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