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[people/ms/u-boot.git] / common / usb_storage.c
1 /*
2 * Most of this source has been derived from the Linux USB
3 * project:
4 * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
5 * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org)
6 * (c) 1999 Michael Gee (michael@linuxspecific.com)
7 * (c) 2000 Yggdrasil Computing, Inc.
8 *
9 *
10 * Adapted for U-Boot:
11 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
12 *
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 static int usb_storage_register(struct usb_device *dev, unsigned char iface)
212 {
213 int lun, max_lun, start = usb_max_devs;
214 int nb_dev = 0;
215
216 if (!usb_storage_probe(dev, iface, &usb_stor[usb_max_devs]))
217 return nb_dev;
218
219 /*
220 * OK, it's a storage device. Iterate over its LUNs
221 * and populate `usb_dev_desc'.
222 */
223 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
224 for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; lun++) {
225 usb_dev_desc[usb_max_devs].lun = lun;
226 if (usb_stor_get_info(dev, &usb_stor[start],
227 &usb_dev_desc[usb_max_devs]) == 1) {
228 nb_dev++;
229 }
230 }
231
232 return nb_dev;
233 }
234
235 /*******************************************************************************
236 * scan the usb and reports device info
237 * to the user if mode = 1
238 * returns current device or -1 if no
239 */
240 int usb_stor_scan(int mode)
241 {
242 unsigned char i, iface;
243 struct usb_device *dev;
244
245 if (mode == 1)
246 printf(" scanning usb for storage devices... ");
247
248 usb_disable_asynch(1); /* asynch transfer not allowed */
249
250 for (i = 0; i < USB_MAX_STOR_DEV; i++) {
251 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
252 usb_dev_desc[i].if_type = IF_TYPE_USB;
253 usb_dev_desc[i].dev = i;
254 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
255 usb_dev_desc[i].target = 0xff;
256 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
257 usb_dev_desc[i].block_read = usb_stor_read;
258 usb_dev_desc[i].block_write = usb_stor_write;
259 }
260
261 usb_max_devs = 0;
262 for (i = 0; i < USB_MAX_DEVICE; i++) {
263 dev = usb_get_dev_index(i); /* get device */
264 debug("i=%d\n", i);
265 if (dev == NULL)
266 break; /* no more devices available */
267
268 for (iface = 0; iface < dev->config.no_of_if; iface++) {
269 usb_max_devs += usb_storage_register(dev, iface);
270 }
271
272 /* if storage device */
273 if (usb_max_devs == USB_MAX_STOR_DEV) {
274 printf("max USB Storage Device reached: %d stopping\n",
275 usb_max_devs);
276 break;
277 }
278 } /* for */
279
280 usb_disable_asynch(0); /* asynch transfer allowed */
281 printf("%d Storage Device(s) found\n", usb_max_devs);
282 if (usb_max_devs > 0)
283 return 0;
284 return -1;
285 }
286
287 static int usb_stor_irq(struct usb_device *dev)
288 {
289 struct us_data *us;
290 us = (struct us_data *)dev->privptr;
291
292 if (us->ip_wanted)
293 us->ip_wanted = 0;
294 return 0;
295 }
296
297
298 #ifdef DEBUG
299
300 static void usb_show_srb(ccb *pccb)
301 {
302 int i;
303 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
304 for (i = 0; i < 12; i++)
305 printf("%02X ", pccb->cmd[i]);
306 printf("\n");
307 }
308
309 static void display_int_status(unsigned long tmp)
310 {
311 printf("Status: %s %s %s %s %s %s %s\n",
312 (tmp & USB_ST_ACTIVE) ? "Active" : "",
313 (tmp & USB_ST_STALLED) ? "Stalled" : "",
314 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
315 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
316 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
317 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
318 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
319 }
320 #endif
321 /***********************************************************************
322 * Data transfer routines
323 ***********************************************************************/
324
325 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
326 {
327 int max_size;
328 int this_xfer;
329 int result;
330 int partial;
331 int maxtry;
332 int stat;
333
334 /* determine the maximum packet size for these transfers */
335 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
336
337 /* while we have data left to transfer */
338 while (length) {
339
340 /* calculate how long this will be -- maximum or a remainder */
341 this_xfer = length > max_size ? max_size : length;
342 length -= this_xfer;
343
344 /* setup the retry counter */
345 maxtry = 10;
346
347 /* set up the transfer loop */
348 do {
349 /* transfer the data */
350 debug("Bulk xfer %p(%d) try #%d\n",
351 buf, this_xfer, 11 - maxtry);
352 result = usb_bulk_msg(us->pusb_dev, pipe, buf,
353 this_xfer, &partial,
354 USB_CNTL_TIMEOUT * 5);
355 debug("bulk_msg returned %d xferred %d/%d\n",
356 result, partial, this_xfer);
357 if (us->pusb_dev->status != 0) {
358 /* if we stall, we need to clear it before
359 * we go on
360 */
361 #ifdef DEBUG
362 display_int_status(us->pusb_dev->status);
363 #endif
364 if (us->pusb_dev->status & USB_ST_STALLED) {
365 debug("stalled ->clearing endpoint" \
366 "halt for pipe 0x%x\n", pipe);
367 stat = us->pusb_dev->status;
368 usb_clear_halt(us->pusb_dev, pipe);
369 us->pusb_dev->status = stat;
370 if (this_xfer == partial) {
371 debug("bulk transferred" \
372 "with error %lX," \
373 " but data ok\n",
374 us->pusb_dev->status);
375 return 0;
376 }
377 else
378 return result;
379 }
380 if (us->pusb_dev->status & USB_ST_NAK_REC) {
381 debug("Device NAKed bulk_msg\n");
382 return result;
383 }
384 debug("bulk transferred with error");
385 if (this_xfer == partial) {
386 debug(" %ld, but data ok\n",
387 us->pusb_dev->status);
388 return 0;
389 }
390 /* if our try counter reaches 0, bail out */
391 debug(" %ld, data %d\n",
392 us->pusb_dev->status, partial);
393 if (!maxtry--)
394 return result;
395 }
396 /* update to show what data was transferred */
397 this_xfer -= partial;
398 buf += partial;
399 /* continue until this transfer is done */
400 } while (this_xfer);
401 }
402
403 /* if we get here, we're done and successful */
404 return 0;
405 }
406
407 static int usb_stor_BBB_reset(struct us_data *us)
408 {
409 int result;
410 unsigned int pipe;
411
412 /*
413 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
414 *
415 * For Reset Recovery the host shall issue in the following order:
416 * a) a Bulk-Only Mass Storage Reset
417 * b) a Clear Feature HALT to the Bulk-In endpoint
418 * c) a Clear Feature HALT to the Bulk-Out endpoint
419 *
420 * This is done in 3 steps.
421 *
422 * If the reset doesn't succeed, the device should be port reset.
423 *
424 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
425 */
426 debug("BBB_reset\n");
427 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
428 US_BBB_RESET,
429 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
430 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
431
432 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
433 debug("RESET:stall\n");
434 return -1;
435 }
436
437 /* long wait for reset */
438 mdelay(150);
439 debug("BBB_reset result %d: status %lX reset\n",
440 result, us->pusb_dev->status);
441 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
442 result = usb_clear_halt(us->pusb_dev, pipe);
443 /* long wait for reset */
444 mdelay(150);
445 debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
446 result, us->pusb_dev->status);
447 /* long wait for reset */
448 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
449 result = usb_clear_halt(us->pusb_dev, pipe);
450 mdelay(150);
451 debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
452 result, us->pusb_dev->status);
453 debug("BBB_reset done\n");
454 return 0;
455 }
456
457 /* FIXME: this reset function doesn't really reset the port, and it
458 * should. Actually it should probably do what it's doing here, and
459 * reset the port physically
460 */
461 static int usb_stor_CB_reset(struct us_data *us)
462 {
463 unsigned char cmd[12];
464 int result;
465
466 debug("CB_reset\n");
467 memset(cmd, 0xff, sizeof(cmd));
468 cmd[0] = SCSI_SEND_DIAG;
469 cmd[1] = 4;
470 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
471 US_CBI_ADSC,
472 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
473 0, us->ifnum, cmd, sizeof(cmd),
474 USB_CNTL_TIMEOUT * 5);
475
476 /* long wait for reset */
477 mdelay(1500);
478 debug("CB_reset result %d: status %lX clearing endpoint halt\n",
479 result, us->pusb_dev->status);
480 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
481 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
482
483 debug("CB_reset done\n");
484 return 0;
485 }
486
487 /*
488 * Set up the command for a BBB device. Note that the actual SCSI
489 * command is copied into cbw.CBWCDB.
490 */
491 static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
492 {
493 int result;
494 int actlen;
495 int dir_in;
496 unsigned int pipe;
497 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1);
498
499 dir_in = US_DIRECTION(srb->cmd[0]);
500
501 #ifdef BBB_COMDAT_TRACE
502 printf("dir %d lun %d cmdlen %d cmd %p datalen %lu pdata %p\n",
503 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
504 srb->pdata);
505 if (srb->cmdlen) {
506 for (result = 0; result < srb->cmdlen; result++)
507 printf("cmd[%d] %#x ", result, srb->cmd[result]);
508 printf("\n");
509 }
510 #endif
511 /* sanity checks */
512 if (!(srb->cmdlen <= CBWCDBLENGTH)) {
513 debug("usb_stor_BBB_comdat:cmdlen too large\n");
514 return -1;
515 }
516
517 /* always OUT to the ep */
518 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
519
520 cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
521 cbw->dCBWTag = cpu_to_le32(CBWTag++);
522 cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
523 cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
524 cbw->bCBWLUN = srb->lun;
525 cbw->bCDBLength = srb->cmdlen;
526 /* copy the command data into the CBW command data buffer */
527 /* DST SRC LEN!!! */
528
529 memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
530 result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
531 &actlen, USB_CNTL_TIMEOUT * 5);
532 if (result < 0)
533 debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
534 return result;
535 }
536
537 /* FIXME: we also need a CBI_command which sets up the completion
538 * interrupt, and waits for it
539 */
540 static int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
541 {
542 int result = 0;
543 int dir_in, retry;
544 unsigned int pipe;
545 unsigned long status;
546
547 retry = 5;
548 dir_in = US_DIRECTION(srb->cmd[0]);
549
550 if (dir_in)
551 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
552 else
553 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
554
555 while (retry--) {
556 debug("CBI gets a command: Try %d\n", 5 - retry);
557 #ifdef DEBUG
558 usb_show_srb(srb);
559 #endif
560 /* let's send the command via the control pipe */
561 result = usb_control_msg(us->pusb_dev,
562 usb_sndctrlpipe(us->pusb_dev , 0),
563 US_CBI_ADSC,
564 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
565 0, us->ifnum,
566 srb->cmd, srb->cmdlen,
567 USB_CNTL_TIMEOUT * 5);
568 debug("CB_transport: control msg returned %d, status %lX\n",
569 result, us->pusb_dev->status);
570 /* check the return code for the command */
571 if (result < 0) {
572 if (us->pusb_dev->status & USB_ST_STALLED) {
573 status = us->pusb_dev->status;
574 debug(" stall during command found," \
575 " clear pipe\n");
576 usb_clear_halt(us->pusb_dev,
577 usb_sndctrlpipe(us->pusb_dev, 0));
578 us->pusb_dev->status = status;
579 }
580 debug(" error during command %02X" \
581 " Stat = %lX\n", srb->cmd[0],
582 us->pusb_dev->status);
583 return result;
584 }
585 /* transfer the data payload for this command, if one exists*/
586
587 debug("CB_transport: control msg returned %d," \
588 " direction is %s to go 0x%lx\n", result,
589 dir_in ? "IN" : "OUT", srb->datalen);
590 if (srb->datalen) {
591 result = us_one_transfer(us, pipe, (char *)srb->pdata,
592 srb->datalen);
593 debug("CBI attempted to transfer data," \
594 " result is %d status %lX, len %d\n",
595 result, us->pusb_dev->status,
596 us->pusb_dev->act_len);
597 if (!(us->pusb_dev->status & USB_ST_NAK_REC))
598 break;
599 } /* if (srb->datalen) */
600 else
601 break;
602 }
603 /* return result */
604
605 return result;
606 }
607
608
609 static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
610 {
611 int timeout;
612
613 us->ip_wanted = 1;
614 submit_int_msg(us->pusb_dev, us->irqpipe,
615 (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
616 timeout = 1000;
617 while (timeout--) {
618 if (us->ip_wanted == 0)
619 break;
620 mdelay(10);
621 }
622 if (us->ip_wanted) {
623 printf(" Did not get interrupt on CBI\n");
624 us->ip_wanted = 0;
625 return USB_STOR_TRANSPORT_ERROR;
626 }
627 debug("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
628 us->ip_data, us->pusb_dev->irq_act_len,
629 us->pusb_dev->irq_status);
630 /* UFI gives us ASC and ASCQ, like a request sense */
631 if (us->subclass == US_SC_UFI) {
632 if (srb->cmd[0] == SCSI_REQ_SENSE ||
633 srb->cmd[0] == SCSI_INQUIRY)
634 return USB_STOR_TRANSPORT_GOOD; /* Good */
635 else if (us->ip_data)
636 return USB_STOR_TRANSPORT_FAILED;
637 else
638 return USB_STOR_TRANSPORT_GOOD;
639 }
640 /* otherwise, we interpret the data normally */
641 switch (us->ip_data) {
642 case 0x0001:
643 return USB_STOR_TRANSPORT_GOOD;
644 case 0x0002:
645 return USB_STOR_TRANSPORT_FAILED;
646 default:
647 return USB_STOR_TRANSPORT_ERROR;
648 } /* switch */
649 return USB_STOR_TRANSPORT_ERROR;
650 }
651
652 #define USB_TRANSPORT_UNKNOWN_RETRY 5
653 #define USB_TRANSPORT_NOT_READY_RETRY 10
654
655 /* clear a stall on an endpoint - special for BBB devices */
656 static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
657 {
658 int result;
659
660 /* ENDPOINT_HALT = 0, so set value to 0 */
661 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
662 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
663 0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
664 return result;
665 }
666
667 static int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
668 {
669 int result, retry;
670 int dir_in;
671 int actlen, data_actlen;
672 unsigned int pipe, pipein, pipeout;
673 ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1);
674 #ifdef BBB_XPORT_TRACE
675 unsigned char *ptr;
676 int index;
677 #endif
678
679 dir_in = US_DIRECTION(srb->cmd[0]);
680
681 /* COMMAND phase */
682 debug("COMMAND phase\n");
683 result = usb_stor_BBB_comdat(srb, us);
684 if (result < 0) {
685 debug("failed to send CBW status %ld\n",
686 us->pusb_dev->status);
687 usb_stor_BBB_reset(us);
688 return USB_STOR_TRANSPORT_FAILED;
689 }
690 if (!(us->flags & USB_READY))
691 mdelay(5);
692 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
693 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
694 /* DATA phase + error handling */
695 data_actlen = 0;
696 /* no data, go immediately to the STATUS phase */
697 if (srb->datalen == 0)
698 goto st;
699 debug("DATA phase\n");
700 if (dir_in)
701 pipe = pipein;
702 else
703 pipe = pipeout;
704
705 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
706 &data_actlen, USB_CNTL_TIMEOUT * 5);
707 /* special handling of STALL in DATA phase */
708 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
709 debug("DATA:stall\n");
710 /* clear the STALL on the endpoint */
711 result = usb_stor_BBB_clear_endpt_stall(us,
712 dir_in ? us->ep_in : us->ep_out);
713 if (result >= 0)
714 /* continue on to STATUS phase */
715 goto st;
716 }
717 if (result < 0) {
718 debug("usb_bulk_msg error status %ld\n",
719 us->pusb_dev->status);
720 usb_stor_BBB_reset(us);
721 return USB_STOR_TRANSPORT_FAILED;
722 }
723 #ifdef BBB_XPORT_TRACE
724 for (index = 0; index < data_actlen; index++)
725 printf("pdata[%d] %#x ", index, srb->pdata[index]);
726 printf("\n");
727 #endif
728 /* STATUS phase + error handling */
729 st:
730 retry = 0;
731 again:
732 debug("STATUS phase\n");
733 result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
734 &actlen, USB_CNTL_TIMEOUT*5);
735
736 /* special handling of STALL in STATUS phase */
737 if ((result < 0) && (retry < 1) &&
738 (us->pusb_dev->status & USB_ST_STALLED)) {
739 debug("STATUS:stall\n");
740 /* clear the STALL on the endpoint */
741 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
742 if (result >= 0 && (retry++ < 1))
743 /* do a retry */
744 goto again;
745 }
746 if (result < 0) {
747 debug("usb_bulk_msg error status %ld\n",
748 us->pusb_dev->status);
749 usb_stor_BBB_reset(us);
750 return USB_STOR_TRANSPORT_FAILED;
751 }
752 #ifdef BBB_XPORT_TRACE
753 ptr = (unsigned char *)csw;
754 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
755 printf("ptr[%d] %#x ", index, ptr[index]);
756 printf("\n");
757 #endif
758 /* misuse pipe to get the residue */
759 pipe = le32_to_cpu(csw->dCSWDataResidue);
760 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
761 pipe = srb->datalen - data_actlen;
762 if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
763 debug("!CSWSIGNATURE\n");
764 usb_stor_BBB_reset(us);
765 return USB_STOR_TRANSPORT_FAILED;
766 } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
767 debug("!Tag\n");
768 usb_stor_BBB_reset(us);
769 return USB_STOR_TRANSPORT_FAILED;
770 } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
771 debug(">PHASE\n");
772 usb_stor_BBB_reset(us);
773 return USB_STOR_TRANSPORT_FAILED;
774 } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
775 debug("=PHASE\n");
776 usb_stor_BBB_reset(us);
777 return USB_STOR_TRANSPORT_FAILED;
778 } else if (data_actlen > srb->datalen) {
779 debug("transferred %dB instead of %ldB\n",
780 data_actlen, srb->datalen);
781 return USB_STOR_TRANSPORT_FAILED;
782 } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
783 debug("FAILED\n");
784 return USB_STOR_TRANSPORT_FAILED;
785 }
786
787 return result;
788 }
789
790 static int usb_stor_CB_transport(ccb *srb, struct us_data *us)
791 {
792 int result, status;
793 ccb *psrb;
794 ccb reqsrb;
795 int retry, notready;
796
797 psrb = &reqsrb;
798 status = USB_STOR_TRANSPORT_GOOD;
799 retry = 0;
800 notready = 0;
801 /* issue the command */
802 do_retry:
803 result = usb_stor_CB_comdat(srb, us);
804 debug("command / Data returned %d, status %lX\n",
805 result, us->pusb_dev->status);
806 /* if this is an CBI Protocol, get IRQ */
807 if (us->protocol == US_PR_CBI) {
808 status = usb_stor_CBI_get_status(srb, us);
809 /* if the status is error, report it */
810 if (status == USB_STOR_TRANSPORT_ERROR) {
811 debug(" USB CBI Command Error\n");
812 return status;
813 }
814 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
815 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
816 if (!us->ip_data) {
817 /* if the status is good, report it */
818 if (status == USB_STOR_TRANSPORT_GOOD) {
819 debug(" USB CBI Command Good\n");
820 return status;
821 }
822 }
823 }
824 /* do we have to issue an auto request? */
825 /* HERE we have to check the result */
826 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
827 debug("ERROR %lX\n", us->pusb_dev->status);
828 us->transport_reset(us);
829 return USB_STOR_TRANSPORT_ERROR;
830 }
831 if ((us->protocol == US_PR_CBI) &&
832 ((srb->cmd[0] == SCSI_REQ_SENSE) ||
833 (srb->cmd[0] == SCSI_INQUIRY))) {
834 /* do not issue an autorequest after request sense */
835 debug("No auto request and good\n");
836 return USB_STOR_TRANSPORT_GOOD;
837 }
838 /* issue an request_sense */
839 memset(&psrb->cmd[0], 0, 12);
840 psrb->cmd[0] = SCSI_REQ_SENSE;
841 psrb->cmd[1] = srb->lun << 5;
842 psrb->cmd[4] = 18;
843 psrb->datalen = 18;
844 psrb->pdata = &srb->sense_buf[0];
845 psrb->cmdlen = 12;
846 /* issue the command */
847 result = usb_stor_CB_comdat(psrb, us);
848 debug("auto request returned %d\n", result);
849 /* if this is an CBI Protocol, get IRQ */
850 if (us->protocol == US_PR_CBI)
851 status = usb_stor_CBI_get_status(psrb, us);
852
853 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
854 debug(" AUTO REQUEST ERROR %ld\n",
855 us->pusb_dev->status);
856 return USB_STOR_TRANSPORT_ERROR;
857 }
858 debug("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
859 srb->sense_buf[0], srb->sense_buf[2],
860 srb->sense_buf[12], srb->sense_buf[13]);
861 /* Check the auto request result */
862 if ((srb->sense_buf[2] == 0) &&
863 (srb->sense_buf[12] == 0) &&
864 (srb->sense_buf[13] == 0)) {
865 /* ok, no sense */
866 return USB_STOR_TRANSPORT_GOOD;
867 }
868
869 /* Check the auto request result */
870 switch (srb->sense_buf[2]) {
871 case 0x01:
872 /* Recovered Error */
873 return USB_STOR_TRANSPORT_GOOD;
874 break;
875 case 0x02:
876 /* Not Ready */
877 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
878 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
879 " 0x%02X (NOT READY)\n", srb->cmd[0],
880 srb->sense_buf[0], srb->sense_buf[2],
881 srb->sense_buf[12], srb->sense_buf[13]);
882 return USB_STOR_TRANSPORT_FAILED;
883 } else {
884 mdelay(100);
885 goto do_retry;
886 }
887 break;
888 default:
889 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
890 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
891 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
892 srb->sense_buf[2], srb->sense_buf[12],
893 srb->sense_buf[13]);
894 return USB_STOR_TRANSPORT_FAILED;
895 } else
896 goto do_retry;
897 break;
898 }
899 return USB_STOR_TRANSPORT_FAILED;
900 }
901
902
903 static int usb_inquiry(ccb *srb, struct us_data *ss)
904 {
905 int retry, i;
906 retry = 5;
907 do {
908 memset(&srb->cmd[0], 0, 12);
909 srb->cmd[0] = SCSI_INQUIRY;
910 srb->cmd[1] = srb->lun << 5;
911 srb->cmd[4] = 36;
912 srb->datalen = 36;
913 srb->cmdlen = 12;
914 i = ss->transport(srb, ss);
915 debug("inquiry returns %d\n", i);
916 if (i == 0)
917 break;
918 } while (--retry);
919
920 if (!retry) {
921 printf("error in inquiry\n");
922 return -1;
923 }
924 return 0;
925 }
926
927 static int usb_request_sense(ccb *srb, struct us_data *ss)
928 {
929 char *ptr;
930
931 ptr = (char *)srb->pdata;
932 memset(&srb->cmd[0], 0, 12);
933 srb->cmd[0] = SCSI_REQ_SENSE;
934 srb->cmd[1] = srb->lun << 5;
935 srb->cmd[4] = 18;
936 srb->datalen = 18;
937 srb->pdata = &srb->sense_buf[0];
938 srb->cmdlen = 12;
939 ss->transport(srb, ss);
940 debug("Request Sense returned %02X %02X %02X\n",
941 srb->sense_buf[2], srb->sense_buf[12],
942 srb->sense_buf[13]);
943 srb->pdata = (uchar *)ptr;
944 return 0;
945 }
946
947 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
948 {
949 int retries = 10;
950
951 do {
952 memset(&srb->cmd[0], 0, 12);
953 srb->cmd[0] = SCSI_TST_U_RDY;
954 srb->cmd[1] = srb->lun << 5;
955 srb->datalen = 0;
956 srb->cmdlen = 12;
957 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) {
958 ss->flags |= USB_READY;
959 return 0;
960 }
961 usb_request_sense(srb, ss);
962 /*
963 * Check the Key Code Qualifier, if it matches
964 * "Not Ready - medium not present"
965 * (the sense Key equals 0x2 and the ASC is 0x3a)
966 * return immediately as the medium being absent won't change
967 * unless there is a user action.
968 */
969 if ((srb->sense_buf[2] == 0x02) &&
970 (srb->sense_buf[12] == 0x3a))
971 return -1;
972 mdelay(100);
973 } while (retries--);
974
975 return -1;
976 }
977
978 static int usb_read_capacity(ccb *srb, struct us_data *ss)
979 {
980 int retry;
981 /* XXX retries */
982 retry = 3;
983 do {
984 memset(&srb->cmd[0], 0, 12);
985 srb->cmd[0] = SCSI_RD_CAPAC;
986 srb->cmd[1] = srb->lun << 5;
987 srb->datalen = 8;
988 srb->cmdlen = 12;
989 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
990 return 0;
991 } while (retry--);
992
993 return -1;
994 }
995
996 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
997 unsigned short blocks)
998 {
999 memset(&srb->cmd[0], 0, 12);
1000 srb->cmd[0] = SCSI_READ10;
1001 srb->cmd[1] = srb->lun << 5;
1002 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1003 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1004 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1005 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1006 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1007 srb->cmd[8] = (unsigned char) blocks & 0xff;
1008 srb->cmdlen = 12;
1009 debug("read10: start %lx blocks %x\n", start, blocks);
1010 return ss->transport(srb, ss);
1011 }
1012
1013 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
1014 unsigned short blocks)
1015 {
1016 memset(&srb->cmd[0], 0, 12);
1017 srb->cmd[0] = SCSI_WRITE10;
1018 srb->cmd[1] = srb->lun << 5;
1019 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1020 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1021 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1022 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1023 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1024 srb->cmd[8] = (unsigned char) blocks & 0xff;
1025 srb->cmdlen = 12;
1026 debug("write10: start %lx blocks %x\n", start, blocks);
1027 return ss->transport(srb, ss);
1028 }
1029
1030
1031 #ifdef CONFIG_USB_BIN_FIXUP
1032 /*
1033 * Some USB storage devices queried for SCSI identification data respond with
1034 * binary strings, which if output to the console freeze the terminal. The
1035 * workaround is to modify the vendor and product strings read from such
1036 * device with proper values (as reported by 'usb info').
1037 *
1038 * Vendor and product length limits are taken from the definition of
1039 * block_dev_desc_t in include/part.h.
1040 */
1041 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1042 unsigned char vendor[],
1043 unsigned char product[]) {
1044 const unsigned char max_vendor_len = 40;
1045 const unsigned char max_product_len = 20;
1046 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1047 strncpy((char *)vendor, "SMSC", max_vendor_len);
1048 strncpy((char *)product, "Flash Media Cntrller",
1049 max_product_len);
1050 }
1051 }
1052 #endif /* CONFIG_USB_BIN_FIXUP */
1053
1054 unsigned long usb_stor_read(int device, lbaint_t blknr,
1055 lbaint_t blkcnt, void *buffer)
1056 {
1057 lbaint_t start, blks;
1058 uintptr_t buf_addr;
1059 unsigned short smallblks;
1060 struct usb_device *dev;
1061 struct us_data *ss;
1062 int retry, i;
1063 ccb *srb = &usb_ccb;
1064
1065 if (blkcnt == 0)
1066 return 0;
1067
1068 device &= 0xff;
1069 /* Setup device */
1070 debug("\nusb_read: dev %d \n", device);
1071 dev = NULL;
1072 for (i = 0; i < USB_MAX_DEVICE; i++) {
1073 dev = usb_get_dev_index(i);
1074 if (dev == NULL)
1075 return 0;
1076 if (dev->devnum == usb_dev_desc[device].target)
1077 break;
1078 }
1079 ss = (struct us_data *)dev->privptr;
1080
1081 usb_disable_asynch(1); /* asynch transfer not allowed */
1082 srb->lun = usb_dev_desc[device].lun;
1083 buf_addr = (uintptr_t)buffer;
1084 start = blknr;
1085 blks = blkcnt;
1086
1087 debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF
1088 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr);
1089
1090 do {
1091 /* XXX need some comment here */
1092 retry = 2;
1093 srb->pdata = (unsigned char *)buf_addr;
1094 if (blks > USB_MAX_XFER_BLK)
1095 smallblks = USB_MAX_XFER_BLK;
1096 else
1097 smallblks = (unsigned short) blks;
1098 retry_it:
1099 if (smallblks == USB_MAX_XFER_BLK)
1100 usb_show_progress();
1101 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1102 srb->pdata = (unsigned char *)buf_addr;
1103 if (usb_read_10(srb, ss, start, smallblks)) {
1104 debug("Read ERROR\n");
1105 usb_request_sense(srb, ss);
1106 if (retry--)
1107 goto retry_it;
1108 blkcnt -= blks;
1109 break;
1110 }
1111 start += smallblks;
1112 blks -= smallblks;
1113 buf_addr += srb->datalen;
1114 } while (blks != 0);
1115 ss->flags &= ~USB_READY;
1116
1117 debug("usb_read: end startblk " LBAF
1118 ", blccnt %x buffer %" PRIxPTR "\n",
1119 start, smallblks, buf_addr);
1120
1121 usb_disable_asynch(0); /* asynch transfer allowed */
1122 if (blkcnt >= USB_MAX_XFER_BLK)
1123 debug("\n");
1124 return blkcnt;
1125 }
1126
1127 unsigned long usb_stor_write(int device, lbaint_t blknr,
1128 lbaint_t blkcnt, const void *buffer)
1129 {
1130 lbaint_t start, blks;
1131 uintptr_t buf_addr;
1132 unsigned short smallblks;
1133 struct usb_device *dev;
1134 struct us_data *ss;
1135 int retry, i;
1136 ccb *srb = &usb_ccb;
1137
1138 if (blkcnt == 0)
1139 return 0;
1140
1141 device &= 0xff;
1142 /* Setup device */
1143 debug("\nusb_write: dev %d \n", device);
1144 dev = NULL;
1145 for (i = 0; i < USB_MAX_DEVICE; i++) {
1146 dev = usb_get_dev_index(i);
1147 if (dev == NULL)
1148 return 0;
1149 if (dev->devnum == usb_dev_desc[device].target)
1150 break;
1151 }
1152 ss = (struct us_data *)dev->privptr;
1153
1154 usb_disable_asynch(1); /* asynch transfer not allowed */
1155
1156 srb->lun = usb_dev_desc[device].lun;
1157 buf_addr = (uintptr_t)buffer;
1158 start = blknr;
1159 blks = blkcnt;
1160
1161 debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF
1162 " buffer %" PRIxPTR "\n", device, start, blks, buf_addr);
1163
1164 do {
1165 /* If write fails retry for max retry count else
1166 * return with number of blocks written successfully.
1167 */
1168 retry = 2;
1169 srb->pdata = (unsigned char *)buf_addr;
1170 if (blks > USB_MAX_XFER_BLK)
1171 smallblks = USB_MAX_XFER_BLK;
1172 else
1173 smallblks = (unsigned short) blks;
1174 retry_it:
1175 if (smallblks == USB_MAX_XFER_BLK)
1176 usb_show_progress();
1177 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1178 srb->pdata = (unsigned char *)buf_addr;
1179 if (usb_write_10(srb, ss, start, smallblks)) {
1180 debug("Write ERROR\n");
1181 usb_request_sense(srb, ss);
1182 if (retry--)
1183 goto retry_it;
1184 blkcnt -= blks;
1185 break;
1186 }
1187 start += smallblks;
1188 blks -= smallblks;
1189 buf_addr += srb->datalen;
1190 } while (blks != 0);
1191 ss->flags &= ~USB_READY;
1192
1193 debug("usb_write: end startblk " LBAF ", blccnt %x buffer %"
1194 PRIxPTR "\n", start, smallblks, buf_addr);
1195
1196 usb_disable_asynch(0); /* asynch transfer allowed */
1197 if (blkcnt >= USB_MAX_XFER_BLK)
1198 debug("\n");
1199 return blkcnt;
1200
1201 }
1202
1203 /* Probe to see if a new device is actually a Storage device */
1204 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1205 struct us_data *ss)
1206 {
1207 struct usb_interface *iface;
1208 int i;
1209 struct usb_endpoint_descriptor *ep_desc;
1210 unsigned int flags = 0;
1211
1212 int protocol = 0;
1213 int subclass = 0;
1214
1215 /* let's examine the device now */
1216 iface = &dev->config.if_desc[ifnum];
1217
1218 #if 0
1219 /* this is the place to patch some storage devices */
1220 debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1221 dev->descriptor.idProduct);
1222
1223 if ((dev->descriptor.idVendor) == 0x066b &&
1224 (dev->descriptor.idProduct) == 0x0103) {
1225 debug("patched for E-USB\n");
1226 protocol = US_PR_CB;
1227 subclass = US_SC_UFI; /* an assumption */
1228 }
1229 #endif
1230
1231 if (dev->descriptor.bDeviceClass != 0 ||
1232 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1233 iface->desc.bInterfaceSubClass < US_SC_MIN ||
1234 iface->desc.bInterfaceSubClass > US_SC_MAX) {
1235 /* if it's not a mass storage, we go no further */
1236 return 0;
1237 }
1238
1239 memset(ss, 0, sizeof(struct us_data));
1240
1241 /* At this point, we know we've got a live one */
1242 debug("\n\nUSB Mass Storage device detected\n");
1243
1244 /* Initialize the us_data structure with some useful info */
1245 ss->flags = flags;
1246 ss->ifnum = ifnum;
1247 ss->pusb_dev = dev;
1248 ss->attention_done = 0;
1249
1250 /* If the device has subclass and protocol, then use that. Otherwise,
1251 * take data from the specific interface.
1252 */
1253 if (subclass) {
1254 ss->subclass = subclass;
1255 ss->protocol = protocol;
1256 } else {
1257 ss->subclass = iface->desc.bInterfaceSubClass;
1258 ss->protocol = iface->desc.bInterfaceProtocol;
1259 }
1260
1261 /* set the handler pointers based on the protocol */
1262 debug("Transport: ");
1263 switch (ss->protocol) {
1264 case US_PR_CB:
1265 debug("Control/Bulk\n");
1266 ss->transport = usb_stor_CB_transport;
1267 ss->transport_reset = usb_stor_CB_reset;
1268 break;
1269
1270 case US_PR_CBI:
1271 debug("Control/Bulk/Interrupt\n");
1272 ss->transport = usb_stor_CB_transport;
1273 ss->transport_reset = usb_stor_CB_reset;
1274 break;
1275 case US_PR_BULK:
1276 debug("Bulk/Bulk/Bulk\n");
1277 ss->transport = usb_stor_BBB_transport;
1278 ss->transport_reset = usb_stor_BBB_reset;
1279 break;
1280 default:
1281 printf("USB Storage Transport unknown / not yet implemented\n");
1282 return 0;
1283 break;
1284 }
1285
1286 /*
1287 * We are expecting a minimum of 2 endpoints - in and out (bulk).
1288 * An optional interrupt is OK (necessary for CBI protocol).
1289 * We will ignore any others.
1290 */
1291 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1292 ep_desc = &iface->ep_desc[i];
1293 /* is it an BULK endpoint? */
1294 if ((ep_desc->bmAttributes &
1295 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1296 if (ep_desc->bEndpointAddress & USB_DIR_IN)
1297 ss->ep_in = ep_desc->bEndpointAddress &
1298 USB_ENDPOINT_NUMBER_MASK;
1299 else
1300 ss->ep_out =
1301 ep_desc->bEndpointAddress &
1302 USB_ENDPOINT_NUMBER_MASK;
1303 }
1304
1305 /* is it an interrupt endpoint? */
1306 if ((ep_desc->bmAttributes &
1307 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1308 ss->ep_int = ep_desc->bEndpointAddress &
1309 USB_ENDPOINT_NUMBER_MASK;
1310 ss->irqinterval = ep_desc->bInterval;
1311 }
1312 }
1313 debug("Endpoints In %d Out %d Int %d\n",
1314 ss->ep_in, ss->ep_out, ss->ep_int);
1315
1316 /* Do some basic sanity checks, and bail if we find a problem */
1317 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1318 !ss->ep_in || !ss->ep_out ||
1319 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1320 debug("Problems with device\n");
1321 return 0;
1322 }
1323 /* set class specific stuff */
1324 /* We only handle certain protocols. Currently, these are
1325 * the only ones.
1326 * The SFF8070 accepts the requests used in u-boot
1327 */
1328 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1329 ss->subclass != US_SC_8070) {
1330 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1331 return 0;
1332 }
1333 if (ss->ep_int) {
1334 /* we had found an interrupt endpoint, prepare irq pipe
1335 * set up the IRQ pipe and handler
1336 */
1337 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1338 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1339 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1340 dev->irq_handle = usb_stor_irq;
1341 }
1342 dev->privptr = (void *)ss;
1343 return 1;
1344 }
1345
1346 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1347 block_dev_desc_t *dev_desc)
1348 {
1349 unsigned char perq, modi;
1350 ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2);
1351 ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36);
1352 u32 capacity, blksz;
1353 ccb *pccb = &usb_ccb;
1354
1355 pccb->pdata = usb_stor_buf;
1356
1357 dev_desc->target = dev->devnum;
1358 pccb->lun = dev_desc->lun;
1359 debug(" address %d\n", dev_desc->target);
1360
1361 if (usb_inquiry(pccb, ss))
1362 return -1;
1363
1364 perq = usb_stor_buf[0];
1365 modi = usb_stor_buf[1];
1366
1367 /*
1368 * Skip unknown devices (0x1f) and enclosure service devices (0x0d),
1369 * they would not respond to test_unit_ready .
1370 */
1371 if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
1372 return 0;
1373 }
1374 if ((modi&0x80) == 0x80) {
1375 /* drive is removable */
1376 dev_desc->removable = 1;
1377 }
1378 memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8);
1379 memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16);
1380 memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4);
1381 dev_desc->vendor[8] = 0;
1382 dev_desc->product[16] = 0;
1383 dev_desc->revision[4] = 0;
1384 #ifdef CONFIG_USB_BIN_FIXUP
1385 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1386 (uchar *)dev_desc->product);
1387 #endif /* CONFIG_USB_BIN_FIXUP */
1388 debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1389 usb_stor_buf[3]);
1390 if (usb_test_unit_ready(pccb, ss)) {
1391 printf("Device NOT ready\n"
1392 " Request Sense returned %02X %02X %02X\n",
1393 pccb->sense_buf[2], pccb->sense_buf[12],
1394 pccb->sense_buf[13]);
1395 if (dev_desc->removable == 1) {
1396 dev_desc->type = perq;
1397 return 1;
1398 }
1399 return 0;
1400 }
1401 pccb->pdata = (unsigned char *)cap;
1402 memset(pccb->pdata, 0, 8);
1403 if (usb_read_capacity(pccb, ss) != 0) {
1404 printf("READ_CAP ERROR\n");
1405 cap[0] = 2880;
1406 cap[1] = 0x200;
1407 }
1408 ss->flags &= ~USB_READY;
1409 debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]);
1410 #if 0
1411 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1412 cap[0] >>= 16;
1413
1414 cap[0] = cpu_to_be32(cap[0]);
1415 cap[1] = cpu_to_be32(cap[1]);
1416 #endif
1417
1418 capacity = be32_to_cpu(cap[0]) + 1;
1419 blksz = be32_to_cpu(cap[1]);
1420
1421 debug("Capacity = 0x%08x, blocksz = 0x%08x\n", capacity, blksz);
1422 dev_desc->lba = capacity;
1423 dev_desc->blksz = blksz;
1424 dev_desc->log2blksz = LOG2(dev_desc->blksz);
1425 dev_desc->type = perq;
1426 debug(" address %d\n", dev_desc->target);
1427 debug("partype: %d\n", dev_desc->part_type);
1428
1429 init_part(dev_desc);
1430
1431 debug("partype: %d\n", dev_desc->part_type);
1432 return 1;
1433 }
"Das U-Boot" Source Tree