audioamd.c revision 1.23
1 /* $NetBSD: audioamd.c,v 1.23 2007/12/03 15:34:20 ad 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 1.23 2007/12/03 15:34:20 ad 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 void audioamd_mainbus_attach(struct device *, struct device *, void *); 104 int audioamd_mainbus_match(struct device *, struct cfdata *, void *); 105 void audioamd_obio_attach(struct device *, struct device *, void *); 106 int audioamd_obio_match(struct device *, struct cfdata *, void *); 107 void audioamd_sbus_attach(struct device *, struct device *, void *); 108 int audioamd_sbus_match(struct device *, struct cfdata *, void *); 109 void audioamd_attach(struct audioamd_softc *, int); 110 111 CFATTACH_DECL(audioamd_mainbus, sizeof(struct audioamd_softc), 112 audioamd_mainbus_match, audioamd_mainbus_attach, NULL, NULL); 113 114 CFATTACH_DECL(audioamd_obio, sizeof(struct audioamd_softc), 115 audioamd_obio_match, audioamd_obio_attach, NULL, NULL); 116 117 CFATTACH_DECL(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 *); 151 152 const struct audio_hw_if sa_hw_if = { 153 am7930_open, 154 am7930_close, 155 0, 156 am7930_query_encoding, 157 am7930_set_params, 158 am7930_round_blocksize, 159 am7930_commit_settings, 160 0, 161 0, 162 audioamd_start_output, /* md */ 163 audioamd_start_input, /* md */ 164 am7930_halt_output, 165 am7930_halt_input, 166 0, 167 audioamd_getdev, 168 0, 169 am7930_set_port, 170 am7930_get_port, 171 am7930_query_devinfo, 172 0, 173 0, 174 0, 175 0, 176 am7930_get_props, 177 0, 178 0, 179 0, 180 }; 181 182 struct audio_device audioamd_device = { 183 "am7930", 184 "x", 185 "audioamd" 186 }; 187 188 189 int 190 audioamd_mainbus_match(struct device *parent, struct cfdata *cf, void *aux) 191 { 192 struct mainbus_attach_args *ma; 193 194 ma = aux; 195 if (CPU_ISSUN4) 196 return 0; 197 return strcmp(AUDIO_ROM_NAME, ma->ma_name) == 0; 198 } 199 200 int 201 audioamd_obio_match(struct device *parent, struct cfdata *cf, void *aux) 202 { 203 union obio_attach_args *uoba; 204 205 uoba = aux; 206 if (uoba->uoba_isobio4 != 0) 207 return 0; 208 209 return strcmp("audio", uoba->uoba_sbus.sa_name) == 0; 210 } 211 212 int 213 audioamd_sbus_match(struct device *parent, struct cfdata *cf, void *aux) 214 { 215 struct sbus_attach_args *sa; 216 217 sa = aux; 218 return strcmp(AUDIO_ROM_NAME, sa->sa_name) == 0; 219 } 220 221 void 222 audioamd_mainbus_attach(struct device *parent, struct device *self, void *aux) 223 { 224 struct mainbus_attach_args *ma; 225 struct audioamd_softc *sc; 226 bus_space_handle_t bh; 227 228 ma = aux; 229 sc = (struct audioamd_softc *)self; 230 sc->sc_bt = ma->ma_bustag; 231 232 if (bus_space_map( 233 ma->ma_bustag, 234 ma->ma_paddr, 235 AM7930_DREG_SIZE, 236 BUS_SPACE_MAP_LINEAR, 237 &bh) != 0) { 238 printf("%s: cannot map registers\n", self->dv_xname); 239 return; 240 } 241 sc->sc_bh = bh; 242 audioamd_attach(sc, ma->ma_pri); 243 } 244 245 void 246 audioamd_obio_attach(struct device *parent, struct device *self, void *aux) 247 { 248 union obio_attach_args *uoba; 249 struct sbus_attach_args *sa; 250 struct audioamd_softc *sc; 251 bus_space_handle_t bh; 252 253 uoba = aux; 254 sa = &uoba->uoba_sbus; 255 sc = (struct audioamd_softc *)self; 256 sc->sc_bt = sa->sa_bustag; 257 258 if (sbus_bus_map(sa->sa_bustag, 259 sa->sa_slot, sa->sa_offset, 260 AM7930_DREG_SIZE, 261 0, &bh) != 0) { 262 printf("%s: cannot map registers\n", self->dv_xname); 263 return; 264 } 265 sc->sc_bh = bh; 266 audioamd_attach(sc, sa->sa_pri); 267 } 268 269 void 270 audioamd_sbus_attach(struct device *parent, struct device *self, void *aux) 271 { 272 struct sbus_attach_args *sa; 273 struct audioamd_softc *sc; 274 bus_space_handle_t bh; 275 276 sa = aux; 277 sc = (struct audioamd_softc *)self; 278 sc->sc_bt = sa->sa_bustag; 279 280 if (sbus_bus_map(sa->sa_bustag, 281 sa->sa_slot, sa->sa_offset, 282 AM7930_DREG_SIZE, 283 0, &bh) != 0) { 284 printf("%s: cannot map registers\n", self->dv_xname); 285 return; 286 } 287 sc->sc_bh = bh; 288 audioamd_attach(sc, sa->sa_pri); 289 } 290 291 void 292 audioamd_attach(struct audioamd_softc *sc, int pri) 293 { 294 295 /* 296 * Set up glue for MI code early; we use some of it here. 297 */ 298 sc->sc_am7930.sc_glue = &audioamd_glue; 299 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_HIGH); 300 301 am7930_init(&sc->sc_am7930, AUDIOAMD_POLL_MODE); 302 303 auiop = &sc->sc_au; 304 305 /* Copy bus tag & handle for use by am7930_trap */ 306 sc->sc_au.au_bt = sc->sc_bt; 307 sc->sc_au.au_bh = sc->sc_bh; 308 (void)bus_intr_establish2(sc->sc_bt, pri, IPL_HIGH, 309 am7930hwintr, sc, amd7930_trap); 310 311 sc->sc_sicookie = softint_establish(SOFTINT_SERIAL, am7930swintr, sc); 312 if (sc->sc_sicookie == NULL) { 313 printf("\n%s: cannot establish software interrupt\n", 314 sc->sc_am7930.sc_dev.dv_xname); 315 return; 316 } 317 318 printf(" softpri %d\n", IPL_SOFTAUDIO); 319 320 321 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 322 sc->sc_am7930.sc_dev.dv_xname, "intr"); 323 324 audio_attach_mi(&sa_hw_if, sc, &sc->sc_am7930.sc_dev); 325 } 326 327 328 void 329 audioamd_onopen(struct am7930_softc *sc) 330 { 331 struct audioamd_softc *mdsc; 332 333 mdsc = (struct audioamd_softc *)sc; 334 335 /* reset pdma state */ 336 mutex_spin_enter(&mdsc->sc_lock); 337 mdsc->sc_rintr = 0; 338 mdsc->sc_rarg = 0; 339 mdsc->sc_pintr = 0; 340 mdsc->sc_parg = 0; 341 mdsc->sc_au.au_rdata = 0; 342 mdsc->sc_au.au_pdata = 0; 343 mutex_spin_exit(&mdsc->sc_lock); 344 } 345 346 347 void 348 audioamd_onclose(struct am7930_softc *sc) 349 { 350 /* On sparc, just do the chipset-level halt. */ 351 am7930_halt_input(sc); 352 am7930_halt_output(sc); 353 } 354 355 int 356 audioamd_start_output(void *addr, void *p, int cc, 357 void (*intr)(void *), void *arg) 358 { 359 struct audioamd_softc *sc; 360 361 DPRINTFN(1, ("sa_start_output: cc=%d %p (%p)\n", cc, intr, arg)); 362 sc = addr; 363 364 mutex_spin_enter(&sc->sc_lock); 365 audioamd_codec_iwrite(&sc->sc_am7930, 366 AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE); 367 sc->sc_pintr = intr; 368 sc->sc_parg = arg; 369 sc->sc_au.au_pdata = p; 370 sc->sc_au.au_pend = (char *)p + cc - 1; 371 mutex_spin_exit(&sc->sc_lock); 372 373 DPRINTF(("sa_start_output: started intrs.\n")); 374 return(0); 375 } 376 377 int 378 audioamd_start_input(void *addr, void *p, int cc, 379 void (*intr)(void *), void *arg) 380 { 381 struct audioamd_softc *sc; 382 383 DPRINTFN(1, ("sa_start_input: cc=%d %p (%p)\n", cc, intr, arg)); 384 sc = addr; 385 386 mutex_spin_enter(&sc->sc_lock); 387 audioamd_codec_iwrite(&sc->sc_am7930, 388 AM7930_IREG_INIT, AM7930_INIT_PMS_ACTIVE); 389 sc->sc_rintr = intr; 390 sc->sc_rarg = arg; 391 sc->sc_au.au_rdata = p; 392 sc->sc_au.au_rend = (char *)p + cc -1; 393 mutex_spin_exit(&sc->sc_lock); 394 395 DPRINTF(("sa_start_input: started intrs.\n")); 396 397 return(0); 398 } 399 400 401 /* 402 * Pseudo-DMA support: either C or locore assember. 403 */ 404 405 int 406 am7930hwintr(void *v) 407 { 408 struct audioamd_softc *sc; 409 struct auio *au; 410 uint8_t *d, *e; 411 int k; 412 413 sc = v; 414 au = &sc->sc_au; 415 mutex_spin_enter(&sc->sc_lock); 416 417 /* clear interrupt */ 418 k = audioamd_codec_dread(sc, AM7930_DREG_IR); 419 if ((k & (AM7930_IR_DTTHRSH|AM7930_IR_DRTHRSH|AM7930_IR_DSRI| 420 AM7930_IR_DERI|AM7930_IR_BBUFF)) == 0) { 421 mutex_spin_exit(&sc->sc_lock); 422 return 0; 423 } 424 425 /* receive incoming data */ 426 d = au->au_rdata; 427 e = au->au_rend; 428 if (d && d <= e) { 429 *d = audioamd_codec_dread(sc, AM7930_DREG_BBRB); 430 au->au_rdata++; 431 if (d == e) { 432 DPRINTFN(1, ("am7930hwintr: swintr(r) requested")); 433 softint_schedule(sc->sc_sicookie); 434 } 435 } 436 437 /* send outgoing data */ 438 d = au->au_pdata; 439 e = au->au_pend; 440 if (d && d <= e) { 441 audioamd_codec_dwrite(sc, AM7930_DREG_BBTB, *d); 442 au->au_pdata++; 443 if (d == e) { 444 DPRINTFN(1, ("am7930hwintr: swintr(p) requested")); 445 softint_schedule(sc->sc_sicookie); 446 } 447 } 448 449 au->au_intrcnt.ev_count++; 450 mutex_spin_exit(&sc->sc_lock); 451 452 return 1; 453 } 454 455 void 456 am7930swintr(void *sc0) 457 { 458 struct audioamd_softc *sc; 459 struct auio *au; 460 bool pint; 461 462 sc = sc0; 463 DPRINTFN(1, ("audiointr: sc=%p\n", sc);); 464 465 au = &sc->sc_au; 466 mutex_spin_enter(&sc->sc_lock); 467 if (au->au_rdata > au->au_rend && sc->sc_rintr != NULL) { 468 mutex_spin_exit(&sc->sc_lock); 469 (*sc->sc_rintr)(sc->sc_rarg); 470 mutex_spin_enter(&sc->sc_lock); 471 } 472 pint = (au->au_pdata > au->au_pend && sc->sc_pintr != NULL); 473 mutex_spin_exit(&sc->sc_lock); 474 if (pint) 475 (*sc->sc_pintr)(sc->sc_parg); 476 } 477 478 479 /* indirect write */ 480 void 481 audioamd_codec_iwrite(struct am7930_softc *sc, int reg, uint8_t val) 482 { 483 struct audioamd_softc *mdsc; 484 485 mdsc = (struct audioamd_softc *)sc; 486 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 487 audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val); 488 } 489 490 void 491 audioamd_codec_iwrite16(struct am7930_softc *sc, int reg, uint16_t val) 492 { 493 struct audioamd_softc *mdsc; 494 495 mdsc = (struct audioamd_softc *)sc; 496 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 497 audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val); 498 audioamd_codec_dwrite(mdsc, AM7930_DREG_DR, val>>8); 499 } 500 501 502 /* indirect read */ 503 uint8_t 504 audioamd_codec_iread(struct am7930_softc *sc, int reg) 505 { 506 struct audioamd_softc *mdsc; 507 508 mdsc = (struct audioamd_softc *)sc; 509 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 510 return (audioamd_codec_dread(mdsc, AM7930_DREG_DR)); 511 } 512 513 uint16_t 514 audioamd_codec_iread16(struct am7930_softc *sc, int reg) 515 { 516 struct audioamd_softc *mdsc; 517 uint8_t lo, hi; 518 519 mdsc = (struct audioamd_softc *)sc; 520 audioamd_codec_dwrite(mdsc, AM7930_DREG_CR, reg); 521 lo = audioamd_codec_dread(mdsc, AM7930_DREG_DR); 522 hi = audioamd_codec_dread(mdsc, AM7930_DREG_DR); 523 return (hi << 8) | lo; 524 } 525 526 /* direct read */ 527 uint8_t 528 audioamd_codec_dread(struct audioamd_softc *sc, int reg) 529 { 530 531 return bus_space_read_1(sc->sc_bt, sc->sc_bh, reg); 532 } 533 534 /* direct write */ 535 void 536 audioamd_codec_dwrite(struct audioamd_softc *sc, int reg, uint8_t val) 537 { 538 539 bus_space_write_1(sc->sc_bt, sc->sc_bh, reg, val); 540 } 541 542 int 543 audioamd_getdev(void *addr, struct audio_device *retp) 544 { 545 546 *retp = audioamd_device; 547 return 0; 548 } 549 550 #endif /* NAUDIO > 0 */ 551
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