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Annotation of XNU/iokit/Drivers/platform/drvAppleNMI/AppleNMI.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:  * Copyright (c) 1998-9 Apple Computer, Inc.  All rights reserved.
                     24:  *
                     25:  *  DRI: Josh de Cesare
                     26:  *
                     27:  */
                     28: 
                     29: #include <IOKit/IOTypes.h>
                     30: #include <IOKit/IOLib.h>
                     31: 
                     32: extern "C" {
                     33: #include <pexpert/pexpert.h>
                     34: }
                     35: 
                     36: #include "AppleNMI.h"
                     37: 
                     38: 
                     39: /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
                     40: 
                     41: #define super IOService
                     42: 
                     43: OSDefineMetaClassAndStructors(AppleNMI, IOService);
                     44: 
                     45: /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
                     46: 
                     47: bool AppleNMI::start(IOService *provider)
                     48: {
                     49:   if (!super::init()) return false;
                     50:   
                     51:   // Register the interrupt.
                     52:     provider->registerInterrupt(0, this,
                     53:                             (IOInterruptAction) &AppleNMI::handleInterrupt, 0);
                     54:   provider->enableInterrupt(0);
                     55:   
                     56:   return true;
                     57: }
                     58: 
                     59: IOReturn AppleNMI::initNMI(IOInterruptController *parentController,
                     60:                           OSData *parentSource)
                     61: {
                     62:   // Allocate the IOInterruptSource so this can act like a nub.
                     63:   _interruptSources = (IOInterruptSource *)IOMalloc(sizeof(IOInterruptSource));
                     64:   if (_interruptSources == 0) return kIOReturnNoMemory;
                     65:   _numInterruptSources = 1;
                     66:   
                     67:   // Set up the IOInterruptSource to point at this.
                     68:   _interruptSources[0].interruptController = parentController;
                     69:   _interruptSources[0].vectorData = parentSource;
                     70:   
                     71:   // call start using itself as its provider.
                     72:   if (!start(this)) return kIOReturnError;
                     73:   
                     74:   return kIOReturnSuccess;
                     75: }
                     76: 
                     77: IOReturn AppleNMI::handleInterrupt(void * /*refCon*/, IOService * /*nub*/,
                     78:                                   int /*source*/)
                     79: {
                     80:   PE_enter_debugger("NMI");
                     81:   
                     82:   return kIOReturnSuccess;
                     83: }

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