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 *
nouveau_bo(struct ttm_buffer_object * 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
nouveau_bo_ref(struct nouveau_bo * ref,struct nouveau_bo ** pnvbo)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 *
nvbo_kmap_obj_iovirtual(struct nouveau_bo * nvbo)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
nouveau_bo_unmap_unpin_unref(struct nouveau_bo ** pnvbo)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
nouveau_bo_new_pin_map(struct nouveau_cli * cli,u64 size,int align,u32 flags,struct nouveau_bo ** pnvbo)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
