drivers/gpu/drm/nouveau/nouveau_bo.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NOUVEAU_BO_H__
   3 #define __NOUVEAU_BO_H__
   4
   5 #include <drm/drm_gem.h>
   6
   7 struct nouveau_channel;
   8 struct nouveau_fence;
   9 struct nvkm_vma;
  10
  11 struct nouveau_bo {
  12         struct ttm_buffer_object bo;
  13         struct ttm_placement placement;
  14         u32 valid_domains;
  15         struct ttm_place placements[3];
  16         struct ttm_place busy_placements[3];
  17         bool force_coherent;
  18         struct ttm_bo_kmap_obj kmap;
  19         struct list_head head;
  20
  21         /* protected by ttm_bo_reserve() */
  22         struct drm_file *reserved_by;
  23         struct list_head entry;
  24         int pbbo_index;
  25         bool validate_mapped;
  26
  27         struct list_head vma_list;
  28         unsigned page_shift;
  29
  30         struct nouveau_cli *cli;
  31
  32         u32 tile_mode;
  33         u32 tile_flags;
  34         struct nouveau_drm_tile *tile;
  35
  36         /* Only valid if allocated via nouveau_gem_new() and iff you hold a
  37          * gem reference to it! For debugging, use gem.filp != NULL to test
  38          * whether it is valid. */
  39         struct drm_gem_object gem;
  40
  41         /* protect by the ttm reservation lock */
  42         int pin_refcnt;
  43
  44         struct ttm_bo_kmap_obj dma_buf_vmap;
  45 };
  46
  47 static inline struct nouveau_bo *
  48 nouveau_bo(struct ttm_buffer_object *bo)
  49 {
  50         return container_of(bo, struct nouveau_bo, bo);
  51 }
  52
  53 static inline int
  54 nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
  55 {
  56         struct nouveau_bo *prev;
  57
  58         if (!pnvbo)
  59                 return -EINVAL;
  60         prev = *pnvbo;
  61
  62         *pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
  63         if (prev) {
  64                 struct ttm_buffer_object *bo = &prev->bo;
  65
  66                 ttm_bo_unref(&bo);
  67         }
  68
  69         return 0;
  70 }
  71
  72 extern struct ttm_bo_driver nouveau_bo_driver;
  73
  74 void nouveau_bo_move_init(struct nouveau_drm *);
  75 int  nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags,
  76                     u32 tile_mode, u32 tile_flags, struct sg_table *sg,
  77                     struct reservation_object *robj,
  78                     struct nouveau_bo **);
  79 int  nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
  80 int  nouveau_bo_unpin(struct nouveau_bo *);
  81 int  nouveau_bo_map(struct nouveau_bo *);
  82 void nouveau_bo_unmap(struct nouveau_bo *);
  83 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
  84 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
  85 u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
  86 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
  87 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive);
  88 int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
  89                          bool no_wait_gpu);
  90 void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo);
  91 void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo);
  92
  93 struct nvkm_vma *
  94 nouveau_bo_vma_find(struct nouveau_bo *, struct nvkm_vm *);
  95
  96 int  nouveau_bo_vma_add(struct nouveau_bo *, struct nvkm_vm *,
  97                         struct nvkm_vma *);
  98 void nouveau_bo_vma_del(struct nouveau_bo *, struct nvkm_vma *);
  99
 100 /* TODO: submit equivalent to TTM generic API upstream? */
 101 static inline void __iomem *
 102 nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
 103 {
 104         bool is_iomem;
 105         void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
 106                                                 &nvbo->kmap, &is_iomem);
 107         WARN_ON_ONCE(ioptr && !is_iomem);
 108         return ioptr;
 109 }
 110
 111 #endif