| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2018 exceet electronics GmbH |
| * Copyright (c) 2018 Kontron Electronics GmbH |
| * |
| * Author: Frieder Schrempf <frieder.schrempf@kontron.de> |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/kernel.h> |
| #include <linux/mtd/spinand.h> |
| |
| /* Kioxia is new name of Toshiba memory. */ |
| #define SPINAND_MFR_TOSHIBA 0x98 |
| #define TOSH_STATUS_ECC_HAS_BITFLIPS_T (3 << 4) |
| |
| static SPINAND_OP_VARIANTS(read_cache_variants, |
| SPINAND_PAGE_READ_FROM_CACHE_X4_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_x4_variants, |
| SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), |
| SPINAND_PROG_LOAD(true, 0, NULL, 0)); |
| |
| static SPINAND_OP_VARIANTS(update_cache_x4_variants, |
| SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), |
| SPINAND_PROG_LOAD(false, 0, NULL, 0)); |
| |
| /** |
| * Backward compatibility for 1st generation Serial NAND devices |
| * which don't support Quad Program Load operation. |
| */ |
| static SPINAND_OP_VARIANTS(write_cache_variants, |
| SPINAND_PROG_LOAD(true, 0, NULL, 0)); |
| |
| static SPINAND_OP_VARIANTS(update_cache_variants, |
| SPINAND_PROG_LOAD(false, 0, NULL, 0)); |
| |
| static int tx58cxgxsxraix_ooblayout_ecc(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section > 0) |
| return -ERANGE; |
| |
| region->offset = mtd->oobsize / 2; |
| region->length = mtd->oobsize / 2; |
| |
| return 0; |
| } |
| |
| static int tx58cxgxsxraix_ooblayout_free(struct mtd_info *mtd, int section, |
| struct mtd_oob_region *region) |
| { |
| if (section > 0) |
| return -ERANGE; |
| |
| /* 2 bytes reserved for BBM */ |
| region->offset = 2; |
| region->length = (mtd->oobsize / 2) - 2; |
| |
| return 0; |
| } |
| |
| static const struct mtd_ooblayout_ops tx58cxgxsxraix_ooblayout = { |
| .ecc = tx58cxgxsxraix_ooblayout_ecc, |
| .free = tx58cxgxsxraix_ooblayout_free, |
| }; |
| |
| static int tx58cxgxsxraix_ecc_get_status(struct spinand_device *spinand, |
| u8 status) |
| { |
| struct nand_device *nand = spinand_to_nand(spinand); |
| u8 mbf = 0; |
| struct spi_mem_op op = SPINAND_GET_FEATURE_OP(0x30, &mbf); |
| |
| switch (status & STATUS_ECC_MASK) { |
| case STATUS_ECC_NO_BITFLIPS: |
| return 0; |
| |
| case STATUS_ECC_UNCOR_ERROR: |
| return -EBADMSG; |
| |
| case STATUS_ECC_HAS_BITFLIPS: |
| case TOSH_STATUS_ECC_HAS_BITFLIPS_T: |
| /* |
| * Let's try to retrieve the real maximum number of bitflips |
| * in order to avoid forcing the wear-leveling layer to move |
| * data around if it's not necessary. |
| */ |
| if (spi_mem_exec_op(spinand->spimem, &op)) |
| return nanddev_get_ecc_requirements(nand)->strength; |
| |
| mbf >>= 4; |
| |
| if (WARN_ON(mbf > nanddev_get_ecc_requirements(nand)->strength || !mbf)) |
| return nanddev_get_ecc_requirements(nand)->strength; |
| |
| return mbf; |
| |
| default: |
| break; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static const struct spinand_info toshiba_spinand_table[] = { |
| /* 3.3V 1Gb (1st generation) */ |
| SPINAND_INFO("TC58CVG0S3HRAIG", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xC2), |
| 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(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 3.3V 2Gb (1st generation) */ |
| SPINAND_INFO("TC58CVG1S3HRAIG", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xCB), |
| 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(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 3.3V 4Gb (1st generation) */ |
| SPINAND_INFO("TC58CVG2S0HRAIG", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xCD), |
| 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(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 1.8V 1Gb (1st generation) */ |
| SPINAND_INFO("TC58CYG0S3HRAIG", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xB2), |
| 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(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 1.8V 2Gb (1st generation) */ |
| SPINAND_INFO("TC58CYG1S3HRAIG", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBB), |
| 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(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 1.8V 4Gb (1st generation) */ |
| SPINAND_INFO("TC58CYG2S0HRAIG", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBD), |
| 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(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| |
| /* |
| * 2nd generation serial nand has HOLD_D which is equivalent to |
| * QE_BIT. |
| */ |
| /* 3.3V 1Gb (2nd generation) */ |
| SPINAND_INFO("TC58CVG0S3HRAIJ", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE2), |
| NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_x4_variants, |
| &update_cache_x4_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 3.3V 2Gb (2nd generation) */ |
| SPINAND_INFO("TC58CVG1S3HRAIJ", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xEB), |
| NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_x4_variants, |
| &update_cache_x4_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 3.3V 4Gb (2nd generation) */ |
| SPINAND_INFO("TC58CVG2S0HRAIJ", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xED), |
| NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_x4_variants, |
| &update_cache_x4_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 3.3V 8Gb (2nd generation) */ |
| SPINAND_INFO("TH58CVG3S0HRAIJ", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4), |
| NAND_MEMORG(1, 4096, 256, 64, 4096, 80, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_x4_variants, |
| &update_cache_x4_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 1.8V 1Gb (2nd generation) */ |
| SPINAND_INFO("TC58CYG0S3HRAIJ", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD2), |
| NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_x4_variants, |
| &update_cache_x4_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 1.8V 2Gb (2nd generation) */ |
| SPINAND_INFO("TC58CYG1S3HRAIJ", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xDB), |
| NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_x4_variants, |
| &update_cache_x4_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 1.8V 4Gb (2nd generation) */ |
| SPINAND_INFO("TC58CYG2S0HRAIJ", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xDD), |
| NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_x4_variants, |
| &update_cache_x4_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| /* 1.8V 8Gb (2nd generation) */ |
| SPINAND_INFO("TH58CYG3S0HRAIJ", |
| SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD4), |
| NAND_MEMORG(1, 4096, 256, 64, 4096, 80, 1, 1, 1), |
| NAND_ECCREQ(8, 512), |
| SPINAND_INFO_OP_VARIANTS(&read_cache_variants, |
| &write_cache_x4_variants, |
| &update_cache_x4_variants), |
| SPINAND_HAS_QE_BIT, |
| SPINAND_ECCINFO(&tx58cxgxsxraix_ooblayout, |
| tx58cxgxsxraix_ecc_get_status)), |
| }; |
| |
| static const struct spinand_manufacturer_ops toshiba_spinand_manuf_ops = { |
| }; |
| |
| const struct spinand_manufacturer toshiba_spinand_manufacturer = { |
| .id = SPINAND_MFR_TOSHIBA, |
| .name = "Toshiba", |
| .chips = toshiba_spinand_table, |
| .nchips = ARRAY_SIZE(toshiba_spinand_table), |
| .ops = &toshiba_spinand_manuf_ops, |
| }; |
