1 /* 2 * (C) Copyright 2001 3 * Denis Peter, MPL AG Switzerland 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <inttypes.h> 11 #include <pci.h> 12 #include <scsi.h> 13 #include <dm/device-internal.h> 14 #include <dm/uclass-internal.h> 15 16 #if !defined(CONFIG_DM_SCSI) 17 # ifdef CONFIG_SCSI_DEV_LIST 18 # define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST 19 # else 20 # ifdef CONFIG_SATA_ULI5288 21 22 # define SCSI_VEND_ID 0x10b9 23 # define SCSI_DEV_ID 0x5288 24 25 # elif !defined(CONFIG_SCSI_AHCI_PLAT) 26 # error no scsi device defined 27 # endif 28 # define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID} 29 # endif 30 #endif 31 32 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT) && \ 33 !defined(CONFIG_DM_SCSI) 34 const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST }; 35 #endif 36 static struct scsi_cmd tempccb; /* temporary scsi command buffer */ 37 38 static unsigned char tempbuff[512]; /* temporary data buffer */ 39 40 #if !defined(CONFIG_DM_SCSI) 41 static int scsi_max_devs; /* number of highest available scsi device */ 42 43 static int scsi_curr_dev; /* current device */ 44 45 static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE]; 46 #endif 47 48 /* almost the maximum amount of the scsi_ext command.. */ 49 #define SCSI_MAX_READ_BLK 0xFFFF 50 #define SCSI_LBA48_READ 0xFFFFFFF 51 52 static void scsi_print_error(struct scsi_cmd *pccb) 53 { 54 /* Dummy function that could print an error for debugging */ 55 } 56 57 #ifdef CONFIG_SYS_64BIT_LBA 58 void scsi_setup_read16(struct scsi_cmd *pccb, lbaint_t start, 59 unsigned long blocks) 60 { 61 pccb->cmd[0] = SCSI_READ16; 62 pccb->cmd[1] = pccb->lun << 5; 63 pccb->cmd[2] = (unsigned char)(start >> 56) & 0xff; 64 pccb->cmd[3] = (unsigned char)(start >> 48) & 0xff; 65 pccb->cmd[4] = (unsigned char)(start >> 40) & 0xff; 66 pccb->cmd[5] = (unsigned char)(start >> 32) & 0xff; 67 pccb->cmd[6] = (unsigned char)(start >> 24) & 0xff; 68 pccb->cmd[7] = (unsigned char)(start >> 16) & 0xff; 69 pccb->cmd[8] = (unsigned char)(start >> 8) & 0xff; 70 pccb->cmd[9] = (unsigned char)start & 0xff; 71 pccb->cmd[10] = 0; 72 pccb->cmd[11] = (unsigned char)(blocks >> 24) & 0xff; 73 pccb->cmd[12] = (unsigned char)(blocks >> 16) & 0xff; 74 pccb->cmd[13] = (unsigned char)(blocks >> 8) & 0xff; 75 pccb->cmd[14] = (unsigned char)blocks & 0xff; 76 pccb->cmd[15] = 0; 77 pccb->cmdlen = 16; 78 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ 79 debug("scsi_setup_read16: cmd: %02X %02X startblk %02X%02X%02X%02X%02X%02X%02X%02X blccnt %02X%02X%02X%02X\n", 80 pccb->cmd[0], pccb->cmd[1], 81 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5], 82 pccb->cmd[6], pccb->cmd[7], pccb->cmd[8], pccb->cmd[9], 83 pccb->cmd[11], pccb->cmd[12], pccb->cmd[13], pccb->cmd[14]); 84 } 85 #endif 86 87 static void scsi_setup_read_ext(struct scsi_cmd *pccb, lbaint_t start, 88 unsigned short blocks) 89 { 90 pccb->cmd[0] = SCSI_READ10; 91 pccb->cmd[1] = pccb->lun << 5; 92 pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff; 93 pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff; 94 pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff; 95 pccb->cmd[5] = (unsigned char)start & 0xff; 96 pccb->cmd[6] = 0; 97 pccb->cmd[7] = (unsigned char)(blocks >> 8) & 0xff; 98 pccb->cmd[8] = (unsigned char)blocks & 0xff; 99 pccb->cmd[6] = 0; 100 pccb->cmdlen = 10; 101 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ 102 debug("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n", 103 pccb->cmd[0], pccb->cmd[1], 104 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5], 105 pccb->cmd[7], pccb->cmd[8]); 106 } 107 108 static void scsi_setup_write_ext(struct scsi_cmd *pccb, lbaint_t start, 109 unsigned short blocks) 110 { 111 pccb->cmd[0] = SCSI_WRITE10; 112 pccb->cmd[1] = pccb->lun << 5; 113 pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff; 114 pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff; 115 pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff; 116 pccb->cmd[5] = (unsigned char)start & 0xff; 117 pccb->cmd[6] = 0; 118 pccb->cmd[7] = ((unsigned char)(blocks >> 8)) & 0xff; 119 pccb->cmd[8] = (unsigned char)blocks & 0xff; 120 pccb->cmd[9] = 0; 121 pccb->cmdlen = 10; 122 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ 123 debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n", 124 __func__, 125 pccb->cmd[0], pccb->cmd[1], 126 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5], 127 pccb->cmd[7], pccb->cmd[8]); 128 } 129 130 static void scsi_setup_inquiry(struct scsi_cmd *pccb) 131 { 132 pccb->cmd[0] = SCSI_INQUIRY; 133 pccb->cmd[1] = pccb->lun << 5; 134 pccb->cmd[2] = 0; 135 pccb->cmd[3] = 0; 136 if (pccb->datalen > 255) 137 pccb->cmd[4] = 255; 138 else 139 pccb->cmd[4] = (unsigned char)pccb->datalen; 140 pccb->cmd[5] = 0; 141 pccb->cmdlen = 6; 142 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ 143 } 144 145 #ifdef CONFIG_BLK 146 static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt, 147 void *buffer) 148 #else 149 static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr, 150 lbaint_t blkcnt, void *buffer) 151 #endif 152 { 153 #ifdef CONFIG_BLK 154 struct blk_desc *block_dev = dev_get_uclass_platdata(dev); 155 struct udevice *bdev = dev->parent; 156 #else 157 struct udevice *bdev = NULL; 158 #endif 159 lbaint_t start, blks; 160 uintptr_t buf_addr; 161 unsigned short smallblks = 0; 162 struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb; 163 164 /* Setup device */ 165 pccb->target = block_dev->target; 166 pccb->lun = block_dev->lun; 167 buf_addr = (unsigned long)buffer; 168 start = blknr; 169 blks = blkcnt; 170 debug("\nscsi_read: dev %d startblk " LBAF 171 ", blccnt " LBAF " buffer %lx\n", 172 block_dev->devnum, start, blks, (unsigned long)buffer); 173 do { 174 pccb->pdata = (unsigned char *)buf_addr; 175 #ifdef CONFIG_SYS_64BIT_LBA 176 if (start > SCSI_LBA48_READ) { 177 unsigned long blocks; 178 blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK); 179 pccb->datalen = block_dev->blksz * blocks; 180 scsi_setup_read16(pccb, start, blocks); 181 start += blocks; 182 blks -= blocks; 183 } else 184 #endif 185 if (blks > SCSI_MAX_READ_BLK) { 186 pccb->datalen = block_dev->blksz * 187 SCSI_MAX_READ_BLK; 188 smallblks = SCSI_MAX_READ_BLK; 189 scsi_setup_read_ext(pccb, start, smallblks); 190 start += SCSI_MAX_READ_BLK; 191 blks -= SCSI_MAX_READ_BLK; 192 } else { 193 pccb->datalen = block_dev->blksz * blks; 194 smallblks = (unsigned short)blks; 195 scsi_setup_read_ext(pccb, start, smallblks); 196 start += blks; 197 blks = 0; 198 } 199 debug("scsi_read_ext: startblk " LBAF 200 ", blccnt %x buffer %" PRIXPTR "\n", 201 start, smallblks, buf_addr); 202 if (scsi_exec(bdev, pccb)) { 203 scsi_print_error(pccb); 204 blkcnt -= blks; 205 break; 206 } 207 buf_addr += pccb->datalen; 208 } while (blks != 0); 209 debug("scsi_read_ext: end startblk " LBAF 210 ", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr); 211 return blkcnt; 212 } 213 214 /******************************************************************************* 215 * scsi_write 216 */ 217 218 /* Almost the maximum amount of the scsi_ext command.. */ 219 #define SCSI_MAX_WRITE_BLK 0xFFFF 220 221 #ifdef CONFIG_BLK 222 static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt, 223 const void *buffer) 224 #else 225 static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr, 226 lbaint_t blkcnt, const void *buffer) 227 #endif 228 { 229 #ifdef CONFIG_BLK 230 struct blk_desc *block_dev = dev_get_uclass_platdata(dev); 231 struct udevice *bdev = dev->parent; 232 #else 233 struct udevice *bdev = NULL; 234 #endif 235 lbaint_t start, blks; 236 uintptr_t buf_addr; 237 unsigned short smallblks; 238 struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb; 239 240 /* Setup device */ 241 pccb->target = block_dev->target; 242 pccb->lun = block_dev->lun; 243 buf_addr = (unsigned long)buffer; 244 start = blknr; 245 blks = blkcnt; 246 debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n", 247 __func__, block_dev->devnum, start, blks, (unsigned long)buffer); 248 do { 249 pccb->pdata = (unsigned char *)buf_addr; 250 if (blks > SCSI_MAX_WRITE_BLK) { 251 pccb->datalen = (block_dev->blksz * 252 SCSI_MAX_WRITE_BLK); 253 smallblks = SCSI_MAX_WRITE_BLK; 254 scsi_setup_write_ext(pccb, start, smallblks); 255 start += SCSI_MAX_WRITE_BLK; 256 blks -= SCSI_MAX_WRITE_BLK; 257 } else { 258 pccb->datalen = block_dev->blksz * blks; 259 smallblks = (unsigned short)blks; 260 scsi_setup_write_ext(pccb, start, smallblks); 261 start += blks; 262 blks = 0; 263 } 264 debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n", 265 __func__, start, smallblks, buf_addr); 266 if (scsi_exec(bdev, pccb)) { 267 scsi_print_error(pccb); 268 blkcnt -= blks; 269 break; 270 } 271 buf_addr += pccb->datalen; 272 } while (blks != 0); 273 debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n", 274 __func__, start, smallblks, buf_addr); 275 return blkcnt; 276 } 277 278 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT) && \ 279 !defined(CONFIG_DM_SCSI) 280 void scsi_init(void) 281 { 282 int busdevfunc = -1; 283 int i; 284 /* 285 * Find a device from the list, this driver will support a single 286 * controller. 287 */ 288 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) { 289 /* get PCI Device ID */ 290 #ifdef CONFIG_DM_PCI 291 struct udevice *dev; 292 int ret; 293 294 ret = dm_pci_find_device(scsi_device_list[i].vendor, 295 scsi_device_list[i].device, 0, &dev); 296 if (!ret) { 297 busdevfunc = dm_pci_get_bdf(dev); 298 break; 299 } 300 #else 301 busdevfunc = pci_find_device(scsi_device_list[i].vendor, 302 scsi_device_list[i].device, 303 0); 304 #endif 305 if (busdevfunc != -1) 306 break; 307 } 308 309 if (busdevfunc == -1) { 310 printf("Error: SCSI Controller(s) "); 311 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) { 312 printf("%04X:%04X ", 313 scsi_device_list[i].vendor, 314 scsi_device_list[i].device); 315 } 316 printf("not found\n"); 317 return; 318 } 319 #ifdef DEBUG 320 else { 321 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n", 322 scsi_device_list[i].vendor, 323 scsi_device_list[i].device, 324 (busdevfunc >> 16) & 0xFF, 325 (busdevfunc >> 11) & 0x1F, 326 (busdevfunc >> 8) & 0x7); 327 } 328 #endif 329 bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci"); 330 scsi_low_level_init(busdevfunc); 331 scsi_scan(true); 332 bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI); 333 } 334 #endif 335 336 /* copy src to dest, skipping leading and trailing blanks 337 * and null terminate the string 338 */ 339 static void scsi_ident_cpy(unsigned char *dest, unsigned char *src, 340 unsigned int len) 341 { 342 int start, end; 343 344 start = 0; 345 while (start < len) { 346 if (src[start] != ' ') 347 break; 348 start++; 349 } 350 end = len-1; 351 while (end > start) { 352 if (src[end] != ' ') 353 break; 354 end--; 355 } 356 for (; start <= end; start++) 357 *dest ++= src[start]; 358 *dest = '\0'; 359 } 360 361 static int scsi_read_capacity(struct udevice *dev, struct scsi_cmd *pccb, 362 lbaint_t *capacity, unsigned long *blksz) 363 { 364 *capacity = 0; 365 366 memset(pccb->cmd, '\0', sizeof(pccb->cmd)); 367 pccb->cmd[0] = SCSI_RD_CAPAC10; 368 pccb->cmd[1] = pccb->lun << 5; 369 pccb->cmdlen = 10; 370 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ 371 372 pccb->datalen = 8; 373 if (scsi_exec(dev, pccb)) 374 return 1; 375 376 *capacity = ((lbaint_t)pccb->pdata[0] << 24) | 377 ((lbaint_t)pccb->pdata[1] << 16) | 378 ((lbaint_t)pccb->pdata[2] << 8) | 379 ((lbaint_t)pccb->pdata[3]); 380 381 if (*capacity != 0xffffffff) { 382 /* Read capacity (10) was sufficient for this drive. */ 383 *blksz = ((unsigned long)pccb->pdata[4] << 24) | 384 ((unsigned long)pccb->pdata[5] << 16) | 385 ((unsigned long)pccb->pdata[6] << 8) | 386 ((unsigned long)pccb->pdata[7]); 387 return 0; 388 } 389 390 /* Read capacity (10) was insufficient. Use read capacity (16). */ 391 memset(pccb->cmd, '\0', sizeof(pccb->cmd)); 392 pccb->cmd[0] = SCSI_RD_CAPAC16; 393 pccb->cmd[1] = 0x10; 394 pccb->cmdlen = 16; 395 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ 396 397 pccb->datalen = 16; 398 if (scsi_exec(dev, pccb)) 399 return 1; 400 401 *capacity = ((uint64_t)pccb->pdata[0] << 56) | 402 ((uint64_t)pccb->pdata[1] << 48) | 403 ((uint64_t)pccb->pdata[2] << 40) | 404 ((uint64_t)pccb->pdata[3] << 32) | 405 ((uint64_t)pccb->pdata[4] << 24) | 406 ((uint64_t)pccb->pdata[5] << 16) | 407 ((uint64_t)pccb->pdata[6] << 8) | 408 ((uint64_t)pccb->pdata[7]); 409 410 *blksz = ((uint64_t)pccb->pdata[8] << 56) | 411 ((uint64_t)pccb->pdata[9] << 48) | 412 ((uint64_t)pccb->pdata[10] << 40) | 413 ((uint64_t)pccb->pdata[11] << 32) | 414 ((uint64_t)pccb->pdata[12] << 24) | 415 ((uint64_t)pccb->pdata[13] << 16) | 416 ((uint64_t)pccb->pdata[14] << 8) | 417 ((uint64_t)pccb->pdata[15]); 418 419 return 0; 420 } 421 422 423 /* 424 * Some setup (fill-in) routines 425 */ 426 static void scsi_setup_test_unit_ready(struct scsi_cmd *pccb) 427 { 428 pccb->cmd[0] = SCSI_TST_U_RDY; 429 pccb->cmd[1] = pccb->lun << 5; 430 pccb->cmd[2] = 0; 431 pccb->cmd[3] = 0; 432 pccb->cmd[4] = 0; 433 pccb->cmd[5] = 0; 434 pccb->cmdlen = 6; 435 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ 436 } 437 438 /** 439 * scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties 440 * 441 * @dev_desc: Block device description pointer 442 */ 443 static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc) 444 { 445 dev_desc->target = 0xff; 446 dev_desc->lun = 0xff; 447 dev_desc->log2blksz = 448 LOG2_INVALID(typeof(dev_desc->log2blksz)); 449 dev_desc->type = DEV_TYPE_UNKNOWN; 450 dev_desc->vendor[0] = 0; 451 dev_desc->product[0] = 0; 452 dev_desc->revision[0] = 0; 453 dev_desc->removable = false; 454 #ifndef CONFIG_BLK 455 dev_desc->block_read = scsi_read; 456 dev_desc->block_write = scsi_write; 457 #endif 458 } 459 460 #if !defined(CONFIG_DM_SCSI) 461 /** 462 * scsi_init_dev_desc - initialize all SCSI specific blk_desc properties 463 * 464 * @dev_desc: Block device description pointer 465 * @devnum: Device number 466 */ 467 static void scsi_init_dev_desc(struct blk_desc *dev_desc, int devnum) 468 { 469 dev_desc->lba = 0; 470 dev_desc->blksz = 0; 471 dev_desc->if_type = IF_TYPE_SCSI; 472 dev_desc->devnum = devnum; 473 dev_desc->part_type = PART_TYPE_UNKNOWN; 474 475 scsi_init_dev_desc_priv(dev_desc); 476 } 477 #endif 478 479 /** 480 * scsi_detect_dev - Detect scsi device 481 * 482 * @target: target id 483 * @lun: target lun 484 * @dev_desc: block device description 485 * 486 * The scsi_detect_dev detects and fills a dev_desc structure when the device is 487 * detected. 488 * 489 * Return: 0 on success, error value otherwise 490 */ 491 static int scsi_detect_dev(struct udevice *dev, int target, int lun, 492 struct blk_desc *dev_desc) 493 { 494 unsigned char perq, modi; 495 lbaint_t capacity; 496 unsigned long blksz; 497 struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb; 498 499 pccb->target = target; 500 pccb->lun = lun; 501 pccb->pdata = (unsigned char *)&tempbuff; 502 pccb->datalen = 512; 503 scsi_setup_inquiry(pccb); 504 if (scsi_exec(dev, pccb)) { 505 if (pccb->contr_stat == SCSI_SEL_TIME_OUT) { 506 /* 507 * selection timeout => assuming no 508 * device present 509 */ 510 debug("Selection timeout ID %d\n", 511 pccb->target); 512 return -ETIMEDOUT; 513 } 514 scsi_print_error(pccb); 515 return -ENODEV; 516 } 517 perq = tempbuff[0]; 518 modi = tempbuff[1]; 519 if ((perq & 0x1f) == 0x1f) 520 return -ENODEV; /* skip unknown devices */ 521 if ((modi & 0x80) == 0x80) /* drive is removable */ 522 dev_desc->removable = true; 523 /* get info for this device */ 524 scsi_ident_cpy((unsigned char *)dev_desc->vendor, 525 &tempbuff[8], 8); 526 scsi_ident_cpy((unsigned char *)dev_desc->product, 527 &tempbuff[16], 16); 528 scsi_ident_cpy((unsigned char *)dev_desc->revision, 529 &tempbuff[32], 4); 530 dev_desc->target = pccb->target; 531 dev_desc->lun = pccb->lun; 532 533 pccb->datalen = 0; 534 scsi_setup_test_unit_ready(pccb); 535 if (scsi_exec(dev, pccb)) { 536 if (dev_desc->removable) { 537 dev_desc->type = perq; 538 goto removable; 539 } 540 scsi_print_error(pccb); 541 return -EINVAL; 542 } 543 if (scsi_read_capacity(dev, pccb, &capacity, &blksz)) { 544 scsi_print_error(pccb); 545 return -EINVAL; 546 } 547 dev_desc->lba = capacity; 548 dev_desc->blksz = blksz; 549 dev_desc->log2blksz = LOG2(dev_desc->blksz); 550 dev_desc->type = perq; 551 removable: 552 return 0; 553 } 554 555 /* 556 * (re)-scan the scsi bus and reports scsi device info 557 * to the user if mode = 1 558 */ 559 #if defined(CONFIG_DM_SCSI) 560 static int do_scsi_scan_one(struct udevice *dev, int id, int lun, bool verbose) 561 { 562 int ret; 563 struct udevice *bdev; 564 struct blk_desc bd; 565 struct blk_desc *bdesc; 566 char str[10]; 567 568 /* 569 * detect the scsi driver to get information about its geometry (block 570 * size, number of blocks) and other parameters (ids, type, ...) 571 */ 572 scsi_init_dev_desc_priv(&bd); 573 if (scsi_detect_dev(dev, id, lun, &bd)) 574 return -ENODEV; 575 576 /* 577 * Create only one block device and do detection 578 * to make sure that there won't be a lot of 579 * block devices created 580 */ 581 snprintf(str, sizeof(str), "id%dlun%d", id, lun); 582 ret = blk_create_devicef(dev, "scsi_blk", str, IF_TYPE_SCSI, -1, 583 bd.blksz, bd.blksz * bd.lba, &bdev); 584 if (ret) { 585 debug("Can't create device\n"); 586 return ret; 587 } 588 589 bdesc = dev_get_uclass_platdata(bdev); 590 bdesc->target = id; 591 bdesc->lun = lun; 592 bdesc->removable = bd.removable; 593 bdesc->type = bd.type; 594 memcpy(&bdesc->vendor, &bd.vendor, sizeof(bd.vendor)); 595 memcpy(&bdesc->product, &bd.product, sizeof(bd.product)); 596 memcpy(&bdesc->revision, &bd.revision, sizeof(bd.revision)); 597 part_init(bdesc); 598 599 if (verbose) { 600 printf(" Device %d: ", 0); 601 dev_print(bdesc); 602 } 603 return 0; 604 } 605 606 int scsi_scan_dev(struct udevice *dev, bool verbose) 607 { 608 struct scsi_platdata *uc_plat; /* scsi controller platdata */ 609 int ret; 610 int i; 611 int lun; 612 613 /* probe SCSI controller driver */ 614 ret = device_probe(dev); 615 if (ret) 616 return ret; 617 618 /* Get controller platdata */ 619 uc_plat = dev_get_uclass_platdata(dev); 620 621 for (i = 0; i < uc_plat->max_id; i++) 622 for (lun = 0; lun < uc_plat->max_lun; lun++) 623 do_scsi_scan_one(dev, i, lun, verbose); 624 625 return 0; 626 } 627 628 int scsi_scan(bool verbose) 629 { 630 struct uclass *uc; 631 struct udevice *dev; /* SCSI controller */ 632 int ret; 633 634 if (verbose) 635 printf("scanning bus for devices...\n"); 636 637 blk_unbind_all(IF_TYPE_SCSI); 638 639 ret = uclass_get(UCLASS_SCSI, &uc); 640 if (ret) 641 return ret; 642 643 uclass_foreach_dev(dev, uc) { 644 ret = scsi_scan_dev(dev, verbose); 645 if (ret) 646 return ret; 647 } 648 649 return 0; 650 } 651 #else 652 int scsi_scan(bool verbose) 653 { 654 unsigned char i, lun; 655 int ret; 656 657 if (verbose) 658 printf("scanning bus for devices...\n"); 659 for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++) 660 scsi_init_dev_desc(&scsi_dev_desc[i], i); 661 662 scsi_max_devs = 0; 663 for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) { 664 for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) { 665 ret = scsi_detect_dev(NULL, i, lun, 666 &scsi_dev_desc[scsi_max_devs]); 667 if (ret) 668 continue; 669 part_init(&scsi_dev_desc[scsi_max_devs]); 670 671 if (verbose) { 672 printf(" Device %d: ", 0); 673 dev_print(&scsi_dev_desc[scsi_max_devs]); 674 } 675 scsi_max_devs++; 676 } /* next LUN */ 677 } 678 if (scsi_max_devs > 0) 679 scsi_curr_dev = 0; 680 else 681 scsi_curr_dev = -1; 682 683 printf("Found %d device(s).\n", scsi_max_devs); 684 #ifndef CONFIG_SPL_BUILD 685 setenv_ulong("scsidevs", scsi_max_devs); 686 #endif 687 return 0; 688 } 689 #endif 690 691 #ifdef CONFIG_BLK 692 static const struct blk_ops scsi_blk_ops = { 693 .read = scsi_read, 694 .write = scsi_write, 695 }; 696 697 U_BOOT_DRIVER(scsi_blk) = { 698 .name = "scsi_blk", 699 .id = UCLASS_BLK, 700 .ops = &scsi_blk_ops, 701 }; 702 #else 703 U_BOOT_LEGACY_BLK(scsi) = { 704 .if_typename = "scsi", 705 .if_type = IF_TYPE_SCSI, 706 .max_devs = CONFIG_SYS_SCSI_MAX_DEVICE, 707 .desc = scsi_dev_desc, 708 }; 709 #endif 710