Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/mtd/onenand/onenand_base.c |
| 3 | * |
| 4 | * Copyright (C) 2005-2007 Samsung Electronics |
| 5 | * Kyungmin Park <kyungmin.park@samsung.com> |
| 6 | * |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 7 | * Credits: |
| 8 | * Adrian Hunter <ext-adrian.hunter@nokia.com>: |
| 9 | * auto-placement support, read-while load support, various fixes |
| 10 | * Copyright (C) Nokia Corporation, 2007 |
| 11 | * |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License version 2 as |
| 14 | * published by the Free Software Foundation. |
| 15 | */ |
| 16 | |
| 17 | #include <common.h> |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 18 | #include <linux/mtd/compat.h> |
| 19 | #include <linux/mtd/mtd.h> |
| 20 | #include <linux/mtd/onenand.h> |
| 21 | |
| 22 | #include <asm/io.h> |
| 23 | #include <asm/errno.h> |
Fathi BOUDRA | 195ccfc | 2008-08-06 10:06:20 +0200 | [diff] [blame] | 24 | #include <malloc.h> |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 25 | |
Kyungmin Park | 77e475c | 2008-03-31 10:40:36 +0900 | [diff] [blame] | 26 | /* It should access 16-bit instead of 8-bit */ |
Wolfgang Denk | d2c6fbe | 2008-05-01 21:30:16 +0200 | [diff] [blame] | 27 | static inline void *memcpy_16(void *dst, const void *src, unsigned int len) |
Kyungmin Park | 77e475c | 2008-03-31 10:40:36 +0900 | [diff] [blame] | 28 | { |
| 29 | void *ret = dst; |
| 30 | short *d = dst; |
| 31 | const short *s = src; |
| 32 | |
| 33 | len >>= 1; |
| 34 | while (len-- > 0) |
| 35 | *d++ = *s++; |
| 36 | return ret; |
| 37 | } |
| 38 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 39 | static const unsigned char ffchars[] = { |
| 40 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 41 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 16 */ |
| 42 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 43 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 32 */ |
| 44 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 45 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 48 */ |
| 46 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 47 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 64 */ |
| 48 | }; |
| 49 | |
| 50 | /** |
| 51 | * onenand_readw - [OneNAND Interface] Read OneNAND register |
| 52 | * @param addr address to read |
| 53 | * |
| 54 | * Read OneNAND register |
| 55 | */ |
| 56 | static unsigned short onenand_readw(void __iomem * addr) |
| 57 | { |
| 58 | return readw(addr); |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * onenand_writew - [OneNAND Interface] Write OneNAND register with value |
| 63 | * @param value value to write |
| 64 | * @param addr address to write |
| 65 | * |
| 66 | * Write OneNAND register with value |
| 67 | */ |
| 68 | static void onenand_writew(unsigned short value, void __iomem * addr) |
| 69 | { |
| 70 | writew(value, addr); |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * onenand_block_address - [DEFAULT] Get block address |
| 75 | * @param device the device id |
| 76 | * @param block the block |
| 77 | * @return translated block address if DDP, otherwise same |
| 78 | * |
| 79 | * Setup Start Address 1 Register (F100h) |
| 80 | */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 81 | static int onenand_block_address(struct onenand_chip *this, int block) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 82 | { |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 83 | /* Device Flash Core select, NAND Flash Block Address */ |
| 84 | if (block & this->density_mask) |
| 85 | return ONENAND_DDP_CHIP1 | (block ^ this->density_mask); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 86 | |
| 87 | return block; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * onenand_bufferram_address - [DEFAULT] Get bufferram address |
| 92 | * @param device the device id |
| 93 | * @param block the block |
| 94 | * @return set DBS value if DDP, otherwise 0 |
| 95 | * |
| 96 | * Setup Start Address 2 Register (F101h) for DDP |
| 97 | */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 98 | static int onenand_bufferram_address(struct onenand_chip *this, int block) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 99 | { |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 100 | /* Device BufferRAM Select */ |
| 101 | if (block & this->density_mask) |
| 102 | return ONENAND_DDP_CHIP1; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 103 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 104 | return ONENAND_DDP_CHIP0; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | /** |
| 108 | * onenand_page_address - [DEFAULT] Get page address |
| 109 | * @param page the page address |
| 110 | * @param sector the sector address |
| 111 | * @return combined page and sector address |
| 112 | * |
| 113 | * Setup Start Address 8 Register (F107h) |
| 114 | */ |
| 115 | static int onenand_page_address(int page, int sector) |
| 116 | { |
| 117 | /* Flash Page Address, Flash Sector Address */ |
| 118 | int fpa, fsa; |
| 119 | |
| 120 | fpa = page & ONENAND_FPA_MASK; |
| 121 | fsa = sector & ONENAND_FSA_MASK; |
| 122 | |
| 123 | return ((fpa << ONENAND_FPA_SHIFT) | fsa); |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * onenand_buffer_address - [DEFAULT] Get buffer address |
| 128 | * @param dataram1 DataRAM index |
| 129 | * @param sectors the sector address |
| 130 | * @param count the number of sectors |
| 131 | * @return the start buffer value |
| 132 | * |
| 133 | * Setup Start Buffer Register (F200h) |
| 134 | */ |
| 135 | static int onenand_buffer_address(int dataram1, int sectors, int count) |
| 136 | { |
| 137 | int bsa, bsc; |
| 138 | |
| 139 | /* BufferRAM Sector Address */ |
| 140 | bsa = sectors & ONENAND_BSA_MASK; |
| 141 | |
| 142 | if (dataram1) |
| 143 | bsa |= ONENAND_BSA_DATARAM1; /* DataRAM1 */ |
| 144 | else |
| 145 | bsa |= ONENAND_BSA_DATARAM0; /* DataRAM0 */ |
| 146 | |
| 147 | /* BufferRAM Sector Count */ |
| 148 | bsc = count & ONENAND_BSC_MASK; |
| 149 | |
| 150 | return ((bsa << ONENAND_BSA_SHIFT) | bsc); |
| 151 | } |
| 152 | |
| 153 | /** |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 154 | * onenand_get_density - [DEFAULT] Get OneNAND density |
| 155 | * @param dev_id OneNAND device ID |
| 156 | * |
| 157 | * Get OneNAND density from device ID |
| 158 | */ |
| 159 | static inline int onenand_get_density(int dev_id) |
| 160 | { |
| 161 | int density = dev_id >> ONENAND_DEVICE_DENSITY_SHIFT; |
| 162 | return (density & ONENAND_DEVICE_DENSITY_MASK); |
| 163 | } |
| 164 | |
| 165 | /** |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 166 | * onenand_command - [DEFAULT] Send command to OneNAND device |
| 167 | * @param mtd MTD device structure |
| 168 | * @param cmd the command to be sent |
| 169 | * @param addr offset to read from or write to |
| 170 | * @param len number of bytes to read or write |
| 171 | * |
| 172 | * Send command to OneNAND device. This function is used for middle/large page |
| 173 | * devices (1KB/2KB Bytes per page) |
| 174 | */ |
| 175 | static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, |
| 176 | size_t len) |
| 177 | { |
| 178 | struct onenand_chip *this = mtd->priv; |
| 179 | int value, readcmd = 0; |
| 180 | int block, page; |
| 181 | /* Now we use page size operation */ |
| 182 | int sectors = 4, count = 4; |
| 183 | |
| 184 | /* Address translation */ |
| 185 | switch (cmd) { |
| 186 | case ONENAND_CMD_UNLOCK: |
| 187 | case ONENAND_CMD_LOCK: |
| 188 | case ONENAND_CMD_LOCK_TIGHT: |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 189 | case ONENAND_CMD_UNLOCK_ALL: |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 190 | block = -1; |
| 191 | page = -1; |
| 192 | break; |
| 193 | |
| 194 | case ONENAND_CMD_ERASE: |
| 195 | case ONENAND_CMD_BUFFERRAM: |
| 196 | block = (int)(addr >> this->erase_shift); |
| 197 | page = -1; |
| 198 | break; |
| 199 | |
| 200 | default: |
| 201 | block = (int)(addr >> this->erase_shift); |
| 202 | page = (int)(addr >> this->page_shift); |
| 203 | page &= this->page_mask; |
| 204 | break; |
| 205 | } |
| 206 | |
| 207 | /* NOTE: The setting order of the registers is very important! */ |
| 208 | if (cmd == ONENAND_CMD_BUFFERRAM) { |
| 209 | /* Select DataRAM for DDP */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 210 | value = onenand_bufferram_address(this, block); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 211 | this->write_word(value, |
| 212 | this->base + ONENAND_REG_START_ADDRESS2); |
| 213 | |
| 214 | /* Switch to the next data buffer */ |
| 215 | ONENAND_SET_NEXT_BUFFERRAM(this); |
| 216 | |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | if (block != -1) { |
| 221 | /* Write 'DFS, FBA' of Flash */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 222 | value = onenand_block_address(this, block); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 223 | this->write_word(value, |
| 224 | this->base + ONENAND_REG_START_ADDRESS1); |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 225 | |
| 226 | /* Write 'DFS, FBA' of Flash */ |
| 227 | value = onenand_bufferram_address(this, block); |
| 228 | this->write_word(value, |
| 229 | this->base + ONENAND_REG_START_ADDRESS2); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | if (page != -1) { |
| 233 | int dataram; |
| 234 | |
| 235 | switch (cmd) { |
| 236 | case ONENAND_CMD_READ: |
| 237 | case ONENAND_CMD_READOOB: |
| 238 | dataram = ONENAND_SET_NEXT_BUFFERRAM(this); |
| 239 | readcmd = 1; |
| 240 | break; |
| 241 | |
| 242 | default: |
| 243 | dataram = ONENAND_CURRENT_BUFFERRAM(this); |
| 244 | break; |
| 245 | } |
| 246 | |
| 247 | /* Write 'FPA, FSA' of Flash */ |
| 248 | value = onenand_page_address(page, sectors); |
| 249 | this->write_word(value, |
| 250 | this->base + ONENAND_REG_START_ADDRESS8); |
| 251 | |
| 252 | /* Write 'BSA, BSC' of DataRAM */ |
| 253 | value = onenand_buffer_address(dataram, sectors, count); |
| 254 | this->write_word(value, this->base + ONENAND_REG_START_BUFFER); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | /* Interrupt clear */ |
| 258 | this->write_word(ONENAND_INT_CLEAR, this->base + ONENAND_REG_INTERRUPT); |
| 259 | /* Write command */ |
| 260 | this->write_word(cmd, this->base + ONENAND_REG_COMMAND); |
| 261 | |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * onenand_wait - [DEFAULT] wait until the command is done |
| 267 | * @param mtd MTD device structure |
| 268 | * @param state state to select the max. timeout value |
| 269 | * |
| 270 | * Wait for command done. This applies to all OneNAND command |
| 271 | * Read can take up to 30us, erase up to 2ms and program up to 350us |
| 272 | * according to general OneNAND specs |
| 273 | */ |
| 274 | static int onenand_wait(struct mtd_info *mtd, int state) |
| 275 | { |
| 276 | struct onenand_chip *this = mtd->priv; |
| 277 | unsigned int flags = ONENAND_INT_MASTER; |
| 278 | unsigned int interrupt = 0; |
| 279 | unsigned int ctrl, ecc; |
| 280 | |
| 281 | while (1) { |
| 282 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); |
| 283 | if (interrupt & flags) |
| 284 | break; |
| 285 | } |
| 286 | |
| 287 | ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); |
| 288 | |
| 289 | if (ctrl & ONENAND_CTRL_ERROR) { |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 290 | printk("onenand_wait: controller error = 0x%04x\n", ctrl); |
| 291 | if (ctrl & ONENAND_CTRL_LOCK) |
| 292 | printk("onenand_wait: it's locked error = 0x%04x\n", |
| 293 | ctrl); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 294 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 295 | return -EIO; |
| 296 | } |
| 297 | |
| 298 | if (interrupt & ONENAND_INT_READ) { |
| 299 | ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS); |
| 300 | if (ecc & ONENAND_ECC_2BIT_ALL) { |
Scott Wood | 3167c53 | 2008-06-20 12:38:57 -0500 | [diff] [blame] | 301 | MTDDEBUG (MTD_DEBUG_LEVEL0, |
Wolfgang Denk | 4b07080 | 2008-08-14 14:41:06 +0200 | [diff] [blame] | 302 | "onenand_wait: ECC error = 0x%04x\n", ecc); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 303 | return -EBADMSG; |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | return 0; |
| 308 | } |
| 309 | |
| 310 | /** |
| 311 | * onenand_bufferram_offset - [DEFAULT] BufferRAM offset |
| 312 | * @param mtd MTD data structure |
| 313 | * @param area BufferRAM area |
| 314 | * @return offset given area |
| 315 | * |
| 316 | * Return BufferRAM offset given area |
| 317 | */ |
| 318 | static inline int onenand_bufferram_offset(struct mtd_info *mtd, int area) |
| 319 | { |
| 320 | struct onenand_chip *this = mtd->priv; |
| 321 | |
| 322 | if (ONENAND_CURRENT_BUFFERRAM(this)) { |
| 323 | if (area == ONENAND_DATARAM) |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 324 | return mtd->writesize; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 325 | if (area == ONENAND_SPARERAM) |
| 326 | return mtd->oobsize; |
| 327 | } |
| 328 | |
| 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * onenand_read_bufferram - [OneNAND Interface] Read the bufferram area |
| 334 | * @param mtd MTD data structure |
| 335 | * @param area BufferRAM area |
| 336 | * @param buffer the databuffer to put/get data |
| 337 | * @param offset offset to read from or write to |
| 338 | * @param count number of bytes to read/write |
| 339 | * |
| 340 | * Read the BufferRAM area |
| 341 | */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 342 | static int onenand_read_bufferram(struct mtd_info *mtd, loff_t addr, int area, |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 343 | unsigned char *buffer, int offset, |
| 344 | size_t count) |
| 345 | { |
| 346 | struct onenand_chip *this = mtd->priv; |
| 347 | void __iomem *bufferram; |
| 348 | |
| 349 | bufferram = this->base + area; |
| 350 | bufferram += onenand_bufferram_offset(mtd, area); |
| 351 | |
Wolfgang Denk | d2c6fbe | 2008-05-01 21:30:16 +0200 | [diff] [blame] | 352 | memcpy_16(buffer, bufferram + offset, count); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 353 | |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | /** |
| 358 | * onenand_sync_read_bufferram - [OneNAND Interface] Read the bufferram area with Sync. Burst mode |
| 359 | * @param mtd MTD data structure |
| 360 | * @param area BufferRAM area |
| 361 | * @param buffer the databuffer to put/get data |
| 362 | * @param offset offset to read from or write to |
| 363 | * @param count number of bytes to read/write |
| 364 | * |
| 365 | * Read the BufferRAM area with Sync. Burst Mode |
| 366 | */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 367 | static int onenand_sync_read_bufferram(struct mtd_info *mtd, loff_t addr, int area, |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 368 | unsigned char *buffer, int offset, |
| 369 | size_t count) |
| 370 | { |
| 371 | struct onenand_chip *this = mtd->priv; |
| 372 | void __iomem *bufferram; |
| 373 | |
| 374 | bufferram = this->base + area; |
| 375 | bufferram += onenand_bufferram_offset(mtd, area); |
| 376 | |
| 377 | this->mmcontrol(mtd, ONENAND_SYS_CFG1_SYNC_READ); |
| 378 | |
Wolfgang Denk | d2c6fbe | 2008-05-01 21:30:16 +0200 | [diff] [blame] | 379 | memcpy_16(buffer, bufferram + offset, count); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 380 | |
| 381 | this->mmcontrol(mtd, 0); |
| 382 | |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * onenand_write_bufferram - [OneNAND Interface] Write the bufferram area |
| 388 | * @param mtd MTD data structure |
| 389 | * @param area BufferRAM area |
| 390 | * @param buffer the databuffer to put/get data |
| 391 | * @param offset offset to read from or write to |
| 392 | * @param count number of bytes to read/write |
| 393 | * |
| 394 | * Write the BufferRAM area |
| 395 | */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 396 | static int onenand_write_bufferram(struct mtd_info *mtd, loff_t addr, int area, |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 397 | const unsigned char *buffer, int offset, |
| 398 | size_t count) |
| 399 | { |
| 400 | struct onenand_chip *this = mtd->priv; |
| 401 | void __iomem *bufferram; |
| 402 | |
| 403 | bufferram = this->base + area; |
| 404 | bufferram += onenand_bufferram_offset(mtd, area); |
| 405 | |
Wolfgang Denk | d2c6fbe | 2008-05-01 21:30:16 +0200 | [diff] [blame] | 406 | memcpy_16(bufferram + offset, buffer, count); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 407 | |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | /** |
| 412 | * onenand_check_bufferram - [GENERIC] Check BufferRAM information |
| 413 | * @param mtd MTD data structure |
| 414 | * @param addr address to check |
| 415 | * @return 1 if there are valid data, otherwise 0 |
| 416 | * |
| 417 | * Check bufferram if there is data we required |
| 418 | */ |
| 419 | static int onenand_check_bufferram(struct mtd_info *mtd, loff_t addr) |
| 420 | { |
| 421 | struct onenand_chip *this = mtd->priv; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 422 | int blockpage, found = 0; |
| 423 | unsigned int i; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 424 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 425 | #ifdef CONFIG_S3C64XX |
| 426 | return 0; |
| 427 | #endif |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 428 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 429 | if (ONENAND_IS_2PLANE(this)) |
| 430 | blockpage = onenand_get_2x_blockpage(mtd, addr); |
| 431 | else |
| 432 | blockpage = (int) (addr >> this->page_shift); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 433 | |
| 434 | /* Is there valid data? */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 435 | i = ONENAND_CURRENT_BUFFERRAM(this); |
| 436 | if (this->bufferram[i].blockpage == blockpage) |
| 437 | found = 1; |
| 438 | else { |
| 439 | /* Check another BufferRAM */ |
| 440 | i = ONENAND_NEXT_BUFFERRAM(this); |
| 441 | if (this->bufferram[i].blockpage == blockpage) { |
| 442 | ONENAND_SET_NEXT_BUFFERRAM(this); |
| 443 | found = 1; |
| 444 | } |
| 445 | } |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 446 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 447 | if (found && ONENAND_IS_DDP(this)) { |
| 448 | /* Select DataRAM for DDP */ |
| 449 | int block = (int) (addr >> this->erase_shift); |
| 450 | int value = onenand_bufferram_address(this, block); |
| 451 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); |
| 452 | } |
| 453 | |
| 454 | return found; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 455 | } |
| 456 | |
| 457 | /** |
| 458 | * onenand_update_bufferram - [GENERIC] Update BufferRAM information |
| 459 | * @param mtd MTD data structure |
| 460 | * @param addr address to update |
| 461 | * @param valid valid flag |
| 462 | * |
| 463 | * Update BufferRAM information |
| 464 | */ |
| 465 | static int onenand_update_bufferram(struct mtd_info *mtd, loff_t addr, |
| 466 | int valid) |
| 467 | { |
| 468 | struct onenand_chip *this = mtd->priv; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 469 | int blockpage; |
| 470 | unsigned int i; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 471 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 472 | if (ONENAND_IS_2PLANE(this)) |
| 473 | blockpage = onenand_get_2x_blockpage(mtd, addr); |
| 474 | else |
| 475 | blockpage = (int)(addr >> this->page_shift); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 476 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 477 | /* Invalidate another BufferRAM */ |
| 478 | i = ONENAND_NEXT_BUFFERRAM(this); |
| 479 | if (this->bufferram[i].blockpage == blockpage) |
| 480 | this->bufferram[i].blockpage = -1; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 481 | |
| 482 | /* Update BufferRAM */ |
| 483 | i = ONENAND_CURRENT_BUFFERRAM(this); |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 484 | if (valid) |
| 485 | this->bufferram[i].blockpage = blockpage; |
| 486 | else |
| 487 | this->bufferram[i].blockpage = -1; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 488 | |
| 489 | return 0; |
| 490 | } |
| 491 | |
| 492 | /** |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 493 | * onenand_invalidate_bufferram - [GENERIC] Invalidate BufferRAM information |
| 494 | * @param mtd MTD data structure |
| 495 | * @param addr start address to invalidate |
| 496 | * @param len length to invalidate |
| 497 | * |
| 498 | * Invalidate BufferRAM information |
| 499 | */ |
| 500 | static void onenand_invalidate_bufferram(struct mtd_info *mtd, loff_t addr, |
Wolfgang Denk | 4b07080 | 2008-08-14 14:41:06 +0200 | [diff] [blame] | 501 | unsigned int len) |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 502 | { |
| 503 | struct onenand_chip *this = mtd->priv; |
| 504 | int i; |
| 505 | loff_t end_addr = addr + len; |
| 506 | |
| 507 | /* Invalidate BufferRAM */ |
| 508 | for (i = 0; i < MAX_BUFFERRAM; i++) { |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 509 | loff_t buf_addr = this->bufferram[i].blockpage << this->page_shift; |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 510 | |
| 511 | if (buf_addr >= addr && buf_addr < end_addr) |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 512 | this->bufferram[i].blockpage = -1; |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 513 | } |
| 514 | } |
| 515 | |
| 516 | /** |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 517 | * onenand_get_device - [GENERIC] Get chip for selected access |
| 518 | * @param mtd MTD device structure |
| 519 | * @param new_state the state which is requested |
| 520 | * |
| 521 | * Get the device and lock it for exclusive access |
| 522 | */ |
| 523 | static void onenand_get_device(struct mtd_info *mtd, int new_state) |
| 524 | { |
| 525 | /* Do nothing */ |
| 526 | } |
| 527 | |
| 528 | /** |
| 529 | * onenand_release_device - [GENERIC] release chip |
| 530 | * @param mtd MTD device structure |
| 531 | * |
| 532 | * Deselect, release chip lock and wake up anyone waiting on the device |
| 533 | */ |
| 534 | static void onenand_release_device(struct mtd_info *mtd) |
| 535 | { |
| 536 | /* Do nothing */ |
| 537 | } |
| 538 | |
| 539 | /** |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 540 | * onenand_transfer_auto_oob - [Internal] oob auto-placement transfer |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 541 | * @param mtd MTD device structure |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 542 | * @param buf destination address |
| 543 | * @param column oob offset to read from |
| 544 | * @param thislen oob length to read |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 545 | */ |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 546 | static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, |
| 547 | int column, int thislen) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 548 | { |
| 549 | struct onenand_chip *this = mtd->priv; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 550 | struct nand_oobfree *free; |
| 551 | int readcol = column; |
| 552 | int readend = column + thislen; |
| 553 | int lastgap = 0; |
| 554 | unsigned int i; |
| 555 | uint8_t *oob_buf = this->oob_buf; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 556 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 557 | free = this->ecclayout->oobfree; |
| 558 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { |
| 559 | if (readcol >= lastgap) |
| 560 | readcol += free->offset - lastgap; |
| 561 | if (readend >= lastgap) |
| 562 | readend += free->offset - lastgap; |
| 563 | lastgap = free->offset + free->length; |
| 564 | } |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 565 | this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 566 | free = this->ecclayout->oobfree; |
| 567 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { |
| 568 | int free_end = free->offset + free->length; |
| 569 | if (free->offset < readend && free_end > readcol) { |
| 570 | int st = max_t(int,free->offset,readcol); |
| 571 | int ed = min_t(int,free_end,readend); |
| 572 | int n = ed - st; |
| 573 | memcpy(buf, oob_buf + st, n); |
| 574 | buf += n; |
| 575 | } else if (column == 0) |
| 576 | break; |
| 577 | } |
| 578 | return 0; |
| 579 | } |
| 580 | |
| 581 | /** |
| 582 | * onenand_read_ops_nolock - [OneNAND Interface] OneNAND read main and/or out-of-band |
| 583 | * @param mtd MTD device structure |
| 584 | * @param from offset to read from |
| 585 | * @param ops oob operation description structure |
| 586 | * |
| 587 | * OneNAND read main and/or out-of-band data |
| 588 | */ |
| 589 | static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, |
| 590 | struct mtd_oob_ops *ops) |
| 591 | { |
| 592 | struct onenand_chip *this = mtd->priv; |
| 593 | struct mtd_ecc_stats stats; |
| 594 | size_t len = ops->len; |
| 595 | size_t ooblen = ops->ooblen; |
| 596 | u_char *buf = ops->datbuf; |
| 597 | u_char *oobbuf = ops->oobbuf; |
| 598 | int read = 0, column, thislen; |
| 599 | int oobread = 0, oobcolumn, thisooblen, oobsize; |
| 600 | int ret = 0, boundary = 0; |
| 601 | int writesize = this->writesize; |
| 602 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 603 | MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 604 | |
| 605 | if (ops->mode == MTD_OOB_AUTO) |
| 606 | oobsize = this->ecclayout->oobavail; |
| 607 | else |
| 608 | oobsize = mtd->oobsize; |
| 609 | |
| 610 | oobcolumn = from & (mtd->oobsize - 1); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 611 | |
| 612 | /* Do not allow reads past end of device */ |
| 613 | if ((from + len) > mtd->size) { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 614 | printk(KERN_ERR "onenand_read_ops_nolock: Attempt read beyond end of device\n"); |
| 615 | ops->retlen = 0; |
| 616 | ops->oobretlen = 0; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 617 | return -EINVAL; |
| 618 | } |
| 619 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 620 | stats = mtd->ecc_stats; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 621 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 622 | /* Read-while-load method */ |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 623 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 624 | /* Do first load to bufferRAM */ |
| 625 | if (read < len) { |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 626 | if (!onenand_check_bufferram(mtd, from)) { |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 627 | this->main_buf = buf; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 628 | this->command(mtd, ONENAND_CMD_READ, from, writesize); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 629 | ret = this->wait(mtd, FL_READING); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 630 | onenand_update_bufferram(mtd, from, !ret); |
| 631 | if (ret == -EBADMSG) |
| 632 | ret = 0; |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | thislen = min_t(int, writesize, len - read); |
| 637 | column = from & (writesize - 1); |
| 638 | if (column + thislen > writesize) |
| 639 | thislen = writesize - column; |
| 640 | |
| 641 | while (!ret) { |
| 642 | /* If there is more to load then start next load */ |
| 643 | from += thislen; |
| 644 | if (read + thislen < len) { |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 645 | this->main_buf = buf + thislen; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 646 | this->command(mtd, ONENAND_CMD_READ, from, writesize); |
| 647 | /* |
| 648 | * Chip boundary handling in DDP |
| 649 | * Now we issued chip 1 read and pointed chip 1 |
| 650 | * bufferam so we have to point chip 0 bufferam. |
| 651 | */ |
| 652 | if (ONENAND_IS_DDP(this) && |
| 653 | unlikely(from == (this->chipsize >> 1))) { |
| 654 | this->write_word(ONENAND_DDP_CHIP0, this->base + ONENAND_REG_START_ADDRESS2); |
| 655 | boundary = 1; |
| 656 | } else |
| 657 | boundary = 0; |
| 658 | ONENAND_SET_PREV_BUFFERRAM(this); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 659 | } |
| 660 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 661 | /* While load is going, read from last bufferRAM */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 662 | this->read_bufferram(mtd, from - thislen, ONENAND_DATARAM, buf, column, thislen); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 663 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 664 | /* Read oob area if needed */ |
| 665 | if (oobbuf) { |
| 666 | thisooblen = oobsize - oobcolumn; |
| 667 | thisooblen = min_t(int, thisooblen, ooblen - oobread); |
| 668 | |
| 669 | if (ops->mode == MTD_OOB_AUTO) |
| 670 | onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen); |
| 671 | else |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 672 | this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 673 | oobread += thisooblen; |
| 674 | oobbuf += thisooblen; |
| 675 | oobcolumn = 0; |
| 676 | } |
| 677 | |
| 678 | /* See if we are done */ |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 679 | read += thislen; |
| 680 | if (read == len) |
| 681 | break; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 682 | /* Set up for next read from bufferRAM */ |
| 683 | if (unlikely(boundary)) |
| 684 | this->write_word(ONENAND_DDP_CHIP1, this->base + ONENAND_REG_START_ADDRESS2); |
| 685 | ONENAND_SET_NEXT_BUFFERRAM(this); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 686 | buf += thislen; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 687 | thislen = min_t(int, writesize, len - read); |
| 688 | column = 0; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 689 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 690 | /* Now wait for load */ |
| 691 | ret = this->wait(mtd, FL_READING); |
| 692 | onenand_update_bufferram(mtd, from, !ret); |
| 693 | if (ret == -EBADMSG) |
| 694 | ret = 0; |
| 695 | } |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 696 | |
| 697 | /* |
| 698 | * Return success, if no ECC failures, else -EBADMSG |
| 699 | * fs driver will take care of that, because |
| 700 | * retlen == desired len and result == -EBADMSG |
| 701 | */ |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 702 | ops->retlen = read; |
| 703 | ops->oobretlen = oobread; |
| 704 | |
| 705 | if (ret) |
| 706 | return ret; |
| 707 | |
| 708 | if (mtd->ecc_stats.failed - stats.failed) |
| 709 | return -EBADMSG; |
| 710 | |
| 711 | return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0; |
| 712 | } |
| 713 | |
| 714 | /** |
| 715 | * onenand_read_oob_nolock - [MTD Interface] OneNAND read out-of-band |
| 716 | * @param mtd MTD device structure |
| 717 | * @param from offset to read from |
| 718 | * @param ops oob operation description structure |
| 719 | * |
| 720 | * OneNAND read out-of-band data from the spare area |
| 721 | */ |
| 722 | static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, |
| 723 | struct mtd_oob_ops *ops) |
| 724 | { |
| 725 | struct onenand_chip *this = mtd->priv; |
| 726 | struct mtd_ecc_stats stats; |
| 727 | int read = 0, thislen, column, oobsize; |
| 728 | size_t len = ops->ooblen; |
| 729 | mtd_oob_mode_t mode = ops->mode; |
| 730 | u_char *buf = ops->oobbuf; |
| 731 | int ret = 0; |
| 732 | |
| 733 | from += ops->ooboffs; |
| 734 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 735 | MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_read_oob_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 736 | |
| 737 | /* Initialize return length value */ |
| 738 | ops->oobretlen = 0; |
| 739 | |
| 740 | if (mode == MTD_OOB_AUTO) |
| 741 | oobsize = this->ecclayout->oobavail; |
| 742 | else |
| 743 | oobsize = mtd->oobsize; |
| 744 | |
| 745 | column = from & (mtd->oobsize - 1); |
| 746 | |
| 747 | if (unlikely(column >= oobsize)) { |
| 748 | printk(KERN_ERR "onenand_read_oob_nolock: Attempted to start read outside oob\n"); |
| 749 | return -EINVAL; |
| 750 | } |
| 751 | |
| 752 | /* Do not allow reads past end of device */ |
| 753 | if (unlikely(from >= mtd->size || |
| 754 | column + len > ((mtd->size >> this->page_shift) - |
| 755 | (from >> this->page_shift)) * oobsize)) { |
| 756 | printk(KERN_ERR "onenand_read_oob_nolock: Attempted to read beyond end of device\n"); |
| 757 | return -EINVAL; |
| 758 | } |
| 759 | |
| 760 | stats = mtd->ecc_stats; |
| 761 | |
| 762 | while (read < len) { |
| 763 | thislen = oobsize - column; |
| 764 | thislen = min_t(int, thislen, len); |
| 765 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 766 | this->spare_buf = buf; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 767 | this->command(mtd, ONENAND_CMD_READOOB, from, mtd->oobsize); |
| 768 | |
| 769 | onenand_update_bufferram(mtd, from, 0); |
| 770 | |
| 771 | ret = this->wait(mtd, FL_READING); |
| 772 | if (ret && ret != -EBADMSG) { |
| 773 | printk(KERN_ERR "onenand_read_oob_nolock: read failed = 0x%x\n", ret); |
| 774 | break; |
| 775 | } |
| 776 | |
| 777 | if (mode == MTD_OOB_AUTO) |
| 778 | onenand_transfer_auto_oob(mtd, buf, column, thislen); |
| 779 | else |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 780 | this->read_bufferram(mtd, 0, ONENAND_SPARERAM, buf, column, thislen); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 781 | |
| 782 | read += thislen; |
| 783 | |
| 784 | if (read == len) |
| 785 | break; |
| 786 | |
| 787 | buf += thislen; |
| 788 | |
| 789 | /* Read more? */ |
| 790 | if (read < len) { |
| 791 | /* Page size */ |
| 792 | from += mtd->writesize; |
| 793 | column = 0; |
| 794 | } |
| 795 | } |
| 796 | |
| 797 | ops->oobretlen = read; |
| 798 | |
| 799 | if (ret) |
| 800 | return ret; |
| 801 | |
| 802 | if (mtd->ecc_stats.failed - stats.failed) |
| 803 | return -EBADMSG; |
| 804 | |
| 805 | return 0; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 806 | } |
| 807 | |
| 808 | /** |
| 809 | * onenand_read - [MTD Interface] MTD compability function for onenand_read_ecc |
| 810 | * @param mtd MTD device structure |
| 811 | * @param from offset to read from |
| 812 | * @param len number of bytes to read |
| 813 | * @param retlen pointer to variable to store the number of read bytes |
| 814 | * @param buf the databuffer to put data |
| 815 | * |
| 816 | * This function simply calls onenand_read_ecc with oob buffer and oobsel = NULL |
| 817 | */ |
| 818 | int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, |
| 819 | size_t * retlen, u_char * buf) |
| 820 | { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 821 | struct mtd_oob_ops ops = { |
| 822 | .len = len, |
| 823 | .ooblen = 0, |
| 824 | .datbuf = buf, |
| 825 | .oobbuf = NULL, |
| 826 | }; |
| 827 | int ret; |
| 828 | |
| 829 | onenand_get_device(mtd, FL_READING); |
| 830 | ret = onenand_read_ops_nolock(mtd, from, &ops); |
| 831 | onenand_release_device(mtd); |
| 832 | |
| 833 | *retlen = ops.retlen; |
| 834 | return ret; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 835 | } |
| 836 | |
| 837 | /** |
| 838 | * onenand_read_oob - [MTD Interface] OneNAND read out-of-band |
| 839 | * @param mtd MTD device structure |
| 840 | * @param from offset to read from |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 841 | * @param ops oob operations description structure |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 842 | * |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 843 | * OneNAND main and/or out-of-band |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 844 | */ |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 845 | int onenand_read_oob(struct mtd_info *mtd, loff_t from, |
| 846 | struct mtd_oob_ops *ops) |
| 847 | { |
| 848 | int ret; |
| 849 | |
| 850 | switch (ops->mode) { |
| 851 | case MTD_OOB_PLACE: |
| 852 | case MTD_OOB_AUTO: |
| 853 | break; |
| 854 | case MTD_OOB_RAW: |
| 855 | /* Not implemented yet */ |
| 856 | default: |
| 857 | return -EINVAL; |
| 858 | } |
| 859 | |
| 860 | onenand_get_device(mtd, FL_READING); |
| 861 | if (ops->datbuf) |
| 862 | ret = onenand_read_ops_nolock(mtd, from, ops); |
| 863 | else |
| 864 | ret = onenand_read_oob_nolock(mtd, from, ops); |
| 865 | onenand_release_device(mtd); |
| 866 | |
| 867 | return ret; |
| 868 | } |
| 869 | |
| 870 | /** |
| 871 | * onenand_bbt_wait - [DEFAULT] wait until the command is done |
| 872 | * @param mtd MTD device structure |
| 873 | * @param state state to select the max. timeout value |
| 874 | * |
| 875 | * Wait for command done. |
| 876 | */ |
| 877 | static int onenand_bbt_wait(struct mtd_info *mtd, int state) |
| 878 | { |
| 879 | struct onenand_chip *this = mtd->priv; |
| 880 | unsigned int flags = ONENAND_INT_MASTER; |
| 881 | unsigned int interrupt; |
| 882 | unsigned int ctrl; |
| 883 | |
| 884 | while (1) { |
| 885 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); |
| 886 | if (interrupt & flags) |
| 887 | break; |
| 888 | } |
| 889 | |
| 890 | /* To get correct interrupt status in timeout case */ |
| 891 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); |
| 892 | ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); |
| 893 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 894 | if (interrupt & ONENAND_INT_READ) { |
| 895 | int ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS); |
| 896 | if (ecc & ONENAND_ECC_2BIT_ALL) |
| 897 | return ONENAND_BBT_READ_ERROR; |
| 898 | } else { |
| 899 | printk(KERN_ERR "onenand_bbt_wait: read timeout!" |
| 900 | "ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt); |
| 901 | return ONENAND_BBT_READ_FATAL_ERROR; |
| 902 | } |
| 903 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 904 | /* Initial bad block case: 0x2400 or 0x0400 */ |
| 905 | if (ctrl & ONENAND_CTRL_ERROR) { |
| 906 | printk(KERN_DEBUG "onenand_bbt_wait: controller error = 0x%04x\n", ctrl); |
| 907 | return ONENAND_BBT_READ_ERROR; |
| 908 | } |
| 909 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 910 | return 0; |
| 911 | } |
| 912 | |
| 913 | /** |
| 914 | * onenand_bbt_read_oob - [MTD Interface] OneNAND read out-of-band for bbt scan |
| 915 | * @param mtd MTD device structure |
| 916 | * @param from offset to read from |
| 917 | * @param ops oob operation description structure |
| 918 | * |
| 919 | * OneNAND read out-of-band data from the spare area for bbt scan |
| 920 | */ |
| 921 | int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, |
| 922 | struct mtd_oob_ops *ops) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 923 | { |
| 924 | struct onenand_chip *this = mtd->priv; |
| 925 | int read = 0, thislen, column; |
| 926 | int ret = 0; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 927 | size_t len = ops->ooblen; |
| 928 | u_char *buf = ops->oobbuf; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 929 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 930 | MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_bbt_read_oob: from = 0x%08x, len = %zi\n", (unsigned int) from, len); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 931 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 932 | /* Initialize return value */ |
| 933 | ops->oobretlen = 0; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 934 | |
| 935 | /* Do not allow reads past end of device */ |
| 936 | if (unlikely((from + len) > mtd->size)) { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 937 | printk(KERN_ERR "onenand_bbt_read_oob: Attempt read beyond end of device\n"); |
| 938 | return ONENAND_BBT_READ_FATAL_ERROR; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 939 | } |
| 940 | |
| 941 | /* Grab the lock and see if the device is available */ |
| 942 | onenand_get_device(mtd, FL_READING); |
| 943 | |
| 944 | column = from & (mtd->oobsize - 1); |
| 945 | |
| 946 | while (read < len) { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 947 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 948 | thislen = mtd->oobsize - column; |
| 949 | thislen = min_t(int, thislen, len); |
| 950 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 951 | this->spare_buf = buf; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 952 | this->command(mtd, ONENAND_CMD_READOOB, from, mtd->oobsize); |
| 953 | |
| 954 | onenand_update_bufferram(mtd, from, 0); |
| 955 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 956 | ret = this->bbt_wait(mtd, FL_READING); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 957 | if (ret) |
| 958 | break; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 959 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 960 | this->read_spareram(mtd, 0, ONENAND_SPARERAM, buf, column, thislen); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 961 | read += thislen; |
| 962 | if (read == len) |
| 963 | break; |
| 964 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 965 | buf += thislen; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 966 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 967 | /* Read more? */ |
| 968 | if (read < len) { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 969 | /* Update Page size */ |
| 970 | from += this->writesize; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 971 | column = 0; |
| 972 | } |
| 973 | } |
| 974 | |
| 975 | /* Deselect and wake up anyone waiting on the device */ |
| 976 | onenand_release_device(mtd); |
| 977 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 978 | ops->oobretlen = read; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 979 | return ret; |
| 980 | } |
| 981 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 982 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 983 | #ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE |
| 984 | /** |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 985 | * onenand_verify_oob - [GENERIC] verify the oob contents after a write |
| 986 | * @param mtd MTD device structure |
| 987 | * @param buf the databuffer to verify |
| 988 | * @param to offset to read from |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 989 | */ |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 990 | static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 991 | { |
| 992 | struct onenand_chip *this = mtd->priv; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 993 | u_char *oob_buf = this->oob_buf; |
| 994 | int status, i; |
| 995 | |
| 996 | this->command(mtd, ONENAND_CMD_READOOB, to, mtd->oobsize); |
| 997 | onenand_update_bufferram(mtd, to, 0); |
| 998 | status = this->wait(mtd, FL_READING); |
| 999 | if (status) |
| 1000 | return status; |
| 1001 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1002 | this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1003 | for (i = 0; i < mtd->oobsize; i++) |
| 1004 | if (buf[i] != 0xFF && buf[i] != oob_buf[i]) |
| 1005 | return -EBADMSG; |
| 1006 | |
| 1007 | return 0; |
| 1008 | } |
| 1009 | |
| 1010 | /** |
| 1011 | * onenand_verify - [GENERIC] verify the chip contents after a write |
| 1012 | * @param mtd MTD device structure |
| 1013 | * @param buf the databuffer to verify |
| 1014 | * @param addr offset to read from |
| 1015 | * @param len number of bytes to read and compare |
| 1016 | */ |
| 1017 | static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, size_t len) |
| 1018 | { |
| 1019 | struct onenand_chip *this = mtd->priv; |
| 1020 | void __iomem *dataram; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1021 | int ret = 0; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1022 | int thislen, column; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1023 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1024 | while (len != 0) { |
| 1025 | thislen = min_t(int, this->writesize, len); |
| 1026 | column = addr & (this->writesize - 1); |
| 1027 | if (column + thislen > this->writesize) |
| 1028 | thislen = this->writesize - column; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1029 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1030 | this->command(mtd, ONENAND_CMD_READ, addr, this->writesize); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1031 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1032 | onenand_update_bufferram(mtd, addr, 0); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1033 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1034 | ret = this->wait(mtd, FL_READING); |
| 1035 | if (ret) |
| 1036 | return ret; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1037 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1038 | onenand_update_bufferram(mtd, addr, 1); |
| 1039 | |
| 1040 | dataram = this->base + ONENAND_DATARAM; |
| 1041 | dataram += onenand_bufferram_offset(mtd, ONENAND_DATARAM); |
| 1042 | |
| 1043 | if (memcmp(buf, dataram + column, thislen)) |
| 1044 | return -EBADMSG; |
| 1045 | |
| 1046 | len -= thislen; |
| 1047 | buf += thislen; |
| 1048 | addr += thislen; |
| 1049 | } |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1050 | |
| 1051 | return 0; |
| 1052 | } |
| 1053 | #else |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1054 | #define onenand_verify(...) (0) |
| 1055 | #define onenand_verify_oob(...) (0) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1056 | #endif |
| 1057 | |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1058 | #define NOTALIGNED(x) ((x & (mtd->writesize - 1)) != 0) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1059 | |
| 1060 | /** |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1061 | * onenand_fill_auto_oob - [Internal] oob auto-placement transfer |
| 1062 | * @param mtd MTD device structure |
| 1063 | * @param oob_buf oob buffer |
| 1064 | * @param buf source address |
| 1065 | * @param column oob offset to write to |
| 1066 | * @param thislen oob length to write |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1067 | */ |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1068 | static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf, |
| 1069 | const u_char *buf, int column, int thislen) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1070 | { |
| 1071 | struct onenand_chip *this = mtd->priv; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1072 | struct nand_oobfree *free; |
| 1073 | int writecol = column; |
| 1074 | int writeend = column + thislen; |
| 1075 | int lastgap = 0; |
| 1076 | unsigned int i; |
| 1077 | |
| 1078 | free = this->ecclayout->oobfree; |
| 1079 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { |
| 1080 | if (writecol >= lastgap) |
| 1081 | writecol += free->offset - lastgap; |
| 1082 | if (writeend >= lastgap) |
| 1083 | writeend += free->offset - lastgap; |
| 1084 | lastgap = free->offset + free->length; |
| 1085 | } |
| 1086 | free = this->ecclayout->oobfree; |
| 1087 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { |
| 1088 | int free_end = free->offset + free->length; |
| 1089 | if (free->offset < writeend && free_end > writecol) { |
| 1090 | int st = max_t(int,free->offset,writecol); |
| 1091 | int ed = min_t(int,free_end,writeend); |
| 1092 | int n = ed - st; |
| 1093 | memcpy(oob_buf + st, buf, n); |
| 1094 | buf += n; |
| 1095 | } else if (column == 0) |
| 1096 | break; |
| 1097 | } |
| 1098 | return 0; |
| 1099 | } |
| 1100 | |
| 1101 | /** |
| 1102 | * onenand_write_ops_nolock - [OneNAND Interface] write main and/or out-of-band |
| 1103 | * @param mtd MTD device structure |
| 1104 | * @param to offset to write to |
| 1105 | * @param ops oob operation description structure |
| 1106 | * |
| 1107 | * Write main and/or oob with ECC |
| 1108 | */ |
| 1109 | static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, |
| 1110 | struct mtd_oob_ops *ops) |
| 1111 | { |
| 1112 | struct onenand_chip *this = mtd->priv; |
| 1113 | int written = 0, column, thislen, subpage; |
| 1114 | int oobwritten = 0, oobcolumn, thisooblen, oobsize; |
| 1115 | size_t len = ops->len; |
| 1116 | size_t ooblen = ops->ooblen; |
| 1117 | const u_char *buf = ops->datbuf; |
| 1118 | const u_char *oob = ops->oobbuf; |
| 1119 | u_char *oobbuf; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1120 | int ret = 0; |
| 1121 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1122 | MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ops_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1123 | |
| 1124 | /* Initialize retlen, in case of early exit */ |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1125 | ops->retlen = 0; |
| 1126 | ops->oobretlen = 0; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1127 | |
| 1128 | /* Do not allow writes past end of device */ |
| 1129 | if (unlikely((to + len) > mtd->size)) { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1130 | printk(KERN_ERR "onenand_write_ops_nolock: Attempt write to past end of device\n"); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1131 | return -EINVAL; |
| 1132 | } |
| 1133 | |
| 1134 | /* Reject writes, which are not page aligned */ |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1135 | if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) { |
| 1136 | printk(KERN_ERR "onenand_write_ops_nolock: Attempt to write not page aligned data\n"); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1137 | return -EINVAL; |
| 1138 | } |
| 1139 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1140 | if (ops->mode == MTD_OOB_AUTO) |
| 1141 | oobsize = this->ecclayout->oobavail; |
| 1142 | else |
| 1143 | oobsize = mtd->oobsize; |
| 1144 | |
| 1145 | oobcolumn = to & (mtd->oobsize - 1); |
| 1146 | |
| 1147 | column = to & (mtd->writesize - 1); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1148 | |
| 1149 | /* Loop until all data write */ |
| 1150 | while (written < len) { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1151 | u_char *wbuf = (u_char *) buf; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1152 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1153 | thislen = min_t(int, mtd->writesize - column, len - written); |
| 1154 | thisooblen = min_t(int, oobsize - oobcolumn, ooblen - oobwritten); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1155 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1156 | this->command(mtd, ONENAND_CMD_BUFFERRAM, to, thislen); |
| 1157 | |
| 1158 | /* Partial page write */ |
| 1159 | subpage = thislen < mtd->writesize; |
| 1160 | if (subpage) { |
| 1161 | memset(this->page_buf, 0xff, mtd->writesize); |
| 1162 | memcpy(this->page_buf + column, buf, thislen); |
| 1163 | wbuf = this->page_buf; |
| 1164 | } |
| 1165 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1166 | this->write_bufferram(mtd, to, ONENAND_DATARAM, wbuf, 0, mtd->writesize); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1167 | |
| 1168 | if (oob) { |
| 1169 | oobbuf = this->oob_buf; |
| 1170 | |
| 1171 | /* We send data to spare ram with oobsize |
| 1172 | * * to prevent byte access */ |
| 1173 | memset(oobbuf, 0xff, mtd->oobsize); |
| 1174 | if (ops->mode == MTD_OOB_AUTO) |
| 1175 | onenand_fill_auto_oob(mtd, oobbuf, oob, oobcolumn, thisooblen); |
| 1176 | else |
| 1177 | memcpy(oobbuf + oobcolumn, oob, thisooblen); |
| 1178 | |
| 1179 | oobwritten += thisooblen; |
| 1180 | oob += thisooblen; |
| 1181 | oobcolumn = 0; |
| 1182 | } else |
| 1183 | oobbuf = (u_char *) ffchars; |
| 1184 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1185 | this->write_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1186 | |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1187 | this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1188 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1189 | ret = this->wait(mtd, FL_WRITING); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1190 | |
| 1191 | /* In partial page write we don't update bufferram */ |
| 1192 | onenand_update_bufferram(mtd, to, !ret && !subpage); |
| 1193 | if (ONENAND_IS_2PLANE(this)) { |
| 1194 | ONENAND_SET_BUFFERRAM1(this); |
| 1195 | onenand_update_bufferram(mtd, to + this->writesize, !ret && !subpage); |
| 1196 | } |
| 1197 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1198 | if (ret) { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1199 | printk(KERN_ERR "onenand_write_ops_nolock: write filaed %d\n", ret); |
| 1200 | break; |
| 1201 | } |
| 1202 | |
| 1203 | /* Only check verify write turn on */ |
| 1204 | ret = onenand_verify(mtd, buf, to, thislen); |
| 1205 | if (ret) { |
| 1206 | printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1207 | break; |
| 1208 | } |
| 1209 | |
| 1210 | written += thislen; |
| 1211 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1212 | if (written == len) |
| 1213 | break; |
| 1214 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1215 | column = 0; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1216 | to += thislen; |
| 1217 | buf += thislen; |
| 1218 | } |
| 1219 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1220 | ops->retlen = written; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1221 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1222 | return ret; |
| 1223 | } |
| 1224 | |
| 1225 | /** |
| 1226 | * onenand_write_oob_nolock - [Internal] OneNAND write out-of-band |
| 1227 | * @param mtd MTD device structure |
| 1228 | * @param to offset to write to |
| 1229 | * @param len number of bytes to write |
| 1230 | * @param retlen pointer to variable to store the number of written bytes |
| 1231 | * @param buf the data to write |
| 1232 | * @param mode operation mode |
| 1233 | * |
| 1234 | * OneNAND write out-of-band |
| 1235 | */ |
| 1236 | static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, |
| 1237 | struct mtd_oob_ops *ops) |
| 1238 | { |
| 1239 | struct onenand_chip *this = mtd->priv; |
| 1240 | int column, ret = 0, oobsize; |
| 1241 | int written = 0; |
| 1242 | u_char *oobbuf; |
| 1243 | size_t len = ops->ooblen; |
| 1244 | const u_char *buf = ops->oobbuf; |
| 1245 | mtd_oob_mode_t mode = ops->mode; |
| 1246 | |
| 1247 | to += ops->ooboffs; |
| 1248 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1249 | MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1250 | |
| 1251 | /* Initialize retlen, in case of early exit */ |
| 1252 | ops->oobretlen = 0; |
| 1253 | |
| 1254 | if (mode == MTD_OOB_AUTO) |
| 1255 | oobsize = this->ecclayout->oobavail; |
| 1256 | else |
| 1257 | oobsize = mtd->oobsize; |
| 1258 | |
| 1259 | column = to & (mtd->oobsize - 1); |
| 1260 | |
| 1261 | if (unlikely(column >= oobsize)) { |
| 1262 | printk(KERN_ERR "onenand_write_oob_nolock: Attempted to start write outside oob\n"); |
| 1263 | return -EINVAL; |
| 1264 | } |
| 1265 | |
| 1266 | /* For compatibility with NAND: Do not allow write past end of page */ |
| 1267 | if (unlikely(column + len > oobsize)) { |
| 1268 | printk(KERN_ERR "onenand_write_oob_nolock: " |
| 1269 | "Attempt to write past end of page\n"); |
| 1270 | return -EINVAL; |
| 1271 | } |
| 1272 | |
| 1273 | /* Do not allow reads past end of device */ |
| 1274 | if (unlikely(to >= mtd->size || |
| 1275 | column + len > ((mtd->size >> this->page_shift) - |
| 1276 | (to >> this->page_shift)) * oobsize)) { |
| 1277 | printk(KERN_ERR "onenand_write_oob_nolock: Attempted to write past end of device\n"); |
| 1278 | return -EINVAL; |
| 1279 | } |
| 1280 | |
| 1281 | oobbuf = this->oob_buf; |
| 1282 | |
| 1283 | /* Loop until all data write */ |
| 1284 | while (written < len) { |
| 1285 | int thislen = min_t(int, oobsize, len - written); |
| 1286 | |
| 1287 | this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobsize); |
| 1288 | |
| 1289 | /* We send data to spare ram with oobsize |
| 1290 | * to prevent byte access */ |
| 1291 | memset(oobbuf, 0xff, mtd->oobsize); |
| 1292 | if (mode == MTD_OOB_AUTO) |
| 1293 | onenand_fill_auto_oob(mtd, oobbuf, buf, column, thislen); |
| 1294 | else |
| 1295 | memcpy(oobbuf + column, buf, thislen); |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1296 | this->write_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1297 | |
| 1298 | this->command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize); |
| 1299 | |
| 1300 | onenand_update_bufferram(mtd, to, 0); |
| 1301 | if (ONENAND_IS_2PLANE(this)) { |
| 1302 | ONENAND_SET_BUFFERRAM1(this); |
| 1303 | onenand_update_bufferram(mtd, to + this->writesize, 0); |
| 1304 | } |
| 1305 | |
| 1306 | ret = this->wait(mtd, FL_WRITING); |
| 1307 | if (ret) { |
| 1308 | printk(KERN_ERR "onenand_write_oob_nolock: write failed %d\n", ret); |
| 1309 | break; |
| 1310 | } |
| 1311 | |
| 1312 | ret = onenand_verify_oob(mtd, oobbuf, to); |
| 1313 | if (ret) { |
| 1314 | printk(KERN_ERR "onenand_write_oob_nolock: verify failed %d\n", ret); |
| 1315 | break; |
| 1316 | } |
| 1317 | |
| 1318 | written += thislen; |
| 1319 | if (written == len) |
| 1320 | break; |
| 1321 | |
| 1322 | to += mtd->writesize; |
| 1323 | buf += thislen; |
| 1324 | column = 0; |
| 1325 | } |
| 1326 | |
| 1327 | ops->oobretlen = written; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1328 | |
| 1329 | return ret; |
| 1330 | } |
| 1331 | |
| 1332 | /** |
| 1333 | * onenand_write - [MTD Interface] compability function for onenand_write_ecc |
| 1334 | * @param mtd MTD device structure |
| 1335 | * @param to offset to write to |
| 1336 | * @param len number of bytes to write |
| 1337 | * @param retlen pointer to variable to store the number of written bytes |
| 1338 | * @param buf the data to write |
| 1339 | * |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1340 | * Write with ECC |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1341 | */ |
| 1342 | int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, |
| 1343 | size_t * retlen, const u_char * buf) |
| 1344 | { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1345 | struct mtd_oob_ops ops = { |
| 1346 | .len = len, |
| 1347 | .ooblen = 0, |
| 1348 | .datbuf = (u_char *) buf, |
| 1349 | .oobbuf = NULL, |
| 1350 | }; |
| 1351 | int ret; |
| 1352 | |
| 1353 | onenand_get_device(mtd, FL_WRITING); |
| 1354 | ret = onenand_write_ops_nolock(mtd, to, &ops); |
| 1355 | onenand_release_device(mtd); |
| 1356 | |
| 1357 | *retlen = ops.retlen; |
| 1358 | return ret; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1359 | } |
| 1360 | |
| 1361 | /** |
| 1362 | * onenand_write_oob - [MTD Interface] OneNAND write out-of-band |
| 1363 | * @param mtd MTD device structure |
| 1364 | * @param to offset to write to |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1365 | * @param ops oob operation description structure |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1366 | * |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1367 | * OneNAND write main and/or out-of-band |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1368 | */ |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1369 | int onenand_write_oob(struct mtd_info *mtd, loff_t to, |
| 1370 | struct mtd_oob_ops *ops) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1371 | { |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1372 | int ret; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1373 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1374 | switch (ops->mode) { |
| 1375 | case MTD_OOB_PLACE: |
| 1376 | case MTD_OOB_AUTO: |
| 1377 | break; |
| 1378 | case MTD_OOB_RAW: |
| 1379 | /* Not implemented yet */ |
| 1380 | default: |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1381 | return -EINVAL; |
| 1382 | } |
| 1383 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1384 | onenand_get_device(mtd, FL_WRITING); |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1385 | if (ops->datbuf) |
| 1386 | ret = onenand_write_ops_nolock(mtd, to, ops); |
| 1387 | else |
| 1388 | ret = onenand_write_oob_nolock(mtd, to, ops); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1389 | onenand_release_device(mtd); |
| 1390 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1391 | return ret; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1392 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1393 | } |
| 1394 | |
| 1395 | /** |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1396 | * onenand_block_isbad_nolock - [GENERIC] Check if a block is marked bad |
| 1397 | * @param mtd MTD device structure |
| 1398 | * @param ofs offset from device start |
| 1399 | * @param allowbbt 1, if its allowed to access the bbt area |
| 1400 | * |
| 1401 | * Check, if the block is bad, Either by reading the bad block table or |
| 1402 | * calling of the scan function. |
| 1403 | */ |
| 1404 | static int onenand_block_isbad_nolock(struct mtd_info *mtd, loff_t ofs, int allowbbt) |
| 1405 | { |
| 1406 | struct onenand_chip *this = mtd->priv; |
| 1407 | struct bbm_info *bbm = this->bbm; |
| 1408 | |
| 1409 | /* Return info from the table */ |
| 1410 | return bbm->isbad_bbt(mtd, ofs, allowbbt); |
| 1411 | } |
| 1412 | |
| 1413 | |
| 1414 | /** |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1415 | * onenand_erase - [MTD Interface] erase block(s) |
| 1416 | * @param mtd MTD device structure |
| 1417 | * @param instr erase instruction |
| 1418 | * |
| 1419 | * Erase one ore more blocks |
| 1420 | */ |
| 1421 | int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) |
| 1422 | { |
| 1423 | struct onenand_chip *this = mtd->priv; |
| 1424 | unsigned int block_size; |
| 1425 | loff_t addr; |
| 1426 | int len; |
| 1427 | int ret = 0; |
| 1428 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1429 | MTDDEBUG (MTD_DEBUG_LEVEL3, |
| 1430 | "onenand_erase: start = 0x%08x, len = %i\n", |
Scott Wood | c45912d | 2008-10-24 16:20:43 -0500 | [diff] [blame] | 1431 | (unsigned int)instr->addr, (unsigned int)instr->len); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1432 | |
| 1433 | block_size = (1 << this->erase_shift); |
| 1434 | |
| 1435 | /* Start address must align on block boundary */ |
| 1436 | if (unlikely(instr->addr & (block_size - 1))) { |
Scott Wood | 3167c53 | 2008-06-20 12:38:57 -0500 | [diff] [blame] | 1437 | MTDDEBUG (MTD_DEBUG_LEVEL0, |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1438 | "onenand_erase: Unaligned address\n"); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1439 | return -EINVAL; |
| 1440 | } |
| 1441 | |
| 1442 | /* Length must align on block boundary */ |
| 1443 | if (unlikely(instr->len & (block_size - 1))) { |
Scott Wood | 3167c53 | 2008-06-20 12:38:57 -0500 | [diff] [blame] | 1444 | MTDDEBUG (MTD_DEBUG_LEVEL0, |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1445 | "onenand_erase: Length not block aligned\n"); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1446 | return -EINVAL; |
| 1447 | } |
| 1448 | |
| 1449 | /* Do not allow erase past end of device */ |
| 1450 | if (unlikely((instr->len + instr->addr) > mtd->size)) { |
Scott Wood | 3167c53 | 2008-06-20 12:38:57 -0500 | [diff] [blame] | 1451 | MTDDEBUG (MTD_DEBUG_LEVEL0, |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1452 | "onenand_erase: Erase past end of device\n"); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1453 | return -EINVAL; |
| 1454 | } |
| 1455 | |
| 1456 | instr->fail_addr = 0xffffffff; |
| 1457 | |
| 1458 | /* Grab the lock and see if the device is available */ |
| 1459 | onenand_get_device(mtd, FL_ERASING); |
| 1460 | |
| 1461 | /* Loop throught the pages */ |
| 1462 | len = instr->len; |
| 1463 | addr = instr->addr; |
| 1464 | |
| 1465 | instr->state = MTD_ERASING; |
| 1466 | |
| 1467 | while (len) { |
| 1468 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1469 | /* Check if we have a bad block, we do not erase bad blocks */ |
| 1470 | if (instr->priv == 0 && onenand_block_isbad_nolock(mtd, addr, 0)) { |
| 1471 | printk(KERN_WARNING "onenand_erase: attempt to erase" |
| 1472 | " a bad block at addr 0x%08x\n", |
| 1473 | (unsigned int) addr); |
| 1474 | instr->state = MTD_ERASE_FAILED; |
| 1475 | goto erase_exit; |
| 1476 | } |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1477 | |
| 1478 | this->command(mtd, ONENAND_CMD_ERASE, addr, block_size); |
| 1479 | |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1480 | onenand_invalidate_bufferram(mtd, addr, block_size); |
| 1481 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1482 | ret = this->wait(mtd, FL_ERASING); |
| 1483 | /* Check, if it is write protected */ |
| 1484 | if (ret) { |
| 1485 | if (ret == -EPERM) |
Scott Wood | 3167c53 | 2008-06-20 12:38:57 -0500 | [diff] [blame] | 1486 | MTDDEBUG (MTD_DEBUG_LEVEL0, "onenand_erase: " |
Wolfgang Denk | 4b07080 | 2008-08-14 14:41:06 +0200 | [diff] [blame] | 1487 | "Device is write protected!!!\n"); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1488 | else |
Scott Wood | 3167c53 | 2008-06-20 12:38:57 -0500 | [diff] [blame] | 1489 | MTDDEBUG (MTD_DEBUG_LEVEL0, "onenand_erase: " |
Wolfgang Denk | 4b07080 | 2008-08-14 14:41:06 +0200 | [diff] [blame] | 1490 | "Failed erase, block %d\n", |
| 1491 | (unsigned)(addr >> this->erase_shift)); |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1492 | if (ret == -EPERM) |
| 1493 | printk("onenand_erase: " |
| 1494 | "Device is write protected!!!\n"); |
| 1495 | else |
| 1496 | printk("onenand_erase: " |
| 1497 | "Failed erase, block %d\n", |
| 1498 | (unsigned)(addr >> this->erase_shift)); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1499 | instr->state = MTD_ERASE_FAILED; |
| 1500 | instr->fail_addr = addr; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1501 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1502 | goto erase_exit; |
| 1503 | } |
| 1504 | |
| 1505 | len -= block_size; |
| 1506 | addr += block_size; |
| 1507 | } |
| 1508 | |
| 1509 | instr->state = MTD_ERASE_DONE; |
| 1510 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1511 | erase_exit: |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1512 | |
| 1513 | ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; |
| 1514 | /* Do call back function */ |
| 1515 | if (!ret) |
| 1516 | mtd_erase_callback(instr); |
| 1517 | |
| 1518 | /* Deselect and wake up anyone waiting on the device */ |
| 1519 | onenand_release_device(mtd); |
| 1520 | |
| 1521 | return ret; |
| 1522 | } |
| 1523 | |
| 1524 | /** |
| 1525 | * onenand_sync - [MTD Interface] sync |
| 1526 | * @param mtd MTD device structure |
| 1527 | * |
| 1528 | * Sync is actually a wait for chip ready function |
| 1529 | */ |
| 1530 | void onenand_sync(struct mtd_info *mtd) |
| 1531 | { |
Scott Wood | 3167c53 | 2008-06-20 12:38:57 -0500 | [diff] [blame] | 1532 | MTDDEBUG (MTD_DEBUG_LEVEL3, "onenand_sync: called\n"); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1533 | |
| 1534 | /* Grab the lock and see if the device is available */ |
| 1535 | onenand_get_device(mtd, FL_SYNCING); |
| 1536 | |
| 1537 | /* Release it and go back */ |
| 1538 | onenand_release_device(mtd); |
| 1539 | } |
| 1540 | |
| 1541 | /** |
| 1542 | * onenand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad |
| 1543 | * @param mtd MTD device structure |
| 1544 | * @param ofs offset relative to mtd start |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1545 | * |
| 1546 | * Check whether the block is bad |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1547 | */ |
| 1548 | int onenand_block_isbad(struct mtd_info *mtd, loff_t ofs) |
| 1549 | { |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1550 | int ret; |
| 1551 | |
| 1552 | /* Check for invalid offset */ |
| 1553 | if (ofs > mtd->size) |
| 1554 | return -EINVAL; |
| 1555 | |
| 1556 | onenand_get_device(mtd, FL_READING); |
| 1557 | ret = onenand_block_isbad_nolock(mtd,ofs, 0); |
| 1558 | onenand_release_device(mtd); |
| 1559 | return ret; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1560 | } |
| 1561 | |
| 1562 | /** |
| 1563 | * onenand_block_markbad - [MTD Interface] Mark the block at the given offset as bad |
| 1564 | * @param mtd MTD device structure |
| 1565 | * @param ofs offset relative to mtd start |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1566 | * |
| 1567 | * Mark the block as bad |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1568 | */ |
| 1569 | int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs) |
| 1570 | { |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1571 | struct onenand_chip *this = mtd->priv; |
| 1572 | int ret; |
| 1573 | |
| 1574 | ret = onenand_block_isbad(mtd, ofs); |
| 1575 | if (ret) { |
| 1576 | /* If it was bad already, return success and do nothing */ |
| 1577 | if (ret > 0) |
| 1578 | return 0; |
| 1579 | return ret; |
| 1580 | } |
| 1581 | |
| 1582 | ret = this->block_markbad(mtd, ofs); |
| 1583 | return ret; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1584 | } |
| 1585 | |
| 1586 | /** |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1587 | * onenand_do_lock_cmd - [OneNAND Interface] Lock or unlock block(s) |
| 1588 | * @param mtd MTD device structure |
| 1589 | * @param ofs offset relative to mtd start |
| 1590 | * @param len number of bytes to lock or unlock |
| 1591 | * @param cmd lock or unlock command |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1592 | * |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1593 | * Lock or unlock one or more blocks |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1594 | */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1595 | static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int cmd) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1596 | { |
| 1597 | struct onenand_chip *this = mtd->priv; |
| 1598 | int start, end, block, value, status; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1599 | int wp_status_mask; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1600 | |
| 1601 | start = ofs >> this->erase_shift; |
| 1602 | end = len >> this->erase_shift; |
| 1603 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1604 | if (cmd == ONENAND_CMD_LOCK) |
| 1605 | wp_status_mask = ONENAND_WP_LS; |
| 1606 | else |
| 1607 | wp_status_mask = ONENAND_WP_US; |
| 1608 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1609 | /* Continuous lock scheme */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1610 | if (this->options & ONENAND_HAS_CONT_LOCK) { |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1611 | /* Set start block address */ |
| 1612 | this->write_word(start, |
| 1613 | this->base + ONENAND_REG_START_BLOCK_ADDRESS); |
| 1614 | /* Set end block address */ |
| 1615 | this->write_word(end - 1, |
| 1616 | this->base + ONENAND_REG_END_BLOCK_ADDRESS); |
| 1617 | /* Write unlock command */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1618 | this->command(mtd, cmd, 0, 0); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1619 | |
| 1620 | /* There's no return value */ |
| 1621 | this->wait(mtd, FL_UNLOCKING); |
| 1622 | |
| 1623 | /* Sanity check */ |
| 1624 | while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS) |
| 1625 | & ONENAND_CTRL_ONGO) |
| 1626 | continue; |
| 1627 | |
| 1628 | /* Check lock status */ |
| 1629 | status = this->read_word(this->base + ONENAND_REG_WP_STATUS); |
| 1630 | if (!(status & ONENAND_WP_US)) |
| 1631 | printk(KERN_ERR "wp status = 0x%x\n", status); |
| 1632 | |
| 1633 | return 0; |
| 1634 | } |
| 1635 | |
| 1636 | /* Block lock scheme */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1637 | for (block = start; block < start + end; block++) { |
| 1638 | /* Set block address */ |
| 1639 | value = onenand_block_address(this, block); |
| 1640 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1); |
| 1641 | /* Select DataRAM for DDP */ |
| 1642 | value = onenand_bufferram_address(this, block); |
| 1643 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); |
| 1644 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1645 | /* Set start block address */ |
| 1646 | this->write_word(block, |
| 1647 | this->base + ONENAND_REG_START_BLOCK_ADDRESS); |
| 1648 | /* Write unlock command */ |
| 1649 | this->command(mtd, ONENAND_CMD_UNLOCK, 0, 0); |
| 1650 | |
| 1651 | /* There's no return value */ |
| 1652 | this->wait(mtd, FL_UNLOCKING); |
| 1653 | |
| 1654 | /* Sanity check */ |
| 1655 | while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS) |
| 1656 | & ONENAND_CTRL_ONGO) |
| 1657 | continue; |
| 1658 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1659 | /* Check lock status */ |
| 1660 | status = this->read_word(this->base + ONENAND_REG_WP_STATUS); |
| 1661 | if (!(status & ONENAND_WP_US)) |
| 1662 | printk(KERN_ERR "block = %d, wp status = 0x%x\n", |
| 1663 | block, status); |
| 1664 | } |
| 1665 | |
| 1666 | return 0; |
| 1667 | } |
| 1668 | |
| 1669 | /** |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1670 | * onenand_lock - [MTD Interface] Lock block(s) |
| 1671 | * @param mtd MTD device structure |
| 1672 | * @param ofs offset relative to mtd start |
| 1673 | * @param len number of bytes to unlock |
| 1674 | * |
| 1675 | * Lock one or more blocks |
| 1676 | */ |
| 1677 | static int onenand_lock(struct mtd_info *mtd, loff_t ofs, size_t len) |
| 1678 | { |
| 1679 | int ret; |
| 1680 | |
| 1681 | onenand_get_device(mtd, FL_LOCKING); |
| 1682 | ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_LOCK); |
| 1683 | onenand_release_device(mtd); |
| 1684 | return ret; |
| 1685 | } |
| 1686 | |
| 1687 | /** |
| 1688 | * onenand_unlock - [MTD Interface] Unlock block(s) |
| 1689 | * @param mtd MTD device structure |
| 1690 | * @param ofs offset relative to mtd start |
| 1691 | * @param len number of bytes to unlock |
| 1692 | * |
| 1693 | * Unlock one or more blocks |
| 1694 | */ |
| 1695 | static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len) |
| 1696 | { |
| 1697 | int ret; |
| 1698 | |
| 1699 | onenand_get_device(mtd, FL_LOCKING); |
| 1700 | ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); |
| 1701 | onenand_release_device(mtd); |
| 1702 | return ret; |
| 1703 | } |
| 1704 | |
| 1705 | /** |
| 1706 | * onenand_check_lock_status - [OneNAND Interface] Check lock status |
| 1707 | * @param this onenand chip data structure |
| 1708 | * |
| 1709 | * Check lock status |
| 1710 | */ |
| 1711 | static int onenand_check_lock_status(struct onenand_chip *this) |
| 1712 | { |
| 1713 | unsigned int value, block, status; |
| 1714 | unsigned int end; |
| 1715 | |
| 1716 | end = this->chipsize >> this->erase_shift; |
| 1717 | for (block = 0; block < end; block++) { |
| 1718 | /* Set block address */ |
| 1719 | value = onenand_block_address(this, block); |
| 1720 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1); |
| 1721 | /* Select DataRAM for DDP */ |
| 1722 | value = onenand_bufferram_address(this, block); |
| 1723 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); |
| 1724 | /* Set start block address */ |
| 1725 | this->write_word(block, this->base + ONENAND_REG_START_BLOCK_ADDRESS); |
| 1726 | |
| 1727 | /* Check lock status */ |
| 1728 | status = this->read_word(this->base + ONENAND_REG_WP_STATUS); |
| 1729 | if (!(status & ONENAND_WP_US)) { |
| 1730 | printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status); |
| 1731 | return 0; |
| 1732 | } |
| 1733 | } |
| 1734 | |
| 1735 | return 1; |
| 1736 | } |
| 1737 | |
| 1738 | /** |
| 1739 | * onenand_unlock_all - [OneNAND Interface] unlock all blocks |
| 1740 | * @param mtd MTD device structure |
| 1741 | * |
| 1742 | * Unlock all blocks |
| 1743 | */ |
| 1744 | static void onenand_unlock_all(struct mtd_info *mtd) |
| 1745 | { |
| 1746 | struct onenand_chip *this = mtd->priv; |
| 1747 | loff_t ofs = 0; |
| 1748 | size_t len = this->chipsize; |
| 1749 | |
| 1750 | if (this->options & ONENAND_HAS_UNLOCK_ALL) { |
| 1751 | /* Set start block address */ |
| 1752 | this->write_word(0, this->base + ONENAND_REG_START_BLOCK_ADDRESS); |
| 1753 | /* Write unlock command */ |
| 1754 | this->command(mtd, ONENAND_CMD_UNLOCK_ALL, 0, 0); |
| 1755 | |
| 1756 | /* There's no return value */ |
| 1757 | this->wait(mtd, FL_LOCKING); |
| 1758 | |
| 1759 | /* Sanity check */ |
| 1760 | while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS) |
| 1761 | & ONENAND_CTRL_ONGO) |
| 1762 | continue; |
| 1763 | |
| 1764 | return; |
| 1765 | |
| 1766 | /* Check lock status */ |
| 1767 | if (onenand_check_lock_status(this)) |
| 1768 | return; |
| 1769 | |
| 1770 | /* Workaround for all block unlock in DDP */ |
| 1771 | if (ONENAND_IS_DDP(this)) { |
| 1772 | /* All blocks on another chip */ |
| 1773 | ofs = this->chipsize >> 1; |
| 1774 | len = this->chipsize >> 1; |
| 1775 | } |
| 1776 | } |
| 1777 | |
| 1778 | onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); |
| 1779 | } |
| 1780 | |
| 1781 | |
| 1782 | /** |
| 1783 | * onenand_check_features - Check and set OneNAND features |
| 1784 | * @param mtd MTD data structure |
| 1785 | * |
| 1786 | * Check and set OneNAND features |
| 1787 | * - lock scheme |
| 1788 | * - two plane |
| 1789 | */ |
| 1790 | static void onenand_check_features(struct mtd_info *mtd) |
| 1791 | { |
| 1792 | struct onenand_chip *this = mtd->priv; |
| 1793 | unsigned int density, process; |
| 1794 | |
| 1795 | /* Lock scheme depends on density and process */ |
| 1796 | density = onenand_get_density(this->device_id); |
| 1797 | process = this->version_id >> ONENAND_VERSION_PROCESS_SHIFT; |
| 1798 | |
| 1799 | /* Lock scheme */ |
| 1800 | switch (density) { |
| 1801 | case ONENAND_DEVICE_DENSITY_4Gb: |
| 1802 | this->options |= ONENAND_HAS_2PLANE; |
| 1803 | |
| 1804 | case ONENAND_DEVICE_DENSITY_2Gb: |
| 1805 | /* 2Gb DDP don't have 2 plane */ |
| 1806 | if (!ONENAND_IS_DDP(this)) |
| 1807 | this->options |= ONENAND_HAS_2PLANE; |
| 1808 | this->options |= ONENAND_HAS_UNLOCK_ALL; |
| 1809 | |
| 1810 | case ONENAND_DEVICE_DENSITY_1Gb: |
| 1811 | /* A-Die has all block unlock */ |
| 1812 | if (process) |
| 1813 | this->options |= ONENAND_HAS_UNLOCK_ALL; |
| 1814 | break; |
| 1815 | |
| 1816 | default: |
| 1817 | /* Some OneNAND has continuous lock scheme */ |
| 1818 | if (!process) |
| 1819 | this->options |= ONENAND_HAS_CONT_LOCK; |
| 1820 | break; |
| 1821 | } |
| 1822 | |
| 1823 | if (this->options & ONENAND_HAS_CONT_LOCK) |
| 1824 | printk(KERN_DEBUG "Lock scheme is Continuous Lock\n"); |
| 1825 | if (this->options & ONENAND_HAS_UNLOCK_ALL) |
| 1826 | printk(KERN_DEBUG "Chip support all block unlock\n"); |
| 1827 | if (this->options & ONENAND_HAS_2PLANE) |
| 1828 | printk(KERN_DEBUG "Chip has 2 plane\n"); |
| 1829 | } |
| 1830 | |
| 1831 | /** |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1832 | * onenand_print_device_info - Print device ID |
| 1833 | * @param device device ID |
| 1834 | * |
| 1835 | * Print device ID |
| 1836 | */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1837 | char *onenand_print_device_info(int device, int version) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1838 | { |
| 1839 | int vcc, demuxed, ddp, density; |
Fathi BOUDRA | 195ccfc | 2008-08-06 10:06:20 +0200 | [diff] [blame] | 1840 | char *dev_info = malloc(80); |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1841 | char *p = dev_info; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1842 | |
| 1843 | vcc = device & ONENAND_DEVICE_VCC_MASK; |
| 1844 | demuxed = device & ONENAND_DEVICE_IS_DEMUX; |
| 1845 | ddp = device & ONENAND_DEVICE_IS_DDP; |
| 1846 | density = device >> ONENAND_DEVICE_DENSITY_SHIFT; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1847 | p += sprintf(dev_info, "%sOneNAND%s %dMB %sV 16-bit (0x%02x)", |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1848 | demuxed ? "" : "Muxed ", |
| 1849 | ddp ? "(DDP)" : "", |
| 1850 | (16 << density), vcc ? "2.65/3.3" : "1.8", device); |
Fathi BOUDRA | 195ccfc | 2008-08-06 10:06:20 +0200 | [diff] [blame] | 1851 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1852 | sprintf(p, "\nOneNAND version = 0x%04x", version); |
| 1853 | printk("%s\n", dev_info); |
| 1854 | |
Fathi BOUDRA | 195ccfc | 2008-08-06 10:06:20 +0200 | [diff] [blame] | 1855 | return dev_info; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1856 | } |
| 1857 | |
| 1858 | static const struct onenand_manufacturers onenand_manuf_ids[] = { |
| 1859 | {ONENAND_MFR_SAMSUNG, "Samsung"}, |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1860 | }; |
| 1861 | |
| 1862 | /** |
| 1863 | * onenand_check_maf - Check manufacturer ID |
| 1864 | * @param manuf manufacturer ID |
| 1865 | * |
| 1866 | * Check manufacturer ID |
| 1867 | */ |
| 1868 | static int onenand_check_maf(int manuf) |
| 1869 | { |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1870 | int size = ARRAY_SIZE(onenand_manuf_ids); |
| 1871 | char *name; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1872 | int i; |
| 1873 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1874 | for (i = 0; size; i++) |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1875 | if (manuf == onenand_manuf_ids[i].id) |
| 1876 | break; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1877 | |
| 1878 | if (i < size) |
| 1879 | name = onenand_manuf_ids[i].name; |
| 1880 | else |
| 1881 | name = "Unknown"; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1882 | |
| 1883 | #ifdef ONENAND_DEBUG |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1884 | printk(KERN_DEBUG "OneNAND Manufacturer: %s (0x%0x)\n", name, manuf); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1885 | #endif |
| 1886 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1887 | return i == size; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1888 | } |
| 1889 | |
| 1890 | /** |
| 1891 | * onenand_probe - [OneNAND Interface] Probe the OneNAND device |
| 1892 | * @param mtd MTD device structure |
| 1893 | * |
| 1894 | * OneNAND detection method: |
| 1895 | * Compare the the values from command with ones from register |
| 1896 | */ |
| 1897 | static int onenand_probe(struct mtd_info *mtd) |
| 1898 | { |
| 1899 | struct onenand_chip *this = mtd->priv; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1900 | int bram_maf_id, bram_dev_id, maf_id, dev_id, ver_id; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1901 | int density; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1902 | int syscfg; |
| 1903 | |
| 1904 | /* Save system configuration 1 */ |
| 1905 | syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1); |
| 1906 | /* Clear Sync. Burst Read mode to read BootRAM */ |
| 1907 | this->write_word((syscfg & ~ONENAND_SYS_CFG1_SYNC_READ), this->base + ONENAND_REG_SYS_CFG1); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1908 | |
| 1909 | /* Send the command for reading device ID from BootRAM */ |
| 1910 | this->write_word(ONENAND_CMD_READID, this->base + ONENAND_BOOTRAM); |
| 1911 | |
| 1912 | /* Read manufacturer and device IDs from BootRAM */ |
| 1913 | bram_maf_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x0); |
| 1914 | bram_dev_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x2); |
| 1915 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1916 | /* Reset OneNAND to read default register values */ |
| 1917 | this->write_word(ONENAND_CMD_RESET, this->base + ONENAND_BOOTRAM); |
| 1918 | |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1919 | /* Wait reset */ |
| 1920 | this->wait(mtd, FL_RESETING); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1921 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1922 | /* Restore system configuration 1 */ |
| 1923 | this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1); |
| 1924 | |
| 1925 | /* Check manufacturer ID */ |
| 1926 | if (onenand_check_maf(bram_maf_id)) |
| 1927 | return -ENXIO; |
| 1928 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1929 | /* Read manufacturer and device IDs from Register */ |
| 1930 | maf_id = this->read_word(this->base + ONENAND_REG_MANUFACTURER_ID); |
| 1931 | dev_id = this->read_word(this->base + ONENAND_REG_DEVICE_ID); |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1932 | ver_id = this->read_word(this->base + ONENAND_REG_VERSION_ID); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1933 | |
| 1934 | /* Check OneNAND device */ |
| 1935 | if (maf_id != bram_maf_id || dev_id != bram_dev_id) |
| 1936 | return -ENXIO; |
| 1937 | |
Kyungmin Park | 1bb707c | 2008-03-17 08:54:06 +0900 | [diff] [blame] | 1938 | /* FIXME : Current OneNAND MTD doesn't support Flex-OneNAND */ |
| 1939 | if (dev_id & (1 << 9)) { |
| 1940 | printk("Not yet support Flex-OneNAND\n"); |
| 1941 | return -ENXIO; |
| 1942 | } |
| 1943 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1944 | /* Flash device information */ |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1945 | mtd->name = onenand_print_device_info(dev_id, ver_id); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1946 | this->device_id = dev_id; |
| 1947 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1948 | density = onenand_get_density(dev_id); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1949 | this->chipsize = (16 << density) << 20; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1950 | /* Set density mask. it is used for DDP */ |
| 1951 | if (ONENAND_IS_DDP(this)) |
| 1952 | this->density_mask = (1 << (density + 6)); |
| 1953 | else |
| 1954 | this->density_mask = 0; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1955 | |
| 1956 | /* OneNAND page size & block size */ |
| 1957 | /* The data buffer size is equal to page size */ |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1958 | mtd->writesize = |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1959 | this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE); |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1960 | mtd->oobsize = mtd->writesize >> 5; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1961 | /* Pagers per block is always 64 in OneNAND */ |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1962 | mtd->erasesize = mtd->writesize << 6; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1963 | |
| 1964 | this->erase_shift = ffs(mtd->erasesize) - 1; |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1965 | this->page_shift = ffs(mtd->writesize) - 1; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1966 | this->ppb_shift = (this->erase_shift - this->page_shift); |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1967 | this->page_mask = (mtd->erasesize / mtd->writesize) - 1; |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 1968 | /* It's real page size */ |
| 1969 | this->writesize = mtd->writesize; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1970 | |
| 1971 | /* REVIST: Multichip handling */ |
| 1972 | |
| 1973 | mtd->size = this->chipsize; |
| 1974 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 1975 | /* Check OneNAND features */ |
| 1976 | onenand_check_features(mtd); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1977 | |
Kyungmin Park | d438d50 | 2008-08-13 09:11:02 +0900 | [diff] [blame] | 1978 | mtd->flags = MTD_CAP_NANDFLASH; |
Fathi BOUDRA | 195ccfc | 2008-08-06 10:06:20 +0200 | [diff] [blame] | 1979 | mtd->erase = onenand_erase; |
| 1980 | mtd->read = onenand_read; |
| 1981 | mtd->write = onenand_write; |
Fathi BOUDRA | 195ccfc | 2008-08-06 10:06:20 +0200 | [diff] [blame] | 1982 | mtd->read_oob = onenand_read_oob; |
| 1983 | mtd->write_oob = onenand_write_oob; |
| 1984 | mtd->sync = onenand_sync; |
| 1985 | mtd->block_isbad = onenand_block_isbad; |
| 1986 | mtd->block_markbad = onenand_block_markbad; |
| 1987 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 1988 | return 0; |
| 1989 | } |
| 1990 | |
| 1991 | /** |
| 1992 | * onenand_scan - [OneNAND Interface] Scan for the OneNAND device |
| 1993 | * @param mtd MTD device structure |
| 1994 | * @param maxchips Number of chips to scan for |
| 1995 | * |
| 1996 | * This fills out all the not initialized function pointers |
| 1997 | * with the defaults. |
| 1998 | * The flash ID is read and the mtd/chip structures are |
| 1999 | * filled with the appropriate values. |
| 2000 | */ |
| 2001 | int onenand_scan(struct mtd_info *mtd, int maxchips) |
| 2002 | { |
| 2003 | struct onenand_chip *this = mtd->priv; |
| 2004 | |
| 2005 | if (!this->read_word) |
| 2006 | this->read_word = onenand_readw; |
| 2007 | if (!this->write_word) |
| 2008 | this->write_word = onenand_writew; |
| 2009 | |
| 2010 | if (!this->command) |
| 2011 | this->command = onenand_command; |
| 2012 | if (!this->wait) |
| 2013 | this->wait = onenand_wait; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 2014 | if (!this->bbt_wait) |
| 2015 | this->bbt_wait = onenand_bbt_wait; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 2016 | |
| 2017 | if (!this->read_bufferram) |
| 2018 | this->read_bufferram = onenand_read_bufferram; |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 2019 | if (!this->read_spareram) |
| 2020 | this->read_spareram = onenand_read_bufferram; |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 2021 | if (!this->write_bufferram) |
| 2022 | this->write_bufferram = onenand_write_bufferram; |
| 2023 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 2024 | if (!this->scan_bbt) |
| 2025 | this->scan_bbt = onenand_default_bbt; |
| 2026 | |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 2027 | if (onenand_probe(mtd)) |
| 2028 | return -ENXIO; |
| 2029 | |
| 2030 | /* Set Sync. Burst Read after probing */ |
| 2031 | if (this->mmcontrol) { |
| 2032 | printk(KERN_INFO "OneNAND Sync. Burst Read support\n"); |
| 2033 | this->read_bufferram = onenand_sync_read_bufferram; |
| 2034 | } |
| 2035 | |
Kyungmin Park | bfd7f38 | 2008-08-19 08:42:53 +0900 | [diff] [blame] | 2036 | /* Allocate buffers, if necessary */ |
| 2037 | if (!this->page_buf) { |
| 2038 | this->page_buf = kzalloc(mtd->writesize, GFP_KERNEL); |
| 2039 | if (!this->page_buf) { |
| 2040 | printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n"); |
| 2041 | return -ENOMEM; |
| 2042 | } |
| 2043 | this->options |= ONENAND_PAGEBUF_ALLOC; |
| 2044 | } |
| 2045 | if (!this->oob_buf) { |
| 2046 | this->oob_buf = kzalloc(mtd->oobsize, GFP_KERNEL); |
| 2047 | if (!this->oob_buf) { |
| 2048 | printk(KERN_ERR "onenand_scan: Can't allocate oob_buf\n"); |
| 2049 | if (this->options & ONENAND_PAGEBUF_ALLOC) { |
| 2050 | this->options &= ~ONENAND_PAGEBUF_ALLOC; |
| 2051 | kfree(this->page_buf); |
| 2052 | } |
| 2053 | return -ENOMEM; |
| 2054 | } |
| 2055 | this->options |= ONENAND_OOBBUF_ALLOC; |
| 2056 | } |
| 2057 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 2058 | /* Unlock whole block */ |
| 2059 | onenand_unlock_all(mtd); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 2060 | |
Kyungmin Park | ef0921d | 2008-11-04 09:24:07 +0900 | [diff] [blame^] | 2061 | return this->scan_bbt(mtd); |
Kyungmin Park | 916527f | 2007-09-10 17:13:49 +0900 | [diff] [blame] | 2062 | } |
| 2063 | |
| 2064 | /** |
| 2065 | * onenand_release - [OneNAND Interface] Free resources held by the OneNAND device |
| 2066 | * @param mtd MTD device structure |
| 2067 | */ |
| 2068 | void onenand_release(struct mtd_info *mtd) |
| 2069 | { |
| 2070 | } |