]> git.ipfire.org Git - people/ms/u-boot.git/blob - common/usb_storage.c
projects / people / ms / u-boot.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'master' of git://git.denx.de/u-boot-usb
[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 *
13 * For BBB support (C) Copyright 2003
14 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
15 *
16 * BBB support based on /sys/dev/usb/umass.c from
17 * FreeBSD.
18 *
19 * SPDX-License-Identifier: GPL-2.0+
20 */
21
22 /* Note:
23 * Currently only the CBI transport protocoll has been implemented, and it
24 * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
25 * transport protocoll may work as well.
26 */
27 /*
28 * New Note:
29 * Support for USB Mass Storage Devices (BBB) has been added. It has
30 * only been tested with USB memory sticks.
31 */
32
33
34 #include <common.h>
35 #include <command.h>
36 #include <inttypes.h>
37 #include <asm/byteorder.h>
38 #include <asm/processor.h>
39
40 #include <part.h>
41 #include <usb.h>
42
43 #undef BBB_COMDAT_TRACE
44 #undef BBB_XPORT_TRACE
45
46 #include <scsi.h>
47 /* direction table -- this indicates the direction of the data
48 * transfer for each command code -- a 1 indicates input
49 */
50 static const unsigned char us_direction[256/8] = {
51 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
52 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
53 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
54 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
55 };
56 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
57
58 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN)));
59
60 /*
61 * CBI style
62 */
63
64 #define US_CBI_ADSC 0
65
66 /*
67 * BULK only
68 */
69 #define US_BBB_RESET 0xff
70 #define US_BBB_GET_MAX_LUN 0xfe
71
72 /* Command Block Wrapper */
73 typedef struct {
74 __u32 dCBWSignature;
75 # define CBWSIGNATURE 0x43425355
76 __u32 dCBWTag;
77 __u32 dCBWDataTransferLength;
78 __u8 bCBWFlags;
79 # define CBWFLAGS_OUT 0x00
80 # define CBWFLAGS_IN 0x80
81 __u8 bCBWLUN;
82 __u8 bCDBLength;
83 # define CBWCDBLENGTH 16
84 __u8 CBWCDB[CBWCDBLENGTH];
85 } umass_bbb_cbw_t;
86 #define UMASS_BBB_CBW_SIZE 31
87 static __u32 CBWTag;
88
89 /* Command Status Wrapper */
90 typedef struct {
91 __u32 dCSWSignature;
92 # define CSWSIGNATURE 0x53425355
93 __u32 dCSWTag;
94 __u32 dCSWDataResidue;
95 __u8 bCSWStatus;
96 # define CSWSTATUS_GOOD 0x0
97 # define CSWSTATUS_FAILED 0x1
98 # define CSWSTATUS_PHASE 0x2
99 } umass_bbb_csw_t;
100 #define UMASS_BBB_CSW_SIZE 13
101
102 #define USB_MAX_STOR_DEV 5
103 static int usb_max_devs; /* number of highest available usb device */
104
105 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
106
107 struct us_data;
108 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data);
109 typedef int (*trans_reset)(struct us_data *data);
110
111 struct us_data {
112 struct usb_device *pusb_dev; /* this usb_device */
113
114 unsigned int flags; /* from filter initially */
115 # define USB_READY (1 << 0)
116 unsigned char ifnum; /* interface number */
117 unsigned char ep_in; /* in endpoint */
118 unsigned char ep_out; /* out ....... */
119 unsigned char ep_int; /* interrupt . */
120 unsigned char subclass; /* as in overview */
121 unsigned char protocol; /* .............. */
122 unsigned char attention_done; /* force attn on first cmd */
123 unsigned short ip_data; /* interrupt data */
124 int action; /* what to do */
125 int ip_wanted; /* needed */
126 int *irq_handle; /* for USB int requests */
127 unsigned int irqpipe; /* pipe for release_irq */
128 unsigned char irqmaxp; /* max packed for irq Pipe */
129 unsigned char irqinterval; /* Intervall for IRQ Pipe */
130 ccb *srb; /* current srb */
131 trans_reset transport_reset; /* reset routine */
132 trans_cmnd transport; /* transport routine */
133 };
134
135 #ifdef CONFIG_USB_EHCI
136 /*
137 * The U-Boot EHCI driver can handle any transfer length as long as there is
138 * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are
139 * limited to 65535 blocks.
140 */
141 #define USB_MAX_XFER_BLK 65535
142 #else
143 #define USB_MAX_XFER_BLK 20
144 #endif
145
146 static struct us_data usb_stor[USB_MAX_STOR_DEV];
147
148
149 #define USB_STOR_TRANSPORT_GOOD 0
150 #define USB_STOR_TRANSPORT_FAILED -1
151 #define USB_STOR_TRANSPORT_ERROR -2
152
153 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
154 block_dev_desc_t *dev_desc);
155 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
156 struct us_data *ss);
157 unsigned long usb_stor_read(int device, lbaint_t blknr,
158 lbaint_t blkcnt, void *buffer);
159 unsigned long usb_stor_write(int device, lbaint_t blknr,
160 lbaint_t blkcnt, const void *buffer);
161 struct usb_device * usb_get_dev_index(int index);
162 void uhci_show_temp_int_td(void);
163
164 #ifdef CONFIG_PARTITIONS
165 block_dev_desc_t *usb_stor_get_dev(int index)
166 {
167 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
168 }
169 #endif
170
171 static void usb_show_progress(void)
172 {
173 debug(".");
174 }
175
176 /*******************************************************************************
177 * show info on storage devices; 'usb start/init' must be invoked earlier
178 * as we only retrieve structures populated during devices initialization
179 */
180 int usb_stor_info(void)
181 {
182 int i;
183
184 if (usb_max_devs > 0) {
185 for (i = 0; i < usb_max_devs; i++) {
186 printf(" Device %d: ", i);
187 dev_print(&usb_dev_desc[i]);
188 }
189 return 0;
190 }
191
192 printf("No storage devices, perhaps not 'usb start'ed..?\n");
193 return 1;
194 }
195
196 static unsigned int usb_get_max_lun(struct us_data *us)
197 {
198 int len;
199 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
200 len = usb_control_msg(us->pusb_dev,
201 usb_rcvctrlpipe(us->pusb_dev, 0),
202 US_BBB_GET_MAX_LUN,
203 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
204 0, us->ifnum,
205 result, sizeof(char),
206 USB_CNTL_TIMEOUT * 5);
207 debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result);
208 return (len > 0) ? *result : 0;
209 }
210
211 /*******************************************************************************
212 * scan the usb and reports device info
213 * to the user if mode = 1
214 * returns current device or -1 if no
215 */
216 int usb_stor_scan(int mode)
217 {
218 unsigned char i;
219 struct usb_device *dev;
220
221 if (mode == 1)
222 printf(" scanning usb for storage devices... ");
223
224 usb_disable_asynch(1); /* asynch transfer not allowed */
225
226 for (i = 0; i < USB_MAX_STOR_DEV; i++) {
227 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
228 usb_dev_desc[i].if_type = IF_TYPE_USB;
229 usb_dev_desc[i].dev = i;
230 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
231 usb_dev_desc[i].target = 0xff;
232 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
233 usb_dev_desc[i].block_read = usb_stor_read;
234 usb_dev_desc[i].block_write = usb_stor_write;
235 }
236
237 usb_max_devs = 0;
238 for (i = 0; i < USB_MAX_DEVICE; i++) {
239 dev = usb_get_dev_index(i); /* get device */
240 debug("i=%d\n", i);
241 if (dev == NULL)
242 break; /* no more devices available */
243
244 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
245 /* OK, it's a storage device. Iterate over its LUNs
246 * and populate `usb_dev_desc'.
247 */
248 int lun, max_lun, start = usb_max_devs;
249
250 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
251 for (lun = 0;
252 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
253 lun++) {
254 usb_dev_desc[usb_max_devs].lun = lun;
255 if (usb_stor_get_info(dev, &usb_stor[start],
256 &usb_dev_desc[usb_max_devs]) == 1) {
257 usb_max_devs++;
258 }
259 }
260 }
261 /* if storage device */
262 if (usb_max_devs == USB_MAX_STOR_DEV) {
263 printf("max USB Storage Device reached: %d stopping\n",
264 usb_max_devs);
265 break;
266 }
267 } /* for */
268
269 usb_disable_asynch(0); /* asynch transfer allowed */
270 printf("%d Storage Device(s) found\n", usb_max_devs);
271 if (usb_max_devs > 0)
272 return 0;
273 return -1;
274 }
275
276 static int usb_stor_irq(struct usb_device *dev)
277 {
278 struct us_data *us;
279 us = (struct us_data *)dev->privptr;
280
281 if (us->ip_wanted)
282 us->ip_wanted = 0;
283 return 0;
284 }
285
286
287 #ifdef DEBUG
288
289 static void usb_show_srb(ccb *pccb)
290 {
291 int i;
292 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
293 for (i = 0; i < 12; i++)
294 printf("%02X ", pccb->cmd[i]);
295 printf("\n");
296 }
297
298 static void display_int_status(unsigned long tmp)
299 {
300 printf("Status: %s %s %s %s %s %s %s\n",
301 (tmp & USB_ST_ACTIVE) ? "Active" : "",
302 (tmp & USB_ST_STALLED) ? "Stalled" : "",
303 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
304 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
305 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
306 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
307 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
308 }
309 #endif
310 /***********************************************************************
311 * Data transfer routines
312 ***********************************************************************/
313
314 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
315 {
316 int max_size;
317 int this_xfer;
318 int result;
319 int partial;
320 int maxtry;
321 int stat;
322
323 /* determine the maximum packet size for these transfers */
324 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
325
326 /* while we have data left to transfer */
327 while (length) {
328
329 /* calculate how long this will be -- maximum or a remainder */
330 this_xfer = length > max_size ? max_size : length;
331 length -= this_xfer;
332
333 /* setup the retry counter */
334 maxtry = 10;
335
336 /* set up the transfer loop */
337 do {
338 /* transfer the data */
339 debug("Bulk xfer 0x%x(%d) try #%d\n",
340 (unsigned int)buf, this_xfer, 11 - maxtry);
341 result = usb_bulk_msg(us->pusb_dev, pipe, buf,
342 this_xfer, &partial,
343 USB_CNTL_TIMEOUT * 5);
344 debug("bulk_msg returned %d xferred %d/%d\n",
345 result, partial, this_xfer);
346 if (us->pusb_dev->status != 0) {
347 /* if we stall, we need to clear it before
348 * we go on
349 */
350 #ifdef DEBUG
351 display_int_status(us->pusb_dev->status);
352 #endif
353 if (us->pusb_dev->status & USB_ST_STALLED) {
354 debug("stalled ->clearing endpoint" \
355 "halt for pipe 0x%x\n", pipe);
356 stat = us->pusb_dev->status;
357 usb_clear_halt(us->pusb_dev, pipe);
358 us->pusb_dev->status = stat;
359 if (this_xfer == partial) {
360 debug("bulk transferred" \
361 "with error %lX," \
362 " but data ok\n",
363 us->pusb_dev->status);
364 return 0;
365 }
366 else
367 return result;
368 }
369 if (us->pusb_dev->status & USB_ST_NAK_REC) {
370 debug("Device NAKed bulk_msg\n");
371 return result;
372 }
373 debug("bulk transferred with error");
374 if (this_xfer == partial) {
375 debug(" %ld, but data ok\n",
376 us->pusb_dev->status);
377 return 0;
378 }
379 /* if our try counter reaches 0, bail out */
380 debug(" %ld, data %d\n",
381 us->pusb_dev->status, partial);
382 if (!maxtry--)
383 return result;
384 }
385 /* update to show what data was transferred */
386 this_xfer -= partial;
387 buf += partial;
388 /* continue until this transfer is done */
389 } while (this_xfer);
390 }
391
392 /* if we get here, we're done and successful */
393 return 0;
394 }
395
396 static int usb_stor_BBB_reset(struct us_data *us)
397 {
398 int result;
399 unsigned int pipe;
400
401 /*
402 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
403 *
404 * For Reset Recovery the host shall issue in the following order:
405 * a) a Bulk-Only Mass Storage Reset
406 * b) a Clear Feature HALT to the Bulk-In endpoint
407 * c) a Clear Feature HALT to the Bulk-Out endpoint
408 *
409 * This is done in 3 steps.
410 *
411 * If the reset doesn't succeed, the device should be port reset.
412 *
413 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
414 */
415 debug("BBB_reset\n");
416 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
417 US_BBB_RESET,
418 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
419 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
420
421 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
422 debug("RESET:stall\n");
423 return -1;
424 }
425
426 /* long wait for reset */
427 mdelay(150);
428 debug("BBB_reset result %d: status %lX reset\n",
429 result, us->pusb_dev->status);
430 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
431 result = usb_clear_halt(us->pusb_dev, pipe);
432 /* long wait for reset */
433 mdelay(150);
434 debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
435 result, us->pusb_dev->status);
436 /* long wait for reset */
437 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
438 result = usb_clear_halt(us->pusb_dev, pipe);
439 mdelay(150);
440 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
441 result, us->pusb_dev->status);
442 debug("BBB_reset done\n");
443 return 0;
444 }
445
446 /* FIXME: this reset function doesn't really reset the port, and it
447 * should. Actually it should probably do what it's doing here, and
448 * reset the port physically
449 */
450 static int usb_stor_CB_reset(struct us_data *us)
451 {
452 unsigned char cmd[12];
453 int result;
454
455 debug("CB_reset\n");
456 memset(cmd, 0xff, sizeof(cmd));
457 cmd[0] = SCSI_SEND_DIAG;
458 cmd[1] = 4;
459 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
460 US_CBI_ADSC,
461 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
462 0, us->ifnum, cmd, sizeof(cmd),
463 USB_CNTL_TIMEOUT * 5);
464
465 /* long wait for reset */
466 mdelay(1500);
467 debug("CB_reset result %d: status %lX clearing endpoint halt\n",
468 result, us->pusb_dev->status);
469 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
470 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
471
472 debug("CB_reset done\n");
473 return 0;
474 }
475
476 /*
477 * Set up the command for a BBB device. Note that the actual SCSI
478 * command is copied into cbw.CBWCDB.
479 */
480 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
481 {
482 int result;
483 int actlen;
484 int dir_in;
485 unsigned int pipe;
486 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1);
487
488 dir_in = US_DIRECTION(srb->cmd[0]);
489
490 #ifdef BBB_COMDAT_TRACE
491 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
492 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
493 srb->pdata);
494 if (srb->cmdlen) {
495 for (result = 0; result < srb->cmdlen; result++)
496 printf("cmd[%d] %#x ", result, srb->cmd[result]);
497 printf("\n");
498 }
499 #endif
500 /* sanity checks */
501 if (!(srb->cmdlen <= CBWCDBLENGTH)) {
502 debug("usb_stor_BBB_comdat:cmdlen too large\n");
503 return -1;
504 }
505
506 /* always OUT to the ep */
507 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
508
509 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
510 cbw->dCBWTag = cpu_to_le32(CBWTag++);
511 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
512 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
513 cbw->bCBWLUN = srb->lun;
514 cbw->bCDBLength = srb->cmdlen;
515 /* copy the command data into the CBW command data buffer */
516 /* DST SRC LEN!!! */
517 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
518 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
519 &actlen, USB_CNTL_TIMEOUT * 5);
520 if (result < 0)
521 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
522 return result;
523 }
524
525 /* FIXME: we also need a CBI_command which sets up the completion
526 * interrupt, and waits for it
527 */
528 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
529 {
530 int result = 0;
531 int dir_in, retry;
532 unsigned int pipe;
533 unsigned long status;
534
535 retry = 5;
536 dir_in = US_DIRECTION(srb->cmd[0]);
537
538 if (dir_in)
539 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
540 else
541 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
542
543 while (retry--) {
544 debug("CBI gets a command: Try %d\n", 5 - retry);
545 #ifdef DEBUG
546 usb_show_srb(srb);
547 #endif
548 /* let's send the command via the control pipe */
549 result = usb_control_msg(us->pusb_dev,
550 usb_sndctrlpipe(us->pusb_dev , 0),
551 US_CBI_ADSC,
552 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
553 0, us->ifnum,
554 srb->cmd, srb->cmdlen,
555 USB_CNTL_TIMEOUT * 5);
556 debug("CB_transport: control msg returned %d, status %lX\n",
557 result, us->pusb_dev->status);
558 /* check the return code for the command */
559 if (result < 0) {
560 if (us->pusb_dev->status & USB_ST_STALLED) {
561 status = us->pusb_dev->status;
562 debug(" stall during command found," \
563 " clear pipe\n");
564 usb_clear_halt(us->pusb_dev,
565 usb_sndctrlpipe(us->pusb_dev, 0));
566 us->pusb_dev->status = status;
567 }
568 debug(" error during command %02X" \
569 " Stat = %lX\n", srb->cmd[0],
570 us->pusb_dev->status);
571 return result;
572 }
573 /* transfer the data payload for this command, if one exists*/
574
575 debug("CB_transport: control msg returned %d," \
576 " direction is %s to go 0x%lx\n", result,
577 dir_in ? "IN" : "OUT", srb->datalen);
578 if (srb->datalen) {
579 result = us_one_transfer(us, pipe, (char *)srb->pdata,
580 srb->datalen);
581 debug("CBI attempted to transfer data," \
582 " result is %d status %lX, len %d\n",
583 result, us->pusb_dev->status,
584 us->pusb_dev->act_len);
585 if (!(us->pusb_dev->status & USB_ST_NAK_REC))
586 break;
587 } /* if (srb->datalen) */
588 else
589 break;
590 }
591 /* return result */
592
593 return result;
594 }
595
596
597 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
598 {
599 int timeout;
600
601 us->ip_wanted = 1;
602 submit_int_msg(us->pusb_dev, us->irqpipe,
603 (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
604 timeout = 1000;
605 while (timeout--) {
606 if ((volatile int *) us->ip_wanted == NULL)
607 break;
608 mdelay(10);
609 }
610 if (us->ip_wanted) {
611 printf(" Did not get interrupt on CBI\n");
612 us->ip_wanted = 0;
613 return USB_STOR_TRANSPORT_ERROR;
614 }
615 debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
616 us->ip_data, us->pusb_dev->irq_act_len,
617 us->pusb_dev->irq_status);
618 /* UFI gives us ASC and ASCQ, like a request sense */
619 if (us->subclass == US_SC_UFI) {
620 if (srb->cmd[0] == SCSI_REQ_SENSE ||
621 srb->cmd[0] == SCSI_INQUIRY)
622 return USB_STOR_TRANSPORT_GOOD; /* Good */
623 else if (us->ip_data)
624 return USB_STOR_TRANSPORT_FAILED;
625 else
626 return USB_STOR_TRANSPORT_GOOD;
627 }
628 /* otherwise, we interpret the data normally */
629 switch (us->ip_data) {
630 case 0x0001:
631 return USB_STOR_TRANSPORT_GOOD;
632 case 0x0002:
633 return USB_STOR_TRANSPORT_FAILED;
634 default:
635 return USB_STOR_TRANSPORT_ERROR;
636 } /* switch */
637 return USB_STOR_TRANSPORT_ERROR;
638 }
639
640 #define USB_TRANSPORT_UNKNOWN_RETRY 5
641 #define USB_TRANSPORT_NOT_READY_RETRY 10
642
643 /* clear a stall on an endpoint - special for BBB devices */
644 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
645 {
646 int result;
647
648 /* ENDPOINT_HALT = 0, so set value to 0 */
649 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
650 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
651 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
652 return result;
653 }
654
655 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
656 {
657 int result, retry;
658 int dir_in;
659 int actlen, data_actlen;
660 unsigned int pipe, pipein, pipeout;
661 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1);
662 #ifdef BBB_XPORT_TRACE
663 unsigned char *ptr;
664 int index;
665 #endif
666
667 dir_in = US_DIRECTION(srb->cmd[0]);
668
669 /* COMMAND phase */
670 debug("COMMAND phase\n");
671 result = usb_stor_BBB_comdat(srb, us);
672 if (result < 0) {
673 debug("failed to send CBW status %ld\n",
674 us->pusb_dev->status);
675 usb_stor_BBB_reset(us);
676 return USB_STOR_TRANSPORT_FAILED;
677 }
678 if (!(us->flags & USB_READY))
679 mdelay(5);
680 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
681 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
682 /* DATA phase + error handling */
683 data_actlen = 0;
684 /* no data, go immediately to the STATUS phase */
685 if (srb->datalen == 0)
686 goto st;
687 debug("DATA phase\n");
688 if (dir_in)
689 pipe = pipein;
690 else
691 pipe = pipeout;
692 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
693 &data_actlen, USB_CNTL_TIMEOUT * 5);
694 /* special handling of STALL in DATA phase */
695 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
696 debug("DATA:stall\n");
697 /* clear the STALL on the endpoint */
698 result = usb_stor_BBB_clear_endpt_stall(us,
699 dir_in ? us->ep_in : us->ep_out);
700 if (result >= 0)
701 /* continue on to STATUS phase */
702 goto st;
703 }
704 if (result < 0) {
705 debug("usb_bulk_msg error status %ld\n",
706 us->pusb_dev->status);
707 usb_stor_BBB_reset(us);
708 return USB_STOR_TRANSPORT_FAILED;
709 }
710 #ifdef BBB_XPORT_TRACE
711 for (index = 0; index < data_actlen; index++)
712 printf("pdata[%d] %#x ", index, srb->pdata[index]);
713 printf("\n");
714 #endif
715 /* STATUS phase + error handling */
716 st:
717 retry = 0;
718 again:
719 debug("STATUS phase\n");
720 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
721 &actlen, USB_CNTL_TIMEOUT*5);
722
723 /* special handling of STALL in STATUS phase */
724 if ((result < 0) && (retry < 1) &&
725 (us->pusb_dev->status & USB_ST_STALLED)) {
726 debug("STATUS:stall\n");
727 /* clear the STALL on the endpoint */
728 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
729 if (result >= 0 && (retry++ < 1))
730 /* do a retry */
731 goto again;
732 }
733 if (result < 0) {
734 debug("usb_bulk_msg error status %ld\n",
735 us->pusb_dev->status);
736 usb_stor_BBB_reset(us);
737 return USB_STOR_TRANSPORT_FAILED;
738 }
739 #ifdef BBB_XPORT_TRACE
740 ptr = (unsigned char *)csw;
741 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
742 printf("ptr[%d] %#x ", index, ptr[index]);
743 printf("\n");
744 #endif
745 /* misuse pipe to get the residue */
746 pipe = le32_to_cpu(csw->dCSWDataResidue);
747 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
748 pipe = srb->datalen - data_actlen;
749 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
750 debug("!CSWSIGNATURE\n");
751 usb_stor_BBB_reset(us);
752 return USB_STOR_TRANSPORT_FAILED;
753 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
754 debug("!Tag\n");
755 usb_stor_BBB_reset(us);
756 return USB_STOR_TRANSPORT_FAILED;
757 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
758 debug(">PHASE\n");
759 usb_stor_BBB_reset(us);
760 return USB_STOR_TRANSPORT_FAILED;
761 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
762 debug("=PHASE\n");
763 usb_stor_BBB_reset(us);
764 return USB_STOR_TRANSPORT_FAILED;
765 } else if (data_actlen > srb->datalen) {
766 debug("transferred %dB instead of %ldB\n",
767 data_actlen, srb->datalen);
768 return USB_STOR_TRANSPORT_FAILED;
769 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
770 debug("FAILED\n");
771 return USB_STOR_TRANSPORT_FAILED;
772 }
773
774 return result;
775 }
776
777 static int usb_stor_CB_transport(ccb *srb, struct us_data *us)
778 {
779 int result, status;
780 ccb *psrb;
781 ccb reqsrb;
782 int retry, notready;
783
784 psrb = &reqsrb;
785 status = USB_STOR_TRANSPORT_GOOD;
786 retry = 0;
787 notready = 0;
788 /* issue the command */
789 do_retry:
790 result = usb_stor_CB_comdat(srb, us);
791 debug("command / Data returned %d, status %lX\n",
792 result, us->pusb_dev->status);
793 /* if this is an CBI Protocol, get IRQ */
794 if (us->protocol == US_PR_CBI) {
795 status = usb_stor_CBI_get_status(srb, us);
796 /* if the status is error, report it */
797 if (status == USB_STOR_TRANSPORT_ERROR) {
798 debug(" USB CBI Command Error\n");
799 return status;
800 }
801 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
802 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
803 if (!us->ip_data) {
804 /* if the status is good, report it */
805 if (status == USB_STOR_TRANSPORT_GOOD) {
806 debug(" USB CBI Command Good\n");
807 return status;
808 }
809 }
810 }
811 /* do we have to issue an auto request? */
812 /* HERE we have to check the result */
813 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
814 debug("ERROR %lX\n", us->pusb_dev->status);
815 us->transport_reset(us);
816 return USB_STOR_TRANSPORT_ERROR;
817 }
818 if ((us->protocol == US_PR_CBI) &&
819 ((srb->cmd[0] == SCSI_REQ_SENSE) ||
820 (srb->cmd[0] == SCSI_INQUIRY))) {
821 /* do not issue an autorequest after request sense */
822 debug("No auto request and good\n");
823 return USB_STOR_TRANSPORT_GOOD;
824 }
825 /* issue an request_sense */
826 memset(&psrb->cmd[0], 0, 12);
827 psrb->cmd[0] = SCSI_REQ_SENSE;
828 psrb->cmd[1] = srb->lun << 5;
829 psrb->cmd[4] = 18;
830 psrb->datalen = 18;
831 psrb->pdata = &srb->sense_buf[0];
832 psrb->cmdlen = 12;
833 /* issue the command */
834 result = usb_stor_CB_comdat(psrb, us);
835 debug("auto request returned %d\n", result);
836 /* if this is an CBI Protocol, get IRQ */
837 if (us->protocol == US_PR_CBI)
838 status = usb_stor_CBI_get_status(psrb, us);
839
840 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
841 debug(" AUTO REQUEST ERROR %ld\n",
842 us->pusb_dev->status);
843 return USB_STOR_TRANSPORT_ERROR;
844 }
845 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
846 srb->sense_buf[0], srb->sense_buf[2],
847 srb->sense_buf[12], srb->sense_buf[13]);
848 /* Check the auto request result */
849 if ((srb->sense_buf[2] == 0) &&
850 (srb->sense_buf[12] == 0) &&
851 (srb->sense_buf[13] == 0)) {
852 /* ok, no sense */
853 return USB_STOR_TRANSPORT_GOOD;
854 }
855
856 /* Check the auto request result */
857 switch (srb->sense_buf[2]) {
858 case 0x01:
859 /* Recovered Error */
860 return USB_STOR_TRANSPORT_GOOD;
861 break;
862 case 0x02:
863 /* Not Ready */
864 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
865 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
866 " 0x%02X (NOT READY)\n", srb->cmd[0],
867 srb->sense_buf[0], srb->sense_buf[2],
868 srb->sense_buf[12], srb->sense_buf[13]);
869 return USB_STOR_TRANSPORT_FAILED;
870 } else {
871 mdelay(100);
872 goto do_retry;
873 }
874 break;
875 default:
876 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
877 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
878 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
879 srb->sense_buf[2], srb->sense_buf[12],
880 srb->sense_buf[13]);
881 return USB_STOR_TRANSPORT_FAILED;
882 } else
883 goto do_retry;
884 break;
885 }
886 return USB_STOR_TRANSPORT_FAILED;
887 }
888
889
890 static int usb_inquiry(ccb *srb, struct us_data *ss)
891 {
892 int retry, i;
893 retry = 5;
894 do {
895 memset(&srb->cmd[0], 0, 12);
896 srb->cmd[0] = SCSI_INQUIRY;
897 srb->cmd[1] = srb->lun << 5;
898 srb->cmd[4] = 36;
899 srb->datalen = 36;
900 srb->cmdlen = 12;
901 i = ss->transport(srb, ss);
902 debug("inquiry returns %d\n", i);
903 if (i == 0)
904 break;
905 } while (--retry);
906
907 if (!retry) {
908 printf("error in inquiry\n");
909 return -1;
910 }
911 return 0;
912 }
913
914 static int usb_request_sense(ccb *srb, struct us_data *ss)
915 {
916 char *ptr;
917
918 ptr = (char *)srb->pdata;
919 memset(&srb->cmd[0], 0, 12);
920 srb->cmd[0] = SCSI_REQ_SENSE;
921 srb->cmd[1] = srb->lun << 5;
922 srb->cmd[4] = 18;
923 srb->datalen = 18;
924 srb->pdata = &srb->sense_buf[0];
925 srb->cmdlen = 12;
926 ss->transport(srb, ss);
927 debug("Request Sense returned %02X %02X %02X\n",
928 srb->sense_buf[2], srb->sense_buf[12],
929 srb->sense_buf[13]);
930 srb->pdata = (uchar *)ptr;
931 return 0;
932 }
933
934 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
935 {
936 int retries = 10;
937
938 do {
939 memset(&srb->cmd[0], 0, 12);
940 srb->cmd[0] = SCSI_TST_U_RDY;
941 srb->cmd[1] = srb->lun << 5;
942 srb->datalen = 0;
943 srb->cmdlen = 12;
944 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) {
945 ss->flags |= USB_READY;
946 return 0;
947 }
948 usb_request_sense(srb, ss);
949 /*
950 * Check the Key Code Qualifier, if it matches
951 * "Not Ready - medium not present"
952 * (the sense Key equals 0x2 and the ASC is 0x3a)
953 * return immediately as the medium being absent won't change
954 * unless there is a user action.
955 */
956 if ((srb->sense_buf[2] == 0x02) &&
957 (srb->sense_buf[12] == 0x3a))
958 return -1;
959 mdelay(100);
960 } while (retries--);
961
962 return -1;
963 }
964
965 static int usb_read_capacity(ccb *srb, struct us_data *ss)
966 {
967 int retry;
968 /* XXX retries */
969 retry = 3;
970 do {
971 memset(&srb->cmd[0], 0, 12);
972 srb->cmd[0] = SCSI_RD_CAPAC;
973 srb->cmd[1] = srb->lun << 5;
974 srb->datalen = 8;
975 srb->cmdlen = 12;
976 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
977 return 0;
978 } while (retry--);
979
980 return -1;
981 }
982
983 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
984 unsigned short blocks)
985 {
986 memset(&srb->cmd[0], 0, 12);
987 srb->cmd[0] = SCSI_READ10;
988 srb->cmd[1] = srb->lun << 5;
989 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
990 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
991 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
992 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
993 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
994 srb->cmd[8] = (unsigned char) blocks & 0xff;
995 srb->cmdlen = 12;
996 debug("read10: start %lx blocks %x\n", start, blocks);
997 return ss->transport(srb, ss);
998 }
999
1000 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
1001 unsigned short blocks)
1002 {
1003 memset(&srb->cmd[0], 0, 12);
1004 srb->cmd[0] = SCSI_WRITE10;
1005 srb->cmd[1] = srb->lun << 5;
1006 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1007 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1008 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1009 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1010 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1011 srb->cmd[8] = (unsigned char) blocks & 0xff;
1012 srb->cmdlen = 12;
1013 debug("write10: start %lx blocks %x\n", start, blocks);
1014 return ss->transport(srb, ss);
1015 }
1016
1017
1018 #ifdef CONFIG_USB_BIN_FIXUP
1019 /*
1020 * Some USB storage devices queried for SCSI identification data respond with
1021 * binary strings, which if output to the console freeze the terminal. The
1022 * workaround is to modify the vendor and product strings read from such
1023 * device with proper values (as reported by 'usb info').
1024 *
1025 * Vendor and product length limits are taken from the definition of
1026 * block_dev_desc_t in include/part.h.
1027 */
1028 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1029 unsigned char vendor[],
1030 unsigned char product[]) {
1031 const unsigned char max_vendor_len = 40;
1032 const unsigned char max_product_len = 20;
1033 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1034 strncpy((char *)vendor, "SMSC", max_vendor_len);
1035 strncpy((char *)product, "Flash Media Cntrller",
1036 max_product_len);
1037 }
1038 }
1039 #endif /* CONFIG_USB_BIN_FIXUP */
1040
1041 unsigned long usb_stor_read(int device, lbaint_t blknr,
1042 lbaint_t blkcnt, void *buffer)
1043 {
1044 lbaint_t start, blks;
1045 uintptr_t buf_addr;
1046 unsigned short smallblks;
1047 struct usb_device *dev;
1048 struct us_data *ss;
1049 int retry, i;
1050 ccb *srb = &usb_ccb;
1051
1052 if (blkcnt == 0)
1053 return 0;
1054
1055 device &= 0xff;
1056 /* Setup device */
1057 debug("\nusb_read: dev %d \n", device);
1058 dev = NULL;
1059 for (i = 0; i < USB_MAX_DEVICE; i++) {
1060 dev = usb_get_dev_index(i);
1061 if (dev == NULL)
1062 return 0;
1063 if (dev->devnum == usb_dev_desc[device].target)
1064 break;
1065 }
1066 ss = (struct us_data *)dev->privptr;
1067
1068 usb_disable_asynch(1); /* asynch transfer not allowed */
1069 srb->lun = usb_dev_desc[device].lun;
1070 buf_addr = (unsigned long)buffer;
1071 start = blknr;
1072 blks = blkcnt;
1073
1074 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF
1075 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr);
1076
1077 do {
1078 /* XXX need some comment here */
1079 retry = 2;
1080 srb->pdata = (unsigned char *)buf_addr;
1081 if (blks > USB_MAX_XFER_BLK)
1082 smallblks = USB_MAX_XFER_BLK;
1083 else
1084 smallblks = (unsigned short) blks;
1085 retry_it:
1086 if (smallblks == USB_MAX_XFER_BLK)
1087 usb_show_progress();
1088 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1089 srb->pdata = (unsigned char *)buf_addr;
1090 if (usb_read_10(srb, ss, start, smallblks)) {
1091 debug("Read ERROR\n");
1092 usb_request_sense(srb, ss);
1093 if (retry--)
1094 goto retry_it;
1095 blkcnt -= blks;
1096 break;
1097 }
1098 start += smallblks;
1099 blks -= smallblks;
1100 buf_addr += srb->datalen;
1101 } while (blks != 0);
1102 ss->flags &= ~USB_READY;
1103
1104 debug("usb_read: end startblk " LBAF
1105 ", blccnt %x buffer %" PRIxPTR "\n",
1106 start, smallblks, buf_addr);
1107
1108 usb_disable_asynch(0); /* asynch transfer allowed */
1109 if (blkcnt >= USB_MAX_XFER_BLK)
1110 debug("\n");
1111 return blkcnt;
1112 }
1113
1114 unsigned long usb_stor_write(int device, lbaint_t blknr,
1115 lbaint_t blkcnt, const void *buffer)
1116 {
1117 lbaint_t start, blks;
1118 uintptr_t buf_addr;
1119 unsigned short smallblks;
1120 struct usb_device *dev;
1121 struct us_data *ss;
1122 int retry, i;
1123 ccb *srb = &usb_ccb;
1124
1125 if (blkcnt == 0)
1126 return 0;
1127
1128 device &= 0xff;
1129 /* Setup device */
1130 debug("\nusb_write: dev %d \n", device);
1131 dev = NULL;
1132 for (i = 0; i < USB_MAX_DEVICE; i++) {
1133 dev = usb_get_dev_index(i);
1134 if (dev == NULL)
1135 return 0;
1136 if (dev->devnum == usb_dev_desc[device].target)
1137 break;
1138 }
1139 ss = (struct us_data *)dev->privptr;
1140
1141 usb_disable_asynch(1); /* asynch transfer not allowed */
1142
1143 srb->lun = usb_dev_desc[device].lun;
1144 buf_addr = (unsigned long)buffer;
1145 start = blknr;
1146 blks = blkcnt;
1147
1148 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF
1149 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr);
1150
1151 do {
1152 /* If write fails retry for max retry count else
1153 * return with number of blocks written successfully.
1154 */
1155 retry = 2;
1156 srb->pdata = (unsigned char *)buf_addr;
1157 if (blks > USB_MAX_XFER_BLK)
1158 smallblks = USB_MAX_XFER_BLK;
1159 else
1160 smallblks = (unsigned short) blks;
1161 retry_it:
1162 if (smallblks == USB_MAX_XFER_BLK)
1163 usb_show_progress();
1164 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1165 srb->pdata = (unsigned char *)buf_addr;
1166 if (usb_write_10(srb, ss, start, smallblks)) {
1167 debug("Write ERROR\n");
1168 usb_request_sense(srb, ss);
1169 if (retry--)
1170 goto retry_it;
1171 blkcnt -= blks;
1172 break;
1173 }
1174 start += smallblks;
1175 blks -= smallblks;
1176 buf_addr += srb->datalen;
1177 } while (blks != 0);
1178 ss->flags &= ~USB_READY;
1179
1180 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %"
1181 PRIxPTR "\n", 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
1190 /* Probe to see if a new device is actually a Storage device */
1191 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1192 struct us_data *ss)
1193 {
1194 struct usb_interface *iface;
1195 int i;
1196 struct usb_endpoint_descriptor *ep_desc;
1197 unsigned int flags = 0;
1198
1199 int protocol = 0;
1200 int subclass = 0;
1201
1202 /* let's examine the device now */
1203 iface = &dev->config.if_desc[ifnum];
1204
1205 #if 0
1206 /* this is the place to patch some storage devices */
1207 debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1208 dev->descriptor.idProduct);
1209
1210 if ((dev->descriptor.idVendor) == 0x066b &&
1211 (dev->descriptor.idProduct) == 0x0103) {
1212 debug("patched for E-USB\n");
1213 protocol = US_PR_CB;
1214 subclass = US_SC_UFI; /* an assumption */
1215 }
1216 #endif
1217
1218 if (dev->descriptor.bDeviceClass != 0 ||
1219 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1220 iface->desc.bInterfaceSubClass < US_SC_MIN ||
1221 iface->desc.bInterfaceSubClass > US_SC_MAX) {
1222 /* if it's not a mass storage, we go no further */
1223 return 0;
1224 }
1225
1226 memset(ss, 0, sizeof(struct us_data));
1227
1228 /* At this point, we know we've got a live one */
1229 debug("\n\nUSB Mass Storage device detected\n");
1230
1231 /* Initialize the us_data structure with some useful info */
1232 ss->flags = flags;
1233 ss->ifnum = ifnum;
1234 ss->pusb_dev = dev;
1235 ss->attention_done = 0;
1236
1237 /* If the device has subclass and protocol, then use that. Otherwise,
1238 * take data from the specific interface.
1239 */
1240 if (subclass) {
1241 ss->subclass = subclass;
1242 ss->protocol = protocol;
1243 } else {
1244 ss->subclass = iface->desc.bInterfaceSubClass;
1245 ss->protocol = iface->desc.bInterfaceProtocol;
1246 }
1247
1248 /* set the handler pointers based on the protocol */
1249 debug("Transport: ");
1250 switch (ss->protocol) {
1251 case US_PR_CB:
1252 debug("Control/Bulk\n");
1253 ss->transport = usb_stor_CB_transport;
1254 ss->transport_reset = usb_stor_CB_reset;
1255 break;
1256
1257 case US_PR_CBI:
1258 debug("Control/Bulk/Interrupt\n");
1259 ss->transport = usb_stor_CB_transport;
1260 ss->transport_reset = usb_stor_CB_reset;
1261 break;
1262 case US_PR_BULK:
1263 debug("Bulk/Bulk/Bulk\n");
1264 ss->transport = usb_stor_BBB_transport;
1265 ss->transport_reset = usb_stor_BBB_reset;
1266 break;
1267 default:
1268 printf("USB Storage Transport unknown / not yet implemented\n");
1269 return 0;
1270 break;
1271 }
1272
1273 /*
1274 * We are expecting a minimum of 2 endpoints - in and out (bulk).
1275 * An optional interrupt is OK (necessary for CBI protocol).
1276 * We will ignore any others.
1277 */
1278 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1279 ep_desc = &iface->ep_desc[i];
1280 /* is it an BULK endpoint? */
1281 if ((ep_desc->bmAttributes &
1282 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1283 if (ep_desc->bEndpointAddress & USB_DIR_IN)
1284 ss->ep_in = ep_desc->bEndpointAddress &
1285 USB_ENDPOINT_NUMBER_MASK;
1286 else
1287 ss->ep_out =
1288 ep_desc->bEndpointAddress &
1289 USB_ENDPOINT_NUMBER_MASK;
1290 }
1291
1292 /* is it an interrupt endpoint? */
1293 if ((ep_desc->bmAttributes &
1294 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1295 ss->ep_int = ep_desc->bEndpointAddress &
1296 USB_ENDPOINT_NUMBER_MASK;
1297 ss->irqinterval = ep_desc->bInterval;
1298 }
1299 }
1300 debug("Endpoints In %d Out %d Int %d\n",
1301 ss->ep_in, ss->ep_out, ss->ep_int);
1302
1303 /* Do some basic sanity checks, and bail if we find a problem */
1304 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1305 !ss->ep_in || !ss->ep_out ||
1306 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1307 debug("Problems with device\n");
1308 return 0;
1309 }
1310 /* set class specific stuff */
1311 /* We only handle certain protocols. Currently, these are
1312 * the only ones.
1313 * The SFF8070 accepts the requests used in u-boot
1314 */
1315 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1316 ss->subclass != US_SC_8070) {
1317 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1318 return 0;
1319 }
1320 if (ss->ep_int) {
1321 /* we had found an interrupt endpoint, prepare irq pipe
1322 * set up the IRQ pipe and handler
1323 */
1324 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1325 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1326 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1327 dev->irq_handle = usb_stor_irq;
1328 }
1329 dev->privptr = (void *)ss;
1330 return 1;
1331 }
1332
1333 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1334 block_dev_desc_t *dev_desc)
1335 {
1336 unsigned char perq, modi;
1337 ALLOC_CACHE_ALIGN_BUFFER(unsigned long, cap, 2);
1338 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, usb_stor_buf, 36);
1339 unsigned long *capacity, *blksz;
1340 ccb *pccb = &usb_ccb;
1341
1342 pccb->pdata = usb_stor_buf;
1343
1344 dev_desc->target = dev->devnum;
1345 pccb->lun = dev_desc->lun;
1346 debug(" address %d\n", dev_desc->target);
1347
1348 if (usb_inquiry(pccb, ss))
1349 return -1;
1350
1351 perq = usb_stor_buf[0];
1352 modi = usb_stor_buf[1];
1353
1354 /*
1355 * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1356 * they would not respond to test_unit_ready .
1357 */
1358 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
1359 return 0;
1360 }
1361 if ((modi&0x80) == 0x80) {
1362 /* drive is removable */
1363 dev_desc->removable = 1;
1364 }
1365 memcpy(&dev_desc->vendor[0], (const void *) &usb_stor_buf[8], 8);
1366 memcpy(&dev_desc->product[0], (const void *) &usb_stor_buf[16], 16);
1367 memcpy(&dev_desc->revision[0], (const void *) &usb_stor_buf[32], 4);
1368 dev_desc->vendor[8] = 0;
1369 dev_desc->product[16] = 0;
1370 dev_desc->revision[4] = 0;
1371 #ifdef CONFIG_USB_BIN_FIXUP
1372 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1373 (uchar *)dev_desc->product);
1374 #endif /* CONFIG_USB_BIN_FIXUP */
1375 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1376 usb_stor_buf[3]);
1377 if (usb_test_unit_ready(pccb, ss)) {
1378 printf("Device NOT ready\n"
1379 " Request Sense returned %02X %02X %02X\n",
1380 pccb->sense_buf[2], pccb->sense_buf[12],
1381 pccb->sense_buf[13]);
1382 if (dev_desc->removable == 1) {
1383 dev_desc->type = perq;
1384 return 1;
1385 }
1386 return 0;
1387 }
1388 pccb->pdata = (unsigned char *)&cap[0];
1389 memset(pccb->pdata, 0, 8);
1390 if (usb_read_capacity(pccb, ss) != 0) {
1391 printf("READ_CAP ERROR\n");
1392 cap[0] = 2880;
1393 cap[1] = 0x200;
1394 }
1395 ss->flags &= ~USB_READY;
1396 debug("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0], cap[1]);
1397 #if 0
1398 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1399 cap[0] >>= 16;
1400 #endif
1401 cap[0] = cpu_to_be32(cap[0]);
1402 cap[1] = cpu_to_be32(cap[1]);
1403
1404 /* this assumes bigendian! */
1405 cap[0] += 1;
1406 capacity = &cap[0];
1407 blksz = &cap[1];
1408 debug("Capacity = 0x%lx, blocksz = 0x%lx\n", *capacity, *blksz);
1409 dev_desc->lba = *capacity;
1410 dev_desc->blksz = *blksz;
1411 dev_desc->log2blksz = LOG2(dev_desc->blksz);
1412 dev_desc->type = perq;
1413 debug(" address %d\n", dev_desc->target);
1414 debug("partype: %d\n", dev_desc->part_type);
1415
1416 init_part(dev_desc);
1417
1418 debug("partype: %d\n", dev_desc->part_type);
1419 return 1;
1420 }
"Das U-Boot" Source Tree