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/*
* SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "esp_openthread_task_queue.h"
#include "esp_check.h"
#include "esp_err.h"
#include "esp_openthread_common_macro.h"
#include "esp_openthread_platform.h"
#include "esp_openthread_types.h"
#include "esp_vfs.h"
#include "esp_vfs_eventfd.h"
#include "freertos/FreeRTOS.h"
#include "freertos/portmacro.h"
#include "freertos/queue.h"
#include "openthread/tasklet.h"
static QueueHandle_t s_task_queue = NULL;
static int s_task_queue_event_fd = -1;
static const char *task_queue_workflow = "task_queue";
#define OT_TASK_QUEUE_SENDING_WAIT_TIME pdMS_TO_TICKS(100)
typedef struct {
esp_openthread_task_t task;
void *arg;
} task_storage_t;
esp_err_t esp_openthread_task_queue_init(const esp_openthread_platform_config_t *config)
{
s_task_queue_event_fd = eventfd(0, EFD_SUPPORT_ISR);
ESP_RETURN_ON_FALSE(s_task_queue_event_fd >= 0, ESP_FAIL, OT_PLAT_LOG_TAG,
"Failed to create OpenThread task queue event fd");
s_task_queue = xQueueCreate(config->port_config.task_queue_size, sizeof(task_storage_t));
ESP_RETURN_ON_FALSE(s_task_queue != NULL, ESP_ERR_NO_MEM, OT_PLAT_LOG_TAG,
"Failed to create OpenThread task queue");
return esp_openthread_platform_workflow_register(&esp_openthread_task_queue_update,
&esp_openthread_task_queue_process, task_queue_workflow);
}
void otTaskletsSignalPending(otInstance *aInstance)
{
uint64_t val = 1;
ssize_t ret;
ret = write(s_task_queue_event_fd, &val, sizeof(val));
assert(ret == sizeof(val));
}
esp_err_t IRAM_ATTR esp_openthread_task_queue_post(esp_openthread_task_t task, void *arg)
{
task_storage_t task_storage = {
.task = task,
.arg = arg,
};
uint64_t val = 1;
ssize_t ret;
BaseType_t task_woken = pdFALSE;
if (!xPortCanYield()) {
ESP_RETURN_ON_FALSE_ISR(xQueueSendFromISR(s_task_queue, &task_storage, &task_woken), ESP_FAIL, OT_PLAT_LOG_TAG,
"Failed to post task to OpenThread task queue");
} else {
ESP_RETURN_ON_FALSE(xQueueSend(s_task_queue, &task_storage, OT_TASK_QUEUE_SENDING_WAIT_TIME), ESP_FAIL, OT_PLAT_LOG_TAG,
"Failed to post task to OpenThread task queue");
}
ret = write(s_task_queue_event_fd, &val, sizeof(val));
assert(ret == sizeof(val));
if (task_woken) {
portYIELD_FROM_ISR_NO_ARG();
}
return ESP_OK;
}
void esp_openthread_task_queue_update(esp_openthread_mainloop_context_t *mainloop)
{
if (s_task_queue_event_fd >= 0) {
FD_SET(s_task_queue_event_fd, &mainloop->read_fds);
if (s_task_queue_event_fd > mainloop->max_fd) {
mainloop->max_fd = s_task_queue_event_fd;
}
}
}
esp_err_t esp_openthread_task_queue_process(otInstance *instance, const esp_openthread_mainloop_context_t *mainloop)
{
task_storage_t task_storage;
if (FD_ISSET(s_task_queue_event_fd, &mainloop->read_fds)) {
uint64_t val;
ssize_t ret = read(s_task_queue_event_fd, &val, sizeof(val));
assert(ret == sizeof(val));
}
ESP_RETURN_ON_FALSE(s_task_queue != NULL, ESP_ERR_INVALID_STATE, OT_PLAT_LOG_TAG,
"OpenThread task queue not initialized");
while (xQueueReceive(s_task_queue, &task_storage, 0) == pdTRUE) {
task_storage.task(task_storage.arg);
}
return ESP_OK;
}
esp_err_t esp_openthread_task_queue_deinit(void)
{
if (s_task_queue) {
vQueueDelete(s_task_queue);
s_task_queue = NULL;
}
if (s_task_queue_event_fd >= 0) {
close(s_task_queue_event_fd);
s_task_queue_event_fd = -1;
}
esp_openthread_platform_workflow_unregister(task_queue_workflow);
return ESP_OK;
}
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