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path: root/drivers/mtd/nand
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Diffstat (limited to 'drivers/mtd/nand')
-rw-r--r--drivers/mtd/nand/nand_base.c51
-rw-r--r--drivers/mtd/nand/nand_bbt.c5
2 files changed, 37 insertions, 19 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 8df36e2c9a53..5dcb2e066ce7 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -897,12 +897,11 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
* @chip: nand chip structure
* @oob: oob destination address
* @ops: oob ops structure
+ * @len: size of oob to transfer
*/
static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
- struct mtd_oob_ops *ops)
+ struct mtd_oob_ops *ops, size_t len)
{
- size_t len = ops->ooblen;
-
switch(ops->mode) {
case MTD_OOB_PLACE:
@@ -960,6 +959,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
int sndcmd = 1;
int ret = 0;
uint32_t readlen = ops->len;
+ uint32_t oobreadlen = ops->ooblen;
uint8_t *bufpoi, *oob, *buf;
stats = mtd->ecc_stats;
@@ -1006,10 +1006,17 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
if (unlikely(oob)) {
/* Raw mode does data:oob:data:oob */
- if (ops->mode != MTD_OOB_RAW)
- oob = nand_transfer_oob(chip, oob, ops);
- else
- buf = nand_transfer_oob(chip, buf, ops);
+ if (ops->mode != MTD_OOB_RAW) {
+ int toread = min(oobreadlen,
+ chip->ecc.layout->oobavail);
+ if (toread) {
+ oob = nand_transfer_oob(chip,
+ oob, ops, toread);
+ oobreadlen -= toread;
+ }
+ } else
+ buf = nand_transfer_oob(chip,
+ buf, ops, mtd->oobsize);
}
if (!(chip->options & NAND_NO_READRDY)) {
@@ -1056,6 +1063,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
}
ops->retlen = ops->len - (size_t) readlen;
+ if (oob)
+ ops->oobretlen = ops->ooblen - oobreadlen;
if (ret)
return ret;
@@ -1256,12 +1265,18 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
int page, realpage, chipnr, sndcmd = 1;
struct nand_chip *chip = mtd->priv;
int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
- int readlen = ops->len;
+ int readlen = ops->ooblen;
+ int len;
uint8_t *buf = ops->oobbuf;
DEBUG(MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08Lx, len = %i\n",
(unsigned long long)from, readlen);
+ if (ops->mode == MTD_OOB_RAW)
+ len = mtd->oobsize;
+ else
+ len = chip->ecc.layout->oobavail;
+
chipnr = (int)(from >> chip->chip_shift);
chip->select_chip(mtd, chipnr);
@@ -1271,7 +1286,9 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
while(1) {
sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd);
- buf = nand_transfer_oob(chip, buf, ops);
+
+ len = min(len, readlen);
+ buf = nand_transfer_oob(chip, buf, ops, len);
if (!(chip->options & NAND_NO_READRDY)) {
/*
@@ -1286,7 +1303,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
nand_wait_ready(mtd);
}
- readlen -= ops->ooblen;
+ readlen -= len;
if (!readlen)
break;
@@ -1308,7 +1325,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
sndcmd = 1;
}
- ops->retlen = ops->len;
+ ops->oobretlen = ops->ooblen;
return 0;
}
@@ -1329,7 +1346,7 @@ static int nand_read_oob(struct mtd_info *mtd, loff_t from,
ops->retlen = 0;
/* Do not allow reads past end of device */
- if ((from + ops->len) > mtd->size) {
+ if (ops->datbuf && (from + ops->len) > mtd->size) {
DEBUG(MTD_DEBUG_LEVEL0, "nand_read_oob: "
"Attempt read beyond end of device\n");
return -EINVAL;
@@ -1654,6 +1671,8 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,
}
ops->retlen = ops->len - writelen;
+ if (unlikely(oob))
+ ops->oobretlen = ops->ooblen;
return ret;
}
@@ -1709,10 +1728,10 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
struct nand_chip *chip = mtd->priv;
DEBUG(MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n",
- (unsigned int)to, (int)ops->len);
+ (unsigned int)to, (int)ops->ooblen);
/* Do not allow write past end of page */
- if ((ops->ooboffs + ops->len) > mtd->oobsize) {
+ if ((ops->ooboffs + ops->ooblen) > mtd->oobsize) {
DEBUG(MTD_DEBUG_LEVEL0, "nand_write_oob: "
"Attempt to write past end of page\n");
return -EINVAL;
@@ -1748,7 +1767,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
if (status)
return status;
- ops->retlen = ops->len;
+ ops->oobretlen = ops->ooblen;
return 0;
}
@@ -1768,7 +1787,7 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to,
ops->retlen = 0;
/* Do not allow writes past end of device */
- if ((to + ops->len) > mtd->size) {
+ if (ops->datbuf && (to + ops->len) > mtd->size) {
DEBUG(MTD_DEBUG_LEVEL0, "nand_read_oob: "
"Attempt read beyond end of device\n");
return -EINVAL;
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index 9402653eb09b..4e74fe9af29e 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -333,7 +333,6 @@ static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd,
struct mtd_oob_ops ops;
int j, ret;
- ops.len = mtd->oobsize;
ops.ooblen = mtd->oobsize;
ops.oobbuf = buf;
ops.ooboffs = 0;
@@ -676,10 +675,10 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
"bad block table\n");
}
/* Read oob data */
- ops.len = (len >> this->page_shift) * mtd->oobsize;
+ ops.ooblen = (len >> this->page_shift) * mtd->oobsize;
ops.oobbuf = &buf[len];
res = mtd->read_oob(mtd, to + mtd->writesize, &ops);
- if (res < 0 || ops.retlen != ops.len)
+ if (res < 0 || ops.oobretlen != ops.ooblen)
goto outerr;
/* Calc the byte offset in the buffer */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 19:21:15 +0000