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enable.c revision 1.9 
      1  1.9  tsutsui /*	$NetBSD: enable.c,v 1.9 2013/09/06 17:43:19 tsutsui 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  *
     19  1.2      gwr  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.2      gwr  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.2      gwr  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.2      gwr  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.2      gwr  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.2      gwr  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.2      gwr  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.2      gwr  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.2      gwr  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.2      gwr  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.2      gwr  * POSSIBILITY OF SUCH DAMAGE.
     30  1.2      gwr  */
     31  1.4    lukem 
     32  1.4    lukem #include <sys/cdefs.h>
     33  1.9  tsutsui __KERNEL_RCSID(0, "$NetBSD: enable.c,v 1.9 2013/09/06 17:43:19 tsutsui Exp $");
     34  1.2      gwr 
     35  1.2      gwr #include <sys/param.h>
     36  1.7  tsutsui #include <uvm/uvm_extern.h>
     37  1.7  tsutsui #include <machine/bus.h>
     38  1.3  thorpej #include <dev/sun/fbio.h>
     39  1.2      gwr #include <sun3/dev/fbvar.h>
     40  1.2      gwr #include <sun3/sun3/machdep.h>
     41  1.2      gwr #include <sun3/sun3x/enable.h>
     42  1.2      gwr #include <sun3/sun3x/obio.h>
     43  1.2      gwr 
     44  1.2      gwr volatile short *enable_reg;
     45  1.2      gwr 
     46  1.9  tsutsui void
     47  1.5      chs enable_init(void)
     48  1.2      gwr {
     49  1.7  tsutsui 	vaddr_t va;
     50  1.2      gwr 
     51  1.7  tsutsui 	find_prom_map(OBIO_ENABLEREG, PMAP_OBIO, 2, &va);
     52  1.7  tsutsui 	enable_reg = (void *)va;
     53  1.2      gwr }
     54  1.2      gwr 
     55  1.2      gwr 
     56  1.2      gwr /*
     57  1.2      gwr  * External interfaces to the system enable register.
     58  1.2      gwr  */
     59  1.2      gwr 
     60  1.9  tsutsui void
     61  1.5      chs enable_fpu(int on)
     62  1.2      gwr {
     63  1.2      gwr 	int s;
     64  1.2      gwr 	short ena;
     65  1.2      gwr 
     66  1.2      gwr 	s = splhigh();
     67  1.2      gwr 	ena = *enable_reg;
     68  1.2      gwr 
     69  1.2      gwr 	if (on)
     70  1.2      gwr 		ena |= ENA_FPP;
     71  1.2      gwr 	else
     72  1.2      gwr 		ena &= ~ENA_FPP;
     73  1.2      gwr 
     74  1.2      gwr 	*enable_reg = ena;
     75  1.2      gwr 	splx(s);
     76  1.2      gwr }
     77  1.2      gwr 
     78  1.9  tsutsui void
     79  1.5      chs enable_video(int on)
     80  1.2      gwr {
     81  1.2      gwr 	int s;
     82  1.2      gwr 	short ena;
     83  1.2      gwr 
     84  1.2      gwr 	s = splhigh();
     85  1.2      gwr 	ena = *enable_reg;
     86  1.2      gwr 
     87  1.2      gwr 	if (on)
     88  1.2      gwr 		ena |= ENA_VIDEO;
     89  1.2      gwr 	else
     90  1.2      gwr 		ena &= ~ENA_VIDEO;
     91  1.2      gwr 
     92  1.2      gwr 	*enable_reg = ena;
     93  1.2      gwr 	splx(s);
     94  1.2      gwr }
     95  1.2      gwr 
     96