git.sur5r.net Git - u-boot/blob - 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
  31 #include <common.h>
  32 #include <command.h>
  33 #include <asm/processor.h>
  34 #include <scsi.h>
  35 #include <image.h>
  36 #include <pci.h>
  37
  38
  39 #undef  SCSI_DEBUG
  40
  41 #ifdef  SCSI_DEBUG
  42 #define PRINTF(fmt,args...)     printf (fmt ,##args)
  43 #else
  44 #define PRINTF(fmt,args...)
  45 #endif
  46
  47 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
  48
  49 #ifdef CONFIG_SCSI_SYM53C8XX
  50 #define SCSI_VEND_ID    0x1000
  51 #ifndef CONFIG_SCSI_DEV_ID
  52 #define SCSI_DEV_ID             0x0001
  53 #else
  54 #define SCSI_DEV_ID             CONFIG_SCSI_DEV_ID
  55 #endif
  56 #else
  57 #error CONFIG_SCSI_SYM53C8XX must be defined
  58 #endif
  59
  60
  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[CFG_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_read_capacity(ccb * pccb);
  76 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
  77 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
  78 void scsi_setup_inquiry(ccb * pccb);
  79 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
  80
  81
  82 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer);
  83
  84
  85 /*********************************************************************************
  86  * (re)-scan the scsi bus and reports scsi device info
  87  * to the user if mode = 1
  88  */
  89 void scsi_scan(int mode)
  90 {
  91         unsigned char i,perq,modi,lun;
  92         unsigned long capacity,blksz;
  93         ccb* pccb=(ccb *)&tempccb;
  94
  95         if(mode==1) {
  96                 printf("scanning bus for devices...\n");
  97         }
  98         for(i=0;i<CFG_SCSI_MAX_DEVICE;i++) {
  99                 scsi_dev_desc[i].target=0xff;
 100                 scsi_dev_desc[i].lun=0xff;
 101                 scsi_dev_desc[i].lba=0;
 102                 scsi_dev_desc[i].blksz=0;
 103                 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
 104                 scsi_dev_desc[i].vendor[0]=0;
 105                 scsi_dev_desc[i].product[0]=0;
 106                 scsi_dev_desc[i].revision[0]=0;
 107                 scsi_dev_desc[i].removable=FALSE;
 108                 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
 109                 scsi_dev_desc[i].dev=i;
 110                 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 111                 scsi_dev_desc[i].block_read=scsi_read;
 112         }
 113         scsi_max_devs=0;
 114         for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
 115                 pccb->target=i;
 116                 for(lun=0;lun<CFG_SCSI_MAX_LUN;lun++) {
 117                         pccb->lun=lun;
 118                         pccb->pdata=(unsigned char *)&tempbuff;
 119                         pccb->datalen=512;
 120                         scsi_setup_inquiry(pccb);
 121                         if(scsi_exec(pccb)!=TRUE) {
 122                                 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
 123                                         PRINTF("Selection timeout ID %d\n",pccb->target);
 124                                         continue; /* selection timeout => assuming no device present */
 125                                 }
 126                                 scsi_print_error(pccb);
 127                                 continue;
 128                         }
 129                         perq=tempbuff[0];
 130                         modi=tempbuff[1];
 131                         if((perq & 0x1f)==0x1f) {
 132                                 continue; /* skip unknown devices */
 133                         }
 134                         if((modi&0x80)==0x80) /* drive is removable */
 135                                 scsi_dev_desc[scsi_max_devs].removable=TRUE;
 136                         /* get info for this device */
 137                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].vendor[0],&tempbuff[8],8);
 138                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].product[0],&tempbuff[16],16);
 139                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].revision[0],&tempbuff[32],4);
 140                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
 141                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
 142
 143                         pccb->datalen=0;
 144                         scsi_setup_test_unit_ready(pccb);
 145                         if(scsi_exec(pccb)!=TRUE) {
 146                                 if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
 147                                         scsi_dev_desc[scsi_max_devs].type=perq;
 148                                         goto removable;
 149                                 }
 150                                 scsi_print_error(pccb);
 151                                 continue;
 152                         }
 153                         pccb->datalen=8;
 154                         scsi_setup_read_capacity(pccb);
 155                         if(scsi_exec(pccb)!=TRUE) {
 156                                 scsi_print_error(pccb);
 157                                 continue;
 158                         }
 159                         capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
 160                                         ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
 161                         blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
 162                                 ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
 163                         scsi_dev_desc[scsi_max_devs].lba=capacity;
 164                         scsi_dev_desc[scsi_max_devs].blksz=blksz;
 165                         scsi_dev_desc[scsi_max_devs].type=perq;
 166                         init_part(&scsi_dev_desc[scsi_max_devs]);
 167 removable:
 168                         if(mode==1) {
 169                                 printf ("  Device %d: ", scsi_max_devs);
 170                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
 171                         } /* if mode */
 172                         scsi_max_devs++;
 173                 } /* next LUN */
 174         }
 175         if(scsi_max_devs>0)
 176                 scsi_curr_dev=0;
 177         else
 178                 scsi_curr_dev=-1;
 179 }
 180
 181
 182 void scsi_init(void)
 183 {
 184         int busdevfunc;
 185
 186         busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
 187         if(busdevfunc==-1) {
 188                 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
 189                 return;
 190         }
 191 #ifdef DEBUG
 192         else {
 193                 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",SCSI_VEND_ID,SCSI_DEV_ID,(busdevfunc>>16)&0xFF,(busdevfunc>>11)&0x1F,(busdevfunc>>8)&0x7);
 194         }
 195 #endif
 196         scsi_low_level_init(busdevfunc);
 197         scsi_scan(1);
 198 }
 199
 200 block_dev_desc_t * scsi_get_dev(int dev)
 201 {
 202         return((block_dev_desc_t *)&scsi_dev_desc[dev]);
 203 }
 204
 205
 206 /******************************************************************************
 207  * scsi boot command intepreter. Derived from diskboot
 208  */
 209 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 210 {
 211         char *boot_device = NULL;
 212         char *ep;
 213         int dev, part = 0;
 214         ulong cnt;
 215         ulong addr;
 216         disk_partition_t info;
 217         image_header_t *hdr;
 218         int rcode = 0;
 219
 220         switch (argc) {
 221         case 1:
 222                 addr = CFG_LOAD_ADDR;
 223                 boot_device = getenv ("bootdevice");
 224                 break;
 225         case 2:
 226                 addr = simple_strtoul(argv[1], NULL, 16);
 227                 boot_device = getenv ("bootdevice");
 228                 break;
 229         case 3:
 230                 addr = simple_strtoul(argv[1], NULL, 16);
 231                 boot_device = argv[2];
 232                 break;
 233         default:
 234                 printf ("Usage:\n%s\n", cmdtp->usage);
 235                 return 1;
 236         }
 237
 238         if (!boot_device) {
 239                 puts ("\n** No boot device **\n");
 240                 return 1;
 241         }
 242
 243         dev = simple_strtoul(boot_device, &ep, 16);
 244         printf("booting from dev %d\n",dev);
 245         if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 246                 printf ("\n** Device %d not available\n", dev);
 247                 return 1;
 248         }
 249
 250         if (*ep) {
 251                 if (*ep != ':') {
 252                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 253                         return 1;
 254                 }
 255                 part = simple_strtoul(++ep, NULL, 16);
 256         }
 257         if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
 258                 printf("error reading partinfo\n");
 259                 return 1;
 260         }
 261         if ((strncmp(info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
 262             (strncmp(info.type, BOOT_PART_COMP, sizeof(info.type)) != 0)) {
 263                 printf ("\n** Invalid partition type \"%.32s\""
 264                         " (expect \"" BOOT_PART_TYPE "\")\n",
 265                         info.type);
 266                 return 1;
 267         }
 268
 269         printf ("\nLoading from SCSI device %d, partition %d: "
 270                 "Name: %.32s  Type: %.32s\n",
 271                 dev, part, info.name, info.type);
 272
 273         PRINTF ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
 274                 info.start, info.size, info.blksz);
 275
 276         if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
 277                 printf ("** Read error on %d:%d\n", dev, part);
 278                 return 1;
 279         }
 280
 281         hdr = (image_header_t *)addr;
 282
 283         if (hdr->ih_magic == IH_MAGIC) {
 284
 285                 print_image_hdr (hdr);
 286                 cnt = (hdr->ih_size + sizeof(image_header_t));
 287                 cnt += info.blksz - 1;
 288                 cnt /= info.blksz;
 289                 cnt -= 1;
 290         } else {
 291                 printf("\n** Bad Magic Number **\n");
 292                 return 1;
 293         }
 294
 295         if (scsi_read (dev, info.start+1, cnt,
 296                       (ulong *)(addr+info.blksz)) != cnt) {
 297                 printf ("** Read error on %d:%d\n", dev, part);
 298                 return 1;
 299         }
 300         /* Loading ok, update default load address */
 301         load_addr = addr;
 302
 303         flush_cache (addr, (cnt+1)*info.blksz);
 304
 305         /* Check if we should attempt an auto-start */
 306         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
 307                 char *local_args[2];
 308                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 309                 local_args[0] = argv[0];
 310                 local_args[1] = NULL;
 311                 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
 312                 rcode = do_bootm (cmdtp, 0, 1, local_args);
 313         }
 314          return rcode;
 315 }
 316
 317 /*********************************************************************************
 318  * scsi command intepreter
 319  */
 320 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 321 {
 322         switch (argc) {
 323     case 0:
 324     case 1:     printf ("Usage:\n%s\n", cmdtp->usage);  return 1;
 325     case 2:
 326                         if (strncmp(argv[1],"res",3) == 0) {
 327                                 printf("\nReset SCSI\n");
 328                                 scsi_bus_reset();
 329                                 scsi_scan(1);
 330                                 return 0;
 331                         }
 332                         if (strncmp(argv[1],"inf",3) == 0) {
 333                                 int i;
 334                                 for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
 335                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
 336                                                 continue; /* list only known devices */
 337                                         printf ("SCSI dev. %d:  ", i);
 338                                         dev_print(&scsi_dev_desc[i]);
 339                                 }
 340                                 return 0;
 341                         }
 342                         if (strncmp(argv[1],"dev",3) == 0) {
 343                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
 344                                         printf("\nno SCSI devices available\n");
 345                                         return 1;
 346                                 }
 347                                 printf ("\n    Device %d: ", scsi_curr_dev);
 348                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
 349                                 return 0;
 350                         }
 351                         if (strncmp(argv[1],"scan",4) == 0) {
 352                                 scsi_scan(1);
 353                                 return 0;
 354                         }
 355                         if (strncmp(argv[1],"part",4) == 0) {
 356                                 int dev, ok;
 357                                 for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
 358                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
 359                                                 ok++;
 360                                                 if (dev)
 361                                                         printf("\n");
 362                                                 PRINTF("print_part of %x\n",dev);
 363                                                         print_part(&scsi_dev_desc[dev]);
 364                                         }
 365                                 }
 366                                 if (!ok)
 367                                         printf("\nno SCSI devices available\n");
 368                                 return 1;
 369                         }
 370                         printf ("Usage:\n%s\n", cmdtp->usage);
 371                         return 1;
 372         case 3:
 373                         if (strncmp(argv[1],"dev",3) == 0) {
 374                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 375                                 printf ("\nSCSI device %d: ", dev);
 376                                 if (dev >= CFG_SCSI_MAX_DEVICE) {
 377                                         printf("unknown device\n");
 378                                         return 1;
 379                                 }
 380                                 printf ("\n    Device %d: ", dev);
 381                                 dev_print(&scsi_dev_desc[dev]);
 382                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 383                                         return 1;
 384                                 }
 385                                 scsi_curr_dev = dev;
 386                                 printf("... is now current device\n");
 387                                 return 0;
 388                         }
 389                         if (strncmp(argv[1],"part",4) == 0) {
 390                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 391                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
 392                                         print_part(&scsi_dev_desc[dev]);
 393                                 }
 394                                 else {
 395                                         printf ("\nSCSI device %d not available\n", dev);
 396                                 }
 397                                 return 1;
 398                         }
 399                         printf ("Usage:\n%s\n", cmdtp->usage);
 400                         return 1;
 401     default:
 402                         /* at least 4 args */
 403                         if (strcmp(argv[1],"read") == 0) {
 404                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 405                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
 406                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
 407                                 ulong n;
 408                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
 409                                                 scsi_curr_dev, blk, cnt);
 410                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
 411                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
 412                                 return 0;
 413                         }
 414         } /* switch */
 415         printf ("Usage:\n%s\n", cmdtp->usage);
 416         return 1;
 417 }
 418
 419 /****************************************************************************************
 420  * scsi_read
 421  */
 422
 423 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
 424
 425 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
 426 {
 427         ulong start,blks, buf_addr;
 428         unsigned short smallblks;
 429         ccb* pccb=(ccb *)&tempccb;
 430         device&=0xff;
 431         /* Setup  device
 432          */
 433         pccb->target=scsi_dev_desc[device].target;
 434         pccb->lun=scsi_dev_desc[device].lun;
 435         buf_addr=(unsigned long)buffer;
 436         start=blknr;
 437         blks=blkcnt;
 438         PRINTF("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
 439         do {
 440                 pccb->pdata=(unsigned char *)buf_addr;
 441                 if(blks>SCSI_MAX_READ_BLK) {
 442                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
 443                         smallblks=SCSI_MAX_READ_BLK;
 444                         scsi_setup_read_ext(pccb,start,smallblks);
 445                         start+=SCSI_MAX_READ_BLK;
 446                         blks-=SCSI_MAX_READ_BLK;
 447                 }
 448                 else {
 449                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
 450                         smallblks=(unsigned short) blks;
 451                         scsi_setup_read_ext(pccb,start,smallblks);
 452                         start+=blks;
 453                         blks=0;
 454                 }
 455                 PRINTF("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 456                 if(scsi_exec(pccb)!=TRUE) {
 457                         scsi_print_error(pccb);
 458                         blkcnt-=blks;
 459                         break;
 460                 }
 461                 buf_addr+=pccb->datalen;
 462         } while(blks!=0);
 463         PRINTF("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 464         return(blkcnt);
 465 }
 466
 467 /* copy src to dest, skipping leading and trailing blanks
 468  * and null terminate the string
 469  */
 470 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
 471 {
 472         int start,end;
 473
 474         start=0;
 475         while(start<len) {
 476                 if(src[start]!=' ')
 477                         break;
 478                 start++;
 479         }
 480         end=len-1;
 481         while(end>start) {
 482                 if(src[end]!=' ')
 483                         break;
 484                 end--;
 485         }
 486         for( ; start<=end; start++) {
 487                 *dest++=src[start];
 488         }
 489         *dest='\0';
 490 }
 491
 492
 493 /* Trim trailing blanks, and NUL-terminate string
 494  */
 495 void scsi_trim_trail (unsigned char *str, unsigned int len)
 496 {
 497         unsigned char *p = str + len - 1;
 498
 499         while (len-- > 0) {
 500                 *p-- = '\0';
 501                 if (*p != ' ') {
 502                         return;
 503                 }
 504         }
 505 }
 506
 507
 508 /************************************************************************************
 509  * Some setup (fill-in) routines
 510  */
 511 void scsi_setup_test_unit_ready(ccb * pccb)
 512 {
 513         pccb->cmd[0]=SCSI_TST_U_RDY;
 514         pccb->cmd[1]=pccb->lun<<5;
 515         pccb->cmd[2]=0;
 516         pccb->cmd[3]=0;
 517         pccb->cmd[4]=0;
 518         pccb->cmd[5]=0;
 519         pccb->cmdlen=6;
 520         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 521 }
 522
 523 void scsi_setup_read_capacity(ccb * pccb)
 524 {
 525         pccb->cmd[0]=SCSI_RD_CAPAC;
 526         pccb->cmd[1]=pccb->lun<<5;
 527         pccb->cmd[2]=0;
 528         pccb->cmd[3]=0;
 529         pccb->cmd[4]=0;
 530         pccb->cmd[5]=0;
 531         pccb->cmd[6]=0;
 532         pccb->cmd[7]=0;
 533         pccb->cmd[8]=0;
 534         pccb->cmd[9]=0;
 535         pccb->cmdlen=10;
 536         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 537
 538 }
 539
 540 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
 541 {
 542         pccb->cmd[0]=SCSI_READ10;
 543         pccb->cmd[1]=pccb->lun<<5;
 544         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
 545         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
 546         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
 547         pccb->cmd[5]=((unsigned char) (start))&0xff;
 548         pccb->cmd[6]=0;
 549         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 550         pccb->cmd[8]=(unsigned char) blocks & 0xff;
 551         pccb->cmd[6]=0;
 552         pccb->cmdlen=10;
 553         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 554         PRINTF("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 555                 pccb->cmd[0],pccb->cmd[1],
 556                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
 557                 pccb->cmd[7],pccb->cmd[8]);
 558 }
 559
 560 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
 561 {
 562         pccb->cmd[0]=SCSI_READ6;
 563         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
 564         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
 565         pccb->cmd[3]=((unsigned char) (start))&0xff;
 566         pccb->cmd[4]=(unsigned char) blocks & 0xff;
 567         pccb->cmd[5]=0;
 568         pccb->cmdlen=6;
 569         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 570         PRINTF("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
 571                 pccb->cmd[0],pccb->cmd[1],
 572                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
 573 }
 574
 575
 576 void scsi_setup_inquiry(ccb * pccb)
 577 {
 578         pccb->cmd[0]=SCSI_INQUIRY;
 579         pccb->cmd[1]=pccb->lun<<5;
 580         pccb->cmd[2]=0;
 581         pccb->cmd[3]=0;
 582         if(pccb->datalen>255)
 583                 pccb->cmd[4]=255;
 584         else
 585                 pccb->cmd[4]=(unsigned char)pccb->datalen;
 586         pccb->cmd[5]=0;
 587         pccb->cmdlen=6;
 588         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 589 }
 590
 591 #endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */