kernel.cc revision 13067
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 4312990Sgabeblack@google.combool stopAfterCallbacks = false; 4412990Sgabeblack@google.combool startComplete = false; 4512990Sgabeblack@google.combool endComplete = false; 4612990Sgabeblack@google.com 4712990Sgabeblack@google.comsc_core::sc_status _status = sc_core::SC_ELABORATION; 4812990Sgabeblack@google.com 4912990Sgabeblack@google.com} // anonymous namespace 5012990Sgabeblack@google.com 5112990Sgabeblack@google.combool Kernel::startOfSimulationComplete() { return startComplete; } 5212990Sgabeblack@google.combool Kernel::endOfSimulationComplete() { return endComplete; } 5312990Sgabeblack@google.com 5412990Sgabeblack@google.comsc_core::sc_status Kernel::status() { return _status; } 5512990Sgabeblack@google.comvoid Kernel::status(sc_core::sc_status s) { _status = s; } 5612990Sgabeblack@google.com 5712954Sgabeblack@google.comKernel::Kernel(Params *params) : 5813042Sgabeblack@google.com SimObject(params), t0Event(this, false, EventBase::Default_Pri - 1) 5913042Sgabeblack@google.com{ 6013042Sgabeblack@google.com // Install ourselves as the scheduler's event manager. 6113042Sgabeblack@google.com ::sc_gem5::scheduler.setEventQueue(eventQueue()); 6213042Sgabeblack@google.com} 6312982Sgabeblack@google.com 6412982Sgabeblack@google.comvoid 6512982Sgabeblack@google.comKernel::init() 6612982Sgabeblack@google.com{ 6712990Sgabeblack@google.com status(::sc_core::SC_BEFORE_END_OF_ELABORATION); 6813045Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 6913045Sgabeblack@google.com callbackModule(m); 7012982Sgabeblack@google.com m->sc_mod()->before_end_of_elaboration(); 7113059Sgabeblack@google.com for (auto p: m->ports) 7213059Sgabeblack@google.com p->before_end_of_elaboration(); 7313059Sgabeblack@google.com for (auto e: m->exports) 7413059Sgabeblack@google.com e->before_end_of_elaboration(); 7513045Sgabeblack@google.com } 7613045Sgabeblack@google.com callbackModule(nullptr); 7713059Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 7813059Sgabeblack@google.com c->sc_chan()->before_end_of_elaboration(); 7912982Sgabeblack@google.com 8012990Sgabeblack@google.com if (stopAfterCallbacks) 8112982Sgabeblack@google.com stopWork(); 8212982Sgabeblack@google.com} 8312982Sgabeblack@google.com 8412982Sgabeblack@google.comvoid 8512982Sgabeblack@google.comKernel::regStats() 8612982Sgabeblack@google.com{ 8713053Sgabeblack@google.com for (auto m: sc_gem5::allModules) 8813053Sgabeblack@google.com for (auto p: m->ports) 8913053Sgabeblack@google.com p->_gem5Finalize(); 9013053Sgabeblack@google.com 9112990Sgabeblack@google.com status(::sc_core::SC_END_OF_ELABORATION); 9213059Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 9312982Sgabeblack@google.com m->sc_mod()->end_of_elaboration(); 9413059Sgabeblack@google.com for (auto p: m->ports) 9513059Sgabeblack@google.com p->end_of_elaboration(); 9613059Sgabeblack@google.com for (auto e: m->exports) 9713059Sgabeblack@google.com e->end_of_elaboration(); 9813059Sgabeblack@google.com } 9913059Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 10013059Sgabeblack@google.com c->sc_chan()->end_of_elaboration(); 10112982Sgabeblack@google.com 10212990Sgabeblack@google.com if (stopAfterCallbacks) 10312982Sgabeblack@google.com stopWork(); 10412982Sgabeblack@google.com} 10512953Sgabeblack@google.com 10612953Sgabeblack@google.comvoid 10712953Sgabeblack@google.comKernel::startup() 10812837Sgabeblack@google.com{ 10912990Sgabeblack@google.com status(::sc_core::SC_START_OF_SIMULATION); 11013059Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 11112982Sgabeblack@google.com m->sc_mod()->start_of_simulation(); 11213059Sgabeblack@google.com for (auto p: m->ports) 11313059Sgabeblack@google.com p->start_of_simulation(); 11413059Sgabeblack@google.com for (auto e: m->exports) 11513059Sgabeblack@google.com e->start_of_simulation(); 11613059Sgabeblack@google.com } 11713059Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 11813059Sgabeblack@google.com c->sc_chan()->start_of_simulation(); 11912982Sgabeblack@google.com 12012990Sgabeblack@google.com startComplete = true; 12112982Sgabeblack@google.com 12212990Sgabeblack@google.com if (stopAfterCallbacks) 12312982Sgabeblack@google.com stopWork(); 12412982Sgabeblack@google.com 12512982Sgabeblack@google.com kernel->status(::sc_core::SC_RUNNING); 12612982Sgabeblack@google.com 12712953Sgabeblack@google.com schedule(t0Event, curTick()); 12812954Sgabeblack@google.com // Run update once before the event queue starts. 12912954Sgabeblack@google.com ::sc_gem5::scheduler.update(); 13012953Sgabeblack@google.com} 13112953Sgabeblack@google.com 13212953Sgabeblack@google.comvoid 13312982Sgabeblack@google.comKernel::stop() 13412982Sgabeblack@google.com{ 13512982Sgabeblack@google.com if (status() < ::sc_core::SC_RUNNING) 13612990Sgabeblack@google.com stopAfterCallbacks = true; 13712982Sgabeblack@google.com else 13812982Sgabeblack@google.com stopWork(); 13912982Sgabeblack@google.com} 14012982Sgabeblack@google.com 14112982Sgabeblack@google.comvoid 14212982Sgabeblack@google.comKernel::stopWork() 14312982Sgabeblack@google.com{ 14412990Sgabeblack@google.com status(::sc_core::SC_END_OF_SIMULATION); 14513059Sgabeblack@google.com for (auto m: sc_gem5::allModules) { 14612982Sgabeblack@google.com m->sc_mod()->end_of_simulation(); 14713059Sgabeblack@google.com for (auto p: m->ports) 14813059Sgabeblack@google.com p->end_of_simulation(); 14913059Sgabeblack@google.com for (auto e: m->exports) 15013059Sgabeblack@google.com e->end_of_simulation(); 15113059Sgabeblack@google.com } 15213059Sgabeblack@google.com for (auto c: sc_gem5::allChannels) 15313059Sgabeblack@google.com c->sc_chan()->end_of_simulation(); 15412982Sgabeblack@google.com 15512990Sgabeblack@google.com endComplete = true; 15612982Sgabeblack@google.com 15712990Sgabeblack@google.com status(::sc_core::SC_STOPPED); 15812982Sgabeblack@google.com 15912990Sgabeblack@google.com if (stopAfterCallbacks) 16012982Sgabeblack@google.com fatal("Simulation called sc_stop during elaboration.\n"); 16112982Sgabeblack@google.com} 16212982Sgabeblack@google.com 16312982Sgabeblack@google.comvoid 16412953Sgabeblack@google.comKernel::t0Handler() 16512953Sgabeblack@google.com{ 16613067Sgabeblack@google.com ::sc_gem5::scheduler.initPhase(); 16712982Sgabeblack@google.com 16812982Sgabeblack@google.com status(::sc_core::SC_RUNNING); 16912837Sgabeblack@google.com} 17012837Sgabeblack@google.com 17112982Sgabeblack@google.comKernel *kernel; 17212837Sgabeblack@google.com 17312982Sgabeblack@google.com} // namespace sc_gem5 17412982Sgabeblack@google.com 17512982Sgabeblack@google.comsc_gem5::Kernel * 17612837Sgabeblack@google.comSystemC_KernelParams::create() 17712837Sgabeblack@google.com{ 17812982Sgabeblack@google.com panic_if(sc_gem5::kernel, 17912982Sgabeblack@google.com "Only one systemc kernel object may be defined.\n"); 18012982Sgabeblack@google.com sc_gem5::kernel = new sc_gem5::Kernel(this); 18112982Sgabeblack@google.com return sc_gem5::kernel; 18212837Sgabeblack@google.com} 183