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 struct scsi_cmd usb_ccb __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)(struct scsi_cmd *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 struct scsi_cmd *srb; /* current srb */
99 trans_reset transport_reset; /* reset routine */
100 trans_cmnd transport; /* transport routine */
101 unsigned short max_xfer_blk; /* maximum transfer blocks */
102 };
103
104 #ifndef CONFIG_BLK
105 static struct us_data usb_stor[USB_MAX_STOR_DEV];
106 #endif
107
108 #define USB_STOR_TRANSPORT_GOOD 0
109 #define USB_STOR_TRANSPORT_FAILED -1
110 #define USB_STOR_TRANSPORT_ERROR -2
111
112 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
113 struct blk_desc *dev_desc);
114 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
115 struct us_data *ss);
116 #ifdef CONFIG_BLK
117 static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr,
118 lbaint_t blkcnt, void *buffer);
119 static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr,
120 lbaint_t blkcnt, const void *buffer);
121 #else
122 static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
123 lbaint_t blkcnt, void *buffer);
124 static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr,
125 lbaint_t blkcnt, const void *buffer);
126 #endif
127 void uhci_show_temp_int_td(void);
128
usb_show_progress(void)129 static void usb_show_progress(void)
130 {
131 debug(".");
132 }
133
134 /*******************************************************************************
135 * show info on storage devices; 'usb start/init' must be invoked earlier
136 * as we only retrieve structures populated during devices initialization
137 */
usb_stor_info(void)138 int usb_stor_info(void)
139 {
140 int count = 0;
141 #ifdef CONFIG_BLK
142 struct udevice *dev;
143
144 for (blk_first_device(IF_TYPE_USB, &dev);
145 dev;
146 blk_next_device(&dev)) {
147 struct blk_desc *desc = dev_get_uclass_platdata(dev);
148
149 printf(" Device %d: ", desc->devnum);
150 dev_print(desc);
151 count++;
152 }
153 #else
154 int i;
155
156 if (usb_max_devs > 0) {
157 for (i = 0; i < usb_max_devs; i++) {
158 printf(" Device %d: ", i);
159 dev_print(&usb_dev_desc[i]);
160 }
161 return 0;
162 }
163 #endif
164 if (!count) {
165 printf("No storage devices, perhaps not 'usb start'ed..?\n");
166 return 1;
167 }
168
169 return 0;
170 }
171
usb_get_max_lun(struct us_data * us)172 static unsigned int usb_get_max_lun(struct us_data *us)
173 {
174 int len;
175 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
176 len = usb_control_msg(us->pusb_dev,
177 usb_rcvctrlpipe(us->pusb_dev, 0),
178 US_BBB_GET_MAX_LUN,
179 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
180 0, us->ifnum,
181 result, sizeof(char),
182 USB_CNTL_TIMEOUT * 5);
183 debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result);
184 return (len > 0) ? *result : 0;
185 }
186
usb_stor_probe_device(struct usb_device * udev)187 static int usb_stor_probe_device(struct usb_device *udev)
188 {
189 int lun, max_lun;
190
191 #ifdef CONFIG_BLK
192 struct us_data *data;
193 int ret;
194 #else
195 int start;
196
197 if (udev == NULL)
198 return -ENOENT; /* no more devices available */
199 #endif
200
201 debug("\n\nProbing for storage\n");
202 #ifdef CONFIG_BLK
203 /*
204 * We store the us_data in the mass storage device's platdata. It
205 * is shared by all LUNs (block devices) attached to this mass storage
206 * device.
207 */
208 data = dev_get_platdata(udev->dev);
209 if (!usb_storage_probe(udev, 0, data))
210 return 0;
211 max_lun = usb_get_max_lun(data);
212 for (lun = 0; lun <= max_lun; lun++) {
213 struct blk_desc *blkdev;
214 struct udevice *dev;
215 char str[10];
216
217 snprintf(str, sizeof(str), "lun%d", lun);
218 ret = blk_create_devicef(udev->dev, "usb_storage_blk", str,
219 IF_TYPE_USB, usb_max_devs, 512, 0,
220 &dev);
221 if (ret) {
222 debug("Cannot bind driver\n");
223 return ret;
224 }
225
226 blkdev = dev_get_uclass_platdata(dev);
227 blkdev->target = 0xff;
228 blkdev->lun = lun;
229
230 ret = usb_stor_get_info(udev, data, blkdev);
231 if (ret == 1)
232 ret = blk_prepare_device(dev);
233 if (!ret) {
234 usb_max_devs++;
235 debug("%s: Found device %p\n", __func__, udev);
236 } else {
237 debug("usb_stor_get_info: Invalid device\n");
238 ret = device_unbind(dev);
239 if (ret)
240 return ret;
241 }
242 }
243 #else
244 /* We don't have space to even probe if we hit the maximum */
245 if (usb_max_devs == USB_MAX_STOR_DEV) {
246 printf("max USB Storage Device reached: %d stopping\n",
247 usb_max_devs);
248 return -ENOSPC;
249 }
250
251 if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs]))
252 return 0;
253
254 /*
255 * OK, it's a storage device. Iterate over its LUNs and populate
256 * usb_dev_desc'
257 */
258 start = usb_max_devs;
259
260 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
261 for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
262 lun++) {
263 struct blk_desc *blkdev;
264
265 blkdev = &usb_dev_desc[usb_max_devs];
266 memset(blkdev, '\0', sizeof(struct blk_desc));
267 blkdev->if_type = IF_TYPE_USB;
268 blkdev->devnum = usb_max_devs;
269 blkdev->part_type = PART_TYPE_UNKNOWN;
270 blkdev->target = 0xff;
271 blkdev->type = DEV_TYPE_UNKNOWN;
272 blkdev->block_read = usb_stor_read;
273 blkdev->block_write = usb_stor_write;
274 blkdev->lun = lun;
275 blkdev->priv = udev;
276
277 if (usb_stor_get_info(udev, &usb_stor[start],
278 &usb_dev_desc[usb_max_devs]) == 1) {
279 debug("partype: %d\n", blkdev->part_type);
280 part_init(blkdev);
281 debug("partype: %d\n", blkdev->part_type);
282 usb_max_devs++;
283 debug("%s: Found device %p\n", __func__, udev);
284 }
285 }
286 #endif
287
288 return 0;
289 }
290
usb_stor_reset(void)291 void usb_stor_reset(void)
292 {
293 usb_max_devs = 0;
294 }
295
296 /*******************************************************************************
297 * scan the usb and reports device info
298 * to the user if mode = 1
299 * returns current device or -1 if no
300 */
usb_stor_scan(int mode)301 int usb_stor_scan(int mode)
302 {
303 if (mode == 1)
304 printf(" scanning usb for storage devices... ");
305
306 #if !CONFIG_IS_ENABLED(DM_USB)
307 unsigned char i;
308
309 usb_disable_asynch(1); /* asynch transfer not allowed */
310
311 usb_stor_reset();
312 for (i = 0; i < USB_MAX_DEVICE; i++) {
313 struct usb_device *dev;
314
315 dev = usb_get_dev_index(i); /* get device */
316 debug("i=%d\n", i);
317 if (usb_stor_probe_device(dev))
318 break;
319 } /* for */
320
321 usb_disable_asynch(0); /* asynch transfer allowed */
322 #endif
323 printf("%d Storage Device(s) found\n", usb_max_devs);
324 if (usb_max_devs > 0)
325 return 0;
326 return -1;
327 }
328
usb_stor_irq(struct usb_device * dev)329 static int usb_stor_irq(struct usb_device *dev)
330 {
331 struct us_data *us;
332 us = (struct us_data *)dev->privptr;
333
334 if (us->ip_wanted)
335 us->ip_wanted = 0;
336 return 0;
337 }
338
339
340 #ifdef DEBUG
341
usb_show_srb(struct scsi_cmd * pccb)342 static void usb_show_srb(struct scsi_cmd *pccb)
343 {
344 int i;
345 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
346 for (i = 0; i < 12; i++)
347 printf("%02X ", pccb->cmd[i]);
348 printf("\n");
349 }
350
display_int_status(unsigned long tmp)351 static void display_int_status(unsigned long tmp)
352 {
353 printf("Status: %s %s %s %s %s %s %s\n",
354 (tmp & USB_ST_ACTIVE) ? "Active" : "",
355 (tmp & USB_ST_STALLED) ? "Stalled" : "",
356 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
357 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
358 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
359 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
360 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
361 }
362 #endif
363 /***********************************************************************
364 * Data transfer routines
365 ***********************************************************************/
366
us_one_transfer(struct us_data * us,int pipe,char * buf,int length)367 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
368 {
369 int max_size;
370 int this_xfer;
371 int result;
372 int partial;
373 int maxtry;
374 int stat;
375
376 /* determine the maximum packet size for these transfers */
377 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
378
379 /* while we have data left to transfer */
380 while (length) {
381
382 /* calculate how long this will be -- maximum or a remainder */
383 this_xfer = length > max_size ? max_size : length;
384 length -= this_xfer;
385
386 /* setup the retry counter */
387 maxtry = 10;
388
389 /* set up the transfer loop */
390 do {
391 /* transfer the data */
392 debug("Bulk xfer 0x%lx(%d) try #%d\n",
393 (ulong)map_to_sysmem(buf), this_xfer,
394 11 - maxtry);
395 result = usb_bulk_msg(us->pusb_dev, pipe, buf,
396 this_xfer, &partial,
397 USB_CNTL_TIMEOUT * 5);
398 debug("bulk_msg returned %d xferred %d/%d\n",
399 result, partial, this_xfer);
400 if (us->pusb_dev->status != 0) {
401 /* if we stall, we need to clear it before
402 * we go on
403 */
404 #ifdef DEBUG
405 display_int_status(us->pusb_dev->status);
406 #endif
407 if (us->pusb_dev->status & USB_ST_STALLED) {
408 debug("stalled ->clearing endpoint" \
409 "halt for pipe 0x%x\n", pipe);
410 stat = us->pusb_dev->status;
411 usb_clear_halt(us->pusb_dev, pipe);
412 us->pusb_dev->status = stat;
413 if (this_xfer == partial) {
414 debug("bulk transferred" \
415 "with error %lX," \
416 " but data ok\n",
417 us->pusb_dev->status);
418 return 0;
419 }
420 else
421 return result;
422 }
423 if (us->pusb_dev->status & USB_ST_NAK_REC) {
424 debug("Device NAKed bulk_msg\n");
425 return result;
426 }
427 debug("bulk transferred with error");
428 if (this_xfer == partial) {
429 debug(" %ld, but data ok\n",
430 us->pusb_dev->status);
431 return 0;
432 }
433 /* if our try counter reaches 0, bail out */
434 debug(" %ld, data %d\n",
435 us->pusb_dev->status, partial);
436 if (!maxtry--)
437 return result;
438 }
439 /* update to show what data was transferred */
440 this_xfer -= partial;
441 buf += partial;
442 /* continue until this transfer is done */
443 } while (this_xfer);
444 }
445
446 /* if we get here, we're done and successful */
447 return 0;
448 }
449
usb_stor_BBB_reset(struct us_data * us)450 static int usb_stor_BBB_reset(struct us_data *us)
451 {
452 int result;
453 unsigned int pipe;
454
455 /*
456 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
457 *
458 * For Reset Recovery the host shall issue in the following order:
459 * a) a Bulk-Only Mass Storage Reset
460 * b) a Clear Feature HALT to the Bulk-In endpoint
461 * c) a Clear Feature HALT to the Bulk-Out endpoint
462 *
463 * This is done in 3 steps.
464 *
465 * If the reset doesn't succeed, the device should be port reset.
466 *
467 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
468 */
469 debug("BBB_reset\n");
470 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
471 US_BBB_RESET,
472 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
473 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
474
475 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
476 debug("RESET:stall\n");
477 return -1;
478 }
479
480 /* long wait for reset */
481 mdelay(150);
482 debug("BBB_reset result %d: status %lX reset\n",
483 result, us->pusb_dev->status);
484 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
485 result = usb_clear_halt(us->pusb_dev, pipe);
486 /* long wait for reset */
487 mdelay(150);
488 debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
489 result, us->pusb_dev->status);
490 /* long wait for reset */
491 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
492 result = usb_clear_halt(us->pusb_dev, pipe);
493 mdelay(150);
494 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
495 result, us->pusb_dev->status);
496 debug("BBB_reset done\n");
497 return 0;
498 }
499
500 /* FIXME: this reset function doesn't really reset the port, and it
501 * should. Actually it should probably do what it's doing here, and
502 * reset the port physically
503 */
usb_stor_CB_reset(struct us_data * us)504 static int usb_stor_CB_reset(struct us_data *us)
505 {
506 unsigned char cmd[12];
507 int result;
508
509 debug("CB_reset\n");
510 memset(cmd, 0xff, sizeof(cmd));
511 cmd[0] = SCSI_SEND_DIAG;
512 cmd[1] = 4;
513 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
514 US_CBI_ADSC,
515 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
516 0, us->ifnum, cmd, sizeof(cmd),
517 USB_CNTL_TIMEOUT * 5);
518
519 /* long wait for reset */
520 mdelay(1500);
521 debug("CB_reset result %d: status %lX clearing endpoint halt\n",
522 result, us->pusb_dev->status);
523 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
524 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
525
526 debug("CB_reset done\n");
527 return 0;
528 }
529
530 /*
531 * Set up the command for a BBB device. Note that the actual SCSI
532 * command is copied into cbw.CBWCDB.
533 */
usb_stor_BBB_comdat(struct scsi_cmd * srb,struct us_data * us)534 static int usb_stor_BBB_comdat(struct scsi_cmd *srb, struct us_data *us)
535 {
536 int result;
537 int actlen;
538 int dir_in;
539 unsigned int pipe;
540 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1);
541
542 dir_in = US_DIRECTION(srb->cmd[0]);
543
544 #ifdef BBB_COMDAT_TRACE
545 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
546 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
547 srb->pdata);
548 if (srb->cmdlen) {
549 for (result = 0; result < srb->cmdlen; result++)
550 printf("cmd[%d] %#x ", result, srb->cmd[result]);
551 printf("\n");
552 }
553 #endif
554 /* sanity checks */
555 if (!(srb->cmdlen <= CBWCDBLENGTH)) {
556 debug("usb_stor_BBB_comdat:cmdlen too large\n");
557 return -1;
558 }
559
560 /* always OUT to the ep */
561 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
562
563 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
564 cbw->dCBWTag = cpu_to_le32(CBWTag++);
565 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
566 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
567 cbw->bCBWLUN = srb->lun;
568 cbw->bCDBLength = srb->cmdlen;
569 /* copy the command data into the CBW command data buffer */
570 /* DST SRC LEN!!! */
571
572 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
573 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
574 &actlen, USB_CNTL_TIMEOUT * 5);
575 if (result < 0)
576 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
577 return result;
578 }
579
580 /* FIXME: we also need a CBI_command which sets up the completion
581 * interrupt, and waits for it
582 */
usb_stor_CB_comdat(struct scsi_cmd * srb,struct us_data * us)583 static int usb_stor_CB_comdat(struct scsi_cmd *srb, struct us_data *us)
584 {
585 int result = 0;
586 int dir_in, retry;
587 unsigned int pipe;
588 unsigned long status;
589
590 retry = 5;
591 dir_in = US_DIRECTION(srb->cmd[0]);
592
593 if (dir_in)
594 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
595 else
596 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
597
598 while (retry--) {
599 debug("CBI gets a command: Try %d\n", 5 - retry);
600 #ifdef DEBUG
601 usb_show_srb(srb);
602 #endif
603 /* let's send the command via the control pipe */
604 result = usb_control_msg(us->pusb_dev,
605 usb_sndctrlpipe(us->pusb_dev , 0),
606 US_CBI_ADSC,
607 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
608 0, us->ifnum,
609 srb->cmd, srb->cmdlen,
610 USB_CNTL_TIMEOUT * 5);
611 debug("CB_transport: control msg returned %d, status %lX\n",
612 result, us->pusb_dev->status);
613 /* check the return code for the command */
614 if (result < 0) {
615 if (us->pusb_dev->status & USB_ST_STALLED) {
616 status = us->pusb_dev->status;
617 debug(" stall during command found," \
618 " clear pipe\n");
619 usb_clear_halt(us->pusb_dev,
620 usb_sndctrlpipe(us->pusb_dev, 0));
621 us->pusb_dev->status = status;
622 }
623 debug(" error during command %02X" \
624 " Stat = %lX\n", srb->cmd[0],
625 us->pusb_dev->status);
626 return result;
627 }
628 /* transfer the data payload for this command, if one exists*/
629
630 debug("CB_transport: control msg returned %d," \
631 " direction is %s to go 0x%lx\n", result,
632 dir_in ? "IN" : "OUT", srb->datalen);
633 if (srb->datalen) {
634 result = us_one_transfer(us, pipe, (char *)srb->pdata,
635 srb->datalen);
636 debug("CBI attempted to transfer data," \
637 " result is %d status %lX, len %d\n",
638 result, us->pusb_dev->status,
639 us->pusb_dev->act_len);
640 if (!(us->pusb_dev->status & USB_ST_NAK_REC))
641 break;
642 } /* if (srb->datalen) */
643 else
644 break;
645 }
646 /* return result */
647
648 return result;
649 }
650
651
usb_stor_CBI_get_status(struct scsi_cmd * srb,struct us_data * us)652 static int usb_stor_CBI_get_status(struct scsi_cmd *srb, struct us_data *us)
653 {
654 int timeout;
655
656 us->ip_wanted = 1;
657 usb_int_msg(us->pusb_dev, us->irqpipe,
658 (void *)&us->ip_data, us->irqmaxp, us->irqinterval, false);
659 timeout = 1000;
660 while (timeout--) {
661 if (us->ip_wanted == 0)
662 break;
663 mdelay(10);
664 }
665 if (us->ip_wanted) {
666 printf(" Did not get interrupt on CBI\n");
667 us->ip_wanted = 0;
668 return USB_STOR_TRANSPORT_ERROR;
669 }
670 debug("Got interrupt data 0x%x, transferred %d status 0x%lX\n",
671 us->ip_data, us->pusb_dev->irq_act_len,
672 us->pusb_dev->irq_status);
673 /* UFI gives us ASC and ASCQ, like a request sense */
674 if (us->subclass == US_SC_UFI) {
675 if (srb->cmd[0] == SCSI_REQ_SENSE ||
676 srb->cmd[0] == SCSI_INQUIRY)
677 return USB_STOR_TRANSPORT_GOOD; /* Good */
678 else if (us->ip_data)
679 return USB_STOR_TRANSPORT_FAILED;
680 else
681 return USB_STOR_TRANSPORT_GOOD;
682 }
683 /* otherwise, we interpret the data normally */
684 switch (us->ip_data) {
685 case 0x0001:
686 return USB_STOR_TRANSPORT_GOOD;
687 case 0x0002:
688 return USB_STOR_TRANSPORT_FAILED;
689 default:
690 return USB_STOR_TRANSPORT_ERROR;
691 } /* switch */
692 return USB_STOR_TRANSPORT_ERROR;
693 }
694
695 #define USB_TRANSPORT_UNKNOWN_RETRY 5
696 #define USB_TRANSPORT_NOT_READY_RETRY 10
697
698 /* clear a stall on an endpoint - special for BBB devices */
usb_stor_BBB_clear_endpt_stall(struct us_data * us,__u8 endpt)699 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
700 {
701 /* ENDPOINT_HALT = 0, so set value to 0 */
702 return usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
703 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
704 endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
705 }
706
usb_stor_BBB_transport(struct scsi_cmd * srb,struct us_data * us)707 static int usb_stor_BBB_transport(struct scsi_cmd *srb, struct us_data *us)
708 {
709 int result, retry;
710 int dir_in;
711 int actlen, data_actlen;
712 unsigned int pipe, pipein, pipeout;
713 ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1);
714 #ifdef BBB_XPORT_TRACE
715 unsigned char *ptr;
716 int index;
717 #endif
718
719 dir_in = US_DIRECTION(srb->cmd[0]);
720
721 /* COMMAND phase */
722 debug("COMMAND phase\n");
723 result = usb_stor_BBB_comdat(srb, us);
724 if (result < 0) {
725 debug("failed to send CBW status %ld\n",
726 us->pusb_dev->status);
727 usb_stor_BBB_reset(us);
728 return USB_STOR_TRANSPORT_FAILED;
729 }
730 if (!(us->flags & USB_READY))
731 mdelay(5);
732 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
733 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
734 /* DATA phase + error handling */
735 data_actlen = 0;
736 /* no data, go immediately to the STATUS phase */
737 if (srb->datalen == 0)
738 goto st;
739 debug("DATA phase\n");
740 if (dir_in)
741 pipe = pipein;
742 else
743 pipe = pipeout;
744
745 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
746 &data_actlen, USB_CNTL_TIMEOUT * 5);
747 /* special handling of STALL in DATA phase */
748 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
749 debug("DATA:stall\n");
750 /* clear the STALL on the endpoint */
751 result = usb_stor_BBB_clear_endpt_stall(us,
752 dir_in ? us->ep_in : us->ep_out);
753 if (result >= 0)
754 /* continue on to STATUS phase */
755 goto st;
756 }
757 if (result < 0) {
758 debug("usb_bulk_msg error status %ld\n",
759 us->pusb_dev->status);
760 usb_stor_BBB_reset(us);
761 return USB_STOR_TRANSPORT_FAILED;
762 }
763 #ifdef BBB_XPORT_TRACE
764 for (index = 0; index < data_actlen; index++)
765 printf("pdata[%d] %#x ", index, srb->pdata[index]);
766 printf("\n");
767 #endif
768 /* STATUS phase + error handling */
769 st:
770 retry = 0;
771 again:
772 debug("STATUS phase\n");
773 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
774 &actlen, USB_CNTL_TIMEOUT*5);
775
776 /* special handling of STALL in STATUS phase */
777 if ((result < 0) && (retry < 1) &&
778 (us->pusb_dev->status & USB_ST_STALLED)) {
779 debug("STATUS:stall\n");
780 /* clear the STALL on the endpoint */
781 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
782 if (result >= 0 && (retry++ < 1))
783 /* do a retry */
784 goto again;
785 }
786 if (result < 0) {
787 debug("usb_bulk_msg error status %ld\n",
788 us->pusb_dev->status);
789 usb_stor_BBB_reset(us);
790 return USB_STOR_TRANSPORT_FAILED;
791 }
792 #ifdef BBB_XPORT_TRACE
793 ptr = (unsigned char *)csw;
794 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
795 printf("ptr[%d] %#x ", index, ptr[index]);
796 printf("\n");
797 #endif
798 /* misuse pipe to get the residue */
799 pipe = le32_to_cpu(csw->dCSWDataResidue);
800 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
801 pipe = srb->datalen - data_actlen;
802 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
803 debug("!CSWSIGNATURE\n");
804 usb_stor_BBB_reset(us);
805 return USB_STOR_TRANSPORT_FAILED;
806 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
807 debug("!Tag\n");
808 usb_stor_BBB_reset(us);
809 return USB_STOR_TRANSPORT_FAILED;
810 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
811 debug(">PHASE\n");
812 usb_stor_BBB_reset(us);
813 return USB_STOR_TRANSPORT_FAILED;
814 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
815 debug("=PHASE\n");
816 usb_stor_BBB_reset(us);
817 return USB_STOR_TRANSPORT_FAILED;
818 } else if (data_actlen > srb->datalen) {
819 debug("transferred %dB instead of %ldB\n",
820 data_actlen, srb->datalen);
821 return USB_STOR_TRANSPORT_FAILED;
822 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
823 debug("FAILED\n");
824 return USB_STOR_TRANSPORT_FAILED;
825 }
826
827 return result;
828 }
829
usb_stor_CB_transport(struct scsi_cmd * srb,struct us_data * us)830 static int usb_stor_CB_transport(struct scsi_cmd *srb, struct us_data *us)
831 {
832 int result, status;
833 struct scsi_cmd *psrb;
834 struct scsi_cmd reqsrb;
835 int retry, notready;
836
837 psrb = &reqsrb;
838 status = USB_STOR_TRANSPORT_GOOD;
839 retry = 0;
840 notready = 0;
841 /* issue the command */
842 do_retry:
843 result = usb_stor_CB_comdat(srb, us);
844 debug("command / Data returned %d, status %lX\n",
845 result, us->pusb_dev->status);
846 /* if this is an CBI Protocol, get IRQ */
847 if (us->protocol == US_PR_CBI) {
848 status = usb_stor_CBI_get_status(srb, us);
849 /* if the status is error, report it */
850 if (status == USB_STOR_TRANSPORT_ERROR) {
851 debug(" USB CBI Command Error\n");
852 return status;
853 }
854 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
855 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
856 if (!us->ip_data) {
857 /* if the status is good, report it */
858 if (status == USB_STOR_TRANSPORT_GOOD) {
859 debug(" USB CBI Command Good\n");
860 return status;
861 }
862 }
863 }
864 /* do we have to issue an auto request? */
865 /* HERE we have to check the result */
866 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
867 debug("ERROR %lX\n", us->pusb_dev->status);
868 us->transport_reset(us);
869 return USB_STOR_TRANSPORT_ERROR;
870 }
871 if ((us->protocol == US_PR_CBI) &&
872 ((srb->cmd[0] == SCSI_REQ_SENSE) ||
873 (srb->cmd[0] == SCSI_INQUIRY))) {
874 /* do not issue an autorequest after request sense */
875 debug("No auto request and good\n");
876 return USB_STOR_TRANSPORT_GOOD;
877 }
878 /* issue an request_sense */
879 memset(&psrb->cmd[0], 0, 12);
880 psrb->cmd[0] = SCSI_REQ_SENSE;
881 psrb->cmd[1] = srb->lun << 5;
882 psrb->cmd[4] = 18;
883 psrb->datalen = 18;
884 psrb->pdata = &srb->sense_buf[0];
885 psrb->cmdlen = 12;
886 /* issue the command */
887 result = usb_stor_CB_comdat(psrb, us);
888 debug("auto request returned %d\n", result);
889 /* if this is an CBI Protocol, get IRQ */
890 if (us->protocol == US_PR_CBI)
891 status = usb_stor_CBI_get_status(psrb, us);
892
893 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
894 debug(" AUTO REQUEST ERROR %ld\n",
895 us->pusb_dev->status);
896 return USB_STOR_TRANSPORT_ERROR;
897 }
898 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
899 srb->sense_buf[0], srb->sense_buf[2],
900 srb->sense_buf[12], srb->sense_buf[13]);
901 /* Check the auto request result */
902 if ((srb->sense_buf[2] == 0) &&
903 (srb->sense_buf[12] == 0) &&
904 (srb->sense_buf[13] == 0)) {
905 /* ok, no sense */
906 return USB_STOR_TRANSPORT_GOOD;
907 }
908
909 /* Check the auto request result */
910 switch (srb->sense_buf[2]) {
911 case 0x01:
912 /* Recovered Error */
913 return USB_STOR_TRANSPORT_GOOD;
914 break;
915 case 0x02:
916 /* Not Ready */
917 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
918 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
919 " 0x%02X (NOT READY)\n", srb->cmd[0],
920 srb->sense_buf[0], srb->sense_buf[2],
921 srb->sense_buf[12], srb->sense_buf[13]);
922 return USB_STOR_TRANSPORT_FAILED;
923 } else {
924 mdelay(100);
925 goto do_retry;
926 }
927 break;
928 default:
929 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
930 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
931 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
932 srb->sense_buf[2], srb->sense_buf[12],
933 srb->sense_buf[13]);
934 return USB_STOR_TRANSPORT_FAILED;
935 } else
936 goto do_retry;
937 break;
938 }
939 return USB_STOR_TRANSPORT_FAILED;
940 }
941
usb_stor_set_max_xfer_blk(struct usb_device * udev,struct us_data * us)942 static void usb_stor_set_max_xfer_blk(struct usb_device *udev,
943 struct us_data *us)
944 {
945 /*
946 * Limit the total size of a transfer to 120 KB.
947 *
948 * Some devices are known to choke with anything larger. It seems like
949 * the problem stems from the fact that original IDE controllers had
950 * only an 8-bit register to hold the number of sectors in one transfer
951 * and even those couldn't handle a full 256 sectors.
952 *
953 * Because we want to make sure we interoperate with as many devices as
954 * possible, we will maintain a 240 sector transfer size limit for USB
955 * Mass Storage devices.
956 *
957 * Tests show that other operating have similar limits with Microsoft
958 * Windows 7 limiting transfers to 128 sectors for both USB2 and USB3
959 * and Apple Mac OS X 10.11 limiting transfers to 256 sectors for USB2
960 * and 2048 for USB3 devices.
961 */
962 unsigned short blk = 240;
963
964 #if CONFIG_IS_ENABLED(DM_USB)
965 size_t size;
966 int ret;
967
968 ret = usb_get_max_xfer_size(udev, (size_t *)&size);
969 if ((ret >= 0) && (size < blk * 512))
970 blk = size / 512;
971 #endif
972
973 us->max_xfer_blk = blk;
974 }
975
usb_inquiry(struct scsi_cmd * srb,struct us_data * ss)976 static int usb_inquiry(struct scsi_cmd *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
usb_request_sense(struct scsi_cmd * srb,struct us_data * ss)1000 static int usb_request_sense(struct scsi_cmd *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
usb_test_unit_ready(struct scsi_cmd * srb,struct us_data * ss)1020 static int usb_test_unit_ready(struct scsi_cmd *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
usb_read_capacity(struct scsi_cmd * srb,struct us_data * ss)1051 static int usb_read_capacity(struct scsi_cmd *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
usb_read_10(struct scsi_cmd * srb,struct us_data * ss,unsigned long start,unsigned short blocks)1069 static int usb_read_10(struct scsi_cmd *srb, struct us_data *ss,
1070 unsigned long start, 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
usb_write_10(struct scsi_cmd * srb,struct us_data * ss,unsigned long start,unsigned short blocks)1086 static int usb_write_10(struct scsi_cmd *srb, struct us_data *ss,
1087 unsigned long start, 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 */
usb_bin_fixup(struct usb_device_descriptor descriptor,unsigned char vendor[],unsigned char product[])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
usb_stor_read(struct udevice * dev,lbaint_t blknr,lbaint_t blkcnt,void * buffer)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 struct scsi_cmd *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 > ss->max_xfer_blk)
1177 smallblks = ss->max_xfer_blk;
1178 else
1179 smallblks = (unsigned short) blks;
1180 retry_it:
1181 if (smallblks == ss->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 >= ss->max_xfer_blk)
1205 debug("\n");
1206 return blkcnt;
1207 }
1208
1209 #ifdef CONFIG_BLK
usb_stor_write(struct udevice * dev,lbaint_t blknr,lbaint_t blkcnt,const void * buffer)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 struct scsi_cmd *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 > ss->max_xfer_blk)
1263 smallblks = ss->max_xfer_blk;
1264 else
1265 smallblks = (unsigned short) blks;
1266 retry_it:
1267 if (smallblks == ss->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 >= ss->max_xfer_blk)
1290 debug("\n");
1291 return blkcnt;
1292
1293 }
1294
1295 /* Probe to see if a new device is actually a Storage device */
usb_storage_probe(struct usb_device * dev,unsigned int ifnum,struct us_data * ss)1296 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1297 struct us_data *ss)
1298 {
1299 struct usb_interface *iface;
1300 int i;
1301 struct usb_endpoint_descriptor *ep_desc;
1302 unsigned int flags = 0;
1303
1304 /* let's examine the device now */
1305 iface = &dev->config.if_desc[ifnum];
1306
1307 if (dev->descriptor.bDeviceClass != 0 ||
1308 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1309 iface->desc.bInterfaceSubClass < US_SC_MIN ||
1310 iface->desc.bInterfaceSubClass > US_SC_MAX) {
1311 debug("Not mass storage\n");
1312 /* if it's not a mass storage, we go no further */
1313 return 0;
1314 }
1315
1316 memset(ss, 0, sizeof(struct us_data));
1317
1318 /* At this point, we know we've got a live one */
1319 debug("\n\nUSB Mass Storage device detected\n");
1320
1321 /* Initialize the us_data structure with some useful info */
1322 ss->flags = flags;
1323 ss->ifnum = ifnum;
1324 ss->pusb_dev = dev;
1325 ss->attention_done = 0;
1326 ss->subclass = iface->desc.bInterfaceSubClass;
1327 ss->protocol = iface->desc.bInterfaceProtocol;
1328
1329 /* set the handler pointers based on the protocol */
1330 debug("Transport: ");
1331 switch (ss->protocol) {
1332 case US_PR_CB:
1333 debug("Control/Bulk\n");
1334 ss->transport = usb_stor_CB_transport;
1335 ss->transport_reset = usb_stor_CB_reset;
1336 break;
1337
1338 case US_PR_CBI:
1339 debug("Control/Bulk/Interrupt\n");
1340 ss->transport = usb_stor_CB_transport;
1341 ss->transport_reset = usb_stor_CB_reset;
1342 break;
1343 case US_PR_BULK:
1344 debug("Bulk/Bulk/Bulk\n");
1345 ss->transport = usb_stor_BBB_transport;
1346 ss->transport_reset = usb_stor_BBB_reset;
1347 break;
1348 default:
1349 printf("USB Storage Transport unknown / not yet implemented\n");
1350 return 0;
1351 break;
1352 }
1353
1354 /*
1355 * We are expecting a minimum of 2 endpoints - in and out (bulk).
1356 * An optional interrupt is OK (necessary for CBI protocol).
1357 * We will ignore any others.
1358 */
1359 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1360 ep_desc = &iface->ep_desc[i];
1361 /* is it an BULK endpoint? */
1362 if ((ep_desc->bmAttributes &
1363 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1364 if (ep_desc->bEndpointAddress & USB_DIR_IN)
1365 ss->ep_in = ep_desc->bEndpointAddress &
1366 USB_ENDPOINT_NUMBER_MASK;
1367 else
1368 ss->ep_out =
1369 ep_desc->bEndpointAddress &
1370 USB_ENDPOINT_NUMBER_MASK;
1371 }
1372
1373 /* is it an interrupt endpoint? */
1374 if ((ep_desc->bmAttributes &
1375 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1376 ss->ep_int = ep_desc->bEndpointAddress &
1377 USB_ENDPOINT_NUMBER_MASK;
1378 ss->irqinterval = ep_desc->bInterval;
1379 }
1380 }
1381 debug("Endpoints In %d Out %d Int %d\n",
1382 ss->ep_in, ss->ep_out, ss->ep_int);
1383
1384 /* Do some basic sanity checks, and bail if we find a problem */
1385 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1386 !ss->ep_in || !ss->ep_out ||
1387 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1388 debug("Problems with device\n");
1389 return 0;
1390 }
1391 /* set class specific stuff */
1392 /* We only handle certain protocols. Currently, these are
1393 * the only ones.
1394 * The SFF8070 accepts the requests used in u-boot
1395 */
1396 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1397 ss->subclass != US_SC_8070) {
1398 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1399 return 0;
1400 }
1401 if (ss->ep_int) {
1402 /* we had found an interrupt endpoint, prepare irq pipe
1403 * set up the IRQ pipe and handler
1404 */
1405 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1406 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1407 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1408 dev->irq_handle = usb_stor_irq;
1409 }
1410
1411 /* Set the maximum transfer size per host controller setting */
1412 usb_stor_set_max_xfer_blk(dev, ss);
1413
1414 dev->privptr = (void *)ss;
1415 return 1;
1416 }
1417
usb_stor_get_info(struct usb_device * dev,struct us_data * ss,struct blk_desc * dev_desc)1418 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1419 struct blk_desc *dev_desc)
1420 {
1421 unsigned char perq, modi;
1422 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2);
1423 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36);
1424 u32 capacity, blksz;
1425 struct scsi_cmd *pccb = &usb_ccb;
1426
1427 pccb->pdata = usb_stor_buf;
1428
1429 dev_desc->target = dev->devnum;
1430 pccb->lun = dev_desc->lun;
1431 debug(" address %d\n", dev_desc->target);
1432
1433 if (usb_inquiry(pccb, ss)) {
1434 debug("%s: usb_inquiry() failed\n", __func__);
1435 return -1;
1436 }
1437
1438 perq = usb_stor_buf[0];
1439 modi = usb_stor_buf[1];
1440
1441 /*
1442 * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1443 * they would not respond to test_unit_ready .
1444 */
1445 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
1446 debug("%s: unknown/unsupported device\n", __func__);
1447 return 0;
1448 }
1449 if ((modi&0x80) == 0x80) {
1450 /* drive is removable */
1451 dev_desc->removable = 1;
1452 }
1453 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8);
1454 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16);
1455 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4);
1456 dev_desc->vendor[8] = 0;
1457 dev_desc->product[16] = 0;
1458 dev_desc->revision[4] = 0;
1459 #ifdef CONFIG_USB_BIN_FIXUP
1460 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1461 (uchar *)dev_desc->product);
1462 #endif /* CONFIG_USB_BIN_FIXUP */
1463 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1464 usb_stor_buf[3]);
1465 if (usb_test_unit_ready(pccb, ss)) {
1466 printf("Device NOT ready\n"
1467 " Request Sense returned %02X %02X %02X\n",
1468 pccb->sense_buf[2], pccb->sense_buf[12],
1469 pccb->sense_buf[13]);
1470 if (dev_desc->removable == 1)
1471 dev_desc->type = perq;
1472 return 0;
1473 }
1474 pccb->pdata = (unsigned char *)cap;
1475 memset(pccb->pdata, 0, 8);
1476 if (usb_read_capacity(pccb, ss) != 0) {
1477 printf("READ_CAP ERROR\n");
1478 cap[0] = 2880;
1479 cap[1] = 0x200;
1480 }
1481 ss->flags &= ~USB_READY;
1482 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]);
1483 #if 0
1484 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1485 cap[0] >>= 16;
1486
1487 cap[0] = cpu_to_be32(cap[0]);
1488 cap[1] = cpu_to_be32(cap[1]);
1489 #endif
1490
1491 capacity = be32_to_cpu(cap[0]) + 1;
1492 blksz = be32_to_cpu(cap[1]);
1493
1494 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz);
1495 dev_desc->lba = capacity;
1496 dev_desc->blksz = blksz;
1497 dev_desc->log2blksz = LOG2(dev_desc->blksz);
1498 dev_desc->type = perq;
1499 debug(" address %d\n", dev_desc->target);
1500
1501 return 1;
1502 }
1503
1504 #if CONFIG_IS_ENABLED(DM_USB)
1505
usb_mass_storage_probe(struct udevice * dev)1506 static int usb_mass_storage_probe(struct udevice *dev)
1507 {
1508 struct usb_device *udev = dev_get_parent_priv(dev);
1509 int ret;
1510
1511 usb_disable_asynch(1); /* asynch transfer not allowed */
1512 ret = usb_stor_probe_device(udev);
1513 usb_disable_asynch(0); /* asynch transfer allowed */
1514
1515 return ret;
1516 }
1517
1518 static const struct udevice_id usb_mass_storage_ids[] = {
1519 { .compatible = "usb-mass-storage" },
1520 { }
1521 };
1522
1523 U_BOOT_DRIVER(usb_mass_storage) = {
1524 .name = "usb_mass_storage",
1525 .id = UCLASS_MASS_STORAGE,
1526 .of_match = usb_mass_storage_ids,
1527 .probe = usb_mass_storage_probe,
1528 #ifdef CONFIG_BLK
1529 .platdata_auto_alloc_size = sizeof(struct us_data),
1530 #endif
1531 };
1532
1533 UCLASS_DRIVER(usb_mass_storage) = {
1534 .id = UCLASS_MASS_STORAGE,
1535 .name = "usb_mass_storage",
1536 };
1537
1538 static const struct usb_device_id mass_storage_id_table[] = {
1539 {
1540 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1541 .bInterfaceClass = USB_CLASS_MASS_STORAGE
1542 },
1543 { } /* Terminating entry */
1544 };
1545
1546 U_BOOT_USB_DEVICE(usb_mass_storage, mass_storage_id_table);
1547 #endif
1548
1549 #ifdef CONFIG_BLK
1550 static const struct blk_ops usb_storage_ops = {
1551 .read = usb_stor_read,
1552 .write = usb_stor_write,
1553 };
1554
1555 U_BOOT_DRIVER(usb_storage_blk) = {
1556 .name = "usb_storage_blk",
1557 .id = UCLASS_BLK,
1558 .ops = &usb_storage_ops,
1559 };
1560 #else
1561 U_BOOT_LEGACY_BLK(usb) = {
1562 .if_typename = "usb",
1563 .if_type = IF_TYPE_USB,
1564 .max_devs = USB_MAX_STOR_DEV,
1565 .desc = usb_dev_desc,
1566 };
1567 #endif
1568