| The etnaviv authors | a8c21a5 | 2015-12-03 18:21:29 +0100 | [diff] [blame^] | 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__ */ |