Version:  2.0.40 2.2.26 2.4.37 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 3.17

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 disable_scofix;
 34 static bool force_scofix;
 35 
 36 static bool reset = 1;
 37 
 38 static struct usb_driver btusb_driver;
 39 
 40 #define BTUSB_IGNORE            0x01
 41 #define BTUSB_DIGIANSWER        0x02
 42 #define BTUSB_CSR               0x04
 43 #define BTUSB_SNIFFER           0x08
 44 #define BTUSB_BCM92035          0x10
 45 #define BTUSB_BROKEN_ISOC       0x20
 46 #define BTUSB_WRONG_SCO_MTU     0x40
 47 #define BTUSB_ATH3012           0x80
 48 #define BTUSB_INTEL             0x100
 49 #define BTUSB_INTEL_BOOT        0x200
 50 #define BTUSB_BCM_PATCHRAM      0x400
 51 #define BTUSB_MARVELL           0x800
 52 
 53 static const struct usb_device_id btusb_table[] = {
 54         /* Generic Bluetooth USB device */
 55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
 56 
 57         /* Apple-specific (Broadcom) devices */
 58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
 59 
 60         /* MediaTek MT76x0E */
 61         { USB_DEVICE(0x0e8d, 0x763f) },
 62 
 63         /* Broadcom SoftSailing reporting vendor specific */
 64         { USB_DEVICE(0x0a5c, 0x21e1) },
 65 
 66         /* Apple MacBookPro 7,1 */
 67         { USB_DEVICE(0x05ac, 0x8213) },
 68 
 69         /* Apple iMac11,1 */
 70         { USB_DEVICE(0x05ac, 0x8215) },
 71 
 72         /* Apple MacBookPro6,2 */
 73         { USB_DEVICE(0x05ac, 0x8218) },
 74 
 75         /* Apple MacBookAir3,1, MacBookAir3,2 */
 76         { USB_DEVICE(0x05ac, 0x821b) },
 77 
 78         /* Apple MacBookAir4,1 */
 79         { USB_DEVICE(0x05ac, 0x821f) },
 80 
 81         /* Apple MacBookPro8,2 */
 82         { USB_DEVICE(0x05ac, 0x821a) },
 83 
 84         /* Apple MacMini5,1 */
 85         { USB_DEVICE(0x05ac, 0x8281) },
 86 
 87         /* AVM BlueFRITZ! USB v2.0 */
 88         { USB_DEVICE(0x057c, 0x3800) },
 89 
 90         /* Bluetooth Ultraport Module from IBM */
 91         { USB_DEVICE(0x04bf, 0x030a) },
 92 
 93         /* ALPS Modules with non-standard id */
 94         { USB_DEVICE(0x044e, 0x3001) },
 95         { USB_DEVICE(0x044e, 0x3002) },
 96 
 97         /* Ericsson with non-standard id */
 98         { USB_DEVICE(0x0bdb, 0x1002) },
 99 
100         /* Canyon CN-BTU1 with HID interfaces */
101         { USB_DEVICE(0x0c10, 0x0000) },
102 
103         /* Broadcom BCM20702A0 */
104         { USB_DEVICE(0x0489, 0xe042) },
105         { USB_DEVICE(0x04ca, 0x2003) },
106         { USB_DEVICE(0x0b05, 0x17b5) },
107         { USB_DEVICE(0x0b05, 0x17cb) },
108         { USB_DEVICE(0x413c, 0x8197) },
109 
110         /* Foxconn - Hon Hai */
111         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
112 
113         /* Broadcom devices with vendor specific id */
114         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
115           .driver_info = BTUSB_BCM_PATCHRAM },
116 
117         /* ASUSTek Computer - Broadcom based */
118         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
119 
120         /* Belkin F8065bf - Broadcom based */
121         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
122 
123         /* IMC Networks - Broadcom based */
124         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
125 
126         /* Intel Bluetooth USB Bootloader (RAM module) */
127         { USB_DEVICE(0x8087, 0x0a5a),
128           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
129 
130         { }     /* Terminating entry */
131 };
132 
133 MODULE_DEVICE_TABLE(usb, btusb_table);
134 
135 static const struct usb_device_id blacklist_table[] = {
136         /* CSR BlueCore devices */
137         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
138 
139         /* Broadcom BCM2033 without firmware */
140         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
141 
142         /* Atheros 3011 with sflash firmware */
143         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
144         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
145         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
146         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
147         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
148         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
149 
150         /* Atheros AR9285 Malbec with sflash firmware */
151         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
152 
153         /* Atheros 3012 with sflash firmware */
154         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
155         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
156         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
157         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
158         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
159         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
160         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
161         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
162         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
163         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
164         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
165         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
166         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
167         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
168         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
169         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
170         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
171         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
172         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
173         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
174         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
175         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
176         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
177         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
178         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
179         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
180         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
181         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
182         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
183         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
184         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
185 
186         /* Atheros AR5BBU12 with sflash firmware */
187         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
188 
189         /* Atheros AR5BBU12 with sflash firmware */
190         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
191         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
192 
193         /* Broadcom BCM2035 */
194         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
195         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
196         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
197 
198         /* Broadcom BCM2045 */
199         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
200         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
201 
202         /* IBM/Lenovo ThinkPad with Broadcom chip */
203         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
204         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
205 
206         /* HP laptop with Broadcom chip */
207         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
208 
209         /* Dell laptop with Broadcom chip */
210         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
211 
212         /* Dell Wireless 370 and 410 devices */
213         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
214         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
215 
216         /* Belkin F8T012 and F8T013 devices */
217         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
218         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
219 
220         /* Asus WL-BTD202 device */
221         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
222 
223         /* Kensington Bluetooth USB adapter */
224         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
225 
226         /* RTX Telecom based adapters with buggy SCO support */
227         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
228         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
229 
230         /* CONWISE Technology based adapters with buggy SCO support */
231         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
232 
233         /* Digianswer devices */
234         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
235         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
236 
237         /* CSR BlueCore Bluetooth Sniffer */
238         { USB_DEVICE(0x0a12, 0x0002),
239           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
240 
241         /* Frontline ComProbe Bluetooth Sniffer */
242         { USB_DEVICE(0x16d3, 0x0002),
243           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
244 
245         /* Intel Bluetooth device */
246         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
247         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
248 
249         /* Marvell device */
250         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
251         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
252 
253         { }     /* Terminating entry */
254 };
255 
256 #define BTUSB_MAX_ISOC_FRAMES   10
257 
258 #define BTUSB_INTR_RUNNING      0
259 #define BTUSB_BULK_RUNNING      1
260 #define BTUSB_ISOC_RUNNING      2
261 #define BTUSB_SUSPENDING        3
262 #define BTUSB_DID_ISO_RESUME    4
263 
264 struct btusb_data {
265         struct hci_dev       *hdev;
266         struct usb_device    *udev;
267         struct usb_interface *intf;
268         struct usb_interface *isoc;
269 
270         spinlock_t lock;
271 
272         unsigned long flags;
273 
274         struct work_struct work;
275         struct work_struct waker;
276 
277         struct usb_anchor tx_anchor;
278         struct usb_anchor intr_anchor;
279         struct usb_anchor bulk_anchor;
280         struct usb_anchor isoc_anchor;
281         struct usb_anchor deferred;
282         int tx_in_flight;
283         spinlock_t txlock;
284 
285         struct usb_endpoint_descriptor *intr_ep;
286         struct usb_endpoint_descriptor *bulk_tx_ep;
287         struct usb_endpoint_descriptor *bulk_rx_ep;
288         struct usb_endpoint_descriptor *isoc_tx_ep;
289         struct usb_endpoint_descriptor *isoc_rx_ep;
290 
291         __u8 cmdreq_type;
292 
293         unsigned int sco_num;
294         int isoc_altsetting;
295         int suspend_count;
296 };
297 
298 static int inc_tx(struct btusb_data *data)
299 {
300         unsigned long flags;
301         int rv;
302 
303         spin_lock_irqsave(&data->txlock, flags);
304         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
305         if (!rv)
306                 data->tx_in_flight++;
307         spin_unlock_irqrestore(&data->txlock, flags);
308 
309         return rv;
310 }
311 
312 static void btusb_intr_complete(struct urb *urb)
313 {
314         struct hci_dev *hdev = urb->context;
315         struct btusb_data *data = hci_get_drvdata(hdev);
316         int err;
317 
318         BT_DBG("%s urb %p status %d count %d", hdev->name,
319                                         urb, urb->status, urb->actual_length);
320 
321         if (!test_bit(HCI_RUNNING, &hdev->flags))
322                 return;
323 
324         if (urb->status == 0) {
325                 hdev->stat.byte_rx += urb->actual_length;
326 
327                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
328                                                 urb->transfer_buffer,
329                                                 urb->actual_length) < 0) {
330                         BT_ERR("%s corrupted event packet", hdev->name);
331                         hdev->stat.err_rx++;
332                 }
333         }
334 
335         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
336                 return;
337 
338         usb_mark_last_busy(data->udev);
339         usb_anchor_urb(urb, &data->intr_anchor);
340 
341         err = usb_submit_urb(urb, GFP_ATOMIC);
342         if (err < 0) {
343                 /* -EPERM: urb is being killed;
344                  * -ENODEV: device got disconnected */
345                 if (err != -EPERM && err != -ENODEV)
346                         BT_ERR("%s urb %p failed to resubmit (%d)",
347                                                 hdev->name, urb, -err);
348                 usb_unanchor_urb(urb);
349         }
350 }
351 
352 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
353 {
354         struct btusb_data *data = hci_get_drvdata(hdev);
355         struct urb *urb;
356         unsigned char *buf;
357         unsigned int pipe;
358         int err, size;
359 
360         BT_DBG("%s", hdev->name);
361 
362         if (!data->intr_ep)
363                 return -ENODEV;
364 
365         urb = usb_alloc_urb(0, mem_flags);
366         if (!urb)
367                 return -ENOMEM;
368 
369         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
370 
371         buf = kmalloc(size, mem_flags);
372         if (!buf) {
373                 usb_free_urb(urb);
374                 return -ENOMEM;
375         }
376 
377         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
378 
379         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
380                                                 btusb_intr_complete, hdev,
381                                                 data->intr_ep->bInterval);
382 
383         urb->transfer_flags |= URB_FREE_BUFFER;
384 
385         usb_anchor_urb(urb, &data->intr_anchor);
386 
387         err = usb_submit_urb(urb, mem_flags);
388         if (err < 0) {
389                 if (err != -EPERM && err != -ENODEV)
390                         BT_ERR("%s urb %p submission failed (%d)",
391                                                 hdev->name, urb, -err);
392                 usb_unanchor_urb(urb);
393         }
394 
395         usb_free_urb(urb);
396 
397         return err;
398 }
399 
400 static void btusb_bulk_complete(struct urb *urb)
401 {
402         struct hci_dev *hdev = urb->context;
403         struct btusb_data *data = hci_get_drvdata(hdev);
404         int err;
405 
406         BT_DBG("%s urb %p status %d count %d", hdev->name,
407                                         urb, urb->status, urb->actual_length);
408 
409         if (!test_bit(HCI_RUNNING, &hdev->flags))
410                 return;
411 
412         if (urb->status == 0) {
413                 hdev->stat.byte_rx += urb->actual_length;
414 
415                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
416                                                 urb->transfer_buffer,
417                                                 urb->actual_length) < 0) {
418                         BT_ERR("%s corrupted ACL packet", hdev->name);
419                         hdev->stat.err_rx++;
420                 }
421         }
422 
423         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
424                 return;
425 
426         usb_anchor_urb(urb, &data->bulk_anchor);
427         usb_mark_last_busy(data->udev);
428 
429         err = usb_submit_urb(urb, GFP_ATOMIC);
430         if (err < 0) {
431                 /* -EPERM: urb is being killed;
432                  * -ENODEV: device got disconnected */
433                 if (err != -EPERM && err != -ENODEV)
434                         BT_ERR("%s urb %p failed to resubmit (%d)",
435                                                 hdev->name, urb, -err);
436                 usb_unanchor_urb(urb);
437         }
438 }
439 
440 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
441 {
442         struct btusb_data *data = hci_get_drvdata(hdev);
443         struct urb *urb;
444         unsigned char *buf;
445         unsigned int pipe;
446         int err, size = HCI_MAX_FRAME_SIZE;
447 
448         BT_DBG("%s", hdev->name);
449 
450         if (!data->bulk_rx_ep)
451                 return -ENODEV;
452 
453         urb = usb_alloc_urb(0, mem_flags);
454         if (!urb)
455                 return -ENOMEM;
456 
457         buf = kmalloc(size, mem_flags);
458         if (!buf) {
459                 usb_free_urb(urb);
460                 return -ENOMEM;
461         }
462 
463         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
464 
465         usb_fill_bulk_urb(urb, data->udev, pipe,
466                                         buf, size, btusb_bulk_complete, hdev);
467 
468         urb->transfer_flags |= URB_FREE_BUFFER;
469 
470         usb_mark_last_busy(data->udev);
471         usb_anchor_urb(urb, &data->bulk_anchor);
472 
473         err = usb_submit_urb(urb, mem_flags);
474         if (err < 0) {
475                 if (err != -EPERM && err != -ENODEV)
476                         BT_ERR("%s urb %p submission failed (%d)",
477                                                 hdev->name, urb, -err);
478                 usb_unanchor_urb(urb);
479         }
480 
481         usb_free_urb(urb);
482 
483         return err;
484 }
485 
486 static void btusb_isoc_complete(struct urb *urb)
487 {
488         struct hci_dev *hdev = urb->context;
489         struct btusb_data *data = hci_get_drvdata(hdev);
490         int i, err;
491 
492         BT_DBG("%s urb %p status %d count %d", hdev->name,
493                                         urb, urb->status, urb->actual_length);
494 
495         if (!test_bit(HCI_RUNNING, &hdev->flags))
496                 return;
497 
498         if (urb->status == 0) {
499                 for (i = 0; i < urb->number_of_packets; i++) {
500                         unsigned int offset = urb->iso_frame_desc[i].offset;
501                         unsigned int length = urb->iso_frame_desc[i].actual_length;
502 
503                         if (urb->iso_frame_desc[i].status)
504                                 continue;
505 
506                         hdev->stat.byte_rx += length;
507 
508                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
509                                                 urb->transfer_buffer + offset,
510                                                                 length) < 0) {
511                                 BT_ERR("%s corrupted SCO packet", hdev->name);
512                                 hdev->stat.err_rx++;
513                         }
514                 }
515         }
516 
517         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
518                 return;
519 
520         usb_anchor_urb(urb, &data->isoc_anchor);
521 
522         err = usb_submit_urb(urb, GFP_ATOMIC);
523         if (err < 0) {
524                 /* -EPERM: urb is being killed;
525                  * -ENODEV: device got disconnected */
526                 if (err != -EPERM && err != -ENODEV)
527                         BT_ERR("%s urb %p failed to resubmit (%d)",
528                                                 hdev->name, urb, -err);
529                 usb_unanchor_urb(urb);
530         }
531 }
532 
533 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
534 {
535         int i, offset = 0;
536 
537         BT_DBG("len %d mtu %d", len, mtu);
538 
539         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
540                                         i++, offset += mtu, len -= mtu) {
541                 urb->iso_frame_desc[i].offset = offset;
542                 urb->iso_frame_desc[i].length = mtu;
543         }
544 
545         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
546                 urb->iso_frame_desc[i].offset = offset;
547                 urb->iso_frame_desc[i].length = len;
548                 i++;
549         }
550 
551         urb->number_of_packets = i;
552 }
553 
554 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
555 {
556         struct btusb_data *data = hci_get_drvdata(hdev);
557         struct urb *urb;
558         unsigned char *buf;
559         unsigned int pipe;
560         int err, size;
561 
562         BT_DBG("%s", hdev->name);
563 
564         if (!data->isoc_rx_ep)
565                 return -ENODEV;
566 
567         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
568         if (!urb)
569                 return -ENOMEM;
570 
571         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
572                                                 BTUSB_MAX_ISOC_FRAMES;
573 
574         buf = kmalloc(size, mem_flags);
575         if (!buf) {
576                 usb_free_urb(urb);
577                 return -ENOMEM;
578         }
579 
580         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
581 
582         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
583                                 hdev, data->isoc_rx_ep->bInterval);
584 
585         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
586 
587         __fill_isoc_descriptor(urb, size,
588                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
589 
590         usb_anchor_urb(urb, &data->isoc_anchor);
591 
592         err = usb_submit_urb(urb, mem_flags);
593         if (err < 0) {
594                 if (err != -EPERM && err != -ENODEV)
595                         BT_ERR("%s urb %p submission failed (%d)",
596                                                 hdev->name, urb, -err);
597                 usb_unanchor_urb(urb);
598         }
599 
600         usb_free_urb(urb);
601 
602         return err;
603 }
604 
605 static void btusb_tx_complete(struct urb *urb)
606 {
607         struct sk_buff *skb = urb->context;
608         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
609         struct btusb_data *data = hci_get_drvdata(hdev);
610 
611         BT_DBG("%s urb %p status %d count %d", hdev->name,
612                                         urb, urb->status, urb->actual_length);
613 
614         if (!test_bit(HCI_RUNNING, &hdev->flags))
615                 goto done;
616 
617         if (!urb->status)
618                 hdev->stat.byte_tx += urb->transfer_buffer_length;
619         else
620                 hdev->stat.err_tx++;
621 
622 done:
623         spin_lock(&data->txlock);
624         data->tx_in_flight--;
625         spin_unlock(&data->txlock);
626 
627         kfree(urb->setup_packet);
628 
629         kfree_skb(skb);
630 }
631 
632 static void btusb_isoc_tx_complete(struct urb *urb)
633 {
634         struct sk_buff *skb = urb->context;
635         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
636 
637         BT_DBG("%s urb %p status %d count %d", hdev->name,
638                                         urb, urb->status, urb->actual_length);
639 
640         if (!test_bit(HCI_RUNNING, &hdev->flags))
641                 goto done;
642 
643         if (!urb->status)
644                 hdev->stat.byte_tx += urb->transfer_buffer_length;
645         else
646                 hdev->stat.err_tx++;
647 
648 done:
649         kfree(urb->setup_packet);
650 
651         kfree_skb(skb);
652 }
653 
654 static int btusb_open(struct hci_dev *hdev)
655 {
656         struct btusb_data *data = hci_get_drvdata(hdev);
657         int err;
658 
659         BT_DBG("%s", hdev->name);
660 
661         err = usb_autopm_get_interface(data->intf);
662         if (err < 0)
663                 return err;
664 
665         data->intf->needs_remote_wakeup = 1;
666 
667         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
668                 goto done;
669 
670         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
671                 goto done;
672 
673         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
674         if (err < 0)
675                 goto failed;
676 
677         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
678         if (err < 0) {
679                 usb_kill_anchored_urbs(&data->intr_anchor);
680                 goto failed;
681         }
682 
683         set_bit(BTUSB_BULK_RUNNING, &data->flags);
684         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
685 
686 done:
687         usb_autopm_put_interface(data->intf);
688         return 0;
689 
690 failed:
691         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
692         clear_bit(HCI_RUNNING, &hdev->flags);
693         usb_autopm_put_interface(data->intf);
694         return err;
695 }
696 
697 static void btusb_stop_traffic(struct btusb_data *data)
698 {
699         usb_kill_anchored_urbs(&data->intr_anchor);
700         usb_kill_anchored_urbs(&data->bulk_anchor);
701         usb_kill_anchored_urbs(&data->isoc_anchor);
702 }
703 
704 static int btusb_close(struct hci_dev *hdev)
705 {
706         struct btusb_data *data = hci_get_drvdata(hdev);
707         int err;
708 
709         BT_DBG("%s", hdev->name);
710 
711         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
712                 return 0;
713 
714         cancel_work_sync(&data->work);
715         cancel_work_sync(&data->waker);
716 
717         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
718         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
719         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
720 
721         btusb_stop_traffic(data);
722         err = usb_autopm_get_interface(data->intf);
723         if (err < 0)
724                 goto failed;
725 
726         data->intf->needs_remote_wakeup = 0;
727         usb_autopm_put_interface(data->intf);
728 
729 failed:
730         usb_scuttle_anchored_urbs(&data->deferred);
731         return 0;
732 }
733 
734 static int btusb_flush(struct hci_dev *hdev)
735 {
736         struct btusb_data *data = hci_get_drvdata(hdev);
737 
738         BT_DBG("%s", hdev->name);
739 
740         usb_kill_anchored_urbs(&data->tx_anchor);
741 
742         return 0;
743 }
744 
745 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
746 {
747         struct btusb_data *data = hci_get_drvdata(hdev);
748         struct usb_ctrlrequest *dr;
749         struct urb *urb;
750         unsigned int pipe;
751         int err;
752 
753         BT_DBG("%s", hdev->name);
754 
755         if (!test_bit(HCI_RUNNING, &hdev->flags))
756                 return -EBUSY;
757 
758         skb->dev = (void *) hdev;
759 
760         switch (bt_cb(skb)->pkt_type) {
761         case HCI_COMMAND_PKT:
762                 urb = usb_alloc_urb(0, GFP_ATOMIC);
763                 if (!urb)
764                         return -ENOMEM;
765 
766                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
767                 if (!dr) {
768                         usb_free_urb(urb);
769                         return -ENOMEM;
770                 }
771 
772                 dr->bRequestType = data->cmdreq_type;
773                 dr->bRequest     = 0;
774                 dr->wIndex       = 0;
775                 dr->wValue       = 0;
776                 dr->wLength      = __cpu_to_le16(skb->len);
777 
778                 pipe = usb_sndctrlpipe(data->udev, 0x00);
779 
780                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
781                                 skb->data, skb->len, btusb_tx_complete, skb);
782 
783                 hdev->stat.cmd_tx++;
784                 break;
785 
786         case HCI_ACLDATA_PKT:
787                 if (!data->bulk_tx_ep)
788                         return -ENODEV;
789 
790                 urb = usb_alloc_urb(0, GFP_ATOMIC);
791                 if (!urb)
792                         return -ENOMEM;
793 
794                 pipe = usb_sndbulkpipe(data->udev,
795                                         data->bulk_tx_ep->bEndpointAddress);
796 
797                 usb_fill_bulk_urb(urb, data->udev, pipe,
798                                 skb->data, skb->len, btusb_tx_complete, skb);
799 
800                 hdev->stat.acl_tx++;
801                 break;
802 
803         case HCI_SCODATA_PKT:
804                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
805                         return -ENODEV;
806 
807                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
808                 if (!urb)
809                         return -ENOMEM;
810 
811                 pipe = usb_sndisocpipe(data->udev,
812                                         data->isoc_tx_ep->bEndpointAddress);
813 
814                 usb_fill_int_urb(urb, data->udev, pipe,
815                                 skb->data, skb->len, btusb_isoc_tx_complete,
816                                 skb, data->isoc_tx_ep->bInterval);
817 
818                 urb->transfer_flags  = URB_ISO_ASAP;
819 
820                 __fill_isoc_descriptor(urb, skb->len,
821                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
822 
823                 hdev->stat.sco_tx++;
824                 goto skip_waking;
825 
826         default:
827                 return -EILSEQ;
828         }
829 
830         err = inc_tx(data);
831         if (err) {
832                 usb_anchor_urb(urb, &data->deferred);
833                 schedule_work(&data->waker);
834                 err = 0;
835                 goto done;
836         }
837 
838 skip_waking:
839         usb_anchor_urb(urb, &data->tx_anchor);
840 
841         err = usb_submit_urb(urb, GFP_ATOMIC);
842         if (err < 0) {
843                 if (err != -EPERM && err != -ENODEV)
844                         BT_ERR("%s urb %p submission failed (%d)",
845                                                 hdev->name, urb, -err);
846                 kfree(urb->setup_packet);
847                 usb_unanchor_urb(urb);
848         } else {
849                 usb_mark_last_busy(data->udev);
850         }
851 
852 done:
853         usb_free_urb(urb);
854         return err;
855 }
856 
857 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
858 {
859         struct btusb_data *data = hci_get_drvdata(hdev);
860 
861         BT_DBG("%s evt %d", hdev->name, evt);
862 
863         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
864                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
865                 schedule_work(&data->work);
866         }
867 }
868 
869 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
870 {
871         struct btusb_data *data = hci_get_drvdata(hdev);
872         struct usb_interface *intf = data->isoc;
873         struct usb_endpoint_descriptor *ep_desc;
874         int i, err;
875 
876         if (!data->isoc)
877                 return -ENODEV;
878 
879         err = usb_set_interface(data->udev, 1, altsetting);
880         if (err < 0) {
881                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
882                 return err;
883         }
884 
885         data->isoc_altsetting = altsetting;
886 
887         data->isoc_tx_ep = NULL;
888         data->isoc_rx_ep = NULL;
889 
890         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
891                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
892 
893                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
894                         data->isoc_tx_ep = ep_desc;
895                         continue;
896                 }
897 
898                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
899                         data->isoc_rx_ep = ep_desc;
900                         continue;
901                 }
902         }
903 
904         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
905                 BT_ERR("%s invalid SCO descriptors", hdev->name);
906                 return -ENODEV;
907         }
908 
909         return 0;
910 }
911 
912 static void btusb_work(struct work_struct *work)
913 {
914         struct btusb_data *data = container_of(work, struct btusb_data, work);
915         struct hci_dev *hdev = data->hdev;
916         int new_alts;
917         int err;
918 
919         if (data->sco_num > 0) {
920                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
921                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
922                         if (err < 0) {
923                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
924                                 usb_kill_anchored_urbs(&data->isoc_anchor);
925                                 return;
926                         }
927 
928                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
929                 }
930 
931                 if (hdev->voice_setting & 0x0020) {
932                         static const int alts[3] = { 2, 4, 5 };
933                         new_alts = alts[data->sco_num - 1];
934                 } else {
935                         new_alts = data->sco_num;
936                 }
937 
938                 if (data->isoc_altsetting != new_alts) {
939                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
940                         usb_kill_anchored_urbs(&data->isoc_anchor);
941 
942                         if (__set_isoc_interface(hdev, new_alts) < 0)
943                                 return;
944                 }
945 
946                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
947                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
948                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
949                         else
950                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
951                 }
952         } else {
953                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
954                 usb_kill_anchored_urbs(&data->isoc_anchor);
955 
956                 __set_isoc_interface(hdev, 0);
957                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
958                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
959         }
960 }
961 
962 static void btusb_waker(struct work_struct *work)
963 {
964         struct btusb_data *data = container_of(work, struct btusb_data, waker);
965         int err;
966 
967         err = usb_autopm_get_interface(data->intf);
968         if (err < 0)
969                 return;
970 
971         usb_autopm_put_interface(data->intf);
972 }
973 
974 static int btusb_setup_bcm92035(struct hci_dev *hdev)
975 {
976         struct sk_buff *skb;
977         u8 val = 0x00;
978 
979         BT_DBG("%s", hdev->name);
980 
981         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
982         if (IS_ERR(skb))
983                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
984         else
985                 kfree_skb(skb);
986 
987         return 0;
988 }
989 
990 static int btusb_setup_csr(struct hci_dev *hdev)
991 {
992         struct hci_rp_read_local_version *rp;
993         struct sk_buff *skb;
994         int ret;
995 
996         BT_DBG("%s", hdev->name);
997 
998         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
999                              HCI_INIT_TIMEOUT);
1000         if (IS_ERR(skb)) {
1001                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1002                 return -PTR_ERR(skb);
1003         }
1004 
1005         rp = (struct hci_rp_read_local_version *) skb->data;
1006 
1007         if (!rp->status) {
1008                 if (le16_to_cpu(rp->manufacturer) != 10) {
1009                         /* Clear the reset quirk since this is not an actual
1010                          * early Bluetooth 1.1 device from CSR.
1011                          */
1012                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1013 
1014                         /* These fake CSR controllers have all a broken
1015                          * stored link key handling and so just disable it.
1016                          */
1017                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1018                                 &hdev->quirks);
1019                 }
1020         }
1021 
1022         ret = -bt_to_errno(rp->status);
1023 
1024         kfree_skb(skb);
1025 
1026         return ret;
1027 }
1028 
1029 struct intel_version {
1030         u8 status;
1031         u8 hw_platform;
1032         u8 hw_variant;
1033         u8 hw_revision;
1034         u8 fw_variant;
1035         u8 fw_revision;
1036         u8 fw_build_num;
1037         u8 fw_build_ww;
1038         u8 fw_build_yy;
1039         u8 fw_patch_num;
1040 } __packed;
1041 
1042 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1043                                                 struct intel_version *ver)
1044 {
1045         const struct firmware *fw;
1046         char fwname[64];
1047         int ret;
1048 
1049         snprintf(fwname, sizeof(fwname),
1050                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1051                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1052                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1053                  ver->fw_build_ww, ver->fw_build_yy);
1054 
1055         ret = request_firmware(&fw, fwname, &hdev->dev);
1056         if (ret < 0) {
1057                 if (ret == -EINVAL) {
1058                         BT_ERR("%s Intel firmware file request failed (%d)",
1059                                hdev->name, ret);
1060                         return NULL;
1061                 }
1062 
1063                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1064                        hdev->name, fwname, ret);
1065 
1066                 /* If the correct firmware patch file is not found, use the
1067                  * default firmware patch file instead
1068                  */
1069                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1070                          ver->hw_platform, ver->hw_variant);
1071                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1072                         BT_ERR("%s failed to open default Intel fw file: %s",
1073                                hdev->name, fwname);
1074                         return NULL;
1075                 }
1076         }
1077 
1078         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1079 
1080         return fw;
1081 }
1082 
1083 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1084                                       const struct firmware *fw,
1085                                       const u8 **fw_ptr, int *disable_patch)
1086 {
1087         struct sk_buff *skb;
1088         struct hci_command_hdr *cmd;
1089         const u8 *cmd_param;
1090         struct hci_event_hdr *evt = NULL;
1091         const u8 *evt_param = NULL;
1092         int remain = fw->size - (*fw_ptr - fw->data);
1093 
1094         /* The first byte indicates the types of the patch command or event.
1095          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1096          * in the current firmware buffer doesn't start with 0x01 or
1097          * the size of remain buffer is smaller than HCI command header,
1098          * the firmware file is corrupted and it should stop the patching
1099          * process.
1100          */
1101         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1102                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1103                 return -EINVAL;
1104         }
1105         (*fw_ptr)++;
1106         remain--;
1107 
1108         cmd = (struct hci_command_hdr *)(*fw_ptr);
1109         *fw_ptr += sizeof(*cmd);
1110         remain -= sizeof(*cmd);
1111 
1112         /* Ensure that the remain firmware data is long enough than the length
1113          * of command parameter. If not, the firmware file is corrupted.
1114          */
1115         if (remain < cmd->plen) {
1116                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1117                 return -EFAULT;
1118         }
1119 
1120         /* If there is a command that loads a patch in the firmware
1121          * file, then enable the patch upon success, otherwise just
1122          * disable the manufacturer mode, for example patch activation
1123          * is not required when the default firmware patch file is used
1124          * because there are no patch data to load.
1125          */
1126         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1127                 *disable_patch = 0;
1128 
1129         cmd_param = *fw_ptr;
1130         *fw_ptr += cmd->plen;
1131         remain -= cmd->plen;
1132 
1133         /* This reads the expected events when the above command is sent to the
1134          * device. Some vendor commands expects more than one events, for
1135          * example command status event followed by vendor specific event.
1136          * For this case, it only keeps the last expected event. so the command
1137          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1138          * last expected event.
1139          */
1140         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1141                 (*fw_ptr)++;
1142                 remain--;
1143 
1144                 evt = (struct hci_event_hdr *)(*fw_ptr);
1145                 *fw_ptr += sizeof(*evt);
1146                 remain -= sizeof(*evt);
1147 
1148                 if (remain < evt->plen) {
1149                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1150                                hdev->name);
1151                         return -EFAULT;
1152                 }
1153 
1154                 evt_param = *fw_ptr;
1155                 *fw_ptr += evt->plen;
1156                 remain -= evt->plen;
1157         }
1158 
1159         /* Every HCI commands in the firmware file has its correspond event.
1160          * If event is not found or remain is smaller than zero, the firmware
1161          * file is corrupted.
1162          */
1163         if (!evt || !evt_param || remain < 0) {
1164                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1165                 return -EFAULT;
1166         }
1167 
1168         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1169                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1170         if (IS_ERR(skb)) {
1171                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1172                        hdev->name, cmd->opcode, PTR_ERR(skb));
1173                 return PTR_ERR(skb);
1174         }
1175 
1176         /* It ensures that the returned event matches the event data read from
1177          * the firmware file. At fist, it checks the length and then
1178          * the contents of the event.
1179          */
1180         if (skb->len != evt->plen) {
1181                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1182                        le16_to_cpu(cmd->opcode));
1183                 kfree_skb(skb);
1184                 return -EFAULT;
1185         }
1186 
1187         if (memcmp(skb->data, evt_param, evt->plen)) {
1188                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1189                        hdev->name, le16_to_cpu(cmd->opcode));
1190                 kfree_skb(skb);
1191                 return -EFAULT;
1192         }
1193         kfree_skb(skb);
1194 
1195         return 0;
1196 }
1197 
1198 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1199 
1200 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1201 {
1202         struct sk_buff *skb;
1203         struct hci_rp_read_bd_addr *rp;
1204 
1205         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1206                              HCI_INIT_TIMEOUT);
1207         if (IS_ERR(skb)) {
1208                 BT_ERR("%s reading Intel device address failed (%ld)",
1209                        hdev->name, PTR_ERR(skb));
1210                 return PTR_ERR(skb);
1211         }
1212 
1213         if (skb->len != sizeof(*rp)) {
1214                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1215                 kfree_skb(skb);
1216                 return -EIO;
1217         }
1218 
1219         rp = (struct hci_rp_read_bd_addr *) skb->data;
1220         if (rp->status) {
1221                 BT_ERR("%s Intel device address result failed (%02x)",
1222                        hdev->name, rp->status);
1223                 kfree_skb(skb);
1224                 return -bt_to_errno(rp->status);
1225         }
1226 
1227         /* For some Intel based controllers, the default Bluetooth device
1228          * address 00:03:19:9E:8B:00 can be found. These controllers are
1229          * fully operational, but have the danger of duplicate addresses
1230          * and that in turn can cause problems with Bluetooth operation.
1231          */
1232         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1233                 BT_ERR("%s found Intel default device address (%pMR)",
1234                        hdev->name, &rp->bdaddr);
1235                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1236         }
1237 
1238         kfree_skb(skb);
1239 
1240         return 0;
1241 }
1242 
1243 static int btusb_setup_intel(struct hci_dev *hdev)
1244 {
1245         struct sk_buff *skb;
1246         const struct firmware *fw;
1247         const u8 *fw_ptr;
1248         int disable_patch;
1249         struct intel_version *ver;
1250 
1251         const u8 mfg_enable[] = { 0x01, 0x00 };
1252         const u8 mfg_disable[] = { 0x00, 0x00 };
1253         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1254         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1255 
1256         BT_DBG("%s", hdev->name);
1257 
1258         /* The controller has a bug with the first HCI command sent to it
1259          * returning number of completed commands as zero. This would stall the
1260          * command processing in the Bluetooth core.
1261          *
1262          * As a workaround, send HCI Reset command first which will reset the
1263          * number of completed commands and allow normal command processing
1264          * from now on.
1265          */
1266         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1267         if (IS_ERR(skb)) {
1268                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1269                        hdev->name, PTR_ERR(skb));
1270                 return PTR_ERR(skb);
1271         }
1272         kfree_skb(skb);
1273 
1274         /* Read Intel specific controller version first to allow selection of
1275          * which firmware file to load.
1276          *
1277          * The returned information are hardware variant and revision plus
1278          * firmware variant, revision and build number.
1279          */
1280         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1281         if (IS_ERR(skb)) {
1282                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1283                        hdev->name, PTR_ERR(skb));
1284                 return PTR_ERR(skb);
1285         }
1286 
1287         if (skb->len != sizeof(*ver)) {
1288                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1289                 kfree_skb(skb);
1290                 return -EIO;
1291         }
1292 
1293         ver = (struct intel_version *)skb->data;
1294         if (ver->status) {
1295                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1296                        ver->status);
1297                 kfree_skb(skb);
1298                 return -bt_to_errno(ver->status);
1299         }
1300 
1301         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1302                 hdev->name, ver->hw_platform, ver->hw_variant,
1303                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1304                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1305                 ver->fw_patch_num);
1306 
1307         /* fw_patch_num indicates the version of patch the device currently
1308          * have. If there is no patch data in the device, it is always 0x00.
1309          * So, if it is other than 0x00, no need to patch the deivce again.
1310          */
1311         if (ver->fw_patch_num) {
1312                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1313                         hdev->name, ver->fw_patch_num);
1314                 kfree_skb(skb);
1315                 btusb_check_bdaddr_intel(hdev);
1316                 return 0;
1317         }
1318 
1319         /* Opens the firmware patch file based on the firmware version read
1320          * from the controller. If it fails to open the matching firmware
1321          * patch file, it tries to open the default firmware patch file.
1322          * If no patch file is found, allow the device to operate without
1323          * a patch.
1324          */
1325         fw = btusb_setup_intel_get_fw(hdev, ver);
1326         if (!fw) {
1327                 kfree_skb(skb);
1328                 btusb_check_bdaddr_intel(hdev);
1329                 return 0;
1330         }
1331         fw_ptr = fw->data;
1332 
1333         /* This Intel specific command enables the manufacturer mode of the
1334          * controller.
1335          *
1336          * Only while this mode is enabled, the driver can download the
1337          * firmware patch data and configuration parameters.
1338          */
1339         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1340         if (IS_ERR(skb)) {
1341                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1342                        hdev->name, PTR_ERR(skb));
1343                 release_firmware(fw);
1344                 return PTR_ERR(skb);
1345         }
1346 
1347         if (skb->data[0]) {
1348                 u8 evt_status = skb->data[0];
1349                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1350                        hdev->name, evt_status);
1351                 kfree_skb(skb);
1352                 release_firmware(fw);
1353                 return -bt_to_errno(evt_status);
1354         }
1355         kfree_skb(skb);
1356 
1357         disable_patch = 1;
1358 
1359         /* The firmware data file consists of list of Intel specific HCI
1360          * commands and its expected events. The first byte indicates the
1361          * type of the message, either HCI command or HCI event.
1362          *
1363          * It reads the command and its expected event from the firmware file,
1364          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1365          * the returned event is compared with the event read from the firmware
1366          * file and it will continue until all the messages are downloaded to
1367          * the controller.
1368          *
1369          * Once the firmware patching is completed successfully,
1370          * the manufacturer mode is disabled with reset and activating the
1371          * downloaded patch.
1372          *
1373          * If the firmware patching fails, the manufacturer mode is
1374          * disabled with reset and deactivating the patch.
1375          *
1376          * If the default patch file is used, no reset is done when disabling
1377          * the manufacturer.
1378          */
1379         while (fw->size > fw_ptr - fw->data) {
1380                 int ret;
1381 
1382                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1383                                                  &disable_patch);
1384                 if (ret < 0)
1385                         goto exit_mfg_deactivate;
1386         }
1387 
1388         release_firmware(fw);
1389 
1390         if (disable_patch)
1391                 goto exit_mfg_disable;
1392 
1393         /* Patching completed successfully and disable the manufacturer mode
1394          * with reset and activate the downloaded firmware patches.
1395          */
1396         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1397                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1398         if (IS_ERR(skb)) {
1399                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1400                        hdev->name, PTR_ERR(skb));
1401                 return PTR_ERR(skb);
1402         }
1403         kfree_skb(skb);
1404 
1405         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1406                 hdev->name);
1407 
1408         btusb_check_bdaddr_intel(hdev);
1409         return 0;
1410 
1411 exit_mfg_disable:
1412         /* Disable the manufacturer mode without reset */
1413         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1414                              HCI_INIT_TIMEOUT);
1415         if (IS_ERR(skb)) {
1416                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1417                        hdev->name, PTR_ERR(skb));
1418                 return PTR_ERR(skb);
1419         }
1420         kfree_skb(skb);
1421 
1422         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1423 
1424         btusb_check_bdaddr_intel(hdev);
1425         return 0;
1426 
1427 exit_mfg_deactivate:
1428         release_firmware(fw);
1429 
1430         /* Patching failed. Disable the manufacturer mode with reset and
1431          * deactivate the downloaded firmware patches.
1432          */
1433         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1434                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1435         if (IS_ERR(skb)) {
1436                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1437                        hdev->name, PTR_ERR(skb));
1438                 return PTR_ERR(skb);
1439         }
1440         kfree_skb(skb);
1441 
1442         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1443                 hdev->name);
1444 
1445         btusb_check_bdaddr_intel(hdev);
1446         return 0;
1447 }
1448 
1449 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1450 {
1451         struct sk_buff *skb;
1452         long ret;
1453 
1454         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1455         if (IS_ERR(skb)) {
1456                 ret = PTR_ERR(skb);
1457                 BT_ERR("%s: changing Intel device address failed (%ld)",
1458                         hdev->name, ret);
1459                 return ret;
1460         }
1461         kfree_skb(skb);
1462 
1463         return 0;
1464 }
1465 
1466 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1467                                     const bdaddr_t *bdaddr)
1468 {
1469         struct sk_buff *skb;
1470         u8 buf[8];
1471         long ret;
1472 
1473         buf[0] = 0xfe;
1474         buf[1] = sizeof(bdaddr_t);
1475         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1476 
1477         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1478         if (IS_ERR(skb)) {
1479                 ret = PTR_ERR(skb);
1480                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1481                        hdev->name, ret);
1482                 return ret;
1483         }
1484         kfree_skb(skb);
1485 
1486         return 0;
1487 }
1488 
1489 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1490 
1491 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1492 {
1493         struct btusb_data *data = hci_get_drvdata(hdev);
1494         struct usb_device *udev = data->udev;
1495         char fw_name[64];
1496         const struct firmware *fw;
1497         const u8 *fw_ptr;
1498         size_t fw_size;
1499         const struct hci_command_hdr *cmd;
1500         const u8 *cmd_param;
1501         u16 opcode;
1502         struct sk_buff *skb;
1503         struct hci_rp_read_local_version *ver;
1504         struct hci_rp_read_bd_addr *bda;
1505         long ret;
1506 
1507         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1508                  udev->product ? udev->product : "BCM",
1509                  le16_to_cpu(udev->descriptor.idVendor),
1510                  le16_to_cpu(udev->descriptor.idProduct));
1511 
1512         ret = request_firmware(&fw, fw_name, &hdev->dev);
1513         if (ret < 0) {
1514                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1515                 return 0;
1516         }
1517 
1518         /* Reset */
1519         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1520         if (IS_ERR(skb)) {
1521                 ret = PTR_ERR(skb);
1522                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1523                 goto done;
1524         }
1525         kfree_skb(skb);
1526 
1527         /* Read Local Version Info */
1528         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1529                              HCI_INIT_TIMEOUT);
1530         if (IS_ERR(skb)) {
1531                 ret = PTR_ERR(skb);
1532                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1533                         hdev->name, ret);
1534                 goto done;
1535         }
1536 
1537         if (skb->len != sizeof(*ver)) {
1538                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1539                         hdev->name);
1540                 kfree_skb(skb);
1541                 ret = -EIO;
1542                 goto done;
1543         }
1544 
1545         ver = (struct hci_rp_read_local_version *) skb->data;
1546         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1547                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1548                 ver->lmp_ver, ver->lmp_subver);
1549         kfree_skb(skb);
1550 
1551         /* Start Download */
1552         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1553         if (IS_ERR(skb)) {
1554                 ret = PTR_ERR(skb);
1555                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1556                         hdev->name, ret);
1557                 goto reset_fw;
1558         }
1559         kfree_skb(skb);
1560 
1561         /* 50 msec delay after Download Minidrv completes */
1562         msleep(50);
1563 
1564         fw_ptr = fw->data;
1565         fw_size = fw->size;
1566 
1567         while (fw_size >= sizeof(*cmd)) {
1568                 cmd = (struct hci_command_hdr *) fw_ptr;
1569                 fw_ptr += sizeof(*cmd);
1570                 fw_size -= sizeof(*cmd);
1571 
1572                 if (fw_size < cmd->plen) {
1573                         BT_ERR("%s: BCM: patch %s is corrupted",
1574                                 hdev->name, fw_name);
1575                         ret = -EINVAL;
1576                         goto reset_fw;
1577                 }
1578 
1579                 cmd_param = fw_ptr;
1580                 fw_ptr += cmd->plen;
1581                 fw_size -= cmd->plen;
1582 
1583                 opcode = le16_to_cpu(cmd->opcode);
1584 
1585                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1586                                      HCI_INIT_TIMEOUT);
1587                 if (IS_ERR(skb)) {
1588                         ret = PTR_ERR(skb);
1589                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1590                                 hdev->name, opcode, ret);
1591                         goto reset_fw;
1592                 }
1593                 kfree_skb(skb);
1594         }
1595 
1596         /* 250 msec delay after Launch Ram completes */
1597         msleep(250);
1598 
1599 reset_fw:
1600         /* Reset */
1601         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1602         if (IS_ERR(skb)) {
1603                 ret = PTR_ERR(skb);
1604                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1605                 goto done;
1606         }
1607         kfree_skb(skb);
1608 
1609         /* Read Local Version Info */
1610         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1611                              HCI_INIT_TIMEOUT);
1612         if (IS_ERR(skb)) {
1613                 ret = PTR_ERR(skb);
1614                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1615                         hdev->name, ret);
1616                 goto done;
1617         }
1618 
1619         if (skb->len != sizeof(*ver)) {
1620                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1621                         hdev->name);
1622                 kfree_skb(skb);
1623                 ret = -EIO;
1624                 goto done;
1625         }
1626 
1627         ver = (struct hci_rp_read_local_version *) skb->data;
1628         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1629                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1630                 ver->lmp_ver, ver->lmp_subver);
1631         kfree_skb(skb);
1632 
1633         /* Read BD Address */
1634         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1635                              HCI_INIT_TIMEOUT);
1636         if (IS_ERR(skb)) {
1637                 ret = PTR_ERR(skb);
1638                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1639                         hdev->name, ret);
1640                 goto done;
1641         }
1642 
1643         if (skb->len != sizeof(*bda)) {
1644                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1645                         hdev->name);
1646                 kfree_skb(skb);
1647                 ret = -EIO;
1648                 goto done;
1649         }
1650 
1651         bda = (struct hci_rp_read_bd_addr *) skb->data;
1652         if (bda->status) {
1653                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1654                        hdev->name, bda->status);
1655                 kfree_skb(skb);
1656                 ret = -bt_to_errno(bda->status);
1657                 goto done;
1658         }
1659 
1660         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1661          * with no configured address.
1662          */
1663         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1664                 BT_INFO("%s: BCM: using default device address (%pMR)",
1665                         hdev->name, &bda->bdaddr);
1666                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1667         }
1668 
1669         kfree_skb(skb);
1670 
1671 done:
1672         release_firmware(fw);
1673 
1674         return ret;
1675 }
1676 
1677 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1678 {
1679         struct sk_buff *skb;
1680         long ret;
1681 
1682         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1683         if (IS_ERR(skb)) {
1684                 ret = PTR_ERR(skb);
1685                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1686                         hdev->name, ret);
1687                 return ret;
1688         }
1689         kfree_skb(skb);
1690 
1691         return 0;
1692 }
1693 
1694 static int btusb_probe(struct usb_interface *intf,
1695                                 const struct usb_device_id *id)
1696 {
1697         struct usb_endpoint_descriptor *ep_desc;
1698         struct btusb_data *data;
1699         struct hci_dev *hdev;
1700         int i, err;
1701 
1702         BT_DBG("intf %p id %p", intf, id);
1703 
1704         /* interface numbers are hardcoded in the spec */
1705         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1706                 return -ENODEV;
1707 
1708         if (!id->driver_info) {
1709                 const struct usb_device_id *match;
1710                 match = usb_match_id(intf, blacklist_table);
1711                 if (match)
1712                         id = match;
1713         }
1714 
1715         if (id->driver_info == BTUSB_IGNORE)
1716                 return -ENODEV;
1717 
1718         if (id->driver_info & BTUSB_ATH3012) {
1719                 struct usb_device *udev = interface_to_usbdev(intf);
1720 
1721                 /* Old firmware would otherwise let ath3k driver load
1722                  * patch and sysconfig files */
1723                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1724                         return -ENODEV;
1725         }
1726 
1727         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1728         if (!data)
1729                 return -ENOMEM;
1730 
1731         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1732                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1733 
1734                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1735                         data->intr_ep = ep_desc;
1736                         continue;
1737                 }
1738 
1739                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1740                         data->bulk_tx_ep = ep_desc;
1741                         continue;
1742                 }
1743 
1744                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1745                         data->bulk_rx_ep = ep_desc;
1746                         continue;
1747                 }
1748         }
1749 
1750         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1751                 return -ENODEV;
1752 
1753         data->cmdreq_type = USB_TYPE_CLASS;
1754 
1755         data->udev = interface_to_usbdev(intf);
1756         data->intf = intf;
1757 
1758         spin_lock_init(&data->lock);
1759 
1760         INIT_WORK(&data->work, btusb_work);
1761         INIT_WORK(&data->waker, btusb_waker);
1762         spin_lock_init(&data->txlock);
1763 
1764         init_usb_anchor(&data->tx_anchor);
1765         init_usb_anchor(&data->intr_anchor);
1766         init_usb_anchor(&data->bulk_anchor);
1767         init_usb_anchor(&data->isoc_anchor);
1768         init_usb_anchor(&data->deferred);
1769 
1770         hdev = hci_alloc_dev();
1771         if (!hdev)
1772                 return -ENOMEM;
1773 
1774         hdev->bus = HCI_USB;
1775         hci_set_drvdata(hdev, data);
1776 
1777         data->hdev = hdev;
1778 
1779         SET_HCIDEV_DEV(hdev, &intf->dev);
1780 
1781         hdev->open   = btusb_open;
1782         hdev->close  = btusb_close;
1783         hdev->flush  = btusb_flush;
1784         hdev->send   = btusb_send_frame;
1785         hdev->notify = btusb_notify;
1786 
1787         if (id->driver_info & BTUSB_BCM92035)
1788                 hdev->setup = btusb_setup_bcm92035;
1789 
1790         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
1791                 hdev->setup = btusb_setup_bcm_patchram;
1792                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
1793         }
1794 
1795         if (id->driver_info & BTUSB_INTEL) {
1796                 hdev->setup = btusb_setup_intel;
1797                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
1798         }
1799 
1800         if (id->driver_info & BTUSB_MARVELL)
1801                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
1802 
1803         if (id->driver_info & BTUSB_INTEL_BOOT)
1804                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1805 
1806         /* Interface numbers are hardcoded in the specification */
1807         data->isoc = usb_ifnum_to_if(data->udev, 1);
1808 
1809         if (!reset)
1810                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1811 
1812         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1813                 if (!disable_scofix)
1814                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1815         }
1816 
1817         if (id->driver_info & BTUSB_BROKEN_ISOC)
1818                 data->isoc = NULL;
1819 
1820         if (id->driver_info & BTUSB_DIGIANSWER) {
1821                 data->cmdreq_type = USB_TYPE_VENDOR;
1822                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1823         }
1824 
1825         if (id->driver_info & BTUSB_CSR) {
1826                 struct usb_device *udev = data->udev;
1827                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1828 
1829                 /* Old firmware would otherwise execute USB reset */
1830                 if (bcdDevice < 0x117)
1831                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1832 
1833                 /* Fake CSR devices with broken commands */
1834                 if (bcdDevice <= 0x100)
1835                         hdev->setup = btusb_setup_csr;
1836         }
1837 
1838         if (id->driver_info & BTUSB_SNIFFER) {
1839                 struct usb_device *udev = data->udev;
1840 
1841                 /* New sniffer firmware has crippled HCI interface */
1842                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1843                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1844         }
1845 
1846         if (id->driver_info & BTUSB_INTEL_BOOT) {
1847                 /* A bug in the bootloader causes that interrupt interface is
1848                  * only enabled after receiving SetInterface(0, AltSetting=0).
1849                  */
1850                 err = usb_set_interface(data->udev, 0, 0);
1851                 if (err < 0) {
1852                         BT_ERR("failed to set interface 0, alt 0 %d", err);
1853                         hci_free_dev(hdev);
1854                         return err;
1855                 }
1856         }
1857 
1858         if (data->isoc) {
1859                 err = usb_driver_claim_interface(&btusb_driver,
1860                                                         data->isoc, data);
1861                 if (err < 0) {
1862                         hci_free_dev(hdev);
1863                         return err;
1864                 }
1865         }
1866 
1867         err = hci_register_dev(hdev);
1868         if (err < 0) {
1869                 hci_free_dev(hdev);
1870                 return err;
1871         }
1872 
1873         usb_set_intfdata(intf, data);
1874 
1875         return 0;
1876 }
1877 
1878 static void btusb_disconnect(struct usb_interface *intf)
1879 {
1880         struct btusb_data *data = usb_get_intfdata(intf);
1881         struct hci_dev *hdev;
1882 
1883         BT_DBG("intf %p", intf);
1884 
1885         if (!data)
1886                 return;
1887 
1888         hdev = data->hdev;
1889         usb_set_intfdata(data->intf, NULL);
1890 
1891         if (data->isoc)
1892                 usb_set_intfdata(data->isoc, NULL);
1893 
1894         hci_unregister_dev(hdev);
1895 
1896         if (intf == data->isoc)
1897                 usb_driver_release_interface(&btusb_driver, data->intf);
1898         else if (data->isoc)
1899                 usb_driver_release_interface(&btusb_driver, data->isoc);
1900 
1901         hci_free_dev(hdev);
1902 }
1903 
1904 #ifdef CONFIG_PM
1905 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1906 {
1907         struct btusb_data *data = usb_get_intfdata(intf);
1908 
1909         BT_DBG("intf %p", intf);
1910 
1911         if (data->suspend_count++)
1912                 return 0;
1913 
1914         spin_lock_irq(&data->txlock);
1915         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1916                 set_bit(BTUSB_SUSPENDING, &data->flags);
1917                 spin_unlock_irq(&data->txlock);
1918         } else {
1919                 spin_unlock_irq(&data->txlock);
1920                 data->suspend_count--;
1921                 return -EBUSY;
1922         }
1923 
1924         cancel_work_sync(&data->work);
1925 
1926         btusb_stop_traffic(data);
1927         usb_kill_anchored_urbs(&data->tx_anchor);
1928 
1929         return 0;
1930 }
1931 
1932 static void play_deferred(struct btusb_data *data)
1933 {
1934         struct urb *urb;
1935         int err;
1936 
1937         while ((urb = usb_get_from_anchor(&data->deferred))) {
1938                 err = usb_submit_urb(urb, GFP_ATOMIC);
1939                 if (err < 0)
1940                         break;
1941 
1942                 data->tx_in_flight++;
1943         }
1944         usb_scuttle_anchored_urbs(&data->deferred);
1945 }
1946 
1947 static int btusb_resume(struct usb_interface *intf)
1948 {
1949         struct btusb_data *data = usb_get_intfdata(intf);
1950         struct hci_dev *hdev = data->hdev;
1951         int err = 0;
1952 
1953         BT_DBG("intf %p", intf);
1954 
1955         if (--data->suspend_count)
1956                 return 0;
1957 
1958         if (!test_bit(HCI_RUNNING, &hdev->flags))
1959                 goto done;
1960 
1961         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1962                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1963                 if (err < 0) {
1964                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1965                         goto failed;
1966                 }
1967         }
1968 
1969         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1970                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1971                 if (err < 0) {
1972                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1973                         goto failed;
1974                 }
1975 
1976                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1977         }
1978 
1979         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1980                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1981                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1982                 else
1983                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1984         }
1985 
1986         spin_lock_irq(&data->txlock);
1987         play_deferred(data);
1988         clear_bit(BTUSB_SUSPENDING, &data->flags);
1989         spin_unlock_irq(&data->txlock);
1990         schedule_work(&data->work);
1991 
1992         return 0;
1993 
1994 failed:
1995         usb_scuttle_anchored_urbs(&data->deferred);
1996 done:
1997         spin_lock_irq(&data->txlock);
1998         clear_bit(BTUSB_SUSPENDING, &data->flags);
1999         spin_unlock_irq(&data->txlock);
2000 
2001         return err;
2002 }
2003 #endif
2004 
2005 static struct usb_driver btusb_driver = {
2006         .name           = "btusb",
2007         .probe          = btusb_probe,
2008         .disconnect     = btusb_disconnect,
2009 #ifdef CONFIG_PM
2010         .suspend        = btusb_suspend,
2011         .resume         = btusb_resume,
2012 #endif
2013         .id_table       = btusb_table,
2014         .supports_autosuspend = 1,
2015         .disable_hub_initiated_lpm = 1,
2016 };
2017 
2018 module_usb_driver(btusb_driver);
2019 
2020 module_param(disable_scofix, bool, 0644);
2021 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2022 
2023 module_param(force_scofix, bool, 0644);
2024 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2025 
2026 module_param(reset, bool, 0644);
2027 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2028 
2029 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2030 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2031 MODULE_VERSION(VERSION);
2032 MODULE_LICENSE("GPL");
2033 

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