Switch.cc revision 11523
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 297454Snate@binkert.org#include <numeric> 307454Snate@binkert.org 318645Snilay@cs.wisc.edu#include "base/cast.hh" 327454Snate@binkert.org#include "base/stl_helpers.hh" 3310301Snilay@cs.wisc.edu#include "mem/ruby/network/MessageBuffer.hh" 347054Snate@binkert.org#include "mem/ruby/network/simple/PerfectSwitch.hh" 358259SBrad.Beckmann@amd.com#include "mem/ruby/network/simple/SimpleNetwork.hh" 366154Snate@binkert.org#include "mem/ruby/network/simple/Switch.hh" 376154Snate@binkert.org#include "mem/ruby/network/simple/Throttle.hh" 386145Snate@binkert.org 397055Snate@binkert.orgusing namespace std; 407454Snate@binkert.orgusing m5::stl_helpers::deletePointers; 417454Snate@binkert.orgusing m5::stl_helpers::operator<<; 427055Snate@binkert.org 439274Snilay@cs.wisc.eduSwitch::Switch(const Params *p) : BasicRouter(p) 446145Snate@binkert.org{ 459858Snilay@cs.wisc.edu m_perfect_switch = new PerfectSwitch(m_id, this, p->virt_nets); 4611021Sjthestness@gmail.com m_port_buffers = p->port_buffers; 4711021Sjthestness@gmail.com m_num_connected_buffers = 0; 486145Snate@binkert.org} 496145Snate@binkert.org 506145Snate@binkert.orgSwitch::~Switch() 516145Snate@binkert.org{ 529858Snilay@cs.wisc.edu delete m_perfect_switch; 536145Snate@binkert.org 547054Snate@binkert.org // Delete throttles (one per output port) 557454Snate@binkert.org deletePointers(m_throttles); 566145Snate@binkert.org 577054Snate@binkert.org // Delete MessageBuffers 5811021Sjthestness@gmail.com deletePointers(m_port_buffers); 596145Snate@binkert.org} 606145Snate@binkert.org 617054Snate@binkert.orgvoid 629274Snilay@cs.wisc.eduSwitch::init() 639274Snilay@cs.wisc.edu{ 649274Snilay@cs.wisc.edu BasicRouter::init(); 659858Snilay@cs.wisc.edu m_perfect_switch->init(m_network_ptr); 669274Snilay@cs.wisc.edu} 679274Snilay@cs.wisc.edu 689274Snilay@cs.wisc.eduvoid 6910370Snilay@cs.wisc.eduSwitch::addInPort(const vector<MessageBuffer*>& in) 706145Snate@binkert.org{ 719858Snilay@cs.wisc.edu m_perfect_switch->addInPort(in); 726145Snate@binkert.org} 736145Snate@binkert.org 747054Snate@binkert.orgvoid 7510370Snilay@cs.wisc.eduSwitch::addOutPort(const vector<MessageBuffer*>& out, 7610311Snilay@cs.wisc.edu const NetDest& routing_table_entry, 7710311Snilay@cs.wisc.edu Cycles link_latency, int bw_multiplier) 786145Snate@binkert.org{ 797054Snate@binkert.org // Create a throttle 8010918Sbrandon.potter@amd.com RubySystem *rs = m_network_ptr->params()->ruby_system; 8110918Sbrandon.potter@amd.com Throttle* throttle_ptr = new Throttle(m_id, rs, m_throttles.size(), 8210311Snilay@cs.wisc.edu link_latency, bw_multiplier, 8310311Snilay@cs.wisc.edu m_network_ptr->getEndpointBandwidth(), 8410311Snilay@cs.wisc.edu this); 8510311Snilay@cs.wisc.edu 867454Snate@binkert.org m_throttles.push_back(throttle_ptr); 876145Snate@binkert.org 887054Snate@binkert.org // Create one buffer per vnet (these are intermediaryQueues) 8910370Snilay@cs.wisc.edu vector<MessageBuffer*> intermediateBuffers; 9010311Snilay@cs.wisc.edu 9110370Snilay@cs.wisc.edu for (int i = 0; i < out.size(); ++i) { 9211021Sjthestness@gmail.com assert(m_num_connected_buffers < m_port_buffers.size()); 9311021Sjthestness@gmail.com MessageBuffer* buffer_ptr = m_port_buffers[m_num_connected_buffers]; 9411021Sjthestness@gmail.com m_num_connected_buffers++; 9510370Snilay@cs.wisc.edu intermediateBuffers.push_back(buffer_ptr); 969274Snilay@cs.wisc.edu } 976145Snate@binkert.org 987054Snate@binkert.org // Hook the queues to the PerfectSwitch 999858Snilay@cs.wisc.edu m_perfect_switch->addOutPort(intermediateBuffers, routing_table_entry); 1006145Snate@binkert.org 1017054Snate@binkert.org // Hook the queues to the Throttle 1029508Snilay@cs.wisc.edu throttle_ptr->addLinks(intermediateBuffers, out); 1036145Snate@binkert.org} 1046145Snate@binkert.org 1057054Snate@binkert.orgconst Throttle* 1067054Snate@binkert.orgSwitch::getThrottle(LinkID link_number) const 1076145Snate@binkert.org{ 1087054Snate@binkert.org assert(m_throttles[link_number] != NULL); 1097054Snate@binkert.org return m_throttles[link_number]; 1106145Snate@binkert.org} 1116145Snate@binkert.org 1127054Snate@binkert.orgvoid 1139863Snilay@cs.wisc.eduSwitch::regStats() 1146145Snate@binkert.org{ 11511523Sdavid.guillen@arm.com BasicRouter::regStats(); 11611523Sdavid.guillen@arm.com 1179863Snilay@cs.wisc.edu for (int link = 0; link < m_throttles.size(); link++) { 1189863Snilay@cs.wisc.edu m_throttles[link]->regStats(name()); 1199863Snilay@cs.wisc.edu } 1206145Snate@binkert.org 1219863Snilay@cs.wisc.edu m_avg_utilization.name(name() + ".percent_links_utilized"); 1229863Snilay@cs.wisc.edu for (unsigned int i = 0; i < m_throttles.size(); i++) { 1239863Snilay@cs.wisc.edu m_avg_utilization += m_throttles[i]->getUtilization(); 1249863Snilay@cs.wisc.edu } 1259863Snilay@cs.wisc.edu m_avg_utilization /= Stats::constant(m_throttles.size()); 1266145Snate@binkert.org 1279863Snilay@cs.wisc.edu for (unsigned int type = MessageSizeType_FIRST; 1289863Snilay@cs.wisc.edu type < MessageSizeType_NUM; ++type) { 1299863Snilay@cs.wisc.edu m_msg_counts[type] 1309863Snilay@cs.wisc.edu .name(name() + ".msg_count." + 1319863Snilay@cs.wisc.edu MessageSizeType_to_string(MessageSizeType(type))) 1329863Snilay@cs.wisc.edu .flags(Stats::nozero) 1339863Snilay@cs.wisc.edu ; 1349863Snilay@cs.wisc.edu m_msg_bytes[type] 1359863Snilay@cs.wisc.edu .name(name() + ".msg_bytes." + 1369863Snilay@cs.wisc.edu MessageSizeType_to_string(MessageSizeType(type))) 1379863Snilay@cs.wisc.edu .flags(Stats::nozero) 1389863Snilay@cs.wisc.edu ; 1399863Snilay@cs.wisc.edu 1409863Snilay@cs.wisc.edu for (unsigned int i = 0; i < m_throttles.size(); i++) { 1419863Snilay@cs.wisc.edu m_msg_counts[type] += m_throttles[i]->getMsgCount(type); 1427054Snate@binkert.org } 1439863Snilay@cs.wisc.edu m_msg_bytes[type] = m_msg_counts[type] * Stats::constant( 1449863Snilay@cs.wisc.edu Network::MessageSizeType_to_int(MessageSizeType(type))); 1456145Snate@binkert.org } 1466145Snate@binkert.org} 1476145Snate@binkert.org 1487054Snate@binkert.orgvoid 1499863Snilay@cs.wisc.eduSwitch::resetStats() 1506145Snate@binkert.org{ 1519858Snilay@cs.wisc.edu m_perfect_switch->clearStats(); 1527054Snate@binkert.org for (int i = 0; i < m_throttles.size(); i++) { 1539863Snilay@cs.wisc.edu m_throttles[i]->clearStats(); 1549863Snilay@cs.wisc.edu } 1559863Snilay@cs.wisc.edu} 1569863Snilay@cs.wisc.edu 1579863Snilay@cs.wisc.eduvoid 1589863Snilay@cs.wisc.eduSwitch::collateStats() 1599863Snilay@cs.wisc.edu{ 1609863Snilay@cs.wisc.edu m_perfect_switch->collateStats(); 1619863Snilay@cs.wisc.edu for (int i = 0; i < m_throttles.size(); i++) { 1629863Snilay@cs.wisc.edu m_throttles[i]->collateStats(); 1636145Snate@binkert.org } 1646145Snate@binkert.org} 1656145Snate@binkert.org 1667054Snate@binkert.orgvoid 1677054Snate@binkert.orgSwitch::print(std::ostream& out) const 1686145Snate@binkert.org{ 1697054Snate@binkert.org // FIXME printing 1707054Snate@binkert.org out << "[Switch]"; 1716145Snate@binkert.org} 1729354Snilay@cs.wisc.edu 1739302Snilay@cs.wisc.edubool 1749302Snilay@cs.wisc.eduSwitch::functionalRead(Packet *pkt) 1759302Snilay@cs.wisc.edu{ 1769302Snilay@cs.wisc.edu return false; 1779302Snilay@cs.wisc.edu} 1789302Snilay@cs.wisc.edu 1799302Snilay@cs.wisc.eduuint32_t 1809302Snilay@cs.wisc.eduSwitch::functionalWrite(Packet *pkt) 1819302Snilay@cs.wisc.edu{ 1829302Snilay@cs.wisc.edu // Access the buffers in the switch for performing a functional write 1839302Snilay@cs.wisc.edu uint32_t num_functional_writes = 0; 18411021Sjthestness@gmail.com for (unsigned int i = 0; i < m_port_buffers.size(); ++i) { 18511021Sjthestness@gmail.com num_functional_writes += m_port_buffers[i]->functionalWrite(pkt); 1869302Snilay@cs.wisc.edu } 1879302Snilay@cs.wisc.edu return num_functional_writes; 1889302Snilay@cs.wisc.edu} 1899274Snilay@cs.wisc.edu 1909274Snilay@cs.wisc.eduSwitch * 1919274Snilay@cs.wisc.eduSwitchParams::create() 1929274Snilay@cs.wisc.edu{ 1939274Snilay@cs.wisc.edu return new Switch(this); 1949274Snilay@cs.wisc.edu} 195