1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_X86_IOMMU_H 3#define _ASM_X86_IOMMU_H 4 5extern const struct dma_map_ops nommu_dma_ops; 6extern int force_iommu, no_iommu; 7extern int iommu_detected; 8extern int iommu_pass_through; 9 10int x86_dma_supported(struct device *dev, u64 mask); 11 12/* 10 seconds */ 13#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) 14 15#endif /* _ASM_X86_IOMMU_H */ 16