Prevent double registration in device framework

The device framework code will log an error if more than one
function is registered for the same operation/access/target
combination.

Change-Id: Id5136c389250ed26d7b62ff3b71116bba54ceb89
RTC: 38760
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/805
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

1 files changed, 19 insertions, 4 deletions

diff --git a/src/usr/devicefw/associator.H b/src/usr/devicefw/associator.H
index f803926c2..7d462e537 100644
--- a/src/usr/devicefw/associator.H
+++ b/src/usr/devicefw/associator.H
@@ -66,16 +66,31 @@ namespace DeviceFW
             ~Associator();
             
                 /** Register routing interface.  See deviceRegisterRoute. */
-            void registerRoute(int64_t i_opType,
-                               int64_t i_accType,
-                               int64_t i_targetType, 
-                               deviceOp_t i_regRoute);
+            errlHndl_t registerRoute(int64_t i_opType,
+                                     int64_t i_accType,
+                                     int64_t i_targetType, 
+                                     deviceOp_t i_regRoute);
                 
                 /** Perform routing.  See deviceOp. */
             errlHndl_t performOp(OperationType i_opType,
                                  TARGETING::Target* i_target,
                                  void* io_buffer, size_t& io_buflen,
                                  int64_t i_accessType, va_list i_addr);
+
+        private:
+            /**
+             * @brief Find an associated function for the given operation
+             *
+             * @param[in] i_opType  Enumeration specifying the operation type
+             * @param[in] i_accessType  Enumeration specifying the access type
+             * @param[in] i_devType  Enumeration specifying the target type
+             *
+             * @return NULL if none found, else a function pointer
+             */
+            deviceOp_t findDeviceRoute( OperationType i_opType,
+                                        TARGETING::TYPE i_devType,
+                                        int64_t i_accessType );
+
         private:
             typedef std::vector<deviceOp_t> opVector_t;