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 <assert.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 "dyn_mem.h" 30 #include "l2c_int.h" 31 #include "osi/include/alarm.h" 32 #include "osi/include/fixed_queue.h" 33 #include "osi/include/hash_functions.h" 34 #include "osi/include/hash_map.h" 35 #include "osi/include/log.h" 36 #include "osi/include/thread.h" 37 #include "sdpint.h" 38 39 #if (BLE_INCLUDED == TRUE) 40 #include "gatt_api.h" 41 #include "gatt_int.h" 42 #if SMP_INCLUDED == TRUE 43 #include "smp_int.h" 44 #endif 45 #endif 46 47 // Increase BTU task thread priority to avoid pre-emption 48 // of audio realated tasks. 49 #define BTU_TASK_THREAD_PRIORITY -19 50 51 extern fixed_queue_t *btif_msg_queue; 52 53 // Communication queue from bta thread to bt_workqueue. 54 fixed_queue_t *btu_bta_msg_queue; 55 56 // Communication queue from hci thread to bt_workqueue. 57 extern fixed_queue_t *btu_hci_msg_queue; 58 59 // General timer queue. 60 fixed_queue_t *btu_general_alarm_queue; 61 62 thread_t *bt_workqueue_thread; 63 static const char *BT_WORKQUEUE_NAME = "bt_workqueue"; 64 65 extern void PLATFORM_DisableHciTransport(UINT8 bDisable); 66 /***************************************************************************** 67 ** V A R I A B L E S * 68 ******************************************************************************/ 69 // TODO(cmanton) Move this out of this file 70 const BD_ADDR BT_BD_ANY = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 71 72 void btu_task_start_up(void *context); 73 void btu_task_shut_down(void *context); 74 75 /***************************************************************************** 76 ** 77 ** Function btu_init_core 78 ** 79 ** Description Initialize control block memory for each core component. 80 ** 81 ** 82 ** Returns void 83 ** 84 ******************************************************************************/ 85 void btu_init_core(void) 86 { 87 /* Initialize the mandatory core stack components */ 88 btm_init(); 89 90 l2c_init(); 91 92 sdp_init(); 93 94 #if BLE_INCLUDED == TRUE 95 gatt_init(); 96 #if (defined(SMP_INCLUDED) && SMP_INCLUDED == TRUE) 97 SMP_Init(); 98 #endif 99 btm_ble_init(); 100 #endif 101 } 102 103 /***************************************************************************** 104 ** 105 ** Function btu_free_core 106 ** 107 ** Description Releases control block memory for each core component. 108 ** 109 ** 110 ** Returns void 111 ** 112 ******************************************************************************/ 113 void btu_free_core(void) 114 { 115 /* Free the mandatory core stack components */ 116 l2c_free(); 117 118 #if BLE_INCLUDED == TRUE 119 gatt_free(); 120 #endif 121 } 122 123 /***************************************************************************** 124 ** 125 ** Function BTU_StartUp 126 ** 127 ** Description Initializes the BTU control block. 128 ** 129 ** NOTE: Must be called before creating any tasks 130 ** (RPC, BTU, HCIT, APPL, etc.) 131 ** 132 ** Returns void 133 ** 134 ******************************************************************************/ 135 void BTU_StartUp(void) 136 { 137 btu_trace_level = HCI_INITIAL_TRACE_LEVEL; 138 139 btu_bta_msg_queue = fixed_queue_new(SIZE_MAX); 140 if (btu_bta_msg_queue == NULL) 141 goto error_exit; 142 143 btu_general_alarm_queue = fixed_queue_new(SIZE_MAX); 144 if (btu_general_alarm_queue == NULL) 145 goto error_exit; 146 147 bt_workqueue_thread = thread_new(BT_WORKQUEUE_NAME); 148 if (bt_workqueue_thread == NULL) 149 goto error_exit; 150 151 thread_set_priority(bt_workqueue_thread, BTU_TASK_THREAD_PRIORITY); 152 153 // Continue startup on bt workqueue thread. 154 thread_post(bt_workqueue_thread, btu_task_start_up, NULL); 155 return; 156 157 error_exit:; 158 LOG_ERROR(LOG_TAG, "%s Unable to allocate resources for bt_workqueue", __func__); 159 BTU_ShutDown(); 160 } 161 162 void BTU_ShutDown(void) { 163 btu_task_shut_down(NULL); 164 165 fixed_queue_free(btu_bta_msg_queue, NULL); 166 btu_bta_msg_queue = NULL; 167 168 fixed_queue_free(btu_general_alarm_queue, NULL); 169 btu_general_alarm_queue = NULL; 170 171 thread_free(bt_workqueue_thread); 172 173 bt_workqueue_thread = NULL; 174 } 175
