drbbc.c revision 1.10
1 /* $NetBSD: drbbc.c,v 1.10 2002/10/02 04:55:49 thorpej 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: drbbc.c,v 1.10 2002/10/02 04:55:49 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/systm.h> 46 #if 0 47 #include <machine/psl.h> 48 #endif 49 #include <machine/cpu.h> 50 #include <amiga/amiga/device.h> 51 #include <amiga/amiga/custom.h> 52 #include <amiga/amiga/cia.h> 53 #include <amiga/amiga/drcustom.h> 54 #include <amiga/dev/rtc.h> 55 56 #include <dev/ic/ds.h> 57 58 int draco_ds_read_bit(void *); 59 void draco_ds_write_bit(void *, int); 60 void draco_ds_reset(void *); 61 62 void drbbc_attach(struct device *, struct device *, void *); 63 int drbbc_match(struct device *, struct cfdata *, void *); 64 65 int dracougettod(struct timeval *); 66 #ifdef __NOTYET__ 67 int dracousettod(struct timeval *); 68 #endif 69 70 struct drbbc_softc { 71 struct device sc_dev; 72 struct ds_handle sc_dsh; 73 }; 74 75 CFATTACH_DECL(drbbc, sizeof(struct drbbc_softc), 76 drbbc_match, drbbc_attach, NULL, NULL); 77 78 struct drbbc_softc *drbbc_sc; 79 80 int 81 drbbc_match(struct device *pdp, struct cfdata *cfp, void *auxp) 82 { 83 static int drbbc_matched = 0; 84 85 /* Allow only one instance. */ 86 if (!is_draco() || !matchname(auxp, "drbbc") || drbbc_matched) 87 return (0); 88 89 drbbc_matched = 1; 90 return (1); 91 } 92 93 void 94 drbbc_attach(struct device *pdp, struct device *dp, void *auxp) 95 { 96 int i; 97 struct drbbc_softc *sc; 98 u_int8_t rombuf[8]; 99 100 sc = (struct drbbc_softc *)dp; 101 102 sc->sc_dsh.ds_read_bit = draco_ds_read_bit; 103 sc->sc_dsh.ds_write_bit = draco_ds_write_bit; 104 sc->sc_dsh.ds_reset = draco_ds_reset; 105 sc->sc_dsh.ds_hw_handle = (void *)(DRCCADDR + DRIOCTLPG*NBPG); 106 107 sc->sc_dsh.ds_reset(sc->sc_dsh.ds_hw_handle); 108 109 ds_write_byte(&sc->sc_dsh, DS_ROM_READ); 110 for (i=0; i<8; ++i) 111 rombuf[i] = ds_read_byte(&sc->sc_dsh); 112 113 hostid = (rombuf[3] << 24) + (rombuf[2] << 16) + 114 (rombuf[1] << 8) + rombuf[7]; 115 116 printf(": ROM %02x %02x%02x%02x%02x%02x%02x %02x (DraCo sernum %ld)\n", 117 rombuf[7], rombuf[6], rombuf[5], rombuf[4], 118 rombuf[3], rombuf[2], rombuf[1], rombuf[0], 119 hostid); 120 121 ugettod = dracougettod; 122 usettod = (void *)0; 123 drbbc_sc = sc; 124 } 125 126 int 127 draco_ds_read_bit(void *p) 128 { 129 struct drioct *draco_ioct; 130 131 draco_ioct = p; 132 133 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 134 135 draco_ioct->io_clockw1 = 0; 136 137 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 138 139 return (draco_ioct->io_status & DRSTAT_CLKDAT); 140 } 141 142 void 143 draco_ds_write_bit(void *p, int b) 144 { 145 struct drioct *draco_ioct; 146 147 draco_ioct = p; 148 149 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 150 151 if (b) 152 draco_ioct->io_clockw1 = 0; 153 else 154 draco_ioct->io_clockw0 = 0; 155 } 156 157 void 158 draco_ds_reset(void *p) 159 { 160 struct drioct *draco_ioct; 161 162 draco_ioct = p; 163 164 draco_ioct->io_clockrst = 0; 165 } 166 167 int 168 dracougettod(struct timeval *tvp) 169 { 170 u_int32_t clkbuf; 171 u_int32_t usecs; 172 173 drbbc_sc->sc_dsh.ds_reset(drbbc_sc->sc_dsh.ds_hw_handle); 174 175 ds_write_byte(&drbbc_sc->sc_dsh, DS_ROM_SKIP); 176 177 ds_write_byte(&drbbc_sc->sc_dsh, DS_MEM_READ_MEMORY); 178 /* address of seconds/256: */ 179 ds_write_byte(&drbbc_sc->sc_dsh, 0x02); 180 ds_write_byte(&drbbc_sc->sc_dsh, 0x02); 181 182 usecs = (ds_read_byte(&drbbc_sc->sc_dsh) * 1000000) / 256; 183 clkbuf = ds_read_byte(&drbbc_sc->sc_dsh) 184 + (ds_read_byte(&drbbc_sc->sc_dsh)<<8) 185 + (ds_read_byte(&drbbc_sc->sc_dsh)<<16) 186 + (ds_read_byte(&drbbc_sc->sc_dsh)<<24); 187 188 /* BSD time is wr. 1.1.1970; AmigaOS time wrt. 1.1.1978 */ 189 190 clkbuf += (8*365 + 2) * 86400; 191 192 tvp->tv_sec = clkbuf; 193 tvp->tv_usec = usecs; 194 195 return (1); 196 } 197
Indexes created Tue Sep 23 02:09:52 GMT 2025