* Removed '--no-warn-mismatch' option from Makefile. This option
[platform/kernel/u-boot.git] / 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 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
38
39 #ifdef CONFIG_SCSI_SYM53C8XX
40 #define SCSI_VEND_ID    0x1000
41 #ifndef CONFIG_SCSI_DEV_ID
42 #define SCSI_DEV_ID             0x0001
43 #else
44 #define SCSI_DEV_ID             CONFIG_SCSI_DEV_ID
45 #endif
46 #else
47 #error CONFIG_SCSI_SYM53C8XX must be defined
48 #endif
49
50
51 static ccb tempccb;     /* temporary scsi command buffer */
52
53 static unsigned char tempbuff[512]; /* temporary data buffer */
54
55 static int scsi_max_devs; /* number of highest available scsi device */
56
57 static int scsi_curr_dev; /* current device */
58
59 static block_dev_desc_t scsi_dev_desc[CFG_SCSI_MAX_DEVICE];
60
61 /********************************************************************************
62  *  forward declerations of some Setup Routines
63  */
64 void scsi_setup_test_unit_ready(ccb * pccb);
65 void scsi_setup_read_capacity(ccb * pccb);
66 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
67 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
68 void scsi_setup_inquiry(ccb * pccb);
69 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
70
71
72 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer);
73
74
75 /*********************************************************************************
76  * (re)-scan the scsi bus and reports scsi device info
77  * to the user if mode = 1
78  */
79 void scsi_scan(int mode)
80 {
81         unsigned char i,perq,modi,lun;
82         unsigned long capacity,blksz;
83         ccb* pccb=(ccb *)&tempccb;
84
85         if(mode==1) {
86                 printf("scanning bus for devices...\n");
87         }
88         for(i=0;i<CFG_SCSI_MAX_DEVICE;i++) {
89                 scsi_dev_desc[i].target=0xff;
90                 scsi_dev_desc[i].lun=0xff;
91                 scsi_dev_desc[i].lba=0;
92                 scsi_dev_desc[i].blksz=0;
93                 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
94                 scsi_dev_desc[i].vendor[0]=0;
95                 scsi_dev_desc[i].product[0]=0;
96                 scsi_dev_desc[i].revision[0]=0;
97                 scsi_dev_desc[i].removable=FALSE;
98                 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
99                 scsi_dev_desc[i].dev=i;
100                 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
101                 scsi_dev_desc[i].block_read=scsi_read;
102         }
103         scsi_max_devs=0;
104         for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
105                 pccb->target=i;
106                 for(lun=0;lun<CFG_SCSI_MAX_LUN;lun++) {
107                         pccb->lun=lun;
108                         pccb->pdata=(unsigned char *)&tempbuff;
109                         pccb->datalen=512;
110                         scsi_setup_inquiry(pccb);
111                         if(scsi_exec(pccb)!=TRUE) {
112                                 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
113                                         debug ("Selection timeout ID %d\n",pccb->target);
114                                         continue; /* selection timeout => assuming no device present */
115                                 }
116                                 scsi_print_error(pccb);
117                                 continue;
118                         }
119                         perq=tempbuff[0];
120                         modi=tempbuff[1];
121                         if((perq & 0x1f)==0x1f) {
122                                 continue; /* skip unknown devices */
123                         }
124                         if((modi&0x80)==0x80) /* drive is removable */
125                                 scsi_dev_desc[scsi_max_devs].removable=TRUE;
126                         /* get info for this device */
127                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].vendor[0],&tempbuff[8],8);
128                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].product[0],&tempbuff[16],16);
129                         scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].revision[0],&tempbuff[32],4);
130                         scsi_dev_desc[scsi_max_devs].target=pccb->target;
131                         scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
132
133                         pccb->datalen=0;
134                         scsi_setup_test_unit_ready(pccb);
135                         if(scsi_exec(pccb)!=TRUE) {
136                                 if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
137                                         scsi_dev_desc[scsi_max_devs].type=perq;
138                                         goto removable;
139                                 }
140                                 scsi_print_error(pccb);
141                                 continue;
142                         }
143                         pccb->datalen=8;
144                         scsi_setup_read_capacity(pccb);
145                         if(scsi_exec(pccb)!=TRUE) {
146                                 scsi_print_error(pccb);
147                                 continue;
148                         }
149                         capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
150                                         ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
151                         blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
152                                 ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
153                         scsi_dev_desc[scsi_max_devs].lba=capacity;
154                         scsi_dev_desc[scsi_max_devs].blksz=blksz;
155                         scsi_dev_desc[scsi_max_devs].type=perq;
156                         init_part(&scsi_dev_desc[scsi_max_devs]);
157 removable:
158                         if(mode==1) {
159                                 printf ("  Device %d: ", scsi_max_devs);
160                                 dev_print(&scsi_dev_desc[scsi_max_devs]);
161                         } /* if mode */
162                         scsi_max_devs++;
163                 } /* next LUN */
164         }
165         if(scsi_max_devs>0)
166                 scsi_curr_dev=0;
167         else
168                 scsi_curr_dev=-1;
169 }
170
171
172 void scsi_init(void)
173 {
174         int busdevfunc;
175
176         busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
177         if(busdevfunc==-1) {
178                 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
179                 return;
180         }
181 #ifdef DEBUG
182         else {
183                 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);
184         }
185 #endif
186         scsi_low_level_init(busdevfunc);
187         scsi_scan(1);
188 }
189
190 block_dev_desc_t * scsi_get_dev(int dev)
191 {
192         return((block_dev_desc_t *)&scsi_dev_desc[dev]);
193 }
194
195
196 /******************************************************************************
197  * scsi boot command intepreter. Derived from diskboot
198  */
199 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
200 {
201         char *boot_device = NULL;
202         char *ep;
203         int dev, part = 0;
204         ulong addr, cnt, checksum;
205         disk_partition_t info;
206         image_header_t *hdr;
207         int rcode = 0;
208
209         switch (argc) {
210         case 1:
211                 addr = CFG_LOAD_ADDR;
212                 boot_device = getenv ("bootdevice");
213                 break;
214         case 2:
215                 addr = simple_strtoul(argv[1], NULL, 16);
216                 boot_device = getenv ("bootdevice");
217                 break;
218         case 3:
219                 addr = simple_strtoul(argv[1], NULL, 16);
220                 boot_device = argv[2];
221                 break;
222         default:
223                 printf ("Usage:\n%s\n", cmdtp->usage);
224                 return 1;
225         }
226
227         if (!boot_device) {
228                 puts ("\n** No boot device **\n");
229                 return 1;
230         }
231
232         dev = simple_strtoul(boot_device, &ep, 16);
233         printf("booting from dev %d\n",dev);
234         if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
235                 printf ("\n** Device %d not available\n", dev);
236                 return 1;
237         }
238
239         if (*ep) {
240                 if (*ep != ':') {
241                         puts ("\n** Invalid boot device, use `dev[:part]' **\n");
242                         return 1;
243                 }
244                 part = simple_strtoul(++ep, NULL, 16);
245         }
246         if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
247                 printf("error reading partinfo\n");
248                 return 1;
249         }
250         if ((strncmp(info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
251             (strncmp(info.type, BOOT_PART_COMP, sizeof(info.type)) != 0)) {
252                 printf ("\n** Invalid partition type \"%.32s\""
253                         " (expect \"" BOOT_PART_TYPE "\")\n",
254                         info.type);
255                 return 1;
256         }
257
258         printf ("\nLoading from SCSI device %d, partition %d: "
259                 "Name: %.32s  Type: %.32s\n",
260                 dev, part, info.name, info.type);
261
262         debug ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
263                 info.start, info.size, info.blksz);
264
265         if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
266                 printf ("** Read error on %d:%d\n", dev, part);
267                 return 1;
268         }
269
270         hdr = (image_header_t *)addr;
271
272         if (hdr->ih_magic == IH_MAGIC) {
273                 printf("\n** Bad Magic Number **\n");
274                 return 1;
275         }
276
277         checksum = ntohl(hdr->ih_hcrc);
278         hdr->ih_hcrc = 0;
279
280         if (crc32 (0, (char *)hdr, sizeof(image_header_t)) != checksum) {
281                 puts ("\n** Bad Header Checksum **\n");
282                 return 1;
283         }
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
291         if (scsi_read (dev, info.start+1, cnt,
292                       (ulong *)(addr+info.blksz)) != cnt) {
293                 printf ("** Read error on %d:%d\n", dev, part);
294                 return 1;
295         }
296         /* Loading ok, update default load address */
297         load_addr = addr;
298
299         flush_cache (addr, (cnt+1)*info.blksz);
300
301         /* Check if we should attempt an auto-start */
302         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
303                 char *local_args[2];
304                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
305                 local_args[0] = argv[0];
306                 local_args[1] = NULL;
307                 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
308                 rcode = do_bootm (cmdtp, 0, 1, local_args);
309         }
310          return rcode;
311 }
312
313 /*********************************************************************************
314  * scsi command intepreter
315  */
316 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
317 {
318         switch (argc) {
319     case 0:
320     case 1:     printf ("Usage:\n%s\n", cmdtp->usage);  return 1;
321     case 2:
322                         if (strncmp(argv[1],"res",3) == 0) {
323                                 printf("\nReset SCSI\n");
324                                 scsi_bus_reset();
325                                 scsi_scan(1);
326                                 return 0;
327                         }
328                         if (strncmp(argv[1],"inf",3) == 0) {
329                                 int i;
330                                 for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
331                                         if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
332                                                 continue; /* list only known devices */
333                                         printf ("SCSI dev. %d:  ", i);
334                                         dev_print(&scsi_dev_desc[i]);
335                                 }
336                                 return 0;
337                         }
338                         if (strncmp(argv[1],"dev",3) == 0) {
339                                 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
340                                         printf("\nno SCSI devices available\n");
341                                         return 1;
342                                 }
343                                 printf ("\n    Device %d: ", scsi_curr_dev);
344                                 dev_print(&scsi_dev_desc[scsi_curr_dev]);
345                                 return 0;
346                         }
347                         if (strncmp(argv[1],"scan",4) == 0) {
348                                 scsi_scan(1);
349                                 return 0;
350                         }
351                         if (strncmp(argv[1],"part",4) == 0) {
352                                 int dev, ok;
353                                 for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
354                                         if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
355                                                 ok++;
356                                                 if (dev)
357                                                         printf("\n");
358                                                 debug ("print_part of %x\n",dev);
359                                                         print_part(&scsi_dev_desc[dev]);
360                                         }
361                                 }
362                                 if (!ok)
363                                         printf("\nno SCSI devices available\n");
364                                 return 1;
365                         }
366                         printf ("Usage:\n%s\n", cmdtp->usage);
367                         return 1;
368         case 3:
369                         if (strncmp(argv[1],"dev",3) == 0) {
370                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
371                                 printf ("\nSCSI device %d: ", dev);
372                                 if (dev >= CFG_SCSI_MAX_DEVICE) {
373                                         printf("unknown device\n");
374                                         return 1;
375                                 }
376                                 printf ("\n    Device %d: ", dev);
377                                 dev_print(&scsi_dev_desc[dev]);
378                                 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
379                                         return 1;
380                                 }
381                                 scsi_curr_dev = dev;
382                                 printf("... is now current device\n");
383                                 return 0;
384                         }
385                         if (strncmp(argv[1],"part",4) == 0) {
386                                 int dev = (int)simple_strtoul(argv[2], NULL, 10);
387                                 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
388                                         print_part(&scsi_dev_desc[dev]);
389                                 }
390                                 else {
391                                         printf ("\nSCSI device %d not available\n", dev);
392                                 }
393                                 return 1;
394                         }
395                         printf ("Usage:\n%s\n", cmdtp->usage);
396                         return 1;
397     default:
398                         /* at least 4 args */
399                         if (strcmp(argv[1],"read") == 0) {
400                                 ulong addr = simple_strtoul(argv[2], NULL, 16);
401                                 ulong blk  = simple_strtoul(argv[3], NULL, 16);
402                                 ulong cnt  = simple_strtoul(argv[4], NULL, 16);
403                                 ulong n;
404                                 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
405                                                 scsi_curr_dev, blk, cnt);
406                                 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
407                                 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
408                                 return 0;
409                         }
410         } /* switch */
411         printf ("Usage:\n%s\n", cmdtp->usage);
412         return 1;
413 }
414
415 /****************************************************************************************
416  * scsi_read
417  */
418
419 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
420
421 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
422 {
423         ulong start,blks, buf_addr;
424         unsigned short smallblks;
425         ccb* pccb=(ccb *)&tempccb;
426         device&=0xff;
427         /* Setup  device
428          */
429         pccb->target=scsi_dev_desc[device].target;
430         pccb->lun=scsi_dev_desc[device].lun;
431         buf_addr=(unsigned long)buffer;
432         start=blknr;
433         blks=blkcnt;
434         debug ("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
435         do {
436                 pccb->pdata=(unsigned char *)buf_addr;
437                 if(blks>SCSI_MAX_READ_BLK) {
438                         pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
439                         smallblks=SCSI_MAX_READ_BLK;
440                         scsi_setup_read_ext(pccb,start,smallblks);
441                         start+=SCSI_MAX_READ_BLK;
442                         blks-=SCSI_MAX_READ_BLK;
443                 }
444                 else {
445                         pccb->datalen=scsi_dev_desc[device].blksz * blks;
446                         smallblks=(unsigned short) blks;
447                         scsi_setup_read_ext(pccb,start,smallblks);
448                         start+=blks;
449                         blks=0;
450                 }
451                 debug ("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
452                 if(scsi_exec(pccb)!=TRUE) {
453                         scsi_print_error(pccb);
454                         blkcnt-=blks;
455                         break;
456                 }
457                 buf_addr+=pccb->datalen;
458         } while(blks!=0);
459         debug ("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
460         return(blkcnt);
461 }
462
463 /* copy src to dest, skipping leading and trailing blanks
464  * and null terminate the string
465  */
466 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
467 {
468         int start,end;
469
470         start=0;
471         while(start<len) {
472                 if(src[start]!=' ')
473                         break;
474                 start++;
475         }
476         end=len-1;
477         while(end>start) {
478                 if(src[end]!=' ')
479                         break;
480                 end--;
481         }
482         for( ; start<=end; start++) {
483                 *dest++=src[start];
484         }
485         *dest='\0';
486 }
487
488
489 /* Trim trailing blanks, and NUL-terminate string
490  */
491 void scsi_trim_trail (unsigned char *str, unsigned int len)
492 {
493         unsigned char *p = str + len - 1;
494
495         while (len-- > 0) {
496                 *p-- = '\0';
497                 if (*p != ' ') {
498                         return;
499                 }
500         }
501 }
502
503
504 /************************************************************************************
505  * Some setup (fill-in) routines
506  */
507 void scsi_setup_test_unit_ready(ccb * pccb)
508 {
509         pccb->cmd[0]=SCSI_TST_U_RDY;
510         pccb->cmd[1]=pccb->lun<<5;
511         pccb->cmd[2]=0;
512         pccb->cmd[3]=0;
513         pccb->cmd[4]=0;
514         pccb->cmd[5]=0;
515         pccb->cmdlen=6;
516         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
517 }
518
519 void scsi_setup_read_capacity(ccb * pccb)
520 {
521         pccb->cmd[0]=SCSI_RD_CAPAC;
522         pccb->cmd[1]=pccb->lun<<5;
523         pccb->cmd[2]=0;
524         pccb->cmd[3]=0;
525         pccb->cmd[4]=0;
526         pccb->cmd[5]=0;
527         pccb->cmd[6]=0;
528         pccb->cmd[7]=0;
529         pccb->cmd[8]=0;
530         pccb->cmd[9]=0;
531         pccb->cmdlen=10;
532         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
533
534 }
535
536 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
537 {
538         pccb->cmd[0]=SCSI_READ10;
539         pccb->cmd[1]=pccb->lun<<5;
540         pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
541         pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
542         pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
543         pccb->cmd[5]=((unsigned char) (start))&0xff;
544         pccb->cmd[6]=0;
545         pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
546         pccb->cmd[8]=(unsigned char) blocks & 0xff;
547         pccb->cmd[6]=0;
548         pccb->cmdlen=10;
549         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
550         debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
551                 pccb->cmd[0],pccb->cmd[1],
552                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
553                 pccb->cmd[7],pccb->cmd[8]);
554 }
555
556 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
557 {
558         pccb->cmd[0]=SCSI_READ6;
559         pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
560         pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
561         pccb->cmd[3]=((unsigned char) (start))&0xff;
562         pccb->cmd[4]=(unsigned char) blocks & 0xff;
563         pccb->cmd[5]=0;
564         pccb->cmdlen=6;
565         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
566         debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
567                 pccb->cmd[0],pccb->cmd[1],
568                 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
569 }
570
571
572 void scsi_setup_inquiry(ccb * pccb)
573 {
574         pccb->cmd[0]=SCSI_INQUIRY;
575         pccb->cmd[1]=pccb->lun<<5;
576         pccb->cmd[2]=0;
577         pccb->cmd[3]=0;
578         if(pccb->datalen>255)
579                 pccb->cmd[4]=255;
580         else
581                 pccb->cmd[4]=(unsigned char)pccb->datalen;
582         pccb->cmd[5]=0;
583         pccb->cmdlen=6;
584         pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
585 }
586
587 #endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */