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path: root/drivers/mtd/nftlcore.c
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Diffstat (limited to 'drivers/mtd/nftlcore.c')
-rw-r--r--drivers/mtd/nftlcore.c92
1 files changed, 76 insertions, 16 deletions
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c
index 359533b33d9..f6ffe7949b2 100644
--- a/drivers/mtd/nftlcore.c
+++ b/drivers/mtd/nftlcore.c
@@ -134,6 +134,69 @@ static void nftl_remove_dev(struct mtd_blktrans_dev *dev)
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)
+{
+ 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 nftl_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 nftl_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;
+}
+
#ifdef CONFIG_NFTL_RW
/* Actual NFTL access routines */
@@ -216,7 +279,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
targetEUN = thisEUN;
for (block = 0; block < nftl->EraseSize / 512; block ++) {
- mtd->read_oob(mtd, (thisEUN * nftl->EraseSize) +
+ nftl_read_oob(mtd, (thisEUN * nftl->EraseSize) +
(block * 512), 16 , &retlen,
(char *)&oob);
if (block == 2) {
@@ -333,7 +396,7 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
longer one */
oob.u.c.FoldMark = oob.u.c.FoldMark1 = cpu_to_le16(FOLD_MARK_IN_PROGRESS);
oob.u.c.unused = 0xffffffff;
- mtd->write_oob(mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8,
+ nftl_write_oob(mtd, (nftl->EraseSize * targetEUN) + 2 * 512 + 8,
8, &retlen, (char *)&oob.u);
}
@@ -369,17 +432,15 @@ static u16 NFTL_foldchain (struct NFTLrecord *nftl, unsigned thisVUC, unsigned p
memset(&oob, 0xff, sizeof(struct nftl_oob));
oob.b.Status = oob.b.Status1 = SECTOR_USED;
- nand_write_raw(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) +
- (block * 512), 512, &retlen, movebuf,
- (char *)&oob);
-
+ 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;
- mtd->write_oob(mtd, (nftl->EraseSize * targetEUN) + 8,
+ 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. */
@@ -499,7 +560,7 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
lastEUN = writeEUN;
- mtd->read_oob(mtd,
+ nftl_read_oob(mtd,
(writeEUN * nftl->EraseSize) + blockofs,
8, &retlen, (char *)&bci);
@@ -588,12 +649,12 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
nftl->ReplUnitTable[writeEUN] = BLOCK_NIL;
/* ... and on the flash itself */
- mtd->read_oob(mtd, writeEUN * nftl->EraseSize + 8, 8,
+ 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->write_oob(mtd, writeEUN * nftl->EraseSize + 8, 8,
+ nftl_write_oob(mtd, writeEUN * nftl->EraseSize + 8, 8,
&retlen, (char *)&oob.u);
/* we link the new block to the chain only after the
@@ -603,13 +664,13 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
/* Both in our cache... */
nftl->ReplUnitTable[lastEUN] = writeEUN;
/* ... and on the flash itself */
- mtd->read_oob(mtd, (lastEUN * nftl->EraseSize) + 8,
+ 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->write_oob(mtd, (lastEUN * nftl->EraseSize) + 8,
+ nftl_write_oob(mtd, (lastEUN * nftl->EraseSize) + 8,
8, &retlen, (char *)&oob.u);
}
@@ -643,9 +704,8 @@ 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;
- nand_write_raw(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) +
- blockofs, 512, &retlen, (char *)buffer,
- (char *)&oob);
+ nftl_write(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs,
+ 512, &retlen, (char *)buffer, (char *)&oob);
return 0;
}
#endif /* CONFIG_NFTL_RW */
@@ -667,7 +727,7 @@ static int nftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block,
if (thisEUN != BLOCK_NIL) {
while (thisEUN < nftl->nb_blocks) {
- if (mtd->read_oob(mtd, (thisEUN * nftl->EraseSize) +
+ if (nftl_read_oob(mtd, (thisEUN * nftl->EraseSize) +
blockofs, 8, &retlen,
(char *)&bci) < 0)
status = SECTOR_IGNORE;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-29 21:41:29 +0000