WDF_INTERRUPT_INFO structure (wudfinterrupt.h)
[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]
The WDF_INTERRUPT_INFO structure contains information about a device's interrupt resource.
Syntax
typedef struct _WDF_INTERRUPT_INFO {
ULONG Size;
ULONG64 Reserved1;
KAFFINITY TargetProcessorSet;
ULONG Reserved2;
ULONG MessageNumber;
ULONG Vector;
KIRQL Irql;
KINTERRUPT_MODE Mode;
WDF_INTERRUPT_POLARITY Polarity;
BOOLEAN MessageSignaled;
UCHAR ShareDisposition;
USHORT Group;
} WDF_INTERRUPT_INFO, *PWDF_INTERRUPT_INFO;
Members
Size
The size, in bytes, of this structure.
Reserved1
This member is reserved for future use.
TargetProcessorSet
A KAFFINITY-typed value that specifies the interrupt's processor affinity.
Reserved2
This member is reserved for future use.
MessageNumber
If the MessageSignaled member is TRUE, this is the interrupt's message number.
Vector
The interrupt vector.
Irql
The DIRQL at which the device interrupts.
Mode
A KINTERRUPT_MODE-typed enumerator that indicates whether the interrupt is level-triggered or edge-triggered. The KINTERRUPT_MODE enumeration type is defined in Wudfwdm.h.
Polarity
A WDF_INTERRUPT_POLARITY-typed enumerator that identifies the interrupt signal's polarity.
MessageSignaled
A Boolean value that, if TRUE, indicates that the interrupt is message-signaled. If FALSE, the interrupt is not message-signaled.
ShareDisposition
A CM_SHARE_DISPOSITION-typed enumerator that indicates whether the interrupt is being shared. The value is CmResourceShareShared if the interrupt is being shared or CmResourceShareDeviceExclusive if the interrupt is not being shared. The CM_SHARE_DISPOSITION enumeration type is defined in Wudfwdm.h.
Group
A value that identifies the processor group that the TargetProcessorSet member applies to. This value is zero if the computer has only one processor group or if the operating system does not support processor groups. The Group member is available in version 1.9 and later versions of KMDF.
Remarks
The WDF_INTERRUPT_INFO structure is used as input to the IWDFInterrupt::GetInfo method. To initialize a WDF_INTERRUPT_INFO structure, your driver should call WDF_INTERRUPT_INFO_INIT before calling IWDFInterrupt::GetInfo.
Requirements
| Requirement | Value |
|---|---|
| Minimum UMDF version | 1.11 |
| Header | wudfinterrupt.h |