Bluetooth: ath3k: Add support for a new AR3012 device
[pandora-kernel.git] / 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
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(0x0b05, 0x17b5) },
105         { USB_DEVICE(0x0b05, 0x17cb) },
106         { USB_DEVICE(0x04ca, 0x2003) },
107         { USB_DEVICE(0x0489, 0xe042) },
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
116         /* Belkin F8065bf - Broadcom based */
117         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
118
119         { }     /* Terminating entry */
120 };
121
122 MODULE_DEVICE_TABLE(usb, btusb_table);
123
124 static const struct usb_device_id blacklist_table[] = {
125         /* CSR BlueCore devices */
126         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
127
128         /* Broadcom BCM2033 without firmware */
129         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
130
131         /* Atheros 3011 with sflash firmware */
132         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
133         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
134         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
135         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
136         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
137         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
138
139         /* Atheros AR9285 Malbec with sflash firmware */
140         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
141
142         /* Atheros 3012 with sflash firmware */
143         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
144         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
145         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
146         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
147         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
148         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
149         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
150         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
151         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
152         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
153         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
154         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
155         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
156         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
157         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
158         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
159         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
160         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
161         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
162         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
163         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
164         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
165         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
166         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
167         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
168
169         /* Atheros AR5BBU12 with sflash firmware */
170         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
171
172         /* Atheros AR5BBU12 with sflash firmware */
173         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
174         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
175
176         /* Broadcom BCM2035 */
177         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
178         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
179         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
180
181         /* Broadcom BCM2045 */
182         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
183         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
184
185         /* IBM/Lenovo ThinkPad with Broadcom chip */
186         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
187         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
188
189         /* HP laptop with Broadcom chip */
190         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
191
192         /* Dell laptop with Broadcom chip */
193         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
194
195         /* Dell Wireless 370 and 410 devices */
196         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
197         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
198
199         /* Belkin F8T012 and F8T013 devices */
200         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
201         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
202
203         /* Asus WL-BTD202 device */
204         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
205
206         /* Kensington Bluetooth USB adapter */
207         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
208
209         /* RTX Telecom based adapters with buggy SCO support */
210         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
211         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
212
213         /* CONWISE Technology based adapters with buggy SCO support */
214         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
215
216         /* Digianswer devices */
217         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
218         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
219
220         /* CSR BlueCore Bluetooth Sniffer */
221         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
222
223         /* Frontline ComProbe Bluetooth Sniffer */
224         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
225
226         /* Intel Bluetooth device */
227         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
228
229         { }     /* Terminating entry */
230 };
231
232 #define BTUSB_MAX_ISOC_FRAMES   10
233
234 #define BTUSB_INTR_RUNNING      0
235 #define BTUSB_BULK_RUNNING      1
236 #define BTUSB_ISOC_RUNNING      2
237 #define BTUSB_SUSPENDING        3
238 #define BTUSB_DID_ISO_RESUME    4
239
240 struct btusb_data {
241         struct hci_dev       *hdev;
242         struct usb_device    *udev;
243         struct usb_interface *intf;
244         struct usb_interface *isoc;
245
246         spinlock_t lock;
247
248         unsigned long flags;
249
250         struct work_struct work;
251         struct work_struct waker;
252
253         struct usb_anchor tx_anchor;
254         struct usb_anchor intr_anchor;
255         struct usb_anchor bulk_anchor;
256         struct usb_anchor isoc_anchor;
257         struct usb_anchor deferred;
258         int tx_in_flight;
259         spinlock_t txlock;
260
261         struct usb_endpoint_descriptor *intr_ep;
262         struct usb_endpoint_descriptor *bulk_tx_ep;
263         struct usb_endpoint_descriptor *bulk_rx_ep;
264         struct usb_endpoint_descriptor *isoc_tx_ep;
265         struct usb_endpoint_descriptor *isoc_rx_ep;
266
267         __u8 cmdreq_type;
268
269         unsigned int sco_num;
270         int isoc_altsetting;
271         int suspend_count;
272 };
273
274 static int inc_tx(struct btusb_data *data)
275 {
276         unsigned long flags;
277         int rv;
278
279         spin_lock_irqsave(&data->txlock, flags);
280         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
281         if (!rv)
282                 data->tx_in_flight++;
283         spin_unlock_irqrestore(&data->txlock, flags);
284
285         return rv;
286 }
287
288 static void btusb_intr_complete(struct urb *urb)
289 {
290         struct hci_dev *hdev = urb->context;
291         struct btusb_data *data = hci_get_drvdata(hdev);
292         int err;
293
294         BT_DBG("%s urb %p status %d count %d", hdev->name,
295                                         urb, urb->status, urb->actual_length);
296
297         if (!test_bit(HCI_RUNNING, &hdev->flags))
298                 return;
299
300         if (urb->status == 0) {
301                 hdev->stat.byte_rx += urb->actual_length;
302
303                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
304                                                 urb->transfer_buffer,
305                                                 urb->actual_length) < 0) {
306                         BT_ERR("%s corrupted event packet", hdev->name);
307                         hdev->stat.err_rx++;
308                 }
309         }
310
311         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
312                 return;
313
314         usb_mark_last_busy(data->udev);
315         usb_anchor_urb(urb, &data->intr_anchor);
316
317         err = usb_submit_urb(urb, GFP_ATOMIC);
318         if (err < 0) {
319                 /* -EPERM: urb is being killed;
320                  * -ENODEV: device got disconnected */
321                 if (err != -EPERM && err != -ENODEV)
322                         BT_ERR("%s urb %p failed to resubmit (%d)",
323                                                 hdev->name, urb, -err);
324                 usb_unanchor_urb(urb);
325         }
326 }
327
328 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
329 {
330         struct btusb_data *data = hci_get_drvdata(hdev);
331         struct urb *urb;
332         unsigned char *buf;
333         unsigned int pipe;
334         int err, size;
335
336         BT_DBG("%s", hdev->name);
337
338         if (!data->intr_ep)
339                 return -ENODEV;
340
341         urb = usb_alloc_urb(0, mem_flags);
342         if (!urb)
343                 return -ENOMEM;
344
345         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
346
347         buf = kmalloc(size, mem_flags);
348         if (!buf) {
349                 usb_free_urb(urb);
350                 return -ENOMEM;
351         }
352
353         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
354
355         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
356                                                 btusb_intr_complete, hdev,
357                                                 data->intr_ep->bInterval);
358
359         urb->transfer_flags |= URB_FREE_BUFFER;
360
361         usb_anchor_urb(urb, &data->intr_anchor);
362
363         err = usb_submit_urb(urb, mem_flags);
364         if (err < 0) {
365                 if (err != -EPERM && err != -ENODEV)
366                         BT_ERR("%s urb %p submission failed (%d)",
367                                                 hdev->name, urb, -err);
368                 usb_unanchor_urb(urb);
369         }
370
371         usb_free_urb(urb);
372
373         return err;
374 }
375
376 static void btusb_bulk_complete(struct urb *urb)
377 {
378         struct hci_dev *hdev = urb->context;
379         struct btusb_data *data = hci_get_drvdata(hdev);
380         int err;
381
382         BT_DBG("%s urb %p status %d count %d", hdev->name,
383                                         urb, urb->status, urb->actual_length);
384
385         if (!test_bit(HCI_RUNNING, &hdev->flags))
386                 return;
387
388         if (urb->status == 0) {
389                 hdev->stat.byte_rx += urb->actual_length;
390
391                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
392                                                 urb->transfer_buffer,
393                                                 urb->actual_length) < 0) {
394                         BT_ERR("%s corrupted ACL packet", hdev->name);
395                         hdev->stat.err_rx++;
396                 }
397         }
398
399         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
400                 return;
401
402         usb_anchor_urb(urb, &data->bulk_anchor);
403         usb_mark_last_busy(data->udev);
404
405         err = usb_submit_urb(urb, GFP_ATOMIC);
406         if (err < 0) {
407                 /* -EPERM: urb is being killed;
408                  * -ENODEV: device got disconnected */
409                 if (err != -EPERM && err != -ENODEV)
410                         BT_ERR("%s urb %p failed to resubmit (%d)",
411                                                 hdev->name, urb, -err);
412                 usb_unanchor_urb(urb);
413         }
414 }
415
416 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
417 {
418         struct btusb_data *data = hci_get_drvdata(hdev);
419         struct urb *urb;
420         unsigned char *buf;
421         unsigned int pipe;
422         int err, size = HCI_MAX_FRAME_SIZE;
423
424         BT_DBG("%s", hdev->name);
425
426         if (!data->bulk_rx_ep)
427                 return -ENODEV;
428
429         urb = usb_alloc_urb(0, mem_flags);
430         if (!urb)
431                 return -ENOMEM;
432
433         buf = kmalloc(size, mem_flags);
434         if (!buf) {
435                 usb_free_urb(urb);
436                 return -ENOMEM;
437         }
438
439         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
440
441         usb_fill_bulk_urb(urb, data->udev, pipe,
442                                         buf, size, btusb_bulk_complete, hdev);
443
444         urb->transfer_flags |= URB_FREE_BUFFER;
445
446         usb_mark_last_busy(data->udev);
447         usb_anchor_urb(urb, &data->bulk_anchor);
448
449         err = usb_submit_urb(urb, mem_flags);
450         if (err < 0) {
451                 if (err != -EPERM && err != -ENODEV)
452                         BT_ERR("%s urb %p submission failed (%d)",
453                                                 hdev->name, urb, -err);
454                 usb_unanchor_urb(urb);
455         }
456
457         usb_free_urb(urb);
458
459         return err;
460 }
461
462 static void btusb_isoc_complete(struct urb *urb)
463 {
464         struct hci_dev *hdev = urb->context;
465         struct btusb_data *data = hci_get_drvdata(hdev);
466         int i, err;
467
468         BT_DBG("%s urb %p status %d count %d", hdev->name,
469                                         urb, urb->status, urb->actual_length);
470
471         if (!test_bit(HCI_RUNNING, &hdev->flags))
472                 return;
473
474         if (urb->status == 0) {
475                 for (i = 0; i < urb->number_of_packets; i++) {
476                         unsigned int offset = urb->iso_frame_desc[i].offset;
477                         unsigned int length = urb->iso_frame_desc[i].actual_length;
478
479                         if (urb->iso_frame_desc[i].status)
480                                 continue;
481
482                         hdev->stat.byte_rx += length;
483
484                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
485                                                 urb->transfer_buffer + offset,
486                                                                 length) < 0) {
487                                 BT_ERR("%s corrupted SCO packet", hdev->name);
488                                 hdev->stat.err_rx++;
489                         }
490                 }
491         }
492
493         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
494                 return;
495
496         usb_anchor_urb(urb, &data->isoc_anchor);
497
498         err = usb_submit_urb(urb, GFP_ATOMIC);
499         if (err < 0) {
500                 /* -EPERM: urb is being killed;
501                  * -ENODEV: device got disconnected */
502                 if (err != -EPERM && err != -ENODEV)
503                         BT_ERR("%s urb %p failed to resubmit (%d)",
504                                                 hdev->name, urb, -err);
505                 usb_unanchor_urb(urb);
506         }
507 }
508
509 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
510 {
511         int i, offset = 0;
512
513         BT_DBG("len %d mtu %d", len, mtu);
514
515         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
516                                         i++, offset += mtu, len -= mtu) {
517                 urb->iso_frame_desc[i].offset = offset;
518                 urb->iso_frame_desc[i].length = mtu;
519         }
520
521         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
522                 urb->iso_frame_desc[i].offset = offset;
523                 urb->iso_frame_desc[i].length = len;
524                 i++;
525         }
526
527         urb->number_of_packets = i;
528 }
529
530 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
531 {
532         struct btusb_data *data = hci_get_drvdata(hdev);
533         struct urb *urb;
534         unsigned char *buf;
535         unsigned int pipe;
536         int err, size;
537
538         BT_DBG("%s", hdev->name);
539
540         if (!data->isoc_rx_ep)
541                 return -ENODEV;
542
543         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
544         if (!urb)
545                 return -ENOMEM;
546
547         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
548                                                 BTUSB_MAX_ISOC_FRAMES;
549
550         buf = kmalloc(size, mem_flags);
551         if (!buf) {
552                 usb_free_urb(urb);
553                 return -ENOMEM;
554         }
555
556         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
557
558         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
559                                 hdev, data->isoc_rx_ep->bInterval);
560
561         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
562
563         __fill_isoc_descriptor(urb, size,
564                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
565
566         usb_anchor_urb(urb, &data->isoc_anchor);
567
568         err = usb_submit_urb(urb, mem_flags);
569         if (err < 0) {
570                 if (err != -EPERM && err != -ENODEV)
571                         BT_ERR("%s urb %p submission failed (%d)",
572                                                 hdev->name, urb, -err);
573                 usb_unanchor_urb(urb);
574         }
575
576         usb_free_urb(urb);
577
578         return err;
579 }
580
581 static void btusb_tx_complete(struct urb *urb)
582 {
583         struct sk_buff *skb = urb->context;
584         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
585         struct btusb_data *data = hci_get_drvdata(hdev);
586
587         BT_DBG("%s urb %p status %d count %d", hdev->name,
588                                         urb, urb->status, urb->actual_length);
589
590         if (!test_bit(HCI_RUNNING, &hdev->flags))
591                 goto done;
592
593         if (!urb->status)
594                 hdev->stat.byte_tx += urb->transfer_buffer_length;
595         else
596                 hdev->stat.err_tx++;
597
598 done:
599         spin_lock(&data->txlock);
600         data->tx_in_flight--;
601         spin_unlock(&data->txlock);
602
603         kfree(urb->setup_packet);
604
605         kfree_skb(skb);
606 }
607
608 static void btusb_isoc_tx_complete(struct urb *urb)
609 {
610         struct sk_buff *skb = urb->context;
611         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
612
613         BT_DBG("%s urb %p status %d count %d", hdev->name,
614                                         urb, urb->status, urb->actual_length);
615
616         if (!test_bit(HCI_RUNNING, &hdev->flags))
617                 goto done;
618
619         if (!urb->status)
620                 hdev->stat.byte_tx += urb->transfer_buffer_length;
621         else
622                 hdev->stat.err_tx++;
623
624 done:
625         kfree(urb->setup_packet);
626
627         kfree_skb(skb);
628 }
629
630 static int btusb_open(struct hci_dev *hdev)
631 {
632         struct btusb_data *data = hci_get_drvdata(hdev);
633         int err;
634
635         BT_DBG("%s", hdev->name);
636
637         err = usb_autopm_get_interface(data->intf);
638         if (err < 0)
639                 return err;
640
641         data->intf->needs_remote_wakeup = 1;
642
643         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
644                 goto done;
645
646         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
647                 goto done;
648
649         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
650         if (err < 0)
651                 goto failed;
652
653         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
654         if (err < 0) {
655                 usb_kill_anchored_urbs(&data->intr_anchor);
656                 goto failed;
657         }
658
659         set_bit(BTUSB_BULK_RUNNING, &data->flags);
660         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
661
662 done:
663         usb_autopm_put_interface(data->intf);
664         return 0;
665
666 failed:
667         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
668         clear_bit(HCI_RUNNING, &hdev->flags);
669         usb_autopm_put_interface(data->intf);
670         return err;
671 }
672
673 static void btusb_stop_traffic(struct btusb_data *data)
674 {
675         usb_kill_anchored_urbs(&data->intr_anchor);
676         usb_kill_anchored_urbs(&data->bulk_anchor);
677         usb_kill_anchored_urbs(&data->isoc_anchor);
678 }
679
680 static int btusb_close(struct hci_dev *hdev)
681 {
682         struct btusb_data *data = hci_get_drvdata(hdev);
683         int err;
684
685         BT_DBG("%s", hdev->name);
686
687         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
688                 return 0;
689
690         cancel_work_sync(&data->work);
691         cancel_work_sync(&data->waker);
692
693         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
694         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
695         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
696
697         btusb_stop_traffic(data);
698         err = usb_autopm_get_interface(data->intf);
699         if (err < 0)
700                 goto failed;
701
702         data->intf->needs_remote_wakeup = 0;
703         usb_autopm_put_interface(data->intf);
704
705 failed:
706         usb_scuttle_anchored_urbs(&data->deferred);
707         return 0;
708 }
709
710 static int btusb_flush(struct hci_dev *hdev)
711 {
712         struct btusb_data *data = hci_get_drvdata(hdev);
713
714         BT_DBG("%s", hdev->name);
715
716         usb_kill_anchored_urbs(&data->tx_anchor);
717
718         return 0;
719 }
720
721 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
722 {
723         struct btusb_data *data = hci_get_drvdata(hdev);
724         struct usb_ctrlrequest *dr;
725         struct urb *urb;
726         unsigned int pipe;
727         int err;
728
729         BT_DBG("%s", hdev->name);
730
731         if (!test_bit(HCI_RUNNING, &hdev->flags))
732                 return -EBUSY;
733
734         skb->dev = (void *) hdev;
735
736         switch (bt_cb(skb)->pkt_type) {
737         case HCI_COMMAND_PKT:
738                 urb = usb_alloc_urb(0, GFP_ATOMIC);
739                 if (!urb)
740                         return -ENOMEM;
741
742                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
743                 if (!dr) {
744                         usb_free_urb(urb);
745                         return -ENOMEM;
746                 }
747
748                 dr->bRequestType = data->cmdreq_type;
749                 dr->bRequest     = 0;
750                 dr->wIndex       = 0;
751                 dr->wValue       = 0;
752                 dr->wLength      = __cpu_to_le16(skb->len);
753
754                 pipe = usb_sndctrlpipe(data->udev, 0x00);
755
756                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
757                                 skb->data, skb->len, btusb_tx_complete, skb);
758
759                 hdev->stat.cmd_tx++;
760                 break;
761
762         case HCI_ACLDATA_PKT:
763                 if (!data->bulk_tx_ep)
764                         return -ENODEV;
765
766                 urb = usb_alloc_urb(0, GFP_ATOMIC);
767                 if (!urb)
768                         return -ENOMEM;
769
770                 pipe = usb_sndbulkpipe(data->udev,
771                                         data->bulk_tx_ep->bEndpointAddress);
772
773                 usb_fill_bulk_urb(urb, data->udev, pipe,
774                                 skb->data, skb->len, btusb_tx_complete, skb);
775
776                 hdev->stat.acl_tx++;
777                 break;
778
779         case HCI_SCODATA_PKT:
780                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
781                         return -ENODEV;
782
783                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
784                 if (!urb)
785                         return -ENOMEM;
786
787                 pipe = usb_sndisocpipe(data->udev,
788                                         data->isoc_tx_ep->bEndpointAddress);
789
790                 usb_fill_int_urb(urb, data->udev, pipe,
791                                 skb->data, skb->len, btusb_isoc_tx_complete,
792                                 skb, data->isoc_tx_ep->bInterval);
793
794                 urb->transfer_flags  = URB_ISO_ASAP;
795
796                 __fill_isoc_descriptor(urb, skb->len,
797                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
798
799                 hdev->stat.sco_tx++;
800                 goto skip_waking;
801
802         default:
803                 return -EILSEQ;
804         }
805
806         err = inc_tx(data);
807         if (err) {
808                 usb_anchor_urb(urb, &data->deferred);
809                 schedule_work(&data->waker);
810                 err = 0;
811                 goto done;
812         }
813
814 skip_waking:
815         usb_anchor_urb(urb, &data->tx_anchor);
816
817         err = usb_submit_urb(urb, GFP_ATOMIC);
818         if (err < 0) {
819                 if (err != -EPERM && err != -ENODEV)
820                         BT_ERR("%s urb %p submission failed (%d)",
821                                                 hdev->name, urb, -err);
822                 kfree(urb->setup_packet);
823                 usb_unanchor_urb(urb);
824         } else {
825                 usb_mark_last_busy(data->udev);
826         }
827
828 done:
829         usb_free_urb(urb);
830         return err;
831 }
832
833 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
834 {
835         struct btusb_data *data = hci_get_drvdata(hdev);
836
837         BT_DBG("%s evt %d", hdev->name, evt);
838
839         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
840                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
841                 schedule_work(&data->work);
842         }
843 }
844
845 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
846 {
847         struct btusb_data *data = hci_get_drvdata(hdev);
848         struct usb_interface *intf = data->isoc;
849         struct usb_endpoint_descriptor *ep_desc;
850         int i, err;
851
852         if (!data->isoc)
853                 return -ENODEV;
854
855         err = usb_set_interface(data->udev, 1, altsetting);
856         if (err < 0) {
857                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
858                 return err;
859         }
860
861         data->isoc_altsetting = altsetting;
862
863         data->isoc_tx_ep = NULL;
864         data->isoc_rx_ep = NULL;
865
866         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
867                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
868
869                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
870                         data->isoc_tx_ep = ep_desc;
871                         continue;
872                 }
873
874                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
875                         data->isoc_rx_ep = ep_desc;
876                         continue;
877                 }
878         }
879
880         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
881                 BT_ERR("%s invalid SCO descriptors", hdev->name);
882                 return -ENODEV;
883         }
884
885         return 0;
886 }
887
888 static void btusb_work(struct work_struct *work)
889 {
890         struct btusb_data *data = container_of(work, struct btusb_data, work);
891         struct hci_dev *hdev = data->hdev;
892         int new_alts;
893         int err;
894
895         if (data->sco_num > 0) {
896                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
897                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
898                         if (err < 0) {
899                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
900                                 usb_kill_anchored_urbs(&data->isoc_anchor);
901                                 return;
902                         }
903
904                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
905                 }
906
907                 if (hdev->voice_setting & 0x0020) {
908                         static const int alts[3] = { 2, 4, 5 };
909                         new_alts = alts[data->sco_num - 1];
910                 } else {
911                         new_alts = data->sco_num;
912                 }
913
914                 if (data->isoc_altsetting != new_alts) {
915                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
916                         usb_kill_anchored_urbs(&data->isoc_anchor);
917
918                         if (__set_isoc_interface(hdev, new_alts) < 0)
919                                 return;
920                 }
921
922                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
923                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
924                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
925                         else
926                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
927                 }
928         } else {
929                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
930                 usb_kill_anchored_urbs(&data->isoc_anchor);
931
932                 __set_isoc_interface(hdev, 0);
933                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
934                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
935         }
936 }
937
938 static void btusb_waker(struct work_struct *work)
939 {
940         struct btusb_data *data = container_of(work, struct btusb_data, waker);
941         int err;
942
943         err = usb_autopm_get_interface(data->intf);
944         if (err < 0)
945                 return;
946
947         usb_autopm_put_interface(data->intf);
948 }
949
950 static int btusb_setup_bcm92035(struct hci_dev *hdev)
951 {
952         struct sk_buff *skb;
953         u8 val = 0x00;
954
955         BT_DBG("%s", hdev->name);
956
957         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
958         if (IS_ERR(skb))
959                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
960         else
961                 kfree_skb(skb);
962
963         return 0;
964 }
965
966 struct intel_version {
967         u8 status;
968         u8 hw_platform;
969         u8 hw_variant;
970         u8 hw_revision;
971         u8 fw_variant;
972         u8 fw_revision;
973         u8 fw_build_num;
974         u8 fw_build_ww;
975         u8 fw_build_yy;
976         u8 fw_patch_num;
977 } __packed;
978
979 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
980                                                 struct intel_version *ver)
981 {
982         const struct firmware *fw;
983         char fwname[64];
984         int ret;
985
986         snprintf(fwname, sizeof(fwname),
987                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
988                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
989                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
990                  ver->fw_build_ww, ver->fw_build_yy);
991
992         ret = request_firmware(&fw, fwname, &hdev->dev);
993         if (ret < 0) {
994                 if (ret == -EINVAL) {
995                         BT_ERR("%s Intel firmware file request failed (%d)",
996                                hdev->name, ret);
997                         return NULL;
998                 }
999
1000                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1001                        hdev->name, fwname, ret);
1002
1003                 /* If the correct firmware patch file is not found, use the
1004                  * default firmware patch file instead
1005                  */
1006                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1007                          ver->hw_platform, ver->hw_variant);
1008                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1009                         BT_ERR("%s failed to open default Intel fw file: %s",
1010                                hdev->name, fwname);
1011                         return NULL;
1012                 }
1013         }
1014
1015         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1016
1017         return fw;
1018 }
1019
1020 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1021                                       const struct firmware *fw,
1022                                       const u8 **fw_ptr, int *disable_patch)
1023 {
1024         struct sk_buff *skb;
1025         struct hci_command_hdr *cmd;
1026         const u8 *cmd_param;
1027         struct hci_event_hdr *evt = NULL;
1028         const u8 *evt_param = NULL;
1029         int remain = fw->size - (*fw_ptr - fw->data);
1030
1031         /* The first byte indicates the types of the patch command or event.
1032          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1033          * in the current firmware buffer doesn't start with 0x01 or
1034          * the size of remain buffer is smaller than HCI command header,
1035          * the firmware file is corrupted and it should stop the patching
1036          * process.
1037          */
1038         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1039                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1040                 return -EINVAL;
1041         }
1042         (*fw_ptr)++;
1043         remain--;
1044
1045         cmd = (struct hci_command_hdr *)(*fw_ptr);
1046         *fw_ptr += sizeof(*cmd);
1047         remain -= sizeof(*cmd);
1048
1049         /* Ensure that the remain firmware data is long enough than the length
1050          * of command parameter. If not, the firmware file is corrupted.
1051          */
1052         if (remain < cmd->plen) {
1053                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1054                 return -EFAULT;
1055         }
1056
1057         /* If there is a command that loads a patch in the firmware
1058          * file, then enable the patch upon success, otherwise just
1059          * disable the manufacturer mode, for example patch activation
1060          * is not required when the default firmware patch file is used
1061          * because there are no patch data to load.
1062          */
1063         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1064                 *disable_patch = 0;
1065
1066         cmd_param = *fw_ptr;
1067         *fw_ptr += cmd->plen;
1068         remain -= cmd->plen;
1069
1070         /* This reads the expected events when the above command is sent to the
1071          * device. Some vendor commands expects more than one events, for
1072          * example command status event followed by vendor specific event.
1073          * For this case, it only keeps the last expected event. so the command
1074          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1075          * last expected event.
1076          */
1077         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1078                 (*fw_ptr)++;
1079                 remain--;
1080
1081                 evt = (struct hci_event_hdr *)(*fw_ptr);
1082                 *fw_ptr += sizeof(*evt);
1083                 remain -= sizeof(*evt);
1084
1085                 if (remain < evt->plen) {
1086                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1087                                hdev->name);
1088                         return -EFAULT;
1089                 }
1090
1091                 evt_param = *fw_ptr;
1092                 *fw_ptr += evt->plen;
1093                 remain -= evt->plen;
1094         }
1095
1096         /* Every HCI commands in the firmware file has its correspond event.
1097          * If event is not found or remain is smaller than zero, the firmware
1098          * file is corrupted.
1099          */
1100         if (!evt || !evt_param || remain < 0) {
1101                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1102                 return -EFAULT;
1103         }
1104
1105         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1106                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1107         if (IS_ERR(skb)) {
1108                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1109                        hdev->name, cmd->opcode, PTR_ERR(skb));
1110                 return PTR_ERR(skb);
1111         }
1112
1113         /* It ensures that the returned event matches the event data read from
1114          * the firmware file. At fist, it checks the length and then
1115          * the contents of the event.
1116          */
1117         if (skb->len != evt->plen) {
1118                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1119                        le16_to_cpu(cmd->opcode));
1120                 kfree_skb(skb);
1121                 return -EFAULT;
1122         }
1123
1124         if (memcmp(skb->data, evt_param, evt->plen)) {
1125                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1126                        hdev->name, le16_to_cpu(cmd->opcode));
1127                 kfree_skb(skb);
1128                 return -EFAULT;
1129         }
1130         kfree_skb(skb);
1131
1132         return 0;
1133 }
1134
1135 static int btusb_setup_intel(struct hci_dev *hdev)
1136 {
1137         struct sk_buff *skb;
1138         const struct firmware *fw;
1139         const u8 *fw_ptr;
1140         int disable_patch;
1141         struct intel_version *ver;
1142
1143         const u8 mfg_enable[] = { 0x01, 0x00 };
1144         const u8 mfg_disable[] = { 0x00, 0x00 };
1145         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1146         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1147
1148         BT_DBG("%s", hdev->name);
1149
1150         /* The controller has a bug with the first HCI command sent to it
1151          * returning number of completed commands as zero. This would stall the
1152          * command processing in the Bluetooth core.
1153          *
1154          * As a workaround, send HCI Reset command first which will reset the
1155          * number of completed commands and allow normal command processing
1156          * from now on.
1157          */
1158         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1159         if (IS_ERR(skb)) {
1160                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1161                        hdev->name, PTR_ERR(skb));
1162                 return PTR_ERR(skb);
1163         }
1164         kfree_skb(skb);
1165
1166         /* Read Intel specific controller version first to allow selection of
1167          * which firmware file to load.
1168          *
1169          * The returned information are hardware variant and revision plus
1170          * firmware variant, revision and build number.
1171          */
1172         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1173         if (IS_ERR(skb)) {
1174                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1175                        hdev->name, PTR_ERR(skb));
1176                 return PTR_ERR(skb);
1177         }
1178
1179         if (skb->len != sizeof(*ver)) {
1180                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1181                 kfree_skb(skb);
1182                 return -EIO;
1183         }
1184
1185         ver = (struct intel_version *)skb->data;
1186         if (ver->status) {
1187                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1188                        ver->status);
1189                 kfree_skb(skb);
1190                 return -bt_to_errno(ver->status);
1191         }
1192
1193         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1194                 hdev->name, ver->hw_platform, ver->hw_variant,
1195                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1196                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1197                 ver->fw_patch_num);
1198
1199         /* fw_patch_num indicates the version of patch the device currently
1200          * have. If there is no patch data in the device, it is always 0x00.
1201          * So, if it is other than 0x00, no need to patch the deivce again.
1202          */
1203         if (ver->fw_patch_num) {
1204                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1205                         hdev->name, ver->fw_patch_num);
1206                 kfree_skb(skb);
1207                 return 0;
1208         }
1209
1210         /* Opens the firmware patch file based on the firmware version read
1211          * from the controller. If it fails to open the matching firmware
1212          * patch file, it tries to open the default firmware patch file.
1213          * If no patch file is found, allow the device to operate without
1214          * a patch.
1215          */
1216         fw = btusb_setup_intel_get_fw(hdev, ver);
1217         if (!fw) {
1218                 kfree_skb(skb);
1219                 return 0;
1220         }
1221         fw_ptr = fw->data;
1222
1223         /* This Intel specific command enables the manufacturer mode of the
1224          * controller.
1225          *
1226          * Only while this mode is enabled, the driver can download the
1227          * firmware patch data and configuration parameters.
1228          */
1229         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1230         if (IS_ERR(skb)) {
1231                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1232                        hdev->name, PTR_ERR(skb));
1233                 release_firmware(fw);
1234                 return PTR_ERR(skb);
1235         }
1236
1237         if (skb->data[0]) {
1238                 u8 evt_status = skb->data[0];
1239                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1240                        hdev->name, evt_status);
1241                 kfree_skb(skb);
1242                 release_firmware(fw);
1243                 return -bt_to_errno(evt_status);
1244         }
1245         kfree_skb(skb);
1246
1247         disable_patch = 1;
1248
1249         /* The firmware data file consists of list of Intel specific HCI
1250          * commands and its expected events. The first byte indicates the
1251          * type of the message, either HCI command or HCI event.
1252          *
1253          * It reads the command and its expected event from the firmware file,
1254          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1255          * the returned event is compared with the event read from the firmware
1256          * file and it will continue until all the messages are downloaded to
1257          * the controller.
1258          *
1259          * Once the firmware patching is completed successfully,
1260          * the manufacturer mode is disabled with reset and activating the
1261          * downloaded patch.
1262          *
1263          * If the firmware patching fails, the manufacturer mode is
1264          * disabled with reset and deactivating the patch.
1265          *
1266          * If the default patch file is used, no reset is done when disabling
1267          * the manufacturer.
1268          */
1269         while (fw->size > fw_ptr - fw->data) {
1270                 int ret;
1271
1272                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1273                                                  &disable_patch);
1274                 if (ret < 0)
1275                         goto exit_mfg_deactivate;
1276         }
1277
1278         release_firmware(fw);
1279
1280         if (disable_patch)
1281                 goto exit_mfg_disable;
1282
1283         /* Patching completed successfully and disable the manufacturer mode
1284          * with reset and activate the downloaded firmware patches.
1285          */
1286         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1287                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1288         if (IS_ERR(skb)) {
1289                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1290                        hdev->name, PTR_ERR(skb));
1291                 return PTR_ERR(skb);
1292         }
1293         kfree_skb(skb);
1294
1295         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1296                 hdev->name);
1297
1298         return 0;
1299
1300 exit_mfg_disable:
1301         /* Disable the manufacturer mode without reset */
1302         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1303                              HCI_INIT_TIMEOUT);
1304         if (IS_ERR(skb)) {
1305                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1306                        hdev->name, PTR_ERR(skb));
1307                 return PTR_ERR(skb);
1308         }
1309         kfree_skb(skb);
1310
1311         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1312         return 0;
1313
1314 exit_mfg_deactivate:
1315         release_firmware(fw);
1316
1317         /* Patching failed. Disable the manufacturer mode with reset and
1318          * deactivate the downloaded firmware patches.
1319          */
1320         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1321                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1322         if (IS_ERR(skb)) {
1323                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1324                        hdev->name, PTR_ERR(skb));
1325                 return PTR_ERR(skb);
1326         }
1327         kfree_skb(skb);
1328
1329         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1330                 hdev->name);
1331
1332         return 0;
1333 }
1334
1335 static int btusb_probe(struct usb_interface *intf,
1336                                 const struct usb_device_id *id)
1337 {
1338         struct usb_endpoint_descriptor *ep_desc;
1339         struct btusb_data *data;
1340         struct hci_dev *hdev;
1341         int i, err;
1342
1343         BT_DBG("intf %p id %p", intf, id);
1344
1345         /* interface numbers are hardcoded in the spec */
1346         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1347                 return -ENODEV;
1348
1349         if (!id->driver_info) {
1350                 const struct usb_device_id *match;
1351                 match = usb_match_id(intf, blacklist_table);
1352                 if (match)
1353                         id = match;
1354         }
1355
1356         if (id->driver_info == BTUSB_IGNORE)
1357                 return -ENODEV;
1358
1359         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1360                 return -ENODEV;
1361
1362         if (ignore_csr && id->driver_info & BTUSB_CSR)
1363                 return -ENODEV;
1364
1365         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1366                 return -ENODEV;
1367
1368         if (id->driver_info & BTUSB_ATH3012) {
1369                 struct usb_device *udev = interface_to_usbdev(intf);
1370
1371                 /* Old firmware would otherwise let ath3k driver load
1372                  * patch and sysconfig files */
1373                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1374                         return -ENODEV;
1375         }
1376
1377         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1378         if (!data)
1379                 return -ENOMEM;
1380
1381         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1382                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1383
1384                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1385                         data->intr_ep = ep_desc;
1386                         continue;
1387                 }
1388
1389                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1390                         data->bulk_tx_ep = ep_desc;
1391                         continue;
1392                 }
1393
1394                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1395                         data->bulk_rx_ep = ep_desc;
1396                         continue;
1397                 }
1398         }
1399
1400         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1401                 return -ENODEV;
1402
1403         data->cmdreq_type = USB_TYPE_CLASS;
1404
1405         data->udev = interface_to_usbdev(intf);
1406         data->intf = intf;
1407
1408         spin_lock_init(&data->lock);
1409
1410         INIT_WORK(&data->work, btusb_work);
1411         INIT_WORK(&data->waker, btusb_waker);
1412         spin_lock_init(&data->txlock);
1413
1414         init_usb_anchor(&data->tx_anchor);
1415         init_usb_anchor(&data->intr_anchor);
1416         init_usb_anchor(&data->bulk_anchor);
1417         init_usb_anchor(&data->isoc_anchor);
1418         init_usb_anchor(&data->deferred);
1419
1420         hdev = hci_alloc_dev();
1421         if (!hdev)
1422                 return -ENOMEM;
1423
1424         hdev->bus = HCI_USB;
1425         hci_set_drvdata(hdev, data);
1426
1427         data->hdev = hdev;
1428
1429         SET_HCIDEV_DEV(hdev, &intf->dev);
1430
1431         hdev->open   = btusb_open;
1432         hdev->close  = btusb_close;
1433         hdev->flush  = btusb_flush;
1434         hdev->send   = btusb_send_frame;
1435         hdev->notify = btusb_notify;
1436
1437         if (id->driver_info & BTUSB_BCM92035)
1438                 hdev->setup = btusb_setup_bcm92035;
1439
1440         if (id->driver_info & BTUSB_INTEL)
1441                 hdev->setup = btusb_setup_intel;
1442
1443         /* Interface numbers are hardcoded in the specification */
1444         data->isoc = usb_ifnum_to_if(data->udev, 1);
1445
1446         if (!reset)
1447                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1448
1449         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1450                 if (!disable_scofix)
1451                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1452         }
1453
1454         if (id->driver_info & BTUSB_BROKEN_ISOC)
1455                 data->isoc = NULL;
1456
1457         if (id->driver_info & BTUSB_DIGIANSWER) {
1458                 data->cmdreq_type = USB_TYPE_VENDOR;
1459                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1460         }
1461
1462         if (id->driver_info & BTUSB_CSR) {
1463                 struct usb_device *udev = data->udev;
1464
1465                 /* Old firmware would otherwise execute USB reset */
1466                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1467                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1468         }
1469
1470         if (id->driver_info & BTUSB_SNIFFER) {
1471                 struct usb_device *udev = data->udev;
1472
1473                 /* New sniffer firmware has crippled HCI interface */
1474                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1475                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1476
1477                 data->isoc = NULL;
1478         }
1479
1480         if (data->isoc) {
1481                 err = usb_driver_claim_interface(&btusb_driver,
1482                                                         data->isoc, data);
1483                 if (err < 0) {
1484                         hci_free_dev(hdev);
1485                         return err;
1486                 }
1487         }
1488
1489         err = hci_register_dev(hdev);
1490         if (err < 0) {
1491                 hci_free_dev(hdev);
1492                 return err;
1493         }
1494
1495         usb_set_intfdata(intf, data);
1496
1497         return 0;
1498 }
1499
1500 static void btusb_disconnect(struct usb_interface *intf)
1501 {
1502         struct btusb_data *data = usb_get_intfdata(intf);
1503         struct hci_dev *hdev;
1504
1505         BT_DBG("intf %p", intf);
1506
1507         if (!data)
1508                 return;
1509
1510         hdev = data->hdev;
1511         usb_set_intfdata(data->intf, NULL);
1512
1513         if (data->isoc)
1514                 usb_set_intfdata(data->isoc, NULL);
1515
1516         hci_unregister_dev(hdev);
1517
1518         if (intf == data->isoc)
1519                 usb_driver_release_interface(&btusb_driver, data->intf);
1520         else if (data->isoc)
1521                 usb_driver_release_interface(&btusb_driver, data->isoc);
1522
1523         hci_free_dev(hdev);
1524 }
1525
1526 #ifdef CONFIG_PM
1527 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1528 {
1529         struct btusb_data *data = usb_get_intfdata(intf);
1530
1531         BT_DBG("intf %p", intf);
1532
1533         if (data->suspend_count++)
1534                 return 0;
1535
1536         spin_lock_irq(&data->txlock);
1537         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1538                 set_bit(BTUSB_SUSPENDING, &data->flags);
1539                 spin_unlock_irq(&data->txlock);
1540         } else {
1541                 spin_unlock_irq(&data->txlock);
1542                 data->suspend_count--;
1543                 return -EBUSY;
1544         }
1545
1546         cancel_work_sync(&data->work);
1547
1548         btusb_stop_traffic(data);
1549         usb_kill_anchored_urbs(&data->tx_anchor);
1550
1551         return 0;
1552 }
1553
1554 static void play_deferred(struct btusb_data *data)
1555 {
1556         struct urb *urb;
1557         int err;
1558
1559         while ((urb = usb_get_from_anchor(&data->deferred))) {
1560                 err = usb_submit_urb(urb, GFP_ATOMIC);
1561                 if (err < 0)
1562                         break;
1563
1564                 data->tx_in_flight++;
1565         }
1566         usb_scuttle_anchored_urbs(&data->deferred);
1567 }
1568
1569 static int btusb_resume(struct usb_interface *intf)
1570 {
1571         struct btusb_data *data = usb_get_intfdata(intf);
1572         struct hci_dev *hdev = data->hdev;
1573         int err = 0;
1574
1575         BT_DBG("intf %p", intf);
1576
1577         if (--data->suspend_count)
1578                 return 0;
1579
1580         if (!test_bit(HCI_RUNNING, &hdev->flags))
1581                 goto done;
1582
1583         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1584                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1585                 if (err < 0) {
1586                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1587                         goto failed;
1588                 }
1589         }
1590
1591         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1592                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1593                 if (err < 0) {
1594                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1595                         goto failed;
1596                 }
1597
1598                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1599         }
1600
1601         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1602                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1603                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1604                 else
1605                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1606         }
1607
1608         spin_lock_irq(&data->txlock);
1609         play_deferred(data);
1610         clear_bit(BTUSB_SUSPENDING, &data->flags);
1611         spin_unlock_irq(&data->txlock);
1612         schedule_work(&data->work);
1613
1614         return 0;
1615
1616 failed:
1617         usb_scuttle_anchored_urbs(&data->deferred);
1618 done:
1619         spin_lock_irq(&data->txlock);
1620         clear_bit(BTUSB_SUSPENDING, &data->flags);
1621         spin_unlock_irq(&data->txlock);
1622
1623         return err;
1624 }
1625 #endif
1626
1627 static struct usb_driver btusb_driver = {
1628         .name           = "btusb",
1629         .probe          = btusb_probe,
1630         .disconnect     = btusb_disconnect,
1631 #ifdef CONFIG_PM
1632         .suspend        = btusb_suspend,
1633         .resume         = btusb_resume,
1634 #endif
1635         .id_table       = btusb_table,
1636         .supports_autosuspend = 1,
1637         .disable_hub_initiated_lpm = 1,
1638 };
1639
1640 module_usb_driver(btusb_driver);
1641
1642 module_param(ignore_dga, bool, 0644);
1643 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1644
1645 module_param(ignore_csr, bool, 0644);
1646 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1647
1648 module_param(ignore_sniffer, bool, 0644);
1649 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1650
1651 module_param(disable_scofix, bool, 0644);
1652 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1653
1654 module_param(force_scofix, bool, 0644);
1655 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1656
1657 module_param(reset, bool, 0644);
1658 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1659
1660 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1661 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1662 MODULE_VERSION(VERSION);
1663 MODULE_LICENSE("GPL");