Bluetooth: hci_vhci.c: removes unnecessary semicolon
[linux-3.10.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
27 #include <net/bluetooth/bluetooth.h>
28 #include <net/bluetooth/hci_core.h>
29
30 #define VERSION "0.6"
31
32 static bool ignore_dga;
33 static bool ignore_csr;
34 static bool ignore_sniffer;
35 static bool disable_scofix;
36 static bool force_scofix;
37
38 static bool reset = 1;
39
40 static struct usb_driver btusb_driver;
41
42 #define BTUSB_IGNORE            0x01
43 #define BTUSB_DIGIANSWER        0x02
44 #define BTUSB_CSR               0x04
45 #define BTUSB_SNIFFER           0x08
46 #define BTUSB_BCM92035          0x10
47 #define BTUSB_BROKEN_ISOC       0x20
48 #define BTUSB_WRONG_SCO_MTU     0x40
49 #define BTUSB_ATH3012           0x80
50
51 static struct usb_device_id btusb_table[] = {
52         /* Generic Bluetooth USB device */
53         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
54
55         /* Broadcom SoftSailing reporting vendor specific */
56         { USB_DEVICE(0x0a5c, 0x21e1) },
57
58         /* Apple MacBookPro 7,1 */
59         { USB_DEVICE(0x05ac, 0x8213) },
60
61         /* Apple iMac11,1 */
62         { USB_DEVICE(0x05ac, 0x8215) },
63
64         /* Apple MacBookPro6,2 */
65         { USB_DEVICE(0x05ac, 0x8218) },
66
67         /* Apple MacBookAir3,1, MacBookAir3,2 */
68         { USB_DEVICE(0x05ac, 0x821b) },
69
70         /* Apple MacBookAir4,1 */
71         { USB_DEVICE(0x05ac, 0x821f) },
72
73         /* Apple MacBookPro8,2 */
74         { USB_DEVICE(0x05ac, 0x821a) },
75
76         /* Apple MacMini5,1 */
77         { USB_DEVICE(0x05ac, 0x8281) },
78
79         /* AVM BlueFRITZ! USB v2.0 */
80         { USB_DEVICE(0x057c, 0x3800) },
81
82         /* Bluetooth Ultraport Module from IBM */
83         { USB_DEVICE(0x04bf, 0x030a) },
84
85         /* ALPS Modules with non-standard id */
86         { USB_DEVICE(0x044e, 0x3001) },
87         { USB_DEVICE(0x044e, 0x3002) },
88
89         /* Ericsson with non-standard id */
90         { USB_DEVICE(0x0bdb, 0x1002) },
91
92         /* Canyon CN-BTU1 with HID interfaces */
93         { USB_DEVICE(0x0c10, 0x0000) },
94
95         /* Broadcom BCM20702A0 */
96         { USB_DEVICE(0x0489, 0xe042) },
97         { USB_DEVICE(0x0a5c, 0x21e3) },
98         { USB_DEVICE(0x0a5c, 0x21e6) },
99         { USB_DEVICE(0x0a5c, 0x21e8) },
100         { USB_DEVICE(0x0a5c, 0x21f3) },
101         { USB_DEVICE(0x413c, 0x8197) },
102
103         /* Foxconn - Hon Hai */
104         { USB_DEVICE(0x0489, 0xe033) },
105
106         { }     /* Terminating entry */
107 };
108
109 MODULE_DEVICE_TABLE(usb, btusb_table);
110
111 static struct usb_device_id blacklist_table[] = {
112         /* CSR BlueCore devices */
113         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
114
115         /* Broadcom BCM2033 without firmware */
116         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
117
118         /* Atheros 3011 with sflash firmware */
119         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
120         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
121         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
122         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
123         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
124
125         /* Atheros AR9285 Malbec with sflash firmware */
126         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
127
128         /* Atheros 3012 with sflash firmware */
129         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
130         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
131         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
132         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
133         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
134         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
135         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
136
137         /* Atheros AR5BBU12 with sflash firmware */
138         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
139
140         /* Atheros AR5BBU12 with sflash firmware */
141         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
142
143         /* Broadcom BCM2035 */
144         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
145         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
146         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
147
148         /* Broadcom BCM2045 */
149         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
150         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
151
152         /* IBM/Lenovo ThinkPad with Broadcom chip */
153         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
154         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156         /* HP laptop with Broadcom chip */
157         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
158
159         /* Dell laptop with Broadcom chip */
160         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
161
162         /* Dell Wireless 370 and 410 devices */
163         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
164         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
165
166         /* Belkin F8T012 and F8T013 devices */
167         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
168         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
169
170         /* Asus WL-BTD202 device */
171         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
172
173         /* Kensington Bluetooth USB adapter */
174         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
175
176         /* RTX Telecom based adapters with buggy SCO support */
177         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
178         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
179
180         /* CONWISE Technology based adapters with buggy SCO support */
181         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
182
183         /* Digianswer devices */
184         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
185         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
186
187         /* CSR BlueCore Bluetooth Sniffer */
188         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
189
190         /* Frontline ComProbe Bluetooth Sniffer */
191         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
192
193         { }     /* Terminating entry */
194 };
195
196 #define BTUSB_MAX_ISOC_FRAMES   10
197
198 #define BTUSB_INTR_RUNNING      0
199 #define BTUSB_BULK_RUNNING      1
200 #define BTUSB_ISOC_RUNNING      2
201 #define BTUSB_SUSPENDING        3
202 #define BTUSB_DID_ISO_RESUME    4
203
204 struct btusb_data {
205         struct hci_dev       *hdev;
206         struct usb_device    *udev;
207         struct usb_interface *intf;
208         struct usb_interface *isoc;
209
210         spinlock_t lock;
211
212         unsigned long flags;
213
214         struct work_struct work;
215         struct work_struct waker;
216
217         struct usb_anchor tx_anchor;
218         struct usb_anchor intr_anchor;
219         struct usb_anchor bulk_anchor;
220         struct usb_anchor isoc_anchor;
221         struct usb_anchor deferred;
222         int tx_in_flight;
223         spinlock_t txlock;
224
225         struct usb_endpoint_descriptor *intr_ep;
226         struct usb_endpoint_descriptor *bulk_tx_ep;
227         struct usb_endpoint_descriptor *bulk_rx_ep;
228         struct usb_endpoint_descriptor *isoc_tx_ep;
229         struct usb_endpoint_descriptor *isoc_rx_ep;
230
231         __u8 cmdreq_type;
232
233         unsigned int sco_num;
234         int isoc_altsetting;
235         int suspend_count;
236 };
237
238 static int inc_tx(struct btusb_data *data)
239 {
240         unsigned long flags;
241         int rv;
242
243         spin_lock_irqsave(&data->txlock, flags);
244         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
245         if (!rv)
246                 data->tx_in_flight++;
247         spin_unlock_irqrestore(&data->txlock, flags);
248
249         return rv;
250 }
251
252 static void btusb_intr_complete(struct urb *urb)
253 {
254         struct hci_dev *hdev = urb->context;
255         struct btusb_data *data = hci_get_drvdata(hdev);
256         int err;
257
258         BT_DBG("%s urb %p status %d count %d", hdev->name,
259                                         urb, urb->status, urb->actual_length);
260
261         if (!test_bit(HCI_RUNNING, &hdev->flags))
262                 return;
263
264         if (urb->status == 0) {
265                 hdev->stat.byte_rx += urb->actual_length;
266
267                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
268                                                 urb->transfer_buffer,
269                                                 urb->actual_length) < 0) {
270                         BT_ERR("%s corrupted event packet", hdev->name);
271                         hdev->stat.err_rx++;
272                 }
273         }
274
275         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
276                 return;
277
278         usb_mark_last_busy(data->udev);
279         usb_anchor_urb(urb, &data->intr_anchor);
280
281         err = usb_submit_urb(urb, GFP_ATOMIC);
282         if (err < 0) {
283                 /* -EPERM: urb is being killed;
284                  * -ENODEV: device got disconnected */
285                 if (err != -EPERM && err != -ENODEV)
286                         BT_ERR("%s urb %p failed to resubmit (%d)",
287                                                 hdev->name, urb, -err);
288                 usb_unanchor_urb(urb);
289         }
290 }
291
292 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
293 {
294         struct btusb_data *data = hci_get_drvdata(hdev);
295         struct urb *urb;
296         unsigned char *buf;
297         unsigned int pipe;
298         int err, size;
299
300         BT_DBG("%s", hdev->name);
301
302         if (!data->intr_ep)
303                 return -ENODEV;
304
305         urb = usb_alloc_urb(0, mem_flags);
306         if (!urb)
307                 return -ENOMEM;
308
309         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
310
311         buf = kmalloc(size, mem_flags);
312         if (!buf) {
313                 usb_free_urb(urb);
314                 return -ENOMEM;
315         }
316
317         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
318
319         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
320                                                 btusb_intr_complete, hdev,
321                                                 data->intr_ep->bInterval);
322
323         urb->transfer_flags |= URB_FREE_BUFFER;
324
325         usb_anchor_urb(urb, &data->intr_anchor);
326
327         err = usb_submit_urb(urb, mem_flags);
328         if (err < 0) {
329                 if (err != -EPERM && err != -ENODEV)
330                         BT_ERR("%s urb %p submission failed (%d)",
331                                                 hdev->name, urb, -err);
332                 usb_unanchor_urb(urb);
333         }
334
335         usb_free_urb(urb);
336
337         return err;
338 }
339
340 static void btusb_bulk_complete(struct urb *urb)
341 {
342         struct hci_dev *hdev = urb->context;
343         struct btusb_data *data = hci_get_drvdata(hdev);
344         int err;
345
346         BT_DBG("%s urb %p status %d count %d", hdev->name,
347                                         urb, urb->status, urb->actual_length);
348
349         if (!test_bit(HCI_RUNNING, &hdev->flags))
350                 return;
351
352         if (urb->status == 0) {
353                 hdev->stat.byte_rx += urb->actual_length;
354
355                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
356                                                 urb->transfer_buffer,
357                                                 urb->actual_length) < 0) {
358                         BT_ERR("%s corrupted ACL packet", hdev->name);
359                         hdev->stat.err_rx++;
360                 }
361         }
362
363         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
364                 return;
365
366         usb_anchor_urb(urb, &data->bulk_anchor);
367         usb_mark_last_busy(data->udev);
368
369         err = usb_submit_urb(urb, GFP_ATOMIC);
370         if (err < 0) {
371                 /* -EPERM: urb is being killed;
372                  * -ENODEV: device got disconnected */
373                 if (err != -EPERM && err != -ENODEV)
374                         BT_ERR("%s urb %p failed to resubmit (%d)",
375                                                 hdev->name, urb, -err);
376                 usb_unanchor_urb(urb);
377         }
378 }
379
380 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
381 {
382         struct btusb_data *data = hci_get_drvdata(hdev);
383         struct urb *urb;
384         unsigned char *buf;
385         unsigned int pipe;
386         int err, size = HCI_MAX_FRAME_SIZE;
387
388         BT_DBG("%s", hdev->name);
389
390         if (!data->bulk_rx_ep)
391                 return -ENODEV;
392
393         urb = usb_alloc_urb(0, mem_flags);
394         if (!urb)
395                 return -ENOMEM;
396
397         buf = kmalloc(size, mem_flags);
398         if (!buf) {
399                 usb_free_urb(urb);
400                 return -ENOMEM;
401         }
402
403         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
404
405         usb_fill_bulk_urb(urb, data->udev, pipe,
406                                         buf, size, btusb_bulk_complete, hdev);
407
408         urb->transfer_flags |= URB_FREE_BUFFER;
409
410         usb_mark_last_busy(data->udev);
411         usb_anchor_urb(urb, &data->bulk_anchor);
412
413         err = usb_submit_urb(urb, mem_flags);
414         if (err < 0) {
415                 if (err != -EPERM && err != -ENODEV)
416                         BT_ERR("%s urb %p submission failed (%d)",
417                                                 hdev->name, urb, -err);
418                 usb_unanchor_urb(urb);
419         }
420
421         usb_free_urb(urb);
422
423         return err;
424 }
425
426 static void btusb_isoc_complete(struct urb *urb)
427 {
428         struct hci_dev *hdev = urb->context;
429         struct btusb_data *data = hci_get_drvdata(hdev);
430         int i, err;
431
432         BT_DBG("%s urb %p status %d count %d", hdev->name,
433                                         urb, urb->status, urb->actual_length);
434
435         if (!test_bit(HCI_RUNNING, &hdev->flags))
436                 return;
437
438         if (urb->status == 0) {
439                 for (i = 0; i < urb->number_of_packets; i++) {
440                         unsigned int offset = urb->iso_frame_desc[i].offset;
441                         unsigned int length = urb->iso_frame_desc[i].actual_length;
442
443                         if (urb->iso_frame_desc[i].status)
444                                 continue;
445
446                         hdev->stat.byte_rx += length;
447
448                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
449                                                 urb->transfer_buffer + offset,
450                                                                 length) < 0) {
451                                 BT_ERR("%s corrupted SCO packet", hdev->name);
452                                 hdev->stat.err_rx++;
453                         }
454                 }
455         }
456
457         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
458                 return;
459
460         usb_anchor_urb(urb, &data->isoc_anchor);
461
462         err = usb_submit_urb(urb, GFP_ATOMIC);
463         if (err < 0) {
464                 /* -EPERM: urb is being killed;
465                  * -ENODEV: device got disconnected */
466                 if (err != -EPERM && err != -ENODEV)
467                         BT_ERR("%s urb %p failed to resubmit (%d)",
468                                                 hdev->name, urb, -err);
469                 usb_unanchor_urb(urb);
470         }
471 }
472
473 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
474 {
475         int i, offset = 0;
476
477         BT_DBG("len %d mtu %d", len, mtu);
478
479         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
480                                         i++, offset += mtu, len -= mtu) {
481                 urb->iso_frame_desc[i].offset = offset;
482                 urb->iso_frame_desc[i].length = mtu;
483         }
484
485         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
486                 urb->iso_frame_desc[i].offset = offset;
487                 urb->iso_frame_desc[i].length = len;
488                 i++;
489         }
490
491         urb->number_of_packets = i;
492 }
493
494 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
495 {
496         struct btusb_data *data = hci_get_drvdata(hdev);
497         struct urb *urb;
498         unsigned char *buf;
499         unsigned int pipe;
500         int err, size;
501
502         BT_DBG("%s", hdev->name);
503
504         if (!data->isoc_rx_ep)
505                 return -ENODEV;
506
507         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
508         if (!urb)
509                 return -ENOMEM;
510
511         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
512                                                 BTUSB_MAX_ISOC_FRAMES;
513
514         buf = kmalloc(size, mem_flags);
515         if (!buf) {
516                 usb_free_urb(urb);
517                 return -ENOMEM;
518         }
519
520         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
521
522         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
523                                 hdev, data->isoc_rx_ep->bInterval);
524
525         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
526
527         __fill_isoc_descriptor(urb, size,
528                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
529
530         usb_anchor_urb(urb, &data->isoc_anchor);
531
532         err = usb_submit_urb(urb, mem_flags);
533         if (err < 0) {
534                 if (err != -EPERM && err != -ENODEV)
535                         BT_ERR("%s urb %p submission failed (%d)",
536                                                 hdev->name, urb, -err);
537                 usb_unanchor_urb(urb);
538         }
539
540         usb_free_urb(urb);
541
542         return err;
543 }
544
545 static void btusb_tx_complete(struct urb *urb)
546 {
547         struct sk_buff *skb = urb->context;
548         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
549         struct btusb_data *data = hci_get_drvdata(hdev);
550
551         BT_DBG("%s urb %p status %d count %d", hdev->name,
552                                         urb, urb->status, urb->actual_length);
553
554         if (!test_bit(HCI_RUNNING, &hdev->flags))
555                 goto done;
556
557         if (!urb->status)
558                 hdev->stat.byte_tx += urb->transfer_buffer_length;
559         else
560                 hdev->stat.err_tx++;
561
562 done:
563         spin_lock(&data->txlock);
564         data->tx_in_flight--;
565         spin_unlock(&data->txlock);
566
567         kfree(urb->setup_packet);
568
569         kfree_skb(skb);
570 }
571
572 static void btusb_isoc_tx_complete(struct urb *urb)
573 {
574         struct sk_buff *skb = urb->context;
575         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
576
577         BT_DBG("%s urb %p status %d count %d", hdev->name,
578                                         urb, urb->status, urb->actual_length);
579
580         if (!test_bit(HCI_RUNNING, &hdev->flags))
581                 goto done;
582
583         if (!urb->status)
584                 hdev->stat.byte_tx += urb->transfer_buffer_length;
585         else
586                 hdev->stat.err_tx++;
587
588 done:
589         kfree(urb->setup_packet);
590
591         kfree_skb(skb);
592 }
593
594 static int btusb_open(struct hci_dev *hdev)
595 {
596         struct btusb_data *data = hci_get_drvdata(hdev);
597         int err;
598
599         BT_DBG("%s", hdev->name);
600
601         err = usb_autopm_get_interface(data->intf);
602         if (err < 0)
603                 return err;
604
605         data->intf->needs_remote_wakeup = 1;
606
607         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
608                 goto done;
609
610         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
611                 goto done;
612
613         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
614         if (err < 0)
615                 goto failed;
616
617         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
618         if (err < 0) {
619                 usb_kill_anchored_urbs(&data->intr_anchor);
620                 goto failed;
621         }
622
623         set_bit(BTUSB_BULK_RUNNING, &data->flags);
624         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
625
626 done:
627         usb_autopm_put_interface(data->intf);
628         return 0;
629
630 failed:
631         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
632         clear_bit(HCI_RUNNING, &hdev->flags);
633         usb_autopm_put_interface(data->intf);
634         return err;
635 }
636
637 static void btusb_stop_traffic(struct btusb_data *data)
638 {
639         usb_kill_anchored_urbs(&data->intr_anchor);
640         usb_kill_anchored_urbs(&data->bulk_anchor);
641         usb_kill_anchored_urbs(&data->isoc_anchor);
642 }
643
644 static int btusb_close(struct hci_dev *hdev)
645 {
646         struct btusb_data *data = hci_get_drvdata(hdev);
647         int err;
648
649         BT_DBG("%s", hdev->name);
650
651         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
652                 return 0;
653
654         cancel_work_sync(&data->work);
655         cancel_work_sync(&data->waker);
656
657         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
658         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
659         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
660
661         btusb_stop_traffic(data);
662         err = usb_autopm_get_interface(data->intf);
663         if (err < 0)
664                 goto failed;
665
666         data->intf->needs_remote_wakeup = 0;
667         usb_autopm_put_interface(data->intf);
668
669 failed:
670         usb_scuttle_anchored_urbs(&data->deferred);
671         return 0;
672 }
673
674 static int btusb_flush(struct hci_dev *hdev)
675 {
676         struct btusb_data *data = hci_get_drvdata(hdev);
677
678         BT_DBG("%s", hdev->name);
679
680         usb_kill_anchored_urbs(&data->tx_anchor);
681
682         return 0;
683 }
684
685 static int btusb_send_frame(struct sk_buff *skb)
686 {
687         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
688         struct btusb_data *data = hci_get_drvdata(hdev);
689         struct usb_ctrlrequest *dr;
690         struct urb *urb;
691         unsigned int pipe;
692         int err;
693
694         BT_DBG("%s", hdev->name);
695
696         if (!test_bit(HCI_RUNNING, &hdev->flags))
697                 return -EBUSY;
698
699         switch (bt_cb(skb)->pkt_type) {
700         case HCI_COMMAND_PKT:
701                 urb = usb_alloc_urb(0, GFP_ATOMIC);
702                 if (!urb)
703                         return -ENOMEM;
704
705                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
706                 if (!dr) {
707                         usb_free_urb(urb);
708                         return -ENOMEM;
709                 }
710
711                 dr->bRequestType = data->cmdreq_type;
712                 dr->bRequest     = 0;
713                 dr->wIndex       = 0;
714                 dr->wValue       = 0;
715                 dr->wLength      = __cpu_to_le16(skb->len);
716
717                 pipe = usb_sndctrlpipe(data->udev, 0x00);
718
719                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
720                                 skb->data, skb->len, btusb_tx_complete, skb);
721
722                 hdev->stat.cmd_tx++;
723                 break;
724
725         case HCI_ACLDATA_PKT:
726                 if (!data->bulk_tx_ep)
727                         return -ENODEV;
728
729                 urb = usb_alloc_urb(0, GFP_ATOMIC);
730                 if (!urb)
731                         return -ENOMEM;
732
733                 pipe = usb_sndbulkpipe(data->udev,
734                                         data->bulk_tx_ep->bEndpointAddress);
735
736                 usb_fill_bulk_urb(urb, data->udev, pipe,
737                                 skb->data, skb->len, btusb_tx_complete, skb);
738
739                 hdev->stat.acl_tx++;
740                 break;
741
742         case HCI_SCODATA_PKT:
743                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
744                         return -ENODEV;
745
746                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
747                 if (!urb)
748                         return -ENOMEM;
749
750                 pipe = usb_sndisocpipe(data->udev,
751                                         data->isoc_tx_ep->bEndpointAddress);
752
753                 usb_fill_int_urb(urb, data->udev, pipe,
754                                 skb->data, skb->len, btusb_isoc_tx_complete,
755                                 skb, data->isoc_tx_ep->bInterval);
756
757                 urb->transfer_flags  = URB_ISO_ASAP;
758
759                 __fill_isoc_descriptor(urb, skb->len,
760                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
761
762                 hdev->stat.sco_tx++;
763                 goto skip_waking;
764
765         default:
766                 return -EILSEQ;
767         }
768
769         err = inc_tx(data);
770         if (err) {
771                 usb_anchor_urb(urb, &data->deferred);
772                 schedule_work(&data->waker);
773                 err = 0;
774                 goto done;
775         }
776
777 skip_waking:
778         usb_anchor_urb(urb, &data->tx_anchor);
779
780         err = usb_submit_urb(urb, GFP_ATOMIC);
781         if (err < 0) {
782                 if (err != -EPERM && err != -ENODEV)
783                         BT_ERR("%s urb %p submission failed (%d)",
784                                                 hdev->name, urb, -err);
785                 kfree(urb->setup_packet);
786                 usb_unanchor_urb(urb);
787         } else {
788                 usb_mark_last_busy(data->udev);
789         }
790
791 done:
792         usb_free_urb(urb);
793         return err;
794 }
795
796 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
797 {
798         struct btusb_data *data = hci_get_drvdata(hdev);
799
800         BT_DBG("%s evt %d", hdev->name, evt);
801
802         if (hdev->conn_hash.sco_num != data->sco_num) {
803                 data->sco_num = hdev->conn_hash.sco_num;
804                 schedule_work(&data->work);
805         }
806 }
807
808 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
809 {
810         struct btusb_data *data = hci_get_drvdata(hdev);
811         struct usb_interface *intf = data->isoc;
812         struct usb_endpoint_descriptor *ep_desc;
813         int i, err;
814
815         if (!data->isoc)
816                 return -ENODEV;
817
818         err = usb_set_interface(data->udev, 1, altsetting);
819         if (err < 0) {
820                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
821                 return err;
822         }
823
824         data->isoc_altsetting = altsetting;
825
826         data->isoc_tx_ep = NULL;
827         data->isoc_rx_ep = NULL;
828
829         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
830                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
831
832                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
833                         data->isoc_tx_ep = ep_desc;
834                         continue;
835                 }
836
837                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
838                         data->isoc_rx_ep = ep_desc;
839                         continue;
840                 }
841         }
842
843         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
844                 BT_ERR("%s invalid SCO descriptors", hdev->name);
845                 return -ENODEV;
846         }
847
848         return 0;
849 }
850
851 static void btusb_work(struct work_struct *work)
852 {
853         struct btusb_data *data = container_of(work, struct btusb_data, work);
854         struct hci_dev *hdev = data->hdev;
855         int new_alts;
856         int err;
857
858         if (hdev->conn_hash.sco_num > 0) {
859                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
860                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
861                         if (err < 0) {
862                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
863                                 usb_kill_anchored_urbs(&data->isoc_anchor);
864                                 return;
865                         }
866
867                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
868                 }
869
870                 if (hdev->voice_setting & 0x0020) {
871                         static const int alts[3] = { 2, 4, 5 };
872                         new_alts = alts[hdev->conn_hash.sco_num - 1];
873                 } else {
874                         new_alts = hdev->conn_hash.sco_num;
875                 }
876
877                 if (data->isoc_altsetting != new_alts) {
878                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
879                         usb_kill_anchored_urbs(&data->isoc_anchor);
880
881                         if (__set_isoc_interface(hdev, new_alts) < 0)
882                                 return;
883                 }
884
885                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
886                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
887                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
888                         else
889                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
890                 }
891         } else {
892                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
893                 usb_kill_anchored_urbs(&data->isoc_anchor);
894
895                 __set_isoc_interface(hdev, 0);
896                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
897                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
898         }
899 }
900
901 static void btusb_waker(struct work_struct *work)
902 {
903         struct btusb_data *data = container_of(work, struct btusb_data, waker);
904         int err;
905
906         err = usb_autopm_get_interface(data->intf);
907         if (err < 0)
908                 return;
909
910         usb_autopm_put_interface(data->intf);
911 }
912
913 static int btusb_probe(struct usb_interface *intf,
914                                 const struct usb_device_id *id)
915 {
916         struct usb_endpoint_descriptor *ep_desc;
917         struct btusb_data *data;
918         struct hci_dev *hdev;
919         int i, err;
920
921         BT_DBG("intf %p id %p", intf, id);
922
923         /* interface numbers are hardcoded in the spec */
924         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
925                 return -ENODEV;
926
927         if (!id->driver_info) {
928                 const struct usb_device_id *match;
929                 match = usb_match_id(intf, blacklist_table);
930                 if (match)
931                         id = match;
932         }
933
934         if (id->driver_info == BTUSB_IGNORE)
935                 return -ENODEV;
936
937         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
938                 return -ENODEV;
939
940         if (ignore_csr && id->driver_info & BTUSB_CSR)
941                 return -ENODEV;
942
943         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
944                 return -ENODEV;
945
946         if (id->driver_info & BTUSB_ATH3012) {
947                 struct usb_device *udev = interface_to_usbdev(intf);
948
949                 /* Old firmware would otherwise let ath3k driver load
950                  * patch and sysconfig files */
951                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
952                         return -ENODEV;
953         }
954
955         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
956         if (!data)
957                 return -ENOMEM;
958
959         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
960                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
961
962                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
963                         data->intr_ep = ep_desc;
964                         continue;
965                 }
966
967                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
968                         data->bulk_tx_ep = ep_desc;
969                         continue;
970                 }
971
972                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
973                         data->bulk_rx_ep = ep_desc;
974                         continue;
975                 }
976         }
977
978         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
979                 return -ENODEV;
980
981         data->cmdreq_type = USB_TYPE_CLASS;
982
983         data->udev = interface_to_usbdev(intf);
984         data->intf = intf;
985
986         spin_lock_init(&data->lock);
987
988         INIT_WORK(&data->work, btusb_work);
989         INIT_WORK(&data->waker, btusb_waker);
990         spin_lock_init(&data->txlock);
991
992         init_usb_anchor(&data->tx_anchor);
993         init_usb_anchor(&data->intr_anchor);
994         init_usb_anchor(&data->bulk_anchor);
995         init_usb_anchor(&data->isoc_anchor);
996         init_usb_anchor(&data->deferred);
997
998         hdev = hci_alloc_dev();
999         if (!hdev)
1000                 return -ENOMEM;
1001
1002         hdev->bus = HCI_USB;
1003         hci_set_drvdata(hdev, data);
1004
1005         data->hdev = hdev;
1006
1007         SET_HCIDEV_DEV(hdev, &intf->dev);
1008
1009         hdev->open     = btusb_open;
1010         hdev->close    = btusb_close;
1011         hdev->flush    = btusb_flush;
1012         hdev->send     = btusb_send_frame;
1013         hdev->notify   = btusb_notify;
1014
1015         /* Interface numbers are hardcoded in the specification */
1016         data->isoc = usb_ifnum_to_if(data->udev, 1);
1017
1018         if (!reset)
1019                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1020
1021         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1022                 if (!disable_scofix)
1023                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1024         }
1025
1026         if (id->driver_info & BTUSB_BROKEN_ISOC)
1027                 data->isoc = NULL;
1028
1029         if (id->driver_info & BTUSB_DIGIANSWER) {
1030                 data->cmdreq_type = USB_TYPE_VENDOR;
1031                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1032         }
1033
1034         if (id->driver_info & BTUSB_CSR) {
1035                 struct usb_device *udev = data->udev;
1036
1037                 /* Old firmware would otherwise execute USB reset */
1038                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1039                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1040         }
1041
1042         if (id->driver_info & BTUSB_SNIFFER) {
1043                 struct usb_device *udev = data->udev;
1044
1045                 /* New sniffer firmware has crippled HCI interface */
1046                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1047                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1048
1049                 data->isoc = NULL;
1050         }
1051
1052         if (id->driver_info & BTUSB_BCM92035) {
1053                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1054                 struct sk_buff *skb;
1055
1056                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1057                 if (skb) {
1058                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1059                         skb_queue_tail(&hdev->driver_init, skb);
1060                 }
1061         }
1062
1063         if (data->isoc) {
1064                 err = usb_driver_claim_interface(&btusb_driver,
1065                                                         data->isoc, data);
1066                 if (err < 0) {
1067                         hci_free_dev(hdev);
1068                         return err;
1069                 }
1070         }
1071
1072         err = hci_register_dev(hdev);
1073         if (err < 0) {
1074                 hci_free_dev(hdev);
1075                 return err;
1076         }
1077
1078         usb_set_intfdata(intf, data);
1079
1080         return 0;
1081 }
1082
1083 static void btusb_disconnect(struct usb_interface *intf)
1084 {
1085         struct btusb_data *data = usb_get_intfdata(intf);
1086         struct hci_dev *hdev;
1087
1088         BT_DBG("intf %p", intf);
1089
1090         if (!data)
1091                 return;
1092
1093         hdev = data->hdev;
1094         usb_set_intfdata(data->intf, NULL);
1095
1096         if (data->isoc)
1097                 usb_set_intfdata(data->isoc, NULL);
1098
1099         hci_unregister_dev(hdev);
1100
1101         if (intf == data->isoc)
1102                 usb_driver_release_interface(&btusb_driver, data->intf);
1103         else if (data->isoc)
1104                 usb_driver_release_interface(&btusb_driver, data->isoc);
1105
1106         hci_free_dev(hdev);
1107 }
1108
1109 #ifdef CONFIG_PM
1110 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1111 {
1112         struct btusb_data *data = usb_get_intfdata(intf);
1113
1114         BT_DBG("intf %p", intf);
1115
1116         if (data->suspend_count++)
1117                 return 0;
1118
1119         spin_lock_irq(&data->txlock);
1120         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1121                 set_bit(BTUSB_SUSPENDING, &data->flags);
1122                 spin_unlock_irq(&data->txlock);
1123         } else {
1124                 spin_unlock_irq(&data->txlock);
1125                 data->suspend_count--;
1126                 return -EBUSY;
1127         }
1128
1129         cancel_work_sync(&data->work);
1130
1131         btusb_stop_traffic(data);
1132         usb_kill_anchored_urbs(&data->tx_anchor);
1133
1134         return 0;
1135 }
1136
1137 static void play_deferred(struct btusb_data *data)
1138 {
1139         struct urb *urb;
1140         int err;
1141
1142         while ((urb = usb_get_from_anchor(&data->deferred))) {
1143                 err = usb_submit_urb(urb, GFP_ATOMIC);
1144                 if (err < 0)
1145                         break;
1146
1147                 data->tx_in_flight++;
1148         }
1149         usb_scuttle_anchored_urbs(&data->deferred);
1150 }
1151
1152 static int btusb_resume(struct usb_interface *intf)
1153 {
1154         struct btusb_data *data = usb_get_intfdata(intf);
1155         struct hci_dev *hdev = data->hdev;
1156         int err = 0;
1157
1158         BT_DBG("intf %p", intf);
1159
1160         if (--data->suspend_count)
1161                 return 0;
1162
1163         if (!test_bit(HCI_RUNNING, &hdev->flags))
1164                 goto done;
1165
1166         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1167                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1168                 if (err < 0) {
1169                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1170                         goto failed;
1171                 }
1172         }
1173
1174         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1175                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1176                 if (err < 0) {
1177                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1178                         goto failed;
1179                 }
1180
1181                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1182         }
1183
1184         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1185                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1186                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1187                 else
1188                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1189         }
1190
1191         spin_lock_irq(&data->txlock);
1192         play_deferred(data);
1193         clear_bit(BTUSB_SUSPENDING, &data->flags);
1194         spin_unlock_irq(&data->txlock);
1195         schedule_work(&data->work);
1196
1197         return 0;
1198
1199 failed:
1200         usb_scuttle_anchored_urbs(&data->deferred);
1201 done:
1202         spin_lock_irq(&data->txlock);
1203         clear_bit(BTUSB_SUSPENDING, &data->flags);
1204         spin_unlock_irq(&data->txlock);
1205
1206         return err;
1207 }
1208 #endif
1209
1210 static struct usb_driver btusb_driver = {
1211         .name           = "btusb",
1212         .probe          = btusb_probe,
1213         .disconnect     = btusb_disconnect,
1214 #ifdef CONFIG_PM
1215         .suspend        = btusb_suspend,
1216         .resume         = btusb_resume,
1217 #endif
1218         .id_table       = btusb_table,
1219         .supports_autosuspend = 1,
1220         .disable_hub_initiated_lpm = 1,
1221 };
1222
1223 module_usb_driver(btusb_driver);
1224
1225 module_param(ignore_dga, bool, 0644);
1226 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1227
1228 module_param(ignore_csr, bool, 0644);
1229 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1230
1231 module_param(ignore_sniffer, bool, 0644);
1232 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1233
1234 module_param(disable_scofix, bool, 0644);
1235 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1236
1237 module_param(force_scofix, bool, 0644);
1238 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1239
1240 module_param(reset, bool, 0644);
1241 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1242
1243 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1244 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1245 MODULE_VERSION(VERSION);
1246 MODULE_LICENSE("GPL");