iokit/Drivers/platform/drvApplePowerExpressPE/PowerExpress.cpp

   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) 1999 Apple Computer, Inc.  All rights reserved.
  24  *
  25  *  DRI: Josh de Cesare
  26  *
  27  */
  28
  29 #include <IOKit/IODeviceTreeSupport.h>
  30
  31 #include "PowerExpress.h"
  32
  33 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  34
  35 #define super ApplePlatformExpert
  36
  37 OSDefineMetaClassAndStructors(PowerExpressPE, ApplePlatformExpert);
  38
  39 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  40
  41 bool PowerExpressPE::start(IOService *provider)
  42 {
  43   OSData *tmpData;
  44
  45   setChipSetType(kChipSetTypePowerExpress);
  46
  47   tmpData = OSDynamicCast(OSData, getProperty("senses"));
  48   if (tmpData) senseArray = (long *)tmpData->getBytesNoCopy();
  49
  50   return super::start(provider);
  51 }
  52
  53 bool PowerExpressPE::platformAdjustService(IOService *service)
  54 {
  55   long     cnt, numInterrupts, sourceNumbers[2];
  56   OSData   *tmpData;
  57   OSArray  *controllers, *specifiers;
  58   OSSymbol *controller;
  59
  60   // Fix up the interrupt data.
  61   controllers = OSDynamicCast(OSArray, service->getProperty(gIOInterruptControllersKey));
  62   specifiers = OSDynamicCast(OSArray, service->getProperty(gIOInterruptSpecifiersKey));
  63   if (controllers && specifiers) {
  64     numInterrupts = specifiers->getCount();
  65     for (cnt = 0; cnt < numInterrupts; cnt++) {
  66       // Only change interrupts for MPIC.
  67       controller = OSDynamicCast(OSSymbol, controllers->getObject(cnt));
  68       if (controller == gIODTDefaultInterruptController) {
  69         tmpData = OSDynamicCast(OSData, specifiers->getObject(cnt));
  70         if (tmpData && (tmpData->getLength() == 4)) {
  71           sourceNumbers[0] = *(long *)tmpData->getBytesNoCopy();
  72           sourceNumbers[1] = senseArray[sourceNumbers[0]];
  73           tmpData = OSData::withBytes(sourceNumbers, 2 * sizeof(long));
  74           if (tmpData) {
  75             specifiers->setObject(cnt, tmpData);
  76             tmpData->release();
  77           }
  78         }
  79       }
  80     }
  81   }
  82
  83   if (IODTMatchNubWithKeys(service, "open-pic")) {
  84     service->setProperty("InterruptControllerName",
  85                          gIODTDefaultInterruptController);
  86     return true;
  87   }
  88
  89   return true;
  90 }