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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.
*/
/*
* OutputUnit_d.hh
*
* Niket Agarwal, Princeton University
*
* */
#ifndef OUTPUT_UNIT_D_H
#define OUTPUT_UNIT_D_H
#include "mem/ruby/network/garnet-fixed-pipeline/NetworkHeader.hh"
#include "mem/ruby/common/Consumer.hh"
#include "mem/ruby/network/garnet-fixed-pipeline/flitBuffer_d.hh"
#include "mem/ruby/network/garnet-fixed-pipeline/OutVcState_d.hh"
#include "mem/ruby/network/garnet-fixed-pipeline/NetworkLink_d.hh"
#include "mem/ruby/network/garnet-fixed-pipeline/CreditLink_d.hh"
class Router_d;
class OutputUnit_d : public Consumer {
public:
OutputUnit_d(int id, Router_d *router);
~OutputUnit_d();
void set_out_link(NetworkLink_d *link);
void set_credit_link(CreditLink_d *credit_link);
void wakeup();
flitBuffer_d* getOutQueue();
void printConfig(ostream& out);
void update_vc(int vc, int in_port, int in_vc);
void print(ostream& out) const {};
int get_credit_cnt(int vc) { return m_outvc_state[vc]->get_credit_count(); }
void decrement_credit(int out_vc);
inline int get_outlink_id()
{
return m_out_link->get_id();
}
inline void set_vc_state(VC_state_type state, int vc)
{
m_outvc_state[vc]->setState(state, g_eventQueue_ptr->getTime() + 1);
}
inline bool is_vc_idle(int vc)
{
return (m_outvc_state[vc]->isInState(IDLE_, g_eventQueue_ptr->getTime()) );
}
inline void insert_flit(flit_d *t_flit)
{
m_out_buffer->insert(t_flit);
g_eventQueue_ptr->scheduleEvent(m_out_link, 1);
}
private:
int m_id;
int m_num_vcs;
Router_d *m_router;
NetworkLink_d *m_out_link;
CreditLink_d *m_credit_link;
flitBuffer_d *m_out_buffer; // This is for the network link to consume
Vector<OutVcState_d *> m_outvc_state; // vc state of downstream router
};
#endif
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