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[thirdparty/u-boot.git] / common / usb_storage.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Most of this source has been derived from the Linux USB
4 * project:
5 * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
6 * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org)
7 * (c) 1999 Michael Gee (michael@linuxspecific.com)
8 * (c) 2000 Yggdrasil Computing, Inc.
9 *
10 *
11 * Adapted for U-Boot:
12 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
13 * Driver model conversion:
14 * (C) Copyright 2015 Google, Inc
15 *
16 * For BBB support (C) Copyright 2003
17 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
18 *
19 * BBB support based on /sys/dev/usb/umass.c from
20 * FreeBSD.
21 */
22
23 /* Note:
24 * Currently only the CBI transport protocoll has been implemented, and it
25 * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
26 * transport protocoll may work as well.
27 */
28 /*
29 * New Note:
30 * Support for USB Mass Storage Devices (BBB) has been added. It has
31 * only been tested with USB memory sticks.
32 */
33
34
35 #include <common.h>
36 #include <command.h>
37 #include <dm.h>
38 #include <errno.h>
39 #include <mapmem.h>
40 #include <memalign.h>
41 #include <asm/byteorder.h>
42 #include <asm/cache.h>
43 #include <asm/processor.h>
44 #include <dm/device-internal.h>
45 #include <dm/lists.h>
46
47 #include <part.h>
48 #include <usb.h>
49
50 #undef BBB_COMDAT_TRACE
51 #undef BBB_XPORT_TRACE
52
53 #include <scsi.h>
54 /* direction table -- this indicates the direction of the data
55 * transfer for each command code -- a 1 indicates input
56 */
57 static const unsigned char us_direction[256/8] = {
58 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
59 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
60 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
61 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
62 };
63 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
64
65 static struct scsi_cmd usb_ccb __aligned(ARCH_DMA_MINALIGN);
66 static __u32 CBWTag;
67
68 static int usb_max_devs; /* number of highest available usb device */
69
70 #if !CONFIG_IS_ENABLED(BLK)
71 static struct blk_desc usb_dev_desc[USB_MAX_STOR_DEV];
72 #endif
73
74 struct us_data;
75 typedef int (*trans_cmnd)(struct scsi_cmd *cb, struct us_data *data);
76 typedef int (*trans_reset)(struct us_data *data);
77
78 struct us_data {
79 struct usb_device *pusb_dev; /* this usb_device */
80
81 unsigned int flags; /* from filter initially */
82 # define USB_READY (1 << 0)
83 unsigned char ifnum; /* interface number */
84 unsigned char ep_in; /* in endpoint */
85 unsigned char ep_out; /* out ....... */
86 unsigned char ep_int; /* interrupt . */
87 unsigned char subclass; /* as in overview */
88 unsigned char protocol; /* .............. */
89 unsigned char attention_done; /* force attn on first cmd */
90 unsigned short ip_data; /* interrupt data */
91 int action; /* what to do */
92 int ip_wanted; /* needed */
93 int *irq_handle; /* for USB int requests */
94 unsigned int irqpipe; /* pipe for release_irq */
95 unsigned char irqmaxp; /* max packed for irq Pipe */
96 unsigned char irqinterval; /* Intervall for IRQ Pipe */
97 struct scsi_cmd *srb; /* current srb */
98 trans_reset transport_reset; /* reset routine */
99 trans_cmnd transport; /* transport routine */
100 unsigned short max_xfer_blk; /* maximum transfer blocks */
101 };
102
103 #if !CONFIG_IS_ENABLED(BLK)
104 static struct us_data usb_stor[USB_MAX_STOR_DEV];
105 #endif
106
107 #define USB_STOR_TRANSPORT_GOOD 0
108 #define USB_STOR_TRANSPORT_FAILED -1
109 #define USB_STOR_TRANSPORT_ERROR -2
110
111 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
112 struct blk_desc *dev_desc);
113 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
114 struct us_data *ss);
115 #if CONFIG_IS_ENABLED(BLK)
116 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr,
117 lbaint_t blkcnt, void *buffer);
118 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr,
119 lbaint_t blkcnt, const void *buffer);
120 #else
121 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
122 lbaint_t blkcnt, void *buffer);
123 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr,
124 lbaint_t blkcnt, const void *buffer);
125 #endif
126 void uhci_show_temp_int_td(void);
127
128 static void usb_show_progress(void)
129 {
130 debug(".");
131 }
132
133 /*******************************************************************************
134 * show info on storage devices; 'usb start/init' must be invoked earlier
135 * as we only retrieve structures populated during devices initialization
136 */
137 int usb_stor_info(void)
138 {
139 int count = 0;
140 #if CONFIG_IS_ENABLED(BLK)
141 struct udevice *dev;
142
143 for (blk_first_device(IF_TYPE_USB, &dev);
144 dev;
145 blk_next_device(&dev)) {
146 struct blk_desc *desc = dev_get_uclass_platdata(dev);
147
148 printf(" Device %d: ", desc->devnum);
149 dev_print(desc);
150 count++;
151 }
152 #else
153 int i;
154
155 if (usb_max_devs > 0) {
156 for (i = 0; i < usb_max_devs; i++) {
157 printf(" Device %d: ", i);
158 dev_print(&usb_dev_desc[i]);
159 }
160 return 0;
161 }
162 #endif
163 if (!count) {
164 printf("No storage devices, perhaps not 'usb start'ed..?\n");
165 return 1;
166 }
167
168 return 0;
169 }
170
171 static unsigned int usb_get_max_lun(struct us_data *us)
172 {
173 int len;
174 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
175 len = usb_control_msg(us->pusb_dev,
176 usb_rcvctrlpipe(us->pusb_dev, 0),
177 US_BBB_GET_MAX_LUN,
178 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
179 0, us->ifnum,
180 result, sizeof(char),
181 USB_CNTL_TIMEOUT * 5);
182 debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result);
183 return (len > 0) ? *result : 0;
184 }
185
186 static int usb_stor_probe_device(struct usb_device *udev)
187 {
188 int lun, max_lun;
189
190 #if CONFIG_IS_ENABLED(BLK)
191 struct us_data *data;
192 int ret;
193 #else
194 int start;
195
196 if (udev == NULL)
197 return -ENOENT; /* no more devices available */
198 #endif
199
200 debug("\n\nProbing for storage\n");
201 #if CONFIG_IS_ENABLED(BLK)
202 /*
203 * We store the us_data in the mass storage device's platdata. It
204 * is shared by all LUNs (block devices) attached to this mass storage
205 * device.
206 */
207 data = dev_get_platdata(udev->dev);
208 if (!usb_storage_probe(udev, 0, data))
209 return 0;
210 max_lun = usb_get_max_lun(data);
211 for (lun = 0; lun <= max_lun; lun++) {
212 struct blk_desc *blkdev;
213 struct udevice *dev;
214 char str[10];
215
216 snprintf(str, sizeof(str), "lun%d", lun);
217 ret = blk_create_devicef(udev->dev, "usb_storage_blk", str,
218 IF_TYPE_USB, usb_max_devs, 512, 0,
219 &dev);
220 if (ret) {
221 debug("Cannot bind driver\n");
222 return ret;
223 }
224
225 blkdev = dev_get_uclass_platdata(dev);
226 blkdev->target = 0xff;
227 blkdev->lun = lun;
228
229 ret = usb_stor_get_info(udev, data, blkdev);
230 if (ret == 1) {
231 usb_max_devs++;
232 debug("%s: Found device %p\n", __func__, udev);
233 } else {
234 debug("usb_stor_get_info: Invalid device\n");
235 ret = device_unbind(dev);
236 if (ret)
237 return ret;
238 }
239 }
240 #else
241 /* We don't have space to even probe if we hit the maximum */
242 if (usb_max_devs == USB_MAX_STOR_DEV) {
243 printf("max USB Storage Device reached: %d stopping\n",
244 usb_max_devs);
245 return -ENOSPC;
246 }
247
248 if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs]))
249 return 0;
250
251 /*
252 * OK, it's a storage device. Iterate over its LUNs and populate
253 * usb_dev_desc'
254 */
255 start = usb_max_devs;
256
257 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
258 for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
259 lun++) {
260 struct blk_desc *blkdev;
261
262 blkdev = &usb_dev_desc[usb_max_devs];
263 memset(blkdev, '\0', sizeof(struct blk_desc));
264 blkdev->if_type = IF_TYPE_USB;
265 blkdev->devnum = usb_max_devs;
266 blkdev->part_type = PART_TYPE_UNKNOWN;
267 blkdev->target = 0xff;
268 blkdev->type = DEV_TYPE_UNKNOWN;
269 blkdev->block_read = usb_stor_read;
270 blkdev->block_write = usb_stor_write;
271 blkdev->lun = lun;
272 blkdev->priv = udev;
273
274 if (usb_stor_get_info(udev, &usb_stor[start],
275 &usb_dev_desc[usb_max_devs]) == 1) {
276 debug("partype: %d\n", blkdev->part_type);
277 part_init(blkdev);
278 debug("partype: %d\n", blkdev->part_type);
279 usb_max_devs++;
280 debug("%s: Found device %p\n", __func__, udev);
281 }
282 }
283 #endif
284
285 return 0;
286 }
287
288 void usb_stor_reset(void)
289 {
290 usb_max_devs = 0;
291 }
292
293 /*******************************************************************************
294 * scan the usb and reports device info
295 * to the user if mode = 1
296 * returns current device or -1 if no
297 */
298 int usb_stor_scan(int mode)
299 {
300 if (mode == 1)
301 printf(" scanning usb for storage devices... ");
302
303 #if !CONFIG_IS_ENABLED(DM_USB)
304 unsigned char i;
305
306 usb_disable_asynch(1); /* asynch transfer not allowed */
307
308 usb_stor_reset();
309 for (i = 0; i < USB_MAX_DEVICE; i++) {
310 struct usb_device *dev;
311
312 dev = usb_get_dev_index(i); /* get device */
313 debug("i=%d\n", i);
314 if (usb_stor_probe_device(dev))
315 break;
316 } /* for */
317
318 usb_disable_asynch(0); /* asynch transfer allowed */
319 #endif
320 printf("%d Storage Device(s) found\n", usb_max_devs);
321 if (usb_max_devs > 0)
322 return 0;
323 return -1;
324 }
325
326 static int usb_stor_irq(struct usb_device *dev)
327 {
328 struct us_data *us;
329 us = (struct us_data *)dev->privptr;
330
331 if (us->ip_wanted)
332 us->ip_wanted = 0;
333 return 0;
334 }
335
336
337 #ifdef DEBUG
338
339 static void usb_show_srb(struct scsi_cmd *pccb)
340 {
341 int i;
342 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
343 for (i = 0; i < 12; i++)
344 printf("%02X ", pccb->cmd[i]);
345 printf("\n");
346 }
347
348 static void display_int_status(unsigned long tmp)
349 {
350 printf("Status: %s %s %s %s %s %s %s\n",
351 (tmp & USB_ST_ACTIVE) ? "Active" : "",
352 (tmp & USB_ST_STALLED) ? "Stalled" : "",
353 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
354 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
355 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
356 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
357 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
358 }
359 #endif
360 /***********************************************************************
361 * Data transfer routines
362 ***********************************************************************/
363
364 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
365 {
366 int max_size;
367 int this_xfer;
368 int result;
369 int partial;
370 int maxtry;
371 int stat;
372
373 /* determine the maximum packet size for these transfers */
374 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
375
376 /* while we have data left to transfer */
377 while (length) {
378
379 /* calculate how long this will be -- maximum or a remainder */
380 this_xfer = length > max_size ? max_size : length;
381 length -= this_xfer;
382
383 /* setup the retry counter */
384 maxtry = 10;
385
386 /* set up the transfer loop */
387 do {
388 /* transfer the data */
389 debug("Bulk xfer 0x%lx(%d) try #%d\n",
390 (ulong)map_to_sysmem(buf), this_xfer,
391 11 - maxtry);
392 result = usb_bulk_msg(us->pusb_dev, pipe, buf,
393 this_xfer, &partial,
394 USB_CNTL_TIMEOUT * 5);
395 debug("bulk_msg returned %d xferred %d/%d\n",
396 result, partial, this_xfer);
397 if (us->pusb_dev->status != 0) {
398 /* if we stall, we need to clear it before
399 * we go on
400 */
401 #ifdef DEBUG
402 display_int_status(us->pusb_dev->status);
403 #endif
404 if (us->pusb_dev->status & USB_ST_STALLED) {
405 debug("stalled ->clearing endpoint" \
406 "halt for pipe 0x%x\n", pipe);
407 stat = us->pusb_dev->status;
408 usb_clear_halt(us->pusb_dev, pipe);
409 us->pusb_dev->status = stat;
410 if (this_xfer == partial) {
411 debug("bulk transferred" \
412 "with error %lX," \
413 " but data ok\n",
414 us->pusb_dev->status);
415 return 0;
416 }
417 else
418 return result;
419 }
420 if (us->pusb_dev->status & USB_ST_NAK_REC) {
421 debug("Device NAKed bulk_msg\n");
422 return result;
423 }
424 debug("bulk transferred with error");
425 if (this_xfer == partial) {
426 debug(" %ld, but data ok\n",
427 us->pusb_dev->status);
428 return 0;
429 }
430 /* if our try counter reaches 0, bail out */
431 debug(" %ld, data %d\n",
432 us->pusb_dev->status, partial);
433 if (!maxtry--)
434 return result;
435 }
436 /* update to show what data was transferred */
437 this_xfer -= partial;
438 buf += partial;
439 /* continue until this transfer is done */
440 } while (this_xfer);
441 }
442
443 /* if we get here, we're done and successful */
444 return 0;
445 }
446
447 static int usb_stor_BBB_reset(struct us_data *us)
448 {
449 int result;
450 unsigned int pipe;
451
452 /*
453 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
454 *
455 * For Reset Recovery the host shall issue in the following order:
456 * a) a Bulk-Only Mass Storage Reset
457 * b) a Clear Feature HALT to the Bulk-In endpoint
458 * c) a Clear Feature HALT to the Bulk-Out endpoint
459 *
460 * This is done in 3 steps.
461 *
462 * If the reset doesn't succeed, the device should be port reset.
463 *
464 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
465 */
466 debug("BBB_reset\n");
467 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
468 US_BBB_RESET,
469 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
470 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
471
472 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
473 debug("RESET:stall\n");
474 return -1;
475 }
476
477 /* long wait for reset */
478 mdelay(150);
479 debug("BBB_reset result %d: status %lX reset\n",
480 result, us->pusb_dev->status);
481 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
482 result = usb_clear_halt(us->pusb_dev, pipe);
483 /* long wait for reset */
484 mdelay(150);
485 debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
486 result, us->pusb_dev->status);
487 /* long wait for reset */
488 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
489 result = usb_clear_halt(us->pusb_dev, pipe);
490 mdelay(150);
491 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
492 result, us->pusb_dev->status);
493 debug("BBB_reset done\n");
494 return 0;
495 }
496
497 /* FIXME: this reset function doesn't really reset the port, and it
498 * should. Actually it should probably do what it's doing here, and
499 * reset the port physically
500 */
501 static int usb_stor_CB_reset(struct us_data *us)
502 {
503 unsigned char cmd[12];
504 int result;
505
506 debug("CB_reset\n");
507 memset(cmd, 0xff, sizeof(cmd));
508 cmd[0] = SCSI_SEND_DIAG;
509 cmd[1] = 4;
510 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
511 US_CBI_ADSC,
512 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
513 0, us->ifnum, cmd, sizeof(cmd),
514 USB_CNTL_TIMEOUT * 5);
515
516 /* long wait for reset */
517 mdelay(1500);
518 debug("CB_reset result %d: status %lX clearing endpoint halt\n",
519 result, us->pusb_dev->status);
520 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
521 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
522
523 debug("CB_reset done\n");
524 return 0;
525 }
526
527 /*
528 * Set up the command for a BBB device. Note that the actual SCSI
529 * command is copied into cbw.CBWCDB.
530 */
531 static int usb_stor_BBB_comdat(struct scsi_cmd *srb, struct us_data *us)
532 {
533 int result;
534 int actlen;
535 int dir_in;
536 unsigned int pipe;
537 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1);
538
539 dir_in = US_DIRECTION(srb->cmd[0]);
540
541 #ifdef BBB_COMDAT_TRACE
542 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
543 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
544 srb->pdata);
545 if (srb->cmdlen) {
546 for (result = 0; result < srb->cmdlen; result++)
547 printf("cmd[%d] %#x ", result, srb->cmd[result]);
548 printf("\n");
549 }
550 #endif
551 /* sanity checks */
552 if (!(srb->cmdlen <= CBWCDBLENGTH)) {
553 debug("usb_stor_BBB_comdat:cmdlen too large\n");
554 return -1;
555 }
556
557 /* always OUT to the ep */
558 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
559
560 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
561 cbw->dCBWTag = cpu_to_le32(CBWTag++);
562 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
563 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
564 cbw->bCBWLUN = srb->lun;
565 cbw->bCDBLength = srb->cmdlen;
566 /* copy the command data into the CBW command data buffer */
567 /* DST SRC LEN!!! */
568
569 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
570 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
571 &actlen, USB_CNTL_TIMEOUT * 5);
572 if (result < 0)
573 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
574 return result;
575 }
576
577 /* FIXME: we also need a CBI_command which sets up the completion
578 * interrupt, and waits for it
579 */
580 static int usb_stor_CB_comdat(struct scsi_cmd *srb, struct us_data *us)
581 {
582 int result = 0;
583 int dir_in, retry;
584 unsigned int pipe;
585 unsigned long status;
586
587 retry = 5;
588 dir_in = US_DIRECTION(srb->cmd[0]);
589
590 if (dir_in)
591 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
592 else
593 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
594
595 while (retry--) {
596 debug("CBI gets a command: Try %d\n", 5 - retry);
597 #ifdef DEBUG
598 usb_show_srb(srb);
599 #endif
600 /* let's send the command via the control pipe */
601 result = usb_control_msg(us->pusb_dev,
602 usb_sndctrlpipe(us->pusb_dev , 0),
603 US_CBI_ADSC,
604 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
605 0, us->ifnum,
606 srb->cmd, srb->cmdlen,
607 USB_CNTL_TIMEOUT * 5);
608 debug("CB_transport: control msg returned %d, status %lX\n",
609 result, us->pusb_dev->status);
610 /* check the return code for the command */
611 if (result < 0) {
612 if (us->pusb_dev->status & USB_ST_STALLED) {
613 status = us->pusb_dev->status;
614 debug(" stall during command found," \
615 " clear pipe\n");
616 usb_clear_halt(us->pusb_dev,
617 usb_sndctrlpipe(us->pusb_dev, 0));
618 us->pusb_dev->status = status;
619 }
620 debug(" error during command %02X" \
621 " Stat = %lX\n", srb->cmd[0],
622 us->pusb_dev->status);
623 return result;
624 }
625 /* transfer the data payload for this command, if one exists*/
626
627 debug("CB_transport: control msg returned %d," \
628 " direction is %s to go 0x%lx\n", result,
629 dir_in ? "IN" : "OUT", srb->datalen);
630 if (srb->datalen) {
631 result = us_one_transfer(us, pipe, (char *)srb->pdata,
632 srb->datalen);
633 debug("CBI attempted to transfer data," \
634 " result is %d status %lX, len %d\n",
635 result, us->pusb_dev->status,
636 us->pusb_dev->act_len);
637 if (!(us->pusb_dev->status & USB_ST_NAK_REC))
638 break;
639 } /* if (srb->datalen) */
640 else
641 break;
642 }
643 /* return result */
644
645 return result;
646 }
647
648
649 static int usb_stor_CBI_get_status(struct scsi_cmd *srb, struct us_data *us)
650 {
651 int timeout;
652
653 us->ip_wanted = 1;
654 usb_int_msg(us->pusb_dev, us->irqpipe,
655 (void *)&us->ip_data, us->irqmaxp, us->irqinterval, false);
656 timeout = 1000;
657 while (timeout--) {
658 if (us->ip_wanted == 0)
659 break;
660 mdelay(10);
661 }
662 if (us->ip_wanted) {
663 printf(" Did not get interrupt on CBI\n");
664 us->ip_wanted = 0;
665 return USB_STOR_TRANSPORT_ERROR;
666 }
667 debug("Got interrupt data 0x%x, transferred %d status 0x%lX\n",
668 us->ip_data, us->pusb_dev->irq_act_len,
669 us->pusb_dev->irq_status);
670 /* UFI gives us ASC and ASCQ, like a request sense */
671 if (us->subclass == US_SC_UFI) {
672 if (srb->cmd[0] == SCSI_REQ_SENSE ||
673 srb->cmd[0] == SCSI_INQUIRY)
674 return USB_STOR_TRANSPORT_GOOD; /* Good */
675 else if (us->ip_data)
676 return USB_STOR_TRANSPORT_FAILED;
677 else
678 return USB_STOR_TRANSPORT_GOOD;
679 }
680 /* otherwise, we interpret the data normally */
681 switch (us->ip_data) {
682 case 0x0001:
683 return USB_STOR_TRANSPORT_GOOD;
684 case 0x0002:
685 return USB_STOR_TRANSPORT_FAILED;
686 default:
687 return USB_STOR_TRANSPORT_ERROR;
688 } /* switch */
689 return USB_STOR_TRANSPORT_ERROR;
690 }
691
692 #define USB_TRANSPORT_UNKNOWN_RETRY 5
693 #define USB_TRANSPORT_NOT_READY_RETRY 10
694
695 /* clear a stall on an endpoint - special for BBB devices */
696 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
697 {
698 /* ENDPOINT_HALT = 0, so set value to 0 */
699 return usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
700 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
701 endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
702 }
703
704 static int usb_stor_BBB_transport(struct scsi_cmd *srb, struct us_data *us)
705 {
706 int result, retry;
707 int dir_in;
708 int actlen, data_actlen;
709 unsigned int pipe, pipein, pipeout;
710 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1);
711 #ifdef BBB_XPORT_TRACE
712 unsigned char *ptr;
713 int index;
714 #endif
715
716 dir_in = US_DIRECTION(srb->cmd[0]);
717
718 /* COMMAND phase */
719 debug("COMMAND phase\n");
720 result = usb_stor_BBB_comdat(srb, us);
721 if (result < 0) {
722 debug("failed to send CBW status %ld\n",
723 us->pusb_dev->status);
724 usb_stor_BBB_reset(us);
725 return USB_STOR_TRANSPORT_FAILED;
726 }
727 if (!(us->flags & USB_READY))
728 mdelay(5);
729 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
730 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
731 /* DATA phase + error handling */
732 data_actlen = 0;
733 /* no data, go immediately to the STATUS phase */
734 if (srb->datalen == 0)
735 goto st;
736 debug("DATA phase\n");
737 if (dir_in)
738 pipe = pipein;
739 else
740 pipe = pipeout;
741
742 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
743 &data_actlen, USB_CNTL_TIMEOUT * 5);
744 /* special handling of STALL in DATA phase */
745 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
746 debug("DATA:stall\n");
747 /* clear the STALL on the endpoint */
748 result = usb_stor_BBB_clear_endpt_stall(us,
749 dir_in ? us->ep_in : us->ep_out);
750 if (result >= 0)
751 /* continue on to STATUS phase */
752 goto st;
753 }
754 if (result < 0) {
755 debug("usb_bulk_msg error status %ld\n",
756 us->pusb_dev->status);
757 usb_stor_BBB_reset(us);
758 return USB_STOR_TRANSPORT_FAILED;
759 }
760 #ifdef BBB_XPORT_TRACE
761 for (index = 0; index < data_actlen; index++)
762 printf("pdata[%d] %#x ", index, srb->pdata[index]);
763 printf("\n");
764 #endif
765 /* STATUS phase + error handling */
766 st:
767 retry = 0;
768 again:
769 debug("STATUS phase\n");
770 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
771 &actlen, USB_CNTL_TIMEOUT*5);
772
773 /* special handling of STALL in STATUS phase */
774 if ((result < 0) && (retry < 1) &&
775 (us->pusb_dev->status & USB_ST_STALLED)) {
776 debug("STATUS:stall\n");
777 /* clear the STALL on the endpoint */
778 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
779 if (result >= 0 && (retry++ < 1))
780 /* do a retry */
781 goto again;
782 }
783 if (result < 0) {
784 debug("usb_bulk_msg error status %ld\n",
785 us->pusb_dev->status);
786 usb_stor_BBB_reset(us);
787 return USB_STOR_TRANSPORT_FAILED;
788 }
789 #ifdef BBB_XPORT_TRACE
790 ptr = (unsigned char *)csw;
791 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
792 printf("ptr[%d] %#x ", index, ptr[index]);
793 printf("\n");
794 #endif
795 /* misuse pipe to get the residue */
796 pipe = le32_to_cpu(csw->dCSWDataResidue);
797 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
798 pipe = srb->datalen - data_actlen;
799 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
800 debug("!CSWSIGNATURE\n");
801 usb_stor_BBB_reset(us);
802 return USB_STOR_TRANSPORT_FAILED;
803 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
804 debug("!Tag\n");
805 usb_stor_BBB_reset(us);
806 return USB_STOR_TRANSPORT_FAILED;
807 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
808 debug(">PHASE\n");
809 usb_stor_BBB_reset(us);
810 return USB_STOR_TRANSPORT_FAILED;
811 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
812 debug("=PHASE\n");
813 usb_stor_BBB_reset(us);
814 return USB_STOR_TRANSPORT_FAILED;
815 } else if (data_actlen > srb->datalen) {
816 debug("transferred %dB instead of %ldB\n",
817 data_actlen, srb->datalen);
818 return USB_STOR_TRANSPORT_FAILED;
819 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
820 debug("FAILED\n");
821 return USB_STOR_TRANSPORT_FAILED;
822 }
823
824 return result;
825 }
826
827 static int usb_stor_CB_transport(struct scsi_cmd *srb, struct us_data *us)
828 {
829 int result, status;
830 struct scsi_cmd *psrb;
831 struct scsi_cmd reqsrb;
832 int retry, notready;
833
834 psrb = &reqsrb;
835 status = USB_STOR_TRANSPORT_GOOD;
836 retry = 0;
837 notready = 0;
838 /* issue the command */
839 do_retry:
840 result = usb_stor_CB_comdat(srb, us);
841 debug("command / Data returned %d, status %lX\n",
842 result, us->pusb_dev->status);
843 /* if this is an CBI Protocol, get IRQ */
844 if (us->protocol == US_PR_CBI) {
845 status = usb_stor_CBI_get_status(srb, us);
846 /* if the status is error, report it */
847 if (status == USB_STOR_TRANSPORT_ERROR) {
848 debug(" USB CBI Command Error\n");
849 return status;
850 }
851 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
852 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
853 if (!us->ip_data) {
854 /* if the status is good, report it */
855 if (status == USB_STOR_TRANSPORT_GOOD) {
856 debug(" USB CBI Command Good\n");
857 return status;
858 }
859 }
860 }
861 /* do we have to issue an auto request? */
862 /* HERE we have to check the result */
863 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
864 debug("ERROR %lX\n", us->pusb_dev->status);
865 us->transport_reset(us);
866 return USB_STOR_TRANSPORT_ERROR;
867 }
868 if ((us->protocol == US_PR_CBI) &&
869 ((srb->cmd[0] == SCSI_REQ_SENSE) ||
870 (srb->cmd[0] == SCSI_INQUIRY))) {
871 /* do not issue an autorequest after request sense */
872 debug("No auto request and good\n");
873 return USB_STOR_TRANSPORT_GOOD;
874 }
875 /* issue an request_sense */
876 memset(&psrb->cmd[0], 0, 12);
877 psrb->cmd[0] = SCSI_REQ_SENSE;
878 psrb->cmd[1] = srb->lun << 5;
879 psrb->cmd[4] = 18;
880 psrb->datalen = 18;
881 psrb->pdata = &srb->sense_buf[0];
882 psrb->cmdlen = 12;
883 /* issue the command */
884 result = usb_stor_CB_comdat(psrb, us);
885 debug("auto request returned %d\n", result);
886 /* if this is an CBI Protocol, get IRQ */
887 if (us->protocol == US_PR_CBI)
888 status = usb_stor_CBI_get_status(psrb, us);
889
890 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
891 debug(" AUTO REQUEST ERROR %ld\n",
892 us->pusb_dev->status);
893 return USB_STOR_TRANSPORT_ERROR;
894 }
895 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
896 srb->sense_buf[0], srb->sense_buf[2],
897 srb->sense_buf[12], srb->sense_buf[13]);
898 /* Check the auto request result */
899 if ((srb->sense_buf[2] == 0) &&
900 (srb->sense_buf[12] == 0) &&
901 (srb->sense_buf[13] == 0)) {
902 /* ok, no sense */
903 return USB_STOR_TRANSPORT_GOOD;
904 }
905
906 /* Check the auto request result */
907 switch (srb->sense_buf[2]) {
908 case 0x01:
909 /* Recovered Error */
910 return USB_STOR_TRANSPORT_GOOD;
911 break;
912 case 0x02:
913 /* Not Ready */
914 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
915 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
916 " 0x%02X (NOT READY)\n", srb->cmd[0],
917 srb->sense_buf[0], srb->sense_buf[2],
918 srb->sense_buf[12], srb->sense_buf[13]);
919 return USB_STOR_TRANSPORT_FAILED;
920 } else {
921 mdelay(100);
922 goto do_retry;
923 }
924 break;
925 default:
926 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
927 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
928 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
929 srb->sense_buf[2], srb->sense_buf[12],
930 srb->sense_buf[13]);
931 return USB_STOR_TRANSPORT_FAILED;
932 } else
933 goto do_retry;
934 break;
935 }
936 return USB_STOR_TRANSPORT_FAILED;
937 }
938
939 static void usb_stor_set_max_xfer_blk(struct usb_device *udev,
940 struct us_data *us)
941 {
942 /*
943 * Limit the total size of a transfer to 120 KB.
944 *
945 * Some devices are known to choke with anything larger. It seems like
946 * the problem stems from the fact that original IDE controllers had
947 * only an 8-bit register to hold the number of sectors in one transfer
948 * and even those couldn't handle a full 256 sectors.
949 *
950 * Because we want to make sure we interoperate with as many devices as
951 * possible, we will maintain a 240 sector transfer size limit for USB
952 * Mass Storage devices.
953 *
954 * Tests show that other operating have similar limits with Microsoft
955 * Windows 7 limiting transfers to 128 sectors for both USB2 and USB3
956 * and Apple Mac OS X 10.11 limiting transfers to 256 sectors for USB2
957 * and 2048 for USB3 devices.
958 */
959 unsigned short blk = 240;
960
961 #if CONFIG_IS_ENABLED(DM_USB)
962 size_t size;
963 int ret;
964
965 ret = usb_get_max_xfer_size(udev, (size_t *)&size);
966 if ((ret >= 0) && (size < blk * 512))
967 blk = size / 512;
968 #endif
969
970 us->max_xfer_blk = blk;
971 }
972
973 static int usb_inquiry(struct scsi_cmd *srb, struct us_data *ss)
974 {
975 int retry, i;
976 retry = 5;
977 do {
978 memset(&srb->cmd[0], 0, 12);
979 srb->cmd[0] = SCSI_INQUIRY;
980 srb->cmd[1] = srb->lun << 5;
981 srb->cmd[4] = 36;
982 srb->datalen = 36;
983 srb->cmdlen = 12;
984 i = ss->transport(srb, ss);
985 debug("inquiry returns %d\n", i);
986 if (i == 0)
987 break;
988 } while (--retry);
989
990 if (!retry) {
991 printf("error in inquiry\n");
992 return -1;
993 }
994 return 0;
995 }
996
997 static int usb_request_sense(struct scsi_cmd *srb, struct us_data *ss)
998 {
999 char *ptr;
1000
1001 ptr = (char *)srb->pdata;
1002 memset(&srb->cmd[0], 0, 12);
1003 srb->cmd[0] = SCSI_REQ_SENSE;
1004 srb->cmd[1] = srb->lun << 5;
1005 srb->cmd[4] = 18;
1006 srb->datalen = 18;
1007 srb->pdata = &srb->sense_buf[0];
1008 srb->cmdlen = 12;
1009 ss->transport(srb, ss);
1010 debug("Request Sense returned %02X %02X %02X\n",
1011 srb->sense_buf[2], srb->sense_buf[12],
1012 srb->sense_buf[13]);
1013 srb->pdata = (uchar *)ptr;
1014 return 0;
1015 }
1016
1017 static int usb_test_unit_ready(struct scsi_cmd *srb, struct us_data *ss)
1018 {
1019 int retries = 10;
1020
1021 do {
1022 memset(&srb->cmd[0], 0, 12);
1023 srb->cmd[0] = SCSI_TST_U_RDY;
1024 srb->cmd[1] = srb->lun << 5;
1025 srb->datalen = 0;
1026 srb->cmdlen = 12;
1027 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) {
1028 ss->flags |= USB_READY;
1029 return 0;
1030 }
1031 usb_request_sense(srb, ss);
1032 /*
1033 * Check the Key Code Qualifier, if it matches
1034 * "Not Ready - medium not present"
1035 * (the sense Key equals 0x2 and the ASC is 0x3a)
1036 * return immediately as the medium being absent won't change
1037 * unless there is a user action.
1038 */
1039 if ((srb->sense_buf[2] == 0x02) &&
1040 (srb->sense_buf[12] == 0x3a))
1041 return -1;
1042 mdelay(100);
1043 } while (retries--);
1044
1045 return -1;
1046 }
1047
1048 static int usb_read_capacity(struct scsi_cmd *srb, struct us_data *ss)
1049 {
1050 int retry;
1051 /* XXX retries */
1052 retry = 3;
1053 do {
1054 memset(&srb->cmd[0], 0, 12);
1055 srb->cmd[0] = SCSI_RD_CAPAC;
1056 srb->cmd[1] = srb->lun << 5;
1057 srb->datalen = 8;
1058 srb->cmdlen = 12;
1059 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
1060 return 0;
1061 } while (retry--);
1062
1063 return -1;
1064 }
1065
1066 static int usb_read_10(struct scsi_cmd *srb, struct us_data *ss,
1067 unsigned long start, unsigned short blocks)
1068 {
1069 memset(&srb->cmd[0], 0, 12);
1070 srb->cmd[0] = SCSI_READ10;
1071 srb->cmd[1] = srb->lun << 5;
1072 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1073 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1074 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1075 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1076 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1077 srb->cmd[8] = (unsigned char) blocks & 0xff;
1078 srb->cmdlen = 12;
1079 debug("read10: start %lx blocks %x\n", start, blocks);
1080 return ss->transport(srb, ss);
1081 }
1082
1083 static int usb_write_10(struct scsi_cmd *srb, struct us_data *ss,
1084 unsigned long start, unsigned short blocks)
1085 {
1086 memset(&srb->cmd[0], 0, 12);
1087 srb->cmd[0] = SCSI_WRITE10;
1088 srb->cmd[1] = srb->lun << 5;
1089 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1090 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1091 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1092 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1093 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1094 srb->cmd[8] = (unsigned char) blocks & 0xff;
1095 srb->cmdlen = 12;
1096 debug("write10: start %lx blocks %x\n", start, blocks);
1097 return ss->transport(srb, ss);
1098 }
1099
1100
1101 #ifdef CONFIG_USB_BIN_FIXUP
1102 /*
1103 * Some USB storage devices queried for SCSI identification data respond with
1104 * binary strings, which if output to the console freeze the terminal. The
1105 * workaround is to modify the vendor and product strings read from such
1106 * device with proper values (as reported by 'usb info').
1107 *
1108 * Vendor and product length limits are taken from the definition of
1109 * struct blk_desc in include/part.h.
1110 */
1111 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1112 unsigned char vendor[],
1113 unsigned char product[]) {
1114 const unsigned char max_vendor_len = 40;
1115 const unsigned char max_product_len = 20;
1116 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1117 strncpy((char *)vendor, "SMSC", max_vendor_len);
1118 strncpy((char *)product, "Flash Media Cntrller",
1119 max_product_len);
1120 }
1121 }
1122 #endif /* CONFIG_USB_BIN_FIXUP */
1123
1124 #if CONFIG_IS_ENABLED(BLK)
1125 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr,
1126 lbaint_t blkcnt, void *buffer)
1127 #else
1128 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
1129 lbaint_t blkcnt, void *buffer)
1130 #endif
1131 {
1132 lbaint_t start, blks;
1133 uintptr_t buf_addr;
1134 unsigned short smallblks;
1135 struct usb_device *udev;
1136 struct us_data *ss;
1137 int retry;
1138 struct scsi_cmd *srb = &usb_ccb;
1139 #if CONFIG_IS_ENABLED(BLK)
1140 struct blk_desc *block_dev;
1141 #endif
1142
1143 if (blkcnt == 0)
1144 return 0;
1145 /* Setup device */
1146 #if CONFIG_IS_ENABLED(BLK)
1147 block_dev = dev_get_uclass_platdata(dev);
1148 udev = dev_get_parent_priv(dev_get_parent(dev));
1149 debug("\nusb_read: udev %d\n", block_dev->devnum);
1150 #else
1151 debug("\nusb_read: udev %d\n", block_dev->devnum);
1152 udev = usb_dev_desc[block_dev->devnum].priv;
1153 if (!udev) {
1154 debug("%s: No device\n", __func__);
1155 return 0;
1156 }
1157 #endif
1158 ss = (struct us_data *)udev->privptr;
1159
1160 usb_disable_asynch(1); /* asynch transfer not allowed */
1161 usb_lock_async(udev, 1);
1162 srb->lun = block_dev->lun;
1163 buf_addr = (uintptr_t)buffer;
1164 start = blknr;
1165 blks = blkcnt;
1166
1167 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
1168 block_dev->devnum, start, blks, buf_addr);
1169
1170 do {
1171 /* XXX need some comment here */
1172 retry = 2;
1173 srb->pdata = (unsigned char *)buf_addr;
1174 if (blks > ss->max_xfer_blk)
1175 smallblks = ss->max_xfer_blk;
1176 else
1177 smallblks = (unsigned short) blks;
1178 retry_it:
1179 if (smallblks == ss->max_xfer_blk)
1180 usb_show_progress();
1181 srb->datalen = block_dev->blksz * smallblks;
1182 srb->pdata = (unsigned char *)buf_addr;
1183 if (usb_read_10(srb, ss, start, smallblks)) {
1184 debug("Read ERROR\n");
1185 ss->flags &= ~USB_READY;
1186 usb_request_sense(srb, ss);
1187 if (retry--)
1188 goto retry_it;
1189 blkcnt -= blks;
1190 break;
1191 }
1192 start += smallblks;
1193 blks -= smallblks;
1194 buf_addr += srb->datalen;
1195 } while (blks != 0);
1196
1197 debug("usb_read: end startblk " LBAF ", blccnt %x buffer %lx\n",
1198 start, smallblks, buf_addr);
1199
1200 usb_lock_async(udev, 0);
1201 usb_disable_asynch(0); /* asynch transfer allowed */
1202 if (blkcnt >= ss->max_xfer_blk)
1203 debug("\n");
1204 return blkcnt;
1205 }
1206
1207 #if CONFIG_IS_ENABLED(BLK)
1208 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr,
1209 lbaint_t blkcnt, const void *buffer)
1210 #else
1211 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr,
1212 lbaint_t blkcnt, const void *buffer)
1213 #endif
1214 {
1215 lbaint_t start, blks;
1216 uintptr_t buf_addr;
1217 unsigned short smallblks;
1218 struct usb_device *udev;
1219 struct us_data *ss;
1220 int retry;
1221 struct scsi_cmd *srb = &usb_ccb;
1222 #if CONFIG_IS_ENABLED(BLK)
1223 struct blk_desc *block_dev;
1224 #endif
1225
1226 if (blkcnt == 0)
1227 return 0;
1228
1229 /* Setup device */
1230 #if CONFIG_IS_ENABLED(BLK)
1231 block_dev = dev_get_uclass_platdata(dev);
1232 udev = dev_get_parent_priv(dev_get_parent(dev));
1233 debug("\nusb_read: udev %d\n", block_dev->devnum);
1234 #else
1235 debug("\nusb_read: udev %d\n", block_dev->devnum);
1236 udev = usb_dev_desc[block_dev->devnum].priv;
1237 if (!udev) {
1238 debug("%s: No device\n", __func__);
1239 return 0;
1240 }
1241 #endif
1242 ss = (struct us_data *)udev->privptr;
1243
1244 usb_disable_asynch(1); /* asynch transfer not allowed */
1245 usb_lock_async(udev, 1);
1246
1247 srb->lun = block_dev->lun;
1248 buf_addr = (uintptr_t)buffer;
1249 start = blknr;
1250 blks = blkcnt;
1251
1252 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
1253 block_dev->devnum, start, blks, buf_addr);
1254
1255 do {
1256 /* If write fails retry for max retry count else
1257 * return with number of blocks written successfully.
1258 */
1259 retry = 2;
1260 srb->pdata = (unsigned char *)buf_addr;
1261 if (blks > ss->max_xfer_blk)
1262 smallblks = ss->max_xfer_blk;
1263 else
1264 smallblks = (unsigned short) blks;
1265 retry_it:
1266 if (smallblks == ss->max_xfer_blk)
1267 usb_show_progress();
1268 srb->datalen = block_dev->blksz * smallblks;
1269 srb->pdata = (unsigned char *)buf_addr;
1270 if (usb_write_10(srb, ss, start, smallblks)) {
1271 debug("Write ERROR\n");
1272 ss->flags &= ~USB_READY;
1273 usb_request_sense(srb, ss);
1274 if (retry--)
1275 goto retry_it;
1276 blkcnt -= blks;
1277 break;
1278 }
1279 start += smallblks;
1280 blks -= smallblks;
1281 buf_addr += srb->datalen;
1282 } while (blks != 0);
1283
1284 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %lx\n",
1285 start, smallblks, buf_addr);
1286
1287 usb_lock_async(udev, 0);
1288 usb_disable_asynch(0); /* asynch transfer allowed */
1289 if (blkcnt >= ss->max_xfer_blk)
1290 debug("\n");
1291 return blkcnt;
1292
1293 }
1294
1295 /* Probe to see if a new device is actually a Storage device */
1296 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1297 struct us_data *ss)
1298 {
1299 struct usb_interface *iface;
1300 int i;
1301 struct usb_endpoint_descriptor *ep_desc;
1302 unsigned int flags = 0;
1303
1304 /* let's examine the device now */
1305 iface = &dev->config.if_desc[ifnum];
1306
1307 if (dev->descriptor.bDeviceClass != 0 ||
1308 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1309 iface->desc.bInterfaceSubClass < US_SC_MIN ||
1310 iface->desc.bInterfaceSubClass > US_SC_MAX) {
1311 debug("Not mass storage\n");
1312 /* if it's not a mass storage, we go no further */
1313 return 0;
1314 }
1315
1316 memset(ss, 0, sizeof(struct us_data));
1317
1318 /* At this point, we know we've got a live one */
1319 debug("\n\nUSB Mass Storage device detected\n");
1320
1321 /* Initialize the us_data structure with some useful info */
1322 ss->flags = flags;
1323 ss->ifnum = ifnum;
1324 ss->pusb_dev = dev;
1325 ss->attention_done = 0;
1326 ss->subclass = iface->desc.bInterfaceSubClass;
1327 ss->protocol = iface->desc.bInterfaceProtocol;
1328
1329 /* set the handler pointers based on the protocol */
1330 debug("Transport: ");
1331 switch (ss->protocol) {
1332 case US_PR_CB:
1333 debug("Control/Bulk\n");
1334 ss->transport = usb_stor_CB_transport;
1335 ss->transport_reset = usb_stor_CB_reset;
1336 break;
1337
1338 case US_PR_CBI:
1339 debug("Control/Bulk/Interrupt\n");
1340 ss->transport = usb_stor_CB_transport;
1341 ss->transport_reset = usb_stor_CB_reset;
1342 break;
1343 case US_PR_BULK:
1344 debug("Bulk/Bulk/Bulk\n");
1345 ss->transport = usb_stor_BBB_transport;
1346 ss->transport_reset = usb_stor_BBB_reset;
1347 break;
1348 default:
1349 printf("USB Storage Transport unknown / not yet implemented\n");
1350 return 0;
1351 break;
1352 }
1353
1354 /*
1355 * We are expecting a minimum of 2 endpoints - in and out (bulk).
1356 * An optional interrupt is OK (necessary for CBI protocol).
1357 * We will ignore any others.
1358 */
1359 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1360 ep_desc = &iface->ep_desc[i];
1361 /* is it an BULK endpoint? */
1362 if ((ep_desc->bmAttributes &
1363 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1364 if (ep_desc->bEndpointAddress & USB_DIR_IN)
1365 ss->ep_in = ep_desc->bEndpointAddress &
1366 USB_ENDPOINT_NUMBER_MASK;
1367 else
1368 ss->ep_out =
1369 ep_desc->bEndpointAddress &
1370 USB_ENDPOINT_NUMBER_MASK;
1371 }
1372
1373 /* is it an interrupt endpoint? */
1374 if ((ep_desc->bmAttributes &
1375 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1376 ss->ep_int = ep_desc->bEndpointAddress &
1377 USB_ENDPOINT_NUMBER_MASK;
1378 ss->irqinterval = ep_desc->bInterval;
1379 }
1380 }
1381 debug("Endpoints In %d Out %d Int %d\n",
1382 ss->ep_in, ss->ep_out, ss->ep_int);
1383
1384 /* Do some basic sanity checks, and bail if we find a problem */
1385 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1386 !ss->ep_in || !ss->ep_out ||
1387 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1388 debug("Problems with device\n");
1389 return 0;
1390 }
1391 /* set class specific stuff */
1392 /* We only handle certain protocols. Currently, these are
1393 * the only ones.
1394 * The SFF8070 accepts the requests used in u-boot
1395 */
1396 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1397 ss->subclass != US_SC_8070) {
1398 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1399 return 0;
1400 }
1401 if (ss->ep_int) {
1402 /* we had found an interrupt endpoint, prepare irq pipe
1403 * set up the IRQ pipe and handler
1404 */
1405 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1406 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1407 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1408 dev->irq_handle = usb_stor_irq;
1409 }
1410
1411 /* Set the maximum transfer size per host controller setting */
1412 usb_stor_set_max_xfer_blk(dev, ss);
1413
1414 dev->privptr = (void *)ss;
1415 return 1;
1416 }
1417
1418 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1419 struct blk_desc *dev_desc)
1420 {
1421 unsigned char perq, modi;
1422 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2);
1423 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36);
1424 u32 capacity, blksz;
1425 struct scsi_cmd *pccb = &usb_ccb;
1426
1427 pccb->pdata = usb_stor_buf;
1428
1429 dev_desc->target = dev->devnum;
1430 pccb->lun = dev_desc->lun;
1431 debug(" address %d\n", dev_desc->target);
1432
1433 if (usb_inquiry(pccb, ss)) {
1434 debug("%s: usb_inquiry() failed\n", __func__);
1435 return -1;
1436 }
1437
1438 perq = usb_stor_buf[0];
1439 modi = usb_stor_buf[1];
1440
1441 /*
1442 * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1443 * they would not respond to test_unit_ready .
1444 */
1445 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
1446 debug("%s: unknown/unsupported device\n", __func__);
1447 return 0;
1448 }
1449 if ((modi&0x80) == 0x80) {
1450 /* drive is removable */
1451 dev_desc->removable = 1;
1452 }
1453 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8);
1454 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16);
1455 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4);
1456 dev_desc->vendor[8] = 0;
1457 dev_desc->product[16] = 0;
1458 dev_desc->revision[4] = 0;
1459 #ifdef CONFIG_USB_BIN_FIXUP
1460 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1461 (uchar *)dev_desc->product);
1462 #endif /* CONFIG_USB_BIN_FIXUP */
1463 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1464 usb_stor_buf[3]);
1465 if (usb_test_unit_ready(pccb, ss)) {
1466 printf("Device NOT ready\n"
1467 " Request Sense returned %02X %02X %02X\n",
1468 pccb->sense_buf[2], pccb->sense_buf[12],
1469 pccb->sense_buf[13]);
1470 if (dev_desc->removable == 1)
1471 dev_desc->type = perq;
1472 return 0;
1473 }
1474 pccb->pdata = (unsigned char *)cap;
1475 memset(pccb->pdata, 0, 8);
1476 if (usb_read_capacity(pccb, ss) != 0) {
1477 printf("READ_CAP ERROR\n");
1478 ss->flags &= ~USB_READY;
1479 cap[0] = 2880;
1480 cap[1] = 0x200;
1481 }
1482 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]);
1483 #if 0
1484 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1485 cap[0] >>= 16;
1486
1487 cap[0] = cpu_to_be32(cap[0]);
1488 cap[1] = cpu_to_be32(cap[1]);
1489 #endif
1490
1491 capacity = be32_to_cpu(cap[0]) + 1;
1492 blksz = be32_to_cpu(cap[1]);
1493
1494 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz);
1495 dev_desc->lba = capacity;
1496 dev_desc->blksz = blksz;
1497 dev_desc->log2blksz = LOG2(dev_desc->blksz);
1498 dev_desc->type = perq;
1499 debug(" address %d\n", dev_desc->target);
1500
1501 return 1;
1502 }
1503
1504 #if CONFIG_IS_ENABLED(DM_USB)
1505
1506 static int usb_mass_storage_probe(struct udevice *dev)
1507 {
1508 struct usb_device *udev = dev_get_parent_priv(dev);
1509 int ret;
1510
1511 usb_disable_asynch(1); /* asynch transfer not allowed */
1512 ret = usb_stor_probe_device(udev);
1513 usb_disable_asynch(0); /* asynch transfer allowed */
1514
1515 return ret;
1516 }
1517
1518 static const struct udevice_id usb_mass_storage_ids[] = {
1519 { .compatible = "usb-mass-storage" },
1520 { }
1521 };
1522
1523 U_BOOT_DRIVER(usb_mass_storage) = {
1524 .name = "usb_mass_storage",
1525 .id = UCLASS_MASS_STORAGE,
1526 .of_match = usb_mass_storage_ids,
1527 .probe = usb_mass_storage_probe,
1528 #if CONFIG_IS_ENABLED(BLK)
1529 .platdata_auto_alloc_size = sizeof(struct us_data),
1530 #endif
1531 };
1532
1533 UCLASS_DRIVER(usb_mass_storage) = {
1534 .id = UCLASS_MASS_STORAGE,
1535 .name = "usb_mass_storage",
1536 };
1537
1538 static const struct usb_device_id mass_storage_id_table[] = {
1539 {
1540 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1541 .bInterfaceClass = USB_CLASS_MASS_STORAGE
1542 },
1543 { } /* Terminating entry */
1544 };
1545
1546 U_BOOT_USB_DEVICE(usb_mass_storage, mass_storage_id_table);
1547 #endif
1548
1549 #if CONFIG_IS_ENABLED(BLK)
1550 static const struct blk_ops usb_storage_ops = {
1551 .read = usb_stor_read,
1552 .write = usb_stor_write,
1553 };
1554
1555 U_BOOT_DRIVER(usb_storage_blk) = {
1556 .name = "usb_storage_blk",
1557 .id = UCLASS_BLK,
1558 .ops = &usb_storage_ops,
1559 };
1560 #else
1561 U_BOOT_LEGACY_BLK(usb) = {
1562 .if_typename = "usb",
1563 .if_type = IF_TYPE_USB,
1564 .max_devs = USB_MAX_STOR_DEV,
1565 .desc = usb_dev_desc,
1566 };
1567 #endif
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