common/cmd_scsi.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  *
  23  *
  24  *
  25  */
  26
  27 /*
  28  * SCSI support.
  29  */
  30 #include <common.h>
  31 #include <command.h>
  32 #include <asm/processor.h>
  33 #include <scsi.h>
  34 #include <image.h>
  35 #include <pci.h>
  36
  37 #ifdef CONFIG_SCSI_DEV_LIST
  38 #define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
  39 #else
  40 #ifdef CONFIG_SCSI_SYM53C8XX
  41 #define SCSI_VEND_ID    0x1000
  42 #ifndef CONFIG_SCSI_DEV_ID
  43 #define SCSI_DEV_ID             0x0001
  44 #else
  45 #define SCSI_DEV_ID             CONFIG_SCSI_DEV_ID
  46 #endif
  47 #elif defined CONFIG_SATA_ULI5288
  48
  49 #define SCSI_VEND_ID 0x10b9
  50 #define SCSI_DEV_ID  0x5288
  51
  52 #elif !defined(CONFIG_SCSI_AHCI_PLAT)
  53 #error no scsi device defined
  54 #endif
  55 #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
  56 #endif
  57
  58 #ifdef CONFIG_PCI
  59 const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
  60 #endif
  61 static ccb tempccb;     /* temporary scsi command buffer */
  62
  63 static unsigned char tempbuff[512]; /* temporary data buffer */
  64
  65 static int scsi_max_devs; /* number of highest available scsi device */
  66
  67 static int scsi_curr_dev; /* current device */
  68
  69 static block_dev_desc_t scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
  70
  71 /********************************************************************************
  72  *  forward declerations of some Setup Routines
  73  */
  74 void scsi_setup_test_unit_ready(ccb * pccb);
  75 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
  76 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
  77 static void scsi_setup_write_ext(ccb *pccb, unsigned long start,
  78                           unsigned short blocks);
  79 void scsi_setup_inquiry(ccb * pccb);
  80 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
  81
  82
  83 static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity,
  84                               unsigned long *blksz);
  85 static ulong scsi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer);
  86 static ulong scsi_write(int device, ulong blknr,
  87                         lbaint_t blkcnt, const void *buffer);
  88
  89
  90 /*********************************************************************************
  91  * (re)-scan the scsi bus and reports scsi device info
  92  * to the user if mode = 1
  93  */
  94 void scsi_scan(int mode)
  95 {
  96         unsigned char i,perq,modi,lun;
  97         lbaint_t capacity;
  98         unsigned long blksz;
  99         ccb* pccb=(ccb *)&tempccb;
 100
 101         if(mode==1) {
 102                 printf("scanning bus for devices...\n");
 103         }
 104         for(i=0;i<CONFIG_SYS_SCSI_MAX_DEVICE;i++) {
 105                 scsi_dev_desc[i].target=0xff;
 106                 scsi_dev_desc[i].lun=0xff;
 107                 scsi_dev_desc[i].lba=0;
 108                 scsi_dev_desc[i].blksz=0;
 109                 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
 110                 scsi_dev_desc[i].vendor[0]=0;
 111                 scsi_dev_desc[i].product[0]=0;
 112                 scsi_dev_desc[i].revision[0]=0;
 113                 scsi_dev_desc[i].removable = false;
 114                 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
 115                 scsi_dev_desc[i].dev=i;
 116                 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 117                 scsi_dev_desc[i].block_read=scsi_read;
 118                 scsi_dev_desc[i].block_write = scsi_write;
 119         }
 120         scsi_max_devs=0;
 121         for(i=0;i<CONFIG_SYS_SCSI_MAX_SCSI_ID;i++) {
 122                 pccb->target=i;
 123                 for(lun=0;lun<CONFIG_SYS_SCSI_MAX_LUN;lun++) {
 124                         pccb->lun=lun;
 125                         pccb->pdata=(unsigned char *)&tempbuff;
 126                         pccb->datalen=512;
 127                         scsi_setup_inquiry(pccb);
 128                         if (scsi_exec(pccb) != true) {
 129                                 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
 130                                         debug ("Selection timeout ID %d\n",pccb->target);
 131                                         continue; /* selection timeout => assuming no device present */
 132                                 }
 133                                 scsi_print_error(pccb);
 134                                 continue;
 135                         }
 136                         perq=tempbuff[0];
 137                         modi=tempbuff[1];
 138                         if((perq & 0x1f)==0x1f) {
 139                                 continue; /* skip unknown devices */
 140                         }
 141                         if((modi&0x80)==0x80) /* drive is removable */
 142                                 scsi_dev_desc[scsi_max_devs].removable=true;
 143                         /* get info for this device */
 144                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
 145                                        &tempbuff[8], 8);
 146                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
 147                                        &tempbuff[16], 16);
 148                         scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
 149                                        &tempbuff[32], 4);
 150                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
 151                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
 152
 153                         pccb->datalen=0;
 154                         scsi_setup_test_unit_ready(pccb);
 155                         if (scsi_exec(pccb) != true) {
 156                                 if (scsi_dev_desc[scsi_max_devs].removable == true) {
 157                                         scsi_dev_desc[scsi_max_devs].type=perq;
 158                                         goto removable;
 159                                 }
 160                                 scsi_print_error(pccb);
 161                                 continue;
 162                         }
 163                         if (scsi_read_capacity(pccb, &capacity, &blksz)) {
 164                                 scsi_print_error(pccb);
 165                                 continue;
 166                         }
 167                         scsi_dev_desc[scsi_max_devs].lba=capacity;
 168                         scsi_dev_desc[scsi_max_devs].blksz=blksz;
 169                         scsi_dev_desc[scsi_max_devs].type=perq;
 170                         init_part(&scsi_dev_desc[scsi_max_devs]);
 171 removable:
 172                         if(mode==1) {
 173                                 printf ("  Device %d: ", scsi_max_devs);
 174                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
 175                         } /* if mode */
 176                         scsi_max_devs++;
 177                 } /* next LUN */
 178         }
 179         if(scsi_max_devs>0)
 180                 scsi_curr_dev=0;
 181         else
 182                 scsi_curr_dev = -1;
 183
 184         printf("Found %d device(s).\n", scsi_max_devs);
 185         setenv_ulong("scsidevs", scsi_max_devs);
 186 }
 187
 188 int scsi_get_disk_count(void)
 189 {
 190         return scsi_max_devs;
 191 }
 192
 193 #ifdef CONFIG_PCI
 194 void scsi_init(void)
 195 {
 196         int busdevfunc;
 197         int i;
 198         /*
 199          * Find a device from the list, this driver will support a single
 200          * controller.
 201          */
 202         for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
 203                 /* get PCI Device ID */
 204                 busdevfunc = pci_find_device(scsi_device_list[i].vendor,
 205                                              scsi_device_list[i].device,
 206                                              0);
 207                 if (busdevfunc != -1)
 208                         break;
 209         }
 210
 211         if (busdevfunc == -1) {
 212                 printf("Error: SCSI Controller(s) ");
 213                 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
 214                         printf("%04X:%04X ",
 215                                scsi_device_list[i].vendor,
 216                                scsi_device_list[i].device);
 217                 }
 218                 printf("not found\n");
 219                 return;
 220         }
 221 #ifdef DEBUG
 222         else {
 223                 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
 224                        scsi_device_list[i].vendor,
 225                        scsi_device_list[i].device,
 226                        (busdevfunc >> 16) & 0xFF,
 227                        (busdevfunc >> 11) & 0x1F,
 228                        (busdevfunc >> 8) & 0x7);
 229         }
 230 #endif
 231         scsi_low_level_init(busdevfunc);
 232         scsi_scan(1);
 233 }
 234 #endif
 235
 236 #ifdef CONFIG_PARTITIONS
 237 block_dev_desc_t * scsi_get_dev(int dev)
 238 {
 239         return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
 240 }
 241 #endif
 242
 243 /******************************************************************************
 244  * scsi boot command intepreter. Derived from diskboot
 245  */
 246 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 247 {
 248         return common_diskboot(cmdtp, "scsi", argc, argv);
 249 }
 250
 251 /*********************************************************************************
 252  * scsi command intepreter
 253  */
 254 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 255 {
 256         switch (argc) {
 257         case 0:
 258         case 1:
 259                 return CMD_RET_USAGE;
 260
 261         case 2:
 262                         if (strncmp(argv[1],"res",3) == 0) {
 263                                 printf("\nReset SCSI\n");
 264                                 scsi_bus_reset();
 265                                 scsi_scan(1);
 266                                 return 0;
 267                         }
 268                         if (strncmp(argv[1],"inf",3) == 0) {
 269                                 int i;
 270                                 for (i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; ++i) {
 271                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
 272                                                 continue; /* list only known devices */
 273                                         printf ("SCSI dev. %d:  ", i);
 274                                         dev_print(&scsi_dev_desc[i]);
 275                                 }
 276                                 return 0;
 277                         }
 278                         if (strncmp(argv[1],"dev",3) == 0) {
 279                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CONFIG_SYS_SCSI_MAX_DEVICE)) {
 280                                         printf("\nno SCSI devices available\n");
 281                                         return 1;
 282                                 }
 283                                 printf ("\n    Device %d: ", scsi_curr_dev);
 284                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
 285                                 return 0;
 286                         }
 287                         if (strncmp(argv[1],"scan",4) == 0) {
 288                                 scsi_scan(1);
 289                                 return 0;
 290                         }
 291                         if (strncmp(argv[1],"part",4) == 0) {
 292                                 int dev, ok;
 293                                 for (ok=0, dev=0; dev<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
 294                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
 295                                                 ok++;
 296                                                 if (dev)
 297                                                         printf("\n");
 298                                                 debug ("print_part of %x\n",dev);
 299                                                         print_part(&scsi_dev_desc[dev]);
 300                                         }
 301                                 }
 302                                 if (!ok)
 303                                         printf("\nno SCSI devices available\n");
 304                                 return 1;
 305                         }
 306                         return CMD_RET_USAGE;
 307         case 3:
 308                         if (strncmp(argv[1],"dev",3) == 0) {
 309                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 310                                 printf ("\nSCSI device %d: ", dev);
 311                                 if (dev >= CONFIG_SYS_SCSI_MAX_DEVICE) {
 312                                         printf("unknown device\n");
 313                                         return 1;
 314                                 }
 315                                 printf ("\n    Device %d: ", dev);
 316                                 dev_print(&scsi_dev_desc[dev]);
 317                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 318                                         return 1;
 319                                 }
 320                                 scsi_curr_dev = dev;
 321                                 printf("... is now current device\n");
 322                                 return 0;
 323                         }
 324                         if (strncmp(argv[1],"part",4) == 0) {
 325                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 326                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
 327                                         print_part(&scsi_dev_desc[dev]);
 328                                 }
 329                                 else {
 330                                         printf ("\nSCSI device %d not available\n", dev);
 331                                 }
 332                                 return 1;
 333                         }
 334                         return CMD_RET_USAGE;
 335     default:
 336                         /* at least 4 args */
 337                         if (strcmp(argv[1],"read") == 0) {
 338                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 339                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
 340                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
 341                                 ulong n;
 342                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
 343                                                 scsi_curr_dev, blk, cnt);
 344                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
 345                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
 346                                 return 0;
 347                         } else if (strcmp(argv[1], "write") == 0) {
 348                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 349                                 ulong blk = simple_strtoul(argv[3], NULL, 16);
 350                                 ulong cnt = simple_strtoul(argv[4], NULL, 16);
 351                                 ulong n;
 352                                 printf("\nSCSI write: device %d block # %ld, "
 353                                        "count %ld ... ",
 354                                        scsi_curr_dev, blk, cnt);
 355                                 n = scsi_write(scsi_curr_dev, blk, cnt,
 356                                                (ulong *)addr);
 357                                 printf("%ld blocks written: %s\n", n,
 358                                        (n == cnt) ? "OK" : "ERROR");
 359                                 return 0;
 360                         }
 361         } /* switch */
 362         return CMD_RET_USAGE;
 363 }
 364
 365 /****************************************************************************************
 366  * scsi_read
 367  */
 368
 369 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
 370
 371 static ulong scsi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
 372 {
 373         lbaint_t start, blks;
 374         uintptr_t buf_addr;
 375         unsigned short smallblks;
 376         ccb* pccb=(ccb *)&tempccb;
 377         device&=0xff;
 378         /* Setup  device
 379          */
 380         pccb->target=scsi_dev_desc[device].target;
 381         pccb->lun=scsi_dev_desc[device].lun;
 382         buf_addr=(unsigned long)buffer;
 383         start=blknr;
 384         blks=blkcnt;
 385         debug("\nscsi_read: dev %d startblk " LBAF
 386               ", blccnt " LBAF " buffer %lx\n",
 387               device, start, blks, (unsigned long)buffer);
 388         do {
 389                 pccb->pdata=(unsigned char *)buf_addr;
 390                 if(blks>SCSI_MAX_READ_BLK) {
 391                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
 392                         smallblks=SCSI_MAX_READ_BLK;
 393                         scsi_setup_read_ext(pccb,start,smallblks);
 394                         start+=SCSI_MAX_READ_BLK;
 395                         blks-=SCSI_MAX_READ_BLK;
 396                 }
 397                 else {
 398                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
 399                         smallblks=(unsigned short) blks;
 400                         scsi_setup_read_ext(pccb,start,smallblks);
 401                         start+=blks;
 402                         blks=0;
 403                 }
 404                 debug("scsi_read_ext: startblk " LBAF
 405                       ", blccnt %x buffer %lx\n",
 406                       start, smallblks, buf_addr);
 407                 if (scsi_exec(pccb) != true) {
 408                         scsi_print_error(pccb);
 409                         blkcnt-=blks;
 410                         break;
 411                 }
 412                 buf_addr+=pccb->datalen;
 413         } while(blks!=0);
 414         debug("scsi_read_ext: end startblk " LBAF
 415               ", blccnt %x buffer %lx\n", start, smallblks, buf_addr);
 416         return(blkcnt);
 417 }
 418
 419 /*******************************************************************************
 420  * scsi_write
 421  */
 422
 423 /* Almost the maximum amount of the scsi_ext command.. */
 424 #define SCSI_MAX_WRITE_BLK 0xFFFF
 425
 426 static ulong scsi_write(int device, ulong blknr,
 427                         lbaint_t blkcnt, const void *buffer)
 428 {
 429         lbaint_t start, blks;
 430         uintptr_t buf_addr;
 431         unsigned short smallblks;
 432         ccb* pccb = (ccb *)&tempccb;
 433         device &= 0xff;
 434         /* Setup  device
 435          */
 436         pccb->target = scsi_dev_desc[device].target;
 437         pccb->lun = scsi_dev_desc[device].lun;
 438         buf_addr = (unsigned long)buffer;
 439         start = blknr;
 440         blks = blkcnt;
 441         debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
 442               __func__, device, start, blks, (unsigned long)buffer);
 443         do {
 444                 pccb->pdata = (unsigned char *)buf_addr;
 445                 if (blks > SCSI_MAX_WRITE_BLK) {
 446                         pccb->datalen = (scsi_dev_desc[device].blksz *
 447                                          SCSI_MAX_WRITE_BLK);
 448                         smallblks = SCSI_MAX_WRITE_BLK;
 449                         scsi_setup_write_ext(pccb, start, smallblks);
 450                         start += SCSI_MAX_WRITE_BLK;
 451                         blks -= SCSI_MAX_WRITE_BLK;
 452                 } else {
 453                         pccb->datalen = scsi_dev_desc[device].blksz * blks;
 454                         smallblks = (unsigned short)blks;
 455                         scsi_setup_write_ext(pccb, start, smallblks);
 456                         start += blks;
 457                         blks = 0;
 458                 }
 459                 debug("%s: startblk " LBAF ", blccnt %x buffer %lx\n",
 460                       __func__, start, smallblks, buf_addr);
 461                 if (scsi_exec(pccb) != true) {
 462                         scsi_print_error(pccb);
 463                         blkcnt -= blks;
 464                         break;
 465                 }
 466                 buf_addr += pccb->datalen;
 467         } while (blks != 0);
 468         debug("%s: end startblk " LBAF ", blccnt %x buffer %lx\n",
 469               __func__, start, smallblks, buf_addr);
 470         return blkcnt;
 471 }
 472
 473 /* copy src to dest, skipping leading and trailing blanks
 474  * and null terminate the string
 475  */
 476 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
 477 {
 478         int start,end;
 479
 480         start=0;
 481         while(start<len) {
 482                 if(src[start]!=' ')
 483                         break;
 484                 start++;
 485         }
 486         end=len-1;
 487         while(end>start) {
 488                 if(src[end]!=' ')
 489                         break;
 490                 end--;
 491         }
 492         for( ; start<=end; start++) {
 493                 *dest++=src[start];
 494         }
 495         *dest='\0';
 496 }
 497
 498
 499 /* Trim trailing blanks, and NUL-terminate string
 500  */
 501 void scsi_trim_trail (unsigned char *str, unsigned int len)
 502 {
 503         unsigned char *p = str + len - 1;
 504
 505         while (len-- > 0) {
 506                 *p-- = '\0';
 507                 if (*p != ' ') {
 508                         return;
 509                 }
 510         }
 511 }
 512
 513 int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
 514 {
 515         *capacity = 0;
 516
 517         memset(pccb->cmd, 0, sizeof(pccb->cmd));
 518         pccb->cmd[0] = SCSI_RD_CAPAC10;
 519         pccb->cmd[1] = pccb->lun << 5;
 520         pccb->cmdlen = 10;
 521         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
 522
 523         pccb->datalen = 8;
 524         if (scsi_exec(pccb) != true)
 525                 return 1;
 526
 527         *capacity = ((lbaint_t)pccb->pdata[0] << 24) |
 528                     ((lbaint_t)pccb->pdata[1] << 16) |
 529                     ((lbaint_t)pccb->pdata[2] << 8)  |
 530                     ((lbaint_t)pccb->pdata[3]);
 531
 532         if (*capacity != 0xffffffff) {
 533                 /* Read capacity (10) was sufficient for this drive. */
 534                 *blksz = ((unsigned long)pccb->pdata[4] << 24) |
 535                          ((unsigned long)pccb->pdata[5] << 16) |
 536                          ((unsigned long)pccb->pdata[6] << 8)  |
 537                          ((unsigned long)pccb->pdata[7]);
 538                 return 0;
 539         }
 540
 541         /* Read capacity (10) was insufficient. Use read capacity (16). */
 542
 543         memset(pccb->cmd, 0, sizeof(pccb->cmd));
 544         pccb->cmd[0] = SCSI_RD_CAPAC16;
 545         pccb->cmd[1] = 0x10;
 546         pccb->cmdlen = 16;
 547         pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
 548
 549         pccb->datalen = 16;
 550         if (scsi_exec(pccb) != true)
 551                 return 1;
 552
 553         *capacity = ((uint64_t)pccb->pdata[0] << 56) |
 554                     ((uint64_t)pccb->pdata[1] << 48) |
 555                     ((uint64_t)pccb->pdata[2] << 40) |
 556                     ((uint64_t)pccb->pdata[3] << 32) |
 557                     ((uint64_t)pccb->pdata[4] << 24) |
 558                     ((uint64_t)pccb->pdata[5] << 16) |
 559                     ((uint64_t)pccb->pdata[6] << 8)  |
 560                     ((uint64_t)pccb->pdata[7]);
 561
 562         *blksz = ((uint64_t)pccb->pdata[8]  << 56) |
 563                  ((uint64_t)pccb->pdata[9]  << 48) |
 564                  ((uint64_t)pccb->pdata[10] << 40) |
 565                  ((uint64_t)pccb->pdata[11] << 32) |
 566                  ((uint64_t)pccb->pdata[12] << 24) |
 567                  ((uint64_t)pccb->pdata[13] << 16) |
 568                  ((uint64_t)pccb->pdata[14] << 8)  |
 569                  ((uint64_t)pccb->pdata[15]);
 570
 571         return 0;
 572 }
 573
 574
 575 /************************************************************************************
 576  * Some setup (fill-in) routines
 577  */
 578 void scsi_setup_test_unit_ready(ccb * pccb)
 579 {
 580         pccb->cmd[0]=SCSI_TST_U_RDY;
 581         pccb->cmd[1]=pccb->lun<<5;
 582         pccb->cmd[2]=0;
 583         pccb->cmd[3]=0;
 584         pccb->cmd[4]=0;
 585         pccb->cmd[5]=0;
 586         pccb->cmdlen=6;
 587         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 588 }
 589
 590 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
 591 {
 592         pccb->cmd[0]=SCSI_READ10;
 593         pccb->cmd[1]=pccb->lun<<5;
 594         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
 595         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
 596         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
 597         pccb->cmd[5]=((unsigned char) (start))&0xff;
 598         pccb->cmd[6]=0;
 599         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 600         pccb->cmd[8]=(unsigned char) blocks & 0xff;
 601         pccb->cmd[6]=0;
 602         pccb->cmdlen=10;
 603         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 604         debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 605                 pccb->cmd[0],pccb->cmd[1],
 606                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
 607                 pccb->cmd[7],pccb->cmd[8]);
 608 }
 609
 610 void scsi_setup_write_ext(ccb *pccb, unsigned long start, unsigned short blocks)
 611 {
 612         pccb->cmd[0] = SCSI_WRITE10;
 613         pccb->cmd[1] = pccb->lun << 5;
 614         pccb->cmd[2] = ((unsigned char) (start>>24)) & 0xff;
 615         pccb->cmd[3] = ((unsigned char) (start>>16)) & 0xff;
 616         pccb->cmd[4] = ((unsigned char) (start>>8)) & 0xff;
 617         pccb->cmd[5] = ((unsigned char) (start)) & 0xff;
 618         pccb->cmd[6] = 0;
 619         pccb->cmd[7] = ((unsigned char) (blocks>>8)) & 0xff;
 620         pccb->cmd[8] = (unsigned char)blocks & 0xff;
 621         pccb->cmd[9] = 0;
 622         pccb->cmdlen = 10;
 623         pccb->msgout[0] = SCSI_IDENTIFY;  /* NOT USED */
 624         debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 625               __func__,
 626               pccb->cmd[0], pccb->cmd[1],
 627               pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
 628               pccb->cmd[7], pccb->cmd[8]);
 629 }
 630
 631 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
 632 {
 633         pccb->cmd[0]=SCSI_READ6;
 634         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
 635         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
 636         pccb->cmd[3]=((unsigned char) (start))&0xff;
 637         pccb->cmd[4]=(unsigned char) blocks & 0xff;
 638         pccb->cmd[5]=0;
 639         pccb->cmdlen=6;
 640         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 641         debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
 642                 pccb->cmd[0],pccb->cmd[1],
 643                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
 644 }
 645
 646
 647 void scsi_setup_inquiry(ccb * pccb)
 648 {
 649         pccb->cmd[0]=SCSI_INQUIRY;
 650         pccb->cmd[1]=pccb->lun<<5;
 651         pccb->cmd[2]=0;
 652         pccb->cmd[3]=0;
 653         if(pccb->datalen>255)
 654                 pccb->cmd[4]=255;
 655         else
 656                 pccb->cmd[4]=(unsigned char)pccb->datalen;
 657         pccb->cmd[5]=0;
 658         pccb->cmdlen=6;
 659         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 660 }
 661
 662
 663 U_BOOT_CMD(
 664         scsi, 5, 1, do_scsi,
 665         "SCSI sub-system",
 666         "reset - reset SCSI controller\n"
 667         "scsi info  - show available SCSI devices\n"
 668         "scsi scan  - (re-)scan SCSI bus\n"
 669         "scsi device [dev] - show or set current device\n"
 670         "scsi part [dev] - print partition table of one or all SCSI devices\n"
 671         "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
 672         "     to memory address `addr'\n"
 673         "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
 674         "     `blk#' from memory address `addr'"
 675 );
 676
 677 U_BOOT_CMD(
 678         scsiboot, 3, 1, do_scsiboot,
 679         "boot from SCSI device",
 680         "loadAddr dev:part"
 681 );