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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
[GitHub/mt8127/android_kernel_alcatel_ttab.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");
kernel source for telekom puls (alcatel/mediatek)