David Woodhouse | b589aec | 2009-10-14 23:09:13 +0100 | [diff] [blame] | 1 | /* |
| 2 | * NAND Flash Controller Device Driver |
| 3 | * Copyright (c) 2009, Intel Corporation and its suppliers. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | #include <linux/fs.h> |
| 21 | #include <linux/slab.h> |
| 22 | #include <linux/mtd/mtd.h> |
| 23 | #include "flash.h" |
| 24 | #include "ffsdefs.h" |
| 25 | #include "lld_emu.h" |
| 26 | #include "lld.h" |
| 27 | #if CMD_DMA |
| 28 | #include "lld_cdma.h" |
| 29 | #endif |
| 30 | |
| 31 | #define GLOB_LLD_PAGES 64 |
| 32 | #define GLOB_LLD_PAGE_SIZE (512+16) |
| 33 | #define GLOB_LLD_PAGE_DATA_SIZE 512 |
| 34 | #define GLOB_LLD_BLOCKS 2048 |
| 35 | |
| 36 | #if CMD_DMA |
| 37 | #include "lld_cdma.h" |
| 38 | u32 totalUsedBanks; |
| 39 | u32 valid_banks[MAX_CHANS]; |
| 40 | #endif |
| 41 | |
| 42 | static struct mtd_info *spectra_mtd; |
| 43 | static int mtddev = -1; |
| 44 | module_param(mtddev, int, 0); |
| 45 | |
| 46 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 47 | * Function: mtd_Flash_Init |
| 48 | * Inputs: none |
| 49 | * Outputs: PASS=0 (notice 0=ok here) |
| 50 | * Description: Creates & initializes the flash RAM array. |
| 51 | * |
| 52 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 53 | u16 mtd_Flash_Init(void) |
| 54 | { |
| 55 | if (mtddev == -1) { |
| 56 | printk(KERN_ERR "No MTD device specified. Give mtddev parameter\n"); |
| 57 | return FAIL; |
| 58 | } |
| 59 | |
| 60 | spectra_mtd = get_mtd_device(NULL, mtddev); |
| 61 | if (!spectra_mtd) { |
| 62 | printk(KERN_ERR "Failed to obtain MTD device #%d\n", mtddev); |
| 63 | return FAIL; |
| 64 | } |
| 65 | |
| 66 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 67 | __FILE__, __LINE__, __func__); |
| 68 | |
| 69 | return PASS; |
| 70 | } |
| 71 | |
| 72 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 73 | * Function: mtd_Flash_Release |
| 74 | * Inputs: none |
| 75 | * Outputs: PASS=0 (notice 0=ok here) |
| 76 | * Description: Releases the flash. |
| 77 | * |
| 78 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 79 | int mtd_Flash_Release(void) |
| 80 | { |
| 81 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 82 | __FILE__, __LINE__, __func__); |
| 83 | if (!spectra_mtd) |
| 84 | return PASS; |
| 85 | |
| 86 | put_mtd_device(spectra_mtd); |
| 87 | spectra_mtd = NULL; |
| 88 | |
| 89 | return PASS; |
| 90 | } |
| 91 | |
| 92 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 93 | * Function: mtd_Read_Device_ID |
| 94 | * Inputs: none |
| 95 | * Outputs: PASS=1 FAIL=0 |
| 96 | * Description: Reads the info from the controller registers. |
| 97 | * Sets up DeviceInfo structure with device parameters |
| 98 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 99 | |
| 100 | u16 mtd_Read_Device_ID(void) |
| 101 | { |
Sebastian Andrzej Siewior | f39b56f | 2010-06-02 15:08:36 +0200 | [diff] [blame] | 102 | uint64_t tmp; |
David Woodhouse | b589aec | 2009-10-14 23:09:13 +0100 | [diff] [blame] | 103 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 104 | __FILE__, __LINE__, __func__); |
| 105 | |
| 106 | if (!spectra_mtd) |
| 107 | return FAIL; |
| 108 | |
| 109 | DeviceInfo.wDeviceMaker = 0; |
| 110 | DeviceInfo.wDeviceType = 8; |
| 111 | DeviceInfo.wSpectraStartBlock = SPECTRA_START_BLOCK; |
Sebastian Andrzej Siewior | f39b56f | 2010-06-02 15:08:36 +0200 | [diff] [blame] | 112 | tmp = spectra_mtd->size; |
| 113 | do_div(tmp, spectra_mtd->erasesize); |
| 114 | DeviceInfo.wTotalBlocks = tmp; |
David Woodhouse | b589aec | 2009-10-14 23:09:13 +0100 | [diff] [blame] | 115 | DeviceInfo.wSpectraEndBlock = DeviceInfo.wTotalBlocks - 1; |
| 116 | DeviceInfo.wPagesPerBlock = spectra_mtd->erasesize / spectra_mtd->writesize; |
| 117 | DeviceInfo.wPageSize = spectra_mtd->writesize + spectra_mtd->oobsize; |
| 118 | DeviceInfo.wPageDataSize = spectra_mtd->writesize; |
| 119 | DeviceInfo.wPageSpareSize = spectra_mtd->oobsize; |
| 120 | DeviceInfo.wBlockSize = DeviceInfo.wPageSize * DeviceInfo.wPagesPerBlock; |
| 121 | DeviceInfo.wBlockDataSize = DeviceInfo.wPageDataSize * DeviceInfo.wPagesPerBlock; |
| 122 | DeviceInfo.wDataBlockNum = (u32) (DeviceInfo.wSpectraEndBlock - |
| 123 | DeviceInfo.wSpectraStartBlock |
| 124 | + 1); |
| 125 | DeviceInfo.MLCDevice = 0;//spectra_mtd->celltype & NAND_CI_CELLTYPE_MSK; |
| 126 | DeviceInfo.nBitsInPageNumber = |
| 127 | (u8)GLOB_Calc_Used_Bits(DeviceInfo.wPagesPerBlock); |
| 128 | DeviceInfo.nBitsInPageDataSize = |
| 129 | (u8)GLOB_Calc_Used_Bits(DeviceInfo.wPageDataSize); |
| 130 | DeviceInfo.nBitsInBlockDataSize = |
| 131 | (u8)GLOB_Calc_Used_Bits(DeviceInfo.wBlockDataSize); |
| 132 | |
| 133 | #if CMD_DMA |
| 134 | totalUsedBanks = 4; |
| 135 | valid_banks[0] = 1; |
| 136 | valid_banks[1] = 1; |
| 137 | valid_banks[2] = 1; |
| 138 | valid_banks[3] = 1; |
| 139 | #endif |
| 140 | |
| 141 | return PASS; |
| 142 | } |
| 143 | |
| 144 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 145 | * Function: mtd_Flash_Reset |
| 146 | * Inputs: none |
| 147 | * Outputs: PASS=0 (notice 0=ok here) |
| 148 | * Description: Reset the flash |
| 149 | * |
| 150 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 151 | u16 mtd_Flash_Reset(void) |
| 152 | { |
| 153 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 154 | __FILE__, __LINE__, __func__); |
| 155 | |
| 156 | return PASS; |
| 157 | } |
| 158 | |
| 159 | void erase_callback(struct erase_info *e) |
| 160 | { |
| 161 | complete((void *)e->priv); |
| 162 | } |
| 163 | |
| 164 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 165 | * Function: mtd_Erase_Block |
| 166 | * Inputs: Address |
| 167 | * Outputs: PASS=0 (notice 0=ok here) |
| 168 | * Description: Erase a block |
| 169 | * |
| 170 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 171 | u16 mtd_Erase_Block(u32 block_add) |
| 172 | { |
| 173 | struct erase_info erase; |
| 174 | DECLARE_COMPLETION_ONSTACK(comp); |
| 175 | int ret; |
| 176 | |
| 177 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 178 | __FILE__, __LINE__, __func__); |
| 179 | |
| 180 | if (block_add >= DeviceInfo.wTotalBlocks) { |
| 181 | printk(KERN_ERR "mtd_Erase_Block error! " |
| 182 | "Too big block address: %d\n", block_add); |
| 183 | return FAIL; |
| 184 | } |
| 185 | |
| 186 | nand_dbg_print(NAND_DBG_DEBUG, "Erasing block %d\n", |
| 187 | (int)block_add); |
| 188 | |
| 189 | erase.mtd = spectra_mtd; |
| 190 | erase.callback = erase_callback; |
| 191 | erase.addr = block_add * spectra_mtd->erasesize; |
| 192 | erase.len = spectra_mtd->erasesize; |
| 193 | erase.priv = (unsigned long)∁ |
| 194 | |
| 195 | ret = spectra_mtd->erase(spectra_mtd, &erase); |
| 196 | if (!ret) { |
| 197 | wait_for_completion(&comp); |
| 198 | if (erase.state != MTD_ERASE_DONE) |
| 199 | ret = -EIO; |
| 200 | } |
| 201 | if (ret) { |
| 202 | printk(KERN_WARNING "mtd_Erase_Block error! " |
| 203 | "erase of region [0x%llx, 0x%llx] failed\n", |
| 204 | erase.addr, erase.len); |
| 205 | return FAIL; |
| 206 | } |
| 207 | |
| 208 | return PASS; |
| 209 | } |
| 210 | |
| 211 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 212 | * Function: mtd_Write_Page_Main |
| 213 | * Inputs: Write buffer address pointer |
| 214 | * Block number |
| 215 | * Page number |
| 216 | * Number of pages to process |
| 217 | * Outputs: PASS=0 (notice 0=ok here) |
| 218 | * Description: Write the data in the buffer to main area of flash |
| 219 | * |
| 220 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 221 | u16 mtd_Write_Page_Main(u8 *write_data, u32 Block, |
| 222 | u16 Page, u16 PageCount) |
| 223 | { |
| 224 | size_t retlen; |
| 225 | int ret = 0; |
| 226 | |
| 227 | if (Block >= DeviceInfo.wTotalBlocks) |
| 228 | return FAIL; |
| 229 | |
| 230 | if (Page + PageCount > DeviceInfo.wPagesPerBlock) |
| 231 | return FAIL; |
| 232 | |
| 233 | nand_dbg_print(NAND_DBG_DEBUG, "mtd_Write_Page_Main: " |
| 234 | "lba %u Page %u PageCount %u\n", |
| 235 | (unsigned int)Block, |
| 236 | (unsigned int)Page, (unsigned int)PageCount); |
| 237 | |
| 238 | |
| 239 | while (PageCount) { |
| 240 | ret = spectra_mtd->write(spectra_mtd, |
| 241 | (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize), |
| 242 | DeviceInfo.wPageDataSize, &retlen, write_data); |
| 243 | if (ret) { |
| 244 | printk(KERN_ERR "%s failed %d\n", __func__, ret); |
| 245 | return FAIL; |
| 246 | } |
| 247 | write_data += DeviceInfo.wPageDataSize; |
| 248 | Page++; |
| 249 | PageCount--; |
| 250 | } |
| 251 | |
| 252 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 253 | __FILE__, __LINE__, __func__); |
| 254 | |
| 255 | return PASS; |
| 256 | } |
| 257 | |
| 258 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 259 | * Function: mtd_Read_Page_Main |
| 260 | * Inputs: Read buffer address pointer |
| 261 | * Block number |
| 262 | * Page number |
| 263 | * Number of pages to process |
| 264 | * Outputs: PASS=0 (notice 0=ok here) |
| 265 | * Description: Read the data from the flash main area to the buffer |
| 266 | * |
| 267 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 268 | u16 mtd_Read_Page_Main(u8 *read_data, u32 Block, |
| 269 | u16 Page, u16 PageCount) |
| 270 | { |
| 271 | size_t retlen; |
| 272 | int ret = 0; |
| 273 | |
| 274 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 275 | __FILE__, __LINE__, __func__); |
| 276 | |
| 277 | if (Block >= DeviceInfo.wTotalBlocks) |
| 278 | return FAIL; |
| 279 | |
| 280 | if (Page + PageCount > DeviceInfo.wPagesPerBlock) |
| 281 | return FAIL; |
| 282 | |
| 283 | nand_dbg_print(NAND_DBG_DEBUG, "mtd_Read_Page_Main: " |
| 284 | "lba %u Page %u PageCount %u\n", |
| 285 | (unsigned int)Block, |
| 286 | (unsigned int)Page, (unsigned int)PageCount); |
| 287 | |
| 288 | |
| 289 | while (PageCount) { |
| 290 | ret = spectra_mtd->read(spectra_mtd, |
| 291 | (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize), |
| 292 | DeviceInfo.wPageDataSize, &retlen, read_data); |
| 293 | if (ret) { |
| 294 | printk(KERN_ERR "%s failed %d\n", __func__, ret); |
| 295 | return FAIL; |
| 296 | } |
| 297 | read_data += DeviceInfo.wPageDataSize; |
| 298 | Page++; |
| 299 | PageCount--; |
| 300 | } |
| 301 | |
| 302 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 303 | __FILE__, __LINE__, __func__); |
| 304 | |
| 305 | return PASS; |
| 306 | } |
| 307 | |
| 308 | #ifndef ELDORA |
| 309 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 310 | * Function: mtd_Read_Page_Main_Spare |
| 311 | * Inputs: Write Buffer |
| 312 | * Address |
| 313 | * Buffer size |
| 314 | * Outputs: PASS=0 (notice 0=ok here) |
| 315 | * Description: Read from flash main+spare area |
| 316 | * |
| 317 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 318 | u16 mtd_Read_Page_Main_Spare(u8 *read_data, u32 Block, |
| 319 | u16 Page, u16 PageCount) |
| 320 | { |
| 321 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 322 | __FILE__, __LINE__, __func__); |
| 323 | |
| 324 | if (Block >= DeviceInfo.wTotalBlocks) { |
| 325 | printk(KERN_ERR "Read Page Main+Spare " |
| 326 | "Error: Block Address too big\n"); |
| 327 | return FAIL; |
| 328 | } |
| 329 | |
| 330 | if (Page + PageCount > DeviceInfo.wPagesPerBlock) { |
| 331 | printk(KERN_ERR "Read Page Main+Spare " |
| 332 | "Error: Page number %d+%d too big in block %d\n", |
| 333 | Page, PageCount, Block); |
| 334 | return FAIL; |
| 335 | } |
| 336 | |
| 337 | nand_dbg_print(NAND_DBG_DEBUG, "Read Page Main + Spare - " |
| 338 | "No. of pages %u block %u start page %u\n", |
| 339 | (unsigned int)PageCount, |
| 340 | (unsigned int)Block, (unsigned int)Page); |
| 341 | |
| 342 | |
| 343 | while (PageCount) { |
| 344 | struct mtd_oob_ops ops; |
| 345 | int ret; |
| 346 | |
| 347 | ops.mode = MTD_OOB_AUTO; |
| 348 | ops.datbuf = read_data; |
| 349 | ops.len = DeviceInfo.wPageDataSize; |
| 350 | ops.oobbuf = read_data + DeviceInfo.wPageDataSize + BTSIG_OFFSET; |
| 351 | ops.ooblen = BTSIG_BYTES; |
| 352 | ops.ooboffs = 0; |
| 353 | |
| 354 | ret = spectra_mtd->read_oob(spectra_mtd, |
| 355 | (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize), |
| 356 | &ops); |
| 357 | if (ret) { |
| 358 | printk(KERN_ERR "%s failed %d\n", __func__, ret); |
| 359 | return FAIL; |
| 360 | } |
| 361 | read_data += DeviceInfo.wPageSize; |
| 362 | Page++; |
| 363 | PageCount--; |
| 364 | } |
| 365 | |
| 366 | return PASS; |
| 367 | } |
| 368 | |
| 369 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 370 | * Function: mtd_Write_Page_Main_Spare |
| 371 | * Inputs: Write buffer |
| 372 | * address |
| 373 | * buffer length |
| 374 | * Outputs: PASS=0 (notice 0=ok here) |
| 375 | * Description: Write the buffer to main+spare area of flash |
| 376 | * |
| 377 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 378 | u16 mtd_Write_Page_Main_Spare(u8 *write_data, u32 Block, |
| 379 | u16 Page, u16 page_count) |
| 380 | { |
| 381 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 382 | __FILE__, __LINE__, __func__); |
| 383 | |
| 384 | if (Block >= DeviceInfo.wTotalBlocks) { |
| 385 | printk(KERN_ERR "Write Page Main + Spare " |
| 386 | "Error: Block Address too big\n"); |
| 387 | return FAIL; |
| 388 | } |
| 389 | |
| 390 | if (Page + page_count > DeviceInfo.wPagesPerBlock) { |
| 391 | printk(KERN_ERR "Write Page Main + Spare " |
| 392 | "Error: Page number %d+%d too big in block %d\n", |
| 393 | Page, page_count, Block); |
| 394 | WARN_ON(1); |
| 395 | return FAIL; |
| 396 | } |
| 397 | |
| 398 | nand_dbg_print(NAND_DBG_DEBUG, "Write Page Main+Spare - " |
| 399 | "No. of pages %u block %u start page %u\n", |
| 400 | (unsigned int)page_count, |
| 401 | (unsigned int)Block, (unsigned int)Page); |
| 402 | |
| 403 | while (page_count) { |
| 404 | struct mtd_oob_ops ops; |
| 405 | int ret; |
| 406 | |
| 407 | ops.mode = MTD_OOB_AUTO; |
| 408 | ops.datbuf = write_data; |
| 409 | ops.len = DeviceInfo.wPageDataSize; |
| 410 | ops.oobbuf = write_data + DeviceInfo.wPageDataSize + BTSIG_OFFSET; |
| 411 | ops.ooblen = BTSIG_BYTES; |
| 412 | ops.ooboffs = 0; |
| 413 | |
| 414 | ret = spectra_mtd->write_oob(spectra_mtd, |
| 415 | (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize), |
| 416 | &ops); |
| 417 | if (ret) { |
| 418 | printk(KERN_ERR "%s failed %d\n", __func__, ret); |
| 419 | return FAIL; |
| 420 | } |
| 421 | write_data += DeviceInfo.wPageSize; |
| 422 | Page++; |
| 423 | page_count--; |
| 424 | } |
| 425 | |
| 426 | return PASS; |
| 427 | } |
| 428 | |
| 429 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 430 | * Function: mtd_Write_Page_Spare |
| 431 | * Inputs: Write buffer |
| 432 | * Address |
| 433 | * buffer size |
| 434 | * Outputs: PASS=0 (notice 0=ok here) |
| 435 | * Description: Write the buffer in the spare area |
| 436 | * |
| 437 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 438 | u16 mtd_Write_Page_Spare(u8 *write_data, u32 Block, |
| 439 | u16 Page, u16 PageCount) |
| 440 | { |
| 441 | WARN_ON(1); |
| 442 | return FAIL; |
| 443 | } |
| 444 | |
| 445 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 446 | * Function: mtd_Read_Page_Spare |
| 447 | * Inputs: Write Buffer |
| 448 | * Address |
| 449 | * Buffer size |
| 450 | * Outputs: PASS=0 (notice 0=ok here) |
| 451 | * Description: Read data from the spare area |
| 452 | * |
| 453 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 454 | u16 mtd_Read_Page_Spare(u8 *read_data, u32 Block, |
| 455 | u16 Page, u16 PageCount) |
| 456 | { |
| 457 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 458 | __FILE__, __LINE__, __func__); |
| 459 | |
| 460 | if (Block >= DeviceInfo.wTotalBlocks) { |
| 461 | printk(KERN_ERR "Read Page Spare " |
| 462 | "Error: Block Address too big\n"); |
| 463 | return FAIL; |
| 464 | } |
| 465 | |
| 466 | if (Page + PageCount > DeviceInfo.wPagesPerBlock) { |
| 467 | printk(KERN_ERR "Read Page Spare " |
| 468 | "Error: Page number too big\n"); |
| 469 | return FAIL; |
| 470 | } |
| 471 | |
| 472 | nand_dbg_print(NAND_DBG_DEBUG, "Read Page Spare- " |
| 473 | "block %u page %u (%u pages)\n", |
| 474 | (unsigned int)Block, (unsigned int)Page, PageCount); |
| 475 | |
| 476 | while (PageCount) { |
| 477 | struct mtd_oob_ops ops; |
| 478 | int ret; |
| 479 | |
| 480 | ops.mode = MTD_OOB_AUTO; |
| 481 | ops.datbuf = NULL; |
| 482 | ops.len = 0; |
| 483 | ops.oobbuf = read_data; |
| 484 | ops.ooblen = BTSIG_BYTES; |
| 485 | ops.ooboffs = 0; |
| 486 | |
| 487 | ret = spectra_mtd->read_oob(spectra_mtd, |
| 488 | (Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize), |
| 489 | &ops); |
| 490 | if (ret) { |
| 491 | printk(KERN_ERR "%s failed %d\n", __func__, ret); |
| 492 | return FAIL; |
| 493 | } |
| 494 | |
| 495 | read_data += DeviceInfo.wPageSize; |
| 496 | Page++; |
| 497 | PageCount--; |
| 498 | } |
| 499 | |
| 500 | return PASS; |
| 501 | } |
| 502 | |
| 503 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 504 | * Function: mtd_Enable_Disable_Interrupts |
| 505 | * Inputs: enable or disable |
| 506 | * Outputs: none |
| 507 | * Description: NOP |
| 508 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 509 | void mtd_Enable_Disable_Interrupts(u16 INT_ENABLE) |
| 510 | { |
| 511 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 512 | __FILE__, __LINE__, __func__); |
| 513 | } |
| 514 | |
| 515 | u16 mtd_Get_Bad_Block(u32 block) |
| 516 | { |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | #if CMD_DMA |
| 521 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 522 | * Support for CDMA functions |
| 523 | ************************************ |
| 524 | * mtd_CDMA_Flash_Init |
| 525 | * CDMA_process_data command (use LLD_CDMA) |
| 526 | * CDMA_MemCopy_CMD (use LLD_CDMA) |
| 527 | * mtd_CDMA_execute all commands |
| 528 | * mtd_CDMA_Event_Status |
| 529 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 530 | u16 mtd_CDMA_Flash_Init(void) |
| 531 | { |
| 532 | u16 i; |
| 533 | |
| 534 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 535 | __FILE__, __LINE__, __func__); |
| 536 | |
| 537 | for (i = 0; i < MAX_DESCS + MAX_CHANS; i++) { |
| 538 | PendingCMD[i].CMD = 0; |
| 539 | PendingCMD[i].Tag = 0; |
| 540 | PendingCMD[i].DataAddr = 0; |
| 541 | PendingCMD[i].Block = 0; |
| 542 | PendingCMD[i].Page = 0; |
| 543 | PendingCMD[i].PageCount = 0; |
| 544 | PendingCMD[i].DataDestAddr = 0; |
| 545 | PendingCMD[i].DataSrcAddr = 0; |
| 546 | PendingCMD[i].MemCopyByteCnt = 0; |
| 547 | PendingCMD[i].ChanSync[0] = 0; |
| 548 | PendingCMD[i].ChanSync[1] = 0; |
| 549 | PendingCMD[i].ChanSync[2] = 0; |
| 550 | PendingCMD[i].ChanSync[3] = 0; |
| 551 | PendingCMD[i].ChanSync[4] = 0; |
| 552 | PendingCMD[i].Status = 3; |
| 553 | } |
| 554 | |
| 555 | return PASS; |
| 556 | } |
| 557 | |
| 558 | static void mtd_isr(int irq, void *dev_id) |
| 559 | { |
| 560 | /* TODO: ... */ |
| 561 | } |
| 562 | |
| 563 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 564 | * Function: CDMA_Execute_CMDs |
| 565 | * Inputs: tag_count: the number of pending cmds to do |
| 566 | * Outputs: PASS/FAIL |
| 567 | * Description: execute each command in the pending CMD array |
| 568 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 569 | u16 mtd_CDMA_Execute_CMDs(u16 tag_count) |
| 570 | { |
| 571 | u16 i, j; |
| 572 | u8 CMD; /* cmd parameter */ |
| 573 | u8 *data; |
| 574 | u32 block; |
| 575 | u16 page; |
| 576 | u16 count; |
| 577 | u16 status = PASS; |
| 578 | |
| 579 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 580 | __FILE__, __LINE__, __func__); |
| 581 | |
| 582 | nand_dbg_print(NAND_DBG_TRACE, "At start of Execute CMDs: " |
| 583 | "Tag Count %u\n", tag_count); |
| 584 | |
| 585 | for (i = 0; i < totalUsedBanks; i++) { |
| 586 | PendingCMD[i].CMD = DUMMY_CMD; |
| 587 | PendingCMD[i].Tag = 0xFF; |
| 588 | PendingCMD[i].Block = |
| 589 | (DeviceInfo.wTotalBlocks / totalUsedBanks) * i; |
| 590 | |
| 591 | for (j = 0; j <= MAX_CHANS; j++) |
| 592 | PendingCMD[i].ChanSync[j] = 0; |
| 593 | } |
| 594 | |
| 595 | CDMA_Execute_CMDs(tag_count); |
| 596 | |
| 597 | #ifdef VERBOSE |
| 598 | print_pending_cmds(tag_count); |
| 599 | #endif |
| 600 | #if DEBUG_SYNC |
| 601 | } |
| 602 | debug_sync_cnt++; |
| 603 | #endif |
| 604 | |
| 605 | for (i = MAX_CHANS; |
| 606 | i < tag_count + MAX_CHANS; i++) { |
| 607 | CMD = PendingCMD[i].CMD; |
| 608 | data = PendingCMD[i].DataAddr; |
| 609 | block = PendingCMD[i].Block; |
| 610 | page = PendingCMD[i].Page; |
| 611 | count = PendingCMD[i].PageCount; |
| 612 | |
| 613 | switch (CMD) { |
| 614 | case ERASE_CMD: |
| 615 | mtd_Erase_Block(block); |
| 616 | PendingCMD[i].Status = PASS; |
| 617 | break; |
| 618 | case WRITE_MAIN_CMD: |
| 619 | mtd_Write_Page_Main(data, block, page, count); |
| 620 | PendingCMD[i].Status = PASS; |
| 621 | break; |
| 622 | case WRITE_MAIN_SPARE_CMD: |
| 623 | mtd_Write_Page_Main_Spare(data, block, page, count); |
| 624 | PendingCMD[i].Status = PASS; |
| 625 | break; |
| 626 | case READ_MAIN_CMD: |
| 627 | mtd_Read_Page_Main(data, block, page, count); |
| 628 | PendingCMD[i].Status = PASS; |
| 629 | break; |
| 630 | case MEMCOPY_CMD: |
| 631 | memcpy(PendingCMD[i].DataDestAddr, |
| 632 | PendingCMD[i].DataSrcAddr, |
| 633 | PendingCMD[i].MemCopyByteCnt); |
| 634 | case DUMMY_CMD: |
| 635 | PendingCMD[i].Status = PASS; |
| 636 | break; |
| 637 | default: |
| 638 | PendingCMD[i].Status = FAIL; |
| 639 | break; |
| 640 | } |
| 641 | } |
| 642 | |
| 643 | /* |
| 644 | * Temperory adding code to reset PendingCMD array for basic testing. |
| 645 | * It should be done at the end of event status function. |
| 646 | */ |
| 647 | for (i = tag_count + MAX_CHANS; i < MAX_DESCS; i++) { |
| 648 | PendingCMD[i].CMD = 0; |
| 649 | PendingCMD[i].Tag = 0; |
| 650 | PendingCMD[i].DataAddr = 0; |
| 651 | PendingCMD[i].Block = 0; |
| 652 | PendingCMD[i].Page = 0; |
| 653 | PendingCMD[i].PageCount = 0; |
| 654 | PendingCMD[i].DataDestAddr = 0; |
| 655 | PendingCMD[i].DataSrcAddr = 0; |
| 656 | PendingCMD[i].MemCopyByteCnt = 0; |
| 657 | PendingCMD[i].ChanSync[0] = 0; |
| 658 | PendingCMD[i].ChanSync[1] = 0; |
| 659 | PendingCMD[i].ChanSync[2] = 0; |
| 660 | PendingCMD[i].ChanSync[3] = 0; |
| 661 | PendingCMD[i].ChanSync[4] = 0; |
| 662 | PendingCMD[i].Status = CMD_NOT_DONE; |
| 663 | } |
| 664 | |
| 665 | nand_dbg_print(NAND_DBG_TRACE, "At end of Execute CMDs.\n"); |
| 666 | |
| 667 | mtd_isr(0, 0); /* This is a null isr now. Need fill it in future */ |
| 668 | |
| 669 | return status; |
| 670 | } |
| 671 | |
| 672 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& |
| 673 | * Function: mtd_Event_Status |
| 674 | * Inputs: none |
| 675 | * Outputs: Event_Status code |
| 676 | * Description: This function can also be used to force errors |
| 677 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ |
| 678 | u16 mtd_CDMA_Event_Status(void) |
| 679 | { |
| 680 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", |
| 681 | __FILE__, __LINE__, __func__); |
| 682 | |
| 683 | return EVENT_PASS; |
| 684 | } |
| 685 | |
| 686 | #endif /* CMD_DMA */ |
| 687 | #endif /* !ELDORA */ |