Peripheral Component Interconnect (PCI) Bus Drivers
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Purpose This section describes Peripheral Component Interconnect (PCI) bus client drivers and describes how you can access the configuration space of PCI devices. A PCI bus is a dynamically configurable I/O bus that is described by the PCI Local Bus Specification. Where Applicable The PCI bus driver manages requests for configuration space information. Developer Audience This section is intended for use by C programmers. Before you use this section, you should understand basic driver development. For more information, see Getting Started with Windows Drivers. |
Describes how to access the configuration space of a PCI device and provides a code example of how to query for the power management capability data of a device. Describes the system-defined structures that are used by PCI bus client drivers on Windows Driver Model (WDM) platforms. |
Supported PCIe features in Windows
The following table summarizes the PCIe features that are supported by different versions of Windows. For details, see the specified sections in the official PCIe specification.
| Feature | Minimum Windows version |
|---|---|
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Optimized Buffer Flush/Fill (OBFF) See section 6.19. |
Windows 8 Windows Server 2012 |
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Latency Tolerance Reporting (LTR) Capability See section 7.25. |
Windows 8 Windows Server 2012 |
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Alternative Routing-ID Interpretation (ARI) See section 6.13. |
Windows 8 Windows Server 2012 |
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Message Signaled Interrupt (MSI/MSI-X) Support See section 6.1.4. |
Windows Vista Windows Server 2008 R2 |
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TLP Processing Hints (TPH) See section 6.17. |
Windows 8 Windows Server 2012 |
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Single Root I/O Virtualization (SR-IOV) |
Windows 8 Windows Server 2012 |