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 #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         struct drm_mm_node      *linear;        /* for linear backed */
  20         struct page             *page;          /* for page backed */
  21         struct sg_table         *sgt;           /* for imported */
  22         void                    (*update)(void *);
  23         void                    *update_data;
  24 };
  25
  26 extern const struct vm_operations_struct armada_gem_vm_ops;
  27
  28 #define drm_to_armada_gem(o) container_of(o, struct armada_gem_object, obj)
  29
  30 void armada_gem_free_object(struct drm_gem_object *);
  31 int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
  32 void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
  33 struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
  34         size_t);
  35 int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
  36         struct drm_mode_create_dumb *);
  37 int armada_gem_dumb_map_offset(struct drm_file *, struct drm_device *,
  38         uint32_t, uint64_t *);
  39 int armada_gem_dumb_destroy(struct drm_file *, struct drm_device *,
  40         uint32_t);
  41 struct dma_buf *armada_gem_prime_export(struct drm_device *dev,
  42         struct drm_gem_object *obj, int flags);
  43 struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
  44         struct dma_buf *);
  45 int armada_gem_map_import(struct armada_gem_object *);
  46
  47 static inline struct armada_gem_object *armada_gem_object_lookup(
  48         struct drm_device *dev, struct drm_file *dfile, unsigned handle)
  49 {
  50         struct drm_gem_object *obj = drm_gem_object_lookup(dev, dfile, handle);
  51
  52         return obj ? drm_to_armada_gem(obj) : NULL;
  53 }
  54 #endif