Bluetooth: Add support for Sony Vaio T-Series
[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         /* Broadcom SoftSailing reporting vendor specific */
56         { USB_DEVICE(0x0a5c, 0x21e1) },
57
58         /* Apple MacBookPro 7,1 */
59         { USB_DEVICE(0x05ac, 0x8213) },
60
61         /* Apple iMac11,1 */
62         { USB_DEVICE(0x05ac, 0x8215) },
63
64         /* Apple MacBookPro6,2 */
65         { USB_DEVICE(0x05ac, 0x8218) },
66
67         /* Apple MacBookAir3,1, MacBookAir3,2 */
68         { USB_DEVICE(0x05ac, 0x821b) },
69
70         /* Apple MacBookAir4,1 */
71         { USB_DEVICE(0x05ac, 0x821f) },
72
73         /* Apple MacBookPro8,2 */
74         { USB_DEVICE(0x05ac, 0x821a) },
75
76         /* Apple MacMini5,1 */
77         { USB_DEVICE(0x05ac, 0x8281) },
78
79         /* AVM BlueFRITZ! USB v2.0 */
80         { USB_DEVICE(0x057c, 0x3800) },
81
82         /* Bluetooth Ultraport Module from IBM */
83         { USB_DEVICE(0x04bf, 0x030a) },
84
85         /* ALPS Modules with non-standard id */
86         { USB_DEVICE(0x044e, 0x3001) },
87         { USB_DEVICE(0x044e, 0x3002) },
88
89         /* Ericsson with non-standard id */
90         { USB_DEVICE(0x0bdb, 0x1002) },
91
92         /* Canyon CN-BTU1 with HID interfaces */
93         { USB_DEVICE(0x0c10, 0x0000) },
94
95         /* Broadcom BCM20702A0 */
96         { USB_DEVICE(0x0489, 0xe042) },
97         { USB_DEVICE(0x0a5c, 0x21e3) },
98         { USB_DEVICE(0x0a5c, 0x21e6) },
99         { USB_DEVICE(0x0a5c, 0x21e8) },
100         { USB_DEVICE(0x0a5c, 0x21f3) },
101         { USB_DEVICE(0x0a5c, 0x21f4) },
102         { USB_DEVICE(0x413c, 0x8197) },
103
104         /* Foxconn - Hon Hai */
105         { USB_DEVICE(0x0489, 0xe033) },
106
107         { }     /* Terminating entry */
108 };
109
110 MODULE_DEVICE_TABLE(usb, btusb_table);
111
112 static struct usb_device_id blacklist_table[] = {
113         /* CSR BlueCore devices */
114         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
115
116         /* Broadcom BCM2033 without firmware */
117         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
118
119         /* Atheros 3011 with sflash firmware */
120         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
121         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
122         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
123         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
124         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
125
126         /* Atheros AR9285 Malbec with sflash firmware */
127         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
128
129         /* Atheros 3012 with sflash firmware */
130         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
131         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
132         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
133         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
134         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
135         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
136         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
137         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
138
139         /* Atheros AR5BBU12 with sflash firmware */
140         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
141
142         /* Atheros AR5BBU12 with sflash firmware */
143         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
144         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
145
146         /* Broadcom BCM2035 */
147         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
148         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
149         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
150
151         /* Broadcom BCM2045 */
152         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
153         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
154
155         /* IBM/Lenovo ThinkPad with Broadcom chip */
156         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
157         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
158
159         /* HP laptop with Broadcom chip */
160         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
161
162         /* Dell laptop with Broadcom chip */
163         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
164
165         /* Dell Wireless 370 and 410 devices */
166         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
167         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
168
169         /* Belkin F8T012 and F8T013 devices */
170         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
171         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
172
173         /* Asus WL-BTD202 device */
174         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
175
176         /* Kensington Bluetooth USB adapter */
177         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
178
179         /* RTX Telecom based adapters with buggy SCO support */
180         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
181         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
182
183         /* CONWISE Technology based adapters with buggy SCO support */
184         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
185
186         /* Digianswer devices */
187         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
188         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
189
190         /* CSR BlueCore Bluetooth Sniffer */
191         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
192
193         /* Frontline ComProbe Bluetooth Sniffer */
194         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
195
196         { }     /* Terminating entry */
197 };
198
199 #define BTUSB_MAX_ISOC_FRAMES   10
200
201 #define BTUSB_INTR_RUNNING      0
202 #define BTUSB_BULK_RUNNING      1
203 #define BTUSB_ISOC_RUNNING      2
204 #define BTUSB_SUSPENDING        3
205 #define BTUSB_DID_ISO_RESUME    4
206
207 struct btusb_data {
208         struct hci_dev       *hdev;
209         struct usb_device    *udev;
210         struct usb_interface *intf;
211         struct usb_interface *isoc;
212
213         spinlock_t lock;
214
215         unsigned long flags;
216
217         struct work_struct work;
218         struct work_struct waker;
219
220         struct usb_anchor tx_anchor;
221         struct usb_anchor intr_anchor;
222         struct usb_anchor bulk_anchor;
223         struct usb_anchor isoc_anchor;
224         struct usb_anchor deferred;
225         int tx_in_flight;
226         spinlock_t txlock;
227
228         struct usb_endpoint_descriptor *intr_ep;
229         struct usb_endpoint_descriptor *bulk_tx_ep;
230         struct usb_endpoint_descriptor *bulk_rx_ep;
231         struct usb_endpoint_descriptor *isoc_tx_ep;
232         struct usb_endpoint_descriptor *isoc_rx_ep;
233
234         __u8 cmdreq_type;
235
236         unsigned int sco_num;
237         int isoc_altsetting;
238         int suspend_count;
239 };
240
241 static int inc_tx(struct btusb_data *data)
242 {
243         unsigned long flags;
244         int rv;
245
246         spin_lock_irqsave(&data->txlock, flags);
247         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
248         if (!rv)
249                 data->tx_in_flight++;
250         spin_unlock_irqrestore(&data->txlock, flags);
251
252         return rv;
253 }
254
255 static void btusb_intr_complete(struct urb *urb)
256 {
257         struct hci_dev *hdev = urb->context;
258         struct btusb_data *data = hci_get_drvdata(hdev);
259         int err;
260
261         BT_DBG("%s urb %p status %d count %d", hdev->name,
262                                         urb, urb->status, urb->actual_length);
263
264         if (!test_bit(HCI_RUNNING, &hdev->flags))
265                 return;
266
267         if (urb->status == 0) {
268                 hdev->stat.byte_rx += urb->actual_length;
269
270                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
271                                                 urb->transfer_buffer,
272                                                 urb->actual_length) < 0) {
273                         BT_ERR("%s corrupted event packet", hdev->name);
274                         hdev->stat.err_rx++;
275                 }
276         }
277
278         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
279                 return;
280
281         usb_mark_last_busy(data->udev);
282         usb_anchor_urb(urb, &data->intr_anchor);
283
284         err = usb_submit_urb(urb, GFP_ATOMIC);
285         if (err < 0) {
286                 /* -EPERM: urb is being killed;
287                  * -ENODEV: device got disconnected */
288                 if (err != -EPERM && err != -ENODEV)
289                         BT_ERR("%s urb %p failed to resubmit (%d)",
290                                                 hdev->name, urb, -err);
291                 usb_unanchor_urb(urb);
292         }
293 }
294
295 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
296 {
297         struct btusb_data *data = hci_get_drvdata(hdev);
298         struct urb *urb;
299         unsigned char *buf;
300         unsigned int pipe;
301         int err, size;
302
303         BT_DBG("%s", hdev->name);
304
305         if (!data->intr_ep)
306                 return -ENODEV;
307
308         urb = usb_alloc_urb(0, mem_flags);
309         if (!urb)
310                 return -ENOMEM;
311
312         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
313
314         buf = kmalloc(size, mem_flags);
315         if (!buf) {
316                 usb_free_urb(urb);
317                 return -ENOMEM;
318         }
319
320         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
321
322         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
323                                                 btusb_intr_complete, hdev,
324                                                 data->intr_ep->bInterval);
325
326         urb->transfer_flags |= URB_FREE_BUFFER;
327
328         usb_anchor_urb(urb, &data->intr_anchor);
329
330         err = usb_submit_urb(urb, mem_flags);
331         if (err < 0) {
332                 if (err != -EPERM && err != -ENODEV)
333                         BT_ERR("%s urb %p submission failed (%d)",
334                                                 hdev->name, urb, -err);
335                 usb_unanchor_urb(urb);
336         }
337
338         usb_free_urb(urb);
339
340         return err;
341 }
342
343 static void btusb_bulk_complete(struct urb *urb)
344 {
345         struct hci_dev *hdev = urb->context;
346         struct btusb_data *data = hci_get_drvdata(hdev);
347         int err;
348
349         BT_DBG("%s urb %p status %d count %d", hdev->name,
350                                         urb, urb->status, urb->actual_length);
351
352         if (!test_bit(HCI_RUNNING, &hdev->flags))
353                 return;
354
355         if (urb->status == 0) {
356                 hdev->stat.byte_rx += urb->actual_length;
357
358                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
359                                                 urb->transfer_buffer,
360                                                 urb->actual_length) < 0) {
361                         BT_ERR("%s corrupted ACL packet", hdev->name);
362                         hdev->stat.err_rx++;
363                 }
364         }
365
366         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
367                 return;
368
369         usb_anchor_urb(urb, &data->bulk_anchor);
370         usb_mark_last_busy(data->udev);
371
372         err = usb_submit_urb(urb, GFP_ATOMIC);
373         if (err < 0) {
374                 /* -EPERM: urb is being killed;
375                  * -ENODEV: device got disconnected */
376                 if (err != -EPERM && err != -ENODEV)
377                         BT_ERR("%s urb %p failed to resubmit (%d)",
378                                                 hdev->name, urb, -err);
379                 usb_unanchor_urb(urb);
380         }
381 }
382
383 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
384 {
385         struct btusb_data *data = hci_get_drvdata(hdev);
386         struct urb *urb;
387         unsigned char *buf;
388         unsigned int pipe;
389         int err, size = HCI_MAX_FRAME_SIZE;
390
391         BT_DBG("%s", hdev->name);
392
393         if (!data->bulk_rx_ep)
394                 return -ENODEV;
395
396         urb = usb_alloc_urb(0, mem_flags);
397         if (!urb)
398                 return -ENOMEM;
399
400         buf = kmalloc(size, mem_flags);
401         if (!buf) {
402                 usb_free_urb(urb);
403                 return -ENOMEM;
404         }
405
406         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
407
408         usb_fill_bulk_urb(urb, data->udev, pipe,
409                                         buf, size, btusb_bulk_complete, hdev);
410
411         urb->transfer_flags |= URB_FREE_BUFFER;
412
413         usb_mark_last_busy(data->udev);
414         usb_anchor_urb(urb, &data->bulk_anchor);
415
416         err = usb_submit_urb(urb, mem_flags);
417         if (err < 0) {
418                 if (err != -EPERM && err != -ENODEV)
419                         BT_ERR("%s urb %p submission failed (%d)",
420                                                 hdev->name, urb, -err);
421                 usb_unanchor_urb(urb);
422         }
423
424         usb_free_urb(urb);
425
426         return err;
427 }
428
429 static void btusb_isoc_complete(struct urb *urb)
430 {
431         struct hci_dev *hdev = urb->context;
432         struct btusb_data *data = hci_get_drvdata(hdev);
433         int i, err;
434
435         BT_DBG("%s urb %p status %d count %d", hdev->name,
436                                         urb, urb->status, urb->actual_length);
437
438         if (!test_bit(HCI_RUNNING, &hdev->flags))
439                 return;
440
441         if (urb->status == 0) {
442                 for (i = 0; i < urb->number_of_packets; i++) {
443                         unsigned int offset = urb->iso_frame_desc[i].offset;
444                         unsigned int length = urb->iso_frame_desc[i].actual_length;
445
446                         if (urb->iso_frame_desc[i].status)
447                                 continue;
448
449                         hdev->stat.byte_rx += length;
450
451                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
452                                                 urb->transfer_buffer + offset,
453                                                                 length) < 0) {
454                                 BT_ERR("%s corrupted SCO packet", hdev->name);
455                                 hdev->stat.err_rx++;
456                         }
457                 }
458         }
459
460         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
461                 return;
462
463         usb_anchor_urb(urb, &data->isoc_anchor);
464
465         err = usb_submit_urb(urb, GFP_ATOMIC);
466         if (err < 0) {
467                 /* -EPERM: urb is being killed;
468                  * -ENODEV: device got disconnected */
469                 if (err != -EPERM && err != -ENODEV)
470                         BT_ERR("%s urb %p failed to resubmit (%d)",
471                                                 hdev->name, urb, -err);
472                 usb_unanchor_urb(urb);
473         }
474 }
475
476 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
477 {
478         int i, offset = 0;
479
480         BT_DBG("len %d mtu %d", len, mtu);
481
482         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
483                                         i++, offset += mtu, len -= mtu) {
484                 urb->iso_frame_desc[i].offset = offset;
485                 urb->iso_frame_desc[i].length = mtu;
486         }
487
488         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
489                 urb->iso_frame_desc[i].offset = offset;
490                 urb->iso_frame_desc[i].length = len;
491                 i++;
492         }
493
494         urb->number_of_packets = i;
495 }
496
497 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
498 {
499         struct btusb_data *data = hci_get_drvdata(hdev);
500         struct urb *urb;
501         unsigned char *buf;
502         unsigned int pipe;
503         int err, size;
504
505         BT_DBG("%s", hdev->name);
506
507         if (!data->isoc_rx_ep)
508                 return -ENODEV;
509
510         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
511         if (!urb)
512                 return -ENOMEM;
513
514         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
515                                                 BTUSB_MAX_ISOC_FRAMES;
516
517         buf = kmalloc(size, mem_flags);
518         if (!buf) {
519                 usb_free_urb(urb);
520                 return -ENOMEM;
521         }
522
523         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
524
525         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
526                                 hdev, data->isoc_rx_ep->bInterval);
527
528         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
529
530         __fill_isoc_descriptor(urb, size,
531                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
532
533         usb_anchor_urb(urb, &data->isoc_anchor);
534
535         err = usb_submit_urb(urb, mem_flags);
536         if (err < 0) {
537                 if (err != -EPERM && err != -ENODEV)
538                         BT_ERR("%s urb %p submission failed (%d)",
539                                                 hdev->name, urb, -err);
540                 usb_unanchor_urb(urb);
541         }
542
543         usb_free_urb(urb);
544
545         return err;
546 }
547
548 static void btusb_tx_complete(struct urb *urb)
549 {
550         struct sk_buff *skb = urb->context;
551         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
552         struct btusb_data *data = hci_get_drvdata(hdev);
553
554         BT_DBG("%s urb %p status %d count %d", hdev->name,
555                                         urb, urb->status, urb->actual_length);
556
557         if (!test_bit(HCI_RUNNING, &hdev->flags))
558                 goto done;
559
560         if (!urb->status)
561                 hdev->stat.byte_tx += urb->transfer_buffer_length;
562         else
563                 hdev->stat.err_tx++;
564
565 done:
566         spin_lock(&data->txlock);
567         data->tx_in_flight--;
568         spin_unlock(&data->txlock);
569
570         kfree(urb->setup_packet);
571
572         kfree_skb(skb);
573 }
574
575 static void btusb_isoc_tx_complete(struct urb *urb)
576 {
577         struct sk_buff *skb = urb->context;
578         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
579
580         BT_DBG("%s urb %p status %d count %d", hdev->name,
581                                         urb, urb->status, urb->actual_length);
582
583         if (!test_bit(HCI_RUNNING, &hdev->flags))
584                 goto done;
585
586         if (!urb->status)
587                 hdev->stat.byte_tx += urb->transfer_buffer_length;
588         else
589                 hdev->stat.err_tx++;
590
591 done:
592         kfree(urb->setup_packet);
593
594         kfree_skb(skb);
595 }
596
597 static int btusb_open(struct hci_dev *hdev)
598 {
599         struct btusb_data *data = hci_get_drvdata(hdev);
600         int err;
601
602         BT_DBG("%s", hdev->name);
603
604         err = usb_autopm_get_interface(data->intf);
605         if (err < 0)
606                 return err;
607
608         data->intf->needs_remote_wakeup = 1;
609
610         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
611                 goto done;
612
613         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
614                 goto done;
615
616         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
617         if (err < 0)
618                 goto failed;
619
620         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
621         if (err < 0) {
622                 usb_kill_anchored_urbs(&data->intr_anchor);
623                 goto failed;
624         }
625
626         set_bit(BTUSB_BULK_RUNNING, &data->flags);
627         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
628
629 done:
630         usb_autopm_put_interface(data->intf);
631         return 0;
632
633 failed:
634         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
635         clear_bit(HCI_RUNNING, &hdev->flags);
636         usb_autopm_put_interface(data->intf);
637         return err;
638 }
639
640 static void btusb_stop_traffic(struct btusb_data *data)
641 {
642         usb_kill_anchored_urbs(&data->intr_anchor);
643         usb_kill_anchored_urbs(&data->bulk_anchor);
644         usb_kill_anchored_urbs(&data->isoc_anchor);
645 }
646
647 static int btusb_close(struct hci_dev *hdev)
648 {
649         struct btusb_data *data = hci_get_drvdata(hdev);
650         int err;
651
652         BT_DBG("%s", hdev->name);
653
654         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
655                 return 0;
656
657         cancel_work_sync(&data->work);
658         cancel_work_sync(&data->waker);
659
660         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
661         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
662         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
663
664         btusb_stop_traffic(data);
665         err = usb_autopm_get_interface(data->intf);
666         if (err < 0)
667                 goto failed;
668
669         data->intf->needs_remote_wakeup = 0;
670         usb_autopm_put_interface(data->intf);
671
672 failed:
673         usb_scuttle_anchored_urbs(&data->deferred);
674         return 0;
675 }
676
677 static int btusb_flush(struct hci_dev *hdev)
678 {
679         struct btusb_data *data = hci_get_drvdata(hdev);
680
681         BT_DBG("%s", hdev->name);
682
683         usb_kill_anchored_urbs(&data->tx_anchor);
684
685         return 0;
686 }
687
688 static int btusb_send_frame(struct sk_buff *skb)
689 {
690         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
691         struct btusb_data *data = hci_get_drvdata(hdev);
692         struct usb_ctrlrequest *dr;
693         struct urb *urb;
694         unsigned int pipe;
695         int err;
696
697         BT_DBG("%s", hdev->name);
698
699         if (!test_bit(HCI_RUNNING, &hdev->flags))
700                 return -EBUSY;
701
702         switch (bt_cb(skb)->pkt_type) {
703         case HCI_COMMAND_PKT:
704                 urb = usb_alloc_urb(0, GFP_ATOMIC);
705                 if (!urb)
706                         return -ENOMEM;
707
708                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
709                 if (!dr) {
710                         usb_free_urb(urb);
711                         return -ENOMEM;
712                 }
713
714                 dr->bRequestType = data->cmdreq_type;
715                 dr->bRequest     = 0;
716                 dr->wIndex       = 0;
717                 dr->wValue       = 0;
718                 dr->wLength      = __cpu_to_le16(skb->len);
719
720                 pipe = usb_sndctrlpipe(data->udev, 0x00);
721
722                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
723                                 skb->data, skb->len, btusb_tx_complete, skb);
724
725                 hdev->stat.cmd_tx++;
726                 break;
727
728         case HCI_ACLDATA_PKT:
729                 if (!data->bulk_tx_ep)
730                         return -ENODEV;
731
732                 urb = usb_alloc_urb(0, GFP_ATOMIC);
733                 if (!urb)
734                         return -ENOMEM;
735
736                 pipe = usb_sndbulkpipe(data->udev,
737                                         data->bulk_tx_ep->bEndpointAddress);
738
739                 usb_fill_bulk_urb(urb, data->udev, pipe,
740                                 skb->data, skb->len, btusb_tx_complete, skb);
741
742                 hdev->stat.acl_tx++;
743                 break;
744
745         case HCI_SCODATA_PKT:
746                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
747                         return -ENODEV;
748
749                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
750                 if (!urb)
751                         return -ENOMEM;
752
753                 pipe = usb_sndisocpipe(data->udev,
754                                         data->isoc_tx_ep->bEndpointAddress);
755
756                 usb_fill_int_urb(urb, data->udev, pipe,
757                                 skb->data, skb->len, btusb_isoc_tx_complete,
758                                 skb, data->isoc_tx_ep->bInterval);
759
760                 urb->transfer_flags  = URB_ISO_ASAP;
761
762                 __fill_isoc_descriptor(urb, skb->len,
763                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
764
765                 hdev->stat.sco_tx++;
766                 goto skip_waking;
767
768         default:
769                 return -EILSEQ;
770         }
771
772         err = inc_tx(data);
773         if (err) {
774                 usb_anchor_urb(urb, &data->deferred);
775                 schedule_work(&data->waker);
776                 err = 0;
777                 goto done;
778         }
779
780 skip_waking:
781         usb_anchor_urb(urb, &data->tx_anchor);
782
783         err = usb_submit_urb(urb, GFP_ATOMIC);
784         if (err < 0) {
785                 if (err != -EPERM && err != -ENODEV)
786                         BT_ERR("%s urb %p submission failed (%d)",
787                                                 hdev->name, urb, -err);
788                 kfree(urb->setup_packet);
789                 usb_unanchor_urb(urb);
790         } else {
791                 usb_mark_last_busy(data->udev);
792         }
793
794 done:
795         usb_free_urb(urb);
796         return err;
797 }
798
799 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
800 {
801         struct btusb_data *data = hci_get_drvdata(hdev);
802
803         BT_DBG("%s evt %d", hdev->name, evt);
804
805         if (hdev->conn_hash.sco_num != data->sco_num) {
806                 data->sco_num = hdev->conn_hash.sco_num;
807                 schedule_work(&data->work);
808         }
809 }
810
811 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
812 {
813         struct btusb_data *data = hci_get_drvdata(hdev);
814         struct usb_interface *intf = data->isoc;
815         struct usb_endpoint_descriptor *ep_desc;
816         int i, err;
817
818         if (!data->isoc)
819                 return -ENODEV;
820
821         err = usb_set_interface(data->udev, 1, altsetting);
822         if (err < 0) {
823                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
824                 return err;
825         }
826
827         data->isoc_altsetting = altsetting;
828
829         data->isoc_tx_ep = NULL;
830         data->isoc_rx_ep = NULL;
831
832         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
833                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
834
835                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
836                         data->isoc_tx_ep = ep_desc;
837                         continue;
838                 }
839
840                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
841                         data->isoc_rx_ep = ep_desc;
842                         continue;
843                 }
844         }
845
846         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
847                 BT_ERR("%s invalid SCO descriptors", hdev->name);
848                 return -ENODEV;
849         }
850
851         return 0;
852 }
853
854 static void btusb_work(struct work_struct *work)
855 {
856         struct btusb_data *data = container_of(work, struct btusb_data, work);
857         struct hci_dev *hdev = data->hdev;
858         int new_alts;
859         int err;
860
861         if (hdev->conn_hash.sco_num > 0) {
862                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
863                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
864                         if (err < 0) {
865                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
866                                 usb_kill_anchored_urbs(&data->isoc_anchor);
867                                 return;
868                         }
869
870                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
871                 }
872
873                 if (hdev->voice_setting & 0x0020) {
874                         static const int alts[3] = { 2, 4, 5 };
875                         new_alts = alts[hdev->conn_hash.sco_num - 1];
876                 } else {
877                         new_alts = hdev->conn_hash.sco_num;
878                 }
879
880                 if (data->isoc_altsetting != new_alts) {
881                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
882                         usb_kill_anchored_urbs(&data->isoc_anchor);
883
884                         if (__set_isoc_interface(hdev, new_alts) < 0)
885                                 return;
886                 }
887
888                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
889                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
890                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
891                         else
892                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
893                 }
894         } else {
895                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
896                 usb_kill_anchored_urbs(&data->isoc_anchor);
897
898                 __set_isoc_interface(hdev, 0);
899                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
900                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
901         }
902 }
903
904 static void btusb_waker(struct work_struct *work)
905 {
906         struct btusb_data *data = container_of(work, struct btusb_data, waker);
907         int err;
908
909         err = usb_autopm_get_interface(data->intf);
910         if (err < 0)
911                 return;
912
913         usb_autopm_put_interface(data->intf);
914 }
915
916 static int btusb_probe(struct usb_interface *intf,
917                                 const struct usb_device_id *id)
918 {
919         struct usb_endpoint_descriptor *ep_desc;
920         struct btusb_data *data;
921         struct hci_dev *hdev;
922         int i, err;
923
924         BT_DBG("intf %p id %p", intf, id);
925
926         /* interface numbers are hardcoded in the spec */
927         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
928                 return -ENODEV;
929
930         if (!id->driver_info) {
931                 const struct usb_device_id *match;
932                 match = usb_match_id(intf, blacklist_table);
933                 if (match)
934                         id = match;
935         }
936
937         if (id->driver_info == BTUSB_IGNORE)
938                 return -ENODEV;
939
940         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
941                 return -ENODEV;
942
943         if (ignore_csr && id->driver_info & BTUSB_CSR)
944                 return -ENODEV;
945
946         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
947                 return -ENODEV;
948
949         if (id->driver_info & BTUSB_ATH3012) {
950                 struct usb_device *udev = interface_to_usbdev(intf);
951
952                 /* Old firmware would otherwise let ath3k driver load
953                  * patch and sysconfig files */
954                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
955                         return -ENODEV;
956         }
957
958         data = kzalloc(sizeof(*data), GFP_KERNEL);
959         if (!data)
960                 return -ENOMEM;
961
962         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
963                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
964
965                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
966                         data->intr_ep = ep_desc;
967                         continue;
968                 }
969
970                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
971                         data->bulk_tx_ep = ep_desc;
972                         continue;
973                 }
974
975                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
976                         data->bulk_rx_ep = ep_desc;
977                         continue;
978                 }
979         }
980
981         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
982                 kfree(data);
983                 return -ENODEV;
984         }
985
986         data->cmdreq_type = USB_TYPE_CLASS;
987
988         data->udev = interface_to_usbdev(intf);
989         data->intf = intf;
990
991         spin_lock_init(&data->lock);
992
993         INIT_WORK(&data->work, btusb_work);
994         INIT_WORK(&data->waker, btusb_waker);
995         spin_lock_init(&data->txlock);
996
997         init_usb_anchor(&data->tx_anchor);
998         init_usb_anchor(&data->intr_anchor);
999         init_usb_anchor(&data->bulk_anchor);
1000         init_usb_anchor(&data->isoc_anchor);
1001         init_usb_anchor(&data->deferred);
1002
1003         hdev = hci_alloc_dev();
1004         if (!hdev) {
1005                 kfree(data);
1006                 return -ENOMEM;
1007         }
1008
1009         hdev->bus = HCI_USB;
1010         hci_set_drvdata(hdev, data);
1011
1012         data->hdev = hdev;
1013
1014         SET_HCIDEV_DEV(hdev, &intf->dev);
1015
1016         hdev->open     = btusb_open;
1017         hdev->close    = btusb_close;
1018         hdev->flush    = btusb_flush;
1019         hdev->send     = btusb_send_frame;
1020         hdev->notify   = btusb_notify;
1021
1022         /* Interface numbers are hardcoded in the specification */
1023         data->isoc = usb_ifnum_to_if(data->udev, 1);
1024
1025         if (!reset)
1026                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1027
1028         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1029                 if (!disable_scofix)
1030                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1031         }
1032
1033         if (id->driver_info & BTUSB_BROKEN_ISOC)
1034                 data->isoc = NULL;
1035
1036         if (id->driver_info & BTUSB_DIGIANSWER) {
1037                 data->cmdreq_type = USB_TYPE_VENDOR;
1038                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1039         }
1040
1041         if (id->driver_info & BTUSB_CSR) {
1042                 struct usb_device *udev = data->udev;
1043
1044                 /* Old firmware would otherwise execute USB reset */
1045                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1046                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1047         }
1048
1049         if (id->driver_info & BTUSB_SNIFFER) {
1050                 struct usb_device *udev = data->udev;
1051
1052                 /* New sniffer firmware has crippled HCI interface */
1053                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1054                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1055
1056                 data->isoc = NULL;
1057         }
1058
1059         if (id->driver_info & BTUSB_BCM92035) {
1060                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1061                 struct sk_buff *skb;
1062
1063                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1064                 if (skb) {
1065                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1066                         skb_queue_tail(&hdev->driver_init, skb);
1067                 }
1068         }
1069
1070         if (data->isoc) {
1071                 err = usb_driver_claim_interface(&btusb_driver,
1072                                                         data->isoc, data);
1073                 if (err < 0) {
1074                         hci_free_dev(hdev);
1075                         kfree(data);
1076                         return err;
1077                 }
1078         }
1079
1080         err = hci_register_dev(hdev);
1081         if (err < 0) {
1082                 hci_free_dev(hdev);
1083                 kfree(data);
1084                 return err;
1085         }
1086
1087         usb_set_intfdata(intf, data);
1088
1089         return 0;
1090 }
1091
1092 static void btusb_disconnect(struct usb_interface *intf)
1093 {
1094         struct btusb_data *data = usb_get_intfdata(intf);
1095         struct hci_dev *hdev;
1096
1097         BT_DBG("intf %p", intf);
1098
1099         if (!data)
1100                 return;
1101
1102         hdev = data->hdev;
1103         usb_set_intfdata(data->intf, NULL);
1104
1105         if (data->isoc)
1106                 usb_set_intfdata(data->isoc, NULL);
1107
1108         hci_unregister_dev(hdev);
1109
1110         if (intf == data->isoc)
1111                 usb_driver_release_interface(&btusb_driver, data->intf);
1112         else if (data->isoc)
1113                 usb_driver_release_interface(&btusb_driver, data->isoc);
1114
1115         hci_free_dev(hdev);
1116         kfree(data);
1117 }
1118
1119 #ifdef CONFIG_PM
1120 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1121 {
1122         struct btusb_data *data = usb_get_intfdata(intf);
1123
1124         BT_DBG("intf %p", intf);
1125
1126         if (data->suspend_count++)
1127                 return 0;
1128
1129         spin_lock_irq(&data->txlock);
1130         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1131                 set_bit(BTUSB_SUSPENDING, &data->flags);
1132                 spin_unlock_irq(&data->txlock);
1133         } else {
1134                 spin_unlock_irq(&data->txlock);
1135                 data->suspend_count--;
1136                 return -EBUSY;
1137         }
1138
1139         cancel_work_sync(&data->work);
1140
1141         btusb_stop_traffic(data);
1142         usb_kill_anchored_urbs(&data->tx_anchor);
1143
1144         return 0;
1145 }
1146
1147 static void play_deferred(struct btusb_data *data)
1148 {
1149         struct urb *urb;
1150         int err;
1151
1152         while ((urb = usb_get_from_anchor(&data->deferred))) {
1153                 err = usb_submit_urb(urb, GFP_ATOMIC);
1154                 if (err < 0)
1155                         break;
1156
1157                 data->tx_in_flight++;
1158         }
1159         usb_scuttle_anchored_urbs(&data->deferred);
1160 }
1161
1162 static int btusb_resume(struct usb_interface *intf)
1163 {
1164         struct btusb_data *data = usb_get_intfdata(intf);
1165         struct hci_dev *hdev = data->hdev;
1166         int err = 0;
1167
1168         BT_DBG("intf %p", intf);
1169
1170         if (--data->suspend_count)
1171                 return 0;
1172
1173         if (!test_bit(HCI_RUNNING, &hdev->flags))
1174                 goto done;
1175
1176         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1177                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1178                 if (err < 0) {
1179                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1180                         goto failed;
1181                 }
1182         }
1183
1184         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1185                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1186                 if (err < 0) {
1187                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1188                         goto failed;
1189                 }
1190
1191                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1192         }
1193
1194         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1195                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1196                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1197                 else
1198                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1199         }
1200
1201         spin_lock_irq(&data->txlock);
1202         play_deferred(data);
1203         clear_bit(BTUSB_SUSPENDING, &data->flags);
1204         spin_unlock_irq(&data->txlock);
1205         schedule_work(&data->work);
1206
1207         return 0;
1208
1209 failed:
1210         usb_scuttle_anchored_urbs(&data->deferred);
1211 done:
1212         spin_lock_irq(&data->txlock);
1213         clear_bit(BTUSB_SUSPENDING, &data->flags);
1214         spin_unlock_irq(&data->txlock);
1215
1216         return err;
1217 }
1218 #endif
1219
1220 static struct usb_driver btusb_driver = {
1221         .name           = "btusb",
1222         .probe          = btusb_probe,
1223         .disconnect     = btusb_disconnect,
1224 #ifdef CONFIG_PM
1225         .suspend        = btusb_suspend,
1226         .resume         = btusb_resume,
1227 #endif
1228         .id_table       = btusb_table,
1229         .supports_autosuspend = 1,
1230         .disable_hub_initiated_lpm = 1,
1231 };
1232
1233 module_usb_driver(btusb_driver);
1234
1235 module_param(ignore_dga, bool, 0644);
1236 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1237
1238 module_param(ignore_csr, bool, 0644);
1239 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1240
1241 module_param(ignore_sniffer, bool, 0644);
1242 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1243
1244 module_param(disable_scofix, bool, 0644);
1245 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1246
1247 module_param(force_scofix, bool, 0644);
1248 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1249
1250 module_param(reset, bool, 0644);
1251 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1252
1253 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1254 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1255 MODULE_VERSION(VERSION);
1256 MODULE_LICENSE("GPL");