Home | History | Annotate | Line # | Download | only in sun3x
enable.c revision 1.5.8.1 
      1  1.5.8.1     yamt /*	$NetBSD: enable.c,v 1.5.8.1 2006/12/30 20:47:13 yamt 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  1.5.8.1     yamt __KERNEL_RCSID(0, "$NetBSD: enable.c,v 1.5.8.1 2006/12/30 20:47:13 yamt Exp $");
     41      1.2      gwr 
     42      1.2      gwr #include <sys/param.h>
     43  1.5.8.1     yamt #include <uvm/uvm_extern.h>
     44  1.5.8.1     yamt #include <machine/bus.h>
     45      1.3  thorpej #include <dev/sun/fbio.h>
     46      1.2      gwr #include <sun3/dev/fbvar.h>
     47      1.2      gwr #include <sun3/sun3/machdep.h>
     48      1.2      gwr #include <sun3/sun3x/enable.h>
     49      1.2      gwr #include <sun3/sun3x/obio.h>
     50      1.2      gwr 
     51      1.2      gwr volatile short *enable_reg;
     52      1.2      gwr 
     53      1.5      chs void
     54      1.5      chs enable_init(void)
     55      1.2      gwr {
     56  1.5.8.1     yamt 	vaddr_t va;
     57      1.2      gwr 
     58  1.5.8.1     yamt 	find_prom_map(OBIO_ENABLEREG, PMAP_OBIO, 2, &va);
     59  1.5.8.1     yamt 	enable_reg = (void *)va;
     60      1.2      gwr }
     61      1.2      gwr 
     62      1.2      gwr 
     63      1.2      gwr /*
     64      1.2      gwr  * External interfaces to the system enable register.
     65      1.2      gwr  */
     66      1.2      gwr 
     67      1.5      chs void
     68      1.5      chs enable_fpu(int on)
     69      1.2      gwr {
     70      1.2      gwr 	int s;
     71      1.2      gwr 	short ena;
     72      1.2      gwr 
     73      1.2      gwr 	s = splhigh();
     74      1.2      gwr 	ena = *enable_reg;
     75      1.2      gwr 
     76      1.2      gwr 	if (on)
     77      1.2      gwr 		ena |= ENA_FPP;
     78      1.2      gwr 	else
     79      1.2      gwr 		ena &= ~ENA_FPP;
     80      1.2      gwr 
     81      1.2      gwr 	*enable_reg = ena;
     82      1.2      gwr 	splx(s);
     83      1.2      gwr }
     84      1.2      gwr 
     85      1.5      chs void
     86      1.5      chs enable_video(int on)
     87      1.2      gwr {
     88      1.2      gwr 	int s;
     89      1.2      gwr 	short ena;
     90      1.2      gwr 
     91      1.2      gwr 	s = splhigh();
     92      1.2      gwr 	ena = *enable_reg;
     93      1.2      gwr 
     94      1.2      gwr 	if (on)
     95      1.2      gwr 		ena |= ENA_VIDEO;
     96      1.2      gwr 	else
     97      1.2      gwr 		ena &= ~ENA_VIDEO;
     98      1.2      gwr 
     99      1.2      gwr 	*enable_reg = ena;
    100      1.2      gwr 	splx(s);
    101      1.2      gwr }
    102      1.2      gwr 
    103