interrupts.hh revision 5648
1/* 2 * Copyright (c) 2007 The Hewlett-Packard Development Company 3 * All rights reserved. 4 * 5 * Redistribution and use of this software in source and binary forms, 6 * with or without modification, are permitted provided that the 7 * following conditions are met: 8 * 9 * The software must be used only for Non-Commercial Use which means any 10 * use which is NOT directed to receiving any direct monetary 11 * compensation for, or commercial advantage from such use. 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Derivatives of the software may be shared with 37 * others provided: (i) the others agree to abide by the list of 38 * conditions herein which includes the Non-Commercial Use restrictions; 39 * and (ii) such Derivatives of the software include the above copyright 40 * notice to acknowledge the contribution from this software where 41 * applicable, this list of conditions and the disclaimer below. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 * 55 * Authors: Gabe Black 56 */ 57 58#ifndef __ARCH_X86_INTERRUPTS_HH__ 59#define __ARCH_X86_INTERRUPTS_HH__ 60 61#include "arch/x86/apicregs.hh" 62#include "arch/x86/faults.hh" 63#include "cpu/thread_context.hh" 64#include "dev/io_device.hh" 65#include "params/X86LocalApic.hh" 66#include "sim/eventq.hh" 67#include "sim/sim_object.hh" 68 69class ThreadContext; 70 71namespace X86ISA 72{ 73 74class Interrupts : public BasicPioDevice 75{ 76 protected: 77 uint32_t regs[NUM_APIC_REGS]; 78 Tick latency; 79 Tick clock; 80 81 class ApicTimerEvent : public Event 82 { 83 public: 84 ApicTimerEvent() : Event() 85 {} 86 87 void process() 88 { 89 warn("Local APIC timer event doesn't do anything!\n"); 90 } 91 }; 92 93 ApicTimerEvent apicTimerEvent; 94 95 public: 96 typedef X86LocalApicParams Params; 97 98 void setClock(Tick newClock) 99 { 100 clock = newClock; 101 } 102 103 const Params * 104 params() const 105 { 106 return dynamic_cast<const Params *>(_params); 107 } 108 109 Tick read(PacketPtr pkt); 110 Tick write(PacketPtr pkt); 111 112 void addressRanges(AddrRangeList &range_list) 113 { 114 range_list.clear(); 115 range_list.push_back(RangeEx(x86LocalAPICAddress(0, 0), 116 x86LocalAPICAddress(0, 0) + PageBytes)); 117 } 118 119 uint32_t readReg(ApicRegIndex miscReg); 120 void setReg(ApicRegIndex reg, uint32_t val); 121 void setRegNoEffect(ApicRegIndex reg, uint32_t val) 122 { 123 regs[reg] = val; 124 } 125 126 Interrupts(Params * p) : BasicPioDevice(p), 127 latency(p->pio_latency), clock(0) 128 { 129 pioSize = PageBytes; 130 //Set the local apic DFR to the flat model. 131 regs[APIC_DESTINATION_FORMAT] = (uint32_t)(-1); 132 memset(regs, 0, sizeof(regs)); 133 clear_all(); 134 } 135 136 int InterruptLevel(uint64_t softint) 137 { 138 panic("Interrupts::InterruptLevel unimplemented!\n"); 139 return 0; 140 } 141 142 void post(int int_num, int index) 143 { 144 panic("Interrupts::post unimplemented!\n"); 145 } 146 147 void clear(int int_num, int index) 148 { 149 warn("Interrupts::clear unimplemented!\n"); 150 } 151 152 void clear_all() 153 { 154 warn("Interrupts::clear_all unimplemented!\n"); 155 } 156 157 bool check_interrupts(ThreadContext * tc) const 158 { 159 return false; 160 } 161 162 Fault getInterrupt(ThreadContext * tc) 163 { 164 return NoFault; 165 } 166 167 void updateIntrInfo(ThreadContext * tc) 168 { 169 panic("Interrupts::updateIntrInfo unimplemented!\n"); 170 } 171 172 void serialize(std::ostream & os) 173 { 174 panic("Interrupts::serialize unimplemented!\n"); 175 } 176 177 void unserialize(Checkpoint * cp, const std::string & section) 178 { 179 panic("Interrupts::unserialize unimplemented!\n"); 180 } 181}; 182 183}; 184 185#endif // __ARCH_X86_INTERRUPTS_HH__ 186