Bluetooth: Added support for controller shipped with iMac i5
[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 iMac11,1 */
63         { USB_DEVICE(0x05ac, 0x8215) },
64
65         /* AVM BlueFRITZ! USB v2.0 */
66         { USB_DEVICE(0x057c, 0x3800) },
67
68         /* Bluetooth Ultraport Module from IBM */
69         { USB_DEVICE(0x04bf, 0x030a) },
70
71         /* ALPS Modules with non-standard id */
72         { USB_DEVICE(0x044e, 0x3001) },
73         { USB_DEVICE(0x044e, 0x3002) },
74
75         /* Ericsson with non-standard id */
76         { USB_DEVICE(0x0bdb, 0x1002) },
77
78         /* Canyon CN-BTU1 with HID interfaces */
79         { USB_DEVICE(0x0c10, 0x0000) },
80
81         { }     /* Terminating entry */
82 };
83
84 MODULE_DEVICE_TABLE(usb, btusb_table);
85
86 static struct usb_device_id blacklist_table[] = {
87         /* CSR BlueCore devices */
88         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
89
90         /* Broadcom BCM2033 without firmware */
91         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
92
93         /* Broadcom BCM2035 */
94         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
95         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
96         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
97
98         /* Broadcom BCM2045 */
99         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
100         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
101
102         /* IBM/Lenovo ThinkPad with Broadcom chip */
103         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
104         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
105
106         /* HP laptop with Broadcom chip */
107         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
108
109         /* Dell laptop with Broadcom chip */
110         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
111
112         /* Dell Wireless 370 and 410 devices */
113         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
114         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
115
116         /* Belkin F8T012 and F8T013 devices */
117         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
118         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
119
120         /* Asus WL-BTD202 device */
121         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
122
123         /* Kensington Bluetooth USB adapter */
124         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
125
126         /* RTX Telecom based adapters with buggy SCO support */
127         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
128         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
129
130         /* CONWISE Technology based adapters with buggy SCO support */
131         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
132
133         /* Digianswer devices */
134         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
135         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
136
137         /* CSR BlueCore Bluetooth Sniffer */
138         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
139
140         /* Frontline ComProbe Bluetooth Sniffer */
141         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
142
143         { }     /* Terminating entry */
144 };
145
146 #define BTUSB_MAX_ISOC_FRAMES   10
147
148 #define BTUSB_INTR_RUNNING      0
149 #define BTUSB_BULK_RUNNING      1
150 #define BTUSB_ISOC_RUNNING      2
151 #define BTUSB_SUSPENDING        3
152
153 struct btusb_data {
154         struct hci_dev       *hdev;
155         struct usb_device    *udev;
156         struct usb_interface *intf;
157         struct usb_interface *isoc;
158
159         spinlock_t lock;
160
161         unsigned long flags;
162
163         struct work_struct work;
164         struct work_struct waker;
165
166         struct usb_anchor tx_anchor;
167         struct usb_anchor intr_anchor;
168         struct usb_anchor bulk_anchor;
169         struct usb_anchor isoc_anchor;
170         struct usb_anchor deferred;
171         int tx_in_flight;
172         spinlock_t txlock;
173
174         struct usb_endpoint_descriptor *intr_ep;
175         struct usb_endpoint_descriptor *bulk_tx_ep;
176         struct usb_endpoint_descriptor *bulk_rx_ep;
177         struct usb_endpoint_descriptor *isoc_tx_ep;
178         struct usb_endpoint_descriptor *isoc_rx_ep;
179
180         __u8 cmdreq_type;
181
182         unsigned int sco_num;
183         int isoc_altsetting;
184         int suspend_count;
185         int did_iso_resume:1;
186 };
187
188 static int inc_tx(struct btusb_data *data)
189 {
190         unsigned long flags;
191         int rv;
192
193         spin_lock_irqsave(&data->txlock, flags);
194         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
195         if (!rv)
196                 data->tx_in_flight++;
197         spin_unlock_irqrestore(&data->txlock, flags);
198
199         return rv;
200 }
201
202 static void btusb_intr_complete(struct urb *urb)
203 {
204         struct hci_dev *hdev = urb->context;
205         struct btusb_data *data = hdev->driver_data;
206         int err;
207
208         BT_DBG("%s urb %p status %d count %d", hdev->name,
209                                         urb, urb->status, urb->actual_length);
210
211         if (!test_bit(HCI_RUNNING, &hdev->flags))
212                 return;
213
214         if (urb->status == 0) {
215                 hdev->stat.byte_rx += urb->actual_length;
216
217                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
218                                                 urb->transfer_buffer,
219                                                 urb->actual_length) < 0) {
220                         BT_ERR("%s corrupted event packet", hdev->name);
221                         hdev->stat.err_rx++;
222                 }
223         }
224
225         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
226                 return;
227
228         usb_mark_last_busy(data->udev);
229         usb_anchor_urb(urb, &data->intr_anchor);
230
231         err = usb_submit_urb(urb, GFP_ATOMIC);
232         if (err < 0) {
233                 BT_ERR("%s urb %p failed to resubmit (%d)",
234                                                 hdev->name, urb, -err);
235                 usb_unanchor_urb(urb);
236         }
237 }
238
239 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
240 {
241         struct btusb_data *data = hdev->driver_data;
242         struct urb *urb;
243         unsigned char *buf;
244         unsigned int pipe;
245         int err, size;
246
247         BT_DBG("%s", hdev->name);
248
249         if (!data->intr_ep)
250                 return -ENODEV;
251
252         urb = usb_alloc_urb(0, mem_flags);
253         if (!urb)
254                 return -ENOMEM;
255
256         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
257
258         buf = kmalloc(size, mem_flags);
259         if (!buf) {
260                 usb_free_urb(urb);
261                 return -ENOMEM;
262         }
263
264         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
265
266         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
267                                                 btusb_intr_complete, hdev,
268                                                 data->intr_ep->bInterval);
269
270         urb->transfer_flags |= URB_FREE_BUFFER;
271
272         usb_anchor_urb(urb, &data->intr_anchor);
273
274         err = usb_submit_urb(urb, mem_flags);
275         if (err < 0) {
276                 BT_ERR("%s urb %p submission failed (%d)",
277                                                 hdev->name, urb, -err);
278                 usb_unanchor_urb(urb);
279         }
280
281         usb_free_urb(urb);
282
283         return err;
284 }
285
286 static void btusb_bulk_complete(struct urb *urb)
287 {
288         struct hci_dev *hdev = urb->context;
289         struct btusb_data *data = hdev->driver_data;
290         int err;
291
292         BT_DBG("%s urb %p status %d count %d", hdev->name,
293                                         urb, urb->status, urb->actual_length);
294
295         if (!test_bit(HCI_RUNNING, &hdev->flags))
296                 return;
297
298         if (urb->status == 0) {
299                 hdev->stat.byte_rx += urb->actual_length;
300
301                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
302                                                 urb->transfer_buffer,
303                                                 urb->actual_length) < 0) {
304                         BT_ERR("%s corrupted ACL packet", hdev->name);
305                         hdev->stat.err_rx++;
306                 }
307         }
308
309         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
310                 return;
311
312         usb_anchor_urb(urb, &data->bulk_anchor);
313         usb_mark_last_busy(data->udev);
314
315         err = usb_submit_urb(urb, GFP_ATOMIC);
316         if (err < 0) {
317                 BT_ERR("%s urb %p failed to resubmit (%d)",
318                                                 hdev->name, urb, -err);
319                 usb_unanchor_urb(urb);
320         }
321 }
322
323 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
324 {
325         struct btusb_data *data = hdev->driver_data;
326         struct urb *urb;
327         unsigned char *buf;
328         unsigned int pipe;
329         int err, size = HCI_MAX_FRAME_SIZE;
330
331         BT_DBG("%s", hdev->name);
332
333         if (!data->bulk_rx_ep)
334                 return -ENODEV;
335
336         urb = usb_alloc_urb(0, mem_flags);
337         if (!urb)
338                 return -ENOMEM;
339
340         buf = kmalloc(size, mem_flags);
341         if (!buf) {
342                 usb_free_urb(urb);
343                 return -ENOMEM;
344         }
345
346         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
347
348         usb_fill_bulk_urb(urb, data->udev, pipe,
349                                         buf, size, btusb_bulk_complete, hdev);
350
351         urb->transfer_flags |= URB_FREE_BUFFER;
352
353         usb_mark_last_busy(data->udev);
354         usb_anchor_urb(urb, &data->bulk_anchor);
355
356         err = usb_submit_urb(urb, mem_flags);
357         if (err < 0) {
358                 BT_ERR("%s urb %p submission failed (%d)",
359                                                 hdev->name, urb, -err);
360                 usb_unanchor_urb(urb);
361         }
362
363         usb_free_urb(urb);
364
365         return err;
366 }
367
368 static void btusb_isoc_complete(struct urb *urb)
369 {
370         struct hci_dev *hdev = urb->context;
371         struct btusb_data *data = hdev->driver_data;
372         int i, err;
373
374         BT_DBG("%s urb %p status %d count %d", hdev->name,
375                                         urb, urb->status, urb->actual_length);
376
377         if (!test_bit(HCI_RUNNING, &hdev->flags))
378                 return;
379
380         if (urb->status == 0) {
381                 for (i = 0; i < urb->number_of_packets; i++) {
382                         unsigned int offset = urb->iso_frame_desc[i].offset;
383                         unsigned int length = urb->iso_frame_desc[i].actual_length;
384
385                         if (urb->iso_frame_desc[i].status)
386                                 continue;
387
388                         hdev->stat.byte_rx += length;
389
390                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
391                                                 urb->transfer_buffer + offset,
392                                                                 length) < 0) {
393                                 BT_ERR("%s corrupted SCO packet", hdev->name);
394                                 hdev->stat.err_rx++;
395                         }
396                 }
397         }
398
399         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
400                 return;
401
402         usb_anchor_urb(urb, &data->isoc_anchor);
403
404         err = usb_submit_urb(urb, GFP_ATOMIC);
405         if (err < 0) {
406                 BT_ERR("%s urb %p failed to resubmit (%d)",
407                                                 hdev->name, urb, -err);
408                 usb_unanchor_urb(urb);
409         }
410 }
411
412 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
413 {
414         int i, offset = 0;
415
416         BT_DBG("len %d mtu %d", len, mtu);
417
418         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
419                                         i++, offset += mtu, len -= mtu) {
420                 urb->iso_frame_desc[i].offset = offset;
421                 urb->iso_frame_desc[i].length = mtu;
422         }
423
424         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
425                 urb->iso_frame_desc[i].offset = offset;
426                 urb->iso_frame_desc[i].length = len;
427                 i++;
428         }
429
430         urb->number_of_packets = i;
431 }
432
433 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
434 {
435         struct btusb_data *data = hdev->driver_data;
436         struct urb *urb;
437         unsigned char *buf;
438         unsigned int pipe;
439         int err, size;
440
441         BT_DBG("%s", hdev->name);
442
443         if (!data->isoc_rx_ep)
444                 return -ENODEV;
445
446         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
447         if (!urb)
448                 return -ENOMEM;
449
450         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
451                                                 BTUSB_MAX_ISOC_FRAMES;
452
453         buf = kmalloc(size, mem_flags);
454         if (!buf) {
455                 usb_free_urb(urb);
456                 return -ENOMEM;
457         }
458
459         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
460
461         urb->dev      = data->udev;
462         urb->pipe     = pipe;
463         urb->context  = hdev;
464         urb->complete = btusb_isoc_complete;
465         urb->interval = data->isoc_rx_ep->bInterval;
466
467         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
468         urb->transfer_buffer = buf;
469         urb->transfer_buffer_length = size;
470
471         __fill_isoc_descriptor(urb, size,
472                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
473
474         usb_anchor_urb(urb, &data->isoc_anchor);
475
476         err = usb_submit_urb(urb, mem_flags);
477         if (err < 0) {
478                 BT_ERR("%s urb %p submission failed (%d)",
479                                                 hdev->name, urb, -err);
480                 usb_unanchor_urb(urb);
481         }
482
483         usb_free_urb(urb);
484
485         return err;
486 }
487
488 static void btusb_tx_complete(struct urb *urb)
489 {
490         struct sk_buff *skb = urb->context;
491         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
492         struct btusb_data *data = hdev->driver_data;
493
494         BT_DBG("%s urb %p status %d count %d", hdev->name,
495                                         urb, urb->status, urb->actual_length);
496
497         if (!test_bit(HCI_RUNNING, &hdev->flags))
498                 goto done;
499
500         if (!urb->status)
501                 hdev->stat.byte_tx += urb->transfer_buffer_length;
502         else
503                 hdev->stat.err_tx++;
504
505 done:
506         spin_lock(&data->txlock);
507         data->tx_in_flight--;
508         spin_unlock(&data->txlock);
509
510         kfree(urb->setup_packet);
511
512         kfree_skb(skb);
513 }
514
515 static void btusb_isoc_tx_complete(struct urb *urb)
516 {
517         struct sk_buff *skb = urb->context;
518         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
519
520         BT_DBG("%s urb %p status %d count %d", hdev->name,
521                                         urb, urb->status, urb->actual_length);
522
523         if (!test_bit(HCI_RUNNING, &hdev->flags))
524                 goto done;
525
526         if (!urb->status)
527                 hdev->stat.byte_tx += urb->transfer_buffer_length;
528         else
529                 hdev->stat.err_tx++;
530
531 done:
532         kfree(urb->setup_packet);
533
534         kfree_skb(skb);
535 }
536
537 static int btusb_open(struct hci_dev *hdev)
538 {
539         struct btusb_data *data = hdev->driver_data;
540         int err;
541
542         BT_DBG("%s", hdev->name);
543
544         err = usb_autopm_get_interface(data->intf);
545         if (err < 0)
546                 return err;
547
548         data->intf->needs_remote_wakeup = 1;
549
550         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
551                 goto done;
552
553         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
554                 goto done;
555
556         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
557         if (err < 0)
558                 goto failed;
559
560         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
561         if (err < 0) {
562                 usb_kill_anchored_urbs(&data->intr_anchor);
563                 goto failed;
564         }
565
566         set_bit(BTUSB_BULK_RUNNING, &data->flags);
567         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
568
569 done:
570         usb_autopm_put_interface(data->intf);
571         return 0;
572
573 failed:
574         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
575         clear_bit(HCI_RUNNING, &hdev->flags);
576         usb_autopm_put_interface(data->intf);
577         return err;
578 }
579
580 static void btusb_stop_traffic(struct btusb_data *data)
581 {
582         usb_kill_anchored_urbs(&data->intr_anchor);
583         usb_kill_anchored_urbs(&data->bulk_anchor);
584         usb_kill_anchored_urbs(&data->isoc_anchor);
585 }
586
587 static int btusb_close(struct hci_dev *hdev)
588 {
589         struct btusb_data *data = hdev->driver_data;
590         int err;
591
592         BT_DBG("%s", hdev->name);
593
594         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
595                 return 0;
596
597         cancel_work_sync(&data->work);
598         cancel_work_sync(&data->waker);
599
600         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
601         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
602         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
603
604         btusb_stop_traffic(data);
605         err = usb_autopm_get_interface(data->intf);
606         if (err < 0)
607                 goto failed;
608
609         data->intf->needs_remote_wakeup = 0;
610         usb_autopm_put_interface(data->intf);
611
612 failed:
613         usb_scuttle_anchored_urbs(&data->deferred);
614         return 0;
615 }
616
617 static int btusb_flush(struct hci_dev *hdev)
618 {
619         struct btusb_data *data = hdev->driver_data;
620
621         BT_DBG("%s", hdev->name);
622
623         usb_kill_anchored_urbs(&data->tx_anchor);
624
625         return 0;
626 }
627
628 static int btusb_send_frame(struct sk_buff *skb)
629 {
630         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
631         struct btusb_data *data = hdev->driver_data;
632         struct usb_ctrlrequest *dr;
633         struct urb *urb;
634         unsigned int pipe;
635         int err;
636
637         BT_DBG("%s", hdev->name);
638
639         if (!test_bit(HCI_RUNNING, &hdev->flags))
640                 return -EBUSY;
641
642         switch (bt_cb(skb)->pkt_type) {
643         case HCI_COMMAND_PKT:
644                 urb = usb_alloc_urb(0, GFP_ATOMIC);
645                 if (!urb)
646                         return -ENOMEM;
647
648                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
649                 if (!dr) {
650                         usb_free_urb(urb);
651                         return -ENOMEM;
652                 }
653
654                 dr->bRequestType = data->cmdreq_type;
655                 dr->bRequest     = 0;
656                 dr->wIndex       = 0;
657                 dr->wValue       = 0;
658                 dr->wLength      = __cpu_to_le16(skb->len);
659
660                 pipe = usb_sndctrlpipe(data->udev, 0x00);
661
662                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
663                                 skb->data, skb->len, btusb_tx_complete, skb);
664
665                 hdev->stat.cmd_tx++;
666                 break;
667
668         case HCI_ACLDATA_PKT:
669                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
670                         return -ENODEV;
671
672                 urb = usb_alloc_urb(0, GFP_ATOMIC);
673                 if (!urb)
674                         return -ENOMEM;
675
676                 pipe = usb_sndbulkpipe(data->udev,
677                                         data->bulk_tx_ep->bEndpointAddress);
678
679                 usb_fill_bulk_urb(urb, data->udev, pipe,
680                                 skb->data, skb->len, btusb_tx_complete, skb);
681
682                 hdev->stat.acl_tx++;
683                 break;
684
685         case HCI_SCODATA_PKT:
686                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
687                         return -ENODEV;
688
689                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
690                 if (!urb)
691                         return -ENOMEM;
692
693                 pipe = usb_sndisocpipe(data->udev,
694                                         data->isoc_tx_ep->bEndpointAddress);
695
696                 urb->dev      = data->udev;
697                 urb->pipe     = pipe;
698                 urb->context  = skb;
699                 urb->complete = btusb_isoc_tx_complete;
700                 urb->interval = data->isoc_tx_ep->bInterval;
701
702                 urb->transfer_flags  = URB_ISO_ASAP;
703                 urb->transfer_buffer = skb->data;
704                 urb->transfer_buffer_length = skb->len;
705
706                 __fill_isoc_descriptor(urb, skb->len,
707                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
708
709                 hdev->stat.sco_tx++;
710                 goto skip_waking;
711
712         default:
713                 return -EILSEQ;
714         }
715
716         err = inc_tx(data);
717         if (err) {
718                 usb_anchor_urb(urb, &data->deferred);
719                 schedule_work(&data->waker);
720                 err = 0;
721                 goto done;
722         }
723
724 skip_waking:
725         usb_anchor_urb(urb, &data->tx_anchor);
726
727         err = usb_submit_urb(urb, GFP_ATOMIC);
728         if (err < 0) {
729                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
730                 kfree(urb->setup_packet);
731                 usb_unanchor_urb(urb);
732         } else {
733                 usb_mark_last_busy(data->udev);
734         }
735
736         usb_free_urb(urb);
737
738 done:
739         return err;
740 }
741
742 static void btusb_destruct(struct hci_dev *hdev)
743 {
744         struct btusb_data *data = hdev->driver_data;
745
746         BT_DBG("%s", hdev->name);
747
748         kfree(data);
749 }
750
751 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
752 {
753         struct btusb_data *data = hdev->driver_data;
754
755         BT_DBG("%s evt %d", hdev->name, evt);
756
757         if (hdev->conn_hash.sco_num != data->sco_num) {
758                 data->sco_num = hdev->conn_hash.sco_num;
759                 schedule_work(&data->work);
760         }
761 }
762
763 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
764 {
765         struct btusb_data *data = hdev->driver_data;
766         struct usb_interface *intf = data->isoc;
767         struct usb_endpoint_descriptor *ep_desc;
768         int i, err;
769
770         if (!data->isoc)
771                 return -ENODEV;
772
773         err = usb_set_interface(data->udev, 1, altsetting);
774         if (err < 0) {
775                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
776                 return err;
777         }
778
779         data->isoc_altsetting = altsetting;
780
781         data->isoc_tx_ep = NULL;
782         data->isoc_rx_ep = NULL;
783
784         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
785                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
786
787                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
788                         data->isoc_tx_ep = ep_desc;
789                         continue;
790                 }
791
792                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
793                         data->isoc_rx_ep = ep_desc;
794                         continue;
795                 }
796         }
797
798         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
799                 BT_ERR("%s invalid SCO descriptors", hdev->name);
800                 return -ENODEV;
801         }
802
803         return 0;
804 }
805
806 static void btusb_work(struct work_struct *work)
807 {
808         struct btusb_data *data = container_of(work, struct btusb_data, work);
809         struct hci_dev *hdev = data->hdev;
810         int err;
811
812         if (hdev->conn_hash.sco_num > 0) {
813                 if (!data->did_iso_resume) {
814                         err = usb_autopm_get_interface(data->isoc);
815                         if (err < 0) {
816                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
817                                 usb_kill_anchored_urbs(&data->isoc_anchor);
818                                 return;
819                         }
820
821                         data->did_iso_resume = 1;
822                 }
823                 if (data->isoc_altsetting != 2) {
824                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
825                         usb_kill_anchored_urbs(&data->isoc_anchor);
826
827                         if (__set_isoc_interface(hdev, 2) < 0)
828                                 return;
829                 }
830
831                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
832                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
833                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
834                         else
835                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
836                 }
837         } else {
838                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
839                 usb_kill_anchored_urbs(&data->isoc_anchor);
840
841                 __set_isoc_interface(hdev, 0);
842                 if (data->did_iso_resume) {
843                         data->did_iso_resume = 0;
844                         usb_autopm_put_interface(data->isoc);
845                 }
846         }
847 }
848
849 static void btusb_waker(struct work_struct *work)
850 {
851         struct btusb_data *data = container_of(work, struct btusb_data, waker);
852         int err;
853
854         err = usb_autopm_get_interface(data->intf);
855         if (err < 0)
856                 return;
857
858         usb_autopm_put_interface(data->intf);
859 }
860
861 static int btusb_probe(struct usb_interface *intf,
862                                 const struct usb_device_id *id)
863 {
864         struct usb_endpoint_descriptor *ep_desc;
865         struct btusb_data *data;
866         struct hci_dev *hdev;
867         int i, err;
868
869         BT_DBG("intf %p id %p", intf, id);
870
871         /* interface numbers are hardcoded in the spec */
872         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
873                 return -ENODEV;
874
875         if (!id->driver_info) {
876                 const struct usb_device_id *match;
877                 match = usb_match_id(intf, blacklist_table);
878                 if (match)
879                         id = match;
880         }
881
882         if (id->driver_info == BTUSB_IGNORE)
883                 return -ENODEV;
884
885         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
886                 return -ENODEV;
887
888         if (ignore_csr && id->driver_info & BTUSB_CSR)
889                 return -ENODEV;
890
891         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
892                 return -ENODEV;
893
894         data = kzalloc(sizeof(*data), GFP_KERNEL);
895         if (!data)
896                 return -ENOMEM;
897
898         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
899                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
900
901                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
902                         data->intr_ep = ep_desc;
903                         continue;
904                 }
905
906                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
907                         data->bulk_tx_ep = ep_desc;
908                         continue;
909                 }
910
911                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
912                         data->bulk_rx_ep = ep_desc;
913                         continue;
914                 }
915         }
916
917         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
918                 kfree(data);
919                 return -ENODEV;
920         }
921
922         data->cmdreq_type = USB_TYPE_CLASS;
923
924         data->udev = interface_to_usbdev(intf);
925         data->intf = intf;
926
927         spin_lock_init(&data->lock);
928
929         INIT_WORK(&data->work, btusb_work);
930         INIT_WORK(&data->waker, btusb_waker);
931         spin_lock_init(&data->txlock);
932
933         init_usb_anchor(&data->tx_anchor);
934         init_usb_anchor(&data->intr_anchor);
935         init_usb_anchor(&data->bulk_anchor);
936         init_usb_anchor(&data->isoc_anchor);
937         init_usb_anchor(&data->deferred);
938
939         hdev = hci_alloc_dev();
940         if (!hdev) {
941                 kfree(data);
942                 return -ENOMEM;
943         }
944
945         hdev->bus = HCI_USB;
946         hdev->driver_data = data;
947
948         data->hdev = hdev;
949
950         SET_HCIDEV_DEV(hdev, &intf->dev);
951
952         hdev->open     = btusb_open;
953         hdev->close    = btusb_close;
954         hdev->flush    = btusb_flush;
955         hdev->send     = btusb_send_frame;
956         hdev->destruct = btusb_destruct;
957         hdev->notify   = btusb_notify;
958
959         hdev->owner = THIS_MODULE;
960
961         /* Interface numbers are hardcoded in the specification */
962         data->isoc = usb_ifnum_to_if(data->udev, 1);
963
964         if (!reset)
965                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
966
967         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
968                 if (!disable_scofix)
969                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
970         }
971
972         if (id->driver_info & BTUSB_BROKEN_ISOC)
973                 data->isoc = NULL;
974
975         if (id->driver_info & BTUSB_DIGIANSWER) {
976                 data->cmdreq_type = USB_TYPE_VENDOR;
977                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
978         }
979
980         if (id->driver_info & BTUSB_CSR) {
981                 struct usb_device *udev = data->udev;
982
983                 /* Old firmware would otherwise execute USB reset */
984                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
985                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
986         }
987
988         if (id->driver_info & BTUSB_SNIFFER) {
989                 struct usb_device *udev = data->udev;
990
991                 /* New sniffer firmware has crippled HCI interface */
992                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
993                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
994
995                 data->isoc = NULL;
996         }
997
998         if (id->driver_info & BTUSB_BCM92035) {
999                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1000                 struct sk_buff *skb;
1001
1002                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1003                 if (skb) {
1004                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1005                         skb_queue_tail(&hdev->driver_init, skb);
1006                 }
1007         }
1008
1009         if (data->isoc) {
1010                 err = usb_driver_claim_interface(&btusb_driver,
1011                                                         data->isoc, data);
1012                 if (err < 0) {
1013                         hci_free_dev(hdev);
1014                         kfree(data);
1015                         return err;
1016                 }
1017         }
1018
1019         err = hci_register_dev(hdev);
1020         if (err < 0) {
1021                 hci_free_dev(hdev);
1022                 kfree(data);
1023                 return err;
1024         }
1025
1026         usb_set_intfdata(intf, data);
1027
1028         return 0;
1029 }
1030
1031 static void btusb_disconnect(struct usb_interface *intf)
1032 {
1033         struct btusb_data *data = usb_get_intfdata(intf);
1034         struct hci_dev *hdev;
1035
1036         BT_DBG("intf %p", intf);
1037
1038         if (!data)
1039                 return;
1040
1041         hdev = data->hdev;
1042
1043         __hci_dev_hold(hdev);
1044
1045         usb_set_intfdata(data->intf, NULL);
1046
1047         if (data->isoc)
1048                 usb_set_intfdata(data->isoc, NULL);
1049
1050         hci_unregister_dev(hdev);
1051
1052         if (intf == data->isoc)
1053                 usb_driver_release_interface(&btusb_driver, data->intf);
1054         else if (data->isoc)
1055                 usb_driver_release_interface(&btusb_driver, data->isoc);
1056
1057         __hci_dev_put(hdev);
1058
1059         hci_free_dev(hdev);
1060 }
1061
1062 #ifdef CONFIG_PM
1063 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1064 {
1065         struct btusb_data *data = usb_get_intfdata(intf);
1066
1067         BT_DBG("intf %p", intf);
1068
1069         if (data->suspend_count++)
1070                 return 0;
1071
1072         spin_lock_irq(&data->txlock);
1073         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1074                 set_bit(BTUSB_SUSPENDING, &data->flags);
1075                 spin_unlock_irq(&data->txlock);
1076         } else {
1077                 spin_unlock_irq(&data->txlock);
1078                 data->suspend_count--;
1079                 return -EBUSY;
1080         }
1081
1082         cancel_work_sync(&data->work);
1083
1084         btusb_stop_traffic(data);
1085         usb_kill_anchored_urbs(&data->tx_anchor);
1086
1087         return 0;
1088 }
1089
1090 static void play_deferred(struct btusb_data *data)
1091 {
1092         struct urb *urb;
1093         int err;
1094
1095         while ((urb = usb_get_from_anchor(&data->deferred))) {
1096                 err = usb_submit_urb(urb, GFP_ATOMIC);
1097                 if (err < 0)
1098                         break;
1099
1100                 data->tx_in_flight++;
1101         }
1102         usb_scuttle_anchored_urbs(&data->deferred);
1103 }
1104
1105 static int btusb_resume(struct usb_interface *intf)
1106 {
1107         struct btusb_data *data = usb_get_intfdata(intf);
1108         struct hci_dev *hdev = data->hdev;
1109         int err = 0;
1110
1111         BT_DBG("intf %p", intf);
1112
1113         if (--data->suspend_count)
1114                 return 0;
1115
1116         if (!test_bit(HCI_RUNNING, &hdev->flags))
1117                 goto done;
1118
1119         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1120                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1121                 if (err < 0) {
1122                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1123                         goto failed;
1124                 }
1125         }
1126
1127         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1128                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1129                 if (err < 0) {
1130                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1131                         goto failed;
1132                 }
1133
1134                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1135         }
1136
1137         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1138                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1139                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1140                 else
1141                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1142         }
1143
1144         spin_lock_irq(&data->txlock);
1145         play_deferred(data);
1146         clear_bit(BTUSB_SUSPENDING, &data->flags);
1147         spin_unlock_irq(&data->txlock);
1148         schedule_work(&data->work);
1149
1150         return 0;
1151
1152 failed:
1153         usb_scuttle_anchored_urbs(&data->deferred);
1154 done:
1155         spin_lock_irq(&data->txlock);
1156         clear_bit(BTUSB_SUSPENDING, &data->flags);
1157         spin_unlock_irq(&data->txlock);
1158
1159         return err;
1160 }
1161 #endif
1162
1163 static struct usb_driver btusb_driver = {
1164         .name           = "btusb",
1165         .probe          = btusb_probe,
1166         .disconnect     = btusb_disconnect,
1167 #ifdef CONFIG_PM
1168         .suspend        = btusb_suspend,
1169         .resume         = btusb_resume,
1170 #endif
1171         .id_table       = btusb_table,
1172         .supports_autosuspend = 1,
1173 };
1174
1175 static int __init btusb_init(void)
1176 {
1177         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1178
1179         return usb_register(&btusb_driver);
1180 }
1181
1182 static void __exit btusb_exit(void)
1183 {
1184         usb_deregister(&btusb_driver);
1185 }
1186
1187 module_init(btusb_init);
1188 module_exit(btusb_exit);
1189
1190 module_param(ignore_dga, bool, 0644);
1191 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1192
1193 module_param(ignore_csr, bool, 0644);
1194 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1195
1196 module_param(ignore_sniffer, bool, 0644);
1197 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1198
1199 module_param(disable_scofix, bool, 0644);
1200 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1201
1202 module_param(force_scofix, bool, 0644);
1203 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1204
1205 module_param(reset, bool, 0644);
1206 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1207
1208 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1209 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1210 MODULE_VERSION(VERSION);
1211 MODULE_LICENSE("GPL");