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

16 lines
414 B
C

#ifndef _ASM_X86_IOMMU_H
#define _ASM_X86_IOMMU_H
extern void pci_iommu_shutdown(void);
extern void no_iommu_init(void);
extern struct dma_mapping_ops nommu_dma_ops;
extern int force_iommu, no_iommu;
extern int iommu_detected;
extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len);
/* 10 seconds */
#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
#endif /* _ASM_X86_IOMMU_H */