drbbc.c revision 1.6
1 /* $NetBSD: drbbc.c,v 1.6 2000/03/16 16:37:20 kleink Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Ignatios Souvatzis. 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 #include <sys/param.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 #include <sys/systm.h> 43 #if 0 44 #include <machine/psl.h> 45 #endif 46 #include <machine/cpu.h> 47 #include <amiga/amiga/device.h> 48 #include <amiga/amiga/custom.h> 49 #include <amiga/amiga/cia.h> 50 #include <amiga/amiga/drcustom.h> 51 #include <amiga/dev/rtc.h> 52 53 #include <dev/ic/ds.h> 54 55 int draco_ds_read_bit __P((void *)); 56 void draco_ds_write_bit __P((void *, int)); 57 void draco_ds_reset __P((void *)); 58 59 void drbbc_attach __P((struct device *, struct device *, void *)); 60 int drbbc_match __P((struct device *, struct cfdata *, void *)); 61 62 int dracougettod __P((struct timeval *)); 63 #ifdef __NOTYET__ 64 int dracousettod __P((struct timeval *)); 65 #endif 66 67 struct drbbc_softc { 68 struct device sc_dev; 69 struct ds_handle sc_dsh; 70 }; 71 72 struct cfattach drbbc_ca = { 73 sizeof(struct drbbc_softc), 74 drbbc_match, 75 drbbc_attach 76 }; 77 78 struct drbbc_softc *drbbc_sc; 79 80 int 81 drbbc_match(pdp, cfp, auxp) 82 struct device *pdp; 83 struct cfdata *cfp; 84 void *auxp; 85 { 86 static int drbbc_matched = 0; 87 88 /* Allow only one instance. */ 89 if (!is_draco() || !matchname(auxp, "drbbc") || drbbc_matched) 90 return (0); 91 92 drbbc_matched = 1; 93 return (1); 94 } 95 96 void 97 drbbc_attach(pdp, dp, auxp) 98 struct device *pdp, *dp; 99 void *auxp; 100 { 101 int i; 102 struct drbbc_softc *sc; 103 u_int8_t rombuf[8]; 104 105 sc = (struct drbbc_softc *)dp; 106 107 sc->sc_dsh.ds_read_bit = draco_ds_read_bit; 108 sc->sc_dsh.ds_write_bit = draco_ds_write_bit; 109 sc->sc_dsh.ds_reset = draco_ds_reset; 110 sc->sc_dsh.ds_hw_handle = (void *)(DRCCADDR + DRIOCTLPG*NBPG); 111 112 sc->sc_dsh.ds_reset(sc->sc_dsh.ds_hw_handle); 113 114 ds_write_byte(&sc->sc_dsh, DS_ROM_READ); 115 for (i=0; i<8; ++i) 116 rombuf[i] = ds_read_byte(&sc->sc_dsh); 117 118 hostid = (rombuf[3] << 24) + (rombuf[2] << 16) + 119 (rombuf[1] << 8) + rombuf[7]; 120 121 printf(": ROM %02x %02x%02x%02x%02x%02x%02x %02x (DraCo sernum %ld)\n", 122 rombuf[7], rombuf[6], rombuf[5], rombuf[4], 123 rombuf[3], rombuf[2], rombuf[1], rombuf[0], 124 hostid); 125 126 ugettod = dracougettod; 127 usettod = (void *)0; 128 drbbc_sc = sc; 129 } 130 131 int 132 draco_ds_read_bit(p) 133 void *p; 134 { 135 struct drioct *draco_ioct; 136 137 draco_ioct = p; 138 139 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 140 141 draco_ioct->io_clockw1 = 0; 142 143 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 144 145 return (draco_ioct->io_status & DRSTAT_CLKDAT); 146 } 147 148 void 149 draco_ds_write_bit(p, b) 150 void *p; 151 int b; 152 { 153 struct drioct *draco_ioct; 154 155 draco_ioct = p; 156 157 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 158 159 if (b) 160 draco_ioct->io_clockw1 = 0; 161 else 162 draco_ioct->io_clockw0 = 0; 163 } 164 165 void 166 draco_ds_reset(p) 167 void *p; 168 { 169 struct drioct *draco_ioct; 170 171 draco_ioct = p; 172 173 draco_ioct->io_clockrst = 0; 174 } 175 176 int 177 dracougettod(tvp) 178 struct timeval *tvp; 179 { 180 u_int32_t clkbuf; 181 u_int32_t usecs; 182 183 drbbc_sc->sc_dsh.ds_reset(drbbc_sc->sc_dsh.ds_hw_handle); 184 185 ds_write_byte(&drbbc_sc->sc_dsh, DS_ROM_SKIP); 186 187 ds_write_byte(&drbbc_sc->sc_dsh, DS_MEM_READ_MEMORY); 188 /* address of seconds/256: */ 189 ds_write_byte(&drbbc_sc->sc_dsh, 0x02); 190 ds_write_byte(&drbbc_sc->sc_dsh, 0x02); 191 192 usecs = (ds_read_byte(&drbbc_sc->sc_dsh) * 1000000) / 256; 193 clkbuf = ds_read_byte(&drbbc_sc->sc_dsh) 194 + (ds_read_byte(&drbbc_sc->sc_dsh)<<8) 195 + (ds_read_byte(&drbbc_sc->sc_dsh)<<16) 196 + (ds_read_byte(&drbbc_sc->sc_dsh)<<24); 197 198 /* BSD time is wr. 1.1.1970; AmigaOS time wrt. 1.1.1978 */ 199 200 clkbuf += (8*365 + 2) * 86400; 201 202 tvp->tv_sec = clkbuf; 203 tvp->tv_usec = usecs; 204 205 return (1); 206 } 207
Indexes created Wed Oct 01 13:09:50 GMT 2025