projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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__ */ |