Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* Driver for USB Mass Storage compliant devices |
1da177e4 LT |
2 | * |
3 | * Current development and maintenance by: | |
4 | * (c) 1999-2003 Matthew Dharm (mdharm-usb@one-eyed-alien.net) | |
5 | * | |
6 | * Developed with the assistance of: | |
7 | * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org) | |
e6e244b6 | 8 | * (c) 2003-2009 Alan Stern (stern@rowland.harvard.edu) |
1da177e4 LT |
9 | * |
10 | * Initial work by: | |
11 | * (c) 1999 Michael Gee (michael@linuxspecific.com) | |
12 | * | |
13 | * usb_device_id support by Adam J. Richter (adam@yggdrasil.com): | |
14 | * (c) 2000 Yggdrasil Computing, Inc. | |
15 | * | |
16 | * This driver is based on the 'USB Mass Storage Class' document. This | |
17 | * describes in detail the protocol used to communicate with such | |
18 | * devices. Clearly, the designers had SCSI and ATAPI commands in | |
19 | * mind when they created this document. The commands are all very | |
20 | * similar to commands in the SCSI-II and ATAPI specifications. | |
21 | * | |
22 | * It is important to note that in a number of cases this class | |
23 | * exhibits class-specific exemptions from the USB specification. | |
24 | * Notably the usage of NAK, STALL and ACK differs from the norm, in | |
25 | * that they are used to communicate wait, failed and OK on commands. | |
26 | * | |
27 | * Also, for certain devices, the interrupt endpoint is used to convey | |
28 | * status of a command. | |
29 | * | |
30 | * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more | |
31 | * information about this driver. | |
32 | * | |
33 | * This program is free software; you can redistribute it and/or modify it | |
34 | * under the terms of the GNU General Public License as published by the | |
35 | * Free Software Foundation; either version 2, or (at your option) any | |
36 | * later version. | |
37 | * | |
38 | * This program is distributed in the hope that it will be useful, but | |
39 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
40 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41 | * General Public License for more details. | |
42 | * | |
43 | * You should have received a copy of the GNU General Public License along | |
44 | * with this program; if not, write to the Free Software Foundation, Inc., | |
45 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
46 | */ | |
47 | ||
9eb66f71 MW |
48 | #ifdef CONFIG_USB_STORAGE_DEBUG |
49 | #define DEBUG | |
50 | #endif | |
51 | ||
1da177e4 LT |
52 | #include <linux/sched.h> |
53 | #include <linux/errno.h> | |
7dfb7103 | 54 | #include <linux/freezer.h> |
1da177e4 | 55 | #include <linux/module.h> |
1da177e4 | 56 | #include <linux/slab.h> |
3f13e66e | 57 | #include <linux/kthread.h> |
4186ecf8 | 58 | #include <linux/mutex.h> |
00f8b0c1 | 59 | #include <linux/utsname.h> |
1da177e4 LT |
60 | |
61 | #include <scsi/scsi.h> | |
62 | #include <scsi/scsi_cmnd.h> | |
63 | #include <scsi/scsi_device.h> | |
64 | ||
65 | #include "usb.h" | |
66 | #include "scsiglue.h" | |
67 | #include "transport.h" | |
68 | #include "protocol.h" | |
69 | #include "debug.h" | |
70 | #include "initializers.h" | |
71 | ||
32fe5e39 | 72 | #include "sierra_ms.h" |
281b064f | 73 | #include "option_ms.h" |
1da177e4 | 74 | |
5bfd5b5d HG |
75 | #if IS_ENABLED(CONFIG_USB_UAS) |
76 | #include "uas-detect.h" | |
77 | #endif | |
78 | ||
aa519be3 AM |
79 | #define DRV_NAME "usb-storage" |
80 | ||
1da177e4 LT |
81 | /* Some informational data */ |
82 | MODULE_AUTHOR("Matthew Dharm <mdharm-usb@one-eyed-alien.net>"); | |
83 | MODULE_DESCRIPTION("USB Mass Storage driver for Linux"); | |
84 | MODULE_LICENSE("GPL"); | |
85 | ||
a4a47bc0 | 86 | static unsigned int delay_use = 1; |
1da177e4 LT |
87 | module_param(delay_use, uint, S_IRUGO | S_IWUSR); |
88 | MODULE_PARM_DESC(delay_use, "seconds to delay before using a new device"); | |
89 | ||
c838ea46 AS |
90 | static char quirks[128]; |
91 | module_param_string(quirks, quirks, sizeof(quirks), S_IRUGO | S_IWUSR); | |
d4f373e5 AS |
92 | MODULE_PARM_DESC(quirks, "supplemental list of device IDs and their quirks"); |
93 | ||
1da177e4 | 94 | |
a00828e9 PZ |
95 | /* |
96 | * The entries in this table correspond, line for line, | |
e6e244b6 | 97 | * with the entries in usb_storage_usb_ids[], defined in usual-tables.c. |
1da177e4 | 98 | */ |
1da177e4 LT |
99 | |
100 | /* The vendor name should be kept at eight characters or less, and | |
101 | * the product name should be kept at 16 characters or less. If a device | |
102 | * has the US_FL_FIX_INQUIRY flag, then the vendor and product names | |
a6cd244b | 103 | * normally generated by a device through the INQUIRY response will be |
1da177e4 LT |
104 | * taken from this list, and this is the reason for the above size |
105 | * restriction. However, if the flag is not present, then you | |
106 | * are free to use as many characters as you like. | |
107 | */ | |
108 | ||
1da177e4 LT |
109 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ |
110 | vendor_name, product_name, use_protocol, use_transport, \ | |
111 | init_function, Flags) \ | |
112 | { \ | |
113 | .vendorName = vendor_name, \ | |
114 | .productName = product_name, \ | |
115 | .useProtocol = use_protocol, \ | |
116 | .useTransport = use_transport, \ | |
117 | .initFunction = init_function, \ | |
a00828e9 PZ |
118 | } |
119 | ||
25ff1c31 AS |
120 | #define COMPLIANT_DEV UNUSUAL_DEV |
121 | ||
f61870ee | 122 | #define USUAL_DEV(use_protocol, use_transport) \ |
a00828e9 PZ |
123 | { \ |
124 | .useProtocol = use_protocol, \ | |
125 | .useTransport = use_transport, \ | |
1da177e4 LT |
126 | } |
127 | ||
07c7be3d | 128 | #define UNUSUAL_VENDOR_INTF(idVendor, cl, sc, pr, \ |
129 | vendor_name, product_name, use_protocol, use_transport, \ | |
130 | init_function, Flags) \ | |
131 | { \ | |
132 | .vendorName = vendor_name, \ | |
133 | .productName = product_name, \ | |
134 | .useProtocol = use_protocol, \ | |
135 | .useTransport = use_transport, \ | |
136 | .initFunction = init_function, \ | |
137 | } | |
138 | ||
1da177e4 | 139 | static struct us_unusual_dev us_unusual_dev_list[] = { |
a1631062 | 140 | # include "unusual_devs.h" |
e6e244b6 | 141 | { } /* Terminating entry */ |
1da177e4 LT |
142 | }; |
143 | ||
fd7ff36d | 144 | static struct us_unusual_dev for_dynamic_ids = |
f61870ee | 145 | USUAL_DEV(USB_SC_SCSI, USB_PR_BULK); |
fd7ff36d | 146 | |
e6e244b6 AS |
147 | #undef UNUSUAL_DEV |
148 | #undef COMPLIANT_DEV | |
149 | #undef USUAL_DEV | |
07c7be3d | 150 | #undef UNUSUAL_VENDOR_INTF |
e6e244b6 | 151 | |
c825bab0 ML |
152 | #ifdef CONFIG_LOCKDEP |
153 | ||
154 | static struct lock_class_key us_interface_key[USB_MAXINTERFACES]; | |
155 | ||
156 | static void us_set_lock_class(struct mutex *mutex, | |
157 | struct usb_interface *intf) | |
158 | { | |
159 | struct usb_device *udev = interface_to_usbdev(intf); | |
160 | struct usb_host_config *config = udev->actconfig; | |
161 | int i; | |
162 | ||
163 | for (i = 0; i < config->desc.bNumInterfaces; i++) { | |
164 | if (config->interface[i] == intf) | |
165 | break; | |
166 | } | |
167 | ||
168 | BUG_ON(i == config->desc.bNumInterfaces); | |
169 | ||
170 | lockdep_set_class(mutex, &us_interface_key[i]); | |
171 | } | |
172 | ||
173 | #else | |
174 | ||
175 | static void us_set_lock_class(struct mutex *mutex, | |
176 | struct usb_interface *intf) | |
177 | { | |
178 | } | |
179 | ||
180 | #endif | |
ce2596df AS |
181 | |
182 | #ifdef CONFIG_PM /* Minimal support for suspend and resume */ | |
183 | ||
e6e244b6 | 184 | int usb_stor_suspend(struct usb_interface *iface, pm_message_t message) |
ce2596df AS |
185 | { |
186 | struct us_data *us = usb_get_intfdata(iface); | |
187 | ||
188 | /* Wait until no command is running */ | |
4186ecf8 | 189 | mutex_lock(&us->dev_mutex); |
ce2596df | 190 | |
7931e1c6 MD |
191 | if (us->suspend_resume_hook) |
192 | (us->suspend_resume_hook)(us, US_SUSPEND); | |
ce2596df | 193 | |
d526875d GKH |
194 | /* When runtime PM is working, we'll set a flag to indicate |
195 | * whether we should autoresume when a SCSI request arrives. */ | |
196 | ||
4186ecf8 | 197 | mutex_unlock(&us->dev_mutex); |
ce2596df AS |
198 | return 0; |
199 | } | |
e6e244b6 | 200 | EXPORT_SYMBOL_GPL(usb_stor_suspend); |
ce2596df | 201 | |
e6e244b6 | 202 | int usb_stor_resume(struct usb_interface *iface) |
ce2596df AS |
203 | { |
204 | struct us_data *us = usb_get_intfdata(iface); | |
205 | ||
d526875d | 206 | mutex_lock(&us->dev_mutex); |
8dfe4b14 | 207 | |
7931e1c6 MD |
208 | if (us->suspend_resume_hook) |
209 | (us->suspend_resume_hook)(us, US_RESUME); | |
ce2596df | 210 | |
d526875d | 211 | mutex_unlock(&us->dev_mutex); |
ce2596df AS |
212 | return 0; |
213 | } | |
e6e244b6 | 214 | EXPORT_SYMBOL_GPL(usb_stor_resume); |
ce2596df | 215 | |
e6e244b6 | 216 | int usb_stor_reset_resume(struct usb_interface *iface) |
f07600cf AS |
217 | { |
218 | struct us_data *us = usb_get_intfdata(iface); | |
219 | ||
f07600cf AS |
220 | /* Report the reset to the SCSI core */ |
221 | usb_stor_report_bus_reset(us); | |
222 | ||
223 | /* FIXME: Notify the subdrivers that they need to reinitialize | |
224 | * the device */ | |
225 | return 0; | |
226 | } | |
e6e244b6 | 227 | EXPORT_SYMBOL_GPL(usb_stor_reset_resume); |
f07600cf | 228 | |
ce2596df | 229 | #endif /* CONFIG_PM */ |
1da177e4 | 230 | |
47104b0d AS |
231 | /* |
232 | * The next two routines get called just before and just after | |
233 | * a USB port reset, whether from this driver or a different one. | |
234 | */ | |
235 | ||
e6e244b6 | 236 | int usb_stor_pre_reset(struct usb_interface *iface) |
47104b0d AS |
237 | { |
238 | struct us_data *us = usb_get_intfdata(iface); | |
239 | ||
47104b0d AS |
240 | /* Make sure no command runs during the reset */ |
241 | mutex_lock(&us->dev_mutex); | |
f07600cf | 242 | return 0; |
47104b0d | 243 | } |
e6e244b6 | 244 | EXPORT_SYMBOL_GPL(usb_stor_pre_reset); |
47104b0d | 245 | |
e6e244b6 | 246 | int usb_stor_post_reset(struct usb_interface *iface) |
47104b0d AS |
247 | { |
248 | struct us_data *us = usb_get_intfdata(iface); | |
249 | ||
47104b0d | 250 | /* Report the reset to the SCSI core */ |
47104b0d | 251 | usb_stor_report_bus_reset(us); |
47104b0d AS |
252 | |
253 | /* FIXME: Notify the subdrivers that they need to reinitialize | |
254 | * the device */ | |
0458d5b4 | 255 | |
f07600cf AS |
256 | mutex_unlock(&us->dev_mutex); |
257 | return 0; | |
47104b0d | 258 | } |
e6e244b6 | 259 | EXPORT_SYMBOL_GPL(usb_stor_post_reset); |
47104b0d | 260 | |
1da177e4 LT |
261 | /* |
262 | * fill_inquiry_response takes an unsigned char array (which must | |
263 | * be at least 36 characters) and populates the vendor name, | |
264 | * product name, and revision fields. Then the array is copied | |
265 | * into the SCSI command's response buffer (oddly enough | |
266 | * called request_buffer). data_len contains the length of the | |
267 | * data array, which again must be at least 36. | |
268 | */ | |
269 | ||
270 | void fill_inquiry_response(struct us_data *us, unsigned char *data, | |
271 | unsigned int data_len) | |
272 | { | |
a1631062 | 273 | if (data_len < 36) /* You lose. */ |
1da177e4 LT |
274 | return; |
275 | ||
f3f6faa9 | 276 | memset(data+8, ' ', 28); |
db2c8624 | 277 | if (data[0]&0x20) { /* USB device currently not connected. Return |
1da177e4 LT |
278 | peripheral qualifier 001b ("...however, the |
279 | physical device is not currently connected | |
280 | to this logical unit") and leave vendor and | |
281 | product identification empty. ("If the target | |
282 | does store some of the INQUIRY data on the | |
a1631062 | 283 | device, it may return zeros or ASCII spaces |
1da177e4 LT |
284 | (20h) in those fields until the data is |
285 | available from the device."). */ | |
1da177e4 LT |
286 | } else { |
287 | u16 bcdDevice = le16_to_cpu(us->pusb_dev->descriptor.bcdDevice); | |
f3f6faa9 AS |
288 | int n; |
289 | ||
290 | n = strlen(us->unusual_dev->vendorName); | |
291 | memcpy(data+8, us->unusual_dev->vendorName, min(8, n)); | |
292 | n = strlen(us->unusual_dev->productName); | |
293 | memcpy(data+16, us->unusual_dev->productName, min(16, n)); | |
294 | ||
1da177e4 LT |
295 | data[32] = 0x30 + ((bcdDevice>>12) & 0x0F); |
296 | data[33] = 0x30 + ((bcdDevice>>8) & 0x0F); | |
297 | data[34] = 0x30 + ((bcdDevice>>4) & 0x0F); | |
298 | data[35] = 0x30 + ((bcdDevice) & 0x0F); | |
299 | } | |
300 | ||
301 | usb_stor_set_xfer_buf(data, data_len, us->srb); | |
302 | } | |
e6e244b6 | 303 | EXPORT_SYMBOL_GPL(fill_inquiry_response); |
1da177e4 LT |
304 | |
305 | static int usb_stor_control_thread(void * __us) | |
306 | { | |
307 | struct us_data *us = (struct us_data *)__us; | |
308 | struct Scsi_Host *host = us_to_host(us); | |
309 | ||
db2c8624 | 310 | for (;;) { |
191648d0 | 311 | usb_stor_dbg(us, "*** thread sleeping\n"); |
7119e3c3 | 312 | if (wait_for_completion_interruptible(&us->cmnd_ready)) |
1da177e4 | 313 | break; |
7119e3c3 | 314 | |
191648d0 | 315 | usb_stor_dbg(us, "*** thread awakened\n"); |
1da177e4 LT |
316 | |
317 | /* lock the device pointers */ | |
4186ecf8 | 318 | mutex_lock(&(us->dev_mutex)); |
1da177e4 | 319 | |
543f7810 AS |
320 | /* lock access to the state */ |
321 | scsi_lock(host); | |
322 | ||
323 | /* When we are called with no command pending, we're done */ | |
324 | if (us->srb == NULL) { | |
325 | scsi_unlock(host); | |
4186ecf8 | 326 | mutex_unlock(&us->dev_mutex); |
191648d0 | 327 | usb_stor_dbg(us, "-- exiting\n"); |
1da177e4 LT |
328 | break; |
329 | } | |
330 | ||
1da177e4 | 331 | /* has the command timed out *already* ? */ |
7e4d6c38 | 332 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { |
1da177e4 LT |
333 | us->srb->result = DID_ABORT << 16; |
334 | goto SkipForAbort; | |
335 | } | |
336 | ||
337 | scsi_unlock(host); | |
338 | ||
a1631062 | 339 | /* reject the command if the direction indicator |
1da177e4 LT |
340 | * is UNKNOWN |
341 | */ | |
342 | if (us->srb->sc_data_direction == DMA_BIDIRECTIONAL) { | |
191648d0 | 343 | usb_stor_dbg(us, "UNKNOWN data direction\n"); |
1da177e4 LT |
344 | us->srb->result = DID_ERROR << 16; |
345 | } | |
346 | ||
347 | /* reject if target != 0 or if LUN is higher than | |
348 | * the maximum known LUN | |
349 | */ | |
a1631062 | 350 | else if (us->srb->device->id && |
7e4d6c38 | 351 | !(us->fflags & US_FL_SCM_MULT_TARG)) { |
9cb78c16 HR |
352 | usb_stor_dbg(us, "Bad target number (%d:%llu)\n", |
353 | us->srb->device->id, | |
354 | us->srb->device->lun); | |
1da177e4 LT |
355 | us->srb->result = DID_BAD_TARGET << 16; |
356 | } | |
357 | ||
358 | else if (us->srb->device->lun > us->max_lun) { | |
9cb78c16 HR |
359 | usb_stor_dbg(us, "Bad LUN (%d:%llu)\n", |
360 | us->srb->device->id, | |
361 | us->srb->device->lun); | |
1da177e4 LT |
362 | us->srb->result = DID_BAD_TARGET << 16; |
363 | } | |
364 | ||
a1631062 | 365 | /* Handle those devices which need us to fake |
1da177e4 LT |
366 | * their inquiry data */ |
367 | else if ((us->srb->cmnd[0] == INQUIRY) && | |
7e4d6c38 | 368 | (us->fflags & US_FL_FIX_INQUIRY)) { |
1da177e4 LT |
369 | unsigned char data_ptr[36] = { |
370 | 0x00, 0x80, 0x02, 0x02, | |
371 | 0x1F, 0x00, 0x00, 0x00}; | |
372 | ||
191648d0 | 373 | usb_stor_dbg(us, "Faking INQUIRY command\n"); |
1da177e4 LT |
374 | fill_inquiry_response(us, data_ptr, 36); |
375 | us->srb->result = SAM_STAT_GOOD; | |
376 | } | |
377 | ||
378 | /* we've got a command, let's do it! */ | |
379 | else { | |
191648d0 | 380 | US_DEBUG(usb_stor_show_command(us, us->srb)); |
1da177e4 | 381 | us->proto_handler(us->srb, us); |
f283925f | 382 | usb_mark_last_busy(us->pusb_dev); |
1da177e4 LT |
383 | } |
384 | ||
385 | /* lock access to the state */ | |
386 | scsi_lock(host); | |
387 | ||
388 | /* indicate that the command is done */ | |
543f7810 | 389 | if (us->srb->result != DID_ABORT << 16) { |
191648d0 JP |
390 | usb_stor_dbg(us, "scsi cmd done, result=0x%x\n", |
391 | us->srb->result); | |
1da177e4 LT |
392 | us->srb->scsi_done(us->srb); |
393 | } else { | |
394 | SkipForAbort: | |
191648d0 | 395 | usb_stor_dbg(us, "scsi command aborted\n"); |
1da177e4 LT |
396 | } |
397 | ||
398 | /* If an abort request was received we need to signal that | |
399 | * the abort has finished. The proper test for this is | |
400 | * the TIMED_OUT flag, not srb->result == DID_ABORT, because | |
226173ed MD |
401 | * the timeout might have occurred after the command had |
402 | * already completed with a different result code. */ | |
7e4d6c38 | 403 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { |
1da177e4 LT |
404 | complete(&(us->notify)); |
405 | ||
226173ed | 406 | /* Allow USB transfers to resume */ |
7e4d6c38 AS |
407 | clear_bit(US_FLIDX_ABORTING, &us->dflags); |
408 | clear_bit(US_FLIDX_TIMED_OUT, &us->dflags); | |
226173ed MD |
409 | } |
410 | ||
1da177e4 LT |
411 | /* finished working on this command */ |
412 | us->srb = NULL; | |
413 | scsi_unlock(host); | |
414 | ||
415 | /* unlock the device pointers */ | |
4186ecf8 | 416 | mutex_unlock(&us->dev_mutex); |
1da177e4 LT |
417 | } /* for (;;) */ |
418 | ||
ed76cacb AS |
419 | /* Wait until we are told to stop */ |
420 | for (;;) { | |
421 | set_current_state(TASK_INTERRUPTIBLE); | |
422 | if (kthread_should_stop()) | |
423 | break; | |
424 | schedule(); | |
425 | } | |
426 | __set_current_state(TASK_RUNNING); | |
427 | return 0; | |
a1631062 | 428 | } |
1da177e4 LT |
429 | |
430 | /*********************************************************************** | |
431 | * Device probing and disconnecting | |
432 | ***********************************************************************/ | |
433 | ||
434 | /* Associate our private data with the USB device */ | |
435 | static int associate_dev(struct us_data *us, struct usb_interface *intf) | |
436 | { | |
1da177e4 LT |
437 | /* Fill in the device-related fields */ |
438 | us->pusb_dev = interface_to_usbdev(intf); | |
439 | us->pusb_intf = intf; | |
440 | us->ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
191648d0 JP |
441 | usb_stor_dbg(us, "Vendor: 0x%04x, Product: 0x%04x, Revision: 0x%04x\n", |
442 | le16_to_cpu(us->pusb_dev->descriptor.idVendor), | |
443 | le16_to_cpu(us->pusb_dev->descriptor.idProduct), | |
444 | le16_to_cpu(us->pusb_dev->descriptor.bcdDevice)); | |
445 | usb_stor_dbg(us, "Interface Subclass: 0x%02x, Protocol: 0x%02x\n", | |
446 | intf->cur_altsetting->desc.bInterfaceSubClass, | |
447 | intf->cur_altsetting->desc.bInterfaceProtocol); | |
1da177e4 LT |
448 | |
449 | /* Store our private data in the interface */ | |
450 | usb_set_intfdata(intf, us); | |
451 | ||
0ede76fc AS |
452 | /* Allocate the control/setup and DMA-mapped buffers */ |
453 | us->cr = kmalloc(sizeof(*us->cr), GFP_KERNEL); | |
191648d0 | 454 | if (!us->cr) |
1da177e4 | 455 | return -ENOMEM; |
1da177e4 | 456 | |
997ea58e | 457 | us->iobuf = usb_alloc_coherent(us->pusb_dev, US_IOBUF_SIZE, |
1da177e4 LT |
458 | GFP_KERNEL, &us->iobuf_dma); |
459 | if (!us->iobuf) { | |
191648d0 | 460 | usb_stor_dbg(us, "I/O buffer allocation failed\n"); |
1da177e4 LT |
461 | return -ENOMEM; |
462 | } | |
463 | return 0; | |
464 | } | |
465 | ||
c838ea46 AS |
466 | /* Works only for digits and letters, but small and fast */ |
467 | #define TOLOWER(x) ((x) | 0x20) | |
468 | ||
d4f373e5 | 469 | /* Adjust device flags based on the "quirks=" module parameter */ |
d24d481b | 470 | void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags) |
d4f373e5 | 471 | { |
c838ea46 | 472 | char *p; |
d24d481b HG |
473 | u16 vid = le16_to_cpu(udev->descriptor.idVendor); |
474 | u16 pid = le16_to_cpu(udev->descriptor.idProduct); | |
c838ea46 | 475 | unsigned f = 0; |
a91b593e | 476 | unsigned int mask = (US_FL_SANE_SENSE | US_FL_BAD_SENSE | |
d24d481b | 477 | US_FL_FIX_CAPACITY | US_FL_IGNORE_UAS | |
c838ea46 | 478 | US_FL_CAPACITY_HEURISTICS | US_FL_IGNORE_DEVICE | |
d4f373e5 | 479 | US_FL_NOT_LOCKABLE | US_FL_MAX_SECTORS_64 | |
c838ea46 | 480 | US_FL_CAPACITY_OK | US_FL_IGNORE_RESIDUE | |
5116901d | 481 | US_FL_SINGLE_LUN | US_FL_NO_WP_DETECT | |
21c13a4f | 482 | US_FL_NO_READ_DISC_INFO | US_FL_NO_READ_CAPACITY_16 | |
59307852 | 483 | US_FL_INITIAL_READ10 | US_FL_WRITE_CACHE | |
ee136af4 | 484 | US_FL_NO_ATA_1X | US_FL_NO_REPORT_OPCODES | |
13630746 | 485 | US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS); |
c838ea46 AS |
486 | |
487 | p = quirks; | |
488 | while (*p) { | |
489 | /* Each entry consists of VID:PID:flags */ | |
490 | if (vid == simple_strtoul(p, &p, 16) && | |
491 | *p == ':' && | |
492 | pid == simple_strtoul(p+1, &p, 16) && | |
493 | *p == ':') | |
d4f373e5 | 494 | break; |
c838ea46 AS |
495 | |
496 | /* Move forward to the next entry */ | |
497 | while (*p) { | |
498 | if (*p++ == ',') | |
499 | break; | |
d4f373e5 AS |
500 | } |
501 | } | |
c838ea46 AS |
502 | if (!*p) /* No match */ |
503 | return; | |
504 | ||
505 | /* Collect the flags */ | |
506 | while (*++p && *p != ',') { | |
507 | switch (TOLOWER(*p)) { | |
508 | case 'a': | |
509 | f |= US_FL_SANE_SENSE; | |
510 | break; | |
a0bb1081 AS |
511 | case 'b': |
512 | f |= US_FL_BAD_SENSE; | |
513 | break; | |
c838ea46 AS |
514 | case 'c': |
515 | f |= US_FL_FIX_CAPACITY; | |
516 | break; | |
5116901d KR |
517 | case 'd': |
518 | f |= US_FL_NO_READ_DISC_INFO; | |
519 | break; | |
520 | case 'e': | |
521 | f |= US_FL_NO_READ_CAPACITY_16; | |
522 | break; | |
734016b0 HG |
523 | case 'f': |
524 | f |= US_FL_NO_REPORT_OPCODES; | |
525 | break; | |
ee136af4 HG |
526 | case 'g': |
527 | f |= US_FL_MAX_SECTORS_240; | |
528 | break; | |
c838ea46 AS |
529 | case 'h': |
530 | f |= US_FL_CAPACITY_HEURISTICS; | |
531 | break; | |
532 | case 'i': | |
533 | f |= US_FL_IGNORE_DEVICE; | |
534 | break; | |
13630746 HG |
535 | case 'j': |
536 | f |= US_FL_NO_REPORT_LUNS; | |
537 | break; | |
c838ea46 AS |
538 | case 'l': |
539 | f |= US_FL_NOT_LOCKABLE; | |
540 | break; | |
541 | case 'm': | |
542 | f |= US_FL_MAX_SECTORS_64; | |
543 | break; | |
21c13a4f AS |
544 | case 'n': |
545 | f |= US_FL_INITIAL_READ10; | |
546 | break; | |
c838ea46 AS |
547 | case 'o': |
548 | f |= US_FL_CAPACITY_OK; | |
549 | break; | |
eaa05dfc NJ |
550 | case 'p': |
551 | f |= US_FL_WRITE_CACHE; | |
552 | break; | |
c838ea46 AS |
553 | case 'r': |
554 | f |= US_FL_IGNORE_RESIDUE; | |
555 | break; | |
556 | case 's': | |
557 | f |= US_FL_SINGLE_LUN; | |
558 | break; | |
59307852 HG |
559 | case 't': |
560 | f |= US_FL_NO_ATA_1X; | |
561 | break; | |
d24d481b HG |
562 | case 'u': |
563 | f |= US_FL_IGNORE_UAS; | |
564 | break; | |
c838ea46 AS |
565 | case 'w': |
566 | f |= US_FL_NO_WP_DETECT; | |
567 | break; | |
568 | /* Ignore unrecognized flag characters */ | |
569 | } | |
570 | } | |
d24d481b | 571 | *fflags = (*fflags & ~mask) | f; |
d4f373e5 | 572 | } |
d24d481b | 573 | EXPORT_SYMBOL_GPL(usb_stor_adjust_quirks); |
d4f373e5 | 574 | |
1da177e4 | 575 | /* Get the unusual_devs entries and the string descriptors */ |
e6e244b6 AS |
576 | static int get_device_info(struct us_data *us, const struct usb_device_id *id, |
577 | struct us_unusual_dev *unusual_dev) | |
1da177e4 LT |
578 | { |
579 | struct usb_device *dev = us->pusb_dev; | |
580 | struct usb_interface_descriptor *idesc = | |
581 | &us->pusb_intf->cur_altsetting->desc; | |
cbd3af54 | 582 | struct device *pdev = &us->pusb_intf->dev; |
1da177e4 LT |
583 | |
584 | /* Store the entries */ | |
585 | us->unusual_dev = unusual_dev; | |
8fa7fd74 | 586 | us->subclass = (unusual_dev->useProtocol == USB_SC_DEVICE) ? |
1da177e4 LT |
587 | idesc->bInterfaceSubClass : |
588 | unusual_dev->useProtocol; | |
8fa7fd74 | 589 | us->protocol = (unusual_dev->useTransport == USB_PR_DEVICE) ? |
1da177e4 LT |
590 | idesc->bInterfaceProtocol : |
591 | unusual_dev->useTransport; | |
f61870ee | 592 | us->fflags = id->driver_info; |
d24d481b | 593 | usb_stor_adjust_quirks(us->pusb_dev, &us->fflags); |
1da177e4 | 594 | |
7e4d6c38 | 595 | if (us->fflags & US_FL_IGNORE_DEVICE) { |
cbd3af54 | 596 | dev_info(pdev, "device ignored\n"); |
3c332422 DD |
597 | return -ENODEV; |
598 | } | |
599 | ||
1da177e4 LT |
600 | /* |
601 | * This flag is only needed when we're in high-speed, so let's | |
602 | * disable it if we're in full-speed | |
603 | */ | |
604 | if (dev->speed != USB_SPEED_HIGH) | |
7e4d6c38 | 605 | us->fflags &= ~US_FL_GO_SLOW; |
1da177e4 | 606 | |
39f2f080 FC |
607 | if (us->fflags) |
608 | dev_info(pdev, "Quirks match for vid %04x pid %04x: %lx\n", | |
609 | le16_to_cpu(dev->descriptor.idVendor), | |
610 | le16_to_cpu(dev->descriptor.idProduct), | |
611 | us->fflags); | |
612 | ||
1da177e4 LT |
613 | /* Log a message if a non-generic unusual_dev entry contains an |
614 | * unnecessary subclass or protocol override. This may stimulate | |
615 | * reports from users that will help us remove unneeded entries | |
616 | * from the unusual_devs.h table. | |
617 | */ | |
618 | if (id->idVendor || id->idProduct) { | |
4c4c9432 | 619 | static const char *msgs[3] = { |
1da177e4 LT |
620 | "an unneeded SubClass entry", |
621 | "an unneeded Protocol entry", | |
622 | "unneeded SubClass and Protocol entries"}; | |
623 | struct usb_device_descriptor *ddesc = &dev->descriptor; | |
624 | int msg = -1; | |
625 | ||
8fa7fd74 | 626 | if (unusual_dev->useProtocol != USB_SC_DEVICE && |
1da177e4 LT |
627 | us->subclass == idesc->bInterfaceSubClass) |
628 | msg += 1; | |
8fa7fd74 | 629 | if (unusual_dev->useTransport != USB_PR_DEVICE && |
1da177e4 LT |
630 | us->protocol == idesc->bInterfaceProtocol) |
631 | msg += 2; | |
7e4d6c38 | 632 | if (msg >= 0 && !(us->fflags & US_FL_NEED_OVERRIDE)) |
cbd3af54 FC |
633 | dev_notice(pdev, "This device " |
634 | "(%04x,%04x,%04x S %02x P %02x)" | |
635 | " has %s in unusual_devs.h (kernel" | |
636 | " %s)\n" | |
637 | " Please send a copy of this message to " | |
638 | "<linux-usb@vger.kernel.org> and " | |
639 | "<usb-storage@lists.one-eyed-alien.net>\n", | |
640 | le16_to_cpu(ddesc->idVendor), | |
641 | le16_to_cpu(ddesc->idProduct), | |
642 | le16_to_cpu(ddesc->bcdDevice), | |
643 | idesc->bInterfaceSubClass, | |
644 | idesc->bInterfaceProtocol, | |
645 | msgs[msg], | |
646 | utsname()->release); | |
1da177e4 | 647 | } |
3c332422 DD |
648 | |
649 | return 0; | |
1da177e4 LT |
650 | } |
651 | ||
652 | /* Get the transport settings */ | |
e6e244b6 | 653 | static void get_transport(struct us_data *us) |
1da177e4 LT |
654 | { |
655 | switch (us->protocol) { | |
8fa7fd74 | 656 | case USB_PR_CB: |
1da177e4 LT |
657 | us->transport_name = "Control/Bulk"; |
658 | us->transport = usb_stor_CB_transport; | |
659 | us->transport_reset = usb_stor_CB_reset; | |
660 | us->max_lun = 7; | |
661 | break; | |
662 | ||
8fa7fd74 | 663 | case USB_PR_CBI: |
1da177e4 | 664 | us->transport_name = "Control/Bulk/Interrupt"; |
64648a9d | 665 | us->transport = usb_stor_CB_transport; |
1da177e4 LT |
666 | us->transport_reset = usb_stor_CB_reset; |
667 | us->max_lun = 7; | |
668 | break; | |
669 | ||
8fa7fd74 | 670 | case USB_PR_BULK: |
1da177e4 LT |
671 | us->transport_name = "Bulk"; |
672 | us->transport = usb_stor_Bulk_transport; | |
673 | us->transport_reset = usb_stor_Bulk_reset; | |
674 | break; | |
1da177e4 | 675 | } |
1da177e4 LT |
676 | } |
677 | ||
678 | /* Get the protocol settings */ | |
e6e244b6 | 679 | static void get_protocol(struct us_data *us) |
1da177e4 LT |
680 | { |
681 | switch (us->subclass) { | |
8fa7fd74 | 682 | case USB_SC_RBC: |
1da177e4 LT |
683 | us->protocol_name = "Reduced Block Commands (RBC)"; |
684 | us->proto_handler = usb_stor_transparent_scsi_command; | |
685 | break; | |
686 | ||
8fa7fd74 | 687 | case USB_SC_8020: |
1da177e4 | 688 | us->protocol_name = "8020i"; |
3dae5345 | 689 | us->proto_handler = usb_stor_pad12_command; |
1da177e4 LT |
690 | us->max_lun = 0; |
691 | break; | |
692 | ||
8fa7fd74 | 693 | case USB_SC_QIC: |
1da177e4 | 694 | us->protocol_name = "QIC-157"; |
3dae5345 | 695 | us->proto_handler = usb_stor_pad12_command; |
1da177e4 LT |
696 | us->max_lun = 0; |
697 | break; | |
698 | ||
8fa7fd74 | 699 | case USB_SC_8070: |
1da177e4 | 700 | us->protocol_name = "8070i"; |
3dae5345 | 701 | us->proto_handler = usb_stor_pad12_command; |
1da177e4 LT |
702 | us->max_lun = 0; |
703 | break; | |
704 | ||
8fa7fd74 | 705 | case USB_SC_SCSI: |
1da177e4 LT |
706 | us->protocol_name = "Transparent SCSI"; |
707 | us->proto_handler = usb_stor_transparent_scsi_command; | |
708 | break; | |
709 | ||
8fa7fd74 | 710 | case USB_SC_UFI: |
1da177e4 LT |
711 | us->protocol_name = "Uniform Floppy Interface (UFI)"; |
712 | us->proto_handler = usb_stor_ufi_command; | |
713 | break; | |
1da177e4 | 714 | } |
1da177e4 LT |
715 | } |
716 | ||
717 | /* Get the pipe settings */ | |
718 | static int get_pipes(struct us_data *us) | |
719 | { | |
720 | struct usb_host_interface *altsetting = | |
721 | us->pusb_intf->cur_altsetting; | |
722 | int i; | |
723 | struct usb_endpoint_descriptor *ep; | |
724 | struct usb_endpoint_descriptor *ep_in = NULL; | |
725 | struct usb_endpoint_descriptor *ep_out = NULL; | |
726 | struct usb_endpoint_descriptor *ep_int = NULL; | |
727 | ||
728 | /* | |
1096f780 | 729 | * Find the first endpoint of each type we need. |
1da177e4 | 730 | * We are expecting a minimum of 2 endpoints - in and out (bulk). |
1096f780 | 731 | * An optional interrupt-in is OK (necessary for CBI protocol). |
1da177e4 LT |
732 | * We will ignore any others. |
733 | */ | |
734 | for (i = 0; i < altsetting->desc.bNumEndpoints; i++) { | |
735 | ep = &altsetting->endpoint[i].desc; | |
736 | ||
04720747 | 737 | if (usb_endpoint_xfer_bulk(ep)) { |
1096f780 AS |
738 | if (usb_endpoint_dir_in(ep)) { |
739 | if (!ep_in) | |
740 | ep_in = ep; | |
741 | } else { | |
742 | if (!ep_out) | |
743 | ep_out = ep; | |
744 | } | |
1da177e4 LT |
745 | } |
746 | ||
1096f780 AS |
747 | else if (usb_endpoint_is_int_in(ep)) { |
748 | if (!ep_int) | |
749 | ep_int = ep; | |
1da177e4 LT |
750 | } |
751 | } | |
752 | ||
8fa7fd74 | 753 | if (!ep_in || !ep_out || (us->protocol == USB_PR_CBI && !ep_int)) { |
191648d0 | 754 | usb_stor_dbg(us, "Endpoint sanity check failed! Rejecting dev.\n"); |
1da177e4 LT |
755 | return -EIO; |
756 | } | |
757 | ||
758 | /* Calculate and store the pipe values */ | |
759 | us->send_ctrl_pipe = usb_sndctrlpipe(us->pusb_dev, 0); | |
760 | us->recv_ctrl_pipe = usb_rcvctrlpipe(us->pusb_dev, 0); | |
761 | us->send_bulk_pipe = usb_sndbulkpipe(us->pusb_dev, | |
2e0fe709 | 762 | usb_endpoint_num(ep_out)); |
a1631062 | 763 | us->recv_bulk_pipe = usb_rcvbulkpipe(us->pusb_dev, |
2e0fe709 | 764 | usb_endpoint_num(ep_in)); |
1da177e4 LT |
765 | if (ep_int) { |
766 | us->recv_intr_pipe = usb_rcvintpipe(us->pusb_dev, | |
2e0fe709 | 767 | usb_endpoint_num(ep_int)); |
1da177e4 LT |
768 | us->ep_bInterval = ep_int->bInterval; |
769 | } | |
770 | return 0; | |
771 | } | |
772 | ||
773 | /* Initialize all the dynamic resources we need */ | |
774 | static int usb_stor_acquire_resources(struct us_data *us) | |
775 | { | |
776 | int p; | |
3f13e66e | 777 | struct task_struct *th; |
1da177e4 LT |
778 | |
779 | us->current_urb = usb_alloc_urb(0, GFP_KERNEL); | |
780 | if (!us->current_urb) { | |
191648d0 | 781 | usb_stor_dbg(us, "URB allocation failed\n"); |
1da177e4 LT |
782 | return -ENOMEM; |
783 | } | |
784 | ||
1da177e4 LT |
785 | /* Just before we start our control thread, initialize |
786 | * the device if it needs initialization */ | |
b876aef7 AS |
787 | if (us->unusual_dev->initFunction) { |
788 | p = us->unusual_dev->initFunction(us); | |
789 | if (p) | |
790 | return p; | |
791 | } | |
1da177e4 LT |
792 | |
793 | /* Start up our control thread */ | |
ed76cacb | 794 | th = kthread_run(usb_stor_control_thread, us, "usb-storage"); |
3f13e66e | 795 | if (IS_ERR(th)) { |
cbd3af54 FC |
796 | dev_warn(&us->pusb_intf->dev, |
797 | "Unable to start control thread\n"); | |
3f13e66e | 798 | return PTR_ERR(th); |
1da177e4 | 799 | } |
ed76cacb | 800 | us->ctl_thread = th; |
1da177e4 LT |
801 | |
802 | return 0; | |
803 | } | |
804 | ||
805 | /* Release all our dynamic resources */ | |
806 | static void usb_stor_release_resources(struct us_data *us) | |
807 | { | |
1da177e4 | 808 | /* Tell the control thread to exit. The SCSI host must |
543f7810 AS |
809 | * already have been removed and the DISCONNECTING flag set |
810 | * so that we won't accept any more commands. | |
1da177e4 | 811 | */ |
191648d0 | 812 | usb_stor_dbg(us, "-- sending exit command to thread\n"); |
7119e3c3 | 813 | complete(&us->cmnd_ready); |
ed76cacb AS |
814 | if (us->ctl_thread) |
815 | kthread_stop(us->ctl_thread); | |
1da177e4 LT |
816 | |
817 | /* Call the destructor routine, if it exists */ | |
818 | if (us->extra_destructor) { | |
191648d0 | 819 | usb_stor_dbg(us, "-- calling extra_destructor()\n"); |
1da177e4 LT |
820 | us->extra_destructor(us->extra); |
821 | } | |
822 | ||
823 | /* Free the extra data and the URB */ | |
824 | kfree(us->extra); | |
825 | usb_free_urb(us->current_urb); | |
826 | } | |
827 | ||
828 | /* Dissociate from the USB device */ | |
829 | static void dissociate_dev(struct us_data *us) | |
830 | { | |
0ede76fc AS |
831 | /* Free the buffers */ |
832 | kfree(us->cr); | |
997ea58e | 833 | usb_free_coherent(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, us->iobuf_dma); |
1da177e4 LT |
834 | |
835 | /* Remove our private data from the interface */ | |
836 | usb_set_intfdata(us->pusb_intf, NULL); | |
837 | } | |
838 | ||
543f7810 AS |
839 | /* First stage of disconnect processing: stop SCSI scanning, |
840 | * remove the host, and stop accepting new commands | |
841 | */ | |
77f46328 MD |
842 | static void quiesce_and_remove_host(struct us_data *us) |
843 | { | |
eecd11ed AS |
844 | struct Scsi_Host *host = us_to_host(us); |
845 | ||
543f7810 | 846 | /* If the device is really gone, cut short reset delays */ |
bb94a406 | 847 | if (us->pusb_dev->state == USB_STATE_NOTATTACHED) { |
543f7810 | 848 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); |
bb94a406 AS |
849 | wake_up(&us->delay_wait); |
850 | } | |
77f46328 | 851 | |
bb94a406 AS |
852 | /* Prevent SCSI scanning (if it hasn't started yet) |
853 | * or wait for the SCSI-scanning routine to stop. | |
543f7810 | 854 | */ |
bb94a406 AS |
855 | cancel_delayed_work_sync(&us->scan_dwork); |
856 | ||
857 | /* Balance autopm calls if scanning was cancelled */ | |
858 | if (test_bit(US_FLIDX_SCAN_PENDING, &us->dflags)) | |
859 | usb_autopm_put_interface_no_suspend(us->pusb_intf); | |
26186ba7 | 860 | |
543f7810 AS |
861 | /* Removing the host will perform an orderly shutdown: caches |
862 | * synchronized, disks spun down, etc. | |
863 | */ | |
eecd11ed | 864 | scsi_remove_host(host); |
2f67cd5b | 865 | |
543f7810 AS |
866 | /* Prevent any new commands from being accepted and cut short |
867 | * reset delays. | |
868 | */ | |
869 | scsi_lock(host); | |
870 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); | |
871 | scsi_unlock(host); | |
872 | wake_up(&us->delay_wait); | |
77f46328 MD |
873 | } |
874 | ||
875 | /* Second stage of disconnect processing: deallocate all resources */ | |
876 | static void release_everything(struct us_data *us) | |
877 | { | |
878 | usb_stor_release_resources(us); | |
879 | dissociate_dev(us); | |
880 | ||
881 | /* Drop our reference to the host; the SCSI core will free it | |
882 | * (and "us" along with it) when the refcount becomes 0. */ | |
883 | scsi_host_put(us_to_host(us)); | |
884 | } | |
885 | ||
bb94a406 AS |
886 | /* Delayed-work routine to carry out SCSI-device scanning */ |
887 | static void usb_stor_scan_dwork(struct work_struct *work) | |
1da177e4 | 888 | { |
bb94a406 AS |
889 | struct us_data *us = container_of(work, struct us_data, |
890 | scan_dwork.work); | |
cbd3af54 | 891 | struct device *dev = &us->pusb_intf->dev; |
1da177e4 | 892 | |
bb94a406 | 893 | dev_dbg(dev, "starting scan\n"); |
ec012476 | 894 | |
bb94a406 | 895 | /* For bulk-only devices, determine the max LUN value */ |
646a3843 MK |
896 | if (us->protocol == USB_PR_BULK && |
897 | !(us->fflags & US_FL_SINGLE_LUN) && | |
898 | !(us->fflags & US_FL_SCM_MULT_TARG)) { | |
bb94a406 AS |
899 | mutex_lock(&us->dev_mutex); |
900 | us->max_lun = usb_stor_Bulk_max_lun(us); | |
ec371326 ON |
901 | /* |
902 | * Allow proper scanning of devices that present more than 8 LUNs | |
903 | * While not affecting other devices that may need the previous behavior | |
904 | */ | |
905 | if (us->max_lun >= 8) | |
906 | us_to_host(us)->max_lun = us->max_lun+1; | |
bb94a406 | 907 | mutex_unlock(&us->dev_mutex); |
1da177e4 | 908 | } |
bb94a406 AS |
909 | scsi_scan_host(us_to_host(us)); |
910 | dev_dbg(dev, "scan complete\n"); | |
1da177e4 | 911 | |
bb94a406 | 912 | /* Should we unbind if no devices were detected? */ |
1da177e4 | 913 | |
f283925f | 914 | usb_autopm_put_interface(us->pusb_intf); |
bb94a406 | 915 | clear_bit(US_FLIDX_SCAN_PENDING, &us->dflags); |
1da177e4 LT |
916 | } |
917 | ||
4c1bd3d7 DV |
918 | static unsigned int usb_stor_sg_tablesize(struct usb_interface *intf) |
919 | { | |
920 | struct usb_device *usb_dev = interface_to_usbdev(intf); | |
921 | ||
922 | if (usb_dev->bus->sg_tablesize) { | |
923 | return usb_dev->bus->sg_tablesize; | |
924 | } | |
925 | return SG_ALL; | |
926 | } | |
1da177e4 | 927 | |
e6e244b6 AS |
928 | /* First part of general USB mass-storage probing */ |
929 | int usb_stor_probe1(struct us_data **pus, | |
930 | struct usb_interface *intf, | |
931 | const struct usb_device_id *id, | |
aa519be3 AM |
932 | struct us_unusual_dev *unusual_dev, |
933 | struct scsi_host_template *sht) | |
1da177e4 LT |
934 | { |
935 | struct Scsi_Host *host; | |
936 | struct us_data *us; | |
1da177e4 | 937 | int result; |
a00828e9 | 938 | |
191648d0 | 939 | dev_info(&intf->dev, "USB Mass Storage device detected\n"); |
1da177e4 LT |
940 | |
941 | /* | |
942 | * Ask the SCSI layer to allocate a host structure, with extra | |
943 | * space at the end for our private us_data structure. | |
944 | */ | |
aa519be3 | 945 | host = scsi_host_alloc(sht, sizeof(*us)); |
1da177e4 | 946 | if (!host) { |
191648d0 | 947 | dev_warn(&intf->dev, "Unable to allocate the scsi host\n"); |
1da177e4 LT |
948 | return -ENOMEM; |
949 | } | |
950 | ||
17f06022 RS |
951 | /* |
952 | * Allow 16-byte CDBs and thus > 2TB | |
953 | */ | |
954 | host->max_cmd_len = 16; | |
4c1bd3d7 | 955 | host->sg_tablesize = usb_stor_sg_tablesize(intf); |
e6e244b6 | 956 | *pus = us = host_to_us(host); |
4186ecf8 | 957 | mutex_init(&(us->dev_mutex)); |
c825bab0 | 958 | us_set_lock_class(&us->dev_mutex, intf); |
7119e3c3 | 959 | init_completion(&us->cmnd_ready); |
1da177e4 LT |
960 | init_completion(&(us->notify)); |
961 | init_waitqueue_head(&us->delay_wait); | |
bb94a406 | 962 | INIT_DELAYED_WORK(&us->scan_dwork, usb_stor_scan_dwork); |
1da177e4 LT |
963 | |
964 | /* Associate the us_data structure with the USB device */ | |
965 | result = associate_dev(us, intf); | |
966 | if (result) | |
967 | goto BadDevice; | |
968 | ||
e6e244b6 AS |
969 | /* Get the unusual_devs entries and the descriptors */ |
970 | result = get_device_info(us, id, unusual_dev); | |
3c332422 DD |
971 | if (result) |
972 | goto BadDevice; | |
1da177e4 | 973 | |
e6e244b6 AS |
974 | /* Get standard transport and protocol settings */ |
975 | get_transport(us); | |
976 | get_protocol(us); | |
977 | ||
978 | /* Give the caller a chance to fill in specialized transport | |
979 | * or protocol settings. | |
980 | */ | |
981 | return 0; | |
982 | ||
983 | BadDevice: | |
191648d0 | 984 | usb_stor_dbg(us, "storage_probe() failed\n"); |
e6e244b6 AS |
985 | release_everything(us); |
986 | return result; | |
987 | } | |
988 | EXPORT_SYMBOL_GPL(usb_stor_probe1); | |
989 | ||
990 | /* Second part of general USB mass-storage probing */ | |
991 | int usb_stor_probe2(struct us_data *us) | |
992 | { | |
e6e244b6 | 993 | int result; |
cbd3af54 | 994 | struct device *dev = &us->pusb_intf->dev; |
e6e244b6 AS |
995 | |
996 | /* Make sure the transport and protocol have both been set */ | |
997 | if (!us->transport || !us->proto_handler) { | |
998 | result = -ENXIO; | |
1da177e4 | 999 | goto BadDevice; |
e6e244b6 | 1000 | } |
191648d0 JP |
1001 | usb_stor_dbg(us, "Transport: %s\n", us->transport_name); |
1002 | usb_stor_dbg(us, "Protocol: %s\n", us->protocol_name); | |
e6e244b6 | 1003 | |
646a3843 MK |
1004 | if (us->fflags & US_FL_SCM_MULT_TARG) { |
1005 | /* | |
1006 | * SCM eUSCSI bridge devices can have different numbers | |
1007 | * of LUNs on different targets; allow all to be probed. | |
1008 | */ | |
1009 | us->max_lun = 7; | |
1010 | /* The eUSCSI itself has ID 7, so avoid scanning that */ | |
1011 | us_to_host(us)->this_id = 7; | |
1012 | /* max_id is 8 initially, so no need to set it here */ | |
1013 | } else { | |
1014 | /* In the normal case there is only a single target */ | |
1015 | us_to_host(us)->max_id = 1; | |
1016 | /* | |
1017 | * Like Windows, we won't store the LUN bits in CDB[1] for | |
1018 | * SCSI-2 devices using the Bulk-Only transport (even though | |
1019 | * this violates the SCSI spec). | |
1020 | */ | |
1021 | if (us->transport == usb_stor_Bulk_transport) | |
1022 | us_to_host(us)->no_scsi2_lun_in_cdb = 1; | |
1023 | } | |
1024 | ||
e6e244b6 AS |
1025 | /* fix for single-lun devices */ |
1026 | if (us->fflags & US_FL_SINGLE_LUN) | |
1027 | us->max_lun = 0; | |
1028 | ||
1029 | /* Find the endpoints and calculate pipe values */ | |
1da177e4 LT |
1030 | result = get_pipes(us); |
1031 | if (result) | |
1032 | goto BadDevice; | |
1033 | ||
21c13a4f AS |
1034 | /* |
1035 | * If the device returns invalid data for the first READ(10) | |
1036 | * command, indicate the command should be retried. | |
1037 | */ | |
1038 | if (us->fflags & US_FL_INITIAL_READ10) | |
1039 | set_bit(US_FLIDX_REDO_READ10, &us->dflags); | |
1040 | ||
1da177e4 LT |
1041 | /* Acquire all the other resources and add the host */ |
1042 | result = usb_stor_acquire_resources(us); | |
1043 | if (result) | |
1044 | goto BadDevice; | |
00fa43ef MW |
1045 | snprintf(us->scsi_name, sizeof(us->scsi_name), "usb-storage %s", |
1046 | dev_name(&us->pusb_intf->dev)); | |
cbd3af54 | 1047 | result = scsi_add_host(us_to_host(us), dev); |
1da177e4 | 1048 | if (result) { |
cbd3af54 FC |
1049 | dev_warn(dev, |
1050 | "Unable to add the scsi host\n"); | |
1da177e4 LT |
1051 | goto BadDevice; |
1052 | } | |
1053 | ||
bb94a406 | 1054 | /* Submit the delayed_work for SCSI-device scanning */ |
f283925f | 1055 | usb_autopm_get_interface_no_resume(us->pusb_intf); |
bb94a406 | 1056 | set_bit(US_FLIDX_SCAN_PENDING, &us->dflags); |
1da177e4 | 1057 | |
bb94a406 AS |
1058 | if (delay_use > 0) |
1059 | dev_dbg(dev, "waiting for device to settle before scanning\n"); | |
1060 | queue_delayed_work(system_freezable_wq, &us->scan_dwork, | |
1061 | delay_use * HZ); | |
1da177e4 LT |
1062 | return 0; |
1063 | ||
1064 | /* We come here if there are any problems */ | |
1065 | BadDevice: | |
191648d0 | 1066 | usb_stor_dbg(us, "storage_probe() failed\n"); |
77f46328 | 1067 | release_everything(us); |
1da177e4 LT |
1068 | return result; |
1069 | } | |
e6e244b6 | 1070 | EXPORT_SYMBOL_GPL(usb_stor_probe2); |
1da177e4 | 1071 | |
e6e244b6 AS |
1072 | /* Handle a USB mass-storage disconnect */ |
1073 | void usb_stor_disconnect(struct usb_interface *intf) | |
1da177e4 LT |
1074 | { |
1075 | struct us_data *us = usb_get_intfdata(intf); | |
1076 | ||
77f46328 MD |
1077 | quiesce_and_remove_host(us); |
1078 | release_everything(us); | |
1da177e4 | 1079 | } |
e6e244b6 AS |
1080 | EXPORT_SYMBOL_GPL(usb_stor_disconnect); |
1081 | ||
aa519be3 AM |
1082 | static struct scsi_host_template usb_stor_host_template; |
1083 | ||
e6e244b6 AS |
1084 | /* The main probe routine for standard devices */ |
1085 | static int storage_probe(struct usb_interface *intf, | |
1086 | const struct usb_device_id *id) | |
1087 | { | |
fd7ff36d | 1088 | struct us_unusual_dev *unusual_dev; |
e6e244b6 AS |
1089 | struct us_data *us; |
1090 | int result; | |
fd7ff36d | 1091 | int size; |
e6e244b6 | 1092 | |
5bfd5b5d HG |
1093 | /* If uas is enabled and this device can do uas then ignore it. */ |
1094 | #if IS_ENABLED(CONFIG_USB_UAS) | |
a5011d44 | 1095 | if (uas_use_uas_driver(intf, id, NULL)) |
5bfd5b5d HG |
1096 | return -ENXIO; |
1097 | #endif | |
1098 | ||
e6e244b6 | 1099 | /* |
e6e244b6 AS |
1100 | * If the device isn't standard (is handled by a subdriver |
1101 | * module) then don't accept it. | |
1102 | */ | |
f61870ee | 1103 | if (usb_usual_ignore_device(intf)) |
e6e244b6 AS |
1104 | return -ENXIO; |
1105 | ||
1106 | /* | |
1107 | * Call the general probe procedures. | |
1108 | * | |
1109 | * The unusual_dev_list array is parallel to the usb_storage_usb_ids | |
1110 | * table, so we use the index of the id entry to find the | |
1111 | * corresponding unusual_devs entry. | |
1112 | */ | |
fd7ff36d HL |
1113 | |
1114 | size = ARRAY_SIZE(us_unusual_dev_list); | |
1115 | if (id >= usb_storage_usb_ids && id < usb_storage_usb_ids + size) { | |
1116 | unusual_dev = (id - usb_storage_usb_ids) + us_unusual_dev_list; | |
1117 | } else { | |
1118 | unusual_dev = &for_dynamic_ids; | |
1119 | ||
191648d0 | 1120 | dev_dbg(&intf->dev, "Use Bulk-Only transport with the Transparent SCSI protocol for dynamic id: 0x%04x 0x%04x\n", |
fd7ff36d HL |
1121 | id->idVendor, id->idProduct); |
1122 | } | |
1123 | ||
aa519be3 AM |
1124 | result = usb_stor_probe1(&us, intf, id, unusual_dev, |
1125 | &usb_stor_host_template); | |
e6e244b6 AS |
1126 | if (result) |
1127 | return result; | |
1128 | ||
1129 | /* No special transport or protocol settings in the main module */ | |
1130 | ||
1131 | result = usb_stor_probe2(us); | |
1132 | return result; | |
1133 | } | |
1da177e4 | 1134 | |
ce2596df | 1135 | static struct usb_driver usb_storage_driver = { |
aa519be3 | 1136 | .name = DRV_NAME, |
ce2596df | 1137 | .probe = storage_probe, |
e6e244b6 AS |
1138 | .disconnect = usb_stor_disconnect, |
1139 | .suspend = usb_stor_suspend, | |
1140 | .resume = usb_stor_resume, | |
1141 | .reset_resume = usb_stor_reset_resume, | |
1142 | .pre_reset = usb_stor_pre_reset, | |
1143 | .post_reset = usb_stor_post_reset, | |
1144 | .id_table = usb_storage_usb_ids, | |
f283925f | 1145 | .supports_autosuspend = 1, |
543f7810 | 1146 | .soft_unbind = 1, |
ce2596df AS |
1147 | }; |
1148 | ||
aa519be3 | 1149 | module_usb_stor_driver(usb_storage_driver, usb_stor_host_template, DRV_NAME); |