1/*	$NetBSD: viewvar.h,v 1.9 2023/03/26 15:24:21 andvar Exp $	*/
2
3/*
4 * Copyright (c) 1994 Christian E. Hopps
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 Christian E. Hopps.
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/* The view major device is a placeholder device.  It serves
34 * simply to map the semantics of a graphics display to
35 * the semantics of a character block device.  In other
36 * words the graphics system as currently built does not like to be
37 * referred to by open/close/ioctl.  This device serves as
38 * a interface to graphics. */
39
40#define	NOLWP	((struct lwp *)-1)	/* XXX */
41
42struct view_softc {
43    struct  view_size size;
44    view_t *view;
45    pid_t   lock_process;
46    int     flags;
47};
48
49enum view_unit_flag_bits {
50    VUB_OPEN,
51    VUB_ADDED,
52    VUB_DISPLAY,
53    VUB_LAST_BIT
54};
55
56enum view_unit_flags {
57    VUF_OPEN    = 1<<VUB_OPEN,
58    VUF_ADDED   = 1<<VUB_ADDED,
59    VUF_DISPLAY = 1<<VUB_DISPLAY,
60    VUF_MASK    = ((1<<VUB_LAST_BIT)-1)
61};
62
63#ifdef _KERNEL
64view_t	*viewview(dev_t);
65int	viewprobe(void);
66
67#endif /* _KERNEL */
68