iokit/Drivers/platform/drvAppleI386Generic/AppleI386CPU.cpp

   1 /*
   2  * Copyright (c) 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) 2000 Apple Computer, Inc.  All rights reserved.
  24  *
  25  * AppleI386CPU.cpp
  26  *
  27  * March 6, 2000 jliu
  28  *    Created based on AppleCPU.
  29  */
  30
  31 #include "AppleI386CPU.h"
  32
  33 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  34
  35 #undef super
  36 #define super IOCPU
  37
  38 OSDefineMetaClassAndStructors(AppleI386CPU, IOCPU);
  39
  40 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  41
  42 bool AppleI386CPU::start(IOService * provider)
  43 {
  44 //  kern_return_t result;
  45
  46     if (!super::start(provider)) return false;
  47
  48     cpuIC = new AppleI386CPUInterruptController;
  49     if (cpuIC == 0) return false;
  50
  51     if (cpuIC->initCPUInterruptController(1) != kIOReturnSuccess)
  52         return false;
  53
  54     cpuIC->attach(this);
  55
  56     cpuIC->registerCPUInterruptController();
  57
  58 #ifdef NOTYET
  59     // Register this CPU with mach.
  60     result = ml_processor_register((cpu_id_t)this, 0,
  61                     &machProcessor, &ipi_handler, true);
  62     if (result == KERN_FAILURE) return false;
  63 #endif
  64
  65     setCPUState(kIOCPUStateUninitalized);
  66
  67 #ifdef NOTYET
  68     processor_start(machProcessor);
  69 #endif
  70
  71     // Hack. Call initCPU() ourself since no one else will.
  72     initCPU(true);
  73
  74     registerService();
  75
  76     return true;
  77 }
  78
  79 void AppleI386CPU::initCPU(bool /*boot*/)
  80 {
  81     cpuIC->enableCPUInterrupt(this);
  82
  83     setCPUState(kIOCPUStateRunning);
  84 }
  85
  86 void AppleI386CPU::quiesceCPU(void)
  87 {
  88 }
  89
  90 kern_return_t AppleI386CPU::startCPU(vm_offset_t /*start_paddr*/,
  91                                      vm_offset_t /*arg_paddr*/)
  92 {
  93   return KERN_FAILURE;
  94 }
  95
  96 void AppleI386CPU::haltCPU(void)
  97 {
  98 }
  99
 100 const OSSymbol * AppleI386CPU::getCPUName(void)
 101 {
 102     return OSSymbol::withCStringNoCopy("Primary0");
 103 }
 104
 105 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 106
 107 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 108
 109 #undef super
 110 #define super IOCPUInterruptController
 111
 112 OSDefineMetaClassAndStructors(AppleI386CPUInterruptController,
 113                               IOCPUInterruptController);
 114
 115 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 116
 117 IOReturn AppleI386CPUInterruptController::handleInterrupt(void * /*refCon*/,
 118                                                           IOService * /*nub*/,
 119                                                           int source)
 120 {
 121     IOInterruptVector * vector;
 122
 123     // Override the implementation in IOCPUInterruptController to
 124     // dispatch interrupts the old way.
 125     //
 126     // source argument is ignored, use the first IOCPUInterruptController
 127     // in the vector array.
 128     //
 129     vector = &vectors[0];
 130
 131     if (!vector->interruptRegistered)
 132         return kIOReturnInvalid;
 133
 134     vector->handler(vector->target,
 135                     vector->refCon,
 136                     vector->nub,
 137                     source);
 138
 139     return kIOReturnSuccess;
 140 }