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authorSteve Reinhardt <stever@gmail.com>2008-02-10 14:15:42 -0800
committerSteve Reinhardt <stever@gmail.com>2008-02-10 14:15:42 -0800
commitd56e77c180aeca0ff1ba271378424787345ec0b8 (patch)
tree2533f37fd2657cca05c3459aba34e128548c8172 /src/mem/cache/prefetch/base.hh
parent6cc1573923754ecb406d03ab4d807f928737c294 (diff)
downloadgem5-d56e77c180aeca0ff1ba271378424787345ec0b8.tar.xz
Rename cache files for brevity and consistency with rest of tree.
--HG-- rename : src/mem/cache/base_cache.cc => src/mem/cache/base.cc rename : src/mem/cache/base_cache.hh => src/mem/cache/base.hh rename : src/mem/cache/cache_blk.cc => src/mem/cache/blk.cc rename : src/mem/cache/cache_blk.hh => src/mem/cache/blk.hh rename : src/mem/cache/cache_builder.cc => src/mem/cache/builder.cc rename : src/mem/cache/miss/mshr.cc => src/mem/cache/mshr.cc rename : src/mem/cache/miss/mshr.hh => src/mem/cache/mshr.hh rename : src/mem/cache/miss/mshr_queue.cc => src/mem/cache/mshr_queue.cc rename : src/mem/cache/miss/mshr_queue.hh => src/mem/cache/mshr_queue.hh rename : src/mem/cache/prefetch/base_prefetcher.cc => src/mem/cache/prefetch/base.cc rename : src/mem/cache/prefetch/base_prefetcher.hh => src/mem/cache/prefetch/base.hh rename : src/mem/cache/prefetch/ghb_prefetcher.cc => src/mem/cache/prefetch/ghb.cc rename : src/mem/cache/prefetch/ghb_prefetcher.hh => src/mem/cache/prefetch/ghb.hh rename : src/mem/cache/prefetch/stride_prefetcher.cc => src/mem/cache/prefetch/stride.cc rename : src/mem/cache/prefetch/stride_prefetcher.hh => src/mem/cache/prefetch/stride.hh rename : src/mem/cache/prefetch/tagged_prefetcher.cc => src/mem/cache/prefetch/tagged.cc rename : src/mem/cache/prefetch/tagged_prefetcher.hh => src/mem/cache/prefetch/tagged.hh rename : src/mem/cache/tags/base_tags.cc => src/mem/cache/tags/base.cc rename : src/mem/cache/tags/base_tags.hh => src/mem/cache/tags/base.hh rename : src/mem/cache/tags/Repl.py => src/mem/cache/tags/iic_repl/Repl.py rename : src/mem/cache/tags/repl/gen.cc => src/mem/cache/tags/iic_repl/gen.cc rename : src/mem/cache/tags/repl/gen.hh => src/mem/cache/tags/iic_repl/gen.hh rename : src/mem/cache/tags/repl/repl.hh => src/mem/cache/tags/iic_repl/repl.hh extra : convert_revision : ff7a35cc155a8d80317563c45cebe405984eac62
Diffstat (limited to 'src/mem/cache/prefetch/base.hh')
-rw-r--r--src/mem/cache/prefetch/base.hh120
1 files changed, 120 insertions, 0 deletions
diff --git a/src/mem/cache/prefetch/base.hh b/src/mem/cache/prefetch/base.hh
new file mode 100644
index 000000000..1515d8a93
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+++ b/src/mem/cache/prefetch/base.hh
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2005 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Ron Dreslinski
+ */
+
+/**
+ * @file
+ * Miss and writeback queue declarations.
+ */
+
+#ifndef __MEM_CACHE_PREFETCH_BASE_PREFETCHER_HH__
+#define __MEM_CACHE_PREFETCH_BASE_PREFETCHER_HH__
+
+#include <list>
+
+#include "base/statistics.hh"
+#include "mem/packet.hh"
+#include "params/BaseCache.hh"
+
+class BaseCache;
+
+class BasePrefetcher
+{
+ protected:
+
+ /** The Prefetch Queue. */
+ std::list<PacketPtr> pf;
+
+ // PARAMETERS
+
+ /** The number of MSHRs in the Prefetch Queue. */
+ const int size;
+
+ /** Pointr to the parent cache. */
+ BaseCache* cache;
+
+ /** The block size of the parent cache. */
+ int blkSize;
+
+ /** Do we prefetch across page boundaries. */
+ bool pageStop;
+
+ /** Do we remove prefetches with later times than a new miss.*/
+ bool serialSquash;
+
+ /** Do we check if it is in the cache when inserting into buffer,
+ or removing.*/
+ bool cacheCheckPush;
+
+ /** Do we prefetch on only data reads, or on inst reads as well. */
+ bool only_data;
+
+ public:
+
+ Stats::Scalar<> pfIdentified;
+ Stats::Scalar<> pfMSHRHit;
+ Stats::Scalar<> pfCacheHit;
+ Stats::Scalar<> pfBufferHit;
+ Stats::Scalar<> pfRemovedFull;
+ Stats::Scalar<> pfRemovedMSHR;
+ Stats::Scalar<> pfIssued;
+ Stats::Scalar<> pfSpanPage;
+ Stats::Scalar<> pfSquashed;
+
+ void regStats(const std::string &name);
+
+ public:
+ BasePrefetcher(const BaseCacheParams *p);
+
+ virtual ~BasePrefetcher() {}
+
+ void setCache(BaseCache *_cache);
+
+ void handleMiss(PacketPtr &pkt, Tick time);
+
+ bool inCache(Addr addr);
+
+ bool inMissQueue(Addr addr);
+
+ PacketPtr getPacket();
+
+ bool havePending()
+ {
+ return !pf.empty();
+ }
+
+ virtual void calculatePrefetch(PacketPtr &pkt,
+ std::list<Addr> &addresses,
+ std::list<Tick> &delays) = 0;
+
+ std::list<PacketPtr>::iterator inPrefetch(Addr address);
+};
+
+
+#endif //__MEM_CACHE_PREFETCH_BASE_PREFETCHER_HH__