comm_monitor.cc revision 11804
18981Sandreas.hansson@arm.com/* 210744SGeoffrey.Blake@arm.com * Copyright (c) 2012-2013, 2015 ARM Limited 311804Srjthakur@google.com * Copyright (c) 2016 Google Inc. 411804Srjthakur@google.com * All rights reserved. 58981Sandreas.hansson@arm.com * 68981Sandreas.hansson@arm.com * The license below extends only to copyright in the software and shall 78981Sandreas.hansson@arm.com * not be construed as granting a license to any other intellectual 88981Sandreas.hansson@arm.com * property including but not limited to intellectual property relating 98981Sandreas.hansson@arm.com * to a hardware implementation of the functionality of the software 108981Sandreas.hansson@arm.com * licensed hereunder. You may use the software subject to the license 118981Sandreas.hansson@arm.com * terms below provided that you ensure that this notice is replicated 128981Sandreas.hansson@arm.com * unmodified and in its entirety in all distributions of the software, 138981Sandreas.hansson@arm.com * modified or unmodified, in source code or in binary form. 148981Sandreas.hansson@arm.com * 158981Sandreas.hansson@arm.com * Redistribution and use in source and binary forms, with or without 168981Sandreas.hansson@arm.com * modification, are permitted provided that the following conditions are 178981Sandreas.hansson@arm.com * met: redistributions of source code must retain the above copyright 188981Sandreas.hansson@arm.com * notice, this list of conditions and the following disclaimer; 198981Sandreas.hansson@arm.com * redistributions in binary form must reproduce the above copyright 208981Sandreas.hansson@arm.com * notice, this list of conditions and the following disclaimer in the 218981Sandreas.hansson@arm.com * documentation and/or other materials provided with the distribution; 228981Sandreas.hansson@arm.com * neither the name of the copyright holders nor the names of its 238981Sandreas.hansson@arm.com * contributors may be used to endorse or promote products derived from 248981Sandreas.hansson@arm.com * this software without specific prior written permission. 258981Sandreas.hansson@arm.com * 268981Sandreas.hansson@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 278981Sandreas.hansson@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 288981Sandreas.hansson@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 298981Sandreas.hansson@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 308981Sandreas.hansson@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 318981Sandreas.hansson@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 328981Sandreas.hansson@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 338981Sandreas.hansson@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 348981Sandreas.hansson@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 358981Sandreas.hansson@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 368981Sandreas.hansson@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 378981Sandreas.hansson@arm.com * 388981Sandreas.hansson@arm.com * Authors: Thomas Grass 398981Sandreas.hansson@arm.com * Andreas Hansson 4011804Srjthakur@google.com * Rahul Thakur 418981Sandreas.hansson@arm.com */ 428981Sandreas.hansson@arm.com 4311793Sbrandon.potter@amd.com#include "mem/comm_monitor.hh" 4411793Sbrandon.potter@amd.com 459356Snilay@cs.wisc.edu#include "base/trace.hh" 468981Sandreas.hansson@arm.com#include "debug/CommMonitor.hh" 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), 5510902Sandreas.sandberg@arm.com samplePeriod(params->sample_period / SimClock::Float::s), 5610902Sandreas.sandberg@arm.com stats(params) 578981Sandreas.hansson@arm.com{ 588981Sandreas.hansson@arm.com DPRINTF(CommMonitor, 5910064Sandreas.hansson@arm.com "Created monitor %s with sample period %d ticks (%f ms)\n", 6010902Sandreas.sandberg@arm.com name(), samplePeriodTicks, samplePeriod * 1E3); 618981Sandreas.hansson@arm.com} 628981Sandreas.hansson@arm.com 638981Sandreas.hansson@arm.comCommMonitor* 648981Sandreas.hansson@arm.comCommMonitorParams::create() 658981Sandreas.hansson@arm.com{ 668981Sandreas.hansson@arm.com return new CommMonitor(this); 678981Sandreas.hansson@arm.com} 688981Sandreas.hansson@arm.com 698981Sandreas.hansson@arm.comvoid 708981Sandreas.hansson@arm.comCommMonitor::init() 718981Sandreas.hansson@arm.com{ 728981Sandreas.hansson@arm.com // make sure both sides of the monitor are connected 738981Sandreas.hansson@arm.com if (!slavePort.isConnected() || !masterPort.isConnected()) 748981Sandreas.hansson@arm.com fatal("Communication monitor is not connected on both sides.\n"); 758981Sandreas.hansson@arm.com} 768981Sandreas.hansson@arm.com 7710994Sandreas.sandberg@arm.comvoid 7810994Sandreas.sandberg@arm.comCommMonitor::regProbePoints() 7910994Sandreas.sandberg@arm.com{ 8010994Sandreas.sandberg@arm.com ppPktReq.reset(new ProbePoints::Packet(getProbeManager(), "PktRequest")); 8110994Sandreas.sandberg@arm.com ppPktResp.reset(new ProbePoints::Packet(getProbeManager(), "PktResponse")); 8210994Sandreas.sandberg@arm.com} 8310994Sandreas.sandberg@arm.com 849294Sandreas.hansson@arm.comBaseMasterPort& 859294Sandreas.hansson@arm.comCommMonitor::getMasterPort(const std::string& if_name, PortID idx) 868981Sandreas.hansson@arm.com{ 878981Sandreas.hansson@arm.com if (if_name == "master") { 888981Sandreas.hansson@arm.com return masterPort; 898981Sandreas.hansson@arm.com } else { 908981Sandreas.hansson@arm.com return MemObject::getMasterPort(if_name, idx); 918981Sandreas.hansson@arm.com } 928981Sandreas.hansson@arm.com} 938981Sandreas.hansson@arm.com 949294Sandreas.hansson@arm.comBaseSlavePort& 959294Sandreas.hansson@arm.comCommMonitor::getSlavePort(const std::string& if_name, PortID idx) 968981Sandreas.hansson@arm.com{ 978981Sandreas.hansson@arm.com if (if_name == "slave") { 988981Sandreas.hansson@arm.com return slavePort; 998981Sandreas.hansson@arm.com } else { 1008981Sandreas.hansson@arm.com return MemObject::getSlavePort(if_name, idx); 1018981Sandreas.hansson@arm.com } 1028981Sandreas.hansson@arm.com} 1038981Sandreas.hansson@arm.com 1048981Sandreas.hansson@arm.comvoid 1058981Sandreas.hansson@arm.comCommMonitor::recvFunctional(PacketPtr pkt) 1068981Sandreas.hansson@arm.com{ 1078981Sandreas.hansson@arm.com masterPort.sendFunctional(pkt); 1088981Sandreas.hansson@arm.com} 1098981Sandreas.hansson@arm.com 1108981Sandreas.hansson@arm.comvoid 1118981Sandreas.hansson@arm.comCommMonitor::recvFunctionalSnoop(PacketPtr pkt) 1128981Sandreas.hansson@arm.com{ 1138981Sandreas.hansson@arm.com slavePort.sendFunctionalSnoop(pkt); 1148981Sandreas.hansson@arm.com} 1158981Sandreas.hansson@arm.com 11611804Srjthakur@google.comvoid 11711804Srjthakur@google.comCommMonitor::MonitorStats::updateReqStats( 11811804Srjthakur@google.com const ProbePoints::PacketInfo& pkt_info, bool is_atomic, 11911804Srjthakur@google.com bool expects_response) 12011804Srjthakur@google.com{ 12111804Srjthakur@google.com if (pkt_info.cmd.isRead()) { 12211804Srjthakur@google.com // Increment number of observed read transactions 12311804Srjthakur@google.com if (!disableTransactionHists) 12411804Srjthakur@google.com ++readTrans; 12511804Srjthakur@google.com 12611804Srjthakur@google.com // Get sample of burst length 12711804Srjthakur@google.com if (!disableBurstLengthHists) 12811804Srjthakur@google.com readBurstLengthHist.sample(pkt_info.size); 12911804Srjthakur@google.com 13011804Srjthakur@google.com // Sample the masked address 13111804Srjthakur@google.com if (!disableAddrDists) 13211804Srjthakur@google.com readAddrDist.sample(pkt_info.addr & readAddrMask); 13311804Srjthakur@google.com 13411804Srjthakur@google.com if (!disableITTDists) { 13511804Srjthakur@google.com // Sample value of read-read inter transaction time 13611804Srjthakur@google.com if (timeOfLastRead != 0) 13711804Srjthakur@google.com ittReadRead.sample(curTick() - timeOfLastRead); 13811804Srjthakur@google.com timeOfLastRead = curTick(); 13911804Srjthakur@google.com 14011804Srjthakur@google.com // Sample value of req-req inter transaction time 14111804Srjthakur@google.com if (timeOfLastReq != 0) 14211804Srjthakur@google.com ittReqReq.sample(curTick() - timeOfLastReq); 14311804Srjthakur@google.com timeOfLastReq = curTick(); 14411804Srjthakur@google.com } 14511804Srjthakur@google.com if (!is_atomic && !disableOutstandingHists && expects_response) 14611804Srjthakur@google.com ++outstandingReadReqs; 14711804Srjthakur@google.com 14811804Srjthakur@google.com } else if (pkt_info.cmd.isWrite()) { 14911804Srjthakur@google.com // Same as for reads 15011804Srjthakur@google.com if (!disableTransactionHists) 15111804Srjthakur@google.com ++writeTrans; 15211804Srjthakur@google.com 15311804Srjthakur@google.com if (!disableBurstLengthHists) 15411804Srjthakur@google.com writeBurstLengthHist.sample(pkt_info.size); 15511804Srjthakur@google.com 15611804Srjthakur@google.com // Update the bandwidth stats on the request 15711804Srjthakur@google.com if (!disableBandwidthHists) { 15811804Srjthakur@google.com writtenBytes += pkt_info.size; 15911804Srjthakur@google.com totalWrittenBytes += pkt_info.size; 16011804Srjthakur@google.com } 16111804Srjthakur@google.com 16211804Srjthakur@google.com // Sample the masked write address 16311804Srjthakur@google.com if (!disableAddrDists) 16411804Srjthakur@google.com writeAddrDist.sample(pkt_info.addr & writeAddrMask); 16511804Srjthakur@google.com 16611804Srjthakur@google.com if (!disableITTDists) { 16711804Srjthakur@google.com // Sample value of write-to-write inter transaction time 16811804Srjthakur@google.com if (timeOfLastWrite != 0) 16911804Srjthakur@google.com ittWriteWrite.sample(curTick() - timeOfLastWrite); 17011804Srjthakur@google.com timeOfLastWrite = curTick(); 17111804Srjthakur@google.com 17211804Srjthakur@google.com // Sample value of req-to-req inter transaction time 17311804Srjthakur@google.com if (timeOfLastReq != 0) 17411804Srjthakur@google.com ittReqReq.sample(curTick() - timeOfLastReq); 17511804Srjthakur@google.com timeOfLastReq = curTick(); 17611804Srjthakur@google.com } 17711804Srjthakur@google.com 17811804Srjthakur@google.com if (!is_atomic && !disableOutstandingHists && expects_response) 17911804Srjthakur@google.com ++outstandingWriteReqs; 18011804Srjthakur@google.com } 18111804Srjthakur@google.com} 18211804Srjthakur@google.com 18311804Srjthakur@google.comvoid 18411804Srjthakur@google.comCommMonitor::MonitorStats::updateRespStats( 18511804Srjthakur@google.com const ProbePoints::PacketInfo& pkt_info, Tick latency, bool is_atomic) 18611804Srjthakur@google.com{ 18711804Srjthakur@google.com if (pkt_info.cmd.isRead()) { 18811804Srjthakur@google.com // Decrement number of outstanding read requests 18911804Srjthakur@google.com if (!is_atomic && !disableOutstandingHists) { 19011804Srjthakur@google.com assert(outstandingReadReqs != 0); 19111804Srjthakur@google.com --outstandingReadReqs; 19211804Srjthakur@google.com } 19311804Srjthakur@google.com 19411804Srjthakur@google.com if (!disableLatencyHists) 19511804Srjthakur@google.com readLatencyHist.sample(latency); 19611804Srjthakur@google.com 19711804Srjthakur@google.com // Update the bandwidth stats based on responses for reads 19811804Srjthakur@google.com if (!disableBandwidthHists) { 19911804Srjthakur@google.com readBytes += pkt_info.size; 20011804Srjthakur@google.com totalReadBytes += pkt_info.size; 20111804Srjthakur@google.com } 20211804Srjthakur@google.com 20311804Srjthakur@google.com } else if (pkt_info.cmd.isWrite()) { 20411804Srjthakur@google.com // Decrement number of outstanding write requests 20511804Srjthakur@google.com if (!is_atomic && !disableOutstandingHists) { 20611804Srjthakur@google.com assert(outstandingWriteReqs != 0); 20711804Srjthakur@google.com --outstandingWriteReqs; 20811804Srjthakur@google.com } 20911804Srjthakur@google.com 21011804Srjthakur@google.com if (!disableLatencyHists) 21111804Srjthakur@google.com writeLatencyHist.sample(latency); 21211804Srjthakur@google.com } 21311804Srjthakur@google.com} 21411804Srjthakur@google.com 2158981Sandreas.hansson@arm.comTick 2168981Sandreas.hansson@arm.comCommMonitor::recvAtomic(PacketPtr pkt) 2178981Sandreas.hansson@arm.com{ 21811804Srjthakur@google.com const bool expects_response(pkt->needsResponse() && 21911804Srjthakur@google.com !pkt->cacheResponding()); 22011139Sandreas.hansson@arm.com ProbePoints::PacketInfo req_pkt_info(pkt); 22111139Sandreas.hansson@arm.com ppPktReq->notify(req_pkt_info); 22210994Sandreas.sandberg@arm.com 22310994Sandreas.sandberg@arm.com const Tick delay(masterPort.sendAtomic(pkt)); 22411804Srjthakur@google.com 22511804Srjthakur@google.com stats.updateReqStats(req_pkt_info, true, expects_response); 22611804Srjthakur@google.com if (expects_response) 22711804Srjthakur@google.com stats.updateRespStats(req_pkt_info, delay, true); 22811804Srjthakur@google.com 22910994Sandreas.sandberg@arm.com assert(pkt->isResponse()); 23011139Sandreas.hansson@arm.com ProbePoints::PacketInfo resp_pkt_info(pkt); 23111139Sandreas.hansson@arm.com ppPktResp->notify(resp_pkt_info); 23210994Sandreas.sandberg@arm.com return delay; 2338981Sandreas.hansson@arm.com} 2348981Sandreas.hansson@arm.com 2358981Sandreas.hansson@arm.comTick 2368981Sandreas.hansson@arm.comCommMonitor::recvAtomicSnoop(PacketPtr pkt) 2378981Sandreas.hansson@arm.com{ 2388981Sandreas.hansson@arm.com return slavePort.sendAtomicSnoop(pkt); 2398981Sandreas.hansson@arm.com} 2408981Sandreas.hansson@arm.com 2418981Sandreas.hansson@arm.combool 2428981Sandreas.hansson@arm.comCommMonitor::recvTimingReq(PacketPtr pkt) 2438981Sandreas.hansson@arm.com{ 2448981Sandreas.hansson@arm.com // should always see a request 2458981Sandreas.hansson@arm.com assert(pkt->isRequest()); 2468981Sandreas.hansson@arm.com 2478981Sandreas.hansson@arm.com // Store relevant fields of packet, because packet may be modified 2488981Sandreas.hansson@arm.com // or even deleted when sendTiming() is called. 24911139Sandreas.hansson@arm.com const ProbePoints::PacketInfo pkt_info(pkt); 25011139Sandreas.hansson@arm.com 25110994Sandreas.sandberg@arm.com const bool is_read = pkt->isRead(); 25210994Sandreas.sandberg@arm.com const bool is_write = pkt->isWrite(); 25311804Srjthakur@google.com const bool expects_response(pkt->needsResponse() && 25411804Srjthakur@google.com !pkt->cacheResponding()); 2558981Sandreas.hansson@arm.com 2568981Sandreas.hansson@arm.com // If a cache miss is served by a cache, a monitor near the memory 2578981Sandreas.hansson@arm.com // would see a request which needs a response, but this response 25811284Sandreas.hansson@arm.com // would not come back from the memory. Therefore we additionally 25911284Sandreas.hansson@arm.com // have to check the cacheResponding flag 2609785Sandreas.hansson@arm.com if (expects_response && !stats.disableLatencyHists) { 2619542Sandreas.hansson@arm.com pkt->pushSenderState(new CommMonitorSenderState(curTick())); 2628981Sandreas.hansson@arm.com } 2638981Sandreas.hansson@arm.com 26411284Sandreas.hansson@arm.com // Attempt to send the packet 2658981Sandreas.hansson@arm.com bool successful = masterPort.sendTimingReq(pkt); 2668981Sandreas.hansson@arm.com 2678981Sandreas.hansson@arm.com // If not successful, restore the sender state 2689785Sandreas.hansson@arm.com if (!successful && expects_response && !stats.disableLatencyHists) { 2699542Sandreas.hansson@arm.com delete pkt->popSenderState(); 2708981Sandreas.hansson@arm.com } 2718981Sandreas.hansson@arm.com 27210994Sandreas.sandberg@arm.com if (successful) { 27311139Sandreas.hansson@arm.com ppPktReq->notify(pkt_info); 27410994Sandreas.sandberg@arm.com } 27510994Sandreas.sandberg@arm.com 27611804Srjthakur@google.com if (successful) { 27711804Srjthakur@google.com DPRINTF(CommMonitor, "Forwarded %s request\n", 27811804Srjthakur@google.com (is_read ? "read" : (is_write ? "write" : "non read/write"))); 27911804Srjthakur@google.com stats.updateReqStats(pkt_info, false, expects_response); 2808981Sandreas.hansson@arm.com } 2818981Sandreas.hansson@arm.com return successful; 2828981Sandreas.hansson@arm.com} 2838981Sandreas.hansson@arm.com 2848981Sandreas.hansson@arm.combool 2858981Sandreas.hansson@arm.comCommMonitor::recvTimingResp(PacketPtr pkt) 2868981Sandreas.hansson@arm.com{ 2878981Sandreas.hansson@arm.com // should always see responses 2888981Sandreas.hansson@arm.com assert(pkt->isResponse()); 2898981Sandreas.hansson@arm.com 2908981Sandreas.hansson@arm.com // Store relevant fields of packet, because packet may be modified 2918981Sandreas.hansson@arm.com // or even deleted when sendTiming() is called. 29211139Sandreas.hansson@arm.com const ProbePoints::PacketInfo pkt_info(pkt); 29311139Sandreas.hansson@arm.com 2949785Sandreas.hansson@arm.com bool is_read = pkt->isRead(); 2959785Sandreas.hansson@arm.com bool is_write = pkt->isWrite(); 2968981Sandreas.hansson@arm.com Tick latency = 0; 2979785Sandreas.hansson@arm.com CommMonitorSenderState* received_state = 2988981Sandreas.hansson@arm.com dynamic_cast<CommMonitorSenderState*>(pkt->senderState); 2998981Sandreas.hansson@arm.com 3008981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 3018981Sandreas.hansson@arm.com // Restore initial sender state 3029785Sandreas.hansson@arm.com if (received_state == NULL) 3038981Sandreas.hansson@arm.com panic("Monitor got a response without monitor sender state\n"); 3048981Sandreas.hansson@arm.com 3058981Sandreas.hansson@arm.com // Restore the sate 3069785Sandreas.hansson@arm.com pkt->senderState = received_state->predecessor; 3078981Sandreas.hansson@arm.com } 3088981Sandreas.hansson@arm.com 3098981Sandreas.hansson@arm.com // Attempt to send the packet 3108981Sandreas.hansson@arm.com bool successful = slavePort.sendTimingResp(pkt); 3118981Sandreas.hansson@arm.com 3128981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 3138981Sandreas.hansson@arm.com // If packet successfully send, sample value of latency, 3148981Sandreas.hansson@arm.com // afterwards delete sender state, otherwise restore state 3158981Sandreas.hansson@arm.com if (successful) { 3169785Sandreas.hansson@arm.com latency = curTick() - received_state->transmitTime; 3178981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Latency: %d\n", latency); 3189785Sandreas.hansson@arm.com delete received_state; 3198981Sandreas.hansson@arm.com } else { 3208981Sandreas.hansson@arm.com // Don't delete anything and let the packet look like we 3218981Sandreas.hansson@arm.com // did not touch it 3229785Sandreas.hansson@arm.com pkt->senderState = received_state; 3238981Sandreas.hansson@arm.com } 3248981Sandreas.hansson@arm.com } 3258981Sandreas.hansson@arm.com 32610994Sandreas.sandberg@arm.com if (successful) { 32711139Sandreas.hansson@arm.com ppPktResp->notify(pkt_info); 32811804Srjthakur@google.com DPRINTF(CommMonitor, "Received %s response\n", 32911804Srjthakur@google.com (is_read ? "Read" : (is_write ? "Write" : "non read/write"))); 33011804Srjthakur@google.com stats.updateRespStats(pkt_info, latency, false); 3318981Sandreas.hansson@arm.com } 3328981Sandreas.hansson@arm.com return successful; 3338981Sandreas.hansson@arm.com} 3348981Sandreas.hansson@arm.com 3358981Sandreas.hansson@arm.comvoid 3368981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopReq(PacketPtr pkt) 3378981Sandreas.hansson@arm.com{ 3388981Sandreas.hansson@arm.com slavePort.sendTimingSnoopReq(pkt); 3398981Sandreas.hansson@arm.com} 3408981Sandreas.hansson@arm.com 3418981Sandreas.hansson@arm.combool 3428981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopResp(PacketPtr pkt) 3438981Sandreas.hansson@arm.com{ 3448981Sandreas.hansson@arm.com return masterPort.sendTimingSnoopResp(pkt); 3458981Sandreas.hansson@arm.com} 3468981Sandreas.hansson@arm.com 34711173Sandreas.hansson@arm.comvoid 34811173Sandreas.hansson@arm.comCommMonitor::recvRetrySnoopResp() 34911173Sandreas.hansson@arm.com{ 35011173Sandreas.hansson@arm.com slavePort.sendRetrySnoopResp(); 35111173Sandreas.hansson@arm.com} 35211173Sandreas.hansson@arm.com 3538981Sandreas.hansson@arm.combool 3548981Sandreas.hansson@arm.comCommMonitor::isSnooping() const 3558981Sandreas.hansson@arm.com{ 3569088Sandreas.hansson@arm.com // check if the connected master port is snooping 3579088Sandreas.hansson@arm.com return slavePort.isSnooping(); 3588981Sandreas.hansson@arm.com} 3598981Sandreas.hansson@arm.com 3608981Sandreas.hansson@arm.comAddrRangeList 3619090Sandreas.hansson@arm.comCommMonitor::getAddrRanges() const 3628981Sandreas.hansson@arm.com{ 3639089Sandreas.hansson@arm.com // get the address ranges of the connected slave port 3649089Sandreas.hansson@arm.com return masterPort.getAddrRanges(); 3658981Sandreas.hansson@arm.com} 3668981Sandreas.hansson@arm.com 3678981Sandreas.hansson@arm.comvoid 36810713Sandreas.hansson@arm.comCommMonitor::recvReqRetry() 3698981Sandreas.hansson@arm.com{ 37010713Sandreas.hansson@arm.com slavePort.sendRetryReq(); 3718981Sandreas.hansson@arm.com} 3728981Sandreas.hansson@arm.com 3738981Sandreas.hansson@arm.comvoid 37410713Sandreas.hansson@arm.comCommMonitor::recvRespRetry() 3758981Sandreas.hansson@arm.com{ 37610713Sandreas.hansson@arm.com masterPort.sendRetryResp(); 3778981Sandreas.hansson@arm.com} 3788981Sandreas.hansson@arm.com 3798981Sandreas.hansson@arm.comvoid 3808981Sandreas.hansson@arm.comCommMonitor::recvRangeChange() 3818981Sandreas.hansson@arm.com{ 3828981Sandreas.hansson@arm.com slavePort.sendRangeChange(); 3838981Sandreas.hansson@arm.com} 3848981Sandreas.hansson@arm.com 3858981Sandreas.hansson@arm.comvoid 3868981Sandreas.hansson@arm.comCommMonitor::regStats() 3878981Sandreas.hansson@arm.com{ 38811522Sstephan.diestelhorst@arm.com MemObject::regStats(); 38911522Sstephan.diestelhorst@arm.com 3908981Sandreas.hansson@arm.com // Initialise all the monitor stats 3918981Sandreas.hansson@arm.com using namespace Stats; 3928981Sandreas.hansson@arm.com 3938981Sandreas.hansson@arm.com stats.readBurstLengthHist 3948981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 3958981Sandreas.hansson@arm.com .name(name() + ".readBurstLengthHist") 3968981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 3978981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 3988981Sandreas.hansson@arm.com 3998981Sandreas.hansson@arm.com stats.writeBurstLengthHist 4008981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 4018981Sandreas.hansson@arm.com .name(name() + ".writeBurstLengthHist") 4028981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 4038981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 4048981Sandreas.hansson@arm.com 4058981Sandreas.hansson@arm.com // Stats based on received responses 4068981Sandreas.hansson@arm.com stats.readBandwidthHist 4078981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 4088981Sandreas.hansson@arm.com .name(name() + ".readBandwidthHist") 4098981Sandreas.hansson@arm.com .desc("Histogram of read bandwidth per sample period (bytes/s)") 4108981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4118981Sandreas.hansson@arm.com 4128981Sandreas.hansson@arm.com stats.averageReadBW 4138981Sandreas.hansson@arm.com .name(name() + ".averageReadBandwidth") 4148981Sandreas.hansson@arm.com .desc("Average read bandwidth (bytes/s)") 4158981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4168981Sandreas.hansson@arm.com 4178981Sandreas.hansson@arm.com stats.totalReadBytes 4188981Sandreas.hansson@arm.com .name(name() + ".totalReadBytes") 4198981Sandreas.hansson@arm.com .desc("Number of bytes read") 4208981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4218981Sandreas.hansson@arm.com 4228981Sandreas.hansson@arm.com stats.averageReadBW = stats.totalReadBytes / simSeconds; 4238981Sandreas.hansson@arm.com 4248981Sandreas.hansson@arm.com // Stats based on successfully sent requests 4258981Sandreas.hansson@arm.com stats.writeBandwidthHist 4268981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 4278981Sandreas.hansson@arm.com .name(name() + ".writeBandwidthHist") 4288981Sandreas.hansson@arm.com .desc("Histogram of write bandwidth (bytes/s)") 4298981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? (pdf | nozero) : pdf); 4308981Sandreas.hansson@arm.com 4318981Sandreas.hansson@arm.com stats.averageWriteBW 4328981Sandreas.hansson@arm.com .name(name() + ".averageWriteBandwidth") 4338981Sandreas.hansson@arm.com .desc("Average write bandwidth (bytes/s)") 4348981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4358981Sandreas.hansson@arm.com 4368981Sandreas.hansson@arm.com stats.totalWrittenBytes 4378981Sandreas.hansson@arm.com .name(name() + ".totalWrittenBytes") 4388981Sandreas.hansson@arm.com .desc("Number of bytes written") 4398981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4408981Sandreas.hansson@arm.com 4418981Sandreas.hansson@arm.com stats.averageWriteBW = stats.totalWrittenBytes / simSeconds; 4428981Sandreas.hansson@arm.com 4438981Sandreas.hansson@arm.com stats.readLatencyHist 4448981Sandreas.hansson@arm.com .init(params()->latency_bins) 4458981Sandreas.hansson@arm.com .name(name() + ".readLatencyHist") 4468981Sandreas.hansson@arm.com .desc("Read request-response latency") 4478981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 4488981Sandreas.hansson@arm.com 4498981Sandreas.hansson@arm.com stats.writeLatencyHist 4508981Sandreas.hansson@arm.com .init(params()->latency_bins) 4518981Sandreas.hansson@arm.com .name(name() + ".writeLatencyHist") 4528981Sandreas.hansson@arm.com .desc("Write request-response latency") 4538981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 4548981Sandreas.hansson@arm.com 4558981Sandreas.hansson@arm.com stats.ittReadRead 4568981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4578981Sandreas.hansson@arm.com params()->itt_bins) 4588981Sandreas.hansson@arm.com .name(name() + ".ittReadRead") 4598981Sandreas.hansson@arm.com .desc("Read-to-read inter transaction time") 4608981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4618981Sandreas.hansson@arm.com 4628981Sandreas.hansson@arm.com stats.ittWriteWrite 4638981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4648981Sandreas.hansson@arm.com params()->itt_bins) 4658981Sandreas.hansson@arm.com .name(name() + ".ittWriteWrite") 4668981Sandreas.hansson@arm.com .desc("Write-to-write inter transaction time") 4678981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4688981Sandreas.hansson@arm.com 4698981Sandreas.hansson@arm.com stats.ittReqReq 4708981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4718981Sandreas.hansson@arm.com params()->itt_bins) 4728981Sandreas.hansson@arm.com .name(name() + ".ittReqReq") 4738981Sandreas.hansson@arm.com .desc("Request-to-request inter transaction time") 4748981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4758981Sandreas.hansson@arm.com 4768981Sandreas.hansson@arm.com stats.outstandingReadsHist 4778981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 4788981Sandreas.hansson@arm.com .name(name() + ".outstandingReadsHist") 4798981Sandreas.hansson@arm.com .desc("Outstanding read transactions") 4808981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 4818981Sandreas.hansson@arm.com 4828981Sandreas.hansson@arm.com stats.outstandingWritesHist 4838981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 4848981Sandreas.hansson@arm.com .name(name() + ".outstandingWritesHist") 4858981Sandreas.hansson@arm.com .desc("Outstanding write transactions") 4868981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 4878981Sandreas.hansson@arm.com 4888981Sandreas.hansson@arm.com stats.readTransHist 4898981Sandreas.hansson@arm.com .init(params()->transaction_bins) 4908981Sandreas.hansson@arm.com .name(name() + ".readTransHist") 4918981Sandreas.hansson@arm.com .desc("Histogram of read transactions per sample period") 4928981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 4938981Sandreas.hansson@arm.com 4948981Sandreas.hansson@arm.com stats.writeTransHist 4958981Sandreas.hansson@arm.com .init(params()->transaction_bins) 4968981Sandreas.hansson@arm.com .name(name() + ".writeTransHist") 4978981Sandreas.hansson@arm.com .desc("Histogram of read transactions per sample period") 4988981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 4998981Sandreas.hansson@arm.com 5008981Sandreas.hansson@arm.com stats.readAddrDist 5018981Sandreas.hansson@arm.com .init(0) 5028981Sandreas.hansson@arm.com .name(name() + ".readAddrDist") 5038981Sandreas.hansson@arm.com .desc("Read address distribution") 5048981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 5058981Sandreas.hansson@arm.com 5068981Sandreas.hansson@arm.com stats.writeAddrDist 5078981Sandreas.hansson@arm.com .init(0) 5088981Sandreas.hansson@arm.com .name(name() + ".writeAddrDist") 5098981Sandreas.hansson@arm.com .desc("Write address distribution") 5108981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 5118981Sandreas.hansson@arm.com} 5128981Sandreas.hansson@arm.com 5138981Sandreas.hansson@arm.comvoid 5148981Sandreas.hansson@arm.comCommMonitor::samplePeriodic() 5158981Sandreas.hansson@arm.com{ 5168981Sandreas.hansson@arm.com // the periodic stats update runs on the granularity of sample 5178981Sandreas.hansson@arm.com // periods, but in combination with this there may also be a 5188981Sandreas.hansson@arm.com // external resets and dumps of the stats (through schedStatEvent) 5198981Sandreas.hansson@arm.com // causing the stats themselves to capture less than a sample 5208981Sandreas.hansson@arm.com // period 5218981Sandreas.hansson@arm.com 5228981Sandreas.hansson@arm.com // only capture if we have not reset the stats during the last 5238981Sandreas.hansson@arm.com // sample period 5248981Sandreas.hansson@arm.com if (simTicks.value() >= samplePeriodTicks) { 5258981Sandreas.hansson@arm.com if (!stats.disableTransactionHists) { 5268981Sandreas.hansson@arm.com stats.readTransHist.sample(stats.readTrans); 5278981Sandreas.hansson@arm.com stats.writeTransHist.sample(stats.writeTrans); 5288981Sandreas.hansson@arm.com } 5298981Sandreas.hansson@arm.com 5308981Sandreas.hansson@arm.com if (!stats.disableBandwidthHists) { 5318981Sandreas.hansson@arm.com stats.readBandwidthHist.sample(stats.readBytes / samplePeriod); 5328981Sandreas.hansson@arm.com stats.writeBandwidthHist.sample(stats.writtenBytes / samplePeriod); 5338981Sandreas.hansson@arm.com } 5348981Sandreas.hansson@arm.com 5358981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists) { 5368981Sandreas.hansson@arm.com stats.outstandingReadsHist.sample(stats.outstandingReadReqs); 5378981Sandreas.hansson@arm.com stats.outstandingWritesHist.sample(stats.outstandingWriteReqs); 5388981Sandreas.hansson@arm.com } 5398981Sandreas.hansson@arm.com } 5408981Sandreas.hansson@arm.com 5418981Sandreas.hansson@arm.com // reset the sampled values 5428981Sandreas.hansson@arm.com stats.readTrans = 0; 5438981Sandreas.hansson@arm.com stats.writeTrans = 0; 5448981Sandreas.hansson@arm.com 5458981Sandreas.hansson@arm.com stats.readBytes = 0; 5468981Sandreas.hansson@arm.com stats.writtenBytes = 0; 5478981Sandreas.hansson@arm.com 5488981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 5498981Sandreas.hansson@arm.com} 5508981Sandreas.hansson@arm.com 5518981Sandreas.hansson@arm.comvoid 5528981Sandreas.hansson@arm.comCommMonitor::startup() 5538981Sandreas.hansson@arm.com{ 5548981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 5558981Sandreas.hansson@arm.com} 556