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/*
* Copyright (c) 2008 The Regents of The University of Michigan
* All rights reserved.
*
* 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
*/
#include "mem/mport.hh"
Tick
MessagePort::recvAtomic(PacketPtr pkt)
{
if (pkt->cmd == MemCmd::MessageReq) {
// We received a message.
return recvMessage(pkt);
} else if (pkt->cmd == MemCmd::MessageResp) {
return recvResponse(pkt);
} else if (pkt->wasNacked()) {
return recvNack(pkt);
} else if (pkt->isError()) {
panic("Packet is error.\n");
} else {
panic("Unexpected memory command %s.\n", pkt->cmd.toString());
}
}
void
MessagePort::sendMessageTiming(PacketPtr pkt, Tick latency)
{
schedSendTiming(pkt, curTick + latency);
}
Tick
MessagePort::sendMessageAtomic(PacketPtr pkt)
{
Tick latency = sendAtomic(pkt);
assert(pkt->isResponse());
latency += recvResponse(pkt);
return latency;
}
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