]>
Commit | Line | Data |
---|---|---|
5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0+ |
f0183a33 FB |
2 | /* |
3 | * Driver for USB Mass Storage compliant devices | |
1da177e4 LT |
4 | * |
5 | * Current development and maintenance by: | |
6 | * (c) 1999-2003 Matthew Dharm (mdharm-usb@one-eyed-alien.net) | |
7 | * | |
8 | * Developed with the assistance of: | |
9 | * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org) | |
e6e244b6 | 10 | * (c) 2003-2009 Alan Stern (stern@rowland.harvard.edu) |
1da177e4 LT |
11 | * |
12 | * Initial work by: | |
13 | * (c) 1999 Michael Gee (michael@linuxspecific.com) | |
14 | * | |
15 | * usb_device_id support by Adam J. Richter (adam@yggdrasil.com): | |
16 | * (c) 2000 Yggdrasil Computing, Inc. | |
17 | * | |
18 | * This driver is based on the 'USB Mass Storage Class' document. This | |
19 | * describes in detail the protocol used to communicate with such | |
20 | * devices. Clearly, the designers had SCSI and ATAPI commands in | |
21 | * mind when they created this document. The commands are all very | |
22 | * similar to commands in the SCSI-II and ATAPI specifications. | |
23 | * | |
24 | * It is important to note that in a number of cases this class | |
25 | * exhibits class-specific exemptions from the USB specification. | |
26 | * Notably the usage of NAK, STALL and ACK differs from the norm, in | |
27 | * that they are used to communicate wait, failed and OK on commands. | |
28 | * | |
29 | * Also, for certain devices, the interrupt endpoint is used to convey | |
30 | * status of a command. | |
1da177e4 LT |
31 | */ |
32 | ||
9eb66f71 MW |
33 | #ifdef CONFIG_USB_STORAGE_DEBUG |
34 | #define DEBUG | |
35 | #endif | |
36 | ||
1da177e4 LT |
37 | #include <linux/sched.h> |
38 | #include <linux/errno.h> | |
1da177e4 | 39 | #include <linux/module.h> |
1da177e4 | 40 | #include <linux/slab.h> |
3f13e66e | 41 | #include <linux/kthread.h> |
4186ecf8 | 42 | #include <linux/mutex.h> |
00f8b0c1 | 43 | #include <linux/utsname.h> |
1da177e4 LT |
44 | |
45 | #include <scsi/scsi.h> | |
46 | #include <scsi/scsi_cmnd.h> | |
47 | #include <scsi/scsi_device.h> | |
48 | ||
49 | #include "usb.h" | |
50 | #include "scsiglue.h" | |
51 | #include "transport.h" | |
52 | #include "protocol.h" | |
53 | #include "debug.h" | |
54 | #include "initializers.h" | |
55 | ||
32fe5e39 | 56 | #include "sierra_ms.h" |
281b064f | 57 | #include "option_ms.h" |
1da177e4 | 58 | |
5bfd5b5d HG |
59 | #if IS_ENABLED(CONFIG_USB_UAS) |
60 | #include "uas-detect.h" | |
61 | #endif | |
62 | ||
aa519be3 AM |
63 | #define DRV_NAME "usb-storage" |
64 | ||
1da177e4 LT |
65 | /* Some informational data */ |
66 | MODULE_AUTHOR("Matthew Dharm <mdharm-usb@one-eyed-alien.net>"); | |
67 | MODULE_DESCRIPTION("USB Mass Storage driver for Linux"); | |
68 | MODULE_LICENSE("GPL"); | |
69 | ||
a4a47bc0 | 70 | static unsigned int delay_use = 1; |
1da177e4 LT |
71 | module_param(delay_use, uint, S_IRUGO | S_IWUSR); |
72 | MODULE_PARM_DESC(delay_use, "seconds to delay before using a new device"); | |
73 | ||
c838ea46 AS |
74 | static char quirks[128]; |
75 | module_param_string(quirks, quirks, sizeof(quirks), S_IRUGO | S_IWUSR); | |
d4f373e5 AS |
76 | MODULE_PARM_DESC(quirks, "supplemental list of device IDs and their quirks"); |
77 | ||
1da177e4 | 78 | |
a00828e9 PZ |
79 | /* |
80 | * The entries in this table correspond, line for line, | |
e6e244b6 | 81 | * with the entries in usb_storage_usb_ids[], defined in usual-tables.c. |
1da177e4 | 82 | */ |
1da177e4 | 83 | |
f0183a33 FB |
84 | /* |
85 | *The vendor name should be kept at eight characters or less, and | |
1da177e4 LT |
86 | * the product name should be kept at 16 characters or less. If a device |
87 | * has the US_FL_FIX_INQUIRY flag, then the vendor and product names | |
a6cd244b | 88 | * normally generated by a device through the INQUIRY response will be |
1da177e4 LT |
89 | * taken from this list, and this is the reason for the above size |
90 | * restriction. However, if the flag is not present, then you | |
91 | * are free to use as many characters as you like. | |
92 | */ | |
93 | ||
1da177e4 LT |
94 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ |
95 | vendor_name, product_name, use_protocol, use_transport, \ | |
96 | init_function, Flags) \ | |
97 | { \ | |
98 | .vendorName = vendor_name, \ | |
99 | .productName = product_name, \ | |
100 | .useProtocol = use_protocol, \ | |
101 | .useTransport = use_transport, \ | |
102 | .initFunction = init_function, \ | |
a00828e9 PZ |
103 | } |
104 | ||
25ff1c31 AS |
105 | #define COMPLIANT_DEV UNUSUAL_DEV |
106 | ||
f61870ee | 107 | #define USUAL_DEV(use_protocol, use_transport) \ |
a00828e9 PZ |
108 | { \ |
109 | .useProtocol = use_protocol, \ | |
110 | .useTransport = use_transport, \ | |
1da177e4 LT |
111 | } |
112 | ||
07c7be3d | 113 | #define UNUSUAL_VENDOR_INTF(idVendor, cl, sc, pr, \ |
114 | vendor_name, product_name, use_protocol, use_transport, \ | |
115 | init_function, Flags) \ | |
116 | { \ | |
117 | .vendorName = vendor_name, \ | |
118 | .productName = product_name, \ | |
119 | .useProtocol = use_protocol, \ | |
120 | .useTransport = use_transport, \ | |
121 | .initFunction = init_function, \ | |
122 | } | |
123 | ||
10892847 | 124 | static const struct us_unusual_dev us_unusual_dev_list[] = { |
a1631062 | 125 | # include "unusual_devs.h" |
e6e244b6 | 126 | { } /* Terminating entry */ |
1da177e4 LT |
127 | }; |
128 | ||
10892847 | 129 | static const struct us_unusual_dev for_dynamic_ids = |
f61870ee | 130 | USUAL_DEV(USB_SC_SCSI, USB_PR_BULK); |
fd7ff36d | 131 | |
e6e244b6 AS |
132 | #undef UNUSUAL_DEV |
133 | #undef COMPLIANT_DEV | |
134 | #undef USUAL_DEV | |
07c7be3d | 135 | #undef UNUSUAL_VENDOR_INTF |
e6e244b6 | 136 | |
c825bab0 ML |
137 | #ifdef CONFIG_LOCKDEP |
138 | ||
139 | static struct lock_class_key us_interface_key[USB_MAXINTERFACES]; | |
140 | ||
141 | static void us_set_lock_class(struct mutex *mutex, | |
142 | struct usb_interface *intf) | |
143 | { | |
144 | struct usb_device *udev = interface_to_usbdev(intf); | |
145 | struct usb_host_config *config = udev->actconfig; | |
146 | int i; | |
147 | ||
148 | for (i = 0; i < config->desc.bNumInterfaces; i++) { | |
149 | if (config->interface[i] == intf) | |
150 | break; | |
151 | } | |
152 | ||
153 | BUG_ON(i == config->desc.bNumInterfaces); | |
154 | ||
155 | lockdep_set_class(mutex, &us_interface_key[i]); | |
156 | } | |
157 | ||
158 | #else | |
159 | ||
160 | static void us_set_lock_class(struct mutex *mutex, | |
161 | struct usb_interface *intf) | |
162 | { | |
163 | } | |
164 | ||
165 | #endif | |
ce2596df AS |
166 | |
167 | #ifdef CONFIG_PM /* Minimal support for suspend and resume */ | |
168 | ||
e6e244b6 | 169 | int usb_stor_suspend(struct usb_interface *iface, pm_message_t message) |
ce2596df AS |
170 | { |
171 | struct us_data *us = usb_get_intfdata(iface); | |
172 | ||
173 | /* Wait until no command is running */ | |
4186ecf8 | 174 | mutex_lock(&us->dev_mutex); |
ce2596df | 175 | |
7931e1c6 MD |
176 | if (us->suspend_resume_hook) |
177 | (us->suspend_resume_hook)(us, US_SUSPEND); | |
ce2596df | 178 | |
f0183a33 FB |
179 | /* |
180 | * When runtime PM is working, we'll set a flag to indicate | |
181 | * whether we should autoresume when a SCSI request arrives. | |
182 | */ | |
d526875d | 183 | |
4186ecf8 | 184 | mutex_unlock(&us->dev_mutex); |
ce2596df AS |
185 | return 0; |
186 | } | |
e6e244b6 | 187 | EXPORT_SYMBOL_GPL(usb_stor_suspend); |
ce2596df | 188 | |
e6e244b6 | 189 | int usb_stor_resume(struct usb_interface *iface) |
ce2596df AS |
190 | { |
191 | struct us_data *us = usb_get_intfdata(iface); | |
192 | ||
d526875d | 193 | mutex_lock(&us->dev_mutex); |
8dfe4b14 | 194 | |
7931e1c6 MD |
195 | if (us->suspend_resume_hook) |
196 | (us->suspend_resume_hook)(us, US_RESUME); | |
ce2596df | 197 | |
d526875d | 198 | mutex_unlock(&us->dev_mutex); |
ce2596df AS |
199 | return 0; |
200 | } | |
e6e244b6 | 201 | EXPORT_SYMBOL_GPL(usb_stor_resume); |
ce2596df | 202 | |
e6e244b6 | 203 | int usb_stor_reset_resume(struct usb_interface *iface) |
f07600cf AS |
204 | { |
205 | struct us_data *us = usb_get_intfdata(iface); | |
206 | ||
f07600cf AS |
207 | /* Report the reset to the SCSI core */ |
208 | usb_stor_report_bus_reset(us); | |
209 | ||
f0183a33 | 210 | /* |
52eccd23 MZ |
211 | * If any of the subdrivers implemented a reinitialization scheme, |
212 | * this is where the callback would be invoked. | |
f0183a33 | 213 | */ |
f07600cf AS |
214 | return 0; |
215 | } | |
e6e244b6 | 216 | EXPORT_SYMBOL_GPL(usb_stor_reset_resume); |
f07600cf | 217 | |
ce2596df | 218 | #endif /* CONFIG_PM */ |
1da177e4 | 219 | |
47104b0d AS |
220 | /* |
221 | * The next two routines get called just before and just after | |
222 | * a USB port reset, whether from this driver or a different one. | |
223 | */ | |
224 | ||
e6e244b6 | 225 | int usb_stor_pre_reset(struct usb_interface *iface) |
47104b0d AS |
226 | { |
227 | struct us_data *us = usb_get_intfdata(iface); | |
228 | ||
47104b0d AS |
229 | /* Make sure no command runs during the reset */ |
230 | mutex_lock(&us->dev_mutex); | |
f07600cf | 231 | return 0; |
47104b0d | 232 | } |
e6e244b6 | 233 | EXPORT_SYMBOL_GPL(usb_stor_pre_reset); |
47104b0d | 234 | |
e6e244b6 | 235 | int usb_stor_post_reset(struct usb_interface *iface) |
47104b0d AS |
236 | { |
237 | struct us_data *us = usb_get_intfdata(iface); | |
238 | ||
47104b0d | 239 | /* Report the reset to the SCSI core */ |
47104b0d | 240 | usb_stor_report_bus_reset(us); |
47104b0d | 241 | |
f0183a33 | 242 | /* |
52eccd23 MZ |
243 | * If any of the subdrivers implemented a reinitialization scheme, |
244 | * this is where the callback would be invoked. | |
f0183a33 | 245 | */ |
0458d5b4 | 246 | |
f07600cf AS |
247 | mutex_unlock(&us->dev_mutex); |
248 | return 0; | |
47104b0d | 249 | } |
e6e244b6 | 250 | EXPORT_SYMBOL_GPL(usb_stor_post_reset); |
47104b0d | 251 | |
1da177e4 LT |
252 | /* |
253 | * fill_inquiry_response takes an unsigned char array (which must | |
254 | * be at least 36 characters) and populates the vendor name, | |
255 | * product name, and revision fields. Then the array is copied | |
256 | * into the SCSI command's response buffer (oddly enough | |
257 | * called request_buffer). data_len contains the length of the | |
258 | * data array, which again must be at least 36. | |
259 | */ | |
260 | ||
261 | void fill_inquiry_response(struct us_data *us, unsigned char *data, | |
262 | unsigned int data_len) | |
263 | { | |
a1631062 | 264 | if (data_len < 36) /* You lose. */ |
1da177e4 LT |
265 | return; |
266 | ||
f3f6faa9 | 267 | memset(data+8, ' ', 28); |
f0183a33 FB |
268 | if (data[0]&0x20) { /* |
269 | * USB device currently not connected. Return | |
270 | * peripheral qualifier 001b ("...however, the | |
271 | * physical device is not currently connected | |
272 | * to this logical unit") and leave vendor and | |
273 | * product identification empty. ("If the target | |
274 | * does store some of the INQUIRY data on the | |
275 | * device, it may return zeros or ASCII spaces | |
276 | * (20h) in those fields until the data is | |
277 | * available from the device."). | |
278 | */ | |
1da177e4 LT |
279 | } else { |
280 | u16 bcdDevice = le16_to_cpu(us->pusb_dev->descriptor.bcdDevice); | |
f3f6faa9 AS |
281 | int n; |
282 | ||
283 | n = strlen(us->unusual_dev->vendorName); | |
284 | memcpy(data+8, us->unusual_dev->vendorName, min(8, n)); | |
285 | n = strlen(us->unusual_dev->productName); | |
286 | memcpy(data+16, us->unusual_dev->productName, min(16, n)); | |
287 | ||
1da177e4 LT |
288 | data[32] = 0x30 + ((bcdDevice>>12) & 0x0F); |
289 | data[33] = 0x30 + ((bcdDevice>>8) & 0x0F); | |
290 | data[34] = 0x30 + ((bcdDevice>>4) & 0x0F); | |
291 | data[35] = 0x30 + ((bcdDevice) & 0x0F); | |
292 | } | |
293 | ||
294 | usb_stor_set_xfer_buf(data, data_len, us->srb); | |
295 | } | |
e6e244b6 | 296 | EXPORT_SYMBOL_GPL(fill_inquiry_response); |
1da177e4 LT |
297 | |
298 | static int usb_stor_control_thread(void * __us) | |
299 | { | |
300 | struct us_data *us = (struct us_data *)__us; | |
301 | struct Scsi_Host *host = us_to_host(us); | |
8b52291a | 302 | struct scsi_cmnd *srb; |
1da177e4 | 303 | |
db2c8624 | 304 | for (;;) { |
191648d0 | 305 | usb_stor_dbg(us, "*** thread sleeping\n"); |
7119e3c3 | 306 | if (wait_for_completion_interruptible(&us->cmnd_ready)) |
1da177e4 | 307 | break; |
7119e3c3 | 308 | |
191648d0 | 309 | usb_stor_dbg(us, "*** thread awakened\n"); |
1da177e4 LT |
310 | |
311 | /* lock the device pointers */ | |
4186ecf8 | 312 | mutex_lock(&(us->dev_mutex)); |
1da177e4 | 313 | |
543f7810 AS |
314 | /* lock access to the state */ |
315 | scsi_lock(host); | |
316 | ||
317 | /* When we are called with no command pending, we're done */ | |
8b52291a | 318 | srb = us->srb; |
32bf9fd5 | 319 | if (srb == NULL) { |
543f7810 | 320 | scsi_unlock(host); |
4186ecf8 | 321 | mutex_unlock(&us->dev_mutex); |
191648d0 | 322 | usb_stor_dbg(us, "-- exiting\n"); |
1da177e4 LT |
323 | break; |
324 | } | |
325 | ||
1da177e4 | 326 | /* has the command timed out *already* ? */ |
7e4d6c38 | 327 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { |
32bf9fd5 | 328 | srb->result = DID_ABORT << 16; |
1da177e4 LT |
329 | goto SkipForAbort; |
330 | } | |
331 | ||
332 | scsi_unlock(host); | |
333 | ||
f0183a33 FB |
334 | /* |
335 | * reject the command if the direction indicator | |
1da177e4 LT |
336 | * is UNKNOWN |
337 | */ | |
32bf9fd5 | 338 | if (srb->sc_data_direction == DMA_BIDIRECTIONAL) { |
191648d0 | 339 | usb_stor_dbg(us, "UNKNOWN data direction\n"); |
32bf9fd5 | 340 | srb->result = DID_ERROR << 16; |
1da177e4 LT |
341 | } |
342 | ||
f0183a33 FB |
343 | /* |
344 | * reject if target != 0 or if LUN is higher than | |
1da177e4 LT |
345 | * the maximum known LUN |
346 | */ | |
32bf9fd5 | 347 | else if (srb->device->id && |
7e4d6c38 | 348 | !(us->fflags & US_FL_SCM_MULT_TARG)) { |
9cb78c16 | 349 | usb_stor_dbg(us, "Bad target number (%d:%llu)\n", |
32bf9fd5 AS |
350 | srb->device->id, |
351 | srb->device->lun); | |
352 | srb->result = DID_BAD_TARGET << 16; | |
1da177e4 LT |
353 | } |
354 | ||
32bf9fd5 | 355 | else if (srb->device->lun > us->max_lun) { |
9cb78c16 | 356 | usb_stor_dbg(us, "Bad LUN (%d:%llu)\n", |
32bf9fd5 AS |
357 | srb->device->id, |
358 | srb->device->lun); | |
359 | srb->result = DID_BAD_TARGET << 16; | |
1da177e4 LT |
360 | } |
361 | ||
f0183a33 FB |
362 | /* |
363 | * Handle those devices which need us to fake | |
364 | * their inquiry data | |
365 | */ | |
32bf9fd5 | 366 | else if ((srb->cmnd[0] == INQUIRY) && |
7e4d6c38 | 367 | (us->fflags & US_FL_FIX_INQUIRY)) { |
1da177e4 LT |
368 | unsigned char data_ptr[36] = { |
369 | 0x00, 0x80, 0x02, 0x02, | |
370 | 0x1F, 0x00, 0x00, 0x00}; | |
371 | ||
191648d0 | 372 | usb_stor_dbg(us, "Faking INQUIRY command\n"); |
1da177e4 | 373 | fill_inquiry_response(us, data_ptr, 36); |
32bf9fd5 | 374 | srb->result = SAM_STAT_GOOD; |
1da177e4 LT |
375 | } |
376 | ||
377 | /* we've got a command, let's do it! */ | |
378 | else { | |
32bf9fd5 AS |
379 | US_DEBUG(usb_stor_show_command(us, srb)); |
380 | us->proto_handler(srb, us); | |
f283925f | 381 | usb_mark_last_busy(us->pusb_dev); |
1da177e4 LT |
382 | } |
383 | ||
384 | /* lock access to the state */ | |
385 | scsi_lock(host); | |
386 | ||
8b52291a | 387 | /* was the command aborted? */ |
32bf9fd5 | 388 | if (srb->result == DID_ABORT << 16) { |
1da177e4 | 389 | SkipForAbort: |
191648d0 | 390 | usb_stor_dbg(us, "scsi command aborted\n"); |
8b52291a | 391 | srb = NULL; /* Don't call srb->scsi_done() */ |
1da177e4 LT |
392 | } |
393 | ||
f0183a33 FB |
394 | /* |
395 | * If an abort request was received we need to signal that | |
1da177e4 LT |
396 | * the abort has finished. The proper test for this is |
397 | * the TIMED_OUT flag, not srb->result == DID_ABORT, because | |
226173ed | 398 | * the timeout might have occurred after the command had |
f0183a33 FB |
399 | * already completed with a different result code. |
400 | */ | |
7e4d6c38 | 401 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { |
1da177e4 LT |
402 | complete(&(us->notify)); |
403 | ||
226173ed | 404 | /* Allow USB transfers to resume */ |
7e4d6c38 AS |
405 | clear_bit(US_FLIDX_ABORTING, &us->dflags); |
406 | clear_bit(US_FLIDX_TIMED_OUT, &us->dflags); | |
226173ed MD |
407 | } |
408 | ||
1da177e4 LT |
409 | /* finished working on this command */ |
410 | us->srb = NULL; | |
411 | scsi_unlock(host); | |
412 | ||
413 | /* unlock the device pointers */ | |
4186ecf8 | 414 | mutex_unlock(&us->dev_mutex); |
8b52291a AS |
415 | |
416 | /* now that the locks are released, notify the SCSI core */ | |
417 | if (srb) { | |
418 | usb_stor_dbg(us, "scsi cmd done, result=0x%x\n", | |
419 | srb->result); | |
420 | srb->scsi_done(srb); | |
421 | } | |
1da177e4 LT |
422 | } /* for (;;) */ |
423 | ||
ed76cacb AS |
424 | /* Wait until we are told to stop */ |
425 | for (;;) { | |
426 | set_current_state(TASK_INTERRUPTIBLE); | |
427 | if (kthread_should_stop()) | |
428 | break; | |
429 | schedule(); | |
430 | } | |
431 | __set_current_state(TASK_RUNNING); | |
432 | return 0; | |
a1631062 | 433 | } |
1da177e4 LT |
434 | |
435 | /*********************************************************************** | |
436 | * Device probing and disconnecting | |
437 | ***********************************************************************/ | |
438 | ||
439 | /* Associate our private data with the USB device */ | |
440 | static int associate_dev(struct us_data *us, struct usb_interface *intf) | |
441 | { | |
1da177e4 LT |
442 | /* Fill in the device-related fields */ |
443 | us->pusb_dev = interface_to_usbdev(intf); | |
444 | us->pusb_intf = intf; | |
445 | us->ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
191648d0 JP |
446 | usb_stor_dbg(us, "Vendor: 0x%04x, Product: 0x%04x, Revision: 0x%04x\n", |
447 | le16_to_cpu(us->pusb_dev->descriptor.idVendor), | |
448 | le16_to_cpu(us->pusb_dev->descriptor.idProduct), | |
449 | le16_to_cpu(us->pusb_dev->descriptor.bcdDevice)); | |
450 | usb_stor_dbg(us, "Interface Subclass: 0x%02x, Protocol: 0x%02x\n", | |
451 | intf->cur_altsetting->desc.bInterfaceSubClass, | |
452 | intf->cur_altsetting->desc.bInterfaceProtocol); | |
1da177e4 LT |
453 | |
454 | /* Store our private data in the interface */ | |
455 | usb_set_intfdata(intf, us); | |
456 | ||
0ede76fc AS |
457 | /* Allocate the control/setup and DMA-mapped buffers */ |
458 | us->cr = kmalloc(sizeof(*us->cr), GFP_KERNEL); | |
191648d0 | 459 | if (!us->cr) |
1da177e4 | 460 | return -ENOMEM; |
1da177e4 | 461 | |
997ea58e | 462 | us->iobuf = usb_alloc_coherent(us->pusb_dev, US_IOBUF_SIZE, |
1da177e4 LT |
463 | GFP_KERNEL, &us->iobuf_dma); |
464 | if (!us->iobuf) { | |
191648d0 | 465 | usb_stor_dbg(us, "I/O buffer allocation failed\n"); |
1da177e4 LT |
466 | return -ENOMEM; |
467 | } | |
468 | return 0; | |
469 | } | |
470 | ||
c838ea46 AS |
471 | /* Works only for digits and letters, but small and fast */ |
472 | #define TOLOWER(x) ((x) | 0x20) | |
473 | ||
d4f373e5 | 474 | /* Adjust device flags based on the "quirks=" module parameter */ |
d24d481b | 475 | void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags) |
d4f373e5 | 476 | { |
c838ea46 | 477 | char *p; |
d24d481b HG |
478 | u16 vid = le16_to_cpu(udev->descriptor.idVendor); |
479 | u16 pid = le16_to_cpu(udev->descriptor.idProduct); | |
c838ea46 | 480 | unsigned f = 0; |
a91b593e | 481 | unsigned int mask = (US_FL_SANE_SENSE | US_FL_BAD_SENSE | |
d24d481b | 482 | US_FL_FIX_CAPACITY | US_FL_IGNORE_UAS | |
c838ea46 | 483 | US_FL_CAPACITY_HEURISTICS | US_FL_IGNORE_DEVICE | |
d4f373e5 | 484 | US_FL_NOT_LOCKABLE | US_FL_MAX_SECTORS_64 | |
c838ea46 | 485 | US_FL_CAPACITY_OK | US_FL_IGNORE_RESIDUE | |
5116901d | 486 | US_FL_SINGLE_LUN | US_FL_NO_WP_DETECT | |
21c13a4f | 487 | US_FL_NO_READ_DISC_INFO | US_FL_NO_READ_CAPACITY_16 | |
59307852 | 488 | US_FL_INITIAL_READ10 | US_FL_WRITE_CACHE | |
ee136af4 | 489 | US_FL_NO_ATA_1X | US_FL_NO_REPORT_OPCODES | |
050bc4e8 ON |
490 | US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS | |
491 | US_FL_ALWAYS_SYNC); | |
c838ea46 AS |
492 | |
493 | p = quirks; | |
494 | while (*p) { | |
495 | /* Each entry consists of VID:PID:flags */ | |
496 | if (vid == simple_strtoul(p, &p, 16) && | |
497 | *p == ':' && | |
498 | pid == simple_strtoul(p+1, &p, 16) && | |
499 | *p == ':') | |
d4f373e5 | 500 | break; |
c838ea46 AS |
501 | |
502 | /* Move forward to the next entry */ | |
503 | while (*p) { | |
504 | if (*p++ == ',') | |
505 | break; | |
d4f373e5 AS |
506 | } |
507 | } | |
c838ea46 AS |
508 | if (!*p) /* No match */ |
509 | return; | |
510 | ||
511 | /* Collect the flags */ | |
512 | while (*++p && *p != ',') { | |
513 | switch (TOLOWER(*p)) { | |
514 | case 'a': | |
515 | f |= US_FL_SANE_SENSE; | |
516 | break; | |
a0bb1081 AS |
517 | case 'b': |
518 | f |= US_FL_BAD_SENSE; | |
519 | break; | |
c838ea46 AS |
520 | case 'c': |
521 | f |= US_FL_FIX_CAPACITY; | |
522 | break; | |
5116901d KR |
523 | case 'd': |
524 | f |= US_FL_NO_READ_DISC_INFO; | |
525 | break; | |
526 | case 'e': | |
527 | f |= US_FL_NO_READ_CAPACITY_16; | |
528 | break; | |
734016b0 HG |
529 | case 'f': |
530 | f |= US_FL_NO_REPORT_OPCODES; | |
531 | break; | |
ee136af4 HG |
532 | case 'g': |
533 | f |= US_FL_MAX_SECTORS_240; | |
534 | break; | |
c838ea46 AS |
535 | case 'h': |
536 | f |= US_FL_CAPACITY_HEURISTICS; | |
537 | break; | |
538 | case 'i': | |
539 | f |= US_FL_IGNORE_DEVICE; | |
540 | break; | |
13630746 HG |
541 | case 'j': |
542 | f |= US_FL_NO_REPORT_LUNS; | |
543 | break; | |
8010622c ON |
544 | case 'k': |
545 | f |= US_FL_NO_SAME; | |
546 | break; | |
c838ea46 AS |
547 | case 'l': |
548 | f |= US_FL_NOT_LOCKABLE; | |
549 | break; | |
550 | case 'm': | |
551 | f |= US_FL_MAX_SECTORS_64; | |
552 | break; | |
21c13a4f AS |
553 | case 'n': |
554 | f |= US_FL_INITIAL_READ10; | |
555 | break; | |
c838ea46 AS |
556 | case 'o': |
557 | f |= US_FL_CAPACITY_OK; | |
558 | break; | |
eaa05dfc NJ |
559 | case 'p': |
560 | f |= US_FL_WRITE_CACHE; | |
561 | break; | |
c838ea46 AS |
562 | case 'r': |
563 | f |= US_FL_IGNORE_RESIDUE; | |
564 | break; | |
565 | case 's': | |
566 | f |= US_FL_SINGLE_LUN; | |
567 | break; | |
59307852 HG |
568 | case 't': |
569 | f |= US_FL_NO_ATA_1X; | |
570 | break; | |
d24d481b HG |
571 | case 'u': |
572 | f |= US_FL_IGNORE_UAS; | |
573 | break; | |
c838ea46 AS |
574 | case 'w': |
575 | f |= US_FL_NO_WP_DETECT; | |
576 | break; | |
050bc4e8 ON |
577 | case 'y': |
578 | f |= US_FL_ALWAYS_SYNC; | |
579 | break; | |
c838ea46 AS |
580 | /* Ignore unrecognized flag characters */ |
581 | } | |
582 | } | |
d24d481b | 583 | *fflags = (*fflags & ~mask) | f; |
d4f373e5 | 584 | } |
d24d481b | 585 | EXPORT_SYMBOL_GPL(usb_stor_adjust_quirks); |
d4f373e5 | 586 | |
1da177e4 | 587 | /* Get the unusual_devs entries and the string descriptors */ |
e6e244b6 | 588 | static int get_device_info(struct us_data *us, const struct usb_device_id *id, |
10892847 | 589 | const struct us_unusual_dev *unusual_dev) |
1da177e4 LT |
590 | { |
591 | struct usb_device *dev = us->pusb_dev; | |
592 | struct usb_interface_descriptor *idesc = | |
593 | &us->pusb_intf->cur_altsetting->desc; | |
cbd3af54 | 594 | struct device *pdev = &us->pusb_intf->dev; |
1da177e4 LT |
595 | |
596 | /* Store the entries */ | |
597 | us->unusual_dev = unusual_dev; | |
8fa7fd74 | 598 | us->subclass = (unusual_dev->useProtocol == USB_SC_DEVICE) ? |
1da177e4 LT |
599 | idesc->bInterfaceSubClass : |
600 | unusual_dev->useProtocol; | |
8fa7fd74 | 601 | us->protocol = (unusual_dev->useTransport == USB_PR_DEVICE) ? |
1da177e4 LT |
602 | idesc->bInterfaceProtocol : |
603 | unusual_dev->useTransport; | |
f61870ee | 604 | us->fflags = id->driver_info; |
d24d481b | 605 | usb_stor_adjust_quirks(us->pusb_dev, &us->fflags); |
1da177e4 | 606 | |
7e4d6c38 | 607 | if (us->fflags & US_FL_IGNORE_DEVICE) { |
cbd3af54 | 608 | dev_info(pdev, "device ignored\n"); |
3c332422 DD |
609 | return -ENODEV; |
610 | } | |
611 | ||
1da177e4 LT |
612 | /* |
613 | * This flag is only needed when we're in high-speed, so let's | |
614 | * disable it if we're in full-speed | |
615 | */ | |
616 | if (dev->speed != USB_SPEED_HIGH) | |
7e4d6c38 | 617 | us->fflags &= ~US_FL_GO_SLOW; |
1da177e4 | 618 | |
39f2f080 FC |
619 | if (us->fflags) |
620 | dev_info(pdev, "Quirks match for vid %04x pid %04x: %lx\n", | |
621 | le16_to_cpu(dev->descriptor.idVendor), | |
622 | le16_to_cpu(dev->descriptor.idProduct), | |
623 | us->fflags); | |
624 | ||
f0183a33 FB |
625 | /* |
626 | * Log a message if a non-generic unusual_dev entry contains an | |
1da177e4 LT |
627 | * unnecessary subclass or protocol override. This may stimulate |
628 | * reports from users that will help us remove unneeded entries | |
629 | * from the unusual_devs.h table. | |
630 | */ | |
631 | if (id->idVendor || id->idProduct) { | |
4c4c9432 | 632 | static const char *msgs[3] = { |
1da177e4 LT |
633 | "an unneeded SubClass entry", |
634 | "an unneeded Protocol entry", | |
635 | "unneeded SubClass and Protocol entries"}; | |
636 | struct usb_device_descriptor *ddesc = &dev->descriptor; | |
637 | int msg = -1; | |
638 | ||
8fa7fd74 | 639 | if (unusual_dev->useProtocol != USB_SC_DEVICE && |
1da177e4 LT |
640 | us->subclass == idesc->bInterfaceSubClass) |
641 | msg += 1; | |
8fa7fd74 | 642 | if (unusual_dev->useTransport != USB_PR_DEVICE && |
1da177e4 LT |
643 | us->protocol == idesc->bInterfaceProtocol) |
644 | msg += 2; | |
7e4d6c38 | 645 | if (msg >= 0 && !(us->fflags & US_FL_NEED_OVERRIDE)) |
cbd3af54 FC |
646 | dev_notice(pdev, "This device " |
647 | "(%04x,%04x,%04x S %02x P %02x)" | |
648 | " has %s in unusual_devs.h (kernel" | |
649 | " %s)\n" | |
650 | " Please send a copy of this message to " | |
651 | "<linux-usb@vger.kernel.org> and " | |
652 | "<usb-storage@lists.one-eyed-alien.net>\n", | |
653 | le16_to_cpu(ddesc->idVendor), | |
654 | le16_to_cpu(ddesc->idProduct), | |
655 | le16_to_cpu(ddesc->bcdDevice), | |
656 | idesc->bInterfaceSubClass, | |
657 | idesc->bInterfaceProtocol, | |
658 | msgs[msg], | |
659 | utsname()->release); | |
1da177e4 | 660 | } |
3c332422 DD |
661 | |
662 | return 0; | |
1da177e4 LT |
663 | } |
664 | ||
665 | /* Get the transport settings */ | |
e6e244b6 | 666 | static void get_transport(struct us_data *us) |
1da177e4 LT |
667 | { |
668 | switch (us->protocol) { | |
8fa7fd74 | 669 | case USB_PR_CB: |
1da177e4 LT |
670 | us->transport_name = "Control/Bulk"; |
671 | us->transport = usb_stor_CB_transport; | |
672 | us->transport_reset = usb_stor_CB_reset; | |
673 | us->max_lun = 7; | |
674 | break; | |
675 | ||
8fa7fd74 | 676 | case USB_PR_CBI: |
1da177e4 | 677 | us->transport_name = "Control/Bulk/Interrupt"; |
64648a9d | 678 | us->transport = usb_stor_CB_transport; |
1da177e4 LT |
679 | us->transport_reset = usb_stor_CB_reset; |
680 | us->max_lun = 7; | |
681 | break; | |
682 | ||
8fa7fd74 | 683 | case USB_PR_BULK: |
1da177e4 LT |
684 | us->transport_name = "Bulk"; |
685 | us->transport = usb_stor_Bulk_transport; | |
686 | us->transport_reset = usb_stor_Bulk_reset; | |
687 | break; | |
1da177e4 | 688 | } |
1da177e4 LT |
689 | } |
690 | ||
691 | /* Get the protocol settings */ | |
e6e244b6 | 692 | static void get_protocol(struct us_data *us) |
1da177e4 LT |
693 | { |
694 | switch (us->subclass) { | |
8fa7fd74 | 695 | case USB_SC_RBC: |
1da177e4 LT |
696 | us->protocol_name = "Reduced Block Commands (RBC)"; |
697 | us->proto_handler = usb_stor_transparent_scsi_command; | |
698 | break; | |
699 | ||
8fa7fd74 | 700 | case USB_SC_8020: |
1da177e4 | 701 | us->protocol_name = "8020i"; |
3dae5345 | 702 | us->proto_handler = usb_stor_pad12_command; |
1da177e4 LT |
703 | us->max_lun = 0; |
704 | break; | |
705 | ||
8fa7fd74 | 706 | case USB_SC_QIC: |
1da177e4 | 707 | us->protocol_name = "QIC-157"; |
3dae5345 | 708 | us->proto_handler = usb_stor_pad12_command; |
1da177e4 LT |
709 | us->max_lun = 0; |
710 | break; | |
711 | ||
8fa7fd74 | 712 | case USB_SC_8070: |
1da177e4 | 713 | us->protocol_name = "8070i"; |
3dae5345 | 714 | us->proto_handler = usb_stor_pad12_command; |
1da177e4 LT |
715 | us->max_lun = 0; |
716 | break; | |
717 | ||
8fa7fd74 | 718 | case USB_SC_SCSI: |
1da177e4 LT |
719 | us->protocol_name = "Transparent SCSI"; |
720 | us->proto_handler = usb_stor_transparent_scsi_command; | |
721 | break; | |
722 | ||
8fa7fd74 | 723 | case USB_SC_UFI: |
1da177e4 LT |
724 | us->protocol_name = "Uniform Floppy Interface (UFI)"; |
725 | us->proto_handler = usb_stor_ufi_command; | |
726 | break; | |
1da177e4 | 727 | } |
1da177e4 LT |
728 | } |
729 | ||
730 | /* Get the pipe settings */ | |
731 | static int get_pipes(struct us_data *us) | |
732 | { | |
80070a40 JH |
733 | struct usb_host_interface *alt = us->pusb_intf->cur_altsetting; |
734 | struct usb_endpoint_descriptor *ep_in; | |
735 | struct usb_endpoint_descriptor *ep_out; | |
736 | struct usb_endpoint_descriptor *ep_int; | |
737 | int res; | |
1da177e4 LT |
738 | |
739 | /* | |
1096f780 | 740 | * Find the first endpoint of each type we need. |
1da177e4 | 741 | * We are expecting a minimum of 2 endpoints - in and out (bulk). |
1096f780 | 742 | * An optional interrupt-in is OK (necessary for CBI protocol). |
1da177e4 LT |
743 | * We will ignore any others. |
744 | */ | |
80070a40 JH |
745 | res = usb_find_common_endpoints(alt, &ep_in, &ep_out, NULL, NULL); |
746 | if (res) { | |
747 | usb_stor_dbg(us, "bulk endpoints not found\n"); | |
748 | return res; | |
1da177e4 LT |
749 | } |
750 | ||
80070a40 JH |
751 | res = usb_find_int_in_endpoint(alt, &ep_int); |
752 | if (res && us->protocol == USB_PR_CBI) { | |
753 | usb_stor_dbg(us, "interrupt endpoint not found\n"); | |
754 | return res; | |
1da177e4 LT |
755 | } |
756 | ||
757 | /* Calculate and store the pipe values */ | |
758 | us->send_ctrl_pipe = usb_sndctrlpipe(us->pusb_dev, 0); | |
759 | us->recv_ctrl_pipe = usb_rcvctrlpipe(us->pusb_dev, 0); | |
760 | us->send_bulk_pipe = usb_sndbulkpipe(us->pusb_dev, | |
2e0fe709 | 761 | usb_endpoint_num(ep_out)); |
a1631062 | 762 | us->recv_bulk_pipe = usb_rcvbulkpipe(us->pusb_dev, |
2e0fe709 | 763 | usb_endpoint_num(ep_in)); |
1da177e4 LT |
764 | if (ep_int) { |
765 | us->recv_intr_pipe = usb_rcvintpipe(us->pusb_dev, | |
2e0fe709 | 766 | usb_endpoint_num(ep_int)); |
1da177e4 LT |
767 | us->ep_bInterval = ep_int->bInterval; |
768 | } | |
769 | return 0; | |
770 | } | |
771 | ||
772 | /* Initialize all the dynamic resources we need */ | |
773 | static int usb_stor_acquire_resources(struct us_data *us) | |
774 | { | |
775 | int p; | |
3f13e66e | 776 | struct task_struct *th; |
1da177e4 LT |
777 | |
778 | us->current_urb = usb_alloc_urb(0, GFP_KERNEL); | |
792f94f5 | 779 | if (!us->current_urb) |
1da177e4 | 780 | return -ENOMEM; |
1da177e4 | 781 | |
f0183a33 FB |
782 | /* |
783 | * Just before we start our control thread, initialize | |
784 | * the device if it needs initialization | |
785 | */ | |
b876aef7 AS |
786 | if (us->unusual_dev->initFunction) { |
787 | p = us->unusual_dev->initFunction(us); | |
788 | if (p) | |
789 | return p; | |
790 | } | |
1da177e4 LT |
791 | |
792 | /* Start up our control thread */ | |
ed76cacb | 793 | th = kthread_run(usb_stor_control_thread, us, "usb-storage"); |
3f13e66e | 794 | if (IS_ERR(th)) { |
cbd3af54 FC |
795 | dev_warn(&us->pusb_intf->dev, |
796 | "Unable to start control thread\n"); | |
3f13e66e | 797 | return PTR_ERR(th); |
1da177e4 | 798 | } |
ed76cacb | 799 | us->ctl_thread = th; |
1da177e4 LT |
800 | |
801 | return 0; | |
802 | } | |
803 | ||
804 | /* Release all our dynamic resources */ | |
805 | static void usb_stor_release_resources(struct us_data *us) | |
806 | { | |
f0183a33 FB |
807 | /* |
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 | ||
f0183a33 FB |
839 | /* |
840 | * First stage of disconnect processing: stop SCSI scanning, | |
543f7810 AS |
841 | * remove the host, and stop accepting new commands |
842 | */ | |
77f46328 MD |
843 | static void quiesce_and_remove_host(struct us_data *us) |
844 | { | |
eecd11ed AS |
845 | struct Scsi_Host *host = us_to_host(us); |
846 | ||
543f7810 | 847 | /* If the device is really gone, cut short reset delays */ |
bb94a406 | 848 | if (us->pusb_dev->state == USB_STATE_NOTATTACHED) { |
543f7810 | 849 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); |
bb94a406 AS |
850 | wake_up(&us->delay_wait); |
851 | } | |
77f46328 | 852 | |
f0183a33 FB |
853 | /* |
854 | * Prevent SCSI scanning (if it hasn't started yet) | |
bb94a406 | 855 | * or wait for the SCSI-scanning routine to stop. |
543f7810 | 856 | */ |
bb94a406 AS |
857 | cancel_delayed_work_sync(&us->scan_dwork); |
858 | ||
859 | /* Balance autopm calls if scanning was cancelled */ | |
860 | if (test_bit(US_FLIDX_SCAN_PENDING, &us->dflags)) | |
861 | usb_autopm_put_interface_no_suspend(us->pusb_intf); | |
26186ba7 | 862 | |
f0183a33 FB |
863 | /* |
864 | * Removing the host will perform an orderly shutdown: caches | |
543f7810 AS |
865 | * synchronized, disks spun down, etc. |
866 | */ | |
eecd11ed | 867 | scsi_remove_host(host); |
2f67cd5b | 868 | |
f0183a33 FB |
869 | /* |
870 | * Prevent any new commands from being accepted and cut short | |
543f7810 AS |
871 | * reset delays. |
872 | */ | |
873 | scsi_lock(host); | |
874 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); | |
875 | scsi_unlock(host); | |
876 | wake_up(&us->delay_wait); | |
77f46328 MD |
877 | } |
878 | ||
879 | /* Second stage of disconnect processing: deallocate all resources */ | |
880 | static void release_everything(struct us_data *us) | |
881 | { | |
882 | usb_stor_release_resources(us); | |
883 | dissociate_dev(us); | |
884 | ||
f0183a33 FB |
885 | /* |
886 | * Drop our reference to the host; the SCSI core will free it | |
887 | * (and "us" along with it) when the refcount becomes 0. | |
888 | */ | |
77f46328 MD |
889 | scsi_host_put(us_to_host(us)); |
890 | } | |
891 | ||
bb94a406 AS |
892 | /* Delayed-work routine to carry out SCSI-device scanning */ |
893 | static void usb_stor_scan_dwork(struct work_struct *work) | |
1da177e4 | 894 | { |
bb94a406 AS |
895 | struct us_data *us = container_of(work, struct us_data, |
896 | scan_dwork.work); | |
cbd3af54 | 897 | struct device *dev = &us->pusb_intf->dev; |
1da177e4 | 898 | |
bb94a406 | 899 | dev_dbg(dev, "starting scan\n"); |
ec012476 | 900 | |
bb94a406 | 901 | /* For bulk-only devices, determine the max LUN value */ |
646a3843 MK |
902 | if (us->protocol == USB_PR_BULK && |
903 | !(us->fflags & US_FL_SINGLE_LUN) && | |
904 | !(us->fflags & US_FL_SCM_MULT_TARG)) { | |
bb94a406 AS |
905 | mutex_lock(&us->dev_mutex); |
906 | us->max_lun = usb_stor_Bulk_max_lun(us); | |
ec371326 ON |
907 | /* |
908 | * Allow proper scanning of devices that present more than 8 LUNs | |
f0183a33 FB |
909 | * While not affecting other devices that may need the previous |
910 | * behavior | |
ec371326 ON |
911 | */ |
912 | if (us->max_lun >= 8) | |
913 | us_to_host(us)->max_lun = us->max_lun+1; | |
bb94a406 | 914 | mutex_unlock(&us->dev_mutex); |
1da177e4 | 915 | } |
bb94a406 AS |
916 | scsi_scan_host(us_to_host(us)); |
917 | dev_dbg(dev, "scan complete\n"); | |
1da177e4 | 918 | |
bb94a406 | 919 | /* Should we unbind if no devices were detected? */ |
1da177e4 | 920 | |
f283925f | 921 | usb_autopm_put_interface(us->pusb_intf); |
bb94a406 | 922 | clear_bit(US_FLIDX_SCAN_PENDING, &us->dflags); |
1da177e4 LT |
923 | } |
924 | ||
4c1bd3d7 DV |
925 | static unsigned int usb_stor_sg_tablesize(struct usb_interface *intf) |
926 | { | |
927 | struct usb_device *usb_dev = interface_to_usbdev(intf); | |
928 | ||
929 | if (usb_dev->bus->sg_tablesize) { | |
930 | return usb_dev->bus->sg_tablesize; | |
931 | } | |
932 | return SG_ALL; | |
933 | } | |
1da177e4 | 934 | |
e6e244b6 AS |
935 | /* First part of general USB mass-storage probing */ |
936 | int usb_stor_probe1(struct us_data **pus, | |
937 | struct usb_interface *intf, | |
938 | const struct usb_device_id *id, | |
10892847 | 939 | const struct us_unusual_dev *unusual_dev, |
aa519be3 | 940 | struct scsi_host_template *sht) |
1da177e4 LT |
941 | { |
942 | struct Scsi_Host *host; | |
943 | struct us_data *us; | |
1da177e4 | 944 | int result; |
a00828e9 | 945 | |
191648d0 | 946 | dev_info(&intf->dev, "USB Mass Storage device detected\n"); |
1da177e4 LT |
947 | |
948 | /* | |
949 | * Ask the SCSI layer to allocate a host structure, with extra | |
950 | * space at the end for our private us_data structure. | |
951 | */ | |
aa519be3 | 952 | host = scsi_host_alloc(sht, sizeof(*us)); |
1da177e4 | 953 | if (!host) { |
191648d0 | 954 | dev_warn(&intf->dev, "Unable to allocate the scsi host\n"); |
1da177e4 LT |
955 | return -ENOMEM; |
956 | } | |
957 | ||
17f06022 RS |
958 | /* |
959 | * Allow 16-byte CDBs and thus > 2TB | |
960 | */ | |
961 | host->max_cmd_len = 16; | |
4c1bd3d7 | 962 | host->sg_tablesize = usb_stor_sg_tablesize(intf); |
e6e244b6 | 963 | *pus = us = host_to_us(host); |
4186ecf8 | 964 | mutex_init(&(us->dev_mutex)); |
c825bab0 | 965 | us_set_lock_class(&us->dev_mutex, intf); |
7119e3c3 | 966 | init_completion(&us->cmnd_ready); |
1da177e4 LT |
967 | init_completion(&(us->notify)); |
968 | init_waitqueue_head(&us->delay_wait); | |
bb94a406 | 969 | INIT_DELAYED_WORK(&us->scan_dwork, usb_stor_scan_dwork); |
1da177e4 LT |
970 | |
971 | /* Associate the us_data structure with the USB device */ | |
972 | result = associate_dev(us, intf); | |
973 | if (result) | |
974 | goto BadDevice; | |
975 | ||
e6e244b6 AS |
976 | /* Get the unusual_devs entries and the descriptors */ |
977 | result = get_device_info(us, id, unusual_dev); | |
3c332422 DD |
978 | if (result) |
979 | goto BadDevice; | |
1da177e4 | 980 | |
e6e244b6 AS |
981 | /* Get standard transport and protocol settings */ |
982 | get_transport(us); | |
983 | get_protocol(us); | |
984 | ||
f0183a33 FB |
985 | /* |
986 | * Give the caller a chance to fill in specialized transport | |
e6e244b6 AS |
987 | * or protocol settings. |
988 | */ | |
989 | return 0; | |
990 | ||
991 | BadDevice: | |
191648d0 | 992 | usb_stor_dbg(us, "storage_probe() failed\n"); |
e6e244b6 AS |
993 | release_everything(us); |
994 | return result; | |
995 | } | |
996 | EXPORT_SYMBOL_GPL(usb_stor_probe1); | |
997 | ||
998 | /* Second part of general USB mass-storage probing */ | |
999 | int usb_stor_probe2(struct us_data *us) | |
1000 | { | |
e6e244b6 | 1001 | int result; |
cbd3af54 | 1002 | struct device *dev = &us->pusb_intf->dev; |
e6e244b6 AS |
1003 | |
1004 | /* Make sure the transport and protocol have both been set */ | |
1005 | if (!us->transport || !us->proto_handler) { | |
1006 | result = -ENXIO; | |
1da177e4 | 1007 | goto BadDevice; |
e6e244b6 | 1008 | } |
191648d0 JP |
1009 | usb_stor_dbg(us, "Transport: %s\n", us->transport_name); |
1010 | usb_stor_dbg(us, "Protocol: %s\n", us->protocol_name); | |
e6e244b6 | 1011 | |
646a3843 MK |
1012 | if (us->fflags & US_FL_SCM_MULT_TARG) { |
1013 | /* | |
1014 | * SCM eUSCSI bridge devices can have different numbers | |
1015 | * of LUNs on different targets; allow all to be probed. | |
1016 | */ | |
1017 | us->max_lun = 7; | |
1018 | /* The eUSCSI itself has ID 7, so avoid scanning that */ | |
1019 | us_to_host(us)->this_id = 7; | |
1020 | /* max_id is 8 initially, so no need to set it here */ | |
1021 | } else { | |
1022 | /* In the normal case there is only a single target */ | |
1023 | us_to_host(us)->max_id = 1; | |
1024 | /* | |
1025 | * Like Windows, we won't store the LUN bits in CDB[1] for | |
1026 | * SCSI-2 devices using the Bulk-Only transport (even though | |
1027 | * this violates the SCSI spec). | |
1028 | */ | |
1029 | if (us->transport == usb_stor_Bulk_transport) | |
1030 | us_to_host(us)->no_scsi2_lun_in_cdb = 1; | |
1031 | } | |
1032 | ||
e6e244b6 AS |
1033 | /* fix for single-lun devices */ |
1034 | if (us->fflags & US_FL_SINGLE_LUN) | |
1035 | us->max_lun = 0; | |
1036 | ||
1037 | /* Find the endpoints and calculate pipe values */ | |
1da177e4 LT |
1038 | result = get_pipes(us); |
1039 | if (result) | |
1040 | goto BadDevice; | |
1041 | ||
21c13a4f AS |
1042 | /* |
1043 | * If the device returns invalid data for the first READ(10) | |
1044 | * command, indicate the command should be retried. | |
1045 | */ | |
1046 | if (us->fflags & US_FL_INITIAL_READ10) | |
1047 | set_bit(US_FLIDX_REDO_READ10, &us->dflags); | |
1048 | ||
1da177e4 LT |
1049 | /* Acquire all the other resources and add the host */ |
1050 | result = usb_stor_acquire_resources(us); | |
1051 | if (result) | |
1052 | goto BadDevice; | |
a094760b | 1053 | usb_autopm_get_interface_no_resume(us->pusb_intf); |
00fa43ef | 1054 | snprintf(us->scsi_name, sizeof(us->scsi_name), "usb-storage %s", |
97ad4a77 GKH |
1055 | dev_name(&us->pusb_intf->dev)); |
1056 | result = scsi_add_host(us_to_host(us), dev); | |
1da177e4 | 1057 | if (result) { |
cbd3af54 FC |
1058 | dev_warn(dev, |
1059 | "Unable to add the scsi host\n"); | |
a094760b | 1060 | goto HostAddErr; |
1da177e4 LT |
1061 | } |
1062 | ||
bb94a406 | 1063 | /* Submit the delayed_work for SCSI-device scanning */ |
bb94a406 | 1064 | set_bit(US_FLIDX_SCAN_PENDING, &us->dflags); |
1da177e4 | 1065 | |
bb94a406 AS |
1066 | if (delay_use > 0) |
1067 | dev_dbg(dev, "waiting for device to settle before scanning\n"); | |
1068 | queue_delayed_work(system_freezable_wq, &us->scan_dwork, | |
1069 | delay_use * HZ); | |
1da177e4 LT |
1070 | return 0; |
1071 | ||
1072 | /* We come here if there are any problems */ | |
a094760b HK |
1073 | HostAddErr: |
1074 | usb_autopm_put_interface_no_suspend(us->pusb_intf); | |
1da177e4 | 1075 | BadDevice: |
191648d0 | 1076 | usb_stor_dbg(us, "storage_probe() failed\n"); |
77f46328 | 1077 | release_everything(us); |
1da177e4 LT |
1078 | return result; |
1079 | } | |
e6e244b6 | 1080 | EXPORT_SYMBOL_GPL(usb_stor_probe2); |
1da177e4 | 1081 | |
e6e244b6 AS |
1082 | /* Handle a USB mass-storage disconnect */ |
1083 | void usb_stor_disconnect(struct usb_interface *intf) | |
1da177e4 LT |
1084 | { |
1085 | struct us_data *us = usb_get_intfdata(intf); | |
1086 | ||
77f46328 MD |
1087 | quiesce_and_remove_host(us); |
1088 | release_everything(us); | |
1da177e4 | 1089 | } |
e6e244b6 AS |
1090 | EXPORT_SYMBOL_GPL(usb_stor_disconnect); |
1091 | ||
aa519be3 AM |
1092 | static struct scsi_host_template usb_stor_host_template; |
1093 | ||
e6e244b6 AS |
1094 | /* The main probe routine for standard devices */ |
1095 | static int storage_probe(struct usb_interface *intf, | |
1096 | const struct usb_device_id *id) | |
1097 | { | |
10892847 | 1098 | const struct us_unusual_dev *unusual_dev; |
e6e244b6 AS |
1099 | struct us_data *us; |
1100 | int result; | |
fd7ff36d | 1101 | int size; |
e6e244b6 | 1102 | |
5bfd5b5d HG |
1103 | /* If uas is enabled and this device can do uas then ignore it. */ |
1104 | #if IS_ENABLED(CONFIG_USB_UAS) | |
a5011d44 | 1105 | if (uas_use_uas_driver(intf, id, NULL)) |
5bfd5b5d HG |
1106 | return -ENXIO; |
1107 | #endif | |
1108 | ||
e6e244b6 | 1109 | /* |
e6e244b6 AS |
1110 | * If the device isn't standard (is handled by a subdriver |
1111 | * module) then don't accept it. | |
1112 | */ | |
f61870ee | 1113 | if (usb_usual_ignore_device(intf)) |
e6e244b6 AS |
1114 | return -ENXIO; |
1115 | ||
1116 | /* | |
1117 | * Call the general probe procedures. | |
1118 | * | |
1119 | * The unusual_dev_list array is parallel to the usb_storage_usb_ids | |
1120 | * table, so we use the index of the id entry to find the | |
1121 | * corresponding unusual_devs entry. | |
1122 | */ | |
fd7ff36d HL |
1123 | |
1124 | size = ARRAY_SIZE(us_unusual_dev_list); | |
1125 | if (id >= usb_storage_usb_ids && id < usb_storage_usb_ids + size) { | |
1126 | unusual_dev = (id - usb_storage_usb_ids) + us_unusual_dev_list; | |
1127 | } else { | |
1128 | unusual_dev = &for_dynamic_ids; | |
1129 | ||
191648d0 | 1130 | dev_dbg(&intf->dev, "Use Bulk-Only transport with the Transparent SCSI protocol for dynamic id: 0x%04x 0x%04x\n", |
fd7ff36d HL |
1131 | id->idVendor, id->idProduct); |
1132 | } | |
1133 | ||
aa519be3 AM |
1134 | result = usb_stor_probe1(&us, intf, id, unusual_dev, |
1135 | &usb_stor_host_template); | |
e6e244b6 AS |
1136 | if (result) |
1137 | return result; | |
1138 | ||
1139 | /* No special transport or protocol settings in the main module */ | |
1140 | ||
1141 | result = usb_stor_probe2(us); | |
1142 | return result; | |
1143 | } | |
1da177e4 | 1144 | |
ce2596df | 1145 | static struct usb_driver usb_storage_driver = { |
aa519be3 | 1146 | .name = DRV_NAME, |
ce2596df | 1147 | .probe = storage_probe, |
e6e244b6 AS |
1148 | .disconnect = usb_stor_disconnect, |
1149 | .suspend = usb_stor_suspend, | |
1150 | .resume = usb_stor_resume, | |
1151 | .reset_resume = usb_stor_reset_resume, | |
1152 | .pre_reset = usb_stor_pre_reset, | |
1153 | .post_reset = usb_stor_post_reset, | |
1154 | .id_table = usb_storage_usb_ids, | |
f283925f | 1155 | .supports_autosuspend = 1, |
543f7810 | 1156 | .soft_unbind = 1, |
ce2596df AS |
1157 | }; |
1158 | ||
aa519be3 | 1159 | module_usb_stor_driver(usb_storage_driver, usb_stor_host_template, DRV_NAME); |