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
137