3 * Denis Peter, MPL AG Switzerland
5 * SPDX-License-Identifier: GPL-2.0+
13 #include <asm/processor.h>
18 #ifdef CONFIG_SCSI_DEV_LIST
19 #define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
21 #ifdef CONFIG_SCSI_SYM53C8XX
22 #define SCSI_VEND_ID 0x1000
23 #ifndef CONFIG_SCSI_DEV_ID
24 #define SCSI_DEV_ID 0x0001
26 #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
28 #elif defined CONFIG_SATA_ULI5288
30 #define SCSI_VEND_ID 0x10b9
31 #define SCSI_DEV_ID 0x5288
33 #elif !defined(CONFIG_SCSI_AHCI_PLAT)
34 #error no scsi device defined
36 #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
40 const struct pci_device_id scsi_device_list
[] = { SCSI_DEV_LIST
};
42 static ccb tempccb
; /* temporary scsi command buffer */
44 static unsigned char tempbuff
[512]; /* temporary data buffer */
46 static int scsi_max_devs
; /* number of highest available scsi device */
48 static int scsi_curr_dev
; /* current device */
50 static block_dev_desc_t scsi_dev_desc
[CONFIG_SYS_SCSI_MAX_DEVICE
];
52 /********************************************************************************
53 * forward declerations of some Setup Routines
55 void scsi_setup_test_unit_ready(ccb
* pccb
);
56 void scsi_setup_read6(ccb
* pccb
, unsigned long start
, unsigned short blocks
);
57 void scsi_setup_read_ext(ccb
* pccb
, unsigned long start
, unsigned short blocks
);
58 static void scsi_setup_write_ext(ccb
*pccb
, unsigned long start
,
59 unsigned short blocks
);
60 void scsi_setup_inquiry(ccb
* pccb
);
61 void scsi_ident_cpy (unsigned char *dest
, unsigned char *src
, unsigned int len
);
64 static int scsi_read_capacity(ccb
*pccb
, lbaint_t
*capacity
,
65 unsigned long *blksz
);
66 static ulong
scsi_read(int device
, lbaint_t blknr
, lbaint_t blkcnt
,
68 static ulong
scsi_write(int device
, lbaint_t blknr
,
69 lbaint_t blkcnt
, const void *buffer
);
72 /*********************************************************************************
73 * (re)-scan the scsi bus and reports scsi device info
74 * to the user if mode = 1
76 void scsi_scan(int mode
)
78 unsigned char i
,perq
,modi
,lun
;
81 ccb
* pccb
=(ccb
*)&tempccb
;
84 printf("scanning bus for devices...\n");
86 for(i
=0;i
<CONFIG_SYS_SCSI_MAX_DEVICE
;i
++) {
87 scsi_dev_desc
[i
].target
=0xff;
88 scsi_dev_desc
[i
].lun
=0xff;
89 scsi_dev_desc
[i
].lba
=0;
90 scsi_dev_desc
[i
].blksz
=0;
91 scsi_dev_desc
[i
].log2blksz
=
92 LOG2_INVALID(typeof(scsi_dev_desc
[i
].log2blksz
));
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 scsi_dev_desc
[i
].block_write
= scsi_write
;
105 for(i
=0;i
<CONFIG_SYS_SCSI_MAX_SCSI_ID
;i
++) {
107 for(lun
=0;lun
<CONFIG_SYS_SCSI_MAX_LUN
;lun
++) {
109 pccb
->pdata
=(unsigned char *)&tempbuff
;
111 scsi_setup_inquiry(pccb
);
112 if (scsi_exec(pccb
) != true) {
113 if(pccb
->contr_stat
==SCSI_SEL_TIME_OUT
) {
114 debug ("Selection timeout ID %d\n",pccb
->target
);
115 continue; /* selection timeout => assuming no device present */
117 scsi_print_error(pccb
);
122 if((perq
& 0x1f)==0x1f) {
123 continue; /* skip unknown devices */
125 if((modi
&0x80)==0x80) /* drive is removable */
126 scsi_dev_desc
[scsi_max_devs
].removable
=true;
127 /* get info for this device */
128 scsi_ident_cpy((unsigned char *)&scsi_dev_desc
[scsi_max_devs
].vendor
[0],
130 scsi_ident_cpy((unsigned char *)&scsi_dev_desc
[scsi_max_devs
].product
[0],
132 scsi_ident_cpy((unsigned char *)&scsi_dev_desc
[scsi_max_devs
].revision
[0],
134 scsi_dev_desc
[scsi_max_devs
].target
=pccb
->target
;
135 scsi_dev_desc
[scsi_max_devs
].lun
=pccb
->lun
;
138 scsi_setup_test_unit_ready(pccb
);
139 if (scsi_exec(pccb
) != true) {
140 if (scsi_dev_desc
[scsi_max_devs
].removable
== true) {
141 scsi_dev_desc
[scsi_max_devs
].type
=perq
;
144 scsi_print_error(pccb
);
147 if (scsi_read_capacity(pccb
, &capacity
, &blksz
)) {
148 scsi_print_error(pccb
);
151 scsi_dev_desc
[scsi_max_devs
].lba
=capacity
;
152 scsi_dev_desc
[scsi_max_devs
].blksz
=blksz
;
153 scsi_dev_desc
[scsi_max_devs
].log2blksz
=
154 LOG2(scsi_dev_desc
[scsi_max_devs
].blksz
);
155 scsi_dev_desc
[scsi_max_devs
].type
=perq
;
156 init_part(&scsi_dev_desc
[scsi_max_devs
]);
159 printf (" Device %d: ", scsi_max_devs
);
160 dev_print(&scsi_dev_desc
[scsi_max_devs
]);
170 printf("Found %d device(s).\n", scsi_max_devs
);
171 setenv_ulong("scsidevs", scsi_max_devs
);
174 int scsi_get_disk_count(void)
176 return scsi_max_devs
;
185 * Find a device from the list, this driver will support a single
188 for (i
= 0; i
< ARRAY_SIZE(scsi_device_list
); i
++) {
189 /* get PCI Device ID */
190 busdevfunc
= pci_find_device(scsi_device_list
[i
].vendor
,
191 scsi_device_list
[i
].device
,
193 if (busdevfunc
!= -1)
197 if (busdevfunc
== -1) {
198 printf("Error: SCSI Controller(s) ");
199 for (i
= 0; i
< ARRAY_SIZE(scsi_device_list
); i
++) {
201 scsi_device_list
[i
].vendor
,
202 scsi_device_list
[i
].device
);
204 printf("not found\n");
209 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
210 scsi_device_list
[i
].vendor
,
211 scsi_device_list
[i
].device
,
212 (busdevfunc
>> 16) & 0xFF,
213 (busdevfunc
>> 11) & 0x1F,
214 (busdevfunc
>> 8) & 0x7);
217 scsi_low_level_init(busdevfunc
);
222 #ifdef CONFIG_PARTITIONS
223 block_dev_desc_t
* scsi_get_dev(int dev
)
225 return (dev
< CONFIG_SYS_SCSI_MAX_DEVICE
) ? &scsi_dev_desc
[dev
] : NULL
;
229 /******************************************************************************
230 * scsi boot command intepreter. Derived from diskboot
232 int do_scsiboot (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
234 return common_diskboot(cmdtp
, "scsi", argc
, argv
);
237 /*********************************************************************************
238 * scsi command intepreter
240 int do_scsi (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
245 return CMD_RET_USAGE
;
248 if (strncmp(argv
[1],"res",3) == 0) {
249 printf("\nReset SCSI\n");
254 if (strncmp(argv
[1],"inf",3) == 0) {
256 for (i
=0; i
<CONFIG_SYS_SCSI_MAX_DEVICE
; ++i
) {
257 if(scsi_dev_desc
[i
].type
==DEV_TYPE_UNKNOWN
)
258 continue; /* list only known devices */
259 printf ("SCSI dev. %d: ", i
);
260 dev_print(&scsi_dev_desc
[i
]);
264 if (strncmp(argv
[1],"dev",3) == 0) {
265 if ((scsi_curr_dev
< 0) || (scsi_curr_dev
>= CONFIG_SYS_SCSI_MAX_DEVICE
)) {
266 printf("\nno SCSI devices available\n");
269 printf ("\n Device %d: ", scsi_curr_dev
);
270 dev_print(&scsi_dev_desc
[scsi_curr_dev
]);
273 if (strncmp(argv
[1],"scan",4) == 0) {
277 if (strncmp(argv
[1],"part",4) == 0) {
279 for (ok
=0, dev
=0; dev
<CONFIG_SYS_SCSI_MAX_DEVICE
; ++dev
) {
280 if (scsi_dev_desc
[dev
].type
!=DEV_TYPE_UNKNOWN
) {
284 debug ("print_part of %x\n",dev
);
285 print_part(&scsi_dev_desc
[dev
]);
289 printf("\nno SCSI devices available\n");
292 return CMD_RET_USAGE
;
294 if (strncmp(argv
[1],"dev",3) == 0) {
295 int dev
= (int)simple_strtoul(argv
[2], NULL
, 10);
296 printf ("\nSCSI device %d: ", dev
);
297 if (dev
>= CONFIG_SYS_SCSI_MAX_DEVICE
) {
298 printf("unknown device\n");
301 printf ("\n Device %d: ", dev
);
302 dev_print(&scsi_dev_desc
[dev
]);
303 if(scsi_dev_desc
[dev
].type
== DEV_TYPE_UNKNOWN
) {
307 printf("... is now current device\n");
310 if (strncmp(argv
[1],"part",4) == 0) {
311 int dev
= (int)simple_strtoul(argv
[2], NULL
, 10);
312 if(scsi_dev_desc
[dev
].type
!= DEV_TYPE_UNKNOWN
) {
313 print_part(&scsi_dev_desc
[dev
]);
316 printf ("\nSCSI device %d not available\n", dev
);
320 return CMD_RET_USAGE
;
322 /* at least 4 args */
323 if (strcmp(argv
[1],"read") == 0) {
324 ulong addr
= simple_strtoul(argv
[2], NULL
, 16);
325 ulong blk
= simple_strtoul(argv
[3], NULL
, 16);
326 ulong cnt
= simple_strtoul(argv
[4], NULL
, 16);
328 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
329 scsi_curr_dev
, blk
, cnt
);
330 n
= scsi_read(scsi_curr_dev
, blk
, cnt
, (ulong
*)addr
);
331 printf ("%ld blocks read: %s\n",n
,(n
==cnt
) ? "OK" : "ERROR");
333 } else if (strcmp(argv
[1], "write") == 0) {
334 ulong addr
= simple_strtoul(argv
[2], NULL
, 16);
335 ulong blk
= simple_strtoul(argv
[3], NULL
, 16);
336 ulong cnt
= simple_strtoul(argv
[4], NULL
, 16);
338 printf("\nSCSI write: device %d block # %ld, "
340 scsi_curr_dev
, blk
, cnt
);
341 n
= scsi_write(scsi_curr_dev
, blk
, cnt
,
343 printf("%ld blocks written: %s\n", n
,
344 (n
== cnt
) ? "OK" : "ERROR");
348 return CMD_RET_USAGE
;
351 /****************************************************************************************
355 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
357 static ulong
scsi_read(int device
, lbaint_t blknr
, lbaint_t blkcnt
,
360 lbaint_t start
, blks
;
362 unsigned short smallblks
;
363 ccb
* pccb
=(ccb
*)&tempccb
;
367 pccb
->target
=scsi_dev_desc
[device
].target
;
368 pccb
->lun
=scsi_dev_desc
[device
].lun
;
369 buf_addr
=(unsigned long)buffer
;
372 debug("\nscsi_read: dev %d startblk " LBAF
373 ", blccnt " LBAF
" buffer %lx\n",
374 device
, start
, blks
, (unsigned long)buffer
);
376 pccb
->pdata
=(unsigned char *)buf_addr
;
377 if(blks
>SCSI_MAX_READ_BLK
) {
378 pccb
->datalen
=scsi_dev_desc
[device
].blksz
* SCSI_MAX_READ_BLK
;
379 smallblks
=SCSI_MAX_READ_BLK
;
380 scsi_setup_read_ext(pccb
,start
,smallblks
);
381 start
+=SCSI_MAX_READ_BLK
;
382 blks
-=SCSI_MAX_READ_BLK
;
385 pccb
->datalen
=scsi_dev_desc
[device
].blksz
* blks
;
386 smallblks
=(unsigned short) blks
;
387 scsi_setup_read_ext(pccb
,start
,smallblks
);
391 debug("scsi_read_ext: startblk " LBAF
392 ", blccnt %x buffer %lx\n",
393 start
, smallblks
, buf_addr
);
394 if (scsi_exec(pccb
) != true) {
395 scsi_print_error(pccb
);
399 buf_addr
+=pccb
->datalen
;
401 debug("scsi_read_ext: end startblk " LBAF
402 ", blccnt %x buffer %lx\n", start
, smallblks
, buf_addr
);
406 /*******************************************************************************
410 /* Almost the maximum amount of the scsi_ext command.. */
411 #define SCSI_MAX_WRITE_BLK 0xFFFF
413 static ulong
scsi_write(int device
, lbaint_t blknr
,
414 lbaint_t blkcnt
, const void *buffer
)
416 lbaint_t start
, blks
;
418 unsigned short smallblks
;
419 ccb
* pccb
= (ccb
*)&tempccb
;
423 pccb
->target
= scsi_dev_desc
[device
].target
;
424 pccb
->lun
= scsi_dev_desc
[device
].lun
;
425 buf_addr
= (unsigned long)buffer
;
428 debug("\n%s: dev %d startblk " LBAF
", blccnt " LBAF
" buffer %lx\n",
429 __func__
, device
, start
, blks
, (unsigned long)buffer
);
431 pccb
->pdata
= (unsigned char *)buf_addr
;
432 if (blks
> SCSI_MAX_WRITE_BLK
) {
433 pccb
->datalen
= (scsi_dev_desc
[device
].blksz
*
435 smallblks
= SCSI_MAX_WRITE_BLK
;
436 scsi_setup_write_ext(pccb
, start
, smallblks
);
437 start
+= SCSI_MAX_WRITE_BLK
;
438 blks
-= SCSI_MAX_WRITE_BLK
;
440 pccb
->datalen
= scsi_dev_desc
[device
].blksz
* blks
;
441 smallblks
= (unsigned short)blks
;
442 scsi_setup_write_ext(pccb
, start
, smallblks
);
446 debug("%s: startblk " LBAF
", blccnt %x buffer %lx\n",
447 __func__
, start
, smallblks
, buf_addr
);
448 if (scsi_exec(pccb
) != true) {
449 scsi_print_error(pccb
);
453 buf_addr
+= pccb
->datalen
;
455 debug("%s: end startblk " LBAF
", blccnt %x buffer %lx\n",
456 __func__
, start
, smallblks
, buf_addr
);
460 /* copy src to dest, skipping leading and trailing blanks
461 * and null terminate the string
463 void scsi_ident_cpy (unsigned char *dest
, unsigned char *src
, unsigned int len
)
479 for( ; start
<=end
; start
++) {
486 /* Trim trailing blanks, and NUL-terminate string
488 void scsi_trim_trail (unsigned char *str
, unsigned int len
)
490 unsigned char *p
= str
+ len
- 1;
500 int scsi_read_capacity(ccb
*pccb
, lbaint_t
*capacity
, unsigned long *blksz
)
504 memset(pccb
->cmd
, 0, sizeof(pccb
->cmd
));
505 pccb
->cmd
[0] = SCSI_RD_CAPAC10
;
506 pccb
->cmd
[1] = pccb
->lun
<< 5;
508 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
511 if (scsi_exec(pccb
) != true)
514 *capacity
= ((lbaint_t
)pccb
->pdata
[0] << 24) |
515 ((lbaint_t
)pccb
->pdata
[1] << 16) |
516 ((lbaint_t
)pccb
->pdata
[2] << 8) |
517 ((lbaint_t
)pccb
->pdata
[3]);
519 if (*capacity
!= 0xffffffff) {
520 /* Read capacity (10) was sufficient for this drive. */
521 *blksz
= ((unsigned long)pccb
->pdata
[4] << 24) |
522 ((unsigned long)pccb
->pdata
[5] << 16) |
523 ((unsigned long)pccb
->pdata
[6] << 8) |
524 ((unsigned long)pccb
->pdata
[7]);
528 /* Read capacity (10) was insufficient. Use read capacity (16). */
530 memset(pccb
->cmd
, 0, sizeof(pccb
->cmd
));
531 pccb
->cmd
[0] = SCSI_RD_CAPAC16
;
534 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
537 if (scsi_exec(pccb
) != true)
540 *capacity
= ((uint64_t)pccb
->pdata
[0] << 56) |
541 ((uint64_t)pccb
->pdata
[1] << 48) |
542 ((uint64_t)pccb
->pdata
[2] << 40) |
543 ((uint64_t)pccb
->pdata
[3] << 32) |
544 ((uint64_t)pccb
->pdata
[4] << 24) |
545 ((uint64_t)pccb
->pdata
[5] << 16) |
546 ((uint64_t)pccb
->pdata
[6] << 8) |
547 ((uint64_t)pccb
->pdata
[7]);
549 *blksz
= ((uint64_t)pccb
->pdata
[8] << 56) |
550 ((uint64_t)pccb
->pdata
[9] << 48) |
551 ((uint64_t)pccb
->pdata
[10] << 40) |
552 ((uint64_t)pccb
->pdata
[11] << 32) |
553 ((uint64_t)pccb
->pdata
[12] << 24) |
554 ((uint64_t)pccb
->pdata
[13] << 16) |
555 ((uint64_t)pccb
->pdata
[14] << 8) |
556 ((uint64_t)pccb
->pdata
[15]);
562 /************************************************************************************
563 * Some setup (fill-in) routines
565 void scsi_setup_test_unit_ready(ccb
* pccb
)
567 pccb
->cmd
[0]=SCSI_TST_U_RDY
;
568 pccb
->cmd
[1]=pccb
->lun
<<5;
574 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
577 void scsi_setup_read_ext(ccb
* pccb
, unsigned long start
, unsigned short blocks
)
579 pccb
->cmd
[0]=SCSI_READ10
;
580 pccb
->cmd
[1]=pccb
->lun
<<5;
581 pccb
->cmd
[2]=((unsigned char) (start
>>24))&0xff;
582 pccb
->cmd
[3]=((unsigned char) (start
>>16))&0xff;
583 pccb
->cmd
[4]=((unsigned char) (start
>>8))&0xff;
584 pccb
->cmd
[5]=((unsigned char) (start
))&0xff;
586 pccb
->cmd
[7]=((unsigned char) (blocks
>>8))&0xff;
587 pccb
->cmd
[8]=(unsigned char) blocks
& 0xff;
590 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
591 debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
592 pccb
->cmd
[0],pccb
->cmd
[1],
593 pccb
->cmd
[2],pccb
->cmd
[3],pccb
->cmd
[4],pccb
->cmd
[5],
594 pccb
->cmd
[7],pccb
->cmd
[8]);
597 void scsi_setup_write_ext(ccb
*pccb
, unsigned long start
, unsigned short blocks
)
599 pccb
->cmd
[0] = SCSI_WRITE10
;
600 pccb
->cmd
[1] = pccb
->lun
<< 5;
601 pccb
->cmd
[2] = ((unsigned char) (start
>>24)) & 0xff;
602 pccb
->cmd
[3] = ((unsigned char) (start
>>16)) & 0xff;
603 pccb
->cmd
[4] = ((unsigned char) (start
>>8)) & 0xff;
604 pccb
->cmd
[5] = ((unsigned char) (start
)) & 0xff;
606 pccb
->cmd
[7] = ((unsigned char) (blocks
>>8)) & 0xff;
607 pccb
->cmd
[8] = (unsigned char)blocks
& 0xff;
610 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
611 debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
613 pccb
->cmd
[0], pccb
->cmd
[1],
614 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
615 pccb
->cmd
[7], pccb
->cmd
[8]);
618 void scsi_setup_read6(ccb
* pccb
, unsigned long start
, unsigned short blocks
)
620 pccb
->cmd
[0]=SCSI_READ6
;
621 pccb
->cmd
[1]=pccb
->lun
<<5 | (((unsigned char)(start
>>16))&0x1f);
622 pccb
->cmd
[2]=((unsigned char) (start
>>8))&0xff;
623 pccb
->cmd
[3]=((unsigned char) (start
))&0xff;
624 pccb
->cmd
[4]=(unsigned char) blocks
& 0xff;
627 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
628 debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
629 pccb
->cmd
[0],pccb
->cmd
[1],
630 pccb
->cmd
[2],pccb
->cmd
[3],pccb
->cmd
[4]);
634 void scsi_setup_inquiry(ccb
* pccb
)
636 pccb
->cmd
[0]=SCSI_INQUIRY
;
637 pccb
->cmd
[1]=pccb
->lun
<<5;
640 if(pccb
->datalen
>255)
643 pccb
->cmd
[4]=(unsigned char)pccb
->datalen
;
646 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
653 "reset - reset SCSI controller\n"
654 "scsi info - show available SCSI devices\n"
655 "scsi scan - (re-)scan SCSI bus\n"
656 "scsi device [dev] - show or set current device\n"
657 "scsi part [dev] - print partition table of one or all SCSI devices\n"
658 "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
659 " to memory address `addr'\n"
660 "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
661 " `blk#' from memory address `addr'"
665 scsiboot
, 3, 1, do_scsiboot
,
666 "boot from SCSI device",