Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* Driver for SanDisk SDDR-09 SmartMedia reader |
| 2 | * |
| 3 | * $Id: sddr09.c,v 1.24 2002/04/22 03:39:43 mdharm Exp $ |
| 4 | * (c) 2000, 2001 Robert Baruch (autophile@starband.net) |
| 5 | * (c) 2002 Andries Brouwer (aeb@cwi.nl) |
| 6 | * Developed with the assistance of: |
| 7 | * (c) 2002 Alan Stern <stern@rowland.org> |
| 8 | * |
| 9 | * The SanDisk SDDR-09 SmartMedia reader uses the Shuttle EUSB-01 chip. |
| 10 | * This chip is a programmable USB controller. In the SDDR-09, it has |
| 11 | * been programmed to obey a certain limited set of SCSI commands. |
| 12 | * This driver translates the "real" SCSI commands to the SDDR-09 SCSI |
| 13 | * commands. |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or modify it |
| 16 | * under the terms of the GNU General Public License as published by the |
| 17 | * Free Software Foundation; either version 2, or (at your option) any |
| 18 | * later version. |
| 19 | * |
| 20 | * This program is distributed in the hope that it will be useful, but |
| 21 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 23 | * General Public License for more details. |
| 24 | * |
| 25 | * You should have received a copy of the GNU General Public License along |
| 26 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 27 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 28 | */ |
| 29 | |
| 30 | /* |
| 31 | * Known vendor commands: 12 bytes, first byte is opcode |
| 32 | * |
| 33 | * E7: read scatter gather |
| 34 | * E8: read |
| 35 | * E9: write |
| 36 | * EA: erase |
| 37 | * EB: reset |
| 38 | * EC: read status |
| 39 | * ED: read ID |
| 40 | * EE: write CIS (?) |
| 41 | * EF: compute checksum (?) |
| 42 | */ |
| 43 | |
| 44 | #include <linux/sched.h> |
| 45 | #include <linux/errno.h> |
| 46 | #include <linux/slab.h> |
| 47 | |
| 48 | #include <scsi/scsi.h> |
| 49 | #include <scsi/scsi_cmnd.h> |
| 50 | |
| 51 | #include "usb.h" |
| 52 | #include "transport.h" |
| 53 | #include "protocol.h" |
| 54 | #include "debug.h" |
| 55 | #include "sddr09.h" |
| 56 | |
| 57 | |
| 58 | #define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) ) |
| 59 | #define LSB_of(s) ((s)&0xFF) |
| 60 | #define MSB_of(s) ((s)>>8) |
| 61 | |
| 62 | /* #define US_DEBUGP printk */ |
| 63 | |
| 64 | /* |
| 65 | * First some stuff that does not belong here: |
| 66 | * data on SmartMedia and other cards, completely |
| 67 | * unrelated to this driver. |
| 68 | * Similar stuff occurs in <linux/mtd/nand_ids.h>. |
| 69 | */ |
| 70 | |
| 71 | struct nand_flash_dev { |
| 72 | int model_id; |
| 73 | int chipshift; /* 1<<cs bytes total capacity */ |
| 74 | char pageshift; /* 1<<ps bytes in a page */ |
| 75 | char blockshift; /* 1<<bs pages in an erase block */ |
| 76 | char zoneshift; /* 1<<zs blocks in a zone */ |
| 77 | /* # of logical blocks is 125/128 of this */ |
| 78 | char pageadrlen; /* length of an address in bytes - 1 */ |
| 79 | }; |
| 80 | |
| 81 | /* |
| 82 | * NAND Flash Manufacturer ID Codes |
| 83 | */ |
| 84 | #define NAND_MFR_AMD 0x01 |
| 85 | #define NAND_MFR_NATSEMI 0x8f |
| 86 | #define NAND_MFR_TOSHIBA 0x98 |
| 87 | #define NAND_MFR_SAMSUNG 0xec |
| 88 | |
| 89 | static inline char *nand_flash_manufacturer(int manuf_id) { |
| 90 | switch(manuf_id) { |
| 91 | case NAND_MFR_AMD: |
| 92 | return "AMD"; |
| 93 | case NAND_MFR_NATSEMI: |
| 94 | return "NATSEMI"; |
| 95 | case NAND_MFR_TOSHIBA: |
| 96 | return "Toshiba"; |
| 97 | case NAND_MFR_SAMSUNG: |
| 98 | return "Samsung"; |
| 99 | default: |
| 100 | return "unknown"; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * It looks like it is unnecessary to attach manufacturer to the |
| 106 | * remaining data: SSFDC prescribes manufacturer-independent id codes. |
| 107 | * |
| 108 | * 256 MB NAND flash has a 5-byte ID with 2nd byte 0xaa, 0xba, 0xca or 0xda. |
| 109 | */ |
| 110 | |
| 111 | static struct nand_flash_dev nand_flash_ids[] = { |
| 112 | /* NAND flash */ |
| 113 | { 0x6e, 20, 8, 4, 8, 2}, /* 1 MB */ |
| 114 | { 0xe8, 20, 8, 4, 8, 2}, /* 1 MB */ |
| 115 | { 0xec, 20, 8, 4, 8, 2}, /* 1 MB */ |
| 116 | { 0x64, 21, 8, 4, 9, 2}, /* 2 MB */ |
| 117 | { 0xea, 21, 8, 4, 9, 2}, /* 2 MB */ |
| 118 | { 0x6b, 22, 9, 4, 9, 2}, /* 4 MB */ |
| 119 | { 0xe3, 22, 9, 4, 9, 2}, /* 4 MB */ |
| 120 | { 0xe5, 22, 9, 4, 9, 2}, /* 4 MB */ |
| 121 | { 0xe6, 23, 9, 4, 10, 2}, /* 8 MB */ |
| 122 | { 0x73, 24, 9, 5, 10, 2}, /* 16 MB */ |
| 123 | { 0x75, 25, 9, 5, 10, 2}, /* 32 MB */ |
| 124 | { 0x76, 26, 9, 5, 10, 3}, /* 64 MB */ |
| 125 | { 0x79, 27, 9, 5, 10, 3}, /* 128 MB */ |
| 126 | |
| 127 | /* MASK ROM */ |
| 128 | { 0x5d, 21, 9, 4, 8, 2}, /* 2 MB */ |
| 129 | { 0xd5, 22, 9, 4, 9, 2}, /* 4 MB */ |
| 130 | { 0xd6, 23, 9, 4, 10, 2}, /* 8 MB */ |
| 131 | { 0x57, 24, 9, 4, 11, 2}, /* 16 MB */ |
| 132 | { 0x58, 25, 9, 4, 12, 2}, /* 32 MB */ |
| 133 | { 0,} |
| 134 | }; |
| 135 | |
| 136 | #define SIZE(a) (sizeof(a)/sizeof((a)[0])) |
| 137 | |
| 138 | static struct nand_flash_dev * |
| 139 | nand_find_id(unsigned char id) { |
| 140 | int i; |
| 141 | |
| 142 | for (i = 0; i < SIZE(nand_flash_ids); i++) |
| 143 | if (nand_flash_ids[i].model_id == id) |
| 144 | return &(nand_flash_ids[i]); |
| 145 | return NULL; |
| 146 | } |
| 147 | |
| 148 | /* |
| 149 | * ECC computation. |
| 150 | */ |
| 151 | static unsigned char parity[256]; |
| 152 | static unsigned char ecc2[256]; |
| 153 | |
| 154 | static void nand_init_ecc(void) { |
| 155 | int i, j, a; |
| 156 | |
| 157 | parity[0] = 0; |
| 158 | for (i = 1; i < 256; i++) |
| 159 | parity[i] = (parity[i&(i-1)] ^ 1); |
| 160 | |
| 161 | for (i = 0; i < 256; i++) { |
| 162 | a = 0; |
| 163 | for (j = 0; j < 8; j++) { |
| 164 | if (i & (1<<j)) { |
| 165 | if ((j & 1) == 0) |
| 166 | a ^= 0x04; |
| 167 | if ((j & 2) == 0) |
| 168 | a ^= 0x10; |
| 169 | if ((j & 4) == 0) |
| 170 | a ^= 0x40; |
| 171 | } |
| 172 | } |
| 173 | ecc2[i] = ~(a ^ (a<<1) ^ (parity[i] ? 0xa8 : 0)); |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | /* compute 3-byte ecc on 256 bytes */ |
| 178 | static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) { |
| 179 | int i, j, a; |
| 180 | unsigned char par, bit, bits[8]; |
| 181 | |
| 182 | par = 0; |
| 183 | for (j = 0; j < 8; j++) |
| 184 | bits[j] = 0; |
| 185 | |
| 186 | /* collect 16 checksum bits */ |
| 187 | for (i = 0; i < 256; i++) { |
| 188 | par ^= data[i]; |
| 189 | bit = parity[data[i]]; |
| 190 | for (j = 0; j < 8; j++) |
| 191 | if ((i & (1<<j)) == 0) |
| 192 | bits[j] ^= bit; |
| 193 | } |
| 194 | |
| 195 | /* put 4+4+4 = 12 bits in the ecc */ |
| 196 | a = (bits[3] << 6) + (bits[2] << 4) + (bits[1] << 2) + bits[0]; |
| 197 | ecc[0] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); |
| 198 | |
| 199 | a = (bits[7] << 6) + (bits[6] << 4) + (bits[5] << 2) + bits[4]; |
| 200 | ecc[1] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); |
| 201 | |
| 202 | ecc[2] = ecc2[par]; |
| 203 | } |
| 204 | |
| 205 | static int nand_compare_ecc(unsigned char *data, unsigned char *ecc) { |
| 206 | return (data[0] == ecc[0] && data[1] == ecc[1] && data[2] == ecc[2]); |
| 207 | } |
| 208 | |
| 209 | static void nand_store_ecc(unsigned char *data, unsigned char *ecc) { |
| 210 | memcpy(data, ecc, 3); |
| 211 | } |
| 212 | |
| 213 | /* |
| 214 | * The actual driver starts here. |
| 215 | */ |
| 216 | |
| 217 | /* |
| 218 | * On my 16MB card, control blocks have size 64 (16 real control bytes, |
| 219 | * and 48 junk bytes). In reality of course the card uses 16 control bytes, |
| 220 | * so the reader makes up the remaining 48. Don't know whether these numbers |
| 221 | * depend on the card. For now a constant. |
| 222 | */ |
| 223 | #define CONTROL_SHIFT 6 |
| 224 | |
| 225 | /* |
| 226 | * On my Combo CF/SM reader, the SM reader has LUN 1. |
| 227 | * (and things fail with LUN 0). |
| 228 | * It seems LUN is irrelevant for others. |
| 229 | */ |
| 230 | #define LUN 1 |
| 231 | #define LUNBITS (LUN << 5) |
| 232 | |
| 233 | /* |
| 234 | * LBA and PBA are unsigned ints. Special values. |
| 235 | */ |
| 236 | #define UNDEF 0xffffffff |
| 237 | #define SPARE 0xfffffffe |
| 238 | #define UNUSABLE 0xfffffffd |
| 239 | |
| 240 | static int erase_bad_lba_entries = 0; |
| 241 | |
| 242 | /* send vendor interface command (0x41) */ |
| 243 | /* called for requests 0, 1, 8 */ |
| 244 | static int |
| 245 | sddr09_send_command(struct us_data *us, |
| 246 | unsigned char request, |
| 247 | unsigned char direction, |
| 248 | unsigned char *xfer_data, |
| 249 | unsigned int xfer_len) { |
| 250 | unsigned int pipe; |
| 251 | unsigned char requesttype = (0x41 | direction); |
| 252 | int rc; |
| 253 | |
| 254 | // Get the receive or send control pipe number |
| 255 | |
| 256 | if (direction == USB_DIR_IN) |
| 257 | pipe = us->recv_ctrl_pipe; |
| 258 | else |
| 259 | pipe = us->send_ctrl_pipe; |
| 260 | |
| 261 | rc = usb_stor_ctrl_transfer(us, pipe, request, requesttype, |
| 262 | 0, 0, xfer_data, xfer_len); |
| 263 | return (rc == USB_STOR_XFER_GOOD ? USB_STOR_TRANSPORT_GOOD : |
| 264 | USB_STOR_TRANSPORT_ERROR); |
| 265 | } |
| 266 | |
| 267 | static int |
| 268 | sddr09_send_scsi_command(struct us_data *us, |
| 269 | unsigned char *command, |
| 270 | unsigned int command_len) { |
| 271 | return sddr09_send_command(us, 0, USB_DIR_OUT, command, command_len); |
| 272 | } |
| 273 | |
| 274 | #if 0 |
| 275 | /* |
| 276 | * Test Unit Ready Command: 12 bytes. |
| 277 | * byte 0: opcode: 00 |
| 278 | */ |
| 279 | static int |
| 280 | sddr09_test_unit_ready(struct us_data *us) { |
| 281 | unsigned char *command = us->iobuf; |
| 282 | int result; |
| 283 | |
| 284 | memset(command, 0, 6); |
| 285 | command[1] = LUNBITS; |
| 286 | |
| 287 | result = sddr09_send_scsi_command(us, command, 6); |
| 288 | |
| 289 | US_DEBUGP("sddr09_test_unit_ready returns %d\n", result); |
| 290 | |
| 291 | return result; |
| 292 | } |
| 293 | #endif |
| 294 | |
| 295 | /* |
| 296 | * Request Sense Command: 12 bytes. |
| 297 | * byte 0: opcode: 03 |
| 298 | * byte 4: data length |
| 299 | */ |
| 300 | static int |
| 301 | sddr09_request_sense(struct us_data *us, unsigned char *sensebuf, int buflen) { |
| 302 | unsigned char *command = us->iobuf; |
| 303 | int result; |
| 304 | |
| 305 | memset(command, 0, 12); |
| 306 | command[0] = 0x03; |
| 307 | command[1] = LUNBITS; |
| 308 | command[4] = buflen; |
| 309 | |
| 310 | result = sddr09_send_scsi_command(us, command, 12); |
| 311 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 312 | US_DEBUGP("request sense failed\n"); |
| 313 | return result; |
| 314 | } |
| 315 | |
| 316 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, |
| 317 | sensebuf, buflen, NULL); |
| 318 | if (result != USB_STOR_XFER_GOOD) { |
| 319 | US_DEBUGP("request sense bulk in failed\n"); |
| 320 | return USB_STOR_TRANSPORT_ERROR; |
| 321 | } else { |
| 322 | US_DEBUGP("request sense worked\n"); |
| 323 | return USB_STOR_TRANSPORT_GOOD; |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | /* |
| 328 | * Read Command: 12 bytes. |
| 329 | * byte 0: opcode: E8 |
| 330 | * byte 1: last two bits: 00: read data, 01: read blockwise control, |
| 331 | * 10: read both, 11: read pagewise control. |
| 332 | * It turns out we need values 20, 21, 22, 23 here (LUN 1). |
| 333 | * bytes 2-5: address (interpretation depends on byte 1, see below) |
| 334 | * bytes 10-11: count (idem) |
| 335 | * |
| 336 | * A page has 512 data bytes and 64 control bytes (16 control and 48 junk). |
| 337 | * A read data command gets data in 512-byte pages. |
| 338 | * A read control command gets control in 64-byte chunks. |
| 339 | * A read both command gets data+control in 576-byte chunks. |
| 340 | * |
| 341 | * Blocks are groups of 32 pages, and read blockwise control jumps to the |
| 342 | * next block, while read pagewise control jumps to the next page after |
| 343 | * reading a group of 64 control bytes. |
| 344 | * [Here 512 = 1<<pageshift, 32 = 1<<blockshift, 64 is constant?] |
| 345 | * |
| 346 | * (1 MB and 2 MB cards are a bit different, but I have only a 16 MB card.) |
| 347 | */ |
| 348 | |
| 349 | static int |
| 350 | sddr09_readX(struct us_data *us, int x, unsigned long fromaddress, |
| 351 | int nr_of_pages, int bulklen, unsigned char *buf, |
| 352 | int use_sg) { |
| 353 | |
| 354 | unsigned char *command = us->iobuf; |
| 355 | int result; |
| 356 | |
| 357 | command[0] = 0xE8; |
| 358 | command[1] = LUNBITS | x; |
| 359 | command[2] = MSB_of(fromaddress>>16); |
| 360 | command[3] = LSB_of(fromaddress>>16); |
| 361 | command[4] = MSB_of(fromaddress & 0xFFFF); |
| 362 | command[5] = LSB_of(fromaddress & 0xFFFF); |
| 363 | command[6] = 0; |
| 364 | command[7] = 0; |
| 365 | command[8] = 0; |
| 366 | command[9] = 0; |
| 367 | command[10] = MSB_of(nr_of_pages); |
| 368 | command[11] = LSB_of(nr_of_pages); |
| 369 | |
| 370 | result = sddr09_send_scsi_command(us, command, 12); |
| 371 | |
| 372 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 373 | US_DEBUGP("Result for send_control in sddr09_read2%d %d\n", |
| 374 | x, result); |
| 375 | return result; |
| 376 | } |
| 377 | |
| 378 | result = usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, |
| 379 | buf, bulklen, use_sg, NULL); |
| 380 | |
| 381 | if (result != USB_STOR_XFER_GOOD) { |
| 382 | US_DEBUGP("Result for bulk_transfer in sddr09_read2%d %d\n", |
| 383 | x, result); |
| 384 | return USB_STOR_TRANSPORT_ERROR; |
| 385 | } |
| 386 | return USB_STOR_TRANSPORT_GOOD; |
| 387 | } |
| 388 | |
| 389 | /* |
| 390 | * Read Data |
| 391 | * |
| 392 | * fromaddress counts data shorts: |
| 393 | * increasing it by 256 shifts the bytestream by 512 bytes; |
| 394 | * the last 8 bits are ignored. |
| 395 | * |
| 396 | * nr_of_pages counts pages of size (1 << pageshift). |
| 397 | */ |
| 398 | static int |
| 399 | sddr09_read20(struct us_data *us, unsigned long fromaddress, |
| 400 | int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) { |
| 401 | int bulklen = nr_of_pages << pageshift; |
| 402 | |
| 403 | /* The last 8 bits of fromaddress are ignored. */ |
| 404 | return sddr09_readX(us, 0, fromaddress, nr_of_pages, bulklen, |
| 405 | buf, use_sg); |
| 406 | } |
| 407 | |
| 408 | /* |
| 409 | * Read Blockwise Control |
| 410 | * |
| 411 | * fromaddress gives the starting position (as in read data; |
| 412 | * the last 8 bits are ignored); increasing it by 32*256 shifts |
| 413 | * the output stream by 64 bytes. |
| 414 | * |
| 415 | * count counts control groups of size (1 << controlshift). |
| 416 | * For me, controlshift = 6. Is this constant? |
| 417 | * |
| 418 | * After getting one control group, jump to the next block |
| 419 | * (fromaddress += 8192). |
| 420 | */ |
| 421 | static int |
| 422 | sddr09_read21(struct us_data *us, unsigned long fromaddress, |
| 423 | int count, int controlshift, unsigned char *buf, int use_sg) { |
| 424 | |
| 425 | int bulklen = (count << controlshift); |
| 426 | return sddr09_readX(us, 1, fromaddress, count, bulklen, |
| 427 | buf, use_sg); |
| 428 | } |
| 429 | |
| 430 | /* |
| 431 | * Read both Data and Control |
| 432 | * |
| 433 | * fromaddress counts data shorts, ignoring control: |
| 434 | * increasing it by 256 shifts the bytestream by 576 = 512+64 bytes; |
| 435 | * the last 8 bits are ignored. |
| 436 | * |
| 437 | * nr_of_pages counts pages of size (1 << pageshift) + (1 << controlshift). |
| 438 | */ |
| 439 | static int |
| 440 | sddr09_read22(struct us_data *us, unsigned long fromaddress, |
| 441 | int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) { |
| 442 | |
| 443 | int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT); |
| 444 | US_DEBUGP("sddr09_read22: reading %d pages, %d bytes\n", |
| 445 | nr_of_pages, bulklen); |
| 446 | return sddr09_readX(us, 2, fromaddress, nr_of_pages, bulklen, |
| 447 | buf, use_sg); |
| 448 | } |
| 449 | |
| 450 | #if 0 |
| 451 | /* |
| 452 | * Read Pagewise Control |
| 453 | * |
| 454 | * fromaddress gives the starting position (as in read data; |
| 455 | * the last 8 bits are ignored); increasing it by 256 shifts |
| 456 | * the output stream by 64 bytes. |
| 457 | * |
| 458 | * count counts control groups of size (1 << controlshift). |
| 459 | * For me, controlshift = 6. Is this constant? |
| 460 | * |
| 461 | * After getting one control group, jump to the next page |
| 462 | * (fromaddress += 256). |
| 463 | */ |
| 464 | static int |
| 465 | sddr09_read23(struct us_data *us, unsigned long fromaddress, |
| 466 | int count, int controlshift, unsigned char *buf, int use_sg) { |
| 467 | |
| 468 | int bulklen = (count << controlshift); |
| 469 | return sddr09_readX(us, 3, fromaddress, count, bulklen, |
| 470 | buf, use_sg); |
| 471 | } |
| 472 | #endif |
| 473 | |
| 474 | /* |
| 475 | * Erase Command: 12 bytes. |
| 476 | * byte 0: opcode: EA |
| 477 | * bytes 6-9: erase address (big-endian, counting shorts, sector aligned). |
| 478 | * |
| 479 | * Always precisely one block is erased; bytes 2-5 and 10-11 are ignored. |
| 480 | * The byte address being erased is 2*Eaddress. |
| 481 | * The CIS cannot be erased. |
| 482 | */ |
| 483 | static int |
| 484 | sddr09_erase(struct us_data *us, unsigned long Eaddress) { |
| 485 | unsigned char *command = us->iobuf; |
| 486 | int result; |
| 487 | |
| 488 | US_DEBUGP("sddr09_erase: erase address %lu\n", Eaddress); |
| 489 | |
| 490 | memset(command, 0, 12); |
| 491 | command[0] = 0xEA; |
| 492 | command[1] = LUNBITS; |
| 493 | command[6] = MSB_of(Eaddress>>16); |
| 494 | command[7] = LSB_of(Eaddress>>16); |
| 495 | command[8] = MSB_of(Eaddress & 0xFFFF); |
| 496 | command[9] = LSB_of(Eaddress & 0xFFFF); |
| 497 | |
| 498 | result = sddr09_send_scsi_command(us, command, 12); |
| 499 | |
| 500 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 501 | US_DEBUGP("Result for send_control in sddr09_erase %d\n", |
| 502 | result); |
| 503 | |
| 504 | return result; |
| 505 | } |
| 506 | |
| 507 | /* |
| 508 | * Write CIS Command: 12 bytes. |
| 509 | * byte 0: opcode: EE |
| 510 | * bytes 2-5: write address in shorts |
| 511 | * bytes 10-11: sector count |
| 512 | * |
| 513 | * This writes at the indicated address. Don't know how it differs |
| 514 | * from E9. Maybe it does not erase? However, it will also write to |
| 515 | * the CIS. |
| 516 | * |
| 517 | * When two such commands on the same page follow each other directly, |
| 518 | * the second one is not done. |
| 519 | */ |
| 520 | |
| 521 | /* |
| 522 | * Write Command: 12 bytes. |
| 523 | * byte 0: opcode: E9 |
| 524 | * bytes 2-5: write address (big-endian, counting shorts, sector aligned). |
| 525 | * bytes 6-9: erase address (big-endian, counting shorts, sector aligned). |
| 526 | * bytes 10-11: sector count (big-endian, in 512-byte sectors). |
| 527 | * |
| 528 | * If write address equals erase address, the erase is done first, |
| 529 | * otherwise the write is done first. When erase address equals zero |
| 530 | * no erase is done? |
| 531 | */ |
| 532 | static int |
| 533 | sddr09_writeX(struct us_data *us, |
| 534 | unsigned long Waddress, unsigned long Eaddress, |
| 535 | int nr_of_pages, int bulklen, unsigned char *buf, int use_sg) { |
| 536 | |
| 537 | unsigned char *command = us->iobuf; |
| 538 | int result; |
| 539 | |
| 540 | command[0] = 0xE9; |
| 541 | command[1] = LUNBITS; |
| 542 | |
| 543 | command[2] = MSB_of(Waddress>>16); |
| 544 | command[3] = LSB_of(Waddress>>16); |
| 545 | command[4] = MSB_of(Waddress & 0xFFFF); |
| 546 | command[5] = LSB_of(Waddress & 0xFFFF); |
| 547 | |
| 548 | command[6] = MSB_of(Eaddress>>16); |
| 549 | command[7] = LSB_of(Eaddress>>16); |
| 550 | command[8] = MSB_of(Eaddress & 0xFFFF); |
| 551 | command[9] = LSB_of(Eaddress & 0xFFFF); |
| 552 | |
| 553 | command[10] = MSB_of(nr_of_pages); |
| 554 | command[11] = LSB_of(nr_of_pages); |
| 555 | |
| 556 | result = sddr09_send_scsi_command(us, command, 12); |
| 557 | |
| 558 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 559 | US_DEBUGP("Result for send_control in sddr09_writeX %d\n", |
| 560 | result); |
| 561 | return result; |
| 562 | } |
| 563 | |
| 564 | result = usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, |
| 565 | buf, bulklen, use_sg, NULL); |
| 566 | |
| 567 | if (result != USB_STOR_XFER_GOOD) { |
| 568 | US_DEBUGP("Result for bulk_transfer in sddr09_writeX %d\n", |
| 569 | result); |
| 570 | return USB_STOR_TRANSPORT_ERROR; |
| 571 | } |
| 572 | return USB_STOR_TRANSPORT_GOOD; |
| 573 | } |
| 574 | |
| 575 | /* erase address, write same address */ |
| 576 | static int |
| 577 | sddr09_write_inplace(struct us_data *us, unsigned long address, |
| 578 | int nr_of_pages, int pageshift, unsigned char *buf, |
| 579 | int use_sg) { |
| 580 | int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT); |
| 581 | return sddr09_writeX(us, address, address, nr_of_pages, bulklen, |
| 582 | buf, use_sg); |
| 583 | } |
| 584 | |
| 585 | #if 0 |
| 586 | /* |
| 587 | * Read Scatter Gather Command: 3+4n bytes. |
| 588 | * byte 0: opcode E7 |
| 589 | * byte 2: n |
| 590 | * bytes 4i-1,4i,4i+1: page address |
| 591 | * byte 4i+2: page count |
| 592 | * (i=1..n) |
| 593 | * |
| 594 | * This reads several pages from the card to a single memory buffer. |
| 595 | * The last two bits of byte 1 have the same meaning as for E8. |
| 596 | */ |
| 597 | static int |
| 598 | sddr09_read_sg_test_only(struct us_data *us) { |
| 599 | unsigned char *command = us->iobuf; |
| 600 | int result, bulklen, nsg, ct; |
| 601 | unsigned char *buf; |
| 602 | unsigned long address; |
| 603 | |
| 604 | nsg = bulklen = 0; |
| 605 | command[0] = 0xE7; |
| 606 | command[1] = LUNBITS; |
| 607 | command[2] = 0; |
| 608 | address = 040000; ct = 1; |
| 609 | nsg++; |
| 610 | bulklen += (ct << 9); |
| 611 | command[4*nsg+2] = ct; |
| 612 | command[4*nsg+1] = ((address >> 9) & 0xFF); |
| 613 | command[4*nsg+0] = ((address >> 17) & 0xFF); |
| 614 | command[4*nsg-1] = ((address >> 25) & 0xFF); |
| 615 | |
| 616 | address = 0340000; ct = 1; |
| 617 | nsg++; |
| 618 | bulklen += (ct << 9); |
| 619 | command[4*nsg+2] = ct; |
| 620 | command[4*nsg+1] = ((address >> 9) & 0xFF); |
| 621 | command[4*nsg+0] = ((address >> 17) & 0xFF); |
| 622 | command[4*nsg-1] = ((address >> 25) & 0xFF); |
| 623 | |
| 624 | address = 01000000; ct = 2; |
| 625 | nsg++; |
| 626 | bulklen += (ct << 9); |
| 627 | command[4*nsg+2] = ct; |
| 628 | command[4*nsg+1] = ((address >> 9) & 0xFF); |
| 629 | command[4*nsg+0] = ((address >> 17) & 0xFF); |
| 630 | command[4*nsg-1] = ((address >> 25) & 0xFF); |
| 631 | |
| 632 | command[2] = nsg; |
| 633 | |
| 634 | result = sddr09_send_scsi_command(us, command, 4*nsg+3); |
| 635 | |
| 636 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 637 | US_DEBUGP("Result for send_control in sddr09_read_sg %d\n", |
| 638 | result); |
| 639 | return result; |
| 640 | } |
| 641 | |
| 642 | buf = (unsigned char *) kmalloc(bulklen, GFP_NOIO); |
| 643 | if (!buf) |
| 644 | return USB_STOR_TRANSPORT_ERROR; |
| 645 | |
| 646 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, |
| 647 | buf, bulklen, NULL); |
| 648 | kfree(buf); |
| 649 | if (result != USB_STOR_XFER_GOOD) { |
| 650 | US_DEBUGP("Result for bulk_transfer in sddr09_read_sg %d\n", |
| 651 | result); |
| 652 | return USB_STOR_TRANSPORT_ERROR; |
| 653 | } |
| 654 | |
| 655 | return USB_STOR_TRANSPORT_GOOD; |
| 656 | } |
| 657 | #endif |
| 658 | |
| 659 | /* |
| 660 | * Read Status Command: 12 bytes. |
| 661 | * byte 0: opcode: EC |
| 662 | * |
| 663 | * Returns 64 bytes, all zero except for the first. |
| 664 | * bit 0: 1: Error |
| 665 | * bit 5: 1: Suspended |
| 666 | * bit 6: 1: Ready |
| 667 | * bit 7: 1: Not write-protected |
| 668 | */ |
| 669 | |
| 670 | static int |
| 671 | sddr09_read_status(struct us_data *us, unsigned char *status) { |
| 672 | |
| 673 | unsigned char *command = us->iobuf; |
| 674 | unsigned char *data = us->iobuf; |
| 675 | int result; |
| 676 | |
| 677 | US_DEBUGP("Reading status...\n"); |
| 678 | |
| 679 | memset(command, 0, 12); |
| 680 | command[0] = 0xEC; |
| 681 | command[1] = LUNBITS; |
| 682 | |
| 683 | result = sddr09_send_scsi_command(us, command, 12); |
| 684 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 685 | return result; |
| 686 | |
| 687 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, |
| 688 | data, 64, NULL); |
| 689 | *status = data[0]; |
| 690 | return (result == USB_STOR_XFER_GOOD ? |
| 691 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); |
| 692 | } |
| 693 | |
| 694 | static int |
| 695 | sddr09_read_data(struct us_data *us, |
| 696 | unsigned long address, |
| 697 | unsigned int sectors) { |
| 698 | |
| 699 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; |
| 700 | unsigned char *buffer; |
| 701 | unsigned int lba, maxlba, pba; |
| 702 | unsigned int page, pages; |
| 703 | unsigned int len, index, offset; |
| 704 | int result; |
| 705 | |
| 706 | // Since we only read in one block at a time, we have to create |
| 707 | // a bounce buffer and move the data a piece at a time between the |
| 708 | // bounce buffer and the actual transfer buffer. |
| 709 | |
| 710 | len = min(sectors, (unsigned int) info->blocksize) * info->pagesize; |
| 711 | buffer = kmalloc(len, GFP_NOIO); |
| 712 | if (buffer == NULL) { |
| 713 | printk("sddr09_read_data: Out of memory\n"); |
| 714 | return USB_STOR_TRANSPORT_ERROR; |
| 715 | } |
| 716 | |
| 717 | // Figure out the initial LBA and page |
| 718 | lba = address >> info->blockshift; |
| 719 | page = (address & info->blockmask); |
| 720 | maxlba = info->capacity >> (info->pageshift + info->blockshift); |
| 721 | |
| 722 | // This could be made much more efficient by checking for |
| 723 | // contiguous LBA's. Another exercise left to the student. |
| 724 | |
| 725 | result = USB_STOR_TRANSPORT_GOOD; |
| 726 | index = offset = 0; |
| 727 | |
| 728 | while (sectors > 0) { |
| 729 | |
| 730 | /* Find number of pages we can read in this block */ |
| 731 | pages = min(sectors, info->blocksize - page); |
| 732 | len = pages << info->pageshift; |
| 733 | |
| 734 | /* Not overflowing capacity? */ |
| 735 | if (lba >= maxlba) { |
| 736 | US_DEBUGP("Error: Requested lba %u exceeds " |
| 737 | "maximum %u\n", lba, maxlba); |
| 738 | result = USB_STOR_TRANSPORT_ERROR; |
| 739 | break; |
| 740 | } |
| 741 | |
| 742 | /* Find where this lba lives on disk */ |
| 743 | pba = info->lba_to_pba[lba]; |
| 744 | |
| 745 | if (pba == UNDEF) { /* this lba was never written */ |
| 746 | |
| 747 | US_DEBUGP("Read %d zero pages (LBA %d) page %d\n", |
| 748 | pages, lba, page); |
| 749 | |
| 750 | /* This is not really an error. It just means |
| 751 | that the block has never been written. |
| 752 | Instead of returning USB_STOR_TRANSPORT_ERROR |
| 753 | it is better to return all zero data. */ |
| 754 | |
| 755 | memset(buffer, 0, len); |
| 756 | |
| 757 | } else { |
| 758 | US_DEBUGP("Read %d pages, from PBA %d" |
| 759 | " (LBA %d) page %d\n", |
| 760 | pages, pba, lba, page); |
| 761 | |
| 762 | address = ((pba << info->blockshift) + page) << |
| 763 | info->pageshift; |
| 764 | |
| 765 | result = sddr09_read20(us, address>>1, |
| 766 | pages, info->pageshift, buffer, 0); |
| 767 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 768 | break; |
| 769 | } |
| 770 | |
| 771 | // Store the data in the transfer buffer |
| 772 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
| 773 | &index, &offset, TO_XFER_BUF); |
| 774 | |
| 775 | page = 0; |
| 776 | lba++; |
| 777 | sectors -= pages; |
| 778 | } |
| 779 | |
| 780 | kfree(buffer); |
| 781 | return result; |
| 782 | } |
| 783 | |
| 784 | static unsigned int |
| 785 | sddr09_find_unused_pba(struct sddr09_card_info *info, unsigned int lba) { |
| 786 | static unsigned int lastpba = 1; |
| 787 | int zonestart, end, i; |
| 788 | |
| 789 | zonestart = (lba/1000) << 10; |
| 790 | end = info->capacity >> (info->blockshift + info->pageshift); |
| 791 | end -= zonestart; |
| 792 | if (end > 1024) |
| 793 | end = 1024; |
| 794 | |
| 795 | for (i = lastpba+1; i < end; i++) { |
| 796 | if (info->pba_to_lba[zonestart+i] == UNDEF) { |
| 797 | lastpba = i; |
| 798 | return zonestart+i; |
| 799 | } |
| 800 | } |
| 801 | for (i = 0; i <= lastpba; i++) { |
| 802 | if (info->pba_to_lba[zonestart+i] == UNDEF) { |
| 803 | lastpba = i; |
| 804 | return zonestart+i; |
| 805 | } |
| 806 | } |
| 807 | return 0; |
| 808 | } |
| 809 | |
| 810 | static int |
| 811 | sddr09_write_lba(struct us_data *us, unsigned int lba, |
| 812 | unsigned int page, unsigned int pages, |
| 813 | unsigned char *ptr, unsigned char *blockbuffer) { |
| 814 | |
| 815 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; |
| 816 | unsigned long address; |
| 817 | unsigned int pba, lbap; |
| 818 | unsigned int pagelen; |
| 819 | unsigned char *bptr, *cptr, *xptr; |
| 820 | unsigned char ecc[3]; |
| 821 | int i, result, isnew; |
| 822 | |
| 823 | lbap = ((lba % 1000) << 1) | 0x1000; |
| 824 | if (parity[MSB_of(lbap) ^ LSB_of(lbap)]) |
| 825 | lbap ^= 1; |
| 826 | pba = info->lba_to_pba[lba]; |
| 827 | isnew = 0; |
| 828 | |
| 829 | if (pba == UNDEF) { |
| 830 | pba = sddr09_find_unused_pba(info, lba); |
| 831 | if (!pba) { |
| 832 | printk("sddr09_write_lba: Out of unused blocks\n"); |
| 833 | return USB_STOR_TRANSPORT_ERROR; |
| 834 | } |
| 835 | info->pba_to_lba[pba] = lba; |
| 836 | info->lba_to_pba[lba] = pba; |
| 837 | isnew = 1; |
| 838 | } |
| 839 | |
| 840 | if (pba == 1) { |
| 841 | /* Maybe it is impossible to write to PBA 1. |
| 842 | Fake success, but don't do anything. */ |
| 843 | printk("sddr09: avoid writing to pba 1\n"); |
| 844 | return USB_STOR_TRANSPORT_GOOD; |
| 845 | } |
| 846 | |
| 847 | pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT); |
| 848 | |
| 849 | /* read old contents */ |
| 850 | address = (pba << (info->pageshift + info->blockshift)); |
| 851 | result = sddr09_read22(us, address>>1, info->blocksize, |
| 852 | info->pageshift, blockbuffer, 0); |
| 853 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 854 | return result; |
| 855 | |
| 856 | /* check old contents and fill lba */ |
| 857 | for (i = 0; i < info->blocksize; i++) { |
| 858 | bptr = blockbuffer + i*pagelen; |
| 859 | cptr = bptr + info->pagesize; |
| 860 | nand_compute_ecc(bptr, ecc); |
| 861 | if (!nand_compare_ecc(cptr+13, ecc)) { |
| 862 | US_DEBUGP("Warning: bad ecc in page %d- of pba %d\n", |
| 863 | i, pba); |
| 864 | nand_store_ecc(cptr+13, ecc); |
| 865 | } |
| 866 | nand_compute_ecc(bptr+(info->pagesize / 2), ecc); |
| 867 | if (!nand_compare_ecc(cptr+8, ecc)) { |
| 868 | US_DEBUGP("Warning: bad ecc in page %d+ of pba %d\n", |
| 869 | i, pba); |
| 870 | nand_store_ecc(cptr+8, ecc); |
| 871 | } |
| 872 | cptr[6] = cptr[11] = MSB_of(lbap); |
| 873 | cptr[7] = cptr[12] = LSB_of(lbap); |
| 874 | } |
| 875 | |
| 876 | /* copy in new stuff and compute ECC */ |
| 877 | xptr = ptr; |
| 878 | for (i = page; i < page+pages; i++) { |
| 879 | bptr = blockbuffer + i*pagelen; |
| 880 | cptr = bptr + info->pagesize; |
| 881 | memcpy(bptr, xptr, info->pagesize); |
| 882 | xptr += info->pagesize; |
| 883 | nand_compute_ecc(bptr, ecc); |
| 884 | nand_store_ecc(cptr+13, ecc); |
| 885 | nand_compute_ecc(bptr+(info->pagesize / 2), ecc); |
| 886 | nand_store_ecc(cptr+8, ecc); |
| 887 | } |
| 888 | |
| 889 | US_DEBUGP("Rewrite PBA %d (LBA %d)\n", pba, lba); |
| 890 | |
| 891 | result = sddr09_write_inplace(us, address>>1, info->blocksize, |
| 892 | info->pageshift, blockbuffer, 0); |
| 893 | |
| 894 | US_DEBUGP("sddr09_write_inplace returns %d\n", result); |
| 895 | |
| 896 | #if 0 |
| 897 | { |
| 898 | unsigned char status = 0; |
| 899 | int result2 = sddr09_read_status(us, &status); |
| 900 | if (result2 != USB_STOR_TRANSPORT_GOOD) |
| 901 | US_DEBUGP("sddr09_write_inplace: cannot read status\n"); |
| 902 | else if (status != 0xc0) |
| 903 | US_DEBUGP("sddr09_write_inplace: status after write: 0x%x\n", |
| 904 | status); |
| 905 | } |
| 906 | #endif |
| 907 | |
| 908 | #if 0 |
| 909 | { |
| 910 | int result2 = sddr09_test_unit_ready(us); |
| 911 | } |
| 912 | #endif |
| 913 | |
| 914 | return result; |
| 915 | } |
| 916 | |
| 917 | static int |
| 918 | sddr09_write_data(struct us_data *us, |
| 919 | unsigned long address, |
| 920 | unsigned int sectors) { |
| 921 | |
| 922 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; |
| 923 | unsigned int lba, page, pages; |
| 924 | unsigned int pagelen, blocklen; |
| 925 | unsigned char *blockbuffer; |
| 926 | unsigned char *buffer; |
| 927 | unsigned int len, index, offset; |
| 928 | int result; |
| 929 | |
| 930 | // blockbuffer is used for reading in the old data, overwriting |
| 931 | // with the new data, and performing ECC calculations |
| 932 | |
| 933 | /* TODO: instead of doing kmalloc/kfree for each write, |
| 934 | add a bufferpointer to the info structure */ |
| 935 | |
| 936 | pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT); |
| 937 | blocklen = (pagelen << info->blockshift); |
| 938 | blockbuffer = kmalloc(blocklen, GFP_NOIO); |
| 939 | if (!blockbuffer) { |
| 940 | printk("sddr09_write_data: Out of memory\n"); |
| 941 | return USB_STOR_TRANSPORT_ERROR; |
| 942 | } |
| 943 | |
| 944 | // Since we don't write the user data directly to the device, |
| 945 | // we have to create a bounce buffer and move the data a piece |
| 946 | // at a time between the bounce buffer and the actual transfer buffer. |
| 947 | |
| 948 | len = min(sectors, (unsigned int) info->blocksize) * info->pagesize; |
| 949 | buffer = kmalloc(len, GFP_NOIO); |
| 950 | if (buffer == NULL) { |
| 951 | printk("sddr09_write_data: Out of memory\n"); |
| 952 | kfree(blockbuffer); |
| 953 | return USB_STOR_TRANSPORT_ERROR; |
| 954 | } |
| 955 | |
| 956 | // Figure out the initial LBA and page |
| 957 | lba = address >> info->blockshift; |
| 958 | page = (address & info->blockmask); |
| 959 | |
| 960 | result = USB_STOR_TRANSPORT_GOOD; |
| 961 | index = offset = 0; |
| 962 | |
| 963 | while (sectors > 0) { |
| 964 | |
| 965 | // Write as many sectors as possible in this block |
| 966 | |
| 967 | pages = min(sectors, info->blocksize - page); |
| 968 | len = (pages << info->pageshift); |
| 969 | |
| 970 | // Get the data from the transfer buffer |
| 971 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
| 972 | &index, &offset, FROM_XFER_BUF); |
| 973 | |
| 974 | result = sddr09_write_lba(us, lba, page, pages, |
| 975 | buffer, blockbuffer); |
| 976 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 977 | break; |
| 978 | |
| 979 | page = 0; |
| 980 | lba++; |
| 981 | sectors -= pages; |
| 982 | } |
| 983 | |
| 984 | kfree(buffer); |
| 985 | kfree(blockbuffer); |
| 986 | |
| 987 | return result; |
| 988 | } |
| 989 | |
| 990 | static int |
| 991 | sddr09_read_control(struct us_data *us, |
| 992 | unsigned long address, |
| 993 | unsigned int blocks, |
| 994 | unsigned char *content, |
| 995 | int use_sg) { |
| 996 | |
| 997 | US_DEBUGP("Read control address %lu, blocks %d\n", |
| 998 | address, blocks); |
| 999 | |
| 1000 | return sddr09_read21(us, address, blocks, |
| 1001 | CONTROL_SHIFT, content, use_sg); |
| 1002 | } |
| 1003 | |
| 1004 | /* |
| 1005 | * Read Device ID Command: 12 bytes. |
| 1006 | * byte 0: opcode: ED |
| 1007 | * |
| 1008 | * Returns 2 bytes: Manufacturer ID and Device ID. |
| 1009 | * On more recent cards 3 bytes: the third byte is an option code A5 |
| 1010 | * signifying that the secret command to read an 128-bit ID is available. |
| 1011 | * On still more recent cards 4 bytes: the fourth byte C0 means that |
| 1012 | * a second read ID cmd is available. |
| 1013 | */ |
| 1014 | static int |
| 1015 | sddr09_read_deviceID(struct us_data *us, unsigned char *deviceID) { |
| 1016 | unsigned char *command = us->iobuf; |
| 1017 | unsigned char *content = us->iobuf; |
| 1018 | int result, i; |
| 1019 | |
| 1020 | memset(command, 0, 12); |
| 1021 | command[0] = 0xED; |
| 1022 | command[1] = LUNBITS; |
| 1023 | |
| 1024 | result = sddr09_send_scsi_command(us, command, 12); |
| 1025 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 1026 | return result; |
| 1027 | |
| 1028 | result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, |
| 1029 | content, 64, NULL); |
| 1030 | |
| 1031 | for (i = 0; i < 4; i++) |
| 1032 | deviceID[i] = content[i]; |
| 1033 | |
| 1034 | return (result == USB_STOR_XFER_GOOD ? |
| 1035 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); |
| 1036 | } |
| 1037 | |
| 1038 | static int |
| 1039 | sddr09_get_wp(struct us_data *us, struct sddr09_card_info *info) { |
| 1040 | int result; |
| 1041 | unsigned char status; |
| 1042 | |
| 1043 | result = sddr09_read_status(us, &status); |
| 1044 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 1045 | US_DEBUGP("sddr09_get_wp: read_status fails\n"); |
| 1046 | return result; |
| 1047 | } |
| 1048 | US_DEBUGP("sddr09_get_wp: status 0x%02X", status); |
| 1049 | if ((status & 0x80) == 0) { |
| 1050 | info->flags |= SDDR09_WP; /* write protected */ |
| 1051 | US_DEBUGP(" WP"); |
| 1052 | } |
| 1053 | if (status & 0x40) |
| 1054 | US_DEBUGP(" Ready"); |
| 1055 | if (status & LUNBITS) |
| 1056 | US_DEBUGP(" Suspended"); |
| 1057 | if (status & 0x1) |
| 1058 | US_DEBUGP(" Error"); |
| 1059 | US_DEBUGP("\n"); |
| 1060 | return USB_STOR_TRANSPORT_GOOD; |
| 1061 | } |
| 1062 | |
| 1063 | #if 0 |
| 1064 | /* |
| 1065 | * Reset Command: 12 bytes. |
| 1066 | * byte 0: opcode: EB |
| 1067 | */ |
| 1068 | static int |
| 1069 | sddr09_reset(struct us_data *us) { |
| 1070 | |
| 1071 | unsigned char *command = us->iobuf; |
| 1072 | |
| 1073 | memset(command, 0, 12); |
| 1074 | command[0] = 0xEB; |
| 1075 | command[1] = LUNBITS; |
| 1076 | |
| 1077 | return sddr09_send_scsi_command(us, command, 12); |
| 1078 | } |
| 1079 | #endif |
| 1080 | |
| 1081 | static struct nand_flash_dev * |
| 1082 | sddr09_get_cardinfo(struct us_data *us, unsigned char flags) { |
| 1083 | struct nand_flash_dev *cardinfo; |
| 1084 | unsigned char deviceID[4]; |
| 1085 | char blurbtxt[256]; |
| 1086 | int result; |
| 1087 | |
| 1088 | US_DEBUGP("Reading capacity...\n"); |
| 1089 | |
| 1090 | result = sddr09_read_deviceID(us, deviceID); |
| 1091 | |
| 1092 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 1093 | US_DEBUGP("Result of read_deviceID is %d\n", result); |
| 1094 | printk("sddr09: could not read card info\n"); |
| 1095 | return NULL; |
| 1096 | } |
| 1097 | |
| 1098 | sprintf(blurbtxt, "sddr09: Found Flash card, ID = %02X %02X %02X %02X", |
| 1099 | deviceID[0], deviceID[1], deviceID[2], deviceID[3]); |
| 1100 | |
| 1101 | /* Byte 0 is the manufacturer */ |
| 1102 | sprintf(blurbtxt + strlen(blurbtxt), |
| 1103 | ": Manuf. %s", |
| 1104 | nand_flash_manufacturer(deviceID[0])); |
| 1105 | |
| 1106 | /* Byte 1 is the device type */ |
| 1107 | cardinfo = nand_find_id(deviceID[1]); |
| 1108 | if (cardinfo) { |
| 1109 | /* MB or MiB? It is neither. A 16 MB card has |
| 1110 | 17301504 raw bytes, of which 16384000 are |
| 1111 | usable for user data. */ |
| 1112 | sprintf(blurbtxt + strlen(blurbtxt), |
| 1113 | ", %d MB", 1<<(cardinfo->chipshift - 20)); |
| 1114 | } else { |
| 1115 | sprintf(blurbtxt + strlen(blurbtxt), |
| 1116 | ", type unrecognized"); |
| 1117 | } |
| 1118 | |
| 1119 | /* Byte 2 is code to signal availability of 128-bit ID */ |
| 1120 | if (deviceID[2] == 0xa5) { |
| 1121 | sprintf(blurbtxt + strlen(blurbtxt), |
| 1122 | ", 128-bit ID"); |
| 1123 | } |
| 1124 | |
| 1125 | /* Byte 3 announces the availability of another read ID command */ |
| 1126 | if (deviceID[3] == 0xc0) { |
| 1127 | sprintf(blurbtxt + strlen(blurbtxt), |
| 1128 | ", extra cmd"); |
| 1129 | } |
| 1130 | |
| 1131 | if (flags & SDDR09_WP) |
| 1132 | sprintf(blurbtxt + strlen(blurbtxt), |
| 1133 | ", WP"); |
| 1134 | |
| 1135 | printk("%s\n", blurbtxt); |
| 1136 | |
| 1137 | return cardinfo; |
| 1138 | } |
| 1139 | |
| 1140 | static int |
| 1141 | sddr09_read_map(struct us_data *us) { |
| 1142 | |
| 1143 | struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra; |
| 1144 | int numblocks, alloc_len, alloc_blocks; |
| 1145 | int i, j, result; |
| 1146 | unsigned char *buffer, *buffer_end, *ptr; |
| 1147 | unsigned int lba, lbact; |
| 1148 | |
| 1149 | if (!info->capacity) |
| 1150 | return -1; |
| 1151 | |
| 1152 | // size of a block is 1 << (blockshift + pageshift) bytes |
| 1153 | // divide into the total capacity to get the number of blocks |
| 1154 | |
| 1155 | numblocks = info->capacity >> (info->blockshift + info->pageshift); |
| 1156 | |
| 1157 | // read 64 bytes for every block (actually 1 << CONTROL_SHIFT) |
| 1158 | // but only use a 64 KB buffer |
| 1159 | // buffer size used must be a multiple of (1 << CONTROL_SHIFT) |
| 1160 | #define SDDR09_READ_MAP_BUFSZ 65536 |
| 1161 | |
| 1162 | alloc_blocks = min(numblocks, SDDR09_READ_MAP_BUFSZ >> CONTROL_SHIFT); |
| 1163 | alloc_len = (alloc_blocks << CONTROL_SHIFT); |
| 1164 | buffer = kmalloc(alloc_len, GFP_NOIO); |
| 1165 | if (buffer == NULL) { |
| 1166 | printk("sddr09_read_map: out of memory\n"); |
| 1167 | result = -1; |
| 1168 | goto done; |
| 1169 | } |
| 1170 | buffer_end = buffer + alloc_len; |
| 1171 | |
| 1172 | #undef SDDR09_READ_MAP_BUFSZ |
| 1173 | |
| 1174 | kfree(info->lba_to_pba); |
| 1175 | kfree(info->pba_to_lba); |
| 1176 | info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO); |
| 1177 | info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO); |
| 1178 | |
| 1179 | if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) { |
| 1180 | printk("sddr09_read_map: out of memory\n"); |
| 1181 | result = -1; |
| 1182 | goto done; |
| 1183 | } |
| 1184 | |
| 1185 | for (i = 0; i < numblocks; i++) |
| 1186 | info->lba_to_pba[i] = info->pba_to_lba[i] = UNDEF; |
| 1187 | |
| 1188 | /* |
| 1189 | * Define lba-pba translation table |
| 1190 | */ |
| 1191 | |
| 1192 | ptr = buffer_end; |
| 1193 | for (i = 0; i < numblocks; i++) { |
| 1194 | ptr += (1 << CONTROL_SHIFT); |
| 1195 | if (ptr >= buffer_end) { |
| 1196 | unsigned long address; |
| 1197 | |
| 1198 | address = i << (info->pageshift + info->blockshift); |
| 1199 | result = sddr09_read_control( |
| 1200 | us, address>>1, |
| 1201 | min(alloc_blocks, numblocks - i), |
| 1202 | buffer, 0); |
| 1203 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 1204 | result = -1; |
| 1205 | goto done; |
| 1206 | } |
| 1207 | ptr = buffer; |
| 1208 | } |
| 1209 | |
| 1210 | if (i == 0 || i == 1) { |
| 1211 | info->pba_to_lba[i] = UNUSABLE; |
| 1212 | continue; |
| 1213 | } |
| 1214 | |
| 1215 | /* special PBAs have control field 0^16 */ |
| 1216 | for (j = 0; j < 16; j++) |
| 1217 | if (ptr[j] != 0) |
| 1218 | goto nonz; |
| 1219 | info->pba_to_lba[i] = UNUSABLE; |
| 1220 | printk("sddr09: PBA %d has no logical mapping\n", i); |
| 1221 | continue; |
| 1222 | |
| 1223 | nonz: |
| 1224 | /* unwritten PBAs have control field FF^16 */ |
| 1225 | for (j = 0; j < 16; j++) |
| 1226 | if (ptr[j] != 0xff) |
| 1227 | goto nonff; |
| 1228 | continue; |
| 1229 | |
| 1230 | nonff: |
| 1231 | /* normal PBAs start with six FFs */ |
| 1232 | if (j < 6) { |
| 1233 | printk("sddr09: PBA %d has no logical mapping: " |
| 1234 | "reserved area = %02X%02X%02X%02X " |
| 1235 | "data status %02X block status %02X\n", |
| 1236 | i, ptr[0], ptr[1], ptr[2], ptr[3], |
| 1237 | ptr[4], ptr[5]); |
| 1238 | info->pba_to_lba[i] = UNUSABLE; |
| 1239 | continue; |
| 1240 | } |
| 1241 | |
| 1242 | if ((ptr[6] >> 4) != 0x01) { |
| 1243 | printk("sddr09: PBA %d has invalid address field " |
| 1244 | "%02X%02X/%02X%02X\n", |
| 1245 | i, ptr[6], ptr[7], ptr[11], ptr[12]); |
| 1246 | info->pba_to_lba[i] = UNUSABLE; |
| 1247 | continue; |
| 1248 | } |
| 1249 | |
| 1250 | /* check even parity */ |
| 1251 | if (parity[ptr[6] ^ ptr[7]]) { |
| 1252 | printk("sddr09: Bad parity in LBA for block %d" |
| 1253 | " (%02X %02X)\n", i, ptr[6], ptr[7]); |
| 1254 | info->pba_to_lba[i] = UNUSABLE; |
| 1255 | continue; |
| 1256 | } |
| 1257 | |
| 1258 | lba = short_pack(ptr[7], ptr[6]); |
| 1259 | lba = (lba & 0x07FF) >> 1; |
| 1260 | |
| 1261 | /* |
| 1262 | * Every 1024 physical blocks ("zone"), the LBA numbers |
| 1263 | * go back to zero, but are within a higher block of LBA's. |
| 1264 | * Also, there is a maximum of 1000 LBA's per zone. |
| 1265 | * In other words, in PBA 1024-2047 you will find LBA 0-999 |
| 1266 | * which are really LBA 1000-1999. This allows for 24 bad |
| 1267 | * or special physical blocks per zone. |
| 1268 | */ |
| 1269 | |
| 1270 | if (lba >= 1000) { |
| 1271 | printk("sddr09: Bad low LBA %d for block %d\n", |
| 1272 | lba, i); |
| 1273 | goto possibly_erase; |
| 1274 | } |
| 1275 | |
| 1276 | lba += 1000*(i/0x400); |
| 1277 | |
| 1278 | if (info->lba_to_pba[lba] != UNDEF) { |
| 1279 | printk("sddr09: LBA %d seen for PBA %d and %d\n", |
| 1280 | lba, info->lba_to_pba[lba], i); |
| 1281 | goto possibly_erase; |
| 1282 | } |
| 1283 | |
| 1284 | info->pba_to_lba[i] = lba; |
| 1285 | info->lba_to_pba[lba] = i; |
| 1286 | continue; |
| 1287 | |
| 1288 | possibly_erase: |
| 1289 | if (erase_bad_lba_entries) { |
| 1290 | unsigned long address; |
| 1291 | |
| 1292 | address = (i << (info->pageshift + info->blockshift)); |
| 1293 | sddr09_erase(us, address>>1); |
| 1294 | info->pba_to_lba[i] = UNDEF; |
| 1295 | } else |
| 1296 | info->pba_to_lba[i] = UNUSABLE; |
| 1297 | } |
| 1298 | |
| 1299 | /* |
| 1300 | * Approximate capacity. This is not entirely correct yet, |
| 1301 | * since a zone with less than 1000 usable pages leads to |
| 1302 | * missing LBAs. Especially if it is the last zone, some |
| 1303 | * LBAs can be past capacity. |
| 1304 | */ |
| 1305 | lbact = 0; |
| 1306 | for (i = 0; i < numblocks; i += 1024) { |
| 1307 | int ct = 0; |
| 1308 | |
| 1309 | for (j = 0; j < 1024 && i+j < numblocks; j++) { |
| 1310 | if (info->pba_to_lba[i+j] != UNUSABLE) { |
| 1311 | if (ct >= 1000) |
| 1312 | info->pba_to_lba[i+j] = SPARE; |
| 1313 | else |
| 1314 | ct++; |
| 1315 | } |
| 1316 | } |
| 1317 | lbact += ct; |
| 1318 | } |
| 1319 | info->lbact = lbact; |
| 1320 | US_DEBUGP("Found %d LBA's\n", lbact); |
| 1321 | result = 0; |
| 1322 | |
| 1323 | done: |
| 1324 | if (result != 0) { |
| 1325 | kfree(info->lba_to_pba); |
| 1326 | kfree(info->pba_to_lba); |
| 1327 | info->lba_to_pba = NULL; |
| 1328 | info->pba_to_lba = NULL; |
| 1329 | } |
| 1330 | kfree(buffer); |
| 1331 | return result; |
| 1332 | } |
| 1333 | |
| 1334 | static void |
| 1335 | sddr09_card_info_destructor(void *extra) { |
| 1336 | struct sddr09_card_info *info = (struct sddr09_card_info *)extra; |
| 1337 | |
| 1338 | if (!info) |
| 1339 | return; |
| 1340 | |
| 1341 | kfree(info->lba_to_pba); |
| 1342 | kfree(info->pba_to_lba); |
| 1343 | } |
| 1344 | |
| 1345 | static void |
| 1346 | sddr09_init_card_info(struct us_data *us) { |
| 1347 | if (!us->extra) { |
| 1348 | us->extra = kmalloc(sizeof(struct sddr09_card_info), GFP_NOIO); |
| 1349 | if (us->extra) { |
| 1350 | memset(us->extra, 0, sizeof(struct sddr09_card_info)); |
| 1351 | us->extra_destructor = sddr09_card_info_destructor; |
| 1352 | } |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | /* |
| 1357 | * This is needed at a very early stage. If this is not listed in the |
| 1358 | * unusual devices list but called from here then LUN 0 of the combo reader |
| 1359 | * is not recognized. But I do not know what precisely these calls do. |
| 1360 | */ |
| 1361 | int |
| 1362 | sddr09_init(struct us_data *us) { |
| 1363 | int result; |
| 1364 | unsigned char *data = us->iobuf; |
| 1365 | |
| 1366 | result = sddr09_send_command(us, 0x01, USB_DIR_IN, data, 2); |
| 1367 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 1368 | US_DEBUGP("sddr09_init: send_command fails\n"); |
| 1369 | return result; |
| 1370 | } |
| 1371 | |
| 1372 | US_DEBUGP("SDDR09init: %02X %02X\n", data[0], data[1]); |
| 1373 | // get 07 02 |
| 1374 | |
| 1375 | result = sddr09_send_command(us, 0x08, USB_DIR_IN, data, 2); |
| 1376 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 1377 | US_DEBUGP("sddr09_init: 2nd send_command fails\n"); |
| 1378 | return result; |
| 1379 | } |
| 1380 | |
| 1381 | US_DEBUGP("SDDR09init: %02X %02X\n", data[0], data[1]); |
| 1382 | // get 07 00 |
| 1383 | |
| 1384 | result = sddr09_request_sense(us, data, 18); |
| 1385 | if (result == USB_STOR_TRANSPORT_GOOD && data[2] != 0) { |
| 1386 | int j; |
| 1387 | for (j=0; j<18; j++) |
| 1388 | printk(" %02X", data[j]); |
| 1389 | printk("\n"); |
| 1390 | // get 70 00 00 00 00 00 00 * 00 00 00 00 00 00 |
| 1391 | // 70: current command |
| 1392 | // sense key 0, sense code 0, extd sense code 0 |
| 1393 | // additional transfer length * = sizeof(data) - 7 |
| 1394 | // Or: 70 00 06 00 00 00 00 0b 00 00 00 00 28 00 00 00 00 00 |
| 1395 | // sense key 06, sense code 28: unit attention, |
| 1396 | // not ready to ready transition |
| 1397 | } |
| 1398 | |
| 1399 | // test unit ready |
| 1400 | |
| 1401 | return USB_STOR_TRANSPORT_GOOD; /* not result */ |
| 1402 | } |
| 1403 | |
| 1404 | /* |
| 1405 | * Transport for the Sandisk SDDR-09 |
| 1406 | */ |
| 1407 | int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us) |
| 1408 | { |
| 1409 | static unsigned char sensekey = 0, sensecode = 0; |
| 1410 | static unsigned char havefakesense = 0; |
| 1411 | int result, i; |
| 1412 | unsigned char *ptr = us->iobuf; |
| 1413 | unsigned long capacity; |
| 1414 | unsigned int page, pages; |
| 1415 | |
| 1416 | struct sddr09_card_info *info; |
| 1417 | |
| 1418 | static unsigned char inquiry_response[8] = { |
| 1419 | 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00 |
| 1420 | }; |
| 1421 | |
| 1422 | /* note: no block descriptor support */ |
| 1423 | static unsigned char mode_page_01[19] = { |
| 1424 | 0x00, 0x0F, 0x00, 0x0, 0x0, 0x0, 0x00, |
| 1425 | 0x01, 0x0A, |
| 1426 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| 1427 | }; |
| 1428 | |
| 1429 | info = (struct sddr09_card_info *)us->extra; |
| 1430 | if (!info) { |
| 1431 | nand_init_ecc(); |
| 1432 | sddr09_init_card_info(us); |
| 1433 | info = (struct sddr09_card_info *)us->extra; |
| 1434 | if (!info) |
| 1435 | return USB_STOR_TRANSPORT_ERROR; |
| 1436 | } |
| 1437 | |
| 1438 | if (srb->cmnd[0] == REQUEST_SENSE && havefakesense) { |
| 1439 | /* for a faked command, we have to follow with a faked sense */ |
| 1440 | memset(ptr, 0, 18); |
| 1441 | ptr[0] = 0x70; |
| 1442 | ptr[2] = sensekey; |
| 1443 | ptr[7] = 11; |
| 1444 | ptr[12] = sensecode; |
| 1445 | usb_stor_set_xfer_buf(ptr, 18, srb); |
| 1446 | sensekey = sensecode = havefakesense = 0; |
| 1447 | return USB_STOR_TRANSPORT_GOOD; |
| 1448 | } |
| 1449 | |
| 1450 | havefakesense = 1; |
| 1451 | |
| 1452 | /* Dummy up a response for INQUIRY since SDDR09 doesn't |
| 1453 | respond to INQUIRY commands */ |
| 1454 | |
| 1455 | if (srb->cmnd[0] == INQUIRY) { |
| 1456 | memcpy(ptr, inquiry_response, 8); |
| 1457 | fill_inquiry_response(us, ptr, 36); |
| 1458 | return USB_STOR_TRANSPORT_GOOD; |
| 1459 | } |
| 1460 | |
| 1461 | if (srb->cmnd[0] == READ_CAPACITY) { |
| 1462 | struct nand_flash_dev *cardinfo; |
| 1463 | |
| 1464 | sddr09_get_wp(us, info); /* read WP bit */ |
| 1465 | |
| 1466 | cardinfo = sddr09_get_cardinfo(us, info->flags); |
| 1467 | if (!cardinfo) { |
| 1468 | /* probably no media */ |
| 1469 | init_error: |
| 1470 | sensekey = 0x02; /* not ready */ |
| 1471 | sensecode = 0x3a; /* medium not present */ |
| 1472 | return USB_STOR_TRANSPORT_FAILED; |
| 1473 | } |
| 1474 | |
| 1475 | info->capacity = (1 << cardinfo->chipshift); |
| 1476 | info->pageshift = cardinfo->pageshift; |
| 1477 | info->pagesize = (1 << info->pageshift); |
| 1478 | info->blockshift = cardinfo->blockshift; |
| 1479 | info->blocksize = (1 << info->blockshift); |
| 1480 | info->blockmask = info->blocksize - 1; |
| 1481 | |
| 1482 | // map initialization, must follow get_cardinfo() |
| 1483 | if (sddr09_read_map(us)) { |
| 1484 | /* probably out of memory */ |
| 1485 | goto init_error; |
| 1486 | } |
| 1487 | |
| 1488 | // Report capacity |
| 1489 | |
| 1490 | capacity = (info->lbact << info->blockshift) - 1; |
| 1491 | |
| 1492 | ((__be32 *) ptr)[0] = cpu_to_be32(capacity); |
| 1493 | |
| 1494 | // Report page size |
| 1495 | |
| 1496 | ((__be32 *) ptr)[1] = cpu_to_be32(info->pagesize); |
| 1497 | usb_stor_set_xfer_buf(ptr, 8, srb); |
| 1498 | |
| 1499 | return USB_STOR_TRANSPORT_GOOD; |
| 1500 | } |
| 1501 | |
| 1502 | if (srb->cmnd[0] == MODE_SENSE_10) { |
| 1503 | int modepage = (srb->cmnd[2] & 0x3F); |
| 1504 | |
| 1505 | /* They ask for the Read/Write error recovery page, |
| 1506 | or for all pages. */ |
| 1507 | /* %% We should check DBD %% */ |
| 1508 | if (modepage == 0x01 || modepage == 0x3F) { |
| 1509 | US_DEBUGP("SDDR09: Dummy up request for " |
| 1510 | "mode page 0x%x\n", modepage); |
| 1511 | |
| 1512 | memcpy(ptr, mode_page_01, sizeof(mode_page_01)); |
| 1513 | ((__be16*)ptr)[0] = cpu_to_be16(sizeof(mode_page_01) - 2); |
| 1514 | ptr[3] = (info->flags & SDDR09_WP) ? 0x80 : 0; |
| 1515 | usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb); |
| 1516 | return USB_STOR_TRANSPORT_GOOD; |
| 1517 | } |
| 1518 | |
| 1519 | sensekey = 0x05; /* illegal request */ |
| 1520 | sensecode = 0x24; /* invalid field in CDB */ |
| 1521 | return USB_STOR_TRANSPORT_FAILED; |
| 1522 | } |
| 1523 | |
| 1524 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) |
| 1525 | return USB_STOR_TRANSPORT_GOOD; |
| 1526 | |
| 1527 | havefakesense = 0; |
| 1528 | |
| 1529 | if (srb->cmnd[0] == READ_10) { |
| 1530 | |
| 1531 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); |
| 1532 | page <<= 16; |
| 1533 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); |
| 1534 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); |
| 1535 | |
| 1536 | US_DEBUGP("READ_10: read page %d pagect %d\n", |
| 1537 | page, pages); |
| 1538 | |
| 1539 | return sddr09_read_data(us, page, pages); |
| 1540 | } |
| 1541 | |
| 1542 | if (srb->cmnd[0] == WRITE_10) { |
| 1543 | |
| 1544 | page = short_pack(srb->cmnd[3], srb->cmnd[2]); |
| 1545 | page <<= 16; |
| 1546 | page |= short_pack(srb->cmnd[5], srb->cmnd[4]); |
| 1547 | pages = short_pack(srb->cmnd[8], srb->cmnd[7]); |
| 1548 | |
| 1549 | US_DEBUGP("WRITE_10: write page %d pagect %d\n", |
| 1550 | page, pages); |
| 1551 | |
| 1552 | return sddr09_write_data(us, page, pages); |
| 1553 | } |
| 1554 | |
| 1555 | /* catch-all for all other commands, except |
| 1556 | * pass TEST_UNIT_READY and REQUEST_SENSE through |
| 1557 | */ |
| 1558 | if (srb->cmnd[0] != TEST_UNIT_READY && |
| 1559 | srb->cmnd[0] != REQUEST_SENSE) { |
| 1560 | sensekey = 0x05; /* illegal request */ |
| 1561 | sensecode = 0x20; /* invalid command */ |
| 1562 | havefakesense = 1; |
| 1563 | return USB_STOR_TRANSPORT_FAILED; |
| 1564 | } |
| 1565 | |
| 1566 | for (; srb->cmd_len<12; srb->cmd_len++) |
| 1567 | srb->cmnd[srb->cmd_len] = 0; |
| 1568 | |
| 1569 | srb->cmnd[1] = LUNBITS; |
| 1570 | |
| 1571 | ptr[0] = 0; |
| 1572 | for (i=0; i<12; i++) |
| 1573 | sprintf(ptr+strlen(ptr), "%02X ", srb->cmnd[i]); |
| 1574 | |
| 1575 | US_DEBUGP("SDDR09: Send control for command %s\n", ptr); |
| 1576 | |
| 1577 | result = sddr09_send_scsi_command(us, srb->cmnd, 12); |
| 1578 | if (result != USB_STOR_TRANSPORT_GOOD) { |
| 1579 | US_DEBUGP("sddr09_transport: sddr09_send_scsi_command " |
| 1580 | "returns %d\n", result); |
| 1581 | return result; |
| 1582 | } |
| 1583 | |
| 1584 | if (srb->request_bufflen == 0) |
| 1585 | return USB_STOR_TRANSPORT_GOOD; |
| 1586 | |
| 1587 | if (srb->sc_data_direction == DMA_TO_DEVICE || |
| 1588 | srb->sc_data_direction == DMA_FROM_DEVICE) { |
| 1589 | unsigned int pipe = (srb->sc_data_direction == DMA_TO_DEVICE) |
| 1590 | ? us->send_bulk_pipe : us->recv_bulk_pipe; |
| 1591 | |
| 1592 | US_DEBUGP("SDDR09: %s %d bytes\n", |
| 1593 | (srb->sc_data_direction == DMA_TO_DEVICE) ? |
| 1594 | "sending" : "receiving", |
| 1595 | srb->request_bufflen); |
| 1596 | |
| 1597 | result = usb_stor_bulk_transfer_sg(us, pipe, |
| 1598 | srb->request_buffer, |
| 1599 | srb->request_bufflen, |
| 1600 | srb->use_sg, &srb->resid); |
| 1601 | |
| 1602 | return (result == USB_STOR_XFER_GOOD ? |
| 1603 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); |
| 1604 | } |
| 1605 | |
| 1606 | return USB_STOR_TRANSPORT_GOOD; |
| 1607 | } |
| 1608 | |