gic_v3.cc revision 13877
113531Sjairo.balart@metempsy.com/* 213531Sjairo.balart@metempsy.com * Copyright (c) 2018 Metempsy Technology Consulting 313531Sjairo.balart@metempsy.com * All rights reserved. 413531Sjairo.balart@metempsy.com * 513531Sjairo.balart@metempsy.com * Redistribution and use in source and binary forms, with or without 613531Sjairo.balart@metempsy.com * modification, are permitted provided that the following conditions are 713531Sjairo.balart@metempsy.com * met: redistributions of source code must retain the above copyright 813531Sjairo.balart@metempsy.com * notice, this list of conditions and the following disclaimer; 913531Sjairo.balart@metempsy.com * redistributions in binary form must reproduce the above copyright 1013531Sjairo.balart@metempsy.com * notice, this list of conditions and the following disclaimer in the 1113531Sjairo.balart@metempsy.com * documentation and/or other materials provided with the distribution; 1213531Sjairo.balart@metempsy.com * neither the name of the copyright holders nor the names of its 1313531Sjairo.balart@metempsy.com * contributors may be used to endorse or promote products derived from 1413531Sjairo.balart@metempsy.com * this software without specific prior written permission. 1513531Sjairo.balart@metempsy.com * 1613531Sjairo.balart@metempsy.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1713531Sjairo.balart@metempsy.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1813531Sjairo.balart@metempsy.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1913531Sjairo.balart@metempsy.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2013531Sjairo.balart@metempsy.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2113531Sjairo.balart@metempsy.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2213531Sjairo.balart@metempsy.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2313531Sjairo.balart@metempsy.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2413531Sjairo.balart@metempsy.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2513531Sjairo.balart@metempsy.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2613531Sjairo.balart@metempsy.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2713531Sjairo.balart@metempsy.com * 2813531Sjairo.balart@metempsy.com * Authors: Jairo Balart 2913531Sjairo.balart@metempsy.com */ 3013531Sjairo.balart@metempsy.com 3113531Sjairo.balart@metempsy.com#include "dev/arm/gic_v3.hh" 3213531Sjairo.balart@metempsy.com 3313531Sjairo.balart@metempsy.com#include "cpu/intr_control.hh" 3413531Sjairo.balart@metempsy.com#include "debug/GIC.hh" 3513531Sjairo.balart@metempsy.com#include "debug/Interrupt.hh" 3613531Sjairo.balart@metempsy.com#include "dev/arm/gic_v3_cpu_interface.hh" 3713531Sjairo.balart@metempsy.com#include "dev/arm/gic_v3_distributor.hh" 3813531Sjairo.balart@metempsy.com#include "dev/arm/gic_v3_redistributor.hh" 3913531Sjairo.balart@metempsy.com#include "dev/platform.hh" 4013531Sjairo.balart@metempsy.com#include "mem/packet.hh" 4113531Sjairo.balart@metempsy.com#include "mem/packet_access.hh" 4213531Sjairo.balart@metempsy.com 4313531Sjairo.balart@metempsy.comGicv3::Gicv3(const Params * p) 4413531Sjairo.balart@metempsy.com : BaseGic(p) 4513531Sjairo.balart@metempsy.com{ 4613531Sjairo.balart@metempsy.com} 4713531Sjairo.balart@metempsy.com 4813531Sjairo.balart@metempsy.comvoid 4913531Sjairo.balart@metempsy.comGicv3::init() 5013531Sjairo.balart@metempsy.com{ 5113531Sjairo.balart@metempsy.com distRange = RangeSize(params()->dist_addr, 5213531Sjairo.balart@metempsy.com Gicv3Distributor::ADDR_RANGE_SIZE - 1); 5313531Sjairo.balart@metempsy.com redistRange = RangeSize(params()->redist_addr, 5413531Sjairo.balart@metempsy.com Gicv3Redistributor::ADDR_RANGE_SIZE * sys->numContexts() - 1); 5513531Sjairo.balart@metempsy.com addrRanges = {distRange, redistRange}; 5613531Sjairo.balart@metempsy.com BaseGic::init(); 5713531Sjairo.balart@metempsy.com distributor = new Gicv3Distributor(this, params()->it_lines); 5813531Sjairo.balart@metempsy.com redistributors.resize(sys->numContexts(), nullptr); 5913531Sjairo.balart@metempsy.com cpuInterfaces.resize(sys->numContexts(), nullptr); 6013531Sjairo.balart@metempsy.com 6113877Sgiacomo.travaglini@arm.com panic_if(sys->numContexts() > params()->cpu_max, 6213877Sgiacomo.travaglini@arm.com "Exceeding maximum number of PEs supported by GICv3: " 6313877Sgiacomo.travaglini@arm.com "using %u while maximum is %u\n", sys->numContexts(), 6413877Sgiacomo.travaglini@arm.com params()->cpu_max); 6513877Sgiacomo.travaglini@arm.com 6613531Sjairo.balart@metempsy.com for (int i = 0; i < sys->numContexts(); i++) { 6713531Sjairo.balart@metempsy.com redistributors[i] = new Gicv3Redistributor(this, i); 6813531Sjairo.balart@metempsy.com cpuInterfaces[i] = new Gicv3CPUInterface(this, i); 6913531Sjairo.balart@metempsy.com } 7013531Sjairo.balart@metempsy.com 7113531Sjairo.balart@metempsy.com distributor->init(); 7213531Sjairo.balart@metempsy.com 7313531Sjairo.balart@metempsy.com for (int i = 0; i < sys->numContexts(); i++) { 7413531Sjairo.balart@metempsy.com redistributors[i]->init(); 7513531Sjairo.balart@metempsy.com cpuInterfaces[i]->init(); 7613531Sjairo.balart@metempsy.com } 7713531Sjairo.balart@metempsy.com} 7813531Sjairo.balart@metempsy.com 7913531Sjairo.balart@metempsy.comvoid 8013531Sjairo.balart@metempsy.comGicv3::initState() 8113531Sjairo.balart@metempsy.com{ 8213531Sjairo.balart@metempsy.com distributor->initState(); 8313531Sjairo.balart@metempsy.com 8413531Sjairo.balart@metempsy.com for (int i = 0; i < sys->numContexts(); i++) { 8513531Sjairo.balart@metempsy.com redistributors[i]->initState(); 8613531Sjairo.balart@metempsy.com cpuInterfaces[i]->initState(); 8713531Sjairo.balart@metempsy.com } 8813531Sjairo.balart@metempsy.com} 8913531Sjairo.balart@metempsy.com 9013531Sjairo.balart@metempsy.comTick 9113531Sjairo.balart@metempsy.comGicv3::read(PacketPtr pkt) 9213531Sjairo.balart@metempsy.com{ 9313531Sjairo.balart@metempsy.com const Addr addr = pkt->getAddr(); 9413531Sjairo.balart@metempsy.com const size_t size = pkt->getSize(); 9513531Sjairo.balart@metempsy.com bool is_secure_access = pkt->isSecure(); 9613531Sjairo.balart@metempsy.com uint64_t resp = 0; 9713531Sjairo.balart@metempsy.com Tick delay = 0; 9813531Sjairo.balart@metempsy.com 9913531Sjairo.balart@metempsy.com if (distRange.contains(addr)) { 10013531Sjairo.balart@metempsy.com const Addr daddr = addr - distRange.start(); 10113531Sjairo.balart@metempsy.com panic_if(!distributor, "Distributor is null!"); 10213531Sjairo.balart@metempsy.com resp = distributor->read(daddr, size, is_secure_access); 10313531Sjairo.balart@metempsy.com delay = params()->dist_pio_delay; 10413531Sjairo.balart@metempsy.com DPRINTF(GIC, "Gicv3::read(): (distributor) context_id %d register %#x " 10513531Sjairo.balart@metempsy.com "size %d is_secure_access %d (value %#x)\n", 10613623Sanouk.vanlaer@arm.com pkt->req->contextId(), daddr, size, is_secure_access, resp); 10713531Sjairo.balart@metempsy.com } else if (redistRange.contains(addr)) { 10813531Sjairo.balart@metempsy.com Addr daddr = addr - redistRange.start(); 10913531Sjairo.balart@metempsy.com uint32_t redistributor_id = 11013531Sjairo.balart@metempsy.com daddr / Gicv3Redistributor::ADDR_RANGE_SIZE; 11113531Sjairo.balart@metempsy.com daddr = daddr % Gicv3Redistributor::ADDR_RANGE_SIZE; 11213531Sjairo.balart@metempsy.com panic_if(redistributor_id >= redistributors.size(), 11313531Sjairo.balart@metempsy.com "Invalid redistributor_id!"); 11413531Sjairo.balart@metempsy.com panic_if(!redistributors[redistributor_id], "Redistributor is null!"); 11513531Sjairo.balart@metempsy.com resp = redistributors[redistributor_id]->read(daddr, size, 11613756Sjairo.balart@metempsy.com is_secure_access); 11713531Sjairo.balart@metempsy.com delay = params()->redist_pio_delay; 11813531Sjairo.balart@metempsy.com DPRINTF(GIC, "Gicv3::read(): (redistributor %d) context_id %d " 11913531Sjairo.balart@metempsy.com "register %#x size %d is_secure_access %d (value %#x)\n", 12013623Sanouk.vanlaer@arm.com redistributor_id, pkt->req->contextId(), daddr, size, 12113623Sanouk.vanlaer@arm.com is_secure_access, resp); 12213531Sjairo.balart@metempsy.com } else { 12313531Sjairo.balart@metempsy.com panic("Gicv3::read(): unknown address %#x\n", addr); 12413531Sjairo.balart@metempsy.com } 12513531Sjairo.balart@metempsy.com 12613531Sjairo.balart@metempsy.com pkt->setUintX(resp, LittleEndianByteOrder); 12713531Sjairo.balart@metempsy.com pkt->makeAtomicResponse(); 12813531Sjairo.balart@metempsy.com return delay; 12913531Sjairo.balart@metempsy.com} 13013531Sjairo.balart@metempsy.com 13113531Sjairo.balart@metempsy.comTick 13213531Sjairo.balart@metempsy.comGicv3::write(PacketPtr pkt) 13313531Sjairo.balart@metempsy.com{ 13413531Sjairo.balart@metempsy.com const size_t size = pkt->getSize(); 13513531Sjairo.balart@metempsy.com uint64_t data = pkt->getUintX(LittleEndianByteOrder); 13613531Sjairo.balart@metempsy.com const Addr addr = pkt->getAddr(); 13713531Sjairo.balart@metempsy.com bool is_secure_access = pkt->isSecure(); 13813531Sjairo.balart@metempsy.com Tick delay = 0; 13913531Sjairo.balart@metempsy.com 14013531Sjairo.balart@metempsy.com if (distRange.contains(addr)) { 14113531Sjairo.balart@metempsy.com const Addr daddr = addr - distRange.start(); 14213531Sjairo.balart@metempsy.com panic_if(!distributor, "Distributor is null!"); 14313531Sjairo.balart@metempsy.com DPRINTF(GIC, "Gicv3::write(): (distributor) context_id %d " 14413531Sjairo.balart@metempsy.com "register %#x size %d is_secure_access %d value %#x\n", 14513623Sanouk.vanlaer@arm.com pkt->req->contextId(), daddr, size, is_secure_access, data); 14613531Sjairo.balart@metempsy.com distributor->write(daddr, data, size, is_secure_access); 14713531Sjairo.balart@metempsy.com delay = params()->dist_pio_delay; 14813531Sjairo.balart@metempsy.com } else if (redistRange.contains(addr)) { 14913531Sjairo.balart@metempsy.com Addr daddr = addr - redistRange.start(); 15013531Sjairo.balart@metempsy.com uint32_t redistributor_id = 15113531Sjairo.balart@metempsy.com daddr / Gicv3Redistributor::ADDR_RANGE_SIZE; 15213531Sjairo.balart@metempsy.com daddr = daddr % Gicv3Redistributor::ADDR_RANGE_SIZE; 15313531Sjairo.balart@metempsy.com panic_if(redistributor_id >= redistributors.size(), 15413531Sjairo.balart@metempsy.com "Invalid redistributor_id!"); 15513531Sjairo.balart@metempsy.com panic_if(!redistributors[redistributor_id], "Redistributor is null!"); 15613531Sjairo.balart@metempsy.com DPRINTF(GIC, "Gicv3::write(): (redistributor %d) context_id %d " 15713531Sjairo.balart@metempsy.com "register %#x size %d is_secure_access %d value %#x\n", 15813623Sanouk.vanlaer@arm.com redistributor_id, pkt->req->contextId(), daddr, size, 15913623Sanouk.vanlaer@arm.com is_secure_access, data); 16013531Sjairo.balart@metempsy.com redistributors[redistributor_id]->write(daddr, data, size, 16113531Sjairo.balart@metempsy.com is_secure_access); 16213531Sjairo.balart@metempsy.com delay = params()->redist_pio_delay; 16313531Sjairo.balart@metempsy.com } else { 16413531Sjairo.balart@metempsy.com panic("Gicv3::write(): unknown address %#x\n", addr); 16513531Sjairo.balart@metempsy.com } 16613531Sjairo.balart@metempsy.com 16713531Sjairo.balart@metempsy.com pkt->makeAtomicResponse(); 16813531Sjairo.balart@metempsy.com return delay; 16913531Sjairo.balart@metempsy.com} 17013531Sjairo.balart@metempsy.com 17113531Sjairo.balart@metempsy.comvoid 17213531Sjairo.balart@metempsy.comGicv3::sendInt(uint32_t int_id) 17313531Sjairo.balart@metempsy.com{ 17413531Sjairo.balart@metempsy.com panic_if(int_id < Gicv3::SGI_MAX + Gicv3::PPI_MAX, "Invalid SPI!"); 17513531Sjairo.balart@metempsy.com panic_if(int_id >= Gicv3::INTID_SECURE, "Invalid SPI!"); 17613531Sjairo.balart@metempsy.com DPRINTF(Interrupt, "Gicv3::sendInt(): received SPI %d\n", int_id); 17713531Sjairo.balart@metempsy.com distributor->sendInt(int_id); 17813531Sjairo.balart@metempsy.com} 17913531Sjairo.balart@metempsy.com 18013531Sjairo.balart@metempsy.comvoid 18113531Sjairo.balart@metempsy.comGicv3::clearInt(uint32_t number) 18213531Sjairo.balart@metempsy.com{ 18313756Sjairo.balart@metempsy.com distributor->deassertSPI(number); 18413531Sjairo.balart@metempsy.com} 18513531Sjairo.balart@metempsy.com 18613531Sjairo.balart@metempsy.comvoid 18713531Sjairo.balart@metempsy.comGicv3::sendPPInt(uint32_t int_id, uint32_t cpu) 18813531Sjairo.balart@metempsy.com{ 18913531Sjairo.balart@metempsy.com panic_if(cpu >= redistributors.size(), "Invalid cpuID sending PPI!"); 19013531Sjairo.balart@metempsy.com panic_if(int_id < Gicv3::SGI_MAX, "Invalid PPI!"); 19113531Sjairo.balart@metempsy.com panic_if(int_id >= Gicv3::SGI_MAX + Gicv3::PPI_MAX, "Invalid PPI!"); 19213531Sjairo.balart@metempsy.com DPRINTF(Interrupt, "Gicv3::sendPPInt(): received PPI %d cpuTarget %#x\n", 19313531Sjairo.balart@metempsy.com int_id, cpu); 19413531Sjairo.balart@metempsy.com redistributors[cpu]->sendPPInt(int_id); 19513531Sjairo.balart@metempsy.com} 19613531Sjairo.balart@metempsy.com 19713531Sjairo.balart@metempsy.comvoid 19813531Sjairo.balart@metempsy.comGicv3::clearPPInt(uint32_t num, uint32_t cpu) 19913531Sjairo.balart@metempsy.com{ 20013531Sjairo.balart@metempsy.com} 20113531Sjairo.balart@metempsy.com 20213531Sjairo.balart@metempsy.comvoid 20313531Sjairo.balart@metempsy.comGicv3::postInt(uint32_t cpu, ArmISA::InterruptTypes int_type) 20413531Sjairo.balart@metempsy.com{ 20513756Sjairo.balart@metempsy.com platform->intrctrl->post(cpu, int_type, 0); 20613531Sjairo.balart@metempsy.com} 20713531Sjairo.balart@metempsy.com 20813531Sjairo.balart@metempsy.comvoid 20913531Sjairo.balart@metempsy.comGicv3::deassertInt(uint32_t cpu, ArmISA::InterruptTypes int_type) 21013531Sjairo.balart@metempsy.com{ 21113531Sjairo.balart@metempsy.com platform->intrctrl->clear(cpu, int_type, 0); 21213531Sjairo.balart@metempsy.com} 21313531Sjairo.balart@metempsy.com 21413531Sjairo.balart@metempsy.comGicv3Redistributor * 21513756Sjairo.balart@metempsy.comGicv3::getRedistributorByAffinity(uint32_t affinity) const 21613531Sjairo.balart@metempsy.com{ 21713531Sjairo.balart@metempsy.com for (auto & redistributor : redistributors) { 21813531Sjairo.balart@metempsy.com if (redistributor->getAffinity() == affinity) { 21913531Sjairo.balart@metempsy.com return redistributor; 22013531Sjairo.balart@metempsy.com } 22113531Sjairo.balart@metempsy.com } 22213531Sjairo.balart@metempsy.com 22313531Sjairo.balart@metempsy.com return nullptr; 22413531Sjairo.balart@metempsy.com} 22513531Sjairo.balart@metempsy.com 22613531Sjairo.balart@metempsy.comvoid 22713531Sjairo.balart@metempsy.comGicv3::serialize(CheckpointOut & cp) const 22813531Sjairo.balart@metempsy.com{ 22913531Sjairo.balart@metempsy.com distributor->serializeSection(cp, "distributor"); 23013531Sjairo.balart@metempsy.com 23113531Sjairo.balart@metempsy.com for (uint32_t redistributor_id = 0; 23213756Sjairo.balart@metempsy.com redistributor_id < redistributors.size(); redistributor_id++) 23313531Sjairo.balart@metempsy.com redistributors[redistributor_id]->serializeSection(cp, 23413531Sjairo.balart@metempsy.com csprintf("redistributors.%i", redistributor_id)); 23513531Sjairo.balart@metempsy.com 23613531Sjairo.balart@metempsy.com for (uint32_t cpu_interface_id = 0; 23713756Sjairo.balart@metempsy.com cpu_interface_id < cpuInterfaces.size(); cpu_interface_id++) 23813531Sjairo.balart@metempsy.com cpuInterfaces[cpu_interface_id]->serializeSection(cp, 23913531Sjairo.balart@metempsy.com csprintf("cpuInterface.%i", cpu_interface_id)); 24013531Sjairo.balart@metempsy.com} 24113531Sjairo.balart@metempsy.com 24213531Sjairo.balart@metempsy.comvoid 24313531Sjairo.balart@metempsy.comGicv3::unserialize(CheckpointIn & cp) 24413531Sjairo.balart@metempsy.com{ 24513531Sjairo.balart@metempsy.com getSystem()->setGIC(this); 24613531Sjairo.balart@metempsy.com 24713531Sjairo.balart@metempsy.com distributor->unserializeSection(cp, "distributor"); 24813531Sjairo.balart@metempsy.com 24913531Sjairo.balart@metempsy.com for (uint32_t redistributor_id = 0; 25013756Sjairo.balart@metempsy.com redistributor_id < redistributors.size(); redistributor_id++) 25113531Sjairo.balart@metempsy.com redistributors[redistributor_id]->unserializeSection(cp, 25213531Sjairo.balart@metempsy.com csprintf("redistributors.%i", redistributor_id)); 25313531Sjairo.balart@metempsy.com 25413531Sjairo.balart@metempsy.com for (uint32_t cpu_interface_id = 0; 25513756Sjairo.balart@metempsy.com cpu_interface_id < cpuInterfaces.size(); cpu_interface_id++) 25613531Sjairo.balart@metempsy.com cpuInterfaces[cpu_interface_id]->unserializeSection(cp, 25713531Sjairo.balart@metempsy.com csprintf("cpuInterface.%i", cpu_interface_id)); 25813531Sjairo.balart@metempsy.com} 25913531Sjairo.balart@metempsy.com 26013531Sjairo.balart@metempsy.comGicv3 * 26113531Sjairo.balart@metempsy.comGicv3Params::create() 26213531Sjairo.balart@metempsy.com{ 26313531Sjairo.balart@metempsy.com return new Gicv3(this); 26413531Sjairo.balart@metempsy.com} 265