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>
43 #include <linux/hidraw.h>
45 #include <net/bluetooth/bluetooth.h>
46 #include <net/bluetooth/hci_core.h>
47 #include <net/bluetooth/l2cap.h>
53 static DECLARE_RWSEM(hidp_session_sem
);
54 static LIST_HEAD(hidp_session_list
);
56 static unsigned char hidp_keycode
[256] = {
57 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
58 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
59 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
60 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
61 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
62 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
63 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
64 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
65 115,114, 0, 0, 0,121, 0, 89, 93,124, 92, 94, 95, 0, 0, 0,
66 122,123, 90, 91, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
67 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
68 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
69 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
70 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
71 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
72 150,158,159,128,136,177,178,176,142,152,173,140
75 static unsigned char hidp_mkeyspat
[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 };
77 static struct hidp_session
*__hidp_get_session(bdaddr_t
*bdaddr
)
79 struct hidp_session
*session
;
84 list_for_each(p
, &hidp_session_list
) {
85 session
= list_entry(p
, struct hidp_session
, list
);
86 if (!bacmp(bdaddr
, &session
->bdaddr
))
92 static void __hidp_link_session(struct hidp_session
*session
)
94 __module_get(THIS_MODULE
);
95 list_add(&session
->list
, &hidp_session_list
);
97 hci_conn_hold_device(session
->conn
);
100 static void __hidp_unlink_session(struct hidp_session
*session
)
102 hci_conn_put_device(session
->conn
);
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 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 int __hidp_send_ctrl_message(struct hidp_session
*session
,
247 unsigned char hdr
, unsigned char *data
, int size
)
251 BT_DBG("session %p data %p size %d", session
, data
, size
);
253 if (!(skb
= alloc_skb(size
+ 1, GFP_ATOMIC
))) {
254 BT_ERR("Can't allocate memory for new frame");
258 *skb_put(skb
, 1) = hdr
;
259 if (data
&& size
> 0)
260 memcpy(skb_put(skb
, size
), data
, size
);
262 skb_queue_tail(&session
->ctrl_transmit
, skb
);
267 static inline int hidp_send_ctrl_message(struct hidp_session
*session
,
268 unsigned char hdr
, unsigned char *data
, int size
)
272 err
= __hidp_send_ctrl_message(session
, hdr
, data
, size
);
274 hidp_schedule(session
);
279 static int hidp_queue_report(struct hidp_session
*session
,
280 unsigned char *data
, int size
)
284 BT_DBG("session %p hid %p data %p size %d", session
, session
->hid
, data
, size
);
286 if (!(skb
= alloc_skb(size
+ 1, GFP_ATOMIC
))) {
287 BT_ERR("Can't allocate memory for new frame");
291 *skb_put(skb
, 1) = 0xa2;
293 memcpy(skb_put(skb
, size
), data
, size
);
295 skb_queue_tail(&session
->intr_transmit
, skb
);
297 hidp_schedule(session
);
302 static int hidp_send_report(struct hidp_session
*session
, struct hid_report
*report
)
304 unsigned char buf
[32];
307 rsize
= ((report
->size
- 1) >> 3) + 1 + (report
->id
> 0);
308 if (rsize
> sizeof(buf
))
311 hid_output_report(report
, buf
);
313 return hidp_queue_report(session
, buf
, rsize
);
316 static int hidp_output_raw_report(struct hid_device
*hid
, unsigned char *data
, size_t count
)
318 if (hidp_send_ctrl_message(hid
->driver_data
,
319 HIDP_TRANS_SET_REPORT
| HIDP_DATA_RTYPE_FEATURE
,
325 static void hidp_idle_timeout(unsigned long arg
)
327 struct hidp_session
*session
= (struct hidp_session
*) arg
;
329 atomic_inc(&session
->terminate
);
330 hidp_schedule(session
);
333 static void hidp_set_timer(struct hidp_session
*session
)
335 if (session
->idle_to
> 0)
336 mod_timer(&session
->timer
, jiffies
+ HZ
* session
->idle_to
);
339 static inline void hidp_del_timer(struct hidp_session
*session
)
341 if (session
->idle_to
> 0)
342 del_timer(&session
->timer
);
345 static void hidp_process_handshake(struct hidp_session
*session
,
348 BT_DBG("session %p param 0x%02x", session
, param
);
351 case HIDP_HSHK_SUCCESSFUL
:
352 /* FIXME: Call into SET_ GET_ handlers here */
355 case HIDP_HSHK_NOT_READY
:
356 case HIDP_HSHK_ERR_INVALID_REPORT_ID
:
357 case HIDP_HSHK_ERR_UNSUPPORTED_REQUEST
:
358 case HIDP_HSHK_ERR_INVALID_PARAMETER
:
359 /* FIXME: Call into SET_ GET_ handlers here */
362 case HIDP_HSHK_ERR_UNKNOWN
:
365 case HIDP_HSHK_ERR_FATAL
:
366 /* Device requests a reboot, as this is the only way this error
367 * can be recovered. */
368 __hidp_send_ctrl_message(session
,
369 HIDP_TRANS_HID_CONTROL
| HIDP_CTRL_SOFT_RESET
, NULL
, 0);
373 __hidp_send_ctrl_message(session
,
374 HIDP_TRANS_HANDSHAKE
| HIDP_HSHK_ERR_INVALID_PARAMETER
, NULL
, 0);
379 static void hidp_process_hid_control(struct hidp_session
*session
,
382 BT_DBG("session %p param 0x%02x", session
, param
);
384 if (param
== HIDP_CTRL_VIRTUAL_CABLE_UNPLUG
) {
385 /* Flush the transmit queues */
386 skb_queue_purge(&session
->ctrl_transmit
);
387 skb_queue_purge(&session
->intr_transmit
);
389 /* Kill session thread */
390 atomic_inc(&session
->terminate
);
391 hidp_schedule(session
);
395 static void hidp_process_data(struct hidp_session
*session
, struct sk_buff
*skb
,
398 BT_DBG("session %p skb %p len %d param 0x%02x", session
, skb
, skb
->len
, param
);
401 case HIDP_DATA_RTYPE_INPUT
:
402 hidp_set_timer(session
);
405 hidp_input_report(session
, skb
);
408 hid_input_report(session
->hid
, HID_INPUT_REPORT
, skb
->data
, skb
->len
, 0);
412 case HIDP_DATA_RTYPE_OTHER
:
413 case HIDP_DATA_RTYPE_OUPUT
:
414 case HIDP_DATA_RTYPE_FEATURE
:
418 __hidp_send_ctrl_message(session
,
419 HIDP_TRANS_HANDSHAKE
| HIDP_HSHK_ERR_INVALID_PARAMETER
, NULL
, 0);
423 static void hidp_recv_ctrl_frame(struct hidp_session
*session
,
426 unsigned char hdr
, type
, param
;
428 BT_DBG("session %p skb %p len %d", session
, skb
, skb
->len
);
433 type
= hdr
& HIDP_HEADER_TRANS_MASK
;
434 param
= hdr
& HIDP_HEADER_PARAM_MASK
;
437 case HIDP_TRANS_HANDSHAKE
:
438 hidp_process_handshake(session
, param
);
441 case HIDP_TRANS_HID_CONTROL
:
442 hidp_process_hid_control(session
, param
);
445 case HIDP_TRANS_DATA
:
446 hidp_process_data(session
, skb
, param
);
450 __hidp_send_ctrl_message(session
,
451 HIDP_TRANS_HANDSHAKE
| HIDP_HSHK_ERR_UNSUPPORTED_REQUEST
, NULL
, 0);
458 static void hidp_recv_intr_frame(struct hidp_session
*session
,
463 BT_DBG("session %p skb %p len %d", session
, skb
, skb
->len
);
468 if (hdr
== (HIDP_TRANS_DATA
| HIDP_DATA_RTYPE_INPUT
)) {
469 hidp_set_timer(session
);
472 hidp_input_report(session
, skb
);
475 hid_input_report(session
->hid
, HID_INPUT_REPORT
, skb
->data
, skb
->len
, 1);
476 BT_DBG("report len %d", skb
->len
);
479 BT_DBG("Unsupported protocol header 0x%02x", hdr
);
485 static int hidp_send_frame(struct socket
*sock
, unsigned char *data
, int len
)
487 struct kvec iv
= { data
, len
};
490 BT_DBG("sock %p data %p len %d", sock
, data
, len
);
495 memset(&msg
, 0, sizeof(msg
));
497 return kernel_sendmsg(sock
, &msg
, &iv
, 1, len
);
500 static void hidp_process_transmit(struct hidp_session
*session
)
504 BT_DBG("session %p", session
);
506 while ((skb
= skb_dequeue(&session
->ctrl_transmit
))) {
507 if (hidp_send_frame(session
->ctrl_sock
, skb
->data
, skb
->len
) < 0) {
508 skb_queue_head(&session
->ctrl_transmit
, skb
);
512 hidp_set_timer(session
);
516 while ((skb
= skb_dequeue(&session
->intr_transmit
))) {
517 if (hidp_send_frame(session
->intr_sock
, skb
->data
, skb
->len
) < 0) {
518 skb_queue_head(&session
->intr_transmit
, skb
);
522 hidp_set_timer(session
);
527 static int hidp_session(void *arg
)
529 struct hidp_session
*session
= arg
;
530 struct sock
*ctrl_sk
= session
->ctrl_sock
->sk
;
531 struct sock
*intr_sk
= session
->intr_sock
->sk
;
533 int vendor
= 0x0000, product
= 0x0000;
534 wait_queue_t ctrl_wait
, intr_wait
;
536 BT_DBG("session %p", session
);
538 if (session
->input
) {
539 vendor
= session
->input
->id
.vendor
;
540 product
= session
->input
->id
.product
;
544 vendor
= session
->hid
->vendor
;
545 product
= session
->hid
->product
;
548 daemonize("khidpd_%04x%04x", vendor
, product
);
549 set_user_nice(current
, -15);
551 init_waitqueue_entry(&ctrl_wait
, current
);
552 init_waitqueue_entry(&intr_wait
, current
);
553 add_wait_queue(ctrl_sk
->sk_sleep
, &ctrl_wait
);
554 add_wait_queue(intr_sk
->sk_sleep
, &intr_wait
);
555 while (!atomic_read(&session
->terminate
)) {
556 set_current_state(TASK_INTERRUPTIBLE
);
558 if (ctrl_sk
->sk_state
!= BT_CONNECTED
|| intr_sk
->sk_state
!= BT_CONNECTED
)
561 while ((skb
= skb_dequeue(&ctrl_sk
->sk_receive_queue
))) {
563 hidp_recv_ctrl_frame(session
, skb
);
566 while ((skb
= skb_dequeue(&intr_sk
->sk_receive_queue
))) {
568 hidp_recv_intr_frame(session
, skb
);
571 hidp_process_transmit(session
);
575 set_current_state(TASK_RUNNING
);
576 remove_wait_queue(intr_sk
->sk_sleep
, &intr_wait
);
577 remove_wait_queue(ctrl_sk
->sk_sleep
, &ctrl_wait
);
579 down_write(&hidp_session_sem
);
581 hidp_del_timer(session
);
583 if (session
->input
) {
584 input_unregister_device(session
->input
);
585 session
->input
= NULL
;
589 hid_destroy_device(session
->hid
);
593 /* Wakeup user-space polling for socket errors */
594 session
->intr_sock
->sk
->sk_err
= EUNATCH
;
595 session
->ctrl_sock
->sk
->sk_err
= EUNATCH
;
597 hidp_schedule(session
);
599 fput(session
->intr_sock
->file
);
601 wait_event_timeout(*(ctrl_sk
->sk_sleep
),
602 (ctrl_sk
->sk_state
== BT_CLOSED
), msecs_to_jiffies(500));
604 fput(session
->ctrl_sock
->file
);
606 __hidp_unlink_session(session
);
608 up_write(&hidp_session_sem
);
614 static struct device
*hidp_get_device(struct hidp_session
*session
)
616 bdaddr_t
*src
= &bt_sk(session
->ctrl_sock
->sk
)->src
;
617 bdaddr_t
*dst
= &bt_sk(session
->ctrl_sock
->sk
)->dst
;
618 struct device
*device
= NULL
;
619 struct hci_dev
*hdev
;
621 hdev
= hci_get_route(dst
, src
);
625 session
->conn
= hci_conn_hash_lookup_ba(hdev
, ACL_LINK
, dst
);
627 device
= &session
->conn
->dev
;
634 static int hidp_setup_input(struct hidp_session
*session
,
635 struct hidp_connadd_req
*req
)
637 struct input_dev
*input
;
640 input
= input_allocate_device();
644 session
->input
= input
;
646 input_set_drvdata(input
, session
);
648 input
->name
= "Bluetooth HID Boot Protocol Device";
650 input
->id
.bustype
= BUS_BLUETOOTH
;
651 input
->id
.vendor
= req
->vendor
;
652 input
->id
.product
= req
->product
;
653 input
->id
.version
= req
->version
;
655 if (req
->subclass
& 0x40) {
656 set_bit(EV_KEY
, input
->evbit
);
657 set_bit(EV_LED
, input
->evbit
);
658 set_bit(EV_REP
, input
->evbit
);
660 set_bit(LED_NUML
, input
->ledbit
);
661 set_bit(LED_CAPSL
, input
->ledbit
);
662 set_bit(LED_SCROLLL
, input
->ledbit
);
663 set_bit(LED_COMPOSE
, input
->ledbit
);
664 set_bit(LED_KANA
, input
->ledbit
);
666 for (i
= 0; i
< sizeof(hidp_keycode
); i
++)
667 set_bit(hidp_keycode
[i
], input
->keybit
);
668 clear_bit(0, input
->keybit
);
671 if (req
->subclass
& 0x80) {
672 input
->evbit
[0] = BIT_MASK(EV_KEY
) | BIT_MASK(EV_REL
);
673 input
->keybit
[BIT_WORD(BTN_MOUSE
)] = BIT_MASK(BTN_LEFT
) |
674 BIT_MASK(BTN_RIGHT
) | BIT_MASK(BTN_MIDDLE
);
675 input
->relbit
[0] = BIT_MASK(REL_X
) | BIT_MASK(REL_Y
);
676 input
->keybit
[BIT_WORD(BTN_MOUSE
)] |= BIT_MASK(BTN_SIDE
) |
678 input
->relbit
[0] |= BIT_MASK(REL_WHEEL
);
681 input
->dev
.parent
= hidp_get_device(session
);
683 input
->event
= hidp_input_event
;
685 err
= input_register_device(input
);
687 hci_conn_put_device(session
->conn
);
694 static int hidp_open(struct hid_device
*hid
)
699 static void hidp_close(struct hid_device
*hid
)
703 static int hidp_parse(struct hid_device
*hid
)
705 struct hidp_session
*session
= hid
->driver_data
;
706 struct hidp_connadd_req
*req
= session
->req
;
710 buf
= kmalloc(req
->rd_size
, GFP_KERNEL
);
714 if (copy_from_user(buf
, req
->rd_data
, req
->rd_size
)) {
719 ret
= hid_parse_report(session
->hid
, buf
, req
->rd_size
);
731 static int hidp_start(struct hid_device
*hid
)
733 struct hidp_session
*session
= hid
->driver_data
;
734 struct hid_report
*report
;
736 list_for_each_entry(report
, &hid
->report_enum
[HID_INPUT_REPORT
].
738 hidp_send_report(session
, report
);
740 list_for_each_entry(report
, &hid
->report_enum
[HID_FEATURE_REPORT
].
742 hidp_send_report(session
, report
);
747 static void hidp_stop(struct hid_device
*hid
)
749 struct hidp_session
*session
= hid
->driver_data
;
751 skb_queue_purge(&session
->ctrl_transmit
);
752 skb_queue_purge(&session
->intr_transmit
);
757 static struct hid_ll_driver hidp_hid_driver
= {
763 .hidinput_input_event
= hidp_hidinput_event
,
766 static int hidp_setup_hid(struct hidp_session
*session
,
767 struct hidp_connadd_req
*req
)
769 struct hid_device
*hid
;
773 hid
= hid_allocate_device();
779 hid
->driver_data
= session
;
781 baswap(&src
, &bt_sk(session
->ctrl_sock
->sk
)->src
);
782 baswap(&dst
, &bt_sk(session
->ctrl_sock
->sk
)->dst
);
784 hid
->bus
= BUS_BLUETOOTH
;
785 hid
->vendor
= req
->vendor
;
786 hid
->product
= req
->product
;
787 hid
->version
= req
->version
;
788 hid
->country
= req
->country
;
790 strncpy(hid
->name
, req
->name
, 128);
791 strncpy(hid
->phys
, batostr(&src
), 64);
792 strncpy(hid
->uniq
, batostr(&dst
), 64);
794 hid
->dev
.parent
= hidp_get_device(session
);
795 hid
->ll_driver
= &hidp_hid_driver
;
797 hid
->hid_output_raw_report
= hidp_output_raw_report
;
799 err
= hid_add_device(hid
);
806 hid_destroy_device(hid
);
812 int hidp_add_connection(struct hidp_connadd_req
*req
, struct socket
*ctrl_sock
, struct socket
*intr_sock
)
814 struct hidp_session
*session
, *s
;
819 if (bacmp(&bt_sk(ctrl_sock
->sk
)->src
, &bt_sk(intr_sock
->sk
)->src
) ||
820 bacmp(&bt_sk(ctrl_sock
->sk
)->dst
, &bt_sk(intr_sock
->sk
)->dst
))
823 session
= kzalloc(sizeof(struct hidp_session
), GFP_KERNEL
);
827 BT_DBG("rd_data %p rd_size %d", req
->rd_data
, req
->rd_size
);
829 down_write(&hidp_session_sem
);
831 s
= __hidp_get_session(&bt_sk(ctrl_sock
->sk
)->dst
);
832 if (s
&& s
->state
== BT_CONNECTED
) {
837 bacpy(&session
->bdaddr
, &bt_sk(ctrl_sock
->sk
)->dst
);
839 session
->ctrl_mtu
= min_t(uint
, l2cap_pi(ctrl_sock
->sk
)->omtu
, l2cap_pi(ctrl_sock
->sk
)->imtu
);
840 session
->intr_mtu
= min_t(uint
, l2cap_pi(intr_sock
->sk
)->omtu
, l2cap_pi(intr_sock
->sk
)->imtu
);
842 BT_DBG("ctrl mtu %d intr mtu %d", session
->ctrl_mtu
, session
->intr_mtu
);
844 session
->ctrl_sock
= ctrl_sock
;
845 session
->intr_sock
= intr_sock
;
846 session
->state
= BT_CONNECTED
;
848 setup_timer(&session
->timer
, hidp_idle_timeout
, (unsigned long)session
);
850 skb_queue_head_init(&session
->ctrl_transmit
);
851 skb_queue_head_init(&session
->intr_transmit
);
853 session
->flags
= req
->flags
& (1 << HIDP_BLUETOOTH_VENDOR_ID
);
854 session
->idle_to
= req
->idle_to
;
856 if (req
->rd_size
> 0) {
857 err
= hidp_setup_hid(session
, req
);
858 if (err
&& err
!= -ENODEV
)
863 err
= hidp_setup_input(session
, req
);
868 __hidp_link_session(session
);
870 hidp_set_timer(session
);
872 err
= kernel_thread(hidp_session
, session
, CLONE_KERNEL
);
876 if (session
->input
) {
877 hidp_send_ctrl_message(session
,
878 HIDP_TRANS_SET_PROTOCOL
| HIDP_PROTO_BOOT
, NULL
, 0);
879 session
->flags
|= (1 << HIDP_BOOT_PROTOCOL_MODE
);
881 session
->leds
= 0xff;
882 hidp_input_event(session
->input
, EV_LED
, 0, 0);
885 up_write(&hidp_session_sem
);
889 hidp_del_timer(session
);
891 __hidp_unlink_session(session
);
893 if (session
->input
) {
894 input_unregister_device(session
->input
);
895 session
->input
= NULL
;
899 hid_destroy_device(session
->hid
);
904 skb_queue_purge(&session
->ctrl_transmit
);
905 skb_queue_purge(&session
->intr_transmit
);
908 up_write(&hidp_session_sem
);
910 input_free_device(session
->input
);
915 int hidp_del_connection(struct hidp_conndel_req
*req
)
917 struct hidp_session
*session
;
922 down_read(&hidp_session_sem
);
924 session
= __hidp_get_session(&req
->bdaddr
);
926 if (req
->flags
& (1 << HIDP_VIRTUAL_CABLE_UNPLUG
)) {
927 hidp_send_ctrl_message(session
,
928 HIDP_TRANS_HID_CONTROL
| HIDP_CTRL_VIRTUAL_CABLE_UNPLUG
, NULL
, 0);
930 /* Flush the transmit queues */
931 skb_queue_purge(&session
->ctrl_transmit
);
932 skb_queue_purge(&session
->intr_transmit
);
934 /* Wakeup user-space polling for socket errors */
935 session
->intr_sock
->sk
->sk_err
= EUNATCH
;
936 session
->ctrl_sock
->sk
->sk_err
= EUNATCH
;
938 /* Kill session thread */
939 atomic_inc(&session
->terminate
);
940 hidp_schedule(session
);
945 up_read(&hidp_session_sem
);
949 int hidp_get_connlist(struct hidp_connlist_req
*req
)
956 down_read(&hidp_session_sem
);
958 list_for_each(p
, &hidp_session_list
) {
959 struct hidp_session
*session
;
960 struct hidp_conninfo ci
;
962 session
= list_entry(p
, struct hidp_session
, list
);
964 __hidp_copy_session(session
, &ci
);
966 if (copy_to_user(req
->ci
, &ci
, sizeof(ci
))) {
971 if (++n
>= req
->cnum
)
978 up_read(&hidp_session_sem
);
982 int hidp_get_conninfo(struct hidp_conninfo
*ci
)
984 struct hidp_session
*session
;
987 down_read(&hidp_session_sem
);
989 session
= __hidp_get_session(&ci
->bdaddr
);
991 __hidp_copy_session(session
, ci
);
995 up_read(&hidp_session_sem
);
999 static const struct hid_device_id hidp_table
[] = {
1000 { HID_BLUETOOTH_DEVICE(HID_ANY_ID
, HID_ANY_ID
) },
1004 static struct hid_driver hidp_driver
= {
1005 .name
= "generic-bluetooth",
1006 .id_table
= hidp_table
,
1009 static int __init
hidp_init(void)
1015 BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION
);
1017 ret
= hid_register_driver(&hidp_driver
);
1021 ret
= hidp_init_sockets();
1027 hid_unregister_driver(&hidp_driver
);
1032 static void __exit
hidp_exit(void)
1034 hidp_cleanup_sockets();
1035 hid_unregister_driver(&hidp_driver
);
1038 module_init(hidp_init
);
1039 module_exit(hidp_exit
);
1041 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1042 MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION
);
1043 MODULE_VERSION(VERSION
);
1044 MODULE_LICENSE("GPL");
1045 MODULE_ALIAS("bt-proto-6");