arch/x86/include/asm/iommu.h


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#ifndef _ASM_X86_IOMMU_H
#define _ASM_X86_IOMMU_H

extern const struct dma_map_ops nommu_dma_ops;
extern int force_iommu, no_iommu;
extern int iommu_detected;
extern int iommu_pass_through;

int x86_dma_supported(struct device *dev, u64 mask);

/* 10 seconds */
#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)

#endif /* _ASM_X86_IOMMU_H */