external_master.cc

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/*
 * Copyright (c) 2012-2014 ARM Limited
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 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
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 * met: redistributions of source code must retain the above copyright
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 * redistributions in binary form must reproduce the above copyright
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 * this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * Authors: Andrew Bardsley
 *          Curtis Dunham
 *          Christian Menard
 */

#include "mem/external_master.hh"

#include <cctype>
#include <iomanip>

#include "base/trace.hh"
#include "debug/ExternalPort.hh"
#include "sim/system.hh"

std::map<std::string, ExternalMaster::Handler *>
    ExternalMaster::portHandlers;

ExternalMaster::ExternalMaster(ExternalMasterParams *params) :
    MemObject(params),
    externalPort(NULL),
    portName(params->name + ".port"),
    portType(params->port_type),
    portData(params->port_data),
    masterId(params->system->getMasterId(params->name))
{}

BaseMasterPort &
ExternalMaster::getMasterPort(const std::string &if_name,
    PortID idx)
{
    if (if_name == "port") {
        DPRINTF(ExternalPort, "Trying to bind external port: %s %s\n",
            portType, portName);

        if (!externalPort) {
            auto handlerIter = portHandlers.find(portType);

            if (handlerIter == portHandlers.end())
                fatal("Can't find port handler type '%s'\n", portType);

            externalPort = portHandlers[portType]->getExternalPort(portName,
                *this, portData);

            if (!externalPort) {
                fatal("%s: Can't find external port type: %s"
                    " port_data: '%s'\n", portName, portType, portData);
            }
        }
        return *externalPort;
    } else {
        return MemObject::getMasterPort(if_name, idx);
    }
}

void
ExternalMaster::init()
{
    if (!externalPort) {
        fatal("ExternalMaster %s: externalPort not set!\n", name());
    } else if (!externalPort->isConnected()) {
        fatal("ExternalMaster %s is unconnected!\n", name());
    }
}

ExternalMaster *
ExternalMasterParams::create()
{
    return new ExternalMaster(this);
}

void
ExternalMaster::registerHandler(const std::string &handler_name,
    Handler *handler)
{
    portHandlers[handler_name] = handler;
}