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