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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 LT |
23 | #include <linux/module.h> |
24 | ||
25 | #include <linux/types.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/kernel.h> | |
1da177e4 LT |
28 | #include <linux/sched.h> |
29 | #include <linux/slab.h> | |
30 | #include <linux/poll.h> | |
83144186 | 31 | #include <linux/freezer.h> |
1da177e4 LT |
32 | #include <linux/fcntl.h> |
33 | #include <linux/skbuff.h> | |
34 | #include <linux/socket.h> | |
35 | #include <linux/ioctl.h> | |
36 | #include <linux/file.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/wait.h> | |
0ff1731a | 39 | #include <linux/mutex.h> |
aabf6f89 | 40 | #include <linux/kthread.h> |
1da177e4 LT |
41 | #include <net/sock.h> |
42 | ||
43 | #include <linux/input.h> | |
e1aaadd4 | 44 | #include <linux/hid.h> |
364f6351 | 45 | #include <linux/hidraw.h> |
1da177e4 LT |
46 | |
47 | #include <net/bluetooth/bluetooth.h> | |
0a85b964 | 48 | #include <net/bluetooth/hci_core.h> |
1da177e4 LT |
49 | #include <net/bluetooth/l2cap.h> |
50 | ||
51 | #include "hidp.h" | |
52 | ||
e1aaadd4 | 53 | #define VERSION "1.2" |
1da177e4 LT |
54 | |
55 | static DECLARE_RWSEM(hidp_session_sem); | |
56 | static LIST_HEAD(hidp_session_list); | |
57 | ||
58 | static unsigned char hidp_keycode[256] = { | |
17f09a7e SJ |
59 | 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, |
60 | 37, 38, 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, | |
61 | 21, 44, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, | |
62 | 14, 15, 57, 12, 13, 26, 27, 43, 43, 39, 40, 41, 51, 52, | |
63 | 53, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 87, 88, | |
64 | 99, 70, 119, 110, 102, 104, 111, 107, 109, 106, 105, 108, 103, 69, | |
65 | 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 72, 73, | |
66 | 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, | |
68 | 136, 113, 115, 114, 0, 0, 0, 121, 0, 89, 93, 124, 92, 94, | |
69 | 95, 0, 0, 0, 122, 123, 90, 91, 85, 0, 0, 0, 0, 0, | |
70 | 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, | |
72 | 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, | |
74 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
75 | 29, 42, 56, 125, 97, 54, 100, 126, 164, 166, 165, 163, 161, 115, | |
76 | 114, 113, 150, 158, 159, 128, 136, 177, 178, 176, 142, 152, 173, 140 | |
1da177e4 LT |
77 | }; |
78 | ||
79 | static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }; | |
80 | ||
81 | static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr) | |
82 | { | |
83 | struct hidp_session *session; | |
84 | struct list_head *p; | |
85 | ||
86 | BT_DBG(""); | |
87 | ||
88 | list_for_each(p, &hidp_session_list) { | |
89 | session = list_entry(p, struct hidp_session, list); | |
90 | if (!bacmp(bdaddr, &session->bdaddr)) | |
91 | return session; | |
92 | } | |
93 | return NULL; | |
94 | } | |
95 | ||
96 | static void __hidp_link_session(struct hidp_session *session) | |
97 | { | |
98 | __module_get(THIS_MODULE); | |
99 | list_add(&session->list, &hidp_session_list); | |
edad6388 MH |
100 | |
101 | hci_conn_hold_device(session->conn); | |
1da177e4 LT |
102 | } |
103 | ||
104 | static void __hidp_unlink_session(struct hidp_session *session) | |
105 | { | |
edad6388 MH |
106 | hci_conn_put_device(session->conn); |
107 | ||
1da177e4 LT |
108 | list_del(&session->list); |
109 | module_put(THIS_MODULE); | |
110 | } | |
111 | ||
112 | static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci) | |
113 | { | |
d31dbf6e | 114 | memset(ci, 0, sizeof(*ci)); |
1da177e4 LT |
115 | bacpy(&ci->bdaddr, &session->bdaddr); |
116 | ||
117 | ci->flags = session->flags; | |
118 | ci->state = session->state; | |
119 | ||
120 | ci->vendor = 0x0000; | |
121 | ci->product = 0x0000; | |
122 | ci->version = 0x0000; | |
1da177e4 LT |
123 | |
124 | if (session->input) { | |
125 | ci->vendor = session->input->id.vendor; | |
126 | ci->product = session->input->id.product; | |
127 | ci->version = session->input->id.version; | |
128 | if (session->input->name) | |
129 | strncpy(ci->name, session->input->name, 128); | |
130 | else | |
131 | strncpy(ci->name, "HID Boot Device", 128); | |
132 | } | |
e1aaadd4 MH |
133 | |
134 | if (session->hid) { | |
135 | ci->vendor = session->hid->vendor; | |
136 | ci->product = session->hid->product; | |
137 | ci->version = session->hid->version; | |
138 | strncpy(ci->name, session->hid->name, 128); | |
139 | } | |
1da177e4 LT |
140 | } |
141 | ||
91f5cca3 AM |
142 | static int hidp_queue_event(struct hidp_session *session, struct input_dev *dev, |
143 | unsigned int type, unsigned int code, int value) | |
1da177e4 | 144 | { |
1da177e4 | 145 | unsigned char newleds; |
e1aaadd4 | 146 | struct sk_buff *skb; |
1da177e4 | 147 | |
e1aaadd4 | 148 | BT_DBG("session %p type %d code %d value %d", session, type, code, value); |
1da177e4 LT |
149 | |
150 | if (type != EV_LED) | |
151 | return -1; | |
152 | ||
153 | newleds = (!!test_bit(LED_KANA, dev->led) << 3) | | |
154 | (!!test_bit(LED_COMPOSE, dev->led) << 3) | | |
155 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | | |
156 | (!!test_bit(LED_CAPSL, dev->led) << 1) | | |
157 | (!!test_bit(LED_NUML, dev->led)); | |
158 | ||
159 | if (session->leds == newleds) | |
160 | return 0; | |
161 | ||
162 | session->leds = newleds; | |
163 | ||
5a08ecce AE |
164 | skb = alloc_skb(3, GFP_ATOMIC); |
165 | if (!skb) { | |
1da177e4 LT |
166 | BT_ERR("Can't allocate memory for new frame"); |
167 | return -ENOMEM; | |
168 | } | |
169 | ||
170 | *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; | |
171 | *skb_put(skb, 1) = 0x01; | |
172 | *skb_put(skb, 1) = newleds; | |
173 | ||
174 | skb_queue_tail(&session->intr_transmit, skb); | |
175 | ||
176 | hidp_schedule(session); | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
e1aaadd4 MH |
181 | static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
182 | { | |
5be39466 | 183 | struct hid_device *hid = input_get_drvdata(dev); |
e1aaadd4 MH |
184 | struct hidp_session *session = hid->driver_data; |
185 | ||
186 | return hidp_queue_event(session, dev, type, code, value); | |
187 | } | |
188 | ||
189 | static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) | |
190 | { | |
5be39466 | 191 | struct hidp_session *session = input_get_drvdata(dev); |
e1aaadd4 MH |
192 | |
193 | return hidp_queue_event(session, dev, type, code, value); | |
194 | } | |
195 | ||
1da177e4 LT |
196 | static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) |
197 | { | |
198 | struct input_dev *dev = session->input; | |
199 | unsigned char *keys = session->keys; | |
200 | unsigned char *udata = skb->data + 1; | |
201 | signed char *sdata = skb->data + 1; | |
202 | int i, size = skb->len - 1; | |
203 | ||
204 | switch (skb->data[0]) { | |
205 | case 0x01: /* Keyboard report */ | |
206 | for (i = 0; i < 8; i++) | |
207 | input_report_key(dev, hidp_keycode[i + 224], (udata[0] >> i) & 1); | |
208 | ||
209 | /* If all the key codes have been set to 0x01, it means | |
210 | * too many keys were pressed at the same time. */ | |
211 | if (!memcmp(udata + 2, hidp_mkeyspat, 6)) | |
212 | break; | |
213 | ||
214 | for (i = 2; i < 8; i++) { | |
215 | if (keys[i] > 3 && memscan(udata + 2, keys[i], 6) == udata + 8) { | |
216 | if (hidp_keycode[keys[i]]) | |
217 | input_report_key(dev, hidp_keycode[keys[i]], 0); | |
218 | else | |
219 | BT_ERR("Unknown key (scancode %#x) released.", keys[i]); | |
220 | } | |
221 | ||
222 | if (udata[i] > 3 && memscan(keys + 2, udata[i], 6) == keys + 8) { | |
223 | if (hidp_keycode[udata[i]]) | |
224 | input_report_key(dev, hidp_keycode[udata[i]], 1); | |
225 | else | |
226 | BT_ERR("Unknown key (scancode %#x) pressed.", udata[i]); | |
227 | } | |
228 | } | |
229 | ||
230 | memcpy(keys, udata, 8); | |
231 | break; | |
232 | ||
233 | case 0x02: /* Mouse report */ | |
234 | input_report_key(dev, BTN_LEFT, sdata[0] & 0x01); | |
235 | input_report_key(dev, BTN_RIGHT, sdata[0] & 0x02); | |
236 | input_report_key(dev, BTN_MIDDLE, sdata[0] & 0x04); | |
237 | input_report_key(dev, BTN_SIDE, sdata[0] & 0x08); | |
238 | input_report_key(dev, BTN_EXTRA, sdata[0] & 0x10); | |
239 | ||
240 | input_report_rel(dev, REL_X, sdata[1]); | |
241 | input_report_rel(dev, REL_Y, sdata[2]); | |
242 | ||
243 | if (size > 3) | |
244 | input_report_rel(dev, REL_WHEEL, sdata[3]); | |
245 | break; | |
246 | } | |
247 | ||
248 | input_sync(dev); | |
249 | } | |
250 | ||
6bf8268f BN |
251 | static int __hidp_send_ctrl_message(struct hidp_session *session, |
252 | unsigned char hdr, unsigned char *data, int size) | |
253 | { | |
254 | struct sk_buff *skb; | |
255 | ||
256 | BT_DBG("session %p data %p size %d", session, data, size); | |
257 | ||
5a08ecce AE |
258 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
259 | if (!skb) { | |
6bf8268f BN |
260 | BT_ERR("Can't allocate memory for new frame"); |
261 | return -ENOMEM; | |
262 | } | |
263 | ||
264 | *skb_put(skb, 1) = hdr; | |
265 | if (data && size > 0) | |
266 | memcpy(skb_put(skb, size), data, size); | |
267 | ||
268 | skb_queue_tail(&session->ctrl_transmit, skb); | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
273 | static inline int hidp_send_ctrl_message(struct hidp_session *session, | |
274 | unsigned char hdr, unsigned char *data, int size) | |
275 | { | |
276 | int err; | |
277 | ||
278 | err = __hidp_send_ctrl_message(session, hdr, data, size); | |
279 | ||
280 | hidp_schedule(session); | |
281 | ||
282 | return err; | |
283 | } | |
284 | ||
91f5cca3 AM |
285 | static int hidp_queue_report(struct hidp_session *session, |
286 | unsigned char *data, int size) | |
e1aaadd4 MH |
287 | { |
288 | struct sk_buff *skb; | |
289 | ||
6792b5ec | 290 | BT_DBG("session %p hid %p data %p size %d", session, session->hid, data, size); |
e1aaadd4 | 291 | |
5a08ecce AE |
292 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
293 | if (!skb) { | |
e1aaadd4 MH |
294 | BT_ERR("Can't allocate memory for new frame"); |
295 | return -ENOMEM; | |
296 | } | |
297 | ||
298 | *skb_put(skb, 1) = 0xa2; | |
299 | if (size > 0) | |
300 | memcpy(skb_put(skb, size), data, size); | |
301 | ||
302 | skb_queue_tail(&session->intr_transmit, skb); | |
303 | ||
304 | hidp_schedule(session); | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
309 | static int hidp_send_report(struct hidp_session *session, struct hid_report *report) | |
310 | { | |
311 | unsigned char buf[32]; | |
312 | int rsize; | |
313 | ||
314 | rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0); | |
315 | if (rsize > sizeof(buf)) | |
316 | return -EIO; | |
317 | ||
318 | hid_output_report(report, buf); | |
319 | ||
320 | return hidp_queue_report(session, buf, rsize); | |
321 | } | |
322 | ||
0ff1731a AO |
323 | static int hidp_get_raw_report(struct hid_device *hid, |
324 | unsigned char report_number, | |
325 | unsigned char *data, size_t count, | |
326 | unsigned char report_type) | |
327 | { | |
328 | struct hidp_session *session = hid->driver_data; | |
329 | struct sk_buff *skb; | |
330 | size_t len; | |
331 | int numbered_reports = hid->report_enum[report_type].numbered; | |
332 | ||
333 | switch (report_type) { | |
334 | case HID_FEATURE_REPORT: | |
335 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_FEATURE; | |
336 | break; | |
337 | case HID_INPUT_REPORT: | |
338 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_INPUT; | |
339 | break; | |
340 | case HID_OUTPUT_REPORT: | |
341 | report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_OUPUT; | |
342 | break; | |
343 | default: | |
344 | return -EINVAL; | |
345 | } | |
346 | ||
347 | if (mutex_lock_interruptible(&session->report_mutex)) | |
348 | return -ERESTARTSYS; | |
349 | ||
350 | /* Set up our wait, and send the report request to the device. */ | |
351 | session->waiting_report_type = report_type & HIDP_DATA_RTYPE_MASK; | |
352 | session->waiting_report_number = numbered_reports ? report_number : -1; | |
353 | set_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
354 | data[0] = report_number; | |
355 | if (hidp_send_ctrl_message(hid->driver_data, report_type, data, 1)) | |
356 | goto err_eio; | |
357 | ||
358 | /* Wait for the return of the report. The returned report | |
359 | gets put in session->report_return. */ | |
360 | while (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) { | |
361 | int res; | |
362 | ||
363 | res = wait_event_interruptible_timeout(session->report_queue, | |
364 | !test_bit(HIDP_WAITING_FOR_RETURN, &session->flags), | |
365 | 5*HZ); | |
366 | if (res == 0) { | |
367 | /* timeout */ | |
368 | goto err_eio; | |
369 | } | |
370 | if (res < 0) { | |
371 | /* signal */ | |
372 | goto err_restartsys; | |
373 | } | |
374 | } | |
375 | ||
376 | skb = session->report_return; | |
377 | if (skb) { | |
378 | len = skb->len < count ? skb->len : count; | |
379 | memcpy(data, skb->data, len); | |
380 | ||
381 | kfree_skb(skb); | |
382 | session->report_return = NULL; | |
383 | } else { | |
384 | /* Device returned a HANDSHAKE, indicating protocol error. */ | |
385 | len = -EIO; | |
386 | } | |
387 | ||
388 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
389 | mutex_unlock(&session->report_mutex); | |
390 | ||
391 | return len; | |
392 | ||
393 | err_restartsys: | |
394 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
395 | mutex_unlock(&session->report_mutex); | |
396 | return -ERESTARTSYS; | |
397 | err_eio: | |
398 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
399 | mutex_unlock(&session->report_mutex); | |
400 | return -EIO; | |
401 | } | |
402 | ||
d4bfa033 JK |
403 | static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, size_t count, |
404 | unsigned char report_type) | |
2da31939 | 405 | { |
0825411a AO |
406 | struct hidp_session *session = hid->driver_data; |
407 | int ret; | |
408 | ||
d4bfa033 JK |
409 | switch (report_type) { |
410 | case HID_FEATURE_REPORT: | |
411 | report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE; | |
412 | break; | |
413 | case HID_OUTPUT_REPORT: | |
97e1efbb | 414 | report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_OUPUT; |
d4bfa033 JK |
415 | break; |
416 | default: | |
417 | return -EINVAL; | |
418 | } | |
419 | ||
0825411a AO |
420 | if (mutex_lock_interruptible(&session->report_mutex)) |
421 | return -ERESTARTSYS; | |
422 | ||
423 | /* Set up our wait, and send the report request to the device. */ | |
424 | set_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); | |
d4bfa033 | 425 | if (hidp_send_ctrl_message(hid->driver_data, report_type, |
0825411a AO |
426 | data, count)) { |
427 | ret = -ENOMEM; | |
428 | goto err; | |
429 | } | |
430 | ||
431 | /* Wait for the ACK from the device. */ | |
432 | while (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) { | |
433 | int res; | |
434 | ||
435 | res = wait_event_interruptible_timeout(session->report_queue, | |
436 | !test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags), | |
437 | 10*HZ); | |
438 | if (res == 0) { | |
439 | /* timeout */ | |
440 | ret = -EIO; | |
441 | goto err; | |
442 | } | |
443 | if (res < 0) { | |
444 | /* signal */ | |
445 | ret = -ERESTARTSYS; | |
446 | goto err; | |
447 | } | |
448 | } | |
449 | ||
450 | if (!session->output_report_success) { | |
451 | ret = -EIO; | |
452 | goto err; | |
453 | } | |
454 | ||
455 | ret = count; | |
456 | ||
457 | err: | |
458 | clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); | |
459 | mutex_unlock(&session->report_mutex); | |
460 | return ret; | |
2da31939 JK |
461 | } |
462 | ||
1da177e4 LT |
463 | static void hidp_idle_timeout(unsigned long arg) |
464 | { | |
465 | struct hidp_session *session = (struct hidp_session *) arg; | |
466 | ||
7bb59df8 PH |
467 | atomic_inc(&session->terminate); |
468 | wake_up_process(session->task); | |
1da177e4 LT |
469 | } |
470 | ||
91f5cca3 | 471 | static void hidp_set_timer(struct hidp_session *session) |
1da177e4 LT |
472 | { |
473 | if (session->idle_to > 0) | |
474 | mod_timer(&session->timer, jiffies + HZ * session->idle_to); | |
475 | } | |
476 | ||
477 | static inline void hidp_del_timer(struct hidp_session *session) | |
478 | { | |
479 | if (session->idle_to > 0) | |
480 | del_timer(&session->timer); | |
481 | } | |
482 | ||
91f5cca3 AM |
483 | static void hidp_process_handshake(struct hidp_session *session, |
484 | unsigned char param) | |
1da177e4 LT |
485 | { |
486 | BT_DBG("session %p param 0x%02x", session, param); | |
0825411a | 487 | session->output_report_success = 0; /* default condition */ |
1da177e4 LT |
488 | |
489 | switch (param) { | |
490 | case HIDP_HSHK_SUCCESSFUL: | |
491 | /* FIXME: Call into SET_ GET_ handlers here */ | |
0825411a | 492 | session->output_report_success = 1; |
1da177e4 LT |
493 | break; |
494 | ||
495 | case HIDP_HSHK_NOT_READY: | |
496 | case HIDP_HSHK_ERR_INVALID_REPORT_ID: | |
497 | case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST: | |
498 | case HIDP_HSHK_ERR_INVALID_PARAMETER: | |
0ff1731a AO |
499 | if (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) { |
500 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
501 | wake_up_interruptible(&session->report_queue); | |
502 | } | |
1da177e4 LT |
503 | /* FIXME: Call into SET_ GET_ handlers here */ |
504 | break; | |
505 | ||
506 | case HIDP_HSHK_ERR_UNKNOWN: | |
507 | break; | |
508 | ||
509 | case HIDP_HSHK_ERR_FATAL: | |
510 | /* Device requests a reboot, as this is the only way this error | |
8e87d142 | 511 | * can be recovered. */ |
1da177e4 LT |
512 | __hidp_send_ctrl_message(session, |
513 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0); | |
514 | break; | |
515 | ||
516 | default: | |
517 | __hidp_send_ctrl_message(session, | |
518 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
519 | break; | |
520 | } | |
0825411a AO |
521 | |
522 | /* Wake up the waiting thread. */ | |
523 | if (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) { | |
524 | clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); | |
525 | wake_up_interruptible(&session->report_queue); | |
526 | } | |
1da177e4 LT |
527 | } |
528 | ||
91f5cca3 AM |
529 | static void hidp_process_hid_control(struct hidp_session *session, |
530 | unsigned char param) | |
1da177e4 LT |
531 | { |
532 | BT_DBG("session %p param 0x%02x", session, param); | |
533 | ||
eff001e3 | 534 | if (param == HIDP_CTRL_VIRTUAL_CABLE_UNPLUG) { |
1da177e4 LT |
535 | /* Flush the transmit queues */ |
536 | skb_queue_purge(&session->ctrl_transmit); | |
537 | skb_queue_purge(&session->intr_transmit); | |
538 | ||
7bb59df8 PH |
539 | atomic_inc(&session->terminate); |
540 | wake_up_process(current); | |
1da177e4 LT |
541 | } |
542 | } | |
543 | ||
0ff1731a AO |
544 | /* Returns true if the passed-in skb should be freed by the caller. */ |
545 | static int hidp_process_data(struct hidp_session *session, struct sk_buff *skb, | |
91f5cca3 | 546 | unsigned char param) |
1da177e4 | 547 | { |
0ff1731a | 548 | int done_with_skb = 1; |
1da177e4 LT |
549 | BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param); |
550 | ||
551 | switch (param) { | |
552 | case HIDP_DATA_RTYPE_INPUT: | |
553 | hidp_set_timer(session); | |
554 | ||
555 | if (session->input) | |
556 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
557 | |
558 | if (session->hid) | |
559 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0); | |
1da177e4 LT |
560 | break; |
561 | ||
562 | case HIDP_DATA_RTYPE_OTHER: | |
563 | case HIDP_DATA_RTYPE_OUPUT: | |
564 | case HIDP_DATA_RTYPE_FEATURE: | |
565 | break; | |
566 | ||
567 | default: | |
568 | __hidp_send_ctrl_message(session, | |
569 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); | |
570 | } | |
0ff1731a AO |
571 | |
572 | if (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags) && | |
573 | param == session->waiting_report_type) { | |
574 | if (session->waiting_report_number < 0 || | |
575 | session->waiting_report_number == skb->data[0]) { | |
576 | /* hidp_get_raw_report() is waiting on this report. */ | |
577 | session->report_return = skb; | |
578 | done_with_skb = 0; | |
579 | clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); | |
580 | wake_up_interruptible(&session->report_queue); | |
581 | } | |
582 | } | |
583 | ||
584 | return done_with_skb; | |
1da177e4 LT |
585 | } |
586 | ||
91f5cca3 AM |
587 | static void hidp_recv_ctrl_frame(struct hidp_session *session, |
588 | struct sk_buff *skb) | |
1da177e4 LT |
589 | { |
590 | unsigned char hdr, type, param; | |
0ff1731a | 591 | int free_skb = 1; |
1da177e4 LT |
592 | |
593 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
594 | ||
595 | hdr = skb->data[0]; | |
596 | skb_pull(skb, 1); | |
597 | ||
598 | type = hdr & HIDP_HEADER_TRANS_MASK; | |
599 | param = hdr & HIDP_HEADER_PARAM_MASK; | |
600 | ||
601 | switch (type) { | |
602 | case HIDP_TRANS_HANDSHAKE: | |
603 | hidp_process_handshake(session, param); | |
604 | break; | |
605 | ||
606 | case HIDP_TRANS_HID_CONTROL: | |
607 | hidp_process_hid_control(session, param); | |
608 | break; | |
609 | ||
610 | case HIDP_TRANS_DATA: | |
0ff1731a | 611 | free_skb = hidp_process_data(session, skb, param); |
1da177e4 LT |
612 | break; |
613 | ||
614 | default: | |
615 | __hidp_send_ctrl_message(session, | |
616 | HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0); | |
617 | break; | |
618 | } | |
619 | ||
0ff1731a AO |
620 | if (free_skb) |
621 | kfree_skb(skb); | |
1da177e4 LT |
622 | } |
623 | ||
91f5cca3 AM |
624 | static void hidp_recv_intr_frame(struct hidp_session *session, |
625 | struct sk_buff *skb) | |
1da177e4 LT |
626 | { |
627 | unsigned char hdr; | |
628 | ||
629 | BT_DBG("session %p skb %p len %d", session, skb, skb->len); | |
630 | ||
631 | hdr = skb->data[0]; | |
632 | skb_pull(skb, 1); | |
633 | ||
634 | if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) { | |
635 | hidp_set_timer(session); | |
e1aaadd4 | 636 | |
1da177e4 LT |
637 | if (session->input) |
638 | hidp_input_report(session, skb); | |
e1aaadd4 MH |
639 | |
640 | if (session->hid) { | |
641 | hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1); | |
642 | BT_DBG("report len %d", skb->len); | |
643 | } | |
1da177e4 LT |
644 | } else { |
645 | BT_DBG("Unsupported protocol header 0x%02x", hdr); | |
646 | } | |
647 | ||
648 | kfree_skb(skb); | |
649 | } | |
650 | ||
651 | static int hidp_send_frame(struct socket *sock, unsigned char *data, int len) | |
652 | { | |
653 | struct kvec iv = { data, len }; | |
654 | struct msghdr msg; | |
655 | ||
656 | BT_DBG("sock %p data %p len %d", sock, data, len); | |
657 | ||
658 | if (!len) | |
659 | return 0; | |
660 | ||
661 | memset(&msg, 0, sizeof(msg)); | |
662 | ||
663 | return kernel_sendmsg(sock, &msg, &iv, 1, len); | |
664 | } | |
665 | ||
b03efcfb | 666 | static void hidp_process_transmit(struct hidp_session *session) |
1da177e4 LT |
667 | { |
668 | struct sk_buff *skb; | |
669 | ||
670 | BT_DBG("session %p", session); | |
671 | ||
672 | while ((skb = skb_dequeue(&session->ctrl_transmit))) { | |
673 | if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) { | |
674 | skb_queue_head(&session->ctrl_transmit, skb); | |
675 | break; | |
676 | } | |
677 | ||
678 | hidp_set_timer(session); | |
679 | kfree_skb(skb); | |
680 | } | |
681 | ||
682 | while ((skb = skb_dequeue(&session->intr_transmit))) { | |
683 | if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) { | |
684 | skb_queue_head(&session->intr_transmit, skb); | |
685 | break; | |
686 | } | |
687 | ||
688 | hidp_set_timer(session); | |
689 | kfree_skb(skb); | |
690 | } | |
1da177e4 LT |
691 | } |
692 | ||
693 | static int hidp_session(void *arg) | |
694 | { | |
695 | struct hidp_session *session = arg; | |
696 | struct sock *ctrl_sk = session->ctrl_sock->sk; | |
697 | struct sock *intr_sk = session->intr_sock->sk; | |
698 | struct sk_buff *skb; | |
1da177e4 LT |
699 | wait_queue_t ctrl_wait, intr_wait; |
700 | ||
701 | BT_DBG("session %p", session); | |
702 | ||
1da177e4 | 703 | set_user_nice(current, -15); |
1da177e4 LT |
704 | |
705 | init_waitqueue_entry(&ctrl_wait, current); | |
706 | init_waitqueue_entry(&intr_wait, current); | |
aa395145 ED |
707 | add_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); |
708 | add_wait_queue(sk_sleep(intr_sk), &intr_wait); | |
0f69dca2 AO |
709 | session->waiting_for_startup = 0; |
710 | wake_up_interruptible(&session->startup_queue); | |
7bb59df8 PH |
711 | set_current_state(TASK_INTERRUPTIBLE); |
712 | while (!atomic_read(&session->terminate)) { | |
17f09a7e SJ |
713 | if (ctrl_sk->sk_state != BT_CONNECTED || |
714 | intr_sk->sk_state != BT_CONNECTED) | |
1da177e4 LT |
715 | break; |
716 | ||
717 | while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) { | |
718 | skb_orphan(skb); | |
719 | hidp_recv_ctrl_frame(session, skb); | |
720 | } | |
721 | ||
722 | while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) { | |
723 | skb_orphan(skb); | |
724 | hidp_recv_intr_frame(session, skb); | |
725 | } | |
726 | ||
727 | hidp_process_transmit(session); | |
728 | ||
729 | schedule(); | |
7bb59df8 | 730 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 LT |
731 | } |
732 | set_current_state(TASK_RUNNING); | |
aa395145 ED |
733 | remove_wait_queue(sk_sleep(intr_sk), &intr_wait); |
734 | remove_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); | |
1da177e4 LT |
735 | |
736 | down_write(&hidp_session_sem); | |
737 | ||
738 | hidp_del_timer(session); | |
739 | ||
1da177e4 LT |
740 | if (session->input) { |
741 | input_unregister_device(session->input); | |
34abf91f | 742 | session->input = NULL; |
1da177e4 LT |
743 | } |
744 | ||
e1aaadd4 | 745 | if (session->hid) { |
85cdaf52 | 746 | hid_destroy_device(session->hid); |
edad6388 | 747 | session->hid = NULL; |
e1aaadd4 MH |
748 | } |
749 | ||
ec8dab36 MH |
750 | /* Wakeup user-space polling for socket errors */ |
751 | session->intr_sock->sk->sk_err = EUNATCH; | |
752 | session->ctrl_sock->sk->sk_err = EUNATCH; | |
753 | ||
754 | hidp_schedule(session); | |
755 | ||
1c39858b DW |
756 | fput(session->intr_sock->file); |
757 | ||
aa395145 | 758 | wait_event_timeout(*(sk_sleep(ctrl_sk)), |
1c39858b DW |
759 | (ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500)); |
760 | ||
761 | fput(session->ctrl_sock->file); | |
762 | ||
763 | __hidp_unlink_session(session); | |
764 | ||
1da177e4 LT |
765 | up_write(&hidp_session_sem); |
766 | ||
1c97e94c | 767 | kfree(session->rd_data); |
1da177e4 LT |
768 | kfree(session); |
769 | return 0; | |
770 | } | |
771 | ||
0a85b964 MH |
772 | static struct device *hidp_get_device(struct hidp_session *session) |
773 | { | |
774 | bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src; | |
775 | bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst; | |
edad6388 | 776 | struct device *device = NULL; |
0a85b964 | 777 | struct hci_dev *hdev; |
0a85b964 MH |
778 | |
779 | hdev = hci_get_route(dst, src); | |
780 | if (!hdev) | |
781 | return NULL; | |
782 | ||
edad6388 MH |
783 | session->conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
784 | if (session->conn) | |
785 | device = &session->conn->dev; | |
0a85b964 MH |
786 | |
787 | hci_dev_put(hdev); | |
788 | ||
edad6388 | 789 | return device; |
0a85b964 MH |
790 | } |
791 | ||
91f5cca3 AM |
792 | static int hidp_setup_input(struct hidp_session *session, |
793 | struct hidp_connadd_req *req) | |
1da177e4 | 794 | { |
c500c971 | 795 | struct input_dev *input; |
edad6388 | 796 | int err, i; |
1da177e4 | 797 | |
c500c971 JS |
798 | input = input_allocate_device(); |
799 | if (!input) | |
800 | return -ENOMEM; | |
801 | ||
802 | session->input = input; | |
803 | ||
5be39466 | 804 | input_set_drvdata(input, session); |
1da177e4 | 805 | |
34abf91f DT |
806 | input->name = "Bluetooth HID Boot Protocol Device"; |
807 | ||
1da177e4 LT |
808 | input->id.bustype = BUS_BLUETOOTH; |
809 | input->id.vendor = req->vendor; | |
810 | input->id.product = req->product; | |
811 | input->id.version = req->version; | |
812 | ||
813 | if (req->subclass & 0x40) { | |
814 | set_bit(EV_KEY, input->evbit); | |
815 | set_bit(EV_LED, input->evbit); | |
816 | set_bit(EV_REP, input->evbit); | |
817 | ||
818 | set_bit(LED_NUML, input->ledbit); | |
819 | set_bit(LED_CAPSL, input->ledbit); | |
820 | set_bit(LED_SCROLLL, input->ledbit); | |
821 | set_bit(LED_COMPOSE, input->ledbit); | |
822 | set_bit(LED_KANA, input->ledbit); | |
823 | ||
824 | for (i = 0; i < sizeof(hidp_keycode); i++) | |
825 | set_bit(hidp_keycode[i], input->keybit); | |
826 | clear_bit(0, input->keybit); | |
827 | } | |
828 | ||
829 | if (req->subclass & 0x80) { | |
7b19ada2 JS |
830 | input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
831 | input->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | | |
832 | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); | |
833 | input->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); | |
834 | input->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) | | |
835 | BIT_MASK(BTN_EXTRA); | |
836 | input->relbit[0] |= BIT_MASK(REL_WHEEL); | |
1da177e4 LT |
837 | } |
838 | ||
5be39466 | 839 | input->dev.parent = hidp_get_device(session); |
0a85b964 | 840 | |
1da177e4 LT |
841 | input->event = hidp_input_event; |
842 | ||
edad6388 MH |
843 | err = input_register_device(input); |
844 | if (err < 0) { | |
615aedd6 PH |
845 | input_free_device(input); |
846 | session->input = NULL; | |
edad6388 MH |
847 | return err; |
848 | } | |
849 | ||
850 | return 0; | |
1da177e4 LT |
851 | } |
852 | ||
f5ffd462 MH |
853 | static int hidp_open(struct hid_device *hid) |
854 | { | |
855 | return 0; | |
856 | } | |
857 | ||
858 | static void hidp_close(struct hid_device *hid) | |
859 | { | |
860 | } | |
861 | ||
c500c971 JS |
862 | static int hidp_parse(struct hid_device *hid) |
863 | { | |
864 | struct hidp_session *session = hid->driver_data; | |
c500c971 | 865 | |
15c697ce MP |
866 | return hid_parse_report(session->hid, session->rd_data, |
867 | session->rd_size); | |
c500c971 JS |
868 | } |
869 | ||
870 | static int hidp_start(struct hid_device *hid) | |
871 | { | |
872 | struct hidp_session *session = hid->driver_data; | |
873 | struct hid_report *report; | |
874 | ||
875 | list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT]. | |
876 | report_list, list) | |
877 | hidp_send_report(session, report); | |
878 | ||
879 | list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT]. | |
880 | report_list, list) | |
881 | hidp_send_report(session, report); | |
882 | ||
c500c971 JS |
883 | return 0; |
884 | } | |
885 | ||
886 | static void hidp_stop(struct hid_device *hid) | |
887 | { | |
888 | struct hidp_session *session = hid->driver_data; | |
889 | ||
890 | skb_queue_purge(&session->ctrl_transmit); | |
891 | skb_queue_purge(&session->intr_transmit); | |
892 | ||
c500c971 JS |
893 | hid->claimed = 0; |
894 | } | |
895 | ||
896 | static struct hid_ll_driver hidp_hid_driver = { | |
897 | .parse = hidp_parse, | |
898 | .start = hidp_start, | |
899 | .stop = hidp_stop, | |
900 | .open = hidp_open, | |
901 | .close = hidp_close, | |
902 | .hidinput_input_event = hidp_hidinput_event, | |
903 | }; | |
904 | ||
0f69dca2 AO |
905 | /* This function sets up the hid device. It does not add it |
906 | to the HID system. That is done in hidp_add_connection(). */ | |
85cdaf52 | 907 | static int hidp_setup_hid(struct hidp_session *session, |
91f5cca3 | 908 | struct hidp_connadd_req *req) |
e1aaadd4 | 909 | { |
c500c971 | 910 | struct hid_device *hid; |
edad6388 | 911 | int err; |
e1aaadd4 | 912 | |
15c697ce MP |
913 | session->rd_data = kzalloc(req->rd_size, GFP_KERNEL); |
914 | if (!session->rd_data) | |
915 | return -ENOMEM; | |
916 | ||
917 | if (copy_from_user(session->rd_data, req->rd_data, req->rd_size)) { | |
918 | err = -EFAULT; | |
919 | goto fault; | |
920 | } | |
921 | session->rd_size = req->rd_size; | |
922 | ||
c500c971 | 923 | hid = hid_allocate_device(); |
15c697ce MP |
924 | if (IS_ERR(hid)) { |
925 | err = PTR_ERR(hid); | |
926 | goto fault; | |
927 | } | |
e1aaadd4 | 928 | |
c500c971 | 929 | session->hid = hid; |
15c697ce | 930 | |
e1aaadd4 MH |
931 | hid->driver_data = session; |
932 | ||
e1aaadd4 MH |
933 | hid->bus = BUS_BLUETOOTH; |
934 | hid->vendor = req->vendor; | |
935 | hid->product = req->product; | |
936 | hid->version = req->version; | |
c500c971 | 937 | hid->country = req->country; |
e1aaadd4 MH |
938 | |
939 | strncpy(hid->name, req->name, 128); | |
d6b2eb2f GP |
940 | strncpy(hid->phys, batostr(&bt_sk(session->ctrl_sock->sk)->src), 64); |
941 | strncpy(hid->uniq, batostr(&bt_sk(session->ctrl_sock->sk)->dst), 64); | |
e1aaadd4 | 942 | |
85cdaf52 | 943 | hid->dev.parent = hidp_get_device(session); |
c500c971 | 944 | hid->ll_driver = &hidp_hid_driver; |
85cdaf52 | 945 | |
0ff1731a | 946 | hid->hid_get_raw_report = hidp_get_raw_report; |
2da31939 JK |
947 | hid->hid_output_raw_report = hidp_output_raw_report; |
948 | ||
c500c971 | 949 | return 0; |
edad6388 | 950 | |
15c697ce MP |
951 | fault: |
952 | kfree(session->rd_data); | |
953 | session->rd_data = NULL; | |
954 | ||
edad6388 | 955 | return err; |
e1aaadd4 MH |
956 | } |
957 | ||
1da177e4 LT |
958 | int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) |
959 | { | |
960 | struct hidp_session *session, *s; | |
aabf6f89 | 961 | int vendor, product; |
1da177e4 LT |
962 | int err; |
963 | ||
964 | BT_DBG(""); | |
965 | ||
966 | if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) || | |
967 | bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst)) | |
968 | return -ENOTUNIQ; | |
969 | ||
25ea6db0 | 970 | session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL); |
34abf91f | 971 | if (!session) |
1da177e4 | 972 | return -ENOMEM; |
1da177e4 | 973 | |
e1aaadd4 MH |
974 | BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size); |
975 | ||
1da177e4 LT |
976 | down_write(&hidp_session_sem); |
977 | ||
978 | s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst); | |
979 | if (s && s->state == BT_CONNECTED) { | |
980 | err = -EEXIST; | |
981 | goto failed; | |
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; | |
995 | session->state = BT_CONNECTED; | |
996 | ||
b24b8a24 | 997 | setup_timer(&session->timer, hidp_idle_timeout, (unsigned long)session); |
1da177e4 LT |
998 | |
999 | skb_queue_head_init(&session->ctrl_transmit); | |
1000 | skb_queue_head_init(&session->intr_transmit); | |
1001 | ||
0ff1731a AO |
1002 | mutex_init(&session->report_mutex); |
1003 | init_waitqueue_head(&session->report_queue); | |
0f69dca2 AO |
1004 | init_waitqueue_head(&session->startup_queue); |
1005 | session->waiting_for_startup = 1; | |
1da177e4 LT |
1006 | session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); |
1007 | session->idle_to = req->idle_to; | |
1008 | ||
c500c971 | 1009 | if (req->rd_size > 0) { |
85cdaf52 | 1010 | err = hidp_setup_hid(session, req); |
d458a9df | 1011 | if (err && err != -ENODEV) |
edad6388 | 1012 | goto purge; |
c500c971 JS |
1013 | } |
1014 | ||
1015 | if (!session->hid) { | |
1016 | err = hidp_setup_input(session, req); | |
1017 | if (err < 0) | |
edad6388 | 1018 | goto purge; |
85cdaf52 | 1019 | } |
e1aaadd4 | 1020 | |
1da177e4 LT |
1021 | __hidp_link_session(session); |
1022 | ||
1023 | hidp_set_timer(session); | |
1024 | ||
aabf6f89 SJ |
1025 | if (session->hid) { |
1026 | vendor = session->hid->vendor; | |
1027 | product = session->hid->product; | |
1028 | } else if (session->input) { | |
1029 | vendor = session->input->id.vendor; | |
1030 | product = session->input->id.product; | |
1031 | } else { | |
1032 | vendor = 0x0000; | |
1033 | product = 0x0000; | |
1034 | } | |
1035 | ||
1036 | session->task = kthread_run(hidp_session, session, "khidpd_%04x%04x", | |
1037 | vendor, product); | |
1038 | if (IS_ERR(session->task)) { | |
1039 | err = PTR_ERR(session->task); | |
1da177e4 | 1040 | goto unlink; |
aabf6f89 SJ |
1041 | } |
1042 | ||
0f69dca2 AO |
1043 | while (session->waiting_for_startup) { |
1044 | wait_event_interruptible(session->startup_queue, | |
1045 | !session->waiting_for_startup); | |
1046 | } | |
1047 | ||
1048 | err = hid_add_device(session->hid); | |
e9d5cb54 PH |
1049 | if (err < 0) { |
1050 | atomic_inc(&session->terminate); | |
1051 | wake_up_process(session->task); | |
1052 | up_write(&hidp_session_sem); | |
1053 | return err; | |
1054 | } | |
1da177e4 LT |
1055 | |
1056 | if (session->input) { | |
1057 | hidp_send_ctrl_message(session, | |
1058 | HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0); | |
1059 | session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE); | |
1060 | ||
1061 | session->leds = 0xff; | |
1062 | hidp_input_event(session->input, EV_LED, 0, 0); | |
1063 | } | |
1064 | ||
1065 | up_write(&hidp_session_sem); | |
1066 | return 0; | |
1067 | ||
1068 | unlink: | |
1069 | hidp_del_timer(session); | |
1070 | ||
1071 | __hidp_unlink_session(session); | |
1072 | ||
edad6388 | 1073 | if (session->input) { |
1da177e4 | 1074 | input_unregister_device(session->input); |
edad6388 MH |
1075 | session->input = NULL; |
1076 | } | |
1077 | ||
1078 | if (session->hid) { | |
85cdaf52 | 1079 | hid_destroy_device(session->hid); |
edad6388 MH |
1080 | session->hid = NULL; |
1081 | } | |
1082 | ||
15c697ce MP |
1083 | kfree(session->rd_data); |
1084 | session->rd_data = NULL; | |
1085 | ||
edad6388 | 1086 | purge: |
c500c971 JS |
1087 | skb_queue_purge(&session->ctrl_transmit); |
1088 | skb_queue_purge(&session->intr_transmit); | |
edad6388 | 1089 | |
c500c971 JS |
1090 | failed: |
1091 | up_write(&hidp_session_sem); | |
e1aaadd4 | 1092 | |
1da177e4 LT |
1093 | kfree(session); |
1094 | return err; | |
1095 | } | |
1096 | ||
1097 | int hidp_del_connection(struct hidp_conndel_req *req) | |
1098 | { | |
1099 | struct hidp_session *session; | |
1100 | int err = 0; | |
1101 | ||
1102 | BT_DBG(""); | |
1103 | ||
1104 | down_read(&hidp_session_sem); | |
1105 | ||
1106 | session = __hidp_get_session(&req->bdaddr); | |
1107 | if (session) { | |
1108 | if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) { | |
1109 | hidp_send_ctrl_message(session, | |
1110 | HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0); | |
1111 | } else { | |
1112 | /* Flush the transmit queues */ | |
1113 | skb_queue_purge(&session->ctrl_transmit); | |
1114 | skb_queue_purge(&session->intr_transmit); | |
1115 | ||
7bb59df8 PH |
1116 | atomic_inc(&session->terminate); |
1117 | wake_up_process(session->task); | |
1da177e4 LT |
1118 | } |
1119 | } else | |
1120 | err = -ENOENT; | |
1121 | ||
1122 | up_read(&hidp_session_sem); | |
1123 | return err; | |
1124 | } | |
1125 | ||
1126 | int hidp_get_connlist(struct hidp_connlist_req *req) | |
1127 | { | |
1128 | struct list_head *p; | |
1129 | int err = 0, n = 0; | |
1130 | ||
1131 | BT_DBG(""); | |
1132 | ||
1133 | down_read(&hidp_session_sem); | |
1134 | ||
1135 | list_for_each(p, &hidp_session_list) { | |
1136 | struct hidp_session *session; | |
1137 | struct hidp_conninfo ci; | |
1138 | ||
1139 | session = list_entry(p, struct hidp_session, list); | |
1140 | ||
1141 | __hidp_copy_session(session, &ci); | |
1142 | ||
1143 | if (copy_to_user(req->ci, &ci, sizeof(ci))) { | |
1144 | err = -EFAULT; | |
1145 | break; | |
1146 | } | |
1147 | ||
1148 | if (++n >= req->cnum) | |
1149 | break; | |
1150 | ||
1151 | req->ci++; | |
1152 | } | |
1153 | req->cnum = n; | |
1154 | ||
1155 | up_read(&hidp_session_sem); | |
1156 | return err; | |
1157 | } | |
1158 | ||
1159 | int hidp_get_conninfo(struct hidp_conninfo *ci) | |
1160 | { | |
1161 | struct hidp_session *session; | |
1162 | int err = 0; | |
1163 | ||
1164 | down_read(&hidp_session_sem); | |
1165 | ||
1166 | session = __hidp_get_session(&ci->bdaddr); | |
1167 | if (session) | |
1168 | __hidp_copy_session(session, ci); | |
1169 | else | |
1170 | err = -ENOENT; | |
1171 | ||
1172 | up_read(&hidp_session_sem); | |
1173 | return err; | |
1174 | } | |
1175 | ||
85cdaf52 JS |
1176 | static const struct hid_device_id hidp_table[] = { |
1177 | { HID_BLUETOOTH_DEVICE(HID_ANY_ID, HID_ANY_ID) }, | |
1178 | { } | |
1179 | }; | |
1180 | ||
1181 | static struct hid_driver hidp_driver = { | |
1182 | .name = "generic-bluetooth", | |
1183 | .id_table = hidp_table, | |
1184 | }; | |
1185 | ||
1da177e4 LT |
1186 | static int __init hidp_init(void) |
1187 | { | |
85cdaf52 JS |
1188 | int ret; |
1189 | ||
1da177e4 LT |
1190 | BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION); |
1191 | ||
85cdaf52 JS |
1192 | ret = hid_register_driver(&hidp_driver); |
1193 | if (ret) | |
1194 | goto err; | |
1195 | ||
1196 | ret = hidp_init_sockets(); | |
1197 | if (ret) | |
1198 | goto err_drv; | |
1199 | ||
1200 | return 0; | |
1201 | err_drv: | |
1202 | hid_unregister_driver(&hidp_driver); | |
1203 | err: | |
1204 | return ret; | |
1da177e4 LT |
1205 | } |
1206 | ||
1207 | static void __exit hidp_exit(void) | |
1208 | { | |
1209 | hidp_cleanup_sockets(); | |
85cdaf52 | 1210 | hid_unregister_driver(&hidp_driver); |
1da177e4 LT |
1211 | } |
1212 | ||
1213 | module_init(hidp_init); | |
1214 | module_exit(hidp_exit); | |
1215 | ||
1216 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
1217 | MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION); | |
1218 | MODULE_VERSION(VERSION); | |
1219 | MODULE_LICENSE("GPL"); | |
1220 | MODULE_ALIAS("bt-proto-6"); |