Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
[linux-3.10.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/module.h>
25 #include <linux/usb.h>
26
27 #include <net/bluetooth/bluetooth.h>
28 #include <net/bluetooth/hci_core.h>
29
30 #define VERSION "0.6"
31
32 static bool ignore_dga;
33 static bool ignore_csr;
34 static bool ignore_sniffer;
35 static bool disable_scofix;
36 static bool force_scofix;
37
38 static bool reset = 1;
39
40 static struct usb_driver btusb_driver;
41
42 #define BTUSB_IGNORE            0x01
43 #define BTUSB_DIGIANSWER        0x02
44 #define BTUSB_CSR               0x04
45 #define BTUSB_SNIFFER           0x08
46 #define BTUSB_BCM92035          0x10
47 #define BTUSB_BROKEN_ISOC       0x20
48 #define BTUSB_WRONG_SCO_MTU     0x40
49 #define BTUSB_ATH3012           0x80
50
51 static struct usb_device_id btusb_table[] = {
52         /* Generic Bluetooth USB device */
53         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
54
55         /* Apple-specific (Broadcom) devices */
56         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
57
58         /* Broadcom SoftSailing reporting vendor specific */
59         { USB_DEVICE(0x0a5c, 0x21e1) },
60
61         /* Apple MacBookPro 7,1 */
62         { USB_DEVICE(0x05ac, 0x8213) },
63
64         /* Apple iMac11,1 */
65         { USB_DEVICE(0x05ac, 0x8215) },
66
67         /* Apple MacBookPro6,2 */
68         { USB_DEVICE(0x05ac, 0x8218) },
69
70         /* Apple MacBookAir3,1, MacBookAir3,2 */
71         { USB_DEVICE(0x05ac, 0x821b) },
72
73         /* Apple MacBookAir4,1 */
74         { USB_DEVICE(0x05ac, 0x821f) },
75
76         /* Apple MacBookPro8,2 */
77         { USB_DEVICE(0x05ac, 0x821a) },
78
79         /* Apple MacMini5,1 */
80         { USB_DEVICE(0x05ac, 0x8281) },
81
82         /* AVM BlueFRITZ! USB v2.0 */
83         { USB_DEVICE(0x057c, 0x3800) },
84
85         /* Bluetooth Ultraport Module from IBM */
86         { USB_DEVICE(0x04bf, 0x030a) },
87
88         /* ALPS Modules with non-standard id */
89         { USB_DEVICE(0x044e, 0x3001) },
90         { USB_DEVICE(0x044e, 0x3002) },
91
92         /* Ericsson with non-standard id */
93         { USB_DEVICE(0x0bdb, 0x1002) },
94
95         /* Canyon CN-BTU1 with HID interfaces */
96         { USB_DEVICE(0x0c10, 0x0000) },
97
98         /* Broadcom BCM20702A0 */
99         { USB_DEVICE(0x0489, 0xe042) },
100         { USB_DEVICE(0x413c, 0x8197) },
101
102         /* Foxconn - Hon Hai */
103         { USB_DEVICE(0x0489, 0xe033) },
104
105         /*Broadcom devices with vendor specific id */
106         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
107
108         { }     /* Terminating entry */
109 };
110
111 MODULE_DEVICE_TABLE(usb, btusb_table);
112
113 static struct usb_device_id blacklist_table[] = {
114         /* CSR BlueCore devices */
115         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
116
117         /* Broadcom BCM2033 without firmware */
118         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
119
120         /* Atheros 3011 with sflash firmware */
121         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
122         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
123         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
124         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
125         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
126
127         /* Atheros AR9285 Malbec with sflash firmware */
128         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
129
130         /* Atheros 3012 with sflash firmware */
131         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
132         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
133         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
134         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
135         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
136         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
137         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
138         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
139
140         /* Atheros AR5BBU12 with sflash firmware */
141         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
142
143         /* Atheros AR5BBU12 with sflash firmware */
144         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
145         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
146
147         /* Broadcom BCM2035 */
148         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
149         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
150         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
151
152         /* Broadcom BCM2045 */
153         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
154         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156         /* IBM/Lenovo ThinkPad with Broadcom chip */
157         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
158         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
159
160         /* HP laptop with Broadcom chip */
161         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
162
163         /* Dell laptop with Broadcom chip */
164         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
165
166         /* Dell Wireless 370 and 410 devices */
167         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
168         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
169
170         /* Belkin F8T012 and F8T013 devices */
171         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
172         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
173
174         /* Asus WL-BTD202 device */
175         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
176
177         /* Kensington Bluetooth USB adapter */
178         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
179
180         /* RTX Telecom based adapters with buggy SCO support */
181         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
182         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
183
184         /* CONWISE Technology based adapters with buggy SCO support */
185         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
186
187         /* Digianswer devices */
188         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
189         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
190
191         /* CSR BlueCore Bluetooth Sniffer */
192         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
193
194         /* Frontline ComProbe Bluetooth Sniffer */
195         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
196
197         { }     /* Terminating entry */
198 };
199
200 #define BTUSB_MAX_ISOC_FRAMES   10
201
202 #define BTUSB_INTR_RUNNING      0
203 #define BTUSB_BULK_RUNNING      1
204 #define BTUSB_ISOC_RUNNING      2
205 #define BTUSB_SUSPENDING        3
206 #define BTUSB_DID_ISO_RESUME    4
207
208 struct btusb_data {
209         struct hci_dev       *hdev;
210         struct usb_device    *udev;
211         struct usb_interface *intf;
212         struct usb_interface *isoc;
213
214         spinlock_t lock;
215
216         unsigned long flags;
217
218         struct work_struct work;
219         struct work_struct waker;
220
221         struct usb_anchor tx_anchor;
222         struct usb_anchor intr_anchor;
223         struct usb_anchor bulk_anchor;
224         struct usb_anchor isoc_anchor;
225         struct usb_anchor deferred;
226         int tx_in_flight;
227         spinlock_t txlock;
228
229         struct usb_endpoint_descriptor *intr_ep;
230         struct usb_endpoint_descriptor *bulk_tx_ep;
231         struct usb_endpoint_descriptor *bulk_rx_ep;
232         struct usb_endpoint_descriptor *isoc_tx_ep;
233         struct usb_endpoint_descriptor *isoc_rx_ep;
234
235         __u8 cmdreq_type;
236
237         unsigned int sco_num;
238         int isoc_altsetting;
239         int suspend_count;
240 };
241
242 static int inc_tx(struct btusb_data *data)
243 {
244         unsigned long flags;
245         int rv;
246
247         spin_lock_irqsave(&data->txlock, flags);
248         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
249         if (!rv)
250                 data->tx_in_flight++;
251         spin_unlock_irqrestore(&data->txlock, flags);
252
253         return rv;
254 }
255
256 static void btusb_intr_complete(struct urb *urb)
257 {
258         struct hci_dev *hdev = urb->context;
259         struct btusb_data *data = hci_get_drvdata(hdev);
260         int err;
261
262         BT_DBG("%s urb %p status %d count %d", hdev->name,
263                                         urb, urb->status, urb->actual_length);
264
265         if (!test_bit(HCI_RUNNING, &hdev->flags))
266                 return;
267
268         if (urb->status == 0) {
269                 hdev->stat.byte_rx += urb->actual_length;
270
271                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
272                                                 urb->transfer_buffer,
273                                                 urb->actual_length) < 0) {
274                         BT_ERR("%s corrupted event packet", hdev->name);
275                         hdev->stat.err_rx++;
276                 }
277         }
278
279         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
280                 return;
281
282         usb_mark_last_busy(data->udev);
283         usb_anchor_urb(urb, &data->intr_anchor);
284
285         err = usb_submit_urb(urb, GFP_ATOMIC);
286         if (err < 0) {
287                 /* -EPERM: urb is being killed;
288                  * -ENODEV: device got disconnected */
289                 if (err != -EPERM && err != -ENODEV)
290                         BT_ERR("%s urb %p failed to resubmit (%d)",
291                                                 hdev->name, urb, -err);
292                 usb_unanchor_urb(urb);
293         }
294 }
295
296 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
297 {
298         struct btusb_data *data = hci_get_drvdata(hdev);
299         struct urb *urb;
300         unsigned char *buf;
301         unsigned int pipe;
302         int err, size;
303
304         BT_DBG("%s", hdev->name);
305
306         if (!data->intr_ep)
307                 return -ENODEV;
308
309         urb = usb_alloc_urb(0, mem_flags);
310         if (!urb)
311                 return -ENOMEM;
312
313         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
314
315         buf = kmalloc(size, mem_flags);
316         if (!buf) {
317                 usb_free_urb(urb);
318                 return -ENOMEM;
319         }
320
321         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
322
323         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
324                                                 btusb_intr_complete, hdev,
325                                                 data->intr_ep->bInterval);
326
327         urb->transfer_flags |= URB_FREE_BUFFER;
328
329         usb_anchor_urb(urb, &data->intr_anchor);
330
331         err = usb_submit_urb(urb, mem_flags);
332         if (err < 0) {
333                 if (err != -EPERM && err != -ENODEV)
334                         BT_ERR("%s urb %p submission failed (%d)",
335                                                 hdev->name, urb, -err);
336                 usb_unanchor_urb(urb);
337         }
338
339         usb_free_urb(urb);
340
341         return err;
342 }
343
344 static void btusb_bulk_complete(struct urb *urb)
345 {
346         struct hci_dev *hdev = urb->context;
347         struct btusb_data *data = hci_get_drvdata(hdev);
348         int err;
349
350         BT_DBG("%s urb %p status %d count %d", hdev->name,
351                                         urb, urb->status, urb->actual_length);
352
353         if (!test_bit(HCI_RUNNING, &hdev->flags))
354                 return;
355
356         if (urb->status == 0) {
357                 hdev->stat.byte_rx += urb->actual_length;
358
359                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
360                                                 urb->transfer_buffer,
361                                                 urb->actual_length) < 0) {
362                         BT_ERR("%s corrupted ACL packet", hdev->name);
363                         hdev->stat.err_rx++;
364                 }
365         }
366
367         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
368                 return;
369
370         usb_anchor_urb(urb, &data->bulk_anchor);
371         usb_mark_last_busy(data->udev);
372
373         err = usb_submit_urb(urb, GFP_ATOMIC);
374         if (err < 0) {
375                 /* -EPERM: urb is being killed;
376                  * -ENODEV: device got disconnected */
377                 if (err != -EPERM && err != -ENODEV)
378                         BT_ERR("%s urb %p failed to resubmit (%d)",
379                                                 hdev->name, urb, -err);
380                 usb_unanchor_urb(urb);
381         }
382 }
383
384 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
385 {
386         struct btusb_data *data = hci_get_drvdata(hdev);
387         struct urb *urb;
388         unsigned char *buf;
389         unsigned int pipe;
390         int err, size = HCI_MAX_FRAME_SIZE;
391
392         BT_DBG("%s", hdev->name);
393
394         if (!data->bulk_rx_ep)
395                 return -ENODEV;
396
397         urb = usb_alloc_urb(0, mem_flags);
398         if (!urb)
399                 return -ENOMEM;
400
401         buf = kmalloc(size, mem_flags);
402         if (!buf) {
403                 usb_free_urb(urb);
404                 return -ENOMEM;
405         }
406
407         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
408
409         usb_fill_bulk_urb(urb, data->udev, pipe,
410                                         buf, size, btusb_bulk_complete, hdev);
411
412         urb->transfer_flags |= URB_FREE_BUFFER;
413
414         usb_mark_last_busy(data->udev);
415         usb_anchor_urb(urb, &data->bulk_anchor);
416
417         err = usb_submit_urb(urb, mem_flags);
418         if (err < 0) {
419                 if (err != -EPERM && err != -ENODEV)
420                         BT_ERR("%s urb %p submission failed (%d)",
421                                                 hdev->name, urb, -err);
422                 usb_unanchor_urb(urb);
423         }
424
425         usb_free_urb(urb);
426
427         return err;
428 }
429
430 static void btusb_isoc_complete(struct urb *urb)
431 {
432         struct hci_dev *hdev = urb->context;
433         struct btusb_data *data = hci_get_drvdata(hdev);
434         int i, err;
435
436         BT_DBG("%s urb %p status %d count %d", hdev->name,
437                                         urb, urb->status, urb->actual_length);
438
439         if (!test_bit(HCI_RUNNING, &hdev->flags))
440                 return;
441
442         if (urb->status == 0) {
443                 for (i = 0; i < urb->number_of_packets; i++) {
444                         unsigned int offset = urb->iso_frame_desc[i].offset;
445                         unsigned int length = urb->iso_frame_desc[i].actual_length;
446
447                         if (urb->iso_frame_desc[i].status)
448                                 continue;
449
450                         hdev->stat.byte_rx += length;
451
452                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
453                                                 urb->transfer_buffer + offset,
454                                                                 length) < 0) {
455                                 BT_ERR("%s corrupted SCO packet", hdev->name);
456                                 hdev->stat.err_rx++;
457                         }
458                 }
459         }
460
461         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
462                 return;
463
464         usb_anchor_urb(urb, &data->isoc_anchor);
465
466         err = usb_submit_urb(urb, GFP_ATOMIC);
467         if (err < 0) {
468                 /* -EPERM: urb is being killed;
469                  * -ENODEV: device got disconnected */
470                 if (err != -EPERM && err != -ENODEV)
471                         BT_ERR("%s urb %p failed to resubmit (%d)",
472                                                 hdev->name, urb, -err);
473                 usb_unanchor_urb(urb);
474         }
475 }
476
477 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
478 {
479         int i, offset = 0;
480
481         BT_DBG("len %d mtu %d", len, mtu);
482
483         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
484                                         i++, offset += mtu, len -= mtu) {
485                 urb->iso_frame_desc[i].offset = offset;
486                 urb->iso_frame_desc[i].length = mtu;
487         }
488
489         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
490                 urb->iso_frame_desc[i].offset = offset;
491                 urb->iso_frame_desc[i].length = len;
492                 i++;
493         }
494
495         urb->number_of_packets = i;
496 }
497
498 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
499 {
500         struct btusb_data *data = hci_get_drvdata(hdev);
501         struct urb *urb;
502         unsigned char *buf;
503         unsigned int pipe;
504         int err, size;
505
506         BT_DBG("%s", hdev->name);
507
508         if (!data->isoc_rx_ep)
509                 return -ENODEV;
510
511         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
512         if (!urb)
513                 return -ENOMEM;
514
515         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
516                                                 BTUSB_MAX_ISOC_FRAMES;
517
518         buf = kmalloc(size, mem_flags);
519         if (!buf) {
520                 usb_free_urb(urb);
521                 return -ENOMEM;
522         }
523
524         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
525
526         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
527                                 hdev, data->isoc_rx_ep->bInterval);
528
529         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
530
531         __fill_isoc_descriptor(urb, size,
532                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
533
534         usb_anchor_urb(urb, &data->isoc_anchor);
535
536         err = usb_submit_urb(urb, mem_flags);
537         if (err < 0) {
538                 if (err != -EPERM && err != -ENODEV)
539                         BT_ERR("%s urb %p submission failed (%d)",
540                                                 hdev->name, urb, -err);
541                 usb_unanchor_urb(urb);
542         }
543
544         usb_free_urb(urb);
545
546         return err;
547 }
548
549 static void btusb_tx_complete(struct urb *urb)
550 {
551         struct sk_buff *skb = urb->context;
552         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
553         struct btusb_data *data = hci_get_drvdata(hdev);
554
555         BT_DBG("%s urb %p status %d count %d", hdev->name,
556                                         urb, urb->status, urb->actual_length);
557
558         if (!test_bit(HCI_RUNNING, &hdev->flags))
559                 goto done;
560
561         if (!urb->status)
562                 hdev->stat.byte_tx += urb->transfer_buffer_length;
563         else
564                 hdev->stat.err_tx++;
565
566 done:
567         spin_lock(&data->txlock);
568         data->tx_in_flight--;
569         spin_unlock(&data->txlock);
570
571         kfree(urb->setup_packet);
572
573         kfree_skb(skb);
574 }
575
576 static void btusb_isoc_tx_complete(struct urb *urb)
577 {
578         struct sk_buff *skb = urb->context;
579         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
580
581         BT_DBG("%s urb %p status %d count %d", hdev->name,
582                                         urb, urb->status, urb->actual_length);
583
584         if (!test_bit(HCI_RUNNING, &hdev->flags))
585                 goto done;
586
587         if (!urb->status)
588                 hdev->stat.byte_tx += urb->transfer_buffer_length;
589         else
590                 hdev->stat.err_tx++;
591
592 done:
593         kfree(urb->setup_packet);
594
595         kfree_skb(skb);
596 }
597
598 static int btusb_open(struct hci_dev *hdev)
599 {
600         struct btusb_data *data = hci_get_drvdata(hdev);
601         int err;
602
603         BT_DBG("%s", hdev->name);
604
605         err = usb_autopm_get_interface(data->intf);
606         if (err < 0)
607                 return err;
608
609         data->intf->needs_remote_wakeup = 1;
610
611         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
612                 goto done;
613
614         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
615                 goto done;
616
617         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
618         if (err < 0)
619                 goto failed;
620
621         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
622         if (err < 0) {
623                 usb_kill_anchored_urbs(&data->intr_anchor);
624                 goto failed;
625         }
626
627         set_bit(BTUSB_BULK_RUNNING, &data->flags);
628         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
629
630 done:
631         usb_autopm_put_interface(data->intf);
632         return 0;
633
634 failed:
635         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
636         clear_bit(HCI_RUNNING, &hdev->flags);
637         usb_autopm_put_interface(data->intf);
638         return err;
639 }
640
641 static void btusb_stop_traffic(struct btusb_data *data)
642 {
643         usb_kill_anchored_urbs(&data->intr_anchor);
644         usb_kill_anchored_urbs(&data->bulk_anchor);
645         usb_kill_anchored_urbs(&data->isoc_anchor);
646 }
647
648 static int btusb_close(struct hci_dev *hdev)
649 {
650         struct btusb_data *data = hci_get_drvdata(hdev);
651         int err;
652
653         BT_DBG("%s", hdev->name);
654
655         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
656                 return 0;
657
658         cancel_work_sync(&data->work);
659         cancel_work_sync(&data->waker);
660
661         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
662         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
663         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
664
665         btusb_stop_traffic(data);
666         err = usb_autopm_get_interface(data->intf);
667         if (err < 0)
668                 goto failed;
669
670         data->intf->needs_remote_wakeup = 0;
671         usb_autopm_put_interface(data->intf);
672
673 failed:
674         usb_scuttle_anchored_urbs(&data->deferred);
675         return 0;
676 }
677
678 static int btusb_flush(struct hci_dev *hdev)
679 {
680         struct btusb_data *data = hci_get_drvdata(hdev);
681
682         BT_DBG("%s", hdev->name);
683
684         usb_kill_anchored_urbs(&data->tx_anchor);
685
686         return 0;
687 }
688
689 static int btusb_send_frame(struct sk_buff *skb)
690 {
691         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
692         struct btusb_data *data = hci_get_drvdata(hdev);
693         struct usb_ctrlrequest *dr;
694         struct urb *urb;
695         unsigned int pipe;
696         int err;
697
698         BT_DBG("%s", hdev->name);
699
700         if (!test_bit(HCI_RUNNING, &hdev->flags))
701                 return -EBUSY;
702
703         switch (bt_cb(skb)->pkt_type) {
704         case HCI_COMMAND_PKT:
705                 urb = usb_alloc_urb(0, GFP_ATOMIC);
706                 if (!urb)
707                         return -ENOMEM;
708
709                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
710                 if (!dr) {
711                         usb_free_urb(urb);
712                         return -ENOMEM;
713                 }
714
715                 dr->bRequestType = data->cmdreq_type;
716                 dr->bRequest     = 0;
717                 dr->wIndex       = 0;
718                 dr->wValue       = 0;
719                 dr->wLength      = __cpu_to_le16(skb->len);
720
721                 pipe = usb_sndctrlpipe(data->udev, 0x00);
722
723                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
724                                 skb->data, skb->len, btusb_tx_complete, skb);
725
726                 hdev->stat.cmd_tx++;
727                 break;
728
729         case HCI_ACLDATA_PKT:
730                 if (!data->bulk_tx_ep)
731                         return -ENODEV;
732
733                 urb = usb_alloc_urb(0, GFP_ATOMIC);
734                 if (!urb)
735                         return -ENOMEM;
736
737                 pipe = usb_sndbulkpipe(data->udev,
738                                         data->bulk_tx_ep->bEndpointAddress);
739
740                 usb_fill_bulk_urb(urb, data->udev, pipe,
741                                 skb->data, skb->len, btusb_tx_complete, skb);
742
743                 hdev->stat.acl_tx++;
744                 break;
745
746         case HCI_SCODATA_PKT:
747                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
748                         return -ENODEV;
749
750                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
751                 if (!urb)
752                         return -ENOMEM;
753
754                 pipe = usb_sndisocpipe(data->udev,
755                                         data->isoc_tx_ep->bEndpointAddress);
756
757                 usb_fill_int_urb(urb, data->udev, pipe,
758                                 skb->data, skb->len, btusb_isoc_tx_complete,
759                                 skb, data->isoc_tx_ep->bInterval);
760
761                 urb->transfer_flags  = URB_ISO_ASAP;
762
763                 __fill_isoc_descriptor(urb, skb->len,
764                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
765
766                 hdev->stat.sco_tx++;
767                 goto skip_waking;
768
769         default:
770                 return -EILSEQ;
771         }
772
773         err = inc_tx(data);
774         if (err) {
775                 usb_anchor_urb(urb, &data->deferred);
776                 schedule_work(&data->waker);
777                 err = 0;
778                 goto done;
779         }
780
781 skip_waking:
782         usb_anchor_urb(urb, &data->tx_anchor);
783
784         err = usb_submit_urb(urb, GFP_ATOMIC);
785         if (err < 0) {
786                 if (err != -EPERM && err != -ENODEV)
787                         BT_ERR("%s urb %p submission failed (%d)",
788                                                 hdev->name, urb, -err);
789                 kfree(urb->setup_packet);
790                 usb_unanchor_urb(urb);
791         } else {
792                 usb_mark_last_busy(data->udev);
793         }
794
795 done:
796         usb_free_urb(urb);
797         return err;
798 }
799
800 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
801 {
802         struct btusb_data *data = hci_get_drvdata(hdev);
803
804         BT_DBG("%s evt %d", hdev->name, evt);
805
806         if (hdev->conn_hash.sco_num != data->sco_num) {
807                 data->sco_num = hdev->conn_hash.sco_num;
808                 schedule_work(&data->work);
809         }
810 }
811
812 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
813 {
814         struct btusb_data *data = hci_get_drvdata(hdev);
815         struct usb_interface *intf = data->isoc;
816         struct usb_endpoint_descriptor *ep_desc;
817         int i, err;
818
819         if (!data->isoc)
820                 return -ENODEV;
821
822         err = usb_set_interface(data->udev, 1, altsetting);
823         if (err < 0) {
824                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
825                 return err;
826         }
827
828         data->isoc_altsetting = altsetting;
829
830         data->isoc_tx_ep = NULL;
831         data->isoc_rx_ep = NULL;
832
833         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
834                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
835
836                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
837                         data->isoc_tx_ep = ep_desc;
838                         continue;
839                 }
840
841                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
842                         data->isoc_rx_ep = ep_desc;
843                         continue;
844                 }
845         }
846
847         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
848                 BT_ERR("%s invalid SCO descriptors", hdev->name);
849                 return -ENODEV;
850         }
851
852         return 0;
853 }
854
855 static void btusb_work(struct work_struct *work)
856 {
857         struct btusb_data *data = container_of(work, struct btusb_data, work);
858         struct hci_dev *hdev = data->hdev;
859         int new_alts;
860         int err;
861
862         if (hdev->conn_hash.sco_num > 0) {
863                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
864                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
865                         if (err < 0) {
866                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
867                                 usb_kill_anchored_urbs(&data->isoc_anchor);
868                                 return;
869                         }
870
871                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
872                 }
873
874                 if (hdev->voice_setting & 0x0020) {
875                         static const int alts[3] = { 2, 4, 5 };
876                         new_alts = alts[hdev->conn_hash.sco_num - 1];
877                 } else {
878                         new_alts = hdev->conn_hash.sco_num;
879                 }
880
881                 if (data->isoc_altsetting != new_alts) {
882                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
883                         usb_kill_anchored_urbs(&data->isoc_anchor);
884
885                         if (__set_isoc_interface(hdev, new_alts) < 0)
886                                 return;
887                 }
888
889                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
890                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
891                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
892                         else
893                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
894                 }
895         } else {
896                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
897                 usb_kill_anchored_urbs(&data->isoc_anchor);
898
899                 __set_isoc_interface(hdev, 0);
900                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
901                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
902         }
903 }
904
905 static void btusb_waker(struct work_struct *work)
906 {
907         struct btusb_data *data = container_of(work, struct btusb_data, waker);
908         int err;
909
910         err = usb_autopm_get_interface(data->intf);
911         if (err < 0)
912                 return;
913
914         usb_autopm_put_interface(data->intf);
915 }
916
917 static int btusb_probe(struct usb_interface *intf,
918                                 const struct usb_device_id *id)
919 {
920         struct usb_endpoint_descriptor *ep_desc;
921         struct btusb_data *data;
922         struct hci_dev *hdev;
923         int i, err;
924
925         BT_DBG("intf %p id %p", intf, id);
926
927         /* interface numbers are hardcoded in the spec */
928         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
929                 return -ENODEV;
930
931         if (!id->driver_info) {
932                 const struct usb_device_id *match;
933                 match = usb_match_id(intf, blacklist_table);
934                 if (match)
935                         id = match;
936         }
937
938         if (id->driver_info == BTUSB_IGNORE)
939                 return -ENODEV;
940
941         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
942                 return -ENODEV;
943
944         if (ignore_csr && id->driver_info & BTUSB_CSR)
945                 return -ENODEV;
946
947         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
948                 return -ENODEV;
949
950         if (id->driver_info & BTUSB_ATH3012) {
951                 struct usb_device *udev = interface_to_usbdev(intf);
952
953                 /* Old firmware would otherwise let ath3k driver load
954                  * patch and sysconfig files */
955                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
956                         return -ENODEV;
957         }
958
959         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
960         if (!data)
961                 return -ENOMEM;
962
963         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
964                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
965
966                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
967                         data->intr_ep = ep_desc;
968                         continue;
969                 }
970
971                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
972                         data->bulk_tx_ep = ep_desc;
973                         continue;
974                 }
975
976                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
977                         data->bulk_rx_ep = ep_desc;
978                         continue;
979                 }
980         }
981
982         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
983                 return -ENODEV;
984
985         data->cmdreq_type = USB_TYPE_CLASS;
986
987         data->udev = interface_to_usbdev(intf);
988         data->intf = intf;
989
990         spin_lock_init(&data->lock);
991
992         INIT_WORK(&data->work, btusb_work);
993         INIT_WORK(&data->waker, btusb_waker);
994         spin_lock_init(&data->txlock);
995
996         init_usb_anchor(&data->tx_anchor);
997         init_usb_anchor(&data->intr_anchor);
998         init_usb_anchor(&data->bulk_anchor);
999         init_usb_anchor(&data->isoc_anchor);
1000         init_usb_anchor(&data->deferred);
1001
1002         hdev = hci_alloc_dev();
1003         if (!hdev)
1004                 return -ENOMEM;
1005
1006         hdev->bus = HCI_USB;
1007         hci_set_drvdata(hdev, data);
1008
1009         data->hdev = hdev;
1010
1011         SET_HCIDEV_DEV(hdev, &intf->dev);
1012
1013         hdev->open     = btusb_open;
1014         hdev->close    = btusb_close;
1015         hdev->flush    = btusb_flush;
1016         hdev->send     = btusb_send_frame;
1017         hdev->notify   = btusb_notify;
1018
1019         /* Interface numbers are hardcoded in the specification */
1020         data->isoc = usb_ifnum_to_if(data->udev, 1);
1021
1022         if (!reset)
1023                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1024
1025         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1026                 if (!disable_scofix)
1027                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1028         }
1029
1030         if (id->driver_info & BTUSB_BROKEN_ISOC)
1031                 data->isoc = NULL;
1032
1033         if (id->driver_info & BTUSB_DIGIANSWER) {
1034                 data->cmdreq_type = USB_TYPE_VENDOR;
1035                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1036         }
1037
1038         if (id->driver_info & BTUSB_CSR) {
1039                 struct usb_device *udev = data->udev;
1040
1041                 /* Old firmware would otherwise execute USB reset */
1042                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1043                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1044         }
1045
1046         if (id->driver_info & BTUSB_SNIFFER) {
1047                 struct usb_device *udev = data->udev;
1048
1049                 /* New sniffer firmware has crippled HCI interface */
1050                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1051                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1052
1053                 data->isoc = NULL;
1054         }
1055
1056         if (id->driver_info & BTUSB_BCM92035) {
1057                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1058                 struct sk_buff *skb;
1059
1060                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1061                 if (skb) {
1062                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1063                         skb_queue_tail(&hdev->driver_init, skb);
1064                 }
1065         }
1066
1067         if (data->isoc) {
1068                 err = usb_driver_claim_interface(&btusb_driver,
1069                                                         data->isoc, data);
1070                 if (err < 0) {
1071                         hci_free_dev(hdev);
1072                         return err;
1073                 }
1074         }
1075
1076         err = hci_register_dev(hdev);
1077         if (err < 0) {
1078                 hci_free_dev(hdev);
1079                 return err;
1080         }
1081
1082         usb_set_intfdata(intf, data);
1083
1084         return 0;
1085 }
1086
1087 static void btusb_disconnect(struct usb_interface *intf)
1088 {
1089         struct btusb_data *data = usb_get_intfdata(intf);
1090         struct hci_dev *hdev;
1091
1092         BT_DBG("intf %p", intf);
1093
1094         if (!data)
1095                 return;
1096
1097         hdev = data->hdev;
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_free_dev(hdev);
1111 }
1112
1113 #ifdef CONFIG_PM
1114 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1115 {
1116         struct btusb_data *data = usb_get_intfdata(intf);
1117
1118         BT_DBG("intf %p", intf);
1119
1120         if (data->suspend_count++)
1121                 return 0;
1122
1123         spin_lock_irq(&data->txlock);
1124         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1125                 set_bit(BTUSB_SUSPENDING, &data->flags);
1126                 spin_unlock_irq(&data->txlock);
1127         } else {
1128                 spin_unlock_irq(&data->txlock);
1129                 data->suspend_count--;
1130                 return -EBUSY;
1131         }
1132
1133         cancel_work_sync(&data->work);
1134
1135         btusb_stop_traffic(data);
1136         usb_kill_anchored_urbs(&data->tx_anchor);
1137
1138         return 0;
1139 }
1140
1141 static void play_deferred(struct btusb_data *data)
1142 {
1143         struct urb *urb;
1144         int err;
1145
1146         while ((urb = usb_get_from_anchor(&data->deferred))) {
1147                 err = usb_submit_urb(urb, GFP_ATOMIC);
1148                 if (err < 0)
1149                         break;
1150
1151                 data->tx_in_flight++;
1152         }
1153         usb_scuttle_anchored_urbs(&data->deferred);
1154 }
1155
1156 static int btusb_resume(struct usb_interface *intf)
1157 {
1158         struct btusb_data *data = usb_get_intfdata(intf);
1159         struct hci_dev *hdev = data->hdev;
1160         int err = 0;
1161
1162         BT_DBG("intf %p", intf);
1163
1164         if (--data->suspend_count)
1165                 return 0;
1166
1167         if (!test_bit(HCI_RUNNING, &hdev->flags))
1168                 goto done;
1169
1170         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1171                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1172                 if (err < 0) {
1173                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1174                         goto failed;
1175                 }
1176         }
1177
1178         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1179                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1180                 if (err < 0) {
1181                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1182                         goto failed;
1183                 }
1184
1185                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1186         }
1187
1188         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1189                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1190                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1191                 else
1192                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1193         }
1194
1195         spin_lock_irq(&data->txlock);
1196         play_deferred(data);
1197         clear_bit(BTUSB_SUSPENDING, &data->flags);
1198         spin_unlock_irq(&data->txlock);
1199         schedule_work(&data->work);
1200
1201         return 0;
1202
1203 failed:
1204         usb_scuttle_anchored_urbs(&data->deferred);
1205 done:
1206         spin_lock_irq(&data->txlock);
1207         clear_bit(BTUSB_SUSPENDING, &data->flags);
1208         spin_unlock_irq(&data->txlock);
1209
1210         return err;
1211 }
1212 #endif
1213
1214 static struct usb_driver btusb_driver = {
1215         .name           = "btusb",
1216         .probe          = btusb_probe,
1217         .disconnect     = btusb_disconnect,
1218 #ifdef CONFIG_PM
1219         .suspend        = btusb_suspend,
1220         .resume         = btusb_resume,
1221 #endif
1222         .id_table       = btusb_table,
1223         .supports_autosuspend = 1,
1224         .disable_hub_initiated_lpm = 1,
1225 };
1226
1227 module_usb_driver(btusb_driver);
1228
1229 module_param(ignore_dga, bool, 0644);
1230 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1231
1232 module_param(ignore_csr, bool, 0644);
1233 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1234
1235 module_param(ignore_sniffer, bool, 0644);
1236 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1237
1238 module_param(disable_scofix, bool, 0644);
1239 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1240
1241 module_param(force_scofix, bool, 0644);
1242 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1243
1244 module_param(reset, bool, 0644);
1245 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1246
1247 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1248 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1249 MODULE_VERSION(VERSION);
1250 MODULE_LICENSE("GPL");