1 #ifndef __NOUVEAU_BO_H__
2 #define __NOUVEAU_BO_H__
3 
4 #include <drm/drm_gem.h>
5 
6 struct nouveau_channel;
7 struct nouveau_fence;
8 struct nvkm_vma;
9 
10 struct nouveau_bo {
11 	struct ttm_buffer_object bo;
12 	struct ttm_placement placement;
13 	u32 valid_domains;
14 	struct ttm_place placements[3];
15 	struct ttm_place busy_placements[3];
16 	bool force_coherent;
17 	struct ttm_bo_kmap_obj kmap;
18 	struct list_head head;
19 
20 	/* protected by ttm_bo_reserve() */
21 	struct drm_file *reserved_by;
22 	struct list_head entry;
23 	int pbbo_index;
24 	bool validate_mapped;
25 
26 	struct list_head vma_list;
27 	unsigned page_shift;
28 
29 	u32 tile_mode;
30 	u32 tile_flags;
31 	struct nouveau_drm_tile *tile;
32 
33 	/* Only valid if allocated via nouveau_gem_new() and iff you hold a
34 	 * gem reference to it! For debugging, use gem.filp != NULL to test
35 	 * whether it is valid. */
36 	struct drm_gem_object gem;
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 	*pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
60 	if (prev) {
61 		struct ttm_buffer_object *bo = &prev->bo;
62 
63 		ttm_bo_unref(&bo);
64 	}
65 
66 	return 0;
67 }
68 
69 extern struct ttm_bo_driver nouveau_bo_driver;
70 
71 void nouveau_bo_move_init(struct nouveau_drm *);
72 int  nouveau_bo_new(struct drm_device *, int size, int align, u32 flags,
73 		    u32 tile_mode, u32 tile_flags, struct sg_table *sg,
74 		    struct reservation_object *robj,
75 		    struct nouveau_bo **);
76 int  nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
77 int  nouveau_bo_unpin(struct nouveau_bo *);
78 int  nouveau_bo_map(struct nouveau_bo *);
79 void nouveau_bo_unmap(struct nouveau_bo *);
80 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
81 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
82 u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
83 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
84 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive);
85 int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
86 			 bool no_wait_gpu);
87 void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo);
88 void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo);
89 
90 struct nvkm_vma *
91 nouveau_bo_vma_find(struct nouveau_bo *, struct nvkm_vm *);
92 
93 int  nouveau_bo_vma_add(struct nouveau_bo *, struct nvkm_vm *,
94 			struct nvkm_vma *);
95 void nouveau_bo_vma_del(struct nouveau_bo *, struct nvkm_vma *);
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 #endif
109