/*
 * Copyright 2020 Google, Inc.
 *
 * 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.
 */

#include "arch/arm/fastmodel/CortexR52/evs.hh"

#include "arch/arm/fastmodel/CortexR52/cortex_r52.hh"
#include "arch/arm/fastmodel/iris/cpu.hh"
#include "base/logging.hh"
#include "sim/core.hh"
#include "systemc/tlm_bridge/gem5_to_tlm.hh"

namespace gem5
{

GEM5_DEPRECATED_NAMESPACE(FastModel, fastmodel);
namespace fastmodel
{

template <class Types>
void
ScxEvsCortexR52<Types>::setClkPeriod(Tick clk_period)
{
    clockRateControl->set_mul_div(sim_clock::as_int::s, clk_period);
}

template <class Types>
void
ScxEvsCortexR52<Types>::setSysCounterFrq(uint64_t sys_counter_frq)
{
    panic("Not implemented for R52.");
}

template <class Types>
void
ScxEvsCortexR52<Types>::setCluster(SimObject *cluster)
{
    gem5CpuCluster = dynamic_cast<CortexR52Cluster *>(cluster);
    panic_if(!gem5CpuCluster, "Cluster should be of type CortexR52Cluster");
}

template <class Types>
ScxEvsCortexR52<Types>::CorePins::CorePins(Evs *_evs, int _cpu) :
        name(csprintf("%s.cpu%s", _evs->name(), _cpu)),
    evs(_evs), cpu(_cpu),
    llpp(evs->llpp[cpu], name + ".llpp", -1),
    flash(evs->flash[cpu], name + ".flash", -1),
    amba(evs->amba[cpu], name + ".amba", -1)
{
    for (int i = 0; i < Evs::PpiCount; i++) {
        ppis.emplace_back(
                new CoreInt(csprintf("%s.ppi[%d]", name, i), i, this));
    }
}


template <class Types>
ScxEvsCortexR52<Types>::ScxEvsCortexR52(
        const sc_core::sc_module_name &mod_name, const Params &p) :
    Base(mod_name),
    params(p)
{
    for (int i = 0; i < CoreCount; i++)
        corePins.emplace_back(new CorePins(this, i));

    for (int i = 0; i < SpiCount; i++) {
        spis.emplace_back(
                new ClstrInt(csprintf("%s.spi[%d]", name(), i), i, this));
    }

    clockRateControl.bind(this->clock_rate_s);
    signalInterrupt.bind(this->signal_interrupt);
}

template <class Types>
void
ScxEvsCortexR52<Types>::sendFunc(PacketPtr pkt)
{
    auto *trans = sc_gem5::packet2payload(pkt);
    panic_if(Base::amba[0]->transport_dbg(*trans) != trans->get_data_length(),
            "Didn't send entire functional packet!");
    trans->release();
}

template <class Types>
Port &
ScxEvsCortexR52<Types>::gem5_getPort(const std::string &if_name, int idx)
{
    if (if_name == "llpp") {
        return this->corePins.at(idx)->llpp;
    } else if (if_name == "flash") {
        return this->corePins.at(idx)->flash;
    } else if (if_name == "amba") {
        return this->corePins.at(idx)->amba;
    } else if (if_name == "spi") {
        return *this->spis.at(idx);
    } else if (if_name.substr(0, 3) == "ppi") {
        int cpu;
        try {
            cpu = std::stoi(if_name.substr(4));
        } catch (const std::invalid_argument &a) {
            panic("Couldn't find CPU number in %s.", if_name);
        }
        return *this->corePins.at(cpu)->ppis.at(idx);
    } else {
        return Base::gem5_getPort(if_name, idx);
    }
}

template class ScxEvsCortexR52<ScxEvsCortexR52x1Types>;
template class ScxEvsCortexR52<ScxEvsCortexR52x2Types>;
template class ScxEvsCortexR52<ScxEvsCortexR52x3Types>;
template class ScxEvsCortexR52<ScxEvsCortexR52x4Types>;

} // namespace fastmodel
} // namespace gem5