Merge zizzer:/bk/newmem
into zazzer.eecs.umich.edu:/.automount/zooks/y/ksewell/research/m5-sim/newmem-mips --HG-- extra : convert_revision : db8490e41ec17fc8f4e2dc9548ecdc7d28b4cdd1
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Korey Sewell
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73
mem/cache/prefetch/tagged_prefetcher_impl.hh
vendored
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73
mem/cache/prefetch/tagged_prefetcher_impl.hh
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/*
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* Copyright (c) 2005 The Regents of The University of Michigan
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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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/**
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* @file
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* Describes a tagged prefetcher based on template policies.
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*/
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#include "mem/cache/prefetch/tagged_prefetcher.hh"
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template <class TagStore, class Buffering>
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TaggedPrefetcher<TagStore, Buffering>::
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TaggedPrefetcher(int size, bool pageStop, bool serialSquash,
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bool cacheCheckPush, bool onlyData,
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Tick latency, int degree)
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:Prefetcher<TagStore, Buffering>(size, pageStop, serialSquash,
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cacheCheckPush, onlyData),
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latency(latency), degree(degree)
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{
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}
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template <class TagStore, class Buffering>
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void
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TaggedPrefetcher<TagStore, Buffering>::
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calculatePrefetch(MemReqPtr &req, std::list<Addr> &addresses,
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std::list<Tick> &delays)
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{
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Addr blkAddr = req->paddr & ~(Addr)(this->blkSize-1);
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for (int d=1; d <= degree; d++) {
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Addr newAddr = blkAddr + d*(this->blkSize);
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if (this->pageStop &&
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(blkAddr & ~(TheISA::VMPageSize - 1)) !=
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(newAddr & ~(TheISA::VMPageSize - 1)))
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{
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//Spanned the page, so now stop
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this->pfSpanPage += degree - d + 1;
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return;
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}
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else
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{
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addresses.push_back(newAddr);
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delays.push_back(latency);
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}
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}
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}
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39
mem/config/prefetch.hh
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39
mem/config/prefetch.hh
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/*
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* Copyright (c) 2004-2005 The Regents of The University of Michigan
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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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/**
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* @file
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* Central location to configure which prefetch types we want to build
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* into the simulator. In the future, this should probably be
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* autogenerated by some sort of configuration script.
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*/
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#define USE_TAGGED 1 //Be sure not to turn this off, it is also used for no
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//prefetching case unless you always want to use a
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//different prefetcher
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//#define USE_STRIDED 1
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//#define USE_GHB 1
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