i82094aa.hh revision 9235:5aa4896ed55a
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_I82094AA_HH__ 32#define __DEV_X86_I82094AA_HH__ 33 34#include <map> 35 36#include "base/bitunion.hh" 37#include "dev/x86/intdev.hh" 38#include "dev/io_device.hh" 39#include "params/I82094AA.hh" 40 41namespace X86ISA 42{ 43 44class I8259; 45class Interrupts; 46 47class I82094AA : public PioDevice, public IntDev 48{ 49 public: 50 BitUnion64(RedirTableEntry) 51 Bitfield<63, 32> topDW; 52 Bitfield<55, 32> topReserved; 53 Bitfield<31, 0> bottomDW; 54 Bitfield<31, 17> bottomReserved; 55 Bitfield<63, 56> dest; 56 Bitfield<16> mask; 57 Bitfield<15> trigger; 58 Bitfield<14> remoteIRR; 59 Bitfield<13> polarity; 60 Bitfield<12> deliveryStatus; 61 Bitfield<11> destMode; 62 Bitfield<10, 8> deliveryMode; 63 Bitfield<7, 0> vector; 64 EndBitUnion(RedirTableEntry) 65 66 protected: 67 Tick latency; 68 Addr pioAddr; 69 70 I8259 * extIntPic; 71 72 uint8_t regSel; 73 uint8_t initialApicId; 74 uint8_t id; 75 uint8_t arbId; 76 77 uint64_t lowestPriorityOffset; 78 79 static const uint8_t TableSize = 24; 80 // This implementation is based on version 0x11, but 0x14 avoids having 81 // to deal with the arbitration and APIC bus guck. 82 static const uint8_t APICVersion = 0x14; 83 84 RedirTableEntry redirTable[TableSize]; 85 bool pinStates[TableSize]; 86 87 public: 88 typedef I82094AAParams Params; 89 90 const Params * 91 params() const 92 { 93 return dynamic_cast<const Params *>(_params); 94 } 95 96 I82094AA(Params *p); 97 98 void init(); 99 100 Tick read(PacketPtr pkt); 101 Tick write(PacketPtr pkt); 102 103 AddrRangeList getAddrRanges() const 104 { 105 AddrRangeList ranges; 106 ranges.push_back(RangeEx(pioAddr, pioAddr + 4)); 107 ranges.push_back(RangeEx(pioAddr + 16, pioAddr + 20)); 108 return ranges; 109 } 110 111 AddrRangeList getIntAddrRange() const 112 { 113 AddrRangeList ranges; 114 ranges.push_back(RangeEx(x86InterruptAddress(initialApicId, 0), 115 x86InterruptAddress(initialApicId, 0) + 116 PhysAddrAPICRangeSize)); 117 return ranges; 118 } 119 120 void writeReg(uint8_t offset, uint32_t value); 121 uint32_t readReg(uint8_t offset); 122 123 MasterPort &getMasterPort(const std::string &if_name, int idx = -1) 124 { 125 if (if_name == "int_master") 126 return intMasterPort; 127 return PioDevice::getMasterPort(if_name, idx); 128 } 129 130 void signalInterrupt(int line); 131 void raiseInterruptPin(int number); 132 void lowerInterruptPin(int number); 133 134 virtual void serialize(std::ostream &os); 135 virtual void unserialize(Checkpoint *cp, const std::string §ion); 136}; 137 138} // namespace X86ISA 139 140#endif //__DEV_X86_SOUTH_BRIDGE_I8254_HH__ 141