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 <cmd_disk.h>
  37 #include <pci.h>
  38
  39
  40 #undef  SCSI_DEBUG
  41
  42 #ifdef  SCSI_DEBUG
  43 #define PRINTF(fmt,args...)     printf (fmt ,##args)
  44 #else
  45 #define PRINTF(fmt,args...)
  46 #endif
  47
  48 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
  49
  50 #ifdef CONFIG_SCSI_SYM53C8XX
  51 #define SCSI_VEND_ID    0x1000
  52 #ifndef CONFIG_SCSI_DEV_ID
  53 #define SCSI_DEV_ID             0x0001
  54 #else
  55 #define SCSI_DEV_ID             CONFIG_SCSI_DEV_ID
  56 #endif
  57 #else
  58 #error CONFIG_SCSI_SYM53C8XX must be defined
  59 #endif
  60
  61
  62 static ccb tempccb;     /* temporary scsi command buffer */
  63
  64 static unsigned char tempbuff[512]; /* temporary data buffer */
  65
  66 static int scsi_max_devs; /* number of highest available scsi device */
  67
  68 static int scsi_curr_dev; /* current device */
  69
  70 static block_dev_desc_t scsi_dev_desc[CFG_SCSI_MAX_DEVICE];
  71
  72 /********************************************************************************
  73  *  forward declerations of some Setup Routines
  74  */
  75 void scsi_setup_test_unit_ready(ccb * pccb);
  76 void scsi_setup_read_capacity(ccb * pccb);
  77 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
  78 void scsi_setup_read_ext(ccb * pccb, unsigned long start, 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 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer);
  84
  85
  86 /*********************************************************************************
  87  * (re)-scan the scsi bus and reports scsi device info
  88  * to the user if mode = 1
  89  */
  90 void scsi_scan(int mode)
  91 {
  92         unsigned char i,perq,modi,lun;
  93         unsigned long capacity,blksz;
  94         ccb* pccb=(ccb *)&tempccb;
  95
  96         if(mode==1) {
  97                 printf("scanning bus for devices...\n");
  98         }
  99         for(i=0;i<CFG_SCSI_MAX_DEVICE;i++) {
 100                 scsi_dev_desc[i].target=0xff;
 101                 scsi_dev_desc[i].lun=0xff;
 102                 scsi_dev_desc[i].lba=0;
 103                 scsi_dev_desc[i].blksz=0;
 104                 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
 105                 scsi_dev_desc[i].vendor[0]=0;
 106                 scsi_dev_desc[i].product[0]=0;
 107                 scsi_dev_desc[i].revision[0]=0;
 108                 scsi_dev_desc[i].removable=FALSE;
 109                 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
 110                 scsi_dev_desc[i].dev=i;
 111                 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 112                 scsi_dev_desc[i].block_read=scsi_read;
 113         }
 114         scsi_max_devs=0;
 115         for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
 116                 pccb->target=i;
 117                 for(lun=0;lun<CFG_SCSI_MAX_LUN;lun++) {
 118                         pccb->lun=lun;
 119                         pccb->pdata=(unsigned char *)&tempbuff;
 120                         pccb->datalen=512;
 121                         scsi_setup_inquiry(pccb);
 122                         if(scsi_exec(pccb)!=TRUE) {
 123                                 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
 124                                         PRINTF("Selection timeout ID %d\n",pccb->target);
 125                                         continue; /* selection timeout => assuming no device present */
 126                                 }
 127                                 scsi_print_error(pccb);
 128                                 continue;
 129                         }
 130                         perq=tempbuff[0];
 131                         modi=tempbuff[1];
 132                         if((perq & 0x1f)==0x1f) {
 133                                 continue; /* skip unknown devices */
 134                         }
 135                         if((modi&0x80)==0x80) /* drive is removable */
 136                                 scsi_dev_desc[scsi_max_devs].removable=TRUE;
 137                         /* get info for this device */
 138                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].vendor[0],&tempbuff[8],8);
 139                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].product[0],&tempbuff[16],16);
 140                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].revision[0],&tempbuff[32],4);
 141                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
 142                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
 143
 144                         pccb->datalen=0;
 145                         scsi_setup_test_unit_ready(pccb);
 146                         if(scsi_exec(pccb)!=TRUE) {
 147                                 if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
 148                                         scsi_dev_desc[scsi_max_devs].type=perq;
 149                                         goto removable;
 150                                 }
 151                                 scsi_print_error(pccb);
 152                                 continue;
 153                         }
 154                         pccb->datalen=8;
 155                         scsi_setup_read_capacity(pccb);
 156                         if(scsi_exec(pccb)!=TRUE) {
 157                                 scsi_print_error(pccb);
 158                                 continue;
 159                         }
 160                         capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
 161                                         ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
 162                         blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
 163                                 ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
 164                         scsi_dev_desc[scsi_max_devs].lba=capacity;
 165                         scsi_dev_desc[scsi_max_devs].blksz=blksz;
 166                         scsi_dev_desc[scsi_max_devs].type=perq;
 167                         init_part(&scsi_dev_desc[scsi_max_devs]);
 168 removable:
 169                         if(mode==1) {
 170                                 printf ("  Device %d: ", scsi_max_devs);
 171                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
 172                         } /* if mode */
 173                         scsi_max_devs++;
 174                 } /* next LUN */
 175         }
 176         if(scsi_max_devs>0)
 177                 scsi_curr_dev=0;
 178         else
 179                 scsi_curr_dev=-1;
 180 }
 181
 182
 183 void scsi_init(void)
 184 {
 185         int busdevfunc;
 186
 187         busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
 188         if(busdevfunc==-1) {
 189                 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
 190                 return;
 191         }
 192 #ifdef DEBUG
 193         else {
 194                 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);
 195         }
 196 #endif
 197         scsi_low_level_init(busdevfunc);
 198         scsi_scan(1);
 199 }
 200
 201 block_dev_desc_t * scsi_get_dev(int dev)
 202 {
 203         return((block_dev_desc_t *)&scsi_dev_desc[dev]);
 204 }
 205
 206
 207 /******************************************************************************
 208  * scsi boot command intepreter. Derived from diskboot
 209  */
 210 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 211 {
 212         char *boot_device = NULL;
 213         char *ep;
 214         int dev, part = 0;
 215         ulong cnt;
 216         ulong addr;
 217         disk_partition_t info;
 218         image_header_t *hdr;
 219         int rcode = 0;
 220
 221         switch (argc) {
 222         case 1:
 223                 addr = CFG_LOAD_ADDR;
 224                 boot_device = getenv ("bootdevice");
 225                 break;
 226         case 2:
 227                 addr = simple_strtoul(argv[1], NULL, 16);
 228                 boot_device = getenv ("bootdevice");
 229                 break;
 230         case 3:
 231                 addr = simple_strtoul(argv[1], NULL, 16);
 232                 boot_device = argv[2];
 233                 break;
 234         default:
 235                 printf ("Usage:\n%s\n", cmdtp->usage);
 236                 return 1;
 237         }
 238
 239         if (!boot_device) {
 240                 puts ("\n** No boot device **\n");
 241                 return 1;
 242         }
 243
 244         dev = simple_strtoul(boot_device, &ep, 16);
 245         printf("booting from dev %d\n",dev);
 246         if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 247                 printf ("\n** Device %d not available\n", dev);
 248                 return 1;
 249         }
 250
 251         if (*ep) {
 252                 if (*ep != ':') {
 253                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 254                         return 1;
 255                 }
 256                 part = simple_strtoul(++ep, NULL, 16);
 257         }
 258         if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
 259                 printf("error reading partinfo\n");
 260                 return 1;
 261         }
 262         if ((strncmp(info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
 263             (strncmp(info.type, BOOT_PART_COMP, sizeof(info.type)) != 0)) {
 264                 printf ("\n** Invalid partition type \"%.32s\""
 265                         " (expect \"" BOOT_PART_TYPE "\")\n",
 266                         info.type);
 267                 return 1;
 268         }
 269
 270         printf ("\nLoading from SCSI device %d, partition %d: "
 271                 "Name: %.32s  Type: %.32s\n",
 272                 dev, part, info.name, info.type);
 273
 274         PRINTF ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
 275                 info.start, info.size, info.blksz);
 276
 277         if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
 278                 printf ("** Read error on %d:%d\n", dev, part);
 279                 return 1;
 280         }
 281
 282         hdr = (image_header_t *)addr;
 283
 284         if (hdr->ih_magic == IH_MAGIC) {
 285
 286                 print_image_hdr (hdr);
 287                 cnt = (hdr->ih_size + sizeof(image_header_t));
 288                 cnt += info.blksz - 1;
 289                 cnt /= info.blksz;
 290                 cnt -= 1;
 291         } else {
 292                 printf("\n** Bad Magic Number **\n");
 293                 return 1;
 294         }
 295
 296         if (scsi_read (dev, info.start+1, cnt,
 297                       (ulong *)(addr+info.blksz)) != cnt) {
 298                 printf ("** Read error on %d:%d\n", dev, part);
 299                 return 1;
 300         }
 301         /* Loading ok, update default load address */
 302         load_addr = addr;
 303
 304         flush_cache (addr, (cnt+1)*info.blksz);
 305
 306         /* Check if we should attempt an auto-start */
 307         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
 308                 char *local_args[2];
 309                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 310                 local_args[0] = argv[0];
 311                 local_args[1] = NULL;
 312                 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
 313                 rcode = do_bootm (cmdtp, 0, 1, local_args);
 314         }
 315          return rcode;
 316 }
 317
 318 /*********************************************************************************
 319  * scsi command intepreter
 320  */
 321 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 322 {
 323         switch (argc) {
 324     case 0:
 325     case 1:     printf ("Usage:\n%s\n", cmdtp->usage);  return 1;
 326     case 2:
 327                         if (strncmp(argv[1],"res",3) == 0) {
 328                                 printf("\nReset SCSI\n");
 329                                 scsi_bus_reset();
 330                                 scsi_scan(1);
 331                                 return 0;
 332                         }
 333                         if (strncmp(argv[1],"inf",3) == 0) {
 334                                 int i;
 335                                 for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
 336                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
 337                                                 continue; /* list only known devices */
 338                                         printf ("SCSI dev. %d:  ", i);
 339                                         dev_print(&scsi_dev_desc[i]);
 340                                 }
 341                                 return 0;
 342                         }
 343                         if (strncmp(argv[1],"dev",3) == 0) {
 344                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
 345                                         printf("\nno SCSI devices available\n");
 346                                         return 1;
 347                                 }
 348                                 printf ("\n    Device %d: ", scsi_curr_dev);
 349                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
 350                                 return 0;
 351                         }
 352                         if (strncmp(argv[1],"scan",4) == 0) {
 353                                 scsi_scan(1);
 354                                 return 0;
 355                         }
 356                         if (strncmp(argv[1],"part",4) == 0) {
 357                                 int dev, ok;
 358                                 for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
 359                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
 360                                                 ok++;
 361                                                 if (dev)
 362                                                         printf("\n");
 363                                                 PRINTF("print_part of %x\n",dev);
 364                                                         print_part(&scsi_dev_desc[dev]);
 365                                         }
 366                                 }
 367                                 if (!ok)
 368                                         printf("\nno SCSI devices available\n");
 369                                 return 1;
 370                         }
 371                         printf ("Usage:\n%s\n", cmdtp->usage);
 372                         return 1;
 373         case 3:
 374                         if (strncmp(argv[1],"dev",3) == 0) {
 375                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 376                                 printf ("\nSCSI device %d: ", dev);
 377                                 if (dev >= CFG_SCSI_MAX_DEVICE) {
 378                                         printf("unknown device\n");
 379                                         return 1;
 380                                 }
 381                                 printf ("\n    Device %d: ", dev);
 382                                 dev_print(&scsi_dev_desc[dev]);
 383                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 384                                         return 1;
 385                                 }
 386                                 scsi_curr_dev = dev;
 387                                 printf("... is now current device\n");
 388                                 return 0;
 389                         }
 390                         if (strncmp(argv[1],"part",4) == 0) {
 391                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 392                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
 393                                         print_part(&scsi_dev_desc[dev]);
 394                                 }
 395                                 else {
 396                                         printf ("\nSCSI device %d not available\n", dev);
 397                                 }
 398                                 return 1;
 399                         }
 400                         printf ("Usage:\n%s\n", cmdtp->usage);
 401                         return 1;
 402     default:
 403                         /* at least 4 args */
 404                         if (strcmp(argv[1],"read") == 0) {
 405                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 406                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
 407                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
 408                                 ulong n;
 409                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
 410                                                 scsi_curr_dev, blk, cnt);
 411                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
 412                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
 413                                 return 0;
 414                         }
 415         } /* switch */
 416         printf ("Usage:\n%s\n", cmdtp->usage);
 417         return 1;
 418 }
 419
 420 /****************************************************************************************
 421  * scsi_read
 422  */
 423
 424 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
 425
 426 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
 427 {
 428         ulong start,blks, buf_addr;
 429         unsigned short smallblks;
 430         ccb* pccb=(ccb *)&tempccb;
 431         device&=0xff;
 432         /* Setup  device
 433          */
 434         pccb->target=scsi_dev_desc[device].target;
 435         pccb->lun=scsi_dev_desc[device].lun;
 436         buf_addr=(unsigned long)buffer;
 437         start=blknr;
 438         blks=blkcnt;
 439         PRINTF("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
 440         do {
 441                 pccb->pdata=(unsigned char *)buf_addr;
 442                 if(blks>SCSI_MAX_READ_BLK) {
 443                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
 444                         smallblks=SCSI_MAX_READ_BLK;
 445                         scsi_setup_read_ext(pccb,start,smallblks);
 446                         start+=SCSI_MAX_READ_BLK;
 447                         blks-=SCSI_MAX_READ_BLK;
 448                 }
 449                 else {
 450                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
 451                         smallblks=(unsigned short) blks;
 452                         scsi_setup_read_ext(pccb,start,smallblks);
 453                         start+=blks;
 454                         blks=0;
 455                 }
 456                 PRINTF("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 457                 if(scsi_exec(pccb)!=TRUE) {
 458                         scsi_print_error(pccb);
 459                         blkcnt-=blks;
 460                         break;
 461                 }
 462                 buf_addr+=pccb->datalen;
 463         } while(blks!=0);
 464         PRINTF("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 465         return(blkcnt);
 466 }
 467
 468 /* copy src to dest, skipping leading and trailing blanks
 469  * and null terminate the string
 470  */
 471 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
 472 {
 473         int start,end;
 474
 475         start=0;
 476         while(start<len) {
 477                 if(src[start]!=' ')
 478                         break;
 479                 start++;
 480         }
 481         end=len-1;
 482         while(end>start) {
 483                 if(src[end]!=' ')
 484                         break;
 485                 end--;
 486         }
 487         for( ; start<=end; start++) {
 488                 *dest++=src[start];
 489         }
 490         *dest='\0';
 491 }
 492
 493
 494 /* Trim trailing blanks, and NUL-terminate string
 495  */
 496 void scsi_trim_trail (unsigned char *str, unsigned int len)
 497 {
 498         unsigned char *p = str + len - 1;
 499
 500         while (len-- > 0) {
 501                 *p-- = '\0';
 502                 if (*p != ' ') {
 503                         return;
 504                 }
 505         }
 506 }
 507
 508
 509 /************************************************************************************
 510  * Some setup (fill-in) routines
 511  */
 512 void scsi_setup_test_unit_ready(ccb * pccb)
 513 {
 514         pccb->cmd[0]=SCSI_TST_U_RDY;
 515         pccb->cmd[1]=pccb->lun<<5;
 516         pccb->cmd[2]=0;
 517         pccb->cmd[3]=0;
 518         pccb->cmd[4]=0;
 519         pccb->cmd[5]=0;
 520         pccb->cmdlen=6;
 521         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 522 }
 523
 524 void scsi_setup_read_capacity(ccb * pccb)
 525 {
 526         pccb->cmd[0]=SCSI_RD_CAPAC;
 527         pccb->cmd[1]=pccb->lun<<5;
 528         pccb->cmd[2]=0;
 529         pccb->cmd[3]=0;
 530         pccb->cmd[4]=0;
 531         pccb->cmd[5]=0;
 532         pccb->cmd[6]=0;
 533         pccb->cmd[7]=0;
 534         pccb->cmd[8]=0;
 535         pccb->cmd[9]=0;
 536         pccb->cmdlen=10;
 537         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 538
 539 }
 540
 541 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
 542 {
 543         pccb->cmd[0]=SCSI_READ10;
 544         pccb->cmd[1]=pccb->lun<<5;
 545         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
 546         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
 547         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
 548         pccb->cmd[5]=((unsigned char) (start))&0xff;
 549         pccb->cmd[6]=0;
 550         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 551         pccb->cmd[8]=(unsigned char) blocks & 0xff;
 552         pccb->cmd[6]=0;
 553         pccb->cmdlen=10;
 554         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 555         PRINTF("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 556                 pccb->cmd[0],pccb->cmd[1],
 557                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
 558                 pccb->cmd[7],pccb->cmd[8]);
 559 }
 560
 561 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
 562 {
 563         pccb->cmd[0]=SCSI_READ6;
 564         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
 565         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
 566         pccb->cmd[3]=((unsigned char) (start))&0xff;
 567         pccb->cmd[4]=(unsigned char) blocks & 0xff;
 568         pccb->cmd[5]=0;
 569         pccb->cmdlen=6;
 570         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 571         PRINTF("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
 572                 pccb->cmd[0],pccb->cmd[1],
 573                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
 574 }
 575
 576
 577 void scsi_setup_inquiry(ccb * pccb)
 578 {
 579         pccb->cmd[0]=SCSI_INQUIRY;
 580         pccb->cmd[1]=pccb->lun<<5;
 581         pccb->cmd[2]=0;
 582         pccb->cmd[3]=0;
 583         if(pccb->datalen>255)
 584                 pccb->cmd[4]=255;
 585         else
 586                 pccb->cmd[4]=(unsigned char)pccb->datalen;
 587         pccb->cmd[5]=0;
 588         pccb->cmdlen=6;
 589         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 590 }
 591
 592 #endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */