| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Author: |
| * Felix Matouschek <felix@matouschek.org> |
| */ |
| |
| #include <linux/bitfield.h> |
| #include <linux/device.h> |
| #include <linux/kernel.h> |
| #include <linux/mtd/spinand.h> |
| |
| #define SPINAND_MFR_XTX 0x0B |
| |
| #define XT26G0XA_STATUS_ECC_MASK GENMASK(5, 2) |
| #define XT26G0XA_STATUS_ECC_NO_DETECTED (0 << 2) |
| #define XT26G0XA_STATUS_ECC_8_CORRECTED (3 << 4) |
| #define XT26G0XA_STATUS_ECC_UNCOR_ERROR (2 << 4) |
| |
| #define XT26XXXD_STATUS_ECC3_ECC2_MASK GENMASK(7, 6) |
| #define XT26XXXD_STATUS_ECC_NO_DETECTED (0) |
| #define XT26XXXD_STATUS_ECC_1_7_CORRECTED (1) |
| #define XT26XXXD_STATUS_ECC_8_CORRECTED (3) |
| #define XT26XXXD_STATUS_ECC_UNCOR_ERROR (2) |
| |
| static SPINAND_OP_VARIANTS(read_cache_variants, |
| SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); |
| |
| static SPINAND_OP_VARIANTS(write_cache_variants, |
| SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), |
| SPINAND_PROG_LOAD(true, 0, NULL, 0)); |
| |
| static SPINAND_OP_VARIANTS(update_cache_variants, |
| SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), |
| SPINAND_PROG_LOAD(false, 0, NULL, 0)); |
| |
| static int xt26g0xa_ooblayout_ecc(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section) |
| return -ERANGE; |
| |
| region->offset = 48; |
| region->length = 16; |
| |
| return 0; |
| } |
| |
| static int xt26g0xa_ooblayout_free(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section) |
| return -ERANGE; |
| |
| region->offset = 1; |
| region->length = 47; |
| |
| return 0; |
| } |
| |
| static const struct mtd_ooblayout_ops xt26g0xa_ooblayout = { |
| .ecc = xt26g0xa_ooblayout_ecc, |
| .free = xt26g0xa_ooblayout_free, |
| }; |
| |
| static int xt26g0xa_ecc_get_status(struct spinand_device *spinand, |
| u8 status) |
| { |
| status = status & XT26G0XA_STATUS_ECC_MASK; |
| |
| switch (status) { |
| case XT26G0XA_STATUS_ECC_NO_DETECTED: |
| return 0; |
| case XT26G0XA_STATUS_ECC_8_CORRECTED: |
| return 8; |
| case XT26G0XA_STATUS_ECC_UNCOR_ERROR: |
| return -EBADMSG; |
| default: |
| break; |
| } |
| |
| /* At this point values greater than (2 << 4) are invalid */ |
| if (status > XT26G0XA_STATUS_ECC_UNCOR_ERROR) |
| return -EINVAL; |
| |
| /* (1 << 2) through (7 << 2) are 1-7 corrected errors */ |
| return status >> 2; |
| } |
| |
| static int xt26xxxd_ooblayout_ecc(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section) |
| return -ERANGE; |
| |
| region->offset = mtd->oobsize / 2; |
| region->length = mtd->oobsize / 2; |
| |
| return 0; |
| } |
| |
| static int xt26xxxd_ooblayout_free(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section) |
| return -ERANGE; |
| |
| region->offset = 2; |
| region->length = mtd->oobsize / 2 - 2; |
| |
| return 0; |
| } |
| |
| static const struct mtd_ooblayout_ops xt26xxxd_ooblayout = { |
| .ecc = xt26xxxd_ooblayout_ecc, |
| .free = xt26xxxd_ooblayout_free, |
| }; |
| |
| static int xt26xxxd_ecc_get_status(struct spinand_device *spinand, |
| u8 status) |
| { |
| switch (FIELD_GET(STATUS_ECC_MASK, status)) { |
| case XT26XXXD_STATUS_ECC_NO_DETECTED: |
| return 0; |
| case XT26XXXD_STATUS_ECC_UNCOR_ERROR: |
| return -EBADMSG; |
| case XT26XXXD_STATUS_ECC_1_7_CORRECTED: |
| return 4 + FIELD_GET(XT26XXXD_STATUS_ECC3_ECC2_MASK, status); |
| case XT26XXXD_STATUS_ECC_8_CORRECTED: |
| return 8; |
| default: |
| break; |
| } |
| |
| return -EINVAL; |
| } |
| static const struct spinand_info xtx_spinand_table[] = { |
| SPINAND_INFO("XT26G01A", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE1), |
| NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&xt26g0xa_ooblayout, |
| xt26g0xa_ecc_get_status)), |
| SPINAND_INFO("XT26G02A", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE2), |
| NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&xt26g0xa_ooblayout, |
| xt26g0xa_ecc_get_status)), |
| SPINAND_INFO("XT26G04A", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE3), |
| NAND_MEMORG(1, 2048, 64, 128, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&xt26g0xa_ooblayout, |
| xt26g0xa_ecc_get_status)), |
| SPINAND_INFO("XT26G01D", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x31), |
| NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| 0, |
| SPINAND_ECCINFO(&xt26xxxd_ooblayout, |
| xt26xxxd_ecc_get_status)), |
| SPINAND_INFO("XT26G11D", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x34), |
| NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| 0, |
| SPINAND_ECCINFO(&xt26xxxd_ooblayout, |
| xt26xxxd_ecc_get_status)), |
| SPINAND_INFO("XT26Q01D", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x51), |
| NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| 0, |
| SPINAND_ECCINFO(&xt26xxxd_ooblayout, |
| xt26xxxd_ecc_get_status)), |
| SPINAND_INFO("XT26G02D", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x32), |
| NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| 0, |
| SPINAND_ECCINFO(&xt26xxxd_ooblayout, |
| xt26xxxd_ecc_get_status)), |
| SPINAND_INFO("XT26G12D", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x35), |
| NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| 0, |
| SPINAND_ECCINFO(&xt26xxxd_ooblayout, |
| xt26xxxd_ecc_get_status)), |
| SPINAND_INFO("XT26Q02D", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x52), |
| NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| 0, |
| SPINAND_ECCINFO(&xt26xxxd_ooblayout, |
| xt26xxxd_ecc_get_status)), |
| SPINAND_INFO("XT26G04D", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x33), |
| NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| 0, |
| SPINAND_ECCINFO(&xt26xxxd_ooblayout, |
| xt26xxxd_ecc_get_status)), |
| SPINAND_INFO("XT26Q04D", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x53), |
| NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_variants, |
| &update_cache_variants), |
| 0, |
| SPINAND_ECCINFO(&xt26xxxd_ooblayout, |
| xt26xxxd_ecc_get_status)), |
| }; |
| |
| static const struct spinand_manufacturer_ops xtx_spinand_manuf_ops = { |
| }; |
| |
| const struct spinand_manufacturer xtx_spinand_manufacturer = { |
| .id = SPINAND_MFR_XTX, |
| .name = "XTX", |
| .chips = xtx_spinand_table, |
| .nchips = ARRAY_SIZE(xtx_spinand_table), |
| .ops = &xtx_spinand_manuf_ops, |
| }; |
