Port: Add protocol-agnostic ports in the port hierarchy

This patch adds an additional level of ports in the inheritance
hierarchy, separating out the protocol-specific and protocl-agnostic
parts. All the functionality related to the binding of ports is now
confined to use BaseMaster/BaseSlavePorts, and all the
protocol-specific parts stay in the Master/SlavePort. In the future it
will be possible to add other protocol-specific implementations.

The functions used in the binding of ports, i.e. getMaster/SlavePort
now use the base classes, and the index parameter is updated to use
the PortID typedef with the symbolic InvalidPortID as the default.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/sim/tlb.hh b/src/sim/tlb.hh
index 0b89c9bd0..aadf047bf 100644
--- a/src/sim/tlb.hh
+++ b/src/sim/tlb.hh
@@ -49,7 +49,7 @@
 #include "sim/sim_object.hh"
 
 class ThreadContext;
-class MasterPort;
+class BaseMasterPort;
 
 class BaseTLB : public SimObject
 {
@@ -73,7 +73,7 @@ class BaseTLB : public SimObject
      *
      * @return A pointer to the walker master port or NULL if not present
      */
-    virtual MasterPort* getMasterPort() { return NULL; }
+    virtual BaseMasterPort* getMasterPort() { return NULL; }
 
     class Translation
     {