3 * Denis Peter, MPL AG Switzerland
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
32 #include <asm/processor.h>
37 #ifdef CONFIG_SCSI_DEV_LIST
38 #define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
40 #ifdef CONFIG_SCSI_SYM53C8XX
41 #define SCSI_VEND_ID 0x1000
42 #ifndef CONFIG_SCSI_DEV_ID
43 #define SCSI_DEV_ID 0x0001
45 #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
47 #elif defined CONFIG_SATA_ULI5288
49 #define SCSI_VEND_ID 0x10b9
50 #define SCSI_DEV_ID 0x5288
52 #elif !defined(CONFIG_SCSI_AHCI_PLAT)
53 #error no scsi device defined
55 #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
59 const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
61 static ccb tempccb; /* temporary scsi command buffer */
63 static unsigned char tempbuff[512]; /* temporary data buffer */
65 static int scsi_max_devs; /* number of highest available scsi device */
67 static int scsi_curr_dev; /* current device */
69 static block_dev_desc_t scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
71 /********************************************************************************
72 * forward declerations of some Setup Routines
74 void scsi_setup_test_unit_ready(ccb * pccb);
75 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
76 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
77 static void scsi_setup_write_ext(ccb *pccb, unsigned long start,
78 unsigned short blocks);
79 void scsi_setup_inquiry(ccb * pccb);
80 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
83 static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity,
84 unsigned long *blksz);
85 static ulong scsi_read(int device, lbaint_t blknr, lbaint_t blkcnt,
87 static ulong scsi_write(int device, lbaint_t blknr,
88 lbaint_t blkcnt, const void *buffer);
91 /*********************************************************************************
92 * (re)-scan the scsi bus and reports scsi device info
93 * to the user if mode = 1
95 void scsi_scan(int mode)
97 unsigned char i,perq,modi,lun;
100 ccb* pccb=(ccb *)&tempccb;
103 printf("scanning bus for devices...\n");
105 for(i=0;i<CONFIG_SYS_SCSI_MAX_DEVICE;i++) {
106 scsi_dev_desc[i].target=0xff;
107 scsi_dev_desc[i].lun=0xff;
108 scsi_dev_desc[i].lba=0;
109 scsi_dev_desc[i].blksz=0;
110 scsi_dev_desc[i].log2blksz =
111 LOG2_INVALID(typeof(scsi_dev_desc[i].log2blksz));
112 scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
113 scsi_dev_desc[i].vendor[0]=0;
114 scsi_dev_desc[i].product[0]=0;
115 scsi_dev_desc[i].revision[0]=0;
116 scsi_dev_desc[i].removable = false;
117 scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
118 scsi_dev_desc[i].dev=i;
119 scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
120 scsi_dev_desc[i].block_read=scsi_read;
121 scsi_dev_desc[i].block_write = scsi_write;
124 for(i=0;i<CONFIG_SYS_SCSI_MAX_SCSI_ID;i++) {
126 for(lun=0;lun<CONFIG_SYS_SCSI_MAX_LUN;lun++) {
128 pccb->pdata=(unsigned char *)&tempbuff;
130 scsi_setup_inquiry(pccb);
131 if (scsi_exec(pccb) != true) {
132 if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
133 debug ("Selection timeout ID %d\n",pccb->target);
134 continue; /* selection timeout => assuming no device present */
136 scsi_print_error(pccb);
141 if((perq & 0x1f)==0x1f) {
142 continue; /* skip unknown devices */
144 if((modi&0x80)==0x80) /* drive is removable */
145 scsi_dev_desc[scsi_max_devs].removable=true;
146 /* get info for this device */
147 scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
149 scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
151 scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
153 scsi_dev_desc[scsi_max_devs].target=pccb->target;
154 scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
157 scsi_setup_test_unit_ready(pccb);
158 if (scsi_exec(pccb) != true) {
159 if (scsi_dev_desc[scsi_max_devs].removable == true) {
160 scsi_dev_desc[scsi_max_devs].type=perq;
163 scsi_print_error(pccb);
166 if (scsi_read_capacity(pccb, &capacity, &blksz)) {
167 scsi_print_error(pccb);
170 scsi_dev_desc[scsi_max_devs].lba=capacity;
171 scsi_dev_desc[scsi_max_devs].blksz=blksz;
172 scsi_dev_desc[scsi_max_devs].log2blksz =
173 LOG2(scsi_dev_desc[scsi_max_devs].blksz);
174 scsi_dev_desc[scsi_max_devs].type=perq;
175 init_part(&scsi_dev_desc[scsi_max_devs]);
178 printf (" Device %d: ", scsi_max_devs);
179 dev_print(&scsi_dev_desc[scsi_max_devs]);
189 printf("Found %d device(s).\n", scsi_max_devs);
190 setenv_ulong("scsidevs", scsi_max_devs);
193 int scsi_get_disk_count(void)
195 return scsi_max_devs;
204 * Find a device from the list, this driver will support a single
207 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
208 /* get PCI Device ID */
209 busdevfunc = pci_find_device(scsi_device_list[i].vendor,
210 scsi_device_list[i].device,
212 if (busdevfunc != -1)
216 if (busdevfunc == -1) {
217 printf("Error: SCSI Controller(s) ");
218 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
220 scsi_device_list[i].vendor,
221 scsi_device_list[i].device);
223 printf("not found\n");
228 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
229 scsi_device_list[i].vendor,
230 scsi_device_list[i].device,
231 (busdevfunc >> 16) & 0xFF,
232 (busdevfunc >> 11) & 0x1F,
233 (busdevfunc >> 8) & 0x7);
236 scsi_low_level_init(busdevfunc);
241 #ifdef CONFIG_PARTITIONS
242 block_dev_desc_t * scsi_get_dev(int dev)
244 return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
248 /******************************************************************************
249 * scsi boot command intepreter. Derived from diskboot
251 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
253 return common_diskboot(cmdtp, "scsi", argc, argv);
256 /*********************************************************************************
257 * scsi command intepreter
259 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
264 return CMD_RET_USAGE;
267 if (strncmp(argv[1],"res",3) == 0) {
268 printf("\nReset SCSI\n");
273 if (strncmp(argv[1],"inf",3) == 0) {
275 for (i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; ++i) {
276 if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
277 continue; /* list only known devices */
278 printf ("SCSI dev. %d: ", i);
279 dev_print(&scsi_dev_desc[i]);
283 if (strncmp(argv[1],"dev",3) == 0) {
284 if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CONFIG_SYS_SCSI_MAX_DEVICE)) {
285 printf("\nno SCSI devices available\n");
288 printf ("\n Device %d: ", scsi_curr_dev);
289 dev_print(&scsi_dev_desc[scsi_curr_dev]);
292 if (strncmp(argv[1],"scan",4) == 0) {
296 if (strncmp(argv[1],"part",4) == 0) {
298 for (ok=0, dev=0; dev<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
299 if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
303 debug ("print_part of %x\n",dev);
304 print_part(&scsi_dev_desc[dev]);
308 printf("\nno SCSI devices available\n");
311 return CMD_RET_USAGE;
313 if (strncmp(argv[1],"dev",3) == 0) {
314 int dev = (int)simple_strtoul(argv[2], NULL, 10);
315 printf ("\nSCSI device %d: ", dev);
316 if (dev >= CONFIG_SYS_SCSI_MAX_DEVICE) {
317 printf("unknown device\n");
320 printf ("\n Device %d: ", dev);
321 dev_print(&scsi_dev_desc[dev]);
322 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
326 printf("... is now current device\n");
329 if (strncmp(argv[1],"part",4) == 0) {
330 int dev = (int)simple_strtoul(argv[2], NULL, 10);
331 if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
332 print_part(&scsi_dev_desc[dev]);
335 printf ("\nSCSI device %d not available\n", dev);
339 return CMD_RET_USAGE;
341 /* at least 4 args */
342 if (strcmp(argv[1],"read") == 0) {
343 ulong addr = simple_strtoul(argv[2], NULL, 16);
344 ulong blk = simple_strtoul(argv[3], NULL, 16);
345 ulong cnt = simple_strtoul(argv[4], NULL, 16);
347 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
348 scsi_curr_dev, blk, cnt);
349 n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
350 printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
352 } else if (strcmp(argv[1], "write") == 0) {
353 ulong addr = simple_strtoul(argv[2], NULL, 16);
354 ulong blk = simple_strtoul(argv[3], NULL, 16);
355 ulong cnt = simple_strtoul(argv[4], NULL, 16);
357 printf("\nSCSI write: device %d block # %ld, "
359 scsi_curr_dev, blk, cnt);
360 n = scsi_write(scsi_curr_dev, blk, cnt,
362 printf("%ld blocks written: %s\n", n,
363 (n == cnt) ? "OK" : "ERROR");
367 return CMD_RET_USAGE;
370 /****************************************************************************************
374 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
376 static ulong scsi_read(int device, lbaint_t blknr, lbaint_t blkcnt,
379 lbaint_t start, blks;
381 unsigned short smallblks;
382 ccb* pccb=(ccb *)&tempccb;
386 pccb->target=scsi_dev_desc[device].target;
387 pccb->lun=scsi_dev_desc[device].lun;
388 buf_addr=(unsigned long)buffer;
391 debug("\nscsi_read: dev %d startblk " LBAF
392 ", blccnt " LBAF " buffer %lx\n",
393 device, start, blks, (unsigned long)buffer);
395 pccb->pdata=(unsigned char *)buf_addr;
396 if(blks>SCSI_MAX_READ_BLK) {
397 pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
398 smallblks=SCSI_MAX_READ_BLK;
399 scsi_setup_read_ext(pccb,start,smallblks);
400 start+=SCSI_MAX_READ_BLK;
401 blks-=SCSI_MAX_READ_BLK;
404 pccb->datalen=scsi_dev_desc[device].blksz * blks;
405 smallblks=(unsigned short) blks;
406 scsi_setup_read_ext(pccb,start,smallblks);
410 debug("scsi_read_ext: startblk " LBAF
411 ", blccnt %x buffer %lx\n",
412 start, smallblks, buf_addr);
413 if (scsi_exec(pccb) != true) {
414 scsi_print_error(pccb);
418 buf_addr+=pccb->datalen;
420 debug("scsi_read_ext: end startblk " LBAF
421 ", blccnt %x buffer %lx\n", start, smallblks, buf_addr);
425 /*******************************************************************************
429 /* Almost the maximum amount of the scsi_ext command.. */
430 #define SCSI_MAX_WRITE_BLK 0xFFFF
432 static ulong scsi_write(int device, lbaint_t blknr,
433 lbaint_t blkcnt, const void *buffer)
435 lbaint_t start, blks;
437 unsigned short smallblks;
438 ccb* pccb = (ccb *)&tempccb;
442 pccb->target = scsi_dev_desc[device].target;
443 pccb->lun = scsi_dev_desc[device].lun;
444 buf_addr = (unsigned long)buffer;
447 debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
448 __func__, device, start, blks, (unsigned long)buffer);
450 pccb->pdata = (unsigned char *)buf_addr;
451 if (blks > SCSI_MAX_WRITE_BLK) {
452 pccb->datalen = (scsi_dev_desc[device].blksz *
454 smallblks = SCSI_MAX_WRITE_BLK;
455 scsi_setup_write_ext(pccb, start, smallblks);
456 start += SCSI_MAX_WRITE_BLK;
457 blks -= SCSI_MAX_WRITE_BLK;
459 pccb->datalen = scsi_dev_desc[device].blksz * blks;
460 smallblks = (unsigned short)blks;
461 scsi_setup_write_ext(pccb, start, smallblks);
465 debug("%s: startblk " LBAF ", blccnt %x buffer %lx\n",
466 __func__, start, smallblks, buf_addr);
467 if (scsi_exec(pccb) != true) {
468 scsi_print_error(pccb);
472 buf_addr += pccb->datalen;
474 debug("%s: end startblk " LBAF ", blccnt %x buffer %lx\n",
475 __func__, start, smallblks, buf_addr);
479 /* copy src to dest, skipping leading and trailing blanks
480 * and null terminate the string
482 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
498 for( ; start<=end; start++) {
505 /* Trim trailing blanks, and NUL-terminate string
507 void scsi_trim_trail (unsigned char *str, unsigned int len)
509 unsigned char *p = str + len - 1;
519 int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
523 memset(pccb->cmd, 0, sizeof(pccb->cmd));
524 pccb->cmd[0] = SCSI_RD_CAPAC10;
525 pccb->cmd[1] = pccb->lun << 5;
527 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
530 if (scsi_exec(pccb) != true)
533 *capacity = ((lbaint_t)pccb->pdata[0] << 24) |
534 ((lbaint_t)pccb->pdata[1] << 16) |
535 ((lbaint_t)pccb->pdata[2] << 8) |
536 ((lbaint_t)pccb->pdata[3]);
538 if (*capacity != 0xffffffff) {
539 /* Read capacity (10) was sufficient for this drive. */
540 *blksz = ((unsigned long)pccb->pdata[4] << 24) |
541 ((unsigned long)pccb->pdata[5] << 16) |
542 ((unsigned long)pccb->pdata[6] << 8) |
543 ((unsigned long)pccb->pdata[7]);
547 /* Read capacity (10) was insufficient. Use read capacity (16). */
549 memset(pccb->cmd, 0, sizeof(pccb->cmd));
550 pccb->cmd[0] = SCSI_RD_CAPAC16;
553 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
556 if (scsi_exec(pccb) != true)
559 *capacity = ((uint64_t)pccb->pdata[0] << 56) |
560 ((uint64_t)pccb->pdata[1] << 48) |
561 ((uint64_t)pccb->pdata[2] << 40) |
562 ((uint64_t)pccb->pdata[3] << 32) |
563 ((uint64_t)pccb->pdata[4] << 24) |
564 ((uint64_t)pccb->pdata[5] << 16) |
565 ((uint64_t)pccb->pdata[6] << 8) |
566 ((uint64_t)pccb->pdata[7]);
568 *blksz = ((uint64_t)pccb->pdata[8] << 56) |
569 ((uint64_t)pccb->pdata[9] << 48) |
570 ((uint64_t)pccb->pdata[10] << 40) |
571 ((uint64_t)pccb->pdata[11] << 32) |
572 ((uint64_t)pccb->pdata[12] << 24) |
573 ((uint64_t)pccb->pdata[13] << 16) |
574 ((uint64_t)pccb->pdata[14] << 8) |
575 ((uint64_t)pccb->pdata[15]);
581 /************************************************************************************
582 * Some setup (fill-in) routines
584 void scsi_setup_test_unit_ready(ccb * pccb)
586 pccb->cmd[0]=SCSI_TST_U_RDY;
587 pccb->cmd[1]=pccb->lun<<5;
593 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
596 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
598 pccb->cmd[0]=SCSI_READ10;
599 pccb->cmd[1]=pccb->lun<<5;
600 pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
601 pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
602 pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
603 pccb->cmd[5]=((unsigned char) (start))&0xff;
605 pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
606 pccb->cmd[8]=(unsigned char) blocks & 0xff;
609 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
610 debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
611 pccb->cmd[0],pccb->cmd[1],
612 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
613 pccb->cmd[7],pccb->cmd[8]);
616 void scsi_setup_write_ext(ccb *pccb, unsigned long start, unsigned short blocks)
618 pccb->cmd[0] = SCSI_WRITE10;
619 pccb->cmd[1] = pccb->lun << 5;
620 pccb->cmd[2] = ((unsigned char) (start>>24)) & 0xff;
621 pccb->cmd[3] = ((unsigned char) (start>>16)) & 0xff;
622 pccb->cmd[4] = ((unsigned char) (start>>8)) & 0xff;
623 pccb->cmd[5] = ((unsigned char) (start)) & 0xff;
625 pccb->cmd[7] = ((unsigned char) (blocks>>8)) & 0xff;
626 pccb->cmd[8] = (unsigned char)blocks & 0xff;
629 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
630 debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
632 pccb->cmd[0], pccb->cmd[1],
633 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
634 pccb->cmd[7], pccb->cmd[8]);
637 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
639 pccb->cmd[0]=SCSI_READ6;
640 pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
641 pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
642 pccb->cmd[3]=((unsigned char) (start))&0xff;
643 pccb->cmd[4]=(unsigned char) blocks & 0xff;
646 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
647 debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
648 pccb->cmd[0],pccb->cmd[1],
649 pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
653 void scsi_setup_inquiry(ccb * pccb)
655 pccb->cmd[0]=SCSI_INQUIRY;
656 pccb->cmd[1]=pccb->lun<<5;
659 if(pccb->datalen>255)
662 pccb->cmd[4]=(unsigned char)pccb->datalen;
665 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
672 "reset - reset SCSI controller\n"
673 "scsi info - show available SCSI devices\n"
674 "scsi scan - (re-)scan SCSI bus\n"
675 "scsi device [dev] - show or set current device\n"
676 "scsi part [dev] - print partition table of one or all SCSI devices\n"
677 "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
678 " to memory address `addr'\n"
679 "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
680 " `blk#' from memory address `addr'"
684 scsiboot, 3, 1, do_scsiboot,
685 "boot from SCSI device",