NTSTATUS
BalloonEvtDeviceD0Exit(
IN WDFDEVICE Device,
IN WDF_POWER_DEVICE_STATE TargetState
)
{
PDEVICE_CONTEXT devCtx = GetDeviceContext(Device);
UNREFERENCED_PARAMETER(TargetState);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "<--> %s\n", __FUNCTION__);
PAGED_CODE();
if (devCtx->evLowMem)
{
ZwClose(devCtx->hLowMem);
devCtx->evLowMem = NULL;
}
/*
* interrupts were already disabled (between BalloonEvtDeviceD0ExitPreInterruptsDisabled and this call)
* we should flush StatWorkItem before calling BalloonTerm which will delete virtio queues
*/
if (devCtx->StatWorkItem)
{
WdfWorkItemFlush(devCtx->StatWorkItem);
devCtx->StatWorkItem = NULL;
}
BalloonTerm(Device);
return STATUS_SUCCESS;
}
NTSTATUS
BalloonEvtDeviceD0Exit(
IN WDFDEVICE Device,
IN WDF_POWER_DEVICE_STATE TargetState
)
{
#if (WINVER >= 0x0501)
PDEVICE_CONTEXT devCtx = GetDeviceContext(Device);
#endif // (WINVER >= 0x0501)
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "<--> %s\n", __FUNCTION__);
PAGED_CODE();
#if (WINVER >= 0x0501)
if (devCtx->evLowMem)
{
ZwClose(devCtx->hLowMem);
devCtx->evLowMem = NULL;
}
#endif // (WINVER >= 0x0501)
BalloonTerm(Device);
return STATUS_SUCCESS;
}
NTSTATUS
BalloonEvtDeviceD0Entry(
IN WDFDEVICE Device,
IN WDF_POWER_DEVICE_STATE PreviousState
)
{
NTSTATUS status = STATUS_SUCCESS;
PDEVICE_CONTEXT devCtx = GetDeviceContext(Device);
UNREFERENCED_PARAMETER(PreviousState);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "--> %s\n", __FUNCTION__);
status = BalloonInit(Device);
if(!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, DBG_PNP,
"BalloonInit failed with status 0x%08x\n", status);
BalloonTerm(Device);
return status;
}
status = BalloonCreateWorkerThread(Device);
if(!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, DBG_PNP,
"BalloonCreateWorkerThread failed with status 0x%08x\n", status);
}
devCtx->evLowMem = IoCreateNotificationEvent(
(PUNICODE_STRING)&evLowMemString, &devCtx->hLowMem);
return status;
}
