linux/drivers/gpu/drm/virtio/virtgpu_prime.c

/*
 * Copyright 2014 Canonical
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Andreas Pokorny
 */

#include <drm/drm_prime.h>
#include <linux/virtio_dma_buf.h>

#include "virtgpu_drv.h"

static int virtgpu_virtio_get_uuid(struct dma_buf *buf,
				   uuid_t *uuid)
{ … }

static struct sg_table *
virtgpu_gem_map_dma_buf(struct dma_buf_attachment *attach,
			enum dma_data_direction dir)
{ … }

static void virtgpu_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
				      struct sg_table *sgt,
				      enum dma_data_direction dir)
{ … }

static const struct virtio_dma_buf_ops virtgpu_dmabuf_ops = …;

int virtio_gpu_resource_assign_uuid(struct virtio_gpu_device *vgdev,
				    struct virtio_gpu_object *bo)
{ … }

struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
					 int flags)
{ … }

struct drm_gem_object *virtgpu_gem_prime_import(struct drm_device *dev,
						struct dma_buf *buf)
{ … }

struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
	struct drm_device *dev, struct dma_buf_attachment *attach,
	struct sg_table *table)
{ … }