kernel.cc revision 13094
112837Sgabeblack@google.com/* 212837Sgabeblack@google.com * Copyright 2018 Google, Inc. 312837Sgabeblack@google.com * 412837Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 512837Sgabeblack@google.com * modification, are permitted provided that the following conditions are 612837Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 712837Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 812837Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 912837Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1012837Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1112837Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1212837Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1312837Sgabeblack@google.com * this software without specific prior written permission. 1412837Sgabeblack@google.com * 1512837Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1612837Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1712837Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1812837Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 1912837Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2012837Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2112837Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2212837Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2312837Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2412837Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2512837Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2612837Sgabeblack@google.com * 2712837Sgabeblack@google.com * Authors: Gabe Black 2812837Sgabeblack@google.com */ 2912837Sgabeblack@google.com 3012837Sgabeblack@google.com#include "systemc/core/kernel.hh" 3112982Sgabeblack@google.com 3212982Sgabeblack@google.com#include "base/logging.hh" 3313059Sgabeblack@google.com#include "systemc/core/channel.hh" 3412982Sgabeblack@google.com#include "systemc/core/module.hh" 3512953Sgabeblack@google.com#include "systemc/core/scheduler.hh" 3612837Sgabeblack@google.com 3712982Sgabeblack@google.comnamespace sc_gem5 3812837Sgabeblack@google.com{ 3912837Sgabeblack@google.com 4012990Sgabeblack@google.comnamespace 4112990Sgabeblack@google.com{ 4212990Sgabeblack@google.com 4313077Sgabeblack@google.combool scMainDone = false; 4412990Sgabeblack@google.combool stopAfterCallbacks = false; 4512990Sgabeblack@google.combool startComplete = false; 4612990Sgabeblack@google.combool endComplete = false; 4712990Sgabeblack@google.com 4812990Sgabeblack@google.comsc_core::sc_status _status = sc_core::SC_ELABORATION; 4912990Sgabeblack@google.com 5012990Sgabeblack@google.com} // anonymous namespace 5112990Sgabeblack@google.com 5212990Sgabeblack@google.combool Kernel::startOfSimulationComplete() { return startComplete; } 5312990Sgabeblack@google.combool Kernel::endOfSimulationComplete() { return endComplete; } 5412990Sgabeblack@google.com 5513077Sgabeblack@google.combool Kernel::scMainFinished() { return scMainDone; } 5613077Sgabeblack@google.comvoid Kernel::scMainFinished(bool finished) { scMainDone = finished; } 5713077Sgabeblack@google.com 5812990Sgabeblack@google.comsc_core::sc_status Kernel::status() { return _status; } 5912990Sgabeblack@google.comvoid Kernel::status(sc_core::sc_status s) { _status = s; } 6012990Sgabeblack@google.com 6112954Sgabeblack@google.comKernel::Kernel(Params *params) : 6213042Sgabeblack@google.com SimObject(params), t0Event(this, false, EventBase::Default_Pri - 1) 6313042Sgabeblack@google.com{ 6413042Sgabeblack@google.com // Install ourselves as the scheduler's event manager. 6513042Sgabeblack@google.com ::sc_gem5::scheduler.setEventQueue(eventQueue()); 6613042Sgabeblack@google.com} 6712982Sgabeblack@google.com 6812982Sgabeblack@google.comvoid 6912982Sgabeblack@google.comKernel::init() 7012982Sgabeblack@google.com{ 7113077Sgabeblack@google.com if (scMainDone) 7213077Sgabeblack@google.com return; 7313077Sgabeblack@google.com 7413094Sgabeblack@google.com if (stopAfterCallbacks) 7513094Sgabeblack@google.com fatal("Simulation called sc_stop during elaboration.\n"); 7613094Sgabeblack@google.com 7712990Sgabeblack@google.com status(::sc_core::SC_BEFORE_END_OF_ELABORATION); 7813045Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 7913045Sgabeblack@google.com callbackModule(m); 8012982Sgabeblack@google.com m->sc_mod()->before_end_of_elaboration(); 8113059Sgabeblack@google.com for (auto p: m->ports) 8213059Sgabeblack@google.com p->before_end_of_elaboration(); 8313059Sgabeblack@google.com for (auto e: m->exports) 8413059Sgabeblack@google.com e->before_end_of_elaboration(); 8513045Sgabeblack@google.com } 8613045Sgabeblack@google.com callbackModule(nullptr); 8713059Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 8813059Sgabeblack@google.com c->sc_chan()->before_end_of_elaboration(); 8912982Sgabeblack@google.com 9012990Sgabeblack@google.com if (stopAfterCallbacks) 9112982Sgabeblack@google.com stopWork(); 9212982Sgabeblack@google.com} 9312982Sgabeblack@google.com 9412982Sgabeblack@google.comvoid 9512982Sgabeblack@google.comKernel::regStats() 9612982Sgabeblack@google.com{ 9713077Sgabeblack@google.com if (scMainDone) 9813077Sgabeblack@google.com return; 9913077Sgabeblack@google.com 10013053Sgabeblack@google.com for (auto m: sc_gem5::allModules) 10113053Sgabeblack@google.com for (auto p: m->ports) 10213053Sgabeblack@google.com p->_gem5Finalize(); 10313053Sgabeblack@google.com 10412990Sgabeblack@google.com status(::sc_core::SC_END_OF_ELABORATION); 10513059Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 10612982Sgabeblack@google.com m->sc_mod()->end_of_elaboration(); 10713059Sgabeblack@google.com for (auto p: m->ports) 10813059Sgabeblack@google.com p->end_of_elaboration(); 10913059Sgabeblack@google.com for (auto e: m->exports) 11013059Sgabeblack@google.com e->end_of_elaboration(); 11113059Sgabeblack@google.com } 11213059Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 11313059Sgabeblack@google.com c->sc_chan()->end_of_elaboration(); 11412982Sgabeblack@google.com 11512990Sgabeblack@google.com if (stopAfterCallbacks) 11612982Sgabeblack@google.com stopWork(); 11712982Sgabeblack@google.com} 11812953Sgabeblack@google.com 11912953Sgabeblack@google.comvoid 12012953Sgabeblack@google.comKernel::startup() 12112837Sgabeblack@google.com{ 12213077Sgabeblack@google.com if (scMainDone) 12313077Sgabeblack@google.com return; 12413077Sgabeblack@google.com 12512990Sgabeblack@google.com status(::sc_core::SC_START_OF_SIMULATION); 12613059Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 12712982Sgabeblack@google.com m->sc_mod()->start_of_simulation(); 12813059Sgabeblack@google.com for (auto p: m->ports) 12913059Sgabeblack@google.com p->start_of_simulation(); 13013059Sgabeblack@google.com for (auto e: m->exports) 13113059Sgabeblack@google.com e->start_of_simulation(); 13213059Sgabeblack@google.com } 13313059Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 13413059Sgabeblack@google.com c->sc_chan()->start_of_simulation(); 13512982Sgabeblack@google.com 13612990Sgabeblack@google.com startComplete = true; 13712982Sgabeblack@google.com 13812990Sgabeblack@google.com if (stopAfterCallbacks) 13912982Sgabeblack@google.com stopWork(); 14012982Sgabeblack@google.com 14112982Sgabeblack@google.com kernel->status(::sc_core::SC_RUNNING); 14212982Sgabeblack@google.com 14312953Sgabeblack@google.com schedule(t0Event, curTick()); 14412954Sgabeblack@google.com // Run update once before the event queue starts. 14512954Sgabeblack@google.com ::sc_gem5::scheduler.update(); 14612953Sgabeblack@google.com} 14712953Sgabeblack@google.com 14812953Sgabeblack@google.comvoid 14912982Sgabeblack@google.comKernel::stop() 15012982Sgabeblack@google.com{ 15112982Sgabeblack@google.com if (status() < ::sc_core::SC_RUNNING) 15212990Sgabeblack@google.com stopAfterCallbacks = true; 15312982Sgabeblack@google.com else 15412982Sgabeblack@google.com stopWork(); 15512982Sgabeblack@google.com} 15612982Sgabeblack@google.com 15712982Sgabeblack@google.comvoid 15812982Sgabeblack@google.comKernel::stopWork() 15912982Sgabeblack@google.com{ 16012990Sgabeblack@google.com status(::sc_core::SC_END_OF_SIMULATION); 16113059Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 16212982Sgabeblack@google.com m->sc_mod()->end_of_simulation(); 16313059Sgabeblack@google.com for (auto p: m->ports) 16413059Sgabeblack@google.com p->end_of_simulation(); 16513059Sgabeblack@google.com for (auto e: m->exports) 16613059Sgabeblack@google.com e->end_of_simulation(); 16713059Sgabeblack@google.com } 16813059Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 16913059Sgabeblack@google.com c->sc_chan()->end_of_simulation(); 17012982Sgabeblack@google.com 17112990Sgabeblack@google.com endComplete = true; 17212982Sgabeblack@google.com 17312990Sgabeblack@google.com status(::sc_core::SC_STOPPED); 17412982Sgabeblack@google.com} 17512982Sgabeblack@google.com 17612982Sgabeblack@google.comvoid 17712953Sgabeblack@google.comKernel::t0Handler() 17812953Sgabeblack@google.com{ 17913067Sgabeblack@google.com ::sc_gem5::scheduler.initPhase(); 18012982Sgabeblack@google.com 18112982Sgabeblack@google.com status(::sc_core::SC_RUNNING); 18212837Sgabeblack@google.com} 18312837Sgabeblack@google.com 18412982Sgabeblack@google.comKernel *kernel; 18512837Sgabeblack@google.com 18612982Sgabeblack@google.com} // namespace sc_gem5 18712982Sgabeblack@google.com 18812982Sgabeblack@google.comsc_gem5::Kernel * 18912837Sgabeblack@google.comSystemC_KernelParams::create() 19012837Sgabeblack@google.com{ 19112982Sgabeblack@google.com panic_if(sc_gem5::kernel, 19212982Sgabeblack@google.com "Only one systemc kernel object may be defined.\n"); 19312982Sgabeblack@google.com sc_gem5::kernel = new sc_gem5::Kernel(this); 19412982Sgabeblack@google.com return sc_gem5::kernel; 19512837Sgabeblack@google.com} 196