158 lines
4.1 KiB
C++
Executable file
158 lines
4.1 KiB
C++
Executable file
/*
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* Copyright (c) 2004-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Ali Saidi
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* Andrew Schultz
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* Miguel Serrano
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*/
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/** @file
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* Malta I/O including PIC, PIT, RTC, DMA
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*/
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#include "dev/mips/malta_io.hh"
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#include <sys/time.h>
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#include <deque>
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#include <string>
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#include <vector>
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#include "base/time.hh"
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#include "base/trace.hh"
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#include "config/the_isa.hh"
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#include "debug/Malta.hh"
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#include "dev/mips/malta.hh"
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#include "dev/mips/malta_cchip.hh"
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#include "dev/mips/maltareg.h"
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#include "dev/rtcreg.h"
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#include "mem/packet.hh"
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#include "mem/packet_access.hh"
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#include "mem/port.hh"
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#include "params/MaltaIO.hh"
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#include "sim/system.hh"
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using namespace std;
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using namespace TheISA;
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MaltaIO::RTC::RTC(const string &name, const MaltaIOParams *p)
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: MC146818(p->malta, name, p->time, p->year_is_bcd, p->frequency),
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malta(p->malta)
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{
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}
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MaltaIO::MaltaIO(const Params *p)
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: BasicPioDevice(p, 0x100), malta(p->malta),
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pitimer(this, p->name + "pitimer"), rtc(p->name + ".rtc", p)
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{
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// set the back pointer from malta to myself
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malta->io = this;
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timerData = 0;
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picr = 0;
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picInterrupting = false;
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}
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Tick
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MaltaIO::frequency() const
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{
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return SimClock::Frequency / params()->frequency;
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}
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Tick
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MaltaIO::read(PacketPtr pkt)
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{
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panic("MaltaIO::read(...) not implemented inside malta_io.cc");
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return pioDelay;
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}
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Tick
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MaltaIO::write(PacketPtr pkt)
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{
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panic("MaltaIO::write(...) not implemented inside malta_io.cc");
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return pioDelay;
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}
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void
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MaltaIO::postIntr(uint8_t interrupt)
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{
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malta->cchip->postIntr(interrupt);
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DPRINTF(Malta, "posting pic interrupt to cchip\n");
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}
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void
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MaltaIO::clearIntr(uint8_t interrupt)
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{
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malta->cchip->clearIntr(interrupt);
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DPRINTF(Malta, "clear pic interrupt to cchip\n");
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}
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void
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MaltaIO::serialize(CheckpointOut &cp) const
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{
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SERIALIZE_SCALAR(timerData);
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SERIALIZE_SCALAR(mask1);
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SERIALIZE_SCALAR(mask2);
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SERIALIZE_SCALAR(mode1);
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SERIALIZE_SCALAR(mode2);
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SERIALIZE_SCALAR(picr);
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SERIALIZE_SCALAR(picInterrupting);
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// Serialize the timers
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pitimer.serialize("pitimer", cp);
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rtc.serialize("rtc", cp);
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}
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void
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MaltaIO::unserialize(CheckpointIn &cp)
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{
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UNSERIALIZE_SCALAR(timerData);
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UNSERIALIZE_SCALAR(mask1);
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UNSERIALIZE_SCALAR(mask2);
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UNSERIALIZE_SCALAR(mode1);
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UNSERIALIZE_SCALAR(mode2);
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UNSERIALIZE_SCALAR(picr);
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UNSERIALIZE_SCALAR(picInterrupting);
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// Unserialize the timers
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pitimer.unserialize("pitimer", cp);
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rtc.unserialize("rtc", cp);
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}
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void
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MaltaIO::startup()
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{
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rtc.startup();
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pitimer.startup();
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}
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MaltaIO *
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MaltaIOParams::create()
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{
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return new MaltaIO(this);
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}
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