1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2018 Macronix 4 * 5 * Author: Boris Brezillon <boris.brezillon@bootlin.com> 6 */ 7 8 #include <linux/device.h> 9 #include <linux/kernel.h> 10 #include <linux/mtd/spinand.h> 11 12 #define SPINAND_MFR_MACRONIX 0xC2 13 #define MACRONIX_ECCSR_MASK 0x0F 14 15 static SPINAND_OP_VARIANTS(read_cache_variants, 16 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), 17 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), 18 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0), 19 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); 20 21 static SPINAND_OP_VARIANTS(write_cache_variants, 22 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0), 23 SPINAND_PROG_LOAD(true, 0, NULL, 0)); 24 25 static SPINAND_OP_VARIANTS(update_cache_variants, 26 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0), 27 SPINAND_PROG_LOAD(false, 0, NULL, 0)); 28 29 static int mx35lfxge4ab_ooblayout_ecc(struct mtd_info *mtd, int section, 30 struct mtd_oob_region *region) 31 { 32 return -ERANGE; 33 } 34 35 static int mx35lfxge4ab_ooblayout_free(struct mtd_info *mtd, int section, 36 struct mtd_oob_region *region) 37 { 38 if (section) 39 return -ERANGE; 40 41 region->offset = 2; 42 region->length = mtd->oobsize - 2; 43 44 return 0; 45 } 46 47 static const struct mtd_ooblayout_ops mx35lfxge4ab_ooblayout = { 48 .ecc = mx35lfxge4ab_ooblayout_ecc, 49 .free = mx35lfxge4ab_ooblayout_free, 50 }; 51 52 static int mx35lf1ge4ab_get_eccsr(struct spinand_device *spinand, u8 *eccsr) 53 { 54 struct spi_mem_op op = SPI_MEM_OP(SPI_MEM_OP_CMD(0x7c, 1), 55 SPI_MEM_OP_NO_ADDR, 56 SPI_MEM_OP_DUMMY(1, 1), 57 SPI_MEM_OP_DATA_IN(1, eccsr, 1)); 58 59 int ret = spi_mem_exec_op(spinand->spimem, &op); 60 if (ret) 61 return ret; 62 63 *eccsr &= MACRONIX_ECCSR_MASK; 64 return 0; 65 } 66 67 static int mx35lf1ge4ab_ecc_get_status(struct spinand_device *spinand, 68 u8 status) 69 { 70 struct nand_device *nand = spinand_to_nand(spinand); 71 u8 eccsr; 72 73 switch (status & STATUS_ECC_MASK) { 74 case STATUS_ECC_NO_BITFLIPS: 75 return 0; 76 77 case STATUS_ECC_UNCOR_ERROR: 78 return -EBADMSG; 79 80 case STATUS_ECC_HAS_BITFLIPS: 81 /* 82 * Let's try to retrieve the real maximum number of bitflips 83 * in order to avoid forcing the wear-leveling layer to move 84 * data around if it's not necessary. 85 */ 86 if (mx35lf1ge4ab_get_eccsr(spinand, &eccsr)) 87 return nanddev_get_ecc_conf(nand)->strength; 88 89 if (WARN_ON(eccsr > nanddev_get_ecc_conf(nand)->strength || 90 !eccsr)) 91 return nanddev_get_ecc_conf(nand)->strength; 92 93 return eccsr; 94 95 default: 96 break; 97 } 98 99 return -EINVAL; 100 } 101 102 static const struct spinand_info macronix_spinand_table[] = { 103 SPINAND_INFO("MX35LF1GE4AB", 104 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x12), 105 NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), 106 NAND_ECCREQ(4, 512), 107 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 108 &write_cache_variants, 109 &update_cache_variants), 110 SPINAND_HAS_QE_BIT, 111 SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, 112 mx35lf1ge4ab_ecc_get_status)), 113 SPINAND_INFO("MX35LF2GE4AB", 114 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x22), 115 NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 1, 1), 116 NAND_ECCREQ(4, 512), 117 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 118 &write_cache_variants, 119 &update_cache_variants), 120 SPINAND_HAS_QE_BIT, 121 SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL)), 122 SPINAND_INFO("MX35LF2GE4AD", 123 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x26), 124 NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1), 125 NAND_ECCREQ(8, 512), 126 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 127 &write_cache_variants, 128 &update_cache_variants), 129 0, 130 SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, 131 mx35lf1ge4ab_ecc_get_status)), 132 SPINAND_INFO("MX35LF4GE4AD", 133 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x37), 134 NAND_MEMORG(1, 4096, 128, 64, 2048, 40, 1, 1, 1), 135 NAND_ECCREQ(8, 512), 136 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 137 &write_cache_variants, 138 &update_cache_variants), 139 0, 140 SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, 141 mx35lf1ge4ab_ecc_get_status)), 142 SPINAND_INFO("MX35LF1G24AD", 143 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x14), 144 NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), 145 NAND_ECCREQ(8, 512), 146 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 147 &write_cache_variants, 148 &update_cache_variants), 149 0, 150 SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL)), 151 SPINAND_INFO("MX35LF2G24AD", 152 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x24), 153 NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1), 154 NAND_ECCREQ(8, 512), 155 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 156 &write_cache_variants, 157 &update_cache_variants), 158 0, 159 SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL)), 160 SPINAND_INFO("MX35LF4G24AD", 161 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35), 162 NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 2, 1, 1), 163 NAND_ECCREQ(8, 512), 164 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 165 &write_cache_variants, 166 &update_cache_variants), 167 0, 168 SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL)), 169 SPINAND_INFO("MX31LF1GE4BC", 170 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x1e), 171 NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), 172 NAND_ECCREQ(8, 512), 173 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 174 &write_cache_variants, 175 &update_cache_variants), 176 0 /*SPINAND_HAS_QE_BIT*/, 177 SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, 178 mx35lf1ge4ab_ecc_get_status)), 179 SPINAND_INFO("MX31UF1GE4BC", 180 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x9e), 181 NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), 182 NAND_ECCREQ(8, 512), 183 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 184 &write_cache_variants, 185 &update_cache_variants), 186 0 /*SPINAND_HAS_QE_BIT*/, 187 SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, 188 mx35lf1ge4ab_ecc_get_status)), 189 }; 190 191 static const struct spinand_manufacturer_ops macronix_spinand_manuf_ops = { 192 }; 193 194 const struct spinand_manufacturer macronix_spinand_manufacturer = { 195 .id = SPINAND_MFR_MACRONIX, 196 .name = "Macronix", 197 .chips = macronix_spinand_table, 198 .nchips = ARRAY_SIZE(macronix_spinand_table), 199 .ops = ¯onix_spinand_manuf_ops, 200 }; 201