74 lines
2.6 KiB
C
74 lines
2.6 KiB
C
/* $NetBSD: viewvar.h,v 1.4 1996/10/16 12:57:12 leo Exp $ */
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/*
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* Copyright (c) 1994 Christian E. Hopps
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christian E. Hopps.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* The view major device is a placeholder device. It serves
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* simply to map the semantics of a graphics dipslay to
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* the semantics of a character block device. In other
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* words the graphics system as currently built does not like to be
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* refered to by open/close/ioctl. This device serves as
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* a interface to graphics. */
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#define NOPROC ((struct proc *)-1) /* XXX */
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struct view_softc {
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struct view_size size;
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view_t *view;
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pid_t lock_process;
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int flags;
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};
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enum view_unit_flag_bits {
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VUB_OPEN,
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VUB_ADDED,
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VUB_DISPLAY,
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VUB_LAST_BIT
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};
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enum view_unit_flags {
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VUF_OPEN = 1<<VUB_OPEN,
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VUF_ADDED = 1<<VUB_ADDED,
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VUF_DISPLAY = 1<<VUB_DISPLAY,
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VUF_MASK = ((1<<VUB_LAST_BIT)-1)
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};
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#ifdef _KERNEL
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view_t *viewview __P((dev_t));
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int viewprobe __P((void));
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dev_type_close(viewclose);
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dev_type_ioctl(viewioctl);
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dev_type_open(viewopen);
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dev_type_mmap(viewmmap);
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dev_type_poll(viewpoll);
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#endif /* _KERNEL */
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