Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[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         /* AVM BlueFRITZ! USB v2.0 */
63         { USB_DEVICE(0x057c, 0x3800) },
64
65         /* Bluetooth Ultraport Module from IBM */
66         { USB_DEVICE(0x04bf, 0x030a) },
67
68         /* ALPS Modules with non-standard id */
69         { USB_DEVICE(0x044e, 0x3001) },
70         { USB_DEVICE(0x044e, 0x3002) },
71
72         /* Ericsson with non-standard id */
73         { USB_DEVICE(0x0bdb, 0x1002) },
74
75         /* Canyon CN-BTU1 with HID interfaces */
76         { USB_DEVICE(0x0c10, 0x0000) },
77
78         { }     /* Terminating entry */
79 };
80
81 MODULE_DEVICE_TABLE(usb, btusb_table);
82
83 static struct usb_device_id blacklist_table[] = {
84         /* CSR BlueCore devices */
85         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
86
87         /* Broadcom BCM2033 without firmware */
88         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
89
90         /* Broadcom BCM2035 */
91         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
92         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
93         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
94
95         /* Broadcom BCM2045 */
96         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
97         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
98
99         /* IBM/Lenovo ThinkPad with Broadcom chip */
100         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
101         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
102
103         /* HP laptop with Broadcom chip */
104         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
105
106         /* Dell laptop with Broadcom chip */
107         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
108
109         /* Dell Wireless 370 and 410 devices */
110         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
111         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
112
113         /* Belkin F8T012 and F8T013 devices */
114         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
115         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
116
117         /* Asus WL-BTD202 device */
118         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
119
120         /* Kensington Bluetooth USB adapter */
121         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
122
123         /* RTX Telecom based adapters with buggy SCO support */
124         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
125         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
126
127         /* CONWISE Technology based adapters with buggy SCO support */
128         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
129
130         /* Digianswer devices */
131         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
132         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
133
134         /* CSR BlueCore Bluetooth Sniffer */
135         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
136
137         /* Frontline ComProbe Bluetooth Sniffer */
138         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
139
140         { }     /* Terminating entry */
141 };
142
143 #define BTUSB_MAX_ISOC_FRAMES   10
144
145 #define BTUSB_INTR_RUNNING      0
146 #define BTUSB_BULK_RUNNING      1
147 #define BTUSB_ISOC_RUNNING      2
148 #define BTUSB_SUSPENDING        3
149
150 struct btusb_data {
151         struct hci_dev       *hdev;
152         struct usb_device    *udev;
153         struct usb_interface *intf;
154         struct usb_interface *isoc;
155
156         spinlock_t lock;
157
158         unsigned long flags;
159
160         struct work_struct work;
161         struct work_struct waker;
162
163         struct usb_anchor tx_anchor;
164         struct usb_anchor intr_anchor;
165         struct usb_anchor bulk_anchor;
166         struct usb_anchor isoc_anchor;
167         struct usb_anchor deferred;
168         int tx_in_flight;
169         spinlock_t txlock;
170
171         struct usb_endpoint_descriptor *intr_ep;
172         struct usb_endpoint_descriptor *bulk_tx_ep;
173         struct usb_endpoint_descriptor *bulk_rx_ep;
174         struct usb_endpoint_descriptor *isoc_tx_ep;
175         struct usb_endpoint_descriptor *isoc_rx_ep;
176
177         __u8 cmdreq_type;
178
179         unsigned int sco_num;
180         int isoc_altsetting;
181         int suspend_count;
182         int did_iso_resume:1;
183 };
184
185 static int inc_tx(struct btusb_data *data)
186 {
187         unsigned long flags;
188         int rv;
189
190         spin_lock_irqsave(&data->txlock, flags);
191         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
192         if (!rv)
193                 data->tx_in_flight++;
194         spin_unlock_irqrestore(&data->txlock, flags);
195
196         return rv;
197 }
198
199 static void btusb_intr_complete(struct urb *urb)
200 {
201         struct hci_dev *hdev = urb->context;
202         struct btusb_data *data = hdev->driver_data;
203         int err;
204
205         BT_DBG("%s urb %p status %d count %d", hdev->name,
206                                         urb, urb->status, urb->actual_length);
207
208         if (!test_bit(HCI_RUNNING, &hdev->flags))
209                 return;
210
211         if (urb->status == 0) {
212                 hdev->stat.byte_rx += urb->actual_length;
213
214                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
215                                                 urb->transfer_buffer,
216                                                 urb->actual_length) < 0) {
217                         BT_ERR("%s corrupted event packet", hdev->name);
218                         hdev->stat.err_rx++;
219                 }
220         }
221
222         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
223                 return;
224
225         usb_mark_last_busy(data->udev);
226         usb_anchor_urb(urb, &data->intr_anchor);
227
228         err = usb_submit_urb(urb, GFP_ATOMIC);
229         if (err < 0) {
230                 BT_ERR("%s urb %p failed to resubmit (%d)",
231                                                 hdev->name, urb, -err);
232                 usb_unanchor_urb(urb);
233         }
234 }
235
236 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
237 {
238         struct btusb_data *data = hdev->driver_data;
239         struct urb *urb;
240         unsigned char *buf;
241         unsigned int pipe;
242         int err, size;
243
244         BT_DBG("%s", hdev->name);
245
246         if (!data->intr_ep)
247                 return -ENODEV;
248
249         urb = usb_alloc_urb(0, mem_flags);
250         if (!urb)
251                 return -ENOMEM;
252
253         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
254
255         buf = kmalloc(size, mem_flags);
256         if (!buf) {
257                 usb_free_urb(urb);
258                 return -ENOMEM;
259         }
260
261         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
262
263         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
264                                                 btusb_intr_complete, hdev,
265                                                 data->intr_ep->bInterval);
266
267         urb->transfer_flags |= URB_FREE_BUFFER;
268
269         usb_anchor_urb(urb, &data->intr_anchor);
270
271         err = usb_submit_urb(urb, mem_flags);
272         if (err < 0) {
273                 BT_ERR("%s urb %p submission failed (%d)",
274                                                 hdev->name, urb, -err);
275                 usb_unanchor_urb(urb);
276         }
277
278         usb_free_urb(urb);
279
280         return err;
281 }
282
283 static void btusb_bulk_complete(struct urb *urb)
284 {
285         struct hci_dev *hdev = urb->context;
286         struct btusb_data *data = hdev->driver_data;
287         int err;
288
289         BT_DBG("%s urb %p status %d count %d", hdev->name,
290                                         urb, urb->status, urb->actual_length);
291
292         if (!test_bit(HCI_RUNNING, &hdev->flags))
293                 return;
294
295         if (urb->status == 0) {
296                 hdev->stat.byte_rx += urb->actual_length;
297
298                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
299                                                 urb->transfer_buffer,
300                                                 urb->actual_length) < 0) {
301                         BT_ERR("%s corrupted ACL packet", hdev->name);
302                         hdev->stat.err_rx++;
303                 }
304         }
305
306         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
307                 return;
308
309         usb_anchor_urb(urb, &data->bulk_anchor);
310         usb_mark_last_busy(data->udev);
311
312         err = usb_submit_urb(urb, GFP_ATOMIC);
313         if (err < 0) {
314                 BT_ERR("%s urb %p failed to resubmit (%d)",
315                                                 hdev->name, urb, -err);
316                 usb_unanchor_urb(urb);
317         }
318 }
319
320 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
321 {
322         struct btusb_data *data = hdev->driver_data;
323         struct urb *urb;
324         unsigned char *buf;
325         unsigned int pipe;
326         int err, size = HCI_MAX_FRAME_SIZE;
327
328         BT_DBG("%s", hdev->name);
329
330         if (!data->bulk_rx_ep)
331                 return -ENODEV;
332
333         urb = usb_alloc_urb(0, mem_flags);
334         if (!urb)
335                 return -ENOMEM;
336
337         buf = kmalloc(size, mem_flags);
338         if (!buf) {
339                 usb_free_urb(urb);
340                 return -ENOMEM;
341         }
342
343         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
344
345         usb_fill_bulk_urb(urb, data->udev, pipe,
346                                         buf, size, btusb_bulk_complete, hdev);
347
348         urb->transfer_flags |= URB_FREE_BUFFER;
349
350         usb_mark_last_busy(data->udev);
351         usb_anchor_urb(urb, &data->bulk_anchor);
352
353         err = usb_submit_urb(urb, mem_flags);
354         if (err < 0) {
355                 BT_ERR("%s urb %p submission failed (%d)",
356                                                 hdev->name, urb, -err);
357                 usb_unanchor_urb(urb);
358         }
359
360         usb_free_urb(urb);
361
362         return err;
363 }
364
365 static void btusb_isoc_complete(struct urb *urb)
366 {
367         struct hci_dev *hdev = urb->context;
368         struct btusb_data *data = hdev->driver_data;
369         int i, err;
370
371         BT_DBG("%s urb %p status %d count %d", hdev->name,
372                                         urb, urb->status, urb->actual_length);
373
374         if (!test_bit(HCI_RUNNING, &hdev->flags))
375                 return;
376
377         if (urb->status == 0) {
378                 for (i = 0; i < urb->number_of_packets; i++) {
379                         unsigned int offset = urb->iso_frame_desc[i].offset;
380                         unsigned int length = urb->iso_frame_desc[i].actual_length;
381
382                         if (urb->iso_frame_desc[i].status)
383                                 continue;
384
385                         hdev->stat.byte_rx += length;
386
387                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
388                                                 urb->transfer_buffer + offset,
389                                                                 length) < 0) {
390                                 BT_ERR("%s corrupted SCO packet", hdev->name);
391                                 hdev->stat.err_rx++;
392                         }
393                 }
394         }
395
396         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
397                 return;
398
399         usb_anchor_urb(urb, &data->isoc_anchor);
400
401         err = usb_submit_urb(urb, GFP_ATOMIC);
402         if (err < 0) {
403                 BT_ERR("%s urb %p failed to resubmit (%d)",
404                                                 hdev->name, urb, -err);
405                 usb_unanchor_urb(urb);
406         }
407 }
408
409 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
410 {
411         int i, offset = 0;
412
413         BT_DBG("len %d mtu %d", len, mtu);
414
415         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
416                                         i++, offset += mtu, len -= mtu) {
417                 urb->iso_frame_desc[i].offset = offset;
418                 urb->iso_frame_desc[i].length = mtu;
419         }
420
421         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
422                 urb->iso_frame_desc[i].offset = offset;
423                 urb->iso_frame_desc[i].length = len;
424                 i++;
425         }
426
427         urb->number_of_packets = i;
428 }
429
430 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
431 {
432         struct btusb_data *data = hdev->driver_data;
433         struct urb *urb;
434         unsigned char *buf;
435         unsigned int pipe;
436         int err, size;
437
438         BT_DBG("%s", hdev->name);
439
440         if (!data->isoc_rx_ep)
441                 return -ENODEV;
442
443         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
444         if (!urb)
445                 return -ENOMEM;
446
447         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
448                                                 BTUSB_MAX_ISOC_FRAMES;
449
450         buf = kmalloc(size, mem_flags);
451         if (!buf) {
452                 usb_free_urb(urb);
453                 return -ENOMEM;
454         }
455
456         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
457
458         urb->dev      = data->udev;
459         urb->pipe     = pipe;
460         urb->context  = hdev;
461         urb->complete = btusb_isoc_complete;
462         urb->interval = data->isoc_rx_ep->bInterval;
463
464         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
465         urb->transfer_buffer = buf;
466         urb->transfer_buffer_length = size;
467
468         __fill_isoc_descriptor(urb, size,
469                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
470
471         usb_anchor_urb(urb, &data->isoc_anchor);
472
473         err = usb_submit_urb(urb, mem_flags);
474         if (err < 0) {
475                 BT_ERR("%s urb %p submission failed (%d)",
476                                                 hdev->name, urb, -err);
477                 usb_unanchor_urb(urb);
478         }
479
480         usb_free_urb(urb);
481
482         return err;
483 }
484
485 static void btusb_tx_complete(struct urb *urb)
486 {
487         struct sk_buff *skb = urb->context;
488         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
489         struct btusb_data *data = hdev->driver_data;
490
491         BT_DBG("%s urb %p status %d count %d", hdev->name,
492                                         urb, urb->status, urb->actual_length);
493
494         if (!test_bit(HCI_RUNNING, &hdev->flags))
495                 goto done;
496
497         if (!urb->status)
498                 hdev->stat.byte_tx += urb->transfer_buffer_length;
499         else
500                 hdev->stat.err_tx++;
501
502 done:
503         spin_lock(&data->txlock);
504         data->tx_in_flight--;
505         spin_unlock(&data->txlock);
506
507         kfree(urb->setup_packet);
508
509         kfree_skb(skb);
510 }
511
512 static void btusb_isoc_tx_complete(struct urb *urb)
513 {
514         struct sk_buff *skb = urb->context;
515         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
516
517         BT_DBG("%s urb %p status %d count %d", hdev->name,
518                                         urb, urb->status, urb->actual_length);
519
520         if (!test_bit(HCI_RUNNING, &hdev->flags))
521                 goto done;
522
523         if (!urb->status)
524                 hdev->stat.byte_tx += urb->transfer_buffer_length;
525         else
526                 hdev->stat.err_tx++;
527
528 done:
529         kfree(urb->setup_packet);
530
531         kfree_skb(skb);
532 }
533
534 static int btusb_open(struct hci_dev *hdev)
535 {
536         struct btusb_data *data = hdev->driver_data;
537         int err;
538
539         BT_DBG("%s", hdev->name);
540
541         err = usb_autopm_get_interface(data->intf);
542         if (err < 0)
543                 return err;
544
545         data->intf->needs_remote_wakeup = 1;
546
547         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
548                 goto done;
549
550         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
551                 goto done;
552
553         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
554         if (err < 0)
555                 goto failed;
556
557         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
558         if (err < 0) {
559                 usb_kill_anchored_urbs(&data->intr_anchor);
560                 goto failed;
561         }
562
563         set_bit(BTUSB_BULK_RUNNING, &data->flags);
564         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
565
566 done:
567         usb_autopm_put_interface(data->intf);
568         return 0;
569
570 failed:
571         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
572         clear_bit(HCI_RUNNING, &hdev->flags);
573         usb_autopm_put_interface(data->intf);
574         return err;
575 }
576
577 static void btusb_stop_traffic(struct btusb_data *data)
578 {
579         usb_kill_anchored_urbs(&data->intr_anchor);
580         usb_kill_anchored_urbs(&data->bulk_anchor);
581         usb_kill_anchored_urbs(&data->isoc_anchor);
582 }
583
584 static int btusb_close(struct hci_dev *hdev)
585 {
586         struct btusb_data *data = hdev->driver_data;
587         int err;
588
589         BT_DBG("%s", hdev->name);
590
591         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
592                 return 0;
593
594         cancel_work_sync(&data->work);
595         cancel_work_sync(&data->waker);
596
597         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
598         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
599         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
600
601         btusb_stop_traffic(data);
602         err = usb_autopm_get_interface(data->intf);
603         if (err < 0)
604                 goto failed;
605
606         data->intf->needs_remote_wakeup = 0;
607         usb_autopm_put_interface(data->intf);
608
609 failed:
610         usb_scuttle_anchored_urbs(&data->deferred);
611         return 0;
612 }
613
614 static int btusb_flush(struct hci_dev *hdev)
615 {
616         struct btusb_data *data = hdev->driver_data;
617
618         BT_DBG("%s", hdev->name);
619
620         usb_kill_anchored_urbs(&data->tx_anchor);
621
622         return 0;
623 }
624
625 static int btusb_send_frame(struct sk_buff *skb)
626 {
627         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
628         struct btusb_data *data = hdev->driver_data;
629         struct usb_ctrlrequest *dr;
630         struct urb *urb;
631         unsigned int pipe;
632         int err;
633
634         BT_DBG("%s", hdev->name);
635
636         if (!test_bit(HCI_RUNNING, &hdev->flags))
637                 return -EBUSY;
638
639         switch (bt_cb(skb)->pkt_type) {
640         case HCI_COMMAND_PKT:
641                 urb = usb_alloc_urb(0, GFP_ATOMIC);
642                 if (!urb)
643                         return -ENOMEM;
644
645                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
646                 if (!dr) {
647                         usb_free_urb(urb);
648                         return -ENOMEM;
649                 }
650
651                 dr->bRequestType = data->cmdreq_type;
652                 dr->bRequest     = 0;
653                 dr->wIndex       = 0;
654                 dr->wValue       = 0;
655                 dr->wLength      = __cpu_to_le16(skb->len);
656
657                 pipe = usb_sndctrlpipe(data->udev, 0x00);
658
659                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
660                                 skb->data, skb->len, btusb_tx_complete, skb);
661
662                 hdev->stat.cmd_tx++;
663                 break;
664
665         case HCI_ACLDATA_PKT:
666                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
667                         return -ENODEV;
668
669                 urb = usb_alloc_urb(0, GFP_ATOMIC);
670                 if (!urb)
671                         return -ENOMEM;
672
673                 pipe = usb_sndbulkpipe(data->udev,
674                                         data->bulk_tx_ep->bEndpointAddress);
675
676                 usb_fill_bulk_urb(urb, data->udev, pipe,
677                                 skb->data, skb->len, btusb_tx_complete, skb);
678
679                 hdev->stat.acl_tx++;
680                 break;
681
682         case HCI_SCODATA_PKT:
683                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
684                         return -ENODEV;
685
686                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
687                 if (!urb)
688                         return -ENOMEM;
689
690                 pipe = usb_sndisocpipe(data->udev,
691                                         data->isoc_tx_ep->bEndpointAddress);
692
693                 urb->dev      = data->udev;
694                 urb->pipe     = pipe;
695                 urb->context  = skb;
696                 urb->complete = btusb_isoc_tx_complete;
697                 urb->interval = data->isoc_tx_ep->bInterval;
698
699                 urb->transfer_flags  = URB_ISO_ASAP;
700                 urb->transfer_buffer = skb->data;
701                 urb->transfer_buffer_length = skb->len;
702
703                 __fill_isoc_descriptor(urb, skb->len,
704                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
705
706                 hdev->stat.sco_tx++;
707                 goto skip_waking;
708
709         default:
710                 return -EILSEQ;
711         }
712
713         err = inc_tx(data);
714         if (err) {
715                 usb_anchor_urb(urb, &data->deferred);
716                 schedule_work(&data->waker);
717                 err = 0;
718                 goto done;
719         }
720
721 skip_waking:
722         usb_anchor_urb(urb, &data->tx_anchor);
723
724         err = usb_submit_urb(urb, GFP_ATOMIC);
725         if (err < 0) {
726                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
727                 kfree(urb->setup_packet);
728                 usb_unanchor_urb(urb);
729         } else {
730                 usb_mark_last_busy(data->udev);
731         }
732
733         usb_free_urb(urb);
734
735 done:
736         return err;
737 }
738
739 static void btusb_destruct(struct hci_dev *hdev)
740 {
741         struct btusb_data *data = hdev->driver_data;
742
743         BT_DBG("%s", hdev->name);
744
745         kfree(data);
746 }
747
748 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
749 {
750         struct btusb_data *data = hdev->driver_data;
751
752         BT_DBG("%s evt %d", hdev->name, evt);
753
754         if (hdev->conn_hash.sco_num != data->sco_num) {
755                 data->sco_num = hdev->conn_hash.sco_num;
756                 schedule_work(&data->work);
757         }
758 }
759
760 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
761 {
762         struct btusb_data *data = hdev->driver_data;
763         struct usb_interface *intf = data->isoc;
764         struct usb_endpoint_descriptor *ep_desc;
765         int i, err;
766
767         if (!data->isoc)
768                 return -ENODEV;
769
770         err = usb_set_interface(data->udev, 1, altsetting);
771         if (err < 0) {
772                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
773                 return err;
774         }
775
776         data->isoc_altsetting = altsetting;
777
778         data->isoc_tx_ep = NULL;
779         data->isoc_rx_ep = NULL;
780
781         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
782                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
783
784                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
785                         data->isoc_tx_ep = ep_desc;
786                         continue;
787                 }
788
789                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
790                         data->isoc_rx_ep = ep_desc;
791                         continue;
792                 }
793         }
794
795         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
796                 BT_ERR("%s invalid SCO descriptors", hdev->name);
797                 return -ENODEV;
798         }
799
800         return 0;
801 }
802
803 static void btusb_work(struct work_struct *work)
804 {
805         struct btusb_data *data = container_of(work, struct btusb_data, work);
806         struct hci_dev *hdev = data->hdev;
807         int err;
808
809         if (hdev->conn_hash.sco_num > 0) {
810                 if (!data->did_iso_resume) {
811                         err = usb_autopm_get_interface(data->isoc);
812                         if (err < 0) {
813                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
814                                 usb_kill_anchored_urbs(&data->isoc_anchor);
815                                 return;
816                         }
817
818                         data->did_iso_resume = 1;
819                 }
820                 if (data->isoc_altsetting != 2) {
821                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
822                         usb_kill_anchored_urbs(&data->isoc_anchor);
823
824                         if (__set_isoc_interface(hdev, 2) < 0)
825                                 return;
826                 }
827
828                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
829                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
830                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
831                         else
832                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
833                 }
834         } else {
835                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
836                 usb_kill_anchored_urbs(&data->isoc_anchor);
837
838                 __set_isoc_interface(hdev, 0);
839                 if (data->did_iso_resume) {
840                         data->did_iso_resume = 0;
841                         usb_autopm_put_interface(data->isoc);
842                 }
843         }
844 }
845
846 static void btusb_waker(struct work_struct *work)
847 {
848         struct btusb_data *data = container_of(work, struct btusb_data, waker);
849         int err;
850
851         err = usb_autopm_get_interface(data->intf);
852         if (err < 0)
853                 return;
854
855         usb_autopm_put_interface(data->intf);
856 }
857
858 static int btusb_probe(struct usb_interface *intf,
859                                 const struct usb_device_id *id)
860 {
861         struct usb_endpoint_descriptor *ep_desc;
862         struct btusb_data *data;
863         struct hci_dev *hdev;
864         int i, err;
865
866         BT_DBG("intf %p id %p", intf, id);
867
868         /* interface numbers are hardcoded in the spec */
869         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
870                 return -ENODEV;
871
872         if (!id->driver_info) {
873                 const struct usb_device_id *match;
874                 match = usb_match_id(intf, blacklist_table);
875                 if (match)
876                         id = match;
877         }
878
879         if (id->driver_info == BTUSB_IGNORE)
880                 return -ENODEV;
881
882         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
883                 return -ENODEV;
884
885         if (ignore_csr && id->driver_info & BTUSB_CSR)
886                 return -ENODEV;
887
888         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
889                 return -ENODEV;
890
891         data = kzalloc(sizeof(*data), GFP_KERNEL);
892         if (!data)
893                 return -ENOMEM;
894
895         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
896                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
897
898                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
899                         data->intr_ep = ep_desc;
900                         continue;
901                 }
902
903                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
904                         data->bulk_tx_ep = ep_desc;
905                         continue;
906                 }
907
908                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
909                         data->bulk_rx_ep = ep_desc;
910                         continue;
911                 }
912         }
913
914         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
915                 kfree(data);
916                 return -ENODEV;
917         }
918
919         data->cmdreq_type = USB_TYPE_CLASS;
920
921         data->udev = interface_to_usbdev(intf);
922         data->intf = intf;
923
924         spin_lock_init(&data->lock);
925
926         INIT_WORK(&data->work, btusb_work);
927         INIT_WORK(&data->waker, btusb_waker);
928         spin_lock_init(&data->txlock);
929
930         init_usb_anchor(&data->tx_anchor);
931         init_usb_anchor(&data->intr_anchor);
932         init_usb_anchor(&data->bulk_anchor);
933         init_usb_anchor(&data->isoc_anchor);
934         init_usb_anchor(&data->deferred);
935
936         hdev = hci_alloc_dev();
937         if (!hdev) {
938                 kfree(data);
939                 return -ENOMEM;
940         }
941
942         hdev->bus = HCI_USB;
943         hdev->driver_data = data;
944
945         data->hdev = hdev;
946
947         SET_HCIDEV_DEV(hdev, &intf->dev);
948
949         hdev->open     = btusb_open;
950         hdev->close    = btusb_close;
951         hdev->flush    = btusb_flush;
952         hdev->send     = btusb_send_frame;
953         hdev->destruct = btusb_destruct;
954         hdev->notify   = btusb_notify;
955
956         hdev->owner = THIS_MODULE;
957
958         /* Interface numbers are hardcoded in the specification */
959         data->isoc = usb_ifnum_to_if(data->udev, 1);
960
961         if (!reset)
962                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
963
964         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
965                 if (!disable_scofix)
966                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
967         }
968
969         if (id->driver_info & BTUSB_BROKEN_ISOC)
970                 data->isoc = NULL;
971
972         if (id->driver_info & BTUSB_DIGIANSWER) {
973                 data->cmdreq_type = USB_TYPE_VENDOR;
974                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
975         }
976
977         if (id->driver_info & BTUSB_CSR) {
978                 struct usb_device *udev = data->udev;
979
980                 /* Old firmware would otherwise execute USB reset */
981                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
982                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
983         }
984
985         if (id->driver_info & BTUSB_SNIFFER) {
986                 struct usb_device *udev = data->udev;
987
988                 /* New sniffer firmware has crippled HCI interface */
989                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
990                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
991
992                 data->isoc = NULL;
993         }
994
995         if (id->driver_info & BTUSB_BCM92035) {
996                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
997                 struct sk_buff *skb;
998
999                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1000                 if (skb) {
1001                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1002                         skb_queue_tail(&hdev->driver_init, skb);
1003                 }
1004         }
1005
1006         if (data->isoc) {
1007                 err = usb_driver_claim_interface(&btusb_driver,
1008                                                         data->isoc, data);
1009                 if (err < 0) {
1010                         hci_free_dev(hdev);
1011                         kfree(data);
1012                         return err;
1013                 }
1014         }
1015
1016         err = hci_register_dev(hdev);
1017         if (err < 0) {
1018                 hci_free_dev(hdev);
1019                 kfree(data);
1020                 return err;
1021         }
1022
1023         usb_set_intfdata(intf, data);
1024
1025         return 0;
1026 }
1027
1028 static void btusb_disconnect(struct usb_interface *intf)
1029 {
1030         struct btusb_data *data = usb_get_intfdata(intf);
1031         struct hci_dev *hdev;
1032
1033         BT_DBG("intf %p", intf);
1034
1035         if (!data)
1036                 return;
1037
1038         hdev = data->hdev;
1039
1040         __hci_dev_hold(hdev);
1041
1042         usb_set_intfdata(data->intf, NULL);
1043
1044         if (data->isoc)
1045                 usb_set_intfdata(data->isoc, NULL);
1046
1047         hci_unregister_dev(hdev);
1048
1049         if (intf == data->isoc)
1050                 usb_driver_release_interface(&btusb_driver, data->intf);
1051         else if (data->isoc)
1052                 usb_driver_release_interface(&btusb_driver, data->isoc);
1053
1054         __hci_dev_put(hdev);
1055
1056         hci_free_dev(hdev);
1057 }
1058
1059 #ifdef CONFIG_PM
1060 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1061 {
1062         struct btusb_data *data = usb_get_intfdata(intf);
1063
1064         BT_DBG("intf %p", intf);
1065
1066         if (data->suspend_count++)
1067                 return 0;
1068
1069         spin_lock_irq(&data->txlock);
1070         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1071                 set_bit(BTUSB_SUSPENDING, &data->flags);
1072                 spin_unlock_irq(&data->txlock);
1073         } else {
1074                 spin_unlock_irq(&data->txlock);
1075                 data->suspend_count--;
1076                 return -EBUSY;
1077         }
1078
1079         cancel_work_sync(&data->work);
1080
1081         btusb_stop_traffic(data);
1082         usb_kill_anchored_urbs(&data->tx_anchor);
1083
1084         return 0;
1085 }
1086
1087 static void play_deferred(struct btusb_data *data)
1088 {
1089         struct urb *urb;
1090         int err;
1091
1092         while ((urb = usb_get_from_anchor(&data->deferred))) {
1093                 err = usb_submit_urb(urb, GFP_ATOMIC);
1094                 if (err < 0)
1095                         break;
1096
1097                 data->tx_in_flight++;
1098         }
1099         usb_scuttle_anchored_urbs(&data->deferred);
1100 }
1101
1102 static int btusb_resume(struct usb_interface *intf)
1103 {
1104         struct btusb_data *data = usb_get_intfdata(intf);
1105         struct hci_dev *hdev = data->hdev;
1106         int err = 0;
1107
1108         BT_DBG("intf %p", intf);
1109
1110         if (--data->suspend_count)
1111                 return 0;
1112
1113         if (!test_bit(HCI_RUNNING, &hdev->flags))
1114                 goto done;
1115
1116         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1117                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1118                 if (err < 0) {
1119                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1120                         goto failed;
1121                 }
1122         }
1123
1124         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1125                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1126                 if (err < 0) {
1127                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1128                         goto failed;
1129                 }
1130
1131                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1132         }
1133
1134         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1135                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1136                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1137                 else
1138                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1139         }
1140
1141         spin_lock_irq(&data->txlock);
1142         play_deferred(data);
1143         clear_bit(BTUSB_SUSPENDING, &data->flags);
1144         spin_unlock_irq(&data->txlock);
1145         schedule_work(&data->work);
1146
1147         return 0;
1148
1149 failed:
1150         usb_scuttle_anchored_urbs(&data->deferred);
1151 done:
1152         spin_lock_irq(&data->txlock);
1153         clear_bit(BTUSB_SUSPENDING, &data->flags);
1154         spin_unlock_irq(&data->txlock);
1155
1156         return err;
1157 }
1158 #endif
1159
1160 static struct usb_driver btusb_driver = {
1161         .name           = "btusb",
1162         .probe          = btusb_probe,
1163         .disconnect     = btusb_disconnect,
1164 #ifdef CONFIG_PM
1165         .suspend        = btusb_suspend,
1166         .resume         = btusb_resume,
1167 #endif
1168         .id_table       = btusb_table,
1169         .supports_autosuspend = 1,
1170 };
1171
1172 static int __init btusb_init(void)
1173 {
1174         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1175
1176         return usb_register(&btusb_driver);
1177 }
1178
1179 static void __exit btusb_exit(void)
1180 {
1181         usb_deregister(&btusb_driver);
1182 }
1183
1184 module_init(btusb_init);
1185 module_exit(btusb_exit);
1186
1187 module_param(ignore_dga, bool, 0644);
1188 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1189
1190 module_param(ignore_csr, bool, 0644);
1191 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1192
1193 module_param(ignore_sniffer, bool, 0644);
1194 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1195
1196 module_param(disable_scofix, bool, 0644);
1197 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1198
1199 module_param(force_scofix, bool, 0644);
1200 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1201
1202 module_param(reset, bool, 0644);
1203 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1204
1205 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1206 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1207 MODULE_VERSION(VERSION);
1208 MODULE_LICENSE("GPL");