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) | |
8 | * (c) 2003 Alan Stern (stern@rowland.harvard.edu) | |
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 | ||
1da177e4 LT |
48 | #include <linux/sched.h> |
49 | #include <linux/errno.h> | |
7dfb7103 | 50 | #include <linux/freezer.h> |
1da177e4 LT |
51 | #include <linux/module.h> |
52 | #include <linux/init.h> | |
53 | #include <linux/slab.h> | |
3f13e66e | 54 | #include <linux/kthread.h> |
4186ecf8 | 55 | #include <linux/mutex.h> |
00f8b0c1 | 56 | #include <linux/utsname.h> |
1da177e4 LT |
57 | |
58 | #include <scsi/scsi.h> | |
59 | #include <scsi/scsi_cmnd.h> | |
60 | #include <scsi/scsi_device.h> | |
61 | ||
62 | #include "usb.h" | |
63 | #include "scsiglue.h" | |
64 | #include "transport.h" | |
65 | #include "protocol.h" | |
66 | #include "debug.h" | |
67 | #include "initializers.h" | |
68 | ||
69 | #ifdef CONFIG_USB_STORAGE_USBAT | |
70 | #include "shuttle_usbat.h" | |
71 | #endif | |
72 | #ifdef CONFIG_USB_STORAGE_SDDR09 | |
73 | #include "sddr09.h" | |
74 | #endif | |
75 | #ifdef CONFIG_USB_STORAGE_SDDR55 | |
76 | #include "sddr55.h" | |
77 | #endif | |
1da177e4 LT |
78 | #ifdef CONFIG_USB_STORAGE_FREECOM |
79 | #include "freecom.h" | |
80 | #endif | |
81 | #ifdef CONFIG_USB_STORAGE_ISD200 | |
82 | #include "isd200.h" | |
83 | #endif | |
84 | #ifdef CONFIG_USB_STORAGE_DATAFAB | |
85 | #include "datafab.h" | |
86 | #endif | |
87 | #ifdef CONFIG_USB_STORAGE_JUMPSHOT | |
88 | #include "jumpshot.h" | |
89 | #endif | |
34008dbf MD |
90 | #ifdef CONFIG_USB_STORAGE_ONETOUCH |
91 | #include "onetouch.h" | |
92 | #endif | |
e80b0fad MD |
93 | #ifdef CONFIG_USB_STORAGE_ALAUDA |
94 | #include "alauda.h" | |
95 | #endif | |
dfe0d3ba MD |
96 | #ifdef CONFIG_USB_STORAGE_KARMA |
97 | #include "karma.h" | |
98 | #endif | |
d277064e | 99 | #ifdef CONFIG_USB_STORAGE_CYPRESS_ATACB |
100 | #include "cypress_atacb.h" | |
101 | #endif | |
32fe5e39 | 102 | #include "sierra_ms.h" |
281b064f | 103 | #include "option_ms.h" |
1da177e4 LT |
104 | |
105 | /* Some informational data */ | |
106 | MODULE_AUTHOR("Matthew Dharm <mdharm-usb@one-eyed-alien.net>"); | |
107 | MODULE_DESCRIPTION("USB Mass Storage driver for Linux"); | |
108 | MODULE_LICENSE("GPL"); | |
109 | ||
110 | static unsigned int delay_use = 5; | |
111 | module_param(delay_use, uint, S_IRUGO | S_IWUSR); | |
112 | MODULE_PARM_DESC(delay_use, "seconds to delay before using a new device"); | |
113 | ||
d4f373e5 AS |
114 | static char *quirks; |
115 | module_param(quirks, charp, S_IRUGO); | |
116 | MODULE_PARM_DESC(quirks, "supplemental list of device IDs and their quirks"); | |
117 | ||
118 | struct quirks_entry { | |
119 | u16 vid, pid; | |
120 | u32 fflags; | |
121 | }; | |
122 | static struct quirks_entry *quirks_list, *quirks_end; | |
123 | ||
1da177e4 | 124 | |
a00828e9 PZ |
125 | /* |
126 | * The entries in this table correspond, line for line, | |
127 | * with the entries of us_unusual_dev_list[]. | |
1da177e4 | 128 | */ |
a00828e9 | 129 | #ifndef CONFIG_USB_LIBUSUAL |
1da177e4 LT |
130 | |
131 | #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ | |
132 | vendorName, productName,useProtocol, useTransport, \ | |
133 | initFunction, flags) \ | |
a00828e9 PZ |
134 | { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin,bcdDeviceMax), \ |
135 | .driver_info = (flags)|(USB_US_TYPE_STOR<<24) } | |
136 | ||
25ff1c31 AS |
137 | #define COMPLIANT_DEV UNUSUAL_DEV |
138 | ||
a00828e9 PZ |
139 | #define USUAL_DEV(useProto, useTrans, useType) \ |
140 | { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, useProto, useTrans), \ | |
141 | .driver_info = (USB_US_TYPE_STOR<<24) } | |
1da177e4 LT |
142 | |
143 | static struct usb_device_id storage_usb_ids [] = { | |
144 | ||
145 | # include "unusual_devs.h" | |
146 | #undef UNUSUAL_DEV | |
25ff1c31 | 147 | #undef COMPLIANT_DEV |
a00828e9 | 148 | #undef USUAL_DEV |
1da177e4 LT |
149 | /* Terminating entry */ |
150 | { } | |
151 | }; | |
152 | ||
153 | MODULE_DEVICE_TABLE (usb, storage_usb_ids); | |
a00828e9 | 154 | #endif /* CONFIG_USB_LIBUSUAL */ |
1da177e4 LT |
155 | |
156 | /* This is the list of devices we recognize, along with their flag data */ | |
157 | ||
158 | /* The vendor name should be kept at eight characters or less, and | |
159 | * the product name should be kept at 16 characters or less. If a device | |
160 | * has the US_FL_FIX_INQUIRY flag, then the vendor and product names | |
161 | * normally generated by a device thorugh the INQUIRY response will be | |
162 | * taken from this list, and this is the reason for the above size | |
163 | * restriction. However, if the flag is not present, then you | |
164 | * are free to use as many characters as you like. | |
165 | */ | |
166 | ||
1da177e4 LT |
167 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ |
168 | vendor_name, product_name, use_protocol, use_transport, \ | |
169 | init_function, Flags) \ | |
170 | { \ | |
171 | .vendorName = vendor_name, \ | |
172 | .productName = product_name, \ | |
173 | .useProtocol = use_protocol, \ | |
174 | .useTransport = use_transport, \ | |
175 | .initFunction = init_function, \ | |
a00828e9 PZ |
176 | } |
177 | ||
25ff1c31 AS |
178 | #define COMPLIANT_DEV UNUSUAL_DEV |
179 | ||
a00828e9 PZ |
180 | #define USUAL_DEV(use_protocol, use_transport, use_type) \ |
181 | { \ | |
182 | .useProtocol = use_protocol, \ | |
183 | .useTransport = use_transport, \ | |
1da177e4 LT |
184 | } |
185 | ||
186 | static struct us_unusual_dev us_unusual_dev_list[] = { | |
187 | # include "unusual_devs.h" | |
188 | # undef UNUSUAL_DEV | |
25ff1c31 | 189 | # undef COMPLIANT_DEV |
a00828e9 | 190 | # undef USUAL_DEV |
1da177e4 LT |
191 | |
192 | /* Terminating entry */ | |
193 | { NULL } | |
194 | }; | |
195 | ||
ce2596df AS |
196 | |
197 | #ifdef CONFIG_PM /* Minimal support for suspend and resume */ | |
198 | ||
199 | static int storage_suspend(struct usb_interface *iface, pm_message_t message) | |
200 | { | |
201 | struct us_data *us = usb_get_intfdata(iface); | |
202 | ||
203 | /* Wait until no command is running */ | |
4186ecf8 | 204 | mutex_lock(&us->dev_mutex); |
ce2596df | 205 | |
441b62c1 | 206 | US_DEBUGP("%s\n", __func__); |
7931e1c6 MD |
207 | if (us->suspend_resume_hook) |
208 | (us->suspend_resume_hook)(us, US_SUSPEND); | |
ce2596df | 209 | |
d526875d GKH |
210 | /* When runtime PM is working, we'll set a flag to indicate |
211 | * whether we should autoresume when a SCSI request arrives. */ | |
212 | ||
4186ecf8 | 213 | mutex_unlock(&us->dev_mutex); |
ce2596df AS |
214 | return 0; |
215 | } | |
216 | ||
217 | static int storage_resume(struct usb_interface *iface) | |
218 | { | |
219 | struct us_data *us = usb_get_intfdata(iface); | |
220 | ||
d526875d | 221 | mutex_lock(&us->dev_mutex); |
8dfe4b14 | 222 | |
441b62c1 | 223 | US_DEBUGP("%s\n", __func__); |
7931e1c6 MD |
224 | if (us->suspend_resume_hook) |
225 | (us->suspend_resume_hook)(us, US_RESUME); | |
ce2596df | 226 | |
d526875d | 227 | mutex_unlock(&us->dev_mutex); |
ce2596df AS |
228 | return 0; |
229 | } | |
230 | ||
f07600cf AS |
231 | static int storage_reset_resume(struct usb_interface *iface) |
232 | { | |
233 | struct us_data *us = usb_get_intfdata(iface); | |
234 | ||
441b62c1 | 235 | US_DEBUGP("%s\n", __func__); |
f07600cf AS |
236 | |
237 | /* Report the reset to the SCSI core */ | |
238 | usb_stor_report_bus_reset(us); | |
239 | ||
240 | /* FIXME: Notify the subdrivers that they need to reinitialize | |
241 | * the device */ | |
242 | return 0; | |
243 | } | |
244 | ||
ce2596df | 245 | #endif /* CONFIG_PM */ |
1da177e4 | 246 | |
47104b0d AS |
247 | /* |
248 | * The next two routines get called just before and just after | |
249 | * a USB port reset, whether from this driver or a different one. | |
250 | */ | |
251 | ||
f07600cf | 252 | static int storage_pre_reset(struct usb_interface *iface) |
47104b0d AS |
253 | { |
254 | struct us_data *us = usb_get_intfdata(iface); | |
255 | ||
441b62c1 | 256 | US_DEBUGP("%s\n", __func__); |
47104b0d AS |
257 | |
258 | /* Make sure no command runs during the reset */ | |
259 | mutex_lock(&us->dev_mutex); | |
f07600cf | 260 | return 0; |
47104b0d AS |
261 | } |
262 | ||
f07600cf | 263 | static int storage_post_reset(struct usb_interface *iface) |
47104b0d AS |
264 | { |
265 | struct us_data *us = usb_get_intfdata(iface); | |
266 | ||
441b62c1 | 267 | US_DEBUGP("%s\n", __func__); |
47104b0d AS |
268 | |
269 | /* Report the reset to the SCSI core */ | |
47104b0d | 270 | usb_stor_report_bus_reset(us); |
47104b0d AS |
271 | |
272 | /* FIXME: Notify the subdrivers that they need to reinitialize | |
273 | * the device */ | |
0458d5b4 | 274 | |
f07600cf AS |
275 | mutex_unlock(&us->dev_mutex); |
276 | return 0; | |
47104b0d AS |
277 | } |
278 | ||
1da177e4 LT |
279 | /* |
280 | * fill_inquiry_response takes an unsigned char array (which must | |
281 | * be at least 36 characters) and populates the vendor name, | |
282 | * product name, and revision fields. Then the array is copied | |
283 | * into the SCSI command's response buffer (oddly enough | |
284 | * called request_buffer). data_len contains the length of the | |
285 | * data array, which again must be at least 36. | |
286 | */ | |
287 | ||
288 | void fill_inquiry_response(struct us_data *us, unsigned char *data, | |
289 | unsigned int data_len) | |
290 | { | |
291 | if (data_len<36) // You lose. | |
292 | return; | |
293 | ||
294 | if(data[0]&0x20) { /* USB device currently not connected. Return | |
295 | peripheral qualifier 001b ("...however, the | |
296 | physical device is not currently connected | |
297 | to this logical unit") and leave vendor and | |
298 | product identification empty. ("If the target | |
299 | does store some of the INQUIRY data on the | |
300 | device, it may return zeros or ASCII spaces | |
301 | (20h) in those fields until the data is | |
302 | available from the device."). */ | |
303 | memset(data+8,0,28); | |
304 | } else { | |
305 | u16 bcdDevice = le16_to_cpu(us->pusb_dev->descriptor.bcdDevice); | |
306 | memcpy(data+8, us->unusual_dev->vendorName, | |
307 | strlen(us->unusual_dev->vendorName) > 8 ? 8 : | |
308 | strlen(us->unusual_dev->vendorName)); | |
309 | memcpy(data+16, us->unusual_dev->productName, | |
310 | strlen(us->unusual_dev->productName) > 16 ? 16 : | |
311 | strlen(us->unusual_dev->productName)); | |
312 | data[32] = 0x30 + ((bcdDevice>>12) & 0x0F); | |
313 | data[33] = 0x30 + ((bcdDevice>>8) & 0x0F); | |
314 | data[34] = 0x30 + ((bcdDevice>>4) & 0x0F); | |
315 | data[35] = 0x30 + ((bcdDevice) & 0x0F); | |
316 | } | |
317 | ||
318 | usb_stor_set_xfer_buf(data, data_len, us->srb); | |
319 | } | |
320 | ||
321 | static int usb_stor_control_thread(void * __us) | |
322 | { | |
323 | struct us_data *us = (struct us_data *)__us; | |
324 | struct Scsi_Host *host = us_to_host(us); | |
325 | ||
1da177e4 LT |
326 | for(;;) { |
327 | US_DEBUGP("*** thread sleeping.\n"); | |
7119e3c3 | 328 | if (wait_for_completion_interruptible(&us->cmnd_ready)) |
1da177e4 | 329 | break; |
7119e3c3 | 330 | |
1da177e4 LT |
331 | US_DEBUGP("*** thread awakened.\n"); |
332 | ||
333 | /* lock the device pointers */ | |
4186ecf8 | 334 | mutex_lock(&(us->dev_mutex)); |
1da177e4 | 335 | |
543f7810 AS |
336 | /* lock access to the state */ |
337 | scsi_lock(host); | |
338 | ||
339 | /* When we are called with no command pending, we're done */ | |
340 | if (us->srb == NULL) { | |
341 | scsi_unlock(host); | |
4186ecf8 | 342 | mutex_unlock(&us->dev_mutex); |
543f7810 | 343 | US_DEBUGP("-- exiting\n"); |
1da177e4 LT |
344 | break; |
345 | } | |
346 | ||
1da177e4 | 347 | /* has the command timed out *already* ? */ |
7e4d6c38 | 348 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { |
1da177e4 LT |
349 | us->srb->result = DID_ABORT << 16; |
350 | goto SkipForAbort; | |
351 | } | |
352 | ||
353 | scsi_unlock(host); | |
354 | ||
355 | /* reject the command if the direction indicator | |
356 | * is UNKNOWN | |
357 | */ | |
358 | if (us->srb->sc_data_direction == DMA_BIDIRECTIONAL) { | |
359 | US_DEBUGP("UNKNOWN data direction\n"); | |
360 | us->srb->result = DID_ERROR << 16; | |
361 | } | |
362 | ||
363 | /* reject if target != 0 or if LUN is higher than | |
364 | * the maximum known LUN | |
365 | */ | |
366 | else if (us->srb->device->id && | |
7e4d6c38 | 367 | !(us->fflags & US_FL_SCM_MULT_TARG)) { |
1da177e4 LT |
368 | US_DEBUGP("Bad target number (%d:%d)\n", |
369 | us->srb->device->id, us->srb->device->lun); | |
370 | us->srb->result = DID_BAD_TARGET << 16; | |
371 | } | |
372 | ||
373 | else if (us->srb->device->lun > us->max_lun) { | |
374 | US_DEBUGP("Bad LUN (%d:%d)\n", | |
375 | us->srb->device->id, us->srb->device->lun); | |
376 | us->srb->result = DID_BAD_TARGET << 16; | |
377 | } | |
378 | ||
379 | /* Handle those devices which need us to fake | |
380 | * their inquiry data */ | |
381 | else if ((us->srb->cmnd[0] == INQUIRY) && | |
7e4d6c38 | 382 | (us->fflags & US_FL_FIX_INQUIRY)) { |
1da177e4 LT |
383 | unsigned char data_ptr[36] = { |
384 | 0x00, 0x80, 0x02, 0x02, | |
385 | 0x1F, 0x00, 0x00, 0x00}; | |
386 | ||
387 | US_DEBUGP("Faking INQUIRY command\n"); | |
388 | fill_inquiry_response(us, data_ptr, 36); | |
389 | us->srb->result = SAM_STAT_GOOD; | |
390 | } | |
391 | ||
392 | /* we've got a command, let's do it! */ | |
393 | else { | |
394 | US_DEBUG(usb_stor_show_command(us->srb)); | |
395 | us->proto_handler(us->srb, us); | |
396 | } | |
397 | ||
398 | /* lock access to the state */ | |
399 | scsi_lock(host); | |
400 | ||
401 | /* indicate that the command is done */ | |
543f7810 | 402 | if (us->srb->result != DID_ABORT << 16) { |
1da177e4 LT |
403 | US_DEBUGP("scsi cmd done, result=0x%x\n", |
404 | us->srb->result); | |
405 | us->srb->scsi_done(us->srb); | |
406 | } else { | |
407 | SkipForAbort: | |
408 | US_DEBUGP("scsi command aborted\n"); | |
409 | } | |
410 | ||
411 | /* If an abort request was received we need to signal that | |
412 | * the abort has finished. The proper test for this is | |
413 | * the TIMED_OUT flag, not srb->result == DID_ABORT, because | |
226173ed MD |
414 | * the timeout might have occurred after the command had |
415 | * already completed with a different result code. */ | |
7e4d6c38 | 416 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { |
1da177e4 LT |
417 | complete(&(us->notify)); |
418 | ||
226173ed | 419 | /* Allow USB transfers to resume */ |
7e4d6c38 AS |
420 | clear_bit(US_FLIDX_ABORTING, &us->dflags); |
421 | clear_bit(US_FLIDX_TIMED_OUT, &us->dflags); | |
226173ed MD |
422 | } |
423 | ||
1da177e4 LT |
424 | /* finished working on this command */ |
425 | us->srb = NULL; | |
426 | scsi_unlock(host); | |
427 | ||
428 | /* unlock the device pointers */ | |
4186ecf8 | 429 | mutex_unlock(&us->dev_mutex); |
1da177e4 LT |
430 | } /* for (;;) */ |
431 | ||
ed76cacb AS |
432 | /* Wait until we are told to stop */ |
433 | for (;;) { | |
434 | set_current_state(TASK_INTERRUPTIBLE); | |
435 | if (kthread_should_stop()) | |
436 | break; | |
437 | schedule(); | |
438 | } | |
439 | __set_current_state(TASK_RUNNING); | |
440 | return 0; | |
1da177e4 LT |
441 | } |
442 | ||
443 | /*********************************************************************** | |
444 | * Device probing and disconnecting | |
445 | ***********************************************************************/ | |
446 | ||
447 | /* Associate our private data with the USB device */ | |
448 | static int associate_dev(struct us_data *us, struct usb_interface *intf) | |
449 | { | |
441b62c1 | 450 | US_DEBUGP("-- %s\n", __func__); |
1da177e4 LT |
451 | |
452 | /* Fill in the device-related fields */ | |
453 | us->pusb_dev = interface_to_usbdev(intf); | |
454 | us->pusb_intf = intf; | |
455 | us->ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
456 | US_DEBUGP("Vendor: 0x%04x, Product: 0x%04x, Revision: 0x%04x\n", | |
457 | le16_to_cpu(us->pusb_dev->descriptor.idVendor), | |
458 | le16_to_cpu(us->pusb_dev->descriptor.idProduct), | |
459 | le16_to_cpu(us->pusb_dev->descriptor.bcdDevice)); | |
460 | US_DEBUGP("Interface Subclass: 0x%02x, Protocol: 0x%02x\n", | |
461 | intf->cur_altsetting->desc.bInterfaceSubClass, | |
462 | intf->cur_altsetting->desc.bInterfaceProtocol); | |
463 | ||
464 | /* Store our private data in the interface */ | |
465 | usb_set_intfdata(intf, us); | |
466 | ||
467 | /* Allocate the device-related DMA-mapped buffers */ | |
468 | us->cr = usb_buffer_alloc(us->pusb_dev, sizeof(*us->cr), | |
469 | GFP_KERNEL, &us->cr_dma); | |
470 | if (!us->cr) { | |
471 | US_DEBUGP("usb_ctrlrequest allocation failed\n"); | |
472 | return -ENOMEM; | |
473 | } | |
474 | ||
475 | us->iobuf = usb_buffer_alloc(us->pusb_dev, US_IOBUF_SIZE, | |
476 | GFP_KERNEL, &us->iobuf_dma); | |
477 | if (!us->iobuf) { | |
478 | US_DEBUGP("I/O buffer allocation failed\n"); | |
479 | return -ENOMEM; | |
480 | } | |
481 | return 0; | |
482 | } | |
483 | ||
d4f373e5 AS |
484 | /* Adjust device flags based on the "quirks=" module parameter */ |
485 | static void adjust_quirks(struct us_data *us) | |
486 | { | |
487 | u16 vid, pid; | |
488 | struct quirks_entry *q; | |
489 | unsigned int mask = (US_FL_FIX_CAPACITY | US_FL_IGNORE_DEVICE | | |
490 | US_FL_NOT_LOCKABLE | US_FL_MAX_SECTORS_64 | | |
491 | US_FL_IGNORE_RESIDUE | US_FL_SINGLE_LUN | | |
492 | US_FL_NO_WP_DETECT); | |
493 | ||
494 | vid = le16_to_cpu(us->pusb_dev->descriptor.idVendor); | |
495 | pid = le16_to_cpu(us->pusb_dev->descriptor.idProduct); | |
496 | ||
497 | for (q = quirks_list; q != quirks_end; ++q) { | |
498 | if (q->vid == vid && q->pid == pid) { | |
499 | us->fflags = (us->fflags & ~mask) | q->fflags; | |
500 | dev_info(&us->pusb_intf->dev, "Quirks match for " | |
501 | "vid %04x pid %04x: %x\n", | |
502 | vid, pid, q->fflags); | |
503 | break; | |
504 | } | |
505 | } | |
506 | } | |
507 | ||
a00828e9 PZ |
508 | /* Find an unusual_dev descriptor (always succeeds in the current code) */ |
509 | static struct us_unusual_dev *find_unusual(const struct usb_device_id *id) | |
510 | { | |
511 | const int id_index = id - storage_usb_ids; | |
512 | return &us_unusual_dev_list[id_index]; | |
513 | } | |
514 | ||
1da177e4 | 515 | /* Get the unusual_devs entries and the string descriptors */ |
3c332422 | 516 | static int get_device_info(struct us_data *us, const struct usb_device_id *id) |
1da177e4 LT |
517 | { |
518 | struct usb_device *dev = us->pusb_dev; | |
519 | struct usb_interface_descriptor *idesc = | |
520 | &us->pusb_intf->cur_altsetting->desc; | |
a00828e9 | 521 | struct us_unusual_dev *unusual_dev = find_unusual(id); |
1da177e4 LT |
522 | |
523 | /* Store the entries */ | |
524 | us->unusual_dev = unusual_dev; | |
525 | us->subclass = (unusual_dev->useProtocol == US_SC_DEVICE) ? | |
526 | idesc->bInterfaceSubClass : | |
527 | unusual_dev->useProtocol; | |
528 | us->protocol = (unusual_dev->useTransport == US_PR_DEVICE) ? | |
529 | idesc->bInterfaceProtocol : | |
530 | unusual_dev->useTransport; | |
7e4d6c38 | 531 | us->fflags = USB_US_ORIG_FLAGS(id->driver_info); |
d4f373e5 | 532 | adjust_quirks(us); |
1da177e4 | 533 | |
7e4d6c38 | 534 | if (us->fflags & US_FL_IGNORE_DEVICE) { |
3c332422 DD |
535 | printk(KERN_INFO USB_STORAGE "device ignored\n"); |
536 | return -ENODEV; | |
537 | } | |
538 | ||
1da177e4 LT |
539 | /* |
540 | * This flag is only needed when we're in high-speed, so let's | |
541 | * disable it if we're in full-speed | |
542 | */ | |
543 | if (dev->speed != USB_SPEED_HIGH) | |
7e4d6c38 | 544 | us->fflags &= ~US_FL_GO_SLOW; |
1da177e4 LT |
545 | |
546 | /* Log a message if a non-generic unusual_dev entry contains an | |
547 | * unnecessary subclass or protocol override. This may stimulate | |
548 | * reports from users that will help us remove unneeded entries | |
549 | * from the unusual_devs.h table. | |
550 | */ | |
551 | if (id->idVendor || id->idProduct) { | |
4c4c9432 | 552 | static const char *msgs[3] = { |
1da177e4 LT |
553 | "an unneeded SubClass entry", |
554 | "an unneeded Protocol entry", | |
555 | "unneeded SubClass and Protocol entries"}; | |
556 | struct usb_device_descriptor *ddesc = &dev->descriptor; | |
557 | int msg = -1; | |
558 | ||
559 | if (unusual_dev->useProtocol != US_SC_DEVICE && | |
560 | us->subclass == idesc->bInterfaceSubClass) | |
561 | msg += 1; | |
562 | if (unusual_dev->useTransport != US_PR_DEVICE && | |
563 | us->protocol == idesc->bInterfaceProtocol) | |
564 | msg += 2; | |
7e4d6c38 | 565 | if (msg >= 0 && !(us->fflags & US_FL_NEED_OVERRIDE)) |
1da177e4 LT |
566 | printk(KERN_NOTICE USB_STORAGE "This device " |
567 | "(%04x,%04x,%04x S %02x P %02x)" | |
5650b4dd PD |
568 | " has %s in unusual_devs.h (kernel" |
569 | " %s)\n" | |
1da177e4 | 570 | " Please send a copy of this message to " |
cef03f8f AL |
571 | "<linux-usb@vger.kernel.org> and " |
572 | "<usb-storage@lists.one-eyed-alien.net>\n", | |
1da177e4 LT |
573 | le16_to_cpu(ddesc->idVendor), |
574 | le16_to_cpu(ddesc->idProduct), | |
575 | le16_to_cpu(ddesc->bcdDevice), | |
576 | idesc->bInterfaceSubClass, | |
577 | idesc->bInterfaceProtocol, | |
5650b4dd | 578 | msgs[msg], |
00f8b0c1 | 579 | utsname()->release); |
1da177e4 | 580 | } |
3c332422 DD |
581 | |
582 | return 0; | |
1da177e4 LT |
583 | } |
584 | ||
585 | /* Get the transport settings */ | |
586 | static int get_transport(struct us_data *us) | |
587 | { | |
588 | switch (us->protocol) { | |
589 | case US_PR_CB: | |
590 | us->transport_name = "Control/Bulk"; | |
591 | us->transport = usb_stor_CB_transport; | |
592 | us->transport_reset = usb_stor_CB_reset; | |
593 | us->max_lun = 7; | |
594 | break; | |
595 | ||
596 | case US_PR_CBI: | |
597 | us->transport_name = "Control/Bulk/Interrupt"; | |
64648a9d | 598 | us->transport = usb_stor_CB_transport; |
1da177e4 LT |
599 | us->transport_reset = usb_stor_CB_reset; |
600 | us->max_lun = 7; | |
601 | break; | |
602 | ||
603 | case US_PR_BULK: | |
604 | us->transport_name = "Bulk"; | |
605 | us->transport = usb_stor_Bulk_transport; | |
606 | us->transport_reset = usb_stor_Bulk_reset; | |
607 | break; | |
608 | ||
609 | #ifdef CONFIG_USB_STORAGE_USBAT | |
b7b1e655 DD |
610 | case US_PR_USBAT: |
611 | us->transport_name = "Shuttle USBAT"; | |
1da177e4 LT |
612 | us->transport = usbat_transport; |
613 | us->transport_reset = usb_stor_CB_reset; | |
614 | us->max_lun = 1; | |
615 | break; | |
616 | #endif | |
617 | ||
618 | #ifdef CONFIG_USB_STORAGE_SDDR09 | |
619 | case US_PR_EUSB_SDDR09: | |
620 | us->transport_name = "EUSB/SDDR09"; | |
621 | us->transport = sddr09_transport; | |
622 | us->transport_reset = usb_stor_CB_reset; | |
623 | us->max_lun = 0; | |
624 | break; | |
625 | #endif | |
626 | ||
627 | #ifdef CONFIG_USB_STORAGE_SDDR55 | |
628 | case US_PR_SDDR55: | |
629 | us->transport_name = "SDDR55"; | |
630 | us->transport = sddr55_transport; | |
631 | us->transport_reset = sddr55_reset; | |
632 | us->max_lun = 0; | |
633 | break; | |
634 | #endif | |
635 | ||
636 | #ifdef CONFIG_USB_STORAGE_DPCM | |
637 | case US_PR_DPCM_USB: | |
638 | us->transport_name = "Control/Bulk-EUSB/SDDR09"; | |
639 | us->transport = dpcm_transport; | |
640 | us->transport_reset = usb_stor_CB_reset; | |
641 | us->max_lun = 1; | |
642 | break; | |
643 | #endif | |
644 | ||
645 | #ifdef CONFIG_USB_STORAGE_FREECOM | |
646 | case US_PR_FREECOM: | |
647 | us->transport_name = "Freecom"; | |
648 | us->transport = freecom_transport; | |
649 | us->transport_reset = usb_stor_freecom_reset; | |
650 | us->max_lun = 0; | |
651 | break; | |
652 | #endif | |
653 | ||
654 | #ifdef CONFIG_USB_STORAGE_DATAFAB | |
655 | case US_PR_DATAFAB: | |
656 | us->transport_name = "Datafab Bulk-Only"; | |
657 | us->transport = datafab_transport; | |
658 | us->transport_reset = usb_stor_Bulk_reset; | |
659 | us->max_lun = 1; | |
660 | break; | |
661 | #endif | |
662 | ||
663 | #ifdef CONFIG_USB_STORAGE_JUMPSHOT | |
664 | case US_PR_JUMPSHOT: | |
665 | us->transport_name = "Lexar Jumpshot Control/Bulk"; | |
666 | us->transport = jumpshot_transport; | |
667 | us->transport_reset = usb_stor_Bulk_reset; | |
668 | us->max_lun = 1; | |
669 | break; | |
670 | #endif | |
671 | ||
b383539e DD |
672 | #ifdef CONFIG_USB_STORAGE_ALAUDA |
673 | case US_PR_ALAUDA: | |
674 | us->transport_name = "Alauda Control/Bulk"; | |
675 | us->transport = alauda_transport; | |
676 | us->transport_reset = usb_stor_Bulk_reset; | |
677 | us->max_lun = 1; | |
678 | break; | |
679 | #endif | |
680 | ||
dfe0d3ba MD |
681 | #ifdef CONFIG_USB_STORAGE_KARMA |
682 | case US_PR_KARMA: | |
683 | us->transport_name = "Rio Karma/Bulk"; | |
684 | us->transport = rio_karma_transport; | |
685 | us->transport_reset = usb_stor_Bulk_reset; | |
686 | break; | |
687 | #endif | |
688 | ||
1da177e4 LT |
689 | default: |
690 | return -EIO; | |
691 | } | |
692 | US_DEBUGP("Transport: %s\n", us->transport_name); | |
693 | ||
694 | /* fix for single-lun devices */ | |
7e4d6c38 | 695 | if (us->fflags & US_FL_SINGLE_LUN) |
1da177e4 LT |
696 | us->max_lun = 0; |
697 | return 0; | |
698 | } | |
699 | ||
700 | /* Get the protocol settings */ | |
701 | static int get_protocol(struct us_data *us) | |
702 | { | |
703 | switch (us->subclass) { | |
704 | case US_SC_RBC: | |
705 | us->protocol_name = "Reduced Block Commands (RBC)"; | |
706 | us->proto_handler = usb_stor_transparent_scsi_command; | |
707 | break; | |
708 | ||
709 | case US_SC_8020: | |
710 | us->protocol_name = "8020i"; | |
3dae5345 | 711 | us->proto_handler = usb_stor_pad12_command; |
1da177e4 LT |
712 | us->max_lun = 0; |
713 | break; | |
714 | ||
715 | case US_SC_QIC: | |
716 | us->protocol_name = "QIC-157"; | |
3dae5345 | 717 | us->proto_handler = usb_stor_pad12_command; |
1da177e4 LT |
718 | us->max_lun = 0; |
719 | break; | |
720 | ||
721 | case US_SC_8070: | |
722 | us->protocol_name = "8070i"; | |
3dae5345 | 723 | us->proto_handler = usb_stor_pad12_command; |
1da177e4 LT |
724 | us->max_lun = 0; |
725 | break; | |
726 | ||
727 | case US_SC_SCSI: | |
728 | us->protocol_name = "Transparent SCSI"; | |
729 | us->proto_handler = usb_stor_transparent_scsi_command; | |
730 | break; | |
731 | ||
732 | case US_SC_UFI: | |
733 | us->protocol_name = "Uniform Floppy Interface (UFI)"; | |
734 | us->proto_handler = usb_stor_ufi_command; | |
735 | break; | |
736 | ||
737 | #ifdef CONFIG_USB_STORAGE_ISD200 | |
738 | case US_SC_ISD200: | |
739 | us->protocol_name = "ISD200 ATA/ATAPI"; | |
740 | us->proto_handler = isd200_ata_command; | |
741 | break; | |
742 | #endif | |
743 | ||
d277064e | 744 | #ifdef CONFIG_USB_STORAGE_CYPRESS_ATACB |
745 | case US_SC_CYP_ATACB: | |
746 | us->protocol_name = "Transparent SCSI with Cypress ATACB"; | |
747 | us->proto_handler = cypress_atacb_passthrough; | |
748 | break; | |
749 | #endif | |
750 | ||
1da177e4 LT |
751 | default: |
752 | return -EIO; | |
753 | } | |
754 | US_DEBUGP("Protocol: %s\n", us->protocol_name); | |
755 | return 0; | |
756 | } | |
757 | ||
758 | /* Get the pipe settings */ | |
759 | static int get_pipes(struct us_data *us) | |
760 | { | |
761 | struct usb_host_interface *altsetting = | |
762 | us->pusb_intf->cur_altsetting; | |
763 | int i; | |
764 | struct usb_endpoint_descriptor *ep; | |
765 | struct usb_endpoint_descriptor *ep_in = NULL; | |
766 | struct usb_endpoint_descriptor *ep_out = NULL; | |
767 | struct usb_endpoint_descriptor *ep_int = NULL; | |
768 | ||
769 | /* | |
1096f780 | 770 | * Find the first endpoint of each type we need. |
1da177e4 | 771 | * We are expecting a minimum of 2 endpoints - in and out (bulk). |
1096f780 | 772 | * An optional interrupt-in is OK (necessary for CBI protocol). |
1da177e4 LT |
773 | * We will ignore any others. |
774 | */ | |
775 | for (i = 0; i < altsetting->desc.bNumEndpoints; i++) { | |
776 | ep = &altsetting->endpoint[i].desc; | |
777 | ||
04720747 | 778 | if (usb_endpoint_xfer_bulk(ep)) { |
1096f780 AS |
779 | if (usb_endpoint_dir_in(ep)) { |
780 | if (!ep_in) | |
781 | ep_in = ep; | |
782 | } else { | |
783 | if (!ep_out) | |
784 | ep_out = ep; | |
785 | } | |
1da177e4 LT |
786 | } |
787 | ||
1096f780 AS |
788 | else if (usb_endpoint_is_int_in(ep)) { |
789 | if (!ep_int) | |
790 | ep_int = ep; | |
1da177e4 LT |
791 | } |
792 | } | |
793 | ||
794 | if (!ep_in || !ep_out || (us->protocol == US_PR_CBI && !ep_int)) { | |
795 | US_DEBUGP("Endpoint sanity check failed! Rejecting dev.\n"); | |
796 | return -EIO; | |
797 | } | |
798 | ||
799 | /* Calculate and store the pipe values */ | |
800 | us->send_ctrl_pipe = usb_sndctrlpipe(us->pusb_dev, 0); | |
801 | us->recv_ctrl_pipe = usb_rcvctrlpipe(us->pusb_dev, 0); | |
802 | us->send_bulk_pipe = usb_sndbulkpipe(us->pusb_dev, | |
803 | ep_out->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
804 | us->recv_bulk_pipe = usb_rcvbulkpipe(us->pusb_dev, | |
805 | ep_in->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
806 | if (ep_int) { | |
807 | us->recv_intr_pipe = usb_rcvintpipe(us->pusb_dev, | |
808 | ep_int->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
809 | us->ep_bInterval = ep_int->bInterval; | |
810 | } | |
811 | return 0; | |
812 | } | |
813 | ||
814 | /* Initialize all the dynamic resources we need */ | |
815 | static int usb_stor_acquire_resources(struct us_data *us) | |
816 | { | |
817 | int p; | |
3f13e66e | 818 | struct task_struct *th; |
1da177e4 LT |
819 | |
820 | us->current_urb = usb_alloc_urb(0, GFP_KERNEL); | |
821 | if (!us->current_urb) { | |
822 | US_DEBUGP("URB allocation failed\n"); | |
823 | return -ENOMEM; | |
824 | } | |
825 | ||
1da177e4 LT |
826 | /* Just before we start our control thread, initialize |
827 | * the device if it needs initialization */ | |
b876aef7 AS |
828 | if (us->unusual_dev->initFunction) { |
829 | p = us->unusual_dev->initFunction(us); | |
830 | if (p) | |
831 | return p; | |
832 | } | |
1da177e4 LT |
833 | |
834 | /* Start up our control thread */ | |
ed76cacb | 835 | th = kthread_run(usb_stor_control_thread, us, "usb-storage"); |
3f13e66e | 836 | if (IS_ERR(th)) { |
1da177e4 LT |
837 | printk(KERN_WARNING USB_STORAGE |
838 | "Unable to start control thread\n"); | |
3f13e66e | 839 | return PTR_ERR(th); |
1da177e4 | 840 | } |
ed76cacb | 841 | us->ctl_thread = th; |
1da177e4 LT |
842 | |
843 | return 0; | |
844 | } | |
845 | ||
846 | /* Release all our dynamic resources */ | |
847 | static void usb_stor_release_resources(struct us_data *us) | |
848 | { | |
441b62c1 | 849 | US_DEBUGP("-- %s\n", __func__); |
1da177e4 LT |
850 | |
851 | /* Tell the control thread to exit. The SCSI host must | |
543f7810 AS |
852 | * already have been removed and the DISCONNECTING flag set |
853 | * so that we won't accept any more commands. | |
1da177e4 LT |
854 | */ |
855 | US_DEBUGP("-- sending exit command to thread\n"); | |
7119e3c3 | 856 | complete(&us->cmnd_ready); |
ed76cacb AS |
857 | if (us->ctl_thread) |
858 | kthread_stop(us->ctl_thread); | |
1da177e4 LT |
859 | |
860 | /* Call the destructor routine, if it exists */ | |
861 | if (us->extra_destructor) { | |
862 | US_DEBUGP("-- calling extra_destructor()\n"); | |
863 | us->extra_destructor(us->extra); | |
864 | } | |
865 | ||
866 | /* Free the extra data and the URB */ | |
867 | kfree(us->extra); | |
868 | usb_free_urb(us->current_urb); | |
869 | } | |
870 | ||
871 | /* Dissociate from the USB device */ | |
872 | static void dissociate_dev(struct us_data *us) | |
873 | { | |
441b62c1 | 874 | US_DEBUGP("-- %s\n", __func__); |
1da177e4 LT |
875 | |
876 | /* Free the device-related DMA-mapped buffers */ | |
877 | if (us->cr) | |
878 | usb_buffer_free(us->pusb_dev, sizeof(*us->cr), us->cr, | |
879 | us->cr_dma); | |
880 | if (us->iobuf) | |
881 | usb_buffer_free(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, | |
882 | us->iobuf_dma); | |
883 | ||
884 | /* Remove our private data from the interface */ | |
885 | usb_set_intfdata(us->pusb_intf, NULL); | |
886 | } | |
887 | ||
543f7810 AS |
888 | /* First stage of disconnect processing: stop SCSI scanning, |
889 | * remove the host, and stop accepting new commands | |
890 | */ | |
77f46328 MD |
891 | static void quiesce_and_remove_host(struct us_data *us) |
892 | { | |
eecd11ed AS |
893 | struct Scsi_Host *host = us_to_host(us); |
894 | ||
543f7810 AS |
895 | /* If the device is really gone, cut short reset delays */ |
896 | if (us->pusb_dev->state == USB_STATE_NOTATTACHED) | |
897 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); | |
77f46328 | 898 | |
543f7810 AS |
899 | /* Prevent SCSI-scanning (if it hasn't started yet) |
900 | * and wait for the SCSI-scanning thread to stop. | |
901 | */ | |
902 | set_bit(US_FLIDX_DONT_SCAN, &us->dflags); | |
903 | wake_up(&us->delay_wait); | |
904 | wait_for_completion(&us->scanning_done); | |
26186ba7 | 905 | |
543f7810 AS |
906 | /* Removing the host will perform an orderly shutdown: caches |
907 | * synchronized, disks spun down, etc. | |
908 | */ | |
eecd11ed | 909 | scsi_remove_host(host); |
2f67cd5b | 910 | |
543f7810 AS |
911 | /* Prevent any new commands from being accepted and cut short |
912 | * reset delays. | |
913 | */ | |
914 | scsi_lock(host); | |
915 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); | |
916 | scsi_unlock(host); | |
917 | wake_up(&us->delay_wait); | |
77f46328 MD |
918 | } |
919 | ||
920 | /* Second stage of disconnect processing: deallocate all resources */ | |
921 | static void release_everything(struct us_data *us) | |
922 | { | |
923 | usb_stor_release_resources(us); | |
924 | dissociate_dev(us); | |
925 | ||
926 | /* Drop our reference to the host; the SCSI core will free it | |
927 | * (and "us" along with it) when the refcount becomes 0. */ | |
928 | scsi_host_put(us_to_host(us)); | |
929 | } | |
930 | ||
1da177e4 LT |
931 | /* Thread to carry out delayed SCSI-device scanning */ |
932 | static int usb_stor_scan_thread(void * __us) | |
933 | { | |
934 | struct us_data *us = (struct us_data *)__us; | |
935 | ||
1da177e4 LT |
936 | printk(KERN_DEBUG |
937 | "usb-storage: device found at %d\n", us->pusb_dev->devnum); | |
938 | ||
83144186 | 939 | set_freezable(); |
1da177e4 LT |
940 | /* Wait for the timeout to expire or for a disconnect */ |
941 | if (delay_use > 0) { | |
942 | printk(KERN_DEBUG "usb-storage: waiting for device " | |
943 | "to settle before scanning\n"); | |
e42837bc | 944 | wait_event_freezable_timeout(us->delay_wait, |
543f7810 | 945 | test_bit(US_FLIDX_DONT_SCAN, &us->dflags), |
1da177e4 | 946 | delay_use * HZ); |
1da177e4 LT |
947 | } |
948 | ||
949 | /* If the device is still connected, perform the scanning */ | |
543f7810 | 950 | if (!test_bit(US_FLIDX_DONT_SCAN, &us->dflags)) { |
b876aef7 AS |
951 | |
952 | /* For bulk-only devices, determine the max LUN value */ | |
953 | if (us->protocol == US_PR_BULK && | |
7e4d6c38 | 954 | !(us->fflags & US_FL_SINGLE_LUN)) { |
4186ecf8 | 955 | mutex_lock(&us->dev_mutex); |
b876aef7 | 956 | us->max_lun = usb_stor_Bulk_max_lun(us); |
4186ecf8 | 957 | mutex_unlock(&us->dev_mutex); |
b876aef7 | 958 | } |
1da177e4 LT |
959 | scsi_scan_host(us_to_host(us)); |
960 | printk(KERN_DEBUG "usb-storage: device scan complete\n"); | |
961 | ||
962 | /* Should we unbind if no devices were detected? */ | |
963 | } | |
964 | ||
2f67cd5b | 965 | complete_and_exit(&us->scanning_done, 0); |
1da177e4 LT |
966 | } |
967 | ||
968 | ||
969 | /* Probe to see if we can drive a newly-connected USB device */ | |
970 | static int storage_probe(struct usb_interface *intf, | |
971 | const struct usb_device_id *id) | |
972 | { | |
973 | struct Scsi_Host *host; | |
974 | struct us_data *us; | |
1da177e4 | 975 | int result; |
3f13e66e | 976 | struct task_struct *th; |
1da177e4 | 977 | |
a00828e9 PZ |
978 | if (usb_usual_check_type(id, USB_US_TYPE_STOR)) |
979 | return -ENXIO; | |
980 | ||
1da177e4 LT |
981 | US_DEBUGP("USB Mass Storage device detected\n"); |
982 | ||
983 | /* | |
984 | * Ask the SCSI layer to allocate a host structure, with extra | |
985 | * space at the end for our private us_data structure. | |
986 | */ | |
987 | host = scsi_host_alloc(&usb_stor_host_template, sizeof(*us)); | |
988 | if (!host) { | |
989 | printk(KERN_WARNING USB_STORAGE | |
990 | "Unable to allocate the scsi host\n"); | |
991 | return -ENOMEM; | |
992 | } | |
993 | ||
17f06022 RS |
994 | /* |
995 | * Allow 16-byte CDBs and thus > 2TB | |
996 | */ | |
997 | host->max_cmd_len = 16; | |
1da177e4 LT |
998 | us = host_to_us(host); |
999 | memset(us, 0, sizeof(struct us_data)); | |
4186ecf8 | 1000 | mutex_init(&(us->dev_mutex)); |
7119e3c3 | 1001 | init_completion(&us->cmnd_ready); |
1da177e4 LT |
1002 | init_completion(&(us->notify)); |
1003 | init_waitqueue_head(&us->delay_wait); | |
2f67cd5b | 1004 | init_completion(&us->scanning_done); |
1da177e4 LT |
1005 | |
1006 | /* Associate the us_data structure with the USB device */ | |
1007 | result = associate_dev(us, intf); | |
1008 | if (result) | |
1009 | goto BadDevice; | |
1010 | ||
1011 | /* | |
1012 | * Get the unusual_devs entries and the descriptors | |
1013 | * | |
1014 | * id_index is calculated in the declaration to be the index number | |
1015 | * of the match from the usb_device_id table, so we can find the | |
1016 | * corresponding entry in the private table. | |
1017 | */ | |
3c332422 DD |
1018 | result = get_device_info(us, id); |
1019 | if (result) | |
1020 | goto BadDevice; | |
1da177e4 | 1021 | |
1da177e4 LT |
1022 | /* Get the transport, protocol, and pipe settings */ |
1023 | result = get_transport(us); | |
1024 | if (result) | |
1025 | goto BadDevice; | |
1026 | result = get_protocol(us); | |
1027 | if (result) | |
1028 | goto BadDevice; | |
1029 | result = get_pipes(us); | |
1030 | if (result) | |
1031 | goto BadDevice; | |
1032 | ||
1033 | /* Acquire all the other resources and add the host */ | |
1034 | result = usb_stor_acquire_resources(us); | |
1035 | if (result) | |
1036 | goto BadDevice; | |
1037 | result = scsi_add_host(host, &intf->dev); | |
1038 | if (result) { | |
1039 | printk(KERN_WARNING USB_STORAGE | |
1040 | "Unable to add the scsi host\n"); | |
1041 | goto BadDevice; | |
1042 | } | |
1043 | ||
1044 | /* Start up the thread for delayed SCSI-device scanning */ | |
3f13e66e AS |
1045 | th = kthread_create(usb_stor_scan_thread, us, "usb-stor-scan"); |
1046 | if (IS_ERR(th)) { | |
1da177e4 LT |
1047 | printk(KERN_WARNING USB_STORAGE |
1048 | "Unable to start the device-scanning thread\n"); | |
543f7810 | 1049 | complete(&us->scanning_done); |
77f46328 | 1050 | quiesce_and_remove_host(us); |
3f13e66e | 1051 | result = PTR_ERR(th); |
1da177e4 LT |
1052 | goto BadDevice; |
1053 | } | |
1da177e4 | 1054 | |
3f13e66e | 1055 | wake_up_process(th); |
1da177e4 LT |
1056 | |
1057 | return 0; | |
1058 | ||
1059 | /* We come here if there are any problems */ | |
1060 | BadDevice: | |
1061 | US_DEBUGP("storage_probe() failed\n"); | |
77f46328 | 1062 | release_everything(us); |
1da177e4 LT |
1063 | return result; |
1064 | } | |
1065 | ||
1066 | /* Handle a disconnect event from the USB core */ | |
1067 | static void storage_disconnect(struct usb_interface *intf) | |
1068 | { | |
1069 | struct us_data *us = usb_get_intfdata(intf); | |
1070 | ||
1071 | US_DEBUGP("storage_disconnect() called\n"); | |
77f46328 MD |
1072 | quiesce_and_remove_host(us); |
1073 | release_everything(us); | |
1da177e4 LT |
1074 | } |
1075 | ||
1076 | /*********************************************************************** | |
1077 | * Initialization and registration | |
1078 | ***********************************************************************/ | |
1079 | ||
ce2596df | 1080 | static struct usb_driver usb_storage_driver = { |
ce2596df AS |
1081 | .name = "usb-storage", |
1082 | .probe = storage_probe, | |
1083 | .disconnect = storage_disconnect, | |
1084 | #ifdef CONFIG_PM | |
1085 | .suspend = storage_suspend, | |
1086 | .resume = storage_resume, | |
f07600cf | 1087 | .reset_resume = storage_reset_resume, |
ce2596df | 1088 | #endif |
47104b0d AS |
1089 | .pre_reset = storage_pre_reset, |
1090 | .post_reset = storage_post_reset, | |
ce2596df | 1091 | .id_table = storage_usb_ids, |
543f7810 | 1092 | .soft_unbind = 1, |
ce2596df AS |
1093 | }; |
1094 | ||
d4f373e5 AS |
1095 | /* Works only for digits and letters, but small and fast */ |
1096 | #define TOLOWER(x) ((x) | 0x20) | |
1097 | ||
1098 | static void __init parse_quirks(void) | |
1099 | { | |
1100 | int n, i; | |
1101 | char *p; | |
1102 | ||
1103 | if (!quirks) | |
1104 | return; | |
1105 | ||
1106 | /* Count the ':' characters to get 2 * the number of entries */ | |
1107 | n = 0; | |
1108 | for (p = quirks; *p; ++p) { | |
1109 | if (*p == ':') | |
1110 | ++n; | |
1111 | } | |
1112 | n /= 2; | |
1113 | if (n == 0) | |
1114 | return; /* Don't allocate 0 bytes */ | |
1115 | ||
1116 | quirks_list = kmalloc(n * sizeof(*quirks_list), GFP_KERNEL); | |
1117 | if (!quirks_list) | |
1118 | return; | |
1119 | ||
1120 | p = quirks; | |
1121 | quirks_end = quirks_list; | |
1122 | for (i = 0; i < n && *p; ++i) { | |
1123 | unsigned f = 0; | |
1124 | ||
1125 | /* Each entry consists of VID:PID:flags */ | |
1126 | quirks_end->vid = simple_strtoul(p, &p, 16); | |
1127 | if (*p != ':') | |
1128 | goto skip_to_next; | |
1129 | quirks_end->pid = simple_strtoul(p+1, &p, 16); | |
1130 | if (*p != ':') | |
1131 | goto skip_to_next; | |
1132 | ||
1133 | while (*++p && *p != ',') { | |
1134 | switch (TOLOWER(*p)) { | |
1135 | case 'c': | |
1136 | f |= US_FL_FIX_CAPACITY; | |
1137 | break; | |
1138 | case 'i': | |
1139 | f |= US_FL_IGNORE_DEVICE; | |
1140 | break; | |
1141 | case 'l': | |
1142 | f |= US_FL_NOT_LOCKABLE; | |
1143 | break; | |
1144 | case 'm': | |
1145 | f |= US_FL_MAX_SECTORS_64; | |
1146 | break; | |
1147 | case 'r': | |
1148 | f |= US_FL_IGNORE_RESIDUE; | |
1149 | break; | |
1150 | case 's': | |
1151 | f |= US_FL_SINGLE_LUN; | |
1152 | break; | |
1153 | case 'w': | |
1154 | f |= US_FL_NO_WP_DETECT; | |
1155 | break; | |
1156 | /* Ignore unrecognized flag characters */ | |
1157 | } | |
1158 | } | |
1159 | quirks_end->fflags = f; | |
1160 | ++quirks_end; | |
1161 | ||
1162 | skip_to_next: | |
1163 | /* Entries are separated by commas */ | |
1164 | while (*p) { | |
1165 | if (*p++ == ',') | |
1166 | break; | |
1167 | } | |
1168 | } /* for (i = 0; ...) */ | |
1169 | } | |
1170 | ||
1da177e4 LT |
1171 | static int __init usb_stor_init(void) |
1172 | { | |
1173 | int retval; | |
d4f373e5 | 1174 | |
1da177e4 | 1175 | printk(KERN_INFO "Initializing USB Mass Storage driver...\n"); |
d4f373e5 | 1176 | parse_quirks(); |
1da177e4 LT |
1177 | |
1178 | /* register the driver, return usb_register return code if error */ | |
1179 | retval = usb_register(&usb_storage_driver); | |
a00828e9 | 1180 | if (retval == 0) { |
1da177e4 | 1181 | printk(KERN_INFO "USB Mass Storage support registered.\n"); |
a00828e9 PZ |
1182 | usb_usual_set_present(USB_US_TYPE_STOR); |
1183 | } | |
1da177e4 LT |
1184 | return retval; |
1185 | } | |
1186 | ||
1187 | static void __exit usb_stor_exit(void) | |
1188 | { | |
1189 | US_DEBUGP("usb_stor_exit() called\n"); | |
1190 | ||
1191 | /* Deregister the driver | |
1192 | * This will cause disconnect() to be called for each | |
1193 | * attached unit | |
1194 | */ | |
1195 | US_DEBUGP("-- calling usb_deregister()\n"); | |
1196 | usb_deregister(&usb_storage_driver) ; | |
1197 | ||
a00828e9 | 1198 | usb_usual_clear_present(USB_US_TYPE_STOR); |
1da177e4 LT |
1199 | } |
1200 | ||
1201 | module_init(usb_stor_init); | |
1202 | module_exit(usb_stor_exit); |