Sample Code

Windows Driver Samples/ Toaster Sample Driver/ C++/ kmdf/ toastmon/ toastmon.H/

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/*++
 
Copyright (c) 1990-2000 Microsoft Corporation, All Rights Reserved
 
Module Name:
 
    toastmon.h
 
Abstract:
 
Environment:
 
    Kernel mode
 
--*/
 
#if     !defined(__TOASTMON_H__)
#define __TOASTMON_H__
 
#include <ntddk.h> //wdm.h>
#include <wdf.h>    // Driver Framework.
 
#define DRIVER_TAG              'NOMT'
#define READ_BUF_SIZE           100
#define WRITE_BUF_SIZE          120
 
typedef struct _DEVICE_EXTENSION {
    WDFDEVICE           WdfDevice;
    WDFIOTARGET         ToasterTarget;
    PVOID               NotificationHandle; // Interface notification handle
    WDFCOLLECTION       TargetDeviceCollection;
    WDFWAITLOCK         TargetDeviceCollectionLock;
    PVOID               WMIDeviceArrivalNotificationObject;
} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
 
WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(DEVICE_EXTENSION, GetDeviceExtension)
 
 
typedef struct  _TARGET_DEVICE_INFO {
    PDEVICE_EXTENSION DeviceExtension; // Our FDO device extension
    LIST_ENTRY        ListEntry; // Entry to chain to the listhead
    WDFREQUEST        ReadRequest;
    WDFREQUEST        WriteRequest;
    WDFTIMER          TimerForPostingRequests;
 
    //      
    // Set to TRUE while the target is opened. Will be set to FALSE at query remove (for a graceful remove)
    // or removal complete (surprise removal of the target). Can be set back to TRUE if the graceful remove
    // fails and the query remove is canceled.
    //
    // Guarded by DeviceExtension->TargetDeviceCollectionLock
    //
    BOOLEAN           Opened;
} TARGET_DEVICE_INFO, *PTARGET_DEVICE_INFO;
 
WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(TARGET_DEVICE_INFO, GetTargetDeviceInfo)
 
typedef struct _TIMER_CONTEXT {
 
   WDFIOTARGET IoTarget;
 
} TIMER_CONTEXT, *PTIMER_CONTEXT ;
 
WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(TIMER_CONTEXT, GetTimerContext)
 
#if DBG
#define DebugPrint(_x_) \
               DbgPrint ("ToastMon:"); \
               DbgPrint _x_;
 
#define TRAP() DbgBreakPoint()
 
#else
#define DebugPrint(_x_)
#define TRAP()
#endif
 
 
/********************* function prototypes ***********************************/
//
DRIVER_INITIALIZE DriverEntry;
 
EVT_WDF_DRIVER_DEVICE_ADD ToastMon_EvtDeviceAdd;
 
EVT_WDF_DEVICE_CONTEXT_CLEANUP ToastMon_EvtDeviceContextCleanup;
 
EVT_WDF_IO_TARGET_QUERY_REMOVE ToastMon_EvtIoTargetQueryRemove;
EVT_WDF_IO_TARGET_REMOVE_CANCELED ToastMon_EvtIoTargetRemoveCanceled;
EVT_WDF_IO_TARGET_REMOVE_COMPLETE ToastMon_EvtIoTargetRemoveComplete;
 
EVT_WDF_TIMER Toastmon_EvtTimerPostRequests;
 
EVT_WDF_REQUEST_COMPLETION_ROUTINE Toastmon_ReadRequestCompletionRoutine;
EVT_WDF_REQUEST_COMPLETION_ROUTINE Toastmon_WriteRequestCompletionRoutine;
 
DRIVER_NOTIFICATION_CALLBACK_ROUTINE ToastMon_PnpNotifyInterfaceChange;
 
NTSTATUS
Toastmon_OpenDevice(
    WDFDEVICE Device,
    PUNICODE_STRING SymbolicLink,
    WDFIOTARGET *Target
    );
 
NTSTATUS
ToastMon_PostReadRequests(
    IN WDFIOTARGET IoTarget
    );
 
NTSTATUS
ToastMon_PostWriteRequests(
    IN WDFIOTARGET IoTarget
    );
 
NTSTATUS
RegisterForWMINotification(
    PDEVICE_EXTENSION DeviceExt
    );
 
VOID
UnregisterForWMINotification(
    PDEVICE_EXTENSION DeviceExt
    );
 
FWMI_NOTIFICATION_CALLBACK WmiNotificationCallback;
 
#endif

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