1 /* $NetBSD: mcclock_jensenio.c,v 1.12 2024/03/06 06:30:49 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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) 1995, 1996 Carnegie-Mellon University. 34 * All rights reserved. 35 * 36 * Author: Chris G. Demetriou 37 * 38 * Permission to use, copy, modify and distribute this software and 39 * its documentation is hereby granted, provided that both the copyright 40 * notice and this permission notice appear in all copies of the 41 * software, derivative works or modified versions, and any portions 42 * thereof, and that both notices appear in supporting documentation. 43 * 44 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 45 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 46 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 47 * 48 * Carnegie Mellon requests users of this software to return to 49 * 50 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 51 * School of Computer Science 52 * Carnegie Mellon University 53 * Pittsburgh PA 15213-3890 54 * 55 * any improvements or extensions that they make and grant Carnegie the 56 * rights to redistribute these changes. 57 */ 58 59 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 60 61 __KERNEL_RCSID(0, "$NetBSD: mcclock_jensenio.c,v 1.12 2024/03/06 06:30:49 thorpej Exp $"); 62 63 #include <sys/param.h> 64 #include <sys/kernel.h> 65 #include <sys/systm.h> 66 #include <sys/device.h> 67 68 #include <sys/bus.h> 69 70 #include <dev/clock_subr.h> 71 72 #include <dev/ic/mc146818reg.h> 73 #include <dev/ic/mc146818var.h> 74 #include <dev/eisa/eisavar.h> 75 #include <dev/isa/isavar.h> 76 #include <alpha/jensenio/jenseniovar.h> 77 #include <alpha/alpha/mcclockvar.h> 78 79 struct mcclock_jensenio_softc { 80 struct mcclock_softc sc_mcclock; 81 82 bus_space_handle_t sc_std_rtc_ioh; 83 }; 84 85 static int mcclock_jensenio_match(device_t, cfdata_t, void *); 86 static void mcclock_jensenio_attach(device_t, device_t, void *); 87 88 CFATTACH_DECL_NEW(mcclock_jensenio, sizeof(struct mcclock_jensenio_softc), 89 mcclock_jensenio_match, mcclock_jensenio_attach, NULL, NULL); 90 91 static void mcclock_jensenio_write(struct mc146818_softc *, u_int, u_int); 92 static u_int mcclock_jensenio_read(struct mc146818_softc *, u_int); 93 94 95 static int 96 mcclock_jensenio_match(device_t parent, cfdata_t cf, void *aux) 97 { 98 struct jensenio_attach_args *ja = aux; 99 100 /* Always present. */ 101 if (strcmp(ja->ja_name, cf->cf_name) == 0) 102 return (1); 103 104 return (0); 105 } 106 107 static void 108 mcclock_jensenio_attach(device_t parent, device_t self, void *aux) 109 { 110 struct mcclock_jensenio_softc *jsc = device_private(self); 111 struct jensenio_attach_args *ja = aux; 112 struct mc146818_softc *sc = &jsc->sc_mcclock.sc_mc146818; 113 114 sc->sc_dev = self; 115 sc->sc_bst = ja->ja_iot; 116 if (bus_space_map(sc->sc_bst, ja->ja_ioaddr, 0x02, 0, 117 &sc->sc_bsh)) 118 panic("mcclock_jensenio_attach: couldn't map clock I/O space"); 119 120 /* 121 * Map the I/O space normally used by the ISA RTC (port 0x70) so 122 * as to avoid a false match at that address, as well. 123 */ 124 (void)bus_space_map(sc->sc_bst, 0x70, 0x02, 0, 125 &jsc->sc_std_rtc_ioh); 126 127 sc->sc_mcread = mcclock_jensenio_read; 128 sc->sc_mcwrite = mcclock_jensenio_write; 129 130 mcclock_attach(&jsc->sc_mcclock); 131 } 132 133 static void 134 mcclock_jensenio_write(struct mc146818_softc *sc, u_int reg, u_int datum) 135 { 136 bus_space_tag_t iot = sc->sc_bst; 137 bus_space_handle_t ioh = sc->sc_bsh; 138 139 bus_space_write_1(iot, ioh, 0, reg); 140 bus_space_write_1(iot, ioh, 1, datum); 141 } 142 143 static u_int 144 mcclock_jensenio_read(struct mc146818_softc *sc, u_int reg) 145 { 146 bus_space_tag_t iot = sc->sc_bst; 147 bus_space_handle_t ioh = sc->sc_bsh; 148 149 bus_space_write_1(iot, ioh, 0, reg); 150 return bus_space_read_1(iot, ioh, 1); 151 } 152
Indexes created Sun Oct 25 00:26:45 UTC 2026