1 /* $NetBSD: timekeeper.c,v 1.3 2002/02/23 17:18:54 scw Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Steve C. Woodford. 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 /* 40 * Attachment interface for the Time-Keeper RAMs on mvme boards. 41 * 42 * XXXSCW: Needs to be extended to allow read/write to NVRAM by 43 * userland application. 44 */ 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/device.h> 49 #include <sys/conf.h> 50 51 #include <machine/cpu.h> 52 #include <machine/bus.h> 53 54 #include <dev/mvme/clockvar.h> 55 56 #include <mvme68k/dev/mainbus.h> 57 58 struct timekeeper_softc { 59 struct device sc_dev; 60 bus_space_tag_t sc_bust; 61 bus_space_handle_t sc_bush; 62 bus_size_t sc_size; 63 }; 64 65 int timekeeper_match(struct device *, struct cfdata *, void *); 66 void timekeeper_attach(struct device *, struct device *, void *); 67 68 struct cfattach timekeeper_ca = { 69 sizeof(struct timekeeper_softc), timekeeper_match, timekeeper_attach 70 }; 71 72 extern struct cfdriver timekeeper_cd; 73 74 int 75 timekeeper_match(parent, cf, aux) 76 struct device *parent; 77 struct cfdata *cf; 78 void *aux; 79 { 80 struct mainbus_attach_args *ma = aux; 81 82 if (strcmp(ma->ma_name, timekeeper_cd.cd_name)) 83 return (0); 84 85 return (1); 86 } 87 88 void 89 timekeeper_attach(parent, self, aux) 90 struct device *parent; 91 struct device *self; 92 void *aux; 93 { 94 struct timekeeper_softc *sc = (struct timekeeper_softc *)self; 95 struct mainbus_attach_args *ma = aux; 96 todr_chip_handle_t todr; 97 const char *model; 98 99 sc->sc_bust = ma->ma_bust; 100 101 if (machineid == MVME_147) { 102 sc->sc_size = MK48T02_CLKSZ; 103 model = "mk48t02"; 104 } else { 105 sc->sc_size = MK48T08_CLKSZ; 106 model = "mk48t08"; 107 } 108 109 bus_space_map(ma->ma_bust, ma->ma_offset, sc->sc_size, 0, &sc->sc_bush); 110 111 todr = mk48txx_attach(sc->sc_bust, sc->sc_bush, model, YEAR0, 112 NULL, NULL); 113 if (todr == NULL) 114 panic("\ntimekeeper_attach"); 115 116 printf(" Time-Keeper RAM\n"); 117 printf("%s: %ld bytes NVRAM plus Realtime Clock\n", 118 sc->sc_dev.dv_xname, sc->sc_size); 119 120 clock_rtc_config(todr); 121 } 122