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 nouveau_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 	struct ttm_bo_kmap_obj kmap;
17 	struct list_head head;
18 
19 	/* protected by ttm_bo_reserve() */
20 	struct drm_file *reserved_by;
21 	struct list_head entry;
22 	int pbbo_index;
23 	bool validate_mapped;
24 
25 	struct list_head vma_list;
26 	unsigned page_shift;
27 
28 	u32 tile_mode;
29 	u32 tile_flags;
30 	struct nouveau_drm_tile *tile;
31 
32 	/* Only valid if allocated via nouveau_gem_new() and iff you hold a
33 	 * gem reference to it! For debugging, use gem.filp != NULL to test
34 	 * whether it is valid. */
35 	struct drm_gem_object gem;
36 
37 	/* protect by the ttm reservation lock */
38 	int pin_refcnt;
39 
40 	struct ttm_bo_kmap_obj dma_buf_vmap;
41 };
42 
43 static inline struct nouveau_bo *
44 nouveau_bo(struct ttm_buffer_object *bo)
45 {
46 	return container_of(bo, struct nouveau_bo, bo);
47 }
48 
49 static inline int
50 nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
51 {
52 	struct nouveau_bo *prev;
53 
54 	if (!pnvbo)
55 		return -EINVAL;
56 	prev = *pnvbo;
57 
58 	*pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
59 	if (prev) {
60 		struct ttm_buffer_object *bo = &prev->bo;
61 
62 		ttm_bo_unref(&bo);
63 	}
64 
65 	return 0;
66 }
67 
68 extern struct ttm_bo_driver nouveau_bo_driver;
69 
70 void nouveau_bo_move_init(struct nouveau_drm *);
71 int  nouveau_bo_new(struct drm_device *, int size, int align, u32 flags,
72 		    u32 tile_mode, u32 tile_flags, struct sg_table *sg,
73 		    struct reservation_object *robj,
74 		    struct nouveau_bo **);
75 int  nouveau_bo_pin(struct nouveau_bo *, u32 flags);
76 int  nouveau_bo_unpin(struct nouveau_bo *);
77 int  nouveau_bo_map(struct nouveau_bo *);
78 void nouveau_bo_unmap(struct nouveau_bo *);
79 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
80 u16  nouveau_bo_rd16(struct nouveau_bo *, unsigned index);
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 
88 struct nouveau_vma *
89 nouveau_bo_vma_find(struct nouveau_bo *, struct nouveau_vm *);
90 
91 int  nouveau_bo_vma_add(struct nouveau_bo *, struct nouveau_vm *,
92 			struct nouveau_vma *);
93 void nouveau_bo_vma_del(struct nouveau_bo *, struct nouveau_vma *);
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 #endif
107