@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r
@retval EFI_INVALID_PARAMETER Channel is not valid\r
@retval EFI_DEVICE_ERROR The system hardware could not map the requested information.\r
@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r
@retval EFI_INVALID_PARAMETER Channel is not valid\r
@retval EFI_DEVICE_ERROR The system hardware could not map the requested information.\r