LXR linux/drivers/gpu/drm/armada/armada

   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 */
  14struct 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
  26extern 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
  30void armada_gem_free_object(struct drm_gem_object *);
  31int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
  32void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
  33struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
  34        size_t);
  35int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
  36        struct drm_mode_create_dumb *);
  37int armada_gem_dumb_map_offset(struct drm_file *, struct drm_device *,
  38        uint32_t, uint64_t *);
  39int armada_gem_dumb_destroy(struct drm_file *, struct drm_device *,
  40        uint32_t);
  41struct dma_buf *armada_gem_prime_export(struct drm_device *dev,
  42        struct drm_gem_object *obj, int flags);
  43struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
  44        struct dma_buf *);
  45int armada_gem_map_import(struct armada_gem_object *);
  46
  47static 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
  55