Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 132 insertions, 60 deletions

diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c
index a3b9247..1e21a2c 100644
--- a/drivers/mtd/inftlcore.c
+++ b/drivers/mtd/inftlcore.c
@@ -36,6 +36,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nftl.h>
 #include <linux/mtd/inftl.h>
+#include <linux/mtd/nand.h>
 #include <asm/uaccess.h>
 #include <asm/errno.h>
 #include <asm/io.h>
@@ -79,14 +80,12 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 	inftl->mbd.devnum = -1;
 	inftl->mbd.blksize = 512;
 	inftl->mbd.tr = tr;
-	memcpy(&inftl->oobinfo, &mtd->oobinfo, sizeof(struct nand_oobinfo));
-	inftl->oobinfo.useecc = MTD_NANDECC_PLACEONLY;
 
-        if (INFTL_mount(inftl) < 0) {
+	if (INFTL_mount(inftl) < 0) {
 		printk(KERN_WARNING "INFTL: could not mount device\n");
 		kfree(inftl);
 		return;
-        }
+	}
 
 	/* OK, it's a new one. Set up all the data structures. */
 
@@ -152,6 +151,69 @@ static void inftl_remove_dev(struct mtd_blktrans_dev *dev)
  */
 
 /*
+ * Read oob data from flash
+ */
+int inftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+		   size_t *retlen, uint8_t *buf)
+{
+	struct mtd_oob_ops ops;
+	int res;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = offs & (mtd->writesize - 1);
+	ops.ooblen = len;
+	ops.oobbuf = buf;
+	ops.datbuf = NULL;
+	ops.len = len;
+
+	res = mtd->read_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+	*retlen = ops.retlen;
+	return res;
+}
+
+/*
+ * Write oob data to flash
+ */
+int inftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+		    size_t *retlen, uint8_t *buf)
+{
+	struct mtd_oob_ops ops;
+	int res;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = offs & (mtd->writesize - 1);
+	ops.ooblen = len;
+	ops.oobbuf = buf;
+	ops.datbuf = NULL;
+	ops.len = len;
+
+	res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+	*retlen = ops.retlen;
+	return res;
+}
+
+/*
+ * Write data and oob to flash
+ */
+static int inftl_write(struct mtd_info *mtd, loff_t offs, size_t len,
+		       size_t *retlen, uint8_t *buf, uint8_t *oob)
+{
+	struct mtd_oob_ops ops;
+	int res;
+
+	ops.mode = MTD_OOB_PLACE;
+	ops.ooboffs = offs;
+	ops.ooblen = mtd->oobsize;
+	ops.oobbuf = oob;
+	ops.datbuf = buf;
+	ops.len = len;
+
+	res = mtd->write_oob(mtd, offs & ~(mtd->writesize - 1), &ops);
+	*retlen = ops.retlen;
+	return res;
+}
+
+/*
  * INFTL_findfreeblock: Find a free Erase Unit on the INFTL partition.
  *	This function is used when the give Virtual Unit Chain.
  */
@@ -198,10 +260,11 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
 	u16 BlockMap[MAX_SECTORS_PER_UNIT];
 	unsigned char BlockDeleted[MAX_SECTORS_PER_UNIT];
 	unsigned int thisEUN, prevEUN, status;
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	int block, silly;
 	unsigned int targetEUN;
 	struct inftl_oob oob;
-        size_t retlen;
+	size_t retlen;
 
 	DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_foldchain(inftl=%p,thisVUC=%d,"
 		"pending=%d)\n", inftl, thisVUC, pendingblock);
@@ -221,18 +284,18 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
 	 * Scan to find the Erase Unit which holds the actual data for each
 	 * 512-byte block within the Chain.
 	 */
-        silly = MAX_LOOPS;
+	silly = MAX_LOOPS;
 	while (thisEUN < inftl->nb_blocks) {
 		for (block = 0; block < inftl->EraseSize/SECTORSIZE; block ++) {
 			if ((BlockMap[block] != 0xffff) || BlockDeleted[block])
 				continue;
 
-			if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize)
-			     + (block * SECTORSIZE), 16 , &retlen,
-			     (char *)&oob) < 0)
+			if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize)
+					   + (block * SECTORSIZE), 16, &retlen,
+					   (char *)&oob) < 0)
 				status = SECTOR_IGNORE;
 			else
-                        	status = oob.b.Status | oob.b.Status1;
+				status = oob.b.Status | oob.b.Status1;
 
 			switch(status) {
 			case SECTOR_FREE:
@@ -282,29 +345,31 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
 			continue;
 		}
 
-                /*
+		/*
 		 * Copy only in non free block (free blocks can only
                  * happen in case of media errors or deleted blocks).
 		 */
-                if (BlockMap[block] == BLOCK_NIL)
-                        continue;
-
-                ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize *
-			BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE,
-			&retlen, movebuf);
-                if (ret < 0) {
-			ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize *
-				BlockMap[block]) + (block * SECTORSIZE),
-				SECTORSIZE, &retlen, movebuf);
+		if (BlockMap[block] == BLOCK_NIL)
+			continue;
+
+		ret = mtd->read(mtd, (inftl->EraseSize * BlockMap[block]) +
+				(block * SECTORSIZE), SECTORSIZE, &retlen,
+				movebuf);
+		if (ret < 0 && ret != -EUCLEAN) {
+			ret = mtd->read(mtd,
+					(inftl->EraseSize * BlockMap[block]) +
+					(block * SECTORSIZE), SECTORSIZE,
+					&retlen, movebuf);
 			if (ret != -EIO)
-                        	DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went "
-					"away on retry?\n");
-                }
-                memset(&oob, 0xff, sizeof(struct inftl_oob));
-                oob.b.Status = oob.b.Status1 = SECTOR_USED;
-                MTD_WRITEECC(inftl->mbd.mtd, (inftl->EraseSize * targetEUN) +
-			(block * SECTORSIZE), SECTORSIZE, &retlen,
-			movebuf, (char *)&oob, &inftl->oobinfo);
+				DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went "
+				      "away on retry?\n");
+		}
+		memset(&oob, 0xff, sizeof(struct inftl_oob));
+		oob.b.Status = oob.b.Status1 = SECTOR_USED;
+
+		inftl_write(inftl->mbd.mtd, (inftl->EraseSize * targetEUN) +
+			    (block * SECTORSIZE), SECTORSIZE, &retlen,
+			    movebuf, (char *)&oob);
 	}
 
 	/*
@@ -329,17 +394,17 @@ static u16 INFTL_foldchain(struct INFTLrecord *inftl, unsigned thisVUC, unsigned
 		if (thisEUN == targetEUN)
 			break;
 
-                if (INFTL_formatblock(inftl, thisEUN) < 0) {
+		if (INFTL_formatblock(inftl, thisEUN) < 0) {
 			/*
 			 * Could not erase : mark block as reserved.
 			 */
 			inftl->PUtable[thisEUN] = BLOCK_RESERVED;
-                } else {
+		} else {
 			/* Correctly erased : mark it as free */
 			inftl->PUtable[thisEUN] = BLOCK_FREE;
 			inftl->PUtable[prevEUN] = BLOCK_NIL;
 			inftl->numfreeEUNs++;
-                }
+		}
 	}
 
 	return targetEUN;
@@ -415,6 +480,7 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block)
 	unsigned int thisVUC = block / (inftl->EraseSize / SECTORSIZE);
 	unsigned int thisEUN, writeEUN, prev_block, status;
 	unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize -1);
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	struct inftl_oob oob;
 	struct inftl_bci bci;
 	unsigned char anac, nacs, parity;
@@ -434,10 +500,10 @@ static inline u16 INFTL_findwriteunit(struct INFTLrecord *inftl, unsigned block)
 		silly = MAX_LOOPS;
 
 		while (thisEUN <= inftl->lastEUN) {
-			MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) +
-				blockofs, 8, &retlen, (char *)&bci);
+			inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) +
+				       blockofs, 8, &retlen, (char *)&bci);
 
-                        status = bci.Status | bci.Status1;
+			status = bci.Status | bci.Status1;
 			DEBUG(MTD_DEBUG_LEVEL3, "INFTL: status of block %d in "
 				"EUN %d is %x\n", block , writeEUN, status);
 
@@ -522,8 +588,8 @@ hitused:
 		nacs = 0;
 		thisEUN = inftl->VUtable[thisVUC];
 		if (thisEUN != BLOCK_NIL) {
-			MTD_READOOB(inftl->mbd.mtd, thisEUN * inftl->EraseSize
-				+ 8, 8, &retlen, (char *)&oob.u);
+			inftl_read_oob(mtd, thisEUN * inftl->EraseSize
+				       + 8, 8, &retlen, (char *)&oob.u);
 			anac = oob.u.a.ANAC + 1;
 			nacs = oob.u.a.NACs + 1;
 		}
@@ -544,8 +610,8 @@ hitused:
 		oob.u.a.parityPerField = parity;
 		oob.u.a.discarded = 0xaa;
 
-		MTD_WRITEOOB(inftl->mbd.mtd, writeEUN * inftl->EraseSize + 8, 8,
-			&retlen, (char *)&oob.u);
+		inftl_write_oob(mtd, writeEUN * inftl->EraseSize + 8, 8,
+				&retlen, (char *)&oob.u);
 
 		/* Also back up header... */
 		oob.u.b.virtualUnitNo = cpu_to_le16(thisVUC);
@@ -555,8 +621,8 @@ hitused:
 		oob.u.b.parityPerField = parity;
 		oob.u.b.discarded = 0xaa;
 
-		MTD_WRITEOOB(inftl->mbd.mtd, writeEUN * inftl->EraseSize +
-			SECTORSIZE * 4 + 8, 8, &retlen, (char *)&oob.u);
+		inftl_write_oob(mtd, writeEUN * inftl->EraseSize +
+				SECTORSIZE * 4 + 8, 8, &retlen, (char *)&oob.u);
 
 		inftl->PUtable[writeEUN] = inftl->VUtable[thisVUC];
 		inftl->VUtable[thisVUC] = writeEUN;
@@ -576,6 +642,7 @@ hitused:
  */
 static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC)
 {
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	unsigned char BlockUsed[MAX_SECTORS_PER_UNIT];
 	unsigned char BlockDeleted[MAX_SECTORS_PER_UNIT];
 	unsigned int thisEUN, status;
@@ -606,9 +673,9 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC)
 			if (BlockUsed[block] || BlockDeleted[block])
 				continue;
 
-			if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize)
-			    + (block * SECTORSIZE), 8 , &retlen,
-			    (char *)&bci) < 0)
+			if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize)
+					   + (block * SECTORSIZE), 8 , &retlen,
+					  (char *)&bci) < 0)
 				status = SECTOR_IGNORE;
 			else
 				status = bci.Status | bci.Status1;
@@ -670,12 +737,12 @@ static void INFTL_trydeletechain(struct INFTLrecord *inftl, unsigned thisVUC)
 		DEBUG(MTD_DEBUG_LEVEL3, "Deleting EUN %d from VUC %d\n",
 		      thisEUN, thisVUC);
 
-                if (INFTL_formatblock(inftl, thisEUN) < 0) {
+		if (INFTL_formatblock(inftl, thisEUN) < 0) {
 			/*
 			 * Could not erase : mark block as reserved.
 			 */
 			inftl->PUtable[thisEUN] = BLOCK_RESERVED;
-                } else {
+		} else {
 			/* Correctly erased : mark it as free */
 			inftl->PUtable[thisEUN] = BLOCK_FREE;
 			inftl->numfreeEUNs++;
@@ -697,6 +764,7 @@ static int INFTL_deleteblock(struct INFTLrecord *inftl, unsigned block)
 {
 	unsigned int thisEUN = inftl->VUtable[block / (inftl->EraseSize / SECTORSIZE)];
 	unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize - 1);
+	struct mtd_info *mtd = inftl->mbd.mtd;
 	unsigned int status;
 	int silly = MAX_LOOPS;
 	size_t retlen;
@@ -706,8 +774,8 @@ static int INFTL_deleteblock(struct INFTLrecord *inftl, unsigned block)
 		"block=%d)\n", inftl, block);
 
 	while (thisEUN < inftl->nb_blocks) {
-		if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) +
-		    blockofs, 8, &retlen, (char *)&bci) < 0)
+		if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) +
+				   blockofs, 8, &retlen, (char *)&bci) < 0)
 			status = SECTOR_IGNORE;
 		else
 			status = bci.Status | bci.Status1;
@@ -741,10 +809,10 @@ foundit:
 	if (thisEUN != BLOCK_NIL) {
 		loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs;
 
-		if (MTD_READOOB(inftl->mbd.mtd, ptr, 8, &retlen, (char *)&bci) < 0)
+		if (inftl_read_oob(mtd, ptr, 8, &retlen, (char *)&bci) < 0)
 			return -EIO;
 		bci.Status = bci.Status1 = SECTOR_DELETED;
-		if (MTD_WRITEOOB(inftl->mbd.mtd, ptr, 8, &retlen, (char *)&bci) < 0)
+		if (inftl_write_oob(mtd, ptr, 8, &retlen, (char *)&bci) < 0)
 			return -EIO;
 		INFTL_trydeletechain(inftl, block / (inftl->EraseSize / SECTORSIZE));
 	}
@@ -784,9 +852,10 @@ static int inftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block,
 
 		memset(&oob, 0xff, sizeof(struct inftl_oob));
 		oob.b.Status = oob.b.Status1 = SECTOR_USED;
-		MTD_WRITEECC(inftl->mbd.mtd, (writeEUN * inftl->EraseSize) +
-			blockofs, SECTORSIZE, &retlen, (char *)buffer,
-			(char *)&oob, &inftl->oobinfo);
+
+		inftl_write(inftl->mbd.mtd, (writeEUN * inftl->EraseSize) +
+			    blockofs, SECTORSIZE, &retlen, (char *)buffer,
+			    (char *)&oob);
 		/*
 		 * need to write SECTOR_USED flags since they are not written
 		 * in mtd_writeecc
@@ -804,17 +873,18 @@ static int inftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
 	struct INFTLrecord *inftl = (void *)mbd;
 	unsigned int thisEUN = inftl->VUtable[block / (inftl->EraseSize / SECTORSIZE)];
 	unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize - 1);
-        unsigned int status;
+	struct mtd_info *mtd = inftl->mbd.mtd;
+	unsigned int status;
 	int silly = MAX_LOOPS;
-        struct inftl_bci bci;
+	struct inftl_bci bci;
 	size_t retlen;
 
 	DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_readblock(inftl=%p,block=%ld,"
 		"buffer=%p)\n", inftl, block, buffer);
 
 	while (thisEUN < inftl->nb_blocks) {
-		if (MTD_READOOB(inftl->mbd.mtd, (thisEUN * inftl->EraseSize) +
-		     blockofs, 8, &retlen, (char *)&bci) < 0)
+		if (inftl_read_oob(mtd, (thisEUN * inftl->EraseSize) +
+				  blockofs, 8, &retlen, (char *)&bci) < 0)
 			status = SECTOR_IGNORE;
 		else
 			status = bci.Status | bci.Status1;
@@ -850,10 +920,12 @@ foundit:
 		/* The requested block is not on the media, return all 0x00 */
 		memset(buffer, 0, SECTORSIZE);
 	} else {
-        	size_t retlen;
+		size_t retlen;
 		loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs;
-		if (MTD_READ(inftl->mbd.mtd, ptr, SECTORSIZE, &retlen,
-		    buffer))
+		int ret = mtd->read(mtd, ptr, SECTORSIZE, &retlen, buffer);
+
+		/* Handle corrected bit flips gracefully */
+		if (ret < 0 && ret != -EUCLEAN)
 			return -EIO;
 	}
 	return 0;