/*      $NetBSD: enable.c,v 1.9 2013/09/06 17:43:19 tsutsui 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.
*
* 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: enable.c,v 1.9 2013/09/06 17:43:19 tsutsui Exp $");

#include <sys/param.h>
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <dev/sun/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(void)
{
       vaddr_t va;

       find_prom_map(OBIO_ENABLEREG, PMAP_OBIO, 2, &va);
       enable_reg = (void *)va;
}


/*
* External interfaces to the system enable register.
*/

void
enable_fpu(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(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);
}