base_gic.cc revision 12974
19525SAndreas.Sandberg@ARM.com/* 212739Sandreas.sandberg@arm.com * Copyright (c) 2012, 2017-2018 ARM Limited 39525SAndreas.Sandberg@ARM.com * All rights reserved 49525SAndreas.Sandberg@ARM.com * 59525SAndreas.Sandberg@ARM.com * The license below extends only to copyright in the software and shall 69525SAndreas.Sandberg@ARM.com * not be construed as granting a license to any other intellectual 79525SAndreas.Sandberg@ARM.com * property including but not limited to intellectual property relating 89525SAndreas.Sandberg@ARM.com * to a hardware implementation of the functionality of the software 99525SAndreas.Sandberg@ARM.com * licensed hereunder. You may use the software subject to the license 109525SAndreas.Sandberg@ARM.com * terms below provided that you ensure that this notice is replicated 119525SAndreas.Sandberg@ARM.com * unmodified and in its entirety in all distributions of the software, 129525SAndreas.Sandberg@ARM.com * modified or unmodified, in source code or in binary form. 139525SAndreas.Sandberg@ARM.com * 149525SAndreas.Sandberg@ARM.com * Redistribution and use in source and binary forms, with or without 159525SAndreas.Sandberg@ARM.com * modification, are permitted provided that the following conditions are 169525SAndreas.Sandberg@ARM.com * met: redistributions of source code must retain the above copyright 179525SAndreas.Sandberg@ARM.com * notice, this list of conditions and the following disclaimer; 189525SAndreas.Sandberg@ARM.com * redistributions in binary form must reproduce the above copyright 199525SAndreas.Sandberg@ARM.com * notice, this list of conditions and the following disclaimer in the 209525SAndreas.Sandberg@ARM.com * documentation and/or other materials provided with the distribution; 219525SAndreas.Sandberg@ARM.com * neither the name of the copyright holders nor the names of its 229525SAndreas.Sandberg@ARM.com * contributors may be used to endorse or promote products derived from 239525SAndreas.Sandberg@ARM.com * this software without specific prior written permission. 249525SAndreas.Sandberg@ARM.com * 259525SAndreas.Sandberg@ARM.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 269525SAndreas.Sandberg@ARM.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 279525SAndreas.Sandberg@ARM.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 289525SAndreas.Sandberg@ARM.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 299525SAndreas.Sandberg@ARM.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 309525SAndreas.Sandberg@ARM.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 319525SAndreas.Sandberg@ARM.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 329525SAndreas.Sandberg@ARM.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 339525SAndreas.Sandberg@ARM.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 349525SAndreas.Sandberg@ARM.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 359525SAndreas.Sandberg@ARM.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 369525SAndreas.Sandberg@ARM.com * 379525SAndreas.Sandberg@ARM.com * Authors: Andreas Sandberg 389525SAndreas.Sandberg@ARM.com */ 399525SAndreas.Sandberg@ARM.com 409525SAndreas.Sandberg@ARM.com#include "dev/arm/base_gic.hh" 419525SAndreas.Sandberg@ARM.com 4212739Sandreas.sandberg@arm.com#include "cpu/thread_context.hh" 4310701SAndreas.Sandberg@ARM.com#include "dev/arm/realview.hh" 4412739Sandreas.sandberg@arm.com#include "params/ArmInterruptPin.hh" 4512739Sandreas.sandberg@arm.com#include "params/ArmPPI.hh" 4612739Sandreas.sandberg@arm.com#include "params/ArmSPI.hh" 479525SAndreas.Sandberg@ARM.com#include "params/BaseGic.hh" 489525SAndreas.Sandberg@ARM.com 499525SAndreas.Sandberg@ARM.comBaseGic::BaseGic(const Params *p) 509525SAndreas.Sandberg@ARM.com : PioDevice(p), 519525SAndreas.Sandberg@ARM.com platform(p->platform) 529525SAndreas.Sandberg@ARM.com{ 5310701SAndreas.Sandberg@ARM.com RealView *const rv(dynamic_cast<RealView*>(p->platform)); 5410701SAndreas.Sandberg@ARM.com // The platform keeps track of the GIC that is hooked up to the 5510701SAndreas.Sandberg@ARM.com // system. Due to quirks in gem5's configuration system, the 5610701SAndreas.Sandberg@ARM.com // platform can't take a GIC as parameter. Instead, we need to 5710701SAndreas.Sandberg@ARM.com // register with the platform when a new GIC is created. If we 5810701SAndreas.Sandberg@ARM.com // can't find a platform, something is seriously wrong. 5910701SAndreas.Sandberg@ARM.com fatal_if(!rv, "GIC model can't register with platform code"); 6010701SAndreas.Sandberg@ARM.com rv->setGic(this); 619525SAndreas.Sandberg@ARM.com} 629525SAndreas.Sandberg@ARM.com 639525SAndreas.Sandberg@ARM.comBaseGic::~BaseGic() 649525SAndreas.Sandberg@ARM.com{ 659525SAndreas.Sandberg@ARM.com} 669525SAndreas.Sandberg@ARM.com 679525SAndreas.Sandberg@ARM.comconst BaseGic::Params * 689525SAndreas.Sandberg@ARM.comBaseGic::params() const 699525SAndreas.Sandberg@ARM.com{ 709525SAndreas.Sandberg@ARM.com return dynamic_cast<const Params *>(_params); 719525SAndreas.Sandberg@ARM.com} 7212739Sandreas.sandberg@arm.com 7312974Sgiacomo.travaglini@arm.comArmInterruptPinGen::ArmInterruptPinGen(const ArmInterruptPinParams *p) 7412974Sgiacomo.travaglini@arm.com : SimObject(p) 7512974Sgiacomo.travaglini@arm.com{ 7612974Sgiacomo.travaglini@arm.com} 7712739Sandreas.sandberg@arm.com 7812974Sgiacomo.travaglini@arm.comArmSPIGen::ArmSPIGen(const ArmSPIParams *p) 7912974Sgiacomo.travaglini@arm.com : ArmInterruptPinGen(p), pin(new ArmSPI(p->platform, p->num)) 8012974Sgiacomo.travaglini@arm.com{ 8112974Sgiacomo.travaglini@arm.com} 8212974Sgiacomo.travaglini@arm.com 8312974Sgiacomo.travaglini@arm.comArmInterruptPin* 8412974Sgiacomo.travaglini@arm.comArmSPIGen::get(ThreadContext* tc) 8512974Sgiacomo.travaglini@arm.com{ 8612974Sgiacomo.travaglini@arm.com return pin; 8712974Sgiacomo.travaglini@arm.com} 8812974Sgiacomo.travaglini@arm.com 8912974Sgiacomo.travaglini@arm.comArmPPIGen::ArmPPIGen(const ArmPPIParams *p) 9012974Sgiacomo.travaglini@arm.com : ArmInterruptPinGen(p) 9112974Sgiacomo.travaglini@arm.com{ 9212974Sgiacomo.travaglini@arm.com} 9312974Sgiacomo.travaglini@arm.com 9412974Sgiacomo.travaglini@arm.comArmInterruptPin* 9512974Sgiacomo.travaglini@arm.comArmPPIGen::get(ThreadContext* tc) 9612974Sgiacomo.travaglini@arm.com{ 9712974Sgiacomo.travaglini@arm.com panic_if(!tc, "Invalid Thread Context\n"); 9812974Sgiacomo.travaglini@arm.com ContextID cid = tc->contextId(); 9912974Sgiacomo.travaglini@arm.com 10012974Sgiacomo.travaglini@arm.com auto pin_it = pins.find(cid); 10112974Sgiacomo.travaglini@arm.com 10212974Sgiacomo.travaglini@arm.com if (pin_it != pins.end()) { 10312974Sgiacomo.travaglini@arm.com // PPI Pin Already generated 10412974Sgiacomo.travaglini@arm.com return pin_it->second; 10512974Sgiacomo.travaglini@arm.com } else { 10612974Sgiacomo.travaglini@arm.com // Generate PPI Pin 10712974Sgiacomo.travaglini@arm.com auto p = static_cast<const ArmPPIParams *>(_params); 10812974Sgiacomo.travaglini@arm.com ArmPPI *pin = new ArmPPI(p->platform, tc, p->num); 10912974Sgiacomo.travaglini@arm.com 11012974Sgiacomo.travaglini@arm.com pins.insert({cid, pin}); 11112974Sgiacomo.travaglini@arm.com 11212974Sgiacomo.travaglini@arm.com return pin; 11312974Sgiacomo.travaglini@arm.com } 11412974Sgiacomo.travaglini@arm.com} 11512974Sgiacomo.travaglini@arm.com 11612974Sgiacomo.travaglini@arm.comArmInterruptPin::ArmInterruptPin( 11712974Sgiacomo.travaglini@arm.com Platform *_platform, ThreadContext *tc, uint32_t int_num) 11812974Sgiacomo.travaglini@arm.com : threadContext(tc), platform(dynamic_cast<RealView*>(_platform)), 11912974Sgiacomo.travaglini@arm.com intNum(int_num) 12012739Sandreas.sandberg@arm.com{ 12112739Sandreas.sandberg@arm.com fatal_if(!platform, "Interrupt not connected to a RealView platform"); 12212739Sandreas.sandberg@arm.com} 12312739Sandreas.sandberg@arm.com 12412739Sandreas.sandberg@arm.comvoid 12512739Sandreas.sandberg@arm.comArmInterruptPin::setThreadContext(ThreadContext *tc) 12612739Sandreas.sandberg@arm.com{ 12712739Sandreas.sandberg@arm.com panic_if(threadContext, 12812739Sandreas.sandberg@arm.com "InterruptLine::setThreadContext called twice\n"); 12912739Sandreas.sandberg@arm.com 13012739Sandreas.sandberg@arm.com threadContext = tc; 13112739Sandreas.sandberg@arm.com} 13212739Sandreas.sandberg@arm.com 13312739Sandreas.sandberg@arm.comContextID 13412739Sandreas.sandberg@arm.comArmInterruptPin::targetContext() const 13512739Sandreas.sandberg@arm.com{ 13612739Sandreas.sandberg@arm.com panic_if(!threadContext, "Per-context interrupt triggered without a " \ 13712739Sandreas.sandberg@arm.com "call to InterruptLine::setThreadContext.\n"); 13812739Sandreas.sandberg@arm.com return threadContext->contextId(); 13912739Sandreas.sandberg@arm.com} 14012739Sandreas.sandberg@arm.com 14112974Sgiacomo.travaglini@arm.comArmSPI::ArmSPI( 14212974Sgiacomo.travaglini@arm.com Platform *_platform, uint32_t int_num) 14312974Sgiacomo.travaglini@arm.com : ArmInterruptPin(_platform, nullptr, int_num) 14412739Sandreas.sandberg@arm.com{ 14512739Sandreas.sandberg@arm.com} 14612739Sandreas.sandberg@arm.com 14712739Sandreas.sandberg@arm.comvoid 14812739Sandreas.sandberg@arm.comArmSPI::raise() 14912739Sandreas.sandberg@arm.com{ 15012739Sandreas.sandberg@arm.com platform->gic->sendInt(intNum); 15112739Sandreas.sandberg@arm.com} 15212739Sandreas.sandberg@arm.com 15312739Sandreas.sandberg@arm.comvoid 15412739Sandreas.sandberg@arm.comArmSPI::clear() 15512739Sandreas.sandberg@arm.com{ 15612739Sandreas.sandberg@arm.com platform->gic->clearInt(intNum); 15712739Sandreas.sandberg@arm.com} 15812739Sandreas.sandberg@arm.com 15912974Sgiacomo.travaglini@arm.comArmPPI::ArmPPI( 16012974Sgiacomo.travaglini@arm.com Platform *_platform, ThreadContext *tc, uint32_t int_num) 16112974Sgiacomo.travaglini@arm.com : ArmInterruptPin(_platform, tc, int_num) 16212739Sandreas.sandberg@arm.com{ 16312739Sandreas.sandberg@arm.com} 16412739Sandreas.sandberg@arm.com 16512739Sandreas.sandberg@arm.comvoid 16612739Sandreas.sandberg@arm.comArmPPI::raise() 16712739Sandreas.sandberg@arm.com{ 16812739Sandreas.sandberg@arm.com platform->gic->sendPPInt(intNum, targetContext()); 16912739Sandreas.sandberg@arm.com} 17012739Sandreas.sandberg@arm.com 17112739Sandreas.sandberg@arm.comvoid 17212739Sandreas.sandberg@arm.comArmPPI::clear() 17312739Sandreas.sandberg@arm.com{ 17412739Sandreas.sandberg@arm.com platform->gic->clearPPInt(intNum, targetContext()); 17512739Sandreas.sandberg@arm.com} 17612739Sandreas.sandberg@arm.com 17712974Sgiacomo.travaglini@arm.comArmSPIGen * 17812739Sandreas.sandberg@arm.comArmSPIParams::create() 17912739Sandreas.sandberg@arm.com{ 18012974Sgiacomo.travaglini@arm.com return new ArmSPIGen(this); 18112739Sandreas.sandberg@arm.com} 18212739Sandreas.sandberg@arm.com 18312974Sgiacomo.travaglini@arm.comArmPPIGen * 18412739Sandreas.sandberg@arm.comArmPPIParams::create() 18512739Sandreas.sandberg@arm.com{ 18612974Sgiacomo.travaglini@arm.com return new ArmPPIGen(this); 18712739Sandreas.sandberg@arm.com} 188