drm/armada/armada_gem.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright (C) 2012 Russell King
0004  */
0005 #ifndef ARMADA_GEM_H
0006 #define ARMADA_GEM_H
0007
0008 #include <drm/drm_gem.h>
0009
0010 /* GEM */
0011 struct armada_gem_object {
0012     struct drm_gem_object   obj;
0013     void            *addr;
0014     phys_addr_t     phys_addr;
0015     resource_size_t     dev_addr;
0016     bool            mapped;
0017     struct drm_mm_node  *linear;    /* for linear backed */
0018     struct page     *page;      /* for page backed */
0019     struct sg_table     *sgt;       /* for imported */
0020     void            (*update)(void *);
0021     void            *update_data;
0022 };
0023
0024 #define drm_to_armada_gem(o) container_of(o, struct armada_gem_object, obj)
0025
0026 void armada_gem_free_object(struct drm_gem_object *);
0027 int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
0028 void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
0029 struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
0030     size_t);
0031 int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
0032     struct drm_mode_create_dumb *);
0033 struct dma_buf *armada_gem_prime_export(struct drm_gem_object *obj, int flags);
0034 struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
0035     struct dma_buf *);
0036 int armada_gem_map_import(struct armada_gem_object *);
0037
0038 static inline struct armada_gem_object *armada_gem_object_lookup(
0039     struct drm_file *dfile, unsigned handle)
0040 {
0041     struct drm_gem_object *obj = drm_gem_object_lookup(dfile, handle);
0042
0043     return obj ? drm_to_armada_gem(obj) : NULL;
0044 }
0045 #endif