NTSTATUS
Toastmon_OpenDevice(
WDFDEVICE Device,
PUNICODE_STRING SymbolicLink,
WDFIOTARGET *Target
)
/*++
Routine Description:
Open the I/O target and preallocate any resources required
to communicate with the target device.
Arguments:
Return Value:
NTSTATUS
--*/
{
NTSTATUS status = STATUS_SUCCESS;
PTARGET_DEVICE_INFO targetDeviceInfo = NULL;
WDF_IO_TARGET_OPEN_PARAMS openParams;
WDFIOTARGET ioTarget;
WDF_OBJECT_ATTRIBUTES attributes;
PDEVICE_EXTENSION deviceExtension = GetDeviceExtension(Device);
WDF_TIMER_CONFIG wdfTimerConfig;
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&attributes, TARGET_DEVICE_INFO);
status = WdfIoTargetCreate(deviceExtension->WdfDevice,
&attributes,
&ioTarget);
if (!NT_SUCCESS(status)) {
KdPrint(("WdfIoTargetCreate failed 0x%x\n", status));
return status;
}
targetDeviceInfo = GetTargetDeviceInfo(ioTarget);
targetDeviceInfo->DeviceExtension = deviceExtension;
//
// Warning: It's not recommended to open the targetdevice
// from a pnp notification callback routine, because if
// the target device initiates any kind of PnP action as
// a result of this open, the PnP manager could deadlock.
// You should queue a workitem to do that.
// For example, SWENUM devices in conjunction with KS
// initiate an enumeration of a device when you do the
// open on the device interface.
// We can open the target device here because we know the
// toaster function driver doesn't trigger any pnp action.
//
WDF_IO_TARGET_OPEN_PARAMS_INIT_OPEN_BY_NAME(
&openParams,
SymbolicLink,
STANDARD_RIGHTS_ALL);
openParams.ShareAccess = FILE_SHARE_WRITE | FILE_SHARE_READ;
//
// Framework provides default action for all of these if you don't register
// these callbacks -it will close the handle to the target when the device is
// being query-removed and reopen it if the query-remove fails.
// In this sample, we use a periodic timers to post requests to the target.
// So we need to register these callbacks so that we can start and stop
// the timer when the state of the target device changes. Since we are
// registering these callbacks, we are now responsbile for closing and
// reopening the target.
//
openParams.EvtIoTargetQueryRemove = ToastMon_EvtIoTargetQueryRemove;
openParams.EvtIoTargetRemoveCanceled = ToastMon_EvtIoTargetRemoveCanceled;
openParams.EvtIoTargetRemoveComplete = ToastMon_EvtIoTargetRemoveComplete;
status = WdfIoTargetOpen(ioTarget, &openParams);
if (!NT_SUCCESS(status)) {
KdPrint(("WdfIoTargetOpen failed with status 0x%x\n", status));
WdfObjectDelete(ioTarget);
return status;
}
KdPrint(("Target Device 0x%x, PDO 0x%x, Fileobject 0x%x, Filehandle 0x%x\n",
WdfIoTargetWdmGetTargetDeviceObject(ioTarget),
WdfIoTargetWdmGetTargetPhysicalDevice(ioTarget),
WdfIoTargetWdmGetTargetFileObject(ioTarget),
WdfIoTargetWdmGetTargetFileHandle(ioTarget)));
//
// Create two requests - one for read and one for write.
//
WDF_OBJECT_ATTRIBUTES_INIT(&attributes);
attributes.ParentObject = ioTarget;
status = WdfRequestCreate(&attributes,
ioTarget,
&targetDeviceInfo->ReadRequest);
if (!NT_SUCCESS(status)) {
WdfObjectDelete(ioTarget);
return status;
}
WDF_OBJECT_ATTRIBUTES_INIT(&attributes);
attributes.ParentObject = ioTarget;
status = WdfRequestCreate(&attributes,
ioTarget,
&targetDeviceInfo->WriteRequest);
if (!NT_SUCCESS(status)) {
WdfObjectDelete(ioTarget);
return status;
}
//
// Create a passive timer to post requests to the I/O target.
//
WDF_TIMER_CONFIG_INIT(&wdfTimerConfig,
Toastmon_EvtTimerPostRequests);
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&attributes, TIMER_CONTEXT);
//
// Make IoTarget as parent of the timer to prevent the ioTarget
// from deleted until the dpc has runto completion.
//
attributes.ParentObject = ioTarget;
//
// By specifying WdfExecutionLevelPassive the framework will invoke
// the timer callback Toastmon_EvtTimerPostRequests at PASSIVE_LEVEL.
//
attributes.ExecutionLevel = WdfExecutionLevelPassive;
//
// Setting the AutomaticSerialization to FALSE prevents
// WdfTimerCreate to fail if the parent device object's
// execution level is set to WdfExecutionLevelPassive.
//
wdfTimerConfig.AutomaticSerialization = FALSE;
status = WdfTimerCreate(&wdfTimerConfig,
&attributes,
&targetDeviceInfo->TimerForPostingRequests
);
if(!NT_SUCCESS(status)) {
KdPrint(("WdfTimerCreate failed 0x%x\n", status));
WdfObjectDelete(ioTarget);
return status;
}
GetTimerContext(targetDeviceInfo->TimerForPostingRequests)->IoTarget = ioTarget;
//
// Start the passive timer. The first timer will be queued after 1ms interval and
// after that it will be requeued in the timer callback function.
// The value of 1 ms (lowest timer resoltion allowed on NT) is chosen here so
// that timer would fire right away.
//
WdfTimerStart(targetDeviceInfo->TimerForPostingRequests,
WDF_REL_TIMEOUT_IN_MS(1));
*Target = ioTarget;
return status;
}
NTSTATUS
FireflySetFeature(
IN PDEVICE_CONTEXT DeviceContext,
IN UCHAR PageId,
IN USHORT FeatureId,
IN BOOLEAN EnableFeature
)
/*++
Routine Description:
This routine sets the HID feature by sending HID ioctls to our device.
These IOCTLs will be handled by HIDUSB and converted into USB requests
and send to the device.
Arguments:
DeviceContext - Context for our device
PageID - UsagePage of the light control feature.
FeatureId - Usage ID of the feature.
EnanbleFeature - True to turn the light on, Falst to turn if off.
Return Value:
NT Status code
--*/
{
WDF_MEMORY_DESCRIPTOR inputDescriptor, outputDescriptor;
NTSTATUS status;
HID_COLLECTION_INFORMATION collectionInformation = {0};
PHIDP_PREPARSED_DATA preparsedData;
HIDP_CAPS caps;
USAGE usage;
ULONG usageLength;
PCHAR report;
WDFIOTARGET hidTarget;
WDF_IO_TARGET_OPEN_PARAMS openParams;
PAGED_CODE();
//
// Preinit for error.
//
preparsedData = NULL;
report = NULL;
hidTarget = NULL;
status = WdfIoTargetCreate(WdfObjectContextGetObject(DeviceContext),
WDF_NO_OBJECT_ATTRIBUTES,
&hidTarget);
if (!NT_SUCCESS(status)) {
KdPrint(("FireFly: WdfIoTargetCreate failed 0x%x\n", status));
return status;
}
//
// Open it up, write access only!
//
WDF_IO_TARGET_OPEN_PARAMS_INIT_OPEN_BY_NAME(
&openParams,
&DeviceContext->PdoName,
FILE_WRITE_ACCESS);
//
// We will let the framework to respond automatically to the pnp
// state changes of the target by closing and opening the handle.
//
openParams.ShareAccess = FILE_SHARE_WRITE | FILE_SHARE_READ;
status = WdfIoTargetOpen(hidTarget, &openParams);
if (!NT_SUCCESS(status)) {
KdPrint(("FireFly: WdfIoTargetOpen failed 0x%x\n", status));
goto ExitAndFree;
}
WDF_MEMORY_DESCRIPTOR_INIT_BUFFER(&outputDescriptor,
(PVOID) &collectionInformation,
sizeof(HID_COLLECTION_INFORMATION));
//
// Now get the collection information for this device
//
status = WdfIoTargetSendIoctlSynchronously(hidTarget,
NULL,
IOCTL_HID_GET_COLLECTION_INFORMATION,
NULL,
&outputDescriptor,
NULL,
NULL);
if (!NT_SUCCESS(status)) {
KdPrint(("FireFly: WdfIoTargetSendIoctlSynchronously failed 0x%x\n", status));
goto ExitAndFree;
}
preparsedData = (PHIDP_PREPARSED_DATA) ExAllocatePoolWithTag(
NonPagedPool, collectionInformation.DescriptorSize, 'ffly');
if (preparsedData == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
goto ExitAndFree;
}
WDF_MEMORY_DESCRIPTOR_INIT_BUFFER(&outputDescriptor,
(PVOID) preparsedData,
collectionInformation.DescriptorSize);
status = WdfIoTargetSendIoctlSynchronously(hidTarget,
NULL,
IOCTL_HID_GET_COLLECTION_DESCRIPTOR,
NULL,
&outputDescriptor,
NULL,
NULL);
if (!NT_SUCCESS(status)) {
KdPrint(("FireFly: WdfIoTargetSendIoctlSynchronously failed 0x%x\n", status));
goto ExitAndFree;
}
//
// Now get the capabilities.
//
RtlZeroMemory(&caps, sizeof(HIDP_CAPS));
status = HidP_GetCaps(preparsedData, &caps);
if (!NT_SUCCESS(status)) {
goto ExitAndFree;
}
//
// Create a report to send to the device.
//
report = (PCHAR) ExAllocatePoolWithTag(
NonPagedPool, caps.FeatureReportByteLength, 'ffly');
if (report == NULL) {
goto ExitAndFree;
}
//
// Start with a zeroed report. If we are disabling the feature, this might
// be all we need to do.
//
RtlZeroMemory(report, caps.FeatureReportByteLength);
status = STATUS_SUCCESS;
if (EnableFeature) {
//
// Edit the report to reflect the enabled feature
//
usage = FeatureId;
usageLength = 1;
status = HidP_SetUsages(
HidP_Feature,
PageId,
0,
&usage, // pointer to the usage list
&usageLength, // number of usages in the usage list
preparsedData,
report,
caps.FeatureReportByteLength
);
if (!NT_SUCCESS(status)) {
KdPrint(("FireFly: HidP_SetUsages failed 0x%x\n", status));
goto ExitAndFree;
}
}
WDF_MEMORY_DESCRIPTOR_INIT_BUFFER(&inputDescriptor,
report,
caps.FeatureReportByteLength);
status = WdfIoTargetSendIoctlSynchronously(hidTarget,
NULL,
IOCTL_HID_SET_FEATURE,
&inputDescriptor,
NULL,
NULL,
NULL);
if (!NT_SUCCESS(status)) {
KdPrint(("FireFly: WdfIoTargetSendIoctlSynchronously failed 0x%x\n", status));
goto ExitAndFree;
}
ExitAndFree:
if (preparsedData != NULL) {
ExFreePool(preparsedData);
preparsedData = NULL;
}
if (report != NULL) {
ExFreePool(report);
report = NULL;
}
if (hidTarget != NULL) {
WdfObjectDelete(hidTarget);
}
return status;
}
NTSTATUS
I2COpen(
_In_ PDEVICE_CONTEXT DeviceContext
)
/*++
Routine Description:
This routine opens a handle to the I2C controller.
Arguments:
DeviceContext - a pointer to the device context
Return Value:
NTSTATUS
--*/
{
TRACE_FUNC_ENTRY(TRACE_I2C);
PAGED_CODE();
NTSTATUS status;
WDF_IO_TARGET_OPEN_PARAMS openParams;
WDF_OBJECT_ATTRIBUTES requestAttributes;
WDF_OBJECT_ATTRIBUTES workitemAttributes;
WDF_WORKITEM_CONFIG workitemConfig;
// Create the device path using the connection ID.
DECLARE_UNICODE_STRING_SIZE(DevicePath, RESOURCE_HUB_PATH_SIZE);
RESOURCE_HUB_CREATE_PATH_FROM_ID(
&DevicePath,
DeviceContext->I2CConnectionId.LowPart,
DeviceContext->I2CConnectionId.HighPart);
TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_I2C,
"Opening handle to I2C target via %wZ", &DevicePath);
status = WdfIoTargetCreate(DeviceContext->Device, WDF_NO_OBJECT_ATTRIBUTES, &DeviceContext->I2CIoTarget);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, TRACE_I2C,
"WdfIoTargetCreate failed - %!STATUS!", status);
goto Exit;
}
// Open a handle to the I2C controller.
WDF_IO_TARGET_OPEN_PARAMS_INIT_OPEN_BY_NAME(
&openParams,
&DevicePath,
(GENERIC_READ | GENERIC_WRITE));
openParams.ShareAccess = 0;
openParams.CreateDisposition = FILE_OPEN;
openParams.FileAttributes = FILE_ATTRIBUTE_NORMAL;
status = WdfIoTargetOpen(DeviceContext->I2CIoTarget, &openParams);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, TRACE_I2C,
"Failed to open I2C I/O target - %!STATUS!", status);
goto Exit;
}
// Create a WDFMEMORY object. Do call WdfMemoryAssignBuffer before use it,
status = WdfMemoryCreatePreallocated(
WDF_NO_OBJECT_ATTRIBUTES,
static_cast<PVOID>(&status), // initial value does not matter
sizeof(status),
&DeviceContext->I2CMemory);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, TRACE_I2C,
"WdfMemoryCreatePreallocated failed with status %!STATUS!", status);
goto Exit;
}
WDF_OBJECT_ATTRIBUTES_INIT(&requestAttributes);
requestAttributes.ParentObject = DeviceContext->I2CIoTarget;
for (ULONG i = 0; i < I2CRequestSourceMax; i++)
{
status = WdfRequestCreate(&requestAttributes, DeviceContext->I2CIoTarget, &DeviceContext->OutgoingRequests[i]);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, TRACE_I2C,
"WdfRequestCreate failed with status %!STATUS!", status);
goto Exit;
}
}
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&workitemAttributes, WORKITEM_CONTEXT);
workitemAttributes.ParentObject = DeviceContext->I2CIoTarget;
WDF_WORKITEM_CONFIG_INIT(&workitemConfig, EvtWorkItemGetStatus);
status = WdfWorkItemCreate(&workitemConfig, &workitemAttributes, &DeviceContext->I2CWorkItemGetStatus);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, TRACE_I2C,
"WdfWorkItemCreate failed with status %!STATUS!", status);
goto Exit;
}
WDF_WORKITEM_CONFIG_INIT(&workitemConfig, EvtWorkItemGetControl);
status = WdfWorkItemCreate(&workitemConfig, &workitemAttributes, &DeviceContext->I2CWorkItemGetControl);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, TRACE_I2C,
"WdfWorkItemCreate failed with status %!STATUS!", status);
goto Exit;
}
Exit:
TRACE_FUNC_EXIT(TRACE_I2C);
return status;
}
NTSTATUS
t1394_EvtDeviceAdd(
/*IN*/WDFDRIVER Driver,
/*IN*/PWDFDEVICE_INIT DeviceInit
)
/*++
Routine Description:
EvtDeviceAdd is called by the framework in response to AddDevice
call from the PnP manager.
Arguments:
Driver - Handle to a framework driver object created in DriverEntry
DeviceInit - Pointer to a framework-allocated WDFDEVICE_INIT structure.
Return Value:
NTSTATUS
--*/
{
NTSTATUS status = STATUS_SUCCESS;
PDEVICE_EXTENSION deviceExtension;
PNODE_DEVICE_EXTENSION pNodeExt;
WDF_PNPPOWER_EVENT_CALLBACKS pnpPowerCallbacks;
WDF_OBJECT_ATTRIBUTES fdoAttributes,lockAttributes;
WDFDEVICE device;
WDF_DEVICE_PNP_CAPABILITIES pnpCaps;
WDF_IO_QUEUE_CONFIG ioQueueConfig;
WDF_IO_TARGET_OPEN_PARAMS openParams;
//UNREFERENCED_PARAMETER(Driver);
//ENTER("t1394_PnpAddDevice");
//
// Zero out the PnpPowerCallbacks structure.
//
WDF_PNPPOWER_EVENT_CALLBACKS_INIT(&pnpPowerCallbacks);
//
// Set Callbacks for any of the functions we are interested in.
// If no callback is set, Framework will take the default action
// by itself.
//
// These two callbacks set up and tear down hardware state,
// specifically that which only has to be done once.
//
pnpPowerCallbacks.EvtDevicePrepareHardware = t1394_EvtPrepareHardware;
pnpPowerCallbacks.EvtDeviceReleaseHardware = t1394_EvtReleaseHardware;
pnpPowerCallbacks.EvtDeviceSelfManagedIoCleanup =
t1394_EvtDeviceSelfManagedIoCleanup;
pnpPowerCallbacks.EvtDeviceD0Entry = t1394_EvtDeviceD0Entry;
pnpPowerCallbacks.EvtDeviceD0Exit = t1394_EvtDeviceD0Exit;
//
// Register the PnP and power callbacks. Power policy related callbacks
// will be registered// later in SotwareInit.
//
WdfDeviceInitSetPnpPowerEventCallbacks(DeviceInit, &pnpPowerCallbacks);
if ( !NT_SUCCESS(status)) {
//TRACE(TL_ERROR, ("WdfDeviceInitSetPnpPowerEventCallbacks failed %x\n",
// status));
return status;
}
WdfDeviceInitSetExclusive(DeviceInit, FALSE);
//
// Specify the size and type of device context.
//
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&fdoAttributes, DEVICE_EXTENSION);
status = WdfDeviceCreate(&DeviceInit, &fdoAttributes, &device);
if ( !NT_SUCCESS(status)) {
//TRACE(TL_ERROR, ("WdfDeviceInitialize failed %x\n", status));
return status;
}
deviceExtension = GetDeviceContext (device);
deviceExtension->WdfDevice = device;
//TRACE(TL_TRACE, ("PDO(0x%p) FDO(0x%p), Lower(0x%p) DevExt (0x%p)\n",
// WdfDeviceWdmGetPhysicalDevice (device),
// WdfDeviceWdmGetDeviceObject (device),
// WdfDeviceWdmGetAttachedDevice(device),
// deviceExtension));
//
// Tell the Framework that this device will need an interface so that
// application can interact with it.
//
status = WdfDeviceCreateDeviceInterface(
device,
#if defined(_1394VDEV_DRIVER_)
(LPGUID) &GUID_1394VDEV,
#else
(LPGUID) &GUID_1394DIAG,
#endif
NULL
);
if (!NT_SUCCESS (status)) {
//TRACE(TL_ERROR, ("WdfDeviceCreateDeviceInterface failed %x\n", status));
return status;
}
//
// Tell the framework to set the SurpriseRemovalOK in the DeviceCaps so
// that you don't get the popup in usermode (on Win2K) when you surprise
// remove the device.
//
WDF_DEVICE_PNP_CAPABILITIES_INIT(&pnpCaps);
pnpCaps.SurpriseRemovalOK = WdfTrue;
WdfDeviceSetPnpCapabilities(device, &pnpCaps);
// save the device object we created as our physical device object
deviceExtension->PhysicalDeviceObject =
WdfDeviceWdmGetPhysicalDevice (device);
if (deviceExtension->PhysicalDeviceObject == NULL) {
//TRACE(TL_ERROR, ("WdfDeviceWdmGetPhysicalDevice: NULL DeviceObject\n"));
return STATUS_UNSUCCESSFUL;
}
//
// This is our default IoTarget representing the deviceobject
// we are attached to.
//
deviceExtension->StackIoTarget = WdfDeviceGetIoTarget(device);
deviceExtension->StackDeviceObject = WdfDeviceWdmGetAttachedDevice(device);
if (deviceExtension->StackDeviceObject == NULL) {
//TRACE(TL_ERROR, ("WdfDeviceWdmGetAttachedDevice: NULL DeviceObject\n"));
return STATUS_UNSUCCESSFUL;
}
// Patch: this code is not in DDK 7600.16385.1 {
//
// Get the port device object from the passed in PhysicalDeviceObject
// created by the 1394 stack for us.
// Note: we can't use the top of the stack and get its device extension
// in case there is a filter driver between us and our PDO.
//
//pNodeExt = WdfDeviceWdmGetPhysicalDevice(device)->DeviceExtension;
//deviceExtension->PortDeviceObject = pNodeExt->PortDeviceObject;
// Patch: this code is not in DDK 7600.16385.1 }
//TRACE(TL_TRACE, ("PortDeviceObject = 0x%x\n",
// deviceExtension->PortDeviceObject));
//
// Create a automanaged queue for dispatching ioctl requests.
// All other requests are automatically failed by the framework.
// By creating an automanaged queue we don't have to worry about
// PNP/Power synchronization.
// A default queue gets all the requests that are not
// configure-fowarded using WdfDeviceConfigureRequestDispatching.
//
WDF_IO_QUEUE_CONFIG_INIT_DEFAULT_QUEUE(
&ioQueueConfig,
WdfIoQueueDispatchParallel
);
ioQueueConfig.EvtIoDeviceControl = t1394_EvtIoDeviceControl;
status = WdfIoQueueCreate(
deviceExtension->WdfDevice,
&ioQueueConfig,
WDF_NO_OBJECT_ATTRIBUTES,
&deviceExtension->IoctlQueue // queue handle
);
if (!NT_SUCCESS (status)) {
//TRACE(TL_ERROR, ("WdfIoQueueCreate failed 0x%x\n", status));
return status;
}
//
// Create an additional queue to hold bus reset requests.
//
WDF_IO_QUEUE_CONFIG_INIT(
&ioQueueConfig,
WdfIoQueueDispatchManual
);
status = WdfIoQueueCreate (
deviceExtension->WdfDevice,
&ioQueueConfig,
WDF_NO_OBJECT_ATTRIBUTES,
&deviceExtension->BusResetRequestsQueue
);
if(!NT_SUCCESS (status)){
//TRACE(TL_ERROR, ("Error Creating Reset Request Queue 0x%x\n",
// status));
return status;
}
//
// Create another IoTarget representing PortDeviceObject so that
// we can send async requests in rawmode directly to the port device.
//
WDF_IO_TARGET_OPEN_PARAMS_INIT_EXISTING_DEVICE(&openParams,
pNodeExt->PortDeviceObject);
status = WdfIoTargetCreate(device,
WDF_NO_OBJECT_ATTRIBUTES,
&deviceExtension->PortDeviceIoTarget);
if (!NT_SUCCESS (status)) {
//TRACE(TL_ERROR, ("WdfIoTargetCreate failed 0x%x\n", status));
return status;
}
status = WdfIoTargetOpen(deviceExtension->PortDeviceIoTarget, &openParams);
if (!NT_SUCCESS (status)) {
//TRACE(TL_ERROR, ("WdfIoTargetCreate failed 0x%x\n", status));
return status;
}
WDF_OBJECT_ATTRIBUTES_INIT(&lockAttributes);
lockAttributes.ParentObject = device;
// initialize the spinlock/list to store the bus reset irps...
status = WdfSpinLockCreate(&lockAttributes,&deviceExtension->CromSpinLock );
if(!NT_SUCCESS(status)){
//TRACE(TL_ERROR, ("WdfSpinLockCreate CromSpinLock "
// "failed 0x%x\n", status));
return status;
}
WDF_OBJECT_ATTRIBUTES_INIT(&lockAttributes);
lockAttributes.ParentObject = device;
status = WdfSpinLockCreate(&lockAttributes,
&deviceExtension->AsyncSpinLock );
if(!NT_SUCCESS(status)){
//TRACE(TL_ERROR, ("WdfSpinLockCreate AsyncSpinLock "
// "failed 0x%x\n", status));
return status;
}
WDF_OBJECT_ATTRIBUTES_INIT(&lockAttributes);
lockAttributes.ParentObject = device;
status = WdfSpinLockCreate(&lockAttributes,
&deviceExtension->IsochSpinLock );
if(!NT_SUCCESS(status)){
//TRACE(TL_ERROR, ("WdfSpinLockCreate IsochSpinLock "
// "failed 0x%x\n", status));
return status;
}
WDF_OBJECT_ATTRIBUTES_INIT(&lockAttributes);
lockAttributes.ParentObject = device;
status = WdfSpinLockCreate(&lockAttributes,
&deviceExtension->IsochResourceSpinLock );
if(!NT_SUCCESS(status)){
//TRACE(TL_ERROR, ("WdfSpinLockCreate IsochResourceSpinLock "
// "failed 0x%x\n", status));
return status;
}
InitializeListHead(&deviceExtension->CromData);
InitializeListHead(&deviceExtension->AsyncAddressData);
InitializeListHead(&deviceExtension->IsochDetachData);
InitializeListHead(&deviceExtension->IsochResourceData);
//EXIT("t1394_PnpAddDevice", status);
return(status);
} // t1394_PnpAddDevice
