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Diffstat (limited to 'src/dev/x86/i82094aa.hh')
-rw-r--r-- | src/dev/x86/i82094aa.hh | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/dev/x86/i82094aa.hh b/src/dev/x86/i82094aa.hh new file mode 100644 index 000000000..b11e2bcb1 --- /dev/null +++ b/src/dev/x86/i82094aa.hh @@ -0,0 +1,127 @@ +/* + * 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 "base/bitunion.hh" +#include "base/range_map.hh" +#include "dev/io_device.hh" +#include "dev/x86/intdev.hh" +#include "params/I82094AA.hh" + +namespace X86ISA +{ + +class I8259; + +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 id; + uint8_t arbId; + + 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); + + Tick read(PacketPtr pkt); + Tick write(PacketPtr pkt); + + void addressRanges(AddrRangeList &range_list) + { + range_list.clear(); + range_list.push_back(RangeEx(pioAddr, pioAddr + 4)); + range_list.push_back(RangeEx(pioAddr + 16, pioAddr + 20)); + } + + void getIntAddrRange(AddrRangeList &range_list) + { + range_list.clear(); + range_list.push_back(RangeEx(x86InterruptAddress(1, 0), + x86InterruptAddress(1, 0) + PhysAddrAPICRangeSize)); + } + + 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); +}; + +}; // namespace X86ISA + +#endif //__DEV_X86_SOUTH_BRIDGE_I8254_HH__ |