Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 LT |
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 | |
8e87d142 YH |
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 | |
1da177e4 LT |
16 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
17 | ||
8e87d142 YH |
18 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
19 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
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> | |
83144186 | 31 | #include <linux/freezer.h> |
1da177e4 LT |
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> | |
e1aaadd4 | 42 | #include <linux/hid.h> |
1da177e4 LT |
43 | |
44 | #include <net/bluetooth/bluetooth.h> | |
0a85b964 | 45 | #include <net/bluetooth/hci_core.h> |
1da177e4 LT |
46 | #include <net/bluetooth/l2cap.h> |
47 | ||
48 | #include "hidp.h" | |
49 | ||
50 | #ifndef CONFIG_BT_HIDP_DEBUG | |
51 | #undef BT_DBG | |
52 | #define BT_DBG(D...) | |
53 | #endif | |
54 | ||
e1aaadd4 | 55 | #define VERSION "1.2" |
1da177e4 LT |
56 | |
57 | static DECLARE_RWSEM(hidp_session_sem); | |
58 | static LIST_HEAD(hidp_session_list); | |
59 | ||
60 | static unsigned char hidp_keycode[256] = { | |
61 | 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, | |
62 | 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, | |
63 | 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, | |
64 | 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, | |
65 | 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, | |
66 | 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, | |
67 | 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, | |
68 | 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, | |
69 | 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0, | |
70 | 122,123, 90, 91, 85, 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 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
74 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
75 | 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, | |
76 | 150,158,159,128,136,177,178,176,142,152,173,140 | |
77 | }; | |
78 | ||
79 | static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }; | |
80 | ||
81 | static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr) | |
82 | { | |
83 | struct hidp_session *session; | |
84 | struct list_head *p; | |
85 | ||
86 | BT_DBG(""); | |
87 | ||
88 | list_for_each(p, &hidp_session_list) { | |
89 | session = list_entry(p, struct hidp_session, list); | |
90 | if (!bacmp(bdaddr, &session->bdaddr)) | |
91 | return session; | |
92 | } | |
93 | return NULL; | |
94 | } | |
95 | ||
96 | static void __hidp_link_session(struct hidp_session *session) | |
97 | { | |
98 | __module_get(THIS_MODULE); | |
99 | list_add(&session->list, &hidp_session_list); | |
100 | } | |
101 | ||
102 | static void __hidp_unlink_session(struct hidp_session *session) | |
103 | { | |
104 | list_del(&session->list); | |
105 | module_put(THIS_MODULE); | |
106 | } | |
107 | ||
108 | static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci) | |
109 | { | |
110 | bacpy(&ci->bdaddr, &session->bdaddr); | |
111 | ||
112 | ci->flags = session->flags; | |
113 | ci->state = session->state; | |
114 | ||
115 | ci->vendor = 0x0000; | |
116 | ci->product = 0x0000; | |
117 | ci->version = 0x0000; | |
118 | memset(ci->name, 0, 128); | |
119 | ||
120 | if (session->input) { | |
121 | ci->vendor = session->input->id.vendor; | |
122 | ci->product = session->input->id.product; | |
123 | ci->version = session->input->id.version; | |
124 | if (session->input->name) | |
125 | strncpy(ci->name, session->input->name, 128); | |
126 | else | |
127 | strncpy(ci->name, "HID Boot Device", 128); | |
128 | } | |
e1aaadd4 MH |
129 | |
130 | if (session->hid) { | |
131 | ci->vendor = session->hid->vendor; | |
132 | ci->product = session->hid->product; | |
133 | ci->version = session->hid->version; | |
134 | strncpy(ci->name, session->hid->name, 128); | |
135 | } | |
1da177e4 LT |
136 | } |
137 | ||
e1aaadd4 MH |
138 | static inline int hidp_queue_event(struct hidp_session *session, struct input_dev *dev, |
139 | unsigned int type, unsigned int code, int value) | |
1da177e4 | 140 | { |
1da177e4 | 141 | unsigned char newleds; |
e1aaadd4 | 142 | struct sk_buff *skb; |
1da177e4 | 143 | |
e1aaadd4 | 144 | BT_DBG("session %p type %d code %d value %d", session, type, code, value); |
1da177e4 LT |
145 | |
146 | if (type != EV_LED) | |
147 | return -1; | |
148 | ||
149 | newleds = (!!test_bit(LED_KANA, dev->led) << 3) | | |
150 | (!!test_bit(LED_COMPOSE, dev->led) << 3) | | |
151 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | | |
152 | (!!test_bit(LED_CAPSL, dev->led) << 1) | | |
153 | (!!test_bit(LED_NUML, dev->led)); | |
154 | ||
155 | if (session->leds == newleds) | |
156 | return 0; | |
157 | ||
158 | session->leds = newleds; | |
159 | ||
160 | if (!(skb = alloc_skb(3, GFP_ATOMIC))) { | |
161 | BT_ERR("Can't allocate memory for new frame"); | |
162 | return -ENOMEM; | |
163 | } | |
164 | ||
165 | *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; | |
166 | *skb_put(skb, 1) = 0x01; | |
167 | *skb_put(skb, 1) = newleds; | |
168 | ||
169 | skb_queue_tail(&session->intr_transmit, skb); | |
170 | ||
171 | hidp_schedule(session); | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
e1aaadd4 MH |
176 | static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
177 | { | |
5be39466 | 178 | struct hid_device *hid = input_get_drvdata(dev); |
e1aaadd4 MH |
179 | struct hidp_session *session = hid->driver_data; |
180 | ||
181 | return hidp_queue_event(session, dev, type, code, value); | |
182 | } | |
183 | ||
184 | static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) | |
185 | { | |
5be39466 | 186 | struct hidp_session *session = input_get_drvdata(dev); |
e1aaadd4 MH |
187 | |
188 | return hidp_queue_event(session, dev, type, code, value); | |
189 | } | |
190 | ||
1da177e4 LT |
191 | static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) |
192 | { | |
193 | struct input_dev *dev = session->input; | |
194 | unsigned char *keys = session->keys; | |
195 | unsigned char *udata = skb->data + 1; | |
196 | signed char *sdata = skb->data + 1; | |
197 | int i, size = skb->len - 1; | |
198 | ||
199 | switch (skb->data[0]) { | |
200 | case 0x01: /* Keyboard report */ | |
201 | for (i = 0; i < 8; i++) | |
202 | input_report_key(dev, hidp_keycode[i + 224], (udata[0] >> i) & 1); | |
203 | ||
204 | /* If all the key codes have been set to 0x01, it means | |
205 | * too many keys were pressed at the same time. */ | |
206 | if (!memcmp(udata + 2, hidp_mkeyspat, 6)) | |
207 | break; | |
208 | ||
209 | for (i = 2; i < 8; i++) { | |
210 | if (keys[i] > 3 && memscan(udata + 2, keys[i], 6) == udata + 8) { | |
211 | if (hidp_keycode[keys[i]]) | |
212 | input_report_key(dev, hidp_keycode[keys[i]], 0); | |
213 | else | |
214 | BT_ERR("Unknown key (scancode %#x) released.", keys[i]); | |
215 | } | |
216 | ||
217 | if (udata[i] > 3 && memscan(keys + 2, udata[i], 6) == keys + 8) { | |
218 | if (hidp_keycode[udata[i]]) | |
219 | input_report_key(dev, hidp_keycode[udata[i]], 1); | |
220 | else | |
221 | BT_ERR("Unknown key (scancode %#x) pressed.", udata[i]); | |
222 | } | |
223 | } | |
224 | ||
225 | memcpy(keys, udata, 8); | |
226 | break; | |
227 | ||
228 | case 0x02: /* Mouse report */ | |
229 | input_report_key(dev, BTN_LEFT, sdata[0] & 0x01); | |
230 | input_report_key(dev, BTN_RIGHT, sdata[0] & 0x02); | |
231 | input_report_key(dev, BTN_MIDDLE, sdata[0] & 0x04); | |
232 | input_report_key(dev, BTN_SIDE, sdata[0] & 0x08); | |
233 | input_report_key(dev, BTN_EXTRA, sdata[0] & 0x10); | |
234 | ||
235 | input_report_rel(dev, REL_X, sdata[1]); | |
236 | input_report_rel(dev, REL_Y, sdata[2]); | |
237 | ||
238 | if (size > 3) | |
239 | input_report_rel(dev, REL_WHEEL, sdata[3]); | |
240 | break; | |
241 | } | |
242 | ||
243 | input_sync(dev); | |
244 | } | |
245 | ||
e1aaadd4 MH |
246 | static inline int hidp_queue_report(struct hidp_session *session, unsigned char *data, int size) |
247 | { | |
248 | struct sk_buff *skb; | |
249 | ||
6792b5ec | 250 | BT_DBG("session %p hid %p data %p size %d", session, session->hid, data, size); |
e1aaadd4 MH |
251 | |
252 | if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) { | |
253 | BT_ERR("Can't allocate memory for new frame"); | |
254 | return -ENOMEM; | |
255 | } | |
256 | ||
257 | *skb_put(skb, 1) = 0xa2; | |
258 | if (size > 0) | |
259 | memcpy(skb_put(skb, size), data, size); | |
260 | ||
261 | skb_queue_tail(&session->intr_transmit, skb); | |
262 | ||
263 | hidp_schedule(session); | |
264 | ||
265 | return 0; | |
266 | } | |
267 | ||
268 | static int hidp_send_report(struct hidp_session *session, struct hid_report *report) | |
269 | { | |
270 | unsigned char buf[32]; | |
271 | int rsize; | |
272 | ||
273 | rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
274 | if (rsize > sizeof(buf)) | |
275 | return -EIO; | |
276 | ||
277 | hid_output_report(report, buf); | |
278 | ||
279 | return hidp_queue_report(session, buf, rsize); | |
280 | } | |
281 | ||
1da177e4 LT |
282 | static void hidp_idle_timeout(unsigned long arg) |
283 | { | |
284 | struct hidp_session *session = (struct hidp_session *) arg; | |
285 | ||
286 | atomic_inc(&session->terminate); | |
287 | hidp_schedule(session); | |
288 | } | |
289 | ||
290 | static inline void hidp_set_timer(struct hidp_session *session) | |
291 | { | |
292 | if (session->idle_to > 0) | |
293 | mod_timer(&session->timer, jiffies + HZ * session->idle_to); | |
294 | } | |
295 | ||
296 | static inline void hidp_del_timer(struct hidp_session *session) | |
297 | { | |
298 | if (session->idle_to > 0) | |
299 | del_timer(&session->timer); | |
300 | } | |
301 | ||
302 | static int __hidp_send_ctrl_message(struct hidp_session *session, | |
303 | unsigned char hdr, unsigned char *data, int size) | |
304 | { | |
305 | struct sk_buff *skb; | |
306 | ||
307 | BT_DBG("session %p data %p size %d", session, data, size); | |
308 | ||
309 | if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) { | |
310 | BT_ERR("Can't allocate memory for new frame"); | |
311 | return -ENOMEM; | |
312 | } | |
313 | ||
314 | *skb_put(skb, 1) = hdr; | |
315 | if (data && size > 0) | |
316 | memcpy(skb_put(skb, size), data, size); | |
317 | ||
318 | skb_queue_tail(&session->ctrl_transmit, skb); | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
b6f99a21 | 323 | static inline int hidp_send_ctrl_message(struct hidp_session *session, |
1da177e4 LT |
324 | unsigned char hdr, unsigned char *data, int size) |
325 | { | |
326 | int err; | |
327 | ||
328 | err = __hidp_send_ctrl_message(session, hdr, data, size); | |
329 | ||
330 | hidp_schedule(session); | |
331 | ||
332 | return err; | |
333 | } | |
334 | ||
335 | static inline void hidp_process_handshake(struct hidp_session *session, unsigned char param) | |
336 | { | |
337 | BT_DBG("session %p param 0x%02x", session, param); | |
338 | ||
339 | switch (param) { | |
340 | case HIDP_HSHK_SUCCESSFUL: | |
341 | /* FIXME: Call into SET_ GET_ handlers here */ | |
342 | break; | |
343 | ||
344 | case HIDP_HSHK_NOT_READY: | |
345 | case HIDP_HSHK_ERR_INVALID_REPORT_ID: | |
346 | case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST: | |
347 | case HIDP_HSHK_ERR_INVALID_PARAMETER: | |
348 | /* FIXME: Call into SET_ GET_ handlers here */ | |
349 | break; | |
350 | ||
351 | case HIDP_HSHK_ERR_UNKNOWN: | |
352 | break; | |
353 | ||
354 | case HIDP_HSHK_ERR_FATAL: | |
355 | /* Device requests a reboot, as this is the only way this error | |
8e87d142 | 356 | * can be recovered. */ |
1da177e4 LT |
357 | __hidp_send_ctrl_message(session, |
358 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0); | |
359 | break; | |
360 | ||
361 | default: | |
362 | __hidp_send_ctrl_message(session, | |
363 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
364 | break; | |
365 | } | |
366 | } | |
367 | ||
368 | static inline void hidp_process_hid_control(struct hidp_session *session, unsigned char param) | |
369 | { | |
370 | BT_DBG("session %p param 0x%02x", session, param); | |
371 | ||
372 | switch (param) { | |
373 | case HIDP_CTRL_NOP: | |
374 | break; | |
375 | ||
376 | case HIDP_CTRL_VIRTUAL_CABLE_UNPLUG: | |
377 | /* Flush the transmit queues */ | |
378 | skb_queue_purge(&session->ctrl_transmit); | |
379 | skb_queue_purge(&session->intr_transmit); | |
380 | ||
381 | /* Kill session thread */ | |
382 | atomic_inc(&session->terminate); | |
383 | break; | |
384 | ||
385 | case HIDP_CTRL_HARD_RESET: | |
386 | case HIDP_CTRL_SOFT_RESET: | |
387 | case HIDP_CTRL_SUSPEND: | |
388 | case HIDP_CTRL_EXIT_SUSPEND: | |
389 | /* FIXME: We have to parse these and return no error */ | |
390 | break; | |
391 | ||
392 | default: | |
393 | __hidp_send_ctrl_message(session, | |
394 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
395 | break; | |
396 | } | |
397 | } | |
398 | ||
399 | static inline void hidp_process_data(struct hidp_session *session, struct sk_buff *skb, unsigned char param) | |
400 | { | |
401 | BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param); | |
402 | ||
403 | switch (param) { | |
404 | case HIDP_DATA_RTYPE_INPUT: | |
405 | hidp_set_timer(session); | |
406 | ||
407 | if (session->input) | |
408 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
409 | |
410 | if (session->hid) | |
411 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0); | |
412 | ||
1da177e4 LT |
413 | break; |
414 | ||
415 | case HIDP_DATA_RTYPE_OTHER: | |
416 | case HIDP_DATA_RTYPE_OUPUT: | |
417 | case HIDP_DATA_RTYPE_FEATURE: | |
418 | break; | |
419 | ||
420 | default: | |
421 | __hidp_send_ctrl_message(session, | |
422 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
423 | } | |
424 | } | |
425 | ||
426 | static inline void hidp_recv_ctrl_frame(struct hidp_session *session, struct sk_buff *skb) | |
427 | { | |
428 | unsigned char hdr, type, param; | |
429 | ||
430 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
431 | ||
432 | hdr = skb->data[0]; | |
433 | skb_pull(skb, 1); | |
434 | ||
435 | type = hdr & HIDP_HEADER_TRANS_MASK; | |
436 | param = hdr & HIDP_HEADER_PARAM_MASK; | |
437 | ||
438 | switch (type) { | |
439 | case HIDP_TRANS_HANDSHAKE: | |
440 | hidp_process_handshake(session, param); | |
441 | break; | |
442 | ||
443 | case HIDP_TRANS_HID_CONTROL: | |
444 | hidp_process_hid_control(session, param); | |
445 | break; | |
446 | ||
447 | case HIDP_TRANS_DATA: | |
448 | hidp_process_data(session, skb, param); | |
449 | break; | |
450 | ||
451 | default: | |
452 | __hidp_send_ctrl_message(session, | |
453 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0); | |
454 | break; | |
455 | } | |
456 | ||
457 | kfree_skb(skb); | |
458 | } | |
459 | ||
460 | static inline void hidp_recv_intr_frame(struct hidp_session *session, struct sk_buff *skb) | |
461 | { | |
462 | unsigned char hdr; | |
463 | ||
464 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
465 | ||
466 | hdr = skb->data[0]; | |
467 | skb_pull(skb, 1); | |
468 | ||
469 | if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) { | |
470 | hidp_set_timer(session); | |
e1aaadd4 | 471 | |
1da177e4 LT |
472 | if (session->input) |
473 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
474 | |
475 | if (session->hid) { | |
476 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1); | |
477 | BT_DBG("report len %d", skb->len); | |
478 | } | |
1da177e4 LT |
479 | } else { |
480 | BT_DBG("Unsupported protocol header 0x%02x", hdr); | |
481 | } | |
482 | ||
483 | kfree_skb(skb); | |
484 | } | |
485 | ||
486 | static int hidp_send_frame(struct socket *sock, unsigned char *data, int len) | |
487 | { | |
488 | struct kvec iv = { data, len }; | |
489 | struct msghdr msg; | |
490 | ||
491 | BT_DBG("sock %p data %p len %d", sock, data, len); | |
492 | ||
493 | if (!len) | |
494 | return 0; | |
495 | ||
496 | memset(&msg, 0, sizeof(msg)); | |
497 | ||
498 | return kernel_sendmsg(sock, &msg, &iv, 1, len); | |
499 | } | |
500 | ||
b03efcfb | 501 | static void hidp_process_transmit(struct hidp_session *session) |
1da177e4 LT |
502 | { |
503 | struct sk_buff *skb; | |
504 | ||
505 | BT_DBG("session %p", session); | |
506 | ||
507 | while ((skb = skb_dequeue(&session->ctrl_transmit))) { | |
508 | if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) { | |
509 | skb_queue_head(&session->ctrl_transmit, skb); | |
510 | break; | |
511 | } | |
512 | ||
513 | hidp_set_timer(session); | |
514 | kfree_skb(skb); | |
515 | } | |
516 | ||
517 | while ((skb = skb_dequeue(&session->intr_transmit))) { | |
518 | if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) { | |
519 | skb_queue_head(&session->intr_transmit, skb); | |
520 | break; | |
521 | } | |
522 | ||
523 | hidp_set_timer(session); | |
524 | kfree_skb(skb); | |
525 | } | |
1da177e4 LT |
526 | } |
527 | ||
528 | static int hidp_session(void *arg) | |
529 | { | |
530 | struct hidp_session *session = arg; | |
531 | struct sock *ctrl_sk = session->ctrl_sock->sk; | |
532 | struct sock *intr_sk = session->intr_sock->sk; | |
533 | struct sk_buff *skb; | |
534 | int vendor = 0x0000, product = 0x0000; | |
535 | wait_queue_t ctrl_wait, intr_wait; | |
536 | ||
537 | BT_DBG("session %p", session); | |
538 | ||
539 | if (session->input) { | |
540 | vendor = session->input->id.vendor; | |
541 | product = session->input->id.product; | |
542 | } | |
543 | ||
e1aaadd4 MH |
544 | if (session->hid) { |
545 | vendor = session->hid->vendor; | |
546 | product = session->hid->product; | |
547 | } | |
548 | ||
1da177e4 LT |
549 | daemonize("khidpd_%04x%04x", vendor, product); |
550 | set_user_nice(current, -15); | |
1da177e4 LT |
551 | |
552 | init_waitqueue_entry(&ctrl_wait, current); | |
553 | init_waitqueue_entry(&intr_wait, current); | |
554 | add_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait); | |
555 | add_wait_queue(intr_sk->sk_sleep, &intr_wait); | |
556 | while (!atomic_read(&session->terminate)) { | |
557 | set_current_state(TASK_INTERRUPTIBLE); | |
558 | ||
559 | if (ctrl_sk->sk_state != BT_CONNECTED || intr_sk->sk_state != BT_CONNECTED) | |
560 | break; | |
561 | ||
562 | while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) { | |
563 | skb_orphan(skb); | |
564 | hidp_recv_ctrl_frame(session, skb); | |
565 | } | |
566 | ||
567 | while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) { | |
568 | skb_orphan(skb); | |
569 | hidp_recv_intr_frame(session, skb); | |
570 | } | |
571 | ||
572 | hidp_process_transmit(session); | |
573 | ||
574 | schedule(); | |
575 | } | |
576 | set_current_state(TASK_RUNNING); | |
577 | remove_wait_queue(intr_sk->sk_sleep, &intr_wait); | |
578 | remove_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait); | |
579 | ||
580 | down_write(&hidp_session_sem); | |
581 | ||
582 | hidp_del_timer(session); | |
583 | ||
1da177e4 LT |
584 | if (session->input) { |
585 | input_unregister_device(session->input); | |
34abf91f | 586 | session->input = NULL; |
1da177e4 LT |
587 | } |
588 | ||
e1aaadd4 MH |
589 | if (session->hid) { |
590 | if (session->hid->claimed & HID_CLAIMED_INPUT) | |
591 | hidinput_disconnect(session->hid); | |
592 | hid_free_device(session->hid); | |
593 | } | |
594 | ||
1c39858b DW |
595 | fput(session->intr_sock->file); |
596 | ||
597 | wait_event_timeout(*(ctrl_sk->sk_sleep), | |
598 | (ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500)); | |
599 | ||
600 | fput(session->ctrl_sock->file); | |
601 | ||
602 | __hidp_unlink_session(session); | |
603 | ||
1da177e4 LT |
604 | up_write(&hidp_session_sem); |
605 | ||
606 | kfree(session); | |
607 | return 0; | |
608 | } | |
609 | ||
0a85b964 MH |
610 | static struct device *hidp_get_device(struct hidp_session *session) |
611 | { | |
612 | bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src; | |
613 | bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst; | |
614 | struct hci_dev *hdev; | |
615 | struct hci_conn *conn; | |
616 | ||
617 | hdev = hci_get_route(dst, src); | |
618 | if (!hdev) | |
619 | return NULL; | |
620 | ||
621 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); | |
0a85b964 MH |
622 | |
623 | hci_dev_put(hdev); | |
624 | ||
b2cfcd75 | 625 | return conn ? &conn->dev : NULL; |
0a85b964 MH |
626 | } |
627 | ||
53465eb4 | 628 | static inline int hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req) |
1da177e4 LT |
629 | { |
630 | struct input_dev *input = session->input; | |
631 | int i; | |
632 | ||
5be39466 | 633 | input_set_drvdata(input, session); |
1da177e4 | 634 | |
34abf91f DT |
635 | input->name = "Bluetooth HID Boot Protocol Device"; |
636 | ||
1da177e4 LT |
637 | input->id.bustype = BUS_BLUETOOTH; |
638 | input->id.vendor = req->vendor; | |
639 | input->id.product = req->product; | |
640 | input->id.version = req->version; | |
641 | ||
642 | if (req->subclass & 0x40) { | |
643 | set_bit(EV_KEY, input->evbit); | |
644 | set_bit(EV_LED, input->evbit); | |
645 | set_bit(EV_REP, input->evbit); | |
646 | ||
647 | set_bit(LED_NUML, input->ledbit); | |
648 | set_bit(LED_CAPSL, input->ledbit); | |
649 | set_bit(LED_SCROLLL, input->ledbit); | |
650 | set_bit(LED_COMPOSE, input->ledbit); | |
651 | set_bit(LED_KANA, input->ledbit); | |
652 | ||
653 | for (i = 0; i < sizeof(hidp_keycode); i++) | |
654 | set_bit(hidp_keycode[i], input->keybit); | |
655 | clear_bit(0, input->keybit); | |
656 | } | |
657 | ||
658 | if (req->subclass & 0x80) { | |
7b19ada2 JS |
659 | input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
660 | input->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | | |
661 | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); | |
662 | input->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); | |
663 | input->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) | | |
664 | BIT_MASK(BTN_EXTRA); | |
665 | input->relbit[0] |= BIT_MASK(REL_WHEEL); | |
1da177e4 LT |
666 | } |
667 | ||
5be39466 | 668 | input->dev.parent = hidp_get_device(session); |
0a85b964 | 669 | |
1da177e4 LT |
670 | input->event = hidp_input_event; |
671 | ||
53465eb4 | 672 | return input_register_device(input); |
1da177e4 LT |
673 | } |
674 | ||
f5ffd462 MH |
675 | static int hidp_open(struct hid_device *hid) |
676 | { | |
677 | return 0; | |
678 | } | |
679 | ||
680 | static void hidp_close(struct hid_device *hid) | |
681 | { | |
682 | } | |
683 | ||
cb3fecc2 JK |
684 | static const struct { |
685 | __u16 idVendor; | |
686 | __u16 idProduct; | |
687 | unsigned quirks; | |
688 | } hidp_blacklist[] = { | |
689 | /* Apple wireless Mighty Mouse */ | |
690 | { 0x05ac, 0x030c, HID_QUIRK_MIGHTYMOUSE | HID_QUIRK_INVERT_HWHEEL }, | |
691 | ||
692 | { } /* Terminating entry */ | |
693 | }; | |
694 | ||
695 | static void hidp_setup_quirks(struct hid_device *hid) | |
696 | { | |
697 | unsigned int n; | |
698 | ||
699 | for (n = 0; hidp_blacklist[n].idVendor; n++) | |
700 | if (hidp_blacklist[n].idVendor == le16_to_cpu(hid->vendor) && | |
701 | hidp_blacklist[n].idProduct == le16_to_cpu(hid->product)) | |
702 | hid->quirks = hidp_blacklist[n].quirks; | |
703 | } | |
704 | ||
e1aaadd4 MH |
705 | static inline void hidp_setup_hid(struct hidp_session *session, struct hidp_connadd_req *req) |
706 | { | |
707 | struct hid_device *hid = session->hid; | |
708 | struct hid_report *report; | |
709 | bdaddr_t src, dst; | |
710 | ||
711 | baswap(&src, &bt_sk(session->ctrl_sock->sk)->src); | |
712 | baswap(&dst, &bt_sk(session->ctrl_sock->sk)->dst); | |
713 | ||
714 | hid->driver_data = session; | |
715 | ||
716 | hid->country = req->country; | |
717 | ||
718 | hid->bus = BUS_BLUETOOTH; | |
719 | hid->vendor = req->vendor; | |
720 | hid->product = req->product; | |
721 | hid->version = req->version; | |
722 | ||
723 | strncpy(hid->name, req->name, 128); | |
724 | strncpy(hid->phys, batostr(&src), 64); | |
725 | strncpy(hid->uniq, batostr(&dst), 64); | |
726 | ||
727 | hid->dev = hidp_get_device(session); | |
728 | ||
f5ffd462 MH |
729 | hid->hid_open = hidp_open; |
730 | hid->hid_close = hidp_close; | |
731 | ||
e1aaadd4 MH |
732 | hid->hidinput_input_event = hidp_hidinput_event; |
733 | ||
cb3fecc2 JK |
734 | hidp_setup_quirks(hid); |
735 | ||
e1aaadd4 MH |
736 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) |
737 | hidp_send_report(session, report); | |
738 | ||
739 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) | |
740 | hidp_send_report(session, report); | |
741 | ||
3b180bff | 742 | if (hidinput_connect(hid) == 0) |
e1aaadd4 | 743 | hid->claimed |= HID_CLAIMED_INPUT; |
e1aaadd4 MH |
744 | } |
745 | ||
1da177e4 LT |
746 | int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) |
747 | { | |
748 | struct hidp_session *session, *s; | |
749 | int err; | |
750 | ||
751 | BT_DBG(""); | |
752 | ||
753 | if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) || | |
754 | bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst)) | |
755 | return -ENOTUNIQ; | |
756 | ||
25ea6db0 | 757 | session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL); |
34abf91f | 758 | if (!session) |
1da177e4 | 759 | return -ENOMEM; |
1da177e4 | 760 | |
e1aaadd4 MH |
761 | BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size); |
762 | ||
763 | if (req->rd_size > 0) { | |
764 | unsigned char *buf = kmalloc(req->rd_size, GFP_KERNEL); | |
765 | ||
766 | if (!buf) { | |
767 | kfree(session); | |
768 | return -ENOMEM; | |
769 | } | |
770 | ||
771 | if (copy_from_user(buf, req->rd_data, req->rd_size)) { | |
772 | kfree(buf); | |
773 | kfree(session); | |
774 | return -EFAULT; | |
775 | } | |
776 | ||
777 | session->hid = hid_parse_report(buf, req->rd_size); | |
778 | ||
779 | kfree(buf); | |
780 | ||
781 | if (!session->hid) { | |
782 | kfree(session); | |
783 | return -EINVAL; | |
784 | } | |
785 | } | |
786 | ||
787 | if (!session->hid) { | |
788 | session->input = input_allocate_device(); | |
789 | if (!session->input) { | |
790 | kfree(session); | |
791 | return -ENOMEM; | |
792 | } | |
1da177e4 | 793 | } |
1da177e4 LT |
794 | |
795 | down_write(&hidp_session_sem); | |
796 | ||
797 | s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst); | |
798 | if (s && s->state == BT_CONNECTED) { | |
799 | err = -EEXIST; | |
800 | goto failed; | |
801 | } | |
802 | ||
803 | bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst); | |
804 | ||
805 | session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->omtu, l2cap_pi(ctrl_sock->sk)->imtu); | |
806 | session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->omtu, l2cap_pi(intr_sock->sk)->imtu); | |
807 | ||
808 | BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu); | |
809 | ||
810 | session->ctrl_sock = ctrl_sock; | |
811 | session->intr_sock = intr_sock; | |
812 | session->state = BT_CONNECTED; | |
813 | ||
814 | init_timer(&session->timer); | |
815 | ||
816 | session->timer.function = hidp_idle_timeout; | |
817 | session->timer.data = (unsigned long) session; | |
818 | ||
819 | skb_queue_head_init(&session->ctrl_transmit); | |
820 | skb_queue_head_init(&session->intr_transmit); | |
821 | ||
822 | session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); | |
823 | session->idle_to = req->idle_to; | |
824 | ||
53465eb4 WC |
825 | if (session->input) { |
826 | err = hidp_setup_input(session, req); | |
827 | if (err < 0) | |
828 | goto failed; | |
829 | } | |
1da177e4 | 830 | |
e1aaadd4 MH |
831 | if (session->hid) |
832 | hidp_setup_hid(session, req); | |
833 | ||
1da177e4 LT |
834 | __hidp_link_session(session); |
835 | ||
836 | hidp_set_timer(session); | |
837 | ||
838 | err = kernel_thread(hidp_session, session, CLONE_KERNEL); | |
839 | if (err < 0) | |
840 | goto unlink; | |
841 | ||
842 | if (session->input) { | |
843 | hidp_send_ctrl_message(session, | |
844 | HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0); | |
845 | session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE); | |
846 | ||
847 | session->leds = 0xff; | |
848 | hidp_input_event(session->input, EV_LED, 0, 0); | |
849 | } | |
850 | ||
851 | up_write(&hidp_session_sem); | |
852 | return 0; | |
853 | ||
854 | unlink: | |
855 | hidp_del_timer(session); | |
856 | ||
857 | __hidp_unlink_session(session); | |
858 | ||
34abf91f | 859 | if (session->input) { |
1da177e4 | 860 | input_unregister_device(session->input); |
34abf91f DT |
861 | session->input = NULL; /* don't try to free it here */ |
862 | } | |
1da177e4 LT |
863 | |
864 | failed: | |
865 | up_write(&hidp_session_sem); | |
866 | ||
e1aaadd4 MH |
867 | if (session->hid) |
868 | hid_free_device(session->hid); | |
869 | ||
5be39466 | 870 | input_free_device(session->input); |
1da177e4 LT |
871 | kfree(session); |
872 | return err; | |
873 | } | |
874 | ||
875 | int hidp_del_connection(struct hidp_conndel_req *req) | |
876 | { | |
877 | struct hidp_session *session; | |
878 | int err = 0; | |
879 | ||
880 | BT_DBG(""); | |
881 | ||
882 | down_read(&hidp_session_sem); | |
883 | ||
884 | session = __hidp_get_session(&req->bdaddr); | |
885 | if (session) { | |
886 | if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) { | |
887 | hidp_send_ctrl_message(session, | |
888 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0); | |
889 | } else { | |
890 | /* Flush the transmit queues */ | |
891 | skb_queue_purge(&session->ctrl_transmit); | |
892 | skb_queue_purge(&session->intr_transmit); | |
893 | ||
894 | /* Kill session thread */ | |
895 | atomic_inc(&session->terminate); | |
896 | hidp_schedule(session); | |
897 | } | |
898 | } else | |
899 | err = -ENOENT; | |
900 | ||
901 | up_read(&hidp_session_sem); | |
902 | return err; | |
903 | } | |
904 | ||
905 | int hidp_get_connlist(struct hidp_connlist_req *req) | |
906 | { | |
907 | struct list_head *p; | |
908 | int err = 0, n = 0; | |
909 | ||
910 | BT_DBG(""); | |
911 | ||
912 | down_read(&hidp_session_sem); | |
913 | ||
914 | list_for_each(p, &hidp_session_list) { | |
915 | struct hidp_session *session; | |
916 | struct hidp_conninfo ci; | |
917 | ||
918 | session = list_entry(p, struct hidp_session, list); | |
919 | ||
920 | __hidp_copy_session(session, &ci); | |
921 | ||
922 | if (copy_to_user(req->ci, &ci, sizeof(ci))) { | |
923 | err = -EFAULT; | |
924 | break; | |
925 | } | |
926 | ||
927 | if (++n >= req->cnum) | |
928 | break; | |
929 | ||
930 | req->ci++; | |
931 | } | |
932 | req->cnum = n; | |
933 | ||
934 | up_read(&hidp_session_sem); | |
935 | return err; | |
936 | } | |
937 | ||
938 | int hidp_get_conninfo(struct hidp_conninfo *ci) | |
939 | { | |
940 | struct hidp_session *session; | |
941 | int err = 0; | |
942 | ||
943 | down_read(&hidp_session_sem); | |
944 | ||
945 | session = __hidp_get_session(&ci->bdaddr); | |
946 | if (session) | |
947 | __hidp_copy_session(session, ci); | |
948 | else | |
949 | err = -ENOENT; | |
950 | ||
951 | up_read(&hidp_session_sem); | |
952 | return err; | |
953 | } | |
954 | ||
955 | static int __init hidp_init(void) | |
956 | { | |
957 | l2cap_load(); | |
958 | ||
959 | BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION); | |
960 | ||
961 | return hidp_init_sockets(); | |
962 | } | |
963 | ||
964 | static void __exit hidp_exit(void) | |
965 | { | |
966 | hidp_cleanup_sockets(); | |
967 | } | |
968 | ||
969 | module_init(hidp_init); | |
970 | module_exit(hidp_exit); | |
971 | ||
972 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
973 | MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION); | |
974 | MODULE_VERSION(VERSION); | |
975 | MODULE_LICENSE("GPL"); | |
976 | MODULE_ALIAS("bt-proto-6"); |