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 <cmd_boot.h>
  34 #include <asm/processor.h>
  35 #include <scsi.h>
  36 #include <image.h>
  37 #include <cmd_disk.h>
  38 #include <pci.h>
  39
  40
  41 #undef  SCSI_DEBUG
  42
  43 #ifdef  SCSI_DEBUG
  44 #define PRINTF(fmt,args...)     printf (fmt ,##args)
  45 #else
  46 #define PRINTF(fmt,args...)
  47 #endif
  48
  49 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
  50
  51 #ifdef CONFIG_SCSI_SYM53C8XX
  52 #define SCSI_VEND_ID    0x1000
  53 #ifndef CONFIG_SCSI_DEV_ID
  54 #define SCSI_DEV_ID             0x0001
  55 #else
  56 #define SCSI_DEV_ID             CONFIG_SCSI_DEV_ID
  57 #endif
  58 #else
  59 #error CONFIG_SCSI_SYM53C8XX must be defined
  60 #endif
  61
  62
  63 static ccb tempccb;     /* temporary scsi command buffer */
  64
  65 static unsigned char tempbuff[512]; /* temporary data buffer */
  66
  67 static int scsi_max_devs; /* number of highest available scsi device */
  68
  69 static int scsi_curr_dev; /* current device */
  70
  71 static block_dev_desc_t scsi_dev_desc[CFG_SCSI_MAX_DEVICE];
  72
  73 /********************************************************************************
  74  *  forward declerations of some Setup Routines
  75  */
  76 void scsi_setup_test_unit_ready(ccb * pccb);
  77 void scsi_setup_read_capacity(ccb * pccb);
  78 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
  79 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
  80 void scsi_setup_inquiry(ccb * pccb);
  81 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
  82
  83
  84 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer);
  85
  86
  87 /*********************************************************************************
  88  * (re)-scan the scsi bus and reports scsi device info
  89  * to the user if mode = 1
  90  */
  91 void scsi_scan(int mode)
  92 {
  93         unsigned char i,perq,modi,lun;
  94         unsigned long capacity,blksz;
  95         ccb* pccb=(ccb *)&tempccb;
  96
  97         if(mode==1) {
  98                 printf("scanning bus for devices...\n");
  99         }
 100         for(i=0;i<CFG_SCSI_MAX_DEVICE;i++) {
 101                 scsi_dev_desc[i].target=0xff;
 102                 scsi_dev_desc[i].lun=0xff;
 103                 scsi_dev_desc[i].lba=0;
 104                 scsi_dev_desc[i].blksz=0;
 105                 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
 106                 scsi_dev_desc[i].vendor[0]=0;
 107                 scsi_dev_desc[i].product[0]=0;
 108                 scsi_dev_desc[i].revision[0]=0;
 109                 scsi_dev_desc[i].removable=FALSE;
 110                 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
 111                 scsi_dev_desc[i].dev=i;
 112                 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
 113                 scsi_dev_desc[i].block_read=scsi_read;
 114         }
 115         scsi_max_devs=0;
 116         for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
 117                 pccb->target=i;
 118                 for(lun=0;lun<CFG_SCSI_MAX_LUN;lun++) {
 119                         pccb->lun=lun;
 120                         pccb->pdata=(unsigned char *)&tempbuff;
 121                         pccb->datalen=512;
 122                         scsi_setup_inquiry(pccb);
 123                         if(scsi_exec(pccb)!=TRUE) {
 124                                 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
 125                                         PRINTF("Selection timeout ID %d\n",pccb->target);
 126                                         continue; /* selection timeout => assuming no device present */
 127                                 }
 128                                 scsi_print_error(pccb);
 129                                 continue;
 130                         }
 131                         perq=tempbuff[0];
 132                         modi=tempbuff[1];
 133                         if((perq & 0x1f)==0x1f) {
 134                                 continue; /* skip unknown devices */
 135                         }
 136                         if((modi&0x80)==0x80) /* drive is removable */
 137                                 scsi_dev_desc[scsi_max_devs].removable=TRUE;
 138                         /* get info for this device */
 139                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].vendor[0],&tempbuff[8],8);
 140                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].product[0],&tempbuff[16],16);
 141                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].revision[0],&tempbuff[32],4);
 142                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
 143                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
 144
 145                         pccb->datalen=0;
 146                         scsi_setup_test_unit_ready(pccb);
 147                         if(scsi_exec(pccb)!=TRUE) {
 148                                 if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
 149                                         scsi_dev_desc[scsi_max_devs].type=perq;
 150                                         goto removable;
 151                                 }
 152                                 scsi_print_error(pccb);
 153                                 continue;
 154                         }
 155                         pccb->datalen=8;
 156                         scsi_setup_read_capacity(pccb);
 157                         if(scsi_exec(pccb)!=TRUE) {
 158                                 scsi_print_error(pccb);
 159                                 continue;
 160                         }
 161                         capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
 162                                         ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
 163                         blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
 164                                 ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
 165                         scsi_dev_desc[scsi_max_devs].lba=capacity;
 166                         scsi_dev_desc[scsi_max_devs].blksz=blksz;
 167                         scsi_dev_desc[scsi_max_devs].type=perq;
 168                         init_part(&scsi_dev_desc[scsi_max_devs]);
 169 removable:
 170                         if(mode==1) {
 171                                 printf ("  Device %d: ", scsi_max_devs);
 172                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
 173                         } /* if mode */
 174                         scsi_max_devs++;
 175                 } /* next LUN */
 176         }
 177         if(scsi_max_devs>0)
 178                 scsi_curr_dev=0;
 179         else
 180                 scsi_curr_dev=-1;
 181 }
 182
 183
 184
 185 void scsi_init(void)
 186 {
 187         int busdevfunc;
 188
 189         busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
 190         if(busdevfunc==-1) {
 191                 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
 192                 return;
 193         }
 194 #ifdef DEBUG
 195         else {
 196                 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);
 197         }
 198 #endif
 199         scsi_low_level_init(busdevfunc);
 200         scsi_scan(1);
 201 }
 202
 203 block_dev_desc_t * scsi_get_dev(int dev)
 204 {
 205         return((block_dev_desc_t *)&scsi_dev_desc[dev]);
 206 }
 207
 208
 209
 210 /******************************************************************************
 211  * scsi boot command intepreter. Derived from diskboot
 212  */
 213 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 214 {
 215         char *boot_device = NULL;
 216         char *ep;
 217         int dev, part = 0;
 218         ulong cnt;
 219         ulong addr;
 220         disk_partition_t info;
 221         image_header_t *hdr;
 222         int rcode = 0;
 223
 224         switch (argc) {
 225         case 1:
 226                 addr = CFG_LOAD_ADDR;
 227                 boot_device = getenv ("bootdevice");
 228                 break;
 229         case 2:
 230                 addr = simple_strtoul(argv[1], NULL, 16);
 231                 boot_device = getenv ("bootdevice");
 232                 break;
 233         case 3:
 234                 addr = simple_strtoul(argv[1], NULL, 16);
 235                 boot_device = argv[2];
 236                 break;
 237         default:
 238                 printf ("Usage:\n%s\n", cmdtp->usage);
 239                 return 1;
 240         }
 241
 242         if (!boot_device) {
 243                 puts ("\n** No boot device **\n");
 244                 return 1;
 245         }
 246
 247         dev = simple_strtoul(boot_device, &ep, 16);
 248         printf("booting from dev %d\n",dev);
 249         if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 250                 printf ("\n** Device %d not available\n", dev);
 251                 return 1;
 252         }
 253
 254         if (*ep) {
 255                 if (*ep != ':') {
 256                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
 257                         return 1;
 258                 }
 259                 part = simple_strtoul(++ep, NULL, 16);
 260         }
 261         if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
 262                 printf("error reading partinfo\n");
 263                 return 1;
 264         }
 265         if ((strncmp(info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
 266             (strncmp(info.type, BOOT_PART_COMP, sizeof(info.type)) != 0)) {
 267                 printf ("\n** Invalid partition type \"%.32s\""
 268                         " (expect \"" BOOT_PART_TYPE "\")\n",
 269                         info.type);
 270                 return 1;
 271         }
 272
 273         printf ("\nLoading from SCSI device %d, partition %d: "
 274                 "Name: %.32s  Type: %.32s\n",
 275                 dev, part, info.name, info.type);
 276
 277         PRINTF ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
 278                 info.start, info.size, info.blksz);
 279
 280         if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
 281                 printf ("** Read error on %d:%d\n", dev, part);
 282                 return 1;
 283         }
 284
 285         hdr = (image_header_t *)addr;
 286
 287         if (hdr->ih_magic == IH_MAGIC) {
 288
 289                 print_image_hdr (hdr);
 290                 cnt = (hdr->ih_size + sizeof(image_header_t));
 291                 cnt += info.blksz - 1;
 292                 cnt /= info.blksz;
 293                 cnt -= 1;
 294         } else {
 295                 printf("\n** Bad Magic Number **\n");
 296                 return 1;
 297         }
 298
 299         if (scsi_read (dev, info.start+1, cnt,
 300                       (ulong *)(addr+info.blksz)) != cnt) {
 301                 printf ("** Read error on %d:%d\n", dev, part);
 302                 return 1;
 303         }
 304         /* Loading ok, update default load address */
 305         load_addr = addr;
 306
 307         flush_cache (addr, (cnt+1)*info.blksz);
 308
 309         /* Check if we should attempt an auto-start */
 310         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
 311                 char *local_args[2];
 312                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
 313                 local_args[0] = argv[0];
 314                 local_args[1] = NULL;
 315                 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
 316                 rcode = do_bootm (cmdtp, 0, 1, local_args);
 317         }
 318          return rcode;
 319 }
 320
 321 /*********************************************************************************
 322  * scsi command intepreter
 323  */
 324 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 325 {
 326         switch (argc) {
 327     case 0:
 328     case 1:     printf ("Usage:\n%s\n", cmdtp->usage);  return 1;
 329     case 2:
 330                         if (strncmp(argv[1],"res",3) == 0) {
 331                                 printf("\nReset SCSI\n");
 332                                 scsi_bus_reset();
 333                                 scsi_scan(1);
 334                                 return 0;
 335                         }
 336                         if (strncmp(argv[1],"inf",3) == 0) {
 337                                 int i;
 338                                 for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
 339                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
 340                                                 continue; /* list only known devices */
 341                                         printf ("SCSI dev. %d:  ", i);
 342                                         dev_print(&scsi_dev_desc[i]);
 343                                 }
 344                                 return 0;
 345                         }
 346                         if (strncmp(argv[1],"dev",3) == 0) {
 347                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
 348                                         printf("\nno SCSI devices available\n");
 349                                         return 1;
 350                                 }
 351                                 printf ("\n    Device %d: ", scsi_curr_dev);
 352                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
 353                                 return 0;
 354                         }
 355                         if (strncmp(argv[1],"scan",4) == 0) {
 356                                 scsi_scan(1);
 357                                 return 0;
 358                         }
 359                         if (strncmp(argv[1],"part",4) == 0) {
 360                                 int dev, ok;
 361                                 for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
 362                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
 363                                                 ok++;
 364                                                 if (dev)
 365                                                         printf("\n");
 366                                                 PRINTF("print_part of %x\n",dev);
 367                                                         print_part(&scsi_dev_desc[dev]);
 368                                         }
 369                                 }
 370                                 if (!ok)
 371                                         printf("\nno SCSI devices available\n");
 372                                 return 1;
 373                         }
 374                         printf ("Usage:\n%s\n", cmdtp->usage);
 375                         return 1;
 376         case 3:
 377                         if (strncmp(argv[1],"dev",3) == 0) {
 378                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 379                                 printf ("\nSCSI device %d: ", dev);
 380                                 if (dev >= CFG_SCSI_MAX_DEVICE) {
 381                                         printf("unknown device\n");
 382                                         return 1;
 383                                 }
 384                                 printf ("\n    Device %d: ", dev);
 385                                 dev_print(&scsi_dev_desc[dev]);
 386                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
 387                                         return 1;
 388                                 }
 389                                 scsi_curr_dev = dev;
 390                                 printf("... is now current device\n");
 391                                 return 0;
 392                         }
 393                         if (strncmp(argv[1],"part",4) == 0) {
 394                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
 395                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
 396                                         print_part(&scsi_dev_desc[dev]);
 397                                 }
 398                                 else {
 399                                         printf ("\nSCSI device %d not available\n", dev);
 400                                 }
 401                                 return 1;
 402                         }
 403                         printf ("Usage:\n%s\n", cmdtp->usage);
 404                         return 1;
 405     default:
 406                         /* at least 4 args */
 407                         if (strcmp(argv[1],"read") == 0) {
 408                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
 409                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
 410                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
 411                                 ulong n;
 412                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
 413                                                 scsi_curr_dev, blk, cnt);
 414                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
 415                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
 416                                 return 0;
 417                         }
 418         } /* switch */
 419         printf ("Usage:\n%s\n", cmdtp->usage);
 420         return 1;
 421 }
 422
 423 /****************************************************************************************
 424  * scsi_read
 425  */
 426
 427 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
 428
 429 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
 430 {
 431         ulong start,blks, buf_addr;
 432         unsigned short smallblks;
 433         ccb* pccb=(ccb *)&tempccb;
 434         device&=0xff;
 435         /* Setup  device
 436          */
 437         pccb->target=scsi_dev_desc[device].target;
 438         pccb->lun=scsi_dev_desc[device].lun;
 439         buf_addr=(unsigned long)buffer;
 440         start=blknr;
 441         blks=blkcnt;
 442         PRINTF("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
 443         do {
 444                 pccb->pdata=(unsigned char *)buf_addr;
 445                 if(blks>SCSI_MAX_READ_BLK) {
 446                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
 447                         smallblks=SCSI_MAX_READ_BLK;
 448                         scsi_setup_read_ext(pccb,start,smallblks);
 449                         start+=SCSI_MAX_READ_BLK;
 450                         blks-=SCSI_MAX_READ_BLK;
 451                 }
 452                 else {
 453                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
 454                         smallblks=(unsigned short) blks;
 455                         scsi_setup_read_ext(pccb,start,smallblks);
 456                         start+=blks;
 457                         blks=0;
 458                 }
 459                 PRINTF("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 460                 if(scsi_exec(pccb)!=TRUE) {
 461                         scsi_print_error(pccb);
 462                         blkcnt-=blks;
 463                         break;
 464                 }
 465                 buf_addr+=pccb->datalen;
 466         } while(blks!=0);
 467         PRINTF("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
 468         return(blkcnt);
 469 }
 470
 471 /* copy src to dest, skipping leading and trailing blanks
 472  * and null terminate the string
 473  */
 474 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
 475 {
 476         int start,end;
 477
 478         start=0;
 479         while(start<len) {
 480                 if(src[start]!=' ')
 481                         break;
 482                 start++;
 483         }
 484         end=len-1;
 485         while(end>start) {
 486                 if(src[end]!=' ')
 487                         break;
 488                 end--;
 489         }
 490         for( ; start<=end; start++) {
 491                 *dest++=src[start];
 492         }
 493         *dest='\0';
 494 }
 495
 496
 497
 498 /* Trim trailing blanks, and NUL-terminate string
 499  */
 500 void scsi_trim_trail (unsigned char *str, unsigned int len)
 501 {
 502         unsigned char *p = str + len - 1;
 503
 504         while (len-- > 0) {
 505                 *p-- = '\0';
 506                 if (*p != ' ') {
 507                         return;
 508                 }
 509         }
 510 }
 511
 512
 513 /************************************************************************************
 514  * Some setup (fill-in) routines
 515  */
 516 void scsi_setup_test_unit_ready(ccb * pccb)
 517 {
 518         pccb->cmd[0]=SCSI_TST_U_RDY;
 519         pccb->cmd[1]=pccb->lun<<5;
 520         pccb->cmd[2]=0;
 521         pccb->cmd[3]=0;
 522         pccb->cmd[4]=0;
 523         pccb->cmd[5]=0;
 524         pccb->cmdlen=6;
 525         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 526 }
 527
 528 void scsi_setup_read_capacity(ccb * pccb)
 529 {
 530         pccb->cmd[0]=SCSI_RD_CAPAC;
 531         pccb->cmd[1]=pccb->lun<<5;
 532         pccb->cmd[2]=0;
 533         pccb->cmd[3]=0;
 534         pccb->cmd[4]=0;
 535         pccb->cmd[5]=0;
 536         pccb->cmd[6]=0;
 537         pccb->cmd[7]=0;
 538         pccb->cmd[8]=0;
 539         pccb->cmd[9]=0;
 540         pccb->cmdlen=10;
 541         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 542
 543 }
 544
 545 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
 546 {
 547         pccb->cmd[0]=SCSI_READ10;
 548         pccb->cmd[1]=pccb->lun<<5;
 549         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
 550         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
 551         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
 552         pccb->cmd[5]=((unsigned char) (start))&0xff;
 553         pccb->cmd[6]=0;
 554         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
 555         pccb->cmd[8]=(unsigned char) blocks & 0xff;
 556         pccb->cmd[6]=0;
 557         pccb->cmdlen=10;
 558         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 559         PRINTF("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
 560                 pccb->cmd[0],pccb->cmd[1],
 561                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
 562                 pccb->cmd[7],pccb->cmd[8]);
 563 }
 564
 565 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
 566 {
 567         pccb->cmd[0]=SCSI_READ6;
 568         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
 569         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
 570         pccb->cmd[3]=((unsigned char) (start))&0xff;
 571         pccb->cmd[4]=(unsigned char) blocks & 0xff;
 572         pccb->cmd[5]=0;
 573         pccb->cmdlen=6;
 574         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 575         PRINTF("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
 576                 pccb->cmd[0],pccb->cmd[1],
 577                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
 578 }
 579
 580
 581 void scsi_setup_inquiry(ccb * pccb)
 582 {
 583         pccb->cmd[0]=SCSI_INQUIRY;
 584         pccb->cmd[1]=pccb->lun<<5;
 585         pccb->cmd[2]=0;
 586         pccb->cmd[3]=0;
 587         if(pccb->datalen>255)
 588                 pccb->cmd[4]=255;
 589         else
 590                 pccb->cmd[4]=(unsigned char)pccb->datalen;
 591         pccb->cmd[5]=0;
 592         pccb->cmdlen=6;
 593         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
 594 }
 595
 596 #endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */
 597
 598