diff options
Diffstat (limited to 'drivers/mtd/nand/nand_base.c')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 78 |
1 files changed, 32 insertions, 46 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index f2c8ff398d6c..b6facac54fc0 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -313,13 +313,12 @@ static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len) * nand_block_bad - [DEFAULT] Read bad block marker from the chip * @mtd: MTD device structure * @ofs: offset from device start - * @getchip: 0, if the chip is already selected * * Check, if the block is bad. */ -static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) +static int nand_block_bad(struct mtd_info *mtd, loff_t ofs) { - int page, chipnr, res = 0, i = 0; + int page, res = 0, i = 0; struct nand_chip *chip = mtd_to_nand(mtd); u16 bad; @@ -328,15 +327,6 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) page = (int)(ofs >> chip->page_shift) & chip->pagemask; - if (getchip) { - chipnr = (int)(ofs >> chip->chip_shift); - - nand_get_device(mtd, FL_READING); - - /* Select the NAND device */ - chip->select_chip(mtd, chipnr); - } - do { if (chip->options & NAND_BUSWIDTH_16) { chip->cmdfunc(mtd, NAND_CMD_READOOB, @@ -361,11 +351,6 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) i++; } while (!res && i < 2 && (chip->bbt_options & NAND_BBT_SCAN2NDPAGE)); - if (getchip) { - chip->select_chip(mtd, -1); - nand_release_device(mtd); - } - return res; } @@ -503,19 +488,17 @@ static int nand_block_isreserved(struct mtd_info *mtd, loff_t ofs) * nand_block_checkbad - [GENERIC] Check if a block is marked bad * @mtd: MTD device structure * @ofs: offset from device start - * @getchip: 0, if the chip is already selected * @allowbbt: 1, if its allowed to access the bbt area * * Check, if the block is bad. Either by reading the bad block table or * calling of the scan function. */ -static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip, - int allowbbt) +static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int allowbbt) { struct nand_chip *chip = mtd_to_nand(mtd); if (!chip->bbt) - return chip->block_bad(mtd, ofs, getchip); + return chip->block_bad(mtd, ofs); /* Return info from the table */ return nand_isbad_bbt(mtd, ofs, allowbbt); @@ -566,8 +549,8 @@ void nand_wait_ready(struct mtd_info *mtd) cond_resched(); } while (time_before(jiffies, timeo)); - pr_warn_ratelimited( - "timeout while waiting for chip to become ready\n"); + if (!chip->dev_ready(mtd)) + pr_warn_ratelimited("timeout while waiting for chip to become ready\n"); out: led_trigger_event(nand_led_trigger, LED_OFF); } @@ -1723,8 +1706,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, int ret = 0; uint32_t readlen = ops->len; uint32_t oobreadlen = ops->ooblen; - uint32_t max_oobsize = ops->mode == MTD_OPS_AUTO_OOB ? - mtd->oobavail : mtd->oobsize; + uint32_t max_oobsize = mtd_oobavail(mtd, ops); uint8_t *bufpoi, *oob, *buf; int use_bufpoi; @@ -2075,10 +2057,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, stats = mtd->ecc_stats; - if (ops->mode == MTD_OPS_AUTO_OOB) - len = chip->ecc.layout->oobavail; - else - len = mtd->oobsize; + len = mtd_oobavail(mtd, ops); if (unlikely(ops->ooboffs >= len)) { pr_debug("%s: attempt to start read outside oob\n", @@ -2575,8 +2554,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, uint32_t writelen = ops->len; uint32_t oobwritelen = ops->ooblen; - uint32_t oobmaxlen = ops->mode == MTD_OPS_AUTO_OOB ? - mtd->oobavail : mtd->oobsize; + uint32_t oobmaxlen = mtd_oobavail(mtd, ops); uint8_t *oob = ops->oobbuf; uint8_t *buf = ops->datbuf; @@ -2766,10 +2744,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, pr_debug("%s: to = 0x%08x, len = %i\n", __func__, (unsigned int)to, (int)ops->ooblen); - if (ops->mode == MTD_OPS_AUTO_OOB) - len = chip->ecc.layout->oobavail; - else - len = mtd->oobsize; + len = mtd_oobavail(mtd, ops); /* Do not allow write past end of page */ if ((ops->ooboffs + ops->ooblen) > len) { @@ -2957,7 +2932,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, while (len) { /* Check if we have a bad block, we do not erase bad blocks! */ if (nand_block_checkbad(mtd, ((loff_t) page) << - chip->page_shift, 0, allowbbt)) { + chip->page_shift, allowbbt)) { pr_warn("%s: attempt to erase a bad block at page 0x%08x\n", __func__, page); instr->state = MTD_ERASE_FAILED; @@ -3044,7 +3019,20 @@ static void nand_sync(struct mtd_info *mtd) */ static int nand_block_isbad(struct mtd_info *mtd, loff_t offs) { - return nand_block_checkbad(mtd, offs, 1, 0); + struct nand_chip *chip = mtd_to_nand(mtd); + int chipnr = (int)(offs >> chip->chip_shift); + int ret; + + /* Select the NAND device */ + nand_get_device(mtd, FL_READING); + chip->select_chip(mtd, chipnr); + + ret = nand_block_checkbad(mtd, offs, 0); + + chip->select_chip(mtd, -1); + nand_release_device(mtd); + + return ret; } /** @@ -4287,10 +4275,8 @@ int nand_scan_tail(struct mtd_info *mtd) } /* See nand_bch_init() for details. */ - ecc->bytes = DIV_ROUND_UP( - ecc->strength * fls(8 * ecc->size), 8); - ecc->priv = nand_bch_init(mtd, ecc->size, ecc->bytes, - &ecc->layout); + ecc->bytes = 0; + ecc->priv = nand_bch_init(mtd); if (!ecc->priv) { pr_warn("BCH ECC initialization failed!\n"); BUG(); @@ -4325,11 +4311,11 @@ int nand_scan_tail(struct mtd_info *mtd) * The number of bytes available for a client to place data into * the out of band area. */ - ecc->layout->oobavail = 0; - for (i = 0; ecc->layout->oobfree[i].length - && i < ARRAY_SIZE(ecc->layout->oobfree); i++) - ecc->layout->oobavail += ecc->layout->oobfree[i].length; - mtd->oobavail = ecc->layout->oobavail; + mtd->oobavail = 0; + if (ecc->layout) { + for (i = 0; ecc->layout->oobfree[i].length; i++) + mtd->oobavail += ecc->layout->oobfree[i].length; + } /* ECC sanity check: warn if it's too weak */ if (!nand_ecc_strength_good(mtd)) |