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