diff --git a/include/asm-sparc64/mdesc.h b/include/asm-sparc64/mdesc.h
new file mode 100644
index 0000000..124eb8c
--- /dev/null
+++ b/include/asm-sparc64/mdesc.h
@@ -0,0 +1,39 @@
+#ifndef _SPARC64_MDESC_H
+#define _SPARC64_MDESC_H
+
+#include <linux/types.h>
+#include <asm/prom.h>
+
+struct mdesc_node;
+struct mdesc_arc {
+	const char		*name;
+	struct mdesc_node	*arc;
+};
+
+struct mdesc_node {
+	const char		*name;
+	u64			node;
+	unsigned int		unique_id;
+	unsigned int		num_arcs;
+	struct property		*properties;
+	struct mdesc_node	*hash_next;
+	struct mdesc_node	*allnodes_next;
+	struct mdesc_arc	arcs[0];
+};
+
+extern struct mdesc_node *md_find_node_by_name(struct mdesc_node *from,
+					       const char *name);
+#define md_for_each_node_by_name(__mn, __name) \
+	for (__mn = md_find_node_by_name(NULL, __name); __mn; \
+	     __mn = md_find_node_by_name(__mn, __name))
+
+extern struct property *md_find_property(const struct mdesc_node *mp,
+					 const char *name,
+					 int *lenp);
+extern const void *md_get_property(const struct mdesc_node *mp,
+				   const char *name,
+				   int *lenp);
+
+extern void sun4v_mdesc_init(void);
+
+#endif