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 struct scsi_cmd 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(struct scsi_cmd
*pccb
)
53 /* Dummy function that could print an error for debugging */
56 #ifdef CONFIG_SYS_64BIT_LBA
57 void scsi_setup_read16(struct scsi_cmd
*pccb
, lbaint_t start
,
60 pccb
->cmd
[0] = SCSI_READ16
;
61 pccb
->cmd
[1] = pccb
->lun
<< 5;
62 pccb
->cmd
[2] = (unsigned char)(start
>> 56) & 0xff;
63 pccb
->cmd
[3] = (unsigned char)(start
>> 48) & 0xff;
64 pccb
->cmd
[4] = (unsigned char)(start
>> 40) & 0xff;
65 pccb
->cmd
[5] = (unsigned char)(start
>> 32) & 0xff;
66 pccb
->cmd
[6] = (unsigned char)(start
>> 24) & 0xff;
67 pccb
->cmd
[7] = (unsigned char)(start
>> 16) & 0xff;
68 pccb
->cmd
[8] = (unsigned char)(start
>> 8) & 0xff;
69 pccb
->cmd
[9] = (unsigned char)start
& 0xff;
71 pccb
->cmd
[11] = (unsigned char)(blocks
>> 24) & 0xff;
72 pccb
->cmd
[12] = (unsigned char)(blocks
>> 16) & 0xff;
73 pccb
->cmd
[13] = (unsigned char)(blocks
>> 8) & 0xff;
74 pccb
->cmd
[14] = (unsigned char)blocks
& 0xff;
77 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
78 debug("scsi_setup_read16: cmd: %02X %02X startblk %02X%02X%02X%02X%02X%02X%02X%02X blccnt %02X%02X%02X%02X\n",
79 pccb
->cmd
[0], pccb
->cmd
[1],
80 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
81 pccb
->cmd
[6], pccb
->cmd
[7], pccb
->cmd
[8], pccb
->cmd
[9],
82 pccb
->cmd
[11], pccb
->cmd
[12], pccb
->cmd
[13], pccb
->cmd
[14]);
86 static void scsi_setup_read_ext(struct scsi_cmd
*pccb
, lbaint_t start
,
87 unsigned short blocks
)
89 pccb
->cmd
[0] = SCSI_READ10
;
90 pccb
->cmd
[1] = pccb
->lun
<< 5;
91 pccb
->cmd
[2] = (unsigned char)(start
>> 24) & 0xff;
92 pccb
->cmd
[3] = (unsigned char)(start
>> 16) & 0xff;
93 pccb
->cmd
[4] = (unsigned char)(start
>> 8) & 0xff;
94 pccb
->cmd
[5] = (unsigned char)start
& 0xff;
96 pccb
->cmd
[7] = (unsigned char)(blocks
>> 8) & 0xff;
97 pccb
->cmd
[8] = (unsigned char)blocks
& 0xff;
100 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
101 debug("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
102 pccb
->cmd
[0], pccb
->cmd
[1],
103 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
104 pccb
->cmd
[7], pccb
->cmd
[8]);
107 static void scsi_setup_write_ext(struct scsi_cmd
*pccb
, lbaint_t start
,
108 unsigned short blocks
)
110 pccb
->cmd
[0] = SCSI_WRITE10
;
111 pccb
->cmd
[1] = pccb
->lun
<< 5;
112 pccb
->cmd
[2] = (unsigned char)(start
>> 24) & 0xff;
113 pccb
->cmd
[3] = (unsigned char)(start
>> 16) & 0xff;
114 pccb
->cmd
[4] = (unsigned char)(start
>> 8) & 0xff;
115 pccb
->cmd
[5] = (unsigned char)start
& 0xff;
117 pccb
->cmd
[7] = ((unsigned char)(blocks
>> 8)) & 0xff;
118 pccb
->cmd
[8] = (unsigned char)blocks
& 0xff;
121 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
122 debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
124 pccb
->cmd
[0], pccb
->cmd
[1],
125 pccb
->cmd
[2], pccb
->cmd
[3], pccb
->cmd
[4], pccb
->cmd
[5],
126 pccb
->cmd
[7], pccb
->cmd
[8]);
129 static void scsi_setup_inquiry(struct scsi_cmd
*pccb
)
131 pccb
->cmd
[0] = SCSI_INQUIRY
;
132 pccb
->cmd
[1] = pccb
->lun
<< 5;
135 if (pccb
->datalen
> 255)
138 pccb
->cmd
[4] = (unsigned char)pccb
->datalen
;
141 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
145 static ulong
scsi_read(struct udevice
*dev
, lbaint_t blknr
, lbaint_t blkcnt
,
148 static ulong
scsi_read(struct blk_desc
*block_dev
, lbaint_t blknr
,
149 lbaint_t blkcnt
, void *buffer
)
153 struct blk_desc
*block_dev
= dev_get_uclass_platdata(dev
);
155 lbaint_t start
, blks
;
157 unsigned short smallblks
= 0;
158 struct scsi_cmd
*pccb
= (struct scsi_cmd
*)&tempccb
;
161 pccb
->target
= block_dev
->target
;
162 pccb
->lun
= block_dev
->lun
;
163 buf_addr
= (unsigned long)buffer
;
166 debug("\nscsi_read: dev %d startblk " LBAF
167 ", blccnt " LBAF
" buffer %lx\n",
168 block_dev
->devnum
, start
, blks
, (unsigned long)buffer
);
170 pccb
->pdata
= (unsigned char *)buf_addr
;
171 #ifdef CONFIG_SYS_64BIT_LBA
172 if (start
> SCSI_LBA48_READ
) {
173 unsigned long blocks
;
174 blocks
= min_t(lbaint_t
, blks
, SCSI_MAX_READ_BLK
);
175 pccb
->datalen
= block_dev
->blksz
* blocks
;
176 scsi_setup_read16(pccb
, start
, blocks
);
181 if (blks
> SCSI_MAX_READ_BLK
) {
182 pccb
->datalen
= block_dev
->blksz
*
184 smallblks
= SCSI_MAX_READ_BLK
;
185 scsi_setup_read_ext(pccb
, start
, smallblks
);
186 start
+= SCSI_MAX_READ_BLK
;
187 blks
-= SCSI_MAX_READ_BLK
;
189 pccb
->datalen
= block_dev
->blksz
* blks
;
190 smallblks
= (unsigned short)blks
;
191 scsi_setup_read_ext(pccb
, start
, smallblks
);
195 debug("scsi_read_ext: startblk " LBAF
196 ", blccnt %x buffer %" PRIXPTR
"\n",
197 start
, smallblks
, buf_addr
);
198 if (scsi_exec(pccb
) != true) {
199 scsi_print_error(pccb
);
203 buf_addr
+= pccb
->datalen
;
205 debug("scsi_read_ext: end startblk " LBAF
206 ", blccnt %x buffer %" PRIXPTR
"\n", start
, smallblks
, buf_addr
);
210 /*******************************************************************************
214 /* Almost the maximum amount of the scsi_ext command.. */
215 #define SCSI_MAX_WRITE_BLK 0xFFFF
218 static ulong
scsi_write(struct udevice
*dev
, lbaint_t blknr
, lbaint_t blkcnt
,
221 static ulong
scsi_write(struct blk_desc
*block_dev
, lbaint_t blknr
,
222 lbaint_t blkcnt
, const void *buffer
)
226 struct blk_desc
*block_dev
= dev_get_uclass_platdata(dev
);
228 lbaint_t start
, blks
;
230 unsigned short smallblks
;
231 struct scsi_cmd
*pccb
= (struct scsi_cmd
*)&tempccb
;
234 pccb
->target
= block_dev
->target
;
235 pccb
->lun
= block_dev
->lun
;
236 buf_addr
= (unsigned long)buffer
;
239 debug("\n%s: dev %d startblk " LBAF
", blccnt " LBAF
" buffer %lx\n",
240 __func__
, block_dev
->devnum
, start
, blks
, (unsigned long)buffer
);
242 pccb
->pdata
= (unsigned char *)buf_addr
;
243 if (blks
> SCSI_MAX_WRITE_BLK
) {
244 pccb
->datalen
= (block_dev
->blksz
*
246 smallblks
= SCSI_MAX_WRITE_BLK
;
247 scsi_setup_write_ext(pccb
, start
, smallblks
);
248 start
+= SCSI_MAX_WRITE_BLK
;
249 blks
-= SCSI_MAX_WRITE_BLK
;
251 pccb
->datalen
= block_dev
->blksz
* blks
;
252 smallblks
= (unsigned short)blks
;
253 scsi_setup_write_ext(pccb
, start
, smallblks
);
257 debug("%s: startblk " LBAF
", blccnt %x buffer %" PRIXPTR
"\n",
258 __func__
, start
, smallblks
, buf_addr
);
259 if (scsi_exec(pccb
) != true) {
260 scsi_print_error(pccb
);
264 buf_addr
+= pccb
->datalen
;
266 debug("%s: end startblk " LBAF
", blccnt %x buffer %" PRIXPTR
"\n",
267 __func__
, start
, smallblks
, buf_addr
);
271 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
277 * Find a device from the list, this driver will support a single
280 for (i
= 0; i
< ARRAY_SIZE(scsi_device_list
); i
++) {
281 /* get PCI Device ID */
286 ret
= dm_pci_find_device(scsi_device_list
[i
].vendor
,
287 scsi_device_list
[i
].device
, 0, &dev
);
289 busdevfunc
= dm_pci_get_bdf(dev
);
293 busdevfunc
= pci_find_device(scsi_device_list
[i
].vendor
,
294 scsi_device_list
[i
].device
,
297 if (busdevfunc
!= -1)
301 if (busdevfunc
== -1) {
302 printf("Error: SCSI Controller(s) ");
303 for (i
= 0; i
< ARRAY_SIZE(scsi_device_list
); i
++) {
305 scsi_device_list
[i
].vendor
,
306 scsi_device_list
[i
].device
);
308 printf("not found\n");
313 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
314 scsi_device_list
[i
].vendor
,
315 scsi_device_list
[i
].device
,
316 (busdevfunc
>> 16) & 0xFF,
317 (busdevfunc
>> 11) & 0x1F,
318 (busdevfunc
>> 8) & 0x7);
321 bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI
, "ahci");
322 scsi_low_level_init(busdevfunc
);
324 bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI
);
328 /* copy src to dest, skipping leading and trailing blanks
329 * and null terminate the string
331 static void scsi_ident_cpy(unsigned char *dest
, unsigned char *src
,
337 while (start
< len
) {
338 if (src
[start
] != ' ')
343 while (end
> start
) {
348 for (; start
<= end
; start
++)
349 *dest
++= src
[start
];
353 static int scsi_read_capacity(struct scsi_cmd
*pccb
, lbaint_t
*capacity
,
354 unsigned long *blksz
)
358 memset(pccb
->cmd
, '\0', sizeof(pccb
->cmd
));
359 pccb
->cmd
[0] = SCSI_RD_CAPAC10
;
360 pccb
->cmd
[1] = pccb
->lun
<< 5;
362 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
365 if (scsi_exec(pccb
) != true)
368 *capacity
= ((lbaint_t
)pccb
->pdata
[0] << 24) |
369 ((lbaint_t
)pccb
->pdata
[1] << 16) |
370 ((lbaint_t
)pccb
->pdata
[2] << 8) |
371 ((lbaint_t
)pccb
->pdata
[3]);
373 if (*capacity
!= 0xffffffff) {
374 /* Read capacity (10) was sufficient for this drive. */
375 *blksz
= ((unsigned long)pccb
->pdata
[4] << 24) |
376 ((unsigned long)pccb
->pdata
[5] << 16) |
377 ((unsigned long)pccb
->pdata
[6] << 8) |
378 ((unsigned long)pccb
->pdata
[7]);
382 /* Read capacity (10) was insufficient. Use read capacity (16). */
383 memset(pccb
->cmd
, '\0', sizeof(pccb
->cmd
));
384 pccb
->cmd
[0] = SCSI_RD_CAPAC16
;
387 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
390 if (scsi_exec(pccb
) != true)
393 *capacity
= ((uint64_t)pccb
->pdata
[0] << 56) |
394 ((uint64_t)pccb
->pdata
[1] << 48) |
395 ((uint64_t)pccb
->pdata
[2] << 40) |
396 ((uint64_t)pccb
->pdata
[3] << 32) |
397 ((uint64_t)pccb
->pdata
[4] << 24) |
398 ((uint64_t)pccb
->pdata
[5] << 16) |
399 ((uint64_t)pccb
->pdata
[6] << 8) |
400 ((uint64_t)pccb
->pdata
[7]);
402 *blksz
= ((uint64_t)pccb
->pdata
[8] << 56) |
403 ((uint64_t)pccb
->pdata
[9] << 48) |
404 ((uint64_t)pccb
->pdata
[10] << 40) |
405 ((uint64_t)pccb
->pdata
[11] << 32) |
406 ((uint64_t)pccb
->pdata
[12] << 24) |
407 ((uint64_t)pccb
->pdata
[13] << 16) |
408 ((uint64_t)pccb
->pdata
[14] << 8) |
409 ((uint64_t)pccb
->pdata
[15]);
416 * Some setup (fill-in) routines
418 static void scsi_setup_test_unit_ready(struct scsi_cmd
*pccb
)
420 pccb
->cmd
[0] = SCSI_TST_U_RDY
;
421 pccb
->cmd
[1] = pccb
->lun
<< 5;
427 pccb
->msgout
[0] = SCSI_IDENTIFY
; /* NOT USED */
431 * scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties
433 * @dev_desc: Block device description pointer
435 static void scsi_init_dev_desc_priv(struct blk_desc
*dev_desc
)
437 dev_desc
->target
= 0xff;
438 dev_desc
->lun
= 0xff;
439 dev_desc
->log2blksz
=
440 LOG2_INVALID(typeof(dev_desc
->log2blksz
));
441 dev_desc
->type
= DEV_TYPE_UNKNOWN
;
442 dev_desc
->vendor
[0] = 0;
443 dev_desc
->product
[0] = 0;
444 dev_desc
->revision
[0] = 0;
445 dev_desc
->removable
= false;
447 dev_desc
->block_read
= scsi_read
;
448 dev_desc
->block_write
= scsi_write
;
452 #if !defined(CONFIG_DM_SCSI)
454 * scsi_init_dev_desc - initialize all SCSI specific blk_desc properties
456 * @dev_desc: Block device description pointer
457 * @devnum: Device number
459 static void scsi_init_dev_desc(struct blk_desc
*dev_desc
, int devnum
)
463 dev_desc
->if_type
= IF_TYPE_SCSI
;
464 dev_desc
->devnum
= devnum
;
465 dev_desc
->part_type
= PART_TYPE_UNKNOWN
;
467 scsi_init_dev_desc_priv(dev_desc
);
472 * scsi_detect_dev - Detect scsi device
476 * @dev_desc: block device description
478 * The scsi_detect_dev detects and fills a dev_desc structure when the device is
481 * Return: 0 on success, error value otherwise
483 static int scsi_detect_dev(int target
, int lun
, struct blk_desc
*dev_desc
)
485 unsigned char perq
, modi
;
488 struct scsi_cmd
*pccb
= (struct scsi_cmd
*)&tempccb
;
490 pccb
->target
= target
;
492 pccb
->pdata
= (unsigned char *)&tempbuff
;
494 scsi_setup_inquiry(pccb
);
495 if (scsi_exec(pccb
) != true) {
496 if (pccb
->contr_stat
== SCSI_SEL_TIME_OUT
) {
498 * selection timeout => assuming no
501 debug("Selection timeout ID %d\n",
505 scsi_print_error(pccb
);
510 if ((perq
& 0x1f) == 0x1f)
511 return -ENODEV
; /* skip unknown devices */
512 if ((modi
& 0x80) == 0x80) /* drive is removable */
513 dev_desc
->removable
= true;
514 /* get info for this device */
515 scsi_ident_cpy((unsigned char *)dev_desc
->vendor
,
517 scsi_ident_cpy((unsigned char *)dev_desc
->product
,
519 scsi_ident_cpy((unsigned char *)dev_desc
->revision
,
521 dev_desc
->target
= pccb
->target
;
522 dev_desc
->lun
= pccb
->lun
;
525 scsi_setup_test_unit_ready(pccb
);
526 if (scsi_exec(pccb
) != true) {
527 if (dev_desc
->removable
) {
528 dev_desc
->type
= perq
;
531 scsi_print_error(pccb
);
534 if (scsi_read_capacity(pccb
, &capacity
, &blksz
)) {
535 scsi_print_error(pccb
);
538 dev_desc
->lba
= capacity
;
539 dev_desc
->blksz
= blksz
;
540 dev_desc
->log2blksz
= LOG2(dev_desc
->blksz
);
541 dev_desc
->type
= perq
;
547 * (re)-scan the scsi bus and reports scsi device info
548 * to the user if mode = 1
550 #if defined(CONFIG_DM_SCSI)
551 static int do_scsi_scan_one(struct udevice
*dev
, int id
, int lun
, int mode
)
554 struct udevice
*bdev
;
556 struct blk_desc
*bdesc
;
560 * detect the scsi driver to get information about its geometry (block
561 * size, number of blocks) and other parameters (ids, type, ...)
563 scsi_init_dev_desc_priv(&bd
);
564 if (scsi_detect_dev(id
, lun
, &bd
))
568 * Create only one block device and do detection
569 * to make sure that there won't be a lot of
570 * block devices created
572 snprintf(str
, sizeof(str
), "id%dlun%d", id
, lun
);
573 ret
= blk_create_devicef(dev
, "scsi_blk", str
, IF_TYPE_SCSI
, -1,
574 bd
.blksz
, bd
.blksz
* bd
.lba
, &bdev
);
576 debug("Can't create device\n");
580 bdesc
= dev_get_uclass_platdata(bdev
);
583 bdesc
->removable
= bd
.removable
;
584 bdesc
->type
= bd
.type
;
585 memcpy(&bdesc
->vendor
, &bd
.vendor
, sizeof(bd
.vendor
));
586 memcpy(&bdesc
->product
, &bd
.product
, sizeof(bd
.product
));
587 memcpy(&bdesc
->revision
, &bd
.revision
, sizeof(bd
.revision
));
591 printf(" Device %d: ", 0);
597 int scsi_scan(int mode
)
599 unsigned char i
, lun
;
601 struct udevice
*dev
; /* SCSI controller */
605 printf("scanning bus for devices...\n");
607 blk_unbind_all(IF_TYPE_SCSI
);
609 ret
= uclass_get(UCLASS_SCSI
, &uc
);
613 uclass_foreach_dev(dev
, uc
) {
614 struct scsi_platdata
*plat
; /* scsi controller platdata */
616 /* probe SCSI controller driver */
617 ret
= device_probe(dev
);
621 /* Get controller platdata */
622 plat
= dev_get_platdata(dev
);
624 for (i
= 0; i
< plat
->max_id
; i
++)
625 for (lun
= 0; lun
< plat
->max_lun
; lun
++)
626 do_scsi_scan_one(dev
, i
, lun
, mode
);
632 int scsi_scan(int mode
)
634 unsigned char i
, lun
;
638 printf("scanning bus for devices...\n");
639 for (i
= 0; i
< CONFIG_SYS_SCSI_MAX_DEVICE
; i
++)
640 scsi_init_dev_desc(&scsi_dev_desc
[i
], i
);
643 for (i
= 0; i
< CONFIG_SYS_SCSI_MAX_SCSI_ID
; i
++) {
644 for (lun
= 0; lun
< CONFIG_SYS_SCSI_MAX_LUN
; lun
++) {
645 ret
= scsi_detect_dev(i
, lun
,
646 &scsi_dev_desc
[scsi_max_devs
]);
649 part_init(&scsi_dev_desc
[scsi_max_devs
]);
652 printf(" Device %d: ", 0);
653 dev_print(&scsi_dev_desc
[scsi_max_devs
]);
658 if (scsi_max_devs
> 0)
663 printf("Found %d device(s).\n", scsi_max_devs
);
664 #ifndef CONFIG_SPL_BUILD
665 setenv_ulong("scsidevs", scsi_max_devs
);
672 static const struct blk_ops scsi_blk_ops
= {
677 U_BOOT_DRIVER(scsi_blk
) = {
680 .ops
= &scsi_blk_ops
,
683 U_BOOT_LEGACY_BLK(scsi
) = {
684 .if_typename
= "scsi",
685 .if_type
= IF_TYPE_SCSI
,
686 .max_devs
= CONFIG_SYS_SCSI_MAX_DEVICE
,
687 .desc
= scsi_dev_desc
,