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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
- */
-
-#ifndef __MEM_RUBY_NETWORK_GARNET_FIXED_PIPELINE_VIRTUAL_CHANNEL_D_HH__
-#define __MEM_RUBY_NETWORK_GARNET_FIXED_PIPELINE_VIRTUAL_CHANNEL_D_HH__
-
-#include <utility>
-
-#include "mem/ruby/network/garnet/fixed-pipeline/flitBuffer_d.hh"
-#include "mem/ruby/network/garnet/NetworkHeader.hh"
-
-class VirtualChannel_d
-{
- public:
- VirtualChannel_d(int id);
- ~VirtualChannel_d();
-
- bool need_stage(VC_state_type state, flit_stage stage, Cycles curTime);
- void set_outport(int outport);
- void grant_vc(int out_vc, Cycles curTime);
-
- 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 int get_outvc() { return m_output_vc; }
- inline bool has_credits() { return (m_credit_count > 0); }
- inline int get_route() { return route; }
- inline void update_credit(int credit) { m_credit_count = credit; }
- inline void increment_credit() { m_credit_count++; }
-
- inline bool isReady(Cycles curTime)
- {
- return m_input_buffer->isReady(curTime);
- }
-
- inline void
- insertFlit(flit_d *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_d*
- peekTopFlit()
- {
- return m_input_buffer->peekTopFlit();
- }
-
- inline flit_d*
- getTopFlit()
- {
- return m_input_buffer->getTopFlit();
- }
-
- uint32_t functionalWrite(Packet *pkt);
-
- private:
- int m_id;
- flitBuffer_d *m_input_buffer;
- std::pair<VC_state_type, Cycles> m_vc_state; // I/R/V/A/C
- int route;
- Cycles m_enqueue_time;
- int m_output_vc;
- int m_credit_count;
-};
-
-#endif // __MEM_RUBY_NETWORK_GARNET_FIXED_PIPELINE_VIRTUAL_CHANNEL_D_HH__