Merge branch 'master' of git://www.denx.de/git/u-boot-mpc85xx
[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  * Nota bene: if you are using the BBB support with a little-endian
49  * CPU then you MUST define LITTLEENDIAN in the configuration file!
50  */
51
52
53 #include <common.h>
54 #include <command.h>
55 #include <asm/processor.h>
56
57
58 #if defined(CONFIG_CMD_USB)
59 #include <part.h>
60 #include <usb.h>
61
62 #ifdef CONFIG_USB_STORAGE
63
64 #undef USB_STOR_DEBUG
65 #undef BBB_COMDAT_TRACE
66 #undef BBB_XPORT_TRACE
67
68 #ifdef  USB_STOR_DEBUG
69 #define USB_STOR_PRINTF(fmt,args...)    printf (fmt ,##args)
70 #else
71 #define USB_STOR_PRINTF(fmt,args...)
72 #endif
73
74 #include <scsi.h>
75 /* direction table -- this indicates the direction of the data
76  * transfer for each command code -- a 1 indicates input
77  */
78 unsigned char us_direction[256/8] = {
79         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
80         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
81         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
82         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
83 };
84 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
85
86 static unsigned char usb_stor_buf[512];
87 static ccb usb_ccb;
88
89 /*
90  * CBI style
91  */
92
93 #define US_CBI_ADSC             0
94
95 /*
96  * BULK only
97  */
98 #define US_BBB_RESET            0xff
99 #define US_BBB_GET_MAX_LUN      0xfe
100
101 /* Command Block Wrapper */
102 typedef struct {
103         __u32           dCBWSignature;
104 #       define CBWSIGNATURE     0x43425355
105         __u32           dCBWTag;
106         __u32           dCBWDataTransferLength;
107         __u8            bCBWFlags;
108 #       define CBWFLAGS_OUT     0x00
109 #       define CBWFLAGS_IN      0x80
110         __u8            bCBWLUN;
111         __u8            bCDBLength;
112 #       define CBWCDBLENGTH     16
113         __u8            CBWCDB[CBWCDBLENGTH];
114 } umass_bbb_cbw_t;
115 #define UMASS_BBB_CBW_SIZE      31
116 static __u32 CBWTag = 0;
117
118 /* Command Status Wrapper */
119 typedef struct {
120         __u32           dCSWSignature;
121 #       define CSWSIGNATURE     0x53425355
122         __u32           dCSWTag;
123         __u32           dCSWDataResidue;
124         __u8            bCSWStatus;
125 #       define CSWSTATUS_GOOD   0x0
126 #       define CSWSTATUS_FAILED 0x1
127 #       define CSWSTATUS_PHASE  0x2
128 } umass_bbb_csw_t;
129 #define UMASS_BBB_CSW_SIZE      13
130
131 #define USB_MAX_STOR_DEV 5
132 static int usb_max_devs = 0; /* number of highest available usb device */
133
134 static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
135
136 struct us_data;
137 typedef int (*trans_cmnd)(ccb*, struct us_data*);
138 typedef int (*trans_reset)(struct us_data*);
139
140 struct us_data {
141         struct usb_device       *pusb_dev;       /* this usb_device */
142         unsigned int            flags;           /* from filter initially */
143         unsigned char           ifnum;           /* interface number */
144         unsigned char           ep_in;           /* in endpoint */
145         unsigned char           ep_out;          /* out ....... */
146         unsigned char           ep_int;          /* interrupt . */
147         unsigned char           subclass;        /* as in overview */
148         unsigned char           protocol;        /* .............. */
149         unsigned char           attention_done;  /* force attn on first cmd */
150         unsigned short  ip_data;         /* interrupt data */
151         int                                                     action;          /* what to do */
152         int                                                     ip_wanted; /* needed */
153         int                                                     *irq_handle;     /* for USB int requests */
154         unsigned int            irqpipe;         /* pipe for release_irq */
155         unsigned char           irqmaxp;        /* max packed for irq Pipe */
156         unsigned char   irqinterval; /* Intervall for IRQ Pipe */
157         ccb                                                     *srb;            /* current srb */
158         trans_reset                     transport_reset; /* reset routine */
159         trans_cmnd                      transport; /* transport routine */
160 };
161
162 static struct us_data usb_stor[USB_MAX_STOR_DEV];
163
164
165 #define USB_STOR_TRANSPORT_GOOD    0
166 #define USB_STOR_TRANSPORT_FAILED -1
167 #define USB_STOR_TRANSPORT_ERROR  -2
168
169
170 int usb_stor_get_info(struct usb_device *dev, struct us_data *us, block_dev_desc_t *dev_desc);
171 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,struct us_data *ss);
172 unsigned long usb_stor_read(int device, unsigned long blknr, unsigned long blkcnt, void *buffer);
173 struct usb_device * usb_get_dev_index(int index);
174 void uhci_show_temp_int_td(void);
175
176 block_dev_desc_t *usb_stor_get_dev(int index)
177 {
178         return (index < USB_MAX_STOR_DEV) ? &usb_dev_desc[index] : NULL;
179 }
180
181
182 void usb_show_progress(void)
183 {
184         printf(".");
185 }
186
187 /*********************************************************************************
188  * show info on storage devices; 'usb start/init' must be invoked earlier
189  * as we only retrieve structures populated during devices initialization
190  */
191 int usb_stor_info(void)
192 {
193         int i;
194
195         if (usb_max_devs > 0) {
196                 for (i = 0; i < usb_max_devs; i++) {
197                         printf ("  Device %d: ", i);
198                         dev_print(&usb_dev_desc[i]);
199                 }
200                 return 0;
201         }
202         
203         printf("No storage devices, perhaps not 'usb start'ed..?\n");
204         return 1;
205 }
206
207 /*********************************************************************************
208  * scan the usb and reports device info
209  * to the user if mode = 1
210  * returns current device or -1 if no
211  */
212 int usb_stor_scan(int mode)
213 {
214         unsigned char i;
215         struct usb_device *dev;
216
217         /* GJ */
218         memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
219
220         if(mode==1) {
221                 printf("       scanning bus for storage devices... ");
222         }
223         usb_disable_asynch(1); /* asynch transfer not allowed */
224
225         for(i=0;i<USB_MAX_STOR_DEV;i++) {
226                 memset(&usb_dev_desc[i],0,sizeof(block_dev_desc_t));
227                 usb_dev_desc[i].target=0xff;
228                 usb_dev_desc[i].if_type=IF_TYPE_USB;
229                 usb_dev_desc[i].dev=i;
230                 usb_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
231                 usb_dev_desc[i].block_read=usb_stor_read;
232         }
233
234         usb_max_devs=0;
235         for(i=0;i<USB_MAX_DEVICE;i++) {
236                 dev=usb_get_dev_index(i); /* get device */
237                 USB_STOR_PRINTF("i=%d\n",i);
238                 if(dev==NULL) {
239                         break; /* no more devices avaiable */
240                 }
241                 if(usb_storage_probe(dev,0,&usb_stor[usb_max_devs])) { /* ok, it is a storage devices */
242                         /* get info and fill it in */
243                         if(usb_stor_get_info(dev, &usb_stor[usb_max_devs], &usb_dev_desc[usb_max_devs]))
244                                 usb_max_devs++;
245                 } /* if storage device */
246                 if(usb_max_devs==USB_MAX_STOR_DEV) {
247                         printf("max USB Storage Device reached: %d stopping\n",usb_max_devs);
248                         break;
249                 }
250         } /* for */
251
252         usb_disable_asynch(0); /* asynch transfer allowed */
253         printf("%d Storage Device(s) found\n", usb_max_devs);
254         if(usb_max_devs>0)
255                 return 0;
256         else
257                 return-1;
258 }
259
260 static int usb_stor_irq(struct usb_device *dev)
261 {
262         struct us_data *us;
263         us=(struct us_data *)dev->privptr;
264
265         if(us->ip_wanted) {
266                 us->ip_wanted=0;
267         }
268         return 0;
269 }
270
271
272 #ifdef  USB_STOR_DEBUG
273
274 static void usb_show_srb(ccb * pccb)
275 {
276         int i;
277         printf("SRB: len %d datalen 0x%lX\n ",pccb->cmdlen,pccb->datalen);
278         for(i=0;i<12;i++) {
279                 printf("%02X ",pccb->cmd[i]);
280         }
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, USB_CNTL_TIMEOUT*5);
329                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
330                                   result, partial, this_xfer);
331                         if(us->pusb_dev->status!=0) {
332                                 /* if we stall, we need to clear it before we go on */
333 #ifdef USB_STOR_DEBUG
334                                 display_int_status(us->pusb_dev->status);
335 #endif
336                                 if (us->pusb_dev->status & USB_ST_STALLED) {
337                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
338                                         stat = us->pusb_dev->status;
339                                         usb_clear_halt(us->pusb_dev, pipe);
340                                         us->pusb_dev->status=stat;
341                                         if(this_xfer == partial) {
342                                                 USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n",us->pusb_dev->status);
343                                                 return 0;
344                                         }
345                                         else
346                                                 return result;
347                                 }
348                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
349                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
350                                         return result;
351                                 }
352                                 if(this_xfer == partial) {
353                                         USB_STOR_PRINTF("bulk transferred with error %d, but data ok\n",us->pusb_dev->status);
354                                         return 0;
355                                 }
356                                 /* if our try counter reaches 0, bail out */
357                                 USB_STOR_PRINTF("bulk transferred with error %d, data %d\n",us->pusb_dev->status,partial);
358                                 if (!maxtry--)
359                                                 return result;
360                         }
361                         /* update to show what data was transferred */
362                         this_xfer -= partial;
363                         buf += partial;
364                         /* continue until this transfer is done */
365                 } while ( this_xfer );
366         }
367
368         /* if we get here, we're done and successful */
369         return 0;
370 }
371
372 static int usb_stor_BBB_reset(struct us_data *us)
373 {
374         int result;
375         unsigned int pipe;
376
377         /*
378          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
379          *
380          * For Reset Recovery the host shall issue in the following order:
381          * a) a Bulk-Only Mass Storage Reset
382          * b) a Clear Feature HALT to the Bulk-In endpoint
383          * c) a Clear Feature HALT to the Bulk-Out endpoint
384          *
385          * This is done in 3 steps.
386          *
387          * If the reset doesn't succeed, the device should be port reset.
388          *
389          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
390          */
391         USB_STOR_PRINTF("BBB_reset\n");
392         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
393                                  US_BBB_RESET, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
394                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT*5);
395
396         if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED))
397         {
398                 USB_STOR_PRINTF("RESET:stall\n");
399                 return -1;
400         }
401
402         /* long wait for reset */
403         wait_ms(150);
404         USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n",result,us->pusb_dev->status);
405         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
406         result = usb_clear_halt(us->pusb_dev, pipe);
407         /* long wait for reset */
408         wait_ms(150);
409         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",result,us->pusb_dev->status);
410         /* long wait for reset */
411         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
412         result = usb_clear_halt(us->pusb_dev, pipe);
413         wait_ms(150);
414         USB_STOR_PRINTF("BBB_reset result %d: status %X clearing OUT endpoint\n",result,us->pusb_dev->status);
415         USB_STOR_PRINTF("BBB_reset done\n");
416         return 0;
417 }
418
419 /* FIXME: this reset function doesn't really reset the port, and it
420  * should. Actually it should probably do what it's doing here, and
421  * reset the port physically
422  */
423 static int usb_stor_CB_reset(struct us_data *us)
424 {
425         unsigned char cmd[12];
426         int result;
427
428         USB_STOR_PRINTF("CB_reset\n");
429         memset(cmd, 0xFF, sizeof(cmd));
430         cmd[0] = SCSI_SEND_DIAG;
431         cmd[1] = 4;
432         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
433                                  US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
434                                  0, us->ifnum, cmd, sizeof(cmd), USB_CNTL_TIMEOUT*5);
435
436         /* long wait for reset */
437         wait_ms(1500);
438         USB_STOR_PRINTF("CB_reset result %d: status %X clearing endpoint halt\n",result,us->pusb_dev->status);
439         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
440         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
441
442         USB_STOR_PRINTF("CB_reset done\n");
443         return 0;
444 }
445
446 /*
447  * Set up the command for a BBB device. Note that the actual SCSI
448  * command is copied into cbw.CBWCDB.
449  */
450 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
451 {
452         int result;
453         int actlen;
454         int dir_in;
455         unsigned int pipe;
456         umass_bbb_cbw_t cbw;
457
458         dir_in = US_DIRECTION(srb->cmd[0]);
459
460 #ifdef BBB_COMDAT_TRACE
461         printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n", dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, srb->pdata);
462         if (srb->cmdlen) {
463                 for(result = 0;result < srb->cmdlen;result++)
464                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
465                 printf("\n");
466         }
467 #endif
468         /* sanity checks */
469         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
470                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
471                 return -1;
472         }
473
474         /* always OUT to the ep */
475         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
476
477         cbw.dCBWSignature = swap_32(CBWSIGNATURE);
478         cbw.dCBWTag = swap_32(CBWTag++);
479         cbw.dCBWDataTransferLength = swap_32(srb->datalen);
480         cbw.bCBWFlags = (dir_in? CBWFLAGS_IN : CBWFLAGS_OUT);
481         cbw.bCBWLUN = srb->lun;
482         cbw.bCDBLength = srb->cmdlen;
483         /* copy the command data into the CBW command data buffer */
484         /* DST SRC LEN!!! */
485         memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen);
486         result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE, &actlen, USB_CNTL_TIMEOUT*5);
487         if (result < 0)
488                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
489         return result;
490 }
491
492 /* FIXME: we also need a CBI_command which sets up the completion
493  * interrupt, and waits for it
494  */
495 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
496 {
497         int result = 0;
498         int dir_in,retry;
499         unsigned int pipe;
500         unsigned long status;
501
502         retry=5;
503                 dir_in=US_DIRECTION(srb->cmd[0]);
504
505                 if(dir_in)
506                         pipe=usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
507                 else
508                         pipe=usb_sndbulkpipe(us->pusb_dev, us->ep_out);
509         while(retry--) {
510                 USB_STOR_PRINTF("CBI gets a command: Try %d\n",5-retry);
511 #ifdef USB_STOR_DEBUG
512                 usb_show_srb(srb);
513 #endif
514                 /* let's send the command via the control pipe */
515                 result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
516                                          US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
517                                          0, us->ifnum,
518                                          srb->cmd, srb->cmdlen, USB_CNTL_TIMEOUT*5);
519                 USB_STOR_PRINTF("CB_transport: control msg returned %d, status %X\n",result,us->pusb_dev->status);
520                 /* check the return code for the command */
521                 if (result < 0) {
522                         if(us->pusb_dev->status & USB_ST_STALLED) {
523                                 status=us->pusb_dev->status;
524                                 USB_STOR_PRINTF(" stall during command found, clear pipe\n");
525                                 usb_clear_halt(us->pusb_dev,  usb_sndctrlpipe(us->pusb_dev,0));
526                                 us->pusb_dev->status=status;
527                         }
528                         USB_STOR_PRINTF(" error during command %02X Stat = %X\n",srb->cmd[0],us->pusb_dev->status);
529                         return result;
530                 }
531                 /* transfer the data payload for this command, if one exists*/
532
533                 USB_STOR_PRINTF("CB_transport: control msg returned %d, direction is %s to go 0x%lx\n",result,dir_in ? "IN" : "OUT",srb->datalen);
534                 if (srb->datalen) {
535                         result = us_one_transfer(us, pipe, (char *)srb->pdata,srb->datalen);
536                         USB_STOR_PRINTF("CBI attempted to transfer data, result is %d status %lX, len %d\n", result,us->pusb_dev->status,us->pusb_dev->act_len);
537                         if(!(us->pusb_dev->status & USB_ST_NAK_REC))
538                                 break;
539                 } /* if (srb->datalen) */
540                 else
541                         break;
542         }
543         /* return result */
544
545         return result;
546 }
547
548
549 int usb_stor_CBI_get_status (ccb * srb, struct us_data *us)
550 {
551         int timeout;
552
553         us->ip_wanted = 1;
554         submit_int_msg (us->pusb_dev, us->irqpipe,
555                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
556         timeout = 1000;
557         while (timeout--) {
558                 if ((volatile int *) us->ip_wanted == 0)
559                         break;
560                 wait_ms (10);
561         }
562         if (us->ip_wanted) {
563                 printf ("       Did not get interrupt on CBI\n");
564                 us->ip_wanted = 0;
565                 return USB_STOR_TRANSPORT_ERROR;
566         }
567         USB_STOR_PRINTF
568                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
569                  us->ip_data, us->pusb_dev->irq_act_len,
570                  us->pusb_dev->irq_status);
571         /* UFI gives us ASC and ASCQ, like a request sense */
572         if (us->subclass == US_SC_UFI) {
573                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
574                     srb->cmd[0] == SCSI_INQUIRY)
575                         return USB_STOR_TRANSPORT_GOOD; /* Good */
576                 else if (us->ip_data)
577                         return USB_STOR_TRANSPORT_FAILED;
578                 else
579                         return USB_STOR_TRANSPORT_GOOD;
580         }
581         /* otherwise, we interpret the data normally */
582         switch (us->ip_data) {
583         case 0x0001:
584                 return USB_STOR_TRANSPORT_GOOD;
585         case 0x0002:
586                 return USB_STOR_TRANSPORT_FAILED;
587         default:
588                 return USB_STOR_TRANSPORT_ERROR;
589         }                       /* switch */
590         return USB_STOR_TRANSPORT_ERROR;
591 }
592
593 #define USB_TRANSPORT_UNKNOWN_RETRY 5
594 #define USB_TRANSPORT_NOT_READY_RETRY 10
595
596 /* clear a stall on an endpoint - special for BBB devices */
597 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
598 {
599         int result;
600
601         /* ENDPOINT_HALT = 0, so set value to 0 */
602         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
603                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
604                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT*5);
605         return result;
606 }
607
608 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
609 {
610         int result, retry;
611         int dir_in;
612         int actlen, data_actlen;
613         unsigned int pipe, pipein, pipeout;
614         umass_bbb_csw_t csw;
615 #ifdef BBB_XPORT_TRACE
616         unsigned char *ptr;
617         int index;
618 #endif
619
620         dir_in = US_DIRECTION(srb->cmd[0]);
621
622         /* COMMAND phase */
623         USB_STOR_PRINTF("COMMAND phase\n");
624         result = usb_stor_BBB_comdat(srb, us);
625         if (result < 0) {
626                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
627                         us->pusb_dev->status);
628                 usb_stor_BBB_reset(us);
629                 return USB_STOR_TRANSPORT_FAILED;
630         }
631         wait_ms(5);
632         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
633         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
634         /* DATA phase + error handling */
635         data_actlen = 0;
636         /* no data, go immediately to the STATUS phase */
637         if (srb->datalen == 0)
638                 goto st;
639         USB_STOR_PRINTF("DATA phase\n");
640         if (dir_in)
641                 pipe = pipein;
642         else
643                 pipe = pipeout;
644         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, &data_actlen, USB_CNTL_TIMEOUT*5);
645         /* special handling of STALL in DATA phase */
646         if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
647                 USB_STOR_PRINTF("DATA:stall\n");
648                 /* clear the STALL on the endpoint */
649                 result = usb_stor_BBB_clear_endpt_stall(us, dir_in? us->ep_in : us->ep_out);
650                 if (result >= 0)
651                         /* continue on to STATUS phase */
652                         goto st;
653         }
654         if (result < 0) {
655                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
656                         us->pusb_dev->status);
657                 usb_stor_BBB_reset(us);
658                 return USB_STOR_TRANSPORT_FAILED;
659         }
660 #ifdef BBB_XPORT_TRACE
661         for (index = 0; index < data_actlen; index++)
662                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
663         printf("\n");
664 #endif
665         /* STATUS phase + error handling */
666    st:
667         retry = 0;
668    again:
669         USB_STOR_PRINTF("STATUS phase\n");
670         result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE,
671                                 &actlen, USB_CNTL_TIMEOUT*5);
672
673         /* special handling of STALL in STATUS phase */
674         if((result < 0) && (retry < 1) && (us->pusb_dev->status & USB_ST_STALLED)) {
675                 USB_STOR_PRINTF("STATUS:stall\n");
676                 /* clear the STALL on the endpoint */
677                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
678                 if (result >= 0 && (retry++ < 1))
679                         /* do a retry */
680                         goto again;
681         }
682         if (result < 0) {
683                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
684                         us->pusb_dev->status);
685                 usb_stor_BBB_reset(us);
686                 return USB_STOR_TRANSPORT_FAILED;
687         }
688 #ifdef BBB_XPORT_TRACE
689         ptr = (unsigned char *)&csw;
690         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
691                 printf("ptr[%d] %#x ", index, ptr[index]);
692         printf("\n");
693 #endif
694         /* misuse pipe to get the residue */
695         pipe = swap_32(csw.dCSWDataResidue);
696         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
697                 pipe = srb->datalen - data_actlen;
698         if (CSWSIGNATURE != swap_32(csw.dCSWSignature)) {
699                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
700                 usb_stor_BBB_reset(us);
701                 return USB_STOR_TRANSPORT_FAILED;
702         } else if ((CBWTag - 1) != swap_32(csw.dCSWTag)) {
703                 USB_STOR_PRINTF("!Tag\n");
704                 usb_stor_BBB_reset(us);
705                 return USB_STOR_TRANSPORT_FAILED;
706         } else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
707                 USB_STOR_PRINTF(">PHASE\n");
708                 usb_stor_BBB_reset(us);
709                 return USB_STOR_TRANSPORT_FAILED;
710         } else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
711                 USB_STOR_PRINTF("=PHASE\n");
712                 usb_stor_BBB_reset(us);
713                 return USB_STOR_TRANSPORT_FAILED;
714         } else if (data_actlen > srb->datalen) {
715                 USB_STOR_PRINTF("transferred %dB instead of %dB\n",
716                         data_actlen, srb->datalen);
717                 return USB_STOR_TRANSPORT_FAILED;
718         } else if (csw.bCSWStatus == CSWSTATUS_FAILED) {
719                 USB_STOR_PRINTF("FAILED\n");
720                 return USB_STOR_TRANSPORT_FAILED;
721         }
722
723         return result;
724 }
725
726 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
727 {
728         int result,status;
729         ccb *psrb;
730         ccb reqsrb;
731         int retry,notready;
732
733         psrb=&reqsrb;
734         status=USB_STOR_TRANSPORT_GOOD;
735         retry=0;
736         notready=0;
737         /* issue the command */
738 do_retry:
739         result=usb_stor_CB_comdat(srb,us);
740         USB_STOR_PRINTF("command / Data returned %d, status %X\n",result,us->pusb_dev->status);
741         /* if this is an CBI Protocol, get IRQ */
742         if(us->protocol==US_PR_CBI) {
743                 status=usb_stor_CBI_get_status(srb,us);
744                 /* if the status is error, report it */
745                 if(status==USB_STOR_TRANSPORT_ERROR) {
746                         USB_STOR_PRINTF(" USB CBI Command Error\n");
747                         return status;
748                 }
749                 srb->sense_buf[12]=(unsigned char)(us->ip_data>>8);
750                 srb->sense_buf[13]=(unsigned char)(us->ip_data&0xff);
751                 if(!us->ip_data) {
752                 /* if the status is good, report it */
753                         if(status==USB_STOR_TRANSPORT_GOOD) {
754                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
755                                 return status;
756                         }
757                 }
758         }
759         /* do we have to issue an auto request? */
760         /* HERE we have to check the result */
761         if((result<0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
762                 USB_STOR_PRINTF("ERROR %X\n",us->pusb_dev->status);
763                 us->transport_reset(us);
764                 return USB_STOR_TRANSPORT_ERROR;
765         }
766         if((us->protocol==US_PR_CBI) &&
767                         ((srb->cmd[0]==SCSI_REQ_SENSE) ||
768                         (srb->cmd[0]==SCSI_INQUIRY))) { /* do not issue an autorequest after request sense */
769                 USB_STOR_PRINTF("No auto request and good\n");
770                 return USB_STOR_TRANSPORT_GOOD;
771         }
772         /* issue an request_sense */
773         memset(&psrb->cmd[0],0,12);
774         psrb->cmd[0]=SCSI_REQ_SENSE;
775         psrb->cmd[1]=srb->lun<<5;
776         psrb->cmd[4]=18;
777         psrb->datalen=18;
778         psrb->pdata=&srb->sense_buf[0];
779         psrb->cmdlen=12;
780         /* issue the command */
781         result=usb_stor_CB_comdat(psrb,us);
782         USB_STOR_PRINTF("auto request returned %d\n",result);
783         /* if this is an CBI Protocol, get IRQ */
784         if(us->protocol==US_PR_CBI) {
785                 status=usb_stor_CBI_get_status(psrb,us);
786         }
787         if((result<0)&&!(us->pusb_dev->status & USB_ST_STALLED)) {
788                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",us->pusb_dev->status);
789                 return USB_STOR_TRANSPORT_ERROR;
790         }
791         USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
792         /* Check the auto request result */
793         if((srb->sense_buf[2]==0) &&
794                  (srb->sense_buf[12]==0) &&
795                  (srb->sense_buf[13]==0)) /* ok, no sense */
796                 return USB_STOR_TRANSPORT_GOOD;
797         /* Check the auto request result */
798         switch(srb->sense_buf[2]) {
799         case 0x01: /* Recovered Error */
800                 return USB_STOR_TRANSPORT_GOOD;
801                 break;
802         case 0x02: /* Not Ready */
803                 if(notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
804                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X (NOT READY)\n",
805                                 srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
806                         return USB_STOR_TRANSPORT_FAILED;
807                 } else {
808                         wait_ms(100);
809                         goto do_retry;
810                 }
811                 break;
812         default:
813                 if(retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
814                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
815                                 srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
816                         return USB_STOR_TRANSPORT_FAILED;
817                 } else {
818                         goto do_retry;
819                 }
820                 break;
821         }
822         return USB_STOR_TRANSPORT_FAILED;
823 }
824
825
826 static int usb_inquiry(ccb *srb,struct us_data *ss)
827 {
828         int retry,i;
829         retry=5;
830         do {
831                 memset(&srb->cmd[0],0,12);
832                 srb->cmd[0]=SCSI_INQUIRY;
833                 srb->cmd[1]=srb->lun<<5;
834                 srb->cmd[4]=36;
835                 srb->datalen=36;
836                 srb->cmdlen=12;
837                 i=ss->transport(srb,ss);
838                 USB_STOR_PRINTF("inquiry returns %d\n",i);
839                 if(i==0)
840                         break;
841         } while(retry--);
842
843         if(!retry) {
844                 printf("error in inquiry\n");
845                 return -1;
846         }
847         return 0;
848 }
849
850 static int usb_request_sense(ccb *srb,struct us_data *ss)
851 {
852         char *ptr;
853
854         ptr=(char *)srb->pdata;
855         memset(&srb->cmd[0],0,12);
856         srb->cmd[0]=SCSI_REQ_SENSE;
857         srb->cmd[1]=srb->lun<<5;
858         srb->cmd[4]=18;
859         srb->datalen=18;
860         srb->pdata=&srb->sense_buf[0];
861         srb->cmdlen=12;
862         ss->transport(srb,ss);
863         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
864         srb->pdata=(uchar *)ptr;
865         return 0;
866 }
867
868 static int usb_test_unit_ready(ccb *srb,struct us_data *ss)
869 {
870         int retries = 10;
871
872         do {
873                 memset(&srb->cmd[0],0,12);
874                 srb->cmd[0]=SCSI_TST_U_RDY;
875                 srb->cmd[1]=srb->lun<<5;
876                 srb->datalen=0;
877                 srb->cmdlen=12;
878                 if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD) {
879                         return 0;
880                 }
881                 usb_request_sense (srb, ss);
882                 wait_ms (100);
883         } while(retries--);
884
885         return -1;
886 }
887
888 static int usb_read_capacity(ccb *srb,struct us_data *ss)
889 {
890         int retry;
891         retry = 3; /* retries */
892         do {
893                 memset(&srb->cmd[0],0,12);
894                 srb->cmd[0]=SCSI_RD_CAPAC;
895                 srb->cmd[1]=srb->lun<<5;
896                 srb->datalen=8;
897                 srb->cmdlen=12;
898                 if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD) {
899                         return 0;
900                 }
901         } while(retry--);
902
903         return -1;
904 }
905
906 static int usb_read_10(ccb *srb,struct us_data *ss, unsigned long start, unsigned short blocks)
907 {
908         memset(&srb->cmd[0],0,12);
909         srb->cmd[0]=SCSI_READ10;
910         srb->cmd[1]=srb->lun<<5;
911         srb->cmd[2]=((unsigned char) (start>>24))&0xff;
912         srb->cmd[3]=((unsigned char) (start>>16))&0xff;
913         srb->cmd[4]=((unsigned char) (start>>8))&0xff;
914         srb->cmd[5]=((unsigned char) (start))&0xff;
915         srb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
916         srb->cmd[8]=(unsigned char) blocks & 0xff;
917         srb->cmdlen=12;
918         USB_STOR_PRINTF("read10: start %lx blocks %x\n",start,blocks);
919         return ss->transport(srb,ss);
920 }
921
922
923 #ifdef CONFIG_USB_BIN_FIXUP
924 /*
925  * Some USB storage devices queried for SCSI identification data respond with
926  * binary strings, which if output to the console freeze the terminal. The
927  * workaround is to modify the vendor and product strings read from such
928  * device with proper values (as reported by 'usb info').
929  *
930  * Vendor and product length limits are taken from the definition of
931  * block_dev_desc_t in include/part.h.
932  */
933 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
934                                 unsigned char vendor[],
935                                 unsigned char product[]) {
936         const unsigned char max_vendor_len = 40;
937         const unsigned char max_product_len = 20;
938         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
939                 strncpy ((char *)vendor, "SMSC", max_vendor_len);
940                 strncpy ((char *)product, "Flash Media Cntrller", max_product_len);
941         }
942 }
943 #endif /* CONFIG_USB_BIN_FIXUP */
944
945 #define USB_MAX_READ_BLK 20
946
947 unsigned long usb_stor_read(int device, unsigned long blknr, unsigned long blkcnt, void *buffer)
948 {
949         unsigned long start,blks, buf_addr;
950         unsigned short smallblks;
951         struct usb_device *dev;
952         int retry,i;
953         ccb *srb = &usb_ccb;
954
955         if (blkcnt == 0)
956                 return 0;
957
958         device &= 0xff;
959         /* Setup  device
960          */
961         USB_STOR_PRINTF("\nusb_read: dev %d \n",device);
962         dev=NULL;
963         for(i=0;i<USB_MAX_DEVICE;i++) {
964                 dev=usb_get_dev_index(i);
965                 if(dev==NULL) {
966                         return 0;
967                 }
968                 if(dev->devnum==usb_dev_desc[device].target)
969                         break;
970         }
971
972         usb_disable_asynch(1); /* asynch transfer not allowed */
973         srb->lun=usb_dev_desc[device].lun;
974         buf_addr=(unsigned long)buffer;
975         start=blknr;
976         blks=blkcnt;
977         if(usb_test_unit_ready(srb,(struct us_data *)dev->privptr)) {
978                 printf("Device NOT ready\n   Request Sense returned %02X %02X %02X\n",
979                         srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
980                 return 0;
981         }
982         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks, buf_addr);
983         do {
984                 retry=2;
985                 srb->pdata=(unsigned char *)buf_addr;
986                 if(blks>USB_MAX_READ_BLK) {
987                         smallblks=USB_MAX_READ_BLK;
988                 } else {
989                         smallblks=(unsigned short) blks;
990                 }
991 retry_it:
992                 if(smallblks==USB_MAX_READ_BLK)
993                         usb_show_progress();
994                 srb->datalen=usb_dev_desc[device].blksz * smallblks;
995                 srb->pdata=(unsigned char *)buf_addr;
996                 if(usb_read_10(srb,(struct us_data *)dev->privptr, start, smallblks)) {
997                         USB_STOR_PRINTF("Read ERROR\n");
998                         usb_request_sense(srb,(struct us_data *)dev->privptr);
999                         if(retry--)
1000                                 goto retry_it;
1001                         blkcnt-=blks;
1002                         break;
1003                 }
1004                 start+=smallblks;
1005                 blks-=smallblks;
1006                 buf_addr+=srb->datalen;
1007         } while(blks!=0);
1008         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
1009         usb_disable_asynch(0); /* asynch transfer allowed */
1010         if(blkcnt>=USB_MAX_READ_BLK)
1011                 printf("\n");
1012         return(blkcnt);
1013 }
1014
1015
1016 /* Probe to see if a new device is actually a Storage device */
1017 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,struct us_data *ss)
1018 {
1019         struct usb_interface_descriptor *iface;
1020         int i;
1021         unsigned int flags = 0;
1022
1023         int protocol = 0;
1024         int subclass = 0;
1025
1026         /* let's examine the device now */
1027         iface = &dev->config.if_desc[ifnum];
1028
1029 #if 0
1030         /* this is the place to patch some storage devices */
1031         USB_STOR_PRINTF("iVendor %X iProduct %X\n",dev->descriptor.idVendor,dev->descriptor.idProduct);
1032         if ((dev->descriptor.idVendor) == 0x066b && (dev->descriptor.idProduct) == 0x0103) {
1033                 USB_STOR_PRINTF("patched for E-USB\n");
1034                 protocol = US_PR_CB;
1035                 subclass = US_SC_UFI;       /* an assumption */
1036         }
1037 #endif
1038
1039         if (dev->descriptor.bDeviceClass != 0 ||
1040                         iface->bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1041                         iface->bInterfaceSubClass < US_SC_MIN ||
1042                         iface->bInterfaceSubClass > US_SC_MAX) {
1043                 /* if it's not a mass storage, we go no further */
1044                 return 0;
1045         }
1046
1047         memset(ss, 0, sizeof(struct us_data));
1048
1049         /* At this point, we know we've got a live one */
1050         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1051
1052         /* Initialize the us_data structure with some useful info */
1053         ss->flags = flags;
1054         ss->ifnum = ifnum;
1055         ss->pusb_dev = dev;
1056         ss->attention_done = 0;
1057
1058         /* If the device has subclass and protocol, then use that.  Otherwise,
1059          * take data from the specific interface.
1060          */
1061         if (subclass) {
1062                 ss->subclass = subclass;
1063                 ss->protocol = protocol;
1064         } else {
1065                 ss->subclass = iface->bInterfaceSubClass;
1066                 ss->protocol = iface->bInterfaceProtocol;
1067         }
1068
1069         /* set the handler pointers based on the protocol */
1070         USB_STOR_PRINTF("Transport: ");
1071         switch (ss->protocol) {
1072         case US_PR_CB:
1073                 USB_STOR_PRINTF("Control/Bulk\n");
1074                 ss->transport = usb_stor_CB_transport;
1075                 ss->transport_reset = usb_stor_CB_reset;
1076                 break;
1077
1078         case US_PR_CBI:
1079                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1080                 ss->transport = usb_stor_CB_transport;
1081                 ss->transport_reset = usb_stor_CB_reset;
1082                 break;
1083         case US_PR_BULK:
1084                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1085                 ss->transport = usb_stor_BBB_transport;
1086                 ss->transport_reset = usb_stor_BBB_reset;
1087                 break;
1088         default:
1089                 printf("USB Storage Transport unknown / not yet implemented\n");
1090                 return 0;
1091                 break;
1092         }
1093
1094         /*
1095          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1096          * An optional interrupt is OK (necessary for CBI protocol).
1097          * We will ignore any others.
1098          */
1099         for (i = 0; i < iface->bNumEndpoints; i++) {
1100                 /* is it an BULK endpoint? */
1101                 if ((iface->ep_desc[i].bmAttributes &  USB_ENDPOINT_XFERTYPE_MASK)
1102                     == USB_ENDPOINT_XFER_BULK) {
1103                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1104                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1105                                         USB_ENDPOINT_NUMBER_MASK;
1106                         else
1107                                 ss->ep_out = iface->ep_desc[i].bEndpointAddress &
1108                                         USB_ENDPOINT_NUMBER_MASK;
1109                 }
1110
1111                 /* is it an interrupt endpoint? */
1112                 if ((iface->ep_desc[i].bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1113                     == USB_ENDPOINT_XFER_INT) {
1114                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1115                                 USB_ENDPOINT_NUMBER_MASK;
1116                         ss->irqinterval = iface->ep_desc[i].bInterval;
1117                 }
1118         }
1119         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1120                   ss->ep_in, ss->ep_out, ss->ep_int);
1121
1122         /* Do some basic sanity checks, and bail if we find a problem */
1123         if (usb_set_interface(dev, iface->bInterfaceNumber, 0) ||
1124             !ss->ep_in || !ss->ep_out ||
1125             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1126                 USB_STOR_PRINTF("Problems with device\n");
1127                 return 0;
1128         }
1129         /* set class specific stuff */
1130         /* We only handle certain protocols.  Currently, these are
1131          * the only ones.
1132          * The SFF8070 accepts the requests used in u-boot
1133          */
1134         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1135             ss->subclass != US_SC_8070) {
1136                 printf("Sorry, protocol %d not yet supported.\n",ss->subclass);
1137                 return 0;
1138         }
1139         if(ss->ep_int) { /* we had found an interrupt endpoint, prepare irq pipe */
1140                 /* set up the IRQ pipe and handler */
1141
1142                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1143                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1144                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1145                 dev->irq_handle=usb_stor_irq;
1146         }
1147         dev->privptr=(void *)ss;
1148         return 1;
1149 }
1150
1151 int usb_stor_get_info(struct usb_device *dev,struct us_data *ss,block_dev_desc_t *dev_desc)
1152 {
1153         unsigned char perq,modi;
1154         unsigned long cap[2];
1155         unsigned long *capacity,*blksz;
1156         ccb *pccb = &usb_ccb;
1157
1158         /* for some reasons a couple of devices would not survive this reset */
1159         if (
1160             /* Sony USM256E */
1161             (dev->descriptor.idVendor == 0x054c &&
1162              dev->descriptor.idProduct == 0x019e)
1163
1164             ||
1165             /* USB007 Mini-USB2 Flash Drive */
1166             (dev->descriptor.idVendor == 0x066f &&
1167              dev->descriptor.idProduct == 0x2010)
1168             ||
1169             /* SanDisk Corporation Cruzer Micro 20044318410546613953 */
1170             (dev->descriptor.idVendor == 0x0781 &&
1171              dev->descriptor.idProduct == 0x5151)
1172             )
1173                 USB_STOR_PRINTF("usb_stor_get_info: skipping RESET..\n");
1174         else
1175                 ss->transport_reset(ss);
1176
1177         pccb->pdata = usb_stor_buf;
1178
1179         dev_desc->target = dev->devnum;
1180         pccb->lun = dev_desc->lun;
1181         USB_STOR_PRINTF(" address %d\n",dev_desc->target);
1182
1183         if(usb_inquiry(pccb,ss))
1184                 return -1;
1185
1186         perq = usb_stor_buf[0];
1187         modi = usb_stor_buf[1];
1188         if((perq & 0x1f) == 0x1f) {
1189                 return 0; /* skip unknown devices */
1190         }
1191         if((modi&0x80) == 0x80) {/* drive is removable */
1192                 dev_desc->removable = 1;
1193         }
1194         memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
1195         memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
1196         memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
1197         dev_desc->vendor[8] = 0;
1198         dev_desc->product[16] = 0;
1199         dev_desc->revision[4] = 0;
1200 #ifdef CONFIG_USB_BIN_FIXUP
1201         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor, (uchar *)dev_desc->product);
1202 #endif /* CONFIG_USB_BIN_FIXUP */
1203         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n",usb_stor_buf[2],usb_stor_buf[3]);
1204         if(usb_test_unit_ready(pccb,ss)) {
1205                 printf("Device NOT ready\n   Request Sense returned %02X %02X %02X\n",pccb->sense_buf[2],pccb->sense_buf[12],pccb->sense_buf[13]);
1206                 if(dev_desc->removable == 1) {
1207                         dev_desc->type = perq;
1208                         return 1;
1209                 }
1210                 else
1211                         return 0;
1212         }
1213         pccb->pdata = (unsigned char *)&cap[0];
1214         memset(pccb->pdata,0,8);
1215         if(usb_read_capacity(pccb,ss) != 0) {
1216                 printf("READ_CAP ERROR\n");
1217                 cap[0] = 2880;
1218                 cap[1] = 0x200;
1219         }
1220         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n",cap[0],cap[1]);
1221 #if 0
1222         if(cap[0]>(0x200000 * 10)) /* greater than 10 GByte */
1223                 cap[0]>>=16;
1224 #endif
1225 #ifdef LITTLEENDIAN
1226         cap[0] = ((unsigned long)(
1227                 (((unsigned long)(cap[0]) & (unsigned long)0x000000ffUL) << 24) |
1228                 (((unsigned long)(cap[0]) & (unsigned long)0x0000ff00UL) <<  8) |
1229                 (((unsigned long)(cap[0]) & (unsigned long)0x00ff0000UL) >>  8) |
1230                 (((unsigned long)(cap[0]) & (unsigned long)0xff000000UL) >> 24) ));
1231         cap[1] = ((unsigned long)(
1232                 (((unsigned long)(cap[1]) & (unsigned long)0x000000ffUL) << 24) |
1233                 (((unsigned long)(cap[1]) & (unsigned long)0x0000ff00UL) <<  8) |
1234                 (((unsigned long)(cap[1]) & (unsigned long)0x00ff0000UL) >>  8) |
1235                 (((unsigned long)(cap[1]) & (unsigned long)0xff000000UL) >> 24) ));
1236 #endif
1237         /* this assumes bigendian! */
1238         cap[0] += 1;
1239         capacity = &cap[0];
1240         blksz = &cap[1];
1241         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",*capacity,*blksz);
1242         dev_desc->lba = *capacity;
1243         dev_desc->blksz = *blksz;
1244         dev_desc->type = perq;
1245         USB_STOR_PRINTF(" address %d\n",dev_desc->target);
1246         USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
1247
1248         init_part(dev_desc);
1249
1250         USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
1251         return 1;
1252 }
1253
1254 #endif /* CONFIG_USB_STORAGE */
1255 #endif