kernel.cc revision 13094:e74742df378b
112852Sgabeblack@google.com/* 212852Sgabeblack@google.com * Copyright 2018 Google, Inc. 312852Sgabeblack@google.com * 412852Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 512852Sgabeblack@google.com * modification, are permitted provided that the following conditions are 612852Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 712852Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 812852Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 912852Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1012852Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1112852Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1212852Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1312852Sgabeblack@google.com * this software without specific prior written permission. 1412852Sgabeblack@google.com * 1512852Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1612852Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1712852Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1812852Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 1912852Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2012852Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2112852Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2212852Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2312852Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2412852Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2512852Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2612852Sgabeblack@google.com * 2712852Sgabeblack@google.com * Authors: Gabe Black 2812852Sgabeblack@google.com */ 2912852Sgabeblack@google.com 3012852Sgabeblack@google.com#include "systemc/core/kernel.hh" 3112852Sgabeblack@google.com 3212852Sgabeblack@google.com#include "base/logging.hh" 3312852Sgabeblack@google.com#include "systemc/core/channel.hh" 3412852Sgabeblack@google.com#include "systemc/core/module.hh" 3512852Sgabeblack@google.com#include "systemc/core/scheduler.hh" 3612852Sgabeblack@google.com 3712852Sgabeblack@google.comnamespace sc_gem5 3812852Sgabeblack@google.com{ 3912852Sgabeblack@google.com 4012852Sgabeblack@google.comnamespace 4112852Sgabeblack@google.com{ 4212852Sgabeblack@google.com 4312852Sgabeblack@google.combool scMainDone = false; 4412852Sgabeblack@google.combool stopAfterCallbacks = false; 4512852Sgabeblack@google.combool startComplete = false; 4612852Sgabeblack@google.combool endComplete = false; 4712852Sgabeblack@google.com 4812852Sgabeblack@google.comsc_core::sc_status _status = sc_core::SC_ELABORATION; 4912852Sgabeblack@google.com 5012852Sgabeblack@google.com} // anonymous namespace 5112852Sgabeblack@google.com 5212852Sgabeblack@google.combool Kernel::startOfSimulationComplete() { return startComplete; } 5312852Sgabeblack@google.combool Kernel::endOfSimulationComplete() { return endComplete; } 5412852Sgabeblack@google.com 5512852Sgabeblack@google.combool Kernel::scMainFinished() { return scMainDone; } 5612852Sgabeblack@google.comvoid Kernel::scMainFinished(bool finished) { scMainDone = finished; } 5712852Sgabeblack@google.com 5812852Sgabeblack@google.comsc_core::sc_status Kernel::status() { return _status; } 5912852Sgabeblack@google.comvoid Kernel::status(sc_core::sc_status s) { _status = s; } 6012852Sgabeblack@google.com 6112905Sgabeblack@google.comKernel::Kernel(Params *params) : 6212905Sgabeblack@google.com SimObject(params), t0Event(this, false, EventBase::Default_Pri - 1) 6312905Sgabeblack@google.com{ 6412852Sgabeblack@google.com // Install ourselves as the scheduler's event manager. 6512852Sgabeblack@google.com ::sc_gem5::scheduler.setEventQueue(eventQueue()); 6612852Sgabeblack@google.com} 6712852Sgabeblack@google.com 6812852Sgabeblack@google.comvoid 6912852Sgabeblack@google.comKernel::init() 7012852Sgabeblack@google.com{ 7112852Sgabeblack@google.com if (scMainDone) 7212852Sgabeblack@google.com return; 7312852Sgabeblack@google.com 7412852Sgabeblack@google.com if (stopAfterCallbacks) 7512852Sgabeblack@google.com fatal("Simulation called sc_stop during elaboration.\n"); 7612852Sgabeblack@google.com 7712852Sgabeblack@google.com status(::sc_core::SC_BEFORE_END_OF_ELABORATION); 7812852Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 7912852Sgabeblack@google.com callbackModule(m); 8012852Sgabeblack@google.com m->sc_mod()->before_end_of_elaboration(); 8112852Sgabeblack@google.com for (auto p: m->ports) 8212852Sgabeblack@google.com p->before_end_of_elaboration(); 8312852Sgabeblack@google.com for (auto e: m->exports) 8412852Sgabeblack@google.com e->before_end_of_elaboration(); 8512852Sgabeblack@google.com } 8612852Sgabeblack@google.com callbackModule(nullptr); 8712852Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 8812852Sgabeblack@google.com c->sc_chan()->before_end_of_elaboration(); 8912852Sgabeblack@google.com 9012852Sgabeblack@google.com if (stopAfterCallbacks) 9112852Sgabeblack@google.com stopWork(); 9212852Sgabeblack@google.com} 9312852Sgabeblack@google.com 9412852Sgabeblack@google.comvoid 9512852Sgabeblack@google.comKernel::regStats() 9612852Sgabeblack@google.com{ 9712852Sgabeblack@google.com if (scMainDone) 9812852Sgabeblack@google.com return; 9912852Sgabeblack@google.com 10012852Sgabeblack@google.com for (auto m: sc_gem5::allModules) 10112852Sgabeblack@google.com for (auto p: m->ports) 10212852Sgabeblack@google.com p->_gem5Finalize(); 10312852Sgabeblack@google.com 10412852Sgabeblack@google.com status(::sc_core::SC_END_OF_ELABORATION); 10512852Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 10612852Sgabeblack@google.com m->sc_mod()->end_of_elaboration(); 10712852Sgabeblack@google.com for (auto p: m->ports) 10812852Sgabeblack@google.com p->end_of_elaboration(); 10912852Sgabeblack@google.com for (auto e: m->exports) 11012852Sgabeblack@google.com e->end_of_elaboration(); 11112852Sgabeblack@google.com } 11212852Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 11312877Sgabeblack@google.com c->sc_chan()->end_of_elaboration(); 11412905Sgabeblack@google.com 11512905Sgabeblack@google.com if (stopAfterCallbacks) 11612905Sgabeblack@google.com stopWork(); 11712905Sgabeblack@google.com} 11812905Sgabeblack@google.com 11912905Sgabeblack@google.comvoid 12012905Sgabeblack@google.comKernel::startup() 12112905Sgabeblack@google.com{ 12212877Sgabeblack@google.com if (scMainDone) 12312877Sgabeblack@google.com return; 12412877Sgabeblack@google.com 12513241Sgabeblack@google.com status(::sc_core::SC_START_OF_SIMULATION); 12612877Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 12713241Sgabeblack@google.com m->sc_mod()->start_of_simulation(); 12812877Sgabeblack@google.com for (auto p: m->ports) 12913241Sgabeblack@google.com p->start_of_simulation(); 13012877Sgabeblack@google.com for (auto e: m->exports) 13113241Sgabeblack@google.com e->start_of_simulation(); 13212877Sgabeblack@google.com } 13313241Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 13412877Sgabeblack@google.com c->sc_chan()->start_of_simulation(); 13513241Sgabeblack@google.com 13612877Sgabeblack@google.com startComplete = true; 13713241Sgabeblack@google.com 13812877Sgabeblack@google.com if (stopAfterCallbacks) 13913241Sgabeblack@google.com stopWork(); 14012877Sgabeblack@google.com 14112852Sgabeblack@google.com kernel->status(::sc_core::SC_RUNNING); 14212852Sgabeblack@google.com 14312852Sgabeblack@google.com schedule(t0Event, curTick()); 14412852Sgabeblack@google.com // Run update once before the event queue starts. 14512852Sgabeblack@google.com ::sc_gem5::scheduler.update(); 14613241Sgabeblack@google.com} 14712852Sgabeblack@google.com 14813241Sgabeblack@google.comvoid 14912852Sgabeblack@google.comKernel::stop() 15013241Sgabeblack@google.com{ 15112852Sgabeblack@google.com if (status() < ::sc_core::SC_RUNNING) 15213241Sgabeblack@google.com stopAfterCallbacks = true; 15312852Sgabeblack@google.com else 15413241Sgabeblack@google.com stopWork(); 15512852Sgabeblack@google.com} 15613241Sgabeblack@google.com 15712852Sgabeblack@google.comvoid 15813241Sgabeblack@google.comKernel::stopWork() 15912852Sgabeblack@google.com{ 16013241Sgabeblack@google.com status(::sc_core::SC_END_OF_SIMULATION); 16112852Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 16213241Sgabeblack@google.com m->sc_mod()->end_of_simulation(); 16312852Sgabeblack@google.com for (auto p: m->ports) 16413241Sgabeblack@google.com p->end_of_simulation(); 16512852Sgabeblack@google.com for (auto e: m->exports) 16612877Sgabeblack@google.com e->end_of_simulation(); 16712877Sgabeblack@google.com } 16812877Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 16912877Sgabeblack@google.com c->sc_chan()->end_of_simulation(); 17012913Sgabeblack@google.com 17112913Sgabeblack@google.com endComplete = true; 17212913Sgabeblack@google.com 17312852Sgabeblack@google.com status(::sc_core::SC_STOPPED); 17412852Sgabeblack@google.com} 17513241Sgabeblack@google.com 17613241Sgabeblack@google.comvoid 17712852Sgabeblack@google.comKernel::t0Handler() 17813241Sgabeblack@google.com{ 17912852Sgabeblack@google.com ::sc_gem5::scheduler.initPhase(); 18012852Sgabeblack@google.com 18112852Sgabeblack@google.com status(::sc_core::SC_RUNNING); 18212852Sgabeblack@google.com} 18312852Sgabeblack@google.com 18412852Sgabeblack@google.comKernel *kernel; 18512852Sgabeblack@google.com 18612852Sgabeblack@google.com} // namespace sc_gem5 18712852Sgabeblack@google.com 18812852Sgabeblack@google.comsc_gem5::Kernel * 18912852Sgabeblack@google.comSystemC_KernelParams::create() 19012852Sgabeblack@google.com{ 19112852Sgabeblack@google.com panic_if(sc_gem5::kernel, 19212852Sgabeblack@google.com "Only one systemc kernel object may be defined.\n"); 19312852Sgabeblack@google.com sc_gem5::kernel = new sc_gem5::Kernel(this); 19412852Sgabeblack@google.com return sc_gem5::kernel; 19512852Sgabeblack@google.com} 196