Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/bluetooth/btusb.c

  1 /*
  2  *
  3  *  Generic Bluetooth USB driver
  4  *
  5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
  6  *
  7  *
  8  *  This program is free software; you can redistribute it and/or modify
  9  *  it under the terms of the GNU General Public License as published by
 10  *  the Free Software Foundation; either version 2 of the License, or
 11  *  (at your option) any later version.
 12  *
 13  *  This program is distributed in the hope that it will be useful,
 14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16  *  GNU General Public License for more details.
 17  *
 18  *  You should have received a copy of the GNU General Public License
 19  *  along with this program; if not, write to the Free Software
 20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 21  *
 22  */
 23 
 24 #include <linux/module.h>
 25 #include <linux/usb.h>
 26 #include <linux/firmware.h>
 27 
 28 #include <net/bluetooth/bluetooth.h>
 29 #include <net/bluetooth/hci_core.h>
 30 
 31 #define VERSION "0.6"
 32 
 33 static bool ignore_dga;
 34 static bool ignore_csr;
 35 static bool ignore_sniffer;
 36 static bool disable_scofix;
 37 static bool force_scofix;
 38 
 39 static bool reset = 1;
 40 
 41 static struct usb_driver btusb_driver;
 42 
 43 #define BTUSB_IGNORE            0x01
 44 #define BTUSB_DIGIANSWER        0x02
 45 #define BTUSB_CSR               0x04
 46 #define BTUSB_SNIFFER           0x08
 47 #define BTUSB_BCM92035          0x10
 48 #define BTUSB_BROKEN_ISOC       0x20
 49 #define BTUSB_WRONG_SCO_MTU     0x40
 50 #define BTUSB_ATH3012           0x80
 51 #define BTUSB_INTEL             0x100
 52 #define BTUSB_BCM_PATCHRAM      0x200
 53 
 54 static const struct usb_device_id btusb_table[] = {
 55         /* Generic Bluetooth USB device */
 56         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
 57 
 58         /* Apple-specific (Broadcom) devices */
 59         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
 60 
 61         /* MediaTek MT76x0E */
 62         { USB_DEVICE(0x0e8d, 0x763f) },
 63 
 64         /* Broadcom SoftSailing reporting vendor specific */
 65         { USB_DEVICE(0x0a5c, 0x21e1) },
 66 
 67         /* Apple MacBookPro 7,1 */
 68         { USB_DEVICE(0x05ac, 0x8213) },
 69 
 70         /* Apple iMac11,1 */
 71         { USB_DEVICE(0x05ac, 0x8215) },
 72 
 73         /* Apple MacBookPro6,2 */
 74         { USB_DEVICE(0x05ac, 0x8218) },
 75 
 76         /* Apple MacBookAir3,1, MacBookAir3,2 */
 77         { USB_DEVICE(0x05ac, 0x821b) },
 78 
 79         /* Apple MacBookAir4,1 */
 80         { USB_DEVICE(0x05ac, 0x821f) },
 81 
 82         /* Apple MacBookPro8,2 */
 83         { USB_DEVICE(0x05ac, 0x821a) },
 84 
 85         /* Apple MacMini5,1 */
 86         { USB_DEVICE(0x05ac, 0x8281) },
 87 
 88         /* AVM BlueFRITZ! USB v2.0 */
 89         { USB_DEVICE(0x057c, 0x3800) },
 90 
 91         /* Bluetooth Ultraport Module from IBM */
 92         { USB_DEVICE(0x04bf, 0x030a) },
 93 
 94         /* ALPS Modules with non-standard id */
 95         { USB_DEVICE(0x044e, 0x3001) },
 96         { USB_DEVICE(0x044e, 0x3002) },
 97 
 98         /* Ericsson with non-standard id */
 99         { USB_DEVICE(0x0bdb, 0x1002) },
100 
101         /* Canyon CN-BTU1 with HID interfaces */
102         { USB_DEVICE(0x0c10, 0x0000) },
103 
104         /* Broadcom BCM20702A0 */
105         { USB_DEVICE(0x0489, 0xe042) },
106         { USB_DEVICE(0x04ca, 0x2003) },
107         { USB_DEVICE(0x0b05, 0x17b5) },
108         { USB_DEVICE(0x0b05, 0x17cb) },
109         { USB_DEVICE(0x413c, 0x8197) },
110 
111         /* Foxconn - Hon Hai */
112         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
113 
114         /* Broadcom devices with vendor specific id */
115         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
116           .driver_info = BTUSB_BCM_PATCHRAM },
117 
118         /* Belkin F8065bf - Broadcom based */
119         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
120 
121         /* IMC Networks - Broadcom based */
122         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
123 
124         { }     /* Terminating entry */
125 };
126 
127 MODULE_DEVICE_TABLE(usb, btusb_table);
128 
129 static const struct usb_device_id blacklist_table[] = {
130         /* CSR BlueCore devices */
131         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
132 
133         /* Broadcom BCM2033 without firmware */
134         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
135 
136         /* Atheros 3011 with sflash firmware */
137         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
138         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
139         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
140         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
141         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
142         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
143 
144         /* Atheros AR9285 Malbec with sflash firmware */
145         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
146 
147         /* Atheros 3012 with sflash firmware */
148         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
149         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
150         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
151         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
152         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
153         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
154         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
155         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
156         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
157         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
158         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
159         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
160         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
161         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
162         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
163         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
164         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
165         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
166         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
167         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
168         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
169         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
170         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
171         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
172         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
173         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
174         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
175         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
176         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
177         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
178 
179         /* Atheros AR5BBU12 with sflash firmware */
180         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
181 
182         /* Atheros AR5BBU12 with sflash firmware */
183         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
184         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
185 
186         /* Broadcom BCM2035 */
187         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
188         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
189         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
190 
191         /* Broadcom BCM2045 */
192         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
193         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
194 
195         /* IBM/Lenovo ThinkPad with Broadcom chip */
196         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
197         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
198 
199         /* HP laptop with Broadcom chip */
200         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
201 
202         /* Dell laptop with Broadcom chip */
203         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
204 
205         /* Dell Wireless 370 and 410 devices */
206         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
207         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
208 
209         /* Belkin F8T012 and F8T013 devices */
210         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
211         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
212 
213         /* Asus WL-BTD202 device */
214         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
215 
216         /* Kensington Bluetooth USB adapter */
217         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
218 
219         /* RTX Telecom based adapters with buggy SCO support */
220         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
221         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
222 
223         /* CONWISE Technology based adapters with buggy SCO support */
224         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
225 
226         /* Digianswer devices */
227         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
228         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
229 
230         /* CSR BlueCore Bluetooth Sniffer */
231         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
232 
233         /* Frontline ComProbe Bluetooth Sniffer */
234         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
235 
236         /* Intel Bluetooth device */
237         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
238         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
239 
240         { }     /* Terminating entry */
241 };
242 
243 #define BTUSB_MAX_ISOC_FRAMES   10
244 
245 #define BTUSB_INTR_RUNNING      0
246 #define BTUSB_BULK_RUNNING      1
247 #define BTUSB_ISOC_RUNNING      2
248 #define BTUSB_SUSPENDING        3
249 #define BTUSB_DID_ISO_RESUME    4
250 
251 struct btusb_data {
252         struct hci_dev       *hdev;
253         struct usb_device    *udev;
254         struct usb_interface *intf;
255         struct usb_interface *isoc;
256 
257         spinlock_t lock;
258 
259         unsigned long flags;
260 
261         struct work_struct work;
262         struct work_struct waker;
263 
264         struct usb_anchor tx_anchor;
265         struct usb_anchor intr_anchor;
266         struct usb_anchor bulk_anchor;
267         struct usb_anchor isoc_anchor;
268         struct usb_anchor deferred;
269         int tx_in_flight;
270         spinlock_t txlock;
271 
272         struct usb_endpoint_descriptor *intr_ep;
273         struct usb_endpoint_descriptor *bulk_tx_ep;
274         struct usb_endpoint_descriptor *bulk_rx_ep;
275         struct usb_endpoint_descriptor *isoc_tx_ep;
276         struct usb_endpoint_descriptor *isoc_rx_ep;
277 
278         __u8 cmdreq_type;
279 
280         unsigned int sco_num;
281         int isoc_altsetting;
282         int suspend_count;
283 };
284 
285 static int inc_tx(struct btusb_data *data)
286 {
287         unsigned long flags;
288         int rv;
289 
290         spin_lock_irqsave(&data->txlock, flags);
291         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
292         if (!rv)
293                 data->tx_in_flight++;
294         spin_unlock_irqrestore(&data->txlock, flags);
295 
296         return rv;
297 }
298 
299 static void btusb_intr_complete(struct urb *urb)
300 {
301         struct hci_dev *hdev = urb->context;
302         struct btusb_data *data = hci_get_drvdata(hdev);
303         int err;
304 
305         BT_DBG("%s urb %p status %d count %d", hdev->name,
306                                         urb, urb->status, urb->actual_length);
307 
308         if (!test_bit(HCI_RUNNING, &hdev->flags))
309                 return;
310 
311         if (urb->status == 0) {
312                 hdev->stat.byte_rx += urb->actual_length;
313 
314                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
315                                                 urb->transfer_buffer,
316                                                 urb->actual_length) < 0) {
317                         BT_ERR("%s corrupted event packet", hdev->name);
318                         hdev->stat.err_rx++;
319                 }
320         }
321 
322         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
323                 return;
324 
325         usb_mark_last_busy(data->udev);
326         usb_anchor_urb(urb, &data->intr_anchor);
327 
328         err = usb_submit_urb(urb, GFP_ATOMIC);
329         if (err < 0) {
330                 /* -EPERM: urb is being killed;
331                  * -ENODEV: device got disconnected */
332                 if (err != -EPERM && err != -ENODEV)
333                         BT_ERR("%s urb %p failed to resubmit (%d)",
334                                                 hdev->name, urb, -err);
335                 usb_unanchor_urb(urb);
336         }
337 }
338 
339 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
340 {
341         struct btusb_data *data = hci_get_drvdata(hdev);
342         struct urb *urb;
343         unsigned char *buf;
344         unsigned int pipe;
345         int err, size;
346 
347         BT_DBG("%s", hdev->name);
348 
349         if (!data->intr_ep)
350                 return -ENODEV;
351 
352         urb = usb_alloc_urb(0, mem_flags);
353         if (!urb)
354                 return -ENOMEM;
355 
356         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
357 
358         buf = kmalloc(size, mem_flags);
359         if (!buf) {
360                 usb_free_urb(urb);
361                 return -ENOMEM;
362         }
363 
364         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
365 
366         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
367                                                 btusb_intr_complete, hdev,
368                                                 data->intr_ep->bInterval);
369 
370         urb->transfer_flags |= URB_FREE_BUFFER;
371 
372         usb_anchor_urb(urb, &data->intr_anchor);
373 
374         err = usb_submit_urb(urb, mem_flags);
375         if (err < 0) {
376                 if (err != -EPERM && err != -ENODEV)
377                         BT_ERR("%s urb %p submission failed (%d)",
378                                                 hdev->name, urb, -err);
379                 usb_unanchor_urb(urb);
380         }
381 
382         usb_free_urb(urb);
383 
384         return err;
385 }
386 
387 static void btusb_bulk_complete(struct urb *urb)
388 {
389         struct hci_dev *hdev = urb->context;
390         struct btusb_data *data = hci_get_drvdata(hdev);
391         int err;
392 
393         BT_DBG("%s urb %p status %d count %d", hdev->name,
394                                         urb, urb->status, urb->actual_length);
395 
396         if (!test_bit(HCI_RUNNING, &hdev->flags))
397                 return;
398 
399         if (urb->status == 0) {
400                 hdev->stat.byte_rx += urb->actual_length;
401 
402                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
403                                                 urb->transfer_buffer,
404                                                 urb->actual_length) < 0) {
405                         BT_ERR("%s corrupted ACL packet", hdev->name);
406                         hdev->stat.err_rx++;
407                 }
408         }
409 
410         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
411                 return;
412 
413         usb_anchor_urb(urb, &data->bulk_anchor);
414         usb_mark_last_busy(data->udev);
415 
416         err = usb_submit_urb(urb, GFP_ATOMIC);
417         if (err < 0) {
418                 /* -EPERM: urb is being killed;
419                  * -ENODEV: device got disconnected */
420                 if (err != -EPERM && err != -ENODEV)
421                         BT_ERR("%s urb %p failed to resubmit (%d)",
422                                                 hdev->name, urb, -err);
423                 usb_unanchor_urb(urb);
424         }
425 }
426 
427 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
428 {
429         struct btusb_data *data = hci_get_drvdata(hdev);
430         struct urb *urb;
431         unsigned char *buf;
432         unsigned int pipe;
433         int err, size = HCI_MAX_FRAME_SIZE;
434 
435         BT_DBG("%s", hdev->name);
436 
437         if (!data->bulk_rx_ep)
438                 return -ENODEV;
439 
440         urb = usb_alloc_urb(0, mem_flags);
441         if (!urb)
442                 return -ENOMEM;
443 
444         buf = kmalloc(size, mem_flags);
445         if (!buf) {
446                 usb_free_urb(urb);
447                 return -ENOMEM;
448         }
449 
450         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
451 
452         usb_fill_bulk_urb(urb, data->udev, pipe,
453                                         buf, size, btusb_bulk_complete, hdev);
454 
455         urb->transfer_flags |= URB_FREE_BUFFER;
456 
457         usb_mark_last_busy(data->udev);
458         usb_anchor_urb(urb, &data->bulk_anchor);
459 
460         err = usb_submit_urb(urb, mem_flags);
461         if (err < 0) {
462                 if (err != -EPERM && err != -ENODEV)
463                         BT_ERR("%s urb %p submission failed (%d)",
464                                                 hdev->name, urb, -err);
465                 usb_unanchor_urb(urb);
466         }
467 
468         usb_free_urb(urb);
469 
470         return err;
471 }
472 
473 static void btusb_isoc_complete(struct urb *urb)
474 {
475         struct hci_dev *hdev = urb->context;
476         struct btusb_data *data = hci_get_drvdata(hdev);
477         int i, err;
478 
479         BT_DBG("%s urb %p status %d count %d", hdev->name,
480                                         urb, urb->status, urb->actual_length);
481 
482         if (!test_bit(HCI_RUNNING, &hdev->flags))
483                 return;
484 
485         if (urb->status == 0) {
486                 for (i = 0; i < urb->number_of_packets; i++) {
487                         unsigned int offset = urb->iso_frame_desc[i].offset;
488                         unsigned int length = urb->iso_frame_desc[i].actual_length;
489 
490                         if (urb->iso_frame_desc[i].status)
491                                 continue;
492 
493                         hdev->stat.byte_rx += length;
494 
495                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
496                                                 urb->transfer_buffer + offset,
497                                                                 length) < 0) {
498                                 BT_ERR("%s corrupted SCO packet", hdev->name);
499                                 hdev->stat.err_rx++;
500                         }
501                 }
502         }
503 
504         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
505                 return;
506 
507         usb_anchor_urb(urb, &data->isoc_anchor);
508 
509         err = usb_submit_urb(urb, GFP_ATOMIC);
510         if (err < 0) {
511                 /* -EPERM: urb is being killed;
512                  * -ENODEV: device got disconnected */
513                 if (err != -EPERM && err != -ENODEV)
514                         BT_ERR("%s urb %p failed to resubmit (%d)",
515                                                 hdev->name, urb, -err);
516                 usb_unanchor_urb(urb);
517         }
518 }
519 
520 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
521 {
522         int i, offset = 0;
523 
524         BT_DBG("len %d mtu %d", len, mtu);
525 
526         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
527                                         i++, offset += mtu, len -= mtu) {
528                 urb->iso_frame_desc[i].offset = offset;
529                 urb->iso_frame_desc[i].length = mtu;
530         }
531 
532         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
533                 urb->iso_frame_desc[i].offset = offset;
534                 urb->iso_frame_desc[i].length = len;
535                 i++;
536         }
537 
538         urb->number_of_packets = i;
539 }
540 
541 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
542 {
543         struct btusb_data *data = hci_get_drvdata(hdev);
544         struct urb *urb;
545         unsigned char *buf;
546         unsigned int pipe;
547         int err, size;
548 
549         BT_DBG("%s", hdev->name);
550 
551         if (!data->isoc_rx_ep)
552                 return -ENODEV;
553 
554         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
555         if (!urb)
556                 return -ENOMEM;
557 
558         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
559                                                 BTUSB_MAX_ISOC_FRAMES;
560 
561         buf = kmalloc(size, mem_flags);
562         if (!buf) {
563                 usb_free_urb(urb);
564                 return -ENOMEM;
565         }
566 
567         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
568 
569         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
570                                 hdev, data->isoc_rx_ep->bInterval);
571 
572         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
573 
574         __fill_isoc_descriptor(urb, size,
575                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
576 
577         usb_anchor_urb(urb, &data->isoc_anchor);
578 
579         err = usb_submit_urb(urb, mem_flags);
580         if (err < 0) {
581                 if (err != -EPERM && err != -ENODEV)
582                         BT_ERR("%s urb %p submission failed (%d)",
583                                                 hdev->name, urb, -err);
584                 usb_unanchor_urb(urb);
585         }
586 
587         usb_free_urb(urb);
588 
589         return err;
590 }
591 
592 static void btusb_tx_complete(struct urb *urb)
593 {
594         struct sk_buff *skb = urb->context;
595         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
596         struct btusb_data *data = hci_get_drvdata(hdev);
597 
598         BT_DBG("%s urb %p status %d count %d", hdev->name,
599                                         urb, urb->status, urb->actual_length);
600 
601         if (!test_bit(HCI_RUNNING, &hdev->flags))
602                 goto done;
603 
604         if (!urb->status)
605                 hdev->stat.byte_tx += urb->transfer_buffer_length;
606         else
607                 hdev->stat.err_tx++;
608 
609 done:
610         spin_lock(&data->txlock);
611         data->tx_in_flight--;
612         spin_unlock(&data->txlock);
613 
614         kfree(urb->setup_packet);
615 
616         kfree_skb(skb);
617 }
618 
619 static void btusb_isoc_tx_complete(struct urb *urb)
620 {
621         struct sk_buff *skb = urb->context;
622         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
623 
624         BT_DBG("%s urb %p status %d count %d", hdev->name,
625                                         urb, urb->status, urb->actual_length);
626 
627         if (!test_bit(HCI_RUNNING, &hdev->flags))
628                 goto done;
629 
630         if (!urb->status)
631                 hdev->stat.byte_tx += urb->transfer_buffer_length;
632         else
633                 hdev->stat.err_tx++;
634 
635 done:
636         kfree(urb->setup_packet);
637 
638         kfree_skb(skb);
639 }
640 
641 static int btusb_open(struct hci_dev *hdev)
642 {
643         struct btusb_data *data = hci_get_drvdata(hdev);
644         int err;
645 
646         BT_DBG("%s", hdev->name);
647 
648         err = usb_autopm_get_interface(data->intf);
649         if (err < 0)
650                 return err;
651 
652         data->intf->needs_remote_wakeup = 1;
653 
654         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
655                 goto done;
656 
657         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
658                 goto done;
659 
660         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
661         if (err < 0)
662                 goto failed;
663 
664         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
665         if (err < 0) {
666                 usb_kill_anchored_urbs(&data->intr_anchor);
667                 goto failed;
668         }
669 
670         set_bit(BTUSB_BULK_RUNNING, &data->flags);
671         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
672 
673 done:
674         usb_autopm_put_interface(data->intf);
675         return 0;
676 
677 failed:
678         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
679         clear_bit(HCI_RUNNING, &hdev->flags);
680         usb_autopm_put_interface(data->intf);
681         return err;
682 }
683 
684 static void btusb_stop_traffic(struct btusb_data *data)
685 {
686         usb_kill_anchored_urbs(&data->intr_anchor);
687         usb_kill_anchored_urbs(&data->bulk_anchor);
688         usb_kill_anchored_urbs(&data->isoc_anchor);
689 }
690 
691 static int btusb_close(struct hci_dev *hdev)
692 {
693         struct btusb_data *data = hci_get_drvdata(hdev);
694         int err;
695 
696         BT_DBG("%s", hdev->name);
697 
698         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
699                 return 0;
700 
701         cancel_work_sync(&data->work);
702         cancel_work_sync(&data->waker);
703 
704         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
705         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
706         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
707 
708         btusb_stop_traffic(data);
709         err = usb_autopm_get_interface(data->intf);
710         if (err < 0)
711                 goto failed;
712 
713         data->intf->needs_remote_wakeup = 0;
714         usb_autopm_put_interface(data->intf);
715 
716 failed:
717         usb_scuttle_anchored_urbs(&data->deferred);
718         return 0;
719 }
720 
721 static int btusb_flush(struct hci_dev *hdev)
722 {
723         struct btusb_data *data = hci_get_drvdata(hdev);
724 
725         BT_DBG("%s", hdev->name);
726 
727         usb_kill_anchored_urbs(&data->tx_anchor);
728 
729         return 0;
730 }
731 
732 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
733 {
734         struct btusb_data *data = hci_get_drvdata(hdev);
735         struct usb_ctrlrequest *dr;
736         struct urb *urb;
737         unsigned int pipe;
738         int err;
739 
740         BT_DBG("%s", hdev->name);
741 
742         if (!test_bit(HCI_RUNNING, &hdev->flags))
743                 return -EBUSY;
744 
745         skb->dev = (void *) hdev;
746 
747         switch (bt_cb(skb)->pkt_type) {
748         case HCI_COMMAND_PKT:
749                 urb = usb_alloc_urb(0, GFP_ATOMIC);
750                 if (!urb)
751                         return -ENOMEM;
752 
753                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
754                 if (!dr) {
755                         usb_free_urb(urb);
756                         return -ENOMEM;
757                 }
758 
759                 dr->bRequestType = data->cmdreq_type;
760                 dr->bRequest     = 0;
761                 dr->wIndex       = 0;
762                 dr->wValue       = 0;
763                 dr->wLength      = __cpu_to_le16(skb->len);
764 
765                 pipe = usb_sndctrlpipe(data->udev, 0x00);
766 
767                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
768                                 skb->data, skb->len, btusb_tx_complete, skb);
769 
770                 hdev->stat.cmd_tx++;
771                 break;
772 
773         case HCI_ACLDATA_PKT:
774                 if (!data->bulk_tx_ep)
775                         return -ENODEV;
776 
777                 urb = usb_alloc_urb(0, GFP_ATOMIC);
778                 if (!urb)
779                         return -ENOMEM;
780 
781                 pipe = usb_sndbulkpipe(data->udev,
782                                         data->bulk_tx_ep->bEndpointAddress);
783 
784                 usb_fill_bulk_urb(urb, data->udev, pipe,
785                                 skb->data, skb->len, btusb_tx_complete, skb);
786 
787                 hdev->stat.acl_tx++;
788                 break;
789 
790         case HCI_SCODATA_PKT:
791                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
792                         return -ENODEV;
793 
794                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
795                 if (!urb)
796                         return -ENOMEM;
797 
798                 pipe = usb_sndisocpipe(data->udev,
799                                         data->isoc_tx_ep->bEndpointAddress);
800 
801                 usb_fill_int_urb(urb, data->udev, pipe,
802                                 skb->data, skb->len, btusb_isoc_tx_complete,
803                                 skb, data->isoc_tx_ep->bInterval);
804 
805                 urb->transfer_flags  = URB_ISO_ASAP;
806 
807                 __fill_isoc_descriptor(urb, skb->len,
808                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
809 
810                 hdev->stat.sco_tx++;
811                 goto skip_waking;
812 
813         default:
814                 return -EILSEQ;
815         }
816 
817         err = inc_tx(data);
818         if (err) {
819                 usb_anchor_urb(urb, &data->deferred);
820                 schedule_work(&data->waker);
821                 err = 0;
822                 goto done;
823         }
824 
825 skip_waking:
826         usb_anchor_urb(urb, &data->tx_anchor);
827 
828         err = usb_submit_urb(urb, GFP_ATOMIC);
829         if (err < 0) {
830                 if (err != -EPERM && err != -ENODEV)
831                         BT_ERR("%s urb %p submission failed (%d)",
832                                                 hdev->name, urb, -err);
833                 kfree(urb->setup_packet);
834                 usb_unanchor_urb(urb);
835         } else {
836                 usb_mark_last_busy(data->udev);
837         }
838 
839 done:
840         usb_free_urb(urb);
841         return err;
842 }
843 
844 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
845 {
846         struct btusb_data *data = hci_get_drvdata(hdev);
847 
848         BT_DBG("%s evt %d", hdev->name, evt);
849 
850         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
851                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
852                 schedule_work(&data->work);
853         }
854 }
855 
856 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
857 {
858         struct btusb_data *data = hci_get_drvdata(hdev);
859         struct usb_interface *intf = data->isoc;
860         struct usb_endpoint_descriptor *ep_desc;
861         int i, err;
862 
863         if (!data->isoc)
864                 return -ENODEV;
865 
866         err = usb_set_interface(data->udev, 1, altsetting);
867         if (err < 0) {
868                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
869                 return err;
870         }
871 
872         data->isoc_altsetting = altsetting;
873 
874         data->isoc_tx_ep = NULL;
875         data->isoc_rx_ep = NULL;
876 
877         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
878                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
879 
880                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
881                         data->isoc_tx_ep = ep_desc;
882                         continue;
883                 }
884 
885                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
886                         data->isoc_rx_ep = ep_desc;
887                         continue;
888                 }
889         }
890 
891         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
892                 BT_ERR("%s invalid SCO descriptors", hdev->name);
893                 return -ENODEV;
894         }
895 
896         return 0;
897 }
898 
899 static void btusb_work(struct work_struct *work)
900 {
901         struct btusb_data *data = container_of(work, struct btusb_data, work);
902         struct hci_dev *hdev = data->hdev;
903         int new_alts;
904         int err;
905 
906         if (data->sco_num > 0) {
907                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
908                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
909                         if (err < 0) {
910                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
911                                 usb_kill_anchored_urbs(&data->isoc_anchor);
912                                 return;
913                         }
914 
915                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
916                 }
917 
918                 if (hdev->voice_setting & 0x0020) {
919                         static const int alts[3] = { 2, 4, 5 };
920                         new_alts = alts[data->sco_num - 1];
921                 } else {
922                         new_alts = data->sco_num;
923                 }
924 
925                 if (data->isoc_altsetting != new_alts) {
926                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
927                         usb_kill_anchored_urbs(&data->isoc_anchor);
928 
929                         if (__set_isoc_interface(hdev, new_alts) < 0)
930                                 return;
931                 }
932 
933                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
934                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
935                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
936                         else
937                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
938                 }
939         } else {
940                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
941                 usb_kill_anchored_urbs(&data->isoc_anchor);
942 
943                 __set_isoc_interface(hdev, 0);
944                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
945                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
946         }
947 }
948 
949 static void btusb_waker(struct work_struct *work)
950 {
951         struct btusb_data *data = container_of(work, struct btusb_data, waker);
952         int err;
953 
954         err = usb_autopm_get_interface(data->intf);
955         if (err < 0)
956                 return;
957 
958         usb_autopm_put_interface(data->intf);
959 }
960 
961 static int btusb_setup_bcm92035(struct hci_dev *hdev)
962 {
963         struct sk_buff *skb;
964         u8 val = 0x00;
965 
966         BT_DBG("%s", hdev->name);
967 
968         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
969         if (IS_ERR(skb))
970                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
971         else
972                 kfree_skb(skb);
973 
974         return 0;
975 }
976 
977 static int btusb_setup_csr(struct hci_dev *hdev)
978 {
979         struct hci_rp_read_local_version *rp;
980         struct sk_buff *skb;
981         int ret;
982 
983         BT_DBG("%s", hdev->name);
984 
985         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
986                              HCI_INIT_TIMEOUT);
987         if (IS_ERR(skb)) {
988                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
989                 return -PTR_ERR(skb);
990         }
991 
992         rp = (struct hci_rp_read_local_version *) skb->data;
993 
994         if (!rp->status) {
995                 if (le16_to_cpu(rp->manufacturer) != 10) {
996                         /* Clear the reset quirk since this is not an actual
997                          * early Bluetooth 1.1 device from CSR.
998                          */
999                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1000 
1001                         /* These fake CSR controllers have all a broken
1002                          * stored link key handling and so just disable it.
1003                          */
1004                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1005                                 &hdev->quirks);
1006                 }
1007         }
1008 
1009         ret = -bt_to_errno(rp->status);
1010 
1011         kfree_skb(skb);
1012 
1013         return ret;
1014 }
1015 
1016 struct intel_version {
1017         u8 status;
1018         u8 hw_platform;
1019         u8 hw_variant;
1020         u8 hw_revision;
1021         u8 fw_variant;
1022         u8 fw_revision;
1023         u8 fw_build_num;
1024         u8 fw_build_ww;
1025         u8 fw_build_yy;
1026         u8 fw_patch_num;
1027 } __packed;
1028 
1029 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1030                                                 struct intel_version *ver)
1031 {
1032         const struct firmware *fw;
1033         char fwname[64];
1034         int ret;
1035 
1036         snprintf(fwname, sizeof(fwname),
1037                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1038                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1039                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1040                  ver->fw_build_ww, ver->fw_build_yy);
1041 
1042         ret = request_firmware(&fw, fwname, &hdev->dev);
1043         if (ret < 0) {
1044                 if (ret == -EINVAL) {
1045                         BT_ERR("%s Intel firmware file request failed (%d)",
1046                                hdev->name, ret);
1047                         return NULL;
1048                 }
1049 
1050                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1051                        hdev->name, fwname, ret);
1052 
1053                 /* If the correct firmware patch file is not found, use the
1054                  * default firmware patch file instead
1055                  */
1056                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1057                          ver->hw_platform, ver->hw_variant);
1058                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1059                         BT_ERR("%s failed to open default Intel fw file: %s",
1060                                hdev->name, fwname);
1061                         return NULL;
1062                 }
1063         }
1064 
1065         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1066 
1067         return fw;
1068 }
1069 
1070 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1071                                       const struct firmware *fw,
1072                                       const u8 **fw_ptr, int *disable_patch)
1073 {
1074         struct sk_buff *skb;
1075         struct hci_command_hdr *cmd;
1076         const u8 *cmd_param;
1077         struct hci_event_hdr *evt = NULL;
1078         const u8 *evt_param = NULL;
1079         int remain = fw->size - (*fw_ptr - fw->data);
1080 
1081         /* The first byte indicates the types of the patch command or event.
1082          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1083          * in the current firmware buffer doesn't start with 0x01 or
1084          * the size of remain buffer is smaller than HCI command header,
1085          * the firmware file is corrupted and it should stop the patching
1086          * process.
1087          */
1088         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1089                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1090                 return -EINVAL;
1091         }
1092         (*fw_ptr)++;
1093         remain--;
1094 
1095         cmd = (struct hci_command_hdr *)(*fw_ptr);
1096         *fw_ptr += sizeof(*cmd);
1097         remain -= sizeof(*cmd);
1098 
1099         /* Ensure that the remain firmware data is long enough than the length
1100          * of command parameter. If not, the firmware file is corrupted.
1101          */
1102         if (remain < cmd->plen) {
1103                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1104                 return -EFAULT;
1105         }
1106 
1107         /* If there is a command that loads a patch in the firmware
1108          * file, then enable the patch upon success, otherwise just
1109          * disable the manufacturer mode, for example patch activation
1110          * is not required when the default firmware patch file is used
1111          * because there are no patch data to load.
1112          */
1113         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1114                 *disable_patch = 0;
1115 
1116         cmd_param = *fw_ptr;
1117         *fw_ptr += cmd->plen;
1118         remain -= cmd->plen;
1119 
1120         /* This reads the expected events when the above command is sent to the
1121          * device. Some vendor commands expects more than one events, for
1122          * example command status event followed by vendor specific event.
1123          * For this case, it only keeps the last expected event. so the command
1124          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1125          * last expected event.
1126          */
1127         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1128                 (*fw_ptr)++;
1129                 remain--;
1130 
1131                 evt = (struct hci_event_hdr *)(*fw_ptr);
1132                 *fw_ptr += sizeof(*evt);
1133                 remain -= sizeof(*evt);
1134 
1135                 if (remain < evt->plen) {
1136                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1137                                hdev->name);
1138                         return -EFAULT;
1139                 }
1140 
1141                 evt_param = *fw_ptr;
1142                 *fw_ptr += evt->plen;
1143                 remain -= evt->plen;
1144         }
1145 
1146         /* Every HCI commands in the firmware file has its correspond event.
1147          * If event is not found or remain is smaller than zero, the firmware
1148          * file is corrupted.
1149          */
1150         if (!evt || !evt_param || remain < 0) {
1151                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1152                 return -EFAULT;
1153         }
1154 
1155         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1156                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1157         if (IS_ERR(skb)) {
1158                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1159                        hdev->name, cmd->opcode, PTR_ERR(skb));
1160                 return PTR_ERR(skb);
1161         }
1162 
1163         /* It ensures that the returned event matches the event data read from
1164          * the firmware file. At fist, it checks the length and then
1165          * the contents of the event.
1166          */
1167         if (skb->len != evt->plen) {
1168                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1169                        le16_to_cpu(cmd->opcode));
1170                 kfree_skb(skb);
1171                 return -EFAULT;
1172         }
1173 
1174         if (memcmp(skb->data, evt_param, evt->plen)) {
1175                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1176                        hdev->name, le16_to_cpu(cmd->opcode));
1177                 kfree_skb(skb);
1178                 return -EFAULT;
1179         }
1180         kfree_skb(skb);
1181 
1182         return 0;
1183 }
1184 
1185 static int btusb_setup_intel(struct hci_dev *hdev)
1186 {
1187         struct sk_buff *skb;
1188         const struct firmware *fw;
1189         const u8 *fw_ptr;
1190         int disable_patch;
1191         struct intel_version *ver;
1192 
1193         const u8 mfg_enable[] = { 0x01, 0x00 };
1194         const u8 mfg_disable[] = { 0x00, 0x00 };
1195         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1196         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1197 
1198         BT_DBG("%s", hdev->name);
1199 
1200         /* The controller has a bug with the first HCI command sent to it
1201          * returning number of completed commands as zero. This would stall the
1202          * command processing in the Bluetooth core.
1203          *
1204          * As a workaround, send HCI Reset command first which will reset the
1205          * number of completed commands and allow normal command processing
1206          * from now on.
1207          */
1208         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1209         if (IS_ERR(skb)) {
1210                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1211                        hdev->name, PTR_ERR(skb));
1212                 return PTR_ERR(skb);
1213         }
1214         kfree_skb(skb);
1215 
1216         /* Read Intel specific controller version first to allow selection of
1217          * which firmware file to load.
1218          *
1219          * The returned information are hardware variant and revision plus
1220          * firmware variant, revision and build number.
1221          */
1222         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1223         if (IS_ERR(skb)) {
1224                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1225                        hdev->name, PTR_ERR(skb));
1226                 return PTR_ERR(skb);
1227         }
1228 
1229         if (skb->len != sizeof(*ver)) {
1230                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1231                 kfree_skb(skb);
1232                 return -EIO;
1233         }
1234 
1235         ver = (struct intel_version *)skb->data;
1236         if (ver->status) {
1237                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1238                        ver->status);
1239                 kfree_skb(skb);
1240                 return -bt_to_errno(ver->status);
1241         }
1242 
1243         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1244                 hdev->name, ver->hw_platform, ver->hw_variant,
1245                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1246                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1247                 ver->fw_patch_num);
1248 
1249         /* fw_patch_num indicates the version of patch the device currently
1250          * have. If there is no patch data in the device, it is always 0x00.
1251          * So, if it is other than 0x00, no need to patch the deivce again.
1252          */
1253         if (ver->fw_patch_num) {
1254                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1255                         hdev->name, ver->fw_patch_num);
1256                 kfree_skb(skb);
1257                 return 0;
1258         }
1259 
1260         /* Opens the firmware patch file based on the firmware version read
1261          * from the controller. If it fails to open the matching firmware
1262          * patch file, it tries to open the default firmware patch file.
1263          * If no patch file is found, allow the device to operate without
1264          * a patch.
1265          */
1266         fw = btusb_setup_intel_get_fw(hdev, ver);
1267         if (!fw) {
1268                 kfree_skb(skb);
1269                 return 0;
1270         }
1271         fw_ptr = fw->data;
1272 
1273         /* This Intel specific command enables the manufacturer mode of the
1274          * controller.
1275          *
1276          * Only while this mode is enabled, the driver can download the
1277          * firmware patch data and configuration parameters.
1278          */
1279         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1280         if (IS_ERR(skb)) {
1281                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1282                        hdev->name, PTR_ERR(skb));
1283                 release_firmware(fw);
1284                 return PTR_ERR(skb);
1285         }
1286 
1287         if (skb->data[0]) {
1288                 u8 evt_status = skb->data[0];
1289                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1290                        hdev->name, evt_status);
1291                 kfree_skb(skb);
1292                 release_firmware(fw);
1293                 return -bt_to_errno(evt_status);
1294         }
1295         kfree_skb(skb);
1296 
1297         disable_patch = 1;
1298 
1299         /* The firmware data file consists of list of Intel specific HCI
1300          * commands and its expected events. The first byte indicates the
1301          * type of the message, either HCI command or HCI event.
1302          *
1303          * It reads the command and its expected event from the firmware file,
1304          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1305          * the returned event is compared with the event read from the firmware
1306          * file and it will continue until all the messages are downloaded to
1307          * the controller.
1308          *
1309          * Once the firmware patching is completed successfully,
1310          * the manufacturer mode is disabled with reset and activating the
1311          * downloaded patch.
1312          *
1313          * If the firmware patching fails, the manufacturer mode is
1314          * disabled with reset and deactivating the patch.
1315          *
1316          * If the default patch file is used, no reset is done when disabling
1317          * the manufacturer.
1318          */
1319         while (fw->size > fw_ptr - fw->data) {
1320                 int ret;
1321 
1322                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1323                                                  &disable_patch);
1324                 if (ret < 0)
1325                         goto exit_mfg_deactivate;
1326         }
1327 
1328         release_firmware(fw);
1329 
1330         if (disable_patch)
1331                 goto exit_mfg_disable;
1332 
1333         /* Patching completed successfully and disable the manufacturer mode
1334          * with reset and activate the downloaded firmware patches.
1335          */
1336         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1337                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1338         if (IS_ERR(skb)) {
1339                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1340                        hdev->name, PTR_ERR(skb));
1341                 return PTR_ERR(skb);
1342         }
1343         kfree_skb(skb);
1344 
1345         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1346                 hdev->name);
1347 
1348         return 0;
1349 
1350 exit_mfg_disable:
1351         /* Disable the manufacturer mode without reset */
1352         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1353                              HCI_INIT_TIMEOUT);
1354         if (IS_ERR(skb)) {
1355                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1356                        hdev->name, PTR_ERR(skb));
1357                 return PTR_ERR(skb);
1358         }
1359         kfree_skb(skb);
1360 
1361         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1362         return 0;
1363 
1364 exit_mfg_deactivate:
1365         release_firmware(fw);
1366 
1367         /* Patching failed. Disable the manufacturer mode with reset and
1368          * deactivate the downloaded firmware patches.
1369          */
1370         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1371                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1372         if (IS_ERR(skb)) {
1373                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1374                        hdev->name, PTR_ERR(skb));
1375                 return PTR_ERR(skb);
1376         }
1377         kfree_skb(skb);
1378 
1379         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1380                 hdev->name);
1381 
1382         return 0;
1383 }
1384 
1385 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1386 {
1387         struct btusb_data *data = hci_get_drvdata(hdev);
1388         struct usb_device *udev = data->udev;
1389         char fw_name[64];
1390         const struct firmware *fw;
1391         const u8 *fw_ptr;
1392         size_t fw_size;
1393         const struct hci_command_hdr *cmd;
1394         const u8 *cmd_param;
1395         u16 opcode;
1396         struct sk_buff *skb;
1397         struct hci_rp_read_local_version *ver;
1398         long ret;
1399 
1400         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1401                  udev->product ? udev->product : "BCM",
1402                  le16_to_cpu(udev->descriptor.idVendor),
1403                  le16_to_cpu(udev->descriptor.idProduct));
1404 
1405         ret = request_firmware(&fw, fw_name, &hdev->dev);
1406         if (ret < 0) {
1407                 BT_INFO("%s: BCM: patch %s not found", hdev->name,
1408                         fw_name);
1409                 return 0;
1410         }
1411 
1412         /* Reset */
1413         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1414         if (IS_ERR(skb)) {
1415                 ret = PTR_ERR(skb);
1416                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1417                 goto done;
1418         }
1419         kfree_skb(skb);
1420 
1421         /* Read Local Version Info */
1422         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1423                              HCI_INIT_TIMEOUT);
1424         if (IS_ERR(skb)) {
1425                 ret = PTR_ERR(skb);
1426                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1427                         hdev->name, ret);
1428                 goto done;
1429         }
1430 
1431         if (skb->len != sizeof(*ver)) {
1432                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1433                         hdev->name);
1434                 kfree_skb(skb);
1435                 ret = -EIO;
1436                 goto done;
1437         }
1438 
1439         ver = (struct hci_rp_read_local_version *) skb->data;
1440         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1441                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1442                 ver->lmp_ver, ver->lmp_subver);
1443         kfree_skb(skb);
1444 
1445         /* Start Download */
1446         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1447         if (IS_ERR(skb)) {
1448                 ret = PTR_ERR(skb);
1449                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1450                         hdev->name, ret);
1451                 goto reset_fw;
1452         }
1453         kfree_skb(skb);
1454 
1455         /* 50 msec delay after Download Minidrv completes */
1456         msleep(50);
1457 
1458         fw_ptr = fw->data;
1459         fw_size = fw->size;
1460 
1461         while (fw_size >= sizeof(*cmd)) {
1462                 cmd = (struct hci_command_hdr *) fw_ptr;
1463                 fw_ptr += sizeof(*cmd);
1464                 fw_size -= sizeof(*cmd);
1465 
1466                 if (fw_size < cmd->plen) {
1467                         BT_ERR("%s: BCM: patch %s is corrupted",
1468                                 hdev->name, fw_name);
1469                         ret = -EINVAL;
1470                         goto reset_fw;
1471                 }
1472 
1473                 cmd_param = fw_ptr;
1474                 fw_ptr += cmd->plen;
1475                 fw_size -= cmd->plen;
1476 
1477                 opcode = le16_to_cpu(cmd->opcode);
1478 
1479                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1480                                      HCI_INIT_TIMEOUT);
1481                 if (IS_ERR(skb)) {
1482                         ret = PTR_ERR(skb);
1483                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1484                                 hdev->name, opcode, ret);
1485                         goto reset_fw;
1486                 }
1487                 kfree_skb(skb);
1488         }
1489 
1490         /* 250 msec delay after Launch Ram completes */
1491         msleep(250);
1492 
1493 reset_fw:
1494         /* Reset */
1495         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1496         if (IS_ERR(skb)) {
1497                 ret = PTR_ERR(skb);
1498                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1499                 goto done;
1500         }
1501         kfree_skb(skb);
1502 
1503         /* Read Local Version Info */
1504         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1505                              HCI_INIT_TIMEOUT);
1506         if (IS_ERR(skb)) {
1507                 ret = PTR_ERR(skb);
1508                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1509                         hdev->name, ret);
1510                 goto done;
1511         }
1512 
1513         if (skb->len != sizeof(*ver)) {
1514                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1515                         hdev->name);
1516                 kfree_skb(skb);
1517                 ret = -EIO;
1518                 goto done;
1519         }
1520 
1521         ver = (struct hci_rp_read_local_version *) skb->data;
1522         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1523                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1524                 ver->lmp_ver, ver->lmp_subver);
1525         kfree_skb(skb);
1526 
1527 done:
1528         release_firmware(fw);
1529 
1530         return ret;
1531 }
1532 
1533 static int btusb_probe(struct usb_interface *intf,
1534                                 const struct usb_device_id *id)
1535 {
1536         struct usb_endpoint_descriptor *ep_desc;
1537         struct btusb_data *data;
1538         struct hci_dev *hdev;
1539         int i, err;
1540 
1541         BT_DBG("intf %p id %p", intf, id);
1542 
1543         /* interface numbers are hardcoded in the spec */
1544         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1545                 return -ENODEV;
1546 
1547         if (!id->driver_info) {
1548                 const struct usb_device_id *match;
1549                 match = usb_match_id(intf, blacklist_table);
1550                 if (match)
1551                         id = match;
1552         }
1553 
1554         if (id->driver_info == BTUSB_IGNORE)
1555                 return -ENODEV;
1556 
1557         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1558                 return -ENODEV;
1559 
1560         if (ignore_csr && id->driver_info & BTUSB_CSR)
1561                 return -ENODEV;
1562 
1563         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1564                 return -ENODEV;
1565 
1566         if (id->driver_info & BTUSB_ATH3012) {
1567                 struct usb_device *udev = interface_to_usbdev(intf);
1568 
1569                 /* Old firmware would otherwise let ath3k driver load
1570                  * patch and sysconfig files */
1571                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1572                         return -ENODEV;
1573         }
1574 
1575         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1576         if (!data)
1577                 return -ENOMEM;
1578 
1579         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1580                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1581 
1582                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1583                         data->intr_ep = ep_desc;
1584                         continue;
1585                 }
1586 
1587                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1588                         data->bulk_tx_ep = ep_desc;
1589                         continue;
1590                 }
1591 
1592                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1593                         data->bulk_rx_ep = ep_desc;
1594                         continue;
1595                 }
1596         }
1597 
1598         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1599                 return -ENODEV;
1600 
1601         data->cmdreq_type = USB_TYPE_CLASS;
1602 
1603         data->udev = interface_to_usbdev(intf);
1604         data->intf = intf;
1605 
1606         spin_lock_init(&data->lock);
1607 
1608         INIT_WORK(&data->work, btusb_work);
1609         INIT_WORK(&data->waker, btusb_waker);
1610         spin_lock_init(&data->txlock);
1611 
1612         init_usb_anchor(&data->tx_anchor);
1613         init_usb_anchor(&data->intr_anchor);
1614         init_usb_anchor(&data->bulk_anchor);
1615         init_usb_anchor(&data->isoc_anchor);
1616         init_usb_anchor(&data->deferred);
1617 
1618         hdev = hci_alloc_dev();
1619         if (!hdev)
1620                 return -ENOMEM;
1621 
1622         hdev->bus = HCI_USB;
1623         hci_set_drvdata(hdev, data);
1624 
1625         data->hdev = hdev;
1626 
1627         SET_HCIDEV_DEV(hdev, &intf->dev);
1628 
1629         hdev->open   = btusb_open;
1630         hdev->close  = btusb_close;
1631         hdev->flush  = btusb_flush;
1632         hdev->send   = btusb_send_frame;
1633         hdev->notify = btusb_notify;
1634 
1635         if (id->driver_info & BTUSB_BCM92035)
1636                 hdev->setup = btusb_setup_bcm92035;
1637 
1638         if (id->driver_info & BTUSB_BCM_PATCHRAM)
1639                 hdev->setup = btusb_setup_bcm_patchram;
1640 
1641         if (id->driver_info & BTUSB_INTEL)
1642                 hdev->setup = btusb_setup_intel;
1643 
1644         /* Interface numbers are hardcoded in the specification */
1645         data->isoc = usb_ifnum_to_if(data->udev, 1);
1646 
1647         if (!reset)
1648                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1649 
1650         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1651                 if (!disable_scofix)
1652                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1653         }
1654 
1655         if (id->driver_info & BTUSB_BROKEN_ISOC)
1656                 data->isoc = NULL;
1657 
1658         if (id->driver_info & BTUSB_DIGIANSWER) {
1659                 data->cmdreq_type = USB_TYPE_VENDOR;
1660                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1661         }
1662 
1663         if (id->driver_info & BTUSB_CSR) {
1664                 struct usb_device *udev = data->udev;
1665                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1666 
1667                 /* Old firmware would otherwise execute USB reset */
1668                 if (bcdDevice < 0x117)
1669                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1670 
1671                 /* Fake CSR devices with broken commands */
1672                 if (bcdDevice <= 0x100)
1673                         hdev->setup = btusb_setup_csr;
1674         }
1675 
1676         if (id->driver_info & BTUSB_SNIFFER) {
1677                 struct usb_device *udev = data->udev;
1678 
1679                 /* New sniffer firmware has crippled HCI interface */
1680                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1681                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1682 
1683                 data->isoc = NULL;
1684         }
1685 
1686         if (data->isoc) {
1687                 err = usb_driver_claim_interface(&btusb_driver,
1688                                                         data->isoc, data);
1689                 if (err < 0) {
1690                         hci_free_dev(hdev);
1691                         return err;
1692                 }
1693         }
1694 
1695         err = hci_register_dev(hdev);
1696         if (err < 0) {
1697                 hci_free_dev(hdev);
1698                 return err;
1699         }
1700 
1701         usb_set_intfdata(intf, data);
1702 
1703         return 0;
1704 }
1705 
1706 static void btusb_disconnect(struct usb_interface *intf)
1707 {
1708         struct btusb_data *data = usb_get_intfdata(intf);
1709         struct hci_dev *hdev;
1710 
1711         BT_DBG("intf %p", intf);
1712 
1713         if (!data)
1714                 return;
1715 
1716         hdev = data->hdev;
1717         usb_set_intfdata(data->intf, NULL);
1718 
1719         if (data->isoc)
1720                 usb_set_intfdata(data->isoc, NULL);
1721 
1722         hci_unregister_dev(hdev);
1723 
1724         if (intf == data->isoc)
1725                 usb_driver_release_interface(&btusb_driver, data->intf);
1726         else if (data->isoc)
1727                 usb_driver_release_interface(&btusb_driver, data->isoc);
1728 
1729         hci_free_dev(hdev);
1730 }
1731 
1732 #ifdef CONFIG_PM
1733 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1734 {
1735         struct btusb_data *data = usb_get_intfdata(intf);
1736 
1737         BT_DBG("intf %p", intf);
1738 
1739         if (data->suspend_count++)
1740                 return 0;
1741 
1742         spin_lock_irq(&data->txlock);
1743         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1744                 set_bit(BTUSB_SUSPENDING, &data->flags);
1745                 spin_unlock_irq(&data->txlock);
1746         } else {
1747                 spin_unlock_irq(&data->txlock);
1748                 data->suspend_count--;
1749                 return -EBUSY;
1750         }
1751 
1752         cancel_work_sync(&data->work);
1753 
1754         btusb_stop_traffic(data);
1755         usb_kill_anchored_urbs(&data->tx_anchor);
1756 
1757         return 0;
1758 }
1759 
1760 static void play_deferred(struct btusb_data *data)
1761 {
1762         struct urb *urb;
1763         int err;
1764 
1765         while ((urb = usb_get_from_anchor(&data->deferred))) {
1766                 err = usb_submit_urb(urb, GFP_ATOMIC);
1767                 if (err < 0)
1768                         break;
1769 
1770                 data->tx_in_flight++;
1771         }
1772         usb_scuttle_anchored_urbs(&data->deferred);
1773 }
1774 
1775 static int btusb_resume(struct usb_interface *intf)
1776 {
1777         struct btusb_data *data = usb_get_intfdata(intf);
1778         struct hci_dev *hdev = data->hdev;
1779         int err = 0;
1780 
1781         BT_DBG("intf %p", intf);
1782 
1783         if (--data->suspend_count)
1784                 return 0;
1785 
1786         if (!test_bit(HCI_RUNNING, &hdev->flags))
1787                 goto done;
1788 
1789         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1790                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1791                 if (err < 0) {
1792                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1793                         goto failed;
1794                 }
1795         }
1796 
1797         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1798                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1799                 if (err < 0) {
1800                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1801                         goto failed;
1802                 }
1803 
1804                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1805         }
1806 
1807         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1808                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1809                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1810                 else
1811                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1812         }
1813 
1814         spin_lock_irq(&data->txlock);
1815         play_deferred(data);
1816         clear_bit(BTUSB_SUSPENDING, &data->flags);
1817         spin_unlock_irq(&data->txlock);
1818         schedule_work(&data->work);
1819 
1820         return 0;
1821 
1822 failed:
1823         usb_scuttle_anchored_urbs(&data->deferred);
1824 done:
1825         spin_lock_irq(&data->txlock);
1826         clear_bit(BTUSB_SUSPENDING, &data->flags);
1827         spin_unlock_irq(&data->txlock);
1828 
1829         return err;
1830 }
1831 #endif
1832 
1833 static struct usb_driver btusb_driver = {
1834         .name           = "btusb",
1835         .probe          = btusb_probe,
1836         .disconnect     = btusb_disconnect,
1837 #ifdef CONFIG_PM
1838         .suspend        = btusb_suspend,
1839         .resume         = btusb_resume,
1840 #endif
1841         .id_table       = btusb_table,
1842         .supports_autosuspend = 1,
1843         .disable_hub_initiated_lpm = 1,
1844 };
1845 
1846 module_usb_driver(btusb_driver);
1847 
1848 module_param(ignore_dga, bool, 0644);
1849 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1850 
1851 module_param(ignore_csr, bool, 0644);
1852 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1853 
1854 module_param(ignore_sniffer, bool, 0644);
1855 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1856 
1857 module_param(disable_scofix, bool, 0644);
1858 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1859 
1860 module_param(force_scofix, bool, 0644);
1861 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1862 
1863 module_param(reset, bool, 0644);
1864 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1865 
1866 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1867 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1868 MODULE_VERSION(VERSION);
1869 MODULE_LICENSE("GPL");
1870 

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