| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* Copyright (C) 2018 Intel Corporation */ |
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| 3 | /* Copyright 2018 Google LLC. */ |
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| 4 | |
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| 5 | #ifndef __IPU3_MMU_H |
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| 6 | #define __IPU3_MMU_H |
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| 7 | |
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| 8 | #define IPU3_PAGE_SHIFT 12 |
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| 9 | #define IPU3_PAGE_SIZE (1UL << IPU3_PAGE_SHIFT) |
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| 10 | |
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| 11 | /** |
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| 12 | * struct imgu_mmu_info - Describes mmu geometry |
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| 13 | * |
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| 14 | * @aperture_start: First address that can be mapped |
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| 15 | * @aperture_end: Last address that can be mapped |
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| 16 | */ |
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| 17 | struct imgu_mmu_info { |
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| 18 | dma_addr_t aperture_start; |
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| 19 | dma_addr_t aperture_end; |
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| 20 | }; |
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| 21 | |
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| 22 | struct device; |
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| 23 | struct scatterlist; |
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| 24 | |
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| 25 | struct imgu_mmu_info *imgu_mmu_init(struct device *parent, void __iomem *base); |
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| 26 | void imgu_mmu_exit(struct imgu_mmu_info *info); |
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| 27 | void imgu_mmu_suspend(struct imgu_mmu_info *info); |
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| 28 | void imgu_mmu_resume(struct imgu_mmu_info *info); |
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| 29 | |
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| 30 | int imgu_mmu_map(struct imgu_mmu_info *info, unsigned long iova, |
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| 31 | phys_addr_t paddr, size_t size); |
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| 32 | size_t imgu_mmu_unmap(struct imgu_mmu_info *info, unsigned long iova, |
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| 33 | size_t size); |
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| 34 | size_t imgu_mmu_map_sg(struct imgu_mmu_info *info, unsigned long iova, |
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| 35 | struct scatterlist *sg, unsigned int nents); |
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| 36 | #endif |
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| 37 | |
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