xref: /openbmc/linux/drivers/usb/storage/jumpshot.c (revision 0da85d1e)
1 /* Driver for Lexar "Jumpshot" Compact Flash reader
2  *
3  * jumpshot driver v0.1:
4  *
5  * First release
6  *
7  * Current development and maintenance by:
8  *   (c) 2000 Jimmie Mayfield (mayfield+usb@sackheads.org)
9  *
10  *   Many thanks to Robert Baruch for the SanDisk SmartMedia reader driver
11  *   which I used as a template for this driver.
12  *
13  *   Some bugfixes and scatter-gather code by Gregory P. Smith
14  *   (greg-usb@electricrain.com)
15  *
16  *   Fix for media change by Joerg Schneider (js@joergschneider.com)
17  *
18  * Developed with the assistance of:
19  *
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 the Lexar Jumpshot USB CompactFlash
39   * reader.  Like many other USB CompactFlash readers, the Jumpshot contains
40   * a USB-to-ATA chip.
41   *
42   * This driver supports reading and writing.  If you're truly paranoid,
43   * however, you can force the driver into a write-protected state by setting
44   * the WP enable bits in jumpshot_handle_mode_sense.  See the comments
45   * in that routine.
46   */
47 
48 #include <linux/errno.h>
49 #include <linux/module.h>
50 #include <linux/slab.h>
51 
52 #include <scsi/scsi.h>
53 #include <scsi/scsi_cmnd.h>
54 
55 #include "usb.h"
56 #include "transport.h"
57 #include "protocol.h"
58 #include "debug.h"
59 
60 
61 MODULE_DESCRIPTION("Driver for Lexar \"Jumpshot\" Compact Flash reader");
62 MODULE_AUTHOR("Jimmie Mayfield <mayfield+usb@sackheads.org>");
63 MODULE_LICENSE("GPL");
64 
65 /*
66  * The table of devices
67  */
68 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
69 		    vendorName, productName, useProtocol, useTransport, \
70 		    initFunction, flags) \
71 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
72   .driver_info = (flags) }
73 
74 static struct usb_device_id jumpshot_usb_ids[] = {
75 #	include "unusual_jumpshot.h"
76 	{ }		/* Terminating entry */
77 };
78 MODULE_DEVICE_TABLE(usb, jumpshot_usb_ids);
79 
80 #undef UNUSUAL_DEV
81 
82 /*
83  * The flags table
84  */
85 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
86 		    vendor_name, product_name, use_protocol, use_transport, \
87 		    init_function, Flags) \
88 { \
89 	.vendorName = vendor_name,	\
90 	.productName = product_name,	\
91 	.useProtocol = use_protocol,	\
92 	.useTransport = use_transport,	\
93 	.initFunction = init_function,	\
94 }
95 
96 static struct us_unusual_dev jumpshot_unusual_dev_list[] = {
97 #	include "unusual_jumpshot.h"
98 	{ }		/* Terminating entry */
99 };
100 
101 #undef UNUSUAL_DEV
102 
103 
104 struct jumpshot_info {
105    unsigned long   sectors;     /* total sector count */
106    unsigned long   ssize;       /* sector size in bytes */
107 
108    /* the following aren't used yet */
109    unsigned char   sense_key;
110    unsigned long   sense_asc;   /* additional sense code */
111    unsigned long   sense_ascq;  /* additional sense code qualifier */
112 };
113 
114 static inline int jumpshot_bulk_read(struct us_data *us,
115 				     unsigned char *data,
116 				     unsigned int len)
117 {
118 	if (len == 0)
119 		return USB_STOR_XFER_GOOD;
120 
121 	usb_stor_dbg(us, "len = %d\n", len);
122 	return usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
123 			data, len, NULL);
124 }
125 
126 
127 static inline int jumpshot_bulk_write(struct us_data *us,
128 				      unsigned char *data,
129 				      unsigned int len)
130 {
131 	if (len == 0)
132 		return USB_STOR_XFER_GOOD;
133 
134 	usb_stor_dbg(us, "len = %d\n", len);
135 	return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
136 			data, len, NULL);
137 }
138 
139 
140 static int jumpshot_get_status(struct us_data  *us)
141 {
142 	int rc;
143 
144 	if (!us)
145 		return USB_STOR_TRANSPORT_ERROR;
146 
147 	// send the setup
148 	rc = usb_stor_ctrl_transfer(us, us->recv_ctrl_pipe,
149 				   0, 0xA0, 0, 7, us->iobuf, 1);
150 
151 	if (rc != USB_STOR_XFER_GOOD)
152 		return USB_STOR_TRANSPORT_ERROR;
153 
154 	if (us->iobuf[0] != 0x50) {
155 		usb_stor_dbg(us, "0x%2x\n", us->iobuf[0]);
156 		return USB_STOR_TRANSPORT_ERROR;
157 	}
158 
159 	return USB_STOR_TRANSPORT_GOOD;
160 }
161 
162 static int jumpshot_read_data(struct us_data *us,
163 			      struct jumpshot_info *info,
164 			      u32 sector,
165 			      u32 sectors)
166 {
167 	unsigned char *command = us->iobuf;
168 	unsigned char *buffer;
169 	unsigned char  thistime;
170 	unsigned int totallen, alloclen;
171 	int len, result;
172 	unsigned int sg_offset = 0;
173 	struct scatterlist *sg = NULL;
174 
175 	// we're working in LBA mode.  according to the ATA spec,
176 	// we can support up to 28-bit addressing.  I don't know if Jumpshot
177 	// supports beyond 24-bit addressing.  It's kind of hard to test
178 	// since it requires > 8GB CF card.
179 
180 	if (sector > 0x0FFFFFFF)
181 		return USB_STOR_TRANSPORT_ERROR;
182 
183 	totallen = sectors * info->ssize;
184 
185 	// Since we don't read more than 64 KB at a time, we have to create
186 	// a bounce buffer and move the data a piece at a time between the
187 	// bounce buffer and the actual transfer buffer.
188 
189 	alloclen = min(totallen, 65536u);
190 	buffer = kmalloc(alloclen, GFP_NOIO);
191 	if (buffer == NULL)
192 		return USB_STOR_TRANSPORT_ERROR;
193 
194 	do {
195 		// loop, never allocate or transfer more than 64k at once
196 		// (min(128k, 255*info->ssize) is the real limit)
197 		len = min(totallen, alloclen);
198 		thistime = (len / info->ssize) & 0xff;
199 
200 		command[0] = 0;
201 		command[1] = thistime;
202 		command[2] = sector & 0xFF;
203 		command[3] = (sector >>  8) & 0xFF;
204 		command[4] = (sector >> 16) & 0xFF;
205 
206 		command[5] = 0xE0 | ((sector >> 24) & 0x0F);
207 		command[6] = 0x20;
208 
209 		// send the setup + command
210 		result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
211 					       0, 0x20, 0, 1, command, 7);
212 		if (result != USB_STOR_XFER_GOOD)
213 			goto leave;
214 
215 		// read the result
216 		result = jumpshot_bulk_read(us, buffer, len);
217 		if (result != USB_STOR_XFER_GOOD)
218 			goto leave;
219 
220 		usb_stor_dbg(us, "%d bytes\n", len);
221 
222 		// Store the data in the transfer buffer
223 		usb_stor_access_xfer_buf(buffer, len, us->srb,
224 				 &sg, &sg_offset, TO_XFER_BUF);
225 
226 		sector += thistime;
227 		totallen -= len;
228 	} while (totallen > 0);
229 
230 	kfree(buffer);
231 	return USB_STOR_TRANSPORT_GOOD;
232 
233  leave:
234 	kfree(buffer);
235 	return USB_STOR_TRANSPORT_ERROR;
236 }
237 
238 
239 static int jumpshot_write_data(struct us_data *us,
240 			       struct jumpshot_info *info,
241 			       u32 sector,
242 			       u32 sectors)
243 {
244 	unsigned char *command = us->iobuf;
245 	unsigned char *buffer;
246 	unsigned char  thistime;
247 	unsigned int totallen, alloclen;
248 	int len, result, waitcount;
249 	unsigned int sg_offset = 0;
250 	struct scatterlist *sg = NULL;
251 
252 	// we're working in LBA mode.  according to the ATA spec,
253 	// we can support up to 28-bit addressing.  I don't know if Jumpshot
254 	// supports beyond 24-bit addressing.  It's kind of hard to test
255 	// since it requires > 8GB CF card.
256 	//
257 	if (sector > 0x0FFFFFFF)
258 		return USB_STOR_TRANSPORT_ERROR;
259 
260 	totallen = sectors * info->ssize;
261 
262 	// Since we don't write more than 64 KB at a time, we have to create
263 	// a bounce buffer and move the data a piece at a time between the
264 	// bounce buffer and the actual transfer buffer.
265 
266 	alloclen = min(totallen, 65536u);
267 	buffer = kmalloc(alloclen, GFP_NOIO);
268 	if (buffer == NULL)
269 		return USB_STOR_TRANSPORT_ERROR;
270 
271 	do {
272 		// loop, never allocate or transfer more than 64k at once
273 		// (min(128k, 255*info->ssize) is the real limit)
274 
275 		len = min(totallen, alloclen);
276 		thistime = (len / info->ssize) & 0xff;
277 
278 		// Get the data from the transfer buffer
279 		usb_stor_access_xfer_buf(buffer, len, us->srb,
280 				&sg, &sg_offset, FROM_XFER_BUF);
281 
282 		command[0] = 0;
283 		command[1] = thistime;
284 		command[2] = sector & 0xFF;
285 		command[3] = (sector >>  8) & 0xFF;
286 		command[4] = (sector >> 16) & 0xFF;
287 
288 		command[5] = 0xE0 | ((sector >> 24) & 0x0F);
289 		command[6] = 0x30;
290 
291 		// send the setup + command
292 		result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
293 			0, 0x20, 0, 1, command, 7);
294 		if (result != USB_STOR_XFER_GOOD)
295 			goto leave;
296 
297 		// send the data
298 		result = jumpshot_bulk_write(us, buffer, len);
299 		if (result != USB_STOR_XFER_GOOD)
300 			goto leave;
301 
302 		// read the result.  apparently the bulk write can complete
303 		// before the jumpshot drive is finished writing.  so we loop
304 		// here until we get a good return code
305 		waitcount = 0;
306 		do {
307 			result = jumpshot_get_status(us);
308 			if (result != USB_STOR_TRANSPORT_GOOD) {
309 				// I have not experimented to find the smallest value.
310 				//
311 				msleep(50);
312 			}
313 		} while ((result != USB_STOR_TRANSPORT_GOOD) && (waitcount < 10));
314 
315 		if (result != USB_STOR_TRANSPORT_GOOD)
316 			usb_stor_dbg(us, "Gah!  Waitcount = 10.  Bad write!?\n");
317 
318 		sector += thistime;
319 		totallen -= len;
320 	} while (totallen > 0);
321 
322 	kfree(buffer);
323 	return result;
324 
325  leave:
326 	kfree(buffer);
327 	return USB_STOR_TRANSPORT_ERROR;
328 }
329 
330 static int jumpshot_id_device(struct us_data *us,
331 			      struct jumpshot_info *info)
332 {
333 	unsigned char *command = us->iobuf;
334 	unsigned char *reply;
335 	int 	 rc;
336 
337 	if (!info)
338 		return USB_STOR_TRANSPORT_ERROR;
339 
340 	command[0] = 0xE0;
341 	command[1] = 0xEC;
342 	reply = kmalloc(512, GFP_NOIO);
343 	if (!reply)
344 		return USB_STOR_TRANSPORT_ERROR;
345 
346 	// send the setup
347 	rc = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
348 				   0, 0x20, 0, 6, command, 2);
349 
350 	if (rc != USB_STOR_XFER_GOOD) {
351 		usb_stor_dbg(us, "Gah! send_control for read_capacity failed\n");
352 		rc = USB_STOR_TRANSPORT_ERROR;
353 		goto leave;
354 	}
355 
356 	// read the reply
357 	rc = jumpshot_bulk_read(us, reply, 512);
358 	if (rc != USB_STOR_XFER_GOOD) {
359 		rc = USB_STOR_TRANSPORT_ERROR;
360 		goto leave;
361 	}
362 
363 	info->sectors = ((u32)(reply[117]) << 24) |
364 			((u32)(reply[116]) << 16) |
365 			((u32)(reply[115]) <<  8) |
366 			((u32)(reply[114])      );
367 
368 	rc = USB_STOR_TRANSPORT_GOOD;
369 
370  leave:
371 	kfree(reply);
372 	return rc;
373 }
374 
375 static int jumpshot_handle_mode_sense(struct us_data *us,
376 				      struct scsi_cmnd * srb,
377 				      int sense_6)
378 {
379 	static unsigned char rw_err_page[12] = {
380 		0x1, 0xA, 0x21, 1, 0, 0, 0, 0, 1, 0, 0, 0
381 	};
382 	static unsigned char cache_page[12] = {
383 		0x8, 0xA, 0x1, 0, 0, 0, 0, 0, 0, 0, 0, 0
384 	};
385 	static unsigned char rbac_page[12] = {
386 		0x1B, 0xA, 0, 0x81, 0, 0, 0, 0, 0, 0, 0, 0
387 	};
388 	static unsigned char timer_page[8] = {
389 		0x1C, 0x6, 0, 0, 0, 0
390 	};
391 	unsigned char pc, page_code;
392 	unsigned int i = 0;
393 	struct jumpshot_info *info = (struct jumpshot_info *) (us->extra);
394 	unsigned char *ptr = us->iobuf;
395 
396 	pc = srb->cmnd[2] >> 6;
397 	page_code = srb->cmnd[2] & 0x3F;
398 
399 	switch (pc) {
400 	   case 0x0:
401 		   usb_stor_dbg(us, "Current values\n");
402 		   break;
403 	   case 0x1:
404 		   usb_stor_dbg(us, "Changeable values\n");
405 		   break;
406 	   case 0x2:
407 		   usb_stor_dbg(us, "Default values\n");
408 		   break;
409 	   case 0x3:
410 		   usb_stor_dbg(us, "Saves values\n");
411 		   break;
412 	}
413 
414 	memset(ptr, 0, 8);
415 	if (sense_6) {
416 		ptr[2] = 0x00;		// WP enable: 0x80
417 		i = 4;
418 	} else {
419 		ptr[3] = 0x00;		// WP enable: 0x80
420 		i = 8;
421 	}
422 
423 	switch (page_code) {
424 	   case 0x0:
425 		// vendor-specific mode
426 		info->sense_key = 0x05;
427 		info->sense_asc = 0x24;
428 		info->sense_ascq = 0x00;
429 		return USB_STOR_TRANSPORT_FAILED;
430 
431 	   case 0x1:
432 		memcpy(ptr + i, rw_err_page, sizeof(rw_err_page));
433 		i += sizeof(rw_err_page);
434 		break;
435 
436 	   case 0x8:
437 		memcpy(ptr + i, cache_page, sizeof(cache_page));
438 		i += sizeof(cache_page);
439 		break;
440 
441 	   case 0x1B:
442 		memcpy(ptr + i, rbac_page, sizeof(rbac_page));
443 		i += sizeof(rbac_page);
444 		break;
445 
446 	   case 0x1C:
447 		memcpy(ptr + i, timer_page, sizeof(timer_page));
448 		i += sizeof(timer_page);
449 		break;
450 
451 	   case 0x3F:
452 		memcpy(ptr + i, timer_page, sizeof(timer_page));
453 		i += sizeof(timer_page);
454 		memcpy(ptr + i, rbac_page, sizeof(rbac_page));
455 		i += sizeof(rbac_page);
456 		memcpy(ptr + i, cache_page, sizeof(cache_page));
457 		i += sizeof(cache_page);
458 		memcpy(ptr + i, rw_err_page, sizeof(rw_err_page));
459 		i += sizeof(rw_err_page);
460 		break;
461 	}
462 
463 	if (sense_6)
464 		ptr[0] = i - 1;
465 	else
466 		((__be16 *) ptr)[0] = cpu_to_be16(i - 2);
467 	usb_stor_set_xfer_buf(ptr, i, srb);
468 
469 	return USB_STOR_TRANSPORT_GOOD;
470 }
471 
472 
473 static void jumpshot_info_destructor(void *extra)
474 {
475 	// this routine is a placeholder...
476 	// currently, we don't allocate any extra blocks so we're okay
477 }
478 
479 
480 
481 // Transport for the Lexar 'Jumpshot'
482 //
483 static int jumpshot_transport(struct scsi_cmnd *srb, struct us_data *us)
484 {
485 	struct jumpshot_info *info;
486 	int rc;
487 	unsigned long block, blocks;
488 	unsigned char *ptr = us->iobuf;
489 	static unsigned char inquiry_response[8] = {
490 		0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
491 	};
492 
493 	if (!us->extra) {
494 		us->extra = kzalloc(sizeof(struct jumpshot_info), GFP_NOIO);
495 		if (!us->extra)
496 			return USB_STOR_TRANSPORT_ERROR;
497 
498 		us->extra_destructor = jumpshot_info_destructor;
499 	}
500 
501 	info = (struct jumpshot_info *) (us->extra);
502 
503 	if (srb->cmnd[0] == INQUIRY) {
504 		usb_stor_dbg(us, "INQUIRY - Returning bogus response\n");
505 		memcpy(ptr, inquiry_response, sizeof(inquiry_response));
506 		fill_inquiry_response(us, ptr, 36);
507 		return USB_STOR_TRANSPORT_GOOD;
508 	}
509 
510 	if (srb->cmnd[0] == READ_CAPACITY) {
511 		info->ssize = 0x200;  // hard coded 512 byte sectors as per ATA spec
512 
513 		rc = jumpshot_get_status(us);
514 		if (rc != USB_STOR_TRANSPORT_GOOD)
515 			return rc;
516 
517 		rc = jumpshot_id_device(us, info);
518 		if (rc != USB_STOR_TRANSPORT_GOOD)
519 			return rc;
520 
521 		usb_stor_dbg(us, "READ_CAPACITY:  %ld sectors, %ld bytes per sector\n",
522 			     info->sectors, info->ssize);
523 
524 		// build the reply
525 		//
526 		((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1);
527 		((__be32 *) ptr)[1] = cpu_to_be32(info->ssize);
528 		usb_stor_set_xfer_buf(ptr, 8, srb);
529 
530 		return USB_STOR_TRANSPORT_GOOD;
531 	}
532 
533 	if (srb->cmnd[0] == MODE_SELECT_10) {
534 		usb_stor_dbg(us, "Gah! MODE_SELECT_10\n");
535 		return USB_STOR_TRANSPORT_ERROR;
536 	}
537 
538 	if (srb->cmnd[0] == READ_10) {
539 		block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
540 			((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
541 
542 		blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
543 
544 		usb_stor_dbg(us, "READ_10: read block 0x%04lx  count %ld\n",
545 			     block, blocks);
546 		return jumpshot_read_data(us, info, block, blocks);
547 	}
548 
549 	if (srb->cmnd[0] == READ_12) {
550 		// I don't think we'll ever see a READ_12 but support it anyway...
551 		//
552 		block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
553 			((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
554 
555 		blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
556 			 ((u32)(srb->cmnd[8]) <<  8) | ((u32)(srb->cmnd[9]));
557 
558 		usb_stor_dbg(us, "READ_12: read block 0x%04lx  count %ld\n",
559 			     block, blocks);
560 		return jumpshot_read_data(us, info, block, blocks);
561 	}
562 
563 	if (srb->cmnd[0] == WRITE_10) {
564 		block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
565 			((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
566 
567 		blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
568 
569 		usb_stor_dbg(us, "WRITE_10: write block 0x%04lx  count %ld\n",
570 			     block, blocks);
571 		return jumpshot_write_data(us, info, block, blocks);
572 	}
573 
574 	if (srb->cmnd[0] == WRITE_12) {
575 		// I don't think we'll ever see a WRITE_12 but support it anyway...
576 		//
577 		block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
578 			((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
579 
580 		blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
581 			 ((u32)(srb->cmnd[8]) <<  8) | ((u32)(srb->cmnd[9]));
582 
583 		usb_stor_dbg(us, "WRITE_12: write block 0x%04lx  count %ld\n",
584 			     block, blocks);
585 		return jumpshot_write_data(us, info, block, blocks);
586 	}
587 
588 
589 	if (srb->cmnd[0] == TEST_UNIT_READY) {
590 		usb_stor_dbg(us, "TEST_UNIT_READY\n");
591 		return jumpshot_get_status(us);
592 	}
593 
594 	if (srb->cmnd[0] == REQUEST_SENSE) {
595 		usb_stor_dbg(us, "REQUEST_SENSE\n");
596 
597 		memset(ptr, 0, 18);
598 		ptr[0] = 0xF0;
599 		ptr[2] = info->sense_key;
600 		ptr[7] = 11;
601 		ptr[12] = info->sense_asc;
602 		ptr[13] = info->sense_ascq;
603 		usb_stor_set_xfer_buf(ptr, 18, srb);
604 
605 		return USB_STOR_TRANSPORT_GOOD;
606 	}
607 
608 	if (srb->cmnd[0] == MODE_SENSE) {
609 		usb_stor_dbg(us, "MODE_SENSE_6 detected\n");
610 		return jumpshot_handle_mode_sense(us, srb, 1);
611 	}
612 
613 	if (srb->cmnd[0] == MODE_SENSE_10) {
614 		usb_stor_dbg(us, "MODE_SENSE_10 detected\n");
615 		return jumpshot_handle_mode_sense(us, srb, 0);
616 	}
617 
618 	if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
619 		// sure.  whatever.  not like we can stop the user from popping
620 		// the media out of the device (no locking doors, etc)
621 		//
622 		return USB_STOR_TRANSPORT_GOOD;
623 	}
624 
625 	if (srb->cmnd[0] == START_STOP) {
626 		/* this is used by sd.c'check_scsidisk_media_change to detect
627 		   media change */
628 		usb_stor_dbg(us, "START_STOP\n");
629 		/* the first jumpshot_id_device after a media change returns
630 		   an error (determined experimentally) */
631 		rc = jumpshot_id_device(us, info);
632 		if (rc == USB_STOR_TRANSPORT_GOOD) {
633 			info->sense_key = NO_SENSE;
634 			srb->result = SUCCESS;
635 		} else {
636 			info->sense_key = UNIT_ATTENTION;
637 			srb->result = SAM_STAT_CHECK_CONDITION;
638 		}
639 		return rc;
640 	}
641 
642 	usb_stor_dbg(us, "Gah! Unknown command: %d (0x%x)\n",
643 		     srb->cmnd[0], srb->cmnd[0]);
644 	info->sense_key = 0x05;
645 	info->sense_asc = 0x20;
646 	info->sense_ascq = 0x00;
647 	return USB_STOR_TRANSPORT_FAILED;
648 }
649 
650 static int jumpshot_probe(struct usb_interface *intf,
651 			 const struct usb_device_id *id)
652 {
653 	struct us_data *us;
654 	int result;
655 
656 	result = usb_stor_probe1(&us, intf, id,
657 			(id - jumpshot_usb_ids) + jumpshot_unusual_dev_list);
658 	if (result)
659 		return result;
660 
661 	us->transport_name  = "Lexar Jumpshot Control/Bulk";
662 	us->transport = jumpshot_transport;
663 	us->transport_reset = usb_stor_Bulk_reset;
664 	us->max_lun = 1;
665 
666 	result = usb_stor_probe2(us);
667 	return result;
668 }
669 
670 static struct usb_driver jumpshot_driver = {
671 	.name =		"ums-jumpshot",
672 	.probe =	jumpshot_probe,
673 	.disconnect =	usb_stor_disconnect,
674 	.suspend =	usb_stor_suspend,
675 	.resume =	usb_stor_resume,
676 	.reset_resume =	usb_stor_reset_resume,
677 	.pre_reset =	usb_stor_pre_reset,
678 	.post_reset =	usb_stor_post_reset,
679 	.id_table =	jumpshot_usb_ids,
680 	.soft_unbind =	1,
681 	.no_dynamic_id = 1,
682 };
683 
684 module_usb_driver(jumpshot_driver);
685