2006-06-28 17:02:14 +02:00
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/*
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2015-03-27 09:55:55 +01:00
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* Copyright (c) 2012-2013, 2015 ARM Limited
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2013-04-22 19:20:33 +02:00
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* All rights reserved.
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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2006-06-28 17:02:14 +02:00
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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2010-08-25 23:08:27 +02:00
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* Copyright (c) 2010 Advanced Micro Devices, Inc.
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2006-06-28 17:02:14 +02:00
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Erik Hallnor
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* Dave Greene
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*/
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/**
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* @file
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* Miss Status and Handling Register (MSHR) definitions.
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*/
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2009-05-17 23:34:52 +02:00
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#include <algorithm>
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#include <cassert>
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2006-06-28 17:02:14 +02:00
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#include <string>
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#include <vector>
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#include "base/misc.hh"
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2009-05-17 23:34:52 +02:00
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#include "base/types.hh"
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2011-04-15 19:44:32 +02:00
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#include "debug/Cache.hh"
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2006-06-28 17:02:14 +02:00
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#include "mem/cache/cache.hh"
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2009-05-17 23:34:52 +02:00
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#include "mem/cache/mshr.hh"
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#include "sim/core.hh"
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2006-06-28 17:02:14 +02:00
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using namespace std;
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2013-05-30 18:54:11 +02:00
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MSHR::MSHR() : readyTime(0), _isUncacheable(false), downstreamPending(false),
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2014-12-02 12:08:17 +01:00
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pendingDirty(false),
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2014-10-22 00:04:41 +02:00
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postInvalidate(false), postDowngrade(false),
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2015-03-27 09:55:55 +01:00
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queue(NULL), order(0), blkAddr(0),
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blkSize(0), isSecure(false), inService(false),
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2014-10-22 00:04:41 +02:00
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isForward(false), threadNum(InvalidThreadID), data(NULL)
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2006-06-28 17:02:14 +02:00
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{
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}
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2007-07-22 03:18:42 +02:00
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MSHR::TargetList::TargetList()
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: needsExclusive(false), hasUpgrade(false)
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{}
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inline void
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2007-07-23 06:43:38 +02:00
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MSHR::TargetList::add(PacketPtr pkt, Tick readyTime,
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2009-02-16 17:56:40 +01:00
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Counter order, Target::Source source, bool markPending)
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2007-07-22 03:18:42 +02:00
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{
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2009-02-16 17:56:40 +01:00
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if (source != Target::FromSnoop) {
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2007-07-22 03:18:42 +02:00
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if (pkt->needsExclusive()) {
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needsExclusive = true;
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}
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2010-09-09 20:40:19 +02:00
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// StoreCondReq is effectively an upgrade if it's in an MSHR
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// since it would have been failed already if we didn't have a
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// read-only copy
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if (pkt->isUpgrade() || pkt->cmd == MemCmd::StoreCondReq) {
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2007-07-22 03:18:42 +02:00
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hasUpgrade = true;
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}
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2008-01-03 00:18:33 +01:00
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}
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2007-07-23 06:43:38 +02:00
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2008-01-03 00:18:33 +01:00
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if (markPending) {
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2013-02-19 11:56:06 +01:00
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// Iterate over the SenderState stack and see if we find
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// an MSHR entry. If we do, set the downstreamPending
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// flag. Otherwise, do nothing.
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MSHR *mshr = pkt->findNextSenderState<MSHR>();
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2007-07-23 06:43:38 +02:00
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if (mshr != NULL) {
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assert(!mshr->downstreamPending);
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mshr->downstreamPending = true;
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}
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2007-07-22 03:18:42 +02:00
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}
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2015-03-27 09:55:57 +01:00
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emplace_back(Target(pkt, readyTime, order, source, markPending));
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2007-07-22 03:18:42 +02:00
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}
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2010-09-09 20:40:18 +02:00
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static void
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replaceUpgrade(PacketPtr pkt)
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{
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if (pkt->cmd == MemCmd::UpgradeReq) {
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pkt->cmd = MemCmd::ReadExReq;
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DPRINTF(Cache, "Replacing UpgradeReq with ReadExReq\n");
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} else if (pkt->cmd == MemCmd::SCUpgradeReq) {
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pkt->cmd = MemCmd::SCUpgradeFailReq;
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DPRINTF(Cache, "Replacing SCUpgradeReq with SCUpgradeFailReq\n");
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2010-09-09 20:40:19 +02:00
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} else if (pkt->cmd == MemCmd::StoreCondReq) {
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pkt->cmd = MemCmd::StoreCondFailReq;
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DPRINTF(Cache, "Replacing StoreCondReq with StoreCondFailReq\n");
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2010-09-09 20:40:18 +02:00
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}
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}
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2007-07-22 03:18:42 +02:00
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void
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MSHR::TargetList::replaceUpgrades()
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{
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if (!hasUpgrade)
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return;
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2015-03-27 09:55:57 +01:00
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for (auto& t : *this) {
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replaceUpgrade(t.pkt);
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2007-07-22 03:18:42 +02:00
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}
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hasUpgrade = false;
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}
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2007-07-23 06:43:38 +02:00
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void
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MSHR::TargetList::clearDownstreamPending()
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{
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2015-03-27 09:55:57 +01:00
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for (auto& t : *this) {
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if (t.markedPending) {
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2013-02-19 11:56:06 +01:00
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// Iterate over the SenderState stack and see if we find
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// an MSHR entry. If we find one, clear the
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// downstreamPending flag by calling
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// clearDownstreamPending(). This recursively clears the
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// downstreamPending flag in all caches this packet has
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// passed through.
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2015-03-27 09:55:57 +01:00
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MSHR *mshr = t.pkt->findNextSenderState<MSHR>();
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2008-01-03 00:18:33 +01:00
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if (mshr != NULL) {
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mshr->clearDownstreamPending();
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}
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2007-07-23 06:43:38 +02:00
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}
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}
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}
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2007-07-27 21:46:45 +02:00
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bool
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MSHR::TargetList::checkFunctional(PacketPtr pkt)
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{
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2015-03-27 09:55:57 +01:00
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for (auto& t : *this) {
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if (pkt->checkFunctional(t.pkt)) {
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2007-07-27 21:46:45 +02:00
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return true;
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}
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}
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return false;
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}
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2008-01-02 21:20:15 +01:00
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void
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2015-03-27 09:55:57 +01:00
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MSHR::TargetList::print(std::ostream &os, int verbosity,
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const std::string &prefix) const
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2008-01-02 21:20:15 +01:00
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{
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2015-03-27 09:55:57 +01:00
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for (auto& t : *this) {
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2009-02-16 17:56:40 +01:00
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const char *s;
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2015-03-27 09:55:57 +01:00
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switch (t.source) {
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2012-05-11 01:04:26 +02:00
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case Target::FromCPU:
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s = "FromCPU";
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break;
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case Target::FromSnoop:
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s = "FromSnoop";
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break;
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case Target::FromPrefetcher:
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s = "FromPrefetcher";
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break;
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default:
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s = "";
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break;
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2009-02-16 17:56:40 +01:00
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}
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ccprintf(os, "%s%s: ", prefix, s);
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2015-03-27 09:55:57 +01:00
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t.pkt->print(os, verbosity, "");
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2008-01-02 21:20:15 +01:00
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}
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}
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2006-06-28 17:02:14 +02:00
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void
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2015-03-27 09:55:55 +01:00
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MSHR::allocate(Addr blk_addr, unsigned blk_size, PacketPtr target,
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Tick when_ready, Counter _order)
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2006-06-28 17:02:14 +02:00
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{
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2015-03-27 09:55:55 +01:00
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blkAddr = blk_addr;
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blkSize = blk_size;
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2014-01-24 22:29:30 +01:00
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isSecure = target->isSecure();
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2015-03-27 09:55:55 +01:00
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readyTime = when_ready;
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2007-06-25 15:47:05 +02:00
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order = _order;
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2007-06-18 02:27:53 +02:00
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assert(target);
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2008-11-10 23:10:28 +01:00
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isForward = false;
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2007-06-18 02:27:53 +02:00
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_isUncacheable = target->req->isUncacheable();
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inService = false;
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2007-07-23 06:43:38 +02:00
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downstreamPending = false;
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2007-06-18 02:27:53 +02:00
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threadNum = 0;
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2013-05-30 18:54:11 +02:00
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assert(targets.isReset());
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2009-02-16 17:56:40 +01:00
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// Don't know of a case where we would allocate a new MSHR for a
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// snoop (mem-side request), so set source according to request here
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Target::Source source = (target->cmd == MemCmd::HardPFReq) ?
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Target::FromPrefetcher : Target::FromCPU;
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2015-03-27 09:55:55 +01:00
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targets.add(target, when_ready, _order, source, true);
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2013-05-30 18:54:11 +02:00
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assert(deferredTargets.isReset());
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2007-06-26 23:53:15 +02:00
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data = NULL;
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2006-06-28 17:02:14 +02:00
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}
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2007-07-23 06:43:38 +02:00
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2008-01-03 00:18:33 +01:00
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void
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MSHR::clearDownstreamPending()
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{
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assert(downstreamPending);
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downstreamPending = false;
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// recursively clear flag on any MSHRs we will be forwarding
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// responses to
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2013-05-30 18:54:11 +02:00
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targets.clearDownstreamPending();
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2008-01-03 00:18:33 +01:00
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}
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2007-07-23 06:43:38 +02:00
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bool
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2015-02-03 20:25:59 +01:00
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MSHR::markInService(bool pending_dirty_resp)
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2007-07-23 06:43:38 +02:00
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{
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assert(!inService);
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2008-11-10 23:10:28 +01:00
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if (isForwardNoResponse()) {
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2007-07-23 06:43:38 +02:00
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// we just forwarded the request packet & don't expect a
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// response, so get rid of it
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assert(getNumTargets() == 1);
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popTarget();
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return true;
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}
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2014-10-09 23:51:56 +02:00
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2007-07-23 06:43:38 +02:00
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inService = true;
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2015-02-03 20:25:59 +01:00
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pendingDirty = targets.needsExclusive || pending_dirty_resp;
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2010-09-09 20:40:18 +02:00
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postInvalidate = postDowngrade = false;
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2007-07-23 06:43:38 +02:00
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if (!downstreamPending) {
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// let upstream caches know that the request has made it to a
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// level where it's going to get a response
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2013-05-30 18:54:11 +02:00
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targets.clearDownstreamPending();
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2007-07-23 06:43:38 +02:00
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}
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return false;
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}
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2006-06-28 17:02:14 +02:00
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void
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MSHR::deallocate()
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{
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2013-05-30 18:54:11 +02:00
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assert(targets.empty());
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targets.resetFlags();
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assert(deferredTargets.isReset());
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2006-06-28 17:02:14 +02:00
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inService = false;
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}
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/*
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* Adds a target to an MSHR
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*/
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void
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2007-07-22 03:18:42 +02:00
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MSHR::allocateTarget(PacketPtr pkt, Tick whenReady, Counter _order)
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2006-06-28 17:02:14 +02:00
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{
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2015-03-27 09:56:00 +01:00
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// assume we'd never issue a prefetch when we've got an
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// outstanding miss
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assert(pkt->cmd != MemCmd::HardPFReq);
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// uncacheable accesses always allocate a new MSHR, and cacheable
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// accesses ignore any uncacheable MSHRs, thus we should never
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// have targets addded if originally allocated uncacheable
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assert(!_isUncacheable);
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2007-07-22 03:18:42 +02:00
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// if there's a request already in service for this MSHR, we will
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// have to defer the new target until after the response if any of
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// the following are true:
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// - there are other targets already deferred
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// - there's a pending invalidate to be applied after the response
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// comes back (but before this target is processed)
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2010-09-09 20:40:18 +02:00
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// - this target requires an exclusive block and either we're not
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// getting an exclusive block back or we have already snooped
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// another read request that will downgrade our exclusive block
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// to shared
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2007-07-22 03:18:42 +02:00
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if (inService &&
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2013-05-30 18:54:11 +02:00
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(!deferredTargets.empty() || hasPostInvalidate() ||
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2010-09-09 20:40:18 +02:00
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(pkt->needsExclusive() &&
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(!isPendingDirty() || hasPostDowngrade() || isForward)))) {
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2007-07-22 03:18:42 +02:00
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// need to put on deferred list
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2010-09-09 20:40:18 +02:00
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if (hasPostInvalidate())
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replaceUpgrade(pkt);
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2013-05-30 18:54:11 +02:00
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deferredTargets.add(pkt, whenReady, _order, Target::FromCPU, true);
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2007-06-25 02:32:31 +02:00
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} else {
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2008-01-03 00:18:33 +01:00
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// No request outstanding, or still OK to append to
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// outstanding request: append to regular target list. Only
|
|
|
|
// mark pending if current request hasn't been issued yet
|
|
|
|
// (isn't in service).
|
2013-05-30 18:54:11 +02:00
|
|
|
targets.add(pkt, whenReady, _order, Target::FromCPU, !inService);
|
2007-06-25 02:32:31 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-07-21 22:45:17 +02:00
|
|
|
bool
|
|
|
|
MSHR::handleSnoop(PacketPtr pkt, Counter _order)
|
2007-06-25 02:32:31 +02:00
|
|
|
{
|
2015-03-02 10:00:56 +01:00
|
|
|
DPRINTF(Cache, "%s for %s addr %#llx size %d\n", __func__,
|
2013-04-22 19:20:33 +02:00
|
|
|
pkt->cmdString(), pkt->getAddr(), pkt->getSize());
|
2007-07-24 07:28:40 +02:00
|
|
|
if (!inService || (pkt->isExpressSnoop() && downstreamPending)) {
|
2007-07-22 03:18:42 +02:00
|
|
|
// Request has not been issued yet, or it's been issued
|
|
|
|
// locally but is buffered unissued at some downstream cache
|
|
|
|
// which is forwarding us this snoop. Either way, the packet
|
|
|
|
// we're snooping logically precedes this MSHR's request, so
|
|
|
|
// the snoop has no impact on the MSHR, but must be processed
|
|
|
|
// in the standard way by the cache. The only exception is
|
|
|
|
// that if we're an L2+ cache buffering an UpgradeReq from a
|
|
|
|
// higher-level cache, and the snoop is invalidating, then our
|
|
|
|
// buffered upgrades must be converted to read exclusives,
|
|
|
|
// since the upper-level cache no longer has a valid copy.
|
|
|
|
// That is, even though the upper-level cache got out on its
|
|
|
|
// local bus first, some other invalidating transaction
|
|
|
|
// reached the global bus before the upgrade did.
|
|
|
|
if (pkt->needsExclusive()) {
|
2013-05-30 18:54:11 +02:00
|
|
|
targets.replaceUpgrades();
|
|
|
|
deferredTargets.replaceUpgrades();
|
2007-07-22 03:18:42 +02:00
|
|
|
}
|
|
|
|
|
2007-07-21 22:45:17 +02:00
|
|
|
return false;
|
|
|
|
}
|
2007-06-25 02:32:31 +02:00
|
|
|
|
2007-07-22 03:18:42 +02:00
|
|
|
// From here on down, the request issued by this MSHR logically
|
|
|
|
// precedes the request we're snooping.
|
|
|
|
if (pkt->needsExclusive()) {
|
|
|
|
// snooped request still precedes the re-request we'll have to
|
|
|
|
// issue for deferred targets, if any...
|
2013-05-30 18:54:11 +02:00
|
|
|
deferredTargets.replaceUpgrades();
|
2007-07-22 03:18:42 +02:00
|
|
|
}
|
|
|
|
|
2010-09-09 20:40:18 +02:00
|
|
|
if (hasPostInvalidate()) {
|
2007-06-25 02:32:31 +02:00
|
|
|
// a prior snoop has already appended an invalidation, so
|
2007-07-22 03:18:42 +02:00
|
|
|
// logically we don't have the block anymore; no need for
|
|
|
|
// further snooping.
|
2007-07-21 22:45:17 +02:00
|
|
|
return true;
|
2006-06-28 17:02:14 +02:00
|
|
|
}
|
2007-06-25 02:32:31 +02:00
|
|
|
|
2010-09-09 20:40:18 +02:00
|
|
|
if (isPendingDirty() || pkt->isInvalidate()) {
|
|
|
|
// We need to save and replay the packet in two cases:
|
|
|
|
// 1. We're awaiting an exclusive copy, so ownership is pending,
|
|
|
|
// and we need to respond after we receive data.
|
|
|
|
// 2. It's an invalidation (e.g., UpgradeReq), and we need
|
|
|
|
// to forward the snoop up the hierarchy after the current
|
|
|
|
// transaction completes.
|
|
|
|
|
2012-04-06 19:46:31 +02:00
|
|
|
// Actual target device (typ. a memory) will delete the
|
2010-09-09 20:40:18 +02:00
|
|
|
// packet on reception, so we need to save a copy here.
|
2014-12-02 12:07:54 +01:00
|
|
|
|
|
|
|
// Clear flags and also allocate new data as the original
|
|
|
|
// packet data storage may have been deleted by the time we
|
|
|
|
// get to send this packet.
|
2015-03-17 12:50:55 +01:00
|
|
|
PacketPtr cp_pkt = nullptr;
|
2007-06-27 07:23:10 +02:00
|
|
|
|
2014-12-02 12:08:17 +01:00
|
|
|
if (isPendingDirty()) {
|
2015-03-17 12:50:55 +01:00
|
|
|
// Case 1: The new packet will need to get the response from the
|
|
|
|
// MSHR already queued up here
|
|
|
|
cp_pkt = new Packet(pkt, true, true);
|
2007-06-27 07:23:10 +02:00
|
|
|
pkt->assertMemInhibit();
|
2015-05-05 09:22:29 +02:00
|
|
|
// in the case of an uncacheable request there is no need
|
|
|
|
// to set the exclusive flag, but since the recipient does
|
|
|
|
// not care there is no harm in doing so
|
2007-07-27 02:04:17 +02:00
|
|
|
pkt->setSupplyExclusive();
|
2015-03-17 12:50:55 +01:00
|
|
|
} else {
|
|
|
|
// Case 2: We only need to buffer the packet for information
|
|
|
|
// purposes; the original request can proceed without waiting
|
|
|
|
// => Create a copy of the request, as that may get deallocated as
|
|
|
|
// well
|
|
|
|
cp_pkt = new Packet(new Request(*pkt->req), pkt->cmd);
|
|
|
|
DPRINTF(Cache, "Copying packet %p -> %p and request %p -> %p\n",
|
|
|
|
pkt, cp_pkt, pkt->req, cp_pkt->req);
|
2007-06-27 07:23:10 +02:00
|
|
|
}
|
2015-03-17 12:50:55 +01:00
|
|
|
targets.add(cp_pkt, curTick(), _order, Target::FromSnoop,
|
|
|
|
downstreamPending && targets.needsExclusive);
|
2007-06-26 07:23:29 +02:00
|
|
|
|
2007-06-27 07:23:10 +02:00
|
|
|
if (pkt->needsExclusive()) {
|
|
|
|
// This transaction will take away our pending copy
|
2010-09-09 20:40:18 +02:00
|
|
|
postInvalidate = true;
|
2007-06-27 07:23:10 +02:00
|
|
|
}
|
2010-09-09 20:40:18 +02:00
|
|
|
}
|
|
|
|
|
2015-05-05 09:22:29 +02:00
|
|
|
if (!pkt->needsExclusive() && !pkt->req->isUncacheable()) {
|
2010-09-09 20:40:18 +02:00
|
|
|
// This transaction will get a read-shared copy, downgrading
|
|
|
|
// our copy if we had an exclusive one
|
|
|
|
postDowngrade = true;
|
2007-06-27 07:23:10 +02:00
|
|
|
pkt->assertShared();
|
2006-06-28 17:02:14 +02:00
|
|
|
}
|
2007-07-21 22:45:17 +02:00
|
|
|
|
|
|
|
return true;
|
2007-06-25 02:32:31 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool
|
|
|
|
MSHR::promoteDeferredTargets()
|
|
|
|
{
|
2013-05-30 18:54:11 +02:00
|
|
|
assert(targets.empty());
|
|
|
|
if (deferredTargets.empty()) {
|
2007-06-25 02:32:31 +02:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2007-07-22 03:18:42 +02:00
|
|
|
// swap targets & deferredTargets lists
|
2013-05-30 18:54:11 +02:00
|
|
|
std::swap(targets, deferredTargets);
|
2007-07-22 03:18:42 +02:00
|
|
|
|
|
|
|
// clear deferredTargets flags
|
2013-05-30 18:54:11 +02:00
|
|
|
deferredTargets.resetFlags();
|
2006-06-28 17:02:14 +02:00
|
|
|
|
2013-05-30 18:54:11 +02:00
|
|
|
order = targets.front().order;
|
|
|
|
readyTime = std::max(curTick(), targets.front().readyTime);
|
2007-06-25 02:32:31 +02:00
|
|
|
|
|
|
|
return true;
|
2006-06-28 17:02:14 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2007-06-26 23:53:15 +02:00
|
|
|
void
|
2015-03-27 09:55:57 +01:00
|
|
|
MSHR::handleFill(PacketPtr pkt, CacheBlk *blk)
|
2007-06-26 23:53:15 +02:00
|
|
|
{
|
2010-09-09 20:40:18 +02:00
|
|
|
if (!pkt->sharedAsserted()
|
|
|
|
&& !(hasPostInvalidate() || hasPostDowngrade())
|
2013-05-30 18:54:11 +02:00
|
|
|
&& deferredTargets.needsExclusive) {
|
2007-11-17 05:10:32 +01:00
|
|
|
// We got an exclusive response, but we have deferred targets
|
|
|
|
// which are waiting to request an exclusive copy (not because
|
|
|
|
// of a pending invalidate). This can happen if the original
|
|
|
|
// request was for a read-only (non-exclusive) block, but we
|
|
|
|
// got an exclusive copy anyway because of the E part of the
|
|
|
|
// MOESI/MESI protocol. Since we got the exclusive copy
|
|
|
|
// there's no need to defer the targets, so move them up to
|
|
|
|
// the regular target list.
|
2013-05-30 18:54:11 +02:00
|
|
|
assert(!targets.needsExclusive);
|
|
|
|
targets.needsExclusive = true;
|
2008-01-03 00:18:33 +01:00
|
|
|
// if any of the deferred targets were upper-level cache
|
|
|
|
// requests marked downstreamPending, need to clear that
|
|
|
|
assert(!downstreamPending); // not pending here anymore
|
2013-05-30 18:54:11 +02:00
|
|
|
deferredTargets.clearDownstreamPending();
|
2007-11-17 05:10:32 +01:00
|
|
|
// this clears out deferredTargets too
|
2013-05-30 18:54:11 +02:00
|
|
|
targets.splice(targets.end(), deferredTargets);
|
|
|
|
deferredTargets.resetFlags();
|
2007-11-17 05:10:32 +01:00
|
|
|
}
|
2007-06-26 23:53:15 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-01-02 21:20:15 +01:00
|
|
|
bool
|
|
|
|
MSHR::checkFunctional(PacketPtr pkt)
|
|
|
|
{
|
|
|
|
// For printing, we treat the MSHR as a whole as single entity.
|
|
|
|
// For other requests, we iterate over the individual targets
|
|
|
|
// since that's where the actual data lies.
|
|
|
|
if (pkt->isPrint()) {
|
2015-03-27 09:55:55 +01:00
|
|
|
pkt->checkFunctional(this, blkAddr, isSecure, blkSize, NULL);
|
2008-01-02 21:20:15 +01:00
|
|
|
return false;
|
|
|
|
} else {
|
2013-05-30 18:54:11 +02:00
|
|
|
return (targets.checkFunctional(pkt) ||
|
|
|
|
deferredTargets.checkFunctional(pkt));
|
2008-01-02 21:20:15 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-06-28 17:02:14 +02:00
|
|
|
void
|
2008-01-02 21:20:15 +01:00
|
|
|
MSHR::print(std::ostream &os, int verbosity, const std::string &prefix) const
|
2006-06-28 17:02:14 +02:00
|
|
|
{
|
2015-03-02 10:00:56 +01:00
|
|
|
ccprintf(os, "%s[%#llx:%#llx](%s) %s %s %s state: %s %s %s %s %s\n",
|
2015-03-27 09:55:55 +01:00
|
|
|
prefix, blkAddr, blkAddr + blkSize - 1,
|
2014-01-24 22:29:30 +01:00
|
|
|
isSecure ? "s" : "ns",
|
2008-11-10 23:10:28 +01:00
|
|
|
isForward ? "Forward" : "",
|
|
|
|
isForwardNoResponse() ? "ForwNoResp" : "",
|
2008-01-02 21:20:15 +01:00
|
|
|
needsExclusive() ? "Excl" : "",
|
|
|
|
_isUncacheable ? "Unc" : "",
|
|
|
|
inService ? "InSvc" : "",
|
|
|
|
downstreamPending ? "DwnPend" : "",
|
2010-09-09 20:40:18 +02:00
|
|
|
hasPostInvalidate() ? "PostInv" : "",
|
|
|
|
hasPostDowngrade() ? "PostDowngr" : "");
|
2008-01-02 21:20:15 +01:00
|
|
|
|
|
|
|
ccprintf(os, "%s Targets:\n", prefix);
|
2013-05-30 18:54:11 +02:00
|
|
|
targets.print(os, verbosity, prefix + " ");
|
|
|
|
if (!deferredTargets.empty()) {
|
2008-01-02 21:20:15 +01:00
|
|
|
ccprintf(os, "%s Deferred Targets:\n", prefix);
|
2013-05-30 18:54:11 +02:00
|
|
|
deferredTargets.print(os, verbosity, prefix + " ");
|
2006-06-28 17:02:14 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-04-22 19:20:33 +02:00
|
|
|
std::string
|
|
|
|
MSHR::print() const
|
|
|
|
{
|
|
|
|
ostringstream str;
|
|
|
|
print(str);
|
|
|
|
return str.str();
|
|
|
|
}
|