1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2020-2021 Rockchip Electronics Co., Ltd. 4 * 5 * Author: Dingqiang Lin <jon.lin@rock-chips.com> 6 */ 7 8 #include <linux/device.h> 9 #include <linux/kernel.h> 10 #include <linux/mtd/spinand.h> 11 12 #define FM25G01B_STATUS_ECC_MASK (7 << 4) 13 #define FM25G01B_STATUS_ECC_NO_BITFLIPS (0 << 4) 14 #define FM25G01B_STATUS_ECC_1_3_BITFLIPS (1 << 4) 15 #define FM25G01B_STATUS_ECC_4_BITFLIPS (2 << 4) 16 #define FM25G01B_STATUS_ECC_5_BITFLIPS (3 << 4) 17 #define FM25G01B_STATUS_ECC_6_BITFLIPS (4 << 4) 18 #define FM25G01B_STATUS_ECC_7_BITFLIPS (5 << 4) 19 #define FM25G01B_STATUS_ECC_8_BITFLIPS (6 << 4) 20 #define FM25G01B_STATUS_ECC_UNCOR_ERROR (7 << 4) 21 22 #define FM25S01BI3_STATUS_ECC_MASK (7 << 4) 23 #define FM25S01BI3_STATUS_ECC_NO_BITFLIPS (0 << 4) 24 #define FM25S01BI3_STATUS_ECC_1_3_BITFLIPS (1 << 4) 25 #define FM25S01BI3_STATUS_ECC_UNCOR_ERROR (2 << 4) 26 #define FM25S01BI3_STATUS_ECC_4_6_BITFLIPS (3 << 4) 27 #define FM25S01BI3_STATUS_ECC_7_8_BITFLIPS (5 << 4) 28 29 #define SPINAND_MFR_FMSH 0xA1 30 31 static SPINAND_OP_VARIANTS(read_cache_variants, 32 SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(0, 2, NULL, 0, 0), 33 SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0), 34 SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(0, 1, NULL, 0, 0), 35 SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0), 36 SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0), 37 SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0)); 38 39 static SPINAND_OP_VARIANTS(write_cache_variants, 40 SPINAND_PROG_LOAD_1S_1S_4S_OP(true, 0, NULL, 0), 41 SPINAND_PROG_LOAD_1S_1S_1S_OP(true, 0, NULL, 0)); 42 43 static SPINAND_OP_VARIANTS(update_cache_variants, 44 SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0), 45 SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0)); 46 47 static SPINAND_OP_VARIANTS(fm25g_read_cache_variants, 48 SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(0, 1, NULL, 0, 0), 49 SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0), 50 SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(0, 1, NULL, 0, 0), 51 SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0), 52 SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0), 53 SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0)); 54 55 static int fm25g01b_ooblayout_ecc(struct mtd_info *mtd, int section, 56 struct mtd_oob_region *region) 57 { 58 if (section) 59 return -ERANGE; 60 61 region->offset = 64; 62 region->length = 64; 63 64 return 0; 65 } 66 67 static int fm25g01b_ooblayout_free(struct mtd_info *mtd, int section, 68 struct mtd_oob_region *region) 69 { 70 if (section) 71 return -ERANGE; 72 73 /* reserve 2 bytes for the BBM */ 74 region->offset = 2; 75 region->length = 62; 76 77 return 0; 78 } 79 80 static int fm25g01b_ecc_get_status(struct spinand_device *spinand, 81 u8 status) 82 { 83 switch (status & FM25G01B_STATUS_ECC_MASK) { 84 case FM25G01B_STATUS_ECC_NO_BITFLIPS: 85 return 0; 86 87 case FM25G01B_STATUS_ECC_1_3_BITFLIPS: 88 return 3; 89 90 case FM25G01B_STATUS_ECC_4_BITFLIPS: 91 return 4; 92 93 case FM25G01B_STATUS_ECC_5_BITFLIPS: 94 return 5; 95 96 case FM25G01B_STATUS_ECC_6_BITFLIPS: 97 return 6; 98 99 case FM25G01B_STATUS_ECC_7_BITFLIPS: 100 return 7; 101 102 case FM25G01B_STATUS_ECC_8_BITFLIPS: 103 return 8; 104 105 case FM25G01B_STATUS_ECC_UNCOR_ERROR: 106 return -EBADMSG; 107 108 default: 109 break; 110 } 111 112 return -EINVAL; 113 } 114 115 static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section, 116 struct mtd_oob_region *region) 117 { 118 return -ERANGE; 119 } 120 121 static int fm25s01a_ooblayout_free(struct mtd_info *mtd, int section, 122 struct mtd_oob_region *region) 123 { 124 if (section) 125 return -ERANGE; 126 127 region->offset = 2; 128 region->length = 62; 129 130 return 0; 131 } 132 133 static int fm25s01bi3_ecc_get_status(struct spinand_device *spinand, 134 u8 status) 135 { 136 switch (status & FM25S01BI3_STATUS_ECC_MASK) { 137 case FM25S01BI3_STATUS_ECC_NO_BITFLIPS: 138 return 0; 139 140 case FM25S01BI3_STATUS_ECC_UNCOR_ERROR: 141 return -EBADMSG; 142 143 case FM25S01BI3_STATUS_ECC_1_3_BITFLIPS: 144 return 3; 145 146 case FM25S01BI3_STATUS_ECC_4_6_BITFLIPS: 147 return 6; 148 149 case FM25S01BI3_STATUS_ECC_7_8_BITFLIPS: 150 return 8; 151 152 default: 153 break; 154 } 155 156 return -EINVAL; 157 } 158 159 static int fm25s01bi3_ooblayout_ecc(struct mtd_info *mtd, int section, 160 struct mtd_oob_region *region) 161 { 162 if (section) 163 return -ERANGE; 164 165 region->offset = 64; 166 region->length = 64; 167 168 return 0; 169 } 170 171 static int fm25s01bi3_ooblayout_free(struct mtd_info *mtd, int section, 172 struct mtd_oob_region *region) 173 { 174 if (section > 3) 175 return -ERANGE; 176 177 region->offset = (16 * section) + 4; 178 region->length = 12; 179 180 return 0; 181 } 182 183 static const struct mtd_ooblayout_ops fm25g01b_ooblayout = { 184 .ecc = fm25g01b_ooblayout_ecc, 185 .free = fm25g01b_ooblayout_free, 186 }; 187 188 static const struct mtd_ooblayout_ops fm25s01a_ooblayout = { 189 .ecc = fm25s01a_ooblayout_ecc, 190 .free = fm25s01a_ooblayout_free, 191 }; 192 193 static const struct mtd_ooblayout_ops fm25s01bi3_ooblayout = { 194 .ecc = fm25s01bi3_ooblayout_ecc, 195 .free = fm25s01bi3_ooblayout_free, 196 }; 197 198 static const struct spinand_info fmsh_spinand_table[] = { 199 SPINAND_INFO("FM25G01B", 200 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xd1), 201 NAND_MEMORG(1, 2048, 128, 64, 1024, 21, 1, 1, 1), 202 NAND_ECCREQ(8, 528), 203 SPINAND_INFO_OP_VARIANTS(&fm25g_read_cache_variants, 204 &write_cache_variants, 205 &update_cache_variants), 206 SPINAND_HAS_QE_BIT, 207 SPINAND_ECCINFO(&fm25g01b_ooblayout, 208 fm25g01b_ecc_get_status)), 209 SPINAND_INFO("FM25G02B", 210 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xd2), 211 NAND_MEMORG(1, 2048, 128, 64, 2048, 41, 1, 1, 1), 212 NAND_ECCREQ(8, 528), 213 SPINAND_INFO_OP_VARIANTS(&fm25g_read_cache_variants, 214 &write_cache_variants, 215 &update_cache_variants), 216 SPINAND_HAS_QE_BIT, 217 SPINAND_ECCINFO(&fm25g01b_ooblayout, 218 fm25g01b_ecc_get_status)), 219 SPINAND_INFO("FM25S01A", 220 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4), 221 NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), 222 NAND_ECCREQ(1, 512), 223 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 224 &write_cache_variants, 225 &update_cache_variants), 226 0, 227 SPINAND_ECCINFO(&fm25s01a_ooblayout, NULL)), 228 SPINAND_INFO("FM25S01BI3", 229 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xd4), 230 NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), 231 NAND_ECCREQ(8, 512), 232 SPINAND_INFO_OP_VARIANTS(&read_cache_variants, 233 &write_cache_variants, 234 &update_cache_variants), 235 SPINAND_HAS_QE_BIT, 236 SPINAND_ECCINFO(&fm25s01bi3_ooblayout, 237 fm25s01bi3_ecc_get_status)), 238 }; 239 240 static const struct spinand_manufacturer_ops fmsh_spinand_manuf_ops = { 241 }; 242 243 const struct spinand_manufacturer fmsh_spinand_manufacturer = { 244 .id = SPINAND_MFR_FMSH, 245 .name = "Fudan Micro", 246 .chips = fmsh_spinand_table, 247 .nchips = ARRAY_SIZE(fmsh_spinand_table), 248 .ops = &fmsh_spinand_manuf_ops, 249 }; 250