Commit | Line | Data |
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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 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | ||
25 | #include <linux/types.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/kernel.h> | |
1da177e4 LT |
28 | #include <linux/sched.h> |
29 | #include <linux/slab.h> | |
30 | #include <linux/poll.h> | |
31 | #include <linux/fcntl.h> | |
32 | #include <linux/skbuff.h> | |
33 | #include <linux/socket.h> | |
34 | #include <linux/ioctl.h> | |
35 | #include <linux/file.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/wait.h> | |
38 | #include <net/sock.h> | |
39 | ||
40 | #include <linux/input.h> | |
41 | ||
42 | #include <net/bluetooth/bluetooth.h> | |
43 | #include <net/bluetooth/l2cap.h> | |
44 | ||
45 | #include "hidp.h" | |
46 | ||
47 | #ifndef CONFIG_BT_HIDP_DEBUG | |
48 | #undef BT_DBG | |
49 | #define BT_DBG(D...) | |
50 | #endif | |
51 | ||
52 | #define VERSION "1.1" | |
53 | ||
54 | static DECLARE_RWSEM(hidp_session_sem); | |
55 | static LIST_HEAD(hidp_session_list); | |
56 | ||
57 | static unsigned char hidp_keycode[256] = { | |
58 | 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, | |
59 | 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, | |
60 | 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, | |
61 | 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, | |
62 | 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, | |
63 | 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, | |
64 | 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, | |
65 | 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, | |
66 | 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0, | |
67 | 122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
68 | 0, 0, 0, 0, 0, 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 | 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, | |
73 | 150,158,159,128,136,177,178,176,142,152,173,140 | |
74 | }; | |
75 | ||
76 | static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }; | |
77 | ||
78 | static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr) | |
79 | { | |
80 | struct hidp_session *session; | |
81 | struct list_head *p; | |
82 | ||
83 | BT_DBG(""); | |
84 | ||
85 | list_for_each(p, &hidp_session_list) { | |
86 | session = list_entry(p, struct hidp_session, list); | |
87 | if (!bacmp(bdaddr, &session->bdaddr)) | |
88 | return session; | |
89 | } | |
90 | return NULL; | |
91 | } | |
92 | ||
93 | static void __hidp_link_session(struct hidp_session *session) | |
94 | { | |
95 | __module_get(THIS_MODULE); | |
96 | list_add(&session->list, &hidp_session_list); | |
97 | } | |
98 | ||
99 | static void __hidp_unlink_session(struct hidp_session *session) | |
100 | { | |
101 | list_del(&session->list); | |
102 | module_put(THIS_MODULE); | |
103 | } | |
104 | ||
105 | static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci) | |
106 | { | |
107 | bacpy(&ci->bdaddr, &session->bdaddr); | |
108 | ||
109 | ci->flags = session->flags; | |
110 | ci->state = session->state; | |
111 | ||
112 | ci->vendor = 0x0000; | |
113 | ci->product = 0x0000; | |
114 | ci->version = 0x0000; | |
115 | memset(ci->name, 0, 128); | |
116 | ||
117 | if (session->input) { | |
118 | ci->vendor = session->input->id.vendor; | |
119 | ci->product = session->input->id.product; | |
120 | ci->version = session->input->id.version; | |
121 | if (session->input->name) | |
122 | strncpy(ci->name, session->input->name, 128); | |
123 | else | |
124 | strncpy(ci->name, "HID Boot Device", 128); | |
125 | } | |
126 | } | |
127 | ||
128 | static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) | |
129 | { | |
130 | struct hidp_session *session = dev->private; | |
131 | struct sk_buff *skb; | |
132 | unsigned char newleds; | |
133 | ||
134 | BT_DBG("input %p type %d code %d value %d", dev, type, code, value); | |
135 | ||
136 | if (type != EV_LED) | |
137 | return -1; | |
138 | ||
139 | newleds = (!!test_bit(LED_KANA, dev->led) << 3) | | |
140 | (!!test_bit(LED_COMPOSE, dev->led) << 3) | | |
141 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | | |
142 | (!!test_bit(LED_CAPSL, dev->led) << 1) | | |
143 | (!!test_bit(LED_NUML, dev->led)); | |
144 | ||
145 | if (session->leds == newleds) | |
146 | return 0; | |
147 | ||
148 | session->leds = newleds; | |
149 | ||
150 | if (!(skb = alloc_skb(3, GFP_ATOMIC))) { | |
151 | BT_ERR("Can't allocate memory for new frame"); | |
152 | return -ENOMEM; | |
153 | } | |
154 | ||
155 | *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; | |
156 | *skb_put(skb, 1) = 0x01; | |
157 | *skb_put(skb, 1) = newleds; | |
158 | ||
159 | skb_queue_tail(&session->intr_transmit, skb); | |
160 | ||
161 | hidp_schedule(session); | |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) | |
167 | { | |
168 | struct input_dev *dev = session->input; | |
169 | unsigned char *keys = session->keys; | |
170 | unsigned char *udata = skb->data + 1; | |
171 | signed char *sdata = skb->data + 1; | |
172 | int i, size = skb->len - 1; | |
173 | ||
174 | switch (skb->data[0]) { | |
175 | case 0x01: /* Keyboard report */ | |
176 | for (i = 0; i < 8; i++) | |
177 | input_report_key(dev, hidp_keycode[i + 224], (udata[0] >> i) & 1); | |
178 | ||
179 | /* If all the key codes have been set to 0x01, it means | |
180 | * too many keys were pressed at the same time. */ | |
181 | if (!memcmp(udata + 2, hidp_mkeyspat, 6)) | |
182 | break; | |
183 | ||
184 | for (i = 2; i < 8; i++) { | |
185 | if (keys[i] > 3 && memscan(udata + 2, keys[i], 6) == udata + 8) { | |
186 | if (hidp_keycode[keys[i]]) | |
187 | input_report_key(dev, hidp_keycode[keys[i]], 0); | |
188 | else | |
189 | BT_ERR("Unknown key (scancode %#x) released.", keys[i]); | |
190 | } | |
191 | ||
192 | if (udata[i] > 3 && memscan(keys + 2, udata[i], 6) == keys + 8) { | |
193 | if (hidp_keycode[udata[i]]) | |
194 | input_report_key(dev, hidp_keycode[udata[i]], 1); | |
195 | else | |
196 | BT_ERR("Unknown key (scancode %#x) pressed.", udata[i]); | |
197 | } | |
198 | } | |
199 | ||
200 | memcpy(keys, udata, 8); | |
201 | break; | |
202 | ||
203 | case 0x02: /* Mouse report */ | |
204 | input_report_key(dev, BTN_LEFT, sdata[0] & 0x01); | |
205 | input_report_key(dev, BTN_RIGHT, sdata[0] & 0x02); | |
206 | input_report_key(dev, BTN_MIDDLE, sdata[0] & 0x04); | |
207 | input_report_key(dev, BTN_SIDE, sdata[0] & 0x08); | |
208 | input_report_key(dev, BTN_EXTRA, sdata[0] & 0x10); | |
209 | ||
210 | input_report_rel(dev, REL_X, sdata[1]); | |
211 | input_report_rel(dev, REL_Y, sdata[2]); | |
212 | ||
213 | if (size > 3) | |
214 | input_report_rel(dev, REL_WHEEL, sdata[3]); | |
215 | break; | |
216 | } | |
217 | ||
218 | input_sync(dev); | |
219 | } | |
220 | ||
221 | static void hidp_idle_timeout(unsigned long arg) | |
222 | { | |
223 | struct hidp_session *session = (struct hidp_session *) arg; | |
224 | ||
225 | atomic_inc(&session->terminate); | |
226 | hidp_schedule(session); | |
227 | } | |
228 | ||
229 | static inline void hidp_set_timer(struct hidp_session *session) | |
230 | { | |
231 | if (session->idle_to > 0) | |
232 | mod_timer(&session->timer, jiffies + HZ * session->idle_to); | |
233 | } | |
234 | ||
235 | static inline void hidp_del_timer(struct hidp_session *session) | |
236 | { | |
237 | if (session->idle_to > 0) | |
238 | del_timer(&session->timer); | |
239 | } | |
240 | ||
241 | static int __hidp_send_ctrl_message(struct hidp_session *session, | |
242 | unsigned char hdr, unsigned char *data, int size) | |
243 | { | |
244 | struct sk_buff *skb; | |
245 | ||
246 | BT_DBG("session %p data %p size %d", session, data, size); | |
247 | ||
248 | if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) { | |
249 | BT_ERR("Can't allocate memory for new frame"); | |
250 | return -ENOMEM; | |
251 | } | |
252 | ||
253 | *skb_put(skb, 1) = hdr; | |
254 | if (data && size > 0) | |
255 | memcpy(skb_put(skb, size), data, size); | |
256 | ||
257 | skb_queue_tail(&session->ctrl_transmit, skb); | |
258 | ||
259 | return 0; | |
260 | } | |
261 | ||
262 | static int inline hidp_send_ctrl_message(struct hidp_session *session, | |
263 | unsigned char hdr, unsigned char *data, int size) | |
264 | { | |
265 | int err; | |
266 | ||
267 | err = __hidp_send_ctrl_message(session, hdr, data, size); | |
268 | ||
269 | hidp_schedule(session); | |
270 | ||
271 | return err; | |
272 | } | |
273 | ||
274 | static inline void hidp_process_handshake(struct hidp_session *session, unsigned char param) | |
275 | { | |
276 | BT_DBG("session %p param 0x%02x", session, param); | |
277 | ||
278 | switch (param) { | |
279 | case HIDP_HSHK_SUCCESSFUL: | |
280 | /* FIXME: Call into SET_ GET_ handlers here */ | |
281 | break; | |
282 | ||
283 | case HIDP_HSHK_NOT_READY: | |
284 | case HIDP_HSHK_ERR_INVALID_REPORT_ID: | |
285 | case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST: | |
286 | case HIDP_HSHK_ERR_INVALID_PARAMETER: | |
287 | /* FIXME: Call into SET_ GET_ handlers here */ | |
288 | break; | |
289 | ||
290 | case HIDP_HSHK_ERR_UNKNOWN: | |
291 | break; | |
292 | ||
293 | case HIDP_HSHK_ERR_FATAL: | |
294 | /* Device requests a reboot, as this is the only way this error | |
295 | * can be recovered. */ | |
296 | __hidp_send_ctrl_message(session, | |
297 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0); | |
298 | break; | |
299 | ||
300 | default: | |
301 | __hidp_send_ctrl_message(session, | |
302 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
303 | break; | |
304 | } | |
305 | } | |
306 | ||
307 | static inline void hidp_process_hid_control(struct hidp_session *session, unsigned char param) | |
308 | { | |
309 | BT_DBG("session %p param 0x%02x", session, param); | |
310 | ||
311 | switch (param) { | |
312 | case HIDP_CTRL_NOP: | |
313 | break; | |
314 | ||
315 | case HIDP_CTRL_VIRTUAL_CABLE_UNPLUG: | |
316 | /* Flush the transmit queues */ | |
317 | skb_queue_purge(&session->ctrl_transmit); | |
318 | skb_queue_purge(&session->intr_transmit); | |
319 | ||
320 | /* Kill session thread */ | |
321 | atomic_inc(&session->terminate); | |
322 | break; | |
323 | ||
324 | case HIDP_CTRL_HARD_RESET: | |
325 | case HIDP_CTRL_SOFT_RESET: | |
326 | case HIDP_CTRL_SUSPEND: | |
327 | case HIDP_CTRL_EXIT_SUSPEND: | |
328 | /* FIXME: We have to parse these and return no error */ | |
329 | break; | |
330 | ||
331 | default: | |
332 | __hidp_send_ctrl_message(session, | |
333 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
334 | break; | |
335 | } | |
336 | } | |
337 | ||
338 | static inline void hidp_process_data(struct hidp_session *session, struct sk_buff *skb, unsigned char param) | |
339 | { | |
340 | BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param); | |
341 | ||
342 | switch (param) { | |
343 | case HIDP_DATA_RTYPE_INPUT: | |
344 | hidp_set_timer(session); | |
345 | ||
346 | if (session->input) | |
347 | hidp_input_report(session, skb); | |
348 | break; | |
349 | ||
350 | case HIDP_DATA_RTYPE_OTHER: | |
351 | case HIDP_DATA_RTYPE_OUPUT: | |
352 | case HIDP_DATA_RTYPE_FEATURE: | |
353 | break; | |
354 | ||
355 | default: | |
356 | __hidp_send_ctrl_message(session, | |
357 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
358 | } | |
359 | } | |
360 | ||
361 | static inline void hidp_recv_ctrl_frame(struct hidp_session *session, struct sk_buff *skb) | |
362 | { | |
363 | unsigned char hdr, type, param; | |
364 | ||
365 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
366 | ||
367 | hdr = skb->data[0]; | |
368 | skb_pull(skb, 1); | |
369 | ||
370 | type = hdr & HIDP_HEADER_TRANS_MASK; | |
371 | param = hdr & HIDP_HEADER_PARAM_MASK; | |
372 | ||
373 | switch (type) { | |
374 | case HIDP_TRANS_HANDSHAKE: | |
375 | hidp_process_handshake(session, param); | |
376 | break; | |
377 | ||
378 | case HIDP_TRANS_HID_CONTROL: | |
379 | hidp_process_hid_control(session, param); | |
380 | break; | |
381 | ||
382 | case HIDP_TRANS_DATA: | |
383 | hidp_process_data(session, skb, param); | |
384 | break; | |
385 | ||
386 | default: | |
387 | __hidp_send_ctrl_message(session, | |
388 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0); | |
389 | break; | |
390 | } | |
391 | ||
392 | kfree_skb(skb); | |
393 | } | |
394 | ||
395 | static inline void hidp_recv_intr_frame(struct hidp_session *session, struct sk_buff *skb) | |
396 | { | |
397 | unsigned char hdr; | |
398 | ||
399 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
400 | ||
401 | hdr = skb->data[0]; | |
402 | skb_pull(skb, 1); | |
403 | ||
404 | if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) { | |
405 | hidp_set_timer(session); | |
406 | if (session->input) | |
407 | hidp_input_report(session, skb); | |
408 | } else { | |
409 | BT_DBG("Unsupported protocol header 0x%02x", hdr); | |
410 | } | |
411 | ||
412 | kfree_skb(skb); | |
413 | } | |
414 | ||
415 | static int hidp_send_frame(struct socket *sock, unsigned char *data, int len) | |
416 | { | |
417 | struct kvec iv = { data, len }; | |
418 | struct msghdr msg; | |
419 | ||
420 | BT_DBG("sock %p data %p len %d", sock, data, len); | |
421 | ||
422 | if (!len) | |
423 | return 0; | |
424 | ||
425 | memset(&msg, 0, sizeof(msg)); | |
426 | ||
427 | return kernel_sendmsg(sock, &msg, &iv, 1, len); | |
428 | } | |
429 | ||
b03efcfb | 430 | static void hidp_process_transmit(struct hidp_session *session) |
1da177e4 LT |
431 | { |
432 | struct sk_buff *skb; | |
433 | ||
434 | BT_DBG("session %p", session); | |
435 | ||
436 | while ((skb = skb_dequeue(&session->ctrl_transmit))) { | |
437 | if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) { | |
438 | skb_queue_head(&session->ctrl_transmit, skb); | |
439 | break; | |
440 | } | |
441 | ||
442 | hidp_set_timer(session); | |
443 | kfree_skb(skb); | |
444 | } | |
445 | ||
446 | while ((skb = skb_dequeue(&session->intr_transmit))) { | |
447 | if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) { | |
448 | skb_queue_head(&session->intr_transmit, skb); | |
449 | break; | |
450 | } | |
451 | ||
452 | hidp_set_timer(session); | |
453 | kfree_skb(skb); | |
454 | } | |
1da177e4 LT |
455 | } |
456 | ||
457 | static int hidp_session(void *arg) | |
458 | { | |
459 | struct hidp_session *session = arg; | |
460 | struct sock *ctrl_sk = session->ctrl_sock->sk; | |
461 | struct sock *intr_sk = session->intr_sock->sk; | |
462 | struct sk_buff *skb; | |
463 | int vendor = 0x0000, product = 0x0000; | |
464 | wait_queue_t ctrl_wait, intr_wait; | |
465 | ||
466 | BT_DBG("session %p", session); | |
467 | ||
468 | if (session->input) { | |
469 | vendor = session->input->id.vendor; | |
470 | product = session->input->id.product; | |
471 | } | |
472 | ||
473 | daemonize("khidpd_%04x%04x", vendor, product); | |
474 | set_user_nice(current, -15); | |
475 | current->flags |= PF_NOFREEZE; | |
476 | ||
477 | init_waitqueue_entry(&ctrl_wait, current); | |
478 | init_waitqueue_entry(&intr_wait, current); | |
479 | add_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait); | |
480 | add_wait_queue(intr_sk->sk_sleep, &intr_wait); | |
481 | while (!atomic_read(&session->terminate)) { | |
482 | set_current_state(TASK_INTERRUPTIBLE); | |
483 | ||
484 | if (ctrl_sk->sk_state != BT_CONNECTED || intr_sk->sk_state != BT_CONNECTED) | |
485 | break; | |
486 | ||
487 | while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) { | |
488 | skb_orphan(skb); | |
489 | hidp_recv_ctrl_frame(session, skb); | |
490 | } | |
491 | ||
492 | while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) { | |
493 | skb_orphan(skb); | |
494 | hidp_recv_intr_frame(session, skb); | |
495 | } | |
496 | ||
497 | hidp_process_transmit(session); | |
498 | ||
499 | schedule(); | |
500 | } | |
501 | set_current_state(TASK_RUNNING); | |
502 | remove_wait_queue(intr_sk->sk_sleep, &intr_wait); | |
503 | remove_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait); | |
504 | ||
505 | down_write(&hidp_session_sem); | |
506 | ||
507 | hidp_del_timer(session); | |
508 | ||
509 | if (intr_sk->sk_state != BT_CONNECTED) | |
510 | wait_event_timeout(*(ctrl_sk->sk_sleep), (ctrl_sk->sk_state == BT_CLOSED), HZ); | |
511 | ||
512 | fput(session->ctrl_sock->file); | |
513 | ||
514 | wait_event_timeout(*(intr_sk->sk_sleep), (intr_sk->sk_state == BT_CLOSED), HZ); | |
515 | ||
516 | fput(session->intr_sock->file); | |
517 | ||
518 | __hidp_unlink_session(session); | |
519 | ||
520 | if (session->input) { | |
521 | input_unregister_device(session->input); | |
34abf91f | 522 | session->input = NULL; |
1da177e4 LT |
523 | } |
524 | ||
525 | up_write(&hidp_session_sem); | |
526 | ||
527 | kfree(session); | |
528 | return 0; | |
529 | } | |
530 | ||
531 | static inline void hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req) | |
532 | { | |
533 | struct input_dev *input = session->input; | |
534 | int i; | |
535 | ||
536 | input->private = session; | |
537 | ||
34abf91f DT |
538 | input->name = "Bluetooth HID Boot Protocol Device"; |
539 | ||
1da177e4 LT |
540 | input->id.bustype = BUS_BLUETOOTH; |
541 | input->id.vendor = req->vendor; | |
542 | input->id.product = req->product; | |
543 | input->id.version = req->version; | |
544 | ||
545 | if (req->subclass & 0x40) { | |
546 | set_bit(EV_KEY, input->evbit); | |
547 | set_bit(EV_LED, input->evbit); | |
548 | set_bit(EV_REP, input->evbit); | |
549 | ||
550 | set_bit(LED_NUML, input->ledbit); | |
551 | set_bit(LED_CAPSL, input->ledbit); | |
552 | set_bit(LED_SCROLLL, input->ledbit); | |
553 | set_bit(LED_COMPOSE, input->ledbit); | |
554 | set_bit(LED_KANA, input->ledbit); | |
555 | ||
556 | for (i = 0; i < sizeof(hidp_keycode); i++) | |
557 | set_bit(hidp_keycode[i], input->keybit); | |
558 | clear_bit(0, input->keybit); | |
559 | } | |
560 | ||
561 | if (req->subclass & 0x80) { | |
562 | input->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); | |
563 | input->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE); | |
564 | input->relbit[0] = BIT(REL_X) | BIT(REL_Y); | |
565 | input->keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA); | |
566 | input->relbit[0] |= BIT(REL_WHEEL); | |
567 | } | |
568 | ||
569 | input->event = hidp_input_event; | |
570 | ||
571 | input_register_device(input); | |
572 | } | |
573 | ||
574 | int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) | |
575 | { | |
576 | struct hidp_session *session, *s; | |
577 | int err; | |
578 | ||
579 | BT_DBG(""); | |
580 | ||
581 | if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) || | |
582 | bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst)) | |
583 | return -ENOTUNIQ; | |
584 | ||
25ea6db0 | 585 | session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL); |
34abf91f | 586 | if (!session) |
1da177e4 | 587 | return -ENOMEM; |
1da177e4 | 588 | |
34abf91f | 589 | session->input = input_allocate_device(); |
1da177e4 LT |
590 | if (!session->input) { |
591 | kfree(session); | |
592 | return -ENOMEM; | |
593 | } | |
1da177e4 LT |
594 | |
595 | down_write(&hidp_session_sem); | |
596 | ||
597 | s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst); | |
598 | if (s && s->state == BT_CONNECTED) { | |
599 | err = -EEXIST; | |
600 | goto failed; | |
601 | } | |
602 | ||
603 | bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst); | |
604 | ||
605 | session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->omtu, l2cap_pi(ctrl_sock->sk)->imtu); | |
606 | session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->omtu, l2cap_pi(intr_sock->sk)->imtu); | |
607 | ||
608 | BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu); | |
609 | ||
610 | session->ctrl_sock = ctrl_sock; | |
611 | session->intr_sock = intr_sock; | |
612 | session->state = BT_CONNECTED; | |
613 | ||
614 | init_timer(&session->timer); | |
615 | ||
616 | session->timer.function = hidp_idle_timeout; | |
617 | session->timer.data = (unsigned long) session; | |
618 | ||
619 | skb_queue_head_init(&session->ctrl_transmit); | |
620 | skb_queue_head_init(&session->intr_transmit); | |
621 | ||
622 | session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); | |
623 | session->idle_to = req->idle_to; | |
624 | ||
625 | if (session->input) | |
626 | hidp_setup_input(session, req); | |
627 | ||
628 | __hidp_link_session(session); | |
629 | ||
630 | hidp_set_timer(session); | |
631 | ||
632 | err = kernel_thread(hidp_session, session, CLONE_KERNEL); | |
633 | if (err < 0) | |
634 | goto unlink; | |
635 | ||
636 | if (session->input) { | |
637 | hidp_send_ctrl_message(session, | |
638 | HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0); | |
639 | session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE); | |
640 | ||
641 | session->leds = 0xff; | |
642 | hidp_input_event(session->input, EV_LED, 0, 0); | |
643 | } | |
644 | ||
645 | up_write(&hidp_session_sem); | |
646 | return 0; | |
647 | ||
648 | unlink: | |
649 | hidp_del_timer(session); | |
650 | ||
651 | __hidp_unlink_session(session); | |
652 | ||
34abf91f | 653 | if (session->input) { |
1da177e4 | 654 | input_unregister_device(session->input); |
34abf91f DT |
655 | session->input = NULL; /* don't try to free it here */ |
656 | } | |
1da177e4 LT |
657 | |
658 | failed: | |
659 | up_write(&hidp_session_sem); | |
660 | ||
a51482bd | 661 | kfree(session->input); |
1da177e4 LT |
662 | kfree(session); |
663 | return err; | |
664 | } | |
665 | ||
666 | int hidp_del_connection(struct hidp_conndel_req *req) | |
667 | { | |
668 | struct hidp_session *session; | |
669 | int err = 0; | |
670 | ||
671 | BT_DBG(""); | |
672 | ||
673 | down_read(&hidp_session_sem); | |
674 | ||
675 | session = __hidp_get_session(&req->bdaddr); | |
676 | if (session) { | |
677 | if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) { | |
678 | hidp_send_ctrl_message(session, | |
679 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0); | |
680 | } else { | |
681 | /* Flush the transmit queues */ | |
682 | skb_queue_purge(&session->ctrl_transmit); | |
683 | skb_queue_purge(&session->intr_transmit); | |
684 | ||
685 | /* Kill session thread */ | |
686 | atomic_inc(&session->terminate); | |
687 | hidp_schedule(session); | |
688 | } | |
689 | } else | |
690 | err = -ENOENT; | |
691 | ||
692 | up_read(&hidp_session_sem); | |
693 | return err; | |
694 | } | |
695 | ||
696 | int hidp_get_connlist(struct hidp_connlist_req *req) | |
697 | { | |
698 | struct list_head *p; | |
699 | int err = 0, n = 0; | |
700 | ||
701 | BT_DBG(""); | |
702 | ||
703 | down_read(&hidp_session_sem); | |
704 | ||
705 | list_for_each(p, &hidp_session_list) { | |
706 | struct hidp_session *session; | |
707 | struct hidp_conninfo ci; | |
708 | ||
709 | session = list_entry(p, struct hidp_session, list); | |
710 | ||
711 | __hidp_copy_session(session, &ci); | |
712 | ||
713 | if (copy_to_user(req->ci, &ci, sizeof(ci))) { | |
714 | err = -EFAULT; | |
715 | break; | |
716 | } | |
717 | ||
718 | if (++n >= req->cnum) | |
719 | break; | |
720 | ||
721 | req->ci++; | |
722 | } | |
723 | req->cnum = n; | |
724 | ||
725 | up_read(&hidp_session_sem); | |
726 | return err; | |
727 | } | |
728 | ||
729 | int hidp_get_conninfo(struct hidp_conninfo *ci) | |
730 | { | |
731 | struct hidp_session *session; | |
732 | int err = 0; | |
733 | ||
734 | down_read(&hidp_session_sem); | |
735 | ||
736 | session = __hidp_get_session(&ci->bdaddr); | |
737 | if (session) | |
738 | __hidp_copy_session(session, ci); | |
739 | else | |
740 | err = -ENOENT; | |
741 | ||
742 | up_read(&hidp_session_sem); | |
743 | return err; | |
744 | } | |
745 | ||
746 | static int __init hidp_init(void) | |
747 | { | |
748 | l2cap_load(); | |
749 | ||
750 | BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION); | |
751 | ||
752 | return hidp_init_sockets(); | |
753 | } | |
754 | ||
755 | static void __exit hidp_exit(void) | |
756 | { | |
757 | hidp_cleanup_sockets(); | |
758 | } | |
759 | ||
760 | module_init(hidp_init); | |
761 | module_exit(hidp_exit); | |
762 | ||
763 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
764 | MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION); | |
765 | MODULE_VERSION(VERSION); | |
766 | MODULE_LICENSE("GPL"); | |
767 | MODULE_ALIAS("bt-proto-6"); |