linux/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c

/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright 2012 Red Hat Inc
 */

#include <linux/dma-buf.h>
#include <linux/highmem.h>
#include <linux/dma-resv.h>
#include <linux/module.h>

#include <asm/smp.h>

#include "gem/i915_gem_dmabuf.h"
#include "i915_drv.h"
#include "i915_gem_object.h"
#include "i915_scatterlist.h"

MODULE_IMPORT_NS(…);

I915_SELFTEST_DECLARE(…)

static struct drm_i915_gem_object *dma_buf_to_obj(struct dma_buf *buf)
{ … }

static struct sg_table *i915_gem_map_dma_buf(struct dma_buf_attachment *attach,
					     enum dma_data_direction dir)
{ … }

static int i915_gem_dmabuf_vmap(struct dma_buf *dma_buf,
				struct iosys_map *map)
{ … }

static void i915_gem_dmabuf_vunmap(struct dma_buf *dma_buf,
				   struct iosys_map *map)
{ … }

static int i915_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
{ … }

static int i915_gem_begin_cpu_access(struct dma_buf *dma_buf, enum dma_data_direction direction)
{ … }

static int i915_gem_end_cpu_access(struct dma_buf *dma_buf, enum dma_data_direction direction)
{ … }

static int i915_gem_dmabuf_attach(struct dma_buf *dmabuf,
				  struct dma_buf_attachment *attach)
{ … }

static void i915_gem_dmabuf_detach(struct dma_buf *dmabuf,
				   struct dma_buf_attachment *attach)
{ … }

static const struct dma_buf_ops i915_dmabuf_ops = …;

struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags)
{ … }

static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj)
{ … }

static void i915_gem_object_put_pages_dmabuf(struct drm_i915_gem_object *obj,
					     struct sg_table *sgt)
{ … }

static const struct drm_i915_gem_object_ops i915_gem_object_dmabuf_ops = …;

struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
					     struct dma_buf *dma_buf)
{ … }

#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/mock_dmabuf.c"
#include "selftests/i915_gem_dmabuf.c"
#endif