xref: /openbmc/linux/arch/x86/include/asm/iommu.h (revision 5d0e4d78)
1 #ifndef _ASM_X86_IOMMU_H
2 #define _ASM_X86_IOMMU_H
3 
4 extern const struct dma_map_ops nommu_dma_ops;
5 extern int force_iommu, no_iommu;
6 extern int iommu_detected;
7 extern int iommu_pass_through;
8 
9 int 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