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  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 2000 Apple Computer, Inc.  All rights reserved.
  27  *
  28  * AppleI386CPU.cpp
  29  *
  30  * March 6, 2000 jliu
  31  *    Created based on AppleCPU.
  32  */
  33
  34 #include "AppleI386CPU.h"
  35
  36 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  37
  38 #undef super
  39 #define super IOCPU
  40
  41 OSDefineMetaClassAndStructors(AppleI386CPU, IOCPU);
  42
  43 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  44
  45 bool AppleI386CPU::start(IOService * provider)
  46 {
  47 //  kern_return_t result;
  48
  49     if (!super::start(provider)) return false;
  50
  51     cpuIC = new AppleI386CPUInterruptController;
  52     if (cpuIC == 0) return false;
  53
  54     if (cpuIC->initCPUInterruptController(1) != kIOReturnSuccess)
  55         return false;
  56
  57     cpuIC->attach(this);
  58
  59     cpuIC->registerCPUInterruptController();
  60
  61 #ifdef NOTYET
  62     // Register this CPU with mach.
  63     result = ml_processor_register((cpu_id_t)this, 0,
  64                     &machProcessor, &ipi_handler, true);
  65     if (result == KERN_FAILURE) return false;
  66 #endif
  67
  68     setCPUState(kIOCPUStateUninitalized);
  69
  70 #ifdef NOTYET
  71     processor_start(machProcessor);
  72 #endif
  73
  74     // Hack. Call initCPU() ourself since no one else will.
  75     initCPU(true);
  76
  77     registerService();
  78
  79     return true;
  80 }
  81
  82 void AppleI386CPU::initCPU(bool /*boot*/)
  83 {
  84     cpuIC->enableCPUInterrupt(this);
  85
  86     setCPUState(kIOCPUStateRunning);
  87 }
  88
  89 void AppleI386CPU::quiesceCPU(void)
  90 {
  91 }
  92
  93 kern_return_t AppleI386CPU::startCPU(vm_offset_t /*start_paddr*/,
  94                                      vm_offset_t /*arg_paddr*/)
  95 {
  96   return KERN_FAILURE;
  97 }
  98
  99 void AppleI386CPU::haltCPU(void)
 100 {
 101 }
 102
 103 const OSSymbol * AppleI386CPU::getCPUName(void)
 104 {
 105     return OSSymbol::withCStringNoCopy("Primary0");
 106 }
 107
 108 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 109
 110 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 111
 112 #undef super
 113 #define super IOCPUInterruptController
 114
 115 OSDefineMetaClassAndStructors(AppleI386CPUInterruptController,
 116                               IOCPUInterruptController);
 117
 118 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 119
 120 IOReturn AppleI386CPUInterruptController::handleInterrupt(void * /*refCon*/,
 121                                                           IOService * /*nub*/,
 122                                                           int source)
 123 {
 124     IOInterruptVector * vector;
 125
 126     // Override the implementation in IOCPUInterruptController to
 127     // dispatch interrupts the old way.
 128     //
 129     // source argument is ignored, use the first IOCPUInterruptController
 130     // in the vector array.
 131     //
 132     vector = &vectors[0];
 133
 134     if (!vector->interruptRegistered)
 135         return kIOReturnInvalid;
 136
 137     vector->handler(vector->target,
 138                     vector->refCon,
 139                     vector->nub,
 140                     source);
 141
 142     return kIOReturnSuccess;
 143 }