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> | |
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> | |
e1aaadd4 | 41 | #include <linux/hid.h> |
1da177e4 LT |
42 | |
43 | #include <net/bluetooth/bluetooth.h> | |
0a85b964 | 44 | #include <net/bluetooth/hci_core.h> |
1da177e4 LT |
45 | #include <net/bluetooth/l2cap.h> |
46 | ||
47 | #include "hidp.h" | |
48 | ||
49 | #ifndef CONFIG_BT_HIDP_DEBUG | |
50 | #undef BT_DBG | |
51 | #define BT_DBG(D...) | |
52 | #endif | |
53 | ||
e1aaadd4 | 54 | #define VERSION "1.2" |
1da177e4 LT |
55 | |
56 | static DECLARE_RWSEM(hidp_session_sem); | |
57 | static LIST_HEAD(hidp_session_list); | |
58 | ||
59 | static unsigned char hidp_keycode[256] = { | |
60 | 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, | |
61 | 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, | |
62 | 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, | |
63 | 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, | |
64 | 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, | |
65 | 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, | |
66 | 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, | |
67 | 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, | |
68 | 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0, | |
69 | 122,123, 90, 91, 85, 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 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
74 | 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, | |
75 | 150,158,159,128,136,177,178,176,142,152,173,140 | |
76 | }; | |
77 | ||
78 | static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }; | |
79 | ||
80 | static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr) | |
81 | { | |
82 | struct hidp_session *session; | |
83 | struct list_head *p; | |
84 | ||
85 | BT_DBG(""); | |
86 | ||
87 | list_for_each(p, &hidp_session_list) { | |
88 | session = list_entry(p, struct hidp_session, list); | |
89 | if (!bacmp(bdaddr, &session->bdaddr)) | |
90 | return session; | |
91 | } | |
92 | return NULL; | |
93 | } | |
94 | ||
95 | static void __hidp_link_session(struct hidp_session *session) | |
96 | { | |
97 | __module_get(THIS_MODULE); | |
98 | list_add(&session->list, &hidp_session_list); | |
99 | } | |
100 | ||
101 | static void __hidp_unlink_session(struct hidp_session *session) | |
102 | { | |
103 | list_del(&session->list); | |
104 | module_put(THIS_MODULE); | |
105 | } | |
106 | ||
107 | static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci) | |
108 | { | |
109 | bacpy(&ci->bdaddr, &session->bdaddr); | |
110 | ||
111 | ci->flags = session->flags; | |
112 | ci->state = session->state; | |
113 | ||
114 | ci->vendor = 0x0000; | |
115 | ci->product = 0x0000; | |
116 | ci->version = 0x0000; | |
117 | memset(ci->name, 0, 128); | |
118 | ||
119 | if (session->input) { | |
120 | ci->vendor = session->input->id.vendor; | |
121 | ci->product = session->input->id.product; | |
122 | ci->version = session->input->id.version; | |
123 | if (session->input->name) | |
124 | strncpy(ci->name, session->input->name, 128); | |
125 | else | |
126 | strncpy(ci->name, "HID Boot Device", 128); | |
127 | } | |
e1aaadd4 MH |
128 | |
129 | if (session->hid) { | |
130 | ci->vendor = session->hid->vendor; | |
131 | ci->product = session->hid->product; | |
132 | ci->version = session->hid->version; | |
133 | strncpy(ci->name, session->hid->name, 128); | |
134 | } | |
1da177e4 LT |
135 | } |
136 | ||
e1aaadd4 MH |
137 | static inline int hidp_queue_event(struct hidp_session *session, struct input_dev *dev, |
138 | unsigned int type, unsigned int code, int value) | |
1da177e4 | 139 | { |
1da177e4 | 140 | unsigned char newleds; |
e1aaadd4 | 141 | struct sk_buff *skb; |
1da177e4 | 142 | |
e1aaadd4 | 143 | BT_DBG("session %p type %d code %d value %d", session, type, code, value); |
1da177e4 LT |
144 | |
145 | if (type != EV_LED) | |
146 | return -1; | |
147 | ||
148 | newleds = (!!test_bit(LED_KANA, dev->led) << 3) | | |
149 | (!!test_bit(LED_COMPOSE, dev->led) << 3) | | |
150 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | | |
151 | (!!test_bit(LED_CAPSL, dev->led) << 1) | | |
152 | (!!test_bit(LED_NUML, dev->led)); | |
153 | ||
154 | if (session->leds == newleds) | |
155 | return 0; | |
156 | ||
157 | session->leds = newleds; | |
158 | ||
159 | if (!(skb = alloc_skb(3, GFP_ATOMIC))) { | |
160 | BT_ERR("Can't allocate memory for new frame"); | |
161 | return -ENOMEM; | |
162 | } | |
163 | ||
164 | *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; | |
165 | *skb_put(skb, 1) = 0x01; | |
166 | *skb_put(skb, 1) = newleds; | |
167 | ||
168 | skb_queue_tail(&session->intr_transmit, skb); | |
169 | ||
170 | hidp_schedule(session); | |
171 | ||
172 | return 0; | |
173 | } | |
174 | ||
e1aaadd4 MH |
175 | static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
176 | { | |
5be39466 | 177 | struct hid_device *hid = input_get_drvdata(dev); |
e1aaadd4 MH |
178 | struct hidp_session *session = hid->driver_data; |
179 | ||
180 | return hidp_queue_event(session, dev, type, code, value); | |
181 | } | |
182 | ||
183 | static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) | |
184 | { | |
5be39466 | 185 | struct hidp_session *session = input_get_drvdata(dev); |
e1aaadd4 MH |
186 | |
187 | return hidp_queue_event(session, dev, type, code, value); | |
188 | } | |
189 | ||
1da177e4 LT |
190 | static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) |
191 | { | |
192 | struct input_dev *dev = session->input; | |
193 | unsigned char *keys = session->keys; | |
194 | unsigned char *udata = skb->data + 1; | |
195 | signed char *sdata = skb->data + 1; | |
196 | int i, size = skb->len - 1; | |
197 | ||
198 | switch (skb->data[0]) { | |
199 | case 0x01: /* Keyboard report */ | |
200 | for (i = 0; i < 8; i++) | |
201 | input_report_key(dev, hidp_keycode[i + 224], (udata[0] >> i) & 1); | |
202 | ||
203 | /* If all the key codes have been set to 0x01, it means | |
204 | * too many keys were pressed at the same time. */ | |
205 | if (!memcmp(udata + 2, hidp_mkeyspat, 6)) | |
206 | break; | |
207 | ||
208 | for (i = 2; i < 8; i++) { | |
209 | if (keys[i] > 3 && memscan(udata + 2, keys[i], 6) == udata + 8) { | |
210 | if (hidp_keycode[keys[i]]) | |
211 | input_report_key(dev, hidp_keycode[keys[i]], 0); | |
212 | else | |
213 | BT_ERR("Unknown key (scancode %#x) released.", keys[i]); | |
214 | } | |
215 | ||
216 | if (udata[i] > 3 && memscan(keys + 2, udata[i], 6) == keys + 8) { | |
217 | if (hidp_keycode[udata[i]]) | |
218 | input_report_key(dev, hidp_keycode[udata[i]], 1); | |
219 | else | |
220 | BT_ERR("Unknown key (scancode %#x) pressed.", udata[i]); | |
221 | } | |
222 | } | |
223 | ||
224 | memcpy(keys, udata, 8); | |
225 | break; | |
226 | ||
227 | case 0x02: /* Mouse report */ | |
228 | input_report_key(dev, BTN_LEFT, sdata[0] & 0x01); | |
229 | input_report_key(dev, BTN_RIGHT, sdata[0] & 0x02); | |
230 | input_report_key(dev, BTN_MIDDLE, sdata[0] & 0x04); | |
231 | input_report_key(dev, BTN_SIDE, sdata[0] & 0x08); | |
232 | input_report_key(dev, BTN_EXTRA, sdata[0] & 0x10); | |
233 | ||
234 | input_report_rel(dev, REL_X, sdata[1]); | |
235 | input_report_rel(dev, REL_Y, sdata[2]); | |
236 | ||
237 | if (size > 3) | |
238 | input_report_rel(dev, REL_WHEEL, sdata[3]); | |
239 | break; | |
240 | } | |
241 | ||
242 | input_sync(dev); | |
243 | } | |
244 | ||
e1aaadd4 MH |
245 | static inline int hidp_queue_report(struct hidp_session *session, unsigned char *data, int size) |
246 | { | |
247 | struct sk_buff *skb; | |
248 | ||
249 | BT_DBG("session %p hid %p data %p size %d", session, device, data, size); | |
250 | ||
251 | if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) { | |
252 | BT_ERR("Can't allocate memory for new frame"); | |
253 | return -ENOMEM; | |
254 | } | |
255 | ||
256 | *skb_put(skb, 1) = 0xa2; | |
257 | if (size > 0) | |
258 | memcpy(skb_put(skb, size), data, size); | |
259 | ||
260 | skb_queue_tail(&session->intr_transmit, skb); | |
261 | ||
262 | hidp_schedule(session); | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
267 | static int hidp_send_report(struct hidp_session *session, struct hid_report *report) | |
268 | { | |
269 | unsigned char buf[32]; | |
270 | int rsize; | |
271 | ||
272 | rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
273 | if (rsize > sizeof(buf)) | |
274 | return -EIO; | |
275 | ||
276 | hid_output_report(report, buf); | |
277 | ||
278 | return hidp_queue_report(session, buf, rsize); | |
279 | } | |
280 | ||
1da177e4 LT |
281 | static void hidp_idle_timeout(unsigned long arg) |
282 | { | |
283 | struct hidp_session *session = (struct hidp_session *) arg; | |
284 | ||
285 | atomic_inc(&session->terminate); | |
286 | hidp_schedule(session); | |
287 | } | |
288 | ||
289 | static inline void hidp_set_timer(struct hidp_session *session) | |
290 | { | |
291 | if (session->idle_to > 0) | |
292 | mod_timer(&session->timer, jiffies + HZ * session->idle_to); | |
293 | } | |
294 | ||
295 | static inline void hidp_del_timer(struct hidp_session *session) | |
296 | { | |
297 | if (session->idle_to > 0) | |
298 | del_timer(&session->timer); | |
299 | } | |
300 | ||
301 | static int __hidp_send_ctrl_message(struct hidp_session *session, | |
302 | unsigned char hdr, unsigned char *data, int size) | |
303 | { | |
304 | struct sk_buff *skb; | |
305 | ||
306 | BT_DBG("session %p data %p size %d", session, data, size); | |
307 | ||
308 | if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) { | |
309 | BT_ERR("Can't allocate memory for new frame"); | |
310 | return -ENOMEM; | |
311 | } | |
312 | ||
313 | *skb_put(skb, 1) = hdr; | |
314 | if (data && size > 0) | |
315 | memcpy(skb_put(skb, size), data, size); | |
316 | ||
317 | skb_queue_tail(&session->ctrl_transmit, skb); | |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
b6f99a21 | 322 | static inline int hidp_send_ctrl_message(struct hidp_session *session, |
1da177e4 LT |
323 | unsigned char hdr, unsigned char *data, int size) |
324 | { | |
325 | int err; | |
326 | ||
327 | err = __hidp_send_ctrl_message(session, hdr, data, size); | |
328 | ||
329 | hidp_schedule(session); | |
330 | ||
331 | return err; | |
332 | } | |
333 | ||
334 | static inline void hidp_process_handshake(struct hidp_session *session, unsigned char param) | |
335 | { | |
336 | BT_DBG("session %p param 0x%02x", session, param); | |
337 | ||
338 | switch (param) { | |
339 | case HIDP_HSHK_SUCCESSFUL: | |
340 | /* FIXME: Call into SET_ GET_ handlers here */ | |
341 | break; | |
342 | ||
343 | case HIDP_HSHK_NOT_READY: | |
344 | case HIDP_HSHK_ERR_INVALID_REPORT_ID: | |
345 | case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST: | |
346 | case HIDP_HSHK_ERR_INVALID_PARAMETER: | |
347 | /* FIXME: Call into SET_ GET_ handlers here */ | |
348 | break; | |
349 | ||
350 | case HIDP_HSHK_ERR_UNKNOWN: | |
351 | break; | |
352 | ||
353 | case HIDP_HSHK_ERR_FATAL: | |
354 | /* Device requests a reboot, as this is the only way this error | |
8e87d142 | 355 | * can be recovered. */ |
1da177e4 LT |
356 | __hidp_send_ctrl_message(session, |
357 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0); | |
358 | break; | |
359 | ||
360 | default: | |
361 | __hidp_send_ctrl_message(session, | |
362 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
363 | break; | |
364 | } | |
365 | } | |
366 | ||
367 | static inline void hidp_process_hid_control(struct hidp_session *session, unsigned char param) | |
368 | { | |
369 | BT_DBG("session %p param 0x%02x", session, param); | |
370 | ||
371 | switch (param) { | |
372 | case HIDP_CTRL_NOP: | |
373 | break; | |
374 | ||
375 | case HIDP_CTRL_VIRTUAL_CABLE_UNPLUG: | |
376 | /* Flush the transmit queues */ | |
377 | skb_queue_purge(&session->ctrl_transmit); | |
378 | skb_queue_purge(&session->intr_transmit); | |
379 | ||
380 | /* Kill session thread */ | |
381 | atomic_inc(&session->terminate); | |
382 | break; | |
383 | ||
384 | case HIDP_CTRL_HARD_RESET: | |
385 | case HIDP_CTRL_SOFT_RESET: | |
386 | case HIDP_CTRL_SUSPEND: | |
387 | case HIDP_CTRL_EXIT_SUSPEND: | |
388 | /* FIXME: We have to parse these and return no error */ | |
389 | break; | |
390 | ||
391 | default: | |
392 | __hidp_send_ctrl_message(session, | |
393 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
394 | break; | |
395 | } | |
396 | } | |
397 | ||
398 | static inline void hidp_process_data(struct hidp_session *session, struct sk_buff *skb, unsigned char param) | |
399 | { | |
400 | BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param); | |
401 | ||
402 | switch (param) { | |
403 | case HIDP_DATA_RTYPE_INPUT: | |
404 | hidp_set_timer(session); | |
405 | ||
406 | if (session->input) | |
407 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
408 | |
409 | if (session->hid) | |
410 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0); | |
411 | ||
1da177e4 LT |
412 | break; |
413 | ||
414 | case HIDP_DATA_RTYPE_OTHER: | |
415 | case HIDP_DATA_RTYPE_OUPUT: | |
416 | case HIDP_DATA_RTYPE_FEATURE: | |
417 | break; | |
418 | ||
419 | default: | |
420 | __hidp_send_ctrl_message(session, | |
421 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
422 | } | |
423 | } | |
424 | ||
425 | static inline void hidp_recv_ctrl_frame(struct hidp_session *session, struct sk_buff *skb) | |
426 | { | |
427 | unsigned char hdr, type, param; | |
428 | ||
429 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
430 | ||
431 | hdr = skb->data[0]; | |
432 | skb_pull(skb, 1); | |
433 | ||
434 | type = hdr & HIDP_HEADER_TRANS_MASK; | |
435 | param = hdr & HIDP_HEADER_PARAM_MASK; | |
436 | ||
437 | switch (type) { | |
438 | case HIDP_TRANS_HANDSHAKE: | |
439 | hidp_process_handshake(session, param); | |
440 | break; | |
441 | ||
442 | case HIDP_TRANS_HID_CONTROL: | |
443 | hidp_process_hid_control(session, param); | |
444 | break; | |
445 | ||
446 | case HIDP_TRANS_DATA: | |
447 | hidp_process_data(session, skb, param); | |
448 | break; | |
449 | ||
450 | default: | |
451 | __hidp_send_ctrl_message(session, | |
452 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0); | |
453 | break; | |
454 | } | |
455 | ||
456 | kfree_skb(skb); | |
457 | } | |
458 | ||
459 | static inline void hidp_recv_intr_frame(struct hidp_session *session, struct sk_buff *skb) | |
460 | { | |
461 | unsigned char hdr; | |
462 | ||
463 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
464 | ||
465 | hdr = skb->data[0]; | |
466 | skb_pull(skb, 1); | |
467 | ||
468 | if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) { | |
469 | hidp_set_timer(session); | |
e1aaadd4 | 470 | |
1da177e4 LT |
471 | if (session->input) |
472 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
473 | |
474 | if (session->hid) { | |
475 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1); | |
476 | BT_DBG("report len %d", skb->len); | |
477 | } | |
1da177e4 LT |
478 | } else { |
479 | BT_DBG("Unsupported protocol header 0x%02x", hdr); | |
480 | } | |
481 | ||
482 | kfree_skb(skb); | |
483 | } | |
484 | ||
485 | static int hidp_send_frame(struct socket *sock, unsigned char *data, int len) | |
486 | { | |
487 | struct kvec iv = { data, len }; | |
488 | struct msghdr msg; | |
489 | ||
490 | BT_DBG("sock %p data %p len %d", sock, data, len); | |
491 | ||
492 | if (!len) | |
493 | return 0; | |
494 | ||
495 | memset(&msg, 0, sizeof(msg)); | |
496 | ||
497 | return kernel_sendmsg(sock, &msg, &iv, 1, len); | |
498 | } | |
499 | ||
b03efcfb | 500 | static void hidp_process_transmit(struct hidp_session *session) |
1da177e4 LT |
501 | { |
502 | struct sk_buff *skb; | |
503 | ||
504 | BT_DBG("session %p", session); | |
505 | ||
506 | while ((skb = skb_dequeue(&session->ctrl_transmit))) { | |
507 | if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) { | |
508 | skb_queue_head(&session->ctrl_transmit, skb); | |
509 | break; | |
510 | } | |
511 | ||
512 | hidp_set_timer(session); | |
513 | kfree_skb(skb); | |
514 | } | |
515 | ||
516 | while ((skb = skb_dequeue(&session->intr_transmit))) { | |
517 | if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) { | |
518 | skb_queue_head(&session->intr_transmit, skb); | |
519 | break; | |
520 | } | |
521 | ||
522 | hidp_set_timer(session); | |
523 | kfree_skb(skb); | |
524 | } | |
1da177e4 LT |
525 | } |
526 | ||
527 | static int hidp_session(void *arg) | |
528 | { | |
529 | struct hidp_session *session = arg; | |
530 | struct sock *ctrl_sk = session->ctrl_sock->sk; | |
531 | struct sock *intr_sk = session->intr_sock->sk; | |
532 | struct sk_buff *skb; | |
533 | int vendor = 0x0000, product = 0x0000; | |
534 | wait_queue_t ctrl_wait, intr_wait; | |
535 | ||
536 | BT_DBG("session %p", session); | |
537 | ||
538 | if (session->input) { | |
539 | vendor = session->input->id.vendor; | |
540 | product = session->input->id.product; | |
541 | } | |
542 | ||
e1aaadd4 MH |
543 | if (session->hid) { |
544 | vendor = session->hid->vendor; | |
545 | product = session->hid->product; | |
546 | } | |
547 | ||
1da177e4 LT |
548 | daemonize("khidpd_%04x%04x", vendor, product); |
549 | set_user_nice(current, -15); | |
550 | current->flags |= PF_NOFREEZE; | |
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 | ||
e86070c8 | 584 | fput(session->intr_sock->file); |
1da177e4 | 585 | |
7b19ffc4 MH |
586 | wait_event_timeout(*(ctrl_sk->sk_sleep), |
587 | (ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500)); | |
1da177e4 | 588 | |
e86070c8 | 589 | fput(session->ctrl_sock->file); |
1da177e4 LT |
590 | |
591 | __hidp_unlink_session(session); | |
592 | ||
593 | if (session->input) { | |
594 | input_unregister_device(session->input); | |
34abf91f | 595 | session->input = NULL; |
1da177e4 LT |
596 | } |
597 | ||
e1aaadd4 MH |
598 | if (session->hid) { |
599 | if (session->hid->claimed & HID_CLAIMED_INPUT) | |
600 | hidinput_disconnect(session->hid); | |
601 | hid_free_device(session->hid); | |
602 | } | |
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 | ||
1da177e4 LT |
628 | static inline void hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req) |
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) { | |
659 | input->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); | |
660 | input->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE); | |
661 | input->relbit[0] = BIT(REL_X) | BIT(REL_Y); | |
662 | input->keybit[LONG(BTN_MOUSE)] |= BIT(BTN_SIDE) | BIT(BTN_EXTRA); | |
663 | input->relbit[0] |= BIT(REL_WHEEL); | |
664 | } | |
665 | ||
5be39466 | 666 | input->dev.parent = hidp_get_device(session); |
0a85b964 | 667 | |
1da177e4 LT |
668 | input->event = hidp_input_event; |
669 | ||
670 | input_register_device(input); | |
671 | } | |
672 | ||
f5ffd462 MH |
673 | static int hidp_open(struct hid_device *hid) |
674 | { | |
675 | return 0; | |
676 | } | |
677 | ||
678 | static void hidp_close(struct hid_device *hid) | |
679 | { | |
680 | } | |
681 | ||
cb3fecc2 JK |
682 | static const struct { |
683 | __u16 idVendor; | |
684 | __u16 idProduct; | |
685 | unsigned quirks; | |
686 | } hidp_blacklist[] = { | |
687 | /* Apple wireless Mighty Mouse */ | |
688 | { 0x05ac, 0x030c, HID_QUIRK_MIGHTYMOUSE | HID_QUIRK_INVERT_HWHEEL }, | |
689 | ||
690 | { } /* Terminating entry */ | |
691 | }; | |
692 | ||
693 | static void hidp_setup_quirks(struct hid_device *hid) | |
694 | { | |
695 | unsigned int n; | |
696 | ||
697 | for (n = 0; hidp_blacklist[n].idVendor; n++) | |
698 | if (hidp_blacklist[n].idVendor == le16_to_cpu(hid->vendor) && | |
699 | hidp_blacklist[n].idProduct == le16_to_cpu(hid->product)) | |
700 | hid->quirks = hidp_blacklist[n].quirks; | |
701 | } | |
702 | ||
e1aaadd4 MH |
703 | static inline void hidp_setup_hid(struct hidp_session *session, struct hidp_connadd_req *req) |
704 | { | |
705 | struct hid_device *hid = session->hid; | |
706 | struct hid_report *report; | |
707 | bdaddr_t src, dst; | |
708 | ||
709 | baswap(&src, &bt_sk(session->ctrl_sock->sk)->src); | |
710 | baswap(&dst, &bt_sk(session->ctrl_sock->sk)->dst); | |
711 | ||
712 | hid->driver_data = session; | |
713 | ||
714 | hid->country = req->country; | |
715 | ||
716 | hid->bus = BUS_BLUETOOTH; | |
717 | hid->vendor = req->vendor; | |
718 | hid->product = req->product; | |
719 | hid->version = req->version; | |
720 | ||
721 | strncpy(hid->name, req->name, 128); | |
722 | strncpy(hid->phys, batostr(&src), 64); | |
723 | strncpy(hid->uniq, batostr(&dst), 64); | |
724 | ||
725 | hid->dev = hidp_get_device(session); | |
726 | ||
f5ffd462 MH |
727 | hid->hid_open = hidp_open; |
728 | hid->hid_close = hidp_close; | |
729 | ||
e1aaadd4 MH |
730 | hid->hidinput_input_event = hidp_hidinput_event; |
731 | ||
cb3fecc2 JK |
732 | hidp_setup_quirks(hid); |
733 | ||
e1aaadd4 MH |
734 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) |
735 | hidp_send_report(session, report); | |
736 | ||
737 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) | |
738 | hidp_send_report(session, report); | |
739 | ||
3b180bff | 740 | if (hidinput_connect(hid) == 0) |
e1aaadd4 | 741 | hid->claimed |= HID_CLAIMED_INPUT; |
e1aaadd4 MH |
742 | } |
743 | ||
1da177e4 LT |
744 | int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) |
745 | { | |
746 | struct hidp_session *session, *s; | |
747 | int err; | |
748 | ||
749 | BT_DBG(""); | |
750 | ||
751 | if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) || | |
752 | bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst)) | |
753 | return -ENOTUNIQ; | |
754 | ||
25ea6db0 | 755 | session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL); |
34abf91f | 756 | if (!session) |
1da177e4 | 757 | return -ENOMEM; |
1da177e4 | 758 | |
e1aaadd4 MH |
759 | BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size); |
760 | ||
761 | if (req->rd_size > 0) { | |
762 | unsigned char *buf = kmalloc(req->rd_size, GFP_KERNEL); | |
763 | ||
764 | if (!buf) { | |
765 | kfree(session); | |
766 | return -ENOMEM; | |
767 | } | |
768 | ||
769 | if (copy_from_user(buf, req->rd_data, req->rd_size)) { | |
770 | kfree(buf); | |
771 | kfree(session); | |
772 | return -EFAULT; | |
773 | } | |
774 | ||
775 | session->hid = hid_parse_report(buf, req->rd_size); | |
776 | ||
777 | kfree(buf); | |
778 | ||
779 | if (!session->hid) { | |
780 | kfree(session); | |
781 | return -EINVAL; | |
782 | } | |
783 | } | |
784 | ||
785 | if (!session->hid) { | |
786 | session->input = input_allocate_device(); | |
787 | if (!session->input) { | |
788 | kfree(session); | |
789 | return -ENOMEM; | |
790 | } | |
1da177e4 | 791 | } |
1da177e4 LT |
792 | |
793 | down_write(&hidp_session_sem); | |
794 | ||
795 | s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst); | |
796 | if (s && s->state == BT_CONNECTED) { | |
797 | err = -EEXIST; | |
798 | goto failed; | |
799 | } | |
800 | ||
801 | bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst); | |
802 | ||
803 | session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->omtu, l2cap_pi(ctrl_sock->sk)->imtu); | |
804 | session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->omtu, l2cap_pi(intr_sock->sk)->imtu); | |
805 | ||
806 | BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu); | |
807 | ||
808 | session->ctrl_sock = ctrl_sock; | |
809 | session->intr_sock = intr_sock; | |
810 | session->state = BT_CONNECTED; | |
811 | ||
812 | init_timer(&session->timer); | |
813 | ||
814 | session->timer.function = hidp_idle_timeout; | |
815 | session->timer.data = (unsigned long) session; | |
816 | ||
817 | skb_queue_head_init(&session->ctrl_transmit); | |
818 | skb_queue_head_init(&session->intr_transmit); | |
819 | ||
820 | session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); | |
821 | session->idle_to = req->idle_to; | |
822 | ||
823 | if (session->input) | |
824 | hidp_setup_input(session, req); | |
825 | ||
e1aaadd4 MH |
826 | if (session->hid) |
827 | hidp_setup_hid(session, req); | |
828 | ||
1da177e4 LT |
829 | __hidp_link_session(session); |
830 | ||
831 | hidp_set_timer(session); | |
832 | ||
833 | err = kernel_thread(hidp_session, session, CLONE_KERNEL); | |
834 | if (err < 0) | |
835 | goto unlink; | |
836 | ||
837 | if (session->input) { | |
838 | hidp_send_ctrl_message(session, | |
839 | HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0); | |
840 | session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE); | |
841 | ||
842 | session->leds = 0xff; | |
843 | hidp_input_event(session->input, EV_LED, 0, 0); | |
844 | } | |
845 | ||
846 | up_write(&hidp_session_sem); | |
847 | return 0; | |
848 | ||
849 | unlink: | |
850 | hidp_del_timer(session); | |
851 | ||
852 | __hidp_unlink_session(session); | |
853 | ||
34abf91f | 854 | if (session->input) { |
1da177e4 | 855 | input_unregister_device(session->input); |
34abf91f DT |
856 | session->input = NULL; /* don't try to free it here */ |
857 | } | |
1da177e4 LT |
858 | |
859 | failed: | |
860 | up_write(&hidp_session_sem); | |
861 | ||
e1aaadd4 MH |
862 | if (session->hid) |
863 | hid_free_device(session->hid); | |
864 | ||
5be39466 | 865 | input_free_device(session->input); |
1da177e4 LT |
866 | kfree(session); |
867 | return err; | |
868 | } | |
869 | ||
870 | int hidp_del_connection(struct hidp_conndel_req *req) | |
871 | { | |
872 | struct hidp_session *session; | |
873 | int err = 0; | |
874 | ||
875 | BT_DBG(""); | |
876 | ||
877 | down_read(&hidp_session_sem); | |
878 | ||
879 | session = __hidp_get_session(&req->bdaddr); | |
880 | if (session) { | |
881 | if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) { | |
882 | hidp_send_ctrl_message(session, | |
883 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0); | |
884 | } else { | |
885 | /* Flush the transmit queues */ | |
886 | skb_queue_purge(&session->ctrl_transmit); | |
887 | skb_queue_purge(&session->intr_transmit); | |
888 | ||
889 | /* Kill session thread */ | |
890 | atomic_inc(&session->terminate); | |
891 | hidp_schedule(session); | |
892 | } | |
893 | } else | |
894 | err = -ENOENT; | |
895 | ||
896 | up_read(&hidp_session_sem); | |
897 | return err; | |
898 | } | |
899 | ||
900 | int hidp_get_connlist(struct hidp_connlist_req *req) | |
901 | { | |
902 | struct list_head *p; | |
903 | int err = 0, n = 0; | |
904 | ||
905 | BT_DBG(""); | |
906 | ||
907 | down_read(&hidp_session_sem); | |
908 | ||
909 | list_for_each(p, &hidp_session_list) { | |
910 | struct hidp_session *session; | |
911 | struct hidp_conninfo ci; | |
912 | ||
913 | session = list_entry(p, struct hidp_session, list); | |
914 | ||
915 | __hidp_copy_session(session, &ci); | |
916 | ||
917 | if (copy_to_user(req->ci, &ci, sizeof(ci))) { | |
918 | err = -EFAULT; | |
919 | break; | |
920 | } | |
921 | ||
922 | if (++n >= req->cnum) | |
923 | break; | |
924 | ||
925 | req->ci++; | |
926 | } | |
927 | req->cnum = n; | |
928 | ||
929 | up_read(&hidp_session_sem); | |
930 | return err; | |
931 | } | |
932 | ||
933 | int hidp_get_conninfo(struct hidp_conninfo *ci) | |
934 | { | |
935 | struct hidp_session *session; | |
936 | int err = 0; | |
937 | ||
938 | down_read(&hidp_session_sem); | |
939 | ||
940 | session = __hidp_get_session(&ci->bdaddr); | |
941 | if (session) | |
942 | __hidp_copy_session(session, ci); | |
943 | else | |
944 | err = -ENOENT; | |
945 | ||
946 | up_read(&hidp_session_sem); | |
947 | return err; | |
948 | } | |
949 | ||
950 | static int __init hidp_init(void) | |
951 | { | |
952 | l2cap_load(); | |
953 | ||
954 | BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION); | |
955 | ||
956 | return hidp_init_sockets(); | |
957 | } | |
958 | ||
959 | static void __exit hidp_exit(void) | |
960 | { | |
961 | hidp_cleanup_sockets(); | |
962 | } | |
963 | ||
964 | module_init(hidp_init); | |
965 | module_exit(hidp_exit); | |
966 | ||
967 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
968 | MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION); | |
969 | MODULE_VERSION(VERSION); | |
970 | MODULE_LICENSE("GPL"); | |
971 | MODULE_ALIAS("bt-proto-6"); |