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/* SPDX-License-Identifier: GPL-2.0 */
/*
* dma-bufs for virtio exported objects
*
* Copyright (C) 2020 Google, Inc.
*/
#ifndef _LINUX_VIRTIO_DMA_BUF_H
#define _LINUX_VIRTIO_DMA_BUF_H
#include <linux/dma-buf.h>
#include <linux/uuid.h>
#include <linux/virtio.h>
/**
* struct virtio_dma_buf_ops - operations possible on exported object dma-buf
* @ops: the base dma_buf_ops. ops.attach MUST be virtio_dma_buf_attach.
* @device_attach: [optional] callback invoked by virtio_dma_buf_attach during
* all attach operations.
* @get_uid: [required] callback to get the uuid of the exported object.
*/
struct virtio_dma_buf_ops {
struct dma_buf_ops ops;
int (*device_attach)(struct dma_buf *dma_buf,
struct dma_buf_attachment *attach);
int (*get_uuid)(struct dma_buf *dma_buf, uuid_t *uuid);
};
int virtio_dma_buf_attach(struct dma_buf *dma_buf,
struct dma_buf_attachment *attach);
struct dma_buf *virtio_dma_buf_export
(const struct dma_buf_export_info *exp_info);
bool is_virtio_dma_buf(struct dma_buf *dma_buf);
int virtio_dma_buf_get_uuid(struct dma_buf *dma_buf, uuid_t *uuid);
#endif /* _LINUX_VIRTIO_DMA_BUF_H */