bridge.cc revision 11334
12568SN/A/* 211192Sandreas.hansson@arm.com * Copyright (c) 2011-2013, 2015 ARM Limited 38713Sandreas.hansson@arm.com * All rights reserved 48713Sandreas.hansson@arm.com * 58713Sandreas.hansson@arm.com * The license below extends only to copyright in the software and shall 68713Sandreas.hansson@arm.com * not be construed as granting a license to any other intellectual 78713Sandreas.hansson@arm.com * property including but not limited to intellectual property relating 88713Sandreas.hansson@arm.com * to a hardware implementation of the functionality of the software 98713Sandreas.hansson@arm.com * licensed hereunder. You may use the software subject to the license 108713Sandreas.hansson@arm.com * terms below provided that you ensure that this notice is replicated 118713Sandreas.hansson@arm.com * unmodified and in its entirety in all distributions of the software, 128713Sandreas.hansson@arm.com * modified or unmodified, in source code or in binary form. 138713Sandreas.hansson@arm.com * 142568SN/A * Copyright (c) 2006 The Regents of The University of Michigan 152568SN/A * All rights reserved. 162568SN/A * 172568SN/A * Redistribution and use in source and binary forms, with or without 182568SN/A * modification, are permitted provided that the following conditions are 192568SN/A * met: redistributions of source code must retain the above copyright 202568SN/A * notice, this list of conditions and the following disclaimer; 212568SN/A * redistributions in binary form must reproduce the above copyright 222568SN/A * notice, this list of conditions and the following disclaimer in the 232568SN/A * documentation and/or other materials provided with the distribution; 242568SN/A * neither the name of the copyright holders nor the names of its 252568SN/A * contributors may be used to endorse or promote products derived from 262568SN/A * this software without specific prior written permission. 272568SN/A * 282568SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 292568SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 302568SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 312568SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 322568SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 332568SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 342568SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 352568SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 362568SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 372568SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 382568SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 392665Ssaidi@eecs.umich.edu * 402665Ssaidi@eecs.umich.edu * Authors: Ali Saidi 412665Ssaidi@eecs.umich.edu * Steve Reinhardt 428713Sandreas.hansson@arm.com * Andreas Hansson 432568SN/A */ 442568SN/A 452568SN/A/** 462982Sstever@eecs.umich.edu * @file 4710405Sandreas.hansson@arm.com * Implementation of a memory-mapped bridge that connects a master 488713Sandreas.hansson@arm.com * and a slave through a request and response queue. 492568SN/A */ 502568SN/A 512568SN/A#include "base/trace.hh" 529164Sandreas.hansson@arm.com#include "debug/Bridge.hh" 532568SN/A#include "mem/bridge.hh" 544762Snate@binkert.org#include "params/Bridge.hh" 552568SN/A 569164Sandreas.hansson@arm.comBridge::BridgeSlavePort::BridgeSlavePort(const std::string& _name, 579164Sandreas.hansson@arm.com Bridge& _bridge, 588851Sandreas.hansson@arm.com BridgeMasterPort& _masterPort, 599180Sandreas.hansson@arm.com Cycles _delay, int _resp_limit, 609235Sandreas.hansson@arm.com std::vector<AddrRange> _ranges) 619164Sandreas.hansson@arm.com : SlavePort(_name, &_bridge), bridge(_bridge), masterPort(_masterPort), 629164Sandreas.hansson@arm.com delay(_delay), ranges(_ranges.begin(), _ranges.end()), 639164Sandreas.hansson@arm.com outstandingResponses(0), retryReq(false), 648851Sandreas.hansson@arm.com respQueueLimit(_resp_limit), sendEvent(*this) 658713Sandreas.hansson@arm.com{ 668713Sandreas.hansson@arm.com} 678713Sandreas.hansson@arm.com 689164Sandreas.hansson@arm.comBridge::BridgeMasterPort::BridgeMasterPort(const std::string& _name, 699164Sandreas.hansson@arm.com Bridge& _bridge, 708851Sandreas.hansson@arm.com BridgeSlavePort& _slavePort, 719180Sandreas.hansson@arm.com Cycles _delay, int _req_limit) 729164Sandreas.hansson@arm.com : MasterPort(_name, &_bridge), bridge(_bridge), slavePort(_slavePort), 739164Sandreas.hansson@arm.com delay(_delay), reqQueueLimit(_req_limit), sendEvent(*this) 742643Sstever@eecs.umich.edu{ 752643Sstever@eecs.umich.edu} 762643Sstever@eecs.umich.edu 774435Ssaidi@eecs.umich.eduBridge::Bridge(Params *p) 785034Smilesck@eecs.umich.edu : MemObject(p), 799180Sandreas.hansson@arm.com slavePort(p->name + ".slave", *this, masterPort, 809180Sandreas.hansson@arm.com ticksToCycles(p->delay), p->resp_size, p->ranges), 819180Sandreas.hansson@arm.com masterPort(p->name + ".master", *this, slavePort, 829180Sandreas.hansson@arm.com ticksToCycles(p->delay), p->req_size) 832643Sstever@eecs.umich.edu{ 842643Sstever@eecs.umich.edu} 852643Sstever@eecs.umich.edu 869294Sandreas.hansson@arm.comBaseMasterPort& 879294Sandreas.hansson@arm.comBridge::getMasterPort(const std::string &if_name, PortID idx) 888922Swilliam.wang@arm.com{ 898922Swilliam.wang@arm.com if (if_name == "master") 908922Swilliam.wang@arm.com return masterPort; 918922Swilliam.wang@arm.com else 928922Swilliam.wang@arm.com // pass it along to our super class 938922Swilliam.wang@arm.com return MemObject::getMasterPort(if_name, idx); 948922Swilliam.wang@arm.com} 958922Swilliam.wang@arm.com 969294Sandreas.hansson@arm.comBaseSlavePort& 979294Sandreas.hansson@arm.comBridge::getSlavePort(const std::string &if_name, PortID idx) 982643Sstever@eecs.umich.edu{ 998713Sandreas.hansson@arm.com if (if_name == "slave") 1008922Swilliam.wang@arm.com return slavePort; 1018922Swilliam.wang@arm.com else 1028922Swilliam.wang@arm.com // pass it along to our super class 1038922Swilliam.wang@arm.com return MemObject::getSlavePort(if_name, idx); 1042643Sstever@eecs.umich.edu} 1052643Sstever@eecs.umich.edu 1062568SN/Avoid 1072568SN/ABridge::init() 1082568SN/A{ 1098713Sandreas.hansson@arm.com // make sure both sides are connected and have the same block size 1108713Sandreas.hansson@arm.com if (!slavePort.isConnected() || !masterPort.isConnected()) 11110405Sandreas.hansson@arm.com fatal("Both ports of a bridge must be connected.\n"); 1124432Ssaidi@eecs.umich.edu 1138713Sandreas.hansson@arm.com // notify the master side of our address ranges 1148713Sandreas.hansson@arm.com slavePort.sendRangeChange(); 1152568SN/A} 1162568SN/A 1174433Ssaidi@eecs.umich.edubool 1189786Sandreas.hansson@arm.comBridge::BridgeSlavePort::respQueueFull() const 1194433Ssaidi@eecs.umich.edu{ 1208713Sandreas.hansson@arm.com return outstandingResponses == respQueueLimit; 1214435Ssaidi@eecs.umich.edu} 1224435Ssaidi@eecs.umich.edu 1234435Ssaidi@eecs.umich.edubool 1249786Sandreas.hansson@arm.comBridge::BridgeMasterPort::reqQueueFull() const 1254435Ssaidi@eecs.umich.edu{ 1269164Sandreas.hansson@arm.com return transmitList.size() == reqQueueLimit; 1274433Ssaidi@eecs.umich.edu} 1282568SN/A 1292568SN/Abool 1308975Sandreas.hansson@arm.comBridge::BridgeMasterPort::recvTimingResp(PacketPtr pkt) 1312568SN/A{ 1328713Sandreas.hansson@arm.com // all checks are done when the request is accepted on the slave 1338713Sandreas.hansson@arm.com // side, so we are guaranteed to have space for the response 1349164Sandreas.hansson@arm.com DPRINTF(Bridge, "recvTimingResp: %s addr 0x%x\n", 1358949Sandreas.hansson@arm.com pkt->cmdString(), pkt->getAddr()); 1362643Sstever@eecs.umich.edu 1379164Sandreas.hansson@arm.com DPRINTF(Bridge, "Request queue size: %d\n", transmitList.size()); 1384450Ssaidi@eecs.umich.edu 13911193Sandreas.hansson@arm.com // technically the packet only reaches us after the header delay, 14011193Sandreas.hansson@arm.com // and typically we also need to deserialise any payload (unless 14111193Sandreas.hansson@arm.com // the two sides of the bridge are synchronous) 14211193Sandreas.hansson@arm.com Tick receive_delay = pkt->headerDelay + pkt->payloadDelay; 14310694SMarco.Balboni@ARM.com pkt->headerDelay = pkt->payloadDelay = 0; 1449549Sandreas.hansson@arm.com 14511193Sandreas.hansson@arm.com slavePort.schedTimingResp(pkt, bridge.clockEdge(delay) + 14611193Sandreas.hansson@arm.com receive_delay); 1478713Sandreas.hansson@arm.com 1488713Sandreas.hansson@arm.com return true; 1498713Sandreas.hansson@arm.com} 1508713Sandreas.hansson@arm.com 1518713Sandreas.hansson@arm.combool 1528975Sandreas.hansson@arm.comBridge::BridgeSlavePort::recvTimingReq(PacketPtr pkt) 1538713Sandreas.hansson@arm.com{ 1549164Sandreas.hansson@arm.com DPRINTF(Bridge, "recvTimingReq: %s addr 0x%x\n", 1558949Sandreas.hansson@arm.com pkt->cmdString(), pkt->getAddr()); 1568713Sandreas.hansson@arm.com 15711334Sandreas.hansson@arm.com panic_if(pkt->cacheResponding(), "Should not see packets where cache " 15811334Sandreas.hansson@arm.com "is responding"); 15911192Sandreas.hansson@arm.com 16011192Sandreas.hansson@arm.com // we should not get a new request after committing to retry the 16111192Sandreas.hansson@arm.com // current one, but unfortunately the CPU violates this rule, so 16211192Sandreas.hansson@arm.com // simply ignore it for now 16311192Sandreas.hansson@arm.com if (retryReq) 16411192Sandreas.hansson@arm.com return false; 1659164Sandreas.hansson@arm.com 1669164Sandreas.hansson@arm.com DPRINTF(Bridge, "Response queue size: %d outresp: %d\n", 1679164Sandreas.hansson@arm.com transmitList.size(), outstandingResponses); 1688713Sandreas.hansson@arm.com 1699786Sandreas.hansson@arm.com // if the request queue is full then there is no hope 1708851Sandreas.hansson@arm.com if (masterPort.reqQueueFull()) { 1719164Sandreas.hansson@arm.com DPRINTF(Bridge, "Request queue full\n"); 1729164Sandreas.hansson@arm.com retryReq = true; 1739786Sandreas.hansson@arm.com } else { 1749786Sandreas.hansson@arm.com // look at the response queue if we expect to see a response 17511192Sandreas.hansson@arm.com bool expects_response = pkt->needsResponse(); 1769786Sandreas.hansson@arm.com if (expects_response) { 1779786Sandreas.hansson@arm.com if (respQueueFull()) { 1789786Sandreas.hansson@arm.com DPRINTF(Bridge, "Response queue full\n"); 1799786Sandreas.hansson@arm.com retryReq = true; 1809786Sandreas.hansson@arm.com } else { 1819786Sandreas.hansson@arm.com // ok to send the request with space for the response 1829786Sandreas.hansson@arm.com DPRINTF(Bridge, "Reserving space for response\n"); 1839786Sandreas.hansson@arm.com assert(outstandingResponses != respQueueLimit); 1849786Sandreas.hansson@arm.com ++outstandingResponses; 1859549Sandreas.hansson@arm.com 1869786Sandreas.hansson@arm.com // no need to set retryReq to false as this is already the 1879786Sandreas.hansson@arm.com // case 1889786Sandreas.hansson@arm.com } 1899786Sandreas.hansson@arm.com } 1909786Sandreas.hansson@arm.com 1919786Sandreas.hansson@arm.com if (!retryReq) { 19211193Sandreas.hansson@arm.com // technically the packet only reaches us after the header 19311193Sandreas.hansson@arm.com // delay, and typically we also need to deserialise any 19411193Sandreas.hansson@arm.com // payload (unless the two sides of the bridge are 19511193Sandreas.hansson@arm.com // synchronous) 19611193Sandreas.hansson@arm.com Tick receive_delay = pkt->headerDelay + pkt->payloadDelay; 19710694SMarco.Balboni@ARM.com pkt->headerDelay = pkt->payloadDelay = 0; 1989549Sandreas.hansson@arm.com 19911193Sandreas.hansson@arm.com masterPort.schedTimingReq(pkt, bridge.clockEdge(delay) + 20011193Sandreas.hansson@arm.com receive_delay); 2014433Ssaidi@eecs.umich.edu } 2025562Snate@binkert.org } 2034433Ssaidi@eecs.umich.edu 2049164Sandreas.hansson@arm.com // remember that we are now stalling a packet and that we have to 2059164Sandreas.hansson@arm.com // tell the sending master to retry once space becomes available, 2069164Sandreas.hansson@arm.com // we make no distinction whether the stalling is due to the 2079164Sandreas.hansson@arm.com // request queue or response queue being full 2089164Sandreas.hansson@arm.com return !retryReq; 2092657Ssaidi@eecs.umich.edu} 2102657Ssaidi@eecs.umich.edu 2114433Ssaidi@eecs.umich.eduvoid 2129164Sandreas.hansson@arm.comBridge::BridgeSlavePort::retryStalledReq() 2134433Ssaidi@eecs.umich.edu{ 2149164Sandreas.hansson@arm.com if (retryReq) { 2159164Sandreas.hansson@arm.com DPRINTF(Bridge, "Request waiting for retry, now retrying\n"); 2169164Sandreas.hansson@arm.com retryReq = false; 21710713Sandreas.hansson@arm.com sendRetryReq(); 2184433Ssaidi@eecs.umich.edu } 2194433Ssaidi@eecs.umich.edu} 2204433Ssaidi@eecs.umich.edu 2214433Ssaidi@eecs.umich.eduvoid 2229164Sandreas.hansson@arm.comBridge::BridgeMasterPort::schedTimingReq(PacketPtr pkt, Tick when) 2232657Ssaidi@eecs.umich.edu{ 2242643Sstever@eecs.umich.edu // If we're about to put this packet at the head of the queue, we 2252643Sstever@eecs.umich.edu // need to schedule an event to do the transmit. Otherwise there 2262643Sstever@eecs.umich.edu // should already be an event scheduled for sending the head 2272643Sstever@eecs.umich.edu // packet. 2289164Sandreas.hansson@arm.com if (transmitList.empty()) { 2299164Sandreas.hansson@arm.com bridge.schedule(sendEvent, when); 2302568SN/A } 2318713Sandreas.hansson@arm.com 2329164Sandreas.hansson@arm.com assert(transmitList.size() != reqQueueLimit); 2338713Sandreas.hansson@arm.com 23410922Sandreas.hansson@arm.com transmitList.emplace_back(pkt, when); 2358713Sandreas.hansson@arm.com} 2368713Sandreas.hansson@arm.com 2378713Sandreas.hansson@arm.com 2388713Sandreas.hansson@arm.comvoid 2399164Sandreas.hansson@arm.comBridge::BridgeSlavePort::schedTimingResp(PacketPtr pkt, Tick when) 2408713Sandreas.hansson@arm.com{ 2418713Sandreas.hansson@arm.com // If we're about to put this packet at the head of the queue, we 2428713Sandreas.hansson@arm.com // need to schedule an event to do the transmit. Otherwise there 2438713Sandreas.hansson@arm.com // should already be an event scheduled for sending the head 2448713Sandreas.hansson@arm.com // packet. 2459164Sandreas.hansson@arm.com if (transmitList.empty()) { 2469164Sandreas.hansson@arm.com bridge.schedule(sendEvent, when); 2478713Sandreas.hansson@arm.com } 2489164Sandreas.hansson@arm.com 24910922Sandreas.hansson@arm.com transmitList.emplace_back(pkt, when); 2502568SN/A} 2512568SN/A 2522568SN/Avoid 2539164Sandreas.hansson@arm.comBridge::BridgeMasterPort::trySendTiming() 2542568SN/A{ 2559164Sandreas.hansson@arm.com assert(!transmitList.empty()); 2562568SN/A 2579164Sandreas.hansson@arm.com DeferredPacket req = transmitList.front(); 2582643Sstever@eecs.umich.edu 2599164Sandreas.hansson@arm.com assert(req.tick <= curTick()); 2602643Sstever@eecs.umich.edu 2619029Sandreas.hansson@arm.com PacketPtr pkt = req.pkt; 2622643Sstever@eecs.umich.edu 2639164Sandreas.hansson@arm.com DPRINTF(Bridge, "trySend request addr 0x%x, queue size %d\n", 2649164Sandreas.hansson@arm.com pkt->getAddr(), transmitList.size()); 2654432Ssaidi@eecs.umich.edu 2668975Sandreas.hansson@arm.com if (sendTimingReq(pkt)) { 2672643Sstever@eecs.umich.edu // send successful 2689164Sandreas.hansson@arm.com transmitList.pop_front(); 2699164Sandreas.hansson@arm.com DPRINTF(Bridge, "trySend request successful\n"); 2702657Ssaidi@eecs.umich.edu 2712657Ssaidi@eecs.umich.edu // If there are more packets to send, schedule event to try again. 2729164Sandreas.hansson@arm.com if (!transmitList.empty()) { 2739786Sandreas.hansson@arm.com DeferredPacket next_req = transmitList.front(); 2749164Sandreas.hansson@arm.com DPRINTF(Bridge, "Scheduling next send\n"); 2759786Sandreas.hansson@arm.com bridge.schedule(sendEvent, std::max(next_req.tick, 2769648Sdam.sunwoo@arm.com bridge.clockEdge())); 2772657Ssaidi@eecs.umich.edu } 2789164Sandreas.hansson@arm.com 2799164Sandreas.hansson@arm.com // if we have stalled a request due to a full request queue, 2809164Sandreas.hansson@arm.com // then send a retry at this point, also note that if the 2819164Sandreas.hansson@arm.com // request we stalled was waiting for the response queue 2829164Sandreas.hansson@arm.com // rather than the request queue we might stall it again 2839164Sandreas.hansson@arm.com slavePort.retryStalledReq(); 2842643Sstever@eecs.umich.edu } 2854986Ssaidi@eecs.umich.edu 2869164Sandreas.hansson@arm.com // if the send failed, then we try again once we receive a retry, 2879164Sandreas.hansson@arm.com // and therefore there is no need to take any action 2882568SN/A} 2892568SN/A 2908713Sandreas.hansson@arm.comvoid 2919164Sandreas.hansson@arm.comBridge::BridgeSlavePort::trySendTiming() 2928713Sandreas.hansson@arm.com{ 2939164Sandreas.hansson@arm.com assert(!transmitList.empty()); 2948713Sandreas.hansson@arm.com 2959164Sandreas.hansson@arm.com DeferredPacket resp = transmitList.front(); 2968713Sandreas.hansson@arm.com 2979164Sandreas.hansson@arm.com assert(resp.tick <= curTick()); 2988713Sandreas.hansson@arm.com 2999029Sandreas.hansson@arm.com PacketPtr pkt = resp.pkt; 3008713Sandreas.hansson@arm.com 3019164Sandreas.hansson@arm.com DPRINTF(Bridge, "trySend response addr 0x%x, outstanding %d\n", 3029164Sandreas.hansson@arm.com pkt->getAddr(), outstandingResponses); 3038713Sandreas.hansson@arm.com 3048975Sandreas.hansson@arm.com if (sendTimingResp(pkt)) { 3058713Sandreas.hansson@arm.com // send successful 3069164Sandreas.hansson@arm.com transmitList.pop_front(); 3079164Sandreas.hansson@arm.com DPRINTF(Bridge, "trySend response successful\n"); 3088713Sandreas.hansson@arm.com 3099164Sandreas.hansson@arm.com assert(outstandingResponses != 0); 3109164Sandreas.hansson@arm.com --outstandingResponses; 3119164Sandreas.hansson@arm.com 3129164Sandreas.hansson@arm.com // If there are more packets to send, schedule event to try again. 3139164Sandreas.hansson@arm.com if (!transmitList.empty()) { 3149786Sandreas.hansson@arm.com DeferredPacket next_resp = transmitList.front(); 3159164Sandreas.hansson@arm.com DPRINTF(Bridge, "Scheduling next send\n"); 3169786Sandreas.hansson@arm.com bridge.schedule(sendEvent, std::max(next_resp.tick, 3179648Sdam.sunwoo@arm.com bridge.clockEdge())); 3188713Sandreas.hansson@arm.com } 3198713Sandreas.hansson@arm.com 3209164Sandreas.hansson@arm.com // if there is space in the request queue and we were stalling 3219164Sandreas.hansson@arm.com // a request, it will definitely be possible to accept it now 3229164Sandreas.hansson@arm.com // since there is guaranteed space in the response queue 3239164Sandreas.hansson@arm.com if (!masterPort.reqQueueFull() && retryReq) { 3249164Sandreas.hansson@arm.com DPRINTF(Bridge, "Request waiting for retry, now retrying\n"); 3259164Sandreas.hansson@arm.com retryReq = false; 32610713Sandreas.hansson@arm.com sendRetryReq(); 3278713Sandreas.hansson@arm.com } 3288713Sandreas.hansson@arm.com } 3298713Sandreas.hansson@arm.com 3309164Sandreas.hansson@arm.com // if the send failed, then we try again once we receive a retry, 3319164Sandreas.hansson@arm.com // and therefore there is no need to take any action 3328713Sandreas.hansson@arm.com} 3332568SN/A 3342657Ssaidi@eecs.umich.eduvoid 33510713Sandreas.hansson@arm.comBridge::BridgeMasterPort::recvReqRetry() 3362568SN/A{ 3379786Sandreas.hansson@arm.com trySendTiming(); 3382568SN/A} 3392568SN/A 3408713Sandreas.hansson@arm.comvoid 34110713Sandreas.hansson@arm.comBridge::BridgeSlavePort::recvRespRetry() 3422568SN/A{ 3439786Sandreas.hansson@arm.com trySendTiming(); 3442568SN/A} 3452568SN/A 3468713Sandreas.hansson@arm.comTick 3478713Sandreas.hansson@arm.comBridge::BridgeSlavePort::recvAtomic(PacketPtr pkt) 3488713Sandreas.hansson@arm.com{ 34911334Sandreas.hansson@arm.com panic_if(pkt->cacheResponding(), "Should not see packets where cache " 35011334Sandreas.hansson@arm.com "is responding"); 35111334Sandreas.hansson@arm.com 3529180Sandreas.hansson@arm.com return delay * bridge.clockPeriod() + masterPort.sendAtomic(pkt); 3538713Sandreas.hansson@arm.com} 3548713Sandreas.hansson@arm.com 3552568SN/Avoid 3568713Sandreas.hansson@arm.comBridge::BridgeSlavePort::recvFunctional(PacketPtr pkt) 3572568SN/A{ 3585314Sstever@gmail.com pkt->pushLabel(name()); 3595314Sstever@gmail.com 3608713Sandreas.hansson@arm.com // check the response queue 3619786Sandreas.hansson@arm.com for (auto i = transmitList.begin(); i != transmitList.end(); ++i) { 3629029Sandreas.hansson@arm.com if (pkt->checkFunctional((*i).pkt)) { 3637668Ssteve.reinhardt@amd.com pkt->makeResponse(); 3644626Sstever@eecs.umich.edu return; 3657668Ssteve.reinhardt@amd.com } 3662568SN/A } 3672568SN/A 3688713Sandreas.hansson@arm.com // also check the master port's request queue 3698851Sandreas.hansson@arm.com if (masterPort.checkFunctional(pkt)) { 3708713Sandreas.hansson@arm.com return; 3718713Sandreas.hansson@arm.com } 3728713Sandreas.hansson@arm.com 3735314Sstever@gmail.com pkt->popLabel(); 3745314Sstever@gmail.com 3754626Sstever@eecs.umich.edu // fall through if pkt still not satisfied 3768851Sandreas.hansson@arm.com masterPort.sendFunctional(pkt); 3778713Sandreas.hansson@arm.com} 3788713Sandreas.hansson@arm.com 3798713Sandreas.hansson@arm.combool 3808713Sandreas.hansson@arm.comBridge::BridgeMasterPort::checkFunctional(PacketPtr pkt) 3818713Sandreas.hansson@arm.com{ 3828713Sandreas.hansson@arm.com bool found = false; 3839786Sandreas.hansson@arm.com auto i = transmitList.begin(); 3848713Sandreas.hansson@arm.com 38511321Ssteve.reinhardt@amd.com while (i != transmitList.end() && !found) { 3869029Sandreas.hansson@arm.com if (pkt->checkFunctional((*i).pkt)) { 3878713Sandreas.hansson@arm.com pkt->makeResponse(); 3888713Sandreas.hansson@arm.com found = true; 3898713Sandreas.hansson@arm.com } 3908713Sandreas.hansson@arm.com ++i; 3918713Sandreas.hansson@arm.com } 3928713Sandreas.hansson@arm.com 3938713Sandreas.hansson@arm.com return found; 3942568SN/A} 3952568SN/A 3968711Sandreas.hansson@arm.comAddrRangeList 3979090Sandreas.hansson@arm.comBridge::BridgeSlavePort::getAddrRanges() const 3982568SN/A{ 3998711Sandreas.hansson@arm.com return ranges; 4002568SN/A} 4012568SN/A 4024762Snate@binkert.orgBridge * 4034762Snate@binkert.orgBridgeParams::create() 4042568SN/A{ 4054762Snate@binkert.org return new Bridge(this); 4062568SN/A} 407