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SPDX: Convert all of our single license tags to Linux Kernel style
[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 <inttypes.h>
40 #include <mapmem.h>
41 #include <memalign.h>
42 #include <asm/byteorder.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 #ifndef CONFIG_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 #ifndef CONFIG_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 #ifdef CONFIG_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 #ifdef CONFIG_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 #ifdef CONFIG_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 #ifdef CONFIG_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 ret = blk_prepare_device(dev);
232 if (!ret) {
233 usb_max_devs++;
234 debug("%s: Found device %p\n", __func__, udev);
235 } else {
236 debug("usb_stor_get_info: Invalid device\n");
237 ret = device_unbind(dev);
238 if (ret)
239 return ret;
240 }
241 }
242 #else
243 /* We don't have space to even probe if we hit the maximum */
244 if (usb_max_devs == USB_MAX_STOR_DEV) {
245 printf("max USB Storage Device reached: %d stopping\n",
246 usb_max_devs);
247 return -ENOSPC;
248 }
249
250 if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs]))
251 return 0;
252
253 /*
254 * OK, it's a storage device. Iterate over its LUNs and populate
255 * usb_dev_desc'
256 */
257 start = usb_max_devs;
258
259 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
260 for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
261 lun++) {
262 struct blk_desc *blkdev;
263
264 blkdev = &usb_dev_desc[usb_max_devs];
265 memset(blkdev, '\0', sizeof(struct blk_desc));
266 blkdev->if_type = IF_TYPE_USB;
267 blkdev->devnum = usb_max_devs;
268 blkdev->part_type = PART_TYPE_UNKNOWN;
269 blkdev->target = 0xff;
270 blkdev->type = DEV_TYPE_UNKNOWN;
271 blkdev->block_read = usb_stor_read;
272 blkdev->block_write = usb_stor_write;
273 blkdev->lun = lun;
274 blkdev->priv = udev;
275
276 if (usb_stor_get_info(udev, &usb_stor[start],
277 &usb_dev_desc[usb_max_devs]) == 1) {
278 debug("partype: %d\n", blkdev->part_type);
279 part_init(blkdev);
280 debug("partype: %d\n", blkdev->part_type);
281 usb_max_devs++;
282 debug("%s: Found device %p\n", __func__, udev);
283 }
284 }
285 #endif
286
287 return 0;
288 }
289
290 void usb_stor_reset(void)
291 {
292 usb_max_devs = 0;
293 }
294
295 /*******************************************************************************
296 * scan the usb and reports device info
297 * to the user if mode = 1
298 * returns current device or -1 if no
299 */
300 int usb_stor_scan(int mode)
301 {
302 if (mode == 1)
303 printf(" scanning usb for storage devices... ");
304
305 #ifndef CONFIG_DM_USB
306 unsigned char i;
307
308 usb_disable_asynch(1); /* asynch transfer not allowed */
309
310 usb_stor_reset();
311 for (i = 0; i < USB_MAX_DEVICE; i++) {
312 struct usb_device *dev;
313
314 dev = usb_get_dev_index(i); /* get device */
315 debug("i=%d\n", i);
316 if (usb_stor_probe_device(dev))
317 break;
318 } /* for */
319
320 usb_disable_asynch(0); /* asynch transfer allowed */
321 #endif
322 printf("%d Storage Device(s) found\n", usb_max_devs);
323 if (usb_max_devs > 0)
324 return 0;
325 return -1;
326 }
327
328 static int usb_stor_irq(struct usb_device *dev)
329 {
330 struct us_data *us;
331 us = (struct us_data *)dev->privptr;
332
333 if (us->ip_wanted)
334 us->ip_wanted = 0;
335 return 0;
336 }
337
338
339 #ifdef DEBUG
340
341 static void usb_show_srb(struct scsi_cmd *pccb)
342 {
343 int i;
344 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
345 for (i = 0; i < 12; i++)
346 printf("%02X ", pccb->cmd[i]);
347 printf("\n");
348 }
349
350 static void display_int_status(unsigned long tmp)
351 {
352 printf("Status: %s %s %s %s %s %s %s\n",
353 (tmp & USB_ST_ACTIVE) ? "Active" : "",
354 (tmp & USB_ST_STALLED) ? "Stalled" : "",
355 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
356 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
357 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
358 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
359 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
360 }
361 #endif
362 /***********************************************************************
363 * Data transfer routines
364 ***********************************************************************/
365
366 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
367 {
368 int max_size;
369 int this_xfer;
370 int result;
371 int partial;
372 int maxtry;
373 int stat;
374
375 /* determine the maximum packet size for these transfers */
376 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
377
378 /* while we have data left to transfer */
379 while (length) {
380
381 /* calculate how long this will be -- maximum or a remainder */
382 this_xfer = length > max_size ? max_size : length;
383 length -= this_xfer;
384
385 /* setup the retry counter */
386 maxtry = 10;
387
388 /* set up the transfer loop */
389 do {
390 /* transfer the data */
391 debug("Bulk xfer 0x%lx(%d) try #%d\n",
392 (ulong)map_to_sysmem(buf), this_xfer,
393 11 - maxtry);
394 result = usb_bulk_msg(us->pusb_dev, pipe, buf,
395 this_xfer, &partial,
396 USB_CNTL_TIMEOUT * 5);
397 debug("bulk_msg returned %d xferred %d/%d\n",
398 result, partial, this_xfer);
399 if (us->pusb_dev->status != 0) {
400 /* if we stall, we need to clear it before
401 * we go on
402 */
403 #ifdef DEBUG
404 display_int_status(us->pusb_dev->status);
405 #endif
406 if (us->pusb_dev->status & USB_ST_STALLED) {
407 debug("stalled ->clearing endpoint" \
408 "halt for pipe 0x%x\n", pipe);
409 stat = us->pusb_dev->status;
410 usb_clear_halt(us->pusb_dev, pipe);
411 us->pusb_dev->status = stat;
412 if (this_xfer == partial) {
413 debug("bulk transferred" \
414 "with error %lX," \
415 " but data ok\n",
416 us->pusb_dev->status);
417 return 0;
418 }
419 else
420 return result;
421 }
422 if (us->pusb_dev->status & USB_ST_NAK_REC) {
423 debug("Device NAKed bulk_msg\n");
424 return result;
425 }
426 debug("bulk transferred with error");
427 if (this_xfer == partial) {
428 debug(" %ld, but data ok\n",
429 us->pusb_dev->status);
430 return 0;
431 }
432 /* if our try counter reaches 0, bail out */
433 debug(" %ld, data %d\n",
434 us->pusb_dev->status, partial);
435 if (!maxtry--)
436 return result;
437 }
438 /* update to show what data was transferred */
439 this_xfer -= partial;
440 buf += partial;
441 /* continue until this transfer is done */
442 } while (this_xfer);
443 }
444
445 /* if we get here, we're done and successful */
446 return 0;
447 }
448
449 static int usb_stor_BBB_reset(struct us_data *us)
450 {
451 int result;
452 unsigned int pipe;
453
454 /*
455 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
456 *
457 * For Reset Recovery the host shall issue in the following order:
458 * a) a Bulk-Only Mass Storage Reset
459 * b) a Clear Feature HALT to the Bulk-In endpoint
460 * c) a Clear Feature HALT to the Bulk-Out endpoint
461 *
462 * This is done in 3 steps.
463 *
464 * If the reset doesn't succeed, the device should be port reset.
465 *
466 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
467 */
468 debug("BBB_reset\n");
469 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
470 US_BBB_RESET,
471 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
472 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
473
474 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
475 debug("RESET:stall\n");
476 return -1;
477 }
478
479 /* long wait for reset */
480 mdelay(150);
481 debug("BBB_reset result %d: status %lX reset\n",
482 result, us->pusb_dev->status);
483 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
484 result = usb_clear_halt(us->pusb_dev, pipe);
485 /* long wait for reset */
486 mdelay(150);
487 debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
488 result, us->pusb_dev->status);
489 /* long wait for reset */
490 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
491 result = usb_clear_halt(us->pusb_dev, pipe);
492 mdelay(150);
493 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
494 result, us->pusb_dev->status);
495 debug("BBB_reset done\n");
496 return 0;
497 }
498
499 /* FIXME: this reset function doesn't really reset the port, and it
500 * should. Actually it should probably do what it's doing here, and
501 * reset the port physically
502 */
503 static int usb_stor_CB_reset(struct us_data *us)
504 {
505 unsigned char cmd[12];
506 int result;
507
508 debug("CB_reset\n");
509 memset(cmd, 0xff, sizeof(cmd));
510 cmd[0] = SCSI_SEND_DIAG;
511 cmd[1] = 4;
512 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
513 US_CBI_ADSC,
514 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
515 0, us->ifnum, cmd, sizeof(cmd),
516 USB_CNTL_TIMEOUT * 5);
517
518 /* long wait for reset */
519 mdelay(1500);
520 debug("CB_reset result %d: status %lX clearing endpoint halt\n",
521 result, us->pusb_dev->status);
522 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
523 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
524
525 debug("CB_reset done\n");
526 return 0;
527 }
528
529 /*
530 * Set up the command for a BBB device. Note that the actual SCSI
531 * command is copied into cbw.CBWCDB.
532 */
533 static int usb_stor_BBB_comdat(struct scsi_cmd *srb, struct us_data *us)
534 {
535 int result;
536 int actlen;
537 int dir_in;
538 unsigned int pipe;
539 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1);
540
541 dir_in = US_DIRECTION(srb->cmd[0]);
542
543 #ifdef BBB_COMDAT_TRACE
544 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
545 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
546 srb->pdata);
547 if (srb->cmdlen) {
548 for (result = 0; result < srb->cmdlen; result++)
549 printf("cmd[%d] %#x ", result, srb->cmd[result]);
550 printf("\n");
551 }
552 #endif
553 /* sanity checks */
554 if (!(srb->cmdlen <= CBWCDBLENGTH)) {
555 debug("usb_stor_BBB_comdat:cmdlen too large\n");
556 return -1;
557 }
558
559 /* always OUT to the ep */
560 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
561
562 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
563 cbw->dCBWTag = cpu_to_le32(CBWTag++);
564 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
565 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
566 cbw->bCBWLUN = srb->lun;
567 cbw->bCDBLength = srb->cmdlen;
568 /* copy the command data into the CBW command data buffer */
569 /* DST SRC LEN!!! */
570
571 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
572 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
573 &actlen, USB_CNTL_TIMEOUT * 5);
574 if (result < 0)
575 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
576 return result;
577 }
578
579 /* FIXME: we also need a CBI_command which sets up the completion
580 * interrupt, and waits for it
581 */
582 static int usb_stor_CB_comdat(struct scsi_cmd *srb, struct us_data *us)
583 {
584 int result = 0;
585 int dir_in, retry;
586 unsigned int pipe;
587 unsigned long status;
588
589 retry = 5;
590 dir_in = US_DIRECTION(srb->cmd[0]);
591
592 if (dir_in)
593 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
594 else
595 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
596
597 while (retry--) {
598 debug("CBI gets a command: Try %d\n", 5 - retry);
599 #ifdef DEBUG
600 usb_show_srb(srb);
601 #endif
602 /* let's send the command via the control pipe */
603 result = usb_control_msg(us->pusb_dev,
604 usb_sndctrlpipe(us->pusb_dev , 0),
605 US_CBI_ADSC,
606 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
607 0, us->ifnum,
608 srb->cmd, srb->cmdlen,
609 USB_CNTL_TIMEOUT * 5);
610 debug("CB_transport: control msg returned %d, status %lX\n",
611 result, us->pusb_dev->status);
612 /* check the return code for the command */
613 if (result < 0) {
614 if (us->pusb_dev->status & USB_ST_STALLED) {
615 status = us->pusb_dev->status;
616 debug(" stall during command found," \
617 " clear pipe\n");
618 usb_clear_halt(us->pusb_dev,
619 usb_sndctrlpipe(us->pusb_dev, 0));
620 us->pusb_dev->status = status;
621 }
622 debug(" error during command %02X" \
623 " Stat = %lX\n", srb->cmd[0],
624 us->pusb_dev->status);
625 return result;
626 }
627 /* transfer the data payload for this command, if one exists*/
628
629 debug("CB_transport: control msg returned %d," \
630 " direction is %s to go 0x%lx\n", result,
631 dir_in ? "IN" : "OUT", srb->datalen);
632 if (srb->datalen) {
633 result = us_one_transfer(us, pipe, (char *)srb->pdata,
634 srb->datalen);
635 debug("CBI attempted to transfer data," \
636 " result is %d status %lX, len %d\n",
637 result, us->pusb_dev->status,
638 us->pusb_dev->act_len);
639 if (!(us->pusb_dev->status & USB_ST_NAK_REC))
640 break;
641 } /* if (srb->datalen) */
642 else
643 break;
644 }
645 /* return result */
646
647 return result;
648 }
649
650
651 static int usb_stor_CBI_get_status(struct scsi_cmd *srb, struct us_data *us)
652 {
653 int timeout;
654
655 us->ip_wanted = 1;
656 submit_int_msg(us->pusb_dev, us->irqpipe,
657 (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
658 timeout = 1000;
659 while (timeout--) {
660 if (us->ip_wanted == 0)
661 break;
662 mdelay(10);
663 }
664 if (us->ip_wanted) {
665 printf(" Did not get interrupt on CBI\n");
666 us->ip_wanted = 0;
667 return USB_STOR_TRANSPORT_ERROR;
668 }
669 debug("Got interrupt data 0x%x, transferred %d status 0x%lX\n",
670 us->ip_data, us->pusb_dev->irq_act_len,
671 us->pusb_dev->irq_status);
672 /* UFI gives us ASC and ASCQ, like a request sense */
673 if (us->subclass == US_SC_UFI) {
674 if (srb->cmd[0] == SCSI_REQ_SENSE ||
675 srb->cmd[0] == SCSI_INQUIRY)
676 return USB_STOR_TRANSPORT_GOOD; /* Good */
677 else if (us->ip_data)
678 return USB_STOR_TRANSPORT_FAILED;
679 else
680 return USB_STOR_TRANSPORT_GOOD;
681 }
682 /* otherwise, we interpret the data normally */
683 switch (us->ip_data) {
684 case 0x0001:
685 return USB_STOR_TRANSPORT_GOOD;
686 case 0x0002:
687 return USB_STOR_TRANSPORT_FAILED;
688 default:
689 return USB_STOR_TRANSPORT_ERROR;
690 } /* switch */
691 return USB_STOR_TRANSPORT_ERROR;
692 }
693
694 #define USB_TRANSPORT_UNKNOWN_RETRY 5
695 #define USB_TRANSPORT_NOT_READY_RETRY 10
696
697 /* clear a stall on an endpoint - special for BBB devices */
698 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
699 {
700 /* ENDPOINT_HALT = 0, so set value to 0 */
701 return usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
702 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
703 endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
704 }
705
706 static int usb_stor_BBB_transport(struct scsi_cmd *srb, struct us_data *us)
707 {
708 int result, retry;
709 int dir_in;
710 int actlen, data_actlen;
711 unsigned int pipe, pipein, pipeout;
712 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1);
713 #ifdef BBB_XPORT_TRACE
714 unsigned char *ptr;
715 int index;
716 #endif
717
718 dir_in = US_DIRECTION(srb->cmd[0]);
719
720 /* COMMAND phase */
721 debug("COMMAND phase\n");
722 result = usb_stor_BBB_comdat(srb, us);
723 if (result < 0) {
724 debug("failed to send CBW status %ld\n",
725 us->pusb_dev->status);
726 usb_stor_BBB_reset(us);
727 return USB_STOR_TRANSPORT_FAILED;
728 }
729 if (!(us->flags & USB_READY))
730 mdelay(5);
731 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
732 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
733 /* DATA phase + error handling */
734 data_actlen = 0;
735 /* no data, go immediately to the STATUS phase */
736 if (srb->datalen == 0)
737 goto st;
738 debug("DATA phase\n");
739 if (dir_in)
740 pipe = pipein;
741 else
742 pipe = pipeout;
743
744 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
745 &data_actlen, USB_CNTL_TIMEOUT * 5);
746 /* special handling of STALL in DATA phase */
747 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
748 debug("DATA:stall\n");
749 /* clear the STALL on the endpoint */
750 result = usb_stor_BBB_clear_endpt_stall(us,
751 dir_in ? us->ep_in : us->ep_out);
752 if (result >= 0)
753 /* continue on to STATUS phase */
754 goto st;
755 }
756 if (result < 0) {
757 debug("usb_bulk_msg error status %ld\n",
758 us->pusb_dev->status);
759 usb_stor_BBB_reset(us);
760 return USB_STOR_TRANSPORT_FAILED;
761 }
762 #ifdef BBB_XPORT_TRACE
763 for (index = 0; index < data_actlen; index++)
764 printf("pdata[%d] %#x ", index, srb->pdata[index]);
765 printf("\n");
766 #endif
767 /* STATUS phase + error handling */
768 st:
769 retry = 0;
770 again:
771 debug("STATUS phase\n");
772 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
773 &actlen, USB_CNTL_TIMEOUT*5);
774
775 /* special handling of STALL in STATUS phase */
776 if ((result < 0) && (retry < 1) &&
777 (us->pusb_dev->status & USB_ST_STALLED)) {
778 debug("STATUS:stall\n");
779 /* clear the STALL on the endpoint */
780 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
781 if (result >= 0 && (retry++ < 1))
782 /* do a retry */
783 goto again;
784 }
785 if (result < 0) {
786 debug("usb_bulk_msg error status %ld\n",
787 us->pusb_dev->status);
788 usb_stor_BBB_reset(us);
789 return USB_STOR_TRANSPORT_FAILED;
790 }
791 #ifdef BBB_XPORT_TRACE
792 ptr = (unsigned char *)csw;
793 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
794 printf("ptr[%d] %#x ", index, ptr[index]);
795 printf("\n");
796 #endif
797 /* misuse pipe to get the residue */
798 pipe = le32_to_cpu(csw->dCSWDataResidue);
799 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
800 pipe = srb->datalen - data_actlen;
801 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
802 debug("!CSWSIGNATURE\n");
803 usb_stor_BBB_reset(us);
804 return USB_STOR_TRANSPORT_FAILED;
805 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
806 debug("!Tag\n");
807 usb_stor_BBB_reset(us);
808 return USB_STOR_TRANSPORT_FAILED;
809 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
810 debug(">PHASE\n");
811 usb_stor_BBB_reset(us);
812 return USB_STOR_TRANSPORT_FAILED;
813 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
814 debug("=PHASE\n");
815 usb_stor_BBB_reset(us);
816 return USB_STOR_TRANSPORT_FAILED;
817 } else if (data_actlen > srb->datalen) {
818 debug("transferred %dB instead of %ldB\n",
819 data_actlen, srb->datalen);
820 return USB_STOR_TRANSPORT_FAILED;
821 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
822 debug("FAILED\n");
823 return USB_STOR_TRANSPORT_FAILED;
824 }
825
826 return result;
827 }
828
829 static int usb_stor_CB_transport(struct scsi_cmd *srb, struct us_data *us)
830 {
831 int result, status;
832 struct scsi_cmd *psrb;
833 struct scsi_cmd reqsrb;
834 int retry, notready;
835
836 psrb = &reqsrb;
837 status = USB_STOR_TRANSPORT_GOOD;
838 retry = 0;
839 notready = 0;
840 /* issue the command */
841 do_retry:
842 result = usb_stor_CB_comdat(srb, us);
843 debug("command / Data returned %d, status %lX\n",
844 result, us->pusb_dev->status);
845 /* if this is an CBI Protocol, get IRQ */
846 if (us->protocol == US_PR_CBI) {
847 status = usb_stor_CBI_get_status(srb, us);
848 /* if the status is error, report it */
849 if (status == USB_STOR_TRANSPORT_ERROR) {
850 debug(" USB CBI Command Error\n");
851 return status;
852 }
853 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
854 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
855 if (!us->ip_data) {
856 /* if the status is good, report it */
857 if (status == USB_STOR_TRANSPORT_GOOD) {
858 debug(" USB CBI Command Good\n");
859 return status;
860 }
861 }
862 }
863 /* do we have to issue an auto request? */
864 /* HERE we have to check the result */
865 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
866 debug("ERROR %lX\n", us->pusb_dev->status);
867 us->transport_reset(us);
868 return USB_STOR_TRANSPORT_ERROR;
869 }
870 if ((us->protocol == US_PR_CBI) &&
871 ((srb->cmd[0] == SCSI_REQ_SENSE) ||
872 (srb->cmd[0] == SCSI_INQUIRY))) {
873 /* do not issue an autorequest after request sense */
874 debug("No auto request and good\n");
875 return USB_STOR_TRANSPORT_GOOD;
876 }
877 /* issue an request_sense */
878 memset(&psrb->cmd[0], 0, 12);
879 psrb->cmd[0] = SCSI_REQ_SENSE;
880 psrb->cmd[1] = srb->lun << 5;
881 psrb->cmd[4] = 18;
882 psrb->datalen = 18;
883 psrb->pdata = &srb->sense_buf[0];
884 psrb->cmdlen = 12;
885 /* issue the command */
886 result = usb_stor_CB_comdat(psrb, us);
887 debug("auto request returned %d\n", result);
888 /* if this is an CBI Protocol, get IRQ */
889 if (us->protocol == US_PR_CBI)
890 status = usb_stor_CBI_get_status(psrb, us);
891
892 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
893 debug(" AUTO REQUEST ERROR %ld\n",
894 us->pusb_dev->status);
895 return USB_STOR_TRANSPORT_ERROR;
896 }
897 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
898 srb->sense_buf[0], srb->sense_buf[2],
899 srb->sense_buf[12], srb->sense_buf[13]);
900 /* Check the auto request result */
901 if ((srb->sense_buf[2] == 0) &&
902 (srb->sense_buf[12] == 0) &&
903 (srb->sense_buf[13] == 0)) {
904 /* ok, no sense */
905 return USB_STOR_TRANSPORT_GOOD;
906 }
907
908 /* Check the auto request result */
909 switch (srb->sense_buf[2]) {
910 case 0x01:
911 /* Recovered Error */
912 return USB_STOR_TRANSPORT_GOOD;
913 break;
914 case 0x02:
915 /* Not Ready */
916 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
917 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
918 " 0x%02X (NOT READY)\n", srb->cmd[0],
919 srb->sense_buf[0], srb->sense_buf[2],
920 srb->sense_buf[12], srb->sense_buf[13]);
921 return USB_STOR_TRANSPORT_FAILED;
922 } else {
923 mdelay(100);
924 goto do_retry;
925 }
926 break;
927 default:
928 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
929 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
930 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
931 srb->sense_buf[2], srb->sense_buf[12],
932 srb->sense_buf[13]);
933 return USB_STOR_TRANSPORT_FAILED;
934 } else
935 goto do_retry;
936 break;
937 }
938 return USB_STOR_TRANSPORT_FAILED;
939 }
940
941 static void usb_stor_set_max_xfer_blk(struct usb_device *udev,
942 struct us_data *us)
943 {
944 unsigned short blk;
945 size_t __maybe_unused size;
946 int __maybe_unused ret;
947
948 #ifndef CONFIG_DM_USB
949 #ifdef CONFIG_USB_EHCI_HCD
950 /*
951 * The U-Boot EHCI driver can handle any transfer length as long as
952 * there is enough free heap space left, but the SCSI READ(10) and
953 * WRITE(10) commands are limited to 65535 blocks.
954 */
955 blk = USHRT_MAX;
956 #else
957 blk = 20;
958 #endif
959 #else
960 ret = usb_get_max_xfer_size(udev, (size_t *)&size);
961 if (ret < 0) {
962 /* unimplemented, let's use default 20 */
963 blk = 20;
964 } else {
965 if (size > USHRT_MAX * 512)
966 size = USHRT_MAX * 512;
967 blk = size / 512;
968 }
969 #endif
970
971 us->max_xfer_blk = blk;
972 }
973
974 static int usb_inquiry(struct scsi_cmd *srb, struct us_data *ss)
975 {
976 int retry, i;
977 retry = 5;
978 do {
979 memset(&srb->cmd[0], 0, 12);
980 srb->cmd[0] = SCSI_INQUIRY;
981 srb->cmd[1] = srb->lun << 5;
982 srb->cmd[4] = 36;
983 srb->datalen = 36;
984 srb->cmdlen = 12;
985 i = ss->transport(srb, ss);
986 debug("inquiry returns %d\n", i);
987 if (i == 0)
988 break;
989 } while (--retry);
990
991 if (!retry) {
992 printf("error in inquiry\n");
993 return -1;
994 }
995 return 0;
996 }
997
998 static int usb_request_sense(struct scsi_cmd *srb, struct us_data *ss)
999 {
1000 char *ptr;
1001
1002 ptr = (char *)srb->pdata;
1003 memset(&srb->cmd[0], 0, 12);
1004 srb->cmd[0] = SCSI_REQ_SENSE;
1005 srb->cmd[1] = srb->lun << 5;
1006 srb->cmd[4] = 18;
1007 srb->datalen = 18;
1008 srb->pdata = &srb->sense_buf[0];
1009 srb->cmdlen = 12;
1010 ss->transport(srb, ss);
1011 debug("Request Sense returned %02X %02X %02X\n",
1012 srb->sense_buf[2], srb->sense_buf[12],
1013 srb->sense_buf[13]);
1014 srb->pdata = (uchar *)ptr;
1015 return 0;
1016 }
1017
1018 static int usb_test_unit_ready(struct scsi_cmd *srb, struct us_data *ss)
1019 {
1020 int retries = 10;
1021
1022 do {
1023 memset(&srb->cmd[0], 0, 12);
1024 srb->cmd[0] = SCSI_TST_U_RDY;
1025 srb->cmd[1] = srb->lun << 5;
1026 srb->datalen = 0;
1027 srb->cmdlen = 12;
1028 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) {
1029 ss->flags |= USB_READY;
1030 return 0;
1031 }
1032 usb_request_sense(srb, ss);
1033 /*
1034 * Check the Key Code Qualifier, if it matches
1035 * "Not Ready - medium not present"
1036 * (the sense Key equals 0x2 and the ASC is 0x3a)
1037 * return immediately as the medium being absent won't change
1038 * unless there is a user action.
1039 */
1040 if ((srb->sense_buf[2] == 0x02) &&
1041 (srb->sense_buf[12] == 0x3a))
1042 return -1;
1043 mdelay(100);
1044 } while (retries--);
1045
1046 return -1;
1047 }
1048
1049 static int usb_read_capacity(struct scsi_cmd *srb, struct us_data *ss)
1050 {
1051 int retry;
1052 /* XXX retries */
1053 retry = 3;
1054 do {
1055 memset(&srb->cmd[0], 0, 12);
1056 srb->cmd[0] = SCSI_RD_CAPAC;
1057 srb->cmd[1] = srb->lun << 5;
1058 srb->datalen = 8;
1059 srb->cmdlen = 12;
1060 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
1061 return 0;
1062 } while (retry--);
1063
1064 return -1;
1065 }
1066
1067 static int usb_read_10(struct scsi_cmd *srb, struct us_data *ss,
1068 unsigned long start, unsigned short blocks)
1069 {
1070 memset(&srb->cmd[0], 0, 12);
1071 srb->cmd[0] = SCSI_READ10;
1072 srb->cmd[1] = srb->lun << 5;
1073 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1074 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1075 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1076 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1077 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1078 srb->cmd[8] = (unsigned char) blocks & 0xff;
1079 srb->cmdlen = 12;
1080 debug("read10: start %lx blocks %x\n", start, blocks);
1081 return ss->transport(srb, ss);
1082 }
1083
1084 static int usb_write_10(struct scsi_cmd *srb, struct us_data *ss,
1085 unsigned long start, unsigned short blocks)
1086 {
1087 memset(&srb->cmd[0], 0, 12);
1088 srb->cmd[0] = SCSI_WRITE10;
1089 srb->cmd[1] = srb->lun << 5;
1090 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1091 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1092 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1093 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1094 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1095 srb->cmd[8] = (unsigned char) blocks & 0xff;
1096 srb->cmdlen = 12;
1097 debug("write10: start %lx blocks %x\n", start, blocks);
1098 return ss->transport(srb, ss);
1099 }
1100
1101
1102 #ifdef CONFIG_USB_BIN_FIXUP
1103 /*
1104 * Some USB storage devices queried for SCSI identification data respond with
1105 * binary strings, which if output to the console freeze the terminal. The
1106 * workaround is to modify the vendor and product strings read from such
1107 * device with proper values (as reported by 'usb info').
1108 *
1109 * Vendor and product length limits are taken from the definition of
1110 * struct blk_desc in include/part.h.
1111 */
1112 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1113 unsigned char vendor[],
1114 unsigned char product[]) {
1115 const unsigned char max_vendor_len = 40;
1116 const unsigned char max_product_len = 20;
1117 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1118 strncpy((char *)vendor, "SMSC", max_vendor_len);
1119 strncpy((char *)product, "Flash Media Cntrller",
1120 max_product_len);
1121 }
1122 }
1123 #endif /* CONFIG_USB_BIN_FIXUP */
1124
1125 #ifdef CONFIG_BLK
1126 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr,
1127 lbaint_t blkcnt, void *buffer)
1128 #else
1129 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
1130 lbaint_t blkcnt, void *buffer)
1131 #endif
1132 {
1133 lbaint_t start, blks;
1134 uintptr_t buf_addr;
1135 unsigned short smallblks;
1136 struct usb_device *udev;
1137 struct us_data *ss;
1138 int retry;
1139 struct scsi_cmd *srb = &usb_ccb;
1140 #ifdef CONFIG_BLK
1141 struct blk_desc *block_dev;
1142 #endif
1143
1144 if (blkcnt == 0)
1145 return 0;
1146 /* Setup device */
1147 #ifdef CONFIG_BLK
1148 block_dev = dev_get_uclass_platdata(dev);
1149 udev = dev_get_parent_priv(dev_get_parent(dev));
1150 debug("\nusb_read: udev %d\n", block_dev->devnum);
1151 #else
1152 debug("\nusb_read: udev %d\n", block_dev->devnum);
1153 udev = usb_dev_desc[block_dev->devnum].priv;
1154 if (!udev) {
1155 debug("%s: No device\n", __func__);
1156 return 0;
1157 }
1158 #endif
1159 ss = (struct us_data *)udev->privptr;
1160
1161 usb_disable_asynch(1); /* asynch transfer not allowed */
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 %"
1168 PRIxPTR "\n", 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 usb_request_sense(srb, ss);
1186 if (retry--)
1187 goto retry_it;
1188 blkcnt -= blks;
1189 break;
1190 }
1191 start += smallblks;
1192 blks -= smallblks;
1193 buf_addr += srb->datalen;
1194 } while (blks != 0);
1195 ss->flags &= ~USB_READY;
1196
1197 debug("usb_read: end startblk " LBAF
1198 ", blccnt %x buffer %" PRIxPTR "\n",
1199 start, smallblks, buf_addr);
1200
1201 usb_disable_asynch(0); /* asynch transfer allowed */
1202 if (blkcnt >= ss->max_xfer_blk)
1203 debug("\n");
1204 return blkcnt;
1205 }
1206
1207 #ifdef CONFIG_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 #ifdef CONFIG_BLK
1223 struct blk_desc *block_dev;
1224 #endif
1225
1226 if (blkcnt == 0)
1227 return 0;
1228
1229 /* Setup device */
1230 #ifdef CONFIG_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
1246 srb->lun = block_dev->lun;
1247 buf_addr = (uintptr_t)buffer;
1248 start = blknr;
1249 blks = blkcnt;
1250
1251 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF " buffer %"
1252 PRIxPTR "\n", block_dev->devnum, start, blks, buf_addr);
1253
1254 do {
1255 /* If write fails retry for max retry count else
1256 * return with number of blocks written successfully.
1257 */
1258 retry = 2;
1259 srb->pdata = (unsigned char *)buf_addr;
1260 if (blks > ss->max_xfer_blk)
1261 smallblks = ss->max_xfer_blk;
1262 else
1263 smallblks = (unsigned short) blks;
1264 retry_it:
1265 if (smallblks == ss->max_xfer_blk)
1266 usb_show_progress();
1267 srb->datalen = block_dev->blksz * smallblks;
1268 srb->pdata = (unsigned char *)buf_addr;
1269 if (usb_write_10(srb, ss, start, smallblks)) {
1270 debug("Write ERROR\n");
1271 usb_request_sense(srb, ss);
1272 if (retry--)
1273 goto retry_it;
1274 blkcnt -= blks;
1275 break;
1276 }
1277 start += smallblks;
1278 blks -= smallblks;
1279 buf_addr += srb->datalen;
1280 } while (blks != 0);
1281 ss->flags &= ~USB_READY;
1282
1283 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %"
1284 PRIxPTR "\n", start, smallblks, buf_addr);
1285
1286 usb_disable_asynch(0); /* asynch transfer allowed */
1287 if (blkcnt >= ss->max_xfer_blk)
1288 debug("\n");
1289 return blkcnt;
1290
1291 }
1292
1293 /* Probe to see if a new device is actually a Storage device */
1294 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1295 struct us_data *ss)
1296 {
1297 struct usb_interface *iface;
1298 int i;
1299 struct usb_endpoint_descriptor *ep_desc;
1300 unsigned int flags = 0;
1301
1302 /* let's examine the device now */
1303 iface = &dev->config.if_desc[ifnum];
1304
1305 if (dev->descriptor.bDeviceClass != 0 ||
1306 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1307 iface->desc.bInterfaceSubClass < US_SC_MIN ||
1308 iface->desc.bInterfaceSubClass > US_SC_MAX) {
1309 debug("Not mass storage\n");
1310 /* if it's not a mass storage, we go no further */
1311 return 0;
1312 }
1313
1314 memset(ss, 0, sizeof(struct us_data));
1315
1316 /* At this point, we know we've got a live one */
1317 debug("\n\nUSB Mass Storage device detected\n");
1318
1319 /* Initialize the us_data structure with some useful info */
1320 ss->flags = flags;
1321 ss->ifnum = ifnum;
1322 ss->pusb_dev = dev;
1323 ss->attention_done = 0;
1324 ss->subclass = iface->desc.bInterfaceSubClass;
1325 ss->protocol = iface->desc.bInterfaceProtocol;
1326
1327 /* set the handler pointers based on the protocol */
1328 debug("Transport: ");
1329 switch (ss->protocol) {
1330 case US_PR_CB:
1331 debug("Control/Bulk\n");
1332 ss->transport = usb_stor_CB_transport;
1333 ss->transport_reset = usb_stor_CB_reset;
1334 break;
1335
1336 case US_PR_CBI:
1337 debug("Control/Bulk/Interrupt\n");
1338 ss->transport = usb_stor_CB_transport;
1339 ss->transport_reset = usb_stor_CB_reset;
1340 break;
1341 case US_PR_BULK:
1342 debug("Bulk/Bulk/Bulk\n");
1343 ss->transport = usb_stor_BBB_transport;
1344 ss->transport_reset = usb_stor_BBB_reset;
1345 break;
1346 default:
1347 printf("USB Storage Transport unknown / not yet implemented\n");
1348 return 0;
1349 break;
1350 }
1351
1352 /*
1353 * We are expecting a minimum of 2 endpoints - in and out (bulk).
1354 * An optional interrupt is OK (necessary for CBI protocol).
1355 * We will ignore any others.
1356 */
1357 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1358 ep_desc = &iface->ep_desc[i];
1359 /* is it an BULK endpoint? */
1360 if ((ep_desc->bmAttributes &
1361 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1362 if (ep_desc->bEndpointAddress & USB_DIR_IN)
1363 ss->ep_in = ep_desc->bEndpointAddress &
1364 USB_ENDPOINT_NUMBER_MASK;
1365 else
1366 ss->ep_out =
1367 ep_desc->bEndpointAddress &
1368 USB_ENDPOINT_NUMBER_MASK;
1369 }
1370
1371 /* is it an interrupt endpoint? */
1372 if ((ep_desc->bmAttributes &
1373 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1374 ss->ep_int = ep_desc->bEndpointAddress &
1375 USB_ENDPOINT_NUMBER_MASK;
1376 ss->irqinterval = ep_desc->bInterval;
1377 }
1378 }
1379 debug("Endpoints In %d Out %d Int %d\n",
1380 ss->ep_in, ss->ep_out, ss->ep_int);
1381
1382 /* Do some basic sanity checks, and bail if we find a problem */
1383 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1384 !ss->ep_in || !ss->ep_out ||
1385 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1386 debug("Problems with device\n");
1387 return 0;
1388 }
1389 /* set class specific stuff */
1390 /* We only handle certain protocols. Currently, these are
1391 * the only ones.
1392 * The SFF8070 accepts the requests used in u-boot
1393 */
1394 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1395 ss->subclass != US_SC_8070) {
1396 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1397 return 0;
1398 }
1399 if (ss->ep_int) {
1400 /* we had found an interrupt endpoint, prepare irq pipe
1401 * set up the IRQ pipe and handler
1402 */
1403 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1404 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1405 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1406 dev->irq_handle = usb_stor_irq;
1407 }
1408
1409 /* Set the maximum transfer size per host controller setting */
1410 usb_stor_set_max_xfer_blk(dev, ss);
1411
1412 dev->privptr = (void *)ss;
1413 return 1;
1414 }
1415
1416 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1417 struct blk_desc *dev_desc)
1418 {
1419 unsigned char perq, modi;
1420 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2);
1421 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36);
1422 u32 capacity, blksz;
1423 struct scsi_cmd *pccb = &usb_ccb;
1424
1425 pccb->pdata = usb_stor_buf;
1426
1427 dev_desc->target = dev->devnum;
1428 pccb->lun = dev_desc->lun;
1429 debug(" address %d\n", dev_desc->target);
1430
1431 if (usb_inquiry(pccb, ss)) {
1432 debug("%s: usb_inquiry() failed\n", __func__);
1433 return -1;
1434 }
1435
1436 perq = usb_stor_buf[0];
1437 modi = usb_stor_buf[1];
1438
1439 /*
1440 * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1441 * they would not respond to test_unit_ready .
1442 */
1443 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
1444 debug("%s: unknown/unsupported device\n", __func__);
1445 return 0;
1446 }
1447 if ((modi&0x80) == 0x80) {
1448 /* drive is removable */
1449 dev_desc->removable = 1;
1450 }
1451 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8);
1452 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16);
1453 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4);
1454 dev_desc->vendor[8] = 0;
1455 dev_desc->product[16] = 0;
1456 dev_desc->revision[4] = 0;
1457 #ifdef CONFIG_USB_BIN_FIXUP
1458 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1459 (uchar *)dev_desc->product);
1460 #endif /* CONFIG_USB_BIN_FIXUP */
1461 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1462 usb_stor_buf[3]);
1463 if (usb_test_unit_ready(pccb, ss)) {
1464 printf("Device NOT ready\n"
1465 " Request Sense returned %02X %02X %02X\n",
1466 pccb->sense_buf[2], pccb->sense_buf[12],
1467 pccb->sense_buf[13]);
1468 if (dev_desc->removable == 1)
1469 dev_desc->type = perq;
1470 return 0;
1471 }
1472 pccb->pdata = (unsigned char *)cap;
1473 memset(pccb->pdata, 0, 8);
1474 if (usb_read_capacity(pccb, ss) != 0) {
1475 printf("READ_CAP ERROR\n");
1476 cap[0] = 2880;
1477 cap[1] = 0x200;
1478 }
1479 ss->flags &= ~USB_READY;
1480 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]);
1481 #if 0
1482 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1483 cap[0] >>= 16;
1484
1485 cap[0] = cpu_to_be32(cap[0]);
1486 cap[1] = cpu_to_be32(cap[1]);
1487 #endif
1488
1489 capacity = be32_to_cpu(cap[0]) + 1;
1490 blksz = be32_to_cpu(cap[1]);
1491
1492 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz);
1493 dev_desc->lba = capacity;
1494 dev_desc->blksz = blksz;
1495 dev_desc->log2blksz = LOG2(dev_desc->blksz);
1496 dev_desc->type = perq;
1497 debug(" address %d\n", dev_desc->target);
1498
1499 return 1;
1500 }
1501
1502 #ifdef CONFIG_DM_USB
1503
1504 static int usb_mass_storage_probe(struct udevice *dev)
1505 {
1506 struct usb_device *udev = dev_get_parent_priv(dev);
1507 int ret;
1508
1509 usb_disable_asynch(1); /* asynch transfer not allowed */
1510 ret = usb_stor_probe_device(udev);
1511 usb_disable_asynch(0); /* asynch transfer allowed */
1512
1513 return ret;
1514 }
1515
1516 static const struct udevice_id usb_mass_storage_ids[] = {
1517 { .compatible = "usb-mass-storage" },
1518 { }
1519 };
1520
1521 U_BOOT_DRIVER(usb_mass_storage) = {
1522 .name = "usb_mass_storage",
1523 .id = UCLASS_MASS_STORAGE,
1524 .of_match = usb_mass_storage_ids,
1525 .probe = usb_mass_storage_probe,
1526 #ifdef CONFIG_BLK
1527 .platdata_auto_alloc_size = sizeof(struct us_data),
1528 #endif
1529 };
1530
1531 UCLASS_DRIVER(usb_mass_storage) = {
1532 .id = UCLASS_MASS_STORAGE,
1533 .name = "usb_mass_storage",
1534 };
1535
1536 static const struct usb_device_id mass_storage_id_table[] = {
1537 {
1538 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1539 .bInterfaceClass = USB_CLASS_MASS_STORAGE
1540 },
1541 { } /* Terminating entry */
1542 };
1543
1544 U_BOOT_USB_DEVICE(usb_mass_storage, mass_storage_id_table);
1545 #endif
1546
1547 #ifdef CONFIG_BLK
1548 static const struct blk_ops usb_storage_ops = {
1549 .read = usb_stor_read,
1550 .write = usb_stor_write,
1551 };
1552
1553 U_BOOT_DRIVER(usb_storage_blk) = {
1554 .name = "usb_storage_blk",
1555 .id = UCLASS_BLK,
1556 .ops = &usb_storage_ops,
1557 };
1558 #else
1559 U_BOOT_LEGACY_BLK(usb) = {
1560 .if_typename = "usb",
1561 .if_type = IF_TYPE_USB,
1562 .max_devs = USB_MAX_STOR_DEV,
1563 .desc = usb_dev_desc,
1564 };
1565 #endif
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