/*
 * Copyright (c) 2016 Jason Lowe-Power
 * 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: Jason Lowe-Power
 */

#include "learning_gem5/part2/simple_object.hh"

#include <iostream>

#include "mem/packet.hh"
#include "mem/request.hh"
#include "sim/system.hh"

SimpleObject::SimpleObject(SimpleObjectParams *params) :
    SimObject(params),
    masterId(params->system->getMasterId(this)),
    memPort(params->name + ".mem_side", this),
    isread(params->isread),
    event([this] { processEvent(); }, name() + ".event")
{
    std::cout << "Hello World! From a SimObject!" << std::endl;
}

void SimpleObject::processEvent()
{
    readAtomic();
}

void SimpleObject::readAtomic()
{
    uint32_t val = 0;

    RequestPtr req = std::make_shared<Request>(0x200000, 4, 0, masterId);
    PacketPtr pkt = Packet::createRead(req);

    pkt->dataStatic(&val);
    //    pkt->setData((const uint8_t *)&x);

    Tick t = memPort.sendAtomic(pkt);
    std::cout << "sendAtomic read " << t << " ticks." << std::endl;
    std::cout << "read value 0x" << std::hex << val << std::endl;
}

void SimpleObject::writeAtomic()
{
    RequestPtr req = std::make_shared<Request>(0x200000, 4, 0, masterId);
    PacketPtr pkt = Packet::createWrite(req);

    uint32_t x = 0xdeadbeef;
    pkt->dataStatic(&x);
    //    pkt->setData((const uint8_t *)&x);

    Tick t = memPort.sendAtomic(pkt);
    std::cout << "sendAtomic write " << t << " ticks." << std::endl;
}

void SimpleObject::startup()
{
    if (!isread) {
        writeAtomic();
    } else {
        schedule(event, 40000);
    }

}

SimpleObject*
SimpleObjectParams::create()
{
    return new SimpleObject(this);
}