38 lines
860 B
C
38 lines
860 B
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef ASMARM_DMA_IOMMU_H
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#define ASMARM_DMA_IOMMU_H
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#ifdef __KERNEL__
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#include <linux/err.h>
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#include <linux/mm_types.h>
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#include <linux/scatterlist.h>
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#include <linux/dma-debug.h>
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#include <linux/kref.h>
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#include <linux/dma-mapping-fast.h>
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struct dma_iommu_mapping {
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/* iommu specific data */
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struct iommu_domain *domain;
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bool init;
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struct kref kref;
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const struct dma_map_ops *ops;
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/* Protects bitmap */
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spinlock_t lock;
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void *bitmap;
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size_t bits;
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dma_addr_t base;
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struct dma_fast_smmu_mapping *fast;
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};
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#ifdef CONFIG_ARM64_DMA_USE_IOMMU
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void arm_iommu_put_dma_cookie(struct iommu_domain *domain);
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#else /* !CONFIG_ARM64_DMA_USE_IOMMU */
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static inline void arm_iommu_put_dma_cookie(struct iommu_domain *domain) {}
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#endif /* CONFIG_ARM64_DMA_USE_IOMMU */
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#endif /* __KERNEL__ */
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#endif
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