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