drbbc.c revision 1.3
1 /* $NetBSD: drbbc.c,v 1.3 1999/02/16 22:46:56 is Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 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 time_t dracogettod __P((void)); 63 #ifdef __NOTYET__ 64 int dracosettod __P((time_t)); 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 if (is_draco() && matchname(auxp, "drbbc") && (cfp->cf_unit == 0)) 87 return (1); 88 else 89 return (0); 90 } 91 92 void 93 drbbc_attach(pdp, dp, auxp) 94 struct device *pdp, *dp; 95 void *auxp; 96 { 97 int i; 98 struct drbbc_softc *sc; 99 u_int8_t rombuf[8]; 100 101 sc = (struct drbbc_softc *)dp; 102 103 sc->sc_dsh.ds_read_bit = draco_ds_read_bit; 104 sc->sc_dsh.ds_write_bit = draco_ds_write_bit; 105 sc->sc_dsh.ds_reset = draco_ds_reset; 106 sc->sc_dsh.ds_hw_handle = (void *)(DRCCADDR + DRIOCTLPG*NBPG); 107 108 sc->sc_dsh.ds_reset(sc->sc_dsh.ds_hw_handle); 109 110 ds_write_byte(&sc->sc_dsh, DS_ROM_READ); 111 for (i=0; i<8; ++i) 112 rombuf[i] = ds_read_byte(&sc->sc_dsh); 113 114 hostid = (rombuf[3] << 24) + (rombuf[2] << 16) + 115 (rombuf[1] << 8) + rombuf[7]; 116 117 printf(": ROM %02x %02x%02x%02x%02x%02x%02x %02x (DraCo sernum %ld)\n", 118 rombuf[7], rombuf[6], rombuf[5], rombuf[4], 119 rombuf[3], rombuf[2], rombuf[1], rombuf[0], 120 hostid); 121 122 gettod = dracogettod; 123 settod = (void *)0; 124 drbbc_sc = sc; 125 } 126 127 int 128 draco_ds_read_bit(p) 129 void *p; 130 { 131 struct drioct *draco_ioct; 132 133 draco_ioct = p; 134 135 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 136 137 draco_ioct->io_clockw1 = 0; 138 139 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 140 141 return (draco_ioct->io_status & DRSTAT_CLKDAT); 142 } 143 144 void 145 draco_ds_write_bit(p, b) 146 void *p; 147 int b; 148 { 149 struct drioct *draco_ioct; 150 151 draco_ioct = p; 152 153 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 154 155 if (b) 156 draco_ioct->io_clockw1 = 0; 157 else 158 draco_ioct->io_clockw0 = 0; 159 } 160 161 void 162 draco_ds_reset(p) 163 void *p; 164 { 165 struct drioct *draco_ioct; 166 167 draco_ioct = p; 168 169 draco_ioct->io_clockrst = 0; 170 } 171 172 /* 173 * We could return 1/256 of a seconds, but would need to change the interface 174 */ 175 176 time_t 177 dracogettod() 178 { 179 u_int32_t clkbuf; 180 181 drbbc_sc->sc_dsh.ds_reset(drbbc_sc->sc_dsh.ds_hw_handle); 182 183 ds_write_byte(&drbbc_sc->sc_dsh, DS_ROM_SKIP); 184 185 ds_write_byte(&drbbc_sc->sc_dsh, DS_MEM_READ_MEMORY); 186 /* address of full seconds: */ 187 ds_write_byte(&drbbc_sc->sc_dsh, 0x03); 188 ds_write_byte(&drbbc_sc->sc_dsh, 0x02); 189 190 clkbuf = ds_read_byte(&drbbc_sc->sc_dsh) 191 + (ds_read_byte(&drbbc_sc->sc_dsh)<<8) 192 + (ds_read_byte(&drbbc_sc->sc_dsh)<<16) 193 + (ds_read_byte(&drbbc_sc->sc_dsh)<<24); 194 195 /* BSD time is wr. 1.1.1970; AmigaOS time wrt. 1.1.1978 */ 196 197 clkbuf += (8*365 + 2) * 86400; 198 199 return ((time_t)clkbuf); 200 } 201
Indexes created Wed Oct 01 13:09:50 GMT 2025