RubyPort.cc revision 10961
16876Ssteve.reinhardt@amd.com/* 210089Sandreas.hansson@arm.com * Copyright (c) 2012-2013 ARM Limited 38922Swilliam.wang@arm.com * All rights reserved. 48922Swilliam.wang@arm.com * 58922Swilliam.wang@arm.com * The license below extends only to copyright in the software and shall 68922Swilliam.wang@arm.com * not be construed as granting a license to any other intellectual 78922Swilliam.wang@arm.com * property including but not limited to intellectual property relating 88922Swilliam.wang@arm.com * to a hardware implementation of the functionality of the software 98922Swilliam.wang@arm.com * licensed hereunder. You may use the software subject to the license 108922Swilliam.wang@arm.com * terms below provided that you ensure that this notice is replicated 118922Swilliam.wang@arm.com * unmodified and in its entirety in all distributions of the software, 128922Swilliam.wang@arm.com * modified or unmodified, in source code or in binary form. 138922Swilliam.wang@arm.com * 146876Ssteve.reinhardt@amd.com * Copyright (c) 2009 Advanced Micro Devices, Inc. 158717Snilay@cs.wisc.edu * Copyright (c) 2011 Mark D. Hill and David A. Wood 166876Ssteve.reinhardt@amd.com * All rights reserved. 176876Ssteve.reinhardt@amd.com * 186876Ssteve.reinhardt@amd.com * Redistribution and use in source and binary forms, with or without 196876Ssteve.reinhardt@amd.com * modification, are permitted provided that the following conditions are 206876Ssteve.reinhardt@amd.com * met: redistributions of source code must retain the above copyright 216876Ssteve.reinhardt@amd.com * notice, this list of conditions and the following disclaimer; 226876Ssteve.reinhardt@amd.com * redistributions in binary form must reproduce the above copyright 236876Ssteve.reinhardt@amd.com * notice, this list of conditions and the following disclaimer in the 246876Ssteve.reinhardt@amd.com * documentation and/or other materials provided with the distribution; 256876Ssteve.reinhardt@amd.com * neither the name of the copyright holders nor the names of its 266876Ssteve.reinhardt@amd.com * contributors may be used to endorse or promote products derived from 276876Ssteve.reinhardt@amd.com * this software without specific prior written permission. 286876Ssteve.reinhardt@amd.com * 296876Ssteve.reinhardt@amd.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 306876Ssteve.reinhardt@amd.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 316876Ssteve.reinhardt@amd.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 326876Ssteve.reinhardt@amd.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 336876Ssteve.reinhardt@amd.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 346876Ssteve.reinhardt@amd.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 356876Ssteve.reinhardt@amd.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 366876Ssteve.reinhardt@amd.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 376876Ssteve.reinhardt@amd.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 386876Ssteve.reinhardt@amd.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 396876Ssteve.reinhardt@amd.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 406876Ssteve.reinhardt@amd.com */ 416876Ssteve.reinhardt@amd.com 427632SBrad.Beckmann@amd.com#include "cpu/testers/rubytest/RubyTester.hh" 438688Snilay@cs.wisc.edu#include "debug/Config.hh" 449152Satgutier@umich.edu#include "debug/Drain.hh" 458232Snate@binkert.org#include "debug/Ruby.hh" 468436SBrad.Beckmann@amd.com#include "mem/protocol/AccessPermission.hh" 477039Snate@binkert.org#include "mem/ruby/slicc_interface/AbstractController.hh" 486285Snate@binkert.org#include "mem/ruby/system/RubyPort.hh" 4910525Snilay@cs.wisc.edu#include "mem/simple_mem.hh" 5010117Snilay@cs.wisc.edu#include "sim/full_system.hh" 518923Sandreas.hansson@arm.com#include "sim/system.hh" 526285Snate@binkert.org 536876Ssteve.reinhardt@amd.comRubyPort::RubyPort(const Params *p) 5410919Sbrandon.potter@amd.com : MemObject(p), m_ruby_system(p->ruby_system), m_version(p->version), 5510919Sbrandon.potter@amd.com m_controller(NULL), m_mandatory_q_ptr(NULL), 5610919Sbrandon.potter@amd.com m_usingRubyTester(p->using_ruby_tester), system(p->system), 5710090Snilay@cs.wisc.edu pioMasterPort(csprintf("%s.pio-master-port", name()), this), 5810090Snilay@cs.wisc.edu pioSlavePort(csprintf("%s.pio-slave-port", name()), this), 5910090Snilay@cs.wisc.edu memMasterPort(csprintf("%s.mem-master-port", name()), this), 6010090Snilay@cs.wisc.edu memSlavePort(csprintf("%s-mem-slave-port", name()), this, 6110919Sbrandon.potter@amd.com p->ruby_system->getAccessBackingStore(), -1), 6210913Sandreas.sandberg@arm.com gotAddrRanges(p->port_master_connection_count) 636876Ssteve.reinhardt@amd.com{ 646876Ssteve.reinhardt@amd.com assert(m_version != -1); 656876Ssteve.reinhardt@amd.com 668922Swilliam.wang@arm.com // create the slave ports based on the number of connected ports 678922Swilliam.wang@arm.com for (size_t i = 0; i < p->port_slave_connection_count; ++i) { 6810090Snilay@cs.wisc.edu slave_ports.push_back(new MemSlavePort(csprintf("%s.slave%d", name(), 6910919Sbrandon.potter@amd.com i), this, p->ruby_system->getAccessBackingStore(), i)); 708922Swilliam.wang@arm.com } 717039Snate@binkert.org 728922Swilliam.wang@arm.com // create the master ports based on the number of connected ports 738922Swilliam.wang@arm.com for (size_t i = 0; i < p->port_master_connection_count; ++i) { 7410090Snilay@cs.wisc.edu master_ports.push_back(new PioMasterPort(csprintf("%s.master%d", 7510090Snilay@cs.wisc.edu name(), i), this)); 768922Swilliam.wang@arm.com } 776876Ssteve.reinhardt@amd.com} 786876Ssteve.reinhardt@amd.com 797039Snate@binkert.orgvoid 807039Snate@binkert.orgRubyPort::init() 816882SBrad.Beckmann@amd.com{ 826882SBrad.Beckmann@amd.com assert(m_controller != NULL); 836882SBrad.Beckmann@amd.com m_mandatory_q_ptr = m_controller->getMandatoryQueue(); 849508Snilay@cs.wisc.edu m_mandatory_q_ptr->setSender(this); 856882SBrad.Beckmann@amd.com} 866882SBrad.Beckmann@amd.com 879294Sandreas.hansson@arm.comBaseMasterPort & 889294Sandreas.hansson@arm.comRubyPort::getMasterPort(const std::string &if_name, PortID idx) 896876Ssteve.reinhardt@amd.com{ 9010090Snilay@cs.wisc.edu if (if_name == "mem_master_port") { 9110090Snilay@cs.wisc.edu return memMasterPort; 9210090Snilay@cs.wisc.edu } 9310090Snilay@cs.wisc.edu 9410090Snilay@cs.wisc.edu if (if_name == "pio_master_port") { 9510090Snilay@cs.wisc.edu return pioMasterPort; 968922Swilliam.wang@arm.com } 978922Swilliam.wang@arm.com 988839Sandreas.hansson@arm.com // used by the x86 CPUs to connect the interrupt PIO and interrupt slave 998839Sandreas.hansson@arm.com // port 1008922Swilliam.wang@arm.com if (if_name != "master") { 1018922Swilliam.wang@arm.com // pass it along to our super class 1028922Swilliam.wang@arm.com return MemObject::getMasterPort(if_name, idx); 1038922Swilliam.wang@arm.com } else { 1049294Sandreas.hansson@arm.com if (idx >= static_cast<PortID>(master_ports.size())) { 1058922Swilliam.wang@arm.com panic("RubyPort::getMasterPort: unknown index %d\n", idx); 1068922Swilliam.wang@arm.com } 1078839Sandreas.hansson@arm.com 1088922Swilliam.wang@arm.com return *master_ports[idx]; 1098839Sandreas.hansson@arm.com } 1108922Swilliam.wang@arm.com} 1118839Sandreas.hansson@arm.com 1129294Sandreas.hansson@arm.comBaseSlavePort & 1139294Sandreas.hansson@arm.comRubyPort::getSlavePort(const std::string &if_name, PortID idx) 1148922Swilliam.wang@arm.com{ 11510090Snilay@cs.wisc.edu if (if_name == "mem_slave_port") { 11610090Snilay@cs.wisc.edu return memSlavePort; 11710090Snilay@cs.wisc.edu } 11810090Snilay@cs.wisc.edu 11910090Snilay@cs.wisc.edu if (if_name == "pio_slave_port") 12010090Snilay@cs.wisc.edu return pioSlavePort; 12110090Snilay@cs.wisc.edu 1228922Swilliam.wang@arm.com // used by the CPUs to connect the caches to the interconnect, and 1238922Swilliam.wang@arm.com // for the x86 case also the interrupt master 1248922Swilliam.wang@arm.com if (if_name != "slave") { 1258922Swilliam.wang@arm.com // pass it along to our super class 1268922Swilliam.wang@arm.com return MemObject::getSlavePort(if_name, idx); 1278922Swilliam.wang@arm.com } else { 1289294Sandreas.hansson@arm.com if (idx >= static_cast<PortID>(slave_ports.size())) { 1298922Swilliam.wang@arm.com panic("RubyPort::getSlavePort: unknown index %d\n", idx); 1308922Swilliam.wang@arm.com } 1318922Swilliam.wang@arm.com 1328922Swilliam.wang@arm.com return *slave_ports[idx]; 1337039Snate@binkert.org } 1346876Ssteve.reinhardt@amd.com} 1356882SBrad.Beckmann@amd.com 13610090Snilay@cs.wisc.eduRubyPort::PioMasterPort::PioMasterPort(const std::string &_name, 1376882SBrad.Beckmann@amd.com RubyPort *_port) 13810713Sandreas.hansson@arm.com : QueuedMasterPort(_name, _port, reqQueue, snoopRespQueue), 13910713Sandreas.hansson@arm.com reqQueue(*_port, *this), snoopRespQueue(*_port, *this) 1406882SBrad.Beckmann@amd.com{ 14110090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Created master pioport on sequencer %s\n", _name); 1426882SBrad.Beckmann@amd.com} 1436882SBrad.Beckmann@amd.com 14410090Snilay@cs.wisc.eduRubyPort::PioSlavePort::PioSlavePort(const std::string &_name, 14510090Snilay@cs.wisc.edu RubyPort *_port) 14610090Snilay@cs.wisc.edu : QueuedSlavePort(_name, _port, queue), queue(*_port, *this) 14710090Snilay@cs.wisc.edu{ 14810090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Created slave pioport on sequencer %s\n", _name); 14910090Snilay@cs.wisc.edu} 15010090Snilay@cs.wisc.edu 15110090Snilay@cs.wisc.eduRubyPort::MemMasterPort::MemMasterPort(const std::string &_name, 15210090Snilay@cs.wisc.edu RubyPort *_port) 15310713Sandreas.hansson@arm.com : QueuedMasterPort(_name, _port, reqQueue, snoopRespQueue), 15410713Sandreas.hansson@arm.com reqQueue(*_port, *this), snoopRespQueue(*_port, *this) 15510090Snilay@cs.wisc.edu{ 15610090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Created master memport on ruby sequencer %s\n", _name); 15710090Snilay@cs.wisc.edu} 15810090Snilay@cs.wisc.edu 15910090Snilay@cs.wisc.eduRubyPort::MemSlavePort::MemSlavePort(const std::string &_name, RubyPort *_port, 16010525Snilay@cs.wisc.edu bool _access_backing_store, PortID id) 16110089Sandreas.hansson@arm.com : QueuedSlavePort(_name, _port, queue, id), queue(*_port, *this), 16210919Sbrandon.potter@amd.com access_backing_store(_access_backing_store) 1636882SBrad.Beckmann@amd.com{ 16410090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Created slave memport on ruby sequencer %s\n", _name); 1656882SBrad.Beckmann@amd.com} 1666882SBrad.Beckmann@amd.com 16710089Sandreas.hansson@arm.combool 16810090Snilay@cs.wisc.eduRubyPort::PioMasterPort::recvTimingResp(PacketPtr pkt) 16910090Snilay@cs.wisc.edu{ 17010919Sbrandon.potter@amd.com RubyPort *rp = static_cast<RubyPort *>(&owner); 17110090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Response for address: 0x%#x\n", pkt->getAddr()); 17210090Snilay@cs.wisc.edu 17310090Snilay@cs.wisc.edu // send next cycle 17410919Sbrandon.potter@amd.com rp->pioSlavePort.schedTimingResp( 17510919Sbrandon.potter@amd.com pkt, curTick() + rp->m_ruby_system->clockPeriod()); 17610090Snilay@cs.wisc.edu return true; 17710090Snilay@cs.wisc.edu} 17810090Snilay@cs.wisc.edu 17910090Snilay@cs.wisc.edubool RubyPort::MemMasterPort::recvTimingResp(PacketPtr pkt) 18010089Sandreas.hansson@arm.com{ 18110089Sandreas.hansson@arm.com // got a response from a device 18210089Sandreas.hansson@arm.com assert(pkt->isResponse()); 1836882SBrad.Beckmann@amd.com 18410090Snilay@cs.wisc.edu // First we must retrieve the request port from the sender State 18510090Snilay@cs.wisc.edu RubyPort::SenderState *senderState = 18610090Snilay@cs.wisc.edu safe_cast<RubyPort::SenderState *>(pkt->popSenderState()); 18710090Snilay@cs.wisc.edu MemSlavePort *port = senderState->port; 18810090Snilay@cs.wisc.edu assert(port != NULL); 18910090Snilay@cs.wisc.edu delete senderState; 1907039Snate@binkert.org 19110657Sandreas.hansson@arm.com // In FS mode, ruby memory will receive pio responses from devices 19210657Sandreas.hansson@arm.com // and it must forward these responses back to the particular CPU. 19310657Sandreas.hansson@arm.com DPRINTF(RubyPort, "Pio response for address %#x, going to %s\n", 19410657Sandreas.hansson@arm.com pkt->getAddr(), port->name()); 19510657Sandreas.hansson@arm.com 19610089Sandreas.hansson@arm.com // attempt to send the response in the next cycle 19710919Sbrandon.potter@amd.com RubyPort *rp = static_cast<RubyPort *>(&owner); 19810919Sbrandon.potter@amd.com port->schedTimingResp(pkt, curTick() + rp->m_ruby_system->clockPeriod()); 1997039Snate@binkert.org 2006882SBrad.Beckmann@amd.com return true; 2016882SBrad.Beckmann@amd.com} 2026882SBrad.Beckmann@amd.com 2036882SBrad.Beckmann@amd.combool 20410090Snilay@cs.wisc.eduRubyPort::PioSlavePort::recvTimingReq(PacketPtr pkt) 2056882SBrad.Beckmann@amd.com{ 20610090Snilay@cs.wisc.edu RubyPort *ruby_port = static_cast<RubyPort *>(&owner); 20710090Snilay@cs.wisc.edu 20810090Snilay@cs.wisc.edu for (size_t i = 0; i < ruby_port->master_ports.size(); ++i) { 20910090Snilay@cs.wisc.edu AddrRangeList l = ruby_port->master_ports[i]->getAddrRanges(); 21010090Snilay@cs.wisc.edu for (auto it = l.begin(); it != l.end(); ++it) { 21110090Snilay@cs.wisc.edu if (it->contains(pkt->getAddr())) { 21210412Sandreas.hansson@arm.com // generally it is not safe to assume success here as 21310412Sandreas.hansson@arm.com // the port could be blocked 21410412Sandreas.hansson@arm.com bool M5_VAR_USED success = 21510412Sandreas.hansson@arm.com ruby_port->master_ports[i]->sendTimingReq(pkt); 21610412Sandreas.hansson@arm.com assert(success); 21710090Snilay@cs.wisc.edu return true; 21810090Snilay@cs.wisc.edu } 21910090Snilay@cs.wisc.edu } 22010090Snilay@cs.wisc.edu } 22110090Snilay@cs.wisc.edu panic("Should never reach here!\n"); 22210090Snilay@cs.wisc.edu} 22310090Snilay@cs.wisc.edu 22410090Snilay@cs.wisc.edubool 22510090Snilay@cs.wisc.eduRubyPort::MemSlavePort::recvTimingReq(PacketPtr pkt) 22610090Snilay@cs.wisc.edu{ 22710090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Timing request for address %#x on port %d\n", 22810090Snilay@cs.wisc.edu pkt->getAddr(), id); 22910090Snilay@cs.wisc.edu RubyPort *ruby_port = static_cast<RubyPort *>(&owner); 2306882SBrad.Beckmann@amd.com 2319662Sandreas.hansson@arm.com if (pkt->memInhibitAsserted()) 2329662Sandreas.hansson@arm.com panic("RubyPort should never see an inhibited request\n"); 2336882SBrad.Beckmann@amd.com 2346882SBrad.Beckmann@amd.com // Check for pio requests and directly send them to the dedicated 2356882SBrad.Beckmann@amd.com // pio port. 2366882SBrad.Beckmann@amd.com if (!isPhysMemAddress(pkt->getAddr())) { 23710090Snilay@cs.wisc.edu assert(ruby_port->memMasterPort.isConnected()); 23810090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Request address %#x assumed to be a pio address\n", 2396922SBrad.Beckmann@amd.com pkt->getAddr()); 2406882SBrad.Beckmann@amd.com 24110090Snilay@cs.wisc.edu // Save the port in the sender state object to be used later to 24210090Snilay@cs.wisc.edu // route the response 24310090Snilay@cs.wisc.edu pkt->pushSenderState(new SenderState(this)); 24410090Snilay@cs.wisc.edu 2459163Sandreas.hansson@arm.com // send next cycle 24610919Sbrandon.potter@amd.com RubySystem *rs = ruby_port->m_ruby_system; 24710090Snilay@cs.wisc.edu ruby_port->memMasterPort.schedTimingReq(pkt, 24810919Sbrandon.potter@amd.com curTick() + rs->clockPeriod()); 2499163Sandreas.hansson@arm.com return true; 2506882SBrad.Beckmann@amd.com } 2516882SBrad.Beckmann@amd.com 2528615Snilay@cs.wisc.edu assert(Address(pkt->getAddr()).getOffset() + pkt->getSize() <= 2538615Snilay@cs.wisc.edu RubySystem::getBlockSizeBytes()); 2547906SBrad.Beckmann@amd.com 2556882SBrad.Beckmann@amd.com // Submit the ruby request 2568615Snilay@cs.wisc.edu RequestStatus requestStatus = ruby_port->makeRequest(pkt); 2577023SBrad.Beckmann@amd.com 2587550SBrad.Beckmann@amd.com // If the request successfully issued then we should return true. 25910089Sandreas.hansson@arm.com // Otherwise, we need to tell the port to retry at a later point 26010089Sandreas.hansson@arm.com // and return false. 2617550SBrad.Beckmann@amd.com if (requestStatus == RequestStatus_Issued) { 26210657Sandreas.hansson@arm.com // Save the port in the sender state object to be used later to 26310657Sandreas.hansson@arm.com // route the response 26410657Sandreas.hansson@arm.com pkt->pushSenderState(new SenderState(this)); 26510657Sandreas.hansson@arm.com 26610089Sandreas.hansson@arm.com DPRINTF(RubyPort, "Request %s 0x%x issued\n", pkt->cmdString(), 26710089Sandreas.hansson@arm.com pkt->getAddr()); 2686922SBrad.Beckmann@amd.com return true; 2696882SBrad.Beckmann@amd.com } 2707023SBrad.Beckmann@amd.com 2717910SBrad.Beckmann@amd.com // 27210919Sbrandon.potter@amd.com // Unless one is using the ruby tester, record the stalled M5 port for 2737910SBrad.Beckmann@amd.com // later retry when the sequencer becomes free. 2747910SBrad.Beckmann@amd.com // 2757910SBrad.Beckmann@amd.com if (!ruby_port->m_usingRubyTester) { 2767910SBrad.Beckmann@amd.com ruby_port->addToRetryList(this); 2777910SBrad.Beckmann@amd.com } 2787910SBrad.Beckmann@amd.com 27910090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Request for address %#x did not issued because %s\n", 2807039Snate@binkert.org pkt->getAddr(), RequestStatus_to_string(requestStatus)); 2817039Snate@binkert.org 2826922SBrad.Beckmann@amd.com return false; 2836882SBrad.Beckmann@amd.com} 2846882SBrad.Beckmann@amd.com 2858436SBrad.Beckmann@amd.comvoid 28610090Snilay@cs.wisc.eduRubyPort::MemSlavePort::recvFunctional(PacketPtr pkt) 2878436SBrad.Beckmann@amd.com{ 28810090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Functional access for address: %#x\n", pkt->getAddr()); 2898436SBrad.Beckmann@amd.com 29010919Sbrandon.potter@amd.com RubyPort *rp M5_VAR_USED = static_cast<RubyPort *>(&owner); 29110919Sbrandon.potter@amd.com RubySystem *rs = rp->m_ruby_system; 29210919Sbrandon.potter@amd.com 2938436SBrad.Beckmann@amd.com // Check for pio requests and directly send them to the dedicated 2948436SBrad.Beckmann@amd.com // pio port. 2958436SBrad.Beckmann@amd.com if (!isPhysMemAddress(pkt->getAddr())) { 29610919Sbrandon.potter@amd.com assert(rp->memMasterPort.isConnected()); 29710090Snilay@cs.wisc.edu DPRINTF(RubyPort, "Pio Request for address: 0x%#x\n", pkt->getAddr()); 29810090Snilay@cs.wisc.edu panic("RubyPort::PioMasterPort::recvFunctional() not implemented!\n"); 2998436SBrad.Beckmann@amd.com } 3008436SBrad.Beckmann@amd.com 3018436SBrad.Beckmann@amd.com assert(pkt->getAddr() + pkt->getSize() <= 3028436SBrad.Beckmann@amd.com line_address(Address(pkt->getAddr())).getAddress() + 3038436SBrad.Beckmann@amd.com RubySystem::getBlockSizeBytes()); 3048436SBrad.Beckmann@amd.com 30510525Snilay@cs.wisc.edu if (access_backing_store) { 3068436SBrad.Beckmann@amd.com // The attached physmem contains the official version of data. 3078436SBrad.Beckmann@amd.com // The following command performs the real functional access. 3088436SBrad.Beckmann@amd.com // This line should be removed once Ruby supplies the official version 3098436SBrad.Beckmann@amd.com // of data. 31010919Sbrandon.potter@amd.com rs->getPhysMem()->functionalAccess(pkt); 31110706Spower.jg@gmail.com } else { 31210706Spower.jg@gmail.com bool accessSucceeded = false; 31310706Spower.jg@gmail.com bool needsResponse = pkt->needsResponse(); 31410706Spower.jg@gmail.com 31510706Spower.jg@gmail.com // Do the functional access on ruby memory 31610706Spower.jg@gmail.com if (pkt->isRead()) { 31710919Sbrandon.potter@amd.com accessSucceeded = rs->functionalRead(pkt); 31810706Spower.jg@gmail.com } else if (pkt->isWrite()) { 31910919Sbrandon.potter@amd.com accessSucceeded = rs->functionalWrite(pkt); 32010706Spower.jg@gmail.com } else { 32110706Spower.jg@gmail.com panic("Unsupported functional command %s\n", pkt->cmdString()); 32210706Spower.jg@gmail.com } 32310706Spower.jg@gmail.com 32410706Spower.jg@gmail.com // Unless the requester explicitly said otherwise, generate an error if 32510706Spower.jg@gmail.com // the functional request failed 32610706Spower.jg@gmail.com if (!accessSucceeded && !pkt->suppressFuncError()) { 32710706Spower.jg@gmail.com fatal("Ruby functional %s failed for address %#x\n", 32810706Spower.jg@gmail.com pkt->isWrite() ? "write" : "read", pkt->getAddr()); 32910706Spower.jg@gmail.com } 33010706Spower.jg@gmail.com 33110706Spower.jg@gmail.com // turn packet around to go back to requester if response expected 33210706Spower.jg@gmail.com if (needsResponse) { 33310706Spower.jg@gmail.com pkt->setFunctionalResponseStatus(accessSucceeded); 33410706Spower.jg@gmail.com } 33510706Spower.jg@gmail.com 33610706Spower.jg@gmail.com DPRINTF(RubyPort, "Functional access %s!\n", 33710706Spower.jg@gmail.com accessSucceeded ? "successful":"failed"); 3388436SBrad.Beckmann@amd.com } 3398436SBrad.Beckmann@amd.com} 3408436SBrad.Beckmann@amd.com 3416882SBrad.Beckmann@amd.comvoid 3426922SBrad.Beckmann@amd.comRubyPort::ruby_hit_callback(PacketPtr pkt) 3436882SBrad.Beckmann@amd.com{ 34410089Sandreas.hansson@arm.com DPRINTF(RubyPort, "Hit callback for %s 0x%x\n", pkt->cmdString(), 34510089Sandreas.hansson@arm.com pkt->getAddr()); 3467039Snate@binkert.org 34710089Sandreas.hansson@arm.com // The packet was destined for memory and has not yet been turned 34810089Sandreas.hansson@arm.com // into a response 34910089Sandreas.hansson@arm.com assert(system->isMemAddr(pkt->getAddr())); 35010089Sandreas.hansson@arm.com assert(pkt->isRequest()); 3516882SBrad.Beckmann@amd.com 35210657Sandreas.hansson@arm.com // First we must retrieve the request port from the sender State 35310657Sandreas.hansson@arm.com RubyPort::SenderState *senderState = 35410657Sandreas.hansson@arm.com safe_cast<RubyPort::SenderState *>(pkt->popSenderState()); 35510657Sandreas.hansson@arm.com MemSlavePort *port = senderState->port; 35610657Sandreas.hansson@arm.com assert(port != NULL); 35710657Sandreas.hansson@arm.com delete senderState; 35810089Sandreas.hansson@arm.com 35910657Sandreas.hansson@arm.com port->hitCallback(pkt); 3607910SBrad.Beckmann@amd.com 3617910SBrad.Beckmann@amd.com // 36210090Snilay@cs.wisc.edu // If we had to stall the MemSlavePorts, wake them up because the sequencer 3637910SBrad.Beckmann@amd.com // likely has free resources now. 3647910SBrad.Beckmann@amd.com // 36510089Sandreas.hansson@arm.com if (!retryList.empty()) { 3668162SBrad.Beckmann@amd.com // 3678162SBrad.Beckmann@amd.com // Record the current list of ports to retry on a temporary list before 36810917Sbrandon.potter@amd.com // calling sendRetry on those ports. sendRetry will cause an 3698162SBrad.Beckmann@amd.com // immediate retry, which may result in the ports being put back on the 3708162SBrad.Beckmann@amd.com // list. Therefore we want to clear the retryList before calling 3718162SBrad.Beckmann@amd.com // sendRetry. 3728162SBrad.Beckmann@amd.com // 37310090Snilay@cs.wisc.edu std::vector<MemSlavePort *> curRetryList(retryList); 3748162SBrad.Beckmann@amd.com 3758162SBrad.Beckmann@amd.com retryList.clear(); 37610089Sandreas.hansson@arm.com 37710089Sandreas.hansson@arm.com for (auto i = curRetryList.begin(); i != curRetryList.end(); ++i) { 3788162SBrad.Beckmann@amd.com DPRINTF(RubyPort, 3797910SBrad.Beckmann@amd.com "Sequencer may now be free. SendRetry to port %s\n", 3807910SBrad.Beckmann@amd.com (*i)->name()); 38110713Sandreas.hansson@arm.com (*i)->sendRetryReq(); 3827910SBrad.Beckmann@amd.com } 3837910SBrad.Beckmann@amd.com } 3848688Snilay@cs.wisc.edu 3858688Snilay@cs.wisc.edu testDrainComplete(); 3868688Snilay@cs.wisc.edu} 3878688Snilay@cs.wisc.edu 3888688Snilay@cs.wisc.eduvoid 3898688Snilay@cs.wisc.eduRubyPort::testDrainComplete() 3908688Snilay@cs.wisc.edu{ 3918688Snilay@cs.wisc.edu //If we weren't able to drain before, we might be able to now. 39210913Sandreas.sandberg@arm.com if (drainState() == DrainState::Draining) { 3939245Shestness@cs.wisc.edu unsigned int drainCount = outstandingCount(); 3949152Satgutier@umich.edu DPRINTF(Drain, "Drain count: %u\n", drainCount); 3958688Snilay@cs.wisc.edu if (drainCount == 0) { 3969342SAndreas.Sandberg@arm.com DPRINTF(Drain, "RubyPort done draining, signaling drain done\n"); 39710913Sandreas.sandberg@arm.com signalDrainDone(); 3988688Snilay@cs.wisc.edu } 3998688Snilay@cs.wisc.edu } 4008688Snilay@cs.wisc.edu} 4018688Snilay@cs.wisc.edu 40210913Sandreas.sandberg@arm.comDrainState 40310913Sandreas.sandberg@arm.comRubyPort::drain() 4048688Snilay@cs.wisc.edu{ 4058688Snilay@cs.wisc.edu if (isDeadlockEventScheduled()) { 4068688Snilay@cs.wisc.edu descheduleDeadlockEvent(); 4078688Snilay@cs.wisc.edu } 4088688Snilay@cs.wisc.edu 4099245Shestness@cs.wisc.edu // 4109245Shestness@cs.wisc.edu // If the RubyPort is not empty, then it needs to clear all outstanding 41110913Sandreas.sandberg@arm.com // requests before it should call signalDrainDone() 4129245Shestness@cs.wisc.edu // 4139245Shestness@cs.wisc.edu DPRINTF(Config, "outstanding count %d\n", outstandingCount()); 41410913Sandreas.sandberg@arm.com if (outstandingCount() > 0) { 4159152Satgutier@umich.edu DPRINTF(Drain, "RubyPort not drained\n"); 41610913Sandreas.sandberg@arm.com return DrainState::Draining; 41710913Sandreas.sandberg@arm.com } else { 41810913Sandreas.sandberg@arm.com return DrainState::Drained; 4198688Snilay@cs.wisc.edu } 4206882SBrad.Beckmann@amd.com} 4216882SBrad.Beckmann@amd.com 4226882SBrad.Beckmann@amd.comvoid 42310090Snilay@cs.wisc.eduRubyPort::MemSlavePort::hitCallback(PacketPtr pkt) 4246882SBrad.Beckmann@amd.com{ 4256882SBrad.Beckmann@amd.com bool needsResponse = pkt->needsResponse(); 4266882SBrad.Beckmann@amd.com 42710917Sbrandon.potter@amd.com // Unless specified at configuraiton, all responses except failed SC 4288184Ssomayeh@cs.wisc.edu // and Flush operations access M5 physical memory. 42910525Snilay@cs.wisc.edu bool accessPhysMem = access_backing_store; 4307550SBrad.Beckmann@amd.com 4317550SBrad.Beckmann@amd.com if (pkt->isLLSC()) { 4327550SBrad.Beckmann@amd.com if (pkt->isWrite()) { 4337550SBrad.Beckmann@amd.com if (pkt->req->getExtraData() != 0) { 4347550SBrad.Beckmann@amd.com // 4357550SBrad.Beckmann@amd.com // Successful SC packets convert to normal writes 4367550SBrad.Beckmann@amd.com // 4377550SBrad.Beckmann@amd.com pkt->convertScToWrite(); 4387550SBrad.Beckmann@amd.com } else { 4397550SBrad.Beckmann@amd.com // 4407550SBrad.Beckmann@amd.com // Failed SC packets don't access physical memory and thus 4417550SBrad.Beckmann@amd.com // the RubyPort itself must convert it to a response. 4427550SBrad.Beckmann@amd.com // 4437550SBrad.Beckmann@amd.com accessPhysMem = false; 4447550SBrad.Beckmann@amd.com } 4457550SBrad.Beckmann@amd.com } else { 4467550SBrad.Beckmann@amd.com // 4477550SBrad.Beckmann@amd.com // All LL packets convert to normal loads so that M5 PhysMem does 4487550SBrad.Beckmann@amd.com // not lock the blocks. 4497550SBrad.Beckmann@amd.com // 4507550SBrad.Beckmann@amd.com pkt->convertLlToRead(); 4517550SBrad.Beckmann@amd.com } 4527550SBrad.Beckmann@amd.com } 4538184Ssomayeh@cs.wisc.edu 4548184Ssomayeh@cs.wisc.edu // Flush requests don't access physical memory 4558184Ssomayeh@cs.wisc.edu if (pkt->isFlush()) { 4568184Ssomayeh@cs.wisc.edu accessPhysMem = false; 4578184Ssomayeh@cs.wisc.edu } 4588184Ssomayeh@cs.wisc.edu 4598161SBrad.Beckmann@amd.com DPRINTF(RubyPort, "Hit callback needs response %d\n", needsResponse); 4606882SBrad.Beckmann@amd.com 46110919Sbrandon.potter@amd.com RubyPort *ruby_port = static_cast<RubyPort *>(&owner); 46210919Sbrandon.potter@amd.com RubySystem *rs = ruby_port->m_ruby_system; 4637550SBrad.Beckmann@amd.com if (accessPhysMem) { 46410919Sbrandon.potter@amd.com rs->getPhysMem()->access(pkt); 4658184Ssomayeh@cs.wisc.edu } else if (needsResponse) { 4667915SBrad.Beckmann@amd.com pkt->makeResponse(); 4677550SBrad.Beckmann@amd.com } 4686882SBrad.Beckmann@amd.com 4696882SBrad.Beckmann@amd.com // turn packet around to go back to requester if response expected 4706882SBrad.Beckmann@amd.com if (needsResponse) { 4718161SBrad.Beckmann@amd.com DPRINTF(RubyPort, "Sending packet back over port\n"); 47210961Sdavid.hashe@amd.com // Send a response in the same cycle. There is no need to delay the 47310961Sdavid.hashe@amd.com // response because the response latency is already incurred in the 47410961Sdavid.hashe@amd.com // Ruby protocol. 47510961Sdavid.hashe@amd.com schedTimingResp(pkt, curTick()); 4766882SBrad.Beckmann@amd.com } else { 4776882SBrad.Beckmann@amd.com delete pkt; 4786882SBrad.Beckmann@amd.com } 47910525Snilay@cs.wisc.edu 4808161SBrad.Beckmann@amd.com DPRINTF(RubyPort, "Hit callback done!\n"); 4816882SBrad.Beckmann@amd.com} 4826882SBrad.Beckmann@amd.com 4838922Swilliam.wang@arm.comAddrRangeList 48410090Snilay@cs.wisc.eduRubyPort::PioSlavePort::getAddrRanges() const 4858922Swilliam.wang@arm.com{ 4868922Swilliam.wang@arm.com // at the moment the assumption is that the master does not care 4878922Swilliam.wang@arm.com AddrRangeList ranges; 48810090Snilay@cs.wisc.edu RubyPort *ruby_port = static_cast<RubyPort *>(&owner); 48910090Snilay@cs.wisc.edu 49010090Snilay@cs.wisc.edu for (size_t i = 0; i < ruby_port->master_ports.size(); ++i) { 49110090Snilay@cs.wisc.edu ranges.splice(ranges.begin(), 49210090Snilay@cs.wisc.edu ruby_port->master_ports[i]->getAddrRanges()); 49310090Snilay@cs.wisc.edu } 49410481Sandreas.hansson@arm.com for (const auto M5_VAR_USED &r : ranges) 49510481Sandreas.hansson@arm.com DPRINTF(RubyPort, "%s\n", r.to_string()); 4968922Swilliam.wang@arm.com return ranges; 4978922Swilliam.wang@arm.com} 4988922Swilliam.wang@arm.com 4996882SBrad.Beckmann@amd.combool 50010090Snilay@cs.wisc.eduRubyPort::MemSlavePort::isPhysMemAddress(Addr addr) const 5016882SBrad.Beckmann@amd.com{ 50210090Snilay@cs.wisc.edu RubyPort *ruby_port = static_cast<RubyPort *>(&owner); 5038931Sandreas.hansson@arm.com return ruby_port->system->isMemAddr(addr); 5046882SBrad.Beckmann@amd.com} 5057909Shestness@cs.utexas.edu 5068717Snilay@cs.wisc.eduvoid 5078717Snilay@cs.wisc.eduRubyPort::ruby_eviction_callback(const Address& address) 5088717Snilay@cs.wisc.edu{ 5098717Snilay@cs.wisc.edu DPRINTF(RubyPort, "Sending invalidations.\n"); 5109633Sjthestness@gmail.com // This request is deleted in the stack-allocated packet destructor 5119633Sjthestness@gmail.com // when this function exits 5129633Sjthestness@gmail.com // TODO: should this really be using funcMasterId? 5139633Sjthestness@gmail.com RequestPtr req = 5149633Sjthestness@gmail.com new Request(address.getAddress(), 0, 0, Request::funcMasterId); 5159633Sjthestness@gmail.com // Use a single packet to signal all snooping ports of the invalidation. 5169633Sjthestness@gmail.com // This assumes that snooping ports do NOT modify the packet/request 51710886Sandreas.hansson@arm.com Packet pkt(req, MemCmd::InvalidateReq); 5188922Swilliam.wang@arm.com for (CpuPortIter p = slave_ports.begin(); p != slave_ports.end(); ++p) { 5199088Sandreas.hansson@arm.com // check if the connected master port is snooping 5209088Sandreas.hansson@arm.com if ((*p)->isSnooping()) { 5218948Sandreas.hansson@arm.com // send as a snoop request 5229633Sjthestness@gmail.com (*p)->sendTimingSnoopReq(&pkt); 5238922Swilliam.wang@arm.com } 5248717Snilay@cs.wisc.edu } 5258717Snilay@cs.wisc.edu} 52610090Snilay@cs.wisc.edu 52710090Snilay@cs.wisc.eduvoid 52810090Snilay@cs.wisc.eduRubyPort::PioMasterPort::recvRangeChange() 52910090Snilay@cs.wisc.edu{ 53010090Snilay@cs.wisc.edu RubyPort &r = static_cast<RubyPort &>(owner); 53110090Snilay@cs.wisc.edu r.gotAddrRanges--; 53210117Snilay@cs.wisc.edu if (r.gotAddrRanges == 0 && FullSystem) { 53310090Snilay@cs.wisc.edu r.pioSlavePort.sendRangeChange(); 53410090Snilay@cs.wisc.edu } 53510090Snilay@cs.wisc.edu} 536