sof/zephyr/include/rtos/task.h

114 lines
2.9 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright(c) 2016 Intel Corporation. All rights reserved.
*
* Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
*/
#ifndef __ZEPHYR_RTOS_TASK_H__
#define __ZEPHYR_RTOS_TASK_H__
#include <rtos/panic.h>
#include <sof/list.h>
#include <stdbool.h>
#include <stdint.h>
#include <rtos/kernel.h>
#include <sof/lib/perf_cnt.h>
struct comp_dev;
struct sof;
/** \brief Predefined LL task priorities. */
#define SOF_TASK_PRI_HIGH 0 /* priority level 0 - high */
#define SOF_TASK_PRI_MED 4 /* priority level 4 - medium */
#define SOF_TASK_PRI_LOW 9 /* priority level 9 - low */
/** \brief Predefined EDF task deadlines. */
#define SOF_TASK_DEADLINE_IDLE UINT64_MAX
#define SOF_TASK_DEADLINE_ALMOST_IDLE (SOF_TASK_DEADLINE_IDLE - 1)
#define SOF_TASK_DEADLINE_NOW 0
/** \brief Task counter initial value. */
#define SOF_TASK_SKIP_COUNT 0xFFFFu
/** \brief Task states. */
enum task_state {
SOF_TASK_STATE_INIT = 0,
SOF_TASK_STATE_QUEUED,
SOF_TASK_STATE_PENDING,
SOF_TASK_STATE_RUNNING,
SOF_TASK_STATE_PREEMPTED,
SOF_TASK_STATE_COMPLETED,
SOF_TASK_STATE_FREE,
SOF_TASK_STATE_CANCEL,
SOF_TASK_STATE_RESCHEDULE,
};
/** \brief Task operations. */
struct task_ops {
enum task_state (*run)(void *data); /**< task's main operation */
void (*complete)(void *data); /**< executed on completion */
uint64_t (*get_deadline)(void *data); /**< returns current deadline */
};
/** \brief Task used by schedulers. */
struct task {
uint64_t start; /**< start time in [ms] since now (LL only) */
const struct sof_uuid_entry *uid; /**< Uuid */
uint16_t type; /**< type of the task (LL or EDF) */
uint16_t priority; /**< priority of the task (used by LL) */
uint16_t core; /**< execution core */
uint16_t flags; /**< custom flags */
enum task_state state; /**< current state */
void *data; /**< custom data passed to all ops */
struct list_item list; /**< used by schedulers to hold tasks */
void *priv_data; /**< task private data */
struct task_ops ops; /**< task operations */
struct k_work_delayable z_delayed_work;
uint32_t cycles_sum;
uint32_t cycles_max;
uint32_t cycles_cnt;
#if CONFIG_PERFORMANCE_COUNTERS
struct perf_cnt_data pcd;
#endif
};
static inline bool task_is_active(struct task *task)
{
switch (task->state) {
case SOF_TASK_STATE_QUEUED:
case SOF_TASK_STATE_PENDING:
case SOF_TASK_STATE_RUNNING:
case SOF_TASK_STATE_PREEMPTED:
case SOF_TASK_STATE_RESCHEDULE:
return true;
default:
return false;
}
}
static inline enum task_state task_run(struct task *task)
{
assert(task->ops.run);
return task->ops.run(task->data);
}
static inline void task_complete(struct task *task)
{
if (task->ops.complete)
task->ops.complete(task->data);
}
static inline uint64_t task_get_deadline(struct task *task)
{
assert(task->ops.get_deadline);
return task->ops.get_deadline(task->data);
}
int task_main_start(struct sof *sof);
int start_complete(void);
#endif /* __ZEPHYR_RTOS_TASK_H__ */