dtod.cc

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/*
 * Copyright (c) 2004-2006 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
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 */
 
#include "dev/sparc/dtod.hh"
 
#include <sys/time.h>
 
#include <deque>
#include <string>
#include <vector>
 
#include "base/time.hh"
#include "base/trace.hh"
#include "dev/platform.hh"
#include "mem/packet_access.hh"
#include "mem/port.hh"
#include "sim/system.hh"
 
using namespace std;
 
DumbTOD::DumbTOD(const Params *p)
    : BasicPioDevice(p, 0x08)
{
    struct tm tm = p->time;
    todTime = mkutctime(&tm);
 
    DPRINTFN("Real-time clock set to %s\n", asctime(&tm));
    DPRINTFN("Real-time clock set to %d\n", todTime);
}
 
Tick
DumbTOD::read(PacketPtr pkt)
{
    assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
    assert(pkt->getSize() == 8);
 
    pkt->setBE(todTime);
    todTime += 1000;
 
    pkt->makeAtomicResponse();
    return pioDelay;
}
 
Tick
DumbTOD::write(PacketPtr pkt)
{
    panic("Dumb tod device doesn't support writes\n");
}
 
void
DumbTOD::serialize(CheckpointOut &cp) const
{
    SERIALIZE_SCALAR(todTime);
}
 
void
DumbTOD::unserialize(CheckpointIn &cp)
{
    UNSERIALIZE_SCALAR(todTime);
}
 
DumbTOD *
DumbTODParams::create()
{
    return new DumbTOD(this);
}