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OVMS3-idf/components/bt/bluedroid/btif/btif_core.c
wangmengyang 0f711963d7 component/bt: implement non-volatile memory access module for link key storage 
1. btif_storage module is ported
2. update controller library that moves functions called in ISRs to IRAM
2017-01-19 17:11:01 +08:00

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/******************************************************************************
*
* Copyright (C) 2014 The Android Open Source Project
* 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: btif_core.c
*
* Description: Contains core functionality related to interfacing between
* Bluetooth HAL and BTE core stack.
*
***********************************************************************************/
#include <ctype.h>
// #include <cutils/properties.h>
// #include <dirent.h>
// #include <fcntl.h>
// #include <hardware/bluetooth.h>
#include <stdlib.h>
#include <string.h>
// #include <sys/stat.h>
// #include <sys/types.h>
#define LOG_TAG "bt_btif_core"
// #include "btcore/include/bdaddr.h"
#include "bdaddr.h"
// #include "bt_utils.h"
#include "bta_api.h"
#include "bte.h"
#include "btif_api.h"
// #include "btif_av.h"
// #include "btif_config.h"
// #include "btif_pan.h"
// #include "btif_profile_queue.h"
// #include "btif_config.h"
// #include "btif_sock.h"
// #include "btif_storage.h"
#include "btif_util.h"
#include "btu.h"
#include "controller.h"
#include "fixed_queue.h"
#include "future.h"
#include "gki.h"
#include "osi.h"
// #include "osi/include/log.h"
#include "stack_manager.h"
#include "thread.h"
#include "btif_common.h"
#include "btif_dm.h"
/************************************************************************************
** Constants & Macros
************************************************************************************/
/************************************************************************************
** Local type definitions
************************************************************************************/
/************************************************************************************
** Static variables
************************************************************************************/
static tBTA_SERVICE_MASK btif_enabled_services = 0;
static fixed_queue_t *btif_msg_queue = NULL;
static xTaskHandle xBtifTaskHandle = NULL;
/************************************************************************************
** Static functions
************************************************************************************/
/* sends message to btif task */
static void btif_sendmsg(void *p_msg);
static void btif_thread_post(uint32_t sig);
/************************************************************************************
** Externs
************************************************************************************/
static fixed_queue_t *xBtifQueue = NULL;
/** TODO: Move these to _common.h */
void bte_main_boot_entry(void *);
void bte_main_disable(void);
void bte_main_shutdown(void);
void btif_dm_execute_service_request(UINT16 event, char *p_param);
/*******************************************************************************
**
** Function btif_context_switched
**
** Description Callback used to execute transferred context callback
**
** p_msg : message to be executed in btif context
**
** Returns void
**
*******************************************************************************/
static void btif_context_switched(void *p_msg)
{
BTIF_TRACE_VERBOSE("btif_context_switched");
tBTIF_CONTEXT_SWITCH_CBACK *p = (tBTIF_CONTEXT_SWITCH_CBACK *) p_msg;
/* each callback knows how to parse the data */
if (p->p_cb) {
p->p_cb(p->event, p->p_param);
}
}
/*******************************************************************************
**
** Function btif_transfer_context
**
** Description This function switches context to btif task
**
** p_cback : callback used to process message in btif context
** event : event id of message
** p_params : parameter area passed to callback (copied)
** param_len : length of parameter area
** p_copy_cback : If set this function will be invoked for deep copy
**
** Returns void
**
*******************************************************************************/
bt_status_t btif_transfer_context (tBTIF_CBACK *p_cback, UINT16 event, char *p_params, int param_len, tBTIF_COPY_CBACK *p_copy_cback)
{
tBTIF_CONTEXT_SWITCH_CBACK *p_msg;
BTIF_TRACE_VERBOSE("btif_transfer_context event %d, len %d", event, param_len);
/* allocate and send message that will be executed in btif context */
if ((p_msg = (tBTIF_CONTEXT_SWITCH_CBACK *) GKI_getbuf(sizeof(tBTIF_CONTEXT_SWITCH_CBACK) + param_len)) != NULL) {
p_msg->hdr.event = BT_EVT_CONTEXT_SWITCH_EVT; /* internal event */
p_msg->p_cb = p_cback;
p_msg->event = event; /* callback event */
/* check if caller has provided a copy callback to do the deep copy */
if (p_copy_cback) {
p_copy_cback(event, p_msg->p_param, p_params);
} else if (p_params) {
memcpy(p_msg->p_param, p_params, param_len); /* callback parameter data */
}
btif_sendmsg(p_msg);
return BT_STATUS_SUCCESS;
} else {
/* let caller deal with a failed allocation */
return BT_STATUS_NOMEM;
}
}
int btif_is_enabled(void)
{
return (stack_manager_is_stack_running());
}
void btif_init_ok(void)
{
BTIF_TRACE_DEBUG("btif_task: received trigger stack init event");
future_ready(stack_manager_get_hack_future(), FUTURE_SUCCESS);
}
/*******************************************************************************
**
** Function btif_enable_bluetooth_evt
**
** Description Event indicating bluetooth enable is completed
** Notifies HAL user with updated adapter state
**
** Returns void
**
*******************************************************************************/
void btif_enable_bluetooth_evt(tBTA_STATUS status)
{
if (status == BTA_SUCCESS) {
future_ready(stack_manager_get_hack_future(), FUTURE_SUCCESS);
} else {
future_ready(stack_manager_get_hack_future(), FUTURE_FAIL);
}
}
/*******************************************************************************
**
** Function btif_disable_bluetooth_evt
**
** Description Event notifying BT disable is now complete.
** Terminates main stack tasks and notifies HAL
** user with updated BT state.
**
** Returns void
**
*******************************************************************************/
void btif_disable_bluetooth_evt(void)
{
BTIF_TRACE_DEBUG("%s", __FUNCTION__);
/* callback to HAL */
future_ready(stack_manager_get_hack_future(), FUTURE_SUCCESS);
}
/*******************************************************************************
**
** Function btif_task
**
** Description BTIF task handler managing all messages being passed
** Bluetooth HAL and BTA.
**
** Returns void
**
*******************************************************************************/
static void bt_jni_msg_ready(fixed_queue_t *queue)
{
BT_HDR *p_msg;
while (!fixed_queue_is_empty(queue)) {
p_msg = (BT_HDR *)fixed_queue_dequeue(queue);
BTIF_TRACE_VERBOSE("btif task fetched event %x", p_msg->event);
switch (p_msg->event) {
case BT_EVT_CONTEXT_SWITCH_EVT:
btif_context_switched(p_msg);
break;
default:
BTIF_TRACE_ERROR("unhandled btif event (%d)", p_msg->event & BT_EVT_MASK); break;
}
GKI_freebuf(p_msg);
}
}
/*******************************************************************************
**
** Function btif_sendmsg
**
** Description Sends msg to BTIF task
**
** Returns void
**
*******************************************************************************/
void btif_sendmsg(void *p_msg)
{
fixed_queue_enqueue(btif_msg_queue, p_msg);
btif_thread_post(SIG_BTIF_WORK);
}
static void btif_thread_post(uint32_t sig)
{
BtTaskEvt_t *evt = (BtTaskEvt_t *)osi_malloc(sizeof(BtTaskEvt_t));
if (evt == NULL) {
return;
}
evt->sig = sig;
evt->par = 0;
if (xQueueSend(xBtifQueue, &evt, 10 / portTICK_RATE_MS) != pdTRUE) {
ets_printf("xBtifQueue failed\n");
}
}
/*****************************************************************************
**
** Function btif_task_thread_handler
**
** Description Process BTif Task Thread.
******************************************************************************/
void btif_task_thread_handler(void *arg)
{
BtTaskEvt_t *e;
for (;;) {
if (pdTRUE == xQueueReceive(xBtifQueue, &e, (portTickType)portMAX_DELAY)) {
if (e->sig == SIG_BTIF_WORK) {
fixed_queue_process(btif_msg_queue);
}
osi_free(e);
}
}
}
/*******************************************************************************
**
** Function btif_init_bluetooth
**
** Description Creates BTIF task and prepares BT scheduler for startup
**
** Returns bt_status_t
**
*******************************************************************************/
bt_status_t btif_init_bluetooth(void)
{
bte_main_boot_entry(btif_init_ok);
btif_msg_queue = fixed_queue_new(SIZE_MAX);
if (btif_msg_queue == NULL) {
goto error_exit;
}
xBtifQueue = xQueueCreate(60, sizeof(void *));
xTaskCreatePinnedToCore(btif_task_thread_handler, "BtifT", 2048+1024, NULL, configMAX_PRIORITIES - 1, &xBtifTaskHandle, 0);
fixed_queue_register_dequeue(btif_msg_queue, bt_jni_msg_ready);
return BT_STATUS_SUCCESS;
error_exit:;
btif_shutdown_bluetooth();
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function btif_enable_bluetooth
**
** Description Inititates shutdown of Bluetooth system.
** Any active links will be dropped and device entering
** non connectable/discoverable mode
**
** Returns void
**
*******************************************************************************/
bt_status_t btif_enable_bluetooth(void)
{
BTIF_TRACE_DEBUG("BTIF ENABLE BLUETOOTH");
BTA_EnableBluetooth(bte_dm_evt);
return BT_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function btif_disable_bluetooth
**
** Description Inititates shutdown of Bluetooth system.
** Any active links will be dropped and device entering
** non connectable/discoverable mode
**
** Returns void
**
*******************************************************************************/
bt_status_t btif_disable_bluetooth(void)
{
BTIF_TRACE_DEBUG("BTIF DISABLE BLUETOOTH");
// btif_dm_on_disable();
/* cleanup rfcomm & l2cap api */
// btif_sock_cleanup();
// btif_pan_cleanup();
BTA_DisableBluetooth();
return BT_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function btif_shutdown_bluetooth
**
** Description Finalizes BT scheduler shutdown and terminates BTIF
** task.
**
** Returns void
**
*******************************************************************************/
bt_status_t btif_shutdown_bluetooth(void)
{
BTIF_TRACE_DEBUG("%s", __FUNCTION__);
fixed_queue_unregister_dequeue(btif_msg_queue);
fixed_queue_free(btif_msg_queue, NULL);
btif_msg_queue = NULL;
vTaskDelete(xBtifTaskHandle);
xBtifTaskHandle = NULL;
vQueueDelete(xBtifQueue);
xBtifQueue = NULL;
bte_main_shutdown();
return BT_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function btif_get_enabled_services_mask
**
** Description Fetches currently enabled services
**
** Returns tBTA_SERVICE_MASK
**
*******************************************************************************/
tBTA_SERVICE_MASK btif_get_enabled_services_mask(void)
{
return btif_enabled_services;
}
/*******************************************************************************
**
** Function btif_enable_service
**
** Description Enables the service 'service_ID' to the service_mask.
** Upon BT enable, BTIF core shall invoke the BTA APIs to
** enable the profiles
**
** Returns bt_status_t
**
*******************************************************************************/
bt_status_t btif_enable_service(tBTA_SERVICE_ID service_id)
{
tBTA_SERVICE_ID *p_id = &service_id;
/* If BT is enabled, we need to switch to BTIF context and trigger the
* enable for that profile
*
* Otherwise, we just set the flag. On BT_Enable, the DM will trigger
* enable for the profiles that have been enabled */
btif_enabled_services |= (1 << service_id);
BTIF_TRACE_DEBUG("%s: current services:0x%x", __FUNCTION__, btif_enabled_services);
if (btif_is_enabled()) {
btif_transfer_context(btif_dm_execute_service_request,
BTIF_DM_ENABLE_SERVICE,
(char *)p_id, sizeof(tBTA_SERVICE_ID), NULL);
}
return BT_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function btif_disable_service
**
** Description Disables the service 'service_ID' to the service_mask.
** Upon BT disable, BTIF core shall invoke the BTA APIs to
** disable the profiles
**
** Returns bt_status_t
**
*******************************************************************************/
bt_status_t btif_disable_service(tBTA_SERVICE_ID service_id)
{
tBTA_SERVICE_ID *p_id = &service_id;
/* If BT is enabled, we need to switch to BTIF context and trigger the
* disable for that profile so that the appropriate uuid_property_changed will
* be triggerred. Otherwise, we just need to clear the service_id in the mask
*/
btif_enabled_services &= (tBTA_SERVICE_MASK)(~(1 << service_id));
BTIF_TRACE_DEBUG("%s: Current Services:0x%x", __FUNCTION__, btif_enabled_services);
if (btif_is_enabled()) {
btif_transfer_context(btif_dm_execute_service_request,
BTIF_DM_DISABLE_SERVICE,
(char *)p_id, sizeof(tBTA_SERVICE_ID), NULL);
}
return BT_STATUS_SUCCESS;
}
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