2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 2000-2001 by Coleman Kane <cokane@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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
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.
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
44 #include <sys/types.h>
48 * define an ioctl here
50 #define DHIOCRESET _IO('D', 0) /* reset the voodoo device */
51 #define GETVOODOO 0x3302
52 #define SETVOODOO 0x3303
53 #define MOREVOODOO 0x3300
55 #define _IOC_TYPEBITS 8
56 #define _IOC_SIZEBITS 14
57 #define _IOC_DIRBITS 2
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)
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)
76 #define _IOCV(dir,type,nr,size) \
77 (((dir) << _IOC_DIRSHIFT) | \
78 ((type) << _IOC_TYPESHIFT) | \
79 ((nr) << _IOC_NRSHIFT) | \
80 ((size) << _IOC_SIZESHIFT))
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))
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)
94 /* ...and for the drivers/sound files... */
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)