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/*
* Copyright (c) 2004-2005 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: Ali Saidi
* Andrew Schultz
* Miguel Serrano
*/
/** @file
* Malta I/O including PIC, PIT, RTC, DMA
*/
#include <sys/time.h>
#include <deque>
#include <string>
#include <vector>
#include "base/time.hh"
#include "base/trace.hh"
#include "config/the_isa.hh"
#include "debug/Malta.hh"
#include "dev/mips/malta.hh"
#include "dev/mips/malta_cchip.hh"
#include "dev/mips/malta_io.hh"
#include "dev/mips/maltareg.h"
#include "dev/rtcreg.h"
#include "mem/packet.hh"
#include "mem/packet_access.hh"
#include "mem/port.hh"
#include "params/MaltaIO.hh"
#include "sim/system.hh"
using namespace std;
using namespace TheISA;
MaltaIO::RTC::RTC(const string &name, const MaltaIOParams *p)
: MC146818(p->malta, name, p->time, p->year_is_bcd, p->frequency),
malta(p->malta)
{
}
MaltaIO::MaltaIO(const Params *p)
: BasicPioDevice(p, 0x100), malta(p->malta),
pitimer(this, p->name + "pitimer"), rtc(p->name + ".rtc", p)
{
// set the back pointer from malta to myself
malta->io = this;
timerData = 0;
picr = 0;
picInterrupting = false;
}
Tick
MaltaIO::frequency() const
{
return SimClock::Frequency / params()->frequency;
}
Tick
MaltaIO::read(PacketPtr pkt)
{
panic("MaltaIO::read(...) not implemented inside malta_io.cc");
return pioDelay;
}
Tick
MaltaIO::write(PacketPtr pkt)
{
panic("MaltaIO::write(...) not implemented inside malta_io.cc");
return pioDelay;
}
void
MaltaIO::postIntr(uint8_t interrupt)
{
malta->cchip->postIntr(interrupt);
DPRINTF(Malta, "posting pic interrupt to cchip\n");
}
void
MaltaIO::clearIntr(uint8_t interrupt)
{
malta->cchip->clearIntr(interrupt);
DPRINTF(Malta, "clear pic interrupt to cchip\n");
}
void
MaltaIO::serialize(CheckpointOut &cp) const
{
SERIALIZE_SCALAR(timerData);
SERIALIZE_SCALAR(mask1);
SERIALIZE_SCALAR(mask2);
SERIALIZE_SCALAR(mode1);
SERIALIZE_SCALAR(mode2);
SERIALIZE_SCALAR(picr);
SERIALIZE_SCALAR(picInterrupting);
// Serialize the timers
pitimer.serialize("pitimer", cp);
rtc.serialize("rtc", cp);
}
void
MaltaIO::unserialize(CheckpointIn &cp)
{
UNSERIALIZE_SCALAR(timerData);
UNSERIALIZE_SCALAR(mask1);
UNSERIALIZE_SCALAR(mask2);
UNSERIALIZE_SCALAR(mode1);
UNSERIALIZE_SCALAR(mode2);
UNSERIALIZE_SCALAR(picr);
UNSERIALIZE_SCALAR(picInterrupting);
// Unserialize the timers
pitimer.unserialize("pitimer", cp);
rtc.unserialize("rtc", cp);
}
void
MaltaIO::startup()
{
rtc.startup();
pitimer.startup();
}
MaltaIO *
MaltaIOParams::create()
{
return new MaltaIO(this);
}
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