1 /* $NetBSD: timekeeper.c,v 1.5 2002/10/02 05:28:14 thorpej 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 CFATTACH_DECL(timekeeper, sizeof(struct timekeeper_softc), 69 timekeeper_match, timekeeper_attach, NULL, NULL); 70 71 extern struct cfdriver timekeeper_cd; 72 73 int 74 timekeeper_match(parent, cf, aux) 75 struct device *parent; 76 struct cfdata *cf; 77 void *aux; 78 { 79 struct mainbus_attach_args *ma = aux; 80 81 if (strcmp(ma->ma_name, timekeeper_cd.cd_name)) 82 return (0); 83 84 return (1); 85 } 86 87 void 88 timekeeper_attach(parent, self, aux) 89 struct device *parent; 90 struct device *self; 91 void *aux; 92 { 93 struct timekeeper_softc *sc = (struct timekeeper_softc *)self; 94 struct mainbus_attach_args *ma = aux; 95 todr_chip_handle_t todr; 96 const char *model; 97 98 sc->sc_bust = ma->ma_bust; 99 100 if (machineid == MVME_147) { 101 sc->sc_size = MK48T02_CLKSZ; 102 model = "mk48t02"; 103 } else { 104 sc->sc_size = MK48T08_CLKSZ; 105 model = "mk48t08"; 106 } 107 108 bus_space_map(ma->ma_bust, ma->ma_offset, sc->sc_size, 0, &sc->sc_bush); 109 110 todr = mk48txx_attach(sc->sc_bust, sc->sc_bush, model, YEAR0, 111 NULL, NULL); 112 if (todr == NULL) 113 panic("\ntimekeeper_attach"); 114 115 printf(" Time-Keeper RAM\n"); 116 printf("%s: %ld bytes NVRAM plus Realtime Clock\n", 117 sc->sc_dev.dv_xname, sc->sc_size); 118 119 clock_rtc_config(todr); 120 } 121