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1da177e4 LT |
1 | /* Driver for Lexar "Jumpshot" Compact Flash reader |
2 | * | |
3 | * $Id: jumpshot.c,v 1.7 2002/02/25 00:40:13 mdharm Exp $ | |
4 | * | |
5 | * jumpshot driver v0.1: | |
6 | * | |
7 | * First release | |
8 | * | |
9 | * Current development and maintenance by: | |
10 | * (c) 2000 Jimmie Mayfield (mayfield+usb@sackheads.org) | |
11 | * | |
12 | * Many thanks to Robert Baruch for the SanDisk SmartMedia reader driver | |
13 | * which I used as a template for this driver. | |
14 | * | |
15 | * Some bugfixes and scatter-gather code by Gregory P. Smith | |
16 | * (greg-usb@electricrain.com) | |
17 | * | |
18 | * Fix for media change by Joerg Schneider (js@joergschneider.com) | |
19 | * | |
20 | * Developed with the assistance of: | |
21 | * | |
22 | * (C) 2002 Alan Stern <stern@rowland.org> | |
23 | * | |
24 | * This program is free software; you can redistribute it and/or modify it | |
25 | * under the terms of the GNU General Public License as published by the | |
26 | * Free Software Foundation; either version 2, or (at your option) any | |
27 | * later version. | |
28 | * | |
29 | * This program is distributed in the hope that it will be useful, but | |
30 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
32 | * General Public License for more details. | |
33 | * | |
34 | * You should have received a copy of the GNU General Public License along | |
35 | * with this program; if not, write to the Free Software Foundation, Inc., | |
36 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
37 | */ | |
38 | ||
39 | /* | |
40 | * This driver attempts to support the Lexar Jumpshot USB CompactFlash | |
41 | * reader. Like many other USB CompactFlash readers, the Jumpshot contains | |
42 | * a USB-to-ATA chip. | |
43 | * | |
44 | * This driver supports reading and writing. If you're truly paranoid, | |
45 | * however, you can force the driver into a write-protected state by setting | |
46 | * the WP enable bits in jumpshot_handle_mode_sense. See the comments | |
47 | * in that routine. | |
48 | */ | |
49 | ||
50 | #include <linux/sched.h> | |
51 | #include <linux/errno.h> | |
52 | #include <linux/slab.h> | |
53 | ||
54 | #include <scsi/scsi.h> | |
55 | #include <scsi/scsi_cmnd.h> | |
56 | ||
57 | #include "usb.h" | |
58 | #include "transport.h" | |
59 | #include "protocol.h" | |
60 | #include "debug.h" | |
61 | #include "jumpshot.h" | |
62 | ||
63 | ||
64 | static inline int jumpshot_bulk_read(struct us_data *us, | |
65 | unsigned char *data, | |
66 | unsigned int len) | |
67 | { | |
68 | if (len == 0) | |
69 | return USB_STOR_XFER_GOOD; | |
70 | ||
71 | US_DEBUGP("jumpshot_bulk_read: len = %d\n", len); | |
72 | return usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, | |
73 | data, len, NULL); | |
74 | } | |
75 | ||
76 | ||
77 | static inline int jumpshot_bulk_write(struct us_data *us, | |
78 | unsigned char *data, | |
79 | unsigned int len) | |
80 | { | |
81 | if (len == 0) | |
82 | return USB_STOR_XFER_GOOD; | |
83 | ||
84 | US_DEBUGP("jumpshot_bulk_write: len = %d\n", len); | |
85 | return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, | |
86 | data, len, NULL); | |
87 | } | |
88 | ||
89 | ||
90 | static int jumpshot_get_status(struct us_data *us) | |
91 | { | |
92 | int rc; | |
93 | ||
94 | if (!us) | |
95 | return USB_STOR_TRANSPORT_ERROR; | |
96 | ||
97 | // send the setup | |
98 | rc = usb_stor_ctrl_transfer(us, us->recv_ctrl_pipe, | |
99 | 0, 0xA0, 0, 7, us->iobuf, 1); | |
100 | ||
101 | if (rc != USB_STOR_XFER_GOOD) | |
102 | return USB_STOR_TRANSPORT_ERROR; | |
103 | ||
104 | if (us->iobuf[0] != 0x50) { | |
105 | US_DEBUGP("jumpshot_get_status: 0x%2x\n", | |
106 | us->iobuf[0]); | |
107 | return USB_STOR_TRANSPORT_ERROR; | |
108 | } | |
109 | ||
110 | return USB_STOR_TRANSPORT_GOOD; | |
111 | } | |
112 | ||
113 | static int jumpshot_read_data(struct us_data *us, | |
114 | struct jumpshot_info *info, | |
115 | u32 sector, | |
116 | u32 sectors) | |
117 | { | |
118 | unsigned char *command = us->iobuf; | |
119 | unsigned char *buffer; | |
120 | unsigned char thistime; | |
121 | unsigned int totallen, alloclen; | |
122 | int len, result; | |
123 | unsigned int sg_idx = 0, sg_offset = 0; | |
124 | ||
125 | // we're working in LBA mode. according to the ATA spec, | |
126 | // we can support up to 28-bit addressing. I don't know if Jumpshot | |
127 | // supports beyond 24-bit addressing. It's kind of hard to test | |
128 | // since it requires > 8GB CF card. | |
129 | ||
130 | if (sector > 0x0FFFFFFF) | |
131 | return USB_STOR_TRANSPORT_ERROR; | |
132 | ||
133 | totallen = sectors * info->ssize; | |
134 | ||
135 | // Since we don't read more than 64 KB at a time, we have to create | |
136 | // a bounce buffer and move the data a piece at a time between the | |
137 | // bounce buffer and the actual transfer buffer. | |
138 | ||
139 | alloclen = min(totallen, 65536u); | |
140 | buffer = kmalloc(alloclen, GFP_NOIO); | |
141 | if (buffer == NULL) | |
142 | return USB_STOR_TRANSPORT_ERROR; | |
143 | ||
144 | do { | |
145 | // loop, never allocate or transfer more than 64k at once | |
146 | // (min(128k, 255*info->ssize) is the real limit) | |
147 | len = min(totallen, alloclen); | |
148 | thistime = (len / info->ssize) & 0xff; | |
149 | ||
150 | command[0] = 0; | |
151 | command[1] = thistime; | |
152 | command[2] = sector & 0xFF; | |
153 | command[3] = (sector >> 8) & 0xFF; | |
154 | command[4] = (sector >> 16) & 0xFF; | |
155 | ||
156 | command[5] = 0xE0 | ((sector >> 24) & 0x0F); | |
157 | command[6] = 0x20; | |
158 | ||
159 | // send the setup + command | |
160 | result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, | |
161 | 0, 0x20, 0, 1, command, 7); | |
162 | if (result != USB_STOR_XFER_GOOD) | |
163 | goto leave; | |
164 | ||
165 | // read the result | |
166 | result = jumpshot_bulk_read(us, buffer, len); | |
167 | if (result != USB_STOR_XFER_GOOD) | |
168 | goto leave; | |
169 | ||
170 | US_DEBUGP("jumpshot_read_data: %d bytes\n", len); | |
171 | ||
172 | // Store the data in the transfer buffer | |
173 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
174 | &sg_idx, &sg_offset, TO_XFER_BUF); | |
175 | ||
176 | sector += thistime; | |
177 | totallen -= len; | |
178 | } while (totallen > 0); | |
179 | ||
180 | kfree(buffer); | |
181 | return USB_STOR_TRANSPORT_GOOD; | |
182 | ||
183 | leave: | |
184 | kfree(buffer); | |
185 | return USB_STOR_TRANSPORT_ERROR; | |
186 | } | |
187 | ||
188 | ||
189 | static int jumpshot_write_data(struct us_data *us, | |
190 | struct jumpshot_info *info, | |
191 | u32 sector, | |
192 | u32 sectors) | |
193 | { | |
194 | unsigned char *command = us->iobuf; | |
195 | unsigned char *buffer; | |
196 | unsigned char thistime; | |
197 | unsigned int totallen, alloclen; | |
198 | int len, result, waitcount; | |
199 | unsigned int sg_idx = 0, sg_offset = 0; | |
200 | ||
201 | // we're working in LBA mode. according to the ATA spec, | |
202 | // we can support up to 28-bit addressing. I don't know if Jumpshot | |
203 | // supports beyond 24-bit addressing. It's kind of hard to test | |
204 | // since it requires > 8GB CF card. | |
205 | // | |
206 | if (sector > 0x0FFFFFFF) | |
207 | return USB_STOR_TRANSPORT_ERROR; | |
208 | ||
209 | totallen = sectors * info->ssize; | |
210 | ||
211 | // Since we don't write more than 64 KB at a time, we have to create | |
212 | // a bounce buffer and move the data a piece at a time between the | |
213 | // bounce buffer and the actual transfer buffer. | |
214 | ||
215 | alloclen = min(totallen, 65536u); | |
216 | buffer = kmalloc(alloclen, GFP_NOIO); | |
217 | if (buffer == NULL) | |
218 | return USB_STOR_TRANSPORT_ERROR; | |
219 | ||
220 | do { | |
221 | // loop, never allocate or transfer more than 64k at once | |
222 | // (min(128k, 255*info->ssize) is the real limit) | |
223 | ||
224 | len = min(totallen, alloclen); | |
225 | thistime = (len / info->ssize) & 0xff; | |
226 | ||
227 | // Get the data from the transfer buffer | |
228 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
229 | &sg_idx, &sg_offset, FROM_XFER_BUF); | |
230 | ||
231 | command[0] = 0; | |
232 | command[1] = thistime; | |
233 | command[2] = sector & 0xFF; | |
234 | command[3] = (sector >> 8) & 0xFF; | |
235 | command[4] = (sector >> 16) & 0xFF; | |
236 | ||
237 | command[5] = 0xE0 | ((sector >> 24) & 0x0F); | |
238 | command[6] = 0x30; | |
239 | ||
240 | // send the setup + command | |
241 | result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, | |
242 | 0, 0x20, 0, 1, command, 7); | |
243 | if (result != USB_STOR_XFER_GOOD) | |
244 | goto leave; | |
245 | ||
246 | // send the data | |
247 | result = jumpshot_bulk_write(us, buffer, len); | |
248 | if (result != USB_STOR_XFER_GOOD) | |
249 | goto leave; | |
250 | ||
251 | // read the result. apparently the bulk write can complete | |
252 | // before the jumpshot drive is finished writing. so we loop | |
253 | // here until we get a good return code | |
254 | waitcount = 0; | |
255 | do { | |
256 | result = jumpshot_get_status(us); | |
257 | if (result != USB_STOR_TRANSPORT_GOOD) { | |
258 | // I have not experimented to find the smallest value. | |
259 | // | |
260 | msleep(50); | |
261 | } | |
262 | } while ((result != USB_STOR_TRANSPORT_GOOD) && (waitcount < 10)); | |
263 | ||
264 | if (result != USB_STOR_TRANSPORT_GOOD) | |
265 | US_DEBUGP("jumpshot_write_data: Gah! Waitcount = 10. Bad write!?\n"); | |
266 | ||
267 | sector += thistime; | |
268 | totallen -= len; | |
269 | } while (totallen > 0); | |
270 | ||
271 | kfree(buffer); | |
272 | return result; | |
273 | ||
274 | leave: | |
275 | kfree(buffer); | |
276 | return USB_STOR_TRANSPORT_ERROR; | |
277 | } | |
278 | ||
279 | static int jumpshot_id_device(struct us_data *us, | |
280 | struct jumpshot_info *info) | |
281 | { | |
282 | unsigned char *command = us->iobuf; | |
283 | unsigned char *reply; | |
284 | int rc; | |
285 | ||
286 | if (!us || !info) | |
287 | return USB_STOR_TRANSPORT_ERROR; | |
288 | ||
289 | command[0] = 0xE0; | |
290 | command[1] = 0xEC; | |
291 | reply = kmalloc(512, GFP_NOIO); | |
292 | if (!reply) | |
293 | return USB_STOR_TRANSPORT_ERROR; | |
294 | ||
295 | // send the setup | |
296 | rc = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, | |
297 | 0, 0x20, 0, 6, command, 2); | |
298 | ||
299 | if (rc != USB_STOR_XFER_GOOD) { | |
300 | US_DEBUGP("jumpshot_id_device: Gah! " | |
301 | "send_control for read_capacity failed\n"); | |
302 | rc = USB_STOR_TRANSPORT_ERROR; | |
303 | goto leave; | |
304 | } | |
305 | ||
306 | // read the reply | |
307 | rc = jumpshot_bulk_read(us, reply, 512); | |
308 | if (rc != USB_STOR_XFER_GOOD) { | |
309 | rc = USB_STOR_TRANSPORT_ERROR; | |
310 | goto leave; | |
311 | } | |
312 | ||
313 | info->sectors = ((u32)(reply[117]) << 24) | | |
314 | ((u32)(reply[116]) << 16) | | |
315 | ((u32)(reply[115]) << 8) | | |
316 | ((u32)(reply[114]) ); | |
317 | ||
318 | rc = USB_STOR_TRANSPORT_GOOD; | |
319 | ||
320 | leave: | |
321 | kfree(reply); | |
322 | return rc; | |
323 | } | |
324 | ||
325 | static int jumpshot_handle_mode_sense(struct us_data *us, | |
326 | struct scsi_cmnd * srb, | |
327 | int sense_6) | |
328 | { | |
329 | static unsigned char rw_err_page[12] = { | |
330 | 0x1, 0xA, 0x21, 1, 0, 0, 0, 0, 1, 0, 0, 0 | |
331 | }; | |
332 | static unsigned char cache_page[12] = { | |
333 | 0x8, 0xA, 0x1, 0, 0, 0, 0, 0, 0, 0, 0, 0 | |
334 | }; | |
335 | static unsigned char rbac_page[12] = { | |
336 | 0x1B, 0xA, 0, 0x81, 0, 0, 0, 0, 0, 0, 0, 0 | |
337 | }; | |
338 | static unsigned char timer_page[8] = { | |
339 | 0x1C, 0x6, 0, 0, 0, 0 | |
340 | }; | |
341 | unsigned char pc, page_code; | |
342 | unsigned int i = 0; | |
343 | struct jumpshot_info *info = (struct jumpshot_info *) (us->extra); | |
344 | unsigned char *ptr = us->iobuf; | |
345 | ||
346 | pc = srb->cmnd[2] >> 6; | |
347 | page_code = srb->cmnd[2] & 0x3F; | |
348 | ||
349 | switch (pc) { | |
350 | case 0x0: | |
351 | US_DEBUGP("jumpshot_handle_mode_sense: Current values\n"); | |
352 | break; | |
353 | case 0x1: | |
354 | US_DEBUGP("jumpshot_handle_mode_sense: Changeable values\n"); | |
355 | break; | |
356 | case 0x2: | |
357 | US_DEBUGP("jumpshot_handle_mode_sense: Default values\n"); | |
358 | break; | |
359 | case 0x3: | |
360 | US_DEBUGP("jumpshot_handle_mode_sense: Saves values\n"); | |
361 | break; | |
362 | } | |
363 | ||
364 | memset(ptr, 0, 8); | |
365 | if (sense_6) { | |
366 | ptr[2] = 0x00; // WP enable: 0x80 | |
367 | i = 4; | |
368 | } else { | |
369 | ptr[3] = 0x00; // WP enable: 0x80 | |
370 | i = 8; | |
371 | } | |
372 | ||
373 | switch (page_code) { | |
374 | case 0x0: | |
375 | // vendor-specific mode | |
376 | info->sense_key = 0x05; | |
377 | info->sense_asc = 0x24; | |
378 | info->sense_ascq = 0x00; | |
379 | return USB_STOR_TRANSPORT_FAILED; | |
380 | ||
381 | case 0x1: | |
382 | memcpy(ptr + i, rw_err_page, sizeof(rw_err_page)); | |
383 | i += sizeof(rw_err_page); | |
384 | break; | |
385 | ||
386 | case 0x8: | |
387 | memcpy(ptr + i, cache_page, sizeof(cache_page)); | |
388 | i += sizeof(cache_page); | |
389 | break; | |
390 | ||
391 | case 0x1B: | |
392 | memcpy(ptr + i, rbac_page, sizeof(rbac_page)); | |
393 | i += sizeof(rbac_page); | |
394 | break; | |
395 | ||
396 | case 0x1C: | |
397 | memcpy(ptr + i, timer_page, sizeof(timer_page)); | |
398 | i += sizeof(timer_page); | |
399 | break; | |
400 | ||
401 | case 0x3F: | |
402 | memcpy(ptr + i, timer_page, sizeof(timer_page)); | |
403 | i += sizeof(timer_page); | |
404 | memcpy(ptr + i, rbac_page, sizeof(rbac_page)); | |
405 | i += sizeof(rbac_page); | |
406 | memcpy(ptr + i, cache_page, sizeof(cache_page)); | |
407 | i += sizeof(cache_page); | |
408 | memcpy(ptr + i, rw_err_page, sizeof(rw_err_page)); | |
409 | i += sizeof(rw_err_page); | |
410 | break; | |
411 | } | |
412 | ||
413 | if (sense_6) | |
414 | ptr[0] = i - 1; | |
415 | else | |
416 | ((__be16 *) ptr)[0] = cpu_to_be16(i - 2); | |
417 | usb_stor_set_xfer_buf(ptr, i, srb); | |
418 | ||
419 | return USB_STOR_TRANSPORT_GOOD; | |
420 | } | |
421 | ||
422 | ||
423 | static void jumpshot_info_destructor(void *extra) | |
424 | { | |
425 | // this routine is a placeholder... | |
426 | // currently, we don't allocate any extra blocks so we're okay | |
427 | } | |
428 | ||
429 | ||
430 | ||
431 | // Transport for the Lexar 'Jumpshot' | |
432 | // | |
433 | int jumpshot_transport(struct scsi_cmnd * srb, struct us_data *us) | |
434 | { | |
435 | struct jumpshot_info *info; | |
436 | int rc; | |
437 | unsigned long block, blocks; | |
438 | unsigned char *ptr = us->iobuf; | |
439 | static unsigned char inquiry_response[8] = { | |
440 | 0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00 | |
441 | }; | |
442 | ||
443 | if (!us->extra) { | |
444 | us->extra = kmalloc(sizeof(struct jumpshot_info), GFP_NOIO); | |
445 | if (!us->extra) { | |
446 | US_DEBUGP("jumpshot_transport: Gah! Can't allocate storage for jumpshot info struct!\n"); | |
447 | return USB_STOR_TRANSPORT_ERROR; | |
448 | } | |
449 | memset(us->extra, 0, sizeof(struct jumpshot_info)); | |
450 | us->extra_destructor = jumpshot_info_destructor; | |
451 | } | |
452 | ||
453 | info = (struct jumpshot_info *) (us->extra); | |
454 | ||
455 | if (srb->cmnd[0] == INQUIRY) { | |
456 | US_DEBUGP("jumpshot_transport: INQUIRY. Returning bogus response.\n"); | |
457 | memcpy(ptr, inquiry_response, sizeof(inquiry_response)); | |
458 | fill_inquiry_response(us, ptr, 36); | |
459 | return USB_STOR_TRANSPORT_GOOD; | |
460 | } | |
461 | ||
462 | if (srb->cmnd[0] == READ_CAPACITY) { | |
463 | info->ssize = 0x200; // hard coded 512 byte sectors as per ATA spec | |
464 | ||
465 | rc = jumpshot_get_status(us); | |
466 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
467 | return rc; | |
468 | ||
469 | rc = jumpshot_id_device(us, info); | |
470 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
471 | return rc; | |
472 | ||
473 | US_DEBUGP("jumpshot_transport: READ_CAPACITY: %ld sectors, %ld bytes per sector\n", | |
474 | info->sectors, info->ssize); | |
475 | ||
476 | // build the reply | |
477 | // | |
478 | ((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1); | |
479 | ((__be32 *) ptr)[1] = cpu_to_be32(info->ssize); | |
480 | usb_stor_set_xfer_buf(ptr, 8, srb); | |
481 | ||
482 | return USB_STOR_TRANSPORT_GOOD; | |
483 | } | |
484 | ||
485 | if (srb->cmnd[0] == MODE_SELECT_10) { | |
486 | US_DEBUGP("jumpshot_transport: Gah! MODE_SELECT_10.\n"); | |
487 | return USB_STOR_TRANSPORT_ERROR; | |
488 | } | |
489 | ||
490 | if (srb->cmnd[0] == READ_10) { | |
491 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
492 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
493 | ||
494 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); | |
495 | ||
496 | US_DEBUGP("jumpshot_transport: READ_10: read block 0x%04lx count %ld\n", block, blocks); | |
497 | return jumpshot_read_data(us, info, block, blocks); | |
498 | } | |
499 | ||
500 | if (srb->cmnd[0] == READ_12) { | |
501 | // I don't think we'll ever see a READ_12 but support it anyway... | |
502 | // | |
503 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
504 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
505 | ||
506 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | | |
507 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); | |
508 | ||
509 | US_DEBUGP("jumpshot_transport: READ_12: read block 0x%04lx count %ld\n", block, blocks); | |
510 | return jumpshot_read_data(us, info, block, blocks); | |
511 | } | |
512 | ||
513 | if (srb->cmnd[0] == WRITE_10) { | |
514 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
515 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
516 | ||
517 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); | |
518 | ||
519 | US_DEBUGP("jumpshot_transport: WRITE_10: write block 0x%04lx count %ld\n", block, blocks); | |
520 | return jumpshot_write_data(us, info, block, blocks); | |
521 | } | |
522 | ||
523 | if (srb->cmnd[0] == WRITE_12) { | |
524 | // I don't think we'll ever see a WRITE_12 but support it anyway... | |
525 | // | |
526 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
527 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
528 | ||
529 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | | |
530 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); | |
531 | ||
532 | US_DEBUGP("jumpshot_transport: WRITE_12: write block 0x%04lx count %ld\n", block, blocks); | |
533 | return jumpshot_write_data(us, info, block, blocks); | |
534 | } | |
535 | ||
536 | ||
537 | if (srb->cmnd[0] == TEST_UNIT_READY) { | |
538 | US_DEBUGP("jumpshot_transport: TEST_UNIT_READY.\n"); | |
539 | return jumpshot_get_status(us); | |
540 | } | |
541 | ||
542 | if (srb->cmnd[0] == REQUEST_SENSE) { | |
543 | US_DEBUGP("jumpshot_transport: REQUEST_SENSE.\n"); | |
544 | ||
545 | memset(ptr, 0, 18); | |
546 | ptr[0] = 0xF0; | |
547 | ptr[2] = info->sense_key; | |
548 | ptr[7] = 11; | |
549 | ptr[12] = info->sense_asc; | |
550 | ptr[13] = info->sense_ascq; | |
551 | usb_stor_set_xfer_buf(ptr, 18, srb); | |
552 | ||
553 | return USB_STOR_TRANSPORT_GOOD; | |
554 | } | |
555 | ||
556 | if (srb->cmnd[0] == MODE_SENSE) { | |
557 | US_DEBUGP("jumpshot_transport: MODE_SENSE_6 detected\n"); | |
558 | return jumpshot_handle_mode_sense(us, srb, 1); | |
559 | } | |
560 | ||
561 | if (srb->cmnd[0] == MODE_SENSE_10) { | |
562 | US_DEBUGP("jumpshot_transport: MODE_SENSE_10 detected\n"); | |
563 | return jumpshot_handle_mode_sense(us, srb, 0); | |
564 | } | |
565 | ||
566 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { | |
567 | // sure. whatever. not like we can stop the user from popping | |
568 | // the media out of the device (no locking doors, etc) | |
569 | // | |
570 | return USB_STOR_TRANSPORT_GOOD; | |
571 | } | |
572 | ||
573 | if (srb->cmnd[0] == START_STOP) { | |
574 | /* this is used by sd.c'check_scsidisk_media_change to detect | |
575 | media change */ | |
576 | US_DEBUGP("jumpshot_transport: START_STOP.\n"); | |
577 | /* the first jumpshot_id_device after a media change returns | |
578 | an error (determined experimentally) */ | |
579 | rc = jumpshot_id_device(us, info); | |
580 | if (rc == USB_STOR_TRANSPORT_GOOD) { | |
581 | info->sense_key = NO_SENSE; | |
582 | srb->result = SUCCESS; | |
583 | } else { | |
584 | info->sense_key = UNIT_ATTENTION; | |
585 | srb->result = SAM_STAT_CHECK_CONDITION; | |
586 | } | |
587 | return rc; | |
588 | } | |
589 | ||
590 | US_DEBUGP("jumpshot_transport: Gah! Unknown command: %d (0x%x)\n", | |
591 | srb->cmnd[0], srb->cmnd[0]); | |
592 | info->sense_key = 0x05; | |
593 | info->sense_asc = 0x20; | |
594 | info->sense_ascq = 0x00; | |
595 | return USB_STOR_TRANSPORT_FAILED; | |
596 | } |