Index: kernel/generic/include/ddi/ddi.h
===================================================================
--- kernel/generic/include/ddi/ddi.h	(revision 5e801dccc49faadcb18cd8ddee6200633e8f11b8)
+++ kernel/generic/include/ddi/ddi.h	(revision 82dcd25c398bba039ee7b8cd99d314494d87fdad)
@@ -60,4 +60,7 @@
 extern void ddi_parea_register(parea_t *);
 
+extern void *pio_map(void *, size_t);
+extern void pio_unmap(void *, void *, size_t);
+
 extern sys_errno_t sys_physmem_map(uintptr_t, size_t, unsigned int, void *,
     uintptr_t);