asc.c revision 1.59
1 /* $NetBSD: asc.c,v 1.59 2025/01/13 16:23:48 riastradh 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/cdefs.h> 67 __KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.59 2025/01/13 16:23:48 riastradh Exp $"); 68 69 #include <sys/types.h> 70 #include <sys/errno.h> 71 #include <sys/time.h> 72 #include <sys/systm.h> 73 #include <sys/param.h> 74 #include <sys/device.h> 75 #include <sys/conf.h> 76 77 #include <uvm/uvm_extern.h> 78 79 #include <machine/autoconf.h> 80 #include <machine/cpu.h> 81 #include <machine/bus.h> 82 #include <machine/viareg.h> 83 84 #include <mac68k/obio/ascvar.h> 85 #include <mac68k/obio/obiovar.h> 86 87 #define MAC68K_ASC_BASE 0x50f14000 88 #define MAC68K_IIFX_ASC_BASE 0x50f10000 89 #define MAC68K_ASC_LEN 0x01000 90 91 #ifdef DEBUG 92 #define ASC_DEBUG 93 #endif 94 95 #ifdef ASC_DEBUG 96 int asc_debug = 0; /* non-zero enables debugging output */ 97 #endif 98 99 static u_int8_t asc_wave_tab[0x800]; 100 101 static int asc_ring_bell(void *, int, int, int); 102 static void asc_stop_bell(void *); 103 #if __notyet__ 104 static void asc_intr_enable(void); 105 static void asc_intr(void *); 106 #endif 107 108 static int ascmatch(device_t, cfdata_t, void *); 109 static void ascattach(device_t, device_t, void *); 110 111 CFATTACH_DECL_NEW(asc, sizeof(struct asc_softc), 112 ascmatch, ascattach, NULL, NULL); 113 114 extern struct cfdriver asc_cd; 115 116 dev_type_open(ascopen); 117 dev_type_close(ascclose); 118 dev_type_read(ascread); 119 dev_type_write(ascwrite); 120 dev_type_ioctl(ascioctl); 121 dev_type_mmap(ascmmap); 122 123 const struct cdevsw asc_cdevsw = { 124 .d_open = ascopen, 125 .d_close = ascclose, 126 .d_read = ascread, 127 .d_write = ascwrite, 128 .d_ioctl = ascioctl, 129 .d_stop = nostop, 130 .d_tty = notty, 131 .d_poll = nopoll, 132 .d_mmap = ascmmap, 133 .d_kqfilter = nokqfilter, 134 .d_discard = nodiscard, 135 .d_flag = 0 136 }; 137 138 static const uint8_t easc_version_tab[] = { 0xb0 }; 139 140 static int 141 ascmatch(device_t parent, cfdata_t cf, void *aux) 142 { 143 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 144 bus_addr_t addr; 145 bus_space_handle_t bsh; 146 int rval = 0; 147 uint8_t ver; 148 149 if (oa->oa_addr != (-1)) 150 addr = (bus_addr_t)oa->oa_addr; 151 else if (current_mac_model->machineid == MACH_MACTV) 152 return 0; 153 else if (current_mac_model->machineid == MACH_MACIIFX) 154 addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE; 155 else 156 addr = (bus_addr_t)MAC68K_ASC_BASE; 157 158 if (bus_space_map(oa->oa_tag, addr, MAC68K_ASC_LEN, 0, &bsh)) 159 return (0); 160 161 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0, 1)) { 162 rval = 1; 163 164 /* 165 * Enhanced Apple Sound Chip (EASC) does not support wavetable 166 * mode, exclude it for now. 167 */ 168 ver = bus_space_read_1(oa->oa_tag, bsh, 0x800); 169 for (size_t i = 0; i < __arraycount(easc_version_tab); i++) 170 if (ver == easc_version_tab[i]) { 171 rval = 0; 172 break; 173 } 174 } else 175 rval = 0; 176 177 bus_space_unmap(oa->oa_tag, bsh, MAC68K_ASC_LEN); 178 179 return rval; 180 } 181 182 static void 183 ascattach(device_t parent, device_t self, void *aux) 184 { 185 struct asc_softc *sc = device_private(self); 186 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 187 bus_addr_t addr; 188 int i; 189 190 sc->sc_dev = self; 191 sc->sc_tag = oa->oa_tag; 192 if (oa->oa_addr != (-1)) 193 addr = (bus_addr_t)oa->oa_addr; 194 else if (current_mac_model->machineid == MACH_MACIIFX) 195 addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE; 196 else 197 addr = (bus_addr_t)MAC68K_ASC_BASE; 198 if (bus_space_map(sc->sc_tag, addr, MAC68K_ASC_LEN, 0, 199 &sc->sc_handle)) { 200 printf(": can't map memory space\n"); 201 return; 202 } 203 sc->sc_open = 0; 204 sc->sc_ringing = 0; 205 callout_init(&sc->sc_bell_ch, 0); 206 207 for (i = 0; i < 256; i++) { /* up part of wave, four voices? */ 208 asc_wave_tab[i] = i / 4; 209 asc_wave_tab[i + 512] = i / 4; 210 asc_wave_tab[i + 1024] = i / 4; 211 asc_wave_tab[i + 1536] = i / 4; 212 } 213 for (i = 0; i < 256; i++) { /* down part of wave, four voices? */ 214 asc_wave_tab[i + 256] = 0x3f - (i / 4); 215 asc_wave_tab[i + 768] = 0x3f - (i / 4); 216 asc_wave_tab[i + 1280] = 0x3f - (i / 4); 217 asc_wave_tab[i + 1792] = 0x3f - (i / 4); 218 } 219 220 printf(": Apple Sound Chip"); 221 if (oa->oa_addr != (-1)) 222 printf(" at %x", oa->oa_addr); 223 printf("\n"); 224 225 mac68k_set_bell_callback(asc_ring_bell, sc); 226 #if __notyet__ 227 if (mac68k_machine.aux_interrupts) { 228 intr_establish((int (*)(void *))asc_intr, sc, 5); 229 } else { 230 via2_register_irq(VIA2_ASC, asc_intr, sc); 231 } 232 asc_intr_enable(); 233 #endif 234 } 235 236 int 237 ascopen(dev_t dev, int flag, int mode, struct lwp *l) 238 { 239 struct asc_softc *sc; 240 241 sc = device_lookup_private(&asc_cd, ASCUNIT(dev)); 242 if (sc == NULL) 243 return (ENXIO); 244 if (sc->sc_open) 245 return (EBUSY); 246 sc->sc_open = 1; 247 248 return (0); 249 } 250 251 int 252 ascclose(dev_t dev, int flag, int mode, struct lwp *l) 253 { 254 struct asc_softc *sc; 255 256 sc = device_lookup_private(&asc_cd, ASCUNIT(dev)); 257 sc->sc_open = 0; 258 259 return (0); 260 } 261 262 int 263 ascread(dev_t dev, struct uio *uio, int ioflag) 264 { 265 return (ENXIO); 266 } 267 268 int 269 ascwrite(dev_t dev, struct uio *uio, int ioflag) 270 { 271 return (ENXIO); 272 } 273 274 int 275 ascioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 276 { 277 int error; 278 #ifdef not_yet 279 struct asc_softc *sc; 280 int unit = ASCUNIT(dev); 281 282 sc = device_lookup_private(&asc_cd, unit); 283 #endif 284 error = 0; 285 286 switch (cmd) { 287 default: 288 error = EINVAL; 289 break; 290 } 291 return (error); 292 } 293 294 paddr_t 295 ascmmap(dev_t dev, off_t off, int prot) 296 { 297 struct asc_softc *sc; 298 paddr_t pa; 299 300 sc = device_lookup_private(&asc_cd, ASCUNIT(dev)); 301 if ((u_int)off < MAC68K_ASC_LEN) { 302 (void) pmap_extract(pmap_kernel(), (vaddr_t)sc->sc_handle.base, 303 &pa); 304 return m68k_btop(pa + off); 305 } 306 307 return (-1); 308 } 309 310 static int 311 asc_ring_bell(void *arg, int freq, int length, int volume) 312 { 313 struct asc_softc *sc = (struct asc_softc *)arg; 314 unsigned long cfreq; 315 int i; 316 317 if (!sc) 318 return (ENODEV); 319 320 if (sc->sc_ringing == 0) { 321 322 bus_space_write_multi_1(sc->sc_tag, sc->sc_handle, 323 0, 0, 0x800); 324 bus_space_write_region_1(sc->sc_tag, sc->sc_handle, 325 0, asc_wave_tab, 0x800); 326 327 /* Fix this. Need to find exact ASC sampling freq */ 328 cfreq = 65536 * freq / 466; 329 330 /* printf("beep: from %d, %02x %02x %02x %02x\n", 331 * cur_beep.freq, (cfreq >> 24) & 0xff, (cfreq >> 16) & 0xff, 332 * (cfreq >> 8) & 0xff, (cfreq) & 0xff); */ 333 for (i = 0; i < 8; i++) { 334 bus_space_write_1(sc->sc_tag, sc->sc_handle, 335 0x814 + 8 * i, (cfreq >> 24) & 0xff); 336 bus_space_write_1(sc->sc_tag, sc->sc_handle, 337 0x815 + 8 * i, (cfreq >> 16) & 0xff); 338 bus_space_write_1(sc->sc_tag, sc->sc_handle, 339 0x816 + 8 * i, (cfreq >> 8) & 0xff); 340 bus_space_write_1(sc->sc_tag, sc->sc_handle, 341 0x817 + 8 * i, (cfreq) & 0xff); 342 } /* frequency; should put cur_beep.freq in here 343 * somewhere. */ 344 345 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x807, 3); /* 44 ? */ 346 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x806, 347 255 * volume / 100); 348 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x805, 0); 349 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x80f, 0); 350 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x802, 2); /* sampled */ 351 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 2); /* enable sampled */ 352 sc->sc_ringing = 1; 353 callout_reset(&sc->sc_bell_ch, length, asc_stop_bell, sc); 354 } 355 356 return (0); 357 } 358 359 static void 360 asc_stop_bell(void *arg) 361 { 362 struct asc_softc *sc = (struct asc_softc *)arg; 363 364 if (!sc) 365 return; 366 367 if (sc->sc_ringing > 1000 || sc->sc_ringing < 0) 368 panic("bell got out of sync?"); 369 370 if (--sc->sc_ringing == 0) /* disable ASC */ 371 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x801, 0); 372 } 373 374 #if __notyet__ 375 static void 376 asc_intr_enable(void) 377 { 378 int s; 379 380 s = splhigh(); 381 if (VIA2 == VIA2OFF) 382 via2_reg(vIER) = 0x80 | V2IF_ASC; 383 else 384 via2_reg(rIER) = 0x80 | V2IF_ASC; 385 splx(s); 386 } 387 388 /*ARGSUSED*/ 389 static void 390 asc_intr(void *arg) 391 { 392 #ifdef ASC_DEBUG 393 struct asc_softc *sc = (struct asc_softc *)arg; 394 395 if (asc_debug) 396 printf("asc_intr(%p)\n", sc); 397 #endif 398 } 399 #endif 400
Indexes created Tue Sep 30 20:09:53 GMT 2025