5ffc165939
This patch adds support to different entities in the ruby memory system for more reliable functional read/write accesses. Only the simple network has been augmented as of now. Later on Garnet will also support functional accesses. The patch adds functional access code to all the different types of messages that protocols can send around. These messages are functionally accessed by going through the buffers maintained by the network entities. The patch also rectifies some of the bugs found in coherence protocols while testing the patch. With this patch applied, functional writes always succeed. But functional reads can still fail.
105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
/*
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* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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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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#ifndef __MEM_RUBY_SLICC_INTERFACE_NETWORKMESSAGE_HH__
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#define __MEM_RUBY_SLICC_INTERFACE_NETWORKMESSAGE_HH__
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#include <iostream>
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#include "base/refcnt.hh"
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#include "mem/protocol/MessageSizeType.hh"
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#include "mem/ruby/common/NetDest.hh"
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#include "mem/ruby/slicc_interface/Message.hh"
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class Address;
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class NetworkMessage;
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typedef RefCountingPtr<NetworkMessage> NetMsgPtr;
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class NetworkMessage : public Message
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{
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public:
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NetworkMessage()
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: m_internal_dest_valid(false)
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{ }
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NetworkMessage(const NetworkMessage &other)
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: Message(other), m_internal_dest(other.m_internal_dest),
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m_internal_dest_valid(other.m_internal_dest_valid)
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{ }
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virtual ~NetworkMessage() { }
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virtual const NetDest& getDestination() const = 0;
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virtual NetDest& getDestination() = 0;
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virtual const MessageSizeType& getMessageSize() const = 0;
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virtual MessageSizeType& getMessageSize() = 0;
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const NetDest&
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getInternalDestination() const
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{
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if (m_internal_dest_valid == false)
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return getDestination();
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return m_internal_dest;
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}
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NetDest&
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getInternalDestination()
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{
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if (m_internal_dest_valid == false) {
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m_internal_dest = getDestination();
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m_internal_dest_valid = true;
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}
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return m_internal_dest;
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}
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virtual void print(std::ostream& out) const = 0;
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int getIncomingLink() const { return incoming_link; }
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void setIncomingLink(int link) { incoming_link = link; }
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int getVnet() const { return vnet; }
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void setVnet(int net) { vnet = net; }
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private:
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NetDest m_internal_dest;
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bool m_internal_dest_valid;
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int incoming_link;
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int vnet;
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};
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inline std::ostream&
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operator<<(std::ostream& out, const NetworkMessage& obj)
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{
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obj.print(out);
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out << std::flush;
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return out;
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}
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#endif // __MEM_RUBY_SLICC_INTERFACE_NETWORKMESSAGE_HH__
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