1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/sys/io.h b/sysdeps/unix/sysv/linux/alpha/sys/io.h
new file mode 100644
index 0000000000..a88073573c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/sys/io.h
@@ -0,0 +1,59 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#ifndef	_SYS_IO_H
+
+#define	_SYS_IO_H	1
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* Get constants from kernel header files. */
+#include <asm/io.h>
+
+/* If TURN_ON is TRUE, request for permission to do direct i/o on the
+   port numbers in the range [FROM,FROM+NUM-1].  Otherwise, turn I/O
+   permission off for that range.  This call requires root privileges.
+
+   Portability note: not all Linux platforms support this call.  Most
+   platforms based on the PC I/O architecture probably will, however.
+   E.g., Linux/Alpha for Alpha PCs supports this.  */
+extern int ioperm __P ((unsigned long int __from, unsigned long int __num,
+			int __turn_on));
+
+/* Set the I/O privilege level to LEVEL.  If LEVEL>3, permission to
+   access any I/O port is granted.  This call requires root
+   privileges. */
+extern int iopl __P ((int __level));
+
+/* Return the physical address of the DENSE I/O memory or NULL if none
+   is available (e.g. on a jensen).  */
+extern unsigned long _bus_base __P ((void)) __attribute__ ((const));
+extern unsigned long bus_base __P ((void)) __attribute__ ((const));
+
+/* Return the physical address of the SPARSE I/O memory.  */
+extern unsigned long _bus_base_sparse __P ((void)) __attribute__ ((const));
+extern unsigned long bus_base_sparse __P ((void)) __attribute__ ((const));
+
+/* Return the HAE shift used by the SPARSE I/O memory.  */
+extern int _hae_shift __P ((void)) __attribute__ ((const));
+extern int hae_shift __P ((void)) __attribute__ ((const));
+
+__END_DECLS
+
+#endif /* _SYS_IO_H */