!wdfkd.wdfdevice

  • Article

The !wdfkd.wdfdevice extension displays information that is associated with a WDFDEVICE-typed object handle.

!wdfkd.wdfdevice Handle [Flags]

Parameters

Handle
A handle to a WDFDEVICE-typed object.

Flags
Optional. The kind of information to display. Flags can be any combination of the following bits:

Bit 0 (0x1)
The display will include verbose information about the device, such as the associated WDFCHILDLIST-typed handles, synchronization scope, and execution level.

Bit 1 (0x2)
The display will include detailed power state information.

Bit 2 (0x4)
The display will include detailed power policy state information.

Bit 3 (0x8)
The display will include detailed Plug and Play (PnP) state information.

Bit 4 (0x10)
The display will include the device object's callback functions.

DLL

Wdfkd.dll

Frameworks

KMDF 1, UMDF 2

Additional Information

For more information, see Kernel-Mode Driver Framework Debugging.

Remarks

The following example uses the !wdfkd.wdfdevice extension on a WDFDEVICE handle that represents a physical device object (PDO), without specifying any flags.

kd> !wdfdevice 0x7cad31c8 

# Dumping WDFDEVICE 0x7cad31c8
=================================

WDM PDEVICE_OBJECTs:  self 81fb00e8

Pnp state:  119 ( WdfDevStatePnpStarted )
Power state:  31f ( WdfDevStatePowerDx )
Power Pol state:  508 ( WdfDevStatePwrPolWaitingUnarmed )

Parent WDFDEVICE 7ca7b1c0
Parent states:
   Pnp state:  119 ( WdfDevStatePnpStarted )
   Power state:  307 ( WdfDevStatePowerD0 )
   Power Pol state:  565 ( WdfDevStatePwrPolStarted )

No pended pnp or power irps
Device is the power policy owner for the stack

The following example displays the same device object as the preceding example, but this time with a flag value of 0xF. This flag value, a combination of the bits 0x1, 0x2, 0x4, and 0x8, causes the display to include verbose device information, power state information, power policy state information, and PnP state information.

kd> !wdfdevice 0x7cad31c8 f 

# Dumping WDFDEVICE 0x7cad31c8
=================================

WDM PDEVICE_OBJECTs:  self 81fb00e8

Pnp state:  119 ( WdfDevStatePnpStarted )
Power state:  31f ( WdfDevStatePowerDx )
Power Pol state:  508 ( WdfDevStatePwrPolWaitingUnarmed )

Parent WDFDEVICE 7ca7b1c0
Parent states:
   Pnp state:  119 ( WdfDevStatePnpStarted )
   Power state:  307 ( WdfDevStatePowerD0 )
   Power Pol state:  565 ( WdfDevStatePwrPolStarted )

No pended pnp or power irps
Device is the power policy owner for the stack

Pnp state history:
[0] WdfDevStatePnpObjectCreated (0x100)
[1] WdfDevStatePnpInit (0x105)
[2] WdfDevStatePnpInitStarting (0x106)
[3] WdfDevStatePnpHardwareAvailable (0x108)
[4] WdfDevStatePnpEnableInterfaces (0x109)
[5] WdfDevStatePnpStarted (0x119)

Power state history:
[0] WdfDevStatePowerD0StartingConnectInterrupt (0x310)
[1] WdfDevStatePowerD0StartingDmaEnable (0x311)
[2] WdfDevStatePowerD0StartingStartSelfManagedIo (0x312)
[3] WdfDevStatePowerDecideD0State (0x313)
[4] WdfDevStatePowerD0BusWakeOwner (0x309)
[5] WdfDevStatePowerGotoDx (0x31a)
[6] WdfDevStatePowerGotoDxIoStopped (0x31c)
[7] WdfDevStatePowerDx (0x31f)

Power policy state history:
[0] WdfDevStatePwrPolStarting (0x501)
[1] WdfDevStatePwrPolStartingSucceeded (0x502)
[2] WdfDevStatePwrPolStartingDecideS0Wake (0x504)
[3] WdfDevStatePwrPolStartedIdleCapable (0x505)
[4] WdfDevStatePwrPolTimerExpiredNoWake (0x506)
[5] WdfDevStatePwrPolTimerExpiredNoWakeCompletePowerDown (0x507)
[6] WdfDevStatePwrPolWaitingUnarmedQueryIdle (0x509)
[7] WdfDevStatePwrPolWaitingUnarmed (0x508)

WDFCHILDLIST Handles:
 !WDFCHILDLIST 0x7ce710c8

SyncronizationScope is WdfSynchronizationScopeNone
ExecutionLevel is WdfExecutionLevelDispatch