Create a message port for sending messages as apposed to reading/writing a memory range.

1 files changed, 60 insertions, 0 deletions

diff --git a/src/mem/mport.cc b/src/mem/mport.cc
new file mode 100644
index 000000000..72bcfc7fd
--- /dev/null
+++ b/src/mem/mport.cc
@@ -0,0 +1,60 @@
+/*
+ * 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)
+{
+    return sendAtomic(pkt);
+}