WHEA_AER_BRIDGE_DESCRIPTOR structure (ntddk.h)

Article
02/28/2023

The WHEA_AER_BRIDGE_DESCRIPTOR structure describes a PCI Express (PCIe) bridge error source.

Syntax

typedef struct _WHEA_AER_BRIDGE_DESCRIPTOR {
  USHORT                      Type;
  BOOLEAN                     Enabled;
  UCHAR                       Reserved;
  ULONG                       BusNumber;
  WHEA_PCI_SLOT_NUMBER        Slot;
  USHORT                      DeviceControl;
  AER_BRIDGE_DESCRIPTOR_FLAGS Flags;
  ULONG                       UncorrectableErrorMask;
  ULONG                       UncorrectableErrorSeverity;
  ULONG                       CorrectableErrorMask;
  ULONG                       AdvancedCapsAndControl;
  ULONG                       SecondaryUncorrectableErrorMask;
  ULONG                       SecondaryUncorrectableErrorSev;
  ULONG                       SecondaryCapsAndControl;
} WHEA_AER_BRIDGE_DESCRIPTOR, *PWHEA_AER_BRIDGE_DESCRIPTOR;

Members

Type

The type of error source descriptor. This member is always set to WHEA_ERROR_SOURCE_DESCRIPTOR_TYPE_AERBRIDGE.

Enabled

A Boolean value that indicates if the error source is enabled.

Reserved

Reserved for system use.

BusNumber

The bridge's primary bus number.

Slot

A WHEA_PCI_SLOT_NUMBER structure that describes the logical PCI slot where the bridge is located in the system.

DeviceControl

The contents of the bridge's Device Control register.

Flags

An AER_BRIDGE_DESCRIPTOR_FLAGS union that indicates which of the members of the WHEA_AER_BRIDGE_DESCRIPTOR structure can be written to by the operating system. The AER_BRIDGE_DESCRIPTOR_FLAGS union is defined as follows:

typedef union _AER_BRIDGE_DESCRIPTOR_FLAGS {
  struct {
    USHORT  UncorrectableErrorMaskRW:1;
    USHORT  UncorrectableErrorSeverityRW:1;
    USHORT  CorrectableErrorMaskRW:1;
    USHORT  AdvancedCapsAndControlRW:1;
    USHORT  SecondaryUncorrectableErrorMaskRW:1;
    USHORT  SecondaryUncorrectableErrorSevRW:1;
    USHORT  SecondaryCapsAndControlRW:1;
    USHORT  Reserved:9;
  };
  USHORT  AsUSHORT;
} AER_BRIDGE_DESCRIPTOR_FLAGS, *PAER_BRIDGE_DESCRIPTOR_FLAGS

UncorrectableErrorMaskRW

A single bit that indicates that the operating system can write to the UncorrectableErrorMask member of the WHEA_AER_BRIDGE_DESCRIPTOR structure.

UncorrectableErrorSeverityRW

A single bit that indicates that the operating system can write to the UncorrectableErrorSeverity member of the WHEA_AER_BRIDGE_DESCRIPTOR structure.

CorrectableErrorMaskRW

A single bit that indicates that the operating system can write to the CorrectableErrorMask member of the WHEA_AER_BRIDGE_DESCRIPTOR structure.

AdvancedCapsAndControlRW

A single bit that indicates that the operating system can write to the AdvancedCapsAndControl member of the WHEA_AER_BRIDGE_DESCRIPTOR structure.

SecondaryUncorrectableErrorMaskRW

A single bit that indicates that the operating system can write to the SecondaryUncorrectableErrorMask member of the WHEA_AER_BRIDGE_DESCRIPTOR structure.

SecondaryUncorrectableErrorSevRW

A single bit that indicates that the operating system can write to the SecondaryUncorrectableErrorSev member of the WHEA_AER_BRIDGE_DESCRIPTOR structure.

SecondaryCapsAndControlRW

A single bit that indicates that the operating system can write to the SecondaryCapsAndControl member of the WHEA_AER_BRIDGE_DESCRIPTOR structure.

Reserved

Reserved for system use.

AsUSHORT

A USHORT representation of the contents of the AER_ROOTPORT_DESCRIPTOR_FLAGS union.

UncorrectableErrorMask

The contents of the bridge's Uncorrectable Error Mask register.

UncorrectableErrorSeverity

The contents of the bridge's Uncorrectable Error Severity register.

CorrectableErrorMask

The contents of the bridge's Correctable Error Mask register.

AdvancedCapsAndControl

The contents of the bridge's Advanced Error Capabilities and Control register.

SecondaryUncorrectableErrorMask

The contents of the bridge's Secondary Uncorrectable Error Mask register.

SecondaryUncorrectableErrorSev

The contents of the bridge's Secondary Uncorrectable Error Severity register.

SecondaryCapsAndControl

The contents of the bridge's Secondary Error Capabilities and Control register.

Remarks

A WHEA_AER_BRIDGE_DESCRIPTOR structure is contained within the WHEA_ERROR_SOURCE_DESCRIPTOR structure.

Requirements

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