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svcrpc: fix svc_xprt_enqueue/svc_recv busy-looping
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / bluetooth / btusb.c
blobe272214110365510fcfcbb6f6f3f75778f65ed46
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(0x413c, 0x8197) },
102
103 /* Foxconn - Hon Hai */
104 { USB_DEVICE(0x0489, 0xe033) },
105
106 { } /* Terminating entry */
107 };
108
109 MODULE_DEVICE_TABLE(usb, btusb_table);
110
111 static struct usb_device_id blacklist_table[] = {
112 /* CSR BlueCore devices */
113 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
114
115 /* Broadcom BCM2033 without firmware */
116 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
117
118 /* Atheros 3011 with sflash firmware */
119 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
120 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
121 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
122 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
123 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
124
125 /* Atheros AR9285 Malbec with sflash firmware */
126 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
127
128 /* Atheros 3012 with sflash firmware */
129 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
130 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
131 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
132 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
133 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
134 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
135 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
136
137 /* Atheros AR5BBU12 with sflash firmware */
138 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
139
140 /* Atheros AR5BBU12 with sflash firmware */
141 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
142
143 /* Broadcom BCM2035 */
144 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
145 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
146 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
147
148 /* Broadcom BCM2045 */
149 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
150 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
151
152 /* IBM/Lenovo ThinkPad with Broadcom chip */
153 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
154 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156 /* HP laptop with Broadcom chip */
157 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
158
159 /* Dell laptop with Broadcom chip */
160 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
161
162 /* Dell Wireless 370 and 410 devices */
163 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
164 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
165
166 /* Belkin F8T012 and F8T013 devices */
167 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
168 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
169
170 /* Asus WL-BTD202 device */
171 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
172
173 /* Kensington Bluetooth USB adapter */
174 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
175
176 /* RTX Telecom based adapters with buggy SCO support */
177 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
178 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
179
180 /* CONWISE Technology based adapters with buggy SCO support */
181 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
182
183 /* Digianswer devices */
184 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
185 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
186
187 /* CSR BlueCore Bluetooth Sniffer */
188 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
189
190 /* Frontline ComProbe Bluetooth Sniffer */
191 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
192
193 { } /* Terminating entry */
194 };
195
196 #define BTUSB_MAX_ISOC_FRAMES 10
197
198 #define BTUSB_INTR_RUNNING 0
199 #define BTUSB_BULK_RUNNING 1
200 #define BTUSB_ISOC_RUNNING 2
201 #define BTUSB_SUSPENDING 3
202 #define BTUSB_DID_ISO_RESUME 4
203
204 struct btusb_data {
205 struct hci_dev *hdev;
206 struct usb_device *udev;
207 struct usb_interface *intf;
208 struct usb_interface *isoc;
209
210 spinlock_t lock;
211
212 unsigned long flags;
213
214 struct work_struct work;
215 struct work_struct waker;
216
217 struct usb_anchor tx_anchor;
218 struct usb_anchor intr_anchor;
219 struct usb_anchor bulk_anchor;
220 struct usb_anchor isoc_anchor;
221 struct usb_anchor deferred;
222 int tx_in_flight;
223 spinlock_t txlock;
224
225 struct usb_endpoint_descriptor *intr_ep;
226 struct usb_endpoint_descriptor *bulk_tx_ep;
227 struct usb_endpoint_descriptor *bulk_rx_ep;
228 struct usb_endpoint_descriptor *isoc_tx_ep;
229 struct usb_endpoint_descriptor *isoc_rx_ep;
230
231 __u8 cmdreq_type;
232
233 unsigned int sco_num;
234 int isoc_altsetting;
235 int suspend_count;
236 };
237
238 static int inc_tx(struct btusb_data *data)
239 {
240 unsigned long flags;
241 int rv;
242
243 spin_lock_irqsave(&data->txlock, flags);
244 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
245 if (!rv)
246 data->tx_in_flight++;
247 spin_unlock_irqrestore(&data->txlock, flags);
248
249 return rv;
250 }
251
252 static void btusb_intr_complete(struct urb *urb)
253 {
254 struct hci_dev *hdev = urb->context;
255 struct btusb_data *data = hci_get_drvdata(hdev);
256 int err;
257
258 BT_DBG("%s urb %p status %d count %d", hdev->name,
259 urb, urb->status, urb->actual_length);
260
261 if (!test_bit(HCI_RUNNING, &hdev->flags))
262 return;
263
264 if (urb->status == 0) {
265 hdev->stat.byte_rx += urb->actual_length;
266
267 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
268 urb->transfer_buffer,
269 urb->actual_length) < 0) {
270 BT_ERR("%s corrupted event packet", hdev->name);
271 hdev->stat.err_rx++;
272 }
273 }
274
275 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
276 return;
277
278 usb_mark_last_busy(data->udev);
279 usb_anchor_urb(urb, &data->intr_anchor);
280
281 err = usb_submit_urb(urb, GFP_ATOMIC);
282 if (err < 0) {
283 /* -EPERM: urb is being killed;
284 * -ENODEV: device got disconnected */
285 if (err != -EPERM && err != -ENODEV)
286 BT_ERR("%s urb %p failed to resubmit (%d)",
287 hdev->name, urb, -err);
288 usb_unanchor_urb(urb);
289 }
290 }
291
292 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
293 {
294 struct btusb_data *data = hci_get_drvdata(hdev);
295 struct urb *urb;
296 unsigned char *buf;
297 unsigned int pipe;
298 int err, size;
299
300 BT_DBG("%s", hdev->name);
301
302 if (!data->intr_ep)
303 return -ENODEV;
304
305 urb = usb_alloc_urb(0, mem_flags);
306 if (!urb)
307 return -ENOMEM;
308
309 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
310
311 buf = kmalloc(size, mem_flags);
312 if (!buf) {
313 usb_free_urb(urb);
314 return -ENOMEM;
315 }
316
317 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
318
319 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
320 btusb_intr_complete, hdev,
321 data->intr_ep->bInterval);
322
323 urb->transfer_flags |= URB_FREE_BUFFER;
324
325 usb_anchor_urb(urb, &data->intr_anchor);
326
327 err = usb_submit_urb(urb, mem_flags);
328 if (err < 0) {
329 if (err != -EPERM && err != -ENODEV)
330 BT_ERR("%s urb %p submission failed (%d)",
331 hdev->name, urb, -err);
332 usb_unanchor_urb(urb);
333 }
334
335 usb_free_urb(urb);
336
337 return err;
338 }
339
340 static void btusb_bulk_complete(struct urb *urb)
341 {
342 struct hci_dev *hdev = urb->context;
343 struct btusb_data *data = hci_get_drvdata(hdev);
344 int err;
345
346 BT_DBG("%s urb %p status %d count %d", hdev->name,
347 urb, urb->status, urb->actual_length);
348
349 if (!test_bit(HCI_RUNNING, &hdev->flags))
350 return;
351
352 if (urb->status == 0) {
353 hdev->stat.byte_rx += urb->actual_length;
354
355 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
356 urb->transfer_buffer,
357 urb->actual_length) < 0) {
358 BT_ERR("%s corrupted ACL packet", hdev->name);
359 hdev->stat.err_rx++;
360 }
361 }
362
363 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
364 return;
365
366 usb_anchor_urb(urb, &data->bulk_anchor);
367 usb_mark_last_busy(data->udev);
368
369 err = usb_submit_urb(urb, GFP_ATOMIC);
370 if (err < 0) {
371 /* -EPERM: urb is being killed;
372 * -ENODEV: device got disconnected */
373 if (err != -EPERM && err != -ENODEV)
374 BT_ERR("%s urb %p failed to resubmit (%d)",
375 hdev->name, urb, -err);
376 usb_unanchor_urb(urb);
377 }
378 }
379
380 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
381 {
382 struct btusb_data *data = hci_get_drvdata(hdev);
383 struct urb *urb;
384 unsigned char *buf;
385 unsigned int pipe;
386 int err, size = HCI_MAX_FRAME_SIZE;
387
388 BT_DBG("%s", hdev->name);
389
390 if (!data->bulk_rx_ep)
391 return -ENODEV;
392
393 urb = usb_alloc_urb(0, mem_flags);
394 if (!urb)
395 return -ENOMEM;
396
397 buf = kmalloc(size, mem_flags);
398 if (!buf) {
399 usb_free_urb(urb);
400 return -ENOMEM;
401 }
402
403 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
404
405 usb_fill_bulk_urb(urb, data->udev, pipe,
406 buf, size, btusb_bulk_complete, hdev);
407
408 urb->transfer_flags |= URB_FREE_BUFFER;
409
410 usb_mark_last_busy(data->udev);
411 usb_anchor_urb(urb, &data->bulk_anchor);
412
413 err = usb_submit_urb(urb, mem_flags);
414 if (err < 0) {
415 if (err != -EPERM && err != -ENODEV)
416 BT_ERR("%s urb %p submission failed (%d)",
417 hdev->name, urb, -err);
418 usb_unanchor_urb(urb);
419 }
420
421 usb_free_urb(urb);
422
423 return err;
424 }
425
426 static void btusb_isoc_complete(struct urb *urb)
427 {
428 struct hci_dev *hdev = urb->context;
429 struct btusb_data *data = hci_get_drvdata(hdev);
430 int i, err;
431
432 BT_DBG("%s urb %p status %d count %d", hdev->name,
433 urb, urb->status, urb->actual_length);
434
435 if (!test_bit(HCI_RUNNING, &hdev->flags))
436 return;
437
438 if (urb->status == 0) {
439 for (i = 0; i < urb->number_of_packets; i++) {
440 unsigned int offset = urb->iso_frame_desc[i].offset;
441 unsigned int length = urb->iso_frame_desc[i].actual_length;
442
443 if (urb->iso_frame_desc[i].status)
444 continue;
445
446 hdev->stat.byte_rx += length;
447
448 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
449 urb->transfer_buffer + offset,
450 length) < 0) {
451 BT_ERR("%s corrupted SCO packet", hdev->name);
452 hdev->stat.err_rx++;
453 }
454 }
455 }
456
457 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
458 return;
459
460 usb_anchor_urb(urb, &data->isoc_anchor);
461
462 err = usb_submit_urb(urb, GFP_ATOMIC);
463 if (err < 0) {
464 /* -EPERM: urb is being killed;
465 * -ENODEV: device got disconnected */
466 if (err != -EPERM && err != -ENODEV)
467 BT_ERR("%s urb %p failed to resubmit (%d)",
468 hdev->name, urb, -err);
469 usb_unanchor_urb(urb);
470 }
471 }
472
473 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
474 {
475 int i, offset = 0;
476
477 BT_DBG("len %d mtu %d", len, mtu);
478
479 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
480 i++, offset += mtu, len -= mtu) {
481 urb->iso_frame_desc[i].offset = offset;
482 urb->iso_frame_desc[i].length = mtu;
483 }
484
485 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
486 urb->iso_frame_desc[i].offset = offset;
487 urb->iso_frame_desc[i].length = len;
488 i++;
489 }
490
491 urb->number_of_packets = i;
492 }
493
494 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
495 {
496 struct btusb_data *data = hci_get_drvdata(hdev);
497 struct urb *urb;
498 unsigned char *buf;
499 unsigned int pipe;
500 int err, size;
501
502 BT_DBG("%s", hdev->name);
503
504 if (!data->isoc_rx_ep)
505 return -ENODEV;
506
507 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
508 if (!urb)
509 return -ENOMEM;
510
511 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
512 BTUSB_MAX_ISOC_FRAMES;
513
514 buf = kmalloc(size, mem_flags);
515 if (!buf) {
516 usb_free_urb(urb);
517 return -ENOMEM;
518 }
519
520 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
521
522 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
523 hdev, data->isoc_rx_ep->bInterval);
524
525 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
526
527 __fill_isoc_descriptor(urb, size,
528 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
529
530 usb_anchor_urb(urb, &data->isoc_anchor);
531
532 err = usb_submit_urb(urb, mem_flags);
533 if (err < 0) {
534 if (err != -EPERM && err != -ENODEV)
535 BT_ERR("%s urb %p submission failed (%d)",
536 hdev->name, urb, -err);
537 usb_unanchor_urb(urb);
538 }
539
540 usb_free_urb(urb);
541
542 return err;
543 }
544
545 static void btusb_tx_complete(struct urb *urb)
546 {
547 struct sk_buff *skb = urb->context;
548 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
549 struct btusb_data *data = hci_get_drvdata(hdev);
550
551 BT_DBG("%s urb %p status %d count %d", hdev->name,
552 urb, urb->status, urb->actual_length);
553
554 if (!test_bit(HCI_RUNNING, &hdev->flags))
555 goto done;
556
557 if (!urb->status)
558 hdev->stat.byte_tx += urb->transfer_buffer_length;
559 else
560 hdev->stat.err_tx++;
561
562 done:
563 spin_lock(&data->txlock);
564 data->tx_in_flight--;
565 spin_unlock(&data->txlock);
566
567 kfree(urb->setup_packet);
568
569 kfree_skb(skb);
570 }
571
572 static void btusb_isoc_tx_complete(struct urb *urb)
573 {
574 struct sk_buff *skb = urb->context;
575 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
576
577 BT_DBG("%s urb %p status %d count %d", hdev->name,
578 urb, urb->status, urb->actual_length);
579
580 if (!test_bit(HCI_RUNNING, &hdev->flags))
581 goto done;
582
583 if (!urb->status)
584 hdev->stat.byte_tx += urb->transfer_buffer_length;
585 else
586 hdev->stat.err_tx++;
587
588 done:
589 kfree(urb->setup_packet);
590
591 kfree_skb(skb);
592 }
593
594 static int btusb_open(struct hci_dev *hdev)
595 {
596 struct btusb_data *data = hci_get_drvdata(hdev);
597 int err;
598
599 BT_DBG("%s", hdev->name);
600
601 err = usb_autopm_get_interface(data->intf);
602 if (err < 0)
603 return err;
604
605 data->intf->needs_remote_wakeup = 1;
606
607 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
608 goto done;
609
610 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
611 goto done;
612
613 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
614 if (err < 0)
615 goto failed;
616
617 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
618 if (err < 0) {
619 usb_kill_anchored_urbs(&data->intr_anchor);
620 goto failed;
621 }
622
623 set_bit(BTUSB_BULK_RUNNING, &data->flags);
624 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
625
626 done:
627 usb_autopm_put_interface(data->intf);
628 return 0;
629
630 failed:
631 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
632 clear_bit(HCI_RUNNING, &hdev->flags);
633 usb_autopm_put_interface(data->intf);
634 return err;
635 }
636
637 static void btusb_stop_traffic(struct btusb_data *data)
638 {
639 usb_kill_anchored_urbs(&data->intr_anchor);
640 usb_kill_anchored_urbs(&data->bulk_anchor);
641 usb_kill_anchored_urbs(&data->isoc_anchor);
642 }
643
644 static int btusb_close(struct hci_dev *hdev)
645 {
646 struct btusb_data *data = hci_get_drvdata(hdev);
647 int err;
648
649 BT_DBG("%s", hdev->name);
650
651 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
652 return 0;
653
654 cancel_work_sync(&data->work);
655 cancel_work_sync(&data->waker);
656
657 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
658 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
659 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
660
661 btusb_stop_traffic(data);
662 err = usb_autopm_get_interface(data->intf);
663 if (err < 0)
664 goto failed;
665
666 data->intf->needs_remote_wakeup = 0;
667 usb_autopm_put_interface(data->intf);
668
669 failed:
670 usb_scuttle_anchored_urbs(&data->deferred);
671 return 0;
672 }
673
674 static int btusb_flush(struct hci_dev *hdev)
675 {
676 struct btusb_data *data = hci_get_drvdata(hdev);
677
678 BT_DBG("%s", hdev->name);
679
680 usb_kill_anchored_urbs(&data->tx_anchor);
681
682 return 0;
683 }
684
685 static int btusb_send_frame(struct sk_buff *skb)
686 {
687 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
688 struct btusb_data *data = hci_get_drvdata(hdev);
689 struct usb_ctrlrequest *dr;
690 struct urb *urb;
691 unsigned int pipe;
692 int err;
693
694 BT_DBG("%s", hdev->name);
695
696 if (!test_bit(HCI_RUNNING, &hdev->flags))
697 return -EBUSY;
698
699 switch (bt_cb(skb)->pkt_type) {
700 case HCI_COMMAND_PKT:
701 urb = usb_alloc_urb(0, GFP_ATOMIC);
702 if (!urb)
703 return -ENOMEM;
704
705 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
706 if (!dr) {
707 usb_free_urb(urb);
708 return -ENOMEM;
709 }
710
711 dr->bRequestType = data->cmdreq_type;
712 dr->bRequest = 0;
713 dr->wIndex = 0;
714 dr->wValue = 0;
715 dr->wLength = __cpu_to_le16(skb->len);
716
717 pipe = usb_sndctrlpipe(data->udev, 0x00);
718
719 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
720 skb->data, skb->len, btusb_tx_complete, skb);
721
722 hdev->stat.cmd_tx++;
723 break;
724
725 case HCI_ACLDATA_PKT:
726 if (!data->bulk_tx_ep)
727 return -ENODEV;
728
729 urb = usb_alloc_urb(0, GFP_ATOMIC);
730 if (!urb)
731 return -ENOMEM;
732
733 pipe = usb_sndbulkpipe(data->udev,
734 data->bulk_tx_ep->bEndpointAddress);
735
736 usb_fill_bulk_urb(urb, data->udev, pipe,
737 skb->data, skb->len, btusb_tx_complete, skb);
738
739 hdev->stat.acl_tx++;
740 break;
741
742 case HCI_SCODATA_PKT:
743 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
744 return -ENODEV;
745
746 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
747 if (!urb)
748 return -ENOMEM;
749
750 pipe = usb_sndisocpipe(data->udev,
751 data->isoc_tx_ep->bEndpointAddress);
752
753 usb_fill_int_urb(urb, data->udev, pipe,
754 skb->data, skb->len, btusb_isoc_tx_complete,
755 skb, data->isoc_tx_ep->bInterval);
756
757 urb->transfer_flags = URB_ISO_ASAP;
758
759 __fill_isoc_descriptor(urb, skb->len,
760 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
761
762 hdev->stat.sco_tx++;
763 goto skip_waking;
764
765 default:
766 return -EILSEQ;
767 }
768
769 err = inc_tx(data);
770 if (err) {
771 usb_anchor_urb(urb, &data->deferred);
772 schedule_work(&data->waker);
773 err = 0;
774 goto done;
775 }
776
777 skip_waking:
778 usb_anchor_urb(urb, &data->tx_anchor);
779
780 err = usb_submit_urb(urb, GFP_ATOMIC);
781 if (err < 0) {
782 if (err != -EPERM && err != -ENODEV)
783 BT_ERR("%s urb %p submission failed (%d)",
784 hdev->name, urb, -err);
785 kfree(urb->setup_packet);
786 usb_unanchor_urb(urb);
787 } else {
788 usb_mark_last_busy(data->udev);
789 }
790
791 done:
792 usb_free_urb(urb);
793 return err;
794 }
795
796 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
797 {
798 struct btusb_data *data = hci_get_drvdata(hdev);
799
800 BT_DBG("%s evt %d", hdev->name, evt);
801
802 if (hdev->conn_hash.sco_num != data->sco_num) {
803 data->sco_num = hdev->conn_hash.sco_num;
804 schedule_work(&data->work);
805 }
806 }
807
808 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
809 {
810 struct btusb_data *data = hci_get_drvdata(hdev);
811 struct usb_interface *intf = data->isoc;
812 struct usb_endpoint_descriptor *ep_desc;
813 int i, err;
814
815 if (!data->isoc)
816 return -ENODEV;
817
818 err = usb_set_interface(data->udev, 1, altsetting);
819 if (err < 0) {
820 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
821 return err;
822 }
823
824 data->isoc_altsetting = altsetting;
825
826 data->isoc_tx_ep = NULL;
827 data->isoc_rx_ep = NULL;
828
829 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
830 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
831
832 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
833 data->isoc_tx_ep = ep_desc;
834 continue;
835 }
836
837 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
838 data->isoc_rx_ep = ep_desc;
839 continue;
840 }
841 }
842
843 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
844 BT_ERR("%s invalid SCO descriptors", hdev->name);
845 return -ENODEV;
846 }
847
848 return 0;
849 }
850
851 static void btusb_work(struct work_struct *work)
852 {
853 struct btusb_data *data = container_of(work, struct btusb_data, work);
854 struct hci_dev *hdev = data->hdev;
855 int new_alts;
856 int err;
857
858 if (hdev->conn_hash.sco_num > 0) {
859 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
860 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
861 if (err < 0) {
862 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
863 usb_kill_anchored_urbs(&data->isoc_anchor);
864 return;
865 }
866
867 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
868 }
869
870 if (hdev->voice_setting & 0x0020) {
871 static const int alts[3] = { 2, 4, 5 };
872 new_alts = alts[hdev->conn_hash.sco_num - 1];
873 } else {
874 new_alts = hdev->conn_hash.sco_num;
875 }
876
877 if (data->isoc_altsetting != new_alts) {
878 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
879 usb_kill_anchored_urbs(&data->isoc_anchor);
880
881 if (__set_isoc_interface(hdev, new_alts) < 0)
882 return;
883 }
884
885 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
886 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
887 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
888 else
889 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
890 }
891 } else {
892 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
893 usb_kill_anchored_urbs(&data->isoc_anchor);
894
895 __set_isoc_interface(hdev, 0);
896 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
897 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
898 }
899 }
900
901 static void btusb_waker(struct work_struct *work)
902 {
903 struct btusb_data *data = container_of(work, struct btusb_data, waker);
904 int err;
905
906 err = usb_autopm_get_interface(data->intf);
907 if (err < 0)
908 return;
909
910 usb_autopm_put_interface(data->intf);
911 }
912
913 static int btusb_probe(struct usb_interface *intf,
914 const struct usb_device_id *id)
915 {
916 struct usb_endpoint_descriptor *ep_desc;
917 struct btusb_data *data;
918 struct hci_dev *hdev;
919 int i, err;
920
921 BT_DBG("intf %p id %p", intf, id);
922
923 /* interface numbers are hardcoded in the spec */
924 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
925 return -ENODEV;
926
927 if (!id->driver_info) {
928 const struct usb_device_id *match;
929 match = usb_match_id(intf, blacklist_table);
930 if (match)
931 id = match;
932 }
933
934 if (id->driver_info == BTUSB_IGNORE)
935 return -ENODEV;
936
937 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
938 return -ENODEV;
939
940 if (ignore_csr && id->driver_info & BTUSB_CSR)
941 return -ENODEV;
942
943 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
944 return -ENODEV;
945
946 if (id->driver_info & BTUSB_ATH3012) {
947 struct usb_device *udev = interface_to_usbdev(intf);
948
949 /* Old firmware would otherwise let ath3k driver load
950 * patch and sysconfig files */
951 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
952 return -ENODEV;
953 }
954
955 data = kzalloc(sizeof(*data), GFP_KERNEL);
956 if (!data)
957 return -ENOMEM;
958
959 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
960 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
961
962 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
963 data->intr_ep = ep_desc;
964 continue;
965 }
966
967 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
968 data->bulk_tx_ep = ep_desc;
969 continue;
970 }
971
972 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
973 data->bulk_rx_ep = ep_desc;
974 continue;
975 }
976 }
977
978 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
979 kfree(data);
980 return -ENODEV;
981 }
982
983 data->cmdreq_type = USB_TYPE_CLASS;
984
985 data->udev = interface_to_usbdev(intf);
986 data->intf = intf;
987
988 spin_lock_init(&data->lock);
989
990 INIT_WORK(&data->work, btusb_work);
991 INIT_WORK(&data->waker, btusb_waker);
992 spin_lock_init(&data->txlock);
993
994 init_usb_anchor(&data->tx_anchor);
995 init_usb_anchor(&data->intr_anchor);
996 init_usb_anchor(&data->bulk_anchor);
997 init_usb_anchor(&data->isoc_anchor);
998 init_usb_anchor(&data->deferred);
999
1000 hdev = hci_alloc_dev();
1001 if (!hdev) {
1002 kfree(data);
1003 return -ENOMEM;
1004 }
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 kfree(data);
1073 return err;
1074 }
1075 }
1076
1077 err = hci_register_dev(hdev);
1078 if (err < 0) {
1079 hci_free_dev(hdev);
1080 kfree(data);
1081 return err;
1082 }
1083
1084 usb_set_intfdata(intf, data);
1085
1086 return 0;
1087 }
1088
1089 static void btusb_disconnect(struct usb_interface *intf)
1090 {
1091 struct btusb_data *data = usb_get_intfdata(intf);
1092 struct hci_dev *hdev;
1093
1094 BT_DBG("intf %p", intf);
1095
1096 if (!data)
1097 return;
1098
1099 hdev = data->hdev;
1100 usb_set_intfdata(data->intf, NULL);
1101
1102 if (data->isoc)
1103 usb_set_intfdata(data->isoc, NULL);
1104
1105 hci_unregister_dev(hdev);
1106
1107 if (intf == data->isoc)
1108 usb_driver_release_interface(&btusb_driver, data->intf);
1109 else if (data->isoc)
1110 usb_driver_release_interface(&btusb_driver, data->isoc);
1111
1112 hci_free_dev(hdev);
1113 kfree(data);
1114 }
1115
1116 #ifdef CONFIG_PM
1117 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1118 {
1119 struct btusb_data *data = usb_get_intfdata(intf);
1120
1121 BT_DBG("intf %p", intf);
1122
1123 if (data->suspend_count++)
1124 return 0;
1125
1126 spin_lock_irq(&data->txlock);
1127 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1128 set_bit(BTUSB_SUSPENDING, &data->flags);
1129 spin_unlock_irq(&data->txlock);
1130 } else {
1131 spin_unlock_irq(&data->txlock);
1132 data->suspend_count--;
1133 return -EBUSY;
1134 }
1135
1136 cancel_work_sync(&data->work);
1137
1138 btusb_stop_traffic(data);
1139 usb_kill_anchored_urbs(&data->tx_anchor);
1140
1141 return 0;
1142 }
1143
1144 static void play_deferred(struct btusb_data *data)
1145 {
1146 struct urb *urb;
1147 int err;
1148
1149 while ((urb = usb_get_from_anchor(&data->deferred))) {
1150 err = usb_submit_urb(urb, GFP_ATOMIC);
1151 if (err < 0)
1152 break;
1153
1154 data->tx_in_flight++;
1155 }
1156 usb_scuttle_anchored_urbs(&data->deferred);
1157 }
1158
1159 static int btusb_resume(struct usb_interface *intf)
1160 {
1161 struct btusb_data *data = usb_get_intfdata(intf);
1162 struct hci_dev *hdev = data->hdev;
1163 int err = 0;
1164
1165 BT_DBG("intf %p", intf);
1166
1167 if (--data->suspend_count)
1168 return 0;
1169
1170 if (!test_bit(HCI_RUNNING, &hdev->flags))
1171 goto done;
1172
1173 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1174 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1175 if (err < 0) {
1176 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1177 goto failed;
1178 }
1179 }
1180
1181 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1182 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1183 if (err < 0) {
1184 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1185 goto failed;
1186 }
1187
1188 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1189 }
1190
1191 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1192 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1193 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1194 else
1195 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1196 }
1197
1198 spin_lock_irq(&data->txlock);
1199 play_deferred(data);
1200 clear_bit(BTUSB_SUSPENDING, &data->flags);
1201 spin_unlock_irq(&data->txlock);
1202 schedule_work(&data->work);
1203
1204 return 0;
1205
1206 failed:
1207 usb_scuttle_anchored_urbs(&data->deferred);
1208 done:
1209 spin_lock_irq(&data->txlock);
1210 clear_bit(BTUSB_SUSPENDING, &data->flags);
1211 spin_unlock_irq(&data->txlock);
1212
1213 return err;
1214 }
1215 #endif
1216
1217 static struct usb_driver btusb_driver = {
1218 .name = "btusb",
1219 .probe = btusb_probe,
1220 .disconnect = btusb_disconnect,
1221 #ifdef CONFIG_PM
1222 .suspend = btusb_suspend,
1223 .resume = btusb_resume,
1224 #endif
1225 .id_table = btusb_table,
1226 .supports_autosuspend = 1,
1227 .disable_hub_initiated_lpm = 1,
1228 };
1229
1230 module_usb_driver(btusb_driver);
1231
1232 module_param(ignore_dga, bool, 0644);
1233 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1234
1235 module_param(ignore_csr, bool, 0644);
1236 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1237
1238 module_param(ignore_sniffer, bool, 0644);
1239 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1240
1241 module_param(disable_scofix, bool, 0644);
1242 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1243
1244 module_param(force_scofix, bool, 0644);
1245 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1246
1247 module_param(reset, bool, 0644);
1248 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1249
1250 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1251 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1252 MODULE_VERSION(VERSION);
1253 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree