uint8_t nand_read_byte16(struct mtd_info *mtd) { @@ -183,7 +185,7 @@ static uint8_t nand_read_byte16(struct mtd_info *mtd) * nand_read_word - [DEFAULT] read one word from the chip * @mtd: MTD device structure * - * Default read function for 16bit buswith without endianess conversion. + * Default read function for 16bit buswidth without endianness conversion. */ static u16 nand_read_word(struct mtd_info *mtd) { @@ -220,7 +222,7 @@ static void nand_select_chip(struct mtd_info *mtd, int chipnr) * @buf: data buffer * @len: number of bytes to write * - * Default write function for 8bit buswith. + * Default write function for 8bit buswidth. */ static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -237,7 +239,7 @@ static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) * @buf: buffer to store date * @len: number of bytes to read * - * Default read function for 8bit buswith. + * Default read function for 8bit buswidth. */ static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) { @@ -254,7 +256,7 @@ static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) * @buf: buffer containing the data to compare * @len: number of bytes to compare * - * Default verify function for 8bit buswith. + * Default verify function for 8bit buswidth. */ static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -273,7 +275,7 @@ static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len) * @buf: data buffer * @len: number of bytes to write * - * Default write function for 16bit buswith. + * Default write function for 16bit buswidth. */ static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -293,7 +295,7 @@ static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) * @buf: buffer to store date * @len: number of bytes to read * - * Default read function for 16bit buswith. + * Default read function for 16bit buswidth. */ static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len) { @@ -312,7 +314,7 @@ static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len) * @buf: buffer containing the data to compare * @len: number of bytes to compare * - * Default verify function for 16bit buswith. + * Default verify function for 16bit buswidth. */ static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len) { @@ -499,7 +501,7 @@ static void panic_nand_wait_ready(struct mtd_info *mtd, unsigned long timeo) } } -/* Wait for the ready pin, after a command. The timeout is catched later */ +/* Wait for the ready pin, after a command. The timeout is caught later. */ void nand_wait_ready(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; @@ -510,7 +512,7 @@ void nand_wait_ready(struct mtd_info *mtd) return panic_nand_wait_ready(mtd, 400); led_trigger_event(nand_led_trigger, LED_FULL); - /* Wait until command is processed or timeout occures */ + /* Wait until command is processed or timeout occurs */ do { if (chip->dev_ready(mtd)) break; @@ -629,8 +631,8 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, * @page_addr: the page address for this command, -1 if none * * Send command to NAND device. This is the version for the new large page - * devices We dont have the separate regions as we have in the small page - * devices. We must emulate NAND_CMD_READOOB to keep the code compatible. + * devices. We don't have the separate regions as we have in the small page + * devices. We must emulate NAND_CMD_READOOB to keep the code compatible. */ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, int column, int page_addr) @@ -754,7 +756,7 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, static void panic_nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state) { - /* Hardware controller shared among independend devices */ + /* Hardware controller shared among independent devices */ chip->controller->active = chip; chip->state = new_state; } @@ -1032,14 +1034,13 @@ out: EXPORT_SYMBOL(nand_lock); /** - * nand_read_page_raw - [Intern] read raw page data without ecc + * nand_read_page_raw - [INTERN] read raw page data without ecc * @mtd: mtd info structure * @chip: nand chip info structure * @buf: buffer to store read data * @page: page number to read * - * Not for syndrome calculating ecc controllers, which use a special oob - * layout. + * Not for syndrome calculating ECC controllers, which use a special oob layout. */ static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int page) @@ -1050,7 +1051,7 @@ static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_read_page_raw_syndrome - [Intern] read raw page data without ecc + * nand_read_page_raw_syndrome - [INTERN] read raw page data without ecc * @mtd: mtd info structure * @chip: nand chip info structure * @buf: buffer to store read data @@ -1093,7 +1094,7 @@ static int nand_read_page_raw_syndrome(struct mtd_info *mtd, } /** - * nand_read_page_swecc - [REPLACABLE] software ecc based page read function + * nand_read_page_swecc - [REPLACEABLE] software ECC based page read function * @mtd: mtd info structure * @chip: nand chip info structure * @buf: buffer to store read data @@ -1134,7 +1135,7 @@ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_read_subpage - [REPLACABLE] software ecc based sub-page read function + * nand_read_subpage - [REPLACEABLE] software ECC based sub-page read function * @mtd: mtd info structure * @chip: nand chip info structure * @data_offs: offset of requested data within the page @@ -1152,7 +1153,7 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, int busw = (chip->options & NAND_BUSWIDTH_16) ? 2 : 1; int index = 0; - /* Column address wihin the page aligned to ECC size (256bytes) */ + /* Column address within the page aligned to ECC size (256bytes) */ start_step = data_offs / chip->ecc.size; end_step = (data_offs + readlen - 1) / chip->ecc.size; num_steps = end_step - start_step + 1; @@ -1175,7 +1176,7 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, /* * The performance is faster if we position offsets according to - * ecc.pos. Let's make sure that there are no gaps in ecc positions. + * ecc.pos. Let's make sure that there are no gaps in ECC positions. */ for (i = 0; i < eccfrag_len - 1; i++) { if (eccpos[i + start_step * chip->ecc.bytes] + 1 != @@ -1189,7 +1190,7 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); } else { /* - * Send the command to read the particular ecc bytes take care + * Send the command to read the particular ECC bytes take care * about buswidth alignment in read_buf. */ index = start_step * chip->ecc.bytes; @@ -1224,14 +1225,13 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_read_page_hwecc - [REPLACABLE] hardware ecc based page read function + * nand_read_page_hwecc - [REPLACEABLE] hardware ECC based page read function * @mtd: mtd info structure * @chip: nand chip info structure * @buf: buffer to store read data * @page: page number to read * - * Not for syndrome calculating ecc controllers which need a special oob - * layout. + * Not for syndrome calculating ECC controllers which need a special oob layout. */ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int page) @@ -1270,7 +1270,7 @@ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_read_page_hwecc_oob_first - [REPLACABLE] hw ecc, read oob first + * nand_read_page_hwecc_oob_first - [REPLACEABLE] hw ecc, read oob first * @mtd: mtd info structure * @chip: nand chip info structure * @buf: buffer to store read data @@ -1318,7 +1318,7 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd, } /** - * nand_read_page_syndrome - [REPLACABLE] hardware ecc syndrom based page read + * nand_read_page_syndrome - [REPLACEABLE] hardware ECC syndrome based page read * @mtd: mtd info structure * @chip: nand chip info structure * @buf: buffer to store read data @@ -1373,7 +1373,7 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_transfer_oob - [Internal] Transfer oob to client buffer + * nand_transfer_oob - [INTERN] Transfer oob to client buffer * @chip: nand chip structure * @oob: oob destination address * @ops: oob ops structure @@ -1421,7 +1421,7 @@ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, } /** - * nand_do_read_ops - [Internal] Read data with ECC + * nand_do_read_ops - [INTERN] Read data with ECC * @mtd: MTD device structure * @from: offset to read from * @ops: oob ops structure @@ -1599,7 +1599,7 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, } /** - * nand_read_oob_std - [REPLACABLE] the most common OOB data read function + * nand_read_oob_std - [REPLACEABLE] the most common OOB data read function * @mtd: mtd info structure * @chip: nand chip info structure * @page: page number to read @@ -1617,7 +1617,7 @@ static int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_read_oob_syndrome - [REPLACABLE] OOB data read function for HW ECC + * nand_read_oob_syndrome - [REPLACEABLE] OOB data read function for HW ECC * with syndromes * @mtd: mtd info structure * @chip: nand chip info structure @@ -1656,7 +1656,7 @@ static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_write_oob_std - [REPLACABLE] the most common OOB data write function + * nand_write_oob_std - [REPLACEABLE] the most common OOB data write function * @mtd: mtd info structure * @chip: nand chip info structure * @page: page number to write @@ -1679,7 +1679,7 @@ static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_write_oob_syndrome - [REPLACABLE] OOB data write function for HW ECC + * nand_write_oob_syndrome - [REPLACEABLE] OOB data write function for HW ECC * with syndrome - only for large page flash * @mtd: mtd info structure * @chip: nand chip info structure @@ -1738,7 +1738,7 @@ static int nand_write_oob_syndrome(struct mtd_info *mtd, } /** - * nand_do_read_oob - [Intern] NAND read out-of-band + * nand_do_read_oob - [INTERN] NAND read out-of-band * @mtd: MTD device structure * @from: offset to read from * @ops: oob operations description structure @@ -1878,13 +1878,12 @@ out: /** - * nand_write_page_raw - [Intern] raw page write function + * nand_write_page_raw - [INTERN] raw page write function * @mtd: mtd info structure * @chip: nand chip info structure * @buf: data buffer * - * Not for syndrome calculating ecc controllers, which use a special oob - * layout. + * Not for syndrome calculating ECC controllers, which use a special oob layout. */ static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf) @@ -1894,7 +1893,7 @@ static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_write_page_raw_syndrome - [Intern] raw page write function + * nand_write_page_raw_syndrome - [INTERN] raw page write function * @mtd: mtd info structure * @chip: nand chip info structure * @buf: data buffer @@ -1933,7 +1932,7 @@ static void nand_write_page_raw_syndrome(struct mtd_info *mtd, chip->write_buf(mtd, oob, size); } /** - * nand_write_page_swecc - [REPLACABLE] software ecc based page write function + * nand_write_page_swecc - [REPLACEABLE] software ECC based page write function * @mtd: mtd info structure * @chip: nand chip info structure * @buf: data buffer @@ -1948,7 +1947,7 @@ static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *p = buf; uint32_t *eccpos = chip->ecc.layout->eccpos; - /* Software ecc calculation */ + /* Software ECC calculation */ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) chip->ecc.calculate(mtd, p, &ecc_calc[i]); @@ -1959,7 +1958,7 @@ static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_write_page_hwecc - [REPLACABLE] hardware ecc based page write function + * nand_write_page_hwecc - [REPLACEABLE] hardware ECC based page write function * @mtd: mtd info structure * @chip: nand chip info structure * @buf: data buffer @@ -1987,7 +1986,7 @@ static void nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_write_page_syndrome - [REPLACABLE] hardware ecc syndrom based page write + * nand_write_page_syndrome - [REPLACEABLE] hardware ECC syndrome based page write * @mtd: mtd info structure * @chip: nand chip info structure * @buf: data buffer @@ -2052,7 +2051,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, chip->ecc.write_page(mtd, chip, buf); /* - * Cached progamming disabled for now, Not sure if its worth the + * Cached progamming disabled for now. Not sure if it's worth the * trouble. The speed gain is not very impressive. (2.3->2.6Mib/s). */ cached = 0; @@ -2087,7 +2086,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, } /** - * nand_fill_oob - [Internal] Transfer client buffer to oob + * nand_fill_oob - [INTERN] Transfer client buffer to oob * @mtd: MTD device structure * @oob: oob data buffer * @len: oob data write length @@ -2145,7 +2144,7 @@ static uint8_t *nand_fill_oob(struct mtd_info *mtd, uint8_t *oob, size_t len, #define NOTALIGNED(x) ((x & (chip->subpagesize - 1)) != 0) /** - * nand_do_write_ops - [Internal] NAND write with ECC + * nand_do_write_ops - [INTERN] NAND write with ECC * @mtd: MTD device structure * @to: offset to write to * @ops: oob operations description structure @@ -2454,7 +2453,7 @@ out: } /** - * single_erease_cmd - [GENERIC] NAND standard block erase command function + * single_erase_cmd - [GENERIC] NAND standard block erase command function * @mtd: MTD device structure * @page: the page address of the block which will be erased * @@ -2469,7 +2468,7 @@ static void single_erase_cmd(struct mtd_info *mtd, int page) } /** - * multi_erease_cmd - [GENERIC] AND specific block erase command function + * multi_erase_cmd - [GENERIC] AND specific block erase command function * @mtd: MTD device structure * @page: the page address of the block which will be erased * @@ -2500,7 +2499,7 @@ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr) #define BBT_PAGE_MASK 0xffffff3f /** - * nand_erase_nand - [Internal] erase block(s) + * nand_erase_nand - [INTERN] erase block(s) * @mtd: MTD device structure * @instr: erase instruction * @allowbbt: allow erasing the bbt area @@ -2550,7 +2549,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, * If BBT requires refresh, set the BBT page mask to see if the BBT * should be rewritten. Otherwise the mask is set to 0xffffffff which * can not be matched. This is also done when the bbt is actually - * erased to avoid recusrsive updates. + * erased to avoid recursive updates. */ if (chip->options & BBT_AUTO_REFRESH && !allowbbt) bbt_masked_page = chip->bbt_td->pages[chipnr] & BBT_PAGE_MASK; @@ -2824,7 +2823,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, int i; int val; - /* Try ONFI for unknow chip or LP */ + /* Try ONFI for unknown chip or LP */ chip->cmdfunc(mtd, NAND_CMD_READID, 0x20, -1); if (chip->read_byte(mtd) != 'O' || chip->read_byte(mtd) != 'N' || chip->read_byte(mtd) != 'F' || chip->read_byte(mtd) != 'I') @@ -3395,7 +3394,7 @@ int nand_scan_tail(struct mtd_info *mtd) */ chip->ecc.steps = mtd->writesize / chip->ecc.size; if (chip->ecc.steps * chip->ecc.size != mtd->writesize) { - printk(KERN_WARNING "Invalid ecc parameters\n"); + printk(KERN_WARNING "Invalid ECC parameters\n"); BUG(); } chip->ecc.total = chip->ecc.steps * chip->ecc.bytes; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 8875d6d..f30807c 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -149,7 +149,7 @@ static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) * add_marker_len - compute the length of the marker in data area * @td: BBT descriptor used for computation * - * The length will be 0 if the markeris located in OOB area. + * The length will be 0 if the marker is located in OOB area. */ static u32 add_marker_len(struct nand_bbt_descr *td) { @@ -170,7 +170,7 @@ static u32 add_marker_len(struct nand_bbt_descr *td) * @buf: temporary buffer * @page: the starting page * @num: the number of bbt descriptors to read - * @td: the bbt describtion table + * @td: the bbt describtion table * @offs: offset in the memory table * * Read the bad block table starting from page. @@ -1241,7 +1241,7 @@ static struct nand_bbt_descr agand_flashbased = { .pattern = scan_agand_pattern }; -/* Generic flash bbt decriptors */ +/* Generic flash bbt descriptors */ static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' }; static uint8_t mirror_pattern[] = {'1', 't', 'b', 'B' }; @@ -1286,7 +1286,7 @@ static struct nand_bbt_descr bbt_mirror_no_bbt_descr = { }; /** - * nand_create_default_bbt_descr - [Internal] Creates a BBT descriptor structure + * nand_create_default_bbt_descr - [INTERN] Creates a BBT descriptor structure * @this: NAND chip to create descriptor for * * This function allocates and initializes a nand_bbt_descr for BBM detection diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c index 271b8e7..b7cfe0d 100644 --- a/drivers/mtd/nand/nand_ecc.c +++ b/drivers/mtd/nand/nand_ecc.c @@ -110,7 +110,7 @@ static const char bitsperbyte[256] = { /* * addressbits is a lookup table to filter out the bits from the xor-ed - * ecc data that identify the faulty location. + * ECC data that identify the faulty location. * this is only used for repairing parity * see the comments in nand_correct_data for more details */ @@ -153,7 +153,7 @@ static const char addressbits[256] = { * __nand_calculate_ecc - [NAND Interface] Calculate 3-byte ECC for 256/512-byte * block * @buf: input buffer with raw data - * @eccsize: data bytes per ecc step (256 or 512) + * @eccsize: data bytes per ECC step (256 or 512) * @code: output buffer with ECC */ void __nand_calculate_ecc(const unsigned char *buf, unsigned int eccsize, @@ -348,7 +348,7 @@ void __nand_calculate_ecc(const unsigned char *buf, unsigned int eccsize, rp17 = (par ^ rp16) & 0xff; /* - * Finally calculate the ecc bits. + * Finally calculate the ECC bits. * Again here it might seem that there are performance optimisations * possible, but benchmarks showed that on the system this is developed * the code below is the fastest @@ -436,7 +436,7 @@ EXPORT_SYMBOL(nand_calculate_ecc); * @buf: raw data read from the chip * @read_ecc: ECC from the chip * @calc_ecc: the ECC calculated from raw data - * @eccsize: data bytes per ecc step (256 or 512) + * @eccsize: data bytes per ECC step (256 or 512) * * Detect and correct a 1 bit error for eccsize byte block */ @@ -505,7 +505,7 @@ int __nand_correct_data(unsigned char *buf, } /* count nr of bits; use table lookup, faster than calculating it */ if ((bitsperbyte[b0] + bitsperbyte[b1] + bitsperbyte[b2]) == 1) - return 1; /* error in ecc data; no action needed */ + return 1; /* error in ECC data; no action needed */ printk(KERN_ERR "uncorrectable error : "); return -1; diff --git a/drivers/mtd/nand/rtc_from4.c b/drivers/mtd/nand/rtc_from4.c index a07da2a..33fe922 100644 --- a/drivers/mtd/nand/rtc_from4.c +++ b/drivers/mtd/nand/rtc_from4.c @@ -351,7 +351,7 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha return 0; } - /* Read the syndrom pattern from the FPGA and correct the bitorder */ + /* Read the syndrome pattern from the FPGA and correct the bitorder */ rs_ecc = (volatile unsigned short *)(rtc_from4_fio_base + RTC_FROM4_RS_ECC); for (i = 0; i < 8; i++) { ecc[i] = bitrev8(*rs_ecc); diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 51800a7..30c652c 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1015,7 +1015,7 @@ static void onenand_release_device(struct mtd_info *mtd) } /** - * onenand_transfer_auto_oob - [Internal] oob auto-placement transfer + * onenand_transfer_auto_oob - [INTERN] oob auto-placement transfer * @param mtd MTD device structure * @param buf destination address * @param column oob offset to read from @@ -1821,7 +1821,7 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len, } /** - * onenand_fill_auto_oob - [Internal] oob auto-placement transfer + * onenand_fill_auto_oob - [INTERN] oob auto-placement transfer * @param mtd MTD device structure * @param oob_buf oob buffer * @param buf source address @@ -2055,7 +2055,7 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, /** - * onenand_write_oob_nolock - [Internal] OneNAND write out-of-band + * onenand_write_oob_nolock - [INTERN] OneNAND write out-of-band * @param mtd MTD device structure * @param to offset to write to * @param len number of bytes to write @@ -2281,7 +2281,7 @@ static int onenand_multiblock_erase_verify(struct mtd_info *mtd, } /** - * onenand_multiblock_erase - [Internal] erase block(s) using multiblock erase + * onenand_multiblock_erase - [INTERN] erase block(s) using multiblock erase * @param mtd MTD device structure * @param instr erase instruction * @param region erase region @@ -2397,7 +2397,7 @@ static int onenand_multiblock_erase(struct mtd_info *mtd, /** - * onenand_block_by_block_erase - [Internal] erase block(s) using regular erase + * onenand_block_by_block_erase - [INTERN] erase block(s) using regular erase * @param mtd MTD device structure * @param instr erase instruction * @param region erase region @@ -2922,7 +2922,7 @@ static int onenand_otp_command(struct mtd_info *mtd, int cmd, loff_t addr, } /** - * onenand_otp_write_oob_nolock - [Internal] OneNAND write out-of-band, specific to OTP + * onenand_otp_write_oob_nolock - [INTERN] OneNAND write out-of-band, specific to OTP * @param mtd MTD device structure * @param to offset to write to * @param len number of bytes to write diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index ed3d6cd..a8befde 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -138,7 +138,7 @@ static int sm_get_lba(uint8_t *lba) if ((lba[0] & 0xF8) != 0x10) return -2; - /* check parity - endianess doesn't matter */ + /* check parity - endianness doesn't matter */ if (hweight16(*(uint16_t *)lba) & 1) return -2; diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 67774f9..62d56f9 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -172,7 +172,7 @@ struct mtd_info { const char *name; int index; - /* ecc layout structure pointer - read only ! */ + /* ECC layout structure pointer - read only! */ struct nand_ecclayout *ecclayout; /* Data for variable erase regions. If numeraseregions is zero, diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 0f239e7..877fbbd 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -42,10 +42,10 @@ extern void nand_release(struct mtd_info *mtd); /* Internal helper for board drivers which need to override command function */ extern void nand_wait_ready(struct mtd_info *mtd); -/* locks all blockes present in the device */ +/* locks all blocks present in the device */ extern int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len); -/* unlocks specified locked blockes */ +/* unlocks specified locked blocks */ extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); /* The maximum number of NAND chips in an array */ @@ -150,7 +150,7 @@ typedef enum { #define NAND_ECC_READ 0 /* Reset Hardware ECC for write */ #define NAND_ECC_WRITE 1 -/* Enable Hardware ECC before syndrom is read back from flash */ +/* Enable Hardware ECC before syndrome is read back from flash */ #define NAND_ECC_READSYN 2 /* Bit mask for flags passed to do_nand_read_ecc */ @@ -163,7 +163,7 @@ typedef enum { */ /* Chip can not auto increment pages */ #define NAND_NO_AUTOINCR 0x00000001 -/* Buswitdh is 16 bit */ +/* Buswidth is 16 bit */ #define NAND_BUSWIDTH_16 0x00000002 /* Device supports partial programming without padding */ #define NAND_NO_PADDING 0x00000004 @@ -319,26 +319,26 @@ struct nand_hw_control { }; /** - * struct nand_ecc_ctrl - Control structure for ecc - * @mode: ecc mode - * @steps: number of ecc steps per page - * @size: data bytes per ecc step - * @bytes: ecc bytes per step - * @total: total number of ecc bytes per page - * @prepad: padding information for syndrome based ecc generators - * @postpad: padding information for syndrome based ecc generators + * struct nand_ecc_ctrl - Control structure for ECC + * @mode: ECC mode + * @steps: number of ECC steps per page + * @size: data bytes per ECC step + * @bytes: ECC bytes per step + * @total: total number of ECC bytes per page + * @prepad: padding information for syndrome based ECC generators + * @postpad: padding information for syndrome based ECC generators * @layout: ECC layout control struct pointer - * @priv: pointer to private ecc control data - * @hwctl: function to control hardware ecc generator. Must only + * @priv: pointer to private ECC control data + * @hwctl: function to control hardware ECC generator. Must only * be provided if an hardware ECC is available - * @calculate: function for ecc calculation or readback from ecc hardware - * @correct: function for ecc correction, matching to ecc generator (sw/hw) + * @calculate: function for ECC calculation or readback from ECC hardware + * @correct: function for ECC correction, matching to ECC generator (sw/hw) * @read_page_raw: function to read a raw page without ECC * @write_page_raw: function to write a raw page without ECC - * @read_page: function to read a page according to the ecc generator + * @read_page: function to read a page according to the ECC generator * requirements. * @read_subpage: function to read parts of the page covered by ECC. - * @write_page: function to write a page according to the ecc generator + * @write_page: function to write a page according to the ECC generator * requirements. * @read_oob: function to read chip OOB data * @write_oob: function to write chip OOB data @@ -376,8 +376,8 @@ struct nand_ecc_ctrl { /** * struct nand_buffers - buffer structure for read/write - * @ecccalc: buffer for calculated ecc - * @ecccode: buffer for ecc read from flash + * @ecccalc: buffer for calculated ECC + * @ecccode: buffer for ECC read from flash * @databuf: buffer for data - dynamically sized * * Do not change the order of buffers. databuf and oobrbuf must be in @@ -410,7 +410,7 @@ struct nand_buffers { * mtd->oobsize, mtd->writesize and so on. * @id_data contains the 8 bytes values of NAND_CMD_READID. * Return with the bus width. - * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accesing + * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accessing * device ready/busy line. If set to NULL no access to * ready/busy is available and the ready/busy information * is read from the chip status register. @@ -418,7 +418,7 @@ struct nand_buffers { * commands to the chip. * @waitfunc: [REPLACEABLE] hardwarespecific function for wait on * ready. - * @ecc: [BOARDSPECIFIC] ecc control ctructure + * @ecc: [BOARDSPECIFIC] ECC control structure * @buffers: buffer structure for read/write * @hwcontrol: platform-specific hardware control structure * @ops: oob operation operands @@ -455,7 +455,7 @@ struct nand_buffers { * non 0 if ONFI supported. * @onfi_params: [INTERN] holds the ONFI page parameter when ONFI is * supported, 0 otherwise. - * @ecclayout: [REPLACEABLE] the default ecc placement scheme + * @ecclayout: [REPLACEABLE] the default ECC placement scheme * @bbt: [INTERN] bad block table pointer * @bbt_td: [REPLACEABLE] bad block table descriptor for flash * lookup. @@ -463,7 +463,7 @@ struct nand_buffers { * @badblock_pattern: [REPLACEABLE] bad block scan pattern used for initial * bad block scan. * @controller: [REPLACEABLE] a pointer to a hardware controller - * structure which is shared among multiple independend + * structure which is shared among multiple independent * devices. * @priv: [OPTIONAL] pointer to private chip date * @errstat: [OPTIONAL] hardware specific function to perform @@ -604,7 +604,7 @@ extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len, * @chip_delay: R/B delay value in us * @options: Option flags, e.g. 16bit buswidth * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH - * @ecclayout: ecc layout info structure + * @ecclayout: ECC layout info structure * @part_probe_types: NULL-terminated array of probe types * @set_parts: platform specific function to set partitions * @priv: hardware controller specific settings -- cgit v0.10.2 From d6137badeff1ef64b4e0092ec249ebdeaeb3ff37 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 27 Jun 2011 01:02:59 +0400 Subject: mtd: make ofpart buildable as a separate module As ofpart now uses a standard mtd partitions parser interface, make it buildable as a separate module. Also provide MODULE_DESCRIPTION and MODULE_AUTHOR for this module. Signed-off-by: Dmitry Eremin-Solenikov Acked-by: Randy Dunlap Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 4be8373..cc02e21 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -137,7 +137,8 @@ config MTD_AFS_PARTS 'physmap' map driver (CONFIG_MTD_PHYSMAP) does this, for example. config MTD_OF_PARTS - def_bool y + tristate "OpenFirmware partitioning information support" + default Y depends on OF help This provides a partition parsing function which derives diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile index 39664c4..9aaac3a 100644 --- a/drivers/mtd/Makefile +++ b/drivers/mtd/Makefile @@ -5,8 +5,8 @@ # Core functionality. obj-$(CONFIG_MTD) += mtd.o mtd-y := mtdcore.o mtdsuper.o mtdconcat.o mtdpart.o -mtd-$(CONFIG_MTD_OF_PARTS) += ofpart.o +obj-$(CONFIG_MTD_OF_PARTS) += ofpart.o obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o obj-$(CONFIG_MTD_AFS_PARTS) += afs.o diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c index 41c4518..aa33b8a 100644 --- a/drivers/mtd/ofpart.c +++ b/drivers/mtd/ofpart.c @@ -174,3 +174,5 @@ out: module_init(ofpart_parser_init); MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Parser for MTD partitioning information in device tree"); +MODULE_AUTHOR("Vitaly Wool, David Gibson"); -- cgit v0.10.2 From 041e4575f03400e045f00a823fcbbbb337de8409 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Thu, 23 Jun 2011 16:45:24 -0700 Subject: mtd: nand: handle ECC errors in OOB While the standard NAND OOB functions do not do ECC on the spare area, it is possible for a driver to supply its own OOB ECC functions (e.g., HW ECC). nand_do_read_oob should act like nand_do_read_ops in checking the ECC stats and returning -EBADMSG or -EUCLEAN on uncorrectable errors or correctable bitflips, respectively. These error codes could be used in flash-based BBT code or in YAFFS, for example. Doing this, however, messes with the behavior of mtd_do_readoob. Now, mtd_do_readoob should check whether we had -EUCLEAN or -EBADMSG errors and discard those as "non-fatal" so that the ioctls can still succeed with (possibly uncorrected) data. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index c60067b..d592463 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -473,6 +473,21 @@ static int mtd_do_readoob(struct mtd_info *mtd, uint64_t start, ret = -EFAULT; kfree(ops.oobbuf); + + /* + * NAND returns -EBADMSG on ECC errors, but it returns the OOB + * data. For our userspace tools it is important to dump areas + * with ECC errors! + * For kernel internal usage it also might return -EUCLEAN + * to signal the caller that a bitflip has occured and has + * been corrected by the ECC algorithm. + * + * Note: most NAND ECC algorithms do not calculate ECC + * for the OOB area. + */ + if (ret == -EUCLEAN || ret == -EBADMSG) + return 0; + return ret; } diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 237d7da..5418d27 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1750,6 +1750,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, { int page, realpage, chipnr, sndcmd = 1; struct nand_chip *chip = mtd->priv; + struct mtd_ecc_stats stats; int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1; int readlen = ops->ooblen; int len; @@ -1758,6 +1759,8 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08Lx, len = %i\n", __func__, (unsigned long long)from, readlen); + stats = mtd->ecc_stats; + if (ops->mode == MTD_OOB_AUTO) len = chip->ecc.layout->oobavail; else @@ -1828,7 +1831,11 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, } ops->oobretlen = ops->ooblen; - return 0; + + if (mtd->ecc_stats.failed - stats.failed) + return -EBADMSG; + + return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0; } /** -- cgit v0.10.2 From 9786f6e68af00d0988ad7f51fe3fd118be1c30ad Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Mon, 27 Jun 2011 16:34:46 +0400 Subject: mtd: ofpart: add ofoldpart alias ofpart.ko also provides ofoldpart MTD parser. Add respective MODULE_ALIAS("ofoldpart"); declaration. Artem: improve the comment Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c index aa33b8a..64be8f0 100644 --- a/drivers/mtd/ofpart.c +++ b/drivers/mtd/ofpart.c @@ -176,3 +176,9 @@ module_init(ofpart_parser_init); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Parser for MTD partitioning information in device tree"); MODULE_AUTHOR("Vitaly Wool, David Gibson"); +/* + * When MTD core cannot find the requested parser, it tries to load the module + * with the same name. Since we provide the ofoldpart parser, we should have + * the corresponding alias. + */ +MODULE_ALIAS("ofoldpart"); -- cgit v0.10.2 From 51b11e3630672b7ce8793ecf13e5759656edf38a Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Tue, 28 Jun 2011 00:21:30 +0400 Subject: jffs2: use mutex_is_locked() in __jffs2_flush_wbuf() Use a helper to test if a mutex is held instead of a hack with mutex_trylock(). Signed-off-by: Alexey Khoroshilov Signed-off-by: Artem Bityutskiy diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c index 4515bea..a10fb24 100644 --- a/fs/jffs2/wbuf.c +++ b/fs/jffs2/wbuf.c @@ -578,8 +578,7 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad) if (!jffs2_is_writebuffered(c)) return 0; - if (mutex_trylock(&c->alloc_sem)) { - mutex_unlock(&c->alloc_sem); + if (!mutex_is_locked(&c->alloc_sem)) { printk(KERN_CRIT "jffs2_flush_wbuf() called with alloc_sem not locked!\n"); BUG(); } -- cgit v0.10.2 From 903cd06cd6ece7f9050a3ad5b03e0b76be2882ff Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 28 Jun 2011 16:28:58 -0700 Subject: mtd: nand: ignore ECC errors for simple BBM scans Now that nand_do_readoob() may return -EUCLEAN or -EBADMSG on ECC errors, we need to handle the return value specially in some cases. When scanning for simple bad block markers, reacting to an ECC error is not very useful, as we assume that the relevant markers are still non-0xFF for true bad blocks. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index f30807c..a4fcbf1 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -312,14 +312,20 @@ static int scan_read_raw_oob(struct mtd_info *mtd, uint8_t *buf, loff_t offs, ops.oobbuf = buf + len; ops.datbuf = buf; ops.len = len; - return mtd->read_oob(mtd, offs, &ops); + res = mtd->read_oob(mtd, offs, &ops); + + /* Ignore ECC errors when checking for BBM */ + if (res != -EUCLEAN && res != -EBADMSG) + return res; + return 0; } else { ops.oobbuf = buf + mtd->writesize; ops.datbuf = buf; ops.len = mtd->writesize; res = mtd->read_oob(mtd, offs, &ops); - if (res) + /* Ignore ECC errors when checking for BBM */ + if (res && res != -EUCLEAN && res != -EBADMSG) return res; } @@ -435,7 +441,8 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd, * byte reads for 16 bit buswidth. */ ret = mtd->read_oob(mtd, offs, &ops); - if (ret) + /* Ignore ECC errors when checking for BBM */ + if (ret && ret != -EUCLEAN && ret != -EBADMSG) return ret; if (check_short_pattern(buf, bd)) -- cgit v0.10.2 From 003bc47922047e21ebfb19cb99317273b313f79d Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 28 Jun 2011 16:28:59 -0700 Subject: mtd: tests: ignore corrected bitflips in OOB on mtd_readtest read_oob may now return ECC error codes. If the code is -EUCLEAN, then we can safely ignore the error as a corrected bitflip. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c index afe71aa..836792d 100644 --- a/drivers/mtd/tests/mtd_readtest.c +++ b/drivers/mtd/tests/mtd_readtest.c @@ -75,7 +75,8 @@ static int read_eraseblock_by_page(int ebnum) ops.datbuf = NULL; ops.oobbuf = oobbuf; ret = mtd->read_oob(mtd, addr, &ops); - if (ret || ops.oobretlen != mtd->oobsize) { + if ((ret && ret != -EUCLEAN) || + ops.oobretlen != mtd->oobsize) { printk(PRINT_PREF "error: read oob failed at " "%#llx\n", (long long)addr); if (!err) -- cgit v0.10.2 From c478d7e449508d924628b012e62dee6dddb6b9e9 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 28 Jun 2011 16:29:00 -0700 Subject: mtd: edit NAND-related comment This comment was unclear regarding which NAND functions do and do not support ECC on the spare area. This update should reflect the current status of the NAND system but can be updated if changes are made in the standard functions. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index d592463..e197192 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -482,8 +482,9 @@ static int mtd_do_readoob(struct mtd_info *mtd, uint64_t start, * to signal the caller that a bitflip has occured and has * been corrected by the ECC algorithm. * - * Note: most NAND ECC algorithms do not calculate ECC - * for the OOB area. + * Note: currently the standard NAND function, nand_read_oob_std, + * does not calculate ECC for the OOB area, so do not rely on + * this behavior unless you have replaced it with your own. */ if (ret == -EUCLEAN || ret == -EBADMSG) return 0; -- cgit v0.10.2 From 08c248fbe2bfc0326255c5b0cb3952166234d59b Mon Sep 17 00:00:00 2001 From: Matthieu CASTET Date: Sun, 26 Jun 2011 18:26:55 +0200 Subject: mtd: nand_flash_detect_onfi propagate busw info there is a bug in nand_flash_detect_onfi, busw need to be passed by pointer to return it. Signed-off-by: Matthieu CASTET Acked-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 5418d27..250e86f 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2824,7 +2824,7 @@ static u16 onfi_crc16(u16 crc, u8 const *p, size_t len) * Check if the NAND chip is ONFI compliant, returns 1 if it is, 0 otherwise. */ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, - int busw) + int *busw) { struct nand_onfi_params *p = &chip->onfi_params; int i; @@ -2879,9 +2879,9 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; - busw = 0; + *busw = 0; if (le16_to_cpu(p->features) & 1) - busw = NAND_BUSWIDTH_16; + *busw = NAND_BUSWIDTH_16; chip->options &= ~NAND_CHIPOPTIONS_MSK; chip->options |= (NAND_NO_READRDY | @@ -2948,7 +2948,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, chip->onfi_version = 0; if (!type->name || !type->pagesize) { /* Check is chip is ONFI compliant */ - ret = nand_flash_detect_onfi(mtd, chip, busw); + ret = nand_flash_detect_onfi(mtd, chip, &busw); if (ret) goto ident_done; } -- cgit v0.10.2 From 201ab536ac205a2787f8eac2eedc697616f99e04 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Wed, 29 Jun 2011 18:41:16 +0200 Subject: mtd: atmel_nand: fix wrong use of 0 as NULL Fixing this error: atmel_nand.c:718:20: warning: Using plain integer as NULL pointer Signed-off-by: Nicolas Ferre Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index b138143..ee6e26e 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -588,7 +588,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) dma_cap_zero(mask); dma_cap_set(DMA_MEMCPY, mask); - host->dma_chan = dma_request_channel(mask, 0, NULL); + host->dma_chan = dma_request_channel(mask, NULL, NULL); if (!host->dma_chan) { dev_err(host->dev, "Failed to request DMA channel\n"); use_dma = 0; -- cgit v0.10.2 From a751d3155dee38cb2a8e46d8cf3fa6998b2f3239 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 30 Jun 2011 19:53:09 +0800 Subject: mtd: fsl_upm: fix a memory leak in fun_chip_init error path Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index da92fed..b4f3cc9 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -196,6 +196,8 @@ static int __devinit fun_chip_init(struct fsl_upm_nand *fun, ret = mtd_device_parse_register(&fun->mtd, NULL, &ppdata, NULL, 0); err: of_node_put(flash_np); + if (ret) + kfree(fun->mtd.name); return ret; } -- cgit v0.10.2 From b4ca74738ab6c9ed8190b06cd7bf785dc98c640e Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Fri, 1 Jul 2011 13:51:15 +0200 Subject: mtd: plat-nand: Fixup kerneldoc for struct platform_nand_chip The set_parts and priv members of struct platform_nand_chip where removed in commit c36a6ef3845262ade529afb9f458738b1f196f83 but the kerneldoc wasn't updated. Signed-off-by: Tobias Klauser Signed-off-by: Artem Bityutskiy diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 877fbbd..6d56968 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -606,8 +606,6 @@ extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len, * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH * @ecclayout: ECC layout info structure * @part_probe_types: NULL-terminated array of probe types - * @set_parts: platform specific function to set partitions - * @priv: hardware controller specific settings */ struct platform_nand_chip { int nr_chips; -- cgit v0.10.2 From 57b078a09bf0ab3f0babcfe6ecb2ac226d9178be Mon Sep 17 00:00:00 2001 From: Liu Shuo Date: Tue, 28 Jun 2011 09:50:51 +0800 Subject: mtd: nand: don't free the global data too early The global data fsl_lbc_ctrl_dev->nand don't have to be freed in fsl_elbc_chip_remove(). The right place to do that is in fsl_elbc_nand_remove() if elbc_fcm_ctrl->counter is zero. Signed-off-by: Liu Shuo Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 915b4a4..3c2f03c 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -829,7 +829,6 @@ static int fsl_elbc_chip_remove(struct fsl_elbc_mtd *priv) elbc_fcm_ctrl->chips[priv->bank] = NULL; kfree(priv); - kfree(elbc_fcm_ctrl); return 0; } -- cgit v0.10.2 From fb5427508abbd635e877fabdf55795488119c2d6 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Mon, 4 Jul 2011 16:17:53 +0200 Subject: mtd: atmel_nand: optimize read/write buffer functions For PIO NAND access functions, we use the features of the SMC: - no need to take into account the NAND bus width: SMC will deal with this - use of an IO memcpy on the NAND chip-select space is able to generate proper SMC behavior. Signed-off-by: Nicolas Ferre Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index ee6e26e..23e5d77 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -161,37 +161,6 @@ static int atmel_nand_device_ready(struct mtd_info *mtd) !!host->board->rdy_pin_active_low; } -/* - * Minimal-overhead PIO for data access. - */ -static void atmel_read_buf8(struct mtd_info *mtd, u8 *buf, int len) -{ - struct nand_chip *nand_chip = mtd->priv; - - __raw_readsb(nand_chip->IO_ADDR_R, buf, len); -} - -static void atmel_read_buf16(struct mtd_info *mtd, u8 *buf, int len) -{ - struct nand_chip *nand_chip = mtd->priv; - - __raw_readsw(nand_chip->IO_ADDR_R, buf, len / 2); -} - -static void atmel_write_buf8(struct mtd_info *mtd, const u8 *buf, int len) -{ - struct nand_chip *nand_chip = mtd->priv; - - __raw_writesb(nand_chip->IO_ADDR_W, buf, len); -} - -static void atmel_write_buf16(struct mtd_info *mtd, const u8 *buf, int len) -{ - struct nand_chip *nand_chip = mtd->priv; - - __raw_writesw(nand_chip->IO_ADDR_W, buf, len / 2); -} - static void dma_complete_func(void *completion) { complete(completion); @@ -266,33 +235,27 @@ err_buf: static void atmel_read_buf(struct mtd_info *mtd, u8 *buf, int len) { struct nand_chip *chip = mtd->priv; - struct atmel_nand_host *host = chip->priv; if (use_dma && len > mtd->oobsize) /* only use DMA for bigger than oob size: better performances */ if (atmel_nand_dma_op(mtd, buf, len, 1) == 0) return; - if (host->board->bus_width_16) - atmel_read_buf16(mtd, buf, len); - else - atmel_read_buf8(mtd, buf, len); + /* if no DMA operation possible, use PIO */ + memcpy_fromio(buf, chip->IO_ADDR_R, len); } static void atmel_write_buf(struct mtd_info *mtd, const u8 *buf, int len) { struct nand_chip *chip = mtd->priv; - struct atmel_nand_host *host = chip->priv; if (use_dma && len > mtd->oobsize) /* only use DMA for bigger than oob size: better performances */ if (atmel_nand_dma_op(mtd, (void *)buf, len, 0) == 0) return; - if (host->board->bus_width_16) - atmel_write_buf16(mtd, buf, len); - else - atmel_write_buf8(mtd, buf, len); + /* if no DMA operation possible, use PIO */ + memcpy_toio(chip->IO_ADDR_W, buf, len); } /* -- cgit v0.10.2 From 52a474de0a830bdf4305ef19c3321064ce5da438 Mon Sep 17 00:00:00 2001 From: Mike Hench Date: Tue, 5 Jul 2011 19:14:48 -0400 Subject: mtd: eLBC NAND: remove elbc_fcm_ctrl->oob_poi The eLBC NAND driver currently follows up each program/write operation with a read-back of the page, in order to [ostensibly] fill in ECC data for the caller. However, the page address used for this read is always -1, so the read will never work correctly. Remove this useless (and potentially problematic) block of code. Signed-off-by: Matthew L. Creech Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 3c2f03c..acc27ee 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -75,7 +75,6 @@ struct fsl_elbc_fcm_ctrl { unsigned int use_mdr; /* Non zero if the MDR is to be set */ unsigned int oob; /* Non zero if operating on OOB data */ unsigned int counter; /* counter for the initializations */ - char *oob_poi; /* Place to write ECC after read back */ }; /* These map to the positions used by the FCM hardware ECC generator */ @@ -435,7 +434,6 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* PAGEPROG reuses all of the setup from SEQIN and adds the length */ case NAND_CMD_PAGEPROG: { - int full_page; dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_PAGEPROG " "writing %d bytes.\n", elbc_fcm_ctrl->index); @@ -445,34 +443,12 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, * write so the HW generates the ECC. */ if (elbc_fcm_ctrl->oob || elbc_fcm_ctrl->column != 0 || - elbc_fcm_ctrl->index != mtd->writesize + mtd->oobsize) { + elbc_fcm_ctrl->index != mtd->writesize + mtd->oobsize) out_be32(&lbc->fbcr, elbc_fcm_ctrl->index); - full_page = 0; - } else { + else out_be32(&lbc->fbcr, 0); - full_page = 1; - } fsl_elbc_run_command(mtd); - - /* Read back the page in order to fill in the ECC for the - * caller. Is this really needed? - */ - if (full_page && elbc_fcm_ctrl->oob_poi) { - out_be32(&lbc->fbcr, 3); - set_addr(mtd, 6, page_addr, 1); - - elbc_fcm_ctrl->read_bytes = mtd->writesize + 9; - - fsl_elbc_do_read(chip, 1); - fsl_elbc_run_command(mtd); - - memcpy_fromio(elbc_fcm_ctrl->oob_poi + 6, - &elbc_fcm_ctrl->addr[elbc_fcm_ctrl->index], 3); - elbc_fcm_ctrl->index += 3; - } - - elbc_fcm_ctrl->oob_poi = NULL; return; } @@ -752,13 +728,8 @@ static void fsl_elbc_write_page(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf) { - struct fsl_elbc_mtd *priv = chip->priv; - struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = priv->ctrl->nand; - fsl_elbc_write_buf(mtd, buf, mtd->writesize); fsl_elbc_write_buf(mtd, chip->oob_poi, mtd->oobsize); - - elbc_fcm_ctrl->oob_poi = chip->oob_poi; } static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv) -- cgit v0.10.2 From 051fc41c2e578e10950bf34dc84878e489e0679f Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Thu, 14 Jul 2011 20:44:30 -0700 Subject: mtd: pxa3xx_nand: enhance suspend and resume routine This patch add protection on the suspend&resume path to prevent some unexpected behavior, like interrupt occur at the very second of resume back and it don't follow normal command path, which lead to bug. Signed-off-by: Lei Wen diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index b7db1b2..61e1ff5 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -1158,23 +1158,36 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) static int pxa3xx_nand_suspend(struct platform_device *pdev, pm_message_t state) { struct pxa3xx_nand_info *info = platform_get_drvdata(pdev); + struct mtd_info *mtd = info->mtd; if (info->state) { dev_err(&pdev->dev, "driver busy, state = %d\n", info->state); return -EAGAIN; } + mtd->suspend(mtd); return 0; } static int pxa3xx_nand_resume(struct platform_device *pdev) { struct pxa3xx_nand_info *info = platform_get_drvdata(pdev); + struct mtd_info *mtd = info->mtd; + + /* We don't want to handle interrupt without calling mtd routine */ + disable_int(info, NDCR_INT_MASK); nand_writel(info, NDTR0CS0, info->ndtr0cs0); nand_writel(info, NDTR1CS0, info->ndtr1cs0); - clk_enable(info->clk); + /* + * As the spec says, the NDSR would be updated to 0x1800 when + * doing the nand_clk disable/enable. + * To prevent it damaging state machine of the driver, clear + * all status before resume + */ + nand_writel(info, NDSR, NDSR_MASK); + mtd->resume(mtd); return 0; } #else -- cgit v0.10.2 From da675b4ef20bb460f185e0aca4afeb8c3e7e4477 Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Thu, 14 Jul 2011 20:44:31 -0700 Subject: mtd: pxa3xx_nand: convert all printk into dev_* Also add missed warning message. Signed-off-by: Lei Wen Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 61e1ff5..e55d7f8 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -359,7 +359,7 @@ static void handle_data_pio(struct pxa3xx_nand_info *info) DIV_ROUND_UP(info->oob_size, 4)); break; default: - printk(KERN_ERR "%s: invalid state %d\n", __func__, + dev_err(&info->pdev->dev, "%s: invalid state %d\n", __func__, info->state); BUG(); } @@ -385,7 +385,7 @@ static void start_data_dma(struct pxa3xx_nand_info *info) desc->dcmd |= DCMD_INCTRGADDR | DCMD_FLOWSRC; break; default: - printk(KERN_ERR "%s: invalid state %d\n", __func__, + dev_err(&info->pdev->dev, "%s: invalid state %d\n", __func__, info->state); BUG(); } @@ -616,8 +616,8 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, default: exec_cmd = 0; - printk(KERN_ERR "pxa3xx-nand: non-supported" - " command %x\n", command); + dev_err(&info->pdev->dev, "non-supported command %x\n", + command); break; } @@ -646,7 +646,7 @@ static void pxa3xx_nand_cmdfunc(struct mtd_info *mtd, unsigned command, ret = wait_for_completion_timeout(&info->cmd_complete, CHIP_DELAY_TIMEOUT); if (!ret) { - printk(KERN_ERR "Wait time out!!!\n"); + dev_err(&info->pdev->dev, "Wait time out!!!\n"); /* Stop State Machine for next command cycle */ pxa3xx_nand_stop(info); } @@ -774,11 +774,15 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info, struct pxa3xx_nand_platform_data *pdata = pdev->dev.platform_data; uint32_t ndcr = 0x0; /* enable all interrupts */ - if (f->page_size != 2048 && f->page_size != 512) + if (f->page_size != 2048 && f->page_size != 512) { + dev_err(&pdev->dev, "Current only support 2048 and 512 size\n"); return -EINVAL; + } - if (f->flash_width != 16 && f->flash_width != 8) + if (f->flash_width != 16 && f->flash_width != 8) { + dev_err(&pdev->dev, "Only support 8bit and 16 bit!\n"); return -EINVAL; + } /* calculate flash information */ info->cmdset = &default_cmdset; @@ -898,7 +902,7 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) if (!ret) { kfree(mtd); info->mtd = NULL; - printk(KERN_INFO "There is no nand chip on cs 0!\n"); + dev_info(&info->pdev->dev, "There is no nand chip on cs 0!\n"); return -EINVAL; } @@ -906,11 +910,12 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) chip->cmdfunc(mtd, NAND_CMD_READID, 0, 0); id = *((uint16_t *)(info->data_buff)); if (id != 0) - printk(KERN_INFO "Detect a flash id %x\n", id); + dev_info(&info->pdev->dev, "Detect a flash id %x\n", id); else { kfree(mtd); info->mtd = NULL; - printk(KERN_WARNING "Read out ID 0, potential timing set wrong!!\n"); + dev_warn(&info->pdev->dev, + "Read out ID 0, potential timing set wrong!!\n"); return -EINVAL; } @@ -930,7 +935,7 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) if (i >= (ARRAY_SIZE(builtin_flash_types) + pdata->num_flash - 1)) { kfree(mtd); info->mtd = NULL; - printk(KERN_ERR "ERROR!! flash not defined!!!\n"); + dev_err(&info->pdev->dev, "ERROR!! flash not defined!!!\n"); return -EINVAL; } -- cgit v0.10.2 From d456882b41b84eba5e729cf78757b8ed95572362 Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Thu, 14 Jul 2011 20:44:32 -0700 Subject: mtd: pxa3xx_nand: sperate each chip individual info For support two chip select, we seperate chip specific info in this patch. Signed-off-by: Lei Wen diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index e55d7f8..97b6894 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -110,6 +110,7 @@ enum { enum { STATE_IDLE = 0, + STATE_PREPARED, STATE_CMD_HANDLE, STATE_DMA_READING, STATE_DMA_WRITING, @@ -120,21 +121,39 @@ enum { STATE_READY, }; -struct pxa3xx_nand_info { - struct nand_chip nand_chip; +struct pxa3xx_nand_host { + struct nand_chip chip; + struct pxa3xx_nand_cmdset *cmdset; + struct mtd_info *mtd; + void *info_data; + + /* page size of attached chip */ + unsigned int page_size; + int use_ecc; + /* calculated from pxa3xx_nand_flash data */ + unsigned int col_addr_cycles; + unsigned int row_addr_cycles; + size_t read_id_bytes; + + /* cached register value */ + uint32_t reg_ndcr; + uint32_t ndtr0cs0; + uint32_t ndtr1cs0; +}; + +struct pxa3xx_nand_info { struct nand_hw_control controller; struct platform_device *pdev; - struct pxa3xx_nand_cmdset *cmdset; struct clk *clk; void __iomem *mmio_base; unsigned long mmio_phys; + struct completion cmd_complete; unsigned int buf_start; unsigned int buf_count; - struct mtd_info *mtd; /* DMA information */ int drcmr_dat; int drcmr_cmd; @@ -142,18 +161,11 @@ struct pxa3xx_nand_info { unsigned char *data_buff; unsigned char *oob_buff; dma_addr_t data_buff_phys; - size_t data_buff_size; int data_dma_ch; struct pxa_dma_desc *data_desc; dma_addr_t data_desc_addr; - uint32_t reg_ndcr; - - /* saved column/page_addr during CMD_SEQIN */ - int seqin_column; - int seqin_page_addr; - - /* relate to the command */ + struct pxa3xx_nand_host *host; unsigned int state; int use_ecc; /* use HW ECC ? */ @@ -162,24 +174,13 @@ struct pxa3xx_nand_info { unsigned int page_size; /* page size of attached chip */ unsigned int data_size; /* data size in FIFO */ + unsigned int oob_size; int retcode; - struct completion cmd_complete; /* generated NDCBx register values */ uint32_t ndcb0; uint32_t ndcb1; uint32_t ndcb2; - - /* timing calcuted from setting */ - uint32_t ndtr0cs0; - uint32_t ndtr1cs0; - - /* calculated from pxa3xx_nand_flash data */ - size_t oob_size; - size_t read_id_bytes; - - unsigned int col_addr_cycles; - unsigned int row_addr_cycles; }; static int use_dma = 1; @@ -241,9 +242,10 @@ const char *mtd_names[] = {"pxa3xx_nand-0", NULL}; /* convert nano-seconds to nand flash controller clock cycles */ #define ns2cycle(ns, clk) (int)((ns) * (clk / 1000000) / 1000) -static void pxa3xx_nand_set_timing(struct pxa3xx_nand_info *info, +static void pxa3xx_nand_set_timing(struct pxa3xx_nand_host *host, const struct pxa3xx_nand_timing *t) { + struct pxa3xx_nand_info *info = host->info_data; unsigned long nand_clk = clk_get_rate(info->clk); uint32_t ndtr0, ndtr1; @@ -258,23 +260,24 @@ static void pxa3xx_nand_set_timing(struct pxa3xx_nand_info *info, NDTR1_tWHR(ns2cycle(t->tWHR, nand_clk)) | NDTR1_tAR(ns2cycle(t->tAR, nand_clk)); - info->ndtr0cs0 = ndtr0; - info->ndtr1cs0 = ndtr1; + host->ndtr0cs0 = ndtr0; + host->ndtr1cs0 = ndtr1; nand_writel(info, NDTR0CS0, ndtr0); nand_writel(info, NDTR1CS0, ndtr1); } static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info) { - int oob_enable = info->reg_ndcr & NDCR_SPARE_EN; + struct pxa3xx_nand_host *host = info->host; + int oob_enable = host->reg_ndcr & NDCR_SPARE_EN; - info->data_size = info->page_size; + info->data_size = host->page_size; if (!oob_enable) { info->oob_size = 0; return; } - switch (info->page_size) { + switch (host->page_size) { case 2048: info->oob_size = (info->use_ecc) ? 40 : 64; break; @@ -292,9 +295,10 @@ static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info) */ static void pxa3xx_nand_start(struct pxa3xx_nand_info *info) { + struct pxa3xx_nand_host *host = info->host; uint32_t ndcr; - ndcr = info->reg_ndcr; + ndcr = host->reg_ndcr; ndcr |= info->use_ecc ? NDCR_ECC_EN : 0; ndcr |= info->use_dma ? NDCR_DMA_EN : 0; ndcr |= NDCR_ND_RUN; @@ -463,12 +467,6 @@ NORMAL_IRQ_EXIT: return IRQ_HANDLED; } -static int pxa3xx_nand_dev_ready(struct mtd_info *mtd) -{ - struct pxa3xx_nand_info *info = mtd->priv; - return (nand_readl(info, NDSR) & NDSR_RDY) ? 1 : 0; -} - static inline int is_buf_blank(uint8_t *buf, size_t len) { for (; len > 0; len--) @@ -481,10 +479,10 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, uint16_t column, int page_addr) { uint16_t cmd; - int addr_cycle, exec_cmd, ndcb0; - struct mtd_info *mtd = info->mtd; + int addr_cycle, exec_cmd; + struct pxa3xx_nand_host *host = info->host; + struct mtd_info *mtd = host->mtd; - ndcb0 = 0; addr_cycle = 0; exec_cmd = 1; @@ -494,6 +492,7 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, info->oob_size = 0; info->use_ecc = 0; info->is_ready = 0; + info->ndcb0 = 0; info->retcode = ERR_NONE; switch (command) { @@ -512,20 +511,19 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, break; } - info->ndcb0 = ndcb0; - addr_cycle = NDCB0_ADDR_CYC(info->row_addr_cycles - + info->col_addr_cycles); + addr_cycle = NDCB0_ADDR_CYC(host->row_addr_cycles + + host->col_addr_cycles); switch (command) { case NAND_CMD_READOOB: case NAND_CMD_READ0: - cmd = info->cmdset->read1; + cmd = host->cmdset->read1; if (command == NAND_CMD_READOOB) info->buf_start = mtd->writesize + column; else info->buf_start = column; - if (unlikely(info->page_size < PAGE_CHUNK_SIZE)) + if (unlikely(host->page_size < PAGE_CHUNK_SIZE)) info->ndcb0 |= NDCB0_CMD_TYPE(0) | addr_cycle | (cmd & NDCB0_CMD1_MASK); @@ -537,7 +535,7 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, case NAND_CMD_SEQIN: /* small page addr setting */ - if (unlikely(info->page_size < PAGE_CHUNK_SIZE)) { + if (unlikely(host->page_size < PAGE_CHUNK_SIZE)) { info->ndcb1 = ((page_addr & 0xFFFFFF) << 8) | (column & 0xFF); @@ -564,7 +562,7 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, break; } - cmd = info->cmdset->program; + cmd = host->cmdset->program; info->ndcb0 |= NDCB0_CMD_TYPE(0x1) | NDCB0_AUTO_RS | NDCB0_ST_ROW_EN @@ -574,8 +572,8 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, break; case NAND_CMD_READID: - cmd = info->cmdset->read_id; - info->buf_count = info->read_id_bytes; + cmd = host->cmdset->read_id; + info->buf_count = host->read_id_bytes; info->ndcb0 |= NDCB0_CMD_TYPE(3) | NDCB0_ADDR_CYC(1) | cmd; @@ -583,7 +581,7 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, info->data_size = 8; break; case NAND_CMD_STATUS: - cmd = info->cmdset->read_status; + cmd = host->cmdset->read_status; info->buf_count = 1; info->ndcb0 |= NDCB0_CMD_TYPE(4) | NDCB0_ADDR_CYC(1) @@ -593,7 +591,7 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, break; case NAND_CMD_ERASE1: - cmd = info->cmdset->erase; + cmd = host->cmdset->erase; info->ndcb0 |= NDCB0_CMD_TYPE(2) | NDCB0_AUTO_RS | NDCB0_ADDR_CYC(3) @@ -604,7 +602,7 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, break; case NAND_CMD_RESET: - cmd = info->cmdset->reset; + cmd = host->cmdset->reset; info->ndcb0 |= NDCB0_CMD_TYPE(5) | cmd; @@ -627,7 +625,8 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, static void pxa3xx_nand_cmdfunc(struct mtd_info *mtd, unsigned command, int column, int page_addr) { - struct pxa3xx_nand_info *info = mtd->priv; + struct pxa3xx_nand_host *host = mtd->priv; + struct pxa3xx_nand_info *info = host->info_data; int ret, exec_cmd; /* @@ -635,9 +634,10 @@ static void pxa3xx_nand_cmdfunc(struct mtd_info *mtd, unsigned command, * "byte" address into a "word" address appropriate * for indexing a word-oriented device */ - if (info->reg_ndcr & NDCR_DWIDTH_M) + if (host->reg_ndcr & NDCR_DWIDTH_M) column /= 2; + info->state = STATE_PREPARED; exec_cmd = prepare_command_pool(info, command, column, page_addr); if (exec_cmd) { init_completion(&info->cmd_complete); @@ -650,8 +650,8 @@ static void pxa3xx_nand_cmdfunc(struct mtd_info *mtd, unsigned command, /* Stop State Machine for next command cycle */ pxa3xx_nand_stop(info); } - info->state = STATE_IDLE; } + info->state = STATE_IDLE; } static void pxa3xx_nand_write_page_hwecc(struct mtd_info *mtd, @@ -664,7 +664,8 @@ static void pxa3xx_nand_write_page_hwecc(struct mtd_info *mtd, static int pxa3xx_nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, uint8_t *buf, int page) { - struct pxa3xx_nand_info *info = mtd->priv; + struct pxa3xx_nand_host *host = mtd->priv; + struct pxa3xx_nand_info *info = host->info_data; chip->read_buf(mtd, buf, mtd->writesize); chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); @@ -695,7 +696,8 @@ static int pxa3xx_nand_read_page_hwecc(struct mtd_info *mtd, static uint8_t pxa3xx_nand_read_byte(struct mtd_info *mtd) { - struct pxa3xx_nand_info *info = mtd->priv; + struct pxa3xx_nand_host *host = mtd->priv; + struct pxa3xx_nand_info *info = host->info_data; char retval = 0xFF; if (info->buf_start < info->buf_count) @@ -707,7 +709,8 @@ static uint8_t pxa3xx_nand_read_byte(struct mtd_info *mtd) static u16 pxa3xx_nand_read_word(struct mtd_info *mtd) { - struct pxa3xx_nand_info *info = mtd->priv; + struct pxa3xx_nand_host *host = mtd->priv; + struct pxa3xx_nand_info *info = host->info_data; u16 retval = 0xFFFF; if (!(info->buf_start & 0x01) && info->buf_start < info->buf_count) { @@ -719,7 +722,8 @@ static u16 pxa3xx_nand_read_word(struct mtd_info *mtd) static void pxa3xx_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) { - struct pxa3xx_nand_info *info = mtd->priv; + struct pxa3xx_nand_host *host = mtd->priv; + struct pxa3xx_nand_info *info = host->info_data; int real_len = min_t(size_t, len, info->buf_count - info->buf_start); memcpy(buf, info->data_buff + info->buf_start, real_len); @@ -729,7 +733,8 @@ static void pxa3xx_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) static void pxa3xx_nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) { - struct pxa3xx_nand_info *info = mtd->priv; + struct pxa3xx_nand_host *host = mtd->priv; + struct pxa3xx_nand_info *info = host->info_data; int real_len = min_t(size_t, len, info->buf_count - info->buf_start); memcpy(info->data_buff + info->buf_start, buf, real_len); @@ -749,7 +754,8 @@ static void pxa3xx_nand_select_chip(struct mtd_info *mtd, int chip) static int pxa3xx_nand_waitfunc(struct mtd_info *mtd, struct nand_chip *this) { - struct pxa3xx_nand_info *info = mtd->priv; + struct pxa3xx_nand_host *host = mtd->priv; + struct pxa3xx_nand_info *info = host->info_data; /* pxa3xx_nand_send_command has waited for command complete */ if (this->state == FL_WRITING || this->state == FL_ERASING) { @@ -772,6 +778,7 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info, { struct platform_device *pdev = info->pdev; struct pxa3xx_nand_platform_data *pdata = pdev->dev.platform_data; + struct pxa3xx_nand_host *host = info->host; uint32_t ndcr = 0x0; /* enable all interrupts */ if (f->page_size != 2048 && f->page_size != 512) { @@ -785,45 +792,52 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info, } /* calculate flash information */ - info->cmdset = &default_cmdset; - info->page_size = f->page_size; - info->read_id_bytes = (f->page_size == 2048) ? 4 : 2; + host->cmdset = &default_cmdset; + host->page_size = f->page_size; + host->read_id_bytes = (f->page_size == 2048) ? 4 : 2; /* calculate addressing information */ - info->col_addr_cycles = (f->page_size == 2048) ? 2 : 1; + host->col_addr_cycles = (f->page_size == 2048) ? 2 : 1; if (f->num_blocks * f->page_per_block > 65536) - info->row_addr_cycles = 3; + host->row_addr_cycles = 3; else - info->row_addr_cycles = 2; + host->row_addr_cycles = 2; ndcr |= (pdata->enable_arbiter) ? NDCR_ND_ARB_EN : 0; - ndcr |= (info->col_addr_cycles == 2) ? NDCR_RA_START : 0; + ndcr |= (host->col_addr_cycles == 2) ? NDCR_RA_START : 0; ndcr |= (f->page_per_block == 64) ? NDCR_PG_PER_BLK : 0; ndcr |= (f->page_size == 2048) ? NDCR_PAGE_SZ : 0; ndcr |= (f->flash_width == 16) ? NDCR_DWIDTH_M : 0; ndcr |= (f->dfc_width == 16) ? NDCR_DWIDTH_C : 0; - ndcr |= NDCR_RD_ID_CNT(info->read_id_bytes); + ndcr |= NDCR_RD_ID_CNT(host->read_id_bytes); ndcr |= NDCR_SPARE_EN; /* enable spare by default */ - info->reg_ndcr = ndcr; + host->reg_ndcr = ndcr; - pxa3xx_nand_set_timing(info, f->timing); + pxa3xx_nand_set_timing(host, f->timing); return 0; } static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info) { + struct pxa3xx_nand_host *host = info->host; uint32_t ndcr = nand_readl(info, NDCR); - info->page_size = ndcr & NDCR_PAGE_SZ ? 2048 : 512; - /* set info fields needed to read id */ - info->read_id_bytes = (info->page_size == 2048) ? 4 : 2; - info->reg_ndcr = ndcr & ~NDCR_INT_MASK; - info->cmdset = &default_cmdset; - info->ndtr0cs0 = nand_readl(info, NDTR0CS0); - info->ndtr1cs0 = nand_readl(info, NDTR1CS0); + if (ndcr & NDCR_PAGE_SZ) { + host->page_size = 2048; + host->read_id_bytes = 4; + } else { + host->page_size = 512; + host->read_id_bytes = 2; + } + + host->reg_ndcr = ndcr & ~NDCR_INT_MASK; + host->cmdset = &default_cmdset; + + host->ndtr0cs0 = nand_readl(info, NDTR0CS0); + host->ndtr1cs0 = nand_readl(info, NDTR1CS0); return 0; } @@ -853,7 +867,6 @@ static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info) return -ENOMEM; } - info->data_buff_size = MAX_BUFF_SIZE; info->data_desc = (void *)info->data_buff + data_desc_offset; info->data_desc_addr = info->data_buff_phys + data_desc_offset; @@ -861,7 +874,7 @@ static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info) pxa3xx_nand_data_dma_irq, info); if (info->data_dma_ch < 0) { dev_err(&pdev->dev, "failed to request data dma\n"); - dma_free_coherent(&pdev->dev, info->data_buff_size, + dma_free_coherent(&pdev->dev, MAX_BUFF_SIZE, info->data_buff, info->data_buff_phys); return info->data_dma_ch; } @@ -871,21 +884,25 @@ static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info) static int pxa3xx_nand_sensing(struct pxa3xx_nand_info *info) { - struct mtd_info *mtd = info->mtd; - struct nand_chip *chip = mtd->priv; + struct mtd_info *mtd = info->host->mtd; + int ret; /* use the common timing to make a try */ - pxa3xx_nand_config_flash(info, &builtin_flash_types[0]); - chip->cmdfunc(mtd, NAND_CMD_RESET, 0, 0); + ret = pxa3xx_nand_config_flash(info, &builtin_flash_types[0]); + if (ret) + return ret; + + pxa3xx_nand_cmdfunc(mtd, NAND_CMD_RESET, 0, 0); if (info->is_ready) - return 1; - else return 0; + + return -ENODEV; } static int pxa3xx_nand_scan(struct mtd_info *mtd) { - struct pxa3xx_nand_info *info = mtd->priv; + struct pxa3xx_nand_host *host = mtd->priv; + struct pxa3xx_nand_info *info = host->info_data; struct platform_device *pdev = info->pdev; struct pxa3xx_nand_platform_data *pdata = pdev->dev.platform_data; struct nand_flash_dev pxa3xx_flash_ids[2], *def = NULL; @@ -899,12 +916,10 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) goto KEEP_CONFIG; ret = pxa3xx_nand_sensing(info); - if (!ret) { - kfree(mtd); - info->mtd = NULL; + if (ret) { dev_info(&info->pdev->dev, "There is no nand chip on cs 0!\n"); - return -EINVAL; + return ret; } chip->cmdfunc(mtd, NAND_CMD_READID, 0, 0); @@ -912,8 +927,6 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) if (id != 0) dev_info(&info->pdev->dev, "Detect a flash id %x\n", id); else { - kfree(mtd); - info->mtd = NULL; dev_warn(&info->pdev->dev, "Read out ID 0, potential timing set wrong!!\n"); @@ -933,14 +946,17 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) } if (i >= (ARRAY_SIZE(builtin_flash_types) + pdata->num_flash - 1)) { - kfree(mtd); - info->mtd = NULL; dev_err(&info->pdev->dev, "ERROR!! flash not defined!!!\n"); return -EINVAL; } - pxa3xx_nand_config_flash(info, f); + ret = pxa3xx_nand_config_flash(info, f); + if (ret) { + dev_err(&info->pdev->dev, "ERROR! Configure failed\n"); + return ret; + } + pxa3xx_flash_ids[0].name = f->name; pxa3xx_flash_ids[0].id = (f->chip_id >> 8) & 0xffff; pxa3xx_flash_ids[0].pagesize = f->page_size; @@ -952,47 +968,56 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) pxa3xx_flash_ids[1].name = NULL; def = pxa3xx_flash_ids; KEEP_CONFIG: + chip->ecc.mode = NAND_ECC_HW; + chip->ecc.size = host->page_size; + + chip->options = NAND_NO_AUTOINCR; + chip->options |= NAND_NO_READRDY; + if (host->reg_ndcr & NDCR_DWIDTH_M) + chip->options |= NAND_BUSWIDTH_16; + if (nand_scan_ident(mtd, 1, def)) return -ENODEV; /* calculate addressing information */ - info->col_addr_cycles = (mtd->writesize >= 2048) ? 2 : 1; + if (mtd->writesize >= 2048) + host->col_addr_cycles = 2; + else + host->col_addr_cycles = 1; + info->oob_buff = info->data_buff + mtd->writesize; if ((mtd->size >> chip->page_shift) > 65536) - info->row_addr_cycles = 3; + host->row_addr_cycles = 3; else - info->row_addr_cycles = 2; - mtd->name = mtd_names[0]; - chip->ecc.mode = NAND_ECC_HW; - chip->ecc.size = info->page_size; - - chip->options = (info->reg_ndcr & NDCR_DWIDTH_M) ? NAND_BUSWIDTH_16 : 0; - chip->options |= NAND_NO_AUTOINCR; - chip->options |= NAND_NO_READRDY; + host->row_addr_cycles = 2; + mtd->name = mtd_names[0]; return nand_scan_tail(mtd); } -static -struct pxa3xx_nand_info *alloc_nand_resource(struct platform_device *pdev) +static int alloc_nand_resource(struct platform_device *pdev) { struct pxa3xx_nand_info *info; + struct pxa3xx_nand_host *host; struct nand_chip *chip; struct mtd_info *mtd; struct resource *r; int ret, irq; - mtd = kzalloc(sizeof(struct mtd_info) + sizeof(struct pxa3xx_nand_info), + info = kzalloc(sizeof(*info) + sizeof(*mtd) + sizeof(*host), GFP_KERNEL); - if (!mtd) { + if (!info) { dev_err(&pdev->dev, "failed to allocate memory\n"); - return NULL; + return -ENOMEM; } - info = (struct pxa3xx_nand_info *)(&mtd[1]); + mtd = (struct mtd_info *)(&info[1]); chip = (struct nand_chip *)(&mtd[1]); + host = (struct pxa3xx_nand_host *)chip; info->pdev = pdev; - info->mtd = mtd; - mtd->priv = info; + info->host = host; + host->mtd = mtd; + host->info_data = info; + mtd->priv = host; mtd->owner = THIS_MODULE; chip->ecc.read_page = pxa3xx_nand_read_page_hwecc; @@ -1000,7 +1025,6 @@ struct pxa3xx_nand_info *alloc_nand_resource(struct platform_device *pdev) chip->controller = &info->controller; chip->waitfunc = pxa3xx_nand_waitfunc; chip->select_chip = pxa3xx_nand_select_chip; - chip->dev_ready = pxa3xx_nand_dev_ready; chip->cmdfunc = pxa3xx_nand_cmdfunc; chip->read_word = pxa3xx_nand_read_word; chip->read_byte = pxa3xx_nand_read_byte; @@ -1079,13 +1103,13 @@ struct pxa3xx_nand_info *alloc_nand_resource(struct platform_device *pdev) platform_set_drvdata(pdev, info); - return info; + return 0; fail_free_buf: free_irq(irq, info); if (use_dma) { pxa_free_dma(info->data_dma_ch); - dma_free_coherent(&pdev->dev, info->data_buff_size, + dma_free_coherent(&pdev->dev, MAX_BUFF_SIZE, info->data_buff, info->data_buff_phys); } else kfree(info->data_buff); @@ -1097,17 +1121,19 @@ fail_put_clk: clk_disable(info->clk); clk_put(info->clk); fail_free_mtd: - kfree(mtd); - return NULL; + kfree(info); + return ret; } static int pxa3xx_nand_remove(struct platform_device *pdev) { struct pxa3xx_nand_info *info = platform_get_drvdata(pdev); - struct mtd_info *mtd = info->mtd; struct resource *r; int irq; + if (!info) + return 0; + platform_set_drvdata(pdev, NULL); irq = platform_get_irq(pdev, 0); @@ -1115,7 +1141,7 @@ static int pxa3xx_nand_remove(struct platform_device *pdev) free_irq(irq, info); if (use_dma) { pxa_free_dma(info->data_dma_ch); - dma_free_writecombine(&pdev->dev, info->data_buff_size, + dma_free_writecombine(&pdev->dev, MAX_BUFF_SIZE, info->data_buff, info->data_buff_phys); } else kfree(info->data_buff); @@ -1127,10 +1153,8 @@ static int pxa3xx_nand_remove(struct platform_device *pdev) clk_disable(info->clk); clk_put(info->clk); - if (mtd) { - nand_release(mtd); - kfree(mtd); - } + nand_release(info->host->mtd); + kfree(info); return 0; } @@ -1138,6 +1162,7 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) { struct pxa3xx_nand_platform_data *pdata; struct pxa3xx_nand_info *info; + int ret; pdata = pdev->dev.platform_data; if (!pdata) { @@ -1145,17 +1170,20 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) return -ENODEV; } - info = alloc_nand_resource(pdev); - if (info == NULL) - return -ENOMEM; + ret = alloc_nand_resource(pdev); + if (ret) { + dev_err(&pdev->dev, "alloc nand resource failed\n"); + return ret; + } - if (pxa3xx_nand_scan(info->mtd)) { + info = platform_get_drvdata(pdev); + if (pxa3xx_nand_scan(info->host->mtd)) { dev_err(&pdev->dev, "failed to scan nand\n"); pxa3xx_nand_remove(pdev); return -ENODEV; } - return mtd_device_parse_register(info->mtd, NULL, 0, + return mtd_device_parse_register(info->host->mtd, NULL, 0, pdata->parts, pdata->nr_parts); } @@ -1182,8 +1210,8 @@ static int pxa3xx_nand_resume(struct platform_device *pdev) /* We don't want to handle interrupt without calling mtd routine */ disable_int(info, NDCR_INT_MASK); - nand_writel(info, NDTR0CS0, info->ndtr0cs0); - nand_writel(info, NDTR1CS0, info->ndtr1cs0); + nand_writel(info, NDTR0CS0, info->host->ndtr0cs0); + nand_writel(info, NDTR1CS0, info->host->ndtr1cs0); /* * As the spec says, the NDSR would be updated to 0x1800 when -- cgit v0.10.2 From f3c8cfc237927cc095e8bcb1e3794cfa76390bab Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Thu, 14 Jul 2011 20:44:33 -0700 Subject: mtd: pxa3xx_nand: enable multiple chip select support Current pxa3xx_nand controller has two chip select which both be workable. This patch enable this feature. Update platform driver to support this feature. Another notice should be taken that: When you want to use this feature, you should not enable the keep configuration feature, for two chip select could be attached with different nand chip. The different page size and timing requirement make the keep configuration impossible. Signed-off-by: Lei Wen diff --git a/arch/arm/mach-mmp/aspenite.c b/arch/arm/mach-mmp/aspenite.c index 06b5fa8..c4996f3 100644 --- a/arch/arm/mach-mmp/aspenite.c +++ b/arch/arm/mach-mmp/aspenite.c @@ -167,8 +167,9 @@ static struct mtd_partition aspenite_nand_partitions[] = { static struct pxa3xx_nand_platform_data aspenite_nand_info = { .enable_arbiter = 1, - .parts = aspenite_nand_partitions, - .nr_parts = ARRAY_SIZE(aspenite_nand_partitions), + .num_cs = 1, + .parts[0] = aspenite_nand_partitions, + .nr_parts[0] = ARRAY_SIZE(aspenite_nand_partitions), }; static struct i2c_board_info aspenite_i2c_info[] __initdata = { diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c index b6a5134..eac3846 100644 --- a/arch/arm/mach-pxa/cm-x300.c +++ b/arch/arm/mach-pxa/cm-x300.c @@ -424,8 +424,9 @@ static struct mtd_partition cm_x300_nand_partitions[] = { static struct pxa3xx_nand_platform_data cm_x300_nand_info = { .enable_arbiter = 1, .keep_config = 1, - .parts = cm_x300_nand_partitions, - .nr_parts = ARRAY_SIZE(cm_x300_nand_partitions), + .num_cs = 1, + .parts[0] = cm_x300_nand_partitions, + .nr_parts[0] = ARRAY_SIZE(cm_x300_nand_partitions), }; static void __init cm_x300_init_nand(void) diff --git a/arch/arm/mach-pxa/colibri-pxa3xx.c b/arch/arm/mach-pxa/colibri-pxa3xx.c index 3f9be41..2b8ca0d 100644 --- a/arch/arm/mach-pxa/colibri-pxa3xx.c +++ b/arch/arm/mach-pxa/colibri-pxa3xx.c @@ -139,8 +139,9 @@ static struct mtd_partition colibri_nand_partitions[] = { static struct pxa3xx_nand_platform_data colibri_nand_info = { .enable_arbiter = 1, .keep_config = 1, - .parts = colibri_nand_partitions, - .nr_parts = ARRAY_SIZE(colibri_nand_partitions), + .num_cs = 1, + .parts[0] = colibri_nand_partitions, + .nr_parts[0] = ARRAY_SIZE(colibri_nand_partitions), }; void __init colibri_pxa3xx_init_nand(void) diff --git a/arch/arm/mach-pxa/littleton.c b/arch/arm/mach-pxa/littleton.c index 8f97e15..cd9fda3 100644 --- a/arch/arm/mach-pxa/littleton.c +++ b/arch/arm/mach-pxa/littleton.c @@ -325,8 +325,9 @@ static struct mtd_partition littleton_nand_partitions[] = { static struct pxa3xx_nand_platform_data littleton_nand_info = { .enable_arbiter = 1, - .parts = littleton_nand_partitions, - .nr_parts = ARRAY_SIZE(littleton_nand_partitions), + .num_cs = 1, + .parts[0] = littleton_nand_partitions, + .nr_parts[0] = ARRAY_SIZE(littleton_nand_partitions), }; static void __init littleton_init_nand(void) diff --git a/arch/arm/mach-pxa/mxm8x10.c b/arch/arm/mach-pxa/mxm8x10.c index b5a8fd3..90928d6 100644 --- a/arch/arm/mach-pxa/mxm8x10.c +++ b/arch/arm/mach-pxa/mxm8x10.c @@ -389,10 +389,11 @@ static struct mtd_partition mxm_8x10_nand_partitions[] = { }; static struct pxa3xx_nand_platform_data mxm_8x10_nand_info = { - .enable_arbiter = 1, - .keep_config = 1, - .parts = mxm_8x10_nand_partitions, - .nr_parts = ARRAY_SIZE(mxm_8x10_nand_partitions) + .enable_arbiter = 1, + .keep_config = 1, + .num_cs = 1, + .parts[0] = mxm_8x10_nand_partitions, + .nr_parts[0] = ARRAY_SIZE(mxm_8x10_nand_partitions) }; static void __init mxm_8x10_nand_init(void) diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c index bbcd905..6a2f353 100644 --- a/arch/arm/mach-pxa/raumfeld.c +++ b/arch/arm/mach-pxa/raumfeld.c @@ -346,8 +346,9 @@ static struct mtd_partition raumfeld_nand_partitions[] = { static struct pxa3xx_nand_platform_data raumfeld_nand_info = { .enable_arbiter = 1, .keep_config = 1, - .parts = raumfeld_nand_partitions, - .nr_parts = ARRAY_SIZE(raumfeld_nand_partitions), + .num_cs = 1, + .parts[0] = raumfeld_nand_partitions, + .nr_parts[0] = ARRAY_SIZE(raumfeld_nand_partitions), }; /** diff --git a/arch/arm/mach-pxa/zylonite.c b/arch/arm/mach-pxa/zylonite.c index 15ec66b..90fbf87 100644 --- a/arch/arm/mach-pxa/zylonite.c +++ b/arch/arm/mach-pxa/zylonite.c @@ -366,8 +366,9 @@ static struct mtd_partition zylonite_nand_partitions[] = { static struct pxa3xx_nand_platform_data zylonite_nand_info = { .enable_arbiter = 1, - .parts = zylonite_nand_partitions, - .nr_parts = ARRAY_SIZE(zylonite_nand_partitions), + .num_cs = 1, + .parts[0] = zylonite_nand_partitions, + .nr_parts[0] = ARRAY_SIZE(zylonite_nand_partitions), }; static void __init zylonite_init_nand(void) diff --git a/arch/arm/plat-pxa/include/plat/pxa3xx_nand.h b/arch/arm/plat-pxa/include/plat/pxa3xx_nand.h index 442301f..c42f39f 100644 --- a/arch/arm/plat-pxa/include/plat/pxa3xx_nand.h +++ b/arch/arm/plat-pxa/include/plat/pxa3xx_nand.h @@ -41,6 +41,19 @@ struct pxa3xx_nand_flash { struct pxa3xx_nand_timing *timing; /* NAND Flash timing */ }; +/* + * Current pxa3xx_nand controller has two chip select which + * both be workable. + * + * Notice should be taken that: + * When you want to use this feature, you should not enable the + * keep configuration feature, for two chip select could be + * attached with different nand chip. The different page size + * and timing requirement make the keep configuration impossible. + */ + +/* The max num of chip select current support */ +#define NUM_CHIP_SELECT (2) struct pxa3xx_nand_platform_data { /* the data flash bus is shared between the Static Memory @@ -52,8 +65,11 @@ struct pxa3xx_nand_platform_data { /* allow platform code to keep OBM/bootloader defined NFC config */ int keep_config; - const struct mtd_partition *parts; - unsigned int nr_parts; + /* indicate how many chip selects will be used */ + int num_cs; + + const struct mtd_partition *parts[NUM_CHIP_SELECT]; + unsigned int nr_parts[NUM_CHIP_SELECT]; const struct pxa3xx_nand_flash * flash; size_t num_flash; diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 97b6894..9eb7f87 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -130,6 +130,7 @@ struct pxa3xx_nand_host { /* page size of attached chip */ unsigned int page_size; int use_ecc; + int cs; /* calculated from pxa3xx_nand_flash data */ unsigned int col_addr_cycles; @@ -165,9 +166,10 @@ struct pxa3xx_nand_info { struct pxa_dma_desc *data_desc; dma_addr_t data_desc_addr; - struct pxa3xx_nand_host *host; + struct pxa3xx_nand_host *host[NUM_CHIP_SELECT]; unsigned int state; + int cs; int use_ecc; /* use HW ECC ? */ int use_dma; /* use DMA ? */ int is_ready; @@ -226,7 +228,7 @@ static struct pxa3xx_nand_flash builtin_flash_types[] = { /* Define a default flash type setting serve as flash detecting only */ #define DEFAULT_FLASH_TYPE (&builtin_flash_types[0]) -const char *mtd_names[] = {"pxa3xx_nand-0", NULL}; +const char *mtd_names[] = {"pxa3xx_nand-0", "pxa3xx_nand-1", NULL}; #define NDTR0_tCH(c) (min((c), 7) << 19) #define NDTR0_tCS(c) (min((c), 7) << 16) @@ -268,7 +270,7 @@ static void pxa3xx_nand_set_timing(struct pxa3xx_nand_host *host, static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info) { - struct pxa3xx_nand_host *host = info->host; + struct pxa3xx_nand_host *host = info->host[info->cs]; int oob_enable = host->reg_ndcr & NDCR_SPARE_EN; info->data_size = host->page_size; @@ -295,7 +297,7 @@ static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info) */ static void pxa3xx_nand_start(struct pxa3xx_nand_info *info) { - struct pxa3xx_nand_host *host = info->host; + struct pxa3xx_nand_host *host = info->host[info->cs]; uint32_t ndcr; ndcr = host->reg_ndcr; @@ -420,6 +422,15 @@ static irqreturn_t pxa3xx_nand_irq(int irq, void *devid) { struct pxa3xx_nand_info *info = devid; unsigned int status, is_completed = 0; + unsigned int ready, cmd_done; + + if (info->cs == 0) { + ready = NDSR_FLASH_RDY; + cmd_done = NDSR_CS0_CMDD; + } else { + ready = NDSR_RDY; + cmd_done = NDSR_CS1_CMDD; + } status = nand_readl(info, NDSR); @@ -441,11 +452,11 @@ static irqreturn_t pxa3xx_nand_irq(int irq, void *devid) handle_data_pio(info); } } - if (status & NDSR_CS0_CMDD) { + if (status & cmd_done) { info->state = STATE_CMD_DONE; is_completed = 1; } - if (status & NDSR_FLASH_RDY) { + if (status & ready) { info->is_ready = 1; info->state = STATE_READY; } @@ -480,9 +491,11 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, { uint16_t cmd; int addr_cycle, exec_cmd; - struct pxa3xx_nand_host *host = info->host; - struct mtd_info *mtd = host->mtd; + struct pxa3xx_nand_host *host; + struct mtd_info *mtd; + host = info->host[info->cs]; + mtd = host->mtd; addr_cycle = 0; exec_cmd = 1; @@ -492,8 +505,11 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, info->oob_size = 0; info->use_ecc = 0; info->is_ready = 0; - info->ndcb0 = 0; info->retcode = ERR_NONE; + if (info->cs != 0) + info->ndcb0 = NDCB0_CSEL; + else + info->ndcb0 = 0; switch (command) { case NAND_CMD_READ0: @@ -637,6 +653,17 @@ static void pxa3xx_nand_cmdfunc(struct mtd_info *mtd, unsigned command, if (host->reg_ndcr & NDCR_DWIDTH_M) column /= 2; + /* + * There may be different NAND chip hooked to + * different chip select, so check whether + * chip select has been changed, if yes, reset the timing + */ + if (info->cs != host->cs) { + info->cs = host->cs; + nand_writel(info, NDTR0CS0, host->ndtr0cs0); + nand_writel(info, NDTR1CS0, host->ndtr1cs0); + } + info->state = STATE_PREPARED; exec_cmd = prepare_command_pool(info, command, column, page_addr); if (exec_cmd) { @@ -778,7 +805,7 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info, { struct platform_device *pdev = info->pdev; struct pxa3xx_nand_platform_data *pdata = pdev->dev.platform_data; - struct pxa3xx_nand_host *host = info->host; + struct pxa3xx_nand_host *host = info->host[info->cs]; uint32_t ndcr = 0x0; /* enable all interrupts */ if (f->page_size != 2048 && f->page_size != 512) { @@ -822,7 +849,11 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info, static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info) { - struct pxa3xx_nand_host *host = info->host; + /* + * We set 0 by hard coding here, for we don't support keep_config + * when there is more than one chip attached to the controller + */ + struct pxa3xx_nand_host *host = info->host[0]; uint32_t ndcr = nand_readl(info, NDCR); if (ndcr & NDCR_PAGE_SZ) { @@ -884,9 +915,9 @@ static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info) static int pxa3xx_nand_sensing(struct pxa3xx_nand_info *info) { - struct mtd_info *mtd = info->host->mtd; + struct mtd_info *mtd; int ret; - + mtd = info->host[info->cs]->mtd; /* use the common timing to make a try */ ret = pxa3xx_nand_config_flash(info, &builtin_flash_types[0]); if (ret) @@ -917,7 +948,8 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) ret = pxa3xx_nand_sensing(info); if (ret) { - dev_info(&info->pdev->dev, "There is no nand chip on cs 0!\n"); + dev_info(&info->pdev->dev, "There is no chip on cs %d!\n", + info->cs); return ret; } @@ -996,41 +1028,47 @@ KEEP_CONFIG: static int alloc_nand_resource(struct platform_device *pdev) { + struct pxa3xx_nand_platform_data *pdata; struct pxa3xx_nand_info *info; struct pxa3xx_nand_host *host; struct nand_chip *chip; struct mtd_info *mtd; struct resource *r; - int ret, irq; + int ret, irq, cs; - info = kzalloc(sizeof(*info) + sizeof(*mtd) + sizeof(*host), - GFP_KERNEL); + pdata = pdev->dev.platform_data; + info = kzalloc(sizeof(*info) + (sizeof(*mtd) + + sizeof(*host)) * pdata->num_cs, GFP_KERNEL); if (!info) { dev_err(&pdev->dev, "failed to allocate memory\n"); return -ENOMEM; } - mtd = (struct mtd_info *)(&info[1]); - chip = (struct nand_chip *)(&mtd[1]); - host = (struct pxa3xx_nand_host *)chip; info->pdev = pdev; - info->host = host; - host->mtd = mtd; - host->info_data = info; - mtd->priv = host; - mtd->owner = THIS_MODULE; - - chip->ecc.read_page = pxa3xx_nand_read_page_hwecc; - chip->ecc.write_page = pxa3xx_nand_write_page_hwecc; - chip->controller = &info->controller; - chip->waitfunc = pxa3xx_nand_waitfunc; - chip->select_chip = pxa3xx_nand_select_chip; - chip->cmdfunc = pxa3xx_nand_cmdfunc; - chip->read_word = pxa3xx_nand_read_word; - chip->read_byte = pxa3xx_nand_read_byte; - chip->read_buf = pxa3xx_nand_read_buf; - chip->write_buf = pxa3xx_nand_write_buf; - chip->verify_buf = pxa3xx_nand_verify_buf; + for (cs = 0; cs < pdata->num_cs; cs++) { + mtd = (struct mtd_info *)((unsigned int)&info[1] + + (sizeof(*mtd) + sizeof(*host)) * cs); + chip = (struct nand_chip *)(&mtd[1]); + host = (struct pxa3xx_nand_host *)chip; + info->host[cs] = host; + host->mtd = mtd; + host->cs = cs; + host->info_data = info; + mtd->priv = host; + mtd->owner = THIS_MODULE; + + chip->ecc.read_page = pxa3xx_nand_read_page_hwecc; + chip->ecc.write_page = pxa3xx_nand_write_page_hwecc; + chip->controller = &info->controller; + chip->waitfunc = pxa3xx_nand_waitfunc; + chip->select_chip = pxa3xx_nand_select_chip; + chip->cmdfunc = pxa3xx_nand_cmdfunc; + chip->read_word = pxa3xx_nand_read_word; + chip->read_byte = pxa3xx_nand_read_byte; + chip->read_buf = pxa3xx_nand_read_buf; + chip->write_buf = pxa3xx_nand_write_buf; + chip->verify_buf = pxa3xx_nand_verify_buf; + } spin_lock_init(&chip->controller->lock); init_waitqueue_head(&chip->controller->wq); @@ -1128,12 +1166,14 @@ fail_free_mtd: static int pxa3xx_nand_remove(struct platform_device *pdev) { struct pxa3xx_nand_info *info = platform_get_drvdata(pdev); + struct pxa3xx_nand_platform_data *pdata; struct resource *r; - int irq; + int irq, cs; if (!info) return 0; + pdata = pdev->dev.platform_data; platform_set_drvdata(pdev, NULL); irq = platform_get_irq(pdev, 0); @@ -1153,7 +1193,8 @@ static int pxa3xx_nand_remove(struct platform_device *pdev) clk_disable(info->clk); clk_put(info->clk); - nand_release(info->host->mtd); + for (cs = 0; cs < pdata->num_cs; cs++) + nand_release(info->host[cs]->mtd); kfree(info); return 0; } @@ -1162,7 +1203,7 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) { struct pxa3xx_nand_platform_data *pdata; struct pxa3xx_nand_info *info; - int ret; + int ret, cs, probe_success; pdata = pdev->dev.platform_data; if (!pdata) { @@ -1177,41 +1218,69 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) } info = platform_get_drvdata(pdev); - if (pxa3xx_nand_scan(info->host->mtd)) { - dev_err(&pdev->dev, "failed to scan nand\n"); + probe_success = 0; + for (cs = 0; cs < pdata->num_cs; cs++) { + info->cs = cs; + ret = pxa3xx_nand_scan(info->host[cs]->mtd); + if (ret) { + dev_warn(&pdev->dev, "failed to scan nand at cs %d\n", + cs); + continue; + } + + ret = mtd_device_parse_register(info->host[cs]->mtd, NULL, 0, + pdata->parts[cs], pdata->nr_parts[cs]); + if (!ret) + probe_success = 1; + } + + if (!probe_success) { pxa3xx_nand_remove(pdev); return -ENODEV; } - return mtd_device_parse_register(info->host->mtd, NULL, 0, - pdata->parts, pdata->nr_parts); + return 0; } #ifdef CONFIG_PM static int pxa3xx_nand_suspend(struct platform_device *pdev, pm_message_t state) { struct pxa3xx_nand_info *info = platform_get_drvdata(pdev); - struct mtd_info *mtd = info->mtd; + struct pxa3xx_nand_platform_data *pdata; + struct mtd_info *mtd; + int cs; + pdata = pdev->dev.platform_data; if (info->state) { dev_err(&pdev->dev, "driver busy, state = %d\n", info->state); return -EAGAIN; } - mtd->suspend(mtd); + for (cs = 0; cs < pdata->num_cs; cs++) { + mtd = info->host[cs]->mtd; + mtd->suspend(mtd); + } + return 0; } static int pxa3xx_nand_resume(struct platform_device *pdev) { struct pxa3xx_nand_info *info = platform_get_drvdata(pdev); - struct mtd_info *mtd = info->mtd; + struct pxa3xx_nand_platform_data *pdata; + struct mtd_info *mtd; + int cs; + pdata = pdev->dev.platform_data; /* We don't want to handle interrupt without calling mtd routine */ disable_int(info, NDCR_INT_MASK); - nand_writel(info, NDTR0CS0, info->host->ndtr0cs0); - nand_writel(info, NDTR1CS0, info->host->ndtr1cs0); + /* + * Directly set the chip select to a invalid value, + * then the driver would reset the timing according + * to current chip select at the beginning of cmdfunc + */ + info->cs = 0xff; /* * As the spec says, the NDSR would be updated to 0x1800 when @@ -1220,7 +1289,11 @@ static int pxa3xx_nand_resume(struct platform_device *pdev) * all status before resume */ nand_writel(info, NDSR, NDSR_MASK); - mtd->resume(mtd); + for (cs = 0; cs < pdata->num_cs; cs++) { + mtd = info->host[cs]->mtd; + mtd->resume(mtd); + } + return 0; } #else -- cgit v0.10.2 From b94e757c4b3aafa52f8b82efed8660427a8d2880 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Fri, 15 Jul 2011 16:38:56 +0800 Subject: mtd: dataflash: add device tree probe support It adds device tree probe support for mtd_dataflash driver. Signed-off-by: Shawn Guo Signed-off-by: Artem Bityutskiy diff --git a/Documentation/devicetree/bindings/mtd/atmel-dataflash.txt b/Documentation/devicetree/bindings/mtd/atmel-dataflash.txt new file mode 100644 index 0000000..ef66ddd --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/atmel-dataflash.txt @@ -0,0 +1,14 @@ +* Atmel Data Flash + +Required properties: +- compatible : "atmel,", "atmel,", "atmel,dataflash". + +Example: + +flash@1 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "atmel,at45db321d", "atmel,at45", "atmel,dataflash"; + spi-max-frequency = <25000000>; + reg = <1>; +}; diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index 8f6b02c..c86fa57 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -17,6 +17,8 @@ #include #include #include +#include +#include #include #include @@ -24,7 +26,6 @@ #include #include - /* * DataFlash is a kind of SPI flash. Most AT45 chips have two buffers in * each chip, which may be used for double buffered I/O; but this driver @@ -98,6 +99,16 @@ struct dataflash { struct mtd_info mtd; }; +#ifdef CONFIG_OF +static const struct of_device_id dataflash_dt_ids[] = { + { .compatible = "atmel,at45", }, + { .compatible = "atmel,dataflash", }, + { /* sentinel */ } +}; +#else +#define dataflash_dt_ids NULL +#endif + /* ......................................................................... */ /* @@ -634,6 +645,7 @@ add_dataflash_otp(struct spi_device *spi, char *name, { struct dataflash *priv; struct mtd_info *device; + struct mtd_part_parser_data ppdata; struct flash_platform_data *pdata = spi->dev.platform_data; char *otp_tag = ""; int err = 0; @@ -675,7 +687,8 @@ add_dataflash_otp(struct spi_device *spi, char *name, pagesize, otp_tag); dev_set_drvdata(&spi->dev, priv); - err = mtd_device_parse_register(device, NULL, 0, + ppdata.of_node = spi->dev.of_node; + err = mtd_device_parse_register(device, NULL, &ppdata, pdata ? pdata->parts : NULL, pdata ? pdata->nr_parts : 0); @@ -926,6 +939,7 @@ static struct spi_driver dataflash_driver = { .name = "mtd_dataflash", .bus = &spi_bus_type, .owner = THIS_MODULE, + .of_match_table = dataflash_dt_ids, }, .probe = dataflash_probe, -- cgit v0.10.2 From a0f5080ecc1c75f9c08591d9b0f48451e7ac8ddc Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:06 -0700 Subject: mtd: nand: change KERN_DEBUG to KERN_INFO Soon we will change many printk statements into pr_* statements, i.e., 'printk(KERN_INFO, ...)' becomes 'pr_info(...)'. However, this means that KERN_DEBUG messages will become pr_debug() statements and therefore will not be activated by default - they must be enabled using dynamic debug. So, for important DEBUG messages, we will simply upgrade these to INFO so that they appear by default. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index a4fcbf1..0d2eaa72 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -219,7 +219,7 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, if (tmp == msk) continue; if (reserved_block_code && (tmp == reserved_block_code)) { - printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%012llx\n", + printk(KERN_INFO "nand_read_bbt: Reserved block at 0x%012llx\n", (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06); mtd->ecc_stats.bbtblocks++; @@ -227,9 +227,9 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, } /* * Leave it for now, if it's matured we can - * move this message to MTD_DEBUG_LEVEL0. + * move this message to pr_debug. */ - printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%012llx\n", + printk(KERN_INFO "nand_read_bbt: Bad block at 0x%012llx\n", (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); /* Factory marked bad or worn out? */ if (tmp == 0) @@ -389,7 +389,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, scan_read_raw(mtd, buf, (loff_t)td->pages[0] << this->page_shift, mtd->writesize, td); td->version[0] = buf[bbt_get_ver_offs(mtd, td)]; - printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", + printk(KERN_INFO "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]); } @@ -398,7 +398,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, scan_read_raw(mtd, buf, (loff_t)md->pages[0] << this->page_shift, mtd->writesize, td); md->version[0] = buf[bbt_get_ver_offs(mtd, md)]; - printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", + printk(KERN_INFO "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]); } return 1; @@ -616,7 +616,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr if (td->pages[i] == -1) printk(KERN_WARNING "Bad block table not found for chip %d\n", i); else - printk(KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], + printk(KERN_INFO "Bad block table found at page %d, version 0x%02X\n", td->pages[i], td->version[i]); } return 0; @@ -847,7 +847,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (res < 0) goto outerr; - printk(KERN_DEBUG "Bad block table written to 0x%012llx, version " + printk(KERN_INFO "Bad block table written to 0x%012llx, version " "0x%02X\n", (unsigned long long)to, td->version[chip]); /* Mark it as used */ -- cgit v0.10.2 From 9a4d4d69018e7b719ba58fa30fcdd60e547776b8 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:07 -0700 Subject: mtd: nand: convert printk() to pr_*() Instead of directly calling printk, it's simpler to use the built-in pr_* functions. This shortens code and allows easy customization through the definition of a pr_fmt() macro (not used currently). Ideally, we could implement much of this with dev_* functions, but the MTD subsystem does not necessarily register all its master `mtd_info.dev` device, so we cannot use dev_* consistently. See: http://lists.infradead.org/pipermail/linux-mtd/2011-July/036950.html Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 250e86f..1d6c81a 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2179,7 +2179,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, /* Reject writes, which are not page aligned */ if (NOTALIGNED(to) || NOTALIGNED(ops->len)) { - printk(KERN_NOTICE "%s: Attempt to write not " + pr_notice("%s: Attempt to write not " "page aligned data\n", __func__); return -EINVAL; } @@ -2570,7 +2570,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, /* Heck if we have a bad block, we do not erase bad blocks! */ if (nand_block_checkbad(mtd, ((loff_t) page) << chip->page_shift, 0, allowbbt)) { - printk(KERN_WARNING "%s: attempt to erase a bad block " + pr_warn("%s: attempt to erase a bad block " "at page 0x%08x\n", __func__, page); instr->state = MTD_ERASE_FAILED; goto erase_exit; @@ -2744,7 +2744,7 @@ static void nand_resume(struct mtd_info *mtd) if (chip->state == FL_PM_SUSPENDED) nand_release_device(mtd); else - printk(KERN_ERR "%s called for a chip which is not " + pr_err("%s called for a chip which is not " "in suspended state\n", __func__); } @@ -2836,13 +2836,13 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, chip->read_byte(mtd) != 'F' || chip->read_byte(mtd) != 'I') return 0; - printk(KERN_INFO "ONFI flash detected\n"); + pr_info("ONFI flash detected\n"); chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1); for (i = 0; i < 3; i++) { chip->read_buf(mtd, (uint8_t *)p, sizeof(*p)); if (onfi_crc16(ONFI_CRC_BASE, (uint8_t *)p, 254) == le16_to_cpu(p->crc)) { - printk(KERN_INFO "ONFI param page %d valid\n", i); + pr_info("ONFI param page %d valid\n", i); break; } } @@ -2866,7 +2866,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, chip->onfi_version = 0; if (!chip->onfi_version) { - printk(KERN_INFO "%s: unsupported ONFI version: %d\n", + pr_info("%s: unsupported ONFI version: %d\n", __func__, val); return 0; } @@ -2932,7 +2932,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, id_data[i] = chip->read_byte(mtd); if (id_data[0] != *maf_id || id_data[1] != *dev_id) { - printk(KERN_INFO "%s: second ID read did not match " + pr_info("%s: second ID read did not match " "%02x,%02x against %02x,%02x\n", __func__, *maf_id, *dev_id, id_data[0], id_data[1]); return ERR_PTR(-ENODEV); @@ -3077,10 +3077,10 @@ ident_done: * chip correct! */ if (busw != (chip->options & NAND_BUSWIDTH_16)) { - printk(KERN_INFO "NAND device: Manufacturer ID:" + pr_info("NAND device: Manufacturer ID:" " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, *dev_id, nand_manuf_ids[maf_idx].name, mtd->name); - printk(KERN_WARNING "NAND bus width %d instead %d bit\n", + pr_warn("NAND bus width %d instead %d bit\n", (chip->options & NAND_BUSWIDTH_16) ? 16 : 8, busw ? 16 : 8); return ERR_PTR(-EINVAL); @@ -3138,7 +3138,7 @@ ident_done: if (mtd->writesize > 512 && chip->cmdfunc == nand_command) chip->cmdfunc = nand_command_lp; - printk(KERN_INFO "NAND device: Manufacturer ID:" + pr_info("NAND device: Manufacturer ID:" " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, *dev_id, nand_manuf_ids[maf_idx].name, chip->onfi_version ? chip->onfi_params.model : type->name); @@ -3175,7 +3175,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, if (IS_ERR(type)) { if (!(chip->options & NAND_SCAN_SILENT_NODEV)) - printk(KERN_WARNING "No NAND device found.\n"); + pr_warn("No NAND device found.\n"); chip->select_chip(mtd, -1); return PTR_ERR(type); } @@ -3193,7 +3193,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, break; } if (i > 1) - printk(KERN_INFO "%d NAND chips detected\n", i); + pr_info("%d NAND chips detected\n", i); /* Store the number of chips and calc total size for mtd */ chip->numchips = i; @@ -3243,7 +3243,7 @@ int nand_scan_tail(struct mtd_info *mtd) chip->ecc.layout = &nand_oob_128; break; default: - printk(KERN_WARNING "No oob scheme defined for " + pr_warn("No oob scheme defined for " "oobsize %d\n", mtd->oobsize); BUG(); } @@ -3262,7 +3262,7 @@ int nand_scan_tail(struct mtd_info *mtd) /* Similar to NAND_ECC_HW, but a separate read_page handle */ if (!chip->ecc.calculate || !chip->ecc.correct || !chip->ecc.hwctl) { - printk(KERN_WARNING "No ECC functions supplied; " + pr_warn("No ECC functions supplied; " "Hardware ECC not possible\n"); BUG(); } @@ -3291,7 +3291,7 @@ int nand_scan_tail(struct mtd_info *mtd) chip->ecc.read_page == nand_read_page_hwecc || !chip->ecc.write_page || chip->ecc.write_page == nand_write_page_hwecc)) { - printk(KERN_WARNING "No ECC functions supplied; " + pr_warn("No ECC functions supplied; " "Hardware ECC not possible\n"); BUG(); } @@ -3311,7 +3311,7 @@ int nand_scan_tail(struct mtd_info *mtd) if (mtd->writesize >= chip->ecc.size) break; - printk(KERN_WARNING "%d byte HW ECC not possible on " + pr_warn("%d byte HW ECC not possible on " "%d byte page size, fallback to SW ECC\n", chip->ecc.size, mtd->writesize); chip->ecc.mode = NAND_ECC_SOFT; @@ -3333,7 +3333,7 @@ int nand_scan_tail(struct mtd_info *mtd) case NAND_ECC_SOFT_BCH: if (!mtd_nand_has_bch()) { - printk(KERN_WARNING "CONFIG_MTD_ECC_BCH not enabled\n"); + pr_warn("CONFIG_MTD_ECC_BCH not enabled\n"); BUG(); } chip->ecc.calculate = nand_bch_calculate_ecc; @@ -3360,13 +3360,13 @@ int nand_scan_tail(struct mtd_info *mtd) chip->ecc.bytes, &chip->ecc.layout); if (!chip->ecc.priv) { - printk(KERN_WARNING "BCH ECC initialization failed!\n"); + pr_warn("BCH ECC initialization failed!\n"); BUG(); } break; case NAND_ECC_NONE: - printk(KERN_WARNING "NAND_ECC_NONE selected by board driver. " + pr_warn("NAND_ECC_NONE selected by board driver. " "This is not recommended !!\n"); chip->ecc.read_page = nand_read_page_raw; chip->ecc.write_page = nand_write_page_raw; @@ -3379,7 +3379,7 @@ int nand_scan_tail(struct mtd_info *mtd) break; default: - printk(KERN_WARNING "Invalid NAND_ECC_MODE %d\n", + pr_warn("Invalid NAND_ECC_MODE %d\n", chip->ecc.mode); BUG(); } @@ -3401,7 +3401,7 @@ int nand_scan_tail(struct mtd_info *mtd) */ chip->ecc.steps = mtd->writesize / chip->ecc.size; if (chip->ecc.steps * chip->ecc.size != mtd->writesize) { - printk(KERN_WARNING "Invalid ECC parameters\n"); + pr_warn("Invalid ECC parameters\n"); BUG(); } chip->ecc.total = chip->ecc.steps * chip->ecc.bytes; @@ -3492,7 +3492,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips) /* Many callers got this wrong, so check for it for a while... */ if (!mtd->owner && caller_is_module()) { - printk(KERN_CRIT "%s called with NULL mtd->owner!\n", + pr_crit("%s called with NULL mtd->owner!\n", __func__); BUG(); } diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 0d2eaa72..76f496d 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -205,10 +205,10 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, res = mtd->read(mtd, from, len, &retlen, buf); if (res < 0) { if (retlen != len) { - printk(KERN_INFO "nand_bbt: Error reading bad block table\n"); + pr_info("nand_bbt: Error reading bad block table\n"); return res; } - printk(KERN_WARNING "nand_bbt: ECC error while reading bad block table\n"); + pr_warn("nand_bbt: ECC error while reading bad block table\n"); } /* Analyse data */ @@ -219,7 +219,7 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, if (tmp == msk) continue; if (reserved_block_code && (tmp == reserved_block_code)) { - printk(KERN_INFO "nand_read_bbt: Reserved block at 0x%012llx\n", + pr_info("nand_read_bbt: Reserved block at 0x%012llx\n", (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06); mtd->ecc_stats.bbtblocks++; @@ -229,7 +229,7 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, * Leave it for now, if it's matured we can * move this message to pr_debug. */ - printk(KERN_INFO "nand_read_bbt: Bad block at 0x%012llx\n", + pr_info("nand_read_bbt: Bad block at 0x%012llx\n", (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); /* Factory marked bad or worn out? */ if (tmp == 0) @@ -389,7 +389,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, scan_read_raw(mtd, buf, (loff_t)td->pages[0] << this->page_shift, mtd->writesize, td); td->version[0] = buf[bbt_get_ver_offs(mtd, td)]; - printk(KERN_INFO "Bad block table at page %d, version 0x%02X\n", + pr_info("Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]); } @@ -398,7 +398,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, scan_read_raw(mtd, buf, (loff_t)md->pages[0] << this->page_shift, mtd->writesize, td); md->version[0] = buf[bbt_get_ver_offs(mtd, md)]; - printk(KERN_INFO "Bad block table at page %d, version 0x%02X\n", + pr_info("Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]); } return 1; @@ -473,7 +473,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, loff_t from; size_t readlen; - printk(KERN_INFO "Scanning device for bad blocks\n"); + pr_info("Scanning device for bad blocks\n"); if (bd->options & NAND_BBT_SCANALLPAGES) len = 1 << (this->bbt_erase_shift - this->page_shift); @@ -502,7 +502,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, from = 0; } else { if (chip >= this->numchips) { - printk(KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n", + pr_warn("create_bbt(): chipnr (%d) > available chips (%d)\n", chip + 1, this->numchips); return -EINVAL; } @@ -531,7 +531,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, if (ret) { this->bbt[i >> 3] |= 0x03 << (i & 0x6); - printk(KERN_WARNING "Bad eraseblock %d at 0x%012llx\n", + pr_warn("Bad eraseblock %d at 0x%012llx\n", i >> 1, (unsigned long long)from); mtd->ecc_stats.badblocks++; } @@ -614,9 +614,9 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr /* Check, if we found a bbt for each requested chip */ for (i = 0; i < chips; i++) { if (td->pages[i] == -1) - printk(KERN_WARNING "Bad block table not found for chip %d\n", i); + pr_warn("Bad block table not found for chip %d\n", i); else - printk(KERN_INFO "Bad block table found at page %d, version 0x%02X\n", td->pages[i], + pr_info("Bad block table found at page %d, version 0x%02X\n", td->pages[i], td->version[i]); } return 0; @@ -730,7 +730,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (!md || md->pages[chip] != page) goto write; } - printk(KERN_ERR "No space left to write bad block table\n"); + pr_err("No space left to write bad block table\n"); return -ENOSPC; write: @@ -765,12 +765,12 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, res = mtd->read(mtd, to, len, &retlen, buf); if (res < 0) { if (retlen != len) { - printk(KERN_INFO "nand_bbt: Error " + pr_info("nand_bbt: Error " "reading block for writing " "the bad block table\n"); return res; } - printk(KERN_WARNING "nand_bbt: ECC error " + pr_warn("nand_bbt: ECC error " "while reading block for writing " "bad block table\n"); } @@ -847,7 +847,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (res < 0) goto outerr; - printk(KERN_INFO "Bad block table written to 0x%012llx, version " + pr_info("Bad block table written to 0x%012llx, version " "0x%02X\n", (unsigned long long)to, td->version[chip]); /* Mark it as used */ @@ -1137,7 +1137,7 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) */ if (!td) { if ((res = nand_memory_bbt(mtd, bd))) { - printk(KERN_ERR "nand_bbt: Can't scan flash and build the RAM-based BBT\n"); + pr_err("nand_bbt: Can't scan flash and build the RAM-based BBT\n"); kfree(this->bbt); this->bbt = NULL; } @@ -1305,7 +1305,7 @@ static int nand_create_default_bbt_descr(struct nand_chip *this) { struct nand_bbt_descr *bd; if (this->badblock_pattern) { - printk(KERN_WARNING "BBT descr already allocated; not replacing.\n"); + pr_warn("BBT descr already allocated; not replacing.\n"); return -EINVAL; } bd = kzalloc(sizeof(*bd), GFP_KERNEL); -- cgit v0.10.2 From d037021953922ebdbc34b98b8c4648017b1c6e89 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:08 -0700 Subject: mtd: nand: style fixups in pr_* messages This is a cleanup of some punctuation, indentation, and capitalization on the lines affected affected by the last patch. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 1d6c81a..6a52712 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2179,8 +2179,8 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, /* Reject writes, which are not page aligned */ if (NOTALIGNED(to) || NOTALIGNED(ops->len)) { - pr_notice("%s: Attempt to write not " - "page aligned data\n", __func__); + pr_notice("%s: attempt to write non page aligned data\n", + __func__); return -EINVAL; } @@ -2570,8 +2570,8 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, /* Heck if we have a bad block, we do not erase bad blocks! */ if (nand_block_checkbad(mtd, ((loff_t) page) << chip->page_shift, 0, allowbbt)) { - pr_warn("%s: attempt to erase a bad block " - "at page 0x%08x\n", __func__, page); + pr_warn("%s: attempt to erase a bad block at page 0x%08x\n", + __func__, page); instr->state = MTD_ERASE_FAILED; goto erase_exit; } @@ -2744,8 +2744,8 @@ static void nand_resume(struct mtd_info *mtd) if (chip->state == FL_PM_SUSPENDED) nand_release_device(mtd); else - pr_err("%s called for a chip which is not " - "in suspended state\n", __func__); + pr_err("%s called for a chip which is not in suspended state\n", + __func__); } /* Set default functions */ @@ -2866,8 +2866,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, chip->onfi_version = 0; if (!chip->onfi_version) { - pr_info("%s: unsupported ONFI version: %d\n", - __func__, val); + pr_info("%s: unsupported ONFI version: %d\n", __func__, val); return 0; } @@ -2933,8 +2932,8 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, if (id_data[0] != *maf_id || id_data[1] != *dev_id) { pr_info("%s: second ID read did not match " - "%02x,%02x against %02x,%02x\n", __func__, - *maf_id, *dev_id, id_data[0], id_data[1]); + "%02x,%02x against %02x,%02x\n", __func__, + *maf_id, *dev_id, id_data[0], id_data[1]); return ERR_PTR(-ENODEV); } @@ -3078,11 +3077,11 @@ ident_done: */ if (busw != (chip->options & NAND_BUSWIDTH_16)) { pr_info("NAND device: Manufacturer ID:" - " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, - *dev_id, nand_manuf_ids[maf_idx].name, mtd->name); + " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, + *dev_id, nand_manuf_ids[maf_idx].name, mtd->name); pr_warn("NAND bus width %d instead %d bit\n", - (chip->options & NAND_BUSWIDTH_16) ? 16 : 8, - busw ? 16 : 8); + (chip->options & NAND_BUSWIDTH_16) ? 16 : 8, + busw ? 16 : 8); return ERR_PTR(-EINVAL); } @@ -3175,7 +3174,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, if (IS_ERR(type)) { if (!(chip->options & NAND_SCAN_SILENT_NODEV)) - pr_warn("No NAND device found.\n"); + pr_warn("No NAND device found\n"); chip->select_chip(mtd, -1); return PTR_ERR(type); } @@ -3243,8 +3242,8 @@ int nand_scan_tail(struct mtd_info *mtd) chip->ecc.layout = &nand_oob_128; break; default: - pr_warn("No oob scheme defined for " - "oobsize %d\n", mtd->oobsize); + pr_warn("No oob scheme defined for oobsize %d\n", + mtd->oobsize); BUG(); } } @@ -3263,7 +3262,7 @@ int nand_scan_tail(struct mtd_info *mtd) if (!chip->ecc.calculate || !chip->ecc.correct || !chip->ecc.hwctl) { pr_warn("No ECC functions supplied; " - "Hardware ECC not possible\n"); + "hardware ECC not possible\n"); BUG(); } if (!chip->ecc.read_page) @@ -3292,7 +3291,7 @@ int nand_scan_tail(struct mtd_info *mtd) !chip->ecc.write_page || chip->ecc.write_page == nand_write_page_hwecc)) { pr_warn("No ECC functions supplied; " - "Hardware ECC not possible\n"); + "hardware ECC not possible\n"); BUG(); } /* Use standard syndrome read/write page function? */ @@ -3312,8 +3311,8 @@ int nand_scan_tail(struct mtd_info *mtd) if (mtd->writesize >= chip->ecc.size) break; pr_warn("%d byte HW ECC not possible on " - "%d byte page size, fallback to SW ECC\n", - chip->ecc.size, mtd->writesize); + "%d byte page size, fallback to SW ECC\n", + chip->ecc.size, mtd->writesize); chip->ecc.mode = NAND_ECC_SOFT; case NAND_ECC_SOFT: @@ -3367,7 +3366,7 @@ int nand_scan_tail(struct mtd_info *mtd) case NAND_ECC_NONE: pr_warn("NAND_ECC_NONE selected by board driver. " - "This is not recommended !!\n"); + "This is not recommended!\n"); chip->ecc.read_page = nand_read_page_raw; chip->ecc.write_page = nand_write_page_raw; chip->ecc.read_oob = nand_read_oob_std; @@ -3379,8 +3378,7 @@ int nand_scan_tail(struct mtd_info *mtd) break; default: - pr_warn("Invalid NAND_ECC_MODE %d\n", - chip->ecc.mode); + pr_warn("Invalid NAND_ECC_MODE %d\n", chip->ecc.mode); BUG(); } @@ -3492,8 +3490,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips) /* Many callers got this wrong, so check for it for a while... */ if (!mtd->owner && caller_is_module()) { - pr_crit("%s called with NULL mtd->owner!\n", - __func__); + pr_crit("%s called with NULL mtd->owner!\n", __func__); BUG(); } diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 76f496d..dba3323 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -205,7 +205,7 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, res = mtd->read(mtd, from, len, &retlen, buf); if (res < 0) { if (retlen != len) { - pr_info("nand_bbt: Error reading bad block table\n"); + pr_info("nand_bbt: error reading bad block table\n"); return res; } pr_warn("nand_bbt: ECC error while reading bad block table\n"); @@ -219,8 +219,8 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, if (tmp == msk) continue; if (reserved_block_code && (tmp == reserved_block_code)) { - pr_info("nand_read_bbt: Reserved block at 0x%012llx\n", - (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); + pr_info("nand_read_bbt: reserved block at 0x%012llx\n", + (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06); mtd->ecc_stats.bbtblocks++; continue; @@ -229,8 +229,8 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, * Leave it for now, if it's matured we can * move this message to pr_debug. */ - pr_info("nand_read_bbt: Bad block at 0x%012llx\n", - (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); + pr_info("nand_read_bbt: bad block at 0x%012llx\n", + (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift); /* Factory marked bad or worn out? */ if (tmp == 0) this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06); @@ -390,7 +390,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, mtd->writesize, td); td->version[0] = buf[bbt_get_ver_offs(mtd, td)]; pr_info("Bad block table at page %d, version 0x%02X\n", - td->pages[0], td->version[0]); + td->pages[0], td->version[0]); } /* Read the mirror version, if available */ @@ -399,7 +399,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf, mtd->writesize, td); md->version[0] = buf[bbt_get_ver_offs(mtd, md)]; pr_info("Bad block table at page %d, version 0x%02X\n", - md->pages[0], md->version[0]); + md->pages[0], md->version[0]); } return 1; } @@ -532,7 +532,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, if (ret) { this->bbt[i >> 3] |= 0x03 << (i & 0x6); pr_warn("Bad eraseblock %d at 0x%012llx\n", - i >> 1, (unsigned long long)from); + i >> 1, (unsigned long long)from); mtd->ecc_stats.badblocks++; } @@ -616,8 +616,8 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr if (td->pages[i] == -1) pr_warn("Bad block table not found for chip %d\n", i); else - pr_info("Bad block table found at page %d, version 0x%02X\n", td->pages[i], - td->version[i]); + pr_info("Bad block table found at page %d, version " + "0x%02X\n", td->pages[i], td->version[i]); } return 0; } @@ -765,14 +765,12 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, res = mtd->read(mtd, to, len, &retlen, buf); if (res < 0) { if (retlen != len) { - pr_info("nand_bbt: Error " - "reading block for writing " - "the bad block table\n"); + pr_info("nand_bbt: error reading block " + "for writing the bad block table\n"); return res; } - pr_warn("nand_bbt: ECC error " - "while reading block for writing " - "bad block table\n"); + pr_warn("nand_bbt: ECC error while reading " + "block for writing bad block table\n"); } /* Read oob data */ ops.ooblen = (len >> this->page_shift) * mtd->oobsize; @@ -847,8 +845,8 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (res < 0) goto outerr; - pr_info("Bad block table written to 0x%012llx, version " - "0x%02X\n", (unsigned long long)to, td->version[chip]); + pr_info("Bad block table written to 0x%012llx, version 0x%02X\n", + (unsigned long long)to, td->version[chip]); /* Mark it as used */ td->pages[chip] = page; @@ -856,8 +854,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, return 0; outerr: - printk(KERN_WARNING - "nand_bbt: Error while writing bad block table %d\n", res); + pr_warn("nand_bbt: error while writing bad block table %d\n", res); return res; } @@ -1137,7 +1134,7 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) */ if (!td) { if ((res = nand_memory_bbt(mtd, bd))) { - pr_err("nand_bbt: Can't scan flash and build the RAM-based BBT\n"); + pr_err("nand_bbt: can't scan flash and build the RAM-based BBT\n"); kfree(this->bbt); this->bbt = NULL; } @@ -1305,7 +1302,7 @@ static int nand_create_default_bbt_descr(struct nand_chip *this) { struct nand_bbt_descr *bd; if (this->badblock_pattern) { - pr_warn("BBT descr already allocated; not replacing.\n"); + pr_warn("BBT descr already allocated; not replacing\n"); return -EINVAL; } bd = kzalloc(sizeof(*bd), GFP_KERNEL); -- cgit v0.10.2 From 289c05222172b51401dbbb017115655f241d94ab Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:09 -0700 Subject: mtd: replace DEBUG() with pr_debug() Start moving away from the MTD_DEBUG_LEVEL messages. The dynamic debugging feature is a generic kernel feature that provides more flexibility. (See Documentation/dynamic-debug-howto.txt) Also fix some punctuation, indentation, and capitalization that went along with the affected lines. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 23175ed..2302cc0 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -145,8 +145,7 @@ static void fixup_amd_bootblock(struct mtd_info *mtd) if (((major << 8) | minor) < 0x3131) { /* CFI version 1.0 => don't trust bootloc */ - DEBUG(MTD_DEBUG_LEVEL1, - "%s: JEDEC Vendor ID is 0x%02X Device ID is 0x%02X\n", + pr_debug("%s: JEDEC Vendor ID is 0x%02X Device ID is 0x%02X\n", map->name, cfi->mfr, cfi->id); /* AFAICS all 29LV400 with a bottom boot block have a device ID @@ -166,8 +165,7 @@ static void fixup_amd_bootblock(struct mtd_info *mtd) * the 8-bit device ID. */ (cfi->mfr == CFI_MFR_MACRONIX)) { - DEBUG(MTD_DEBUG_LEVEL1, - "%s: Macronix MX29LV400C with bottom boot block" + pr_debug("%s: Macronix MX29LV400C with bottom boot block" " detected\n", map->name); extp->TopBottom = 2; /* bottom boot */ } else @@ -178,8 +176,7 @@ static void fixup_amd_bootblock(struct mtd_info *mtd) extp->TopBottom = 2; /* bottom boot */ } - DEBUG(MTD_DEBUG_LEVEL1, - "%s: AMD CFI PRI V%c.%c has no boot block field;" + pr_debug("%s: AMD CFI PRI V%c.%c has no boot block field;" " deduced %s from Device ID\n", map->name, major, minor, extp->TopBottom == 2 ? "bottom" : "top"); } @@ -191,7 +188,7 @@ static void fixup_use_write_buffers(struct mtd_info *mtd) struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; if (cfi->cfiq->BufWriteTimeoutTyp) { - DEBUG(MTD_DEBUG_LEVEL1, "Using buffer write method\n" ); + pr_debug("Using buffer write method\n" ); mtd->write = cfi_amdstd_write_buffers; } } @@ -443,7 +440,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) mtd->writesize = 1; mtd->writebufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize; - DEBUG(MTD_DEBUG_LEVEL3, "MTD %s(): write buffer size %d\n", + pr_debug("MTD %s(): write buffer size %d\n", __func__, mtd->writebufsize); mtd->reboot_notifier.notifier_call = cfi_amdstd_reboot; @@ -1163,7 +1160,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, return ret; } - DEBUG( MTD_DEBUG_LEVEL3, "MTD %s(): WRITE 0x%.8lx(0x%.8lx)\n", + pr_debug("MTD %s(): WRITE 0x%.8lx(0x%.8lx)\n", __func__, adr, datum.x[0] ); /* @@ -1174,7 +1171,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip, */ oldd = map_read(map, adr); if (map_word_equal(map, oldd, datum)) { - DEBUG( MTD_DEBUG_LEVEL3, "MTD %s(): NOP\n", + pr_debug("MTD %s(): NOP\n", __func__); goto op_done; } @@ -1400,7 +1397,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip, datum = map_word_load(map, buf); - DEBUG( MTD_DEBUG_LEVEL3, "MTD %s(): WRITE 0x%.8lx(0x%.8lx)\n", + pr_debug("MTD %s(): WRITE 0x%.8lx(0x%.8lx)\n", __func__, adr, datum.x[0] ); XIP_INVAL_CACHED_RANGE(map, adr, len); @@ -1587,7 +1584,7 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip *chip) return ret; } - DEBUG( MTD_DEBUG_LEVEL3, "MTD %s(): ERASE 0x%.8lx\n", + pr_debug("MTD %s(): ERASE 0x%.8lx\n", __func__, chip->start ); XIP_INVAL_CACHED_RANGE(map, adr, map->size); @@ -1675,7 +1672,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, return ret; } - DEBUG( MTD_DEBUG_LEVEL3, "MTD %s(): ERASE 0x%.8lx\n", + pr_debug("MTD %s(): ERASE 0x%.8lx\n", __func__, adr ); XIP_INVAL_CACHED_RANGE(map, adr, len); @@ -1801,7 +1798,7 @@ static int do_atmel_lock(struct map_info *map, struct flchip *chip, goto out_unlock; chip->state = FL_LOCKING; - DEBUG(MTD_DEBUG_LEVEL3, "MTD %s(): LOCK 0x%08lx len %d\n", + pr_debug("MTD %s(): LOCK 0x%08lx len %d\n", __func__, adr, len); cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, @@ -1837,7 +1834,7 @@ static int do_atmel_unlock(struct map_info *map, struct flchip *chip, goto out_unlock; chip->state = FL_UNLOCKING; - DEBUG(MTD_DEBUG_LEVEL3, "MTD %s(): LOCK 0x%08lx len %d\n", + pr_debug("MTD %s(): LOCK 0x%08lx len %d\n", __func__, adr, len); cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, diff --git a/drivers/mtd/chips/fwh_lock.h b/drivers/mtd/chips/fwh_lock.h index 5e3cc80..89c6595 100644 --- a/drivers/mtd/chips/fwh_lock.h +++ b/drivers/mtd/chips/fwh_lock.h @@ -34,8 +34,7 @@ static int fwh_xxlock_oneblock(struct map_info *map, struct flchip *chip, /* Refuse the operation if the we cannot look behind the chip */ if (chip->start < 0x400000) { - DEBUG( MTD_DEBUG_LEVEL3, - "MTD %s(): chip->start: %lx wanted >= 0x400000\n", + pr_debug( "MTD %s(): chip->start: %lx wanted >= 0x400000\n", __func__, chip->start ); return -EIO; } diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c index d40c410..c443f52 100644 --- a/drivers/mtd/chips/jedec_probe.c +++ b/drivers/mtd/chips/jedec_probe.c @@ -1917,8 +1917,7 @@ static void jedec_reset(u32 base, struct map_info *map, struct cfi_private *cfi) * as they will ignore the writes and don't care what address * the F0 is written to */ if (cfi->addr_unlock1) { - DEBUG( MTD_DEBUG_LEVEL3, - "reset unlock called %x %x \n", + pr_debug( "reset unlock called %x %x \n", cfi->addr_unlock1,cfi->addr_unlock2); cfi_send_gen_cmd(0xaa, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x55, cfi->addr_unlock2, base, map, cfi, cfi->device_type, NULL); @@ -1941,7 +1940,7 @@ static int cfi_jedec_setup(struct map_info *map, struct cfi_private *cfi, int in uint8_t uaddr; if (!(jedec_table[index].devtypes & cfi->device_type)) { - DEBUG(MTD_DEBUG_LEVEL1, "Rejecting potential %s with incompatible %d-bit device type\n", + pr_debug("Rejecting potential %s with incompatible %d-bit device type\n", jedec_table[index].name, 4 * (1<device_type)); return 0; } @@ -2021,7 +2020,7 @@ static inline int jedec_match( uint32_t base, * there aren't. */ if (finfo->dev_id > 0xff) { - DEBUG( MTD_DEBUG_LEVEL3, "%s(): ID is not 8bit\n", + pr_debug("%s(): ID is not 8bit\n", __func__); goto match_done; } @@ -2045,12 +2044,10 @@ static inline int jedec_match( uint32_t base, } /* the part size must fit in the memory window */ - DEBUG( MTD_DEBUG_LEVEL3, - "MTD %s(): Check fit 0x%.8x + 0x%.8x = 0x%.8x\n", + pr_debug("MTD %s(): Check fit 0x%.8x + 0x%.8x = 0x%.8x\n", __func__, base, 1 << finfo->dev_size, base + (1 << finfo->dev_size) ); if ( base + cfi_interleave(cfi) * ( 1 << finfo->dev_size ) > map->size ) { - DEBUG( MTD_DEBUG_LEVEL3, - "MTD %s(): 0x%.4x 0x%.4x %dKiB doesn't fit\n", + pr_debug("MTD %s(): 0x%.4x 0x%.4x %dKiB doesn't fit\n", __func__, finfo->mfr_id, finfo->dev_id, 1 << finfo->dev_size ); goto match_done; @@ -2061,13 +2058,12 @@ static inline int jedec_match( uint32_t base, uaddr = finfo->uaddr; - DEBUG( MTD_DEBUG_LEVEL3, "MTD %s(): check unlock addrs 0x%.4x 0x%.4x\n", + pr_debug("MTD %s(): check unlock addrs 0x%.4x 0x%.4x\n", __func__, cfi->addr_unlock1, cfi->addr_unlock2 ); if ( MTD_UADDR_UNNECESSARY != uaddr && MTD_UADDR_DONT_CARE != uaddr && ( unlock_addrs[uaddr].addr1 / cfi->device_type != cfi->addr_unlock1 || unlock_addrs[uaddr].addr2 / cfi->device_type != cfi->addr_unlock2 ) ) { - DEBUG( MTD_DEBUG_LEVEL3, - "MTD %s(): 0x%.4x 0x%.4x did not match\n", + pr_debug("MTD %s(): 0x%.4x 0x%.4x did not match\n", __func__, unlock_addrs[uaddr].addr1, unlock_addrs[uaddr].addr2); @@ -2083,15 +2079,13 @@ static inline int jedec_match( uint32_t base, * FIXME - write a driver that takes all of the chip info as * module parameters, doesn't probe but forces a load. */ - DEBUG( MTD_DEBUG_LEVEL3, - "MTD %s(): check ID's disappear when not in ID mode\n", + pr_debug("MTD %s(): check ID's disappear when not in ID mode\n", __func__ ); jedec_reset( base, map, cfi ); mfr = jedec_read_mfr( map, base, cfi ); id = jedec_read_id( map, base, cfi ); if ( mfr == cfi->mfr && id == cfi->id ) { - DEBUG( MTD_DEBUG_LEVEL3, - "MTD %s(): ID 0x%.2x:0x%.2x did not change after reset:\n" + pr_debug("MTD %s(): ID 0x%.2x:0x%.2x did not change after reset:\n" "You might need to manually specify JEDEC parameters.\n", __func__, cfi->mfr, cfi->id ); goto match_done; @@ -2104,7 +2098,7 @@ static inline int jedec_match( uint32_t base, * Put the device back in ID mode - only need to do this if we * were truly frobbing a real device. */ - DEBUG( MTD_DEBUG_LEVEL3, "MTD %s(): return to ID mode\n", __func__ ); + pr_debug("MTD %s(): return to ID mode\n", __func__ ); if (cfi->addr_unlock1) { cfi_send_gen_cmd(0xaa, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0x55, cfi->addr_unlock2, base, map, cfi, cfi->device_type, NULL); @@ -2167,13 +2161,11 @@ static int jedec_probe_chip(struct map_info *map, __u32 base, cfi->mfr = jedec_read_mfr(map, base, cfi); cfi->id = jedec_read_id(map, base, cfi); - DEBUG(MTD_DEBUG_LEVEL3, - "Search for id:(%02x %02x) interleave(%d) type(%d)\n", + pr_debug("Search for id:(%02x %02x) interleave(%d) type(%d)\n", cfi->mfr, cfi->id, cfi_interleave(cfi), cfi->device_type); for (i = 0; i < ARRAY_SIZE(jedec_table); i++) { if ( jedec_match( base, map, cfi, &jedec_table[i] ) ) { - DEBUG( MTD_DEBUG_LEVEL3, - "MTD %s(): matched device 0x%x,0x%x unlock_addrs: 0x%.4x 0x%.4x\n", + pr_debug("MTD %s(): matched device 0x%x,0x%x unlock_addrs: 0x%.4x 0x%.4x\n", __func__, cfi->mfr, cfi->id, cfi->addr_unlock1, cfi->addr_unlock2 ); if (!cfi_jedec_setup(map, cfi, i)) diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c index ed15447..8c97033 100644 --- a/drivers/mtd/devices/doc2000.c +++ b/drivers/mtd/devices/doc2000.c @@ -82,8 +82,7 @@ static int _DoC_WaitReady(struct DiskOnChip *doc) void __iomem *docptr = doc->virtadr; unsigned long timeo = jiffies + (HZ * 10); - DEBUG(MTD_DEBUG_LEVEL3, - "_DoC_WaitReady called for out-of-line wait\n"); + pr_debug("_DoC_WaitReady called for out-of-line wait\n"); /* Out-of-line routine to wait for chip response */ while (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) { @@ -92,7 +91,7 @@ static int _DoC_WaitReady(struct DiskOnChip *doc) DoC_Delay(doc, 2); if (time_after(jiffies, timeo)) { - DEBUG(MTD_DEBUG_LEVEL2, "_DoC_WaitReady timed out.\n"); + pr_debug("_DoC_WaitReady timed out.\n"); return -EIO; } udelay(1); @@ -323,8 +322,7 @@ static int DoC_IdentChip(struct DiskOnChip *doc, int floor, int chip) /* Reset the chip */ if (DoC_Command(doc, NAND_CMD_RESET, CDSN_CTRL_WP)) { - DEBUG(MTD_DEBUG_LEVEL2, - "DoC_Command (reset) for %d,%d returned true\n", + pr_debug("DoC_Command (reset) for %d,%d returned true\n", floor, chip); return 0; } @@ -332,8 +330,7 @@ static int DoC_IdentChip(struct DiskOnChip *doc, int floor, int chip) /* Read the NAND chip ID: 1. Send ReadID command */ if (DoC_Command(doc, NAND_CMD_READID, CDSN_CTRL_WP)) { - DEBUG(MTD_DEBUG_LEVEL2, - "DoC_Command (ReadID) for %d,%d returned true\n", + pr_debug("DoC_Command (ReadID) for %d,%d returned true\n", floor, chip); return 0; } diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c index c6ea860..3d2b459 100644 --- a/drivers/mtd/devices/doc2001.c +++ b/drivers/mtd/devices/doc2001.c @@ -55,15 +55,14 @@ static int _DoC_WaitReady(void __iomem * docptr) { unsigned short c = 0xffff; - DEBUG(MTD_DEBUG_LEVEL3, - "_DoC_WaitReady called for out-of-line wait\n"); + pr_debug("_DoC_WaitReady called for out-of-line wait\n"); /* Out-of-line routine to wait for chip response */ while (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B) && --c) ; if (c == 0) - DEBUG(MTD_DEBUG_LEVEL2, "_DoC_WaitReady timed out.\n"); + pr_debug("_DoC_WaitReady timed out.\n"); return (c == 0); } diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c index fe82fbf..d28c9d9 100644 --- a/drivers/mtd/devices/doc2001plus.c +++ b/drivers/mtd/devices/doc2001plus.c @@ -61,15 +61,14 @@ static int _DoC_WaitReady(void __iomem * docptr) { unsigned int c = 0xffff; - DEBUG(MTD_DEBUG_LEVEL3, - "_DoC_WaitReady called for out-of-line wait\n"); + pr_debug("_DoC_WaitReady called for out-of-line wait\n"); /* Out-of-line routine to wait for chip response */ while (((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) && --c) ; if (c == 0) - DEBUG(MTD_DEBUG_LEVEL2, "_DoC_WaitReady timed out.\n"); + pr_debug("_DoC_WaitReady timed out.\n"); return (c == 0); } diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 66a3555..6417bd6 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -208,7 +208,7 @@ static int wait_till_ready(struct m25p *flash) */ static int erase_chip(struct m25p *flash) { - DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %lldKiB\n", + pr_debug("%s: %s %lldKiB\n", dev_name(&flash->spi->dev), __func__, (long long)(flash->mtd.size >> 10)); @@ -249,7 +249,7 @@ static int m25p_cmdsz(struct m25p *flash) */ static int erase_sector(struct m25p *flash, u32 offset) { - DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %dKiB at 0x%08x\n", + pr_debug("%s: %s %dKiB at 0x%08x\n", dev_name(&flash->spi->dev), __func__, flash->mtd.erasesize / 1024, offset); @@ -285,7 +285,7 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr) u32 addr,len; uint32_t rem; - DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%llx, len %lld\n", + pr_debug("%s: %s %s 0x%llx, len %lld\n", dev_name(&flash->spi->dev), __func__, "at", (long long)instr->addr, (long long)instr->len); @@ -347,7 +347,7 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len, struct spi_transfer t[2]; struct spi_message m; - DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %zd\n", + pr_debug("%s: %s %s 0x%08x, len %zd\n", dev_name(&flash->spi->dev), __func__, "from", (u32)from, len); @@ -416,7 +416,7 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len, struct spi_transfer t[2]; struct spi_message m; - DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %zd\n", + pr_debug("%s: %s %s 0x%08x, len %zd\n", dev_name(&flash->spi->dev), __func__, "to", (u32)to, len); @@ -509,7 +509,7 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, size_t actual; int cmd_sz, ret; - DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %zd\n", + pr_debug("%s: %s %s 0x%08x, len %zd\n", dev_name(&flash->spi->dev), __func__, "to", (u32)to, len); @@ -787,7 +787,7 @@ static const struct spi_device_id *__devinit jedec_probe(struct spi_device *spi) */ tmp = spi_write_then_read(spi, &code, 1, id, 5); if (tmp < 0) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: error %d reading JEDEC ID\n", + pr_debug("%s: error %d reading JEDEC ID\n", dev_name(&spi->dev), tmp); return ERR_PTR(tmp); } @@ -944,8 +944,7 @@ static int __devinit m25p_probe(struct spi_device *spi) dev_info(&spi->dev, "%s (%lld Kbytes)\n", id->name, (long long)flash->mtd.size >> 10); - DEBUG(MTD_DEBUG_LEVEL2, - "mtd .name = %s, .size = 0x%llx (%lldMiB) " + pr_debug("mtd .name = %s, .size = 0x%llx (%lldMiB) " ".erasesize = 0x%.8x (%uKiB) .numeraseregions = %d\n", flash->mtd.name, (long long)flash->mtd.size, (long long)(flash->mtd.size >> 20), @@ -954,8 +953,7 @@ static int __devinit m25p_probe(struct spi_device *spi) if (flash->mtd.numeraseregions) for (i = 0; i < flash->mtd.numeraseregions; i++) - DEBUG(MTD_DEBUG_LEVEL2, - "mtd.eraseregions[%d] = { .offset = 0x%llx, " + pr_debug("mtd.eraseregions[%d] = { .offset = 0x%llx, " ".erasesize = 0x%.8x (%uKiB), " ".numblocks = %d }\n", i, (long long)flash->mtd.eraseregions[i].offset, diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index c86fa57..f409aef 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -133,7 +133,7 @@ static int dataflash_waitready(struct spi_device *spi) for (;;) { status = dataflash_status(spi); if (status < 0) { - DEBUG(MTD_DEBUG_LEVEL1, "%s: status %d?\n", + pr_debug("%s: status %d?\n", dev_name(&spi->dev), status); status = 0; } @@ -160,7 +160,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr) uint8_t *command; uint32_t rem; - DEBUG(MTD_DEBUG_LEVEL2, "%s: erase addr=0x%llx len 0x%llx\n", + pr_debug("%s: erase addr=0x%llx len 0x%llx\n", dev_name(&spi->dev), (long long)instr->addr, (long long)instr->len); @@ -198,7 +198,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr) command[2] = (uint8_t)(pageaddr >> 8); command[3] = 0; - DEBUG(MTD_DEBUG_LEVEL3, "ERASE %s: (%x) %x %x %x [%i]\n", + pr_debug("ERASE %s: (%x) %x %x %x [%i]\n", do_block ? "block" : "page", command[0], command[1], command[2], command[3], pageaddr); @@ -249,7 +249,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len, uint8_t *command; int status; - DEBUG(MTD_DEBUG_LEVEL2, "%s: read 0x%x..0x%x\n", + pr_debug("%s: read 0x%x..0x%x\n", dev_name(&priv->spi->dev), (unsigned)from, (unsigned)(from + len)); *retlen = 0; @@ -266,7 +266,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len, command = priv->command; - DEBUG(MTD_DEBUG_LEVEL3, "READ: (%x) %x %x %x\n", + pr_debug("READ: (%x) %x %x %x\n", command[0], command[1], command[2], command[3]); spi_message_init(&msg); @@ -298,7 +298,7 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len, *retlen = msg.actual_length - 8; status = 0; } else - DEBUG(MTD_DEBUG_LEVEL1, "%s: read %x..%x --> %d\n", + pr_debug("%s: read %x..%x --> %d\n", dev_name(&priv->spi->dev), (unsigned)from, (unsigned)(from + len), status); @@ -325,7 +325,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, int status = -EINVAL; uint8_t *command; - DEBUG(MTD_DEBUG_LEVEL2, "%s: write 0x%x..0x%x\n", + pr_debug("%s: write 0x%x..0x%x\n", dev_name(&spi->dev), (unsigned)to, (unsigned)(to + len)); *retlen = 0; @@ -351,7 +351,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, mutex_lock(&priv->lock); while (remaining > 0) { - DEBUG(MTD_DEBUG_LEVEL3, "write @ %i:%i len=%i\n", + pr_debug("write @ %i:%i len=%i\n", pageaddr, offset, writelen); /* REVISIT: @@ -379,12 +379,12 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, command[2] = (addr & 0x0000FF00) >> 8; command[3] = 0; - DEBUG(MTD_DEBUG_LEVEL3, "TRANSFER: (%x) %x %x %x\n", + pr_debug("TRANSFER: (%x) %x %x %x\n", command[0], command[1], command[2], command[3]); status = spi_sync(spi, &msg); if (status < 0) - DEBUG(MTD_DEBUG_LEVEL1, "%s: xfer %u -> %d \n", + pr_debug("%s: xfer %u -> %d \n", dev_name(&spi->dev), addr, status); (void) dataflash_waitready(priv->spi); @@ -397,7 +397,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, command[2] = (addr & 0x0000FF00) >> 8; command[3] = (addr & 0x000000FF); - DEBUG(MTD_DEBUG_LEVEL3, "PROGRAM: (%x) %x %x %x\n", + pr_debug("PROGRAM: (%x) %x %x %x\n", command[0], command[1], command[2], command[3]); x[1].tx_buf = writebuf; @@ -406,7 +406,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, status = spi_sync(spi, &msg); spi_transfer_del(x + 1); if (status < 0) - DEBUG(MTD_DEBUG_LEVEL1, "%s: pgm %u/%u -> %d \n", + pr_debug("%s: pgm %u/%u -> %d \n", dev_name(&spi->dev), addr, writelen, status); (void) dataflash_waitready(priv->spi); @@ -421,12 +421,12 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, command[2] = (addr & 0x0000FF00) >> 8; command[3] = 0; - DEBUG(MTD_DEBUG_LEVEL3, "COMPARE: (%x) %x %x %x\n", + pr_debug("COMPARE: (%x) %x %x %x\n", command[0], command[1], command[2], command[3]); status = spi_sync(spi, &msg); if (status < 0) - DEBUG(MTD_DEBUG_LEVEL1, "%s: compare %u -> %d \n", + pr_debug("%s: compare %u -> %d \n", dev_name(&spi->dev), addr, status); status = dataflash_waitready(priv->spi); @@ -780,7 +780,7 @@ static struct flash_info *__devinit jedec_probe(struct spi_device *spi) */ tmp = spi_write_then_read(spi, &code, 1, id, 3); if (tmp < 0) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: error %d reading JEDEC ID\n", + pr_debug("%s: error %d reading JEDEC ID\n", dev_name(&spi->dev), tmp); return ERR_PTR(tmp); } @@ -797,7 +797,7 @@ static struct flash_info *__devinit jedec_probe(struct spi_device *spi) tmp < ARRAY_SIZE(dataflash_data); tmp++, info++) { if (info->jedec_id == jedec) { - DEBUG(MTD_DEBUG_LEVEL1, "%s: OTP, sector protect%s\n", + pr_debug("%s: OTP, sector protect%s\n", dev_name(&spi->dev), (info->flags & SUP_POW2PS) ? ", binary pagesize" : "" @@ -805,8 +805,7 @@ static struct flash_info *__devinit jedec_probe(struct spi_device *spi) if (info->flags & SUP_POW2PS) { status = dataflash_status(spi); if (status < 0) { - DEBUG(MTD_DEBUG_LEVEL1, - "%s: status error %d\n", + pr_debug("%s: status error %d\n", dev_name(&spi->dev), status); return ERR_PTR(status); } @@ -871,7 +870,7 @@ static int __devinit dataflash_probe(struct spi_device *spi) */ status = dataflash_status(spi); if (status <= 0 || status == 0xff) { - DEBUG(MTD_DEBUG_LEVEL1, "%s: status error %d\n", + pr_debug("%s: status error %d\n", dev_name(&spi->dev), status); if (status == 0 || status == 0xff) status = -ENODEV; @@ -907,13 +906,13 @@ static int __devinit dataflash_probe(struct spi_device *spi) break; /* obsolete AT45DB1282 not (yet?) supported */ default: - DEBUG(MTD_DEBUG_LEVEL1, "%s: unsupported device (%x)\n", + pr_debug("%s: unsupported device (%x)\n", dev_name(&spi->dev), status & 0x3c); status = -ENODEV; } if (status < 0) - DEBUG(MTD_DEBUG_LEVEL1, "%s: add_dataflash --> %d\n", + pr_debug("%s: add_dataflash --> %d\n", dev_name(&spi->dev), status); return status; @@ -924,7 +923,7 @@ static int __devexit dataflash_remove(struct spi_device *spi) struct dataflash *flash = dev_get_drvdata(&spi->dev); int status; - DEBUG(MTD_DEBUG_LEVEL1, "%s: remove\n", dev_name(&spi->dev)); + pr_debug("%s: remove\n", dev_name(&spi->dev)); status = mtd_device_unregister(&flash->mtd); if (status == 0) { diff --git a/drivers/mtd/devices/sst25l.c b/drivers/mtd/devices/sst25l.c index 44a8b40..d38ef3b 100644 --- a/drivers/mtd/devices/sst25l.c +++ b/drivers/mtd/devices/sst25l.c @@ -410,8 +410,7 @@ static int __devinit sst25l_probe(struct spi_device *spi) dev_info(&spi->dev, "%s (%lld KiB)\n", flash_info->name, (long long)flash->mtd.size >> 10); - DEBUG(MTD_DEBUG_LEVEL2, - "mtd .name = %s, .size = 0x%llx (%lldMiB) " + pr_debug("mtd .name = %s, .size = 0x%llx (%lldMiB) " ".erasesize = 0x%.8x (%uKiB) .numeraseregions = %d\n", flash->mtd.name, (long long)flash->mtd.size, (long long)(flash->mtd.size >> 20), diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c index 037b399..95d7768 100644 --- a/drivers/mtd/ftl.c +++ b/drivers/mtd/ftl.c @@ -339,7 +339,7 @@ static int erase_xfer(partition_t *part, struct erase_info *erase; xfer = &part->XferInfo[xfernum]; - DEBUG(1, "ftl_cs: erasing xfer unit at 0x%x\n", xfer->Offset); + pr_debug("ftl_cs: erasing xfer unit at 0x%x\n", xfer->Offset); xfer->state = XFER_ERASING; /* Is there a free erase slot? Always in MTD. */ @@ -415,7 +415,7 @@ static int prepare_xfer(partition_t *part, int i) xfer = &part->XferInfo[i]; xfer->state = XFER_FAILED; - DEBUG(1, "ftl_cs: preparing xfer unit at 0x%x\n", xfer->Offset); + pr_debug("ftl_cs: preparing xfer unit at 0x%x\n", xfer->Offset); /* Write the transfer unit header */ header = part->header; @@ -476,7 +476,7 @@ static int copy_erase_unit(partition_t *part, uint16_t srcunit, eun = &part->EUNInfo[srcunit]; xfer = &part->XferInfo[xferunit]; - DEBUG(2, "ftl_cs: copying block 0x%x to 0x%x\n", + pr_debug("ftl_cs: copying block 0x%x to 0x%x\n", eun->Offset, xfer->Offset); @@ -609,8 +609,8 @@ static int reclaim_block(partition_t *part) uint32_t best; int queued, ret; - DEBUG(0, "ftl_cs: reclaiming space...\n"); - DEBUG(3, "NumTransferUnits == %x\n", part->header.NumTransferUnits); + pr_debug("ftl_cs: reclaiming space...\n"); + pr_debug("NumTransferUnits == %x\n", part->header.NumTransferUnits); /* Pick the least erased transfer unit */ best = 0xffffffff; xfer = 0xffff; do { @@ -618,22 +618,22 @@ static int reclaim_block(partition_t *part) for (i = 0; i < part->header.NumTransferUnits; i++) { int n=0; if (part->XferInfo[i].state == XFER_UNKNOWN) { - DEBUG(3,"XferInfo[%d].state == XFER_UNKNOWN\n",i); + pr_debug("XferInfo[%d].state == XFER_UNKNOWN\n",i); n=1; erase_xfer(part, i); } if (part->XferInfo[i].state == XFER_ERASING) { - DEBUG(3,"XferInfo[%d].state == XFER_ERASING\n",i); + pr_debug("XferInfo[%d].state == XFER_ERASING\n",i); n=1; queued = 1; } else if (part->XferInfo[i].state == XFER_ERASED) { - DEBUG(3,"XferInfo[%d].state == XFER_ERASED\n",i); + pr_debug("XferInfo[%d].state == XFER_ERASED\n",i); n=1; prepare_xfer(part, i); } if (part->XferInfo[i].state == XFER_PREPARED) { - DEBUG(3,"XferInfo[%d].state == XFER_PREPARED\n",i); + pr_debug("XferInfo[%d].state == XFER_PREPARED\n",i); n=1; if (part->XferInfo[i].EraseCount <= best) { best = part->XferInfo[i].EraseCount; @@ -641,12 +641,12 @@ static int reclaim_block(partition_t *part) } } if (!n) - DEBUG(3,"XferInfo[%d].state == %x\n",i, part->XferInfo[i].state); + pr_debug("XferInfo[%d].state == %x\n",i, part->XferInfo[i].state); } if (xfer == 0xffff) { if (queued) { - DEBUG(1, "ftl_cs: waiting for transfer " + pr_debug("ftl_cs: waiting for transfer " "unit to be prepared...\n"); if (part->mbd.mtd->sync) part->mbd.mtd->sync(part->mbd.mtd); @@ -656,7 +656,7 @@ static int reclaim_block(partition_t *part) printk(KERN_NOTICE "ftl_cs: reclaim failed: no " "suitable transfer units!\n"); else - DEBUG(1, "ftl_cs: reclaim failed: no " + pr_debug("ftl_cs: reclaim failed: no " "suitable transfer units!\n"); return -EIO; @@ -666,7 +666,7 @@ static int reclaim_block(partition_t *part) eun = 0; if ((jiffies % shuffle_freq) == 0) { - DEBUG(1, "ftl_cs: recycling freshest block...\n"); + pr_debug("ftl_cs: recycling freshest block...\n"); best = 0xffffffff; for (i = 0; i < part->DataUnits; i++) if (part->EUNInfo[i].EraseCount <= best) { @@ -686,7 +686,7 @@ static int reclaim_block(partition_t *part) printk(KERN_NOTICE "ftl_cs: reclaim failed: " "no free blocks!\n"); else - DEBUG(1,"ftl_cs: reclaim failed: " + pr_debug("ftl_cs: reclaim failed: " "no free blocks!\n"); return -EIO; @@ -771,7 +771,7 @@ static uint32_t find_free(partition_t *part) printk(KERN_NOTICE "ftl_cs: bad free list!\n"); return 0; } - DEBUG(2, "ftl_cs: found free block at %d in %d\n", blk, eun); + pr_debug("ftl_cs: found free block at %d in %d\n", blk, eun); return blk; } /* find_free */ @@ -791,7 +791,7 @@ static int ftl_read(partition_t *part, caddr_t buffer, int ret; size_t offset, retlen; - DEBUG(2, "ftl_cs: ftl_read(0x%p, 0x%lx, %ld)\n", + pr_debug("ftl_cs: ftl_read(0x%p, 0x%lx, %ld)\n", part, sector, nblocks); if (!(part->state & FTL_FORMATTED)) { printk(KERN_NOTICE "ftl_cs: bad partition\n"); @@ -840,7 +840,7 @@ static int set_bam_entry(partition_t *part, uint32_t log_addr, int ret; size_t retlen, offset; - DEBUG(2, "ftl_cs: set_bam_entry(0x%p, 0x%x, 0x%x)\n", + pr_debug("ftl_cs: set_bam_entry(0x%p, 0x%x, 0x%x)\n", part, log_addr, virt_addr); bsize = 1 << part->header.EraseUnitSize; eun = log_addr / bsize; @@ -905,7 +905,7 @@ static int ftl_write(partition_t *part, caddr_t buffer, int ret; size_t retlen, offset; - DEBUG(2, "ftl_cs: ftl_write(0x%p, %ld, %ld)\n", + pr_debug("ftl_cs: ftl_write(0x%p, %ld, %ld)\n", part, sector, nblocks); if (!(part->state & FTL_FORMATTED)) { printk(KERN_NOTICE "ftl_cs: bad partition\n"); @@ -1011,7 +1011,7 @@ static int ftl_discardsect(struct mtd_blktrans_dev *dev, partition_t *part = (void *)dev; uint32_t bsize = 1 << part->header.EraseUnitSize; - DEBUG(1, "FTL erase sector %ld for %d sectors\n", + pr_debug("FTL erase sector %ld for %d sectors\n", sector, nr_sects); while (nr_sects) { diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c index c9a31e6..232e11b 100644 --- a/drivers/mtd/inftlcore.c +++ b/drivers/mtd/inftlcore.c @@ -63,7 +63,7 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) return; } - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: add_mtd for %s\n", mtd->name); + pr_debug("INFTL: add_mtd for %s\n", mtd->name); inftl = kzalloc(sizeof(*inftl), GFP_KERNEL); @@ -131,7 +131,7 @@ static void inftl_remove_dev(struct mtd_blktrans_dev *dev) { struct INFTLrecord *inftl = (void *)dev; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: remove_dev (i=%d)\n", dev->devnum); + pr_debug("INFTL: remove_dev (i=%d)\n", dev->devnum); del_mtd_blktrans_dev(dev); @@ -213,7 +213,7 @@ static u16 INFTL_findfreeblock(struct INFTLrecord *inftl, int desperate) u16 pot = inftl->LastFreeEUN; int silly = inftl->nb_blocks; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_findfreeblock(inftl=%p," + pr_debug("INFTL: INFTL_findfreeblock(inftl=%p," "desperate=%d)\n", inftl, desperate); /* @@ -221,7 +221,7 @@ static u16 INFTL_findfreeblock(struct INFTLrecord *inftl, int desperate) * blocks completely. */ if (!desperate && inftl->numfreeEUNs < 2) { - DEBUG(MTD_DEBUG_LEVEL1, "INFTL: there are too few free " + pr_debug("INFTL: there are too few free " "EUNs (%d)\n", inftl->numfreeEUNs); return BLOCK_NIL; } @@ -257,7 +257,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned struct inftl_oob oob; size_t retlen; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_foldchain(inftl=%p,thisVUC=%d," + pr_debug("INFTL: INFTL_foldchain(inftl=%p,thisVUC=%d," "pending=%d)\n", inftl, thisVUC, pendingblock); memset(BlockMap, 0xff, sizeof(BlockMap)); @@ -321,7 +321,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned * Chain, and the Erase Unit into which we are supposed to be copying. * Go for it. */ - DEBUG(MTD_DEBUG_LEVEL1, "INFTL: folding chain %d into unit %d\n", + pr_debug("INFTL: folding chain %d into unit %d\n", thisVUC, targetEUN); for (block = 0; block < inftl->EraseSize/SECTORSIZE ; block++) { @@ -353,7 +353,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned (block * SECTORSIZE), SECTORSIZE, &retlen, movebuf); if (ret != -EIO) - DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went " + pr_debug("INFTL: error went " "away on retry?\n"); } memset(&oob, 0xff, sizeof(struct inftl_oob)); @@ -370,7 +370,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned * is important, by doing oldest first if we crash/reboot then it * it is relatively simple to clean up the mess). */ - DEBUG(MTD_DEBUG_LEVEL1, "INFTL: want to erase virtual chain %d\n", + pr_debug("INFTL: want to erase virtual chain %d\n", thisVUC); for (;;) { @@ -419,7 +419,7 @@ static u16 INFTL_makefreeblock(struct INFTLrecord *inftl, unsigned pendingblock) u16 ChainLength = 0, thislen; u16 chain, EUN; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_makefreeblock(inftl=%p," + pr_debug("INFTL: INFTL_makefreeblock(inftl=%p," "pending=%d)\n", inftl, pendingblock); for (chain = 0; chain < inftl->nb_blocks; chain++) { @@ -482,7 +482,7 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block) size_t retlen; int silly, silly2 = 3; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_findwriteunit(inftl=%p," + pr_debug("INFTL: INFTL_findwriteunit(inftl=%p," "block=%d)\n", inftl, block); do { @@ -499,7 +499,7 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block) blockofs, 8, &retlen, (char *)&bci); status = bci.Status | bci.Status1; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: status of block %d in " + pr_debug("INFTL: status of block %d in " "EUN %d is %x\n", block , writeEUN, status); switch(status) { @@ -553,7 +553,7 @@ hitused: * Hopefully we free something, lets try again. * This time we are desperate... */ - DEBUG(MTD_DEBUG_LEVEL1, "INFTL: using desperate==1 " + pr_debug("INFTL: using desperate==1 " "to find free EUN to accommodate write to " "VUC %d\n", thisVUC); writeEUN = INFTL_findfreeblock(inftl, 1); @@ -645,7 +645,7 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC) struct inftl_bci bci; size_t retlen; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_trydeletechain(inftl=%p," + pr_debug("INFTL: INFTL_trydeletechain(inftl=%p," "thisVUC=%d)\n", inftl, thisVUC); memset(BlockUsed, 0, sizeof(BlockUsed)); @@ -709,7 +709,7 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC) * For each block in the chain free it and make it available * for future use. Erase from the oldest unit first. */ - DEBUG(MTD_DEBUG_LEVEL1, "INFTL: deleting empty VUC %d\n", thisVUC); + pr_debug("INFTL: deleting empty VUC %d\n", thisVUC); for (;;) { u16 *prevEUN = &inftl->VUtable[thisVUC]; @@ -717,7 +717,7 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC) /* If the chain is all gone already, we're done */ if (thisEUN == BLOCK_NIL) { - DEBUG(MTD_DEBUG_LEVEL2, "INFTL: Empty VUC %d for deletion was already absent\n", thisEUN); + pr_debug("INFTL: Empty VUC %d for deletion was already absent\n", thisEUN); return; } @@ -729,7 +729,7 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC) thisEUN = *prevEUN; } - DEBUG(MTD_DEBUG_LEVEL3, "Deleting EUN %d from VUC %d\n", + pr_debug("Deleting EUN %d from VUC %d\n", thisEUN, thisVUC); if (INFTL_formatblock(inftl, thisEUN) < 0) { @@ -765,7 +765,7 @@ static int INFTL_deleteblock(struct INFTLrecord *inftl, unsigned block) size_t retlen; struct inftl_bci bci; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_deleteblock(inftl=%p," + pr_debug("INFTL: INFTL_deleteblock(inftl=%p," "block=%d)\n", inftl, block); while (thisEUN < inftl->nb_blocks) { @@ -824,7 +824,7 @@ static int inftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block, struct inftl_oob oob; char *p, *pend; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_writeblock(inftl=%p,block=%ld," + pr_debug("INFTL: inftl_writeblock(inftl=%p,block=%ld," "buffer=%p)\n", inftl, block, buffer); /* Is block all zero? */ @@ -874,7 +874,7 @@ static int inftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block, struct inftl_bci bci; size_t retlen; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_readblock(inftl=%p,block=%ld," + pr_debug("INFTL: inftl_readblock(inftl=%p,block=%ld," "buffer=%p)\n", inftl, block, buffer); while (thisEUN < inftl->nb_blocks) { diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index 104052e..d969c2d 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -53,7 +53,7 @@ static int find_boot_record(struct INFTLrecord *inftl) struct INFTLPartition *ip; size_t retlen; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: find_boot_record(inftl=%p)\n", inftl); + pr_debug("INFTL: find_boot_record(inftl=%p)\n", inftl); /* * Assume logical EraseSize == physical erasesize for starting the @@ -385,7 +385,7 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block) struct mtd_info *mtd = inftl->mbd.mtd; int physblock; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_formatblock(inftl=%p," + pr_debug("INFTL: INFTL_formatblock(inftl=%p," "block=%d)\n", inftl, block); memset(instr, 0, sizeof(struct erase_info)); @@ -555,7 +555,7 @@ int INFTL_mount(struct INFTLrecord *s) int i; u8 *ANACtable, ANAC; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_mount(inftl=%p)\n", s); + pr_debug("INFTL: INFTL_mount(inftl=%p)\n", s); /* Search for INFTL MediaHeader and Spare INFTL Media Header */ if (find_boot_record(s) < 0) { @@ -585,7 +585,7 @@ int INFTL_mount(struct INFTLrecord *s) * NOTEXPLORED state. Then at the end we will try to format it and * mark it as free. */ - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: pass 1, explore each unit\n"); + pr_debug("INFTL: pass 1, explore each unit\n"); for (first_block = s->firstEUN; first_block <= s->lastEUN; first_block++) { if (s->PUtable[first_block] != BLOCK_NOTEXPLORED) continue; @@ -727,7 +727,7 @@ int INFTL_mount(struct INFTLrecord *s) * possible because we don't update the previous pointers when * we fold chains. No big deal, just fix them up in PUtable. */ - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: pass 2, validate virtual chains\n"); + pr_debug("INFTL: pass 2, validate virtual chains\n"); for (logical_block = 0; logical_block < s->numvunits; logical_block++) { block = s->VUtable[logical_block]; last_block = BLOCK_NIL; @@ -785,7 +785,7 @@ int INFTL_mount(struct INFTLrecord *s) s->numfreeEUNs = 0; s->LastFreeEUN = BLOCK_NIL; - DEBUG(MTD_DEBUG_LEVEL3, "INFTL: pass 3, format unused blocks\n"); + pr_debug("INFTL: pass 3, format unused blocks\n"); for (block = s->firstEUN; block <= s->lastEUN; block++) { if (s->PUtable[block] == BLOCK_NOTEXPLORED) { printk("INFTL: unreferenced block %d, formatting it\n", diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c index 1976b6c..7c1dc90 100644 --- a/drivers/mtd/mtdblock.c +++ b/drivers/mtd/mtdblock.c @@ -119,7 +119,7 @@ static int write_cached_data (struct mtdblk_dev *mtdblk) if (mtdblk->cache_state != STATE_DIRTY) return 0; - DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: writing cached data for \"%s\" " + pr_debug("mtdblock: writing cached data for \"%s\" " "at 0x%lx, size 0x%x\n", mtd->name, mtdblk->cache_offset, mtdblk->cache_size); @@ -148,7 +148,7 @@ static int do_cached_write (struct mtdblk_dev *mtdblk, unsigned long pos, size_t retlen; int ret; - DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: write on \"%s\" at 0x%lx, size 0x%x\n", + pr_debug("mtdblock: write on \"%s\" at 0x%lx, size 0x%x\n", mtd->name, pos, len); if (!sect_size) @@ -218,7 +218,7 @@ static int do_cached_read (struct mtdblk_dev *mtdblk, unsigned long pos, size_t retlen; int ret; - DEBUG(MTD_DEBUG_LEVEL2, "mtdblock: read on \"%s\" at 0x%lx, size 0x%x\n", + pr_debug("mtdblock: read on \"%s\" at 0x%lx, size 0x%x\n", mtd->name, pos, len); if (!sect_size) @@ -283,7 +283,7 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd) { struct mtdblk_dev *mtdblk = container_of(mbd, struct mtdblk_dev, mbd); - DEBUG(MTD_DEBUG_LEVEL1,"mtdblock_open\n"); + pr_debug("mtdblock_open\n"); mutex_lock(&mtdblks_lock); if (mtdblk->count) { @@ -303,7 +303,7 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd) mutex_unlock(&mtdblks_lock); - DEBUG(MTD_DEBUG_LEVEL1, "ok\n"); + pr_debug("ok\n"); return 0; } @@ -312,7 +312,7 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd) { struct mtdblk_dev *mtdblk = container_of(mbd, struct mtdblk_dev, mbd); - DEBUG(MTD_DEBUG_LEVEL1, "mtdblock_release\n"); + pr_debug("mtdblock_release\n"); mutex_lock(&mtdblks_lock); @@ -329,7 +329,7 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd) mutex_unlock(&mtdblks_lock); - DEBUG(MTD_DEBUG_LEVEL1, "ok\n"); + pr_debug("ok\n"); return 0; } diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index e197192..22526e9 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -86,7 +86,7 @@ static int mtd_open(struct inode *inode, struct file *file) struct mtd_file_info *mfi; struct inode *mtd_ino; - DEBUG(MTD_DEBUG_LEVEL0, "MTD_open\n"); + pr_debug("MTD_open\n"); /* You can't open the RO devices RW */ if ((file->f_mode & FMODE_WRITE) && (minor & 1)) @@ -151,7 +151,7 @@ static int mtd_close(struct inode *inode, struct file *file) struct mtd_file_info *mfi = file->private_data; struct mtd_info *mtd = mfi->mtd; - DEBUG(MTD_DEBUG_LEVEL0, "MTD_close\n"); + pr_debug("MTD_close\n"); /* Only sync if opened RW */ if ((file->f_mode & FMODE_WRITE) && mtd->sync) @@ -195,7 +195,7 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t size_t size = count; char *kbuf; - DEBUG(MTD_DEBUG_LEVEL0,"MTD_read\n"); + pr_debug("MTD_read\n"); if (*ppos + count > mtd->size) count = mtd->size - *ppos; @@ -278,7 +278,7 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count int ret=0; int len; - DEBUG(MTD_DEBUG_LEVEL0,"MTD_write\n"); + pr_debug("MTD_write\n"); if (*ppos == mtd->size) return -ENOSPC; @@ -570,7 +570,7 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) u_long size; struct mtd_info_user info; - DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n"); + pr_debug("MTD_ioctl\n"); size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT; if (cmd & IOC_IN) { diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index f9cc2d2..887aed0 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -362,7 +362,7 @@ int add_mtd_device(struct mtd_info *mtd) MTD_DEVT(i) + 1, NULL, "mtd%dro", i); - DEBUG(0, "mtd: Giving out device %d to %s\n", i, mtd->name); + pr_debug("mtd: Giving out device %d to %s\n", i, mtd->name); /* No need to get a refcount on the module containing the notifier, since we hold the mtd_table_mutex */ list_for_each_entry(not, &mtd_notifiers, list) diff --git a/drivers/mtd/mtdsuper.c b/drivers/mtd/mtdsuper.c index 16b02a1..80fe5dc 100644 --- a/drivers/mtd/mtdsuper.c +++ b/drivers/mtd/mtdsuper.c @@ -26,12 +26,12 @@ static int get_sb_mtd_compare(struct super_block *sb, void *_mtd) struct mtd_info *mtd = _mtd; if (sb->s_mtd == mtd) { - DEBUG(2, "MTDSB: Match on device %d (\"%s\")\n", + pr_debug("MTDSB: Match on device %d (\"%s\")\n", mtd->index, mtd->name); return 1; } - DEBUG(2, "MTDSB: No match, device %d (\"%s\"), device %d (\"%s\")\n", + pr_debug("MTDSB: No match, device %d (\"%s\"), device %d (\"%s\")\n", sb->s_mtd->index, sb->s_mtd->name, mtd->index, mtd->name); return 0; } @@ -70,7 +70,7 @@ static struct dentry *mount_mtd_aux(struct file_system_type *fs_type, int flags, goto already_mounted; /* fresh new superblock */ - DEBUG(1, "MTDSB: New superblock for device %d (\"%s\")\n", + pr_debug("MTDSB: New superblock for device %d (\"%s\")\n", mtd->index, mtd->name); sb->s_flags = flags; @@ -87,7 +87,7 @@ static struct dentry *mount_mtd_aux(struct file_system_type *fs_type, int flags, /* new mountpoint for an already mounted superblock */ already_mounted: - DEBUG(1, "MTDSB: Device %d (\"%s\") is already mounted\n", + pr_debug("MTDSB: Device %d (\"%s\") is already mounted\n", mtd->index, mtd->name); put_mtd_device(mtd); return dget(sb->s_root); @@ -108,7 +108,7 @@ static struct dentry *mount_mtd_nr(struct file_system_type *fs_type, int flags, mtd = get_mtd_device(NULL, mtdnr); if (IS_ERR(mtd)) { - DEBUG(0, "MTDSB: Device #%u doesn't appear to exist\n", mtdnr); + pr_debug("MTDSB: Device #%u doesn't appear to exist\n", mtdnr); return ERR_CAST(mtd); } @@ -131,7 +131,7 @@ struct dentry *mount_mtd(struct file_system_type *fs_type, int flags, if (!dev_name) return ERR_PTR(-EINVAL); - DEBUG(2, "MTDSB: dev_name \"%s\"\n", dev_name); + pr_debug("MTDSB: dev_name \"%s\"\n", dev_name); /* the preferred way of mounting in future; especially when * CONFIG_BLOCK=n - we specify the underlying MTD device by number or @@ -142,7 +142,7 @@ struct dentry *mount_mtd(struct file_system_type *fs_type, int flags, struct mtd_info *mtd; /* mount by MTD device name */ - DEBUG(1, "MTDSB: mtd:%%s, name \"%s\"\n", + pr_debug("MTDSB: mtd:%%s, name \"%s\"\n", dev_name + 4); mtd = get_mtd_device_nm(dev_name + 4); @@ -163,7 +163,7 @@ struct dentry *mount_mtd(struct file_system_type *fs_type, int flags, mtdnr = simple_strtoul(dev_name + 3, &endptr, 0); if (!*endptr) { /* It was a valid number */ - DEBUG(1, "MTDSB: mtd%%d, mtdnr %d\n", + pr_debug("MTDSB: mtd%%d, mtdnr %d\n", mtdnr); return mount_mtd_nr(fs_type, flags, dev_name, data, @@ -179,10 +179,10 @@ struct dentry *mount_mtd(struct file_system_type *fs_type, int flags, bdev = lookup_bdev(dev_name); if (IS_ERR(bdev)) { ret = PTR_ERR(bdev); - DEBUG(1, "MTDSB: lookup_bdev() returned %d\n", ret); + pr_debug("MTDSB: lookup_bdev() returned %d\n", ret); return ERR_PTR(ret); } - DEBUG(1, "MTDSB: lookup_bdev() returned 0\n"); + pr_debug("MTDSB: lookup_bdev() returned 0\n"); ret = -EINVAL; diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 4c2bb4a..2fbfb71 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -349,7 +349,7 @@ static void wait_op_done(struct mxc_nand_host *host, int useirq) udelay(1); } if (max_retries < 0) - DEBUG(MTD_DEBUG_LEVEL0, "%s: INT not set\n", + pr_debug("%s: INT not set\n", __func__); } } @@ -370,7 +370,7 @@ static void send_cmd_v3(struct mxc_nand_host *host, uint16_t cmd, int useirq) * waits for completion. */ static void send_cmd_v1_v2(struct mxc_nand_host *host, uint16_t cmd, int useirq) { - DEBUG(MTD_DEBUG_LEVEL3, "send_cmd(host, 0x%x, %d)\n", cmd, useirq); + pr_debug("send_cmd(host, 0x%x, %d)\n", cmd, useirq); writew(cmd, NFC_V1_V2_FLASH_CMD); writew(NFC_CMD, NFC_V1_V2_CONFIG2); @@ -386,7 +386,7 @@ static void send_cmd_v1_v2(struct mxc_nand_host *host, uint16_t cmd, int useirq) udelay(1); } if (max_retries < 0) - DEBUG(MTD_DEBUG_LEVEL0, "%s: RESET failed\n", + pr_debug("%s: RESET failed\n", __func__); } else { /* Wait for operation to complete */ @@ -410,7 +410,7 @@ static void send_addr_v3(struct mxc_nand_host *host, uint16_t addr, int islast) * a NAND command. */ static void send_addr_v1_v2(struct mxc_nand_host *host, uint16_t addr, int islast) { - DEBUG(MTD_DEBUG_LEVEL3, "send_addr(host, 0x%x %d)\n", addr, islast); + pr_debug("send_addr(host, 0x%x %d)\n", addr, islast); writew(addr, NFC_V1_V2_FLASH_ADDR); writew(NFC_ADDR, NFC_V1_V2_CONFIG2); @@ -560,8 +560,7 @@ static int mxc_nand_correct_data_v1(struct mtd_info *mtd, u_char *dat, uint16_t ecc_status = readw(NFC_V1_V2_ECC_STATUS_RESULT); if (((ecc_status & 0x3) == 2) || ((ecc_status >> 2) == 2)) { - DEBUG(MTD_DEBUG_LEVEL0, - "MXC_NAND: HWECC uncorrectable 2-bit ECC error\n"); + pr_debug("MXC_NAND: HWECC uncorrectable 2-bit ECC error\n"); return -1; } @@ -931,8 +930,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, struct nand_chip *nand_chip = mtd->priv; struct mxc_nand_host *host = nand_chip->priv; - DEBUG(MTD_DEBUG_LEVEL3, - "mxc_nand_command (cmd = 0x%x, col = 0x%x, page = 0x%x)\n", + pr_debug("mxc_nand_command (cmd = 0x%x, col = 0x%x, page = 0x%x)\n", command, column, page_addr); /* Reset command state information */ diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 6a52712..7f2691f 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -113,21 +113,19 @@ static int check_offs_len(struct mtd_info *mtd, /* Start address must align on block boundary */ if (ofs & ((1 << chip->phys_erase_shift) - 1)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Unaligned address\n", __func__); + pr_debug("%s: unaligned address\n", __func__); ret = -EINVAL; } /* Length must align on block boundary */ if (len & ((1 << chip->phys_erase_shift) - 1)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Length not block aligned\n", - __func__); + pr_debug("%s: length not block aligned\n", __func__); ret = -EINVAL; } /* Do not allow past end of device */ if (ofs + len > mtd->size) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Past end of device\n", - __func__); + pr_debug("%s: past end of device\n", __func__); ret = -EINVAL; } @@ -913,7 +911,7 @@ static int __nand_unlock(struct mtd_info *mtd, loff_t ofs, status = chip->waitfunc(mtd, chip); /* See if device thinks it succeeded */ if (status & 0x01) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Error status = 0x%08x\n", + pr_debug("%s: error status = 0x%08x\n", __func__, status); ret = -EIO; } @@ -935,7 +933,7 @@ int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) int chipnr; struct nand_chip *chip = mtd->priv; - DEBUG(MTD_DEBUG_LEVEL3, "%s: start = 0x%012llx, len = %llu\n", + pr_debug("%s: start = 0x%012llx, len = %llu\n", __func__, (unsigned long long)ofs, len); if (check_offs_len(mtd, ofs, len)) @@ -954,7 +952,7 @@ int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) /* Check, if it is write protected */ if (nand_check_wp(mtd)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Device is write protected!!!\n", + pr_debug("%s: device is write protected!\n", __func__); ret = -EIO; goto out; @@ -988,7 +986,7 @@ int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) int chipnr, status, page; struct nand_chip *chip = mtd->priv; - DEBUG(MTD_DEBUG_LEVEL3, "%s: start = 0x%012llx, len = %llu\n", + pr_debug("%s: start = 0x%012llx, len = %llu\n", __func__, (unsigned long long)ofs, len); if (check_offs_len(mtd, ofs, len)) @@ -1003,7 +1001,7 @@ int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) /* Check, if it is write protected */ if (nand_check_wp(mtd)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Device is write protected!!!\n", + pr_debug("%s: device is write protected!\n", __func__); status = MTD_ERASE_FAILED; ret = -EIO; @@ -1018,7 +1016,7 @@ int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) status = chip->waitfunc(mtd, chip); /* See if device thinks it succeeded */ if (status & 0x01) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Error status = 0x%08x\n", + pr_debug("%s: error status = 0x%08x\n", __func__, status); ret = -EIO; goto out; @@ -1756,7 +1754,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, int len; uint8_t *buf = ops->oobbuf; - DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08Lx, len = %i\n", + pr_debug("%s: from = 0x%08Lx, len = %i\n", __func__, (unsigned long long)from, readlen); stats = mtd->ecc_stats; @@ -1767,8 +1765,8 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, len = mtd->oobsize; if (unlikely(ops->ooboffs >= len)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Attempt to start read " - "outside oob\n", __func__); + pr_debug("%s: attempt to start read outside oob\n", + __func__); return -EINVAL; } @@ -1776,8 +1774,8 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, if (unlikely(from >= mtd->size || ops->ooboffs + readlen > ((mtd->size >> chip->page_shift) - (from >> chip->page_shift)) * len)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Attempt read beyond end " - "of device\n", __func__); + pr_debug("%s: attempt to read beyond end of device\n", + __func__); return -EINVAL; } @@ -1856,8 +1854,8 @@ static int nand_read_oob(struct mtd_info *mtd, loff_t from, /* Do not allow reads past end of device */ if (ops->datbuf && (from + ops->len) > mtd->size) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Attempt read " - "beyond end of device\n", __func__); + pr_debug("%s: attempt to read beyond end of device\n", + __func__); return -EINVAL; } @@ -2352,7 +2350,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, int chipnr, page, status, len; struct nand_chip *chip = mtd->priv; - DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", + pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int)to, (int)ops->ooblen); if (ops->mode == MTD_OOB_AUTO) @@ -2362,14 +2360,14 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, /* Do not allow write past end of page */ if ((ops->ooboffs + ops->ooblen) > len) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Attempt to write " - "past end of page\n", __func__); + pr_debug("%s: attempt to write past end of page\n", + __func__); return -EINVAL; } if (unlikely(ops->ooboffs >= len)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Attempt to start " - "write outside oob\n", __func__); + pr_debug("%s: attempt to start write outside oob\n", + __func__); return -EINVAL; } @@ -2378,8 +2376,8 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, ops->ooboffs + ops->ooblen > ((mtd->size >> chip->page_shift) - (to >> chip->page_shift)) * len)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Attempt write beyond " - "end of device\n", __func__); + pr_debug("%s: attempt to write beyond end of device\n", + __func__); return -EINVAL; } @@ -2432,8 +2430,8 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, /* Do not allow writes past end of device */ if (ops->datbuf && (to + ops->len) > mtd->size) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Attempt write beyond " - "end of device\n", __func__); + pr_debug("%s: attempt to write beyond end of device\n", + __func__); return -EINVAL; } @@ -2522,9 +2520,9 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, unsigned int bbt_masked_page = 0xffffffff; loff_t len; - DEBUG(MTD_DEBUG_LEVEL3, "%s: start = 0x%012llx, len = %llu\n", - __func__, (unsigned long long)instr->addr, - (unsigned long long)instr->len); + pr_debug("%s: start = 0x%012llx, len = %llu\n", + __func__, (unsigned long long)instr->addr, + (unsigned long long)instr->len); if (check_offs_len(mtd, instr->addr, instr->len)) return -EINVAL; @@ -2546,8 +2544,8 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, /* Check, if it is write protected */ if (nand_check_wp(mtd)) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Device is write protected!!!\n", - __func__); + pr_debug("%s: device is write protected!\n", + __func__); instr->state = MTD_ERASE_FAILED; goto erase_exit; } @@ -2598,8 +2596,8 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, /* See if block erase succeeded */ if (status & NAND_STATUS_FAIL) { - DEBUG(MTD_DEBUG_LEVEL0, "%s: Failed erase, " - "page 0x%08x\n", __func__, page); + pr_debug("%s: failed erase, page 0x%08x\n", + __func__, page); instr->state = MTD_ERASE_FAILED; instr->fail_addr = ((loff_t)page << chip->page_shift); @@ -2659,9 +2657,9 @@ erase_exit: if (!rewrite_bbt[chipnr]) continue; /* Update the BBT for chip */ - DEBUG(MTD_DEBUG_LEVEL0, "%s: nand_update_bbt " - "(%d:0x%0llx 0x%0x)\n", __func__, chipnr, - rewrite_bbt[chipnr], chip->bbt_td->pages[chipnr]); + pr_debug("%s: nand_update_bbt (%d:0x%0llx 0x%0x)\n", + __func__, chipnr, rewrite_bbt[chipnr], + chip->bbt_td->pages[chipnr]); nand_update_bbt(mtd, rewrite_bbt[chipnr]); } @@ -2679,7 +2677,7 @@ static void nand_sync(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; - DEBUG(MTD_DEBUG_LEVEL3, "%s: called\n", __func__); + pr_debug("%s: called\n", __func__); /* Grab the lock and see if the device is available */ nand_get_device(chip, mtd, FL_SYNCING); diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index dba3323..6aa8125 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -1383,8 +1383,9 @@ int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) block = (int)(offs >> (this->bbt_erase_shift - 1)); res = (this->bbt[block >> 3] >> (block & 0x06)) & 0x03; - DEBUG(MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n", - (unsigned int)offs, block >> 1, res); + pr_debug("nand_isbad_bbt(): bbt info for offs 0x%08x: " + "(block %d) 0x%02x\n", + (unsigned int)offs, block >> 1, res); switch ((int)res) { case 0x00: diff --git a/drivers/mtd/nand/nand_bch.c b/drivers/mtd/nand/nand_bch.c index 0f931e7..16cca9b 100644 --- a/drivers/mtd/nand/nand_bch.c +++ b/drivers/mtd/nand/nand_bch.c @@ -93,7 +93,7 @@ int nand_bch_correct_data(struct mtd_info *mtd, unsigned char *buf, buf[errloc[i] >> 3] ^= (1 << (errloc[i] & 7)); /* else error in ecc, no action needed */ - DEBUG(MTD_DEBUG_LEVEL0, "%s: corrected bitflip %u\n", + pr_debug("%s: corrected bitflip %u\n", __func__, errloc[i]); } } else if (count < 0) { diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index c5e33fd..81e6bc0 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -741,12 +741,12 @@ static int omap_compare_ecc(u8 *ecc_data1, /* read from NAND memory */ case 1: /* Uncorrectable error */ - DEBUG(MTD_DEBUG_LEVEL0, "ECC UNCORRECTED_ERROR 1\n"); + pr_debug("ECC UNCORRECTED_ERROR 1\n"); return -1; case 11: /* UN-Correctable error */ - DEBUG(MTD_DEBUG_LEVEL0, "ECC UNCORRECTED_ERROR B\n"); + pr_debug("ECC UNCORRECTED_ERROR B\n"); return -1; case 12: @@ -763,7 +763,7 @@ static int omap_compare_ecc(u8 *ecc_data1, /* read from NAND memory */ find_bit = (ecc_bit[5] << 2) + (ecc_bit[3] << 1) + ecc_bit[1]; - DEBUG(MTD_DEBUG_LEVEL0, "Correcting single bit ECC error at " + pr_debug("Correcting single bit ECC error at " "offset: %d, bit: %d\n", find_byte, find_bit); page_data[find_byte] ^= (1 << find_bit); @@ -776,7 +776,7 @@ static int omap_compare_ecc(u8 *ecc_data1, /* read from NAND memory */ ecc_data2[2] == 0) return 0; } - DEBUG(MTD_DEBUG_LEVEL0, "UNCORRECTED_ERROR default\n"); + pr_debug("UNCORRECTED_ERROR default\n"); return -1; } } diff --git a/drivers/mtd/nand/rtc_from4.c b/drivers/mtd/nand/rtc_from4.c index 33fe922..f309add 100644 --- a/drivers/mtd/nand/rtc_from4.c +++ b/drivers/mtd/nand/rtc_from4.c @@ -380,7 +380,7 @@ static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_cha /* Let the library code do its magic. */ res = decode_rs8(rs_decoder, (uint8_t *) buf, par, 512, syn, 0, NULL, 0xff, NULL); if (res > 0) { - DEBUG(MTD_DEBUG_LEVEL0, "rtc_from4_correct_data: " "ECC corrected %d errors on read\n", res); + pr_debug("rtc_from4_correct_data: " "ECC corrected %d errors on read\n", res); } return res; } diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c index f3b3239..93d6fc6 100644 --- a/drivers/mtd/nftlcore.c +++ b/drivers/mtd/nftlcore.c @@ -63,7 +63,7 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) return; } - DEBUG(MTD_DEBUG_LEVEL1, "NFTL: add_mtd for %s\n", mtd->name); + pr_debug("NFTL: add_mtd for %s\n", mtd->name); nftl = kzalloc(sizeof(struct NFTLrecord), GFP_KERNEL); @@ -130,7 +130,7 @@ static void nftl_remove_dev(struct mtd_blktrans_dev *dev) { struct NFTLrecord *nftl = (void *)dev; - DEBUG(MTD_DEBUG_LEVEL1, "NFTL: remove_dev (i=%d)\n", dev->devnum); + pr_debug("NFTL: remove_dev (i=%d)\n", dev->devnum); del_mtd_blktrans_dev(dev); kfree(nftl->ReplUnitTable); @@ -218,7 +218,7 @@ static u16 NFTL_findfreeblock(struct NFTLrecord *nftl, int desperate ) /* Normally, we force a fold to happen before we run out of free blocks completely */ if (!desperate && nftl->numfreeEUNs < 2) { - DEBUG(MTD_DEBUG_LEVEL1, "NFTL_findfreeblock: there are too few free EUNs\n"); + pr_debug("NFTL_findfreeblock: there are too few free EUNs\n"); return BLOCK_NIL; } @@ -289,8 +289,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p if (block == 2) { foldmark = oob.u.c.FoldMark | oob.u.c.FoldMark1; if (foldmark == FOLD_MARK_IN_PROGRESS) { - DEBUG(MTD_DEBUG_LEVEL1, - "Write Inhibited on EUN %d\n", thisEUN); + pr_debug("Write Inhibited on EUN %d\n", thisEUN); inplace = 0; } else { /* There's no other reason not to do inplace, @@ -355,7 +354,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p if (BlockLastState[block] != SECTOR_FREE && BlockMap[block] != BLOCK_NIL && BlockMap[block] != targetEUN) { - DEBUG(MTD_DEBUG_LEVEL1, "Setting inplace to 0. VUC %d, " + pr_debug("Setting inplace to 0. VUC %d, " "block %d was %x lastEUN, " "and is in EUN %d (%s) %d\n", thisVUC, block, BlockLastState[block], @@ -371,14 +370,14 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p pendingblock < ((thisVUC + 1)* (nftl->EraseSize / 512)) && BlockLastState[pendingblock - (thisVUC * (nftl->EraseSize / 512))] != SECTOR_FREE) { - DEBUG(MTD_DEBUG_LEVEL1, "Pending write not free in EUN %d. " + pr_debug("Pending write not free in EUN %d. " "Folding out of place.\n", targetEUN); inplace = 0; } } if (!inplace) { - DEBUG(MTD_DEBUG_LEVEL1, "Cannot fold Virtual Unit Chain %d in place. " + pr_debug("Cannot fold Virtual Unit Chain %d in place. " "Trying out-of-place\n", thisVUC); /* We need to find a targetEUN to fold into. */ targetEUN = NFTL_findfreeblock(nftl, 1); @@ -408,7 +407,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p and the Erase Unit into which we are supposed to be copying. Go for it. */ - DEBUG(MTD_DEBUG_LEVEL1,"Folding chain %d into unit %d\n", thisVUC, targetEUN); + pr_debug("Folding chain %d into unit %d\n", thisVUC, targetEUN); for (block = 0; block < nftl->EraseSize / 512 ; block++) { unsigned char movebuf[512]; int ret; @@ -455,7 +454,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p has duplicate chains, we need to free one of the chains because it's not necessary any more. */ thisEUN = nftl->EUNtable[thisVUC]; - DEBUG(MTD_DEBUG_LEVEL1,"Want to erase\n"); + pr_debug("Want to erase\n"); /* For each block in the old chain (except the targetEUN of course), free it and make it available for future use */ @@ -568,7 +567,7 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block) (writeEUN * nftl->EraseSize) + blockofs, 8, &retlen, (char *)&bci); - DEBUG(MTD_DEBUG_LEVEL2, "Status of block %d in EUN %d is %x\n", + pr_debug("Status of block %d in EUN %d is %x\n", block , writeEUN, le16_to_cpu(bci.Status)); status = bci.Status | bci.Status1; @@ -621,7 +620,7 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block) but they are reserved for when we're desperate. Well, now we're desperate. */ - DEBUG(MTD_DEBUG_LEVEL1, "Using desperate==1 to find free EUN to accommodate write to VUC %d\n", thisVUC); + pr_debug("Using desperate==1 to find free EUN to accommodate write to VUC %d\n", thisVUC); writeEUN = NFTL_findfreeblock(nftl, 1); } if (writeEUN == BLOCK_NIL) { diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 30c652c..b07b052 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1122,7 +1122,7 @@ static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from, int ret = 0; int writesize = this->writesize; - DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n", + pr_debug("%s: from = 0x%08x, len = %i\n", __func__, (unsigned int) from, (int) len); if (ops->mode == MTD_OOB_AUTO) @@ -1226,7 +1226,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, int ret = 0, boundary = 0; int writesize = this->writesize; - DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n", + pr_debug("%s: from = 0x%08x, len = %i\n", __func__, (unsigned int) from, (int) len); if (ops->mode == MTD_OOB_AUTO) @@ -1357,7 +1357,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, from += ops->ooboffs; - DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n", + pr_debug("%s: from = 0x%08x, len = %i\n", __func__, (unsigned int) from, (int) len); /* Initialize return length value */ @@ -1576,7 +1576,7 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, size_t len = ops->ooblen; u_char *buf = ops->oobbuf; - DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %zi\n", + pr_debug("%s: from = 0x%08x, len = %zi\n", __func__, (unsigned int) from, len); /* Initialize return value */ @@ -1750,7 +1750,7 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len, /* Wait for any existing operation to clear */ onenand_panic_wait(mtd); - DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", + pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int) to, (int) len); /* Initialize retlen, in case of early exit */ @@ -1883,7 +1883,7 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, u_char *oobbuf; int ret = 0, cmd; - DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", + pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int) to, (int) len); /* Initialize retlen, in case of early exit */ @@ -2078,7 +2078,7 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, to += ops->ooboffs; - DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", + pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int) to, (int) len); /* Initialize retlen, in case of early exit */ @@ -2489,7 +2489,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) struct mtd_erase_region_info *region = NULL; loff_t region_offset = 0; - DEBUG(MTD_DEBUG_LEVEL3, "%s: start=0x%012llx, len=%llu\n", __func__, + pr_debug("%s: start=0x%012llx, len=%llu\n", __func__, (unsigned long long) instr->addr, (unsigned long long) instr->len); /* Do not allow erase past end of device */ @@ -2558,7 +2558,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) */ static void onenand_sync(struct mtd_info *mtd) { - DEBUG(MTD_DEBUG_LEVEL3, "%s: called\n", __func__); + pr_debug("%s: called\n", __func__); /* Grab the lock and see if the device is available */ onenand_get_device(mtd, FL_SYNCING); diff --git a/drivers/mtd/onenand/onenand_bbt.c b/drivers/mtd/onenand/onenand_bbt.c index 09a7d1f..3b9a2a9 100644 --- a/drivers/mtd/onenand/onenand_bbt.c +++ b/drivers/mtd/onenand/onenand_bbt.c @@ -153,7 +153,7 @@ static int onenand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) block = (int) (onenand_block(this, offs) << 1); res = (bbm->bbt[block >> 3] >> (block & 0x06)) & 0x03; - DEBUG(MTD_DEBUG_LEVEL2, "onenand_isbad_bbt: bbt info for offs 0x%08x: (block %d) 0x%02x\n", + pr_debug("onenand_isbad_bbt: bbt info for offs 0x%08x: (block %d) 0x%02x\n", (unsigned int) offs, block >> 1, res); switch ((int) res) { diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c index 00d1405..5f917f0 100644 --- a/drivers/mtd/ssfdc.c +++ b/drivers/mtd/ssfdc.c @@ -135,8 +135,7 @@ static int get_valid_cis_sector(struct mtd_info *mtd) /* Found */ cis_sector = (int)(offset >> SECTOR_SHIFT); } else { - DEBUG(MTD_DEBUG_LEVEL1, - "SSFDC_RO: CIS/IDI sector not found" + pr_debug("SSFDC_RO: CIS/IDI sector not found" " on %s (mtd%d)\n", mtd->name, mtd->index); } @@ -221,8 +220,7 @@ static int get_logical_address(uint8_t *oob_buf) block_address >>= 1; if (get_parity(block_address, 10) != parity) { - DEBUG(MTD_DEBUG_LEVEL0, - "SSFDC_RO: logical address field%d" + pr_debug("SSFDC_RO: logical address field%d" "parity error(0x%04X)\n", j+1, block_address); } else { @@ -235,7 +233,7 @@ static int get_logical_address(uint8_t *oob_buf) if (!ok) block_address = -2; - DEBUG(MTD_DEBUG_LEVEL3, "SSFDC_RO: get_logical_address() %d\n", + pr_debug("SSFDC_RO: get_logical_address() %d\n", block_address); return block_address; @@ -249,7 +247,7 @@ static int build_logical_block_map(struct ssfdcr_record *ssfdc) int ret, block_address, phys_block; struct mtd_info *mtd = ssfdc->mbd.mtd; - DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: build_block_map() nblks=%d (%luK)\n", + pr_debug("SSFDC_RO: build_block_map() nblks=%d (%luK)\n", ssfdc->map_len, (unsigned long)ssfdc->map_len * ssfdc->erase_size / 1024); @@ -262,8 +260,7 @@ static int build_logical_block_map(struct ssfdcr_record *ssfdc) ret = read_raw_oob(mtd, offset, oob_buf); if (ret < 0) { - DEBUG(MTD_DEBUG_LEVEL0, - "SSFDC_RO: mtd read_oob() failed at %lu\n", + pr_debug("SSFDC_RO: mtd read_oob() failed at %lu\n", offset); return -1; } @@ -279,8 +276,7 @@ static int build_logical_block_map(struct ssfdcr_record *ssfdc) ssfdc->logic_block_map[block_address] = (unsigned short)phys_block; - DEBUG(MTD_DEBUG_LEVEL2, - "SSFDC_RO: build_block_map() phys_block=%d," + pr_debug("SSFDC_RO: build_block_map() phys_block=%d," "logic_block_addr=%d, zone=%d\n", phys_block, block_address, zone_index); } @@ -316,8 +312,7 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) ssfdc->erase_size = mtd->erasesize; ssfdc->map_len = (u32)mtd->size / mtd->erasesize; - DEBUG(MTD_DEBUG_LEVEL1, - "SSFDC_RO: cis_block=%d,erase_size=%d,map_len=%d,n_zones=%d\n", + pr_debug("SSFDC_RO: cis_block=%d,erase_size=%d,map_len=%d,n_zones=%d\n", ssfdc->cis_block, ssfdc->erase_size, ssfdc->map_len, DIV_ROUND_UP(ssfdc->map_len, MAX_PHYS_BLK_PER_ZONE)); @@ -328,7 +323,7 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) ssfdc->cylinders = (unsigned short)(((u32)mtd->size >> SECTOR_SHIFT) / ((long)ssfdc->sectors * (long)ssfdc->heads)); - DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: using C:%d H:%d S:%d == %ld sects\n", + pr_debug("SSFDC_RO: using C:%d H:%d S:%d == %ld sects\n", ssfdc->cylinders, ssfdc->heads , ssfdc->sectors, (long)ssfdc->cylinders * (long)ssfdc->heads * (long)ssfdc->sectors); @@ -365,7 +360,7 @@ static void ssfdcr_remove_dev(struct mtd_blktrans_dev *dev) { struct ssfdcr_record *ssfdc = (struct ssfdcr_record *)dev; - DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: remove_dev (i=%d)\n", dev->devnum); + pr_debug("SSFDC_RO: remove_dev (i=%d)\n", dev->devnum); del_mtd_blktrans_dev(dev); kfree(ssfdc->logic_block_map); @@ -381,8 +376,7 @@ static int ssfdcr_readsect(struct mtd_blktrans_dev *dev, offset = (int)(logic_sect_no % sectors_per_block); block_address = (int)(logic_sect_no / sectors_per_block); - DEBUG(MTD_DEBUG_LEVEL3, - "SSFDC_RO: ssfdcr_readsect(%lu) sec_per_blk=%d, ofst=%d," + pr_debug("SSFDC_RO: ssfdcr_readsect(%lu) sec_per_blk=%d, ofst=%d," " block_addr=%d\n", logic_sect_no, sectors_per_block, offset, block_address); @@ -391,8 +385,7 @@ static int ssfdcr_readsect(struct mtd_blktrans_dev *dev, block_address = ssfdc->logic_block_map[block_address]; - DEBUG(MTD_DEBUG_LEVEL3, - "SSFDC_RO: ssfdcr_readsect() phys_block_addr=%d\n", + pr_debug("SSFDC_RO: ssfdcr_readsect() phys_block_addr=%d\n", block_address); if (block_address < 0xffff) { @@ -401,8 +394,7 @@ static int ssfdcr_readsect(struct mtd_blktrans_dev *dev, sect_no = (unsigned long)block_address * sectors_per_block + offset; - DEBUG(MTD_DEBUG_LEVEL3, - "SSFDC_RO: ssfdcr_readsect() phys_sect_no=%lu\n", + pr_debug("SSFDC_RO: ssfdcr_readsect() phys_sect_no=%lu\n", sect_no); if (read_physical_sector(ssfdc->mbd.mtd, buf, sect_no) < 0) @@ -418,7 +410,7 @@ static int ssfdcr_getgeo(struct mtd_blktrans_dev *dev, struct hd_geometry *geo) { struct ssfdcr_record *ssfdc = (struct ssfdcr_record *)dev; - DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: ssfdcr_getgeo() C=%d, H=%d, S=%d\n", + pr_debug("SSFDC_RO: ssfdcr_getgeo() C=%d, H=%d, S=%d\n", ssfdc->cylinders, ssfdc->heads, ssfdc->sectors); geo->heads = ssfdc->heads; -- cgit v0.10.2 From 0a32a10264d151bc2d1616d69edaf915aa728698 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:10 -0700 Subject: mtd: cleanup style on pr_debug messages Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 2302cc0..8d70895 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -440,8 +440,8 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) mtd->writesize = 1; mtd->writebufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize; - pr_debug("MTD %s(): write buffer size %d\n", - __func__, mtd->writebufsize); + pr_debug("MTD %s(): write buffer size %d\n", __func__, + mtd->writebufsize); mtd->reboot_notifier.notifier_call = cfi_amdstd_reboot; @@ -1798,8 +1798,7 @@ static int do_atmel_lock(struct map_info *map, struct flchip *chip, goto out_unlock; chip->state = FL_LOCKING; - pr_debug("MTD %s(): LOCK 0x%08lx len %d\n", - __func__, adr, len); + pr_debug("MTD %s(): LOCK 0x%08lx len %d\n", __func__, adr, len); cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); @@ -1834,8 +1833,7 @@ static int do_atmel_unlock(struct map_info *map, struct flchip *chip, goto out_unlock; chip->state = FL_UNLOCKING; - pr_debug("MTD %s(): LOCK 0x%08lx len %d\n", - __func__, adr, len); + pr_debug("MTD %s(): LOCK 0x%08lx len %d\n", __func__, adr, len); cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL); diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 6417bd6..e6ba034 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -208,9 +208,8 @@ static int wait_till_ready(struct m25p *flash) */ static int erase_chip(struct m25p *flash) { - pr_debug("%s: %s %lldKiB\n", - dev_name(&flash->spi->dev), __func__, - (long long)(flash->mtd.size >> 10)); + pr_debug("%s: %s %lldKiB\n", dev_name(&flash->spi->dev), __func__, + (long long)(flash->mtd.size >> 10)); /* Wait until finished previous write command. */ if (wait_till_ready(flash)) @@ -249,9 +248,8 @@ static int m25p_cmdsz(struct m25p *flash) */ static int erase_sector(struct m25p *flash, u32 offset) { - pr_debug("%s: %s %dKiB at 0x%08x\n", - dev_name(&flash->spi->dev), __func__, - flash->mtd.erasesize / 1024, offset); + pr_debug("%s: %s %dKiB at 0x%08x\n", dev_name(&flash->spi->dev), + __func__, flash->mtd.erasesize / 1024, offset); /* Wait until finished previous write command. */ if (wait_till_ready(flash)) @@ -285,9 +283,9 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr) u32 addr,len; uint32_t rem; - pr_debug("%s: %s %s 0x%llx, len %lld\n", - dev_name(&flash->spi->dev), __func__, "at", - (long long)instr->addr, (long long)instr->len); + pr_debug("%s: %s at 0x%llx, len %lld\n", dev_name(&flash->spi->dev), + __func__, (long long)instr->addr, + (long long)instr->len); /* sanity checks */ if (instr->addr + instr->len > flash->mtd.size) @@ -347,9 +345,8 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len, struct spi_transfer t[2]; struct spi_message m; - pr_debug("%s: %s %s 0x%08x, len %zd\n", - dev_name(&flash->spi->dev), __func__, "from", - (u32)from, len); + pr_debug("%s: %s from 0x%08x, len %zd\n", dev_name(&flash->spi->dev), + __func__, (u32)from, len); /* sanity checks */ if (!len) @@ -416,9 +413,8 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len, struct spi_transfer t[2]; struct spi_message m; - pr_debug("%s: %s %s 0x%08x, len %zd\n", - dev_name(&flash->spi->dev), __func__, "to", - (u32)to, len); + pr_debug("%s: %s to 0x%08x, len %zd\n", dev_name(&flash->spi->dev), + __func__, (u32)to, len); *retlen = 0; @@ -509,9 +505,8 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, size_t actual; int cmd_sz, ret; - pr_debug("%s: %s %s 0x%08x, len %zd\n", - dev_name(&flash->spi->dev), __func__, "to", - (u32)to, len); + pr_debug("%s: %s to 0x%08x, len %zd\n", dev_name(&flash->spi->dev), + __func__, (u32)to, len); *retlen = 0; @@ -788,7 +783,7 @@ static const struct spi_device_id *__devinit jedec_probe(struct spi_device *spi) tmp = spi_write_then_read(spi, &code, 1, id, 5); if (tmp < 0) { pr_debug("%s: error %d reading JEDEC ID\n", - dev_name(&spi->dev), tmp); + dev_name(&spi->dev), tmp); return ERR_PTR(tmp); } jedec = id[0]; diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index f409aef..d75c7af 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -249,8 +249,8 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len, uint8_t *command; int status; - pr_debug("%s: read 0x%x..0x%x\n", - dev_name(&priv->spi->dev), (unsigned)from, (unsigned)(from + len)); + pr_debug("%s: read 0x%x..0x%x\n", dev_name(&priv->spi->dev), + (unsigned)from, (unsigned)(from + len)); *retlen = 0; @@ -384,7 +384,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, status = spi_sync(spi, &msg); if (status < 0) - pr_debug("%s: xfer %u -> %d \n", + pr_debug("%s: xfer %u -> %d\n", dev_name(&spi->dev), addr, status); (void) dataflash_waitready(priv->spi); @@ -406,7 +406,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, status = spi_sync(spi, &msg); spi_transfer_del(x + 1); if (status < 0) - pr_debug("%s: pgm %u/%u -> %d \n", + pr_debug("%s: pgm %u/%u -> %d\n", dev_name(&spi->dev), addr, writelen, status); (void) dataflash_waitready(priv->spi); @@ -426,7 +426,7 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len, status = spi_sync(spi, &msg); if (status < 0) - pr_debug("%s: compare %u -> %d \n", + pr_debug("%s: compare %u -> %d\n", dev_name(&spi->dev), addr, status); status = dataflash_waitready(priv->spi); @@ -906,14 +906,14 @@ static int __devinit dataflash_probe(struct spi_device *spi) break; /* obsolete AT45DB1282 not (yet?) supported */ default: - pr_debug("%s: unsupported device (%x)\n", - dev_name(&spi->dev), status & 0x3c); + pr_debug("%s: unsupported device (%x)\n", dev_name(&spi->dev), + status & 0x3c); status = -ENODEV; } if (status < 0) - pr_debug("%s: add_dataflash --> %d\n", - dev_name(&spi->dev), status); + pr_debug("%s: add_dataflash --> %d\n", dev_name(&spi->dev), + status); return status; } diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c index 232e11b..21aa981 100644 --- a/drivers/mtd/inftlcore.c +++ b/drivers/mtd/inftlcore.c @@ -213,16 +213,16 @@ static u16 INFTL_findfreeblock(struct INFTLrecord *inftl, int desperate) u16 pot = inftl->LastFreeEUN; int silly = inftl->nb_blocks; - pr_debug("INFTL: INFTL_findfreeblock(inftl=%p," - "desperate=%d)\n", inftl, desperate); + pr_debug("INFTL: INFTL_findfreeblock(inftl=%p,desperate=%d)\n", + inftl, desperate); /* * Normally, we force a fold to happen before we run out of free * blocks completely. */ if (!desperate && inftl->numfreeEUNs < 2) { - pr_debug("INFTL: there are too few free " - "EUNs (%d)\n", inftl->numfreeEUNs); + pr_debug("INFTL: there are too few free EUNs (%d)\n", + inftl->numfreeEUNs); return BLOCK_NIL; } @@ -257,8 +257,8 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned struct inftl_oob oob; size_t retlen; - pr_debug("INFTL: INFTL_foldchain(inftl=%p,thisVUC=%d," - "pending=%d)\n", inftl, thisVUC, pendingblock); + pr_debug("INFTL: INFTL_foldchain(inftl=%p,thisVUC=%d,pending=%d)\n", + inftl, thisVUC, pendingblock); memset(BlockMap, 0xff, sizeof(BlockMap)); memset(BlockDeleted, 0, sizeof(BlockDeleted)); @@ -321,8 +321,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned * Chain, and the Erase Unit into which we are supposed to be copying. * Go for it. */ - pr_debug("INFTL: folding chain %d into unit %d\n", - thisVUC, targetEUN); + pr_debug("INFTL: folding chain %d into unit %d\n", thisVUC, targetEUN); for (block = 0; block < inftl->EraseSize/SECTORSIZE ; block++) { unsigned char movebuf[SECTORSIZE]; @@ -353,8 +352,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned (block * SECTORSIZE), SECTORSIZE, &retlen, movebuf); if (ret != -EIO) - pr_debug("INFTL: error went " - "away on retry?\n"); + pr_debug("INFTL: error went away on retry?\n"); } memset(&oob, 0xff, sizeof(struct inftl_oob)); oob.b.Status = oob.b.Status1 = SECTOR_USED; @@ -370,8 +368,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned * is important, by doing oldest first if we crash/reboot then it * it is relatively simple to clean up the mess). */ - pr_debug("INFTL: want to erase virtual chain %d\n", - thisVUC); + pr_debug("INFTL: want to erase virtual chain %d\n", thisVUC); for (;;) { /* Find oldest unit in chain. */ @@ -482,8 +479,8 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block) size_t retlen; int silly, silly2 = 3; - pr_debug("INFTL: INFTL_findwriteunit(inftl=%p," - "block=%d)\n", inftl, block); + pr_debug("INFTL: INFTL_findwriteunit(inftl=%p,block=%d)\n", + inftl, block); do { /* @@ -499,8 +496,8 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block) blockofs, 8, &retlen, (char *)&bci); status = bci.Status | bci.Status1; - pr_debug("INFTL: status of block %d in " - "EUN %d is %x\n", block , writeEUN, status); + pr_debug("INFTL: status of block %d in EUN %d is %x\n", + block , writeEUN, status); switch(status) { case SECTOR_FREE: @@ -553,9 +550,9 @@ hitused: * Hopefully we free something, lets try again. * This time we are desperate... */ - pr_debug("INFTL: using desperate==1 " - "to find free EUN to accommodate write to " - "VUC %d\n", thisVUC); + pr_debug("INFTL: using desperate==1 to find free EUN " + "to accommodate write to VUC %d\n", + thisVUC); writeEUN = INFTL_findfreeblock(inftl, 1); if (writeEUN == BLOCK_NIL) { /* diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index d969c2d..bd82b04 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -385,8 +385,7 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block) struct mtd_info *mtd = inftl->mbd.mtd; int physblock; - pr_debug("INFTL: INFTL_formatblock(inftl=%p," - "block=%d)\n", inftl, block); + pr_debug("INFTL: INFTL_formatblock(inftl=%p,block=%d)\n", inftl, block); memset(instr, 0, sizeof(struct erase_info)); diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 2fbfb71..ebeb843 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -349,8 +349,7 @@ static void wait_op_done(struct mxc_nand_host *host, int useirq) udelay(1); } if (max_retries < 0) - pr_debug("%s: INT not set\n", - __func__); + pr_debug("%s: INT not set\n", __func__); } } @@ -386,8 +385,7 @@ static void send_cmd_v1_v2(struct mxc_nand_host *host, uint16_t cmd, int useirq) udelay(1); } if (max_retries < 0) - pr_debug("%s: RESET failed\n", - __func__); + pr_debug("%s: RESET failed\n", __func__); } else { /* Wait for operation to complete */ wait_op_done(host, useirq); diff --git a/drivers/mtd/nand/nand_bch.c b/drivers/mtd/nand/nand_bch.c index 16cca9b..3803e0b 100644 --- a/drivers/mtd/nand/nand_bch.c +++ b/drivers/mtd/nand/nand_bch.c @@ -93,8 +93,8 @@ int nand_bch_correct_data(struct mtd_info *mtd, unsigned char *buf, buf[errloc[i] >> 3] ^= (1 << (errloc[i] & 7)); /* else error in ecc, no action needed */ - pr_debug("%s: corrected bitflip %u\n", - __func__, errloc[i]); + pr_debug("%s: corrected bitflip %u\n", __func__, + errloc[i]); } } else if (count < 0) { printk(KERN_ERR "ecc unrecoverable error\n"); diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 81e6bc0..19b283f 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -763,8 +763,8 @@ static int omap_compare_ecc(u8 *ecc_data1, /* read from NAND memory */ find_bit = (ecc_bit[5] << 2) + (ecc_bit[3] << 1) + ecc_bit[1]; - pr_debug("Correcting single bit ECC error at " - "offset: %d, bit: %d\n", find_byte, find_bit); + pr_debug("Correcting single bit ECC error at offset: " + "%d, bit: %d\n", find_byte, find_bit); page_data[find_byte] ^= (1 << find_bit); diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index b07b052..de98791 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1122,8 +1122,8 @@ static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from, int ret = 0; int writesize = this->writesize; - pr_debug("%s: from = 0x%08x, len = %i\n", - __func__, (unsigned int) from, (int) len); + pr_debug("%s: from = 0x%08x, len = %i\n", __func__, (unsigned int)from, + (int)len); if (ops->mode == MTD_OOB_AUTO) oobsize = this->ecclayout->oobavail; @@ -1226,8 +1226,8 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, int ret = 0, boundary = 0; int writesize = this->writesize; - pr_debug("%s: from = 0x%08x, len = %i\n", - __func__, (unsigned int) from, (int) len); + pr_debug("%s: from = 0x%08x, len = %i\n", __func__, (unsigned int)from, + (int)len); if (ops->mode == MTD_OOB_AUTO) oobsize = this->ecclayout->oobavail; @@ -1357,8 +1357,8 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, from += ops->ooboffs; - pr_debug("%s: from = 0x%08x, len = %i\n", - __func__, (unsigned int) from, (int) len); + pr_debug("%s: from = 0x%08x, len = %i\n", __func__, (unsigned int)from, + (int)len); /* Initialize return length value */ ops->oobretlen = 0; @@ -1576,8 +1576,8 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, size_t len = ops->ooblen; u_char *buf = ops->oobbuf; - pr_debug("%s: from = 0x%08x, len = %zi\n", - __func__, (unsigned int) from, len); + pr_debug("%s: from = 0x%08x, len = %zi\n", __func__, (unsigned int)from, + len); /* Initialize return value */ ops->oobretlen = 0; @@ -1750,8 +1750,8 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len, /* Wait for any existing operation to clear */ onenand_panic_wait(mtd); - pr_debug("%s: to = 0x%08x, len = %i\n", - __func__, (unsigned int) to, (int) len); + pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int)to, + (int)len); /* Initialize retlen, in case of early exit */ *retlen = 0; @@ -1883,8 +1883,8 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, u_char *oobbuf; int ret = 0, cmd; - pr_debug("%s: to = 0x%08x, len = %i\n", - __func__, (unsigned int) to, (int) len); + pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int)to, + (int)len); /* Initialize retlen, in case of early exit */ ops->retlen = 0; @@ -2078,8 +2078,8 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, to += ops->ooboffs; - pr_debug("%s: to = 0x%08x, len = %i\n", - __func__, (unsigned int) to, (int) len); + pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int)to, + (int)len); /* Initialize retlen, in case of early exit */ ops->oobretlen = 0; @@ -2490,7 +2490,8 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) loff_t region_offset = 0; pr_debug("%s: start=0x%012llx, len=%llu\n", __func__, - (unsigned long long) instr->addr, (unsigned long long) instr->len); + (unsigned long long)instr->addr, + (unsigned long long)instr->len); /* Do not allow erase past end of device */ if (unlikely((len + addr) > mtd->size)) { -- cgit v0.10.2 From e6453521edcaa6f130946b5f4fcaf28dbc02f2ed Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:11 -0700 Subject: mtd: pcmciamtd: remove custom DEBUG() function We don't need a custom DEBUG() macro here. Just use the built-in kernel code with dynamic debugging features. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index bbe168b..afa9bd8 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -22,22 +22,6 @@ #include #include -#ifdef CONFIG_MTD_DEBUG -static int debug = CONFIG_MTD_DEBUG_VERBOSE; -module_param(debug, int, 0); -MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy"); -#undef DEBUG -#define DEBUG(n, format, arg...) \ - if (n <= debug) { \ - printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __func__ , ## arg); \ - } - -#else -#undef DEBUG -#define DEBUG(n, arg...) -static const int debug = 0; -#endif - #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg) #define DRIVER_DESC "PCMCIA Flash memory card driver" @@ -105,13 +89,13 @@ static caddr_t remap_window(struct map_info *map, unsigned long to) int ret; if (!pcmcia_dev_present(dev->p_dev)) { - DEBUG(1, "device removed"); + pr_debug("device removed\n"); return 0; } offset = to & ~(dev->win_size-1); if (offset != dev->offset) { - DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x", + pr_debug("Remapping window from 0x%8.8x to 0x%8.8x\n", dev->offset, offset); ret = pcmcia_map_mem_page(dev->p_dev, win, offset); if (ret != 0) @@ -132,7 +116,7 @@ static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs) return d; d.x[0] = readb(addr); - DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02lx", ofs, addr, d.x[0]); + pr_debug("ofs = 0x%08lx (%p) data = 0x%02lx\n", ofs, addr, d.x[0]); return d; } @@ -147,7 +131,7 @@ static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs) return d; d.x[0] = readw(addr); - DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04lx", ofs, addr, d.x[0]); + pr_debug("ofs = 0x%08lx (%p) data = 0x%04lx\n", ofs, addr, d.x[0]); return d; } @@ -157,7 +141,7 @@ static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; unsigned long win_size = dev->win_size; - DEBUG(3, "to = %p from = %lu len = %zd", to, from, len); + pr_debug("to = %p from = %lu len = %zd\n", to, from, len); while(len) { int toread = win_size - (from & (win_size-1)); caddr_t addr; @@ -169,7 +153,7 @@ static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long if(!addr) return; - DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread); + pr_debug("memcpy from %p to %p len = %d\n", addr, to, toread); memcpy_fromio(to, addr, toread); len -= toread; to += toread; @@ -185,7 +169,7 @@ static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long if(!addr) return; - DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02lx", adr, addr, d.x[0]); + pr_debug("adr = 0x%08lx (%p) data = 0x%02lx\n", adr, addr, d.x[0]); writeb(d.x[0], addr); } @@ -196,7 +180,7 @@ static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long if(!addr) return; - DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04lx", adr, addr, d.x[0]); + pr_debug("adr = 0x%08lx (%p) data = 0x%04lx\n", adr, addr, d.x[0]); writew(d.x[0], addr); } @@ -206,7 +190,7 @@ static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const v struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; unsigned long win_size = dev->win_size; - DEBUG(3, "to = %lu from = %p len = %zd", to, from, len); + pr_debug("to = %lu from = %p len = %zd\n", to, from, len); while(len) { int towrite = win_size - (to & (win_size-1)); caddr_t addr; @@ -218,7 +202,7 @@ static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const v if(!addr) return; - DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite); + pr_debug("memcpy from %p to %p len = %d\n", from, addr, towrite); memcpy_toio(addr, from, towrite); len -= towrite; to += towrite; @@ -240,7 +224,7 @@ static map_word pcmcia_read8(struct map_info *map, unsigned long ofs) return d; d.x[0] = readb(win_base + ofs); - DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02lx", + pr_debug("ofs = 0x%08lx (%p) data = 0x%02lx\n", ofs, win_base + ofs, d.x[0]); return d; } @@ -255,7 +239,7 @@ static map_word pcmcia_read16(struct map_info *map, unsigned long ofs) return d; d.x[0] = readw(win_base + ofs); - DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04lx", + pr_debug("ofs = 0x%08lx (%p) data = 0x%04lx\n", ofs, win_base + ofs, d.x[0]); return d; } @@ -268,7 +252,7 @@ static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, if(DEV_REMOVED(map)) return; - DEBUG(3, "to = %p from = %lu len = %zd", to, from, len); + pr_debug("to = %p from = %lu len = %zd\n", to, from, len); memcpy_fromio(to, win_base + from, len); } @@ -280,7 +264,7 @@ static void pcmcia_write8(struct map_info *map, map_word d, unsigned long adr) if(DEV_REMOVED(map)) return; - DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02lx", + pr_debug("adr = 0x%08lx (%p) data = 0x%02lx\n", adr, win_base + adr, d.x[0]); writeb(d.x[0], win_base + adr); } @@ -293,7 +277,7 @@ static void pcmcia_write16(struct map_info *map, map_word d, unsigned long adr) if(DEV_REMOVED(map)) return; - DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04lx", + pr_debug("adr = 0x%08lx (%p) data = 0x%04lx\n", adr, win_base + adr, d.x[0]); writew(d.x[0], win_base + adr); } @@ -306,7 +290,7 @@ static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *f if(DEV_REMOVED(map)) return; - DEBUG(3, "to = %lu from = %p len = %zd", to, from, len); + pr_debug("to = %lu from = %p len = %zd\n", to, from, len); memcpy_toio(win_base + to, from, len); } @@ -316,7 +300,7 @@ static void pcmciamtd_set_vpp(struct map_info *map, int on) struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; struct pcmcia_device *link = dev->p_dev; - DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp); + pr_debug("dev = %p on = %d vpp = %d\n\n", dev, on, dev->vpp); pcmcia_fixup_vpp(link, on ? dev->vpp : 0); } @@ -325,7 +309,7 @@ static void pcmciamtd_release(struct pcmcia_device *link) { struct pcmciamtd_dev *dev = link->priv; - DEBUG(3, "link = 0x%p", link); + pr_debug("link = 0x%p\n", link); if (link->resource[2]->end) { if(dev->win_base) { @@ -347,7 +331,7 @@ static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev, if (!pcmcia_parse_tuple(tuple, &parse)) { cistpl_format_t *t = &parse.format; (void)t; /* Shut up, gcc */ - DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u", + pr_debug("Format type: %u, Error Detection: %u, offset = %u, length =%u\n", t->type, t->edc, t->offset, t->length); } return -ENOSPC; @@ -363,7 +347,7 @@ static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev, if (!pcmcia_parse_tuple(tuple, &parse)) { cistpl_jedec_t *t = &parse.jedec; for (i = 0; i < t->nid; i++) - DEBUG(2, "JEDEC: 0x%02x 0x%02x", + pr_debug("JEDEC: 0x%02x 0x%02x\n", t->id[i].mfr, t->id[i].info); } return -ENOSPC; @@ -382,14 +366,14 @@ static int pcmciamtd_cistpl_device(struct pcmcia_device *p_dev, if (pcmcia_parse_tuple(tuple, &parse)) return -EINVAL; - DEBUG(2, "Common memory:"); + pr_debug("Common memory:\n"); dev->pcmcia_map.size = t->dev[0].size; /* from here on: DEBUG only */ for (i = 0; i < t->ndev; i++) { - DEBUG(2, "Region %d, type = %u", i, t->dev[i].type); - DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp); - DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed); - DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size); + pr_debug("Region %d, type = %u\n", i, t->dev[i].type); + pr_debug("Region %d, wp = %u\n", i, t->dev[i].wp); + pr_debug("Region %d, speed = %u ns\n", i, t->dev[i].speed); + pr_debug("Region %d, size = %u bytes\n", i, t->dev[i].size); } return 0; } @@ -409,12 +393,12 @@ static int pcmciamtd_cistpl_geo(struct pcmcia_device *p_dev, dev->pcmcia_map.bankwidth = t->geo[0].buswidth; /* from here on: DEBUG only */ for (i = 0; i < t->ngeo; i++) { - DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth); - DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block); - DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block); - DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block); - DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition); - DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave); + pr_debug("region: %d bankwidth = %u\n", i, t->geo[i].buswidth); + pr_debug("region: %d erase_block = %u\n", i, t->geo[i].erase_block); + pr_debug("region: %d read_block = %u\n", i, t->geo[i].read_block); + pr_debug("region: %d write_block = %u\n", i, t->geo[i].write_block); + pr_debug("region: %d partition = %u\n", i, t->geo[i].partition); + pr_debug("region: %d interleave = %u\n", i, t->geo[i].interleave); } return 0; } @@ -432,7 +416,7 @@ static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev if (p_dev->prod_id[i]) strcat(dev->mtd_name, p_dev->prod_id[i]); } - DEBUG(2, "Found name: %s", dev->mtd_name); + pr_debug("Found name: %s\n", dev->mtd_name); } #ifdef CONFIG_MTD_DEBUG @@ -450,12 +434,12 @@ static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev if(force_size) { dev->pcmcia_map.size = force_size << 20; - DEBUG(2, "size forced to %dM", force_size); + pr_debug("size forced to %dM\n", force_size); } if(bankwidth) { dev->pcmcia_map.bankwidth = bankwidth; - DEBUG(2, "bankwidth forced to %d", bankwidth); + pr_debug("bankwidth forced to %d\n", bankwidth); } dev->pcmcia_map.name = dev->mtd_name; @@ -464,7 +448,7 @@ static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev *new_name = 1; } - DEBUG(1, "Device: Size: %lu Width:%d Name: %s", + pr_debug("Device: Size: %lu Width:%d Name: %s\n", dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name); } @@ -479,7 +463,7 @@ static int pcmciamtd_config(struct pcmcia_device *link) static char *probes[] = { "jedec_probe", "cfi_probe" }; int new_name = 0; - DEBUG(3, "link=0x%p", link); + pr_debug("link=0x%p\n", link); card_settings(dev, link, &new_name); @@ -512,11 +496,11 @@ static int pcmciamtd_config(struct pcmcia_device *link) do { int ret; - DEBUG(2, "requesting window with size = %luKiB memspeed = %d", + pr_debug("requesting window with size = %luKiB memspeed = %d\n", (unsigned long) resource_size(link->resource[2]) >> 10, mem_speed); ret = pcmcia_request_window(link, link->resource[2], mem_speed); - DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size); + pr_debug("ret = %d dev->win_size = %d\n", ret, dev->win_size); if(ret) { j++; link->resource[2]->start = 0; @@ -524,21 +508,21 @@ static int pcmciamtd_config(struct pcmcia_device *link) force_size << 20 : MAX_PCMCIA_ADDR; link->resource[2]->end >>= j; } else { - DEBUG(2, "Got window of size %luKiB", (unsigned long) + pr_debug("Got window of size %luKiB\n", (unsigned long) resource_size(link->resource[2]) >> 10); dev->win_size = resource_size(link->resource[2]); break; } } while (link->resource[2]->end >= 0x1000); - DEBUG(2, "dev->win_size = %d", dev->win_size); + pr_debug("dev->win_size = %d\n", dev->win_size); if(!dev->win_size) { dev_err(&dev->p_dev->dev, "Cannot allocate memory window\n"); pcmciamtd_release(link); return -ENODEV; } - DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10); + pr_debug("Allocated a window of %dKiB\n", dev->win_size >> 10); /* Get write protect status */ dev->win_base = ioremap(link->resource[2]->start, @@ -549,7 +533,7 @@ static int pcmciamtd_config(struct pcmcia_device *link) pcmciamtd_release(link); return -ENODEV; } - DEBUG(1, "mapped window dev = %p @ %pR, base = %p", + pr_debug("mapped window dev = %p @ %pR, base = %p\n", dev, link->resource[2], dev->win_base); dev->offset = 0; @@ -564,7 +548,7 @@ static int pcmciamtd_config(struct pcmcia_device *link) } link->config_index = 0; - DEBUG(2, "Setting Configuration"); + pr_debug("Setting Configuration\n"); ret = pcmcia_enable_device(link); if (ret != 0) { if (dev->win_base) { @@ -580,17 +564,17 @@ static int pcmciamtd_config(struct pcmcia_device *link) mtd = do_map_probe("map_rom", &dev->pcmcia_map); } else { for(i = 0; i < ARRAY_SIZE(probes); i++) { - DEBUG(1, "Trying %s", probes[i]); + pr_debug("Trying %s\n", probes[i]); mtd = do_map_probe(probes[i], &dev->pcmcia_map); if(mtd) break; - DEBUG(1, "FAILED: %s", probes[i]); + pr_debug("FAILED: %s\n", probes[i]); } } if(!mtd) { - DEBUG(1, "Can not find an MTD"); + pr_debug("Can not find an MTD\n"); pcmciamtd_release(link); return -ENODEV; } @@ -617,7 +601,7 @@ static int pcmciamtd_config(struct pcmcia_device *link) /* If the memory found is fits completely into the mapped PCMCIA window, use the faster non-remapping read/write functions */ if(mtd->size <= dev->win_size) { - DEBUG(1, "Using non remapping memory functions"); + pr_debug("Using non remapping memory functions\n"); dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base; if (dev->pcmcia_map.bankwidth == 1) { dev->pcmcia_map.read = pcmcia_read8; @@ -645,7 +629,7 @@ static int pcmciamtd_config(struct pcmcia_device *link) static int pcmciamtd_suspend(struct pcmcia_device *dev) { - DEBUG(2, "EVENT_PM_RESUME"); + pr_debug("EVENT_PM_RESUME\n"); /* get_lock(link); */ @@ -654,7 +638,7 @@ static int pcmciamtd_suspend(struct pcmcia_device *dev) static int pcmciamtd_resume(struct pcmcia_device *dev) { - DEBUG(2, "EVENT_PM_SUSPEND"); + pr_debug("EVENT_PM_SUSPEND\n"); /* free_lock(link); */ @@ -666,7 +650,7 @@ static void pcmciamtd_detach(struct pcmcia_device *link) { struct pcmciamtd_dev *dev = link->priv; - DEBUG(3, "link=0x%p", link); + pr_debug("link=0x%p\n", link); if(dev->mtd_info) { mtd_device_unregister(dev->mtd_info); @@ -686,7 +670,7 @@ static int pcmciamtd_probe(struct pcmcia_device *link) /* Create new memory card device */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; - DEBUG(1, "dev=0x%p", dev); + pr_debug("dev=0x%p\n", dev); dev->p_dev = link; link->priv = dev; @@ -755,7 +739,7 @@ static int __init init_pcmciamtd(void) static void __exit exit_pcmciamtd(void) { - DEBUG(1, DRIVER_DESC " unloading"); + pr_debug(DRIVER_DESC " unloading"); pcmcia_unregister_driver(&pcmciamtd_driver); } -- cgit v0.10.2 From 87ed114bb22bc65fce59c709e67599c1940efc7f Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:12 -0700 Subject: mtd: remove CONFIG_MTD_DEBUG Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index cc02e21..4925aa9 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -12,19 +12,6 @@ menuconfig MTD if MTD -config MTD_DEBUG - bool "Debugging" - help - This turns on low-level debugging for the entire MTD sub-system. - Normally, you should say 'N'. - -config MTD_DEBUG_VERBOSE - int "Debugging verbosity (0 = quiet, 3 = noisy)" - depends on MTD_DEBUG - default "0" - help - Determines the verbosity level of the MTD debugging messages. - config MTD_TESTS tristate "MTD tests support" depends on m diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 62d56f9..68ea229 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -360,27 +360,4 @@ void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size); void mtd_erase_callback(struct erase_info *instr); -/* - * Debugging macro and defines - */ -#define MTD_DEBUG_LEVEL0 (0) /* Quiet */ -#define MTD_DEBUG_LEVEL1 (1) /* Audible */ -#define MTD_DEBUG_LEVEL2 (2) /* Loud */ -#define MTD_DEBUG_LEVEL3 (3) /* Noisy */ - -#ifdef CONFIG_MTD_DEBUG -#define DEBUG(n, args...) \ - do { \ - if (n <= CONFIG_MTD_DEBUG_VERBOSE) \ - printk(KERN_INFO args); \ - } while(0) -#else /* CONFIG_MTD_DEBUG */ -#define DEBUG(n, args...) \ - do { \ - if (0) \ - printk(KERN_INFO args); \ - } while(0) - -#endif /* CONFIG_MTD_DEBUG */ - #endif /* __MTD_MTD_H__ */ -- cgit v0.10.2 From 278981c541b706a5b4b802890020689cd6ee7781 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:13 -0700 Subject: mtd: cleanup last uses of MTD_DEBUG config macros Some messages that were tied to CONFIG_MTD_DEBUG_VERBOSE can now simply be enabled using dynamic debugging features, if necessary. There's no need for special debugging functions here. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index bd82b04..d19898c 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -139,24 +139,20 @@ static int find_boot_record(struct INFTLrecord *inftl) mh->FormatFlags = le32_to_cpu(mh->FormatFlags); mh->PercentUsed = le32_to_cpu(mh->PercentUsed); -#ifdef CONFIG_MTD_DEBUG_VERBOSE - if (CONFIG_MTD_DEBUG_VERBOSE >= 2) { - printk("INFTL: Media Header ->\n" - " bootRecordID = %s\n" - " NoOfBootImageBlocks = %d\n" - " NoOfBinaryPartitions = %d\n" - " NoOfBDTLPartitions = %d\n" - " BlockMultiplerBits = %d\n" - " FormatFlgs = %d\n" - " OsakVersion = 0x%x\n" - " PercentUsed = %d\n", - mh->bootRecordID, mh->NoOfBootImageBlocks, - mh->NoOfBinaryPartitions, - mh->NoOfBDTLPartitions, - mh->BlockMultiplierBits, mh->FormatFlags, - mh->OsakVersion, mh->PercentUsed); - } -#endif + pr_debug("INFTL: Media Header ->\n" + " bootRecordID = %s\n" + " NoOfBootImageBlocks = %d\n" + " NoOfBinaryPartitions = %d\n" + " NoOfBDTLPartitions = %d\n" + " BlockMultiplerBits = %d\n" + " FormatFlgs = %d\n" + " OsakVersion = 0x%x\n" + " PercentUsed = %d\n", + mh->bootRecordID, mh->NoOfBootImageBlocks, + mh->NoOfBinaryPartitions, + mh->NoOfBDTLPartitions, + mh->BlockMultiplierBits, mh->FormatFlags, + mh->OsakVersion, mh->PercentUsed); if (mh->NoOfBDTLPartitions == 0) { printk(KERN_WARNING "INFTL: Media Header sanity check " @@ -200,19 +196,15 @@ static int find_boot_record(struct INFTLrecord *inftl) ip->spareUnits = le32_to_cpu(ip->spareUnits); ip->Reserved0 = le32_to_cpu(ip->Reserved0); -#ifdef CONFIG_MTD_DEBUG_VERBOSE - if (CONFIG_MTD_DEBUG_VERBOSE >= 2) { - printk(" PARTITION[%d] ->\n" - " virtualUnits = %d\n" - " firstUnit = %d\n" - " lastUnit = %d\n" - " flags = 0x%x\n" - " spareUnits = %d\n", - i, ip->virtualUnits, ip->firstUnit, - ip->lastUnit, ip->flags, - ip->spareUnits); - } -#endif + pr_debug(" PARTITION[%d] ->\n" + " virtualUnits = %d\n" + " firstUnit = %d\n" + " lastUnit = %d\n" + " flags = 0x%x\n" + " spareUnits = %d\n", + i, ip->virtualUnits, ip->firstUnit, + ip->lastUnit, ip->flags, + ip->spareUnits); if (ip->Reserved0 != ip->firstUnit) { struct erase_info *instr = &inftl->instr; @@ -475,30 +467,30 @@ void INFTL_dumptables(struct INFTLrecord *s) { int i; - printk("-------------------------------------------" + pr_debug("-------------------------------------------" "----------------------------------\n"); - printk("VUtable[%d] ->", s->nb_blocks); + pr_debug("VUtable[%d] ->", s->nb_blocks); for (i = 0; i < s->nb_blocks; i++) { if ((i % 8) == 0) - printk("\n%04x: ", i); - printk("%04x ", s->VUtable[i]); + pr_debug("\n%04x: ", i); + pr_debug("%04x ", s->VUtable[i]); } - printk("\n-------------------------------------------" + pr_debug("\n-------------------------------------------" "----------------------------------\n"); - printk("PUtable[%d-%d=%d] ->", s->firstEUN, s->lastEUN, s->nb_blocks); + pr_debug("PUtable[%d-%d=%d] ->", s->firstEUN, s->lastEUN, s->nb_blocks); for (i = 0; i <= s->lastEUN; i++) { if ((i % 8) == 0) - printk("\n%04x: ", i); - printk("%04x ", s->PUtable[i]); + pr_debug("\n%04x: ", i); + pr_debug("%04x ", s->PUtable[i]); } - printk("\n-------------------------------------------" + pr_debug("\n-------------------------------------------" "----------------------------------\n"); - printk("INFTL ->\n" + pr_debug("INFTL ->\n" " EraseSize = %d\n" " h/s/c = %d/%d/%d\n" " numvunits = %d\n" @@ -512,7 +504,7 @@ void INFTL_dumptables(struct INFTLrecord *s) s->numvunits, s->firstEUN, s->lastEUN, s->numfreeEUNs, s->LastFreeEUN, s->nb_blocks, s->nb_boot_blocks); - printk("\n-------------------------------------------" + pr_debug("\n-------------------------------------------" "----------------------------------\n"); } @@ -520,25 +512,25 @@ void INFTL_dumpVUchains(struct INFTLrecord *s) { int logical, block, i; - printk("-------------------------------------------" + pr_debug("-------------------------------------------" "----------------------------------\n"); - printk("INFTL Virtual Unit Chains:\n"); + pr_debug("INFTL Virtual Unit Chains:\n"); for (logical = 0; logical < s->nb_blocks; logical++) { block = s->VUtable[logical]; if (block > s->nb_blocks) continue; - printk(" LOGICAL %d --> %d ", logical, block); + pr_debug(" LOGICAL %d --> %d ", logical, block); for (i = 0; i < s->nb_blocks; i++) { if (s->PUtable[block] == BLOCK_NIL) break; block = s->PUtable[block]; - printk("%d ", block); + pr_debug("%d ", block); } - printk("\n"); + pr_debug("\n"); } - printk("-------------------------------------------" + pr_debug("-------------------------------------------" "----------------------------------\n"); } @@ -716,10 +708,7 @@ int INFTL_mount(struct INFTLrecord *s) logical_block = BLOCK_NIL; } -#ifdef CONFIG_MTD_DEBUG_VERBOSE - if (CONFIG_MTD_DEBUG_VERBOSE >= 2) - INFTL_dumptables(s); -#endif + INFTL_dumptables(s); /* * Second pass, check for infinite loops in chains. These are @@ -771,12 +760,8 @@ int INFTL_mount(struct INFTLrecord *s) } } -#ifdef CONFIG_MTD_DEBUG_VERBOSE - if (CONFIG_MTD_DEBUG_VERBOSE >= 2) - INFTL_dumptables(s); - if (CONFIG_MTD_DEBUG_VERBOSE >= 2) - INFTL_dumpVUchains(s); -#endif + INFTL_dumptables(s); + INFTL_dumpVUchains(s); /* * Third pass, format unreferenced blocks and init free block count. diff --git a/drivers/mtd/maps/pcmciamtd.c b/drivers/mtd/maps/pcmciamtd.c index afa9bd8..e8e9fec 100644 --- a/drivers/mtd/maps/pcmciamtd.c +++ b/drivers/mtd/maps/pcmciamtd.c @@ -321,7 +321,6 @@ static void pcmciamtd_release(struct pcmcia_device *link) } -#ifdef CONFIG_MTD_DEBUG static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev, tuple_t *tuple, void *priv_data) @@ -352,7 +351,6 @@ static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev, } return -ENOSPC; } -#endif static int pcmciamtd_cistpl_device(struct pcmcia_device *p_dev, tuple_t *tuple, @@ -419,10 +417,8 @@ static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev pr_debug("Found name: %s\n", dev->mtd_name); } -#ifdef CONFIG_MTD_DEBUG pcmcia_loop_tuple(p_dev, CISTPL_FORMAT, pcmciamtd_cistpl_format, NULL); pcmcia_loop_tuple(p_dev, CISTPL_JEDEC_C, pcmciamtd_cistpl_jedec, NULL); -#endif pcmcia_loop_tuple(p_dev, CISTPL_DEVICE, pcmciamtd_cistpl_device, dev); pcmcia_loop_tuple(p_dev, CISTPL_DEVICE_GEO, pcmciamtd_cistpl_geo, dev); -- cgit v0.10.2 From 022bba8a301c4218c358e949af339e55e3540d9c Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 19 Jul 2011 10:06:16 -0700 Subject: mtd: Kbuild: remove reference to MTD_PARTITIONS Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 891a9e6..1b0d56c 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -254,7 +254,6 @@ config MTD_BCM963XX config MTD_LANTIQ tristate "Lantiq SoC NOR support" depends on LANTIQ - select MTD_PARTITIONS help Support for NOR flash attached to the Lantiq SoC's External Bus Unit. -- cgit v0.10.2 From 46a00d83ffb0d040f18068234e0eda8332c1e798 Mon Sep 17 00:00:00 2001 From: Jan Weitzel Date: Wed, 20 Jul 2011 09:28:04 +0200 Subject: mtd: use MTD_NAND_OMAP2 for OMAP4 use MTD_NAND_OMAP2 also for OMAP4 arch. testes with omap4430 Signed-off-by: Jan Weitzel Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 17235d0..7ec5b49 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -109,10 +109,11 @@ config MTD_NAND_AMS_DELTA Support for NAND flash on Amstrad E3 (Delta). config MTD_NAND_OMAP2 - tristate "NAND Flash device on OMAP2 and OMAP3" - depends on ARM && (ARCH_OMAP2 || ARCH_OMAP3) + tristate "NAND Flash device on OMAP2, OMAP3 and OMAP4" + depends on ARM && (ARCH_OMAP2 || ARCH_OMAP3 || ARCH_OMAP4) help - Support for NAND flash on Texas Instruments OMAP2 and OMAP3 platforms. + Support for NAND flash on Texas Instruments OMAP2, OMAP3 and OMAP4 + platforms. config MTD_NAND_IDS tristate -- cgit v0.10.2 From 92394b5c2be774425f255b5c7afbd8b19978fe12 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 20 Jul 2011 09:53:42 -0700 Subject: mtd: spelling fixes Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c index 95d7768..c7382bb 100644 --- a/drivers/mtd/ftl.c +++ b/drivers/mtd/ftl.c @@ -598,7 +598,7 @@ static int copy_erase_unit(partition_t *part, uint16_t srcunit, unit with the fewest erases, and usually pick the data unit with the most deleted blocks. But with a small probability, pick the oldest data unit instead. This means that we generally postpone - the next reclaimation as long as possible, but shuffle static + the next reclamation as long as possible, but shuffle static stuff around a bit for wear leveling. ======================================================================*/ diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index d19898c..2ff601f 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -367,7 +367,7 @@ static int check_free_sectors(struct INFTLrecord *inftl, unsigned int address, * * Return: 0 when succeed, -1 on error. * - * ToDo: 1. Is it neceressary to check_free_sector after erasing ?? + * ToDo: 1. Is it necessary to check_free_sector after erasing ?? */ int INFTL_formatblock(struct INFTLrecord *inftl, int block) { diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 22526e9..a75d555 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -43,7 +43,7 @@ static struct vfsmount *mtd_inode_mnt __read_mostly; /* * Data structure to hold the pointer to the mtd device as well - * as mode information ofr various use cases. + * as mode information of various use cases. */ struct mtd_file_info { struct mtd_info *mtd; @@ -495,7 +495,7 @@ static int mtd_do_readoob(struct mtd_info *mtd, uint64_t start, /* * Copies (and truncates, if necessary) data from the larger struct, * nand_ecclayout, to the smaller, deprecated layout struct, - * nand_ecclayout_user. This is necessary only to suppport the deprecated + * nand_ecclayout_user. This is necessary only to support the deprecated * API ioctl ECCGETLAYOUT while allowing all new functionality to use * nand_ecclayout flexibly (i.e. the struct may change size in new * releases without requiring major rewrites). diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index e601672..d3fabd1 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -770,7 +770,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c /* * Set up the new "super" device's MTD object structure, check for - * incompatibilites between the subdevices. + * incompatibilities between the subdevices. */ concat->mtd.type = subdev[0]->type; concat->mtd.flags = subdev[0]->flags; diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 887aed0..09bdbac 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -449,7 +449,7 @@ out_error: * is used, see 'parse_mtd_partitions()' for more information). If none are * found this functions tries to fallback to information specified in * @parts/@nr_parts. - * * If any parititioning info was found, this function registers the found + * * If any partitioning info was found, this function registers the found * partitions. * * If no partitions were found this function just registers the MTD device * @mtd and exits. diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index 5e5423b..9961063 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -86,7 +86,7 @@ struct swap_eb { unsigned int flags; unsigned int active_count; unsigned int erase_count; - unsigned int pad; /* speeds up pointer decremtnt */ + unsigned int pad; /* speeds up pointer decrement */ }; #define MTDSWAP_ECNT_MIN(rbroot) (rb_entry(rb_first(rbroot), struct swap_eb, \ diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c index e3cd1ff..ac40925 100644 --- a/drivers/mtd/nftlmount.c +++ b/drivers/mtd/nftlmount.c @@ -32,7 +32,7 @@ /* find_boot_record: Find the NFTL Media Header and its Spare copy which contains the * various device information of the NFTL partition and Bad Unit Table. Update - * the ReplUnitTable[] table accroding to the Bad Unit Table. ReplUnitTable[] + * the ReplUnitTable[] table according to the Bad Unit Table. ReplUnitTable[] * is used for management of Erase Unit in other routines in nftl.c and nftlmount.c */ static int find_boot_record(struct NFTLrecord *nftl) @@ -297,7 +297,7 @@ static int check_free_sectors(struct NFTLrecord *nftl, unsigned int address, int * * Return: 0 when succeed, -1 on error. * - * ToDo: 1. Is it neceressary to check_free_sector after erasing ?? + * ToDo: 1. Is it necessary to check_free_sector after erasing ?? */ int NFTL_formatblock(struct NFTLrecord *nftl, int block) { @@ -337,7 +337,7 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block) nb_erases = le32_to_cpu(uci.WearInfo); nb_erases++; - /* wrap (almost impossible with current flashs) or free block */ + /* wrap (almost impossible with current flash) or free block */ if (nb_erases == 0) nb_erases = 1; @@ -363,10 +363,10 @@ fail: * Mark as 'IGNORE' each incorrect sector. This check is only done if the chain * was being folded when NFTL was interrupted. * - * The check_free_sectors in this function is neceressary. There is a possible + * The check_free_sectors in this function is necessary. There is a possible * situation that after writing the Data area, the Block Control Information is * not updated according (due to power failure or something) which leaves the block - * in an umconsistent state. So we have to check if a block is really FREE in this + * in an inconsistent state. So we have to check if a block is really FREE in this * case. */ static void check_sectors_in_chain(struct NFTLrecord *nftl, unsigned int first_block) { @@ -428,7 +428,7 @@ static int calc_chain_length(struct NFTLrecord *nftl, unsigned int first_block) for (;;) { length++; - /* avoid infinite loops, although this is guaranted not to + /* avoid infinite loops, although this is guaranteed not to happen because of the previous checks */ if (length >= nftl->nb_blocks) { printk("nftl: length too long %d !\n", length); @@ -447,11 +447,11 @@ static int calc_chain_length(struct NFTLrecord *nftl, unsigned int first_block) /* format_chain: Format an invalid Virtual Unit chain. It frees all the Erase Units in a * Virtual Unit Chain, i.e. all the units are disconnected. * - * It is not stricly correct to begin from the first block of the chain because + * It is not strictly correct to begin from the first block of the chain because * if we stop the code, we may see again a valid chain if there was a first_block * flag in a block inside it. But is it really a problem ? * - * FixMe: Figure out what the last statesment means. What if power failure when we are + * FixMe: Figure out what the last statement means. What if power failure when we are * in the for (;;) loop formatting blocks ?? */ static void format_chain(struct NFTLrecord *nftl, unsigned int first_block) @@ -485,7 +485,7 @@ static void format_chain(struct NFTLrecord *nftl, unsigned int first_block) * totally free (only 0xff). * * Definition: Free Erase Unit -- A properly erased/formatted Free Erase Unit should have meet the - * following critia: + * following criteria: * 1. */ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block) { @@ -502,7 +502,7 @@ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block) erase_mark = le16_to_cpu ((h1.EraseMark | h1.EraseMark1)); if (erase_mark != ERASE_MARK) { /* if no erase mark, the block must be totally free. This is - possible in two cases : empty filsystem or interrupted erase (very unlikely) */ + possible in two cases : empty filesystem or interrupted erase (very unlikely) */ if (check_free_sectors (nftl, block * nftl->EraseSize, nftl->EraseSize, 1) != 0) return -1; @@ -544,7 +544,7 @@ static int check_and_mark_free_block(struct NFTLrecord *nftl, int block) /* get_fold_mark: Read fold mark from Unit Control Information #2, we use FOLD_MARK_IN_PROGRESS * to indicate that we are in the progression of a Virtual Unit Chain folding. If the UCI #2 * is FOLD_MARK_IN_PROGRESS when mounting the NFTL, the (previous) folding process is interrupted - * for some reason. A clean up/check of the VUC is neceressary in this case. + * for some reason. A clean up/check of the VUC is necessary in this case. * * WARNING: return 0 if read error */ @@ -657,7 +657,7 @@ int NFTL_mount(struct NFTLrecord *s) printk("Block %d: incorrect logical block: %d expected: %d\n", block, logical_block, first_logical_block); /* the chain is incorrect : we must format it, - but we need to read it completly */ + but we need to read it completely */ do_format_chain = 1; } if (is_first_block) { @@ -669,7 +669,7 @@ int NFTL_mount(struct NFTLrecord *s) printk("Block %d: incorrectly marked as first block in chain\n", block); /* the chain is incorrect : we must format it, - but we need to read it completly */ + but we need to read it completely */ do_format_chain = 1; } else { printk("Block %d: folding in progress - ignoring first block flag\n", diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index a8befde..311a9e3 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -34,7 +34,7 @@ module_param(debug, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(debug, "Debug level (0-2)"); -/* ------------------- sysfs attributtes ---------------------------------- */ +/* ------------------- sysfs attributes ---------------------------------- */ struct sm_sysfs_attribute { struct device_attribute dev_attr; char *data; @@ -147,7 +147,7 @@ static int sm_get_lba(uint8_t *lba) /* - * Read LBA asscociated with block + * Read LBA associated with block * returns -1, if block is erased * returns -2 if error happens */ @@ -252,7 +252,7 @@ static int sm_read_sector(struct sm_ftl *ftl, return 0; } - /* User might not need the oob, but we do for data vertification */ + /* User might not need the oob, but we do for data verification */ if (!oob) oob = &tmp_oob; @@ -276,7 +276,7 @@ again: return ret; } - /* Unfortunelly, oob read will _always_ succeed, + /* Unfortunately, oob read will _always_ succeed, despite card removal..... */ ret = mtd->read_oob(mtd, sm_mkoffset(ftl, zone, block, boffset), &ops); @@ -447,14 +447,14 @@ static void sm_mark_block_bad(struct sm_ftl *ftl, int zone, int block) /* We aren't checking the return value, because we don't care */ /* This also fails on fake xD cards, but I guess these won't expose - any bad blocks till fail completly */ + any bad blocks till fail completely */ for (boffset = 0; boffset < ftl->block_size; boffset += SM_SECTOR_SIZE) sm_write_sector(ftl, zone, block, boffset, NULL, &oob); } /* * Erase a block within a zone - * If erase succedes, it updates free block fifo, otherwise marks block as bad + * If erase succeeds, it updates free block fifo, otherwise marks block as bad */ static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block, int put_free) @@ -510,7 +510,7 @@ static void sm_erase_callback(struct erase_info *self) complete(&ftl->erase_completion); } -/* Throughtly test that block is valid. */ +/* Thoroughly test that block is valid. */ static int sm_check_block(struct sm_ftl *ftl, int zone, int block) { int boffset; @@ -526,7 +526,7 @@ static int sm_check_block(struct sm_ftl *ftl, int zone, int block) for (boffset = 0; boffset < ftl->block_size; boffset += SM_SECTOR_SIZE) { - /* This shoudn't happen anyway */ + /* This shouldn't happen anyway */ if (sm_read_sector(ftl, zone, block, boffset, NULL, &oob)) return -2; -- cgit v0.10.2 From 4aa10626adbc27dcf2e3462bb82b4963c5545669 Mon Sep 17 00:00:00 2001 From: Jonghwan Choi Date: Thu, 21 Jul 2011 15:33:58 +0900 Subject: mtd: s3c2410 nand: Remove uncessary null check clk_get() return a pointer to the struct clk or an ERR_PTR(). Signed-off-by: Jonghwan Choi Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index b0f8e77..868685d 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -723,7 +723,7 @@ static int s3c24xx_nand_remove(struct platform_device *pdev) /* free the common resources */ - if (info->clk != NULL && !IS_ERR(info->clk)) { + if (!IS_ERR(info->clk)) { s3c2410_nand_clk_set_state(info, CLOCK_DISABLE); clk_put(info->clk); } -- cgit v0.10.2 From f975c6bcb07caacff7fa9904e5d2daa51bcf549d Mon Sep 17 00:00:00 2001 From: Michael Hench Date: Tue, 26 Jul 2011 15:07:42 -0500 Subject: mtd: eLBC NAND: update ecc_stats.corrected when lteccr available Signed-off-by: Michael Hench Acked-by: Scott Wood Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index acc27ee..eedd8ee 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -243,6 +243,25 @@ static int fsl_elbc_run_command(struct mtd_info *mtd) return -EIO; } + if (chip->ecc.mode != NAND_ECC_HW) + return 0; + + if (elbc_fcm_ctrl->read_bytes == mtd->writesize + mtd->oobsize) { + uint32_t lteccr = in_be32(&lbc->lteccr); + /* + * if command was a full page read and the ELBC + * has the LTECCR register, then bits 12-15 (ppc order) of + * LTECCR indicates which 512 byte sub-pages had fixed errors. + * bits 28-31 are uncorrectable errors, marked elsewhere. + * for small page nand only 1 bit is used. + * if the ELBC doesn't have the lteccr register it reads 0 + */ + if (lteccr & 0x000F000F) + out_be32(&lbc->lteccr, 0x000F000F); /* clear lteccr */ + if (lteccr & 0x000F0000) + mtd->ecc_stats.corrected++; + } + return 0; } -- cgit v0.10.2 From 38ca6ebc72d59c0c4f52d443c69fc4a17765666a Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Wed, 10 Aug 2011 10:14:14 +0200 Subject: mtd: bcm_umi_nand: clean up error handling code Convert error handling code to use gotos. At the same time, this adds calls to kfree and iounmap in a few cases where they were overlooked. Signed-off-by: Julia Lawall Acked-by: Jiandong Zheng Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c index a8ae898..46b58d6 100644 --- a/drivers/mtd/nand/bcm_umi_nand.c +++ b/drivers/mtd/nand/bcm_umi_nand.c @@ -374,16 +374,18 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!r) - return -ENXIO; + if (!r) { + err = -ENXIO; + goto out_free; + } /* map physical address */ bcm_umi_io_base = ioremap(r->start, resource_size(r)); if (!bcm_umi_io_base) { printk(KERN_ERR "ioremap to access BCM UMI NAND chip failed\n"); - kfree(board_mtd); - return -EIO; + err = -EIO; + goto out_free; } /* Get pointer to private data */ @@ -399,9 +401,8 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) /* Initialize the NAND hardware. */ if (bcm_umi_nand_inithw() < 0) { printk(KERN_ERR "BCM UMI NAND chip could not be initialized\n"); - iounmap(bcm_umi_io_base); - kfree(board_mtd); - return -EIO; + err = -EIO; + goto out_unmap; } /* Set address of NAND IO lines */ @@ -434,7 +435,7 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) #if USE_DMA err = nand_dma_init(); if (err != 0) - return err; + goto out_unmap; #endif /* Figure out the size of the device that we have. @@ -445,9 +446,7 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) err = nand_scan_ident(board_mtd, 1, NULL); if (err) { printk(KERN_ERR "nand_scan failed: %d\n", err); - iounmap(bcm_umi_io_base); - kfree(board_mtd); - return err; + goto out_unmap; } /* Now that we know the nand size, we can setup the ECC layout */ @@ -466,7 +465,8 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) { printk(KERN_ERR "NAND - Unrecognized pagesize: %d\n", board_mtd->writesize); - return -EINVAL; + err = -EINVAL; + goto out_unmap; } } @@ -483,9 +483,7 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) err = nand_scan_tail(board_mtd); if (err) { printk(KERN_ERR "nand_scan failed: %d\n", err); - iounmap(bcm_umi_io_base); - kfree(board_mtd); - return err; + goto out_unmap; } /* Register the partitions */ @@ -494,6 +492,11 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev) /* Return happy */ return 0; +out_unmap: + iounmap(bcm_umi_io_base); +out_free: + kfree(board_mtd); + return err; } static int bcm_umi_nand_remove(struct platform_device *pdev) -- cgit v0.10.2 From c97926dd8d7cc094830b253afc817cbf406c0de7 Mon Sep 17 00:00:00 2001 From: Jason Liu Date: Mon, 22 Aug 2011 14:13:17 +0800 Subject: mtd: mxc_nand: add mx53 NFC driver support This has already been tested with Samsung NAND: K9LAG08U0M on MX53EVK board, ubi/ubifs has already been tested OK too. Signed-off-by: Jason Liu Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index ebeb843..4d4c677 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -41,7 +41,7 @@ #define nfc_is_v21() (cpu_is_mx25() || cpu_is_mx35()) #define nfc_is_v1() (cpu_is_mx31() || cpu_is_mx27() || cpu_is_mx21()) -#define nfc_is_v3_2() cpu_is_mx51() +#define nfc_is_v3_2() (cpu_is_mx51() || cpu_is_mx53()) #define nfc_is_v3() nfc_is_v3_2() /* Addresses for NFC registers */ -- cgit v0.10.2 From 305b93f180b221789a6213bf3d298c6735102da1 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 23 Aug 2011 17:17:32 -0700 Subject: mtd: do not assume oobsize is power of 2 Previous generations of MTDs all used OOB sizes that were powers of 2, (e.g., 64, 128). However, newer generations of flash, especially NAND, use irregular OOB sizes that are not powers of 2 (e.g., 218, 224, 448). This means we cannot use masks like "mtd->oobsize - 1" to assume that we will get a proper bitmask for OOB operations. These masks are really only intended to hide the "page" portion of the offset, leaving any OOB offset intact, so a masking with the writesize (which *is* always a power of 2) is valid and makes more sense. This has been tested for read/write of NAND devices (nanddump/nandwrite) using nandsim and actual NAND flash. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index a75d555..b206254 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -410,7 +410,7 @@ static int mtd_do_writeoob(struct file *file, struct mtd_info *mtd, return ret; ops.ooblen = length; - ops.ooboffs = start & (mtd->oobsize - 1); + ops.ooboffs = start & (mtd->writesize - 1); ops.datbuf = NULL; ops.mode = MTD_OOB_PLACE; @@ -421,7 +421,7 @@ static int mtd_do_writeoob(struct file *file, struct mtd_info *mtd, if (IS_ERR(ops.oobbuf)) return PTR_ERR(ops.oobbuf); - start &= ~((uint64_t)mtd->oobsize - 1); + start &= ~((uint64_t)mtd->writesize - 1); ret = mtd->write_oob(mtd, start, &ops); if (ops.oobretlen > 0xFFFFFFFFU) @@ -452,7 +452,7 @@ static int mtd_do_readoob(struct mtd_info *mtd, uint64_t start, return ret; ops.ooblen = length; - ops.ooboffs = start & (mtd->oobsize - 1); + ops.ooboffs = start & (mtd->writesize - 1); ops.datbuf = NULL; ops.mode = MTD_OOB_PLACE; @@ -463,7 +463,7 @@ static int mtd_do_readoob(struct mtd_info *mtd, uint64_t start, if (!ops.oobbuf) return -ENOMEM; - start &= ~((uint64_t)mtd->oobsize - 1); + start &= ~((uint64_t)mtd->writesize - 1); ret = mtd->read_oob(mtd, start, &ops); if (put_user(ops.oobretlen, retp)) -- cgit v0.10.2 From 48ee688df09fa3ddf86b5b53508316d18d6fcedd Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 23 Aug 2011 17:17:33 -0700 Subject: mtd: doc: remove mention of MEMSETOOBSEL It's been gone for a while. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl index 8c07540..0c674be 100644 --- a/Documentation/DocBook/mtdnand.tmpl +++ b/Documentation/DocBook/mtdnand.tmpl @@ -773,20 +773,6 @@ struct nand_oobinfo { done according to the default builtin scheme. - - User space placement selection - - All non ecc functions like mtd->read and mtd->write use an internal - structure, which can be set by an ioctl. This structure is preset - to the autoplacement default. - - ioctl (fd, MEMSETOOBSEL, oobsel); - - oobsel is a pointer to a user supplied structure of type - nand_oobconfig. The contents of this structure must match the - criteria of the filesystem, which will be used. See an example in utils/nandwrite.c. - - Spare area autoplacement default schemes -- cgit v0.10.2 From 93fad71c206ca4672360edaf918727b2b64f8ad1 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 23 Aug 2011 17:17:34 -0700 Subject: mtd: remove MEMSETOOBSEL macro definition MEMSETOOBSEL is completely unused and useless. Remove the definition. Note: it's probably best not to use this ioctl number in the future for MTD, since that may cause conflicts between old kernels and new user software (or new kernels and old user software). Artem: leave a comment about MEMSETOOBSEL. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h index 2f7d45b..3bdda5c 100644 --- a/include/mtd/mtd-abi.h +++ b/include/mtd/mtd-abi.h @@ -104,6 +104,12 @@ struct otp_info { __u32 locked; }; +/* + * Note, the following ioctl existed in the past and was removed: + * #define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo) + * Try to avoid adding a new ioctl with the same ioctl number. + */ + #define MEMGETINFO _IOR('M', 1, struct mtd_info_user) #define MEMERASE _IOW('M', 2, struct erase_info_user) #define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf) @@ -112,7 +118,6 @@ struct otp_info { #define MEMUNLOCK _IOW('M', 6, struct erase_info_user) #define MEMGETREGIONCOUNT _IOR('M', 7, int) #define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user) -#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo) #define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo) #define MEMGETBADBLOCK _IOW('M', 11, __kernel_loff_t) #define MEMSETBADBLOCK _IOW('M', 12, __kernel_loff_t) -- cgit v0.10.2 From 32c8db8f622a4cb8ea9d571d462580f7137babbb Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 23 Aug 2011 17:17:35 -0700 Subject: mtd: nand: fix spelling error (date => data) Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 6d56968..85fef68 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -465,7 +465,7 @@ struct nand_buffers { * @controller: [REPLACEABLE] a pointer to a hardware controller * structure which is shared among multiple independent * devices. - * @priv: [OPTIONAL] pointer to private chip date + * @priv: [OPTIONAL] pointer to private chip data * @errstat: [OPTIONAL] hardware specific function to perform * additional error status checks (determine if errors are * correctable). -- cgit v0.10.2 From e2e24e8ebf0e96571fbbac95c215df6a2cebbc5b Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 23 Aug 2011 17:17:36 -0700 Subject: mtd: style fixups in multi-line comment, indentation Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 68ea229..ff7bae0 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -33,17 +33,19 @@ #define MTD_CHAR_MAJOR 90 #define MTD_BLOCK_MAJOR 31 -#define MTD_ERASE_PENDING 0x01 +#define MTD_ERASE_PENDING 0x01 #define MTD_ERASING 0x02 #define MTD_ERASE_SUSPEND 0x04 -#define MTD_ERASE_DONE 0x08 -#define MTD_ERASE_FAILED 0x10 +#define MTD_ERASE_DONE 0x08 +#define MTD_ERASE_FAILED 0x10 #define MTD_FAIL_ADDR_UNKNOWN -1LL -/* If the erase fails, fail_addr might indicate exactly which block failed. If - fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level or was not - specific to any particular block. */ +/* + * If the erase fails, fail_addr might indicate exactly which block failed. If + * fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level + * or was not specific to any particular block. + */ struct erase_info { struct mtd_info *mtd; uint64_t addr; @@ -60,7 +62,7 @@ struct erase_info { }; struct mtd_erase_region_info { - uint64_t offset; /* At which this region starts, from the beginning of the MTD */ + uint64_t offset; /* At which this region starts, from the beginning of the MTD */ uint32_t erasesize; /* For this region */ uint32_t numblocks; /* Number of blocks of erasesize in this region */ unsigned long *lockmap; /* If keeping bitmap of locks */ -- cgit v0.10.2 From 4d523b60ef9d1953d9e12745ca0ed3e2dc98c189 Mon Sep 17 00:00:00 2001 From: Jason Liu Date: Wed, 24 Aug 2011 19:26:28 +0800 Subject: mtd: check parts pointer before using it The code has the check for parts but it called after kmemdup, kmemdup(parts, sizeof(*parts) * nr_parts,...) if (!parts) return -ENOMEM In fact, we need check parts before safely using it. and we also need check the real_parts to make sure kmemdup allocation sucessfully. Signed-off-by: Jason Liu Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 09bdbac..b01993e 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -465,12 +465,13 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char **types, struct mtd_partition *real_parts; err = parse_mtd_partitions(mtd, types, &real_parts, parser_data); - if (err <= 0 && nr_parts) { + if (err <= 0 && nr_parts && parts) { real_parts = kmemdup(parts, sizeof(*parts) * nr_parts, GFP_KERNEL); - err = nr_parts; - if (!parts) + if (!real_parts) err = -ENOMEM; + else + err = nr_parts; } if (err > 0) { -- cgit v0.10.2 From 45dfc1a09a35963234a50617c0700f7eb2b3b9c2 Mon Sep 17 00:00:00 2001 From: Huang Shijie Date: Thu, 8 Sep 2011 10:47:10 +0800 Subject: mtd: add helper functions library and header files for GPMI NAND driver bch-regs.h : registers file for BCH module gpmi-regs.h: registers file for GPMI module gpmi-lib.c: helper functions library. Signed-off-by: Huang Shijie Acked-by: Marek Vasut Tested-by: Koen Beel Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/gpmi-nand/bch-regs.h b/drivers/mtd/nand/gpmi-nand/bch-regs.h new file mode 100644 index 0000000..4effb8c --- /dev/null +++ b/drivers/mtd/nand/gpmi-nand/bch-regs.h @@ -0,0 +1,84 @@ +/* + * Freescale GPMI NAND Flash Driver + * + * Copyright 2008-2011 Freescale Semiconductor, Inc. + * Copyright 2008 Embedded Alley Solutions, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#ifndef __GPMI_NAND_BCH_REGS_H +#define __GPMI_NAND_BCH_REGS_H + +#define HW_BCH_CTRL 0x00000000 +#define HW_BCH_CTRL_SET 0x00000004 +#define HW_BCH_CTRL_CLR 0x00000008 +#define HW_BCH_CTRL_TOG 0x0000000c + +#define BM_BCH_CTRL_COMPLETE_IRQ_EN (1 << 8) +#define BM_BCH_CTRL_COMPLETE_IRQ (1 << 0) + +#define HW_BCH_STATUS0 0x00000010 +#define HW_BCH_MODE 0x00000020 +#define HW_BCH_ENCODEPTR 0x00000030 +#define HW_BCH_DATAPTR 0x00000040 +#define HW_BCH_METAPTR 0x00000050 +#define HW_BCH_LAYOUTSELECT 0x00000070 + +#define HW_BCH_FLASH0LAYOUT0 0x00000080 + +#define BP_BCH_FLASH0LAYOUT0_NBLOCKS 24 +#define BM_BCH_FLASH0LAYOUT0_NBLOCKS (0xff << BP_BCH_FLASH0LAYOUT0_NBLOCKS) +#define BF_BCH_FLASH0LAYOUT0_NBLOCKS(v) \ + (((v) << BP_BCH_FLASH0LAYOUT0_NBLOCKS) & BM_BCH_FLASH0LAYOUT0_NBLOCKS) + +#define BP_BCH_FLASH0LAYOUT0_META_SIZE 16 +#define BM_BCH_FLASH0LAYOUT0_META_SIZE (0xff << BP_BCH_FLASH0LAYOUT0_META_SIZE) +#define BF_BCH_FLASH0LAYOUT0_META_SIZE(v) \ + (((v) << BP_BCH_FLASH0LAYOUT0_META_SIZE)\ + & BM_BCH_FLASH0LAYOUT0_META_SIZE) + +#define BP_BCH_FLASH0LAYOUT0_ECC0 12 +#define BM_BCH_FLASH0LAYOUT0_ECC0 (0xf << BP_BCH_FLASH0LAYOUT0_ECC0) +#define BF_BCH_FLASH0LAYOUT0_ECC0(v) \ + (((v) << BP_BCH_FLASH0LAYOUT0_ECC0) & BM_BCH_FLASH0LAYOUT0_ECC0) + +#define BP_BCH_FLASH0LAYOUT0_DATA0_SIZE 0 +#define BM_BCH_FLASH0LAYOUT0_DATA0_SIZE \ + (0xfff << BP_BCH_FLASH0LAYOUT0_DATA0_SIZE) +#define BF_BCH_FLASH0LAYOUT0_DATA0_SIZE(v) \ + (((v) << BP_BCH_FLASH0LAYOUT0_DATA0_SIZE)\ + & BM_BCH_FLASH0LAYOUT0_DATA0_SIZE) + +#define HW_BCH_FLASH0LAYOUT1 0x00000090 + +#define BP_BCH_FLASH0LAYOUT1_PAGE_SIZE 16 +#define BM_BCH_FLASH0LAYOUT1_PAGE_SIZE \ + (0xffff << BP_BCH_FLASH0LAYOUT1_PAGE_SIZE) +#define BF_BCH_FLASH0LAYOUT1_PAGE_SIZE(v) \ + (((v) << BP_BCH_FLASH0LAYOUT1_PAGE_SIZE) \ + & BM_BCH_FLASH0LAYOUT1_PAGE_SIZE) + +#define BP_BCH_FLASH0LAYOUT1_ECCN 12 +#define BM_BCH_FLASH0LAYOUT1_ECCN (0xf << BP_BCH_FLASH0LAYOUT1_ECCN) +#define BF_BCH_FLASH0LAYOUT1_ECCN(v) \ + (((v) << BP_BCH_FLASH0LAYOUT1_ECCN) & BM_BCH_FLASH0LAYOUT1_ECCN) + +#define BP_BCH_FLASH0LAYOUT1_DATAN_SIZE 0 +#define BM_BCH_FLASH0LAYOUT1_DATAN_SIZE \ + (0xfff << BP_BCH_FLASH0LAYOUT1_DATAN_SIZE) +#define BF_BCH_FLASH0LAYOUT1_DATAN_SIZE(v) \ + (((v) << BP_BCH_FLASH0LAYOUT1_DATAN_SIZE) \ + & BM_BCH_FLASH0LAYOUT1_DATAN_SIZE) +#endif diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c new file mode 100644 index 0000000..de4db76 --- /dev/null +++ b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c @@ -0,0 +1,1057 @@ +/* + * Freescale GPMI NAND Flash Driver + * + * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. + * Copyright (C) 2008 Embedded Alley Solutions, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#include +#include +#include +#include + +#include "gpmi-nand.h" +#include "gpmi-regs.h" +#include "bch-regs.h" + +struct timing_threshod timing_default_threshold = { + .max_data_setup_cycles = (BM_GPMI_TIMING0_DATA_SETUP >> + BP_GPMI_TIMING0_DATA_SETUP), + .internal_data_setup_in_ns = 0, + .max_sample_delay_factor = (BM_GPMI_CTRL1_RDN_DELAY >> + BP_GPMI_CTRL1_RDN_DELAY), + .max_dll_clock_period_in_ns = 32, + .max_dll_delay_in_ns = 16, +}; + +/* + * Clear the bit and poll it cleared. This is usually called with + * a reset address and mask being either SFTRST(bit 31) or CLKGATE + * (bit 30). + */ +static int clear_poll_bit(void __iomem *addr, u32 mask) +{ + int timeout = 0x400; + + /* clear the bit */ + __mxs_clrl(mask, addr); + + /* + * SFTRST needs 3 GPMI clocks to settle, the reference manual + * recommends to wait 1us. + */ + udelay(1); + + /* poll the bit becoming clear */ + while ((readl(addr) & mask) && --timeout) + /* nothing */; + + return !timeout; +} + +#define MODULE_CLKGATE (1 << 30) +#define MODULE_SFTRST (1 << 31) +/* + * The current mxs_reset_block() will do two things: + * [1] enable the module. + * [2] reset the module. + * + * In most of the cases, it's ok. But there is a hardware bug in the BCH block. + * If you try to soft reset the BCH block, it becomes unusable until + * the next hard reset. This case occurs in the NAND boot mode. When the board + * boots by NAND, the ROM of the chip will initialize the BCH blocks itself. + * So If the driver tries to reset the BCH again, the BCH will not work anymore. + * You will see a DMA timeout in this case. + * + * To avoid this bug, just add a new parameter `just_enable` for + * the mxs_reset_block(), and rewrite it here. + */ +int gpmi_reset_block(void __iomem *reset_addr, bool just_enable) +{ + int ret; + int timeout = 0x400; + + /* clear and poll SFTRST */ + ret = clear_poll_bit(reset_addr, MODULE_SFTRST); + if (unlikely(ret)) + goto error; + + /* clear CLKGATE */ + __mxs_clrl(MODULE_CLKGATE, reset_addr); + + if (!just_enable) { + /* set SFTRST to reset the block */ + __mxs_setl(MODULE_SFTRST, reset_addr); + udelay(1); + + /* poll CLKGATE becoming set */ + while ((!(readl(reset_addr) & MODULE_CLKGATE)) && --timeout) + /* nothing */; + if (unlikely(!timeout)) + goto error; + } + + /* clear and poll SFTRST */ + ret = clear_poll_bit(reset_addr, MODULE_SFTRST); + if (unlikely(ret)) + goto error; + + /* clear and poll CLKGATE */ + ret = clear_poll_bit(reset_addr, MODULE_CLKGATE); + if (unlikely(ret)) + goto error; + + return 0; + +error: + pr_err("%s(%p): module reset timeout\n", __func__, reset_addr); + return -ETIMEDOUT; +} + +int gpmi_init(struct gpmi_nand_data *this) +{ + struct resources *r = &this->resources; + int ret; + + ret = clk_enable(r->clock); + if (ret) + goto err_out; + ret = gpmi_reset_block(r->gpmi_regs, false); + if (ret) + goto err_out; + + /* Choose NAND mode. */ + writel(BM_GPMI_CTRL1_GPMI_MODE, r->gpmi_regs + HW_GPMI_CTRL1_CLR); + + /* Set the IRQ polarity. */ + writel(BM_GPMI_CTRL1_ATA_IRQRDY_POLARITY, + r->gpmi_regs + HW_GPMI_CTRL1_SET); + + /* Disable Write-Protection. */ + writel(BM_GPMI_CTRL1_DEV_RESET, r->gpmi_regs + HW_GPMI_CTRL1_SET); + + /* Select BCH ECC. */ + writel(BM_GPMI_CTRL1_BCH_MODE, r->gpmi_regs + HW_GPMI_CTRL1_SET); + + clk_disable(r->clock); + return 0; +err_out: + return ret; +} + +/* This function is very useful. It is called only when the bug occur. */ +void gpmi_dump_info(struct gpmi_nand_data *this) +{ + struct resources *r = &this->resources; + struct bch_geometry *geo = &this->bch_geometry; + u32 reg; + int i; + + pr_err("Show GPMI registers :\n"); + for (i = 0; i <= HW_GPMI_DEBUG / 0x10 + 1; i++) { + reg = readl(r->gpmi_regs + i * 0x10); + pr_err("offset 0x%.3x : 0x%.8x\n", i * 0x10, reg); + } + + /* start to print out the BCH info */ + pr_err("BCH Geometry :\n"); + pr_err("GF length : %u\n", geo->gf_len); + pr_err("ECC Strength : %u\n", geo->ecc_strength); + pr_err("Page Size in Bytes : %u\n", geo->page_size); + pr_err("Metadata Size in Bytes : %u\n", geo->metadata_size); + pr_err("ECC Chunk Size in Bytes: %u\n", geo->ecc_chunk_size); + pr_err("ECC Chunk Count : %u\n", geo->ecc_chunk_count); + pr_err("Payload Size in Bytes : %u\n", geo->payload_size); + pr_err("Auxiliary Size in Bytes: %u\n", geo->auxiliary_size); + pr_err("Auxiliary Status Offset: %u\n", geo->auxiliary_status_offset); + pr_err("Block Mark Byte Offset : %u\n", geo->block_mark_byte_offset); + pr_err("Block Mark Bit Offset : %u\n", geo->block_mark_bit_offset); +} + +/* Configures the geometry for BCH. */ +int bch_set_geometry(struct gpmi_nand_data *this) +{ + struct resources *r = &this->resources; + struct bch_geometry *bch_geo = &this->bch_geometry; + unsigned int block_count; + unsigned int block_size; + unsigned int metadata_size; + unsigned int ecc_strength; + unsigned int page_size; + int ret; + + if (common_nfc_set_geometry(this)) + return !0; + + block_count = bch_geo->ecc_chunk_count - 1; + block_size = bch_geo->ecc_chunk_size; + metadata_size = bch_geo->metadata_size; + ecc_strength = bch_geo->ecc_strength >> 1; + page_size = bch_geo->page_size; + + ret = clk_enable(r->clock); + if (ret) + goto err_out; + + ret = gpmi_reset_block(r->bch_regs, true); + if (ret) + goto err_out; + + /* Configure layout 0. */ + writel(BF_BCH_FLASH0LAYOUT0_NBLOCKS(block_count) + | BF_BCH_FLASH0LAYOUT0_META_SIZE(metadata_size) + | BF_BCH_FLASH0LAYOUT0_ECC0(ecc_strength) + | BF_BCH_FLASH0LAYOUT0_DATA0_SIZE(block_size), + r->bch_regs + HW_BCH_FLASH0LAYOUT0); + + writel(BF_BCH_FLASH0LAYOUT1_PAGE_SIZE(page_size) + | BF_BCH_FLASH0LAYOUT1_ECCN(ecc_strength) + | BF_BCH_FLASH0LAYOUT1_DATAN_SIZE(block_size), + r->bch_regs + HW_BCH_FLASH0LAYOUT1); + + /* Set *all* chip selects to use layout 0. */ + writel(0, r->bch_regs + HW_BCH_LAYOUTSELECT); + + /* Enable interrupts. */ + writel(BM_BCH_CTRL_COMPLETE_IRQ_EN, + r->bch_regs + HW_BCH_CTRL_SET); + + clk_disable(r->clock); + return 0; +err_out: + return ret; +} + +/* Converts time in nanoseconds to cycles. */ +static unsigned int ns_to_cycles(unsigned int time, + unsigned int period, unsigned int min) +{ + unsigned int k; + + k = (time + period - 1) / period; + return max(k, min); +} + +/* Apply timing to current hardware conditions. */ +static int gpmi_nfc_compute_hardware_timing(struct gpmi_nand_data *this, + struct gpmi_nfc_hardware_timing *hw) +{ + struct gpmi_nand_platform_data *pdata = this->pdata; + struct timing_threshod *nfc = &timing_default_threshold; + struct nand_chip *nand = &this->nand; + struct nand_timing target = this->timing; + bool improved_timing_is_available; + unsigned long clock_frequency_in_hz; + unsigned int clock_period_in_ns; + bool dll_use_half_periods; + unsigned int dll_delay_shift; + unsigned int max_sample_delay_in_ns; + unsigned int address_setup_in_cycles; + unsigned int data_setup_in_ns; + unsigned int data_setup_in_cycles; + unsigned int data_hold_in_cycles; + int ideal_sample_delay_in_ns; + unsigned int sample_delay_factor; + int tEYE; + unsigned int min_prop_delay_in_ns = pdata->min_prop_delay_in_ns; + unsigned int max_prop_delay_in_ns = pdata->max_prop_delay_in_ns; + + /* + * If there are multiple chips, we need to relax the timings to allow + * for signal distortion due to higher capacitance. + */ + if (nand->numchips > 2) { + target.data_setup_in_ns += 10; + target.data_hold_in_ns += 10; + target.address_setup_in_ns += 10; + } else if (nand->numchips > 1) { + target.data_setup_in_ns += 5; + target.data_hold_in_ns += 5; + target.address_setup_in_ns += 5; + } + + /* Check if improved timing information is available. */ + improved_timing_is_available = + (target.tREA_in_ns >= 0) && + (target.tRLOH_in_ns >= 0) && + (target.tRHOH_in_ns >= 0) ; + + /* Inspect the clock. */ + clock_frequency_in_hz = nfc->clock_frequency_in_hz; + clock_period_in_ns = 1000000000 / clock_frequency_in_hz; + + /* + * The NFC quantizes setup and hold parameters in terms of clock cycles. + * Here, we quantize the setup and hold timing parameters to the + * next-highest clock period to make sure we apply at least the + * specified times. + * + * For data setup and data hold, the hardware interprets a value of zero + * as the largest possible delay. This is not what's intended by a zero + * in the input parameter, so we impose a minimum of one cycle. + */ + data_setup_in_cycles = ns_to_cycles(target.data_setup_in_ns, + clock_period_in_ns, 1); + data_hold_in_cycles = ns_to_cycles(target.data_hold_in_ns, + clock_period_in_ns, 1); + address_setup_in_cycles = ns_to_cycles(target.address_setup_in_ns, + clock_period_in_ns, 0); + + /* + * The clock's period affects the sample delay in a number of ways: + * + * (1) The NFC HAL tells us the maximum clock period the sample delay + * DLL can tolerate. If the clock period is greater than half that + * maximum, we must configure the DLL to be driven by half periods. + * + * (2) We need to convert from an ideal sample delay, in ns, to a + * "sample delay factor," which the NFC uses. This factor depends on + * whether we're driving the DLL with full or half periods. + * Paraphrasing the reference manual: + * + * AD = SDF x 0.125 x RP + * + * where: + * + * AD is the applied delay, in ns. + * SDF is the sample delay factor, which is dimensionless. + * RP is the reference period, in ns, which is a full clock period + * if the DLL is being driven by full periods, or half that if + * the DLL is being driven by half periods. + * + * Let's re-arrange this in a way that's more useful to us: + * + * 8 + * SDF = AD x ---- + * RP + * + * The reference period is either the clock period or half that, so this + * is: + * + * 8 AD x DDF + * SDF = AD x ----- = -------- + * f x P P + * + * where: + * + * f is 1 or 1/2, depending on how we're driving the DLL. + * P is the clock period. + * DDF is the DLL Delay Factor, a dimensionless value that + * incorporates all the constants in the conversion. + * + * DDF will be either 8 or 16, both of which are powers of two. We can + * reduce the cost of this conversion by using bit shifts instead of + * multiplication or division. Thus: + * + * AD << DDS + * SDF = --------- + * P + * + * or + * + * AD = (SDF >> DDS) x P + * + * where: + * + * DDS is the DLL Delay Shift, the logarithm to base 2 of the DDF. + */ + if (clock_period_in_ns > (nfc->max_dll_clock_period_in_ns >> 1)) { + dll_use_half_periods = true; + dll_delay_shift = 3 + 1; + } else { + dll_use_half_periods = false; + dll_delay_shift = 3; + } + + /* + * Compute the maximum sample delay the NFC allows, under current + * conditions. If the clock is running too slowly, no sample delay is + * possible. + */ + if (clock_period_in_ns > nfc->max_dll_clock_period_in_ns) + max_sample_delay_in_ns = 0; + else { + /* + * Compute the delay implied by the largest sample delay factor + * the NFC allows. + */ + max_sample_delay_in_ns = + (nfc->max_sample_delay_factor * clock_period_in_ns) >> + dll_delay_shift; + + /* + * Check if the implied sample delay larger than the NFC + * actually allows. + */ + if (max_sample_delay_in_ns > nfc->max_dll_delay_in_ns) + max_sample_delay_in_ns = nfc->max_dll_delay_in_ns; + } + + /* + * Check if improved timing information is available. If not, we have to + * use a less-sophisticated algorithm. + */ + if (!improved_timing_is_available) { + /* + * Fold the read setup time required by the NFC into the ideal + * sample delay. + */ + ideal_sample_delay_in_ns = target.gpmi_sample_delay_in_ns + + nfc->internal_data_setup_in_ns; + + /* + * The ideal sample delay may be greater than the maximum + * allowed by the NFC. If so, we can trade off sample delay time + * for more data setup time. + * + * In each iteration of the following loop, we add a cycle to + * the data setup time and subtract a corresponding amount from + * the sample delay until we've satisified the constraints or + * can't do any better. + */ + while ((ideal_sample_delay_in_ns > max_sample_delay_in_ns) && + (data_setup_in_cycles < nfc->max_data_setup_cycles)) { + + data_setup_in_cycles++; + ideal_sample_delay_in_ns -= clock_period_in_ns; + + if (ideal_sample_delay_in_ns < 0) + ideal_sample_delay_in_ns = 0; + + } + + /* + * Compute the sample delay factor that corresponds most closely + * to the ideal sample delay. If the result is too large for the + * NFC, use the maximum value. + * + * Notice that we use the ns_to_cycles function to compute the + * sample delay factor. We do this because the form of the + * computation is the same as that for calculating cycles. + */ + sample_delay_factor = + ns_to_cycles( + ideal_sample_delay_in_ns << dll_delay_shift, + clock_period_in_ns, 0); + + if (sample_delay_factor > nfc->max_sample_delay_factor) + sample_delay_factor = nfc->max_sample_delay_factor; + + /* Skip to the part where we return our results. */ + goto return_results; + } + + /* + * If control arrives here, we have more detailed timing information, + * so we can use a better algorithm. + */ + + /* + * Fold the read setup time required by the NFC into the maximum + * propagation delay. + */ + max_prop_delay_in_ns += nfc->internal_data_setup_in_ns; + + /* + * Earlier, we computed the number of clock cycles required to satisfy + * the data setup time. Now, we need to know the actual nanoseconds. + */ + data_setup_in_ns = clock_period_in_ns * data_setup_in_cycles; + + /* + * Compute tEYE, the width of the data eye when reading from the NAND + * Flash. The eye width is fundamentally determined by the data setup + * time, perturbed by propagation delays and some characteristics of the + * NAND Flash device. + * + * start of the eye = max_prop_delay + tREA + * end of the eye = min_prop_delay + tRHOH + data_setup + */ + tEYE = (int)min_prop_delay_in_ns + (int)target.tRHOH_in_ns + + (int)data_setup_in_ns; + + tEYE -= (int)max_prop_delay_in_ns + (int)target.tREA_in_ns; + + /* + * The eye must be open. If it's not, we can try to open it by + * increasing its main forcer, the data setup time. + * + * In each iteration of the following loop, we increase the data setup + * time by a single clock cycle. We do this until either the eye is + * open or we run into NFC limits. + */ + while ((tEYE <= 0) && + (data_setup_in_cycles < nfc->max_data_setup_cycles)) { + /* Give a cycle to data setup. */ + data_setup_in_cycles++; + /* Synchronize the data setup time with the cycles. */ + data_setup_in_ns += clock_period_in_ns; + /* Adjust tEYE accordingly. */ + tEYE += clock_period_in_ns; + } + + /* + * When control arrives here, the eye is open. The ideal time to sample + * the data is in the center of the eye: + * + * end of the eye + start of the eye + * --------------------------------- - data_setup + * 2 + * + * After some algebra, this simplifies to the code immediately below. + */ + ideal_sample_delay_in_ns = + ((int)max_prop_delay_in_ns + + (int)target.tREA_in_ns + + (int)min_prop_delay_in_ns + + (int)target.tRHOH_in_ns - + (int)data_setup_in_ns) >> 1; + + /* + * The following figure illustrates some aspects of a NAND Flash read: + * + * + * __ _____________________________________ + * RDN \_________________/ + * + * <---- tEYE -----> + * /-----------------\ + * Read Data ----------------------------< >--------- + * \-----------------/ + * ^ ^ ^ ^ + * | | | | + * |<--Data Setup -->|<--Delay Time -->| | + * | | | | + * | | | + * | |<-- Quantized Delay Time -->| + * | | | + * + * + * We have some issues we must now address: + * + * (1) The *ideal* sample delay time must not be negative. If it is, we + * jam it to zero. + * + * (2) The *ideal* sample delay time must not be greater than that + * allowed by the NFC. If it is, we can increase the data setup + * time, which will reduce the delay between the end of the data + * setup and the center of the eye. It will also make the eye + * larger, which might help with the next issue... + * + * (3) The *quantized* sample delay time must not fall either before the + * eye opens or after it closes (the latter is the problem + * illustrated in the above figure). + */ + + /* Jam a negative ideal sample delay to zero. */ + if (ideal_sample_delay_in_ns < 0) + ideal_sample_delay_in_ns = 0; + + /* + * Extend the data setup as needed to reduce the ideal sample delay + * below the maximum permitted by the NFC. + */ + while ((ideal_sample_delay_in_ns > max_sample_delay_in_ns) && + (data_setup_in_cycles < nfc->max_data_setup_cycles)) { + + /* Give a cycle to data setup. */ + data_setup_in_cycles++; + /* Synchronize the data setup time with the cycles. */ + data_setup_in_ns += clock_period_in_ns; + /* Adjust tEYE accordingly. */ + tEYE += clock_period_in_ns; + + /* + * Decrease the ideal sample delay by one half cycle, to keep it + * in the middle of the eye. + */ + ideal_sample_delay_in_ns -= (clock_period_in_ns >> 1); + + /* Jam a negative ideal sample delay to zero. */ + if (ideal_sample_delay_in_ns < 0) + ideal_sample_delay_in_ns = 0; + } + + /* + * Compute the sample delay factor that corresponds to the ideal sample + * delay. If the result is too large, then use the maximum allowed + * value. + * + * Notice that we use the ns_to_cycles function to compute the sample + * delay factor. We do this because the form of the computation is the + * same as that for calculating cycles. + */ + sample_delay_factor = + ns_to_cycles(ideal_sample_delay_in_ns << dll_delay_shift, + clock_period_in_ns, 0); + + if (sample_delay_factor > nfc->max_sample_delay_factor) + sample_delay_factor = nfc->max_sample_delay_factor; + + /* + * These macros conveniently encapsulate a computation we'll use to + * continuously evaluate whether or not the data sample delay is inside + * the eye. + */ + #define IDEAL_DELAY ((int) ideal_sample_delay_in_ns) + + #define QUANTIZED_DELAY \ + ((int) ((sample_delay_factor * clock_period_in_ns) >> \ + dll_delay_shift)) + + #define DELAY_ERROR (abs(QUANTIZED_DELAY - IDEAL_DELAY)) + + #define SAMPLE_IS_NOT_WITHIN_THE_EYE (DELAY_ERROR > (tEYE >> 1)) + + /* + * While the quantized sample time falls outside the eye, reduce the + * sample delay or extend the data setup to move the sampling point back + * toward the eye. Do not allow the number of data setup cycles to + * exceed the maximum allowed by the NFC. + */ + while (SAMPLE_IS_NOT_WITHIN_THE_EYE && + (data_setup_in_cycles < nfc->max_data_setup_cycles)) { + /* + * If control arrives here, the quantized sample delay falls + * outside the eye. Check if it's before the eye opens, or after + * the eye closes. + */ + if (QUANTIZED_DELAY > IDEAL_DELAY) { + /* + * If control arrives here, the quantized sample delay + * falls after the eye closes. Decrease the quantized + * delay time and then go back to re-evaluate. + */ + if (sample_delay_factor != 0) + sample_delay_factor--; + continue; + } + + /* + * If control arrives here, the quantized sample delay falls + * before the eye opens. Shift the sample point by increasing + * data setup time. This will also make the eye larger. + */ + + /* Give a cycle to data setup. */ + data_setup_in_cycles++; + /* Synchronize the data setup time with the cycles. */ + data_setup_in_ns += clock_period_in_ns; + /* Adjust tEYE accordingly. */ + tEYE += clock_period_in_ns; + + /* + * Decrease the ideal sample delay by one half cycle, to keep it + * in the middle of the eye. + */ + ideal_sample_delay_in_ns -= (clock_period_in_ns >> 1); + + /* ...and one less period for the delay time. */ + ideal_sample_delay_in_ns -= clock_period_in_ns; + + /* Jam a negative ideal sample delay to zero. */ + if (ideal_sample_delay_in_ns < 0) + ideal_sample_delay_in_ns = 0; + + /* + * We have a new ideal sample delay, so re-compute the quantized + * delay. + */ + sample_delay_factor = + ns_to_cycles( + ideal_sample_delay_in_ns << dll_delay_shift, + clock_period_in_ns, 0); + + if (sample_delay_factor > nfc->max_sample_delay_factor) + sample_delay_factor = nfc->max_sample_delay_factor; + } + + /* Control arrives here when we're ready to return our results. */ +return_results: + hw->data_setup_in_cycles = data_setup_in_cycles; + hw->data_hold_in_cycles = data_hold_in_cycles; + hw->address_setup_in_cycles = address_setup_in_cycles; + hw->use_half_periods = dll_use_half_periods; + hw->sample_delay_factor = sample_delay_factor; + + /* Return success. */ + return 0; +} + +/* Begin the I/O */ +void gpmi_begin(struct gpmi_nand_data *this) +{ + struct resources *r = &this->resources; + struct timing_threshod *nfc = &timing_default_threshold; + unsigned char *gpmi_regs = r->gpmi_regs; + unsigned int clock_period_in_ns; + uint32_t reg; + unsigned int dll_wait_time_in_us; + struct gpmi_nfc_hardware_timing hw; + int ret; + + /* Enable the clock. */ + ret = clk_enable(r->clock); + if (ret) { + pr_err("We failed in enable the clk\n"); + goto err_out; + } + + /* set ready/busy timeout */ + writel(0x500 << BP_GPMI_TIMING1_BUSY_TIMEOUT, + gpmi_regs + HW_GPMI_TIMING1); + + /* Get the timing information we need. */ + nfc->clock_frequency_in_hz = clk_get_rate(r->clock); + clock_period_in_ns = 1000000000 / nfc->clock_frequency_in_hz; + + gpmi_nfc_compute_hardware_timing(this, &hw); + + /* Set up all the simple timing parameters. */ + reg = BF_GPMI_TIMING0_ADDRESS_SETUP(hw.address_setup_in_cycles) | + BF_GPMI_TIMING0_DATA_HOLD(hw.data_hold_in_cycles) | + BF_GPMI_TIMING0_DATA_SETUP(hw.data_setup_in_cycles) ; + + writel(reg, gpmi_regs + HW_GPMI_TIMING0); + + /* + * DLL_ENABLE must be set to 0 when setting RDN_DELAY or HALF_PERIOD. + */ + writel(BM_GPMI_CTRL1_DLL_ENABLE, gpmi_regs + HW_GPMI_CTRL1_CLR); + + /* Clear out the DLL control fields. */ + writel(BM_GPMI_CTRL1_RDN_DELAY, gpmi_regs + HW_GPMI_CTRL1_CLR); + writel(BM_GPMI_CTRL1_HALF_PERIOD, gpmi_regs + HW_GPMI_CTRL1_CLR); + + /* If no sample delay is called for, return immediately. */ + if (!hw.sample_delay_factor) + return; + + /* Configure the HALF_PERIOD flag. */ + if (hw.use_half_periods) + writel(BM_GPMI_CTRL1_HALF_PERIOD, + gpmi_regs + HW_GPMI_CTRL1_SET); + + /* Set the delay factor. */ + writel(BF_GPMI_CTRL1_RDN_DELAY(hw.sample_delay_factor), + gpmi_regs + HW_GPMI_CTRL1_SET); + + /* Enable the DLL. */ + writel(BM_GPMI_CTRL1_DLL_ENABLE, gpmi_regs + HW_GPMI_CTRL1_SET); + + /* + * After we enable the GPMI DLL, we have to wait 64 clock cycles before + * we can use the GPMI. + * + * Calculate the amount of time we need to wait, in microseconds. + */ + dll_wait_time_in_us = (clock_period_in_ns * 64) / 1000; + + if (!dll_wait_time_in_us) + dll_wait_time_in_us = 1; + + /* Wait for the DLL to settle. */ + udelay(dll_wait_time_in_us); + +err_out: + return; +} + +void gpmi_end(struct gpmi_nand_data *this) +{ + struct resources *r = &this->resources; + clk_disable(r->clock); +} + +/* Clears a BCH interrupt. */ +void gpmi_clear_bch(struct gpmi_nand_data *this) +{ + struct resources *r = &this->resources; + writel(BM_BCH_CTRL_COMPLETE_IRQ, r->bch_regs + HW_BCH_CTRL_CLR); +} + +/* Returns the Ready/Busy status of the given chip. */ +int gpmi_is_ready(struct gpmi_nand_data *this, unsigned chip) +{ + struct resources *r = &this->resources; + uint32_t mask = 0; + uint32_t reg = 0; + + if (GPMI_IS_MX23(this)) { + mask = MX23_BM_GPMI_DEBUG_READY0 << chip; + reg = readl(r->gpmi_regs + HW_GPMI_DEBUG); + } else if (GPMI_IS_MX28(this)) { + mask = MX28_BF_GPMI_STAT_READY_BUSY(1 << chip); + reg = readl(r->gpmi_regs + HW_GPMI_STAT); + } else + pr_err("unknow arch.\n"); + return reg & mask; +} + +static inline void set_dma_type(struct gpmi_nand_data *this, + enum dma_ops_type type) +{ + this->last_dma_type = this->dma_type; + this->dma_type = type; +} + +int gpmi_send_command(struct gpmi_nand_data *this) +{ + struct dma_chan *channel = get_dma_chan(this); + struct dma_async_tx_descriptor *desc; + struct scatterlist *sgl; + int chip = this->current_chip; + u32 pio[3]; + + /* [1] send out the PIO words */ + pio[0] = BF_GPMI_CTRL0_COMMAND_MODE(BV_GPMI_CTRL0_COMMAND_MODE__WRITE) + | BM_GPMI_CTRL0_WORD_LENGTH + | BF_GPMI_CTRL0_CS(chip, this) + | BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this) + | BF_GPMI_CTRL0_ADDRESS(BV_GPMI_CTRL0_ADDRESS__NAND_CLE) + | BM_GPMI_CTRL0_ADDRESS_INCREMENT + | BF_GPMI_CTRL0_XFER_COUNT(this->command_length); + pio[1] = pio[2] = 0; + desc = channel->device->device_prep_slave_sg(channel, + (struct scatterlist *)pio, + ARRAY_SIZE(pio), DMA_NONE, 0); + if (!desc) { + pr_err("step 1 error\n"); + return -1; + } + + /* [2] send out the COMMAND + ADDRESS string stored in @buffer */ + sgl = &this->cmd_sgl; + + sg_init_one(sgl, this->cmd_buffer, this->command_length); + dma_map_sg(this->dev, sgl, 1, DMA_TO_DEVICE); + desc = channel->device->device_prep_slave_sg(channel, + sgl, 1, DMA_TO_DEVICE, 1); + if (!desc) { + pr_err("step 2 error\n"); + return -1; + } + + /* [3] submit the DMA */ + set_dma_type(this, DMA_FOR_COMMAND); + return start_dma_without_bch_irq(this, desc); +} + +int gpmi_send_data(struct gpmi_nand_data *this) +{ + struct dma_async_tx_descriptor *desc; + struct dma_chan *channel = get_dma_chan(this); + int chip = this->current_chip; + uint32_t command_mode; + uint32_t address; + u32 pio[2]; + + /* [1] PIO */ + command_mode = BV_GPMI_CTRL0_COMMAND_MODE__WRITE; + address = BV_GPMI_CTRL0_ADDRESS__NAND_DATA; + + pio[0] = BF_GPMI_CTRL0_COMMAND_MODE(command_mode) + | BM_GPMI_CTRL0_WORD_LENGTH + | BF_GPMI_CTRL0_CS(chip, this) + | BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this) + | BF_GPMI_CTRL0_ADDRESS(address) + | BF_GPMI_CTRL0_XFER_COUNT(this->upper_len); + pio[1] = 0; + desc = channel->device->device_prep_slave_sg(channel, + (struct scatterlist *)pio, + ARRAY_SIZE(pio), DMA_NONE, 0); + if (!desc) { + pr_err("step 1 error\n"); + return -1; + } + + /* [2] send DMA request */ + prepare_data_dma(this, DMA_TO_DEVICE); + desc = channel->device->device_prep_slave_sg(channel, &this->data_sgl, + 1, DMA_TO_DEVICE, 1); + if (!desc) { + pr_err("step 2 error\n"); + return -1; + } + /* [3] submit the DMA */ + set_dma_type(this, DMA_FOR_WRITE_DATA); + return start_dma_without_bch_irq(this, desc); +} + +int gpmi_read_data(struct gpmi_nand_data *this) +{ + struct dma_async_tx_descriptor *desc; + struct dma_chan *channel = get_dma_chan(this); + int chip = this->current_chip; + u32 pio[2]; + + /* [1] : send PIO */ + pio[0] = BF_GPMI_CTRL0_COMMAND_MODE(BV_GPMI_CTRL0_COMMAND_MODE__READ) + | BM_GPMI_CTRL0_WORD_LENGTH + | BF_GPMI_CTRL0_CS(chip, this) + | BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this) + | BF_GPMI_CTRL0_ADDRESS(BV_GPMI_CTRL0_ADDRESS__NAND_DATA) + | BF_GPMI_CTRL0_XFER_COUNT(this->upper_len); + pio[1] = 0; + desc = channel->device->device_prep_slave_sg(channel, + (struct scatterlist *)pio, + ARRAY_SIZE(pio), DMA_NONE, 0); + if (!desc) { + pr_err("step 1 error\n"); + return -1; + } + + /* [2] : send DMA request */ + prepare_data_dma(this, DMA_FROM_DEVICE); + desc = channel->device->device_prep_slave_sg(channel, &this->data_sgl, + 1, DMA_FROM_DEVICE, 1); + if (!desc) { + pr_err("step 2 error\n"); + return -1; + } + + /* [3] : submit the DMA */ + set_dma_type(this, DMA_FOR_READ_DATA); + return start_dma_without_bch_irq(this, desc); +} + +int gpmi_send_page(struct gpmi_nand_data *this, + dma_addr_t payload, dma_addr_t auxiliary) +{ + struct bch_geometry *geo = &this->bch_geometry; + uint32_t command_mode; + uint32_t address; + uint32_t ecc_command; + uint32_t buffer_mask; + struct dma_async_tx_descriptor *desc; + struct dma_chan *channel = get_dma_chan(this); + int chip = this->current_chip; + u32 pio[6]; + + /* A DMA descriptor that does an ECC page read. */ + command_mode = BV_GPMI_CTRL0_COMMAND_MODE__WRITE; + address = BV_GPMI_CTRL0_ADDRESS__NAND_DATA; + ecc_command = BV_GPMI_ECCCTRL_ECC_CMD__BCH_ENCODE; + buffer_mask = BV_GPMI_ECCCTRL_BUFFER_MASK__BCH_PAGE | + BV_GPMI_ECCCTRL_BUFFER_MASK__BCH_AUXONLY; + + pio[0] = BF_GPMI_CTRL0_COMMAND_MODE(command_mode) + | BM_GPMI_CTRL0_WORD_LENGTH + | BF_GPMI_CTRL0_CS(chip, this) + | BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this) + | BF_GPMI_CTRL0_ADDRESS(address) + | BF_GPMI_CTRL0_XFER_COUNT(0); + pio[1] = 0; + pio[2] = BM_GPMI_ECCCTRL_ENABLE_ECC + | BF_GPMI_ECCCTRL_ECC_CMD(ecc_command) + | BF_GPMI_ECCCTRL_BUFFER_MASK(buffer_mask); + pio[3] = geo->page_size; + pio[4] = payload; + pio[5] = auxiliary; + + desc = channel->device->device_prep_slave_sg(channel, + (struct scatterlist *)pio, + ARRAY_SIZE(pio), DMA_NONE, 0); + if (!desc) { + pr_err("step 2 error\n"); + return -1; + } + set_dma_type(this, DMA_FOR_WRITE_ECC_PAGE); + return start_dma_with_bch_irq(this, desc); +} + +int gpmi_read_page(struct gpmi_nand_data *this, + dma_addr_t payload, dma_addr_t auxiliary) +{ + struct bch_geometry *geo = &this->bch_geometry; + uint32_t command_mode; + uint32_t address; + uint32_t ecc_command; + uint32_t buffer_mask; + struct dma_async_tx_descriptor *desc; + struct dma_chan *channel = get_dma_chan(this); + int chip = this->current_chip; + u32 pio[6]; + + /* [1] Wait for the chip to report ready. */ + command_mode = BV_GPMI_CTRL0_COMMAND_MODE__WAIT_FOR_READY; + address = BV_GPMI_CTRL0_ADDRESS__NAND_DATA; + + pio[0] = BF_GPMI_CTRL0_COMMAND_MODE(command_mode) + | BM_GPMI_CTRL0_WORD_LENGTH + | BF_GPMI_CTRL0_CS(chip, this) + | BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this) + | BF_GPMI_CTRL0_ADDRESS(address) + | BF_GPMI_CTRL0_XFER_COUNT(0); + pio[1] = 0; + desc = channel->device->device_prep_slave_sg(channel, + (struct scatterlist *)pio, 2, DMA_NONE, 0); + if (!desc) { + pr_err("step 1 error\n"); + return -1; + } + + /* [2] Enable the BCH block and read. */ + command_mode = BV_GPMI_CTRL0_COMMAND_MODE__READ; + address = BV_GPMI_CTRL0_ADDRESS__NAND_DATA; + ecc_command = BV_GPMI_ECCCTRL_ECC_CMD__BCH_DECODE; + buffer_mask = BV_GPMI_ECCCTRL_BUFFER_MASK__BCH_PAGE + | BV_GPMI_ECCCTRL_BUFFER_MASK__BCH_AUXONLY; + + pio[0] = BF_GPMI_CTRL0_COMMAND_MODE(command_mode) + | BM_GPMI_CTRL0_WORD_LENGTH + | BF_GPMI_CTRL0_CS(chip, this) + | BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this) + | BF_GPMI_CTRL0_ADDRESS(address) + | BF_GPMI_CTRL0_XFER_COUNT(geo->page_size); + + pio[1] = 0; + pio[2] = BM_GPMI_ECCCTRL_ENABLE_ECC + | BF_GPMI_ECCCTRL_ECC_CMD(ecc_command) + | BF_GPMI_ECCCTRL_BUFFER_MASK(buffer_mask); + pio[3] = geo->page_size; + pio[4] = payload; + pio[5] = auxiliary; + desc = channel->device->device_prep_slave_sg(channel, + (struct scatterlist *)pio, + ARRAY_SIZE(pio), DMA_NONE, 1); + if (!desc) { + pr_err("step 2 error\n"); + return -1; + } + + /* [3] Disable the BCH block */ + command_mode = BV_GPMI_CTRL0_COMMAND_MODE__WAIT_FOR_READY; + address = BV_GPMI_CTRL0_ADDRESS__NAND_DATA; + + pio[0] = BF_GPMI_CTRL0_COMMAND_MODE(command_mode) + | BM_GPMI_CTRL0_WORD_LENGTH + | BF_GPMI_CTRL0_CS(chip, this) + | BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this) + | BF_GPMI_CTRL0_ADDRESS(address) + | BF_GPMI_CTRL0_XFER_COUNT(geo->page_size); + pio[1] = 0; + desc = channel->device->device_prep_slave_sg(channel, + (struct scatterlist *)pio, 2, DMA_NONE, 1); + if (!desc) { + pr_err("step 3 error\n"); + return -1; + } + + /* [4] submit the DMA */ + set_dma_type(this, DMA_FOR_READ_ECC_PAGE); + return start_dma_with_bch_irq(this, desc); +} diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-regs.h b/drivers/mtd/nand/gpmi-nand/gpmi-regs.h new file mode 100644 index 0000000..8343124 --- /dev/null +++ b/drivers/mtd/nand/gpmi-nand/gpmi-regs.h @@ -0,0 +1,172 @@ +/* + * Freescale GPMI NAND Flash Driver + * + * Copyright 2008-2011 Freescale Semiconductor, Inc. + * Copyright 2008 Embedded Alley Solutions, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#ifndef __GPMI_NAND_GPMI_REGS_H +#define __GPMI_NAND_GPMI_REGS_H + +#define HW_GPMI_CTRL0 0x00000000 +#define HW_GPMI_CTRL0_SET 0x00000004 +#define HW_GPMI_CTRL0_CLR 0x00000008 +#define HW_GPMI_CTRL0_TOG 0x0000000c + +#define BP_GPMI_CTRL0_COMMAND_MODE 24 +#define BM_GPMI_CTRL0_COMMAND_MODE (3 << BP_GPMI_CTRL0_COMMAND_MODE) +#define BF_GPMI_CTRL0_COMMAND_MODE(v) \ + (((v) << BP_GPMI_CTRL0_COMMAND_MODE) & BM_GPMI_CTRL0_COMMAND_MODE) +#define BV_GPMI_CTRL0_COMMAND_MODE__WRITE 0x0 +#define BV_GPMI_CTRL0_COMMAND_MODE__READ 0x1 +#define BV_GPMI_CTRL0_COMMAND_MODE__READ_AND_COMPARE 0x2 +#define BV_GPMI_CTRL0_COMMAND_MODE__WAIT_FOR_READY 0x3 + +#define BM_GPMI_CTRL0_WORD_LENGTH (1 << 23) +#define BV_GPMI_CTRL0_WORD_LENGTH__16_BIT 0x0 +#define BV_GPMI_CTRL0_WORD_LENGTH__8_BIT 0x1 + +/* + * Difference in LOCK_CS between imx23 and imx28 : + * This bit may impact the _POWER_ consumption. So some chips + * do not set it. + */ +#define MX23_BP_GPMI_CTRL0_LOCK_CS 22 +#define MX28_BP_GPMI_CTRL0_LOCK_CS 27 +#define LOCK_CS_ENABLE 0x1 +#define BF_GPMI_CTRL0_LOCK_CS(v, x) 0x0 + +/* Difference in CS between imx23 and imx28 */ +#define BP_GPMI_CTRL0_CS 20 +#define MX23_BM_GPMI_CTRL0_CS (3 << BP_GPMI_CTRL0_CS) +#define MX28_BM_GPMI_CTRL0_CS (7 << BP_GPMI_CTRL0_CS) +#define BF_GPMI_CTRL0_CS(v, x) (((v) << BP_GPMI_CTRL0_CS) & \ + (GPMI_IS_MX23((x)) \ + ? MX23_BM_GPMI_CTRL0_CS \ + : MX28_BM_GPMI_CTRL0_CS)) + +#define BP_GPMI_CTRL0_ADDRESS 17 +#define BM_GPMI_CTRL0_ADDRESS (3 << BP_GPMI_CTRL0_ADDRESS) +#define BF_GPMI_CTRL0_ADDRESS(v) \ + (((v) << BP_GPMI_CTRL0_ADDRESS) & BM_GPMI_CTRL0_ADDRESS) +#define BV_GPMI_CTRL0_ADDRESS__NAND_DATA 0x0 +#define BV_GPMI_CTRL0_ADDRESS__NAND_CLE 0x1 +#define BV_GPMI_CTRL0_ADDRESS__NAND_ALE 0x2 + +#define BM_GPMI_CTRL0_ADDRESS_INCREMENT (1 << 16) +#define BV_GPMI_CTRL0_ADDRESS_INCREMENT__DISABLED 0x0 +#define BV_GPMI_CTRL0_ADDRESS_INCREMENT__ENABLED 0x1 + +#define BP_GPMI_CTRL0_XFER_COUNT 0 +#define BM_GPMI_CTRL0_XFER_COUNT (0xffff << BP_GPMI_CTRL0_XFER_COUNT) +#define BF_GPMI_CTRL0_XFER_COUNT(v) \ + (((v) << BP_GPMI_CTRL0_XFER_COUNT) & BM_GPMI_CTRL0_XFER_COUNT) + +#define HW_GPMI_COMPARE 0x00000010 + +#define HW_GPMI_ECCCTRL 0x00000020 +#define HW_GPMI_ECCCTRL_SET 0x00000024 +#define HW_GPMI_ECCCTRL_CLR 0x00000028 +#define HW_GPMI_ECCCTRL_TOG 0x0000002c + +#define BP_GPMI_ECCCTRL_ECC_CMD 13 +#define BM_GPMI_ECCCTRL_ECC_CMD (3 << BP_GPMI_ECCCTRL_ECC_CMD) +#define BF_GPMI_ECCCTRL_ECC_CMD(v) \ + (((v) << BP_GPMI_ECCCTRL_ECC_CMD) & BM_GPMI_ECCCTRL_ECC_CMD) +#define BV_GPMI_ECCCTRL_ECC_CMD__BCH_DECODE 0x0 +#define BV_GPMI_ECCCTRL_ECC_CMD__BCH_ENCODE 0x1 + +#define BM_GPMI_ECCCTRL_ENABLE_ECC (1 << 12) +#define BV_GPMI_ECCCTRL_ENABLE_ECC__ENABLE 0x1 +#define BV_GPMI_ECCCTRL_ENABLE_ECC__DISABLE 0x0 + +#define BP_GPMI_ECCCTRL_BUFFER_MASK 0 +#define BM_GPMI_ECCCTRL_BUFFER_MASK (0x1ff << BP_GPMI_ECCCTRL_BUFFER_MASK) +#define BF_GPMI_ECCCTRL_BUFFER_MASK(v) \ + (((v) << BP_GPMI_ECCCTRL_BUFFER_MASK) & BM_GPMI_ECCCTRL_BUFFER_MASK) +#define BV_GPMI_ECCCTRL_BUFFER_MASK__BCH_AUXONLY 0x100 +#define BV_GPMI_ECCCTRL_BUFFER_MASK__BCH_PAGE 0x1FF + +#define HW_GPMI_ECCCOUNT 0x00000030 +#define HW_GPMI_PAYLOAD 0x00000040 +#define HW_GPMI_AUXILIARY 0x00000050 +#define HW_GPMI_CTRL1 0x00000060 +#define HW_GPMI_CTRL1_SET 0x00000064 +#define HW_GPMI_CTRL1_CLR 0x00000068 +#define HW_GPMI_CTRL1_TOG 0x0000006c + +#define BM_GPMI_CTRL1_BCH_MODE (1 << 18) + +#define BP_GPMI_CTRL1_DLL_ENABLE 17 +#define BM_GPMI_CTRL1_DLL_ENABLE (1 << BP_GPMI_CTRL1_DLL_ENABLE) + +#define BP_GPMI_CTRL1_HALF_PERIOD 16 +#define BM_GPMI_CTRL1_HALF_PERIOD (1 << BP_GPMI_CTRL1_HALF_PERIOD) + +#define BP_GPMI_CTRL1_RDN_DELAY 12 +#define BM_GPMI_CTRL1_RDN_DELAY (0xf << BP_GPMI_CTRL1_RDN_DELAY) +#define BF_GPMI_CTRL1_RDN_DELAY(v) \ + (((v) << BP_GPMI_CTRL1_RDN_DELAY) & BM_GPMI_CTRL1_RDN_DELAY) + +#define BM_GPMI_CTRL1_DEV_RESET (1 << 3) +#define BV_GPMI_CTRL1_DEV_RESET__ENABLED 0x0 +#define BV_GPMI_CTRL1_DEV_RESET__DISABLED 0x1 + +#define BM_GPMI_CTRL1_ATA_IRQRDY_POLARITY (1 << 2) +#define BV_GPMI_CTRL1_ATA_IRQRDY_POLARITY__ACTIVELOW 0x0 +#define BV_GPMI_CTRL1_ATA_IRQRDY_POLARITY__ACTIVEHIGH 0x1 + +#define BM_GPMI_CTRL1_CAMERA_MODE (1 << 1) +#define BV_GPMI_CTRL1_GPMI_MODE__NAND 0x0 +#define BV_GPMI_CTRL1_GPMI_MODE__ATA 0x1 + +#define BM_GPMI_CTRL1_GPMI_MODE (1 << 0) + +#define HW_GPMI_TIMING0 0x00000070 + +#define BP_GPMI_TIMING0_ADDRESS_SETUP 16 +#define BM_GPMI_TIMING0_ADDRESS_SETUP (0xff << BP_GPMI_TIMING0_ADDRESS_SETUP) +#define BF_GPMI_TIMING0_ADDRESS_SETUP(v) \ + (((v) << BP_GPMI_TIMING0_ADDRESS_SETUP) & BM_GPMI_TIMING0_ADDRESS_SETUP) + +#define BP_GPMI_TIMING0_DATA_HOLD 8 +#define BM_GPMI_TIMING0_DATA_HOLD (0xff << BP_GPMI_TIMING0_DATA_HOLD) +#define BF_GPMI_TIMING0_DATA_HOLD(v) \ + (((v) << BP_GPMI_TIMING0_DATA_HOLD) & BM_GPMI_TIMING0_DATA_HOLD) + +#define BP_GPMI_TIMING0_DATA_SETUP 0 +#define BM_GPMI_TIMING0_DATA_SETUP (0xff << BP_GPMI_TIMING0_DATA_SETUP) +#define BF_GPMI_TIMING0_DATA_SETUP(v) \ + (((v) << BP_GPMI_TIMING0_DATA_SETUP) & BM_GPMI_TIMING0_DATA_SETUP) + +#define HW_GPMI_TIMING1 0x00000080 +#define BP_GPMI_TIMING1_BUSY_TIMEOUT 16 + +#define HW_GPMI_TIMING2 0x00000090 +#define HW_GPMI_DATA 0x000000a0 + +/* MX28 uses this to detect READY. */ +#define HW_GPMI_STAT 0x000000b0 +#define MX28_BP_GPMI_STAT_READY_BUSY 24 +#define MX28_BM_GPMI_STAT_READY_BUSY (0xff << MX28_BP_GPMI_STAT_READY_BUSY) +#define MX28_BF_GPMI_STAT_READY_BUSY(v) \ + (((v) << MX28_BP_GPMI_STAT_READY_BUSY) & MX28_BM_GPMI_STAT_READY_BUSY) + +/* MX23 uses this to detect READY. */ +#define HW_GPMI_DEBUG 0x000000c0 +#define MX23_BP_GPMI_DEBUG_READY0 28 +#define MX23_BM_GPMI_DEBUG_READY0 (1 << MX23_BP_GPMI_DEBUG_READY0) +#endif -- cgit v0.10.2 From 157550ff77cb5087033382782f4e856094466c16 Mon Sep 17 00:00:00 2001 From: Huang Shijie Date: Thu, 8 Sep 2011 10:47:11 +0800 Subject: mtd: add GPMI-NAND driver in the config and Makefile add the GPMI-NAND driver in the relevant Kconfig and Makefile in the MTD. Signed-off-by: Huang Shijie Acked-by: Marek Vasut Tested-by: Koen Beel Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 7ec5b49..42b7b86 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -417,6 +417,19 @@ config MTD_NAND_NANDSIM The simulator may simulate various NAND flash chips for the MTD nand layer. +config MTD_NAND_GPMI_NAND + bool "GPMI NAND Flash Controller driver" + depends on MTD_NAND && (SOC_IMX23 || SOC_IMX28) + select MTD_PARTITIONS + select MTD_CMDLINE_PARTS + help + Enables NAND Flash support for IMX23 or IMX28. + The GPMI controller is very powerful, with the help of BCH + module, it can do the hardware ECC. The GPMI supports several + NAND flashs at the same time. The GPMI may conflicts with other + block, such as SD card. So pay attention to it when you enable + the GPMI. + config MTD_NAND_PLATFORM tristate "Support for generic platform NAND driver" help diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index c9334e9..618f4ba 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -48,5 +48,6 @@ obj-$(CONFIG_MTD_NAND_BCM_UMI) += bcm_umi_nand.o nand_bcm_umi.o obj-$(CONFIG_MTD_NAND_MPC5121_NFC) += mpc5121_nfc.o obj-$(CONFIG_MTD_NAND_RICOH) += r852.o obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o +obj-$(CONFIG_MTD_NAND_GPMI_NAND) += gpmi-nand/ nand-objs := nand_base.o nand_bbt.o diff --git a/drivers/mtd/nand/gpmi-nand/Makefile b/drivers/mtd/nand/gpmi-nand/Makefile new file mode 100644 index 0000000..3a46248 --- /dev/null +++ b/drivers/mtd/nand/gpmi-nand/Makefile @@ -0,0 +1,3 @@ +obj-$(CONFIG_MTD_NAND_GPMI_NAND) += gpmi_nand.o +gpmi_nand-objs += gpmi-nand.o +gpmi_nand-objs += gpmi-lib.o -- cgit v0.10.2 From 10a2bcae99267b28e058b089fda30de7397b69f5 Mon Sep 17 00:00:00 2001 From: Huang Shijie Date: Thu, 8 Sep 2011 10:47:09 +0800 Subject: mtd: add the common code for GPMI-NAND controller driver These files contain the common code for the GPMI-NAND driver. Signed-off-by: Huang Shijie Acked-by: Marek Vasut Tested-by: Koen Beel Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c new file mode 100644 index 0000000..5c0fe0d --- /dev/null +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -0,0 +1,1619 @@ +/* + * Freescale GPMI NAND Flash Driver + * + * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. + * Copyright (C) 2008 Embedded Alley Solutions, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#include +#include +#include +#include +#include + +#include "gpmi-nand.h" + +/* add our owner bbt descriptor */ +static uint8_t scan_ff_pattern[] = { 0xff }; +static struct nand_bbt_descr gpmi_bbt_descr = { + .options = 0, + .offs = 0, + .len = 1, + .pattern = scan_ff_pattern +}; + +/* We will use all the (page + OOB). */ +static struct nand_ecclayout gpmi_hw_ecclayout = { + .eccbytes = 0, + .eccpos = { 0, }, + .oobfree = { {.offset = 0, .length = 0} } +}; + +static irqreturn_t bch_irq(int irq, void *cookie) +{ + struct gpmi_nand_data *this = cookie; + + gpmi_clear_bch(this); + complete(&this->bch_done); + return IRQ_HANDLED; +} + +/* + * Calculate the ECC strength by hand: + * E : The ECC strength. + * G : the length of Galois Field. + * N : The chunk count of per page. + * O : the oobsize of the NAND chip. + * M : the metasize of per page. + * + * The formula is : + * E * G * N + * ------------ <= (O - M) + * 8 + * + * So, we get E by: + * (O - M) * 8 + * E <= ------------- + * G * N + */ +static inline int get_ecc_strength(struct gpmi_nand_data *this) +{ + struct bch_geometry *geo = &this->bch_geometry; + struct mtd_info *mtd = &this->mtd; + int ecc_strength; + + ecc_strength = ((mtd->oobsize - geo->metadata_size) * 8) + / (geo->gf_len * geo->ecc_chunk_count); + + /* We need the minor even number. */ + return round_down(ecc_strength, 2); +} + +int common_nfc_set_geometry(struct gpmi_nand_data *this) +{ + struct bch_geometry *geo = &this->bch_geometry; + struct mtd_info *mtd = &this->mtd; + unsigned int metadata_size; + unsigned int status_size; + unsigned int block_mark_bit_offset; + + /* + * The size of the metadata can be changed, though we set it to 10 + * bytes now. But it can't be too large, because we have to save + * enough space for BCH. + */ + geo->metadata_size = 10; + + /* The default for the length of Galois Field. */ + geo->gf_len = 13; + + /* The default for chunk size. There is no oobsize greater then 512. */ + geo->ecc_chunk_size = 512; + while (geo->ecc_chunk_size < mtd->oobsize) + geo->ecc_chunk_size *= 2; /* keep C >= O */ + + geo->ecc_chunk_count = mtd->writesize / geo->ecc_chunk_size; + + /* We use the same ECC strength for all chunks. */ + geo->ecc_strength = get_ecc_strength(this); + if (!geo->ecc_strength) { + pr_err("We get a wrong ECC strength.\n"); + return -EINVAL; + } + + geo->page_size = mtd->writesize + mtd->oobsize; + geo->payload_size = mtd->writesize; + + /* + * The auxiliary buffer contains the metadata and the ECC status. The + * metadata is padded to the nearest 32-bit boundary. The ECC status + * contains one byte for every ECC chunk, and is also padded to the + * nearest 32-bit boundary. + */ + metadata_size = ALIGN(geo->metadata_size, 4); + status_size = ALIGN(geo->ecc_chunk_count, 4); + + geo->auxiliary_size = metadata_size + status_size; + geo->auxiliary_status_offset = metadata_size; + + if (!this->swap_block_mark) + return 0; + + /* + * We need to compute the byte and bit offsets of + * the physical block mark within the ECC-based view of the page. + * + * NAND chip with 2K page shows below: + * (Block Mark) + * | | + * | D | + * |<---->| + * V V + * +---+----------+-+----------+-+----------+-+----------+-+ + * | M | data |E| data |E| data |E| data |E| + * +---+----------+-+----------+-+----------+-+----------+-+ + * + * The position of block mark moves forward in the ECC-based view + * of page, and the delta is: + * + * E * G * (N - 1) + * D = (---------------- + M) + * 8 + * + * With the formula to compute the ECC strength, and the condition + * : C >= O (C is the ecc chunk size) + * + * It's easy to deduce to the following result: + * + * E * G (O - M) C - M C - M + * ----------- <= ------- <= -------- < --------- + * 8 N N (N - 1) + * + * So, we get: + * + * E * G * (N - 1) + * D = (---------------- + M) < C + * 8 + * + * The above inequality means the position of block mark + * within the ECC-based view of the page is still in the data chunk, + * and it's NOT in the ECC bits of the chunk. + * + * Use the following to compute the bit position of the + * physical block mark within the ECC-based view of the page: + * (page_size - D) * 8 + * + * --Huang Shijie + */ + block_mark_bit_offset = mtd->writesize * 8 - + (geo->ecc_strength * geo->gf_len * (geo->ecc_chunk_count - 1) + + geo->metadata_size * 8); + + geo->block_mark_byte_offset = block_mark_bit_offset / 8; + geo->block_mark_bit_offset = block_mark_bit_offset % 8; + return 0; +} + +struct dma_chan *get_dma_chan(struct gpmi_nand_data *this) +{ + int chipnr = this->current_chip; + + return this->dma_chans[chipnr]; +} + +/* Can we use the upper's buffer directly for DMA? */ +void prepare_data_dma(struct gpmi_nand_data *this, enum dma_data_direction dr) +{ + struct scatterlist *sgl = &this->data_sgl; + int ret; + + this->direct_dma_map_ok = true; + + /* first try to map the upper buffer directly */ + sg_init_one(sgl, this->upper_buf, this->upper_len); + ret = dma_map_sg(this->dev, sgl, 1, dr); + if (ret == 0) { + /* We have to use our own DMA buffer. */ + sg_init_one(sgl, this->data_buffer_dma, PAGE_SIZE); + + if (dr == DMA_TO_DEVICE) + memcpy(this->data_buffer_dma, this->upper_buf, + this->upper_len); + + ret = dma_map_sg(this->dev, sgl, 1, dr); + if (ret == 0) + pr_err("map failed.\n"); + + this->direct_dma_map_ok = false; + } +} + +/* This will be called after the DMA operation is finished. */ +static void dma_irq_callback(void *param) +{ + struct gpmi_nand_data *this = param; + struct completion *dma_c = &this->dma_done; + + complete(dma_c); + + switch (this->dma_type) { + case DMA_FOR_COMMAND: + dma_unmap_sg(this->dev, &this->cmd_sgl, 1, DMA_TO_DEVICE); + break; + + case DMA_FOR_READ_DATA: + dma_unmap_sg(this->dev, &this->data_sgl, 1, DMA_FROM_DEVICE); + if (this->direct_dma_map_ok == false) + memcpy(this->upper_buf, this->data_buffer_dma, + this->upper_len); + break; + + case DMA_FOR_WRITE_DATA: + dma_unmap_sg(this->dev, &this->data_sgl, 1, DMA_TO_DEVICE); + break; + + case DMA_FOR_READ_ECC_PAGE: + case DMA_FOR_WRITE_ECC_PAGE: + /* We have to wait the BCH interrupt to finish. */ + break; + + default: + pr_err("in wrong DMA operation.\n"); + } +} + +int start_dma_without_bch_irq(struct gpmi_nand_data *this, + struct dma_async_tx_descriptor *desc) +{ + struct completion *dma_c = &this->dma_done; + int err; + + init_completion(dma_c); + + desc->callback = dma_irq_callback; + desc->callback_param = this; + dmaengine_submit(desc); + + /* Wait for the interrupt from the DMA block. */ + err = wait_for_completion_timeout(dma_c, msecs_to_jiffies(1000)); + if (!err) { + pr_err("DMA timeout, last DMA :%d\n", this->last_dma_type); + gpmi_dump_info(this); + return -ETIMEDOUT; + } + return 0; +} + +/* + * This function is used in BCH reading or BCH writing pages. + * It will wait for the BCH interrupt as long as ONE second. + * Actually, we must wait for two interrupts : + * [1] firstly the DMA interrupt and + * [2] secondly the BCH interrupt. + */ +int start_dma_with_bch_irq(struct gpmi_nand_data *this, + struct dma_async_tx_descriptor *desc) +{ + struct completion *bch_c = &this->bch_done; + int err; + + /* Prepare to receive an interrupt from the BCH block. */ + init_completion(bch_c); + + /* start the DMA */ + start_dma_without_bch_irq(this, desc); + + /* Wait for the interrupt from the BCH block. */ + err = wait_for_completion_timeout(bch_c, msecs_to_jiffies(1000)); + if (!err) { + pr_err("BCH timeout, last DMA :%d\n", this->last_dma_type); + gpmi_dump_info(this); + return -ETIMEDOUT; + } + return 0; +} + +static int __devinit +acquire_register_block(struct gpmi_nand_data *this, const char *res_name) +{ + struct platform_device *pdev = this->pdev; + struct resources *res = &this->resources; + struct resource *r; + void *p; + + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, res_name); + if (!r) { + pr_err("Can't get resource for %s\n", res_name); + return -ENXIO; + } + + p = ioremap(r->start, resource_size(r)); + if (!p) { + pr_err("Can't remap %s\n", res_name); + return -ENOMEM; + } + + if (!strcmp(res_name, GPMI_NAND_GPMI_REGS_ADDR_RES_NAME)) + res->gpmi_regs = p; + else if (!strcmp(res_name, GPMI_NAND_BCH_REGS_ADDR_RES_NAME)) + res->bch_regs = p; + else + pr_err("unknown resource name : %s\n", res_name); + + return 0; +} + +static void release_register_block(struct gpmi_nand_data *this) +{ + struct resources *res = &this->resources; + if (res->gpmi_regs) + iounmap(res->gpmi_regs); + if (res->bch_regs) + iounmap(res->bch_regs); + res->gpmi_regs = NULL; + res->bch_regs = NULL; +} + +static int __devinit +acquire_bch_irq(struct gpmi_nand_data *this, irq_handler_t irq_h) +{ + struct platform_device *pdev = this->pdev; + struct resources *res = &this->resources; + const char *res_name = GPMI_NAND_BCH_INTERRUPT_RES_NAME; + struct resource *r; + int err; + + r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, res_name); + if (!r) { + pr_err("Can't get resource for %s\n", res_name); + return -ENXIO; + } + + err = request_irq(r->start, irq_h, 0, res_name, this); + if (err) { + pr_err("Can't own %s\n", res_name); + return err; + } + + res->bch_low_interrupt = r->start; + res->bch_high_interrupt = r->end; + return 0; +} + +static void release_bch_irq(struct gpmi_nand_data *this) +{ + struct resources *res = &this->resources; + int i = res->bch_low_interrupt; + + for (; i <= res->bch_high_interrupt; i++) + free_irq(i, this); +} + +static bool gpmi_dma_filter(struct dma_chan *chan, void *param) +{ + struct gpmi_nand_data *this = param; + struct resource *r = this->private; + + if (!mxs_dma_is_apbh(chan)) + return false; + /* + * only catch the GPMI dma channels : + * for mx23 : MX23_DMA_GPMI0 ~ MX23_DMA_GPMI3 + * (These four channels share the same IRQ!) + * + * for mx28 : MX28_DMA_GPMI0 ~ MX28_DMA_GPMI7 + * (These eight channels share the same IRQ!) + */ + if (r->start <= chan->chan_id && chan->chan_id <= r->end) { + chan->private = &this->dma_data; + return true; + } + return false; +} + +static void release_dma_channels(struct gpmi_nand_data *this) +{ + unsigned int i; + for (i = 0; i < DMA_CHANS; i++) + if (this->dma_chans[i]) { + dma_release_channel(this->dma_chans[i]); + this->dma_chans[i] = NULL; + } +} + +static int __devinit acquire_dma_channels(struct gpmi_nand_data *this) +{ + struct platform_device *pdev = this->pdev; + struct gpmi_nand_platform_data *pdata = this->pdata; + struct resources *res = &this->resources; + struct resource *r, *r_dma; + unsigned int i; + + r = platform_get_resource_byname(pdev, IORESOURCE_DMA, + GPMI_NAND_DMA_CHANNELS_RES_NAME); + r_dma = platform_get_resource_byname(pdev, IORESOURCE_IRQ, + GPMI_NAND_DMA_INTERRUPT_RES_NAME); + if (!r || !r_dma) { + pr_err("Can't get resource for DMA\n"); + return -ENXIO; + } + + /* used in gpmi_dma_filter() */ + this->private = r; + + for (i = r->start; i <= r->end; i++) { + struct dma_chan *dma_chan; + dma_cap_mask_t mask; + + if (i - r->start >= pdata->max_chip_count) + break; + + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + + /* get the DMA interrupt */ + if (r_dma->start == r_dma->end) { + /* only register the first. */ + if (i == r->start) + this->dma_data.chan_irq = r_dma->start; + else + this->dma_data.chan_irq = NO_IRQ; + } else + this->dma_data.chan_irq = r_dma->start + (i - r->start); + + dma_chan = dma_request_channel(mask, gpmi_dma_filter, this); + if (!dma_chan) + goto acquire_err; + + /* fill the first empty item */ + this->dma_chans[i - r->start] = dma_chan; + } + + res->dma_low_channel = r->start; + res->dma_high_channel = i; + return 0; + +acquire_err: + pr_err("Can't acquire DMA channel %u\n", i); + release_dma_channels(this); + return -EINVAL; +} + +static int __devinit acquire_resources(struct gpmi_nand_data *this) +{ + struct resources *res = &this->resources; + int ret; + + ret = acquire_register_block(this, GPMI_NAND_GPMI_REGS_ADDR_RES_NAME); + if (ret) + goto exit_regs; + + ret = acquire_register_block(this, GPMI_NAND_BCH_REGS_ADDR_RES_NAME); + if (ret) + goto exit_regs; + + ret = acquire_bch_irq(this, bch_irq); + if (ret) + goto exit_regs; + + ret = acquire_dma_channels(this); + if (ret) + goto exit_dma_channels; + + res->clock = clk_get(&this->pdev->dev, NULL); + if (IS_ERR(res->clock)) { + pr_err("can not get the clock\n"); + ret = -ENOENT; + goto exit_clock; + } + return 0; + +exit_clock: + release_dma_channels(this); +exit_dma_channels: + release_bch_irq(this); +exit_regs: + release_register_block(this); + return ret; +} + +static void release_resources(struct gpmi_nand_data *this) +{ + struct resources *r = &this->resources; + + clk_put(r->clock); + release_register_block(this); + release_bch_irq(this); + release_dma_channels(this); +} + +static int __devinit init_hardware(struct gpmi_nand_data *this) +{ + int ret; + + /* + * This structure contains the "safe" GPMI timing that should succeed + * with any NAND Flash device + * (although, with less-than-optimal performance). + */ + struct nand_timing safe_timing = { + .data_setup_in_ns = 80, + .data_hold_in_ns = 60, + .address_setup_in_ns = 25, + .gpmi_sample_delay_in_ns = 6, + .tREA_in_ns = -1, + .tRLOH_in_ns = -1, + .tRHOH_in_ns = -1, + }; + + /* Initialize the hardwares. */ + ret = gpmi_init(this); + if (ret) + return ret; + + this->timing = safe_timing; + return 0; +} + +static int read_page_prepare(struct gpmi_nand_data *this, + void *destination, unsigned length, + void *alt_virt, dma_addr_t alt_phys, unsigned alt_size, + void **use_virt, dma_addr_t *use_phys) +{ + struct device *dev = this->dev; + + if (virt_addr_valid(destination)) { + dma_addr_t dest_phys; + + dest_phys = dma_map_single(dev, destination, + length, DMA_FROM_DEVICE); + if (dma_mapping_error(dev, dest_phys)) { + if (alt_size < length) { + pr_err("Alternate buffer is too small\n"); + return -ENOMEM; + } + goto map_failed; + } + *use_virt = destination; + *use_phys = dest_phys; + this->direct_dma_map_ok = true; + return 0; + } + +map_failed: + *use_virt = alt_virt; + *use_phys = alt_phys; + this->direct_dma_map_ok = false; + return 0; +} + +static inline void read_page_end(struct gpmi_nand_data *this, + void *destination, unsigned length, + void *alt_virt, dma_addr_t alt_phys, unsigned alt_size, + void *used_virt, dma_addr_t used_phys) +{ + if (this->direct_dma_map_ok) + dma_unmap_single(this->dev, used_phys, length, DMA_FROM_DEVICE); +} + +static inline void read_page_swap_end(struct gpmi_nand_data *this, + void *destination, unsigned length, + void *alt_virt, dma_addr_t alt_phys, unsigned alt_size, + void *used_virt, dma_addr_t used_phys) +{ + if (!this->direct_dma_map_ok) + memcpy(destination, alt_virt, length); +} + +static int send_page_prepare(struct gpmi_nand_data *this, + const void *source, unsigned length, + void *alt_virt, dma_addr_t alt_phys, unsigned alt_size, + const void **use_virt, dma_addr_t *use_phys) +{ + struct device *dev = this->dev; + + if (virt_addr_valid(source)) { + dma_addr_t source_phys; + + source_phys = dma_map_single(dev, (void *)source, length, + DMA_TO_DEVICE); + if (dma_mapping_error(dev, source_phys)) { + if (alt_size < length) { + pr_err("Alternate buffer is too small\n"); + return -ENOMEM; + } + goto map_failed; + } + *use_virt = source; + *use_phys = source_phys; + return 0; + } +map_failed: + /* + * Copy the content of the source buffer into the alternate + * buffer and set up the return values accordingly. + */ + memcpy(alt_virt, source, length); + + *use_virt = alt_virt; + *use_phys = alt_phys; + return 0; +} + +static void send_page_end(struct gpmi_nand_data *this, + const void *source, unsigned length, + void *alt_virt, dma_addr_t alt_phys, unsigned alt_size, + const void *used_virt, dma_addr_t used_phys) +{ + struct device *dev = this->dev; + if (used_virt == source) + dma_unmap_single(dev, used_phys, length, DMA_TO_DEVICE); +} + +static void gpmi_free_dma_buffer(struct gpmi_nand_data *this) +{ + struct device *dev = this->dev; + + if (this->page_buffer_virt && virt_addr_valid(this->page_buffer_virt)) + dma_free_coherent(dev, this->page_buffer_size, + this->page_buffer_virt, + this->page_buffer_phys); + kfree(this->cmd_buffer); + kfree(this->data_buffer_dma); + + this->cmd_buffer = NULL; + this->data_buffer_dma = NULL; + this->page_buffer_virt = NULL; + this->page_buffer_size = 0; +} + +/* Allocate the DMA buffers */ +static int gpmi_alloc_dma_buffer(struct gpmi_nand_data *this) +{ + struct bch_geometry *geo = &this->bch_geometry; + struct device *dev = this->dev; + + /* [1] Allocate a command buffer. PAGE_SIZE is enough. */ + this->cmd_buffer = kzalloc(PAGE_SIZE, GFP_DMA); + if (this->cmd_buffer == NULL) + goto error_alloc; + + /* [2] Allocate a read/write data buffer. PAGE_SIZE is enough. */ + this->data_buffer_dma = kzalloc(PAGE_SIZE, GFP_DMA); + if (this->data_buffer_dma == NULL) + goto error_alloc; + + /* + * [3] Allocate the page buffer. + * + * Both the payload buffer and the auxiliary buffer must appear on + * 32-bit boundaries. We presume the size of the payload buffer is a + * power of two and is much larger than four, which guarantees the + * auxiliary buffer will appear on a 32-bit boundary. + */ + this->page_buffer_size = geo->payload_size + geo->auxiliary_size; + this->page_buffer_virt = dma_alloc_coherent(dev, this->page_buffer_size, + &this->page_buffer_phys, GFP_DMA); + if (!this->page_buffer_virt) + goto error_alloc; + + + /* Slice up the page buffer. */ + this->payload_virt = this->page_buffer_virt; + this->payload_phys = this->page_buffer_phys; + this->auxiliary_virt = this->payload_virt + geo->payload_size; + this->auxiliary_phys = this->payload_phys + geo->payload_size; + return 0; + +error_alloc: + gpmi_free_dma_buffer(this); + pr_err("allocate DMA buffer ret!!\n"); + return -ENOMEM; +} + +static void gpmi_cmd_ctrl(struct mtd_info *mtd, int data, unsigned int ctrl) +{ + struct nand_chip *chip = mtd->priv; + struct gpmi_nand_data *this = chip->priv; + int ret; + + /* + * Every operation begins with a command byte and a series of zero or + * more address bytes. These are distinguished by either the Address + * Latch Enable (ALE) or Command Latch Enable (CLE) signals being + * asserted. When MTD is ready to execute the command, it will deassert + * both latch enables. + * + * Rather than run a separate DMA operation for every single byte, we + * queue them up and run a single DMA operation for the entire series + * of command and data bytes. NAND_CMD_NONE means the END of the queue. + */ + if ((ctrl & (NAND_ALE | NAND_CLE))) { + if (data != NAND_CMD_NONE) + this->cmd_buffer[this->command_length++] = data; + return; + } + + if (!this->command_length) + return; + + ret = gpmi_send_command(this); + if (ret) + pr_err("Chip: %u, Error %d\n", this->current_chip, ret); + + this->command_length = 0; +} + +static int gpmi_dev_ready(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + struct gpmi_nand_data *this = chip->priv; + + return gpmi_is_ready(this, this->current_chip); +} + +static void gpmi_select_chip(struct mtd_info *mtd, int chipnr) +{ + struct nand_chip *chip = mtd->priv; + struct gpmi_nand_data *this = chip->priv; + + if ((this->current_chip < 0) && (chipnr >= 0)) + gpmi_begin(this); + else if ((this->current_chip >= 0) && (chipnr < 0)) + gpmi_end(this); + + this->current_chip = chipnr; +} + +static void gpmi_read_buf(struct mtd_info *mtd, uint8_t *buf, int len) +{ + struct nand_chip *chip = mtd->priv; + struct gpmi_nand_data *this = chip->priv; + + pr_debug("len is %d\n", len); + this->upper_buf = buf; + this->upper_len = len; + + gpmi_read_data(this); +} + +static void gpmi_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len) +{ + struct nand_chip *chip = mtd->priv; + struct gpmi_nand_data *this = chip->priv; + + pr_debug("len is %d\n", len); + this->upper_buf = (uint8_t *)buf; + this->upper_len = len; + + gpmi_send_data(this); +} + +static uint8_t gpmi_read_byte(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + struct gpmi_nand_data *this = chip->priv; + uint8_t *buf = this->data_buffer_dma; + + gpmi_read_buf(mtd, buf, 1); + return buf[0]; +} + +/* + * Handles block mark swapping. + * It can be called in swapping the block mark, or swapping it back, + * because the the operations are the same. + */ +static void block_mark_swapping(struct gpmi_nand_data *this, + void *payload, void *auxiliary) +{ + struct bch_geometry *nfc_geo = &this->bch_geometry; + unsigned char *p; + unsigned char *a; + unsigned int bit; + unsigned char mask; + unsigned char from_data; + unsigned char from_oob; + + if (!this->swap_block_mark) + return; + + /* + * If control arrives here, we're swapping. Make some convenience + * variables. + */ + bit = nfc_geo->block_mark_bit_offset; + p = payload + nfc_geo->block_mark_byte_offset; + a = auxiliary; + + /* + * Get the byte from the data area that overlays the block mark. Since + * the ECC engine applies its own view to the bits in the page, the + * physical block mark won't (in general) appear on a byte boundary in + * the data. + */ + from_data = (p[0] >> bit) | (p[1] << (8 - bit)); + + /* Get the byte from the OOB. */ + from_oob = a[0]; + + /* Swap them. */ + a[0] = from_data; + + mask = (0x1 << bit) - 1; + p[0] = (p[0] & mask) | (from_oob << bit); + + mask = ~0 << bit; + p[1] = (p[1] & mask) | (from_oob >> (8 - bit)); +} + +static int gpmi_ecc_read_page(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf, int page) +{ + struct gpmi_nand_data *this = chip->priv; + struct bch_geometry *nfc_geo = &this->bch_geometry; + void *payload_virt; + dma_addr_t payload_phys; + void *auxiliary_virt; + dma_addr_t auxiliary_phys; + unsigned int i; + unsigned char *status; + unsigned int failed; + unsigned int corrected; + int ret; + + pr_debug("page number is : %d\n", page); + ret = read_page_prepare(this, buf, mtd->writesize, + this->payload_virt, this->payload_phys, + nfc_geo->payload_size, + &payload_virt, &payload_phys); + if (ret) { + pr_err("Inadequate DMA buffer\n"); + ret = -ENOMEM; + return ret; + } + auxiliary_virt = this->auxiliary_virt; + auxiliary_phys = this->auxiliary_phys; + + /* go! */ + ret = gpmi_read_page(this, payload_phys, auxiliary_phys); + read_page_end(this, buf, mtd->writesize, + this->payload_virt, this->payload_phys, + nfc_geo->payload_size, + payload_virt, payload_phys); + if (ret) { + pr_err("Error in ECC-based read: %d\n", ret); + goto exit_nfc; + } + + /* handle the block mark swapping */ + block_mark_swapping(this, payload_virt, auxiliary_virt); + + /* Loop over status bytes, accumulating ECC status. */ + failed = 0; + corrected = 0; + status = auxiliary_virt + nfc_geo->auxiliary_status_offset; + + for (i = 0; i < nfc_geo->ecc_chunk_count; i++, status++) { + if ((*status == STATUS_GOOD) || (*status == STATUS_ERASED)) + continue; + + if (*status == STATUS_UNCORRECTABLE) { + failed++; + continue; + } + corrected += *status; + } + + /* + * Propagate ECC status to the owning MTD only when failed or + * corrected times nearly reaches our ECC correction threshold. + */ + if (failed || corrected >= (nfc_geo->ecc_strength - 1)) { + mtd->ecc_stats.failed += failed; + mtd->ecc_stats.corrected += corrected; + } + + /* + * It's time to deliver the OOB bytes. See gpmi_ecc_read_oob() for + * details about our policy for delivering the OOB. + * + * We fill the caller's buffer with set bits, and then copy the block + * mark to th caller's buffer. Note that, if block mark swapping was + * necessary, it has already been done, so we can rely on the first + * byte of the auxiliary buffer to contain the block mark. + */ + memset(chip->oob_poi, ~0, mtd->oobsize); + chip->oob_poi[0] = ((uint8_t *) auxiliary_virt)[0]; + + read_page_swap_end(this, buf, mtd->writesize, + this->payload_virt, this->payload_phys, + nfc_geo->payload_size, + payload_virt, payload_phys); +exit_nfc: + return ret; +} + +static void gpmi_ecc_write_page(struct mtd_info *mtd, + struct nand_chip *chip, const uint8_t *buf) +{ + struct gpmi_nand_data *this = chip->priv; + struct bch_geometry *nfc_geo = &this->bch_geometry; + const void *payload_virt; + dma_addr_t payload_phys; + const void *auxiliary_virt; + dma_addr_t auxiliary_phys; + int ret; + + pr_debug("ecc write page.\n"); + if (this->swap_block_mark) { + /* + * If control arrives here, we're doing block mark swapping. + * Since we can't modify the caller's buffers, we must copy them + * into our own. + */ + memcpy(this->payload_virt, buf, mtd->writesize); + payload_virt = this->payload_virt; + payload_phys = this->payload_phys; + + memcpy(this->auxiliary_virt, chip->oob_poi, + nfc_geo->auxiliary_size); + auxiliary_virt = this->auxiliary_virt; + auxiliary_phys = this->auxiliary_phys; + + /* Handle block mark swapping. */ + block_mark_swapping(this, + (void *) payload_virt, (void *) auxiliary_virt); + } else { + /* + * If control arrives here, we're not doing block mark swapping, + * so we can to try and use the caller's buffers. + */ + ret = send_page_prepare(this, + buf, mtd->writesize, + this->payload_virt, this->payload_phys, + nfc_geo->payload_size, + &payload_virt, &payload_phys); + if (ret) { + pr_err("Inadequate payload DMA buffer\n"); + return; + } + + ret = send_page_prepare(this, + chip->oob_poi, mtd->oobsize, + this->auxiliary_virt, this->auxiliary_phys, + nfc_geo->auxiliary_size, + &auxiliary_virt, &auxiliary_phys); + if (ret) { + pr_err("Inadequate auxiliary DMA buffer\n"); + goto exit_auxiliary; + } + } + + /* Ask the NFC. */ + ret = gpmi_send_page(this, payload_phys, auxiliary_phys); + if (ret) + pr_err("Error in ECC-based write: %d\n", ret); + + if (!this->swap_block_mark) { + send_page_end(this, chip->oob_poi, mtd->oobsize, + this->auxiliary_virt, this->auxiliary_phys, + nfc_geo->auxiliary_size, + auxiliary_virt, auxiliary_phys); +exit_auxiliary: + send_page_end(this, buf, mtd->writesize, + this->payload_virt, this->payload_phys, + nfc_geo->payload_size, + payload_virt, payload_phys); + } +} + +/* + * There are several places in this driver where we have to handle the OOB and + * block marks. This is the function where things are the most complicated, so + * this is where we try to explain it all. All the other places refer back to + * here. + * + * These are the rules, in order of decreasing importance: + * + * 1) Nothing the caller does can be allowed to imperil the block mark. + * + * 2) In read operations, the first byte of the OOB we return must reflect the + * true state of the block mark, no matter where that block mark appears in + * the physical page. + * + * 3) ECC-based read operations return an OOB full of set bits (since we never + * allow ECC-based writes to the OOB, it doesn't matter what ECC-based reads + * return). + * + * 4) "Raw" read operations return a direct view of the physical bytes in the + * page, using the conventional definition of which bytes are data and which + * are OOB. This gives the caller a way to see the actual, physical bytes + * in the page, without the distortions applied by our ECC engine. + * + * + * What we do for this specific read operation depends on two questions: + * + * 1) Are we doing a "raw" read, or an ECC-based read? + * + * 2) Are we using block mark swapping or transcription? + * + * There are four cases, illustrated by the following Karnaugh map: + * + * | Raw | ECC-based | + * -------------+-------------------------+-------------------------+ + * | Read the conventional | | + * | OOB at the end of the | | + * Swapping | page and return it. It | | + * | contains exactly what | | + * | we want. | Read the block mark and | + * -------------+-------------------------+ return it in a buffer | + * | Read the conventional | full of set bits. | + * | OOB at the end of the | | + * | page and also the block | | + * Transcribing | mark in the metadata. | | + * | Copy the block mark | | + * | into the first byte of | | + * | the OOB. | | + * -------------+-------------------------+-------------------------+ + * + * Note that we break rule #4 in the Transcribing/Raw case because we're not + * giving an accurate view of the actual, physical bytes in the page (we're + * overwriting the block mark). That's OK because it's more important to follow + * rule #2. + * + * It turns out that knowing whether we want an "ECC-based" or "raw" read is not + * easy. When reading a page, for example, the NAND Flash MTD code calls our + * ecc.read_page or ecc.read_page_raw function. Thus, the fact that MTD wants an + * ECC-based or raw view of the page is implicit in which function it calls + * (there is a similar pair of ECC-based/raw functions for writing). + * + * Since MTD assumes the OOB is not covered by ECC, there is no pair of + * ECC-based/raw functions for reading or or writing the OOB. The fact that the + * caller wants an ECC-based or raw view of the page is not propagated down to + * this driver. + */ +static int gpmi_ecc_read_oob(struct mtd_info *mtd, struct nand_chip *chip, + int page, int sndcmd) +{ + struct gpmi_nand_data *this = chip->priv; + + pr_debug("page number is %d\n", page); + /* clear the OOB buffer */ + memset(chip->oob_poi, ~0, mtd->oobsize); + + /* Read out the conventional OOB. */ + chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page); + chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); + + /* + * Now, we want to make sure the block mark is correct. In the + * Swapping/Raw case, we already have it. Otherwise, we need to + * explicitly read it. + */ + if (!this->swap_block_mark) { + /* Read the block mark into the first byte of the OOB buffer. */ + chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); + chip->oob_poi[0] = chip->read_byte(mtd); + } + + /* + * Return true, indicating that the next call to this function must send + * a command. + */ + return true; +} + +static int +gpmi_ecc_write_oob(struct mtd_info *mtd, struct nand_chip *chip, int page) +{ + /* + * The BCH will use all the (page + oob). + * Our gpmi_hw_ecclayout can only prohibit the JFFS2 to write the oob. + * But it can not stop some ioctls such MEMWRITEOOB which uses + * MTD_OOB_PLACE. So We have to implement this function to prohibit + * these ioctls too. + */ + return -EPERM; +} + +static int gpmi_block_markbad(struct mtd_info *mtd, loff_t ofs) +{ + struct nand_chip *chip = mtd->priv; + struct gpmi_nand_data *this = chip->priv; + int block, ret = 0; + uint8_t *block_mark; + int column, page, status, chipnr; + + /* Get block number */ + block = (int)(ofs >> chip->bbt_erase_shift); + if (chip->bbt) + chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); + + /* Do we have a flash based bad block table ? */ + if (chip->options & NAND_BBT_USE_FLASH) + ret = nand_update_bbt(mtd, ofs); + else { + chipnr = (int)(ofs >> chip->chip_shift); + chip->select_chip(mtd, chipnr); + + column = this->swap_block_mark ? mtd->writesize : 0; + + /* Write the block mark. */ + block_mark = this->data_buffer_dma; + block_mark[0] = 0; /* bad block marker */ + + /* Shift to get page */ + page = (int)(ofs >> chip->page_shift); + + chip->cmdfunc(mtd, NAND_CMD_SEQIN, column, page); + chip->write_buf(mtd, block_mark, 1); + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + + status = chip->waitfunc(mtd, chip); + if (status & NAND_STATUS_FAIL) + ret = -EIO; + + chip->select_chip(mtd, -1); + } + if (!ret) + mtd->ecc_stats.badblocks++; + + return ret; +} + +static int __devinit nand_boot_set_geometry(struct gpmi_nand_data *this) +{ + struct boot_rom_geometry *geometry = &this->rom_geometry; + + /* + * Set the boot block stride size. + * + * In principle, we should be reading this from the OTP bits, since + * that's where the ROM is going to get it. In fact, we don't have any + * way to read the OTP bits, so we go with the default and hope for the + * best. + */ + geometry->stride_size_in_pages = 64; + + /* + * Set the search area stride exponent. + * + * In principle, we should be reading this from the OTP bits, since + * that's where the ROM is going to get it. In fact, we don't have any + * way to read the OTP bits, so we go with the default and hope for the + * best. + */ + geometry->search_area_stride_exponent = 2; + return 0; +} + +static const char *fingerprint = "STMP"; +static int __devinit mx23_check_transcription_stamp(struct gpmi_nand_data *this) +{ + struct boot_rom_geometry *rom_geo = &this->rom_geometry; + struct device *dev = this->dev; + struct mtd_info *mtd = &this->mtd; + struct nand_chip *chip = &this->nand; + unsigned int search_area_size_in_strides; + unsigned int stride; + unsigned int page; + loff_t byte; + uint8_t *buffer = chip->buffers->databuf; + int saved_chip_number; + int found_an_ncb_fingerprint = false; + + /* Compute the number of strides in a search area. */ + search_area_size_in_strides = 1 << rom_geo->search_area_stride_exponent; + + saved_chip_number = this->current_chip; + chip->select_chip(mtd, 0); + + /* + * Loop through the first search area, looking for the NCB fingerprint. + */ + dev_dbg(dev, "Scanning for an NCB fingerprint...\n"); + + for (stride = 0; stride < search_area_size_in_strides; stride++) { + /* Compute the page and byte addresses. */ + page = stride * rom_geo->stride_size_in_pages; + byte = page * mtd->writesize; + + dev_dbg(dev, "Looking for a fingerprint in page 0x%x\n", page); + + /* + * Read the NCB fingerprint. The fingerprint is four bytes long + * and starts in the 12th byte of the page. + */ + chip->cmdfunc(mtd, NAND_CMD_READ0, 12, page); + chip->read_buf(mtd, buffer, strlen(fingerprint)); + + /* Look for the fingerprint. */ + if (!memcmp(buffer, fingerprint, strlen(fingerprint))) { + found_an_ncb_fingerprint = true; + break; + } + + } + + chip->select_chip(mtd, saved_chip_number); + + if (found_an_ncb_fingerprint) + dev_dbg(dev, "\tFound a fingerprint\n"); + else + dev_dbg(dev, "\tNo fingerprint found\n"); + return found_an_ncb_fingerprint; +} + +/* Writes a transcription stamp. */ +static int __devinit mx23_write_transcription_stamp(struct gpmi_nand_data *this) +{ + struct device *dev = this->dev; + struct boot_rom_geometry *rom_geo = &this->rom_geometry; + struct mtd_info *mtd = &this->mtd; + struct nand_chip *chip = &this->nand; + unsigned int block_size_in_pages; + unsigned int search_area_size_in_strides; + unsigned int search_area_size_in_pages; + unsigned int search_area_size_in_blocks; + unsigned int block; + unsigned int stride; + unsigned int page; + loff_t byte; + uint8_t *buffer = chip->buffers->databuf; + int saved_chip_number; + int status; + + /* Compute the search area geometry. */ + block_size_in_pages = mtd->erasesize / mtd->writesize; + search_area_size_in_strides = 1 << rom_geo->search_area_stride_exponent; + search_area_size_in_pages = search_area_size_in_strides * + rom_geo->stride_size_in_pages; + search_area_size_in_blocks = + (search_area_size_in_pages + (block_size_in_pages - 1)) / + block_size_in_pages; + + dev_dbg(dev, "Search Area Geometry :\n"); + dev_dbg(dev, "\tin Blocks : %u\n", search_area_size_in_blocks); + dev_dbg(dev, "\tin Strides: %u\n", search_area_size_in_strides); + dev_dbg(dev, "\tin Pages : %u\n", search_area_size_in_pages); + + /* Select chip 0. */ + saved_chip_number = this->current_chip; + chip->select_chip(mtd, 0); + + /* Loop over blocks in the first search area, erasing them. */ + dev_dbg(dev, "Erasing the search area...\n"); + + for (block = 0; block < search_area_size_in_blocks; block++) { + /* Compute the page address. */ + page = block * block_size_in_pages; + + /* Erase this block. */ + dev_dbg(dev, "\tErasing block 0x%x\n", block); + chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page); + chip->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1); + + /* Wait for the erase to finish. */ + status = chip->waitfunc(mtd, chip); + if (status & NAND_STATUS_FAIL) + dev_err(dev, "[%s] Erase failed.\n", __func__); + } + + /* Write the NCB fingerprint into the page buffer. */ + memset(buffer, ~0, mtd->writesize); + memset(chip->oob_poi, ~0, mtd->oobsize); + memcpy(buffer + 12, fingerprint, strlen(fingerprint)); + + /* Loop through the first search area, writing NCB fingerprints. */ + dev_dbg(dev, "Writing NCB fingerprints...\n"); + for (stride = 0; stride < search_area_size_in_strides; stride++) { + /* Compute the page and byte addresses. */ + page = stride * rom_geo->stride_size_in_pages; + byte = page * mtd->writesize; + + /* Write the first page of the current stride. */ + dev_dbg(dev, "Writing an NCB fingerprint in page 0x%x\n", page); + chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page); + chip->ecc.write_page_raw(mtd, chip, buffer); + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + + /* Wait for the write to finish. */ + status = chip->waitfunc(mtd, chip); + if (status & NAND_STATUS_FAIL) + dev_err(dev, "[%s] Write failed.\n", __func__); + } + + /* Deselect chip 0. */ + chip->select_chip(mtd, saved_chip_number); + return 0; +} + +static int __devinit mx23_boot_init(struct gpmi_nand_data *this) +{ + struct device *dev = this->dev; + struct nand_chip *chip = &this->nand; + struct mtd_info *mtd = &this->mtd; + unsigned int block_count; + unsigned int block; + int chipnr; + int page; + loff_t byte; + uint8_t block_mark; + int ret = 0; + + /* + * If control arrives here, we can't use block mark swapping, which + * means we're forced to use transcription. First, scan for the + * transcription stamp. If we find it, then we don't have to do + * anything -- the block marks are already transcribed. + */ + if (mx23_check_transcription_stamp(this)) + return 0; + + /* + * If control arrives here, we couldn't find a transcription stamp, so + * so we presume the block marks are in the conventional location. + */ + dev_dbg(dev, "Transcribing bad block marks...\n"); + + /* Compute the number of blocks in the entire medium. */ + block_count = chip->chipsize >> chip->phys_erase_shift; + + /* + * Loop over all the blocks in the medium, transcribing block marks as + * we go. + */ + for (block = 0; block < block_count; block++) { + /* + * Compute the chip, page and byte addresses for this block's + * conventional mark. + */ + chipnr = block >> (chip->chip_shift - chip->phys_erase_shift); + page = block << (chip->phys_erase_shift - chip->page_shift); + byte = block << chip->phys_erase_shift; + + /* Send the command to read the conventional block mark. */ + chip->select_chip(mtd, chipnr); + chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page); + block_mark = chip->read_byte(mtd); + chip->select_chip(mtd, -1); + + /* + * Check if the block is marked bad. If so, we need to mark it + * again, but this time the result will be a mark in the + * location where we transcribe block marks. + */ + if (block_mark != 0xff) { + dev_dbg(dev, "Transcribing mark in block %u\n", block); + ret = chip->block_markbad(mtd, byte); + if (ret) + dev_err(dev, "Failed to mark block bad with " + "ret %d\n", ret); + } + } + + /* Write the stamp that indicates we've transcribed the block marks. */ + mx23_write_transcription_stamp(this); + return 0; +} + +static int __devinit nand_boot_init(struct gpmi_nand_data *this) +{ + nand_boot_set_geometry(this); + + /* This is ROM arch-specific initilization before the BBT scanning. */ + if (GPMI_IS_MX23(this)) + return mx23_boot_init(this); + return 0; +} + +static int __devinit gpmi_set_geometry(struct gpmi_nand_data *this) +{ + int ret; + + /* Free the temporary DMA memory for reading ID. */ + gpmi_free_dma_buffer(this); + + /* Set up the NFC geometry which is used by BCH. */ + ret = bch_set_geometry(this); + if (ret) { + pr_err("set geometry ret : %d\n", ret); + return ret; + } + + /* Alloc the new DMA buffers according to the pagesize and oobsize */ + return gpmi_alloc_dma_buffer(this); +} + +static int gpmi_pre_bbt_scan(struct gpmi_nand_data *this) +{ + int ret; + + /* Set up swap_block_mark, must be set before the gpmi_set_geometry() */ + if (GPMI_IS_MX23(this)) + this->swap_block_mark = false; + else + this->swap_block_mark = true; + + /* Set up the medium geometry */ + ret = gpmi_set_geometry(this); + if (ret) + return ret; + + /* NAND boot init, depends on the gpmi_set_geometry(). */ + return nand_boot_init(this); +} + +static int gpmi_scan_bbt(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + struct gpmi_nand_data *this = chip->priv; + int ret; + + /* Prepare for the BBT scan. */ + ret = gpmi_pre_bbt_scan(this); + if (ret) + return ret; + + /* use the default BBT implementation */ + return nand_default_bbt(mtd); +} + +void gpmi_nfc_exit(struct gpmi_nand_data *this) +{ + nand_release(&this->mtd); + gpmi_free_dma_buffer(this); +} + +static int __devinit gpmi_nfc_init(struct gpmi_nand_data *this) +{ + struct gpmi_nand_platform_data *pdata = this->pdata; + struct mtd_info *mtd = &this->mtd; + struct nand_chip *chip = &this->nand; + int ret; + + /* init current chip */ + this->current_chip = -1; + + /* init the MTD data structures */ + mtd->priv = chip; + mtd->name = "gpmi-nand"; + mtd->owner = THIS_MODULE; + + /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */ + chip->priv = this; + chip->select_chip = gpmi_select_chip; + chip->cmd_ctrl = gpmi_cmd_ctrl; + chip->dev_ready = gpmi_dev_ready; + chip->read_byte = gpmi_read_byte; + chip->read_buf = gpmi_read_buf; + chip->write_buf = gpmi_write_buf; + chip->ecc.read_page = gpmi_ecc_read_page; + chip->ecc.write_page = gpmi_ecc_write_page; + chip->ecc.read_oob = gpmi_ecc_read_oob; + chip->ecc.write_oob = gpmi_ecc_write_oob; + chip->scan_bbt = gpmi_scan_bbt; + chip->badblock_pattern = &gpmi_bbt_descr; + chip->block_markbad = gpmi_block_markbad; + chip->options |= NAND_NO_SUBPAGE_WRITE; + chip->ecc.mode = NAND_ECC_HW; + chip->ecc.size = 1; + chip->ecc.layout = &gpmi_hw_ecclayout; + + /* Allocate a temporary DMA buffer for reading ID in the nand_scan() */ + this->bch_geometry.payload_size = 1024; + this->bch_geometry.auxiliary_size = 128; + ret = gpmi_alloc_dma_buffer(this); + if (ret) + goto err_out; + + ret = nand_scan(mtd, pdata->max_chip_count); + if (ret) { + pr_err("Chip scan failed\n"); + goto err_out; + } + + ret = mtd_device_parse_register(mtd, NULL, NULL, + pdata->partitions, pdata->partition_count); + if (ret) + goto err_out; + return 0; + +err_out: + gpmi_nfc_exit(this); + return ret; +} + +static int __devinit gpmi_nand_probe(struct platform_device *pdev) +{ + struct gpmi_nand_platform_data *pdata = pdev->dev.platform_data; + struct gpmi_nand_data *this; + int ret; + + this = kzalloc(sizeof(*this), GFP_KERNEL); + if (!this) { + pr_err("Failed to allocate per-device memory\n"); + return -ENOMEM; + } + + platform_set_drvdata(pdev, this); + this->pdev = pdev; + this->dev = &pdev->dev; + this->pdata = pdata; + + if (pdata->platform_init) { + ret = pdata->platform_init(); + if (ret) + goto platform_init_error; + } + + ret = acquire_resources(this); + if (ret) + goto exit_acquire_resources; + + ret = init_hardware(this); + if (ret) + goto exit_nfc_init; + + ret = gpmi_nfc_init(this); + if (ret) + goto exit_nfc_init; + + return 0; + +exit_nfc_init: + release_resources(this); +platform_init_error: +exit_acquire_resources: + platform_set_drvdata(pdev, NULL); + kfree(this); + return ret; +} + +static int __exit gpmi_nand_remove(struct platform_device *pdev) +{ + struct gpmi_nand_data *this = platform_get_drvdata(pdev); + + gpmi_nfc_exit(this); + release_resources(this); + platform_set_drvdata(pdev, NULL); + kfree(this); + return 0; +} + +static const struct platform_device_id gpmi_ids[] = { + { + .name = "imx23-gpmi-nand", + .driver_data = IS_MX23, + }, { + .name = "imx28-gpmi-nand", + .driver_data = IS_MX28, + }, {}, +}; + +static struct platform_driver gpmi_nand_driver = { + .driver = { + .name = "gpmi-nand", + }, + .probe = gpmi_nand_probe, + .remove = __exit_p(gpmi_nand_remove), + .id_table = gpmi_ids, +}; + +static int __init gpmi_nand_init(void) +{ + int err; + + err = platform_driver_register(&gpmi_nand_driver); + if (err == 0) + printk(KERN_INFO "GPMI NAND driver registered. (IMX)\n"); + else + pr_err("i.MX GPMI NAND driver registration failed\n"); + return err; +} + +static void __exit gpmi_nand_exit(void) +{ + platform_driver_unregister(&gpmi_nand_driver); +} + +module_init(gpmi_nand_init); +module_exit(gpmi_nand_exit); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("i.MX GPMI NAND Flash Controller Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.h b/drivers/mtd/nand/gpmi-nand/gpmi-nand.h new file mode 100644 index 0000000..e023bcc --- /dev/null +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.h @@ -0,0 +1,273 @@ +/* + * Freescale GPMI NAND Flash Driver + * + * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. + * Copyright (C) 2008 Embedded Alley Solutions, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef __DRIVERS_MTD_NAND_GPMI_NAND_H +#define __DRIVERS_MTD_NAND_GPMI_NAND_H + +#include +#include +#include +#include + +struct resources { + void *gpmi_regs; + void *bch_regs; + unsigned int bch_low_interrupt; + unsigned int bch_high_interrupt; + unsigned int dma_low_channel; + unsigned int dma_high_channel; + struct clk *clock; +}; + +/** + * struct bch_geometry - BCH geometry description. + * @gf_len: The length of Galois Field. (e.g., 13 or 14) + * @ecc_strength: A number that describes the strength of the ECC + * algorithm. + * @page_size: The size, in bytes, of a physical page, including + * both data and OOB. + * @metadata_size: The size, in bytes, of the metadata. + * @ecc_chunk_size: The size, in bytes, of a single ECC chunk. Note + * the first chunk in the page includes both data and + * metadata, so it's a bit larger than this value. + * @ecc_chunk_count: The number of ECC chunks in the page, + * @payload_size: The size, in bytes, of the payload buffer. + * @auxiliary_size: The size, in bytes, of the auxiliary buffer. + * @auxiliary_status_offset: The offset into the auxiliary buffer at which + * the ECC status appears. + * @block_mark_byte_offset: The byte offset in the ECC-based page view at + * which the underlying physical block mark appears. + * @block_mark_bit_offset: The bit offset into the ECC-based page view at + * which the underlying physical block mark appears. + */ +struct bch_geometry { + unsigned int gf_len; + unsigned int ecc_strength; + unsigned int page_size; + unsigned int metadata_size; + unsigned int ecc_chunk_size; + unsigned int ecc_chunk_count; + unsigned int payload_size; + unsigned int auxiliary_size; + unsigned int auxiliary_status_offset; + unsigned int block_mark_byte_offset; + unsigned int block_mark_bit_offset; +}; + +/** + * struct boot_rom_geometry - Boot ROM geometry description. + * @stride_size_in_pages: The size of a boot block stride, in pages. + * @search_area_stride_exponent: The logarithm to base 2 of the size of a + * search area in boot block strides. + */ +struct boot_rom_geometry { + unsigned int stride_size_in_pages; + unsigned int search_area_stride_exponent; +}; + +/* DMA operations types */ +enum dma_ops_type { + DMA_FOR_COMMAND = 1, + DMA_FOR_READ_DATA, + DMA_FOR_WRITE_DATA, + DMA_FOR_READ_ECC_PAGE, + DMA_FOR_WRITE_ECC_PAGE +}; + +/** + * struct nand_timing - Fundamental timing attributes for NAND. + * @data_setup_in_ns: The data setup time, in nanoseconds. Usually the + * maximum of tDS and tWP. A negative value + * indicates this characteristic isn't known. + * @data_hold_in_ns: The data hold time, in nanoseconds. Usually the + * maximum of tDH, tWH and tREH. A negative value + * indicates this characteristic isn't known. + * @address_setup_in_ns: The address setup time, in nanoseconds. Usually + * the maximum of tCLS, tCS and tALS. A negative + * value indicates this characteristic isn't known. + * @gpmi_sample_delay_in_ns: A GPMI-specific timing parameter. A negative value + * indicates this characteristic isn't known. + * @tREA_in_ns: tREA, in nanoseconds, from the data sheet. A + * negative value indicates this characteristic isn't + * known. + * @tRLOH_in_ns: tRLOH, in nanoseconds, from the data sheet. A + * negative value indicates this characteristic isn't + * known. + * @tRHOH_in_ns: tRHOH, in nanoseconds, from the data sheet. A + * negative value indicates this characteristic isn't + * known. + */ +struct nand_timing { + int8_t data_setup_in_ns; + int8_t data_hold_in_ns; + int8_t address_setup_in_ns; + int8_t gpmi_sample_delay_in_ns; + int8_t tREA_in_ns; + int8_t tRLOH_in_ns; + int8_t tRHOH_in_ns; +}; + +struct gpmi_nand_data { + /* System Interface */ + struct device *dev; + struct platform_device *pdev; + struct gpmi_nand_platform_data *pdata; + + /* Resources */ + struct resources resources; + + /* Flash Hardware */ + struct nand_timing timing; + + /* BCH */ + struct bch_geometry bch_geometry; + struct completion bch_done; + + /* NAND Boot issue */ + bool swap_block_mark; + struct boot_rom_geometry rom_geometry; + + /* MTD / NAND */ + struct nand_chip nand; + struct mtd_info mtd; + + /* General-use Variables */ + int current_chip; + unsigned int command_length; + + /* passed from upper layer */ + uint8_t *upper_buf; + int upper_len; + + /* for DMA operations */ + bool direct_dma_map_ok; + + struct scatterlist cmd_sgl; + char *cmd_buffer; + + struct scatterlist data_sgl; + char *data_buffer_dma; + + void *page_buffer_virt; + dma_addr_t page_buffer_phys; + unsigned int page_buffer_size; + + void *payload_virt; + dma_addr_t payload_phys; + + void *auxiliary_virt; + dma_addr_t auxiliary_phys; + + /* DMA channels */ +#define DMA_CHANS 8 + struct dma_chan *dma_chans[DMA_CHANS]; + struct mxs_dma_data dma_data; + enum dma_ops_type last_dma_type; + enum dma_ops_type dma_type; + struct completion dma_done; + + /* private */ + void *private; +}; + +/** + * struct gpmi_nfc_hardware_timing - GPMI hardware timing parameters. + * @data_setup_in_cycles: The data setup time, in cycles. + * @data_hold_in_cycles: The data hold time, in cycles. + * @address_setup_in_cycles: The address setup time, in cycles. + * @use_half_periods: Indicates the clock is running slowly, so the + * NFC DLL should use half-periods. + * @sample_delay_factor: The sample delay factor. + */ +struct gpmi_nfc_hardware_timing { + uint8_t data_setup_in_cycles; + uint8_t data_hold_in_cycles; + uint8_t address_setup_in_cycles; + bool use_half_periods; + uint8_t sample_delay_factor; +}; + +/** + * struct timing_threshod - Timing threshold + * @max_data_setup_cycles: The maximum number of data setup cycles that + * can be expressed in the hardware. + * @internal_data_setup_in_ns: The time, in ns, that the NFC hardware requires + * for data read internal setup. In the Reference + * Manual, see the chapter "High-Speed NAND + * Timing" for more details. + * @max_sample_delay_factor: The maximum sample delay factor that can be + * expressed in the hardware. + * @max_dll_clock_period_in_ns: The maximum period of the GPMI clock that the + * sample delay DLL hardware can possibly work + * with (the DLL is unusable with longer periods). + * If the full-cycle period is greater than HALF + * this value, the DLL must be configured to use + * half-periods. + * @max_dll_delay_in_ns: The maximum amount of delay, in ns, that the + * DLL can implement. + * @clock_frequency_in_hz: The clock frequency, in Hz, during the current + * I/O transaction. If no I/O transaction is in + * progress, this is the clock frequency during + * the most recent I/O transaction. + */ +struct timing_threshod { + const unsigned int max_chip_count; + const unsigned int max_data_setup_cycles; + const unsigned int internal_data_setup_in_ns; + const unsigned int max_sample_delay_factor; + const unsigned int max_dll_clock_period_in_ns; + const unsigned int max_dll_delay_in_ns; + unsigned long clock_frequency_in_hz; + +}; + +/* Common Services */ +extern int common_nfc_set_geometry(struct gpmi_nand_data *); +extern struct dma_chan *get_dma_chan(struct gpmi_nand_data *); +extern void prepare_data_dma(struct gpmi_nand_data *, + enum dma_data_direction dr); +extern int start_dma_without_bch_irq(struct gpmi_nand_data *, + struct dma_async_tx_descriptor *); +extern int start_dma_with_bch_irq(struct gpmi_nand_data *, + struct dma_async_tx_descriptor *); + +/* GPMI-NAND helper function library */ +extern int gpmi_init(struct gpmi_nand_data *); +extern void gpmi_clear_bch(struct gpmi_nand_data *); +extern void gpmi_dump_info(struct gpmi_nand_data *); +extern int bch_set_geometry(struct gpmi_nand_data *); +extern int gpmi_is_ready(struct gpmi_nand_data *, unsigned chip); +extern int gpmi_send_command(struct gpmi_nand_data *); +extern void gpmi_begin(struct gpmi_nand_data *); +extern void gpmi_end(struct gpmi_nand_data *); +extern int gpmi_read_data(struct gpmi_nand_data *); +extern int gpmi_send_data(struct gpmi_nand_data *); +extern int gpmi_send_page(struct gpmi_nand_data *, + dma_addr_t payload, dma_addr_t auxiliary); +extern int gpmi_read_page(struct gpmi_nand_data *, + dma_addr_t payload, dma_addr_t auxiliary); + +/* BCH : Status Block Completion Codes */ +#define STATUS_GOOD 0x00 +#define STATUS_ERASED 0xff +#define STATUS_UNCORRECTABLE 0xfe + +/* Use the platform_id to distinguish different Archs. */ +#define IS_MX23 0x1 +#define IS_MX28 0x2 +#define GPMI_IS_MX23(x) ((x)->pdev->id_entry->driver_data == IS_MX23) +#define GPMI_IS_MX28(x) ((x)->pdev->id_entry->driver_data == IS_MX28) +#endif -- cgit v0.10.2 From 9ce244b3fb416ce6600e05612ac46b9692dcc638 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:37 -0700 Subject: mtd: support writing OOB without ECC This fixes issues with `nandwrite -n -o' and the MEMWRITEOOB[64] ioctls on hardware that writes ECC when writing OOB. The problem arises as follows: `nandwrite -n' can write page data to flash without applying ECC, but when used with the `-o' option, ECC is applied (incorrectly), contrary to the `--noecc' option. I found that this is the case because my hardware computes and writes ECC data to flash upon either OOB write or page write. Thus, to support a proper "no ECC" write, my driver must know when we're performing a raw OOB write vs. a normal ECC OOB write. However, MTD does not pass any raw mode information to the write_oob functions. This patch addresses the problems by: 1) Passing MTD_OOB_RAW down to lower layers, instead of just defaulting to MTD_OOB_PLACE 2) Handling MTD_OOB_RAW within the NAND layer's `nand_do_write_oob' 3) Adding a new (replaceable) function pointer in struct ecc_ctrl; this function should support writing OOB without ECC data. Current hardware often can use the same OOB write function when writing either with or without ECC This was tested with nandsim as well as on actual SLC NAND. Signed-off-by: Brian Norris Cc: Jim Quinlan Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index b206254..bcb7f05 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -391,6 +391,7 @@ static int mtd_do_writeoob(struct file *file, struct mtd_info *mtd, uint64_t start, uint32_t length, void __user *ptr, uint32_t __user *retp) { + struct mtd_file_info *mfi = file->private_data; struct mtd_oob_ops ops; uint32_t retlen; int ret = 0; @@ -412,7 +413,7 @@ static int mtd_do_writeoob(struct file *file, struct mtd_info *mtd, ops.ooblen = length; ops.ooboffs = start & (mtd->writesize - 1); ops.datbuf = NULL; - ops.mode = MTD_OOB_PLACE; + ops.mode = (mfi->mode == MTD_MODE_RAW) ? MTD_OOB_RAW : MTD_OOB_PLACE; if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs)) return -EINVAL; diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 7f2691f..b61a7c7 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2404,7 +2404,11 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, chip->pagebuf = -1; nand_fill_oob(mtd, ops->oobbuf, ops->ooblen, ops); - status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask); + + if (ops->mode == MTD_OOB_RAW) + status = chip->ecc.write_oob_raw(mtd, chip, page & chip->pagemask); + else + status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask); if (status) return status; @@ -3380,6 +3384,10 @@ int nand_scan_tail(struct mtd_info *mtd) BUG(); } + /* For many systems, the standard OOB write also works for raw */ + if (!chip->ecc.write_oob_raw) + chip->ecc.write_oob_raw = chip->ecc.write_oob; + /* * The number of bytes available for a client to place data into * the out of band area. diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 85fef68..5f3fdd9 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -340,6 +340,7 @@ struct nand_hw_control { * @read_subpage: function to read parts of the page covered by ECC. * @write_page: function to write a page according to the ECC generator * requirements. + * @write_oob_raw: function to write chip OOB data without ECC * @read_oob: function to read chip OOB data * @write_oob: function to write chip OOB data */ @@ -368,6 +369,8 @@ struct nand_ecc_ctrl { uint32_t offs, uint32_t len, uint8_t *buf); void (*write_page)(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t *buf); + int (*write_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip, + int page); int (*read_oob)(struct mtd_info *mtd, struct nand_chip *chip, int page, int sndcmd); int (*write_oob)(struct mtd_info *mtd, struct nand_chip *chip, -- cgit v0.10.2 From e9195edc59f33e9cabdd32a2959e927806670f45 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:43 -0700 Subject: mtd: nand: document nand_chip.oob_poi Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 5f3fdd9..c7113a9 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -431,7 +431,8 @@ struct nand_buffers { * @chip_delay: [BOARDSPECIFIC] chip dependent delay for transferring * data from array to read regs (tR). * @state: [INTERN] the current state of the NAND device - * @oob_poi: poison value buffer + * @oob_poi: "poison value buffer," used for laying out OOB data + * before writing * @page_shift: [INTERN] number of address bits in a page (column * address bits). * @phys_erase_shift: [INTERN] number of address bits in a physical eraseblock -- cgit v0.10.2 From c46f6483d21e93400e4a110de7902830173d53b0 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:38 -0700 Subject: mtd: support reading OOB without ECC This fixes issues with `nanddump -n' and the MEMREADOOB[64] ioctls on hardware that performs error correction when reading only OOB data. A driver for such hardware needs to know when we're doing a RAW vs. a normal write, but mtd_do_read_oob does not pass such information to the lower layers (e.g., NAND). We should pass MTD_OOB_RAW or MTD_OOB_PLACE based on the MTD file mode. For now, most drivers can get away with just setting: chip->ecc.read_oob_raw = chip->ecc.read_oob This is done by default; but for systems that behave as described above, you must supply your own replacement function. This was tested with nandsim as well as on actual SLC NAND. Signed-off-by: Brian Norris Cc: Jim Quinlan Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index bcb7f05..d0eaef6 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -435,9 +435,11 @@ static int mtd_do_writeoob(struct file *file, struct mtd_info *mtd, return ret; } -static int mtd_do_readoob(struct mtd_info *mtd, uint64_t start, - uint32_t length, void __user *ptr, uint32_t __user *retp) +static int mtd_do_readoob(struct file *file, struct mtd_info *mtd, + uint64_t start, uint32_t length, void __user *ptr, + uint32_t __user *retp) { + struct mtd_file_info *mfi = file->private_data; struct mtd_oob_ops ops; int ret = 0; @@ -455,7 +457,7 @@ static int mtd_do_readoob(struct mtd_info *mtd, uint64_t start, ops.ooblen = length; ops.ooboffs = start & (mtd->writesize - 1); ops.datbuf = NULL; - ops.mode = MTD_OOB_PLACE; + ops.mode = (mfi->mode == MTD_MODE_RAW) ? MTD_OOB_RAW : MTD_OOB_PLACE; if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs)) return -EINVAL; @@ -716,7 +718,7 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) if (copy_from_user(&buf, argp, sizeof(buf))) ret = -EFAULT; else - ret = mtd_do_readoob(mtd, buf.start, buf.length, + ret = mtd_do_readoob(file, mtd, buf.start, buf.length, buf.ptr, &buf_user->start); break; } @@ -743,7 +745,7 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) if (copy_from_user(&buf, argp, sizeof(buf))) ret = -EFAULT; else - ret = mtd_do_readoob(mtd, buf.start, buf.length, + ret = mtd_do_readoob(file, mtd, buf.start, buf.length, (void __user *)(uintptr_t)buf.usr_ptr, &buf_user->length); break; @@ -1029,7 +1031,7 @@ static long mtd_compat_ioctl(struct file *file, unsigned int cmd, if (copy_from_user(&buf, argp, sizeof(buf))) ret = -EFAULT; else - ret = mtd_do_readoob(mtd, buf.start, + ret = mtd_do_readoob(file, mtd, buf.start, buf.length, compat_ptr(buf.ptr), &buf_user->start); break; diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index b61a7c7..ad40607 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1787,7 +1787,10 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, page = realpage & chip->pagemask; while (1) { - sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd); + if (ops->mode == MTD_OOB_RAW) + sndcmd = chip->ecc.read_oob_raw(mtd, chip, page, sndcmd); + else + sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd); len = min(len, readlen); buf = nand_transfer_oob(chip, buf, ops, len); @@ -3385,6 +3388,8 @@ int nand_scan_tail(struct mtd_info *mtd) } /* For many systems, the standard OOB write also works for raw */ + if (!chip->ecc.read_oob_raw) + chip->ecc.read_oob_raw = chip->ecc.read_oob; if (!chip->ecc.write_oob_raw) chip->ecc.write_oob_raw = chip->ecc.write_oob; diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index c7113a9..0b3d464 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -341,6 +341,7 @@ struct nand_hw_control { * @write_page: function to write a page according to the ECC generator * requirements. * @write_oob_raw: function to write chip OOB data without ECC + * @read_oob_raw: function to read chip OOB data without ECC * @read_oob: function to read chip OOB data * @write_oob: function to write chip OOB data */ @@ -371,6 +372,8 @@ struct nand_ecc_ctrl { const uint8_t *buf); int (*write_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip, int page); + int (*read_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip, + int page, int sndcmd); int (*read_oob)(struct mtd_info *mtd, struct nand_chip *chip, int page, int sndcmd); int (*write_oob)(struct mtd_info *mtd, struct nand_chip *chip, -- cgit v0.10.2 From 905c6bcdb42616da717a9bd6c0c5870dbd90b09e Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:39 -0700 Subject: mtd: move mtd_oob_mode_t to shared kernel/user space We will want to use the MTD_OOB_{PLACE,AUTO,RAW} modes in user-space applications through the introduction of new ioctls, so we should make this enum a shared type. This enum is now anonymous. Artem: tweaked the patch. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index de98791..493901a 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1351,7 +1351,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, struct mtd_ecc_stats stats; int read = 0, thislen, column, oobsize; size_t len = ops->ooblen; - mtd_oob_mode_t mode = ops->mode; + unsigned int mode = ops->mode; u_char *buf = ops->oobbuf; int ret = 0, readcmd; @@ -2074,7 +2074,7 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, u_char *oobbuf; size_t len = ops->ooblen; const u_char *buf = ops->oobbuf; - mtd_oob_mode_t mode = ops->mode; + unsigned int mode = ops->mode; to += ops->ooboffs; diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index ff7bae0..6882cd9 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -68,20 +68,6 @@ struct mtd_erase_region_info { unsigned long *lockmap; /* If keeping bitmap of locks */ }; -/* - * oob operation modes - * - * MTD_OOB_PLACE: oob data are placed at the given offset - * MTD_OOB_AUTO: oob data are automatically placed at the free areas - * which are defined by the ecclayout - * MTD_OOB_RAW: mode to read oob and data without doing ECC checking - */ -typedef enum { - MTD_OOB_PLACE, - MTD_OOB_AUTO, - MTD_OOB_RAW, -} mtd_oob_mode_t; - /** * struct mtd_oob_ops - oob operation operands * @mode: operation mode @@ -102,7 +88,7 @@ typedef enum { * OOB area. */ struct mtd_oob_ops { - mtd_oob_mode_t mode; + unsigned int mode; size_t len; size_t retlen; size_t ooblen; diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h index 3bdda5c..af42c7a 100644 --- a/include/mtd/mtd-abi.h +++ b/include/mtd/mtd-abi.h @@ -45,6 +45,21 @@ struct mtd_oob_buf64 { __u64 usr_ptr; }; +/* + * oob operation modes + * + * MTD_OOB_PLACE: oob data are placed at the given offset (default) + * MTD_OOB_AUTO: oob data are automatically placed at the free areas + * which are defined by the internal ecclayout + * MTD_OOB_RAW: mode to read or write oob and data without doing ECC + * checking + */ +enum { + MTD_OOB_PLACE = 0, + MTD_OOB_AUTO = 1, + MTD_OOB_RAW = 2, +}; + #define MTD_ABSENT 0 #define MTD_RAM 1 #define MTD_ROM 2 -- cgit v0.10.2 From 0612b9ddc2eeda014dd805c87c752b342d8f80f0 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:40 -0700 Subject: mtd: rename MTD_OOB_* to MTD_OPS_* These modes are not necessarily for OOB only. Particularly, MTD_OOB_RAW affected operations on in-band page data as well. To clarify these options and to emphasize that their effect is applied per-operation, we change the primary prefix to MTD_OPS_. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c index 8c97033..e9fad91 100644 --- a/drivers/mtd/devices/doc2000.c +++ b/drivers/mtd/devices/doc2000.c @@ -927,7 +927,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, uint8_t *buf = ops->oobbuf; size_t len = ops->len; - BUG_ON(ops->mode != MTD_OOB_PLACE); + BUG_ON(ops->mode != MTD_OPS_PLACE_OOB); ofs += ops->ooboffs; @@ -1091,7 +1091,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, struct DiskOnChip *this = mtd->priv; int ret; - BUG_ON(ops->mode != MTD_OOB_PLACE); + BUG_ON(ops->mode != MTD_OPS_PLACE_OOB); mutex_lock(&this->lock); ret = doc_write_oob_nolock(mtd, ofs + ops->ooboffs, ops->len, diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c index 3d2b459..a3f7a27 100644 --- a/drivers/mtd/devices/doc2001.c +++ b/drivers/mtd/devices/doc2001.c @@ -631,7 +631,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, uint8_t *buf = ops->oobbuf; size_t len = ops->len; - BUG_ON(ops->mode != MTD_OOB_PLACE); + BUG_ON(ops->mode != MTD_OPS_PLACE_OOB); ofs += ops->ooboffs; @@ -689,7 +689,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, uint8_t *buf = ops->oobbuf; size_t len = ops->len; - BUG_ON(ops->mode != MTD_OOB_PLACE); + BUG_ON(ops->mode != MTD_OPS_PLACE_OOB); ofs += ops->ooboffs; diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c index d28c9d9..99351bc 100644 --- a/drivers/mtd/devices/doc2001plus.c +++ b/drivers/mtd/devices/doc2001plus.c @@ -834,7 +834,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, uint8_t *buf = ops->oobbuf; size_t len = ops->len; - BUG_ON(ops->mode != MTD_OOB_PLACE); + BUG_ON(ops->mode != MTD_OPS_PLACE_OOB); ofs += ops->ooboffs; @@ -919,7 +919,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, uint8_t *buf = ops->oobbuf; size_t len = ops->len; - BUG_ON(ops->mode != MTD_OOB_PLACE); + BUG_ON(ops->mode != MTD_OPS_PLACE_OOB); ofs += ops->ooboffs; diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c index 21aa981..652065e 100644 --- a/drivers/mtd/inftlcore.c +++ b/drivers/mtd/inftlcore.c @@ -152,7 +152,7 @@ int inftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len, struct mtd_oob_ops ops; int res; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = offs & (mtd->writesize - 1); ops.ooblen = len; ops.oobbuf = buf; @@ -172,7 +172,7 @@ int inftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len, struct mtd_oob_ops ops; int res; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = offs & (mtd->writesize - 1); ops.ooblen = len; ops.oobbuf = buf; @@ -192,7 +192,7 @@ static int inftl_write(struct mtd_info *mtd, loff_t offs, size_t len, struct mtd_oob_ops ops; int res; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = offs; ops.ooblen = mtd->oobsize; ops.oobbuf = oob; diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index d0eaef6..9b76438 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -221,7 +221,7 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t { struct mtd_oob_ops ops; - ops.mode = MTD_OOB_RAW; + ops.mode = MTD_OPS_RAW; ops.datbuf = kbuf; ops.oobbuf = NULL; ops.len = len; @@ -317,7 +317,7 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count { struct mtd_oob_ops ops; - ops.mode = MTD_OOB_RAW; + ops.mode = MTD_OPS_RAW; ops.datbuf = kbuf; ops.oobbuf = NULL; ops.ooboffs = 0; @@ -413,7 +413,8 @@ static int mtd_do_writeoob(struct file *file, struct mtd_info *mtd, ops.ooblen = length; ops.ooboffs = start & (mtd->writesize - 1); ops.datbuf = NULL; - ops.mode = (mfi->mode == MTD_MODE_RAW) ? MTD_OOB_RAW : MTD_OOB_PLACE; + ops.mode = (mfi->mode == MTD_MODE_RAW) ? MTD_OPS_RAW : + MTD_OPS_PLACE_OOB; if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs)) return -EINVAL; @@ -457,7 +458,8 @@ static int mtd_do_readoob(struct file *file, struct mtd_info *mtd, ops.ooblen = length; ops.ooboffs = start & (mtd->writesize - 1); ops.datbuf = NULL; - ops.mode = (mfi->mode == MTD_MODE_RAW) ? MTD_OOB_RAW : MTD_OOB_PLACE; + ops.mode = (mfi->mode == MTD_MODE_RAW) ? MTD_OPS_RAW : + MTD_OPS_PLACE_OOB; if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs)) return -EINVAL; diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index c90b7ba..cd7785a 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -130,7 +130,7 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from, if (ops->oobbuf) { size_t len, pages; - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) len = mtd->oobavail; else len = mtd->oobsize; diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index 9961063..910309f 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -350,7 +350,7 @@ static int mtdswap_read_markers(struct mtdswap_dev *d, struct swap_eb *eb) ops.oobbuf = d->oob_buf; ops.ooboffs = 0; ops.datbuf = NULL; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ret = mtdswap_read_oob(d, offset, &ops); @@ -389,7 +389,7 @@ static int mtdswap_write_marker(struct mtdswap_dev *d, struct swap_eb *eb, ops.ooboffs = 0; ops.oobbuf = (uint8_t *)&n; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.datbuf = NULL; if (marker == MTDSWAP_TYPE_CLEAN) { @@ -931,7 +931,7 @@ static unsigned int mtdswap_eblk_passes(struct mtdswap_dev *d, struct mtd_oob_ops ops; int ret; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = mtd->writesize; ops.ooblen = mtd->ecclayout->oobavail; ops.ooboffs = 0; diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c index 5c0fe0d..071b634 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -1104,7 +1104,7 @@ gpmi_ecc_write_oob(struct mtd_info *mtd, struct nand_chip *chip, int page) * The BCH will use all the (page + oob). * Our gpmi_hw_ecclayout can only prohibit the JFFS2 to write the oob. * But it can not stop some ioctls such MEMWRITEOOB which uses - * MTD_OOB_PLACE. So We have to implement this function to prohibit + * MTD_OPS_PLACE_OOB. So We have to implement this function to prohibit * these ioctls too. */ return -EPERM; diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index ad40607..686b557 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1382,12 +1382,12 @@ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob, { switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_RAW: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_RAW: memcpy(oob, chip->oob_poi + ops->ooboffs, len); return oob + len; - case MTD_OOB_AUTO: { + case MTD_OPS_AUTO_OOB: { struct nand_oobfree *free = chip->ecc.layout->oobfree; uint32_t boffs = 0, roffs = ops->ooboffs; size_t bytes = 0; @@ -1437,7 +1437,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, int ret = 0; uint32_t readlen = ops->len; uint32_t oobreadlen = ops->ooblen; - uint32_t max_oobsize = ops->mode == MTD_OOB_AUTO ? + uint32_t max_oobsize = ops->mode == MTD_OPS_AUTO_OOB ? mtd->oobavail : mtd->oobsize; uint8_t *bufpoi, *oob, *buf; @@ -1469,7 +1469,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, } /* Now read the page into the buffer */ - if (unlikely(ops->mode == MTD_OOB_RAW)) + if (unlikely(ops->mode == MTD_OPS_RAW)) ret = chip->ecc.read_page_raw(mtd, chip, bufpoi, page); else if (!aligned && NAND_SUBPAGE_READ(chip) && !oob) @@ -1759,7 +1759,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, stats = mtd->ecc_stats; - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) len = chip->ecc.layout->oobavail; else len = mtd->oobsize; @@ -1787,7 +1787,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, page = realpage & chip->pagemask; while (1) { - if (ops->mode == MTD_OOB_RAW) + if (ops->mode == MTD_OPS_RAW) sndcmd = chip->ecc.read_oob_raw(mtd, chip, page, sndcmd); else sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd); @@ -1865,9 +1865,9 @@ static int nand_read_oob(struct mtd_info *mtd, loff_t from, nand_get_device(chip, mtd, FL_READING); switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_AUTO: - case MTD_OOB_RAW: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_AUTO_OOB: + case MTD_OPS_RAW: break; default: @@ -2113,12 +2113,12 @@ static uint8_t *nand_fill_oob(struct mtd_info *mtd, uint8_t *oob, size_t len, switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_RAW: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_RAW: memcpy(chip->oob_poi + ops->ooboffs, oob, len); return oob + len; - case MTD_OOB_AUTO: { + case MTD_OPS_AUTO_OOB: { struct nand_oobfree *free = chip->ecc.layout->oobfree; uint32_t boffs = 0, woffs = ops->ooboffs; size_t bytes = 0; @@ -2167,7 +2167,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, uint32_t writelen = ops->len; uint32_t oobwritelen = ops->ooblen; - uint32_t oobmaxlen = ops->mode == MTD_OOB_AUTO ? + uint32_t oobmaxlen = ops->mode == MTD_OPS_AUTO_OOB ? mtd->oobavail : mtd->oobsize; uint8_t *oob = ops->oobbuf; @@ -2236,7 +2236,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, } ret = chip->write_page(mtd, chip, wbuf, page, cached, - (ops->mode == MTD_OOB_RAW)); + (ops->mode == MTD_OPS_RAW)); if (ret) break; @@ -2356,7 +2356,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int)to, (int)ops->ooblen); - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) len = chip->ecc.layout->oobavail; else len = mtd->oobsize; @@ -2408,7 +2408,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, nand_fill_oob(mtd, ops->oobbuf, ops->ooblen, ops); - if (ops->mode == MTD_OOB_RAW) + if (ops->mode == MTD_OPS_RAW) status = chip->ecc.write_oob_raw(mtd, chip, page & chip->pagemask); else status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask); @@ -2445,9 +2445,9 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to, nand_get_device(chip, mtd, FL_WRITING); switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_AUTO: - case MTD_OOB_RAW: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_AUTO_OOB: + case MTD_OPS_RAW: break; default: diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 6aa8125..c488bcb 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -302,7 +302,7 @@ static int scan_read_raw_oob(struct mtd_info *mtd, uint8_t *buf, loff_t offs, struct mtd_oob_ops ops; int res; - ops.mode = MTD_OOB_RAW; + ops.mode = MTD_OPS_RAW; ops.ooboffs = 0; ops.ooblen = mtd->oobsize; @@ -350,7 +350,7 @@ static int scan_write_bbt(struct mtd_info *mtd, loff_t offs, size_t len, { struct mtd_oob_ops ops; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = 0; ops.ooblen = mtd->oobsize; ops.datbuf = buf; @@ -433,7 +433,7 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd, ops.oobbuf = buf; ops.ooboffs = 0; ops.datbuf = NULL; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; for (j = 0; j < len; j++) { /* @@ -672,7 +672,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, ops.ooblen = mtd->oobsize; ops.ooboffs = 0; ops.datbuf = NULL; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; if (!rcode) rcode = 0xff; diff --git a/drivers/mtd/nand/sm_common.c b/drivers/mtd/nand/sm_common.c index b6332e8..2c438ef 100644 --- a/drivers/mtd/nand/sm_common.c +++ b/drivers/mtd/nand/sm_common.c @@ -47,7 +47,7 @@ static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs) /* As long as this function is called on erase block boundaries it will work correctly for 256 byte nand */ - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = 0; ops.ooblen = mtd->oobsize; ops.oobbuf = (void *)&oob; diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c index 93d6fc6..272e3c0 100644 --- a/drivers/mtd/nftlcore.c +++ b/drivers/mtd/nftlcore.c @@ -147,7 +147,7 @@ int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len, struct mtd_oob_ops ops; int res; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = offs & mask; ops.ooblen = len; ops.oobbuf = buf; @@ -168,7 +168,7 @@ int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len, struct mtd_oob_ops ops; int res; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = offs & mask; ops.ooblen = len; ops.oobbuf = buf; @@ -191,7 +191,7 @@ static int nftl_write(struct mtd_info *mtd, loff_t offs, size_t len, struct mtd_oob_ops ops; int res; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooboffs = offs & mask; ops.ooblen = mtd->oobsize; ops.oobbuf = oob; diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 493901a..a52aa0f 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1125,7 +1125,7 @@ static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from, pr_debug("%s: from = 0x%08x, len = %i\n", __func__, (unsigned int)from, (int)len); - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) oobsize = this->ecclayout->oobavail; else oobsize = mtd->oobsize; @@ -1170,7 +1170,7 @@ static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from, thisooblen = oobsize - oobcolumn; thisooblen = min_t(int, thisooblen, ooblen - oobread); - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen); else this->read_bufferram(mtd, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen); @@ -1229,7 +1229,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, pr_debug("%s: from = 0x%08x, len = %i\n", __func__, (unsigned int)from, (int)len); - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) oobsize = this->ecclayout->oobavail; else oobsize = mtd->oobsize; @@ -1291,7 +1291,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, thisooblen = oobsize - oobcolumn; thisooblen = min_t(int, thisooblen, ooblen - oobread); - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen); else this->read_bufferram(mtd, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen); @@ -1363,7 +1363,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, /* Initialize return length value */ ops->oobretlen = 0; - if (mode == MTD_OOB_AUTO) + if (mode == MTD_OPS_AUTO_OOB) oobsize = this->ecclayout->oobavail; else oobsize = mtd->oobsize; @@ -1409,7 +1409,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, break; } - if (mode == MTD_OOB_AUTO) + if (mode == MTD_OPS_AUTO_OOB) onenand_transfer_auto_oob(mtd, buf, column, thislen); else this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen); @@ -1487,10 +1487,10 @@ static int onenand_read_oob(struct mtd_info *mtd, loff_t from, int ret; switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_AUTO: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_AUTO_OOB: break; - case MTD_OOB_RAW: + case MTD_OPS_RAW: /* Not implemented yet */ default: return -EINVAL; @@ -1908,7 +1908,7 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, if (!len) return 0; - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) oobsize = this->ecclayout->oobavail; else oobsize = mtd->oobsize; @@ -1945,7 +1945,7 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, /* We send data to spare ram with oobsize * to prevent byte access */ memset(oobbuf, 0xff, mtd->oobsize); - if (ops->mode == MTD_OOB_AUTO) + if (ops->mode == MTD_OPS_AUTO_OOB) onenand_fill_auto_oob(mtd, oobbuf, oob, oobcolumn, thisooblen); else memcpy(oobbuf + oobcolumn, oob, thisooblen); @@ -2084,7 +2084,7 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, /* Initialize retlen, in case of early exit */ ops->oobretlen = 0; - if (mode == MTD_OOB_AUTO) + if (mode == MTD_OPS_AUTO_OOB) oobsize = this->ecclayout->oobavail; else oobsize = mtd->oobsize; @@ -2128,7 +2128,7 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, /* We send data to spare ram with oobsize * to prevent byte access */ memset(oobbuf, 0xff, mtd->oobsize); - if (mode == MTD_OOB_AUTO) + if (mode == MTD_OPS_AUTO_OOB) onenand_fill_auto_oob(mtd, oobbuf, buf, column, thislen); else memcpy(oobbuf + column, buf, thislen); @@ -2217,10 +2217,10 @@ static int onenand_write_oob(struct mtd_info *mtd, loff_t to, int ret; switch (ops->mode) { - case MTD_OOB_PLACE: - case MTD_OOB_AUTO: + case MTD_OPS_PLACE_OOB: + case MTD_OPS_AUTO_OOB: break; - case MTD_OOB_RAW: + case MTD_OPS_RAW: /* Not implemented yet */ default: return -EINVAL; @@ -2603,7 +2603,7 @@ static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) struct bbm_info *bbm = this->bbm; u_char buf[2] = {0, 0}; struct mtd_oob_ops ops = { - .mode = MTD_OOB_PLACE, + .mode = MTD_OPS_PLACE_OOB, .ooblen = 2, .oobbuf = buf, .ooboffs = 0, @@ -3171,7 +3171,7 @@ static int do_otp_lock(struct mtd_info *mtd, loff_t from, size_t len, this->command(mtd, ONENAND_CMD_RESET, 0, 0); this->wait(mtd, FL_RESETING); } else { - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooblen = len; ops.oobbuf = buf; ops.ooboffs = 0; @@ -3677,7 +3677,7 @@ static int flexonenand_check_blocks_erased(struct mtd_info *mtd, int start, int int i, ret; int block; struct mtd_oob_ops ops = { - .mode = MTD_OOB_PLACE, + .mode = MTD_OPS_PLACE_OOB, .ooboffs = 0, .ooblen = mtd->oobsize, .datbuf = NULL, diff --git a/drivers/mtd/onenand/onenand_bbt.c b/drivers/mtd/onenand/onenand_bbt.c index 3b9a2a9..09956c4 100644 --- a/drivers/mtd/onenand/onenand_bbt.c +++ b/drivers/mtd/onenand/onenand_bbt.c @@ -80,7 +80,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr startblock = 0; from = 0; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.ooblen = readlen; ops.oobbuf = buf; ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0; diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index 311a9e3..d927641 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -256,7 +256,7 @@ static int sm_read_sector(struct sm_ftl *ftl, if (!oob) oob = &tmp_oob; - ops.mode = ftl->smallpagenand ? MTD_OOB_RAW : MTD_OOB_PLACE; + ops.mode = ftl->smallpagenand ? MTD_OPS_RAW : MTD_OPS_PLACE_OOB; ops.ooboffs = 0; ops.ooblen = SM_OOB_SIZE; ops.oobbuf = (void *)oob; @@ -336,7 +336,7 @@ static int sm_write_sector(struct sm_ftl *ftl, if (ftl->unstable) return -EIO; - ops.mode = ftl->smallpagenand ? MTD_OOB_RAW : MTD_OOB_PLACE; + ops.mode = ftl->smallpagenand ? MTD_OPS_RAW : MTD_OPS_PLACE_OOB; ops.len = SM_SECTOR_SIZE; ops.datbuf = buffer; ops.ooboffs = 0; diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c index 5f917f0..976e3d2 100644 --- a/drivers/mtd/ssfdc.c +++ b/drivers/mtd/ssfdc.c @@ -169,7 +169,7 @@ static int read_raw_oob(struct mtd_info *mtd, loff_t offs, uint8_t *buf) struct mtd_oob_ops ops; int ret; - ops.mode = MTD_OOB_RAW; + ops.mode = MTD_OPS_RAW; ops.ooboffs = 0; ops.ooblen = OOB_SIZE; ops.oobbuf = buf; diff --git a/drivers/mtd/tests/mtd_oobtest.c b/drivers/mtd/tests/mtd_oobtest.c index dec92ae..6bcff42 100644 --- a/drivers/mtd/tests/mtd_oobtest.c +++ b/drivers/mtd/tests/mtd_oobtest.c @@ -131,7 +131,7 @@ static int write_eraseblock(int ebnum) for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) { set_random_data(writebuf, use_len); - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = use_len; @@ -184,7 +184,7 @@ static int verify_eraseblock(int ebnum) for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) { set_random_data(writebuf, use_len); - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = use_len; @@ -211,7 +211,7 @@ static int verify_eraseblock(int ebnum) if (use_offset != 0 || use_len < mtd->ecclayout->oobavail) { int k; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = mtd->ecclayout->oobavail; @@ -276,7 +276,7 @@ static int verify_eraseblock_in_one_go(int ebnum) size_t len = mtd->ecclayout->oobavail * pgcnt; set_random_data(writebuf, len); - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = len; @@ -507,7 +507,7 @@ static int __init mtd_oobtest_init(void) addr0 += mtd->erasesize; /* Attempt to write off end of OOB */ - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = 1; @@ -527,7 +527,7 @@ static int __init mtd_oobtest_init(void) } /* Attempt to read off end of OOB */ - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = 1; @@ -551,7 +551,7 @@ static int __init mtd_oobtest_init(void) "block is bad\n"); else { /* Attempt to write off end of device */ - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = mtd->ecclayout->oobavail + 1; @@ -571,7 +571,7 @@ static int __init mtd_oobtest_init(void) } /* Attempt to read off end of device */ - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = mtd->ecclayout->oobavail + 1; @@ -595,7 +595,7 @@ static int __init mtd_oobtest_init(void) goto out; /* Attempt to write off end of device */ - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = mtd->ecclayout->oobavail; @@ -615,7 +615,7 @@ static int __init mtd_oobtest_init(void) } /* Attempt to read off end of device */ - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = mtd->ecclayout->oobavail; @@ -655,7 +655,7 @@ static int __init mtd_oobtest_init(void) addr = (i + 1) * mtd->erasesize - mtd->writesize; for (pg = 0; pg < cnt; ++pg) { set_random_data(writebuf, sz); - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = sz; @@ -683,7 +683,7 @@ static int __init mtd_oobtest_init(void) continue; set_random_data(writebuf, mtd->ecclayout->oobavail * 2); addr = (i + 1) * mtd->erasesize - mtd->writesize; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = mtd->ecclayout->oobavail * 2; diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c index 836792d..587e1e3 100644 --- a/drivers/mtd/tests/mtd_readtest.c +++ b/drivers/mtd/tests/mtd_readtest.c @@ -66,7 +66,7 @@ static int read_eraseblock_by_page(int ebnum) if (mtd->oobsize) { struct mtd_oob_ops ops; - ops.mode = MTD_OOB_PLACE; + ops.mode = MTD_OPS_PLACE_OOB; ops.len = 0; ops.retlen = 0; ops.ooblen = mtd->oobsize; diff --git a/drivers/staging/spectra/lld_mtd.c b/drivers/staging/spectra/lld_mtd.c index 2bd3466..a9c309a 100644 --- a/drivers/staging/spectra/lld_mtd.c +++ b/drivers/staging/spectra/lld_mtd.c @@ -340,7 +340,7 @@ u16 mtd_Read_Page_Main_Spare(u8 *read_data, u32 Block, struct mtd_oob_ops ops; int ret; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.datbuf = read_data; ops.len = DeviceInfo.wPageDataSize; ops.oobbuf = read_data + DeviceInfo.wPageDataSize + BTSIG_OFFSET; @@ -400,7 +400,7 @@ u16 mtd_Write_Page_Main_Spare(u8 *write_data, u32 Block, struct mtd_oob_ops ops; int ret; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.datbuf = write_data; ops.len = DeviceInfo.wPageDataSize; ops.oobbuf = write_data + DeviceInfo.wPageDataSize + BTSIG_OFFSET; @@ -473,7 +473,7 @@ u16 mtd_Read_Page_Spare(u8 *read_data, u32 Block, struct mtd_oob_ops ops; int ret; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.datbuf = NULL; ops.len = 0; ops.oobbuf = read_data; diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c index a10fb24..b09e51d 100644 --- a/fs/jffs2/wbuf.c +++ b/fs/jffs2/wbuf.c @@ -1025,7 +1025,7 @@ int jffs2_check_oob_empty(struct jffs2_sb_info *c, int cmlen = min_t(int, c->oobavail, OOB_CM_SIZE); struct mtd_oob_ops ops; - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.ooblen = NR_OOB_SCAN_PAGES * c->oobavail; ops.oobbuf = c->oobbuf; ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0; @@ -1068,7 +1068,7 @@ int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct mtd_oob_ops ops; int ret, cmlen = min_t(int, c->oobavail, OOB_CM_SIZE); - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.ooblen = cmlen; ops.oobbuf = c->oobbuf; ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0; @@ -1094,7 +1094,7 @@ int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct mtd_oob_ops ops; int cmlen = min_t(int, c->oobavail, OOB_CM_SIZE); - ops.mode = MTD_OOB_AUTO; + ops.mode = MTD_OPS_AUTO_OOB; ops.ooblen = cmlen; ops.oobbuf = (uint8_t *)&oob_cleanmarker; ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0; diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 6882cd9..c2047b8 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -79,7 +79,7 @@ struct mtd_erase_region_info { * @ooblen: number of oob bytes to write/read * @oobretlen: number of oob bytes written/read * @ooboffs: offset of oob data in the oob area (only relevant when - * mode = MTD_OOB_PLACE) + * mode = MTD_OPS_PLACE_OOB) * @datbuf: data buffer - if NULL only oob data are read/written * @oobbuf: oob data buffer * diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h index af42c7a..d30990e 100644 --- a/include/mtd/mtd-abi.h +++ b/include/mtd/mtd-abi.h @@ -46,18 +46,18 @@ struct mtd_oob_buf64 { }; /* - * oob operation modes + * MTD operation modes * - * MTD_OOB_PLACE: oob data are placed at the given offset (default) - * MTD_OOB_AUTO: oob data are automatically placed at the free areas - * which are defined by the internal ecclayout - * MTD_OOB_RAW: mode to read or write oob and data without doing ECC + * MTD_OPS_PLACE_OOB: oob data are placed at the given offset (default) + * MTD_OPS_AUTO_OOB: oob data are automatically placed at the free areas + * which are defined by the internal ecclayout + * MTD_OPS_RAW: mode to read or write oob and data without doing ECC * checking */ enum { - MTD_OOB_PLACE = 0, - MTD_OOB_AUTO = 1, - MTD_OOB_RAW = 2, + MTD_OPS_PLACE_OOB = 0, + MTD_OPS_AUTO_OOB = 1, + MTD_OPS_RAW = 2, }; #define MTD_ABSENT 0 -- cgit v0.10.2 From beb133fc165e1289c858d8f952b982b7d0b313cd Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:41 -0700 Subject: mtd: rename MTD_MODE_* to MTD_FILE_MODE_* These modes hold their state only for the life of their file descriptor, and they overlap functionality with the MTD_OPS_* modes. Particularly, MTD_MODE_RAW and MTD_OPS_RAW cover the same function: to provide raw (i.e., without ECC) access to the flash. In fact, although it may not be clear, MTD_MODE_RAW implied that operations should enable the MTD_OPS_RAW mode. Thus, we should be specific on what each mode means. This is a start, where MTD_FILE_MODE_* actually represents a "file mode," not necessarily a true global MTD mode. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 9b76438..4004f2b 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -211,13 +211,13 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t len = min_t(size_t, count, size); switch (mfi->mode) { - case MTD_MODE_OTP_FACTORY: + case MTD_FILE_MODE_OTP_FACTORY: ret = mtd->read_fact_prot_reg(mtd, *ppos, len, &retlen, kbuf); break; - case MTD_MODE_OTP_USER: + case MTD_FILE_MODE_OTP_USER: ret = mtd->read_user_prot_reg(mtd, *ppos, len, &retlen, kbuf); break; - case MTD_MODE_RAW: + case MTD_FILE_MODE_RAW: { struct mtd_oob_ops ops; @@ -302,10 +302,10 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count } switch (mfi->mode) { - case MTD_MODE_OTP_FACTORY: + case MTD_FILE_MODE_OTP_FACTORY: ret = -EROFS; break; - case MTD_MODE_OTP_USER: + case MTD_FILE_MODE_OTP_USER: if (!mtd->write_user_prot_reg) { ret = -EOPNOTSUPP; break; @@ -313,7 +313,7 @@ static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count ret = mtd->write_user_prot_reg(mtd, *ppos, len, &retlen, kbuf); break; - case MTD_MODE_RAW: + case MTD_FILE_MODE_RAW: { struct mtd_oob_ops ops; @@ -368,13 +368,13 @@ static int otp_select_filemode(struct mtd_file_info *mfi, int mode) if (!mtd->read_fact_prot_reg) ret = -EOPNOTSUPP; else - mfi->mode = MTD_MODE_OTP_FACTORY; + mfi->mode = MTD_FILE_MODE_OTP_FACTORY; break; case MTD_OTP_USER: if (!mtd->read_fact_prot_reg) ret = -EOPNOTSUPP; else - mfi->mode = MTD_MODE_OTP_USER; + mfi->mode = MTD_FILE_MODE_OTP_USER; break; default: ret = -EINVAL; @@ -413,7 +413,7 @@ static int mtd_do_writeoob(struct file *file, struct mtd_info *mtd, ops.ooblen = length; ops.ooboffs = start & (mtd->writesize - 1); ops.datbuf = NULL; - ops.mode = (mfi->mode == MTD_MODE_RAW) ? MTD_OPS_RAW : + ops.mode = (mfi->mode == MTD_FILE_MODE_RAW) ? MTD_OPS_RAW : MTD_OPS_PLACE_OOB; if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs)) @@ -458,7 +458,7 @@ static int mtd_do_readoob(struct file *file, struct mtd_info *mtd, ops.ooblen = length; ops.ooboffs = start & (mtd->writesize - 1); ops.datbuf = NULL; - ops.mode = (mfi->mode == MTD_MODE_RAW) ? MTD_OPS_RAW : + ops.mode = (mfi->mode == MTD_FILE_MODE_RAW) ? MTD_OPS_RAW : MTD_OPS_PLACE_OOB; if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs)) @@ -849,7 +849,7 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) if (copy_from_user(&mode, argp, sizeof(int))) return -EFAULT; - mfi->mode = MTD_MODE_NORMAL; + mfi->mode = MTD_FILE_MODE_NORMAL; ret = otp_select_filemode(mfi, mode); @@ -865,11 +865,11 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) return -ENOMEM; ret = -EOPNOTSUPP; switch (mfi->mode) { - case MTD_MODE_OTP_FACTORY: + case MTD_FILE_MODE_OTP_FACTORY: if (mtd->get_fact_prot_info) ret = mtd->get_fact_prot_info(mtd, buf, 4096); break; - case MTD_MODE_OTP_USER: + case MTD_FILE_MODE_OTP_USER: if (mtd->get_user_prot_info) ret = mtd->get_user_prot_info(mtd, buf, 4096); break; @@ -893,7 +893,7 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) { struct otp_info oinfo; - if (mfi->mode != MTD_MODE_OTP_USER) + if (mfi->mode != MTD_FILE_MODE_OTP_USER) return -EINVAL; if (copy_from_user(&oinfo, argp, sizeof(oinfo))) return -EFAULT; @@ -937,17 +937,17 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) mfi->mode = 0; switch(arg) { - case MTD_MODE_OTP_FACTORY: - case MTD_MODE_OTP_USER: + case MTD_FILE_MODE_OTP_FACTORY: + case MTD_FILE_MODE_OTP_USER: ret = otp_select_filemode(mfi, arg); break; - case MTD_MODE_RAW: + case MTD_FILE_MODE_RAW: if (!mtd->read_oob || !mtd->write_oob) return -EOPNOTSUPP; mfi->mode = arg; - case MTD_MODE_NORMAL: + case MTD_FILE_MODE_NORMAL: break; default: ret = -EINVAL; diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h index d30990e..1885aa9 100644 --- a/include/mtd/mtd-abi.h +++ b/include/mtd/mtd-abi.h @@ -200,10 +200,10 @@ struct mtd_ecc_stats { * Read/write file modes for access to MTD */ enum mtd_file_modes { - MTD_MODE_NORMAL = MTD_OTP_OFF, - MTD_MODE_OTP_FACTORY = MTD_OTP_FACTORY, - MTD_MODE_OTP_USER = MTD_OTP_USER, - MTD_MODE_RAW, + MTD_FILE_MODE_NORMAL = MTD_OTP_OFF, + MTD_FILE_MODE_OTP_FACTORY = MTD_OTP_FACTORY, + MTD_FILE_MODE_OTP_USER = MTD_OTP_USER, + MTD_FILE_MODE_RAW, }; #endif /* __MTD_ABI_H__ */ -- cgit v0.10.2 From e99d8b089a6c6fd72f022168e3bf8f22d4e5e137 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Fri, 9 Sep 2011 09:59:03 -0700 Subject: mtd: add MEMWRITE ioctl Implement a new ioctl for writing both page data and OOB to flash at the same time. This ioctl is intended to be a generic interface that can replace other ioctls (MEMWRITEOOB and MEMWRITEOOB64) and cover the functionality of several other old ones, e.g., MEMWRITE can: * write autoplaced OOB instead of using ECCGETLAYOUT (deprecated) and working around the reserved areas * write raw (no ECC) OOB instead of using MTDFILEMODE to set the per-file-descriptor MTD_FILE_MODE_RAW * write raw (no ECC) data instead of using MTDFILEMODE (MTD_FILE_MODE_RAW) and using standard character device "write" This ioctl is especially useful for MLC NAND, which cannot be written twice (i.e., we cannot successfully write the page data and OOB in two separate operations). Instead, MEMWRITE can write both in a single operation. Note that this ioctl is not affected by the MTD file mode (i.e., MTD_FILE_MODE_RAW vs. MTD_FILE_MODE_NORMAL), since it receives its write mode as an input parameter. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 4004f2b..1547e2a 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -566,6 +566,55 @@ static int mtd_blkpg_ioctl(struct mtd_info *mtd, } } +static int mtd_write_ioctl(struct mtd_info *mtd, + struct mtd_write_req __user *argp) +{ + struct mtd_write_req req; + struct mtd_oob_ops ops; + void __user *usr_data, *usr_oob; + int ret; + + if (copy_from_user(&req, argp, sizeof(req)) || + !access_ok(VERIFY_READ, req.usr_data, req.len) || + !access_ok(VERIFY_READ, req.usr_oob, req.ooblen)) + return -EFAULT; + if (!mtd->write_oob) + return -EOPNOTSUPP; + + ops.mode = req.mode; + ops.len = (size_t)req.len; + ops.ooblen = (size_t)req.ooblen; + ops.ooboffs = 0; + + usr_data = (void __user *)(uintptr_t)req.usr_data; + usr_oob = (void __user *)(uintptr_t)req.usr_oob; + + if (req.usr_data) { + ops.datbuf = memdup_user(usr_data, ops.len); + if (IS_ERR(ops.datbuf)) + return PTR_ERR(ops.datbuf); + } else { + ops.datbuf = NULL; + } + + if (req.usr_oob) { + ops.oobbuf = memdup_user(usr_oob, ops.ooblen); + if (IS_ERR(ops.oobbuf)) { + kfree(ops.datbuf); + return PTR_ERR(ops.oobbuf); + } + } else { + ops.oobbuf = NULL; + } + + ret = mtd->write_oob(mtd, (loff_t)req.start, &ops); + + kfree(ops.datbuf); + kfree(ops.oobbuf); + + return ret; +} + static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) { struct mtd_file_info *mfi = file->private_data; @@ -753,6 +802,13 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) break; } + case MEMWRITE: + { + ret = mtd_write_ioctl(mtd, + (struct mtd_write_req __user *)arg); + break; + } + case MEMLOCK: { struct erase_info_user einfo; diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h index 1885aa9..1a16046 100644 --- a/include/mtd/mtd-abi.h +++ b/include/mtd/mtd-abi.h @@ -60,6 +60,16 @@ enum { MTD_OPS_RAW = 2, }; +struct mtd_write_req { + __u64 start; + __u64 len; + __u64 ooblen; + __u64 usr_data; + __u64 usr_oob; + __u8 mode; + __u8 padding[7]; +}; + #define MTD_ABSENT 0 #define MTD_RAM 1 #define MTD_ROM 2 @@ -147,6 +157,7 @@ struct otp_info { #define MEMWRITEOOB64 _IOWR('M', 21, struct mtd_oob_buf64) #define MEMREADOOB64 _IOWR('M', 22, struct mtd_oob_buf64) #define MEMISLOCKED _IOR('M', 23, struct erase_info_user) +#define MEMWRITE _IOWR('M', 24, struct mtd_write_req) /* * Obsolete legacy interface. Keep it in order not to break userspace -- cgit v0.10.2 From 4180f24a7bff3aa7978e3785d0edd5dcc4af9049 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:44 -0700 Subject: mtd: document ABI We're missing a lot of important documentation in include/mtd/mtd-abi.h: * add a simple description of each ioctl (feel free to expand!) * give full explanations of recently added and modified operations * explain the usage of "RAW" that appear in different modes and types of operations * fix some comment style along the way Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index c2047b8..37d0827 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -79,7 +79,7 @@ struct mtd_erase_region_info { * @ooblen: number of oob bytes to write/read * @oobretlen: number of oob bytes written/read * @ooboffs: offset of oob data in the oob area (only relevant when - * mode = MTD_OPS_PLACE_OOB) + * mode = MTD_OPS_PLACE_OOB or MTD_OPS_RAW) * @datbuf: data buffer - if NULL only oob data are read/written * @oobbuf: oob data buffer * diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h index 1a16046..7dee970 100644 --- a/include/mtd/mtd-abi.h +++ b/include/mtd/mtd-abi.h @@ -45,14 +45,18 @@ struct mtd_oob_buf64 { __u64 usr_ptr; }; -/* +/** * MTD operation modes * - * MTD_OPS_PLACE_OOB: oob data are placed at the given offset (default) - * MTD_OPS_AUTO_OOB: oob data are automatically placed at the free areas + * @MTD_OPS_PLACE_OOB: OOB data are placed at the given offset (default) + * @MTD_OPS_AUTO_OOB: OOB data are automatically placed at the free areas * which are defined by the internal ecclayout - * MTD_OPS_RAW: mode to read or write oob and data without doing ECC - * checking + * @MTD_OPS_RAW: data are transferred as-is, with no error correction; + * this mode implies %MTD_OPS_PLACE_OOB + * + * These modes can be passed to ioctl(MEMWRITE) and are also used internally. + * See notes on "MTD file modes" for discussion on %MTD_OPS_RAW vs. + * %MTD_FILE_MODE_RAW. */ enum { MTD_OPS_PLACE_OOB = 0, @@ -60,6 +64,22 @@ enum { MTD_OPS_RAW = 2, }; +/** + * struct mtd_write_req - data structure for requesting a write operation + * + * @start: start address + * @len: length of data buffer + * @ooblen: length of OOB buffer + * @usr_data: user-provided data buffer + * @usr_oob: user-provided OOB buffer + * @mode: MTD mode (see "MTD operation modes") + * @padding: reserved, must be set to 0 + * + * This structure supports ioctl(MEMWRITE) operations, allowing data and/or OOB + * writes in various modes. To write to OOB-only, set @usr_data == NULL, and to + * write data-only, set @usr_oob == NULL. However, setting both @usr_data and + * @usr_oob to NULL is not allowed. + */ struct mtd_write_req { __u64 start; __u64 len; @@ -84,13 +104,13 @@ struct mtd_write_req { #define MTD_NO_ERASE 0x1000 /* No erase necessary */ #define MTD_POWERUP_LOCK 0x2000 /* Always locked after reset */ -// Some common devices / combinations of capabilities +/* Some common devices / combinations of capabilities */ #define MTD_CAP_ROM 0 #define MTD_CAP_RAM (MTD_WRITEABLE | MTD_BIT_WRITEABLE | MTD_NO_ERASE) #define MTD_CAP_NORFLASH (MTD_WRITEABLE | MTD_BIT_WRITEABLE) #define MTD_CAP_NANDFLASH (MTD_WRITEABLE) -/* ECC byte placement */ +/* Obsolete ECC byte placement modes (used with obsolete MEMGETOOBSEL) */ #define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended) #define MTD_NANDECC_PLACE 1 // Use the given placement in the structure (YAFFS1 legacy mode) #define MTD_NANDECC_AUTOPLACE 2 // Use the default placement scheme @@ -105,10 +125,10 @@ struct mtd_write_req { struct mtd_info_user { __u8 type; __u32 flags; - __u32 size; // Total size of the MTD + __u32 size; /* Total size of the MTD */ __u32 erasesize; __u32 writesize; - __u32 oobsize; // Amount of OOB data per block (e.g. 16) + __u32 oobsize; /* Amount of OOB data per block (e.g. 16) */ /* The below two fields are obsolete and broken, do not use them * (TODO: remove at some point) */ __u32 ecctype; @@ -117,9 +137,9 @@ struct mtd_info_user { struct region_info_user { __u32 offset; /* At which this region starts, - * from the beginning of the MTD */ - __u32 erasesize; /* For this region */ - __u32 numblocks; /* Number of blocks in this region */ + * from the beginning of the MTD */ + __u32 erasesize; /* For this region */ + __u32 numblocks; /* Number of blocks in this region */ __u32 regionindex; }; @@ -135,28 +155,54 @@ struct otp_info { * Try to avoid adding a new ioctl with the same ioctl number. */ +/* Get basic MTD characteristics info (better to use sysfs) */ #define MEMGETINFO _IOR('M', 1, struct mtd_info_user) +/* Erase segment of MTD */ #define MEMERASE _IOW('M', 2, struct erase_info_user) +/* Write out-of-band data from MTD */ #define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf) +/* Read out-of-band data from MTD */ #define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf) +/* Lock a chip (for MTD that supports it) */ #define MEMLOCK _IOW('M', 5, struct erase_info_user) +/* Unlock a chip (for MTD that supports it) */ #define MEMUNLOCK _IOW('M', 6, struct erase_info_user) +/* Get the number of different erase regions */ #define MEMGETREGIONCOUNT _IOR('M', 7, int) +/* Get information about the erase region for a specific index */ #define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user) +/* Get info about OOB modes (e.g., RAW, PLACE, AUTO) - legacy interface */ #define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo) +/* Check if an eraseblock is bad */ #define MEMGETBADBLOCK _IOW('M', 11, __kernel_loff_t) +/* Mark an eraseblock as bad */ #define MEMSETBADBLOCK _IOW('M', 12, __kernel_loff_t) +/* Set OTP (One-Time Programmable) mode (factory vs. user) */ #define OTPSELECT _IOR('M', 13, int) +/* Get number of OTP (One-Time Programmable) regions */ #define OTPGETREGIONCOUNT _IOW('M', 14, int) +/* Get all OTP (One-Time Programmable) info about MTD */ #define OTPGETREGIONINFO _IOW('M', 15, struct otp_info) +/* Lock a given range of user data (must be in mode %MTD_FILE_MODE_OTP_USER) */ #define OTPLOCK _IOR('M', 16, struct otp_info) +/* Get ECC layout (deprecated) */ #define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout_user) +/* Get statistics about corrected/uncorrected errors */ #define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats) +/* Set MTD mode on a per-file-descriptor basis (see "MTD file modes") */ #define MTDFILEMODE _IO('M', 19) +/* Erase segment of MTD (supports 64-bit address) */ #define MEMERASE64 _IOW('M', 20, struct erase_info_user64) +/* Write data to OOB (64-bit version) */ #define MEMWRITEOOB64 _IOWR('M', 21, struct mtd_oob_buf64) +/* Read data from OOB (64-bit version) */ #define MEMREADOOB64 _IOWR('M', 22, struct mtd_oob_buf64) +/* Check if chip is locked (for MTD that supports it) */ #define MEMISLOCKED _IOR('M', 23, struct erase_info_user) +/* + * Most generic write interface; can write in-band and/or out-of-band in various + * modes (see "struct mtd_write_req") + */ #define MEMWRITE _IOWR('M', 24, struct mtd_write_req) /* @@ -208,7 +254,21 @@ struct mtd_ecc_stats { }; /* - * Read/write file modes for access to MTD + * MTD file modes - for read/write access to MTD + * + * @MTD_FILE_MODE_NORMAL: OTP disabled, ECC enabled + * @MTD_FILE_MODE_OTP_FACTORY: OTP enabled in factory mode + * @MTD_FILE_MODE_OTP_USER: OTP enabled in user mode + * @MTD_FILE_MODE_RAW: OTP disabled, ECC disabled + * + * These modes can be set via ioctl(MTDFILEMODE). The mode mode will be retained + * separately for each open file descriptor. + * + * Note: %MTD_FILE_MODE_RAW provides the same functionality as %MTD_OPS_RAW - + * raw access to the flash, without error correction or autoplacement schemes. + * Wherever possible, the MTD_OPS_* mode will override the MTD_FILE_MODE_* mode + * (e.g., when using ioctl(MEMWRITE)), but in some cases, the MTD_FILE_MODE is + * used out of necessity (e.g., `write()', ioctl(MEMWRITEOOB64)). */ enum mtd_file_modes { MTD_FILE_MODE_NORMAL = MTD_OTP_OFF, -- cgit v0.10.2 From 4a89ff885ff9f64ea62669100766e10e4e257c6e Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:45 -0700 Subject: mtd: nand: kill member `ops' of `struct nand_chip' The nand_chip.ops field is a struct that is passed around globally with no particular reason. Every time it is used, it could just as easily be replaced with a local struct that is updated on each operation. So make it local. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 686b557..c9767b5 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -406,6 +406,8 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) if (chip->bbt_options & NAND_BBT_USE_FLASH) ret = nand_update_bbt(mtd, ofs); else { + struct mtd_oob_ops ops; + nand_get_device(chip, mtd, FL_WRITING); /* @@ -414,13 +416,12 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) * procedure. We write two bytes per location, so we dont have * to mess with 16 bit access. */ + ops.len = ops.ooblen = 2; + ops.datbuf = NULL; + ops.oobbuf = buf; + ops.ooboffs = chip->badblockpos & ~0x01; do { - chip->ops.len = chip->ops.ooblen = 2; - chip->ops.datbuf = NULL; - chip->ops.oobbuf = buf; - chip->ops.ooboffs = chip->badblockpos & ~0x01; - - ret = nand_do_write_oob(mtd, ofs, &chip->ops); + ret = nand_do_write_oob(mtd, ofs, &ops); i++; ofs += mtd->writesize; @@ -1573,6 +1574,7 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, uint8_t *buf) { struct nand_chip *chip = mtd->priv; + struct mtd_oob_ops ops; int ret; /* Do not allow reads past end of device */ @@ -1583,13 +1585,13 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, nand_get_device(chip, mtd, FL_READING); - chip->ops.len = len; - chip->ops.datbuf = buf; - chip->ops.oobbuf = NULL; + ops.len = len; + ops.datbuf = buf; + ops.oobbuf = NULL; - ret = nand_do_read_ops(mtd, from, &chip->ops); + ret = nand_do_read_ops(mtd, from, &ops); - *retlen = chip->ops.retlen; + *retlen = ops.retlen; nand_release_device(mtd); @@ -2278,6 +2280,7 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const uint8_t *buf) { struct nand_chip *chip = mtd->priv; + struct mtd_oob_ops ops; int ret; /* Do not allow reads past end of device */ @@ -2292,13 +2295,13 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len, /* Grab the device */ panic_nand_get_device(chip, mtd, FL_WRITING); - chip->ops.len = len; - chip->ops.datbuf = (uint8_t *)buf; - chip->ops.oobbuf = NULL; + ops.len = len; + ops.datbuf = (uint8_t *)buf; + ops.oobbuf = NULL; - ret = nand_do_write_ops(mtd, to, &chip->ops); + ret = nand_do_write_ops(mtd, to, &ops); - *retlen = chip->ops.retlen; + *retlen = ops.retlen; return ret; } @@ -2316,6 +2319,7 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const uint8_t *buf) { struct nand_chip *chip = mtd->priv; + struct mtd_oob_ops ops; int ret; /* Do not allow reads past end of device */ @@ -2326,13 +2330,13 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, nand_get_device(chip, mtd, FL_WRITING); - chip->ops.len = len; - chip->ops.datbuf = (uint8_t *)buf; - chip->ops.oobbuf = NULL; + ops.len = len; + ops.datbuf = (uint8_t *)buf; + ops.oobbuf = NULL; - ret = nand_do_write_ops(mtd, to, &chip->ops); + ret = nand_do_write_ops(mtd, to, &ops); - *retlen = chip->ops.retlen; + *retlen = ops.retlen; nand_release_device(mtd); diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 0b3d464..904131b 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -427,7 +427,6 @@ struct nand_buffers { * @ecc: [BOARDSPECIFIC] ECC control structure * @buffers: buffer structure for read/write * @hwcontrol: platform-specific hardware control structure - * @ops: oob operation operands * @erase_cmd: [INTERN] erase command write function, selectable due * to AND support. * @scan_bbt: [REPLACEABLE] function to scan bad block table @@ -535,8 +534,6 @@ struct nand_chip { struct nand_buffers *buffers; struct nand_hw_control hwcontrol; - struct mtd_oob_ops ops; - uint8_t *bbt; struct nand_bbt_descr *bbt_td; struct nand_bbt_descr *bbt_md; -- cgit v0.10.2 From 19fb4341ad7a72e4c996234a1834e52e1f7954ba Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 30 Aug 2011 18:45:46 -0700 Subject: mtd: kill old field for `struct mtd_info_user' The ecctype and eccsize fields have been obsolete for a while. Since they don't have any users, we can kill them and leave padding in their place for now. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 1547e2a..8feb5fd 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -672,8 +672,8 @@ static int mtd_ioctl(struct file *file, u_int cmd, u_long arg) info.erasesize = mtd->erasesize; info.writesize = mtd->writesize; info.oobsize = mtd->oobsize; - /* The below fields are obsolete */ - info.ecctype = -1; + /* The below field is obsolete */ + info.padding = 0; if (copy_to_user(argp, &info, sizeof(struct mtd_info_user))) return -EFAULT; break; diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h index 7dee970..1a7e1d2 100644 --- a/include/mtd/mtd-abi.h +++ b/include/mtd/mtd-abi.h @@ -129,10 +129,7 @@ struct mtd_info_user { __u32 erasesize; __u32 writesize; __u32 oobsize; /* Amount of OOB data per block (e.g. 16) */ - /* The below two fields are obsolete and broken, do not use them - * (TODO: remove at some point) */ - __u32 ecctype; - __u32 eccsize; + __u64 padding; /* Old obsolete field; do not use */ }; struct region_info_user { -- cgit v0.10.2 From 3e2b82b9073e8bf0b4f359fa3045e81d9fe87f7d Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 7 Sep 2011 09:50:29 +0200 Subject: mtd: drop Integrator flash map Kconfig The integrator flash has been deleted, even from the Makefile. Drop the Kconfig entry as well. Signed-off-by: Linus Walleij Acked-by: Marc Zyngier Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 1b0d56c..8e0c4bf9f 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -332,10 +332,6 @@ config MTD_SOLUTIONENGINE This enables access to the flash chips on the Hitachi SolutionEngine and similar boards. Say 'Y' if you are building a kernel for such a board. -config MTD_ARM_INTEGRATOR - tristate "CFI Flash device mapped on ARM Integrator/P720T" - depends on ARM && MTD_CFI - config MTD_CDB89712 tristate "Cirrus CDB89712 evaluation board mappings" depends on MTD_CFI && ARCH_CDB89712 -- cgit v0.10.2 From 105513cc4a25522f959788371bd612f987d4d184 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 7 Sep 2011 13:13:28 -0700 Subject: mtd: nand: refactor scanning code A few pieces of code are unnecessarily duplicated. For easier maintenance, we should fix this. This should have no functional effect. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index c488bcb..cbf9b69 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -306,28 +306,16 @@ static int scan_read_raw_oob(struct mtd_info *mtd, uint8_t *buf, loff_t offs, ops.ooboffs = 0; ops.ooblen = mtd->oobsize; - while (len > 0) { - if (len <= mtd->writesize) { - ops.oobbuf = buf + len; - ops.datbuf = buf; - ops.len = len; - res = mtd->read_oob(mtd, offs, &ops); - - /* Ignore ECC errors when checking for BBM */ - if (res != -EUCLEAN && res != -EBADMSG) - return res; - return 0; - } else { - ops.oobbuf = buf + mtd->writesize; - ops.datbuf = buf; - ops.len = mtd->writesize; - res = mtd->read_oob(mtd, offs, &ops); + ops.datbuf = buf; + ops.len = min(len, (size_t)mtd->writesize); + ops.oobbuf = buf + ops.len; - /* Ignore ECC errors when checking for BBM */ - if (res && res != -EUCLEAN && res != -EBADMSG) - return res; - } + res = mtd->read_oob(mtd, offs, &ops); + + /* Ignore ECC errors when checking for BBM */ + if (res && res != -EUCLEAN && res != -EBADMSG) + return res; buf += mtd->oobsize + mtd->writesize; len -= mtd->writesize; -- cgit v0.10.2 From afa17de262633603dd65f89e9370f48e56b8c557 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 7 Sep 2011 13:13:29 -0700 Subject: mtd: nand: do not ignore all ECC errors There are a few reasons not to ignore ECC errors here. First, mtd->read_oob is being called in raw mode, so there should be no error correction in the first place. Second, if we change this such that there *is* error correction in this function, then we will want to pass the error message upward. In fact, the code I introduced to "ignore ECC errors" would have been better if it had just placed this test down in `scan_block_full()' in the first place. We would like to ignore ECC errors when we are simply checking for bad block markers (e.g., factory marked), but we may not want to ignore ECC errors when scanning OOB for a flash-based BBT pattern (in `scan_read_raw()'; note that the return codes from `scan_read_raw()' are not actually handled yet). Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index cbf9b69..fcfaf06 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -313,8 +313,7 @@ static int scan_read_raw_oob(struct mtd_info *mtd, uint8_t *buf, loff_t offs, res = mtd->read_oob(mtd, offs, &ops); - /* Ignore ECC errors when checking for BBM */ - if (res && res != -EUCLEAN && res != -EBADMSG) + if (res) return res; buf += mtd->oobsize + mtd->writesize; @@ -400,7 +399,8 @@ static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd, int ret, j; ret = scan_read_raw_oob(mtd, buf, offs, readlen); - if (ret) + /* Ignore ECC errors when checking for BBM */ + if (ret && ret != -EUCLEAN && ret != -EBADMSG) return ret; for (j = 0; j < len; j++, buf += scanlen) { -- cgit v0.10.2 From 1196ac5a9969f180c67e9a4454384250ab034452 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 7 Sep 2011 13:13:32 -0700 Subject: mtd: nand: remove unnecessary variable `writeops' is unnecessary in the function `nand_update_bbt()' Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index fcfaf06..c1074ac 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -1171,7 +1171,7 @@ int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd) int nand_update_bbt(struct mtd_info *mtd, loff_t offs) { struct nand_chip *this = mtd->priv; - int len, res = 0, writeops = 0; + int len, res = 0; int chip, chipsel; uint8_t *buf; struct nand_bbt_descr *td = this->bbt_td; @@ -1187,8 +1187,6 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) if (!buf) return -ENOMEM; - writeops = md != NULL ? 0x03 : 0x01; - /* Do we have a bbt per chip? */ if (td->options & NAND_BBT_PERCHIP) { chip = (int)(offs >> this->chip_shift); @@ -1203,13 +1201,13 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs) md->version[chip]++; /* Write the bad block table to the device? */ - if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { + if (td->options & NAND_BBT_WRITE) { res = write_bbt(mtd, buf, td, md, chipsel); if (res < 0) goto out; } /* Write the mirror bad block table to the device? */ - if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { + if (md && (md->options & NAND_BBT_WRITE)) { res = write_bbt(mtd, buf, md, td, chipsel); } -- cgit v0.10.2 From 596d74527a804418d88e1178c9d72aff5649e89c Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 7 Sep 2011 13:13:33 -0700 Subject: mtd: nand: fix style Remove some extra spaces Consistently use '0x' prefix for bitfield-like constants Spelling: "aplies" -> "applies" Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index c1074ac..e962167 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -183,16 +183,16 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, size_t retlen, len, totlen; loff_t from; int bits = td->options & NAND_BBT_NRBITS_MSK; - uint8_t msk = (uint8_t) ((1 << bits) - 1); + uint8_t msk = (uint8_t)((1 << bits) - 1); u32 marker_len; int reserved_block_code = td->reserved_block_code; totlen = (num * bits) >> 3; marker_len = add_marker_len(td); - from = ((loff_t) page) << this->page_shift; + from = ((loff_t)page) << this->page_shift; while (totlen) { - len = min(totlen, (size_t) (1 << this->bbt_erase_shift)); + len = min(totlen, (size_t)(1 << this->bbt_erase_shift)); if (marker_len) { /* * In case the BBT marker is not in the OOB area it @@ -250,7 +250,7 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, * @mtd: MTD device structure * @buf: temporary buffer * @td: descriptor for the bad block table - * @chip: read the table for a specific chip, -1 read all chips; aplies only if + * @chip: read the table for a specific chip, -1 read all chips; applies only if * NAND_BBT_PERCHIP option is set * * Read the bad block table for all chips starting at a given page. We assume @@ -743,12 +743,12 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, bbtoffs = chip * (numblocks >> 2); - to = ((loff_t) page) << this->page_shift; + to = ((loff_t)page) << this->page_shift; /* Must we save the block contents? */ if (td->options & NAND_BBT_SAVECONTENT) { /* Make it block aligned */ - to &= ~((loff_t) ((1 << this->bbt_erase_shift) - 1)); + to &= ~((loff_t)((1 << this->bbt_erase_shift) - 1)); len = 1 << this->bbt_erase_shift; res = mtd->read(mtd, to, len, &retlen, buf); if (res < 0) { @@ -771,7 +771,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, pageoffs = page - (int)(to >> this->page_shift); offs = pageoffs << this->page_shift; /* Preset the bbt area with 0xff */ - memset(&buf[offs], 0xff, (size_t) (numblocks >> sft)); + memset(&buf[offs], 0xff, (size_t)(numblocks >> sft)); ooboffs = len + (pageoffs * mtd->oobsize); } else if (td->options & NAND_BBT_NO_OOB) { @@ -781,7 +781,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, if (td->options & NAND_BBT_VERSION) offs++; /* Calc length */ - len = (size_t) (numblocks >> sft); + len = (size_t)(numblocks >> sft); len += offs; /* Make it page aligned! */ len = ALIGN(len, mtd->writesize); @@ -791,7 +791,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, memcpy(buf, td->pattern, td->len); } else { /* Calc length */ - len = (size_t) (numblocks >> sft); + len = (size_t)(numblocks >> sft); /* Make it page aligned! */ len = ALIGN(len, mtd->writesize); /* Preset the buffer with 0xff */ @@ -903,14 +903,14 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc if (td->pages[i] == -1) { rd = md; td->version[i] = md->version[i]; - writeops = 1; + writeops = 0x01; goto writecheck; } if (md->pages[i] == -1) { rd = td; md->version[i] = td->version[i]; - writeops = 2; + writeops = 0x02; goto writecheck; } @@ -921,14 +921,14 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc goto writecheck; } - if (((int8_t) (td->version[i] - md->version[i])) > 0) { + if (((int8_t)(td->version[i] - md->version[i])) > 0) { rd = td; md->version[i] = td->version[i]; - writeops = 2; + writeops = 0x02; } else { rd = md; td->version[i] = md->version[i]; - writeops = 1; + writeops = 0x01; } goto writecheck; -- cgit v0.10.2 From c5e8ef9c21a492f1e0436b350bbc3e916f93e506 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 7 Sep 2011 13:13:34 -0700 Subject: mtd: nand: begin restructuring check_create We will begin restructuring the code for check_create so that we can make some important changes. For now, we should just begin to get rid of some goto statements to make things cleaner. This is the first step of a few, which are separated to make them easier to follow. This step should just be a code refactor. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index e962167..42b523a 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -898,30 +898,19 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc if (td->pages[i] == -1 && md->pages[i] == -1) { writeops = 0x03; goto create; - } - - if (td->pages[i] == -1) { + } else if (td->pages[i] == -1) { rd = md; td->version[i] = md->version[i]; writeops = 0x01; - goto writecheck; - } - - if (md->pages[i] == -1) { + } else if (md->pages[i] == -1) { rd = td; md->version[i] = td->version[i]; writeops = 0x02; - goto writecheck; - } - - if (td->version[i] == md->version[i]) { + } else if (td->version[i] == md->version[i]) { rd = td; if (!(td->options & NAND_BBT_VERSION)) rd2 = md; - goto writecheck; - } - - if (((int8_t)(td->version[i] - md->version[i])) > 0) { + } else if (((int8_t)(td->version[i] - md->version[i])) > 0) { rd = td; md->version[i] = td->version[i]; writeops = 0x02; @@ -930,17 +919,14 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc td->version[i] = md->version[i]; writeops = 0x01; } - - goto writecheck; - } else { if (td->pages[i] == -1) { writeops = 0x01; goto create; } rd = td; - goto writecheck; } + goto writecheck; create: /* Create the bad block table by scanning the device? */ if (!(td->options & NAND_BBT_CREATE)) -- cgit v0.10.2 From b61bf5bbf619fc66ca866a27038da0b91cafb92d Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 7 Sep 2011 13:13:35 -0700 Subject: mtd: nand: remove gotos in `check_create()' This is a second step in restructuring `check_create()'. When we don't rely on goto statements for our main functionality, the code will become a little easier to manipulate. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 42b523a..7dbfce4 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -875,7 +875,7 @@ static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *b */ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) { - int i, chips, writeops, chipsel, res; + int i, chips, writeops, create, chipsel, res; struct nand_chip *this = mtd->priv; struct nand_bbt_descr *td = this->bbt_td; struct nand_bbt_descr *md = this->bbt_md; @@ -889,6 +889,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc for (i = 0; i < chips; i++) { writeops = 0; + create = 0; rd = NULL; rd2 = NULL; /* Per chip or per device? */ @@ -896,8 +897,8 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc /* Mirrored table available? */ if (md) { if (td->pages[i] == -1 && md->pages[i] == -1) { + create = 1; writeops = 0x03; - goto create; } else if (td->pages[i] == -1) { rd = md; td->version[i] = md->version[i]; @@ -921,25 +922,27 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc } } else { if (td->pages[i] == -1) { + create = 1; writeops = 0x01; - goto create; + } else { + rd = td; } - rd = td; } - goto writecheck; - create: - /* Create the bad block table by scanning the device? */ - if (!(td->options & NAND_BBT_CREATE)) - continue; - /* Create the table in memory by scanning the chip(s) */ - if (!(this->bbt_options & NAND_BBT_CREATE_EMPTY)) - create_bbt(mtd, buf, bd, chipsel); + if (create) { + /* Create the bad block table by scanning the device? */ + if (!(td->options & NAND_BBT_CREATE)) + continue; + + /* Create the table in memory by scanning the chip(s) */ + if (!(this->bbt_options & NAND_BBT_CREATE_EMPTY)) + create_bbt(mtd, buf, bd, chipsel); + + td->version[i] = 1; + if (md) + md->version[i] = 1; + } - td->version[i] = 1; - if (md) - md->version[i] = 1; - writecheck: /* Read back first? */ if (rd) read_abs_bbt(mtd, buf, rd, chipsel); -- cgit v0.10.2 From 7387ce773256f446bdd0280b2449b635441f906e Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 20 Sep 2011 18:30:51 -0700 Subject: mtd: define `mtd_is_*()' functions These functions can be used instead of referencing -EUCLEAN and -EBADMSG all over the place. They should help make code a little bit more readable. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 37d0827..4bce1eb 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -348,4 +348,16 @@ void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size); void mtd_erase_callback(struct erase_info *instr); +static inline int mtd_is_bitflip(int err) { + return err == -EUCLEAN; +} + +static inline int mtd_is_eccerr(int err) { + return err == -EBADMSG; +} + +static inline int mtd_is_bitflip_or_eccerr(int err) { + return mtd_is_bitflip(err) || mtd_is_eccerr(err); +} + #endif /* __MTD_MTD_H__ */ -- cgit v0.10.2 From d57f40544a41fdfe90fd863b6865138c5a82f1cc Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 20 Sep 2011 18:34:25 -0700 Subject: mtd: utilize `mtd_is_*()' functions Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c index 652065e..dd034ef 100644 --- a/drivers/mtd/inftlcore.c +++ b/drivers/mtd/inftlcore.c @@ -346,7 +346,7 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned ret = mtd->read(mtd, (inftl->EraseSize * BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE, &retlen, movebuf); - if (ret < 0 && ret != -EUCLEAN) { + if (ret < 0 && !mtd_is_bitflip(ret)) { ret = mtd->read(mtd, (inftl->EraseSize * BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE, @@ -917,7 +917,7 @@ foundit: int ret = mtd->read(mtd, ptr, SECTORSIZE, &retlen, buffer); /* Handle corrected bit flips gracefully */ - if (ret < 0 && ret != -EUCLEAN) + if (ret < 0 && !mtd_is_bitflip(ret)) return -EIO; } return 0; diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 8feb5fd..47be6e5 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -242,7 +242,7 @@ static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t * Userspace software which accesses NAND this way * must be aware of the fact that it deals with NAND */ - if (!ret || (ret == -EUCLEAN) || (ret == -EBADMSG)) { + if (!ret || mtd_is_bitflip_or_eccerr(ret)) { *ppos += retlen; if (copy_to_user(buf, kbuf, retlen)) { kfree(kbuf); @@ -491,7 +491,7 @@ static int mtd_do_readoob(struct file *file, struct mtd_info *mtd, * does not calculate ECC for the OOB area, so do not rely on * this behavior unless you have replaced it with your own. */ - if (ret == -EUCLEAN || ret == -EBADMSG) + if (mtd_is_bitflip_or_eccerr(ret)) return 0; return ret; diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index d3fabd1..6df4d4d 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -95,10 +95,10 @@ concat_read(struct mtd_info *mtd, loff_t from, size_t len, /* Save information about bitflips! */ if (unlikely(err)) { - if (err == -EBADMSG) { + if (mtd_is_eccerr(err)) { mtd->ecc_stats.failed++; ret = err; - } else if (err == -EUCLEAN) { + } else if (mtd_is_bitflip(err)) { mtd->ecc_stats.corrected++; /* Do not overwrite -EBADMSG !! */ if (!ret) @@ -279,10 +279,10 @@ concat_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) /* Save information about bitflips! */ if (unlikely(err)) { - if (err == -EBADMSG) { + if (mtd_is_eccerr(err)) { mtd->ecc_stats.failed++; ret = err; - } else if (err == -EUCLEAN) { + } else if (mtd_is_bitflip(err)) { mtd->ecc_stats.corrected++; /* Do not overwrite -EBADMSG !! */ if (!ret) diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c index e3e40f4..1e2fa62 100644 --- a/drivers/mtd/mtdoops.c +++ b/drivers/mtd/mtdoops.c @@ -258,7 +258,7 @@ static void find_next_position(struct mtdoops_context *cxt) ret = mtd->read(mtd, page * record_size, MTDOOPS_HEADER_SIZE, &retlen, (u_char *) &count[0]); if (retlen != MTDOOPS_HEADER_SIZE || - (ret < 0 && ret != -EUCLEAN)) { + (ret < 0 && !mtd_is_bitflip(ret))) { printk(KERN_ERR "mtdoops: read failure at %ld (%td of %d read), err %d\n", page * record_size, retlen, MTDOOPS_HEADER_SIZE, ret); diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index cd7785a..a0bd2de 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -73,9 +73,9 @@ static int part_read(struct mtd_info *mtd, loff_t from, size_t len, res = part->master->read(part->master, from + part->offset, len, retlen, buf); if (unlikely(res)) { - if (res == -EUCLEAN) + if (mtd_is_bitflip(res)) mtd->ecc_stats.corrected += part->master->ecc_stats.corrected - stats.corrected; - if (res == -EBADMSG) + if (mtd_is_eccerr(res)) mtd->ecc_stats.failed += part->master->ecc_stats.failed - stats.failed; } return res; @@ -142,9 +142,9 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from, res = part->master->read_oob(part->master, from + part->offset, ops); if (unlikely(res)) { - if (res == -EUCLEAN) + if (mtd_is_bitflip(res)) mtd->ecc_stats.corrected++; - if (res == -EBADMSG) + if (mtd_is_eccerr(res)) mtd->ecc_stats.failed++; } return res; diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index 910309f..bd9590c 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -314,7 +314,7 @@ static int mtdswap_read_oob(struct mtdswap_dev *d, loff_t from, { int ret = d->mtd->read_oob(d->mtd, from, ops); - if (ret == -EUCLEAN) + if (mtd_is_bitflip(ret)) return ret; if (ret) { @@ -354,7 +354,7 @@ static int mtdswap_read_markers(struct mtdswap_dev *d, struct swap_eb *eb) ret = mtdswap_read_oob(d, offset, &ops); - if (ret && ret != -EUCLEAN) + if (ret && !mtd_is_bitflip(ret)) return ret; data = (struct mtdswap_oobdata *)d->oob_buf; @@ -363,7 +363,7 @@ static int mtdswap_read_markers(struct mtdswap_dev *d, struct swap_eb *eb) if (le16_to_cpu(data->magic) == MTDSWAP_MAGIC_CLEAN) { eb->erase_count = le32_to_cpu(data->count); - if (ret == -EUCLEAN) + if (mtd_is_bitflip(ret)) ret = MTDSWAP_SCANNED_BITFLIP; else { if (le16_to_cpu(data2->magic) == MTDSWAP_MAGIC_DIRTY) @@ -408,7 +408,7 @@ static int mtdswap_write_marker(struct mtdswap_dev *d, struct swap_eb *eb, if (ret) { dev_warn(d->dev, "Write OOB failed for block at %08llx " "error %d\n", offset, ret); - if (ret == -EIO || ret == -EBADMSG) + if (ret == -EIO || mtd_is_eccerr(ret)) mtdswap_handle_write_error(d, eb); return ret; } @@ -628,7 +628,7 @@ static int mtdswap_map_free_block(struct mtdswap_dev *d, unsigned int page, TREE_COUNT(d, CLEAN)--; ret = mtdswap_write_marker(d, eb, MTDSWAP_TYPE_DIRTY); - } while (ret == -EIO || ret == -EBADMSG); + } while (ret == -EIO || mtd_is_eccerr(ret)); if (ret) return ret; @@ -678,7 +678,7 @@ retry: ret = mtdswap_map_free_block(d, page, bp); eb = d->eb_data + (*bp / d->pages_per_eblk); - if (ret == -EIO || ret == -EBADMSG) { + if (ret == -EIO || mtd_is_eccerr(ret)) { d->curr_write = NULL; eb->active_count--; d->revmap[*bp] = PAGE_UNDEF; @@ -690,7 +690,7 @@ retry: writepos = (loff_t)*bp << PAGE_SHIFT; ret = mtd->write(mtd, writepos, PAGE_SIZE, &retlen, buf); - if (ret == -EIO || ret == -EBADMSG) { + if (ret == -EIO || mtd_is_eccerr(ret)) { d->curr_write_pos--; eb->active_count--; d->revmap[*bp] = PAGE_UNDEF; @@ -738,7 +738,7 @@ static int mtdswap_move_block(struct mtdswap_dev *d, unsigned int oldblock, retry: ret = mtd->read(mtd, readpos, PAGE_SIZE, &retlen, d->page_buf); - if (ret < 0 && ret != -EUCLEAN) { + if (ret < 0 && !mtd_is_bitflip(ret)) { oldeb = d->eb_data + oldblock / d->pages_per_eblk; oldeb->flags |= EBLOCK_READERR; @@ -1016,7 +1016,7 @@ static int mtdswap_gc(struct mtdswap_dev *d, unsigned int background) if (ret == 0) mtdswap_rb_add(d, eb, MTDSWAP_CLEAN); - else if (ret != -EIO && ret != -EBADMSG) + else if (ret != -EIO && !mtd_is_eccerr(ret)) mtdswap_rb_add(d, eb, MTDSWAP_DIRTY); return 0; @@ -1164,7 +1164,7 @@ retry: ret = mtd->read(mtd, readpos, PAGE_SIZE, &retlen, buf); d->mtd_read_count++; - if (ret == -EUCLEAN) { + if (mtd_is_bitflip(ret)) { eb->flags |= EBLOCK_BITFLIP; mtdswap_rb_add(d, eb, MTDSWAP_BITFLIP); ret = 0; diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index de93a98..ae8c60d 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -1031,7 +1031,7 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf); else WriteDOC(DOC_ECC_DIS, docptr, ECCConf); - if (no_ecc_failures && (ret == -EBADMSG)) { + if (no_ecc_failures && mtd_is_eccerr(ret)) { printk(KERN_ERR "suppressing ECC failure\n"); ret = 0; } diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 7dbfce4..584bdcb 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -400,7 +400,7 @@ static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd, ret = scan_read_raw_oob(mtd, buf, offs, readlen); /* Ignore ECC errors when checking for BBM */ - if (ret && ret != -EUCLEAN && ret != -EBADMSG) + if (ret && !mtd_is_bitflip_or_eccerr(ret)) return ret; for (j = 0; j < len; j++, buf += scanlen) { @@ -430,7 +430,7 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd, */ ret = mtd->read_oob(mtd, offs, &ops); /* Ignore ECC errors when checking for BBM */ - if (ret && ret != -EUCLEAN && ret != -EBADMSG) + if (ret && !mtd_is_bitflip_or_eccerr(ret)) return ret; if (check_short_pattern(buf, bd)) diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c index 272e3c0..cda77b5 100644 --- a/drivers/mtd/nftlcore.c +++ b/drivers/mtd/nftlcore.c @@ -425,7 +425,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512), 512, &retlen, movebuf); - if (ret < 0 && ret != -EUCLEAN) { + if (ret < 0 && !mtd_is_bitflip(ret)) { ret = mtd->read(mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512), 512, &retlen, movebuf); @@ -773,7 +773,7 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block, size_t retlen; int res = mtd->read(mtd, ptr, 512, &retlen, buffer); - if (res < 0 && res != -EUCLEAN) + if (res < 0 && !mtd_is_bitflip(res)) return -EIO; } return 0; diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index a52aa0f..a839473 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -1079,7 +1079,7 @@ static int onenand_recover_lsb(struct mtd_info *mtd, loff_t addr, int status) return status; /* check if we failed due to uncorrectable error */ - if (status != -EBADMSG && status != ONENAND_BBT_READ_ECC_ERROR) + if (!mtd_is_eccerr(status) && status != ONENAND_BBT_READ_ECC_ERROR) return status; /* check if address lies in MLC region */ @@ -1159,7 +1159,7 @@ static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from, if (unlikely(ret)) ret = onenand_recover_lsb(mtd, from, ret); onenand_update_bufferram(mtd, from, !ret); - if (ret == -EBADMSG) + if (mtd_is_eccerr(ret)) ret = 0; if (ret) break; @@ -1255,7 +1255,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, this->command(mtd, ONENAND_CMD_READ, from, writesize); ret = this->wait(mtd, FL_READING); onenand_update_bufferram(mtd, from, !ret); - if (ret == -EBADMSG) + if (mtd_is_eccerr(ret)) ret = 0; } } @@ -1315,7 +1315,7 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, /* Now wait for load */ ret = this->wait(mtd, FL_READING); onenand_update_bufferram(mtd, from, !ret); - if (ret == -EBADMSG) + if (mtd_is_eccerr(ret)) ret = 0; } @@ -1403,7 +1403,7 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, if (unlikely(ret)) ret = onenand_recover_lsb(mtd, from, ret); - if (ret && ret != -EBADMSG) { + if (ret && !mtd_is_eccerr(ret)) { printk(KERN_ERR "%s: read failed = 0x%x\n", __func__, ret); break; diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index d927641..fddb714 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -281,7 +281,7 @@ again: ret = mtd->read_oob(mtd, sm_mkoffset(ftl, zone, block, boffset), &ops); /* Test for unknown errors */ - if (ret != 0 && ret != -EUCLEAN && ret != -EBADMSG) { + if (ret != 0 && !mtd_is_bitflip_or_eccerr(ret)) { dbg("read of block %d at zone %d, failed due to error (%d)", block, zone, ret); goto again; @@ -306,7 +306,7 @@ again: } /* Test ECC*/ - if (ret == -EBADMSG || + if (mtd_is_eccerr(ret) || (ftl->smallpagenand && sm_correct_sector(buffer, oob))) { dbg("read of block %d at zone %d, failed due to ECC error", diff --git a/drivers/mtd/tests/mtd_pagetest.c b/drivers/mtd/tests/mtd_pagetest.c index 00b937e..186b14c 100644 --- a/drivers/mtd/tests/mtd_pagetest.c +++ b/drivers/mtd/tests/mtd_pagetest.c @@ -128,7 +128,7 @@ static int verify_eraseblock(int ebnum) for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) { /* Do a read to set the internal dataRAMs to different data */ err = mtd->read(mtd, addr0, bufsize, &read, twopages); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != bufsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -136,7 +136,7 @@ static int verify_eraseblock(int ebnum) return err; } err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != bufsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -146,7 +146,7 @@ static int verify_eraseblock(int ebnum) memset(twopages, 0, bufsize); read = 0; err = mtd->read(mtd, addr, bufsize, &read, twopages); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != bufsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -164,7 +164,7 @@ static int verify_eraseblock(int ebnum) unsigned long oldnext = next; /* Do a read to set the internal dataRAMs to different data */ err = mtd->read(mtd, addr0, bufsize, &read, twopages); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != bufsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -172,7 +172,7 @@ static int verify_eraseblock(int ebnum) return err; } err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != bufsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -182,7 +182,7 @@ static int verify_eraseblock(int ebnum) memset(twopages, 0, bufsize); read = 0; err = mtd->read(mtd, addr, bufsize, &read, twopages); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != bufsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -231,7 +231,7 @@ static int crosstest(void) read = 0; addr = addrn - pgsize - pgsize; err = mtd->read(mtd, addr, pgsize, &read, pp1); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -244,7 +244,7 @@ static int crosstest(void) read = 0; addr = addrn - pgsize - pgsize - pgsize; err = mtd->read(mtd, addr, pgsize, &read, pp1); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -258,7 +258,7 @@ static int crosstest(void) addr = addr0; printk(PRINT_PREF "reading page at %#llx\n", (long long)addr); err = mtd->read(mtd, addr, pgsize, &read, pp2); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -272,7 +272,7 @@ static int crosstest(void) addr = addrn - pgsize; printk(PRINT_PREF "reading page at %#llx\n", (long long)addr); err = mtd->read(mtd, addr, pgsize, &read, pp3); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -286,7 +286,7 @@ static int crosstest(void) addr = addr0; printk(PRINT_PREF "reading page at %#llx\n", (long long)addr); err = mtd->read(mtd, addr, pgsize, &read, pp4); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -345,7 +345,7 @@ static int erasecrosstest(void) printk(PRINT_PREF "reading 1st page of block %d\n", ebnum); memset(readbuf, 0, pgsize); err = mtd->read(mtd, addr0, pgsize, &read, readbuf); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -383,7 +383,7 @@ static int erasecrosstest(void) printk(PRINT_PREF "reading 1st page of block %d\n", ebnum); memset(readbuf, 0, pgsize); err = mtd->read(mtd, addr0, pgsize, &read, readbuf); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -439,7 +439,7 @@ static int erasetest(void) printk(PRINT_PREF "reading 1st page of block %d\n", ebnum); err = mtd->read(mtd, addr0, pgsize, &read, twopages); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c index 587e1e3..7560453 100644 --- a/drivers/mtd/tests/mtd_readtest.c +++ b/drivers/mtd/tests/mtd_readtest.c @@ -75,7 +75,7 @@ static int read_eraseblock_by_page(int ebnum) ops.datbuf = NULL; ops.oobbuf = oobbuf; ret = mtd->read_oob(mtd, addr, &ops); - if ((ret && ret != -EUCLEAN) || + if ((ret && !mtd_is_bitflip(ret)) || ops.oobretlen != mtd->oobsize) { printk(PRINT_PREF "error: read oob failed at " "%#llx\n", (long long)addr); diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c index 627d4e2..79d53ee 100644 --- a/drivers/mtd/tests/mtd_speedtest.c +++ b/drivers/mtd/tests/mtd_speedtest.c @@ -216,7 +216,7 @@ static int read_eraseblock(int ebnum) err = mtd->read(mtd, addr, mtd->erasesize, &read, iobuf); /* Ignore corrected ECC errors */ - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != mtd->erasesize) { printk(PRINT_PREF "error: read failed at %#llx\n", addr); @@ -237,7 +237,7 @@ static int read_eraseblock_by_page(int ebnum) for (i = 0; i < pgcnt; i++) { err = mtd->read(mtd, addr, pgsize, &read, buf); /* Ignore corrected ECC errors */ - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -263,7 +263,7 @@ static int read_eraseblock_by_2pages(int ebnum) for (i = 0; i < n; i++) { err = mtd->read(mtd, addr, sz, &read, buf); /* Ignore corrected ECC errors */ - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != sz) { printk(PRINT_PREF "error: read failed at %#llx\n", @@ -278,7 +278,7 @@ static int read_eraseblock_by_2pages(int ebnum) if (pgcnt % 2) { err = mtd->read(mtd, addr, pgsize, &read, buf); /* Ignore corrected ECC errors */ - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (err || read != pgsize) { printk(PRINT_PREF "error: read failed at %#llx\n", diff --git a/drivers/mtd/tests/mtd_stresstest.c b/drivers/mtd/tests/mtd_stresstest.c index 531625f..3c9008a 100644 --- a/drivers/mtd/tests/mtd_stresstest.c +++ b/drivers/mtd/tests/mtd_stresstest.c @@ -154,7 +154,7 @@ static int do_read(void) } addr = eb * mtd->erasesize + offs; err = mtd->read(mtd, addr, len, &read, readbuf); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) err = 0; if (unlikely(err || read != len)) { printk(PRINT_PREF "error: read failed at 0x%llx\n", diff --git a/drivers/mtd/tests/mtd_subpagetest.c b/drivers/mtd/tests/mtd_subpagetest.c index 334eae5..2b51842 100644 --- a/drivers/mtd/tests/mtd_subpagetest.c +++ b/drivers/mtd/tests/mtd_subpagetest.c @@ -198,7 +198,7 @@ static int verify_eraseblock(int ebnum) read = 0; err = mtd->read(mtd, addr, subpgsize, &read, readbuf); if (unlikely(err || read != subpgsize)) { - if (err == -EUCLEAN && read == subpgsize) { + if (mtd_is_bitflip(err) && read == subpgsize) { printk(PRINT_PREF "ECC correction at %#llx\n", (long long)addr); err = 0; @@ -226,7 +226,7 @@ static int verify_eraseblock(int ebnum) read = 0; err = mtd->read(mtd, addr, subpgsize, &read, readbuf); if (unlikely(err || read != subpgsize)) { - if (err == -EUCLEAN && read == subpgsize) { + if (mtd_is_bitflip(err) && read == subpgsize) { printk(PRINT_PREF "ECC correction at %#llx\n", (long long)addr); err = 0; @@ -264,7 +264,7 @@ static int verify_eraseblock2(int ebnum) read = 0; err = mtd->read(mtd, addr, subpgsize * k, &read, readbuf); if (unlikely(err || read != subpgsize * k)) { - if (err == -EUCLEAN && read == subpgsize * k) { + if (mtd_is_bitflip(err) && read == subpgsize * k) { printk(PRINT_PREF "ECC correction at %#llx\n", (long long)addr); err = 0; @@ -298,7 +298,7 @@ static int verify_eraseblock_ff(int ebnum) read = 0; err = mtd->read(mtd, addr, subpgsize, &read, readbuf); if (unlikely(err || read != subpgsize)) { - if (err == -EUCLEAN && read == subpgsize) { + if (mtd_is_bitflip(err) && read == subpgsize) { printk(PRINT_PREF "ECC correction at %#llx\n", (long long)addr); err = 0; diff --git a/drivers/mtd/tests/mtd_torturetest.c b/drivers/mtd/tests/mtd_torturetest.c index 5c6c3d2..25786ce 100644 --- a/drivers/mtd/tests/mtd_torturetest.c +++ b/drivers/mtd/tests/mtd_torturetest.c @@ -138,7 +138,7 @@ static inline int check_eraseblock(int ebnum, unsigned char *buf) retry: err = mtd->read(mtd, addr, len, &read, check_buf); - if (err == -EUCLEAN) + if (mtd_is_bitflip(err)) printk(PRINT_PREF "single bit flip occurred at EB %d " "MTD reported that it was fixed.\n", ebnum); else if (err) { diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c index 4be67181..fb7f19b 100644 --- a/drivers/mtd/ubi/eba.c +++ b/drivers/mtd/ubi/eba.c @@ -443,7 +443,7 @@ retry: if (err == UBI_IO_BITFLIPS) { scrub = 1; err = 0; - } else if (err == -EBADMSG) { + } else if (mtd_is_eccerr(err)) { if (vol->vol_type == UBI_DYNAMIC_VOLUME) goto out_unlock; scrub = 1; diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index 6ba55c2..f20b6f2 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -172,9 +172,9 @@ int ubi_io_read(const struct ubi_device *ubi, void *buf, int pnum, int offset, retry: err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf); if (err) { - const char *errstr = (err == -EBADMSG) ? " (ECC error)" : ""; + const char *errstr = mtd_is_eccerr(err) ? " (ECC error)" : ""; - if (err == -EUCLEAN) { + if (mtd_is_bitflip(err)) { /* * -EUCLEAN is reported if there was a bit-flip which * was corrected, so this is harmless. @@ -205,7 +205,7 @@ retry: * all the requested data. But some buggy drivers might do * this, so we change it to -EIO. */ - if (read != len && err == -EBADMSG) { + if (read != len && mtd_is_eccerr(err)) { ubi_assert(0); err = -EIO; } @@ -469,7 +469,7 @@ static int torture_peb(struct ubi_device *ubi, int pnum) out: mutex_unlock(&ubi->buf_mutex); - if (err == UBI_IO_BITFLIPS || err == -EBADMSG) { + if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err)) { /* * If a bit-flip or data integrity error was detected, the test * has not passed because it happened on a freshly erased @@ -760,7 +760,7 @@ int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum, read_err = ubi_io_read(ubi, ec_hdr, pnum, 0, UBI_EC_HDR_SIZE); if (read_err) { - if (read_err != UBI_IO_BITFLIPS && read_err != -EBADMSG) + if (read_err != UBI_IO_BITFLIPS && !mtd_is_eccerr(read_err)) return read_err; /* @@ -776,7 +776,7 @@ int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum, magic = be32_to_cpu(ec_hdr->magic); if (magic != UBI_EC_HDR_MAGIC) { - if (read_err == -EBADMSG) + if (mtd_is_eccerr(read_err)) return UBI_IO_BAD_HDR_EBADMSG; /* @@ -1032,12 +1032,12 @@ int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum, p = (char *)vid_hdr - ubi->vid_hdr_shift; read_err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset, ubi->vid_hdr_alsize); - if (read_err && read_err != UBI_IO_BITFLIPS && read_err != -EBADMSG) + if (read_err && read_err != UBI_IO_BITFLIPS && !mtd_is_eccerr(read_err)) return read_err; magic = be32_to_cpu(vid_hdr->magic); if (magic != UBI_VID_HDR_MAGIC) { - if (read_err == -EBADMSG) + if (mtd_is_eccerr(read_err)) return UBI_IO_BAD_HDR_EBADMSG; if (ubi_check_pattern(vid_hdr, 0xFF, UBI_VID_HDR_SIZE)) { @@ -1219,7 +1219,7 @@ static int paranoid_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum) return -ENOMEM; err = ubi_io_read(ubi, ec_hdr, pnum, 0, UBI_EC_HDR_SIZE); - if (err && err != UBI_IO_BITFLIPS && err != -EBADMSG) + if (err && err != UBI_IO_BITFLIPS && !mtd_is_eccerr(err)) goto exit; crc = crc32(UBI_CRC32_INIT, ec_hdr, UBI_EC_HDR_SIZE_CRC); @@ -1306,7 +1306,7 @@ static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum) p = (char *)vid_hdr - ubi->vid_hdr_shift; err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset, ubi->vid_hdr_alsize); - if (err && err != UBI_IO_BITFLIPS && err != -EBADMSG) + if (err && err != UBI_IO_BITFLIPS && !mtd_is_eccerr(err)) goto exit; crc = crc32(UBI_CRC32_INIT, vid_hdr, UBI_EC_HDR_SIZE_CRC); @@ -1358,7 +1358,7 @@ int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum, } err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf1); - if (err && err != -EUCLEAN) + if (err && !mtd_is_bitflip(err)) goto out_free; for (i = 0; i < len; i++) { @@ -1422,7 +1422,7 @@ int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len) } err = ubi->mtd->read(ubi->mtd, addr, len, &read, buf); - if (err && err != -EUCLEAN) { + if (err && !mtd_is_bitflip(err)) { ubi_err("error %d while reading %d bytes from PEB %d:%d, " "read %zd bytes", err, len, pnum, offset, read); goto error; diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c index d39716e..1a35fc5 100644 --- a/drivers/mtd/ubi/kapi.c +++ b/drivers/mtd/ubi/kapi.c @@ -410,7 +410,7 @@ int ubi_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset, return 0; err = ubi_eba_read_leb(ubi, vol, lnum, buf, offset, len, check); - if (err && err == -EBADMSG && vol->vol_type == UBI_STATIC_VOLUME) { + if (err && mtd_is_eccerr(err) && vol->vol_type == UBI_STATIC_VOLUME) { ubi_warn("mark volume %d as corrupted", vol_id); vol->corrupted = 1; } diff --git a/drivers/mtd/ubi/misc.c b/drivers/mtd/ubi/misc.c index ff2a65c..f6a7d7a 100644 --- a/drivers/mtd/ubi/misc.c +++ b/drivers/mtd/ubi/misc.c @@ -81,7 +81,7 @@ int ubi_check_volume(struct ubi_device *ubi, int vol_id) err = ubi_eba_read_leb(ubi, vol, i, buf, 0, size, 1); if (err) { - if (err == -EBADMSG) + if (mtd_is_eccerr(err)) err = 1; break; } diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c index a3a198f..0cb17d9 100644 --- a/drivers/mtd/ubi/scan.c +++ b/drivers/mtd/ubi/scan.c @@ -395,7 +395,7 @@ static int compare_lebs(struct ubi_device *ubi, const struct ubi_scan_leb *seb, } err = ubi_io_read_data(ubi, buf, pnum, 0, len); - if (err && err != UBI_IO_BITFLIPS && err != -EBADMSG) + if (err && err != UBI_IO_BITFLIPS && !mtd_is_eccerr(err)) goto out_free_buf; data_crc = be32_to_cpu(vid_hdr->data_crc); @@ -793,7 +793,7 @@ static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr, err = ubi_io_read(ubi, ubi->peb_buf1, pnum, ubi->leb_start, ubi->leb_size); - if (err == UBI_IO_BITFLIPS || err == -EBADMSG) { + if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err)) { /* * Bit-flips or integrity errors while reading the data area. * It is difficult to say for sure what type of corruption is diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c index 4b50a30..9ad18da 100644 --- a/drivers/mtd/ubi/vtbl.c +++ b/drivers/mtd/ubi/vtbl.c @@ -423,7 +423,7 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi, err = ubi_io_read_data(ubi, leb[seb->lnum], seb->pnum, 0, ubi->vtbl_size); - if (err == UBI_IO_BITFLIPS || err == -EBADMSG) + if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err)) /* * Scrub the PEB later. Note, -EBADMSG indicates an * uncorrectable ECC error, but we have our own CRC and -- cgit v0.10.2 From 167a8d52509a0f7d6728a79e2588b800e866c147 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 20 Sep 2011 18:35:08 -0700 Subject: mtd: nand: report ECC errors properly when reading BBT Instead of just printing a warning when encountering ECC errors, we should return a proper error status and print a more informative warning. Later, we will handle these error messages in the upper layers of the BBT scan. Note that this patch makes our check for ECC error codes a little bit more restrictive, leaving all unrecognized errors to the generic "else" clause. This shouldn't cause problems and could even be a benefit. This code is based on some findings reported by Matthieu Castet. Reported-by: Matthieu CASTET Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 584bdcb..0ed8591 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -178,7 +178,7 @@ static u32 add_marker_len(struct nand_bbt_descr *td) static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, struct nand_bbt_descr *td, int offs) { - int res, i, j, act = 0; + int res, ret = 0, i, j, act = 0; struct nand_chip *this = mtd->priv; size_t retlen, len, totlen; loff_t from; @@ -204,11 +204,18 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, } res = mtd->read(mtd, from, len, &retlen, buf); if (res < 0) { - if (retlen != len) { - pr_info("nand_bbt: error reading bad block table\n"); + if (mtd_is_eccerr(res)) { + pr_info("nand_bbt: ECC error in BBT at " + "0x%012llx\n", from & ~mtd->writesize); + return res; + } else if (mtd_is_bitflip(res)) { + pr_info("nand_bbt: corrected error in BBT at " + "0x%012llx\n", from & ~mtd->writesize); + ret = res; + } else { + pr_info("nand_bbt: error reading BBT\n"); return res; } - pr_warn("nand_bbt: ECC error while reading bad block table\n"); } /* Analyse data */ @@ -242,7 +249,7 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num, totlen -= len; from += len; } - return 0; + return ret; } /** -- cgit v0.10.2 From 623978de362a5faeb18d8395fa86089650642626 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 20 Sep 2011 18:35:34 -0700 Subject: mtd: nand: scrub BBT on ECC errors Now that `read_bbt()' returns ECC error codes properly, we handle those codes when checking the integrity of our flash-based BBT. The modifications can be described by this new policy: *) On any uncorrected ECC error, we invalidate the corresponding table and retry our version-checking integrity logic. *) On corrected bitflips, we mark both tables for re-writing to flash (a.k.a. scrubbing). Current integrity checks (i.e., comparing version numbers, etc.) should take care of all the cases that result in rescanning the device for bad blocks or falling back to the BBT as found in the mirror descriptor. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 0ed8591..11185aa 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -882,7 +882,7 @@ static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *b */ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) { - int i, chips, writeops, create, chipsel, res; + int i, chips, writeops, create, chipsel, res, res2; struct nand_chip *this = mtd->priv; struct nand_bbt_descr *td = this->bbt_td; struct nand_bbt_descr *md = this->bbt_md; @@ -899,6 +899,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc create = 0; rd = NULL; rd2 = NULL; + res = res2 = 0; /* Per chip or per device? */ chipsel = (td->options & NAND_BBT_PERCHIP) ? i : -1; /* Mirrored table available? */ @@ -951,11 +952,29 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc } /* Read back first? */ - if (rd) - read_abs_bbt(mtd, buf, rd, chipsel); + if (rd) { + res = read_abs_bbt(mtd, buf, rd, chipsel); + if (mtd_is_eccerr(res)) { + /* Mark table as invalid */ + rd->pages[i] = -1; + i--; + continue; + } + } /* If they weren't versioned, read both */ - if (rd2) - read_abs_bbt(mtd, buf, rd2, chipsel); + if (rd2) { + res2 = read_abs_bbt(mtd, buf, rd2, chipsel); + if (mtd_is_eccerr(res2)) { + /* Mark table as invalid */ + rd2->pages[i] = -1; + i--; + continue; + } + } + + /* Scrub the flash table(s)? */ + if (mtd_is_bitflip(res) || mtd_is_bitflip(res2)) + writeops = 0x03; /* Write the bad block table to the device? */ if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { -- cgit v0.10.2 From dadc17a3e34810ed411a62e6b4cafdf3e5e1d5c8 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 20 Sep 2011 18:35:57 -0700 Subject: mtd: nand: wait to set BBT version Because there are so many cases of checking, writing, and re-writing of the bad block table(s), we might as well wait until the we've settled on a valid, clean copy of the table. This also prevents us from falsely incrementing the table version. For example, we may have the following: Primary table, with version 0x02 Mirror table, with version 0x01 Primary table has uncorrectable ECC errors If we don't have this fix applied, then we will: Choose to read the primary table (higher version) Set mirror table version to 0x02 Read back primary table Invalidate table because of ECC errors Retry readback operation with mirror table, now version 0x02 Mirrored table reads cleanly Writeback BBT to primary table location (with "version 0x02") However, the mirrored table shouldn't have a new version number. Instead, we actually want: Choose to read the primary table (higher version) Read back primary table Invalidate table because of ECC errors Retry readback with mirror table (version 0x01) Mirrored table reads cleanly Set both tables to version 0x01 Writeback BBT to primary table location (version 0x01) Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 11185aa..e7976c7 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -909,11 +909,9 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc writeops = 0x03; } else if (td->pages[i] == -1) { rd = md; - td->version[i] = md->version[i]; writeops = 0x01; } else if (md->pages[i] == -1) { rd = td; - md->version[i] = td->version[i]; writeops = 0x02; } else if (td->version[i] == md->version[i]) { rd = td; @@ -921,11 +919,9 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc rd2 = md; } else if (((int8_t)(td->version[i] - md->version[i])) > 0) { rd = td; - md->version[i] = td->version[i]; writeops = 0x02; } else { rd = md; - td->version[i] = md->version[i]; writeops = 0x01; } } else { @@ -957,6 +953,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc if (mtd_is_eccerr(res)) { /* Mark table as invalid */ rd->pages[i] = -1; + rd->version[i] = 0; i--; continue; } @@ -967,6 +964,7 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc if (mtd_is_eccerr(res2)) { /* Mark table as invalid */ rd2->pages[i] = -1; + rd2->version[i] = 0; i--; continue; } @@ -976,6 +974,12 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc if (mtd_is_bitflip(res) || mtd_is_bitflip(res2)) writeops = 0x03; + /* Update version numbers before writing */ + if (md) { + td->version[i] = max(td->version[i], md->version[i]); + md->version[i] = td->version[i]; + } + /* Write the bad block table to the device? */ if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { res = write_bbt(mtd, buf, td, md, chipsel); -- cgit v0.10.2 From 752ed6c5f8c0ee182219ff8682f5a98e47ee866f Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Tue, 20 Sep 2011 18:36:42 -0700 Subject: mtd: nand: do not scan bad blocks with NAND_BBT_NO_OOB set Updates to our default function for creating bad block patterns have broken the "no OOB" feature. The NAND_BBT_NO_OOB option should not be set while scanning for bad blocks, but we've been passing all BBT options from nand_chip.bbt_options to the bad block scan. This causes us to hit the: BUG_ON(bd->options & NAND_BBT_NO_OOB); in create_bbt() when we scan the flash for bad blocks. Thus, while it can be legal to set NAND_BBT_NO_OOB in a custom badblock pattern descriptor (presumably with NAND_BBT_CREATE disabled?), we should not pass it through in our default function. Also, to help clarify and emphasize that the function creates bad block patterns only (not, for example, table descriptors for locating flash-based BBT), I renamed `nand_create_default_bbt_descr' to `nand_create_badblock_pattern'. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index e7976c7..783093d 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -1294,26 +1294,27 @@ static struct nand_bbt_descr bbt_mirror_no_bbt_descr = { .pattern = mirror_pattern }; +#define BADBLOCK_SCAN_MASK (~NAND_BBT_NO_OOB) /** - * nand_create_default_bbt_descr - [INTERN] Creates a BBT descriptor structure + * nand_create_badblock_pattern - [INTERN] Creates a BBT descriptor structure * @this: NAND chip to create descriptor for * * This function allocates and initializes a nand_bbt_descr for BBM detection - * based on the properties of "this". The new descriptor is stored in + * based on the properties of @this. The new descriptor is stored in * this->badblock_pattern. Thus, this->badblock_pattern should be NULL when * passed to this function. */ -static int nand_create_default_bbt_descr(struct nand_chip *this) +static int nand_create_badblock_pattern(struct nand_chip *this) { struct nand_bbt_descr *bd; if (this->badblock_pattern) { - pr_warn("BBT descr already allocated; not replacing\n"); + pr_warn("Bad block pattern already allocated; not replacing\n"); return -EINVAL; } bd = kzalloc(sizeof(*bd), GFP_KERNEL); if (!bd) return -ENOMEM; - bd->options = this->bbt_options; + bd->options = this->bbt_options & BADBLOCK_SCAN_MASK; bd->offs = this->badblockpos; bd->len = (this->options & NAND_BUSWIDTH_16) ? 2 : 1; bd->pattern = scan_ff_pattern; @@ -1367,7 +1368,7 @@ int nand_default_bbt(struct mtd_info *mtd) } if (!this->badblock_pattern) - nand_create_default_bbt_descr(this); + nand_create_badblock_pattern(this); return nand_scan_bbt(mtd, this->badblock_pattern); } -- cgit v0.10.2 From 6d77b9d0af57409c918ab9501866233082546ba6 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 7 Sep 2011 13:13:40 -0700 Subject: mtd: nand: invalidate cache on unaligned reads In rare cases, we are given an unaligned parameter `from' in `nand_do_read_ops()'. In such cases, we use the page cache (chip->buffers->databuf) as an intermediate buffer before dumping to the client buffer. However, there are also cases where this buffer is not cleanly reusable. In those cases, we need to make sure that we explicitly invalidate the cache. This patch prevents accidental reusage of the page cache, and for me, this solves some problems I come across when reading a corrupted BBT from flash (NAND_BBT_USE_FLASH and NAND_BBT_NO_OOB). Note: the rare "unaligned" case is a result of the extra BBT pattern + version located in the data area instead of OOB. Also, this patch disables caching on raw reads, since we are reading without error correction. This is, obviously, prone to errors and should not be cached. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index c9767b5..51653d9 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1479,14 +1479,22 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, else ret = chip->ecc.read_page(mtd, chip, bufpoi, page); - if (ret < 0) + if (ret < 0) { + if (!aligned) + /* Invalidate page cache */ + chip->pagebuf = -1; break; + } /* Transfer not aligned data */ if (!aligned) { if (!NAND_SUBPAGE_READ(chip) && !oob && - !(mtd->ecc_stats.failed - stats.failed)) + !(mtd->ecc_stats.failed - stats.failed) && + (ops->mode != MTD_OPS_RAW)) chip->pagebuf = realpage; + else + /* Invalidate page cache */ + chip->pagebuf = -1; memcpy(buf, chip->buffers->databuf + col, bytes); } -- cgit v0.10.2 From 75b66d8ccd5772b00a7328c2cf75bc506ec532a1 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 7 Sep 2011 13:13:41 -0700 Subject: mtd: nand: switch `check_pattern()' to standard `memcmp()' A portion of the `check_pattern()' function is basically a `memcmp()'. Since it's possible for `memcmp()' to be optimized for a particular architecture, we should use it instead. Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 783093d..5c9c0b2 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -107,10 +107,8 @@ static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_desc p += end; /* Compare the pattern */ - for (i = 0; i < td->len; i++) { - if (p[i] != td->pattern[i]) - return -1; - } + if (memcmp(p, td->pattern, td->len)) + return -1; if (td->options & NAND_BBT_SCANEMPTY) { p += td->len; -- cgit v0.10.2 From 5172ac1c6d2c1e631bc39ddf2d9334e05f69b022 Mon Sep 17 00:00:00 2001 From: Wolfram Stering Date: Fri, 23 Sep 2011 13:53:44 +0200 Subject: mtd: mxc_nand: preset_v1_v2: unlock all NAND flash blocks For NFC v1, the unlock end block address was 0x4000, which would only unlock the first 32 blocks of the NAND flash. Change that value to 0xffff to unlock all available blocks, as is done for NFC v21 as well. Signed-off-by: Michael Thalmeier Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 4d4c677..74a43b8 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -845,7 +845,7 @@ static void preset_v1_v2(struct mtd_info *mtd) writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR3); } else if (nfc_is_v1()) { writew(0x0, NFC_V1_UNLOCKSTART_BLKADDR); - writew(0x4000, NFC_V1_UNLOCKEND_BLKADDR); + writew(0xffff, NFC_V1_UNLOCKEND_BLKADDR); } else BUG(); -- cgit v0.10.2 From ada766e959f1040311e05b11dd04921f4c29d5cc Mon Sep 17 00:00:00 2001 From: Mikhail Kshevetskiy Date: Fri, 23 Sep 2011 19:36:18 +0400 Subject: mtd: m25p80: add support for at25df321a spi data flash Signed-off-by: Mikhail Kshevetskiy Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index e6ba034..60177fe 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -655,6 +655,7 @@ static const struct spi_device_id m25p_ids[] = { { "at25fs040", INFO(0x1f6604, 0, 64 * 1024, 8, SECT_4K) }, { "at25df041a", INFO(0x1f4401, 0, 64 * 1024, 8, SECT_4K) }, + { "at25df321a", INFO(0x1f4701, 0, 64 * 1024, 64, SECT_4K) }, { "at25df641", INFO(0x1f4800, 0, 64 * 1024, 128, SECT_4K) }, { "at26f004", INFO(0x1f0400, 0, 64 * 1024, 8, SECT_4K) }, -- cgit v0.10.2 From 1bba688b5a32079db616f281c13f00944d74020b Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Mon, 26 Sep 2011 10:13:03 +0800 Subject: mtd: r852: make r852_pm_ops static It is not used outside this driver so no need to make the symbol global. Also make r852_suspend and r852_resume static. Signed-off-by: Axel Lin Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c index cae2e01..f20f393 100644 --- a/drivers/mtd/nand/r852.c +++ b/drivers/mtd/nand/r852.c @@ -1027,7 +1027,7 @@ void r852_shutdown(struct pci_dev *pci_dev) } #ifdef CONFIG_PM -int r852_suspend(struct device *device) +static int r852_suspend(struct device *device) { struct r852_device *dev = pci_get_drvdata(to_pci_dev(device)); @@ -1048,7 +1048,7 @@ int r852_suspend(struct device *device) return 0; } -int r852_resume(struct device *device) +static int r852_resume(struct device *device) { struct r852_device *dev = pci_get_drvdata(to_pci_dev(device)); @@ -1092,7 +1092,7 @@ static const struct pci_device_id r852_pci_id_tbl[] = { MODULE_DEVICE_TABLE(pci, r852_pci_id_tbl); -SIMPLE_DEV_PM_OPS(r852_pm_ops, r852_suspend, r852_resume); +static SIMPLE_DEV_PM_OPS(r852_pm_ops, r852_suspend, r852_resume); static struct pci_driver r852_pci_driver = { .name = DRV_NAME, -- cgit v0.10.2 From 16f7eca5871ad09b8f6c44ba8cb4d8185833a1ee Mon Sep 17 00:00:00 2001 From: Dan McGee Date: Wed, 28 Sep 2011 00:21:42 -0500 Subject: mtd: mark block device queue as non-rotational This is similar to what the nbd driver does, among others. Signed-off-by: Dan McGee Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index ca38569..ed8b5e7 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -426,6 +426,8 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) new->rq->queuedata = new; blk_queue_logical_block_size(new->rq, tr->blksize); + queue_flag_set_unlocked(QUEUE_FLAG_NONROT, new->rq); + if (tr->discard) { queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, new->rq); new->rq->limits.max_discard_sectors = UINT_MAX; -- cgit v0.10.2 From 86a9893d08420a320191a1bcc0136ec2b6b04595 Mon Sep 17 00:00:00 2001 From: Shaohui Xie Date: Fri, 30 Sep 2011 15:08:38 +0800 Subject: mtd: m25p80: add EON flash EN25Q32B into spi flash id table Add support for EON spi flash EN25Q32B, which is not listed in id table, need to add it in the id table to support the EON flash. Signed-off-by: Shaohui Xie Signed-off-by: Kumar Gala Acked-by: Mike Frysinger Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 60177fe..02aecac 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -666,6 +666,7 @@ static const struct spi_device_id m25p_ids[] = { /* EON -- en25xxx */ { "en25f32", INFO(0x1c3116, 0, 64 * 1024, 64, SECT_4K) }, { "en25p32", INFO(0x1c2016, 0, 64 * 1024, 64, 0) }, + { "en25q32b", INFO(0x1c3016, 0, 64 * 1024, 64, 0) }, { "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) }, /* Intel/Numonyx -- xxxs33b */ -- cgit v0.10.2 From efa2ca73a7bc1a8f8e66bcfad33391746819ffe6 Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Wed, 5 Oct 2011 15:22:34 +0200 Subject: mtd: Add DiskOnChip G3 support Add support for DiskOnChip G3 chips. The support is quite limited yet : - no flash writes/erases are implemented - ECC fixes are not implemented - powerdown is not implemented - IPL handling is not yet done On the brighter side, the chip reading does work. Signed-off-by: Robert Jarzmik diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig index 35081ce..6d91a1f 100644 --- a/drivers/mtd/devices/Kconfig +++ b/drivers/mtd/devices/Kconfig @@ -249,6 +249,16 @@ config MTD_DOC2001PLUS under "NAND Flash Device Drivers" (currently that driver does not support all Millennium Plus devices). +config MTD_DOCG3 + tristate "M-Systems Disk-On-Chip G3" + ---help--- + This provides an MTD device driver for the M-Systems DiskOnChip + G3 devices. + + The driver provides access to G3 DiskOnChip, distributed by + M-Systems and now Sandisk. The support is very experimental, + and doesn't give access to any write operations. + config MTD_DOCPROBE tristate select MTD_DOCECC diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile index f3226b1..56c7cd4 100644 --- a/drivers/mtd/devices/Makefile +++ b/drivers/mtd/devices/Makefile @@ -5,6 +5,7 @@ obj-$(CONFIG_MTD_DOC2000) += doc2000.o obj-$(CONFIG_MTD_DOC2001) += doc2001.o obj-$(CONFIG_MTD_DOC2001PLUS) += doc2001plus.o +obj-$(CONFIG_MTD_DOCG3) += docg3.o obj-$(CONFIG_MTD_DOCPROBE) += docprobe.o obj-$(CONFIG_MTD_DOCECC) += docecc.o obj-$(CONFIG_MTD_SLRAM) += slram.o @@ -17,3 +18,5 @@ obj-$(CONFIG_MTD_BLOCK2MTD) += block2mtd.o obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataflash.o obj-$(CONFIG_MTD_M25P80) += m25p80.o obj-$(CONFIG_MTD_SST25L) += sst25l.o + +CFLAGS_docg3.o += -I$(src) \ No newline at end of file diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c new file mode 100644 index 0000000..bdcf5df --- /dev/null +++ b/drivers/mtd/devices/docg3.c @@ -0,0 +1,1114 @@ +/* + * Handles the M-Systems DiskOnChip G3 chip + * + * Copyright (C) 2011 Robert Jarzmik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define CREATE_TRACE_POINTS +#include "docg3.h" + +/* + * This driver handles the DiskOnChip G3 flash memory. + * + * As no specification is available from M-Systems/Sandisk, this drivers lacks + * several functions available on the chip, as : + * - block erase + * - page write + * - IPL write + * - ECC fixing (lack of BCH algorith understanding) + * - powerdown / powerup + * + * The bus data width (8bits versus 16bits) is not handled (if_cfg flag), and + * the driver assumes a 16bits data bus. + * + * DocG3 relies on 2 ECC algorithms, which are handled in hardware : + * - a 1 byte Hamming code stored in the OOB for each page + * - a 7 bytes BCH code stored in the OOB for each page + * The BCH part is only used for check purpose, no correction is available as + * some information is missing. What is known is that : + * - BCH is in GF(2^14) + * - BCH is over data of 520 bytes (512 page + 7 page_info bytes + * + 1 hamming byte) + * - BCH can correct up to 4 bits (t = 4) + * - BCH syndroms are calculated in hardware, and checked in hardware as well + * + */ + +static inline u8 doc_readb(struct docg3 *docg3, u16 reg) +{ + u8 val = readb(docg3->base + reg); + + trace_docg3_io(0, 8, reg, (int)val); + return val; +} + +static inline u16 doc_readw(struct docg3 *docg3, u16 reg) +{ + u16 val = readw(docg3->base + reg); + + trace_docg3_io(0, 16, reg, (int)val); + return val; +} + +static inline void doc_writeb(struct docg3 *docg3, u8 val, u16 reg) +{ + writeb(val, docg3->base + reg); + trace_docg3_io(1, 16, reg, val); +} + +static inline void doc_writew(struct docg3 *docg3, u16 val, u16 reg) +{ + writew(val, docg3->base + reg); + trace_docg3_io(1, 16, reg, val); +} + +static inline void doc_flash_command(struct docg3 *docg3, u8 cmd) +{ + doc_writeb(docg3, cmd, DOC_FLASHCOMMAND); +} + +static inline void doc_flash_sequence(struct docg3 *docg3, u8 seq) +{ + doc_writeb(docg3, seq, DOC_FLASHSEQUENCE); +} + +static inline void doc_flash_address(struct docg3 *docg3, u8 addr) +{ + doc_writeb(docg3, addr, DOC_FLASHADDRESS); +} + +static char const *part_probes[] = { "cmdlinepart", "saftlpart", NULL }; + +static int doc_register_readb(struct docg3 *docg3, int reg) +{ + u8 val; + + doc_writew(docg3, reg, DOC_READADDRESS); + val = doc_readb(docg3, reg); + doc_vdbg("Read register %04x : %02x\n", reg, val); + return val; +} + +static int doc_register_readw(struct docg3 *docg3, int reg) +{ + u16 val; + + doc_writew(docg3, reg, DOC_READADDRESS); + val = doc_readw(docg3, reg); + doc_vdbg("Read register %04x : %04x\n", reg, val); + return val; +} + +/** + * doc_delay - delay docg3 operations + * @docg3: the device + * @nbNOPs: the number of NOPs to issue + * + * As no specification is available, the right timings between chip commands are + * unknown. The only available piece of information are the observed nops on a + * working docg3 chip. + * Therefore, doc_delay relies on a busy loop of NOPs, instead of scheduler + * friendlier msleep() functions or blocking mdelay(). + */ +static void doc_delay(struct docg3 *docg3, int nbNOPs) +{ + int i; + + doc_dbg("NOP x %d\n", nbNOPs); + for (i = 0; i < nbNOPs; i++) + doc_writeb(docg3, 0, DOC_NOP); +} + +static int is_prot_seq_error(struct docg3 *docg3) +{ + int ctrl; + + ctrl = doc_register_readb(docg3, DOC_FLASHCONTROL); + return ctrl & (DOC_CTRL_PROTECTION_ERROR | DOC_CTRL_SEQUENCE_ERROR); +} + +static int doc_is_ready(struct docg3 *docg3) +{ + int ctrl; + + ctrl = doc_register_readb(docg3, DOC_FLASHCONTROL); + return ctrl & DOC_CTRL_FLASHREADY; +} + +static int doc_wait_ready(struct docg3 *docg3) +{ + int maxWaitCycles = 100; + + do { + doc_delay(docg3, 4); + cpu_relax(); + } while (!doc_is_ready(docg3) && maxWaitCycles--); + doc_delay(docg3, 2); + if (maxWaitCycles > 0) + return 0; + else + return -EIO; +} + +static int doc_reset_seq(struct docg3 *docg3) +{ + int ret; + + doc_writeb(docg3, 0x10, DOC_FLASHCONTROL); + doc_flash_sequence(docg3, DOC_SEQ_RESET); + doc_flash_command(docg3, DOC_CMD_RESET); + doc_delay(docg3, 2); + ret = doc_wait_ready(docg3); + + doc_dbg("doc_reset_seq() -> isReady=%s\n", ret ? "false" : "true"); + return ret; +} + +/** + * doc_read_data_area - Read data from data area + * @docg3: the device + * @buf: the buffer to fill in + * @len: the lenght to read + * @first: first time read, DOC_READADDRESS should be set + * + * Reads bytes from flash data. Handles the single byte / even bytes reads. + */ +static void doc_read_data_area(struct docg3 *docg3, void *buf, int len, + int first) +{ + int i, cdr, len4; + u16 data16, *dst16; + u8 data8, *dst8; + + doc_dbg("doc_read_data_area(buf=%p, len=%d)\n", buf, len); + cdr = len & 0x3; + len4 = len - cdr; + + if (first) + doc_writew(docg3, DOC_IOSPACE_DATA, DOC_READADDRESS); + dst16 = buf; + for (i = 0; i < len4; i += 2) { + data16 = doc_readw(docg3, DOC_IOSPACE_DATA); + *dst16 = data16; + dst16++; + } + + if (cdr) { + doc_writew(docg3, DOC_IOSPACE_DATA | DOC_READADDR_ONE_BYTE, + DOC_READADDRESS); + doc_delay(docg3, 1); + dst8 = (u8 *)dst16; + for (i = 0; i < cdr; i++) { + data8 = doc_readb(docg3, DOC_IOSPACE_DATA); + *dst8 = data8; + dst8++; + } + } +} + +/** + * doc_set_data_mode - Sets the flash to reliable data mode + * @docg3: the device + * + * The reliable data mode is a bit slower than the fast mode, but less errors + * occur. Entering the reliable mode cannot be done without entering the fast + * mode first. + */ +static void doc_set_reliable_mode(struct docg3 *docg3) +{ + doc_dbg("doc_set_reliable_mode()\n"); + doc_flash_sequence(docg3, DOC_SEQ_SET_MODE); + doc_flash_command(docg3, DOC_CMD_FAST_MODE); + doc_flash_command(docg3, DOC_CMD_RELIABLE_MODE); + doc_delay(docg3, 2); +} + +/** + * doc_set_asic_mode - Set the ASIC mode + * @docg3: the device + * @mode: the mode + * + * The ASIC can work in 3 modes : + * - RESET: all registers are zeroed + * - NORMAL: receives and handles commands + * - POWERDOWN: minimal poweruse, flash parts shut off + */ +static void doc_set_asic_mode(struct docg3 *docg3, u8 mode) +{ + int i; + + for (i = 0; i < 12; i++) + doc_readb(docg3, DOC_IOSPACE_IPL); + + mode |= DOC_ASICMODE_MDWREN; + doc_dbg("doc_set_asic_mode(%02x)\n", mode); + doc_writeb(docg3, mode, DOC_ASICMODE); + doc_writeb(docg3, ~mode, DOC_ASICMODECONFIRM); + doc_delay(docg3, 1); +} + +/** + * doc_set_device_id - Sets the devices id for cascaded G3 chips + * @docg3: the device + * @id: the chip to select (amongst 0, 1, 2, 3) + * + * There can be 4 cascaded G3 chips. This function selects the one which will + * should be the active one. + */ +static void doc_set_device_id(struct docg3 *docg3, int id) +{ + u8 ctrl; + + doc_dbg("doc_set_device_id(%d)\n", id); + doc_writeb(docg3, id, DOC_DEVICESELECT); + ctrl = doc_register_readb(docg3, DOC_FLASHCONTROL); + + ctrl &= ~DOC_CTRL_VIOLATION; + ctrl |= DOC_CTRL_CE; + doc_writeb(docg3, ctrl, DOC_FLASHCONTROL); +} + +/** + * doc_set_extra_page_mode - Change flash page layout + * @docg3: the device + * + * Normally, the flash page is split into the data (512 bytes) and the out of + * band data (16 bytes). For each, 4 more bytes can be accessed, where the wear + * leveling counters are stored. To access this last area of 4 bytes, a special + * mode must be input to the flash ASIC. + * + * Returns 0 if no error occured, -EIO else. + */ +static int doc_set_extra_page_mode(struct docg3 *docg3) +{ + int fctrl; + + doc_dbg("doc_set_extra_page_mode()\n"); + doc_flash_sequence(docg3, DOC_SEQ_PAGE_SIZE_532); + doc_flash_command(docg3, DOC_CMD_PAGE_SIZE_532); + doc_delay(docg3, 2); + + fctrl = doc_register_readb(docg3, DOC_FLASHCONTROL); + if (fctrl & (DOC_CTRL_PROTECTION_ERROR | DOC_CTRL_SEQUENCE_ERROR)) + return -EIO; + else + return 0; +} + +/** + * doc_seek - Set both flash planes to the specified block, page for reading + * @docg3: the device + * @block0: the first plane block index + * @block1: the second plane block index + * @page: the page index within the block + * @wear: if true, read will occur on the 4 extra bytes of the wear area + * @ofs: offset in page to read + * + * Programs the flash even and odd planes to the specific block and page. + * Alternatively, programs the flash to the wear area of the specified page. + */ +static int doc_read_seek(struct docg3 *docg3, int block0, int block1, int page, + int wear, int ofs) +{ + int sector, ret = 0; + + doc_dbg("doc_seek(blocks=(%d,%d), page=%d, ofs=%d, wear=%d)\n", + block0, block1, page, ofs, wear); + + if (!wear && (ofs < 2 * DOC_LAYOUT_PAGE_SIZE)) { + doc_flash_sequence(docg3, DOC_SEQ_SET_PLANE1); + doc_flash_command(docg3, DOC_CMD_READ_PLANE1); + doc_delay(docg3, 2); + } else { + doc_flash_sequence(docg3, DOC_SEQ_SET_PLANE2); + doc_flash_command(docg3, DOC_CMD_READ_PLANE2); + doc_delay(docg3, 2); + } + + doc_set_reliable_mode(docg3); + if (wear) + ret = doc_set_extra_page_mode(docg3); + if (ret) + goto out; + + sector = (block0 << DOC_ADDR_BLOCK_SHIFT) + (page & DOC_ADDR_PAGE_MASK); + doc_flash_sequence(docg3, DOC_SEQ_READ); + doc_flash_command(docg3, DOC_CMD_PROG_BLOCK_ADDR); + doc_delay(docg3, 1); + doc_flash_address(docg3, sector & 0xff); + doc_flash_address(docg3, (sector >> 8) & 0xff); + doc_flash_address(docg3, (sector >> 16) & 0xff); + doc_delay(docg3, 1); + + sector = (block1 << DOC_ADDR_BLOCK_SHIFT) + (page & DOC_ADDR_PAGE_MASK); + doc_flash_command(docg3, DOC_CMD_PROG_BLOCK_ADDR); + doc_delay(docg3, 1); + doc_flash_address(docg3, sector & 0xff); + doc_flash_address(docg3, (sector >> 8) & 0xff); + doc_flash_address(docg3, (sector >> 16) & 0xff); + doc_delay(docg3, 2); + +out: + return ret; +} + +/** + * doc_read_page_ecc_init - Initialize hardware ECC engine + * @docg3: the device + * @len: the number of bytes covered by the ECC (BCH covered) + * + * The function does initialize the hardware ECC engine to compute the Hamming + * ECC (on 1 byte) and the BCH Syndroms (on 7 bytes). + * + * Return 0 if succeeded, -EIO on error + */ +static int doc_read_page_ecc_init(struct docg3 *docg3, int len) +{ + doc_writew(docg3, DOC_ECCCONF0_READ_MODE + | DOC_ECCCONF0_BCH_ENABLE | DOC_ECCCONF0_HAMMING_ENABLE + | (len & DOC_ECCCONF0_DATA_BYTES_MASK), + DOC_ECCCONF0); + doc_delay(docg3, 4); + doc_register_readb(docg3, DOC_FLASHCONTROL); + return doc_wait_ready(docg3); +} + +/** + * doc_read_page_prepare - Prepares reading data from a flash page + * @docg3: the device + * @block0: the first plane block index on flash memory + * @block1: the second plane block index on flash memory + * @page: the page index in the block + * @offset: the offset in the page (must be a multiple of 4) + * + * Prepares the page to be read in the flash memory : + * - tell ASIC to map the flash pages + * - tell ASIC to be in read mode + * + * After a call to this method, a call to doc_read_page_finish is mandatory, + * to end the read cycle of the flash. + * + * Read data from a flash page. The length to be read must be between 0 and + * (page_size + oob_size + wear_size), ie. 532, and a multiple of 4 (because + * the extra bytes reading is not implemented). + * + * As pages are grouped by 2 (in 2 planes), reading from a page must be done + * in two steps: + * - one read of 512 bytes at offset 0 + * - one read of 512 bytes at offset 512 + 16 + * + * Returns 0 if successful, -EIO if a read error occured. + */ +static int doc_read_page_prepare(struct docg3 *docg3, int block0, int block1, + int page, int offset) +{ + int wear_area = 0, ret = 0; + + doc_dbg("doc_read_page_prepare(blocks=(%d,%d), page=%d, ofsInPage=%d)\n", + block0, block1, page, offset); + if (offset >= DOC_LAYOUT_WEAR_OFFSET) + wear_area = 1; + if (!wear_area && offset > (DOC_LAYOUT_PAGE_OOB_SIZE * 2)) + return -EINVAL; + + doc_set_device_id(docg3, docg3->device_id); + ret = doc_reset_seq(docg3); + if (ret) + goto err; + + /* Program the flash address block and page */ + ret = doc_read_seek(docg3, block0, block1, page, wear_area, offset); + if (ret) + goto err; + + doc_flash_command(docg3, DOC_CMD_READ_ALL_PLANES); + doc_delay(docg3, 2); + doc_wait_ready(docg3); + + doc_flash_command(docg3, DOC_CMD_SET_ADDR_READ); + doc_delay(docg3, 1); + if (offset >= DOC_LAYOUT_PAGE_SIZE * 2) + offset -= 2 * DOC_LAYOUT_PAGE_SIZE; + doc_flash_address(docg3, offset >> 2); + doc_delay(docg3, 1); + doc_wait_ready(docg3); + + doc_flash_command(docg3, DOC_CMD_READ_FLASH); + + return 0; +err: + doc_writeb(docg3, 0, DOC_DATAEND); + doc_delay(docg3, 2); + return -EIO; +} + +/** + * doc_read_page_getbytes - Reads bytes from a prepared page + * @docg3: the device + * @len: the number of bytes to be read (must be a multiple of 4) + * @buf: the buffer to be filled in + * @first: 1 if first time read, DOC_READADDRESS should be set + * + */ +static int doc_read_page_getbytes(struct docg3 *docg3, int len, u_char *buf, + int first) +{ + doc_read_data_area(docg3, buf, len, first); + doc_delay(docg3, 2); + return len; +} + +/** + * doc_get_hw_bch_syndroms - Get hardware calculated BCH syndroms + * @docg3: the device + * @syns: the array of 7 integers where the syndroms will be stored + */ +static void doc_get_hw_bch_syndroms(struct docg3 *docg3, int *syns) +{ + int i; + + for (i = 0; i < DOC_ECC_BCH_SIZE; i++) + syns[i] = doc_register_readb(docg3, DOC_BCH_SYNDROM(i)); +} + +/** + * doc_read_page_finish - Ends reading of a flash page + * @docg3: the device + * + * As a side effect, resets the chip selector to 0. This ensures that after each + * read operation, the floor 0 is selected. Therefore, if the systems halts, the + * reboot will boot on floor 0, where the IPL is. + */ +static void doc_read_page_finish(struct docg3 *docg3) +{ + doc_writeb(docg3, 0, DOC_DATAEND); + doc_delay(docg3, 2); + doc_set_device_id(docg3, 0); +} + +/** + * calc_block_sector - Calculate blocks, pages and ofs. + + * @from: offset in flash + * @block0: first plane block index calculated + * @block1: second plane block index calculated + * @page: page calculated + * @ofs: offset in page + */ +static void calc_block_sector(loff_t from, int *block0, int *block1, int *page, + int *ofs) +{ + uint sector; + + sector = from / DOC_LAYOUT_PAGE_SIZE; + *block0 = sector / (DOC_LAYOUT_PAGES_PER_BLOCK * DOC_LAYOUT_NBPLANES) + * DOC_LAYOUT_NBPLANES; + *block1 = *block0 + 1; + *page = sector % (DOC_LAYOUT_PAGES_PER_BLOCK * DOC_LAYOUT_NBPLANES); + *page /= DOC_LAYOUT_NBPLANES; + if (sector % 2) + *ofs = DOC_LAYOUT_PAGE_OOB_SIZE; + else + *ofs = 0; +} + +/** + * doc_read - Read bytes from flash + * @mtd: the device + * @from: the offset from first block and first page, in bytes, aligned on page + * size + * @len: the number of bytes to read (must be a multiple of 4) + * @retlen: the number of bytes actually read + * @buf: the filled in buffer + * + * Reads flash memory pages. This function does not read the OOB chunk, but only + * the page data. + * + * Returns 0 if read successfull, of -EIO, -EINVAL if an error occured + */ +static int doc_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + struct docg3 *docg3 = mtd->priv; + int block0, block1, page, readlen, ret, ofs = 0; + int syn[DOC_ECC_BCH_SIZE], eccconf1; + u8 oob[DOC_LAYOUT_OOB_SIZE]; + + ret = -EINVAL; + doc_dbg("doc_read(from=%lld, len=%zu, buf=%p)\n", from, len, buf); + if (from % DOC_LAYOUT_PAGE_SIZE) + goto err; + if (len % 4) + goto err; + calc_block_sector(from, &block0, &block1, &page, &ofs); + if (block1 > docg3->max_block) + goto err; + + *retlen = 0; + ret = 0; + readlen = min_t(size_t, len, (size_t)DOC_LAYOUT_PAGE_SIZE); + while (!ret && len > 0) { + readlen = min_t(size_t, len, (size_t)DOC_LAYOUT_PAGE_SIZE); + ret = doc_read_page_prepare(docg3, block0, block1, page, ofs); + if (ret < 0) + goto err; + ret = doc_read_page_ecc_init(docg3, DOC_ECC_BCH_COVERED_BYTES); + if (ret < 0) + goto err_in_read; + ret = doc_read_page_getbytes(docg3, readlen, buf, 1); + if (ret < readlen) + goto err_in_read; + ret = doc_read_page_getbytes(docg3, DOC_LAYOUT_OOB_SIZE, + oob, 0); + if (ret < DOC_LAYOUT_OOB_SIZE) + goto err_in_read; + + *retlen += readlen; + buf += readlen; + len -= readlen; + + ofs ^= DOC_LAYOUT_PAGE_OOB_SIZE; + if (ofs == 0) + page += 2; + if (page > DOC_ADDR_PAGE_MASK) { + page = 0; + block0 += 2; + block1 += 2; + } + + /* + * There should be a BCH bitstream fixing algorithm here ... + * By now, a page read failure is triggered by BCH error + */ + doc_get_hw_bch_syndroms(docg3, syn); + eccconf1 = doc_register_readb(docg3, DOC_ECCCONF1); + + doc_dbg("OOB - INFO: %02x:%02x:%02x:%02x:%02x:%02x:%02x\n", + oob[0], oob[1], oob[2], oob[3], oob[4], + oob[5], oob[6]); + doc_dbg("OOB - HAMMING: %02x\n", oob[7]); + doc_dbg("OOB - BCH_ECC: %02x:%02x:%02x:%02x:%02x:%02x:%02x\n", + oob[8], oob[9], oob[10], oob[11], oob[12], + oob[13], oob[14]); + doc_dbg("OOB - UNUSED: %02x\n", oob[15]); + doc_dbg("ECC checks: ECCConf1=%x\n", eccconf1); + doc_dbg("ECC BCH syndrom: %02x:%02x:%02x:%02x:%02x:%02x:%02x\n", + syn[0], syn[1], syn[2], syn[3], syn[4], syn[5], syn[6]); + + ret = -EBADMSG; + if (block0 >= DOC_LAYOUT_BLOCK_FIRST_DATA) { + if (eccconf1 & DOC_ECCCONF1_BCH_SYNDROM_ERR) + goto err_in_read; + if (is_prot_seq_error(docg3)) + goto err_in_read; + } + doc_read_page_finish(docg3); + } + + return 0; +err_in_read: + doc_read_page_finish(docg3); +err: + return ret; +} + +/** + * doc_read_oob - Read out of band bytes from flash + * @mtd: the device + * @from: the offset from first block and first page, in bytes, aligned on page + * size + * @ops: the mtd oob structure + * + * Reads flash memory OOB area of pages. + * + * Returns 0 if read successfull, of -EIO, -EINVAL if an error occured + */ +static int doc_read_oob(struct mtd_info *mtd, loff_t from, + struct mtd_oob_ops *ops) +{ + struct docg3 *docg3 = mtd->priv; + int block0, block1, page, ofs, ret; + u8 *buf = ops->oobbuf; + size_t len = ops->ooblen; + + doc_dbg("doc_read_oob(from=%lld, buf=%p, len=%zu)\n", from, buf, len); + if (len != DOC_LAYOUT_OOB_SIZE) + return -EINVAL; + + switch (ops->mode) { + case MTD_OPS_PLACE_OOB: + buf += ops->ooboffs; + break; + default: + break; + } + + calc_block_sector(from, &block0, &block1, &page, &ofs); + if (block1 > docg3->max_block) + return -EINVAL; + + ret = doc_read_page_prepare(docg3, block0, block1, page, + ofs + DOC_LAYOUT_PAGE_SIZE); + if (!ret) + ret = doc_read_page_ecc_init(docg3, DOC_LAYOUT_OOB_SIZE); + if (!ret) + ret = doc_read_page_getbytes(docg3, DOC_LAYOUT_OOB_SIZE, + buf, 1); + doc_read_page_finish(docg3); + + if (ret > 0) + ops->oobretlen = ret; + else + ops->oobretlen = 0; + return (ret > 0) ? 0 : ret; +} + +static int doc_reload_bbt(struct docg3 *docg3) +{ + int block = DOC_LAYOUT_BLOCK_BBT; + int ret = 0, nbpages, page; + u_char *buf = docg3->bbt; + + nbpages = DIV_ROUND_UP(docg3->max_block + 1, 8 * DOC_LAYOUT_PAGE_SIZE); + for (page = 0; !ret && (page < nbpages); page++) { + ret = doc_read_page_prepare(docg3, block, block + 1, + page + DOC_LAYOUT_PAGE_BBT, 0); + if (!ret) + ret = doc_read_page_ecc_init(docg3, + DOC_LAYOUT_PAGE_SIZE); + if (!ret) + doc_read_page_getbytes(docg3, DOC_LAYOUT_PAGE_SIZE, + buf, 1); + buf += DOC_LAYOUT_PAGE_SIZE; + } + doc_read_page_finish(docg3); + return ret; +} + +/** + * doc_block_isbad - Checks whether a block is good or not + * @mtd: the device + * @from: the offset to find the correct block + * + * Returns 1 if block is bad, 0 if block is good + */ +static int doc_block_isbad(struct mtd_info *mtd, loff_t from) +{ + struct docg3 *docg3 = mtd->priv; + int block0, block1, page, ofs, is_good; + + calc_block_sector(from, &block0, &block1, &page, &ofs); + doc_dbg("doc_block_isbad(from=%lld) => block=(%d,%d), page=%d, ofs=%d\n", + from, block0, block1, page, ofs); + + if (block0 < DOC_LAYOUT_BLOCK_FIRST_DATA) + return 0; + if (block1 > docg3->max_block) + return -EINVAL; + + is_good = docg3->bbt[block0 >> 3] & (1 << (block0 & 0x7)); + return !is_good; +} + +/** + * doc_get_erase_count - Get block erase count + * @docg3: the device + * @from: the offset in which the block is. + * + * Get the number of times a block was erased. The number is the maximum of + * erase times between first and second plane (which should be equal normally). + * + * Returns The number of erases, or -EINVAL or -EIO on error. + */ +static int doc_get_erase_count(struct docg3 *docg3, loff_t from) +{ + u8 buf[DOC_LAYOUT_WEAR_SIZE]; + int ret, plane1_erase_count, plane2_erase_count; + int block0, block1, page, ofs; + + doc_dbg("doc_get_erase_count(from=%lld, buf=%p)\n", from, buf); + if (from % DOC_LAYOUT_PAGE_SIZE) + return -EINVAL; + calc_block_sector(from, &block0, &block1, &page, &ofs); + if (block1 > docg3->max_block) + return -EINVAL; + + ret = doc_reset_seq(docg3); + if (!ret) + ret = doc_read_page_prepare(docg3, block0, block1, page, + ofs + DOC_LAYOUT_WEAR_OFFSET); + if (!ret) + ret = doc_read_page_getbytes(docg3, DOC_LAYOUT_WEAR_SIZE, + buf, 1); + doc_read_page_finish(docg3); + + if (ret || (buf[0] != DOC_ERASE_MARK) || (buf[2] != DOC_ERASE_MARK)) + return -EIO; + plane1_erase_count = (u8)(~buf[1]) | ((u8)(~buf[4]) << 8) + | ((u8)(~buf[5]) << 16); + plane2_erase_count = (u8)(~buf[3]) | ((u8)(~buf[6]) << 8) + | ((u8)(~buf[7]) << 16); + + return max(plane1_erase_count, plane2_erase_count); +} + +/* + * Debug sysfs entries + */ +static int dbg_flashctrl_show(struct seq_file *s, void *p) +{ + struct docg3 *docg3 = (struct docg3 *)s->private; + + int pos = 0; + u8 fctrl = doc_register_readb(docg3, DOC_FLASHCONTROL); + + pos += seq_printf(s, + "FlashControl : 0x%02x (%s,CE# %s,%s,%s,flash %s)\n", + fctrl, + fctrl & DOC_CTRL_VIOLATION ? "protocol violation" : "-", + fctrl & DOC_CTRL_CE ? "active" : "inactive", + fctrl & DOC_CTRL_PROTECTION_ERROR ? "protection error" : "-", + fctrl & DOC_CTRL_SEQUENCE_ERROR ? "sequence error" : "-", + fctrl & DOC_CTRL_FLASHREADY ? "ready" : "not ready"); + return pos; +} +DEBUGFS_RO_ATTR(flashcontrol, dbg_flashctrl_show); + +static int dbg_asicmode_show(struct seq_file *s, void *p) +{ + struct docg3 *docg3 = (struct docg3 *)s->private; + + int pos = 0; + int pctrl = doc_register_readb(docg3, DOC_ASICMODE); + int mode = pctrl & 0x03; + + pos += seq_printf(s, + "%04x : RAM_WE=%d,RSTIN_RESET=%d,BDETCT_RESET=%d,WRITE_ENABLE=%d,POWERDOWN=%d,MODE=%d%d (", + pctrl, + pctrl & DOC_ASICMODE_RAM_WE ? 1 : 0, + pctrl & DOC_ASICMODE_RSTIN_RESET ? 1 : 0, + pctrl & DOC_ASICMODE_BDETCT_RESET ? 1 : 0, + pctrl & DOC_ASICMODE_MDWREN ? 1 : 0, + pctrl & DOC_ASICMODE_POWERDOWN ? 1 : 0, + mode >> 1, mode & 0x1); + + switch (mode) { + case DOC_ASICMODE_RESET: + pos += seq_printf(s, "reset"); + break; + case DOC_ASICMODE_NORMAL: + pos += seq_printf(s, "normal"); + break; + case DOC_ASICMODE_POWERDOWN: + pos += seq_printf(s, "powerdown"); + break; + } + pos += seq_printf(s, ")\n"); + return pos; +} +DEBUGFS_RO_ATTR(asic_mode, dbg_asicmode_show); + +static int dbg_device_id_show(struct seq_file *s, void *p) +{ + struct docg3 *docg3 = (struct docg3 *)s->private; + int pos = 0; + int id = doc_register_readb(docg3, DOC_DEVICESELECT); + + pos += seq_printf(s, "DeviceId = %d\n", id); + return pos; +} +DEBUGFS_RO_ATTR(device_id, dbg_device_id_show); + +static int dbg_protection_show(struct seq_file *s, void *p) +{ + struct docg3 *docg3 = (struct docg3 *)s->private; + int pos = 0; + int protect = doc_register_readb(docg3, DOC_PROTECTION); + int dps0 = doc_register_readb(docg3, DOC_DPS0_STATUS); + int dps0_low = doc_register_readb(docg3, DOC_DPS0_ADDRLOW); + int dps0_high = doc_register_readb(docg3, DOC_DPS0_ADDRHIGH); + int dps1 = doc_register_readb(docg3, DOC_DPS1_STATUS); + int dps1_low = doc_register_readb(docg3, DOC_DPS1_ADDRLOW); + int dps1_high = doc_register_readb(docg3, DOC_DPS1_ADDRHIGH); + + pos += seq_printf(s, "Protection = 0x%02x (", + protect); + if (protect & DOC_PROTECT_FOUNDRY_OTP_LOCK) + pos += seq_printf(s, "FOUNDRY_OTP_LOCK,"); + if (protect & DOC_PROTECT_CUSTOMER_OTP_LOCK) + pos += seq_printf(s, "CUSTOMER_OTP_LOCK,"); + if (protect & DOC_PROTECT_LOCK_INPUT) + pos += seq_printf(s, "LOCK_INPUT,"); + if (protect & DOC_PROTECT_STICKY_LOCK) + pos += seq_printf(s, "STICKY_LOCK,"); + if (protect & DOC_PROTECT_PROTECTION_ENABLED) + pos += seq_printf(s, "PROTECTION ON,"); + if (protect & DOC_PROTECT_IPL_DOWNLOAD_LOCK) + pos += seq_printf(s, "IPL_DOWNLOAD_LOCK,"); + if (protect & DOC_PROTECT_PROTECTION_ERROR) + pos += seq_printf(s, "PROTECT_ERR,"); + else + pos += seq_printf(s, "NO_PROTECT_ERR"); + pos += seq_printf(s, ")\n"); + + pos += seq_printf(s, "DPS0 = 0x%02x : " + "Protected area [0x%x - 0x%x] : OTP=%d, READ=%d, " + "WRITE=%d, HW_LOCK=%d, KEY_OK=%d\n", + dps0, dps0_low, dps0_high, + !!(dps0 & DOC_DPS_OTP_PROTECTED), + !!(dps0 & DOC_DPS_READ_PROTECTED), + !!(dps0 & DOC_DPS_WRITE_PROTECTED), + !!(dps0 & DOC_DPS_HW_LOCK_ENABLED), + !!(dps0 & DOC_DPS_KEY_OK)); + pos += seq_printf(s, "DPS1 = 0x%02x : " + "Protected area [0x%x - 0x%x] : OTP=%d, READ=%d, " + "WRITE=%d, HW_LOCK=%d, KEY_OK=%d\n", + dps1, dps1_low, dps1_high, + !!(dps1 & DOC_DPS_OTP_PROTECTED), + !!(dps1 & DOC_DPS_READ_PROTECTED), + !!(dps1 & DOC_DPS_WRITE_PROTECTED), + !!(dps1 & DOC_DPS_HW_LOCK_ENABLED), + !!(dps1 & DOC_DPS_KEY_OK)); + return pos; +} +DEBUGFS_RO_ATTR(protection, dbg_protection_show); + +static int __init doc_dbg_register(struct docg3 *docg3) +{ + struct dentry *root, *entry; + + root = debugfs_create_dir("docg3", NULL); + if (!root) + return -ENOMEM; + + entry = debugfs_create_file("flashcontrol", S_IRUSR, root, docg3, + &flashcontrol_fops); + if (entry) + entry = debugfs_create_file("asic_mode", S_IRUSR, root, + docg3, &asic_mode_fops); + if (entry) + entry = debugfs_create_file("device_id", S_IRUSR, root, + docg3, &device_id_fops); + if (entry) + entry = debugfs_create_file("protection", S_IRUSR, root, + docg3, &protection_fops); + if (entry) { + docg3->debugfs_root = root; + return 0; + } else { + debugfs_remove_recursive(root); + return -ENOMEM; + } +} + +static void __exit doc_dbg_unregister(struct docg3 *docg3) +{ + debugfs_remove_recursive(docg3->debugfs_root); +} + +/** + * doc_set_driver_info - Fill the mtd_info structure and docg3 structure + * @chip_id: The chip ID of the supported chip + * @mtd: The structure to fill + */ +static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd) +{ + struct docg3 *docg3 = mtd->priv; + int cfg; + + cfg = doc_register_readb(docg3, DOC_CONFIGURATION); + docg3->if_cfg = (cfg & DOC_CONF_IF_CFG ? 1 : 0); + + switch (chip_id) { + case DOC_CHIPID_G3: + mtd->name = "DiskOnChip G3"; + docg3->max_block = 2047; + break; + } + mtd->type = MTD_NANDFLASH; + /* + * Once write methods are added, the correct flags will be set. + * mtd->flags = MTD_CAP_NANDFLASH; + */ + mtd->flags = MTD_CAP_ROM; + mtd->size = (docg3->max_block + 1) * DOC_LAYOUT_BLOCK_SIZE; + mtd->erasesize = DOC_LAYOUT_BLOCK_SIZE * DOC_LAYOUT_NBPLANES; + mtd->writesize = DOC_LAYOUT_PAGE_SIZE; + mtd->oobsize = DOC_LAYOUT_OOB_SIZE; + mtd->owner = THIS_MODULE; + mtd->erase = NULL; + mtd->point = NULL; + mtd->unpoint = NULL; + mtd->read = doc_read; + mtd->write = NULL; + mtd->read_oob = doc_read_oob; + mtd->write_oob = NULL; + mtd->sync = NULL; + mtd->block_isbad = doc_block_isbad; +} + +/** + * doc_probe - Probe the IO space for a DiskOnChip G3 chip + * @pdev: platform device + * + * Probes for a G3 chip at the specified IO space in the platform data + * ressources. + * + * Returns 0 on success, -ENOMEM, -ENXIO on error + */ +static int __init docg3_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct docg3 *docg3; + struct mtd_info *mtd; + struct resource *ress; + int ret, bbt_nbpages; + u16 chip_id, chip_id_inv; + + ret = -ENOMEM; + docg3 = kzalloc(sizeof(struct docg3), GFP_KERNEL); + if (!docg3) + goto nomem1; + mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL); + if (!mtd) + goto nomem2; + mtd->priv = docg3; + + ret = -ENXIO; + ress = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!ress) { + dev_err(dev, "No I/O memory resource defined\n"); + goto noress; + } + docg3->base = ioremap(ress->start, DOC_IOSPACE_SIZE); + + docg3->dev = &pdev->dev; + docg3->device_id = 0; + doc_set_device_id(docg3, docg3->device_id); + doc_set_asic_mode(docg3, DOC_ASICMODE_RESET); + doc_set_asic_mode(docg3, DOC_ASICMODE_NORMAL); + + chip_id = doc_register_readw(docg3, DOC_CHIPID); + chip_id_inv = doc_register_readw(docg3, DOC_CHIPID_INV); + + ret = -ENODEV; + if (chip_id != (u16)(~chip_id_inv)) { + doc_info("No device found at IO addr %p\n", + (void *)ress->start); + goto nochipfound; + } + + switch (chip_id) { + case DOC_CHIPID_G3: + doc_info("Found a G3 DiskOnChip at addr %p\n", + (void *)ress->start); + break; + default: + doc_err("Chip id %04x is not a DiskOnChip G3 chip\n", chip_id); + goto nochipfound; + } + + doc_set_driver_info(chip_id, mtd); + platform_set_drvdata(pdev, mtd); + + ret = -ENOMEM; + bbt_nbpages = DIV_ROUND_UP(docg3->max_block + 1, + 8 * DOC_LAYOUT_PAGE_SIZE); + docg3->bbt = kzalloc(bbt_nbpages * DOC_LAYOUT_PAGE_SIZE, GFP_KERNEL); + if (!docg3->bbt) + goto nochipfound; + doc_reload_bbt(docg3); + + ret = mtd_device_parse_register(mtd, part_probes, + NULL, NULL, 0); + if (ret) + goto register_error; + + doc_dbg_register(docg3); + return 0; + +register_error: + kfree(docg3->bbt); +nochipfound: + iounmap(docg3->base); +noress: + kfree(mtd); +nomem2: + kfree(docg3); +nomem1: + return ret; +} + +/** + * docg3_release - Release the driver + * @pdev: the platform device + * + * Returns 0 + */ +static int __exit docg3_release(struct platform_device *pdev) +{ + struct mtd_info *mtd = platform_get_drvdata(pdev); + struct docg3 *docg3 = mtd->priv; + + doc_dbg_unregister(docg3); + mtd_device_unregister(mtd); + iounmap(docg3->base); + kfree(docg3->bbt); + kfree(docg3); + kfree(mtd); + return 0; +} + +static struct platform_driver g3_driver = { + .driver = { + .name = "docg3", + .owner = THIS_MODULE, + }, + .remove = __exit_p(docg3_release), +}; + +static int __init docg3_init(void) +{ + return platform_driver_probe(&g3_driver, docg3_probe); +} +module_init(docg3_init); + + +static void __exit docg3_exit(void) +{ + platform_driver_unregister(&g3_driver); +} +module_exit(docg3_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Robert Jarzmik "); +MODULE_DESCRIPTION("MTD driver for DiskOnChip G3"); diff --git a/drivers/mtd/devices/docg3.h b/drivers/mtd/devices/docg3.h new file mode 100644 index 0000000..0d407be --- /dev/null +++ b/drivers/mtd/devices/docg3.h @@ -0,0 +1,297 @@ +/* + * Handles the M-Systems DiskOnChip G3 chip + * + * Copyright (C) 2011 Robert Jarzmik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _MTD_DOCG3_H +#define _MTD_DOCG3_H + +/* + * Flash memory areas : + * - 0x0000 .. 0x07ff : IPL + * - 0x0800 .. 0x0fff : Data area + * - 0x1000 .. 0x17ff : Registers + * - 0x1800 .. 0x1fff : Unknown + */ +#define DOC_IOSPACE_IPL 0x0000 +#define DOC_IOSPACE_DATA 0x0800 +#define DOC_IOSPACE_SIZE 0x2000 + +/* + * DOC G3 layout and adressing scheme + * A page address for the block "b", plane "P" and page "p": + * address = [bbbb bPpp pppp] + */ + +#define DOC_ADDR_PAGE_MASK 0x3f +#define DOC_ADDR_BLOCK_SHIFT 6 +#define DOC_LAYOUT_NBPLANES 2 +#define DOC_LAYOUT_PAGES_PER_BLOCK 64 +#define DOC_LAYOUT_PAGE_SIZE 512 +#define DOC_LAYOUT_OOB_SIZE 16 +#define DOC_LAYOUT_WEAR_SIZE 8 +#define DOC_LAYOUT_PAGE_OOB_SIZE \ + (DOC_LAYOUT_PAGE_SIZE + DOC_LAYOUT_OOB_SIZE) +#define DOC_LAYOUT_WEAR_OFFSET (DOC_LAYOUT_PAGE_OOB_SIZE * 2) +#define DOC_LAYOUT_BLOCK_SIZE \ + (DOC_LAYOUT_PAGES_PER_BLOCK * DOC_LAYOUT_PAGE_SIZE) +#define DOC_ECC_BCH_SIZE 7 +#define DOC_ECC_BCH_COVERED_BYTES \ + (DOC_LAYOUT_PAGE_SIZE + DOC_LAYOUT_OOB_PAGEINFO_SZ + \ + DOC_LAYOUT_OOB_HAMMING_SZ + DOC_LAYOUT_OOB_BCH_SZ) + +/* + * Blocks distribution + */ +#define DOC_LAYOUT_BLOCK_BBT 0 +#define DOC_LAYOUT_BLOCK_OTP 0 +#define DOC_LAYOUT_BLOCK_FIRST_DATA 6 + +#define DOC_LAYOUT_PAGE_BBT 4 + +/* + * Extra page OOB (16 bytes wide) layout + */ +#define DOC_LAYOUT_OOB_PAGEINFO_OFS 0 +#define DOC_LAYOUT_OOB_HAMMING_OFS 7 +#define DOC_LAYOUT_OOB_BCH_OFS 8 +#define DOC_LAYOUT_OOB_UNUSED_OFS 15 +#define DOC_LAYOUT_OOB_PAGEINFO_SZ 7 +#define DOC_LAYOUT_OOB_HAMMING_SZ 1 +#define DOC_LAYOUT_OOB_BCH_SZ 7 +#define DOC_LAYOUT_OOB_UNUSED_SZ 1 + + +#define DOC_CHIPID_G3 0x200 +#define DOC_ERASE_MARK 0xaa +/* + * Flash registers + */ +#define DOC_CHIPID 0x1000 +#define DOC_TEST 0x1004 +#define DOC_BUSLOCK 0x1006 +#define DOC_ENDIANCONTROL 0x1008 +#define DOC_DEVICESELECT 0x100a +#define DOC_ASICMODE 0x100c +#define DOC_CONFIGURATION 0x100e +#define DOC_INTERRUPTCONTROL 0x1010 +#define DOC_READADDRESS 0x101a +#define DOC_DATAEND 0x101e +#define DOC_INTERRUPTSTATUS 0x1020 + +#define DOC_FLASHSEQUENCE 0x1032 +#define DOC_FLASHCOMMAND 0x1034 +#define DOC_FLASHADDRESS 0x1036 +#define DOC_FLASHCONTROL 0x1038 +#define DOC_NOP 0x103e + +#define DOC_ECCCONF0 0x1040 +#define DOC_ECCCONF1 0x1042 +#define DOC_ECCPRESET 0x1044 +#define DOC_HAMMINGPARITY 0x1046 +#define DOC_BCH_SYNDROM(idx) (0x1048 + (idx << 1)) + +#define DOC_PROTECTION 0x1056 +#define DOC_DPS0_ADDRLOW 0x1060 +#define DOC_DPS0_ADDRHIGH 0x1062 +#define DOC_DPS1_ADDRLOW 0x1064 +#define DOC_DPS1_ADDRHIGH 0x1066 +#define DOC_DPS0_STATUS 0x106c +#define DOC_DPS1_STATUS 0x106e + +#define DOC_ASICMODECONFIRM 0x1072 +#define DOC_CHIPID_INV 0x1074 + +/* + * Flash sequences + * A sequence is preset before one or more commands are input to the chip. + */ +#define DOC_SEQ_RESET 0x00 +#define DOC_SEQ_PAGE_SIZE_532 0x03 +#define DOC_SEQ_SET_MODE 0x09 +#define DOC_SEQ_READ 0x12 +#define DOC_SEQ_SET_PLANE1 0x0e +#define DOC_SEQ_SET_PLANE2 0x10 +#define DOC_SEQ_PAGE_SETUP 0x1d + +/* + * Flash commands + */ +#define DOC_CMD_READ_PLANE1 0x00 +#define DOC_CMD_SET_ADDR_READ 0x05 +#define DOC_CMD_READ_ALL_PLANES 0x30 +#define DOC_CMD_READ_PLANE2 0x50 +#define DOC_CMD_READ_FLASH 0xe0 +#define DOC_CMD_PAGE_SIZE_532 0x3c + +#define DOC_CMD_PROG_BLOCK_ADDR 0x60 +#define DOC_CMD_PROG_CYCLE1 0x80 +#define DOC_CMD_PROG_CYCLE2 0x10 +#define DOC_CMD_ERASECYCLE2 0xd0 + +#define DOC_CMD_RELIABLE_MODE 0x22 +#define DOC_CMD_FAST_MODE 0xa2 + +#define DOC_CMD_RESET 0xff + +/* + * Flash register : DOC_FLASHCONTROL + */ +#define DOC_CTRL_VIOLATION 0x20 +#define DOC_CTRL_CE 0x10 +#define DOC_CTRL_UNKNOWN_BITS 0x08 +#define DOC_CTRL_PROTECTION_ERROR 0x04 +#define DOC_CTRL_SEQUENCE_ERROR 0x02 +#define DOC_CTRL_FLASHREADY 0x01 + +/* + * Flash register : DOC_ASICMODE + */ +#define DOC_ASICMODE_RESET 0x00 +#define DOC_ASICMODE_NORMAL 0x01 +#define DOC_ASICMODE_POWERDOWN 0x02 +#define DOC_ASICMODE_MDWREN 0x04 +#define DOC_ASICMODE_BDETCT_RESET 0x08 +#define DOC_ASICMODE_RSTIN_RESET 0x10 +#define DOC_ASICMODE_RAM_WE 0x20 + +/* + * Flash register : DOC_ECCCONF0 + */ +#define DOC_ECCCONF0_READ_MODE 0x8000 +#define DOC_ECCCONF0_AUTO_ECC_ENABLE 0x4000 +#define DOC_ECCCONF0_HAMMING_ENABLE 0x1000 +#define DOC_ECCCONF0_BCH_ENABLE 0x0800 +#define DOC_ECCCONF0_DATA_BYTES_MASK 0x07ff + +/* + * Flash register : DOC_ECCCONF1 + */ +#define DOC_ECCCONF1_BCH_SYNDROM_ERR 0x80 +#define DOC_ECCCONF1_UNKOWN1 0x40 +#define DOC_ECCCONF1_UNKOWN2 0x20 +#define DOC_ECCCONF1_UNKOWN3 0x10 +#define DOC_ECCCONF1_HAMMING_BITS_MASK 0x0f + +/* + * Flash register : DOC_PROTECTION + */ +#define DOC_PROTECT_FOUNDRY_OTP_LOCK 0x01 +#define DOC_PROTECT_CUSTOMER_OTP_LOCK 0x02 +#define DOC_PROTECT_LOCK_INPUT 0x04 +#define DOC_PROTECT_STICKY_LOCK 0x08 +#define DOC_PROTECT_PROTECTION_ENABLED 0x10 +#define DOC_PROTECT_IPL_DOWNLOAD_LOCK 0x20 +#define DOC_PROTECT_PROTECTION_ERROR 0x80 + +/* + * Flash register : DOC_DPS0_STATUS and DOC_DPS1_STATUS + */ +#define DOC_DPS_OTP_PROTECTED 0x01 +#define DOC_DPS_READ_PROTECTED 0x02 +#define DOC_DPS_WRITE_PROTECTED 0x04 +#define DOC_DPS_HW_LOCK_ENABLED 0x08 +#define DOC_DPS_KEY_OK 0x80 + +/* + * Flash register : DOC_CONFIGURATION + */ +#define DOC_CONF_IF_CFG 0x80 +#define DOC_CONF_MAX_ID_MASK 0x30 +#define DOC_CONF_VCCQ_3V 0x01 + +/* + * Flash register : DOC_READADDRESS + */ +#define DOC_READADDR_INC 0x8000 +#define DOC_READADDR_ONE_BYTE 0x4000 +#define DOC_READADDR_ADDR_MASK 0x1fff + +/** + * struct docg3 - DiskOnChip driver private data + * @dev: the device currently under control + * @base: mapped IO space + * @device_id: number of the cascaded DoCG3 device (0, 1, 2 or 3) + * @if_cfg: if true, reads are on 16bits, else reads are on 8bits + * @bbt: bad block table cache + * @debugfs_root: debugfs root node + */ +struct docg3 { + struct device *dev; + void __iomem *base; + unsigned int device_id:4; + unsigned int if_cfg:1; + int max_block; + u8 *bbt; + struct dentry *debugfs_root; +}; + +#define doc_err(fmt, arg...) dev_err(docg3->dev, (fmt), ## arg) +#define doc_info(fmt, arg...) dev_info(docg3->dev, (fmt), ## arg) +#define doc_dbg(fmt, arg...) dev_dbg(docg3->dev, (fmt), ## arg) +#define doc_vdbg(fmt, arg...) dev_vdbg(docg3->dev, (fmt), ## arg) + +#define DEBUGFS_RO_ATTR(name, show_fct) \ + static int name##_open(struct inode *inode, struct file *file) \ + { return single_open(file, show_fct, inode->i_private); } \ + static const struct file_operations name##_fops = { \ + .owner = THIS_MODULE, \ + .open = name##_open, \ + .llseek = seq_lseek, \ + .read = seq_read, \ + .release = single_release \ + }; +#endif + +/* + * Trace events part + */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM docg3 + +#if !defined(_MTD_DOCG3_TRACE) || defined(TRACE_HEADER_MULTI_READ) +#define _MTD_DOCG3_TRACE + +#include + +TRACE_EVENT(docg3_io, + TP_PROTO(int op, int width, u16 reg, int val), + TP_ARGS(op, width, reg, val), + TP_STRUCT__entry( + __field(int, op) + __field(unsigned char, width) + __field(u16, reg) + __field(int, val)), + TP_fast_assign( + __entry->op = op; + __entry->width = width; + __entry->reg = reg; + __entry->val = val;), + TP_printk("docg3: %s%02d reg=%04x, val=%04x", + __entry->op ? "write" : "read", __entry->width, + __entry->reg, __entry->val) + ); +#endif + +/* This part must be outside protection */ +#undef TRACE_INCLUDE_PATH +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_PATH . +#define TRACE_INCLUDE_FILE docg3 +#include -- cgit v0.10.2 From 57468a646e513bd88aeaa322eee2a8a960df91fc Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sat, 1 Oct 2011 22:03:46 +0200 Subject: mtd: nand_h1900 never worked This driver has been broken through all of git history and cannot even be built. Better mark it as broken. Next stop is removing from the tree. Signed-off-by: Arnd Bergmann Acked-by: Eric Miao Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 42b7b86..22db2b9 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -85,7 +85,7 @@ config MTD_NAND_DENALI_SCRATCH_REG_ADDR config MTD_NAND_H1900 tristate "iPAQ H1900 flash" - depends on ARCH_PXA + depends on ARCH_PXA && BROKEN help This enables the driver for the iPAQ h1900 flash. -- cgit v0.10.2 From 5f949137952020214cd167093dd7be448f21c079 Mon Sep 17 00:00:00 2001 From: Shaohui Xie Date: Fri, 14 Oct 2011 15:49:00 +0800 Subject: mtd: m25p80: don't probe device which has status of 'disabled' On some platforms such as P3060QDS, has multiple spi flashes, but they are not available at same time, so if their status is 'disabled', which is set by u-boot, will not be probed. Signed-off-by: Shaohui Xie Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 02aecac..884904d 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -823,6 +824,11 @@ static int __devinit m25p_probe(struct spi_device *spi) unsigned i; struct mtd_part_parser_data ppdata; +#ifdef CONFIG_MTD_OF_PARTS + if (!of_device_is_available(spi->dev.of_node)) + return -ENODEV; +#endif + /* Platform data helps sort out which chip type we have, as * well as how this board partitions it. If we don't have * a chip ID, try the JEDEC id commands; they'll work for most -- cgit v0.10.2 From d5de1907d0af22e1a02de2b16a624148517a39c2 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Fri, 14 Oct 2011 07:33:20 -0700 Subject: mtd: provide an alias for the redboot module name parse_mtd_partitions takes a list of partition types; if the driver isn't loaded, it attempts to load it, and then it grabs the partition parser. For redboot, the module name is "redboot.ko", while the parser name is "RedBoot". Since modprobe is case-sensitive, attempting to modprobe "RedBoot" will never work. I suspect the embedded systems that make use of redboot just always manually loaded redboot prior to loading their specific nand chip drivers (or statically compiled it in). Signed-off-by: Andres Salomon Signed-off-by: Artem Bityutskiy Cc: stable@kernel.org diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c index 56e48ea..f40ba86 100644 --- a/drivers/mtd/redboot.c +++ b/drivers/mtd/redboot.c @@ -296,6 +296,9 @@ static struct mtd_part_parser redboot_parser = { .name = "RedBoot", }; +/* mtd parsers will request the module by parser name */ +MODULE_ALIAS("RedBoot"); + static int __init redboot_parser_init(void) { return register_mtd_parser(&redboot_parser); -- cgit v0.10.2 From 23b1a99b87f3fc9e4242b98b2af3c9bed210f048 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Fri, 14 Oct 2011 20:09:33 -0700 Subject: mtd: nand: initialize ops.mode Our `ops' information was converted to a local variable recently, and apparently, old code relied on the fact that the global version was often left in a valid mode. We can't make this assumption on local structs, and we shouldn't be relying on a previous state anyway. Instead, we initialize mode to 0 for don't-care situations (i.e., the operation does not use OOB anyway) and MTD_OPS_PLACE_OOB when we want to place OOB data. This fixes a bug with nand_default_block_markbad(), where we catch on the BUG() call in nand_fill_oob(): Kernel bug detected[#1]: ... Call Trace: [<80307350>] nand_fill_oob.clone.5+0xa4/0x15c [<803075d8>] nand_do_write_oob+0x1d0/0x260 [<803077c4>] nand_default_block_markbad+0x15c/0x1a8 [<802e8c2c>] part_block_markbad+0x80/0x98 [<802ebc74>] mtd_ioctl+0x6d8/0xbd0 [<802ec1a4>] mtd_unlocked_ioctl+0x38/0x5c [<800d9c60>] do_vfs_ioctl+0xa4/0x6e4 [<800da2e4>] sys_ioctl+0x44/0xa0 [<8001381c>] stack_done+0x20/0x40 Signed-off-by: Brian Norris Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 51653d9..3ed9c5e 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -420,6 +420,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) ops.datbuf = NULL; ops.oobbuf = buf; ops.ooboffs = chip->badblockpos & ~0x01; + ops.mode = MTD_OPS_PLACE_OOB; do { ret = nand_do_write_oob(mtd, ofs, &ops); @@ -1596,6 +1597,7 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len, ops.len = len; ops.datbuf = buf; ops.oobbuf = NULL; + ops.mode = 0; ret = nand_do_read_ops(mtd, from, &ops); @@ -2306,6 +2308,7 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len, ops.len = len; ops.datbuf = (uint8_t *)buf; ops.oobbuf = NULL; + ops.mode = 0; ret = nand_do_write_ops(mtd, to, &ops); @@ -2341,6 +2344,7 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len, ops.len = len; ops.datbuf = (uint8_t *)buf; ops.oobbuf = NULL; + ops.mode = 0; ret = nand_do_write_ops(mtd, to, &ops); -- cgit v0.10.2 From 92abc475d8de1c29373f6d96ed63d8ecaa199d25 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Sun, 16 Oct 2011 18:15:16 -0700 Subject: jffs2: implement mount option parsing and compression overriding Currently jffs2 has compile-time constants (and .config options) controlling whether or not the various compression/decompression drivers are built in and enabled. This is fine for embedded systems, but it clashes with distribution kernels. Distro kernels tend to turn on everything; this causes OpenFirmware to fall over, as it understands ZLIB-compressed inodes. Booting a kernel that has LZO compression enabled, writing to the boot partition, and then rebooting causes OFW to fail to read the kernel from the filesystem. This is because LZO compression has priority when writing new data to jffs2, if LZO is enabled. This patch adds mount option parsing, and a single supported option ("compr=none"). This adds the flexibility of being able to specify which compressor overrides on a per-superblock basis. For now, we can simply disable compression; additional flexibility coming soon. v2: kill some printks, and implement show_options as suggested by Artem Bityutskiy. Signed-off-by: Andres Salomon Signed-off-by: Artem Bityutskiy diff --git a/fs/jffs2/compr.c b/fs/jffs2/compr.c index de42470..97bc74d 100644 --- a/fs/jffs2/compr.c +++ b/fs/jffs2/compr.c @@ -76,13 +76,18 @@ uint16_t jffs2_compress(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t *datalen, uint32_t *cdatalen) { int ret = JFFS2_COMPR_NONE; - int compr_ret; + int mode, compr_ret; struct jffs2_compressor *this, *best=NULL; unsigned char *output_buf = NULL, *tmp_buf; uint32_t orig_slen, orig_dlen; uint32_t best_slen=0, best_dlen=0; - switch (jffs2_compression_mode) { + if (c->mount_opts.override_compr) + mode = c->mount_opts.compr; + else + mode = jffs2_compression_mode; + + switch (mode) { case JFFS2_COMPR_MODE_NONE: break; case JFFS2_COMPR_MODE_PRIORITY: diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index bbcb975..5d54b4e 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -379,7 +379,7 @@ void jffs2_dirty_inode(struct inode *inode, int flags) jffs2_do_setattr(inode, &iattr); } -int jffs2_remount_fs (struct super_block *sb, int *flags, char *data) +int jffs2_do_remount_fs(struct super_block *sb, int *flags, char *data) { struct jffs2_sb_info *c = JFFS2_SB_INFO(sb); diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h index 0bc6a6c..55a0c1d 100644 --- a/fs/jffs2/jffs2_fs_sb.h +++ b/fs/jffs2/jffs2_fs_sb.h @@ -29,6 +29,11 @@ struct jffs2_inodirty; +struct jffs2_mount_opts { + bool override_compr; + unsigned int compr; +}; + /* A struct for the overall file system control. Pointers to jffs2_sb_info structs are named `c' in the source code. Nee jffs_control @@ -126,6 +131,7 @@ struct jffs2_sb_info { #endif struct jffs2_summary *summary; /* Summary information */ + struct jffs2_mount_opts mount_opts; #ifdef CONFIG_JFFS2_FS_XATTR #define XATTRINDEX_HASHSIZE (57) diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h index 6c1755c..ab65ee3 100644 --- a/fs/jffs2/os-linux.h +++ b/fs/jffs2/os-linux.h @@ -176,7 +176,7 @@ void jffs2_dirty_inode(struct inode *inode, int flags); struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode, struct jffs2_raw_inode *ri); int jffs2_statfs (struct dentry *, struct kstatfs *); -int jffs2_remount_fs (struct super_block *, int *, char *); +int jffs2_do_remount_fs(struct super_block *, int *, char *); int jffs2_do_fill_super(struct super_block *sb, void *data, int silent); void jffs2_gc_release_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f); diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c index 853b8e3..40f6e63 100644 --- a/fs/jffs2/super.c +++ b/fs/jffs2/super.c @@ -17,11 +17,13 @@ #include #include #include +#include #include #include #include #include #include +#include #include #include "compr.h" #include "nodelist.h" @@ -75,6 +77,29 @@ static void jffs2_write_super(struct super_block *sb) unlock_super(sb); } +static const char *jffs2_compr_name(unsigned int compr) +{ + switch (compr) { + case JFFS2_COMPR_MODE_NONE: + return "none"; + default: + /* should never happen; programmer error */ + WARN_ON(1); + return ""; + } +} + +static int jffs2_show_options(struct seq_file *s, struct vfsmount *mnt) +{ + struct jffs2_sb_info *c = JFFS2_SB_INFO(mnt->mnt_sb); + struct jffs2_mount_opts *opts = &c->mount_opts; + + if (opts->override_compr) + seq_printf(s, ",compr=%s", jffs2_compr_name(opts->compr)); + + return 0; +} + static int jffs2_sync_fs(struct super_block *sb, int wait) { struct jffs2_sb_info *c = JFFS2_SB_INFO(sb); @@ -133,6 +158,71 @@ static const struct export_operations jffs2_export_ops = { .fh_to_parent = jffs2_fh_to_parent, }; +/* + * JFFS2 mount options. + * + * Opt_override_compr: override default compressor + * Opt_err: just end of array marker + */ +enum { + Opt_override_compr, + Opt_err, +}; + +static const match_table_t tokens = { + {Opt_override_compr, "compr=%s"}, + {Opt_err, NULL}, +}; + +static int jffs2_parse_options(struct jffs2_sb_info *c, char *data) +{ + substring_t args[MAX_OPT_ARGS]; + char *p, *name; + + if (!data) + return 0; + + while ((p = strsep(&data, ","))) { + int token; + + if (!*p) + continue; + + token = match_token(p, tokens, args); + switch (token) { + case Opt_override_compr: + name = match_strdup(&args[0]); + + if (!name) + return -ENOMEM; + if (!strcmp(name, "none")) { + c->mount_opts.compr = JFFS2_COMPR_MODE_NONE; + c->mount_opts.override_compr = true; + } + kfree(name); + break; + default: + printk(KERN_ERR "JFFS2 Error: unrecognized mount option '%s' or missing value\n", + p); + return -EINVAL; + } + } + + return 0; +} + +static int jffs2_remount_fs(struct super_block *sb, int *flags, char *data) +{ + struct jffs2_sb_info *c = JFFS2_SB_INFO(sb); + int err; + + err = jffs2_parse_options(c, data); + if (err) + return -EINVAL; + + return jffs2_do_remount_fs(sb, flags, data); +} + static const struct super_operations jffs2_super_operations = { .alloc_inode = jffs2_alloc_inode, @@ -143,6 +233,7 @@ static const struct super_operations jffs2_super_operations = .remount_fs = jffs2_remount_fs, .evict_inode = jffs2_evict_inode, .dirty_inode = jffs2_dirty_inode, + .show_options = jffs2_show_options, .sync_fs = jffs2_sync_fs, }; @@ -166,6 +257,12 @@ static int jffs2_fill_super(struct super_block *sb, void *data, int silent) c->os_priv = sb; sb->s_fs_info = c; + ret = jffs2_parse_options(c, data); + if (ret) { + kfree(c); + return -EINVAL; + } + /* Initialize JFFS2 superblock locks, the further initialization will * be done later */ mutex_init(&c->alloc_sem); -- cgit v0.10.2 From 123005f3ccfa58637ad6e1a8b9f7f3f861ca65f4 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Sun, 16 Oct 2011 18:15:23 -0700 Subject: jffs2: add compr=lzo and compr=zlib options ..to allow forcing of either compression scheme. This will override compiled-in defaults. jffs2_compress is reworked a bit, as the lzo/zlib override shares lots of code w/ the PRIORITY mode. v2: update show_options accordingly. Signed-off-by: Andres Salomon Signed-off-by: Artem Bityutskiy diff --git a/fs/jffs2/compr.c b/fs/jffs2/compr.c index 97bc74d..5b6c9d1 100644 --- a/fs/jffs2/compr.c +++ b/fs/jffs2/compr.c @@ -53,6 +53,78 @@ static int jffs2_is_best_compression(struct jffs2_compressor *this, return 0; } +/* + * jffs2_selected_compress: + * @compr: Explicit compression type to use (ie, JFFS2_COMPR_ZLIB). + * If 0, just take the first available compression mode. + * @data_in: Pointer to uncompressed data + * @cpage_out: Pointer to returned pointer to buffer for compressed data + * @datalen: On entry, holds the amount of data available for compression. + * On exit, expected to hold the amount of data actually compressed. + * @cdatalen: On entry, holds the amount of space available for compressed + * data. On exit, expected to hold the actual size of the compressed + * data. + * + * Returns: the compression type used. Zero is used to show that the data + * could not be compressed; probably because we couldn't find the requested + * compression mode. + */ +static int jffs2_selected_compress(u8 compr, unsigned char *data_in, + unsigned char **cpage_out, u32 *datalen, u32 *cdatalen) +{ + struct jffs2_compressor *this; + int err, ret = JFFS2_COMPR_NONE; + uint32_t orig_slen, orig_dlen; + char *output_buf; + + output_buf = kmalloc(*cdatalen, GFP_KERNEL); + if (!output_buf) { + printk(KERN_WARNING "JFFS2: No memory for compressor allocation. Compression failed.\n"); + return ret; + } + orig_slen = *datalen; + orig_dlen = *cdatalen; + spin_lock(&jffs2_compressor_list_lock); + list_for_each_entry(this, &jffs2_compressor_list, list) { + /* Skip decompress-only and disabled modules */ + if (!this->compress || this->disabled) + continue; + + /* Skip if not the desired compression type */ + if (compr && (compr != this->compr)) + continue; + + /* + * Either compression type was unspecified, or we found our + * compressor; either way, we're good to go. + */ + this->usecount++; + spin_unlock(&jffs2_compressor_list_lock); + + *datalen = orig_slen; + *cdatalen = orig_dlen; + err = this->compress(data_in, output_buf, datalen, cdatalen); + + spin_lock(&jffs2_compressor_list_lock); + this->usecount--; + if (!err) { + /* Success */ + ret = this->compr; + this->stat_compr_blocks++; + this->stat_compr_orig_size += *datalen; + this->stat_compr_new_size += *cdatalen; + break; + } + } + spin_unlock(&jffs2_compressor_list_lock); + if (ret == JFFS2_COMPR_NONE) + kfree(output_buf); + else + *cpage_out = output_buf; + + return ret; +} + /* jffs2_compress: * @data_in: Pointer to uncompressed data * @cpage_out: Pointer to returned pointer to buffer for compressed data @@ -91,37 +163,8 @@ uint16_t jffs2_compress(struct jffs2_sb_info *c, struct jffs2_inode_info *f, case JFFS2_COMPR_MODE_NONE: break; case JFFS2_COMPR_MODE_PRIORITY: - output_buf = kmalloc(*cdatalen,GFP_KERNEL); - if (!output_buf) { - printk(KERN_WARNING "JFFS2: No memory for compressor allocation. Compression failed.\n"); - goto out; - } - orig_slen = *datalen; - orig_dlen = *cdatalen; - spin_lock(&jffs2_compressor_list_lock); - list_for_each_entry(this, &jffs2_compressor_list, list) { - /* Skip decompress-only backwards-compatibility and disabled modules */ - if ((!this->compress)||(this->disabled)) - continue; - - this->usecount++; - spin_unlock(&jffs2_compressor_list_lock); - *datalen = orig_slen; - *cdatalen = orig_dlen; - compr_ret = this->compress(data_in, output_buf, datalen, cdatalen); - spin_lock(&jffs2_compressor_list_lock); - this->usecount--; - if (!compr_ret) { - ret = this->compr; - this->stat_compr_blocks++; - this->stat_compr_orig_size += *datalen; - this->stat_compr_new_size += *cdatalen; - break; - } - } - spin_unlock(&jffs2_compressor_list_lock); - if (ret == JFFS2_COMPR_NONE) - kfree(output_buf); + ret = jffs2_selected_compress(0, data_in, cpage_out, datalen, + cdatalen); break; case JFFS2_COMPR_MODE_SIZE: case JFFS2_COMPR_MODE_FAVOURLZO: @@ -179,22 +222,28 @@ uint16_t jffs2_compress(struct jffs2_sb_info *c, struct jffs2_inode_info *f, best->stat_compr_orig_size += best_slen; best->stat_compr_new_size += best_dlen; ret = best->compr; + *cpage_out = output_buf; } spin_unlock(&jffs2_compressor_list_lock); break; + case JFFS2_COMPR_MODE_FORCELZO: + ret = jffs2_selected_compress(JFFS2_COMPR_LZO, data_in, + cpage_out, datalen, cdatalen); + break; + case JFFS2_COMPR_MODE_FORCEZLIB: + ret = jffs2_selected_compress(JFFS2_COMPR_ZLIB, data_in, + cpage_out, datalen, cdatalen); + break; default: printk(KERN_ERR "JFFS2: unknown compression mode.\n"); } - out: + if (ret == JFFS2_COMPR_NONE) { *cpage_out = data_in; *datalen = *cdatalen; none_stat_compr_blocks++; none_stat_compr_size += *datalen; } - else { - *cpage_out = output_buf; - } return ret; } diff --git a/fs/jffs2/compr.h b/fs/jffs2/compr.h index 13bb759..5e91d57 100644 --- a/fs/jffs2/compr.h +++ b/fs/jffs2/compr.h @@ -40,6 +40,8 @@ #define JFFS2_COMPR_MODE_PRIORITY 1 #define JFFS2_COMPR_MODE_SIZE 2 #define JFFS2_COMPR_MODE_FAVOURLZO 3 +#define JFFS2_COMPR_MODE_FORCELZO 4 +#define JFFS2_COMPR_MODE_FORCEZLIB 5 #define FAVOUR_LZO_PERCENT 80 diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c index 40f6e63..e7e9744 100644 --- a/fs/jffs2/super.c +++ b/fs/jffs2/super.c @@ -82,6 +82,14 @@ static const char *jffs2_compr_name(unsigned int compr) switch (compr) { case JFFS2_COMPR_MODE_NONE: return "none"; +#ifdef CONFIG_JFFS2_LZO + case JFFS2_COMPR_MODE_FORCELZO: + return "lzo"; +#endif +#ifdef CONFIG_JFFS2_ZLIB + case JFFS2_COMPR_MODE_FORCEZLIB: + return "zlib"; +#endif default: /* should never happen; programmer error */ WARN_ON(1); @@ -195,11 +203,25 @@ static int jffs2_parse_options(struct jffs2_sb_info *c, char *data) if (!name) return -ENOMEM; - if (!strcmp(name, "none")) { + if (!strcmp(name, "none")) c->mount_opts.compr = JFFS2_COMPR_MODE_NONE; - c->mount_opts.override_compr = true; +#ifdef CONFIG_JFFS2_LZO + else if (!strcmp(name, "lzo")) + c->mount_opts.compr = JFFS2_COMPR_MODE_FORCELZO; +#endif +#ifdef CONFIG_JFFS2_ZLIB + else if (!strcmp(name, "zlib")) + c->mount_opts.compr = + JFFS2_COMPR_MODE_FORCEZLIB; +#endif + else { + printk(KERN_ERR "JFFS2 Error: unknown compressor \"%s\"", + name); + kfree(name); + return -EINVAL; } kfree(name); + c->mount_opts.override_compr = true; break; default: printk(KERN_ERR "JFFS2 Error: unrecognized mount option '%s' or missing value\n", -- cgit v0.10.2 From 6be55f79a216ccb9f364476b12e5b151a5f6bdb6 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 25 Oct 2011 11:00:07 +0200 Subject: mtd: clean up usage of MTD_DOCPROBE_ADDRESS Depending on whether MTD_DOCPROBE_ADVANCED is set or not, MTD_DOCPROBE_ADDRESS will default to either 0x0000 or 0. That should lead to (basically) identical code in docprobe.c. The current two defaults should be merged. And, while we're at it, if MTD_DOCPROBE is set MTD_DOCPROBE_ADDRESS will always be set. (MTD_DOCPROBE_ADDRESS depends on MTD_DOCPROBE and it has a default value.) So the check whether CONFIG_MTD_DOCPROBE_ADDRESS is defined is unnecessary and should be dropped. Signed-off-by: Paul Bolle Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig index 6d91a1f..283d887 100644 --- a/drivers/mtd/devices/Kconfig +++ b/drivers/mtd/devices/Kconfig @@ -278,8 +278,7 @@ config MTD_DOCPROBE_ADVANCED config MTD_DOCPROBE_ADDRESS hex "Physical address of DiskOnChip" if MTD_DOCPROBE_ADVANCED depends on MTD_DOCPROBE - default "0x0000" if MTD_DOCPROBE_ADVANCED - default "0" if !MTD_DOCPROBE_ADVANCED + default "0x0" ---help--- By default, the probe for DiskOnChip devices will look for a DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000. diff --git a/drivers/mtd/devices/docprobe.c b/drivers/mtd/devices/docprobe.c index d374603..45116bb 100644 --- a/drivers/mtd/devices/docprobe.c +++ b/drivers/mtd/devices/docprobe.c @@ -50,11 +50,6 @@ #include #include -/* Where to look for the devices? */ -#ifndef CONFIG_MTD_DOCPROBE_ADDRESS -#define CONFIG_MTD_DOCPROBE_ADDRESS 0 -#endif - static unsigned long doc_config_location = CONFIG_MTD_DOCPROBE_ADDRESS; module_param(doc_config_location, ulong, 0); -- cgit v0.10.2 From 7406060e292c389fe6f38bd23493de9b57f2f4fc Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Sun, 30 Oct 2011 00:11:53 +0200 Subject: mtd: tests: don't use mtd0 as a default mtd tests may erase the mtd device, so force the user to specify which mtd device to test by using the module parameter. Disable the default (using mtd0) since this may destroy a vital part of the flash if the module is inserted accidently or carelessly. Reported-by: Roland Kletzing Signed-off-by: Wolfram Sang Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/tests/mtd_oobtest.c b/drivers/mtd/tests/mtd_oobtest.c index 6bcff42..933f7e5 100644 --- a/drivers/mtd/tests/mtd_oobtest.c +++ b/drivers/mtd/tests/mtd_oobtest.c @@ -30,7 +30,7 @@ #define PRINT_PREF KERN_INFO "mtd_oobtest: " -static int dev; +static int dev = -EINVAL; module_param(dev, int, S_IRUGO); MODULE_PARM_DESC(dev, "MTD device number to use"); @@ -366,6 +366,13 @@ static int __init mtd_oobtest_init(void) printk(KERN_INFO "\n"); printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + printk(PRINT_PREF "Please specify a valid mtd-device via module paramter\n"); + printk(KERN_CRIT "CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + printk(PRINT_PREF "MTD device: %d\n", dev); mtd = get_mtd_device(NULL, dev); diff --git a/drivers/mtd/tests/mtd_pagetest.c b/drivers/mtd/tests/mtd_pagetest.c index 186b14c..afafb69 100644 --- a/drivers/mtd/tests/mtd_pagetest.c +++ b/drivers/mtd/tests/mtd_pagetest.c @@ -30,7 +30,7 @@ #define PRINT_PREF KERN_INFO "mtd_pagetest: " -static int dev; +static int dev = -EINVAL; module_param(dev, int, S_IRUGO); MODULE_PARM_DESC(dev, "MTD device number to use"); @@ -504,6 +504,13 @@ static int __init mtd_pagetest_init(void) printk(KERN_INFO "\n"); printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + printk(PRINT_PREF "Please specify a valid mtd-device via module paramter\n"); + printk(KERN_CRIT "CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + printk(PRINT_PREF "MTD device: %d\n", dev); mtd = get_mtd_device(NULL, dev); diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c index 7560453..550fe51 100644 --- a/drivers/mtd/tests/mtd_readtest.c +++ b/drivers/mtd/tests/mtd_readtest.c @@ -29,7 +29,7 @@ #define PRINT_PREF KERN_INFO "mtd_readtest: " -static int dev; +static int dev = -EINVAL; module_param(dev, int, S_IRUGO); MODULE_PARM_DESC(dev, "MTD device number to use"); @@ -170,6 +170,12 @@ static int __init mtd_readtest_init(void) printk(KERN_INFO "\n"); printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + printk(PRINT_PREF "Please specify a valid mtd-device via module paramter\n"); + return -EINVAL; + } + printk(PRINT_PREF "MTD device: %d\n", dev); mtd = get_mtd_device(NULL, dev); diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c index 79d53ee..493b367 100644 --- a/drivers/mtd/tests/mtd_speedtest.c +++ b/drivers/mtd/tests/mtd_speedtest.c @@ -29,7 +29,7 @@ #define PRINT_PREF KERN_INFO "mtd_speedtest: " -static int dev; +static int dev = -EINVAL; module_param(dev, int, S_IRUGO); MODULE_PARM_DESC(dev, "MTD device number to use"); @@ -361,6 +361,13 @@ static int __init mtd_speedtest_init(void) printk(KERN_INFO "\n"); printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + printk(PRINT_PREF "Please specify a valid mtd-device via module paramter\n"); + printk(KERN_CRIT "CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + if (count) printk(PRINT_PREF "MTD device: %d count: %d\n", dev, count); else diff --git a/drivers/mtd/tests/mtd_stresstest.c b/drivers/mtd/tests/mtd_stresstest.c index 3c9008a..52ffd91 100644 --- a/drivers/mtd/tests/mtd_stresstest.c +++ b/drivers/mtd/tests/mtd_stresstest.c @@ -30,7 +30,7 @@ #define PRINT_PREF KERN_INFO "mtd_stresstest: " -static int dev; +static int dev = -EINVAL; module_param(dev, int, S_IRUGO); MODULE_PARM_DESC(dev, "MTD device number to use"); @@ -250,6 +250,13 @@ static int __init mtd_stresstest_init(void) printk(KERN_INFO "\n"); printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + printk(PRINT_PREF "Please specify a valid mtd-device via module paramter\n"); + printk(KERN_CRIT "CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + printk(PRINT_PREF "MTD device: %d\n", dev); mtd = get_mtd_device(NULL, dev); diff --git a/drivers/mtd/tests/mtd_subpagetest.c b/drivers/mtd/tests/mtd_subpagetest.c index 2b51842..1a05bfa 100644 --- a/drivers/mtd/tests/mtd_subpagetest.c +++ b/drivers/mtd/tests/mtd_subpagetest.c @@ -29,7 +29,7 @@ #define PRINT_PREF KERN_INFO "mtd_subpagetest: " -static int dev; +static int dev = -EINVAL; module_param(dev, int, S_IRUGO); MODULE_PARM_DESC(dev, "MTD device number to use"); @@ -379,6 +379,13 @@ static int __init mtd_subpagetest_init(void) printk(KERN_INFO "\n"); printk(KERN_INFO "=================================================\n"); + + if (dev < 0) { + printk(PRINT_PREF "Please specify a valid mtd-device via module paramter\n"); + printk(KERN_CRIT "CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + printk(PRINT_PREF "MTD device: %d\n", dev); mtd = get_mtd_device(NULL, dev); diff --git a/drivers/mtd/tests/mtd_torturetest.c b/drivers/mtd/tests/mtd_torturetest.c index 25786ce..03ab649 100644 --- a/drivers/mtd/tests/mtd_torturetest.c +++ b/drivers/mtd/tests/mtd_torturetest.c @@ -46,7 +46,7 @@ static int pgcnt; module_param(pgcnt, int, S_IRUGO); MODULE_PARM_DESC(pgcnt, "number of pages per eraseblock to torture (0 => all)"); -static int dev; +static int dev = -EINVAL; module_param(dev, int, S_IRUGO); MODULE_PARM_DESC(dev, "MTD device number to use"); @@ -213,6 +213,13 @@ static int __init tort_init(void) printk(KERN_INFO "=================================================\n"); printk(PRINT_PREF "Warning: this program is trying to wear out your " "flash, stop it if this is not wanted.\n"); + + if (dev < 0) { + printk(PRINT_PREF "Please specify a valid mtd-device via module paramter\n"); + printk(KERN_CRIT "CAREFUL: This test wipes all data on the specified MTD device!\n"); + return -EINVAL; + } + printk(PRINT_PREF "MTD device: %d\n", dev); printk(PRINT_PREF "torture %d eraseblocks (%d-%d) of mtd%d\n", ebcnt, eb, eb + ebcnt - 1, dev); -- cgit v0.10.2 From 48e546b7f281f251893baa40769581fd15f085fb Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Sun, 30 Oct 2011 17:28:49 +0100 Subject: mtd: tests: annotate as DANGEROUS in Kconfig The tests may erase mtd devices, so annotate them as suggested per coding style and add a paragraph to the help text as well. Artem: amended the help test a bit. Signed-off-by: Wolfram Sang Signed-off-by: Artem Bityutskiy diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 4925aa9..82c202b 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -13,13 +13,16 @@ menuconfig MTD if MTD config MTD_TESTS - tristate "MTD tests support" + tristate "MTD tests support (DANGEROUS)" depends on m help This option includes various MTD tests into compilation. The tests should normally be compiled as kernel modules. The modules perform various checks and verifications when loaded. + WARNING: some of the tests will ERASE entire MTD device which they + test. Do not use these tests unless you really know what you do. + config MTD_REDBOOT_PARTS tristate "RedBoot partition table parsing" ---help--- -- cgit v0.10.2