developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
| 2 | /* |
| 3 | * Copyright (C) 2020 MediaTek Inc. All Rights Reserved. |
| 4 | * |
| 5 | * Author: Weijie Gao <weijie.gao@mediatek.com> |
| 6 | */ |
| 7 | |
| 8 | #include "mtk-snand-def.h" |
| 9 | |
| 10 | /* NFI registers */ |
| 11 | #define NFI_CNFG 0x000 |
| 12 | #define CNFG_OP_MODE_S 12 |
| 13 | #define CNFG_OP_MODE_CUST 6 |
| 14 | #define CNFG_OP_MODE_PROGRAM 3 |
| 15 | #define CNFG_AUTO_FMT_EN BIT(9) |
| 16 | #define CNFG_HW_ECC_EN BIT(8) |
| 17 | #define CNFG_DMA_BURST_EN BIT(2) |
| 18 | #define CNFG_READ_MODE BIT(1) |
| 19 | #define CNFG_DMA_MODE BIT(0) |
| 20 | |
| 21 | #define NFI_PAGEFMT 0x0004 |
| 22 | #define NFI_SPARE_SIZE_LS_S 16 |
| 23 | #define NFI_FDM_ECC_NUM_S 12 |
| 24 | #define NFI_FDM_NUM_S 8 |
| 25 | #define NFI_SPARE_SIZE_S 4 |
| 26 | #define NFI_SEC_SEL_512 BIT(2) |
| 27 | #define NFI_PAGE_SIZE_S 0 |
| 28 | #define NFI_PAGE_SIZE_512_2K 0 |
| 29 | #define NFI_PAGE_SIZE_2K_4K 1 |
| 30 | #define NFI_PAGE_SIZE_4K_8K 2 |
| 31 | #define NFI_PAGE_SIZE_8K_16K 3 |
| 32 | |
| 33 | #define NFI_CON 0x008 |
| 34 | #define CON_SEC_NUM_S 12 |
| 35 | #define CON_BWR BIT(9) |
| 36 | #define CON_BRD BIT(8) |
| 37 | #define CON_NFI_RST BIT(1) |
| 38 | #define CON_FIFO_FLUSH BIT(0) |
| 39 | |
| 40 | #define NFI_INTR_EN 0x010 |
| 41 | #define NFI_INTR_STA 0x014 |
| 42 | #define NFI_IRQ_INTR_EN BIT(31) |
| 43 | #define NFI_IRQ_CUS_READ BIT(8) |
| 44 | #define NFI_IRQ_CUS_PG BIT(7) |
| 45 | |
| 46 | #define NFI_CMD 0x020 |
| 47 | |
| 48 | #define NFI_STRDATA 0x040 |
| 49 | #define STR_DATA BIT(0) |
| 50 | |
| 51 | #define NFI_STA 0x060 |
| 52 | #define NFI_NAND_FSM GENMASK(28, 24) |
| 53 | #define NFI_FSM GENMASK(19, 16) |
| 54 | #define READ_EMPTY BIT(12) |
| 55 | |
| 56 | #define NFI_FIFOSTA 0x064 |
| 57 | #define FIFO_WR_REMAIN_S 8 |
| 58 | #define FIFO_RD_REMAIN_S 0 |
| 59 | |
developer | ae50ce9 | 2021-05-18 19:08:57 +0800 | [diff] [blame] | 60 | #define NFI_ADDRCNTR 0x070 |
| 61 | #define SEC_CNTR GENMASK(16, 12) |
developer | ab41583 | 2021-05-26 09:49:32 +0800 | [diff] [blame^] | 62 | #define SEC_CNTR_S 12 |
| 63 | #define NFI_SEC_CNTR(val) (((val) & SEC_CNTR) >> SEC_CNTR_S) |
developer | ae50ce9 | 2021-05-18 19:08:57 +0800 | [diff] [blame] | 64 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 65 | #define NFI_STRADDR 0x080 |
| 66 | |
developer | ae50ce9 | 2021-05-18 19:08:57 +0800 | [diff] [blame] | 67 | #define NFI_BYTELEN 0x084 |
developer | ab41583 | 2021-05-26 09:49:32 +0800 | [diff] [blame^] | 68 | #define BUS_SEC_CNTR(val) (((val) & SEC_CNTR) >> SEC_CNTR_S) |
developer | ae50ce9 | 2021-05-18 19:08:57 +0800 | [diff] [blame] | 69 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 70 | #define NFI_FDM0L 0x0a0 |
| 71 | #define NFI_FDM0M 0x0a4 |
| 72 | #define NFI_FDML(n) (NFI_FDM0L + (n) * 8) |
| 73 | #define NFI_FDMM(n) (NFI_FDM0M + (n) * 8) |
| 74 | |
| 75 | #define NFI_DEBUG_CON1 0x220 |
| 76 | #define WBUF_EN BIT(2) |
| 77 | |
| 78 | #define NFI_MASTERSTA 0x224 |
| 79 | #define MAS_ADDR GENMASK(11, 9) |
| 80 | #define MAS_RD GENMASK(8, 6) |
| 81 | #define MAS_WR GENMASK(5, 3) |
| 82 | #define MAS_RDDLY GENMASK(2, 0) |
| 83 | #define NFI_MASTERSTA_MASK_7622 (MAS_ADDR | MAS_RD | MAS_WR | MAS_RDDLY) |
| 84 | #define AHB_BUS_BUSY BIT(1) |
| 85 | #define BUS_BUSY BIT(0) |
| 86 | #define NFI_MASTERSTA_MASK_7986 (AHB_BUS_BUSY | BUS_BUSY) |
| 87 | |
| 88 | /* SNFI registers */ |
| 89 | #define SNF_MAC_CTL 0x500 |
| 90 | #define MAC_XIO_SEL BIT(4) |
| 91 | #define SF_MAC_EN BIT(3) |
| 92 | #define SF_TRIG BIT(2) |
| 93 | #define WIP_READY BIT(1) |
| 94 | #define WIP BIT(0) |
| 95 | |
| 96 | #define SNF_MAC_OUTL 0x504 |
| 97 | #define SNF_MAC_INL 0x508 |
| 98 | |
| 99 | #define SNF_RD_CTL2 0x510 |
| 100 | #define DATA_READ_DUMMY_S 8 |
| 101 | #define DATA_READ_CMD_S 0 |
| 102 | |
| 103 | #define SNF_RD_CTL3 0x514 |
| 104 | |
| 105 | #define SNF_PG_CTL1 0x524 |
| 106 | #define PG_LOAD_CMD_S 8 |
| 107 | |
| 108 | #define SNF_PG_CTL2 0x528 |
| 109 | |
| 110 | #define SNF_MISC_CTL 0x538 |
| 111 | #define SW_RST BIT(28) |
| 112 | #define FIFO_RD_LTC_S 25 |
| 113 | #define PG_LOAD_X4_EN BIT(20) |
| 114 | #define DATA_READ_MODE_S 16 |
| 115 | #define DATA_READ_MODE GENMASK(18, 16) |
| 116 | #define DATA_READ_MODE_X1 0 |
| 117 | #define DATA_READ_MODE_X2 1 |
| 118 | #define DATA_READ_MODE_X4 2 |
| 119 | #define DATA_READ_MODE_DUAL 5 |
| 120 | #define DATA_READ_MODE_QUAD 6 |
| 121 | #define PG_LOAD_CUSTOM_EN BIT(7) |
| 122 | #define DATARD_CUSTOM_EN BIT(6) |
| 123 | #define CS_DESELECT_CYC_S 0 |
| 124 | |
| 125 | #define SNF_MISC_CTL2 0x53c |
| 126 | #define PROGRAM_LOAD_BYTE_NUM_S 16 |
| 127 | #define READ_DATA_BYTE_NUM_S 11 |
| 128 | |
| 129 | #define SNF_DLY_CTL3 0x548 |
| 130 | #define SFCK_SAM_DLY_S 0 |
| 131 | |
| 132 | #define SNF_STA_CTL1 0x550 |
| 133 | #define CUS_PG_DONE BIT(28) |
| 134 | #define CUS_READ_DONE BIT(27) |
| 135 | #define SPI_STATE_S 0 |
| 136 | #define SPI_STATE GENMASK(3, 0) |
| 137 | |
| 138 | #define SNF_CFG 0x55c |
| 139 | #define SPI_MODE BIT(0) |
| 140 | |
| 141 | #define SNF_GPRAM 0x800 |
| 142 | #define SNF_GPRAM_SIZE 0xa0 |
| 143 | |
| 144 | #define SNFI_POLL_INTERVAL 1000000 |
| 145 | |
| 146 | static const uint8_t mt7622_spare_sizes[] = { 16, 26, 27, 28 }; |
| 147 | |
| 148 | static const uint8_t mt7986_spare_sizes[] = { |
| 149 | 16, 26, 27, 28, 32, 36, 40, 44, 48, 49, 50, 51, 52, 62, 61, 63, 64, |
| 150 | 67, 74 |
| 151 | }; |
| 152 | |
| 153 | static const struct mtk_snand_soc_data mtk_snand_socs[__SNAND_SOC_MAX] = { |
| 154 | [SNAND_SOC_MT7622] = { |
| 155 | .sector_size = 512, |
| 156 | .max_sectors = 8, |
| 157 | .fdm_size = 8, |
| 158 | .fdm_ecc_size = 1, |
| 159 | .fifo_size = 32, |
| 160 | .bbm_swap = false, |
| 161 | .empty_page_check = false, |
| 162 | .mastersta_mask = NFI_MASTERSTA_MASK_7622, |
| 163 | .spare_sizes = mt7622_spare_sizes, |
| 164 | .num_spare_size = ARRAY_SIZE(mt7622_spare_sizes) |
| 165 | }, |
| 166 | [SNAND_SOC_MT7629] = { |
| 167 | .sector_size = 512, |
| 168 | .max_sectors = 8, |
| 169 | .fdm_size = 8, |
| 170 | .fdm_ecc_size = 1, |
| 171 | .fifo_size = 32, |
| 172 | .bbm_swap = true, |
| 173 | .empty_page_check = false, |
| 174 | .mastersta_mask = NFI_MASTERSTA_MASK_7622, |
| 175 | .spare_sizes = mt7622_spare_sizes, |
| 176 | .num_spare_size = ARRAY_SIZE(mt7622_spare_sizes) |
| 177 | }, |
| 178 | [SNAND_SOC_MT7986] = { |
| 179 | .sector_size = 1024, |
| 180 | .max_sectors = 16, |
| 181 | .fdm_size = 8, |
| 182 | .fdm_ecc_size = 1, |
| 183 | .fifo_size = 64, |
| 184 | .bbm_swap = true, |
| 185 | .empty_page_check = true, |
| 186 | .mastersta_mask = NFI_MASTERSTA_MASK_7986, |
| 187 | .spare_sizes = mt7986_spare_sizes, |
| 188 | .num_spare_size = ARRAY_SIZE(mt7986_spare_sizes) |
| 189 | }, |
| 190 | }; |
| 191 | |
| 192 | static inline uint32_t nfi_read32(struct mtk_snand *snf, uint32_t reg) |
| 193 | { |
| 194 | return readl(snf->nfi_base + reg); |
| 195 | } |
| 196 | |
| 197 | static inline void nfi_write32(struct mtk_snand *snf, uint32_t reg, |
| 198 | uint32_t val) |
| 199 | { |
| 200 | writel(val, snf->nfi_base + reg); |
| 201 | } |
| 202 | |
| 203 | static inline void nfi_write16(struct mtk_snand *snf, uint32_t reg, |
| 204 | uint16_t val) |
| 205 | { |
| 206 | writew(val, snf->nfi_base + reg); |
| 207 | } |
| 208 | |
| 209 | static inline void nfi_rmw32(struct mtk_snand *snf, uint32_t reg, uint32_t clr, |
| 210 | uint32_t set) |
| 211 | { |
| 212 | uint32_t val; |
| 213 | |
| 214 | val = readl(snf->nfi_base + reg); |
| 215 | val &= ~clr; |
| 216 | val |= set; |
| 217 | writel(val, snf->nfi_base + reg); |
| 218 | } |
| 219 | |
| 220 | static void nfi_write_data(struct mtk_snand *snf, uint32_t reg, |
| 221 | const uint8_t *data, uint32_t len) |
| 222 | { |
| 223 | uint32_t i, val = 0, es = sizeof(uint32_t); |
| 224 | |
| 225 | for (i = reg; i < reg + len; i++) { |
| 226 | val |= ((uint32_t)*data++) << (8 * (i % es)); |
| 227 | |
| 228 | if (i % es == es - 1 || i == reg + len - 1) { |
| 229 | nfi_write32(snf, i & ~(es - 1), val); |
| 230 | val = 0; |
| 231 | } |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | static void nfi_read_data(struct mtk_snand *snf, uint32_t reg, uint8_t *data, |
| 236 | uint32_t len) |
| 237 | { |
| 238 | uint32_t i, val = 0, es = sizeof(uint32_t); |
| 239 | |
| 240 | for (i = reg; i < reg + len; i++) { |
| 241 | if (i == reg || i % es == 0) |
| 242 | val = nfi_read32(snf, i & ~(es - 1)); |
| 243 | |
| 244 | *data++ = (uint8_t)(val >> (8 * (i % es))); |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | static inline void do_bm_swap(uint8_t *bm1, uint8_t *bm2) |
| 249 | { |
| 250 | uint8_t tmp = *bm1; |
| 251 | *bm1 = *bm2; |
| 252 | *bm2 = tmp; |
| 253 | } |
| 254 | |
| 255 | static void mtk_snand_bm_swap_raw(struct mtk_snand *snf) |
| 256 | { |
| 257 | uint32_t fdm_bbm_pos; |
| 258 | |
| 259 | if (!snf->nfi_soc->bbm_swap || snf->ecc_steps == 1) |
| 260 | return; |
| 261 | |
| 262 | fdm_bbm_pos = (snf->ecc_steps - 1) * snf->raw_sector_size + |
| 263 | snf->nfi_soc->sector_size; |
| 264 | do_bm_swap(&snf->page_cache[fdm_bbm_pos], |
| 265 | &snf->page_cache[snf->writesize]); |
| 266 | } |
| 267 | |
| 268 | static void mtk_snand_bm_swap(struct mtk_snand *snf) |
| 269 | { |
| 270 | uint32_t buf_bbm_pos, fdm_bbm_pos; |
| 271 | |
| 272 | if (!snf->nfi_soc->bbm_swap || snf->ecc_steps == 1) |
| 273 | return; |
| 274 | |
| 275 | buf_bbm_pos = snf->writesize - |
| 276 | (snf->ecc_steps - 1) * snf->spare_per_sector; |
| 277 | fdm_bbm_pos = snf->writesize + |
| 278 | (snf->ecc_steps - 1) * snf->nfi_soc->fdm_size; |
| 279 | do_bm_swap(&snf->page_cache[fdm_bbm_pos], |
| 280 | &snf->page_cache[buf_bbm_pos]); |
| 281 | } |
| 282 | |
| 283 | static void mtk_snand_fdm_bm_swap_raw(struct mtk_snand *snf) |
| 284 | { |
| 285 | uint32_t fdm_bbm_pos1, fdm_bbm_pos2; |
| 286 | |
| 287 | if (!snf->nfi_soc->bbm_swap || snf->ecc_steps == 1) |
| 288 | return; |
| 289 | |
| 290 | fdm_bbm_pos1 = snf->nfi_soc->sector_size; |
| 291 | fdm_bbm_pos2 = (snf->ecc_steps - 1) * snf->raw_sector_size + |
| 292 | snf->nfi_soc->sector_size; |
| 293 | do_bm_swap(&snf->page_cache[fdm_bbm_pos1], |
| 294 | &snf->page_cache[fdm_bbm_pos2]); |
| 295 | } |
| 296 | |
| 297 | static void mtk_snand_fdm_bm_swap(struct mtk_snand *snf) |
| 298 | { |
| 299 | uint32_t fdm_bbm_pos1, fdm_bbm_pos2; |
| 300 | |
| 301 | if (!snf->nfi_soc->bbm_swap || snf->ecc_steps == 1) |
| 302 | return; |
| 303 | |
| 304 | fdm_bbm_pos1 = snf->writesize; |
| 305 | fdm_bbm_pos2 = snf->writesize + |
| 306 | (snf->ecc_steps - 1) * snf->nfi_soc->fdm_size; |
| 307 | do_bm_swap(&snf->page_cache[fdm_bbm_pos1], |
| 308 | &snf->page_cache[fdm_bbm_pos2]); |
| 309 | } |
| 310 | |
| 311 | static int mtk_nfi_reset(struct mtk_snand *snf) |
| 312 | { |
| 313 | uint32_t val, fifo_mask; |
| 314 | int ret; |
| 315 | |
| 316 | nfi_write32(snf, NFI_CON, CON_FIFO_FLUSH | CON_NFI_RST); |
| 317 | |
| 318 | ret = read16_poll_timeout(snf->nfi_base + NFI_MASTERSTA, val, |
| 319 | !(val & snf->nfi_soc->mastersta_mask), 0, |
| 320 | SNFI_POLL_INTERVAL); |
| 321 | if (ret) { |
| 322 | snand_log_nfi(snf->pdev, |
| 323 | "NFI master is still busy after reset\n"); |
| 324 | return ret; |
| 325 | } |
| 326 | |
| 327 | ret = read32_poll_timeout(snf->nfi_base + NFI_STA, val, |
| 328 | !(val & (NFI_FSM | NFI_NAND_FSM)), 0, |
| 329 | SNFI_POLL_INTERVAL); |
| 330 | if (ret) { |
| 331 | snand_log_nfi(snf->pdev, "Failed to reset NFI\n"); |
| 332 | return ret; |
| 333 | } |
| 334 | |
| 335 | fifo_mask = ((snf->nfi_soc->fifo_size - 1) << FIFO_RD_REMAIN_S) | |
| 336 | ((snf->nfi_soc->fifo_size - 1) << FIFO_WR_REMAIN_S); |
| 337 | ret = read16_poll_timeout(snf->nfi_base + NFI_FIFOSTA, val, |
| 338 | !(val & fifo_mask), 0, SNFI_POLL_INTERVAL); |
| 339 | if (ret) { |
| 340 | snand_log_nfi(snf->pdev, "NFI FIFOs are not empty\n"); |
| 341 | return ret; |
| 342 | } |
| 343 | |
| 344 | return 0; |
| 345 | } |
| 346 | |
| 347 | static int mtk_snand_mac_reset(struct mtk_snand *snf) |
| 348 | { |
| 349 | int ret; |
| 350 | uint32_t val; |
| 351 | |
| 352 | nfi_rmw32(snf, SNF_MISC_CTL, 0, SW_RST); |
| 353 | |
| 354 | ret = read32_poll_timeout(snf->nfi_base + SNF_STA_CTL1, val, |
| 355 | !(val & SPI_STATE), 0, SNFI_POLL_INTERVAL); |
| 356 | if (ret) |
| 357 | snand_log_snfi(snf->pdev, "Failed to reset SNFI MAC\n"); |
| 358 | |
| 359 | nfi_write32(snf, SNF_MISC_CTL, (2 << FIFO_RD_LTC_S) | |
| 360 | (10 << CS_DESELECT_CYC_S)); |
| 361 | |
| 362 | return ret; |
| 363 | } |
| 364 | |
| 365 | static int mtk_snand_mac_trigger(struct mtk_snand *snf, uint32_t outlen, |
| 366 | uint32_t inlen) |
| 367 | { |
| 368 | int ret; |
| 369 | uint32_t val; |
| 370 | |
| 371 | nfi_write32(snf, SNF_MAC_CTL, SF_MAC_EN); |
| 372 | nfi_write32(snf, SNF_MAC_OUTL, outlen); |
| 373 | nfi_write32(snf, SNF_MAC_INL, inlen); |
| 374 | |
| 375 | nfi_write32(snf, SNF_MAC_CTL, SF_MAC_EN | SF_TRIG); |
| 376 | |
| 377 | ret = read32_poll_timeout(snf->nfi_base + SNF_MAC_CTL, val, |
| 378 | val & WIP_READY, 0, SNFI_POLL_INTERVAL); |
| 379 | if (ret) { |
| 380 | snand_log_snfi(snf->pdev, "Timed out waiting for WIP_READY\n"); |
| 381 | goto cleanup; |
| 382 | } |
| 383 | |
| 384 | ret = read32_poll_timeout(snf->nfi_base + SNF_MAC_CTL, val, |
| 385 | !(val & WIP), 0, SNFI_POLL_INTERVAL); |
| 386 | if (ret) { |
| 387 | snand_log_snfi(snf->pdev, |
| 388 | "Timed out waiting for WIP cleared\n"); |
| 389 | } |
| 390 | |
| 391 | cleanup: |
| 392 | nfi_write32(snf, SNF_MAC_CTL, 0); |
| 393 | |
| 394 | return ret; |
| 395 | } |
| 396 | |
| 397 | int mtk_snand_mac_io(struct mtk_snand *snf, const uint8_t *out, uint32_t outlen, |
| 398 | uint8_t *in, uint32_t inlen) |
| 399 | { |
| 400 | int ret; |
| 401 | |
| 402 | if (outlen + inlen > SNF_GPRAM_SIZE) |
| 403 | return -EINVAL; |
| 404 | |
| 405 | mtk_snand_mac_reset(snf); |
| 406 | |
| 407 | nfi_write_data(snf, SNF_GPRAM, out, outlen); |
| 408 | |
| 409 | ret = mtk_snand_mac_trigger(snf, outlen, inlen); |
| 410 | if (ret) |
| 411 | return ret; |
| 412 | |
| 413 | if (!inlen) |
| 414 | return 0; |
| 415 | |
| 416 | nfi_read_data(snf, SNF_GPRAM + outlen, in, inlen); |
| 417 | |
| 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | static int mtk_snand_get_feature(struct mtk_snand *snf, uint32_t addr) |
| 422 | { |
| 423 | uint8_t op[2], val; |
| 424 | int ret; |
| 425 | |
| 426 | op[0] = SNAND_CMD_GET_FEATURE; |
| 427 | op[1] = (uint8_t)addr; |
| 428 | |
| 429 | ret = mtk_snand_mac_io(snf, op, sizeof(op), &val, 1); |
| 430 | if (ret) |
| 431 | return ret; |
| 432 | |
| 433 | return val; |
| 434 | } |
| 435 | |
| 436 | int mtk_snand_set_feature(struct mtk_snand *snf, uint32_t addr, uint32_t val) |
| 437 | { |
| 438 | uint8_t op[3]; |
| 439 | |
| 440 | op[0] = SNAND_CMD_SET_FEATURE; |
| 441 | op[1] = (uint8_t)addr; |
| 442 | op[2] = (uint8_t)val; |
| 443 | |
| 444 | return mtk_snand_mac_io(snf, op, sizeof(op), NULL, 0); |
| 445 | } |
| 446 | |
| 447 | static int mtk_snand_poll_status(struct mtk_snand *snf, uint32_t wait_us) |
| 448 | { |
| 449 | int val; |
| 450 | mtk_snand_time_t time_start, tmo; |
| 451 | |
| 452 | time_start = timer_get_ticks(); |
| 453 | tmo = timer_time_to_tick(wait_us); |
| 454 | |
| 455 | do { |
| 456 | val = mtk_snand_get_feature(snf, SNAND_FEATURE_STATUS_ADDR); |
| 457 | if (!(val & SNAND_STATUS_OIP)) |
| 458 | return val & (SNAND_STATUS_ERASE_FAIL | |
| 459 | SNAND_STATUS_PROGRAM_FAIL); |
| 460 | } while (!timer_is_timeout(time_start, tmo)); |
| 461 | |
| 462 | return -ETIMEDOUT; |
| 463 | } |
| 464 | |
| 465 | int mtk_snand_chip_reset(struct mtk_snand *snf) |
| 466 | { |
| 467 | uint8_t op = SNAND_CMD_RESET; |
| 468 | int ret; |
| 469 | |
| 470 | ret = mtk_snand_mac_io(snf, &op, 1, NULL, 0); |
| 471 | if (ret) |
| 472 | return ret; |
| 473 | |
| 474 | ret = mtk_snand_poll_status(snf, SNFI_POLL_INTERVAL); |
| 475 | if (ret < 0) |
| 476 | return ret; |
| 477 | |
| 478 | return 0; |
| 479 | } |
| 480 | |
| 481 | static int mtk_snand_config_feature(struct mtk_snand *snf, uint8_t clr, |
| 482 | uint8_t set) |
| 483 | { |
| 484 | int val, newval; |
| 485 | int ret; |
| 486 | |
| 487 | val = mtk_snand_get_feature(snf, SNAND_FEATURE_CONFIG_ADDR); |
| 488 | if (val < 0) { |
| 489 | snand_log_chip(snf->pdev, |
| 490 | "Failed to get configuration feature\n"); |
| 491 | return val; |
| 492 | } |
| 493 | |
| 494 | newval = (val & (~clr)) | set; |
| 495 | |
| 496 | if (newval == val) |
| 497 | return 0; |
| 498 | |
| 499 | ret = mtk_snand_set_feature(snf, SNAND_FEATURE_CONFIG_ADDR, |
| 500 | (uint8_t)newval); |
| 501 | if (val < 0) { |
| 502 | snand_log_chip(snf->pdev, |
| 503 | "Failed to set configuration feature\n"); |
| 504 | return ret; |
| 505 | } |
| 506 | |
| 507 | val = mtk_snand_get_feature(snf, SNAND_FEATURE_CONFIG_ADDR); |
| 508 | if (val < 0) { |
| 509 | snand_log_chip(snf->pdev, |
| 510 | "Failed to get configuration feature\n"); |
| 511 | return val; |
| 512 | } |
| 513 | |
| 514 | if (newval != val) |
| 515 | return -ENOTSUPP; |
| 516 | |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | static int mtk_snand_ondie_ecc_control(struct mtk_snand *snf, bool enable) |
| 521 | { |
| 522 | int ret; |
| 523 | |
| 524 | if (enable) |
| 525 | ret = mtk_snand_config_feature(snf, 0, SNAND_FEATURE_ECC_EN); |
| 526 | else |
| 527 | ret = mtk_snand_config_feature(snf, SNAND_FEATURE_ECC_EN, 0); |
| 528 | |
| 529 | if (ret) { |
| 530 | snand_log_chip(snf->pdev, "Failed to %s On-Die ECC engine\n", |
| 531 | enable ? "enable" : "disable"); |
| 532 | } |
| 533 | |
| 534 | return ret; |
| 535 | } |
| 536 | |
| 537 | static int mtk_snand_qspi_control(struct mtk_snand *snf, bool enable) |
| 538 | { |
| 539 | int ret; |
| 540 | |
| 541 | if (enable) { |
| 542 | ret = mtk_snand_config_feature(snf, 0, |
| 543 | SNAND_FEATURE_QUAD_ENABLE); |
| 544 | } else { |
| 545 | ret = mtk_snand_config_feature(snf, |
| 546 | SNAND_FEATURE_QUAD_ENABLE, 0); |
| 547 | } |
| 548 | |
| 549 | if (ret) { |
| 550 | snand_log_chip(snf->pdev, "Failed to %s quad spi\n", |
| 551 | enable ? "enable" : "disable"); |
| 552 | } |
| 553 | |
| 554 | return ret; |
| 555 | } |
| 556 | |
| 557 | static int mtk_snand_unlock(struct mtk_snand *snf) |
| 558 | { |
| 559 | int ret; |
| 560 | |
| 561 | ret = mtk_snand_set_feature(snf, SNAND_FEATURE_PROTECT_ADDR, 0); |
| 562 | if (ret) { |
| 563 | snand_log_chip(snf->pdev, "Failed to set protection feature\n"); |
| 564 | return ret; |
| 565 | } |
| 566 | |
| 567 | return 0; |
| 568 | } |
| 569 | |
| 570 | static int mtk_snand_write_enable(struct mtk_snand *snf) |
| 571 | { |
| 572 | uint8_t op = SNAND_CMD_WRITE_ENABLE; |
| 573 | int ret, val; |
| 574 | |
| 575 | ret = mtk_snand_mac_io(snf, &op, 1, NULL, 0); |
| 576 | if (ret) |
| 577 | return ret; |
| 578 | |
| 579 | val = mtk_snand_get_feature(snf, SNAND_FEATURE_STATUS_ADDR); |
| 580 | if (val < 0) |
| 581 | return ret; |
| 582 | |
| 583 | if (val & SNAND_STATUS_WEL) |
| 584 | return 0; |
| 585 | |
| 586 | snand_log_chip(snf->pdev, "Failed to send write-enable command\n"); |
| 587 | |
| 588 | return -ENOTSUPP; |
| 589 | } |
| 590 | |
| 591 | static int mtk_snand_select_die(struct mtk_snand *snf, uint32_t dieidx) |
| 592 | { |
| 593 | if (!snf->select_die) |
| 594 | return 0; |
| 595 | |
| 596 | return snf->select_die(snf, dieidx); |
| 597 | } |
| 598 | |
| 599 | static uint64_t mtk_snand_select_die_address(struct mtk_snand *snf, |
| 600 | uint64_t addr) |
| 601 | { |
| 602 | uint32_t dieidx; |
| 603 | |
| 604 | if (!snf->select_die) |
| 605 | return addr; |
| 606 | |
| 607 | dieidx = addr >> snf->die_shift; |
| 608 | |
| 609 | mtk_snand_select_die(snf, dieidx); |
| 610 | |
| 611 | return addr & snf->die_mask; |
| 612 | } |
| 613 | |
| 614 | static uint32_t mtk_snand_get_plane_address(struct mtk_snand *snf, |
| 615 | uint32_t page) |
| 616 | { |
| 617 | uint32_t pages_per_block; |
| 618 | |
| 619 | pages_per_block = 1 << (snf->erasesize_shift - snf->writesize_shift); |
| 620 | |
| 621 | if (page & pages_per_block) |
| 622 | return 1 << (snf->writesize_shift + 1); |
| 623 | |
| 624 | return 0; |
| 625 | } |
| 626 | |
| 627 | static int mtk_snand_page_op(struct mtk_snand *snf, uint32_t page, uint8_t cmd) |
| 628 | { |
| 629 | uint8_t op[4]; |
| 630 | |
| 631 | op[0] = cmd; |
| 632 | op[1] = (page >> 16) & 0xff; |
| 633 | op[2] = (page >> 8) & 0xff; |
| 634 | op[3] = page & 0xff; |
| 635 | |
| 636 | return mtk_snand_mac_io(snf, op, sizeof(op), NULL, 0); |
| 637 | } |
| 638 | |
| 639 | static void mtk_snand_read_fdm(struct mtk_snand *snf, uint8_t *buf) |
| 640 | { |
| 641 | uint32_t vall, valm; |
| 642 | uint8_t *oobptr = buf; |
| 643 | int i, j; |
| 644 | |
| 645 | for (i = 0; i < snf->ecc_steps; i++) { |
| 646 | vall = nfi_read32(snf, NFI_FDML(i)); |
| 647 | valm = nfi_read32(snf, NFI_FDMM(i)); |
| 648 | |
| 649 | for (j = 0; j < snf->nfi_soc->fdm_size; j++) |
| 650 | oobptr[j] = (j >= 4 ? valm : vall) >> ((j % 4) * 8); |
| 651 | |
| 652 | oobptr += snf->nfi_soc->fdm_size; |
| 653 | } |
| 654 | } |
| 655 | |
developer | 4da1bed | 2021-05-08 17:30:37 +0800 | [diff] [blame] | 656 | static int mtk_snand_read_ecc_parity(struct mtk_snand *snf, uint32_t page, |
| 657 | uint32_t sect, uint8_t *oob) |
| 658 | { |
| 659 | uint32_t ecc_bytes = snf->spare_per_sector - snf->nfi_soc->fdm_size; |
| 660 | uint32_t coladdr, raw_offs, offs; |
| 661 | uint8_t op[4]; |
| 662 | |
| 663 | if (sizeof(op) + ecc_bytes > SNF_GPRAM_SIZE) { |
| 664 | snand_log_snfi(snf->pdev, |
| 665 | "ECC parity size does not fit the GPRAM\n"); |
| 666 | return -ENOTSUPP; |
| 667 | } |
| 668 | |
| 669 | raw_offs = sect * snf->raw_sector_size + snf->nfi_soc->sector_size + |
| 670 | snf->nfi_soc->fdm_size; |
| 671 | offs = snf->ecc_steps * snf->nfi_soc->fdm_size + sect * ecc_bytes; |
| 672 | |
| 673 | /* Column address with plane bit */ |
| 674 | coladdr = raw_offs | mtk_snand_get_plane_address(snf, page); |
| 675 | |
| 676 | op[0] = SNAND_CMD_READ_FROM_CACHE; |
| 677 | op[1] = (coladdr >> 8) & 0xff; |
| 678 | op[2] = coladdr & 0xff; |
| 679 | op[3] = 0; |
| 680 | |
| 681 | return mtk_snand_mac_io(snf, op, sizeof(op), oob + offs, ecc_bytes); |
| 682 | } |
| 683 | |
| 684 | static int mtk_snand_check_ecc_result(struct mtk_snand *snf, uint32_t page) |
| 685 | { |
| 686 | uint8_t *oob = snf->page_cache + snf->writesize; |
| 687 | int i, rc, ret = 0, max_bitflips = 0; |
| 688 | |
| 689 | for (i = 0; i < snf->ecc_steps; i++) { |
| 690 | if (snf->sect_bf[i] >= 0) { |
| 691 | if (snf->sect_bf[i] > max_bitflips) |
| 692 | max_bitflips = snf->sect_bf[i]; |
| 693 | continue; |
| 694 | } |
| 695 | |
| 696 | rc = mtk_snand_read_ecc_parity(snf, page, i, oob); |
| 697 | if (rc) |
| 698 | return rc; |
| 699 | |
| 700 | rc = mtk_ecc_fixup_empty_sector(snf, i); |
| 701 | if (rc < 0) { |
| 702 | ret = -EBADMSG; |
| 703 | |
| 704 | snand_log_ecc(snf->pdev, |
| 705 | "Uncorrectable bitflips in page %u sect %u\n", |
| 706 | page, i); |
developer | 5136a3f | 2021-05-20 10:58:54 +0800 | [diff] [blame] | 707 | } else if (rc) { |
developer | 4da1bed | 2021-05-08 17:30:37 +0800 | [diff] [blame] | 708 | snf->sect_bf[i] = rc; |
| 709 | |
| 710 | if (snf->sect_bf[i] > max_bitflips) |
| 711 | max_bitflips = snf->sect_bf[i]; |
| 712 | |
| 713 | snand_log_ecc(snf->pdev, |
| 714 | "%u bitflip%s corrected in page %u sect %u\n", |
| 715 | rc, rc > 1 ? "s" : "", page, i); |
developer | 5136a3f | 2021-05-20 10:58:54 +0800 | [diff] [blame] | 716 | } else { |
| 717 | snf->sect_bf[i] = 0; |
developer | 4da1bed | 2021-05-08 17:30:37 +0800 | [diff] [blame] | 718 | } |
| 719 | } |
| 720 | |
| 721 | return ret ? ret : max_bitflips; |
| 722 | } |
| 723 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 724 | static int mtk_snand_read_cache(struct mtk_snand *snf, uint32_t page, bool raw) |
| 725 | { |
developer | ae50ce9 | 2021-05-18 19:08:57 +0800 | [diff] [blame] | 726 | uint32_t coladdr, rwbytes, mode, len, val; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 727 | uintptr_t dma_addr; |
| 728 | int ret; |
| 729 | |
| 730 | /* Column address with plane bit */ |
| 731 | coladdr = mtk_snand_get_plane_address(snf, page); |
| 732 | |
| 733 | mtk_snand_mac_reset(snf); |
| 734 | mtk_nfi_reset(snf); |
| 735 | |
| 736 | /* Command and dummy cycles */ |
| 737 | nfi_write32(snf, SNF_RD_CTL2, |
| 738 | ((uint32_t)snf->dummy_rfc << DATA_READ_DUMMY_S) | |
| 739 | (snf->opcode_rfc << DATA_READ_CMD_S)); |
| 740 | |
| 741 | /* Column address */ |
| 742 | nfi_write32(snf, SNF_RD_CTL3, coladdr); |
| 743 | |
| 744 | /* Set read mode */ |
| 745 | mode = (uint32_t)snf->mode_rfc << DATA_READ_MODE_S; |
| 746 | nfi_rmw32(snf, SNF_MISC_CTL, DATA_READ_MODE, mode | DATARD_CUSTOM_EN); |
| 747 | |
| 748 | /* Set bytes to read */ |
| 749 | rwbytes = snf->ecc_steps * snf->raw_sector_size; |
| 750 | nfi_write32(snf, SNF_MISC_CTL2, (rwbytes << PROGRAM_LOAD_BYTE_NUM_S) | |
| 751 | rwbytes); |
| 752 | |
| 753 | /* NFI read prepare */ |
| 754 | mode = raw ? 0 : CNFG_HW_ECC_EN | CNFG_AUTO_FMT_EN; |
| 755 | nfi_write16(snf, NFI_CNFG, (CNFG_OP_MODE_CUST << CNFG_OP_MODE_S) | |
| 756 | CNFG_DMA_BURST_EN | CNFG_READ_MODE | CNFG_DMA_MODE | mode); |
| 757 | |
| 758 | nfi_write32(snf, NFI_CON, (snf->ecc_steps << CON_SEC_NUM_S)); |
| 759 | |
| 760 | /* Prepare for DMA read */ |
| 761 | len = snf->writesize + snf->oobsize; |
| 762 | ret = dma_mem_map(snf->pdev, snf->page_cache, &dma_addr, len, false); |
| 763 | if (ret) { |
| 764 | snand_log_nfi(snf->pdev, |
| 765 | "DMA map from device failed with %d\n", ret); |
| 766 | return ret; |
| 767 | } |
| 768 | |
| 769 | nfi_write32(snf, NFI_STRADDR, (uint32_t)dma_addr); |
| 770 | |
| 771 | if (!raw) |
| 772 | mtk_snand_ecc_decoder_start(snf); |
| 773 | |
| 774 | /* Prepare for custom read interrupt */ |
| 775 | nfi_write32(snf, NFI_INTR_EN, NFI_IRQ_INTR_EN | NFI_IRQ_CUS_READ); |
| 776 | irq_completion_init(snf->pdev); |
| 777 | |
| 778 | /* Trigger NFI into custom mode */ |
| 779 | nfi_write16(snf, NFI_CMD, NFI_CMD_DUMMY_READ); |
| 780 | |
| 781 | /* Start DMA read */ |
| 782 | nfi_rmw32(snf, NFI_CON, 0, CON_BRD); |
| 783 | nfi_write16(snf, NFI_STRDATA, STR_DATA); |
| 784 | |
| 785 | /* Wait for operation finished */ |
| 786 | ret = irq_completion_wait(snf->pdev, snf->nfi_base + SNF_STA_CTL1, |
| 787 | CUS_READ_DONE, SNFI_POLL_INTERVAL); |
| 788 | if (ret) { |
| 789 | snand_log_nfi(snf->pdev, |
| 790 | "DMA timed out for reading from cache\n"); |
| 791 | goto cleanup; |
| 792 | } |
| 793 | |
developer | ae50ce9 | 2021-05-18 19:08:57 +0800 | [diff] [blame] | 794 | /* Wait for BUS_SEC_CNTR returning expected value */ |
| 795 | ret = read32_poll_timeout(snf->nfi_base + NFI_BYTELEN, val, |
| 796 | BUS_SEC_CNTR(val) >= snf->ecc_steps, |
| 797 | 0, SNFI_POLL_INTERVAL); |
| 798 | if (ret) { |
| 799 | snand_log_nfi(snf->pdev, |
| 800 | "Timed out waiting for BUS_SEC_CNTR\n"); |
| 801 | goto cleanup; |
| 802 | } |
| 803 | |
| 804 | /* Wait for bus becoming idle */ |
| 805 | ret = read32_poll_timeout(snf->nfi_base + NFI_MASTERSTA, val, |
| 806 | !(val & snf->nfi_soc->mastersta_mask), |
| 807 | 0, SNFI_POLL_INTERVAL); |
| 808 | if (ret) { |
| 809 | snand_log_nfi(snf->pdev, |
| 810 | "Timed out waiting for bus becoming idle\n"); |
| 811 | goto cleanup; |
| 812 | } |
| 813 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 814 | if (!raw) { |
| 815 | ret = mtk_ecc_wait_decoder_done(snf); |
| 816 | if (ret) |
| 817 | goto cleanup; |
| 818 | |
| 819 | mtk_snand_read_fdm(snf, snf->page_cache + snf->writesize); |
| 820 | |
developer | 4da1bed | 2021-05-08 17:30:37 +0800 | [diff] [blame] | 821 | mtk_ecc_check_decode_error(snf); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 822 | mtk_snand_ecc_decoder_stop(snf); |
developer | 4da1bed | 2021-05-08 17:30:37 +0800 | [diff] [blame] | 823 | |
| 824 | ret = mtk_snand_check_ecc_result(snf, page); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | cleanup: |
| 828 | /* DMA cleanup */ |
| 829 | dma_mem_unmap(snf->pdev, dma_addr, len, false); |
| 830 | |
| 831 | /* Stop read */ |
| 832 | nfi_write32(snf, NFI_CON, 0); |
developer | 4b9635a | 2021-05-18 14:22:39 +0800 | [diff] [blame] | 833 | nfi_write16(snf, NFI_CNFG, 0); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 834 | |
| 835 | /* Clear SNF done flag */ |
| 836 | nfi_rmw32(snf, SNF_STA_CTL1, 0, CUS_READ_DONE); |
| 837 | nfi_write32(snf, SNF_STA_CTL1, 0); |
| 838 | |
| 839 | /* Disable interrupt */ |
| 840 | nfi_read32(snf, NFI_INTR_STA); |
| 841 | nfi_write32(snf, NFI_INTR_EN, 0); |
| 842 | |
| 843 | nfi_rmw32(snf, SNF_MISC_CTL, DATARD_CUSTOM_EN, 0); |
| 844 | |
| 845 | return ret; |
| 846 | } |
| 847 | |
| 848 | static void mtk_snand_from_raw_page(struct mtk_snand *snf, void *buf, void *oob) |
| 849 | { |
| 850 | uint32_t i, ecc_bytes = snf->spare_per_sector - snf->nfi_soc->fdm_size; |
| 851 | uint8_t *eccptr = oob + snf->ecc_steps * snf->nfi_soc->fdm_size; |
| 852 | uint8_t *bufptr = buf, *oobptr = oob, *raw_sector; |
| 853 | |
| 854 | for (i = 0; i < snf->ecc_steps; i++) { |
| 855 | raw_sector = snf->page_cache + i * snf->raw_sector_size; |
| 856 | |
| 857 | if (buf) { |
| 858 | memcpy(bufptr, raw_sector, snf->nfi_soc->sector_size); |
| 859 | bufptr += snf->nfi_soc->sector_size; |
| 860 | } |
| 861 | |
| 862 | raw_sector += snf->nfi_soc->sector_size; |
| 863 | |
| 864 | if (oob) { |
| 865 | memcpy(oobptr, raw_sector, snf->nfi_soc->fdm_size); |
| 866 | oobptr += snf->nfi_soc->fdm_size; |
| 867 | raw_sector += snf->nfi_soc->fdm_size; |
| 868 | |
| 869 | memcpy(eccptr, raw_sector, ecc_bytes); |
| 870 | eccptr += ecc_bytes; |
| 871 | } |
| 872 | } |
| 873 | } |
| 874 | |
| 875 | static int mtk_snand_do_read_page(struct mtk_snand *snf, uint64_t addr, |
| 876 | void *buf, void *oob, bool raw, bool format) |
| 877 | { |
| 878 | uint64_t die_addr; |
| 879 | uint32_t page; |
| 880 | int ret; |
| 881 | |
| 882 | die_addr = mtk_snand_select_die_address(snf, addr); |
| 883 | page = die_addr >> snf->writesize_shift; |
| 884 | |
| 885 | ret = mtk_snand_page_op(snf, page, SNAND_CMD_READ_TO_CACHE); |
| 886 | if (ret) |
| 887 | return ret; |
| 888 | |
| 889 | ret = mtk_snand_poll_status(snf, SNFI_POLL_INTERVAL); |
| 890 | if (ret < 0) { |
| 891 | snand_log_chip(snf->pdev, "Read to cache command timed out\n"); |
| 892 | return ret; |
| 893 | } |
| 894 | |
| 895 | ret = mtk_snand_read_cache(snf, page, raw); |
| 896 | if (ret < 0 && ret != -EBADMSG) |
| 897 | return ret; |
| 898 | |
| 899 | if (raw) { |
| 900 | if (format) { |
| 901 | mtk_snand_bm_swap_raw(snf); |
| 902 | mtk_snand_fdm_bm_swap_raw(snf); |
| 903 | mtk_snand_from_raw_page(snf, buf, oob); |
| 904 | } else { |
| 905 | if (buf) |
| 906 | memcpy(buf, snf->page_cache, snf->writesize); |
| 907 | |
| 908 | if (oob) { |
| 909 | memset(oob, 0xff, snf->oobsize); |
| 910 | memcpy(oob, snf->page_cache + snf->writesize, |
| 911 | snf->ecc_steps * snf->spare_per_sector); |
| 912 | } |
| 913 | } |
| 914 | } else { |
| 915 | mtk_snand_bm_swap(snf); |
| 916 | mtk_snand_fdm_bm_swap(snf); |
| 917 | |
| 918 | if (buf) |
| 919 | memcpy(buf, snf->page_cache, snf->writesize); |
| 920 | |
| 921 | if (oob) { |
| 922 | memset(oob, 0xff, snf->oobsize); |
| 923 | memcpy(oob, snf->page_cache + snf->writesize, |
| 924 | snf->ecc_steps * snf->nfi_soc->fdm_size); |
| 925 | } |
| 926 | } |
| 927 | |
| 928 | return ret; |
| 929 | } |
| 930 | |
| 931 | int mtk_snand_read_page(struct mtk_snand *snf, uint64_t addr, void *buf, |
| 932 | void *oob, bool raw) |
| 933 | { |
| 934 | if (!snf || (!buf && !oob)) |
| 935 | return -EINVAL; |
| 936 | |
| 937 | if (addr >= snf->size) |
| 938 | return -EINVAL; |
| 939 | |
| 940 | return mtk_snand_do_read_page(snf, addr, buf, oob, raw, true); |
| 941 | } |
| 942 | |
| 943 | static void mtk_snand_write_fdm(struct mtk_snand *snf, const uint8_t *buf) |
| 944 | { |
| 945 | uint32_t vall, valm, fdm_size = snf->nfi_soc->fdm_size; |
| 946 | const uint8_t *oobptr = buf; |
| 947 | int i, j; |
| 948 | |
| 949 | for (i = 0; i < snf->ecc_steps; i++) { |
| 950 | vall = 0; |
| 951 | valm = 0; |
| 952 | |
| 953 | for (j = 0; j < 8; j++) { |
| 954 | if (j < 4) |
| 955 | vall |= (j < fdm_size ? oobptr[j] : 0xff) |
| 956 | << (j * 8); |
| 957 | else |
| 958 | valm |= (j < fdm_size ? oobptr[j] : 0xff) |
| 959 | << ((j - 4) * 8); |
| 960 | } |
| 961 | |
| 962 | nfi_write32(snf, NFI_FDML(i), vall); |
| 963 | nfi_write32(snf, NFI_FDMM(i), valm); |
| 964 | |
| 965 | oobptr += fdm_size; |
| 966 | } |
| 967 | } |
| 968 | |
| 969 | static int mtk_snand_program_load(struct mtk_snand *snf, uint32_t page, |
| 970 | bool raw) |
| 971 | { |
developer | ae50ce9 | 2021-05-18 19:08:57 +0800 | [diff] [blame] | 972 | uint32_t coladdr, rwbytes, mode, len, val; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 973 | uintptr_t dma_addr; |
| 974 | int ret; |
| 975 | |
| 976 | /* Column address with plane bit */ |
| 977 | coladdr = mtk_snand_get_plane_address(snf, page); |
| 978 | |
| 979 | mtk_snand_mac_reset(snf); |
| 980 | mtk_nfi_reset(snf); |
| 981 | |
| 982 | /* Write FDM registers if necessary */ |
| 983 | if (!raw) |
| 984 | mtk_snand_write_fdm(snf, snf->page_cache + snf->writesize); |
| 985 | |
| 986 | /* Command */ |
| 987 | nfi_write32(snf, SNF_PG_CTL1, (snf->opcode_pl << PG_LOAD_CMD_S)); |
| 988 | |
| 989 | /* Column address */ |
| 990 | nfi_write32(snf, SNF_PG_CTL2, coladdr); |
| 991 | |
| 992 | /* Set write mode */ |
| 993 | mode = snf->mode_pl ? PG_LOAD_X4_EN : 0; |
| 994 | nfi_rmw32(snf, SNF_MISC_CTL, PG_LOAD_X4_EN, mode | PG_LOAD_CUSTOM_EN); |
| 995 | |
| 996 | /* Set bytes to write */ |
| 997 | rwbytes = snf->ecc_steps * snf->raw_sector_size; |
| 998 | nfi_write32(snf, SNF_MISC_CTL2, (rwbytes << PROGRAM_LOAD_BYTE_NUM_S) | |
| 999 | rwbytes); |
| 1000 | |
| 1001 | /* NFI write prepare */ |
| 1002 | mode = raw ? 0 : CNFG_HW_ECC_EN | CNFG_AUTO_FMT_EN; |
| 1003 | nfi_write16(snf, NFI_CNFG, (CNFG_OP_MODE_PROGRAM << CNFG_OP_MODE_S) | |
| 1004 | CNFG_DMA_BURST_EN | CNFG_DMA_MODE | mode); |
| 1005 | |
| 1006 | nfi_write32(snf, NFI_CON, (snf->ecc_steps << CON_SEC_NUM_S)); |
| 1007 | |
| 1008 | /* Prepare for DMA write */ |
| 1009 | len = snf->writesize + snf->oobsize; |
| 1010 | ret = dma_mem_map(snf->pdev, snf->page_cache, &dma_addr, len, true); |
| 1011 | if (ret) { |
| 1012 | snand_log_nfi(snf->pdev, |
| 1013 | "DMA map to device failed with %d\n", ret); |
| 1014 | return ret; |
| 1015 | } |
| 1016 | |
| 1017 | nfi_write32(snf, NFI_STRADDR, (uint32_t)dma_addr); |
| 1018 | |
| 1019 | if (!raw) |
| 1020 | mtk_snand_ecc_encoder_start(snf); |
| 1021 | |
| 1022 | /* Prepare for custom write interrupt */ |
| 1023 | nfi_write32(snf, NFI_INTR_EN, NFI_IRQ_INTR_EN | NFI_IRQ_CUS_PG); |
| 1024 | irq_completion_init(snf->pdev); |
| 1025 | |
| 1026 | /* Trigger NFI into custom mode */ |
| 1027 | nfi_write16(snf, NFI_CMD, NFI_CMD_DUMMY_WRITE); |
| 1028 | |
| 1029 | /* Start DMA write */ |
| 1030 | nfi_rmw32(snf, NFI_CON, 0, CON_BWR); |
| 1031 | nfi_write16(snf, NFI_STRDATA, STR_DATA); |
| 1032 | |
| 1033 | /* Wait for operation finished */ |
| 1034 | ret = irq_completion_wait(snf->pdev, snf->nfi_base + SNF_STA_CTL1, |
| 1035 | CUS_PG_DONE, SNFI_POLL_INTERVAL); |
| 1036 | if (ret) { |
| 1037 | snand_log_nfi(snf->pdev, |
| 1038 | "DMA timed out for program load\n"); |
| 1039 | goto cleanup; |
| 1040 | } |
| 1041 | |
developer | ab41583 | 2021-05-26 09:49:32 +0800 | [diff] [blame^] | 1042 | /* Wait for NFI_SEC_CNTR returning expected value */ |
| 1043 | ret = read32_poll_timeout(snf->nfi_base + NFI_ADDRCNTR, val, |
| 1044 | NFI_SEC_CNTR(val) >= snf->ecc_steps, |
developer | ae50ce9 | 2021-05-18 19:08:57 +0800 | [diff] [blame] | 1045 | 0, SNFI_POLL_INTERVAL); |
| 1046 | if (ret) { |
| 1047 | snand_log_nfi(snf->pdev, |
| 1048 | "Timed out waiting for BUS_SEC_CNTR\n"); |
| 1049 | goto cleanup; |
| 1050 | } |
| 1051 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1052 | if (!raw) |
| 1053 | mtk_snand_ecc_encoder_stop(snf); |
| 1054 | |
| 1055 | cleanup: |
| 1056 | /* DMA cleanup */ |
| 1057 | dma_mem_unmap(snf->pdev, dma_addr, len, true); |
| 1058 | |
| 1059 | /* Stop write */ |
developer | 4b9635a | 2021-05-18 14:22:39 +0800 | [diff] [blame] | 1060 | nfi_write32(snf, NFI_CON, 0); |
| 1061 | nfi_write16(snf, NFI_CNFG, 0); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1062 | |
| 1063 | /* Clear SNF done flag */ |
| 1064 | nfi_rmw32(snf, SNF_STA_CTL1, 0, CUS_PG_DONE); |
| 1065 | nfi_write32(snf, SNF_STA_CTL1, 0); |
| 1066 | |
| 1067 | /* Disable interrupt */ |
| 1068 | nfi_read32(snf, NFI_INTR_STA); |
| 1069 | nfi_write32(snf, NFI_INTR_EN, 0); |
| 1070 | |
| 1071 | nfi_rmw32(snf, SNF_MISC_CTL, PG_LOAD_CUSTOM_EN, 0); |
| 1072 | |
| 1073 | return ret; |
| 1074 | } |
| 1075 | |
| 1076 | static void mtk_snand_to_raw_page(struct mtk_snand *snf, |
| 1077 | const void *buf, const void *oob, |
| 1078 | bool empty_ecc) |
| 1079 | { |
| 1080 | uint32_t i, ecc_bytes = snf->spare_per_sector - snf->nfi_soc->fdm_size; |
| 1081 | const uint8_t *eccptr = oob + snf->ecc_steps * snf->nfi_soc->fdm_size; |
| 1082 | const uint8_t *bufptr = buf, *oobptr = oob; |
| 1083 | uint8_t *raw_sector; |
| 1084 | |
| 1085 | memset(snf->page_cache, 0xff, snf->writesize + snf->oobsize); |
| 1086 | for (i = 0; i < snf->ecc_steps; i++) { |
| 1087 | raw_sector = snf->page_cache + i * snf->raw_sector_size; |
| 1088 | |
| 1089 | if (buf) { |
| 1090 | memcpy(raw_sector, bufptr, snf->nfi_soc->sector_size); |
| 1091 | bufptr += snf->nfi_soc->sector_size; |
| 1092 | } |
| 1093 | |
| 1094 | raw_sector += snf->nfi_soc->sector_size; |
| 1095 | |
| 1096 | if (oob) { |
| 1097 | memcpy(raw_sector, oobptr, snf->nfi_soc->fdm_size); |
| 1098 | oobptr += snf->nfi_soc->fdm_size; |
| 1099 | raw_sector += snf->nfi_soc->fdm_size; |
| 1100 | |
| 1101 | if (empty_ecc) |
| 1102 | memset(raw_sector, 0xff, ecc_bytes); |
| 1103 | else |
| 1104 | memcpy(raw_sector, eccptr, ecc_bytes); |
| 1105 | eccptr += ecc_bytes; |
| 1106 | } |
| 1107 | } |
| 1108 | } |
| 1109 | |
| 1110 | static bool mtk_snand_is_empty_page(struct mtk_snand *snf, const void *buf, |
| 1111 | const void *oob) |
| 1112 | { |
| 1113 | const uint8_t *p = buf; |
| 1114 | uint32_t i, j; |
| 1115 | |
| 1116 | if (buf) { |
| 1117 | for (i = 0; i < snf->writesize; i++) { |
| 1118 | if (p[i] != 0xff) |
| 1119 | return false; |
| 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | if (oob) { |
| 1124 | for (j = 0; j < snf->ecc_steps; j++) { |
| 1125 | p = oob + j * snf->nfi_soc->fdm_size; |
| 1126 | |
| 1127 | for (i = 0; i < snf->nfi_soc->fdm_ecc_size; i++) { |
| 1128 | if (p[i] != 0xff) |
| 1129 | return false; |
| 1130 | } |
| 1131 | } |
| 1132 | } |
| 1133 | |
| 1134 | return true; |
| 1135 | } |
| 1136 | |
| 1137 | static int mtk_snand_do_write_page(struct mtk_snand *snf, uint64_t addr, |
| 1138 | const void *buf, const void *oob, |
| 1139 | bool raw, bool format) |
| 1140 | { |
| 1141 | uint64_t die_addr; |
| 1142 | bool empty_ecc = false; |
| 1143 | uint32_t page; |
| 1144 | int ret; |
| 1145 | |
| 1146 | die_addr = mtk_snand_select_die_address(snf, addr); |
| 1147 | page = die_addr >> snf->writesize_shift; |
| 1148 | |
| 1149 | if (!raw && mtk_snand_is_empty_page(snf, buf, oob)) { |
| 1150 | /* |
| 1151 | * If the data in the page to be ecc-ed is full 0xff, |
| 1152 | * change to raw write mode |
| 1153 | */ |
| 1154 | raw = true; |
| 1155 | format = true; |
| 1156 | |
| 1157 | /* fill ecc parity code region with 0xff */ |
| 1158 | empty_ecc = true; |
| 1159 | } |
| 1160 | |
| 1161 | if (raw) { |
| 1162 | if (format) { |
| 1163 | mtk_snand_to_raw_page(snf, buf, oob, empty_ecc); |
| 1164 | mtk_snand_fdm_bm_swap_raw(snf); |
| 1165 | mtk_snand_bm_swap_raw(snf); |
| 1166 | } else { |
| 1167 | memset(snf->page_cache, 0xff, |
| 1168 | snf->writesize + snf->oobsize); |
| 1169 | |
| 1170 | if (buf) |
| 1171 | memcpy(snf->page_cache, buf, snf->writesize); |
| 1172 | |
| 1173 | if (oob) { |
| 1174 | memcpy(snf->page_cache + snf->writesize, oob, |
| 1175 | snf->ecc_steps * snf->spare_per_sector); |
| 1176 | } |
| 1177 | } |
| 1178 | } else { |
| 1179 | memset(snf->page_cache, 0xff, snf->writesize + snf->oobsize); |
| 1180 | if (buf) |
| 1181 | memcpy(snf->page_cache, buf, snf->writesize); |
| 1182 | |
| 1183 | if (oob) { |
| 1184 | memcpy(snf->page_cache + snf->writesize, oob, |
| 1185 | snf->ecc_steps * snf->nfi_soc->fdm_size); |
| 1186 | } |
| 1187 | |
| 1188 | mtk_snand_fdm_bm_swap(snf); |
| 1189 | mtk_snand_bm_swap(snf); |
| 1190 | } |
| 1191 | |
| 1192 | ret = mtk_snand_write_enable(snf); |
| 1193 | if (ret) |
| 1194 | return ret; |
| 1195 | |
| 1196 | ret = mtk_snand_program_load(snf, page, raw); |
| 1197 | if (ret) |
| 1198 | return ret; |
| 1199 | |
| 1200 | ret = mtk_snand_page_op(snf, page, SNAND_CMD_PROGRAM_EXECUTE); |
| 1201 | if (ret) |
| 1202 | return ret; |
| 1203 | |
| 1204 | ret = mtk_snand_poll_status(snf, SNFI_POLL_INTERVAL); |
| 1205 | if (ret < 0) { |
| 1206 | snand_log_chip(snf->pdev, |
| 1207 | "Page program command timed out on page %u\n", |
| 1208 | page); |
| 1209 | return ret; |
| 1210 | } |
| 1211 | |
| 1212 | if (ret & SNAND_STATUS_PROGRAM_FAIL) { |
| 1213 | snand_log_chip(snf->pdev, |
| 1214 | "Page program failed on page %u\n", page); |
| 1215 | return -EIO; |
| 1216 | } |
| 1217 | |
| 1218 | return 0; |
| 1219 | } |
| 1220 | |
| 1221 | int mtk_snand_write_page(struct mtk_snand *snf, uint64_t addr, const void *buf, |
| 1222 | const void *oob, bool raw) |
| 1223 | { |
| 1224 | if (!snf || (!buf && !oob)) |
| 1225 | return -EINVAL; |
| 1226 | |
| 1227 | if (addr >= snf->size) |
| 1228 | return -EINVAL; |
| 1229 | |
| 1230 | return mtk_snand_do_write_page(snf, addr, buf, oob, raw, true); |
| 1231 | } |
| 1232 | |
| 1233 | int mtk_snand_erase_block(struct mtk_snand *snf, uint64_t addr) |
| 1234 | { |
| 1235 | uint64_t die_addr; |
| 1236 | uint32_t page, block; |
| 1237 | int ret; |
| 1238 | |
| 1239 | if (!snf) |
| 1240 | return -EINVAL; |
| 1241 | |
| 1242 | if (addr >= snf->size) |
| 1243 | return -EINVAL; |
| 1244 | |
| 1245 | die_addr = mtk_snand_select_die_address(snf, addr); |
| 1246 | block = die_addr >> snf->erasesize_shift; |
| 1247 | page = block << (snf->erasesize_shift - snf->writesize_shift); |
| 1248 | |
| 1249 | ret = mtk_snand_write_enable(snf); |
| 1250 | if (ret) |
| 1251 | return ret; |
| 1252 | |
| 1253 | ret = mtk_snand_page_op(snf, page, SNAND_CMD_BLOCK_ERASE); |
| 1254 | if (ret) |
| 1255 | return ret; |
| 1256 | |
| 1257 | ret = mtk_snand_poll_status(snf, SNFI_POLL_INTERVAL); |
| 1258 | if (ret < 0) { |
| 1259 | snand_log_chip(snf->pdev, |
| 1260 | "Block erase command timed out on block %u\n", |
| 1261 | block); |
| 1262 | return ret; |
| 1263 | } |
| 1264 | |
| 1265 | if (ret & SNAND_STATUS_ERASE_FAIL) { |
| 1266 | snand_log_chip(snf->pdev, |
| 1267 | "Block erase failed on block %u\n", block); |
| 1268 | return -EIO; |
| 1269 | } |
| 1270 | |
| 1271 | return 0; |
| 1272 | } |
| 1273 | |
| 1274 | static int mtk_snand_block_isbad_std(struct mtk_snand *snf, uint64_t addr) |
| 1275 | { |
| 1276 | int ret; |
| 1277 | |
| 1278 | ret = mtk_snand_do_read_page(snf, addr, NULL, snf->buf_cache, true, |
| 1279 | false); |
| 1280 | if (ret && ret != -EBADMSG) |
| 1281 | return ret; |
| 1282 | |
| 1283 | return snf->buf_cache[0] != 0xff; |
| 1284 | } |
| 1285 | |
| 1286 | static int mtk_snand_block_isbad_mtk(struct mtk_snand *snf, uint64_t addr) |
| 1287 | { |
| 1288 | int ret; |
| 1289 | |
| 1290 | ret = mtk_snand_do_read_page(snf, addr, NULL, snf->buf_cache, true, |
| 1291 | true); |
| 1292 | if (ret && ret != -EBADMSG) |
| 1293 | return ret; |
| 1294 | |
| 1295 | return snf->buf_cache[0] != 0xff; |
| 1296 | } |
| 1297 | |
| 1298 | int mtk_snand_block_isbad(struct mtk_snand *snf, uint64_t addr) |
| 1299 | { |
| 1300 | if (!snf) |
| 1301 | return -EINVAL; |
| 1302 | |
| 1303 | if (addr >= snf->size) |
| 1304 | return -EINVAL; |
| 1305 | |
| 1306 | addr &= ~snf->erasesize_mask; |
| 1307 | |
| 1308 | if (snf->nfi_soc->bbm_swap) |
| 1309 | return mtk_snand_block_isbad_std(snf, addr); |
| 1310 | |
| 1311 | return mtk_snand_block_isbad_mtk(snf, addr); |
| 1312 | } |
| 1313 | |
| 1314 | static int mtk_snand_block_markbad_std(struct mtk_snand *snf, uint64_t addr) |
| 1315 | { |
| 1316 | /* Standard BBM position */ |
| 1317 | memset(snf->buf_cache, 0xff, snf->oobsize); |
| 1318 | snf->buf_cache[0] = 0; |
| 1319 | |
| 1320 | return mtk_snand_do_write_page(snf, addr, NULL, snf->buf_cache, true, |
| 1321 | false); |
| 1322 | } |
| 1323 | |
| 1324 | static int mtk_snand_block_markbad_mtk(struct mtk_snand *snf, uint64_t addr) |
| 1325 | { |
| 1326 | /* Write the whole page with zeros */ |
| 1327 | memset(snf->buf_cache, 0, snf->writesize + snf->oobsize); |
| 1328 | |
| 1329 | return mtk_snand_do_write_page(snf, addr, snf->buf_cache, |
| 1330 | snf->buf_cache + snf->writesize, true, |
| 1331 | true); |
| 1332 | } |
| 1333 | |
| 1334 | int mtk_snand_block_markbad(struct mtk_snand *snf, uint64_t addr) |
| 1335 | { |
| 1336 | if (!snf) |
| 1337 | return -EINVAL; |
| 1338 | |
| 1339 | if (addr >= snf->size) |
| 1340 | return -EINVAL; |
| 1341 | |
| 1342 | addr &= ~snf->erasesize_mask; |
| 1343 | |
| 1344 | if (snf->nfi_soc->bbm_swap) |
| 1345 | return mtk_snand_block_markbad_std(snf, addr); |
| 1346 | |
| 1347 | return mtk_snand_block_markbad_mtk(snf, addr); |
| 1348 | } |
| 1349 | |
| 1350 | int mtk_snand_fill_oob(struct mtk_snand *snf, uint8_t *oobraw, |
| 1351 | const uint8_t *oobbuf, size_t ooblen) |
| 1352 | { |
| 1353 | size_t len = ooblen, sect_fdm_len; |
| 1354 | const uint8_t *oob = oobbuf; |
| 1355 | uint32_t step = 0; |
| 1356 | |
| 1357 | if (!snf || !oobraw || !oob) |
| 1358 | return -EINVAL; |
| 1359 | |
| 1360 | while (len && step < snf->ecc_steps) { |
| 1361 | sect_fdm_len = snf->nfi_soc->fdm_size - 1; |
| 1362 | if (sect_fdm_len > len) |
| 1363 | sect_fdm_len = len; |
| 1364 | |
| 1365 | memcpy(oobraw + step * snf->nfi_soc->fdm_size + 1, oob, |
| 1366 | sect_fdm_len); |
| 1367 | |
| 1368 | len -= sect_fdm_len; |
| 1369 | oob += sect_fdm_len; |
| 1370 | step++; |
| 1371 | } |
| 1372 | |
| 1373 | return len; |
| 1374 | } |
| 1375 | |
| 1376 | int mtk_snand_transfer_oob(struct mtk_snand *snf, uint8_t *oobbuf, |
| 1377 | size_t ooblen, const uint8_t *oobraw) |
| 1378 | { |
| 1379 | size_t len = ooblen, sect_fdm_len; |
| 1380 | uint8_t *oob = oobbuf; |
| 1381 | uint32_t step = 0; |
| 1382 | |
| 1383 | if (!snf || !oobraw || !oob) |
| 1384 | return -EINVAL; |
| 1385 | |
| 1386 | while (len && step < snf->ecc_steps) { |
| 1387 | sect_fdm_len = snf->nfi_soc->fdm_size - 1; |
| 1388 | if (sect_fdm_len > len) |
| 1389 | sect_fdm_len = len; |
| 1390 | |
| 1391 | memcpy(oob, oobraw + step * snf->nfi_soc->fdm_size + 1, |
| 1392 | sect_fdm_len); |
| 1393 | |
| 1394 | len -= sect_fdm_len; |
| 1395 | oob += sect_fdm_len; |
| 1396 | step++; |
| 1397 | } |
| 1398 | |
| 1399 | return len; |
| 1400 | } |
| 1401 | |
| 1402 | int mtk_snand_read_page_auto_oob(struct mtk_snand *snf, uint64_t addr, |
| 1403 | void *buf, void *oob, size_t ooblen, |
| 1404 | size_t *actualooblen, bool raw) |
| 1405 | { |
| 1406 | int ret, oobremain; |
| 1407 | |
| 1408 | if (!snf) |
| 1409 | return -EINVAL; |
| 1410 | |
| 1411 | if (!oob) |
| 1412 | return mtk_snand_read_page(snf, addr, buf, NULL, raw); |
| 1413 | |
| 1414 | ret = mtk_snand_read_page(snf, addr, buf, snf->buf_cache, raw); |
| 1415 | if (ret && ret != -EBADMSG) { |
| 1416 | if (actualooblen) |
| 1417 | *actualooblen = 0; |
| 1418 | return ret; |
| 1419 | } |
| 1420 | |
| 1421 | oobremain = mtk_snand_transfer_oob(snf, oob, ooblen, snf->buf_cache); |
| 1422 | if (actualooblen) |
| 1423 | *actualooblen = ooblen - oobremain; |
| 1424 | |
| 1425 | return ret; |
| 1426 | } |
| 1427 | |
| 1428 | int mtk_snand_write_page_auto_oob(struct mtk_snand *snf, uint64_t addr, |
| 1429 | const void *buf, const void *oob, |
| 1430 | size_t ooblen, size_t *actualooblen, bool raw) |
| 1431 | { |
| 1432 | int oobremain; |
| 1433 | |
| 1434 | if (!snf) |
| 1435 | return -EINVAL; |
| 1436 | |
| 1437 | if (!oob) |
| 1438 | return mtk_snand_write_page(snf, addr, buf, NULL, raw); |
| 1439 | |
| 1440 | memset(snf->buf_cache, 0xff, snf->oobsize); |
| 1441 | oobremain = mtk_snand_fill_oob(snf, snf->buf_cache, oob, ooblen); |
| 1442 | if (actualooblen) |
| 1443 | *actualooblen = ooblen - oobremain; |
| 1444 | |
| 1445 | return mtk_snand_write_page(snf, addr, buf, snf->buf_cache, raw); |
| 1446 | } |
| 1447 | |
| 1448 | int mtk_snand_get_chip_info(struct mtk_snand *snf, |
| 1449 | struct mtk_snand_chip_info *info) |
| 1450 | { |
| 1451 | if (!snf || !info) |
| 1452 | return -EINVAL; |
| 1453 | |
| 1454 | info->model = snf->model; |
| 1455 | info->chipsize = snf->size; |
| 1456 | info->blocksize = snf->erasesize; |
| 1457 | info->pagesize = snf->writesize; |
| 1458 | info->sparesize = snf->oobsize; |
| 1459 | info->spare_per_sector = snf->spare_per_sector; |
| 1460 | info->fdm_size = snf->nfi_soc->fdm_size; |
| 1461 | info->fdm_ecc_size = snf->nfi_soc->fdm_ecc_size; |
| 1462 | info->num_sectors = snf->ecc_steps; |
| 1463 | info->sector_size = snf->nfi_soc->sector_size; |
| 1464 | info->ecc_strength = snf->ecc_strength; |
| 1465 | info->ecc_bytes = snf->ecc_bytes; |
| 1466 | |
| 1467 | return 0; |
| 1468 | } |
| 1469 | |
| 1470 | int mtk_snand_irq_process(struct mtk_snand *snf) |
| 1471 | { |
| 1472 | uint32_t sta, ien; |
| 1473 | |
| 1474 | if (!snf) |
| 1475 | return -EINVAL; |
| 1476 | |
| 1477 | sta = nfi_read32(snf, NFI_INTR_STA); |
| 1478 | ien = nfi_read32(snf, NFI_INTR_EN); |
| 1479 | |
| 1480 | if (!(sta & ien)) |
| 1481 | return 0; |
| 1482 | |
| 1483 | nfi_write32(snf, NFI_INTR_EN, 0); |
| 1484 | irq_completion_done(snf->pdev); |
| 1485 | |
| 1486 | return 1; |
| 1487 | } |
| 1488 | |
| 1489 | static int mtk_snand_select_spare_per_sector(struct mtk_snand *snf) |
| 1490 | { |
| 1491 | uint32_t spare_per_step = snf->oobsize / snf->ecc_steps; |
| 1492 | int i, mul = 1; |
| 1493 | |
| 1494 | /* |
| 1495 | * If we're using the 1KB sector size, HW will automatically |
| 1496 | * double the spare size. So we should only use half of the value. |
| 1497 | */ |
| 1498 | if (snf->nfi_soc->sector_size == 1024) |
| 1499 | mul = 2; |
| 1500 | |
| 1501 | spare_per_step /= mul; |
| 1502 | |
| 1503 | for (i = snf->nfi_soc->num_spare_size - 1; i >= 0; i--) { |
| 1504 | if (snf->nfi_soc->spare_sizes[i] <= spare_per_step) { |
| 1505 | snf->spare_per_sector = snf->nfi_soc->spare_sizes[i]; |
| 1506 | snf->spare_per_sector *= mul; |
| 1507 | return i; |
| 1508 | } |
| 1509 | } |
| 1510 | |
| 1511 | snand_log_nfi(snf->pdev, |
| 1512 | "Page size %u+%u is not supported\n", snf->writesize, |
| 1513 | snf->oobsize); |
| 1514 | |
| 1515 | return -1; |
| 1516 | } |
| 1517 | |
| 1518 | static int mtk_snand_pagefmt_setup(struct mtk_snand *snf) |
| 1519 | { |
| 1520 | uint32_t spare_size_idx, spare_size_shift, pagesize_idx; |
| 1521 | uint32_t sector_size_512; |
| 1522 | |
| 1523 | if (snf->nfi_soc->sector_size == 512) { |
| 1524 | sector_size_512 = NFI_SEC_SEL_512; |
| 1525 | spare_size_shift = NFI_SPARE_SIZE_S; |
| 1526 | } else { |
| 1527 | sector_size_512 = 0; |
| 1528 | spare_size_shift = NFI_SPARE_SIZE_LS_S; |
| 1529 | } |
| 1530 | |
| 1531 | switch (snf->writesize) { |
| 1532 | case SZ_512: |
| 1533 | pagesize_idx = NFI_PAGE_SIZE_512_2K; |
| 1534 | break; |
| 1535 | case SZ_2K: |
| 1536 | if (snf->nfi_soc->sector_size == 512) |
| 1537 | pagesize_idx = NFI_PAGE_SIZE_2K_4K; |
| 1538 | else |
| 1539 | pagesize_idx = NFI_PAGE_SIZE_512_2K; |
| 1540 | break; |
| 1541 | case SZ_4K: |
| 1542 | if (snf->nfi_soc->sector_size == 512) |
| 1543 | pagesize_idx = NFI_PAGE_SIZE_4K_8K; |
| 1544 | else |
| 1545 | pagesize_idx = NFI_PAGE_SIZE_2K_4K; |
| 1546 | break; |
| 1547 | case SZ_8K: |
| 1548 | if (snf->nfi_soc->sector_size == 512) |
| 1549 | pagesize_idx = NFI_PAGE_SIZE_8K_16K; |
| 1550 | else |
| 1551 | pagesize_idx = NFI_PAGE_SIZE_4K_8K; |
| 1552 | break; |
| 1553 | case SZ_16K: |
| 1554 | pagesize_idx = NFI_PAGE_SIZE_8K_16K; |
| 1555 | break; |
| 1556 | default: |
| 1557 | snand_log_nfi(snf->pdev, "Page size %u is not supported\n", |
| 1558 | snf->writesize); |
| 1559 | return -ENOTSUPP; |
| 1560 | } |
| 1561 | |
| 1562 | spare_size_idx = mtk_snand_select_spare_per_sector(snf); |
| 1563 | if (unlikely(spare_size_idx < 0)) |
| 1564 | return -ENOTSUPP; |
| 1565 | |
| 1566 | snf->raw_sector_size = snf->nfi_soc->sector_size + |
| 1567 | snf->spare_per_sector; |
| 1568 | |
| 1569 | /* Setup page format */ |
| 1570 | nfi_write32(snf, NFI_PAGEFMT, |
| 1571 | (snf->nfi_soc->fdm_ecc_size << NFI_FDM_ECC_NUM_S) | |
| 1572 | (snf->nfi_soc->fdm_size << NFI_FDM_NUM_S) | |
| 1573 | (spare_size_idx << spare_size_shift) | |
| 1574 | (pagesize_idx << NFI_PAGE_SIZE_S) | |
| 1575 | sector_size_512); |
| 1576 | |
| 1577 | return 0; |
| 1578 | } |
| 1579 | |
| 1580 | static enum snand_flash_io mtk_snand_select_opcode(struct mtk_snand *snf, |
| 1581 | uint32_t snfi_caps, uint8_t *opcode, |
| 1582 | uint8_t *dummy, |
| 1583 | const struct snand_io_cap *op_cap) |
| 1584 | { |
| 1585 | uint32_t i, caps; |
| 1586 | |
| 1587 | caps = snfi_caps & op_cap->caps; |
| 1588 | |
| 1589 | i = fls(caps); |
| 1590 | if (i > 0) { |
| 1591 | *opcode = op_cap->opcodes[i - 1].opcode; |
| 1592 | if (dummy) |
| 1593 | *dummy = op_cap->opcodes[i - 1].dummy; |
| 1594 | return i - 1; |
| 1595 | } |
| 1596 | |
| 1597 | return __SNAND_IO_MAX; |
| 1598 | } |
| 1599 | |
| 1600 | static int mtk_snand_select_opcode_rfc(struct mtk_snand *snf, |
| 1601 | uint32_t snfi_caps, |
| 1602 | const struct snand_io_cap *op_cap) |
| 1603 | { |
| 1604 | enum snand_flash_io idx; |
| 1605 | |
| 1606 | static const uint8_t rfc_modes[__SNAND_IO_MAX] = { |
| 1607 | [SNAND_IO_1_1_1] = DATA_READ_MODE_X1, |
| 1608 | [SNAND_IO_1_1_2] = DATA_READ_MODE_X2, |
| 1609 | [SNAND_IO_1_2_2] = DATA_READ_MODE_DUAL, |
| 1610 | [SNAND_IO_1_1_4] = DATA_READ_MODE_X4, |
| 1611 | [SNAND_IO_1_4_4] = DATA_READ_MODE_QUAD, |
| 1612 | }; |
| 1613 | |
| 1614 | idx = mtk_snand_select_opcode(snf, snfi_caps, &snf->opcode_rfc, |
| 1615 | &snf->dummy_rfc, op_cap); |
| 1616 | if (idx >= __SNAND_IO_MAX) { |
| 1617 | snand_log_snfi(snf->pdev, |
| 1618 | "No capable opcode for read from cache\n"); |
| 1619 | return -ENOTSUPP; |
| 1620 | } |
| 1621 | |
| 1622 | snf->mode_rfc = rfc_modes[idx]; |
| 1623 | |
| 1624 | if (idx == SNAND_IO_1_1_4 || idx == SNAND_IO_1_4_4) |
| 1625 | snf->quad_spi_op = true; |
| 1626 | |
| 1627 | return 0; |
| 1628 | } |
| 1629 | |
| 1630 | static int mtk_snand_select_opcode_pl(struct mtk_snand *snf, uint32_t snfi_caps, |
| 1631 | const struct snand_io_cap *op_cap) |
| 1632 | { |
| 1633 | enum snand_flash_io idx; |
| 1634 | |
| 1635 | static const uint8_t pl_modes[__SNAND_IO_MAX] = { |
| 1636 | [SNAND_IO_1_1_1] = 0, |
| 1637 | [SNAND_IO_1_1_4] = 1, |
| 1638 | }; |
| 1639 | |
| 1640 | idx = mtk_snand_select_opcode(snf, snfi_caps, &snf->opcode_pl, |
| 1641 | NULL, op_cap); |
| 1642 | if (idx >= __SNAND_IO_MAX) { |
| 1643 | snand_log_snfi(snf->pdev, |
| 1644 | "No capable opcode for program load\n"); |
| 1645 | return -ENOTSUPP; |
| 1646 | } |
| 1647 | |
| 1648 | snf->mode_pl = pl_modes[idx]; |
| 1649 | |
| 1650 | if (idx == SNAND_IO_1_1_4) |
| 1651 | snf->quad_spi_op = true; |
| 1652 | |
| 1653 | return 0; |
| 1654 | } |
| 1655 | |
| 1656 | static int mtk_snand_setup(struct mtk_snand *snf, |
| 1657 | const struct snand_flash_info *snand_info) |
| 1658 | { |
| 1659 | const struct snand_mem_org *memorg = &snand_info->memorg; |
| 1660 | uint32_t i, msg_size, snfi_caps; |
| 1661 | int ret; |
| 1662 | |
| 1663 | /* Calculate flash memory organization */ |
| 1664 | snf->model = snand_info->model; |
| 1665 | snf->writesize = memorg->pagesize; |
| 1666 | snf->oobsize = memorg->sparesize; |
| 1667 | snf->erasesize = snf->writesize * memorg->pages_per_block; |
| 1668 | snf->die_size = (uint64_t)snf->erasesize * memorg->blocks_per_die; |
| 1669 | snf->size = snf->die_size * memorg->ndies; |
| 1670 | snf->num_dies = memorg->ndies; |
| 1671 | |
| 1672 | snf->writesize_mask = snf->writesize - 1; |
| 1673 | snf->erasesize_mask = snf->erasesize - 1; |
| 1674 | snf->die_mask = snf->die_size - 1; |
| 1675 | |
| 1676 | snf->writesize_shift = ffs(snf->writesize) - 1; |
| 1677 | snf->erasesize_shift = ffs(snf->erasesize) - 1; |
| 1678 | snf->die_shift = mtk_snand_ffs64(snf->die_size) - 1; |
| 1679 | |
| 1680 | snf->select_die = snand_info->select_die; |
| 1681 | |
| 1682 | /* Determine opcodes for read from cache/program load */ |
| 1683 | snfi_caps = SPI_IO_1_1_1 | SPI_IO_1_1_2 | SPI_IO_1_2_2; |
| 1684 | if (snf->snfi_quad_spi) |
| 1685 | snfi_caps |= SPI_IO_1_1_4 | SPI_IO_1_4_4; |
| 1686 | |
| 1687 | ret = mtk_snand_select_opcode_rfc(snf, snfi_caps, snand_info->cap_rd); |
| 1688 | if (ret) |
| 1689 | return ret; |
| 1690 | |
| 1691 | ret = mtk_snand_select_opcode_pl(snf, snfi_caps, snand_info->cap_pl); |
| 1692 | if (ret) |
| 1693 | return ret; |
| 1694 | |
| 1695 | /* ECC and page format */ |
| 1696 | snf->ecc_steps = snf->writesize / snf->nfi_soc->sector_size; |
| 1697 | if (snf->ecc_steps > snf->nfi_soc->max_sectors) { |
| 1698 | snand_log_nfi(snf->pdev, "Page size %u is not supported\n", |
| 1699 | snf->writesize); |
| 1700 | return -ENOTSUPP; |
| 1701 | } |
| 1702 | |
| 1703 | ret = mtk_snand_pagefmt_setup(snf); |
| 1704 | if (ret) |
| 1705 | return ret; |
| 1706 | |
| 1707 | msg_size = snf->nfi_soc->sector_size + snf->nfi_soc->fdm_ecc_size; |
| 1708 | ret = mtk_ecc_setup(snf, snf->nfi_base + NFI_FDM0L, |
| 1709 | snf->spare_per_sector - snf->nfi_soc->fdm_size, |
| 1710 | msg_size); |
| 1711 | if (ret) |
| 1712 | return ret; |
| 1713 | |
| 1714 | nfi_write16(snf, NFI_CNFG, 0); |
| 1715 | |
| 1716 | /* Tuning options */ |
| 1717 | nfi_write16(snf, NFI_DEBUG_CON1, WBUF_EN); |
| 1718 | nfi_write32(snf, SNF_DLY_CTL3, (40 << SFCK_SAM_DLY_S)); |
| 1719 | |
| 1720 | /* Interrupts */ |
| 1721 | nfi_read32(snf, NFI_INTR_STA); |
| 1722 | nfi_write32(snf, NFI_INTR_EN, 0); |
| 1723 | |
| 1724 | /* Clear SNF done flag */ |
| 1725 | nfi_rmw32(snf, SNF_STA_CTL1, 0, CUS_READ_DONE | CUS_PG_DONE); |
| 1726 | nfi_write32(snf, SNF_STA_CTL1, 0); |
| 1727 | |
| 1728 | /* Initialization on all dies */ |
| 1729 | for (i = 0; i < snf->num_dies; i++) { |
| 1730 | mtk_snand_select_die(snf, i); |
| 1731 | |
| 1732 | /* Disable On-Die ECC engine */ |
| 1733 | ret = mtk_snand_ondie_ecc_control(snf, false); |
| 1734 | if (ret) |
| 1735 | return ret; |
| 1736 | |
| 1737 | /* Disable block protection */ |
| 1738 | mtk_snand_unlock(snf); |
| 1739 | |
| 1740 | /* Enable/disable quad-spi */ |
| 1741 | mtk_snand_qspi_control(snf, snf->quad_spi_op); |
| 1742 | } |
| 1743 | |
| 1744 | mtk_snand_select_die(snf, 0); |
| 1745 | |
| 1746 | return 0; |
| 1747 | } |
| 1748 | |
| 1749 | static int mtk_snand_id_probe(struct mtk_snand *snf, |
| 1750 | const struct snand_flash_info **snand_info) |
| 1751 | { |
| 1752 | uint8_t id[4], op[2]; |
| 1753 | int ret; |
| 1754 | |
| 1755 | /* Read SPI-NAND JEDEC ID, OP + dummy/addr + ID */ |
| 1756 | op[0] = SNAND_CMD_READID; |
| 1757 | op[1] = 0; |
| 1758 | ret = mtk_snand_mac_io(snf, op, 2, id, sizeof(id)); |
| 1759 | if (ret) |
| 1760 | return ret; |
| 1761 | |
| 1762 | *snand_info = snand_flash_id_lookup(SNAND_ID_DYMMY, id); |
| 1763 | if (*snand_info) |
| 1764 | return 0; |
| 1765 | |
| 1766 | /* Read SPI-NAND JEDEC ID, OP + ID */ |
| 1767 | op[0] = SNAND_CMD_READID; |
| 1768 | ret = mtk_snand_mac_io(snf, op, 1, id, sizeof(id)); |
| 1769 | if (ret) |
| 1770 | return ret; |
| 1771 | |
| 1772 | *snand_info = snand_flash_id_lookup(SNAND_ID_DYMMY, id); |
| 1773 | if (*snand_info) |
| 1774 | return 0; |
| 1775 | |
| 1776 | snand_log_chip(snf->pdev, |
| 1777 | "Unrecognized SPI-NAND ID: %02x %02x %02x %02x\n", |
| 1778 | id[0], id[1], id[2], id[3]); |
| 1779 | |
| 1780 | return -EINVAL; |
| 1781 | } |
| 1782 | |
| 1783 | int mtk_snand_init(void *dev, const struct mtk_snand_platdata *pdata, |
| 1784 | struct mtk_snand **psnf) |
| 1785 | { |
| 1786 | const struct snand_flash_info *snand_info; |
developer | 4da1bed | 2021-05-08 17:30:37 +0800 | [diff] [blame] | 1787 | uint32_t rawpage_size, sect_bf_size; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1788 | struct mtk_snand tmpsnf, *snf; |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1789 | int ret; |
| 1790 | |
| 1791 | if (!pdata || !psnf) |
| 1792 | return -EINVAL; |
| 1793 | |
| 1794 | if (pdata->soc >= __SNAND_SOC_MAX) { |
| 1795 | snand_log_chip(dev, "Invalid SOC %u for MTK-SNAND\n", |
| 1796 | pdata->soc); |
| 1797 | return -EINVAL; |
| 1798 | } |
| 1799 | |
| 1800 | /* Dummy instance only for initial reset and id probe */ |
| 1801 | tmpsnf.nfi_base = pdata->nfi_base; |
| 1802 | tmpsnf.ecc_base = pdata->ecc_base; |
| 1803 | tmpsnf.soc = pdata->soc; |
| 1804 | tmpsnf.nfi_soc = &mtk_snand_socs[pdata->soc]; |
| 1805 | tmpsnf.pdev = dev; |
| 1806 | |
| 1807 | /* Switch to SNFI mode */ |
| 1808 | writel(SPI_MODE, tmpsnf.nfi_base + SNF_CFG); |
| 1809 | |
| 1810 | /* Reset SNFI & NFI */ |
| 1811 | mtk_snand_mac_reset(&tmpsnf); |
| 1812 | mtk_nfi_reset(&tmpsnf); |
| 1813 | |
| 1814 | /* Reset SPI-NAND chip */ |
| 1815 | ret = mtk_snand_chip_reset(&tmpsnf); |
| 1816 | if (ret) { |
| 1817 | snand_log_chip(dev, "Failed to reset SPI-NAND chip\n"); |
| 1818 | return ret; |
| 1819 | } |
| 1820 | |
| 1821 | /* Probe SPI-NAND flash by JEDEC ID */ |
| 1822 | ret = mtk_snand_id_probe(&tmpsnf, &snand_info); |
| 1823 | if (ret) |
| 1824 | return ret; |
| 1825 | |
| 1826 | rawpage_size = snand_info->memorg.pagesize + |
| 1827 | snand_info->memorg.sparesize; |
| 1828 | |
developer | 4da1bed | 2021-05-08 17:30:37 +0800 | [diff] [blame] | 1829 | sect_bf_size = mtk_snand_socs[pdata->soc].max_sectors * |
| 1830 | sizeof(*snf->sect_bf); |
| 1831 | |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1832 | /* Allocate memory for instance and cache */ |
developer | 4da1bed | 2021-05-08 17:30:37 +0800 | [diff] [blame] | 1833 | snf = generic_mem_alloc(dev, |
| 1834 | sizeof(*snf) + rawpage_size + sect_bf_size); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1835 | if (!snf) { |
| 1836 | snand_log_chip(dev, "Failed to allocate memory for instance\n"); |
| 1837 | return -ENOMEM; |
| 1838 | } |
| 1839 | |
developer | 4da1bed | 2021-05-08 17:30:37 +0800 | [diff] [blame] | 1840 | snf->sect_bf = (int *)((uintptr_t)snf + sizeof(*snf)); |
| 1841 | snf->buf_cache = (uint8_t *)((uintptr_t)snf->sect_bf + sect_bf_size); |
developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1842 | |
| 1843 | /* Allocate memory for DMA buffer */ |
| 1844 | snf->page_cache = dma_mem_alloc(dev, rawpage_size); |
| 1845 | if (!snf->page_cache) { |
| 1846 | generic_mem_free(dev, snf); |
| 1847 | snand_log_chip(dev, |
| 1848 | "Failed to allocate memory for DMA buffer\n"); |
| 1849 | return -ENOMEM; |
| 1850 | } |
| 1851 | |
| 1852 | /* Fill up instance */ |
| 1853 | snf->pdev = dev; |
| 1854 | snf->nfi_base = pdata->nfi_base; |
| 1855 | snf->ecc_base = pdata->ecc_base; |
| 1856 | snf->soc = pdata->soc; |
| 1857 | snf->nfi_soc = &mtk_snand_socs[pdata->soc]; |
| 1858 | snf->snfi_quad_spi = pdata->quad_spi; |
| 1859 | |
| 1860 | /* Initialize SNFI & ECC engine */ |
| 1861 | ret = mtk_snand_setup(snf, snand_info); |
| 1862 | if (ret) { |
| 1863 | dma_mem_free(dev, snf->page_cache); |
| 1864 | generic_mem_free(dev, snf); |
| 1865 | return ret; |
| 1866 | } |
| 1867 | |
| 1868 | *psnf = snf; |
| 1869 | |
| 1870 | return 0; |
| 1871 | } |
| 1872 | |
| 1873 | int mtk_snand_cleanup(struct mtk_snand *snf) |
| 1874 | { |
| 1875 | if (!snf) |
| 1876 | return 0; |
| 1877 | |
| 1878 | dma_mem_free(snf->pdev, snf->page_cache); |
| 1879 | generic_mem_free(snf->pdev, snf); |
| 1880 | |
| 1881 | return 0; |
| 1882 | } |