1 /******************************************************************************
2 *
3 * Copyright 2002-2012 Broadcom Corporation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18
19 /******************************************************************************
20 *
21 * This file contains the definition of the btm control block.
22 *
23 ******************************************************************************/
24
25 #include <string.h>
26 #include "bt_target.h"
27 #include "bt_types.h"
28 #include "btm_int.h"
29 #include "stack_config.h"
30
31 /* Global BTM control block structure
32 */
33 tBTM_CB btm_cb;
34
35 /*******************************************************************************
36 *
37 * Function btm_init
38 *
39 * Description This function is called at BTM startup to allocate the
40 * control block (if using dynamic memory), and initializes the
41 * tracing level. It then initializes the various components
42 * of btm.
43 *
44 * Returns void
45 *
46 ******************************************************************************/
btm_init(void)47 void btm_init(void) {
48 /* All fields are cleared; nonzero fields are reinitialized in appropriate
49 * function */
50 memset(&btm_cb, 0, sizeof(tBTM_CB));
51 btm_cb.page_queue = fixed_queue_new(SIZE_MAX);
52 btm_cb.sec_pending_q = fixed_queue_new(SIZE_MAX);
53 btm_cb.sec_collision_timer = alarm_new("btm.sec_collision_timer");
54 btm_cb.pairing_timer = alarm_new("btm.pairing_timer");
55
56 #if defined(BTM_INITIAL_TRACE_LEVEL)
57 btm_cb.trace_level = BTM_INITIAL_TRACE_LEVEL;
58 #else
59 btm_cb.trace_level = BT_TRACE_LEVEL_NONE; /* No traces */
60 #endif
61 /* Initialize BTM component structures */
62 btm_inq_db_init(); /* Inquiry Database and Structures */
63 btm_acl_init(); /* ACL Database and Structures */
64 /* Security Manager Database and Structures */
65 if (stack_config_get_interface()->get_pts_secure_only_mode())
66 btm_sec_init(BTM_SEC_MODE_SC);
67 else
68 btm_sec_init(BTM_SEC_MODE_SP);
69 btm_sco_init(); /* SCO Database and Structures (If included) */
70
71 btm_cb.sec_dev_rec = list_new(osi_free);
72
73 btm_dev_init(); /* Device Manager Structures & HCI_Reset */
74 }
75
76 /** This function is called to free dynamic memory and system resource allocated by btm_init */
btm_free(void)77 void btm_free(void) {
78 fixed_queue_free(btm_cb.page_queue, NULL);
79 btm_cb.page_queue = NULL;
80
81 fixed_queue_free(btm_cb.sec_pending_q, NULL);
82 btm_cb.sec_pending_q = NULL;
83
84 list_node_t* end = list_end(btm_cb.sec_dev_rec);
85 list_node_t* node = list_begin(btm_cb.sec_dev_rec);
86 while (node != end) {
87 tBTM_SEC_DEV_REC* p_dev_rec = static_cast<tBTM_SEC_DEV_REC*>(list_node(node));
88
89 // we do list_remove in, must grab next before removing
90 node = list_next(node);
91 wipe_secrets_and_remove(p_dev_rec);
92 }
93
94 list_free(btm_cb.sec_dev_rec);
95 btm_cb.sec_dev_rec = NULL;
96
97 alarm_free(btm_cb.sec_collision_timer);
98 btm_cb.sec_collision_timer = NULL;
99
100 alarm_free(btm_cb.pairing_timer);
101 btm_cb.pairing_timer = NULL;
102 }
103