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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.
*/
#ifndef __SYSTEMC_CORE_PORT_HH__
#define __SYSTEMC_CORE_PORT_HH__
#include <list>
#include <typeinfo>
#include <vector>
#include "base/cprintf.hh"
#include "systemc/ext/core/sc_interface.hh"
#include "systemc/ext/core/sc_port.hh"
namespace sc_gem5
{
class StaticSensitivityPort;
class StaticSensitivityFinder;
class Reset;
class Port;
extern std::list<Port *> allPorts;
class Port
{
private:
::sc_core::sc_port_base *portBase;
bool finalized;
int _maxSize;
int _size;
bool regPortNeeded;
void finalizePort(StaticSensitivityPort *port);
void finalizeFinder(StaticSensitivityFinder *finder);
void finalizeReset(Reset *reset);
void
addInterface(::sc_core::sc_interface *iface)
{
portBase->_gem5AddInterface(iface);
_size++;
}
void
addInterfaces(::sc_core::sc_port_base *pb)
{
// Only the ports farthest from the interfaces call register_port.
pb->_gem5Port->regPortNeeded = false;
for (int i = 0; i < pb->size(); i++)
addInterface(pb->_gem5Interface(i));
}
::sc_core::sc_interface *
getInterface(int i)
{
return portBase->_gem5Interface(i);
}
struct Binding
{
explicit Binding(::sc_core::sc_interface *interface) :
interface(interface), port(nullptr)
{}
explicit Binding(::sc_core::sc_port_base *port) :
interface(nullptr), port(port)
{}
::sc_core::sc_interface *interface;
::sc_core::sc_port_base *port;
};
struct Sensitivity
{
Sensitivity(StaticSensitivityPort *port) :
port(port), finder(nullptr)
{}
Sensitivity(StaticSensitivityFinder *finder) :
port(nullptr), finder(finder)
{}
StaticSensitivityPort *port;
StaticSensitivityFinder *finder;
};
std::vector<Binding *> bindings;
std::vector<Sensitivity *> sensitivities;
std::vector<Reset *> resets;
public:
static Port *
fromPort(const ::sc_core::sc_port_base *pb)
{
return pb->_gem5Port;
}
::sc_core::sc_port_base *sc_port_base() { return portBase; }
Port(::sc_core::sc_port_base *port_base, int max) :
portBase(port_base), finalized(false), _maxSize(max), _size(0),
regPortNeeded(true)
{
allPorts.push_front(this);
}
~Port() { allPorts.remove(this); }
void
bind(::sc_core::sc_interface *interface)
{
if (bindings.empty())
addInterface(interface);
else
bindings.push_back(new Binding(interface));
}
void
bind(::sc_core::sc_port_base *port)
{
bindings.push_back(new Binding(port));
}
void sensitive(StaticSensitivityPort *port);
void sensitive(StaticSensitivityFinder *finder);
void addReset(Reset *reset);
void finalize();
void regPort();
int size() { return _size; }
int maxSize() { return _maxSize ? _maxSize : _size; }
};
} // namespace sc_gem5
#endif // __SYSTEMC_CORE_PORT_HH__