1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2/*
3 *    Linux/PA-RISC Project (http://www.parisc-linux.org/)
4 *    Copyright (C) 1999,2003 Matthew Wilcox < willy at debian . org >
5 *    portions from "linux/ioctl.h for Linux" by H.H. Bergman.
6 *
7 *    This program is free software; you can redistribute it and/or modify
8 *    it under the terms of the GNU General Public License as published by
9 *    the Free Software Foundation; either version 2 of the License, or
10 *    (at your option) any later version.
11 *
12 *    This program is distributed in the hope that it will be useful,
13 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
14 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 *    GNU General Public License for more details.
16 *
17 *    You should have received a copy of the GNU General Public License
18 *    along with this program; if not, write to the Free Software
19 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20 */
21
22
23#ifndef _ASM_PARISC_IOCTL_H
24#define _ASM_PARISC_IOCTL_H
25
26/* ioctl command encoding: 32 bits total, command in lower 16 bits,
27 * size of the parameter structure in the lower 14 bits of the
28 * upper 16 bits.
29 * Encoding the size of the parameter structure in the ioctl request
30 * is useful for catching programs compiled with old versions
31 * and to avoid overwriting user space outside the user buffer area.
32 * The highest 2 bits are reserved for indicating the ``access mode''.
33 * NOTE: This limits the max parameter size to 16kB -1 !
34 */
35
36/*
37 * Direction bits.
38 */
39#define _IOC_NONE	0U
40#define _IOC_WRITE	2U
41#define _IOC_READ	1U
42
43#include <asm-generic/ioctl.h>
44
45#endif /* _ASM_PARISC_IOCTL_H */
46