comm_monitor.cc revision 10713
18981Sandreas.hansson@arm.com/* 29540Sandreas.hansson@armm.com * Copyright (c) 2012-2013 ARM Limited 38981Sandreas.hansson@arm.com * All rights reserved 48981Sandreas.hansson@arm.com * 58981Sandreas.hansson@arm.com * The license below extends only to copyright in the software and shall 68981Sandreas.hansson@arm.com * not be construed as granting a license to any other intellectual 78981Sandreas.hansson@arm.com * property including but not limited to intellectual property relating 88981Sandreas.hansson@arm.com * to a hardware implementation of the functionality of the software 98981Sandreas.hansson@arm.com * licensed hereunder. You may use the software subject to the license 108981Sandreas.hansson@arm.com * terms below provided that you ensure that this notice is replicated 118981Sandreas.hansson@arm.com * unmodified and in its entirety in all distributions of the software, 128981Sandreas.hansson@arm.com * modified or unmodified, in source code or in binary form. 138981Sandreas.hansson@arm.com * 148981Sandreas.hansson@arm.com * Redistribution and use in source and binary forms, with or without 158981Sandreas.hansson@arm.com * modification, are permitted provided that the following conditions are 168981Sandreas.hansson@arm.com * met: redistributions of source code must retain the above copyright 178981Sandreas.hansson@arm.com * notice, this list of conditions and the following disclaimer; 188981Sandreas.hansson@arm.com * redistributions in binary form must reproduce the above copyright 198981Sandreas.hansson@arm.com * notice, this list of conditions and the following disclaimer in the 208981Sandreas.hansson@arm.com * documentation and/or other materials provided with the distribution; 218981Sandreas.hansson@arm.com * neither the name of the copyright holders nor the names of its 228981Sandreas.hansson@arm.com * contributors may be used to endorse or promote products derived from 238981Sandreas.hansson@arm.com * this software without specific prior written permission. 248981Sandreas.hansson@arm.com * 258981Sandreas.hansson@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 268981Sandreas.hansson@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 278981Sandreas.hansson@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 288981Sandreas.hansson@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 298981Sandreas.hansson@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 308981Sandreas.hansson@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 318981Sandreas.hansson@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 328981Sandreas.hansson@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 338981Sandreas.hansson@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 348981Sandreas.hansson@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 358981Sandreas.hansson@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 368981Sandreas.hansson@arm.com * 378981Sandreas.hansson@arm.com * Authors: Thomas Grass 388981Sandreas.hansson@arm.com * Andreas Hansson 398981Sandreas.hansson@arm.com */ 408981Sandreas.hansson@arm.com 419398Sandreas.hansson@arm.com#include "base/callback.hh" 429398Sandreas.hansson@arm.com#include "base/output.hh" 439356Snilay@cs.wisc.edu#include "base/trace.hh" 448981Sandreas.hansson@arm.com#include "debug/CommMonitor.hh" 458981Sandreas.hansson@arm.com#include "mem/comm_monitor.hh" 469398Sandreas.hansson@arm.com#include "proto/packet.pb.h" 478981Sandreas.hansson@arm.com#include "sim/stats.hh" 488981Sandreas.hansson@arm.com 498981Sandreas.hansson@arm.comCommMonitor::CommMonitor(Params* params) 508981Sandreas.hansson@arm.com : MemObject(params), 518981Sandreas.hansson@arm.com masterPort(name() + "-master", *this), 528981Sandreas.hansson@arm.com slavePort(name() + "-slave", *this), 538981Sandreas.hansson@arm.com samplePeriodicEvent(this), 548981Sandreas.hansson@arm.com samplePeriodTicks(params->sample_period), 558981Sandreas.hansson@arm.com readAddrMask(params->read_addr_mask), 568981Sandreas.hansson@arm.com writeAddrMask(params->write_addr_mask), 579398Sandreas.hansson@arm.com stats(params), 5810615Skanishk.sugand@arm.com stackDistCalc(params->stack_dist_calc), 5910129SSascha.Bischoff@ARM.com traceStream(NULL), 6010129SSascha.Bischoff@ARM.com system(params->system) 618981Sandreas.hansson@arm.com{ 6210189Ssascha.bischoff@ARM.com // If we are using a trace file, then open the file 6310189Ssascha.bischoff@ARM.com if (params->trace_enable) { 6410189Ssascha.bischoff@ARM.com std::string filename; 6510189Ssascha.bischoff@ARM.com if (params->trace_file != "") { 6610189Ssascha.bischoff@ARM.com // If the trace file is not specified as an absolute path, 6710189Ssascha.bischoff@ARM.com // append the current simulation output directory 6810189Ssascha.bischoff@ARM.com filename = simout.resolve(params->trace_file); 6910189Ssascha.bischoff@ARM.com 7010189Ssascha.bischoff@ARM.com std::string suffix = ".gz"; 7110189Ssascha.bischoff@ARM.com // If trace_compress has been set, check the suffix. Append 7210189Ssascha.bischoff@ARM.com // accordingly. 7310189Ssascha.bischoff@ARM.com if (params->trace_compress && 7410189Ssascha.bischoff@ARM.com filename.compare(filename.size() - suffix.size(), suffix.size(), 7510189Ssascha.bischoff@ARM.com suffix) != 0) 7610189Ssascha.bischoff@ARM.com filename = filename + suffix; 7710189Ssascha.bischoff@ARM.com } else { 7810189Ssascha.bischoff@ARM.com // Generate a filename from the name of the SimObject. Append .trc 7910189Ssascha.bischoff@ARM.com // and .gz if we want compression enabled. 8010189Ssascha.bischoff@ARM.com filename = simout.resolve(name() + ".trc" + 8110189Ssascha.bischoff@ARM.com (params->trace_compress ? ".gz" : "")); 8210189Ssascha.bischoff@ARM.com } 8310189Ssascha.bischoff@ARM.com 849398Sandreas.hansson@arm.com traceStream = new ProtoOutputStream(filename); 859398Sandreas.hansson@arm.com 869398Sandreas.hansson@arm.com // Create a protobuf message for the header and write it to 879398Sandreas.hansson@arm.com // the stream 8810309Snilay@cs.wisc.edu ProtoMessage::PacketHeader header_msg; 899398Sandreas.hansson@arm.com header_msg.set_obj_id(name()); 909398Sandreas.hansson@arm.com header_msg.set_tick_freq(SimClock::Frequency); 919398Sandreas.hansson@arm.com traceStream->write(header_msg); 929398Sandreas.hansson@arm.com 939398Sandreas.hansson@arm.com // Register a callback to compensate for the destructor not 949398Sandreas.hansson@arm.com // being called. The callback forces the stream to flush and 959398Sandreas.hansson@arm.com // closes the output file. 969398Sandreas.hansson@arm.com Callback* cb = new MakeCallback<CommMonitor, 979398Sandreas.hansson@arm.com &CommMonitor::closeStreams>(this); 989398Sandreas.hansson@arm.com registerExitCallback(cb); 999398Sandreas.hansson@arm.com } 1009398Sandreas.hansson@arm.com 1018981Sandreas.hansson@arm.com // keep track of the sample period both in ticks and absolute time 1028981Sandreas.hansson@arm.com samplePeriod.setTick(params->sample_period); 1038981Sandreas.hansson@arm.com 1048981Sandreas.hansson@arm.com DPRINTF(CommMonitor, 10510064Sandreas.hansson@arm.com "Created monitor %s with sample period %d ticks (%f ms)\n", 10610064Sandreas.hansson@arm.com name(), samplePeriodTicks, samplePeriod.msec()); 1078981Sandreas.hansson@arm.com} 1088981Sandreas.hansson@arm.com 10910412Sandreas.hansson@arm.comCommMonitor::~CommMonitor() 11010412Sandreas.hansson@arm.com{ 11110412Sandreas.hansson@arm.com // if not already done, close the stream 11210412Sandreas.hansson@arm.com closeStreams(); 11310412Sandreas.hansson@arm.com} 11410412Sandreas.hansson@arm.com 1159398Sandreas.hansson@arm.comvoid 1169398Sandreas.hansson@arm.comCommMonitor::closeStreams() 1179398Sandreas.hansson@arm.com{ 1189398Sandreas.hansson@arm.com if (traceStream != NULL) 1199398Sandreas.hansson@arm.com delete traceStream; 1209398Sandreas.hansson@arm.com} 1219398Sandreas.hansson@arm.com 1228981Sandreas.hansson@arm.comCommMonitor* 1238981Sandreas.hansson@arm.comCommMonitorParams::create() 1248981Sandreas.hansson@arm.com{ 1258981Sandreas.hansson@arm.com return new CommMonitor(this); 1268981Sandreas.hansson@arm.com} 1278981Sandreas.hansson@arm.com 1288981Sandreas.hansson@arm.comvoid 1298981Sandreas.hansson@arm.comCommMonitor::init() 1308981Sandreas.hansson@arm.com{ 1318981Sandreas.hansson@arm.com // make sure both sides of the monitor are connected 1328981Sandreas.hansson@arm.com if (!slavePort.isConnected() || !masterPort.isConnected()) 1338981Sandreas.hansson@arm.com fatal("Communication monitor is not connected on both sides.\n"); 13410129SSascha.Bischoff@ARM.com 13510129SSascha.Bischoff@ARM.com if (traceStream != NULL) { 13610129SSascha.Bischoff@ARM.com // Check the memory mode. We only record something when in 13710129SSascha.Bischoff@ARM.com // timing mode. Warn accordingly. 13810129SSascha.Bischoff@ARM.com if (!system->isTimingMode()) 13910129SSascha.Bischoff@ARM.com warn("%s: Not in timing mode. No trace will be recorded.", name()); 14010129SSascha.Bischoff@ARM.com } 14110615Skanishk.sugand@arm.com 1428981Sandreas.hansson@arm.com} 1438981Sandreas.hansson@arm.com 1449294Sandreas.hansson@arm.comBaseMasterPort& 1459294Sandreas.hansson@arm.comCommMonitor::getMasterPort(const std::string& if_name, PortID idx) 1468981Sandreas.hansson@arm.com{ 1478981Sandreas.hansson@arm.com if (if_name == "master") { 1488981Sandreas.hansson@arm.com return masterPort; 1498981Sandreas.hansson@arm.com } else { 1508981Sandreas.hansson@arm.com return MemObject::getMasterPort(if_name, idx); 1518981Sandreas.hansson@arm.com } 1528981Sandreas.hansson@arm.com} 1538981Sandreas.hansson@arm.com 1549294Sandreas.hansson@arm.comBaseSlavePort& 1559294Sandreas.hansson@arm.comCommMonitor::getSlavePort(const std::string& if_name, PortID idx) 1568981Sandreas.hansson@arm.com{ 1578981Sandreas.hansson@arm.com if (if_name == "slave") { 1588981Sandreas.hansson@arm.com return slavePort; 1598981Sandreas.hansson@arm.com } else { 1608981Sandreas.hansson@arm.com return MemObject::getSlavePort(if_name, idx); 1618981Sandreas.hansson@arm.com } 1628981Sandreas.hansson@arm.com} 1638981Sandreas.hansson@arm.com 1648981Sandreas.hansson@arm.comvoid 1658981Sandreas.hansson@arm.comCommMonitor::recvFunctional(PacketPtr pkt) 1668981Sandreas.hansson@arm.com{ 1678981Sandreas.hansson@arm.com masterPort.sendFunctional(pkt); 1688981Sandreas.hansson@arm.com} 1698981Sandreas.hansson@arm.com 1708981Sandreas.hansson@arm.comvoid 1718981Sandreas.hansson@arm.comCommMonitor::recvFunctionalSnoop(PacketPtr pkt) 1728981Sandreas.hansson@arm.com{ 1738981Sandreas.hansson@arm.com slavePort.sendFunctionalSnoop(pkt); 1748981Sandreas.hansson@arm.com} 1758981Sandreas.hansson@arm.com 1768981Sandreas.hansson@arm.comTick 1778981Sandreas.hansson@arm.comCommMonitor::recvAtomic(PacketPtr pkt) 1788981Sandreas.hansson@arm.com{ 17910615Skanishk.sugand@arm.com // allow stack distance calculations for atomic if enabled 18010615Skanishk.sugand@arm.com if (stackDistCalc) 18110615Skanishk.sugand@arm.com stackDistCalc->update(pkt->cmd, pkt->getAddr()); 18210615Skanishk.sugand@arm.com 1838981Sandreas.hansson@arm.com return masterPort.sendAtomic(pkt); 1848981Sandreas.hansson@arm.com} 1858981Sandreas.hansson@arm.com 1868981Sandreas.hansson@arm.comTick 1878981Sandreas.hansson@arm.comCommMonitor::recvAtomicSnoop(PacketPtr pkt) 1888981Sandreas.hansson@arm.com{ 1898981Sandreas.hansson@arm.com return slavePort.sendAtomicSnoop(pkt); 1908981Sandreas.hansson@arm.com} 1918981Sandreas.hansson@arm.com 1928981Sandreas.hansson@arm.combool 1938981Sandreas.hansson@arm.comCommMonitor::recvTimingReq(PacketPtr pkt) 1948981Sandreas.hansson@arm.com{ 1958981Sandreas.hansson@arm.com // should always see a request 1968981Sandreas.hansson@arm.com assert(pkt->isRequest()); 1978981Sandreas.hansson@arm.com 1988981Sandreas.hansson@arm.com // Store relevant fields of packet, because packet may be modified 1998981Sandreas.hansson@arm.com // or even deleted when sendTiming() is called. 2009785Sandreas.hansson@arm.com bool is_read = pkt->isRead(); 2019785Sandreas.hansson@arm.com bool is_write = pkt->isWrite(); 20210615Skanishk.sugand@arm.com MemCmd cmd = pkt->cmd; 20310615Skanishk.sugand@arm.com int cmd_idx = pkt->cmdToIndex(); 2049609Sandreas.hansson@arm.com Request::FlagsType req_flags = pkt->req->getFlags(); 2058981Sandreas.hansson@arm.com unsigned size = pkt->getSize(); 2068981Sandreas.hansson@arm.com Addr addr = pkt->getAddr(); 2079785Sandreas.hansson@arm.com bool expects_response = pkt->needsResponse() && !pkt->memInhibitAsserted(); 2088981Sandreas.hansson@arm.com 2098981Sandreas.hansson@arm.com // If a cache miss is served by a cache, a monitor near the memory 2108981Sandreas.hansson@arm.com // would see a request which needs a response, but this response 2118981Sandreas.hansson@arm.com // would be inhibited and not come back from the memory. Therefore 2128981Sandreas.hansson@arm.com // we additionally have to check the inhibit flag. 2139785Sandreas.hansson@arm.com if (expects_response && !stats.disableLatencyHists) { 2149542Sandreas.hansson@arm.com pkt->pushSenderState(new CommMonitorSenderState(curTick())); 2158981Sandreas.hansson@arm.com } 2168981Sandreas.hansson@arm.com 2178981Sandreas.hansson@arm.com // Attempt to send the packet (always succeeds for inhibited 2188981Sandreas.hansson@arm.com // packets) 2198981Sandreas.hansson@arm.com bool successful = masterPort.sendTimingReq(pkt); 2208981Sandreas.hansson@arm.com 2218981Sandreas.hansson@arm.com // If not successful, restore the sender state 2229785Sandreas.hansson@arm.com if (!successful && expects_response && !stats.disableLatencyHists) { 2239542Sandreas.hansson@arm.com delete pkt->popSenderState(); 2248981Sandreas.hansson@arm.com } 2258981Sandreas.hansson@arm.com 22610615Skanishk.sugand@arm.com // If successful and we are calculating stack distances, update 22710615Skanishk.sugand@arm.com // the calculator 22810615Skanishk.sugand@arm.com if (successful && stackDistCalc) 22910615Skanishk.sugand@arm.com stackDistCalc->update(cmd, addr); 23010615Skanishk.sugand@arm.com 2319398Sandreas.hansson@arm.com if (successful && traceStream != NULL) { 2329398Sandreas.hansson@arm.com // Create a protobuf message representing the 2339398Sandreas.hansson@arm.com // packet. Currently we do not preserve the flags in the 2349398Sandreas.hansson@arm.com // trace. 23510309Snilay@cs.wisc.edu ProtoMessage::Packet pkt_msg; 2369398Sandreas.hansson@arm.com pkt_msg.set_tick(curTick()); 23710615Skanishk.sugand@arm.com pkt_msg.set_cmd(cmd_idx); 2389609Sandreas.hansson@arm.com pkt_msg.set_flags(req_flags); 2399540Sandreas.hansson@armm.com pkt_msg.set_addr(addr); 2409540Sandreas.hansson@armm.com pkt_msg.set_size(size); 2419398Sandreas.hansson@arm.com 2429398Sandreas.hansson@arm.com traceStream->write(pkt_msg); 2439398Sandreas.hansson@arm.com } 2449398Sandreas.hansson@arm.com 2459785Sandreas.hansson@arm.com if (successful && is_read) { 2468981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Forwarded read request\n"); 2478981Sandreas.hansson@arm.com 2488981Sandreas.hansson@arm.com // Increment number of observed read transactions 2498981Sandreas.hansson@arm.com if (!stats.disableTransactionHists) { 2508981Sandreas.hansson@arm.com ++stats.readTrans; 2518981Sandreas.hansson@arm.com } 2528981Sandreas.hansson@arm.com 2538981Sandreas.hansson@arm.com // Get sample of burst length 2548981Sandreas.hansson@arm.com if (!stats.disableBurstLengthHists) { 2558981Sandreas.hansson@arm.com stats.readBurstLengthHist.sample(size); 2568981Sandreas.hansson@arm.com } 2578981Sandreas.hansson@arm.com 2588981Sandreas.hansson@arm.com // Sample the masked address 2598981Sandreas.hansson@arm.com if (!stats.disableAddrDists) { 2608981Sandreas.hansson@arm.com stats.readAddrDist.sample(addr & readAddrMask); 2618981Sandreas.hansson@arm.com } 2628981Sandreas.hansson@arm.com 2638981Sandreas.hansson@arm.com // If it needs a response increment number of outstanding read 2648981Sandreas.hansson@arm.com // requests 2659785Sandreas.hansson@arm.com if (!stats.disableOutstandingHists && expects_response) { 2668981Sandreas.hansson@arm.com ++stats.outstandingReadReqs; 2678981Sandreas.hansson@arm.com } 2688981Sandreas.hansson@arm.com 2698981Sandreas.hansson@arm.com if (!stats.disableITTDists) { 2708981Sandreas.hansson@arm.com // Sample value of read-read inter transaction time 2718981Sandreas.hansson@arm.com if (stats.timeOfLastRead != 0) { 2728981Sandreas.hansson@arm.com stats.ittReadRead.sample(curTick() - stats.timeOfLastRead); 2738981Sandreas.hansson@arm.com } 2748981Sandreas.hansson@arm.com stats.timeOfLastRead = curTick(); 2758981Sandreas.hansson@arm.com 2768981Sandreas.hansson@arm.com // Sample value of req-req inter transaction time 2778981Sandreas.hansson@arm.com if (stats.timeOfLastReq != 0) { 2788981Sandreas.hansson@arm.com stats.ittReqReq.sample(curTick() - stats.timeOfLastReq); 2798981Sandreas.hansson@arm.com } 2808981Sandreas.hansson@arm.com stats.timeOfLastReq = curTick(); 2818981Sandreas.hansson@arm.com } 2829785Sandreas.hansson@arm.com } else if (successful && is_write) { 2838981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Forwarded write request\n"); 2848981Sandreas.hansson@arm.com 2858981Sandreas.hansson@arm.com // Same as for reads 2868981Sandreas.hansson@arm.com if (!stats.disableTransactionHists) { 2878981Sandreas.hansson@arm.com ++stats.writeTrans; 2888981Sandreas.hansson@arm.com } 2898981Sandreas.hansson@arm.com 2908981Sandreas.hansson@arm.com if (!stats.disableBurstLengthHists) { 2918981Sandreas.hansson@arm.com stats.writeBurstLengthHist.sample(size); 2928981Sandreas.hansson@arm.com } 2938981Sandreas.hansson@arm.com 2948981Sandreas.hansson@arm.com // Update the bandwidth stats on the request 2958981Sandreas.hansson@arm.com if (!stats.disableBandwidthHists) { 2968981Sandreas.hansson@arm.com stats.writtenBytes += size; 2978981Sandreas.hansson@arm.com stats.totalWrittenBytes += size; 2988981Sandreas.hansson@arm.com } 2998981Sandreas.hansson@arm.com 3008981Sandreas.hansson@arm.com // Sample the masked write address 3018981Sandreas.hansson@arm.com if (!stats.disableAddrDists) { 3028981Sandreas.hansson@arm.com stats.writeAddrDist.sample(addr & writeAddrMask); 3038981Sandreas.hansson@arm.com } 3048981Sandreas.hansson@arm.com 3059785Sandreas.hansson@arm.com if (!stats.disableOutstandingHists && expects_response) { 3068981Sandreas.hansson@arm.com ++stats.outstandingWriteReqs; 3078981Sandreas.hansson@arm.com } 3088981Sandreas.hansson@arm.com 3098981Sandreas.hansson@arm.com if (!stats.disableITTDists) { 3108981Sandreas.hansson@arm.com // Sample value of write-to-write inter transaction time 3118981Sandreas.hansson@arm.com if (stats.timeOfLastWrite != 0) { 3128981Sandreas.hansson@arm.com stats.ittWriteWrite.sample(curTick() - stats.timeOfLastWrite); 3138981Sandreas.hansson@arm.com } 3148981Sandreas.hansson@arm.com stats.timeOfLastWrite = curTick(); 3158981Sandreas.hansson@arm.com 3168981Sandreas.hansson@arm.com // Sample value of req-to-req inter transaction time 3178981Sandreas.hansson@arm.com if (stats.timeOfLastReq != 0) { 3188981Sandreas.hansson@arm.com stats.ittReqReq.sample(curTick() - stats.timeOfLastReq); 3198981Sandreas.hansson@arm.com } 3208981Sandreas.hansson@arm.com stats.timeOfLastReq = curTick(); 3218981Sandreas.hansson@arm.com } 3228981Sandreas.hansson@arm.com } else if (successful) { 3238981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Forwarded non read/write request\n"); 3248981Sandreas.hansson@arm.com } 3258981Sandreas.hansson@arm.com 3268981Sandreas.hansson@arm.com return successful; 3278981Sandreas.hansson@arm.com} 3288981Sandreas.hansson@arm.com 3298981Sandreas.hansson@arm.combool 3308981Sandreas.hansson@arm.comCommMonitor::recvTimingResp(PacketPtr pkt) 3318981Sandreas.hansson@arm.com{ 3328981Sandreas.hansson@arm.com // should always see responses 3338981Sandreas.hansson@arm.com assert(pkt->isResponse()); 3348981Sandreas.hansson@arm.com 3358981Sandreas.hansson@arm.com // Store relevant fields of packet, because packet may be modified 3368981Sandreas.hansson@arm.com // or even deleted when sendTiming() is called. 3379785Sandreas.hansson@arm.com bool is_read = pkt->isRead(); 3389785Sandreas.hansson@arm.com bool is_write = pkt->isWrite(); 3398981Sandreas.hansson@arm.com unsigned size = pkt->getSize(); 3408981Sandreas.hansson@arm.com Tick latency = 0; 3419785Sandreas.hansson@arm.com CommMonitorSenderState* received_state = 3428981Sandreas.hansson@arm.com dynamic_cast<CommMonitorSenderState*>(pkt->senderState); 3438981Sandreas.hansson@arm.com 3448981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 3458981Sandreas.hansson@arm.com // Restore initial sender state 3469785Sandreas.hansson@arm.com if (received_state == NULL) 3478981Sandreas.hansson@arm.com panic("Monitor got a response without monitor sender state\n"); 3488981Sandreas.hansson@arm.com 3498981Sandreas.hansson@arm.com // Restore the sate 3509785Sandreas.hansson@arm.com pkt->senderState = received_state->predecessor; 3518981Sandreas.hansson@arm.com } 3528981Sandreas.hansson@arm.com 3538981Sandreas.hansson@arm.com // Attempt to send the packet 3548981Sandreas.hansson@arm.com bool successful = slavePort.sendTimingResp(pkt); 3558981Sandreas.hansson@arm.com 3568981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 3578981Sandreas.hansson@arm.com // If packet successfully send, sample value of latency, 3588981Sandreas.hansson@arm.com // afterwards delete sender state, otherwise restore state 3598981Sandreas.hansson@arm.com if (successful) { 3609785Sandreas.hansson@arm.com latency = curTick() - received_state->transmitTime; 3618981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Latency: %d\n", latency); 3629785Sandreas.hansson@arm.com delete received_state; 3638981Sandreas.hansson@arm.com } else { 3648981Sandreas.hansson@arm.com // Don't delete anything and let the packet look like we 3658981Sandreas.hansson@arm.com // did not touch it 3669785Sandreas.hansson@arm.com pkt->senderState = received_state; 3678981Sandreas.hansson@arm.com } 3688981Sandreas.hansson@arm.com } 3698981Sandreas.hansson@arm.com 3709785Sandreas.hansson@arm.com if (successful && is_read) { 3718981Sandreas.hansson@arm.com // Decrement number of outstanding read requests 3728981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Received read response\n"); 3738981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists) { 3748981Sandreas.hansson@arm.com assert(stats.outstandingReadReqs != 0); 3758981Sandreas.hansson@arm.com --stats.outstandingReadReqs; 3768981Sandreas.hansson@arm.com } 3778981Sandreas.hansson@arm.com 3788981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 3798981Sandreas.hansson@arm.com stats.readLatencyHist.sample(latency); 3808981Sandreas.hansson@arm.com } 3818981Sandreas.hansson@arm.com 3828981Sandreas.hansson@arm.com // Update the bandwidth stats based on responses for reads 3838981Sandreas.hansson@arm.com if (!stats.disableBandwidthHists) { 3848981Sandreas.hansson@arm.com stats.readBytes += size; 3858981Sandreas.hansson@arm.com stats.totalReadBytes += size; 3868981Sandreas.hansson@arm.com } 3878981Sandreas.hansson@arm.com 3889785Sandreas.hansson@arm.com } else if (successful && is_write) { 3898981Sandreas.hansson@arm.com // Decrement number of outstanding write requests 3908981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Received write response\n"); 3918981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists) { 3928981Sandreas.hansson@arm.com assert(stats.outstandingWriteReqs != 0); 3938981Sandreas.hansson@arm.com --stats.outstandingWriteReqs; 3948981Sandreas.hansson@arm.com } 3958981Sandreas.hansson@arm.com 3968981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 3978981Sandreas.hansson@arm.com stats.writeLatencyHist.sample(latency); 3988981Sandreas.hansson@arm.com } 3998981Sandreas.hansson@arm.com } else if (successful) { 4008981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Received non read/write response\n"); 4018981Sandreas.hansson@arm.com } 4028981Sandreas.hansson@arm.com return successful; 4038981Sandreas.hansson@arm.com} 4048981Sandreas.hansson@arm.com 4058981Sandreas.hansson@arm.comvoid 4068981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopReq(PacketPtr pkt) 4078981Sandreas.hansson@arm.com{ 4088981Sandreas.hansson@arm.com slavePort.sendTimingSnoopReq(pkt); 4098981Sandreas.hansson@arm.com} 4108981Sandreas.hansson@arm.com 4118981Sandreas.hansson@arm.combool 4128981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopResp(PacketPtr pkt) 4138981Sandreas.hansson@arm.com{ 4148981Sandreas.hansson@arm.com return masterPort.sendTimingSnoopResp(pkt); 4158981Sandreas.hansson@arm.com} 4168981Sandreas.hansson@arm.com 4178981Sandreas.hansson@arm.combool 4188981Sandreas.hansson@arm.comCommMonitor::isSnooping() const 4198981Sandreas.hansson@arm.com{ 4209088Sandreas.hansson@arm.com // check if the connected master port is snooping 4219088Sandreas.hansson@arm.com return slavePort.isSnooping(); 4228981Sandreas.hansson@arm.com} 4238981Sandreas.hansson@arm.com 4248981Sandreas.hansson@arm.comAddrRangeList 4259090Sandreas.hansson@arm.comCommMonitor::getAddrRanges() const 4268981Sandreas.hansson@arm.com{ 4279089Sandreas.hansson@arm.com // get the address ranges of the connected slave port 4289089Sandreas.hansson@arm.com return masterPort.getAddrRanges(); 4298981Sandreas.hansson@arm.com} 4308981Sandreas.hansson@arm.com 4318981Sandreas.hansson@arm.comvoid 43210713Sandreas.hansson@arm.comCommMonitor::recvReqRetry() 4338981Sandreas.hansson@arm.com{ 43410713Sandreas.hansson@arm.com slavePort.sendRetryReq(); 4358981Sandreas.hansson@arm.com} 4368981Sandreas.hansson@arm.com 4378981Sandreas.hansson@arm.comvoid 43810713Sandreas.hansson@arm.comCommMonitor::recvRespRetry() 4398981Sandreas.hansson@arm.com{ 44010713Sandreas.hansson@arm.com masterPort.sendRetryResp(); 4418981Sandreas.hansson@arm.com} 4428981Sandreas.hansson@arm.com 4438981Sandreas.hansson@arm.comvoid 4448981Sandreas.hansson@arm.comCommMonitor::recvRangeChange() 4458981Sandreas.hansson@arm.com{ 4468981Sandreas.hansson@arm.com slavePort.sendRangeChange(); 4478981Sandreas.hansson@arm.com} 4488981Sandreas.hansson@arm.com 4498981Sandreas.hansson@arm.comvoid 4508981Sandreas.hansson@arm.comCommMonitor::regStats() 4518981Sandreas.hansson@arm.com{ 4528981Sandreas.hansson@arm.com // Initialise all the monitor stats 4538981Sandreas.hansson@arm.com using namespace Stats; 4548981Sandreas.hansson@arm.com 4558981Sandreas.hansson@arm.com stats.readBurstLengthHist 4568981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 4578981Sandreas.hansson@arm.com .name(name() + ".readBurstLengthHist") 4588981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 4598981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 4608981Sandreas.hansson@arm.com 4618981Sandreas.hansson@arm.com stats.writeBurstLengthHist 4628981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 4638981Sandreas.hansson@arm.com .name(name() + ".writeBurstLengthHist") 4648981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 4658981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 4668981Sandreas.hansson@arm.com 4678981Sandreas.hansson@arm.com // Stats based on received responses 4688981Sandreas.hansson@arm.com stats.readBandwidthHist 4698981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 4708981Sandreas.hansson@arm.com .name(name() + ".readBandwidthHist") 4718981Sandreas.hansson@arm.com .desc("Histogram of read bandwidth per sample period (bytes/s)") 4728981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4738981Sandreas.hansson@arm.com 4748981Sandreas.hansson@arm.com stats.averageReadBW 4758981Sandreas.hansson@arm.com .name(name() + ".averageReadBandwidth") 4768981Sandreas.hansson@arm.com .desc("Average read bandwidth (bytes/s)") 4778981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4788981Sandreas.hansson@arm.com 4798981Sandreas.hansson@arm.com stats.totalReadBytes 4808981Sandreas.hansson@arm.com .name(name() + ".totalReadBytes") 4818981Sandreas.hansson@arm.com .desc("Number of bytes read") 4828981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4838981Sandreas.hansson@arm.com 4848981Sandreas.hansson@arm.com stats.averageReadBW = stats.totalReadBytes / simSeconds; 4858981Sandreas.hansson@arm.com 4868981Sandreas.hansson@arm.com // Stats based on successfully sent requests 4878981Sandreas.hansson@arm.com stats.writeBandwidthHist 4888981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 4898981Sandreas.hansson@arm.com .name(name() + ".writeBandwidthHist") 4908981Sandreas.hansson@arm.com .desc("Histogram of write bandwidth (bytes/s)") 4918981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? (pdf | nozero) : pdf); 4928981Sandreas.hansson@arm.com 4938981Sandreas.hansson@arm.com stats.averageWriteBW 4948981Sandreas.hansson@arm.com .name(name() + ".averageWriteBandwidth") 4958981Sandreas.hansson@arm.com .desc("Average write bandwidth (bytes/s)") 4968981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4978981Sandreas.hansson@arm.com 4988981Sandreas.hansson@arm.com stats.totalWrittenBytes 4998981Sandreas.hansson@arm.com .name(name() + ".totalWrittenBytes") 5008981Sandreas.hansson@arm.com .desc("Number of bytes written") 5018981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 5028981Sandreas.hansson@arm.com 5038981Sandreas.hansson@arm.com stats.averageWriteBW = stats.totalWrittenBytes / simSeconds; 5048981Sandreas.hansson@arm.com 5058981Sandreas.hansson@arm.com stats.readLatencyHist 5068981Sandreas.hansson@arm.com .init(params()->latency_bins) 5078981Sandreas.hansson@arm.com .name(name() + ".readLatencyHist") 5088981Sandreas.hansson@arm.com .desc("Read request-response latency") 5098981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 5108981Sandreas.hansson@arm.com 5118981Sandreas.hansson@arm.com stats.writeLatencyHist 5128981Sandreas.hansson@arm.com .init(params()->latency_bins) 5138981Sandreas.hansson@arm.com .name(name() + ".writeLatencyHist") 5148981Sandreas.hansson@arm.com .desc("Write request-response latency") 5158981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 5168981Sandreas.hansson@arm.com 5178981Sandreas.hansson@arm.com stats.ittReadRead 5188981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 5198981Sandreas.hansson@arm.com params()->itt_bins) 5208981Sandreas.hansson@arm.com .name(name() + ".ittReadRead") 5218981Sandreas.hansson@arm.com .desc("Read-to-read inter transaction time") 5228981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 5238981Sandreas.hansson@arm.com 5248981Sandreas.hansson@arm.com stats.ittWriteWrite 5258981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 5268981Sandreas.hansson@arm.com params()->itt_bins) 5278981Sandreas.hansson@arm.com .name(name() + ".ittWriteWrite") 5288981Sandreas.hansson@arm.com .desc("Write-to-write inter transaction time") 5298981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 5308981Sandreas.hansson@arm.com 5318981Sandreas.hansson@arm.com stats.ittReqReq 5328981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 5338981Sandreas.hansson@arm.com params()->itt_bins) 5348981Sandreas.hansson@arm.com .name(name() + ".ittReqReq") 5358981Sandreas.hansson@arm.com .desc("Request-to-request inter transaction time") 5368981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 5378981Sandreas.hansson@arm.com 5388981Sandreas.hansson@arm.com stats.outstandingReadsHist 5398981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 5408981Sandreas.hansson@arm.com .name(name() + ".outstandingReadsHist") 5418981Sandreas.hansson@arm.com .desc("Outstanding read transactions") 5428981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 5438981Sandreas.hansson@arm.com 5448981Sandreas.hansson@arm.com stats.outstandingWritesHist 5458981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 5468981Sandreas.hansson@arm.com .name(name() + ".outstandingWritesHist") 5478981Sandreas.hansson@arm.com .desc("Outstanding write transactions") 5488981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 5498981Sandreas.hansson@arm.com 5508981Sandreas.hansson@arm.com stats.readTransHist 5518981Sandreas.hansson@arm.com .init(params()->transaction_bins) 5528981Sandreas.hansson@arm.com .name(name() + ".readTransHist") 5538981Sandreas.hansson@arm.com .desc("Histogram of read transactions per sample period") 5548981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 5558981Sandreas.hansson@arm.com 5568981Sandreas.hansson@arm.com stats.writeTransHist 5578981Sandreas.hansson@arm.com .init(params()->transaction_bins) 5588981Sandreas.hansson@arm.com .name(name() + ".writeTransHist") 5598981Sandreas.hansson@arm.com .desc("Histogram of read transactions per sample period") 5608981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 5618981Sandreas.hansson@arm.com 5628981Sandreas.hansson@arm.com stats.readAddrDist 5638981Sandreas.hansson@arm.com .init(0) 5648981Sandreas.hansson@arm.com .name(name() + ".readAddrDist") 5658981Sandreas.hansson@arm.com .desc("Read address distribution") 5668981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 5678981Sandreas.hansson@arm.com 5688981Sandreas.hansson@arm.com stats.writeAddrDist 5698981Sandreas.hansson@arm.com .init(0) 5708981Sandreas.hansson@arm.com .name(name() + ".writeAddrDist") 5718981Sandreas.hansson@arm.com .desc("Write address distribution") 5728981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 5738981Sandreas.hansson@arm.com} 5748981Sandreas.hansson@arm.com 5758981Sandreas.hansson@arm.comvoid 5768981Sandreas.hansson@arm.comCommMonitor::samplePeriodic() 5778981Sandreas.hansson@arm.com{ 5788981Sandreas.hansson@arm.com // the periodic stats update runs on the granularity of sample 5798981Sandreas.hansson@arm.com // periods, but in combination with this there may also be a 5808981Sandreas.hansson@arm.com // external resets and dumps of the stats (through schedStatEvent) 5818981Sandreas.hansson@arm.com // causing the stats themselves to capture less than a sample 5828981Sandreas.hansson@arm.com // period 5838981Sandreas.hansson@arm.com 5848981Sandreas.hansson@arm.com // only capture if we have not reset the stats during the last 5858981Sandreas.hansson@arm.com // sample period 5868981Sandreas.hansson@arm.com if (simTicks.value() >= samplePeriodTicks) { 5878981Sandreas.hansson@arm.com if (!stats.disableTransactionHists) { 5888981Sandreas.hansson@arm.com stats.readTransHist.sample(stats.readTrans); 5898981Sandreas.hansson@arm.com stats.writeTransHist.sample(stats.writeTrans); 5908981Sandreas.hansson@arm.com } 5918981Sandreas.hansson@arm.com 5928981Sandreas.hansson@arm.com if (!stats.disableBandwidthHists) { 5938981Sandreas.hansson@arm.com stats.readBandwidthHist.sample(stats.readBytes / samplePeriod); 5948981Sandreas.hansson@arm.com stats.writeBandwidthHist.sample(stats.writtenBytes / samplePeriod); 5958981Sandreas.hansson@arm.com } 5968981Sandreas.hansson@arm.com 5978981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists) { 5988981Sandreas.hansson@arm.com stats.outstandingReadsHist.sample(stats.outstandingReadReqs); 5998981Sandreas.hansson@arm.com stats.outstandingWritesHist.sample(stats.outstandingWriteReqs); 6008981Sandreas.hansson@arm.com } 6018981Sandreas.hansson@arm.com } 6028981Sandreas.hansson@arm.com 6038981Sandreas.hansson@arm.com // reset the sampled values 6048981Sandreas.hansson@arm.com stats.readTrans = 0; 6058981Sandreas.hansson@arm.com stats.writeTrans = 0; 6068981Sandreas.hansson@arm.com 6078981Sandreas.hansson@arm.com stats.readBytes = 0; 6088981Sandreas.hansson@arm.com stats.writtenBytes = 0; 6098981Sandreas.hansson@arm.com 6108981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 6118981Sandreas.hansson@arm.com} 6128981Sandreas.hansson@arm.com 6138981Sandreas.hansson@arm.comvoid 6148981Sandreas.hansson@arm.comCommMonitor::startup() 6158981Sandreas.hansson@arm.com{ 6168981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 6178981Sandreas.hansson@arm.com} 618