diff --git a/include/asm-nios2/io.h b/include/asm-nios2/io.h
new file mode 100644
index 0000000..c2c8ffc
--- /dev/null
+++ b/include/asm-nios2/io.h
@@ -0,0 +1,36 @@
+/*
+ * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_NIOS2_IO_H_
+#define __ASM_NIOS2_IO_H_
+
+#define sync() asm volatile ("sync" : : : "memory");
+
+extern unsigned char inb (unsigned char *port);
+extern unsigned short inw (unsigned short *port);
+extern unsigned inl (unsigned port);
+extern void outb (unsigned char val, unsigned char *port);
+extern void outw (unsigned short val, unsigned short *port);
+extern void outl (unsigned val, unsigned port);
+
+#endif /* __ASM_NIOS2_IO_H_ */