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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.
*
* Authors: Gabe Black
*/
#ifndef __SYSTEMC_TLM_PORT_WRAPPER_HH__
#define __SYSTEMC_TLM_PORT_WRAPPER_HH__
#include "base/logging.hh"
#include "sim/port.hh"
#include "systemc/ext/tlm_core/2/sockets/sockets.hh"
namespace sc_gem5
{
template <unsigned int BUSWIDTH=32,
typename TYPES=tlm::tlm_base_protocol_types, int N=1,
sc_core::sc_port_policy POL=sc_core::SC_ONE_OR_MORE_BOUND>
class TlmInitiatorWrapper;
template <unsigned int BUSWIDTH=32,
typename TYPES=tlm::tlm_base_protocol_types, int N=1,
sc_core::sc_port_policy POL=sc_core::SC_ONE_OR_MORE_BOUND>
class TlmTargetWrapper;
template <unsigned int BUSWIDTH, typename TYPES, int N,
sc_core::sc_port_policy POL>
class TlmInitiatorWrapper : public ::Port
{
public:
typedef tlm::tlm_base_initiator_socket<BUSWIDTH,
tlm::tlm_fw_transport_if<TYPES>,
tlm::tlm_bw_transport_if<TYPES>, N, POL>
InitiatorSocket;
typedef typename InitiatorSocket::base_target_socket_type TargetSocket;
typedef TlmTargetWrapper<BUSWIDTH, TYPES, N, POL> TargetWrapper;
InitiatorSocket &initiator() { return _initiator; }
TlmInitiatorWrapper(
InitiatorSocket &i, const std::string &_name, PortID _id) :
Port(_name, _id), _initiator(i)
{}
void
bind(::Port &peer) override
{
auto *target = dynamic_cast<TargetWrapper *>(&peer);
fatal_if(!target, "Attempt to bind TLM initiator socket %s to "
"incompatible port %s.", name(), peer.name());
initiator().bind(target->target());
}
void
unbind() override
{
panic("TLM sockets can't be unbound.");
}
private:
InitiatorSocket &_initiator;
};
template <unsigned int BUSWIDTH, typename TYPES, int N,
sc_core::sc_port_policy POL>
class TlmTargetWrapper : public ::Port
{
public:
typedef tlm::tlm_base_target_socket<BUSWIDTH,
tlm::tlm_fw_transport_if<TYPES>,
tlm::tlm_bw_transport_if<TYPES>, N, POL>
TargetSocket;
TargetSocket &target() { return _target; }
TlmTargetWrapper(TargetSocket &t, const std::string &_name, PortID _id) :
Port(_name, _id), _target(t)
{}
void
bind(::Port &peer) override
{
// Ignore attempts to bind a target socket. The initiator will
// handle it.
}
void
unbind() override
{
panic("TLM sockets can't be unbound.");
}
private:
TargetSocket &_target;
};
} // namespace sc_gem5
#endif //__SYSTEMC_TLM_PORT_WRAPPER_HH__
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