root/drivers/gpu/drm/nouveau/nouveau_bo.h

INCLUDED FROM

DEFINITIONS

1. nouveau_bo
2. nouveau_bo_ref
3. nvbo_kmap_obj_iovirtual
4. nouveau_bo_unmap_unpin_unref
5. nouveau_bo_new_pin_map

   1 /* SPDX-License-Identifier: MIT */
   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 
  29         unsigned contig:1;
  30         unsigned page:5;
  31         unsigned kind:8;
  32         unsigned comp:3;
  33         unsigned zeta:3;
  34         unsigned mode;
  35 
  36         struct nouveau_drm_tile *tile;
  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         if (ref) {
  60                 ttm_bo_get(&ref->bo);
  61                 *pnvbo = nouveau_bo(&ref->bo);
  62         } else {
  63                 *pnvbo = NULL;
  64         }
  65         if (prev)
  66                 ttm_bo_put(&prev->bo);
  67 
  68         return 0;
  69 }
  70 
  71 extern struct ttm_bo_driver nouveau_bo_driver;
  72 
  73 void nouveau_bo_move_init(struct nouveau_drm *);
  74 struct nouveau_bo *nouveau_bo_alloc(struct nouveau_cli *, u64 *size, int *align,
  75                                     u32 flags, u32 tile_mode, u32 tile_flags);
  76 int  nouveau_bo_init(struct nouveau_bo *, u64 size, int align, u32 flags,
  77                      struct sg_table *sg, struct dma_resv *robj);
  78 int  nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags,
  79                     u32 tile_mode, u32 tile_flags, struct sg_table *sg,
  80                     struct dma_resv *robj,
  81                     struct nouveau_bo **);
  82 int  nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
  83 int  nouveau_bo_unpin(struct nouveau_bo *);
  84 int  nouveau_bo_map(struct nouveau_bo *);
  85 void nouveau_bo_unmap(struct nouveau_bo *);
  86 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
  87 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
  88 u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
  89 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
  90 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive);
  91 int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
  92                          bool no_wait_gpu);
  93 void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo);
  94 void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo);
  95 
  96 /* TODO: submit equivalent to TTM generic API upstream? */
  97 static inline void __iomem *
  98 nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
  99 {
 100         bool is_iomem;
 101         void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
 102                                                 &nvbo->kmap, &is_iomem);
 103         WARN_ON_ONCE(ioptr && !is_iomem);
 104         return ioptr;
 105 }
 106 
 107 static inline void
 108 nouveau_bo_unmap_unpin_unref(struct nouveau_bo **pnvbo)
 109 {
 110         if (*pnvbo) {
 111                 nouveau_bo_unmap(*pnvbo);
 112                 nouveau_bo_unpin(*pnvbo);
 113                 nouveau_bo_ref(NULL, pnvbo);
 114         }
 115 }
 116 
 117 static inline int
 118 nouveau_bo_new_pin_map(struct nouveau_cli *cli, u64 size, int align, u32 flags,
 119                        struct nouveau_bo **pnvbo)
 120 {
 121         int ret = nouveau_bo_new(cli, size, align, flags,
 122                                  0, 0, NULL, NULL, pnvbo);
 123         if (ret == 0) {
 124                 ret = nouveau_bo_pin(*pnvbo, flags, true);
 125                 if (ret == 0) {
 126                         ret = nouveau_bo_map(*pnvbo);
 127                         if (ret == 0)
 128                                 return ret;
 129                         nouveau_bo_unpin(*pnvbo);
 130                 }
 131                 nouveau_bo_ref(NULL, pnvbo);
 132         }
 133         return ret;
 134 }
 135 #endif