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enable.c revision 1.4.8.1 
      1  1.4.8.1     kent /*	$NetBSD: enable.c,v 1.4.8.1 2005/04/29 11:28:26 kent Exp $	*/
      2      1.2      gwr 
      3      1.2      gwr /*-
      4      1.2      gwr  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5      1.2      gwr  * All rights reserved.
      6      1.2      gwr  *
      7      1.2      gwr  * This code is derived from software contributed to The NetBSD Foundation
      8      1.2      gwr  * by Gordon W. Ross.
      9      1.2      gwr  *
     10      1.2      gwr  * Redistribution and use in source and binary forms, with or without
     11      1.2      gwr  * modification, are permitted provided that the following conditions
     12      1.2      gwr  * are met:
     13      1.2      gwr  * 1. Redistributions of source code must retain the above copyright
     14      1.2      gwr  *    notice, this list of conditions and the following disclaimer.
     15      1.2      gwr  * 2. Redistributions in binary form must reproduce the above copyright
     16      1.2      gwr  *    notice, this list of conditions and the following disclaimer in the
     17      1.2      gwr  *    documentation and/or other materials provided with the distribution.
     18      1.2      gwr  * 3. All advertising materials mentioning features or use of this software
     19      1.2      gwr  *    must display the following acknowledgement:
     20      1.2      gwr  *        This product includes software developed by the NetBSD
     21      1.2      gwr  *        Foundation, Inc. and its contributors.
     22      1.2      gwr  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23      1.2      gwr  *    contributors may be used to endorse or promote products derived
     24      1.2      gwr  *    from this software without specific prior written permission.
     25      1.2      gwr  *
     26      1.2      gwr  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27      1.2      gwr  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28      1.2      gwr  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29      1.2      gwr  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30      1.2      gwr  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31      1.2      gwr  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32      1.2      gwr  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33      1.2      gwr  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34      1.2      gwr  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35      1.2      gwr  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36      1.2      gwr  * POSSIBILITY OF SUCH DAMAGE.
     37      1.2      gwr  */
     38      1.4    lukem 
     39      1.4    lukem #include <sys/cdefs.h>
     40  1.4.8.1     kent __KERNEL_RCSID(0, "$NetBSD: enable.c,v 1.4.8.1 2005/04/29 11:28:26 kent Exp $");
     41      1.2      gwr 
     42      1.2      gwr #include <sys/param.h>
     43      1.3  thorpej #include <dev/sun/fbio.h>
     44      1.2      gwr #include <sun3/dev/fbvar.h>
     45      1.2      gwr #include <sun3/sun3/machdep.h>
     46      1.2      gwr #include <sun3/sun3x/enable.h>
     47      1.2      gwr #include <sun3/sun3x/obio.h>
     48      1.2      gwr 
     49      1.2      gwr volatile short *enable_reg;
     50      1.2      gwr 
     51  1.4.8.1     kent void
     52  1.4.8.1     kent enable_init(void)
     53      1.2      gwr {
     54      1.2      gwr 
     55      1.2      gwr 	enable_reg = (short*) obio_find_mapping(OBIO_ENABLEREG, 2);
     56      1.2      gwr }
     57      1.2      gwr 
     58      1.2      gwr 
     59      1.2      gwr /*
     60      1.2      gwr  * External interfaces to the system enable register.
     61      1.2      gwr  */
     62      1.2      gwr 
     63  1.4.8.1     kent void
     64  1.4.8.1     kent enable_fpu(int on)
     65      1.2      gwr {
     66      1.2      gwr 	int s;
     67      1.2      gwr 	short ena;
     68      1.2      gwr 
     69      1.2      gwr 	s = splhigh();
     70      1.2      gwr 	ena = *enable_reg;
     71      1.2      gwr 
     72      1.2      gwr 	if (on)
     73      1.2      gwr 		ena |= ENA_FPP;
     74      1.2      gwr 	else
     75      1.2      gwr 		ena &= ~ENA_FPP;
     76      1.2      gwr 
     77      1.2      gwr 	*enable_reg = ena;
     78      1.2      gwr 	splx(s);
     79      1.2      gwr }
     80      1.2      gwr 
     81  1.4.8.1     kent void
     82  1.4.8.1     kent enable_video(int on)
     83      1.2      gwr {
     84      1.2      gwr 	int s;
     85      1.2      gwr 	short ena;
     86      1.2      gwr 
     87      1.2      gwr 	s = splhigh();
     88      1.2      gwr 	ena = *enable_reg;
     89      1.2      gwr 
     90      1.2      gwr 	if (on)
     91      1.2      gwr 		ena |= ENA_VIDEO;
     92      1.2      gwr 	else
     93      1.2      gwr 		ena &= ~ENA_VIDEO;
     94      1.2      gwr 
     95      1.2      gwr 	*enable_reg = ena;
     96      1.2      gwr 	splx(s);
     97      1.2      gwr }
     98      1.2      gwr 
     99