NetBSD/sys/arch/sun3/sun3x/enable.c

98 lines
2.6 KiB
C

/* $NetBSD: enable.c,v 1.2 1998/02/05 04:57:55 gwr Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Gordon W. Ross.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <machine/fbio.h>
#include <sun3/dev/fbvar.h>
#include <sun3/sun3/machdep.h>
#include <sun3/sun3x/enable.h>
#include <sun3/sun3x/obio.h>
volatile short *enable_reg;
void
enable_init()
{
enable_reg = (short*) obio_find_mapping(OBIO_ENABLEREG, 2);
}
/*
* External interfaces to the system enable register.
*/
void
enable_fpu(on)
int on;
{
int s;
short ena;
s = splhigh();
ena = *enable_reg;
if (on)
ena |= ENA_FPP;
else
ena &= ~ENA_FPP;
*enable_reg = ena;
splx(s);
}
void
enable_video(on)
int on;
{
int s;
short ena;
s = splhigh();
ena = *enable_reg;
if (on)
ena |= ENA_VIDEO;
else
ena &= ~ENA_VIDEO;
*enable_reg = ena;
splx(s);
}