1/* $NetBSD: mkclock_ap.c,v 1.8 2008/03/29 14:34:13 tsutsui Exp $ */ 2 3/*- 4 * Copyright (c) 1996 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#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: mkclock_ap.c,v 1.8 2008/03/29 14:34:13 tsutsui Exp $"); 34 35#include <sys/param.h> 36#include <sys/kernel.h> 37#include <sys/systm.h> 38#include <sys/device.h> 39 40#include <machine/cpu.h> 41#include <machine/bus.h> 42 43#include <dev/clock_subr.h> 44#include <dev/ic/mk48txxreg.h> 45#include <dev/ic/mk48txxvar.h> 46 47#include <newsmips/apbus/apbusvar.h> 48 49#define MKCLOCK_AP_STRIDE 2 50#define MKCLOCK_AP_OFFSET \ 51 ((MK48T02_CLKOFF + MK48TXX_ICSR) << MKCLOCK_AP_STRIDE) 52 53int mkclock_ap_match(device_t, cfdata_t, void *); 54void mkclock_ap_attach(device_t, device_t, void *); 55static uint8_t mkclock_ap_nvrd(struct mk48txx_softc *, int); 56static void mkclock_ap_nvwr(struct mk48txx_softc *, int, uint8_t); 57 58CFATTACH_DECL_NEW(mkclock_ap, sizeof(struct mk48txx_softc), 59 mkclock_ap_match, mkclock_ap_attach, NULL, NULL); 60 61int 62mkclock_ap_match(device_t parent, cfdata_t cf, void *aux) 63{ 64 struct apbus_attach_args *apa = aux; 65 66 if (strcmp("clock", apa->apa_name) != 0) 67 return 0; 68 69 return 1; 70} 71 72void 73mkclock_ap_attach(device_t parent, device_t self, void *aux) 74{ 75 struct mk48txx_softc *sc = device_private(self); 76 struct apbus_attach_args *apa = aux; 77 78 sc->sc_dev = self; 79 aprint_normal(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase); 80 if (bus_space_map(sc->sc_bst, apa->apa_hwbase - MKCLOCK_AP_OFFSET, 81 MK48T02_CLKSZ, 0, &sc->sc_bsh) != 0) 82 aprint_error(": can't map device space\n"); 83 84 sc->sc_model = "mk48t02"; 85 sc->sc_year0 = 1900; 86 sc->sc_nvrd = mkclock_ap_nvrd; 87 sc->sc_nvwr = mkclock_ap_nvwr; 88 89 mk48txx_attach(sc); 90 91 aprint_normal("\n"); 92} 93 94static uint8_t 95mkclock_ap_nvrd(struct mk48txx_softc *sc, int off) 96{ 97 uint8_t rv; 98 99 rv = bus_space_read_4(sc->sc_bst, sc->sc_bsh, off << MKCLOCK_AP_STRIDE); 100 return rv; 101} 102 103static void 104mkclock_ap_nvwr(struct mk48txx_softc *sc, int off, uint8_t v) 105{ 106 107 bus_space_write_4(sc->sc_bst, sc->sc_bsh, off << MKCLOCK_AP_STRIDE, v); 108} 109