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Annotation of XNU/iokit/Drivers/hidsystem/drvApplePS2Keyboard/ApplePS2Keyboard.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: 
        !            23: #ifndef _APPLEPS2KEYBOARD_H
        !            24: #define _APPLEPS2KEYBOARD_H
        !            25: 
        !            26: #include <IOKit/ps2/ApplePS2KeyboardDevice.h>
        !            27: #include <IOKit/hidsystem/IOHIKeyboard.h>
        !            28: 
        !            29: // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        !            30: // Definitions used to keep track of key state.   Key up/down state is tracked
        !            31: // in a bit list.  Bits are set for key-down, and cleared for key-up.  The bit
        !            32: // vector and macros for it's manipulation are defined here.
        !            33: //
        !            34: 
        !            35: #define KBV_NUM_KEYCODES        128
        !            36: #define KBV_BITS_PER_UNIT       32     // for UInt32
        !            37: #define KBV_BITS_MASK           31
        !            38: #define KBV_BITS_SHIFT          5      // 1<<5 == 32, for cheap divide
        !            39: #define KBV_NUNITS ((KBV_NUM_KEYCODES + \
        !            40:                                       (KBV_BITS_PER_UNIT-1))/KBV_BITS_PER_UNIT)
        !            41: 
        !            42: #define KBV_KEYDOWN(n, bits) \
        !            43:       (bits)[((n)>>KBV_BITS_SHIFT)] |= (1 << ((n) & KBV_BITS_MASK))
        !            44: 
        !            45: #define KBV_KEYUP(n, bits) \
        !            46:       (bits)[((n)>>KBV_BITS_SHIFT)] &= ~(1 << ((n) & KBV_BITS_MASK))
        !            47: 
        !            48: #define KBV_IS_KEYDOWN(n, bits) \
        !            49:       (((bits)[((n)>>KBV_BITS_SHIFT)] & (1 << ((n) & KBV_BITS_MASK))) != 0)
        !            50: 
        !            51: // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        !            52: // ApplePS2Keyboard Class Declaration
        !            53: //
        !            54: 
        !            55: class ApplePS2Keyboard : public IOHIKeyboard
        !            56: {
        !            57:   OSDeclareDefaultStructors(ApplePS2Keyboard);
        !            58: 
        !            59: private:
        !            60:   ApplePS2KeyboardDevice * _device;
        !            61:   UInt32                   _keyBitVector[KBV_NUNITS];
        !            62:   UInt8                    _extendCount;
        !            63:   UInt8                    _interruptHandlerInstalled:1;
        !            64:   UInt8                    _ledState;
        !            65: 
        !            66:   virtual bool dispatchKeyboardEventWithScancode(UInt8 scanCode);
        !            67:   virtual void setCommandByte(UInt8 setBits, UInt8 clearBits);
        !            68:   virtual void setLEDs(UInt8 ledState);
        !            69:   virtual void setKeyboardEnable(bool enable);
        !            70: 
        !            71: protected:
        !            72:   virtual const unsigned char * defaultKeymapOfLength(UInt32 * length);
        !            73:   virtual void setAlphaLockFeedback(bool locked);
        !            74:   virtual UInt32 maxKeyCodes();
        !            75: 
        !            76: public:
        !            77:   virtual bool init(OSDictionary * properties);
        !            78:   virtual ApplePS2Keyboard * probe(IOService * provider, SInt32 * score);
        !            79: 
        !            80:   virtual bool start(IOService * provider);
        !            81:   virtual void stop(IOService * provider);
        !            82: 
        !            83:   virtual void interruptOccurred(UInt8 scanCode);
        !            84: 
        !            85:   virtual UInt32 deviceType();
        !            86:   virtual UInt32 interfaceID();
        !            87: };
        !            88: 
        !            89: #endif /* _APPLEPS2KEYBOARD_H */

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