1 /* $NetBSD: timekeeper.c,v 1.12 2008/03/29 05:47:53 tsutsui 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/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: timekeeper.c,v 1.12 2008/03/29 05:47:53 tsutsui Exp $"); 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/device.h> 52 #include <sys/conf.h> 53 54 #include <machine/cpu.h> 55 #include <machine/bus.h> 56 57 #include <dev/mvme/clockvar.h> 58 59 #include <dev/ic/mk48txxreg.h> 60 #include <dev/ic/mk48txxvar.h> 61 62 #include <mvme68k/dev/mainbus.h> 63 64 #include "ioconf.h" 65 66 int timekeeper_match(device_t, cfdata_t, void *); 67 void timekeeper_attach(device_t, device_t, void *); 68 69 CFATTACH_DECL_NEW(timekeeper, sizeof(struct mk48txx_softc), 70 timekeeper_match, timekeeper_attach, NULL, NULL); 71 72 int 73 timekeeper_match(device_t parent, cfdata_t cf, void *aux) 74 { 75 struct mainbus_attach_args *ma = aux; 76 77 if (strcmp(ma->ma_name, timekeeper_cd.cd_name)) 78 return (0); 79 80 return (1); 81 } 82 83 void 84 timekeeper_attach(device_t parent, device_t self, void *aux) 85 { 86 struct mk48txx_softc *sc = device_private(self); 87 struct mainbus_attach_args *ma = aux; 88 bus_size_t size; 89 90 sc->sc_dev = self; 91 sc->sc_bst = ma->ma_bust; 92 93 if (machineid == MVME_147) { 94 size = MK48T02_CLKSZ; 95 sc->sc_model = "mk48t02"; 96 } else { 97 size = MK48T08_CLKSZ; 98 sc->sc_model = "mk48t08"; 99 } 100 101 bus_space_map(sc->sc_bst, ma->ma_offset, size, 0, &sc->sc_bsh); 102 103 sc->sc_year0 = YEAR0; 104 mk48txx_attach(sc); 105 106 aprint_normal(" Time-Keeper RAM\n"); 107 aprint_normal_dev(self, "%ld bytes NVRAM plus Realtime Clock\n", 108 sc->sc_nvramsz); 109 } 110