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Diffstat (limited to 'src/mem/ruby/network/garnet-fixed-pipeline/VirtualChannel_d.hh')
-rw-r--r-- | src/mem/ruby/network/garnet-fixed-pipeline/VirtualChannel_d.hh | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/mem/ruby/network/garnet-fixed-pipeline/VirtualChannel_d.hh b/src/mem/ruby/network/garnet-fixed-pipeline/VirtualChannel_d.hh new file mode 100644 index 000000000..111837122 --- /dev/null +++ b/src/mem/ruby/network/garnet-fixed-pipeline/VirtualChannel_d.hh @@ -0,0 +1,119 @@ +/* + * 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. + */ + +/* + * VirtualChannel_d.h + * + * Niket Agarwal, Princeton University + * + * */ + +#ifndef VIRTUAL_CHANNEL_D_H +#define VIRTUAL_CHANNEL_D_H + +#include "NetworkHeader.hh" +#include "flitBuffer_d.hh" + +class VirtualChannel_d { +public: + VirtualChannel_d(int id); + ~VirtualChannel_d(); + + bool need_stage(VC_state_type state, flit_stage stage); + bool need_stage_nextcycle(VC_state_type state, flit_stage stage); + void set_outport(int outport); + void grant_vc(int out_vc); + + inline Time get_enqueue_time() + { + return m_enqueue_time; + } + + inline void set_enqueue_time(Time 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 isReady() + { + return m_input_buffer->isReady(); + } + 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 void insertFlit(flit_d *t_flit) + { + m_input_buffer->insert(t_flit); + } + inline void set_state(VC_state_type m_state) + { + m_vc_state.first = m_state; + m_vc_state.second = g_eventQueue_ptr->getTime() + 1; + } + + inline flit_d* peekTopFlit() + { + return m_input_buffer->peekTopFlit(); + } + + inline flit_d* getTopFlit() + { + return m_input_buffer->getTopFlit(); + } + +private: + int m_id; + flitBuffer_d *m_input_buffer; + pair<VC_state_type, Time> m_vc_state; // I/R/V/A/C + int route; + Time m_enqueue_time; + int m_output_vc; + int m_credit_count; +}; +#endif |