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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Support for using dma-bufs.
*
* Copyright (C) 2022 Google LLC
*/
#ifndef __GXP_DMABUF_H__
#define __GXP_DMABUF_H__
#include <linux/iommu.h>
#include <linux/types.h>
#include "gxp-internal.h"
#include "gxp-mapping.h"
/**
* gxp_dmabuf_map() - Map a dma-buf for access by the specified virtual device
* @gxp: The GXP device to map the dma-buf for
* @domain: The iommu domain the dma-buf is mapped for
* @fd: A file descriptor for the dma-buf to be mapped
* @flags: The type of mapping to create; Currently unused
* @direction: DMA direction
*
* If successful, the mapping will be initialized with a reference count of 1
*
* Return: The structure that was created and is being tracked to describe the
* mapping of the dma-buf. Returns ERR_PTR on failure.
*/
struct gxp_mapping *gxp_dmabuf_map(struct gxp_dev *gxp,
struct gxp_iommu_domain *domain, int fd,
u32 flags, enum dma_data_direction dir);
#endif /* __GXP_DMABUF_H__ */
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