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
135