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200 lines
3.9 KiB
200 lines
3.9 KiB
/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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kbfilter.h
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Abstract:
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This module contains the common private declarations for the keyboard
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packet filter
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Environment:
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kernel mode only
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Notes:
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Revision History:
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--*/
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#ifndef KBFILTER_H
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#define KBFILTER_H
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#include "ntddk.h"
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#include "kbdmou.h"
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#include <ntddkbd.h>
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#include <ntdd8042.h>
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#define KBFILTER_POOL_TAG (ULONG) 'tlfK'
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#undef ExAllocatePool
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#define ExAllocatePool(type, size) \
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ExAllocatePoolWithTag (type, size, KBFILTER_POOL_TAG)
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#if DBG
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#define TRAP() DbgBreakPoint()
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#define DbgRaiseIrql(_x_,_y_) KeRaiseIrql(_x_,_y_)
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#define DbgLowerIrql(_x_) KeLowerIrql(_x_)
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#define DebugPrint(_x_) DbgPrint _x_
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#else // DBG
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#define TRAP()
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#define DbgRaiseIrql(_x_,_y_)
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#define DbgLowerIrql(_x_)
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#define DebugPrint(_x_)
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#endif
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#define MIN(_A_,_B_) (((_A_) < (_B_)) ? (_A_) : (_B_))
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typedef struct _DEVICE_EXTENSION
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{
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//
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// A backpointer to the device object for which this is the extension
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//
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PDEVICE_OBJECT Self;
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//
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// "THE PDO" (ejected by the root bus or ACPI)
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//
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PDEVICE_OBJECT PDO;
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//
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// The top of the stack before this filter was added. AKA the location
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// to which all IRPS should be directed.
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//
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PDEVICE_OBJECT TopOfStack;
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//
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// Number of creates sent down
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//
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LONG EnableCount;
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//
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// The real connect data that this driver reports to
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//
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CONNECT_DATA UpperConnectData;
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//
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// Previous initialization and hook routines (and context)
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//
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PVOID UpperContext;
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PI8042_KEYBOARD_INITIALIZATION_ROUTINE UpperInitializationRoutine;
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PI8042_KEYBOARD_ISR UpperIsrHook;
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//
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// Write function from within KbFilter_IsrHook
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//
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IN PI8042_ISR_WRITE_PORT IsrWritePort;
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//
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// Queue the current packet (ie the one passed into KbFilter_IsrHook)
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//
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IN PI8042_QUEUE_PACKET QueueKeyboardPacket;
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//
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// Context for IsrWritePort, QueueKeyboardPacket
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//
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IN PVOID CallContext;
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//
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// current power state of the device
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//
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DEVICE_POWER_STATE DeviceState;
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BOOLEAN Started;
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BOOLEAN SurpriseRemoved;
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BOOLEAN Removed;
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} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
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//
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// Prototypes
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//
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NTSTATUS
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KbFilter_AddDevice(
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT BusDeviceObject
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);
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NTSTATUS
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KbFilter_CreateClose (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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KbFilter_DispatchPassThrough(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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KbFilter_InternIoCtl (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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KbFilter_IoCtl (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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KbFilter_PnP (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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KbFilter_Power (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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KbFilter_InitializationRoutine(
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IN PDEVICE_OBJECT DeviceObject, // InitializationContext
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IN PVOID SynchFuncContext,
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IN PI8042_SYNCH_READ_PORT ReadPort,
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IN PI8042_SYNCH_WRITE_PORT WritePort,
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OUT PBOOLEAN TurnTranslationOn
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);
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BOOLEAN
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KbFilter_IsrHook(
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PDEVICE_OBJECT DeviceObject, // IsrContext
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PKEYBOARD_INPUT_DATA CurrentInput,
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POUTPUT_PACKET CurrentOutput,
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UCHAR StatusByte,
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PUCHAR DataByte,
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PBOOLEAN ContinueProcessing,
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PKEYBOARD_SCAN_STATE ScanState
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);
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VOID
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KbFilter_ServiceCallback(
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IN PDEVICE_OBJECT DeviceObject,
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IN PKEYBOARD_INPUT_DATA InputDataStart,
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IN PKEYBOARD_INPUT_DATA InputDataEnd,
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IN OUT PULONG InputDataConsumed
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);
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VOID
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KbFilter_Unload (
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IN PDRIVER_OBJECT DriverObject
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);
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#endif // KBFILTER_H
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