Get rid of coherence protocol object.

--HG--
extra : convert_revision : 4ff144342dca23af9a12a2169ca318a002654b42

5 files changed, 0 insertions, 933 deletions

diff --git a/src/mem/cache/coherence/CoherenceProtocol.py b/src/mem/cache/coherence/CoherenceProtocol.py
deleted file mode 100644
index 82adb6862..000000000
--- a/src/mem/cache/coherence/CoherenceProtocol.py
+++ /dev/null
@@ -1,8 +0,0 @@
-from m5.SimObject import SimObject
-from m5.params import *
-class Coherence(Enum): vals = ['uni', 'msi', 'mesi', 'mosi', 'moesi']
-
-class CoherenceProtocol(SimObject):
-    type = 'CoherenceProtocol'
-    do_upgrades = Param.Bool(True, "use upgrade transactions?")
-    protocol = Param.Coherence("name of coherence protocol")
diff --git a/src/mem/cache/coherence/SConscript b/src/mem/cache/coherence/SConscript
deleted file mode 100644
index 91720b20e..000000000
--- a/src/mem/cache/coherence/SConscript
+++ /dev/null
@@ -1,36 +0,0 @@
-# -*- mode:python -*-
-
-# Copyright (c) 2006 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: Nathan Binkert
-
-Import('*')
-
-SimObject('CoherenceProtocol.py')
-
-Source('coherence_protocol.cc')
-
diff --git a/src/mem/cache/coherence/coherence_protocol.cc b/src/mem/cache/coherence/coherence_protocol.cc
deleted file mode 100644
index 47d2b469f..000000000
--- a/src/mem/cache/coherence/coherence_protocol.cc
+++ /dev/null
@@ -1,469 +0,0 @@
-/*
- * Copyright (c) 2002-2005 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: Erik Hallnor
- *          Steve Reinhardt
- *          Ron Dreslinski
- */
-
-/**
- * @file
- * Definitions of CoherenceProtocol.
- */
-
-#include <string>
-
-#include "base/misc.hh"
-#include "mem/cache/miss/mshr.hh"
-#include "mem/cache/cache.hh"
-#include "mem/cache/coherence/coherence_protocol.hh"
-#include "sim/builder.hh"
-
-using namespace std;
-
-
-CoherenceProtocol::StateTransition::StateTransition()
-    : busCmd(MemCmd::InvalidCmd), newState(-1), snoopFunc(invalidTransition)
-{
-}
-
-
-void
-CoherenceProtocol::regStats()
-{
-    // Even though we count all the possible transitions in the
-    // requestCount and snoopCount arrays, most of these are invalid,
-    // so we just select the interesting ones to print here.
-
-    requestCount[Invalid][MemCmd::ReadReq]
-        .name(name() + ".read_invalid")
-        .desc("read misses to invalid blocks")
-        ;
-
-    requestCount[Invalid][MemCmd::WriteReq]
-        .name(name() +".write_invalid")
-        .desc("write misses to invalid blocks")
-        ;
-
-    requestCount[Invalid][MemCmd::SoftPFReq]
-        .name(name() +".swpf_invalid")
-        .desc("soft prefetch misses to invalid blocks")
-        ;
-
-    requestCount[Invalid][MemCmd::HardPFReq]
-        .name(name() +".hwpf_invalid")
-        .desc("hard prefetch misses to invalid blocks")
-        ;
-
-    requestCount[Shared][MemCmd::WriteReq]
-        .name(name() + ".write_shared")
-        .desc("write misses to shared blocks")
-        ;
-
-    requestCount[Owned][MemCmd::WriteReq]
-        .name(name() + ".write_owned")
-        .desc("write misses to owned blocks")
-        ;
-
-    snoopCount[Shared][MemCmd::ReadReq]
-        .name(name() + ".snoop_read_shared")
-        .desc("read snoops on shared blocks")
-        ;
-
-    snoopCount[Shared][MemCmd::ReadExReq]
-        .name(name() + ".snoop_readex_shared")
-        .desc("readEx snoops on shared blocks")
-        ;
-
-    snoopCount[Shared][MemCmd::UpgradeReq]
-        .name(name() + ".snoop_upgrade_shared")
-        .desc("upgradee snoops on shared blocks")
-        ;
-
-    snoopCount[Modified][MemCmd::ReadReq]
-        .name(name() + ".snoop_read_modified")
-        .desc("read snoops on modified blocks")
-        ;
-
-    snoopCount[Modified][MemCmd::ReadExReq]
-        .name(name() + ".snoop_readex_modified")
-        .desc("readEx snoops on modified blocks")
-        ;
-
-    snoopCount[Owned][MemCmd::ReadReq]
-        .name(name() + ".snoop_read_owned")
-        .desc("read snoops on owned blocks")
-        ;
-
-    snoopCount[Owned][MemCmd::ReadExReq]
-        .name(name() + ".snoop_readex_owned")
-        .desc("readEx snoops on owned blocks")
-        ;
-
-    snoopCount[Owned][MemCmd::UpgradeReq]
-        .name(name() + ".snoop_upgrade_owned")
-        .desc("upgrade snoops on owned blocks")
-        ;
-
-    snoopCount[Exclusive][MemCmd::ReadReq]
-        .name(name() + ".snoop_read_exclusive")
-        .desc("read snoops on exclusive blocks")
-        ;
-
-    snoopCount[Exclusive][MemCmd::ReadExReq]
-        .name(name() + ".snoop_readex_exclusive")
-        .desc("readEx snoops on exclusive blocks")
-        ;
-
-    snoopCount[Shared][MemCmd::WriteInvalidateReq]
-        .name(name() + ".snoop_writeinv_shared")
-        .desc("WriteInvalidate snoops on shared blocks")
-        ;
-
-    snoopCount[Owned][MemCmd::WriteInvalidateReq]
-        .name(name() + ".snoop_writeinv_owned")
-        .desc("WriteInvalidate snoops on owned blocks")
-        ;
-
-    snoopCount[Exclusive][MemCmd::WriteInvalidateReq]
-        .name(name() + ".snoop_writeinv_exclusive")
-        .desc("WriteInvalidate snoops on exclusive blocks")
-        ;
-
-    snoopCount[Modified][MemCmd::WriteInvalidateReq]
-        .name(name() + ".snoop_writeinv_modified")
-        .desc("WriteInvalidate snoops on modified blocks")
-        ;
-
-    snoopCount[Invalid][MemCmd::WriteInvalidateReq]
-        .name(name() + ".snoop_writeinv_invalid")
-        .desc("WriteInvalidate snoops on invalid blocks")
-        ;
-}
-
-
-bool
-CoherenceProtocol::invalidateTrans(BaseCache *cache, PacketPtr &pkt,
-                                   CacheBlk *blk, MSHR *mshr,
-                                   CacheBlk::State & new_state)
-{
-    // invalidate the block
-    new_state = (blk->status & ~stateMask) | Invalid;
-    return false;
-}
-
-
-bool
-CoherenceProtocol::supplyTrans(BaseCache *cache, PacketPtr &pkt,
-                               CacheBlk *blk,
-                               MSHR *mshr,
-                               CacheBlk::State & new_state)
-{
-    return true;
-}
-
-
-bool
-CoherenceProtocol::supplyAndGotoSharedTrans(BaseCache *cache, PacketPtr &pkt,
-                                            CacheBlk *blk,
-                                            MSHR *mshr,
-                                            CacheBlk::State & new_state)
-{
-    new_state = (blk->status & ~stateMask) | Shared;
-    pkt->assertShared();
-    return supplyTrans(cache, pkt, blk, mshr, new_state);
-}
-
-
-bool
-CoherenceProtocol::supplyAndGotoOwnedTrans(BaseCache *cache, PacketPtr &pkt,
-                                           CacheBlk *blk,
-                                           MSHR *mshr,
-                                           CacheBlk::State & new_state)
-{
-    new_state = (blk->status & ~stateMask) | Owned;
-    pkt->assertShared();
-    return supplyTrans(cache, pkt, blk, mshr, new_state);
-}
-
-
-bool
-CoherenceProtocol::supplyAndInvalidateTrans(BaseCache *cache, PacketPtr &pkt,
-                                            CacheBlk *blk,
-                                            MSHR *mshr,
-                                            CacheBlk::State & new_state)
-{
-    new_state = (blk->status & ~stateMask) | Invalid;
-    return supplyTrans(cache, pkt, blk, mshr, new_state);
-}
-
-bool
-CoherenceProtocol::assertShared(BaseCache *cache, PacketPtr &pkt,
-                                            CacheBlk *blk,
-                                            MSHR *mshr,
-                                            CacheBlk::State & new_state)
-{
-    new_state = (blk->status & ~stateMask) | Shared;
-    pkt->assertShared();
-    return false;
-}
-
-CoherenceProtocol::CoherenceProtocol(const string &name,
-                                     const string &protocol,
-                                     const bool doUpgrades)
-    : SimObject(name)
-{
-    // Python should catch this, but in case it doesn't...
-    if (!(protocol == "msi"  || protocol == "mesi" ||
-          protocol == "mosi" || protocol == "moesi")) {
-        fatal("CoherenceProtocol: unrecognized protocol %s\n",  protocol);
-    }
-
-    bool hasOwned = (protocol == "mosi" || protocol == "moesi");
-    bool hasExclusive = (protocol == "mesi" || protocol == "moesi");
-
-    if (hasOwned && !doUpgrades) {
-        fatal("CoherenceProtocol: ownership protocols require upgrade "
-              "transactions\n(write miss on owned block generates ReadExcl, "
-              "which will clobber dirty block)\n");
-    }
-
-    // set up a few shortcuts to save typing & visual clutter
-    typedef MemCmd MC;
-    StateTransition (&tt)[stateMax+1][MC::NUM_MEM_CMDS] = transitionTable;
-
-    MC::Command writeToSharedCmd =
-        doUpgrades ? MC::UpgradeReq : MC::ReadExReq;
-    MC::Command writeToSharedResp =
-        doUpgrades ? MC::UpgradeResp : MC::ReadExResp;
-
-    // Note that all transitions by default cause a panic.
-    // Override the valid transitions with the appropriate actions here.
-
-    //
-    // ----- incoming requests: specify outgoing bus request -----
-    //
-    tt[Invalid][MC::ReadReq].onRequest(MC::ReadReq);
-    // we only support write allocate right now
-    tt[Invalid][MC::WriteReq].onRequest(MC::ReadExReq);
-    tt[Invalid][MC::ReadExReq].onRequest(MC::ReadExReq);
-    tt[Invalid][MC::SwapReq].onRequest(MC::ReadExReq);
-    tt[Invalid][MC::UpgradeReq].onRequest(MC::UpgradeReq);
-    tt[Shared][MC::WriteReq].onRequest(writeToSharedCmd);
-    tt[Shared][MC::ReadExReq].onRequest(MC::ReadExReq);
-    tt[Shared][MC::SwapReq].onRequest(writeToSharedCmd);
-    if (hasOwned) {
-        tt[Owned][MC::WriteReq].onRequest(writeToSharedCmd);
-        tt[Owned][MC::ReadExReq].onRequest(MC::ReadExReq);
-        tt[Owned][MC::SwapReq].onRequest(writeToSharedCmd);
-    }
-
-    // Prefetching causes a read
-    tt[Invalid][MC::SoftPFReq].onRequest(MC::ReadReq);
-    tt[Invalid][MC::HardPFReq].onRequest(MC::ReadReq);
-
-    //
-    // ----- on response to given request: specify new state -----
-    //
-    tt[Invalid][MC::ReadExResp].onResponse(Modified);
-    tt[Shared][writeToSharedResp].onResponse(Modified);
-    // Go to Exclusive state on read response if we have one (will
-    // move into shared if the shared line is asserted in the
-    // getNewState function)
-    //
-    // originally had this as:
-    // tt[Invalid][MC::ReadResp].onResponse(hasExclusive ? Exclusive: Shared);
-    // ...but for some reason that caused a link error...
-    if (hasExclusive) {
-        tt[Invalid][MC::ReadResp].onResponse(Exclusive);
-    } else {
-        tt[Invalid][MC::ReadResp].onResponse(Shared);
-    }
-    if (hasOwned) {
-        tt[Owned][writeToSharedResp].onResponse(Modified);
-    }
-
-    //
-    // ----- bus snoop transition functions -----
-    //
-    tt[Invalid][MC::ReadReq].onSnoop(nullTransition);
-    tt[Invalid][MC::ReadExReq].onSnoop(nullTransition);
-    tt[Invalid][MC::WriteInvalidateReq].onSnoop(invalidateTrans);
-    tt[Shared][MC::ReadReq].onSnoop(hasExclusive
-                                   ? assertShared : nullTransition);
-    tt[Shared][MC::ReadExReq].onSnoop(invalidateTrans);
-    tt[Shared][MC::WriteInvalidateReq].onSnoop(invalidateTrans);
-    if (doUpgrades) {
-        tt[Invalid][MC::UpgradeReq].onSnoop(nullTransition);
-        tt[Shared][MC::UpgradeReq].onSnoop(invalidateTrans);
-    }
-    tt[Modified][MC::ReadExReq].onSnoop(supplyAndInvalidateTrans);
-    tt[Modified][MC::ReadReq].onSnoop(hasOwned
-                                     ? supplyAndGotoOwnedTrans
-                                     : supplyAndGotoSharedTrans);
-    tt[Modified][MC::WriteInvalidateReq].onSnoop(invalidateTrans);
-
-    if (hasExclusive) {
-        tt[Exclusive][MC::ReadReq].onSnoop(assertShared);
-        tt[Exclusive][MC::ReadExReq].onSnoop(invalidateTrans);
-        tt[Exclusive][MC::WriteInvalidateReq].onSnoop(invalidateTrans);
-    }
-
-    if (hasOwned) {
-        tt[Owned][MC::ReadReq].onSnoop(supplyAndGotoOwnedTrans);
-        tt[Owned][MC::ReadExReq].onSnoop(supplyAndInvalidateTrans);
-        tt[Owned][MC::UpgradeReq].onSnoop(invalidateTrans);
-        tt[Owned][MC::WriteInvalidateReq].onSnoop(invalidateTrans);
-    }
-
-    // @todo add in hardware prefetch to this list
-}
-
-
-MemCmd
-CoherenceProtocol::getBusCmd(MemCmd cmdIn, CacheBlk::State state,
-                             MSHR *mshr)
-{
-    state &= stateMask;
-    int cmd_idx = cmdIn.toInt();
-
-    assert(0 <= state && state <= stateMax);
-    assert(0 <= cmd_idx && cmd_idx < MemCmd::NUM_MEM_CMDS);
-
-    MemCmd::Command cmdOut = transitionTable[state][cmd_idx].busCmd;
-
-    assert(cmdOut != MemCmd::InvalidCmd);
-
-    ++requestCount[state][cmd_idx];
-
-    return cmdOut;
-}
-
-
-CacheBlk::State
-CoherenceProtocol::getNewState(PacketPtr pkt, CacheBlk::State oldState)
-{
-    CacheBlk::State state = oldState & stateMask;
-    int cmd_idx = pkt->cmdToIndex();
-
-    assert(0 <= state && state <= stateMax);
-    assert(0 <= cmd_idx && cmd_idx < MemCmd::NUM_MEM_CMDS);
-
-    CacheBlk::State newState = transitionTable[state][cmd_idx].newState;
-
-    //Check if it's exclusive and the shared line was asserted,
-    //then  goto shared instead
-    if (newState == Exclusive && pkt->sharedAsserted()) {
-        newState = Shared;
-    }
-
-    assert(newState != -1);
-
-    //Make sure not to loose any other state information
-    newState = (oldState & ~stateMask) | newState;
-    return newState;
-}
-
-
-bool
-CoherenceProtocol::handleBusRequest(BaseCache *cache, PacketPtr &pkt,
-                                    CacheBlk *blk,
-                                    MSHR *mshr,
-                                    CacheBlk::State & new_state)
-{
-    if (blk == NULL) {
-        // nothing to do if we don't have a block
-        return false;
-    }
-
-    CacheBlk::State state = blk->status & stateMask;
-    int cmd_idx = pkt->cmdToIndex();
-
-    assert(0 <= state && state <= stateMax);
-    assert(0 <= cmd_idx && cmd_idx < MemCmd::NUM_MEM_CMDS);
-
-//    assert(mshr == NULL); // can't currently handle outstanding requests
-    //Check first if MSHR, and also insure, if there is one, that it is not in service
-    assert(!mshr || mshr->inService == 0);
-    ++snoopCount[state][cmd_idx];
-
-    bool ret = transitionTable[state][cmd_idx].snoopFunc(cache, pkt, blk, mshr,
-                                                     new_state);
-
-
-
-    return ret;
-}
-
-bool
-CoherenceProtocol::nullTransition(BaseCache *cache, PacketPtr &pkt,
-                                  CacheBlk *blk, MSHR *mshr,
-                                  CacheBlk::State & new_state)
-{
-    // do nothing
-    if (blk)
-        new_state = blk->status;
-    return false;
-}
-
-
-bool
-CoherenceProtocol::invalidTransition(BaseCache *cache, PacketPtr &pkt,
-                                     CacheBlk *blk, MSHR *mshr,
-                                     CacheBlk::State & new_state)
-{
-    panic("Invalid transition");
-    return false;
-}
-
-#ifndef DOXYGEN_SHOULD_SKIP_THIS
-
-BEGIN_DECLARE_SIM_OBJECT_PARAMS(CoherenceProtocol)
-
-    Param<string> protocol;
-    Param<bool> do_upgrades;
-
-END_DECLARE_SIM_OBJECT_PARAMS(CoherenceProtocol)
-
-
-BEGIN_INIT_SIM_OBJECT_PARAMS(CoherenceProtocol)
-
-    INIT_PARAM(protocol, "name of coherence protocol"),
-    INIT_PARAM_DFLT(do_upgrades, "use upgrade transactions?", true)
-
-END_INIT_SIM_OBJECT_PARAMS(CoherenceProtocol)
-
-
-CREATE_SIM_OBJECT(CoherenceProtocol)
-{
-    return new CoherenceProtocol(getInstanceName(), protocol,
-                                 do_upgrades);
-}
-
-REGISTER_SIM_OBJECT("CoherenceProtocol", CoherenceProtocol)
-
-#endif // DOXYGEN_SHOULD_SKIP_THIS
diff --git a/src/mem/cache/coherence/coherence_protocol.hh b/src/mem/cache/coherence/coherence_protocol.hh
deleted file mode 100644
index 4b8024582..000000000
--- a/src/mem/cache/coherence/coherence_protocol.hh
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * Copyright (c) 2002-2005 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: Erik Hallnor
- *          Ron Dreslinski
- *          Steve Reinhardt
- */
-
-/**
- * @file
- * Declaration of CoherenceProcotol a basic coherence policy.
- */
-#ifndef __COHERENCE_PROTOCOL_HH__
-#define __COHERENCE_PROTOCOL_HH__
-
-#include <string>
-
-#include "sim/sim_object.hh"
-#include "mem/packet.hh"
-#include "mem/cache/cache_blk.hh"
-#include "base/statistics.hh"
-
-class BaseCache;
-class MSHR;
-
-/**
- * A simple coherence policy for the memory hierarchy. Currently implements
- * MSI, MESI, and MOESI protocols.
- */
-class CoherenceProtocol : public SimObject
-{
-  public:
-    /**
-     * Contruct and initialize this policy.
-     * @param name The name of this policy.
-     * @param protocol The string representation of the protocol to use.
-     * @param doUpgrades True if bus upgrades should be used.
-     */
-    CoherenceProtocol(const std::string &name, const std::string &protocol,
-                      const bool doUpgrades);
-
-    /**
-     * Destructor.
-     */
-    virtual ~CoherenceProtocol() {};
-
-    /**
-     * Register statistics
-     */
-    virtual void regStats();
-
-    /**
-     * Get the proper bus command for the given command and status.
-     * @param cmd The request's command.
-     * @param status The current state of the cache block.
-     * @param mshr The MSHR matching the request.
-     * @return The proper bus command, as determined by the protocol.
-     */
-    MemCmd getBusCmd(MemCmd cmd, CacheBlk::State status,
-                         MSHR *mshr = NULL);
-
-    /**
-     * Return the proper state given the current state and the bus response.
-     * @param pkt The bus response.
-     * @param oldState The current block state.
-     * @return The new state.
-     */
-    CacheBlk::State getNewState(PacketPtr pkt,
-                                CacheBlk::State oldState = 0);
-
-    /**
-     * Handle snooped bus requests.
-     * @param cache The cache that snooped the request.
-     * @param pkt The snooped bus request.
-     * @param blk The cache block corresponding to the request, if any.
-     * @param mshr The MSHR corresponding to the request, if any.
-     * @param new_state The new coherence state of the block.
-     * @return True if the request should be satisfied locally.
-     */
-    bool handleBusRequest(BaseCache *cache, PacketPtr &pkt, CacheBlk *blk,
-                          MSHR *mshr, CacheBlk::State &new_state);
-
-  protected:
-    /** Snoop function type. */
-    typedef bool (*SnoopFuncType)(BaseCache *, PacketPtr &, CacheBlk *,
-                                  MSHR *, CacheBlk::State&);
-
-    //
-    // Standard snoop transition functions
-    //
-
-    /**
-     * Do nothing transition.
-     */
-    static bool nullTransition(BaseCache *, PacketPtr &, CacheBlk *,
-                               MSHR *, CacheBlk::State&);
-
-    /**
-     * Invalid transition, basically panic.
-     */
-    static bool invalidTransition(BaseCache *, PacketPtr &, CacheBlk *,
-                                  MSHR *, CacheBlk::State&);
-
-    /**
-     * Invalidate block, move to Invalid state.
-     */
-    static bool invalidateTrans(BaseCache *, PacketPtr &, CacheBlk *,
-                                MSHR *, CacheBlk::State&);
-
-    /**
-     * Supply data, no state transition.
-     */
-    static bool supplyTrans(BaseCache *, PacketPtr &, CacheBlk *,
-                            MSHR *, CacheBlk::State&);
-
-    /**
-     * Supply data and go to Shared state.
-     */
-    static bool supplyAndGotoSharedTrans(BaseCache *, PacketPtr &, CacheBlk *,
-                                         MSHR *, CacheBlk::State&);
-
-    /**
-     * Supply data and go to Owned state.
-     */
-    static bool supplyAndGotoOwnedTrans(BaseCache *, PacketPtr &, CacheBlk *,
-                                        MSHR *, CacheBlk::State&);
-
-    /**
-     * Invalidate block, supply data, and go to Invalid state.
-     */
-    static bool supplyAndInvalidateTrans(BaseCache *, PacketPtr &, CacheBlk *,
-                                         MSHR *, CacheBlk::State&);
-
-    /**
-     * Assert the shared line for a block that is shared/exclusive.
-     */
-    static bool assertShared(BaseCache *, PacketPtr &, CacheBlk *,
-                                         MSHR *, CacheBlk::State&);
-
-    /**
-     * Definition of protocol state transitions.
-     */
-    class StateTransition
-    {
-        friend class CoherenceProtocol;
-
-        /** The bus command of this transition. */
-        Packet::Command busCmd;
-        /** The state to transition to. */
-        int newState;
-        /** The snoop function for this transition. */
-        SnoopFuncType snoopFunc;
-
-        /**
-         * Constructor, defaults to invalid transition.
-         */
-        StateTransition();
-
-        /**
-         * Initialize bus command.
-         * @param cmd The bus command to use.
-         */
-        void onRequest(Packet::Command cmd)
-        {
-            busCmd = cmd;
-        }
-
-        /**
-         * Set the transition state.
-         * @param s The new state.
-         */
-        void onResponse(CacheBlk::State s)
-        {
-            newState = s;
-        }
-
-        /**
-         * Initialize the snoop function.
-         * @param f The new snoop function.
-         */
-        void onSnoop(SnoopFuncType f)
-        {
-            snoopFunc = f;
-        }
-    };
-
-    friend class CoherenceProtocol::StateTransition;
-
-    /** Mask to select status bits relevant to coherence protocol. */
-    static const int stateMask = BlkValid | BlkWritable | BlkDirty;
-
-    /** The Modified (M) state. */
-    static const int Modified = BlkValid | BlkWritable | BlkDirty;
-    /** The Owned (O) state. */
-    static const int Owned = BlkValid | BlkDirty;
-    /** The Exclusive (E) state. */
-    static const int Exclusive = BlkValid | BlkWritable;
-    /** The Shared (S) state. */
-    static const int Shared = BlkValid;
-    /** The Invalid (I) state. */
-    static const int Invalid = 0;
-
-    /**
-     * Maximum state encoding value (used to size transition lookup
-     * table).  Could be more than number of states, depends on
-     * encoding of status bits.
-     */
-    static const int stateMax = stateMask;
-
-    /**
-     * The table of all possible transitions, organized by starting state and
-     * request command.
-     */
-    StateTransition transitionTable[stateMax+1][MemCmd::NUM_MEM_CMDS];
-
-    /**
-     * @addtogroup CoherenceStatistics
-     * @{
-     */
-    /**
-     * State accesses from parent cache.
-     */
-    Stats::Scalar<> requestCount[stateMax+1][MemCmd::NUM_MEM_CMDS];
-    /**
-     * State accesses from snooped requests.
-     */
-    Stats::Scalar<> snoopCount[stateMax+1][MemCmd::NUM_MEM_CMDS];
-    /**
-     * @}
-     */
-};
-
-#endif // __COHERENCE_PROTOCOL_HH__
diff --git a/src/mem/cache/coherence/simple_coherence.hh b/src/mem/cache/coherence/simple_coherence.hh
deleted file mode 100644
index 214828ca7..000000000
--- a/src/mem/cache/coherence/simple_coherence.hh
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * Copyright (c) 2003-2005 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: Erik Hallnor
- *          Ron Dreslinski
- */
-
-/**
- * @file
- * Declaration of a simple coherence policy.
- */
-
-#ifndef __SIMPLE_COHERENCE_HH__
-#define __SIMPLE_COHERENCE_HH__
-
-#include <string>
-
-#include "mem/packet.hh"
-#include "mem/cache/cache_blk.hh"
-#include "mem/cache/miss/mshr_queue.hh"
-#include "mem/cache/coherence/coherence_protocol.hh"
-
-class BaseCache;
-
-/**
- * A simple MP coherence policy. This policy assumes an atomic bus and only one
- * level of cache.
- */
-class SimpleCoherence
-{
-  protected:
-    /** Pointer to the parent cache. */
-    BaseCache *cache;
-    /** Pointer to the coherence protocol. */
-    CoherenceProtocol *protocol;
-
-  public:
-    /**
-     * Construct and initialize this coherence policy.
-     * @param _protocol The coherence protocol to use.
-     */
-    SimpleCoherence(CoherenceProtocol *_protocol)
-        : protocol(_protocol)
-    {
-    }
-
-    /**
-     * Set the pointer to the parent cache.
-     * @param _cache The parent cache.
-     */
-    void setCache(BaseCache *_cache)
-    {
-        cache = _cache;
-    }
-
-    /**
-     * Register statistics.
-     * @param name The name to prepend to stat descriptions.
-     */
-    void regStats(const std::string &name)
-    {
-    }
-
-    /**
-     * This policy does not forward invalidates, return NULL.
-     * @return NULL.
-     */
-    PacketPtr getPacket()
-    {
-        return NULL;
-    }
-
-    /**
-     * Return the proper state given the current state and the bus response.
-     * @param pkt The bus response.
-     * @param current The current block state.
-     * @return The new state.
-     */
-    CacheBlk::State getNewState(PacketPtr pkt,
-                                CacheBlk::State current = 0)
-    {
-        return protocol->getNewState(pkt, current);
-    }
-
-    /**
-     * Handle snooped bus requests.
-     * @param pkt The snooped bus request.
-     * @param blk The cache block corresponding to the request, if any.
-     * @param mshr The MSHR corresponding to the request, if any.
-     * @param new_state Return the new state for the block.
-     */
-    bool handleBusRequest(PacketPtr &pkt, CacheBlk *blk, MSHR *mshr,
-                          CacheBlk::State &new_state)
-    {
-//	assert(mshr == NULL);
-//Got rid of, there could be an MSHR, but it can't be in service
-        if (blk != NULL)
-        {
-            if (pkt->cmd != MemCmd::Writeback) {
-                return protocol->handleBusRequest(cache, pkt, blk, mshr,
-                                              new_state);
-            }
-            else { //It is a writeback, must be ownership protocol, just keep state
-                new_state = blk->status;
-            }
-        }
-        return false;
-    }
-
-    /**
-     * Get the proper bus command for the given command and status.
-     * @param cmd The request's command.
-     * @param state The current state of the cache block.
-     * @return The proper bus command, as determined by the protocol.
-     */
-    MemCmd getBusCmd(MemCmd cmd,
-                                  CacheBlk::State state)
-    {
-        if (cmd == MemCmd::Writeback) return MemCmd::Writeback;
-        return protocol->getBusCmd(cmd, state);
-    }
-
-    /**
-     * Return true if this coherence policy can handle fast cache writes.
-     */
-    bool allowFastWrites() { return false; }
-
-    bool hasProtocol() { return true; }
-};
-
-#endif //__SIMPLE_COHERENCE_HH__
-
-
-
-
-
-
-
-