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         struct nouveau_cli *cli;
  30
  31         unsigned contig:1;
  32         unsigned page:5;
  33         unsigned kind:8;
  34         unsigned comp:3;
  35         unsigned zeta:3;
  36         unsigned mode;
  37
  38         struct nouveau_drm_tile *tile;
  39
  40         /* Only valid if allocated via nouveau_gem_new() and iff you hold a
  41          * gem reference to it! For debugging, use gem.filp != NULL to test
  42          * whether it is valid. */
  43         struct drm_gem_object gem;
  44
  45         /* protect by the ttm reservation lock */
  46         int pin_refcnt;
  47
  48         struct ttm_bo_kmap_obj dma_buf_vmap;
  49 };
  50
  51 static inline struct nouveau_bo *
  52 nouveau_bo(struct ttm_buffer_object *bo)
  53 {
  54         return container_of(bo, struct nouveau_bo, bo);
  55 }
  56
  57 static inline int
  58 nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
  59 {
  60         struct nouveau_bo *prev;
  61
  62         if (!pnvbo)
  63                 return -EINVAL;
  64         prev = *pnvbo;
  65
  66         *pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
  67         if (prev) {
  68                 struct ttm_buffer_object *bo = &prev->bo;
  69
  70                 ttm_bo_unref(&bo);
  71         }
  72
  73         return 0;
  74 }
  75
  76 extern struct ttm_bo_driver nouveau_bo_driver;
  77
  78 void nouveau_bo_move_init(struct nouveau_drm *);
  79 int  nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags,
  80                     u32 tile_mode, u32 tile_flags, struct sg_table *sg,
  81                     struct reservation_object *robj,
  82                     struct nouveau_bo **);
  83 int  nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
  84 int  nouveau_bo_unpin(struct nouveau_bo *);
  85 int  nouveau_bo_map(struct nouveau_bo *);
  86 void nouveau_bo_unmap(struct nouveau_bo *);
  87 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
  88 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
  89 u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
  90 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
  91 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive);
  92 int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
  93                          bool no_wait_gpu);
  94 void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo);
  95 void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo);
  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 static inline void
 109 nouveau_bo_unmap_unpin_unref(struct nouveau_bo **pnvbo)
 110 {
 111         if (*pnvbo) {
 112                 nouveau_bo_unmap(*pnvbo);
 113                 nouveau_bo_unpin(*pnvbo);
 114                 nouveau_bo_ref(NULL, pnvbo);
 115         }
 116 }
 117
 118 static inline int
 119 nouveau_bo_new_pin_map(struct nouveau_cli *cli, u64 size, int align, u32 flags,
 120                        struct nouveau_bo **pnvbo)
 121 {
 122         int ret = nouveau_bo_new(cli, size, align, flags,
 123                                  0, 0, NULL, NULL, pnvbo);
 124         if (ret == 0) {
 125                 ret = nouveau_bo_pin(*pnvbo, flags, true);
 126                 if (ret == 0) {
 127                         ret = nouveau_bo_map(*pnvbo);
 128                         if (ret == 0)
 129                                 return ret;
 130                         nouveau_bo_unpin(*pnvbo);
 131                 }
 132                 nouveau_bo_ref(NULL, pnvbo);
 133         }
 134         return ret;
 135 }
 136 #endif