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