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/*
* Copyright 2022 Google, LLC
*
* 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;
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* 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "mem/thread_bridge.hh"
#include "base/trace.hh"
#include "sim/eventq.hh"
namespace gem5
{
ThreadBridge::ThreadBridge(const ThreadBridgeParams &p)
: SimObject(p), in_port_("in_port", *this), out_port_("out_port", *this)
{
}
ThreadBridge::IncomingPort::IncomingPort(const std::string &name,
ThreadBridge &device)
: ResponsePort(name), device_(device)
{
}
AddrRangeList
ThreadBridge::IncomingPort::getAddrRanges() const
{
return device_.out_port_.getAddrRanges();
}
// TimingResponseProtocol
bool
ThreadBridge::IncomingPort::recvTimingReq(PacketPtr pkt)
{
panic("ThreadBridge only supports atomic/functional access.");
}
void
ThreadBridge::IncomingPort::recvRespRetry()
{
panic("ThreadBridge only supports atomic/functional access.");
}
// AtomicResponseProtocol
Tick
ThreadBridge::IncomingPort::recvAtomic(PacketPtr pkt)
{
EventQueue::ScopedMigration migrate(device_.eventQueue());
return device_.out_port_.sendAtomic(pkt);
}
// FunctionalResponseProtocol
void
ThreadBridge::IncomingPort::recvFunctional(PacketPtr pkt)
{
EventQueue::ScopedMigration migrate(device_.eventQueue());
device_.out_port_.sendFunctional(pkt);
}
ThreadBridge::OutgoingPort::OutgoingPort(const std::string &name,
ThreadBridge &device)
: RequestPort(name), device_(device)
{
}
void
ThreadBridge::OutgoingPort::recvRangeChange()
{
device_.in_port_.sendRangeChange();
}
// TimingRequestProtocol
bool
ThreadBridge::OutgoingPort::recvTimingResp(PacketPtr pkt)
{
panic("ThreadBridge only supports atomic/functional access.");
}
void
ThreadBridge::OutgoingPort::recvReqRetry()
{
panic("ThreadBridge only supports atomic/functional access.");
}
Port &
ThreadBridge::getPort(const std::string &if_name, PortID idx)
{
if (if_name == "in_port")
return in_port_;
if (if_name == "out_port")
return out_port_;
return SimObject::getPort(if_name, idx);
}
} // namespace gem5