1 /******************************************************************************
2 *
3 * Copyright (C) 2000-2012 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 #define LOG_TAG "bt_task"
20
21 #include <base/logging.h>
22 #include <pthread.h>
23 #include <string.h>
24
25 #include "bt_target.h"
26 #include "btm_int.h"
27 #include "btu.h"
28 #include "device/include/controller.h"
29 #include "gatt_api.h"
30 #include "gatt_int.h"
31 #include "l2c_int.h"
32 #include "osi/include/alarm.h"
33 #include "osi/include/fixed_queue.h"
34 #include "osi/include/log.h"
35 #include "osi/include/thread.h"
36 #include "sdpint.h"
37 #include "smp_int.h"
38
39 // RT priority for audio-related tasks
40 #define BTU_TASK_RT_PRIORITY 1
41
42 // Communication queue from hci thread to bt_workqueue.
43 extern fixed_queue_t* btu_hci_msg_queue;
44
45 thread_t* bt_workqueue_thread;
46 static const char* BT_WORKQUEUE_NAME = "bt_workqueue";
47
48 extern void PLATFORM_DisableHciTransport(uint8_t bDisable);
49
50 void btu_task_start_up(void* context);
51 void btu_task_shut_down(void* context);
52
53 /*****************************************************************************
54 *
55 * Function btu_init_core
56 *
57 * Description Initialize control block memory for each core component.
58 *
59 *
60 * Returns void
61 *
62 *****************************************************************************/
btu_init_core(void)63 void btu_init_core(void) {
64 /* Initialize the mandatory core stack components */
65 btm_init();
66
67 l2c_init();
68
69 sdp_init();
70
71 gatt_init();
72
73 SMP_Init();
74
75 btm_ble_init();
76 }
77
78 /*****************************************************************************
79 *
80 * Function btu_free_core
81 *
82 * Description Releases control block memory for each core component.
83 *
84 *
85 * Returns void
86 *
87 *****************************************************************************/
btu_free_core(void)88 void btu_free_core(void) {
89 /* Free the mandatory core stack components */
90 l2c_free();
91
92 sdp_free();
93
94 gatt_free();
95 }
96
97 /*****************************************************************************
98 *
99 * Function BTU_StartUp
100 *
101 * Description Initializes the BTU control block.
102 *
103 * NOTE: Must be called before creating any tasks
104 * (RPC, BTU, HCIT, APPL, etc.)
105 *
106 * Returns void
107 *
108 *****************************************************************************/
BTU_StartUp(void)109 void BTU_StartUp(void) {
110 btu_trace_level = HCI_INITIAL_TRACE_LEVEL;
111
112 bt_workqueue_thread = thread_new(BT_WORKQUEUE_NAME);
113 if (bt_workqueue_thread == NULL) goto error_exit;
114
115 thread_set_rt_priority(bt_workqueue_thread, BTU_TASK_RT_PRIORITY);
116
117 // Continue startup on bt workqueue thread.
118 thread_post(bt_workqueue_thread, btu_task_start_up, NULL);
119 return;
120
121 error_exit:;
122 LOG_ERROR(LOG_TAG, "%s Unable to allocate resources for bt_workqueue",
123 __func__);
124 BTU_ShutDown();
125 }
126
BTU_ShutDown(void)127 void BTU_ShutDown(void) {
128 btu_task_shut_down(NULL);
129
130
131 thread_free(bt_workqueue_thread);
132
133 bt_workqueue_thread = NULL;
134 }
135