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[karo-tx-linux.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 #define BTUSB_ATH3012           0x80
58
59 static struct usb_device_id btusb_table[] = {
60         /* Generic Bluetooth USB device */
61         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
62
63         /* Broadcom SoftSailing reporting vendor specific */
64         { USB_DEVICE(0x0a5c, 0x21e1) },
65
66         /* Apple MacBookPro 7,1 */
67         { USB_DEVICE(0x05ac, 0x8213) },
68
69         /* Apple iMac11,1 */
70         { USB_DEVICE(0x05ac, 0x8215) },
71
72         /* Apple MacBookPro6,2 */
73         { USB_DEVICE(0x05ac, 0x8218) },
74
75         /* Apple MacBookAir3,1, MacBookAir3,2 */
76         { USB_DEVICE(0x05ac, 0x821b) },
77
78         /* Apple MacBookAir4,1 */
79         { USB_DEVICE(0x05ac, 0x821f) },
80
81         /* Apple MacBookPro8,2 */
82         { USB_DEVICE(0x05ac, 0x821a) },
83
84         /* Apple MacMini5,1 */
85         { USB_DEVICE(0x05ac, 0x8281) },
86
87         /* AVM BlueFRITZ! USB v2.0 */
88         { USB_DEVICE(0x057c, 0x3800) },
89
90         /* Bluetooth Ultraport Module from IBM */
91         { USB_DEVICE(0x04bf, 0x030a) },
92
93         /* ALPS Modules with non-standard id */
94         { USB_DEVICE(0x044e, 0x3001) },
95         { USB_DEVICE(0x044e, 0x3002) },
96
97         /* Ericsson with non-standard id */
98         { USB_DEVICE(0x0bdb, 0x1002) },
99
100         /* Canyon CN-BTU1 with HID interfaces */
101         { USB_DEVICE(0x0c10, 0x0000) },
102
103         /* Broadcom BCM20702A0 */
104         { USB_DEVICE(0x0489, 0xe042) },
105         { USB_DEVICE(0x0a5c, 0x21e3) },
106         { USB_DEVICE(0x0a5c, 0x21e6) },
107         { USB_DEVICE(0x0a5c, 0x21e8) },
108         { USB_DEVICE(0x0a5c, 0x21f3) },
109         { USB_DEVICE(0x413c, 0x8197) },
110
111         /* Foxconn - Hon Hai */
112         { USB_DEVICE(0x0489, 0xe033) },
113
114         { }     /* Terminating entry */
115 };
116
117 MODULE_DEVICE_TABLE(usb, btusb_table);
118
119 static struct usb_device_id blacklist_table[] = {
120         /* CSR BlueCore devices */
121         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
122
123         /* Broadcom BCM2033 without firmware */
124         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
125
126         /* Atheros 3011 with sflash firmware */
127         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
128         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
129         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
130         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
131
132         /* Atheros AR9285 Malbec with sflash firmware */
133         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
134
135         /* Atheros 3012 with sflash firmware */
136         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
137         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
138         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
139         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
140
141         /* Atheros AR5BBU12 with sflash firmware */
142         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
143
144         /* Broadcom BCM2035 */
145         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
146         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
147         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
148
149         /* Broadcom BCM2045 */
150         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
151         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
152
153         /* IBM/Lenovo ThinkPad with Broadcom chip */
154         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
155         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
156
157         /* HP laptop with Broadcom chip */
158         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
159
160         /* Dell laptop with Broadcom chip */
161         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
162
163         /* Dell Wireless 370 and 410 devices */
164         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
165         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
166
167         /* Belkin F8T012 and F8T013 devices */
168         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
169         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
170
171         /* Asus WL-BTD202 device */
172         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
173
174         /* Kensington Bluetooth USB adapter */
175         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
176
177         /* RTX Telecom based adapters with buggy SCO support */
178         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
179         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
180
181         /* CONWISE Technology based adapters with buggy SCO support */
182         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
183
184         /* Digianswer devices */
185         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
186         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
187
188         /* CSR BlueCore Bluetooth Sniffer */
189         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
190
191         /* Frontline ComProbe Bluetooth Sniffer */
192         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
193
194         { }     /* Terminating entry */
195 };
196
197 #define BTUSB_MAX_ISOC_FRAMES   10
198
199 #define BTUSB_INTR_RUNNING      0
200 #define BTUSB_BULK_RUNNING      1
201 #define BTUSB_ISOC_RUNNING      2
202 #define BTUSB_SUSPENDING        3
203 #define BTUSB_DID_ISO_RESUME    4
204
205 struct btusb_data {
206         struct hci_dev       *hdev;
207         struct usb_device    *udev;
208         struct usb_interface *intf;
209         struct usb_interface *isoc;
210
211         spinlock_t lock;
212
213         unsigned long flags;
214
215         struct work_struct work;
216         struct work_struct waker;
217
218         struct usb_anchor tx_anchor;
219         struct usb_anchor intr_anchor;
220         struct usb_anchor bulk_anchor;
221         struct usb_anchor isoc_anchor;
222         struct usb_anchor deferred;
223         int tx_in_flight;
224         spinlock_t txlock;
225
226         struct usb_endpoint_descriptor *intr_ep;
227         struct usb_endpoint_descriptor *bulk_tx_ep;
228         struct usb_endpoint_descriptor *bulk_rx_ep;
229         struct usb_endpoint_descriptor *isoc_tx_ep;
230         struct usb_endpoint_descriptor *isoc_rx_ep;
231
232         __u8 cmdreq_type;
233
234         unsigned int sco_num;
235         int isoc_altsetting;
236         int suspend_count;
237 };
238
239 static int inc_tx(struct btusb_data *data)
240 {
241         unsigned long flags;
242         int rv;
243
244         spin_lock_irqsave(&data->txlock, flags);
245         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
246         if (!rv)
247                 data->tx_in_flight++;
248         spin_unlock_irqrestore(&data->txlock, flags);
249
250         return rv;
251 }
252
253 static void btusb_intr_complete(struct urb *urb)
254 {
255         struct hci_dev *hdev = urb->context;
256         struct btusb_data *data = hdev->driver_data;
257         int err;
258
259         BT_DBG("%s urb %p status %d count %d", hdev->name,
260                                         urb, urb->status, urb->actual_length);
261
262         if (!test_bit(HCI_RUNNING, &hdev->flags))
263                 return;
264
265         if (urb->status == 0) {
266                 hdev->stat.byte_rx += urb->actual_length;
267
268                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
269                                                 urb->transfer_buffer,
270                                                 urb->actual_length) < 0) {
271                         BT_ERR("%s corrupted event packet", hdev->name);
272                         hdev->stat.err_rx++;
273                 }
274         }
275
276         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
277                 return;
278
279         usb_mark_last_busy(data->udev);
280         usb_anchor_urb(urb, &data->intr_anchor);
281
282         err = usb_submit_urb(urb, GFP_ATOMIC);
283         if (err < 0) {
284                 if (err != -EPERM)
285                         BT_ERR("%s urb %p failed to resubmit (%d)",
286                                                 hdev->name, urb, -err);
287                 usb_unanchor_urb(urb);
288         }
289 }
290
291 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
292 {
293         struct btusb_data *data = hdev->driver_data;
294         struct urb *urb;
295         unsigned char *buf;
296         unsigned int pipe;
297         int err, size;
298
299         BT_DBG("%s", hdev->name);
300
301         if (!data->intr_ep)
302                 return -ENODEV;
303
304         urb = usb_alloc_urb(0, mem_flags);
305         if (!urb)
306                 return -ENOMEM;
307
308         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
309
310         buf = kmalloc(size, mem_flags);
311         if (!buf) {
312                 usb_free_urb(urb);
313                 return -ENOMEM;
314         }
315
316         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
317
318         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
319                                                 btusb_intr_complete, hdev,
320                                                 data->intr_ep->bInterval);
321
322         urb->transfer_flags |= URB_FREE_BUFFER;
323
324         usb_anchor_urb(urb, &data->intr_anchor);
325
326         err = usb_submit_urb(urb, mem_flags);
327         if (err < 0) {
328                 BT_ERR("%s urb %p submission failed (%d)",
329                                                 hdev->name, urb, -err);
330                 usb_unanchor_urb(urb);
331         }
332
333         usb_free_urb(urb);
334
335         return err;
336 }
337
338 static void btusb_bulk_complete(struct urb *urb)
339 {
340         struct hci_dev *hdev = urb->context;
341         struct btusb_data *data = hdev->driver_data;
342         int err;
343
344         BT_DBG("%s urb %p status %d count %d", hdev->name,
345                                         urb, urb->status, urb->actual_length);
346
347         if (!test_bit(HCI_RUNNING, &hdev->flags))
348                 return;
349
350         if (urb->status == 0) {
351                 hdev->stat.byte_rx += urb->actual_length;
352
353                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
354                                                 urb->transfer_buffer,
355                                                 urb->actual_length) < 0) {
356                         BT_ERR("%s corrupted ACL packet", hdev->name);
357                         hdev->stat.err_rx++;
358                 }
359         }
360
361         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
362                 return;
363
364         usb_anchor_urb(urb, &data->bulk_anchor);
365         usb_mark_last_busy(data->udev);
366
367         err = usb_submit_urb(urb, GFP_ATOMIC);
368         if (err < 0) {
369                 if (err != -EPERM)
370                         BT_ERR("%s urb %p failed to resubmit (%d)",
371                                                 hdev->name, urb, -err);
372                 usb_unanchor_urb(urb);
373         }
374 }
375
376 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
377 {
378         struct btusb_data *data = hdev->driver_data;
379         struct urb *urb;
380         unsigned char *buf;
381         unsigned int pipe;
382         int err, size = HCI_MAX_FRAME_SIZE;
383
384         BT_DBG("%s", hdev->name);
385
386         if (!data->bulk_rx_ep)
387                 return -ENODEV;
388
389         urb = usb_alloc_urb(0, mem_flags);
390         if (!urb)
391                 return -ENOMEM;
392
393         buf = kmalloc(size, mem_flags);
394         if (!buf) {
395                 usb_free_urb(urb);
396                 return -ENOMEM;
397         }
398
399         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
400
401         usb_fill_bulk_urb(urb, data->udev, pipe,
402                                         buf, size, btusb_bulk_complete, hdev);
403
404         urb->transfer_flags |= URB_FREE_BUFFER;
405
406         usb_mark_last_busy(data->udev);
407         usb_anchor_urb(urb, &data->bulk_anchor);
408
409         err = usb_submit_urb(urb, mem_flags);
410         if (err < 0) {
411                 BT_ERR("%s urb %p submission failed (%d)",
412                                                 hdev->name, urb, -err);
413                 usb_unanchor_urb(urb);
414         }
415
416         usb_free_urb(urb);
417
418         return err;
419 }
420
421 static void btusb_isoc_complete(struct urb *urb)
422 {
423         struct hci_dev *hdev = urb->context;
424         struct btusb_data *data = hdev->driver_data;
425         int i, err;
426
427         BT_DBG("%s urb %p status %d count %d", hdev->name,
428                                         urb, urb->status, urb->actual_length);
429
430         if (!test_bit(HCI_RUNNING, &hdev->flags))
431                 return;
432
433         if (urb->status == 0) {
434                 for (i = 0; i < urb->number_of_packets; i++) {
435                         unsigned int offset = urb->iso_frame_desc[i].offset;
436                         unsigned int length = urb->iso_frame_desc[i].actual_length;
437
438                         if (urb->iso_frame_desc[i].status)
439                                 continue;
440
441                         hdev->stat.byte_rx += length;
442
443                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
444                                                 urb->transfer_buffer + offset,
445                                                                 length) < 0) {
446                                 BT_ERR("%s corrupted SCO packet", hdev->name);
447                                 hdev->stat.err_rx++;
448                         }
449                 }
450         }
451
452         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
453                 return;
454
455         usb_anchor_urb(urb, &data->isoc_anchor);
456
457         err = usb_submit_urb(urb, GFP_ATOMIC);
458         if (err < 0) {
459                 if (err != -EPERM)
460                         BT_ERR("%s urb %p failed to resubmit (%d)",
461                                                 hdev->name, urb, -err);
462                 usb_unanchor_urb(urb);
463         }
464 }
465
466 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
467 {
468         int i, offset = 0;
469
470         BT_DBG("len %d mtu %d", len, mtu);
471
472         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
473                                         i++, offset += mtu, len -= mtu) {
474                 urb->iso_frame_desc[i].offset = offset;
475                 urb->iso_frame_desc[i].length = mtu;
476         }
477
478         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
479                 urb->iso_frame_desc[i].offset = offset;
480                 urb->iso_frame_desc[i].length = len;
481                 i++;
482         }
483
484         urb->number_of_packets = i;
485 }
486
487 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
488 {
489         struct btusb_data *data = hdev->driver_data;
490         struct urb *urb;
491         unsigned char *buf;
492         unsigned int pipe;
493         int err, size;
494
495         BT_DBG("%s", hdev->name);
496
497         if (!data->isoc_rx_ep)
498                 return -ENODEV;
499
500         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
501         if (!urb)
502                 return -ENOMEM;
503
504         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
505                                                 BTUSB_MAX_ISOC_FRAMES;
506
507         buf = kmalloc(size, mem_flags);
508         if (!buf) {
509                 usb_free_urb(urb);
510                 return -ENOMEM;
511         }
512
513         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
514
515         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
516                                 hdev, data->isoc_rx_ep->bInterval);
517
518         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
519
520         __fill_isoc_descriptor(urb, size,
521                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
522
523         usb_anchor_urb(urb, &data->isoc_anchor);
524
525         err = usb_submit_urb(urb, mem_flags);
526         if (err < 0) {
527                 BT_ERR("%s urb %p submission failed (%d)",
528                                                 hdev->name, urb, -err);
529                 usb_unanchor_urb(urb);
530         }
531
532         usb_free_urb(urb);
533
534         return err;
535 }
536
537 static void btusb_tx_complete(struct urb *urb)
538 {
539         struct sk_buff *skb = urb->context;
540         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
541         struct btusb_data *data = hdev->driver_data;
542
543         BT_DBG("%s urb %p status %d count %d", hdev->name,
544                                         urb, urb->status, urb->actual_length);
545
546         if (!test_bit(HCI_RUNNING, &hdev->flags))
547                 goto done;
548
549         if (!urb->status)
550                 hdev->stat.byte_tx += urb->transfer_buffer_length;
551         else
552                 hdev->stat.err_tx++;
553
554 done:
555         spin_lock(&data->txlock);
556         data->tx_in_flight--;
557         spin_unlock(&data->txlock);
558
559         kfree(urb->setup_packet);
560
561         kfree_skb(skb);
562 }
563
564 static void btusb_isoc_tx_complete(struct urb *urb)
565 {
566         struct sk_buff *skb = urb->context;
567         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
568
569         BT_DBG("%s urb %p status %d count %d", hdev->name,
570                                         urb, urb->status, urb->actual_length);
571
572         if (!test_bit(HCI_RUNNING, &hdev->flags))
573                 goto done;
574
575         if (!urb->status)
576                 hdev->stat.byte_tx += urb->transfer_buffer_length;
577         else
578                 hdev->stat.err_tx++;
579
580 done:
581         kfree(urb->setup_packet);
582
583         kfree_skb(skb);
584 }
585
586 static int btusb_open(struct hci_dev *hdev)
587 {
588         struct btusb_data *data = hdev->driver_data;
589         int err;
590
591         BT_DBG("%s", hdev->name);
592
593         err = usb_autopm_get_interface(data->intf);
594         if (err < 0)
595                 return err;
596
597         data->intf->needs_remote_wakeup = 1;
598
599         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
600                 goto done;
601
602         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
603                 goto done;
604
605         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
606         if (err < 0)
607                 goto failed;
608
609         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
610         if (err < 0) {
611                 usb_kill_anchored_urbs(&data->intr_anchor);
612                 goto failed;
613         }
614
615         set_bit(BTUSB_BULK_RUNNING, &data->flags);
616         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
617
618 done:
619         usb_autopm_put_interface(data->intf);
620         return 0;
621
622 failed:
623         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
624         clear_bit(HCI_RUNNING, &hdev->flags);
625         usb_autopm_put_interface(data->intf);
626         return err;
627 }
628
629 static void btusb_stop_traffic(struct btusb_data *data)
630 {
631         usb_kill_anchored_urbs(&data->intr_anchor);
632         usb_kill_anchored_urbs(&data->bulk_anchor);
633         usb_kill_anchored_urbs(&data->isoc_anchor);
634 }
635
636 static int btusb_close(struct hci_dev *hdev)
637 {
638         struct btusb_data *data = hdev->driver_data;
639         int err;
640
641         BT_DBG("%s", hdev->name);
642
643         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
644                 return 0;
645
646         cancel_work_sync(&data->work);
647         cancel_work_sync(&data->waker);
648
649         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
650         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
651         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
652
653         btusb_stop_traffic(data);
654         err = usb_autopm_get_interface(data->intf);
655         if (err < 0)
656                 goto failed;
657
658         data->intf->needs_remote_wakeup = 0;
659         usb_autopm_put_interface(data->intf);
660
661 failed:
662         usb_scuttle_anchored_urbs(&data->deferred);
663         return 0;
664 }
665
666 static int btusb_flush(struct hci_dev *hdev)
667 {
668         struct btusb_data *data = hdev->driver_data;
669
670         BT_DBG("%s", hdev->name);
671
672         usb_kill_anchored_urbs(&data->tx_anchor);
673
674         return 0;
675 }
676
677 static int btusb_send_frame(struct sk_buff *skb)
678 {
679         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
680         struct btusb_data *data = hdev->driver_data;
681         struct usb_ctrlrequest *dr;
682         struct urb *urb;
683         unsigned int pipe;
684         int err;
685
686         BT_DBG("%s", hdev->name);
687
688         if (!test_bit(HCI_RUNNING, &hdev->flags))
689                 return -EBUSY;
690
691         switch (bt_cb(skb)->pkt_type) {
692         case HCI_COMMAND_PKT:
693                 urb = usb_alloc_urb(0, GFP_ATOMIC);
694                 if (!urb)
695                         return -ENOMEM;
696
697                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
698                 if (!dr) {
699                         usb_free_urb(urb);
700                         return -ENOMEM;
701                 }
702
703                 dr->bRequestType = data->cmdreq_type;
704                 dr->bRequest     = 0;
705                 dr->wIndex       = 0;
706                 dr->wValue       = 0;
707                 dr->wLength      = __cpu_to_le16(skb->len);
708
709                 pipe = usb_sndctrlpipe(data->udev, 0x00);
710
711                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
712                                 skb->data, skb->len, btusb_tx_complete, skb);
713
714                 hdev->stat.cmd_tx++;
715                 break;
716
717         case HCI_ACLDATA_PKT:
718                 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
719                                                 hdev->conn_hash.le_num < 1))
720                         return -ENODEV;
721
722                 urb = usb_alloc_urb(0, GFP_ATOMIC);
723                 if (!urb)
724                         return -ENOMEM;
725
726                 pipe = usb_sndbulkpipe(data->udev,
727                                         data->bulk_tx_ep->bEndpointAddress);
728
729                 usb_fill_bulk_urb(urb, data->udev, pipe,
730                                 skb->data, skb->len, btusb_tx_complete, skb);
731
732                 hdev->stat.acl_tx++;
733                 break;
734
735         case HCI_SCODATA_PKT:
736                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
737                         return -ENODEV;
738
739                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
740                 if (!urb)
741                         return -ENOMEM;
742
743                 pipe = usb_sndisocpipe(data->udev,
744                                         data->isoc_tx_ep->bEndpointAddress);
745
746                 usb_fill_int_urb(urb, data->udev, pipe,
747                                 skb->data, skb->len, btusb_isoc_tx_complete,
748                                 skb, data->isoc_tx_ep->bInterval);
749
750                 urb->transfer_flags  = URB_ISO_ASAP;
751
752                 __fill_isoc_descriptor(urb, skb->len,
753                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
754
755                 hdev->stat.sco_tx++;
756                 goto skip_waking;
757
758         default:
759                 return -EILSEQ;
760         }
761
762         err = inc_tx(data);
763         if (err) {
764                 usb_anchor_urb(urb, &data->deferred);
765                 schedule_work(&data->waker);
766                 err = 0;
767                 goto done;
768         }
769
770 skip_waking:
771         usb_anchor_urb(urb, &data->tx_anchor);
772
773         err = usb_submit_urb(urb, GFP_ATOMIC);
774         if (err < 0) {
775                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
776                 kfree(urb->setup_packet);
777                 usb_unanchor_urb(urb);
778         } else {
779                 usb_mark_last_busy(data->udev);
780         }
781
782         usb_free_urb(urb);
783
784 done:
785         return err;
786 }
787
788 static void btusb_destruct(struct hci_dev *hdev)
789 {
790         struct btusb_data *data = hdev->driver_data;
791
792         BT_DBG("%s", hdev->name);
793
794         kfree(data);
795 }
796
797 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
798 {
799         struct btusb_data *data = hdev->driver_data;
800
801         BT_DBG("%s evt %d", hdev->name, evt);
802
803         if (hdev->conn_hash.sco_num != data->sco_num) {
804                 data->sco_num = hdev->conn_hash.sco_num;
805                 schedule_work(&data->work);
806         }
807 }
808
809 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
810 {
811         struct btusb_data *data = hdev->driver_data;
812         struct usb_interface *intf = data->isoc;
813         struct usb_endpoint_descriptor *ep_desc;
814         int i, err;
815
816         if (!data->isoc)
817                 return -ENODEV;
818
819         err = usb_set_interface(data->udev, 1, altsetting);
820         if (err < 0) {
821                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
822                 return err;
823         }
824
825         data->isoc_altsetting = altsetting;
826
827         data->isoc_tx_ep = NULL;
828         data->isoc_rx_ep = NULL;
829
830         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
831                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
832
833                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
834                         data->isoc_tx_ep = ep_desc;
835                         continue;
836                 }
837
838                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
839                         data->isoc_rx_ep = ep_desc;
840                         continue;
841                 }
842         }
843
844         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
845                 BT_ERR("%s invalid SCO descriptors", hdev->name);
846                 return -ENODEV;
847         }
848
849         return 0;
850 }
851
852 static void btusb_work(struct work_struct *work)
853 {
854         struct btusb_data *data = container_of(work, struct btusb_data, work);
855         struct hci_dev *hdev = data->hdev;
856         int err;
857
858         if (hdev->conn_hash.sco_num > 0) {
859                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
860                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
861                         if (err < 0) {
862                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
863                                 usb_kill_anchored_urbs(&data->isoc_anchor);
864                                 return;
865                         }
866
867                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
868                 }
869                 if (data->isoc_altsetting != 2) {
870                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
871                         usb_kill_anchored_urbs(&data->isoc_anchor);
872
873                         if (__set_isoc_interface(hdev, 2) < 0)
874                                 return;
875                 }
876
877                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
878                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
879                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
880                         else
881                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
882                 }
883         } else {
884                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
885                 usb_kill_anchored_urbs(&data->isoc_anchor);
886
887                 __set_isoc_interface(hdev, 0);
888                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
889                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
890         }
891 }
892
893 static void btusb_waker(struct work_struct *work)
894 {
895         struct btusb_data *data = container_of(work, struct btusb_data, waker);
896         int err;
897
898         err = usb_autopm_get_interface(data->intf);
899         if (err < 0)
900                 return;
901
902         usb_autopm_put_interface(data->intf);
903 }
904
905 static int btusb_probe(struct usb_interface *intf,
906                                 const struct usb_device_id *id)
907 {
908         struct usb_endpoint_descriptor *ep_desc;
909         struct btusb_data *data;
910         struct hci_dev *hdev;
911         int i, err;
912
913         BT_DBG("intf %p id %p", intf, id);
914
915         /* interface numbers are hardcoded in the spec */
916         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
917                 return -ENODEV;
918
919         if (!id->driver_info) {
920                 const struct usb_device_id *match;
921                 match = usb_match_id(intf, blacklist_table);
922                 if (match)
923                         id = match;
924         }
925
926         if (id->driver_info == BTUSB_IGNORE)
927                 return -ENODEV;
928
929         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
930                 return -ENODEV;
931
932         if (ignore_csr && id->driver_info & BTUSB_CSR)
933                 return -ENODEV;
934
935         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
936                 return -ENODEV;
937
938         if (id->driver_info & BTUSB_ATH3012) {
939                 struct usb_device *udev = interface_to_usbdev(intf);
940
941                 /* Old firmware would otherwise let ath3k driver load
942                  * patch and sysconfig files */
943                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
944                         return -ENODEV;
945         }
946
947         data = kzalloc(sizeof(*data), GFP_KERNEL);
948         if (!data)
949                 return -ENOMEM;
950
951         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
952                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
953
954                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
955                         data->intr_ep = ep_desc;
956                         continue;
957                 }
958
959                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
960                         data->bulk_tx_ep = ep_desc;
961                         continue;
962                 }
963
964                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
965                         data->bulk_rx_ep = ep_desc;
966                         continue;
967                 }
968         }
969
970         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
971                 kfree(data);
972                 return -ENODEV;
973         }
974
975         data->cmdreq_type = USB_TYPE_CLASS;
976
977         data->udev = interface_to_usbdev(intf);
978         data->intf = intf;
979
980         spin_lock_init(&data->lock);
981
982         INIT_WORK(&data->work, btusb_work);
983         INIT_WORK(&data->waker, btusb_waker);
984         spin_lock_init(&data->txlock);
985
986         init_usb_anchor(&data->tx_anchor);
987         init_usb_anchor(&data->intr_anchor);
988         init_usb_anchor(&data->bulk_anchor);
989         init_usb_anchor(&data->isoc_anchor);
990         init_usb_anchor(&data->deferred);
991
992         hdev = hci_alloc_dev();
993         if (!hdev) {
994                 kfree(data);
995                 return -ENOMEM;
996         }
997
998         hdev->bus = HCI_USB;
999         hdev->driver_data = data;
1000
1001         data->hdev = hdev;
1002
1003         SET_HCIDEV_DEV(hdev, &intf->dev);
1004
1005         hdev->open     = btusb_open;
1006         hdev->close    = btusb_close;
1007         hdev->flush    = btusb_flush;
1008         hdev->send     = btusb_send_frame;
1009         hdev->destruct = btusb_destruct;
1010         hdev->notify   = btusb_notify;
1011
1012         hdev->owner = THIS_MODULE;
1013
1014         /* Interface numbers are hardcoded in the specification */
1015         data->isoc = usb_ifnum_to_if(data->udev, 1);
1016
1017         if (!reset)
1018                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1019
1020         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1021                 if (!disable_scofix)
1022                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1023         }
1024
1025         if (id->driver_info & BTUSB_BROKEN_ISOC)
1026                 data->isoc = NULL;
1027
1028         if (id->driver_info & BTUSB_DIGIANSWER) {
1029                 data->cmdreq_type = USB_TYPE_VENDOR;
1030                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1031         }
1032
1033         if (id->driver_info & BTUSB_CSR) {
1034                 struct usb_device *udev = data->udev;
1035
1036                 /* Old firmware would otherwise execute USB reset */
1037                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1038                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1039         }
1040
1041         if (id->driver_info & BTUSB_SNIFFER) {
1042                 struct usb_device *udev = data->udev;
1043
1044                 /* New sniffer firmware has crippled HCI interface */
1045                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1046                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1047
1048                 data->isoc = NULL;
1049         }
1050
1051         if (id->driver_info & BTUSB_BCM92035) {
1052                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1053                 struct sk_buff *skb;
1054
1055                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1056                 if (skb) {
1057                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1058                         skb_queue_tail(&hdev->driver_init, skb);
1059                 }
1060         }
1061
1062         if (data->isoc) {
1063                 err = usb_driver_claim_interface(&btusb_driver,
1064                                                         data->isoc, data);
1065                 if (err < 0) {
1066                         hci_free_dev(hdev);
1067                         kfree(data);
1068                         return err;
1069                 }
1070         }
1071
1072         err = hci_register_dev(hdev);
1073         if (err < 0) {
1074                 hci_free_dev(hdev);
1075                 kfree(data);
1076                 return err;
1077         }
1078
1079         usb_set_intfdata(intf, data);
1080
1081         return 0;
1082 }
1083
1084 static void btusb_disconnect(struct usb_interface *intf)
1085 {
1086         struct btusb_data *data = usb_get_intfdata(intf);
1087         struct hci_dev *hdev;
1088
1089         BT_DBG("intf %p", intf);
1090
1091         if (!data)
1092                 return;
1093
1094         hdev = data->hdev;
1095
1096         __hci_dev_hold(hdev);
1097
1098         usb_set_intfdata(data->intf, NULL);
1099
1100         if (data->isoc)
1101                 usb_set_intfdata(data->isoc, NULL);
1102
1103         hci_unregister_dev(hdev);
1104
1105         if (intf == data->isoc)
1106                 usb_driver_release_interface(&btusb_driver, data->intf);
1107         else if (data->isoc)
1108                 usb_driver_release_interface(&btusb_driver, data->isoc);
1109
1110         __hci_dev_put(hdev);
1111
1112         hci_free_dev(hdev);
1113 }
1114
1115 #ifdef CONFIG_PM
1116 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1117 {
1118         struct btusb_data *data = usb_get_intfdata(intf);
1119
1120         BT_DBG("intf %p", intf);
1121
1122         if (data->suspend_count++)
1123                 return 0;
1124
1125         spin_lock_irq(&data->txlock);
1126         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1127                 set_bit(BTUSB_SUSPENDING, &data->flags);
1128                 spin_unlock_irq(&data->txlock);
1129         } else {
1130                 spin_unlock_irq(&data->txlock);
1131                 data->suspend_count--;
1132                 return -EBUSY;
1133         }
1134
1135         cancel_work_sync(&data->work);
1136
1137         btusb_stop_traffic(data);
1138         usb_kill_anchored_urbs(&data->tx_anchor);
1139
1140         return 0;
1141 }
1142
1143 static void play_deferred(struct btusb_data *data)
1144 {
1145         struct urb *urb;
1146         int err;
1147
1148         while ((urb = usb_get_from_anchor(&data->deferred))) {
1149                 err = usb_submit_urb(urb, GFP_ATOMIC);
1150                 if (err < 0)
1151                         break;
1152
1153                 data->tx_in_flight++;
1154         }
1155         usb_scuttle_anchored_urbs(&data->deferred);
1156 }
1157
1158 static int btusb_resume(struct usb_interface *intf)
1159 {
1160         struct btusb_data *data = usb_get_intfdata(intf);
1161         struct hci_dev *hdev = data->hdev;
1162         int err = 0;
1163
1164         BT_DBG("intf %p", intf);
1165
1166         if (--data->suspend_count)
1167                 return 0;
1168
1169         if (!test_bit(HCI_RUNNING, &hdev->flags))
1170                 goto done;
1171
1172         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1173                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1174                 if (err < 0) {
1175                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1176                         goto failed;
1177                 }
1178         }
1179
1180         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1181                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1182                 if (err < 0) {
1183                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1184                         goto failed;
1185                 }
1186
1187                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1188         }
1189
1190         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1191                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1192                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1193                 else
1194                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1195         }
1196
1197         spin_lock_irq(&data->txlock);
1198         play_deferred(data);
1199         clear_bit(BTUSB_SUSPENDING, &data->flags);
1200         spin_unlock_irq(&data->txlock);
1201         schedule_work(&data->work);
1202
1203         return 0;
1204
1205 failed:
1206         usb_scuttle_anchored_urbs(&data->deferred);
1207 done:
1208         spin_lock_irq(&data->txlock);
1209         clear_bit(BTUSB_SUSPENDING, &data->flags);
1210         spin_unlock_irq(&data->txlock);
1211
1212         return err;
1213 }
1214 #endif
1215
1216 static struct usb_driver btusb_driver = {
1217         .name           = "btusb",
1218         .probe          = btusb_probe,
1219         .disconnect     = btusb_disconnect,
1220 #ifdef CONFIG_PM
1221         .suspend        = btusb_suspend,
1222         .resume         = btusb_resume,
1223 #endif
1224         .id_table       = btusb_table,
1225         .supports_autosuspend = 1,
1226 };
1227
1228 static int __init btusb_init(void)
1229 {
1230         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1231
1232         return usb_register(&btusb_driver);
1233 }
1234
1235 static void __exit btusb_exit(void)
1236 {
1237         usb_deregister(&btusb_driver);
1238 }
1239
1240 module_init(btusb_init);
1241 module_exit(btusb_exit);
1242
1243 module_param(ignore_dga, bool, 0644);
1244 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1245
1246 module_param(ignore_csr, bool, 0644);
1247 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1248
1249 module_param(ignore_sniffer, bool, 0644);
1250 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1251
1252 module_param(disable_scofix, bool, 0644);
1253 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1254
1255 module_param(force_scofix, bool, 0644);
1256 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1257
1258 module_param(reset, bool, 0644);
1259 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1260
1261 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1262 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1263 MODULE_VERSION(VERSION);
1264 MODULE_LICENSE("GPL");