sys/arch/atari/dev/viewvar.h

   1 /*      $NetBSD: viewvar.h,v 1.6 2005/12/11 12:16:54 christos 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 dipslay 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  * refered to by open/close/ioctl.  This device serves as
  38  * a interface to graphics. */
  39
  40 #define NOLWP   ((struct lwp *)-1)      /* XXX */
  41
  42 struct view_softc {
  43     struct  view_size size;
  44     view_t *view;
  45     pid_t   lock_process;
  46     int     flags;
  47 };
  48
  49 enum view_unit_flag_bits {
  50     VUB_OPEN,
  51     VUB_ADDED,
  52     VUB_DISPLAY,
  53     VUB_LAST_BIT
  54 };
  55
  56 enum 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
  64 view_t  *viewview(dev_t);
  65 int     viewprobe(void);
  66
  67 #endif /* _KERNEL */