Bluetooth: Add support for Foxconn / Hon Hai [0489:e056]
[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(0x0b05, 0x17b5) },
100         { USB_DEVICE(0x04ca, 0x2003) },
101         { USB_DEVICE(0x0489, 0xe042) },
102         { USB_DEVICE(0x413c, 0x8197) },
103
104         /* Foxconn - Hon Hai */
105         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
106
107         /*Broadcom devices with vendor specific id */
108         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
109
110         { }     /* Terminating entry */
111 };
112
113 MODULE_DEVICE_TABLE(usb, btusb_table);
114
115 static struct usb_device_id blacklist_table[] = {
116         /* CSR BlueCore devices */
117         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
118
119         /* Broadcom BCM2033 without firmware */
120         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
121
122         /* Atheros 3011 with sflash firmware */
123         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
124         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
125         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
126         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
127         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
128         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
129
130         /* Atheros AR9285 Malbec with sflash firmware */
131         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
132
133         /* Atheros 3012 with sflash firmware */
134         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
135         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
136         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
137         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
138         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
139         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
140         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
141         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
142         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
143         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
144         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
145         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
146
147         /* Atheros AR5BBU12 with sflash firmware */
148         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
149
150         /* Atheros AR5BBU12 with sflash firmware */
151         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
152         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
153
154         /* Broadcom BCM2035 */
155         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
156         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
157         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
158
159         /* Broadcom BCM2045 */
160         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
161         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
162
163         /* IBM/Lenovo ThinkPad with Broadcom chip */
164         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
165         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
166
167         /* HP laptop with Broadcom chip */
168         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
169
170         /* Dell laptop with Broadcom chip */
171         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
172
173         /* Dell Wireless 370 and 410 devices */
174         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
175         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
176
177         /* Belkin F8T012 and F8T013 devices */
178         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
179         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
180
181         /* Asus WL-BTD202 device */
182         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
183
184         /* Kensington Bluetooth USB adapter */
185         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
186
187         /* RTX Telecom based adapters with buggy SCO support */
188         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
189         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
190
191         /* CONWISE Technology based adapters with buggy SCO support */
192         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
193
194         /* Digianswer devices */
195         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
196         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
197
198         /* CSR BlueCore Bluetooth Sniffer */
199         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
200
201         /* Frontline ComProbe Bluetooth Sniffer */
202         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
203
204         { }     /* Terminating entry */
205 };
206
207 #define BTUSB_MAX_ISOC_FRAMES   10
208
209 #define BTUSB_INTR_RUNNING      0
210 #define BTUSB_BULK_RUNNING      1
211 #define BTUSB_ISOC_RUNNING      2
212 #define BTUSB_SUSPENDING        3
213 #define BTUSB_DID_ISO_RESUME    4
214
215 struct btusb_data {
216         struct hci_dev       *hdev;
217         struct usb_device    *udev;
218         struct usb_interface *intf;
219         struct usb_interface *isoc;
220
221         spinlock_t lock;
222
223         unsigned long flags;
224
225         struct work_struct work;
226         struct work_struct waker;
227
228         struct usb_anchor tx_anchor;
229         struct usb_anchor intr_anchor;
230         struct usb_anchor bulk_anchor;
231         struct usb_anchor isoc_anchor;
232         struct usb_anchor deferred;
233         int tx_in_flight;
234         spinlock_t txlock;
235
236         struct usb_endpoint_descriptor *intr_ep;
237         struct usb_endpoint_descriptor *bulk_tx_ep;
238         struct usb_endpoint_descriptor *bulk_rx_ep;
239         struct usb_endpoint_descriptor *isoc_tx_ep;
240         struct usb_endpoint_descriptor *isoc_rx_ep;
241
242         __u8 cmdreq_type;
243
244         unsigned int sco_num;
245         int isoc_altsetting;
246         int suspend_count;
247 };
248
249 static int inc_tx(struct btusb_data *data)
250 {
251         unsigned long flags;
252         int rv;
253
254         spin_lock_irqsave(&data->txlock, flags);
255         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
256         if (!rv)
257                 data->tx_in_flight++;
258         spin_unlock_irqrestore(&data->txlock, flags);
259
260         return rv;
261 }
262
263 static void btusb_intr_complete(struct urb *urb)
264 {
265         struct hci_dev *hdev = urb->context;
266         struct btusb_data *data = hci_get_drvdata(hdev);
267         int err;
268
269         BT_DBG("%s urb %p status %d count %d", hdev->name,
270                                         urb, urb->status, urb->actual_length);
271
272         if (!test_bit(HCI_RUNNING, &hdev->flags))
273                 return;
274
275         if (urb->status == 0) {
276                 hdev->stat.byte_rx += urb->actual_length;
277
278                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
279                                                 urb->transfer_buffer,
280                                                 urb->actual_length) < 0) {
281                         BT_ERR("%s corrupted event packet", hdev->name);
282                         hdev->stat.err_rx++;
283                 }
284         }
285
286         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
287                 return;
288
289         usb_mark_last_busy(data->udev);
290         usb_anchor_urb(urb, &data->intr_anchor);
291
292         err = usb_submit_urb(urb, GFP_ATOMIC);
293         if (err < 0) {
294                 /* -EPERM: urb is being killed;
295                  * -ENODEV: device got disconnected */
296                 if (err != -EPERM && err != -ENODEV)
297                         BT_ERR("%s urb %p failed to resubmit (%d)",
298                                                 hdev->name, urb, -err);
299                 usb_unanchor_urb(urb);
300         }
301 }
302
303 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
304 {
305         struct btusb_data *data = hci_get_drvdata(hdev);
306         struct urb *urb;
307         unsigned char *buf;
308         unsigned int pipe;
309         int err, size;
310
311         BT_DBG("%s", hdev->name);
312
313         if (!data->intr_ep)
314                 return -ENODEV;
315
316         urb = usb_alloc_urb(0, mem_flags);
317         if (!urb)
318                 return -ENOMEM;
319
320         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
321
322         buf = kmalloc(size, mem_flags);
323         if (!buf) {
324                 usb_free_urb(urb);
325                 return -ENOMEM;
326         }
327
328         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
329
330         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
331                                                 btusb_intr_complete, hdev,
332                                                 data->intr_ep->bInterval);
333
334         urb->transfer_flags |= URB_FREE_BUFFER;
335
336         usb_anchor_urb(urb, &data->intr_anchor);
337
338         err = usb_submit_urb(urb, mem_flags);
339         if (err < 0) {
340                 if (err != -EPERM && err != -ENODEV)
341                         BT_ERR("%s urb %p submission failed (%d)",
342                                                 hdev->name, urb, -err);
343                 usb_unanchor_urb(urb);
344         }
345
346         usb_free_urb(urb);
347
348         return err;
349 }
350
351 static void btusb_bulk_complete(struct urb *urb)
352 {
353         struct hci_dev *hdev = urb->context;
354         struct btusb_data *data = hci_get_drvdata(hdev);
355         int err;
356
357         BT_DBG("%s urb %p status %d count %d", hdev->name,
358                                         urb, urb->status, urb->actual_length);
359
360         if (!test_bit(HCI_RUNNING, &hdev->flags))
361                 return;
362
363         if (urb->status == 0) {
364                 hdev->stat.byte_rx += urb->actual_length;
365
366                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
367                                                 urb->transfer_buffer,
368                                                 urb->actual_length) < 0) {
369                         BT_ERR("%s corrupted ACL packet", hdev->name);
370                         hdev->stat.err_rx++;
371                 }
372         }
373
374         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
375                 return;
376
377         usb_anchor_urb(urb, &data->bulk_anchor);
378         usb_mark_last_busy(data->udev);
379
380         err = usb_submit_urb(urb, GFP_ATOMIC);
381         if (err < 0) {
382                 /* -EPERM: urb is being killed;
383                  * -ENODEV: device got disconnected */
384                 if (err != -EPERM && err != -ENODEV)
385                         BT_ERR("%s urb %p failed to resubmit (%d)",
386                                                 hdev->name, urb, -err);
387                 usb_unanchor_urb(urb);
388         }
389 }
390
391 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
392 {
393         struct btusb_data *data = hci_get_drvdata(hdev);
394         struct urb *urb;
395         unsigned char *buf;
396         unsigned int pipe;
397         int err, size = HCI_MAX_FRAME_SIZE;
398
399         BT_DBG("%s", hdev->name);
400
401         if (!data->bulk_rx_ep)
402                 return -ENODEV;
403
404         urb = usb_alloc_urb(0, mem_flags);
405         if (!urb)
406                 return -ENOMEM;
407
408         buf = kmalloc(size, mem_flags);
409         if (!buf) {
410                 usb_free_urb(urb);
411                 return -ENOMEM;
412         }
413
414         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
415
416         usb_fill_bulk_urb(urb, data->udev, pipe,
417                                         buf, size, btusb_bulk_complete, hdev);
418
419         urb->transfer_flags |= URB_FREE_BUFFER;
420
421         usb_mark_last_busy(data->udev);
422         usb_anchor_urb(urb, &data->bulk_anchor);
423
424         err = usb_submit_urb(urb, mem_flags);
425         if (err < 0) {
426                 if (err != -EPERM && err != -ENODEV)
427                         BT_ERR("%s urb %p submission failed (%d)",
428                                                 hdev->name, urb, -err);
429                 usb_unanchor_urb(urb);
430         }
431
432         usb_free_urb(urb);
433
434         return err;
435 }
436
437 static void btusb_isoc_complete(struct urb *urb)
438 {
439         struct hci_dev *hdev = urb->context;
440         struct btusb_data *data = hci_get_drvdata(hdev);
441         int i, err;
442
443         BT_DBG("%s urb %p status %d count %d", hdev->name,
444                                         urb, urb->status, urb->actual_length);
445
446         if (!test_bit(HCI_RUNNING, &hdev->flags))
447                 return;
448
449         if (urb->status == 0) {
450                 for (i = 0; i < urb->number_of_packets; i++) {
451                         unsigned int offset = urb->iso_frame_desc[i].offset;
452                         unsigned int length = urb->iso_frame_desc[i].actual_length;
453
454                         if (urb->iso_frame_desc[i].status)
455                                 continue;
456
457                         hdev->stat.byte_rx += length;
458
459                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
460                                                 urb->transfer_buffer + offset,
461                                                                 length) < 0) {
462                                 BT_ERR("%s corrupted SCO packet", hdev->name);
463                                 hdev->stat.err_rx++;
464                         }
465                 }
466         }
467
468         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
469                 return;
470
471         usb_anchor_urb(urb, &data->isoc_anchor);
472
473         err = usb_submit_urb(urb, GFP_ATOMIC);
474         if (err < 0) {
475                 /* -EPERM: urb is being killed;
476                  * -ENODEV: device got disconnected */
477                 if (err != -EPERM && err != -ENODEV)
478                         BT_ERR("%s urb %p failed to resubmit (%d)",
479                                                 hdev->name, urb, -err);
480                 usb_unanchor_urb(urb);
481         }
482 }
483
484 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
485 {
486         int i, offset = 0;
487
488         BT_DBG("len %d mtu %d", len, mtu);
489
490         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
491                                         i++, offset += mtu, len -= mtu) {
492                 urb->iso_frame_desc[i].offset = offset;
493                 urb->iso_frame_desc[i].length = mtu;
494         }
495
496         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
497                 urb->iso_frame_desc[i].offset = offset;
498                 urb->iso_frame_desc[i].length = len;
499                 i++;
500         }
501
502         urb->number_of_packets = i;
503 }
504
505 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
506 {
507         struct btusb_data *data = hci_get_drvdata(hdev);
508         struct urb *urb;
509         unsigned char *buf;
510         unsigned int pipe;
511         int err, size;
512
513         BT_DBG("%s", hdev->name);
514
515         if (!data->isoc_rx_ep)
516                 return -ENODEV;
517
518         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
519         if (!urb)
520                 return -ENOMEM;
521
522         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
523                                                 BTUSB_MAX_ISOC_FRAMES;
524
525         buf = kmalloc(size, mem_flags);
526         if (!buf) {
527                 usb_free_urb(urb);
528                 return -ENOMEM;
529         }
530
531         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
532
533         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
534                                 hdev, data->isoc_rx_ep->bInterval);
535
536         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
537
538         __fill_isoc_descriptor(urb, size,
539                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
540
541         usb_anchor_urb(urb, &data->isoc_anchor);
542
543         err = usb_submit_urb(urb, mem_flags);
544         if (err < 0) {
545                 if (err != -EPERM && err != -ENODEV)
546                         BT_ERR("%s urb %p submission failed (%d)",
547                                                 hdev->name, urb, -err);
548                 usb_unanchor_urb(urb);
549         }
550
551         usb_free_urb(urb);
552
553         return err;
554 }
555
556 static void btusb_tx_complete(struct urb *urb)
557 {
558         struct sk_buff *skb = urb->context;
559         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
560         struct btusb_data *data = hci_get_drvdata(hdev);
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         spin_lock(&data->txlock);
575         data->tx_in_flight--;
576         spin_unlock(&data->txlock);
577
578         kfree(urb->setup_packet);
579
580         kfree_skb(skb);
581 }
582
583 static void btusb_isoc_tx_complete(struct urb *urb)
584 {
585         struct sk_buff *skb = urb->context;
586         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
587
588         BT_DBG("%s urb %p status %d count %d", hdev->name,
589                                         urb, urb->status, urb->actual_length);
590
591         if (!test_bit(HCI_RUNNING, &hdev->flags))
592                 goto done;
593
594         if (!urb->status)
595                 hdev->stat.byte_tx += urb->transfer_buffer_length;
596         else
597                 hdev->stat.err_tx++;
598
599 done:
600         kfree(urb->setup_packet);
601
602         kfree_skb(skb);
603 }
604
605 static int btusb_open(struct hci_dev *hdev)
606 {
607         struct btusb_data *data = hci_get_drvdata(hdev);
608         int err;
609
610         BT_DBG("%s", hdev->name);
611
612         err = usb_autopm_get_interface(data->intf);
613         if (err < 0)
614                 return err;
615
616         data->intf->needs_remote_wakeup = 1;
617
618         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
619                 goto done;
620
621         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
622                 goto done;
623
624         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
625         if (err < 0)
626                 goto failed;
627
628         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
629         if (err < 0) {
630                 usb_kill_anchored_urbs(&data->intr_anchor);
631                 goto failed;
632         }
633
634         set_bit(BTUSB_BULK_RUNNING, &data->flags);
635         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
636
637 done:
638         usb_autopm_put_interface(data->intf);
639         return 0;
640
641 failed:
642         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
643         clear_bit(HCI_RUNNING, &hdev->flags);
644         usb_autopm_put_interface(data->intf);
645         return err;
646 }
647
648 static void btusb_stop_traffic(struct btusb_data *data)
649 {
650         usb_kill_anchored_urbs(&data->intr_anchor);
651         usb_kill_anchored_urbs(&data->bulk_anchor);
652         usb_kill_anchored_urbs(&data->isoc_anchor);
653 }
654
655 static int btusb_close(struct hci_dev *hdev)
656 {
657         struct btusb_data *data = hci_get_drvdata(hdev);
658         int err;
659
660         BT_DBG("%s", hdev->name);
661
662         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
663                 return 0;
664
665         cancel_work_sync(&data->work);
666         cancel_work_sync(&data->waker);
667
668         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
669         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
670         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
671
672         btusb_stop_traffic(data);
673         err = usb_autopm_get_interface(data->intf);
674         if (err < 0)
675                 goto failed;
676
677         data->intf->needs_remote_wakeup = 0;
678         usb_autopm_put_interface(data->intf);
679
680 failed:
681         usb_scuttle_anchored_urbs(&data->deferred);
682         return 0;
683 }
684
685 static int btusb_flush(struct hci_dev *hdev)
686 {
687         struct btusb_data *data = hci_get_drvdata(hdev);
688
689         BT_DBG("%s", hdev->name);
690
691         usb_kill_anchored_urbs(&data->tx_anchor);
692
693         return 0;
694 }
695
696 static int btusb_send_frame(struct sk_buff *skb)
697 {
698         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
699         struct btusb_data *data = hci_get_drvdata(hdev);
700         struct usb_ctrlrequest *dr;
701         struct urb *urb;
702         unsigned int pipe;
703         int err;
704
705         BT_DBG("%s", hdev->name);
706
707         if (!test_bit(HCI_RUNNING, &hdev->flags))
708                 return -EBUSY;
709
710         switch (bt_cb(skb)->pkt_type) {
711         case HCI_COMMAND_PKT:
712                 urb = usb_alloc_urb(0, GFP_ATOMIC);
713                 if (!urb)
714                         return -ENOMEM;
715
716                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
717                 if (!dr) {
718                         usb_free_urb(urb);
719                         return -ENOMEM;
720                 }
721
722                 dr->bRequestType = data->cmdreq_type;
723                 dr->bRequest     = 0;
724                 dr->wIndex       = 0;
725                 dr->wValue       = 0;
726                 dr->wLength      = __cpu_to_le16(skb->len);
727
728                 pipe = usb_sndctrlpipe(data->udev, 0x00);
729
730                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
731                                 skb->data, skb->len, btusb_tx_complete, skb);
732
733                 hdev->stat.cmd_tx++;
734                 break;
735
736         case HCI_ACLDATA_PKT:
737                 if (!data->bulk_tx_ep)
738                         return -ENODEV;
739
740                 urb = usb_alloc_urb(0, GFP_ATOMIC);
741                 if (!urb)
742                         return -ENOMEM;
743
744                 pipe = usb_sndbulkpipe(data->udev,
745                                         data->bulk_tx_ep->bEndpointAddress);
746
747                 usb_fill_bulk_urb(urb, data->udev, pipe,
748                                 skb->data, skb->len, btusb_tx_complete, skb);
749
750                 hdev->stat.acl_tx++;
751                 break;
752
753         case HCI_SCODATA_PKT:
754                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
755                         return -ENODEV;
756
757                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
758                 if (!urb)
759                         return -ENOMEM;
760
761                 pipe = usb_sndisocpipe(data->udev,
762                                         data->isoc_tx_ep->bEndpointAddress);
763
764                 usb_fill_int_urb(urb, data->udev, pipe,
765                                 skb->data, skb->len, btusb_isoc_tx_complete,
766                                 skb, data->isoc_tx_ep->bInterval);
767
768                 urb->transfer_flags  = URB_ISO_ASAP;
769
770                 __fill_isoc_descriptor(urb, skb->len,
771                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
772
773                 hdev->stat.sco_tx++;
774                 goto skip_waking;
775
776         default:
777                 return -EILSEQ;
778         }
779
780         err = inc_tx(data);
781         if (err) {
782                 usb_anchor_urb(urb, &data->deferred);
783                 schedule_work(&data->waker);
784                 err = 0;
785                 goto done;
786         }
787
788 skip_waking:
789         usb_anchor_urb(urb, &data->tx_anchor);
790
791         err = usb_submit_urb(urb, GFP_ATOMIC);
792         if (err < 0) {
793                 if (err != -EPERM && err != -ENODEV)
794                         BT_ERR("%s urb %p submission failed (%d)",
795                                                 hdev->name, urb, -err);
796                 kfree(urb->setup_packet);
797                 usb_unanchor_urb(urb);
798         } else {
799                 usb_mark_last_busy(data->udev);
800         }
801
802 done:
803         usb_free_urb(urb);
804         return err;
805 }
806
807 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
808 {
809         struct btusb_data *data = hci_get_drvdata(hdev);
810
811         BT_DBG("%s evt %d", hdev->name, evt);
812
813         if (hdev->conn_hash.sco_num != data->sco_num) {
814                 data->sco_num = hdev->conn_hash.sco_num;
815                 schedule_work(&data->work);
816         }
817 }
818
819 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
820 {
821         struct btusb_data *data = hci_get_drvdata(hdev);
822         struct usb_interface *intf = data->isoc;
823         struct usb_endpoint_descriptor *ep_desc;
824         int i, err;
825
826         if (!data->isoc)
827                 return -ENODEV;
828
829         err = usb_set_interface(data->udev, 1, altsetting);
830         if (err < 0) {
831                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
832                 return err;
833         }
834
835         data->isoc_altsetting = altsetting;
836
837         data->isoc_tx_ep = NULL;
838         data->isoc_rx_ep = NULL;
839
840         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
841                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
842
843                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
844                         data->isoc_tx_ep = ep_desc;
845                         continue;
846                 }
847
848                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
849                         data->isoc_rx_ep = ep_desc;
850                         continue;
851                 }
852         }
853
854         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
855                 BT_ERR("%s invalid SCO descriptors", hdev->name);
856                 return -ENODEV;
857         }
858
859         return 0;
860 }
861
862 static void btusb_work(struct work_struct *work)
863 {
864         struct btusb_data *data = container_of(work, struct btusb_data, work);
865         struct hci_dev *hdev = data->hdev;
866         int new_alts;
867         int err;
868
869         if (hdev->conn_hash.sco_num > 0) {
870                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
871                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
872                         if (err < 0) {
873                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
874                                 usb_kill_anchored_urbs(&data->isoc_anchor);
875                                 return;
876                         }
877
878                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
879                 }
880
881                 if (hdev->voice_setting & 0x0020) {
882                         static const int alts[3] = { 2, 4, 5 };
883                         new_alts = alts[hdev->conn_hash.sco_num - 1];
884                 } else {
885                         new_alts = hdev->conn_hash.sco_num;
886                 }
887
888                 if (data->isoc_altsetting != new_alts) {
889                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
890                         usb_kill_anchored_urbs(&data->isoc_anchor);
891
892                         if (__set_isoc_interface(hdev, new_alts) < 0)
893                                 return;
894                 }
895
896                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
897                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
898                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
899                         else
900                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
901                 }
902         } else {
903                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
904                 usb_kill_anchored_urbs(&data->isoc_anchor);
905
906                 __set_isoc_interface(hdev, 0);
907                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
908                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
909         }
910 }
911
912 static void btusb_waker(struct work_struct *work)
913 {
914         struct btusb_data *data = container_of(work, struct btusb_data, waker);
915         int err;
916
917         err = usb_autopm_get_interface(data->intf);
918         if (err < 0)
919                 return;
920
921         usb_autopm_put_interface(data->intf);
922 }
923
924 static int btusb_probe(struct usb_interface *intf,
925                                 const struct usb_device_id *id)
926 {
927         struct usb_endpoint_descriptor *ep_desc;
928         struct btusb_data *data;
929         struct hci_dev *hdev;
930         int i, err;
931
932         BT_DBG("intf %p id %p", intf, id);
933
934         /* interface numbers are hardcoded in the spec */
935         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
936                 return -ENODEV;
937
938         if (!id->driver_info) {
939                 const struct usb_device_id *match;
940                 match = usb_match_id(intf, blacklist_table);
941                 if (match)
942                         id = match;
943         }
944
945         if (id->driver_info == BTUSB_IGNORE)
946                 return -ENODEV;
947
948         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
949                 return -ENODEV;
950
951         if (ignore_csr && id->driver_info & BTUSB_CSR)
952                 return -ENODEV;
953
954         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
955                 return -ENODEV;
956
957         if (id->driver_info & BTUSB_ATH3012) {
958                 struct usb_device *udev = interface_to_usbdev(intf);
959
960                 /* Old firmware would otherwise let ath3k driver load
961                  * patch and sysconfig files */
962                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
963                         return -ENODEV;
964         }
965
966         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
967         if (!data)
968                 return -ENOMEM;
969
970         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
971                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
972
973                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
974                         data->intr_ep = ep_desc;
975                         continue;
976                 }
977
978                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
979                         data->bulk_tx_ep = ep_desc;
980                         continue;
981                 }
982
983                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
984                         data->bulk_rx_ep = ep_desc;
985                         continue;
986                 }
987         }
988
989         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
990                 return -ENODEV;
991
992         data->cmdreq_type = USB_TYPE_CLASS;
993
994         data->udev = interface_to_usbdev(intf);
995         data->intf = intf;
996
997         spin_lock_init(&data->lock);
998
999         INIT_WORK(&data->work, btusb_work);
1000         INIT_WORK(&data->waker, btusb_waker);
1001         spin_lock_init(&data->txlock);
1002
1003         init_usb_anchor(&data->tx_anchor);
1004         init_usb_anchor(&data->intr_anchor);
1005         init_usb_anchor(&data->bulk_anchor);
1006         init_usb_anchor(&data->isoc_anchor);
1007         init_usb_anchor(&data->deferred);
1008
1009         hdev = hci_alloc_dev();
1010         if (!hdev)
1011                 return -ENOMEM;
1012
1013         hdev->bus = HCI_USB;
1014         hci_set_drvdata(hdev, data);
1015
1016         data->hdev = hdev;
1017
1018         SET_HCIDEV_DEV(hdev, &intf->dev);
1019
1020         hdev->open     = btusb_open;
1021         hdev->close    = btusb_close;
1022         hdev->flush    = btusb_flush;
1023         hdev->send     = btusb_send_frame;
1024         hdev->notify   = btusb_notify;
1025
1026         /* Interface numbers are hardcoded in the specification */
1027         data->isoc = usb_ifnum_to_if(data->udev, 1);
1028
1029         if (!reset)
1030                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1031
1032         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1033                 if (!disable_scofix)
1034                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1035         }
1036
1037         if (id->driver_info & BTUSB_BROKEN_ISOC)
1038                 data->isoc = NULL;
1039
1040         if (id->driver_info & BTUSB_DIGIANSWER) {
1041                 data->cmdreq_type = USB_TYPE_VENDOR;
1042                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1043         }
1044
1045         if (id->driver_info & BTUSB_CSR) {
1046                 struct usb_device *udev = data->udev;
1047
1048                 /* Old firmware would otherwise execute USB reset */
1049                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1050                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1051         }
1052
1053         if (id->driver_info & BTUSB_SNIFFER) {
1054                 struct usb_device *udev = data->udev;
1055
1056                 /* New sniffer firmware has crippled HCI interface */
1057                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1058                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1059
1060                 data->isoc = NULL;
1061         }
1062
1063         if (id->driver_info & BTUSB_BCM92035) {
1064                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1065                 struct sk_buff *skb;
1066
1067                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1068                 if (skb) {
1069                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1070                         skb_queue_tail(&hdev->driver_init, skb);
1071                 }
1072         }
1073
1074         if (data->isoc) {
1075                 err = usb_driver_claim_interface(&btusb_driver,
1076                                                         data->isoc, data);
1077                 if (err < 0) {
1078                         hci_free_dev(hdev);
1079                         return err;
1080                 }
1081         }
1082
1083         err = hci_register_dev(hdev);
1084         if (err < 0) {
1085                 hci_free_dev(hdev);
1086                 return err;
1087         }
1088
1089         usb_set_intfdata(intf, data);
1090
1091         return 0;
1092 }
1093
1094 static void btusb_disconnect(struct usb_interface *intf)
1095 {
1096         struct btusb_data *data = usb_get_intfdata(intf);
1097         struct hci_dev *hdev;
1098
1099         BT_DBG("intf %p", intf);
1100
1101         if (!data)
1102                 return;
1103
1104         hdev = data->hdev;
1105         usb_set_intfdata(data->intf, NULL);
1106
1107         if (data->isoc)
1108                 usb_set_intfdata(data->isoc, NULL);
1109
1110         hci_unregister_dev(hdev);
1111
1112         if (intf == data->isoc)
1113                 usb_driver_release_interface(&btusb_driver, data->intf);
1114         else if (data->isoc)
1115                 usb_driver_release_interface(&btusb_driver, data->isoc);
1116
1117         hci_free_dev(hdev);
1118 }
1119
1120 #ifdef CONFIG_PM
1121 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1122 {
1123         struct btusb_data *data = usb_get_intfdata(intf);
1124
1125         BT_DBG("intf %p", intf);
1126
1127         if (data->suspend_count++)
1128                 return 0;
1129
1130         spin_lock_irq(&data->txlock);
1131         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1132                 set_bit(BTUSB_SUSPENDING, &data->flags);
1133                 spin_unlock_irq(&data->txlock);
1134         } else {
1135                 spin_unlock_irq(&data->txlock);
1136                 data->suspend_count--;
1137                 return -EBUSY;
1138         }
1139
1140         cancel_work_sync(&data->work);
1141
1142         btusb_stop_traffic(data);
1143         usb_kill_anchored_urbs(&data->tx_anchor);
1144
1145         return 0;
1146 }
1147
1148 static void play_deferred(struct btusb_data *data)
1149 {
1150         struct urb *urb;
1151         int err;
1152
1153         while ((urb = usb_get_from_anchor(&data->deferred))) {
1154                 err = usb_submit_urb(urb, GFP_ATOMIC);
1155                 if (err < 0)
1156                         break;
1157
1158                 data->tx_in_flight++;
1159         }
1160         usb_scuttle_anchored_urbs(&data->deferred);
1161 }
1162
1163 static int btusb_resume(struct usb_interface *intf)
1164 {
1165         struct btusb_data *data = usb_get_intfdata(intf);
1166         struct hci_dev *hdev = data->hdev;
1167         int err = 0;
1168
1169         BT_DBG("intf %p", intf);
1170
1171         if (--data->suspend_count)
1172                 return 0;
1173
1174         if (!test_bit(HCI_RUNNING, &hdev->flags))
1175                 goto done;
1176
1177         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1178                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1179                 if (err < 0) {
1180                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1181                         goto failed;
1182                 }
1183         }
1184
1185         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1186                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1187                 if (err < 0) {
1188                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1189                         goto failed;
1190                 }
1191
1192                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1193         }
1194
1195         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1196                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1197                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1198                 else
1199                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1200         }
1201
1202         spin_lock_irq(&data->txlock);
1203         play_deferred(data);
1204         clear_bit(BTUSB_SUSPENDING, &data->flags);
1205         spin_unlock_irq(&data->txlock);
1206         schedule_work(&data->work);
1207
1208         return 0;
1209
1210 failed:
1211         usb_scuttle_anchored_urbs(&data->deferred);
1212 done:
1213         spin_lock_irq(&data->txlock);
1214         clear_bit(BTUSB_SUSPENDING, &data->flags);
1215         spin_unlock_irq(&data->txlock);
1216
1217         return err;
1218 }
1219 #endif
1220
1221 static struct usb_driver btusb_driver = {
1222         .name           = "btusb",
1223         .probe          = btusb_probe,
1224         .disconnect     = btusb_disconnect,
1225 #ifdef CONFIG_PM
1226         .suspend        = btusb_suspend,
1227         .resume         = btusb_resume,
1228 #endif
1229         .id_table       = btusb_table,
1230         .supports_autosuspend = 1,
1231         .disable_hub_initiated_lpm = 1,
1232 };
1233
1234 module_usb_driver(btusb_driver);
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");