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usb: Correct return value in usb_stor_info()
[people/ms/u-boot.git] / common / usb_storage.c
1 /*
2 * Most of this source has been derived from the Linux USB
3 * project:
4 * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
5 * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org)
6 * (c) 1999 Michael Gee (michael@linuxspecific.com)
7 * (c) 2000 Yggdrasil Computing, Inc.
8 *
9 *
10 * Adapted for U-Boot:
11 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
12 * Driver model conversion:
13 * (C) Copyright 2015 Google, Inc
14 *
15 * For BBB support (C) Copyright 2003
16 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
17 *
18 * BBB support based on /sys/dev/usb/umass.c from
19 * FreeBSD.
20 *
21 * SPDX-License-Identifier: GPL-2.0+
22 */
23
24 /* Note:
25 * Currently only the CBI transport protocoll has been implemented, and it
26 * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
27 * transport protocoll may work as well.
28 */
29 /*
30 * New Note:
31 * Support for USB Mass Storage Devices (BBB) has been added. It has
32 * only been tested with USB memory sticks.
33 */
34
35
36 #include <common.h>
37 #include <command.h>
38 #include <dm.h>
39 #include <errno.h>
40 #include <inttypes.h>
41 #include <mapmem.h>
42 #include <memalign.h>
43 #include <asm/byteorder.h>
44 #include <asm/processor.h>
45 #include <dm/device-internal.h>
46 #include <dm/lists.h>
47
48 #include <part.h>
49 #include <usb.h>
50
51 #undef BBB_COMDAT_TRACE
52 #undef BBB_XPORT_TRACE
53
54 #include <scsi.h>
55 /* direction table -- this indicates the direction of the data
56 * transfer for each command code -- a 1 indicates input
57 */
58 static const unsigned char us_direction[256/8] = {
59 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
60 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
61 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
62 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
63 };
64 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
65
66 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN)));
67 static __u32 CBWTag;
68
69 static int usb_max_devs; /* number of highest available usb device */
70
71 #ifndef CONFIG_BLK
72 static struct blk_desc usb_dev_desc[USB_MAX_STOR_DEV];
73 #endif
74
75 struct us_data;
76 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data);
77 typedef int (*trans_reset)(struct us_data *data);
78
79 struct us_data {
80 struct usb_device *pusb_dev; /* this usb_device */
81
82 unsigned int flags; /* from filter initially */
83 # define USB_READY (1 << 0)
84 unsigned char ifnum; /* interface number */
85 unsigned char ep_in; /* in endpoint */
86 unsigned char ep_out; /* out ....... */
87 unsigned char ep_int; /* interrupt . */
88 unsigned char subclass; /* as in overview */
89 unsigned char protocol; /* .............. */
90 unsigned char attention_done; /* force attn on first cmd */
91 unsigned short ip_data; /* interrupt data */
92 int action; /* what to do */
93 int ip_wanted; /* needed */
94 int *irq_handle; /* for USB int requests */
95 unsigned int irqpipe; /* pipe for release_irq */
96 unsigned char irqmaxp; /* max packed for irq Pipe */
97 unsigned char irqinterval; /* Intervall for IRQ Pipe */
98 ccb *srb; /* current srb */
99 trans_reset transport_reset; /* reset routine */
100 trans_cmnd transport; /* transport routine */
101 };
102
103 #ifdef CONFIG_USB_EHCI
104 /*
105 * The U-Boot EHCI driver can handle any transfer length as long as there is
106 * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are
107 * limited to 65535 blocks.
108 */
109 #define USB_MAX_XFER_BLK 65535
110 #else
111 #define USB_MAX_XFER_BLK 20
112 #endif
113
114 #ifndef CONFIG_BLK
115 static struct us_data usb_stor[USB_MAX_STOR_DEV];
116 #endif
117
118 #define USB_STOR_TRANSPORT_GOOD 0
119 #define USB_STOR_TRANSPORT_FAILED -1
120 #define USB_STOR_TRANSPORT_ERROR -2
121
122 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
123 struct blk_desc *dev_desc);
124 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
125 struct us_data *ss);
126 #ifdef CONFIG_BLK
127 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr,
128 lbaint_t blkcnt, void *buffer);
129 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr,
130 lbaint_t blkcnt, const void *buffer);
131 #else
132 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
133 lbaint_t blkcnt, void *buffer);
134 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr,
135 lbaint_t blkcnt, const void *buffer);
136 #endif
137 void uhci_show_temp_int_td(void);
138
139 #ifdef CONFIG_PARTITIONS
140 struct blk_desc *usb_stor_get_dev(int index)
141 {
142 #ifdef CONFIG_BLK
143 struct udevice *dev;
144 int ret;
145
146 ret = blk_get_device(IF_TYPE_USB, index, &dev);
147 if (ret)
148 return NULL;
149 return dev_get_uclass_platdata(dev);
150 #else
151 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
152 #endif
153 }
154 #endif
155
156 static void usb_show_progress(void)
157 {
158 debug(".");
159 }
160
161 /*******************************************************************************
162 * show info on storage devices; 'usb start/init' must be invoked earlier
163 * as we only retrieve structures populated during devices initialization
164 */
165 int usb_stor_info(void)
166 {
167 int count = 0;
168 #ifdef CONFIG_BLK
169 struct udevice *dev;
170
171 for (blk_first_device(IF_TYPE_USB, &dev);
172 dev;
173 blk_next_device(&dev)) {
174 struct blk_desc *desc = dev_get_uclass_platdata(dev);
175
176 printf(" Device %d: ", desc->devnum);
177 dev_print(desc);
178 count++;
179 }
180 #else
181 int i;
182
183 if (usb_max_devs > 0) {
184 for (i = 0; i < usb_max_devs; i++) {
185 printf(" Device %d: ", i);
186 dev_print(&usb_dev_desc[i]);
187 }
188 return 0;
189 }
190 #endif
191 if (!count) {
192 printf("No storage devices, perhaps not 'usb start'ed..?\n");
193 return 1;
194 }
195
196 return 0;
197 }
198
199 static unsigned int usb_get_max_lun(struct us_data *us)
200 {
201 int len;
202 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
203 len = usb_control_msg(us->pusb_dev,
204 usb_rcvctrlpipe(us->pusb_dev, 0),
205 US_BBB_GET_MAX_LUN,
206 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
207 0, us->ifnum,
208 result, sizeof(char),
209 USB_CNTL_TIMEOUT * 5);
210 debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result);
211 return (len > 0) ? *result : 0;
212 }
213
214 static int usb_stor_probe_device(struct usb_device *udev)
215 {
216 int lun, max_lun;
217
218 #ifdef CONFIG_BLK
219 struct us_data *data;
220 char dev_name[30], *str;
221 int ret;
222 #else
223 int start;
224
225 if (udev == NULL)
226 return -ENOENT; /* no more devices available */
227 #endif
228
229 debug("\n\nProbing for storage\n");
230 #ifdef CONFIG_BLK
231 /*
232 * We store the us_data in the mass storage device's platdata. It
233 * is shared by all LUNs (block devices) attached to this mass storage
234 * device.
235 */
236 data = dev_get_platdata(udev->dev);
237 if (!usb_storage_probe(udev, 0, data))
238 return 0;
239 max_lun = usb_get_max_lun(data);
240 for (lun = 0; lun <= max_lun; lun++) {
241 struct blk_desc *blkdev;
242 struct udevice *dev;
243
244 snprintf(dev_name, sizeof(dev_name), "%s.lun%d",
245 udev->dev->name, lun);
246 str = strdup(dev_name);
247 if (!str)
248 return -ENOMEM;
249 ret = blk_create_device(udev->dev, "usb_storage_blk", str,
250 IF_TYPE_USB, usb_max_devs, 512, 0, &dev);
251 if (ret) {
252 debug("Cannot bind driver\n");
253 return ret;
254 }
255
256 blkdev = dev_get_uclass_platdata(dev);
257 blkdev->target = 0xff;
258 blkdev->lun = lun;
259
260 ret = usb_stor_get_info(udev, data, blkdev);
261 if (ret == 1)
262 ret = blk_prepare_device(dev);
263 if (!ret) {
264 usb_max_devs++;
265 debug("%s: Found device %p\n", __func__, udev);
266 } else {
267 debug("usb_stor_get_info: Invalid device\n");
268 ret = device_unbind(dev);
269 if (ret)
270 return ret;
271 }
272 }
273 #else
274 /* We don't have space to even probe if we hit the maximum */
275 if (usb_max_devs == USB_MAX_STOR_DEV) {
276 printf("max USB Storage Device reached: %d stopping\n",
277 usb_max_devs);
278 return -ENOSPC;
279 }
280
281 if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs]))
282 return 0;
283
284 /*
285 * OK, it's a storage device. Iterate over its LUNs and populate
286 * usb_dev_desc'
287 */
288 start = usb_max_devs;
289
290 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
291 for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
292 lun++) {
293 struct blk_desc *blkdev;
294
295 blkdev = &usb_dev_desc[usb_max_devs];
296 memset(blkdev, '\0', sizeof(struct blk_desc));
297 blkdev->if_type = IF_TYPE_USB;
298 blkdev->devnum = usb_max_devs;
299 blkdev->part_type = PART_TYPE_UNKNOWN;
300 blkdev->target = 0xff;
301 blkdev->type = DEV_TYPE_UNKNOWN;
302 blkdev->block_read = usb_stor_read;
303 blkdev->block_write = usb_stor_write;
304 blkdev->lun = lun;
305 blkdev->priv = udev;
306
307 if (usb_stor_get_info(udev, &usb_stor[start],
308 &usb_dev_desc[usb_max_devs]) == 1) {
309 debug("partype: %d\n", blkdev->part_type);
310 part_init(blkdev);
311 debug("partype: %d\n", blkdev->part_type);
312 usb_max_devs++;
313 debug("%s: Found device %p\n", __func__, udev);
314 }
315 }
316 #endif
317
318 return 0;
319 }
320
321 void usb_stor_reset(void)
322 {
323 usb_max_devs = 0;
324 }
325
326 #ifndef CONFIG_DM_USB
327 /*******************************************************************************
328 * scan the usb and reports device info
329 * to the user if mode = 1
330 * returns current device or -1 if no
331 */
332 int usb_stor_scan(int mode)
333 {
334 unsigned char i;
335
336 if (mode == 1)
337 printf(" scanning usb for storage devices... ");
338
339 usb_disable_asynch(1); /* asynch transfer not allowed */
340
341 usb_stor_reset();
342 for (i = 0; i < USB_MAX_DEVICE; i++) {
343 struct usb_device *dev;
344
345 dev = usb_get_dev_index(i); /* get device */
346 debug("i=%d\n", i);
347 if (usb_stor_probe_device(dev))
348 break;
349 } /* for */
350
351 usb_disable_asynch(0); /* asynch transfer allowed */
352 printf("%d Storage Device(s) found\n", usb_max_devs);
353 if (usb_max_devs > 0)
354 return 0;
355 return -1;
356 }
357 #endif
358
359 static int usb_stor_irq(struct usb_device *dev)
360 {
361 struct us_data *us;
362 us = (struct us_data *)dev->privptr;
363
364 if (us->ip_wanted)
365 us->ip_wanted = 0;
366 return 0;
367 }
368
369
370 #ifdef DEBUG
371
372 static void usb_show_srb(ccb *pccb)
373 {
374 int i;
375 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
376 for (i = 0; i < 12; i++)
377 printf("%02X ", pccb->cmd[i]);
378 printf("\n");
379 }
380
381 static void display_int_status(unsigned long tmp)
382 {
383 printf("Status: %s %s %s %s %s %s %s\n",
384 (tmp & USB_ST_ACTIVE) ? "Active" : "",
385 (tmp & USB_ST_STALLED) ? "Stalled" : "",
386 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
387 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
388 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
389 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
390 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
391 }
392 #endif
393 /***********************************************************************
394 * Data transfer routines
395 ***********************************************************************/
396
397 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
398 {
399 int max_size;
400 int this_xfer;
401 int result;
402 int partial;
403 int maxtry;
404 int stat;
405
406 /* determine the maximum packet size for these transfers */
407 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
408
409 /* while we have data left to transfer */
410 while (length) {
411
412 /* calculate how long this will be -- maximum or a remainder */
413 this_xfer = length > max_size ? max_size : length;
414 length -= this_xfer;
415
416 /* setup the retry counter */
417 maxtry = 10;
418
419 /* set up the transfer loop */
420 do {
421 /* transfer the data */
422 debug("Bulk xfer 0x%lx(%d) try #%d\n",
423 (ulong)map_to_sysmem(buf), this_xfer,
424 11 - maxtry);
425 result = usb_bulk_msg(us->pusb_dev, pipe, buf,
426 this_xfer, &partial,
427 USB_CNTL_TIMEOUT * 5);
428 debug("bulk_msg returned %d xferred %d/%d\n",
429 result, partial, this_xfer);
430 if (us->pusb_dev->status != 0) {
431 /* if we stall, we need to clear it before
432 * we go on
433 */
434 #ifdef DEBUG
435 display_int_status(us->pusb_dev->status);
436 #endif
437 if (us->pusb_dev->status & USB_ST_STALLED) {
438 debug("stalled ->clearing endpoint" \
439 "halt for pipe 0x%x\n", pipe);
440 stat = us->pusb_dev->status;
441 usb_clear_halt(us->pusb_dev, pipe);
442 us->pusb_dev->status = stat;
443 if (this_xfer == partial) {
444 debug("bulk transferred" \
445 "with error %lX," \
446 " but data ok\n",
447 us->pusb_dev->status);
448 return 0;
449 }
450 else
451 return result;
452 }
453 if (us->pusb_dev->status & USB_ST_NAK_REC) {
454 debug("Device NAKed bulk_msg\n");
455 return result;
456 }
457 debug("bulk transferred with error");
458 if (this_xfer == partial) {
459 debug(" %ld, but data ok\n",
460 us->pusb_dev->status);
461 return 0;
462 }
463 /* if our try counter reaches 0, bail out */
464 debug(" %ld, data %d\n",
465 us->pusb_dev->status, partial);
466 if (!maxtry--)
467 return result;
468 }
469 /* update to show what data was transferred */
470 this_xfer -= partial;
471 buf += partial;
472 /* continue until this transfer is done */
473 } while (this_xfer);
474 }
475
476 /* if we get here, we're done and successful */
477 return 0;
478 }
479
480 static int usb_stor_BBB_reset(struct us_data *us)
481 {
482 int result;
483 unsigned int pipe;
484
485 /*
486 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
487 *
488 * For Reset Recovery the host shall issue in the following order:
489 * a) a Bulk-Only Mass Storage Reset
490 * b) a Clear Feature HALT to the Bulk-In endpoint
491 * c) a Clear Feature HALT to the Bulk-Out endpoint
492 *
493 * This is done in 3 steps.
494 *
495 * If the reset doesn't succeed, the device should be port reset.
496 *
497 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
498 */
499 debug("BBB_reset\n");
500 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
501 US_BBB_RESET,
502 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
503 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
504
505 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
506 debug("RESET:stall\n");
507 return -1;
508 }
509
510 /* long wait for reset */
511 mdelay(150);
512 debug("BBB_reset result %d: status %lX reset\n",
513 result, us->pusb_dev->status);
514 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
515 result = usb_clear_halt(us->pusb_dev, pipe);
516 /* long wait for reset */
517 mdelay(150);
518 debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
519 result, us->pusb_dev->status);
520 /* long wait for reset */
521 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
522 result = usb_clear_halt(us->pusb_dev, pipe);
523 mdelay(150);
524 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
525 result, us->pusb_dev->status);
526 debug("BBB_reset done\n");
527 return 0;
528 }
529
530 /* FIXME: this reset function doesn't really reset the port, and it
531 * should. Actually it should probably do what it's doing here, and
532 * reset the port physically
533 */
534 static int usb_stor_CB_reset(struct us_data *us)
535 {
536 unsigned char cmd[12];
537 int result;
538
539 debug("CB_reset\n");
540 memset(cmd, 0xff, sizeof(cmd));
541 cmd[0] = SCSI_SEND_DIAG;
542 cmd[1] = 4;
543 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
544 US_CBI_ADSC,
545 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
546 0, us->ifnum, cmd, sizeof(cmd),
547 USB_CNTL_TIMEOUT * 5);
548
549 /* long wait for reset */
550 mdelay(1500);
551 debug("CB_reset result %d: status %lX clearing endpoint halt\n",
552 result, us->pusb_dev->status);
553 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
554 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
555
556 debug("CB_reset done\n");
557 return 0;
558 }
559
560 /*
561 * Set up the command for a BBB device. Note that the actual SCSI
562 * command is copied into cbw.CBWCDB.
563 */
564 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
565 {
566 int result;
567 int actlen;
568 int dir_in;
569 unsigned int pipe;
570 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1);
571
572 dir_in = US_DIRECTION(srb->cmd[0]);
573
574 #ifdef BBB_COMDAT_TRACE
575 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
576 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
577 srb->pdata);
578 if (srb->cmdlen) {
579 for (result = 0; result < srb->cmdlen; result++)
580 printf("cmd[%d] %#x ", result, srb->cmd[result]);
581 printf("\n");
582 }
583 #endif
584 /* sanity checks */
585 if (!(srb->cmdlen <= CBWCDBLENGTH)) {
586 debug("usb_stor_BBB_comdat:cmdlen too large\n");
587 return -1;
588 }
589
590 /* always OUT to the ep */
591 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
592
593 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
594 cbw->dCBWTag = cpu_to_le32(CBWTag++);
595 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
596 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
597 cbw->bCBWLUN = srb->lun;
598 cbw->bCDBLength = srb->cmdlen;
599 /* copy the command data into the CBW command data buffer */
600 /* DST SRC LEN!!! */
601
602 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
603 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
604 &actlen, USB_CNTL_TIMEOUT * 5);
605 if (result < 0)
606 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
607 return result;
608 }
609
610 /* FIXME: we also need a CBI_command which sets up the completion
611 * interrupt, and waits for it
612 */
613 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
614 {
615 int result = 0;
616 int dir_in, retry;
617 unsigned int pipe;
618 unsigned long status;
619
620 retry = 5;
621 dir_in = US_DIRECTION(srb->cmd[0]);
622
623 if (dir_in)
624 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
625 else
626 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
627
628 while (retry--) {
629 debug("CBI gets a command: Try %d\n", 5 - retry);
630 #ifdef DEBUG
631 usb_show_srb(srb);
632 #endif
633 /* let's send the command via the control pipe */
634 result = usb_control_msg(us->pusb_dev,
635 usb_sndctrlpipe(us->pusb_dev , 0),
636 US_CBI_ADSC,
637 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
638 0, us->ifnum,
639 srb->cmd, srb->cmdlen,
640 USB_CNTL_TIMEOUT * 5);
641 debug("CB_transport: control msg returned %d, status %lX\n",
642 result, us->pusb_dev->status);
643 /* check the return code for the command */
644 if (result < 0) {
645 if (us->pusb_dev->status & USB_ST_STALLED) {
646 status = us->pusb_dev->status;
647 debug(" stall during command found," \
648 " clear pipe\n");
649 usb_clear_halt(us->pusb_dev,
650 usb_sndctrlpipe(us->pusb_dev, 0));
651 us->pusb_dev->status = status;
652 }
653 debug(" error during command %02X" \
654 " Stat = %lX\n", srb->cmd[0],
655 us->pusb_dev->status);
656 return result;
657 }
658 /* transfer the data payload for this command, if one exists*/
659
660 debug("CB_transport: control msg returned %d," \
661 " direction is %s to go 0x%lx\n", result,
662 dir_in ? "IN" : "OUT", srb->datalen);
663 if (srb->datalen) {
664 result = us_one_transfer(us, pipe, (char *)srb->pdata,
665 srb->datalen);
666 debug("CBI attempted to transfer data," \
667 " result is %d status %lX, len %d\n",
668 result, us->pusb_dev->status,
669 us->pusb_dev->act_len);
670 if (!(us->pusb_dev->status & USB_ST_NAK_REC))
671 break;
672 } /* if (srb->datalen) */
673 else
674 break;
675 }
676 /* return result */
677
678 return result;
679 }
680
681
682 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
683 {
684 int timeout;
685
686 us->ip_wanted = 1;
687 submit_int_msg(us->pusb_dev, us->irqpipe,
688 (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
689 timeout = 1000;
690 while (timeout--) {
691 if (us->ip_wanted == 0)
692 break;
693 mdelay(10);
694 }
695 if (us->ip_wanted) {
696 printf(" Did not get interrupt on CBI\n");
697 us->ip_wanted = 0;
698 return USB_STOR_TRANSPORT_ERROR;
699 }
700 debug("Got interrupt data 0x%x, transferred %d status 0x%lX\n",
701 us->ip_data, us->pusb_dev->irq_act_len,
702 us->pusb_dev->irq_status);
703 /* UFI gives us ASC and ASCQ, like a request sense */
704 if (us->subclass == US_SC_UFI) {
705 if (srb->cmd[0] == SCSI_REQ_SENSE ||
706 srb->cmd[0] == SCSI_INQUIRY)
707 return USB_STOR_TRANSPORT_GOOD; /* Good */
708 else if (us->ip_data)
709 return USB_STOR_TRANSPORT_FAILED;
710 else
711 return USB_STOR_TRANSPORT_GOOD;
712 }
713 /* otherwise, we interpret the data normally */
714 switch (us->ip_data) {
715 case 0x0001:
716 return USB_STOR_TRANSPORT_GOOD;
717 case 0x0002:
718 return USB_STOR_TRANSPORT_FAILED;
719 default:
720 return USB_STOR_TRANSPORT_ERROR;
721 } /* switch */
722 return USB_STOR_TRANSPORT_ERROR;
723 }
724
725 #define USB_TRANSPORT_UNKNOWN_RETRY 5
726 #define USB_TRANSPORT_NOT_READY_RETRY 10
727
728 /* clear a stall on an endpoint - special for BBB devices */
729 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
730 {
731 int result;
732
733 /* ENDPOINT_HALT = 0, so set value to 0 */
734 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
735 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
736 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
737 return result;
738 }
739
740 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
741 {
742 int result, retry;
743 int dir_in;
744 int actlen, data_actlen;
745 unsigned int pipe, pipein, pipeout;
746 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1);
747 #ifdef BBB_XPORT_TRACE
748 unsigned char *ptr;
749 int index;
750 #endif
751
752 dir_in = US_DIRECTION(srb->cmd[0]);
753
754 /* COMMAND phase */
755 debug("COMMAND phase\n");
756 result = usb_stor_BBB_comdat(srb, us);
757 if (result < 0) {
758 debug("failed to send CBW status %ld\n",
759 us->pusb_dev->status);
760 usb_stor_BBB_reset(us);
761 return USB_STOR_TRANSPORT_FAILED;
762 }
763 if (!(us->flags & USB_READY))
764 mdelay(5);
765 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
766 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
767 /* DATA phase + error handling */
768 data_actlen = 0;
769 /* no data, go immediately to the STATUS phase */
770 if (srb->datalen == 0)
771 goto st;
772 debug("DATA phase\n");
773 if (dir_in)
774 pipe = pipein;
775 else
776 pipe = pipeout;
777
778 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
779 &data_actlen, USB_CNTL_TIMEOUT * 5);
780 /* special handling of STALL in DATA phase */
781 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
782 debug("DATA:stall\n");
783 /* clear the STALL on the endpoint */
784 result = usb_stor_BBB_clear_endpt_stall(us,
785 dir_in ? us->ep_in : us->ep_out);
786 if (result >= 0)
787 /* continue on to STATUS phase */
788 goto st;
789 }
790 if (result < 0) {
791 debug("usb_bulk_msg error status %ld\n",
792 us->pusb_dev->status);
793 usb_stor_BBB_reset(us);
794 return USB_STOR_TRANSPORT_FAILED;
795 }
796 #ifdef BBB_XPORT_TRACE
797 for (index = 0; index < data_actlen; index++)
798 printf("pdata[%d] %#x ", index, srb->pdata[index]);
799 printf("\n");
800 #endif
801 /* STATUS phase + error handling */
802 st:
803 retry = 0;
804 again:
805 debug("STATUS phase\n");
806 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
807 &actlen, USB_CNTL_TIMEOUT*5);
808
809 /* special handling of STALL in STATUS phase */
810 if ((result < 0) && (retry < 1) &&
811 (us->pusb_dev->status & USB_ST_STALLED)) {
812 debug("STATUS:stall\n");
813 /* clear the STALL on the endpoint */
814 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
815 if (result >= 0 && (retry++ < 1))
816 /* do a retry */
817 goto again;
818 }
819 if (result < 0) {
820 debug("usb_bulk_msg error status %ld\n",
821 us->pusb_dev->status);
822 usb_stor_BBB_reset(us);
823 return USB_STOR_TRANSPORT_FAILED;
824 }
825 #ifdef BBB_XPORT_TRACE
826 ptr = (unsigned char *)csw;
827 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
828 printf("ptr[%d] %#x ", index, ptr[index]);
829 printf("\n");
830 #endif
831 /* misuse pipe to get the residue */
832 pipe = le32_to_cpu(csw->dCSWDataResidue);
833 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
834 pipe = srb->datalen - data_actlen;
835 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
836 debug("!CSWSIGNATURE\n");
837 usb_stor_BBB_reset(us);
838 return USB_STOR_TRANSPORT_FAILED;
839 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
840 debug("!Tag\n");
841 usb_stor_BBB_reset(us);
842 return USB_STOR_TRANSPORT_FAILED;
843 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
844 debug(">PHASE\n");
845 usb_stor_BBB_reset(us);
846 return USB_STOR_TRANSPORT_FAILED;
847 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
848 debug("=PHASE\n");
849 usb_stor_BBB_reset(us);
850 return USB_STOR_TRANSPORT_FAILED;
851 } else if (data_actlen > srb->datalen) {
852 debug("transferred %dB instead of %ldB\n",
853 data_actlen, srb->datalen);
854 return USB_STOR_TRANSPORT_FAILED;
855 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
856 debug("FAILED\n");
857 return USB_STOR_TRANSPORT_FAILED;
858 }
859
860 return result;
861 }
862
863 static int usb_stor_CB_transport(ccb *srb, struct us_data *us)
864 {
865 int result, status;
866 ccb *psrb;
867 ccb reqsrb;
868 int retry, notready;
869
870 psrb = &reqsrb;
871 status = USB_STOR_TRANSPORT_GOOD;
872 retry = 0;
873 notready = 0;
874 /* issue the command */
875 do_retry:
876 result = usb_stor_CB_comdat(srb, us);
877 debug("command / Data returned %d, status %lX\n",
878 result, us->pusb_dev->status);
879 /* if this is an CBI Protocol, get IRQ */
880 if (us->protocol == US_PR_CBI) {
881 status = usb_stor_CBI_get_status(srb, us);
882 /* if the status is error, report it */
883 if (status == USB_STOR_TRANSPORT_ERROR) {
884 debug(" USB CBI Command Error\n");
885 return status;
886 }
887 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
888 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
889 if (!us->ip_data) {
890 /* if the status is good, report it */
891 if (status == USB_STOR_TRANSPORT_GOOD) {
892 debug(" USB CBI Command Good\n");
893 return status;
894 }
895 }
896 }
897 /* do we have to issue an auto request? */
898 /* HERE we have to check the result */
899 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
900 debug("ERROR %lX\n", us->pusb_dev->status);
901 us->transport_reset(us);
902 return USB_STOR_TRANSPORT_ERROR;
903 }
904 if ((us->protocol == US_PR_CBI) &&
905 ((srb->cmd[0] == SCSI_REQ_SENSE) ||
906 (srb->cmd[0] == SCSI_INQUIRY))) {
907 /* do not issue an autorequest after request sense */
908 debug("No auto request and good\n");
909 return USB_STOR_TRANSPORT_GOOD;
910 }
911 /* issue an request_sense */
912 memset(&psrb->cmd[0], 0, 12);
913 psrb->cmd[0] = SCSI_REQ_SENSE;
914 psrb->cmd[1] = srb->lun << 5;
915 psrb->cmd[4] = 18;
916 psrb->datalen = 18;
917 psrb->pdata = &srb->sense_buf[0];
918 psrb->cmdlen = 12;
919 /* issue the command */
920 result = usb_stor_CB_comdat(psrb, us);
921 debug("auto request returned %d\n", result);
922 /* if this is an CBI Protocol, get IRQ */
923 if (us->protocol == US_PR_CBI)
924 status = usb_stor_CBI_get_status(psrb, us);
925
926 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
927 debug(" AUTO REQUEST ERROR %ld\n",
928 us->pusb_dev->status);
929 return USB_STOR_TRANSPORT_ERROR;
930 }
931 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
932 srb->sense_buf[0], srb->sense_buf[2],
933 srb->sense_buf[12], srb->sense_buf[13]);
934 /* Check the auto request result */
935 if ((srb->sense_buf[2] == 0) &&
936 (srb->sense_buf[12] == 0) &&
937 (srb->sense_buf[13] == 0)) {
938 /* ok, no sense */
939 return USB_STOR_TRANSPORT_GOOD;
940 }
941
942 /* Check the auto request result */
943 switch (srb->sense_buf[2]) {
944 case 0x01:
945 /* Recovered Error */
946 return USB_STOR_TRANSPORT_GOOD;
947 break;
948 case 0x02:
949 /* Not Ready */
950 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
951 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
952 " 0x%02X (NOT READY)\n", srb->cmd[0],
953 srb->sense_buf[0], srb->sense_buf[2],
954 srb->sense_buf[12], srb->sense_buf[13]);
955 return USB_STOR_TRANSPORT_FAILED;
956 } else {
957 mdelay(100);
958 goto do_retry;
959 }
960 break;
961 default:
962 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
963 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
964 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
965 srb->sense_buf[2], srb->sense_buf[12],
966 srb->sense_buf[13]);
967 return USB_STOR_TRANSPORT_FAILED;
968 } else
969 goto do_retry;
970 break;
971 }
972 return USB_STOR_TRANSPORT_FAILED;
973 }
974
975
976 static int usb_inquiry(ccb *srb, struct us_data *ss)
977 {
978 int retry, i;
979 retry = 5;
980 do {
981 memset(&srb->cmd[0], 0, 12);
982 srb->cmd[0] = SCSI_INQUIRY;
983 srb->cmd[1] = srb->lun << 5;
984 srb->cmd[4] = 36;
985 srb->datalen = 36;
986 srb->cmdlen = 12;
987 i = ss->transport(srb, ss);
988 debug("inquiry returns %d\n", i);
989 if (i == 0)
990 break;
991 } while (--retry);
992
993 if (!retry) {
994 printf("error in inquiry\n");
995 return -1;
996 }
997 return 0;
998 }
999
1000 static int usb_request_sense(ccb *srb, struct us_data *ss)
1001 {
1002 char *ptr;
1003
1004 ptr = (char *)srb->pdata;
1005 memset(&srb->cmd[0], 0, 12);
1006 srb->cmd[0] = SCSI_REQ_SENSE;
1007 srb->cmd[1] = srb->lun << 5;
1008 srb->cmd[4] = 18;
1009 srb->datalen = 18;
1010 srb->pdata = &srb->sense_buf[0];
1011 srb->cmdlen = 12;
1012 ss->transport(srb, ss);
1013 debug("Request Sense returned %02X %02X %02X\n",
1014 srb->sense_buf[2], srb->sense_buf[12],
1015 srb->sense_buf[13]);
1016 srb->pdata = (uchar *)ptr;
1017 return 0;
1018 }
1019
1020 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
1021 {
1022 int retries = 10;
1023
1024 do {
1025 memset(&srb->cmd[0], 0, 12);
1026 srb->cmd[0] = SCSI_TST_U_RDY;
1027 srb->cmd[1] = srb->lun << 5;
1028 srb->datalen = 0;
1029 srb->cmdlen = 12;
1030 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) {
1031 ss->flags |= USB_READY;
1032 return 0;
1033 }
1034 usb_request_sense(srb, ss);
1035 /*
1036 * Check the Key Code Qualifier, if it matches
1037 * "Not Ready - medium not present"
1038 * (the sense Key equals 0x2 and the ASC is 0x3a)
1039 * return immediately as the medium being absent won't change
1040 * unless there is a user action.
1041 */
1042 if ((srb->sense_buf[2] == 0x02) &&
1043 (srb->sense_buf[12] == 0x3a))
1044 return -1;
1045 mdelay(100);
1046 } while (retries--);
1047
1048 return -1;
1049 }
1050
1051 static int usb_read_capacity(ccb *srb, struct us_data *ss)
1052 {
1053 int retry;
1054 /* XXX retries */
1055 retry = 3;
1056 do {
1057 memset(&srb->cmd[0], 0, 12);
1058 srb->cmd[0] = SCSI_RD_CAPAC;
1059 srb->cmd[1] = srb->lun << 5;
1060 srb->datalen = 8;
1061 srb->cmdlen = 12;
1062 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
1063 return 0;
1064 } while (retry--);
1065
1066 return -1;
1067 }
1068
1069 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
1070 unsigned short blocks)
1071 {
1072 memset(&srb->cmd[0], 0, 12);
1073 srb->cmd[0] = SCSI_READ10;
1074 srb->cmd[1] = srb->lun << 5;
1075 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1076 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1077 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1078 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1079 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1080 srb->cmd[8] = (unsigned char) blocks & 0xff;
1081 srb->cmdlen = 12;
1082 debug("read10: start %lx blocks %x\n", start, blocks);
1083 return ss->transport(srb, ss);
1084 }
1085
1086 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
1087 unsigned short blocks)
1088 {
1089 memset(&srb->cmd[0], 0, 12);
1090 srb->cmd[0] = SCSI_WRITE10;
1091 srb->cmd[1] = srb->lun << 5;
1092 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1093 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1094 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1095 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1096 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1097 srb->cmd[8] = (unsigned char) blocks & 0xff;
1098 srb->cmdlen = 12;
1099 debug("write10: start %lx blocks %x\n", start, blocks);
1100 return ss->transport(srb, ss);
1101 }
1102
1103
1104 #ifdef CONFIG_USB_BIN_FIXUP
1105 /*
1106 * Some USB storage devices queried for SCSI identification data respond with
1107 * binary strings, which if output to the console freeze the terminal. The
1108 * workaround is to modify the vendor and product strings read from such
1109 * device with proper values (as reported by 'usb info').
1110 *
1111 * Vendor and product length limits are taken from the definition of
1112 * struct blk_desc in include/part.h.
1113 */
1114 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1115 unsigned char vendor[],
1116 unsigned char product[]) {
1117 const unsigned char max_vendor_len = 40;
1118 const unsigned char max_product_len = 20;
1119 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1120 strncpy((char *)vendor, "SMSC", max_vendor_len);
1121 strncpy((char *)product, "Flash Media Cntrller",
1122 max_product_len);
1123 }
1124 }
1125 #endif /* CONFIG_USB_BIN_FIXUP */
1126
1127 #ifdef CONFIG_BLK
1128 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr,
1129 lbaint_t blkcnt, void *buffer)
1130 #else
1131 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
1132 lbaint_t blkcnt, void *buffer)
1133 #endif
1134 {
1135 lbaint_t start, blks;
1136 uintptr_t buf_addr;
1137 unsigned short smallblks;
1138 struct usb_device *udev;
1139 struct us_data *ss;
1140 int retry;
1141 ccb *srb = &usb_ccb;
1142 #ifdef CONFIG_BLK
1143 struct blk_desc *block_dev;
1144 #endif
1145
1146 if (blkcnt == 0)
1147 return 0;
1148 /* Setup device */
1149 #ifdef CONFIG_BLK
1150 block_dev = dev_get_uclass_platdata(dev);
1151 udev = dev_get_parent_priv(dev_get_parent(dev));
1152 debug("\nusb_read: udev %d\n", block_dev->devnum);
1153 #else
1154 debug("\nusb_read: udev %d\n", block_dev->devnum);
1155 udev = usb_dev_desc[block_dev->devnum].priv;
1156 if (!udev) {
1157 debug("%s: No device\n", __func__);
1158 return 0;
1159 }
1160 #endif
1161 ss = (struct us_data *)udev->privptr;
1162
1163 usb_disable_asynch(1); /* asynch transfer not allowed */
1164 srb->lun = block_dev->lun;
1165 buf_addr = (uintptr_t)buffer;
1166 start = blknr;
1167 blks = blkcnt;
1168
1169 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF " buffer %"
1170 PRIxPTR "\n", block_dev->devnum, start, blks, buf_addr);
1171
1172 do {
1173 /* XXX need some comment here */
1174 retry = 2;
1175 srb->pdata = (unsigned char *)buf_addr;
1176 if (blks > USB_MAX_XFER_BLK)
1177 smallblks = USB_MAX_XFER_BLK;
1178 else
1179 smallblks = (unsigned short) blks;
1180 retry_it:
1181 if (smallblks == USB_MAX_XFER_BLK)
1182 usb_show_progress();
1183 srb->datalen = block_dev->blksz * smallblks;
1184 srb->pdata = (unsigned char *)buf_addr;
1185 if (usb_read_10(srb, ss, start, smallblks)) {
1186 debug("Read ERROR\n");
1187 usb_request_sense(srb, ss);
1188 if (retry--)
1189 goto retry_it;
1190 blkcnt -= blks;
1191 break;
1192 }
1193 start += smallblks;
1194 blks -= smallblks;
1195 buf_addr += srb->datalen;
1196 } while (blks != 0);
1197 ss->flags &= ~USB_READY;
1198
1199 debug("usb_read: end startblk " LBAF
1200 ", blccnt %x buffer %" PRIxPTR "\n",
1201 start, smallblks, buf_addr);
1202
1203 usb_disable_asynch(0); /* asynch transfer allowed */
1204 if (blkcnt >= USB_MAX_XFER_BLK)
1205 debug("\n");
1206 return blkcnt;
1207 }
1208
1209 #ifdef CONFIG_BLK
1210 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr,
1211 lbaint_t blkcnt, const void *buffer)
1212 #else
1213 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr,
1214 lbaint_t blkcnt, const void *buffer)
1215 #endif
1216 {
1217 lbaint_t start, blks;
1218 uintptr_t buf_addr;
1219 unsigned short smallblks;
1220 struct usb_device *udev;
1221 struct us_data *ss;
1222 int retry;
1223 ccb *srb = &usb_ccb;
1224 #ifdef CONFIG_BLK
1225 struct blk_desc *block_dev;
1226 #endif
1227
1228 if (blkcnt == 0)
1229 return 0;
1230
1231 /* Setup device */
1232 #ifdef CONFIG_BLK
1233 block_dev = dev_get_uclass_platdata(dev);
1234 udev = dev_get_parent_priv(dev_get_parent(dev));
1235 debug("\nusb_read: udev %d\n", block_dev->devnum);
1236 #else
1237 debug("\nusb_read: udev %d\n", block_dev->devnum);
1238 udev = usb_dev_desc[block_dev->devnum].priv;
1239 if (!udev) {
1240 debug("%s: No device\n", __func__);
1241 return 0;
1242 }
1243 #endif
1244 ss = (struct us_data *)udev->privptr;
1245
1246 usb_disable_asynch(1); /* asynch transfer not allowed */
1247
1248 srb->lun = block_dev->lun;
1249 buf_addr = (uintptr_t)buffer;
1250 start = blknr;
1251 blks = blkcnt;
1252
1253 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF " buffer %"
1254 PRIxPTR "\n", block_dev->devnum, start, blks, buf_addr);
1255
1256 do {
1257 /* If write fails retry for max retry count else
1258 * return with number of blocks written successfully.
1259 */
1260 retry = 2;
1261 srb->pdata = (unsigned char *)buf_addr;
1262 if (blks > USB_MAX_XFER_BLK)
1263 smallblks = USB_MAX_XFER_BLK;
1264 else
1265 smallblks = (unsigned short) blks;
1266 retry_it:
1267 if (smallblks == USB_MAX_XFER_BLK)
1268 usb_show_progress();
1269 srb->datalen = block_dev->blksz * smallblks;
1270 srb->pdata = (unsigned char *)buf_addr;
1271 if (usb_write_10(srb, ss, start, smallblks)) {
1272 debug("Write ERROR\n");
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 ss->flags &= ~USB_READY;
1284
1285 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %"
1286 PRIxPTR "\n", start, smallblks, buf_addr);
1287
1288 usb_disable_asynch(0); /* asynch transfer allowed */
1289 if (blkcnt >= USB_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 dev->privptr = (void *)ss;
1411 return 1;
1412 }
1413
1414 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1415 struct blk_desc *dev_desc)
1416 {
1417 unsigned char perq, modi;
1418 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2);
1419 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36);
1420 u32 capacity, blksz;
1421 ccb *pccb = &usb_ccb;
1422
1423 pccb->pdata = usb_stor_buf;
1424
1425 dev_desc->target = dev->devnum;
1426 pccb->lun = dev_desc->lun;
1427 debug(" address %d\n", dev_desc->target);
1428
1429 if (usb_inquiry(pccb, ss)) {
1430 debug("%s: usb_inquiry() failed\n", __func__);
1431 return -1;
1432 }
1433
1434 perq = usb_stor_buf[0];
1435 modi = usb_stor_buf[1];
1436
1437 /*
1438 * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1439 * they would not respond to test_unit_ready .
1440 */
1441 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
1442 debug("%s: unknown/unsupported device\n", __func__);
1443 return 0;
1444 }
1445 if ((modi&0x80) == 0x80) {
1446 /* drive is removable */
1447 dev_desc->removable = 1;
1448 }
1449 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8);
1450 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16);
1451 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4);
1452 dev_desc->vendor[8] = 0;
1453 dev_desc->product[16] = 0;
1454 dev_desc->revision[4] = 0;
1455 #ifdef CONFIG_USB_BIN_FIXUP
1456 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1457 (uchar *)dev_desc->product);
1458 #endif /* CONFIG_USB_BIN_FIXUP */
1459 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1460 usb_stor_buf[3]);
1461 if (usb_test_unit_ready(pccb, ss)) {
1462 printf("Device NOT ready\n"
1463 " Request Sense returned %02X %02X %02X\n",
1464 pccb->sense_buf[2], pccb->sense_buf[12],
1465 pccb->sense_buf[13]);
1466 if (dev_desc->removable == 1) {
1467 dev_desc->type = perq;
1468 return 1;
1469 }
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 #endif
"Das U-Boot" Source Tree