mem: Add function to check if the slave can receive a timing req

This changeset adds support for tryTiming, an interface that allows a
master to check if the slave is busy or otherwise if it can accept a
timing request.

Change-Id: Idc7c2337ae9ccf5dec54f308e488660591419a63
Reviewed-on: https://gem5-review.googlesource.com/5041
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Christian Menard <christian.menard@tu-dresden.de>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/mem/port.cc b/src/mem/port.cc
index 2111fa429..756eb8bdd 100644
--- a/src/mem/port.cc
+++ b/src/mem/port.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012,2015 ARM Limited
+ * Copyright (c) 2012,2015,2017 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
@@ -184,6 +184,13 @@ MasterPort::sendTimingReq(PacketPtr pkt)
 }
 
 bool
+MasterPort::tryTiming(PacketPtr pkt) const
+{
+  assert(pkt->isRequest());
+  return _slavePort->tryTiming(pkt);
+}
+
+bool
 MasterPort::sendTimingSnoopResp(PacketPtr pkt)
 {
     assert(pkt->isResponse());