]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Driver for USB Mass Storage compliant devices |
2 | * SCSI layer glue code | |
3 | * | |
1da177e4 LT |
4 | * Current development and maintenance by: |
5 | * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) | |
6 | * | |
7 | * Developed with the assistance of: | |
8 | * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org) | |
9 | * (c) 2000 Stephen J. Gowdy (SGowdy@lbl.gov) | |
10 | * | |
11 | * Initial work by: | |
12 | * (c) 1999 Michael Gee (michael@linuxspecific.com) | |
13 | * | |
14 | * This driver is based on the 'USB Mass Storage Class' document. This | |
15 | * describes in detail the protocol used to communicate with such | |
16 | * devices. Clearly, the designers had SCSI and ATAPI commands in | |
17 | * mind when they created this document. The commands are all very | |
18 | * similar to commands in the SCSI-II and ATAPI specifications. | |
19 | * | |
20 | * It is important to note that in a number of cases this class | |
21 | * exhibits class-specific exemptions from the USB specification. | |
22 | * Notably the usage of NAK, STALL and ACK differs from the norm, in | |
23 | * that they are used to communicate wait, failed and OK on commands. | |
24 | * | |
25 | * Also, for certain devices, the interrupt endpoint is used to convey | |
26 | * status of a command. | |
27 | * | |
28 | * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more | |
29 | * information about this driver. | |
30 | * | |
31 | * This program is free software; you can redistribute it and/or modify it | |
32 | * under the terms of the GNU General Public License as published by the | |
33 | * Free Software Foundation; either version 2, or (at your option) any | |
34 | * later version. | |
35 | * | |
36 | * This program is distributed in the hope that it will be useful, but | |
37 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
38 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
39 | * General Public License for more details. | |
40 | * | |
41 | * You should have received a copy of the GNU General Public License along | |
42 | * with this program; if not, write to the Free Software Foundation, Inc., | |
43 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
44 | */ | |
45 | ||
46 | #include <linux/slab.h> | |
47 | #include <linux/module.h> | |
4186ecf8 | 48 | #include <linux/mutex.h> |
1da177e4 LT |
49 | |
50 | #include <scsi/scsi.h> | |
51 | #include <scsi/scsi_cmnd.h> | |
52 | #include <scsi/scsi_devinfo.h> | |
53 | #include <scsi/scsi_device.h> | |
54 | #include <scsi/scsi_eh.h> | |
55 | ||
56 | #include "usb.h" | |
57 | #include "scsiglue.h" | |
58 | #include "debug.h" | |
59 | #include "transport.h" | |
60 | #include "protocol.h" | |
61 | ||
62 | /*********************************************************************** | |
63 | * Host functions | |
64 | ***********************************************************************/ | |
65 | ||
66 | static const char* host_info(struct Scsi_Host *host) | |
67 | { | |
68 | return "SCSI emulation for USB Mass Storage devices"; | |
69 | } | |
70 | ||
71 | static int slave_alloc (struct scsi_device *sdev) | |
72 | { | |
3a3416b1 AS |
73 | struct us_data *us = host_to_us(sdev->host); |
74 | ||
1da177e4 LT |
75 | /* |
76 | * Set the INQUIRY transfer length to 36. We don't use any of | |
77 | * the extra data and many devices choke if asked for more or | |
78 | * less than 36 bytes. | |
79 | */ | |
80 | sdev->inquiry_len = 36; | |
3a3416b1 | 81 | |
f756cbd4 AS |
82 | /* USB has unusual DMA-alignment requirements: Although the |
83 | * starting address of each scatter-gather element doesn't matter, | |
84 | * the length of each element except the last must be divisible | |
85 | * by the Bulk maxpacket value. There's currently no way to | |
86 | * express this by block-layer constraints, so we'll cop out | |
87 | * and simply require addresses to be aligned at 512-byte | |
88 | * boundaries. This is okay since most block I/O involves | |
89 | * hardware sectors that are multiples of 512 bytes in length, | |
90 | * and since host controllers up through USB 2.0 have maxpacket | |
91 | * values no larger than 512. | |
92 | * | |
93 | * But it doesn't suffice for Wireless USB, where Bulk maxpacket | |
94 | * values can be as large as 2048. To make that work properly | |
95 | * will require changes to the block layer. | |
148d9fe4 | 96 | */ |
f756cbd4 | 97 | blk_queue_update_dma_alignment(sdev->request_queue, (512 - 1)); |
465ff318 | 98 | |
3a3416b1 AS |
99 | /* |
100 | * The UFI spec treates the Peripheral Qualifier bits in an | |
101 | * INQUIRY result as reserved and requires devices to set them | |
102 | * to 0. However the SCSI spec requires these bits to be set | |
103 | * to 3 to indicate when a LUN is not present. | |
104 | * | |
105 | * Let the scanning code know if this target merely sets | |
106 | * Peripheral Device Type to 0x1f to indicate no LUN. | |
107 | */ | |
108 | if (us->subclass == US_SC_UFI) | |
109 | sdev->sdev_target->pdt_1f_for_no_lun = 1; | |
110 | ||
1da177e4 LT |
111 | return 0; |
112 | } | |
113 | ||
114 | static int slave_configure(struct scsi_device *sdev) | |
115 | { | |
116 | struct us_data *us = host_to_us(sdev->host); | |
117 | ||
883d989a PD |
118 | /* Many devices have trouble transfering more than 32KB at a time, |
119 | * while others have trouble with more than 64K. At this time we | |
120 | * are limiting both to 32K (64 sectores). | |
121 | */ | |
7e4d6c38 | 122 | if (us->fflags & (US_FL_MAX_SECTORS_64 | US_FL_MAX_SECTORS_MIN)) { |
33abc04f DM |
123 | unsigned int max_sectors = 64; |
124 | ||
7e4d6c38 | 125 | if (us->fflags & US_FL_MAX_SECTORS_MIN) |
33abc04f DM |
126 | max_sectors = PAGE_CACHE_SIZE >> 9; |
127 | if (sdev->request_queue->max_sectors > max_sectors) | |
128 | blk_queue_max_sectors(sdev->request_queue, | |
129 | max_sectors); | |
130 | } | |
1da177e4 LT |
131 | |
132 | /* We can't put these settings in slave_alloc() because that gets | |
133 | * called before the device type is known. Consequently these | |
134 | * settings can't be overridden via the scsi devinfo mechanism. */ | |
135 | if (sdev->type == TYPE_DISK) { | |
136 | ||
137 | /* Disk-type devices use MODE SENSE(6) if the protocol | |
138 | * (SubClass) is Transparent SCSI, otherwise they use | |
139 | * MODE SENSE(10). */ | |
d277064e | 140 | if (us->subclass != US_SC_SCSI && us->subclass != US_SC_CYP_ATACB) |
1da177e4 LT |
141 | sdev->use_10_for_ms = 1; |
142 | ||
143 | /* Many disks only accept MODE SENSE transfer lengths of | |
144 | * 192 bytes (that's what Windows uses). */ | |
145 | sdev->use_192_bytes_for_3f = 1; | |
146 | ||
147 | /* Some devices don't like MODE SENSE with page=0x3f, | |
148 | * which is the command used for checking if a device | |
149 | * is write-protected. Now that we tell the sd driver | |
150 | * to do a 192-byte transfer with this command the | |
151 | * majority of devices work fine, but a few still can't | |
152 | * handle it. The sd driver will simply assume those | |
153 | * devices are write-enabled. */ | |
7e4d6c38 | 154 | if (us->fflags & US_FL_NO_WP_DETECT) |
1da177e4 LT |
155 | sdev->skip_ms_page_3f = 1; |
156 | ||
157 | /* A number of devices have problems with MODE SENSE for | |
158 | * page x08, so we will skip it. */ | |
159 | sdev->skip_ms_page_8 = 1; | |
160 | ||
161 | /* Some disks return the total number of blocks in response | |
162 | * to READ CAPACITY rather than the highest block number. | |
163 | * If this device makes that mistake, tell the sd driver. */ | |
7e4d6c38 | 164 | if (us->fflags & US_FL_FIX_CAPACITY) |
1da177e4 | 165 | sdev->fix_capacity = 1; |
86dbde9c | 166 | |
61bf54b7 ON |
167 | /* A few disks have two indistinguishable version, one of |
168 | * which reports the correct capacity and the other does not. | |
169 | * The sd driver has to guess which is the case. */ | |
7e4d6c38 | 170 | if (us->fflags & US_FL_CAPACITY_HEURISTICS) |
61bf54b7 ON |
171 | sdev->guess_capacity = 1; |
172 | ||
1537e0ad BE |
173 | /* assume SPC3 or latter devices support sense size > 18 */ |
174 | if (sdev->scsi_level > SCSI_SPC_2) | |
175 | us->fflags |= US_FL_SANE_SENSE; | |
176 | ||
a4e62832 MD |
177 | /* Some devices report a SCSI revision level above 2 but are |
178 | * unable to handle the REPORT LUNS command (for which | |
179 | * support is mandatory at level 3). Since we already have | |
180 | * a Get-Max-LUN request, we won't lose much by setting the | |
181 | * revision level down to 2. The only devices that would be | |
182 | * affected are those with sparse LUNs. */ | |
f3f49065 AS |
183 | if (sdev->scsi_level > SCSI_2) |
184 | sdev->sdev_target->scsi_level = | |
185 | sdev->scsi_level = SCSI_2; | |
a4e62832 | 186 | |
86dbde9c MD |
187 | /* USB-IDE bridges tend to report SK = 0x04 (Non-recoverable |
188 | * Hardware Error) when any low-level error occurs, | |
189 | * recoverable or not. Setting this flag tells the SCSI | |
190 | * midlayer to retry such commands, which frequently will | |
191 | * succeed and fix the error. The worst this can lead to | |
192 | * is an occasional series of retries that will all fail. */ | |
193 | sdev->retry_hwerror = 1; | |
194 | ||
f09e495d MCC |
195 | /* USB disks should allow restart. Some drives spin down |
196 | * automatically, requiring a START-STOP UNIT command. */ | |
197 | sdev->allow_restart = 1; | |
198 | ||
23c3e290 HG |
199 | /* Some USB cardreaders have trouble reading an sdcard's last |
200 | * sector in a larger then 1 sector read, since the performance | |
201 | * impact is negible we set this flag for all USB disks */ | |
202 | sdev->last_sector_bug = 1; | |
1da177e4 LT |
203 | } else { |
204 | ||
205 | /* Non-disk-type devices don't need to blacklist any pages | |
206 | * or to force 192-byte transfer lengths for MODE SENSE. | |
207 | * But they do need to use MODE SENSE(10). */ | |
208 | sdev->use_10_for_ms = 1; | |
209 | } | |
210 | ||
f3f49065 AS |
211 | /* The CB and CBI transports have no way to pass LUN values |
212 | * other than the bits in the second byte of a CDB. But those | |
213 | * bits don't get set to the LUN value if the device reports | |
214 | * scsi_level == 0 (UNKNOWN). Hence such devices must necessarily | |
215 | * be single-LUN. | |
216 | */ | |
217 | if ((us->protocol == US_PR_CB || us->protocol == US_PR_CBI) && | |
218 | sdev->scsi_level == SCSI_UNKNOWN) | |
219 | us->max_lun = 0; | |
220 | ||
1da177e4 LT |
221 | /* Some devices choke when they receive a PREVENT-ALLOW MEDIUM |
222 | * REMOVAL command, so suppress those commands. */ | |
7e4d6c38 | 223 | if (us->fflags & US_FL_NOT_LOCKABLE) |
1da177e4 LT |
224 | sdev->lockable = 0; |
225 | ||
226 | /* this is to satisfy the compiler, tho I don't think the | |
227 | * return code is ever checked anywhere. */ | |
228 | return 0; | |
229 | } | |
230 | ||
231 | /* queue a command */ | |
232 | /* This is always called with scsi_lock(host) held */ | |
233 | static int queuecommand(struct scsi_cmnd *srb, | |
234 | void (*done)(struct scsi_cmnd *)) | |
235 | { | |
236 | struct us_data *us = host_to_us(srb->device->host); | |
237 | ||
441b62c1 | 238 | US_DEBUGP("%s called\n", __func__); |
1da177e4 LT |
239 | |
240 | /* check for state-transition errors */ | |
241 | if (us->srb != NULL) { | |
242 | printk(KERN_ERR USB_STORAGE "Error in %s: us->srb = %p\n", | |
441b62c1 | 243 | __func__, us->srb); |
1da177e4 LT |
244 | return SCSI_MLQUEUE_HOST_BUSY; |
245 | } | |
246 | ||
247 | /* fail the command if we are disconnecting */ | |
7e4d6c38 | 248 | if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { |
1da177e4 LT |
249 | US_DEBUGP("Fail command during disconnect\n"); |
250 | srb->result = DID_NO_CONNECT << 16; | |
251 | done(srb); | |
252 | return 0; | |
253 | } | |
254 | ||
255 | /* enqueue the command and wake up the control thread */ | |
256 | srb->scsi_done = done; | |
257 | us->srb = srb; | |
7119e3c3 | 258 | complete(&us->cmnd_ready); |
1da177e4 LT |
259 | |
260 | return 0; | |
261 | } | |
262 | ||
263 | /*********************************************************************** | |
264 | * Error handling functions | |
265 | ***********************************************************************/ | |
266 | ||
267 | /* Command timeout and abort */ | |
1da177e4 LT |
268 | static int command_abort(struct scsi_cmnd *srb) |
269 | { | |
270 | struct us_data *us = host_to_us(srb->device->host); | |
271 | ||
441b62c1 | 272 | US_DEBUGP("%s called\n", __func__); |
1da177e4 | 273 | |
226173ed MD |
274 | /* us->srb together with the TIMED_OUT, RESETTING, and ABORTING |
275 | * bits are protected by the host lock. */ | |
276 | scsi_lock(us_to_host(us)); | |
277 | ||
1da177e4 LT |
278 | /* Is this command still active? */ |
279 | if (us->srb != srb) { | |
226173ed | 280 | scsi_unlock(us_to_host(us)); |
1da177e4 LT |
281 | US_DEBUGP ("-- nothing to abort\n"); |
282 | return FAILED; | |
283 | } | |
284 | ||
285 | /* Set the TIMED_OUT bit. Also set the ABORTING bit, but only if | |
286 | * a device reset isn't already in progress (to avoid interfering | |
226173ed MD |
287 | * with the reset). Note that we must retain the host lock while |
288 | * calling usb_stor_stop_transport(); otherwise it might interfere | |
289 | * with an auto-reset that begins as soon as we release the lock. */ | |
7e4d6c38 AS |
290 | set_bit(US_FLIDX_TIMED_OUT, &us->dflags); |
291 | if (!test_bit(US_FLIDX_RESETTING, &us->dflags)) { | |
292 | set_bit(US_FLIDX_ABORTING, &us->dflags); | |
1da177e4 LT |
293 | usb_stor_stop_transport(us); |
294 | } | |
226173ed | 295 | scsi_unlock(us_to_host(us)); |
1da177e4 LT |
296 | |
297 | /* Wait for the aborted command to finish */ | |
298 | wait_for_completion(&us->notify); | |
1da177e4 LT |
299 | return SUCCESS; |
300 | } | |
301 | ||
302 | /* This invokes the transport reset mechanism to reset the state of the | |
303 | * device */ | |
1da177e4 LT |
304 | static int device_reset(struct scsi_cmnd *srb) |
305 | { | |
306 | struct us_data *us = host_to_us(srb->device->host); | |
307 | int result; | |
308 | ||
441b62c1 | 309 | US_DEBUGP("%s called\n", __func__); |
1da177e4 | 310 | |
d526875d GKH |
311 | /* lock the device pointers and do the reset */ |
312 | mutex_lock(&(us->dev_mutex)); | |
313 | result = us->transport_reset(us); | |
314 | mutex_unlock(&us->dev_mutex); | |
1da177e4 | 315 | |
4d07ef76 | 316 | return result < 0 ? FAILED : SUCCESS; |
1da177e4 LT |
317 | } |
318 | ||
4d07ef76 | 319 | /* Simulate a SCSI bus reset by resetting the device's USB port. */ |
1da177e4 LT |
320 | static int bus_reset(struct scsi_cmnd *srb) |
321 | { | |
322 | struct us_data *us = host_to_us(srb->device->host); | |
4d07ef76 | 323 | int result; |
1da177e4 | 324 | |
441b62c1 | 325 | US_DEBUGP("%s called\n", __func__); |
4d07ef76 | 326 | result = usb_stor_port_reset(us); |
1da177e4 LT |
327 | return result < 0 ? FAILED : SUCCESS; |
328 | } | |
329 | ||
330 | /* Report a driver-initiated device reset to the SCSI layer. | |
331 | * Calling this for a SCSI-initiated reset is unnecessary but harmless. | |
332 | * The caller must own the SCSI host lock. */ | |
333 | void usb_stor_report_device_reset(struct us_data *us) | |
334 | { | |
335 | int i; | |
336 | struct Scsi_Host *host = us_to_host(us); | |
337 | ||
338 | scsi_report_device_reset(host, 0, 0); | |
7e4d6c38 | 339 | if (us->fflags & US_FL_SCM_MULT_TARG) { |
1da177e4 LT |
340 | for (i = 1; i < host->max_id; ++i) |
341 | scsi_report_device_reset(host, 0, i); | |
342 | } | |
343 | } | |
344 | ||
4d07ef76 MD |
345 | /* Report a driver-initiated bus reset to the SCSI layer. |
346 | * Calling this for a SCSI-initiated reset is unnecessary but harmless. | |
f07600cf | 347 | * The caller must not own the SCSI host lock. */ |
4d07ef76 MD |
348 | void usb_stor_report_bus_reset(struct us_data *us) |
349 | { | |
f07600cf AS |
350 | struct Scsi_Host *host = us_to_host(us); |
351 | ||
352 | scsi_lock(host); | |
353 | scsi_report_bus_reset(host, 0); | |
354 | scsi_unlock(host); | |
4d07ef76 MD |
355 | } |
356 | ||
1da177e4 LT |
357 | /*********************************************************************** |
358 | * /proc/scsi/ functions | |
359 | ***********************************************************************/ | |
360 | ||
361 | /* we use this macro to help us write into the buffer */ | |
362 | #undef SPRINTF | |
363 | #define SPRINTF(args...) \ | |
364 | do { if (pos < buffer+length) pos += sprintf(pos, ## args); } while (0) | |
365 | ||
366 | static int proc_info (struct Scsi_Host *host, char *buffer, | |
367 | char **start, off_t offset, int length, int inout) | |
368 | { | |
369 | struct us_data *us = host_to_us(host); | |
370 | char *pos = buffer; | |
371 | const char *string; | |
372 | ||
373 | /* if someone is sending us data, just throw it away */ | |
374 | if (inout) | |
375 | return length; | |
376 | ||
377 | /* print the controller name */ | |
378 | SPRINTF(" Host scsi%d: usb-storage\n", host->host_no); | |
379 | ||
380 | /* print product, vendor, and serial number strings */ | |
381 | if (us->pusb_dev->manufacturer) | |
382 | string = us->pusb_dev->manufacturer; | |
383 | else if (us->unusual_dev->vendorName) | |
384 | string = us->unusual_dev->vendorName; | |
385 | else | |
386 | string = "Unknown"; | |
387 | SPRINTF(" Vendor: %s\n", string); | |
388 | if (us->pusb_dev->product) | |
389 | string = us->pusb_dev->product; | |
390 | else if (us->unusual_dev->productName) | |
391 | string = us->unusual_dev->productName; | |
392 | else | |
393 | string = "Unknown"; | |
394 | SPRINTF(" Product: %s\n", string); | |
395 | if (us->pusb_dev->serial) | |
396 | string = us->pusb_dev->serial; | |
397 | else | |
398 | string = "None"; | |
399 | SPRINTF("Serial Number: %s\n", string); | |
400 | ||
401 | /* show the protocol and transport */ | |
402 | SPRINTF(" Protocol: %s\n", us->protocol_name); | |
403 | SPRINTF(" Transport: %s\n", us->transport_name); | |
404 | ||
405 | /* show the device flags */ | |
406 | if (pos < buffer + length) { | |
407 | pos += sprintf(pos, " Quirks:"); | |
408 | ||
409 | #define US_FLAG(name, value) \ | |
7e4d6c38 | 410 | if (us->fflags & value) pos += sprintf(pos, " " #name); |
1da177e4 LT |
411 | US_DO_ALL_FLAGS |
412 | #undef US_FLAG | |
413 | ||
414 | *(pos++) = '\n'; | |
415 | } | |
416 | ||
417 | /* | |
418 | * Calculate start of next buffer, and return value. | |
419 | */ | |
420 | *start = buffer + offset; | |
421 | ||
422 | if ((pos - buffer) < offset) | |
423 | return (0); | |
424 | else if ((pos - buffer - offset) < length) | |
425 | return (pos - buffer - offset); | |
426 | else | |
427 | return (length); | |
428 | } | |
429 | ||
430 | /*********************************************************************** | |
431 | * Sysfs interface | |
432 | ***********************************************************************/ | |
433 | ||
434 | /* Output routine for the sysfs max_sectors file */ | |
060b8845 | 435 | static ssize_t show_max_sectors(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
436 | { |
437 | struct scsi_device *sdev = to_scsi_device(dev); | |
438 | ||
439 | return sprintf(buf, "%u\n", sdev->request_queue->max_sectors); | |
440 | } | |
441 | ||
442 | /* Input routine for the sysfs max_sectors file */ | |
060b8845 | 443 | static ssize_t store_max_sectors(struct device *dev, struct device_attribute *attr, const char *buf, |
1da177e4 LT |
444 | size_t count) |
445 | { | |
446 | struct scsi_device *sdev = to_scsi_device(dev); | |
447 | unsigned short ms; | |
448 | ||
449 | if (sscanf(buf, "%hu", &ms) > 0 && ms <= SCSI_DEFAULT_MAX_SECTORS) { | |
450 | blk_queue_max_sectors(sdev->request_queue, ms); | |
451 | return strlen(buf); | |
452 | } | |
453 | return -EINVAL; | |
454 | } | |
455 | ||
456 | static DEVICE_ATTR(max_sectors, S_IRUGO | S_IWUSR, show_max_sectors, | |
457 | store_max_sectors); | |
458 | ||
459 | static struct device_attribute *sysfs_device_attr_list[] = { | |
460 | &dev_attr_max_sectors, | |
461 | NULL, | |
462 | }; | |
463 | ||
464 | /* | |
465 | * this defines our host template, with which we'll allocate hosts | |
466 | */ | |
467 | ||
468 | struct scsi_host_template usb_stor_host_template = { | |
469 | /* basic userland interface stuff */ | |
470 | .name = "usb-storage", | |
471 | .proc_name = "usb-storage", | |
472 | .proc_info = proc_info, | |
473 | .info = host_info, | |
474 | ||
475 | /* command interface -- queued only */ | |
476 | .queuecommand = queuecommand, | |
477 | ||
478 | /* error and abort handlers */ | |
479 | .eh_abort_handler = command_abort, | |
480 | .eh_device_reset_handler = device_reset, | |
481 | .eh_bus_reset_handler = bus_reset, | |
482 | ||
483 | /* queue commands only, only one command per LUN */ | |
484 | .can_queue = 1, | |
485 | .cmd_per_lun = 1, | |
486 | ||
487 | /* unknown initiator id */ | |
488 | .this_id = -1, | |
489 | ||
490 | .slave_alloc = slave_alloc, | |
491 | .slave_configure = slave_configure, | |
492 | ||
493 | /* lots of sg segments can be handled */ | |
494 | .sg_tablesize = SG_ALL, | |
495 | ||
496 | /* limit the total size of a transfer to 120 KB */ | |
497 | .max_sectors = 240, | |
498 | ||
499 | /* merge commands... this seems to help performance, but | |
500 | * periodically someone should test to see which setting is more | |
501 | * optimal. | |
502 | */ | |
503 | .use_clustering = 1, | |
504 | ||
505 | /* emulated HBA */ | |
506 | .emulated = 1, | |
507 | ||
508 | /* we do our own delay after a device or bus reset */ | |
509 | .skip_settle_delay = 1, | |
510 | ||
511 | /* sysfs device attributes */ | |
512 | .sdev_attrs = sysfs_device_attr_list, | |
513 | ||
514 | /* module management */ | |
515 | .module = THIS_MODULE | |
516 | }; | |
517 | ||
518 | /* To Report "Illegal Request: Invalid Field in CDB */ | |
519 | unsigned char usb_stor_sense_invalidCDB[18] = { | |
520 | [0] = 0x70, /* current error */ | |
521 | [2] = ILLEGAL_REQUEST, /* Illegal Request = 0x05 */ | |
522 | [7] = 0x0a, /* additional length */ | |
523 | [12] = 0x24 /* Invalid Field in CDB */ | |
524 | }; | |
525 |