1 /*
2 * (C) Copyright 2001
3 * Denis Peter, MPL AG Switzerland
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <dm.h>
10 #include <inttypes.h>
11 #include <pci.h>
12 #include <scsi.h>
13 #include <dm/device-internal.h>
14 #include <dm/uclass-internal.h>
15
16 #if !defined(CONFIG_DM_SCSI)
17 # ifdef CONFIG_SCSI_DEV_LIST
18 # define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
19 # else
20 # ifdef CONFIG_SATA_ULI5288
21
22 # define SCSI_VEND_ID 0x10b9
23 # define SCSI_DEV_ID 0x5288
24
25 # elif !defined(CONFIG_SCSI_AHCI_PLAT)
26 # error no scsi device defined
27 # endif
28 # define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
29 # endif
30 #endif
31
32 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT) && \
33 !defined(CONFIG_DM_SCSI)
34 const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
35 #endif
36 static struct scsi_cmd tempccb; /* temporary scsi command buffer */
37
38 static unsigned char tempbuff[512]; /* temporary data buffer */
39
40 #if !defined(CONFIG_DM_SCSI)
41 static int scsi_max_devs; /* number of highest available scsi device */
42
43 static int scsi_curr_dev; /* current device */
44
45 static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
46 #endif
47
48 /* almost the maximum amount of the scsi_ext command.. */
49 #define SCSI_MAX_READ_BLK 0xFFFF
50 #define SCSI_LBA48_READ 0xFFFFFFF
51
scsi_print_error(struct scsi_cmd * pccb)52 static void scsi_print_error(struct scsi_cmd *pccb)
53 {
54 /* Dummy function that could print an error for debugging */
55 }
56
57 #ifdef CONFIG_SYS_64BIT_LBA
scsi_setup_read16(struct scsi_cmd * pccb,lbaint_t start,unsigned long blocks)58 void scsi_setup_read16(struct scsi_cmd *pccb, lbaint_t start,
59 unsigned long blocks)
60 {
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;
71 pccb->cmd[10] = 0;
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;
76 pccb->cmd[15] = 0;
77 pccb->cmdlen = 16;
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]);
84 }
85 #endif
86
scsi_setup_read_ext(struct scsi_cmd * pccb,lbaint_t start,unsigned short blocks)87 static void scsi_setup_read_ext(struct scsi_cmd *pccb, lbaint_t start,
88 unsigned short blocks)
89 {
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;
96 pccb->cmd[6] = 0;
97 pccb->cmd[7] = (unsigned char)(blocks >> 8) & 0xff;
98 pccb->cmd[8] = (unsigned char)blocks & 0xff;
99 pccb->cmd[6] = 0;
100 pccb->cmdlen = 10;
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]);
106 }
107
scsi_setup_write_ext(struct scsi_cmd * pccb,lbaint_t start,unsigned short blocks)108 static void scsi_setup_write_ext(struct scsi_cmd *pccb, lbaint_t start,
109 unsigned short blocks)
110 {
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;
117 pccb->cmd[6] = 0;
118 pccb->cmd[7] = ((unsigned char)(blocks >> 8)) & 0xff;
119 pccb->cmd[8] = (unsigned char)blocks & 0xff;
120 pccb->cmd[9] = 0;
121 pccb->cmdlen = 10;
122 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
123 debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
124 __func__,
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]);
128 }
129
scsi_setup_inquiry(struct scsi_cmd * pccb)130 static void scsi_setup_inquiry(struct scsi_cmd *pccb)
131 {
132 pccb->cmd[0] = SCSI_INQUIRY;
133 pccb->cmd[1] = pccb->lun << 5;
134 pccb->cmd[2] = 0;
135 pccb->cmd[3] = 0;
136 if (pccb->datalen > 255)
137 pccb->cmd[4] = 255;
138 else
139 pccb->cmd[4] = (unsigned char)pccb->datalen;
140 pccb->cmd[5] = 0;
141 pccb->cmdlen = 6;
142 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
143 }
144
145 #ifdef CONFIG_BLK
scsi_read(struct udevice * dev,lbaint_t blknr,lbaint_t blkcnt,void * buffer)146 static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
147 void *buffer)
148 #else
149 static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
150 lbaint_t blkcnt, void *buffer)
151 #endif
152 {
153 #ifdef CONFIG_BLK
154 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
155 struct udevice *bdev = dev->parent;
156 #else
157 struct udevice *bdev = NULL;
158 #endif
159 lbaint_t start, blks;
160 uintptr_t buf_addr;
161 unsigned short smallblks = 0;
162 struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb;
163
164 /* Setup device */
165 pccb->target = block_dev->target;
166 pccb->lun = block_dev->lun;
167 buf_addr = (unsigned long)buffer;
168 start = blknr;
169 blks = blkcnt;
170 debug("\nscsi_read: dev %d startblk " LBAF
171 ", blccnt " LBAF " buffer %lx\n",
172 block_dev->devnum, start, blks, (unsigned long)buffer);
173 do {
174 pccb->pdata = (unsigned char *)buf_addr;
175 pccb->dma_dir = DMA_FROM_DEVICE;
176 #ifdef CONFIG_SYS_64BIT_LBA
177 if (start > SCSI_LBA48_READ) {
178 unsigned long blocks;
179 blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK);
180 pccb->datalen = block_dev->blksz * blocks;
181 scsi_setup_read16(pccb, start, blocks);
182 start += blocks;
183 blks -= blocks;
184 } else
185 #endif
186 if (blks > SCSI_MAX_READ_BLK) {
187 pccb->datalen = block_dev->blksz *
188 SCSI_MAX_READ_BLK;
189 smallblks = SCSI_MAX_READ_BLK;
190 scsi_setup_read_ext(pccb, start, smallblks);
191 start += SCSI_MAX_READ_BLK;
192 blks -= SCSI_MAX_READ_BLK;
193 } else {
194 pccb->datalen = block_dev->blksz * blks;
195 smallblks = (unsigned short)blks;
196 scsi_setup_read_ext(pccb, start, smallblks);
197 start += blks;
198 blks = 0;
199 }
200 debug("scsi_read_ext: startblk " LBAF
201 ", blccnt %x buffer %" PRIXPTR "\n",
202 start, smallblks, buf_addr);
203 if (scsi_exec(bdev, pccb)) {
204 scsi_print_error(pccb);
205 blkcnt -= blks;
206 break;
207 }
208 buf_addr += pccb->datalen;
209 } while (blks != 0);
210 debug("scsi_read_ext: end startblk " LBAF
211 ", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr);
212 return blkcnt;
213 }
214
215 /*******************************************************************************
216 * scsi_write
217 */
218
219 /* Almost the maximum amount of the scsi_ext command.. */
220 #define SCSI_MAX_WRITE_BLK 0xFFFF
221
222 #ifdef CONFIG_BLK
scsi_write(struct udevice * dev,lbaint_t blknr,lbaint_t blkcnt,const void * buffer)223 static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
224 const void *buffer)
225 #else
226 static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
227 lbaint_t blkcnt, const void *buffer)
228 #endif
229 {
230 #ifdef CONFIG_BLK
231 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
232 struct udevice *bdev = dev->parent;
233 #else
234 struct udevice *bdev = NULL;
235 #endif
236 lbaint_t start, blks;
237 uintptr_t buf_addr;
238 unsigned short smallblks;
239 struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb;
240
241 /* Setup device */
242 pccb->target = block_dev->target;
243 pccb->lun = block_dev->lun;
244 buf_addr = (unsigned long)buffer;
245 start = blknr;
246 blks = blkcnt;
247 debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
248 __func__, block_dev->devnum, start, blks, (unsigned long)buffer);
249 do {
250 pccb->pdata = (unsigned char *)buf_addr;
251 pccb->dma_dir = DMA_TO_DEVICE;
252 if (blks > SCSI_MAX_WRITE_BLK) {
253 pccb->datalen = (block_dev->blksz *
254 SCSI_MAX_WRITE_BLK);
255 smallblks = SCSI_MAX_WRITE_BLK;
256 scsi_setup_write_ext(pccb, start, smallblks);
257 start += SCSI_MAX_WRITE_BLK;
258 blks -= SCSI_MAX_WRITE_BLK;
259 } else {
260 pccb->datalen = block_dev->blksz * blks;
261 smallblks = (unsigned short)blks;
262 scsi_setup_write_ext(pccb, start, smallblks);
263 start += blks;
264 blks = 0;
265 }
266 debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
267 __func__, start, smallblks, buf_addr);
268 if (scsi_exec(bdev, pccb)) {
269 scsi_print_error(pccb);
270 blkcnt -= blks;
271 break;
272 }
273 buf_addr += pccb->datalen;
274 } while (blks != 0);
275 debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
276 __func__, start, smallblks, buf_addr);
277 return blkcnt;
278 }
279
280 #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT) && \
281 !defined(CONFIG_DM_SCSI)
scsi_init(void)282 void scsi_init(void)
283 {
284 int busdevfunc = -1;
285 int i;
286 /*
287 * Find a device from the list, this driver will support a single
288 * controller.
289 */
290 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
291 /* get PCI Device ID */
292 #ifdef CONFIG_DM_PCI
293 struct udevice *dev;
294 int ret;
295
296 ret = dm_pci_find_device(scsi_device_list[i].vendor,
297 scsi_device_list[i].device, 0, &dev);
298 if (!ret) {
299 busdevfunc = dm_pci_get_bdf(dev);
300 break;
301 }
302 #else
303 busdevfunc = pci_find_device(scsi_device_list[i].vendor,
304 scsi_device_list[i].device,
305 0);
306 #endif
307 if (busdevfunc != -1)
308 break;
309 }
310
311 if (busdevfunc == -1) {
312 printf("Error: SCSI Controller(s) ");
313 for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
314 printf("%04X:%04X ",
315 scsi_device_list[i].vendor,
316 scsi_device_list[i].device);
317 }
318 printf("not found\n");
319 return;
320 }
321 #ifdef DEBUG
322 else {
323 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
324 scsi_device_list[i].vendor,
325 scsi_device_list[i].device,
326 (busdevfunc >> 16) & 0xFF,
327 (busdevfunc >> 11) & 0x1F,
328 (busdevfunc >> 8) & 0x7);
329 }
330 #endif
331 bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
332 scsi_low_level_init(busdevfunc);
333 scsi_scan(true);
334 bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
335 }
336 #endif
337
338 /* copy src to dest, skipping leading and trailing blanks
339 * and null terminate the string
340 */
scsi_ident_cpy(unsigned char * dest,unsigned char * src,unsigned int len)341 static void scsi_ident_cpy(unsigned char *dest, unsigned char *src,
342 unsigned int len)
343 {
344 int start, end;
345
346 start = 0;
347 while (start < len) {
348 if (src[start] != ' ')
349 break;
350 start++;
351 }
352 end = len-1;
353 while (end > start) {
354 if (src[end] != ' ')
355 break;
356 end--;
357 }
358 for (; start <= end; start++)
359 *dest ++= src[start];
360 *dest = '\0';
361 }
362
scsi_read_capacity(struct udevice * dev,struct scsi_cmd * pccb,lbaint_t * capacity,unsigned long * blksz)363 static int scsi_read_capacity(struct udevice *dev, struct scsi_cmd *pccb,
364 lbaint_t *capacity, unsigned long *blksz)
365 {
366 *capacity = 0;
367
368 memset(pccb->cmd, '\0', sizeof(pccb->cmd));
369 pccb->cmd[0] = SCSI_RD_CAPAC10;
370 pccb->cmd[1] = pccb->lun << 5;
371 pccb->cmdlen = 10;
372 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
373
374 pccb->datalen = 8;
375 if (scsi_exec(dev, pccb))
376 return 1;
377
378 *capacity = ((lbaint_t)pccb->pdata[0] << 24) |
379 ((lbaint_t)pccb->pdata[1] << 16) |
380 ((lbaint_t)pccb->pdata[2] << 8) |
381 ((lbaint_t)pccb->pdata[3]);
382
383 if (*capacity != 0xffffffff) {
384 /* Read capacity (10) was sufficient for this drive. */
385 *blksz = ((unsigned long)pccb->pdata[4] << 24) |
386 ((unsigned long)pccb->pdata[5] << 16) |
387 ((unsigned long)pccb->pdata[6] << 8) |
388 ((unsigned long)pccb->pdata[7]);
389 return 0;
390 }
391
392 /* Read capacity (10) was insufficient. Use read capacity (16). */
393 memset(pccb->cmd, '\0', sizeof(pccb->cmd));
394 pccb->cmd[0] = SCSI_RD_CAPAC16;
395 pccb->cmd[1] = 0x10;
396 pccb->cmdlen = 16;
397 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
398
399 pccb->datalen = 16;
400 pccb->dma_dir = DMA_FROM_DEVICE;
401 if (scsi_exec(dev, pccb))
402 return 1;
403
404 *capacity = ((uint64_t)pccb->pdata[0] << 56) |
405 ((uint64_t)pccb->pdata[1] << 48) |
406 ((uint64_t)pccb->pdata[2] << 40) |
407 ((uint64_t)pccb->pdata[3] << 32) |
408 ((uint64_t)pccb->pdata[4] << 24) |
409 ((uint64_t)pccb->pdata[5] << 16) |
410 ((uint64_t)pccb->pdata[6] << 8) |
411 ((uint64_t)pccb->pdata[7]);
412
413 *blksz = ((uint64_t)pccb->pdata[8] << 56) |
414 ((uint64_t)pccb->pdata[9] << 48) |
415 ((uint64_t)pccb->pdata[10] << 40) |
416 ((uint64_t)pccb->pdata[11] << 32) |
417 ((uint64_t)pccb->pdata[12] << 24) |
418 ((uint64_t)pccb->pdata[13] << 16) |
419 ((uint64_t)pccb->pdata[14] << 8) |
420 ((uint64_t)pccb->pdata[15]);
421
422 return 0;
423 }
424
425
426 /*
427 * Some setup (fill-in) routines
428 */
scsi_setup_test_unit_ready(struct scsi_cmd * pccb)429 static void scsi_setup_test_unit_ready(struct scsi_cmd *pccb)
430 {
431 pccb->cmd[0] = SCSI_TST_U_RDY;
432 pccb->cmd[1] = pccb->lun << 5;
433 pccb->cmd[2] = 0;
434 pccb->cmd[3] = 0;
435 pccb->cmd[4] = 0;
436 pccb->cmd[5] = 0;
437 pccb->cmdlen = 6;
438 pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
439 }
440
441 /**
442 * scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties
443 *
444 * @dev_desc: Block device description pointer
445 */
scsi_init_dev_desc_priv(struct blk_desc * dev_desc)446 static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc)
447 {
448 dev_desc->target = 0xff;
449 dev_desc->lun = 0xff;
450 dev_desc->log2blksz =
451 LOG2_INVALID(typeof(dev_desc->log2blksz));
452 dev_desc->type = DEV_TYPE_UNKNOWN;
453 dev_desc->vendor[0] = 0;
454 dev_desc->product[0] = 0;
455 dev_desc->revision[0] = 0;
456 dev_desc->removable = false;
457 #if !CONFIG_IS_ENABLED(BLK)
458 dev_desc->block_read = scsi_read;
459 dev_desc->block_write = scsi_write;
460 #endif
461 }
462
463 #if !defined(CONFIG_DM_SCSI)
464 /**
465 * scsi_init_dev_desc - initialize all SCSI specific blk_desc properties
466 *
467 * @dev_desc: Block device description pointer
468 * @devnum: Device number
469 */
scsi_init_dev_desc(struct blk_desc * dev_desc,int devnum)470 static void scsi_init_dev_desc(struct blk_desc *dev_desc, int devnum)
471 {
472 dev_desc->lba = 0;
473 dev_desc->blksz = 0;
474 dev_desc->if_type = IF_TYPE_SCSI;
475 dev_desc->devnum = devnum;
476 dev_desc->part_type = PART_TYPE_UNKNOWN;
477
478 scsi_init_dev_desc_priv(dev_desc);
479 }
480 #endif
481
482 /**
483 * scsi_detect_dev - Detect scsi device
484 *
485 * @target: target id
486 * @lun: target lun
487 * @dev_desc: block device description
488 *
489 * The scsi_detect_dev detects and fills a dev_desc structure when the device is
490 * detected.
491 *
492 * Return: 0 on success, error value otherwise
493 */
scsi_detect_dev(struct udevice * dev,int target,int lun,struct blk_desc * dev_desc)494 static int scsi_detect_dev(struct udevice *dev, int target, int lun,
495 struct blk_desc *dev_desc)
496 {
497 unsigned char perq, modi;
498 lbaint_t capacity;
499 unsigned long blksz;
500 struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb;
501
502 pccb->target = target;
503 pccb->lun = lun;
504 pccb->pdata = (unsigned char *)&tempbuff;
505 pccb->datalen = 512;
506 pccb->dma_dir = DMA_FROM_DEVICE;
507 scsi_setup_inquiry(pccb);
508 if (scsi_exec(dev, pccb)) {
509 if (pccb->contr_stat == SCSI_SEL_TIME_OUT) {
510 /*
511 * selection timeout => assuming no
512 * device present
513 */
514 debug("Selection timeout ID %d\n",
515 pccb->target);
516 return -ETIMEDOUT;
517 }
518 scsi_print_error(pccb);
519 return -ENODEV;
520 }
521 perq = tempbuff[0];
522 modi = tempbuff[1];
523 if ((perq & 0x1f) == 0x1f)
524 return -ENODEV; /* skip unknown devices */
525 if ((modi & 0x80) == 0x80) /* drive is removable */
526 dev_desc->removable = true;
527 /* get info for this device */
528 scsi_ident_cpy((unsigned char *)dev_desc->vendor,
529 &tempbuff[8], 8);
530 scsi_ident_cpy((unsigned char *)dev_desc->product,
531 &tempbuff[16], 16);
532 scsi_ident_cpy((unsigned char *)dev_desc->revision,
533 &tempbuff[32], 4);
534 dev_desc->target = pccb->target;
535 dev_desc->lun = pccb->lun;
536
537 pccb->datalen = 0;
538 scsi_setup_test_unit_ready(pccb);
539 if (scsi_exec(dev, pccb)) {
540 if (dev_desc->removable) {
541 dev_desc->type = perq;
542 goto removable;
543 }
544 scsi_print_error(pccb);
545 return -EINVAL;
546 }
547 if (scsi_read_capacity(dev, pccb, &capacity, &blksz)) {
548 scsi_print_error(pccb);
549 return -EINVAL;
550 }
551 dev_desc->lba = capacity;
552 dev_desc->blksz = blksz;
553 dev_desc->log2blksz = LOG2(dev_desc->blksz);
554 dev_desc->type = perq;
555 removable:
556 return 0;
557 }
558
559 /*
560 * (re)-scan the scsi bus and reports scsi device info
561 * to the user if mode = 1
562 */
563 #if defined(CONFIG_DM_SCSI)
do_scsi_scan_one(struct udevice * dev,int id,int lun,bool verbose)564 static int do_scsi_scan_one(struct udevice *dev, int id, int lun, bool verbose)
565 {
566 int ret;
567 struct udevice *bdev;
568 struct blk_desc bd;
569 struct blk_desc *bdesc;
570 char str[10];
571
572 /*
573 * detect the scsi driver to get information about its geometry (block
574 * size, number of blocks) and other parameters (ids, type, ...)
575 */
576 scsi_init_dev_desc_priv(&bd);
577 if (scsi_detect_dev(dev, id, lun, &bd))
578 return -ENODEV;
579
580 /*
581 * Create only one block device and do detection
582 * to make sure that there won't be a lot of
583 * block devices created
584 */
585 snprintf(str, sizeof(str), "id%dlun%d", id, lun);
586 ret = blk_create_devicef(dev, "scsi_blk", str, IF_TYPE_SCSI, -1,
587 bd.blksz, bd.blksz * bd.lba, &bdev);
588 if (ret) {
589 debug("Can't create device\n");
590 return ret;
591 }
592
593 bdesc = dev_get_uclass_platdata(bdev);
594 bdesc->target = id;
595 bdesc->lun = lun;
596 bdesc->removable = bd.removable;
597 bdesc->type = bd.type;
598 memcpy(&bdesc->vendor, &bd.vendor, sizeof(bd.vendor));
599 memcpy(&bdesc->product, &bd.product, sizeof(bd.product));
600 memcpy(&bdesc->revision, &bd.revision, sizeof(bd.revision));
601 part_init(bdesc);
602
603 if (verbose) {
604 printf(" Device %d: ", 0);
605 dev_print(bdesc);
606 }
607 return 0;
608 }
609
scsi_scan_dev(struct udevice * dev,bool verbose)610 int scsi_scan_dev(struct udevice *dev, bool verbose)
611 {
612 struct scsi_platdata *uc_plat; /* scsi controller platdata */
613 int ret;
614 int i;
615 int lun;
616
617 /* probe SCSI controller driver */
618 ret = device_probe(dev);
619 if (ret)
620 return ret;
621
622 /* Get controller platdata */
623 uc_plat = dev_get_uclass_platdata(dev);
624
625 for (i = 0; i < uc_plat->max_id; i++)
626 for (lun = 0; lun < uc_plat->max_lun; lun++)
627 do_scsi_scan_one(dev, i, lun, verbose);
628
629 return 0;
630 }
631
scsi_scan(bool verbose)632 int scsi_scan(bool verbose)
633 {
634 struct uclass *uc;
635 struct udevice *dev; /* SCSI controller */
636 int ret;
637
638 if (verbose)
639 printf("scanning bus for devices...\n");
640
641 blk_unbind_all(IF_TYPE_SCSI);
642
643 ret = uclass_get(UCLASS_SCSI, &uc);
644 if (ret)
645 return ret;
646
647 uclass_foreach_dev(dev, uc) {
648 ret = scsi_scan_dev(dev, verbose);
649 if (ret)
650 return ret;
651 }
652
653 return 0;
654 }
655 #else
scsi_scan(bool verbose)656 int scsi_scan(bool verbose)
657 {
658 unsigned char i, lun;
659 int ret;
660
661 if (verbose)
662 printf("scanning bus for devices...\n");
663 for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++)
664 scsi_init_dev_desc(&scsi_dev_desc[i], i);
665
666 scsi_max_devs = 0;
667 for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
668 for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) {
669 ret = scsi_detect_dev(NULL, i, lun,
670 &scsi_dev_desc[scsi_max_devs]);
671 if (ret)
672 continue;
673 part_init(&scsi_dev_desc[scsi_max_devs]);
674
675 if (verbose) {
676 printf(" Device %d: ", 0);
677 dev_print(&scsi_dev_desc[scsi_max_devs]);
678 }
679 scsi_max_devs++;
680 } /* next LUN */
681 }
682 if (scsi_max_devs > 0)
683 scsi_curr_dev = 0;
684 else
685 scsi_curr_dev = -1;
686
687 printf("Found %d device(s).\n", scsi_max_devs);
688 #ifndef CONFIG_SPL_BUILD
689 env_set_ulong("scsidevs", scsi_max_devs);
690 #endif
691 return 0;
692 }
693 #endif
694
695 #ifdef CONFIG_BLK
696 static const struct blk_ops scsi_blk_ops = {
697 .read = scsi_read,
698 .write = scsi_write,
699 };
700
701 U_BOOT_DRIVER(scsi_blk) = {
702 .name = "scsi_blk",
703 .id = UCLASS_BLK,
704 .ops = &scsi_blk_ops,
705 };
706 #else
707 U_BOOT_LEGACY_BLK(scsi) = {
708 .if_typename = "scsi",
709 .if_type = IF_TYPE_SCSI,
710 .max_devs = CONFIG_SYS_SCSI_MAX_DEVICE,
711 .desc = scsi_dev_desc,
712 };
713 #endif
714