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Annotation of XNU/iokit/Drivers/platform/drvAppleIntelClock/IntelClock.cpp, 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: // Backdoor hack for Intel Clock.
                     24: //
                     25: //
                     26: 
                     27: #include "AppleIntelClock.h"
                     28: 
                     29: #define super IOService
                     30: OSDefineMetaClassAndStructors(AppleIntelClock, IOService);
                     31: 
                     32: extern "C" {
                     33: extern void    hardclock(void);
                     34: };
                     35: 
                     36: bool
                     37: AppleIntelClock::start(IOService *provider)
                     38: {
                     39:        if (!super::start(provider))
                     40:                return false;
                     41: 
                     42:        provider->registerInterrupt(kIRQ_Clock, 0, (IOInterruptAction) hardclock);
                     43:        provider->enableInterrupt(kIRQ_Clock);
                     44: 
                     45:        publishResource("IORTC", this);
                     46:        return true;
                     47: }

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