95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (c) 2015 MediaTek Inc.
|
|
*/
|
|
|
|
#include <linux/completion.h>
|
|
|
|
#ifndef _ENGINE_REQUESTS_H_
|
|
#define _ENGINE_REQUESTS_H_
|
|
|
|
#define MAX_REQUEST_SIZE_PER_ENGINE 4
|
|
#define MAX_FRAMES_PER_REQUEST 6
|
|
|
|
/* Regulation Options */
|
|
#define FRAME_BASE_REGULATION 0
|
|
#define REQUEST_BASE_REGULATION 1
|
|
#define REQUEST_REGULATION FRAME_BASE_REGULATION
|
|
|
|
enum FRAME_STATUS_ENUM {
|
|
FRAME_STATUS_EMPTY, /* 0 */
|
|
FRAME_STATUS_ENQUE, /* 1 */
|
|
FRAME_STATUS_RUNNING, /* 2 */
|
|
FRAME_STATUS_FINISHED, /* 3 */
|
|
FRAME_STATUS_TOTAL
|
|
};
|
|
|
|
enum REQUEST_STATE_ENUM {
|
|
REQUEST_STATE_EMPTY, /* 0 */
|
|
REQUEST_STATE_PENDING, /* 1 */
|
|
REQUEST_STATE_RUNNING, /* 2 */
|
|
REQUEST_STATE_FINISHED, /* 3 */
|
|
REQUEST_STATE_TOTAL
|
|
};
|
|
|
|
struct ring_ctrl {
|
|
unsigned int wcnt; /* enque */
|
|
unsigned int rcnt; /* deque */
|
|
unsigned int icnt; /* IRQ ringing counter w/o reset */
|
|
unsigned int gcnt; /* GCE */
|
|
unsigned int size;
|
|
/* init MAX_REQUEST_SIZE_PER_ENGINE MAX_FRAMES_PER_REQUEST */
|
|
};
|
|
|
|
struct frame {
|
|
enum FRAME_STATUS_ENUM state;
|
|
void *data; /* points to engine data */
|
|
};
|
|
|
|
struct request {
|
|
enum REQUEST_STATE_ENUM state;
|
|
pid_t pid;
|
|
struct ring_ctrl fctl;
|
|
struct frame frames[MAX_FRAMES_PER_REQUEST];
|
|
bool pending_run; /* pending frame in a running request */
|
|
};
|
|
|
|
struct engine_ops {
|
|
int (*req_enque_cb)(struct frame *frames, void *req);
|
|
int (*req_deque_cb)(struct frame *frames, void *req);
|
|
int (*frame_handler)(struct frame *frame);
|
|
int (*req_feedback_cb)(struct frame *frame);
|
|
};
|
|
|
|
struct engine_requests {
|
|
struct ring_ctrl req_ctl;
|
|
struct request reqs[MAX_REQUEST_SIZE_PER_ENGINE];
|
|
const struct engine_ops *ops;
|
|
struct completion req_handler_done;
|
|
|
|
bool req_running;
|
|
seqlock_t seqlock;
|
|
};
|
|
|
|
signed int dpe_init_ring_ctl(struct ring_ctrl *rctl);
|
|
signed int dpe_init_request(struct request *req);
|
|
signed int dpe_set_frame_data(struct frame *f, void *engine);
|
|
signed int dpe_register_requests(struct engine_requests *eng, size_t size);
|
|
signed int dpe_unregister_requests(struct engine_requests *eng);
|
|
signed int dpe_request_handler(struct engine_requests *eng, spinlock_t *lock);
|
|
|
|
|
|
/*TODO: APIs to manipulate requests */
|
|
int dpe_set_engine_ops(struct engine_requests *eng,
|
|
const struct engine_ops *ops);
|
|
|
|
signed int dpe_enque_request(struct engine_requests *eng, unsigned int fcnt,
|
|
void *req, pid_t pid);
|
|
signed int dpe_deque_request(struct engine_requests *eng, unsigned int *fcnt,
|
|
void *req);
|
|
int dpe_update_request(struct engine_requests *eng, pid_t *pid);
|
|
bool dpe_request_running(struct engine_requests *eng);
|
|
|
|
signed int dpe_request_dump(struct engine_requests *eng);
|
|
#endif
|