]> 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
Add cmd_process() to process commands in one place
[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 * See file CREDITS for list of people who contributed to this
20 * project.
21 *
22 * This program is free software; you can redistribute it and/or
23 * modify it under the terms of the GNU General Public License as
24 * published by the Free Software Foundation; either version 2 of
25 * the License, or (at your option) any later version.
26 *
27 * This program is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU General Public License for more details.
31 *
32 * You should have received a copy of the GNU General Public License
33 * along with this program; if not, write to the Free Software
34 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
35 * MA 02111-1307 USA
36 *
37 */
38
39 /* Note:
40 * Currently only the CBI transport protocoll has been implemented, and it
41 * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
42 * transport protocoll may work as well.
43 */
44 /*
45 * New Note:
46 * Support for USB Mass Storage Devices (BBB) has been added. It has
47 * only been tested with USB memory sticks.
48 */
49
50
51 #include <common.h>
52 #include <command.h>
53 #include <asm/byteorder.h>
54 #include <asm/processor.h>
55
56 #include <part.h>
57 #include <usb.h>
58
59 #undef BBB_COMDAT_TRACE
60 #undef BBB_XPORT_TRACE
61
62 #ifdef USB_STOR_DEBUG
63 #define USB_BLK_DEBUG 1
64 #else
65 #define USB_BLK_DEBUG 0
66 #endif
67
68 #define USB_STOR_PRINTF(fmt, args...) debug_cond(USB_BLK_DEBUG, fmt, ##args)
69
70 #include <scsi.h>
71 /* direction table -- this indicates the direction of the data
72 * transfer for each command code -- a 1 indicates input
73 */
74 static const unsigned char us_direction[256/8] = {
75 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
76 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
77 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
78 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
79 };
80 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
81
82 static unsigned char usb_stor_buf[512];
83 static ccb usb_ccb;
84
85 /*
86 * CBI style
87 */
88
89 #define US_CBI_ADSC 0
90
91 /*
92 * BULK only
93 */
94 #define US_BBB_RESET 0xff
95 #define US_BBB_GET_MAX_LUN 0xfe
96
97 /* Command Block Wrapper */
98 typedef struct {
99 __u32 dCBWSignature;
100 # define CBWSIGNATURE 0x43425355
101 __u32 dCBWTag;
102 __u32 dCBWDataTransferLength;
103 __u8 bCBWFlags;
104 # define CBWFLAGS_OUT 0x00
105 # define CBWFLAGS_IN 0x80
106 __u8 bCBWLUN;
107 __u8 bCDBLength;
108 # define CBWCDBLENGTH 16
109 __u8 CBWCDB[CBWCDBLENGTH];
110 } umass_bbb_cbw_t;
111 #define UMASS_BBB_CBW_SIZE 31
112 static __u32 CBWTag;
113
114 /* Command Status Wrapper */
115 typedef struct {
116 __u32 dCSWSignature;
117 # define CSWSIGNATURE 0x53425355
118 __u32 dCSWTag;
119 __u32 dCSWDataResidue;
120 __u8 bCSWStatus;
121 # define CSWSTATUS_GOOD 0x0
122 # define CSWSTATUS_FAILED 0x1
123 # define CSWSTATUS_PHASE 0x2
124 } umass_bbb_csw_t;
125 #define UMASS_BBB_CSW_SIZE 13
126
127 #define USB_MAX_STOR_DEV 5
128 static int usb_max_devs; /* number of highest available usb device */
129
130 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
131
132 struct us_data;
133 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data);
134 typedef int (*trans_reset)(struct us_data *data);
135
136 struct us_data {
137 struct usb_device *pusb_dev; /* this usb_device */
138
139 unsigned int flags; /* from filter initially */
140 unsigned char ifnum; /* interface number */
141 unsigned char ep_in; /* in endpoint */
142 unsigned char ep_out; /* out ....... */
143 unsigned char ep_int; /* interrupt . */
144 unsigned char subclass; /* as in overview */
145 unsigned char protocol; /* .............. */
146 unsigned char attention_done; /* force attn on first cmd */
147 unsigned short ip_data; /* interrupt data */
148 int action; /* what to do */
149 int ip_wanted; /* needed */
150 int *irq_handle; /* for USB int requests */
151 unsigned int irqpipe; /* pipe for release_irq */
152 unsigned char irqmaxp; /* max packed for irq Pipe */
153 unsigned char irqinterval; /* Intervall for IRQ Pipe */
154 unsigned long max_xfer_blk; /* Max blocks per xfer */
155 ccb *srb; /* current srb */
156 trans_reset transport_reset; /* reset routine */
157 trans_cmnd transport; /* transport routine */
158 };
159
160 static struct us_data usb_stor[USB_MAX_STOR_DEV];
161
162
163 #define USB_STOR_TRANSPORT_GOOD 0
164 #define USB_STOR_TRANSPORT_FAILED -1
165 #define USB_STOR_TRANSPORT_ERROR -2
166
167 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
168 block_dev_desc_t *dev_desc);
169 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
170 struct us_data *ss);
171 unsigned long usb_stor_read(int device, unsigned long blknr,
172 unsigned long blkcnt, void *buffer);
173 unsigned long usb_stor_write(int device, unsigned long blknr,
174 unsigned long blkcnt, const void *buffer);
175 struct usb_device * usb_get_dev_index(int index);
176 void uhci_show_temp_int_td(void);
177
178 #ifdef CONFIG_PARTITIONS
179 block_dev_desc_t *usb_stor_get_dev(int index)
180 {
181 return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
182 }
183 #endif
184
185 void usb_show_progress(void)
186 {
187 debug(".");
188 }
189
190 /*******************************************************************************
191 * show info on storage devices; 'usb start/init' must be invoked earlier
192 * as we only retrieve structures populated during devices initialization
193 */
194 int usb_stor_info(void)
195 {
196 int i;
197
198 if (usb_max_devs > 0) {
199 for (i = 0; i < usb_max_devs; i++) {
200 printf(" Device %d: ", i);
201 dev_print(&usb_dev_desc[i]);
202 }
203 return 0;
204 }
205
206 printf("No storage devices, perhaps not 'usb start'ed..?\n");
207 return 1;
208 }
209
210 static unsigned int usb_get_max_lun(struct us_data *us)
211 {
212 int len;
213 unsigned char result;
214 len = usb_control_msg(us->pusb_dev,
215 usb_rcvctrlpipe(us->pusb_dev, 0),
216 US_BBB_GET_MAX_LUN,
217 USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
218 0, us->ifnum,
219 &result, sizeof(result),
220 USB_CNTL_TIMEOUT * 5);
221 USB_STOR_PRINTF("Get Max LUN -> len = %i, result = %i\n",
222 len, (int) result);
223 return (len > 0) ? result : 0;
224 }
225
226 /*******************************************************************************
227 * scan the usb and reports device info
228 * to the user if mode = 1
229 * returns current device or -1 if no
230 */
231 int usb_stor_scan(int mode)
232 {
233 unsigned char i;
234 struct usb_device *dev;
235
236 /* GJ */
237 memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
238
239 if (mode == 1)
240 printf(" scanning bus for storage devices... ");
241
242 usb_disable_asynch(1); /* asynch transfer not allowed */
243
244 for (i = 0; i < USB_MAX_STOR_DEV; i++) {
245 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
246 usb_dev_desc[i].if_type = IF_TYPE_USB;
247 usb_dev_desc[i].dev = i;
248 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
249 usb_dev_desc[i].target = 0xff;
250 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
251 usb_dev_desc[i].block_read = usb_stor_read;
252 usb_dev_desc[i].block_write = usb_stor_write;
253 }
254
255 usb_max_devs = 0;
256 for (i = 0; i < USB_MAX_DEVICE; i++) {
257 dev = usb_get_dev_index(i); /* get device */
258 USB_STOR_PRINTF("i=%d\n", i);
259 if (dev == NULL)
260 break; /* no more devices available */
261
262 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
263 /* OK, it's a storage device. Iterate over its LUNs
264 * and populate `usb_dev_desc'.
265 */
266 int lun, max_lun, start = usb_max_devs;
267
268 max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
269 for (lun = 0;
270 lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
271 lun++) {
272 usb_dev_desc[usb_max_devs].lun = lun;
273 if (usb_stor_get_info(dev, &usb_stor[start],
274 &usb_dev_desc[usb_max_devs]) == 1) {
275 usb_max_devs++;
276 }
277 }
278 }
279 /* if storage device */
280 if (usb_max_devs == USB_MAX_STOR_DEV) {
281 printf("max USB Storage Device reached: %d stopping\n",
282 usb_max_devs);
283 break;
284 }
285 } /* for */
286
287 usb_disable_asynch(0); /* asynch transfer allowed */
288 printf("%d Storage Device(s) found\n", usb_max_devs);
289 if (usb_max_devs > 0)
290 return 0;
291 return -1;
292 }
293
294 static int usb_stor_irq(struct usb_device *dev)
295 {
296 struct us_data *us;
297 us = (struct us_data *)dev->privptr;
298
299 if (us->ip_wanted)
300 us->ip_wanted = 0;
301 return 0;
302 }
303
304
305 #ifdef USB_STOR_DEBUG
306
307 static void usb_show_srb(ccb *pccb)
308 {
309 int i;
310 printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
311 for (i = 0; i < 12; i++)
312 printf("%02X ", pccb->cmd[i]);
313 printf("\n");
314 }
315
316 static void display_int_status(unsigned long tmp)
317 {
318 printf("Status: %s %s %s %s %s %s %s\n",
319 (tmp & USB_ST_ACTIVE) ? "Active" : "",
320 (tmp & USB_ST_STALLED) ? "Stalled" : "",
321 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
322 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
323 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
324 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
325 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
326 }
327 #endif
328 /***********************************************************************
329 * Data transfer routines
330 ***********************************************************************/
331
332 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
333 {
334 int max_size;
335 int this_xfer;
336 int result;
337 int partial;
338 int maxtry;
339 int stat;
340
341 /* determine the maximum packet size for these transfers */
342 max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
343
344 /* while we have data left to transfer */
345 while (length) {
346
347 /* calculate how long this will be -- maximum or a remainder */
348 this_xfer = length > max_size ? max_size : length;
349 length -= this_xfer;
350
351 /* setup the retry counter */
352 maxtry = 10;
353
354 /* set up the transfer loop */
355 do {
356 /* transfer the data */
357 USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
358 (unsigned int)buf, this_xfer, 11 - maxtry);
359 result = usb_bulk_msg(us->pusb_dev, pipe, buf,
360 this_xfer, &partial,
361 USB_CNTL_TIMEOUT * 5);
362 USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
363 result, partial, this_xfer);
364 if (us->pusb_dev->status != 0) {
365 /* if we stall, we need to clear it before
366 * we go on
367 */
368 #ifdef USB_STOR_DEBUG
369 display_int_status(us->pusb_dev->status);
370 #endif
371 if (us->pusb_dev->status & USB_ST_STALLED) {
372 USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
373 stat = us->pusb_dev->status;
374 usb_clear_halt(us->pusb_dev, pipe);
375 us->pusb_dev->status = stat;
376 if (this_xfer == partial) {
377 USB_STOR_PRINTF("bulk transferred with error %lX, but data ok\n", us->pusb_dev->status);
378 return 0;
379 }
380 else
381 return result;
382 }
383 if (us->pusb_dev->status & USB_ST_NAK_REC) {
384 USB_STOR_PRINTF("Device NAKed bulk_msg\n");
385 return result;
386 }
387 USB_STOR_PRINTF("bulk transferred with error");
388 if (this_xfer == partial) {
389 USB_STOR_PRINTF(" %ld, but data ok\n",
390 us->pusb_dev->status);
391 return 0;
392 }
393 /* if our try counter reaches 0, bail out */
394 USB_STOR_PRINTF(" %ld, data %d\n",
395 us->pusb_dev->status, partial);
396 if (!maxtry--)
397 return result;
398 }
399 /* update to show what data was transferred */
400 this_xfer -= partial;
401 buf += partial;
402 /* continue until this transfer is done */
403 } while (this_xfer);
404 }
405
406 /* if we get here, we're done and successful */
407 return 0;
408 }
409
410 static int usb_stor_BBB_reset(struct us_data *us)
411 {
412 int result;
413 unsigned int pipe;
414
415 /*
416 * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
417 *
418 * For Reset Recovery the host shall issue in the following order:
419 * a) a Bulk-Only Mass Storage Reset
420 * b) a Clear Feature HALT to the Bulk-In endpoint
421 * c) a Clear Feature HALT to the Bulk-Out endpoint
422 *
423 * This is done in 3 steps.
424 *
425 * If the reset doesn't succeed, the device should be port reset.
426 *
427 * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
428 */
429 USB_STOR_PRINTF("BBB_reset\n");
430 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
431 US_BBB_RESET,
432 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
433 0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5);
434
435 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
436 USB_STOR_PRINTF("RESET:stall\n");
437 return -1;
438 }
439
440 /* long wait for reset */
441 wait_ms(150);
442 USB_STOR_PRINTF("BBB_reset result %d: status %lX reset\n", result,
443 us->pusb_dev->status);
444 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
445 result = usb_clear_halt(us->pusb_dev, pipe);
446 /* long wait for reset */
447 wait_ms(150);
448 USB_STOR_PRINTF("BBB_reset result %d: status %lX clearing IN endpoint\n",
449 result, us->pusb_dev->status);
450 /* long wait for reset */
451 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
452 result = usb_clear_halt(us->pusb_dev, pipe);
453 wait_ms(150);
454 USB_STOR_PRINTF("BBB_reset result %d: status %lX"
455 " clearing OUT endpoint\n", result,
456 us->pusb_dev->status);
457 USB_STOR_PRINTF("BBB_reset done\n");
458 return 0;
459 }
460
461 /* FIXME: this reset function doesn't really reset the port, and it
462 * should. Actually it should probably do what it's doing here, and
463 * reset the port physically
464 */
465 static int usb_stor_CB_reset(struct us_data *us)
466 {
467 unsigned char cmd[12];
468 int result;
469
470 USB_STOR_PRINTF("CB_reset\n");
471 memset(cmd, 0xff, sizeof(cmd));
472 cmd[0] = SCSI_SEND_DIAG;
473 cmd[1] = 4;
474 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
475 US_CBI_ADSC,
476 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
477 0, us->ifnum, cmd, sizeof(cmd),
478 USB_CNTL_TIMEOUT * 5);
479
480 /* long wait for reset */
481 wait_ms(1500);
482 USB_STOR_PRINTF("CB_reset result %d: status %lX"
483 " clearing endpoint halt\n", result,
484 us->pusb_dev->status);
485 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
486 usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
487
488 USB_STOR_PRINTF("CB_reset done\n");
489 return 0;
490 }
491
492 /*
493 * Set up the command for a BBB device. Note that the actual SCSI
494 * command is copied into cbw.CBWCDB.
495 */
496 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
497 {
498 int result;
499 int actlen;
500 int dir_in;
501 unsigned int pipe;
502 umass_bbb_cbw_t cbw;
503
504 dir_in = US_DIRECTION(srb->cmd[0]);
505
506 #ifdef BBB_COMDAT_TRACE
507 printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n",
508 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
509 srb->pdata);
510 if (srb->cmdlen) {
511 for (result = 0; result < srb->cmdlen; result++)
512 printf("cmd[%d] %#x ", result, srb->cmd[result]);
513 printf("\n");
514 }
515 #endif
516 /* sanity checks */
517 if (!(srb->cmdlen <= CBWCDBLENGTH)) {
518 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
519 return -1;
520 }
521
522 /* always OUT to the ep */
523 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
524
525 cbw.dCBWSignature = cpu_to_le32(CBWSIGNATURE);
526 cbw.dCBWTag = cpu_to_le32(CBWTag++);
527 cbw.dCBWDataTransferLength = cpu_to_le32(srb->datalen);
528 cbw.bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
529 cbw.bCBWLUN = srb->lun;
530 cbw.bCDBLength = srb->cmdlen;
531 /* copy the command data into the CBW command data buffer */
532 /* DST SRC LEN!!! */
533 memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
534 result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE,
535 &actlen, USB_CNTL_TIMEOUT * 5);
536 if (result < 0)
537 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
538 return result;
539 }
540
541 /* FIXME: we also need a CBI_command which sets up the completion
542 * interrupt, and waits for it
543 */
544 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
545 {
546 int result = 0;
547 int dir_in, retry;
548 unsigned int pipe;
549 unsigned long status;
550
551 retry = 5;
552 dir_in = US_DIRECTION(srb->cmd[0]);
553
554 if (dir_in)
555 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
556 else
557 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
558
559 while (retry--) {
560 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry);
561 #ifdef USB_STOR_DEBUG
562 usb_show_srb(srb);
563 #endif
564 /* let's send the command via the control pipe */
565 result = usb_control_msg(us->pusb_dev,
566 usb_sndctrlpipe(us->pusb_dev , 0),
567 US_CBI_ADSC,
568 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
569 0, us->ifnum,
570 srb->cmd, srb->cmdlen,
571 USB_CNTL_TIMEOUT * 5);
572 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
573 " status %lX\n", result, us->pusb_dev->status);
574 /* check the return code for the command */
575 if (result < 0) {
576 if (us->pusb_dev->status & USB_ST_STALLED) {
577 status = us->pusb_dev->status;
578 USB_STOR_PRINTF(" stall during command found,"
579 " clear pipe\n");
580 usb_clear_halt(us->pusb_dev,
581 usb_sndctrlpipe(us->pusb_dev, 0));
582 us->pusb_dev->status = status;
583 }
584 USB_STOR_PRINTF(" error during command %02X"
585 " Stat = %lX\n", srb->cmd[0],
586 us->pusb_dev->status);
587 return result;
588 }
589 /* transfer the data payload for this command, if one exists*/
590
591 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
592 " direction is %s to go 0x%lx\n", result,
593 dir_in ? "IN" : "OUT", srb->datalen);
594 if (srb->datalen) {
595 result = us_one_transfer(us, pipe, (char *)srb->pdata,
596 srb->datalen);
597 USB_STOR_PRINTF("CBI attempted to transfer data,"
598 " result is %d status %lX, len %d\n",
599 result, us->pusb_dev->status,
600 us->pusb_dev->act_len);
601 if (!(us->pusb_dev->status & USB_ST_NAK_REC))
602 break;
603 } /* if (srb->datalen) */
604 else
605 break;
606 }
607 /* return result */
608
609 return result;
610 }
611
612
613 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
614 {
615 int timeout;
616
617 us->ip_wanted = 1;
618 submit_int_msg(us->pusb_dev, us->irqpipe,
619 (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
620 timeout = 1000;
621 while (timeout--) {
622 if ((volatile int *) us->ip_wanted == 0)
623 break;
624 wait_ms(10);
625 }
626 if (us->ip_wanted) {
627 printf(" Did not get interrupt on CBI\n");
628 us->ip_wanted = 0;
629 return USB_STOR_TRANSPORT_ERROR;
630 }
631 USB_STOR_PRINTF
632 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
633 us->ip_data, us->pusb_dev->irq_act_len,
634 us->pusb_dev->irq_status);
635 /* UFI gives us ASC and ASCQ, like a request sense */
636 if (us->subclass == US_SC_UFI) {
637 if (srb->cmd[0] == SCSI_REQ_SENSE ||
638 srb->cmd[0] == SCSI_INQUIRY)
639 return USB_STOR_TRANSPORT_GOOD; /* Good */
640 else if (us->ip_data)
641 return USB_STOR_TRANSPORT_FAILED;
642 else
643 return USB_STOR_TRANSPORT_GOOD;
644 }
645 /* otherwise, we interpret the data normally */
646 switch (us->ip_data) {
647 case 0x0001:
648 return USB_STOR_TRANSPORT_GOOD;
649 case 0x0002:
650 return USB_STOR_TRANSPORT_FAILED;
651 default:
652 return USB_STOR_TRANSPORT_ERROR;
653 } /* switch */
654 return USB_STOR_TRANSPORT_ERROR;
655 }
656
657 #define USB_TRANSPORT_UNKNOWN_RETRY 5
658 #define USB_TRANSPORT_NOT_READY_RETRY 10
659
660 /* clear a stall on an endpoint - special for BBB devices */
661 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
662 {
663 int result;
664
665 /* ENDPOINT_HALT = 0, so set value to 0 */
666 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
667 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
668 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5);
669 return result;
670 }
671
672 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
673 {
674 int result, retry;
675 int dir_in;
676 int actlen, data_actlen;
677 unsigned int pipe, pipein, pipeout;
678 umass_bbb_csw_t csw;
679 #ifdef BBB_XPORT_TRACE
680 unsigned char *ptr;
681 int index;
682 #endif
683
684 dir_in = US_DIRECTION(srb->cmd[0]);
685
686 /* COMMAND phase */
687 USB_STOR_PRINTF("COMMAND phase\n");
688 result = usb_stor_BBB_comdat(srb, us);
689 if (result < 0) {
690 USB_STOR_PRINTF("failed to send CBW status %ld\n",
691 us->pusb_dev->status);
692 usb_stor_BBB_reset(us);
693 return USB_STOR_TRANSPORT_FAILED;
694 }
695 wait_ms(5);
696 pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
697 pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
698 /* DATA phase + error handling */
699 data_actlen = 0;
700 /* no data, go immediately to the STATUS phase */
701 if (srb->datalen == 0)
702 goto st;
703 USB_STOR_PRINTF("DATA phase\n");
704 if (dir_in)
705 pipe = pipein;
706 else
707 pipe = pipeout;
708 result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
709 &data_actlen, USB_CNTL_TIMEOUT * 5);
710 /* special handling of STALL in DATA phase */
711 if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
712 USB_STOR_PRINTF("DATA:stall\n");
713 /* clear the STALL on the endpoint */
714 result = usb_stor_BBB_clear_endpt_stall(us,
715 dir_in ? us->ep_in : us->ep_out);
716 if (result >= 0)
717 /* continue on to STATUS phase */
718 goto st;
719 }
720 if (result < 0) {
721 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
722 us->pusb_dev->status);
723 usb_stor_BBB_reset(us);
724 return USB_STOR_TRANSPORT_FAILED;
725 }
726 #ifdef BBB_XPORT_TRACE
727 for (index = 0; index < data_actlen; index++)
728 printf("pdata[%d] %#x ", index, srb->pdata[index]);
729 printf("\n");
730 #endif
731 /* STATUS phase + error handling */
732 st:
733 retry = 0;
734 again:
735 USB_STOR_PRINTF("STATUS phase\n");
736 result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
737 &actlen, USB_CNTL_TIMEOUT*5);
738
739 /* special handling of STALL in STATUS phase */
740 if ((result < 0) && (retry < 1) &&
741 (us->pusb_dev->status & USB_ST_STALLED)) {
742 USB_STOR_PRINTF("STATUS:stall\n");
743 /* clear the STALL on the endpoint */
744 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
745 if (result >= 0 && (retry++ < 1))
746 /* do a retry */
747 goto again;
748 }
749 if (result < 0) {
750 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
751 us->pusb_dev->status);
752 usb_stor_BBB_reset(us);
753 return USB_STOR_TRANSPORT_FAILED;
754 }
755 #ifdef BBB_XPORT_TRACE
756 ptr = (unsigned char *)&csw;
757 for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
758 printf("ptr[%d] %#x ", index, ptr[index]);
759 printf("\n");
760 #endif
761 /* misuse pipe to get the residue */
762 pipe = le32_to_cpu(csw.dCSWDataResidue);
763 if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
764 pipe = srb->datalen - data_actlen;
765 if (CSWSIGNATURE != le32_to_cpu(csw.dCSWSignature)) {
766 USB_STOR_PRINTF("!CSWSIGNATURE\n");
767 usb_stor_BBB_reset(us);
768 return USB_STOR_TRANSPORT_FAILED;
769 } else if ((CBWTag - 1) != le32_to_cpu(csw.dCSWTag)) {
770 USB_STOR_PRINTF("!Tag\n");
771 usb_stor_BBB_reset(us);
772 return USB_STOR_TRANSPORT_FAILED;
773 } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
774 USB_STOR_PRINTF(">PHASE\n");
775 usb_stor_BBB_reset(us);
776 return USB_STOR_TRANSPORT_FAILED;
777 } else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
778 USB_STOR_PRINTF("=PHASE\n");
779 usb_stor_BBB_reset(us);
780 return USB_STOR_TRANSPORT_FAILED;
781 } else if (data_actlen > srb->datalen) {
782 USB_STOR_PRINTF("transferred %dB instead of %ldB\n",
783 data_actlen, srb->datalen);
784 return USB_STOR_TRANSPORT_FAILED;
785 } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
786 USB_STOR_PRINTF("FAILED\n");
787 return USB_STOR_TRANSPORT_FAILED;
788 }
789
790 return result;
791 }
792
793 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
794 {
795 int result, status;
796 ccb *psrb;
797 ccb reqsrb;
798 int retry, notready;
799
800 psrb = &reqsrb;
801 status = USB_STOR_TRANSPORT_GOOD;
802 retry = 0;
803 notready = 0;
804 /* issue the command */
805 do_retry:
806 result = usb_stor_CB_comdat(srb, us);
807 USB_STOR_PRINTF("command / Data returned %d, status %lX\n",
808 result, us->pusb_dev->status);
809 /* if this is an CBI Protocol, get IRQ */
810 if (us->protocol == US_PR_CBI) {
811 status = usb_stor_CBI_get_status(srb, us);
812 /* if the status is error, report it */
813 if (status == USB_STOR_TRANSPORT_ERROR) {
814 USB_STOR_PRINTF(" USB CBI Command Error\n");
815 return status;
816 }
817 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
818 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
819 if (!us->ip_data) {
820 /* if the status is good, report it */
821 if (status == USB_STOR_TRANSPORT_GOOD) {
822 USB_STOR_PRINTF(" USB CBI Command Good\n");
823 return status;
824 }
825 }
826 }
827 /* do we have to issue an auto request? */
828 /* HERE we have to check the result */
829 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
830 USB_STOR_PRINTF("ERROR %lX\n", us->pusb_dev->status);
831 us->transport_reset(us);
832 return USB_STOR_TRANSPORT_ERROR;
833 }
834 if ((us->protocol == US_PR_CBI) &&
835 ((srb->cmd[0] == SCSI_REQ_SENSE) ||
836 (srb->cmd[0] == SCSI_INQUIRY))) {
837 /* do not issue an autorequest after request sense */
838 USB_STOR_PRINTF("No auto request and good\n");
839 return USB_STOR_TRANSPORT_GOOD;
840 }
841 /* issue an request_sense */
842 memset(&psrb->cmd[0], 0, 12);
843 psrb->cmd[0] = SCSI_REQ_SENSE;
844 psrb->cmd[1] = srb->lun << 5;
845 psrb->cmd[4] = 18;
846 psrb->datalen = 18;
847 psrb->pdata = &srb->sense_buf[0];
848 psrb->cmdlen = 12;
849 /* issue the command */
850 result = usb_stor_CB_comdat(psrb, us);
851 USB_STOR_PRINTF("auto request returned %d\n", result);
852 /* if this is an CBI Protocol, get IRQ */
853 if (us->protocol == US_PR_CBI)
854 status = usb_stor_CBI_get_status(psrb, us);
855
856 if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
857 USB_STOR_PRINTF(" AUTO REQUEST ERROR %ld\n",
858 us->pusb_dev->status);
859 return USB_STOR_TRANSPORT_ERROR;
860 }
861 USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
862 srb->sense_buf[0], srb->sense_buf[2],
863 srb->sense_buf[12], srb->sense_buf[13]);
864 /* Check the auto request result */
865 if ((srb->sense_buf[2] == 0) &&
866 (srb->sense_buf[12] == 0) &&
867 (srb->sense_buf[13] == 0)) {
868 /* ok, no sense */
869 return USB_STOR_TRANSPORT_GOOD;
870 }
871
872 /* Check the auto request result */
873 switch (srb->sense_buf[2]) {
874 case 0x01:
875 /* Recovered Error */
876 return USB_STOR_TRANSPORT_GOOD;
877 break;
878 case 0x02:
879 /* Not Ready */
880 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
881 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
882 " 0x%02X (NOT READY)\n", srb->cmd[0],
883 srb->sense_buf[0], srb->sense_buf[2],
884 srb->sense_buf[12], srb->sense_buf[13]);
885 return USB_STOR_TRANSPORT_FAILED;
886 } else {
887 wait_ms(100);
888 goto do_retry;
889 }
890 break;
891 default:
892 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
893 printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
894 " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
895 srb->sense_buf[2], srb->sense_buf[12],
896 srb->sense_buf[13]);
897 return USB_STOR_TRANSPORT_FAILED;
898 } else
899 goto do_retry;
900 break;
901 }
902 return USB_STOR_TRANSPORT_FAILED;
903 }
904
905
906 static int usb_inquiry(ccb *srb, struct us_data *ss)
907 {
908 int retry, i;
909 retry = 5;
910 do {
911 memset(&srb->cmd[0], 0, 12);
912 srb->cmd[0] = SCSI_INQUIRY;
913 srb->cmd[1] = srb->lun << 5;
914 srb->cmd[4] = 36;
915 srb->datalen = 36;
916 srb->cmdlen = 12;
917 i = ss->transport(srb, ss);
918 USB_STOR_PRINTF("inquiry returns %d\n", i);
919 if (i == 0)
920 break;
921 } while (--retry);
922
923 if (!retry) {
924 printf("error in inquiry\n");
925 return -1;
926 }
927 return 0;
928 }
929
930 static int usb_request_sense(ccb *srb, struct us_data *ss)
931 {
932 char *ptr;
933
934 ptr = (char *)srb->pdata;
935 memset(&srb->cmd[0], 0, 12);
936 srb->cmd[0] = SCSI_REQ_SENSE;
937 srb->cmd[1] = srb->lun << 5;
938 srb->cmd[4] = 18;
939 srb->datalen = 18;
940 srb->pdata = &srb->sense_buf[0];
941 srb->cmdlen = 12;
942 ss->transport(srb, ss);
943 USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",
944 srb->sense_buf[2], srb->sense_buf[12],
945 srb->sense_buf[13]);
946 srb->pdata = (uchar *)ptr;
947 return 0;
948 }
949
950 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
951 {
952 int retries = 10;
953
954 do {
955 memset(&srb->cmd[0], 0, 12);
956 srb->cmd[0] = SCSI_TST_U_RDY;
957 srb->cmd[1] = srb->lun << 5;
958 srb->datalen = 0;
959 srb->cmdlen = 12;
960 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
961 return 0;
962 usb_request_sense(srb, ss);
963 wait_ms(100);
964 } while (retries--);
965
966 return -1;
967 }
968
969 static int usb_read_capacity(ccb *srb, struct us_data *ss)
970 {
971 int retry;
972 /* XXX retries */
973 retry = 3;
974 do {
975 memset(&srb->cmd[0], 0, 12);
976 srb->cmd[0] = SCSI_RD_CAPAC;
977 srb->cmd[1] = srb->lun << 5;
978 srb->datalen = 8;
979 srb->cmdlen = 12;
980 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
981 return 0;
982 } while (retry--);
983
984 return -1;
985 }
986
987 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
988 unsigned short blocks)
989 {
990 memset(&srb->cmd[0], 0, 12);
991 srb->cmd[0] = SCSI_READ10;
992 srb->cmd[1] = srb->lun << 5;
993 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
994 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
995 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
996 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
997 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
998 srb->cmd[8] = (unsigned char) blocks & 0xff;
999 srb->cmdlen = 12;
1000 USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks);
1001 return ss->transport(srb, ss);
1002 }
1003
1004 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
1005 unsigned short blocks)
1006 {
1007 memset(&srb->cmd[0], 0, 12);
1008 srb->cmd[0] = SCSI_WRITE10;
1009 srb->cmd[1] = srb->lun << 5;
1010 srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1011 srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1012 srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1013 srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1014 srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1015 srb->cmd[8] = (unsigned char) blocks & 0xff;
1016 srb->cmdlen = 12;
1017 USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks);
1018 return ss->transport(srb, ss);
1019 }
1020
1021
1022 #ifdef CONFIG_USB_BIN_FIXUP
1023 /*
1024 * Some USB storage devices queried for SCSI identification data respond with
1025 * binary strings, which if output to the console freeze the terminal. The
1026 * workaround is to modify the vendor and product strings read from such
1027 * device with proper values (as reported by 'usb info').
1028 *
1029 * Vendor and product length limits are taken from the definition of
1030 * block_dev_desc_t in include/part.h.
1031 */
1032 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1033 unsigned char vendor[],
1034 unsigned char product[]) {
1035 const unsigned char max_vendor_len = 40;
1036 const unsigned char max_product_len = 20;
1037 if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1038 strncpy((char *)vendor, "SMSC", max_vendor_len);
1039 strncpy((char *)product, "Flash Media Cntrller",
1040 max_product_len);
1041 }
1042 }
1043 #endif /* CONFIG_USB_BIN_FIXUP */
1044
1045 unsigned long usb_stor_read(int device, unsigned long blknr,
1046 unsigned long blkcnt, void *buffer)
1047 {
1048 unsigned long start, blks, buf_addr;
1049 unsigned short smallblks;
1050 struct usb_device *dev;
1051 struct us_data *ss;
1052 int retry, i;
1053 ccb *srb = &usb_ccb;
1054
1055 if (blkcnt == 0)
1056 return 0;
1057
1058 device &= 0xff;
1059 /* Setup device */
1060 USB_STOR_PRINTF("\nusb_read: dev %d \n", device);
1061 dev = NULL;
1062 for (i = 0; i < USB_MAX_DEVICE; i++) {
1063 dev = usb_get_dev_index(i);
1064 if (dev == NULL)
1065 return 0;
1066 if (dev->devnum == usb_dev_desc[device].target)
1067 break;
1068 }
1069 ss = (struct us_data *)dev->privptr;
1070
1071 usb_disable_asynch(1); /* asynch transfer not allowed */
1072 srb->lun = usb_dev_desc[device].lun;
1073 buf_addr = (unsigned long)buffer;
1074 start = blknr;
1075 blks = blkcnt;
1076 if (usb_test_unit_ready(srb, ss)) {
1077 printf("Device NOT ready\n Request Sense returned %02X %02X"
1078 " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1079 srb->sense_buf[13]);
1080 return 0;
1081 }
1082
1083 USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx"
1084 " buffer %lx\n", device, start, blks, buf_addr);
1085
1086 do {
1087 /* XXX need some comment here */
1088 retry = 2;
1089 srb->pdata = (unsigned char *)buf_addr;
1090 if (blks > ss->max_xfer_blk)
1091 smallblks = ss->max_xfer_blk;
1092 else
1093 smallblks = (unsigned short) blks;
1094 retry_it:
1095 if (smallblks == ss->max_xfer_blk)
1096 usb_show_progress();
1097 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1098 srb->pdata = (unsigned char *)buf_addr;
1099 if (usb_read_10(srb, ss, start, smallblks)) {
1100 USB_STOR_PRINTF("Read ERROR\n");
1101 usb_request_sense(srb, ss);
1102 if (retry--)
1103 goto retry_it;
1104 blkcnt -= blks;
1105 break;
1106 }
1107 start += smallblks;
1108 blks -= smallblks;
1109 buf_addr += srb->datalen;
1110 } while (blks != 0);
1111
1112 USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",
1113 start, smallblks, buf_addr);
1114
1115 usb_disable_asynch(0); /* asynch transfer allowed */
1116 if (blkcnt >= ss->max_xfer_blk)
1117 debug("\n");
1118 return blkcnt;
1119 }
1120
1121 unsigned long usb_stor_write(int device, unsigned long blknr,
1122 unsigned long blkcnt, const void *buffer)
1123 {
1124 unsigned long start, blks, buf_addr;
1125 unsigned short smallblks;
1126 struct usb_device *dev;
1127 struct us_data *ss;
1128 int retry, i;
1129 ccb *srb = &usb_ccb;
1130
1131 if (blkcnt == 0)
1132 return 0;
1133
1134 device &= 0xff;
1135 /* Setup device */
1136 USB_STOR_PRINTF("\nusb_write: dev %d \n", device);
1137 dev = NULL;
1138 for (i = 0; i < USB_MAX_DEVICE; i++) {
1139 dev = usb_get_dev_index(i);
1140 if (dev == NULL)
1141 return 0;
1142 if (dev->devnum == usb_dev_desc[device].target)
1143 break;
1144 }
1145 ss = (struct us_data *)dev->privptr;
1146
1147 usb_disable_asynch(1); /* asynch transfer not allowed */
1148
1149 srb->lun = usb_dev_desc[device].lun;
1150 buf_addr = (unsigned long)buffer;
1151 start = blknr;
1152 blks = blkcnt;
1153 if (usb_test_unit_ready(srb, ss)) {
1154 printf("Device NOT ready\n Request Sense returned %02X %02X"
1155 " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1156 srb->sense_buf[13]);
1157 return 0;
1158 }
1159
1160 USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx"
1161 " buffer %lx\n", device, start, blks, buf_addr);
1162
1163 do {
1164 /* If write fails retry for max retry count else
1165 * return with number of blocks written successfully.
1166 */
1167 retry = 2;
1168 srb->pdata = (unsigned char *)buf_addr;
1169 if (blks > ss->max_xfer_blk)
1170 smallblks = ss->max_xfer_blk;
1171 else
1172 smallblks = (unsigned short) blks;
1173 retry_it:
1174 if (smallblks == ss->max_xfer_blk)
1175 usb_show_progress();
1176 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1177 srb->pdata = (unsigned char *)buf_addr;
1178 if (usb_write_10(srb, ss, start, smallblks)) {
1179 USB_STOR_PRINTF("Write ERROR\n");
1180 usb_request_sense(srb, ss);
1181 if (retry--)
1182 goto retry_it;
1183 blkcnt -= blks;
1184 break;
1185 }
1186 start += smallblks;
1187 blks -= smallblks;
1188 buf_addr += srb->datalen;
1189 } while (blks != 0);
1190
1191 USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n",
1192 start, smallblks, buf_addr);
1193
1194 usb_disable_asynch(0); /* asynch transfer allowed */
1195 if (blkcnt >= ss->max_xfer_blk)
1196 debug("\n");
1197 return blkcnt;
1198
1199 }
1200
1201 /* Probe to see if a new device is actually a Storage device */
1202 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1203 struct us_data *ss)
1204 {
1205 struct usb_interface *iface;
1206 int i;
1207 unsigned int flags = 0;
1208
1209 int protocol = 0;
1210 int subclass = 0;
1211
1212 /* let's examine the device now */
1213 iface = &dev->config.if_desc[ifnum];
1214
1215 #if 0
1216 /* this is the place to patch some storage devices */
1217 USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1218 dev->descriptor.idProduct);
1219
1220 if ((dev->descriptor.idVendor) == 0x066b &&
1221 (dev->descriptor.idProduct) == 0x0103) {
1222 USB_STOR_PRINTF("patched for E-USB\n");
1223 protocol = US_PR_CB;
1224 subclass = US_SC_UFI; /* an assumption */
1225 }
1226 #endif
1227
1228 if (dev->descriptor.bDeviceClass != 0 ||
1229 iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1230 iface->desc.bInterfaceSubClass < US_SC_MIN ||
1231 iface->desc.bInterfaceSubClass > US_SC_MAX) {
1232 /* if it's not a mass storage, we go no further */
1233 return 0;
1234 }
1235
1236 memset(ss, 0, sizeof(struct us_data));
1237
1238 /* At this point, we know we've got a live one */
1239 USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1240
1241 /* Initialize the us_data structure with some useful info */
1242 ss->flags = flags;
1243 ss->ifnum = ifnum;
1244 ss->pusb_dev = dev;
1245 ss->attention_done = 0;
1246
1247 /* If the device has subclass and protocol, then use that. Otherwise,
1248 * take data from the specific interface.
1249 */
1250 if (subclass) {
1251 ss->subclass = subclass;
1252 ss->protocol = protocol;
1253 } else {
1254 ss->subclass = iface->desc.bInterfaceSubClass;
1255 ss->protocol = iface->desc.bInterfaceProtocol;
1256 }
1257
1258 /* set the handler pointers based on the protocol */
1259 USB_STOR_PRINTF("Transport: ");
1260 switch (ss->protocol) {
1261 case US_PR_CB:
1262 USB_STOR_PRINTF("Control/Bulk\n");
1263 ss->transport = usb_stor_CB_transport;
1264 ss->transport_reset = usb_stor_CB_reset;
1265 break;
1266
1267 case US_PR_CBI:
1268 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1269 ss->transport = usb_stor_CB_transport;
1270 ss->transport_reset = usb_stor_CB_reset;
1271 break;
1272 case US_PR_BULK:
1273 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1274 ss->transport = usb_stor_BBB_transport;
1275 ss->transport_reset = usb_stor_BBB_reset;
1276 break;
1277 default:
1278 printf("USB Storage Transport unknown / not yet implemented\n");
1279 return 0;
1280 break;
1281 }
1282
1283 /*
1284 * We are expecting a minimum of 2 endpoints - in and out (bulk).
1285 * An optional interrupt is OK (necessary for CBI protocol).
1286 * We will ignore any others.
1287 */
1288 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1289 /* is it an BULK endpoint? */
1290 if ((iface->ep_desc[i].bmAttributes &
1291 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1292 if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1293 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1294 USB_ENDPOINT_NUMBER_MASK;
1295 else
1296 ss->ep_out =
1297 iface->ep_desc[i].bEndpointAddress &
1298 USB_ENDPOINT_NUMBER_MASK;
1299 }
1300
1301 /* is it an interrupt endpoint? */
1302 if ((iface->ep_desc[i].bmAttributes &
1303 USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1304 ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1305 USB_ENDPOINT_NUMBER_MASK;
1306 ss->irqinterval = iface->ep_desc[i].bInterval;
1307 }
1308 }
1309 USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1310 ss->ep_in, ss->ep_out, ss->ep_int);
1311
1312 /* Do some basic sanity checks, and bail if we find a problem */
1313 if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1314 !ss->ep_in || !ss->ep_out ||
1315 (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1316 USB_STOR_PRINTF("Problems with device\n");
1317 return 0;
1318 }
1319 /* set class specific stuff */
1320 /* We only handle certain protocols. Currently, these are
1321 * the only ones.
1322 * The SFF8070 accepts the requests used in u-boot
1323 */
1324 if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1325 ss->subclass != US_SC_8070) {
1326 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1327 return 0;
1328 }
1329 if (ss->ep_int) {
1330 /* we had found an interrupt endpoint, prepare irq pipe
1331 * set up the IRQ pipe and handler
1332 */
1333 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1334 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1335 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1336 dev->irq_handle = usb_stor_irq;
1337 }
1338 dev->privptr = (void *)ss;
1339 return 1;
1340 }
1341
1342 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1343 block_dev_desc_t *dev_desc)
1344 {
1345 unsigned char perq, modi;
1346 unsigned long cap[2];
1347 unsigned long *capacity, *blksz;
1348 ccb *pccb = &usb_ccb;
1349
1350 pccb->pdata = usb_stor_buf;
1351
1352 dev_desc->target = dev->devnum;
1353 pccb->lun = dev_desc->lun;
1354 USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1355
1356 if (usb_inquiry(pccb, ss))
1357 return -1;
1358
1359 perq = usb_stor_buf[0];
1360 modi = usb_stor_buf[1];
1361
1362 if ((perq & 0x1f) == 0x1f) {
1363 /* skip unknown devices */
1364 return 0;
1365 }
1366 if ((modi&0x80) == 0x80) {
1367 /* drive is removable */
1368 dev_desc->removable = 1;
1369 }
1370 memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1371 memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1372 memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1373 dev_desc->vendor[8] = 0;
1374 dev_desc->product[16] = 0;
1375 dev_desc->revision[4] = 0;
1376 #ifdef CONFIG_USB_BIN_FIXUP
1377 usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1378 (uchar *)dev_desc->product);
1379 #endif /* CONFIG_USB_BIN_FIXUP */
1380 USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1381 usb_stor_buf[3]);
1382 if (usb_test_unit_ready(pccb, ss)) {
1383 printf("Device NOT ready\n"
1384 " Request Sense returned %02X %02X %02X\n",
1385 pccb->sense_buf[2], pccb->sense_buf[12],
1386 pccb->sense_buf[13]);
1387 if (dev_desc->removable == 1) {
1388 dev_desc->type = perq;
1389 return 1;
1390 }
1391 return 0;
1392 }
1393 pccb->pdata = (unsigned char *)&cap[0];
1394 memset(pccb->pdata, 0, 8);
1395 if (usb_read_capacity(pccb, ss) != 0) {
1396 printf("READ_CAP ERROR\n");
1397 cap[0] = 2880;
1398 cap[1] = 0x200;
1399 }
1400 USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0],
1401 cap[1]);
1402 #if 0
1403 if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1404 cap[0] >>= 16;
1405 #endif
1406 cap[0] = cpu_to_be32(cap[0]);
1407 cap[1] = cpu_to_be32(cap[1]);
1408
1409 /* this assumes bigendian! */
1410 cap[0] += 1;
1411 capacity = &cap[0];
1412 blksz = &cap[1];
1413 USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",
1414 *capacity, *blksz);
1415 dev_desc->lba = *capacity;
1416 dev_desc->blksz = *blksz;
1417 dev_desc->type = perq;
1418 USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1419 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1420
1421 /*
1422 * The U-Boot EHCI driver cannot handle more than 4096 * 5 bytes in a
1423 * transfer without running itself out of qt_buffers.
1424 */
1425 ss->max_xfer_blk = (4096 * 5) / dev_desc->blksz;
1426
1427 init_part(dev_desc);
1428
1429 USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1430 return 1;
1431 }
"Das U-Boot" Source Tree