1 /* $NetBSD: nouveau_bo.h,v 1.6 2021/12/19 10:51:56 riastradh Exp $ */
2
3 /* SPDX-License-Identifier: MIT */
4 #ifndef __NOUVEAU_BO_H__
5 #define __NOUVEAU_BO_H__
6
7 #include <drm/drm_gem.h>
8
9 #include <ttm/ttm_bo_api.h>
10
11 struct nouveau_channel;
12 struct nouveau_cli;
13 struct nouveau_drm;
14 struct nouveau_fence;
15 struct nvkm_vm;
16 struct nvkm_vma;
17
18 struct nouveau_bo {
19 struct ttm_buffer_object bo;
20 struct ttm_placement placement;
21 u32 valid_domains;
22 struct ttm_place placements[3];
23 struct ttm_place busy_placements[3];
24 bool force_coherent;
25 struct ttm_bo_kmap_obj kmap;
26 struct list_head head;
27
28 /* protected by ttm_bo_reserve() */
29 struct drm_file *reserved_by;
30 struct list_head entry;
31 int pbbo_index;
32 bool validate_mapped;
33
34 struct list_head vma_list;
35
36 unsigned contig:1;
37 unsigned page:5;
38 unsigned kind:8;
39 unsigned comp:3;
40 unsigned zeta:3;
41 unsigned mode;
42
43 struct nouveau_drm_tile *tile;
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 *
nouveau_bo(struct ttm_buffer_object * 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
nouveau_bo_ref(struct nouveau_bo * ref,struct nouveau_bo ** pnvbo)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 if (ref) {
67 ttm_bo_get(&ref->bo);
68 *pnvbo = nouveau_bo(&ref->bo);
69 } else {
70 *pnvbo = NULL;
71 }
72 if (prev)
73 ttm_bo_put(&prev->bo);
74
75 return 0;
76 }
77
78 extern struct ttm_bo_driver nouveau_bo_driver;
79
80 void nouveau_bo_move_init(struct nouveau_drm *);
81 struct nouveau_bo *nouveau_bo_alloc(struct nouveau_cli *, u64 *size, int *align,
82 u32 flags, u32 tile_mode, u32 tile_flags);
83 int nouveau_bo_init(struct nouveau_bo *, u64 size, int align, u32 flags,
84 struct sg_table *sg, struct dma_resv *robj);
85 int nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags,
86 u32 tile_mode, u32 tile_flags, struct sg_table *sg,
87 struct dma_resv *robj,
88 struct nouveau_bo **);
89 int nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
90 int nouveau_bo_unpin(struct nouveau_bo *);
91 int nouveau_bo_map(struct nouveau_bo *);
92 void nouveau_bo_unmap(struct nouveau_bo *);
93 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
94 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
95 u32 nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
96 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
97 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive);
98 int nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
99 bool no_wait_gpu);
100 void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo);
101 void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo);
102
103 #ifdef __NetBSD__
104 # define __iomem volatile
105 # define __force
106 #endif
107
108 /* TODO: submit equivalent to TTM generic API upstream? */
109 static inline void __iomem *
nvbo_kmap_obj_iovirtual(struct nouveau_bo * nvbo)110 nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
111 {
112 bool is_iomem;
113 void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
114 &nvbo->kmap, &is_iomem);
115 WARN_ON_ONCE(ioptr && !is_iomem);
116 return ioptr;
117 }
118
119 #ifdef __NetBSD__
120 # undef __iomem
121 # undef __force
122 #endif
123
124 static inline void
nouveau_bo_unmap_unpin_unref(struct nouveau_bo ** pnvbo)125 nouveau_bo_unmap_unpin_unref(struct nouveau_bo **pnvbo)
126 {
127 if (*pnvbo) {
128 nouveau_bo_unmap(*pnvbo);
129 nouveau_bo_unpin(*pnvbo);
130 nouveau_bo_ref(NULL, pnvbo);
131 }
132 }
133
134 static inline int
nouveau_bo_new_pin_map(struct nouveau_cli * cli,u64 size,int align,u32 flags,struct nouveau_bo ** pnvbo)135 nouveau_bo_new_pin_map(struct nouveau_cli *cli, u64 size, int align, u32 flags,
136 struct nouveau_bo **pnvbo)
137 {
138 int ret = nouveau_bo_new(cli, size, align, flags,
139 0, 0, NULL, NULL, pnvbo);
140 if (ret == 0) {
141 ret = nouveau_bo_pin(*pnvbo, flags, true);
142 if (ret == 0) {
143 ret = nouveau_bo_map(*pnvbo);
144 if (ret == 0)
145 return ret;
146 nouveau_bo_unpin(*pnvbo);
147 }
148 nouveau_bo_ref(NULL, pnvbo);
149 }
150 return ret;
151 }
152 #endif
153