1 /*
2  * Copyright (C) 2012 Russell King
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8 #ifndef ARMADA_GEM_H
9 #define ARMADA_GEM_H
10 
11 #include <drm/drm_gem.h>
12 
13 /* GEM */
14 struct armada_gem_object {
15 	struct drm_gem_object	obj;
16 	void			*addr;
17 	phys_addr_t		phys_addr;
18 	resource_size_t		dev_addr;
19 	bool			mapped;
20 	struct drm_mm_node	*linear;	/* for linear backed */
21 	struct page		*page;		/* for page backed */
22 	struct sg_table		*sgt;		/* for imported */
23 	void			(*update)(void *);
24 	void			*update_data;
25 };
26 
27 extern const struct vm_operations_struct armada_gem_vm_ops;
28 
29 #define drm_to_armada_gem(o) container_of(o, struct armada_gem_object, obj)
30 
31 void armada_gem_free_object(struct drm_gem_object *);
32 int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
33 void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
34 struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
35 	size_t);
36 int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
37 	struct drm_mode_create_dumb *);
38 struct dma_buf *armada_gem_prime_export(struct drm_device *dev,
39 	struct drm_gem_object *obj, int flags);
40 struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
41 	struct dma_buf *);
42 int armada_gem_map_import(struct armada_gem_object *);
43 
44 static inline struct armada_gem_object *armada_gem_object_lookup(
45 	struct drm_file *dfile, unsigned handle)
46 {
47 	struct drm_gem_object *obj = drm_gem_object_lookup(dfile, handle);
48 
49 	return obj ? drm_to_armada_gem(obj) : NULL;
50 }
51 #endif
52