+/**\r
+ Registers a PCI device so PCI configuration registers may be accessed after \r
+ SetVirtualAddressMap().\r
+ \r
+ Registers the PCI device specified by Address so all the PCI configuration \r
+ registers associated with that PCI device may be accessed after SetVirtualAddressMap() \r
+ is called.\r
+ \r
+ If Address > 0x0FFFFFFF, then ASSERT().\r
+\r
+ @param Address Address that encodes the PCI Bus, Device, Function and\r
+ Register.\r
+ \r
+ @retval RETURN_SUCCESS The PCI device was registered for runtime access.\r
+ @retval RETURN_UNSUPPORTED An attempt was made to call this function \r
+ after ExitBootServices().\r
+ @retval RETURN_UNSUPPORTED The resources required to access the PCI device\r
+ at runtime could not be mapped.\r
+ @retval RETURN_OUT_OF_RESOURCES There are not enough resources available to\r
+ complete the registration.\r
+\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+PciExpressRegisterForRuntimeAccess (\r
+ IN UINTN Address\r
+ );\r
+\r