port.cc

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#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