blob: e7efa5ae797ca1846798a542ba8557f8124708fd [file] [log] [blame]
Simon Glass11f610e2016-05-01 11:36:09 -06001/*
2 * (C) Copyright 2001
3 * Denis Peter, MPL AG Switzerland
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8#include <common.h>
Simon Glass535556b2016-05-01 11:36:24 -06009#include <dm.h>
Simon Glass11f610e2016-05-01 11:36:09 -060010#include <inttypes.h>
11#include <pci.h>
12#include <scsi.h>
Michal Simeke8a016b2016-09-08 15:06:45 +020013#include <dm/device-internal.h>
14#include <dm/uclass-internal.h>
Simon Glass11f610e2016-05-01 11:36:09 -060015
Michal Simeke8a016b2016-09-08 15:06:45 +020016#if !defined(CONFIG_DM_SCSI)
Simon Glass11f610e2016-05-01 11:36:09 -060017#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
Michal Simeke8a016b2016-09-08 15:06:45 +020037#endif
Simon Glass11f610e2016-05-01 11:36:09 -060038
39#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
40const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
41#endif
42static ccb tempccb; /* temporary scsi command buffer */
43
44static unsigned char tempbuff[512]; /* temporary data buffer */
45
Michal Simeke8a016b2016-09-08 15:06:45 +020046#if !defined(CONFIG_DM_SCSI)
Simon Glass11f610e2016-05-01 11:36:09 -060047static int scsi_max_devs; /* number of highest available scsi device */
48
49static int scsi_curr_dev; /* current device */
50
51static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
Michal Simeke8a016b2016-09-08 15:06:45 +020052#endif
Simon Glass11f610e2016-05-01 11:36:09 -060053
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
59void 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
Michal Simek545a2842016-11-30 11:53:43 +010087static void scsi_setup_read_ext(ccb *pccb, lbaint_t start,
88 unsigned short blocks)
Simon Glass11f610e2016-05-01 11:36:09 -060089{
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
Michal Simek545a2842016-11-30 11:53:43 +0100108static void scsi_setup_write_ext(ccb *pccb, lbaint_t start,
109 unsigned short blocks)
Simon Glass11f610e2016-05-01 11:36:09 -0600110{
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
Michal Simek545a2842016-11-30 11:53:43 +0100130static void scsi_setup_inquiry(ccb *pccb)
Simon Glass11f610e2016-05-01 11:36:09 -0600131{
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
Simon Glass535556b2016-05-01 11:36:24 -0600145#ifdef CONFIG_BLK
146static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
147 void *buffer)
148#else
Simon Glass11f610e2016-05-01 11:36:09 -0600149static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
150 lbaint_t blkcnt, void *buffer)
Simon Glass535556b2016-05-01 11:36:24 -0600151#endif
Simon Glass11f610e2016-05-01 11:36:09 -0600152{
Simon Glass535556b2016-05-01 11:36:24 -0600153#ifdef CONFIG_BLK
154 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
155#endif
Simon Glass11f610e2016-05-01 11:36:09 -0600156 lbaint_t start, blks;
157 uintptr_t buf_addr;
158 unsigned short smallblks = 0;
159 ccb *pccb = (ccb *)&tempccb;
Simon Glass11f610e2016-05-01 11:36:09 -0600160
161 /* Setup device */
Michal Simekcdb93b22016-11-18 16:22:42 +0100162 pccb->target = block_dev->target;
163 pccb->lun = block_dev->lun;
Simon Glass11f610e2016-05-01 11:36:09 -0600164 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",
Michal Simekcdb93b22016-11-18 16:22:42 +0100169 block_dev->devnum, start, blks, (unsigned long)buffer);
Simon Glass11f610e2016-05-01 11:36:09 -0600170 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);
Michal Simekcdb93b22016-11-18 16:22:42 +0100176 pccb->datalen = block_dev->blksz * blocks;
Simon Glass11f610e2016-05-01 11:36:09 -0600177 scsi_setup_read16(pccb, start, blocks);
178 start += blocks;
179 blks -= blocks;
180 } else
181#endif
182 if (blks > SCSI_MAX_READ_BLK) {
Michal Simekcdb93b22016-11-18 16:22:42 +0100183 pccb->datalen = block_dev->blksz *
Simon Glass11f610e2016-05-01 11:36:09 -0600184 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 {
Michal Simekcdb93b22016-11-18 16:22:42 +0100190 pccb->datalen = block_dev->blksz * blks;
Simon Glass11f610e2016-05-01 11:36:09 -0600191 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
Simon Glass535556b2016-05-01 11:36:24 -0600218#ifdef CONFIG_BLK
219static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
220 const void *buffer)
221#else
Simon Glass11f610e2016-05-01 11:36:09 -0600222static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
223 lbaint_t blkcnt, const void *buffer)
Simon Glass535556b2016-05-01 11:36:24 -0600224#endif
Simon Glass11f610e2016-05-01 11:36:09 -0600225{
Simon Glass535556b2016-05-01 11:36:24 -0600226#ifdef CONFIG_BLK
227 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
228#endif
Simon Glass11f610e2016-05-01 11:36:09 -0600229 lbaint_t start, blks;
230 uintptr_t buf_addr;
231 unsigned short smallblks;
232 ccb *pccb = (ccb *)&tempccb;
233
Simon Glass11f610e2016-05-01 11:36:09 -0600234 /* Setup device */
Michal Simekcdb93b22016-11-18 16:22:42 +0100235 pccb->target = block_dev->target;
236 pccb->lun = block_dev->lun;
Simon Glass11f610e2016-05-01 11:36:09 -0600237 buf_addr = (unsigned long)buffer;
238 start = blknr;
239 blks = blkcnt;
240 debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
Michal Simekcdb93b22016-11-18 16:22:42 +0100241 __func__, block_dev->devnum, start, blks, (unsigned long)buffer);
Simon Glass11f610e2016-05-01 11:36:09 -0600242 do {
243 pccb->pdata = (unsigned char *)buf_addr;
244 if (blks > SCSI_MAX_WRITE_BLK) {
Michal Simekcdb93b22016-11-18 16:22:42 +0100245 pccb->datalen = (block_dev->blksz *
Simon Glass11f610e2016-05-01 11:36:09 -0600246 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 {
Michal Simekcdb93b22016-11-18 16:22:42 +0100252 pccb->datalen = block_dev->blksz * blks;
Simon Glass11f610e2016-05-01 11:36:09 -0600253 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
Simon Glass11f610e2016-05-01 11:36:09 -0600272#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
273void 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
Simon Glass11f610e2016-05-01 11:36:09 -0600329/* copy src to dest, skipping leading and trailing blanks
330 * and null terminate the string
331 */
Michal Simek545a2842016-11-30 11:53:43 +0100332static void scsi_ident_cpy(unsigned char *dest, unsigned char *src,
333 unsigned int len)
Simon Glass11f610e2016-05-01 11:36:09 -0600334{
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
Michal Simek545a2842016-11-30 11:53:43 +0100354static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity,
355 unsigned long *blksz)
Simon Glass11f610e2016-05-01 11:36:09 -0600356{
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 */
Michal Simek545a2842016-11-30 11:53:43 +0100419static void scsi_setup_test_unit_ready(ccb *pccb)
Simon Glass11f610e2016-05-01 11:36:09 -0600420{
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
Michal Simek0b3a58e2016-11-30 12:50:58 +0100431/**
432 * scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties
433 *
434 * @dev_desc: Block device description pointer
435 */
436static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc)
Michal Simek92ca4762016-11-18 15:27:00 +0100437{
438 dev_desc->target = 0xff;
439 dev_desc->lun = 0xff;
Michal Simek92ca4762016-11-18 15:27:00 +0100440 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;
Michal Simek92ca4762016-11-18 15:27:00 +0100447#ifndef CONFIG_BLK
448 dev_desc->block_read = scsi_read;
449 dev_desc->block_write = scsi_write;
450#endif
451}
452
Michal Simeke8a016b2016-09-08 15:06:45 +0200453#if !defined(CONFIG_DM_SCSI)
Michal Simek0b3a58e2016-11-30 12:50:58 +0100454/**
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 */
460static 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}
Michal Simeke8a016b2016-09-08 15:06:45 +0200470#endif
Michal Simekbccfd9e2016-11-18 16:14:24 +0100471
Michal Simek570712f2016-11-18 15:42:13 +0100472/**
473 * scsi_detect_dev - Detect scsi device
474 *
Michal Simekbccfd9e2016-11-18 16:14:24 +0100475 * @target: target id
Michal Simek570712f2016-11-18 15:42:13 +0100476 * @dev_desc: block device description
Michal Simek570712f2016-11-18 15:42:13 +0100477 *
478 * The scsi_detect_dev detects and fills a dev_desc structure when the device is
Michal Simek4dbee172016-11-18 15:52:51 +0100479 * detected. The LUN number is taken from the struct blk_desc *dev_desc.
Michal Simek570712f2016-11-18 15:42:13 +0100480 *
481 * Return: 0 on success, error value otherwise
482 */
Michal Simekbccfd9e2016-11-18 16:14:24 +0100483static int scsi_detect_dev(int target, struct blk_desc *dev_desc)
Michal Simek570712f2016-11-18 15:42:13 +0100484{
485 unsigned char perq, modi;
486 lbaint_t capacity;
487 unsigned long blksz;
Michal Simekbccfd9e2016-11-18 16:14:24 +0100488 ccb *pccb = (ccb *)&tempccb;
Michal Simek570712f2016-11-18 15:42:13 +0100489
Michal Simekbccfd9e2016-11-18 16:14:24 +0100490 pccb->target = target;
Michal Simek4dbee172016-11-18 15:52:51 +0100491 pccb->lun = dev_desc->lun;
Michal Simek570712f2016-11-18 15:42:13 +0100492 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]);
543removable:
544 return 0;
545}
546
Simon Glass11f610e2016-05-01 11:36:09 -0600547/*
548 * (re)-scan the scsi bus and reports scsi device info
549 * to the user if mode = 1
550 */
Michal Simeke8a016b2016-09-08 15:06:45 +0200551#if defined(CONFIG_DM_SCSI)
552int 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 ret = uclass_get(UCLASS_SCSI, &uc);
563 if (ret)
564 return ret;
565
566 uclass_foreach_dev(dev, uc) {
567 struct scsi_platdata *plat; /* scsi controller platdata */
568
569 /* probe SCSI controller driver */
570 ret = device_probe(dev);
571 if (ret)
572 return ret;
573
574 /* Get controller platdata */
575 plat = dev_get_platdata(dev);
576
577 for (i = 0; i < plat->max_id; i++) {
578 for (lun = 0; lun < plat->max_lun; lun++) {
579 struct udevice *bdev; /* block device */
580 /* block device description */
581 struct blk_desc *bdesc;
582 char str[10];
583
584 /*
585 * Create only one block device and do detection
586 * to make sure that there won't be a lot of
587 * block devices created
588 */
589 snprintf(str, sizeof(str), "id%dlun%d", i, lun);
590 ret = blk_create_devicef(dev, "scsi_blk",
591 str, IF_TYPE_SCSI,
592 -1, 0, 0, &bdev);
593 if (ret) {
594 debug("Can't create device\n");
595 return ret;
596 }
597 bdesc = dev_get_uclass_platdata(bdev);
598
599 scsi_init_dev_desc_priv(bdesc);
600 bdesc->lun = lun;
601 ret = scsi_detect_dev(i, bdesc);
602 if (ret) {
603 device_unbind(bdev);
604 continue;
605 }
606
607 if (mode == 1) {
608 printf(" Device %d: ", 0);
609 dev_print(bdesc);
610 } /* if mode */
611 } /* next LUN */
612 }
613 }
614
615 return 0;
616}
617#else
Michal Simekc002e392016-11-30 12:12:31 +0100618int scsi_scan(int mode)
Simon Glass11f610e2016-05-01 11:36:09 -0600619{
Michal Simek570712f2016-11-18 15:42:13 +0100620 unsigned char i, lun;
621 int ret;
Simon Glass11f610e2016-05-01 11:36:09 -0600622
623 if (mode == 1)
624 printf("scanning bus for devices...\n");
Michal Simek92ca4762016-11-18 15:27:00 +0100625 for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++)
626 scsi_init_dev_desc(&scsi_dev_desc[i], i);
627
Simon Glass11f610e2016-05-01 11:36:09 -0600628 scsi_max_devs = 0;
629 for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
Simon Glass11f610e2016-05-01 11:36:09 -0600630 for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) {
Michal Simek4dbee172016-11-18 15:52:51 +0100631 scsi_dev_desc[scsi_max_devs].lun = lun;
Michal Simekbccfd9e2016-11-18 16:14:24 +0100632 ret = scsi_detect_dev(i, &scsi_dev_desc[scsi_max_devs]);
Michal Simek570712f2016-11-18 15:42:13 +0100633 if (ret)
Simon Glass11f610e2016-05-01 11:36:09 -0600634 continue;
Simon Glass11f610e2016-05-01 11:36:09 -0600635
Simon Glass11f610e2016-05-01 11:36:09 -0600636 if (mode == 1) {
Michal Simek570712f2016-11-18 15:42:13 +0100637 printf(" Device %d: ", 0);
Simon Glass11f610e2016-05-01 11:36:09 -0600638 dev_print(&scsi_dev_desc[scsi_max_devs]);
639 } /* if mode */
640 scsi_max_devs++;
641 } /* next LUN */
642 }
643 if (scsi_max_devs > 0)
644 scsi_curr_dev = 0;
645 else
646 scsi_curr_dev = -1;
647
648 printf("Found %d device(s).\n", scsi_max_devs);
649#ifndef CONFIG_SPL_BUILD
650 setenv_ulong("scsidevs", scsi_max_devs);
651#endif
Michal Simekc002e392016-11-30 12:12:31 +0100652 return 0;
Simon Glass11f610e2016-05-01 11:36:09 -0600653}
Michal Simeke8a016b2016-09-08 15:06:45 +0200654#endif
Simon Glass11f610e2016-05-01 11:36:09 -0600655
Simon Glass535556b2016-05-01 11:36:24 -0600656#ifdef CONFIG_BLK
657static const struct blk_ops scsi_blk_ops = {
658 .read = scsi_read,
659 .write = scsi_write,
660};
661
662U_BOOT_DRIVER(scsi_blk) = {
663 .name = "scsi_blk",
664 .id = UCLASS_BLK,
665 .ops = &scsi_blk_ops,
666};
667#else
Simon Glass11f610e2016-05-01 11:36:09 -0600668U_BOOT_LEGACY_BLK(scsi) = {
Ed Swarthout69c125f2016-06-01 08:11:24 -0500669 .if_typename = "scsi",
Simon Glass11f610e2016-05-01 11:36:09 -0600670 .if_type = IF_TYPE_SCSI,
671 .max_devs = CONFIG_SYS_SCSI_MAX_DEVICE,
672 .desc = scsi_dev_desc,
673};
Simon Glass535556b2016-05-01 11:36:24 -0600674#endif