/*
+ * Copyright (c) 2012 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder. You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
* Copyright (c) 2008 The Regents of The University of Michigan
* All rights reserved.
*
#include "dev/x86/intdev.hh"
void
-X86ISA::IntDev::IntPort::sendMessage(ApicList apics,
- TriggerIntMessage message, bool timing)
+X86ISA::IntDev::IntPort::sendMessage(ApicList apics, TriggerIntMessage message,
+ bool timing)
{
ApicList::iterator apicIt;
for (apicIt = apics.begin(); apicIt != apics.end(); apicIt++) {
PacketPtr pkt = buildIntRequest(*apicIt, message);
if (timing) {
- sendMessageTiming(pkt, latency);
+ schedSendTiming(pkt, curTick() + latency);
// The target handles cleaning up the packet in timing mode.
} else {
- sendMessageAtomic(pkt);
+ // ignore the latency involved in the atomic transaction
+ sendAtomic(pkt);
+ assert(pkt->isResponse());
+ // also ignore the latency in handling the response
+ recvResponse(pkt);
delete pkt->req;
delete pkt;
}
/*
+ * Copyright (c) 2012 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder. You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
* Copyright (c) 2008 The Regents of The University of Michigan
* All rights reserved.
*
MessagePort::recvAtomic(PacketPtr pkt)
{
if (pkt->cmd == MemCmd::MessageReq) {
- // We received a message.
return recvMessage(pkt);
} else if (pkt->cmd == MemCmd::MessageResp) {
+ // normally we would never see responses in recvAtomic, but
+ // since the timing port uses recvAtomic to implement
+ // recvTiming we have to deal with both cases
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());
+ panic("%s received unexpected atomic command %s from %s.\n",
+ name(), pkt->cmd.toString(), getPeer()->name());
}
}
-
-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;
-}
Tick recvAtomic(PacketPtr pkt);
+ protected:
+
virtual Tick recvMessage(PacketPtr pkt) = 0;
// Accept and ignore responses.
{
return 0;
}
-
- // Since by default we're assuming everything we send is accepted, panic.
- virtual Tick recvNack(PacketPtr pkt)
- {
- panic("Unhandled message nack.\n");
- }
-
- void sendMessageTiming(PacketPtr pkt, Tick latency);
- Tick sendMessageAtomic(PacketPtr pkt);
};
#endif