intdev.hh revision 7811:a8fc35183c10
1/* 2 * Copyright (c) 2008 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Gabe Black 29 */ 30 31#ifndef __DEV_X86_INTDEV_HH__ 32#define __DEV_X86_INTDEV_HH__ 33 34#include <cassert> 35#include <string> 36 37#include "arch/x86/x86_traits.hh" 38#include "arch/x86/intmessage.hh" 39#include "mem/mem_object.hh" 40#include "mem/mport.hh" 41#include "sim/sim_object.hh" 42#include "params/X86IntSourcePin.hh" 43#include "params/X86IntSinkPin.hh" 44#include "params/X86IntLine.hh" 45 46#include <list> 47 48namespace X86ISA { 49 50typedef std::list<int> ApicList; 51 52class IntDev 53{ 54 protected: 55 class IntPort : public MessagePort 56 { 57 IntDev * device; 58 Tick latency; 59 Addr intAddr; 60 public: 61 IntPort(const std::string &_name, MemObject * _parent, 62 IntDev *dev, Tick _latency) : 63 MessagePort(_name, _parent), device(dev), latency(_latency) 64 { 65 } 66 67 void getDeviceAddressRanges(AddrRangeList &resp, bool &snoop) 68 { 69 snoop = false; 70 device->getIntAddrRange(resp); 71 } 72 73 Tick recvMessage(PacketPtr pkt) 74 { 75 return device->recvMessage(pkt); 76 } 77 78 Tick recvResponse(PacketPtr pkt) 79 { 80 return device->recvResponse(pkt); 81 } 82 83 // This is x86 focused, so if this class becomes generic, this would 84 // need to be moved into a subclass. 85 void sendMessage(ApicList apics, 86 TriggerIntMessage message, bool timing); 87 88 void recvStatusChange(Status status) 89 { 90 if (status == RangeChange) { 91 sendStatusChange(Port::RangeChange); 92 } 93 } 94 95 }; 96 97 IntPort * intPort; 98 99 public: 100 IntDev(MemObject * parent, Tick latency = 0) 101 { 102 if (parent != NULL) { 103 intPort = new IntPort(parent->name() + ".int_port", 104 parent, this, latency); 105 } else { 106 intPort = NULL; 107 } 108 } 109 110 virtual ~IntDev() 111 {} 112 113 virtual void 114 signalInterrupt(int line) 115 { 116 panic("signalInterrupt not implemented.\n"); 117 } 118 119 virtual void 120 raiseInterruptPin(int number) 121 { 122 panic("raiseInterruptPin not implemented.\n"); 123 } 124 125 virtual void 126 lowerInterruptPin(int number) 127 { 128 panic("lowerInterruptPin not implemented.\n"); 129 } 130 131 virtual Tick 132 recvMessage(PacketPtr pkt) 133 { 134 panic("recvMessage not implemented.\n"); 135 return 0; 136 } 137 138 virtual Tick 139 recvResponse(PacketPtr pkt) 140 { 141 delete pkt->req; 142 delete pkt; 143 return 0; 144 } 145 146 virtual void 147 getIntAddrRange(AddrRangeList &range_list) 148 { 149 panic("intAddrRange not implemented.\n"); 150 } 151}; 152 153class IntSinkPin : public SimObject 154{ 155 public: 156 IntDev * device; 157 int number; 158 159 typedef X86IntSinkPinParams Params; 160 161 const Params * 162 params() const 163 { 164 return dynamic_cast<const Params *>(_params); 165 } 166 167 IntSinkPin(Params *p) : SimObject(p), 168 device(dynamic_cast<IntDev *>(p->device)), number(p->number) 169 { 170 assert(device); 171 } 172}; 173 174class IntSourcePin : public SimObject 175{ 176 protected: 177 std::vector<IntSinkPin *> sinks; 178 179 public: 180 typedef X86IntSourcePinParams Params; 181 182 const Params * 183 params() const 184 { 185 return dynamic_cast<const Params *>(_params); 186 } 187 188 void 189 addSink(IntSinkPin *sink) 190 { 191 sinks.push_back(sink); 192 } 193 194 void 195 raise() 196 { 197 for (int i = 0; i < sinks.size(); i++) { 198 const IntSinkPin &pin = *sinks[i]; 199 pin.device->raiseInterruptPin(pin.number); 200 } 201 } 202 203 void 204 lower() 205 { 206 for (int i = 0; i < sinks.size(); i++) { 207 const IntSinkPin &pin = *sinks[i]; 208 pin.device->lowerInterruptPin(pin.number); 209 } 210 } 211 212 IntSourcePin(Params *p) : SimObject(p) 213 {} 214}; 215 216class IntLine : public SimObject 217{ 218 protected: 219 IntSourcePin *source; 220 IntSinkPin *sink; 221 222 public: 223 typedef X86IntLineParams Params; 224 225 const Params * 226 params() const 227 { 228 return dynamic_cast<const Params *>(_params); 229 } 230 231 IntLine(Params *p) : SimObject(p), source(p->source), sink(p->sink) 232 { 233 source->addSink(sink); 234 } 235}; 236 237} // namespace X86ISA 238 239#endif //__DEV_X86_INTDEV_HH__ 240