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         /* Only valid if allocated via nouveau_gem_new() and iff you hold a
  31          * gem reference to it! For debugging, use gem.filp != NULL to test
  32          * whether it is valid. */
  33         struct drm_gem_object gem;
  34
  35         /* protect by the ttm reservation lock */
  36         int pin_refcnt;
  37
  38         struct ttm_bo_kmap_obj dma_buf_vmap;
  39 };
  40
  41 static inline struct nouveau_bo *
  42 nouveau_bo(struct ttm_buffer_object *bo)
  43 {
  44         return container_of(bo, struct nouveau_bo, bo);
  45 }
  46
  47 static inline int
  48 nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
  49 {
  50         struct nouveau_bo *prev;
  51
  52         if (!pnvbo)
  53                 return -EINVAL;
  54         prev = *pnvbo;
  55
  56         *pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
  57         if (prev) {
  58                 struct ttm_buffer_object *bo = &prev->bo;
  59
  60                 ttm_bo_unref(&bo);
  61         }
  62
  63         return 0;
  64 }
  65
  66 extern struct ttm_bo_driver nouveau_bo_driver;
  67
  68 void nouveau_bo_move_init(struct nouveau_drm *);
  69 int  nouveau_bo_new(struct drm_device *, int size, int align, u32 flags,
  70                     u32 tile_mode, u32 tile_flags, struct sg_table *sg,
  71                     struct nouveau_bo **);
  72 int  nouveau_bo_pin(struct nouveau_bo *, u32 flags);
  73 int  nouveau_bo_unpin(struct nouveau_bo *);
  74 int  nouveau_bo_map(struct nouveau_bo *);
  75 void nouveau_bo_unmap(struct nouveau_bo *);
  76 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
  77 u16  nouveau_bo_rd16(struct nouveau_bo *, unsigned index);
  78 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
  79 u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
  80 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
  81 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *);
  82 int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
  83                          bool no_wait_gpu);
  84
  85 struct nouveau_vma *
  86 nouveau_bo_vma_find(struct nouveau_bo *, struct nouveau_vm *);
  87
  88 int  nouveau_bo_vma_add(struct nouveau_bo *, struct nouveau_vm *,
  89                         struct nouveau_vma *);
  90 void nouveau_bo_vma_del(struct nouveau_bo *, struct nouveau_vma *);
  91
  92 /* TODO: submit equivalent to TTM generic API upstream? */
  93 static inline void __iomem *
  94 nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
  95 {
  96         bool is_iomem;
  97         void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
  98                                                 &nvbo->kmap, &is_iomem);
  99         WARN_ON_ONCE(ioptr && !is_iomem);
 100         return ioptr;
 101 }
 102
 103 #endif