77 lines
2 KiB
C
77 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2015-2018 Etnaviv Project
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*/
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#ifndef __ETNAVIV_MMU_H__
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#define __ETNAVIV_MMU_H__
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#define ETNAVIV_PROT_READ (1 << 0)
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#define ETNAVIV_PROT_WRITE (1 << 1)
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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_domain;
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struct etnaviv_iommu_domain_ops {
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void (*free)(struct etnaviv_iommu_domain *);
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int (*map)(struct etnaviv_iommu_domain *domain, unsigned long iova,
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phys_addr_t paddr, size_t size, int prot);
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size_t (*unmap)(struct etnaviv_iommu_domain *domain, unsigned long iova,
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size_t size);
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size_t (*dump_size)(struct etnaviv_iommu_domain *);
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void (*dump)(struct etnaviv_iommu_domain *, void *);
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};
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struct etnaviv_iommu_domain {
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struct device *dev;
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void *bad_page_cpu;
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dma_addr_t bad_page_dma;
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u64 base;
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u64 size;
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const struct etnaviv_iommu_domain_ops *ops;
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};
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struct etnaviv_iommu {
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struct etnaviv_gpu *gpu;
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struct etnaviv_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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unsigned int flush_seq;
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};
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struct etnaviv_gem_object;
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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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int etnaviv_iommu_get_suballoc_va(struct etnaviv_gpu *gpu, dma_addr_t paddr,
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struct drm_mm_node *vram_node, size_t size,
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u32 *iova);
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void etnaviv_iommu_put_suballoc_va(struct etnaviv_gpu *gpu,
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struct drm_mm_node *vram_node, size_t size,
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u32 iova);
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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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void etnaviv_iommu_destroy(struct etnaviv_iommu *iommu);
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void etnaviv_iommu_restore(struct etnaviv_gpu *gpu);
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#endif /* __ETNAVIV_MMU_H__ */
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