projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[Bluetooth] Add platform device for virtual and serial devices
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / net / bluetooth / hci_core.h
CommitLineData
1da177e4
LT		 1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23*/
24
25#ifndef __HCI_CORE_H
26#define __HCI_CORE_H
27
1da177e4
LT		 28#include <net/bluetooth/hci.h>
29
30/* HCI upper protocols */
31#define HCI_PROTO_L2CAP 0
32#define HCI_PROTO_SCO 1
33
1da177e4 34/* HCI Core structures */
1da177e4
LT		 35struct inquiry_data {
36 bdaddr_t bdaddr;
37 __u8 pscan_rep_mode;
38 __u8 pscan_period_mode;
39 __u8 pscan_mode;
40 __u8 dev_class[3];
1ebb9252 41 __le16 clock_offset;
1da177e4
LT		 42 __s8 rssi;
43};
44
45struct inquiry_entry {
46 struct inquiry_entry *next;
47 __u32 timestamp;
48 struct inquiry_data data;
49};
50
51struct inquiry_cache {
52 spinlock_t lock;
53 __u32 timestamp;
54 struct inquiry_entry *list;
55};
56
57struct hci_conn_hash {
58 struct list_head list;
59 spinlock_t lock;
60 unsigned int acl_num;
61 unsigned int sco_num;
62};
63
64struct hci_dev {
65 struct list_head list;
66 spinlock_t lock;
67 atomic_t refcnt;
68
69 char name[8];
70 unsigned long flags;
71 __u16 id;
72 __u8 type;
73 bdaddr_t bdaddr;
74 __u8 features[8];
75 __u16 voice_setting;
76
77 __u16 pkt_type;
78 __u16 link_policy;
79 __u16 link_mode;
80
04837f64
MH		 81 __u32 idle_timeout;
82 __u16 sniff_min_interval;
83 __u16 sniff_max_interval;
84
1da177e4
LT		 85 unsigned long quirks;
86
87 atomic_t cmd_cnt;
88 unsigned int acl_cnt;
89 unsigned int sco_cnt;
90
91 unsigned int acl_mtu;
92 unsigned int sco_mtu;
93 unsigned int acl_pkts;
94 unsigned int sco_pkts;
95
96 unsigned long cmd_last_tx;
97 unsigned long acl_last_tx;
98 unsigned long sco_last_tx;
99
100 struct tasklet_struct cmd_task;
101 struct tasklet_struct rx_task;
102 struct tasklet_struct tx_task;
103
104 struct sk_buff_head rx_q;
105 struct sk_buff_head raw_q;
106 struct sk_buff_head cmd_q;
107
108 struct sk_buff *sent_cmd;
109
110 struct semaphore req_lock;
111 wait_queue_head_t req_wait_q;
112 __u32 req_status;
113 __u32 req_result;
114
115 struct inquiry_cache inq_cache;
116 struct hci_conn_hash conn_hash;
117
118 struct hci_dev_stats stat;
119
120 struct sk_buff_head driver_init;
121
122 void *driver_data;
123 void *core_data;
124
125 atomic_t promisc;
126
27d35284 127 struct device *dev;
1da177e4
LT		 128 struct class_device class_dev;
129
130 struct module *owner;
131
132 int (*open)(struct hci_dev *hdev);
133 int (*close)(struct hci_dev *hdev);
134 int (*flush)(struct hci_dev *hdev);
135 int (*send)(struct sk_buff *skb);
136 void (*destruct)(struct hci_dev *hdev);
137 void (*notify)(struct hci_dev *hdev, unsigned int evt);
138 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
139};
140
141struct hci_conn {
142 struct list_head list;
143
144 atomic_t refcnt;
145 spinlock_t lock;
146
147 bdaddr_t dst;
148 __u16 handle;
149 __u16 state;
04837f64 150 __u8 mode;
1da177e4
LT		 151 __u8 type;
152 __u8 out;
153 __u8 dev_class[3];
04837f64
MH		 154 __u8 features[8];
155 __u16 interval;
156 __u16 link_policy;
1da177e4 157 __u32 link_mode;
04837f64 158 __u8 power_save;
1da177e4 159 unsigned long pend;
04837f64 160
1da177e4 161 unsigned int sent;
04837f64 162
1da177e4
LT		 163 struct sk_buff_head data_q;
164
04837f64
MH		 165 struct timer_list disc_timer;
166 struct timer_list idle_timer;
167
1da177e4
LT		 168 struct hci_dev *hdev;
169 void *l2cap_data;
170 void *sco_data;
171 void *priv;
172
173 struct hci_conn *link;
174};
175
176extern struct hci_proto *hci_proto[];
177extern struct list_head hci_dev_list;
178extern struct list_head hci_cb_list;
179extern rwlock_t hci_dev_list_lock;
180extern rwlock_t hci_cb_list_lock;
181
182/* ----- Inquiry cache ----- */
183#define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
184#define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
185
186#define inquiry_cache_lock(c) spin_lock(&c->lock)
187#define inquiry_cache_unlock(c) spin_unlock(&c->lock)
188#define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
189#define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
190
191static inline void inquiry_cache_init(struct hci_dev *hdev)
192{
193 struct inquiry_cache *c = &hdev->inq_cache;
194 spin_lock_init(&c->lock);
195 c->list = NULL;
196}
197
198static inline int inquiry_cache_empty(struct hci_dev *hdev)
199{
200 struct inquiry_cache *c = &hdev->inq_cache;
201 return (c->list == NULL);
202}
203
204static inline long inquiry_cache_age(struct hci_dev *hdev)
205{
206 struct inquiry_cache *c = &hdev->inq_cache;
207 return jiffies - c->timestamp;
208}
209
210static inline long inquiry_entry_age(struct inquiry_entry *e)
211{
212 return jiffies - e->timestamp;
213}
214
215struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
216void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
217
218/* ----- HCI Connections ----- */
219enum {
220 HCI_CONN_AUTH_PEND,
221 HCI_CONN_ENCRYPT_PEND,
04837f64
MH		 222 HCI_CONN_RSWITCH_PEND,
223 HCI_CONN_MODE_CHANGE_PEND,
1da177e4
LT		 224};
225
226static inline void hci_conn_hash_init(struct hci_dev *hdev)
227{
228 struct hci_conn_hash *h = &hdev->conn_hash;
229 INIT_LIST_HEAD(&h->list);
230 spin_lock_init(&h->lock);
231 h->acl_num = 0;
232 h->sco_num = 0;
233}
234
235static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
236{
237 struct hci_conn_hash *h = &hdev->conn_hash;
238 list_add(&c->list, &h->list);
239 if (c->type == ACL_LINK)
240 h->acl_num++;
241 else
242 h->sco_num++;
243}
244
245static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
246{
247 struct hci_conn_hash *h = &hdev->conn_hash;
248 list_del(&c->list);
249 if (c->type == ACL_LINK)
250 h->acl_num--;
251 else
252 h->sco_num--;
253}
254
255static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
256 __u16 handle)
257{
258 struct hci_conn_hash *h = &hdev->conn_hash;
259 struct list_head *p;
260 struct hci_conn *c;
261
262 list_for_each(p, &h->list) {
263 c = list_entry(p, struct hci_conn, list);
264 if (c->handle == handle)
265 return c;
266 }
267 return NULL;
268}
269
270static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
271 __u8 type, bdaddr_t *ba)
272{
273 struct hci_conn_hash *h = &hdev->conn_hash;
274 struct list_head *p;
275 struct hci_conn *c;
276
277 list_for_each(p, &h->list) {
278 c = list_entry(p, struct hci_conn, list);
279 if (c->type == type && !bacmp(&c->dst, ba))
280 return c;
281 }
282 return NULL;
283}
284
285void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
286void hci_add_sco(struct hci_conn *conn, __u16 handle);
287
288struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
289int hci_conn_del(struct hci_conn *conn);
290void hci_conn_hash_flush(struct hci_dev *hdev);
291
292struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
293int hci_conn_auth(struct hci_conn *conn);
294int hci_conn_encrypt(struct hci_conn *conn);
295int hci_conn_change_link_key(struct hci_conn *conn);
296int hci_conn_switch_role(struct hci_conn *conn, uint8_t role);
297
04837f64
MH		 298void hci_conn_enter_active_mode(struct hci_conn *conn);
299void hci_conn_enter_sniff_mode(struct hci_conn *conn);
1da177e4
LT		 300
301static inline void hci_conn_hold(struct hci_conn *conn)
302{
303 atomic_inc(&conn->refcnt);
04837f64 304 del_timer(&conn->disc_timer);
1da177e4
LT		 305}
306
307static inline void hci_conn_put(struct hci_conn *conn)
308{
309 if (atomic_dec_and_test(&conn->refcnt)) {
04837f64 310 unsigned long timeo;
1da177e4 311 if (conn->type == ACL_LINK) {
04837f64
MH		 312 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
313 if (!conn->out)
314 timeo *= 2;
315 del_timer(&conn->idle_timer);
1da177e4 316 } else
04837f64
MH		 317 timeo = msecs_to_jiffies(10);
318 mod_timer(&conn->disc_timer, jiffies + timeo);
1da177e4
LT		 319 }
320}
321
322/* ----- HCI tasks ----- */
323static inline void hci_sched_cmd(struct hci_dev *hdev)
324{
325 tasklet_schedule(&hdev->cmd_task);
326}
327
328static inline void hci_sched_rx(struct hci_dev *hdev)
329{
330 tasklet_schedule(&hdev->rx_task);
331}
332
333static inline void hci_sched_tx(struct hci_dev *hdev)
334{
335 tasklet_schedule(&hdev->tx_task);
336}
337
338/* ----- HCI Devices ----- */
339static inline void __hci_dev_put(struct hci_dev *d)
340{
341 if (atomic_dec_and_test(&d->refcnt))
342 d->destruct(d);
343}
344
345static inline void hci_dev_put(struct hci_dev *d)
346{
347 __hci_dev_put(d);
348 module_put(d->owner);
349}
350
351static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
352{
353 atomic_inc(&d->refcnt);
354 return d;
355}
356
357static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
358{
359 if (try_module_get(d->owner))
360 return __hci_dev_hold(d);
361 return NULL;
362}
363
364#define hci_dev_lock(d) spin_lock(&d->lock)
365#define hci_dev_unlock(d) spin_unlock(&d->lock)
366#define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
367#define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
368
369struct hci_dev *hci_dev_get(int index);
370struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
371
372struct hci_dev *hci_alloc_dev(void);
373void hci_free_dev(struct hci_dev *hdev);
374int hci_register_dev(struct hci_dev *hdev);
375int hci_unregister_dev(struct hci_dev *hdev);
376int hci_suspend_dev(struct hci_dev *hdev);
377int hci_resume_dev(struct hci_dev *hdev);
378int hci_dev_open(__u16 dev);
379int hci_dev_close(__u16 dev);
380int hci_dev_reset(__u16 dev);
381int hci_dev_reset_stat(__u16 dev);
382int hci_dev_cmd(unsigned int cmd, void __user *arg);
383int hci_get_dev_list(void __user *arg);
384int hci_get_dev_info(void __user *arg);
385int hci_get_conn_list(void __user *arg);
386int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
387int hci_inquiry(void __user *arg);
388
389void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
390
391/* Receive frame from HCI drivers */
392static inline int hci_recv_frame(struct sk_buff *skb)
393{
394 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
395 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
396 && !test_bit(HCI_INIT, &hdev->flags))) {
397 kfree_skb(skb);
398 return -ENXIO;
399 }
400
401 /* Incomming skb */
402 bt_cb(skb)->incoming = 1;
403
404 /* Time stamp */
a61bbcf2 405 __net_timestamp(skb);
1da177e4
LT		 406
407 /* Queue frame for rx task */
408 skb_queue_tail(&hdev->rx_q, skb);
409 hci_sched_rx(hdev);
410 return 0;
411}
412
413int hci_register_sysfs(struct hci_dev *hdev);
414void hci_unregister_sysfs(struct hci_dev *hdev);
415
416#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->class_dev.dev = (pdev))
417
418/* ----- LMP capabilities ----- */
04837f64
MH		 419#define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
420#define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
421#define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
422#define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
1da177e4
LT		 423
424/* ----- HCI protocols ----- */
425struct hci_proto {
426 char *name;
427 unsigned int id;
428 unsigned long flags;
429
430 void *priv;
431
432 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
433 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
434 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
435 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
436 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
437 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
438 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
439};
440
441static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
442{
443 register struct hci_proto *hp;
444 int mask = 0;
445
446 hp = hci_proto[HCI_PROTO_L2CAP];
447 if (hp && hp->connect_ind)
448 mask |= hp->connect_ind(hdev, bdaddr, type);
449
450 hp = hci_proto[HCI_PROTO_SCO];
451 if (hp && hp->connect_ind)
452 mask |= hp->connect_ind(hdev, bdaddr, type);
453
454 return mask;
455}
456
457static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
458{
459 register struct hci_proto *hp;
460
461 hp = hci_proto[HCI_PROTO_L2CAP];
462 if (hp && hp->connect_cfm)
463 hp->connect_cfm(conn, status);
464
465 hp = hci_proto[HCI_PROTO_SCO];
466 if (hp && hp->connect_cfm)
467 hp->connect_cfm(conn, status);
468}
469
470static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
471{
472 register struct hci_proto *hp;
473
474 hp = hci_proto[HCI_PROTO_L2CAP];
475 if (hp && hp->disconn_ind)
476 hp->disconn_ind(conn, reason);
477
478 hp = hci_proto[HCI_PROTO_SCO];
479 if (hp && hp->disconn_ind)
480 hp->disconn_ind(conn, reason);
481}
482
483static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
484{
485 register struct hci_proto *hp;
486
487 hp = hci_proto[HCI_PROTO_L2CAP];
488 if (hp && hp->auth_cfm)
489 hp->auth_cfm(conn, status);
490
491 hp = hci_proto[HCI_PROTO_SCO];
492 if (hp && hp->auth_cfm)
493 hp->auth_cfm(conn, status);
494}
495
496static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
497{
498 register struct hci_proto *hp;
499
500 hp = hci_proto[HCI_PROTO_L2CAP];
501 if (hp && hp->encrypt_cfm)
502 hp->encrypt_cfm(conn, status);
503
504 hp = hci_proto[HCI_PROTO_SCO];
505 if (hp && hp->encrypt_cfm)
506 hp->encrypt_cfm(conn, status);
507}
508
509int hci_register_proto(struct hci_proto *hproto);
510int hci_unregister_proto(struct hci_proto *hproto);
511
512/* ----- HCI callbacks ----- */
513struct hci_cb {
514 struct list_head list;
515
516 char *name;
517
518 void (*auth_cfm) (struct hci_conn *conn, __u8 status);
519 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
520 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
521 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
522};
523
524static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
525{
526 struct list_head *p;
527
528 hci_proto_auth_cfm(conn, status);
529
530 read_lock_bh(&hci_cb_list_lock);
531 list_for_each(p, &hci_cb_list) {
532 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
533 if (cb->auth_cfm)
534 cb->auth_cfm(conn, status);
535 }
536 read_unlock_bh(&hci_cb_list_lock);
537}
538
539static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
540{
541 struct list_head *p;
542
543 hci_proto_encrypt_cfm(conn, status);
544
545 read_lock_bh(&hci_cb_list_lock);
546 list_for_each(p, &hci_cb_list) {
547 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
548 if (cb->encrypt_cfm)
549 cb->encrypt_cfm(conn, status, encrypt);
550 }
551 read_unlock_bh(&hci_cb_list_lock);
552}
553
554static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
555{
556 struct list_head *p;
557
558 read_lock_bh(&hci_cb_list_lock);
559 list_for_each(p, &hci_cb_list) {
560 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
561 if (cb->key_change_cfm)
562 cb->key_change_cfm(conn, status);
563 }
564 read_unlock_bh(&hci_cb_list_lock);
565}
566
567static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
568{
569 struct list_head *p;
570
571 read_lock_bh(&hci_cb_list_lock);
572 list_for_each(p, &hci_cb_list) {
573 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
574 if (cb->role_switch_cfm)
575 cb->role_switch_cfm(conn, status, role);
576 }
577 read_unlock_bh(&hci_cb_list_lock);
578}
579
580int hci_register_cb(struct hci_cb *hcb);
581int hci_unregister_cb(struct hci_cb *hcb);
582
583int hci_register_notifier(struct notifier_block *nb);
584int hci_unregister_notifier(struct notifier_block *nb);
585
586int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
587int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
588int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
589
590void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
591
592void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
593
594/* ----- HCI Sockets ----- */
595void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
596
597/* HCI info for socket */
598#define hci_pi(sk) ((struct hci_pinfo *) sk)
599
600struct hci_pinfo {
601 struct bt_sock bt;
602 struct hci_dev *hdev;
603 struct hci_filter filter;
604 __u32 cmsg_mask;
605};
606
607/* HCI security filter */
608#define HCI_SFLT_MAX_OGF 5
609
610struct hci_sec_filter {
611 __u32 type_mask;
612 __u32 event_mask[2];
613 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
614};
615
616/* ----- HCI requests ----- */
617#define HCI_REQ_DONE 0
618#define HCI_REQ_PEND 1
619#define HCI_REQ_CANCELED 2
620
621#define hci_req_lock(d) down(&d->req_lock)
622#define hci_req_unlock(d) up(&d->req_lock)
623
624void hci_req_complete(struct hci_dev *hdev, int result);
625
626#endif /* __HCI_CORE_H */
kernel source for telekom puls (alcatel/mediatek)