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_SCSI_SYM53C8XX
21 #define SCSI_VEND_ID 0x1000
22 #ifndef CONFIG_SCSI_DEV_ID
23 #define SCSI_DEV_ID 0x0001
25 #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
27 #elif defined CONFIG_SATA_ULI5288
29 #define SCSI_VEND_ID 0x10b9
30 #define SCSI_DEV_ID 0x5288
32 #elif !defined(CONFIG_SCSI_AHCI_PLAT)
33 #error no scsi device defined
35 #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
39 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
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 #if !defined(CONFIG_DM_SCSI)
47 static int scsi_max_devs
; /* number of highest available scsi device */
49 static int scsi_curr_dev
; /* current device */
51 static struct blk_desc scsi_dev_desc
[CONFIG_SYS_SCSI_MAX_DEVICE
];
54 /* almost the maximum amount of the scsi_ext command.. */
55 #define SCSI_MAX_READ_BLK 0xFFFF
56 #define SCSI_LBA48_READ 0xFFFFFFF
58 #ifdef CONFIG_SYS_64BIT_LBA
59 void scsi_setup_read16(ccb
*pccb
, lbaint_t start
, unsigned long blocks
)
61 pccb
->cmd
[0] = SCSI_READ16
;
62 pccb
->cmd
[1] = pccb
->lun
<< 5;
63 pccb
->cmd
[2] = (unsigned char)(start
>> 56) & 0xff;
64 pccb
->cmd
[3] = (unsigned char)(start
>> 48) & 0xff;
65 pccb
->cmd
[4] = (unsigned char)(start
>> 40) & 0xff;
66 pccb
->cmd
[5] = (unsigned char)(start
>> 32) & 0xff;
67 pccb
->cmd
[6] = (unsigned char)(start
>> 24) & 0xff;
68 pccb
->cmd
[7] = (unsigned char)(start
>> 16) & 0xff;
69 pccb
->cmd
[8] = (unsigned char)(start
>> 8) & 0xff;
70 pccb
->cmd
[9] = (unsigned char)start
& 0xff;
72 pccb
->cmd
[11] = (unsigned char)(blocks
>> 24) & 0xff;
73 pccb
->cmd
[12] = (unsigned char)(blocks
>> 16) & 0xff;
74 pccb
->cmd
[13] = (unsigned char)(blocks
>> 8) & 0xff;
75 pccb
->cmd
[14] = (unsigned char)blocks
& 0xff;
78 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
79 debug("scsi_setup_read16: cmd: %02X %02X startblk %02X%02X%02X%02X%02X%02X%02X%02X blccnt %02X%02X%02X%02X\n",
80 pccb
->cmd
[0], pccb
->cmd
[1],
81 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
82 pccb
->cmd
[6], pccb
->cmd
[7], pccb
->cmd
[8], pccb
->cmd
[9],
83 pccb
->cmd
[11], pccb
->cmd
[12], pccb
->cmd
[13], pccb
->cmd
[14]);
87 static void scsi_setup_read_ext(ccb
*pccb
, lbaint_t start
,
88 unsigned short blocks
)
90 pccb
->cmd
[0] = SCSI_READ10
;
91 pccb
->cmd
[1] = pccb
->lun
<< 5;
92 pccb
->cmd
[2] = (unsigned char)(start
>> 24) & 0xff;
93 pccb
->cmd
[3] = (unsigned char)(start
>> 16) & 0xff;
94 pccb
->cmd
[4] = (unsigned char)(start
>> 8) & 0xff;
95 pccb
->cmd
[5] = (unsigned char)start
& 0xff;
97 pccb
->cmd
[7] = (unsigned char)(blocks
>> 8) & 0xff;
98 pccb
->cmd
[8] = (unsigned char)blocks
& 0xff;
101 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
102 debug("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
103 pccb
->cmd
[0], pccb
->cmd
[1],
104 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
105 pccb
->cmd
[7], pccb
->cmd
[8]);
108 static void scsi_setup_write_ext(ccb
*pccb
, lbaint_t start
,
109 unsigned short blocks
)
111 pccb
->cmd
[0] = SCSI_WRITE10
;
112 pccb
->cmd
[1] = pccb
->lun
<< 5;
113 pccb
->cmd
[2] = (unsigned char)(start
>> 24) & 0xff;
114 pccb
->cmd
[3] = (unsigned char)(start
>> 16) & 0xff;
115 pccb
->cmd
[4] = (unsigned char)(start
>> 8) & 0xff;
116 pccb
->cmd
[5] = (unsigned char)start
& 0xff;
118 pccb
->cmd
[7] = ((unsigned char)(blocks
>> 8)) & 0xff;
119 pccb
->cmd
[8] = (unsigned char)blocks
& 0xff;
122 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
123 debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
125 pccb
->cmd
[0], pccb
->cmd
[1],
126 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
127 pccb
->cmd
[7], pccb
->cmd
[8]);
130 static void scsi_setup_inquiry(ccb
*pccb
)
132 pccb
->cmd
[0] = SCSI_INQUIRY
;
133 pccb
->cmd
[1] = pccb
->lun
<< 5;
136 if (pccb
->datalen
> 255)
139 pccb
->cmd
[4] = (unsigned char)pccb
->datalen
;
142 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
146 static ulong
scsi_read(struct udevice
*dev
, lbaint_t blknr
, lbaint_t blkcnt
,
149 static ulong
scsi_read(struct blk_desc
*block_dev
, lbaint_t blknr
,
150 lbaint_t blkcnt
, void *buffer
)
154 struct blk_desc
*block_dev
= dev_get_uclass_platdata(dev
);
156 lbaint_t start
, blks
;
158 unsigned short smallblks
= 0;
159 ccb
*pccb
= (ccb
*)&tempccb
;
162 pccb
->target
= block_dev
->target
;
163 pccb
->lun
= block_dev
->lun
;
164 buf_addr
= (unsigned long)buffer
;
167 debug("\nscsi_read: dev %d startblk " LBAF
168 ", blccnt " LBAF
" buffer %lx\n",
169 block_dev
->devnum
, start
, blks
, (unsigned long)buffer
);
171 pccb
->pdata
= (unsigned char *)buf_addr
;
172 #ifdef CONFIG_SYS_64BIT_LBA
173 if (start
> SCSI_LBA48_READ
) {
174 unsigned long blocks
;
175 blocks
= min_t(lbaint_t
, blks
, SCSI_MAX_READ_BLK
);
176 pccb
->datalen
= block_dev
->blksz
* blocks
;
177 scsi_setup_read16(pccb
, start
, blocks
);
182 if (blks
> SCSI_MAX_READ_BLK
) {
183 pccb
->datalen
= block_dev
->blksz
*
185 smallblks
= SCSI_MAX_READ_BLK
;
186 scsi_setup_read_ext(pccb
, start
, smallblks
);
187 start
+= SCSI_MAX_READ_BLK
;
188 blks
-= SCSI_MAX_READ_BLK
;
190 pccb
->datalen
= block_dev
->blksz
* blks
;
191 smallblks
= (unsigned short)blks
;
192 scsi_setup_read_ext(pccb
, start
, smallblks
);
196 debug("scsi_read_ext: startblk " LBAF
197 ", blccnt %x buffer %" PRIXPTR
"\n",
198 start
, smallblks
, buf_addr
);
199 if (scsi_exec(pccb
) != true) {
200 scsi_print_error(pccb
);
204 buf_addr
+= pccb
->datalen
;
206 debug("scsi_read_ext: end startblk " LBAF
207 ", blccnt %x buffer %" PRIXPTR
"\n", start
, smallblks
, buf_addr
);
211 /*******************************************************************************
215 /* Almost the maximum amount of the scsi_ext command.. */
216 #define SCSI_MAX_WRITE_BLK 0xFFFF
219 static ulong
scsi_write(struct udevice
*dev
, lbaint_t blknr
, lbaint_t blkcnt
,
222 static ulong
scsi_write(struct blk_desc
*block_dev
, lbaint_t blknr
,
223 lbaint_t blkcnt
, const void *buffer
)
227 struct blk_desc
*block_dev
= dev_get_uclass_platdata(dev
);
229 lbaint_t start
, blks
;
231 unsigned short smallblks
;
232 ccb
*pccb
= (ccb
*)&tempccb
;
235 pccb
->target
= block_dev
->target
;
236 pccb
->lun
= block_dev
->lun
;
237 buf_addr
= (unsigned long)buffer
;
240 debug("\n%s: dev %d startblk " LBAF
", blccnt " LBAF
" buffer %lx\n",
241 __func__
, block_dev
->devnum
, start
, blks
, (unsigned long)buffer
);
243 pccb
->pdata
= (unsigned char *)buf_addr
;
244 if (blks
> SCSI_MAX_WRITE_BLK
) {
245 pccb
->datalen
= (block_dev
->blksz
*
247 smallblks
= SCSI_MAX_WRITE_BLK
;
248 scsi_setup_write_ext(pccb
, start
, smallblks
);
249 start
+= SCSI_MAX_WRITE_BLK
;
250 blks
-= SCSI_MAX_WRITE_BLK
;
252 pccb
->datalen
= block_dev
->blksz
* blks
;
253 smallblks
= (unsigned short)blks
;
254 scsi_setup_write_ext(pccb
, start
, smallblks
);
258 debug("%s: startblk " LBAF
", blccnt %x buffer %" PRIXPTR
"\n",
259 __func__
, start
, smallblks
, buf_addr
);
260 if (scsi_exec(pccb
) != true) {
261 scsi_print_error(pccb
);
265 buf_addr
+= pccb
->datalen
;
267 debug("%s: end startblk " LBAF
", blccnt %x buffer %" PRIXPTR
"\n",
268 __func__
, start
, smallblks
, buf_addr
);
272 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
278 * Find a device from the list, this driver will support a single
281 for (i
= 0; i
< ARRAY_SIZE(scsi_device_list
); i
++) {
282 /* get PCI Device ID */
287 ret
= dm_pci_find_device(scsi_device_list
[i
].vendor
,
288 scsi_device_list
[i
].device
, 0, &dev
);
290 busdevfunc
= dm_pci_get_bdf(dev
);
294 busdevfunc
= pci_find_device(scsi_device_list
[i
].vendor
,
295 scsi_device_list
[i
].device
,
298 if (busdevfunc
!= -1)
302 if (busdevfunc
== -1) {
303 printf("Error: SCSI Controller(s) ");
304 for (i
= 0; i
< ARRAY_SIZE(scsi_device_list
); i
++) {
306 scsi_device_list
[i
].vendor
,
307 scsi_device_list
[i
].device
);
309 printf("not found\n");
314 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
315 scsi_device_list
[i
].vendor
,
316 scsi_device_list
[i
].device
,
317 (busdevfunc
>> 16) & 0xFF,
318 (busdevfunc
>> 11) & 0x1F,
319 (busdevfunc
>> 8) & 0x7);
322 bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI
, "ahci");
323 scsi_low_level_init(busdevfunc
);
325 bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI
);
329 /* copy src to dest, skipping leading and trailing blanks
330 * and null terminate the string
332 static void scsi_ident_cpy(unsigned char *dest
, unsigned char *src
,
338 while (start
< len
) {
339 if (src
[start
] != ' ')
344 while (end
> start
) {
349 for (; start
<= end
; start
++)
350 *dest
++= src
[start
];
354 static int scsi_read_capacity(ccb
*pccb
, lbaint_t
*capacity
,
355 unsigned long *blksz
)
359 memset(pccb
->cmd
, '\0', sizeof(pccb
->cmd
));
360 pccb
->cmd
[0] = SCSI_RD_CAPAC10
;
361 pccb
->cmd
[1] = pccb
->lun
<< 5;
363 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
366 if (scsi_exec(pccb
) != true)
369 *capacity
= ((lbaint_t
)pccb
->pdata
[0] << 24) |
370 ((lbaint_t
)pccb
->pdata
[1] << 16) |
371 ((lbaint_t
)pccb
->pdata
[2] << 8) |
372 ((lbaint_t
)pccb
->pdata
[3]);
374 if (*capacity
!= 0xffffffff) {
375 /* Read capacity (10) was sufficient for this drive. */
376 *blksz
= ((unsigned long)pccb
->pdata
[4] << 24) |
377 ((unsigned long)pccb
->pdata
[5] << 16) |
378 ((unsigned long)pccb
->pdata
[6] << 8) |
379 ((unsigned long)pccb
->pdata
[7]);
383 /* Read capacity (10) was insufficient. Use read capacity (16). */
384 memset(pccb
->cmd
, '\0', sizeof(pccb
->cmd
));
385 pccb
->cmd
[0] = SCSI_RD_CAPAC16
;
388 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
391 if (scsi_exec(pccb
) != true)
394 *capacity
= ((uint64_t)pccb
->pdata
[0] << 56) |
395 ((uint64_t)pccb
->pdata
[1] << 48) |
396 ((uint64_t)pccb
->pdata
[2] << 40) |
397 ((uint64_t)pccb
->pdata
[3] << 32) |
398 ((uint64_t)pccb
->pdata
[4] << 24) |
399 ((uint64_t)pccb
->pdata
[5] << 16) |
400 ((uint64_t)pccb
->pdata
[6] << 8) |
401 ((uint64_t)pccb
->pdata
[7]);
403 *blksz
= ((uint64_t)pccb
->pdata
[8] << 56) |
404 ((uint64_t)pccb
->pdata
[9] << 48) |
405 ((uint64_t)pccb
->pdata
[10] << 40) |
406 ((uint64_t)pccb
->pdata
[11] << 32) |
407 ((uint64_t)pccb
->pdata
[12] << 24) |
408 ((uint64_t)pccb
->pdata
[13] << 16) |
409 ((uint64_t)pccb
->pdata
[14] << 8) |
410 ((uint64_t)pccb
->pdata
[15]);
417 * Some setup (fill-in) routines
419 static void scsi_setup_test_unit_ready(ccb
*pccb
)
421 pccb
->cmd
[0] = SCSI_TST_U_RDY
;
422 pccb
->cmd
[1] = pccb
->lun
<< 5;
428 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
432 * scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties
434 * @dev_desc: Block device description pointer
436 static void scsi_init_dev_desc_priv(struct blk_desc
*dev_desc
)
438 dev_desc
->target
= 0xff;
439 dev_desc
->lun
= 0xff;
440 dev_desc
->log2blksz
=
441 LOG2_INVALID(typeof(dev_desc
->log2blksz
));
442 dev_desc
->type
= DEV_TYPE_UNKNOWN
;
443 dev_desc
->vendor
[0] = 0;
444 dev_desc
->product
[0] = 0;
445 dev_desc
->revision
[0] = 0;
446 dev_desc
->removable
= false;
448 dev_desc
->block_read
= scsi_read
;
449 dev_desc
->block_write
= scsi_write
;
453 #if !defined(CONFIG_DM_SCSI)
455 * scsi_init_dev_desc - initialize all SCSI specific blk_desc properties
457 * @dev_desc: Block device description pointer
458 * @devnum: Device number
460 static void scsi_init_dev_desc(struct blk_desc
*dev_desc
, int devnum
)
464 dev_desc
->if_type
= IF_TYPE_SCSI
;
465 dev_desc
->devnum
= devnum
;
466 dev_desc
->part_type
= PART_TYPE_UNKNOWN
;
468 scsi_init_dev_desc_priv(dev_desc
);
473 * scsi_detect_dev - Detect scsi device
477 * @dev_desc: block device description
479 * The scsi_detect_dev detects and fills a dev_desc structure when the device is
482 * Return: 0 on success, error value otherwise
484 static int scsi_detect_dev(int target
, int lun
, struct blk_desc
*dev_desc
)
486 unsigned char perq
, modi
;
489 ccb
*pccb
= (ccb
*)&tempccb
;
491 pccb
->target
= target
;
493 pccb
->pdata
= (unsigned char *)&tempbuff
;
495 scsi_setup_inquiry(pccb
);
496 if (scsi_exec(pccb
) != true) {
497 if (pccb
->contr_stat
== SCSI_SEL_TIME_OUT
) {
499 * selection timeout => assuming no
502 debug("Selection timeout ID %d\n",
506 scsi_print_error(pccb
);
511 if ((perq
& 0x1f) == 0x1f)
512 return -ENODEV
; /* skip unknown devices */
513 if ((modi
& 0x80) == 0x80) /* drive is removable */
514 dev_desc
->removable
= true;
515 /* get info for this device */
516 scsi_ident_cpy((unsigned char *)dev_desc
->vendor
,
518 scsi_ident_cpy((unsigned char *)dev_desc
->product
,
520 scsi_ident_cpy((unsigned char *)dev_desc
->revision
,
522 dev_desc
->target
= pccb
->target
;
523 dev_desc
->lun
= pccb
->lun
;
526 scsi_setup_test_unit_ready(pccb
);
527 if (scsi_exec(pccb
) != true) {
528 if (dev_desc
->removable
) {
529 dev_desc
->type
= perq
;
532 scsi_print_error(pccb
);
535 if (scsi_read_capacity(pccb
, &capacity
, &blksz
)) {
536 scsi_print_error(pccb
);
539 dev_desc
->lba
= capacity
;
540 dev_desc
->blksz
= blksz
;
541 dev_desc
->log2blksz
= LOG2(dev_desc
->blksz
);
542 dev_desc
->type
= perq
;
548 * (re)-scan the scsi bus and reports scsi device info
549 * to the user if mode = 1
551 #if defined(CONFIG_DM_SCSI)
552 static int do_scsi_scan_one(struct udevice
*dev
, int id
, int lun
, int mode
)
555 struct udevice
*bdev
;
557 struct blk_desc
*bdesc
;
561 * detect the scsi driver to get information about its geometry (block
562 * size, number of blocks) and other parameters (ids, type, ...)
564 scsi_init_dev_desc_priv(&bd
);
565 if (scsi_detect_dev(id
, lun
, &bd
))
569 * Create only one block device and do detection
570 * to make sure that there won't be a lot of
571 * block devices created
573 snprintf(str
, sizeof(str
), "id%dlun%d", id
, lun
);
574 ret
= blk_create_devicef(dev
, "scsi_blk", str
, IF_TYPE_SCSI
, -1,
575 bd
.blksz
, bd
.blksz
* bd
.lba
, &bdev
);
577 debug("Can't create device\n");
581 bdesc
= dev_get_uclass_platdata(bdev
);
584 bdesc
->removable
= bd
.removable
;
585 bdesc
->type
= bd
.type
;
586 memcpy(&bdesc
->vendor
, &bd
.vendor
, sizeof(bd
.vendor
));
587 memcpy(&bdesc
->product
, &bd
.product
, sizeof(bd
.product
));
588 memcpy(&bdesc
->revision
, &bd
.revision
, sizeof(bd
.revision
));
592 printf(" Device %d: ", 0);
598 int scsi_scan(int mode
)
600 unsigned char i
, lun
;
602 struct udevice
*dev
; /* SCSI controller */
606 printf("scanning bus for devices...\n");
608 blk_unbind_all(IF_TYPE_SCSI
);
610 ret
= uclass_get(UCLASS_SCSI
, &uc
);
614 uclass_foreach_dev(dev
, uc
) {
615 struct scsi_platdata
*plat
; /* scsi controller platdata */
617 /* probe SCSI controller driver */
618 ret
= device_probe(dev
);
622 /* Get controller platdata */
623 plat
= dev_get_platdata(dev
);
625 for (i
= 0; i
< plat
->max_id
; i
++)
626 for (lun
= 0; lun
< plat
->max_lun
; lun
++)
627 do_scsi_scan_one(dev
, i
, lun
, mode
);
633 int scsi_scan(int mode
)
635 unsigned char i
, lun
;
639 printf("scanning bus for devices...\n");
640 for (i
= 0; i
< CONFIG_SYS_SCSI_MAX_DEVICE
; i
++)
641 scsi_init_dev_desc(&scsi_dev_desc
[i
], i
);
644 for (i
= 0; i
< CONFIG_SYS_SCSI_MAX_SCSI_ID
; i
++) {
645 for (lun
= 0; lun
< CONFIG_SYS_SCSI_MAX_LUN
; lun
++) {
646 ret
= scsi_detect_dev(i
, lun
,
647 &scsi_dev_desc
[scsi_max_devs
]);
650 part_init(&scsi_dev_desc
[scsi_max_devs
]);
653 printf(" Device %d: ", 0);
654 dev_print(&scsi_dev_desc
[scsi_max_devs
]);
659 if (scsi_max_devs
> 0)
664 printf("Found %d device(s).\n", scsi_max_devs
);
665 #ifndef CONFIG_SPL_BUILD
666 setenv_ulong("scsidevs", scsi_max_devs
);
673 static const struct blk_ops scsi_blk_ops
= {
678 U_BOOT_DRIVER(scsi_blk
) = {
681 .ops
= &scsi_blk_ops
,
684 U_BOOT_LEGACY_BLK(scsi
) = {
685 .if_typename
= "scsi",
686 .if_type
= IF_TYPE_SCSI
,
687 .max_devs
= CONFIG_SYS_SCSI_MAX_DEVICE
,
688 .desc
= scsi_dev_desc
,