Merge commit '070680218379e15c1901f4bf21b98e3cbf12b527' into stable/for-linus-fixes-3.3
[linux-2.6.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/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #define VERSION "0.6"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE            0x01
51 #define BTUSB_DIGIANSWER        0x02
52 #define BTUSB_CSR               0x04
53 #define BTUSB_SNIFFER           0x08
54 #define BTUSB_BCM92035          0x10
55 #define BTUSB_BROKEN_ISOC       0x20
56 #define BTUSB_WRONG_SCO_MTU     0x40
57 #define BTUSB_ATH3012           0x80
58
59 static struct usb_device_id btusb_table[] = {
60         /* Generic Bluetooth USB device */
61         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
62
63         /* Broadcom SoftSailing reporting vendor specific */
64         { USB_DEVICE(0x05ac, 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(0x413c, 0x8197) },
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(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
121         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
122
123         /* Atheros AR9285 Malbec with sflash firmware */
124         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
125
126         /* Atheros 3012 with sflash firmware */
127         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
128
129         /* Atheros AR5BBU12 with sflash firmware */
130         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
131
132         /* Broadcom BCM2035 */
133         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
134         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
135         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
136
137         /* Broadcom BCM2045 */
138         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
139         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
140
141         /* IBM/Lenovo ThinkPad with Broadcom chip */
142         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
143         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
144
145         /* HP laptop with Broadcom chip */
146         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
147
148         /* Dell laptop with Broadcom chip */
149         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
150
151         /* Dell Wireless 370 and 410 devices */
152         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
153         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
154
155         /* Belkin F8T012 and F8T013 devices */
156         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
157         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
158
159         /* Asus WL-BTD202 device */
160         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
161
162         /* Kensington Bluetooth USB adapter */
163         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
164
165         /* RTX Telecom based adapters with buggy SCO support */
166         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
167         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
168
169         /* CONWISE Technology based adapters with buggy SCO support */
170         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
171
172         /* Digianswer devices */
173         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
174         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
175
176         /* CSR BlueCore Bluetooth Sniffer */
177         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
178
179         /* Frontline ComProbe Bluetooth Sniffer */
180         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
181
182         { }     /* Terminating entry */
183 };
184
185 #define BTUSB_MAX_ISOC_FRAMES   10
186
187 #define BTUSB_INTR_RUNNING      0
188 #define BTUSB_BULK_RUNNING      1
189 #define BTUSB_ISOC_RUNNING      2
190 #define BTUSB_SUSPENDING        3
191 #define BTUSB_DID_ISO_RESUME    4
192
193 struct btusb_data {
194         struct hci_dev       *hdev;
195         struct usb_device    *udev;
196         struct usb_interface *intf;
197         struct usb_interface *isoc;
198
199         spinlock_t lock;
200
201         unsigned long flags;
202
203         struct work_struct work;
204         struct work_struct waker;
205
206         struct usb_anchor tx_anchor;
207         struct usb_anchor intr_anchor;
208         struct usb_anchor bulk_anchor;
209         struct usb_anchor isoc_anchor;
210         struct usb_anchor deferred;
211         int tx_in_flight;
212         spinlock_t txlock;
213
214         struct usb_endpoint_descriptor *intr_ep;
215         struct usb_endpoint_descriptor *bulk_tx_ep;
216         struct usb_endpoint_descriptor *bulk_rx_ep;
217         struct usb_endpoint_descriptor *isoc_tx_ep;
218         struct usb_endpoint_descriptor *isoc_rx_ep;
219
220         __u8 cmdreq_type;
221
222         unsigned int sco_num;
223         int isoc_altsetting;
224         int suspend_count;
225 };
226
227 static int inc_tx(struct btusb_data *data)
228 {
229         unsigned long flags;
230         int rv;
231
232         spin_lock_irqsave(&data->txlock, flags);
233         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
234         if (!rv)
235                 data->tx_in_flight++;
236         spin_unlock_irqrestore(&data->txlock, flags);
237
238         return rv;
239 }
240
241 static void btusb_intr_complete(struct urb *urb)
242 {
243         struct hci_dev *hdev = urb->context;
244         struct btusb_data *data = hdev->driver_data;
245         int err;
246
247         BT_DBG("%s urb %p status %d count %d", hdev->name,
248                                         urb, urb->status, urb->actual_length);
249
250         if (!test_bit(HCI_RUNNING, &hdev->flags))
251                 return;
252
253         if (urb->status == 0) {
254                 hdev->stat.byte_rx += urb->actual_length;
255
256                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
257                                                 urb->transfer_buffer,
258                                                 urb->actual_length) < 0) {
259                         BT_ERR("%s corrupted event packet", hdev->name);
260                         hdev->stat.err_rx++;
261                 }
262         }
263
264         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
265                 return;
266
267         usb_mark_last_busy(data->udev);
268         usb_anchor_urb(urb, &data->intr_anchor);
269
270         err = usb_submit_urb(urb, GFP_ATOMIC);
271         if (err < 0) {
272                 /* -EPERM: urb is being killed;
273                  * -ENODEV: device got disconnected */
274                 if (err != -EPERM && err != -ENODEV)
275                         BT_ERR("%s urb %p failed to resubmit (%d)",
276                                                 hdev->name, urb, -err);
277                 usb_unanchor_urb(urb);
278         }
279 }
280
281 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
282 {
283         struct btusb_data *data = hdev->driver_data;
284         struct urb *urb;
285         unsigned char *buf;
286         unsigned int pipe;
287         int err, size;
288
289         BT_DBG("%s", hdev->name);
290
291         if (!data->intr_ep)
292                 return -ENODEV;
293
294         urb = usb_alloc_urb(0, mem_flags);
295         if (!urb)
296                 return -ENOMEM;
297
298         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
299
300         buf = kmalloc(size, mem_flags);
301         if (!buf) {
302                 usb_free_urb(urb);
303                 return -ENOMEM;
304         }
305
306         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
307
308         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
309                                                 btusb_intr_complete, hdev,
310                                                 data->intr_ep->bInterval);
311
312         urb->transfer_flags |= URB_FREE_BUFFER;
313
314         usb_anchor_urb(urb, &data->intr_anchor);
315
316         err = usb_submit_urb(urb, mem_flags);
317         if (err < 0) {
318                 BT_ERR("%s urb %p submission failed (%d)",
319                                                 hdev->name, urb, -err);
320                 usb_unanchor_urb(urb);
321         }
322
323         usb_free_urb(urb);
324
325         return err;
326 }
327
328 static void btusb_bulk_complete(struct urb *urb)
329 {
330         struct hci_dev *hdev = urb->context;
331         struct btusb_data *data = hdev->driver_data;
332         int err;
333
334         BT_DBG("%s urb %p status %d count %d", hdev->name,
335                                         urb, urb->status, urb->actual_length);
336
337         if (!test_bit(HCI_RUNNING, &hdev->flags))
338                 return;
339
340         if (urb->status == 0) {
341                 hdev->stat.byte_rx += urb->actual_length;
342
343                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
344                                                 urb->transfer_buffer,
345                                                 urb->actual_length) < 0) {
346                         BT_ERR("%s corrupted ACL packet", hdev->name);
347                         hdev->stat.err_rx++;
348                 }
349         }
350
351         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
352                 return;
353
354         usb_anchor_urb(urb, &data->bulk_anchor);
355         usb_mark_last_busy(data->udev);
356
357         err = usb_submit_urb(urb, GFP_ATOMIC);
358         if (err < 0) {
359                 /* -EPERM: urb is being killed;
360                  * -ENODEV: device got disconnected */
361                 if (err != -EPERM && err != -ENODEV)
362                         BT_ERR("%s urb %p failed to resubmit (%d)",
363                                                 hdev->name, urb, -err);
364                 usb_unanchor_urb(urb);
365         }
366 }
367
368 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
369 {
370         struct btusb_data *data = hdev->driver_data;
371         struct urb *urb;
372         unsigned char *buf;
373         unsigned int pipe;
374         int err, size = HCI_MAX_FRAME_SIZE;
375
376         BT_DBG("%s", hdev->name);
377
378         if (!data->bulk_rx_ep)
379                 return -ENODEV;
380
381         urb = usb_alloc_urb(0, mem_flags);
382         if (!urb)
383                 return -ENOMEM;
384
385         buf = kmalloc(size, mem_flags);
386         if (!buf) {
387                 usb_free_urb(urb);
388                 return -ENOMEM;
389         }
390
391         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
392
393         usb_fill_bulk_urb(urb, data->udev, pipe,
394                                         buf, size, btusb_bulk_complete, hdev);
395
396         urb->transfer_flags |= URB_FREE_BUFFER;
397
398         usb_mark_last_busy(data->udev);
399         usb_anchor_urb(urb, &data->bulk_anchor);
400
401         err = usb_submit_urb(urb, mem_flags);
402         if (err < 0) {
403                 BT_ERR("%s urb %p submission failed (%d)",
404                                                 hdev->name, urb, -err);
405                 usb_unanchor_urb(urb);
406         }
407
408         usb_free_urb(urb);
409
410         return err;
411 }
412
413 static void btusb_isoc_complete(struct urb *urb)
414 {
415         struct hci_dev *hdev = urb->context;
416         struct btusb_data *data = hdev->driver_data;
417         int i, err;
418
419         BT_DBG("%s urb %p status %d count %d", hdev->name,
420                                         urb, urb->status, urb->actual_length);
421
422         if (!test_bit(HCI_RUNNING, &hdev->flags))
423                 return;
424
425         if (urb->status == 0) {
426                 for (i = 0; i < urb->number_of_packets; i++) {
427                         unsigned int offset = urb->iso_frame_desc[i].offset;
428                         unsigned int length = urb->iso_frame_desc[i].actual_length;
429
430                         if (urb->iso_frame_desc[i].status)
431                                 continue;
432
433                         hdev->stat.byte_rx += length;
434
435                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
436                                                 urb->transfer_buffer + offset,
437                                                                 length) < 0) {
438                                 BT_ERR("%s corrupted SCO packet", hdev->name);
439                                 hdev->stat.err_rx++;
440                         }
441                 }
442         }
443
444         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
445                 return;
446
447         usb_anchor_urb(urb, &data->isoc_anchor);
448
449         err = usb_submit_urb(urb, GFP_ATOMIC);
450         if (err < 0) {
451                 /* -EPERM: urb is being killed;
452                  * -ENODEV: device got disconnected */
453                 if (err != -EPERM && err != -ENODEV)
454                         BT_ERR("%s urb %p failed to resubmit (%d)",
455                                                 hdev->name, urb, -err);
456                 usb_unanchor_urb(urb);
457         }
458 }
459
460 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
461 {
462         int i, offset = 0;
463
464         BT_DBG("len %d mtu %d", len, mtu);
465
466         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
467                                         i++, offset += mtu, len -= mtu) {
468                 urb->iso_frame_desc[i].offset = offset;
469                 urb->iso_frame_desc[i].length = mtu;
470         }
471
472         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
473                 urb->iso_frame_desc[i].offset = offset;
474                 urb->iso_frame_desc[i].length = len;
475                 i++;
476         }
477
478         urb->number_of_packets = i;
479 }
480
481 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
482 {
483         struct btusb_data *data = hdev->driver_data;
484         struct urb *urb;
485         unsigned char *buf;
486         unsigned int pipe;
487         int err, size;
488
489         BT_DBG("%s", hdev->name);
490
491         if (!data->isoc_rx_ep)
492                 return -ENODEV;
493
494         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
495         if (!urb)
496                 return -ENOMEM;
497
498         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
499                                                 BTUSB_MAX_ISOC_FRAMES;
500
501         buf = kmalloc(size, mem_flags);
502         if (!buf) {
503                 usb_free_urb(urb);
504                 return -ENOMEM;
505         }
506
507         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
508
509         urb->dev      = data->udev;
510         urb->pipe     = pipe;
511         urb->context  = hdev;
512         urb->complete = btusb_isoc_complete;
513         urb->interval = data->isoc_rx_ep->bInterval;
514
515         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
516         urb->transfer_buffer = buf;
517         urb->transfer_buffer_length = size;
518
519         __fill_isoc_descriptor(urb, size,
520                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
521
522         usb_anchor_urb(urb, &data->isoc_anchor);
523
524         err = usb_submit_urb(urb, mem_flags);
525         if (err < 0) {
526                 BT_ERR("%s urb %p submission failed (%d)",
527                                                 hdev->name, urb, -err);
528                 usb_unanchor_urb(urb);
529         }
530
531         usb_free_urb(urb);
532
533         return err;
534 }
535
536 static void btusb_tx_complete(struct urb *urb)
537 {
538         struct sk_buff *skb = urb->context;
539         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
540         struct btusb_data *data = hdev->driver_data;
541
542         BT_DBG("%s urb %p status %d count %d", hdev->name,
543                                         urb, urb->status, urb->actual_length);
544
545         if (!test_bit(HCI_RUNNING, &hdev->flags))
546                 goto done;
547
548         if (!urb->status)
549                 hdev->stat.byte_tx += urb->transfer_buffer_length;
550         else
551                 hdev->stat.err_tx++;
552
553 done:
554         spin_lock(&data->txlock);
555         data->tx_in_flight--;
556         spin_unlock(&data->txlock);
557
558         kfree(urb->setup_packet);
559
560         kfree_skb(skb);
561 }
562
563 static void btusb_isoc_tx_complete(struct urb *urb)
564 {
565         struct sk_buff *skb = urb->context;
566         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
567
568         BT_DBG("%s urb %p status %d count %d", hdev->name,
569                                         urb, urb->status, urb->actual_length);
570
571         if (!test_bit(HCI_RUNNING, &hdev->flags))
572                 goto done;
573
574         if (!urb->status)
575                 hdev->stat.byte_tx += urb->transfer_buffer_length;
576         else
577                 hdev->stat.err_tx++;
578
579 done:
580         kfree(urb->setup_packet);
581
582         kfree_skb(skb);
583 }
584
585 static int btusb_open(struct hci_dev *hdev)
586 {
587         struct btusb_data *data = hdev->driver_data;
588         int err;
589
590         BT_DBG("%s", hdev->name);
591
592         err = usb_autopm_get_interface(data->intf);
593         if (err < 0)
594                 return err;
595
596         data->intf->needs_remote_wakeup = 1;
597
598         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
599                 goto done;
600
601         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
602                 goto done;
603
604         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
605         if (err < 0)
606                 goto failed;
607
608         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
609         if (err < 0) {
610                 usb_kill_anchored_urbs(&data->intr_anchor);
611                 goto failed;
612         }
613
614         set_bit(BTUSB_BULK_RUNNING, &data->flags);
615         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
616
617 done:
618         usb_autopm_put_interface(data->intf);
619         return 0;
620
621 failed:
622         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
623         clear_bit(HCI_RUNNING, &hdev->flags);
624         usb_autopm_put_interface(data->intf);
625         return err;
626 }
627
628 static void btusb_stop_traffic(struct btusb_data *data)
629 {
630         usb_kill_anchored_urbs(&data->intr_anchor);
631         usb_kill_anchored_urbs(&data->bulk_anchor);
632         usb_kill_anchored_urbs(&data->isoc_anchor);
633 }
634
635 static int btusb_close(struct hci_dev *hdev)
636 {
637         struct btusb_data *data = hdev->driver_data;
638         int err;
639
640         BT_DBG("%s", hdev->name);
641
642         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
643                 return 0;
644
645         cancel_work_sync(&data->work);
646         cancel_work_sync(&data->waker);
647
648         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
649         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
650         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
651
652         btusb_stop_traffic(data);
653         err = usb_autopm_get_interface(data->intf);
654         if (err < 0)
655                 goto failed;
656
657         data->intf->needs_remote_wakeup = 0;
658         usb_autopm_put_interface(data->intf);
659
660 failed:
661         usb_scuttle_anchored_urbs(&data->deferred);
662         return 0;
663 }
664
665 static int btusb_flush(struct hci_dev *hdev)
666 {
667         struct btusb_data *data = hdev->driver_data;
668
669         BT_DBG("%s", hdev->name);
670
671         usb_kill_anchored_urbs(&data->tx_anchor);
672
673         return 0;
674 }
675
676 static int btusb_send_frame(struct sk_buff *skb)
677 {
678         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
679         struct btusb_data *data = hdev->driver_data;
680         struct usb_ctrlrequest *dr;
681         struct urb *urb;
682         unsigned int pipe;
683         int err;
684
685         BT_DBG("%s", hdev->name);
686
687         if (!test_bit(HCI_RUNNING, &hdev->flags))
688                 return -EBUSY;
689
690         switch (bt_cb(skb)->pkt_type) {
691         case HCI_COMMAND_PKT:
692                 urb = usb_alloc_urb(0, GFP_ATOMIC);
693                 if (!urb)
694                         return -ENOMEM;
695
696                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
697                 if (!dr) {
698                         usb_free_urb(urb);
699                         return -ENOMEM;
700                 }
701
702                 dr->bRequestType = data->cmdreq_type;
703                 dr->bRequest     = 0;
704                 dr->wIndex       = 0;
705                 dr->wValue       = 0;
706                 dr->wLength      = __cpu_to_le16(skb->len);
707
708                 pipe = usb_sndctrlpipe(data->udev, 0x00);
709
710                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
711                                 skb->data, skb->len, btusb_tx_complete, skb);
712
713                 hdev->stat.cmd_tx++;
714                 break;
715
716         case HCI_ACLDATA_PKT:
717                 if (!data->bulk_tx_ep)
718                         return -ENODEV;
719
720                 urb = usb_alloc_urb(0, GFP_ATOMIC);
721                 if (!urb)
722                         return -ENOMEM;
723
724                 pipe = usb_sndbulkpipe(data->udev,
725                                         data->bulk_tx_ep->bEndpointAddress);
726
727                 usb_fill_bulk_urb(urb, data->udev, pipe,
728                                 skb->data, skb->len, btusb_tx_complete, skb);
729
730                 hdev->stat.acl_tx++;
731                 break;
732
733         case HCI_SCODATA_PKT:
734                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
735                         return -ENODEV;
736
737                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
738                 if (!urb)
739                         return -ENOMEM;
740
741                 pipe = usb_sndisocpipe(data->udev,
742                                         data->isoc_tx_ep->bEndpointAddress);
743
744                 usb_fill_int_urb(urb, data->udev, pipe,
745                                 skb->data, skb->len, btusb_isoc_tx_complete,
746                                 skb, data->isoc_tx_ep->bInterval);
747
748                 urb->transfer_flags  = URB_ISO_ASAP;
749
750                 __fill_isoc_descriptor(urb, skb->len,
751                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
752
753                 hdev->stat.sco_tx++;
754                 goto skip_waking;
755
756         default:
757                 return -EILSEQ;
758         }
759
760         err = inc_tx(data);
761         if (err) {
762                 usb_anchor_urb(urb, &data->deferred);
763                 schedule_work(&data->waker);
764                 err = 0;
765                 goto done;
766         }
767
768 skip_waking:
769         usb_anchor_urb(urb, &data->tx_anchor);
770
771         err = usb_submit_urb(urb, GFP_ATOMIC);
772         if (err < 0) {
773                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
774                 kfree(urb->setup_packet);
775                 usb_unanchor_urb(urb);
776         } else {
777                 usb_mark_last_busy(data->udev);
778         }
779
780         usb_free_urb(urb);
781
782 done:
783         return err;
784 }
785
786 static void btusb_destruct(struct hci_dev *hdev)
787 {
788         struct btusb_data *data = hdev->driver_data;
789
790         BT_DBG("%s", hdev->name);
791
792         kfree(data);
793 }
794
795 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
796 {
797         struct btusb_data *data = hdev->driver_data;
798
799         BT_DBG("%s evt %d", hdev->name, evt);
800
801         if (hdev->conn_hash.sco_num != data->sco_num) {
802                 data->sco_num = hdev->conn_hash.sco_num;
803                 schedule_work(&data->work);
804         }
805 }
806
807 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
808 {
809         struct btusb_data *data = hdev->driver_data;
810         struct usb_interface *intf = data->isoc;
811         struct usb_endpoint_descriptor *ep_desc;
812         int i, err;
813
814         if (!data->isoc)
815                 return -ENODEV;
816
817         err = usb_set_interface(data->udev, 1, altsetting);
818         if (err < 0) {
819                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
820                 return err;
821         }
822
823         data->isoc_altsetting = altsetting;
824
825         data->isoc_tx_ep = NULL;
826         data->isoc_rx_ep = NULL;
827
828         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
829                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
830
831                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
832                         data->isoc_tx_ep = ep_desc;
833                         continue;
834                 }
835
836                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
837                         data->isoc_rx_ep = ep_desc;
838                         continue;
839                 }
840         }
841
842         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
843                 BT_ERR("%s invalid SCO descriptors", hdev->name);
844                 return -ENODEV;
845         }
846
847         return 0;
848 }
849
850 static void btusb_work(struct work_struct *work)
851 {
852         struct btusb_data *data = container_of(work, struct btusb_data, work);
853         struct hci_dev *hdev = data->hdev;
854         int err;
855
856         if (hdev->conn_hash.sco_num > 0) {
857                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
858                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
859                         if (err < 0) {
860                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
861                                 usb_kill_anchored_urbs(&data->isoc_anchor);
862                                 return;
863                         }
864
865                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
866                 }
867                 if (data->isoc_altsetting != 2) {
868                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
869                         usb_kill_anchored_urbs(&data->isoc_anchor);
870
871                         if (__set_isoc_interface(hdev, 2) < 0)
872                                 return;
873                 }
874
875                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
876                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
877                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
878                         else
879                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
880                 }
881         } else {
882                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
883                 usb_kill_anchored_urbs(&data->isoc_anchor);
884
885                 __set_isoc_interface(hdev, 0);
886                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
887                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
888         }
889 }
890
891 static void btusb_waker(struct work_struct *work)
892 {
893         struct btusb_data *data = container_of(work, struct btusb_data, waker);
894         int err;
895
896         err = usb_autopm_get_interface(data->intf);
897         if (err < 0)
898                 return;
899
900         usb_autopm_put_interface(data->intf);
901 }
902
903 static int btusb_probe(struct usb_interface *intf,
904                                 const struct usb_device_id *id)
905 {
906         struct usb_endpoint_descriptor *ep_desc;
907         struct btusb_data *data;
908         struct hci_dev *hdev;
909         int i, err;
910
911         BT_DBG("intf %p id %p", intf, id);
912
913         /* interface numbers are hardcoded in the spec */
914         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
915                 return -ENODEV;
916
917         if (!id->driver_info) {
918                 const struct usb_device_id *match;
919                 match = usb_match_id(intf, blacklist_table);
920                 if (match)
921                         id = match;
922         }
923
924         if (id->driver_info == BTUSB_IGNORE)
925                 return -ENODEV;
926
927         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
928                 return -ENODEV;
929
930         if (ignore_csr && id->driver_info & BTUSB_CSR)
931                 return -ENODEV;
932
933         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
934                 return -ENODEV;
935
936         if (id->driver_info & BTUSB_ATH3012) {
937                 struct usb_device *udev = interface_to_usbdev(intf);
938
939                 /* Old firmware would otherwise let ath3k driver load
940                  * patch and sysconfig files */
941                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
942                         return -ENODEV;
943         }
944
945         data = kzalloc(sizeof(*data), GFP_KERNEL);
946         if (!data)
947                 return -ENOMEM;
948
949         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
950                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
951
952                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
953                         data->intr_ep = ep_desc;
954                         continue;
955                 }
956
957                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
958                         data->bulk_tx_ep = ep_desc;
959                         continue;
960                 }
961
962                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
963                         data->bulk_rx_ep = ep_desc;
964                         continue;
965                 }
966         }
967
968         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
969                 kfree(data);
970                 return -ENODEV;
971         }
972
973         data->cmdreq_type = USB_TYPE_CLASS;
974
975         data->udev = interface_to_usbdev(intf);
976         data->intf = intf;
977
978         spin_lock_init(&data->lock);
979
980         INIT_WORK(&data->work, btusb_work);
981         INIT_WORK(&data->waker, btusb_waker);
982         spin_lock_init(&data->txlock);
983
984         init_usb_anchor(&data->tx_anchor);
985         init_usb_anchor(&data->intr_anchor);
986         init_usb_anchor(&data->bulk_anchor);
987         init_usb_anchor(&data->isoc_anchor);
988         init_usb_anchor(&data->deferred);
989
990         hdev = hci_alloc_dev();
991         if (!hdev) {
992                 kfree(data);
993                 return -ENOMEM;
994         }
995
996         hdev->bus = HCI_USB;
997         hdev->driver_data = data;
998
999         data->hdev = hdev;
1000
1001         SET_HCIDEV_DEV(hdev, &intf->dev);
1002
1003         hdev->open     = btusb_open;
1004         hdev->close    = btusb_close;
1005         hdev->flush    = btusb_flush;
1006         hdev->send     = btusb_send_frame;
1007         hdev->destruct = btusb_destruct;
1008         hdev->notify   = btusb_notify;
1009
1010         hdev->owner = THIS_MODULE;
1011
1012         /* Interface numbers are hardcoded in the specification */
1013         data->isoc = usb_ifnum_to_if(data->udev, 1);
1014
1015         if (!reset)
1016                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1017
1018         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1019                 if (!disable_scofix)
1020                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1021         }
1022
1023         if (id->driver_info & BTUSB_BROKEN_ISOC)
1024                 data->isoc = NULL;
1025
1026         if (id->driver_info & BTUSB_DIGIANSWER) {
1027                 data->cmdreq_type = USB_TYPE_VENDOR;
1028                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1029         }
1030
1031         if (id->driver_info & BTUSB_CSR) {
1032                 struct usb_device *udev = data->udev;
1033
1034                 /* Old firmware would otherwise execute USB reset */
1035                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1036                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1037         }
1038
1039         if (id->driver_info & BTUSB_SNIFFER) {
1040                 struct usb_device *udev = data->udev;
1041
1042                 /* New sniffer firmware has crippled HCI interface */
1043                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1044                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1045
1046                 data->isoc = NULL;
1047         }
1048
1049         if (id->driver_info & BTUSB_BCM92035) {
1050                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1051                 struct sk_buff *skb;
1052
1053                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1054                 if (skb) {
1055                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1056                         skb_queue_tail(&hdev->driver_init, skb);
1057                 }
1058         }
1059
1060         if (data->isoc) {
1061                 err = usb_driver_claim_interface(&btusb_driver,
1062                                                         data->isoc, data);
1063                 if (err < 0) {
1064                         hci_free_dev(hdev);
1065                         kfree(data);
1066                         return err;
1067                 }
1068         }
1069
1070         err = hci_register_dev(hdev);
1071         if (err < 0) {
1072                 hci_free_dev(hdev);
1073                 kfree(data);
1074                 return err;
1075         }
1076
1077         usb_set_intfdata(intf, data);
1078
1079         return 0;
1080 }
1081
1082 static void btusb_disconnect(struct usb_interface *intf)
1083 {
1084         struct btusb_data *data = usb_get_intfdata(intf);
1085         struct hci_dev *hdev;
1086
1087         BT_DBG("intf %p", intf);
1088
1089         if (!data)
1090                 return;
1091
1092         hdev = data->hdev;
1093
1094         __hci_dev_hold(hdev);
1095
1096         usb_set_intfdata(data->intf, NULL);
1097
1098         if (data->isoc)
1099                 usb_set_intfdata(data->isoc, NULL);
1100
1101         hci_unregister_dev(hdev);
1102
1103         if (intf == data->isoc)
1104                 usb_driver_release_interface(&btusb_driver, data->intf);
1105         else if (data->isoc)
1106                 usb_driver_release_interface(&btusb_driver, data->isoc);
1107
1108         __hci_dev_put(hdev);
1109
1110         hci_free_dev(hdev);
1111 }
1112
1113 #ifdef CONFIG_PM
1114 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1115 {
1116         struct btusb_data *data = usb_get_intfdata(intf);
1117
1118         BT_DBG("intf %p", intf);
1119
1120         if (data->suspend_count++)
1121                 return 0;
1122
1123         spin_lock_irq(&data->txlock);
1124         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1125                 set_bit(BTUSB_SUSPENDING, &data->flags);
1126                 spin_unlock_irq(&data->txlock);
1127         } else {
1128                 spin_unlock_irq(&data->txlock);
1129                 data->suspend_count--;
1130                 return -EBUSY;
1131         }
1132
1133         cancel_work_sync(&data->work);
1134
1135         btusb_stop_traffic(data);
1136         usb_kill_anchored_urbs(&data->tx_anchor);
1137
1138         return 0;
1139 }
1140
1141 static void play_deferred(struct btusb_data *data)
1142 {
1143         struct urb *urb;
1144         int err;
1145
1146         while ((urb = usb_get_from_anchor(&data->deferred))) {
1147                 err = usb_submit_urb(urb, GFP_ATOMIC);
1148                 if (err < 0)
1149                         break;
1150
1151                 data->tx_in_flight++;
1152         }
1153         usb_scuttle_anchored_urbs(&data->deferred);
1154 }
1155
1156 static int btusb_resume(struct usb_interface *intf)
1157 {
1158         struct btusb_data *data = usb_get_intfdata(intf);
1159         struct hci_dev *hdev = data->hdev;
1160         int err = 0;
1161
1162         BT_DBG("intf %p", intf);
1163
1164         if (--data->suspend_count)
1165                 return 0;
1166
1167         if (!test_bit(HCI_RUNNING, &hdev->flags))
1168                 goto done;
1169
1170         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1171                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1172                 if (err < 0) {
1173                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1174                         goto failed;
1175                 }
1176         }
1177
1178         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1179                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1180                 if (err < 0) {
1181                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1182                         goto failed;
1183                 }
1184
1185                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1186         }
1187
1188         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1189                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1190                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1191                 else
1192                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1193         }
1194
1195         spin_lock_irq(&data->txlock);
1196         play_deferred(data);
1197         clear_bit(BTUSB_SUSPENDING, &data->flags);
1198         spin_unlock_irq(&data->txlock);
1199         schedule_work(&data->work);
1200
1201         return 0;
1202
1203 failed:
1204         usb_scuttle_anchored_urbs(&data->deferred);
1205 done:
1206         spin_lock_irq(&data->txlock);
1207         clear_bit(BTUSB_SUSPENDING, &data->flags);
1208         spin_unlock_irq(&data->txlock);
1209
1210         return err;
1211 }
1212 #endif
1213
1214 static struct usb_driver btusb_driver = {
1215         .name           = "btusb",
1216         .probe          = btusb_probe,
1217         .disconnect     = btusb_disconnect,
1218 #ifdef CONFIG_PM
1219         .suspend        = btusb_suspend,
1220         .resume         = btusb_resume,
1221 #endif
1222         .id_table       = btusb_table,
1223         .supports_autosuspend = 1,
1224 };
1225
1226 module_usb_driver(btusb_driver);
1227
1228 module_param(ignore_dga, bool, 0644);
1229 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1230
1231 module_param(ignore_csr, bool, 0644);
1232 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1233
1234 module_param(ignore_sniffer, bool, 0644);
1235 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1236
1237 module_param(disable_scofix, bool, 0644);
1238 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1239
1240 module_param(force_scofix, bool, 0644);
1241 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1242
1243 module_param(reset, bool, 0644);
1244 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1245
1246 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1247 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1248 MODULE_VERSION(VERSION);
1249 MODULE_LICENSE("GPL");