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Merge remote-tracking branch 'media_tree/vsp1' into generic-zpos-v8
[deliverable/linux.git] / drivers / usb / storage / datafab.c
CommitLineData
f0183a33
FB		 1/*
2 * Driver for Datafab USB Compact Flash reader
1da177e4
LT		 3 *
4 * datafab driver v0.1:
5 *
6 * First release
7 *
8 * Current development and maintenance by:
9 * (c) 2000 Jimmie Mayfield (mayfield+datafab@sackheads.org)
10 *
11 * Many thanks to Robert Baruch for the SanDisk SmartMedia reader driver
12 * which I used as a template for this driver.
13 *
14 * Some bugfixes and scatter-gather code by Gregory P. Smith
15 * (greg-usb@electricrain.com)
16 *
17 * Fix for media change by Joerg Schneider (js@joergschneider.com)
18 *
19 * Other contributors:
20 * (c) 2002 Alan Stern <stern@rowland.org>
21 *
22 * This program is free software; you can redistribute it and/or modify it
23 * under the terms of the GNU General Public License as published by the
24 * Free Software Foundation; either version 2, or (at your option) any
25 * later version.
26 *
27 * This program is distributed in the hope that it will be useful, but
28 * WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
30 * General Public License for more details.
31 *
32 * You should have received a copy of the GNU General Public License along
33 * with this program; if not, write to the Free Software Foundation, Inc.,
34 * 675 Mass Ave, Cambridge, MA 02139, USA.
35 */
36
37/*
38 * This driver attempts to support USB CompactFlash reader/writer devices
39 * based on Datafab USB-to-ATA chips. It was specifically developed for the
40 * Datafab MDCFE-B USB CompactFlash reader but has since been found to work
41 * with a variety of Datafab-based devices from a number of manufacturers.
42 * I've received a report of this driver working with a Datafab-based
43 * SmartMedia device though please be aware that I'm personally unable to
44 * test SmartMedia support.
45 *
46 * This driver supports reading and writing. If you're truly paranoid,
47 * however, you can force the driver into a write-protected state by setting
48 * the WP enable bits in datafab_handle_mode_sense(). See the comments
49 * in that routine.
50 */
51
1da177e4 52#include <linux/errno.h>
2cbbf357 53#include <linux/module.h>
1da177e4
LT		 54#include <linux/slab.h>
55
56#include <scsi/scsi.h>
57#include <scsi/scsi_cmnd.h>
58
59#include "usb.h"
60#include "transport.h"
61#include "protocol.h"
62#include "debug.h"
aa519be3
AM		 63#include "scsiglue.h"
64
65#define DRV_NAME "ums-datafab"
2cbbf357 66
4246b06a
MG		 67MODULE_DESCRIPTION("Driver for Datafab USB Compact Flash reader");
68MODULE_AUTHOR("Jimmie Mayfield <mayfield+datafab@sackheads.org>");
69MODULE_LICENSE("GPL");
70
2cbbf357
AS		 71struct datafab_info {
72 unsigned long sectors; /* total sector count */
73 unsigned long ssize; /* sector size in bytes */
74 signed char lun; /* used for dual-slot readers */
75
76 /* the following aren't used yet */
77 unsigned char sense_key;
78 unsigned long sense_asc; /* additional sense code */
79 unsigned long sense_ascq; /* additional sense code qualifier */
80};
1da177e4
LT		 81
82static int datafab_determine_lun(struct us_data *us,
83 struct datafab_info *info);
84
85
2cbbf357
AS		 86/*
87 * The table of devices
88 */
89#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
90 vendorName, productName, useProtocol, useTransport, \
91 initFunction, flags) \
92{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
f61870ee 93 .driver_info = (flags) }
2cbbf357 94
b03379f7 95static struct usb_device_id datafab_usb_ids[] = {
2cbbf357
AS		 96# include "unusual_datafab.h"
97 { } /* Terminating entry */
98};
99MODULE_DEVICE_TABLE(usb, datafab_usb_ids);
100
101#undef UNUSUAL_DEV
102
103/*
104 * The flags table
105 */
106#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
107 vendor_name, product_name, use_protocol, use_transport, \
108 init_function, Flags) \
109{ \
110 .vendorName = vendor_name, \
111 .productName = product_name, \
112 .useProtocol = use_protocol, \
113 .useTransport = use_transport, \
114 .initFunction = init_function, \
115}
116
117static struct us_unusual_dev datafab_unusual_dev_list[] = {
118# include "unusual_datafab.h"
119 { } /* Terminating entry */
120};
121
122#undef UNUSUAL_DEV
123
124
1da177e4
LT		 125static inline int
126datafab_bulk_read(struct us_data *us, unsigned char *data, unsigned int len) {
127 if (len == 0)
128 return USB_STOR_XFER_GOOD;
129
191648d0 130 usb_stor_dbg(us, "len = %d\n", len);
1da177e4
LT		 131 return usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
132 data, len, NULL);
133}
134
135
136static inline int
137datafab_bulk_write(struct us_data *us, unsigned char *data, unsigned int len) {
138 if (len == 0)
139 return USB_STOR_XFER_GOOD;
140
191648d0 141 usb_stor_dbg(us, "len = %d\n", len);
1da177e4
LT		 142 return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
143 data, len, NULL);
144}
145
146
147static int datafab_read_data(struct us_data *us,
148 struct datafab_info *info,
149 u32 sector,
150 u32 sectors)
151{
152 unsigned char *command = us->iobuf;
153 unsigned char *buffer;
154 unsigned char thistime;
155 unsigned int totallen, alloclen;
156 int len, result;
1f6f31a0
JA		 157 unsigned int sg_offset = 0;
158 struct scatterlist *sg = NULL;
1da177e4
LT		 159
160 // we're working in LBA mode. according to the ATA spec,
161 // we can support up to 28-bit addressing. I don't know if Datafab
162 // supports beyond 24-bit addressing. It's kind of hard to test
163 // since it requires > 8GB CF card.
164 //
165 if (sectors > 0x0FFFFFFF)
166 return USB_STOR_TRANSPORT_ERROR;
167
168 if (info->lun == -1) {
169 result = datafab_determine_lun(us, info);
170 if (result != USB_STOR_TRANSPORT_GOOD)
171 return result;
172 }
173
174 totallen = sectors * info->ssize;
175
176 // Since we don't read more than 64 KB at a time, we have to create
177 // a bounce buffer and move the data a piece at a time between the
178 // bounce buffer and the actual transfer buffer.
179
180 alloclen = min(totallen, 65536u);
181 buffer = kmalloc(alloclen, GFP_NOIO);
182 if (buffer == NULL)
183 return USB_STOR_TRANSPORT_ERROR;
184
185 do {
186 // loop, never allocate or transfer more than 64k at once
187 // (min(128k, 255*info->ssize) is the real limit)
188
189 len = min(totallen, alloclen);
190 thistime = (len / info->ssize) & 0xff;
191
192 command[0] = 0;
193 command[1] = thistime;
194 command[2] = sector & 0xFF;
195 command[3] = (sector >> 8) & 0xFF;
196 command[4] = (sector >> 16) & 0xFF;
197
198 command[5] = 0xE0 + (info->lun << 4);
199 command[5] |= (sector >> 24) & 0x0F;
200 command[6] = 0x20;
201 command[7] = 0x01;
202
203 // send the read command
204 result = datafab_bulk_write(us, command, 8);
205 if (result != USB_STOR_XFER_GOOD)
206 goto leave;
207
208 // read the result
209 result = datafab_bulk_read(us, buffer, len);
210 if (result != USB_STOR_XFER_GOOD)
211 goto leave;
212
213 // Store the data in the transfer buffer
214 usb_stor_access_xfer_buf(buffer, len, us->srb,
1f6f31a0 215 &sg, &sg_offset, TO_XFER_BUF);
1da177e4
LT		 216
217 sector += thistime;
218 totallen -= len;
219 } while (totallen > 0);
220
221 kfree(buffer);
222 return USB_STOR_TRANSPORT_GOOD;
223
224 leave:
225 kfree(buffer);
226 return USB_STOR_TRANSPORT_ERROR;
227}
228
229
230static int datafab_write_data(struct us_data *us,
231 struct datafab_info *info,
232 u32 sector,
233 u32 sectors)
234{
235 unsigned char *command = us->iobuf;
236 unsigned char *reply = us->iobuf;
237 unsigned char *buffer;
238 unsigned char thistime;
239 unsigned int totallen, alloclen;
240 int len, result;
1f6f31a0
JA		 241 unsigned int sg_offset = 0;
242 struct scatterlist *sg = NULL;
1da177e4
LT		 243
244 // we're working in LBA mode. according to the ATA spec,
245 // we can support up to 28-bit addressing. I don't know if Datafab
246 // supports beyond 24-bit addressing. It's kind of hard to test
247 // since it requires > 8GB CF card.
248 //
249 if (sectors > 0x0FFFFFFF)
250 return USB_STOR_TRANSPORT_ERROR;
251
252 if (info->lun == -1) {
253 result = datafab_determine_lun(us, info);
254 if (result != USB_STOR_TRANSPORT_GOOD)
255 return result;
256 }
257
258 totallen = sectors * info->ssize;
259
260 // Since we don't write more than 64 KB at a time, we have to create
261 // a bounce buffer and move the data a piece at a time between the
262 // bounce buffer and the actual transfer buffer.
263
264 alloclen = min(totallen, 65536u);
265 buffer = kmalloc(alloclen, GFP_NOIO);
266 if (buffer == NULL)
267 return USB_STOR_TRANSPORT_ERROR;
268
269 do {
270 // loop, never allocate or transfer more than 64k at once
271 // (min(128k, 255*info->ssize) is the real limit)
272
273 len = min(totallen, alloclen);
274 thistime = (len / info->ssize) & 0xff;
275
276 // Get the data from the transfer buffer
277 usb_stor_access_xfer_buf(buffer, len, us->srb,
1f6f31a0 278 &sg, &sg_offset, FROM_XFER_BUF);
1da177e4
LT		 279
280 command[0] = 0;
281 command[1] = thistime;
282 command[2] = sector & 0xFF;
283 command[3] = (sector >> 8) & 0xFF;
284 command[4] = (sector >> 16) & 0xFF;
285
286 command[5] = 0xE0 + (info->lun << 4);
287 command[5] |= (sector >> 24) & 0x0F;
288 command[6] = 0x30;
289 command[7] = 0x02;
290
291 // send the command
292 result = datafab_bulk_write(us, command, 8);
293 if (result != USB_STOR_XFER_GOOD)
294 goto leave;
295
296 // send the data
297 result = datafab_bulk_write(us, buffer, len);
298 if (result != USB_STOR_XFER_GOOD)
299 goto leave;
300
301 // read the result
302 result = datafab_bulk_read(us, reply, 2);
303 if (result != USB_STOR_XFER_GOOD)
304 goto leave;
305
306 if (reply[0] != 0x50 && reply[1] != 0) {
191648d0
JP		 307 usb_stor_dbg(us, "Gah! write return code: %02x %02x\n",
308 reply[0], reply[1]);
1da177e4
LT		 309 result = USB_STOR_TRANSPORT_ERROR;
310 goto leave;
311 }
312
313 sector += thistime;
314 totallen -= len;
315 } while (totallen > 0);
316
317 kfree(buffer);
318 return USB_STOR_TRANSPORT_GOOD;
319
320 leave:
321 kfree(buffer);
322 return USB_STOR_TRANSPORT_ERROR;
323}
324
325
326static int datafab_determine_lun(struct us_data *us,
327 struct datafab_info *info)
328{
329 // Dual-slot readers can be thought of as dual-LUN devices.
330 // We need to determine which card slot is being used.
331 // We'll send an IDENTIFY DEVICE command and see which LUN responds...
332 //
333 // There might be a better way of doing this?
334
335 static unsigned char scommand[8] = { 0, 1, 0, 0, 0, 0xa0, 0xec, 1 };
336 unsigned char *command = us->iobuf;
337 unsigned char *buf;
338 int count = 0, rc;
339
64aebe73 340 if (!info)
1da177e4
LT		 341 return USB_STOR_TRANSPORT_ERROR;
342
343 memcpy(command, scommand, 8);
344 buf = kmalloc(512, GFP_NOIO);
345 if (!buf)
346 return USB_STOR_TRANSPORT_ERROR;
347
191648d0 348 usb_stor_dbg(us, "locating...\n");
1da177e4
LT		 349
350 // we'll try 3 times before giving up...
351 //
352 while (count++ < 3) {
353 command[5] = 0xa0;
354
355 rc = datafab_bulk_write(us, command, 8);
356 if (rc != USB_STOR_XFER_GOOD) {
357 rc = USB_STOR_TRANSPORT_ERROR;
358 goto leave;
359 }
360
361 rc = datafab_bulk_read(us, buf, 512);
362 if (rc == USB_STOR_XFER_GOOD) {
363 info->lun = 0;
364 rc = USB_STOR_TRANSPORT_GOOD;
365 goto leave;
366 }
367
368 command[5] = 0xb0;
369
370 rc = datafab_bulk_write(us, command, 8);
371 if (rc != USB_STOR_XFER_GOOD) {
372 rc = USB_STOR_TRANSPORT_ERROR;
373 goto leave;
374 }
375
376 rc = datafab_bulk_read(us, buf, 512);
377 if (rc == USB_STOR_XFER_GOOD) {
378 info->lun = 1;
379 rc = USB_STOR_TRANSPORT_GOOD;
380 goto leave;
381 }
382
383 msleep(20);
384 }
385
386 rc = USB_STOR_TRANSPORT_ERROR;
387
388 leave:
389 kfree(buf);
390 return rc;
391}
392
393static int datafab_id_device(struct us_data *us,
394 struct datafab_info *info)
395{
396 // this is a variation of the ATA "IDENTIFY DEVICE" command...according
397 // to the ATA spec, 'Sector Count' isn't used but the Windows driver
398 // sets this bit so we do too...
399 //
400 static unsigned char scommand[8] = { 0, 1, 0, 0, 0, 0xa0, 0xec, 1 };
401 unsigned char *command = us->iobuf;
402 unsigned char *reply;
403 int rc;
404
64aebe73 405 if (!info)
1da177e4
LT		 406 return USB_STOR_TRANSPORT_ERROR;
407
408 if (info->lun == -1) {
409 rc = datafab_determine_lun(us, info);
410 if (rc != USB_STOR_TRANSPORT_GOOD)
411 return rc;
412 }
413
414 memcpy(command, scommand, 8);
415 reply = kmalloc(512, GFP_NOIO);
416 if (!reply)
417 return USB_STOR_TRANSPORT_ERROR;
418
419 command[5] += (info->lun << 4);
420
421 rc = datafab_bulk_write(us, command, 8);
422 if (rc != USB_STOR_XFER_GOOD) {
423 rc = USB_STOR_TRANSPORT_ERROR;
424 goto leave;
425 }
426
427 // we'll go ahead and extract the media capacity while we're here...
428 //
429 rc = datafab_bulk_read(us, reply, 512);
430 if (rc == USB_STOR_XFER_GOOD) {
431 // capacity is at word offset 57-58
432 //
433 info->sectors = ((u32)(reply[117]) << 24) |
434 ((u32)(reply[116]) << 16) |
435 ((u32)(reply[115]) << 8) |
436 ((u32)(reply[114]) );
437 rc = USB_STOR_TRANSPORT_GOOD;
438 goto leave;
439 }
440
441 rc = USB_STOR_TRANSPORT_ERROR;
442
443 leave:
444 kfree(reply);
445 return rc;
446}
447
448
449static int datafab_handle_mode_sense(struct us_data *us,
450 struct scsi_cmnd * srb,
451 int sense_6)
452{
453 static unsigned char rw_err_page[12] = {
454 0x1, 0xA, 0x21, 1, 0, 0, 0, 0, 1, 0, 0, 0
455 };
456 static unsigned char cache_page[12] = {
457 0x8, 0xA, 0x1, 0, 0, 0, 0, 0, 0, 0, 0, 0
458 };
459 static unsigned char rbac_page[12] = {
460 0x1B, 0xA, 0, 0x81, 0, 0, 0, 0, 0, 0, 0, 0
461 };
462 static unsigned char timer_page[8] = {
463 0x1C, 0x6, 0, 0, 0, 0
464 };
465 unsigned char pc, page_code;
466 unsigned int i = 0;
467 struct datafab_info *info = (struct datafab_info *) (us->extra);
468 unsigned char *ptr = us->iobuf;
469
470 // most of this stuff is just a hack to get things working. the
471 // datafab reader doesn't present a SCSI interface so we
472 // fudge the SCSI commands...
473 //
474
475 pc = srb->cmnd[2] >> 6;
476 page_code = srb->cmnd[2] & 0x3F;
477
478 switch (pc) {
479 case 0x0:
191648d0 480 usb_stor_dbg(us, "Current values\n");
1da177e4
LT		 481 break;
482 case 0x1:
191648d0 483 usb_stor_dbg(us, "Changeable values\n");
1da177e4
LT		 484 break;
485 case 0x2:
191648d0 486 usb_stor_dbg(us, "Default values\n");
1da177e4
LT		 487 break;
488 case 0x3:
191648d0 489 usb_stor_dbg(us, "Saves values\n");
1da177e4
LT		 490 break;
491 }
492
493 memset(ptr, 0, 8);
494 if (sense_6) {
495 ptr[2] = 0x00; // WP enable: 0x80
496 i = 4;
497 } else {
498 ptr[3] = 0x00; // WP enable: 0x80
499 i = 8;
500 }
501
502 switch (page_code) {
503 default:
504 // vendor-specific mode
505 info->sense_key = 0x05;
506 info->sense_asc = 0x24;
507 info->sense_ascq = 0x00;
508 return USB_STOR_TRANSPORT_FAILED;
509
510 case 0x1:
511 memcpy(ptr + i, rw_err_page, sizeof(rw_err_page));
512 i += sizeof(rw_err_page);
513 break;
514
515 case 0x8:
516 memcpy(ptr + i, cache_page, sizeof(cache_page));
517 i += sizeof(cache_page);
518 break;
519
520 case 0x1B:
521 memcpy(ptr + i, rbac_page, sizeof(rbac_page));
522 i += sizeof(rbac_page);
523 break;
524
525 case 0x1C:
526 memcpy(ptr + i, timer_page, sizeof(timer_page));
527 i += sizeof(timer_page);
528 break;
529
530 case 0x3F: // retrieve all pages
531 memcpy(ptr + i, timer_page, sizeof(timer_page));
532 i += sizeof(timer_page);
533 memcpy(ptr + i, rbac_page, sizeof(rbac_page));
534 i += sizeof(rbac_page);
535 memcpy(ptr + i, cache_page, sizeof(cache_page));
536 i += sizeof(cache_page);
537 memcpy(ptr + i, rw_err_page, sizeof(rw_err_page));
538 i += sizeof(rw_err_page);
539 break;
540 }
541
542 if (sense_6)
543 ptr[0] = i - 1;
544 else
545 ((__be16 *) ptr)[0] = cpu_to_be16(i - 2);
546 usb_stor_set_xfer_buf(ptr, i, srb);
547
548 return USB_STOR_TRANSPORT_GOOD;
549}
550
551static void datafab_info_destructor(void *extra)
552{
553 // this routine is a placeholder...
554 // currently, we don't allocate any extra memory so we're okay
555}
556
557
558// Transport for the Datafab MDCFE-B
559//
2cbbf357 560static int datafab_transport(struct scsi_cmnd *srb, struct us_data *us)
1da177e4
LT		 561{
562 struct datafab_info *info;
563 int rc;
564 unsigned long block, blocks;
565 unsigned char *ptr = us->iobuf;
566 static unsigned char inquiry_reply[8] = {
567 0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
568 };
569
570 if (!us->extra) {
887c2560 571 us->extra = kzalloc(sizeof(struct datafab_info), GFP_NOIO);
191648d0 572 if (!us->extra)
1da177e4 573 return USB_STOR_TRANSPORT_ERROR;
191648d0 574
1da177e4
LT		 575 us->extra_destructor = datafab_info_destructor;
576 ((struct datafab_info *)us->extra)->lun = -1;
577 }
578
579 info = (struct datafab_info *) (us->extra);
580
581 if (srb->cmnd[0] == INQUIRY) {
191648d0 582 usb_stor_dbg(us, "INQUIRY - Returning bogus response\n");
1da177e4
LT		 583 memcpy(ptr, inquiry_reply, sizeof(inquiry_reply));
584 fill_inquiry_response(us, ptr, 36);
585 return USB_STOR_TRANSPORT_GOOD;
586 }
587
588 if (srb->cmnd[0] == READ_CAPACITY) {
589 info->ssize = 0x200; // hard coded 512 byte sectors as per ATA spec
590 rc = datafab_id_device(us, info);
591 if (rc != USB_STOR_TRANSPORT_GOOD)
592 return rc;
593
191648d0
JP		 594 usb_stor_dbg(us, "READ_CAPACITY: %ld sectors, %ld bytes per sector\n",
595 info->sectors, info->ssize);
1da177e4
LT		 596
597 // build the reply
598 // we need the last sector, not the number of sectors
599 ((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1);
600 ((__be32 *) ptr)[1] = cpu_to_be32(info->ssize);
601 usb_stor_set_xfer_buf(ptr, 8, srb);
602
603 return USB_STOR_TRANSPORT_GOOD;
604 }
605
606 if (srb->cmnd[0] == MODE_SELECT_10) {
191648d0 607 usb_stor_dbg(us, "Gah! MODE_SELECT_10\n");
1da177e4
LT		 608 return USB_STOR_TRANSPORT_ERROR;
609 }
610
611 // don't bother implementing READ_6 or WRITE_6.
612 //
613 if (srb->cmnd[0] == READ_10) {
614 block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
615 ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
616
617 blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
618
191648d0
JP		 619 usb_stor_dbg(us, "READ_10: read block 0x%04lx count %ld\n",
620 block, blocks);
1da177e4
LT		 621 return datafab_read_data(us, info, block, blocks);
622 }
623
624 if (srb->cmnd[0] == READ_12) {
625 // we'll probably never see a READ_12 but we'll do it anyway...
626 //
627 block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
628 ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
629
630 blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
631 ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
632
191648d0
JP		 633 usb_stor_dbg(us, "READ_12: read block 0x%04lx count %ld\n",
634 block, blocks);
1da177e4
LT		 635 return datafab_read_data(us, info, block, blocks);
636 }
637
638 if (srb->cmnd[0] == WRITE_10) {
639 block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
640 ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
641
642 blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
643
191648d0
JP		 644 usb_stor_dbg(us, "WRITE_10: write block 0x%04lx count %ld\n",
645 block, blocks);
1da177e4
LT		 646 return datafab_write_data(us, info, block, blocks);
647 }
648
649 if (srb->cmnd[0] == WRITE_12) {
650 // we'll probably never see a WRITE_12 but we'll do it anyway...
651 //
652 block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
653 ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
654
655 blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
656 ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
657
191648d0
JP		 658 usb_stor_dbg(us, "WRITE_12: write block 0x%04lx count %ld\n",
659 block, blocks);
1da177e4
LT		 660 return datafab_write_data(us, info, block, blocks);
661 }
662
663 if (srb->cmnd[0] == TEST_UNIT_READY) {
191648d0 664 usb_stor_dbg(us, "TEST_UNIT_READY\n");
1da177e4
LT		 665 return datafab_id_device(us, info);
666 }
667
668 if (srb->cmnd[0] == REQUEST_SENSE) {
191648d0 669 usb_stor_dbg(us, "REQUEST_SENSE - Returning faked response\n");
1da177e4
LT		 670
671 // this response is pretty bogus right now. eventually if necessary
672 // we can set the correct sense data. so far though it hasn't been
673 // necessary
674 //
675 memset(ptr, 0, 18);
676 ptr[0] = 0xF0;
677 ptr[2] = info->sense_key;
678 ptr[7] = 11;
679 ptr[12] = info->sense_asc;
680 ptr[13] = info->sense_ascq;
681 usb_stor_set_xfer_buf(ptr, 18, srb);
682
683 return USB_STOR_TRANSPORT_GOOD;
684 }
685
686 if (srb->cmnd[0] == MODE_SENSE) {
191648d0 687 usb_stor_dbg(us, "MODE_SENSE_6 detected\n");
1da177e4
LT		 688 return datafab_handle_mode_sense(us, srb, 1);
689 }
690
691 if (srb->cmnd[0] == MODE_SENSE_10) {
191648d0 692 usb_stor_dbg(us, "MODE_SENSE_10 detected\n");
1da177e4
LT		 693 return datafab_handle_mode_sense(us, srb, 0);
694 }
695
696 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
f0183a33
FB		 697 /*
698 * sure. whatever. not like we can stop the user from
699 * popping the media out of the device (no locking doors, etc)
700 */
1da177e4
LT		 701 return USB_STOR_TRANSPORT_GOOD;
702 }
703
704 if (srb->cmnd[0] == START_STOP) {
f0183a33
FB		 705 /*
706 * this is used by sd.c'check_scsidisk_media_change to detect
707 * media change
708 */
191648d0 709 usb_stor_dbg(us, "START_STOP\n");
f0183a33
FB		 710 /*
711 * the first datafab_id_device after a media change returns
712 * an error (determined experimentally)
713 */
1da177e4
LT		 714 rc = datafab_id_device(us, info);
715 if (rc == USB_STOR_TRANSPORT_GOOD) {
716 info->sense_key = NO_SENSE;
717 srb->result = SUCCESS;
718 } else {
719 info->sense_key = UNIT_ATTENTION;
720 srb->result = SAM_STAT_CHECK_CONDITION;
721 }
722 return rc;
723 }
724
191648d0
JP		 725 usb_stor_dbg(us, "Gah! Unknown command: %d (0x%x)\n",
726 srb->cmnd[0], srb->cmnd[0]);
1da177e4
LT		 727 info->sense_key = 0x05;
728 info->sense_asc = 0x20;
729 info->sense_ascq = 0x00;
730 return USB_STOR_TRANSPORT_FAILED;
731}
2cbbf357 732
aa519be3
AM		 733static struct scsi_host_template datafab_host_template;
734
2cbbf357
AS		 735static int datafab_probe(struct usb_interface *intf,
736 const struct usb_device_id *id)
737{
738 struct us_data *us;
739 int result;
740
741 result = usb_stor_probe1(&us, intf, id,
aa519be3
AM		 742 (id - datafab_usb_ids) + datafab_unusual_dev_list,
743 &datafab_host_template);
2cbbf357
AS		 744 if (result)
745 return result;
746
747 us->transport_name = "Datafab Bulk-Only";
748 us->transport = datafab_transport;
749 us->transport_reset = usb_stor_Bulk_reset;
750 us->max_lun = 1;
751
752 result = usb_stor_probe2(us);
753 return result;
754}
755
756static struct usb_driver datafab_driver = {
aa519be3 757 .name = DRV_NAME,
2cbbf357
AS		 758 .probe = datafab_probe,
759 .disconnect = usb_stor_disconnect,
760 .suspend = usb_stor_suspend,
761 .resume = usb_stor_resume,
762 .reset_resume = usb_stor_reset_resume,
763 .pre_reset = usb_stor_pre_reset,
764 .post_reset = usb_stor_post_reset,
765 .id_table = datafab_usb_ids,
766 .soft_unbind = 1,
e73b2db6 767 .no_dynamic_id = 1,
2cbbf357
AS		 768};
769
aa519be3 770module_usb_stor_driver(datafab_driver, datafab_host_template, DRV_NAME);
Linux kernel - Deliverables
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