diff options
Diffstat (limited to 'src/mem/ruby/network/garnet/fixed-pipeline/InputUnit_d.cc')
-rw-r--r-- | src/mem/ruby/network/garnet/fixed-pipeline/InputUnit_d.cc | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/mem/ruby/network/garnet/fixed-pipeline/InputUnit_d.cc b/src/mem/ruby/network/garnet/fixed-pipeline/InputUnit_d.cc new file mode 100644 index 000000000..ce7a0152d --- /dev/null +++ b/src/mem/ruby/network/garnet/fixed-pipeline/InputUnit_d.cc @@ -0,0 +1,90 @@ +/* + * 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/InputUnit_d.hh" +#include "mem/ruby/network/garnet/fixed-pipeline/Router_d.hh" + +InputUnit_d::InputUnit_d(int id, Router_d *router) +{ + m_id = id; + m_router = router; + m_num_vcs = m_router->get_num_vcs(); + + m_num_buffer_reads = 0; + m_num_buffer_writes = 0; + + creditQueue = new flitBuffer_d(); + // Instantiating the virtual channels + m_vcs.setSize(m_num_vcs); + for(int i=0; i < m_num_vcs; i++) + { + m_vcs[i] = new VirtualChannel_d(i); + } +} + +InputUnit_d::~InputUnit_d() +{ + delete creditQueue; + m_vcs.deletePointers(); +} + +void InputUnit_d::wakeup() +{ + flit_d *t_flit; + if(m_in_link->isReady()) + { + t_flit = m_in_link->consumeLink(); + int vc = t_flit->get_vc(); + if((t_flit->get_type() == HEAD_) || (t_flit->get_type() == HEAD_TAIL_)) + { + assert(m_vcs[vc]->get_state() == IDLE_); + m_router->route_req(t_flit, this, vc); // Do the route computation for this vc + m_vcs[vc]->set_enqueue_time(g_eventQueue_ptr->getTime()); + } + else + { + t_flit->advance_stage(SA_); + m_router->swarb_req(); + } + m_vcs[vc]->insertFlit(t_flit); // write flit into input buffer + m_num_buffer_writes++; + m_num_buffer_reads++; // same as read because any flit that is written will be read only once + } +} + + +void InputUnit_d::printConfig(ostream& out) +{ + out << endl; + out << "InputUnit Configuration" << endl; + out << "---------------------" << endl; + out << "id = " << m_id << endl; + out << "In link is " << m_in_link->get_id() << endl; +} |