1 /* $NetBSD: ds17485.c,v 1.8 2011/07/01 19:03:09 dyoung Exp $ */ 2 3 /* 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net) at Sandburst Corp. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * William Jolitz and Don Ahn. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)clock.c 7.2 (Berkeley) 5/12/91 64 */ 65 /*- 66 * Copyright (c) 1993, 1994 Charles M. Hannum. 67 * 68 * This code is derived from software contributed to Berkeley by 69 * William Jolitz and Don Ahn. 70 * 71 * Redistribution and use in source and binary forms, with or without 72 * modification, are permitted provided that the following conditions 73 * are met: 74 * 1. Redistributions of source code must retain the above copyright 75 * notice, this list of conditions and the following disclaimer. 76 * 2. Redistributions in binary form must reproduce the above copyright 77 * notice, this list of conditions and the following disclaimer in the 78 * documentation and/or other materials provided with the distribution. 79 * 3. All advertising materials mentioning features or use of this software 80 * must display the following acknowledgement: 81 * This product includes software developed by the University of 82 * California, Berkeley and its contributors. 83 * 4. Neither the name of the University nor the names of its contributors 84 * may be used to endorse or promote products derived from this software 85 * without specific prior written permission. 86 * 87 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 88 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 89 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 90 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 91 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 92 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 93 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 94 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 95 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 96 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 97 * SUCH DAMAGE. 98 * 99 * @(#)clock.c 7.2 (Berkeley) 5/12/91 100 */ 101 /* 102 * Mach Operating System 103 * Copyright (c) 1991,1990,1989 Carnegie Mellon University 104 * All Rights Reserved. 105 * 106 * Permission to use, copy, modify and distribute this software and its 107 * documentation is hereby granted, provided that both the copyright 108 * notice and this permission notice appear in all copies of the 109 * software, derivative works or modified versions, and any portions 110 * thereof, and that both notices appear in supporting documentation. 111 * 112 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 113 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 114 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 115 * 116 * Carnegie Mellon requests users of this software to return to 117 * 118 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 119 * School of Computer Science 120 * Carnegie Mellon University 121 * Pittsburgh PA 15213-3890 122 * 123 * any improvements or extensions that they make and grant Carnegie Mellon 124 * the rights to redistribute these changes. 125 */ 126 /* 127 Copyright 1988, 1989 by Intel Corporation, Santa Clara, California. 128 129 All Rights Reserved 130 131 Permission to use, copy, modify, and distribute this software and 132 its documentation for any purpose and without fee is hereby 133 granted, provided that the above copyright notice appears in all 134 copies and that both the copyright notice and this permission notice 135 appear in supporting documentation, and that the name of Intel 136 not be used in advertising or publicity pertaining to distribution 137 of the software without specific, written prior permission. 138 139 INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 140 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, 141 IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 142 CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 143 LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 144 NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 145 WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 146 */ 147 148 /* 149 * Primitive clock interrupt routines. 150 */ 151 152 #include <sys/cdefs.h> 153 __KERNEL_RCSID(0, "$NetBSD: ds17485.c,v 1.8 2011/07/01 19:03:09 dyoung Exp $"); 154 155 #include <sys/param.h> 156 #include <sys/systm.h> 157 #include <sys/kernel.h> 158 #include <sys/device.h> 159 160 #include <machine/cpu.h> 161 #include <machine/intr.h> 162 #include <sys/bus.h> 163 164 #include <dev/clock_subr.h> 165 #include <dev/ic/mc146818reg.h> 166 #include <dev/ic/mc146818var.h> 167 168 #include <arch/evbppc/pmppc/dev/mainbus.h> 169 #include <machine/pmppc.h> 170 171 static int rtc_match(device_t, cfdata_t, void *); 172 static void rtc_attach(device_t, device_t, void *); 173 174 static u_int rtc_read(struct mc146818_softc *, u_int); 175 static void rtc_write(struct mc146818_softc *, u_int, u_int); 176 177 CFATTACH_DECL_NEW(rtc, sizeof(struct mc146818_softc), 178 rtc_match, rtc_attach, NULL, NULL); 179 180 static int rtc_attached = 0; 181 int 182 rtc_match(device_t parent, cfdata_t cf, void *aux) 183 { 184 struct mainbus_attach_args *maa = aux; 185 186 return (!rtc_attached && strcmp(maa->mb_name, "rtc") == 0); 187 } 188 189 void 190 rtc_attach(device_t parent, device_t self, void *aux) 191 { 192 struct mc146818_softc *sc = device_private(self); 193 struct mainbus_attach_args *maa = aux; 194 195 sc->sc_dev = self; 196 sc->sc_bst = maa->mb_bt; 197 if (bus_space_map(sc->sc_bst, maa->mb_addr, PMPPC_RTC_SIZE, 0, 198 &sc->sc_bsh)) { 199 aprint_error(": can't map i/o space\n"); 200 return; 201 } 202 203 rtc_attached = 1; 204 rtc_write(sc, MC_REGA, MC_BASE_32_KHz | MC_RATE_1024_Hz); 205 rtc_write(sc, MC_REGB, MC_REGB_24HR); 206 207 sc->sc_mcread = rtc_read; 208 sc->sc_mcwrite = rtc_write; 209 sc->sc_flag = 0; 210 sc->sc_year0 = 1900; 211 mc146818_attach(sc); 212 213 /* aprint_normal(": Dallas Semiconductor DS17485\n"); */ 214 aprint_normal("\n"); 215 } 216 217 u_int 218 rtc_read(struct mc146818_softc *sc, u_int reg) 219 { 220 221 return (bus_space_read_1(sc->sc_bst, sc->sc_bsh, reg)); 222 } 223 224 void 225 rtc_write(struct mc146818_softc *sc, u_int reg, u_int datum) 226 { 227 228 bus_space_write_1(sc->sc_bst, sc->sc_bsh, reg, datum); 229 } 230
Indexes created Tue Sep 23 01:09:51 GMT 2025