NetBSD/sys/compat/linux/arch/alpha/linux_ioctl.h

93 lines
3.9 KiB
C

/* $NetBSD: linux_ioctl.h,v 1.1 1998/09/30 21:36:25 erh Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Eric Haszlakiewicz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _ALPHA_LINUX_IOCTL_H
#define _ALPHA_LINUX_IOCTL_H
/* Note: Linux looks to have tried to switch to a structured way of defining
* ioctls. Doesn't look like they finished. Some ioctls use these
* defines. Other are still just a number. (But they could
* probably be encoded as _LINUX_IO('T', #) )
*/
#define _LINUX_IOC_NRBITS 8
#define _LINUX_IOC_TYPEBITS 8
#define _LINUX_IOC_SIZEBITS 13
#define _LINUX_IOC_DIRBITS 3
#define _LINUX_IOC_NRMASK ((1 << _LINUX_IOC_NRBITS) - 1)
#define _LINUX_IOC_TYPEMASK ((1 << _LINUX_IOC_TYPEBITS) - 1)
#define _LINUX_IOC_SIZEMAEK ((1 << _LINUX_IOC_SIZEBITS) - 1)
#define _LINUX_IOC_DIRMASK ((1 << _LINUX_IOC_DIRBITS) - 1)
#define _LINUX_IOC_NRSHIFT 0
#define _LINUX_IOC_TYPESHIFT (_LINUX_IOC_NRSHIFT + _LINUX_IOC_NRBITS)
#define _LINUX_IOC_SIZESHIFT (_LINUX_IOC_TYPESHIFT + _LINUX_IOC_TYPEBITS)
#define _LINUX_IOC_DIRSHIFT (_LINUX_IOC_SIZESHIFT + _LINUX_IOC_SIZEBITS)
#define _LINUX_IOC_NONE 1U
#define _LINUX_IOC_READ 2U
#define _LINUX_IOC_WRITE 4U
#define _LINUX_IOC(dir,type,nr,size) \
((unsigned int) \
(((nr) << _LINUX_IOC_NRSHIFT) | \
((type) << _LINUX_IOC_TYPESHIFT) | \
((size) << _LINUX_IOC_SIZESHIFT) | \
((dir) << _LINUX_IOC_DIRSHIFT)))
#define _LINUX_IO(type,nr) \
_LINUX_IOC(_LINUX_IOC_NONE,(type),(nr),0)
#define _LINUX_IOR(type,nr,size) \
_LINUX_IOC(_LINUX_IOC_READ,(type),(nr),sizeof(size))
#define _LINUX_IOW(type,nr,size) \
_LINUX_IOC(_LINUX_IOC_WRITE,(type),(nr),sizeof(size))
#define _LINUX_IOWR(type,nr,size) \
_LINUX_IOC(_LINUX_IOC_READ|_LINUX_IOC_WRITE,(type),(nr),sizeof(size))
#define _LINUX_IOC_DIR(nr) \
(((nr) >> _LINUX_IOC_DIRSHIFT) & _LINUX_IOC_DIRMASK)
#define _LINUX_IOC_TYPE(nr) \
(((nr) >> _LINUX_IOC_TYPESHIFT) & _LINUX_IOC_TYPEMASK)
#define _LINUX_IOC_NR(nr) \
(((nr) >> _LINUX_IOC_NRSHIFT) & _LINUX_IOC_NRMASK)
#define _LINUX_IOC_SIZE(nr) \
(((nr) >> _LINUX_IOC_SIZESHIFT) & _LINUX_IOC_SIZEMASK)
#define LINUX_IOCGROUP(x) _LINUX_IOC_TYPE(x)
#endif /* !_ALPHA_LINUX_IOCTL_H */