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/******************************************************************************
*
* Copyright (C) 2009-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* Filename: bte_main.cc
*
* Description: Contains BTE core stack initialization and shutdown code
*
******************************************************************************/
#define LOG_TAG "bt_main"
#include <base/logging.h>
#include <base/threading/thread.h>
#include <fcntl.h>
#include <pthread.h>
#include <signal.h>
#include <stdlib.h>
#include <time.h>
#include <hardware/bluetooth.h>
#include <hardware/vendor.h>
#include "bt_common.h"
#include "bt_hci_bdroid.h"
#include "bt_utils.h"
#include "bta_api.h"
#include "btcore/include/module.h"
#include "bte.h"
#include "btif_common.h"
#include "btsnoop.h"
#include "btu.h"
#include "device/include/interop.h"
#include "device/include/profile_config.h"
#include "hci_layer.h"
#include "hcimsgs.h"
#include "osi/include/alarm.h"
#include "osi/include/fixed_queue.h"
#include "osi/include/future.h"
#include "osi/include/log.h"
#include "osi/include/osi.h"
#include "osi/include/thread.h"
#include "stack_config.h"
/*******************************************************************************
* Constants & Macros
******************************************************************************/
/* Run-time configuration file for BLE*/
#ifndef BTE_BLE_STACK_CONF_FILE
// TODO(armansito): Find a better way than searching by a hardcoded path.
#if defined(OS_GENERIC)
#define BTE_BLE_STACK_CONF_FILE "ble_stack.conf"
#else // !defined(OS_GENERIC)
#define BTE_BLE_STACK_CONF_FILE "/etc/bluetooth/ble_stack.conf"
#endif // defined(OS_GENERIC)
#endif // BT_BLE_STACK_CONF_FILE
/******************************************************************************
* Variables
*****************************************************************************/
/*******************************************************************************
* Static variables
******************************************************************************/
static const hci_t* hci;
/*******************************************************************************
* Externs
******************************************************************************/
extern void btu_hci_msg_process(BT_HDR* p_msg);
/*******************************************************************************
* Static functions
******************************************************************************/
/******************************************************************************
*
* Function post_to_hci_message_loop
*
* Description Post an HCI event to the hci message queue
*
* Returns None
*
*****************************************************************************/
void post_to_hci_message_loop(const base::Location& from_here,
BT_HDR* p_msg) {
base::MessageLoop* hci_message_loop = get_message_loop();
if (!hci_message_loop || !hci_message_loop->task_runner().get()) {
LOG_ERROR(LOG_TAG, "%s: HCI message loop not running, accessed from %s",
__func__, from_here.ToString().c_str());
return;
}
hci_message_loop->task_runner()->PostTask(
from_here, base::Bind(&btu_hci_msg_process, p_msg));
}
/******************************************************************************
*
* Function bte_main_boot_entry
*
* Description BTE MAIN API - Entry point for BTE chip/stack initialization
*
* Returns None
*
*****************************************************************************/
void bte_main_boot_entry(void) {
module_init(get_module(INTEROP_MODULE));
module_init(get_module(PROFILE_CONFIG_MODULE));
hci = hci_layer_get_interface();
if (!hci) {
LOG_ERROR(LOG_TAG, "%s could not get hci layer interface.", __func__);
return;
}
hci->set_data_cb(base::Bind(&post_to_hci_message_loop));
module_init(get_module(STACK_CONFIG_MODULE));
}
/******************************************************************************
*
* Function bte_main_cleanup
*
* Description BTE MAIN API - Cleanup code for BTE chip/stack
*
* Returns None
*
*****************************************************************************/
void bte_main_cleanup() {
module_clean_up(get_module(STACK_CONFIG_MODULE));
module_clean_up(get_module(INTEROP_MODULE));
module_clean_up(get_module(PROFILE_CONFIG_MODULE));
}
/******************************************************************************
*
* Function bte_main_enable
*
* Description BTE MAIN API - Creates all the BTE tasks. Should be called
* part of the Bluetooth stack enable sequence
*
* Returns None
*
*****************************************************************************/
void bte_main_enable() {
APPL_TRACE_DEBUG("%s", __func__);
module_start_up(get_module(BTSNOOP_MODULE));
if (!module_start_up(get_module(HCI_MODULE))) {
LOG_ERROR(LOG_TAG,
"%s HCI_MODULE failed to start, Killing the bluetooth process", __func__);
/* Killing the process to force a restart as part of fault tolerance */
kill(getpid(), SIGKILL);
}
BTU_StartUp();
}
/******************************************************************************
*
* Function bte_main_disable
*
* Description BTE MAIN API - Destroys all the BTE tasks. Should be called
* part of the Bluetooth stack disable sequence
*
* Returns None
*
*****************************************************************************/
void bte_main_disable(void) {
APPL_TRACE_DEBUG("%s", __func__);
module_shut_down(get_module(HCI_MODULE));
module_shut_down(get_module(BTSNOOP_MODULE));
BTU_ShutDown();
}
/******************************************************************************
*
* Function bte_main_hci_close
*
* Description BTE MAIN API - closes hci module
*
* Returns None
*
*****************************************************************************/
void bte_main_hci_close(void) {
APPL_TRACE_DEBUG("%s", __func__);
module_shut_down(get_module(HCI_MODULE));
}
/******************************************************************************
*
* Function bte_main_postload_cfg
*
* Description BTE MAIN API - Stack postload configuration
*
* Returns None
*
*****************************************************************************/
void bte_main_postload_cfg(void) {
// TODO(eisenbach): [HIDL] DEPRECATE?
}
/******************************************************************************
*
* Function bte_main_hci_send
*
* Description BTE MAIN API - This function is called by the upper stack to
* send an HCI message. The function displays a protocol trace
* message (if enabled), and then calls the 'transmit' function
* associated with the currently selected HCI transport
*
* Returns None
*
*****************************************************************************/
void bte_main_hci_send(BT_HDR* p_msg, uint16_t event) {
uint16_t sub_event = event & BT_SUB_EVT_MASK; /* local controller ID */
p_msg->event = event;
if ((sub_event == LOCAL_BR_EDR_CONTROLLER_ID) ||
(sub_event == LOCAL_BLE_CONTROLLER_ID)) {
hci->transmit_downward(event, p_msg);
} else {
APPL_TRACE_ERROR("Invalid Controller ID. Discarding message.");
osi_free(p_msg);
}
}
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