mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
mtd: nand: pxa3xx: switch to mtd_ooblayout_ops
Implementing the mtd_ooblayout_ops interface is the new way of exposing ECC/OOB layout to MTD users. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This commit is contained in:
Boris Brezillon
parent
e04dbf3528
commit
39980c5616
1 changed files with 64 additions and 40 deletions
|
|
@ -323,6 +323,62 @@ static struct pxa3xx_nand_flash builtin_flash_types[] = {
|
|||
{ 0xba20, 16, 16, &timing[3] },
|
||||
};
|
||||
|
||||
static int pxa3xx_ooblayout_ecc(struct mtd_info *mtd, int section,
|
||||
struct mtd_oob_region *oobregion)
|
||||
{
|
||||
struct nand_chip *chip = mtd_to_nand(mtd);
|
||||
struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
|
||||
struct pxa3xx_nand_info *info = host->info_data;
|
||||
int nchunks = mtd->writesize / info->chunk_size;
|
||||
|
||||
if (section >= nchunks)
|
||||
return -ERANGE;
|
||||
|
||||
oobregion->offset = ((info->ecc_size + info->spare_size) * section) +
|
||||
info->spare_size;
|
||||
oobregion->length = info->ecc_size;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int pxa3xx_ooblayout_free(struct mtd_info *mtd, int section,
|
||||
struct mtd_oob_region *oobregion)
|
||||
{
|
||||
struct nand_chip *chip = mtd_to_nand(mtd);
|
||||
struct pxa3xx_nand_host *host = nand_get_controller_data(chip);
|
||||
struct pxa3xx_nand_info *info = host->info_data;
|
||||
int nchunks = mtd->writesize / info->chunk_size;
|
||||
|
||||
if (section >= nchunks)
|
||||
return -ERANGE;
|
||||
|
||||
if (!info->spare_size)
|
||||
return 0;
|
||||
|
||||
oobregion->offset = section * (info->ecc_size + info->spare_size);
|
||||
oobregion->length = info->spare_size;
|
||||
if (!section) {
|
||||
/*
|
||||
* Bootrom looks in bytes 0 & 5 for bad blocks for the
|
||||
* 4KB page / 4bit BCH combination.
|
||||
*/
|
||||
if (mtd->writesize == 4096 && info->chunk_size == 2048) {
|
||||
oobregion->offset += 6;
|
||||
oobregion->length -= 6;
|
||||
} else {
|
||||
oobregion->offset += 2;
|
||||
oobregion->length -= 2;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct mtd_ooblayout_ops pxa3xx_ooblayout_ops = {
|
||||
.ecc = pxa3xx_ooblayout_ecc,
|
||||
.free = pxa3xx_ooblayout_free,
|
||||
};
|
||||
|
||||
static u8 bbt_pattern[] = {'M', 'V', 'B', 'b', 't', '0' };
|
||||
static u8 bbt_mirror_pattern[] = {'1', 't', 'b', 'B', 'V', 'M' };
|
||||
|
||||
|
|
@ -346,41 +402,6 @@ static struct nand_bbt_descr bbt_mirror_descr = {
|
|||
.pattern = bbt_mirror_pattern
|
||||
};
|
||||
|
||||
static struct nand_ecclayout ecc_layout_2KB_bch4bit = {
|
||||
.eccbytes = 32,
|
||||
.eccpos = {
|
||||
32, 33, 34, 35, 36, 37, 38, 39,
|
||||
40, 41, 42, 43, 44, 45, 46, 47,
|
||||
48, 49, 50, 51, 52, 53, 54, 55,
|
||||
56, 57, 58, 59, 60, 61, 62, 63},
|
||||
.oobfree = { {2, 30} }
|
||||
};
|
||||
|
||||
static struct nand_ecclayout ecc_layout_4KB_bch4bit = {
|
||||
.eccbytes = 64,
|
||||
.eccpos = {
|
||||
32, 33, 34, 35, 36, 37, 38, 39,
|
||||
40, 41, 42, 43, 44, 45, 46, 47,
|
||||
48, 49, 50, 51, 52, 53, 54, 55,
|
||||
56, 57, 58, 59, 60, 61, 62, 63,
|
||||
96, 97, 98, 99, 100, 101, 102, 103,
|
||||
104, 105, 106, 107, 108, 109, 110, 111,
|
||||
112, 113, 114, 115, 116, 117, 118, 119,
|
||||
120, 121, 122, 123, 124, 125, 126, 127},
|
||||
/* Bootrom looks in bytes 0 & 5 for bad blocks */
|
||||
.oobfree = { {6, 26}, { 64, 32} }
|
||||
};
|
||||
|
||||
static struct nand_ecclayout ecc_layout_4KB_bch8bit = {
|
||||
.eccbytes = 128,
|
||||
.eccpos = {
|
||||
32, 33, 34, 35, 36, 37, 38, 39,
|
||||
40, 41, 42, 43, 44, 45, 46, 47,
|
||||
48, 49, 50, 51, 52, 53, 54, 55,
|
||||
56, 57, 58, 59, 60, 61, 62, 63},
|
||||
.oobfree = { }
|
||||
};
|
||||
|
||||
#define NDTR0_tCH(c) (min((c), 7) << 19)
|
||||
#define NDTR0_tCS(c) (min((c), 7) << 16)
|
||||
#define NDTR0_tWH(c) (min((c), 7) << 11)
|
||||
|
|
@ -1545,9 +1566,12 @@ static void pxa3xx_nand_free_buff(struct pxa3xx_nand_info *info)
|
|||
}
|
||||
|
||||
static int pxa_ecc_init(struct pxa3xx_nand_info *info,
|
||||
struct nand_ecc_ctrl *ecc,
|
||||
struct mtd_info *mtd,
|
||||
int strength, int ecc_stepsize, int page_size)
|
||||
{
|
||||
struct nand_chip *chip = mtd_to_nand(mtd);
|
||||
struct nand_ecc_ctrl *ecc = &chip->ecc;
|
||||
|
||||
if (strength == 1 && ecc_stepsize == 512 && page_size == 2048) {
|
||||
info->nfullchunks = 1;
|
||||
info->ntotalchunks = 1;
|
||||
|
|
@ -1581,7 +1605,7 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info,
|
|||
info->ecc_size = 32;
|
||||
ecc->mode = NAND_ECC_HW;
|
||||
ecc->size = info->chunk_size;
|
||||
ecc->layout = &ecc_layout_2KB_bch4bit;
|
||||
mtd_set_ooblayout(mtd, &pxa3xx_ooblayout_ops);
|
||||
ecc->strength = 16;
|
||||
|
||||
} else if (strength == 4 && ecc_stepsize == 512 && page_size == 4096) {
|
||||
|
|
@ -1593,7 +1617,7 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info,
|
|||
info->ecc_size = 32;
|
||||
ecc->mode = NAND_ECC_HW;
|
||||
ecc->size = info->chunk_size;
|
||||
ecc->layout = &ecc_layout_4KB_bch4bit;
|
||||
mtd_set_ooblayout(mtd, &pxa3xx_ooblayout_ops);
|
||||
ecc->strength = 16;
|
||||
|
||||
/*
|
||||
|
|
@ -1611,7 +1635,7 @@ static int pxa_ecc_init(struct pxa3xx_nand_info *info,
|
|||
info->ecc_size = 32;
|
||||
ecc->mode = NAND_ECC_HW;
|
||||
ecc->size = info->chunk_size;
|
||||
ecc->layout = &ecc_layout_4KB_bch8bit;
|
||||
mtd_set_ooblayout(mtd, &pxa3xx_ooblayout_ops);
|
||||
ecc->strength = 16;
|
||||
} else {
|
||||
dev_err(&info->pdev->dev,
|
||||
|
|
@ -1706,7 +1730,7 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
|
|||
ecc_step = 512;
|
||||
}
|
||||
|
||||
ret = pxa_ecc_init(info, &chip->ecc, ecc_strength,
|
||||
ret = pxa_ecc_init(info, mtd, ecc_strength,
|
||||
ecc_step, mtd->writesize);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
|
|
|||
Loading…
Reference in a new issue