-#ifndef _ASM_X86_DEVICE_H
-#define _ASM_X86_DEVICE_H
+#ifndef ASM_X86__DEVICE_H
+#define ASM_X86__DEVICE_H
struct dev_archdata {
#ifdef CONFIG_ACPI
void *acpi_handle;
#endif
+#ifdef CONFIG_X86_64
+struct dma_mapping_ops *dma_ops;
+#endif
+#ifdef CONFIG_DMAR
+ void *iommu; /* hook for IOMMU specific extension */
+#endif
};
-#endif /* _ASM_X86_DEVICE_H */
+#endif /* ASM_X86__DEVICE_H */