bridge.cc revision 9542
12568SN/A/* 28922Swilliam.wang@arm.com * Copyright (c) 2011-2012 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 478713Sandreas.hansson@arm.com * Implementation of a memory-mapped bus 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()) 1114432Ssaidi@eecs.umich.edu fatal("Both ports of bus bridge are not connected to a bus.\n"); 1124432Ssaidi@eecs.umich.edu 1138713Sandreas.hansson@arm.com if (slavePort.peerBlockSize() != masterPort.peerBlockSize()) 1148713Sandreas.hansson@arm.com fatal("Slave port size %d, master port size %d \n " \ 1156764SBrad.Beckmann@amd.com "Busses don't have the same block size... Not supported.\n", 1168713Sandreas.hansson@arm.com slavePort.peerBlockSize(), masterPort.peerBlockSize()); 1178713Sandreas.hansson@arm.com 1188713Sandreas.hansson@arm.com // notify the master side of our address ranges 1198713Sandreas.hansson@arm.com slavePort.sendRangeChange(); 1202568SN/A} 1212568SN/A 1224433Ssaidi@eecs.umich.edubool 1238713Sandreas.hansson@arm.comBridge::BridgeSlavePort::respQueueFull() 1244433Ssaidi@eecs.umich.edu{ 1258713Sandreas.hansson@arm.com return outstandingResponses == respQueueLimit; 1264435Ssaidi@eecs.umich.edu} 1274435Ssaidi@eecs.umich.edu 1284435Ssaidi@eecs.umich.edubool 1298713Sandreas.hansson@arm.comBridge::BridgeMasterPort::reqQueueFull() 1304435Ssaidi@eecs.umich.edu{ 1319164Sandreas.hansson@arm.com return transmitList.size() == reqQueueLimit; 1324433Ssaidi@eecs.umich.edu} 1332568SN/A 1342568SN/Abool 1358975Sandreas.hansson@arm.comBridge::BridgeMasterPort::recvTimingResp(PacketPtr pkt) 1362568SN/A{ 1378713Sandreas.hansson@arm.com // all checks are done when the request is accepted on the slave 1388713Sandreas.hansson@arm.com // side, so we are guaranteed to have space for the response 1399164Sandreas.hansson@arm.com DPRINTF(Bridge, "recvTimingResp: %s addr 0x%x\n", 1408949Sandreas.hansson@arm.com pkt->cmdString(), pkt->getAddr()); 1412643Sstever@eecs.umich.edu 1429164Sandreas.hansson@arm.com DPRINTF(Bridge, "Request queue size: %d\n", transmitList.size()); 1434450Ssaidi@eecs.umich.edu 1449180Sandreas.hansson@arm.com slavePort.schedTimingResp(pkt, bridge.clockEdge(delay)); 1458713Sandreas.hansson@arm.com 1468713Sandreas.hansson@arm.com return true; 1478713Sandreas.hansson@arm.com} 1488713Sandreas.hansson@arm.com 1498713Sandreas.hansson@arm.combool 1508975Sandreas.hansson@arm.comBridge::BridgeSlavePort::recvTimingReq(PacketPtr pkt) 1518713Sandreas.hansson@arm.com{ 1529164Sandreas.hansson@arm.com DPRINTF(Bridge, "recvTimingReq: %s addr 0x%x\n", 1538949Sandreas.hansson@arm.com pkt->cmdString(), pkt->getAddr()); 1548713Sandreas.hansson@arm.com 1559164Sandreas.hansson@arm.com // ensure we do not have something waiting to retry 1569164Sandreas.hansson@arm.com if(retryReq) 1579164Sandreas.hansson@arm.com return false; 1589164Sandreas.hansson@arm.com 1599164Sandreas.hansson@arm.com DPRINTF(Bridge, "Response queue size: %d outresp: %d\n", 1609164Sandreas.hansson@arm.com transmitList.size(), outstandingResponses); 1618713Sandreas.hansson@arm.com 1628851Sandreas.hansson@arm.com if (masterPort.reqQueueFull()) { 1639164Sandreas.hansson@arm.com DPRINTF(Bridge, "Request queue full\n"); 1649164Sandreas.hansson@arm.com retryReq = true; 1659164Sandreas.hansson@arm.com } else if (pkt->needsResponse()) { 1664435Ssaidi@eecs.umich.edu if (respQueueFull()) { 1679164Sandreas.hansson@arm.com DPRINTF(Bridge, "Response queue full\n"); 1689164Sandreas.hansson@arm.com retryReq = true; 1694433Ssaidi@eecs.umich.edu } else { 1709164Sandreas.hansson@arm.com DPRINTF(Bridge, "Reserving space for response\n"); 1718713Sandreas.hansson@arm.com assert(outstandingResponses != respQueueLimit); 1724433Ssaidi@eecs.umich.edu ++outstandingResponses; 1739164Sandreas.hansson@arm.com retryReq = false; 1749180Sandreas.hansson@arm.com masterPort.schedTimingReq(pkt, bridge.clockEdge(delay)); 1754433Ssaidi@eecs.umich.edu } 1765562Snate@binkert.org } 1774433Ssaidi@eecs.umich.edu 1789164Sandreas.hansson@arm.com // remember that we are now stalling a packet and that we have to 1799164Sandreas.hansson@arm.com // tell the sending master to retry once space becomes available, 1809164Sandreas.hansson@arm.com // we make no distinction whether the stalling is due to the 1819164Sandreas.hansson@arm.com // request queue or response queue being full 1829164Sandreas.hansson@arm.com return !retryReq; 1832657Ssaidi@eecs.umich.edu} 1842657Ssaidi@eecs.umich.edu 1854433Ssaidi@eecs.umich.eduvoid 1869164Sandreas.hansson@arm.comBridge::BridgeSlavePort::retryStalledReq() 1874433Ssaidi@eecs.umich.edu{ 1889164Sandreas.hansson@arm.com if (retryReq) { 1899164Sandreas.hansson@arm.com DPRINTF(Bridge, "Request waiting for retry, now retrying\n"); 1909164Sandreas.hansson@arm.com retryReq = false; 1919164Sandreas.hansson@arm.com sendRetry(); 1924433Ssaidi@eecs.umich.edu } 1934433Ssaidi@eecs.umich.edu} 1944433Ssaidi@eecs.umich.edu 1954433Ssaidi@eecs.umich.eduvoid 1969164Sandreas.hansson@arm.comBridge::BridgeMasterPort::schedTimingReq(PacketPtr pkt, Tick when) 1972657Ssaidi@eecs.umich.edu{ 1989029Sandreas.hansson@arm.com // If we expect to see a response, we need to restore the source 1999029Sandreas.hansson@arm.com // and destination field that is potentially changed by a second 2009029Sandreas.hansson@arm.com // bus 2019029Sandreas.hansson@arm.com if (!pkt->memInhibitAsserted() && pkt->needsResponse()) { 2029029Sandreas.hansson@arm.com // Update the sender state so we can deal with the response 2039029Sandreas.hansson@arm.com // appropriately 2049542Sandreas.hansson@arm.com pkt->pushSenderState(new RequestState(pkt->getSrc())); 2059029Sandreas.hansson@arm.com } 2062643Sstever@eecs.umich.edu 2072643Sstever@eecs.umich.edu // If we're about to put this packet at the head of the queue, we 2082643Sstever@eecs.umich.edu // need to schedule an event to do the transmit. Otherwise there 2092643Sstever@eecs.umich.edu // should already be an event scheduled for sending the head 2102643Sstever@eecs.umich.edu // packet. 2119164Sandreas.hansson@arm.com if (transmitList.empty()) { 2129164Sandreas.hansson@arm.com bridge.schedule(sendEvent, when); 2132568SN/A } 2148713Sandreas.hansson@arm.com 2159164Sandreas.hansson@arm.com assert(transmitList.size() != reqQueueLimit); 2168713Sandreas.hansson@arm.com 2179164Sandreas.hansson@arm.com transmitList.push_back(DeferredPacket(pkt, when)); 2188713Sandreas.hansson@arm.com} 2198713Sandreas.hansson@arm.com 2208713Sandreas.hansson@arm.com 2218713Sandreas.hansson@arm.comvoid 2229164Sandreas.hansson@arm.comBridge::BridgeSlavePort::schedTimingResp(PacketPtr pkt, Tick when) 2238713Sandreas.hansson@arm.com{ 2248713Sandreas.hansson@arm.com // This is a response for a request we forwarded earlier. The 2259029Sandreas.hansson@arm.com // corresponding request state should be stored in the packet's 2268713Sandreas.hansson@arm.com // senderState field. 2279542Sandreas.hansson@arm.com RequestState *req_state = 2289542Sandreas.hansson@arm.com dynamic_cast<RequestState*>(pkt->popSenderState()); 2299029Sandreas.hansson@arm.com assert(req_state != NULL); 2309542Sandreas.hansson@arm.com pkt->setDest(req_state->origSrc); 2319164Sandreas.hansson@arm.com delete req_state; 2328713Sandreas.hansson@arm.com 2338949Sandreas.hansson@arm.com // the bridge assumes that at least one bus has set the 2348949Sandreas.hansson@arm.com // destination field of the packet 2358949Sandreas.hansson@arm.com assert(pkt->isDestValid()); 2369164Sandreas.hansson@arm.com DPRINTF(Bridge, "response, new dest %d\n", pkt->getDest()); 2378713Sandreas.hansson@arm.com 2388713Sandreas.hansson@arm.com // If we're about to put this packet at the head of the queue, we 2398713Sandreas.hansson@arm.com // need to schedule an event to do the transmit. Otherwise there 2408713Sandreas.hansson@arm.com // should already be an event scheduled for sending the head 2418713Sandreas.hansson@arm.com // packet. 2429164Sandreas.hansson@arm.com if (transmitList.empty()) { 2439164Sandreas.hansson@arm.com bridge.schedule(sendEvent, when); 2448713Sandreas.hansson@arm.com } 2459164Sandreas.hansson@arm.com 2469164Sandreas.hansson@arm.com transmitList.push_back(DeferredPacket(pkt, when)); 2472568SN/A} 2482568SN/A 2492568SN/Avoid 2509164Sandreas.hansson@arm.comBridge::BridgeMasterPort::trySendTiming() 2512568SN/A{ 2529164Sandreas.hansson@arm.com assert(!transmitList.empty()); 2532568SN/A 2549164Sandreas.hansson@arm.com DeferredPacket req = transmitList.front(); 2552643Sstever@eecs.umich.edu 2569164Sandreas.hansson@arm.com assert(req.tick <= curTick()); 2572643Sstever@eecs.umich.edu 2589029Sandreas.hansson@arm.com PacketPtr pkt = req.pkt; 2592643Sstever@eecs.umich.edu 2609164Sandreas.hansson@arm.com DPRINTF(Bridge, "trySend request addr 0x%x, queue size %d\n", 2619164Sandreas.hansson@arm.com pkt->getAddr(), transmitList.size()); 2624432Ssaidi@eecs.umich.edu 2638975Sandreas.hansson@arm.com if (sendTimingReq(pkt)) { 2642643Sstever@eecs.umich.edu // send successful 2659164Sandreas.hansson@arm.com transmitList.pop_front(); 2669164Sandreas.hansson@arm.com DPRINTF(Bridge, "trySend request successful\n"); 2672657Ssaidi@eecs.umich.edu 2682657Ssaidi@eecs.umich.edu // If there are more packets to send, schedule event to try again. 2699164Sandreas.hansson@arm.com if (!transmitList.empty()) { 2709164Sandreas.hansson@arm.com req = transmitList.front(); 2719164Sandreas.hansson@arm.com DPRINTF(Bridge, "Scheduling next send\n"); 2729164Sandreas.hansson@arm.com bridge.schedule(sendEvent, std::max(req.tick, 2739164Sandreas.hansson@arm.com bridge.nextCycle())); 2742657Ssaidi@eecs.umich.edu } 2759164Sandreas.hansson@arm.com 2769164Sandreas.hansson@arm.com // if we have stalled a request due to a full request queue, 2779164Sandreas.hansson@arm.com // then send a retry at this point, also note that if the 2789164Sandreas.hansson@arm.com // request we stalled was waiting for the response queue 2799164Sandreas.hansson@arm.com // rather than the request queue we might stall it again 2809164Sandreas.hansson@arm.com slavePort.retryStalledReq(); 2812643Sstever@eecs.umich.edu } 2824986Ssaidi@eecs.umich.edu 2839164Sandreas.hansson@arm.com // if the send failed, then we try again once we receive a retry, 2849164Sandreas.hansson@arm.com // and therefore there is no need to take any action 2852568SN/A} 2862568SN/A 2878713Sandreas.hansson@arm.comvoid 2889164Sandreas.hansson@arm.comBridge::BridgeSlavePort::trySendTiming() 2898713Sandreas.hansson@arm.com{ 2909164Sandreas.hansson@arm.com assert(!transmitList.empty()); 2918713Sandreas.hansson@arm.com 2929164Sandreas.hansson@arm.com DeferredPacket resp = transmitList.front(); 2938713Sandreas.hansson@arm.com 2949164Sandreas.hansson@arm.com assert(resp.tick <= curTick()); 2958713Sandreas.hansson@arm.com 2969029Sandreas.hansson@arm.com PacketPtr pkt = resp.pkt; 2978713Sandreas.hansson@arm.com 2989164Sandreas.hansson@arm.com DPRINTF(Bridge, "trySend response addr 0x%x, outstanding %d\n", 2999164Sandreas.hansson@arm.com pkt->getAddr(), outstandingResponses); 3008713Sandreas.hansson@arm.com 3018975Sandreas.hansson@arm.com if (sendTimingResp(pkt)) { 3028713Sandreas.hansson@arm.com // send successful 3039164Sandreas.hansson@arm.com transmitList.pop_front(); 3049164Sandreas.hansson@arm.com DPRINTF(Bridge, "trySend response successful\n"); 3058713Sandreas.hansson@arm.com 3069164Sandreas.hansson@arm.com assert(outstandingResponses != 0); 3079164Sandreas.hansson@arm.com --outstandingResponses; 3089164Sandreas.hansson@arm.com 3099164Sandreas.hansson@arm.com // If there are more packets to send, schedule event to try again. 3109164Sandreas.hansson@arm.com if (!transmitList.empty()) { 3119164Sandreas.hansson@arm.com resp = transmitList.front(); 3129164Sandreas.hansson@arm.com DPRINTF(Bridge, "Scheduling next send\n"); 3139164Sandreas.hansson@arm.com bridge.schedule(sendEvent, std::max(resp.tick, 3149164Sandreas.hansson@arm.com bridge.nextCycle())); 3158713Sandreas.hansson@arm.com } 3168713Sandreas.hansson@arm.com 3179164Sandreas.hansson@arm.com // if there is space in the request queue and we were stalling 3189164Sandreas.hansson@arm.com // a request, it will definitely be possible to accept it now 3199164Sandreas.hansson@arm.com // since there is guaranteed space in the response queue 3209164Sandreas.hansson@arm.com if (!masterPort.reqQueueFull() && retryReq) { 3219164Sandreas.hansson@arm.com DPRINTF(Bridge, "Request waiting for retry, now retrying\n"); 3229164Sandreas.hansson@arm.com retryReq = false; 3239164Sandreas.hansson@arm.com sendRetry(); 3248713Sandreas.hansson@arm.com } 3258713Sandreas.hansson@arm.com } 3268713Sandreas.hansson@arm.com 3279164Sandreas.hansson@arm.com // if the send failed, then we try again once we receive a retry, 3289164Sandreas.hansson@arm.com // and therefore there is no need to take any action 3298713Sandreas.hansson@arm.com} 3302568SN/A 3312657Ssaidi@eecs.umich.eduvoid 3328713Sandreas.hansson@arm.comBridge::BridgeMasterPort::recvRetry() 3332568SN/A{ 3349164Sandreas.hansson@arm.com Tick nextReady = transmitList.front().tick; 3357823Ssteve.reinhardt@amd.com if (nextReady <= curTick()) 3369164Sandreas.hansson@arm.com trySendTiming(); 3374435Ssaidi@eecs.umich.edu else 3389164Sandreas.hansson@arm.com bridge.schedule(sendEvent, nextReady); 3392568SN/A} 3402568SN/A 3418713Sandreas.hansson@arm.comvoid 3428713Sandreas.hansson@arm.comBridge::BridgeSlavePort::recvRetry() 3432568SN/A{ 3449164Sandreas.hansson@arm.com Tick nextReady = transmitList.front().tick; 3458713Sandreas.hansson@arm.com if (nextReady <= curTick()) 3469164Sandreas.hansson@arm.com trySendTiming(); 3478713Sandreas.hansson@arm.com else 3489164Sandreas.hansson@arm.com bridge.schedule(sendEvent, nextReady); 3492568SN/A} 3502568SN/A 3518713Sandreas.hansson@arm.comTick 3528713Sandreas.hansson@arm.comBridge::BridgeSlavePort::recvAtomic(PacketPtr pkt) 3538713Sandreas.hansson@arm.com{ 3549180Sandreas.hansson@arm.com return delay * bridge.clockPeriod() + masterPort.sendAtomic(pkt); 3558713Sandreas.hansson@arm.com} 3568713Sandreas.hansson@arm.com 3572568SN/Avoid 3588713Sandreas.hansson@arm.comBridge::BridgeSlavePort::recvFunctional(PacketPtr pkt) 3592568SN/A{ 3609164Sandreas.hansson@arm.com std::list<DeferredPacket>::iterator i; 3612568SN/A 3625314Sstever@gmail.com pkt->pushLabel(name()); 3635314Sstever@gmail.com 3648713Sandreas.hansson@arm.com // check the response queue 3659164Sandreas.hansson@arm.com for (i = transmitList.begin(); i != transmitList.end(); ++i) { 3669029Sandreas.hansson@arm.com if (pkt->checkFunctional((*i).pkt)) { 3677668Ssteve.reinhardt@amd.com pkt->makeResponse(); 3684626Sstever@eecs.umich.edu return; 3697668Ssteve.reinhardt@amd.com } 3702568SN/A } 3712568SN/A 3728713Sandreas.hansson@arm.com // also check the master port's request queue 3738851Sandreas.hansson@arm.com if (masterPort.checkFunctional(pkt)) { 3748713Sandreas.hansson@arm.com return; 3758713Sandreas.hansson@arm.com } 3768713Sandreas.hansson@arm.com 3775314Sstever@gmail.com pkt->popLabel(); 3785314Sstever@gmail.com 3794626Sstever@eecs.umich.edu // fall through if pkt still not satisfied 3808851Sandreas.hansson@arm.com masterPort.sendFunctional(pkt); 3818713Sandreas.hansson@arm.com} 3828713Sandreas.hansson@arm.com 3838713Sandreas.hansson@arm.combool 3848713Sandreas.hansson@arm.comBridge::BridgeMasterPort::checkFunctional(PacketPtr pkt) 3858713Sandreas.hansson@arm.com{ 3868713Sandreas.hansson@arm.com bool found = false; 3879164Sandreas.hansson@arm.com std::list<DeferredPacket>::iterator i = transmitList.begin(); 3888713Sandreas.hansson@arm.com 3899164Sandreas.hansson@arm.com while(i != transmitList.end() && !found) { 3909029Sandreas.hansson@arm.com if (pkt->checkFunctional((*i).pkt)) { 3918713Sandreas.hansson@arm.com pkt->makeResponse(); 3928713Sandreas.hansson@arm.com found = true; 3938713Sandreas.hansson@arm.com } 3948713Sandreas.hansson@arm.com ++i; 3958713Sandreas.hansson@arm.com } 3968713Sandreas.hansson@arm.com 3978713Sandreas.hansson@arm.com return found; 3982568SN/A} 3992568SN/A 4008711Sandreas.hansson@arm.comAddrRangeList 4019090Sandreas.hansson@arm.comBridge::BridgeSlavePort::getAddrRanges() const 4022568SN/A{ 4038711Sandreas.hansson@arm.com return ranges; 4042568SN/A} 4052568SN/A 4064762Snate@binkert.orgBridge * 4074762Snate@binkert.orgBridgeParams::create() 4082568SN/A{ 4094762Snate@binkert.org return new Bridge(this); 4102568SN/A} 411