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Commit | Line | Data |
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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 | 23 | #include <linux/module.h> |
1da177e4 | 24 | #include <linux/file.h> |
aabf6f89 | 25 | #include <linux/kthread.h> |
364f6351 | 26 | #include <linux/hidraw.h> |
1da177e4 LT |
27 | |
28 | #include <net/bluetooth/bluetooth.h> | |
0a85b964 | 29 | #include <net/bluetooth/hci_core.h> |
1da177e4 LT |
30 | #include <net/bluetooth/l2cap.h> |
31 | ||
32 | #include "hidp.h" | |
33 | ||
e1aaadd4 | 34 | #define VERSION "1.2" |
1da177e4 LT |
35 | |
36 | static DECLARE_RWSEM(hidp_session_sem); | |
37 | static LIST_HEAD(hidp_session_list); | |
38 | ||
39 | static unsigned char hidp_keycode[256] = { | |
17f09a7e SJ |
40 | 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, |
41 | 37, 38, 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, | |
42 | 21, 44, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, | |
43 | 14, 15, 57, 12, 13, 26, 27, 43, 43, 39, 40, 41, 51, 52, | |
44 | 53, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 87, 88, | |
45 | 99, 70, 119, 110, 102, 104, 111, 107, 109, 106, 105, 108, 103, 69, | |
46 | 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 72, 73, | |
47 | 82, 83, 86, 127, 116, 117, 183, 184, 185, 186, 187, 188, 189, 190, | |
48 | 191, 192, 193, 194, 134, 138, 130, 132, 128, 129, 131, 137, 133, 135, | |
49 | 136, 113, 115, 114, 0, 0, 0, 121, 0, 89, 93, 124, 92, 94, | |
50 | 95, 0, 0, 0, 122, 123, 90, 91, 85, 0, 0, 0, 0, 0, | |
51 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
52 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
53 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
54 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
55 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
56 | 29, 42, 56, 125, 97, 54, 100, 126, 164, 166, 165, 163, 161, 115, | |
57 | 114, 113, 150, 158, 159, 128, 136, 177, 178, 176, 142, 152, 173, 140 | |
1da177e4 LT |
58 | }; |
59 | ||
60 | static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }; | |
61 | ||
62 | static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr) | |
63 | { | |
64 | struct hidp_session *session; | |
1da177e4 LT |
65 | |
66 | BT_DBG(""); | |
67 | ||
cd11cdd2 | 68 | list_for_each_entry(session, &hidp_session_list, list) { |
1da177e4 LT |
69 | if (!bacmp(bdaddr, &session->bdaddr)) |
70 | return session; | |
71 | } | |
8035ded4 | 72 | |
1da177e4 LT |
73 | return NULL; |
74 | } | |
75 | ||
1da177e4 LT |
76 | static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci) |
77 | { | |
d31dbf6e | 78 | memset(ci, 0, sizeof(*ci)); |
1da177e4 LT |
79 | bacpy(&ci->bdaddr, &session->bdaddr); |
80 | ||
81 | ci->flags = session->flags; | |
dcc07647 | 82 | ci->state = BT_CONNECTED; |
1da177e4 LT |
83 | |
84 | ci->vendor = 0x0000; | |
85 | ci->product = 0x0000; | |
86 | ci->version = 0x0000; | |
1da177e4 LT |
87 | |
88 | if (session->input) { | |
89 | ci->vendor = session->input->id.vendor; | |
90 | ci->product = session->input->id.product; | |
91 | ci->version = session->input->id.version; | |
92 | if (session->input->name) | |
93 | strncpy(ci->name, session->input->name, 128); | |
94 | else | |
95 | strncpy(ci->name, "HID Boot Device", 128); | |
96 | } | |
e1aaadd4 MH |
97 | |
98 | if (session->hid) { | |
99 | ci->vendor = session->hid->vendor; | |
100 | ci->product = session->hid->product; | |
101 | ci->version = session->hid->version; | |
102 | strncpy(ci->name, session->hid->name, 128); | |
103 | } | |
1da177e4 LT |
104 | } |
105 | ||
91f5cca3 AM |
106 | static int hidp_queue_event(struct hidp_session *session, struct input_dev *dev, |
107 | unsigned int type, unsigned int code, int value) | |
1da177e4 | 108 | { |
1da177e4 | 109 | unsigned char newleds; |
e1aaadd4 | 110 | struct sk_buff *skb; |
1da177e4 | 111 | |
e1aaadd4 | 112 | BT_DBG("session %p type %d code %d value %d", session, type, code, value); |
1da177e4 LT |
113 | |
114 | if (type != EV_LED) | |
115 | return -1; | |
116 | ||
117 | newleds = (!!test_bit(LED_KANA, dev->led) << 3) | | |
118 | (!!test_bit(LED_COMPOSE, dev->led) << 3) | | |
119 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | | |
120 | (!!test_bit(LED_CAPSL, dev->led) << 1) | | |
121 | (!!test_bit(LED_NUML, dev->led)); | |
122 | ||
123 | if (session->leds == newleds) | |
124 | return 0; | |
125 | ||
126 | session->leds = newleds; | |
127 | ||
5a08ecce AE |
128 | skb = alloc_skb(3, GFP_ATOMIC); |
129 | if (!skb) { | |
1da177e4 LT |
130 | BT_ERR("Can't allocate memory for new frame"); |
131 | return -ENOMEM; | |
132 | } | |
133 | ||
134 | *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; | |
135 | *skb_put(skb, 1) = 0x01; | |
136 | *skb_put(skb, 1) = newleds; | |
137 | ||
138 | skb_queue_tail(&session->intr_transmit, skb); | |
139 | ||
140 | hidp_schedule(session); | |
141 | ||
142 | return 0; | |
143 | } | |
144 | ||
e1aaadd4 MH |
145 | static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
146 | { | |
5be39466 | 147 | struct hid_device *hid = input_get_drvdata(dev); |
e1aaadd4 MH |
148 | struct hidp_session *session = hid->driver_data; |
149 | ||
150 | return hidp_queue_event(session, dev, type, code, value); | |
151 | } | |
152 | ||
153 | static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) | |
154 | { | |
5be39466 | 155 | struct hidp_session *session = input_get_drvdata(dev); |
e1aaadd4 MH |
156 | |
157 | return hidp_queue_event(session, dev, type, code, value); | |
158 | } | |
159 | ||
1da177e4 LT |
160 | static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) |
161 | { | |
162 | struct input_dev *dev = session->input; | |
163 | unsigned char *keys = session->keys; | |
164 | unsigned char *udata = skb->data + 1; | |
165 | signed char *sdata = skb->data + 1; | |
166 | int i, size = skb->len - 1; | |
167 | ||
168 | switch (skb->data[0]) { | |
169 | case 0x01: /* Keyboard report */ | |
170 | for (i = 0; i < 8; i++) | |
171 | input_report_key(dev, hidp_keycode[i + 224], (udata[0] >> i) & 1); | |
172 | ||
173 | /* If all the key codes have been set to 0x01, it means | |
174 | * too many keys were pressed at the same time. */ | |
175 | if (!memcmp(udata + 2, hidp_mkeyspat, 6)) | |
176 | break; | |
177 | ||
178 | for (i = 2; i < 8; i++) { | |
179 | if (keys[i] > 3 && memscan(udata + 2, keys[i], 6) == udata + 8) { | |
180 | if (hidp_keycode[keys[i]]) | |
181 | input_report_key(dev, hidp_keycode[keys[i]], 0); | |
182 | else | |
183 | BT_ERR("Unknown key (scancode %#x) released.", keys[i]); | |
184 | } | |
185 | ||
186 | if (udata[i] > 3 && memscan(keys + 2, udata[i], 6) == keys + 8) { | |
187 | if (hidp_keycode[udata[i]]) | |
188 | input_report_key(dev, hidp_keycode[udata[i]], 1); | |
189 | else | |
190 | BT_ERR("Unknown key (scancode %#x) pressed.", udata[i]); | |
191 | } | |
192 | } | |
193 | ||
194 | memcpy(keys, udata, 8); | |
195 | break; | |
196 | ||
197 | case 0x02: /* Mouse report */ | |
198 | input_report_key(dev, BTN_LEFT, sdata[0] & 0x01); | |
199 | input_report_key(dev, BTN_RIGHT, sdata[0] & 0x02); | |
200 | input_report_key(dev, BTN_MIDDLE, sdata[0] & 0x04); | |
201 | input_report_key(dev, BTN_SIDE, sdata[0] & 0x08); | |
202 | input_report_key(dev, BTN_EXTRA, sdata[0] & 0x10); | |
203 | ||
204 | input_report_rel(dev, REL_X, sdata[1]); | |
205 | input_report_rel(dev, REL_Y, sdata[2]); | |
206 | ||
207 | if (size > 3) | |
208 | input_report_rel(dev, REL_WHEEL, sdata[3]); | |
209 | break; | |
210 | } | |
211 | ||
212 | input_sync(dev); | |
213 | } | |
214 | ||
6bf8268f | 215 | static int __hidp_send_ctrl_message(struct hidp_session *session, |
1d0c4da8 GP |
216 | unsigned char hdr, unsigned char *data, |
217 | int size) | |
6bf8268f BN |
218 | { |
219 | struct sk_buff *skb; | |
220 | ||
221 | BT_DBG("session %p data %p size %d", session, data, size); | |
222 | ||
794d1756 DH |
223 | if (atomic_read(&session->terminate)) |
224 | return -EIO; | |
225 | ||
5a08ecce AE |
226 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
227 | if (!skb) { | |
6bf8268f BN |
228 | BT_ERR("Can't allocate memory for new frame"); |
229 | return -ENOMEM; | |
230 | } | |
231 | ||
232 | *skb_put(skb, 1) = hdr; | |
233 | if (data && size > 0) | |
234 | memcpy(skb_put(skb, size), data, size); | |
235 | ||
236 | skb_queue_tail(&session->ctrl_transmit, skb); | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
6039aa73 | 241 | static int hidp_send_ctrl_message(struct hidp_session *session, |
6bf8268f BN |
242 | unsigned char hdr, unsigned char *data, int size) |
243 | { | |
244 | int err; | |
245 | ||
246 | err = __hidp_send_ctrl_message(session, hdr, data, size); | |
247 | ||
248 | hidp_schedule(session); | |
249 | ||
250 | return err; | |
251 | } | |
252 | ||
91f5cca3 AM |
253 | static int hidp_queue_report(struct hidp_session *session, |
254 | unsigned char *data, int size) | |
e1aaadd4 MH |
255 | { |
256 | struct sk_buff *skb; | |
257 | ||
6792b5ec | 258 | BT_DBG("session %p hid %p data %p size %d", session, session->hid, data, size); |
e1aaadd4 | 259 | |
5a08ecce AE |
260 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
261 | if (!skb) { | |
e1aaadd4 MH |
262 | BT_ERR("Can't allocate memory for new frame"); |
263 | return -ENOMEM; | |
264 | } | |
265 | ||
266 | *skb_put(skb, 1) = 0xa2; | |
267 | if (size > 0) | |
268 | memcpy(skb_put(skb, size), data, size); | |
269 | ||
270 | skb_queue_tail(&session->intr_transmit, skb); | |
271 | ||
272 | hidp_schedule(session); | |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
277 | static int hidp_send_report(struct hidp_session *session, struct hid_report *report) | |
278 | { | |
279 | unsigned char buf[32]; | |
280 | int rsize; | |
281 | ||
282 | rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
283 | if (rsize > sizeof(buf)) | |
284 | return -EIO; | |
285 | ||
286 | hid_output_report(report, buf); | |
287 | ||
288 | return hidp_queue_report(session, buf, rsize); | |
289 | } | |
290 | ||
0ff1731a AO |
291 | static int hidp_get_raw_report(struct hid_device *hid, |
292 | unsigned char report_number, | |
293 | unsigned char *data, size_t count, | |
294 | unsigned char report_type) | |
295 | { | |
296 | struct hidp_session *session = hid->driver_data; | |
297 | struct sk_buff *skb; | |
298 | size_t len; | |
299 | int numbered_reports = hid->report_enum[report_type].numbered; | |
794d1756 | 300 | int ret; |
0ff1731a | 301 | |
fd86c9be KR |
302 | if (atomic_read(&session->terminate)) |
303 | return -EIO; | |
304 | ||
0ff1731a AO |
305 | switch (report_type) { |
306 | case HID_FEATURE_REPORT: | |
307 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_FEATURE; | |
308 | break; | |
309 | case HID_INPUT_REPORT: | |
310 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_INPUT; | |
311 | break; | |
312 | case HID_OUTPUT_REPORT: | |
313 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_OUPUT; | |
314 | break; | |
315 | default: | |
316 | return -EINVAL; | |
317 | } | |
318 | ||
319 | if (mutex_lock_interruptible(&session->report_mutex)) | |
320 | return -ERESTARTSYS; | |
321 | ||
322 | /* Set up our wait, and send the report request to the device. */ | |
323 | session->waiting_report_type = report_type & HIDP_DATA_RTYPE_MASK; | |
324 | session->waiting_report_number = numbered_reports ? report_number : -1; | |
325 | set_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
326 | data[0] = report_number; | |
794d1756 DH |
327 | ret = hidp_send_ctrl_message(hid->driver_data, report_type, data, 1); |
328 | if (ret) | |
329 | goto err; | |
0ff1731a AO |
330 | |
331 | /* Wait for the return of the report. The returned report | |
332 | gets put in session->report_return. */ | |
333 | while (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) { | |
334 | int res; | |
335 | ||
336 | res = wait_event_interruptible_timeout(session->report_queue, | |
337 | !test_bit(HIDP_WAITING_FOR_RETURN, &session->flags), | |
338 | 5*HZ); | |
339 | if (res == 0) { | |
340 | /* timeout */ | |
794d1756 DH |
341 | ret = -EIO; |
342 | goto err; | |
0ff1731a AO |
343 | } |
344 | if (res < 0) { | |
345 | /* signal */ | |
794d1756 DH |
346 | ret = -ERESTARTSYS; |
347 | goto err; | |
0ff1731a AO |
348 | } |
349 | } | |
350 | ||
351 | skb = session->report_return; | |
352 | if (skb) { | |
353 | len = skb->len < count ? skb->len : count; | |
354 | memcpy(data, skb->data, len); | |
355 | ||
356 | kfree_skb(skb); | |
357 | session->report_return = NULL; | |
358 | } else { | |
359 | /* Device returned a HANDSHAKE, indicating protocol error. */ | |
360 | len = -EIO; | |
361 | } | |
362 | ||
363 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
364 | mutex_unlock(&session->report_mutex); | |
365 | ||
366 | return len; | |
367 | ||
794d1756 | 368 | err: |
0ff1731a AO |
369 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); |
370 | mutex_unlock(&session->report_mutex); | |
794d1756 | 371 | return ret; |
0ff1731a AO |
372 | } |
373 | ||
d4bfa033 JK |
374 | static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, size_t count, |
375 | unsigned char report_type) | |
2da31939 | 376 | { |
0825411a AO |
377 | struct hidp_session *session = hid->driver_data; |
378 | int ret; | |
379 | ||
d4bfa033 JK |
380 | switch (report_type) { |
381 | case HID_FEATURE_REPORT: | |
382 | report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE; | |
383 | break; | |
384 | case HID_OUTPUT_REPORT: | |
97e1efbb | 385 | report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_OUPUT; |
d4bfa033 JK |
386 | break; |
387 | default: | |
388 | return -EINVAL; | |
389 | } | |
390 | ||
0825411a AO |
391 | if (mutex_lock_interruptible(&session->report_mutex)) |
392 | return -ERESTARTSYS; | |
393 | ||
394 | /* Set up our wait, and send the report request to the device. */ | |
395 | set_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); | |
794d1756 DH |
396 | ret = hidp_send_ctrl_message(hid->driver_data, report_type, data, |
397 | count); | |
398 | if (ret) | |
0825411a | 399 | goto err; |
0825411a AO |
400 | |
401 | /* Wait for the ACK from the device. */ | |
402 | while (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) { | |
403 | int res; | |
404 | ||
405 | res = wait_event_interruptible_timeout(session->report_queue, | |
406 | !test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags), | |
407 | 10*HZ); | |
408 | if (res == 0) { | |
409 | /* timeout */ | |
410 | ret = -EIO; | |
411 | goto err; | |
412 | } | |
413 | if (res < 0) { | |
414 | /* signal */ | |
415 | ret = -ERESTARTSYS; | |
416 | goto err; | |
417 | } | |
418 | } | |
419 | ||
420 | if (!session->output_report_success) { | |
421 | ret = -EIO; | |
422 | goto err; | |
423 | } | |
424 | ||
425 | ret = count; | |
426 | ||
427 | err: | |
428 | clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); | |
429 | mutex_unlock(&session->report_mutex); | |
430 | return ret; | |
2da31939 JK |
431 | } |
432 | ||
1da177e4 LT |
433 | static void hidp_idle_timeout(unsigned long arg) |
434 | { | |
435 | struct hidp_session *session = (struct hidp_session *) arg; | |
436 | ||
7bb59df8 PH |
437 | atomic_inc(&session->terminate); |
438 | wake_up_process(session->task); | |
1da177e4 LT |
439 | } |
440 | ||
91f5cca3 | 441 | static void hidp_set_timer(struct hidp_session *session) |
1da177e4 LT |
442 | { |
443 | if (session->idle_to > 0) | |
444 | mod_timer(&session->timer, jiffies + HZ * session->idle_to); | |
445 | } | |
446 | ||
6039aa73 | 447 | static void hidp_del_timer(struct hidp_session *session) |
1da177e4 LT |
448 | { |
449 | if (session->idle_to > 0) | |
450 | del_timer(&session->timer); | |
451 | } | |
452 | ||
91f5cca3 AM |
453 | static void hidp_process_handshake(struct hidp_session *session, |
454 | unsigned char param) | |
1da177e4 LT |
455 | { |
456 | BT_DBG("session %p param 0x%02x", session, param); | |
0825411a | 457 | session->output_report_success = 0; /* default condition */ |
1da177e4 LT |
458 | |
459 | switch (param) { | |
460 | case HIDP_HSHK_SUCCESSFUL: | |
461 | /* FIXME: Call into SET_ GET_ handlers here */ | |
0825411a | 462 | session->output_report_success = 1; |
1da177e4 LT |
463 | break; |
464 | ||
465 | case HIDP_HSHK_NOT_READY: | |
466 | case HIDP_HSHK_ERR_INVALID_REPORT_ID: | |
467 | case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST: | |
468 | case HIDP_HSHK_ERR_INVALID_PARAMETER: | |
ab88f714 | 469 | if (test_and_clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) |
0ff1731a | 470 | wake_up_interruptible(&session->report_queue); |
ab88f714 | 471 | |
1da177e4 LT |
472 | /* FIXME: Call into SET_ GET_ handlers here */ |
473 | break; | |
474 | ||
475 | case HIDP_HSHK_ERR_UNKNOWN: | |
476 | break; | |
477 | ||
478 | case HIDP_HSHK_ERR_FATAL: | |
479 | /* Device requests a reboot, as this is the only way this error | |
8e87d142 | 480 | * can be recovered. */ |
1da177e4 LT |
481 | __hidp_send_ctrl_message(session, |
482 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0); | |
483 | break; | |
484 | ||
485 | default: | |
486 | __hidp_send_ctrl_message(session, | |
487 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
488 | break; | |
489 | } | |
0825411a AO |
490 | |
491 | /* Wake up the waiting thread. */ | |
ab88f714 | 492 | if (test_and_clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) |
0825411a | 493 | wake_up_interruptible(&session->report_queue); |
1da177e4 LT |
494 | } |
495 | ||
91f5cca3 AM |
496 | static void hidp_process_hid_control(struct hidp_session *session, |
497 | unsigned char param) | |
1da177e4 LT |
498 | { |
499 | BT_DBG("session %p param 0x%02x", session, param); | |
500 | ||
eff001e3 | 501 | if (param == HIDP_CTRL_VIRTUAL_CABLE_UNPLUG) { |
1da177e4 LT |
502 | /* Flush the transmit queues */ |
503 | skb_queue_purge(&session->ctrl_transmit); | |
504 | skb_queue_purge(&session->intr_transmit); | |
505 | ||
7bb59df8 PH |
506 | atomic_inc(&session->terminate); |
507 | wake_up_process(current); | |
1da177e4 LT |
508 | } |
509 | } | |
510 | ||
0ff1731a AO |
511 | /* Returns true if the passed-in skb should be freed by the caller. */ |
512 | static int hidp_process_data(struct hidp_session *session, struct sk_buff *skb, | |
91f5cca3 | 513 | unsigned char param) |
1da177e4 | 514 | { |
0ff1731a | 515 | int done_with_skb = 1; |
1da177e4 LT |
516 | BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param); |
517 | ||
518 | switch (param) { | |
519 | case HIDP_DATA_RTYPE_INPUT: | |
520 | hidp_set_timer(session); | |
521 | ||
522 | if (session->input) | |
523 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
524 | |
525 | if (session->hid) | |
526 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0); | |
1da177e4 LT |
527 | break; |
528 | ||
529 | case HIDP_DATA_RTYPE_OTHER: | |
530 | case HIDP_DATA_RTYPE_OUPUT: | |
531 | case HIDP_DATA_RTYPE_FEATURE: | |
532 | break; | |
533 | ||
534 | default: | |
535 | __hidp_send_ctrl_message(session, | |
536 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
537 | } | |
0ff1731a AO |
538 | |
539 | if (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags) && | |
540 | param == session->waiting_report_type) { | |
541 | if (session->waiting_report_number < 0 || | |
542 | session->waiting_report_number == skb->data[0]) { | |
543 | /* hidp_get_raw_report() is waiting on this report. */ | |
544 | session->report_return = skb; | |
545 | done_with_skb = 0; | |
546 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
547 | wake_up_interruptible(&session->report_queue); | |
548 | } | |
549 | } | |
550 | ||
551 | return done_with_skb; | |
1da177e4 LT |
552 | } |
553 | ||
91f5cca3 AM |
554 | static void hidp_recv_ctrl_frame(struct hidp_session *session, |
555 | struct sk_buff *skb) | |
1da177e4 LT |
556 | { |
557 | unsigned char hdr, type, param; | |
0ff1731a | 558 | int free_skb = 1; |
1da177e4 LT |
559 | |
560 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
561 | ||
562 | hdr = skb->data[0]; | |
563 | skb_pull(skb, 1); | |
564 | ||
565 | type = hdr & HIDP_HEADER_TRANS_MASK; | |
566 | param = hdr & HIDP_HEADER_PARAM_MASK; | |
567 | ||
568 | switch (type) { | |
569 | case HIDP_TRANS_HANDSHAKE: | |
570 | hidp_process_handshake(session, param); | |
571 | break; | |
572 | ||
573 | case HIDP_TRANS_HID_CONTROL: | |
574 | hidp_process_hid_control(session, param); | |
575 | break; | |
576 | ||
577 | case HIDP_TRANS_DATA: | |
0ff1731a | 578 | free_skb = hidp_process_data(session, skb, param); |
1da177e4 LT |
579 | break; |
580 | ||
581 | default: | |
582 | __hidp_send_ctrl_message(session, | |
583 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0); | |
584 | break; | |
585 | } | |
586 | ||
0ff1731a AO |
587 | if (free_skb) |
588 | kfree_skb(skb); | |
1da177e4 LT |
589 | } |
590 | ||
91f5cca3 AM |
591 | static void hidp_recv_intr_frame(struct hidp_session *session, |
592 | struct sk_buff *skb) | |
1da177e4 LT |
593 | { |
594 | unsigned char hdr; | |
595 | ||
596 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
597 | ||
598 | hdr = skb->data[0]; | |
599 | skb_pull(skb, 1); | |
600 | ||
601 | if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) { | |
602 | hidp_set_timer(session); | |
e1aaadd4 | 603 | |
1da177e4 LT |
604 | if (session->input) |
605 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
606 | |
607 | if (session->hid) { | |
608 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1); | |
609 | BT_DBG("report len %d", skb->len); | |
610 | } | |
1da177e4 LT |
611 | } else { |
612 | BT_DBG("Unsupported protocol header 0x%02x", hdr); | |
613 | } | |
614 | ||
615 | kfree_skb(skb); | |
616 | } | |
617 | ||
618 | static int hidp_send_frame(struct socket *sock, unsigned char *data, int len) | |
619 | { | |
620 | struct kvec iv = { data, len }; | |
621 | struct msghdr msg; | |
622 | ||
623 | BT_DBG("sock %p data %p len %d", sock, data, len); | |
624 | ||
625 | if (!len) | |
626 | return 0; | |
627 | ||
628 | memset(&msg, 0, sizeof(msg)); | |
629 | ||
630 | return kernel_sendmsg(sock, &msg, &iv, 1, len); | |
631 | } | |
632 | ||
679344e4 | 633 | static void hidp_process_intr_transmit(struct hidp_session *session) |
1da177e4 LT |
634 | { |
635 | struct sk_buff *skb; | |
636 | ||
637 | BT_DBG("session %p", session); | |
638 | ||
679344e4 GP |
639 | while ((skb = skb_dequeue(&session->intr_transmit))) { |
640 | if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) { | |
641 | skb_queue_head(&session->intr_transmit, skb); | |
1da177e4 LT |
642 | break; |
643 | } | |
644 | ||
645 | hidp_set_timer(session); | |
646 | kfree_skb(skb); | |
647 | } | |
679344e4 | 648 | } |
1da177e4 | 649 | |
679344e4 GP |
650 | static void hidp_process_ctrl_transmit(struct hidp_session *session) |
651 | { | |
652 | struct sk_buff *skb; | |
653 | ||
654 | BT_DBG("session %p", session); | |
655 | ||
656 | while ((skb = skb_dequeue(&session->ctrl_transmit))) { | |
657 | if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) { | |
658 | skb_queue_head(&session->ctrl_transmit, skb); | |
1da177e4 LT |
659 | break; |
660 | } | |
661 | ||
662 | hidp_set_timer(session); | |
663 | kfree_skb(skb); | |
664 | } | |
1da177e4 LT |
665 | } |
666 | ||
667 | static int hidp_session(void *arg) | |
668 | { | |
669 | struct hidp_session *session = arg; | |
670 | struct sock *ctrl_sk = session->ctrl_sock->sk; | |
671 | struct sock *intr_sk = session->intr_sock->sk; | |
672 | struct sk_buff *skb; | |
1da177e4 LT |
673 | wait_queue_t ctrl_wait, intr_wait; |
674 | ||
675 | BT_DBG("session %p", session); | |
676 | ||
25df0845 | 677 | __module_get(THIS_MODULE); |
1da177e4 | 678 | set_user_nice(current, -15); |
1da177e4 LT |
679 | |
680 | init_waitqueue_entry(&ctrl_wait, current); | |
681 | init_waitqueue_entry(&intr_wait, current); | |
aa395145 ED |
682 | add_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); |
683 | add_wait_queue(sk_sleep(intr_sk), &intr_wait); | |
0f69dca2 AO |
684 | session->waiting_for_startup = 0; |
685 | wake_up_interruptible(&session->startup_queue); | |
7bb59df8 PH |
686 | set_current_state(TASK_INTERRUPTIBLE); |
687 | while (!atomic_read(&session->terminate)) { | |
17f09a7e SJ |
688 | if (ctrl_sk->sk_state != BT_CONNECTED || |
689 | intr_sk->sk_state != BT_CONNECTED) | |
1da177e4 LT |
690 | break; |
691 | ||
dc0da5cd | 692 | while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) { |
1da177e4 | 693 | skb_orphan(skb); |
44935720 | 694 | if (!skb_linearize(skb)) |
dc0da5cd | 695 | hidp_recv_intr_frame(session, skb); |
44935720 MM |
696 | else |
697 | kfree_skb(skb); | |
1da177e4 LT |
698 | } |
699 | ||
679344e4 GP |
700 | hidp_process_intr_transmit(session); |
701 | ||
dc0da5cd | 702 | while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) { |
1da177e4 | 703 | skb_orphan(skb); |
44935720 | 704 | if (!skb_linearize(skb)) |
dc0da5cd | 705 | hidp_recv_ctrl_frame(session, skb); |
44935720 MM |
706 | else |
707 | kfree_skb(skb); | |
1da177e4 LT |
708 | } |
709 | ||
679344e4 | 710 | hidp_process_ctrl_transmit(session); |
1da177e4 LT |
711 | |
712 | schedule(); | |
7bb59df8 | 713 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 LT |
714 | } |
715 | set_current_state(TASK_RUNNING); | |
fd86c9be | 716 | atomic_inc(&session->terminate); |
aa395145 ED |
717 | remove_wait_queue(sk_sleep(intr_sk), &intr_wait); |
718 | remove_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); | |
1da177e4 | 719 | |
794d1756 DH |
720 | clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); |
721 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
722 | wake_up_interruptible(&session->report_queue); | |
723 | ||
1da177e4 LT |
724 | down_write(&hidp_session_sem); |
725 | ||
726 | hidp_del_timer(session); | |
727 | ||
1da177e4 LT |
728 | if (session->input) { |
729 | input_unregister_device(session->input); | |
34abf91f | 730 | session->input = NULL; |
1da177e4 LT |
731 | } |
732 | ||
e1aaadd4 | 733 | if (session->hid) { |
85cdaf52 | 734 | hid_destroy_device(session->hid); |
edad6388 | 735 | session->hid = NULL; |
e1aaadd4 MH |
736 | } |
737 | ||
ec8dab36 MH |
738 | /* Wakeup user-space polling for socket errors */ |
739 | session->intr_sock->sk->sk_err = EUNATCH; | |
740 | session->ctrl_sock->sk->sk_err = EUNATCH; | |
741 | ||
742 | hidp_schedule(session); | |
743 | ||
1c39858b DW |
744 | fput(session->intr_sock->file); |
745 | ||
aa395145 | 746 | wait_event_timeout(*(sk_sleep(ctrl_sk)), |
1c39858b DW |
747 | (ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500)); |
748 | ||
749 | fput(session->ctrl_sock->file); | |
750 | ||
fc225c3f | 751 | list_del(&session->list); |
1c39858b | 752 | |
1da177e4 LT |
753 | up_write(&hidp_session_sem); |
754 | ||
1c97e94c | 755 | kfree(session->rd_data); |
1da177e4 | 756 | kfree(session); |
25df0845 | 757 | module_put_and_exit(0); |
1da177e4 LT |
758 | return 0; |
759 | } | |
760 | ||
3e90dc86 | 761 | static struct hci_conn *hidp_get_connection(struct hidp_session *session) |
0a85b964 MH |
762 | { |
763 | bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src; | |
764 | bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst; | |
1785dbf9 | 765 | struct hci_conn *conn; |
0a85b964 | 766 | struct hci_dev *hdev; |
0a85b964 MH |
767 | |
768 | hdev = hci_get_route(dst, src); | |
769 | if (!hdev) | |
770 | return NULL; | |
771 | ||
09fd0de5 | 772 | hci_dev_lock(hdev); |
1785dbf9 | 773 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
09fd0de5 | 774 | hci_dev_unlock(hdev); |
0a85b964 MH |
775 | |
776 | hci_dev_put(hdev); | |
777 | ||
1785dbf9 | 778 | return conn; |
0a85b964 MH |
779 | } |
780 | ||
91f5cca3 AM |
781 | static int hidp_setup_input(struct hidp_session *session, |
782 | struct hidp_connadd_req *req) | |
1da177e4 | 783 | { |
c500c971 | 784 | struct input_dev *input; |
3415a5fd | 785 | int i; |
1da177e4 | 786 | |
c500c971 JS |
787 | input = input_allocate_device(); |
788 | if (!input) | |
789 | return -ENOMEM; | |
790 | ||
791 | session->input = input; | |
792 | ||
5be39466 | 793 | input_set_drvdata(input, session); |
1da177e4 | 794 | |
34abf91f DT |
795 | input->name = "Bluetooth HID Boot Protocol Device"; |
796 | ||
1da177e4 LT |
797 | input->id.bustype = BUS_BLUETOOTH; |
798 | input->id.vendor = req->vendor; | |
799 | input->id.product = req->product; | |
800 | input->id.version = req->version; | |
801 | ||
802 | if (req->subclass & 0x40) { | |
803 | set_bit(EV_KEY, input->evbit); | |
804 | set_bit(EV_LED, input->evbit); | |
805 | set_bit(EV_REP, input->evbit); | |
806 | ||
807 | set_bit(LED_NUML, input->ledbit); | |
808 | set_bit(LED_CAPSL, input->ledbit); | |
809 | set_bit(LED_SCROLLL, input->ledbit); | |
810 | set_bit(LED_COMPOSE, input->ledbit); | |
811 | set_bit(LED_KANA, input->ledbit); | |
812 | ||
813 | for (i = 0; i < sizeof(hidp_keycode); i++) | |
814 | set_bit(hidp_keycode[i], input->keybit); | |
815 | clear_bit(0, input->keybit); | |
816 | } | |
817 | ||
818 | if (req->subclass & 0x80) { | |
7b19ada2 JS |
819 | input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
820 | input->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | | |
821 | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); | |
822 | input->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); | |
823 | input->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) | | |
824 | BIT_MASK(BTN_EXTRA); | |
825 | input->relbit[0] |= BIT_MASK(REL_WHEEL); | |
1da177e4 LT |
826 | } |
827 | ||
1785dbf9 | 828 | input->dev.parent = &session->conn->dev; |
0a85b964 | 829 | |
1da177e4 LT |
830 | input->event = hidp_input_event; |
831 | ||
edad6388 | 832 | return 0; |
1da177e4 LT |
833 | } |
834 | ||
f5ffd462 MH |
835 | static int hidp_open(struct hid_device *hid) |
836 | { | |
837 | return 0; | |
838 | } | |
839 | ||
840 | static void hidp_close(struct hid_device *hid) | |
841 | { | |
842 | } | |
843 | ||
c500c971 JS |
844 | static int hidp_parse(struct hid_device *hid) |
845 | { | |
846 | struct hidp_session *session = hid->driver_data; | |
c500c971 | 847 | |
15c697ce MP |
848 | return hid_parse_report(session->hid, session->rd_data, |
849 | session->rd_size); | |
c500c971 JS |
850 | } |
851 | ||
852 | static int hidp_start(struct hid_device *hid) | |
853 | { | |
854 | struct hidp_session *session = hid->driver_data; | |
855 | struct hid_report *report; | |
856 | ||
142c69c6 DH |
857 | if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) |
858 | return 0; | |
859 | ||
c500c971 JS |
860 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT]. |
861 | report_list, list) | |
862 | hidp_send_report(session, report); | |
863 | ||
864 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT]. | |
865 | report_list, list) | |
866 | hidp_send_report(session, report); | |
867 | ||
c500c971 JS |
868 | return 0; |
869 | } | |
870 | ||
871 | static void hidp_stop(struct hid_device *hid) | |
872 | { | |
873 | struct hidp_session *session = hid->driver_data; | |
874 | ||
875 | skb_queue_purge(&session->ctrl_transmit); | |
876 | skb_queue_purge(&session->intr_transmit); | |
877 | ||
c500c971 JS |
878 | hid->claimed = 0; |
879 | } | |
880 | ||
881 | static struct hid_ll_driver hidp_hid_driver = { | |
882 | .parse = hidp_parse, | |
883 | .start = hidp_start, | |
884 | .stop = hidp_stop, | |
885 | .open = hidp_open, | |
886 | .close = hidp_close, | |
887 | .hidinput_input_event = hidp_hidinput_event, | |
888 | }; | |
889 | ||
0f69dca2 AO |
890 | /* This function sets up the hid device. It does not add it |
891 | to the HID system. That is done in hidp_add_connection(). */ | |
85cdaf52 | 892 | static int hidp_setup_hid(struct hidp_session *session, |
91f5cca3 | 893 | struct hidp_connadd_req *req) |
e1aaadd4 | 894 | { |
c500c971 | 895 | struct hid_device *hid; |
edad6388 | 896 | int err; |
e1aaadd4 | 897 | |
15c697ce MP |
898 | session->rd_data = kzalloc(req->rd_size, GFP_KERNEL); |
899 | if (!session->rd_data) | |
900 | return -ENOMEM; | |
901 | ||
902 | if (copy_from_user(session->rd_data, req->rd_data, req->rd_size)) { | |
903 | err = -EFAULT; | |
904 | goto fault; | |
905 | } | |
906 | session->rd_size = req->rd_size; | |
907 | ||
c500c971 | 908 | hid = hid_allocate_device(); |
15c697ce MP |
909 | if (IS_ERR(hid)) { |
910 | err = PTR_ERR(hid); | |
911 | goto fault; | |
912 | } | |
e1aaadd4 | 913 | |
c500c971 | 914 | session->hid = hid; |
15c697ce | 915 | |
e1aaadd4 MH |
916 | hid->driver_data = session; |
917 | ||
e1aaadd4 MH |
918 | hid->bus = BUS_BLUETOOTH; |
919 | hid->vendor = req->vendor; | |
920 | hid->product = req->product; | |
921 | hid->version = req->version; | |
c500c971 | 922 | hid->country = req->country; |
e1aaadd4 | 923 | |
0a9ab9bd | 924 | strncpy(hid->name, req->name, sizeof(req->name) - 1); |
fcb73338 AE |
925 | |
926 | snprintf(hid->phys, sizeof(hid->phys), "%pMR", | |
927 | &bt_sk(session->ctrl_sock->sk)->src); | |
928 | ||
929 | snprintf(hid->uniq, sizeof(hid->uniq), "%pMR", | |
930 | &bt_sk(session->ctrl_sock->sk)->dst); | |
e1aaadd4 | 931 | |
1785dbf9 | 932 | hid->dev.parent = &session->conn->dev; |
c500c971 | 933 | hid->ll_driver = &hidp_hid_driver; |
85cdaf52 | 934 | |
0ff1731a | 935 | hid->hid_get_raw_report = hidp_get_raw_report; |
2da31939 JK |
936 | hid->hid_output_raw_report = hidp_output_raw_report; |
937 | ||
4529eefa LS |
938 | /* True if device is blacklisted in drivers/hid/hid-core.c */ |
939 | if (hid_ignore(hid)) { | |
940 | hid_destroy_device(session->hid); | |
941 | session->hid = NULL; | |
942 | return -ENODEV; | |
943 | } | |
944 | ||
c500c971 | 945 | return 0; |
edad6388 | 946 | |
15c697ce MP |
947 | fault: |
948 | kfree(session->rd_data); | |
949 | session->rd_data = NULL; | |
950 | ||
edad6388 | 951 | return err; |
e1aaadd4 MH |
952 | } |
953 | ||
1da177e4 LT |
954 | int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) |
955 | { | |
956 | struct hidp_session *session, *s; | |
aabf6f89 | 957 | int vendor, product; |
1da177e4 LT |
958 | int err; |
959 | ||
960 | BT_DBG(""); | |
961 | ||
b3916db3 DH |
962 | if (!l2cap_is_socket(ctrl_sock) || !l2cap_is_socket(intr_sock)) |
963 | return -EINVAL; | |
1da177e4 LT |
964 | if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) || |
965 | bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst)) | |
966 | return -ENOTUNIQ; | |
967 | ||
e1aaadd4 MH |
968 | BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size); |
969 | ||
1da177e4 LT |
970 | down_write(&hidp_session_sem); |
971 | ||
972 | s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst); | |
dcc07647 | 973 | if (s) { |
81b25cd0 GP |
974 | up_write(&hidp_session_sem); |
975 | return -EEXIST; | |
976 | } | |
977 | ||
978 | session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL); | |
979 | if (!session) { | |
980 | up_write(&hidp_session_sem); | |
981 | return -ENOMEM; | |
1da177e4 LT |
982 | } |
983 | ||
984 | bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst); | |
985 | ||
0c1bc5c6 GP |
986 | session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->chan->omtu, |
987 | l2cap_pi(ctrl_sock->sk)->chan->imtu); | |
988 | session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->chan->omtu, | |
989 | l2cap_pi(intr_sock->sk)->chan->imtu); | |
1da177e4 LT |
990 | |
991 | BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu); | |
992 | ||
993 | session->ctrl_sock = ctrl_sock; | |
994 | session->intr_sock = intr_sock; | |
1da177e4 | 995 | |
3c32fa93 GP |
996 | session->conn = hidp_get_connection(session); |
997 | if (!session->conn) { | |
998 | err = -ENOTCONN; | |
999 | goto failed; | |
1000 | } | |
1001 | ||
b24b8a24 | 1002 | setup_timer(&session->timer, hidp_idle_timeout, (unsigned long)session); |
1da177e4 LT |
1003 | |
1004 | skb_queue_head_init(&session->ctrl_transmit); | |
1005 | skb_queue_head_init(&session->intr_transmit); | |
1006 | ||
0ff1731a AO |
1007 | mutex_init(&session->report_mutex); |
1008 | init_waitqueue_head(&session->report_queue); | |
0f69dca2 AO |
1009 | init_waitqueue_head(&session->startup_queue); |
1010 | session->waiting_for_startup = 1; | |
1da177e4 LT |
1011 | session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); |
1012 | session->idle_to = req->idle_to; | |
1013 | ||
fc225c3f | 1014 | list_add(&session->list, &hidp_session_list); |
1785dbf9 | 1015 | |
c500c971 | 1016 | if (req->rd_size > 0) { |
85cdaf52 | 1017 | err = hidp_setup_hid(session, req); |
4529eefa | 1018 | if (err && err != -ENODEV) |
edad6388 | 1019 | goto purge; |
c500c971 JS |
1020 | } |
1021 | ||
1022 | if (!session->hid) { | |
1023 | err = hidp_setup_input(session, req); | |
1024 | if (err < 0) | |
edad6388 | 1025 | goto purge; |
85cdaf52 | 1026 | } |
e1aaadd4 | 1027 | |
1da177e4 LT |
1028 | hidp_set_timer(session); |
1029 | ||
aabf6f89 SJ |
1030 | if (session->hid) { |
1031 | vendor = session->hid->vendor; | |
1032 | product = session->hid->product; | |
1033 | } else if (session->input) { | |
1034 | vendor = session->input->id.vendor; | |
1035 | product = session->input->id.product; | |
1036 | } else { | |
1037 | vendor = 0x0000; | |
1038 | product = 0x0000; | |
1039 | } | |
1040 | ||
1041 | session->task = kthread_run(hidp_session, session, "khidpd_%04x%04x", | |
1042 | vendor, product); | |
1043 | if (IS_ERR(session->task)) { | |
1044 | err = PTR_ERR(session->task); | |
1da177e4 | 1045 | goto unlink; |
aabf6f89 SJ |
1046 | } |
1047 | ||
0f69dca2 AO |
1048 | while (session->waiting_for_startup) { |
1049 | wait_event_interruptible(session->startup_queue, | |
1050 | !session->waiting_for_startup); | |
1051 | } | |
1052 | ||
3415a5fd GP |
1053 | if (session->hid) |
1054 | err = hid_add_device(session->hid); | |
1055 | else | |
1056 | err = input_register_device(session->input); | |
1057 | ||
e9d5cb54 PH |
1058 | if (err < 0) { |
1059 | atomic_inc(&session->terminate); | |
1060 | wake_up_process(session->task); | |
1061 | up_write(&hidp_session_sem); | |
1062 | return err; | |
1063 | } | |
1da177e4 LT |
1064 | |
1065 | if (session->input) { | |
1066 | hidp_send_ctrl_message(session, | |
1067 | HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0); | |
1068 | session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE); | |
1069 | ||
1070 | session->leds = 0xff; | |
1071 | hidp_input_event(session->input, EV_LED, 0, 0); | |
1072 | } | |
1073 | ||
1074 | up_write(&hidp_session_sem); | |
1075 | return 0; | |
1076 | ||
1077 | unlink: | |
1078 | hidp_del_timer(session); | |
1079 | ||
edad6388 | 1080 | if (session->input) { |
1da177e4 | 1081 | input_unregister_device(session->input); |
edad6388 MH |
1082 | session->input = NULL; |
1083 | } | |
1084 | ||
1085 | if (session->hid) { | |
85cdaf52 | 1086 | hid_destroy_device(session->hid); |
edad6388 MH |
1087 | session->hid = NULL; |
1088 | } | |
1089 | ||
15c697ce MP |
1090 | kfree(session->rd_data); |
1091 | session->rd_data = NULL; | |
1092 | ||
edad6388 | 1093 | purge: |
fc225c3f | 1094 | list_del(&session->list); |
1785dbf9 | 1095 | |
c500c971 JS |
1096 | skb_queue_purge(&session->ctrl_transmit); |
1097 | skb_queue_purge(&session->intr_transmit); | |
edad6388 | 1098 | |
c500c971 JS |
1099 | failed: |
1100 | up_write(&hidp_session_sem); | |
e1aaadd4 | 1101 | |
1da177e4 LT |
1102 | kfree(session); |
1103 | return err; | |
1104 | } | |
1105 | ||
1106 | int hidp_del_connection(struct hidp_conndel_req *req) | |
1107 | { | |
1108 | struct hidp_session *session; | |
1109 | int err = 0; | |
1110 | ||
1111 | BT_DBG(""); | |
1112 | ||
1113 | down_read(&hidp_session_sem); | |
1114 | ||
1115 | session = __hidp_get_session(&req->bdaddr); | |
1116 | if (session) { | |
1117 | if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) { | |
1118 | hidp_send_ctrl_message(session, | |
1119 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0); | |
1120 | } else { | |
1121 | /* Flush the transmit queues */ | |
1122 | skb_queue_purge(&session->ctrl_transmit); | |
1123 | skb_queue_purge(&session->intr_transmit); | |
1124 | ||
7bb59df8 PH |
1125 | atomic_inc(&session->terminate); |
1126 | wake_up_process(session->task); | |
1da177e4 LT |
1127 | } |
1128 | } else | |
1129 | err = -ENOENT; | |
1130 | ||
1131 | up_read(&hidp_session_sem); | |
1132 | return err; | |
1133 | } | |
1134 | ||
1135 | int hidp_get_connlist(struct hidp_connlist_req *req) | |
1136 | { | |
cd11cdd2 | 1137 | struct hidp_session *session; |
1da177e4 LT |
1138 | int err = 0, n = 0; |
1139 | ||
1140 | BT_DBG(""); | |
1141 | ||
1142 | down_read(&hidp_session_sem); | |
1143 | ||
cd11cdd2 | 1144 | list_for_each_entry(session, &hidp_session_list, list) { |
1da177e4 LT |
1145 | struct hidp_conninfo ci; |
1146 | ||
1da177e4 LT |
1147 | __hidp_copy_session(session, &ci); |
1148 | ||
1149 | if (copy_to_user(req->ci, &ci, sizeof(ci))) { | |
1150 | err = -EFAULT; | |
1151 | break; | |
1152 | } | |
1153 | ||
1154 | if (++n >= req->cnum) | |
1155 | break; | |
1156 | ||
1157 | req->ci++; | |
1158 | } | |
1159 | req->cnum = n; | |
1160 | ||
1161 | up_read(&hidp_session_sem); | |
1162 | return err; | |
1163 | } | |
1164 | ||
1165 | int hidp_get_conninfo(struct hidp_conninfo *ci) | |
1166 | { | |
1167 | struct hidp_session *session; | |
1168 | int err = 0; | |
1169 | ||
1170 | down_read(&hidp_session_sem); | |
1171 | ||
1172 | session = __hidp_get_session(&ci->bdaddr); | |
1173 | if (session) | |
1174 | __hidp_copy_session(session, ci); | |
1175 | else | |
1176 | err = -ENOENT; | |
1177 | ||
1178 | up_read(&hidp_session_sem); | |
1179 | return err; | |
1180 | } | |
1181 | ||
1182 | static int __init hidp_init(void) | |
1183 | { | |
1da177e4 LT |
1184 | BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION); |
1185 | ||
8215d557 | 1186 | return hidp_init_sockets(); |
1da177e4 LT |
1187 | } |
1188 | ||
1189 | static void __exit hidp_exit(void) | |
1190 | { | |
1191 | hidp_cleanup_sockets(); | |
1192 | } | |
1193 | ||
1194 | module_init(hidp_init); | |
1195 | module_exit(hidp_exit); | |
1196 | ||
1197 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
1198 | MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION); | |
1199 | MODULE_VERSION(VERSION); | |
1200 | MODULE_LICENSE("GPL"); | |
1201 | MODULE_ALIAS("bt-proto-6"); |