1 /* $NetBSD: enable.c,v 1.4 2003/07/15 03:36:20 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Gordon W. Ross. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: enable.c,v 1.4 2003/07/15 03:36:20 lukem Exp $"); 41 42 #include <sys/param.h> 43 #include <dev/sun/fbio.h> 44 #include <sun3/dev/fbvar.h> 45 #include <sun3/sun3/machdep.h> 46 #include <sun3/sun3x/enable.h> 47 #include <sun3/sun3x/obio.h> 48 49 volatile short *enable_reg; 50 51 void 52 enable_init() 53 { 54 55 enable_reg = (short*) obio_find_mapping(OBIO_ENABLEREG, 2); 56 } 57 58 59 /* 60 * External interfaces to the system enable register. 61 */ 62 63 void 64 enable_fpu(on) 65 int on; 66 { 67 int s; 68 short ena; 69 70 s = splhigh(); 71 ena = *enable_reg; 72 73 if (on) 74 ena |= ENA_FPP; 75 else 76 ena &= ~ENA_FPP; 77 78 *enable_reg = ena; 79 splx(s); 80 } 81 82 void 83 enable_video(on) 84 int on; 85 { 86 int s; 87 short ena; 88 89 s = splhigh(); 90 ena = *enable_reg; 91 92 if (on) 93 ena |= ENA_VIDEO; 94 else 95 ena &= ~ENA_VIDEO; 96 97 *enable_reg = ena; 98 splx(s); 99 } 100 101