1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2012 Russell King
4  */
5 #ifndef ARMADA_GEM_H
6 #define ARMADA_GEM_H
7 
8 #include <drm/drm_gem.h>
9 
10 /* GEM */
11 struct armada_gem_object {
12 	struct drm_gem_object	obj;
13 	void			*addr;
14 	phys_addr_t		phys_addr;
15 	resource_size_t		dev_addr;
16 	bool			mapped;
17 	struct drm_mm_node	*linear;	/* for linear backed */
18 	struct page		*page;		/* for page backed */
19 	struct sg_table		*sgt;		/* for imported */
20 	void			(*update)(void *);
21 	void			*update_data;
22 };
23 
24 extern const struct vm_operations_struct armada_gem_vm_ops;
25 
26 #define drm_to_armada_gem(o) container_of(o, struct armada_gem_object, obj)
27 
28 void armada_gem_free_object(struct drm_gem_object *);
29 int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
30 void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
31 struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
32 	size_t);
33 int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
34 	struct drm_mode_create_dumb *);
35 struct dma_buf *armada_gem_prime_export(struct drm_gem_object *obj, int flags);
36 struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
37 	struct dma_buf *);
38 int armada_gem_map_import(struct armada_gem_object *);
39 
40 static inline struct armada_gem_object *armada_gem_object_lookup(
41 	struct drm_file *dfile, unsigned handle)
42 {
43 	struct drm_gem_object *obj = drm_gem_object_lookup(dfile, handle);
44 
45 	return obj ? drm_to_armada_gem(obj) : NULL;
46 }
47 #endif
48