Merge branch 'master' of git://git.denx.de/u-boot-usb
[kernel/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 <gj@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 USB_STOR_DEBUG
60 #undef BBB_COMDAT_TRACE
61 #undef BBB_XPORT_TRACE
62
63 #ifdef  USB_STOR_DEBUG
64 #define USB_STOR_PRINTF(fmt, args...)   printf(fmt , ##args)
65 #else
66 #define USB_STOR_PRINTF(fmt, args...)
67 #endif
68
69 #include <scsi.h>
70 /* direction table -- this indicates the direction of the data
71  * transfer for each command code -- a 1 indicates input
72  */
73 unsigned char us_direction[256/8] = {
74         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
75         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
76         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
77         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
78 };
79 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
80
81 static unsigned char usb_stor_buf[512];
82 static ccb usb_ccb;
83
84 /*
85  * CBI style
86  */
87
88 #define US_CBI_ADSC             0
89
90 /*
91  * BULK only
92  */
93 #define US_BBB_RESET            0xff
94 #define US_BBB_GET_MAX_LUN      0xfe
95
96 /* Command Block Wrapper */
97 typedef struct {
98         __u32           dCBWSignature;
99 #       define CBWSIGNATURE     0x43425355
100         __u32           dCBWTag;
101         __u32           dCBWDataTransferLength;
102         __u8            bCBWFlags;
103 #       define CBWFLAGS_OUT     0x00
104 #       define CBWFLAGS_IN      0x80
105         __u8            bCBWLUN;
106         __u8            bCDBLength;
107 #       define CBWCDBLENGTH     16
108         __u8            CBWCDB[CBWCDBLENGTH];
109 } umass_bbb_cbw_t;
110 #define UMASS_BBB_CBW_SIZE      31
111 static __u32 CBWTag;
112
113 /* Command Status Wrapper */
114 typedef struct {
115         __u32           dCSWSignature;
116 #       define CSWSIGNATURE     0x53425355
117         __u32           dCSWTag;
118         __u32           dCSWDataResidue;
119         __u8            bCSWStatus;
120 #       define CSWSTATUS_GOOD   0x0
121 #       define CSWSTATUS_FAILED 0x1
122 #       define CSWSTATUS_PHASE  0x2
123 } umass_bbb_csw_t;
124 #define UMASS_BBB_CSW_SIZE      13
125
126 #define USB_MAX_STOR_DEV 5
127 static int usb_max_devs; /* number of highest available usb device */
128
129 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
130
131 struct us_data;
132 typedef int (*trans_cmnd)(ccb *cb, struct us_data *data);
133 typedef int (*trans_reset)(struct us_data *data);
134
135 struct us_data {
136         struct usb_device *pusb_dev;     /* this usb_device */
137
138         unsigned int    flags;                  /* from filter initially */
139         unsigned char   ifnum;                  /* interface number */
140         unsigned char   ep_in;                  /* in endpoint */
141         unsigned char   ep_out;                 /* out ....... */
142         unsigned char   ep_int;                 /* interrupt . */
143         unsigned char   subclass;               /* as in overview */
144         unsigned char   protocol;               /* .............. */
145         unsigned char   attention_done;         /* force attn on first cmd */
146         unsigned short  ip_data;                /* interrupt data */
147         int             action;                 /* what to do */
148         int             ip_wanted;              /* needed */
149         int             *irq_handle;            /* for USB int requests */
150         unsigned int    irqpipe;                /* pipe for release_irq */
151         unsigned char   irqmaxp;                /* max packed for irq Pipe */
152         unsigned char   irqinterval;            /* Intervall for IRQ Pipe */
153         ccb             *srb;                   /* current srb */
154         trans_reset     transport_reset;        /* reset routine */
155         trans_cmnd      transport;              /* transport routine */
156 };
157
158 static struct us_data usb_stor[USB_MAX_STOR_DEV];
159
160
161 #define USB_STOR_TRANSPORT_GOOD    0
162 #define USB_STOR_TRANSPORT_FAILED -1
163 #define USB_STOR_TRANSPORT_ERROR  -2
164
165 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
166                       block_dev_desc_t *dev_desc);
167 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
168                       struct us_data *ss);
169 unsigned long usb_stor_read(int device, unsigned long blknr,
170                             unsigned long blkcnt, void *buffer);
171 struct usb_device * usb_get_dev_index(int index);
172 void uhci_show_temp_int_td(void);
173
174 block_dev_desc_t *usb_stor_get_dev(int index)
175 {
176         return (index < USB_MAX_STOR_DEV) ? &usb_dev_desc[index] : NULL;
177 }
178
179
180 void usb_show_progress(void)
181 {
182         printf(".");
183 }
184
185 /*******************************************************************************
186  * show info on storage devices; 'usb start/init' must be invoked earlier
187  * as we only retrieve structures populated during devices initialization
188  */
189 int usb_stor_info(void)
190 {
191         int i;
192
193         if (usb_max_devs > 0) {
194                 for (i = 0; i < usb_max_devs; i++) {
195                         printf("  Device %d: ", i);
196                         dev_print(&usb_dev_desc[i]);
197                 }
198                 return 0;
199         }
200
201         printf("No storage devices, perhaps not 'usb start'ed..?\n");
202         return 1;
203 }
204
205 /*******************************************************************************
206  * scan the usb and reports device info
207  * to the user if mode = 1
208  * returns current device or -1 if no
209  */
210 int usb_stor_scan(int mode)
211 {
212         unsigned char i;
213         struct usb_device *dev;
214
215         /* GJ */
216         memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
217
218         if (mode == 1)
219                 printf("       scanning bus for storage devices... ");
220
221         usb_disable_asynch(1); /* asynch transfer not allowed */
222
223         for (i = 0; i < USB_MAX_STOR_DEV; i++) {
224                 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
225                 usb_dev_desc[i].target = 0xff;
226                 usb_dev_desc[i].if_type = IF_TYPE_USB;
227                 usb_dev_desc[i].dev = i;
228                 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
229                 usb_dev_desc[i].block_read = usb_stor_read;
230         }
231
232         usb_max_devs = 0;
233         for (i = 0; i < USB_MAX_DEVICE; i++) {
234                 dev = usb_get_dev_index(i); /* get device */
235                 USB_STOR_PRINTF("i=%d\n", i);
236                 if (dev == NULL)
237                         break; /* no more devices avaiable */
238
239                 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
240                         /* ok, it is a storage devices
241                          * get info and fill it in
242                          */
243                         if (usb_stor_get_info(dev, &usb_stor[usb_max_devs],
244                                                 &usb_dev_desc[usb_max_devs]))
245                                 usb_max_devs++;
246                 }
247                 /* if storage device */
248                 if (usb_max_devs == USB_MAX_STOR_DEV) {
249                         printf("max USB Storage Device reached: %d stopping\n",
250                                 usb_max_devs);
251                         break;
252                 }
253         } /* for */
254
255         usb_disable_asynch(0); /* asynch transfer allowed */
256         printf("%d Storage Device(s) found\n", usb_max_devs);
257         if (usb_max_devs > 0)
258                 return 0;
259         return -1;
260 }
261
262 static int usb_stor_irq(struct usb_device *dev)
263 {
264         struct us_data *us;
265         us = (struct us_data *)dev->privptr;
266
267         if (us->ip_wanted)
268                 us->ip_wanted = 0;
269         return 0;
270 }
271
272
273 #ifdef  USB_STOR_DEBUG
274
275 static void usb_show_srb(ccb *pccb)
276 {
277         int i;
278         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
279         for (i = 0; i < 12; i++)
280                 printf("%02X ", pccb->cmd[i]);
281         printf("\n");
282 }
283
284 static void display_int_status(unsigned long tmp)
285 {
286         printf("Status: %s %s %s %s %s %s %s\n",
287                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
288                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
289                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
290                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
291                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
292                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
293                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
294 }
295 #endif
296 /***********************************************************************
297  * Data transfer routines
298  ***********************************************************************/
299
300 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
301 {
302         int max_size;
303         int this_xfer;
304         int result;
305         int partial;
306         int maxtry;
307         int stat;
308
309         /* determine the maximum packet size for these transfers */
310         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
311
312         /* while we have data left to transfer */
313         while (length) {
314
315                 /* calculate how long this will be -- maximum or a remainder */
316                 this_xfer = length > max_size ? max_size : length;
317                 length -= this_xfer;
318
319                 /* setup the retry counter */
320                 maxtry = 10;
321
322                 /* set up the transfer loop */
323                 do {
324                         /* transfer the data */
325                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
326                                   (unsigned int)buf, this_xfer, 11 - maxtry);
327                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
328                                               this_xfer, &partial,
329                                               USB_CNTL_TIMEOUT * 5);
330                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
331                                   result, partial, this_xfer);
332                         if (us->pusb_dev->status != 0) {
333                                 /* if we stall, we need to clear it before
334                                  * we go on
335                                  */
336 #ifdef USB_STOR_DEBUG
337                                 display_int_status(us->pusb_dev->status);
338 #endif
339                                 if (us->pusb_dev->status & USB_ST_STALLED) {
340                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
341                                         stat = us->pusb_dev->status;
342                                         usb_clear_halt(us->pusb_dev, pipe);
343                                         us->pusb_dev->status = stat;
344                                         if (this_xfer == partial) {
345                                                 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n", us->pusb_dev->status);
346                                                 return 0;
347                                         }
348                                         else
349                                                 return result;
350                                 }
351                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
352                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
353                                         return result;
354                                 }
355                                 USB_STOR_PRINTF("bulk transferred with error");
356                                 if (this_xfer == partial) {
357                                         USB_STOR_PRINTF(" %d, but data ok\n",
358                                                         us->pusb_dev->status);
359                                         return 0;
360                                 }
361                                 /* if our try counter reaches 0, bail out */
362                                         USB_STOR_PRINTF(" %d, data %d\n",
363                                                 us->pusb_dev->status, partial);
364                                 if (!maxtry--)
365                                                 return result;
366                         }
367                         /* update to show what data was transferred */
368                         this_xfer -= partial;
369                         buf += partial;
370                         /* continue until this transfer is done */
371                 } while (this_xfer);
372         }
373
374         /* if we get here, we're done and successful */
375         return 0;
376 }
377
378 static int usb_stor_BBB_reset(struct us_data *us)
379 {
380         int result;
381         unsigned int pipe;
382
383         /*
384          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
385          *
386          * For Reset Recovery the host shall issue in the following order:
387          * a) a Bulk-Only Mass Storage Reset
388          * b) a Clear Feature HALT to the Bulk-In endpoint
389          * c) a Clear Feature HALT to the Bulk-Out endpoint
390          *
391          * This is done in 3 steps.
392          *
393          * If the reset doesn't succeed, the device should be port reset.
394          *
395          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
396          */
397         USB_STOR_PRINTF("BBB_reset\n");
398         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
399                                  US_BBB_RESET,
400                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
401                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5);
402
403         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
404                 USB_STOR_PRINTF("RESET:stall\n");
405                 return -1;
406         }
407
408         /* long wait for reset */
409         wait_ms(150);
410         USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n", result,
411                         us->pusb_dev->status);
412         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
413         result = usb_clear_halt(us->pusb_dev, pipe);
414         /* long wait for reset */
415         wait_ms(150);
416         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",
417                         result, us->pusb_dev->status);
418         /* long wait for reset */
419         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
420         result = usb_clear_halt(us->pusb_dev, pipe);
421         wait_ms(150);
422         USB_STOR_PRINTF("BBB_reset result %d: status %X"
423                         " clearing OUT endpoint\n", result,
424                         us->pusb_dev->status);
425         USB_STOR_PRINTF("BBB_reset done\n");
426         return 0;
427 }
428
429 /* FIXME: this reset function doesn't really reset the port, and it
430  * should. Actually it should probably do what it's doing here, and
431  * reset the port physically
432  */
433 static int usb_stor_CB_reset(struct us_data *us)
434 {
435         unsigned char cmd[12];
436         int result;
437
438         USB_STOR_PRINTF("CB_reset\n");
439         memset(cmd, 0xff, sizeof(cmd));
440         cmd[0] = SCSI_SEND_DIAG;
441         cmd[1] = 4;
442         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
443                                  US_CBI_ADSC,
444                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
445                                  0, us->ifnum, cmd, sizeof(cmd),
446                                  USB_CNTL_TIMEOUT * 5);
447
448         /* long wait for reset */
449         wait_ms(1500);
450         USB_STOR_PRINTF("CB_reset result %d: status %X"
451                         " clearing endpoint halt\n", result,
452                         us->pusb_dev->status);
453         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
454         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
455
456         USB_STOR_PRINTF("CB_reset done\n");
457         return 0;
458 }
459
460 /*
461  * Set up the command for a BBB device. Note that the actual SCSI
462  * command is copied into cbw.CBWCDB.
463  */
464 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
465 {
466         int result;
467         int actlen;
468         int dir_in;
469         unsigned int pipe;
470         umass_bbb_cbw_t cbw;
471
472         dir_in = US_DIRECTION(srb->cmd[0]);
473
474 #ifdef BBB_COMDAT_TRACE
475         printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n",
476                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
477                 srb->pdata);
478         if (srb->cmdlen) {
479                 for (result = 0; result < srb->cmdlen; result++)
480                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
481                 printf("\n");
482         }
483 #endif
484         /* sanity checks */
485         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
486                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
487                 return -1;
488         }
489
490         /* always OUT to the ep */
491         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
492
493         cbw.dCBWSignature = cpu_to_le32(CBWSIGNATURE);
494         cbw.dCBWTag = cpu_to_le32(CBWTag++);
495         cbw.dCBWDataTransferLength = cpu_to_le32(srb->datalen);
496         cbw.bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
497         cbw.bCBWLUN = srb->lun;
498         cbw.bCDBLength = srb->cmdlen;
499         /* copy the command data into the CBW command data buffer */
500         /* DST SRC LEN!!! */
501         memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
502         result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE,
503                               &actlen, USB_CNTL_TIMEOUT * 5);
504         if (result < 0)
505                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
506         return result;
507 }
508
509 /* FIXME: we also need a CBI_command which sets up the completion
510  * interrupt, and waits for it
511  */
512 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
513 {
514         int result = 0;
515         int dir_in, retry;
516         unsigned int pipe;
517         unsigned long status;
518
519         retry = 5;
520         dir_in = US_DIRECTION(srb->cmd[0]);
521
522         if (dir_in)
523                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
524         else
525                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
526
527         while (retry--) {
528                 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry);
529 #ifdef USB_STOR_DEBUG
530                 usb_show_srb(srb);
531 #endif
532                 /* let's send the command via the control pipe */
533                 result = usb_control_msg(us->pusb_dev,
534                                          usb_sndctrlpipe(us->pusb_dev , 0),
535                                          US_CBI_ADSC,
536                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
537                                          0, us->ifnum,
538                                          srb->cmd, srb->cmdlen,
539                                          USB_CNTL_TIMEOUT * 5);
540                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
541                                 " status %X\n", result, us->pusb_dev->status);
542                 /* check the return code for the command */
543                 if (result < 0) {
544                         if (us->pusb_dev->status & USB_ST_STALLED) {
545                                 status = us->pusb_dev->status;
546                                 USB_STOR_PRINTF(" stall during command found,"
547                                                 " clear pipe\n");
548                                 usb_clear_halt(us->pusb_dev,
549                                               usb_sndctrlpipe(us->pusb_dev, 0));
550                                 us->pusb_dev->status = status;
551                         }
552                         USB_STOR_PRINTF(" error during command %02X"
553                                         " Stat = %X\n", srb->cmd[0],
554                                         us->pusb_dev->status);
555                         return result;
556                 }
557                 /* transfer the data payload for this command, if one exists*/
558
559                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
560                                 " direction is %s to go 0x%lx\n", result,
561                                 dir_in ? "IN" : "OUT", srb->datalen);
562                 if (srb->datalen) {
563                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
564                                                  srb->datalen);
565                         USB_STOR_PRINTF("CBI attempted to transfer data,"
566                                         " result is %d status %lX, len %d\n",
567                                         result, us->pusb_dev->status,
568                                         us->pusb_dev->act_len);
569                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
570                                 break;
571                 } /* if (srb->datalen) */
572                 else
573                         break;
574         }
575         /* return result */
576
577         return result;
578 }
579
580
581 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
582 {
583         int timeout;
584
585         us->ip_wanted = 1;
586         submit_int_msg(us->pusb_dev, us->irqpipe,
587                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
588         timeout = 1000;
589         while (timeout--) {
590                 if ((volatile int *) us->ip_wanted == 0)
591                         break;
592                 wait_ms(10);
593         }
594         if (us->ip_wanted) {
595                 printf("        Did not get interrupt on CBI\n");
596                 us->ip_wanted = 0;
597                 return USB_STOR_TRANSPORT_ERROR;
598         }
599         USB_STOR_PRINTF
600                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
601                  us->ip_data, us->pusb_dev->irq_act_len,
602                  us->pusb_dev->irq_status);
603         /* UFI gives us ASC and ASCQ, like a request sense */
604         if (us->subclass == US_SC_UFI) {
605                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
606                     srb->cmd[0] == SCSI_INQUIRY)
607                         return USB_STOR_TRANSPORT_GOOD; /* Good */
608                 else if (us->ip_data)
609                         return USB_STOR_TRANSPORT_FAILED;
610                 else
611                         return USB_STOR_TRANSPORT_GOOD;
612         }
613         /* otherwise, we interpret the data normally */
614         switch (us->ip_data) {
615         case 0x0001:
616                 return USB_STOR_TRANSPORT_GOOD;
617         case 0x0002:
618                 return USB_STOR_TRANSPORT_FAILED;
619         default:
620                 return USB_STOR_TRANSPORT_ERROR;
621         }                       /* switch */
622         return USB_STOR_TRANSPORT_ERROR;
623 }
624
625 #define USB_TRANSPORT_UNKNOWN_RETRY 5
626 #define USB_TRANSPORT_NOT_READY_RETRY 10
627
628 /* clear a stall on an endpoint - special for BBB devices */
629 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
630 {
631         int result;
632
633         /* ENDPOINT_HALT = 0, so set value to 0 */
634         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
635                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
636                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5);
637         return result;
638 }
639
640 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
641 {
642         int result, retry;
643         int dir_in;
644         int actlen, data_actlen;
645         unsigned int pipe, pipein, pipeout;
646         umass_bbb_csw_t csw;
647 #ifdef BBB_XPORT_TRACE
648         unsigned char *ptr;
649         int index;
650 #endif
651
652         dir_in = US_DIRECTION(srb->cmd[0]);
653
654         /* COMMAND phase */
655         USB_STOR_PRINTF("COMMAND phase\n");
656         result = usb_stor_BBB_comdat(srb, us);
657         if (result < 0) {
658                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
659                         us->pusb_dev->status);
660                 usb_stor_BBB_reset(us);
661                 return USB_STOR_TRANSPORT_FAILED;
662         }
663         wait_ms(5);
664         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
665         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
666         /* DATA phase + error handling */
667         data_actlen = 0;
668         /* no data, go immediately to the STATUS phase */
669         if (srb->datalen == 0)
670                 goto st;
671         USB_STOR_PRINTF("DATA phase\n");
672         if (dir_in)
673                 pipe = pipein;
674         else
675                 pipe = pipeout;
676         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
677                               &data_actlen, USB_CNTL_TIMEOUT * 5);
678         /* special handling of STALL in DATA phase */
679         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
680                 USB_STOR_PRINTF("DATA:stall\n");
681                 /* clear the STALL on the endpoint */
682                 result = usb_stor_BBB_clear_endpt_stall(us,
683                                         dir_in ? us->ep_in : us->ep_out);
684                 if (result >= 0)
685                         /* continue on to STATUS phase */
686                         goto st;
687         }
688         if (result < 0) {
689                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
690                         us->pusb_dev->status);
691                 usb_stor_BBB_reset(us);
692                 return USB_STOR_TRANSPORT_FAILED;
693         }
694 #ifdef BBB_XPORT_TRACE
695         for (index = 0; index < data_actlen; index++)
696                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
697         printf("\n");
698 #endif
699         /* STATUS phase + error handling */
700 st:
701         retry = 0;
702 again:
703         USB_STOR_PRINTF("STATUS phase\n");
704         result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
705                                 &actlen, USB_CNTL_TIMEOUT*5);
706
707         /* special handling of STALL in STATUS phase */
708         if ((result < 0) && (retry < 1) &&
709             (us->pusb_dev->status & USB_ST_STALLED)) {
710                 USB_STOR_PRINTF("STATUS:stall\n");
711                 /* clear the STALL on the endpoint */
712                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
713                 if (result >= 0 && (retry++ < 1))
714                         /* do a retry */
715                         goto again;
716         }
717         if (result < 0) {
718                 USB_STOR_PRINTF("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         ptr = (unsigned char *)&csw;
725         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
726                 printf("ptr[%d] %#x ", index, ptr[index]);
727         printf("\n");
728 #endif
729         /* misuse pipe to get the residue */
730         pipe = le32_to_cpu(csw.dCSWDataResidue);
731         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
732                 pipe = srb->datalen - data_actlen;
733         if (CSWSIGNATURE != le32_to_cpu(csw.dCSWSignature)) {
734                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
735                 usb_stor_BBB_reset(us);
736                 return USB_STOR_TRANSPORT_FAILED;
737         } else if ((CBWTag - 1) != le32_to_cpu(csw.dCSWTag)) {
738                 USB_STOR_PRINTF("!Tag\n");
739                 usb_stor_BBB_reset(us);
740                 return USB_STOR_TRANSPORT_FAILED;
741         } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
742                 USB_STOR_PRINTF(">PHASE\n");
743                 usb_stor_BBB_reset(us);
744                 return USB_STOR_TRANSPORT_FAILED;
745         } else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
746                 USB_STOR_PRINTF("=PHASE\n");
747                 usb_stor_BBB_reset(us);
748                 return USB_STOR_TRANSPORT_FAILED;
749         } else if (data_actlen > srb->datalen) {
750                 USB_STOR_PRINTF("transferred %dB instead of %dB\n",
751                         data_actlen, srb->datalen);
752                 return USB_STOR_TRANSPORT_FAILED;
753         } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
754                 USB_STOR_PRINTF("FAILED\n");
755                 return USB_STOR_TRANSPORT_FAILED;
756         }
757
758         return result;
759 }
760
761 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
762 {
763         int result, status;
764         ccb *psrb;
765         ccb reqsrb;
766         int retry, notready;
767
768         psrb = &reqsrb;
769         status = USB_STOR_TRANSPORT_GOOD;
770         retry = 0;
771         notready = 0;
772         /* issue the command */
773 do_retry:
774         result = usb_stor_CB_comdat(srb, us);
775         USB_STOR_PRINTF("command / Data returned %d, status %X\n",
776                         result, us->pusb_dev->status);
777         /* if this is an CBI Protocol, get IRQ */
778         if (us->protocol == US_PR_CBI) {
779                 status = usb_stor_CBI_get_status(srb, us);
780                 /* if the status is error, report it */
781                 if (status == USB_STOR_TRANSPORT_ERROR) {
782                         USB_STOR_PRINTF(" USB CBI Command Error\n");
783                         return status;
784                 }
785                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
786                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
787                 if (!us->ip_data) {
788                         /* if the status is good, report it */
789                         if (status == USB_STOR_TRANSPORT_GOOD) {
790                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
791                                 return status;
792                         }
793                 }
794         }
795         /* do we have to issue an auto request? */
796         /* HERE we have to check the result */
797         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
798                 USB_STOR_PRINTF("ERROR %X\n", us->pusb_dev->status);
799                 us->transport_reset(us);
800                 return USB_STOR_TRANSPORT_ERROR;
801         }
802         if ((us->protocol == US_PR_CBI) &&
803             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
804             (srb->cmd[0] == SCSI_INQUIRY))) {
805                 /* do not issue an autorequest after request sense */
806                 USB_STOR_PRINTF("No auto request and good\n");
807                 return USB_STOR_TRANSPORT_GOOD;
808         }
809         /* issue an request_sense */
810         memset(&psrb->cmd[0], 0, 12);
811         psrb->cmd[0] = SCSI_REQ_SENSE;
812         psrb->cmd[1] = srb->lun << 5;
813         psrb->cmd[4] = 18;
814         psrb->datalen = 18;
815         psrb->pdata = &srb->sense_buf[0];
816         psrb->cmdlen = 12;
817         /* issue the command */
818         result = usb_stor_CB_comdat(psrb, us);
819         USB_STOR_PRINTF("auto request returned %d\n", result);
820         /* if this is an CBI Protocol, get IRQ */
821         if (us->protocol == US_PR_CBI)
822                 status = usb_stor_CBI_get_status(psrb, us);
823
824         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
825                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",
826                                 us->pusb_dev->status);
827                 return USB_STOR_TRANSPORT_ERROR;
828         }
829         USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
830                         srb->sense_buf[0], srb->sense_buf[2],
831                         srb->sense_buf[12], srb->sense_buf[13]);
832         /* Check the auto request result */
833         if ((srb->sense_buf[2] == 0) &&
834             (srb->sense_buf[12] == 0) &&
835             (srb->sense_buf[13] == 0)) {
836                 /* ok, no sense */
837                 return USB_STOR_TRANSPORT_GOOD;
838         }
839
840         /* Check the auto request result */
841         switch (srb->sense_buf[2]) {
842         case 0x01:
843                 /* Recovered Error */
844                 return USB_STOR_TRANSPORT_GOOD;
845                 break;
846         case 0x02:
847                 /* Not Ready */
848                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
849                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
850                                " 0x%02X (NOT READY)\n", srb->cmd[0],
851                                 srb->sense_buf[0], srb->sense_buf[2],
852                                 srb->sense_buf[12], srb->sense_buf[13]);
853                         return USB_STOR_TRANSPORT_FAILED;
854                 } else {
855                         wait_ms(100);
856                         goto do_retry;
857                 }
858                 break;
859         default:
860                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
861                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
862                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
863                                 srb->sense_buf[2], srb->sense_buf[12],
864                                 srb->sense_buf[13]);
865                         return USB_STOR_TRANSPORT_FAILED;
866                 } else
867                         goto do_retry;
868                 break;
869         }
870         return USB_STOR_TRANSPORT_FAILED;
871 }
872
873
874 static int usb_inquiry(ccb *srb, struct us_data *ss)
875 {
876         int retry, i;
877         retry = 5;
878         do {
879                 memset(&srb->cmd[0], 0, 12);
880                 srb->cmd[0] = SCSI_INQUIRY;
881                 srb->cmd[4] = 36;
882                 srb->datalen = 36;
883                 srb->cmdlen = 12;
884                 i = ss->transport(srb, ss);
885                 USB_STOR_PRINTF("inquiry returns %d\n", i);
886                 if (i == 0)
887                         break;
888         } while (retry--);
889
890         if (!retry) {
891                 printf("error in inquiry\n");
892                 return -1;
893         }
894         return 0;
895 }
896
897 static int usb_request_sense(ccb *srb, struct us_data *ss)
898 {
899         char *ptr;
900
901         ptr = (char *)srb->pdata;
902         memset(&srb->cmd[0], 0, 12);
903         srb->cmd[0] = SCSI_REQ_SENSE;
904         srb->cmd[4] = 18;
905         srb->datalen = 18;
906         srb->pdata = &srb->sense_buf[0];
907         srb->cmdlen = 12;
908         ss->transport(srb, ss);
909         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",
910                         srb->sense_buf[2], srb->sense_buf[12],
911                         srb->sense_buf[13]);
912         srb->pdata = (uchar *)ptr;
913         return 0;
914 }
915
916 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
917 {
918         int retries = 10;
919
920         do {
921                 memset(&srb->cmd[0], 0, 12);
922                 srb->cmd[0] = SCSI_TST_U_RDY;
923                 srb->datalen = 0;
924                 srb->cmdlen = 12;
925                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
926                         return 0;
927                 usb_request_sense(srb, ss);
928                 wait_ms(100);
929         } while (retries--);
930
931         return -1;
932 }
933
934 static int usb_read_capacity(ccb *srb, struct us_data *ss)
935 {
936         int retry;
937         /* XXX retries */
938         retry = 3;
939         do {
940                 memset(&srb->cmd[0], 0, 12);
941                 srb->cmd[0] = SCSI_RD_CAPAC;
942                 srb->datalen = 8;
943                 srb->cmdlen = 12;
944                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
945                         return 0;
946         } while (retry--);
947
948         return -1;
949 }
950
951 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
952                        unsigned short blocks)
953 {
954         memset(&srb->cmd[0], 0, 12);
955         srb->cmd[0] = SCSI_READ10;
956         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
957         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
958         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
959         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
960         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
961         srb->cmd[8] = (unsigned char) blocks & 0xff;
962         srb->cmdlen = 12;
963         USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks);
964         return ss->transport(srb, ss);
965 }
966
967
968 #ifdef CONFIG_USB_BIN_FIXUP
969 /*
970  * Some USB storage devices queried for SCSI identification data respond with
971  * binary strings, which if output to the console freeze the terminal. The
972  * workaround is to modify the vendor and product strings read from such
973  * device with proper values (as reported by 'usb info').
974  *
975  * Vendor and product length limits are taken from the definition of
976  * block_dev_desc_t in include/part.h.
977  */
978 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
979                                 unsigned char vendor[],
980                                 unsigned char product[]) {
981         const unsigned char max_vendor_len = 40;
982         const unsigned char max_product_len = 20;
983         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
984                 strncpy((char *)vendor, "SMSC", max_vendor_len);
985                 strncpy((char *)product, "Flash Media Cntrller",
986                         max_product_len);
987         }
988 }
989 #endif /* CONFIG_USB_BIN_FIXUP */
990
991 #define USB_MAX_READ_BLK 20
992
993 unsigned long usb_stor_read(int device, unsigned long blknr,
994                             unsigned long blkcnt, void *buffer)
995 {
996         unsigned long start, blks, buf_addr;
997         unsigned short smallblks;
998         struct usb_device *dev;
999         int retry, i;
1000         ccb *srb = &usb_ccb;
1001
1002         if (blkcnt == 0)
1003                 return 0;
1004
1005         device &= 0xff;
1006         /* Setup  device */
1007         USB_STOR_PRINTF("\nusb_read: dev %d \n", device);
1008         dev = NULL;
1009         for (i = 0; i < USB_MAX_DEVICE; i++) {
1010                 dev = usb_get_dev_index(i);
1011                 if (dev == NULL)
1012                         return 0;
1013                 if (dev->devnum == usb_dev_desc[device].target)
1014                         break;
1015         }
1016
1017         usb_disable_asynch(1); /* asynch transfer not allowed */
1018         srb->lun = usb_dev_desc[device].lun;
1019         buf_addr = (unsigned long)buffer;
1020         start = blknr;
1021         blks = blkcnt;
1022         if (usb_test_unit_ready(srb, (struct us_data *)dev->privptr)) {
1023                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1024                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1025                        srb->sense_buf[13]);
1026                 return 0;
1027         }
1028
1029         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx"
1030                         " buffer %lx\n", device, start, blks, buf_addr);
1031
1032         do {
1033                 /* XXX need some comment here */
1034                 retry = 2;
1035                 srb->pdata = (unsigned char *)buf_addr;
1036                 if (blks > USB_MAX_READ_BLK)
1037                         smallblks = USB_MAX_READ_BLK;
1038                 else
1039                         smallblks = (unsigned short) blks;
1040 retry_it:
1041                 if (smallblks == USB_MAX_READ_BLK)
1042                         usb_show_progress();
1043                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1044                 srb->pdata = (unsigned char *)buf_addr;
1045                 if (usb_read_10(srb, (struct us_data *)dev->privptr, start,
1046                     smallblks)) {
1047                         USB_STOR_PRINTF("Read ERROR\n");
1048                         usb_request_sense(srb, (struct us_data *)dev->privptr);
1049                         if (retry--)
1050                                 goto retry_it;
1051                         blkcnt -= blks;
1052                         break;
1053                 }
1054                 start += smallblks;
1055                 blks -= smallblks;
1056                 buf_addr += srb->datalen;
1057         } while (blks != 0);
1058
1059         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",
1060                         start, smallblks, buf_addr);
1061
1062         usb_disable_asynch(0); /* asynch transfer allowed */
1063         if (blkcnt >= USB_MAX_READ_BLK)
1064                 printf("\n");
1065         return blkcnt;
1066 }
1067
1068
1069 /* Probe to see if a new device is actually a Storage device */
1070 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1071                       struct us_data *ss)
1072 {
1073         struct usb_interface_descriptor *iface;
1074         int i;
1075         unsigned int flags = 0;
1076
1077         int protocol = 0;
1078         int subclass = 0;
1079
1080         /* let's examine the device now */
1081         iface = &dev->config.if_desc[ifnum];
1082
1083 #if 0
1084         /* this is the place to patch some storage devices */
1085         USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1086                         dev->descriptor.idProduct);
1087
1088         if ((dev->descriptor.idVendor) == 0x066b &&
1089             (dev->descriptor.idProduct) == 0x0103) {
1090                 USB_STOR_PRINTF("patched for E-USB\n");
1091                 protocol = US_PR_CB;
1092                 subclass = US_SC_UFI;       /* an assumption */
1093         }
1094 #endif
1095
1096         if (dev->descriptor.bDeviceClass != 0 ||
1097                         iface->bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1098                         iface->bInterfaceSubClass < US_SC_MIN ||
1099                         iface->bInterfaceSubClass > US_SC_MAX) {
1100                 /* if it's not a mass storage, we go no further */
1101                 return 0;
1102         }
1103
1104         memset(ss, 0, sizeof(struct us_data));
1105
1106         /* At this point, we know we've got a live one */
1107         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1108
1109         /* Initialize the us_data structure with some useful info */
1110         ss->flags = flags;
1111         ss->ifnum = ifnum;
1112         ss->pusb_dev = dev;
1113         ss->attention_done = 0;
1114
1115         /* If the device has subclass and protocol, then use that.  Otherwise,
1116          * take data from the specific interface.
1117          */
1118         if (subclass) {
1119                 ss->subclass = subclass;
1120                 ss->protocol = protocol;
1121         } else {
1122                 ss->subclass = iface->bInterfaceSubClass;
1123                 ss->protocol = iface->bInterfaceProtocol;
1124         }
1125
1126         /* set the handler pointers based on the protocol */
1127         USB_STOR_PRINTF("Transport: ");
1128         switch (ss->protocol) {
1129         case US_PR_CB:
1130                 USB_STOR_PRINTF("Control/Bulk\n");
1131                 ss->transport = usb_stor_CB_transport;
1132                 ss->transport_reset = usb_stor_CB_reset;
1133                 break;
1134
1135         case US_PR_CBI:
1136                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1137                 ss->transport = usb_stor_CB_transport;
1138                 ss->transport_reset = usb_stor_CB_reset;
1139                 break;
1140         case US_PR_BULK:
1141                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1142                 ss->transport = usb_stor_BBB_transport;
1143                 ss->transport_reset = usb_stor_BBB_reset;
1144                 break;
1145         default:
1146                 printf("USB Storage Transport unknown / not yet implemented\n");
1147                 return 0;
1148                 break;
1149         }
1150
1151         /*
1152          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1153          * An optional interrupt is OK (necessary for CBI protocol).
1154          * We will ignore any others.
1155          */
1156         for (i = 0; i < iface->bNumEndpoints; i++) {
1157                 /* is it an BULK endpoint? */
1158                 if ((iface->ep_desc[i].bmAttributes &
1159                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1160                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1161                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1162                                         USB_ENDPOINT_NUMBER_MASK;
1163                         else
1164                                 ss->ep_out =
1165                                         iface->ep_desc[i].bEndpointAddress &
1166                                         USB_ENDPOINT_NUMBER_MASK;
1167                 }
1168
1169                 /* is it an interrupt endpoint? */
1170                 if ((iface->ep_desc[i].bmAttributes &
1171                     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1172                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1173                                 USB_ENDPOINT_NUMBER_MASK;
1174                         ss->irqinterval = iface->ep_desc[i].bInterval;
1175                 }
1176         }
1177         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1178                   ss->ep_in, ss->ep_out, ss->ep_int);
1179
1180         /* Do some basic sanity checks, and bail if we find a problem */
1181         if (usb_set_interface(dev, iface->bInterfaceNumber, 0) ||
1182             !ss->ep_in || !ss->ep_out ||
1183             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1184                 USB_STOR_PRINTF("Problems with device\n");
1185                 return 0;
1186         }
1187         /* set class specific stuff */
1188         /* We only handle certain protocols.  Currently, these are
1189          * the only ones.
1190          * The SFF8070 accepts the requests used in u-boot
1191          */
1192         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1193             ss->subclass != US_SC_8070) {
1194                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1195                 return 0;
1196         }
1197         if (ss->ep_int) {
1198                 /* we had found an interrupt endpoint, prepare irq pipe
1199                  * set up the IRQ pipe and handler
1200                  */
1201                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1202                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1203                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1204                 dev->irq_handle = usb_stor_irq;
1205         }
1206         dev->privptr = (void *)ss;
1207         return 1;
1208 }
1209
1210 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1211                       block_dev_desc_t *dev_desc)
1212 {
1213         unsigned char perq, modi;
1214         unsigned long cap[2];
1215         unsigned long *capacity, *blksz;
1216         ccb *pccb = &usb_ccb;
1217
1218         /* for some reasons a couple of devices would not survive this reset */
1219         if (
1220             /* Sony USM256E */
1221             (dev->descriptor.idVendor == 0x054c &&
1222              dev->descriptor.idProduct == 0x019e)
1223             ||
1224             /* USB007 Mini-USB2 Flash Drive */
1225             (dev->descriptor.idVendor == 0x066f &&
1226              dev->descriptor.idProduct == 0x2010)
1227             ||
1228             /* SanDisk Corporation Cruzer Micro 20044318410546613953 */
1229             (dev->descriptor.idVendor == 0x0781 &&
1230              dev->descriptor.idProduct == 0x5151)
1231             ||
1232             /*
1233              * SanDisk Corporation U3 Cruzer Micro 1/4GB
1234              * Flash Drive 000016244373FFB4
1235              */
1236             (dev->descriptor.idVendor == 0x0781 &&
1237              dev->descriptor.idProduct == 0x5406)
1238             )
1239                 USB_STOR_PRINTF("usb_stor_get_info: skipping RESET..\n");
1240         else
1241                 ss->transport_reset(ss);
1242
1243         pccb->pdata = usb_stor_buf;
1244
1245         dev_desc->target = dev->devnum;
1246         pccb->lun = dev_desc->lun;
1247         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1248
1249         if (usb_inquiry(pccb, ss))
1250                 return -1;
1251
1252         perq = usb_stor_buf[0];
1253         modi = usb_stor_buf[1];
1254
1255         if ((perq & 0x1f) == 0x1f) {
1256                 /* skip unknown devices */
1257                 return 0;
1258         }
1259         if ((modi&0x80) == 0x80) {
1260                 /* drive is removable */
1261                 dev_desc->removable = 1;
1262         }
1263         memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1264         memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1265         memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1266         dev_desc->vendor[8] = 0;
1267         dev_desc->product[16] = 0;
1268         dev_desc->revision[4] = 0;
1269 #ifdef CONFIG_USB_BIN_FIXUP
1270         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1271                       (uchar *)dev_desc->product);
1272 #endif /* CONFIG_USB_BIN_FIXUP */
1273         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1274                         usb_stor_buf[3]);
1275         if (usb_test_unit_ready(pccb, ss)) {
1276                 printf("Device NOT ready\n"
1277                        "   Request Sense returned %02X %02X %02X\n",
1278                        pccb->sense_buf[2], pccb->sense_buf[12],
1279                        pccb->sense_buf[13]);
1280                 if (dev_desc->removable == 1) {
1281                         dev_desc->type = perq;
1282                         return 1;
1283                 }
1284                 return 0;
1285         }
1286         pccb->pdata = (unsigned char *)&cap[0];
1287         memset(pccb->pdata, 0, 8);
1288         if (usb_read_capacity(pccb, ss) != 0) {
1289                 printf("READ_CAP ERROR\n");
1290                 cap[0] = 2880;
1291                 cap[1] = 0x200;
1292         }
1293         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0],
1294                         cap[1]);
1295 #if 0
1296         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1297                 cap[0] >>= 16;
1298 #endif
1299         cap[0] = cpu_to_be32(cap[0]);
1300         cap[1] = cpu_to_be32(cap[1]);
1301
1302         /* this assumes bigendian! */
1303         cap[0] += 1;
1304         capacity = &cap[0];
1305         blksz = &cap[1];
1306         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",
1307                         *capacity, *blksz);
1308         dev_desc->lba = *capacity;
1309         dev_desc->blksz = *blksz;
1310         dev_desc->type = perq;
1311         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1312         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1313
1314         init_part(dev_desc);
1315
1316         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1317         return 1;
1318 }