mcclock_pnpbus.c revision 1.2.2.3
1 1.2.2.3 yamt /* $NetBSD: mcclock_pnpbus.c,v 1.2.2.3 2006/08/11 15:42:41 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 1.2.2.3 yamt __KERNEL_RCSID(0, "$NetBSD: mcclock_pnpbus.c,v 1.2.2.3 2006/08/11 15:42:41 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 1.2.2.3 yamt /* XXX */ 63 1.2.2.3 yamt #include <machine/pio.h> 64 1.2.2.2 yamt 65 1.2.2.2 yamt #include <dev/clock_subr.h> 66 1.2.2.2 yamt #include <dev/ic/mc146818reg.h> 67 1.2.2.2 yamt #include <dev/ic/mc146818var.h> 68 1.2.2.3 yamt #include <dev/ic/ds1687reg.h> 69 1.2.2.2 yamt 70 1.2.2.2 yamt #include <dev/isa/isavar.h> 71 1.2.2.2 yamt 72 1.2.2.2 yamt #include <prep/pnpbus/pnpbusvar.h> 73 1.2.2.2 yamt 74 1.2.2.2 yamt static int mcclock_pnpbus_probe(struct device *, struct cfdata *, void *); 75 1.2.2.2 yamt static void mcclock_pnpbus_attach(struct device *, struct device *, void *); 76 1.2.2.2 yamt 77 1.2.2.3 yamt extern struct cfdriver mcclock_cd; 78 1.2.2.3 yamt 79 1.2.2.2 yamt CFATTACH_DECL(mcclock_pnpbus, sizeof (struct mc146818_softc), 80 1.2.2.2 yamt mcclock_pnpbus_probe, mcclock_pnpbus_attach, NULL, NULL); 81 1.2.2.2 yamt 82 1.2.2.2 yamt void mcclock_pnpbus_write(struct mc146818_softc *, u_int, u_int); 83 1.2.2.2 yamt u_int mcclock_pnpbus_read(struct mc146818_softc *, u_int); 84 1.2.2.3 yamt void ds1585_reboot(void); 85 1.2.2.3 yamt 86 1.2.2.3 yamt int have_ds1585 = 0; 87 1.2.2.3 yamt #define MCCLOCK_STD_DEV 0 88 1.2.2.2 yamt 89 1.2.2.2 yamt static int 90 1.2.2.2 yamt mcclock_pnpbus_probe(struct device *parent, struct cfdata *match, void *aux) 91 1.2.2.2 yamt { 92 1.2.2.2 yamt struct pnpbus_dev_attach_args *pna = aux; 93 1.2.2.2 yamt int ret = 0; 94 1.2.2.2 yamt 95 1.2.2.2 yamt if (strcmp(pna->pna_devid, "PNP0B00") == 0 && 96 1.2.2.2 yamt pna->subtype == RealTimeClock && pna->chipid == DallasRTC) 97 1.2.2.2 yamt ret = 1; 98 1.2.2.2 yamt if (strcmp(pna->pna_devid, "PNP0B00") == 0 && 99 1.2.2.2 yamt pna->subtype == RealTimeClock && pna->chipid == Dallas1585) 100 1.2.2.2 yamt ret = 1; 101 1.2.2.2 yamt 102 1.2.2.2 yamt if (ret) 103 1.2.2.2 yamt pnpbus_scan(pna, pna->pna_ppc_dev); 104 1.2.2.2 yamt return ret; 105 1.2.2.2 yamt } 106 1.2.2.2 yamt 107 1.2.2.2 yamt static void 108 1.2.2.2 yamt mcclock_pnpbus_attach(struct device *parent, struct device *self, void *aux) 109 1.2.2.2 yamt { 110 1.2.2.2 yamt struct mc146818_softc *sc = (void *)self; 111 1.2.2.2 yamt struct pnpbus_dev_attach_args *pna = aux; 112 1.2.2.2 yamt 113 1.2.2.2 yamt sc->sc_bst = pna->pna_iot; 114 1.2.2.2 yamt if (pnpbus_io_map(&pna->pna_res, 0, &sc->sc_bst, &sc->sc_bsh)) { 115 1.2.2.2 yamt /* XXX should we panic instead? */ 116 1.2.2.2 yamt aprint_error("%s: couldn't map clock I/O space", 117 1.2.2.2 yamt device_xname(self)); 118 1.2.2.2 yamt return; 119 1.2.2.2 yamt } 120 1.2.2.2 yamt 121 1.2.2.3 yamt if (pna->chipid == Dallas1585) 122 1.2.2.3 yamt have_ds1585 = 1; 123 1.2.2.2 yamt sc->sc_year0 = 1900; 124 1.2.2.2 yamt sc->sc_mcread = mcclock_pnpbus_read; 125 1.2.2.2 yamt sc->sc_mcwrite = mcclock_pnpbus_write; 126 1.2.2.2 yamt sc->sc_flag = MC146818_BCD; 127 1.2.2.2 yamt mc146818_attach(sc); 128 1.2.2.2 yamt 129 1.2.2.2 yamt aprint_normal("\n"); 130 1.2.2.2 yamt 131 1.2.2.2 yamt (*sc->sc_mcwrite)(sc, MC_REGB, MC_REGB_24HR); 132 1.2.2.2 yamt todr_attach(&sc->sc_handle); 133 1.2.2.2 yamt } 134 1.2.2.2 yamt 135 1.2.2.2 yamt void 136 1.2.2.3 yamt ds1585_reboot(void) 137 1.2.2.3 yamt { 138 1.2.2.3 yamt struct mc146818_softc *sc = mcclock_cd.cd_devs[MCCLOCK_STD_DEV]; 139 1.2.2.3 yamt int i, j; 140 1.2.2.3 yamt 141 1.2.2.3 yamt if (!have_ds1585) 142 1.2.2.3 yamt return; 143 1.2.2.3 yamt 144 1.2.2.3 yamt /* monitors b0: 05,03,01 b1: 49, WIE=1 */ 145 1.2.2.3 yamt 146 1.2.2.3 yamt (*sc->sc_mcwrite)(sc, DS1687_ASEC, 0); 147 1.2.2.3 yamt 148 1.2.2.3 yamt /* If we are nearing 59 minutes on the hour, the math is too complex 149 1.2.2.3 yamt * to compute out when to reboot, so we just wait for the clock to 150 1.2.2.3 yamt * flip back over to zero, then set the alarm time. 151 1.2.2.3 yamt */ 152 1.2.2.3 yamt i = (*sc->sc_mcread)(sc, DS1687_MIN); 153 1.2.2.3 yamt if (i == 0x58) { 154 1.2.2.3 yamt (*sc->sc_mcwrite)(sc, DS1687_AMIN, 0x59); 155 1.2.2.3 yamt (*sc->sc_mcwrite)(sc, DS1687_ASEC, 0x59); 156 1.2.2.3 yamt i = 0x59; 157 1.2.2.3 yamt } else { 158 1.2.2.3 yamt while (i == 0x59) { 159 1.2.2.3 yamt delay(100); 160 1.2.2.3 yamt i = (*sc->sc_mcread)(sc, DS1687_MIN); 161 1.2.2.3 yamt } 162 1.2.2.3 yamt i += 2; 163 1.2.2.3 yamt if ((i & 0x0f) > 8) 164 1.2.2.3 yamt i = (i & 0xf0) + 0x10; 165 1.2.2.3 yamt (*sc->sc_mcwrite)(sc, DS1687_AMIN, i); 166 1.2.2.3 yamt } 167 1.2.2.3 yamt i = (*sc->sc_mcread)(sc, DS1687_HOUR); 168 1.2.2.3 yamt (*sc->sc_mcwrite)(sc, DS1687_AHOUR, i); 169 1.2.2.3 yamt j = (*sc->sc_mcread)(sc, DS1687_DOM); /* get date */ 170 1.2.2.3 yamt i = (*sc->sc_mcread)(sc, DS1687_CONTROLA); 171 1.2.2.3 yamt i |= DS1687_BANK1; /* set DV0 on */ 172 1.2.2.3 yamt (*sc->sc_mcwrite)(sc, DS1687_CONTROLA, i); 173 1.2.2.3 yamt /* write today into wakeup */ 174 1.2.2.3 yamt (*sc->sc_mcwrite)(sc, DS1687_BANK1_ADATE, j); 175 1.2.2.3 yamt i = (*sc->sc_mcread)(sc, 0x4b); /* bank1 reg B */ 176 1.2.2.3 yamt i |= 0x82; /* WIE + ABE */ 177 1.2.2.3 yamt (*sc->sc_mcwrite)(sc, 0x4b, i); 178 1.2.2.3 yamt i = (*sc->sc_mcread)(sc, 0x4b); 179 1.2.2.3 yamt /* XXX power control bit on 7024/7025 */ 180 1.2.2.3 yamt outb(PREP_BUS_SPACE_IO + 0x856, 1); 181 1.2.2.3 yamt for (;;); 182 1.2.2.3 yamt } 183 1.2.2.3 yamt 184 1.2.2.3 yamt void 185 1.2.2.2 yamt mcclock_pnpbus_write(struct mc146818_softc *sc, u_int reg, u_int datum) 186 1.2.2.2 yamt { 187 1.2.2.2 yamt bus_space_tag_t iot; 188 1.2.2.2 yamt bus_space_handle_t ioh; 189 1.2.2.2 yamt 190 1.2.2.2 yamt iot = sc->sc_bst; 191 1.2.2.2 yamt ioh = sc->sc_bsh; 192 1.2.2.2 yamt 193 1.2.2.2 yamt bus_space_write_1(iot, ioh, 0, reg); 194 1.2.2.2 yamt bus_space_write_1(iot, ioh, 1, datum); 195 1.2.2.2 yamt } 196 1.2.2.2 yamt 197 1.2.2.2 yamt u_int 198 1.2.2.2 yamt mcclock_pnpbus_read(struct mc146818_softc *sc, u_int reg) 199 1.2.2.2 yamt { 200 1.2.2.2 yamt bus_space_tag_t iot; 201 1.2.2.2 yamt bus_space_handle_t ioh; 202 1.2.2.2 yamt u_int datum; 203 1.2.2.2 yamt 204 1.2.2.2 yamt iot = sc->sc_bst; 205 1.2.2.2 yamt ioh = sc->sc_bsh; 206 1.2.2.2 yamt 207 1.2.2.2 yamt bus_space_write_1(iot, ioh, 0, reg); 208 1.2.2.2 yamt datum = bus_space_read_1(iot, ioh, 1); 209 1.2.2.2 yamt 210 1.2.2.2 yamt return (datum); 211 1.2.2.2 yamt } 212
Indexes created Thu Oct 30 03:10:01 GMT 2025