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 | 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 | ||
76 | static void __hidp_link_session(struct hidp_session *session) | |
77 | { | |
1da177e4 LT |
78 | list_add(&session->list, &hidp_session_list); |
79 | } | |
80 | ||
81 | static void __hidp_unlink_session(struct hidp_session *session) | |
82 | { | |
edad6388 MH |
83 | hci_conn_put_device(session->conn); |
84 | ||
1da177e4 | 85 | list_del(&session->list); |
1da177e4 LT |
86 | } |
87 | ||
88 | static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci) | |
89 | { | |
d31dbf6e | 90 | memset(ci, 0, sizeof(*ci)); |
1da177e4 LT |
91 | bacpy(&ci->bdaddr, &session->bdaddr); |
92 | ||
93 | ci->flags = session->flags; | |
94 | ci->state = session->state; | |
95 | ||
96 | ci->vendor = 0x0000; | |
97 | ci->product = 0x0000; | |
98 | ci->version = 0x0000; | |
1da177e4 LT |
99 | |
100 | if (session->input) { | |
101 | ci->vendor = session->input->id.vendor; | |
102 | ci->product = session->input->id.product; | |
103 | ci->version = session->input->id.version; | |
104 | if (session->input->name) | |
105 | strncpy(ci->name, session->input->name, 128); | |
106 | else | |
107 | strncpy(ci->name, "HID Boot Device", 128); | |
108 | } | |
e1aaadd4 MH |
109 | |
110 | if (session->hid) { | |
111 | ci->vendor = session->hid->vendor; | |
112 | ci->product = session->hid->product; | |
113 | ci->version = session->hid->version; | |
114 | strncpy(ci->name, session->hid->name, 128); | |
115 | } | |
1da177e4 LT |
116 | } |
117 | ||
91f5cca3 AM |
118 | static int hidp_queue_event(struct hidp_session *session, struct input_dev *dev, |
119 | unsigned int type, unsigned int code, int value) | |
1da177e4 | 120 | { |
1da177e4 | 121 | unsigned char newleds; |
e1aaadd4 | 122 | struct sk_buff *skb; |
1da177e4 | 123 | |
e1aaadd4 | 124 | BT_DBG("session %p type %d code %d value %d", session, type, code, value); |
1da177e4 LT |
125 | |
126 | if (type != EV_LED) | |
127 | return -1; | |
128 | ||
129 | newleds = (!!test_bit(LED_KANA, dev->led) << 3) | | |
130 | (!!test_bit(LED_COMPOSE, dev->led) << 3) | | |
131 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | | |
132 | (!!test_bit(LED_CAPSL, dev->led) << 1) | | |
133 | (!!test_bit(LED_NUML, dev->led)); | |
134 | ||
135 | if (session->leds == newleds) | |
136 | return 0; | |
137 | ||
138 | session->leds = newleds; | |
139 | ||
5a08ecce AE |
140 | skb = alloc_skb(3, GFP_ATOMIC); |
141 | if (!skb) { | |
1da177e4 LT |
142 | BT_ERR("Can't allocate memory for new frame"); |
143 | return -ENOMEM; | |
144 | } | |
145 | ||
146 | *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; | |
147 | *skb_put(skb, 1) = 0x01; | |
148 | *skb_put(skb, 1) = newleds; | |
149 | ||
150 | skb_queue_tail(&session->intr_transmit, skb); | |
151 | ||
152 | hidp_schedule(session); | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
e1aaadd4 MH |
157 | static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
158 | { | |
5be39466 | 159 | struct hid_device *hid = input_get_drvdata(dev); |
e1aaadd4 MH |
160 | struct hidp_session *session = hid->driver_data; |
161 | ||
162 | return hidp_queue_event(session, dev, type, code, value); | |
163 | } | |
164 | ||
165 | static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) | |
166 | { | |
5be39466 | 167 | struct hidp_session *session = input_get_drvdata(dev); |
e1aaadd4 MH |
168 | |
169 | return hidp_queue_event(session, dev, type, code, value); | |
170 | } | |
171 | ||
1da177e4 LT |
172 | static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) |
173 | { | |
174 | struct input_dev *dev = session->input; | |
175 | unsigned char *keys = session->keys; | |
176 | unsigned char *udata = skb->data + 1; | |
177 | signed char *sdata = skb->data + 1; | |
178 | int i, size = skb->len - 1; | |
179 | ||
180 | switch (skb->data[0]) { | |
181 | case 0x01: /* Keyboard report */ | |
182 | for (i = 0; i < 8; i++) | |
183 | input_report_key(dev, hidp_keycode[i + 224], (udata[0] >> i) & 1); | |
184 | ||
185 | /* If all the key codes have been set to 0x01, it means | |
186 | * too many keys were pressed at the same time. */ | |
187 | if (!memcmp(udata + 2, hidp_mkeyspat, 6)) | |
188 | break; | |
189 | ||
190 | for (i = 2; i < 8; i++) { | |
191 | if (keys[i] > 3 && memscan(udata + 2, keys[i], 6) == udata + 8) { | |
192 | if (hidp_keycode[keys[i]]) | |
193 | input_report_key(dev, hidp_keycode[keys[i]], 0); | |
194 | else | |
195 | BT_ERR("Unknown key (scancode %#x) released.", keys[i]); | |
196 | } | |
197 | ||
198 | if (udata[i] > 3 && memscan(keys + 2, udata[i], 6) == keys + 8) { | |
199 | if (hidp_keycode[udata[i]]) | |
200 | input_report_key(dev, hidp_keycode[udata[i]], 1); | |
201 | else | |
202 | BT_ERR("Unknown key (scancode %#x) pressed.", udata[i]); | |
203 | } | |
204 | } | |
205 | ||
206 | memcpy(keys, udata, 8); | |
207 | break; | |
208 | ||
209 | case 0x02: /* Mouse report */ | |
210 | input_report_key(dev, BTN_LEFT, sdata[0] & 0x01); | |
211 | input_report_key(dev, BTN_RIGHT, sdata[0] & 0x02); | |
212 | input_report_key(dev, BTN_MIDDLE, sdata[0] & 0x04); | |
213 | input_report_key(dev, BTN_SIDE, sdata[0] & 0x08); | |
214 | input_report_key(dev, BTN_EXTRA, sdata[0] & 0x10); | |
215 | ||
216 | input_report_rel(dev, REL_X, sdata[1]); | |
217 | input_report_rel(dev, REL_Y, sdata[2]); | |
218 | ||
219 | if (size > 3) | |
220 | input_report_rel(dev, REL_WHEEL, sdata[3]); | |
221 | break; | |
222 | } | |
223 | ||
224 | input_sync(dev); | |
225 | } | |
226 | ||
6bf8268f | 227 | static int __hidp_send_ctrl_message(struct hidp_session *session, |
1d0c4da8 GP |
228 | unsigned char hdr, unsigned char *data, |
229 | int size) | |
6bf8268f BN |
230 | { |
231 | struct sk_buff *skb; | |
232 | ||
233 | BT_DBG("session %p data %p size %d", session, data, size); | |
234 | ||
794d1756 DH |
235 | if (atomic_read(&session->terminate)) |
236 | return -EIO; | |
237 | ||
5a08ecce AE |
238 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
239 | if (!skb) { | |
6bf8268f BN |
240 | BT_ERR("Can't allocate memory for new frame"); |
241 | return -ENOMEM; | |
242 | } | |
243 | ||
244 | *skb_put(skb, 1) = hdr; | |
245 | if (data && size > 0) | |
246 | memcpy(skb_put(skb, size), data, size); | |
247 | ||
248 | skb_queue_tail(&session->ctrl_transmit, skb); | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
6039aa73 | 253 | static int hidp_send_ctrl_message(struct hidp_session *session, |
6bf8268f BN |
254 | unsigned char hdr, unsigned char *data, int size) |
255 | { | |
256 | int err; | |
257 | ||
258 | err = __hidp_send_ctrl_message(session, hdr, data, size); | |
259 | ||
260 | hidp_schedule(session); | |
261 | ||
262 | return err; | |
263 | } | |
264 | ||
91f5cca3 AM |
265 | static int hidp_queue_report(struct hidp_session *session, |
266 | unsigned char *data, int size) | |
e1aaadd4 MH |
267 | { |
268 | struct sk_buff *skb; | |
269 | ||
6792b5ec | 270 | BT_DBG("session %p hid %p data %p size %d", session, session->hid, data, size); |
e1aaadd4 | 271 | |
5a08ecce AE |
272 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
273 | if (!skb) { | |
e1aaadd4 MH |
274 | BT_ERR("Can't allocate memory for new frame"); |
275 | return -ENOMEM; | |
276 | } | |
277 | ||
278 | *skb_put(skb, 1) = 0xa2; | |
279 | if (size > 0) | |
280 | memcpy(skb_put(skb, size), data, size); | |
281 | ||
282 | skb_queue_tail(&session->intr_transmit, skb); | |
283 | ||
284 | hidp_schedule(session); | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | static int hidp_send_report(struct hidp_session *session, struct hid_report *report) | |
290 | { | |
291 | unsigned char buf[32]; | |
292 | int rsize; | |
293 | ||
294 | rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
295 | if (rsize > sizeof(buf)) | |
296 | return -EIO; | |
297 | ||
298 | hid_output_report(report, buf); | |
299 | ||
300 | return hidp_queue_report(session, buf, rsize); | |
301 | } | |
302 | ||
0ff1731a AO |
303 | static int hidp_get_raw_report(struct hid_device *hid, |
304 | unsigned char report_number, | |
305 | unsigned char *data, size_t count, | |
306 | unsigned char report_type) | |
307 | { | |
308 | struct hidp_session *session = hid->driver_data; | |
309 | struct sk_buff *skb; | |
310 | size_t len; | |
311 | int numbered_reports = hid->report_enum[report_type].numbered; | |
794d1756 | 312 | int ret; |
0ff1731a AO |
313 | |
314 | switch (report_type) { | |
315 | case HID_FEATURE_REPORT: | |
316 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_FEATURE; | |
317 | break; | |
318 | case HID_INPUT_REPORT: | |
319 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_INPUT; | |
320 | break; | |
321 | case HID_OUTPUT_REPORT: | |
322 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_OUPUT; | |
323 | break; | |
324 | default: | |
325 | return -EINVAL; | |
326 | } | |
327 | ||
328 | if (mutex_lock_interruptible(&session->report_mutex)) | |
329 | return -ERESTARTSYS; | |
330 | ||
331 | /* Set up our wait, and send the report request to the device. */ | |
332 | session->waiting_report_type = report_type & HIDP_DATA_RTYPE_MASK; | |
333 | session->waiting_report_number = numbered_reports ? report_number : -1; | |
334 | set_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
335 | data[0] = report_number; | |
794d1756 DH |
336 | ret = hidp_send_ctrl_message(hid->driver_data, report_type, data, 1); |
337 | if (ret) | |
338 | goto err; | |
0ff1731a AO |
339 | |
340 | /* Wait for the return of the report. The returned report | |
341 | gets put in session->report_return. */ | |
342 | while (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) { | |
343 | int res; | |
344 | ||
345 | res = wait_event_interruptible_timeout(session->report_queue, | |
346 | !test_bit(HIDP_WAITING_FOR_RETURN, &session->flags), | |
347 | 5*HZ); | |
348 | if (res == 0) { | |
349 | /* timeout */ | |
794d1756 DH |
350 | ret = -EIO; |
351 | goto err; | |
0ff1731a AO |
352 | } |
353 | if (res < 0) { | |
354 | /* signal */ | |
794d1756 DH |
355 | ret = -ERESTARTSYS; |
356 | goto err; | |
0ff1731a AO |
357 | } |
358 | } | |
359 | ||
360 | skb = session->report_return; | |
361 | if (skb) { | |
362 | len = skb->len < count ? skb->len : count; | |
363 | memcpy(data, skb->data, len); | |
364 | ||
365 | kfree_skb(skb); | |
366 | session->report_return = NULL; | |
367 | } else { | |
368 | /* Device returned a HANDSHAKE, indicating protocol error. */ | |
369 | len = -EIO; | |
370 | } | |
371 | ||
372 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
373 | mutex_unlock(&session->report_mutex); | |
374 | ||
375 | return len; | |
376 | ||
794d1756 | 377 | err: |
0ff1731a AO |
378 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); |
379 | mutex_unlock(&session->report_mutex); | |
794d1756 | 380 | return ret; |
0ff1731a AO |
381 | } |
382 | ||
d4bfa033 JK |
383 | static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, size_t count, |
384 | unsigned char report_type) | |
2da31939 | 385 | { |
0825411a AO |
386 | struct hidp_session *session = hid->driver_data; |
387 | int ret; | |
388 | ||
d4bfa033 JK |
389 | switch (report_type) { |
390 | case HID_FEATURE_REPORT: | |
391 | report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE; | |
392 | break; | |
393 | case HID_OUTPUT_REPORT: | |
97e1efbb | 394 | report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_OUPUT; |
d4bfa033 JK |
395 | break; |
396 | default: | |
397 | return -EINVAL; | |
398 | } | |
399 | ||
0825411a AO |
400 | if (mutex_lock_interruptible(&session->report_mutex)) |
401 | return -ERESTARTSYS; | |
402 | ||
403 | /* Set up our wait, and send the report request to the device. */ | |
404 | set_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); | |
794d1756 DH |
405 | ret = hidp_send_ctrl_message(hid->driver_data, report_type, data, |
406 | count); | |
407 | if (ret) | |
0825411a | 408 | goto err; |
0825411a AO |
409 | |
410 | /* Wait for the ACK from the device. */ | |
411 | while (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) { | |
412 | int res; | |
413 | ||
414 | res = wait_event_interruptible_timeout(session->report_queue, | |
415 | !test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags), | |
416 | 10*HZ); | |
417 | if (res == 0) { | |
418 | /* timeout */ | |
419 | ret = -EIO; | |
420 | goto err; | |
421 | } | |
422 | if (res < 0) { | |
423 | /* signal */ | |
424 | ret = -ERESTARTSYS; | |
425 | goto err; | |
426 | } | |
427 | } | |
428 | ||
429 | if (!session->output_report_success) { | |
430 | ret = -EIO; | |
431 | goto err; | |
432 | } | |
433 | ||
434 | ret = count; | |
435 | ||
436 | err: | |
437 | clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); | |
438 | mutex_unlock(&session->report_mutex); | |
439 | return ret; | |
2da31939 JK |
440 | } |
441 | ||
1da177e4 LT |
442 | static void hidp_idle_timeout(unsigned long arg) |
443 | { | |
444 | struct hidp_session *session = (struct hidp_session *) arg; | |
445 | ||
7bb59df8 PH |
446 | atomic_inc(&session->terminate); |
447 | wake_up_process(session->task); | |
1da177e4 LT |
448 | } |
449 | ||
91f5cca3 | 450 | static void hidp_set_timer(struct hidp_session *session) |
1da177e4 LT |
451 | { |
452 | if (session->idle_to > 0) | |
453 | mod_timer(&session->timer, jiffies + HZ * session->idle_to); | |
454 | } | |
455 | ||
6039aa73 | 456 | static void hidp_del_timer(struct hidp_session *session) |
1da177e4 LT |
457 | { |
458 | if (session->idle_to > 0) | |
459 | del_timer(&session->timer); | |
460 | } | |
461 | ||
91f5cca3 AM |
462 | static void hidp_process_handshake(struct hidp_session *session, |
463 | unsigned char param) | |
1da177e4 LT |
464 | { |
465 | BT_DBG("session %p param 0x%02x", session, param); | |
0825411a | 466 | session->output_report_success = 0; /* default condition */ |
1da177e4 LT |
467 | |
468 | switch (param) { | |
469 | case HIDP_HSHK_SUCCESSFUL: | |
470 | /* FIXME: Call into SET_ GET_ handlers here */ | |
0825411a | 471 | session->output_report_success = 1; |
1da177e4 LT |
472 | break; |
473 | ||
474 | case HIDP_HSHK_NOT_READY: | |
475 | case HIDP_HSHK_ERR_INVALID_REPORT_ID: | |
476 | case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST: | |
477 | case HIDP_HSHK_ERR_INVALID_PARAMETER: | |
ab88f714 | 478 | if (test_and_clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) |
0ff1731a | 479 | wake_up_interruptible(&session->report_queue); |
ab88f714 | 480 | |
1da177e4 LT |
481 | /* FIXME: Call into SET_ GET_ handlers here */ |
482 | break; | |
483 | ||
484 | case HIDP_HSHK_ERR_UNKNOWN: | |
485 | break; | |
486 | ||
487 | case HIDP_HSHK_ERR_FATAL: | |
488 | /* Device requests a reboot, as this is the only way this error | |
8e87d142 | 489 | * can be recovered. */ |
1da177e4 LT |
490 | __hidp_send_ctrl_message(session, |
491 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0); | |
492 | break; | |
493 | ||
494 | default: | |
495 | __hidp_send_ctrl_message(session, | |
496 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
497 | break; | |
498 | } | |
0825411a AO |
499 | |
500 | /* Wake up the waiting thread. */ | |
ab88f714 | 501 | if (test_and_clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) |
0825411a | 502 | wake_up_interruptible(&session->report_queue); |
1da177e4 LT |
503 | } |
504 | ||
91f5cca3 AM |
505 | static void hidp_process_hid_control(struct hidp_session *session, |
506 | unsigned char param) | |
1da177e4 LT |
507 | { |
508 | BT_DBG("session %p param 0x%02x", session, param); | |
509 | ||
eff001e3 | 510 | if (param == HIDP_CTRL_VIRTUAL_CABLE_UNPLUG) { |
1da177e4 LT |
511 | /* Flush the transmit queues */ |
512 | skb_queue_purge(&session->ctrl_transmit); | |
513 | skb_queue_purge(&session->intr_transmit); | |
514 | ||
7bb59df8 PH |
515 | atomic_inc(&session->terminate); |
516 | wake_up_process(current); | |
1da177e4 LT |
517 | } |
518 | } | |
519 | ||
0ff1731a AO |
520 | /* Returns true if the passed-in skb should be freed by the caller. */ |
521 | static int hidp_process_data(struct hidp_session *session, struct sk_buff *skb, | |
91f5cca3 | 522 | unsigned char param) |
1da177e4 | 523 | { |
0ff1731a | 524 | int done_with_skb = 1; |
1da177e4 LT |
525 | BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param); |
526 | ||
527 | switch (param) { | |
528 | case HIDP_DATA_RTYPE_INPUT: | |
529 | hidp_set_timer(session); | |
530 | ||
531 | if (session->input) | |
532 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
533 | |
534 | if (session->hid) | |
535 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0); | |
1da177e4 LT |
536 | break; |
537 | ||
538 | case HIDP_DATA_RTYPE_OTHER: | |
539 | case HIDP_DATA_RTYPE_OUPUT: | |
540 | case HIDP_DATA_RTYPE_FEATURE: | |
541 | break; | |
542 | ||
543 | default: | |
544 | __hidp_send_ctrl_message(session, | |
545 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
546 | } | |
0ff1731a AO |
547 | |
548 | if (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags) && | |
549 | param == session->waiting_report_type) { | |
550 | if (session->waiting_report_number < 0 || | |
551 | session->waiting_report_number == skb->data[0]) { | |
552 | /* hidp_get_raw_report() is waiting on this report. */ | |
553 | session->report_return = skb; | |
554 | done_with_skb = 0; | |
555 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
556 | wake_up_interruptible(&session->report_queue); | |
557 | } | |
558 | } | |
559 | ||
560 | return done_with_skb; | |
1da177e4 LT |
561 | } |
562 | ||
91f5cca3 AM |
563 | static void hidp_recv_ctrl_frame(struct hidp_session *session, |
564 | struct sk_buff *skb) | |
1da177e4 LT |
565 | { |
566 | unsigned char hdr, type, param; | |
0ff1731a | 567 | int free_skb = 1; |
1da177e4 LT |
568 | |
569 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
570 | ||
571 | hdr = skb->data[0]; | |
572 | skb_pull(skb, 1); | |
573 | ||
574 | type = hdr & HIDP_HEADER_TRANS_MASK; | |
575 | param = hdr & HIDP_HEADER_PARAM_MASK; | |
576 | ||
577 | switch (type) { | |
578 | case HIDP_TRANS_HANDSHAKE: | |
579 | hidp_process_handshake(session, param); | |
580 | break; | |
581 | ||
582 | case HIDP_TRANS_HID_CONTROL: | |
583 | hidp_process_hid_control(session, param); | |
584 | break; | |
585 | ||
586 | case HIDP_TRANS_DATA: | |
0ff1731a | 587 | free_skb = hidp_process_data(session, skb, param); |
1da177e4 LT |
588 | break; |
589 | ||
590 | default: | |
591 | __hidp_send_ctrl_message(session, | |
592 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0); | |
593 | break; | |
594 | } | |
595 | ||
0ff1731a AO |
596 | if (free_skb) |
597 | kfree_skb(skb); | |
1da177e4 LT |
598 | } |
599 | ||
91f5cca3 AM |
600 | static void hidp_recv_intr_frame(struct hidp_session *session, |
601 | struct sk_buff *skb) | |
1da177e4 LT |
602 | { |
603 | unsigned char hdr; | |
604 | ||
605 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
606 | ||
607 | hdr = skb->data[0]; | |
608 | skb_pull(skb, 1); | |
609 | ||
610 | if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) { | |
611 | hidp_set_timer(session); | |
e1aaadd4 | 612 | |
1da177e4 LT |
613 | if (session->input) |
614 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
615 | |
616 | if (session->hid) { | |
617 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1); | |
618 | BT_DBG("report len %d", skb->len); | |
619 | } | |
1da177e4 LT |
620 | } else { |
621 | BT_DBG("Unsupported protocol header 0x%02x", hdr); | |
622 | } | |
623 | ||
624 | kfree_skb(skb); | |
625 | } | |
626 | ||
627 | static int hidp_send_frame(struct socket *sock, unsigned char *data, int len) | |
628 | { | |
629 | struct kvec iv = { data, len }; | |
630 | struct msghdr msg; | |
631 | ||
632 | BT_DBG("sock %p data %p len %d", sock, data, len); | |
633 | ||
634 | if (!len) | |
635 | return 0; | |
636 | ||
637 | memset(&msg, 0, sizeof(msg)); | |
638 | ||
639 | return kernel_sendmsg(sock, &msg, &iv, 1, len); | |
640 | } | |
641 | ||
679344e4 | 642 | static void hidp_process_intr_transmit(struct hidp_session *session) |
1da177e4 LT |
643 | { |
644 | struct sk_buff *skb; | |
645 | ||
646 | BT_DBG("session %p", session); | |
647 | ||
679344e4 GP |
648 | while ((skb = skb_dequeue(&session->intr_transmit))) { |
649 | if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) { | |
650 | skb_queue_head(&session->intr_transmit, skb); | |
1da177e4 LT |
651 | break; |
652 | } | |
653 | ||
654 | hidp_set_timer(session); | |
655 | kfree_skb(skb); | |
656 | } | |
679344e4 | 657 | } |
1da177e4 | 658 | |
679344e4 GP |
659 | static void hidp_process_ctrl_transmit(struct hidp_session *session) |
660 | { | |
661 | struct sk_buff *skb; | |
662 | ||
663 | BT_DBG("session %p", session); | |
664 | ||
665 | while ((skb = skb_dequeue(&session->ctrl_transmit))) { | |
666 | if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) { | |
667 | skb_queue_head(&session->ctrl_transmit, skb); | |
1da177e4 LT |
668 | break; |
669 | } | |
670 | ||
671 | hidp_set_timer(session); | |
672 | kfree_skb(skb); | |
673 | } | |
1da177e4 LT |
674 | } |
675 | ||
676 | static int hidp_session(void *arg) | |
677 | { | |
678 | struct hidp_session *session = arg; | |
679 | struct sock *ctrl_sk = session->ctrl_sock->sk; | |
680 | struct sock *intr_sk = session->intr_sock->sk; | |
681 | struct sk_buff *skb; | |
1da177e4 LT |
682 | wait_queue_t ctrl_wait, intr_wait; |
683 | ||
684 | BT_DBG("session %p", session); | |
685 | ||
25df0845 | 686 | __module_get(THIS_MODULE); |
1da177e4 | 687 | set_user_nice(current, -15); |
1da177e4 LT |
688 | |
689 | init_waitqueue_entry(&ctrl_wait, current); | |
690 | init_waitqueue_entry(&intr_wait, current); | |
aa395145 ED |
691 | add_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); |
692 | add_wait_queue(sk_sleep(intr_sk), &intr_wait); | |
0f69dca2 AO |
693 | session->waiting_for_startup = 0; |
694 | wake_up_interruptible(&session->startup_queue); | |
7bb59df8 PH |
695 | set_current_state(TASK_INTERRUPTIBLE); |
696 | while (!atomic_read(&session->terminate)) { | |
17f09a7e SJ |
697 | if (ctrl_sk->sk_state != BT_CONNECTED || |
698 | intr_sk->sk_state != BT_CONNECTED) | |
1da177e4 LT |
699 | break; |
700 | ||
dc0da5cd | 701 | while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) { |
1da177e4 | 702 | skb_orphan(skb); |
44935720 | 703 | if (!skb_linearize(skb)) |
dc0da5cd | 704 | hidp_recv_intr_frame(session, skb); |
44935720 MM |
705 | else |
706 | kfree_skb(skb); | |
1da177e4 LT |
707 | } |
708 | ||
679344e4 GP |
709 | hidp_process_intr_transmit(session); |
710 | ||
dc0da5cd | 711 | while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) { |
1da177e4 | 712 | skb_orphan(skb); |
44935720 | 713 | if (!skb_linearize(skb)) |
dc0da5cd | 714 | hidp_recv_ctrl_frame(session, skb); |
44935720 MM |
715 | else |
716 | kfree_skb(skb); | |
1da177e4 LT |
717 | } |
718 | ||
679344e4 | 719 | hidp_process_ctrl_transmit(session); |
1da177e4 LT |
720 | |
721 | schedule(); | |
7bb59df8 | 722 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 LT |
723 | } |
724 | set_current_state(TASK_RUNNING); | |
aa395145 ED |
725 | remove_wait_queue(sk_sleep(intr_sk), &intr_wait); |
726 | remove_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); | |
1da177e4 | 727 | |
794d1756 DH |
728 | clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); |
729 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
730 | wake_up_interruptible(&session->report_queue); | |
731 | ||
1da177e4 LT |
732 | down_write(&hidp_session_sem); |
733 | ||
734 | hidp_del_timer(session); | |
735 | ||
1da177e4 LT |
736 | if (session->input) { |
737 | input_unregister_device(session->input); | |
34abf91f | 738 | session->input = NULL; |
1da177e4 LT |
739 | } |
740 | ||
e1aaadd4 | 741 | if (session->hid) { |
85cdaf52 | 742 | hid_destroy_device(session->hid); |
edad6388 | 743 | session->hid = NULL; |
e1aaadd4 MH |
744 | } |
745 | ||
ec8dab36 MH |
746 | /* Wakeup user-space polling for socket errors */ |
747 | session->intr_sock->sk->sk_err = EUNATCH; | |
748 | session->ctrl_sock->sk->sk_err = EUNATCH; | |
749 | ||
750 | hidp_schedule(session); | |
751 | ||
1c39858b DW |
752 | fput(session->intr_sock->file); |
753 | ||
aa395145 | 754 | wait_event_timeout(*(sk_sleep(ctrl_sk)), |
1c39858b DW |
755 | (ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500)); |
756 | ||
757 | fput(session->ctrl_sock->file); | |
758 | ||
759 | __hidp_unlink_session(session); | |
760 | ||
1da177e4 LT |
761 | up_write(&hidp_session_sem); |
762 | ||
1c97e94c | 763 | kfree(session->rd_data); |
1da177e4 | 764 | kfree(session); |
25df0845 | 765 | module_put_and_exit(0); |
1da177e4 LT |
766 | return 0; |
767 | } | |
768 | ||
3e90dc86 | 769 | static struct hci_conn *hidp_get_connection(struct hidp_session *session) |
0a85b964 MH |
770 | { |
771 | bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src; | |
772 | bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst; | |
1785dbf9 | 773 | struct hci_conn *conn; |
0a85b964 | 774 | struct hci_dev *hdev; |
0a85b964 MH |
775 | |
776 | hdev = hci_get_route(dst, src); | |
777 | if (!hdev) | |
778 | return NULL; | |
779 | ||
09fd0de5 | 780 | hci_dev_lock(hdev); |
1785dbf9 PH |
781 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
782 | if (conn) | |
783 | hci_conn_hold_device(conn); | |
09fd0de5 | 784 | hci_dev_unlock(hdev); |
0a85b964 MH |
785 | |
786 | hci_dev_put(hdev); | |
787 | ||
1785dbf9 | 788 | return conn; |
0a85b964 MH |
789 | } |
790 | ||
91f5cca3 AM |
791 | static int hidp_setup_input(struct hidp_session *session, |
792 | struct hidp_connadd_req *req) | |
1da177e4 | 793 | { |
c500c971 | 794 | struct input_dev *input; |
3415a5fd | 795 | int i; |
1da177e4 | 796 | |
c500c971 JS |
797 | input = input_allocate_device(); |
798 | if (!input) | |
799 | return -ENOMEM; | |
800 | ||
801 | session->input = input; | |
802 | ||
5be39466 | 803 | input_set_drvdata(input, session); |
1da177e4 | 804 | |
34abf91f DT |
805 | input->name = "Bluetooth HID Boot Protocol Device"; |
806 | ||
1da177e4 LT |
807 | input->id.bustype = BUS_BLUETOOTH; |
808 | input->id.vendor = req->vendor; | |
809 | input->id.product = req->product; | |
810 | input->id.version = req->version; | |
811 | ||
812 | if (req->subclass & 0x40) { | |
813 | set_bit(EV_KEY, input->evbit); | |
814 | set_bit(EV_LED, input->evbit); | |
815 | set_bit(EV_REP, input->evbit); | |
816 | ||
817 | set_bit(LED_NUML, input->ledbit); | |
818 | set_bit(LED_CAPSL, input->ledbit); | |
819 | set_bit(LED_SCROLLL, input->ledbit); | |
820 | set_bit(LED_COMPOSE, input->ledbit); | |
821 | set_bit(LED_KANA, input->ledbit); | |
822 | ||
823 | for (i = 0; i < sizeof(hidp_keycode); i++) | |
824 | set_bit(hidp_keycode[i], input->keybit); | |
825 | clear_bit(0, input->keybit); | |
826 | } | |
827 | ||
828 | if (req->subclass & 0x80) { | |
7b19ada2 JS |
829 | input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
830 | input->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | | |
831 | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); | |
832 | input->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); | |
833 | input->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) | | |
834 | BIT_MASK(BTN_EXTRA); | |
835 | input->relbit[0] |= BIT_MASK(REL_WHEEL); | |
1da177e4 LT |
836 | } |
837 | ||
1785dbf9 | 838 | input->dev.parent = &session->conn->dev; |
0a85b964 | 839 | |
1da177e4 LT |
840 | input->event = hidp_input_event; |
841 | ||
edad6388 | 842 | return 0; |
1da177e4 LT |
843 | } |
844 | ||
f5ffd462 MH |
845 | static int hidp_open(struct hid_device *hid) |
846 | { | |
847 | return 0; | |
848 | } | |
849 | ||
850 | static void hidp_close(struct hid_device *hid) | |
851 | { | |
852 | } | |
853 | ||
c500c971 JS |
854 | static int hidp_parse(struct hid_device *hid) |
855 | { | |
856 | struct hidp_session *session = hid->driver_data; | |
c500c971 | 857 | |
15c697ce MP |
858 | return hid_parse_report(session->hid, session->rd_data, |
859 | session->rd_size); | |
c500c971 JS |
860 | } |
861 | ||
862 | static int hidp_start(struct hid_device *hid) | |
863 | { | |
864 | struct hidp_session *session = hid->driver_data; | |
865 | struct hid_report *report; | |
866 | ||
142c69c6 DH |
867 | if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS) |
868 | return 0; | |
869 | ||
c500c971 JS |
870 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT]. |
871 | report_list, list) | |
872 | hidp_send_report(session, report); | |
873 | ||
874 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT]. | |
875 | report_list, list) | |
876 | hidp_send_report(session, report); | |
877 | ||
c500c971 JS |
878 | return 0; |
879 | } | |
880 | ||
881 | static void hidp_stop(struct hid_device *hid) | |
882 | { | |
883 | struct hidp_session *session = hid->driver_data; | |
884 | ||
885 | skb_queue_purge(&session->ctrl_transmit); | |
886 | skb_queue_purge(&session->intr_transmit); | |
887 | ||
c500c971 JS |
888 | hid->claimed = 0; |
889 | } | |
890 | ||
891 | static struct hid_ll_driver hidp_hid_driver = { | |
892 | .parse = hidp_parse, | |
893 | .start = hidp_start, | |
894 | .stop = hidp_stop, | |
895 | .open = hidp_open, | |
896 | .close = hidp_close, | |
897 | .hidinput_input_event = hidp_hidinput_event, | |
898 | }; | |
899 | ||
0f69dca2 AO |
900 | /* This function sets up the hid device. It does not add it |
901 | to the HID system. That is done in hidp_add_connection(). */ | |
85cdaf52 | 902 | static int hidp_setup_hid(struct hidp_session *session, |
91f5cca3 | 903 | struct hidp_connadd_req *req) |
e1aaadd4 | 904 | { |
c500c971 | 905 | struct hid_device *hid; |
edad6388 | 906 | int err; |
e1aaadd4 | 907 | |
15c697ce MP |
908 | session->rd_data = kzalloc(req->rd_size, GFP_KERNEL); |
909 | if (!session->rd_data) | |
910 | return -ENOMEM; | |
911 | ||
912 | if (copy_from_user(session->rd_data, req->rd_data, req->rd_size)) { | |
913 | err = -EFAULT; | |
914 | goto fault; | |
915 | } | |
916 | session->rd_size = req->rd_size; | |
917 | ||
c500c971 | 918 | hid = hid_allocate_device(); |
15c697ce MP |
919 | if (IS_ERR(hid)) { |
920 | err = PTR_ERR(hid); | |
921 | goto fault; | |
922 | } | |
e1aaadd4 | 923 | |
c500c971 | 924 | session->hid = hid; |
15c697ce | 925 | |
e1aaadd4 MH |
926 | hid->driver_data = session; |
927 | ||
e1aaadd4 MH |
928 | hid->bus = BUS_BLUETOOTH; |
929 | hid->vendor = req->vendor; | |
930 | hid->product = req->product; | |
931 | hid->version = req->version; | |
c500c971 | 932 | hid->country = req->country; |
e1aaadd4 MH |
933 | |
934 | strncpy(hid->name, req->name, 128); | |
fcb73338 AE |
935 | |
936 | snprintf(hid->phys, sizeof(hid->phys), "%pMR", | |
937 | &bt_sk(session->ctrl_sock->sk)->src); | |
938 | ||
939 | snprintf(hid->uniq, sizeof(hid->uniq), "%pMR", | |
940 | &bt_sk(session->ctrl_sock->sk)->dst); | |
e1aaadd4 | 941 | |
1785dbf9 | 942 | hid->dev.parent = &session->conn->dev; |
c500c971 | 943 | hid->ll_driver = &hidp_hid_driver; |
85cdaf52 | 944 | |
0ff1731a | 945 | hid->hid_get_raw_report = hidp_get_raw_report; |
2da31939 JK |
946 | hid->hid_output_raw_report = hidp_output_raw_report; |
947 | ||
4529eefa LS |
948 | /* True if device is blacklisted in drivers/hid/hid-core.c */ |
949 | if (hid_ignore(hid)) { | |
950 | hid_destroy_device(session->hid); | |
951 | session->hid = NULL; | |
952 | return -ENODEV; | |
953 | } | |
954 | ||
c500c971 | 955 | return 0; |
edad6388 | 956 | |
15c697ce MP |
957 | fault: |
958 | kfree(session->rd_data); | |
959 | session->rd_data = NULL; | |
960 | ||
edad6388 | 961 | return err; |
e1aaadd4 MH |
962 | } |
963 | ||
1da177e4 LT |
964 | int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) |
965 | { | |
966 | struct hidp_session *session, *s; | |
aabf6f89 | 967 | int vendor, product; |
1da177e4 LT |
968 | int err; |
969 | ||
970 | BT_DBG(""); | |
971 | ||
972 | if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) || | |
973 | bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst)) | |
974 | return -ENOTUNIQ; | |
975 | ||
e1aaadd4 MH |
976 | BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size); |
977 | ||
1da177e4 LT |
978 | down_write(&hidp_session_sem); |
979 | ||
980 | s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst); | |
981 | if (s && s->state == BT_CONNECTED) { | |
81b25cd0 GP |
982 | up_write(&hidp_session_sem); |
983 | return -EEXIST; | |
984 | } | |
985 | ||
986 | session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL); | |
987 | if (!session) { | |
988 | up_write(&hidp_session_sem); | |
989 | return -ENOMEM; | |
1da177e4 LT |
990 | } |
991 | ||
992 | bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst); | |
993 | ||
0c1bc5c6 GP |
994 | session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->chan->omtu, |
995 | l2cap_pi(ctrl_sock->sk)->chan->imtu); | |
996 | session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->chan->omtu, | |
997 | l2cap_pi(intr_sock->sk)->chan->imtu); | |
1da177e4 LT |
998 | |
999 | BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu); | |
1000 | ||
1001 | session->ctrl_sock = ctrl_sock; | |
1002 | session->intr_sock = intr_sock; | |
1003 | session->state = BT_CONNECTED; | |
1004 | ||
3c32fa93 GP |
1005 | session->conn = hidp_get_connection(session); |
1006 | if (!session->conn) { | |
1007 | err = -ENOTCONN; | |
1008 | goto failed; | |
1009 | } | |
1010 | ||
b24b8a24 | 1011 | setup_timer(&session->timer, hidp_idle_timeout, (unsigned long)session); |
1da177e4 LT |
1012 | |
1013 | skb_queue_head_init(&session->ctrl_transmit); | |
1014 | skb_queue_head_init(&session->intr_transmit); | |
1015 | ||
0ff1731a AO |
1016 | mutex_init(&session->report_mutex); |
1017 | init_waitqueue_head(&session->report_queue); | |
0f69dca2 AO |
1018 | init_waitqueue_head(&session->startup_queue); |
1019 | session->waiting_for_startup = 1; | |
1da177e4 LT |
1020 | session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); |
1021 | session->idle_to = req->idle_to; | |
1022 | ||
1785dbf9 PH |
1023 | __hidp_link_session(session); |
1024 | ||
c500c971 | 1025 | if (req->rd_size > 0) { |
85cdaf52 | 1026 | err = hidp_setup_hid(session, req); |
4529eefa | 1027 | if (err && err != -ENODEV) |
edad6388 | 1028 | goto purge; |
c500c971 JS |
1029 | } |
1030 | ||
1031 | if (!session->hid) { | |
1032 | err = hidp_setup_input(session, req); | |
1033 | if (err < 0) | |
edad6388 | 1034 | goto purge; |
85cdaf52 | 1035 | } |
e1aaadd4 | 1036 | |
1da177e4 LT |
1037 | hidp_set_timer(session); |
1038 | ||
aabf6f89 SJ |
1039 | if (session->hid) { |
1040 | vendor = session->hid->vendor; | |
1041 | product = session->hid->product; | |
1042 | } else if (session->input) { | |
1043 | vendor = session->input->id.vendor; | |
1044 | product = session->input->id.product; | |
1045 | } else { | |
1046 | vendor = 0x0000; | |
1047 | product = 0x0000; | |
1048 | } | |
1049 | ||
1050 | session->task = kthread_run(hidp_session, session, "khidpd_%04x%04x", | |
1051 | vendor, product); | |
1052 | if (IS_ERR(session->task)) { | |
1053 | err = PTR_ERR(session->task); | |
1da177e4 | 1054 | goto unlink; |
aabf6f89 SJ |
1055 | } |
1056 | ||
0f69dca2 AO |
1057 | while (session->waiting_for_startup) { |
1058 | wait_event_interruptible(session->startup_queue, | |
1059 | !session->waiting_for_startup); | |
1060 | } | |
1061 | ||
3415a5fd GP |
1062 | if (session->hid) |
1063 | err = hid_add_device(session->hid); | |
1064 | else | |
1065 | err = input_register_device(session->input); | |
1066 | ||
e9d5cb54 PH |
1067 | if (err < 0) { |
1068 | atomic_inc(&session->terminate); | |
1069 | wake_up_process(session->task); | |
1070 | up_write(&hidp_session_sem); | |
1071 | return err; | |
1072 | } | |
1da177e4 LT |
1073 | |
1074 | if (session->input) { | |
1075 | hidp_send_ctrl_message(session, | |
1076 | HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0); | |
1077 | session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE); | |
1078 | ||
1079 | session->leds = 0xff; | |
1080 | hidp_input_event(session->input, EV_LED, 0, 0); | |
1081 | } | |
1082 | ||
1083 | up_write(&hidp_session_sem); | |
1084 | return 0; | |
1085 | ||
1086 | unlink: | |
1087 | hidp_del_timer(session); | |
1088 | ||
edad6388 | 1089 | if (session->input) { |
1da177e4 | 1090 | input_unregister_device(session->input); |
edad6388 MH |
1091 | session->input = NULL; |
1092 | } | |
1093 | ||
1094 | if (session->hid) { | |
85cdaf52 | 1095 | hid_destroy_device(session->hid); |
edad6388 MH |
1096 | session->hid = NULL; |
1097 | } | |
1098 | ||
15c697ce MP |
1099 | kfree(session->rd_data); |
1100 | session->rd_data = NULL; | |
1101 | ||
edad6388 | 1102 | purge: |
1785dbf9 PH |
1103 | __hidp_unlink_session(session); |
1104 | ||
c500c971 JS |
1105 | skb_queue_purge(&session->ctrl_transmit); |
1106 | skb_queue_purge(&session->intr_transmit); | |
edad6388 | 1107 | |
c500c971 JS |
1108 | failed: |
1109 | up_write(&hidp_session_sem); | |
e1aaadd4 | 1110 | |
1da177e4 LT |
1111 | kfree(session); |
1112 | return err; | |
1113 | } | |
1114 | ||
1115 | int hidp_del_connection(struct hidp_conndel_req *req) | |
1116 | { | |
1117 | struct hidp_session *session; | |
1118 | int err = 0; | |
1119 | ||
1120 | BT_DBG(""); | |
1121 | ||
1122 | down_read(&hidp_session_sem); | |
1123 | ||
1124 | session = __hidp_get_session(&req->bdaddr); | |
1125 | if (session) { | |
1126 | if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) { | |
1127 | hidp_send_ctrl_message(session, | |
1128 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0); | |
1129 | } else { | |
1130 | /* Flush the transmit queues */ | |
1131 | skb_queue_purge(&session->ctrl_transmit); | |
1132 | skb_queue_purge(&session->intr_transmit); | |
1133 | ||
7bb59df8 PH |
1134 | atomic_inc(&session->terminate); |
1135 | wake_up_process(session->task); | |
1da177e4 LT |
1136 | } |
1137 | } else | |
1138 | err = -ENOENT; | |
1139 | ||
1140 | up_read(&hidp_session_sem); | |
1141 | return err; | |
1142 | } | |
1143 | ||
1144 | int hidp_get_connlist(struct hidp_connlist_req *req) | |
1145 | { | |
cd11cdd2 | 1146 | struct hidp_session *session; |
1da177e4 LT |
1147 | int err = 0, n = 0; |
1148 | ||
1149 | BT_DBG(""); | |
1150 | ||
1151 | down_read(&hidp_session_sem); | |
1152 | ||
cd11cdd2 | 1153 | list_for_each_entry(session, &hidp_session_list, list) { |
1da177e4 LT |
1154 | struct hidp_conninfo ci; |
1155 | ||
1da177e4 LT |
1156 | __hidp_copy_session(session, &ci); |
1157 | ||
1158 | if (copy_to_user(req->ci, &ci, sizeof(ci))) { | |
1159 | err = -EFAULT; | |
1160 | break; | |
1161 | } | |
1162 | ||
1163 | if (++n >= req->cnum) | |
1164 | break; | |
1165 | ||
1166 | req->ci++; | |
1167 | } | |
1168 | req->cnum = n; | |
1169 | ||
1170 | up_read(&hidp_session_sem); | |
1171 | return err; | |
1172 | } | |
1173 | ||
1174 | int hidp_get_conninfo(struct hidp_conninfo *ci) | |
1175 | { | |
1176 | struct hidp_session *session; | |
1177 | int err = 0; | |
1178 | ||
1179 | down_read(&hidp_session_sem); | |
1180 | ||
1181 | session = __hidp_get_session(&ci->bdaddr); | |
1182 | if (session) | |
1183 | __hidp_copy_session(session, ci); | |
1184 | else | |
1185 | err = -ENOENT; | |
1186 | ||
1187 | up_read(&hidp_session_sem); | |
1188 | return err; | |
1189 | } | |
1190 | ||
1191 | static int __init hidp_init(void) | |
1192 | { | |
1da177e4 LT |
1193 | BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION); |
1194 | ||
8215d557 | 1195 | return hidp_init_sockets(); |
1da177e4 LT |
1196 | } |
1197 | ||
1198 | static void __exit hidp_exit(void) | |
1199 | { | |
1200 | hidp_cleanup_sockets(); | |
1201 | } | |
1202 | ||
1203 | module_init(hidp_init); | |
1204 | module_exit(hidp_exit); | |
1205 | ||
1206 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
1207 | MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION); | |
1208 | MODULE_VERSION(VERSION); | |
1209 | MODULE_LICENSE("GPL"); | |
1210 | MODULE_ALIAS("bt-proto-6"); |