1 /****************************************************************************** 2 * 3 * Copyright (C) 2009-2012 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 * Filename: bte_main.cc 22 * 23 * Description: Contains BTE core stack initialization and shutdown code 24 * 25 ******************************************************************************/ 26 27 #define LOG_TAG "bt_main" 28 29 #include <base/logging.h> 30 #include <fcntl.h> 31 #include <pthread.h> 32 #include <signal.h> 33 #include <stdlib.h> 34 #include <time.h> 35 36 #include <hardware/bluetooth.h> 37 38 #include "bt_common.h" 39 #include "bt_hci_bdroid.h" 40 #include "bt_utils.h" 41 #include "bta_api.h" 42 #include "btcore/include/module.h" 43 #include "bte.h" 44 #include "btif_common.h" 45 #include "btsnoop.h" 46 #include "btu.h" 47 #include "device/include/interop.h" 48 #include "hci_layer.h" 49 #include "hcimsgs.h" 50 #include "osi/include/alarm.h" 51 #include "osi/include/fixed_queue.h" 52 #include "osi/include/future.h" 53 #include "osi/include/log.h" 54 #include "osi/include/osi.h" 55 #include "osi/include/thread.h" 56 #include "stack_config.h" 57 58 /******************************************************************************* 59 * Constants & Macros 60 ******************************************************************************/ 61 62 /* Run-time configuration file for BLE*/ 63 #ifndef BTE_BLE_STACK_CONF_FILE 64 // TODO(armansito): Find a better way than searching by a hardcoded path. 65 #if defined(OS_GENERIC) 66 #define BTE_BLE_STACK_CONF_FILE "ble_stack.conf" 67 #else // !defined(OS_GENERIC) 68 #define BTE_BLE_STACK_CONF_FILE "/etc/bluetooth/ble_stack.conf" 69 #endif // defined(OS_GENERIC) 70 #endif // BT_BLE_STACK_CONF_FILE 71 72 /****************************************************************************** 73 * Variables 74 *****************************************************************************/ 75 76 /******************************************************************************* 77 * Static variables 78 ******************************************************************************/ 79 static const hci_t* hci; 80 81 /******************************************************************************* 82 * Static functions 83 ******************************************************************************/ 84 85 /******************************************************************************* 86 * Externs 87 ******************************************************************************/ 88 fixed_queue_t* btu_hci_msg_queue; 89 90 /****************************************************************************** 91 * 92 * Function bte_main_boot_entry 93 * 94 * Description BTE MAIN API - Entry point for BTE chip/stack initialization 95 * 96 * Returns None 97 * 98 *****************************************************************************/ 99 void bte_main_boot_entry(void) { 100 module_init(get_module(INTEROP_MODULE)); 101 102 hci = hci_layer_get_interface(); 103 if (!hci) { 104 LOG_ERROR(LOG_TAG, "%s could not get hci layer interface.", __func__); 105 return; 106 } 107 108 btu_hci_msg_queue = fixed_queue_new(SIZE_MAX); 109 if (btu_hci_msg_queue == NULL) { 110 LOG_ERROR(LOG_TAG, "%s unable to allocate hci message queue.", __func__); 111 return; 112 } 113 114 data_dispatcher_register_default(hci->event_dispatcher, btu_hci_msg_queue); 115 hci->set_data_queue(btu_hci_msg_queue); 116 117 module_init(get_module(STACK_CONFIG_MODULE)); 118 } 119 120 /****************************************************************************** 121 * 122 * Function bte_main_cleanup 123 * 124 * Description BTE MAIN API - Cleanup code for BTE chip/stack 125 * 126 * Returns None 127 * 128 *****************************************************************************/ 129 void bte_main_cleanup() { 130 data_dispatcher_register_default(hci_layer_get_interface()->event_dispatcher, 131 NULL); 132 hci->set_data_queue(NULL); 133 fixed_queue_free(btu_hci_msg_queue, NULL); 134 135 btu_hci_msg_queue = NULL; 136 137 module_clean_up(get_module(STACK_CONFIG_MODULE)); 138 139 module_clean_up(get_module(INTEROP_MODULE)); 140 } 141 142 /****************************************************************************** 143 * 144 * Function bte_main_enable 145 * 146 * Description BTE MAIN API - Creates all the BTE tasks. Should be called 147 * part of the Bluetooth stack enable sequence 148 * 149 * Returns None 150 * 151 *****************************************************************************/ 152 void bte_main_enable() { 153 APPL_TRACE_DEBUG("%s", __func__); 154 155 module_start_up(get_module(BTSNOOP_MODULE)); 156 module_start_up(get_module(HCI_MODULE)); 157 158 BTU_StartUp(); 159 } 160 161 /****************************************************************************** 162 * 163 * Function bte_main_disable 164 * 165 * Description BTE MAIN API - Destroys all the BTE tasks. Should be called 166 * part of the Bluetooth stack disable sequence 167 * 168 * Returns None 169 * 170 *****************************************************************************/ 171 void bte_main_disable(void) { 172 APPL_TRACE_DEBUG("%s", __func__); 173 174 module_shut_down(get_module(HCI_MODULE)); 175 module_shut_down(get_module(BTSNOOP_MODULE)); 176 177 BTU_ShutDown(); 178 } 179 180 /****************************************************************************** 181 * 182 * Function bte_main_postload_cfg 183 * 184 * Description BTE MAIN API - Stack postload configuration 185 * 186 * Returns None 187 * 188 *****************************************************************************/ 189 void bte_main_postload_cfg(void) { 190 // TODO(eisenbach): [HIDL] DEPRECATE? 191 } 192 193 /****************************************************************************** 194 * 195 * Function bte_main_hci_send 196 * 197 * Description BTE MAIN API - This function is called by the upper stack to 198 * send an HCI message. The function displays a protocol trace 199 * message (if enabled), and then calls the 'transmit' function 200 * associated with the currently selected HCI transport 201 * 202 * Returns None 203 * 204 *****************************************************************************/ 205 void bte_main_hci_send(BT_HDR* p_msg, uint16_t event) { 206 uint16_t sub_event = event & BT_SUB_EVT_MASK; /* local controller ID */ 207 208 p_msg->event = event; 209 210 if ((sub_event == LOCAL_BR_EDR_CONTROLLER_ID) || 211 (sub_event == LOCAL_BLE_CONTROLLER_ID)) { 212 hci->transmit_downward(event, p_msg); 213 } else { 214 APPL_TRACE_ERROR("Invalid Controller ID. Discarding message."); 215 osi_free(p_msg); 216 } 217 } 218
