1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2000-2001 by Coleman Kane <cokane@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by Gardner Buchanan.
18 * 4. The name of Gardner Buchanan may not be used to endorse or promote
19 *    products derived from this software without specific prior written
20 *    permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 *
33 *   $FreeBSD$
34 */
35
36/* This code originally came from <shocking@prth.pgs.com>
37 * it is basically a derivative of some sys/dhio.h file to work with the 3dfx
38 * cards
39 */
40#ifndef TDFX_IO_H
41#define TDFX_IO_H
42
43#ifndef KERNEL
44#include <sys/types.h>
45#endif
46
47/*
48 * define an ioctl here
49 */
50#define DHIOCRESET _IO('D', 0)   /* reset the voodoo device */
51#define GETVOODOO 0x3302
52#define SETVOODOO 0x3303
53#define MOREVOODOO 0x3300
54#define _IOC_NRBITS	8
55#define _IOC_TYPEBITS	8
56#define _IOC_SIZEBITS	14
57#define _IOC_DIRBITS	2
58
59#define _IOC_NRMASK	((1 << _IOC_NRBITS)-1)
60#define _IOC_TYPEMASK	((1 << _IOC_TYPEBITS)-1)
61#define _IOC_SIZEMASK	((1 << _IOC_SIZEBITS)-1)
62#define _IOC_DIRMASK	((1 << _IOC_DIRBITS)-1)
63
64#define _IOC_NRSHIFT	0
65#define _IOC_TYPESHIFT	(_IOC_NRSHIFT+_IOC_NRBITS)
66#define _IOC_SIZESHIFT	(_IOC_TYPESHIFT+_IOC_TYPEBITS)
67#define _IOC_DIRSHIFT	(_IOC_SIZESHIFT+_IOC_SIZEBITS)
68
69/*
70 * Direction bits.
71 */
72#define _IOC_NONE	0U
73#define _IOC_WRITE	1U
74#define _IOC_READ	2U
75
76#define _IOCV(dir,type,nr,size) \
77	(((dir)  << _IOC_DIRSHIFT) | \
78	 ((type) << _IOC_TYPESHIFT) | \
79	 ((nr)   << _IOC_NRSHIFT) | \
80	 ((size) << _IOC_SIZESHIFT))
81
82/* used to create numbers */
83#define _IOV(type,nr)		_IOCV(_IOC_NONE,(type),(nr),0)
84#define _IORV(type,nr,size)	_IOCV(_IOC_READ,(type),(nr),sizeof(size))
85#define _IOWV(type,nr,size)	_IOCV(_IOC_WRITE,(type),(nr),sizeof(size))
86#define _IOWRV(type,nr,size)	_IOCV(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))
87
88/* used to decode ioctl numbers.. */
89#define _IOC_DIR(nr)		(((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)
90#define _IOC_TYPE(nr)		(((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
91#define _IOC_NR(nr)		(((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
92#define _IOC_SIZE(nr)		(((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)
93
94/* ...and for the drivers/sound files... */
95
96#define IOCV_IN		(_IOC_WRITE << _IOC_DIRSHIFT)
97#define IOCV_OUT	(_IOC_READ << _IOC_DIRSHIFT)
98#define IOCV_INOUT	((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT)
99#define IOCSIZE_MASK	(_IOC_SIZEMASK << _IOC_SIZESHIFT)
100#define IOCSIZE_SHIFT	(_IOC_SIZESHIFT)
101
102#endif
103