Index: kernel/generic/include/ipc/ipc.h
===================================================================
--- kernel/generic/include/ipc/ipc.h	(revision 6c383b0276be208b47b6cf306a8fcdbe62d15436)
+++ kernel/generic/include/ipc/ipc.h	(revision e0bc7fccf48d7dd22900a4d0cf37421c390e5f62)
@@ -38,5 +38,5 @@
 /* Length of data being transfered with IPC call */
 /* - the uspace may not be able to utilize full length */
-#define IPC_CALL_LEN		4
+#define IPC_CALL_LEN		6	
 
 /** Maximum active async calls per thread */
@@ -83,4 +83,6 @@
 #define IPC_SET_ARG2(data, val)		((data).args[2] = (val))
 #define IPC_SET_ARG3(data, val)		((data).args[3] = (val))
+#define IPC_SET_ARG4(data, val)		((data).args[4] = (val))
+#define IPC_SET_ARG5(data, val)		((data).args[5] = (val))
 
 #define IPC_GET_METHOD(data)		((data).args[0])
@@ -90,4 +92,6 @@
 #define IPC_GET_ARG2(data)		((data).args[2])
 #define IPC_GET_ARG3(data)		((data).args[3])
+#define IPC_GET_ARG4(data)		((data).args[4])
+#define IPC_GET_ARG5(data)		((data).args[5])
 
 /* Well known phone descriptors */