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