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/*
* Copyright (c) 2008 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
*/
#ifndef __DEV_X86_I82094AA_HH__
#define __DEV_X86_I82094AA_HH__
#include <map>
#include "base/bitunion.hh"
#include "base/range_map.hh"
#include "dev/x86/intdev.hh"
#include "dev/io_device.hh"
#include "params/I82094AA.hh"
namespace X86ISA
{
class I8259;
class Interrupts;
class I82094AA : public PioDevice, public IntDev
{
public:
BitUnion64(RedirTableEntry)
Bitfield<63, 32> topDW;
Bitfield<55, 32> topReserved;
Bitfield<31, 0> bottomDW;
Bitfield<31, 17> bottomReserved;
Bitfield<63, 56> dest;
Bitfield<16> mask;
Bitfield<15> trigger;
Bitfield<14> remoteIRR;
Bitfield<13> polarity;
Bitfield<12> deliveryStatus;
Bitfield<11> destMode;
Bitfield<10, 8> deliveryMode;
Bitfield<7, 0> vector;
EndBitUnion(RedirTableEntry)
protected:
Tick latency;
Addr pioAddr;
I8259 * extIntPic;
uint8_t regSel;
uint8_t initialApicId;
uint8_t id;
uint8_t arbId;
uint64_t lowestPriorityOffset;
static const uint8_t TableSize = 24;
// This implementation is based on version 0x11, but 0x14 avoids having
// to deal with the arbitration and APIC bus guck.
static const uint8_t APICVersion = 0x14;
RedirTableEntry redirTable[TableSize];
bool pinStates[TableSize];
public:
typedef I82094AAParams Params;
const Params *
params() const
{
return dynamic_cast<const Params *>(_params);
}
I82094AA(Params *p);
void init();
Tick read(PacketPtr pkt);
Tick write(PacketPtr pkt);
AddrRangeList getAddrRanges()
{
AddrRangeList ranges;
ranges.push_back(RangeEx(pioAddr, pioAddr + 4));
ranges.push_back(RangeEx(pioAddr + 16, pioAddr + 20));
return ranges;
}
AddrRangeList getIntAddrRange()
{
AddrRangeList ranges;
ranges.push_back(RangeEx(x86InterruptAddress(initialApicId, 0),
x86InterruptAddress(initialApicId, 0) +
PhysAddrAPICRangeSize));
return ranges;
}
void writeReg(uint8_t offset, uint32_t value);
uint32_t readReg(uint8_t offset);
Port *getPort(const std::string &if_name, int idx = -1)
{
if (if_name == "int_port")
return intPort;
return PioDevice::getPort(if_name, idx);
}
void signalInterrupt(int line);
void raiseInterruptPin(int number);
void lowerInterruptPin(int number);
virtual void serialize(std::ostream &os);
virtual void unserialize(Checkpoint *cp, const std::string §ion);
};
} // namespace X86ISA
#endif //__DEV_X86_SOUTH_BRIDGE_I8254_HH__
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