+/**\r
+ Get PCI device information from DMAR DevScopeEntry.\r
+\r
+ @param[in] Segment The segment number.\r
+ @param[in] DmarDevScopeEntry DMAR DevScopeEntry\r
+ @param[out] Bus The bus number.\r
+ @param[out] Device The device number.\r
+ @param[out] Function The function number.\r
+\r
+ @retval EFI_SUCCESS The PCI device information is returned.\r
+**/\r
+EFI_STATUS\r
+GetPciBusDeviceFunction (\r
+ IN UINT16 Segment,\r
+ IN EFI_ACPI_DMAR_DEVICE_SCOPE_STRUCTURE_HEADER *DmarDevScopeEntry,\r
+ OUT UINT8 *Bus,\r
+ OUT UINT8 *Device,\r
+ OUT UINT8 *Function\r
+ );\r
+\r