2 CMTP implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2002-2003 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>
24 #include <linux/proc_fs.h>
25 #include <linux/seq_file.h>
26 #include <linux/types.h>
27 #include <linux/errno.h>
28 #include <linux/kernel.h>
29 #include <linux/sched.h>
30 #include <linux/slab.h>
31 #include <linux/poll.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/wait.h>
38 #include <linux/kthread.h>
41 #include <linux/isdn/capilli.h>
42 #include <linux/isdn/capicmd.h>
43 #include <linux/isdn/capiutil.h>
47 #define CAPI_INTEROPERABILITY 0x20
49 #define CAPI_INTEROPERABILITY_REQ CAPICMD(CAPI_INTEROPERABILITY, CAPI_REQ)
50 #define CAPI_INTEROPERABILITY_CONF CAPICMD(CAPI_INTEROPERABILITY, CAPI_CONF)
51 #define CAPI_INTEROPERABILITY_IND CAPICMD(CAPI_INTEROPERABILITY, CAPI_IND)
52 #define CAPI_INTEROPERABILITY_RESP CAPICMD(CAPI_INTEROPERABILITY, CAPI_RESP)
54 #define CAPI_INTEROPERABILITY_REQ_LEN (CAPI_MSG_BASELEN + 2)
55 #define CAPI_INTEROPERABILITY_CONF_LEN (CAPI_MSG_BASELEN + 4)
56 #define CAPI_INTEROPERABILITY_IND_LEN (CAPI_MSG_BASELEN + 2)
57 #define CAPI_INTEROPERABILITY_RESP_LEN (CAPI_MSG_BASELEN + 2)
59 #define CAPI_FUNCTION_REGISTER 0
60 #define CAPI_FUNCTION_RELEASE 1
61 #define CAPI_FUNCTION_GET_PROFILE 2
62 #define CAPI_FUNCTION_GET_MANUFACTURER 3
63 #define CAPI_FUNCTION_GET_VERSION 4
64 #define CAPI_FUNCTION_GET_SERIAL_NUMBER 5
65 #define CAPI_FUNCTION_MANUFACTURER 6
66 #define CAPI_FUNCTION_LOOPBACK 7
71 #define CMTP_MAPPING 3
73 static struct cmtp_application
*cmtp_application_add(struct cmtp_session
*session
, __u16 appl
)
75 struct cmtp_application
*app
= kzalloc(sizeof(*app
), GFP_KERNEL
);
77 BT_DBG("session %p application %p appl %d", session
, app
, appl
);
85 list_add_tail(&app
->list
, &session
->applications
);
90 static void cmtp_application_del(struct cmtp_session
*session
, struct cmtp_application
*app
)
92 BT_DBG("session %p application %p", session
, app
);
100 static struct cmtp_application
*cmtp_application_get(struct cmtp_session
*session
, int pattern
, __u16 value
)
102 struct cmtp_application
*app
;
103 struct list_head
*p
, *n
;
105 list_for_each_safe(p
, n
, &session
->applications
) {
106 app
= list_entry(p
, struct cmtp_application
, list
);
109 if (app
->msgnum
== value
)
113 if (app
->appl
== value
)
117 if (app
->mapping
== value
)
126 static int cmtp_msgnum_get(struct cmtp_session
*session
)
130 if ((session
->msgnum
& 0xff) > 200)
131 session
->msgnum
= CMTP_INITIAL_MSGNUM
+ 1;
133 return session
->msgnum
;
136 static void cmtp_send_capimsg(struct cmtp_session
*session
, struct sk_buff
*skb
)
138 struct cmtp_scb
*scb
= (void *) skb
->cb
;
140 BT_DBG("session %p skb %p len %d", session
, skb
, skb
->len
);
143 scb
->data
= (CAPIMSG_COMMAND(skb
->data
) == CAPI_DATA_B3
);
145 skb_queue_tail(&session
->transmit
, skb
);
147 wake_up_interruptible(sk_sleep(session
->sock
->sk
));
150 static void cmtp_send_interopmsg(struct cmtp_session
*session
,
151 __u8 subcmd
, __u16 appl
, __u16 msgnum
,
152 __u16 function
, unsigned char *buf
, int len
)
157 BT_DBG("session %p subcmd 0x%02x appl %d msgnum %d", session
, subcmd
, appl
, msgnum
);
159 skb
= alloc_skb(CAPI_MSG_BASELEN
+ 6 + len
, GFP_ATOMIC
);
161 BT_ERR("Can't allocate memory for interoperability packet");
165 s
= skb_put(skb
, CAPI_MSG_BASELEN
+ 6 + len
);
167 capimsg_setu16(s
, 0, CAPI_MSG_BASELEN
+ 6 + len
);
168 capimsg_setu16(s
, 2, appl
);
169 capimsg_setu8 (s
, 4, CAPI_INTEROPERABILITY
);
170 capimsg_setu8 (s
, 5, subcmd
);
171 capimsg_setu16(s
, 6, msgnum
);
173 /* Interoperability selector (Bluetooth Device Management) */
174 capimsg_setu16(s
, 8, 0x0001);
176 capimsg_setu8 (s
, 10, 3 + len
);
177 capimsg_setu16(s
, 11, function
);
178 capimsg_setu8 (s
, 13, len
);
181 memcpy(s
+ 14, buf
, len
);
183 cmtp_send_capimsg(session
, skb
);
186 static void cmtp_recv_interopmsg(struct cmtp_session
*session
, struct sk_buff
*skb
)
188 struct capi_ctr
*ctrl
= &session
->ctrl
;
189 struct cmtp_application
*application
;
190 __u16 appl
, msgnum
, func
, info
;
193 BT_DBG("session %p skb %p len %d", session
, skb
, skb
->len
);
195 switch (CAPIMSG_SUBCOMMAND(skb
->data
)) {
197 if (skb
->len
< CAPI_MSG_BASELEN
+ 10)
200 func
= CAPIMSG_U16(skb
->data
, CAPI_MSG_BASELEN
+ 5);
201 info
= CAPIMSG_U16(skb
->data
, CAPI_MSG_BASELEN
+ 8);
204 case CAPI_FUNCTION_REGISTER
:
205 msgnum
= CAPIMSG_MSGID(skb
->data
);
207 application
= cmtp_application_get(session
, CMTP_MSGNUM
, msgnum
);
209 application
->state
= BT_CONNECTED
;
210 application
->msgnum
= 0;
211 application
->mapping
= CAPIMSG_APPID(skb
->data
);
212 wake_up_interruptible(&session
->wait
);
217 case CAPI_FUNCTION_RELEASE
:
218 appl
= CAPIMSG_APPID(skb
->data
);
220 application
= cmtp_application_get(session
, CMTP_MAPPING
, appl
);
222 application
->state
= BT_CLOSED
;
223 application
->msgnum
= 0;
224 wake_up_interruptible(&session
->wait
);
229 case CAPI_FUNCTION_GET_PROFILE
:
230 if (skb
->len
< CAPI_MSG_BASELEN
+ 11 + sizeof(capi_profile
))
233 controller
= CAPIMSG_U16(skb
->data
, CAPI_MSG_BASELEN
+ 11);
234 msgnum
= CAPIMSG_MSGID(skb
->data
);
236 if (!info
&& (msgnum
== CMTP_INITIAL_MSGNUM
)) {
237 session
->ncontroller
= controller
;
238 wake_up_interruptible(&session
->wait
);
243 memcpy(&ctrl
->profile
,
244 skb
->data
+ CAPI_MSG_BASELEN
+ 11,
245 sizeof(capi_profile
));
246 session
->state
= BT_CONNECTED
;
247 capi_ctr_ready(ctrl
);
252 case CAPI_FUNCTION_GET_MANUFACTURER
:
253 if (skb
->len
< CAPI_MSG_BASELEN
+ 15)
256 controller
= CAPIMSG_U32(skb
->data
, CAPI_MSG_BASELEN
+ 10);
259 int len
= min_t(uint
, CAPI_MANUFACTURER_LEN
,
260 skb
->data
[CAPI_MSG_BASELEN
+ 14]);
262 memset(ctrl
->manu
, 0, CAPI_MANUFACTURER_LEN
);
264 skb
->data
+ CAPI_MSG_BASELEN
+ 15, len
);
269 case CAPI_FUNCTION_GET_VERSION
:
270 if (skb
->len
< CAPI_MSG_BASELEN
+ 32)
273 controller
= CAPIMSG_U32(skb
->data
, CAPI_MSG_BASELEN
+ 12);
276 ctrl
->version
.majorversion
= CAPIMSG_U32(skb
->data
, CAPI_MSG_BASELEN
+ 16);
277 ctrl
->version
.minorversion
= CAPIMSG_U32(skb
->data
, CAPI_MSG_BASELEN
+ 20);
278 ctrl
->version
.majormanuversion
= CAPIMSG_U32(skb
->data
, CAPI_MSG_BASELEN
+ 24);
279 ctrl
->version
.minormanuversion
= CAPIMSG_U32(skb
->data
, CAPI_MSG_BASELEN
+ 28);
284 case CAPI_FUNCTION_GET_SERIAL_NUMBER
:
285 if (skb
->len
< CAPI_MSG_BASELEN
+ 17)
288 controller
= CAPIMSG_U32(skb
->data
, CAPI_MSG_BASELEN
+ 12);
291 int len
= min_t(uint
, CAPI_SERIAL_LEN
,
292 skb
->data
[CAPI_MSG_BASELEN
+ 16]);
294 memset(ctrl
->serial
, 0, CAPI_SERIAL_LEN
);
295 strncpy(ctrl
->serial
,
296 skb
->data
+ CAPI_MSG_BASELEN
+ 17, len
);
305 if (skb
->len
< CAPI_MSG_BASELEN
+ 6)
308 func
= CAPIMSG_U16(skb
->data
, CAPI_MSG_BASELEN
+ 3);
310 if (func
== CAPI_FUNCTION_LOOPBACK
) {
311 int len
= min_t(uint
, skb
->len
- CAPI_MSG_BASELEN
- 6,
312 skb
->data
[CAPI_MSG_BASELEN
+ 5]);
313 appl
= CAPIMSG_APPID(skb
->data
);
314 msgnum
= CAPIMSG_MSGID(skb
->data
);
315 cmtp_send_interopmsg(session
, CAPI_RESP
, appl
, msgnum
, func
,
316 skb
->data
+ CAPI_MSG_BASELEN
+ 6, len
);
325 void cmtp_recv_capimsg(struct cmtp_session
*session
, struct sk_buff
*skb
)
327 struct capi_ctr
*ctrl
= &session
->ctrl
;
328 struct cmtp_application
*application
;
332 BT_DBG("session %p skb %p len %d", session
, skb
, skb
->len
);
334 if (skb
->len
< CAPI_MSG_BASELEN
)
337 if (CAPIMSG_COMMAND(skb
->data
) == CAPI_INTEROPERABILITY
) {
338 cmtp_recv_interopmsg(session
, skb
);
342 if (session
->flags
& (1 << CMTP_LOOPBACK
)) {
347 appl
= CAPIMSG_APPID(skb
->data
);
348 contr
= CAPIMSG_CONTROL(skb
->data
);
350 application
= cmtp_application_get(session
, CMTP_MAPPING
, appl
);
352 appl
= application
->appl
;
353 CAPIMSG_SETAPPID(skb
->data
, appl
);
355 BT_ERR("Can't find application with id %d", appl
);
360 if ((contr
& 0x7f) == 0x01) {
361 contr
= (contr
& 0xffffff80) | session
->num
;
362 CAPIMSG_SETCONTROL(skb
->data
, contr
);
366 BT_ERR("Can't find controller %d for message", session
->num
);
371 capi_ctr_handle_message(ctrl
, appl
, skb
);
374 static int cmtp_load_firmware(struct capi_ctr
*ctrl
, capiloaddata
*data
)
376 BT_DBG("ctrl %p data %p", ctrl
, data
);
381 static void cmtp_reset_ctr(struct capi_ctr
*ctrl
)
383 struct cmtp_session
*session
= ctrl
->driverdata
;
385 BT_DBG("ctrl %p", ctrl
);
389 atomic_inc(&session
->terminate
);
390 wake_up_process(session
->task
);
393 static void cmtp_register_appl(struct capi_ctr
*ctrl
, __u16 appl
, capi_register_params
*rp
)
395 DECLARE_WAITQUEUE(wait
, current
);
396 struct cmtp_session
*session
= ctrl
->driverdata
;
397 struct cmtp_application
*application
;
398 unsigned long timeo
= CMTP_INTEROP_TIMEOUT
;
399 unsigned char buf
[8];
400 int err
= 0, nconn
, want
= rp
->level3cnt
;
402 BT_DBG("ctrl %p appl %d level3cnt %d datablkcnt %d datablklen %d",
403 ctrl
, appl
, rp
->level3cnt
, rp
->datablkcnt
, rp
->datablklen
);
405 application
= cmtp_application_add(session
, appl
);
407 BT_ERR("Can't allocate memory for new application");
412 nconn
= ctrl
->profile
.nbchannel
* -want
;
417 nconn
= ctrl
->profile
.nbchannel
;
419 capimsg_setu16(buf
, 0, nconn
);
420 capimsg_setu16(buf
, 2, rp
->datablkcnt
);
421 capimsg_setu16(buf
, 4, rp
->datablklen
);
423 application
->state
= BT_CONFIG
;
424 application
->msgnum
= cmtp_msgnum_get(session
);
426 cmtp_send_interopmsg(session
, CAPI_REQ
, 0x0000, application
->msgnum
,
427 CAPI_FUNCTION_REGISTER
, buf
, 6);
429 add_wait_queue(&session
->wait
, &wait
);
431 set_current_state(TASK_INTERRUPTIBLE
);
438 if (application
->state
== BT_CLOSED
) {
439 err
= -application
->err
;
443 if (application
->state
== BT_CONNECTED
)
446 if (signal_pending(current
)) {
451 timeo
= schedule_timeout(timeo
);
453 set_current_state(TASK_RUNNING
);
454 remove_wait_queue(&session
->wait
, &wait
);
457 cmtp_application_del(session
, application
);
462 static void cmtp_release_appl(struct capi_ctr
*ctrl
, __u16 appl
)
464 struct cmtp_session
*session
= ctrl
->driverdata
;
465 struct cmtp_application
*application
;
467 BT_DBG("ctrl %p appl %d", ctrl
, appl
);
469 application
= cmtp_application_get(session
, CMTP_APPLID
, appl
);
471 BT_ERR("Can't find application");
475 application
->msgnum
= cmtp_msgnum_get(session
);
477 cmtp_send_interopmsg(session
, CAPI_REQ
, application
->mapping
, application
->msgnum
,
478 CAPI_FUNCTION_RELEASE
, NULL
, 0);
480 wait_event_interruptible_timeout(session
->wait
,
481 (application
->state
== BT_CLOSED
), CMTP_INTEROP_TIMEOUT
);
483 cmtp_application_del(session
, application
);
486 static u16
cmtp_send_message(struct capi_ctr
*ctrl
, struct sk_buff
*skb
)
488 struct cmtp_session
*session
= ctrl
->driverdata
;
489 struct cmtp_application
*application
;
493 BT_DBG("ctrl %p skb %p", ctrl
, skb
);
495 appl
= CAPIMSG_APPID(skb
->data
);
496 contr
= CAPIMSG_CONTROL(skb
->data
);
498 application
= cmtp_application_get(session
, CMTP_APPLID
, appl
);
499 if ((!application
) || (application
->state
!= BT_CONNECTED
)) {
500 BT_ERR("Can't find application with id %d", appl
);
501 return CAPI_ILLAPPNR
;
504 CAPIMSG_SETAPPID(skb
->data
, application
->mapping
);
506 if ((contr
& 0x7f) == session
->num
) {
507 contr
= (contr
& 0xffffff80) | 0x01;
508 CAPIMSG_SETCONTROL(skb
->data
, contr
);
511 cmtp_send_capimsg(session
, skb
);
516 static char *cmtp_procinfo(struct capi_ctr
*ctrl
)
518 return "CAPI Message Transport Protocol";
521 static int cmtp_proc_show(struct seq_file
*m
, void *v
)
523 struct capi_ctr
*ctrl
= m
->private;
524 struct cmtp_session
*session
= ctrl
->driverdata
;
525 struct cmtp_application
*app
;
526 struct list_head
*p
, *n
;
528 seq_printf(m
, "%s\n\n", cmtp_procinfo(ctrl
));
529 seq_printf(m
, "addr %s\n", session
->name
);
530 seq_printf(m
, "ctrl %d\n", session
->num
);
532 list_for_each_safe(p
, n
, &session
->applications
) {
533 app
= list_entry(p
, struct cmtp_application
, list
);
534 seq_printf(m
, "appl %d -> %d\n", app
->appl
, app
->mapping
);
540 static int cmtp_proc_open(struct inode
*inode
, struct file
*file
)
542 return single_open(file
, cmtp_proc_show
, PDE(inode
)->data
);
545 static const struct file_operations cmtp_proc_fops
= {
546 .owner
= THIS_MODULE
,
547 .open
= cmtp_proc_open
,
550 .release
= single_release
,
553 int cmtp_attach_device(struct cmtp_session
*session
)
555 unsigned char buf
[4];
558 BT_DBG("session %p", session
);
560 capimsg_setu32(buf
, 0, 0);
562 cmtp_send_interopmsg(session
, CAPI_REQ
, 0xffff, CMTP_INITIAL_MSGNUM
,
563 CAPI_FUNCTION_GET_PROFILE
, buf
, 4);
565 ret
= wait_event_interruptible_timeout(session
->wait
,
566 session
->ncontroller
, CMTP_INTEROP_TIMEOUT
);
568 BT_INFO("Found %d CAPI controller(s) on device %s", session
->ncontroller
, session
->name
);
573 if (!session
->ncontroller
)
576 if (session
->ncontroller
> 1)
577 BT_INFO("Setting up only CAPI controller 1");
579 session
->ctrl
.owner
= THIS_MODULE
;
580 session
->ctrl
.driverdata
= session
;
581 strcpy(session
->ctrl
.name
, session
->name
);
583 session
->ctrl
.driver_name
= "cmtp";
584 session
->ctrl
.load_firmware
= cmtp_load_firmware
;
585 session
->ctrl
.reset_ctr
= cmtp_reset_ctr
;
586 session
->ctrl
.register_appl
= cmtp_register_appl
;
587 session
->ctrl
.release_appl
= cmtp_release_appl
;
588 session
->ctrl
.send_message
= cmtp_send_message
;
590 session
->ctrl
.procinfo
= cmtp_procinfo
;
591 session
->ctrl
.proc_fops
= &cmtp_proc_fops
;
593 if (attach_capi_ctr(&session
->ctrl
) < 0) {
594 BT_ERR("Can't attach new controller");
598 session
->num
= session
->ctrl
.cnr
;
600 BT_DBG("session %p num %d", session
, session
->num
);
602 capimsg_setu32(buf
, 0, 1);
604 cmtp_send_interopmsg(session
, CAPI_REQ
, 0xffff, cmtp_msgnum_get(session
),
605 CAPI_FUNCTION_GET_MANUFACTURER
, buf
, 4);
607 cmtp_send_interopmsg(session
, CAPI_REQ
, 0xffff, cmtp_msgnum_get(session
),
608 CAPI_FUNCTION_GET_VERSION
, buf
, 4);
610 cmtp_send_interopmsg(session
, CAPI_REQ
, 0xffff, cmtp_msgnum_get(session
),
611 CAPI_FUNCTION_GET_SERIAL_NUMBER
, buf
, 4);
613 cmtp_send_interopmsg(session
, CAPI_REQ
, 0xffff, cmtp_msgnum_get(session
),
614 CAPI_FUNCTION_GET_PROFILE
, buf
, 4);
619 void cmtp_detach_device(struct cmtp_session
*session
)
621 BT_DBG("session %p", session
);
623 detach_capi_ctr(&session
->ctrl
);