112396SRiken.Gohil@arm.com/* 212396SRiken.Gohil@arm.com * Copyright (c) 2012-2013, 2016-2017 ARM Limited 312396SRiken.Gohil@arm.com * All rights reserved 412396SRiken.Gohil@arm.com * 512396SRiken.Gohil@arm.com * The license below extends only to copyright in the software and shall 612396SRiken.Gohil@arm.com * not be construed as granting a license to any other intellectual 712396SRiken.Gohil@arm.com * property including but not limited to intellectual property relating 812396SRiken.Gohil@arm.com * to a hardware implementation of the functionality of the software 912396SRiken.Gohil@arm.com * licensed here under. You may use the software subject to the license 1012396SRiken.Gohil@arm.com * terms below provided that you ensure that this notice is replicated 1112396SRiken.Gohil@arm.com * unmodified and in its entirety in all distributions of the software, 1212396SRiken.Gohil@arm.com * modified or unmodified, in source code or in binary form. 1312396SRiken.Gohil@arm.com * 1412396SRiken.Gohil@arm.com * Redistribution and use in source and binary forms, with or without 1512396SRiken.Gohil@arm.com * modification, are permitted provided that the following conditions are 1612396SRiken.Gohil@arm.com * met: redistributions of source code must retain the above copyright 1712396SRiken.Gohil@arm.com * notice, this list of conditions and the following disclaimer; 1812396SRiken.Gohil@arm.com * redistributions in binary form must reproduce the above copyright 1912396SRiken.Gohil@arm.com * notice, this list of conditions and the following disclaimer in the 2012396SRiken.Gohil@arm.com * documentation and/or other materials provided with the distribution; 2112396SRiken.Gohil@arm.com * neither the name of the copyright holders nor the names of its 2212396SRiken.Gohil@arm.com * contributors may be used to endorse or promote products derived from 2312396SRiken.Gohil@arm.com * this software without specific prior written permission. 2412396SRiken.Gohil@arm.com * 2512396SRiken.Gohil@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2612396SRiken.Gohil@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2712396SRiken.Gohil@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2812396SRiken.Gohil@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2912396SRiken.Gohil@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3012396SRiken.Gohil@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3112396SRiken.Gohil@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3212396SRiken.Gohil@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3312396SRiken.Gohil@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3412396SRiken.Gohil@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3512396SRiken.Gohil@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3612396SRiken.Gohil@arm.com * 3712396SRiken.Gohil@arm.com * Authors: Thomas Grass 3812396SRiken.Gohil@arm.com * Andreas Hansson 3912396SRiken.Gohil@arm.com * Sascha Bischoff 4012396SRiken.Gohil@arm.com * Neha Agarwal 4112396SRiken.Gohil@arm.com */ 4212396SRiken.Gohil@arm.com 4312396SRiken.Gohil@arm.com#include "cpu/testers/traffic_gen/trace_gen.hh" 4412396SRiken.Gohil@arm.com 4512396SRiken.Gohil@arm.com#include <algorithm> 4612396SRiken.Gohil@arm.com 4712396SRiken.Gohil@arm.com#include "base/random.hh" 4812396SRiken.Gohil@arm.com#include "base/trace.hh" 4912396SRiken.Gohil@arm.com#include "debug/TrafficGen.hh" 5012396SRiken.Gohil@arm.com#include "proto/packet.pb.h" 5112396SRiken.Gohil@arm.com 5212396SRiken.Gohil@arm.comTraceGen::InputStream::InputStream(const std::string& filename) 5312396SRiken.Gohil@arm.com : trace(filename) 5412396SRiken.Gohil@arm.com{ 5512396SRiken.Gohil@arm.com init(); 5612396SRiken.Gohil@arm.com} 5712396SRiken.Gohil@arm.com 5812396SRiken.Gohil@arm.comvoid 5912396SRiken.Gohil@arm.comTraceGen::InputStream::init() 6012396SRiken.Gohil@arm.com{ 6112396SRiken.Gohil@arm.com // Create a protobuf message for the header and read it from the stream 6212396SRiken.Gohil@arm.com ProtoMessage::PacketHeader header_msg; 6312396SRiken.Gohil@arm.com if (!trace.read(header_msg)) { 6412396SRiken.Gohil@arm.com panic("Failed to read packet header from trace\n"); 6512396SRiken.Gohil@arm.com } else if (header_msg.tick_freq() != SimClock::Frequency) { 6612396SRiken.Gohil@arm.com panic("Trace was recorded with a different tick frequency %d\n", 6712396SRiken.Gohil@arm.com header_msg.tick_freq()); 6812396SRiken.Gohil@arm.com } 6912396SRiken.Gohil@arm.com} 7012396SRiken.Gohil@arm.com 7112396SRiken.Gohil@arm.comvoid 7212396SRiken.Gohil@arm.comTraceGen::InputStream::reset() 7312396SRiken.Gohil@arm.com{ 7412396SRiken.Gohil@arm.com trace.reset(); 7512396SRiken.Gohil@arm.com init(); 7612396SRiken.Gohil@arm.com} 7712396SRiken.Gohil@arm.com 7812396SRiken.Gohil@arm.combool 7912396SRiken.Gohil@arm.comTraceGen::InputStream::read(TraceElement& element) 8012396SRiken.Gohil@arm.com{ 8112396SRiken.Gohil@arm.com ProtoMessage::Packet pkt_msg; 8212396SRiken.Gohil@arm.com if (trace.read(pkt_msg)) { 8312396SRiken.Gohil@arm.com element.cmd = pkt_msg.cmd(); 8412396SRiken.Gohil@arm.com element.addr = pkt_msg.addr(); 8512396SRiken.Gohil@arm.com element.blocksize = pkt_msg.size(); 8612396SRiken.Gohil@arm.com element.tick = pkt_msg.tick(); 8712396SRiken.Gohil@arm.com element.flags = pkt_msg.has_flags() ? pkt_msg.flags() : 0; 8812396SRiken.Gohil@arm.com return true; 8912396SRiken.Gohil@arm.com } 9012396SRiken.Gohil@arm.com 9112396SRiken.Gohil@arm.com // We have reached the end of the file 9212396SRiken.Gohil@arm.com return false; 9312396SRiken.Gohil@arm.com} 9412396SRiken.Gohil@arm.com 9512396SRiken.Gohil@arm.comTick 9612396SRiken.Gohil@arm.comTraceGen::nextPacketTick(bool elastic, Tick delay) const 9712396SRiken.Gohil@arm.com{ 9812396SRiken.Gohil@arm.com if (traceComplete) { 9912396SRiken.Gohil@arm.com DPRINTF(TrafficGen, "No next tick as trace is finished\n"); 10012396SRiken.Gohil@arm.com // We are at the end of the file, thus we have no more data in 10112396SRiken.Gohil@arm.com // the trace Return MaxTick to signal that there will be no 10212396SRiken.Gohil@arm.com // more transactions in this active period for the state. 10312396SRiken.Gohil@arm.com return MaxTick; 10412396SRiken.Gohil@arm.com } 10512396SRiken.Gohil@arm.com 10612396SRiken.Gohil@arm.com assert(nextElement.isValid()); 10712396SRiken.Gohil@arm.com 10812396SRiken.Gohil@arm.com DPRINTF(TrafficGen, "Next packet tick is %d\n", tickOffset + 10912396SRiken.Gohil@arm.com nextElement.tick); 11012396SRiken.Gohil@arm.com 11112396SRiken.Gohil@arm.com // if the playback is supposed to be elastic, add the delay 11212396SRiken.Gohil@arm.com if (elastic) 11312396SRiken.Gohil@arm.com tickOffset += delay; 11412396SRiken.Gohil@arm.com 11512396SRiken.Gohil@arm.com return std::max(tickOffset + nextElement.tick, curTick()); 11612396SRiken.Gohil@arm.com} 11712396SRiken.Gohil@arm.com 11812396SRiken.Gohil@arm.comvoid 11912396SRiken.Gohil@arm.comTraceGen::enter() 12012396SRiken.Gohil@arm.com{ 12112396SRiken.Gohil@arm.com // update the trace offset to the time where the state was entered. 12212396SRiken.Gohil@arm.com tickOffset = curTick(); 12312396SRiken.Gohil@arm.com 12412396SRiken.Gohil@arm.com // clear everything 12512396SRiken.Gohil@arm.com currElement.clear(); 12612396SRiken.Gohil@arm.com 12712396SRiken.Gohil@arm.com // read the first element in the file and set the complete flag 12812396SRiken.Gohil@arm.com traceComplete = !trace.read(nextElement); 12912396SRiken.Gohil@arm.com} 13012396SRiken.Gohil@arm.com 13112396SRiken.Gohil@arm.comPacketPtr 13212396SRiken.Gohil@arm.comTraceGen::getNextPacket() 13312396SRiken.Gohil@arm.com{ 13412396SRiken.Gohil@arm.com // shift things one step forward 13512396SRiken.Gohil@arm.com currElement = nextElement; 13612396SRiken.Gohil@arm.com nextElement.clear(); 13712396SRiken.Gohil@arm.com 13812396SRiken.Gohil@arm.com // read the next element and set the complete flag 13912396SRiken.Gohil@arm.com traceComplete = !trace.read(nextElement); 14012396SRiken.Gohil@arm.com 14112396SRiken.Gohil@arm.com // it is the responsibility of the traceComplete flag to ensure we 14212396SRiken.Gohil@arm.com // always have a valid element here 14312396SRiken.Gohil@arm.com assert(currElement.isValid()); 14412396SRiken.Gohil@arm.com 14512396SRiken.Gohil@arm.com DPRINTF(TrafficGen, "TraceGen::getNextPacket: %c %d %d %d 0x%x\n", 14612396SRiken.Gohil@arm.com currElement.cmd.isRead() ? 'r' : 'w', 14712396SRiken.Gohil@arm.com currElement.addr, 14812396SRiken.Gohil@arm.com currElement.blocksize, 14912396SRiken.Gohil@arm.com currElement.tick, 15012396SRiken.Gohil@arm.com currElement.flags); 15112396SRiken.Gohil@arm.com 15212396SRiken.Gohil@arm.com PacketPtr pkt = getPacket(currElement.addr + addrOffset, 15312396SRiken.Gohil@arm.com currElement.blocksize, 15412396SRiken.Gohil@arm.com currElement.cmd, currElement.flags); 15512396SRiken.Gohil@arm.com 15612396SRiken.Gohil@arm.com if (!traceComplete) 15712396SRiken.Gohil@arm.com DPRINTF(TrafficGen, "nextElement: %c addr %d size %d tick %d (%d)\n", 15812396SRiken.Gohil@arm.com nextElement.cmd.isRead() ? 'r' : 'w', 15912396SRiken.Gohil@arm.com nextElement.addr, 16012396SRiken.Gohil@arm.com nextElement.blocksize, 16112396SRiken.Gohil@arm.com nextElement.tick + tickOffset, 16212396SRiken.Gohil@arm.com nextElement.tick); 16312396SRiken.Gohil@arm.com 16412396SRiken.Gohil@arm.com return pkt; 16512396SRiken.Gohil@arm.com} 16612396SRiken.Gohil@arm.com 16712396SRiken.Gohil@arm.comvoid 16812396SRiken.Gohil@arm.comTraceGen::exit() 16912396SRiken.Gohil@arm.com{ 17012396SRiken.Gohil@arm.com // Check if we reached the end of the trace file. If we did not 17112396SRiken.Gohil@arm.com // then we want to generate a warning stating that not the entire 17212396SRiken.Gohil@arm.com // trace was played. 17312396SRiken.Gohil@arm.com if (!traceComplete) { 17412396SRiken.Gohil@arm.com warn("Trace player %s was unable to replay the entire trace!\n", 17512396SRiken.Gohil@arm.com name()); 17612396SRiken.Gohil@arm.com } 17712396SRiken.Gohil@arm.com 17812396SRiken.Gohil@arm.com // Clear any flags and start over again from the beginning of the 17912396SRiken.Gohil@arm.com // file 18012396SRiken.Gohil@arm.com trace.reset(); 18112396SRiken.Gohil@arm.com} 182