mtd: nand: fsmc: 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
Родитель
caf5129e93
Коммит
22b4695776
|
|
@ -39,212 +39,6 @@
|
|||
#include <linux/amba/bus.h>
|
||||
#include <mtd/mtd-abi.h>
|
||||
|
||||
static struct nand_ecclayout fsmc_ecc1_128_layout = {
|
||||
.eccbytes = 24,
|
||||
.eccpos = {2, 3, 4, 18, 19, 20, 34, 35, 36, 50, 51, 52,
|
||||
66, 67, 68, 82, 83, 84, 98, 99, 100, 114, 115, 116},
|
||||
.oobfree = {
|
||||
{.offset = 8, .length = 8},
|
||||
{.offset = 24, .length = 8},
|
||||
{.offset = 40, .length = 8},
|
||||
{.offset = 56, .length = 8},
|
||||
{.offset = 72, .length = 8},
|
||||
{.offset = 88, .length = 8},
|
||||
{.offset = 104, .length = 8},
|
||||
{.offset = 120, .length = 8}
|
||||
}
|
||||
};
|
||||
|
||||
static struct nand_ecclayout fsmc_ecc1_64_layout = {
|
||||
.eccbytes = 12,
|
||||
.eccpos = {2, 3, 4, 18, 19, 20, 34, 35, 36, 50, 51, 52},
|
||||
.oobfree = {
|
||||
{.offset = 8, .length = 8},
|
||||
{.offset = 24, .length = 8},
|
||||
{.offset = 40, .length = 8},
|
||||
{.offset = 56, .length = 8},
|
||||
}
|
||||
};
|
||||
|
||||
static struct nand_ecclayout fsmc_ecc1_16_layout = {
|
||||
.eccbytes = 3,
|
||||
.eccpos = {2, 3, 4},
|
||||
.oobfree = {
|
||||
{.offset = 8, .length = 8},
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* ECC4 layout for NAND of pagesize 8192 bytes & OOBsize 256 bytes. 13*16 bytes
|
||||
* of OB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block and 46
|
||||
* bytes are free for use.
|
||||
*/
|
||||
static struct nand_ecclayout fsmc_ecc4_256_layout = {
|
||||
.eccbytes = 208,
|
||||
.eccpos = { 2, 3, 4, 5, 6, 7, 8,
|
||||
9, 10, 11, 12, 13, 14,
|
||||
18, 19, 20, 21, 22, 23, 24,
|
||||
25, 26, 27, 28, 29, 30,
|
||||
34, 35, 36, 37, 38, 39, 40,
|
||||
41, 42, 43, 44, 45, 46,
|
||||
50, 51, 52, 53, 54, 55, 56,
|
||||
57, 58, 59, 60, 61, 62,
|
||||
66, 67, 68, 69, 70, 71, 72,
|
||||
73, 74, 75, 76, 77, 78,
|
||||
82, 83, 84, 85, 86, 87, 88,
|
||||
89, 90, 91, 92, 93, 94,
|
||||
98, 99, 100, 101, 102, 103, 104,
|
||||
105, 106, 107, 108, 109, 110,
|
||||
114, 115, 116, 117, 118, 119, 120,
|
||||
121, 122, 123, 124, 125, 126,
|
||||
130, 131, 132, 133, 134, 135, 136,
|
||||
137, 138, 139, 140, 141, 142,
|
||||
146, 147, 148, 149, 150, 151, 152,
|
||||
153, 154, 155, 156, 157, 158,
|
||||
162, 163, 164, 165, 166, 167, 168,
|
||||
169, 170, 171, 172, 173, 174,
|
||||
178, 179, 180, 181, 182, 183, 184,
|
||||
185, 186, 187, 188, 189, 190,
|
||||
194, 195, 196, 197, 198, 199, 200,
|
||||
201, 202, 203, 204, 205, 206,
|
||||
210, 211, 212, 213, 214, 215, 216,
|
||||
217, 218, 219, 220, 221, 222,
|
||||
226, 227, 228, 229, 230, 231, 232,
|
||||
233, 234, 235, 236, 237, 238,
|
||||
242, 243, 244, 245, 246, 247, 248,
|
||||
249, 250, 251, 252, 253, 254
|
||||
},
|
||||
.oobfree = {
|
||||
{.offset = 15, .length = 3},
|
||||
{.offset = 31, .length = 3},
|
||||
{.offset = 47, .length = 3},
|
||||
{.offset = 63, .length = 3},
|
||||
{.offset = 79, .length = 3},
|
||||
{.offset = 95, .length = 3},
|
||||
{.offset = 111, .length = 3},
|
||||
{.offset = 127, .length = 3},
|
||||
{.offset = 143, .length = 3},
|
||||
{.offset = 159, .length = 3},
|
||||
{.offset = 175, .length = 3},
|
||||
{.offset = 191, .length = 3},
|
||||
{.offset = 207, .length = 3},
|
||||
{.offset = 223, .length = 3},
|
||||
{.offset = 239, .length = 3},
|
||||
{.offset = 255, .length = 1}
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* ECC4 layout for NAND of pagesize 4096 bytes & OOBsize 224 bytes. 13*8 bytes
|
||||
* of OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block & 118
|
||||
* bytes are free for use.
|
||||
*/
|
||||
static struct nand_ecclayout fsmc_ecc4_224_layout = {
|
||||
.eccbytes = 104,
|
||||
.eccpos = { 2, 3, 4, 5, 6, 7, 8,
|
||||
9, 10, 11, 12, 13, 14,
|
||||
18, 19, 20, 21, 22, 23, 24,
|
||||
25, 26, 27, 28, 29, 30,
|
||||
34, 35, 36, 37, 38, 39, 40,
|
||||
41, 42, 43, 44, 45, 46,
|
||||
50, 51, 52, 53, 54, 55, 56,
|
||||
57, 58, 59, 60, 61, 62,
|
||||
66, 67, 68, 69, 70, 71, 72,
|
||||
73, 74, 75, 76, 77, 78,
|
||||
82, 83, 84, 85, 86, 87, 88,
|
||||
89, 90, 91, 92, 93, 94,
|
||||
98, 99, 100, 101, 102, 103, 104,
|
||||
105, 106, 107, 108, 109, 110,
|
||||
114, 115, 116, 117, 118, 119, 120,
|
||||
121, 122, 123, 124, 125, 126
|
||||
},
|
||||
.oobfree = {
|
||||
{.offset = 15, .length = 3},
|
||||
{.offset = 31, .length = 3},
|
||||
{.offset = 47, .length = 3},
|
||||
{.offset = 63, .length = 3},
|
||||
{.offset = 79, .length = 3},
|
||||
{.offset = 95, .length = 3},
|
||||
{.offset = 111, .length = 3},
|
||||
{.offset = 127, .length = 97}
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* ECC4 layout for NAND of pagesize 4096 bytes & OOBsize 128 bytes. 13*8 bytes
|
||||
* of OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block & 22
|
||||
* bytes are free for use.
|
||||
*/
|
||||
static struct nand_ecclayout fsmc_ecc4_128_layout = {
|
||||
.eccbytes = 104,
|
||||
.eccpos = { 2, 3, 4, 5, 6, 7, 8,
|
||||
9, 10, 11, 12, 13, 14,
|
||||
18, 19, 20, 21, 22, 23, 24,
|
||||
25, 26, 27, 28, 29, 30,
|
||||
34, 35, 36, 37, 38, 39, 40,
|
||||
41, 42, 43, 44, 45, 46,
|
||||
50, 51, 52, 53, 54, 55, 56,
|
||||
57, 58, 59, 60, 61, 62,
|
||||
66, 67, 68, 69, 70, 71, 72,
|
||||
73, 74, 75, 76, 77, 78,
|
||||
82, 83, 84, 85, 86, 87, 88,
|
||||
89, 90, 91, 92, 93, 94,
|
||||
98, 99, 100, 101, 102, 103, 104,
|
||||
105, 106, 107, 108, 109, 110,
|
||||
114, 115, 116, 117, 118, 119, 120,
|
||||
121, 122, 123, 124, 125, 126
|
||||
},
|
||||
.oobfree = {
|
||||
{.offset = 15, .length = 3},
|
||||
{.offset = 31, .length = 3},
|
||||
{.offset = 47, .length = 3},
|
||||
{.offset = 63, .length = 3},
|
||||
{.offset = 79, .length = 3},
|
||||
{.offset = 95, .length = 3},
|
||||
{.offset = 111, .length = 3},
|
||||
{.offset = 127, .length = 1}
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* ECC4 layout for NAND of pagesize 2048 bytes & OOBsize 64 bytes. 13*4 bytes of
|
||||
* OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block and 10
|
||||
* bytes are free for use.
|
||||
*/
|
||||
static struct nand_ecclayout fsmc_ecc4_64_layout = {
|
||||
.eccbytes = 52,
|
||||
.eccpos = { 2, 3, 4, 5, 6, 7, 8,
|
||||
9, 10, 11, 12, 13, 14,
|
||||
18, 19, 20, 21, 22, 23, 24,
|
||||
25, 26, 27, 28, 29, 30,
|
||||
34, 35, 36, 37, 38, 39, 40,
|
||||
41, 42, 43, 44, 45, 46,
|
||||
50, 51, 52, 53, 54, 55, 56,
|
||||
57, 58, 59, 60, 61, 62,
|
||||
},
|
||||
.oobfree = {
|
||||
{.offset = 15, .length = 3},
|
||||
{.offset = 31, .length = 3},
|
||||
{.offset = 47, .length = 3},
|
||||
{.offset = 63, .length = 1},
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* ECC4 layout for NAND of pagesize 512 bytes & OOBsize 16 bytes. 13 bytes of
|
||||
* OOB size is reserved for ECC, Byte no. 4 & 5 reserved for bad block and One
|
||||
* byte is free for use.
|
||||
*/
|
||||
static struct nand_ecclayout fsmc_ecc4_16_layout = {
|
||||
.eccbytes = 13,
|
||||
.eccpos = { 0, 1, 2, 3, 6, 7, 8,
|
||||
9, 10, 11, 12, 13, 14
|
||||
},
|
||||
.oobfree = {
|
||||
{.offset = 15, .length = 1},
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* ECC placement definitions in oobfree type format.
|
||||
* There are 13 bytes of ecc for every 512 byte block and it has to be read
|
||||
|
|
@ -274,6 +68,84 @@ static struct fsmc_eccplace fsmc_ecc4_sp_place = {
|
|||
}
|
||||
};
|
||||
|
||||
static int fsmc_ecc1_ooblayout_ecc(struct mtd_info *mtd, int section,
|
||||
struct mtd_oob_region *oobregion)
|
||||
{
|
||||
struct nand_chip *chip = mtd_to_nand(mtd);
|
||||
|
||||
if (section >= chip->ecc.steps)
|
||||
return -ERANGE;
|
||||
|
||||
oobregion->offset = (section * 16) + 2;
|
||||
oobregion->length = 3;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int fsmc_ecc1_ooblayout_free(struct mtd_info *mtd, int section,
|
||||
struct mtd_oob_region *oobregion)
|
||||
{
|
||||
struct nand_chip *chip = mtd_to_nand(mtd);
|
||||
|
||||
if (section >= chip->ecc.steps)
|
||||
return -ERANGE;
|
||||
|
||||
oobregion->offset = (section * 16) + 8;
|
||||
|
||||
if (section < chip->ecc.steps - 1)
|
||||
oobregion->length = 8;
|
||||
else
|
||||
oobregion->length = mtd->oobsize - oobregion->offset;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct mtd_ooblayout_ops fsmc_ecc1_ooblayout_ops = {
|
||||
.ecc = fsmc_ecc1_ooblayout_ecc,
|
||||
.free = fsmc_ecc1_ooblayout_free,
|
||||
};
|
||||
|
||||
static int fsmc_ecc4_ooblayout_ecc(struct mtd_info *mtd, int section,
|
||||
struct mtd_oob_region *oobregion)
|
||||
{
|
||||
struct nand_chip *chip = mtd_to_nand(mtd);
|
||||
|
||||
if (section >= chip->ecc.steps)
|
||||
return -ERANGE;
|
||||
|
||||
oobregion->length = chip->ecc.bytes;
|
||||
|
||||
if (!section && mtd->writesize <= 512)
|
||||
oobregion->offset = 0;
|
||||
else
|
||||
oobregion->offset = (section * 16) + 2;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int fsmc_ecc4_ooblayout_free(struct mtd_info *mtd, int section,
|
||||
struct mtd_oob_region *oobregion)
|
||||
{
|
||||
struct nand_chip *chip = mtd_to_nand(mtd);
|
||||
|
||||
if (section >= chip->ecc.steps)
|
||||
return -ERANGE;
|
||||
|
||||
oobregion->offset = (section * 16) + 15;
|
||||
|
||||
if (section < chip->ecc.steps - 1)
|
||||
oobregion->length = 3;
|
||||
else
|
||||
oobregion->length = mtd->oobsize - oobregion->offset;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct mtd_ooblayout_ops fsmc_ecc4_ooblayout_ops = {
|
||||
.ecc = fsmc_ecc4_ooblayout_ecc,
|
||||
.free = fsmc_ecc4_ooblayout_free,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct fsmc_nand_data - structure for FSMC NAND device state
|
||||
*
|
||||
|
|
@ -1084,23 +956,18 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
|
|||
if (AMBA_REV_BITS(host->pid) >= 8) {
|
||||
switch (mtd->oobsize) {
|
||||
case 16:
|
||||
nand->ecc.layout = &fsmc_ecc4_16_layout;
|
||||
host->ecc_place = &fsmc_ecc4_sp_place;
|
||||
break;
|
||||
case 64:
|
||||
nand->ecc.layout = &fsmc_ecc4_64_layout;
|
||||
host->ecc_place = &fsmc_ecc4_lp_place;
|
||||
break;
|
||||
case 128:
|
||||
nand->ecc.layout = &fsmc_ecc4_128_layout;
|
||||
host->ecc_place = &fsmc_ecc4_lp_place;
|
||||
break;
|
||||
case 224:
|
||||
nand->ecc.layout = &fsmc_ecc4_224_layout;
|
||||
host->ecc_place = &fsmc_ecc4_lp_place;
|
||||
break;
|
||||
case 256:
|
||||
nand->ecc.layout = &fsmc_ecc4_256_layout;
|
||||
host->ecc_place = &fsmc_ecc4_lp_place;
|
||||
break;
|
||||
default:
|
||||
|
|
@ -1109,6 +976,8 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
|
|||
ret = -EINVAL;
|
||||
goto err_probe;
|
||||
}
|
||||
|
||||
mtd_set_ooblayout(mtd, &fsmc_ecc4_ooblayout_ops);
|
||||
} else {
|
||||
switch (nand->ecc.mode) {
|
||||
case NAND_ECC_HW:
|
||||
|
|
@ -1135,13 +1004,10 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
|
|||
if (nand->ecc.mode != NAND_ECC_SOFT_BCH) {
|
||||
switch (mtd->oobsize) {
|
||||
case 16:
|
||||
nand->ecc.layout = &fsmc_ecc1_16_layout;
|
||||
break;
|
||||
case 64:
|
||||
nand->ecc.layout = &fsmc_ecc1_64_layout;
|
||||
break;
|
||||
case 128:
|
||||
nand->ecc.layout = &fsmc_ecc1_128_layout;
|
||||
mtd_set_ooblayout(mtd,
|
||||
&fsmc_ecc1_ooblayout_ops);
|
||||
break;
|
||||
default:
|
||||
dev_warn(&pdev->dev,
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче