Bluetooth: Fix log spamming in btusb due to autosuspend
[linux-2.6.git] / drivers / bluetooth / btusb.c
1 /*
2  *
3  *  Generic Bluetooth USB driver
4  *
5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
6  *
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License as published by
10  *  the Free Software Foundation; either version 2 of the License, or
11  *  (at your option) any later version.
12  *
13  *  This program is distributed in the hope that it will be useful,
14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  *  GNU General Public License for more details.
17  *
18  *  You should have received a copy of the GNU General Public License
19  *  along with this program; if not, write to the Free Software
20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21  *
22  */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #define VERSION "0.6"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE            0x01
51 #define BTUSB_DIGIANSWER        0x02
52 #define BTUSB_CSR               0x04
53 #define BTUSB_SNIFFER           0x08
54 #define BTUSB_BCM92035          0x10
55 #define BTUSB_BROKEN_ISOC       0x20
56 #define BTUSB_WRONG_SCO_MTU     0x40
57
58 static struct usb_device_id btusb_table[] = {
59         /* Generic Bluetooth USB device */
60         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
62         /* Apple MacBookPro 7,1 */
63         { USB_DEVICE(0x05ac, 0x8213) },
64
65         /* Apple iMac11,1 */
66         { USB_DEVICE(0x05ac, 0x8215) },
67
68         /* Apple MacBookPro6,2 */
69         { USB_DEVICE(0x05ac, 0x8218) },
70
71         /* Apple MacBookAir3,1, MacBookAir3,2 */
72         { USB_DEVICE(0x05ac, 0x821b) },
73
74         /* AVM BlueFRITZ! USB v2.0 */
75         { USB_DEVICE(0x057c, 0x3800) },
76
77         /* Bluetooth Ultraport Module from IBM */
78         { USB_DEVICE(0x04bf, 0x030a) },
79
80         /* ALPS Modules with non-standard id */
81         { USB_DEVICE(0x044e, 0x3001) },
82         { USB_DEVICE(0x044e, 0x3002) },
83
84         /* Ericsson with non-standard id */
85         { USB_DEVICE(0x0bdb, 0x1002) },
86
87         /* Canyon CN-BTU1 with HID interfaces */
88         { USB_DEVICE(0x0c10, 0x0000) },
89
90         { }     /* Terminating entry */
91 };
92
93 MODULE_DEVICE_TABLE(usb, btusb_table);
94
95 static struct usb_device_id blacklist_table[] = {
96         /* CSR BlueCore devices */
97         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
98
99         /* Broadcom BCM2033 without firmware */
100         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
101
102         /* Broadcom BCM2035 */
103         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
104         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
105         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
106
107         /* Broadcom BCM2045 */
108         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
109         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
110
111         /* IBM/Lenovo ThinkPad with Broadcom chip */
112         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
113         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
114
115         /* HP laptop with Broadcom chip */
116         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
117
118         /* Dell laptop with Broadcom chip */
119         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
120
121         /* Dell Wireless 370 and 410 devices */
122         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
123         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
124
125         /* Belkin F8T012 and F8T013 devices */
126         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
127         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
128
129         /* Asus WL-BTD202 device */
130         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
131
132         /* Kensington Bluetooth USB adapter */
133         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
134
135         /* RTX Telecom based adapters with buggy SCO support */
136         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
137         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
138
139         /* CONWISE Technology based adapters with buggy SCO support */
140         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
141
142         /* Digianswer devices */
143         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
144         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
145
146         /* CSR BlueCore Bluetooth Sniffer */
147         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
148
149         /* Frontline ComProbe Bluetooth Sniffer */
150         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
151
152         { }     /* Terminating entry */
153 };
154
155 #define BTUSB_MAX_ISOC_FRAMES   10
156
157 #define BTUSB_INTR_RUNNING      0
158 #define BTUSB_BULK_RUNNING      1
159 #define BTUSB_ISOC_RUNNING      2
160 #define BTUSB_SUSPENDING        3
161 #define BTUSB_DID_ISO_RESUME    4
162
163 struct btusb_data {
164         struct hci_dev       *hdev;
165         struct usb_device    *udev;
166         struct usb_interface *intf;
167         struct usb_interface *isoc;
168
169         spinlock_t lock;
170
171         unsigned long flags;
172
173         struct work_struct work;
174         struct work_struct waker;
175
176         struct usb_anchor tx_anchor;
177         struct usb_anchor intr_anchor;
178         struct usb_anchor bulk_anchor;
179         struct usb_anchor isoc_anchor;
180         struct usb_anchor deferred;
181         int tx_in_flight;
182         spinlock_t txlock;
183
184         struct usb_endpoint_descriptor *intr_ep;
185         struct usb_endpoint_descriptor *bulk_tx_ep;
186         struct usb_endpoint_descriptor *bulk_rx_ep;
187         struct usb_endpoint_descriptor *isoc_tx_ep;
188         struct usb_endpoint_descriptor *isoc_rx_ep;
189
190         __u8 cmdreq_type;
191
192         unsigned int sco_num;
193         int isoc_altsetting;
194         int suspend_count;
195 };
196
197 static int inc_tx(struct btusb_data *data)
198 {
199         unsigned long flags;
200         int rv;
201
202         spin_lock_irqsave(&data->txlock, flags);
203         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
204         if (!rv)
205                 data->tx_in_flight++;
206         spin_unlock_irqrestore(&data->txlock, flags);
207
208         return rv;
209 }
210
211 static void btusb_intr_complete(struct urb *urb)
212 {
213         struct hci_dev *hdev = urb->context;
214         struct btusb_data *data = hdev->driver_data;
215         int err;
216
217         BT_DBG("%s urb %p status %d count %d", hdev->name,
218                                         urb, urb->status, urb->actual_length);
219
220         if (!test_bit(HCI_RUNNING, &hdev->flags))
221                 return;
222
223         if (urb->status == 0) {
224                 hdev->stat.byte_rx += urb->actual_length;
225
226                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
227                                                 urb->transfer_buffer,
228                                                 urb->actual_length) < 0) {
229                         BT_ERR("%s corrupted event packet", hdev->name);
230                         hdev->stat.err_rx++;
231                 }
232         }
233
234         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
235                 return;
236
237         usb_mark_last_busy(data->udev);
238         usb_anchor_urb(urb, &data->intr_anchor);
239
240         err = usb_submit_urb(urb, GFP_ATOMIC);
241         if (err < 0) {
242                 if (err != -EPERM)
243                         BT_ERR("%s urb %p failed to resubmit (%d)",
244                                                 hdev->name, urb, -err);
245                 usb_unanchor_urb(urb);
246         }
247 }
248
249 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
250 {
251         struct btusb_data *data = hdev->driver_data;
252         struct urb *urb;
253         unsigned char *buf;
254         unsigned int pipe;
255         int err, size;
256
257         BT_DBG("%s", hdev->name);
258
259         if (!data->intr_ep)
260                 return -ENODEV;
261
262         urb = usb_alloc_urb(0, mem_flags);
263         if (!urb)
264                 return -ENOMEM;
265
266         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
267
268         buf = kmalloc(size, mem_flags);
269         if (!buf) {
270                 usb_free_urb(urb);
271                 return -ENOMEM;
272         }
273
274         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
275
276         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
277                                                 btusb_intr_complete, hdev,
278                                                 data->intr_ep->bInterval);
279
280         urb->transfer_flags |= URB_FREE_BUFFER;
281
282         usb_anchor_urb(urb, &data->intr_anchor);
283
284         err = usb_submit_urb(urb, mem_flags);
285         if (err < 0) {
286                 BT_ERR("%s urb %p submission failed (%d)",
287                                                 hdev->name, urb, -err);
288                 usb_unanchor_urb(urb);
289         }
290
291         usb_free_urb(urb);
292
293         return err;
294 }
295
296 static void btusb_bulk_complete(struct urb *urb)
297 {
298         struct hci_dev *hdev = urb->context;
299         struct btusb_data *data = hdev->driver_data;
300         int err;
301
302         BT_DBG("%s urb %p status %d count %d", hdev->name,
303                                         urb, urb->status, urb->actual_length);
304
305         if (!test_bit(HCI_RUNNING, &hdev->flags))
306                 return;
307
308         if (urb->status == 0) {
309                 hdev->stat.byte_rx += urb->actual_length;
310
311                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
312                                                 urb->transfer_buffer,
313                                                 urb->actual_length) < 0) {
314                         BT_ERR("%s corrupted ACL packet", hdev->name);
315                         hdev->stat.err_rx++;
316                 }
317         }
318
319         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
320                 return;
321
322         usb_anchor_urb(urb, &data->bulk_anchor);
323         usb_mark_last_busy(data->udev);
324
325         err = usb_submit_urb(urb, GFP_ATOMIC);
326         if (err < 0) {
327                 if (err != -EPERM)
328                         BT_ERR("%s urb %p failed to resubmit (%d)",
329                                                 hdev->name, urb, -err);
330                 usb_unanchor_urb(urb);
331         }
332 }
333
334 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
335 {
336         struct btusb_data *data = hdev->driver_data;
337         struct urb *urb;
338         unsigned char *buf;
339         unsigned int pipe;
340         int err, size = HCI_MAX_FRAME_SIZE;
341
342         BT_DBG("%s", hdev->name);
343
344         if (!data->bulk_rx_ep)
345                 return -ENODEV;
346
347         urb = usb_alloc_urb(0, mem_flags);
348         if (!urb)
349                 return -ENOMEM;
350
351         buf = kmalloc(size, mem_flags);
352         if (!buf) {
353                 usb_free_urb(urb);
354                 return -ENOMEM;
355         }
356
357         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
358
359         usb_fill_bulk_urb(urb, data->udev, pipe,
360                                         buf, size, btusb_bulk_complete, hdev);
361
362         urb->transfer_flags |= URB_FREE_BUFFER;
363
364         usb_mark_last_busy(data->udev);
365         usb_anchor_urb(urb, &data->bulk_anchor);
366
367         err = usb_submit_urb(urb, mem_flags);
368         if (err < 0) {
369                 BT_ERR("%s urb %p submission failed (%d)",
370                                                 hdev->name, urb, -err);
371                 usb_unanchor_urb(urb);
372         }
373
374         usb_free_urb(urb);
375
376         return err;
377 }
378
379 static void btusb_isoc_complete(struct urb *urb)
380 {
381         struct hci_dev *hdev = urb->context;
382         struct btusb_data *data = hdev->driver_data;
383         int i, err;
384
385         BT_DBG("%s urb %p status %d count %d", hdev->name,
386                                         urb, urb->status, urb->actual_length);
387
388         if (!test_bit(HCI_RUNNING, &hdev->flags))
389                 return;
390
391         if (urb->status == 0) {
392                 for (i = 0; i < urb->number_of_packets; i++) {
393                         unsigned int offset = urb->iso_frame_desc[i].offset;
394                         unsigned int length = urb->iso_frame_desc[i].actual_length;
395
396                         if (urb->iso_frame_desc[i].status)
397                                 continue;
398
399                         hdev->stat.byte_rx += length;
400
401                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
402                                                 urb->transfer_buffer + offset,
403                                                                 length) < 0) {
404                                 BT_ERR("%s corrupted SCO packet", hdev->name);
405                                 hdev->stat.err_rx++;
406                         }
407                 }
408         }
409
410         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
411                 return;
412
413         usb_anchor_urb(urb, &data->isoc_anchor);
414
415         err = usb_submit_urb(urb, GFP_ATOMIC);
416         if (err < 0) {
417                 if (err != -EPERM)
418                         BT_ERR("%s urb %p failed to resubmit (%d)",
419                                                 hdev->name, urb, -err);
420                 usb_unanchor_urb(urb);
421         }
422 }
423
424 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
425 {
426         int i, offset = 0;
427
428         BT_DBG("len %d mtu %d", len, mtu);
429
430         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
431                                         i++, offset += mtu, len -= mtu) {
432                 urb->iso_frame_desc[i].offset = offset;
433                 urb->iso_frame_desc[i].length = mtu;
434         }
435
436         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
437                 urb->iso_frame_desc[i].offset = offset;
438                 urb->iso_frame_desc[i].length = len;
439                 i++;
440         }
441
442         urb->number_of_packets = i;
443 }
444
445 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
446 {
447         struct btusb_data *data = hdev->driver_data;
448         struct urb *urb;
449         unsigned char *buf;
450         unsigned int pipe;
451         int err, size;
452
453         BT_DBG("%s", hdev->name);
454
455         if (!data->isoc_rx_ep)
456                 return -ENODEV;
457
458         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
459         if (!urb)
460                 return -ENOMEM;
461
462         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
463                                                 BTUSB_MAX_ISOC_FRAMES;
464
465         buf = kmalloc(size, mem_flags);
466         if (!buf) {
467                 usb_free_urb(urb);
468                 return -ENOMEM;
469         }
470
471         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
472
473         urb->dev      = data->udev;
474         urb->pipe     = pipe;
475         urb->context  = hdev;
476         urb->complete = btusb_isoc_complete;
477         urb->interval = data->isoc_rx_ep->bInterval;
478
479         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
480         urb->transfer_buffer = buf;
481         urb->transfer_buffer_length = size;
482
483         __fill_isoc_descriptor(urb, size,
484                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
485
486         usb_anchor_urb(urb, &data->isoc_anchor);
487
488         err = usb_submit_urb(urb, mem_flags);
489         if (err < 0) {
490                 BT_ERR("%s urb %p submission failed (%d)",
491                                                 hdev->name, urb, -err);
492                 usb_unanchor_urb(urb);
493         }
494
495         usb_free_urb(urb);
496
497         return err;
498 }
499
500 static void btusb_tx_complete(struct urb *urb)
501 {
502         struct sk_buff *skb = urb->context;
503         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
504         struct btusb_data *data = hdev->driver_data;
505
506         BT_DBG("%s urb %p status %d count %d", hdev->name,
507                                         urb, urb->status, urb->actual_length);
508
509         if (!test_bit(HCI_RUNNING, &hdev->flags))
510                 goto done;
511
512         if (!urb->status)
513                 hdev->stat.byte_tx += urb->transfer_buffer_length;
514         else
515                 hdev->stat.err_tx++;
516
517 done:
518         spin_lock(&data->txlock);
519         data->tx_in_flight--;
520         spin_unlock(&data->txlock);
521
522         kfree(urb->setup_packet);
523
524         kfree_skb(skb);
525 }
526
527 static void btusb_isoc_tx_complete(struct urb *urb)
528 {
529         struct sk_buff *skb = urb->context;
530         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
531
532         BT_DBG("%s urb %p status %d count %d", hdev->name,
533                                         urb, urb->status, urb->actual_length);
534
535         if (!test_bit(HCI_RUNNING, &hdev->flags))
536                 goto done;
537
538         if (!urb->status)
539                 hdev->stat.byte_tx += urb->transfer_buffer_length;
540         else
541                 hdev->stat.err_tx++;
542
543 done:
544         kfree(urb->setup_packet);
545
546         kfree_skb(skb);
547 }
548
549 static int btusb_open(struct hci_dev *hdev)
550 {
551         struct btusb_data *data = hdev->driver_data;
552         int err;
553
554         BT_DBG("%s", hdev->name);
555
556         err = usb_autopm_get_interface(data->intf);
557         if (err < 0)
558                 return err;
559
560         data->intf->needs_remote_wakeup = 1;
561
562         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
563                 goto done;
564
565         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
566                 goto done;
567
568         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
569         if (err < 0)
570                 goto failed;
571
572         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
573         if (err < 0) {
574                 usb_kill_anchored_urbs(&data->intr_anchor);
575                 goto failed;
576         }
577
578         set_bit(BTUSB_BULK_RUNNING, &data->flags);
579         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
580
581 done:
582         usb_autopm_put_interface(data->intf);
583         return 0;
584
585 failed:
586         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
587         clear_bit(HCI_RUNNING, &hdev->flags);
588         usb_autopm_put_interface(data->intf);
589         return err;
590 }
591
592 static void btusb_stop_traffic(struct btusb_data *data)
593 {
594         usb_kill_anchored_urbs(&data->intr_anchor);
595         usb_kill_anchored_urbs(&data->bulk_anchor);
596         usb_kill_anchored_urbs(&data->isoc_anchor);
597 }
598
599 static int btusb_close(struct hci_dev *hdev)
600 {
601         struct btusb_data *data = hdev->driver_data;
602         int err;
603
604         BT_DBG("%s", hdev->name);
605
606         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
607                 return 0;
608
609         cancel_work_sync(&data->work);
610         cancel_work_sync(&data->waker);
611
612         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
613         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
614         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
615
616         btusb_stop_traffic(data);
617         err = usb_autopm_get_interface(data->intf);
618         if (err < 0)
619                 goto failed;
620
621         data->intf->needs_remote_wakeup = 0;
622         usb_autopm_put_interface(data->intf);
623
624 failed:
625         usb_scuttle_anchored_urbs(&data->deferred);
626         return 0;
627 }
628
629 static int btusb_flush(struct hci_dev *hdev)
630 {
631         struct btusb_data *data = hdev->driver_data;
632
633         BT_DBG("%s", hdev->name);
634
635         usb_kill_anchored_urbs(&data->tx_anchor);
636
637         return 0;
638 }
639
640 static int btusb_send_frame(struct sk_buff *skb)
641 {
642         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
643         struct btusb_data *data = hdev->driver_data;
644         struct usb_ctrlrequest *dr;
645         struct urb *urb;
646         unsigned int pipe;
647         int err;
648
649         BT_DBG("%s", hdev->name);
650
651         if (!test_bit(HCI_RUNNING, &hdev->flags))
652                 return -EBUSY;
653
654         switch (bt_cb(skb)->pkt_type) {
655         case HCI_COMMAND_PKT:
656                 urb = usb_alloc_urb(0, GFP_ATOMIC);
657                 if (!urb)
658                         return -ENOMEM;
659
660                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
661                 if (!dr) {
662                         usb_free_urb(urb);
663                         return -ENOMEM;
664                 }
665
666                 dr->bRequestType = data->cmdreq_type;
667                 dr->bRequest     = 0;
668                 dr->wIndex       = 0;
669                 dr->wValue       = 0;
670                 dr->wLength      = __cpu_to_le16(skb->len);
671
672                 pipe = usb_sndctrlpipe(data->udev, 0x00);
673
674                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
675                                 skb->data, skb->len, btusb_tx_complete, skb);
676
677                 hdev->stat.cmd_tx++;
678                 break;
679
680         case HCI_ACLDATA_PKT:
681                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
682                         return -ENODEV;
683
684                 urb = usb_alloc_urb(0, GFP_ATOMIC);
685                 if (!urb)
686                         return -ENOMEM;
687
688                 pipe = usb_sndbulkpipe(data->udev,
689                                         data->bulk_tx_ep->bEndpointAddress);
690
691                 usb_fill_bulk_urb(urb, data->udev, pipe,
692                                 skb->data, skb->len, btusb_tx_complete, skb);
693
694                 hdev->stat.acl_tx++;
695                 break;
696
697         case HCI_SCODATA_PKT:
698                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
699                         return -ENODEV;
700
701                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
702                 if (!urb)
703                         return -ENOMEM;
704
705                 pipe = usb_sndisocpipe(data->udev,
706                                         data->isoc_tx_ep->bEndpointAddress);
707
708                 urb->dev      = data->udev;
709                 urb->pipe     = pipe;
710                 urb->context  = skb;
711                 urb->complete = btusb_isoc_tx_complete;
712                 urb->interval = data->isoc_tx_ep->bInterval;
713
714                 urb->transfer_flags  = URB_ISO_ASAP;
715                 urb->transfer_buffer = skb->data;
716                 urb->transfer_buffer_length = skb->len;
717
718                 __fill_isoc_descriptor(urb, skb->len,
719                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
720
721                 hdev->stat.sco_tx++;
722                 goto skip_waking;
723
724         default:
725                 return -EILSEQ;
726         }
727
728         err = inc_tx(data);
729         if (err) {
730                 usb_anchor_urb(urb, &data->deferred);
731                 schedule_work(&data->waker);
732                 err = 0;
733                 goto done;
734         }
735
736 skip_waking:
737         usb_anchor_urb(urb, &data->tx_anchor);
738
739         err = usb_submit_urb(urb, GFP_ATOMIC);
740         if (err < 0) {
741                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
742                 kfree(urb->setup_packet);
743                 usb_unanchor_urb(urb);
744         } else {
745                 usb_mark_last_busy(data->udev);
746         }
747
748         usb_free_urb(urb);
749
750 done:
751         return err;
752 }
753
754 static void btusb_destruct(struct hci_dev *hdev)
755 {
756         struct btusb_data *data = hdev->driver_data;
757
758         BT_DBG("%s", hdev->name);
759
760         kfree(data);
761 }
762
763 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
764 {
765         struct btusb_data *data = hdev->driver_data;
766
767         BT_DBG("%s evt %d", hdev->name, evt);
768
769         if (hdev->conn_hash.sco_num != data->sco_num) {
770                 data->sco_num = hdev->conn_hash.sco_num;
771                 schedule_work(&data->work);
772         }
773 }
774
775 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
776 {
777         struct btusb_data *data = hdev->driver_data;
778         struct usb_interface *intf = data->isoc;
779         struct usb_endpoint_descriptor *ep_desc;
780         int i, err;
781
782         if (!data->isoc)
783                 return -ENODEV;
784
785         err = usb_set_interface(data->udev, 1, altsetting);
786         if (err < 0) {
787                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
788                 return err;
789         }
790
791         data->isoc_altsetting = altsetting;
792
793         data->isoc_tx_ep = NULL;
794         data->isoc_rx_ep = NULL;
795
796         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
797                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
798
799                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
800                         data->isoc_tx_ep = ep_desc;
801                         continue;
802                 }
803
804                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
805                         data->isoc_rx_ep = ep_desc;
806                         continue;
807                 }
808         }
809
810         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
811                 BT_ERR("%s invalid SCO descriptors", hdev->name);
812                 return -ENODEV;
813         }
814
815         return 0;
816 }
817
818 static void btusb_work(struct work_struct *work)
819 {
820         struct btusb_data *data = container_of(work, struct btusb_data, work);
821         struct hci_dev *hdev = data->hdev;
822         int err;
823
824         if (hdev->conn_hash.sco_num > 0) {
825                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
826                         err = usb_autopm_get_interface(data->isoc);
827                         if (err < 0) {
828                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
829                                 usb_kill_anchored_urbs(&data->isoc_anchor);
830                                 return;
831                         }
832
833                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
834                 }
835                 if (data->isoc_altsetting != 2) {
836                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
837                         usb_kill_anchored_urbs(&data->isoc_anchor);
838
839                         if (__set_isoc_interface(hdev, 2) < 0)
840                                 return;
841                 }
842
843                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
844                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
845                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
846                         else
847                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
848                 }
849         } else {
850                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
851                 usb_kill_anchored_urbs(&data->isoc_anchor);
852
853                 __set_isoc_interface(hdev, 0);
854                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
855                         usb_autopm_put_interface(data->isoc);
856         }
857 }
858
859 static void btusb_waker(struct work_struct *work)
860 {
861         struct btusb_data *data = container_of(work, struct btusb_data, waker);
862         int err;
863
864         err = usb_autopm_get_interface(data->intf);
865         if (err < 0)
866                 return;
867
868         usb_autopm_put_interface(data->intf);
869 }
870
871 static int btusb_probe(struct usb_interface *intf,
872                                 const struct usb_device_id *id)
873 {
874         struct usb_endpoint_descriptor *ep_desc;
875         struct btusb_data *data;
876         struct hci_dev *hdev;
877         int i, err;
878
879         BT_DBG("intf %p id %p", intf, id);
880
881         /* interface numbers are hardcoded in the spec */
882         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
883                 return -ENODEV;
884
885         if (!id->driver_info) {
886                 const struct usb_device_id *match;
887                 match = usb_match_id(intf, blacklist_table);
888                 if (match)
889                         id = match;
890         }
891
892         if (id->driver_info == BTUSB_IGNORE)
893                 return -ENODEV;
894
895         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
896                 return -ENODEV;
897
898         if (ignore_csr && id->driver_info & BTUSB_CSR)
899                 return -ENODEV;
900
901         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
902                 return -ENODEV;
903
904         data = kzalloc(sizeof(*data), GFP_KERNEL);
905         if (!data)
906                 return -ENOMEM;
907
908         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
909                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
910
911                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
912                         data->intr_ep = ep_desc;
913                         continue;
914                 }
915
916                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
917                         data->bulk_tx_ep = ep_desc;
918                         continue;
919                 }
920
921                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
922                         data->bulk_rx_ep = ep_desc;
923                         continue;
924                 }
925         }
926
927         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
928                 kfree(data);
929                 return -ENODEV;
930         }
931
932         data->cmdreq_type = USB_TYPE_CLASS;
933
934         data->udev = interface_to_usbdev(intf);
935         data->intf = intf;
936
937         spin_lock_init(&data->lock);
938
939         INIT_WORK(&data->work, btusb_work);
940         INIT_WORK(&data->waker, btusb_waker);
941         spin_lock_init(&data->txlock);
942
943         init_usb_anchor(&data->tx_anchor);
944         init_usb_anchor(&data->intr_anchor);
945         init_usb_anchor(&data->bulk_anchor);
946         init_usb_anchor(&data->isoc_anchor);
947         init_usb_anchor(&data->deferred);
948
949         hdev = hci_alloc_dev();
950         if (!hdev) {
951                 kfree(data);
952                 return -ENOMEM;
953         }
954
955         hdev->bus = HCI_USB;
956         hdev->driver_data = data;
957
958         data->hdev = hdev;
959
960         SET_HCIDEV_DEV(hdev, &intf->dev);
961
962         hdev->open     = btusb_open;
963         hdev->close    = btusb_close;
964         hdev->flush    = btusb_flush;
965         hdev->send     = btusb_send_frame;
966         hdev->destruct = btusb_destruct;
967         hdev->notify   = btusb_notify;
968
969         hdev->owner = THIS_MODULE;
970
971         /* Interface numbers are hardcoded in the specification */
972         data->isoc = usb_ifnum_to_if(data->udev, 1);
973
974         if (!reset)
975                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
976
977         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
978                 if (!disable_scofix)
979                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
980         }
981
982         if (id->driver_info & BTUSB_BROKEN_ISOC)
983                 data->isoc = NULL;
984
985         if (id->driver_info & BTUSB_DIGIANSWER) {
986                 data->cmdreq_type = USB_TYPE_VENDOR;
987                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
988         }
989
990         if (id->driver_info & BTUSB_CSR) {
991                 struct usb_device *udev = data->udev;
992
993                 /* Old firmware would otherwise execute USB reset */
994                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
995                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
996         }
997
998         if (id->driver_info & BTUSB_SNIFFER) {
999                 struct usb_device *udev = data->udev;
1000
1001                 /* New sniffer firmware has crippled HCI interface */
1002                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1003                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1004
1005                 data->isoc = NULL;
1006         }
1007
1008         if (id->driver_info & BTUSB_BCM92035) {
1009                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1010                 struct sk_buff *skb;
1011
1012                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1013                 if (skb) {
1014                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1015                         skb_queue_tail(&hdev->driver_init, skb);
1016                 }
1017         }
1018
1019         if (data->isoc) {
1020                 err = usb_driver_claim_interface(&btusb_driver,
1021                                                         data->isoc, data);
1022                 if (err < 0) {
1023                         hci_free_dev(hdev);
1024                         kfree(data);
1025                         return err;
1026                 }
1027         }
1028
1029         err = hci_register_dev(hdev);
1030         if (err < 0) {
1031                 hci_free_dev(hdev);
1032                 kfree(data);
1033                 return err;
1034         }
1035
1036         usb_set_intfdata(intf, data);
1037
1038         usb_enable_autosuspend(interface_to_usbdev(intf));
1039
1040         return 0;
1041 }
1042
1043 static void btusb_disconnect(struct usb_interface *intf)
1044 {
1045         struct btusb_data *data = usb_get_intfdata(intf);
1046         struct hci_dev *hdev;
1047
1048         BT_DBG("intf %p", intf);
1049
1050         if (!data)
1051                 return;
1052
1053         hdev = data->hdev;
1054
1055         __hci_dev_hold(hdev);
1056
1057         usb_set_intfdata(data->intf, NULL);
1058
1059         if (data->isoc)
1060                 usb_set_intfdata(data->isoc, NULL);
1061
1062         hci_unregister_dev(hdev);
1063
1064         if (intf == data->isoc)
1065                 usb_driver_release_interface(&btusb_driver, data->intf);
1066         else if (data->isoc)
1067                 usb_driver_release_interface(&btusb_driver, data->isoc);
1068
1069         __hci_dev_put(hdev);
1070
1071         hci_free_dev(hdev);
1072 }
1073
1074 #ifdef CONFIG_PM
1075 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1076 {
1077         struct btusb_data *data = usb_get_intfdata(intf);
1078
1079         BT_DBG("intf %p", intf);
1080
1081         if (data->suspend_count++)
1082                 return 0;
1083
1084         spin_lock_irq(&data->txlock);
1085         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1086                 set_bit(BTUSB_SUSPENDING, &data->flags);
1087                 spin_unlock_irq(&data->txlock);
1088         } else {
1089                 spin_unlock_irq(&data->txlock);
1090                 data->suspend_count--;
1091                 return -EBUSY;
1092         }
1093
1094         cancel_work_sync(&data->work);
1095
1096         btusb_stop_traffic(data);
1097         usb_kill_anchored_urbs(&data->tx_anchor);
1098
1099         return 0;
1100 }
1101
1102 static void play_deferred(struct btusb_data *data)
1103 {
1104         struct urb *urb;
1105         int err;
1106
1107         while ((urb = usb_get_from_anchor(&data->deferred))) {
1108                 err = usb_submit_urb(urb, GFP_ATOMIC);
1109                 if (err < 0)
1110                         break;
1111
1112                 data->tx_in_flight++;
1113         }
1114         usb_scuttle_anchored_urbs(&data->deferred);
1115 }
1116
1117 static int btusb_resume(struct usb_interface *intf)
1118 {
1119         struct btusb_data *data = usb_get_intfdata(intf);
1120         struct hci_dev *hdev = data->hdev;
1121         int err = 0;
1122
1123         BT_DBG("intf %p", intf);
1124
1125         if (--data->suspend_count)
1126                 return 0;
1127
1128         if (!test_bit(HCI_RUNNING, &hdev->flags))
1129                 goto done;
1130
1131         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1132                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1133                 if (err < 0) {
1134                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1135                         goto failed;
1136                 }
1137         }
1138
1139         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1140                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1141                 if (err < 0) {
1142                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1143                         goto failed;
1144                 }
1145
1146                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1147         }
1148
1149         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1150                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1151                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1152                 else
1153                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1154         }
1155
1156         spin_lock_irq(&data->txlock);
1157         play_deferred(data);
1158         clear_bit(BTUSB_SUSPENDING, &data->flags);
1159         spin_unlock_irq(&data->txlock);
1160         schedule_work(&data->work);
1161
1162         return 0;
1163
1164 failed:
1165         usb_scuttle_anchored_urbs(&data->deferred);
1166 done:
1167         spin_lock_irq(&data->txlock);
1168         clear_bit(BTUSB_SUSPENDING, &data->flags);
1169         spin_unlock_irq(&data->txlock);
1170
1171         return err;
1172 }
1173 #endif
1174
1175 static struct usb_driver btusb_driver = {
1176         .name           = "btusb",
1177         .probe          = btusb_probe,
1178         .disconnect     = btusb_disconnect,
1179 #ifdef CONFIG_PM
1180         .suspend        = btusb_suspend,
1181         .resume         = btusb_resume,
1182 #endif
1183         .id_table       = btusb_table,
1184         .supports_autosuspend = 1,
1185 };
1186
1187 static int __init btusb_init(void)
1188 {
1189         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1190
1191         return usb_register(&btusb_driver);
1192 }
1193
1194 static void __exit btusb_exit(void)
1195 {
1196         usb_deregister(&btusb_driver);
1197 }
1198
1199 module_init(btusb_init);
1200 module_exit(btusb_exit);
1201
1202 module_param(ignore_dga, bool, 0644);
1203 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1204
1205 module_param(ignore_csr, bool, 0644);
1206 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1207
1208 module_param(ignore_sniffer, bool, 0644);
1209 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1210
1211 module_param(disable_scofix, bool, 0644);
1212 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1213
1214 module_param(force_scofix, bool, 0644);
1215 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1216
1217 module_param(reset, bool, 0644);
1218 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1219
1220 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1221 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1222 MODULE_VERSION(VERSION);
1223 MODULE_LICENSE("GPL");