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Diffstat (limited to 'drivers/mtd/chips')
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0001.c87
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0002.c112
-rw-r--r--drivers/mtd/chips/jedec_probe.c14
3 files changed, 169 insertions, 44 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 39edb82..7ea49a0 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -908,7 +908,7 @@ static void __xipram xip_enable(struct map_info *map, struct flchip *chip,
static int __xipram xip_wait_for_operation(
struct map_info *map, struct flchip *chip,
- unsigned long adr, int *chip_op_time )
+ unsigned long adr, unsigned int chip_op_time )
{
struct cfi_private *cfi = map->fldrv_priv;
struct cfi_pri_intelext *cfip = cfi->cmdset_priv;
@@ -917,7 +917,7 @@ static int __xipram xip_wait_for_operation(
flstate_t oldstate, newstate;
start = xip_currtime();
- usec = *chip_op_time * 8;
+ usec = chip_op_time * 8;
if (usec == 0)
usec = 500000;
done = 0;
@@ -1027,8 +1027,8 @@ static int __xipram xip_wait_for_operation(
#define XIP_INVAL_CACHED_RANGE(map, from, size) \
INVALIDATE_CACHED_RANGE(map, from, size)
-#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, p_usec) \
- xip_wait_for_operation(map, chip, cmd_adr, p_usec)
+#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, usec) \
+ xip_wait_for_operation(map, chip, cmd_adr, usec)
#else
@@ -1040,64 +1040,64 @@ static int __xipram xip_wait_for_operation(
static int inval_cache_and_wait_for_operation(
struct map_info *map, struct flchip *chip,
unsigned long cmd_adr, unsigned long inval_adr, int inval_len,
- int *chip_op_time )
+ unsigned int chip_op_time)
{
struct cfi_private *cfi = map->fldrv_priv;
map_word status, status_OK = CMD(0x80);
- int z, chip_state = chip->state;
- unsigned long timeo;
+ int chip_state = chip->state;
+ unsigned int timeo, sleep_time;
spin_unlock(chip->mutex);
if (inval_len)
INVALIDATE_CACHED_RANGE(map, inval_adr, inval_len);
- if (*chip_op_time)
- cfi_udelay(*chip_op_time);
spin_lock(chip->mutex);
- timeo = *chip_op_time * 8 * HZ / 1000000;
- if (timeo < HZ/2)
- timeo = HZ/2;
- timeo += jiffies;
+ /* set our timeout to 8 times the expected delay */
+ timeo = chip_op_time * 8;
+ if (!timeo)
+ timeo = 500000;
+ sleep_time = chip_op_time / 2;
- z = 0;
for (;;) {
- if (chip->state != chip_state) {
- /* Someone's suspended the operation: sleep */
- DECLARE_WAITQUEUE(wait, current);
-
- set_current_state(TASK_UNINTERRUPTIBLE);
- add_wait_queue(&chip->wq, &wait);
- spin_unlock(chip->mutex);
- schedule();
- remove_wait_queue(&chip->wq, &wait);
- timeo = jiffies + (HZ / 2); /* FIXME */
- spin_lock(chip->mutex);
- continue;
- }
-
status = map_read(map, cmd_adr);
if (map_word_andequal(map, status, status_OK, status_OK))
break;
- /* OK Still waiting */
- if (time_after(jiffies, timeo)) {
+ if (!timeo) {
map_write(map, CMD(0x70), cmd_adr);
chip->state = FL_STATUS;
return -ETIME;
}
- /* Latency issues. Drop the lock, wait a while and retry */
- z++;
+ /* OK Still waiting. Drop the lock, wait a while and retry. */
spin_unlock(chip->mutex);
- cfi_udelay(1);
+ if (sleep_time >= 1000000/HZ) {
+ /*
+ * Half of the normal delay still remaining
+ * can be performed with a sleeping delay instead
+ * of busy waiting.
+ */
+ msleep(sleep_time/1000);
+ timeo -= sleep_time;
+ sleep_time = 1000000/HZ;
+ } else {
+ udelay(1);
+ cond_resched();
+ timeo--;
+ }
spin_lock(chip->mutex);
- }
- if (!z) {
- if (!--(*chip_op_time))
- *chip_op_time = 1;
- } else if (z > 1)
- ++(*chip_op_time);
+ if (chip->state != chip_state) {
+ /* Someone's suspended the operation: sleep */
+ DECLARE_WAITQUEUE(wait, current);
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ add_wait_queue(&chip->wq, &wait);
+ spin_unlock(chip->mutex);
+ schedule();
+ remove_wait_queue(&chip->wq, &wait);
+ spin_lock(chip->mutex);
+ }
+ }
/* Done and happy. */
chip->state = FL_STATUS;
@@ -1107,8 +1107,7 @@ static int inval_cache_and_wait_for_operation(
#endif
#define WAIT_TIMEOUT(map, chip, adr, udelay) \
- ({ int __udelay = (udelay); \
- INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, &__udelay); })
+ INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, udelay);
static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t adr, size_t len)
@@ -1332,7 +1331,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
adr, map_bankwidth(map),
- &chip->word_write_time);
+ chip->word_write_time);
if (ret) {
xip_enable(map, chip, adr);
printk(KERN_ERR "%s: word write error (status timeout)\n", map->name);
@@ -1569,7 +1568,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
ret = INVAL_CACHE_AND_WAIT(map, chip, cmd_adr,
adr, len,
- &chip->buffer_write_time);
+ chip->buffer_write_time);
if (ret) {
map_write(map, CMD(0x70), cmd_adr);
chip->state = FL_STATUS;
@@ -1704,7 +1703,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
adr, len,
- &chip->erase_time);
+ chip->erase_time);
if (ret) {
map_write(map, CMD(0x70), adr);
chip->state = FL_STATUS;
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 9885726..702ae4c 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -45,9 +45,11 @@
#define MAX_WORD_RETRIES 3
#define MANUFACTURER_AMD 0x0001
+#define MANUFACTURER_ATMEL 0x001F
#define MANUFACTURER_SST 0x00BF
#define SST49LF004B 0x0060
#define SST49LF008A 0x005a
+#define AT49BV6416 0x00d6
static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
@@ -68,6 +70,9 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
static void put_chip(struct map_info *map, struct flchip *chip, unsigned long adr);
#include "fwh_lock.h"
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+
static struct mtd_chip_driver cfi_amdstd_chipdrv = {
.probe = NULL, /* Not usable directly */
.destroy = cfi_amdstd_destroy,
@@ -161,6 +166,26 @@ static void fixup_use_write_buffers(struct mtd_info *mtd, void *param)
}
}
+/* Atmel chips don't use the same PRI format as AMD chips */
+static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
+{
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
+ struct cfi_pri_amdstd *extp = cfi->cmdset_priv;
+ struct cfi_pri_atmel atmel_pri;
+
+ memcpy(&atmel_pri, extp, sizeof(atmel_pri));
+ memset((char *)extp + 5, 0, sizeof(*extp) - 5);
+
+ if (atmel_pri.Features & 0x02)
+ extp->EraseSuspend = 2;
+
+ if (atmel_pri.BottomBoot)
+ extp->TopBottom = 2;
+ else
+ extp->TopBottom = 3;
+}
+
static void fixup_use_secsi(struct mtd_info *mtd, void *param)
{
/* Setup for chips with a secsi area */
@@ -179,6 +204,17 @@ static void fixup_use_erase_chip(struct mtd_info *mtd, void *param)
}
+/*
+ * Some Atmel chips (e.g. the AT49BV6416) power-up with all sectors
+ * locked by default.
+ */
+static void fixup_use_atmel_lock(struct mtd_info *mtd, void *param)
+{
+ mtd->lock = cfi_atmel_lock;
+ mtd->unlock = cfi_atmel_unlock;
+ mtd->flags |= MTD_STUPID_LOCK;
+}
+
static struct cfi_fixup cfi_fixup_table[] = {
#ifdef AMD_BOOTLOC_BUG
{ CFI_MFR_AMD, CFI_ID_ANY, fixup_amd_bootblock, NULL },
@@ -192,6 +228,7 @@ static struct cfi_fixup cfi_fixup_table[] = {
#if !FORCE_WORD_WRITE
{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, },
#endif
+ { CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
{ 0, 0, NULL, NULL }
};
static struct cfi_fixup jedec_fixup_table[] = {
@@ -207,6 +244,7 @@ static struct cfi_fixup fixup_table[] = {
* we know that is the case.
*/
{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_erase_chip, NULL },
+ { CFI_MFR_ATMEL, AT49BV6416, fixup_use_atmel_lock, NULL },
{ 0, 0, NULL, NULL }
};
@@ -1607,6 +1645,80 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr)
return 0;
}
+static int do_atmel_lock(struct map_info *map, struct flchip *chip,
+ unsigned long adr, int len, void *thunk)
+{
+ struct cfi_private *cfi = map->fldrv_priv;
+ int ret;
+
+ spin_lock(chip->mutex);
+ ret = get_chip(map, chip, adr + chip->start, FL_LOCKING);
+ if (ret)
+ goto out_unlock;
+ chip->state = FL_LOCKING;
+
+ DEBUG(MTD_DEBUG_LEVEL3, "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);
+ cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi,
+ cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x80, cfi->addr_unlock1, chip->start, map, cfi,
+ cfi->device_type, NULL);
+ cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi,
+ cfi->device_type, NULL);
+ cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi,
+ cfi->device_type, NULL);
+ map_write(map, CMD(0x40), chip->start + adr);
+
+ chip->state = FL_READY;
+ put_chip(map, chip, adr + chip->start);
+ ret = 0;
+
+out_unlock:
+ spin_unlock(chip->mutex);
+ return ret;
+}
+
+static int do_atmel_unlock(struct map_info *map, struct flchip *chip,
+ unsigned long adr, int len, void *thunk)
+{
+ struct cfi_private *cfi = map->fldrv_priv;
+ int ret;
+
+ spin_lock(chip->mutex);
+ ret = get_chip(map, chip, adr + chip->start, FL_UNLOCKING);
+ if (ret)
+ goto out_unlock;
+ chip->state = FL_UNLOCKING;
+
+ DEBUG(MTD_DEBUG_LEVEL3, "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);
+ map_write(map, CMD(0x70), adr);
+
+ chip->state = FL_READY;
+ put_chip(map, chip, adr + chip->start);
+ ret = 0;
+
+out_unlock:
+ spin_unlock(chip->mutex);
+ return ret;
+}
+
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+ return cfi_varsize_frob(mtd, do_atmel_lock, ofs, len, NULL);
+}
+
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+ return cfi_varsize_frob(mtd, do_atmel_unlock, ofs, len, NULL);
+}
+
static void cfi_amdstd_sync (struct mtd_info *mtd)
{
diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c
index 8f39d0a..1154dac 100644
--- a/drivers/mtd/chips/jedec_probe.c
+++ b/drivers/mtd/chips/jedec_probe.c
@@ -111,6 +111,7 @@
#define MX29LV040C 0x004F
#define MX29LV160T 0x22C4
#define MX29LV160B 0x2249
+#define MX29F040 0x00A4
#define MX29F016 0x00AD
#define MX29F002T 0x00B0
#define MX29F004T 0x0045
@@ -1172,6 +1173,19 @@ static const struct amd_flash_info jedec_table[] = {
}
}, {
.mfr_id = MANUFACTURER_MACRONIX,
+ .dev_id = MX29F040,
+ .name = "Macronix MX29F040",
+ .uaddr = {
+ [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
+ },
+ .DevSize = SIZE_512KiB,
+ .CmdSet = P_ID_AMD_STD,
+ .NumEraseRegions= 1,
+ .regions = {
+ ERASEINFO(0x10000,8),
+ }
+ }, {
+ .mfr_id = MANUFACTURER_MACRONIX,
.dev_id = MX29F016,
.name = "Macronix MX29F016",
.uaddr = {
generated by cgit v0.10.2 at 2024-07-28 23:53:41 (GMT)