mcclock_pnpbus.c revision 1.2.2.2
1 1.2.2.2 yamt /* $NetBSD: mcclock_pnpbus.c,v 1.2.2.2 2006/06/26 12:45:14 yamt Exp $ */ 2 1.2.2.2 yamt /*- 3 1.2.2.2 yamt * Copyright (c) 2006 The NetBSD Foundation, Inc. 4 1.2.2.2 yamt * All rights reserved. 5 1.2.2.2 yamt * 6 1.2.2.2 yamt * This code is derived from software contributed to The NetBSD Foundation 7 1.2.2.2 yamt * by Tim Rightnour 8 1.2.2.2 yamt * 9 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 10 1.2.2.2 yamt * modification, are permitted provided that the following conditions 11 1.2.2.2 yamt * are met: 12 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 13 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 14 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 16 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 17 1.2.2.2 yamt * 3. All advertising materials mentioning features or use of this software 18 1.2.2.2 yamt * must display the following acknowledgement: 19 1.2.2.2 yamt * This product includes software developed by the NetBSD 20 1.2.2.2 yamt * Foundation, Inc. and its contributors. 21 1.2.2.2 yamt * 4. Neither the name of The NetBSD Foundation nor the names of its 22 1.2.2.2 yamt * contributors may be used to endorse or promote products derived 23 1.2.2.2 yamt * from this software without specific prior written permission. 24 1.2.2.2 yamt * 25 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 1.2.2.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.2.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.2.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 1.2.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.2.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.2.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.2.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.2.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.2.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.2.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 36 1.2.2.2 yamt */ 37 1.2.2.2 yamt 38 1.2.2.2 yamt /* 39 1.2.2.2 yamt * PNPBus driver for the mc146818 compatible time-of-day clock found on all 40 1.2.2.2 yamt * IBM Prep machines. This one is only discernable from the motorola clock 41 1.2.2.2 yamt * part by the interface portion of the residual data. (or by the small vendor 42 1.2.2.2 yamt * item chip id) 43 1.2.2.2 yamt * NOTE: The IBM machines actually have either a dallas 1385 or a dallas 1585 44 1.2.2.2 yamt * chip. This driver should probably be replaced by something that does that 45 1.2.2.2 yamt * one day. 46 1.2.2.2 yamt */ 47 1.2.2.2 yamt 48 1.2.2.2 yamt #include <sys/cdefs.h> 49 1.2.2.2 yamt __KERNEL_RCSID(0, "$NetBSD: mcclock_pnpbus.c,v 1.2.2.2 2006/06/26 12:45:14 yamt Exp $"); 50 1.2.2.2 yamt 51 1.2.2.2 yamt #include <sys/types.h> 52 1.2.2.2 yamt #include <sys/param.h> 53 1.2.2.2 yamt #include <sys/systm.h> 54 1.2.2.2 yamt #include <sys/device.h> 55 1.2.2.2 yamt #include <sys/malloc.h> 56 1.2.2.2 yamt 57 1.2.2.2 yamt #include <machine/bus.h> 58 1.2.2.2 yamt #include <machine/intr.h> 59 1.2.2.2 yamt #include <machine/isa_machdep.h> 60 1.2.2.2 yamt #include <machine/residual.h> 61 1.2.2.2 yamt #include <machine/chpidpnp.h> 62 1.2.2.2 yamt 63 1.2.2.2 yamt #include <dev/clock_subr.h> 64 1.2.2.2 yamt #include <dev/ic/mc146818reg.h> 65 1.2.2.2 yamt #include <dev/ic/mc146818var.h> 66 1.2.2.2 yamt 67 1.2.2.2 yamt #include <dev/isa/isavar.h> 68 1.2.2.2 yamt 69 1.2.2.2 yamt #include <prep/pnpbus/pnpbusvar.h> 70 1.2.2.2 yamt 71 1.2.2.2 yamt static int mcclock_pnpbus_probe(struct device *, struct cfdata *, void *); 72 1.2.2.2 yamt static void mcclock_pnpbus_attach(struct device *, struct device *, void *); 73 1.2.2.2 yamt 74 1.2.2.2 yamt CFATTACH_DECL(mcclock_pnpbus, sizeof (struct mc146818_softc), 75 1.2.2.2 yamt mcclock_pnpbus_probe, mcclock_pnpbus_attach, NULL, NULL); 76 1.2.2.2 yamt 77 1.2.2.2 yamt void mcclock_pnpbus_write(struct mc146818_softc *, u_int, u_int); 78 1.2.2.2 yamt u_int mcclock_pnpbus_read(struct mc146818_softc *, u_int); 79 1.2.2.2 yamt 80 1.2.2.2 yamt static int 81 1.2.2.2 yamt mcclock_pnpbus_probe(struct device *parent, struct cfdata *match, void *aux) 82 1.2.2.2 yamt { 83 1.2.2.2 yamt struct pnpbus_dev_attach_args *pna = aux; 84 1.2.2.2 yamt int ret = 0; 85 1.2.2.2 yamt 86 1.2.2.2 yamt if (strcmp(pna->pna_devid, "PNP0B00") == 0 && 87 1.2.2.2 yamt pna->subtype == RealTimeClock && pna->chipid == DallasRTC) 88 1.2.2.2 yamt ret = 1; 89 1.2.2.2 yamt if (strcmp(pna->pna_devid, "PNP0B00") == 0 && 90 1.2.2.2 yamt pna->subtype == RealTimeClock && pna->chipid == Dallas1585) 91 1.2.2.2 yamt ret = 1; 92 1.2.2.2 yamt 93 1.2.2.2 yamt if (ret) 94 1.2.2.2 yamt pnpbus_scan(pna, pna->pna_ppc_dev); 95 1.2.2.2 yamt return ret; 96 1.2.2.2 yamt } 97 1.2.2.2 yamt 98 1.2.2.2 yamt static void 99 1.2.2.2 yamt mcclock_pnpbus_attach(struct device *parent, struct device *self, void *aux) 100 1.2.2.2 yamt { 101 1.2.2.2 yamt struct mc146818_softc *sc = (void *)self; 102 1.2.2.2 yamt struct pnpbus_dev_attach_args *pna = aux; 103 1.2.2.2 yamt 104 1.2.2.2 yamt sc->sc_bst = pna->pna_iot; 105 1.2.2.2 yamt if (pnpbus_io_map(&pna->pna_res, 0, &sc->sc_bst, &sc->sc_bsh)) { 106 1.2.2.2 yamt /* XXX should we panic instead? */ 107 1.2.2.2 yamt aprint_error("%s: couldn't map clock I/O space", 108 1.2.2.2 yamt device_xname(self)); 109 1.2.2.2 yamt return; 110 1.2.2.2 yamt } 111 1.2.2.2 yamt 112 1.2.2.2 yamt sc->sc_year0 = 1900; 113 1.2.2.2 yamt sc->sc_mcread = mcclock_pnpbus_read; 114 1.2.2.2 yamt sc->sc_mcwrite = mcclock_pnpbus_write; 115 1.2.2.2 yamt sc->sc_flag = MC146818_BCD; 116 1.2.2.2 yamt mc146818_attach(sc); 117 1.2.2.2 yamt 118 1.2.2.2 yamt aprint_normal("\n"); 119 1.2.2.2 yamt 120 1.2.2.2 yamt (*sc->sc_mcwrite)(sc, MC_REGB, MC_REGB_24HR); 121 1.2.2.2 yamt todr_attach(&sc->sc_handle); 122 1.2.2.2 yamt } 123 1.2.2.2 yamt 124 1.2.2.2 yamt void 125 1.2.2.2 yamt mcclock_pnpbus_write(struct mc146818_softc *sc, u_int reg, u_int datum) 126 1.2.2.2 yamt { 127 1.2.2.2 yamt bus_space_tag_t iot; 128 1.2.2.2 yamt bus_space_handle_t ioh; 129 1.2.2.2 yamt 130 1.2.2.2 yamt iot = sc->sc_bst; 131 1.2.2.2 yamt ioh = sc->sc_bsh; 132 1.2.2.2 yamt 133 1.2.2.2 yamt bus_space_write_1(iot, ioh, 0, reg); 134 1.2.2.2 yamt bus_space_write_1(iot, ioh, 1, datum); 135 1.2.2.2 yamt } 136 1.2.2.2 yamt 137 1.2.2.2 yamt u_int 138 1.2.2.2 yamt mcclock_pnpbus_read(struct mc146818_softc *sc, u_int reg) 139 1.2.2.2 yamt { 140 1.2.2.2 yamt bus_space_tag_t iot; 141 1.2.2.2 yamt bus_space_handle_t ioh; 142 1.2.2.2 yamt u_int datum; 143 1.2.2.2 yamt 144 1.2.2.2 yamt iot = sc->sc_bst; 145 1.2.2.2 yamt ioh = sc->sc_bsh; 146 1.2.2.2 yamt 147 1.2.2.2 yamt bus_space_write_1(iot, ioh, 0, reg); 148 1.2.2.2 yamt datum = bus_space_read_1(iot, ioh, 1); 149 1.2.2.2 yamt 150 1.2.2.2 yamt return (datum); 151 1.2.2.2 yamt } 152
Indexes created Wed Oct 29 20:09:47 GMT 2025