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         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 int armada_gem_dumb_map_offset(struct drm_file *, struct drm_device *,
  39         uint32_t, uint64_t *);
  40 int armada_gem_dumb_destroy(struct drm_file *, struct drm_device *,
  41         uint32_t);
  42 struct dma_buf *armada_gem_prime_export(struct drm_device *dev,
  43         struct drm_gem_object *obj, int flags);
  44 struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
  45         struct dma_buf *);
  46 int armada_gem_map_import(struct armada_gem_object *);
  47
  48 static inline struct armada_gem_object *armada_gem_object_lookup(
  49         struct drm_file *dfile, unsigned handle)
  50 {
  51         struct drm_gem_object *obj = drm_gem_object_lookup(dfile, handle);
  52
  53         return obj ? drm_to_armada_gem(obj) : NULL;
  54 }
  55 #endif