VOID
FxPoxInterface::ComponentIdleCallback(
__in PVOID Context,
__in ULONG Component
)
{
PPOX_SETTINGS poxSettings = NULL;
FxPoxInterface * pThis = NULL;
pThis = (FxPoxInterface*) Context;
DoTraceLevelMessage(
pThis->m_PkgPnp->GetDriverGlobals(),
TRACE_LEVEL_VERBOSE,
TRACINGPNP,
"WDFDEVICE 0x%p !devobj 0x%p PO_FX_COMPONENT_IDLE_CONDITION_CALLBACK "
"invoked.",
pThis->m_PkgPnp->GetDevice()->GetHandle(),
pThis->m_PkgPnp->GetDevice()->GetDeviceObject()
);
//
// If the client driver has specified power framework settings, retrieve
// them.
//
poxSettings = pThis->GetPowerFrameworkSettings();
//
// If the client driver has specified a component-idle callback, invoke it
//
if ((NULL != poxSettings) &&
(NULL != poxSettings->ComponentIdleConditionCallback)) {
DoTraceLevelMessage(
pThis->m_PkgPnp->GetDriverGlobals(),
TRACE_LEVEL_VERBOSE,
TRACINGPNP,
"WDFDEVICE 0x%p !devobj 0x%p Invoking client driver's "
"PO_FX_COMPONENT_IDLE_CONDITION_CALLBACK.",
pThis->m_PkgPnp->GetDevice()->GetHandle(),
pThis->m_PkgPnp->GetDevice()->GetDeviceObject()
);
poxSettings->ComponentIdleConditionCallback(
poxSettings->PoFxDeviceContext,
Component
);
} else {
//
// We're being notified that we're idle, but there is no action that we
// need to take here. We power down the device only when we get the
// device-power-not-required event.
//
PoFxCompleteIdleCondition(pThis->m_PoHandle, Component);
}
return;
}
VOID
PcPowerFxComponentIdleConditionCallback(
_In_ PVOID Context,
_In_ ULONG Component
)
{
PDEVICE_OBJECT DeviceObject = (PDEVICE_OBJECT)Context;
PortClassDeviceContext* pExtension = static_cast<PortClassDeviceContext*>(DeviceObject->DeviceExtension);
DPF(D_VERBOSE, ("PcPowerFxComponentIdleConditionCallback Context %p, Component %d",
Context, Component));
PoFxCompleteIdleCondition(pExtension->m_poHandle, Component);
}
///////////////////////////////////////////////////////////////////////////////
// SmplQueueEvtStatePoFxStopComplete
// Callback invoked by KMDF when stop transiton of the supplied queue has
// completed.
///////////////////////////////////////////////////////////////////////////////
VOID
SmplQueueEvtStatePoFxStopComplete(
_In_ WDFQUEUE Queue,
_In_ WDFCONTEXT Context
)
{
DEVICE_CONTEXT *pDeviceContext = WdfObjectGetTypedContext(WdfIoQueueGetDevice(Queue), DEVICE_CONTEXT);
UNREFERENCED_PARAMETER(Context);
//
// Queue has been stopped. Complete the idle transition.
//
PoFxCompleteIdleCondition(pDeviceContext->PoHandle, 0 /* Component */);
} // end SmplQueueEvtStatePoFxStopComplete
VOID
SingleCompEvtQueueStopComplete(
_In_ WDFQUEUE Queue,
_In_ WDFCONTEXT Context
)
/*++
Routine Description:
Callback invoked by KMDF when stop transiton of the supplied queue has
completed.
Arguments:
Queue - Queue whose stop transition has completed
Context - The context we supply while calling WdfIoQueueStop.
Return value:
None
--*/
{
PFDO_DATA fdoContext;
WDFDEVICE device;
UNREFERENCED_PARAMETER(Context);
device = WdfIoQueueGetDevice(Queue);
fdoContext = WdfObjectGetTypedContext(device, FDO_DATA);
if (0 == InterlockedDecrement(&(fdoContext->QueueStopCount))) {
//
// All the queues have been stopped. Mark ourselves as idle and complete
// the idle transition.
//
fdoContext->IsActive = FALSE;
PoFxCompleteIdleCondition(fdoContext->PoHandle, 0 /* Component */);
}
}
