asc.c revision 1.60
1 /* $NetBSD: asc.c,v 1.60 2025/04/09 13:09:49 nat 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 1.60 2025/04/09 13:09:49 nat 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/ascreg.h> 85 #include <mac68k/obio/ascvar.h> 86 #include <mac68k/obio/obiovar.h> 87 88 #define MAC68K_ASC_BASE 0x50f14000 89 #define MAC68K_IIFX_ASC_BASE 0x50f10000 90 #define MAC68K_ASC_LEN 0x01000 91 92 #ifdef DEBUG 93 #define ASC_DEBUG 94 #endif 95 96 #ifdef ASC_DEBUG 97 int asc_debug = 0; /* non-zero enables debugging output */ 98 #endif 99 100 static u_int8_t asc_wave_tab[0x800]; 101 102 static int asc_ring_bell(void *, int, int, int); 103 static void asc_stop_bell(void *); 104 #if __notyet__ 105 static void asc_intr_enable(void); 106 static void asc_intr(void *); 107 #endif 108 109 static int ascmatch(device_t, cfdata_t, void *); 110 static void ascattach(device_t, device_t, void *); 111 112 CFATTACH_DECL_NEW(asc, sizeof(struct asc_softc), 113 ascmatch, ascattach, NULL, NULL); 114 115 extern struct cfdriver asc_cd; 116 117 dev_type_open(ascopen); 118 dev_type_close(ascclose); 119 dev_type_read(ascread); 120 dev_type_write(ascwrite); 121 dev_type_ioctl(ascioctl); 122 dev_type_mmap(ascmmap); 123 124 const struct cdevsw asc_cdevsw = { 125 .d_open = ascopen, 126 .d_close = ascclose, 127 .d_read = ascread, 128 .d_write = ascwrite, 129 .d_ioctl = ascioctl, 130 .d_stop = nostop, 131 .d_tty = notty, 132 .d_poll = nopoll, 133 .d_mmap = ascmmap, 134 .d_kqfilter = nokqfilter, 135 .d_discard = nodiscard, 136 .d_flag = 0 137 }; 138 139 static const uint8_t easc_version_tab[] = { EASC_VER, EASC_VER2 }; 140 141 static int 142 ascmatch(device_t parent, cfdata_t cf, void *aux) 143 { 144 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 145 bus_addr_t addr; 146 bus_space_handle_t bsh; 147 int rval = 0; 148 uint8_t ver; 149 150 if (oa->oa_addr != (-1)) 151 addr = (bus_addr_t)oa->oa_addr; 152 else if (current_mac_model->machineid == MACH_MACTV) 153 return 0; 154 else if (current_mac_model->machineid == MACH_MACIIFX) 155 addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE; 156 else 157 addr = (bus_addr_t)MAC68K_ASC_BASE; 158 159 if (bus_space_map(oa->oa_tag, addr, MAC68K_ASC_LEN, 0, &bsh)) 160 return (0); 161 162 if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0, 1)) { 163 rval = 1; 164 165 /* 166 * Enhanced Apple Sound Chip (EASC) does not support wavetable 167 * mode, exclude it for now. 168 */ 169 ver = bus_space_read_1(oa->oa_tag, bsh, VERLOC); 170 for (size_t i = 0; i < __arraycount(easc_version_tab); i++) 171 if (ver == easc_version_tab[i]) { 172 rval = 0; 173 break; 174 } 175 } else 176 rval = 0; 177 178 bus_space_unmap(oa->oa_tag, bsh, MAC68K_ASC_LEN); 179 180 return rval; 181 } 182 183 static void 184 ascattach(device_t parent, device_t self, void *aux) 185 { 186 struct asc_softc *sc = device_private(self); 187 struct obio_attach_args *oa = (struct obio_attach_args *)aux; 188 bus_addr_t addr; 189 int i; 190 191 sc->sc_dev = self; 192 sc->sc_tag = oa->oa_tag; 193 if (oa->oa_addr != (-1)) 194 addr = (bus_addr_t)oa->oa_addr; 195 else if (current_mac_model->machineid == MACH_MACIIFX) 196 addr = (bus_addr_t)MAC68K_IIFX_ASC_BASE; 197 else 198 addr = (bus_addr_t)MAC68K_ASC_BASE; 199 if (bus_space_map(sc->sc_tag, addr, MAC68K_ASC_LEN, 0, 200 &sc->sc_handle)) { 201 printf(": can't map memory space\n"); 202 return; 203 } 204 sc->sc_open = 0; 205 sc->sc_ringing = 0; 206 callout_init(&sc->sc_bell_ch, 0); 207 208 for (i = 0; i < 256; i++) { /* up part of wave, four voices? */ 209 asc_wave_tab[i] = i / 4; 210 asc_wave_tab[i + 512] = i / 4; 211 asc_wave_tab[i + 1024] = i / 4; 212 asc_wave_tab[i + 1536] = i / 4; 213 } 214 for (i = 0; i < 256; i++) { /* down part of wave, four voices? */ 215 asc_wave_tab[i + 256] = 0x3f - (i / 4); 216 asc_wave_tab[i + 768] = 0x3f - (i / 4); 217 asc_wave_tab[i + 1280] = 0x3f - (i / 4); 218 asc_wave_tab[i + 1792] = 0x3f - (i / 4); 219 } 220 221 printf(": Apple Sound Chip"); 222 if (oa->oa_addr != (-1)) 223 printf(" at %x", oa->oa_addr); 224 printf("\n"); 225 226 mac68k_set_bell_callback(asc_ring_bell, sc); 227 #if __notyet__ 228 if (mac68k_machine.aux_interrupts) { 229 intr_establish((int (*)(void *))asc_intr, sc, 5); 230 } else { 231 via2_register_irq(VIA2_ASC, asc_intr, sc); 232 } 233 asc_intr_enable(); 234 #endif 235 } 236 237 int 238 ascopen(dev_t dev, int flag, int mode, struct lwp *l) 239 { 240 struct asc_softc *sc; 241 242 sc = device_lookup_private(&asc_cd, ASCUNIT(dev)); 243 if (sc == NULL) 244 return (ENXIO); 245 if (sc->sc_open) 246 return (EBUSY); 247 sc->sc_open = 1; 248 249 return (0); 250 } 251 252 int 253 ascclose(dev_t dev, int flag, int mode, struct lwp *l) 254 { 255 struct asc_softc *sc; 256 257 sc = device_lookup_private(&asc_cd, ASCUNIT(dev)); 258 sc->sc_open = 0; 259 260 return (0); 261 } 262 263 int 264 ascread(dev_t dev, struct uio *uio, int ioflag) 265 { 266 return (ENXIO); 267 } 268 269 int 270 ascwrite(dev_t dev, struct uio *uio, int ioflag) 271 { 272 return (ENXIO); 273 } 274 275 int 276 ascioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 277 { 278 int error; 279 #ifdef not_yet 280 struct asc_softc *sc; 281 int unit = ASCUNIT(dev); 282 283 sc = device_lookup_private(&asc_cd, unit); 284 #endif 285 error = 0; 286 287 switch (cmd) { 288 default: 289 error = EINVAL; 290 break; 291 } 292 return (error); 293 } 294 295 paddr_t 296 ascmmap(dev_t dev, off_t off, int prot) 297 { 298 struct asc_softc *sc; 299 paddr_t pa; 300 301 sc = device_lookup_private(&asc_cd, ASCUNIT(dev)); 302 if ((u_int)off < MAC68K_ASC_LEN) { 303 (void) pmap_extract(pmap_kernel(), (vaddr_t)sc->sc_handle.base, 304 &pa); 305 return m68k_btop(pa + off); 306 } 307 308 return (-1); 309 } 310 311 static int 312 asc_ring_bell(void *arg, int freq, int length, int volume) 313 { 314 struct asc_softc *sc = (struct asc_softc *)arg; 315 unsigned long cfreq; 316 int i; 317 318 if (!sc) 319 return (ENODEV); 320 321 if (sc->sc_ringing == 0) { 322 323 bus_space_write_multi_1(sc->sc_tag, sc->sc_handle, 324 0, 0, 0x800); 325 bus_space_write_region_1(sc->sc_tag, sc->sc_handle, 326 0, asc_wave_tab, 0x800); 327 328 /* Fix this. Need to find exact ASC sampling freq */ 329 cfreq = 65536 * freq / 466; 330 331 /* printf("beep: from %d, %02x %02x %02x %02x\n", 332 * cur_beep.freq, (cfreq >> 24) & 0xff, (cfreq >> 16) & 0xff, 333 * (cfreq >> 8) & 0xff, (cfreq) & 0xff); */ 334 for (i = 0; i < 8; i++) { 335 bus_space_write_1(sc->sc_tag, sc->sc_handle, 336 0x814 + 8 * i, (cfreq >> 24) & 0xff); 337 bus_space_write_1(sc->sc_tag, sc->sc_handle, 338 0x815 + 8 * i, (cfreq >> 16) & 0xff); 339 bus_space_write_1(sc->sc_tag, sc->sc_handle, 340 0x816 + 8 * i, (cfreq >> 8) & 0xff); 341 bus_space_write_1(sc->sc_tag, sc->sc_handle, 342 0x817 + 8 * i, (cfreq) & 0xff); 343 } /* frequency; should put cur_beep.freq in here 344 * somewhere. */ 345 346 bus_space_write_1(sc->sc_tag, sc->sc_handle, ASCRATE, F44KHZ); 347 bus_space_write_1(sc->sc_tag, sc->sc_handle, INTVOL, 348 255 * volume / 100); 349 bus_space_write_1(sc->sc_tag, sc->sc_handle, 0x805, 0); 350 bus_space_write_1(sc->sc_tag, sc->sc_handle, ASCTEST, 0); 351 bus_space_write_1(sc->sc_tag, sc->sc_handle, ASCTRL, 2); 352 /* XXX NS 2 is identified in ascreg.h as STEREO, sampled */ 353 bus_space_write_1(sc->sc_tag, sc->sc_handle, ASCMODE, 354 MODEWAVE); /* enable sampled */ 355 sc->sc_ringing = 1; 356 callout_reset(&sc->sc_bell_ch, length, asc_stop_bell, sc); 357 } 358 359 return (0); 360 } 361 362 static void 363 asc_stop_bell(void *arg) 364 { 365 struct asc_softc *sc = (struct asc_softc *)arg; 366 367 if (!sc) 368 return; 369 370 if (sc->sc_ringing > 1000 || sc->sc_ringing < 0) 371 panic("bell got out of sync?"); 372 373 if (--sc->sc_ringing == 0) { /* disable ASC */ 374 bus_space_write_1(sc->sc_tag, sc->sc_handle, ASCMODE, 375 MODESTOP); 376 } 377 } 378 379 #if __notyet__ 380 static void 381 asc_intr_enable(void) 382 { 383 int s; 384 385 s = splhigh(); 386 if (VIA2 == VIA2OFF) 387 via2_reg(vIER) = 0x80 | V2IF_ASC; 388 else 389 via2_reg(rIER) = 0x80 | V2IF_ASC; 390 splx(s); 391 } 392 393 /*ARGSUSED*/ 394 static void 395 asc_intr(void *arg) 396 { 397 #ifdef ASC_DEBUG 398 struct asc_softc *sc = (struct asc_softc *)arg; 399 400 if (asc_debug) 401 printf("asc_intr(%p)\n", sc); 402 #endif 403 } 404 #endif 405
Indexes created Tue Sep 30 11:09:46 GMT 2025