git.sur5r.net Git - u-boot/blob - drivers/scsi/scsi.c

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