audioamd.c revision 1.27
1 /* $NetBSD: audioamd.c,v 1.27 2011/11/23 23:07:30 jmcneill 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 1.27 2011/11/23 23:07:30 jmcneill 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 audioamd_get_locks, 182 }; 183 184 struct audio_device audioamd_device = { 185 "am7930", 186 "x", 187 "audioamd" 188 }; 189 190 191 int 192 audioamd_mainbus_match(device_t parent, cfdata_t cf, void *aux) 193 { 194 struct mainbus_attach_args *ma; 195 196 ma = aux; 197 if (CPU_ISSUN4) 198 return 0; 199 return strcmp(AUDIO_ROM_NAME, ma->ma_name) == 0; 200 } 201 202 int 203 audioamd_obio_match(device_t parent, cfdata_t cf, void *aux) 204 { 205 union obio_attach_args *uoba; 206 207 uoba = aux; 208 if (uoba->uoba_isobio4 != 0) 209 return 0; 210 211 return strcmp("audio", uoba->uoba_sbus.sa_name) == 0; 212 } 213 214 int 215 audioamd_sbus_match(device_t parent, cfdata_t cf, void *aux) 216 { 217 struct sbus_attach_args *sa; 218 219 sa = aux; 220 return strcmp(AUDIO_ROM_NAME, sa->sa_name) == 0; 221 } 222 223 void 224 audioamd_mainbus_attach(device_t parent, device_t self, void *aux) 225 { 226 struct mainbus_attach_args *ma; 227 struct audioamd_softc *sc; 228 bus_space_handle_t bh; 229 230 ma = aux; 231 sc = device_private(self); 232 sc->sc_am7930.sc_dev = self; 233 sc->sc_bt = ma->ma_bustag; 234 235 if (bus_space_map( 236 ma->ma_bustag, 237 ma->ma_paddr, 238 AM7930_DREG_SIZE, 239 BUS_SPACE_MAP_LINEAR, 240 &bh) != 0) { 241 printf("%s: cannot map registers\n", device_xname(self)); 242 return; 243 } 244 sc->sc_bh = bh; 245 audioamd_attach(sc, ma->ma_pri); 246 } 247 248 void 249 audioamd_obio_attach(device_t parent, device_t self, void *aux) 250 { 251 union obio_attach_args *uoba; 252 struct sbus_attach_args *sa; 253 struct audioamd_softc *sc; 254 bus_space_handle_t bh; 255 256 uoba = aux; 257 sa = &uoba->uoba_sbus; 258 sc = device_private(self); 259 sc->sc_am7930.sc_dev = self; 260 sc->sc_bt = sa->sa_bustag; 261 262 if (sbus_bus_map(sa->sa_bustag, 263 sa->sa_slot, sa->sa_offset, 264 AM7930_DREG_SIZE, 265 0, &bh) != 0) { 266 printf("%s: cannot map registers\n", device_xname(self)); 267 return; 268 } 269 sc->sc_bh = bh; 270 audioamd_attach(sc, sa->sa_pri); 271 } 272 273 void 274 audioamd_sbus_attach(device_t parent, device_t self, void *aux) 275 { 276 struct sbus_attach_args *sa; 277 struct audioamd_softc *sc; 278 bus_space_handle_t bh; 279 280 sa = aux; 281 sc = device_private(self); 282 sc->sc_am7930.sc_dev = self; 283 sc->sc_bt = sa->sa_bustag; 284 285 if (sbus_bus_map(sa->sa_bustag, 286 sa->sa_slot, sa->sa_offset, 287 AM7930_DREG_SIZE, 288 0, &bh) != 0) { 289 printf("%s: cannot map registers\n", device_xname(self)); 290 return; 291 } 292 sc->sc_bh = bh; 293 audioamd_attach(sc, sa->sa_pri); 294 } 295 296 void 297 audioamd_attach(struct audioamd_softc *sc, int pri) 298 { 299 device_t self; 300 301 /* 302 * Set up glue for MI code early; we use some of it here. 303 */ 304 self = sc->sc_am7930.sc_dev; 305 sc->sc_am7930.sc_glue = &audioamd_glue; 306 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_HIGH); 307 308 am7930_init(&sc->sc_am7930, AUDIOAMD_POLL_MODE); 309 310 auiop = &sc->sc_au; 311 312 /* Copy bus tag & handle for use by am7930_trap */ 313 sc->sc_au.au_bt = sc->sc_bt; 314 sc->sc_au.au_bh = sc->sc_bh; 315 (void)bus_intr_establish2(sc->sc_bt, pri, IPL_HIGH, 316 am7930hwintr, sc, 317 #ifdef notyet /* XXX amd7930intr.s needs to be fixed for MI softint(9) */ 318 amd7930_trap 319 #else 320 NULL 321 #endif 322 ); 323 324 sc->sc_sicookie = softint_establish(SOFTINT_SERIAL, am7930swintr, sc); 325 if (sc->sc_sicookie == NULL) { 326 printf("\n%s: cannot establish software interrupt\n", 327 device_xname(self)); 328 return; 329 } 330 331 printf(" softpri %d\n", IPL_SOFTAUDIO); 332 333 334 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 335 device_xname(self), "intr"); 336 337 audio_attach_mi(&sa_hw_if, sc, self); 338 } 339 340 341 void 342 audioamd_onopen(struct am7930_softc *sc) 343 { 344 struct audioamd_softc *mdsc; 345 346 mdsc = (struct audioamd_softc *)sc; 347 348 /* reset pdma state */ 349 mutex_spin_enter(&mdsc->sc_lock); 350 mdsc->sc_rintr = 0; 351 mdsc->sc_rarg = 0; 352 mdsc->sc_pintr = 0; 353 mdsc->sc_parg = 0; 354 mdsc->sc_au.au_rdata = 0; 355 mdsc->sc_au.au_pdata = 0; 356 mutex_spin_exit(&mdsc->sc_lock); 357 } 358 359 360 void 361 audioamd_onclose(struct am7930_softc *sc) 362 { 363 /* On sparc, just do the chipset-level halt. */ 364 am7930_halt_input(sc); 365 am7930_halt_output(sc); 366 } 367 368 int 369 audioamd_start_output(void *addr, void *p, int cc, 370 void (*intr)(void *), void *arg) 371 { 372 struct audioamd_softc *sc; 373 374 DPRINTFN(1, ("sa_start_output: cc=%d %p (%p)\n", cc, intr, arg)); 375 sc = addr; 376 377 mutex_spin_enter(&sc->sc_lock); 378 audioamd_codec_iwrite(&sc->sc_am7930, 379 AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE); 380 sc->sc_pintr = intr; 381 sc->sc_parg = arg; 382 sc->sc_au.au_pdata = p; 383 sc->sc_au.au_pend = (char *)p + cc - 1; 384 mutex_spin_exit(&sc->sc_lock); 385 386 DPRINTF(("sa_start_output: started intrs.\n")); 387 return(0); 388 } 389 390 int 391 audioamd_start_input(void *addr, void *p, int cc, 392 void (*intr)(void *), void *arg) 393 { 394 struct audioamd_softc *sc; 395 396 DPRINTFN(1, ("sa_start_input: cc=%d %p (%p)\n", cc, intr, arg)); 397 sc = addr; 398 399 mutex_spin_enter(&sc->sc_lock); 400 audioamd_codec_iwrite(&sc->sc_am7930, 401 AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE); 402 sc->sc_rintr = intr; 403 sc->sc_rarg = arg; 404 sc->sc_au.au_rdata = p; 405 sc->sc_au.au_rend = (char *)p + cc -1; 406 mutex_spin_exit(&sc->sc_lock); 407 408 DPRINTF(("sa_start_input: started intrs.\n")); 409 410 return(0); 411 } 412 413 414 /* 415 * Pseudo-DMA support: either C or locore assember. 416 */ 417 418 int 419 am7930hwintr(void *v) 420 { 421 struct audioamd_softc *sc; 422 struct auio *au; 423 uint8_t *d, *e; 424 int k; 425 426 sc = v; 427 au = &sc->sc_au; 428 mutex_spin_enter(&sc->sc_lock); 429 430 /* clear interrupt */ 431 k = audioamd_codec_dread(sc, AM7930_DREG_IR); 432 if ((k & (AM7930_IR_DTTHRSH|AM7930_IR_DRTHRSH|AM7930_IR_DSRI| 433 AM7930_IR_DERI|AM7930_IR_BBUFF)) == 0) { 434 mutex_spin_exit(&sc->sc_lock); 435 return 0; 436 } 437 438 /* receive incoming data */ 439 d = au->au_rdata; 440 e = au->au_rend; 441 if (d && d <= e) { 442 *d = audioamd_codec_dread(sc, AM7930_DREG_BBRB); 443 au->au_rdata++; 444 if (d == e) { 445 DPRINTFN(1, ("am7930hwintr: swintr(r) requested")); 446 softint_schedule(sc->sc_sicookie); 447 } 448 } 449 450 /* send outgoing data */ 451 d = au->au_pdata; 452 e = au->au_pend; 453 if (d && d <= e) { 454 audioamd_codec_dwrite(sc, AM7930_DREG_BBTB, *d); 455 au->au_pdata++; 456 if (d == e) { 457 DPRINTFN(1, ("am7930hwintr: swintr(p) requested")); 458 softint_schedule(sc->sc_sicookie); 459 } 460 } 461 462 au->au_intrcnt.ev_count++; 463 mutex_spin_exit(&sc->sc_lock); 464 465 return 1; 466 } 467 468 void 469 am7930swintr(void *sc0) 470 { 471 struct audioamd_softc *sc; 472 struct auio *au; 473 bool pint; 474 475 sc = sc0; 476 DPRINTFN(1, ("audiointr: sc=%p\n", sc);); 477 478 au = &sc->sc_au; 479 480 mutex_spin_enter(&sc->sc_am7930.sc_lock); 481 if (au->au_rdata > au->au_rend && sc->sc_rintr != NULL) { 482 (*sc->sc_rintr)(sc->sc_rarg); 483 } 484 pint = (au->au_pdata > au->au_pend && sc->sc_pintr != NULL); 485 if (pint) 486 (*sc->sc_pintr)(sc->sc_parg); 487 488 mutex_spin_exit(&sc->sc_am7930.sc_lock); 489 } 490 491 492 /* indirect write */ 493 void 494 audioamd_codec_iwrite(struct am7930_softc *sc, int reg, uint8_t val) 495 { 496 struct audioamd_softc *mdsc; 497 498 mdsc = (struct audioamd_softc *)sc; 499 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 500 audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val); 501 } 502 503 void 504 audioamd_codec_iwrite16(struct am7930_softc *sc, int reg, uint16_t val) 505 { 506 struct audioamd_softc *mdsc; 507 508 mdsc = (struct audioamd_softc *)sc; 509 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 510 audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val); 511 audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val>>8); 512 } 513 514 515 /* indirect read */ 516 uint8_t 517 audioamd_codec_iread(struct am7930_softc *sc, int reg) 518 { 519 struct audioamd_softc *mdsc; 520 521 mdsc = (struct audioamd_softc *)sc; 522 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 523 return (audioamd_codec_dread(mdsc, AM7930_DREG_DR)); 524 } 525 526 uint16_t 527 audioamd_codec_iread16(struct am7930_softc *sc, int reg) 528 { 529 struct audioamd_softc *mdsc; 530 uint8_t lo, hi; 531 532 mdsc = (struct audioamd_softc *)sc; 533 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 534 lo = audioamd_codec_dread(mdsc, AM7930_DREG_DR); 535 hi = audioamd_codec_dread(mdsc, AM7930_DREG_DR); 536 return (hi << 8) | lo; 537 } 538 539 /* direct read */ 540 uint8_t 541 audioamd_codec_dread(struct audioamd_softc *sc, int reg) 542 { 543 544 return bus_space_read_1(sc->sc_bt, sc->sc_bh, reg); 545 } 546 547 /* direct write */ 548 void 549 audioamd_codec_dwrite(struct audioamd_softc *sc, int reg, uint8_t val) 550 { 551 552 bus_space_write_1(sc->sc_bt, sc->sc_bh, reg, val); 553 } 554 555 int 556 audioamd_getdev(void *addr, struct audio_device *retp) 557 { 558 559 *retp = audioamd_device; 560 return 0; 561 } 562 563 void 564 audioamd_get_locks(void *opaque, kmutex_t **intr, kmutex_t **thread) 565 { 566 struct audioamd_softc *asc = opaque; 567 struct am7930_softc *sc = &asc->sc_am7930; 568 569 *intr = &sc->sc_intr_lock; 570 *thread = &sc->sc_lock; 571 } 572 573 #endif /* NAUDIO > 0 */ 574
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