Ruby: Add support for functional accesses

This patch rpovides functional access support in Ruby. Currently only
the M5Port of RubyPort supports functional accesses. The support for
functional through the PioPort will be added as a separate patch.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/mem/protocol/MI_example-dir.sm b/src/mem/protocol/MI_example-dir.sm
index baffe2412..2bd3afa44 100644
--- a/src/mem/protocol/MI_example-dir.sm
+++ b/src/mem/protocol/MI_example-dir.sm
@@ -122,7 +122,11 @@ machine(Directory, "Directory protocol")
       return Directory_State_to_permission(tbe.TBEState);
     }
 
-    return Directory_State_to_permission(getDirectoryEntry(addr).DirectoryState);
+    if(directory.isPresent(addr)) {
+      return Directory_State_to_permission(getDirectoryEntry(addr).DirectoryState);
+    }
+
+    return AccessPermission:NotPresent;
   }
 
   void setAccessPermission(Address addr, State state) {
@@ -131,6 +135,10 @@ machine(Directory, "Directory protocol")
     }
   }
 
+  DataBlock getDataBlock(Address addr), return_by_ref="yes" {
+    return getDirectoryEntry(addr).DataBlk;
+  }
+
   // ** OUT_PORTS **
   out_port(forwardNetwork_out, RequestMsg, forwardFromDir);
   out_port(responseNetwork_out, ResponseMsg, responseFromDir);