blob: 9b5c69b32b4712510e3f7d060ba62735111b4adb [file] [log] [blame]
wdenke887afc2002-08-27 09:44:07 +00001/*
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
63static ccb tempccb; /* temporary scsi command buffer */
64
65static unsigned char tempbuff[512]; /* temporary data buffer */
66
67static int scsi_max_devs; /* number of highest available scsi device */
68
69static int scsi_curr_dev; /* current device */
70
71static block_dev_desc_t scsi_dev_desc[CFG_SCSI_MAX_DEVICE];
72
73/********************************************************************************
74 * forward declerations of some Setup Routines
75 */
76void scsi_setup_test_unit_ready(ccb * pccb);
77void scsi_setup_read_capacity(ccb * pccb);
78void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
79void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
80void scsi_setup_inquiry(ccb * pccb);
81void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
82
83
84ulong 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 */
91void 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]);
169removable:
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
185void 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
203block_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 */
213int 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 printf ("\n** Invalid partition type \"%.32s\""
267 " (expect \"" BOOT_PART_TYPE "\")\n",
268 info.type);
269 return 1;
270 }
271
272 printf ("\nLoading from SCSI device %d, partition %d: "
273 "Name: %.32s Type: %.32s\n",
274 dev, part, info.name, info.type);
275
276 PRINTF ("First Block: %ld, # of blocks: %ld, Block Size: %ld\n",
277 info.start, info.size, info.blksz);
278
279 if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
280 printf ("** Read error on %d:%d\n", dev, part);
281 return 1;
282 }
283
284 hdr = (image_header_t *)addr;
285
286 if (hdr->ih_magic == IH_MAGIC) {
287
288 print_image_hdr (hdr);
289 cnt = (hdr->ih_size + sizeof(image_header_t));
290 cnt += info.blksz - 1;
291 cnt /= info.blksz;
292 cnt -= 1;
293 } else {
294 printf("\n** Bad Magic Number **\n");
295 return 1;
296 }
297
298 if (scsi_read (dev, info.start+1, cnt,
299 (ulong *)(addr+info.blksz)) != cnt) {
300 printf ("** Read error on %d:%d\n", dev, part);
301 return 1;
302 }
303 /* Loading ok, update default load address */
304 load_addr = addr;
305
306 flush_cache (addr, (cnt+1)*info.blksz);
307
308 /* Check if we should attempt an auto-start */
309 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
310 char *local_args[2];
311 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
312 local_args[0] = argv[0];
313 local_args[1] = NULL;
314 printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
315 rcode = do_bootm (cmdtp, 0, 1, local_args);
316 }
317 return rcode;
318}
319
320/*********************************************************************************
321 * scsi command intepreter
322 */
323int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
324{
325 switch (argc) {
326 case 0:
327 case 1: printf ("Usage:\n%s\n", cmdtp->usage); return 1;
328 case 2:
329 if (strncmp(argv[1],"res",3) == 0) {
330 printf("\nReset SCSI\n");
331 scsi_bus_reset();
332 scsi_scan(1);
333 return 0;
334 }
335 if (strncmp(argv[1],"inf",3) == 0) {
336 int i;
337 for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
338 if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
339 continue; /* list only known devices */
340 printf ("SCSI dev. %d: ", i);
341 dev_print(&scsi_dev_desc[i]);
342 }
343 return 0;
344 }
345 if (strncmp(argv[1],"dev",3) == 0) {
346 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
347 printf("\nno SCSI devices available\n");
348 return 1;
349 }
350 printf ("\n Device %d: ", scsi_curr_dev);
351 dev_print(&scsi_dev_desc[scsi_curr_dev]);
352 return 0;
353 }
354 if (strncmp(argv[1],"scan",4) == 0) {
355 scsi_scan(1);
356 return 0;
357 }
358 if (strncmp(argv[1],"part",4) == 0) {
359 int dev, ok;
360 for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
361 if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
362 ok++;
363 if (dev)
364 printf("\n");
365 PRINTF("print_part of %x\n",dev);
366 print_part(&scsi_dev_desc[dev]);
367 }
368 }
369 if (!ok)
370 printf("\nno SCSI devices available\n");
371 return 1;
372 }
373 printf ("Usage:\n%s\n", cmdtp->usage);
374 return 1;
375 case 3:
376 if (strncmp(argv[1],"dev",3) == 0) {
377 int dev = (int)simple_strtoul(argv[2], NULL, 10);
378 printf ("\nSCSI device %d: ", dev);
379 if (dev >= CFG_SCSI_MAX_DEVICE) {
380 printf("unknown device\n");
381 return 1;
382 }
383 printf ("\n Device %d: ", dev);
384 dev_print(&scsi_dev_desc[dev]);
385 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
386 return 1;
387 }
388 scsi_curr_dev = dev;
389 printf("... is now current device\n");
390 return 0;
391 }
392 if (strncmp(argv[1],"part",4) == 0) {
393 int dev = (int)simple_strtoul(argv[2], NULL, 10);
394 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
395 print_part(&scsi_dev_desc[dev]);
396 }
397 else {
398 printf ("\nSCSI device %d not available\n", dev);
399 }
400 return 1;
401 }
402 printf ("Usage:\n%s\n", cmdtp->usage);
403 return 1;
404 default:
405 /* at least 4 args */
406 if (strcmp(argv[1],"read") == 0) {
407 ulong addr = simple_strtoul(argv[2], NULL, 16);
408 ulong blk = simple_strtoul(argv[3], NULL, 16);
409 ulong cnt = simple_strtoul(argv[4], NULL, 16);
410 ulong n;
411 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
412 scsi_curr_dev, blk, cnt);
413 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
414 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
415 return 0;
416 }
417 } /* switch */
418 printf ("Usage:\n%s\n", cmdtp->usage);
419 return 1;
420}
421
422/****************************************************************************************
423 * scsi_read
424 */
425
426#define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
427
428ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
429{
430 ulong start,blks, buf_addr;
431 unsigned short smallblks;
432 ccb* pccb=(ccb *)&tempccb;
433 device&=0xff;
434 /* Setup device
435 */
436 pccb->target=scsi_dev_desc[device].target;
437 pccb->lun=scsi_dev_desc[device].lun;
438 buf_addr=(unsigned long)buffer;
439 start=blknr;
440 blks=blkcnt;
441 PRINTF("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
442 do {
443 pccb->pdata=(unsigned char *)buf_addr;
444 if(blks>SCSI_MAX_READ_BLK) {
445 pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
446 smallblks=SCSI_MAX_READ_BLK;
447 scsi_setup_read_ext(pccb,start,smallblks);
448 start+=SCSI_MAX_READ_BLK;
449 blks-=SCSI_MAX_READ_BLK;
450 }
451 else {
452 pccb->datalen=scsi_dev_desc[device].blksz * blks;
453 smallblks=(unsigned short) blks;
454 scsi_setup_read_ext(pccb,start,smallblks);
455 start+=blks;
456 blks=0;
457 }
458 PRINTF("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
459 if(scsi_exec(pccb)!=TRUE) {
460 scsi_print_error(pccb);
461 blkcnt-=blks;
462 break;
463 }
464 buf_addr+=pccb->datalen;
465 } while(blks!=0);
466 PRINTF("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
467 return(blkcnt);
468}
469
470/* copy src to dest, skipping leading and trailing blanks
471 * and null terminate the string
472 */
473void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
474{
475 int start,end;
476
477 start=0;
478 while(start<len) {
479 if(src[start]!=' ')
480 break;
481 start++;
482 }
483 end=len-1;
484 while(end>start) {
485 if(src[end]!=' ')
486 break;
487 end--;
488 }
489 for( ; start<=end; start++) {
490 *dest++=src[start];
491 }
492 *dest='\0';
493}
494
495
496
497/* Trim trailing blanks, and NUL-terminate string
498 */
499void scsi_trim_trail (unsigned char *str, unsigned int len)
500{
501 unsigned char *p = str + len - 1;
502
503 while (len-- > 0) {
504 *p-- = '\0';
505 if (*p != ' ') {
506 return;
507 }
508 }
509}
510
511
512/************************************************************************************
513 * Some setup (fill-in) routines
514 */
515void scsi_setup_test_unit_ready(ccb * pccb)
516{
517 pccb->cmd[0]=SCSI_TST_U_RDY;
518 pccb->cmd[1]=pccb->lun<<5;
519 pccb->cmd[2]=0;
520 pccb->cmd[3]=0;
521 pccb->cmd[4]=0;
522 pccb->cmd[5]=0;
523 pccb->cmdlen=6;
524 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
525}
526
527void scsi_setup_read_capacity(ccb * pccb)
528{
529 pccb->cmd[0]=SCSI_RD_CAPAC;
530 pccb->cmd[1]=pccb->lun<<5;
531 pccb->cmd[2]=0;
532 pccb->cmd[3]=0;
533 pccb->cmd[4]=0;
534 pccb->cmd[5]=0;
535 pccb->cmd[6]=0;
536 pccb->cmd[7]=0;
537 pccb->cmd[8]=0;
538 pccb->cmd[9]=0;
539 pccb->cmdlen=10;
540 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
541
542}
543
544void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
545{
546 pccb->cmd[0]=SCSI_READ10;
547 pccb->cmd[1]=pccb->lun<<5;
548 pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
549 pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
550 pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
551 pccb->cmd[5]=((unsigned char) (start))&0xff;
552 pccb->cmd[6]=0;
553 pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
554 pccb->cmd[8]=(unsigned char) blocks & 0xff;
555 pccb->cmd[6]=0;
556 pccb->cmdlen=10;
557 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
558 PRINTF("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
559 pccb->cmd[0],pccb->cmd[1],
560 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
561 pccb->cmd[7],pccb->cmd[8]);
562}
563
564void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
565{
566 pccb->cmd[0]=SCSI_READ6;
567 pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
568 pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
569 pccb->cmd[3]=((unsigned char) (start))&0xff;
570 pccb->cmd[4]=(unsigned char) blocks & 0xff;
571 pccb->cmd[5]=0;
572 pccb->cmdlen=6;
573 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
574 PRINTF("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
575 pccb->cmd[0],pccb->cmd[1],
576 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
577}
578
579
580void scsi_setup_inquiry(ccb * pccb)
581{
582 pccb->cmd[0]=SCSI_INQUIRY;
583 pccb->cmd[1]=pccb->lun<<5;
584 pccb->cmd[2]=0;
585 pccb->cmd[3]=0;
586 if(pccb->datalen>255)
587 pccb->cmd[4]=255;
588 else
589 pccb->cmd[4]=(unsigned char)pccb->datalen;
590 pccb->cmd[5]=0;
591 pccb->cmdlen=6;
592 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
593}
594
595#endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */
596
597