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/*
* Copyright (c) 2008 Princeton University
* Copyright (c) 2016 Georgia Institute of Technology
* 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.
*
* Authors: Niket Agarwal
* Tushar Krishna
*/
#ifndef __MEM_RUBY_NETWORK_GARNET2_0_VIRTUALCHANNEL_HH__
#define __MEM_RUBY_NETWORK_GARNET2_0_VIRTUALCHANNEL_HH__
#include <utility>
#include "mem/ruby/network/garnet2.0/CommonTypes.hh"
#include "mem/ruby/network/garnet2.0/flitBuffer.hh"
class VirtualChannel
{
public:
VirtualChannel(int id);
~VirtualChannel();
bool need_stage(flit_stage stage, Cycles time);
void set_idle(Cycles curTime);
void set_active(Cycles curTime);
void set_outvc(int outvc) { m_output_vc = outvc; }
inline int get_outvc() { return m_output_vc; }
void set_outport(int outport) { m_output_port = outport; };
inline int get_outport() { return m_output_port; }
inline Cycles get_enqueue_time() { return m_enqueue_time; }
inline void set_enqueue_time(Cycles time) { m_enqueue_time = time; }
inline VC_state_type get_state() { return m_vc_state.first; }
inline bool isReady(Cycles curTime)
{
return m_input_buffer->isReady(curTime);
}
inline void
insertFlit(flit *t_flit)
{
m_input_buffer->insert(t_flit);
}
inline void
set_state(VC_state_type m_state, Cycles curTime)
{
m_vc_state.first = m_state;
m_vc_state.second = curTime;
}
inline flit*
peekTopFlit()
{
return m_input_buffer->peekTopFlit();
}
inline flit*
getTopFlit()
{
return m_input_buffer->getTopFlit();
}
uint32_t functionalWrite(Packet *pkt);
private:
int m_id;
flitBuffer *m_input_buffer;
std::pair<VC_state_type, Cycles> m_vc_state;
int m_output_port;
Cycles m_enqueue_time;
int m_output_vc;
};
#endif // __MEM_RUBY_NETWORK_GARNET2_0_VIRTUALCHANNEL_HH__
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