drivers/gpu/drm/armada/armada_gem.h

   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 /* GEM */
  12 struct armada_gem_object {
  13         struct drm_gem_object   obj;
  14         void                    *addr;
  15         phys_addr_t             phys_addr;
  16         resource_size_t         dev_addr;
  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 int armada_gem_dumb_map_offset(struct drm_file *, struct drm_device *,
  36         uint32_t, uint64_t *);
  37 int armada_gem_dumb_destroy(struct drm_file *, struct drm_device *,
  38         uint32_t);
  39 struct dma_buf *armada_gem_prime_export(struct drm_device *dev,
  40         struct drm_gem_object *obj, int flags);
  41 struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
  42         struct dma_buf *);
  43 int armada_gem_map_import(struct armada_gem_object *);
  44
  45 static inline struct armada_gem_object *armada_gem_object_lookup(
  46         struct drm_device *dev, struct drm_file *dfile, unsigned handle)
  47 {
  48         struct drm_gem_object *obj = drm_gem_object_lookup(dev, dfile, handle);
  49
  50         return obj ? drm_to_armada_gem(obj) : NULL;
  51 }
  52 #endif