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/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* 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.
*/
#include <iostream>
#include "mem/ruby/storebuffer/stb_interface.hh"
StoreBuffer *
createNewSTB(uint32 id, uint32 block_bits, int storebuffer_size)
{
StoreBuffer *stb = new StoreBuffer(id, block_bits, storebuffer_size);
return stb;
}
storebuffer_status_t
handleStore(StoreBuffer *storebuffer, const RubyRequest &request)
{
assert(request.type == RubyRequestType_ST);
if (storebuffer->storeBufferFull()){
return WB_FULL;
} else if (storebuffer->storeBufferFlushing()) {
return WB_FLUSHING;
} else {
storebuffer->addToStoreBuffer(request);
return WB_OK;
}
}
uint64_t
handleLoad(StoreBuffer *storebuffer, const RubyRequest &request)
{
assert(request.type == RubyRequestType_LD);
return storebuffer->handleLoad(request);
}
#if 0
uint64_t
handleAtomic(StoreBuffer *storebuffer, const RubyRequest &request)
{
// flush the store buffer
storebuffer->flushStoreBuffer();
// let storebuffer issue atomic
// return storebuffer->issueAtomic(request);
}
#endif
void
flushSTB(StoreBuffer *storebuffer)
{
// in in-order can't get a request to flushSTB if already flushing
// on out of order, have to check if already flushing
storebuffer->flushStoreBuffer();
}
void
registerHitCallback(StoreBuffer *storebuffer,
void (*hit_callback)(int64_t access_id))
{
storebuffer->registerHitCallback(hit_callback);
}
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