141 lines
2.5 KiB
C
141 lines
2.5 KiB
C
/*++
|
|
|
|
Copyright (c) 1990, 1991, 1992, 1993 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
kbdclass.h
|
|
|
|
Abstract:
|
|
|
|
These are the structures and defines that are used in the
|
|
keyboard class driver.
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#ifndef _KBDCLASS_
|
|
#define _KBDCLASS_
|
|
|
|
#include <ntddkbd.h>
|
|
|
|
//
|
|
// Define the default number of elements in the class input data queue.
|
|
//
|
|
|
|
#define DATA_QUEUE_SIZE 100
|
|
|
|
//
|
|
// Class device extension.
|
|
//
|
|
|
|
typedef struct _DEVICE_EXTENSION {
|
|
|
|
//
|
|
// Flag that indicates whether there is currently a request held pending
|
|
// by StartIo.
|
|
//
|
|
|
|
BOOLEAN RequestIsPending;
|
|
|
|
//
|
|
// Flag that indicates whether the cleanup routine has been initiated.
|
|
//
|
|
|
|
BOOLEAN CleanupWasInitiated;
|
|
|
|
//
|
|
// Flag that indicates whether or not a trusted subsystem currently
|
|
// has a handle open.
|
|
//
|
|
|
|
BOOLEAN TrustedSubsystemConnected;
|
|
|
|
//
|
|
// Number of input data items currently in the InputData queue.
|
|
//
|
|
|
|
ULONG InputCount;
|
|
|
|
//
|
|
// Start of the class input data queue (really a circular buffer).
|
|
//
|
|
|
|
PKEYBOARD_INPUT_DATA InputData;
|
|
|
|
//
|
|
// Insertion pointer for InputData.
|
|
//
|
|
|
|
PKEYBOARD_INPUT_DATA DataIn;
|
|
|
|
//
|
|
// Removal pointer for InputData.
|
|
//
|
|
|
|
PKEYBOARD_INPUT_DATA DataOut;
|
|
|
|
//
|
|
// Keyboard attributes.
|
|
//
|
|
|
|
KEYBOARD_ATTRIBUTES KeyboardAttributes;
|
|
|
|
//
|
|
// Spinlock used to synchronize access to the input data queue and its
|
|
// insertion/removal pointers.
|
|
//
|
|
|
|
KSPIN_LOCK SpinLock;
|
|
|
|
//
|
|
// Number of port drivers serviced by this class driver.
|
|
//
|
|
|
|
ULONG MaximumPortsServiced;
|
|
|
|
//
|
|
// Specifies the type of class-port connection to make. A '1'
|
|
// indicates a 1:1 relationship between class device objects and
|
|
// port device objects. A '0' indicates a 1:many relationship.
|
|
//
|
|
|
|
ULONG ConnectOneClassToOnePort;
|
|
|
|
//
|
|
// Pointer to the list of pointers to port device objects.
|
|
//
|
|
|
|
PDEVICE_OBJECT *PortDeviceObjectList;
|
|
|
|
//
|
|
// Request sequence number (used for error logging).
|
|
//
|
|
|
|
ULONG SequenceNumber;
|
|
|
|
//
|
|
// Indicates whether it is okay to log overflow errors.
|
|
//
|
|
|
|
BOOLEAN OkayToLogOverflow;
|
|
|
|
} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
|
|
|
|
//
|
|
// Keyboard configuration information.
|
|
//
|
|
|
|
typedef struct _KEYBOARD_CONFIGURATION_INFORMATION {
|
|
|
|
//
|
|
// Maximum size of class input data queue, in bytes.
|
|
//
|
|
|
|
ULONG DataQueueSize;
|
|
|
|
} KEYBOARD_CONFIGURATION_INFORMATION, *PKEYBOARD_CONFIGURATION_INFORMATION;
|
|
|
|
#endif // _KBDCLASS_
|