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