1 /* $NetBSD: linux_ioctl.h,v 1.1 1998/09/30 21:36:25 erh Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Eric Haszlakiewicz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _ALPHA_LINUX_IOCTL_H 40 #define _ALPHA_LINUX_IOCTL_H 41 42 /* Note: Linux looks to have tried to switch to a structured way of defining 43 * ioctls. Doesn't look like they finished. Some ioctls use these 44 * defines. Other are still just a number. (But they could 45 * probably be encoded as _LINUX_IO('T', #) ) 46 */ 47 #define _LINUX_IOC_NRBITS 8 48 #define _LINUX_IOC_TYPEBITS 8 49 #define _LINUX_IOC_SIZEBITS 13 50 #define _LINUX_IOC_DIRBITS 3 51 52 #define _LINUX_IOC_NRMASK ((1 << _LINUX_IOC_NRBITS) - 1) 53 #define _LINUX_IOC_TYPEMASK ((1 << _LINUX_IOC_TYPEBITS) - 1) 54 #define _LINUX_IOC_SIZEMAEK ((1 << _LINUX_IOC_SIZEBITS) - 1) 55 #define _LINUX_IOC_DIRMASK ((1 << _LINUX_IOC_DIRBITS) - 1) 56 57 #define _LINUX_IOC_NRSHIFT 0 58 #define _LINUX_IOC_TYPESHIFT (_LINUX_IOC_NRSHIFT + _LINUX_IOC_NRBITS) 59 #define _LINUX_IOC_SIZESHIFT (_LINUX_IOC_TYPESHIFT + _LINUX_IOC_TYPEBITS) 60 #define _LINUX_IOC_DIRSHIFT (_LINUX_IOC_SIZESHIFT + _LINUX_IOC_SIZEBITS) 61 62 #define _LINUX_IOC_NONE 1U 63 #define _LINUX_IOC_READ 2U 64 #define _LINUX_IOC_WRITE 4U 65 66 #define _LINUX_IOC(dir,type,nr,size) \ 67 ((unsigned int) \ 68 (((nr) << _LINUX_IOC_NRSHIFT) | \ 69 ((type) << _LINUX_IOC_TYPESHIFT) | \ 70 ((size) << _LINUX_IOC_SIZESHIFT) | \ 71 ((dir) << _LINUX_IOC_DIRSHIFT))) 72 73 #define _LINUX_IO(type,nr) \ 74 _LINUX_IOC(_LINUX_IOC_NONE,(type),(nr),0) 75 #define _LINUX_IOR(type,nr,size) \ 76 _LINUX_IOC(_LINUX_IOC_READ,(type),(nr),sizeof(size)) 77 #define _LINUX_IOW(type,nr,size) \ 78 _LINUX_IOC(_LINUX_IOC_WRITE,(type),(nr),sizeof(size)) 79 #define _LINUX_IOWR(type,nr,size) \ 80 _LINUX_IOC(_LINUX_IOC_READ|_LINUX_IOC_WRITE,(type),(nr),sizeof(size)) 81 82 #define _LINUX_IOC_DIR(nr) \ 83 (((nr) >> _LINUX_IOC_DIRSHIFT) & _LINUX_IOC_DIRMASK) 84 #define _LINUX_IOC_TYPE(nr) \ 85 (((nr) >> _LINUX_IOC_TYPESHIFT) & _LINUX_IOC_TYPEMASK) 86 #define _LINUX_IOC_NR(nr) \ 87 (((nr) >> _LINUX_IOC_NRSHIFT) & _LINUX_IOC_NRMASK) 88 #define _LINUX_IOC_SIZE(nr) \ 89 (((nr) >> _LINUX_IOC_SIZESHIFT) & _LINUX_IOC_SIZEMASK) 90 91 #define LINUX_IOCGROUP(x) _LINUX_IOC_TYPE(x) 92 #endif /* !_ALPHA_LINUX_IOCTL_H */ 93