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,
33 #include <asm/processor.h>
43 #define PRINTF(fmt,args...) printf (fmt ,##args)
45 #define PRINTF(fmt,args...)
48 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
50 #ifdef CONFIG_SCSI_SYM53C8XX
51 #define SCSI_VEND_ID 0x1000
52 #ifndef CONFIG_SCSI_DEV_ID
53 #define SCSI_DEV_ID 0x0001
55 #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
58 #error CONFIG_SCSI_SYM53C8XX must be defined
62 static ccb tempccb; /* temporary scsi command buffer */
64 static unsigned char tempbuff[512]; /* temporary data buffer */
66 static int scsi_max_devs; /* number of highest available scsi device */
68 static int scsi_curr_dev; /* current device */
70 static block_dev_desc_t scsi_dev_desc[CFG_SCSI_MAX_DEVICE];
72 /********************************************************************************
73 * forward declerations of some Setup Routines
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);
83 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer);
86 /*********************************************************************************
87 * (re)-scan the scsi bus and reports scsi device info
88 * to the user if mode = 1
90 void scsi_scan(int mode)
92 unsigned char i,perq,modi,lun;
93 unsigned long capacity,blksz;
94 ccb* pccb=(ccb *)&tempccb;
97 printf("scanning bus for devices...\n");
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;
115 for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
117 for(lun=0;lun<CFG_SCSI_MAX_LUN;lun++) {
119 pccb->pdata=(unsigned char *)&tempbuff;
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 */
127 scsi_print_error(pccb);
132 if((perq & 0x1f)==0x1f) {
133 continue; /* skip unknown devices */
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;
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;
151 scsi_print_error(pccb);
155 scsi_setup_read_capacity(pccb);
156 if(scsi_exec(pccb)!=TRUE) {
157 scsi_print_error(pccb);
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]);
170 printf (" Device %d: ", scsi_max_devs);
171 dev_print(&scsi_dev_desc[scsi_max_devs]);
187 busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
189 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
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);
197 scsi_low_level_init(busdevfunc);
201 block_dev_desc_t * scsi_get_dev(int dev)
203 return((block_dev_desc_t *)&scsi_dev_desc[dev]);
207 /******************************************************************************
208 * scsi boot command intepreter. Derived from diskboot
210 int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
212 char *boot_device = NULL;
217 disk_partition_t info;
223 addr = CFG_LOAD_ADDR;
224 boot_device = getenv ("bootdevice");
227 addr = simple_strtoul(argv[1], NULL, 16);
228 boot_device = getenv ("bootdevice");
231 addr = simple_strtoul(argv[1], NULL, 16);
232 boot_device = argv[2];
235 printf ("Usage:\n%s\n", cmdtp->usage);
240 puts ("\n** No boot device **\n");
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);
253 puts ("\n** Invalid boot device, use `dev[:part]' **\n");
256 part = simple_strtoul(++ep, NULL, 16);
258 if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
259 printf("error reading partinfo\n");
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",
270 printf ("\nLoading from SCSI device %d, partition %d: "
271 "Name: %.32s Type: %.32s\n",
272 dev, part, info.name, info.type);
274 PRINTF ("First Block: %ld, # of blocks: %ld, Block Size: %ld\n",
275 info.start, info.size, info.blksz);
277 if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
278 printf ("** Read error on %d:%d\n", dev, part);
282 hdr = (image_header_t *)addr;
284 if (hdr->ih_magic == IH_MAGIC) {
286 print_image_hdr (hdr);
287 cnt = (hdr->ih_size + sizeof(image_header_t));
288 cnt += info.blksz - 1;
292 printf("\n** Bad Magic Number **\n");
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);
301 /* Loading ok, update default load address */
304 flush_cache (addr, (cnt+1)*info.blksz);
306 /* Check if we should attempt an auto-start */
307 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
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);
318 /*********************************************************************************
319 * scsi command intepreter
321 int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
325 case 1: printf ("Usage:\n%s\n", cmdtp->usage); return 1;
327 if (strncmp(argv[1],"res",3) == 0) {
328 printf("\nReset SCSI\n");
333 if (strncmp(argv[1],"inf",3) == 0) {
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]);
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");
348 printf ("\n Device %d: ", scsi_curr_dev);
349 dev_print(&scsi_dev_desc[scsi_curr_dev]);
352 if (strncmp(argv[1],"scan",4) == 0) {
356 if (strncmp(argv[1],"part",4) == 0) {
358 for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
359 if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
363 PRINTF("print_part of %x\n",dev);
364 print_part(&scsi_dev_desc[dev]);
368 printf("\nno SCSI devices available\n");
371 printf ("Usage:\n%s\n", cmdtp->usage);
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");
381 printf ("\n Device %d: ", dev);
382 dev_print(&scsi_dev_desc[dev]);
383 if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
387 printf("... is now current device\n");
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]);
396 printf ("\nSCSI device %d not available\n", dev);
400 printf ("Usage:\n%s\n", cmdtp->usage);
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);
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");
416 printf ("Usage:\n%s\n", cmdtp->usage);
420 /****************************************************************************************
424 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
426 ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
428 ulong start,blks, buf_addr;
429 unsigned short smallblks;
430 ccb* pccb=(ccb *)&tempccb;
434 pccb->target=scsi_dev_desc[device].target;
435 pccb->lun=scsi_dev_desc[device].lun;
436 buf_addr=(unsigned long)buffer;
439 PRINTF("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
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;
450 pccb->datalen=scsi_dev_desc[device].blksz * blks;
451 smallblks=(unsigned short) blks;
452 scsi_setup_read_ext(pccb,start,smallblks);
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);
462 buf_addr+=pccb->datalen;
464 PRINTF("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
468 /* copy src to dest, skipping leading and trailing blanks
469 * and null terminate the string
471 void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
487 for( ; start<=end; start++) {
494 /* Trim trailing blanks, and NUL-terminate string
496 void scsi_trim_trail (unsigned char *str, unsigned int len)
498 unsigned char *p = str + len - 1;
509 /************************************************************************************
510 * Some setup (fill-in) routines
512 void scsi_setup_test_unit_ready(ccb * pccb)
514 pccb->cmd[0]=SCSI_TST_U_RDY;
515 pccb->cmd[1]=pccb->lun<<5;
521 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
524 void scsi_setup_read_capacity(ccb * pccb)
526 pccb->cmd[0]=SCSI_RD_CAPAC;
527 pccb->cmd[1]=pccb->lun<<5;
537 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
541 void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
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;
550 pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
551 pccb->cmd[8]=(unsigned char) blocks & 0xff;
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]);
561 void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
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;
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]);
577 void scsi_setup_inquiry(ccb * pccb)
579 pccb->cmd[0]=SCSI_INQUIRY;
580 pccb->cmd[1]=pccb->lun<<5;
583 if(pccb->datalen>255)
586 pccb->cmd[4]=(unsigned char)pccb->datalen;
589 pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
592 #endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */