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Annotation of XNU/iokit/Drivers/hidsystem/drvApplePS2Keyboard/ApplePS2Keyboard.h, revision 1.1.1.1

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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