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 

    10 extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len);

    11 

    12 /* 10 seconds */

    13 #define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)

    14 

    15 #ifdef CONFIG_GART_IOMMU

    16 extern int gart_iommu_aperture;

    17 extern int gart_iommu_aperture_allowed;

    18 extern int gart_iommu_aperture_disabled;

    19 

    20 extern void early_gart_iommu_check(void);

    21 extern void gart_iommu_init(void);

    22 extern void gart_iommu_shutdown(void);

    23 extern void __init gart_parse_options(char *);

    24 extern void gart_iommu_hole_init(void);

    25 

    26 #else

    27 #define gart_iommu_aperture            0

    28 #define gart_iommu_aperture_allowed    0

    29 #define gart_iommu_aperture_disabled   1

    30 

    31 static inline void early_gart_iommu_check(void)

    32 {

    33 }

    34 static inline void gart_iommu_init(void)

    35 {

    36 }

    37 static inline void gart_iommu_shutdown(void)

    38 {

    39 }

    40 static inline void gart_parse_options(char *options)

    41 {

    42 }

    43 static inline void gart_iommu_hole_init(void)

    44 {

    45 }

    46 #endif

    47 

    48 #endif /* _ASM_X86_IOMMU_H */