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