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-rw-r--r--drivers/mtd/nftlcore.c316
1 files changed, 191 insertions, 125 deletions
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c
index d7cd5fa16ba..46f27de018c 100644
--- a/drivers/mtd/nftlcore.c
+++ b/drivers/mtd/nftlcore.c
@@ -1,29 +1,36 @@
-/* Linux driver for NAND Flash Translation Layer */
-/* (c) 1999 Machine Vision Holdings, Inc. */
-/* Author: David Woodhouse <dwmw2@infradead.org> */
-/* $Id: nftlcore.c,v 1.98 2005/11/07 11:14:21 gleixner Exp $ */
-
/*
- The contents of this file are distributed under the GNU General
- Public License version 2. The author places no additional
- restrictions of any kind on it.
+ * Linux driver for NAND Flash Translation Layer
+ *
+ * Copyright © 1999 Machine Vision Holdings, Inc.
+ * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org>
+ *
+ * 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
*/
#define PRERELEASE
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/errno.h>
#include <asm/io.h>
#include <asm/uaccess.h>
-#include <linux/miscdevice.h>
-#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/slab.h>
-#include <linux/sched.h>
#include <linux/init.h>
#include <linux/hdreg.h>
+#include <linux/blkdev.h>
#include <linux/kmod.h>
#include <linux/mtd/mtd.h>
@@ -43,35 +50,23 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
struct NFTLrecord *nftl;
unsigned long temp;
- if (mtd->type != MTD_NANDFLASH)
+ if (!mtd_type_is_nand(mtd) || mtd->size > UINT_MAX)
return;
/* OK, this is moderately ugly. But probably safe. Alternatives? */
if (memcmp(mtd->name, "DiskOnChip", 10))
return;
- if (!mtd->block_isbad) {
- printk(KERN_ERR
-"NFTL no longer supports the old DiskOnChip drivers loaded via docprobe.\n"
-"Please use the new diskonchip driver under the NAND subsystem.\n");
- return;
- }
-
- DEBUG(MTD_DEBUG_LEVEL1, "NFTL: add_mtd for %s\n", mtd->name);
+ pr_debug("NFTL: add_mtd for %s\n", mtd->name);
- nftl = kmalloc(sizeof(struct NFTLrecord), GFP_KERNEL);
+ nftl = kzalloc(sizeof(struct NFTLrecord), GFP_KERNEL);
- if (!nftl) {
- printk(KERN_WARNING "NFTL: out of memory for data structures\n");
+ if (!nftl)
return;
- }
- memset(nftl, 0, sizeof(*nftl));
nftl->mbd.mtd = mtd;
nftl->mbd.devnum = -1;
- nftl->mbd.blksize = 512;
+
nftl->mbd.tr = tr;
- memcpy(&nftl->oobinfo, &mtd->oobinfo, sizeof(struct nand_oobinfo));
- nftl->oobinfo.useecc = MTD_NANDECC_PLACEONLY;
if (NFTL_mount(nftl) < 0) {
printk(KERN_WARNING "NFTL: could not mount device\n");
@@ -128,16 +123,79 @@ 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);
kfree(nftl->EUNtable);
- kfree(nftl);
+}
+
+/*
+ * Read oob data from flash
+ */
+int nftl_read_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+ size_t *retlen, uint8_t *buf)
+{
+ loff_t mask = mtd->writesize - 1;
+ struct mtd_oob_ops ops;
+ int res;
+
+ ops.mode = MTD_OPS_PLACE_OOB;
+ ops.ooboffs = offs & mask;
+ ops.ooblen = len;
+ ops.oobbuf = buf;
+ ops.datbuf = NULL;
+
+ res = mtd_read_oob(mtd, offs & ~mask, &ops);
+ *retlen = ops.oobretlen;
+ return res;
+}
+
+/*
+ * Write oob data to flash
+ */
+int nftl_write_oob(struct mtd_info *mtd, loff_t offs, size_t len,
+ size_t *retlen, uint8_t *buf)
+{
+ loff_t mask = mtd->writesize - 1;
+ struct mtd_oob_ops ops;
+ int res;
+
+ ops.mode = MTD_OPS_PLACE_OOB;
+ ops.ooboffs = offs & mask;
+ ops.ooblen = len;
+ ops.oobbuf = buf;
+ ops.datbuf = NULL;
+
+ res = mtd_write_oob(mtd, offs & ~mask, &ops);
+ *retlen = ops.oobretlen;
+ return res;
}
#ifdef CONFIG_NFTL_RW
+/*
+ * Write data and oob to flash
+ */
+static int nftl_write(struct mtd_info *mtd, loff_t offs, size_t len,
+ size_t *retlen, uint8_t *buf, uint8_t *oob)
+{
+ loff_t mask = mtd->writesize - 1;
+ struct mtd_oob_ops ops;
+ int res;
+
+ ops.mode = MTD_OPS_PLACE_OOB;
+ ops.ooboffs = offs & mask;
+ ops.ooblen = mtd->oobsize;
+ ops.oobbuf = oob;
+ ops.datbuf = buf;
+ ops.len = len;
+
+ res = mtd_write_oob(mtd, offs & ~mask, &ops);
+ *retlen = ops.retlen;
+ return res;
+}
+
/* Actual NFTL access routines */
/* NFTL_findfreeblock: Find a free Erase Unit on the NFTL partition. This function is used
* when the give Virtual Unit Chain
@@ -153,8 +211,8 @@ 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");
- return 0xffff;
+ pr_debug("NFTL_findfreeblock: there are too few free EUNs\n");
+ return BLOCK_NIL;
}
/* Scan for a free block */
@@ -176,15 +234,16 @@ static u16 NFTL_findfreeblock(struct NFTLrecord *nftl, int desperate )
printk("Argh! No free blocks found! LastFreeEUN = %d, "
"FirstEUN = %d\n", nftl->LastFreeEUN,
le16_to_cpu(nftl->MediaHdr.FirstPhysicalEUN));
- return 0xffff;
+ return BLOCK_NIL;
}
} while (pot != nftl->LastFreeEUN);
- return 0xffff;
+ return BLOCK_NIL;
}
static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned pendingblock )
{
+ struct mtd_info *mtd = nftl->mbd.mtd;
u16 BlockMap[MAX_SECTORS_PER_UNIT];
unsigned char BlockLastState[MAX_SECTORS_PER_UNIT];
unsigned char BlockFreeFound[MAX_SECTORS_PER_UNIT];
@@ -194,7 +253,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
unsigned int targetEUN;
struct nftl_oob oob;
int inplace = 1;
- size_t retlen;
+ size_t retlen;
memset(BlockMap, 0xff, sizeof(BlockMap));
memset(BlockFreeFound, 0, sizeof(BlockFreeFound));
@@ -210,21 +269,20 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
/* 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;
targetEUN = BLOCK_NIL;
while (thisEUN <= nftl->lastEUN ) {
- unsigned int status, foldmark;
+ unsigned int status, foldmark;
targetEUN = thisEUN;
for (block = 0; block < nftl->EraseSize / 512; block ++) {
- MTD_READOOB(nftl->mbd.mtd,
- (thisEUN * nftl->EraseSize) + (block * 512),
- 16 , &retlen, (char *)&oob);
+ nftl_read_oob(mtd, (thisEUN * nftl->EraseSize) +
+ (block * 512), 16 , &retlen,
+ (char *)&oob);
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);
+ foldmark = oob.u.c.FoldMark | oob.u.c.FoldMark1;
+ if (foldmark == FOLD_MARK_IN_PROGRESS) {
+ pr_debug("Write Inhibited on EUN %d\n", thisEUN);
inplace = 0;
} else {
/* There's no other reason not to do inplace,
@@ -233,7 +291,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
inplace = 1;
}
}
- status = oob.b.Status | oob.b.Status1;
+ status = oob.b.Status | oob.b.Status1;
BlockLastState[block] = status;
switch(status) {
@@ -289,7 +347,7 @@ 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],
@@ -305,14 +363,14 @@ 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);
@@ -328,21 +386,21 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
return BLOCK_NIL;
}
} else {
- /* We put a fold mark in the chain we are folding only if
- we fold in place to help the mount check code. If we do
- not fold in place, it is possible to find the valid
- chain by selecting the longer one */
- oob.u.c.FoldMark = oob.u.c.FoldMark1 = cpu_to_le16(FOLD_MARK_IN_PROGRESS);
- oob.u.c.unused = 0xffffffff;
- MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8,
- 8, &retlen, (char *)&oob.u);
- }
+ /* We put a fold mark in the chain we are folding only if we
+ fold in place to help the mount check code. If we do not fold in
+ place, it is possible to find the valid chain by selecting the
+ longer one */
+ oob.u.c.FoldMark = oob.u.c.FoldMark1 = cpu_to_le16(FOLD_MARK_IN_PROGRESS);
+ oob.u.c.unused = 0xffffffff;
+ nftl_write_oob(mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8,
+ 8, &retlen, (char *)&oob.u);
+ }
/* OK. We now know the location of every block in the Virtual Unit Chain,
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;
@@ -353,33 +411,38 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
continue;
}
- /* copy only in non free block (free blocks can only
+ /* 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(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512),
- 512, &retlen, movebuf);
- if (ret < 0) {
- ret = MTD_READ(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block])
- + (block * 512), 512, &retlen,
- movebuf);
- if (ret != -EIO)
- printk("Error went away on retry.\n");
- }
+ if (BlockMap[block] == BLOCK_NIL)
+ continue;
+
+ ret = mtd_read(mtd,
+ (nftl->EraseSize * BlockMap[block]) + (block * 512),
+ 512,
+ &retlen,
+ movebuf);
+ if (ret < 0 && !mtd_is_bitflip(ret)) {
+ ret = mtd_read(mtd,
+ (nftl->EraseSize * BlockMap[block]) + (block * 512),
+ 512,
+ &retlen,
+ movebuf);
+ if (ret != -EIO)
+ printk("Error went away on retry.\n");
+ }
memset(&oob, 0xff, sizeof(struct nftl_oob));
oob.b.Status = oob.b.Status1 = SECTOR_USED;
- MTD_WRITEECC(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + (block * 512),
- 512, &retlen, movebuf, (char *)&oob, &nftl->oobinfo);
+
+ nftl_write(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) +
+ (block * 512), 512, &retlen, movebuf, (char *)&oob);
}
- /* add the header so that it is now a valid chain */
- oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum
- = cpu_to_le16(thisVUC);
- oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum = 0xffff;
+ /* add the header so that it is now a valid chain */
+ oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum = cpu_to_le16(thisVUC);
+ oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum = BLOCK_NIL;
- MTD_WRITEOOB(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + 8,
- 8, &retlen, (char *)&oob.u);
+ nftl_write_oob(mtd, (nftl->EraseSize * targetEUN) + 8,
+ 8, &retlen, (char *)&oob.u);
/* OK. We've moved the whole lot into the new block. Now we have to free the original blocks. */
@@ -389,25 +452,25 @@ 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 */
while (thisEUN <= nftl->lastEUN && thisEUN != targetEUN) {
unsigned int EUNtmp;
- EUNtmp = nftl->ReplUnitTable[thisEUN];
+ EUNtmp = nftl->ReplUnitTable[thisEUN];
- if (NFTL_formatblock(nftl, thisEUN) < 0) {
+ if (NFTL_formatblock(nftl, thisEUN) < 0) {
/* could not erase : mark block as reserved
*/
nftl->ReplUnitTable[thisEUN] = BLOCK_RESERVED;
- } else {
+ } else {
/* correctly erased : mark it as free */
nftl->ReplUnitTable[thisEUN] = BLOCK_FREE;
nftl->numfreeEUNs++;
- }
- thisEUN = EUNtmp;
+ }
+ thisEUN = EUNtmp;
}
/* Make this the new start of chain for thisVUC */
@@ -460,7 +523,7 @@ static u16 NFTL_makefreeblock( struct NFTLrecord *nftl , unsigned pendingblock)
if (ChainLength < 2) {
printk(KERN_WARNING "No Virtual Unit Chains available for folding. "
"Failing request\n");
- return 0xffff;
+ return BLOCK_NIL;
}
return NFTL_foldchain (nftl, LongestChain, pendingblock);
@@ -473,6 +536,7 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
{
u16 lastEUN;
u16 thisVUC = block / (nftl->EraseSize / 512);
+ struct mtd_info *mtd = nftl->mbd.mtd;
unsigned int writeEUN;
unsigned long blockofs = (block * 512) & (nftl->EraseSize -1);
size_t retlen;
@@ -489,21 +553,22 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
*/
lastEUN = BLOCK_NIL;
writeEUN = nftl->EUNtable[thisVUC];
- silly = MAX_LOOPS;
+ silly = MAX_LOOPS;
while (writeEUN <= nftl->lastEUN) {
struct nftl_bci bci;
size_t retlen;
- unsigned int status;
+ unsigned int status;
lastEUN = writeEUN;
- MTD_READOOB(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs,
- 8, &retlen, (char *)&bci);
+ nftl_read_oob(mtd,
+ (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;
+ status = bci.Status | bci.Status1;
switch(status) {
case SECTOR_FREE:
return writeEUN;
@@ -521,7 +586,7 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
printk(KERN_WARNING
"Infinite loop in Virtual Unit Chain 0x%x\n",
thisVUC);
- return 0xffff;
+ return BLOCK_NIL;
}
/* Skip to next block in chain */
@@ -544,7 +609,7 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
//u16 startEUN = nftl->EUNtable[thisVUC];
//printk("Write to VirtualUnitChain %d, calling makefreeblock()\n", thisVUC);
- writeEUN = NFTL_makefreeblock(nftl, 0xffff);
+ writeEUN = NFTL_makefreeblock(nftl, BLOCK_NIL);
if (writeEUN == BLOCK_NIL) {
/* OK, we accept that the above comment is
@@ -553,7 +618,7 @@ 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) {
@@ -574,10 +639,10 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
/* We've found a free block. Insert it into the chain. */
if (lastEUN != BLOCK_NIL) {
- thisVUC |= 0x8000; /* It's a replacement block */
+ thisVUC |= 0x8000; /* It's a replacement block */
} else {
- /* The first block in a new chain */
- nftl->EUNtable[thisVUC] = writeEUN;
+ /* The first block in a new chain */
+ nftl->EUNtable[thisVUC] = writeEUN;
}
/* set up the actual EUN we're writing into */
@@ -585,29 +650,29 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
nftl->ReplUnitTable[writeEUN] = BLOCK_NIL;
/* ... and on the flash itself */
- MTD_READOOB(nftl->mbd.mtd, writeEUN * nftl->EraseSize + 8, 8,
- &retlen, (char *)&oob.u);
+ nftl_read_oob(mtd, writeEUN * nftl->EraseSize + 8, 8,
+ &retlen, (char *)&oob.u);
oob.u.a.VirtUnitNum = oob.u.a.SpareVirtUnitNum = cpu_to_le16(thisVUC);
- MTD_WRITEOOB(nftl->mbd.mtd, writeEUN * nftl->EraseSize + 8, 8,
- &retlen, (char *)&oob.u);
+ nftl_write_oob(mtd, writeEUN * nftl->EraseSize + 8, 8,
+ &retlen, (char *)&oob.u);
- /* we link the new block to the chain only after the
+ /* we link the new block to the chain only after the
block is ready. It avoids the case where the chain
could point to a free block */
- if (lastEUN != BLOCK_NIL) {
+ if (lastEUN != BLOCK_NIL) {
/* Both in our cache... */
nftl->ReplUnitTable[lastEUN] = writeEUN;
/* ... and on the flash itself */
- MTD_READOOB(nftl->mbd.mtd, (lastEUN * nftl->EraseSize) + 8,
- 8, &retlen, (char *)&oob.u);
+ nftl_read_oob(mtd, (lastEUN * nftl->EraseSize) + 8,
+ 8, &retlen, (char *)&oob.u);
oob.u.a.ReplUnitNum = oob.u.a.SpareReplUnitNum
= cpu_to_le16(writeEUN);
- MTD_WRITEOOB(nftl->mbd.mtd, (lastEUN * nftl->EraseSize) + 8,
- 8, &retlen, (char *)&oob.u);
+ nftl_write_oob(mtd, (lastEUN * nftl->EraseSize) + 8,
+ 8, &retlen, (char *)&oob.u);
}
return writeEUN;
@@ -616,7 +681,7 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
printk(KERN_WARNING "Error folding to make room for Virtual Unit Chain 0x%x\n",
thisVUC);
- return 0xffff;
+ return BLOCK_NIL;
}
static int nftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block,
@@ -639,10 +704,9 @@ static int nftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block,
memset(&oob, 0xff, sizeof(struct nftl_oob));
oob.b.Status = oob.b.Status1 = SECTOR_USED;
- MTD_WRITEECC(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs,
- 512, &retlen, (char *)buffer, (char *)&oob, &nftl->oobinfo);
- /* need to write SECTOR_USED flags since they are not written in mtd_writeecc */
+ nftl_write(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs,
+ 512, &retlen, (char *)buffer, (char *)&oob);
return 0;
}
#endif /* CONFIG_NFTL_RW */
@@ -651,20 +715,22 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
char *buffer)
{
struct NFTLrecord *nftl = (void *)mbd;
+ struct mtd_info *mtd = nftl->mbd.mtd;
u16 lastgoodEUN;
u16 thisEUN = nftl->EUNtable[block / (nftl->EraseSize / 512)];
unsigned long blockofs = (block * 512) & (nftl->EraseSize - 1);
- unsigned int status;
+ unsigned int status;
int silly = MAX_LOOPS;
- size_t retlen;
- struct nftl_bci bci;
+ size_t retlen;
+ struct nftl_bci bci;
lastgoodEUN = BLOCK_NIL;
- if (thisEUN != BLOCK_NIL) {
+ if (thisEUN != BLOCK_NIL) {
while (thisEUN < nftl->nb_blocks) {
- if (MTD_READOOB(nftl->mbd.mtd, (thisEUN * nftl->EraseSize) + blockofs,
- 8, &retlen, (char *)&bci) < 0)
+ if (nftl_read_oob(mtd, (thisEUN * nftl->EraseSize) +
+ blockofs, 8, &retlen,
+ (char *)&bci) < 0)
status = SECTOR_IGNORE;
else
status = bci.Status | bci.Status1;
@@ -694,7 +760,7 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
}
thisEUN = nftl->ReplUnitTable[thisEUN];
}
- }
+ }
the_end:
if (lastgoodEUN == BLOCK_NIL) {
@@ -703,7 +769,9 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
} else {
loff_t ptr = (lastgoodEUN * nftl->EraseSize) + blockofs;
size_t retlen;
- if (MTD_READ(nftl->mbd.mtd, ptr, 512, &retlen, buffer))
+ int res = mtd_read(mtd, ptr, 512, &retlen, buffer);
+
+ if (res < 0 && !mtd_is_bitflip(res))
return -EIO;
}
return 0;
@@ -731,6 +799,7 @@ static struct mtd_blktrans_ops nftl_tr = {
.name = "nftl",
.major = NFTL_MAJOR,
.part_bits = NFTL_PARTN_BITS,
+ .blksize = 512,
.getgeo = nftl_getgeo,
.readsect = nftl_readblock,
#ifdef CONFIG_NFTL_RW
@@ -741,12 +810,8 @@ static struct mtd_blktrans_ops nftl_tr = {
.owner = THIS_MODULE,
};
-extern char nftlmountrev[];
-
static int __init init_nftl(void)
{
- printk(KERN_INFO "NFTL driver: nftlcore.c $Revision: 1.98 $, nftlmount.c %s\n", nftlmountrev);
-
return register_mtd_blktrans(&nftl_tr);
}
@@ -761,3 +826,4 @@ module_exit(cleanup_nftl);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>, Fabrice Bellard <fabrice.bellard@netgem.com> et al.");
MODULE_DESCRIPTION("Support code for NAND Flash Translation Layer, used on M-Systems DiskOnChip 2000 and Millennium");
+MODULE_ALIAS_BLOCKDEV_MAJOR(NFTL_MAJOR);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 21:02:38 +0000