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a8c21a54 T |
1 | /* |
2 | * Copyright (C) 2015 Etnaviv Project | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License version 2 as published by | |
6 | * the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
15 | */ | |
16 | ||
17 | #ifndef __ETNAVIV_MMU_H__ | |
18 | #define __ETNAVIV_MMU_H__ | |
19 | ||
20 | #include <linux/iommu.h> | |
21 | ||
22 | enum etnaviv_iommu_version { | |
23 | ETNAVIV_IOMMU_V1 = 0, | |
24 | ETNAVIV_IOMMU_V2, | |
25 | }; | |
26 | ||
27 | struct etnaviv_gpu; | |
28 | struct etnaviv_vram_mapping; | |
29 | ||
30 | struct etnaviv_iommu_ops { | |
31 | struct iommu_ops ops; | |
32 | size_t (*dump_size)(struct iommu_domain *); | |
33 | void (*dump)(struct iommu_domain *, void *); | |
34 | }; | |
35 | ||
36 | struct etnaviv_iommu { | |
37 | struct etnaviv_gpu *gpu; | |
38 | struct iommu_domain *domain; | |
39 | ||
40 | enum etnaviv_iommu_version version; | |
41 | ||
42 | /* memory manager for GPU address area */ | |
43 | struct mutex lock; | |
44 | struct list_head mappings; | |
45 | struct drm_mm mm; | |
46 | u32 last_iova; | |
47 | bool need_flush; | |
48 | }; | |
49 | ||
50 | struct etnaviv_gem_object; | |
51 | ||
52 | int etnaviv_iommu_attach(struct etnaviv_iommu *iommu, const char **names, | |
53 | int cnt); | |
54 | int etnaviv_iommu_map(struct etnaviv_iommu *iommu, u32 iova, | |
55 | struct sg_table *sgt, unsigned len, int prot); | |
56 | int etnaviv_iommu_unmap(struct etnaviv_iommu *iommu, u32 iova, | |
57 | struct sg_table *sgt, unsigned len); | |
58 | int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu, | |
59 | struct etnaviv_gem_object *etnaviv_obj, u32 memory_base, | |
60 | struct etnaviv_vram_mapping *mapping); | |
61 | void etnaviv_iommu_unmap_gem(struct etnaviv_iommu *mmu, | |
62 | struct etnaviv_vram_mapping *mapping); | |
63 | void etnaviv_iommu_destroy(struct etnaviv_iommu *iommu); | |
64 | ||
65 | size_t etnaviv_iommu_dump_size(struct etnaviv_iommu *iommu); | |
66 | void etnaviv_iommu_dump(struct etnaviv_iommu *iommu, void *buf); | |
67 | ||
68 | struct etnaviv_iommu *etnaviv_iommu_new(struct etnaviv_gpu *gpu, | |
69 | struct iommu_domain *domain, enum etnaviv_iommu_version version); | |
70 | ||
71 | #endif /* __ETNAVIV_MMU_H__ */ |