1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
4  * Author:Mark Yao <mark.yao@rock-chips.com>
5  */
6 
7 #ifndef _ROCKCHIP_DRM_GEM_H
8 #define _ROCKCHIP_DRM_GEM_H
9 
10 #define to_rockchip_obj(x) container_of(x, struct rockchip_gem_object, base)
11 
12 struct rockchip_gem_object {
13 	struct drm_gem_object base;
14 	unsigned int flags;
15 
16 	void *kvaddr;
17 	dma_addr_t dma_addr;
18 	/* Used when IOMMU is disabled */
19 	unsigned long dma_attrs;
20 
21 	/* Used when IOMMU is enabled */
22 	struct drm_mm_node mm;
23 	unsigned long num_pages;
24 	struct page **pages;
25 	struct sg_table *sgt;
26 	size_t size;
27 };
28 
29 struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj);
30 struct drm_gem_object *
31 rockchip_gem_prime_import_sg_table(struct drm_device *dev,
32 				   struct dma_buf_attachment *attach,
33 				   struct sg_table *sg);
34 int rockchip_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
35 void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map);
36 
37 /* drm driver mmap file operations */
38 int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma);
39 
40 /* mmap a gem object to userspace. */
41 int rockchip_gem_mmap_buf(struct drm_gem_object *obj,
42 			  struct vm_area_struct *vma);
43 
44 struct rockchip_gem_object *
45 	rockchip_gem_create_object(struct drm_device *drm, unsigned int size,
46 				   bool alloc_kmap);
47 
48 void rockchip_gem_free_object(struct drm_gem_object *obj);
49 
50 int rockchip_gem_dumb_create(struct drm_file *file_priv,
51 			     struct drm_device *dev,
52 			     struct drm_mode_create_dumb *args);
53 #endif /* _ROCKCHIP_DRM_GEM_H */
54