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/* $OpenBSD: dma-buf.h,v 1.1 2019/04/14 10:14:53 jsg Exp $ */
/*
* Copyright (c) 2018 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _LINUX_DMA_BUF_H
#define _LINUX_DMA_BUF_H
#include <sys/types.h>
#include <sys/systm.h>
#include <linux/reservation.h>
struct dma_buf_ops;
struct dma_buf {
const struct dma_buf_ops *ops;
void *priv;
size_t size;
struct file *file;
};
struct dma_buf_attachment;
void get_dma_buf(struct dma_buf *);
struct dma_buf *dma_buf_get(int);
void dma_buf_put(struct dma_buf *);
int dma_buf_fd(struct dma_buf *, int);
struct dma_buf_ops {
void (*release)(struct dma_buf *);
};
struct dma_buf_export_info {
const struct dma_buf_ops *ops;
size_t size;
int flags;
void *priv;
struct reservation_object *resv;
};
#define DEFINE_DMA_BUF_EXPORT_INFO(x) struct dma_buf_export_info x
struct dma_buf *dma_buf_export(const struct dma_buf_export_info *);
#define dma_buf_attach(x, y) NULL
#define dma_buf_detach(x, y) panic("dma_buf_detach")
#endif
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