diff options
Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_mmu.h')
| -rw-r--r-- | drivers/gpu/drm/etnaviv/etnaviv_mmu.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.h b/drivers/gpu/drm/etnaviv/etnaviv_mmu.h new file mode 100644 index 000000000000..fff215a47630 --- /dev/null +++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.h @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2015 Etnaviv Project + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __ETNAVIV_MMU_H__ +#define __ETNAVIV_MMU_H__ + +#include <linux/iommu.h> + +enum etnaviv_iommu_version { + ETNAVIV_IOMMU_V1 = 0, + ETNAVIV_IOMMU_V2, +}; + +struct etnaviv_gpu; +struct etnaviv_vram_mapping; + +struct etnaviv_iommu_ops { + struct iommu_ops ops; + size_t (*dump_size)(struct iommu_domain *); + void (*dump)(struct iommu_domain *, void *); +}; + +struct etnaviv_iommu { + struct etnaviv_gpu *gpu; + struct iommu_domain *domain; + + enum etnaviv_iommu_version version; + + /* memory manager for GPU address area */ + struct mutex lock; + struct list_head mappings; + struct drm_mm mm; + u32 last_iova; + bool need_flush; +}; + +struct etnaviv_gem_object; + +int etnaviv_iommu_attach(struct etnaviv_iommu *iommu, const char **names, + int cnt); +int etnaviv_iommu_map(struct etnaviv_iommu *iommu, u32 iova, + struct sg_table *sgt, unsigned len, int prot); +int etnaviv_iommu_unmap(struct etnaviv_iommu *iommu, u32 iova, + struct sg_table *sgt, unsigned len); +int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu, + struct etnaviv_gem_object *etnaviv_obj, u32 memory_base, + struct etnaviv_vram_mapping *mapping); +void etnaviv_iommu_unmap_gem(struct etnaviv_iommu *mmu, + struct etnaviv_vram_mapping *mapping); +void etnaviv_iommu_destroy(struct etnaviv_iommu *iommu); + +size_t etnaviv_iommu_dump_size(struct etnaviv_iommu *iommu); +void etnaviv_iommu_dump(struct etnaviv_iommu *iommu, void *buf); + +struct etnaviv_iommu *etnaviv_iommu_new(struct etnaviv_gpu *gpu, + struct iommu_domain *domain, enum etnaviv_iommu_version version); + +#endif /* __ETNAVIV_MMU_H__ */ |