# IOPCIBARType ``` enum IOPCIBARType : unsigned int; ``` ## Overview\abstract BAR types for GetBARInfo ## Topics ### Enumeration Cases [`kPCIBARTypeIO`](/documentation/PCIDriverKit/IOPCIBARType/kPCIBARTypeIO) [`kPCIBARTypeM32`](/documentation/PCIDriverKit/IOPCIBARType/kPCIBARTypeM32) [`kPCIBARTypeM32PF`](/documentation/PCIDriverKit/IOPCIBARType/kPCIBARTypeM32PF) [`kPCIBARTypeM64`](/documentation/PCIDriverKit/IOPCIBARType/kPCIBARTypeM64) [`kPCIBARTypeM64PF`](/documentation/PCIDriverKit/IOPCIBARType/kPCIBARTypeM64PF) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)