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/*
* Copyright (c) 2008 Princeton University
* Copyright (c) 2016 Georgia Institute of Technology
* 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.
*/
#include "mem/ruby/network/garnet/OutVcState.hh"
#include "mem/ruby/system/RubySystem.hh"
namespace gem5
{
namespace ruby
{
namespace garnet
{
OutVcState::OutVcState(int id, GarnetNetwork *network_ptr,
uint32_t consumerVcs)
: m_time(0)
{
m_id = id;
m_vc_state = IDLE_;
/*
* We find the virtual network using the number of
* vcs per vnet. This assumes that the same vcs per
* vnet is used throughout the given object.
*/
int vnet = floor(id/consumerVcs);
if (network_ptr->get_vnet_type(vnet) == DATA_VNET_)
m_max_credit_count = network_ptr->getBuffersPerDataVC();
else
m_max_credit_count = network_ptr->getBuffersPerCtrlVC();
m_credit_count = m_max_credit_count;
assert(m_credit_count >= 1);
}
void
OutVcState::increment_credit()
{
m_credit_count++;
assert(m_credit_count <= m_max_credit_count);
}
void
OutVcState::decrement_credit()
{
m_credit_count--;
assert(m_credit_count >= 0);
}
} // namespace garnet
} // namespace ruby
} // namespace gem5