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sound: ensure device number is valid in snd_seq_oss_synth_make_info
[linux-2.6/mini2440.git] / drivers / bluetooth / hci_usb.c
blobc33bb59ed1fa6c2aa73dc2ecfe1cde1548f08518
1 /*
2 HCI USB driver for Linux Bluetooth protocol stack (BlueZ)
3 Copyright (C) 2000-2001 Qualcomm Incorporated
4 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
5
6 Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com>
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 version 2 as
10 published by the Free Software Foundation;
11
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24 */
25
26 /*
27 * Bluetooth HCI USB driver.
28 * Based on original USB Bluetooth driver for Linux kernel
29 * Copyright (c) 2000 Greg Kroah-Hartman <greg@kroah.com>
30 * Copyright (c) 2000 Mark Douglas Corner <mcorner@umich.edu>
31 *
32 */
33
34 #include <linux/module.h>
35
36 #include <linux/kernel.h>
37 #include <linux/init.h>
38 #include <linux/unistd.h>
39 #include <linux/types.h>
40 #include <linux/interrupt.h>
41 #include <linux/moduleparam.h>
42
43 #include <linux/slab.h>
44 #include <linux/errno.h>
45 #include <linux/string.h>
46 #include <linux/skbuff.h>
47
48 #include <linux/usb.h>
49
50 #include <net/bluetooth/bluetooth.h>
51 #include <net/bluetooth/hci_core.h>
52
53 #include "hci_usb.h"
54
55 #ifndef CONFIG_BT_HCIUSB_DEBUG
56 #undef BT_DBG
57 #define BT_DBG(D...)
58 #endif
59
60 #ifndef CONFIG_BT_HCIUSB_ZERO_PACKET
61 #undef URB_ZERO_PACKET
62 #define URB_ZERO_PACKET 0
63 #endif
64
65 static int ignore;
66 static int ignore_dga;
67 static int ignore_csr;
68 static int ignore_sniffer;
69 static int disable_scofix;
70 static int force_scofix;
71 static int reset;
72
73 #ifdef CONFIG_BT_HCIUSB_SCO
74 static int isoc = 2;
75 #endif
76
77 #define VERSION "2.9"
78
79 static struct usb_driver hci_usb_driver;
80
81 static struct usb_device_id bluetooth_ids[] = {
82 /* Generic Bluetooth USB device */
83 { USB_DEVICE_INFO(HCI_DEV_CLASS, HCI_DEV_SUBCLASS, HCI_DEV_PROTOCOL) },
84
85 /* AVM BlueFRITZ! USB v2.0 */
86 { USB_DEVICE(0x057c, 0x3800) },
87
88 /* Bluetooth Ultraport Module from IBM */
89 { USB_DEVICE(0x04bf, 0x030a) },
90
91 /* ALPS Modules with non-standard id */
92 { USB_DEVICE(0x044e, 0x3001) },
93 { USB_DEVICE(0x044e, 0x3002) },
94
95 /* Ericsson with non-standard id */
96 { USB_DEVICE(0x0bdb, 0x1002) },
97
98 /* Canyon CN-BTU1 with HID interfaces */
99 { USB_DEVICE(0x0c10, 0x0000), .driver_info = HCI_RESET },
100
101 { } /* Terminating entry */
102 };
103
104 MODULE_DEVICE_TABLE (usb, bluetooth_ids);
105
106 static struct usb_device_id blacklist_ids[] = {
107 /* CSR BlueCore devices */
108 { USB_DEVICE(0x0a12, 0x0001), .driver_info = HCI_CSR },
109
110 /* Broadcom BCM2033 without firmware */
111 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = HCI_IGNORE },
112
113 /* Broadcom BCM2035 */
114 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
115 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
116 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = HCI_BCM92035 },
117
118 /* Broadcom BCM2045 */
119 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
120 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
121
122 /* IBM/Lenovo ThinkPad with Broadcom chip */
123 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
124 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
125
126 /* Targus ACB10US */
127 { USB_DEVICE(0x0a5c, 0x2100), .driver_info = HCI_RESET },
128
129 /* ANYCOM Bluetooth USB-200 and USB-250 */
130 { USB_DEVICE(0x0a5c, 0x2111), .driver_info = HCI_RESET },
131
132 /* HP laptop with Broadcom chip */
133 { USB_DEVICE(0x03f0, 0x171d), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
134
135 /* Dell laptop with Broadcom chip */
136 { USB_DEVICE(0x413c, 0x8126), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
137 /* Dell Wireless 370 */
138 { USB_DEVICE(0x413c, 0x8156), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
139 /* Dell Wireless 410 */
140 { USB_DEVICE(0x413c, 0x8152), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
141
142 /* Broadcom 2046 */
143 { USB_DEVICE(0x0a5c, 0x2151), .driver_info = HCI_RESET },
144
145 /* Microsoft Wireless Transceiver for Bluetooth 2.0 */
146 { USB_DEVICE(0x045e, 0x009c), .driver_info = HCI_RESET },
147
148 /* Kensington Bluetooth USB adapter */
149 { USB_DEVICE(0x047d, 0x105d), .driver_info = HCI_RESET },
150 { USB_DEVICE(0x047d, 0x105e), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
151
152 /* ISSC Bluetooth Adapter v3.1 */
153 { USB_DEVICE(0x1131, 0x1001), .driver_info = HCI_RESET },
154
155 /* RTX Telecom based adapters with buggy SCO support */
156 { USB_DEVICE(0x0400, 0x0807), .driver_info = HCI_BROKEN_ISOC },
157 { USB_DEVICE(0x0400, 0x080a), .driver_info = HCI_BROKEN_ISOC },
158
159 /* CONWISE Technology based adapters with buggy SCO support */
160 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = HCI_BROKEN_ISOC },
161
162 /* Belkin F8T012 and F8T013 devices */
163 { USB_DEVICE(0x050d, 0x0012), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
164 { USB_DEVICE(0x050d, 0x0013), .driver_info = HCI_RESET | HCI_WRONG_SCO_MTU },
165
166 /* Digianswer devices */
167 { USB_DEVICE(0x08fd, 0x0001), .driver_info = HCI_DIGIANSWER },
168 { USB_DEVICE(0x08fd, 0x0002), .driver_info = HCI_IGNORE },
169
170 /* CSR BlueCore Bluetooth Sniffer */
171 { USB_DEVICE(0x0a12, 0x0002), .driver_info = HCI_SNIFFER },
172
173 /* Frontline ComProbe Bluetooth Sniffer */
174 { USB_DEVICE(0x16d3, 0x0002), .driver_info = HCI_SNIFFER },
175
176 { } /* Terminating entry */
177 };
178
179 static struct _urb *_urb_alloc(int isoc, gfp_t gfp)
180 {
181 struct _urb *_urb = kmalloc(sizeof(struct _urb) +
182 sizeof(struct usb_iso_packet_descriptor) * isoc, gfp);
183 if (_urb) {
184 memset(_urb, 0, sizeof(*_urb));
185 usb_init_urb(&_urb->urb);
186 }
187 return _urb;
188 }
189
190 static struct _urb *_urb_dequeue(struct _urb_queue *q)
191 {
192 struct _urb *_urb = NULL;
193 unsigned long flags;
194 spin_lock_irqsave(&q->lock, flags);
195 {
196 struct list_head *head = &q->head;
197 struct list_head *next = head->next;
198 if (next != head) {
199 _urb = list_entry(next, struct _urb, list);
200 list_del(next); _urb->queue = NULL;
201 }
202 }
203 spin_unlock_irqrestore(&q->lock, flags);
204 return _urb;
205 }
206
207 static void hci_usb_rx_complete(struct urb *urb);
208 static void hci_usb_tx_complete(struct urb *urb);
209
210 #define __pending_tx(husb, type) (&husb->pending_tx[type-1])
211 #define __pending_q(husb, type) (&husb->pending_q[type-1])
212 #define __completed_q(husb, type) (&husb->completed_q[type-1])
213 #define __transmit_q(husb, type) (&husb->transmit_q[type-1])
214
215 static inline struct _urb *__get_completed(struct hci_usb *husb, int type)
216 {
217 return _urb_dequeue(__completed_q(husb, type));
218 }
219
220 #ifdef CONFIG_BT_HCIUSB_SCO
221 static void __fill_isoc_desc(struct urb *urb, int len, int mtu)
222 {
223 int offset = 0, i;
224
225 BT_DBG("len %d mtu %d", len, mtu);
226
227 for (i=0; i < HCI_MAX_ISOC_FRAMES && len >= mtu; i++, offset += mtu, len -= mtu) {
228 urb->iso_frame_desc[i].offset = offset;
229 urb->iso_frame_desc[i].length = mtu;
230 BT_DBG("desc %d offset %d len %d", i, offset, mtu);
231 }
232 if (len && i < HCI_MAX_ISOC_FRAMES) {
233 urb->iso_frame_desc[i].offset = offset;
234 urb->iso_frame_desc[i].length = len;
235 BT_DBG("desc %d offset %d len %d", i, offset, len);
236 i++;
237 }
238 urb->number_of_packets = i;
239 }
240 #endif
241
242 static int hci_usb_intr_rx_submit(struct hci_usb *husb)
243 {
244 struct _urb *_urb;
245 struct urb *urb;
246 int err, pipe, interval, size;
247 void *buf;
248
249 BT_DBG("%s", husb->hdev->name);
250
251 size = le16_to_cpu(husb->intr_in_ep->desc.wMaxPacketSize);
252
253 buf = kmalloc(size, GFP_ATOMIC);
254 if (!buf)
255 return -ENOMEM;
256
257 _urb = _urb_alloc(0, GFP_ATOMIC);
258 if (!_urb) {
259 kfree(buf);
260 return -ENOMEM;
261 }
262 _urb->type = HCI_EVENT_PKT;
263 _urb_queue_tail(__pending_q(husb, _urb->type), _urb);
264
265 urb = &_urb->urb;
266 pipe = usb_rcvintpipe(husb->udev, husb->intr_in_ep->desc.bEndpointAddress);
267 interval = husb->intr_in_ep->desc.bInterval;
268 usb_fill_int_urb(urb, husb->udev, pipe, buf, size, hci_usb_rx_complete, husb, interval);
269
270 err = usb_submit_urb(urb, GFP_ATOMIC);
271 if (err) {
272 BT_ERR("%s intr rx submit failed urb %p err %d",
273 husb->hdev->name, urb, err);
274 _urb_unlink(_urb);
275 kfree(_urb);
276 kfree(buf);
277 }
278 return err;
279 }
280
281 static int hci_usb_bulk_rx_submit(struct hci_usb *husb)
282 {
283 struct _urb *_urb;
284 struct urb *urb;
285 int err, pipe, size = HCI_MAX_FRAME_SIZE;
286 void *buf;
287
288 buf = kmalloc(size, GFP_ATOMIC);
289 if (!buf)
290 return -ENOMEM;
291
292 _urb = _urb_alloc(0, GFP_ATOMIC);
293 if (!_urb) {
294 kfree(buf);
295 return -ENOMEM;
296 }
297 _urb->type = HCI_ACLDATA_PKT;
298 _urb_queue_tail(__pending_q(husb, _urb->type), _urb);
299
300 urb = &_urb->urb;
301 pipe = usb_rcvbulkpipe(husb->udev, husb->bulk_in_ep->desc.bEndpointAddress);
302 usb_fill_bulk_urb(urb, husb->udev, pipe, buf, size, hci_usb_rx_complete, husb);
303 urb->transfer_flags = 0;
304
305 BT_DBG("%s urb %p", husb->hdev->name, urb);
306
307 err = usb_submit_urb(urb, GFP_ATOMIC);
308 if (err) {
309 BT_ERR("%s bulk rx submit failed urb %p err %d",
310 husb->hdev->name, urb, err);
311 _urb_unlink(_urb);
312 kfree(_urb);
313 kfree(buf);
314 }
315 return err;
316 }
317
318 #ifdef CONFIG_BT_HCIUSB_SCO
319 static int hci_usb_isoc_rx_submit(struct hci_usb *husb)
320 {
321 struct _urb *_urb;
322 struct urb *urb;
323 int err, mtu, size;
324 void *buf;
325
326 mtu = le16_to_cpu(husb->isoc_in_ep->desc.wMaxPacketSize);
327 size = mtu * HCI_MAX_ISOC_FRAMES;
328
329 buf = kmalloc(size, GFP_ATOMIC);
330 if (!buf)
331 return -ENOMEM;
332
333 _urb = _urb_alloc(HCI_MAX_ISOC_FRAMES, GFP_ATOMIC);
334 if (!_urb) {
335 kfree(buf);
336 return -ENOMEM;
337 }
338 _urb->type = HCI_SCODATA_PKT;
339 _urb_queue_tail(__pending_q(husb, _urb->type), _urb);
340
341 urb = &_urb->urb;
342
343 urb->context = husb;
344 urb->dev = husb->udev;
345 urb->pipe = usb_rcvisocpipe(husb->udev, husb->isoc_in_ep->desc.bEndpointAddress);
346 urb->complete = hci_usb_rx_complete;
347
348 urb->interval = husb->isoc_in_ep->desc.bInterval;
349
350 urb->transfer_buffer_length = size;
351 urb->transfer_buffer = buf;
352 urb->transfer_flags = URB_ISO_ASAP;
353
354 __fill_isoc_desc(urb, size, mtu);
355
356 BT_DBG("%s urb %p", husb->hdev->name, urb);
357
358 err = usb_submit_urb(urb, GFP_ATOMIC);
359 if (err) {
360 BT_ERR("%s isoc rx submit failed urb %p err %d",
361 husb->hdev->name, urb, err);
362 _urb_unlink(_urb);
363 kfree(_urb);
364 kfree(buf);
365 }
366 return err;
367 }
368 #endif
369
370 /* Initialize device */
371 static int hci_usb_open(struct hci_dev *hdev)
372 {
373 struct hci_usb *husb = (struct hci_usb *) hdev->driver_data;
374 int i, err;
375 unsigned long flags;
376
377 BT_DBG("%s", hdev->name);
378
379 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
380 return 0;
381
382 write_lock_irqsave(&husb->completion_lock, flags);
383
384 err = hci_usb_intr_rx_submit(husb);
385 if (!err) {
386 for (i = 0; i < HCI_MAX_BULK_RX; i++)
387 hci_usb_bulk_rx_submit(husb);
388
389 #ifdef CONFIG_BT_HCIUSB_SCO
390 if (husb->isoc_iface)
391 for (i = 0; i < HCI_MAX_ISOC_RX; i++)
392 hci_usb_isoc_rx_submit(husb);
393 #endif
394 } else {
395 clear_bit(HCI_RUNNING, &hdev->flags);
396 }
397
398 write_unlock_irqrestore(&husb->completion_lock, flags);
399 return err;
400 }
401
402 /* Reset device */
403 static int hci_usb_flush(struct hci_dev *hdev)
404 {
405 struct hci_usb *husb = (struct hci_usb *) hdev->driver_data;
406 int i;
407
408 BT_DBG("%s", hdev->name);
409
410 for (i = 0; i < 4; i++)
411 skb_queue_purge(&husb->transmit_q[i]);
412 return 0;
413 }
414
415 static void hci_usb_unlink_urbs(struct hci_usb *husb)
416 {
417 int i;
418
419 BT_DBG("%s", husb->hdev->name);
420
421 for (i = 0; i < 4; i++) {
422 struct _urb *_urb;
423 struct urb *urb;
424
425 /* Kill pending requests */
426 while ((_urb = _urb_dequeue(&husb->pending_q[i]))) {
427 urb = &_urb->urb;
428 BT_DBG("%s unlinking _urb %p type %d urb %p",
429 husb->hdev->name, _urb, _urb->type, urb);
430 usb_kill_urb(urb);
431 _urb_queue_tail(__completed_q(husb, _urb->type), _urb);
432 }
433
434 /* Release completed requests */
435 while ((_urb = _urb_dequeue(&husb->completed_q[i]))) {
436 urb = &_urb->urb;
437 BT_DBG("%s freeing _urb %p type %d urb %p",
438 husb->hdev->name, _urb, _urb->type, urb);
439 kfree(urb->setup_packet);
440 kfree(urb->transfer_buffer);
441 kfree(_urb);
442 }
443 }
444 }
445
446 /* Close device */
447 static int hci_usb_close(struct hci_dev *hdev)
448 {
449 struct hci_usb *husb = (struct hci_usb *) hdev->driver_data;
450 unsigned long flags;
451
452 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
453 return 0;
454
455 BT_DBG("%s", hdev->name);
456
457 /* Synchronize with completion handlers */
458 write_lock_irqsave(&husb->completion_lock, flags);
459 write_unlock_irqrestore(&husb->completion_lock, flags);
460
461 hci_usb_unlink_urbs(husb);
462 hci_usb_flush(hdev);
463 return 0;
464 }
465
466 static int __tx_submit(struct hci_usb *husb, struct _urb *_urb)
467 {
468 struct urb *urb = &_urb->urb;
469 int err;
470
471 BT_DBG("%s urb %p type %d", husb->hdev->name, urb, _urb->type);
472
473 _urb_queue_tail(__pending_q(husb, _urb->type), _urb);
474 err = usb_submit_urb(urb, GFP_ATOMIC);
475 if (err) {
476 BT_ERR("%s tx submit failed urb %p type %d err %d",
477 husb->hdev->name, urb, _urb->type, err);
478 _urb_unlink(_urb);
479 _urb_queue_tail(__completed_q(husb, _urb->type), _urb);
480 } else
481 atomic_inc(__pending_tx(husb, _urb->type));
482
483 return err;
484 }
485
486 static inline int hci_usb_send_ctrl(struct hci_usb *husb, struct sk_buff *skb)
487 {
488 struct _urb *_urb = __get_completed(husb, bt_cb(skb)->pkt_type);
489 struct usb_ctrlrequest *dr;
490 struct urb *urb;
491
492 if (!_urb) {
493 _urb = _urb_alloc(0, GFP_ATOMIC);
494 if (!_urb)
495 return -ENOMEM;
496 _urb->type = bt_cb(skb)->pkt_type;
497
498 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
499 if (!dr) {
500 kfree(_urb);
501 return -ENOMEM;
502 }
503 } else
504 dr = (void *) _urb->urb.setup_packet;
505
506 dr->bRequestType = husb->ctrl_req;
507 dr->bRequest = 0;
508 dr->wIndex = 0;
509 dr->wValue = 0;
510 dr->wLength = __cpu_to_le16(skb->len);
511
512 urb = &_urb->urb;
513 usb_fill_control_urb(urb, husb->udev, usb_sndctrlpipe(husb->udev, 0),
514 (void *) dr, skb->data, skb->len, hci_usb_tx_complete, husb);
515
516 BT_DBG("%s skb %p len %d", husb->hdev->name, skb, skb->len);
517
518 _urb->priv = skb;
519 return __tx_submit(husb, _urb);
520 }
521
522 static inline int hci_usb_send_bulk(struct hci_usb *husb, struct sk_buff *skb)
523 {
524 struct _urb *_urb = __get_completed(husb, bt_cb(skb)->pkt_type);
525 struct urb *urb;
526 int pipe;
527
528 if (!_urb) {
529 _urb = _urb_alloc(0, GFP_ATOMIC);
530 if (!_urb)
531 return -ENOMEM;
532 _urb->type = bt_cb(skb)->pkt_type;
533 }
534
535 urb = &_urb->urb;
536 pipe = usb_sndbulkpipe(husb->udev, husb->bulk_out_ep->desc.bEndpointAddress);
537 usb_fill_bulk_urb(urb, husb->udev, pipe, skb->data, skb->len,
538 hci_usb_tx_complete, husb);
539 urb->transfer_flags = URB_ZERO_PACKET;
540
541 BT_DBG("%s skb %p len %d", husb->hdev->name, skb, skb->len);
542
543 _urb->priv = skb;
544 return __tx_submit(husb, _urb);
545 }
546
547 #ifdef CONFIG_BT_HCIUSB_SCO
548 static inline int hci_usb_send_isoc(struct hci_usb *husb, struct sk_buff *skb)
549 {
550 struct _urb *_urb = __get_completed(husb, bt_cb(skb)->pkt_type);
551 struct urb *urb;
552
553 if (!_urb) {
554 _urb = _urb_alloc(HCI_MAX_ISOC_FRAMES, GFP_ATOMIC);
555 if (!_urb)
556 return -ENOMEM;
557 _urb->type = bt_cb(skb)->pkt_type;
558 }
559
560 BT_DBG("%s skb %p len %d", husb->hdev->name, skb, skb->len);
561
562 urb = &_urb->urb;
563
564 urb->context = husb;
565 urb->dev = husb->udev;
566 urb->pipe = usb_sndisocpipe(husb->udev, husb->isoc_out_ep->desc.bEndpointAddress);
567 urb->complete = hci_usb_tx_complete;
568 urb->transfer_flags = URB_ISO_ASAP;
569
570 urb->interval = husb->isoc_out_ep->desc.bInterval;
571
572 urb->transfer_buffer = skb->data;
573 urb->transfer_buffer_length = skb->len;
574
575 __fill_isoc_desc(urb, skb->len, le16_to_cpu(husb->isoc_out_ep->desc.wMaxPacketSize));
576
577 _urb->priv = skb;
578 return __tx_submit(husb, _urb);
579 }
580 #endif
581
582 static void hci_usb_tx_process(struct hci_usb *husb)
583 {
584 struct sk_buff_head *q;
585 struct sk_buff *skb;
586
587 BT_DBG("%s", husb->hdev->name);
588
589 do {
590 clear_bit(HCI_USB_TX_WAKEUP, &husb->state);
591
592 /* Process command queue */
593 q = __transmit_q(husb, HCI_COMMAND_PKT);
594 if (!atomic_read(__pending_tx(husb, HCI_COMMAND_PKT)) &&
595 (skb = skb_dequeue(q))) {
596 if (hci_usb_send_ctrl(husb, skb) < 0)
597 skb_queue_head(q, skb);
598 }
599
600 #ifdef CONFIG_BT_HCIUSB_SCO
601 /* Process SCO queue */
602 q = __transmit_q(husb, HCI_SCODATA_PKT);
603 if (atomic_read(__pending_tx(husb, HCI_SCODATA_PKT)) < HCI_MAX_ISOC_TX &&
604 (skb = skb_dequeue(q))) {
605 if (hci_usb_send_isoc(husb, skb) < 0)
606 skb_queue_head(q, skb);
607 }
608 #endif
609
610 /* Process ACL queue */
611 q = __transmit_q(husb, HCI_ACLDATA_PKT);
612 while (atomic_read(__pending_tx(husb, HCI_ACLDATA_PKT)) < HCI_MAX_BULK_TX &&
613 (skb = skb_dequeue(q))) {
614 if (hci_usb_send_bulk(husb, skb) < 0) {
615 skb_queue_head(q, skb);
616 break;
617 }
618 }
619 } while(test_bit(HCI_USB_TX_WAKEUP, &husb->state));
620 }
621
622 static inline void hci_usb_tx_wakeup(struct hci_usb *husb)
623 {
624 /* Serialize TX queue processing to avoid data reordering */
625 if (!test_and_set_bit(HCI_USB_TX_PROCESS, &husb->state)) {
626 hci_usb_tx_process(husb);
627 clear_bit(HCI_USB_TX_PROCESS, &husb->state);
628 } else
629 set_bit(HCI_USB_TX_WAKEUP, &husb->state);
630 }
631
632 /* Send frames from HCI layer */
633 static int hci_usb_send_frame(struct sk_buff *skb)
634 {
635 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
636 struct hci_usb *husb;
637
638 if (!hdev) {
639 BT_ERR("frame for uknown device (hdev=NULL)");
640 return -ENODEV;
641 }
642
643 if (!test_bit(HCI_RUNNING, &hdev->flags))
644 return -EBUSY;
645
646 BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len);
647
648 husb = (struct hci_usb *) hdev->driver_data;
649
650 switch (bt_cb(skb)->pkt_type) {
651 case HCI_COMMAND_PKT:
652 hdev->stat.cmd_tx++;
653 break;
654
655 case HCI_ACLDATA_PKT:
656 hdev->stat.acl_tx++;
657 break;
658
659 #ifdef CONFIG_BT_HCIUSB_SCO
660 case HCI_SCODATA_PKT:
661 hdev->stat.sco_tx++;
662 break;
663 #endif
664
665 default:
666 kfree_skb(skb);
667 return 0;
668 }
669
670 read_lock(&husb->completion_lock);
671
672 skb_queue_tail(__transmit_q(husb, bt_cb(skb)->pkt_type), skb);
673 hci_usb_tx_wakeup(husb);
674
675 read_unlock(&husb->completion_lock);
676 return 0;
677 }
678
679 static void hci_usb_rx_complete(struct urb *urb)
680 {
681 struct _urb *_urb = container_of(urb, struct _urb, urb);
682 struct hci_usb *husb = (void *) urb->context;
683 struct hci_dev *hdev = husb->hdev;
684 int err, count = urb->actual_length;
685
686 BT_DBG("%s urb %p type %d status %d count %d flags %x", hdev->name, urb,
687 _urb->type, urb->status, count, urb->transfer_flags);
688
689 read_lock(&husb->completion_lock);
690
691 if (!test_bit(HCI_RUNNING, &hdev->flags))
692 goto unlock;
693
694 if (urb->status || !count)
695 goto resubmit;
696
697 if (_urb->type == HCI_SCODATA_PKT) {
698 #ifdef CONFIG_BT_HCIUSB_SCO
699 int i;
700 for (i=0; i < urb->number_of_packets; i++) {
701 BT_DBG("desc %d status %d offset %d len %d", i,
702 urb->iso_frame_desc[i].status,
703 urb->iso_frame_desc[i].offset,
704 urb->iso_frame_desc[i].actual_length);
705
706 if (!urb->iso_frame_desc[i].status) {
707 husb->hdev->stat.byte_rx += urb->iso_frame_desc[i].actual_length;
708 hci_recv_fragment(husb->hdev, _urb->type,
709 urb->transfer_buffer + urb->iso_frame_desc[i].offset,
710 urb->iso_frame_desc[i].actual_length);
711 }
712 }
713 #else
714 ;
715 #endif
716 } else {
717 husb->hdev->stat.byte_rx += count;
718 err = hci_recv_fragment(husb->hdev, _urb->type, urb->transfer_buffer, count);
719 if (err < 0) {
720 BT_ERR("%s corrupted packet: type %d count %d",
721 husb->hdev->name, _urb->type, count);
722 hdev->stat.err_rx++;
723 }
724 }
725
726 resubmit:
727 urb->dev = husb->udev;
728 err = usb_submit_urb(urb, GFP_ATOMIC);
729 BT_DBG("%s urb %p type %d resubmit status %d", hdev->name, urb,
730 _urb->type, err);
731
732 unlock:
733 read_unlock(&husb->completion_lock);
734 }
735
736 static void hci_usb_tx_complete(struct urb *urb)
737 {
738 struct _urb *_urb = container_of(urb, struct _urb, urb);
739 struct hci_usb *husb = (void *) urb->context;
740 struct hci_dev *hdev = husb->hdev;
741
742 BT_DBG("%s urb %p status %d flags %x", hdev->name, urb,
743 urb->status, urb->transfer_flags);
744
745 atomic_dec(__pending_tx(husb, _urb->type));
746
747 urb->transfer_buffer = NULL;
748 kfree_skb((struct sk_buff *) _urb->priv);
749
750 if (!test_bit(HCI_RUNNING, &hdev->flags))
751 return;
752
753 if (!urb->status)
754 hdev->stat.byte_tx += urb->transfer_buffer_length;
755 else
756 hdev->stat.err_tx++;
757
758 read_lock(&husb->completion_lock);
759
760 _urb_unlink(_urb);
761 _urb_queue_tail(__completed_q(husb, _urb->type), _urb);
762
763 hci_usb_tx_wakeup(husb);
764
765 read_unlock(&husb->completion_lock);
766 }
767
768 static void hci_usb_destruct(struct hci_dev *hdev)
769 {
770 struct hci_usb *husb = (struct hci_usb *) hdev->driver_data;
771
772 BT_DBG("%s", hdev->name);
773
774 kfree(husb);
775 }
776
777 static void hci_usb_notify(struct hci_dev *hdev, unsigned int evt)
778 {
779 BT_DBG("%s evt %d", hdev->name, evt);
780 }
781
782 static int hci_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
783 {
784 struct usb_device *udev = interface_to_usbdev(intf);
785 struct usb_host_endpoint *bulk_out_ep = NULL;
786 struct usb_host_endpoint *bulk_in_ep = NULL;
787 struct usb_host_endpoint *intr_in_ep = NULL;
788 struct usb_host_endpoint *ep;
789 struct usb_host_interface *uif;
790 struct usb_interface *isoc_iface;
791 struct hci_usb *husb;
792 struct hci_dev *hdev;
793 int i, e, size, isoc_ifnum, isoc_alts;
794
795 BT_DBG("udev %p intf %p", udev, intf);
796
797 if (!id->driver_info) {
798 const struct usb_device_id *match;
799 match = usb_match_id(intf, blacklist_ids);
800 if (match)
801 id = match;
802 }
803
804 if (ignore || id->driver_info & HCI_IGNORE)
805 return -ENODEV;
806
807 if (ignore_dga && id->driver_info & HCI_DIGIANSWER)
808 return -ENODEV;
809
810 if (ignore_csr && id->driver_info & HCI_CSR)
811 return -ENODEV;
812
813 if (ignore_sniffer && id->driver_info & HCI_SNIFFER)
814 return -ENODEV;
815
816 if (intf->cur_altsetting->desc.bInterfaceNumber > 0)
817 return -ENODEV;
818
819 /* Find endpoints that we need */
820 uif = intf->cur_altsetting;
821 for (e = 0; e < uif->desc.bNumEndpoints; e++) {
822 ep = &uif->endpoint[e];
823
824 switch (ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
825 case USB_ENDPOINT_XFER_INT:
826 if (ep->desc.bEndpointAddress & USB_DIR_IN)
827 intr_in_ep = ep;
828 break;
829
830 case USB_ENDPOINT_XFER_BULK:
831 if (ep->desc.bEndpointAddress & USB_DIR_IN)
832 bulk_in_ep = ep;
833 else
834 bulk_out_ep = ep;
835 break;
836 }
837 }
838
839 if (!bulk_in_ep || !bulk_out_ep || !intr_in_ep) {
840 BT_DBG("Bulk endpoints not found");
841 goto done;
842 }
843
844 if (!(husb = kzalloc(sizeof(struct hci_usb), GFP_KERNEL))) {
845 BT_ERR("Can't allocate: control structure");
846 goto done;
847 }
848
849 husb->udev = udev;
850 husb->bulk_out_ep = bulk_out_ep;
851 husb->bulk_in_ep = bulk_in_ep;
852 husb->intr_in_ep = intr_in_ep;
853
854 if (id->driver_info & HCI_DIGIANSWER)
855 husb->ctrl_req = USB_TYPE_VENDOR;
856 else
857 husb->ctrl_req = USB_TYPE_CLASS;
858
859 /* Find isochronous endpoints that we can use */
860 size = 0;
861 isoc_iface = NULL;
862 isoc_alts = 0;
863 isoc_ifnum = 1;
864
865 #ifdef CONFIG_BT_HCIUSB_SCO
866 if (isoc && !(id->driver_info & (HCI_BROKEN_ISOC | HCI_SNIFFER)))
867 isoc_iface = usb_ifnum_to_if(udev, isoc_ifnum);
868
869 if (isoc_iface) {
870 int a;
871 struct usb_host_endpoint *isoc_out_ep = NULL;
872 struct usb_host_endpoint *isoc_in_ep = NULL;
873
874 for (a = 0; a < isoc_iface->num_altsetting; a++) {
875 uif = &isoc_iface->altsetting[a];
876 for (e = 0; e < uif->desc.bNumEndpoints; e++) {
877 ep = &uif->endpoint[e];
878
879 switch (ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
880 case USB_ENDPOINT_XFER_ISOC:
881 if (le16_to_cpu(ep->desc.wMaxPacketSize) < size ||
882 uif->desc.bAlternateSetting != isoc)
883 break;
884 size = le16_to_cpu(ep->desc.wMaxPacketSize);
885
886 isoc_alts = uif->desc.bAlternateSetting;
887
888 if (ep->desc.bEndpointAddress & USB_DIR_IN)
889 isoc_in_ep = ep;
890 else
891 isoc_out_ep = ep;
892 break;
893 }
894 }
895 }
896
897 if (!isoc_in_ep || !isoc_out_ep)
898 BT_DBG("Isoc endpoints not found");
899 else {
900 BT_DBG("isoc ifnum %d alts %d", isoc_ifnum, isoc_alts);
901 if (usb_driver_claim_interface(&hci_usb_driver, isoc_iface, husb) != 0)
902 BT_ERR("Can't claim isoc interface");
903 else if (usb_set_interface(udev, isoc_ifnum, isoc_alts)) {
904 BT_ERR("Can't set isoc interface settings");
905 husb->isoc_iface = isoc_iface;
906 usb_driver_release_interface(&hci_usb_driver, isoc_iface);
907 husb->isoc_iface = NULL;
908 } else {
909 husb->isoc_iface = isoc_iface;
910 husb->isoc_in_ep = isoc_in_ep;
911 husb->isoc_out_ep = isoc_out_ep;
912 }
913 }
914 }
915 #endif
916
917 rwlock_init(&husb->completion_lock);
918
919 for (i = 0; i < 4; i++) {
920 skb_queue_head_init(&husb->transmit_q[i]);
921 _urb_queue_init(&husb->pending_q[i]);
922 _urb_queue_init(&husb->completed_q[i]);
923 }
924
925 /* Initialize and register HCI device */
926 hdev = hci_alloc_dev();
927 if (!hdev) {
928 BT_ERR("Can't allocate HCI device");
929 goto probe_error;
930 }
931
932 husb->hdev = hdev;
933
934 hdev->type = HCI_USB;
935 hdev->driver_data = husb;
936 SET_HCIDEV_DEV(hdev, &intf->dev);
937
938 hdev->open = hci_usb_open;
939 hdev->close = hci_usb_close;
940 hdev->flush = hci_usb_flush;
941 hdev->send = hci_usb_send_frame;
942 hdev->destruct = hci_usb_destruct;
943 hdev->notify = hci_usb_notify;
944
945 hdev->owner = THIS_MODULE;
946
947 if (reset || id->driver_info & HCI_RESET)
948 set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
949
950 if (force_scofix || id->driver_info & HCI_WRONG_SCO_MTU) {
951 if (!disable_scofix)
952 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
953 }
954
955 if (id->driver_info & HCI_SNIFFER) {
956 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
957 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
958 }
959
960 if (id->driver_info & HCI_BCM92035) {
961 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
962 struct sk_buff *skb;
963
964 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
965 if (skb) {
966 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
967 skb_queue_tail(&hdev->driver_init, skb);
968 }
969 }
970
971 if (hci_register_dev(hdev) < 0) {
972 BT_ERR("Can't register HCI device");
973 hci_free_dev(hdev);
974 goto probe_error;
975 }
976
977 usb_set_intfdata(intf, husb);
978 return 0;
979
980 probe_error:
981 if (husb->isoc_iface)
982 usb_driver_release_interface(&hci_usb_driver, husb->isoc_iface);
983 kfree(husb);
984
985 done:
986 return -EIO;
987 }
988
989 static void hci_usb_disconnect(struct usb_interface *intf)
990 {
991 struct hci_usb *husb = usb_get_intfdata(intf);
992 struct hci_dev *hdev;
993
994 if (!husb || intf == husb->isoc_iface)
995 return;
996
997 usb_set_intfdata(intf, NULL);
998 hdev = husb->hdev;
999
1000 BT_DBG("%s", hdev->name);
1001
1002 hci_usb_close(hdev);
1003
1004 if (husb->isoc_iface)
1005 usb_driver_release_interface(&hci_usb_driver, husb->isoc_iface);
1006
1007 if (hci_unregister_dev(hdev) < 0)
1008 BT_ERR("Can't unregister HCI device %s", hdev->name);
1009
1010 hci_free_dev(hdev);
1011 }
1012
1013 static int hci_usb_suspend(struct usb_interface *intf, pm_message_t message)
1014 {
1015 struct hci_usb *husb = usb_get_intfdata(intf);
1016 struct list_head killed;
1017 unsigned long flags;
1018 int i;
1019
1020 if (!husb || intf == husb->isoc_iface)
1021 return 0;
1022
1023 hci_suspend_dev(husb->hdev);
1024
1025 INIT_LIST_HEAD(&killed);
1026
1027 for (i = 0; i < 4; i++) {
1028 struct _urb_queue *q = &husb->pending_q[i];
1029 struct _urb *_urb, *_tmp;
1030
1031 while ((_urb = _urb_dequeue(q))) {
1032 /* reset queue since _urb_dequeue sets it to NULL */
1033 _urb->queue = q;
1034 usb_kill_urb(&_urb->urb);
1035 list_add(&_urb->list, &killed);
1036 }
1037
1038 spin_lock_irqsave(&q->lock, flags);
1039
1040 list_for_each_entry_safe(_urb, _tmp, &killed, list) {
1041 list_move_tail(&_urb->list, &q->head);
1042 }
1043
1044 spin_unlock_irqrestore(&q->lock, flags);
1045 }
1046
1047 return 0;
1048 }
1049
1050 static int hci_usb_resume(struct usb_interface *intf)
1051 {
1052 struct hci_usb *husb = usb_get_intfdata(intf);
1053 unsigned long flags;
1054 int i, err = 0;
1055
1056 if (!husb || intf == husb->isoc_iface)
1057 return 0;
1058
1059 for (i = 0; i < 4; i++) {
1060 struct _urb_queue *q = &husb->pending_q[i];
1061 struct _urb *_urb;
1062
1063 spin_lock_irqsave(&q->lock, flags);
1064
1065 list_for_each_entry(_urb, &q->head, list) {
1066 err = usb_submit_urb(&_urb->urb, GFP_ATOMIC);
1067 if (err)
1068 break;
1069 }
1070
1071 spin_unlock_irqrestore(&q->lock, flags);
1072
1073 if (err)
1074 return -EIO;
1075 }
1076
1077 hci_resume_dev(husb->hdev);
1078
1079 return 0;
1080 }
1081
1082 static struct usb_driver hci_usb_driver = {
1083 .name = "hci_usb",
1084 .probe = hci_usb_probe,
1085 .disconnect = hci_usb_disconnect,
1086 .suspend = hci_usb_suspend,
1087 .resume = hci_usb_resume,
1088 .id_table = bluetooth_ids,
1089 };
1090
1091 static int __init hci_usb_init(void)
1092 {
1093 int err;
1094
1095 BT_INFO("HCI USB driver ver %s", VERSION);
1096
1097 if ((err = usb_register(&hci_usb_driver)) < 0)
1098 BT_ERR("Failed to register HCI USB driver");
1099
1100 return err;
1101 }
1102
1103 static void __exit hci_usb_exit(void)
1104 {
1105 usb_deregister(&hci_usb_driver);
1106 }
1107
1108 module_init(hci_usb_init);
1109 module_exit(hci_usb_exit);
1110
1111 module_param(ignore, bool, 0644);
1112 MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");
1113
1114 module_param(ignore_dga, bool, 0644);
1115 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1116
1117 module_param(ignore_csr, bool, 0644);
1118 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1119
1120 module_param(ignore_sniffer, bool, 0644);
1121 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1122
1123 module_param(disable_scofix, bool, 0644);
1124 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1125
1126 module_param(force_scofix, bool, 0644);
1127 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1128
1129 module_param(reset, bool, 0644);
1130 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1131
1132 #ifdef CONFIG_BT_HCIUSB_SCO
1133 module_param(isoc, int, 0644);
1134 MODULE_PARM_DESC(isoc, "Set isochronous transfers for SCO over HCI support");
1135 #endif
1136
1137 MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>, Marcel Holtmann <marcel@holtmann.org>");
1138 MODULE_DESCRIPTION("Bluetooth HCI USB driver ver " VERSION);
1139 MODULE_VERSION(VERSION);
1140 MODULE_LICENSE("GPL");
Support for the Chinese Samsung S3C2440 based development boards