enable.c revision 1.4
1 1.4 lukem /* $NetBSD: enable.c,v 1.4 2003/07/15 03:36:20 lukem 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 lukem __KERNEL_RCSID(0, "$NetBSD: enable.c,v 1.4 2003/07/15 03:36:20 lukem 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 1.2 gwr void 52 1.2 gwr enable_init() 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 1.2 gwr void 64 1.2 gwr enable_fpu(on) 65 1.2 gwr int on; 66 1.2 gwr { 67 1.2 gwr int s; 68 1.2 gwr short ena; 69 1.2 gwr 70 1.2 gwr s = splhigh(); 71 1.2 gwr ena = *enable_reg; 72 1.2 gwr 73 1.2 gwr if (on) 74 1.2 gwr ena |= ENA_FPP; 75 1.2 gwr else 76 1.2 gwr ena &= ~ENA_FPP; 77 1.2 gwr 78 1.2 gwr *enable_reg = ena; 79 1.2 gwr splx(s); 80 1.2 gwr } 81 1.2 gwr 82 1.2 gwr void 83 1.2 gwr enable_video(on) 84 1.2 gwr int on; 85 1.2 gwr { 86 1.2 gwr int s; 87 1.2 gwr short ena; 88 1.2 gwr 89 1.2 gwr s = splhigh(); 90 1.2 gwr ena = *enable_reg; 91 1.2 gwr 92 1.2 gwr if (on) 93 1.2 gwr ena |= ENA_VIDEO; 94 1.2 gwr else 95 1.2 gwr ena &= ~ENA_VIDEO; 96 1.2 gwr 97 1.2 gwr *enable_reg = ena; 98 1.2 gwr splx(s); 99 1.2 gwr } 100 1.2 gwr 101
Indexes created Tue Sep 30 20:09:53 GMT 2025