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https://gitee.com/Vancouver2017/luban-lite-t3e-pro.git
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94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/*
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* Copyright (C) 2020-2022 Artinchip Technology Co. Ltd
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*
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* author: <qi.xu@artinchip.com>
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* Desc: allocator of physic continuous buffer used by ve
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*/
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#ifndef VE_BUFFER_H
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#define VE_BUFFER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <limits.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include "dma_allocator.h"
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enum ve_buffer_type {
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VE_BUFFER_TYPE_DMA,
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};
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enum ve_buffer_flag {
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// need virtual address
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ALLOC_NEED_VIR_ADDR = 1,
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};
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/**
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* struct ve_buffer
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* @vir_addr: virtual address of this buffer
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* @phy_addr: physic address of this buffer
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* @size: buffer size
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* @fd: dma-buf fd
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*/
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struct ve_buffer {
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unsigned char *vir_addr; // virtual address
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unsigned long phy_addr; // physic address
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int size; // buffer size
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int fd; // dma-buf fd
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};
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struct ve_buffer_allocator;
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/**
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* ve_buffer_allocator_create - create ve buffer allocator
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* @type: buffer type ( DMA or others)
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*/
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struct ve_buffer_allocator *ve_buffer_allocator_create(enum ve_buffer_type type);
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/**
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* ve_buffer_allocator_destroy - destory ve buffer allocator
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* @ctx: ve buffer allocator
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*/
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void ve_buffer_allocator_destroy(struct ve_buffer_allocator *ctx);
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/**
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* ve_buffer_alloc - alloc one ve buffer
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* @ctx: ve buffer allocator
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* @size: buffer size
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* @flag: alloc flag
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*/
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struct ve_buffer *ve_buffer_alloc(struct ve_buffer_allocator *ctx, int size, enum ve_buffer_flag flag);
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/**
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* ve_buffer_free - free a ve buffer
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* @ctx: ve buffer allocator
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* @buf: the ve buffer need free
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*/
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void ve_buffer_free(struct ve_buffer_allocator *ctx, struct ve_buffer *buf);
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/**
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* ve_buffer_sync - flush cache for data sync
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* @buf: ve buffer
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* @flag: enum mpp_cache_sync_flag;
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*/
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int ve_buffer_sync(struct ve_buffer *buf, enum dma_buf_sync_flag flag);
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/**
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* ve_buffer_sync_range - flush cache for data sync
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* @buf: ve buffer
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* @start_addr: the virtual address of buffer need sync
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* @size: the size of buffer
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* @flag: enum mpp_cache_sync_flag;
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*/
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int ve_buffer_sync_range(struct ve_buffer *buf, unsigned char* start_addr, int size, enum dma_buf_sync_flag flag);
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#ifdef __cplusplus
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}
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#endif
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#endif
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