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.c 22 * 23 * Description: Contains BTE core stack initialization and shutdown code 24 * 25 ******************************************************************************/ 26 27 #define LOG_TAG "bt_main" 28 29 #include <assert.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_hci_bdroid.h" 39 #include "bt_utils.h" 40 #include "bta_api.h" 41 #include "btcore/include/module.h" 42 #include "bte.h" 43 #include "btif_common.h" 44 #include "btsnoop.h" 45 #include "btu.h" 46 #include "bt_common.h" 47 #include "device/include/interop.h" 48 #include "hci_layer.h" 49 #include "osi/include/alarm.h" 50 #include "osi/include/fixed_queue.h" 51 #include "osi/include/future.h" 52 #include "osi/include/hash_functions.h" 53 #include "osi/include/hash_map.h" 54 #include "osi/include/log.h" 55 #include "osi/include/osi.h" 56 #include "osi/include/thread.h" 57 #include "stack_config.h" 58 59 /******************************************************************************* 60 ** Constants & Macros 61 *******************************************************************************/ 62 63 /* Run-time configuration file for BLE*/ 64 #ifndef BTE_BLE_STACK_CONF_FILE 65 // TODO(armansito): Find a better way than searching by a hardcoded path. 66 #if defined(OS_GENERIC) 67 #define BTE_BLE_STACK_CONF_FILE "ble_stack.conf" 68 #else // !defined(OS_GENERIC) 69 #define BTE_BLE_STACK_CONF_FILE "/etc/bluetooth/ble_stack.conf" 70 #endif // defined(OS_GENERIC) 71 #endif // BT_BLE_STACK_CONF_FILE 72 73 /****************************************************************************** 74 ** Variables 75 ******************************************************************************/ 76 77 /******************************************************************************* 78 ** Static variables 79 *******************************************************************************/ 80 static const hci_t *hci; 81 82 /******************************************************************************* 83 ** Static functions 84 *******************************************************************************/ 85 86 /******************************************************************************* 87 ** Externs 88 *******************************************************************************/ 89 fixed_queue_t *btu_hci_msg_queue; 90 91 /****************************************************************************** 92 ** 93 ** Function bte_main_boot_entry 94 ** 95 ** Description BTE MAIN API - Entry point for BTE chip/stack initialization 96 ** 97 ** Returns None 98 ** 99 ******************************************************************************/ 100 void bte_main_boot_entry(void) 101 { 102 module_init(get_module(INTEROP_MODULE)); 103 104 hci = hci_layer_get_interface(); 105 if (!hci) 106 LOG_ERROR(LOG_TAG, "%s could not get hci layer interface.", __func__); 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 { 131 data_dispatcher_register_default(hci_layer_get_interface()->event_dispatcher, 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 { 154 APPL_TRACE_DEBUG("%s", __FUNCTION__); 155 156 module_start_up(get_module(BTSNOOP_MODULE)); 157 module_start_up(get_module(HCI_MODULE)); 158 159 BTU_StartUp(); 160 } 161 162 /****************************************************************************** 163 ** 164 ** Function bte_main_disable 165 ** 166 ** Description BTE MAIN API - Destroys all the BTE tasks. Should be called 167 ** part of the Bluetooth stack disable sequence 168 ** 169 ** Returns None 170 ** 171 ******************************************************************************/ 172 void bte_main_disable(void) 173 { 174 APPL_TRACE_DEBUG("%s", __FUNCTION__); 175 176 module_shut_down(get_module(HCI_MODULE)); 177 module_shut_down(get_module(BTSNOOP_MODULE)); 178 179 BTU_ShutDown(); 180 } 181 182 /****************************************************************************** 183 ** 184 ** Function bte_main_postload_cfg 185 ** 186 ** Description BTE MAIN API - Stack postload configuration 187 ** 188 ** Returns None 189 ** 190 ******************************************************************************/ 191 void bte_main_postload_cfg(void) 192 { 193 hci->do_postload(); 194 } 195 196 #if (defined(HCILP_INCLUDED) && HCILP_INCLUDED == TRUE) 197 /****************************************************************************** 198 ** 199 ** Function bte_main_enable_lpm 200 ** 201 ** Description BTE MAIN API - Enable/Disable low power mode operation 202 ** 203 ** Returns None 204 ** 205 ******************************************************************************/ 206 void bte_main_enable_lpm(BOOLEAN enable) 207 { 208 hci->send_low_power_command(enable ? LPM_ENABLE : LPM_DISABLE); 209 } 210 211 /****************************************************************************** 212 ** 213 ** Function bte_main_lpm_allow_bt_device_sleep 214 ** 215 ** Description BTE MAIN API - Allow the BT controller to go to sleep 216 ** 217 ** Returns None 218 ** 219 ******************************************************************************/ 220 void bte_main_lpm_allow_bt_device_sleep() 221 { 222 hci->send_low_power_command(LPM_WAKE_DEASSERT); 223 } 224 225 /****************************************************************************** 226 ** 227 ** Function bte_main_lpm_wake_bt_device 228 ** 229 ** Description BTE MAIN API - Wake BT controller up if it is in sleep mode 230 ** 231 ** Returns None 232 ** 233 ******************************************************************************/ 234 void bte_main_lpm_wake_bt_device() 235 { 236 hci->send_low_power_command(LPM_WAKE_ASSERT); 237 } 238 #endif // HCILP_INCLUDED 239 240 /****************************************************************************** 241 ** 242 ** Function bte_main_hci_send 243 ** 244 ** Description BTE MAIN API - This function is called by the upper stack to 245 ** send an HCI message. The function displays a protocol trace 246 ** message (if enabled), and then calls the 'transmit' function 247 ** associated with the currently selected HCI transport 248 ** 249 ** Returns None 250 ** 251 ******************************************************************************/ 252 void bte_main_hci_send (BT_HDR *p_msg, UINT16 event) 253 { 254 UINT16 sub_event = event & BT_SUB_EVT_MASK; /* local controller ID */ 255 256 p_msg->event = event; 257 258 259 if((sub_event == LOCAL_BR_EDR_CONTROLLER_ID) || \ 260 (sub_event == LOCAL_BLE_CONTROLLER_ID)) 261 { 262 hci->transmit_downward(event, p_msg); 263 } 264 else 265 { 266 APPL_TRACE_ERROR("Invalid Controller ID. Discarding message."); 267 osi_free(p_msg); 268 } 269 } 270
