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
  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         /* Only valid if allocated via nouveau_gem_new() and iff you hold a
  39          * gem reference to it! For debugging, use gem.filp != NULL to test
  40          * whether it is valid. */
  41         struct drm_gem_object gem;
  42
  43         /* protect by the ttm reservation lock */
  44         int pin_refcnt;
  45
  46         struct ttm_bo_kmap_obj dma_buf_vmap;
  47 };
  48
  49 static inline struct nouveau_bo *
  50 nouveau_bo(struct ttm_buffer_object *bo)
  51 {
  52         return container_of(bo, struct nouveau_bo, bo);
  53 }
  54
  55 static inline int
  56 nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
  57 {
  58         struct nouveau_bo *prev;
  59
  60         if (!pnvbo)
  61                 return -EINVAL;
  62         prev = *pnvbo;
  63
  64         *pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
  65         if (prev) {
  66                 struct ttm_buffer_object *bo = &prev->bo;
  67
  68                 ttm_bo_unref(&bo);
  69         }
  70
  71         return 0;
  72 }
  73
  74 extern struct ttm_bo_driver nouveau_bo_driver;
  75
  76 void nouveau_bo_move_init(struct nouveau_drm *);
  77 int  nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags,
  78                     u32 tile_mode, u32 tile_flags, struct sg_table *sg,
  79                     struct reservation_object *robj,
  80                     struct nouveau_bo **);
  81 int  nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
  82 int  nouveau_bo_unpin(struct nouveau_bo *);
  83 int  nouveau_bo_map(struct nouveau_bo *);
  84 void nouveau_bo_unmap(struct nouveau_bo *);
  85 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
  86 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
  87 u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
  88 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
  89 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive);
  90 int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
  91                          bool no_wait_gpu);
  92 void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo);
  93 void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo);
  94
  95 /* TODO: submit equivalent to TTM generic API upstream? */
  96 static inline void __iomem *
  97 nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
  98 {
  99         bool is_iomem;
 100         void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
 101                                                 &nvbo->kmap, &is_iomem);
 102         WARN_ON_ONCE(ioptr && !is_iomem);
 103         return ioptr;
 104 }
 105
 106 static inline void
 107 nouveau_bo_unmap_unpin_unref(struct nouveau_bo **pnvbo)
 108 {
 109         if (*pnvbo) {
 110                 nouveau_bo_unmap(*pnvbo);
 111                 nouveau_bo_unpin(*pnvbo);
 112                 nouveau_bo_ref(NULL, pnvbo);
 113         }
 114 }
 115
 116 static inline int
 117 nouveau_bo_new_pin_map(struct nouveau_cli *cli, u64 size, int align, u32 flags,
 118                        struct nouveau_bo **pnvbo)
 119 {
 120         int ret = nouveau_bo_new(cli, size, align, flags,
 121                                  0, 0, NULL, NULL, pnvbo);
 122         if (ret == 0) {
 123                 ret = nouveau_bo_pin(*pnvbo, flags, true);
 124                 if (ret == 0) {
 125                         ret = nouveau_bo_map(*pnvbo);
 126                         if (ret == 0)
 127                                 return ret;
 128                         nouveau_bo_unpin(*pnvbo);
 129                 }
 130                 nouveau_bo_ref(NULL, pnvbo);
 131         }
 132         return ret;
 133 }
 134 #endif