_Use_decl_annotations_
VOID
OnDeviceContextCleanup(
WDFOBJECT Object
)
/*++
Routine Description:
This event handles cleanup of the device object.
Arguments:
Object - Pointer to the object to cleanup
Return Value:
None
--*/
{
PDEVICE_CONTEXT deviceContext;
deviceContext = GetContext(Object);
//
// release all resources from the device object (there is only one)
//
if (deviceContext->dmaBuffer)
{
MmFreeContiguousMemorySpecifyCache(deviceContext->dmaBuffer, DMA_BUFFER_SIZE, MmNonCached);
}
if (deviceContext->dmaCb)
{
// For cleanup functions of WDFDEVICE objects the IRQL is IRQL_PASSIVE. So we are save to call.
#pragma warning(push)
#pragma warning(disable:28118)
MmFreeContiguousMemorySpecifyCache(deviceContext->dmaCb, deviceContext->dmaControlDataSize, MmNonCached);
#pragma warning(pop)
}
}
VOID
SpReleaseAdapterResources(
IN PADAPTER_EXTENSION Adapter,
IN BOOLEAN Surprise
)
/*++
Routine Description:
This function deletes all of the storage associated with a device
extension, disconnects from the timers and interrupts and then deletes the
object. This function can be called at any time during the initialization.
Arguments:
Adapter - Supplies a pointer to the device extesnion to be deleted.
Return Value:
None.
--*/
{
PCOMMON_EXTENSION commonExtension = &(Adapter->CommonExtension);
ULONG j;
PVOID tempPointer;
PAGED_CODE();
#if DBG
if(!Surprise) {
//
// Free the Remove tracking lookaside list.
//
ExDeleteNPagedLookasideList(&(commonExtension->RemoveTrackingLookasideList));
}
#endif
//
// Stop the time and disconnect the interrupt if they have been
// initialized. The interrupt object is connected after
// timer has been initialized, and the interrupt object is connected, but
// before the timer is started.
//
if(Adapter->DeviceObject->Timer != NULL) {
IoStopTimer(Adapter->DeviceObject);
KeCancelTimer(&(Adapter->MiniPortTimer));
}
if(Adapter->SynchronizeExecution != SpSynchronizeExecution) {
if (Adapter->InterruptObject) {
IoDisconnectInterrupt(Adapter->InterruptObject);
}
if (Adapter->InterruptObject2) {
IoDisconnectInterrupt(Adapter->InterruptObject2);
Adapter->InterruptObject2 = NULL;
}
//
// SpSynchronizeExecution expects to get a pointer to the
// adapter extension as the "interrupt" parameter.
//
Adapter->InterruptObject = (PVOID) Adapter;
Adapter->SynchronizeExecution = SpSynchronizeExecution;
}
//
// Delete the miniport's device extension
//
if (Adapter->HwDeviceExtension != NULL) {
PHW_DEVICE_EXTENSION devExt =
CONTAINING_RECORD(Adapter->HwDeviceExtension,
HW_DEVICE_EXTENSION,
HwDeviceExtension);
ExFreePool(devExt);
Adapter->HwDeviceExtension = NULL;
}
//
// Free the configuration information structure.
//
if (Adapter->PortConfig) {
ExFreePool(Adapter->PortConfig);
Adapter->PortConfig = NULL;
}
//
// Deallocate SCSIPORT WMI REGINFO information, if any.
//
SpWmiDestroySpRegInfo(Adapter->DeviceObject);
//
// Free the common buffer.
//
if (Adapter->SrbExtensionBuffer != NULL &&
Adapter->CommonBufferSize != 0) {
if (Adapter->DmaAdapterObject == NULL) {
//
// Since there is no adapter just free the non-paged pool.
//
ExFreePool(Adapter->SrbExtensionBuffer);
} else {
#if defined(_X86_)
if(Adapter->UncachedExtensionIsCommonBuffer == FALSE) {
MmFreeContiguousMemorySpecifyCache(Adapter->SrbExtensionBuffer,
Adapter->CommonBufferSize,
MmNonCached);
} else
#endif
{
HalFreeCommonBuffer(
Adapter->DmaAdapterObject,
Adapter->CommonBufferSize,
Adapter->PhysicalCommonBuffer,
Adapter->SrbExtensionBuffer,
FALSE);
}
}
Adapter->SrbExtensionBuffer = NULL;
}
//
// Free the SRB data array.
//
if (Adapter->SrbDataListInitialized) {
if(Adapter->EmergencySrbData != NULL) {
ExFreeToNPagedLookasideList(
&Adapter->SrbDataLookasideList,
Adapter->EmergencySrbData);
Adapter->EmergencySrbData = NULL;
}
ExDeleteNPagedLookasideList(&Adapter->SrbDataLookasideList);
Adapter->SrbDataListInitialized = FALSE;
}
if (Adapter->InquiryBuffer != NULL) {
ExFreePool(Adapter->InquiryBuffer);
Adapter->InquiryBuffer = NULL;
}
if (Adapter->InquirySenseBuffer != NULL) {
ExFreePool(Adapter->InquirySenseBuffer);
Adapter->InquirySenseBuffer = NULL;
}
if (Adapter->InquiryIrp != NULL) {
IoFreeIrp(Adapter->InquiryIrp);
Adapter->InquiryIrp = NULL;
}
if (Adapter->InquiryMdl != NULL) {
IoFreeMdl(Adapter->InquiryMdl);
Adapter->InquiryMdl = NULL;
}
//
// Free the Scatter Gather lookaside list.
//
if (Adapter->MediumScatterGatherListInitialized) {
ExDeleteNPagedLookasideList(
&Adapter->MediumScatterGatherLookasideList);
Adapter->MediumScatterGatherListInitialized = FALSE;
}
//
// Unmap any mapped areas.
//
SpReleaseMappedAddresses(Adapter);
//
// If we've got any resource lists allocated still we should free them
// now.
//
if(Adapter->AllocatedResources != NULL) {
ExFreePool(Adapter->AllocatedResources);
Adapter->AllocatedResources = NULL;
}
if(Adapter->TranslatedResources != NULL) {
ExFreePool(Adapter->TranslatedResources);
Adapter->TranslatedResources = NULL;
}
Adapter->CommonExtension.IsInitialized = FALSE;
return;
}
