LXR linux/drivers/gpu/drm/nouveau/nouveau

   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
   7struct nouveau_channel;
   8struct nouveau_fence;
   9struct nvkm_vma;
  10
  11struct 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
  47static inline struct nouveau_bo *
  48nouveau_bo(struct ttm_buffer_object *bo)
  49{
  50        return container_of(bo, struct nouveau_bo, bo);
  51}
  52
  53static inline int
  54nouveau_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
  72extern struct ttm_bo_driver nouveau_bo_driver;
  73
  74void nouveau_bo_move_init(struct nouveau_drm *);
  75int  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 **);
  79int  nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
  80int  nouveau_bo_unpin(struct nouveau_bo *);
  81int  nouveau_bo_map(struct nouveau_bo *);
  82void nouveau_bo_unmap(struct nouveau_bo *);
  83void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
  84void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
  85u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
  86void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
  87void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive);
  88int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
  89                         bool no_wait_gpu);
  90void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo);
  91void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo);
  92
  93struct nvkm_vma *
  94nouveau_bo_vma_find(struct nouveau_bo *, struct nvkm_vm *);
  95
  96int  nouveau_bo_vma_add(struct nouveau_bo *, struct nvkm_vm *,
  97                        struct nvkm_vma *);
  98void nouveau_bo_vma_del(struct nouveau_bo *, struct nvkm_vma *);
  99
 100/* TODO: submit equivalent to TTM generic API upstream? */
 101static inline void __iomem *
 102nvbo_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
 112