Index: abi/include/ddi/arg.h
===================================================================
--- abi/include/ddi/arg.h	(revision 9a426d1f629f275455938b21d553365bb5146fb0)
+++ abi/include/ddi/arg.h	(revision 792807f9edc6d96f0d0f3eb079d9d8b6ea0d2898)
@@ -36,4 +36,6 @@
 #define ABI_DDI_ARG_H_
 
+#define DMAMEM_FLAGS_ANONYMOUS  0x01
+
 /** Structure encapsulating arguments for SYS_PHYSMEM_MAP syscall. */
 typedef struct {
Index: abi/include/syscall.h
===================================================================
--- abi/include/syscall.h	(revision 9a426d1f629f275455938b21d553365bb5146fb0)
+++ abi/include/syscall.h	(revision 792807f9edc6d96f0d0f3eb079d9d8b6ea0d2898)
@@ -85,4 +85,6 @@
 	SYS_DEVICE_ASSIGN_DEVNO,
 	SYS_PHYSMEM_MAP,
+	SYS_DMAMEM_MAP,
+	SYS_DMAMEM_UNMAP,
 	SYS_IOSPACE_ENABLE,
 	SYS_REGISTER_IRQ,