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/*
* Copyright (c) 2013-2015 Advanced Micro Devices, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 HOLDER 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.
*/
#ifndef __MEM_RUBY_SYSTEM_VIPERCOALESCER_HH__
#define __MEM_RUBY_SYSTEM_VIPERCOALESCER_HH__
#include <iostream>
#include "mem/ruby/common/Address.hh"
#include "mem/ruby/common/Consumer.hh"
#include "mem/ruby/protocol/PrefetchBit.hh"
#include "mem/ruby/protocol/RubyAccessMode.hh"
#include "mem/ruby/protocol/RubyRequestType.hh"
#include "mem/ruby/system/GPUCoalescer.hh"
#include "mem/ruby/system/RubyPort.hh"
namespace gem5
{
struct VIPERCoalescerParams;
namespace ruby
{
class DataBlock;
class CacheMsg;
struct MachineID;
class CacheMemory;
class VIPERCoalescer : public GPUCoalescer
{
public:
typedef VIPERCoalescerParams Params;
VIPERCoalescer(const Params &);
~VIPERCoalescer();
void writeCompleteCallback(Addr address, uint64_t instSeqNum);
void invTCPCallback(Addr address);
RequestStatus makeRequest(PacketPtr pkt) override;
void issueRequest(CoalescedRequest* crequest) override;
private:
void invTCP();
// make write-complete response packets from original write request packets
void makeWriteCompletePkts(CoalescedRequest* crequest);
// current cache invalidation packet
// nullptr if there is no active cache invalidation request
PacketPtr m_cache_inv_pkt;
// number of remaining cache lines to be invalidated in TCP
int m_num_pending_invs;
// a map of instruction sequence number and corresponding pending
// write-complete response packets. Each write-complete response
// corresponds to a pending store request that is waiting for
// writeCompleteCallback. We may have multiple pending store requests per
// wavefront at a time. Each time writeCompleteCallback is called, an entry
// with a corresponding seqNum is popped off from map and returned to
// compute unit.
std::unordered_map<uint64_t, std::vector<PacketPtr>> m_writeCompletePktMap;
};
} // namespace ruby
} // namespace gem5
#endif //__MEM_RUBY_SYSTEM_VIPERCOALESCER_HH__