drivers/gpu/drm/armada/armada_gem.h

   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 #define drm_to_armada_gem(o) container_of(o, struct armada_gem_object, obj)
  25
  26 void armada_gem_free_object(struct drm_gem_object *);
  27 int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
  28 void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
  29 struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
  30         size_t);
  31 int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
  32         struct drm_mode_create_dumb *);
  33 struct dma_buf *armada_gem_prime_export(struct drm_gem_object *obj, int flags);
  34 struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
  35         struct dma_buf *);
  36 int armada_gem_map_import(struct armada_gem_object *);
  37
  38 static inline struct armada_gem_object *armada_gem_object_lookup(
  39         struct drm_file *dfile, unsigned handle)
  40 {
  41         struct drm_gem_object *obj = drm_gem_object_lookup(dfile, handle);
  42
  43         return obj ? drm_to_armada_gem(obj) : NULL;
  44 }
  45 #endif