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, 1 insertions, 1 deletions

diff --git a/src/arch/arm/tlb.cc b/src/arch/arm/tlb.cc
index f9b2e6fe7..e7ac935e6 100644
--- a/src/arch/arm/tlb.cc
+++ b/src/arch/arm/tlb.cc
@@ -722,7 +722,7 @@ TLB::translateTiming(RequestPtr req, ThreadContext *tc,
     return fault;
 }
 
-MasterPort*
+BaseMasterPort*
 TLB::getMasterPort()
 {
     return &tableWalker->getMasterPort("port");