Added new ext fields to IFC
[oweals/u-boot.git] / common / usb_storage.c
1 /*
2  * Most of this source has been derived from the Linux USB
3  * project:
4  *   (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
5  *   (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org)
6  *   (c) 1999 Michael Gee (michael@linuxspecific.com)
7  *   (c) 2000 Yggdrasil Computing, Inc.
8  *
9  *
10  * Adapted for U-Boot:
11  *   (C) Copyright 2001 Denis Peter, MPL AG Switzerland
12  *
13  * For BBB support (C) Copyright 2003
14  * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
15  *
16  * BBB support based on /sys/dev/usb/umass.c from
17  * FreeBSD.
18  *
19  * See file CREDITS for list of people who contributed to this
20  * project.
21  *
22  * This program is free software; you can redistribute it and/or
23  * modify it under the terms of the GNU General Public License as
24  * published by the Free Software Foundation; either version 2 of
25  * the License, or (at your option) any later version.
26  *
27  * This program is distributed in the hope that it will be useful,
28  * but WITHOUT ANY WARRANTY; without even the implied warranty of
29  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
30  * GNU General Public License for more details.
31  *
32  * You should have received a copy of the GNU General Public License
33  * along with this program; if not, write to the Free Software
34  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
35  * MA 02111-1307 USA
36  *
37  */
38
39 /* Note:
40  * Currently only the CBI transport protocoll has been implemented, and it
41  * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
42  * transport protocoll may work as well.
43  */
44 /*
45  * New Note:
46  * Support for USB Mass Storage Devices (BBB) has been added. It has
47  * only been tested with USB memory sticks.
48  */
49
50
51 #include <common.h>
52 #include <command.h>
53 #include <asm/byteorder.h>
54 #include <asm/processor.h>
55
56 #include <part.h>
57 #include <usb.h>
58
59 #undef BBB_COMDAT_TRACE
60 #undef BBB_XPORT_TRACE
61
62 #ifdef  USB_STOR_DEBUG
63 #define USB_BLK_DEBUG   1
64 #else
65 #define USB_BLK_DEBUG   0
66 #endif
67
68 #define USB_STOR_PRINTF(fmt, args...)   debug_cond(USB_BLK_DEBUG, fmt, ##args)
69
70 #include <scsi.h>
71 /* direction table -- this indicates the direction of the data
72  * transfer for each command code -- a 1 indicates input
73  */
74 static const unsigned char us_direction[256/8] = {
75         0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
76         0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
77         0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
78         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
79 };
80 #define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
81
82 static ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN)));
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 /*
159  * The U-Boot EHCI driver cannot handle more than 5 page aligned buffers
160  * of 4096 bytes in a transfer without running itself out of qt_buffers
161  */
162 #define USB_MAX_XFER_BLK(start, blksz)  (((4096 * 5) - (start % 4096)) / blksz)
163
164 static struct us_data usb_stor[USB_MAX_STOR_DEV];
165
166
167 #define USB_STOR_TRANSPORT_GOOD    0
168 #define USB_STOR_TRANSPORT_FAILED -1
169 #define USB_STOR_TRANSPORT_ERROR  -2
170
171 int usb_stor_get_info(struct usb_device *dev, struct us_data *us,
172                       block_dev_desc_t *dev_desc);
173 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
174                       struct us_data *ss);
175 unsigned long usb_stor_read(int device, unsigned long blknr,
176                             unsigned long blkcnt, void *buffer);
177 unsigned long usb_stor_write(int device, unsigned long blknr,
178                              unsigned long blkcnt, const void *buffer);
179 struct usb_device * usb_get_dev_index(int index);
180 void uhci_show_temp_int_td(void);
181
182 #ifdef CONFIG_PARTITIONS
183 block_dev_desc_t *usb_stor_get_dev(int index)
184 {
185         return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
186 }
187 #endif
188
189 void usb_show_progress(void)
190 {
191         debug(".");
192 }
193
194 /*******************************************************************************
195  * show info on storage devices; 'usb start/init' must be invoked earlier
196  * as we only retrieve structures populated during devices initialization
197  */
198 int usb_stor_info(void)
199 {
200         int i;
201
202         if (usb_max_devs > 0) {
203                 for (i = 0; i < usb_max_devs; i++) {
204                         printf("  Device %d: ", i);
205                         dev_print(&usb_dev_desc[i]);
206                 }
207                 return 0;
208         }
209
210         printf("No storage devices, perhaps not 'usb start'ed..?\n");
211         return 1;
212 }
213
214 static unsigned int usb_get_max_lun(struct us_data *us)
215 {
216         int len;
217         ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
218         len = usb_control_msg(us->pusb_dev,
219                               usb_rcvctrlpipe(us->pusb_dev, 0),
220                               US_BBB_GET_MAX_LUN,
221                               USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
222                               0, us->ifnum,
223                               result, sizeof(char),
224                               USB_CNTL_TIMEOUT * 5);
225         USB_STOR_PRINTF("Get Max LUN -> len = %i, result = %i\n",
226                         len, (int) *result);
227         return (len > 0) ? *result : 0;
228 }
229
230 /*******************************************************************************
231  * scan the usb and reports device info
232  * to the user if mode = 1
233  * returns current device or -1 if no
234  */
235 int usb_stor_scan(int mode)
236 {
237         unsigned char i;
238         struct usb_device *dev;
239
240         if (mode == 1)
241                 printf("       scanning bus for storage devices... ");
242
243         usb_disable_asynch(1); /* asynch transfer not allowed */
244
245         for (i = 0; i < USB_MAX_STOR_DEV; i++) {
246                 memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
247                 usb_dev_desc[i].if_type = IF_TYPE_USB;
248                 usb_dev_desc[i].dev = i;
249                 usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
250                 usb_dev_desc[i].target = 0xff;
251                 usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
252                 usb_dev_desc[i].block_read = usb_stor_read;
253                 usb_dev_desc[i].block_write = usb_stor_write;
254         }
255
256         usb_max_devs = 0;
257         for (i = 0; i < USB_MAX_DEVICE; i++) {
258                 dev = usb_get_dev_index(i); /* get device */
259                 USB_STOR_PRINTF("i=%d\n", i);
260                 if (dev == NULL)
261                         break; /* no more devices available */
262
263                 if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
264                         /* OK, it's a storage device.  Iterate over its LUNs
265                          * and populate `usb_dev_desc'.
266                          */
267                         int lun, max_lun, start = usb_max_devs;
268
269                         max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
270                         for (lun = 0;
271                              lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
272                              lun++) {
273                                 usb_dev_desc[usb_max_devs].lun = lun;
274                                 if (usb_stor_get_info(dev, &usb_stor[start],
275                                                       &usb_dev_desc[usb_max_devs]) == 1) {
276                                 usb_max_devs++;
277                 }
278                         }
279                 }
280                 /* if storage device */
281                 if (usb_max_devs == USB_MAX_STOR_DEV) {
282                         printf("max USB Storage Device reached: %d stopping\n",
283                                 usb_max_devs);
284                         break;
285                 }
286         } /* for */
287
288         usb_disable_asynch(0); /* asynch transfer allowed */
289         printf("%d Storage Device(s) found\n", usb_max_devs);
290         if (usb_max_devs > 0)
291                 return 0;
292         return -1;
293 }
294
295 static int usb_stor_irq(struct usb_device *dev)
296 {
297         struct us_data *us;
298         us = (struct us_data *)dev->privptr;
299
300         if (us->ip_wanted)
301                 us->ip_wanted = 0;
302         return 0;
303 }
304
305
306 #ifdef  USB_STOR_DEBUG
307
308 static void usb_show_srb(ccb *pccb)
309 {
310         int i;
311         printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen);
312         for (i = 0; i < 12; i++)
313                 printf("%02X ", pccb->cmd[i]);
314         printf("\n");
315 }
316
317 static void display_int_status(unsigned long tmp)
318 {
319         printf("Status: %s %s %s %s %s %s %s\n",
320                 (tmp & USB_ST_ACTIVE) ? "Active" : "",
321                 (tmp & USB_ST_STALLED) ? "Stalled" : "",
322                 (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
323                 (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
324                 (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
325                 (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
326                 (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
327 }
328 #endif
329 /***********************************************************************
330  * Data transfer routines
331  ***********************************************************************/
332
333 static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
334 {
335         int max_size;
336         int this_xfer;
337         int result;
338         int partial;
339         int maxtry;
340         int stat;
341
342         /* determine the maximum packet size for these transfers */
343         max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
344
345         /* while we have data left to transfer */
346         while (length) {
347
348                 /* calculate how long this will be -- maximum or a remainder */
349                 this_xfer = length > max_size ? max_size : length;
350                 length -= this_xfer;
351
352                 /* setup the retry counter */
353                 maxtry = 10;
354
355                 /* set up the transfer loop */
356                 do {
357                         /* transfer the data */
358                         USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
359                                   (unsigned int)buf, this_xfer, 11 - maxtry);
360                         result = usb_bulk_msg(us->pusb_dev, pipe, buf,
361                                               this_xfer, &partial,
362                                               USB_CNTL_TIMEOUT * 5);
363                         USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
364                                   result, partial, this_xfer);
365                         if (us->pusb_dev->status != 0) {
366                                 /* if we stall, we need to clear it before
367                                  * we go on
368                                  */
369 #ifdef USB_STOR_DEBUG
370                                 display_int_status(us->pusb_dev->status);
371 #endif
372                                 if (us->pusb_dev->status & USB_ST_STALLED) {
373                                         USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
374                                         stat = us->pusb_dev->status;
375                                         usb_clear_halt(us->pusb_dev, pipe);
376                                         us->pusb_dev->status = stat;
377                                         if (this_xfer == partial) {
378                                                 USB_STOR_PRINTF("bulk transferred with error %lX, but data ok\n", us->pusb_dev->status);
379                                                 return 0;
380                                         }
381                                         else
382                                                 return result;
383                                 }
384                                 if (us->pusb_dev->status & USB_ST_NAK_REC) {
385                                         USB_STOR_PRINTF("Device NAKed bulk_msg\n");
386                                         return result;
387                                 }
388                                 USB_STOR_PRINTF("bulk transferred with error");
389                                 if (this_xfer == partial) {
390                                         USB_STOR_PRINTF(" %ld, but data ok\n",
391                                                         us->pusb_dev->status);
392                                         return 0;
393                                 }
394                                 /* if our try counter reaches 0, bail out */
395                                         USB_STOR_PRINTF(" %ld, data %d\n",
396                                                 us->pusb_dev->status, partial);
397                                 if (!maxtry--)
398                                                 return result;
399                         }
400                         /* update to show what data was transferred */
401                         this_xfer -= partial;
402                         buf += partial;
403                         /* continue until this transfer is done */
404                 } while (this_xfer);
405         }
406
407         /* if we get here, we're done and successful */
408         return 0;
409 }
410
411 static int usb_stor_BBB_reset(struct us_data *us)
412 {
413         int result;
414         unsigned int pipe;
415
416         /*
417          * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
418          *
419          * For Reset Recovery the host shall issue in the following order:
420          * a) a Bulk-Only Mass Storage Reset
421          * b) a Clear Feature HALT to the Bulk-In endpoint
422          * c) a Clear Feature HALT to the Bulk-Out endpoint
423          *
424          * This is done in 3 steps.
425          *
426          * If the reset doesn't succeed, the device should be port reset.
427          *
428          * This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
429          */
430         USB_STOR_PRINTF("BBB_reset\n");
431         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
432                                  US_BBB_RESET,
433                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
434                                  0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5);
435
436         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
437                 USB_STOR_PRINTF("RESET:stall\n");
438                 return -1;
439         }
440
441         /* long wait for reset */
442         mdelay(150);
443         USB_STOR_PRINTF("BBB_reset result %d: status %lX reset\n", result,
444                         us->pusb_dev->status);
445         pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
446         result = usb_clear_halt(us->pusb_dev, pipe);
447         /* long wait for reset */
448         mdelay(150);
449         USB_STOR_PRINTF("BBB_reset result %d: status %lX clearing IN endpoint\n",
450                         result, us->pusb_dev->status);
451         /* long wait for reset */
452         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
453         result = usb_clear_halt(us->pusb_dev, pipe);
454         mdelay(150);
455         USB_STOR_PRINTF("BBB_reset result %d: status %lX"
456                         " clearing OUT endpoint\n", result,
457                         us->pusb_dev->status);
458         USB_STOR_PRINTF("BBB_reset done\n");
459         return 0;
460 }
461
462 /* FIXME: this reset function doesn't really reset the port, and it
463  * should. Actually it should probably do what it's doing here, and
464  * reset the port physically
465  */
466 static int usb_stor_CB_reset(struct us_data *us)
467 {
468         unsigned char cmd[12];
469         int result;
470
471         USB_STOR_PRINTF("CB_reset\n");
472         memset(cmd, 0xff, sizeof(cmd));
473         cmd[0] = SCSI_SEND_DIAG;
474         cmd[1] = 4;
475         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
476                                  US_CBI_ADSC,
477                                  USB_TYPE_CLASS | USB_RECIP_INTERFACE,
478                                  0, us->ifnum, cmd, sizeof(cmd),
479                                  USB_CNTL_TIMEOUT * 5);
480
481         /* long wait for reset */
482         mdelay(1500);
483         USB_STOR_PRINTF("CB_reset result %d: status %lX"
484                         " clearing endpoint halt\n", result,
485                         us->pusb_dev->status);
486         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
487         usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
488
489         USB_STOR_PRINTF("CB_reset done\n");
490         return 0;
491 }
492
493 /*
494  * Set up the command for a BBB device. Note that the actual SCSI
495  * command is copied into cbw.CBWCDB.
496  */
497 int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
498 {
499         int result;
500         int actlen;
501         int dir_in;
502         unsigned int pipe;
503         ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1);
504
505         dir_in = US_DIRECTION(srb->cmd[0]);
506
507 #ifdef BBB_COMDAT_TRACE
508         printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n",
509                 dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen,
510                 srb->pdata);
511         if (srb->cmdlen) {
512                 for (result = 0; result < srb->cmdlen; result++)
513                         printf("cmd[%d] %#x ", result, srb->cmd[result]);
514                 printf("\n");
515         }
516 #endif
517         /* sanity checks */
518         if (!(srb->cmdlen <= CBWCDBLENGTH)) {
519                 USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n");
520                 return -1;
521         }
522
523         /* always OUT to the ep */
524         pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
525
526         cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
527         cbw->dCBWTag = cpu_to_le32(CBWTag++);
528         cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
529         cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
530         cbw->bCBWLUN = srb->lun;
531         cbw->bCDBLength = srb->cmdlen;
532         /* copy the command data into the CBW command data buffer */
533         /* DST SRC LEN!!! */
534         memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
535         result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
536                               &actlen, USB_CNTL_TIMEOUT * 5);
537         if (result < 0)
538                 USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n");
539         return result;
540 }
541
542 /* FIXME: we also need a CBI_command which sets up the completion
543  * interrupt, and waits for it
544  */
545 int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
546 {
547         int result = 0;
548         int dir_in, retry;
549         unsigned int pipe;
550         unsigned long status;
551
552         retry = 5;
553         dir_in = US_DIRECTION(srb->cmd[0]);
554
555         if (dir_in)
556                 pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
557         else
558                 pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
559
560         while (retry--) {
561                 USB_STOR_PRINTF("CBI gets a command: Try %d\n", 5 - retry);
562 #ifdef USB_STOR_DEBUG
563                 usb_show_srb(srb);
564 #endif
565                 /* let's send the command via the control pipe */
566                 result = usb_control_msg(us->pusb_dev,
567                                          usb_sndctrlpipe(us->pusb_dev , 0),
568                                          US_CBI_ADSC,
569                                          USB_TYPE_CLASS | USB_RECIP_INTERFACE,
570                                          0, us->ifnum,
571                                          srb->cmd, srb->cmdlen,
572                                          USB_CNTL_TIMEOUT * 5);
573                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
574                                 " status %lX\n", result, us->pusb_dev->status);
575                 /* check the return code for the command */
576                 if (result < 0) {
577                         if (us->pusb_dev->status & USB_ST_STALLED) {
578                                 status = us->pusb_dev->status;
579                                 USB_STOR_PRINTF(" stall during command found,"
580                                                 " clear pipe\n");
581                                 usb_clear_halt(us->pusb_dev,
582                                               usb_sndctrlpipe(us->pusb_dev, 0));
583                                 us->pusb_dev->status = status;
584                         }
585                         USB_STOR_PRINTF(" error during command %02X"
586                                         " Stat = %lX\n", srb->cmd[0],
587                                         us->pusb_dev->status);
588                         return result;
589                 }
590                 /* transfer the data payload for this command, if one exists*/
591
592                 USB_STOR_PRINTF("CB_transport: control msg returned %d,"
593                                 " direction is %s to go 0x%lx\n", result,
594                                 dir_in ? "IN" : "OUT", srb->datalen);
595                 if (srb->datalen) {
596                         result = us_one_transfer(us, pipe, (char *)srb->pdata,
597                                                  srb->datalen);
598                         USB_STOR_PRINTF("CBI attempted to transfer data,"
599                                         " result is %d status %lX, len %d\n",
600                                         result, us->pusb_dev->status,
601                                         us->pusb_dev->act_len);
602                         if (!(us->pusb_dev->status & USB_ST_NAK_REC))
603                                 break;
604                 } /* if (srb->datalen) */
605                 else
606                         break;
607         }
608         /* return result */
609
610         return result;
611 }
612
613
614 int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
615 {
616         int timeout;
617
618         us->ip_wanted = 1;
619         submit_int_msg(us->pusb_dev, us->irqpipe,
620                         (void *) &us->ip_data, us->irqmaxp, us->irqinterval);
621         timeout = 1000;
622         while (timeout--) {
623                 if ((volatile int *) us->ip_wanted == 0)
624                         break;
625                 mdelay(10);
626         }
627         if (us->ip_wanted) {
628                 printf("        Did not get interrupt on CBI\n");
629                 us->ip_wanted = 0;
630                 return USB_STOR_TRANSPORT_ERROR;
631         }
632         USB_STOR_PRINTF
633                 ("Got interrupt data 0x%x, transfered %d status 0x%lX\n",
634                  us->ip_data, us->pusb_dev->irq_act_len,
635                  us->pusb_dev->irq_status);
636         /* UFI gives us ASC and ASCQ, like a request sense */
637         if (us->subclass == US_SC_UFI) {
638                 if (srb->cmd[0] == SCSI_REQ_SENSE ||
639                     srb->cmd[0] == SCSI_INQUIRY)
640                         return USB_STOR_TRANSPORT_GOOD; /* Good */
641                 else if (us->ip_data)
642                         return USB_STOR_TRANSPORT_FAILED;
643                 else
644                         return USB_STOR_TRANSPORT_GOOD;
645         }
646         /* otherwise, we interpret the data normally */
647         switch (us->ip_data) {
648         case 0x0001:
649                 return USB_STOR_TRANSPORT_GOOD;
650         case 0x0002:
651                 return USB_STOR_TRANSPORT_FAILED;
652         default:
653                 return USB_STOR_TRANSPORT_ERROR;
654         }                       /* switch */
655         return USB_STOR_TRANSPORT_ERROR;
656 }
657
658 #define USB_TRANSPORT_UNKNOWN_RETRY 5
659 #define USB_TRANSPORT_NOT_READY_RETRY 10
660
661 /* clear a stall on an endpoint - special for BBB devices */
662 int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
663 {
664         int result;
665
666         /* ENDPOINT_HALT = 0, so set value to 0 */
667         result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
668                                 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
669                                 0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5);
670         return result;
671 }
672
673 int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
674 {
675         int result, retry;
676         int dir_in;
677         int actlen, data_actlen;
678         unsigned int pipe, pipein, pipeout;
679         ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1);
680 #ifdef BBB_XPORT_TRACE
681         unsigned char *ptr;
682         int index;
683 #endif
684
685         dir_in = US_DIRECTION(srb->cmd[0]);
686
687         /* COMMAND phase */
688         USB_STOR_PRINTF("COMMAND phase\n");
689         result = usb_stor_BBB_comdat(srb, us);
690         if (result < 0) {
691                 USB_STOR_PRINTF("failed to send CBW status %ld\n",
692                         us->pusb_dev->status);
693                 usb_stor_BBB_reset(us);
694                 return USB_STOR_TRANSPORT_FAILED;
695         }
696         mdelay(5);
697         pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
698         pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
699         /* DATA phase + error handling */
700         data_actlen = 0;
701         /* no data, go immediately to the STATUS phase */
702         if (srb->datalen == 0)
703                 goto st;
704         USB_STOR_PRINTF("DATA phase\n");
705         if (dir_in)
706                 pipe = pipein;
707         else
708                 pipe = pipeout;
709         result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
710                               &data_actlen, USB_CNTL_TIMEOUT * 5);
711         /* special handling of STALL in DATA phase */
712         if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
713                 USB_STOR_PRINTF("DATA:stall\n");
714                 /* clear the STALL on the endpoint */
715                 result = usb_stor_BBB_clear_endpt_stall(us,
716                                         dir_in ? us->ep_in : us->ep_out);
717                 if (result >= 0)
718                         /* continue on to STATUS phase */
719                         goto st;
720         }
721         if (result < 0) {
722                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
723                         us->pusb_dev->status);
724                 usb_stor_BBB_reset(us);
725                 return USB_STOR_TRANSPORT_FAILED;
726         }
727 #ifdef BBB_XPORT_TRACE
728         for (index = 0; index < data_actlen; index++)
729                 printf("pdata[%d] %#x ", index, srb->pdata[index]);
730         printf("\n");
731 #endif
732         /* STATUS phase + error handling */
733 st:
734         retry = 0;
735 again:
736         USB_STOR_PRINTF("STATUS phase\n");
737         result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
738                                 &actlen, USB_CNTL_TIMEOUT*5);
739
740         /* special handling of STALL in STATUS phase */
741         if ((result < 0) && (retry < 1) &&
742             (us->pusb_dev->status & USB_ST_STALLED)) {
743                 USB_STOR_PRINTF("STATUS:stall\n");
744                 /* clear the STALL on the endpoint */
745                 result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
746                 if (result >= 0 && (retry++ < 1))
747                         /* do a retry */
748                         goto again;
749         }
750         if (result < 0) {
751                 USB_STOR_PRINTF("usb_bulk_msg error status %ld\n",
752                         us->pusb_dev->status);
753                 usb_stor_BBB_reset(us);
754                 return USB_STOR_TRANSPORT_FAILED;
755         }
756 #ifdef BBB_XPORT_TRACE
757         ptr = (unsigned char *)csw;
758         for (index = 0; index < UMASS_BBB_CSW_SIZE; index++)
759                 printf("ptr[%d] %#x ", index, ptr[index]);
760         printf("\n");
761 #endif
762         /* misuse pipe to get the residue */
763         pipe = le32_to_cpu(csw->dCSWDataResidue);
764         if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
765                 pipe = srb->datalen - data_actlen;
766         if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
767                 USB_STOR_PRINTF("!CSWSIGNATURE\n");
768                 usb_stor_BBB_reset(us);
769                 return USB_STOR_TRANSPORT_FAILED;
770         } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
771                 USB_STOR_PRINTF("!Tag\n");
772                 usb_stor_BBB_reset(us);
773                 return USB_STOR_TRANSPORT_FAILED;
774         } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
775                 USB_STOR_PRINTF(">PHASE\n");
776                 usb_stor_BBB_reset(us);
777                 return USB_STOR_TRANSPORT_FAILED;
778         } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
779                 USB_STOR_PRINTF("=PHASE\n");
780                 usb_stor_BBB_reset(us);
781                 return USB_STOR_TRANSPORT_FAILED;
782         } else if (data_actlen > srb->datalen) {
783                 USB_STOR_PRINTF("transferred %dB instead of %ldB\n",
784                         data_actlen, srb->datalen);
785                 return USB_STOR_TRANSPORT_FAILED;
786         } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
787                 USB_STOR_PRINTF("FAILED\n");
788                 return USB_STOR_TRANSPORT_FAILED;
789         }
790
791         return result;
792 }
793
794 int usb_stor_CB_transport(ccb *srb, struct us_data *us)
795 {
796         int result, status;
797         ccb *psrb;
798         ccb reqsrb;
799         int retry, notready;
800
801         psrb = &reqsrb;
802         status = USB_STOR_TRANSPORT_GOOD;
803         retry = 0;
804         notready = 0;
805         /* issue the command */
806 do_retry:
807         result = usb_stor_CB_comdat(srb, us);
808         USB_STOR_PRINTF("command / Data returned %d, status %lX\n",
809                         result, us->pusb_dev->status);
810         /* if this is an CBI Protocol, get IRQ */
811         if (us->protocol == US_PR_CBI) {
812                 status = usb_stor_CBI_get_status(srb, us);
813                 /* if the status is error, report it */
814                 if (status == USB_STOR_TRANSPORT_ERROR) {
815                         USB_STOR_PRINTF(" USB CBI Command Error\n");
816                         return status;
817                 }
818                 srb->sense_buf[12] = (unsigned char)(us->ip_data >> 8);
819                 srb->sense_buf[13] = (unsigned char)(us->ip_data & 0xff);
820                 if (!us->ip_data) {
821                         /* if the status is good, report it */
822                         if (status == USB_STOR_TRANSPORT_GOOD) {
823                                 USB_STOR_PRINTF(" USB CBI Command Good\n");
824                                 return status;
825                         }
826                 }
827         }
828         /* do we have to issue an auto request? */
829         /* HERE we have to check the result */
830         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
831                 USB_STOR_PRINTF("ERROR %lX\n", us->pusb_dev->status);
832                 us->transport_reset(us);
833                 return USB_STOR_TRANSPORT_ERROR;
834         }
835         if ((us->protocol == US_PR_CBI) &&
836             ((srb->cmd[0] == SCSI_REQ_SENSE) ||
837             (srb->cmd[0] == SCSI_INQUIRY))) {
838                 /* do not issue an autorequest after request sense */
839                 USB_STOR_PRINTF("No auto request and good\n");
840                 return USB_STOR_TRANSPORT_GOOD;
841         }
842         /* issue an request_sense */
843         memset(&psrb->cmd[0], 0, 12);
844         psrb->cmd[0] = SCSI_REQ_SENSE;
845         psrb->cmd[1] = srb->lun << 5;
846         psrb->cmd[4] = 18;
847         psrb->datalen = 18;
848         psrb->pdata = &srb->sense_buf[0];
849         psrb->cmdlen = 12;
850         /* issue the command */
851         result = usb_stor_CB_comdat(psrb, us);
852         USB_STOR_PRINTF("auto request returned %d\n", result);
853         /* if this is an CBI Protocol, get IRQ */
854         if (us->protocol == US_PR_CBI)
855                 status = usb_stor_CBI_get_status(psrb, us);
856
857         if ((result < 0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
858                 USB_STOR_PRINTF(" AUTO REQUEST ERROR %ld\n",
859                                 us->pusb_dev->status);
860                 return USB_STOR_TRANSPORT_ERROR;
861         }
862         USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
863                         srb->sense_buf[0], srb->sense_buf[2],
864                         srb->sense_buf[12], srb->sense_buf[13]);
865         /* Check the auto request result */
866         if ((srb->sense_buf[2] == 0) &&
867             (srb->sense_buf[12] == 0) &&
868             (srb->sense_buf[13] == 0)) {
869                 /* ok, no sense */
870                 return USB_STOR_TRANSPORT_GOOD;
871         }
872
873         /* Check the auto request result */
874         switch (srb->sense_buf[2]) {
875         case 0x01:
876                 /* Recovered Error */
877                 return USB_STOR_TRANSPORT_GOOD;
878                 break;
879         case 0x02:
880                 /* Not Ready */
881                 if (notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
882                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
883                                " 0x%02X (NOT READY)\n", srb->cmd[0],
884                                 srb->sense_buf[0], srb->sense_buf[2],
885                                 srb->sense_buf[12], srb->sense_buf[13]);
886                         return USB_STOR_TRANSPORT_FAILED;
887                 } else {
888                         mdelay(100);
889                         goto do_retry;
890                 }
891                 break;
892         default:
893                 if (retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
894                         printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X"
895                                " 0x%02X\n", srb->cmd[0], srb->sense_buf[0],
896                                 srb->sense_buf[2], srb->sense_buf[12],
897                                 srb->sense_buf[13]);
898                         return USB_STOR_TRANSPORT_FAILED;
899                 } else
900                         goto do_retry;
901                 break;
902         }
903         return USB_STOR_TRANSPORT_FAILED;
904 }
905
906
907 static int usb_inquiry(ccb *srb, struct us_data *ss)
908 {
909         int retry, i;
910         retry = 5;
911         do {
912                 memset(&srb->cmd[0], 0, 12);
913                 srb->cmd[0] = SCSI_INQUIRY;
914                 srb->cmd[1] = srb->lun << 5;
915                 srb->cmd[4] = 36;
916                 srb->datalen = 36;
917                 srb->cmdlen = 12;
918                 i = ss->transport(srb, ss);
919                 USB_STOR_PRINTF("inquiry returns %d\n", i);
920                 if (i == 0)
921                         break;
922         } while (--retry);
923
924         if (!retry) {
925                 printf("error in inquiry\n");
926                 return -1;
927         }
928         return 0;
929 }
930
931 static int usb_request_sense(ccb *srb, struct us_data *ss)
932 {
933         char *ptr;
934
935         ptr = (char *)srb->pdata;
936         memset(&srb->cmd[0], 0, 12);
937         srb->cmd[0] = SCSI_REQ_SENSE;
938         srb->cmd[1] = srb->lun << 5;
939         srb->cmd[4] = 18;
940         srb->datalen = 18;
941         srb->pdata = &srb->sense_buf[0];
942         srb->cmdlen = 12;
943         ss->transport(srb, ss);
944         USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",
945                         srb->sense_buf[2], srb->sense_buf[12],
946                         srb->sense_buf[13]);
947         srb->pdata = (uchar *)ptr;
948         return 0;
949 }
950
951 static int usb_test_unit_ready(ccb *srb, struct us_data *ss)
952 {
953         int retries = 10;
954
955         do {
956                 memset(&srb->cmd[0], 0, 12);
957                 srb->cmd[0] = SCSI_TST_U_RDY;
958                 srb->cmd[1] = srb->lun << 5;
959                 srb->datalen = 0;
960                 srb->cmdlen = 12;
961                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
962                         return 0;
963                 usb_request_sense(srb, ss);
964                 mdelay(100);
965         } while (retries--);
966
967         return -1;
968 }
969
970 static int usb_read_capacity(ccb *srb, struct us_data *ss)
971 {
972         int retry;
973         /* XXX retries */
974         retry = 3;
975         do {
976                 memset(&srb->cmd[0], 0, 12);
977                 srb->cmd[0] = SCSI_RD_CAPAC;
978                 srb->cmd[1] = srb->lun << 5;
979                 srb->datalen = 8;
980                 srb->cmdlen = 12;
981                 if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
982                         return 0;
983         } while (retry--);
984
985         return -1;
986 }
987
988 static int usb_read_10(ccb *srb, struct us_data *ss, unsigned long start,
989                        unsigned short blocks)
990 {
991         memset(&srb->cmd[0], 0, 12);
992         srb->cmd[0] = SCSI_READ10;
993         srb->cmd[1] = srb->lun << 5;
994         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
995         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
996         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
997         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
998         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
999         srb->cmd[8] = (unsigned char) blocks & 0xff;
1000         srb->cmdlen = 12;
1001         USB_STOR_PRINTF("read10: start %lx blocks %x\n", start, blocks);
1002         return ss->transport(srb, ss);
1003 }
1004
1005 static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
1006                         unsigned short blocks)
1007 {
1008         memset(&srb->cmd[0], 0, 12);
1009         srb->cmd[0] = SCSI_WRITE10;
1010         srb->cmd[1] = srb->lun << 5;
1011         srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
1012         srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
1013         srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
1014         srb->cmd[5] = ((unsigned char) (start)) & 0xff;
1015         srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
1016         srb->cmd[8] = (unsigned char) blocks & 0xff;
1017         srb->cmdlen = 12;
1018         USB_STOR_PRINTF("write10: start %lx blocks %x\n", start, blocks);
1019         return ss->transport(srb, ss);
1020 }
1021
1022
1023 #ifdef CONFIG_USB_BIN_FIXUP
1024 /*
1025  * Some USB storage devices queried for SCSI identification data respond with
1026  * binary strings, which if output to the console freeze the terminal. The
1027  * workaround is to modify the vendor and product strings read from such
1028  * device with proper values (as reported by 'usb info').
1029  *
1030  * Vendor and product length limits are taken from the definition of
1031  * block_dev_desc_t in include/part.h.
1032  */
1033 static void usb_bin_fixup(struct usb_device_descriptor descriptor,
1034                                 unsigned char vendor[],
1035                                 unsigned char product[]) {
1036         const unsigned char max_vendor_len = 40;
1037         const unsigned char max_product_len = 20;
1038         if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
1039                 strncpy((char *)vendor, "SMSC", max_vendor_len);
1040                 strncpy((char *)product, "Flash Media Cntrller",
1041                         max_product_len);
1042         }
1043 }
1044 #endif /* CONFIG_USB_BIN_FIXUP */
1045
1046 unsigned long usb_stor_read(int device, unsigned long blknr,
1047                             unsigned long blkcnt, void *buffer)
1048 {
1049         unsigned long start, blks, buf_addr, max_xfer_blk;
1050         unsigned short smallblks;
1051         struct usb_device *dev;
1052         struct us_data *ss;
1053         int retry, i;
1054         ccb *srb = &usb_ccb;
1055
1056         if (blkcnt == 0)
1057                 return 0;
1058
1059         device &= 0xff;
1060         /* Setup  device */
1061         USB_STOR_PRINTF("\nusb_read: dev %d \n", device);
1062         dev = NULL;
1063         for (i = 0; i < USB_MAX_DEVICE; i++) {
1064                 dev = usb_get_dev_index(i);
1065                 if (dev == NULL)
1066                         return 0;
1067                 if (dev->devnum == usb_dev_desc[device].target)
1068                         break;
1069         }
1070         ss = (struct us_data *)dev->privptr;
1071
1072         usb_disable_asynch(1); /* asynch transfer not allowed */
1073         srb->lun = usb_dev_desc[device].lun;
1074         buf_addr = (unsigned long)buffer;
1075         start = blknr;
1076         blks = blkcnt;
1077         if (usb_test_unit_ready(srb, ss)) {
1078                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1079                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1080                        srb->sense_buf[13]);
1081                 return 0;
1082         }
1083
1084         USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx"
1085                         " buffer %lx\n", device, start, blks, buf_addr);
1086
1087         do {
1088                 /* XXX need some comment here */
1089                 retry = 2;
1090                 srb->pdata = (unsigned char *)buf_addr;
1091                 max_xfer_blk = USB_MAX_XFER_BLK(buf_addr,
1092                                                 usb_dev_desc[device].blksz);
1093                 if (blks > max_xfer_blk)
1094                         smallblks = (unsigned short) max_xfer_blk;
1095                 else
1096                         smallblks = (unsigned short) blks;
1097 retry_it:
1098                 if (smallblks == max_xfer_blk)
1099                         usb_show_progress();
1100                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1101                 srb->pdata = (unsigned char *)buf_addr;
1102                 if (usb_read_10(srb, ss, start, smallblks)) {
1103                         USB_STOR_PRINTF("Read ERROR\n");
1104                         usb_request_sense(srb, ss);
1105                         if (retry--)
1106                                 goto retry_it;
1107                         blkcnt -= blks;
1108                         break;
1109                 }
1110                 start += smallblks;
1111                 blks -= smallblks;
1112                 buf_addr += srb->datalen;
1113         } while (blks != 0);
1114
1115         USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",
1116                         start, smallblks, buf_addr);
1117
1118         usb_disable_asynch(0); /* asynch transfer allowed */
1119         if (blkcnt >= max_xfer_blk)
1120                 debug("\n");
1121         return blkcnt;
1122 }
1123
1124 unsigned long usb_stor_write(int device, unsigned long blknr,
1125                                 unsigned long blkcnt, const void *buffer)
1126 {
1127         unsigned long start, blks, buf_addr, max_xfer_blk;
1128         unsigned short smallblks;
1129         struct usb_device *dev;
1130         struct us_data *ss;
1131         int retry, i;
1132         ccb *srb = &usb_ccb;
1133
1134         if (blkcnt == 0)
1135                 return 0;
1136
1137         device &= 0xff;
1138         /* Setup  device */
1139         USB_STOR_PRINTF("\nusb_write: dev %d \n", device);
1140         dev = NULL;
1141         for (i = 0; i < USB_MAX_DEVICE; i++) {
1142                 dev = usb_get_dev_index(i);
1143                 if (dev == NULL)
1144                         return 0;
1145                 if (dev->devnum == usb_dev_desc[device].target)
1146                         break;
1147         }
1148         ss = (struct us_data *)dev->privptr;
1149
1150         usb_disable_asynch(1); /* asynch transfer not allowed */
1151
1152         srb->lun = usb_dev_desc[device].lun;
1153         buf_addr = (unsigned long)buffer;
1154         start = blknr;
1155         blks = blkcnt;
1156         if (usb_test_unit_ready(srb, ss)) {
1157                 printf("Device NOT ready\n   Request Sense returned %02X %02X"
1158                        " %02X\n", srb->sense_buf[2], srb->sense_buf[12],
1159                         srb->sense_buf[13]);
1160                 return 0;
1161         }
1162
1163         USB_STOR_PRINTF("\nusb_write: dev %d startblk %lx, blccnt %lx"
1164                         " buffer %lx\n", device, start, blks, buf_addr);
1165
1166         do {
1167                 /* If write fails retry for max retry count else
1168                  * return with number of blocks written successfully.
1169                  */
1170                 retry = 2;
1171                 srb->pdata = (unsigned char *)buf_addr;
1172                 max_xfer_blk = USB_MAX_XFER_BLK(buf_addr,
1173                                                 usb_dev_desc[device].blksz);
1174                 if (blks > max_xfer_blk)
1175                         smallblks = (unsigned short) max_xfer_blk;
1176                 else
1177                         smallblks = (unsigned short) blks;
1178 retry_it:
1179                 if (smallblks == max_xfer_blk)
1180                         usb_show_progress();
1181                 srb->datalen = usb_dev_desc[device].blksz * smallblks;
1182                 srb->pdata = (unsigned char *)buf_addr;
1183                 if (usb_write_10(srb, ss, start, smallblks)) {
1184                         USB_STOR_PRINTF("Write ERROR\n");
1185                         usb_request_sense(srb, ss);
1186                         if (retry--)
1187                                 goto retry_it;
1188                         blkcnt -= blks;
1189                         break;
1190                 }
1191                 start += smallblks;
1192                 blks -= smallblks;
1193                 buf_addr += srb->datalen;
1194         } while (blks != 0);
1195
1196         USB_STOR_PRINTF("usb_write: end startblk %lx, blccnt %x buffer %lx\n",
1197                         start, smallblks, buf_addr);
1198
1199         usb_disable_asynch(0); /* asynch transfer allowed */
1200         if (blkcnt >= max_xfer_blk)
1201                 debug("\n");
1202         return blkcnt;
1203
1204 }
1205
1206 /* Probe to see if a new device is actually a Storage device */
1207 int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
1208                       struct us_data *ss)
1209 {
1210         struct usb_interface *iface;
1211         int i;
1212         unsigned int flags = 0;
1213
1214         int protocol = 0;
1215         int subclass = 0;
1216
1217         /* let's examine the device now */
1218         iface = &dev->config.if_desc[ifnum];
1219
1220 #if 0
1221         /* this is the place to patch some storage devices */
1222         USB_STOR_PRINTF("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
1223                         dev->descriptor.idProduct);
1224
1225         if ((dev->descriptor.idVendor) == 0x066b &&
1226             (dev->descriptor.idProduct) == 0x0103) {
1227                 USB_STOR_PRINTF("patched for E-USB\n");
1228                 protocol = US_PR_CB;
1229                 subclass = US_SC_UFI;       /* an assumption */
1230         }
1231 #endif
1232
1233         if (dev->descriptor.bDeviceClass != 0 ||
1234                         iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
1235                         iface->desc.bInterfaceSubClass < US_SC_MIN ||
1236                         iface->desc.bInterfaceSubClass > US_SC_MAX) {
1237                 /* if it's not a mass storage, we go no further */
1238                 return 0;
1239         }
1240
1241         memset(ss, 0, sizeof(struct us_data));
1242
1243         /* At this point, we know we've got a live one */
1244         USB_STOR_PRINTF("\n\nUSB Mass Storage device detected\n");
1245
1246         /* Initialize the us_data structure with some useful info */
1247         ss->flags = flags;
1248         ss->ifnum = ifnum;
1249         ss->pusb_dev = dev;
1250         ss->attention_done = 0;
1251
1252         /* If the device has subclass and protocol, then use that.  Otherwise,
1253          * take data from the specific interface.
1254          */
1255         if (subclass) {
1256                 ss->subclass = subclass;
1257                 ss->protocol = protocol;
1258         } else {
1259                 ss->subclass = iface->desc.bInterfaceSubClass;
1260                 ss->protocol = iface->desc.bInterfaceProtocol;
1261         }
1262
1263         /* set the handler pointers based on the protocol */
1264         USB_STOR_PRINTF("Transport: ");
1265         switch (ss->protocol) {
1266         case US_PR_CB:
1267                 USB_STOR_PRINTF("Control/Bulk\n");
1268                 ss->transport = usb_stor_CB_transport;
1269                 ss->transport_reset = usb_stor_CB_reset;
1270                 break;
1271
1272         case US_PR_CBI:
1273                 USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
1274                 ss->transport = usb_stor_CB_transport;
1275                 ss->transport_reset = usb_stor_CB_reset;
1276                 break;
1277         case US_PR_BULK:
1278                 USB_STOR_PRINTF("Bulk/Bulk/Bulk\n");
1279                 ss->transport = usb_stor_BBB_transport;
1280                 ss->transport_reset = usb_stor_BBB_reset;
1281                 break;
1282         default:
1283                 printf("USB Storage Transport unknown / not yet implemented\n");
1284                 return 0;
1285                 break;
1286         }
1287
1288         /*
1289          * We are expecting a minimum of 2 endpoints - in and out (bulk).
1290          * An optional interrupt is OK (necessary for CBI protocol).
1291          * We will ignore any others.
1292          */
1293         for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1294                 /* is it an BULK endpoint? */
1295                 if ((iface->ep_desc[i].bmAttributes &
1296                      USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
1297                         if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
1298                                 ss->ep_in = iface->ep_desc[i].bEndpointAddress &
1299                                         USB_ENDPOINT_NUMBER_MASK;
1300                         else
1301                                 ss->ep_out =
1302                                         iface->ep_desc[i].bEndpointAddress &
1303                                         USB_ENDPOINT_NUMBER_MASK;
1304                 }
1305
1306                 /* is it an interrupt endpoint? */
1307                 if ((iface->ep_desc[i].bmAttributes &
1308                     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
1309                         ss->ep_int = iface->ep_desc[i].bEndpointAddress &
1310                                 USB_ENDPOINT_NUMBER_MASK;
1311                         ss->irqinterval = iface->ep_desc[i].bInterval;
1312                 }
1313         }
1314         USB_STOR_PRINTF("Endpoints In %d Out %d Int %d\n",
1315                   ss->ep_in, ss->ep_out, ss->ep_int);
1316
1317         /* Do some basic sanity checks, and bail if we find a problem */
1318         if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
1319             !ss->ep_in || !ss->ep_out ||
1320             (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
1321                 USB_STOR_PRINTF("Problems with device\n");
1322                 return 0;
1323         }
1324         /* set class specific stuff */
1325         /* We only handle certain protocols.  Currently, these are
1326          * the only ones.
1327          * The SFF8070 accepts the requests used in u-boot
1328          */
1329         if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
1330             ss->subclass != US_SC_8070) {
1331                 printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
1332                 return 0;
1333         }
1334         if (ss->ep_int) {
1335                 /* we had found an interrupt endpoint, prepare irq pipe
1336                  * set up the IRQ pipe and handler
1337                  */
1338                 ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
1339                 ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
1340                 ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
1341                 dev->irq_handle = usb_stor_irq;
1342         }
1343         dev->privptr = (void *)ss;
1344         return 1;
1345 }
1346
1347 int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
1348                       block_dev_desc_t *dev_desc)
1349 {
1350         unsigned char perq, modi;
1351         ALLOC_CACHE_ALIGN_BUFFER(unsigned long, cap, 2);
1352         ALLOC_CACHE_ALIGN_BUFFER(unsigned char, usb_stor_buf, 36);
1353         unsigned long *capacity, *blksz;
1354         ccb *pccb = &usb_ccb;
1355
1356         pccb->pdata = usb_stor_buf;
1357
1358         dev_desc->target = dev->devnum;
1359         pccb->lun = dev_desc->lun;
1360         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1361
1362         if (usb_inquiry(pccb, ss))
1363                 return -1;
1364
1365         perq = usb_stor_buf[0];
1366         modi = usb_stor_buf[1];
1367
1368         if ((perq & 0x1f) == 0x1f) {
1369                 /* skip unknown devices */
1370                 return 0;
1371         }
1372         if ((modi&0x80) == 0x80) {
1373                 /* drive is removable */
1374                 dev_desc->removable = 1;
1375         }
1376         memcpy(&dev_desc->vendor[0], (const void *) &usb_stor_buf[8], 8);
1377         memcpy(&dev_desc->product[0], (const void *) &usb_stor_buf[16], 16);
1378         memcpy(&dev_desc->revision[0], (const void *) &usb_stor_buf[32], 4);
1379         dev_desc->vendor[8] = 0;
1380         dev_desc->product[16] = 0;
1381         dev_desc->revision[4] = 0;
1382 #ifdef CONFIG_USB_BIN_FIXUP
1383         usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
1384                       (uchar *)dev_desc->product);
1385 #endif /* CONFIG_USB_BIN_FIXUP */
1386         USB_STOR_PRINTF("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
1387                         usb_stor_buf[3]);
1388         if (usb_test_unit_ready(pccb, ss)) {
1389                 printf("Device NOT ready\n"
1390                        "   Request Sense returned %02X %02X %02X\n",
1391                        pccb->sense_buf[2], pccb->sense_buf[12],
1392                        pccb->sense_buf[13]);
1393                 if (dev_desc->removable == 1) {
1394                         dev_desc->type = perq;
1395                         return 1;
1396                 }
1397                 return 0;
1398         }
1399         pccb->pdata = (unsigned char *)&cap[0];
1400         memset(pccb->pdata, 0, 8);
1401         if (usb_read_capacity(pccb, ss) != 0) {
1402                 printf("READ_CAP ERROR\n");
1403                 cap[0] = 2880;
1404                 cap[1] = 0x200;
1405         }
1406         USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n", cap[0],
1407                         cap[1]);
1408 #if 0
1409         if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
1410                 cap[0] >>= 16;
1411 #endif
1412         cap[0] = cpu_to_be32(cap[0]);
1413         cap[1] = cpu_to_be32(cap[1]);
1414
1415         /* this assumes bigendian! */
1416         cap[0] += 1;
1417         capacity = &cap[0];
1418         blksz = &cap[1];
1419         USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",
1420                         *capacity, *blksz);
1421         dev_desc->lba = *capacity;
1422         dev_desc->blksz = *blksz;
1423         dev_desc->type = perq;
1424         USB_STOR_PRINTF(" address %d\n", dev_desc->target);
1425         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1426
1427         init_part(dev_desc);
1428
1429         USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type);
1430         return 1;
1431 }