drivers/gpu/drm/nouveau/nouveau_bo.h

   1 #ifndef __NOUVEAU_BO_H__
   2 #define __NOUVEAU_BO_H__
   3
   4 struct nouveau_channel;
   5 struct nouveau_fence;
   6 struct nouveau_vma;
   7
   8 struct nouveau_bo {
   9         struct ttm_buffer_object bo;
  10         struct ttm_placement placement;
  11         u32 valid_domains;
  12         u32 placements[3];
  13         u32 busy_placements[3];
  14         struct ttm_bo_kmap_obj kmap;
  15         struct list_head head;
  16
  17         /* protected by ttm_bo_reserve() */
  18         struct drm_file *reserved_by;
  19         struct list_head entry;
  20         int pbbo_index;
  21         bool validate_mapped;
  22
  23         struct list_head vma_list;
  24         unsigned page_shift;
  25
  26         u32 tile_mode;
  27         u32 tile_flags;
  28         struct nouveau_drm_tile *tile;
  29
  30         struct drm_gem_object *gem;
  31
  32         /* protect by the ttm reservation lock */
  33         int pin_refcnt;
  34
  35         struct ttm_bo_kmap_obj dma_buf_vmap;
  36 };
  37
  38 static inline struct nouveau_bo *
  39 nouveau_bo(struct ttm_buffer_object *bo)
  40 {
  41         return container_of(bo, struct nouveau_bo, bo);
  42 }
  43
  44 static inline int
  45 nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
  46 {
  47         struct nouveau_bo *prev;
  48
  49         if (!pnvbo)
  50                 return -EINVAL;
  51         prev = *pnvbo;
  52
  53         *pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
  54         if (prev) {
  55                 struct ttm_buffer_object *bo = &prev->bo;
  56
  57                 ttm_bo_unref(&bo);
  58         }
  59
  60         return 0;
  61 }
  62
  63 extern struct ttm_bo_driver nouveau_bo_driver;
  64
  65 void nouveau_bo_move_init(struct nouveau_drm *);
  66 int  nouveau_bo_new(struct drm_device *, int size, int align, u32 flags,
  67                     u32 tile_mode, u32 tile_flags, struct sg_table *sg,
  68                     struct nouveau_bo **);
  69 int  nouveau_bo_pin(struct nouveau_bo *, u32 flags);
  70 int  nouveau_bo_unpin(struct nouveau_bo *);
  71 int  nouveau_bo_map(struct nouveau_bo *);
  72 void nouveau_bo_unmap(struct nouveau_bo *);
  73 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
  74 u16  nouveau_bo_rd16(struct nouveau_bo *, unsigned index);
  75 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
  76 u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
  77 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
  78 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *);
  79 int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
  80                          bool no_wait_gpu);
  81
  82 struct nouveau_vma *
  83 nouveau_bo_vma_find(struct nouveau_bo *, struct nouveau_vm *);
  84
  85 int  nouveau_bo_vma_add(struct nouveau_bo *, struct nouveau_vm *,
  86                         struct nouveau_vma *);
  87 void nouveau_bo_vma_del(struct nouveau_bo *, struct nouveau_vma *);
  88
  89 /* TODO: submit equivalent to TTM generic API upstream? */
  90 static inline void __iomem *
  91 nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
  92 {
  93         bool is_iomem;
  94         void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
  95                                                 &nvbo->kmap, &is_iomem);
  96         WARN_ON_ONCE(ioptr && !is_iomem);
  97         return ioptr;
  98 }
  99
 100 #endif