asc.c revision 1.27
1 /* $NetBSD: asc.c,v 1.27 1998/05/02 16:45:30 scottr Exp $ */ 2 3 /* 4 * Copyright (C) 1997 Scott Reynolds 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 /*- 30 * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo, 31 * Michael L. Finch, Bradley A. Grantham, and 32 * Lawrence A. Kesteloot 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by the Alice Group. 46 * 4. The names of the Alice Group or any of its members may not be used 47 * to endorse or promote products derived from this software without 48 * specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * ASC driver code and console bell support 64 */ 65 66 #include <sys/types.h> 67 #include <sys/cdefs.h> 68 #include <sys/errno.h> 69 #include <sys/time.h> 70 #include <sys/systm.h> 71 #include <sys/param.h> 72 #include <sys/device.h> 73 #include <sys/poll.h> 74 75 #include <vm/vm.h> 76 #include <vm/pmap.h> 77 78 #include <machine/autoconf.h> 79 #include <machine/cpu.h> 80 #include <machine/bus.h> 81 82 #include <mac68k/obio/ascvar.h> 83 #include <mac68k/obio/obiovar.h> 84 85 #define MAC68K_ASC_BASE 0x50f14000 86 #define MAC68K_IIFX_ASC_BASE 0x50f10000 87 #define MAC68K_ASC_LEN 0x01000 88 89 static u_int8_t asc_wave_tab[0x800]; 90 91 static int asc_ring_bell __P((void *, int, int, int)); 92 static void asc_stop_bell __P((void *)); 93 94 static int ascmatch __P((struct device *, struct cfdata *, void *)); 95 static void ascattach __P((struct device *, struct device *, void *)); 96 97 struct cfattach asc_ca = { 98 sizeof(struct asc_softc), ascmatch, ascattach 99 }; 100 101 extern struct cfdriver asc_cd; 102 103 static int 104 ascmatch(parent, cf, aux) 105 struct device *parent; 106 struct cfdata *cf; 107 void *aux; 108 { 109 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 110 bus_addr_t addr; 111 bus_space_handle_t bsh; 112 int rval = 0; 113 114 if (oa->oa_addr != (-1)) 115 addr = (bus_addr_t)oa->oa_addr; 116 else if (current_mac_model->machineid == MACH_MACIIFX) 117 addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE; 118 else 119 addr = (bus_addr_t)MAC68K_ASC_BASE; 120 121 if (bus_space_map(oa->oa_tag, addr, MAC68K_ASC_LEN, 0, &bsh)) 122 return (0); 123 124 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0, 1)) 125 rval = 1; 126 else 127 rval = 0; 128 129 bus_space_unmap(oa->oa_tag, bsh, MAC68K_ASC_LEN); 130 131 return rval; 132 } 133 134 static void 135 ascattach(parent, self, aux) 136 struct device *parent, *self; 137 void *aux; 138 { 139 struct asc_softc *sc = (struct asc_softc *)self; 140 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 141 bus_addr_t addr; 142 int i; 143 144 sc->sc_tag = oa->oa_tag; 145 if (oa->oa_addr != (-1)) 146 addr = (bus_addr_t)oa->oa_addr; 147 else if (current_mac_model->machineid == MACH_MACIIFX) 148 addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE; 149 else 150 addr = (bus_addr_t)MAC68K_ASC_BASE; 151 if (bus_space_map(sc->sc_tag, addr, MAC68K_ASC_LEN, 0, 152 &sc->sc_handle)) { 153 printf(": can't map memory space\n"); 154 return; 155 } 156 sc->sc_open = 0; 157 sc->sc_ringing = 0; 158 159 for (i = 0; i < 256; i++) { /* up part of wave, four voices? */ 160 asc_wave_tab[i] = i / 4; 161 asc_wave_tab[i + 512] = i / 4; 162 asc_wave_tab[i + 1024] = i / 4; 163 asc_wave_tab[i + 1536] = i / 4; 164 } 165 for (i = 0; i < 256; i++) { /* down part of wave, four voices? */ 166 asc_wave_tab[i + 256] = 0x3f - (i / 4); 167 asc_wave_tab[i + 768] = 0x3f - (i / 4); 168 asc_wave_tab[i + 1280] = 0x3f - (i / 4); 169 asc_wave_tab[i + 1792] = 0x3f - (i / 4); 170 } 171 172 printf(": Apple Sound Chip"); 173 if (oa->oa_addr != (-1)) 174 printf(" at %x", oa->oa_addr); 175 printf("\n"); 176 177 mac68k_set_bell_callback(asc_ring_bell, sc); 178 } 179 180 int 181 ascopen(dev, flag, mode, p) 182 dev_t dev; 183 int flag; 184 int mode; 185 struct proc *p; 186 { 187 struct asc_softc *sc; 188 int unit; 189 190 unit = ASCUNIT(dev); 191 sc = asc_cd.cd_devs[unit]; 192 if (unit >= asc_cd.cd_ndevs) 193 return (ENXIO); 194 if (sc->sc_open) 195 return (EBUSY); 196 sc->sc_open = 1; 197 198 return (0); 199 } 200 201 int 202 ascclose(dev, flag, mode, p) 203 dev_t dev; 204 int flag; 205 int mode; 206 struct proc *p; 207 { 208 struct asc_softc *sc; 209 210 sc = asc_cd.cd_devs[ASCUNIT(dev)]; 211 sc->sc_open = 0; 212 213 return (0); 214 } 215 216 int 217 ascread(dev, uio, ioflag) 218 dev_t dev; 219 struct uio *uio; 220 int ioflag; 221 { 222 return (ENXIO); 223 } 224 225 int 226 ascwrite(dev, uio, ioflag) 227 dev_t dev; 228 struct uio *uio; 229 int ioflag; 230 { 231 return (ENXIO); 232 } 233 234 int 235 ascioctl(dev, cmd, data, flag, p) 236 dev_t dev; 237 int cmd; 238 caddr_t data; 239 int flag; 240 struct proc *p; 241 { 242 struct asc_softc *sc; 243 int error; 244 int unit = ASCUNIT(dev); 245 246 sc = asc_cd.cd_devs[unit]; 247 error = 0; 248 249 switch (cmd) { 250 default: 251 error = EINVAL; 252 break; 253 } 254 return (error); 255 } 256 257 int 258 ascpoll(dev, events, p) 259 dev_t dev; 260 int events; 261 struct proc *p; 262 { 263 return (events & (POLLOUT | POLLWRNORM)); 264 } 265 266 int 267 ascmmap(dev, off, prot) 268 dev_t dev; 269 int off; 270 int prot; 271 { 272 int unit = ASCUNIT(dev); 273 struct asc_softc *sc; 274 vm_offset_t pa; 275 276 sc = asc_cd.cd_devs[unit]; 277 if (off < MAC68K_ASC_LEN) { 278 pa = pmap_extract(pmap_kernel(), (vm_offset_t)sc->sc_handle); 279 return m68k_btop(pa + off); 280 } 281 282 return (-1); 283 } 284 285 static int 286 asc_ring_bell(arg, freq, length, volume) 287 void *arg; 288 int freq, length, volume; 289 { 290 struct asc_softc *sc = (struct asc_softc *)arg; 291 unsigned long cfreq; 292 int i; 293 294 if (!sc) 295 return (ENODEV); 296 297 if (sc->sc_ringing == 0) { 298 299 bus_space_write_multi_1(sc->sc_tag, sc->sc_handle, 300 0, 0, 0x800); 301 bus_space_write_region_1(sc->sc_tag, sc->sc_handle, 302 0, asc_wave_tab, 0x800); 303 304 /* Fix this. Need to find exact ASC sampling freq */ 305 cfreq = 65536 * freq / 466; 306 307 /* printf("beep: from %d, %02x %02x %02x %02x\n", 308 * cur_beep.freq, (cfreq >> 24) & 0xff, (cfreq >> 16) & 0xff, 309 * (cfreq >> 8) & 0xff, (cfreq) & 0xff); */ 310 for (i = 0; i < 8; i++) { 311 bus_space_write_1(sc->sc_tag, sc->sc_handle, 312 0x814 + 8 * i, (cfreq >> 24) & 0xff); 313 bus_space_write_1(sc->sc_tag, sc->sc_handle, 314 0x815 + 8 * i, (cfreq >> 16) & 0xff); 315 bus_space_write_1(sc->sc_tag, sc->sc_handle, 316 0x816 + 8 * i, (cfreq >> 8) & 0xff); 317 bus_space_write_1(sc->sc_tag, sc->sc_handle, 318 0x817 + 8 * i, (cfreq) & 0xff); 319 } /* frequency; should put cur_beep.freq in here 320 * somewhere. */ 321 322 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x807, 3); /* 44 ? */ 323 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x806, 324 255 * volume / 100); 325 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x805, 0); 326 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80f, 0); 327 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x802, 2); /* sampled */ 328 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 2); /* enable sampled */ 329 } 330 sc->sc_ringing++; 331 timeout(asc_stop_bell, sc, length); 332 333 return (0); 334 } 335 336 static void 337 asc_stop_bell(arg) 338 void *arg; 339 { 340 struct asc_softc *sc = (struct asc_softc *)arg; 341 342 if (!sc) 343 return; 344 345 if (sc->sc_ringing > 1000 || sc->sc_ringing < 0) 346 panic("bell got out of sync?"); 347 348 if (--sc->sc_ringing == 0) /* disable ASC */ 349 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 0); 350 } 351
Indexes created Mon Sep 29 18:09:42 GMT 2025