| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Author: |
| * Chuanhong Guo <gch981213@gmail.com> |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/kernel.h> |
| #include <linux/mtd/spinand.h> |
| |
| #define SPINAND_MFR_GIGADEVICE 0xC8 |
| |
| #define GD5FXGQ4XA_STATUS_ECC_1_7_BITFLIPS (1 << 4) |
| #define GD5FXGQ4XA_STATUS_ECC_8_BITFLIPS (3 << 4) |
| |
| #define GD5FXGQ4UEXXG_REG_STATUS2 0xf0 |
| |
| #define GD5FXGQ4UXFXXG_STATUS_ECC_MASK (7 << 4) |
| #define GD5FXGQ4UXFXXG_STATUS_ECC_NO_BITFLIPS (0 << 4) |
| #define GD5FXGQ4UXFXXG_STATUS_ECC_1_3_BITFLIPS (1 << 4) |
| #define GD5FXGQ4UXFXXG_STATUS_ECC_UNCOR_ERROR (7 << 4) |
| |
| 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(read_cache_variants_f, |
| SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_X4_OP_3A(0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_X2_OP_3A(0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_OP_3A(true, 0, 1, NULL, 0), |
| SPINAND_PAGE_READ_FROM_CACHE_OP_3A(false, 0, 0, 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 gd5fxgq4xa_ooblayout_ecc(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section > 3) |
| return -ERANGE; |
| |
| region->offset = (16 * section) + 8; |
| region->length = 8; |
| |
| return 0; |
| } |
| |
| static int gd5fxgq4xa_ooblayout_free(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section > 3) |
| return -ERANGE; |
| |
| if (section) { |
| region->offset = 16 * section; |
| region->length = 8; |
| } else { |
| /* section 0 has one byte reserved for bad block mark */ |
| region->offset = 1; |
| region->length = 7; |
| } |
| return 0; |
| } |
| |
| static const struct mtd_ooblayout_ops gd5fxgq4xa_ooblayout = { |
| .ecc = gd5fxgq4xa_ooblayout_ecc, |
| .free = gd5fxgq4xa_ooblayout_free, |
| }; |
| |
| static int gd5fxgq4xa_ecc_get_status(struct spinand_device *spinand, |
| u8 status) |
| { |
| switch (status & STATUS_ECC_MASK) { |
| case STATUS_ECC_NO_BITFLIPS: |
| return 0; |
| |
| case GD5FXGQ4XA_STATUS_ECC_1_7_BITFLIPS: |
| /* 1-7 bits are flipped. return the maximum. */ |
| return 7; |
| |
| case GD5FXGQ4XA_STATUS_ECC_8_BITFLIPS: |
| return 8; |
| |
| case STATUS_ECC_UNCOR_ERROR: |
| return -EBADMSG; |
| |
| default: |
| break; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int gd5fxgq4_variant2_ooblayout_ecc(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section) |
| return -ERANGE; |
| |
| region->offset = 64; |
| region->length = 64; |
| |
| return 0; |
| } |
| |
| static int gd5fxgq4_variant2_ooblayout_free(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section) |
| return -ERANGE; |
| |
| /* Reserve 1 bytes for the BBM. */ |
| region->offset = 1; |
| region->length = 63; |
| |
| return 0; |
| } |
| |
| static const struct mtd_ooblayout_ops gd5fxgq4_variant2_ooblayout = { |
| .ecc = gd5fxgq4_variant2_ooblayout_ecc, |
| .free = gd5fxgq4_variant2_ooblayout_free, |
| }; |
| |
| static int gd5fxgq4uexxg_ecc_get_status(struct spinand_device *spinand, |
| u8 status) |
| { |
| u8 status2; |
| struct spi_mem_op op = SPINAND_GET_FEATURE_OP(GD5FXGQ4UEXXG_REG_STATUS2, |
| &status2); |
| int ret; |
| |
| switch (status & STATUS_ECC_MASK) { |
| case STATUS_ECC_NO_BITFLIPS: |
| return 0; |
| |
| case GD5FXGQ4XA_STATUS_ECC_1_7_BITFLIPS: |
| /* |
| * Read status2 register to determine a more fine grained |
| * bit error status |
| */ |
| ret = spi_mem_exec_op(spinand->spimem, &op); |
| if (ret) |
| return ret; |
| |
| /* |
| * 4 ... 7 bits are flipped (1..4 can't be detected, so |
| * report the maximum of 4 in this case |
| */ |
| /* bits sorted this way (3...0): ECCS1,ECCS0,ECCSE1,ECCSE0 */ |
| return ((status & STATUS_ECC_MASK) >> 2) | |
| ((status2 & STATUS_ECC_MASK) >> 4); |
| |
| case GD5FXGQ4XA_STATUS_ECC_8_BITFLIPS: |
| return 8; |
| |
| case STATUS_ECC_UNCOR_ERROR: |
| return -EBADMSG; |
| |
| default: |
| break; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int gd5fxgq4ufxxg_ecc_get_status(struct spinand_device *spinand, |
| u8 status) |
| { |
| switch (status & GD5FXGQ4UXFXXG_STATUS_ECC_MASK) { |
| case GD5FXGQ4UXFXXG_STATUS_ECC_NO_BITFLIPS: |
| return 0; |
| |
| case GD5FXGQ4UXFXXG_STATUS_ECC_1_3_BITFLIPS: |
| return 3; |
| |
| case GD5FXGQ4UXFXXG_STATUS_ECC_UNCOR_ERROR: |
| return -EBADMSG; |
| |
| default: /* (2 << 4) through (6 << 4) are 4-8 corrected errors */ |
| return ((status & GD5FXGQ4UXFXXG_STATUS_ECC_MASK) >> 4) + 2; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static const struct spinand_info gigadevice_spinand_table[] = { |
| SPINAND_INFO("GD5F1GQ4xA", 0xF1, |
| 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(&gd5fxgq4xa_ooblayout, |
| gd5fxgq4xa_ecc_get_status)), |
| SPINAND_INFO("GD5F2GQ4xA", 0xF2, |
| 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(&gd5fxgq4xa_ooblayout, |
| gd5fxgq4xa_ecc_get_status)), |
| SPINAND_INFO("GD5F4GQ4xA", 0xF4, |
| NAND_MEMORG(1, 2048, 64, 64, 4096, 80, 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(&gd5fxgq4xa_ooblayout, |
| gd5fxgq4xa_ecc_get_status)), |
| SPINAND_INFO("GD5F1GQ4UExxG", 0xd1, |
| 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), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&gd5fxgq4_variant2_ooblayout, |
| gd5fxgq4uexxg_ecc_get_status)), |
| SPINAND_INFO("GD5F1GQ4UFxxG", 0xb148, |
| NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants_f, |
| &write_cache_variants, |
| &update_cache_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&gd5fxgq4_variant2_ooblayout, |
| gd5fxgq4ufxxg_ecc_get_status)), |
| }; |
| |
| static int gigadevice_spinand_detect(struct spinand_device *spinand) |
| { |
| u8 *id = spinand->id.data; |
| u16 did; |
| int ret; |
| |
| /* |
| * Earlier GDF5-series devices (A,E) return [0][MID][DID] |
| * Later (F) devices return [MID][DID1][DID2] |
| */ |
| |
| if (id[0] == SPINAND_MFR_GIGADEVICE) |
| did = (id[1] << 8) + id[2]; |
| else if (id[0] == 0 && id[1] == SPINAND_MFR_GIGADEVICE) |
| did = id[2]; |
| else |
| return 0; |
| |
| ret = spinand_match_and_init(spinand, gigadevice_spinand_table, |
| ARRAY_SIZE(gigadevice_spinand_table), |
| did); |
| if (ret) |
| return ret; |
| |
| return 1; |
| } |
| |
| static const struct spinand_manufacturer_ops gigadevice_spinand_manuf_ops = { |
| .detect = gigadevice_spinand_detect, |
| }; |
| |
| const struct spinand_manufacturer gigadevice_spinand_manufacturer = { |
| .id = SPINAND_MFR_GIGADEVICE, |
| .name = "GigaDevice", |
| .ops = &gigadevice_spinand_manuf_ops, |
| }; |
