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/*
* Copyright (c) 2008 Princeton University
* 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
*/
#include "mem/ruby/network/garnet/fixed-pipeline/OutputUnit_d.hh"
#include "mem/ruby/network/garnet/fixed-pipeline/Router_d.hh"
using namespace std;
OutputUnit_d::OutputUnit_d(int id, Router_d *router)
{
m_id = id;
m_router = router;
m_num_vcs = m_router->get_num_vcs();
m_out_buffer = new flitBuffer_d();
for(int i = 0; i < m_num_vcs; i++)
{
m_outvc_state.insertAtBottom(new OutVcState_d(i, m_router->get_net_ptr()));
}
}
OutputUnit_d::~OutputUnit_d()
{
delete m_out_buffer;
m_outvc_state.deletePointers();
}
void OutputUnit_d::decrement_credit(int out_vc)
{
m_outvc_state[out_vc]->decrement_credit();
m_router->update_incredit(m_outvc_state[out_vc]->get_inport(), m_outvc_state[out_vc]->get_invc(), m_outvc_state[out_vc]->get_credit_count());
}
void OutputUnit_d::wakeup()
{
if(m_credit_link->isReady())
{
flit_d *t_flit = m_credit_link->consumeLink();
int out_vc = t_flit->get_vc();
m_outvc_state[out_vc]->increment_credit();
m_router->update_incredit(m_outvc_state[out_vc]->get_inport(), m_outvc_state[out_vc]->get_invc(), m_outvc_state[out_vc]->get_credit_count());
if(t_flit->is_free_signal())
set_vc_state(IDLE_, out_vc);
delete t_flit;
}
}
flitBuffer_d* OutputUnit_d::getOutQueue()
{
return m_out_buffer;
}
void OutputUnit_d::set_out_link(NetworkLink_d *link)
{
m_out_link = link;
}
void OutputUnit_d::set_credit_link(CreditLink_d *credit_link)
{
m_credit_link = credit_link;
}
void OutputUnit_d::update_vc(int vc, int in_port, int in_vc)
{
m_outvc_state[vc]->setState(ACTIVE_, g_eventQueue_ptr->getTime() + 1);
m_outvc_state[vc]->set_inport(in_port);
m_outvc_state[vc]->set_invc(in_vc);
m_router->update_incredit(in_port, in_vc, m_outvc_state[vc]->get_credit_count());
}
void OutputUnit_d::printConfig(ostream& out)
{
out << endl;
out << "OutputUnit Configuration" << endl;
out << "---------------------" << endl;
out << "id = " << m_id << endl;
out << "Out link is " << m_out_link->get_id() << endl;
}
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