diff options
Diffstat (limited to 'src/mem/ruby/network/garnet-fixed-pipeline/Switch_d.cc')
| -rw-r--r-- | src/mem/ruby/network/garnet-fixed-pipeline/Switch_d.cc | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/src/mem/ruby/network/garnet-fixed-pipeline/Switch_d.cc b/src/mem/ruby/network/garnet-fixed-pipeline/Switch_d.cc new file mode 100644 index 000000000..be5469696 --- /dev/null +++ b/src/mem/ruby/network/garnet-fixed-pipeline/Switch_d.cc @@ -0,0 +1,98 @@ +/* + * 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. + */ + +/* + * Switch_d.C + * + * Niket Agarwal, Princeton University + * + * */ + +#include "Switch_d.hh" +#include "Router_d.hh" +#include "OutputUnit_d.hh" + +Switch_d::Switch_d(Router_d *router) +{ + m_router = router; + m_num_vcs = m_router->get_num_vcs(); + m_crossbar_activity = 0; +} + +Switch_d::~Switch_d() +{ + m_switch_buffer.deletePointers(); +} + +void Switch_d::init() +{ + m_output_unit = m_router->get_outputUnit_ref(); + + m_num_inports = m_router->get_num_inports(); + m_switch_buffer.setSize(m_num_inports); + for(int i = 0; i < m_num_inports; i++) + { + m_switch_buffer[i] = new flitBuffer_d(); + } +} + +void Switch_d::wakeup() +{ + DEBUG_MSG(NETWORK_COMP, HighPrio, "Switch woke up"); + DEBUG_EXPR(NETWORK_COMP, HighPrio, g_eventQueue_ptr->getTime()); + + for(int inport = 0; inport < m_num_inports; inport++) + { + if(!m_switch_buffer[inport]->isReady()) + continue; + flit_d *t_flit = m_switch_buffer[inport]->peekTopFlit(); + if(t_flit->is_stage(ST_)) + { + int outport = t_flit->get_outport(); + t_flit->advance_stage(LT_); + t_flit->set_time(g_eventQueue_ptr->getTime() + 1); + m_output_unit[outport]->insert_flit(t_flit); // This will take care of waking up the Network Link + m_switch_buffer[inport]->getTopFlit(); + m_crossbar_activity++; + } + } + check_for_wakeup(); +} + +void Switch_d::check_for_wakeup() +{ + for(int inport = 0; inport < m_num_inports; inport++) + { + if(m_switch_buffer[inport]->isReadyForNext()) + { + g_eventQueue_ptr->scheduleEvent(this, 1); + break; + } + } +} + |