arch/x86/include/asm/iommu.h

   1 #ifndef _ASM_X86_IOMMU_H
   2 #define _ASM_X86_IOMMU_H
   3
   4 extern void pci_iommu_shutdown(void);
   5 extern void no_iommu_init(void);
   6 extern struct dma_mapping_ops nommu_dma_ops;
   7 extern int force_iommu, no_iommu;
   8 extern int iommu_detected;
   9 extern int dmar_disabled;
  10 extern int forbid_dac;
  11
  12 extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len);
  13
  14 /* 10 seconds */
  15 #define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
  16
  17 #ifdef CONFIG_GART_IOMMU
  18 extern int gart_iommu_aperture;
  19 extern int gart_iommu_aperture_allowed;
  20 extern int gart_iommu_aperture_disabled;
  21
  22 extern void early_gart_iommu_check(void);
  23 extern void gart_iommu_init(void);
  24 extern void gart_iommu_shutdown(void);
  25 extern void __init gart_parse_options(char *);
  26 extern void gart_iommu_hole_init(void);
  27
  28 #else
  29 #define gart_iommu_aperture            0
  30 #define gart_iommu_aperture_allowed    0
  31 #define gart_iommu_aperture_disabled   1
  32
  33 static inline void early_gart_iommu_check(void)
  34 {
  35 }
  36 static inline void gart_iommu_init(void)
  37 {
  38 }
  39 static inline void gart_iommu_shutdown(void)
  40 {
  41 }
  42 static inline void gart_parse_options(char *options)
  43 {
  44 }
  45 static inline void gart_iommu_hole_init(void)
  46 {
  47 }
  48 #endif
  49
  50 #endif /* _ASM_X86_IOMMU_H */