audioamd.c revision 1.26.4.1
1 /* $NetBSD: audioamd.c,v 1.26.4.1 2011/11/20 10:56:18 mrg Exp $ */ 2 /* NetBSD: am7930_sparc.c,v 1.44 1999/03/14 22:29:00 jonathan Exp */ 3 4 /* 5 * Copyright (c) 1995 Rolf Grossmann 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Rolf Grossmann. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: audioamd.c,v 1.26.4.1 2011/11/20 10:56:18 mrg Exp $"); 36 37 #include "audio.h" 38 #if NAUDIO > 0 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/errno.h> 43 #include <sys/device.h> 44 #include <sys/bus.h> 45 #include <sys/intr.h> 46 #include <sys/mutex.h> 47 48 #include <machine/autoconf.h> 49 50 #include <sys/audioio.h> 51 #include <dev/audio_if.h> 52 53 #include <dev/ic/am7930reg.h> 54 #include <dev/ic/am7930var.h> 55 #include <sparc/dev/audioamdvar.h> 56 57 #define AUDIO_ROM_NAME "audio" 58 59 #ifdef AUDIO_DEBUG 60 #define DPRINTF(x) if (am7930debug) printf x 61 #define DPRINTFN(n,x) if (am7930debug>(n)) printf x 62 #else 63 #define DPRINTF(x) 64 #define DPRINTFN(n,x) 65 #endif /* AUDIO_DEBUG */ 66 67 68 /* interrupt interfaces */ 69 int am7930hwintr(void *); 70 struct auio *auiop; 71 void am7930swintr(void *); 72 73 /* from amd7930intr.s: */ 74 void amd7930_trap(void); 75 76 /* 77 * interrupt-handler status 78 */ 79 struct am7930_intrhand { 80 int (*ih_fun)(void *); 81 void *ih_arg; 82 }; 83 84 struct audioamd_softc { 85 struct am7930_softc sc_am7930; /* glue to MI code */ 86 87 bus_space_tag_t sc_bt; /* bus cookie */ 88 bus_space_handle_t sc_bh; /* device registers */ 89 90 struct am7930_intrhand sc_ih; /* interrupt vector (hw or sw) */ 91 void (*sc_rintr)(void*); /* input completion intr handler */ 92 void *sc_rarg; /* arg for sc_rintr() */ 93 void (*sc_pintr)(void*); /* output completion intr handler */ 94 void *sc_parg; /* arg for sc_pintr() */ 95 96 /* sc_au is special in that the hardware interrupt handler uses it */ 97 struct auio sc_au; /* recv and xmit buffers, etc */ 98 #define sc_intrcnt sc_au.au_intrcnt /* statistics */ 99 void *sc_sicookie; /* softintr(9) cookie */ 100 kmutex_t sc_lock; 101 }; 102 103 int audioamd_mainbus_match(device_t, cfdata_t, void *); 104 void audioamd_mainbus_attach(device_t, device_t, void *); 105 int audioamd_obio_match(device_t, cfdata_t, void *); 106 void audioamd_obio_attach(device_t, device_t, void *); 107 int audioamd_sbus_match(device_t, cfdata_t, void *); 108 void audioamd_sbus_attach(device_t, device_t, void *); 109 void audioamd_attach(struct audioamd_softc *, int); 110 111 CFATTACH_DECL_NEW(audioamd_mainbus, sizeof(struct audioamd_softc), 112 audioamd_mainbus_match, audioamd_mainbus_attach, NULL, NULL); 113 114 CFATTACH_DECL_NEW(audioamd_obio, sizeof(struct audioamd_softc), 115 audioamd_obio_match, audioamd_obio_attach, NULL, NULL); 116 117 CFATTACH_DECL_NEW(audioamd_sbus, sizeof(struct audioamd_softc), 118 audioamd_sbus_match, audioamd_sbus_attach, NULL, NULL); 119 120 /* 121 * Define our interface into the am7930 MI driver. 122 */ 123 124 uint8_t audioamd_codec_iread(struct am7930_softc *, int); 125 uint16_t audioamd_codec_iread16(struct am7930_softc *, int); 126 uint8_t audioamd_codec_dread(struct audioamd_softc *, int); 127 void audioamd_codec_iwrite(struct am7930_softc *, int, uint8_t); 128 void audioamd_codec_iwrite16(struct am7930_softc *, int, uint16_t); 129 void audioamd_codec_dwrite(struct audioamd_softc *, int, uint8_t); 130 void audioamd_onopen(struct am7930_softc *); 131 void audioamd_onclose(struct am7930_softc *); 132 133 struct am7930_glue audioamd_glue = { 134 audioamd_codec_iread, 135 audioamd_codec_iwrite, 136 audioamd_codec_iread16, 137 audioamd_codec_iwrite16, 138 audioamd_onopen, 139 audioamd_onclose, 140 0, 141 0, 142 0, 143 }; 144 145 /* 146 * Define our interface to the higher level audio driver. 147 */ 148 int audioamd_start_output(void *, void *, int, void (*)(void *), void *); 149 int audioamd_start_input(void *, void *, int, void (*)(void *), void *); 150 int audioamd_getdev(void *, struct audio_device *); 151 void audioamd_get_locks(void *opaque, kmutex_t **intr, kmutex_t **thread); 152 153 const struct audio_hw_if sa_hw_if = { 154 am7930_open, 155 am7930_close, 156 0, 157 am7930_query_encoding, 158 am7930_set_params, 159 am7930_round_blocksize, 160 am7930_commit_settings, 161 0, 162 0, 163 audioamd_start_output, /* md */ 164 audioamd_start_input, /* md */ 165 am7930_halt_output, 166 am7930_halt_input, 167 0, 168 audioamd_getdev, 169 0, 170 am7930_set_port, 171 am7930_get_port, 172 am7930_query_devinfo, 173 0, 174 0, 175 0, 176 0, 177 am7930_get_props, 178 0, 179 0, 180 0, 181 0, 182 audioamd_get_locks, 183 }; 184 185 struct audio_device audioamd_device = { 186 "am7930", 187 "x", 188 "audioamd" 189 }; 190 191 192 int 193 audioamd_mainbus_match(device_t parent, cfdata_t cf, void *aux) 194 { 195 struct mainbus_attach_args *ma; 196 197 ma = aux; 198 if (CPU_ISSUN4) 199 return 0; 200 return strcmp(AUDIO_ROM_NAME, ma->ma_name) == 0; 201 } 202 203 int 204 audioamd_obio_match(device_t parent, cfdata_t cf, void *aux) 205 { 206 union obio_attach_args *uoba; 207 208 uoba = aux; 209 if (uoba->uoba_isobio4 != 0) 210 return 0; 211 212 return strcmp("audio", uoba->uoba_sbus.sa_name) == 0; 213 } 214 215 int 216 audioamd_sbus_match(device_t parent, cfdata_t cf, void *aux) 217 { 218 struct sbus_attach_args *sa; 219 220 sa = aux; 221 return strcmp(AUDIO_ROM_NAME, sa->sa_name) == 0; 222 } 223 224 void 225 audioamd_mainbus_attach(device_t parent, device_t self, void *aux) 226 { 227 struct mainbus_attach_args *ma; 228 struct audioamd_softc *sc; 229 bus_space_handle_t bh; 230 231 ma = aux; 232 sc = device_private(self); 233 sc->sc_am7930.sc_dev = self; 234 sc->sc_bt = ma->ma_bustag; 235 236 if (bus_space_map( 237 ma->ma_bustag, 238 ma->ma_paddr, 239 AM7930_DREG_SIZE, 240 BUS_SPACE_MAP_LINEAR, 241 &bh) != 0) { 242 printf("%s: cannot map registers\n", device_xname(self)); 243 return; 244 } 245 sc->sc_bh = bh; 246 audioamd_attach(sc, ma->ma_pri); 247 } 248 249 void 250 audioamd_obio_attach(device_t parent, device_t self, void *aux) 251 { 252 union obio_attach_args *uoba; 253 struct sbus_attach_args *sa; 254 struct audioamd_softc *sc; 255 bus_space_handle_t bh; 256 257 uoba = aux; 258 sa = &uoba->uoba_sbus; 259 sc = device_private(self); 260 sc->sc_am7930.sc_dev = self; 261 sc->sc_bt = sa->sa_bustag; 262 263 if (sbus_bus_map(sa->sa_bustag, 264 sa->sa_slot, sa->sa_offset, 265 AM7930_DREG_SIZE, 266 0, &bh) != 0) { 267 printf("%s: cannot map registers\n", device_xname(self)); 268 return; 269 } 270 sc->sc_bh = bh; 271 audioamd_attach(sc, sa->sa_pri); 272 } 273 274 void 275 audioamd_sbus_attach(device_t parent, device_t self, void *aux) 276 { 277 struct sbus_attach_args *sa; 278 struct audioamd_softc *sc; 279 bus_space_handle_t bh; 280 281 sa = aux; 282 sc = device_private(self); 283 sc->sc_am7930.sc_dev = self; 284 sc->sc_bt = sa->sa_bustag; 285 286 if (sbus_bus_map(sa->sa_bustag, 287 sa->sa_slot, sa->sa_offset, 288 AM7930_DREG_SIZE, 289 0, &bh) != 0) { 290 printf("%s: cannot map registers\n", device_xname(self)); 291 return; 292 } 293 sc->sc_bh = bh; 294 audioamd_attach(sc, sa->sa_pri); 295 } 296 297 void 298 audioamd_attach(struct audioamd_softc *sc, int pri) 299 { 300 device_t self; 301 302 /* 303 * Set up glue for MI code early; we use some of it here. 304 */ 305 self = sc->sc_am7930.sc_dev; 306 sc->sc_am7930.sc_glue = &audioamd_glue; 307 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_HIGH); 308 309 am7930_init(&sc->sc_am7930, AUDIOAMD_POLL_MODE); 310 311 auiop = &sc->sc_au; 312 313 /* Copy bus tag & handle for use by am7930_trap */ 314 sc->sc_au.au_bt = sc->sc_bt; 315 sc->sc_au.au_bh = sc->sc_bh; 316 (void)bus_intr_establish2(sc->sc_bt, pri, IPL_HIGH, 317 am7930hwintr, sc, 318 #ifdef notyet /* XXX amd7930intr.s needs to be fixed for MI softint(9) */ 319 amd7930_trap 320 #else 321 NULL 322 #endif 323 ); 324 325 sc->sc_sicookie = softint_establish(SOFTINT_SERIAL, am7930swintr, sc); 326 if (sc->sc_sicookie == NULL) { 327 printf("\n%s: cannot establish software interrupt\n", 328 device_xname(self)); 329 return; 330 } 331 332 printf(" softpri %d\n", IPL_SOFTAUDIO); 333 334 335 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 336 device_xname(self), "intr"); 337 338 audio_attach_mi(&sa_hw_if, sc, self); 339 } 340 341 342 void 343 audioamd_onopen(struct am7930_softc *sc) 344 { 345 struct audioamd_softc *mdsc; 346 347 mdsc = (struct audioamd_softc *)sc; 348 349 /* reset pdma state */ 350 mutex_spin_enter(&mdsc->sc_lock); 351 mdsc->sc_rintr = 0; 352 mdsc->sc_rarg = 0; 353 mdsc->sc_pintr = 0; 354 mdsc->sc_parg = 0; 355 mdsc->sc_au.au_rdata = 0; 356 mdsc->sc_au.au_pdata = 0; 357 mutex_spin_exit(&mdsc->sc_lock); 358 } 359 360 361 void 362 audioamd_onclose(struct am7930_softc *sc) 363 { 364 /* On sparc, just do the chipset-level halt. */ 365 am7930_halt_input(sc); 366 am7930_halt_output(sc); 367 } 368 369 int 370 audioamd_start_output(void *addr, void *p, int cc, 371 void (*intr)(void *), void *arg) 372 { 373 struct audioamd_softc *sc; 374 375 DPRINTFN(1, ("sa_start_output: cc=%d %p (%p)\n", cc, intr, arg)); 376 sc = addr; 377 378 mutex_spin_enter(&sc->sc_lock); 379 audioamd_codec_iwrite(&sc->sc_am7930, 380 AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE); 381 sc->sc_pintr = intr; 382 sc->sc_parg = arg; 383 sc->sc_au.au_pdata = p; 384 sc->sc_au.au_pend = (char *)p + cc - 1; 385 mutex_spin_exit(&sc->sc_lock); 386 387 DPRINTF(("sa_start_output: started intrs.\n")); 388 return(0); 389 } 390 391 int 392 audioamd_start_input(void *addr, void *p, int cc, 393 void (*intr)(void *), void *arg) 394 { 395 struct audioamd_softc *sc; 396 397 DPRINTFN(1, ("sa_start_input: cc=%d %p (%p)\n", cc, intr, arg)); 398 sc = addr; 399 400 mutex_spin_enter(&sc->sc_lock); 401 audioamd_codec_iwrite(&sc->sc_am7930, 402 AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE); 403 sc->sc_rintr = intr; 404 sc->sc_rarg = arg; 405 sc->sc_au.au_rdata = p; 406 sc->sc_au.au_rend = (char *)p + cc -1; 407 mutex_spin_exit(&sc->sc_lock); 408 409 DPRINTF(("sa_start_input: started intrs.\n")); 410 411 return(0); 412 } 413 414 415 /* 416 * Pseudo-DMA support: either C or locore assember. 417 */ 418 419 int 420 am7930hwintr(void *v) 421 { 422 struct audioamd_softc *sc; 423 struct auio *au; 424 uint8_t *d, *e; 425 int k; 426 427 sc = v; 428 au = &sc->sc_au; 429 mutex_spin_enter(&sc->sc_lock); 430 431 /* clear interrupt */ 432 k = audioamd_codec_dread(sc, AM7930_DREG_IR); 433 if ((k & (AM7930_IR_DTTHRSH|AM7930_IR_DRTHRSH|AM7930_IR_DSRI| 434 AM7930_IR_DERI|AM7930_IR_BBUFF)) == 0) { 435 mutex_spin_exit(&sc->sc_lock); 436 return 0; 437 } 438 439 /* receive incoming data */ 440 d = au->au_rdata; 441 e = au->au_rend; 442 if (d && d <= e) { 443 *d = audioamd_codec_dread(sc, AM7930_DREG_BBRB); 444 au->au_rdata++; 445 if (d == e) { 446 DPRINTFN(1, ("am7930hwintr: swintr(r) requested")); 447 softint_schedule(sc->sc_sicookie); 448 } 449 } 450 451 /* send outgoing data */ 452 d = au->au_pdata; 453 e = au->au_pend; 454 if (d && d <= e) { 455 audioamd_codec_dwrite(sc, AM7930_DREG_BBTB, *d); 456 au->au_pdata++; 457 if (d == e) { 458 DPRINTFN(1, ("am7930hwintr: swintr(p) requested")); 459 softint_schedule(sc->sc_sicookie); 460 } 461 } 462 463 au->au_intrcnt.ev_count++; 464 mutex_spin_exit(&sc->sc_lock); 465 466 return 1; 467 } 468 469 void 470 am7930swintr(void *sc0) 471 { 472 struct audioamd_softc *sc; 473 struct auio *au; 474 bool pint; 475 476 sc = sc0; 477 DPRINTFN(1, ("audiointr: sc=%p\n", sc);); 478 479 au = &sc->sc_au; 480 mutex_spin_enter(&sc->sc_lock); 481 if (au->au_rdata > au->au_rend && sc->sc_rintr != NULL) { 482 mutex_spin_exit(&sc->sc_lock); 483 (*sc->sc_rintr)(sc->sc_rarg); 484 mutex_spin_enter(&sc->sc_lock); 485 } 486 pint = (au->au_pdata > au->au_pend && sc->sc_pintr != NULL); 487 mutex_spin_exit(&sc->sc_lock); 488 if (pint) 489 (*sc->sc_pintr)(sc->sc_parg); 490 } 491 492 493 /* indirect write */ 494 void 495 audioamd_codec_iwrite(struct am7930_softc *sc, int reg, uint8_t val) 496 { 497 struct audioamd_softc *mdsc; 498 499 mdsc = (struct audioamd_softc *)sc; 500 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 501 audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val); 502 } 503 504 void 505 audioamd_codec_iwrite16(struct am7930_softc *sc, int reg, uint16_t val) 506 { 507 struct audioamd_softc *mdsc; 508 509 mdsc = (struct audioamd_softc *)sc; 510 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 511 audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val); 512 audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val>>8); 513 } 514 515 516 /* indirect read */ 517 uint8_t 518 audioamd_codec_iread(struct am7930_softc *sc, int reg) 519 { 520 struct audioamd_softc *mdsc; 521 522 mdsc = (struct audioamd_softc *)sc; 523 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 524 return (audioamd_codec_dread(mdsc, AM7930_DREG_DR)); 525 } 526 527 uint16_t 528 audioamd_codec_iread16(struct am7930_softc *sc, int reg) 529 { 530 struct audioamd_softc *mdsc; 531 uint8_t lo, hi; 532 533 mdsc = (struct audioamd_softc *)sc; 534 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 535 lo = audioamd_codec_dread(mdsc, AM7930_DREG_DR); 536 hi = audioamd_codec_dread(mdsc, AM7930_DREG_DR); 537 return (hi << 8) | lo; 538 } 539 540 /* direct read */ 541 uint8_t 542 audioamd_codec_dread(struct audioamd_softc *sc, int reg) 543 { 544 545 return bus_space_read_1(sc->sc_bt, sc->sc_bh, reg); 546 } 547 548 /* direct write */ 549 void 550 audioamd_codec_dwrite(struct audioamd_softc *sc, int reg, uint8_t val) 551 { 552 553 bus_space_write_1(sc->sc_bt, sc->sc_bh, reg, val); 554 } 555 556 int 557 audioamd_getdev(void *addr, struct audio_device *retp) 558 { 559 560 *retp = audioamd_device; 561 return 0; 562 } 563 564 void 565 audioamd_get_locks(void *opaque, kmutex_t **intr, kmutex_t **thread) 566 { 567 struct audioamd_softc *asc = opaque; 568 struct am7930_softc *sc = &asc->sc_am7930; 569 570 *intr = &sc->sc_intr_lock; 571 *thread = &sc->sc_lock; 572 } 573 574 #endif /* NAUDIO > 0 */ 575
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