3 * Denis Peter, MPL AG Switzerland
5 * SPDX-License-Identifier: GPL-2.0+
13 #include <dm/device-internal.h>
14 #include <dm/uclass-internal.h>
16 #if !defined(CONFIG_DM_SCSI)
17 #ifdef CONFIG_SCSI_DEV_LIST
18 #define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
20 #ifdef CONFIG_SATA_ULI5288
22 #define SCSI_VEND_ID 0x10b9
23 #define SCSI_DEV_ID 0x5288
25 #elif !defined(CONFIG_SCSI_AHCI_PLAT)
26 #error no scsi device defined
28 #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
32 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
33 const struct pci_device_id scsi_device_list
[] = { SCSI_DEV_LIST
};
35 static ccb tempccb
; /* temporary scsi command buffer */
37 static unsigned char tempbuff
[512]; /* temporary data buffer */
39 #if !defined(CONFIG_DM_SCSI)
40 static int scsi_max_devs
; /* number of highest available scsi device */
42 static int scsi_curr_dev
; /* current device */
44 static struct blk_desc scsi_dev_desc
[CONFIG_SYS_SCSI_MAX_DEVICE
];
47 /* almost the maximum amount of the scsi_ext command.. */
48 #define SCSI_MAX_READ_BLK 0xFFFF
49 #define SCSI_LBA48_READ 0xFFFFFFF
51 static void scsi_print_error(ccb
*pccb
)
53 /* Dummy function that could print an error for debugging */
56 #ifdef CONFIG_SYS_64BIT_LBA
57 void scsi_setup_read16(ccb
*pccb
, lbaint_t start
, unsigned long blocks
)
59 pccb
->cmd
[0] = SCSI_READ16
;
60 pccb
->cmd
[1] = pccb
->lun
<< 5;
61 pccb
->cmd
[2] = (unsigned char)(start
>> 56) & 0xff;
62 pccb
->cmd
[3] = (unsigned char)(start
>> 48) & 0xff;
63 pccb
->cmd
[4] = (unsigned char)(start
>> 40) & 0xff;
64 pccb
->cmd
[5] = (unsigned char)(start
>> 32) & 0xff;
65 pccb
->cmd
[6] = (unsigned char)(start
>> 24) & 0xff;
66 pccb
->cmd
[7] = (unsigned char)(start
>> 16) & 0xff;
67 pccb
->cmd
[8] = (unsigned char)(start
>> 8) & 0xff;
68 pccb
->cmd
[9] = (unsigned char)start
& 0xff;
70 pccb
->cmd
[11] = (unsigned char)(blocks
>> 24) & 0xff;
71 pccb
->cmd
[12] = (unsigned char)(blocks
>> 16) & 0xff;
72 pccb
->cmd
[13] = (unsigned char)(blocks
>> 8) & 0xff;
73 pccb
->cmd
[14] = (unsigned char)blocks
& 0xff;
76 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
77 debug("scsi_setup_read16: cmd: %02X %02X startblk %02X%02X%02X%02X%02X%02X%02X%02X blccnt %02X%02X%02X%02X\n",
78 pccb
->cmd
[0], pccb
->cmd
[1],
79 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
80 pccb
->cmd
[6], pccb
->cmd
[7], pccb
->cmd
[8], pccb
->cmd
[9],
81 pccb
->cmd
[11], pccb
->cmd
[12], pccb
->cmd
[13], pccb
->cmd
[14]);
85 static void scsi_setup_read_ext(ccb
*pccb
, lbaint_t start
,
86 unsigned short blocks
)
88 pccb
->cmd
[0] = SCSI_READ10
;
89 pccb
->cmd
[1] = pccb
->lun
<< 5;
90 pccb
->cmd
[2] = (unsigned char)(start
>> 24) & 0xff;
91 pccb
->cmd
[3] = (unsigned char)(start
>> 16) & 0xff;
92 pccb
->cmd
[4] = (unsigned char)(start
>> 8) & 0xff;
93 pccb
->cmd
[5] = (unsigned char)start
& 0xff;
95 pccb
->cmd
[7] = (unsigned char)(blocks
>> 8) & 0xff;
96 pccb
->cmd
[8] = (unsigned char)blocks
& 0xff;
99 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
100 debug("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
101 pccb
->cmd
[0], pccb
->cmd
[1],
102 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
103 pccb
->cmd
[7], pccb
->cmd
[8]);
106 static void scsi_setup_write_ext(ccb
*pccb
, lbaint_t start
,
107 unsigned short blocks
)
109 pccb
->cmd
[0] = SCSI_WRITE10
;
110 pccb
->cmd
[1] = pccb
->lun
<< 5;
111 pccb
->cmd
[2] = (unsigned char)(start
>> 24) & 0xff;
112 pccb
->cmd
[3] = (unsigned char)(start
>> 16) & 0xff;
113 pccb
->cmd
[4] = (unsigned char)(start
>> 8) & 0xff;
114 pccb
->cmd
[5] = (unsigned char)start
& 0xff;
116 pccb
->cmd
[7] = ((unsigned char)(blocks
>> 8)) & 0xff;
117 pccb
->cmd
[8] = (unsigned char)blocks
& 0xff;
120 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
121 debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
123 pccb
->cmd
[0], pccb
->cmd
[1],
124 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
125 pccb
->cmd
[7], pccb
->cmd
[8]);
128 static void scsi_setup_inquiry(ccb
*pccb
)
130 pccb
->cmd
[0] = SCSI_INQUIRY
;
131 pccb
->cmd
[1] = pccb
->lun
<< 5;
134 if (pccb
->datalen
> 255)
137 pccb
->cmd
[4] = (unsigned char)pccb
->datalen
;
140 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
144 static ulong
scsi_read(struct udevice
*dev
, lbaint_t blknr
, lbaint_t blkcnt
,
147 static ulong
scsi_read(struct blk_desc
*block_dev
, lbaint_t blknr
,
148 lbaint_t blkcnt
, void *buffer
)
152 struct blk_desc
*block_dev
= dev_get_uclass_platdata(dev
);
154 lbaint_t start
, blks
;
156 unsigned short smallblks
= 0;
157 ccb
*pccb
= (ccb
*)&tempccb
;
160 pccb
->target
= block_dev
->target
;
161 pccb
->lun
= block_dev
->lun
;
162 buf_addr
= (unsigned long)buffer
;
165 debug("\nscsi_read: dev %d startblk " LBAF
166 ", blccnt " LBAF
" buffer %lx\n",
167 block_dev
->devnum
, start
, blks
, (unsigned long)buffer
);
169 pccb
->pdata
= (unsigned char *)buf_addr
;
170 #ifdef CONFIG_SYS_64BIT_LBA
171 if (start
> SCSI_LBA48_READ
) {
172 unsigned long blocks
;
173 blocks
= min_t(lbaint_t
, blks
, SCSI_MAX_READ_BLK
);
174 pccb
->datalen
= block_dev
->blksz
* blocks
;
175 scsi_setup_read16(pccb
, start
, blocks
);
180 if (blks
> SCSI_MAX_READ_BLK
) {
181 pccb
->datalen
= block_dev
->blksz
*
183 smallblks
= SCSI_MAX_READ_BLK
;
184 scsi_setup_read_ext(pccb
, start
, smallblks
);
185 start
+= SCSI_MAX_READ_BLK
;
186 blks
-= SCSI_MAX_READ_BLK
;
188 pccb
->datalen
= block_dev
->blksz
* blks
;
189 smallblks
= (unsigned short)blks
;
190 scsi_setup_read_ext(pccb
, start
, smallblks
);
194 debug("scsi_read_ext: startblk " LBAF
195 ", blccnt %x buffer %" PRIXPTR
"\n",
196 start
, smallblks
, buf_addr
);
197 if (scsi_exec(pccb
) != true) {
198 scsi_print_error(pccb
);
202 buf_addr
+= pccb
->datalen
;
204 debug("scsi_read_ext: end startblk " LBAF
205 ", blccnt %x buffer %" PRIXPTR
"\n", start
, smallblks
, buf_addr
);
209 /*******************************************************************************
213 /* Almost the maximum amount of the scsi_ext command.. */
214 #define SCSI_MAX_WRITE_BLK 0xFFFF
217 static ulong
scsi_write(struct udevice
*dev
, lbaint_t blknr
, lbaint_t blkcnt
,
220 static ulong
scsi_write(struct blk_desc
*block_dev
, lbaint_t blknr
,
221 lbaint_t blkcnt
, const void *buffer
)
225 struct blk_desc
*block_dev
= dev_get_uclass_platdata(dev
);
227 lbaint_t start
, blks
;
229 unsigned short smallblks
;
230 ccb
*pccb
= (ccb
*)&tempccb
;
233 pccb
->target
= block_dev
->target
;
234 pccb
->lun
= block_dev
->lun
;
235 buf_addr
= (unsigned long)buffer
;
238 debug("\n%s: dev %d startblk " LBAF
", blccnt " LBAF
" buffer %lx\n",
239 __func__
, block_dev
->devnum
, start
, blks
, (unsigned long)buffer
);
241 pccb
->pdata
= (unsigned char *)buf_addr
;
242 if (blks
> SCSI_MAX_WRITE_BLK
) {
243 pccb
->datalen
= (block_dev
->blksz
*
245 smallblks
= SCSI_MAX_WRITE_BLK
;
246 scsi_setup_write_ext(pccb
, start
, smallblks
);
247 start
+= SCSI_MAX_WRITE_BLK
;
248 blks
-= SCSI_MAX_WRITE_BLK
;
250 pccb
->datalen
= block_dev
->blksz
* blks
;
251 smallblks
= (unsigned short)blks
;
252 scsi_setup_write_ext(pccb
, start
, smallblks
);
256 debug("%s: startblk " LBAF
", blccnt %x buffer %" PRIXPTR
"\n",
257 __func__
, start
, smallblks
, buf_addr
);
258 if (scsi_exec(pccb
) != true) {
259 scsi_print_error(pccb
);
263 buf_addr
+= pccb
->datalen
;
265 debug("%s: end startblk " LBAF
", blccnt %x buffer %" PRIXPTR
"\n",
266 __func__
, start
, smallblks
, buf_addr
);
270 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
276 * Find a device from the list, this driver will support a single
279 for (i
= 0; i
< ARRAY_SIZE(scsi_device_list
); i
++) {
280 /* get PCI Device ID */
285 ret
= dm_pci_find_device(scsi_device_list
[i
].vendor
,
286 scsi_device_list
[i
].device
, 0, &dev
);
288 busdevfunc
= dm_pci_get_bdf(dev
);
292 busdevfunc
= pci_find_device(scsi_device_list
[i
].vendor
,
293 scsi_device_list
[i
].device
,
296 if (busdevfunc
!= -1)
300 if (busdevfunc
== -1) {
301 printf("Error: SCSI Controller(s) ");
302 for (i
= 0; i
< ARRAY_SIZE(scsi_device_list
); i
++) {
304 scsi_device_list
[i
].vendor
,
305 scsi_device_list
[i
].device
);
307 printf("not found\n");
312 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
313 scsi_device_list
[i
].vendor
,
314 scsi_device_list
[i
].device
,
315 (busdevfunc
>> 16) & 0xFF,
316 (busdevfunc
>> 11) & 0x1F,
317 (busdevfunc
>> 8) & 0x7);
320 bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI
, "ahci");
321 scsi_low_level_init(busdevfunc
);
323 bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI
);
327 /* copy src to dest, skipping leading and trailing blanks
328 * and null terminate the string
330 static void scsi_ident_cpy(unsigned char *dest
, unsigned char *src
,
336 while (start
< len
) {
337 if (src
[start
] != ' ')
342 while (end
> start
) {
347 for (; start
<= end
; start
++)
348 *dest
++= src
[start
];
352 static int scsi_read_capacity(ccb
*pccb
, lbaint_t
*capacity
,
353 unsigned long *blksz
)
357 memset(pccb
->cmd
, '\0', sizeof(pccb
->cmd
));
358 pccb
->cmd
[0] = SCSI_RD_CAPAC10
;
359 pccb
->cmd
[1] = pccb
->lun
<< 5;
361 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
364 if (scsi_exec(pccb
) != true)
367 *capacity
= ((lbaint_t
)pccb
->pdata
[0] << 24) |
368 ((lbaint_t
)pccb
->pdata
[1] << 16) |
369 ((lbaint_t
)pccb
->pdata
[2] << 8) |
370 ((lbaint_t
)pccb
->pdata
[3]);
372 if (*capacity
!= 0xffffffff) {
373 /* Read capacity (10) was sufficient for this drive. */
374 *blksz
= ((unsigned long)pccb
->pdata
[4] << 24) |
375 ((unsigned long)pccb
->pdata
[5] << 16) |
376 ((unsigned long)pccb
->pdata
[6] << 8) |
377 ((unsigned long)pccb
->pdata
[7]);
381 /* Read capacity (10) was insufficient. Use read capacity (16). */
382 memset(pccb
->cmd
, '\0', sizeof(pccb
->cmd
));
383 pccb
->cmd
[0] = SCSI_RD_CAPAC16
;
386 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
389 if (scsi_exec(pccb
) != true)
392 *capacity
= ((uint64_t)pccb
->pdata
[0] << 56) |
393 ((uint64_t)pccb
->pdata
[1] << 48) |
394 ((uint64_t)pccb
->pdata
[2] << 40) |
395 ((uint64_t)pccb
->pdata
[3] << 32) |
396 ((uint64_t)pccb
->pdata
[4] << 24) |
397 ((uint64_t)pccb
->pdata
[5] << 16) |
398 ((uint64_t)pccb
->pdata
[6] << 8) |
399 ((uint64_t)pccb
->pdata
[7]);
401 *blksz
= ((uint64_t)pccb
->pdata
[8] << 56) |
402 ((uint64_t)pccb
->pdata
[9] << 48) |
403 ((uint64_t)pccb
->pdata
[10] << 40) |
404 ((uint64_t)pccb
->pdata
[11] << 32) |
405 ((uint64_t)pccb
->pdata
[12] << 24) |
406 ((uint64_t)pccb
->pdata
[13] << 16) |
407 ((uint64_t)pccb
->pdata
[14] << 8) |
408 ((uint64_t)pccb
->pdata
[15]);
415 * Some setup (fill-in) routines
417 static void scsi_setup_test_unit_ready(ccb
*pccb
)
419 pccb
->cmd
[0] = SCSI_TST_U_RDY
;
420 pccb
->cmd
[1] = pccb
->lun
<< 5;
426 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
430 * scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties
432 * @dev_desc: Block device description pointer
434 static void scsi_init_dev_desc_priv(struct blk_desc
*dev_desc
)
436 dev_desc
->target
= 0xff;
437 dev_desc
->lun
= 0xff;
438 dev_desc
->log2blksz
=
439 LOG2_INVALID(typeof(dev_desc
->log2blksz
));
440 dev_desc
->type
= DEV_TYPE_UNKNOWN
;
441 dev_desc
->vendor
[0] = 0;
442 dev_desc
->product
[0] = 0;
443 dev_desc
->revision
[0] = 0;
444 dev_desc
->removable
= false;
446 dev_desc
->block_read
= scsi_read
;
447 dev_desc
->block_write
= scsi_write
;
451 #if !defined(CONFIG_DM_SCSI)
453 * scsi_init_dev_desc - initialize all SCSI specific blk_desc properties
455 * @dev_desc: Block device description pointer
456 * @devnum: Device number
458 static void scsi_init_dev_desc(struct blk_desc
*dev_desc
, int devnum
)
462 dev_desc
->if_type
= IF_TYPE_SCSI
;
463 dev_desc
->devnum
= devnum
;
464 dev_desc
->part_type
= PART_TYPE_UNKNOWN
;
466 scsi_init_dev_desc_priv(dev_desc
);
471 * scsi_detect_dev - Detect scsi device
475 * @dev_desc: block device description
477 * The scsi_detect_dev detects and fills a dev_desc structure when the device is
480 * Return: 0 on success, error value otherwise
482 static int scsi_detect_dev(int target
, int lun
, struct blk_desc
*dev_desc
)
484 unsigned char perq
, modi
;
487 ccb
*pccb
= (ccb
*)&tempccb
;
489 pccb
->target
= target
;
491 pccb
->pdata
= (unsigned char *)&tempbuff
;
493 scsi_setup_inquiry(pccb
);
494 if (scsi_exec(pccb
) != true) {
495 if (pccb
->contr_stat
== SCSI_SEL_TIME_OUT
) {
497 * selection timeout => assuming no
500 debug("Selection timeout ID %d\n",
504 scsi_print_error(pccb
);
509 if ((perq
& 0x1f) == 0x1f)
510 return -ENODEV
; /* skip unknown devices */
511 if ((modi
& 0x80) == 0x80) /* drive is removable */
512 dev_desc
->removable
= true;
513 /* get info for this device */
514 scsi_ident_cpy((unsigned char *)dev_desc
->vendor
,
516 scsi_ident_cpy((unsigned char *)dev_desc
->product
,
518 scsi_ident_cpy((unsigned char *)dev_desc
->revision
,
520 dev_desc
->target
= pccb
->target
;
521 dev_desc
->lun
= pccb
->lun
;
524 scsi_setup_test_unit_ready(pccb
);
525 if (scsi_exec(pccb
) != true) {
526 if (dev_desc
->removable
) {
527 dev_desc
->type
= perq
;
530 scsi_print_error(pccb
);
533 if (scsi_read_capacity(pccb
, &capacity
, &blksz
)) {
534 scsi_print_error(pccb
);
537 dev_desc
->lba
= capacity
;
538 dev_desc
->blksz
= blksz
;
539 dev_desc
->log2blksz
= LOG2(dev_desc
->blksz
);
540 dev_desc
->type
= perq
;
546 * (re)-scan the scsi bus and reports scsi device info
547 * to the user if mode = 1
549 #if defined(CONFIG_DM_SCSI)
550 static int do_scsi_scan_one(struct udevice
*dev
, int id
, int lun
, int mode
)
553 struct udevice
*bdev
;
555 struct blk_desc
*bdesc
;
559 * detect the scsi driver to get information about its geometry (block
560 * size, number of blocks) and other parameters (ids, type, ...)
562 scsi_init_dev_desc_priv(&bd
);
563 if (scsi_detect_dev(id
, lun
, &bd
))
567 * Create only one block device and do detection
568 * to make sure that there won't be a lot of
569 * block devices created
571 snprintf(str
, sizeof(str
), "id%dlun%d", id
, lun
);
572 ret
= blk_create_devicef(dev
, "scsi_blk", str
, IF_TYPE_SCSI
, -1,
573 bd
.blksz
, bd
.blksz
* bd
.lba
, &bdev
);
575 debug("Can't create device\n");
579 bdesc
= dev_get_uclass_platdata(bdev
);
582 bdesc
->removable
= bd
.removable
;
583 bdesc
->type
= bd
.type
;
584 memcpy(&bdesc
->vendor
, &bd
.vendor
, sizeof(bd
.vendor
));
585 memcpy(&bdesc
->product
, &bd
.product
, sizeof(bd
.product
));
586 memcpy(&bdesc
->revision
, &bd
.revision
, sizeof(bd
.revision
));
590 printf(" Device %d: ", 0);
596 int scsi_scan(int mode
)
598 unsigned char i
, lun
;
600 struct udevice
*dev
; /* SCSI controller */
604 printf("scanning bus for devices...\n");
606 blk_unbind_all(IF_TYPE_SCSI
);
608 ret
= uclass_get(UCLASS_SCSI
, &uc
);
612 uclass_foreach_dev(dev
, uc
) {
613 struct scsi_platdata
*plat
; /* scsi controller platdata */
615 /* probe SCSI controller driver */
616 ret
= device_probe(dev
);
620 /* Get controller platdata */
621 plat
= dev_get_platdata(dev
);
623 for (i
= 0; i
< plat
->max_id
; i
++)
624 for (lun
= 0; lun
< plat
->max_lun
; lun
++)
625 do_scsi_scan_one(dev
, i
, lun
, mode
);
631 int scsi_scan(int mode
)
633 unsigned char i
, lun
;
637 printf("scanning bus for devices...\n");
638 for (i
= 0; i
< CONFIG_SYS_SCSI_MAX_DEVICE
; i
++)
639 scsi_init_dev_desc(&scsi_dev_desc
[i
], i
);
642 for (i
= 0; i
< CONFIG_SYS_SCSI_MAX_SCSI_ID
; i
++) {
643 for (lun
= 0; lun
< CONFIG_SYS_SCSI_MAX_LUN
; lun
++) {
644 ret
= scsi_detect_dev(i
, lun
,
645 &scsi_dev_desc
[scsi_max_devs
]);
648 part_init(&scsi_dev_desc
[scsi_max_devs
]);
651 printf(" Device %d: ", 0);
652 dev_print(&scsi_dev_desc
[scsi_max_devs
]);
657 if (scsi_max_devs
> 0)
662 printf("Found %d device(s).\n", scsi_max_devs
);
663 #ifndef CONFIG_SPL_BUILD
664 setenv_ulong("scsidevs", scsi_max_devs
);
671 static const struct blk_ops scsi_blk_ops
= {
676 U_BOOT_DRIVER(scsi_blk
) = {
679 .ops
= &scsi_blk_ops
,
682 U_BOOT_LEGACY_BLK(scsi
) = {
683 .if_typename
= "scsi",
684 .if_type
= IF_TYPE_SCSI
,
685 .max_devs
= CONFIG_SYS_SCSI_MAX_DEVICE
,
686 .desc
= scsi_dev_desc
,