Bluetooth: Add support Bluetooth controller of MacbookPro 6,2
[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         /* Apple MacBookPro6,2 */
66         { USB_DEVICE(0x05ac, 0x8218) },
67
68         /* AVM BlueFRITZ! USB v2.0 */
69         { USB_DEVICE(0x057c, 0x3800) },
70
71         /* Bluetooth Ultraport Module from IBM */
72         { USB_DEVICE(0x04bf, 0x030a) },
73
74         /* ALPS Modules with non-standard id */
75         { USB_DEVICE(0x044e, 0x3001) },
76         { USB_DEVICE(0x044e, 0x3002) },
77
78         /* Ericsson with non-standard id */
79         { USB_DEVICE(0x0bdb, 0x1002) },
80
81         /* Canyon CN-BTU1 with HID interfaces */
82         { USB_DEVICE(0x0c10, 0x0000) },
83
84         { }     /* Terminating entry */
85 };
86
87 MODULE_DEVICE_TABLE(usb, btusb_table);
88
89 static struct usb_device_id blacklist_table[] = {
90         /* CSR BlueCore devices */
91         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
92
93         /* Broadcom BCM2033 without firmware */
94         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
95
96         /* Broadcom BCM2035 */
97         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
98         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
99         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
100
101         /* Broadcom BCM2045 */
102         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
103         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
104
105         /* IBM/Lenovo ThinkPad with Broadcom chip */
106         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
107         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
108
109         /* HP laptop with Broadcom chip */
110         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
111
112         /* Dell laptop with Broadcom chip */
113         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
114
115         /* Dell Wireless 370 and 410 devices */
116         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
117         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
118
119         /* Belkin F8T012 and F8T013 devices */
120         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
121         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
122
123         /* Asus WL-BTD202 device */
124         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
125
126         /* Kensington Bluetooth USB adapter */
127         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
128
129         /* RTX Telecom based adapters with buggy SCO support */
130         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
131         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
132
133         /* CONWISE Technology based adapters with buggy SCO support */
134         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
135
136         /* Digianswer devices */
137         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
138         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
139
140         /* CSR BlueCore Bluetooth Sniffer */
141         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
142
143         /* Frontline ComProbe Bluetooth Sniffer */
144         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
145
146         { }     /* Terminating entry */
147 };
148
149 #define BTUSB_MAX_ISOC_FRAMES   10
150
151 #define BTUSB_INTR_RUNNING      0
152 #define BTUSB_BULK_RUNNING      1
153 #define BTUSB_ISOC_RUNNING      2
154 #define BTUSB_SUSPENDING        3
155 #define BTUSB_DID_ISO_RESUME    4
156
157 struct btusb_data {
158         struct hci_dev       *hdev;
159         struct usb_device    *udev;
160         struct usb_interface *intf;
161         struct usb_interface *isoc;
162
163         spinlock_t lock;
164
165         unsigned long flags;
166
167         struct work_struct work;
168         struct work_struct waker;
169
170         struct usb_anchor tx_anchor;
171         struct usb_anchor intr_anchor;
172         struct usb_anchor bulk_anchor;
173         struct usb_anchor isoc_anchor;
174         struct usb_anchor deferred;
175         int tx_in_flight;
176         spinlock_t txlock;
177
178         struct usb_endpoint_descriptor *intr_ep;
179         struct usb_endpoint_descriptor *bulk_tx_ep;
180         struct usb_endpoint_descriptor *bulk_rx_ep;
181         struct usb_endpoint_descriptor *isoc_tx_ep;
182         struct usb_endpoint_descriptor *isoc_rx_ep;
183
184         __u8 cmdreq_type;
185
186         unsigned int sco_num;
187         int isoc_altsetting;
188         int suspend_count;
189 };
190
191 static int inc_tx(struct btusb_data *data)
192 {
193         unsigned long flags;
194         int rv;
195
196         spin_lock_irqsave(&data->txlock, flags);
197         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
198         if (!rv)
199                 data->tx_in_flight++;
200         spin_unlock_irqrestore(&data->txlock, flags);
201
202         return rv;
203 }
204
205 static void btusb_intr_complete(struct urb *urb)
206 {
207         struct hci_dev *hdev = urb->context;
208         struct btusb_data *data = hdev->driver_data;
209         int err;
210
211         BT_DBG("%s urb %p status %d count %d", hdev->name,
212                                         urb, urb->status, urb->actual_length);
213
214         if (!test_bit(HCI_RUNNING, &hdev->flags))
215                 return;
216
217         if (urb->status == 0) {
218                 hdev->stat.byte_rx += urb->actual_length;
219
220                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
221                                                 urb->transfer_buffer,
222                                                 urb->actual_length) < 0) {
223                         BT_ERR("%s corrupted event packet", hdev->name);
224                         hdev->stat.err_rx++;
225                 }
226         }
227
228         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
229                 return;
230
231         usb_mark_last_busy(data->udev);
232         usb_anchor_urb(urb, &data->intr_anchor);
233
234         err = usb_submit_urb(urb, GFP_ATOMIC);
235         if (err < 0) {
236                 BT_ERR("%s urb %p failed to resubmit (%d)",
237                                                 hdev->name, urb, -err);
238                 usb_unanchor_urb(urb);
239         }
240 }
241
242 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
243 {
244         struct btusb_data *data = hdev->driver_data;
245         struct urb *urb;
246         unsigned char *buf;
247         unsigned int pipe;
248         int err, size;
249
250         BT_DBG("%s", hdev->name);
251
252         if (!data->intr_ep)
253                 return -ENODEV;
254
255         urb = usb_alloc_urb(0, mem_flags);
256         if (!urb)
257                 return -ENOMEM;
258
259         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
260
261         buf = kmalloc(size, mem_flags);
262         if (!buf) {
263                 usb_free_urb(urb);
264                 return -ENOMEM;
265         }
266
267         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
268
269         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
270                                                 btusb_intr_complete, hdev,
271                                                 data->intr_ep->bInterval);
272
273         urb->transfer_flags |= URB_FREE_BUFFER;
274
275         usb_anchor_urb(urb, &data->intr_anchor);
276
277         err = usb_submit_urb(urb, mem_flags);
278         if (err < 0) {
279                 BT_ERR("%s urb %p submission failed (%d)",
280                                                 hdev->name, urb, -err);
281                 usb_unanchor_urb(urb);
282         }
283
284         usb_free_urb(urb);
285
286         return err;
287 }
288
289 static void btusb_bulk_complete(struct urb *urb)
290 {
291         struct hci_dev *hdev = urb->context;
292         struct btusb_data *data = hdev->driver_data;
293         int err;
294
295         BT_DBG("%s urb %p status %d count %d", hdev->name,
296                                         urb, urb->status, urb->actual_length);
297
298         if (!test_bit(HCI_RUNNING, &hdev->flags))
299                 return;
300
301         if (urb->status == 0) {
302                 hdev->stat.byte_rx += urb->actual_length;
303
304                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
305                                                 urb->transfer_buffer,
306                                                 urb->actual_length) < 0) {
307                         BT_ERR("%s corrupted ACL packet", hdev->name);
308                         hdev->stat.err_rx++;
309                 }
310         }
311
312         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
313                 return;
314
315         usb_anchor_urb(urb, &data->bulk_anchor);
316         usb_mark_last_busy(data->udev);
317
318         err = usb_submit_urb(urb, GFP_ATOMIC);
319         if (err < 0) {
320                 BT_ERR("%s urb %p failed to resubmit (%d)",
321                                                 hdev->name, urb, -err);
322                 usb_unanchor_urb(urb);
323         }
324 }
325
326 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
327 {
328         struct btusb_data *data = hdev->driver_data;
329         struct urb *urb;
330         unsigned char *buf;
331         unsigned int pipe;
332         int err, size = HCI_MAX_FRAME_SIZE;
333
334         BT_DBG("%s", hdev->name);
335
336         if (!data->bulk_rx_ep)
337                 return -ENODEV;
338
339         urb = usb_alloc_urb(0, mem_flags);
340         if (!urb)
341                 return -ENOMEM;
342
343         buf = kmalloc(size, mem_flags);
344         if (!buf) {
345                 usb_free_urb(urb);
346                 return -ENOMEM;
347         }
348
349         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
350
351         usb_fill_bulk_urb(urb, data->udev, pipe,
352                                         buf, size, btusb_bulk_complete, hdev);
353
354         urb->transfer_flags |= URB_FREE_BUFFER;
355
356         usb_mark_last_busy(data->udev);
357         usb_anchor_urb(urb, &data->bulk_anchor);
358
359         err = usb_submit_urb(urb, mem_flags);
360         if (err < 0) {
361                 BT_ERR("%s urb %p submission failed (%d)",
362                                                 hdev->name, urb, -err);
363                 usb_unanchor_urb(urb);
364         }
365
366         usb_free_urb(urb);
367
368         return err;
369 }
370
371 static void btusb_isoc_complete(struct urb *urb)
372 {
373         struct hci_dev *hdev = urb->context;
374         struct btusb_data *data = hdev->driver_data;
375         int i, err;
376
377         BT_DBG("%s urb %p status %d count %d", hdev->name,
378                                         urb, urb->status, urb->actual_length);
379
380         if (!test_bit(HCI_RUNNING, &hdev->flags))
381                 return;
382
383         if (urb->status == 0) {
384                 for (i = 0; i < urb->number_of_packets; i++) {
385                         unsigned int offset = urb->iso_frame_desc[i].offset;
386                         unsigned int length = urb->iso_frame_desc[i].actual_length;
387
388                         if (urb->iso_frame_desc[i].status)
389                                 continue;
390
391                         hdev->stat.byte_rx += length;
392
393                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
394                                                 urb->transfer_buffer + offset,
395                                                                 length) < 0) {
396                                 BT_ERR("%s corrupted SCO packet", hdev->name);
397                                 hdev->stat.err_rx++;
398                         }
399                 }
400         }
401
402         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
403                 return;
404
405         usb_anchor_urb(urb, &data->isoc_anchor);
406
407         err = usb_submit_urb(urb, GFP_ATOMIC);
408         if (err < 0) {
409                 BT_ERR("%s urb %p failed to resubmit (%d)",
410                                                 hdev->name, urb, -err);
411                 usb_unanchor_urb(urb);
412         }
413 }
414
415 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
416 {
417         int i, offset = 0;
418
419         BT_DBG("len %d mtu %d", len, mtu);
420
421         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
422                                         i++, offset += mtu, len -= mtu) {
423                 urb->iso_frame_desc[i].offset = offset;
424                 urb->iso_frame_desc[i].length = mtu;
425         }
426
427         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
428                 urb->iso_frame_desc[i].offset = offset;
429                 urb->iso_frame_desc[i].length = len;
430                 i++;
431         }
432
433         urb->number_of_packets = i;
434 }
435
436 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
437 {
438         struct btusb_data *data = hdev->driver_data;
439         struct urb *urb;
440         unsigned char *buf;
441         unsigned int pipe;
442         int err, size;
443
444         BT_DBG("%s", hdev->name);
445
446         if (!data->isoc_rx_ep)
447                 return -ENODEV;
448
449         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
450         if (!urb)
451                 return -ENOMEM;
452
453         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
454                                                 BTUSB_MAX_ISOC_FRAMES;
455
456         buf = kmalloc(size, mem_flags);
457         if (!buf) {
458                 usb_free_urb(urb);
459                 return -ENOMEM;
460         }
461
462         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
463
464         urb->dev      = data->udev;
465         urb->pipe     = pipe;
466         urb->context  = hdev;
467         urb->complete = btusb_isoc_complete;
468         urb->interval = data->isoc_rx_ep->bInterval;
469
470         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
471         urb->transfer_buffer = buf;
472         urb->transfer_buffer_length = size;
473
474         __fill_isoc_descriptor(urb, size,
475                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
476
477         usb_anchor_urb(urb, &data->isoc_anchor);
478
479         err = usb_submit_urb(urb, mem_flags);
480         if (err < 0) {
481                 BT_ERR("%s urb %p submission failed (%d)",
482                                                 hdev->name, urb, -err);
483                 usb_unanchor_urb(urb);
484         }
485
486         usb_free_urb(urb);
487
488         return err;
489 }
490
491 static void btusb_tx_complete(struct urb *urb)
492 {
493         struct sk_buff *skb = urb->context;
494         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
495         struct btusb_data *data = hdev->driver_data;
496
497         BT_DBG("%s urb %p status %d count %d", hdev->name,
498                                         urb, urb->status, urb->actual_length);
499
500         if (!test_bit(HCI_RUNNING, &hdev->flags))
501                 goto done;
502
503         if (!urb->status)
504                 hdev->stat.byte_tx += urb->transfer_buffer_length;
505         else
506                 hdev->stat.err_tx++;
507
508 done:
509         spin_lock(&data->txlock);
510         data->tx_in_flight--;
511         spin_unlock(&data->txlock);
512
513         kfree(urb->setup_packet);
514
515         kfree_skb(skb);
516 }
517
518 static void btusb_isoc_tx_complete(struct urb *urb)
519 {
520         struct sk_buff *skb = urb->context;
521         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
522
523         BT_DBG("%s urb %p status %d count %d", hdev->name,
524                                         urb, urb->status, urb->actual_length);
525
526         if (!test_bit(HCI_RUNNING, &hdev->flags))
527                 goto done;
528
529         if (!urb->status)
530                 hdev->stat.byte_tx += urb->transfer_buffer_length;
531         else
532                 hdev->stat.err_tx++;
533
534 done:
535         kfree(urb->setup_packet);
536
537         kfree_skb(skb);
538 }
539
540 static int btusb_open(struct hci_dev *hdev)
541 {
542         struct btusb_data *data = hdev->driver_data;
543         int err;
544
545         BT_DBG("%s", hdev->name);
546
547         err = usb_autopm_get_interface(data->intf);
548         if (err < 0)
549                 return err;
550
551         data->intf->needs_remote_wakeup = 1;
552
553         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
554                 goto done;
555
556         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
557                 goto done;
558
559         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
560         if (err < 0)
561                 goto failed;
562
563         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
564         if (err < 0) {
565                 usb_kill_anchored_urbs(&data->intr_anchor);
566                 goto failed;
567         }
568
569         set_bit(BTUSB_BULK_RUNNING, &data->flags);
570         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
571
572 done:
573         usb_autopm_put_interface(data->intf);
574         return 0;
575
576 failed:
577         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
578         clear_bit(HCI_RUNNING, &hdev->flags);
579         usb_autopm_put_interface(data->intf);
580         return err;
581 }
582
583 static void btusb_stop_traffic(struct btusb_data *data)
584 {
585         usb_kill_anchored_urbs(&data->intr_anchor);
586         usb_kill_anchored_urbs(&data->bulk_anchor);
587         usb_kill_anchored_urbs(&data->isoc_anchor);
588 }
589
590 static int btusb_close(struct hci_dev *hdev)
591 {
592         struct btusb_data *data = hdev->driver_data;
593         int err;
594
595         BT_DBG("%s", hdev->name);
596
597         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
598                 return 0;
599
600         cancel_work_sync(&data->work);
601         cancel_work_sync(&data->waker);
602
603         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
604         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
605         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
606
607         btusb_stop_traffic(data);
608         err = usb_autopm_get_interface(data->intf);
609         if (err < 0)
610                 goto failed;
611
612         data->intf->needs_remote_wakeup = 0;
613         usb_autopm_put_interface(data->intf);
614
615 failed:
616         usb_scuttle_anchored_urbs(&data->deferred);
617         return 0;
618 }
619
620 static int btusb_flush(struct hci_dev *hdev)
621 {
622         struct btusb_data *data = hdev->driver_data;
623
624         BT_DBG("%s", hdev->name);
625
626         usb_kill_anchored_urbs(&data->tx_anchor);
627
628         return 0;
629 }
630
631 static int btusb_send_frame(struct sk_buff *skb)
632 {
633         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
634         struct btusb_data *data = hdev->driver_data;
635         struct usb_ctrlrequest *dr;
636         struct urb *urb;
637         unsigned int pipe;
638         int err;
639
640         BT_DBG("%s", hdev->name);
641
642         if (!test_bit(HCI_RUNNING, &hdev->flags))
643                 return -EBUSY;
644
645         switch (bt_cb(skb)->pkt_type) {
646         case HCI_COMMAND_PKT:
647                 urb = usb_alloc_urb(0, GFP_ATOMIC);
648                 if (!urb)
649                         return -ENOMEM;
650
651                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
652                 if (!dr) {
653                         usb_free_urb(urb);
654                         return -ENOMEM;
655                 }
656
657                 dr->bRequestType = data->cmdreq_type;
658                 dr->bRequest     = 0;
659                 dr->wIndex       = 0;
660                 dr->wValue       = 0;
661                 dr->wLength      = __cpu_to_le16(skb->len);
662
663                 pipe = usb_sndctrlpipe(data->udev, 0x00);
664
665                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
666                                 skb->data, skb->len, btusb_tx_complete, skb);
667
668                 hdev->stat.cmd_tx++;
669                 break;
670
671         case HCI_ACLDATA_PKT:
672                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
673                         return -ENODEV;
674
675                 urb = usb_alloc_urb(0, GFP_ATOMIC);
676                 if (!urb)
677                         return -ENOMEM;
678
679                 pipe = usb_sndbulkpipe(data->udev,
680                                         data->bulk_tx_ep->bEndpointAddress);
681
682                 usb_fill_bulk_urb(urb, data->udev, pipe,
683                                 skb->data, skb->len, btusb_tx_complete, skb);
684
685                 hdev->stat.acl_tx++;
686                 break;
687
688         case HCI_SCODATA_PKT:
689                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
690                         return -ENODEV;
691
692                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
693                 if (!urb)
694                         return -ENOMEM;
695
696                 pipe = usb_sndisocpipe(data->udev,
697                                         data->isoc_tx_ep->bEndpointAddress);
698
699                 urb->dev      = data->udev;
700                 urb->pipe     = pipe;
701                 urb->context  = skb;
702                 urb->complete = btusb_isoc_tx_complete;
703                 urb->interval = data->isoc_tx_ep->bInterval;
704
705                 urb->transfer_flags  = URB_ISO_ASAP;
706                 urb->transfer_buffer = skb->data;
707                 urb->transfer_buffer_length = skb->len;
708
709                 __fill_isoc_descriptor(urb, skb->len,
710                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
711
712                 hdev->stat.sco_tx++;
713                 goto skip_waking;
714
715         default:
716                 return -EILSEQ;
717         }
718
719         err = inc_tx(data);
720         if (err) {
721                 usb_anchor_urb(urb, &data->deferred);
722                 schedule_work(&data->waker);
723                 err = 0;
724                 goto done;
725         }
726
727 skip_waking:
728         usb_anchor_urb(urb, &data->tx_anchor);
729
730         err = usb_submit_urb(urb, GFP_ATOMIC);
731         if (err < 0) {
732                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
733                 kfree(urb->setup_packet);
734                 usb_unanchor_urb(urb);
735         } else {
736                 usb_mark_last_busy(data->udev);
737         }
738
739         usb_free_urb(urb);
740
741 done:
742         return err;
743 }
744
745 static void btusb_destruct(struct hci_dev *hdev)
746 {
747         struct btusb_data *data = hdev->driver_data;
748
749         BT_DBG("%s", hdev->name);
750
751         kfree(data);
752 }
753
754 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
755 {
756         struct btusb_data *data = hdev->driver_data;
757
758         BT_DBG("%s evt %d", hdev->name, evt);
759
760         if (hdev->conn_hash.sco_num != data->sco_num) {
761                 data->sco_num = hdev->conn_hash.sco_num;
762                 schedule_work(&data->work);
763         }
764 }
765
766 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
767 {
768         struct btusb_data *data = hdev->driver_data;
769         struct usb_interface *intf = data->isoc;
770         struct usb_endpoint_descriptor *ep_desc;
771         int i, err;
772
773         if (!data->isoc)
774                 return -ENODEV;
775
776         err = usb_set_interface(data->udev, 1, altsetting);
777         if (err < 0) {
778                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
779                 return err;
780         }
781
782         data->isoc_altsetting = altsetting;
783
784         data->isoc_tx_ep = NULL;
785         data->isoc_rx_ep = NULL;
786
787         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
788                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
789
790                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
791                         data->isoc_tx_ep = ep_desc;
792                         continue;
793                 }
794
795                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
796                         data->isoc_rx_ep = ep_desc;
797                         continue;
798                 }
799         }
800
801         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
802                 BT_ERR("%s invalid SCO descriptors", hdev->name);
803                 return -ENODEV;
804         }
805
806         return 0;
807 }
808
809 static void btusb_work(struct work_struct *work)
810 {
811         struct btusb_data *data = container_of(work, struct btusb_data, work);
812         struct hci_dev *hdev = data->hdev;
813         int err;
814
815         if (hdev->conn_hash.sco_num > 0) {
816                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
817                         err = usb_autopm_get_interface(data->isoc);
818                         if (err < 0) {
819                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
820                                 usb_kill_anchored_urbs(&data->isoc_anchor);
821                                 return;
822                         }
823
824                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
825                 }
826                 if (data->isoc_altsetting != 2) {
827                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
828                         usb_kill_anchored_urbs(&data->isoc_anchor);
829
830                         if (__set_isoc_interface(hdev, 2) < 0)
831                                 return;
832                 }
833
834                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
835                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
836                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
837                         else
838                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
839                 }
840         } else {
841                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
842                 usb_kill_anchored_urbs(&data->isoc_anchor);
843
844                 __set_isoc_interface(hdev, 0);
845                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
846                         usb_autopm_put_interface(data->isoc);
847         }
848 }
849
850 static void btusb_waker(struct work_struct *work)
851 {
852         struct btusb_data *data = container_of(work, struct btusb_data, waker);
853         int err;
854
855         err = usb_autopm_get_interface(data->intf);
856         if (err < 0)
857                 return;
858
859         usb_autopm_put_interface(data->intf);
860 }
861
862 static int btusb_probe(struct usb_interface *intf,
863                                 const struct usb_device_id *id)
864 {
865         struct usb_endpoint_descriptor *ep_desc;
866         struct btusb_data *data;
867         struct hci_dev *hdev;
868         int i, err;
869
870         BT_DBG("intf %p id %p", intf, id);
871
872         /* interface numbers are hardcoded in the spec */
873         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
874                 return -ENODEV;
875
876         if (!id->driver_info) {
877                 const struct usb_device_id *match;
878                 match = usb_match_id(intf, blacklist_table);
879                 if (match)
880                         id = match;
881         }
882
883         if (id->driver_info == BTUSB_IGNORE)
884                 return -ENODEV;
885
886         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
887                 return -ENODEV;
888
889         if (ignore_csr && id->driver_info & BTUSB_CSR)
890                 return -ENODEV;
891
892         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
893                 return -ENODEV;
894
895         data = kzalloc(sizeof(*data), GFP_KERNEL);
896         if (!data)
897                 return -ENOMEM;
898
899         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
900                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
901
902                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
903                         data->intr_ep = ep_desc;
904                         continue;
905                 }
906
907                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
908                         data->bulk_tx_ep = ep_desc;
909                         continue;
910                 }
911
912                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
913                         data->bulk_rx_ep = ep_desc;
914                         continue;
915                 }
916         }
917
918         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
919                 kfree(data);
920                 return -ENODEV;
921         }
922
923         data->cmdreq_type = USB_TYPE_CLASS;
924
925         data->udev = interface_to_usbdev(intf);
926         data->intf = intf;
927
928         spin_lock_init(&data->lock);
929
930         INIT_WORK(&data->work, btusb_work);
931         INIT_WORK(&data->waker, btusb_waker);
932         spin_lock_init(&data->txlock);
933
934         init_usb_anchor(&data->tx_anchor);
935         init_usb_anchor(&data->intr_anchor);
936         init_usb_anchor(&data->bulk_anchor);
937         init_usb_anchor(&data->isoc_anchor);
938         init_usb_anchor(&data->deferred);
939
940         hdev = hci_alloc_dev();
941         if (!hdev) {
942                 kfree(data);
943                 return -ENOMEM;
944         }
945
946         hdev->bus = HCI_USB;
947         hdev->driver_data = data;
948
949         data->hdev = hdev;
950
951         SET_HCIDEV_DEV(hdev, &intf->dev);
952
953         hdev->open     = btusb_open;
954         hdev->close    = btusb_close;
955         hdev->flush    = btusb_flush;
956         hdev->send     = btusb_send_frame;
957         hdev->destruct = btusb_destruct;
958         hdev->notify   = btusb_notify;
959
960         hdev->owner = THIS_MODULE;
961
962         /* Interface numbers are hardcoded in the specification */
963         data->isoc = usb_ifnum_to_if(data->udev, 1);
964
965         if (!reset)
966                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
967
968         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
969                 if (!disable_scofix)
970                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
971         }
972
973         if (id->driver_info & BTUSB_BROKEN_ISOC)
974                 data->isoc = NULL;
975
976         if (id->driver_info & BTUSB_DIGIANSWER) {
977                 data->cmdreq_type = USB_TYPE_VENDOR;
978                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
979         }
980
981         if (id->driver_info & BTUSB_CSR) {
982                 struct usb_device *udev = data->udev;
983
984                 /* Old firmware would otherwise execute USB reset */
985                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
986                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
987         }
988
989         if (id->driver_info & BTUSB_SNIFFER) {
990                 struct usb_device *udev = data->udev;
991
992                 /* New sniffer firmware has crippled HCI interface */
993                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
994                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
995
996                 data->isoc = NULL;
997         }
998
999         if (id->driver_info & BTUSB_BCM92035) {
1000                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1001                 struct sk_buff *skb;
1002
1003                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1004                 if (skb) {
1005                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1006                         skb_queue_tail(&hdev->driver_init, skb);
1007                 }
1008         }
1009
1010         if (data->isoc) {
1011                 err = usb_driver_claim_interface(&btusb_driver,
1012                                                         data->isoc, data);
1013                 if (err < 0) {
1014                         hci_free_dev(hdev);
1015                         kfree(data);
1016                         return err;
1017                 }
1018         }
1019
1020         err = hci_register_dev(hdev);
1021         if (err < 0) {
1022                 hci_free_dev(hdev);
1023                 kfree(data);
1024                 return err;
1025         }
1026
1027         usb_set_intfdata(intf, data);
1028
1029         return 0;
1030 }
1031
1032 static void btusb_disconnect(struct usb_interface *intf)
1033 {
1034         struct btusb_data *data = usb_get_intfdata(intf);
1035         struct hci_dev *hdev;
1036
1037         BT_DBG("intf %p", intf);
1038
1039         if (!data)
1040                 return;
1041
1042         hdev = data->hdev;
1043
1044         __hci_dev_hold(hdev);
1045
1046         usb_set_intfdata(data->intf, NULL);
1047
1048         if (data->isoc)
1049                 usb_set_intfdata(data->isoc, NULL);
1050
1051         hci_unregister_dev(hdev);
1052
1053         if (intf == data->isoc)
1054                 usb_driver_release_interface(&btusb_driver, data->intf);
1055         else if (data->isoc)
1056                 usb_driver_release_interface(&btusb_driver, data->isoc);
1057
1058         __hci_dev_put(hdev);
1059
1060         hci_free_dev(hdev);
1061 }
1062
1063 #ifdef CONFIG_PM
1064 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1065 {
1066         struct btusb_data *data = usb_get_intfdata(intf);
1067
1068         BT_DBG("intf %p", intf);
1069
1070         if (data->suspend_count++)
1071                 return 0;
1072
1073         spin_lock_irq(&data->txlock);
1074         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1075                 set_bit(BTUSB_SUSPENDING, &data->flags);
1076                 spin_unlock_irq(&data->txlock);
1077         } else {
1078                 spin_unlock_irq(&data->txlock);
1079                 data->suspend_count--;
1080                 return -EBUSY;
1081         }
1082
1083         cancel_work_sync(&data->work);
1084
1085         btusb_stop_traffic(data);
1086         usb_kill_anchored_urbs(&data->tx_anchor);
1087
1088         return 0;
1089 }
1090
1091 static void play_deferred(struct btusb_data *data)
1092 {
1093         struct urb *urb;
1094         int err;
1095
1096         while ((urb = usb_get_from_anchor(&data->deferred))) {
1097                 err = usb_submit_urb(urb, GFP_ATOMIC);
1098                 if (err < 0)
1099                         break;
1100
1101                 data->tx_in_flight++;
1102         }
1103         usb_scuttle_anchored_urbs(&data->deferred);
1104 }
1105
1106 static int btusb_resume(struct usb_interface *intf)
1107 {
1108         struct btusb_data *data = usb_get_intfdata(intf);
1109         struct hci_dev *hdev = data->hdev;
1110         int err = 0;
1111
1112         BT_DBG("intf %p", intf);
1113
1114         if (--data->suspend_count)
1115                 return 0;
1116
1117         if (!test_bit(HCI_RUNNING, &hdev->flags))
1118                 goto done;
1119
1120         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1121                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1122                 if (err < 0) {
1123                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1124                         goto failed;
1125                 }
1126         }
1127
1128         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1129                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1130                 if (err < 0) {
1131                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1132                         goto failed;
1133                 }
1134
1135                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1136         }
1137
1138         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1139                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1140                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1141                 else
1142                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1143         }
1144
1145         spin_lock_irq(&data->txlock);
1146         play_deferred(data);
1147         clear_bit(BTUSB_SUSPENDING, &data->flags);
1148         spin_unlock_irq(&data->txlock);
1149         schedule_work(&data->work);
1150
1151         return 0;
1152
1153 failed:
1154         usb_scuttle_anchored_urbs(&data->deferred);
1155 done:
1156         spin_lock_irq(&data->txlock);
1157         clear_bit(BTUSB_SUSPENDING, &data->flags);
1158         spin_unlock_irq(&data->txlock);
1159
1160         return err;
1161 }
1162 #endif
1163
1164 static struct usb_driver btusb_driver = {
1165         .name           = "btusb",
1166         .probe          = btusb_probe,
1167         .disconnect     = btusb_disconnect,
1168 #ifdef CONFIG_PM
1169         .suspend        = btusb_suspend,
1170         .resume         = btusb_resume,
1171 #endif
1172         .id_table       = btusb_table,
1173         .supports_autosuspend = 1,
1174 };
1175
1176 static int __init btusb_init(void)
1177 {
1178         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1179
1180         return usb_register(&btusb_driver);
1181 }
1182
1183 static void __exit btusb_exit(void)
1184 {
1185         usb_deregister(&btusb_driver);
1186 }
1187
1188 module_init(btusb_init);
1189 module_exit(btusb_exit);
1190
1191 module_param(ignore_dga, bool, 0644);
1192 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1193
1194 module_param(ignore_csr, bool, 0644);
1195 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1196
1197 module_param(ignore_sniffer, bool, 0644);
1198 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1199
1200 module_param(disable_scofix, bool, 0644);
1201 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1202
1203 module_param(force_scofix, bool, 0644);
1204 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1205
1206 module_param(reset, bool, 0644);
1207 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1208
1209 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1210 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1211 MODULE_VERSION(VERSION);
1212 MODULE_LICENSE("GPL");