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PCI_EXPRESS_ROOT_CAPABILITIES_REGISTER union (ntddk.h)

  • Article

The PCI_EXPRESS_ROOT_CAPABILITIES_REGISTER structure describes a PCI Express (PCIe) root capabilities register of a PCIe capability structure.

Syntax

typedef union _PCI_EXPRESS_ROOT_CAPABILITIES_REGISTER {
  struct {
    USHORT CRSSoftwareVisibility  :1;
    USHORT Rsvd  :15;
  };
  USHORT AsUSHORT;
} PCI_EXPRESS_ROOT_CAPABILITIES_REGISTER, *PPCI_EXPRESS_ROOT_CAPABILITIES_REGISTER;

Members

DUMMYSTRUCTNAME

DUMMYSTRUCTNAME.CRSSoftwareVisibility

A single bit that indicates that the root port is capable of returning configuration request retry status (CRS) completion status to software.

DUMMYSTRUCTNAME.Rsvd

Reserved.

AsUSHORT

A USHORT representation of the contents of the PCI_EXPRESS_ROOT_CAPABILITIES_REGISTER structure.

Remarks

The PCI_EXPRESS_ROOT_CAPABILITIES_REGISTER structure is available in Windows Server 2008 and later versions of Windows.

A PCI_EXPRESS_ROOT_CAPABILITIES_REGISTER structure is contained in the PCI_EXPRESS_CAPABILITY structure.

Requirements

Requirement Value
Header ntddk.h (include Ntddk.h, Miniport.h)

See also

PCI_EXPRESS_CAPABILITY