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[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / net / bluetooth / hidp / core.c
blobaffbc55462e860f8a525ac9cecac09ca2cdf9ef9
1 /*
2 HIDP implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2003-2004 Marcel Holtmann <marcel@holtmann.org>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License version 2 as
7 published by the Free Software Foundation;
8
9 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
10 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
11 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
12 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
13 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
14 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
18 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
19 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
20 SOFTWARE IS DISCLAIMED.
21 */
22
23 #include <linux/config.h>
24 #include <linux/module.h>
25
26 #include <linux/types.h>
27 #include <linux/errno.h>
28 #include <linux/kernel.h>
29 #include <linux/sched.h>
30 #include <linux/slab.h>
31 #include <linux/poll.h>
32 #include <linux/fcntl.h>
33 #include <linux/skbuff.h>
34 #include <linux/socket.h>
35 #include <linux/ioctl.h>
36 #include <linux/file.h>
37 #include <linux/init.h>
38 #include <linux/wait.h>
39 #include <net/sock.h>
40
41 #include <linux/input.h>
42
43 #include <net/bluetooth/bluetooth.h>
44 #include <net/bluetooth/l2cap.h>
45
46 #include "hidp.h"
47
48 #ifndef CONFIG_BT_HIDP_DEBUG
49 #undef BT_DBG
50 #define BT_DBG(D...)
51 #endif
52
53 #define VERSION "1.1"
54
55 static DECLARE_RWSEM(hidp_session_sem);
56 static LIST_HEAD(hidp_session_list);
57
58 static unsigned char hidp_keycode[256] = {
59 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
60 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
61 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
62 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
63 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
64 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
65 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
66 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
67 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0,
68 122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
69 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
70 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
71 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
72 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
73 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
74 150,158,159,128,136,177,178,176,142,152,173,140
75 };
76
77 static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 };
78
79 static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr)
80 {
81 struct hidp_session *session;
82 struct list_head *p;
83
84 BT_DBG("");
85
86 list_for_each(p, &hidp_session_list) {
87 session = list_entry(p, struct hidp_session, list);
88 if (!bacmp(bdaddr, &session->bdaddr))
89 return session;
90 }
91 return NULL;
92 }
93
94 static void __hidp_link_session(struct hidp_session *session)
95 {
96 __module_get(THIS_MODULE);
97 list_add(&session->list, &hidp_session_list);
98 }
99
100 static void __hidp_unlink_session(struct hidp_session *session)
101 {
102 list_del(&session->list);
103 module_put(THIS_MODULE);
104 }
105
106 static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci)
107 {
108 bacpy(&ci->bdaddr, &session->bdaddr);
109
110 ci->flags = session->flags;
111 ci->state = session->state;
112
113 ci->vendor = 0x0000;
114 ci->product = 0x0000;
115 ci->version = 0x0000;
116 memset(ci->name, 0, 128);
117
118 if (session->input) {
119 ci->vendor = session->input->id.vendor;
120 ci->product = session->input->id.product;
121 ci->version = session->input->id.version;
122 if (session->input->name)
123 strncpy(ci->name, session->input->name, 128);
124 else
125 strncpy(ci->name, "HID Boot Device", 128);
126 }
127 }
128
129 static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
130 {
131 struct hidp_session *session = dev->private;
132 struct sk_buff *skb;
133 unsigned char newleds;
134
135 BT_DBG("input %p type %d code %d value %d", dev, type, code, value);
136
137 if (type != EV_LED)
138 return -1;
139
140 newleds = (!!test_bit(LED_KANA, dev->led) << 3) |
141 (!!test_bit(LED_COMPOSE, dev->led) << 3) |
142 (!!test_bit(LED_SCROLLL, dev->led) << 2) |
143 (!!test_bit(LED_CAPSL, dev->led) << 1) |
144 (!!test_bit(LED_NUML, dev->led));
145
146 if (session->leds == newleds)
147 return 0;
148
149 session->leds = newleds;
150
151 if (!(skb = alloc_skb(3, GFP_ATOMIC))) {
152 BT_ERR("Can't allocate memory for new frame");
153 return -ENOMEM;
154 }
155
156 *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT;
157 *skb_put(skb, 1) = 0x01;
158 *skb_put(skb, 1) = newleds;
159
160 skb_queue_tail(&session->intr_transmit, skb);
161
162 hidp_schedule(session);
163
164 return 0;
165 }
166
167 static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb)
168 {
169 struct input_dev *dev = session->input;
170 unsigned char *keys = session->keys;
171 unsigned char *udata = skb->data + 1;
172 signed char *sdata = skb->data + 1;
173 int i, size = skb->len - 1;
174
175 switch (skb->data[0]) {
176 case 0x01: /* Keyboard report */
177 for (i = 0; i < 8; i++)
178 input_report_key(dev, hidp_keycode[i + 224], (udata[0] >> i) & 1);
179
180 /* If all the key codes have been set to 0x01, it means
181 * too many keys were pressed at the same time. */
182 if (!memcmp(udata + 2, hidp_mkeyspat, 6))
183 break;
184
185 for (i = 2; i < 8; i++) {
186 if (keys[i] > 3 && memscan(udata + 2, keys[i], 6) == udata + 8) {
187 if (hidp_keycode[keys[i]])
188 input_report_key(dev, hidp_keycode[keys[i]], 0);
189 else
190 BT_ERR("Unknown key (scancode %#x) released.", keys[i]);
191 }
192
193 if (udata[i] > 3 && memscan(keys + 2, udata[i], 6) == keys + 8) {
194 if (hidp_keycode[udata[i]])
195 input_report_key(dev, hidp_keycode[udata[i]], 1);
196 else
197 BT_ERR("Unknown key (scancode %#x) pressed.", udata[i]);
198 }
199 }
200
201 memcpy(keys, udata, 8);
202 break;
203
204 case 0x02: /* Mouse report */
205 input_report_key(dev, BTN_LEFT, sdata[0] & 0x01);
206 input_report_key(dev, BTN_RIGHT, sdata[0] & 0x02);
207 input_report_key(dev, BTN_MIDDLE, sdata[0] & 0x04);
208 input_report_key(dev, BTN_SIDE, sdata[0] & 0x08);
209 input_report_key(dev, BTN_EXTRA, sdata[0] & 0x10);
210
211 input_report_rel(dev, REL_X, sdata[1]);
212 input_report_rel(dev, REL_Y, sdata[2]);
213
214 if (size > 3)
215 input_report_rel(dev, REL_WHEEL, sdata[3]);
216 break;
217 }
218
219 input_sync(dev);
220 }
221
222 static void hidp_idle_timeout(unsigned long arg)
223 {
224 struct hidp_session *session = (struct hidp_session *) arg;
225
226 atomic_inc(&session->terminate);
227 hidp_schedule(session);
228 }
229
230 static inline void hidp_set_timer(struct hidp_session *session)
231 {
232 if (session->idle_to > 0)
233 mod_timer(&session->timer, jiffies + HZ * session->idle_to);
234 }
235
236 static inline void hidp_del_timer(struct hidp_session *session)
237 {
238 if (session->idle_to > 0)
239 del_timer(&session->timer);
240 }
241
242 static int __hidp_send_ctrl_message(struct hidp_session *session,
243 unsigned char hdr, unsigned char *data, int size)
244 {
245 struct sk_buff *skb;
246
247 BT_DBG("session %p data %p size %d", session, data, size);
248
249 if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) {
250 BT_ERR("Can't allocate memory for new frame");
251 return -ENOMEM;
252 }
253
254 *skb_put(skb, 1) = hdr;
255 if (data && size > 0)
256 memcpy(skb_put(skb, size), data, size);
257
258 skb_queue_tail(&session->ctrl_transmit, skb);
259
260 return 0;
261 }
262
263 static int inline hidp_send_ctrl_message(struct hidp_session *session,
264 unsigned char hdr, unsigned char *data, int size)
265 {
266 int err;
267
268 err = __hidp_send_ctrl_message(session, hdr, data, size);
269
270 hidp_schedule(session);
271
272 return err;
273 }
274
275 static inline void hidp_process_handshake(struct hidp_session *session, unsigned char param)
276 {
277 BT_DBG("session %p param 0x%02x", session, param);
278
279 switch (param) {
280 case HIDP_HSHK_SUCCESSFUL:
281 /* FIXME: Call into SET_ GET_ handlers here */
282 break;
283
284 case HIDP_HSHK_NOT_READY:
285 case HIDP_HSHK_ERR_INVALID_REPORT_ID:
286 case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST:
287 case HIDP_HSHK_ERR_INVALID_PARAMETER:
288 /* FIXME: Call into SET_ GET_ handlers here */
289 break;
290
291 case HIDP_HSHK_ERR_UNKNOWN:
292 break;
293
294 case HIDP_HSHK_ERR_FATAL:
295 /* Device requests a reboot, as this is the only way this error
296 * can be recovered. */
297 __hidp_send_ctrl_message(session,
298 HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0);
299 break;
300
301 default:
302 __hidp_send_ctrl_message(session,
303 HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
304 break;
305 }
306 }
307
308 static inline void hidp_process_hid_control(struct hidp_session *session, unsigned char param)
309 {
310 BT_DBG("session %p param 0x%02x", session, param);
311
312 switch (param) {
313 case HIDP_CTRL_NOP:
314 break;
315
316 case HIDP_CTRL_VIRTUAL_CABLE_UNPLUG:
317 /* Flush the transmit queues */
318 skb_queue_purge(&session->ctrl_transmit);
319 skb_queue_purge(&session->intr_transmit);
320
321 /* Kill session thread */
322 atomic_inc(&session->terminate);
323 break;
324
325 case HIDP_CTRL_HARD_RESET:
326 case HIDP_CTRL_SOFT_RESET:
327 case HIDP_CTRL_SUSPEND:
328 case HIDP_CTRL_EXIT_SUSPEND:
329 /* FIXME: We have to parse these and return no error */
330 break;
331
332 default:
333 __hidp_send_ctrl_message(session,
334 HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
335 break;
336 }
337 }
338
339 static inline void hidp_process_data(struct hidp_session *session, struct sk_buff *skb, unsigned char param)
340 {
341 BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param);
342
343 switch (param) {
344 case HIDP_DATA_RTYPE_INPUT:
345 hidp_set_timer(session);
346
347 if (session->input)
348 hidp_input_report(session, skb);
349 break;
350
351 case HIDP_DATA_RTYPE_OTHER:
352 case HIDP_DATA_RTYPE_OUPUT:
353 case HIDP_DATA_RTYPE_FEATURE:
354 break;
355
356 default:
357 __hidp_send_ctrl_message(session,
358 HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
359 }
360 }
361
362 static inline void hidp_recv_ctrl_frame(struct hidp_session *session, struct sk_buff *skb)
363 {
364 unsigned char hdr, type, param;
365
366 BT_DBG("session %p skb %p len %d", session, skb, skb->len);
367
368 hdr = skb->data[0];
369 skb_pull(skb, 1);
370
371 type = hdr & HIDP_HEADER_TRANS_MASK;
372 param = hdr & HIDP_HEADER_PARAM_MASK;
373
374 switch (type) {
375 case HIDP_TRANS_HANDSHAKE:
376 hidp_process_handshake(session, param);
377 break;
378
379 case HIDP_TRANS_HID_CONTROL:
380 hidp_process_hid_control(session, param);
381 break;
382
383 case HIDP_TRANS_DATA:
384 hidp_process_data(session, skb, param);
385 break;
386
387 default:
388 __hidp_send_ctrl_message(session,
389 HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0);
390 break;
391 }
392
393 kfree_skb(skb);
394 }
395
396 static inline void hidp_recv_intr_frame(struct hidp_session *session, struct sk_buff *skb)
397 {
398 unsigned char hdr;
399
400 BT_DBG("session %p skb %p len %d", session, skb, skb->len);
401
402 hdr = skb->data[0];
403 skb_pull(skb, 1);
404
405 if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) {
406 hidp_set_timer(session);
407 if (session->input)
408 hidp_input_report(session, skb);
409 } else {
410 BT_DBG("Unsupported protocol header 0x%02x", hdr);
411 }
412
413 kfree_skb(skb);
414 }
415
416 static int hidp_send_frame(struct socket *sock, unsigned char *data, int len)
417 {
418 struct kvec iv = { data, len };
419 struct msghdr msg;
420
421 BT_DBG("sock %p data %p len %d", sock, data, len);
422
423 if (!len)
424 return 0;
425
426 memset(&msg, 0, sizeof(msg));
427
428 return kernel_sendmsg(sock, &msg, &iv, 1, len);
429 }
430
431 static int hidp_process_transmit(struct hidp_session *session)
432 {
433 struct sk_buff *skb;
434
435 BT_DBG("session %p", session);
436
437 while ((skb = skb_dequeue(&session->ctrl_transmit))) {
438 if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) {
439 skb_queue_head(&session->ctrl_transmit, skb);
440 break;
441 }
442
443 hidp_set_timer(session);
444 kfree_skb(skb);
445 }
446
447 while ((skb = skb_dequeue(&session->intr_transmit))) {
448 if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) {
449 skb_queue_head(&session->intr_transmit, skb);
450 break;
451 }
452
453 hidp_set_timer(session);
454 kfree_skb(skb);
455 }
456
457 return skb_queue_len(&session->ctrl_transmit) +
458 skb_queue_len(&session->intr_transmit);
459 }
460
461 static int hidp_session(void *arg)
462 {
463 struct hidp_session *session = arg;
464 struct sock *ctrl_sk = session->ctrl_sock->sk;
465 struct sock *intr_sk = session->intr_sock->sk;
466 struct sk_buff *skb;
467 int vendor = 0x0000, product = 0x0000;
468 wait_queue_t ctrl_wait, intr_wait;
469
470 BT_DBG("session %p", session);
471
472 if (session->input) {
473 vendor = session->input->id.vendor;
474 product = session->input->id.product;
475 }
476
477 daemonize("khidpd_%04x%04x", vendor, product);
478 set_user_nice(current, -15);
479 current->flags |= PF_NOFREEZE;
480
481 init_waitqueue_entry(&ctrl_wait, current);
482 init_waitqueue_entry(&intr_wait, current);
483 add_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait);
484 add_wait_queue(intr_sk->sk_sleep, &intr_wait);
485 while (!atomic_read(&session->terminate)) {
486 set_current_state(TASK_INTERRUPTIBLE);
487
488 if (ctrl_sk->sk_state != BT_CONNECTED || intr_sk->sk_state != BT_CONNECTED)
489 break;
490
491 while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) {
492 skb_orphan(skb);
493 hidp_recv_ctrl_frame(session, skb);
494 }
495
496 while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) {
497 skb_orphan(skb);
498 hidp_recv_intr_frame(session, skb);
499 }
500
501 hidp_process_transmit(session);
502
503 schedule();
504 }
505 set_current_state(TASK_RUNNING);
506 remove_wait_queue(intr_sk->sk_sleep, &intr_wait);
507 remove_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait);
508
509 down_write(&hidp_session_sem);
510
511 hidp_del_timer(session);
512
513 if (intr_sk->sk_state != BT_CONNECTED)
514 wait_event_timeout(*(ctrl_sk->sk_sleep), (ctrl_sk->sk_state == BT_CLOSED), HZ);
515
516 fput(session->ctrl_sock->file);
517
518 wait_event_timeout(*(intr_sk->sk_sleep), (intr_sk->sk_state == BT_CLOSED), HZ);
519
520 fput(session->intr_sock->file);
521
522 __hidp_unlink_session(session);
523
524 if (session->input) {
525 input_unregister_device(session->input);
526 kfree(session->input);
527 }
528
529 up_write(&hidp_session_sem);
530
531 kfree(session);
532 return 0;
533 }
534
535 static inline void hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req)
536 {
537 struct input_dev *input = session->input;
538 int i;
539
540 input->private = session;
541
542 input->id.bustype = BUS_BLUETOOTH;
543 input->id.vendor = req->vendor;
544 input->id.product = req->product;
545 input->id.version = req->version;
546
547 if (req->subclass & 0x40) {
548 set_bit(EV_KEY, input->evbit);
549 set_bit(EV_LED, input->evbit);
550 set_bit(EV_REP, input->evbit);
551
552 set_bit(LED_NUML, input->ledbit);
553 set_bit(LED_CAPSL, input->ledbit);
554 set_bit(LED_SCROLLL, input->ledbit);
555 set_bit(LED_COMPOSE, input->ledbit);
556 set_bit(LED_KANA, input->ledbit);
557
558 for (i = 0; i < sizeof(hidp_keycode); i++)
559 set_bit(hidp_keycode[i], input->keybit);
560 clear_bit(0, input->keybit);
561 }
562
563 if (req->subclass & 0x80) {
564 input->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
565 input->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
566 input->relbit[0] = BIT(REL_X) | BIT(REL_Y);
567 input->keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA);
568 input->relbit[0] |= BIT(REL_WHEEL);
569 }
570
571 input->event = hidp_input_event;
572
573 input_register_device(input);
574 }
575
576 int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock)
577 {
578 struct hidp_session *session, *s;
579 int err;
580
581 BT_DBG("");
582
583 if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) ||
584 bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst))
585 return -ENOTUNIQ;
586
587 session = kmalloc(sizeof(struct hidp_session), GFP_KERNEL);
588 if (!session)
589 return -ENOMEM;
590 memset(session, 0, sizeof(struct hidp_session));
591
592 session->input = kmalloc(sizeof(struct input_dev), GFP_KERNEL);
593 if (!session->input) {
594 kfree(session);
595 return -ENOMEM;
596 }
597 memset(session->input, 0, sizeof(struct input_dev));
598
599 down_write(&hidp_session_sem);
600
601 s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst);
602 if (s && s->state == BT_CONNECTED) {
603 err = -EEXIST;
604 goto failed;
605 }
606
607 bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst);
608
609 session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->omtu, l2cap_pi(ctrl_sock->sk)->imtu);
610 session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->omtu, l2cap_pi(intr_sock->sk)->imtu);
611
612 BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu);
613
614 session->ctrl_sock = ctrl_sock;
615 session->intr_sock = intr_sock;
616 session->state = BT_CONNECTED;
617
618 init_timer(&session->timer);
619
620 session->timer.function = hidp_idle_timeout;
621 session->timer.data = (unsigned long) session;
622
623 skb_queue_head_init(&session->ctrl_transmit);
624 skb_queue_head_init(&session->intr_transmit);
625
626 session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID);
627 session->idle_to = req->idle_to;
628
629 if (session->input)
630 hidp_setup_input(session, req);
631
632 __hidp_link_session(session);
633
634 hidp_set_timer(session);
635
636 err = kernel_thread(hidp_session, session, CLONE_KERNEL);
637 if (err < 0)
638 goto unlink;
639
640 if (session->input) {
641 hidp_send_ctrl_message(session,
642 HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0);
643 session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE);
644
645 session->leds = 0xff;
646 hidp_input_event(session->input, EV_LED, 0, 0);
647 }
648
649 up_write(&hidp_session_sem);
650 return 0;
651
652 unlink:
653 hidp_del_timer(session);
654
655 __hidp_unlink_session(session);
656
657 if (session->input)
658 input_unregister_device(session->input);
659
660 failed:
661 up_write(&hidp_session_sem);
662
663 if (session->input)
664 kfree(session->input);
665
666 kfree(session);
667 return err;
668 }
669
670 int hidp_del_connection(struct hidp_conndel_req *req)
671 {
672 struct hidp_session *session;
673 int err = 0;
674
675 BT_DBG("");
676
677 down_read(&hidp_session_sem);
678
679 session = __hidp_get_session(&req->bdaddr);
680 if (session) {
681 if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) {
682 hidp_send_ctrl_message(session,
683 HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0);
684 } else {
685 /* Flush the transmit queues */
686 skb_queue_purge(&session->ctrl_transmit);
687 skb_queue_purge(&session->intr_transmit);
688
689 /* Kill session thread */
690 atomic_inc(&session->terminate);
691 hidp_schedule(session);
692 }
693 } else
694 err = -ENOENT;
695
696 up_read(&hidp_session_sem);
697 return err;
698 }
699
700 int hidp_get_connlist(struct hidp_connlist_req *req)
701 {
702 struct list_head *p;
703 int err = 0, n = 0;
704
705 BT_DBG("");
706
707 down_read(&hidp_session_sem);
708
709 list_for_each(p, &hidp_session_list) {
710 struct hidp_session *session;
711 struct hidp_conninfo ci;
712
713 session = list_entry(p, struct hidp_session, list);
714
715 __hidp_copy_session(session, &ci);
716
717 if (copy_to_user(req->ci, &ci, sizeof(ci))) {
718 err = -EFAULT;
719 break;
720 }
721
722 if (++n >= req->cnum)
723 break;
724
725 req->ci++;
726 }
727 req->cnum = n;
728
729 up_read(&hidp_session_sem);
730 return err;
731 }
732
733 int hidp_get_conninfo(struct hidp_conninfo *ci)
734 {
735 struct hidp_session *session;
736 int err = 0;
737
738 down_read(&hidp_session_sem);
739
740 session = __hidp_get_session(&ci->bdaddr);
741 if (session)
742 __hidp_copy_session(session, ci);
743 else
744 err = -ENOENT;
745
746 up_read(&hidp_session_sem);
747 return err;
748 }
749
750 static int __init hidp_init(void)
751 {
752 l2cap_load();
753
754 BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION);
755
756 return hidp_init_sockets();
757 }
758
759 static void __exit hidp_exit(void)
760 {
761 hidp_cleanup_sockets();
762 }
763
764 module_init(hidp_init);
765 module_exit(hidp_exit);
766
767 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
768 MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION);
769 MODULE_VERSION(VERSION);
770 MODULE_LICENSE("GPL");
771 MODULE_ALIAS("bt-proto-6");
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