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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_SCSI_SYM53C8XX | |
21 | #define SCSI_VEND_ID 0x1000 | |
22 | #ifndef CONFIG_SCSI_DEV_ID | |
23 | #define SCSI_DEV_ID 0x0001 | |
24 | #else | |
25 | #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID | |
26 | #endif | |
27 | #elif defined CONFIG_SATA_ULI5288 | |
28 | ||
29 | #define SCSI_VEND_ID 0x10b9 | |
30 | #define SCSI_DEV_ID 0x5288 | |
31 | ||
32 | #elif !defined(CONFIG_SCSI_AHCI_PLAT) | |
33 | #error no scsi device defined | |
34 | #endif | |
35 | #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID} | |
36 | #endif | |
37 | #endif | |
38 | ||
39 | #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT) | |
40 | const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST }; | |
41 | #endif | |
42 | static ccb tempccb; /* temporary scsi command buffer */ | |
43 | ||
44 | static unsigned char tempbuff[512]; /* temporary data buffer */ | |
45 | ||
46 | #if !defined(CONFIG_DM_SCSI) | |
47 | static int scsi_max_devs; /* number of highest available scsi device */ | |
48 | ||
49 | static int scsi_curr_dev; /* current device */ | |
50 | ||
51 | static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE]; | |
52 | #endif | |
53 | ||
54 | /* almost the maximum amount of the scsi_ext command.. */ | |
55 | #define SCSI_MAX_READ_BLK 0xFFFF | |
56 | #define SCSI_LBA48_READ 0xFFFFFFF | |
57 | ||
58 | #ifdef CONFIG_SYS_64BIT_LBA | |
59 | void scsi_setup_read16(ccb *pccb, lbaint_t start, 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 | ||
87 | static void scsi_setup_read_ext(ccb *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 | ||
108 | static void scsi_setup_write_ext(ccb *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 | ||
130 | static void scsi_setup_inquiry(ccb *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 | |
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 | #endif | |
156 | lbaint_t start, blks; | |
157 | uintptr_t buf_addr; | |
158 | unsigned short smallblks = 0; | |
159 | ccb *pccb = (ccb *)&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 | debug("\nscsi_read: dev %d startblk " LBAF | |
168 | ", blccnt " LBAF " buffer %lx\n", | |
169 | block_dev->devnum, start, blks, (unsigned long)buffer); | |
170 | do { | |
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); | |
178 | start += blocks; | |
179 | blks -= blocks; | |
180 | } else | |
181 | #endif | |
182 | if (blks > SCSI_MAX_READ_BLK) { | |
183 | pccb->datalen = block_dev->blksz * | |
184 | SCSI_MAX_READ_BLK; | |
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; | |
189 | } else { | |
190 | pccb->datalen = block_dev->blksz * blks; | |
191 | smallblks = (unsigned short)blks; | |
192 | scsi_setup_read_ext(pccb, start, smallblks); | |
193 | start += blks; | |
194 | blks = 0; | |
195 | } | |
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); | |
201 | blkcnt -= blks; | |
202 | break; | |
203 | } | |
204 | buf_addr += pccb->datalen; | |
205 | } while (blks != 0); | |
206 | debug("scsi_read_ext: end startblk " LBAF | |
207 | ", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr); | |
208 | return blkcnt; | |
209 | } | |
210 | ||
211 | /******************************************************************************* | |
212 | * scsi_write | |
213 | */ | |
214 | ||
215 | /* Almost the maximum amount of the scsi_ext command.. */ | |
216 | #define SCSI_MAX_WRITE_BLK 0xFFFF | |
217 | ||
218 | #ifdef CONFIG_BLK | |
219 | static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt, | |
220 | const void *buffer) | |
221 | #else | |
222 | static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr, | |
223 | lbaint_t blkcnt, const void *buffer) | |
224 | #endif | |
225 | { | |
226 | #ifdef CONFIG_BLK | |
227 | struct blk_desc *block_dev = dev_get_uclass_platdata(dev); | |
228 | #endif | |
229 | lbaint_t start, blks; | |
230 | uintptr_t buf_addr; | |
231 | unsigned short smallblks; | |
232 | ccb *pccb = (ccb *)&tempccb; | |
233 | ||
234 | /* Setup device */ | |
235 | pccb->target = block_dev->target; | |
236 | pccb->lun = block_dev->lun; | |
237 | buf_addr = (unsigned long)buffer; | |
238 | start = blknr; | |
239 | blks = blkcnt; | |
240 | debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n", | |
241 | __func__, block_dev->devnum, start, blks, (unsigned long)buffer); | |
242 | do { | |
243 | pccb->pdata = (unsigned char *)buf_addr; | |
244 | if (blks > SCSI_MAX_WRITE_BLK) { | |
245 | pccb->datalen = (block_dev->blksz * | |
246 | SCSI_MAX_WRITE_BLK); | |
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; | |
251 | } else { | |
252 | pccb->datalen = block_dev->blksz * blks; | |
253 | smallblks = (unsigned short)blks; | |
254 | scsi_setup_write_ext(pccb, start, smallblks); | |
255 | start += blks; | |
256 | blks = 0; | |
257 | } | |
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); | |
262 | blkcnt -= blks; | |
263 | break; | |
264 | } | |
265 | buf_addr += pccb->datalen; | |
266 | } while (blks != 0); | |
267 | debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n", | |
268 | __func__, start, smallblks, buf_addr); | |
269 | return blkcnt; | |
270 | } | |
271 | ||
272 | #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT) | |
273 | void scsi_init(void) | |
274 | { | |
275 | int busdevfunc = -1; | |
276 | int i; | |
277 | /* | |
278 | * Find a device from the list, this driver will support a single | |
279 | * controller. | |
280 | */ | |
281 | for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) { | |
282 | /* get PCI Device ID */ | |
283 | #ifdef CONFIG_DM_PCI | |
284 | struct udevice *dev; | |
285 | int ret; | |
286 | ||
287 | ret = dm_pci_find_device(scsi_device_list[i].vendor, | |
288 | scsi_device_list[i].device, 0, &dev); | |
289 | if (!ret) { | |
290 | busdevfunc = dm_pci_get_bdf(dev); | |
291 | break; | |
292 | } | |
293 | #else | |
294 | busdevfunc = pci_find_device(scsi_device_list[i].vendor, | |
295 | scsi_device_list[i].device, | |
296 | 0); | |
297 | #endif | |
298 | if (busdevfunc != -1) | |
299 | break; | |
300 | } | |
301 | ||
302 | if (busdevfunc == -1) { | |
303 | printf("Error: SCSI Controller(s) "); | |
304 | for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) { | |
305 | printf("%04X:%04X ", | |
306 | scsi_device_list[i].vendor, | |
307 | scsi_device_list[i].device); | |
308 | } | |
309 | printf("not found\n"); | |
310 | return; | |
311 | } | |
312 | #ifdef DEBUG | |
313 | else { | |
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); | |
320 | } | |
321 | #endif | |
322 | bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci"); | |
323 | scsi_low_level_init(busdevfunc); | |
324 | scsi_scan(1); | |
325 | bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI); | |
326 | } | |
327 | #endif | |
328 | ||
329 | /* copy src to dest, skipping leading and trailing blanks | |
330 | * and null terminate the string | |
331 | */ | |
332 | static void scsi_ident_cpy(unsigned char *dest, unsigned char *src, | |
333 | unsigned int len) | |
334 | { | |
335 | int start, end; | |
336 | ||
337 | start = 0; | |
338 | while (start < len) { | |
339 | if (src[start] != ' ') | |
340 | break; | |
341 | start++; | |
342 | } | |
343 | end = len-1; | |
344 | while (end > start) { | |
345 | if (src[end] != ' ') | |
346 | break; | |
347 | end--; | |
348 | } | |
349 | for (; start <= end; start++) | |
350 | *dest ++= src[start]; | |
351 | *dest = '\0'; | |
352 | } | |
353 | ||
354 | static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, | |
355 | unsigned long *blksz) | |
356 | { | |
357 | *capacity = 0; | |
358 | ||
359 | memset(pccb->cmd, '\0', sizeof(pccb->cmd)); | |
360 | pccb->cmd[0] = SCSI_RD_CAPAC10; | |
361 | pccb->cmd[1] = pccb->lun << 5; | |
362 | pccb->cmdlen = 10; | |
363 | pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ | |
364 | ||
365 | pccb->datalen = 8; | |
366 | if (scsi_exec(pccb) != true) | |
367 | return 1; | |
368 | ||
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]); | |
373 | ||
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]); | |
380 | return 0; | |
381 | } | |
382 | ||
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; | |
386 | pccb->cmd[1] = 0x10; | |
387 | pccb->cmdlen = 16; | |
388 | pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ | |
389 | ||
390 | pccb->datalen = 16; | |
391 | if (scsi_exec(pccb) != true) | |
392 | return 1; | |
393 | ||
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]); | |
402 | ||
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]); | |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
415 | ||
416 | /* | |
417 | * Some setup (fill-in) routines | |
418 | */ | |
419 | static void scsi_setup_test_unit_ready(ccb *pccb) | |
420 | { | |
421 | pccb->cmd[0] = SCSI_TST_U_RDY; | |
422 | pccb->cmd[1] = pccb->lun << 5; | |
423 | pccb->cmd[2] = 0; | |
424 | pccb->cmd[3] = 0; | |
425 | pccb->cmd[4] = 0; | |
426 | pccb->cmd[5] = 0; | |
427 | pccb->cmdlen = 6; | |
428 | pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */ | |
429 | } | |
430 | ||
431 | /** | |
432 | * scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties | |
433 | * | |
434 | * @dev_desc: Block device description pointer | |
435 | */ | |
436 | static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc) | |
437 | { | |
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; | |
447 | #ifndef CONFIG_BLK | |
448 | dev_desc->block_read = scsi_read; | |
449 | dev_desc->block_write = scsi_write; | |
450 | #endif | |
451 | } | |
452 | ||
453 | #if !defined(CONFIG_DM_SCSI) | |
454 | /** | |
455 | * scsi_init_dev_desc - initialize all SCSI specific blk_desc properties | |
456 | * | |
457 | * @dev_desc: Block device description pointer | |
458 | * @devnum: Device number | |
459 | */ | |
460 | static void scsi_init_dev_desc(struct blk_desc *dev_desc, int devnum) | |
461 | { | |
462 | dev_desc->lba = 0; | |
463 | dev_desc->blksz = 0; | |
464 | dev_desc->if_type = IF_TYPE_SCSI; | |
465 | dev_desc->devnum = devnum; | |
466 | dev_desc->part_type = PART_TYPE_UNKNOWN; | |
467 | ||
468 | scsi_init_dev_desc_priv(dev_desc); | |
469 | } | |
470 | #endif | |
471 | ||
472 | /** | |
473 | * scsi_detect_dev - Detect scsi device | |
474 | * | |
475 | * @target: target id | |
476 | * @dev_desc: block device description | |
477 | * | |
478 | * The scsi_detect_dev detects and fills a dev_desc structure when the device is | |
479 | * detected. The LUN number is taken from the struct blk_desc *dev_desc. | |
480 | * | |
481 | * Return: 0 on success, error value otherwise | |
482 | */ | |
483 | static int scsi_detect_dev(int target, struct blk_desc *dev_desc) | |
484 | { | |
485 | unsigned char perq, modi; | |
486 | lbaint_t capacity; | |
487 | unsigned long blksz; | |
488 | ccb *pccb = (ccb *)&tempccb; | |
489 | ||
490 | pccb->target = target; | |
491 | pccb->lun = dev_desc->lun; | |
492 | pccb->pdata = (unsigned char *)&tempbuff; | |
493 | pccb->datalen = 512; | |
494 | scsi_setup_inquiry(pccb); | |
495 | if (scsi_exec(pccb) != true) { | |
496 | if (pccb->contr_stat == SCSI_SEL_TIME_OUT) { | |
497 | /* | |
498 | * selection timeout => assuming no | |
499 | * device present | |
500 | */ | |
501 | debug("Selection timeout ID %d\n", | |
502 | pccb->target); | |
503 | return -ETIMEDOUT; | |
504 | } | |
505 | scsi_print_error(pccb); | |
506 | return -ENODEV; | |
507 | } | |
508 | perq = tempbuff[0]; | |
509 | modi = tempbuff[1]; | |
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, | |
516 | &tempbuff[8], 8); | |
517 | scsi_ident_cpy((unsigned char *)dev_desc->product, | |
518 | &tempbuff[16], 16); | |
519 | scsi_ident_cpy((unsigned char *)dev_desc->revision, | |
520 | &tempbuff[32], 4); | |
521 | dev_desc->target = pccb->target; | |
522 | dev_desc->lun = pccb->lun; | |
523 | ||
524 | pccb->datalen = 0; | |
525 | scsi_setup_test_unit_ready(pccb); | |
526 | if (scsi_exec(pccb) != true) { | |
527 | if (dev_desc->removable) { | |
528 | dev_desc->type = perq; | |
529 | goto removable; | |
530 | } | |
531 | scsi_print_error(pccb); | |
532 | return -EINVAL; | |
533 | } | |
534 | if (scsi_read_capacity(pccb, &capacity, &blksz)) { | |
535 | scsi_print_error(pccb); | |
536 | return -EINVAL; | |
537 | } | |
538 | dev_desc->lba = capacity; | |
539 | dev_desc->blksz = blksz; | |
540 | dev_desc->log2blksz = LOG2(dev_desc->blksz); | |
541 | dev_desc->type = perq; | |
542 | part_init(&dev_desc[0]); | |
543 | removable: | |
544 | return 0; | |
545 | } | |
546 | ||
547 | /* | |
548 | * (re)-scan the scsi bus and reports scsi device info | |
549 | * to the user if mode = 1 | |
550 | */ | |
551 | #if defined(CONFIG_DM_SCSI) | |
552 | int scsi_scan(int mode) | |
553 | { | |
554 | unsigned char i, lun; | |
555 | struct uclass *uc; | |
556 | struct udevice *dev; /* SCSI controller */ | |
557 | int ret; | |
558 | ||
559 | if (mode == 1) | |
560 | printf("scanning bus for devices...\n"); | |
561 | ||
562 | blk_unbind_all(IF_TYPE_SCSI); | |
563 | ||
564 | ret = uclass_get(UCLASS_SCSI, &uc); | |
565 | if (ret) | |
566 | return ret; | |
567 | ||
568 | uclass_foreach_dev(dev, uc) { | |
569 | struct scsi_platdata *plat; /* scsi controller platdata */ | |
570 | ||
571 | /* probe SCSI controller driver */ | |
572 | ret = device_probe(dev); | |
573 | if (ret) | |
574 | return ret; | |
575 | ||
576 | /* Get controller platdata */ | |
577 | plat = dev_get_platdata(dev); | |
578 | ||
579 | for (i = 0; i < plat->max_id; i++) { | |
580 | for (lun = 0; lun < plat->max_lun; lun++) { | |
581 | struct udevice *bdev; /* block device */ | |
582 | /* block device description */ | |
583 | struct blk_desc *bdesc; | |
584 | char str[10]; | |
585 | ||
586 | /* | |
587 | * Create only one block device and do detection | |
588 | * to make sure that there won't be a lot of | |
589 | * block devices created | |
590 | */ | |
591 | snprintf(str, sizeof(str), "id%dlun%d", i, lun); | |
592 | ret = blk_create_devicef(dev, "scsi_blk", | |
593 | str, IF_TYPE_SCSI, | |
594 | -1, 0, 0, &bdev); | |
595 | if (ret) { | |
596 | debug("Can't create device\n"); | |
597 | return ret; | |
598 | } | |
599 | bdesc = dev_get_uclass_platdata(bdev); | |
600 | ||
601 | scsi_init_dev_desc_priv(bdesc); | |
602 | bdesc->lun = lun; | |
603 | ret = scsi_detect_dev(i, bdesc); | |
604 | if (ret) { | |
605 | device_unbind(bdev); | |
606 | continue; | |
607 | } | |
608 | ||
609 | if (mode == 1) { | |
610 | printf(" Device %d: ", 0); | |
611 | dev_print(bdesc); | |
612 | } /* if mode */ | |
613 | } /* next LUN */ | |
614 | } | |
615 | } | |
616 | ||
617 | return 0; | |
618 | } | |
619 | #else | |
620 | int scsi_scan(int mode) | |
621 | { | |
622 | unsigned char i, lun; | |
623 | int ret; | |
624 | ||
625 | if (mode == 1) | |
626 | printf("scanning bus for devices...\n"); | |
627 | for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++) | |
628 | scsi_init_dev_desc(&scsi_dev_desc[i], i); | |
629 | ||
630 | scsi_max_devs = 0; | |
631 | for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) { | |
632 | for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) { | |
633 | scsi_dev_desc[scsi_max_devs].lun = lun; | |
634 | ret = scsi_detect_dev(i, &scsi_dev_desc[scsi_max_devs]); | |
635 | if (ret) | |
636 | continue; | |
637 | ||
638 | if (mode == 1) { | |
639 | printf(" Device %d: ", 0); | |
640 | dev_print(&scsi_dev_desc[scsi_max_devs]); | |
641 | } /* if mode */ | |
642 | scsi_max_devs++; | |
643 | } /* next LUN */ | |
644 | } | |
645 | if (scsi_max_devs > 0) | |
646 | scsi_curr_dev = 0; | |
647 | else | |
648 | scsi_curr_dev = -1; | |
649 | ||
650 | printf("Found %d device(s).\n", scsi_max_devs); | |
651 | #ifndef CONFIG_SPL_BUILD | |
652 | setenv_ulong("scsidevs", scsi_max_devs); | |
653 | #endif | |
654 | return 0; | |
655 | } | |
656 | #endif | |
657 | ||
658 | #ifdef CONFIG_BLK | |
659 | static const struct blk_ops scsi_blk_ops = { | |
660 | .read = scsi_read, | |
661 | .write = scsi_write, | |
662 | }; | |
663 | ||
664 | U_BOOT_DRIVER(scsi_blk) = { | |
665 | .name = "scsi_blk", | |
666 | .id = UCLASS_BLK, | |
667 | .ops = &scsi_blk_ops, | |
668 | }; | |
669 | #else | |
670 | U_BOOT_LEGACY_BLK(scsi) = { | |
671 | .if_typename = "scsi", | |
672 | .if_type = IF_TYPE_SCSI, | |
673 | .max_devs = CONFIG_SYS_SCSI_MAX_DEVICE, | |
674 | .desc = scsi_dev_desc, | |
675 | }; | |
676 | #endif |