2 HIDP implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2003-2004 Marcel Holtmann <marcel@holtmann.org>
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;
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
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
16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
19 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
20 SOFTWARE IS DISCLAIMED.
23 #include <linux/module.h>
25 #include <linux/types.h>
26 #include <linux/errno.h>
27 #include <linux/kernel.h>
28 #include <linux/sched.h>
29 #include <linux/slab.h>
30 #include <linux/poll.h>
31 #include <linux/freezer.h>
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>
41 #include <linux/input.h>
42 #include <linux/hid.h>
44 #include <net/bluetooth/bluetooth.h>
45 #include <net/bluetooth/hci_core.h>
46 #include <net/bluetooth/l2cap.h>
50 #ifndef CONFIG_BT_HIDP_DEBUG
57 static DECLARE_RWSEM(hidp_session_sem);
58 static LIST_HEAD(hidp_session_list);
60 static unsigned char hidp_keycode[256] = {
61 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
62 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
63 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
64 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
65 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
66 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
67 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
68 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
69 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0,
70 122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
71 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
72 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
73 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
74 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
75 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
76 150,158,159,128,136,177,178,176,142,152,173,140
79 static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 };
81 static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr)
83 struct hidp_session *session;
88 list_for_each(p, &hidp_session_list) {
89 session = list_entry(p, struct hidp_session, list);
90 if (!bacmp(bdaddr, &session->bdaddr))
96 static void __hidp_link_session(struct hidp_session *session)
98 __module_get(THIS_MODULE);
99 list_add(&session->list, &hidp_session_list);
102 static void __hidp_unlink_session(struct hidp_session *session)
104 list_del(&session->list);
105 module_put(THIS_MODULE);
108 static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci)
110 bacpy(&ci->bdaddr, &session->bdaddr);
112 ci->flags = session->flags;
113 ci->state = session->state;
116 ci->product = 0x0000;
117 ci->version = 0x0000;
118 memset(ci->name, 0, 128);
120 if (session->input) {
121 ci->vendor = session->input->id.vendor;
122 ci->product = session->input->id.product;
123 ci->version = session->input->id.version;
124 if (session->input->name)
125 strncpy(ci->name, session->input->name, 128);
127 strncpy(ci->name, "HID Boot Device", 128);
131 ci->vendor = session->hid->vendor;
132 ci->product = session->hid->product;
133 ci->version = session->hid->version;
134 strncpy(ci->name, session->hid->name, 128);
138 static inline int hidp_queue_event(struct hidp_session *session, struct input_dev *dev,
139 unsigned int type, unsigned int code, int value)
141 unsigned char newleds;
144 BT_DBG("session %p type %d code %d value %d", session, type, code, value);
149 newleds = (!!test_bit(LED_KANA, dev->led) << 3) |
150 (!!test_bit(LED_COMPOSE, dev->led) << 3) |
151 (!!test_bit(LED_SCROLLL, dev->led) << 2) |
152 (!!test_bit(LED_CAPSL, dev->led) << 1) |
153 (!!test_bit(LED_NUML, dev->led));
155 if (session->leds == newleds)
158 session->leds = newleds;
160 if (!(skb = alloc_skb(3, GFP_ATOMIC))) {
161 BT_ERR("Can't allocate memory for new frame");
165 *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT;
166 *skb_put(skb, 1) = 0x01;
167 *skb_put(skb, 1) = newleds;
169 skb_queue_tail(&session->intr_transmit, skb);
171 hidp_schedule(session);
176 static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
178 struct hid_device *hid = input_get_drvdata(dev);
179 struct hidp_session *session = hid->driver_data;
181 return hidp_queue_event(session, dev, type, code, value);
184 static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
186 struct hidp_session *session = input_get_drvdata(dev);
188 return hidp_queue_event(session, dev, type, code, value);
191 static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb)
193 struct input_dev *dev = session->input;
194 unsigned char *keys = session->keys;
195 unsigned char *udata = skb->data + 1;
196 signed char *sdata = skb->data + 1;
197 int i, size = skb->len - 1;
199 switch (skb->data[0]) {
200 case 0x01: /* Keyboard report */
201 for (i = 0; i < 8; i++)
202 input_report_key(dev, hidp_keycode[i + 224], (udata[0] >> i) & 1);
204 /* If all the key codes have been set to 0x01, it means
205 * too many keys were pressed at the same time. */
206 if (!memcmp(udata + 2, hidp_mkeyspat, 6))
209 for (i = 2; i < 8; i++) {
210 if (keys[i] > 3 && memscan(udata + 2, keys[i], 6) == udata + 8) {
211 if (hidp_keycode[keys[i]])
212 input_report_key(dev, hidp_keycode[keys[i]], 0);
214 BT_ERR("Unknown key (scancode %#x) released.", keys[i]);
217 if (udata[i] > 3 && memscan(keys + 2, udata[i], 6) == keys + 8) {
218 if (hidp_keycode[udata[i]])
219 input_report_key(dev, hidp_keycode[udata[i]], 1);
221 BT_ERR("Unknown key (scancode %#x) pressed.", udata[i]);
225 memcpy(keys, udata, 8);
228 case 0x02: /* Mouse report */
229 input_report_key(dev, BTN_LEFT, sdata[0] & 0x01);
230 input_report_key(dev, BTN_RIGHT, sdata[0] & 0x02);
231 input_report_key(dev, BTN_MIDDLE, sdata[0] & 0x04);
232 input_report_key(dev, BTN_SIDE, sdata[0] & 0x08);
233 input_report_key(dev, BTN_EXTRA, sdata[0] & 0x10);
235 input_report_rel(dev, REL_X, sdata[1]);
236 input_report_rel(dev, REL_Y, sdata[2]);
239 input_report_rel(dev, REL_WHEEL, sdata[3]);
246 static inline int hidp_queue_report(struct hidp_session *session, unsigned char *data, int size)
250 BT_DBG("session %p hid %p data %p size %d", session, session->hid, data, size);
252 if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) {
253 BT_ERR("Can't allocate memory for new frame");
257 *skb_put(skb, 1) = 0xa2;
259 memcpy(skb_put(skb, size), data, size);
261 skb_queue_tail(&session->intr_transmit, skb);
263 hidp_schedule(session);
268 static int hidp_send_report(struct hidp_session *session, struct hid_report *report)
270 unsigned char buf[32];
273 rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0);
274 if (rsize > sizeof(buf))
277 hid_output_report(report, buf);
279 return hidp_queue_report(session, buf, rsize);
282 static void hidp_idle_timeout(unsigned long arg)
284 struct hidp_session *session = (struct hidp_session *) arg;
286 atomic_inc(&session->terminate);
287 hidp_schedule(session);
290 static inline void hidp_set_timer(struct hidp_session *session)
292 if (session->idle_to > 0)
293 mod_timer(&session->timer, jiffies + HZ * session->idle_to);
296 static inline void hidp_del_timer(struct hidp_session *session)
298 if (session->idle_to > 0)
299 del_timer(&session->timer);
302 static int __hidp_send_ctrl_message(struct hidp_session *session,
303 unsigned char hdr, unsigned char *data, int size)
307 BT_DBG("session %p data %p size %d", session, data, size);
309 if (!(skb = alloc_skb(size + 1, GFP_ATOMIC))) {
310 BT_ERR("Can't allocate memory for new frame");
314 *skb_put(skb, 1) = hdr;
315 if (data && size > 0)
316 memcpy(skb_put(skb, size), data, size);
318 skb_queue_tail(&session->ctrl_transmit, skb);
323 static inline int hidp_send_ctrl_message(struct hidp_session *session,
324 unsigned char hdr, unsigned char *data, int size)
328 err = __hidp_send_ctrl_message(session, hdr, data, size);
330 hidp_schedule(session);
335 static inline void hidp_process_handshake(struct hidp_session *session, unsigned char param)
337 BT_DBG("session %p param 0x%02x", session, param);
340 case HIDP_HSHK_SUCCESSFUL:
341 /* FIXME: Call into SET_ GET_ handlers here */
344 case HIDP_HSHK_NOT_READY:
345 case HIDP_HSHK_ERR_INVALID_REPORT_ID:
346 case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST:
347 case HIDP_HSHK_ERR_INVALID_PARAMETER:
348 /* FIXME: Call into SET_ GET_ handlers here */
351 case HIDP_HSHK_ERR_UNKNOWN:
354 case HIDP_HSHK_ERR_FATAL:
355 /* Device requests a reboot, as this is the only way this error
356 * can be recovered. */
357 __hidp_send_ctrl_message(session,
358 HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0);
362 __hidp_send_ctrl_message(session,
363 HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
368 static inline void hidp_process_hid_control(struct hidp_session *session, unsigned char param)
370 BT_DBG("session %p param 0x%02x", session, param);
372 if (param == HIDP_CTRL_VIRTUAL_CABLE_UNPLUG) {
373 /* Flush the transmit queues */
374 skb_queue_purge(&session->ctrl_transmit);
375 skb_queue_purge(&session->intr_transmit);
377 /* Kill session thread */
378 atomic_inc(&session->terminate);
382 static inline void hidp_process_data(struct hidp_session *session, struct sk_buff *skb, unsigned char param)
384 BT_DBG("session %p skb %p len %d param 0x%02x", session, skb, skb->len, param);
387 case HIDP_DATA_RTYPE_INPUT:
388 hidp_set_timer(session);
391 hidp_input_report(session, skb);
394 hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0);
398 case HIDP_DATA_RTYPE_OTHER:
399 case HIDP_DATA_RTYPE_OUPUT:
400 case HIDP_DATA_RTYPE_FEATURE:
404 __hidp_send_ctrl_message(session,
405 HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0);
409 static inline void hidp_recv_ctrl_frame(struct hidp_session *session, struct sk_buff *skb)
411 unsigned char hdr, type, param;
413 BT_DBG("session %p skb %p len %d", session, skb, skb->len);
418 type = hdr & HIDP_HEADER_TRANS_MASK;
419 param = hdr & HIDP_HEADER_PARAM_MASK;
422 case HIDP_TRANS_HANDSHAKE:
423 hidp_process_handshake(session, param);
426 case HIDP_TRANS_HID_CONTROL:
427 hidp_process_hid_control(session, param);
430 case HIDP_TRANS_DATA:
431 hidp_process_data(session, skb, param);
435 __hidp_send_ctrl_message(session,
436 HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0);
443 static inline void hidp_recv_intr_frame(struct hidp_session *session, struct sk_buff *skb)
447 BT_DBG("session %p skb %p len %d", session, skb, skb->len);
452 if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) {
453 hidp_set_timer(session);
456 hidp_input_report(session, skb);
459 hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1);
460 BT_DBG("report len %d", skb->len);
463 BT_DBG("Unsupported protocol header 0x%02x", hdr);
469 static int hidp_send_frame(struct socket *sock, unsigned char *data, int len)
471 struct kvec iv = { data, len };
474 BT_DBG("sock %p data %p len %d", sock, data, len);
479 memset(&msg, 0, sizeof(msg));
481 return kernel_sendmsg(sock, &msg, &iv, 1, len);
484 static void hidp_process_transmit(struct hidp_session *session)
488 BT_DBG("session %p", session);
490 while ((skb = skb_dequeue(&session->ctrl_transmit))) {
491 if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) {
492 skb_queue_head(&session->ctrl_transmit, skb);
496 hidp_set_timer(session);
500 while ((skb = skb_dequeue(&session->intr_transmit))) {
501 if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) {
502 skb_queue_head(&session->intr_transmit, skb);
506 hidp_set_timer(session);
511 static int hidp_session(void *arg)
513 struct hidp_session *session = arg;
514 struct sock *ctrl_sk = session->ctrl_sock->sk;
515 struct sock *intr_sk = session->intr_sock->sk;
517 int vendor = 0x0000, product = 0x0000;
518 wait_queue_t ctrl_wait, intr_wait;
520 BT_DBG("session %p", session);
522 if (session->input) {
523 vendor = session->input->id.vendor;
524 product = session->input->id.product;
528 vendor = session->hid->vendor;
529 product = session->hid->product;
532 daemonize("khidpd_%04x%04x", vendor, product);
533 set_user_nice(current, -15);
535 init_waitqueue_entry(&ctrl_wait, current);
536 init_waitqueue_entry(&intr_wait, current);
537 add_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait);
538 add_wait_queue(intr_sk->sk_sleep, &intr_wait);
539 while (!atomic_read(&session->terminate)) {
540 set_current_state(TASK_INTERRUPTIBLE);
542 if (ctrl_sk->sk_state != BT_CONNECTED || intr_sk->sk_state != BT_CONNECTED)
545 while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) {
547 hidp_recv_ctrl_frame(session, skb);
550 while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) {
552 hidp_recv_intr_frame(session, skb);
555 hidp_process_transmit(session);
559 set_current_state(TASK_RUNNING);
560 remove_wait_queue(intr_sk->sk_sleep, &intr_wait);
561 remove_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait);
563 down_write(&hidp_session_sem);
565 hidp_del_timer(session);
567 if (session->input) {
568 input_unregister_device(session->input);
569 session->input = NULL;
573 if (session->hid->claimed & HID_CLAIMED_INPUT)
574 hidinput_disconnect(session->hid);
575 hid_free_device(session->hid);
578 fput(session->intr_sock->file);
580 wait_event_timeout(*(ctrl_sk->sk_sleep),
581 (ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500));
583 fput(session->ctrl_sock->file);
585 __hidp_unlink_session(session);
587 up_write(&hidp_session_sem);
593 static struct device *hidp_get_device(struct hidp_session *session)
595 bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src;
596 bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst;
597 struct hci_dev *hdev;
598 struct hci_conn *conn;
600 hdev = hci_get_route(dst, src);
604 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst);
608 return conn ? &conn->dev : NULL;
611 static inline int hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req)
613 struct input_dev *input = session->input;
616 input_set_drvdata(input, session);
618 input->name = "Bluetooth HID Boot Protocol Device";
620 input->id.bustype = BUS_BLUETOOTH;
621 input->id.vendor = req->vendor;
622 input->id.product = req->product;
623 input->id.version = req->version;
625 if (req->subclass & 0x40) {
626 set_bit(EV_KEY, input->evbit);
627 set_bit(EV_LED, input->evbit);
628 set_bit(EV_REP, input->evbit);
630 set_bit(LED_NUML, input->ledbit);
631 set_bit(LED_CAPSL, input->ledbit);
632 set_bit(LED_SCROLLL, input->ledbit);
633 set_bit(LED_COMPOSE, input->ledbit);
634 set_bit(LED_KANA, input->ledbit);
636 for (i = 0; i < sizeof(hidp_keycode); i++)
637 set_bit(hidp_keycode[i], input->keybit);
638 clear_bit(0, input->keybit);
641 if (req->subclass & 0x80) {
642 input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
643 input->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
644 BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
645 input->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
646 input->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) |
648 input->relbit[0] |= BIT_MASK(REL_WHEEL);
651 input->dev.parent = hidp_get_device(session);
653 input->event = hidp_input_event;
655 return input_register_device(input);
658 static int hidp_open(struct hid_device *hid)
663 static void hidp_close(struct hid_device *hid)
667 static const struct {
671 } hidp_blacklist[] = {
672 /* Apple wireless Mighty Mouse */
673 { 0x05ac, 0x030c, HID_QUIRK_MIGHTYMOUSE | HID_QUIRK_INVERT_HWHEEL },
675 { } /* Terminating entry */
678 static void hidp_setup_quirks(struct hid_device *hid)
682 for (n = 0; hidp_blacklist[n].idVendor; n++)
683 if (hidp_blacklist[n].idVendor == le16_to_cpu(hid->vendor) &&
684 hidp_blacklist[n].idProduct == le16_to_cpu(hid->product))
685 hid->quirks = hidp_blacklist[n].quirks;
688 static inline void hidp_setup_hid(struct hidp_session *session, struct hidp_connadd_req *req)
690 struct hid_device *hid = session->hid;
691 struct hid_report *report;
694 baswap(&src, &bt_sk(session->ctrl_sock->sk)->src);
695 baswap(&dst, &bt_sk(session->ctrl_sock->sk)->dst);
697 hid->driver_data = session;
699 hid->country = req->country;
701 hid->bus = BUS_BLUETOOTH;
702 hid->vendor = req->vendor;
703 hid->product = req->product;
704 hid->version = req->version;
706 strncpy(hid->name, req->name, 128);
707 strncpy(hid->phys, batostr(&src), 64);
708 strncpy(hid->uniq, batostr(&dst), 64);
710 hid->dev = hidp_get_device(session);
712 hid->hid_open = hidp_open;
713 hid->hid_close = hidp_close;
715 hid->hidinput_input_event = hidp_hidinput_event;
717 hidp_setup_quirks(hid);
719 list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list)
720 hidp_send_report(session, report);
722 list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
723 hidp_send_report(session, report);
725 if (hidinput_connect(hid) == 0)
726 hid->claimed |= HID_CLAIMED_INPUT;
729 int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock)
731 struct hidp_session *session, *s;
736 if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) ||
737 bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst))
740 session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL);
744 BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size);
746 if (req->rd_size > 0) {
747 unsigned char *buf = kmalloc(req->rd_size, GFP_KERNEL);
754 if (copy_from_user(buf, req->rd_data, req->rd_size)) {
760 session->hid = hid_parse_report(buf, req->rd_size);
771 session->input = input_allocate_device();
772 if (!session->input) {
778 down_write(&hidp_session_sem);
780 s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst);
781 if (s && s->state == BT_CONNECTED) {
786 bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst);
788 session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->omtu, l2cap_pi(ctrl_sock->sk)->imtu);
789 session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->omtu, l2cap_pi(intr_sock->sk)->imtu);
791 BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu);
793 session->ctrl_sock = ctrl_sock;
794 session->intr_sock = intr_sock;
795 session->state = BT_CONNECTED;
797 setup_timer(&session->timer, hidp_idle_timeout, (unsigned long)session);
799 skb_queue_head_init(&session->ctrl_transmit);
800 skb_queue_head_init(&session->intr_transmit);
802 session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID);
803 session->idle_to = req->idle_to;
805 if (session->input) {
806 err = hidp_setup_input(session, req);
812 hidp_setup_hid(session, req);
814 __hidp_link_session(session);
816 hidp_set_timer(session);
818 err = kernel_thread(hidp_session, session, CLONE_KERNEL);
822 if (session->input) {
823 hidp_send_ctrl_message(session,
824 HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0);
825 session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE);
827 session->leds = 0xff;
828 hidp_input_event(session->input, EV_LED, 0, 0);
831 up_write(&hidp_session_sem);
835 hidp_del_timer(session);
837 __hidp_unlink_session(session);
839 if (session->input) {
840 input_unregister_device(session->input);
841 session->input = NULL; /* don't try to free it here */
845 up_write(&hidp_session_sem);
848 hid_free_device(session->hid);
850 input_free_device(session->input);
855 int hidp_del_connection(struct hidp_conndel_req *req)
857 struct hidp_session *session;
862 down_read(&hidp_session_sem);
864 session = __hidp_get_session(&req->bdaddr);
866 if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) {
867 hidp_send_ctrl_message(session,
868 HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0);
870 /* Flush the transmit queues */
871 skb_queue_purge(&session->ctrl_transmit);
872 skb_queue_purge(&session->intr_transmit);
874 /* Kill session thread */
875 atomic_inc(&session->terminate);
876 hidp_schedule(session);
881 up_read(&hidp_session_sem);
885 int hidp_get_connlist(struct hidp_connlist_req *req)
892 down_read(&hidp_session_sem);
894 list_for_each(p, &hidp_session_list) {
895 struct hidp_session *session;
896 struct hidp_conninfo ci;
898 session = list_entry(p, struct hidp_session, list);
900 __hidp_copy_session(session, &ci);
902 if (copy_to_user(req->ci, &ci, sizeof(ci))) {
907 if (++n >= req->cnum)
914 up_read(&hidp_session_sem);
918 int hidp_get_conninfo(struct hidp_conninfo *ci)
920 struct hidp_session *session;
923 down_read(&hidp_session_sem);
925 session = __hidp_get_session(&ci->bdaddr);
927 __hidp_copy_session(session, ci);
931 up_read(&hidp_session_sem);
935 static int __init hidp_init(void)
939 BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION);
941 return hidp_init_sockets();
944 static void __exit hidp_exit(void)
946 hidp_cleanup_sockets();
949 module_init(hidp_init);
950 module_exit(hidp_exit);
952 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
953 MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION);
954 MODULE_VERSION(VERSION);
955 MODULE_LICENSE("GPL");
956 MODULE_ALIAS("bt-proto-6");