comm_monitor.cc revision 9356
18981Sandreas.hansson@arm.com/* 28981Sandreas.hansson@arm.com * Copyright (c) 2012 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 419356Snilay@cs.wisc.edu#include "base/trace.hh" 428981Sandreas.hansson@arm.com#include "debug/CommMonitor.hh" 438981Sandreas.hansson@arm.com#include "mem/comm_monitor.hh" 448981Sandreas.hansson@arm.com#include "sim/stats.hh" 458981Sandreas.hansson@arm.com 468981Sandreas.hansson@arm.comCommMonitor::CommMonitor(Params* params) 478981Sandreas.hansson@arm.com : MemObject(params), 488981Sandreas.hansson@arm.com masterPort(name() + "-master", *this), 498981Sandreas.hansson@arm.com slavePort(name() + "-slave", *this), 508981Sandreas.hansson@arm.com samplePeriodicEvent(this), 518981Sandreas.hansson@arm.com samplePeriodTicks(params->sample_period), 528981Sandreas.hansson@arm.com readAddrMask(params->read_addr_mask), 538981Sandreas.hansson@arm.com writeAddrMask(params->write_addr_mask), 548981Sandreas.hansson@arm.com stats(params) 558981Sandreas.hansson@arm.com{ 568981Sandreas.hansson@arm.com // keep track of the sample period both in ticks and absolute time 578981Sandreas.hansson@arm.com samplePeriod.setTick(params->sample_period); 588981Sandreas.hansson@arm.com 598981Sandreas.hansson@arm.com DPRINTF(CommMonitor, 608981Sandreas.hansson@arm.com "Created monitor %s with sample period %d ticks (%f s)\n", 618981Sandreas.hansson@arm.com name(), samplePeriodTicks, samplePeriod); 628981Sandreas.hansson@arm.com} 638981Sandreas.hansson@arm.com 648981Sandreas.hansson@arm.comCommMonitor* 658981Sandreas.hansson@arm.comCommMonitorParams::create() 668981Sandreas.hansson@arm.com{ 678981Sandreas.hansson@arm.com return new CommMonitor(this); 688981Sandreas.hansson@arm.com} 698981Sandreas.hansson@arm.com 708981Sandreas.hansson@arm.comvoid 718981Sandreas.hansson@arm.comCommMonitor::init() 728981Sandreas.hansson@arm.com{ 738981Sandreas.hansson@arm.com // make sure both sides of the monitor are connected 748981Sandreas.hansson@arm.com if (!slavePort.isConnected() || !masterPort.isConnected()) 758981Sandreas.hansson@arm.com fatal("Communication monitor is not connected on both sides.\n"); 768981Sandreas.hansson@arm.com} 778981Sandreas.hansson@arm.com 789294Sandreas.hansson@arm.comBaseMasterPort& 799294Sandreas.hansson@arm.comCommMonitor::getMasterPort(const std::string& if_name, PortID idx) 808981Sandreas.hansson@arm.com{ 818981Sandreas.hansson@arm.com if (if_name == "master") { 828981Sandreas.hansson@arm.com return masterPort; 838981Sandreas.hansson@arm.com } else { 848981Sandreas.hansson@arm.com return MemObject::getMasterPort(if_name, idx); 858981Sandreas.hansson@arm.com } 868981Sandreas.hansson@arm.com} 878981Sandreas.hansson@arm.com 889294Sandreas.hansson@arm.comBaseSlavePort& 899294Sandreas.hansson@arm.comCommMonitor::getSlavePort(const std::string& if_name, PortID idx) 908981Sandreas.hansson@arm.com{ 918981Sandreas.hansson@arm.com if (if_name == "slave") { 928981Sandreas.hansson@arm.com return slavePort; 938981Sandreas.hansson@arm.com } else { 948981Sandreas.hansson@arm.com return MemObject::getSlavePort(if_name, idx); 958981Sandreas.hansson@arm.com } 968981Sandreas.hansson@arm.com} 978981Sandreas.hansson@arm.com 988981Sandreas.hansson@arm.comvoid 998981Sandreas.hansson@arm.comCommMonitor::recvFunctional(PacketPtr pkt) 1008981Sandreas.hansson@arm.com{ 1018981Sandreas.hansson@arm.com masterPort.sendFunctional(pkt); 1028981Sandreas.hansson@arm.com} 1038981Sandreas.hansson@arm.com 1048981Sandreas.hansson@arm.comvoid 1058981Sandreas.hansson@arm.comCommMonitor::recvFunctionalSnoop(PacketPtr pkt) 1068981Sandreas.hansson@arm.com{ 1078981Sandreas.hansson@arm.com slavePort.sendFunctionalSnoop(pkt); 1088981Sandreas.hansson@arm.com} 1098981Sandreas.hansson@arm.com 1108981Sandreas.hansson@arm.comTick 1118981Sandreas.hansson@arm.comCommMonitor::recvAtomic(PacketPtr pkt) 1128981Sandreas.hansson@arm.com{ 1138981Sandreas.hansson@arm.com return masterPort.sendAtomic(pkt); 1148981Sandreas.hansson@arm.com} 1158981Sandreas.hansson@arm.com 1168981Sandreas.hansson@arm.comTick 1178981Sandreas.hansson@arm.comCommMonitor::recvAtomicSnoop(PacketPtr pkt) 1188981Sandreas.hansson@arm.com{ 1198981Sandreas.hansson@arm.com return slavePort.sendAtomicSnoop(pkt); 1208981Sandreas.hansson@arm.com} 1218981Sandreas.hansson@arm.com 1228981Sandreas.hansson@arm.combool 1238981Sandreas.hansson@arm.comCommMonitor::recvTimingReq(PacketPtr pkt) 1248981Sandreas.hansson@arm.com{ 1258981Sandreas.hansson@arm.com // should always see a request 1268981Sandreas.hansson@arm.com assert(pkt->isRequest()); 1278981Sandreas.hansson@arm.com 1288981Sandreas.hansson@arm.com // Store relevant fields of packet, because packet may be modified 1298981Sandreas.hansson@arm.com // or even deleted when sendTiming() is called. 1308981Sandreas.hansson@arm.com bool isRead = pkt->isRead(); 1318981Sandreas.hansson@arm.com bool isWrite = pkt->isWrite(); 1328981Sandreas.hansson@arm.com unsigned size = pkt->getSize(); 1338981Sandreas.hansson@arm.com Addr addr = pkt->getAddr(); 1348981Sandreas.hansson@arm.com bool needsResponse = pkt->needsResponse(); 1358981Sandreas.hansson@arm.com bool memInhibitAsserted = pkt->memInhibitAsserted(); 1368981Sandreas.hansson@arm.com Packet::SenderState* senderState = pkt->senderState; 1378981Sandreas.hansson@arm.com 1388981Sandreas.hansson@arm.com // If a cache miss is served by a cache, a monitor near the memory 1398981Sandreas.hansson@arm.com // would see a request which needs a response, but this response 1408981Sandreas.hansson@arm.com // would be inhibited and not come back from the memory. Therefore 1418981Sandreas.hansson@arm.com // we additionally have to check the inhibit flag. 1428981Sandreas.hansson@arm.com if (needsResponse && !memInhibitAsserted && !stats.disableLatencyHists) { 1438981Sandreas.hansson@arm.com pkt->senderState = new CommMonitorSenderState(senderState, 1448981Sandreas.hansson@arm.com curTick()); 1458981Sandreas.hansson@arm.com } 1468981Sandreas.hansson@arm.com 1478981Sandreas.hansson@arm.com // Attempt to send the packet (always succeeds for inhibited 1488981Sandreas.hansson@arm.com // packets) 1498981Sandreas.hansson@arm.com bool successful = masterPort.sendTimingReq(pkt); 1508981Sandreas.hansson@arm.com 1518981Sandreas.hansson@arm.com // If not successful, restore the sender state 1528981Sandreas.hansson@arm.com if (!successful && needsResponse && !stats.disableLatencyHists) { 1538981Sandreas.hansson@arm.com delete pkt->senderState; 1548981Sandreas.hansson@arm.com pkt->senderState = senderState; 1558981Sandreas.hansson@arm.com } 1568981Sandreas.hansson@arm.com 1578981Sandreas.hansson@arm.com if (successful && isRead) { 1588981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Forwarded read request\n"); 1598981Sandreas.hansson@arm.com 1608981Sandreas.hansson@arm.com // Increment number of observed read transactions 1618981Sandreas.hansson@arm.com if (!stats.disableTransactionHists) { 1628981Sandreas.hansson@arm.com ++stats.readTrans; 1638981Sandreas.hansson@arm.com } 1648981Sandreas.hansson@arm.com 1658981Sandreas.hansson@arm.com // Get sample of burst length 1668981Sandreas.hansson@arm.com if (!stats.disableBurstLengthHists) { 1678981Sandreas.hansson@arm.com stats.readBurstLengthHist.sample(size); 1688981Sandreas.hansson@arm.com } 1698981Sandreas.hansson@arm.com 1708981Sandreas.hansson@arm.com // Sample the masked address 1718981Sandreas.hansson@arm.com if (!stats.disableAddrDists) { 1728981Sandreas.hansson@arm.com stats.readAddrDist.sample(addr & readAddrMask); 1738981Sandreas.hansson@arm.com } 1748981Sandreas.hansson@arm.com 1758981Sandreas.hansson@arm.com // If it needs a response increment number of outstanding read 1768981Sandreas.hansson@arm.com // requests 1778981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists && needsResponse) { 1788981Sandreas.hansson@arm.com ++stats.outstandingReadReqs; 1798981Sandreas.hansson@arm.com } 1808981Sandreas.hansson@arm.com 1818981Sandreas.hansson@arm.com if (!stats.disableITTDists) { 1828981Sandreas.hansson@arm.com // Sample value of read-read inter transaction time 1838981Sandreas.hansson@arm.com if (stats.timeOfLastRead != 0) { 1848981Sandreas.hansson@arm.com stats.ittReadRead.sample(curTick() - stats.timeOfLastRead); 1858981Sandreas.hansson@arm.com } 1868981Sandreas.hansson@arm.com stats.timeOfLastRead = curTick(); 1878981Sandreas.hansson@arm.com 1888981Sandreas.hansson@arm.com // Sample value of req-req inter transaction time 1898981Sandreas.hansson@arm.com if (stats.timeOfLastReq != 0) { 1908981Sandreas.hansson@arm.com stats.ittReqReq.sample(curTick() - stats.timeOfLastReq); 1918981Sandreas.hansson@arm.com } 1928981Sandreas.hansson@arm.com stats.timeOfLastReq = curTick(); 1938981Sandreas.hansson@arm.com } 1948981Sandreas.hansson@arm.com } else if (successful && isWrite) { 1958981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Forwarded write request\n"); 1968981Sandreas.hansson@arm.com 1978981Sandreas.hansson@arm.com // Same as for reads 1988981Sandreas.hansson@arm.com if (!stats.disableTransactionHists) { 1998981Sandreas.hansson@arm.com ++stats.writeTrans; 2008981Sandreas.hansson@arm.com } 2018981Sandreas.hansson@arm.com 2028981Sandreas.hansson@arm.com if (!stats.disableBurstLengthHists) { 2038981Sandreas.hansson@arm.com stats.writeBurstLengthHist.sample(size); 2048981Sandreas.hansson@arm.com } 2058981Sandreas.hansson@arm.com 2068981Sandreas.hansson@arm.com // Update the bandwidth stats on the request 2078981Sandreas.hansson@arm.com if (!stats.disableBandwidthHists) { 2088981Sandreas.hansson@arm.com stats.writtenBytes += size; 2098981Sandreas.hansson@arm.com stats.totalWrittenBytes += size; 2108981Sandreas.hansson@arm.com } 2118981Sandreas.hansson@arm.com 2128981Sandreas.hansson@arm.com // Sample the masked write address 2138981Sandreas.hansson@arm.com if (!stats.disableAddrDists) { 2148981Sandreas.hansson@arm.com stats.writeAddrDist.sample(addr & writeAddrMask); 2158981Sandreas.hansson@arm.com } 2168981Sandreas.hansson@arm.com 2178981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists && needsResponse) { 2188981Sandreas.hansson@arm.com ++stats.outstandingWriteReqs; 2198981Sandreas.hansson@arm.com } 2208981Sandreas.hansson@arm.com 2218981Sandreas.hansson@arm.com if (!stats.disableITTDists) { 2228981Sandreas.hansson@arm.com // Sample value of write-to-write inter transaction time 2238981Sandreas.hansson@arm.com if (stats.timeOfLastWrite != 0) { 2248981Sandreas.hansson@arm.com stats.ittWriteWrite.sample(curTick() - stats.timeOfLastWrite); 2258981Sandreas.hansson@arm.com } 2268981Sandreas.hansson@arm.com stats.timeOfLastWrite = curTick(); 2278981Sandreas.hansson@arm.com 2288981Sandreas.hansson@arm.com // Sample value of req-to-req inter transaction time 2298981Sandreas.hansson@arm.com if (stats.timeOfLastReq != 0) { 2308981Sandreas.hansson@arm.com stats.ittReqReq.sample(curTick() - stats.timeOfLastReq); 2318981Sandreas.hansson@arm.com } 2328981Sandreas.hansson@arm.com stats.timeOfLastReq = curTick(); 2338981Sandreas.hansson@arm.com } 2348981Sandreas.hansson@arm.com } else if (successful) { 2358981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Forwarded non read/write request\n"); 2368981Sandreas.hansson@arm.com } 2378981Sandreas.hansson@arm.com 2388981Sandreas.hansson@arm.com return successful; 2398981Sandreas.hansson@arm.com} 2408981Sandreas.hansson@arm.com 2418981Sandreas.hansson@arm.combool 2428981Sandreas.hansson@arm.comCommMonitor::recvTimingResp(PacketPtr pkt) 2438981Sandreas.hansson@arm.com{ 2448981Sandreas.hansson@arm.com // should always see responses 2458981Sandreas.hansson@arm.com assert(pkt->isResponse()); 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. 2498981Sandreas.hansson@arm.com bool isRead = pkt->isRead(); 2508981Sandreas.hansson@arm.com bool isWrite = pkt->isWrite(); 2518981Sandreas.hansson@arm.com unsigned size = pkt->getSize(); 2528981Sandreas.hansson@arm.com Tick latency = 0; 2538981Sandreas.hansson@arm.com CommMonitorSenderState* commReceivedState = 2548981Sandreas.hansson@arm.com dynamic_cast<CommMonitorSenderState*>(pkt->senderState); 2558981Sandreas.hansson@arm.com 2568981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 2578981Sandreas.hansson@arm.com // Restore initial sender state 2588981Sandreas.hansson@arm.com if (commReceivedState == NULL) 2598981Sandreas.hansson@arm.com panic("Monitor got a response without monitor sender state\n"); 2608981Sandreas.hansson@arm.com 2618981Sandreas.hansson@arm.com // Restore the sate 2628981Sandreas.hansson@arm.com pkt->senderState = commReceivedState->origSenderState; 2638981Sandreas.hansson@arm.com } 2648981Sandreas.hansson@arm.com 2658981Sandreas.hansson@arm.com // Attempt to send the packet 2668981Sandreas.hansson@arm.com bool successful = slavePort.sendTimingResp(pkt); 2678981Sandreas.hansson@arm.com 2688981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 2698981Sandreas.hansson@arm.com // If packet successfully send, sample value of latency, 2708981Sandreas.hansson@arm.com // afterwards delete sender state, otherwise restore state 2718981Sandreas.hansson@arm.com if (successful) { 2728981Sandreas.hansson@arm.com latency = curTick() - commReceivedState->transmitTime; 2738981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Latency: %d\n", latency); 2748981Sandreas.hansson@arm.com delete commReceivedState; 2758981Sandreas.hansson@arm.com } else { 2768981Sandreas.hansson@arm.com // Don't delete anything and let the packet look like we 2778981Sandreas.hansson@arm.com // did not touch it 2788981Sandreas.hansson@arm.com pkt->senderState = commReceivedState; 2798981Sandreas.hansson@arm.com } 2808981Sandreas.hansson@arm.com } 2818981Sandreas.hansson@arm.com 2828981Sandreas.hansson@arm.com if (successful && isRead) { 2838981Sandreas.hansson@arm.com // Decrement number of outstanding read requests 2848981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Received read response\n"); 2858981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists) { 2868981Sandreas.hansson@arm.com assert(stats.outstandingReadReqs != 0); 2878981Sandreas.hansson@arm.com --stats.outstandingReadReqs; 2888981Sandreas.hansson@arm.com } 2898981Sandreas.hansson@arm.com 2908981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 2918981Sandreas.hansson@arm.com stats.readLatencyHist.sample(latency); 2928981Sandreas.hansson@arm.com } 2938981Sandreas.hansson@arm.com 2948981Sandreas.hansson@arm.com // Update the bandwidth stats based on responses for reads 2958981Sandreas.hansson@arm.com if (!stats.disableBandwidthHists) { 2968981Sandreas.hansson@arm.com stats.readBytes += size; 2978981Sandreas.hansson@arm.com stats.totalReadBytes += size; 2988981Sandreas.hansson@arm.com } 2998981Sandreas.hansson@arm.com 3008981Sandreas.hansson@arm.com } else if (successful && isWrite) { 3018981Sandreas.hansson@arm.com // Decrement number of outstanding write requests 3028981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Received write response\n"); 3038981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists) { 3048981Sandreas.hansson@arm.com assert(stats.outstandingWriteReqs != 0); 3058981Sandreas.hansson@arm.com --stats.outstandingWriteReqs; 3068981Sandreas.hansson@arm.com } 3078981Sandreas.hansson@arm.com 3088981Sandreas.hansson@arm.com if (!stats.disableLatencyHists) { 3098981Sandreas.hansson@arm.com stats.writeLatencyHist.sample(latency); 3108981Sandreas.hansson@arm.com } 3118981Sandreas.hansson@arm.com } else if (successful) { 3128981Sandreas.hansson@arm.com DPRINTF(CommMonitor, "Received non read/write response\n"); 3138981Sandreas.hansson@arm.com } 3148981Sandreas.hansson@arm.com return successful; 3158981Sandreas.hansson@arm.com} 3168981Sandreas.hansson@arm.com 3178981Sandreas.hansson@arm.comvoid 3188981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopReq(PacketPtr pkt) 3198981Sandreas.hansson@arm.com{ 3208981Sandreas.hansson@arm.com slavePort.sendTimingSnoopReq(pkt); 3218981Sandreas.hansson@arm.com} 3228981Sandreas.hansson@arm.com 3238981Sandreas.hansson@arm.combool 3248981Sandreas.hansson@arm.comCommMonitor::recvTimingSnoopResp(PacketPtr pkt) 3258981Sandreas.hansson@arm.com{ 3268981Sandreas.hansson@arm.com return masterPort.sendTimingSnoopResp(pkt); 3278981Sandreas.hansson@arm.com} 3288981Sandreas.hansson@arm.com 3298981Sandreas.hansson@arm.combool 3308981Sandreas.hansson@arm.comCommMonitor::isSnooping() const 3318981Sandreas.hansson@arm.com{ 3329088Sandreas.hansson@arm.com // check if the connected master port is snooping 3339088Sandreas.hansson@arm.com return slavePort.isSnooping(); 3348981Sandreas.hansson@arm.com} 3358981Sandreas.hansson@arm.com 3368981Sandreas.hansson@arm.comunsigned 3378981Sandreas.hansson@arm.comCommMonitor::deviceBlockSizeMaster() 3388981Sandreas.hansson@arm.com{ 3398981Sandreas.hansson@arm.com return slavePort.peerBlockSize(); 3408981Sandreas.hansson@arm.com} 3418981Sandreas.hansson@arm.com 3428981Sandreas.hansson@arm.comunsigned 3438981Sandreas.hansson@arm.comCommMonitor::deviceBlockSizeSlave() 3448981Sandreas.hansson@arm.com{ 3458981Sandreas.hansson@arm.com return masterPort.peerBlockSize(); 3468981Sandreas.hansson@arm.com} 3478981Sandreas.hansson@arm.com 3488981Sandreas.hansson@arm.comAddrRangeList 3499090Sandreas.hansson@arm.comCommMonitor::getAddrRanges() const 3508981Sandreas.hansson@arm.com{ 3519089Sandreas.hansson@arm.com // get the address ranges of the connected slave port 3529089Sandreas.hansson@arm.com return masterPort.getAddrRanges(); 3538981Sandreas.hansson@arm.com} 3548981Sandreas.hansson@arm.com 3558981Sandreas.hansson@arm.comvoid 3568981Sandreas.hansson@arm.comCommMonitor::recvRetryMaster() 3578981Sandreas.hansson@arm.com{ 3588981Sandreas.hansson@arm.com slavePort.sendRetry(); 3598981Sandreas.hansson@arm.com} 3608981Sandreas.hansson@arm.com 3618981Sandreas.hansson@arm.comvoid 3628981Sandreas.hansson@arm.comCommMonitor::recvRetrySlave() 3638981Sandreas.hansson@arm.com{ 3648981Sandreas.hansson@arm.com masterPort.sendRetry(); 3658981Sandreas.hansson@arm.com} 3668981Sandreas.hansson@arm.com 3678981Sandreas.hansson@arm.comvoid 3688981Sandreas.hansson@arm.comCommMonitor::recvRangeChange() 3698981Sandreas.hansson@arm.com{ 3708981Sandreas.hansson@arm.com slavePort.sendRangeChange(); 3718981Sandreas.hansson@arm.com} 3728981Sandreas.hansson@arm.com 3738981Sandreas.hansson@arm.comvoid 3748981Sandreas.hansson@arm.comCommMonitor::regStats() 3758981Sandreas.hansson@arm.com{ 3768981Sandreas.hansson@arm.com // Initialise all the monitor stats 3778981Sandreas.hansson@arm.com using namespace Stats; 3788981Sandreas.hansson@arm.com 3798981Sandreas.hansson@arm.com stats.readBurstLengthHist 3808981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 3818981Sandreas.hansson@arm.com .name(name() + ".readBurstLengthHist") 3828981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 3838981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 3848981Sandreas.hansson@arm.com 3858981Sandreas.hansson@arm.com stats.writeBurstLengthHist 3868981Sandreas.hansson@arm.com .init(params()->burst_length_bins) 3878981Sandreas.hansson@arm.com .name(name() + ".writeBurstLengthHist") 3888981Sandreas.hansson@arm.com .desc("Histogram of burst lengths of transmitted packets") 3898981Sandreas.hansson@arm.com .flags(stats.disableBurstLengthHists ? nozero : pdf); 3908981Sandreas.hansson@arm.com 3918981Sandreas.hansson@arm.com // Stats based on received responses 3928981Sandreas.hansson@arm.com stats.readBandwidthHist 3938981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 3948981Sandreas.hansson@arm.com .name(name() + ".readBandwidthHist") 3958981Sandreas.hansson@arm.com .desc("Histogram of read bandwidth per sample period (bytes/s)") 3968981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 3978981Sandreas.hansson@arm.com 3988981Sandreas.hansson@arm.com stats.averageReadBW 3998981Sandreas.hansson@arm.com .name(name() + ".averageReadBandwidth") 4008981Sandreas.hansson@arm.com .desc("Average read bandwidth (bytes/s)") 4018981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4028981Sandreas.hansson@arm.com 4038981Sandreas.hansson@arm.com stats.totalReadBytes 4048981Sandreas.hansson@arm.com .name(name() + ".totalReadBytes") 4058981Sandreas.hansson@arm.com .desc("Number of bytes read") 4068981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4078981Sandreas.hansson@arm.com 4088981Sandreas.hansson@arm.com stats.averageReadBW = stats.totalReadBytes / simSeconds; 4098981Sandreas.hansson@arm.com 4108981Sandreas.hansson@arm.com // Stats based on successfully sent requests 4118981Sandreas.hansson@arm.com stats.writeBandwidthHist 4128981Sandreas.hansson@arm.com .init(params()->bandwidth_bins) 4138981Sandreas.hansson@arm.com .name(name() + ".writeBandwidthHist") 4148981Sandreas.hansson@arm.com .desc("Histogram of write bandwidth (bytes/s)") 4158981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? (pdf | nozero) : pdf); 4168981Sandreas.hansson@arm.com 4178981Sandreas.hansson@arm.com stats.averageWriteBW 4188981Sandreas.hansson@arm.com .name(name() + ".averageWriteBandwidth") 4198981Sandreas.hansson@arm.com .desc("Average write bandwidth (bytes/s)") 4208981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4218981Sandreas.hansson@arm.com 4228981Sandreas.hansson@arm.com stats.totalWrittenBytes 4238981Sandreas.hansson@arm.com .name(name() + ".totalWrittenBytes") 4248981Sandreas.hansson@arm.com .desc("Number of bytes written") 4258981Sandreas.hansson@arm.com .flags(stats.disableBandwidthHists ? nozero : pdf); 4268981Sandreas.hansson@arm.com 4278981Sandreas.hansson@arm.com stats.averageWriteBW = stats.totalWrittenBytes / simSeconds; 4288981Sandreas.hansson@arm.com 4298981Sandreas.hansson@arm.com stats.readLatencyHist 4308981Sandreas.hansson@arm.com .init(params()->latency_bins) 4318981Sandreas.hansson@arm.com .name(name() + ".readLatencyHist") 4328981Sandreas.hansson@arm.com .desc("Read request-response latency") 4338981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 4348981Sandreas.hansson@arm.com 4358981Sandreas.hansson@arm.com stats.writeLatencyHist 4368981Sandreas.hansson@arm.com .init(params()->latency_bins) 4378981Sandreas.hansson@arm.com .name(name() + ".writeLatencyHist") 4388981Sandreas.hansson@arm.com .desc("Write request-response latency") 4398981Sandreas.hansson@arm.com .flags(stats.disableLatencyHists ? nozero : pdf); 4408981Sandreas.hansson@arm.com 4418981Sandreas.hansson@arm.com stats.ittReadRead 4428981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4438981Sandreas.hansson@arm.com params()->itt_bins) 4448981Sandreas.hansson@arm.com .name(name() + ".ittReadRead") 4458981Sandreas.hansson@arm.com .desc("Read-to-read inter transaction time") 4468981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4478981Sandreas.hansson@arm.com 4488981Sandreas.hansson@arm.com stats.ittWriteWrite 4498981Sandreas.hansson@arm.com .init(1, params()->itt_max_bin, params()->itt_max_bin / 4508981Sandreas.hansson@arm.com params()->itt_bins) 4518981Sandreas.hansson@arm.com .name(name() + ".ittWriteWrite") 4528981Sandreas.hansson@arm.com .desc("Write-to-write inter transaction time") 4538981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4548981Sandreas.hansson@arm.com 4558981Sandreas.hansson@arm.com stats.ittReqReq 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() + ".ittReqReq") 4598981Sandreas.hansson@arm.com .desc("Request-to-request inter transaction time") 4608981Sandreas.hansson@arm.com .flags(stats.disableITTDists ? nozero : pdf); 4618981Sandreas.hansson@arm.com 4628981Sandreas.hansson@arm.com stats.outstandingReadsHist 4638981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 4648981Sandreas.hansson@arm.com .name(name() + ".outstandingReadsHist") 4658981Sandreas.hansson@arm.com .desc("Outstanding read transactions") 4668981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 4678981Sandreas.hansson@arm.com 4688981Sandreas.hansson@arm.com stats.outstandingWritesHist 4698981Sandreas.hansson@arm.com .init(params()->outstanding_bins) 4708981Sandreas.hansson@arm.com .name(name() + ".outstandingWritesHist") 4718981Sandreas.hansson@arm.com .desc("Outstanding write transactions") 4728981Sandreas.hansson@arm.com .flags(stats.disableOutstandingHists ? nozero : pdf); 4738981Sandreas.hansson@arm.com 4748981Sandreas.hansson@arm.com stats.readTransHist 4758981Sandreas.hansson@arm.com .init(params()->transaction_bins) 4768981Sandreas.hansson@arm.com .name(name() + ".readTransHist") 4778981Sandreas.hansson@arm.com .desc("Histogram of read transactions per sample period") 4788981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 4798981Sandreas.hansson@arm.com 4808981Sandreas.hansson@arm.com stats.writeTransHist 4818981Sandreas.hansson@arm.com .init(params()->transaction_bins) 4828981Sandreas.hansson@arm.com .name(name() + ".writeTransHist") 4838981Sandreas.hansson@arm.com .desc("Histogram of read transactions per sample period") 4848981Sandreas.hansson@arm.com .flags(stats.disableTransactionHists ? nozero : pdf); 4858981Sandreas.hansson@arm.com 4868981Sandreas.hansson@arm.com stats.readAddrDist 4878981Sandreas.hansson@arm.com .init(0) 4888981Sandreas.hansson@arm.com .name(name() + ".readAddrDist") 4898981Sandreas.hansson@arm.com .desc("Read address distribution") 4908981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 4918981Sandreas.hansson@arm.com 4928981Sandreas.hansson@arm.com stats.writeAddrDist 4938981Sandreas.hansson@arm.com .init(0) 4948981Sandreas.hansson@arm.com .name(name() + ".writeAddrDist") 4958981Sandreas.hansson@arm.com .desc("Write address distribution") 4968981Sandreas.hansson@arm.com .flags(stats.disableAddrDists ? nozero : pdf); 4978981Sandreas.hansson@arm.com} 4988981Sandreas.hansson@arm.com 4998981Sandreas.hansson@arm.comvoid 5008981Sandreas.hansson@arm.comCommMonitor::samplePeriodic() 5018981Sandreas.hansson@arm.com{ 5028981Sandreas.hansson@arm.com // the periodic stats update runs on the granularity of sample 5038981Sandreas.hansson@arm.com // periods, but in combination with this there may also be a 5048981Sandreas.hansson@arm.com // external resets and dumps of the stats (through schedStatEvent) 5058981Sandreas.hansson@arm.com // causing the stats themselves to capture less than a sample 5068981Sandreas.hansson@arm.com // period 5078981Sandreas.hansson@arm.com 5088981Sandreas.hansson@arm.com // only capture if we have not reset the stats during the last 5098981Sandreas.hansson@arm.com // sample period 5108981Sandreas.hansson@arm.com if (simTicks.value() >= samplePeriodTicks) { 5118981Sandreas.hansson@arm.com if (!stats.disableTransactionHists) { 5128981Sandreas.hansson@arm.com stats.readTransHist.sample(stats.readTrans); 5138981Sandreas.hansson@arm.com stats.writeTransHist.sample(stats.writeTrans); 5148981Sandreas.hansson@arm.com } 5158981Sandreas.hansson@arm.com 5168981Sandreas.hansson@arm.com if (!stats.disableBandwidthHists) { 5178981Sandreas.hansson@arm.com stats.readBandwidthHist.sample(stats.readBytes / samplePeriod); 5188981Sandreas.hansson@arm.com stats.writeBandwidthHist.sample(stats.writtenBytes / samplePeriod); 5198981Sandreas.hansson@arm.com } 5208981Sandreas.hansson@arm.com 5218981Sandreas.hansson@arm.com if (!stats.disableOutstandingHists) { 5228981Sandreas.hansson@arm.com stats.outstandingReadsHist.sample(stats.outstandingReadReqs); 5238981Sandreas.hansson@arm.com stats.outstandingWritesHist.sample(stats.outstandingWriteReqs); 5248981Sandreas.hansson@arm.com } 5258981Sandreas.hansson@arm.com } 5268981Sandreas.hansson@arm.com 5278981Sandreas.hansson@arm.com // reset the sampled values 5288981Sandreas.hansson@arm.com stats.readTrans = 0; 5298981Sandreas.hansson@arm.com stats.writeTrans = 0; 5308981Sandreas.hansson@arm.com 5318981Sandreas.hansson@arm.com stats.readBytes = 0; 5328981Sandreas.hansson@arm.com stats.writtenBytes = 0; 5338981Sandreas.hansson@arm.com 5348981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 5358981Sandreas.hansson@arm.com} 5368981Sandreas.hansson@arm.com 5378981Sandreas.hansson@arm.comvoid 5388981Sandreas.hansson@arm.comCommMonitor::startup() 5398981Sandreas.hansson@arm.com{ 5408981Sandreas.hansson@arm.com schedule(samplePeriodicEvent, curTick() + samplePeriodTicks); 5418981Sandreas.hansson@arm.com} 542