]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
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> | |
1da177e4 LT |
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"); |