linux/drivers/gpu/drm/exynos/exynos_drm_gem.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* exynos_drm_gem.c
 *
 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
 * Author: Inki Dae <[email protected]>
 */


#include <linux/dma-buf.h>
#include <linux/pfn_t.h>
#include <linux/shmem_fs.h>
#include <linux/module.h>

#include <drm/drm_prime.h>
#include <drm/drm_vma_manager.h>
#include <drm/exynos_drm.h>

#include "exynos_drm_drv.h"
#include "exynos_drm_gem.h"

MODULE_IMPORT_NS(…);

static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);

static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem, bool kvmap)
{ … }

static void exynos_drm_free_buf(struct exynos_drm_gem *exynos_gem)
{ … }

static int exynos_drm_gem_handle_create(struct drm_gem_object *obj,
					struct drm_file *file_priv,
					unsigned int *handle)
{ … }

void exynos_drm_gem_destroy(struct exynos_drm_gem *exynos_gem)
{ … }

static const struct vm_operations_struct exynos_drm_gem_vm_ops = …;

static const struct drm_gem_object_funcs exynos_drm_gem_object_funcs = …;

static struct exynos_drm_gem *exynos_drm_gem_init(struct drm_device *dev,
						  unsigned long size)
{ … }

struct exynos_drm_gem *exynos_drm_gem_create(struct drm_device *dev,
					     unsigned int flags,
					     unsigned long size,
					     bool kvmap)
{ … }

int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file_priv)
{ … }

int exynos_drm_gem_map_ioctl(struct drm_device *dev, void *data,
			     struct drm_file *file_priv)
{ … }

struct exynos_drm_gem *exynos_drm_gem_get(struct drm_file *filp,
					  unsigned int gem_handle)
{ … }

static int exynos_drm_gem_mmap_buffer(struct exynos_drm_gem *exynos_gem,
				      struct vm_area_struct *vma)
{ … }

int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,
				      struct drm_file *file_priv)
{ … }

void exynos_drm_gem_free_object(struct drm_gem_object *obj)
{ … }

int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
			       struct drm_device *dev,
			       struct drm_mode_create_dumb *args)
{ … }

static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
{ … }

/* low-level interface prime helpers */
struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev,
					    struct dma_buf *dma_buf)
{ … }

struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj)
{ … }

struct drm_gem_object *
exynos_drm_gem_prime_import_sg_table(struct drm_device *dev,
				     struct dma_buf_attachment *attach,
				     struct sg_table *sgt)
{ … }