c08351f4d3
Now that the gem5 protocols are split out, it would be nice to put them in their own protocol directory. It's also confusing to have files called *_protocol which are not in the protocol directory. Change-Id: I7475ee111630050a2421816dfd290921baab9f71 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/20230 Reviewed-by: Gabe Black <gabeblack@google.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Gabe Black <gabeblack@google.com> Tested-by: kokoro <noreply+kokoro@google.com>
110 lines
3.9 KiB
C++
110 lines
3.9 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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/*
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* The actual modelled switch. It use the perfect switch and a
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* Throttle object to control and bandwidth and timing *only for the
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* output port*. So here we have un-realistic modelling, since the
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* order of PerfectSwitch and Throttle objects get woke up affect the
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* message timing. A more accurate model would be having two set of
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* system states, one for this cycle, one for next cycle. And on the
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* cycle boundary swap the two set of states.
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*/
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#ifndef __MEM_RUBY_NETWORK_SIMPLE_SWITCH_HH__
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#define __MEM_RUBY_NETWORK_SIMPLE_SWITCH_HH__
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#include <iostream>
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#include <vector>
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#include "mem/packet.hh"
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#include "mem/ruby/common/TypeDefines.hh"
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#include "mem/ruby/network/BasicRouter.hh"
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#include "mem/ruby/protocol/MessageSizeType.hh"
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#include "params/Switch.hh"
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class MessageBuffer;
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class PerfectSwitch;
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class NetDest;
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class SimpleNetwork;
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class Throttle;
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class Switch : public BasicRouter
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{
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public:
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typedef SwitchParams Params;
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Switch(const Params *p);
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~Switch();
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void init();
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void addInPort(const std::vector<MessageBuffer*>& in);
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void addOutPort(const std::vector<MessageBuffer*>& out,
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const NetDest& routing_table_entry,
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Cycles link_latency, int bw_multiplier);
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const Throttle* getThrottle(LinkID link_number) const;
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void resetStats();
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void collateStats();
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void regStats();
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const Stats::Formula & getMsgCount(unsigned int type) const
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{ return m_msg_counts[type]; }
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void print(std::ostream& out) const;
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void init_net_ptr(SimpleNetwork* net_ptr) { m_network_ptr = net_ptr; }
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bool functionalRead(Packet *);
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uint32_t functionalWrite(Packet *);
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private:
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// Private copy constructor and assignment operator
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Switch(const Switch& obj);
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Switch& operator=(const Switch& obj);
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PerfectSwitch* m_perfect_switch;
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SimpleNetwork* m_network_ptr;
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std::vector<Throttle*> m_throttles;
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std::vector<MessageBuffer*> m_port_buffers;
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unsigned m_num_connected_buffers;
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// Statistical variables
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Stats::Formula m_avg_utilization;
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Stats::Formula m_msg_counts[MessageSizeType_NUM];
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Stats::Formula m_msg_bytes[MessageSizeType_NUM];
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};
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inline std::ostream&
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operator<<(std::ostream& out, const Switch& 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_NETWORK_SIMPLE_SWITCH_HH__
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