Home | History | Annotate | Line # | Download | only in sun3x
enable.c revision 1.1.2.1 
      1 /*	$NetBSD: enable.c,v 1.1.2.1 1998/01/26 01:21:44 gwr Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Gordon W. Ross.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/param.h>
     40 #include <machine/fbio.h>
     41 #include <sun3/dev/fbvar.h>
     42 
     43 #include <sun3/sun3x/enable.h>
     44 
     45 /*
     46  * External interfaces to the system enable register.
     47  */
     48 
     49 void
     50 enable_fpu(on)
     51 	int on;
     52 {
     53 	int s;
     54 	short ena;
     55 
     56 	s = splhigh();
     57 	ena = *enable_reg;
     58 
     59 	if (on)
     60 		ena |= ENA_FPP;
     61 	else
     62 		ena &= ~ENA_FPP;
     63 
     64 	*enable_reg = ena;
     65 	splx(s);
     66 }
     67 
     68 void
     69 enable_video(on)
     70 	int on;
     71 {
     72 	int s;
     73 	short ena;
     74 
     75 	s = splhigh();
     76 	ena = *enable_reg;
     77 
     78 	if (on)
     79 		ena |= ENA_VIDEO;
     80 	else
     81 		ena &= ~ENA_VIDEO;
     82 
     83 	*enable_reg = ena;
     84 	splx(s);
     85 }
     86 
     87