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/*
* Copyright 2018 Google, Inc.
*
* 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 "systemc/core/port.hh"
#include "base/logging.hh"
#include "systemc/core/process.hh"
#include "systemc/core/sensitivity.hh"
#include "systemc/ext/channel/messages.hh"
#include "systemc/ext/channel/sc_signal_in_if.hh"
namespace sc_gem5
{
void
Port::finalizePort(StaticSensitivityPort *port)
{
for (int i = 0; i < size(); i++)
port->addEvent(&getInterface(i)->default_event());
}
void
Port::finalizeFinder(StaticSensitivityFinder *finder)
{
for (int i = 0; i < size(); i++)
finder->addEvent(&finder->find(getInterface(i)));
}
void
Port::finalizeReset(Reset *reset)
{
assert(size() <= 1);
if (size()) {
auto iface =
dynamic_cast<sc_core::sc_signal_in_if<bool> *>(getInterface(0));
assert(iface);
if (!reset->install(iface))
delete reset;
}
}
void
Port::sensitive(StaticSensitivityPort *port)
{
if (finalized)
finalizePort(port);
else
sensitivities.push_back(new Sensitivity(port));
}
void
Port::sensitive(StaticSensitivityFinder *finder)
{
if (finalized)
finalizeFinder(finder);
else
sensitivities.push_back(new Sensitivity(finder));
}
void
Port::addReset(Reset *reset)
{
if (finalized)
finalizeReset(reset);
else
resets.push_back(reset);
}
void
Port::finalize()
{
if (finalized)
return;
finalized = true;
for (auto &b: bindings) {
if (b->interface) {
addInterface(b->interface);
} else {
b->port->_gem5Port->finalize();
addInterfaces(b->port);
}
delete b;
}
bindings.clear();
for (auto &s: sensitivities) {
if (s->port)
finalizePort(s->port);
else
finalizeFinder(s->finder);
delete s;
}
sensitivities.clear();
for (auto &r: resets)
finalizeReset(r);
resets.clear();
if (size() > maxSize()) {
std::ostringstream ss;
ss << size() << " binds exceeds maximum of " << maxSize() <<
" allowed";
portBase->report_error(sc_core::SC_ID_COMPLETE_BINDING_,
ss.str().c_str());
}
switch (portBase->_portPolicy()) {
case sc_core::SC_ONE_OR_MORE_BOUND:
if (size() == 0)
portBase->report_error(sc_core::SC_ID_COMPLETE_BINDING_,
"port not bound");
break;
case sc_core::SC_ALL_BOUND:
if (size() < maxSize() || size() < 1) {
std::stringstream ss;
ss << size() << " actual binds is less than required " <<
maxSize();
portBase->report_error(sc_core::SC_ID_COMPLETE_BINDING_,
ss.str().c_str());
}
break;
case sc_core::SC_ZERO_OR_MORE_BOUND:
break;
default:
panic("Unrecognized port policy %d.", portBase->_portPolicy());
}
}
void
Port::regPort()
{
if (!regPortNeeded)
return;
for (int i = 0; i < size(); i++)
getInterface(i)->register_port(*portBase, portBase->_ifTypeName());
}
std::list<Port *> allPorts;
} // namespace sc_gem5