Switch.cc revision 10301
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); 466145Snate@binkert.org} 476145Snate@binkert.org 486145Snate@binkert.orgSwitch::~Switch() 496145Snate@binkert.org{ 509858Snilay@cs.wisc.edu delete m_perfect_switch; 516145Snate@binkert.org 527054Snate@binkert.org // Delete throttles (one per output port) 537454Snate@binkert.org deletePointers(m_throttles); 546145Snate@binkert.org 557054Snate@binkert.org // Delete MessageBuffers 567454Snate@binkert.org deletePointers(m_buffers_to_free); 576145Snate@binkert.org} 586145Snate@binkert.org 597054Snate@binkert.orgvoid 609274Snilay@cs.wisc.eduSwitch::init() 619274Snilay@cs.wisc.edu{ 629274Snilay@cs.wisc.edu BasicRouter::init(); 639858Snilay@cs.wisc.edu m_perfect_switch->init(m_network_ptr); 649274Snilay@cs.wisc.edu} 659274Snilay@cs.wisc.edu 669274Snilay@cs.wisc.eduvoid 677454Snate@binkert.orgSwitch::addInPort(const vector<MessageBuffer*>& in) 686145Snate@binkert.org{ 699858Snilay@cs.wisc.edu m_perfect_switch->addInPort(in); 709508Snilay@cs.wisc.edu 719508Snilay@cs.wisc.edu for (int i = 0; i < in.size(); i++) { 729508Snilay@cs.wisc.edu in[i]->setReceiver(this); 739508Snilay@cs.wisc.edu } 746145Snate@binkert.org} 756145Snate@binkert.org 767054Snate@binkert.orgvoid 777454Snate@binkert.orgSwitch::addOutPort(const vector<MessageBuffer*>& out, 789499Snilay@cs.wisc.edu const NetDest& routing_table_entry, Cycles link_latency, int bw_multiplier) 796145Snate@binkert.org{ 807054Snate@binkert.org // Create a throttle 819274Snilay@cs.wisc.edu Throttle* throttle_ptr = new Throttle(m_id, m_throttles.size(), 829499Snilay@cs.wisc.edu link_latency, bw_multiplier, m_network_ptr->getEndpointBandwidth(), 839499Snilay@cs.wisc.edu this); 847454Snate@binkert.org m_throttles.push_back(throttle_ptr); 856145Snate@binkert.org 867054Snate@binkert.org // Create one buffer per vnet (these are intermediaryQueues) 877454Snate@binkert.org vector<MessageBuffer*> intermediateBuffers; 887054Snate@binkert.org for (int i = 0; i < out.size(); i++) { 899508Snilay@cs.wisc.edu out[i]->setSender(this); 909508Snilay@cs.wisc.edu 917054Snate@binkert.org MessageBuffer* buffer_ptr = new MessageBuffer; 927054Snate@binkert.org // Make these queues ordered 937054Snate@binkert.org buffer_ptr->setOrdering(true); 949274Snilay@cs.wisc.edu if (m_network_ptr->getBufferSize() > 0) { 959274Snilay@cs.wisc.edu buffer_ptr->resize(m_network_ptr->getBufferSize()); 967054Snate@binkert.org } 979508Snilay@cs.wisc.edu 987454Snate@binkert.org intermediateBuffers.push_back(buffer_ptr); 997454Snate@binkert.org m_buffers_to_free.push_back(buffer_ptr); 1009508Snilay@cs.wisc.edu 1019508Snilay@cs.wisc.edu buffer_ptr->setSender(this); 1029508Snilay@cs.wisc.edu buffer_ptr->setReceiver(this); 1039274Snilay@cs.wisc.edu } 1046145Snate@binkert.org 1057054Snate@binkert.org // Hook the queues to the PerfectSwitch 1069858Snilay@cs.wisc.edu m_perfect_switch->addOutPort(intermediateBuffers, routing_table_entry); 1076145Snate@binkert.org 1087054Snate@binkert.org // Hook the queues to the Throttle 1099508Snilay@cs.wisc.edu throttle_ptr->addLinks(intermediateBuffers, out); 1106145Snate@binkert.org} 1116145Snate@binkert.org 1127054Snate@binkert.orgconst Throttle* 1137054Snate@binkert.orgSwitch::getThrottle(LinkID link_number) const 1146145Snate@binkert.org{ 1157054Snate@binkert.org assert(m_throttles[link_number] != NULL); 1167054Snate@binkert.org return m_throttles[link_number]; 1176145Snate@binkert.org} 1186145Snate@binkert.org 1197054Snate@binkert.orgvoid 1209863Snilay@cs.wisc.eduSwitch::regStats() 1216145Snate@binkert.org{ 1229863Snilay@cs.wisc.edu for (int link = 0; link < m_throttles.size(); link++) { 1239863Snilay@cs.wisc.edu m_throttles[link]->regStats(name()); 1249863Snilay@cs.wisc.edu } 1256145Snate@binkert.org 1269863Snilay@cs.wisc.edu m_avg_utilization.name(name() + ".percent_links_utilized"); 1279863Snilay@cs.wisc.edu for (unsigned int i = 0; i < m_throttles.size(); i++) { 1289863Snilay@cs.wisc.edu m_avg_utilization += m_throttles[i]->getUtilization(); 1299863Snilay@cs.wisc.edu } 1309863Snilay@cs.wisc.edu m_avg_utilization /= Stats::constant(m_throttles.size()); 1316145Snate@binkert.org 1329863Snilay@cs.wisc.edu for (unsigned int type = MessageSizeType_FIRST; 1339863Snilay@cs.wisc.edu type < MessageSizeType_NUM; ++type) { 1349863Snilay@cs.wisc.edu m_msg_counts[type] 1359863Snilay@cs.wisc.edu .name(name() + ".msg_count." + 1369863Snilay@cs.wisc.edu MessageSizeType_to_string(MessageSizeType(type))) 1379863Snilay@cs.wisc.edu .flags(Stats::nozero) 1389863Snilay@cs.wisc.edu ; 1399863Snilay@cs.wisc.edu m_msg_bytes[type] 1409863Snilay@cs.wisc.edu .name(name() + ".msg_bytes." + 1419863Snilay@cs.wisc.edu MessageSizeType_to_string(MessageSizeType(type))) 1429863Snilay@cs.wisc.edu .flags(Stats::nozero) 1439863Snilay@cs.wisc.edu ; 1449863Snilay@cs.wisc.edu 1459863Snilay@cs.wisc.edu for (unsigned int i = 0; i < m_throttles.size(); i++) { 1469863Snilay@cs.wisc.edu m_msg_counts[type] += m_throttles[i]->getMsgCount(type); 1477054Snate@binkert.org } 1489863Snilay@cs.wisc.edu m_msg_bytes[type] = m_msg_counts[type] * Stats::constant( 1499863Snilay@cs.wisc.edu Network::MessageSizeType_to_int(MessageSizeType(type))); 1506145Snate@binkert.org } 1516145Snate@binkert.org} 1526145Snate@binkert.org 1537054Snate@binkert.orgvoid 1549863Snilay@cs.wisc.eduSwitch::resetStats() 1556145Snate@binkert.org{ 1569858Snilay@cs.wisc.edu m_perfect_switch->clearStats(); 1577054Snate@binkert.org for (int i = 0; i < m_throttles.size(); i++) { 1589863Snilay@cs.wisc.edu m_throttles[i]->clearStats(); 1599863Snilay@cs.wisc.edu } 1609863Snilay@cs.wisc.edu} 1619863Snilay@cs.wisc.edu 1629863Snilay@cs.wisc.eduvoid 1639863Snilay@cs.wisc.eduSwitch::collateStats() 1649863Snilay@cs.wisc.edu{ 1659863Snilay@cs.wisc.edu m_perfect_switch->collateStats(); 1669863Snilay@cs.wisc.edu for (int i = 0; i < m_throttles.size(); i++) { 1679863Snilay@cs.wisc.edu m_throttles[i]->collateStats(); 1686145Snate@binkert.org } 1696145Snate@binkert.org} 1706145Snate@binkert.org 1717054Snate@binkert.orgvoid 1727054Snate@binkert.orgSwitch::print(std::ostream& out) const 1736145Snate@binkert.org{ 1747054Snate@binkert.org // FIXME printing 1757054Snate@binkert.org out << "[Switch]"; 1766145Snate@binkert.org} 1779354Snilay@cs.wisc.edu 1789302Snilay@cs.wisc.edubool 1799302Snilay@cs.wisc.eduSwitch::functionalRead(Packet *pkt) 1809302Snilay@cs.wisc.edu{ 1819302Snilay@cs.wisc.edu // Access the buffers in the switch for performing a functional read 1829302Snilay@cs.wisc.edu for (unsigned int i = 0; i < m_buffers_to_free.size(); ++i) { 1839302Snilay@cs.wisc.edu if (m_buffers_to_free[i]->functionalRead(pkt)) { 1849302Snilay@cs.wisc.edu return true; 1859302Snilay@cs.wisc.edu } 1869302Snilay@cs.wisc.edu } 1879302Snilay@cs.wisc.edu return false; 1889302Snilay@cs.wisc.edu} 1899302Snilay@cs.wisc.edu 1909302Snilay@cs.wisc.eduuint32_t 1919302Snilay@cs.wisc.eduSwitch::functionalWrite(Packet *pkt) 1929302Snilay@cs.wisc.edu{ 1939302Snilay@cs.wisc.edu // Access the buffers in the switch for performing a functional write 1949302Snilay@cs.wisc.edu uint32_t num_functional_writes = 0; 1959302Snilay@cs.wisc.edu for (unsigned int i = 0; i < m_buffers_to_free.size(); ++i) { 1969302Snilay@cs.wisc.edu num_functional_writes += m_buffers_to_free[i]->functionalWrite(pkt); 1979302Snilay@cs.wisc.edu } 1989302Snilay@cs.wisc.edu return num_functional_writes; 1999302Snilay@cs.wisc.edu} 2009274Snilay@cs.wisc.edu 2019274Snilay@cs.wisc.eduSwitch * 2029274Snilay@cs.wisc.eduSwitchParams::create() 2039274Snilay@cs.wisc.edu{ 2049274Snilay@cs.wisc.edu return new Switch(this); 2059274Snilay@cs.wisc.edu} 206