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Diffstat (limited to 'drivers/mtd/inftlcore.c')
-rw-r--r--drivers/mtd/inftlcore.c193
1 files changed, 132 insertions, 61 deletions
diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c
index a3b92479719..4116535805f 100644
--- a/drivers/mtd/inftlcore.c
+++ b/drivers/mtd/inftlcore.c
@@ -24,7 +24,6 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
@@ -36,6 +35,7 @@
#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 +79,12 @@ 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 +150,69 @@ 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 +259,11 @@ 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 +283,18 @@ 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 +344,31 @@ 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 +393,17 @@ 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 +479,7 @@ 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 +499,10 @@ 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 +587,8 @@ 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 +609,8 @@ 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 +620,8 @@ 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 +641,7 @@ 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 +672,9 @@ 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 +736,12 @@ 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 +763,7 @@ 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 +773,8 @@ 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 +808,10 @@ 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 +851,10 @@ 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 +872,18 @@ 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 +919,12 @@ 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;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 02:13:01 +0000