| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Linux driver for NAND NV Flash Translation Layer |
| 3 | * Copyright (C) 2013, ZTE Corporation. |
| 4 | */ |
| 5 | |
| 6 | |
| 7 | #include <linux/mtd/mtd.h> |
| 8 | #include <linux/kernel.h> |
| 9 | #include <linux/module.h> |
| 10 | #include <asm/errno.h> |
| 11 | #include <asm/io.h> |
| 12 | #include <asm/uaccess.h> |
| 13 | #include <linux/delay.h> |
| 14 | #include <linux/slab.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/hdreg.h> |
| 17 | #include <linux/blkdev.h> |
| 18 | |
| 19 | #include <linux/kmod.h> |
| 20 | #include <linux/mtd/mtd.h> |
| 21 | #include <linux/mtd/nand.h> |
| 22 | |
| 23 | #include <linux/mtd/blktrans.h> |
| 24 | #include <linux/mtd/zftl.h> |
| 25 | #include <linux/mtd/zftl_ecc.h> |
| 26 | |
| 27 | |
| 28 | |
| 29 | #include <linux/types.h> |
| 30 | #include <linux/mtd/map.h> |
| 31 | #include <linux/mtd/partitions.h> |
| 32 | #include <asm/io.h> |
| 33 | |
| 34 | #ifdef CONFIG_MTD_NVRESUME |
| 35 | #include <linux/mfd/zx234290.h> |
| 36 | #endif |
| 37 | |
| 38 | #include <linux/mtd/partition_guard.h> |
| 39 | |
| 40 | #define ZFTL_DEBUG 0 |
| 41 | |
| 42 | |
| 43 | /* DEBUG */ |
| 44 | #if ZFTL_DEBUG |
| 45 | #define zftl_debug(fmt,args...) printk (fmt ,##args) |
| 46 | #define zftl_debugX(level,fmt,args...) if (DEBUG>=level) printk(fmt,##args); |
| 47 | #else |
| 48 | #define zftl_debug(fmt,args...) |
| 49 | #define zftl_debugX(level,fmt,args...) |
| 50 | #endif /* DEBUG */ |
| 51 | |
| 52 | /* defined in cmd_nand.c */ |
| 53 | int arg_off_size(int argc, char *const argv[], int *idx, |
| 54 | loff_t *off, loff_t *size); |
| 55 | extern int nand_block_isbad(struct mtd_info *mtd, loff_t offs); |
| 56 | int zftl_unpack_tags(struct zftl_packed_tags *pt); |
| 57 | |
| 58 | |
| 59 | #ifdef CONFIG_MTD_NVRESUME |
| 60 | int zftl_res = 0; |
| 61 | extern int hal_Comm_Soft_Reset(T_ZDrvSys_RESET_TYPE reset_type); |
| 62 | extern int zOss_NvInResume(void); |
| 63 | extern void zOss_NvSetErrorAddr(int dwAddr); |
| 64 | #endif |
| 65 | |
| 66 | struct ZFTLrecord *zftl_info[CONFIG_ZFTL_MAX_PARTITIONS] = {NULL}; |
| 67 | extern struct mtd_info *mtd_fota; |
| 68 | extern struct cmdline_mtd_partition *partitions; |
| 69 | |
| 70 | struct cmdline_mtd_partition { |
| 71 | struct cmdline_mtd_partition *next; |
| 72 | char *mtd_id; |
| 73 | int num_parts; |
| 74 | struct mtd_partition *parts; |
| 75 | }; |
| 76 | |
| 77 | int partnum = 0; |
| 78 | static struct mutex zftl_mutex; |
| 79 | static int mutex_inited = 0; |
| 80 | int cdrom_partsize = 0; |
| 81 | |
| 82 | /* nvro partition size */ |
| 83 | int nvro_partsize = 0; |
| 84 | int nvrwo_partsize = 0; |
| 85 | |
| 86 | |
| 87 | int nand_NvProgram(int dwStart, int dwLen, char* from); |
| 88 | int nand_NvRead(int dwStart, int dwLen, char* to); |
| 89 | |
| 90 | |
| 91 | static int memcmpb(void *a, int c, int n) |
| 92 | { |
| 93 | int i; |
| 94 | for (i = 0; i < n; i++) { |
| 95 | if (c != ((unsigned char *)a)[i]) |
| 96 | return 1; |
| 97 | } |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | /* Read oob data from flash */ |
| 102 | static int zftl_read_oob(struct ZFTLrecord *zftl, uint32_t offs, uint8_t *buf) |
| 103 | { |
| 104 | nand_info_t *nand = zftl->nand; |
| 105 | uint32_t mask = zftl->writesize - 1; |
| 106 | struct mtd_oob_ops ops; |
| 107 | int32_t res; |
| 108 | struct zftl_packed_tags pt; |
| 109 | |
| 110 | ops.mode = MTD_OPS_AUTO_OOB; |
| 111 | ops.ooboffs = offs & mask; |
| 112 | |
| 113 | #ifdef CONFIG_ZFTL_ENABLE_OOB_ECC |
| 114 | ops.ooblen = sizeof(struct zftl_packed_tags); |
| 115 | ops.oobbuf = (uint8_t*)&pt; |
| 116 | #else |
| 117 | ops.ooblen = sizeof(struct zftl_oob); |
| 118 | ops.oobbuf = buf; |
| 119 | #endif |
| 120 | ops.datbuf = NULL; |
| 121 | |
| 122 | res = nand->_read_oob(nand, (offs & ~mask), &ops); |
| 123 | |
| 124 | #ifdef CONFIG_ZFTL_ENABLE_OOB_ECC |
| 125 | zftl_unpack_tags(&pt); |
| 126 | memcpy(buf,(uint8_t *)&(pt.t),sizeof(struct zftl_oob )); |
| 127 | #endif |
| 128 | |
| 129 | return res; |
| 130 | } |
| 131 | |
| 132 | |
| 133 | static int zftl_setup_table(struct ZFTLrecord *zftl, uint32_t *is_writed) |
| 134 | { |
| 135 | nand_info_t *nand = zftl->nand; |
| 136 | uint32_t block_num = zftl->numBlocks; |
| 137 | uint32_t first_block = zftl->firstBlock; |
| 138 | uint32_t erasesize = zftl->erasesize; |
| 139 | uint32_t oobsize = zftl->oobsize; |
| 140 | struct zftl_oob *oob = (struct zftl_oob *)zftl->oobbuf; |
| 141 | uint32_t index = 0; |
| 142 | uint32_t addr = 0; |
| 143 | |
| 144 | memset(oob, 0x0, oobsize); |
| 145 | |
| 146 | for( index = 0; index < block_num; index++ ) |
| 147 | { |
| 148 | addr = (first_block + index) * erasesize; |
| 149 | if(nand->_block_isbad(nand, (loff_t)addr)) |
| 150 | { |
| 151 | zftl->blockTable[index] = BLOCK_BAD; |
| 152 | continue; |
| 153 | } |
| 154 | |
| 155 | /* д¿éµÄ˳ÐòΪ ÏÈдµÚ¶þÒ³¿ªÊ¼µ½×îºóÒ»Ò³£¬ÔÙдµÚÒ»Ò³ */ |
| 156 | /* µÚÒ»Ò³oob µÚ¶þÒ³oob ¿é״̬ ˵Ã÷ */ |
| 157 | /* 0xff 0xff BLOCK_FREE ¶¼Ã»ÓпªÊ¼Ð´ */ |
| 158 | /* 0xff ---- BLOCK_DIRTY ¿ªÊ¼Ð´£¬µ«Ã»ÓÐдÍêµÚÒ»Ò³£¬Öм䱻ÖÐ¶Ï */ |
| 159 | /* ---- 0xff BLOCK_USED/DIRTY дÍêµÚÒ»Ò³£¬Íê³É¿éдÈë */ |
| 160 | /* ---- ---- BLOCK_USED/DIRTY дÍêµÚÒ»Ò³£¬Íê³É¿éдÈë */ |
| 161 | |
| 162 | if(zftl_read_oob(zftl, addr, (uint8_t *)oob ))/* ¶ÁÈ¡µÚÒ»Ò³ */ |
| 163 | { |
| 164 | printk("[zftl_setup_table] read oob error at = 0x%08x\n", addr); |
| 165 | return NAND_READ_WRITE_ERROR; |
| 166 | } |
| 167 | |
| 168 | if(memcmpb(oob, 0xff, oobsize)) /* µÚÒ»Ò³oob != 0xff */ |
| 169 | { |
| 170 | //if( oob.used == 1 ) /* block is used */ |
| 171 | if( !memcmp(oob->head, CONFIG_ZFLT_HEAD, CONFIG_ZFLT_HEAD_BYTE) ) /* °üº¬ÓзÖÇøÍ· */ |
| 172 | { |
| 173 | *is_writed += 1; |
| 174 | if( oob->version > zftl->versionTable[oob->logicBlockID]) |
| 175 | { |
| 176 | /* version is newer */ |
| 177 | if(zftl->versionTable[oob->logicBlockID] != 0) /* ÒѾÓжÔÓ¦µÄused¿éÁË */ |
| 178 | zftl->blockTable[zftl->blockRepTable[oob->logicBlockID]] = BLOCK_DIRTY; |
| 179 | |
| 180 | zftl->blockRepTable[oob->logicBlockID] = index; |
| 181 | zftl->versionTable[oob->logicBlockID] = oob->version; |
| 182 | zftl->blockTable[index] = BLOCK_USED; |
| 183 | /* Added by zhouqi for xxx, 2014/04/23 */ |
| 184 | zftl->lastFreeBlock = index + 1; |
| 185 | } |
| 186 | else |
| 187 | zftl->blockTable[index] = BLOCK_DIRTY; |
| 188 | } |
| 189 | else |
| 190 | zftl->blockTable[index] = BLOCK_DIRTY; |
| 191 | } |
| 192 | else /* 0xff£¬block is free */ |
| 193 | { |
| 194 | if(zftl_read_oob(zftl, addr + zftl->writesize, (uint8_t *)oob ))/* ¶ÁÈ¡µÚ¶þÒ³ */ |
| 195 | { |
| 196 | printk("[zftl_setup_table] read oob error at = 0x%08x\n", addr); |
| 197 | return NAND_READ_WRITE_ERROR; |
| 198 | } |
| 199 | |
| 200 | if(memcmpb(oob, 0xff, oobsize)) /* µÚ¶þÒ³oob != 0xff */ |
| 201 | { |
| 202 | zftl->blockTable[index] = BLOCK_DIRTY; |
| 203 | } |
| 204 | else /* µÚ¶þÒ³oob = 0xff */ |
| 205 | zftl->blockTable[index] = BLOCK_FREE; |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | |
| 213 | /* ²Á³ýÒ»¿é£¬ebnumΪ¿éºÅ */ |
| 214 | static int zftl_erase_block(nand_info_t *nand, uint32_t ebnum) |
| 215 | { |
| 216 | int err = -1; |
| 217 | struct erase_info ei; |
| 218 | uint32_t addr = ebnum * nand->erasesize; |
| 219 | |
| 220 | memset(&ei, 0, sizeof(struct erase_info)); |
| 221 | ei.mtd = nand; |
| 222 | ei.addr = (uint64_t)addr; |
| 223 | ei.len = (uint64_t)nand->erasesize; |
| 224 | |
| 225 | err = nand->_erase(nand, &ei); |
| 226 | if (err) |
| 227 | { |
| 228 | printk("[zftl_erase_block]: erasing %d error %d\n", ebnum, err); |
| 229 | return err; |
| 230 | } |
| 231 | |
| 232 | if (ei.state == MTD_ERASE_FAILED) |
| 233 | { |
| 234 | printk("[zftl_erase_block]: erasing %d\n",ebnum); |
| 235 | return -1; |
| 236 | } |
| 237 | return 0; |
| 238 | } |
| 239 | |
| 240 | |
| 241 | void zftl_garbage_collect(struct ZFTLrecord *zftl) |
| 242 | { |
| 243 | uint32_t block_num = zftl->numBlocks; |
| 244 | uint32_t firstBlock = zftl->firstBlock; |
| 245 | uint32_t index = 0; |
| 246 | nand_info_t *nand = zftl->nand; |
| 247 | |
| 248 | zftl_debug("\n"); |
| 249 | |
| 250 | for( index = 0; index < block_num; index++ ) |
| 251 | { |
| 252 | if( zftl->blockTable[index] == BLOCK_DIRTY ) |
| 253 | { |
| 254 | zftl_debug(" [zftl_garbage_collect] eraseblock zftl->blockTable[-%d-]\n", index); |
| 255 | if( zftl_erase_block(nand, firstBlock + index) ) |
| 256 | { |
| 257 | /* ²Á³ýʧ°Ü£¬±ê¼ÇΪ»µ¿ì */ |
| 258 | zftl_debug(" [zftl_garbage_collect] eraseblock zftl->blockTable[-%d-] ERROR\n", index); |
| 259 | zftl->blockTable[index] = BLOCK_BAD; |
| 260 | /* ±ê¼Ç»µ¿é£¬¸üлµ¿é±í mtd->erase ÖУ¬ÒÔ°üº¬²Á³ýʧ°Ü¸üÐÂBBT*/ |
| 261 | nand->_block_markbad(nand, (loff_t)((firstBlock + index) << zftl->erasesize_shift)); |
| 262 | } |
| 263 | else |
| 264 | { |
| 265 | /* ²Á³ý³É¹¦ */ |
| 266 | zftl->blockTable[index] = BLOCK_FREE;; |
| 267 | } |
| 268 | } |
| 269 | } |
| 270 | zftl_debug("\n"); |
| 271 | } |
| 272 | |
| 273 | |
| 274 | /* Added by zhouqi for xxx, 2014/04/23 */ |
| 275 | |
| 276 | static int zftl_find_free_block(struct ZFTLrecord *zftl, uint32_t *freeBlock) |
| 277 | { |
| 278 | uint32_t i = 2; |
| 279 | uint32_t index = 0; |
| 280 | uint32_t max = 0; |
| 281 | |
| 282 | do |
| 283 | { |
| 284 | index = zftl->lastFreeBlock; |
| 285 | max = zftl->numBlocks; |
| 286 | for( ; index < max; index++ ) |
| 287 | { |
| 288 | if( zftl->blockTable[index] == BLOCK_FREE ) |
| 289 | { |
| 290 | *freeBlock = index ; |
| 291 | zftl->lastFreeBlock = index + 1; |
| 292 | zftl_debug(" [zftl_find_free_block++] zftl->blockTable[ -%d- ] -BLOCK_FREE-\n", index - 1); |
| 293 | return 0; |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | max = zftl->lastFreeBlock; |
| 298 | index = 1; |
| 299 | for( ; index < max; index++ ) |
| 300 | { |
| 301 | if( zftl->blockTable[index - 1] == BLOCK_FREE ) |
| 302 | { |
| 303 | *freeBlock = index - 1; |
| 304 | zftl->lastFreeBlock = index; |
| 305 | zftl_debug(" [zftl_find_free_block--] zftl->blockTable[ -%d- ] -BLOCK_FREE-\n", index - 1); |
| 306 | return 0; |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | /* ûÓÐÕÒµ½¿ÕÏеĿ飬Ôò½øÐÐÀ¬»ø»ØÊÕ */ |
| 311 | zftl_debug(" [zftl_find_free_block] no free block --> zftl_garbage_collect()\n"); |
| 312 | zftl_garbage_collect(zftl); |
| 313 | } while( --i !=0 ); |
| 314 | |
| 315 | return 1; |
| 316 | } |
| 317 | |
| 318 | |
| 319 | void zftl_pack_tags(struct zftl_packed_tags *pt, |
| 320 | struct zftl_oob *t) |
| 321 | { |
| 322 | memcpy((uint8_t *)&(pt->t),(uint8_t *)t,sizeof(struct zftl_oob)); |
| 323 | zftl_ecc_calc_other((uint8_t *)&pt->t, |
| 324 | sizeof(struct zftl_oob), |
| 325 | &pt->ecc); |
| 326 | |
| 327 | } |
| 328 | |
| 329 | static uint32_t is_erased(uint8_t *buf, int len) |
| 330 | { |
| 331 | int i = 0; |
| 332 | for (i = 0; i < len; i++) |
| 333 | if (buf[i] != 0xFF) |
| 334 | return 0; |
| 335 | return 1; |
| 336 | } |
| 337 | |
| 338 | int zftl_unpack_tags(struct zftl_packed_tags *pt) |
| 339 | { |
| 340 | enum zftl_ecc_result ecc_result = ZFTL_ECC_RESULT_NO_ERROR; |
| 341 | struct zftl_ecc_other ecc; |
| 342 | int result; |
| 343 | |
| 344 | |
| 345 | zftl_ecc_calc_other((unsigned char *)&pt->t, |
| 346 | sizeof(struct zftl_oob), |
| 347 | &ecc); |
| 348 | result = zftl_ecc_correct_other((unsigned char *)&pt->t,\ |
| 349 | sizeof(struct zftl_oob),\ |
| 350 | &pt->ecc, &ecc); |
| 351 | switch (result) { |
| 352 | case 0: |
| 353 | ecc_result = ZFTL_ECC_RESULT_NO_ERROR; |
| 354 | //printf("ZFTL_ECC_RESULT_NO_ERROR\n"); |
| 355 | break; |
| 356 | case 1: |
| 357 | |
| 358 | ecc_result = ZFTL_ECC_RESULT_FIXED; |
| 359 | printk("ZFTL_ECC_RESULT_FIXED\n"); |
| 360 | |
| 361 | break; |
| 362 | case -1: |
| 363 | if(!is_erased((unsigned char *)pt,sizeof(struct zftl_packed_tags))) |
| 364 | { |
| 365 | ecc_result = ZFTL_ECC_RESULT_UNFIXED; |
| 366 | |
| 367 | //printk("ZFTL_ECC_RESULT_UNFIXED\n"); |
| 368 | } |
| 369 | |
| 370 | break; |
| 371 | default: |
| 372 | ecc_result = ZFTL_ECC_RESULT_UNKNOWN; |
| 373 | printk("ZFTL_ECC_RESULT_UNKNOWN\n"); |
| 374 | } |
| 375 | if(ecc_result==ZFTL_ECC_RESULT_UNFIXED) |
| 376 | { |
| 377 | |
| 378 | return -1; |
| 379 | } |
| 380 | else |
| 381 | { |
| 382 | return 0; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | |
| 387 | static int zftl_write_block(nand_info_t *nand, uint32_t offs, size_t *retlen, |
| 388 | struct zftl_oob *oob, u_char *buf) |
| 389 | { |
| 390 | struct mtd_oob_ops ops; |
| 391 | int32_t res = 0; |
| 392 | uint32_t offset = offs; |
| 393 | size_t ret_len = 0; |
| 394 | size_t pagesize = nand->writesize; |
| 395 | |
| 396 | |
| 397 | #ifdef CONFIG_ZFTL_ENABLE_OOB_ECC |
| 398 | struct zftl_packed_tags pt; |
| 399 | zftl_pack_tags(&pt,oob); |
| 400 | #endif |
| 401 | |
| 402 | /* write the remain */ |
| 403 | res = nand->_write(nand, (loff_t)(offset + nand->writesize), nand->erasesize - pagesize, |
| 404 | &ret_len, (u_char *)(buf + pagesize) ); |
| 405 | |
| 406 | /* write the first page of the block write the oob */ |
| 407 | ops.mode = MTD_OPS_AUTO_OOB; |
| 408 | ops.ooboffs = 0; |
| 409 | |
| 410 | #ifdef CONFIG_ZFTL_ENABLE_OOB_ECC |
| 411 | ops.ooblen = sizeof(struct zftl_packed_tags); |
| 412 | ops.oobbuf = (uint8_t *)&pt; |
| 413 | #else |
| 414 | ops.ooblen = sizeof(struct zftl_oob); |
| 415 | ops.oobbuf = (uint8_t *)oob; |
| 416 | #endif |
| 417 | ops.datbuf = buf; |
| 418 | ops.len = pagesize; |
| 419 | res += nand->_write_oob(nand, (loff_t)offset, &ops); |
| 420 | *retlen = ops.retlen + ret_len; |
| 421 | return res; |
| 422 | } |
| 423 | |
| 424 | |
| 425 | |
| 426 | int zftl_write(struct ZFTLrecord *zftl, uint32_t to, uint32_t len, u_char *buf) |
| 427 | { |
| 428 | int ret = 0; |
| 429 | uint32_t offset_block_phy = 0; |
| 430 | uint32_t block_new = 0; |
| 431 | size_t retlen = 0; |
| 432 | u_char *buffer = buf; |
| 433 | struct zftl_oob *oob = (struct zftl_oob *)zftl->oobbuf; |
| 434 | uint32_t block_offset = 0; |
| 435 | uint32_t erasesize_shift = zftl->erasesize_shift; |
| 436 | uint32_t block_log = 0; |
| 437 | uint32_t erasesize = zftl->erasesize; |
| 438 | uint32_t is_upthreshold = 0; |
| 439 | uint32_t oob_size = zftl->oobsize; |
| 440 | uint32_t firstBlock = zftl->firstBlock; |
| 441 | u_char *blockbuf = zftl->blockbuf; |
| 442 | |
| 443 | uint32_t left_to_write = len; |
| 444 | uint32_t write_length = 0; |
| 445 | uint32_t offset = to; |
| 446 | |
| 447 | nand_info_t *nand = zftl->nand; |
| 448 | |
| 449 | if((zftl == NULL) || (buf == NULL)) |
| 450 | { |
| 451 | BUG(); |
| 452 | } |
| 453 | |
| 454 | while(left_to_write > 0) |
| 455 | { |
| 456 | /* ¿Õ¼ä£¬³õʼ»¯Îª 0xFF */ |
| 457 | memset(blockbuf, 0xff, erasesize); |
| 458 | memset(oob, 0xff, oob_size); |
| 459 | |
| 460 | /* »ñÈ¡Âß¼¿é£¬¼°¿éÄÚÆ«ÒÆ */ |
| 461 | block_log = offset >> (zftl->erasesize_shift); |
| 462 | block_offset = offset & (zftl->erasesize - 1); /* ¿éÄÚµÄÆ«ÒƵØÖ· */ |
| 463 | |
| 464 | /* ÅжÏÂß¼¿éÊÇ·ñÓÐÎïÀí¶ÔÓ¦¿é£¬Èç¹ûÓУ¬ÔòΪ¸ÄдÊý¾Ý£»Èç¹ûûÓУ¬ÔòΪµÚÒ»´Îд´Ë¿é */ |
| 465 | if(zftl->blockRepTable[block_log] != BLOCK_NIL) |
| 466 | { |
| 467 | /* »ñÈ¡Âß¼¿é¶ÔÓ¦µÄÎïÀí¿é */ |
| 468 | offset_block_phy = zftl->blockRepTable[block_log]; |
| 469 | zftl_debug(" [zftl_write] zftl->blockRepTable[%d] = %d\n", block_log, offset_block_phy); |
| 470 | |
| 471 | /* Õû¸ö¶ÁÈ¡Ò»¿éÊý¾Ý */ |
| 472 | zftl_debug(" [zftl_read] nand->read( -0x%0x-, -0x%0x-)\n", |
| 473 | ((firstBlock + offset_block_phy) << erasesize_shift),erasesize); |
| 474 | ret = nand->_read(nand, ((firstBlock + offset_block_phy) << erasesize_shift), erasesize, &retlen, blockbuf); |
| 475 | if (ret || retlen != erasesize) |
| 476 | { |
| 477 | printk(KERN_ERR"[zfltl]: -zftl_read- error\n"); |
| 478 | #ifdef CONFIG_MTD_NVRESUME |
| 479 | if((!zOss_NvInResume())&&(zftl==zftl_info[1])&&(zftl_res != 1)) |
| 480 | { |
| 481 | return -1; |
| 482 | } |
| 483 | #endif |
| 484 | } |
| 485 | |
| 486 | /* ¶ÁÈ¡ÕâÒ»¿éµÄOOBÐÅÏ¢£¬²¢¸üРVERSION, Èç¹û´ïµ½°æ±¾ºÅµÄãÐÖµ£¬Ôò½øÐлØÊÕ */ |
| 487 | if(zftl_read_oob(zftl, ((firstBlock + offset_block_phy) << erasesize_shift), (uint8_t *)oob )) |
| 488 | { |
| 489 | printk(" [zftl_write] read oob error at = 0x%x\n", (offset_block_phy << erasesize_shift)); |
| 490 | //return -1; |
| 491 | } |
| 492 | if( oob->version == CONFIG_ZFLT_VERSION_THRESHOLD ) |
| 493 | { |
| 494 | zftl_debug(" [zftl_write] up to the -CONFIG_ZFLT_VERSION_THRESHOLD-\n"); |
| 495 | is_upthreshold = 1; |
| 496 | zftl_garbage_collect(zftl); |
| 497 | oob->version = 1; |
| 498 | } |
| 499 | else |
| 500 | { |
| 501 | |
| 502 | oob->version += 1; |
| 503 | zftl_debug(" [zftl_write] oob->version = %d,oob->logicBlockID = %d\n", oob->version,oob->logicBlockID); |
| 504 | } |
| 505 | |
| 506 | memcpy(oob->head, CONFIG_ZFLT_HEAD, CONFIG_ZFLT_HEAD_BYTE); /* ¿½±´zftlÍ· */ |
| 507 | oob->logicBlockID = block_log; |
| 508 | |
| 509 | /* Ìî³ä¸üРdata */ |
| 510 | if (left_to_write < (erasesize - block_offset)) |
| 511 | write_length = left_to_write; |
| 512 | else |
| 513 | write_length = nand->erasesize - block_offset; |
| 514 | |
| 515 | memcpy(blockbuf + block_offset, buffer, write_length); |
| 516 | zftl_debug(" [zftl_write] update the date ( -0x%0x-, -0x%0x- )\n", |
| 517 | block_offset, write_length); |
| 518 | |
| 519 | |
| 520 | /* Ñ°ÕÒÒ»¸ö FREE µÄÎïÀí¿é */ |
| 521 | find_next_free_block_1: |
| 522 | if( zftl_find_free_block(zftl, &block_new) )/* BLOCK_USED */ |
| 523 | { |
| 524 | /* ûÓÐÕÒµ½FREE¿é */ |
| 525 | printk(" [zftl_write] there is enough block, please enlarge the partition\n"); |
| 526 | return CAN_NOT_FIND_FREE_BLOCK; |
| 527 | } |
| 528 | |
| 529 | /* дÈëÒ»¿é */ |
| 530 | zftl_debug(" [zftl_write_block] nand->write( -0x%0x-, -0x%0x-)\n", |
| 531 | ((firstBlock + block_new) << erasesize_shift), erasesize); |
| 532 | |
| 533 | if( zftl_write_block(nand, (loff_t)((firstBlock + block_new) << erasesize_shift), &retlen, |
| 534 | oob, blockbuf) ) |
| 535 | { |
| 536 | /* дÊý¾Ýʧ°Üʱ£¬±ê¼ÇBBT£¬¸üРTABLE£¬ÖØвéÕÒеĿéд */ |
| 537 | printk(" -ERROR-\n"); |
| 538 | zftl->blockTable[block_new] = BLOCK_BAD; |
| 539 | nand->_block_markbad(nand, (loff_t)((firstBlock + block_new) << erasesize_shift)); |
| 540 | goto find_next_free_block_1; |
| 541 | } |
| 542 | |
| 543 | /* ¸üРblockRepTable¡¢blockTable */ |
| 544 | zftl->blockRepTable[oob->logicBlockID] = block_new; |
| 545 | |
| 546 | zftl_debug(" [zftl_write] zftl->blockRepTable[oob->logicBlockID] = %d,oob->logicBlockID = %d\n", zftl->blockRepTable[oob->logicBlockID],oob->logicBlockID); |
| 547 | |
| 548 | zftl->blockTable[block_new] = BLOCK_USED; |
| 549 | zftl->blockTable[offset_block_phy] = BLOCK_DIRTY; |
| 550 | |
| 551 | /* ¸üРblockRepTable¡¢blockTable */ |
| 552 | if( is_upthreshold == 1 ) |
| 553 | { |
| 554 | zftl_debug(" [zftl_write] ( is_upthreshold == 1 )\n"); |
| 555 | zftl_debug(" [zftl_write] eraseblock zftl->blockTable[-%d-]\n", offset_block_phy); |
| 556 | if( zftl_erase_block(nand, firstBlock + offset_block_phy) ) |
| 557 | { |
| 558 | /* ²Á³ýʧ°Ü£¬±ê¼ÇΪ»µ¿ì */ |
| 559 | zftl_debug(" [zftl_write] eraseblock zftl->blockTable[-%d-] ERROR!\n", |
| 560 | (firstBlock + offset_block_phy) << erasesize); |
| 561 | zftl->blockTable[offset_block_phy] = BLOCK_BAD; |
| 562 | nand->_block_markbad(nand, (loff_t)((firstBlock + offset_block_phy) << erasesize_shift)); /* ±ê¼Ç»µ¿é£¬¸üлµ¿é±í */ |
| 563 | } |
| 564 | else |
| 565 | zftl->blockTable[offset_block_phy] = BLOCK_FREE; |
| 566 | } |
| 567 | zftl_debug("\n"); |
| 568 | |
| 569 | left_to_write -= write_length; |
| 570 | offset += write_length; |
| 571 | buffer += write_length; |
| 572 | } |
| 573 | else /* zftl->blockRepTable[block_log] == BLOCK_NIL */ |
| 574 | { |
| 575 | /* ´ËÂß¼µØÖ·µÚÒ»´Î±»Ð´ÈëÊý¾Ý */ |
| 576 | zftl_debug(" [zftl_write] zftl->blockRepTable[%d] == BLOCK_NIL\n", block_log); |
| 577 | |
| 578 | /* ²¢¸üÐÂOOB */ |
| 579 | oob->logicBlockID = block_log; |
| 580 | oob->used = 0x1; |
| 581 | oob->version = 0x1; |
| 582 | memcpy(oob->head, CONFIG_ZFLT_HEAD, CONFIG_ZFLT_HEAD_BYTE); /* ¿½±´zftlÍ· */ |
| 583 | |
| 584 | /* Ìî³ä¸üРdata */ |
| 585 | if (left_to_write < (erasesize - block_offset)) |
| 586 | write_length = left_to_write; |
| 587 | else |
| 588 | write_length = nand->erasesize - block_offset; |
| 589 | |
| 590 | memcpy(blockbuf + block_offset, buffer, write_length); |
| 591 | zftl_debug(" [zftl_write] update the date ( -0x%0x-, -0x%0x- )\n", |
| 592 | block_offset, write_length); |
| 593 | |
| 594 | /* Ñ°ÕÒÒ»¸ö FREE µÄÎïÀí¿é */ |
| 595 | find_next_free_block_2: |
| 596 | if( zftl_find_free_block(zftl, &block_new) ) |
| 597 | { |
| 598 | /* ûÓÐÕÒµ½FREE¿é */ |
| 599 | printk(" [zftl_write] there is enough block, please enlarge the partition\n"); |
| 600 | return CAN_NOT_FIND_FREE_BLOCK; |
| 601 | } |
| 602 | |
| 603 | /* дÈëÒ»¿é */ |
| 604 | zftl_debug(" [zftl_write_block] nand->write( -0x%0x-, -0x%0x-)\n", |
| 605 | ((firstBlock + block_new) << erasesize_shift), erasesize); |
| 606 | |
| 607 | if( zftl_write_block(nand, (loff_t)((firstBlock + block_new) << erasesize_shift), &retlen, |
| 608 | oob, blockbuf) ) |
| 609 | { |
| 610 | /* дÊý¾Ýʧ°Üʱ£¬±ê¼ÇBBT£¬¸üРTABLE£¬ÖØвéÕÒеĿéд */ |
| 611 | printk(" -ERROR-\n"); |
| 612 | zftl->blockTable[block_new] = BLOCK_BAD; |
| 613 | nand->_block_markbad(nand, (loff_t)((firstBlock + block_new) << erasesize_shift)); |
| 614 | goto find_next_free_block_2; |
| 615 | } |
| 616 | |
| 617 | /* ¸üРblockRepTable¡¢blockTable */ |
| 618 | zftl->blockRepTable[oob->logicBlockID] = block_new; |
| 619 | |
| 620 | zftl_debug(" [zftl_write2] zftl->blockRepTable[oob->logicBlockID] = %d,oob->logicBlockID = %d\n", zftl->blockRepTable[oob->logicBlockID],oob->logicBlockID); |
| 621 | |
| 622 | zftl->blockTable[block_new] = BLOCK_USED; |
| 623 | |
| 624 | zftl_debug("\n"); |
| 625 | |
| 626 | left_to_write -= write_length; |
| 627 | offset += write_length; |
| 628 | buffer += write_length; |
| 629 | } |
| 630 | |
| 631 | } |
| 632 | |
| 633 | /* Added by zhouqi for xxx, 2014/04/23 */ |
| 634 | zftl_garbage_collect(zftl); |
| 635 | zftl_debug("\n"); |
| 636 | |
| 637 | return 0; |
| 638 | } |
| 639 | |
| 640 | |
| 641 | int zftl_read(struct ZFTLrecord *zftl, uint32_t from, uint32_t len, u_char *buffer) |
| 642 | { |
| 643 | int ret = 0; |
| 644 | uint32_t offset_block_phy; |
| 645 | uint32_t left_to_read = len; |
| 646 | uint32_t read_length = 0; |
| 647 | uint32_t retlen = 0; |
| 648 | u_char *buf = buffer; |
| 649 | uint32_t offset = from; |
| 650 | uint32_t block_offset = 0; |
| 651 | uint32_t block_log = 0; |
| 652 | uint32_t erasesize = zftl->erasesize; |
| 653 | uint32_t erasesize_shift = zftl->erasesize_shift; |
| 654 | nand_info_t *nand = zftl->nand; |
| 655 | uint32_t firstBlock = zftl->firstBlock; |
| 656 | |
| 657 | if((zftl == NULL) || (buf == NULL)) |
| 658 | { |
| 659 | BUG(); |
| 660 | } |
| 661 | |
| 662 | while( left_to_read > 0 ) |
| 663 | { |
| 664 | block_offset = offset & (zftl->erasesize - 1); |
| 665 | block_log = offset >> zftl->erasesize_shift; |
| 666 | |
| 667 | /* »ñÈ¡Âß¼¿é¶ÔÓ¦µÄÎïÀí¿é */ |
| 668 | if( zftl->blockRepTable[block_log] != BLOCK_NIL ) |
| 669 | offset_block_phy = zftl->blockRepTable[block_log]; |
| 670 | else |
| 671 | { |
| 672 | /* µ±Ã»ÓÐдÈëÊý¾Ýʱ£¬Ã»ÓÐÓ³Éä¹Øϵ£¬¶ÁÈ¡Êý¾ÝȫΪ 0XFF */ |
| 673 | |
| 674 | if (left_to_read < (erasesize - block_offset)) |
| 675 | read_length = left_to_read; |
| 676 | else |
| 677 | read_length = nand->erasesize - block_offset; |
| 678 | |
| 679 | memset(buf, 0xff, read_length); |
| 680 | |
| 681 | left_to_read -= read_length; |
| 682 | offset += read_length; |
| 683 | buf += read_length; |
| 684 | |
| 685 | continue; |
| 686 | |
| 687 | } |
| 688 | |
| 689 | if (left_to_read < (erasesize - block_offset)) |
| 690 | read_length = left_to_read; |
| 691 | else |
| 692 | read_length = nand->erasesize - block_offset; |
| 693 | |
| 694 | |
| 695 | zftl_debug(" [zftl_read] nand->read( -0x%0x-, -0x%0x-)\n", |
| 696 | ((firstBlock + offset_block_phy) << erasesize_shift) + block_offset, |
| 697 | read_length); |
| 698 | ret = nand->_read(nand, ((firstBlock + offset_block_phy) << erasesize_shift) + block_offset, |
| 699 | read_length, &retlen, buf); |
| 700 | if (ret || retlen != read_length) |
| 701 | { |
| 702 | printk(KERN_ERR"[zfltl]: -zftl_read- error\n"); |
| 703 | //return -1; |
| 704 | #ifdef CONFIG_MTD_NVRESUME |
| 705 | if((!zOss_NvInResume())&&(zftl==zftl_info[1])&&(zftl_res != 1)) |
| 706 | { |
| 707 | return -1; |
| 708 | } |
| 709 | #endif |
| 710 | } |
| 711 | |
| 712 | left_to_read -= read_length; |
| 713 | offset += read_length; |
| 714 | buf += read_length; |
| 715 | } |
| 716 | |
| 717 | zftl_debug("\n"); |
| 718 | return 0; |
| 719 | } |
| 720 | |
| 721 | |
| 722 | struct ZFTLrecord * zftl_get_ZFTLrecord_byname(char* part_name) |
| 723 | { |
| 724 | uint32_t i; |
| 725 | |
| 726 | for(i = 0; zftl_partition_name[i] != NULL; i++ ) |
| 727 | { |
| 728 | if(zftl_info[i]!=NULL) |
| 729 | { |
| 730 | if(strcmp(zftl_info[i]->mbd.mtd->name, part_name) == 0) |
| 731 | { |
| 732 | return zftl_info[i]; |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | } |
| 737 | return NULL; |
| 738 | } |
| 739 | |
| 740 | |
| 741 | int zftl_init(unsigned char *part_name,struct ZFTLrecord *zftlinfo ) |
| 742 | { |
| 743 | nand_info_t *nand = mtd_fota; |
| 744 | //uint32_t i, j,k, block; |
| 745 | uint32_t k = 0; |
| 746 | struct ZFTLrecord *zftl = NULL; |
| 747 | uint32_t partition_size = 0; |
| 748 | uint32_t partition_offest = 0; |
| 749 | struct cmdline_mtd_partition *part; |
| 750 | |
| 751 | printk( "zftl[%d] is %s\n",partnum,part_name); |
| 752 | |
| 753 | /* ZFTLrecord½á¹¹ÌåÄÚ´æÉêÇë */ |
| 754 | zftl_info[partnum] = zftlinfo; |
| 755 | if (!zftl_info[partnum]) |
| 756 | { |
| 757 | printk( "zftl: out of memory for data structure ZFTLrecord\n"); |
| 758 | return 1; |
| 759 | } |
| 760 | zftl = zftl_info[partnum]; |
| 761 | |
| 762 | zftl->nand = nand; |
| 763 | zftl->erasesize = nand->erasesize; |
| 764 | zftl->writesize = nand->writesize; |
| 765 | zftl->erasesize_shift = ffs(nand->erasesize) - 1; |
| 766 | zftl->writesize_shift = ffs(nand->writesize) - 1; |
| 767 | zftl->oobsize = nand->oobsize; |
| 768 | |
| 769 | part = partitions; |
| 770 | |
| 771 | for(k=0;k<part->num_parts;k++) |
| 772 | { |
| 773 | if ( strcmp( (char *)part->parts[k].name, part_name ) == 0 ) |
| 774 | break; |
| 775 | |
| 776 | } /* nvr */ |
| 777 | |
| 778 | partition_offest = part->parts[k].offset; |
| 779 | partition_size = part->parts[k].size; |
| 780 | |
| 781 | if ( strcmp(part_name,"cdrom") == 0 ) |
| 782 | { |
| 783 | cdrom_partsize = partition_size; |
| 784 | } |
| 785 | |
| 786 | if ( strcmp(part_name,"nvro") == 0 ) |
| 787 | { |
| 788 | nvro_partsize = partition_size; |
| 789 | printk("nvro_partsize=0x%0x\n",nvro_partsize); |
| 790 | } |
| 791 | |
| 792 | if ( strcmp(part_name,"nvrwo") == 0 ) |
| 793 | { |
| 794 | nvrwo_partsize = partition_size; |
| 795 | printk("nvrwo_partsize=0x%0x\n",nvrwo_partsize); |
| 796 | } |
| 797 | |
| 798 | zftl->firstBlock= partition_offest >> zftl->erasesize_shift; /* ¾ßÌåµÄÊýÖµ´Ó·ÖÇøÖлñµÃ */ |
| 799 | zftl->numBlocks = partition_size / zftl->erasesize; /* ÔõôȷÈÏÇøÓò·¶Î§ zhouqi,ʵ¼ÊʹÓÃʱ¿éºÅÒª -1 ?*/ |
| 800 | |
| 801 | /* ¿é»º´æÉêÇë */ |
| 802 | zftl->blockbuf = kmalloc(zftl->erasesize, GFP_KERNEL); |
| 803 | if (!zftl->blockbuf) |
| 804 | { |
| 805 | printk( "zftl: out of memory for data structure blockbuf\n"); |
| 806 | goto failed_alloc_blockbuf; |
| 807 | } |
| 808 | |
| 809 | /* OOB»º´æÉêÇë */ |
| 810 | zftl->oobbuf = kmalloc(zftl->oobsize, GFP_KERNEL); |
| 811 | if (!zftl->oobbuf) |
| 812 | { |
| 813 | printk( "zftl: out of memory for data oobbuf\n"); |
| 814 | goto failed_alloc_oobbuf; |
| 815 | } |
| 816 | |
| 817 | /* blockRepTable±íÄÚ´æÉêÇë, ³õʼ»¯Îª 0xFFFF*/ |
| 818 | zftl->blockRepTable = kmalloc(zftl->numBlocks * sizeof(zftl->blockRepTable), GFP_KERNEL); |
| 819 | if (!zftl->blockRepTable) |
| 820 | { |
| 821 | printk( "zftl: out of memory for data structure blockRepTable\n"); |
| 822 | goto failed_alloc_blockreptable; |
| 823 | } |
| 824 | memset(zftl->blockRepTable, 0xff, zftl->numBlocks * sizeof(zftl->blockRepTable)); |
| 825 | |
| 826 | /* versionTable±íÄÚ´æÉêÇë */ |
| 827 | /* ³õʼ»¯Îª¶¼Îª0£¬NANDÖеÄÊý¾Ýversion×îСΪ 1 */ |
| 828 | zftl->versionTable = kzalloc(zftl->numBlocks * sizeof(zftl->versionTable), GFP_KERNEL); |
| 829 | if (!zftl->versionTable) |
| 830 | { |
| 831 | printk( "zftl: out of memory for data structure versionTable\n"); |
| 832 | goto failed_alloc_versionTable; |
| 833 | } |
| 834 | |
| 835 | /* blockTable±íÄÚ´æÉêÇë */ |
| 836 | zftl->blockTable = kzalloc(zftl->numBlocks * sizeof(zftl->blockTable), GFP_KERNEL); |
| 837 | if (!zftl->blockTable) |
| 838 | { |
| 839 | printk( "zftl: out of memory for data structure blockTable\n"); |
| 840 | goto failed_alloc_blocktable; |
| 841 | } |
| 842 | |
| 843 | /* ·ÖÎö¹ÒÔØzftl·ÖÇø£¬½¨Á¢ÄÚ´æ±í */ |
| 844 | if ( zftl_setup_table((zftl), &zftl->is_writed)) |
| 845 | { |
| 846 | printk( "zftl: could not mount device\n"); |
| 847 | goto failed_setup_table; |
| 848 | } |
| 849 | |
| 850 | zftl_debug(" [zftl_init] is_writed[%d] = %d\n", partnum, zftl->is_writed); |
| 851 | partnum++; |
| 852 | if(!mutex_inited) |
| 853 | { |
| 854 | mutex_init(&zftl_mutex); |
| 855 | mutex_inited = 1; |
| 856 | } |
| 857 | return 0; |
| 858 | |
| 859 | failed_setup_table: |
| 860 | kfree(zftl->blockTable); |
| 861 | failed_alloc_blocktable: |
| 862 | kfree(zftl->versionTable); |
| 863 | failed_alloc_versionTable: |
| 864 | kfree(zftl->blockRepTable); |
| 865 | failed_alloc_blockreptable: |
| 866 | kfree(zftl->oobbuf); |
| 867 | failed_alloc_oobbuf: |
| 868 | kfree(zftl->blockbuf); |
| 869 | failed_alloc_blockbuf: |
| 870 | kfree(zftl); |
| 871 | return 1; |
| 872 | } |
| 873 | |
| 874 | static void zftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) |
| 875 | { |
| 876 | uint32_t i; |
| 877 | struct ZFTLrecord *zftl = NULL; |
| 878 | |
| 879 | for(i=0; zftl_partition_name[i] != NULL; i++) |
| 880 | { |
| 881 | |
| 882 | if(strcmp(mtd->name, zftl_partition_name[i]) == 0) |
| 883 | { |
| 884 | |
| 885 | break; |
| 886 | } |
| 887 | } |
| 888 | |
| 889 | if(zftl_partition_name[i] == NULL) |
| 890 | { |
| 891 | return; |
| 892 | } |
| 893 | |
| 894 | zftl = kzalloc(sizeof(struct ZFTLrecord), GFP_KERNEL); |
| 895 | if (!zftl) |
| 896 | { |
| 897 | kfree(zftl); |
| 898 | return; |
| 899 | } |
| 900 | zftl->mbd.mtd = mtd; |
| 901 | zftl->mbd.devnum = mtd->index; |
| 902 | zftl->mbd.tr = tr; |
| 903 | zftl->mbd.size = mtd->size >> 12; |
| 904 | |
| 905 | zftl_init(mtd->name,zftl); |
| 906 | |
| 907 | if (add_mtd_blktrans_dev(&zftl->mbd)) |
| 908 | { |
| 909 | kfree(zftl); |
| 910 | } |
| 911 | |
| 912 | return; |
| 913 | } |
| 914 | static void zftl_remove_dev(struct mtd_blktrans_dev *dev) |
| 915 | { |
| 916 | del_mtd_blktrans_dev(dev); |
| 917 | } |
| 918 | static int zftl_readblock(struct mtd_blktrans_dev *mbd, unsigned long block, |
| 919 | char *buffer) |
| 920 | { |
| 921 | struct ZFTLrecord *zftl = NULL; |
| 922 | int ret = 0; |
| 923 | |
| 924 | mutex_lock(&zftl_mutex); |
| 925 | |
| 926 | zftl = zftl_get_ZFTLrecord_byname(mbd->mtd->name); |
| 927 | if(!zftl) |
| 928 | { |
| 929 | mutex_unlock(&zftl_mutex); |
| 930 | return -2; |
| 931 | } |
| 932 | ret = zftl_read(zftl, block<<12, (uint32_t)4096, (u_char *)buffer); |
| 933 | mutex_unlock(&zftl_mutex); |
| 934 | return ret; |
| 935 | } |
| 936 | |
| 937 | static int zftl_writeblock(struct mtd_blktrans_dev *mbd, unsigned long block, |
| 938 | char *buffer) |
| 939 | { |
| 940 | struct ZFTLrecord *zftl = NULL; |
| 941 | int ret = 0; |
| 942 | |
| 943 | mutex_lock(&zftl_mutex); |
| 944 | |
| 945 | zftl = zftl_get_ZFTLrecord_byname(mbd->mtd->name); |
| 946 | if(!zftl) |
| 947 | { |
| 948 | mutex_unlock(&zftl_mutex); |
| 949 | return -2; |
| 950 | } |
| 951 | ret = zftl_write(zftl, block<<12, (uint32_t)4096, (u_char *)buffer); |
| 952 | mutex_unlock(&zftl_mutex); |
| 953 | return ret; |
| 954 | } |
| 955 | |
| 956 | int zftl_wrapper_write(char *part_name, int dwStart, int dwLen, char* from) |
| 957 | { |
| 958 | int ret = 0; |
| 959 | struct ZFTLrecord *zftl = NULL; |
| 960 | |
| 961 | mutex_lock(&zftl_mutex); |
| 962 | |
| 963 | if((part_name == NULL) || (from == NULL)) |
| 964 | { |
| 965 | mutex_unlock(&zftl_mutex); |
| 966 | return -5; |
| 967 | } |
| 968 | |
| 969 | zftl = zftl_get_ZFTLrecord_byname(part_name); |
| 970 | if(zftl == NULL) |
| 971 | { |
| 972 | BUG(); |
| 973 | mutex_unlock(&zftl_mutex); |
| 974 | return -1; //×ö¶ÏÑÔ |
| 975 | } |
| 976 | |
| 977 | ret = zftl_write(zftl, dwStart, dwLen, from); |
| 978 | if(ret != 0) |
| 979 | { |
| 980 | mutex_unlock(&zftl_mutex); |
| 981 | return ret; |
| 982 | } |
| 983 | |
| 984 | mutex_unlock(&zftl_mutex); |
| 985 | |
| 986 | return 0; |
| 987 | } |
| 988 | EXPORT_SYMBOL_GPL(zftl_wrapper_write); |
| 989 | |
| 990 | int zftl_wrapper_read(char *part_name, int dwStart, int dwLen, char* to) |
| 991 | { |
| 992 | int ret = 0; |
| 993 | struct ZFTLrecord *zftl = NULL; |
| 994 | |
| 995 | mutex_lock(&zftl_mutex); |
| 996 | |
| 997 | if((part_name == NULL) || (to == NULL)) |
| 998 | { |
| 999 | mutex_unlock(&zftl_mutex); |
| 1000 | return -5; |
| 1001 | } |
| 1002 | |
| 1003 | zftl = zftl_get_ZFTLrecord_byname(part_name); |
| 1004 | if(zftl == NULL) |
| 1005 | |
| 1006 | { |
| 1007 | BUG(); |
| 1008 | mutex_unlock(&zftl_mutex); |
| 1009 | return -1; //×ö¶ÏÑÔ |
| 1010 | } |
| 1011 | |
| 1012 | ret = zftl_read(zftl, dwStart, dwLen, to); |
| 1013 | if(ret != 0) |
| 1014 | { |
| 1015 | mutex_unlock(&zftl_mutex); |
| 1016 | return ret; |
| 1017 | } |
| 1018 | |
| 1019 | mutex_unlock(&zftl_mutex); |
| 1020 | return 0; |
| 1021 | } |
| 1022 | EXPORT_SYMBOL_GPL(zftl_wrapper_read); |
| 1023 | |
| 1024 | int nand_NvRead(int dwStart, int dwLen, char* to) |
| 1025 | { |
| 1026 | mutex_lock(&zftl_mutex); |
| 1027 | struct ZFTLrecord *zftl = NULL; |
| 1028 | int ret = 0; |
| 1029 | |
| 1030 | if( dwStart < nvro_partsize ) |
| 1031 | { |
| 1032 | zftl = zftl_get_ZFTLrecord_byname("nvro"); /*NVR,0~1M*/ |
| 1033 | } |
| 1034 | else if( dwStart < nvro_partsize + nvrwo_partsize) |
| 1035 | { |
| 1036 | zftl = zftl_get_ZFTLrecord_byname("nvrwo"); /*NVR,0~1M*/ |
| 1037 | dwStart -= nvro_partsize; |
| 1038 | } |
| 1039 | else |
| 1040 | { |
| 1041 | zftl = zftl_get_ZFTLrecord_byname("nvrw"); /* NVRW, 1~5M*/ |
| 1042 | dwStart = dwStart - nvro_partsize - nvrwo_partsize; |
| 1043 | } |
| 1044 | if(!zftl) |
| 1045 | { |
| 1046 | mutex_unlock(&zftl_mutex); |
| 1047 | return -2; |
| 1048 | } |
| 1049 | ret = zftl_read(zftl, (uint32_t)dwStart, (uint32_t)dwLen, (u_char*)to); |
| 1050 | mutex_unlock(&zftl_mutex); |
| 1051 | |
| 1052 | return ret; |
| 1053 | |
| 1054 | } |
| 1055 | EXPORT_SYMBOL_GPL(nand_NvRead); |
| 1056 | |
| 1057 | int nand_NvProgram(int dwStart, int dwLen, char* from) |
| 1058 | { |
| 1059 | mutex_lock(&zftl_mutex); |
| 1060 | struct ZFTLrecord *zftl = NULL; |
| 1061 | int ret = 0; |
| 1062 | |
| 1063 | if( dwStart < nvro_partsize ) |
| 1064 | { |
| 1065 | zftl = zftl_get_ZFTLrecord_byname("nvro"); /*NVR,0~1M*/ |
| 1066 | } |
| 1067 | else if( dwStart < nvro_partsize + nvrwo_partsize) |
| 1068 | { |
| 1069 | zftl = zftl_get_ZFTLrecord_byname("nvrwo"); /*NVR,0~1M*/ |
| 1070 | dwStart -= nvro_partsize; |
| 1071 | } |
| 1072 | else |
| 1073 | { |
| 1074 | zftl = zftl_get_ZFTLrecord_byname("nvrw"); /* NVRW, 1~5M*/ |
| 1075 | dwStart = dwStart - nvro_partsize - nvrwo_partsize; |
| 1076 | } |
| 1077 | if(!zftl) |
| 1078 | { |
| 1079 | mutex_unlock(&zftl_mutex); |
| 1080 | return -2; |
| 1081 | } |
| 1082 | ret = zftl_write(zftl, (uint32_t)dwStart, (uint32_t)dwLen, (u_char*)from); |
| 1083 | mutex_unlock(&zftl_mutex); |
| 1084 | return ret; |
| 1085 | } |
| 1086 | EXPORT_SYMBOL_GPL(nand_NvProgram); |
| 1087 | |
| 1088 | int nand_CdromRead(void *devData,void *buffer, uint32_t blkcnt, uint32_t pos ) |
| 1089 | { |
| 1090 | mutex_lock(&zftl_mutex); |
| 1091 | struct ZFTLrecord *zftl = NULL; |
| 1092 | int ret = 0; |
| 1093 | |
| 1094 | zftl = zftl_get_ZFTLrecord_byname("cdrom"); |
| 1095 | if(!zftl) |
| 1096 | { |
| 1097 | mutex_unlock(&zftl_mutex); |
| 1098 | return -2; |
| 1099 | } |
| 1100 | ret = zftl_read(zftl, (pos<<9), (uint32_t)(blkcnt<<9), (u_char *)buffer); |
| 1101 | if(ret == 0) |
| 1102 | { |
| 1103 | ret = blkcnt; |
| 1104 | } |
| 1105 | mutex_unlock(&zftl_mutex); |
| 1106 | return ret; |
| 1107 | |
| 1108 | } |
| 1109 | EXPORT_SYMBOL_GPL(nand_CdromRead); |
| 1110 | |
| 1111 | int nand_CdromProgram(void *devData,void *buffer, uint32_t blkcnt, uint32_t pos) |
| 1112 | { |
| 1113 | mutex_lock(&zftl_mutex); |
| 1114 | struct ZFTLrecord *zftl = NULL; |
| 1115 | int ret = 0; |
| 1116 | |
| 1117 | zftl = zftl_get_ZFTLrecord_byname("cdrom"); |
| 1118 | if(!zftl) |
| 1119 | { |
| 1120 | mutex_unlock(&zftl_mutex); |
| 1121 | return -2; |
| 1122 | } |
| 1123 | ret = zftl_write(zftl, (pos<<9), (uint32_t)(blkcnt<<9), (u_char *)buffer); |
| 1124 | |
| 1125 | if(ret == 0) |
| 1126 | { |
| 1127 | ret = blkcnt; |
| 1128 | } |
| 1129 | mutex_unlock(&zftl_mutex); |
| 1130 | return ret; |
| 1131 | } |
| 1132 | EXPORT_SYMBOL_GPL(nand_CdromProgram); |
| 1133 | int nand_SmsRead(int dwStart, int dwLen, char* to) |
| 1134 | { |
| 1135 | mutex_lock(&zftl_mutex); |
| 1136 | struct ZFTLrecord *zftl = NULL; |
| 1137 | int ret = 0; |
| 1138 | |
| 1139 | zftl = zftl_get_ZFTLrecord_byname("sms"); |
| 1140 | if(!zftl) |
| 1141 | { |
| 1142 | mutex_unlock(&zftl_mutex); |
| 1143 | return -2; |
| 1144 | } |
| 1145 | ret = zftl_read(zftl, (uint32_t)dwStart, (uint32_t)dwLen, (u_char*)to); |
| 1146 | mutex_unlock(&zftl_mutex); |
| 1147 | return ret; |
| 1148 | |
| 1149 | } |
| 1150 | EXPORT_SYMBOL_GPL(nand_SmsRead); |
| 1151 | |
| 1152 | int nand_SmsProgram(int dwStart, int dwLen, char* from) |
| 1153 | { |
| 1154 | mutex_lock(&zftl_mutex); |
| 1155 | struct ZFTLrecord *zftl = NULL; |
| 1156 | int ret = 0; |
| 1157 | |
| 1158 | zftl = zftl_get_ZFTLrecord_byname("sms"); |
| 1159 | if(!zftl) |
| 1160 | { |
| 1161 | mutex_unlock(&zftl_mutex); |
| 1162 | return -2; |
| 1163 | } |
| 1164 | ret = zftl_write(zftl, (uint32_t)dwStart, (uint32_t)dwLen, (u_char*)from); |
| 1165 | mutex_unlock(&zftl_mutex); |
| 1166 | return ret; |
| 1167 | } |
| 1168 | EXPORT_SYMBOL_GPL(nand_SmsProgram); |
| 1169 | |
| 1170 | int nand_ResetFlagProgram(int dwStart, int dwLen, char* from) |
| 1171 | { |
| 1172 | mutex_lock(&zftl_mutex); |
| 1173 | struct ZFTLrecord *zftl = NULL; |
| 1174 | int ret = 0; |
| 1175 | |
| 1176 | |
| 1177 | //zftl = zftl_info[2]; /* fotaflag */ |
| 1178 | zftl = zftl_get_ZFTLrecord_byname("fotaflag"); |
| 1179 | if(!zftl) |
| 1180 | { |
| 1181 | mutex_unlock(&zftl_mutex); |
| 1182 | return -2; |
| 1183 | } |
| 1184 | ret = zftl_write(zftl, (uint32_t)dwStart, (uint32_t)dwLen, (u_char*)from); |
| 1185 | mutex_unlock(&zftl_mutex); |
| 1186 | |
| 1187 | return ret; |
| 1188 | } |
| 1189 | EXPORT_SYMBOL_GPL(nand_ResetFlagProgram); |
| 1190 | |
| 1191 | static struct mtd_blktrans_ops zftl_tr = { |
| 1192 | .name = "zftl", |
| 1193 | .major = 35, |
| 1194 | .part_bits = 0, |
| 1195 | .blksize = 4096, |
| 1196 | .readsect = zftl_readblock, |
| 1197 | .writesect = zftl_writeblock, |
| 1198 | .add_mtd = zftl_add_mtd, |
| 1199 | .remove_dev = zftl_remove_dev, |
| 1200 | .owner = THIS_MODULE, |
| 1201 | }; |
| 1202 | |
| 1203 | static int __init init_zftl(void) |
| 1204 | { |
| 1205 | return register_mtd_blktrans(&zftl_tr); |
| 1206 | } |
| 1207 | |
| 1208 | static void __exit cleanup_zftl(void) |
| 1209 | { |
| 1210 | deregister_mtd_blktrans(&zftl_tr); |
| 1211 | } |
| 1212 | |
| 1213 | module_init(init_zftl); |
| 1214 | module_exit(cleanup_zftl); |
| 1215 | |
| 1216 | MODULE_LICENSE("GPL"); |
| 1217 | MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>, Fabrice Bellard <fabrice.bellard@netgem.com> et al."); |
| 1218 | MODULE_DESCRIPTION("Support code for NAND Flash Translation Layer, used on M-Systems DiskOnChip 2000 and Millennium"); |
| 1219 | |
| 1220 | |
| 1221 | |
| 1222 | |
| 1223 | |
| 1224 | |
| 1225 | |