176 lines
3.3 KiB
C
176 lines
3.3 KiB
C
/*++
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Copyright (c) 1997-1998 Microsoft Corporation, All Rights Reserved
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Module Name:
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hook.c
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Abstract:
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Implements hook functions used by upper filters to directly control a PS/2
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device.
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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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#include "i8042prt.h"
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//
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// Mouse hook functions
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//
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VOID
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I8xMouseIsrWritePort(
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IN PDEVICE_OBJECT DeviceObject,
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IN UCHAR Value
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)
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/*++
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Routine Description:
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This routine runs at HIGH IRQL to write values to the mouse device
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Arguments:
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DeviceObject - The i8042prt FDO representing the mouse
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Value - Value to write to the mouse
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Return Value:
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None.
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--*/
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{
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#if DBG
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ASSERT(! ((PCOMMON_DATA) DeviceObject->DeviceExtension)->IsKeyboard);
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#else
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UNREFERENCED_PARAMETER(DeviceObject);
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#endif
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I8X_WRITE_CMD_TO_MOUSE();
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I8X_MOUSE_COMMAND( Value );
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}
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//
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// Keyboard hook functions
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//
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NTSTATUS
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I8xKeyboardSynchReadPort (
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IN PDEVICE_OBJECT DeviceObject,
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IN PUCHAR Value,
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IN BOOLEAN Dummy
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)
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/*++
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Routine Description:
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This routine runs at PASSIVE IRQL to synchronousely read a value from the
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keyboard device during the initialization of the device
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Arguments:
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DeviceObject - The i8042prt FDO representing the keyboard
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Value - Pointer in which to place the results of the read
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Return Value:
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status of the operation, STATUS_SUCCESS if successful
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--*/
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{
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#if DBG
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ASSERT(((PCOMMON_DATA) DeviceObject->DeviceExtension)->IsKeyboard);
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#else
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UNREFERENCED_PARAMETER(DeviceObject);
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#endif
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UNREFERENCED_PARAMETER(Dummy);
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return I8xGetBytePolled((CCHAR) KeyboardDeviceType,
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Value
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);
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}
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NTSTATUS
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I8xKeyboardSynchWritePort (
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IN PDEVICE_OBJECT DeviceObject,
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IN UCHAR Value,
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IN BOOLEAN WaitForACK
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)
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/*++
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Routine Description:
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This routine runs at PASSIVE IRQL to synchronousely write values to the
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keyboard device during the initialization of the device
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Arguments:
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DeviceObject - The i8042prt FDO representing the keyboard
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Value - Value to write to the keyboard
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WaitForACK - Whether we should wait the device to ACK the Value written
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Return Value:
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status of the operation, STATUS_SUCCESS if successful
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--*/
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{
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#if DBG
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ASSERT(((PCOMMON_DATA) DeviceObject->DeviceExtension)->IsKeyboard);
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#else
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UNREFERENCED_PARAMETER(DeviceObject);
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#endif
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return I8xPutBytePolled(
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DataPort,
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WaitForACK,
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(CCHAR) KeyboardDeviceType,
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Value
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);
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}
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VOID
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I8xKeyboardIsrWritePort(
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IN PDEVICE_OBJECT DeviceObject,
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IN UCHAR Value
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)
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/*++
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Routine Description:
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This routine runs at HIGH IRQL to write values to the keyboard device
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Arguments:
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DeviceObject - The i8042prt FDO representing the keyboard
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Value - Value to write to the keyboard
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Return Value:
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None.
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--*/
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{
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#if DBG
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ASSERT(((PCOMMON_DATA) DeviceObject->DeviceExtension)->IsKeyboard);
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#else
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UNREFERENCED_PARAMETER(DeviceObject);
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#endif
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I8xPutByteAsynchronous((CCHAR) DataPort,
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Value
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);
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}
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