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OVMS3-idf/components/bt/bluedroid/osi/alarm.c
Tian Hao e4f63819a1 component/bt : remove all GKI reference 
1. remove GKI(not use osi_free_and_reset)
2. modify mutex/semaphore to individual directory
3. set osi_malloc as malloc(previously use calloc)
4. change osi allocator debug osi_free
5. fix rebase of remove GKI
2017-08-23 15:29:30 +08:00

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/******************************************************************************
*
* Copyright (C) 2014 Google, Inc.
*
* 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.
*
******************************************************************************/
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include "bt_defs.h"
#include "bt_trace.h"
#include "alarm.h"
#include "allocator.h"
#include "list.h"
#include "thread.h"
#include "freertos/FreeRTOSConfig.h"
#include "freertos/xtensa_api.h"
#include "rom/ets_sys.h"
#include "btc_task.h"
#include "btc_alarm.h"
#include "mutex.h"
#include "time.h"
#define RTC_TIMER_TICKS_TO_MS(ticks) (((ticks/625)<<1) + (ticks-(ticks/625)*625)/312)
#define BT_ALARM_START_WAIT_TICKS 100
#define BT_ALARM_STOP_WAIT_TICKS 100
#define BT_ALARM_FREE_WAIT_TICKS 100
#define BT_ALARM_CHG_PERIOD_WAIT_TICKS 100
enum {
ALARM_STATE_IDLE,
ALARM_STATE_OPEN,
};
static osi_mutex_t alarm_mutex;
static int alarm_state;
static struct alarm_t alarm_cbs[ALARM_CBS_NUM];
static int alarm_free(osi_alarm_t *alarm);
int osi_alarm_create_mux(void)
{
if (alarm_state != ALARM_STATE_IDLE) {
LOG_WARN("%s, invalid state %d\n", __func__, alarm_state);
return -1;
}
osi_mutex_new(&alarm_mutex);
return 0;
}
int osi_alarm_delete_mux(void)
{
if (alarm_state != ALARM_STATE_IDLE) {
LOG_WARN("%s, invalid state %d\n", __func__, alarm_state);
return -1;
}
osi_mutex_free(&alarm_mutex);
return 0;
}
void osi_alarm_init(void)
{
assert(alarm_mutex != NULL);
osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
if (alarm_state != ALARM_STATE_IDLE) {
LOG_WARN("%s, invalid state %d\n", __func__, alarm_state);
goto end;
}
memset(alarm_cbs, 0x00, sizeof(alarm_cbs));
alarm_state = ALARM_STATE_OPEN;
end:
osi_mutex_unlock(&alarm_mutex);
}
void osi_alarm_deinit(void)
{
assert(alarm_mutex != NULL);
osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
if (alarm_state != ALARM_STATE_OPEN) {
LOG_WARN("%s, invalid state %d\n", __func__, alarm_state);
goto end;
}
for (int i = 0; i < ALARM_CBS_NUM; i++) {
if (alarm_cbs[i].alarm_hdl != NULL) {
alarm_free(&alarm_cbs[i]);
}
}
alarm_state = ALARM_STATE_IDLE;
end:
osi_mutex_unlock(&alarm_mutex);
}
static struct alarm_t *alarm_cbs_lookfor_available(void)
{
int i;
for (i = 0; i < ALARM_CBS_NUM; i++) {
if (alarm_cbs[i].alarm_hdl == NULL) { //available
LOG_DEBUG("%s %d %p\n", __func__, i, &alarm_cbs[i]);
return &alarm_cbs[i];
}
}
return NULL;
}
static void alarm_cb_handler(TimerHandle_t xTimer)
{
struct alarm_t *alarm;
if (!xTimer) {
LOG_ERROR("TimerName: NULL\n");
return;
}
alarm = pvTimerGetTimerID(xTimer);
LOG_DEBUG("TimerID %p, Name %s\n", alarm, pcTimerGetTimerName(xTimer));
btc_msg_t msg;
btc_alarm_args_t arg;
msg.sig = BTC_SIG_API_CALL;
msg.pid = BTC_PID_ALARM;
arg.cb = alarm->cb;
arg.cb_data = alarm->cb_data;
btc_transfer_context(&msg, &arg, sizeof(btc_alarm_args_t), NULL);
}
osi_alarm_t *osi_alarm_new(char *alarm_name, osi_alarm_callback_t callback, void *data, period_ms_t timer_expire)
{
assert(alarm_mutex != NULL);
struct alarm_t *timer_id = NULL;
osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
if (alarm_state != ALARM_STATE_OPEN) {
LOG_ERROR("%s, invalid state %d\n", __func__, alarm_state);
timer_id = NULL;
goto end;
}
timer_id = alarm_cbs_lookfor_available();
if (!timer_id) {
LOG_ERROR("%s alarm_cbs exhausted\n", __func__);
timer_id = NULL;
goto end;
}
if (timer_expire == 0) {
timer_expire = 1000;
}
TimerHandle_t t = xTimerCreate(alarm_name, timer_expire / portTICK_PERIOD_MS, pdFALSE, timer_id, alarm_cb_handler);
if (!t) {
LOG_ERROR("%s failed to create timer\n", __func__);
timer_id = NULL;
goto end;
}
timer_id->alarm_hdl = t;
timer_id->cb = callback;
timer_id->cb_data = data;
end:
osi_mutex_unlock(&alarm_mutex);
return timer_id;
}
static int alarm_free(osi_alarm_t *alarm)
{
if (!alarm || alarm->alarm_hdl == NULL) {
LOG_ERROR("%s null\n", __func__);
return -1;
}
if (xTimerDelete(alarm->alarm_hdl, BT_ALARM_FREE_WAIT_TICKS) != pdPASS) {
LOG_ERROR("%s alarm delete error\n", __func__);
return -2;
}
memset(alarm, 0, sizeof(osi_alarm_t));
return 0;
}
int osi_alarm_free(osi_alarm_t *alarm)
{
assert(alarm_mutex != NULL);
int ret = 0;
osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
if (alarm_state != ALARM_STATE_OPEN) {
LOG_ERROR("%s, invalid state %d\n", __func__, alarm_state);
ret = -3;
goto end;
}
alarm_free(alarm);
end:
osi_mutex_unlock(&alarm_mutex);
return ret;
}
int osi_alarm_set(osi_alarm_t *alarm, period_ms_t timeout)
{
assert(alarm_mutex != NULL);
int ret = 0;
osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
if (alarm_state != ALARM_STATE_OPEN) {
LOG_ERROR("%s, invalid state %d\n", __func__, alarm_state);
ret = -3;
goto end;
}
if (!alarm || alarm->alarm_hdl == NULL) {
LOG_ERROR("%s null\n", __func__);
ret = -1;
goto end;
}
if (xTimerChangePeriod(alarm->alarm_hdl, timeout / portTICK_PERIOD_MS, BT_ALARM_CHG_PERIOD_WAIT_TICKS) != pdPASS) {
LOG_ERROR("%s chg period error\n", __func__);
ret = -2;
goto end;
}
if (xTimerStart(alarm->alarm_hdl, BT_ALARM_START_WAIT_TICKS) != pdPASS) {
LOG_ERROR("%s start error\n", __func__);
ret = -2;
goto end;
}
end:
osi_mutex_unlock(&alarm_mutex);
return ret;
}
int osi_alarm_cancel(osi_alarm_t *alarm)
{
int ret = 0;
osi_mutex_lock(&alarm_mutex, OSI_MUTEX_MAX_TIMEOUT);
if (alarm_state != ALARM_STATE_OPEN) {
LOG_ERROR("%s, invalid state %d\n", __func__, alarm_state);
ret = -3;
goto end;
}
if (!alarm || alarm->alarm_hdl == NULL) {
LOG_ERROR("%s null\n", __func__);
ret = -1;
goto end;
}
if (xTimerStop(alarm->alarm_hdl, BT_ALARM_STOP_WAIT_TICKS) != pdPASS) {
LOG_ERROR("%s failed to stop timer\n", __func__);
ret = -2;
goto end;
}
end:
osi_mutex_unlock(&alarm_mutex);
return ret;
}
static uint32_t alarm_current_tick(void)
{
return xTaskGetTickCount();
}
// todo: this is not accurate
// max return value: 0xffffffff / 312 = 13765920 = 0xD20D20
period_ms_t osi_alarm_now(void)
{
return RTC_TIMER_TICKS_TO_MS((alarm_current_tick()));
}
period_ms_t osi_alarm_get_remaining_ms(const osi_alarm_t *alarm)
{
/* TODO: use FreeRTOS timer.c implement ??? */
return 0xffffffff;
}
// pre-condition: 0 <= t1, t2 <= 0xD20D20
// return value: 0<= ret <=0XD20D20
period_ms_t osi_alarm_time_diff(period_ms_t t1, period_ms_t t2)
{
#define MAX_ALARM_TIME_MS (0xD20D20)
int32_t diff = (int32_t)(t1) - (int32_t)(t2);
if (diff < 0) {
diff += MAX_ALARM_TIME_MS;
}
return (period_ms_t)diff;
}
uint32_t osi_time_get_os_boottime_ms(void)
{
return RTC_TIMER_TICKS_TO_MS((alarm_current_tick()));
}
void osi_delay_ms(uint32_t ms)
{
vTaskDelay(ms / portTICK_PERIOD_MS);
}
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