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PCI_EXPRESS_ROOT_STATUS_REGISTER union (ntddk.h)

  • Article

The PCI_EXPRESS_ROOT_STATUS_REGISTER structure describes a PCI Express (PCIe) root status register of a PCIe capability structure.

Syntax

typedef union _PCI_EXPRESS_ROOT_STATUS_REGISTER {
  struct {
    ULONG PMERequestorId  :16;
    ULONG PMEStatus  :1;
    ULONG PMEPending  :1;
    ULONG Rsvd  :14;
  };
  ULONG  AsULONG;
} PCI_EXPRESS_ROOT_STATUS_REGISTER, *PPCI_EXPRESS_ROOT_STATUS_REGISTER;

Members

DUMMYSTRUCTNAME

DUMMYSTRUCTNAME.PMERequestorId

A PCI_EXPRESS_PME_REQUESTOR_ID structure that describes the power management event (PME) requester identifier of the last PME requester.

DUMMYSTRUCTNAME.PMEStatus

A single bit that indicates that a power management event (PME) was asserted by the requester identified by the PMERequestorId member.

DUMMYSTRUCTNAME.PMEPending

A single bit that indicates that another power management event (PME) is pending while the PMEStatus bit is set.

DUMMYSTRUCTNAME.Rsvd

Reserved.

AsULONG

A ULONG representation of the contents of the PCI_EXPRESS_ROOT_STATUS_REGISTER structure.

Remarks

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

A PCI_EXPRESS_ROOT_STATUS_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

PCI_EXPRESS_PME_REQUESTOR_ID