OpenCloudOS-Kernel/arch/x86/include/asm/iommu.h

15 lines
353 B
C

#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 */