Switch.cc revision 11793
16145Snate@binkert.org/* 26145Snate@binkert.org * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 36145Snate@binkert.org * All rights reserved. 46145Snate@binkert.org * 56145Snate@binkert.org * Redistribution and use in source and binary forms, with or without 66145Snate@binkert.org * modification, are permitted provided that the following conditions are 76145Snate@binkert.org * met: redistributions of source code must retain the above copyright 86145Snate@binkert.org * notice, this list of conditions and the following disclaimer; 96145Snate@binkert.org * redistributions in binary form must reproduce the above copyright 106145Snate@binkert.org * notice, this list of conditions and the following disclaimer in the 116145Snate@binkert.org * documentation and/or other materials provided with the distribution; 126145Snate@binkert.org * neither the name of the copyright holders nor the names of its 136145Snate@binkert.org * contributors may be used to endorse or promote products derived from 146145Snate@binkert.org * this software without specific prior written permission. 156145Snate@binkert.org * 166145Snate@binkert.org * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 176145Snate@binkert.org * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 186145Snate@binkert.org * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 196145Snate@binkert.org * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 206145Snate@binkert.org * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 216145Snate@binkert.org * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 226145Snate@binkert.org * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236145Snate@binkert.org * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246145Snate@binkert.org * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256145Snate@binkert.org * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 266145Snate@binkert.org * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276145Snate@binkert.org */ 286145Snate@binkert.org 2911793Sbrandon.potter@amd.com#include "mem/ruby/network/simple/Switch.hh" 3011793Sbrandon.potter@amd.com 317454Snate@binkert.org#include <numeric> 327454Snate@binkert.org 338645Snilay@cs.wisc.edu#include "base/cast.hh" 347454Snate@binkert.org#include "base/stl_helpers.hh" 3510301Snilay@cs.wisc.edu#include "mem/ruby/network/MessageBuffer.hh" 367054Snate@binkert.org#include "mem/ruby/network/simple/PerfectSwitch.hh" 378259SBrad.Beckmann@amd.com#include "mem/ruby/network/simple/SimpleNetwork.hh" 386154Snate@binkert.org#include "mem/ruby/network/simple/Throttle.hh" 396145Snate@binkert.org 407055Snate@binkert.orgusing namespace std; 417454Snate@binkert.orgusing m5::stl_helpers::deletePointers; 427454Snate@binkert.orgusing m5::stl_helpers::operator<<; 437055Snate@binkert.org 449274Snilay@cs.wisc.eduSwitch::Switch(const Params *p) : BasicRouter(p) 456145Snate@binkert.org{ 469858Snilay@cs.wisc.edu m_perfect_switch = new PerfectSwitch(m_id, this, p->virt_nets); 4711021Sjthestness@gmail.com m_port_buffers = p->port_buffers; 4811021Sjthestness@gmail.com m_num_connected_buffers = 0; 496145Snate@binkert.org} 506145Snate@binkert.org 516145Snate@binkert.orgSwitch::~Switch() 526145Snate@binkert.org{ 539858Snilay@cs.wisc.edu delete m_perfect_switch; 546145Snate@binkert.org 557054Snate@binkert.org // Delete throttles (one per output port) 567454Snate@binkert.org deletePointers(m_throttles); 576145Snate@binkert.org 587054Snate@binkert.org // Delete MessageBuffers 5911021Sjthestness@gmail.com deletePointers(m_port_buffers); 606145Snate@binkert.org} 616145Snate@binkert.org 627054Snate@binkert.orgvoid 639274Snilay@cs.wisc.eduSwitch::init() 649274Snilay@cs.wisc.edu{ 659274Snilay@cs.wisc.edu BasicRouter::init(); 669858Snilay@cs.wisc.edu m_perfect_switch->init(m_network_ptr); 679274Snilay@cs.wisc.edu} 689274Snilay@cs.wisc.edu 699274Snilay@cs.wisc.eduvoid 7010370Snilay@cs.wisc.eduSwitch::addInPort(const vector<MessageBuffer*>& in) 716145Snate@binkert.org{ 729858Snilay@cs.wisc.edu m_perfect_switch->addInPort(in); 736145Snate@binkert.org} 746145Snate@binkert.org 757054Snate@binkert.orgvoid 7610370Snilay@cs.wisc.eduSwitch::addOutPort(const vector<MessageBuffer*>& out, 7710311Snilay@cs.wisc.edu const NetDest& routing_table_entry, 7810311Snilay@cs.wisc.edu Cycles link_latency, int bw_multiplier) 796145Snate@binkert.org{ 807054Snate@binkert.org // Create a throttle 8110918Sbrandon.potter@amd.com RubySystem *rs = m_network_ptr->params()->ruby_system; 8210918Sbrandon.potter@amd.com Throttle* throttle_ptr = new Throttle(m_id, rs, m_throttles.size(), 8310311Snilay@cs.wisc.edu link_latency, bw_multiplier, 8410311Snilay@cs.wisc.edu m_network_ptr->getEndpointBandwidth(), 8510311Snilay@cs.wisc.edu this); 8610311Snilay@cs.wisc.edu 877454Snate@binkert.org m_throttles.push_back(throttle_ptr); 886145Snate@binkert.org 897054Snate@binkert.org // Create one buffer per vnet (these are intermediaryQueues) 9010370Snilay@cs.wisc.edu vector<MessageBuffer*> intermediateBuffers; 9110311Snilay@cs.wisc.edu 9210370Snilay@cs.wisc.edu for (int i = 0; i < out.size(); ++i) { 9311021Sjthestness@gmail.com assert(m_num_connected_buffers < m_port_buffers.size()); 9411021Sjthestness@gmail.com MessageBuffer* buffer_ptr = m_port_buffers[m_num_connected_buffers]; 9511021Sjthestness@gmail.com m_num_connected_buffers++; 9610370Snilay@cs.wisc.edu intermediateBuffers.push_back(buffer_ptr); 979274Snilay@cs.wisc.edu } 986145Snate@binkert.org 997054Snate@binkert.org // Hook the queues to the PerfectSwitch 1009858Snilay@cs.wisc.edu m_perfect_switch->addOutPort(intermediateBuffers, routing_table_entry); 1016145Snate@binkert.org 1027054Snate@binkert.org // Hook the queues to the Throttle 1039508Snilay@cs.wisc.edu throttle_ptr->addLinks(intermediateBuffers, out); 1046145Snate@binkert.org} 1056145Snate@binkert.org 1067054Snate@binkert.orgconst Throttle* 1077054Snate@binkert.orgSwitch::getThrottle(LinkID link_number) const 1086145Snate@binkert.org{ 1097054Snate@binkert.org assert(m_throttles[link_number] != NULL); 1107054Snate@binkert.org return m_throttles[link_number]; 1116145Snate@binkert.org} 1126145Snate@binkert.org 1137054Snate@binkert.orgvoid 1149863Snilay@cs.wisc.eduSwitch::regStats() 1156145Snate@binkert.org{ 11611523Sdavid.guillen@arm.com BasicRouter::regStats(); 11711523Sdavid.guillen@arm.com 1189863Snilay@cs.wisc.edu for (int link = 0; link < m_throttles.size(); link++) { 1199863Snilay@cs.wisc.edu m_throttles[link]->regStats(name()); 1209863Snilay@cs.wisc.edu } 1216145Snate@binkert.org 1229863Snilay@cs.wisc.edu m_avg_utilization.name(name() + ".percent_links_utilized"); 1239863Snilay@cs.wisc.edu for (unsigned int i = 0; i < m_throttles.size(); i++) { 1249863Snilay@cs.wisc.edu m_avg_utilization += m_throttles[i]->getUtilization(); 1259863Snilay@cs.wisc.edu } 1269863Snilay@cs.wisc.edu m_avg_utilization /= Stats::constant(m_throttles.size()); 1276145Snate@binkert.org 1289863Snilay@cs.wisc.edu for (unsigned int type = MessageSizeType_FIRST; 1299863Snilay@cs.wisc.edu type < MessageSizeType_NUM; ++type) { 1309863Snilay@cs.wisc.edu m_msg_counts[type] 1319863Snilay@cs.wisc.edu .name(name() + ".msg_count." + 1329863Snilay@cs.wisc.edu MessageSizeType_to_string(MessageSizeType(type))) 1339863Snilay@cs.wisc.edu .flags(Stats::nozero) 1349863Snilay@cs.wisc.edu ; 1359863Snilay@cs.wisc.edu m_msg_bytes[type] 1369863Snilay@cs.wisc.edu .name(name() + ".msg_bytes." + 1379863Snilay@cs.wisc.edu MessageSizeType_to_string(MessageSizeType(type))) 1389863Snilay@cs.wisc.edu .flags(Stats::nozero) 1399863Snilay@cs.wisc.edu ; 1409863Snilay@cs.wisc.edu 1419863Snilay@cs.wisc.edu for (unsigned int i = 0; i < m_throttles.size(); i++) { 1429863Snilay@cs.wisc.edu m_msg_counts[type] += m_throttles[i]->getMsgCount(type); 1437054Snate@binkert.org } 1449863Snilay@cs.wisc.edu m_msg_bytes[type] = m_msg_counts[type] * Stats::constant( 1459863Snilay@cs.wisc.edu Network::MessageSizeType_to_int(MessageSizeType(type))); 1466145Snate@binkert.org } 1476145Snate@binkert.org} 1486145Snate@binkert.org 1497054Snate@binkert.orgvoid 1509863Snilay@cs.wisc.eduSwitch::resetStats() 1516145Snate@binkert.org{ 1529858Snilay@cs.wisc.edu m_perfect_switch->clearStats(); 1537054Snate@binkert.org for (int i = 0; i < m_throttles.size(); i++) { 1549863Snilay@cs.wisc.edu m_throttles[i]->clearStats(); 1559863Snilay@cs.wisc.edu } 1569863Snilay@cs.wisc.edu} 1579863Snilay@cs.wisc.edu 1589863Snilay@cs.wisc.eduvoid 1599863Snilay@cs.wisc.eduSwitch::collateStats() 1609863Snilay@cs.wisc.edu{ 1619863Snilay@cs.wisc.edu m_perfect_switch->collateStats(); 1629863Snilay@cs.wisc.edu for (int i = 0; i < m_throttles.size(); i++) { 1639863Snilay@cs.wisc.edu m_throttles[i]->collateStats(); 1646145Snate@binkert.org } 1656145Snate@binkert.org} 1666145Snate@binkert.org 1677054Snate@binkert.orgvoid 1687054Snate@binkert.orgSwitch::print(std::ostream& out) const 1696145Snate@binkert.org{ 1707054Snate@binkert.org // FIXME printing 1717054Snate@binkert.org out << "[Switch]"; 1726145Snate@binkert.org} 1739354Snilay@cs.wisc.edu 1749302Snilay@cs.wisc.edubool 1759302Snilay@cs.wisc.eduSwitch::functionalRead(Packet *pkt) 1769302Snilay@cs.wisc.edu{ 1779302Snilay@cs.wisc.edu return false; 1789302Snilay@cs.wisc.edu} 1799302Snilay@cs.wisc.edu 1809302Snilay@cs.wisc.eduuint32_t 1819302Snilay@cs.wisc.eduSwitch::functionalWrite(Packet *pkt) 1829302Snilay@cs.wisc.edu{ 1839302Snilay@cs.wisc.edu // Access the buffers in the switch for performing a functional write 1849302Snilay@cs.wisc.edu uint32_t num_functional_writes = 0; 18511021Sjthestness@gmail.com for (unsigned int i = 0; i < m_port_buffers.size(); ++i) { 18611021Sjthestness@gmail.com num_functional_writes += m_port_buffers[i]->functionalWrite(pkt); 1879302Snilay@cs.wisc.edu } 1889302Snilay@cs.wisc.edu return num_functional_writes; 1899302Snilay@cs.wisc.edu} 1909274Snilay@cs.wisc.edu 1919274Snilay@cs.wisc.eduSwitch * 1929274Snilay@cs.wisc.eduSwitchParams::create() 1939274Snilay@cs.wisc.edu{ 1949274Snilay@cs.wisc.edu return new Switch(this); 1959274Snilay@cs.wisc.edu} 196