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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.
*/
/*
* Network.h
*
* Description: The Network class is the base class for classes that
* implement the interconnection network between components
* (processor/cache components and memory/directory components). The
* interconnection network as described here is not a physical
* network, but a programming concept used to implement all
* communication between components. Thus parts of this 'network'
* will model the on-chip connections between cache controllers and
* directory controllers as well as the links between chip and network
* switches.
*
* $Id$
* */
#ifndef NETWORK_H
#define NETWORK_H
#include "mem/ruby/common/Global.hh"
#include "mem/ruby/system/NodeID.hh"
#include "mem/protocol/MessageSizeType.hh"
class NetDest;
class MessageBuffer;
class Throttle;
class Network {
public:
// Constructors
Network() {}
// Destructor
virtual ~Network() {}
// Public Methods
static Network* createNetwork(int nodes);
// returns the queue requested for the given component
virtual MessageBuffer* getToNetQueue(NodeID id, bool ordered, int netNumber) = 0;
virtual MessageBuffer* getFromNetQueue(NodeID id, bool ordered, int netNumber) = 0;
virtual const Vector<Throttle*>* getThrottles(NodeID id) const { return NULL; }
virtual int getNumNodes() {return 1;}
virtual void makeOutLink(SwitchID src, NodeID dest, const NetDest& routing_table_entry, int link_latency, int link_weight, int bw_multiplier, bool isReconfiguration) = 0;
virtual void makeInLink(SwitchID src, NodeID dest, const NetDest& routing_table_entry, int link_latency, int bw_multiplier, bool isReconfiguration) = 0;
virtual void makeInternalLink(SwitchID src, NodeID dest, const NetDest& routing_table_entry, int link_latency, int link_weight, int bw_multiplier, bool isReconfiguration) = 0;
virtual void reset() = 0;
virtual void printStats(ostream& out) const = 0;
virtual void clearStats() = 0;
virtual void printConfig(ostream& out) const = 0;
virtual void print(ostream& out) const = 0;
private:
// Private Methods
// Private copy constructor and assignment operator
Network(const Network& obj);
Network& operator=(const Network& obj);
// Data Members (m_ prefix)
};
// Output operator declaration
ostream& operator<<(ostream& out, const Network& obj);
// ******************* Definitions *******************
// Output operator definition
extern inline
ostream& operator<<(ostream& out, const Network& obj)
{
obj.print(out);
out << flush;
return out;
}
// Code to map network message size types to an integer number of bytes
const int CONTROL_MESSAGE_SIZE = 8;
const int DATA_MESSAGE_SIZE = (64+8);
extern inline
int MessageSizeType_to_int(MessageSizeType size_type)
{
switch(size_type) {
case MessageSizeType_Undefined:
ERROR_MSG("Can't convert Undefined MessageSizeType to integer");
break;
case MessageSizeType_Control:
case MessageSizeType_Request_Control:
case MessageSizeType_Reissue_Control:
case MessageSizeType_Response_Control:
case MessageSizeType_Writeback_Control:
case MessageSizeType_Forwarded_Control:
case MessageSizeType_Invalidate_Control:
case MessageSizeType_Unblock_Control:
case MessageSizeType_Persistent_Control:
case MessageSizeType_Completion_Control:
return CONTROL_MESSAGE_SIZE;
break;
case MessageSizeType_Data:
case MessageSizeType_Response_Data:
case MessageSizeType_ResponseLocal_Data:
case MessageSizeType_ResponseL2hit_Data:
case MessageSizeType_Writeback_Data:
return DATA_MESSAGE_SIZE;
break;
default:
ERROR_MSG("Invalid range for type MessageSizeType");
break;
}
return 0;
}
#endif //NETWORK_H
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