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Annotation of ntddk/src/input/mouclass/mouclass.h, revision 1.1

1.1     ! root        1: /*++
        !             2: 
        !             3: Copyright (c) 1989, 1990, 1991, 1992, 1993  Microsoft Corporation
        !             4: 
        !             5: Module Name:
        !             6: 
        !             7:     mouclass.h
        !             8: 
        !             9: Abstract:
        !            10: 
        !            11:     These are the structures and defines that are used in the
        !            12:     mouse class driver.
        !            13: 
        !            14: Revision History:
        !            15: 
        !            16: --*/
        !            17: 
        !            18: #ifndef _MOUCLASS_
        !            19: #define _MOUCLASS_
        !            20: 
        !            21: #include <ntddmou.h>
        !            22: 
        !            23: //
        !            24: // Define the default number of elements in the class input data queue.
        !            25: //
        !            26: 
        !            27: #define DATA_QUEUE_SIZE 100
        !            28: 
        !            29: //
        !            30: // Class device extension.
        !            31: //
        !            32: 
        !            33: typedef struct _DEVICE_EXTENSION {
        !            34: 
        !            35:     //
        !            36:     // Flag that indicates whether there is currently a request held pending
        !            37:     // by StartIo.
        !            38:     //
        !            39: 
        !            40:     BOOLEAN RequestIsPending;
        !            41: 
        !            42:     //
        !            43:     // Flag that indicates whether the cleanup routine has been initiated.
        !            44:     //
        !            45: 
        !            46:     BOOLEAN CleanupWasInitiated;
        !            47: 
        !            48:     //
        !            49:     // Number of input data items currently in the InputData queue.
        !            50:     //
        !            51: 
        !            52:     ULONG InputCount;
        !            53: 
        !            54:     //
        !            55:     // Start of the class input data queue (really a circular buffer).
        !            56:     //
        !            57: 
        !            58:     PMOUSE_INPUT_DATA InputData;
        !            59: 
        !            60:     //
        !            61:     // Insertion pointer for InputData.
        !            62:     //
        !            63: 
        !            64:     PMOUSE_INPUT_DATA DataIn;
        !            65: 
        !            66:     //
        !            67:     // Removal pointer for InputData.
        !            68:     //
        !            69: 
        !            70:     PMOUSE_INPUT_DATA DataOut;
        !            71: 
        !            72:     //
        !            73:     // Mouse attributes.
        !            74:     //
        !            75: 
        !            76:     MOUSE_ATTRIBUTES  MouseAttributes;
        !            77: 
        !            78:     //
        !            79:     // Spinlock used to synchronize access to the input data queue and its
        !            80:     // insertion/removal pointers.
        !            81:     //
        !            82: 
        !            83:     KSPIN_LOCK SpinLock;
        !            84: 
        !            85:     //
        !            86:     // Number of port drivers serviced by this class driver.
        !            87:     //
        !            88: 
        !            89:     ULONG MaximumPortsServiced;
        !            90: 
        !            91:     //
        !            92:     // Specifies the type of class-port connection to make.  A '1'
        !            93:     // indicates a 1:1 relationship between class device objects and
        !            94:     // port device objects.  A '0' indicates a 1:many relationship.
        !            95:     //
        !            96: 
        !            97:     ULONG ConnectOneClassToOnePort;
        !            98: 
        !            99:     //
        !           100:     // Pointer to the list of pointers to port device objects.
        !           101:     //
        !           102: 
        !           103:     PDEVICE_OBJECT *PortDeviceObjectList;
        !           104: 
        !           105:     //
        !           106:     // Request sequence number (used for error logging).
        !           107:     //
        !           108:     
        !           109:     ULONG SequenceNumber;
        !           110: 
        !           111:     //
        !           112:     // Indicates whether it is okay to log overflow errors.
        !           113:     //
        !           114: 
        !           115:     BOOLEAN OkayToLogOverflow;
        !           116: 
        !           117: } DEVICE_EXTENSION, *PDEVICE_EXTENSION;
        !           118: 
        !           119: //
        !           120: // Mouse configuration information.  
        !           121: //
        !           122: 
        !           123: typedef struct _MOUSE_CONFIGURATION_INFORMATION {
        !           124: 
        !           125:     //
        !           126:     // Maximum size of class input data queue, in bytes.
        !           127:     //
        !           128: 
        !           129:     ULONG  DataQueueSize;
        !           130: 
        !           131: } MOUSE_CONFIGURATION_INFORMATION, *PMOUSE_CONFIGURATION_INFORMATION;
        !           132: 
        !           133: #endif // _MOUCLASS_

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