1 /* $NetBSD: drbbc.c,v 1.19 2010/12/20 00:25:25 matt 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: drbbc.c,v 1.19 2010/12/20 00:25:25 matt Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/kernel.h> 37 #include <sys/device.h> 38 #include <sys/systm.h> 39 40 #if 0 41 #include <machine/psl.h> 42 #endif 43 #include <machine/cpu.h> 44 #include <amiga/amiga/device.h> 45 #include <amiga/amiga/custom.h> 46 #include <amiga/amiga/cia.h> 47 #include <amiga/amiga/drcustom.h> 48 #include <amiga/dev/rtc.h> 49 50 #include <dev/clock_subr.h> 51 #include <dev/ic/ds.h> 52 53 int draco_ds_read_bit(void *); 54 void draco_ds_write_bit(void *, int); 55 void draco_ds_reset(void *); 56 57 void drbbc_attach(struct device *, struct device *, void *); 58 int drbbc_match(struct device *, struct cfdata *, void *); 59 60 int dracougettod(todr_chip_handle_t, struct timeval *); 61 int dracousettod(todr_chip_handle_t, struct timeval *); 62 63 static struct todr_chip_handle dracotodr; 64 struct drbbc_softc { 65 struct device sc_dev; 66 struct ds_handle sc_dsh; 67 }; 68 69 CFATTACH_DECL(drbbc, sizeof(struct drbbc_softc), 70 drbbc_match, drbbc_attach, NULL, NULL); 71 72 struct drbbc_softc *drbbc_sc; 73 74 int 75 drbbc_match(struct device *pdp, struct cfdata *cfp, void *auxp) 76 { 77 static int drbbc_matched = 0; 78 79 /* Allow only one instance. */ 80 if (!is_draco() || !matchname(auxp, "drbbc") || drbbc_matched) 81 return (0); 82 83 drbbc_matched = 1; 84 return (1); 85 } 86 87 void 88 drbbc_attach(struct device *pdp, struct device *dp, void *auxp) 89 { 90 int i; 91 struct drbbc_softc *sc; 92 u_int8_t rombuf[8]; 93 94 sc = (struct drbbc_softc *)dp; 95 96 sc->sc_dsh.ds_read_bit = draco_ds_read_bit; 97 sc->sc_dsh.ds_write_bit = draco_ds_write_bit; 98 sc->sc_dsh.ds_reset = draco_ds_reset; 99 sc->sc_dsh.ds_hw_handle = (void *)(DRCCADDR + DRIOCTLPG*PAGE_SIZE); 100 101 sc->sc_dsh.ds_reset(sc->sc_dsh.ds_hw_handle); 102 103 ds_write_byte(&sc->sc_dsh, DS_ROM_READ); 104 for (i=0; i<8; ++i) 105 rombuf[i] = ds_read_byte(&sc->sc_dsh); 106 107 hostid = (rombuf[3] << 24) + (rombuf[2] << 16) + 108 (rombuf[1] << 8) + rombuf[7]; 109 110 printf(": ROM %02x %02x%02x%02x%02x%02x%02x %02x (DraCo sernum %ld)\n", 111 rombuf[7], rombuf[6], rombuf[5], rombuf[4], 112 rombuf[3], rombuf[2], rombuf[1], rombuf[0], 113 hostid); 114 115 drbbc_sc = sc; 116 dracotodr.cookie = sc; 117 dracotodr.todr_gettime = dracougettod; 118 dracotodr.todr_settime = dracousettod; 119 todr_attach(&dracotodr); 120 } 121 122 int 123 draco_ds_read_bit(void *p) 124 { 125 struct drioct *draco_ioctl; 126 127 draco_ioctl = p; 128 129 while (draco_ioctl->io_status & DRSTAT_CLKBUSY); 130 131 draco_ioctl->io_clockw1 = 0; 132 133 while (draco_ioctl->io_status & DRSTAT_CLKBUSY); 134 135 return (draco_ioctl->io_status & DRSTAT_CLKDAT); 136 } 137 138 void 139 draco_ds_write_bit(void *p, int b) 140 { 141 struct drioct *draco_ioctl; 142 143 draco_ioctl = p; 144 145 while (draco_ioctl->io_status & DRSTAT_CLKBUSY); 146 147 if (b) 148 draco_ioctl->io_clockw1 = 0; 149 else 150 draco_ioctl->io_clockw0 = 0; 151 } 152 153 void 154 draco_ds_reset(void *p) 155 { 156 struct drioct *draco_ioctl; 157 158 draco_ioctl = p; 159 160 draco_ioctl->io_clockrst = 0; 161 } 162 163 int 164 dracougettod(todr_chip_handle_t h, struct timeval *tvp) 165 { 166 u_int32_t clkbuf; 167 u_int32_t usecs; 168 169 drbbc_sc->sc_dsh.ds_reset(drbbc_sc->sc_dsh.ds_hw_handle); 170 171 ds_write_byte(&drbbc_sc->sc_dsh, DS_ROM_SKIP); 172 173 ds_write_byte(&drbbc_sc->sc_dsh, DS_MEM_READ_MEMORY); 174 /* address of seconds/256: */ 175 ds_write_byte(&drbbc_sc->sc_dsh, 0x02); 176 ds_write_byte(&drbbc_sc->sc_dsh, 0x02); 177 178 usecs = (ds_read_byte(&drbbc_sc->sc_dsh) * 1000000) / 256; 179 clkbuf = ds_read_byte(&drbbc_sc->sc_dsh) 180 + (ds_read_byte(&drbbc_sc->sc_dsh)<<8) 181 + (ds_read_byte(&drbbc_sc->sc_dsh)<<16) 182 + (ds_read_byte(&drbbc_sc->sc_dsh)<<24); 183 184 /* BSD time is wrt. 1.1.1970; AmigaOS time wrt. 1.1.1978 */ 185 186 clkbuf += (8*365 + 2) * 86400; 187 188 tvp->tv_sec = clkbuf; 189 tvp->tv_usec = usecs; 190 191 return (0); 192 } 193 194 int 195 dracousettod(todr_chip_handle_t h, struct timeval *tvp) 196 { 197 return (ENXIO); 198 } 199