sys/dev/wscons/wsdisplay_vcons_util.c

   1 /*      $NetBSD: wsdisplay_vconsvar.h,v 1.9 2008/04/28 20:24:01 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2005, 2006 Michael Lorenz
   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  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /* some utility functions for use with vcons */
  30 #include <sys/param.h>
  31 #include <sys/stdint.h>
  32 #include <sys/systm.h>
  33 #include <sys/buf.h>
  34 #include <sys/device.h>
  35 #include <sys/msgbuf.h>
  36 #include <dev/cons.h>
  37
  38 #include <dev/wscons/wsdisplayvar.h>
  39 #include <dev/wscons/wsconsio.h>
  40 #include <dev/wsfont/wsfont.h>
  41 #include <dev/rasops/rasops.h>
  42
  43 #include <dev/wscons/wsdisplay_vconsvar.h>
  44
  45 void
  46 vcons_replay_msgbuf(struct vcons_screen *scr)
  47 {
  48         int status = scr->scr_status;
  49         int rptr = msgbufp->msg_bufr;
  50
  51         scr->scr_status &= ~VCONS_IS_VISIBLE;
  52         while (rptr != msgbufp->msg_bufx) {
  53                 cnputc(msgbufp->msg_bufc[rptr]);
  54                 rptr++;
  55                 if (rptr >= msgbufp->msg_bufs)
  56                         rptr = 0;
  57         }
  58         scr->scr_status = status;
  59         vcons_redraw_screen(scr);
  60 }