1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2001
4 * Denis Peter, MPL AG Switzerland
5 */
6
7 #include <common.h>
8 #include <blk.h>
9 #include <bootstage.h>
10 #include <dm.h>
11 #include <env.h>
12 #include <libata.h>
13 #include <log.h>
14 #include <part.h>
15 #include <pci.h>
16 #include <scsi.h>
17 #include <dm/device-internal.h>
18 #include <dm/uclass-internal.h>
19
20 #if !defined(CONFIG_DM_SCSI)
21 # ifdef CONFIG_SCSI_DEV_LIST
22 # define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
23 # else
24 # ifdef CONFIG_SATA_ULI5288
25
26 # define SCSI_VEND_ID 0x10b9
27 # define SCSI_DEV_ID 0x5288
28
29 # elif !defined(CONFIG_SCSI_AHCI_PLAT)
30 # error no scsi device defined
31 # endif
32 # define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
33 # endif
34 #endif
35
36 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT) && \
37 !defined(CONFIG_DM_SCSI)
38 const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
39 #endif
40 static struct scsi_cmd tempccb; /* temporary scsi command buffer */
41
42 static unsigned char tempbuff[512]; /* temporary data buffer */
43
44 #if !defined(CONFIG_DM_SCSI)
45 static int scsi_max_devs; /* number of highest available scsi device */
46
47 static int scsi_curr_dev; /* current device */
48
49 static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
50 #endif
51
52 /* almost the maximum amount of the scsi_ext command.. */
53 #define SCSI_MAX_BLK 0xFFFF
54 #define SCSI_LBA48_READ 0xFFFFFFF
55
scsi_print_error(struct scsi_cmd * pccb)56 static void scsi_print_error(struct scsi_cmd *pccb)
57 {
58 /* Dummy function that could print an error for debugging */
59 }
60
61 #ifdef CONFIG_SYS_64BIT_LBA
scsi_setup_read16(struct scsi_cmd * pccb,lbaint_t start,unsigned long blocks)62 void scsi_setup_read16(struct scsi_cmd *pccb, lbaint_t start,
63 unsigned long blocks)
64 {
65 pccb->cmd[0] = SCSI_READ16;
66 pccb->cmd[1] = pccb->lun << 5;
67 pccb->cmd[2] = (unsigned char)(start >> 56) & 0xff;
68 pccb->cmd[3] = (unsigned char)(start >> 48) & 0xff;
69 pccb->cmd[4] = (unsigned char)(start >> 40) & 0xff;
70 pccb->cmd[5] = (unsigned char)(start >> 32) & 0xff;
71 pccb->cmd[6] = (unsigned char)(start >> 24) & 0xff;
72 pccb->cmd[7] = (unsigned char)(start >> 16) & 0xff;
73 pccb->cmd[8] = (unsigned char)(start >> 8) & 0xff;
74 pccb->cmd[9] = (unsigned char)start & 0xff;
75 pccb->cmd[10] = 0;
76 pccb->cmd[11] = (unsigned char)(blocks >> 24) & 0xff;
77 pccb->cmd[12] = (unsigned char)(blocks >> 16) & 0xff;
78 pccb->cmd[13] = (unsigned char)(blocks >> 8) & 0xff;
79 pccb->cmd[14] = (unsigned char)blocks & 0xff;
80 pccb->cmd[15] = 0;
81 pccb->cmdlen = 16;
82 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
83 debug("scsi_setup_read16: cmd: %02X %02X startblk %02X%02X%02X%02X%02X%02X%02X%02X blccnt %02X%02X%02X%02X\n",
84 pccb->cmd[0], pccb->cmd[1],
85 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
86 pccb->cmd[6], pccb->cmd[7], pccb->cmd[8], pccb->cmd[9],
87 pccb->cmd[11], pccb->cmd[12], pccb->cmd[13], pccb->cmd[14]);
88 }
89 #endif
90
scsi_setup_inquiry(struct scsi_cmd * pccb)91 static void scsi_setup_inquiry(struct scsi_cmd *pccb)
92 {
93 pccb->cmd[0] = SCSI_INQUIRY;
94 pccb->cmd[1] = pccb->lun << 5;
95 pccb->cmd[2] = 0;
96 pccb->cmd[3] = 0;
97 if (pccb->datalen > 255)
98 pccb->cmd[4] = 255;
99 else
100 pccb->cmd[4] = (unsigned char)pccb->datalen;
101 pccb->cmd[5] = 0;
102 pccb->cmdlen = 6;
103 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
104 }
105
106 #ifdef CONFIG_BLK
scsi_setup_read_ext(struct scsi_cmd * pccb,lbaint_t start,unsigned short blocks)107 static void scsi_setup_read_ext(struct scsi_cmd *pccb, lbaint_t start,
108 unsigned short blocks)
109 {
110 pccb->cmd[0] = SCSI_READ10;
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;
116 pccb->cmd[6] = 0;
117 pccb->cmd[7] = (unsigned char)(blocks >> 8) & 0xff;
118 pccb->cmd[8] = (unsigned char)blocks & 0xff;
119 pccb->cmd[6] = 0;
120 pccb->cmdlen = 10;
121 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
122 debug("scsi_setup_read_ext: 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]);
126 }
127
scsi_setup_write_ext(struct scsi_cmd * pccb,lbaint_t start,unsigned short blocks)128 static void scsi_setup_write_ext(struct scsi_cmd *pccb, lbaint_t start,
129 unsigned short blocks)
130 {
131 pccb->cmd[0] = SCSI_WRITE10;
132 pccb->cmd[1] = pccb->lun << 5;
133 pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
134 pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
135 pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
136 pccb->cmd[5] = (unsigned char)start & 0xff;
137 pccb->cmd[6] = 0;
138 pccb->cmd[7] = ((unsigned char)(blocks >> 8)) & 0xff;
139 pccb->cmd[8] = (unsigned char)blocks & 0xff;
140 pccb->cmd[9] = 0;
141 pccb->cmdlen = 10;
142 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
143 debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
144 __func__,
145 pccb->cmd[0], pccb->cmd[1],
146 pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
147 pccb->cmd[7], pccb->cmd[8]);
148 }
149
scsi_read(struct udevice * dev,lbaint_t blknr,lbaint_t blkcnt,void * buffer)150 static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
151 void *buffer)
152 {
153 struct blk_desc *block_dev = dev_get_uclass_plat(dev);
154 struct udevice *bdev = dev->parent;
155 struct scsi_plat *uc_plat = dev_get_uclass_plat(bdev);
156 lbaint_t start, blks, max_blks;
157 uintptr_t buf_addr;
158 unsigned short smallblks = 0;
159 struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb;
160
161 /* Setup device */
162 pccb->target = block_dev->target;
163 pccb->lun = block_dev->lun;
164 buf_addr = (unsigned long)buffer;
165 start = blknr;
166 blks = blkcnt;
167 if (uc_plat->max_bytes_per_req)
168 max_blks = uc_plat->max_bytes_per_req / block_dev->blksz;
169 else
170 max_blks = SCSI_MAX_BLK;
171
172 debug("\nscsi_read: dev %d startblk " LBAF
173 ", blccnt " LBAF " buffer %lx\n",
174 block_dev->devnum, start, blks, (unsigned long)buffer);
175 do {
176 pccb->pdata = (unsigned char *)buf_addr;
177 pccb->dma_dir = DMA_FROM_DEVICE;
178 #ifdef CONFIG_SYS_64BIT_LBA
179 if (start > SCSI_LBA48_READ) {
180 unsigned long blocks;
181 blocks = min_t(lbaint_t, blks, max_blks);
182 pccb->datalen = block_dev->blksz * blocks;
183 scsi_setup_read16(pccb, start, blocks);
184 start += blocks;
185 blks -= blocks;
186 } else
187 #endif
188 if (blks > max_blks) {
189 pccb->datalen = block_dev->blksz * max_blks;
190 smallblks = max_blks;
191 scsi_setup_read_ext(pccb, start, smallblks);
192 start += max_blks;
193 blks -= max_blks;
194 } else {
195 pccb->datalen = block_dev->blksz * blks;
196 smallblks = (unsigned short)blks;
197 scsi_setup_read_ext(pccb, start, smallblks);
198 start += blks;
199 blks = 0;
200 }
201 debug("scsi_read_ext: startblk " LBAF
202 ", blccnt %x buffer %lX\n",
203 start, smallblks, buf_addr);
204 if (scsi_exec(bdev, pccb)) {
205 scsi_print_error(pccb);
206 blkcnt -= blks;
207 break;
208 }
209 buf_addr += pccb->datalen;
210 } while (blks != 0);
211 debug("scsi_read_ext: end startblk " LBAF
212 ", blccnt %x buffer %lX\n", start, smallblks, buf_addr);
213 return blkcnt;
214 }
215
216 /*******************************************************************************
217 * scsi_write
218 */
219
scsi_write(struct udevice * dev,lbaint_t blknr,lbaint_t blkcnt,const void * buffer)220 static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
221 const void *buffer)
222 {
223 struct blk_desc *block_dev = dev_get_uclass_plat(dev);
224 struct udevice *bdev = dev->parent;
225 struct scsi_plat *uc_plat = dev_get_uclass_plat(bdev);
226 lbaint_t start, blks, max_blks;
227 uintptr_t buf_addr;
228 unsigned short smallblks;
229 struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb;
230
231 /* Setup device */
232 pccb->target = block_dev->target;
233 pccb->lun = block_dev->lun;
234 buf_addr = (unsigned long)buffer;
235 start = blknr;
236 blks = blkcnt;
237 if (uc_plat->max_bytes_per_req)
238 max_blks = uc_plat->max_bytes_per_req / block_dev->blksz;
239 else
240 max_blks = SCSI_MAX_BLK;
241
242 debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
243 __func__, block_dev->devnum, start, blks, (unsigned long)buffer);
244 do {
245 pccb->pdata = (unsigned char *)buf_addr;
246 pccb->dma_dir = DMA_TO_DEVICE;
247 if (blks > max_blks) {
248 pccb->datalen = block_dev->blksz * max_blks;
249 smallblks = max_blks;
250 scsi_setup_write_ext(pccb, start, smallblks);
251 start += max_blks;
252 blks -= max_blks;
253 } else {
254 pccb->datalen = block_dev->blksz * blks;
255 smallblks = (unsigned short)blks;
256 scsi_setup_write_ext(pccb, start, smallblks);
257 start += blks;
258 blks = 0;
259 }
260 debug("%s: startblk " LBAF ", blccnt %x buffer %lx\n",
261 __func__, start, smallblks, buf_addr);
262 if (scsi_exec(bdev, pccb)) {
263 scsi_print_error(pccb);
264 blkcnt -= blks;
265 break;
266 }
267 buf_addr += pccb->datalen;
268 } while (blks != 0);
269 debug("%s: end startblk " LBAF ", blccnt %x buffer %lX\n",
270 __func__, start, smallblks, buf_addr);
271 return blkcnt;
272 }
273 #endif
274
275 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT) && \
276 !defined(CONFIG_DM_SCSI)
scsi_init(void)277 void scsi_init(void)
278 {
279 int busdevfunc = -1;
280 int i;
281 /*
282 * Find a device from the list, this driver will support a single
283 * controller.
284 */
285 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
286 /* get PCI Device ID */
287 struct udevice *dev;
288 int ret;
289
290 ret = dm_pci_find_device(scsi_device_list[i].vendor,
291 scsi_device_list[i].device, 0, &dev);
292 if (!ret) {
293 busdevfunc = dm_pci_get_bdf(dev);
294 break;
295 }
296 if (busdevfunc != -1)
297 break;
298 }
299
300 if (busdevfunc == -1) {
301 printf("Error: SCSI Controller(s) ");
302 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
303 printf("%04X:%04X ",
304 scsi_device_list[i].vendor,
305 scsi_device_list[i].device);
306 }
307 printf("not found\n");
308 return;
309 }
310 #ifdef DEBUG
311 else {
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);
318 }
319 #endif
320 bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
321 scsi_low_level_init(busdevfunc);
322 scsi_scan(true);
323 bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
324 }
325 #endif
326
327 /* copy src to dest, skipping leading and trailing blanks
328 * and null terminate the string
329 */
scsi_ident_cpy(unsigned char * dest,unsigned char * src,unsigned int len)330 static void scsi_ident_cpy(unsigned char *dest, unsigned char *src,
331 unsigned int len)
332 {
333 int start, end;
334
335 start = 0;
336 while (start < len) {
337 if (src[start] != ' ')
338 break;
339 start++;
340 }
341 end = len-1;
342 while (end > start) {
343 if (src[end] != ' ')
344 break;
345 end--;
346 }
347 for (; start <= end; start++)
348 *dest ++= src[start];
349 *dest = '\0';
350 }
351
scsi_read_capacity(struct udevice * dev,struct scsi_cmd * pccb,lbaint_t * capacity,unsigned long * blksz)352 static int scsi_read_capacity(struct udevice *dev, struct scsi_cmd *pccb,
353 lbaint_t *capacity, unsigned long *blksz)
354 {
355 *capacity = 0;
356
357 memset(pccb->cmd, '\0', sizeof(pccb->cmd));
358 pccb->cmd[0] = SCSI_RD_CAPAC10;
359 pccb->cmd[1] = pccb->lun << 5;
360 pccb->cmdlen = 10;
361 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
362
363 pccb->datalen = 8;
364 if (scsi_exec(dev, pccb))
365 return 1;
366
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]);
371
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]);
378 return 0;
379 }
380
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;
384 pccb->cmd[1] = 0x10;
385 pccb->cmdlen = 16;
386 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
387
388 pccb->datalen = 16;
389 pccb->dma_dir = DMA_FROM_DEVICE;
390 if (scsi_exec(dev, pccb))
391 return 1;
392
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]);
401
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]);
410
411 return 0;
412 }
413
414
415 /*
416 * Some setup (fill-in) routines
417 */
scsi_setup_test_unit_ready(struct scsi_cmd * pccb)418 static void scsi_setup_test_unit_ready(struct scsi_cmd *pccb)
419 {
420 pccb->cmd[0] = SCSI_TST_U_RDY;
421 pccb->cmd[1] = pccb->lun << 5;
422 pccb->cmd[2] = 0;
423 pccb->cmd[3] = 0;
424 pccb->cmd[4] = 0;
425 pccb->cmd[5] = 0;
426 pccb->cmdlen = 6;
427 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
428 }
429
430 /**
431 * scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties
432 *
433 * @dev_desc: Block device description pointer
434 */
scsi_init_dev_desc_priv(struct blk_desc * dev_desc)435 static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc)
436 {
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;
446 }
447
448 #if !defined(CONFIG_DM_SCSI)
449 /**
450 * scsi_init_dev_desc - initialize all SCSI specific blk_desc properties
451 *
452 * @dev_desc: Block device description pointer
453 * @devnum: Device number
454 */
scsi_init_dev_desc(struct blk_desc * dev_desc,int devnum)455 static void scsi_init_dev_desc(struct blk_desc *dev_desc, int devnum)
456 {
457 dev_desc->lba = 0;
458 dev_desc->blksz = 0;
459 dev_desc->if_type = IF_TYPE_SCSI;
460 dev_desc->devnum = devnum;
461 dev_desc->part_type = PART_TYPE_UNKNOWN;
462
463 scsi_init_dev_desc_priv(dev_desc);
464 }
465 #endif
466
467 /**
468 * scsi_detect_dev - Detect scsi device
469 *
470 * @target: target id
471 * @lun: target lun
472 * @dev_desc: block device description
473 *
474 * The scsi_detect_dev detects and fills a dev_desc structure when the device is
475 * detected.
476 *
477 * Return: 0 on success, error value otherwise
478 */
scsi_detect_dev(struct udevice * dev,int target,int lun,struct blk_desc * dev_desc)479 static int scsi_detect_dev(struct udevice *dev, int target, int lun,
480 struct blk_desc *dev_desc)
481 {
482 unsigned char perq, modi;
483 lbaint_t capacity;
484 unsigned long blksz;
485 struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb;
486 int count, err;
487
488 pccb->target = target;
489 pccb->lun = lun;
490 pccb->pdata = (unsigned char *)&tempbuff;
491 pccb->datalen = 512;
492 pccb->dma_dir = DMA_FROM_DEVICE;
493 scsi_setup_inquiry(pccb);
494 if (scsi_exec(dev, pccb)) {
495 if (pccb->contr_stat == SCSI_SEL_TIME_OUT) {
496 /*
497 * selection timeout => assuming no
498 * device present
499 */
500 debug("Selection timeout ID %d\n",
501 pccb->target);
502 return -ETIMEDOUT;
503 }
504 scsi_print_error(pccb);
505 return -ENODEV;
506 }
507 perq = tempbuff[0];
508 modi = tempbuff[1];
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,
515 &tempbuff[8], 8);
516 scsi_ident_cpy((unsigned char *)dev_desc->product,
517 &tempbuff[16], 16);
518 scsi_ident_cpy((unsigned char *)dev_desc->revision,
519 &tempbuff[32], 4);
520 dev_desc->target = pccb->target;
521 dev_desc->lun = pccb->lun;
522
523 for (count = 0; count < 3; count++) {
524 pccb->datalen = 0;
525 scsi_setup_test_unit_ready(pccb);
526 err = scsi_exec(dev, pccb);
527 if (!err)
528 break;
529 }
530 if (err) {
531 if (dev_desc->removable) {
532 dev_desc->type = perq;
533 goto removable;
534 }
535 scsi_print_error(pccb);
536 return -EINVAL;
537 }
538 if (scsi_read_capacity(dev, pccb, &capacity, &blksz)) {
539 scsi_print_error(pccb);
540 return -EINVAL;
541 }
542 dev_desc->lba = capacity;
543 dev_desc->blksz = blksz;
544 dev_desc->log2blksz = LOG2(dev_desc->blksz);
545 dev_desc->type = perq;
546 removable:
547 return 0;
548 }
549
550 /*
551 * (re)-scan the scsi bus and reports scsi device info
552 * to the user if mode = 1
553 */
554 #if defined(CONFIG_DM_SCSI)
do_scsi_scan_one(struct udevice * dev,int id,int lun,bool verbose)555 static int do_scsi_scan_one(struct udevice *dev, int id, int lun, bool verbose)
556 {
557 int ret;
558 struct udevice *bdev;
559 struct blk_desc bd;
560 struct blk_desc *bdesc;
561 char str[10];
562
563 /*
564 * detect the scsi driver to get information about its geometry (block
565 * size, number of blocks) and other parameters (ids, type, ...)
566 */
567 scsi_init_dev_desc_priv(&bd);
568 if (scsi_detect_dev(dev, id, lun, &bd))
569 return -ENODEV;
570
571 /*
572 * Create only one block device and do detection
573 * to make sure that there won't be a lot of
574 * block devices created
575 */
576 snprintf(str, sizeof(str), "id%dlun%d", id, lun);
577 ret = blk_create_devicef(dev, "scsi_blk", str, IF_TYPE_SCSI, -1,
578 bd.blksz, bd.lba, &bdev);
579 if (ret) {
580 debug("Can't create device\n");
581 return ret;
582 }
583
584 bdesc = dev_get_uclass_plat(bdev);
585 bdesc->target = id;
586 bdesc->lun = lun;
587 bdesc->removable = bd.removable;
588 bdesc->type = bd.type;
589 memcpy(&bdesc->vendor, &bd.vendor, sizeof(bd.vendor));
590 memcpy(&bdesc->product, &bd.product, sizeof(bd.product));
591 memcpy(&bdesc->revision, &bd.revision, sizeof(bd.revision));
592 if (IS_ENABLED(CONFIG_SYS_BIG_ENDIAN)) {
593 ata_swap_buf_le16((u16 *)&bdesc->vendor, sizeof(bd.vendor) / 2);
594 ata_swap_buf_le16((u16 *)&bdesc->product, sizeof(bd.product) / 2);
595 ata_swap_buf_le16((u16 *)&bdesc->revision, sizeof(bd.revision) / 2);
596 }
597
598 if (verbose) {
599 printf(" Device %d: ", bdesc->devnum);
600 dev_print(bdesc);
601 }
602 return 0;
603 }
604
scsi_scan_dev(struct udevice * dev,bool verbose)605 int scsi_scan_dev(struct udevice *dev, bool verbose)
606 {
607 struct scsi_plat *uc_plat; /* scsi controller plat */
608 int ret;
609 int i;
610 int lun;
611
612 /* probe SCSI controller driver */
613 ret = device_probe(dev);
614 if (ret)
615 return ret;
616
617 /* Get controller plat */
618 uc_plat = dev_get_uclass_plat(dev);
619
620 for (i = 0; i < uc_plat->max_id; i++)
621 for (lun = 0; lun < uc_plat->max_lun; lun++)
622 do_scsi_scan_one(dev, i, lun, verbose);
623
624 return 0;
625 }
626
scsi_scan(bool verbose)627 int scsi_scan(bool verbose)
628 {
629 struct uclass *uc;
630 struct udevice *dev; /* SCSI controller */
631 int ret;
632
633 if (verbose)
634 printf("scanning bus for devices...\n");
635
636 blk_unbind_all(IF_TYPE_SCSI);
637
638 ret = uclass_get(UCLASS_SCSI, &uc);
639 if (ret)
640 return ret;
641
642 uclass_foreach_dev(dev, uc) {
643 ret = scsi_scan_dev(dev, verbose);
644 if (ret)
645 return ret;
646 }
647
648 return 0;
649 }
650 #else
scsi_scan(bool verbose)651 int scsi_scan(bool verbose)
652 {
653 unsigned char i, lun;
654 int ret;
655
656 if (verbose)
657 printf("scanning bus for devices...\n");
658 for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++)
659 scsi_init_dev_desc(&scsi_dev_desc[i], i);
660
661 scsi_max_devs = 0;
662 for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
663 for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) {
664 struct blk_desc *bdesc = &scsi_dev_desc[scsi_max_devs];
665
666 ret = scsi_detect_dev(NULL, i, lun, bdesc);
667 if (ret)
668 continue;
669 part_init(bdesc);
670
671 if (verbose) {
672 printf(" Device %d: ", bdesc->devnum);
673 dev_print(bdesc);
674 }
675 scsi_max_devs++;
676 } /* next LUN */
677 }
678 if (scsi_max_devs > 0)
679 scsi_curr_dev = 0;
680 else
681 scsi_curr_dev = -1;
682
683 printf("Found %d device(s).\n", scsi_max_devs);
684 #ifndef CONFIG_SPL_BUILD
685 env_set_ulong("scsidevs", scsi_max_devs);
686 #endif
687 return 0;
688 }
689 #endif
690
691 #ifdef CONFIG_BLK
692 static const struct blk_ops scsi_blk_ops = {
693 .read = scsi_read,
694 .write = scsi_write,
695 };
696
697 U_BOOT_DRIVER(scsi_blk) = {
698 .name = "scsi_blk",
699 .id = UCLASS_BLK,
700 .ops = &scsi_blk_ops,
701 };
702 #else
703 U_BOOT_LEGACY_BLK(scsi) = {
704 .if_typename = "scsi",
705 .if_type = IF_TYPE_SCSI,
706 .max_devs = CONFIG_SYS_SCSI_MAX_DEVICE,
707 .desc = scsi_dev_desc,
708 };
709 #endif
710