drivers/gpu/drm/nouveau/nouveau_bo.h

   1 #ifndef __NOUVEAU_BO_H__
   2 #define __NOUVEAU_BO_H__
   3
   4 #include <drm/drm_gem.h>
   5
   6 struct nouveau_channel;
   7 struct nouveau_fence;
   8 struct nvkm_vma;
   9
  10 struct nouveau_bo {
  11         struct ttm_buffer_object bo;
  12         struct ttm_placement placement;
  13         u32 valid_domains;
  14         struct ttm_place placements[3];
  15         struct ttm_place busy_placements[3];
  16         bool force_coherent;
  17         struct ttm_bo_kmap_obj kmap;
  18         struct list_head head;
  19
  20         /* protected by ttm_bo_reserve() */
  21         struct drm_file *reserved_by;
  22         struct list_head entry;
  23         int pbbo_index;
  24         bool validate_mapped;
  25
  26         struct list_head vma_list;
  27         unsigned page_shift;
  28
  29         u32 tile_mode;
  30         u32 tile_flags;
  31         struct nouveau_drm_tile *tile;
  32
  33         /* Only valid if allocated via nouveau_gem_new() and iff you hold a
  34          * gem reference to it! For debugging, use gem.filp != NULL to test
  35          * whether it is valid. */
  36         struct drm_gem_object gem;
  37
  38         /* protect by the ttm reservation lock */
  39         int pin_refcnt;
  40
  41         struct ttm_bo_kmap_obj dma_buf_vmap;
  42 };
  43
  44 static inline struct nouveau_bo *
  45 nouveau_bo(struct ttm_buffer_object *bo)
  46 {
  47         return container_of(bo, struct nouveau_bo, bo);
  48 }
  49
  50 static inline int
  51 nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
  52 {
  53         struct nouveau_bo *prev;
  54
  55         if (!pnvbo)
  56                 return -EINVAL;
  57         prev = *pnvbo;
  58
  59         *pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
  60         if (prev) {
  61                 struct ttm_buffer_object *bo = &prev->bo;
  62
  63                 ttm_bo_unref(&bo);
  64         }
  65
  66         return 0;
  67 }
  68
  69 extern struct ttm_bo_driver nouveau_bo_driver;
  70
  71 void nouveau_bo_move_init(struct nouveau_drm *);
  72 int  nouveau_bo_new(struct drm_device *, int size, int align, u32 flags,
  73                     u32 tile_mode, u32 tile_flags, struct sg_table *sg,
  74                     struct reservation_object *robj,
  75                     struct nouveau_bo **);
  76 int  nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
  77 int  nouveau_bo_unpin(struct nouveau_bo *);
  78 int  nouveau_bo_map(struct nouveau_bo *);
  79 void nouveau_bo_unmap(struct nouveau_bo *);
  80 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
  81 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
  82 u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
  83 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
  84 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive);
  85 int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
  86                          bool no_wait_gpu);
  87 void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo);
  88 void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo);
  89
  90 struct nvkm_vma *
  91 nouveau_bo_vma_find(struct nouveau_bo *, struct nvkm_vm *);
  92
  93 int  nouveau_bo_vma_add(struct nouveau_bo *, struct nvkm_vm *,
  94                         struct nvkm_vma *);
  95 void nouveau_bo_vma_del(struct nouveau_bo *, struct nvkm_vma *);
  96
  97 /* TODO: submit equivalent to TTM generic API upstream? */
  98 static inline void __iomem *
  99 nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
 100 {
 101         bool is_iomem;
 102         void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
 103                                                 &nvbo->kmap, &is_iomem);
 104         WARN_ON_ONCE(ioptr && !is_iomem);
 105         return ioptr;
 106 }
 107
 108 #endif