+\r
+ Status = CheckStatusRegister (PciIo, IdeRegisters);\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ IoPortForBmis = (UINT16) (IdeRegisters->BusMasterBaseAddr + BMIS_OFFSET);\r
+ RegisterValue = IdeReadPortB (PciIo, IoPortForBmis);\r