Index: uspace/lib/c/include/ddi.h
===================================================================
--- uspace/lib/c/include/ddi.h	(revision 3887aab2674bc95b385c58a3de8bd77eaa801993)
+++ uspace/lib/c/include/ddi.h	(revision ddfe233f65f4a86f6e6b48ef5065323f0f82c1d2)
@@ -47,4 +47,5 @@
 #include <task.h>
 
+#define DMAMEM_1MiB   ((uintptr_t) UINT64_C(0xfffffffffff00000))
 #define DMAMEM_16MiB  ((uintptr_t) UINT64_C(0xffffffffff000000))
 #define DMAMEM_4GiB   ((uintptr_t) UINT64_C(0xffffffff00000000))