Index: kernel/generic/include/ddi/ddi.h
===================================================================
--- kernel/generic/include/ddi/ddi.h	(revision 6f7071b562c845499c96c4a1354e9a5d3ce94a05)
+++ kernel/generic/include/ddi/ddi.h	(revision bc73be3215c832cdb0c8a5022db800902f9f62dc)
@@ -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);