1 /* $NetBSD: timekeeper.c,v 1.13 2008/04/28 20:23:29 martin 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 * 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 * Attachment interface for the Time-Keeper RAMs on mvme boards. 34 * 35 * XXXSCW: Needs to be extended to allow read/write to NVRAM by 36 * userland application. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: timekeeper.c,v 1.13 2008/04/28 20:23:29 martin Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/conf.h> 46 47 #include <machine/cpu.h> 48 #include <machine/bus.h> 49 50 #include <dev/mvme/clockvar.h> 51 52 #include <dev/ic/mk48txxreg.h> 53 #include <dev/ic/mk48txxvar.h> 54 55 #include <mvme68k/dev/mainbus.h> 56 57 #include "ioconf.h" 58 59 int timekeeper_match(device_t, cfdata_t, void *); 60 void timekeeper_attach(device_t, device_t, void *); 61 62 CFATTACH_DECL_NEW(timekeeper, sizeof(struct mk48txx_softc), 63 timekeeper_match, timekeeper_attach, NULL, NULL); 64 65 int 66 timekeeper_match(device_t parent, cfdata_t cf, void *aux) 67 { 68 struct mainbus_attach_args *ma = aux; 69 70 if (strcmp(ma->ma_name, timekeeper_cd.cd_name)) 71 return (0); 72 73 return (1); 74 } 75 76 void 77 timekeeper_attach(device_t parent, device_t self, void *aux) 78 { 79 struct mk48txx_softc *sc = device_private(self); 80 struct mainbus_attach_args *ma = aux; 81 bus_size_t size; 82 83 sc->sc_dev = self; 84 sc->sc_bst = ma->ma_bust; 85 86 if (machineid == MVME_147) { 87 size = MK48T02_CLKSZ; 88 sc->sc_model = "mk48t02"; 89 } else { 90 size = MK48T08_CLKSZ; 91 sc->sc_model = "mk48t08"; 92 } 93 94 bus_space_map(sc->sc_bst, ma->ma_offset, size, 0, &sc->sc_bsh); 95 96 sc->sc_year0 = YEAR0; 97 mk48txx_attach(sc); 98 99 aprint_normal(" Time-Keeper RAM\n"); 100 aprint_normal_dev(self, "%ld bytes NVRAM plus Realtime Clock\n", 101 sc->sc_nvramsz); 102 } 103