asc.c revision 1.29
1 /* $NetBSD: asc.c,v 1.29 1998/11/19 15:38:23 mrg 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 #include <machine/viareg.h> 82 83 #include <mac68k/obio/ascvar.h> 84 #include <mac68k/obio/obiovar.h> 85 86 #define MAC68K_ASC_BASE 0x50f14000 87 #define MAC68K_IIFX_ASC_BASE 0x50f10000 88 #define MAC68K_ASC_LEN 0x01000 89 90 #ifdef DEBUG 91 #define ASC_DEBUG 92 #endif 93 94 #ifdef ASC_DEBUG 95 int asc_debug = 0; /* non-zero enables debugging output */ 96 #endif 97 98 static u_int8_t asc_wave_tab[0x800]; 99 100 static int asc_ring_bell __P((void *, int, int, int)); 101 static void asc_stop_bell __P((void *)); 102 static void asc_intr_enable __P((void)); 103 static void asc_intr __P((void *)); 104 105 static int ascmatch __P((struct device *, struct cfdata *, void *)); 106 static void ascattach __P((struct device *, struct device *, void *)); 107 108 struct cfattach asc_ca = { 109 sizeof(struct asc_softc), ascmatch, ascattach 110 }; 111 112 extern struct cfdriver asc_cd; 113 114 static int 115 ascmatch(parent, cf, aux) 116 struct device *parent; 117 struct cfdata *cf; 118 void *aux; 119 { 120 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 121 bus_addr_t addr; 122 bus_space_handle_t bsh; 123 int rval = 0; 124 125 if (oa->oa_addr != (-1)) 126 addr = (bus_addr_t)oa->oa_addr; 127 else if (current_mac_model->machineid == MACH_MACIIFX) 128 addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE; 129 else 130 addr = (bus_addr_t)MAC68K_ASC_BASE; 131 132 if (bus_space_map(oa->oa_tag, addr, MAC68K_ASC_LEN, 0, &bsh)) 133 return (0); 134 135 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0, 1)) 136 rval = 1; 137 else 138 rval = 0; 139 140 bus_space_unmap(oa->oa_tag, bsh, MAC68K_ASC_LEN); 141 142 return rval; 143 } 144 145 static void 146 ascattach(parent, self, aux) 147 struct device *parent, *self; 148 void *aux; 149 { 150 struct asc_softc *sc = (struct asc_softc *)self; 151 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 152 bus_addr_t addr; 153 int i; 154 155 sc->sc_tag = oa->oa_tag; 156 if (oa->oa_addr != (-1)) 157 addr = (bus_addr_t)oa->oa_addr; 158 else if (current_mac_model->machineid == MACH_MACIIFX) 159 addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE; 160 else 161 addr = (bus_addr_t)MAC68K_ASC_BASE; 162 if (bus_space_map(sc->sc_tag, addr, MAC68K_ASC_LEN, 0, 163 &sc->sc_handle)) { 164 printf(": can't map memory space\n"); 165 return; 166 } 167 sc->sc_open = 0; 168 sc->sc_ringing = 0; 169 170 for (i = 0; i < 256; i++) { /* up part of wave, four voices? */ 171 asc_wave_tab[i] = i / 4; 172 asc_wave_tab[i + 512] = i / 4; 173 asc_wave_tab[i + 1024] = i / 4; 174 asc_wave_tab[i + 1536] = i / 4; 175 } 176 for (i = 0; i < 256; i++) { /* down part of wave, four voices? */ 177 asc_wave_tab[i + 256] = 0x3f - (i / 4); 178 asc_wave_tab[i + 768] = 0x3f - (i / 4); 179 asc_wave_tab[i + 1280] = 0x3f - (i / 4); 180 asc_wave_tab[i + 1792] = 0x3f - (i / 4); 181 } 182 183 printf(": Apple Sound Chip"); 184 if (oa->oa_addr != (-1)) 185 printf(" at %x", oa->oa_addr); 186 printf("\n"); 187 188 mac68k_set_bell_callback(asc_ring_bell, sc); 189 190 via2_register_irq(VIA2_ASC, asc_intr, sc); 191 asc_intr_enable(); 192 } 193 194 int 195 ascopen(dev, flag, mode, p) 196 dev_t dev; 197 int flag; 198 int mode; 199 struct proc *p; 200 { 201 struct asc_softc *sc; 202 int unit; 203 204 unit = ASCUNIT(dev); 205 sc = asc_cd.cd_devs[unit]; 206 if (unit >= asc_cd.cd_ndevs) 207 return (ENXIO); 208 if (sc->sc_open) 209 return (EBUSY); 210 sc->sc_open = 1; 211 212 return (0); 213 } 214 215 int 216 ascclose(dev, flag, mode, p) 217 dev_t dev; 218 int flag; 219 int mode; 220 struct proc *p; 221 { 222 struct asc_softc *sc; 223 224 sc = asc_cd.cd_devs[ASCUNIT(dev)]; 225 sc->sc_open = 0; 226 227 return (0); 228 } 229 230 int 231 ascread(dev, uio, ioflag) 232 dev_t dev; 233 struct uio *uio; 234 int ioflag; 235 { 236 return (ENXIO); 237 } 238 239 int 240 ascwrite(dev, uio, ioflag) 241 dev_t dev; 242 struct uio *uio; 243 int ioflag; 244 { 245 return (ENXIO); 246 } 247 248 int 249 ascioctl(dev, cmd, data, flag, p) 250 dev_t dev; 251 int cmd; 252 caddr_t data; 253 int flag; 254 struct proc *p; 255 { 256 struct asc_softc *sc; 257 int error; 258 int unit = ASCUNIT(dev); 259 260 sc = asc_cd.cd_devs[unit]; 261 error = 0; 262 263 switch (cmd) { 264 default: 265 error = EINVAL; 266 break; 267 } 268 return (error); 269 } 270 271 int 272 ascpoll(dev, events, p) 273 dev_t dev; 274 int events; 275 struct proc *p; 276 { 277 return (events & (POLLOUT | POLLWRNORM)); 278 } 279 280 int 281 ascmmap(dev, off, prot) 282 dev_t dev; 283 int off; 284 int prot; 285 { 286 int unit = ASCUNIT(dev); 287 struct asc_softc *sc; 288 vm_offset_t pa; 289 290 sc = asc_cd.cd_devs[unit]; 291 if ((u_int)off < MAC68K_ASC_LEN) { 292 pa = pmap_extract(pmap_kernel(), (vm_offset_t)sc->sc_handle); 293 return m68k_btop(pa + off); 294 } 295 296 return (-1); 297 } 298 299 static int 300 asc_ring_bell(arg, freq, length, volume) 301 void *arg; 302 int freq, length, volume; 303 { 304 struct asc_softc *sc = (struct asc_softc *)arg; 305 unsigned long cfreq; 306 int i; 307 308 if (!sc) 309 return (ENODEV); 310 311 if (sc->sc_ringing == 0) { 312 313 bus_space_write_multi_1(sc->sc_tag, sc->sc_handle, 314 0, 0, 0x800); 315 bus_space_write_region_1(sc->sc_tag, sc->sc_handle, 316 0, asc_wave_tab, 0x800); 317 318 /* Fix this. Need to find exact ASC sampling freq */ 319 cfreq = 65536 * freq / 466; 320 321 /* printf("beep: from %d, %02x %02x %02x %02x\n", 322 * cur_beep.freq, (cfreq >> 24) & 0xff, (cfreq >> 16) & 0xff, 323 * (cfreq >> 8) & 0xff, (cfreq) & 0xff); */ 324 for (i = 0; i < 8; i++) { 325 bus_space_write_1(sc->sc_tag, sc->sc_handle, 326 0x814 + 8 * i, (cfreq >> 24) & 0xff); 327 bus_space_write_1(sc->sc_tag, sc->sc_handle, 328 0x815 + 8 * i, (cfreq >> 16) & 0xff); 329 bus_space_write_1(sc->sc_tag, sc->sc_handle, 330 0x816 + 8 * i, (cfreq >> 8) & 0xff); 331 bus_space_write_1(sc->sc_tag, sc->sc_handle, 332 0x817 + 8 * i, (cfreq) & 0xff); 333 } /* frequency; should put cur_beep.freq in here 334 * somewhere. */ 335 336 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x807, 3); /* 44 ? */ 337 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x806, 338 255 * volume / 100); 339 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x805, 0); 340 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80f, 0); 341 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x802, 2); /* sampled */ 342 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 2); /* enable sampled */ 343 } 344 sc->sc_ringing++; 345 timeout(asc_stop_bell, sc, length); 346 347 return (0); 348 } 349 350 static void 351 asc_stop_bell(arg) 352 void *arg; 353 { 354 struct asc_softc *sc = (struct asc_softc *)arg; 355 356 if (!sc) 357 return; 358 359 if (sc->sc_ringing > 1000 || sc->sc_ringing < 0) 360 panic("bell got out of sync?"); 361 362 if (--sc->sc_ringing == 0) /* disable ASC */ 363 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 0); 364 } 365 366 static void 367 asc_intr_enable() 368 { 369 int s; 370 371 s = splhigh(); 372 if (VIA2 == VIA2OFF) 373 via2_reg(vIER) = 0x80 | V2IF_ASC; 374 else 375 via2_reg(rIER) = 0x80 | V2IF_ASC; 376 splx(s); 377 } 378 379 380 /*ARGSUSED*/ 381 static void 382 asc_intr(arg) 383 void *arg; 384 { 385 #ifdef ASC_DEBUG 386 struct asc_softc *sc = (struct asc_softc *)arg; 387 388 if (asc_debug) 389 printf("asc_intr(%p)\n", sc); 390 #endif 391 } 392
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