vidcaudio.c revision 1.41
1 /* $NetBSD: vidcaudio.c,v 1.41 2005/01/10 22:01:36 kent Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Melvin Tang-Richardson 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the RiscBSD team. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 2003 Ben Harris 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. The name of the author may not be used to endorse or promote products 45 * derived from this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59 /* 60 * audio driver for the RiscPC 8/16 bit sound 61 * 62 * Interfaces with the NetBSD generic audio driver to provide SUN 63 * /dev/audio (partial) compatibility. 64 */ 65 66 #include <sys/param.h> /* proc.h */ 67 68 __KERNEL_RCSID(0, "$NetBSD: vidcaudio.c,v 1.41 2005/01/10 22:01:36 kent Exp $"); 69 70 #include <sys/audioio.h> 71 #include <sys/conf.h> /* autoconfig functions */ 72 #include <sys/device.h> /* device calls */ 73 #include <sys/errno.h> 74 #include <sys/malloc.h> 75 #include <sys/proc.h> /* device calls */ 76 #include <sys/systm.h> 77 78 #include <uvm/uvm_extern.h> 79 80 #include <dev/audio_if.h> 81 #include <dev/audiobellvar.h> 82 #include <dev/auconv.h> 83 #include <dev/mulaw.h> 84 85 #include <machine/intr.h> 86 #include <machine/machdep.h> 87 #include <arm/arm32/katelib.h> 88 89 #include <arm/iomd/vidcaudiovar.h> 90 #include <arm/iomd/iomdreg.h> 91 #include <arm/iomd/iomdvar.h> 92 #include <arm/iomd/vidc.h> 93 #include <arm/mainbus/mainbus.h> 94 95 #include "pckbd.h" 96 #if NPCKBD > 0 97 #include <dev/pckbport/pckbdvar.h> 98 #endif 99 100 #include "rpckbd.h" 101 #if NRPCKBD > 0 102 #include <arm/iomd/rpckbdvar.h> 103 #endif 104 105 #include "vt.h" 106 #if NVT > 0 107 extern void vt_hookup_bell(void (*)(void *, u_int, u_int, u_int, int), void *); 108 #endif 109 110 extern int *vidc_base; 111 112 #ifdef VIDCAUDIO_DEBUG 113 #define DPRINTF(x) printf x 114 #else 115 #define DPRINTF(x) 116 #endif 117 118 struct vidcaudio_softc { 119 struct device sc_dev; 120 121 irqhandler_t sc_ih; 122 int sc_dma_intr; 123 124 int sc_is16bit; 125 126 size_t sc_pblksize; 127 vm_offset_t sc_poffset; 128 vm_offset_t sc_pbufsize; 129 paddr_t *sc_ppages; 130 void (*sc_pintr)(void *); 131 void *sc_parg; 132 int sc_pcountdown; 133 }; 134 135 static int vidcaudio_probe(struct device *, struct cfdata *, void *); 136 static void vidcaudio_attach(struct device *, struct device *, void *); 137 static void vidcaudio_close(void *); 138 139 static int vidcaudio_intr(void *); 140 static void vidcaudio_rate(int); 141 static void vidcaudio_ctrl(int); 142 static void vidcaudio_stereo(int, int); 143 static stream_filter_factory_t mulaw_to_vidc; 144 static stream_filter_factory_t mulaw_to_vidc_stereo; 145 static int mulaw_to_vidc_fetch_to(stream_fetcher_t *, audio_stream_t *, int); 146 static int mulaw_to_vidc_stereo_fetch_to(stream_fetcher_t *, 147 audio_stream_t *, int); 148 149 CFATTACH_DECL(vidcaudio, sizeof(struct vidcaudio_softc), 150 vidcaudio_probe, vidcaudio_attach, NULL, NULL); 151 152 static int vidcaudio_query_encoding(void *, struct audio_encoding *); 153 static int vidcaudio_set_params(void *, int, int, audio_params_t *, 154 audio_params_t *, stream_filter_list_t *, stream_filter_list_t *); 155 static int vidcaudio_round_blocksize(void *, int, int, const audio_params_t *); 156 static int vidcaudio_trigger_output(void *, void *, void *, int, 157 void (*)(void *), void *, const audio_params_t *); 158 static int vidcaudio_trigger_input(void *, void *, void *, int, 159 void (*)(void *), void *, const audio_params_t *); 160 static int vidcaudio_halt_output(void *); 161 static int vidcaudio_halt_input(void *); 162 static int vidcaudio_getdev(void *, struct audio_device *); 163 static int vidcaudio_set_port(void *, mixer_ctrl_t *); 164 static int vidcaudio_get_port(void *, mixer_ctrl_t *); 165 static int vidcaudio_query_devinfo(void *, mixer_devinfo_t *); 166 static int vidcaudio_get_props(void *); 167 168 static struct audio_device vidcaudio_device = { 169 "ARM VIDC", 170 "", 171 "vidcaudio" 172 }; 173 174 static const struct audio_hw_if vidcaudio_hw_if = { 175 NULL, /* open */ 176 vidcaudio_close, 177 NULL, 178 vidcaudio_query_encoding, 179 vidcaudio_set_params, 180 vidcaudio_round_blocksize, 181 NULL, 182 NULL, 183 NULL, 184 NULL, 185 NULL, 186 vidcaudio_halt_output, 187 vidcaudio_halt_input, 188 NULL, 189 vidcaudio_getdev, 190 NULL, 191 vidcaudio_set_port, 192 vidcaudio_get_port, 193 vidcaudio_query_devinfo, 194 NULL, 195 NULL, 196 NULL, 197 NULL, 198 vidcaudio_get_props, 199 vidcaudio_trigger_output, 200 vidcaudio_trigger_input, 201 NULL, 202 }; 203 204 static int 205 vidcaudio_probe(struct device *parent, struct cfdata *cf, void *aux) 206 { 207 int id; 208 209 id = IOMD_ID; 210 211 /* So far I only know about this IOMD */ 212 switch (id) { 213 case RPC600_IOMD_ID: 214 case ARM7500_IOC_ID: 215 case ARM7500FE_IOC_ID: 216 return 1; 217 default: 218 aprint_error("vidcaudio: Unknown IOMD id=%04x", id); 219 return 0; 220 } 221 } 222 223 224 static void 225 vidcaudio_attach(struct device *parent, struct device *self, void *aux) 226 { 227 struct vidcaudio_softc *sc = (void *)self; 228 struct device *beepdev; 229 230 switch (IOMD_ID) { 231 #ifndef EB7500ATX 232 case RPC600_IOMD_ID: 233 sc->sc_is16bit = (cmos_read(0xc4) >> 5) & 1; 234 sc->sc_dma_intr = IRQ_DMASCH0; 235 break; 236 #endif 237 case ARM7500_IOC_ID: 238 case ARM7500FE_IOC_ID: 239 sc->sc_is16bit = TRUE; 240 sc->sc_dma_intr = IRQ_SDMA; 241 break; 242 default: 243 aprint_error(": strange IOMD\n"); 244 return; 245 } 246 247 if (sc->sc_is16bit) 248 aprint_normal(": 16-bit external DAC\n"); 249 else 250 aprint_normal(": 8-bit internal DAC\n"); 251 252 /* Install the irq handler for the DMA interrupt */ 253 sc->sc_ih.ih_func = vidcaudio_intr; 254 sc->sc_ih.ih_arg = sc; 255 sc->sc_ih.ih_level = IPL_AUDIO; 256 sc->sc_ih.ih_name = self->dv_xname; 257 258 if (irq_claim(sc->sc_dma_intr, &sc->sc_ih) != 0) { 259 aprint_error("%s: couldn't claim IRQ %d\n", 260 self->dv_xname, sc->sc_dma_intr); 261 return; 262 } 263 264 disable_irq(sc->sc_dma_intr); 265 266 beepdev = audio_attach_mi(&vidcaudio_hw_if, sc, self); 267 #if NPCKBD > 0 268 pckbd_hookup_bell(audiobell, beepdev); 269 #endif 270 #if NRPCKBD > 0 271 rpckbd_hookup_bell(audiobell, beepdev); 272 #endif 273 #if NVT > 0 274 vt_hookup_bell(audiobell, beepdev); 275 #endif 276 } 277 278 static void 279 vidcaudio_close(void *addr) 280 { 281 struct vidcaudio_softc *sc = addr; 282 283 DPRINTF(("DEBUG: vidcaudio_close called\n")); 284 /* 285 * We do this here rather than in vidcaudio_halt_output() 286 * because the latter can be called from interrupt context 287 * (audio_pint()->audio_clear()->vidcaudio_halt_output()). 288 */ 289 if (sc->sc_ppages != NULL) { 290 free(sc->sc_ppages, M_DEVBUF); 291 sc->sc_ppages = NULL; 292 } 293 } 294 295 /* 296 * Interface to the generic audio driver 297 */ 298 299 static int 300 vidcaudio_query_encoding(void *addr, struct audio_encoding *fp) 301 { 302 struct vidcaudio_softc *sc = addr; 303 304 switch (fp->index) { 305 case 0: 306 strcpy(fp->name, AudioEmulaw); 307 fp->encoding = AUDIO_ENCODING_ULAW; 308 fp->precision = 8; 309 fp->flags = AUDIO_ENCODINGFLAG_EMULATED; 310 break; 311 312 case 1: 313 if (sc->sc_is16bit) { 314 strcpy(fp->name, AudioEslinear_le); 315 fp->encoding = AUDIO_ENCODING_SLINEAR_LE; 316 fp->precision = 16; 317 fp->flags = 0; 318 break; 319 } 320 /* FALLTHROUGH */ 321 default: 322 return EINVAL; 323 } 324 return 0; 325 } 326 327 #define MULAW_TO_VIDC(m) (~((m) << 1 | (m) >> 7)) 328 329 static stream_filter_t * 330 mulaw_to_vidc(struct audio_softc *sc, const audio_params_t *from, 331 const audio_params_t *to) 332 { 333 return auconv_nocontext_filter_factory(mulaw_to_vidc_fetch_to); 334 } 335 336 static int 337 mulaw_to_vidc_fetch_to(stream_fetcher_t *self, audio_stream_t *dst, int max_used) 338 { 339 stream_filter_t *this; 340 int m, err; 341 342 this = (stream_filter_t *)self; 343 if ((err = this->prev->fetch_to(this->prev, this->src, max_used))) 344 return err; 345 m = dst->end - dst->start; 346 m = min(m, max_used); 347 FILTER_LOOP_PROLOGUE(this->src, 1, dst, 1, m) { 348 *d = MULAW_TO_VIDC(*s); 349 } FILTER_LOOP_EPILOGUE(this->src, dst); 350 return 0; 351 } 352 353 static stream_filter_t * 354 mulaw_to_vidc_stereo(struct audio_softc *sc, const audio_params_t *from, 355 const audio_params_t *to) 356 { 357 return auconv_nocontext_filter_factory(mulaw_to_vidc_stereo_fetch_to); 358 } 359 360 static int 361 mulaw_to_vidc_stereo_fetch_to(stream_fetcher_t *self, audio_stream_t *dst, 362 int max_used) 363 { 364 stream_filter_t *this; 365 int m, err; 366 367 this = (stream_filter_t *)self; 368 max_used = (max_used + 1) & ~1; 369 if ((err = this->prev->fetch_to(this->prev, this->src, max_used / 2))) 370 return err; 371 m = (dst->end - dst->start) & ~1; 372 m = min(m, max_used); 373 FILTER_LOOP_PROLOGUE(this->src, 1, dst, 2, m) { 374 d[0] = d[1] = MULAW_TO_VIDC(*s); 375 } FILTER_LOOP_EPILOGUE(this->src, dst); 376 return 0; 377 } 378 379 static int 380 vidcaudio_set_params(void *addr, int setmode, int usemode, 381 audio_params_t *p, audio_params_t *r, 382 stream_filter_list_t *pfil, stream_filter_list_t *rfil) 383 { 384 audio_params_t hw; 385 struct vidcaudio_softc *sc = addr; 386 int sample_period, ch; 387 388 if ((setmode & AUMODE_PLAY) == 0) 389 return 0; 390 391 if (sc->sc_is16bit) { 392 /* ARM7500ish, 16-bit, two-channel */ 393 hw = *p; 394 if (p->encoding == AUDIO_ENCODING_ULAW && p->precision == 8) { 395 hw.encoding = AUDIO_ENCODING_SLINEAR_LE; 396 hw.precision = hw.validbits = 16; 397 pfil->append(pfil, mulaw_to_linear16, &hw); 398 } else if (p->encoding != AUDIO_ENCODING_SLINEAR_LE || 399 p->precision != 16) 400 return EINVAL; 401 sample_period = 705600 / 4 / p->sample_rate; 402 if (sample_period < 3) sample_period = 3; 403 vidcaudio_rate(sample_period - 2); 404 vidcaudio_ctrl(SCR_SERIAL); 405 hw.sample_rate = 705600 / 4 / sample_period; 406 hw.channels = 2; 407 pfil->append(pfil, aurateconv, &hw); 408 } else { 409 /* VIDC20ish, u-law, 8-channel */ 410 if (p->encoding != AUDIO_ENCODING_ULAW || p->precision != 8) 411 return EINVAL; 412 /* 413 * We always use two hardware channels, because using 414 * one at 8kHz gives a nasty whining sound from the 415 * speaker. The aurateconv mechanism doesn't support 416 * ulaw, so we do the channel duplication ourselves, 417 * and don't try to do rate conversion. 418 */ 419 sample_period = 1000000 / 2 / p->sample_rate; 420 if (sample_period < 3) sample_period = 3; 421 p->sample_rate = 1000000 / 2 / sample_period; 422 hw = *p; 423 hw.encoding = AUDIO_ENCODING_NONE; 424 hw.precision = 8; 425 vidcaudio_rate(sample_period - 2); 426 vidcaudio_ctrl(SCR_SDAC | SCR_CLKSEL); 427 if (p->channels == 1) { 428 pfil->append(pfil, mulaw_to_vidc_stereo, &hw); 429 for (ch = 0; ch < 8; ch++) 430 vidcaudio_stereo(ch, SIR_CENTRE); 431 } else { 432 pfil->append(pfil, mulaw_to_vidc, &hw); 433 for (ch = 0; ch < 8; ch += 2) 434 vidcaudio_stereo(ch, SIR_LEFT_100); 435 for (ch = 1; ch < 8; ch += 2) 436 vidcaudio_stereo(ch, SIR_RIGHT_100); 437 } 438 } 439 return 0; 440 } 441 442 static int 443 vidcaudio_round_blocksize(void *addr, int wantblk, 444 int mode, const audio_params_t *param) 445 { 446 int blk; 447 448 /* 449 * Find the smallest power of two that's larger than the 450 * requested block size, but don't allow < 32 (DMA burst is 16 451 * bytes, and single bursts are tricky) or > PAGE_SIZE (DMA is 452 * confined to a page). 453 */ 454 455 for (blk = 32; blk < PAGE_SIZE; blk <<= 1) 456 if (blk >= wantblk) return blk; 457 return blk; 458 } 459 460 static int 461 vidcaudio_trigger_output(void *addr, void *start, void *end, int blksize, 462 void (*intr)(void *), void *arg, const audio_params_t *params) 463 { 464 struct vidcaudio_softc *sc = addr; 465 size_t npages, i; 466 467 DPRINTF(("vidcaudio_trigger_output %p-%p/0x%x\n", 468 start, end, blksize)); 469 470 KASSERT(blksize == vidcaudio_round_blocksize(addr, blksize, 0, NULL)); 471 KASSERT((vaddr_t)start % blksize == 0); 472 473 sc->sc_pblksize = blksize; 474 sc->sc_pbufsize = (char *)end - (char *)start; 475 npages = sc->sc_pbufsize >> PGSHIFT; 476 if (sc->sc_ppages != NULL) 477 free(sc->sc_ppages, M_DEVBUF); 478 sc->sc_ppages = malloc(npages * sizeof(paddr_t), M_DEVBUF, M_WAITOK); 479 if (sc->sc_ppages == NULL) return ENOMEM; 480 for (i = 0; i < npages; i++) 481 if (!pmap_extract(pmap_kernel(), 482 (vaddr_t)start + i * PAGE_SIZE, &sc->sc_ppages[i])) 483 return EIO; 484 sc->sc_poffset = 0; 485 sc->sc_pintr = intr; 486 sc->sc_parg = arg; 487 488 IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_CLEAR | IOMD_DMACR_QUADWORD); 489 IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_ENABLE | IOMD_DMACR_QUADWORD); 490 491 /* 492 * Queue up the first two blocks, but don't tell audio code 493 * we're finished with them yet. 494 */ 495 sc->sc_pcountdown = 2; 496 497 enable_irq(sc->sc_dma_intr); 498 499 return 0; 500 } 501 502 static int 503 vidcaudio_trigger_input(void *addr, void *start, void *end, int blksize, 504 void (*intr)(void *), void *arg, const audio_params_t *params) 505 { 506 507 return ENODEV; 508 } 509 510 static int 511 vidcaudio_halt_output(void *addr) 512 { 513 struct vidcaudio_softc *sc = addr; 514 515 DPRINTF(("vidcaudio_halt_output\n")); 516 disable_irq(sc->sc_dma_intr); 517 IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_CLEAR | IOMD_DMACR_QUADWORD); 518 return 0; 519 } 520 521 static int 522 vidcaudio_halt_input(void *addr) 523 { 524 525 return ENODEV; 526 } 527 528 static int 529 vidcaudio_getdev(void *addr, struct audio_device *retp) 530 { 531 532 *retp = vidcaudio_device; 533 return 0; 534 } 535 536 537 static int 538 vidcaudio_set_port(void *addr, mixer_ctrl_t *cp) 539 { 540 541 return EINVAL; 542 } 543 544 static int 545 vidcaudio_get_port(void *addr, mixer_ctrl_t *cp) 546 { 547 548 return EINVAL; 549 } 550 551 static int 552 vidcaudio_query_devinfo(void *addr, mixer_devinfo_t *dip) 553 { 554 555 return ENXIO; 556 } 557 558 static int 559 vidcaudio_get_props(void *addr) 560 { 561 562 return 0; 563 } 564 565 static void 566 vidcaudio_rate(int rate) 567 { 568 569 WriteWord(vidc_base, VIDC_SFR | rate); 570 } 571 572 static void 573 vidcaudio_ctrl(int ctrl) 574 { 575 576 WriteWord(vidc_base, VIDC_SCR | ctrl); 577 } 578 579 static void 580 vidcaudio_stereo(int channel, int position) 581 { 582 583 channel = channel << 24 | VIDC_SIR0; 584 WriteWord(vidc_base, channel | position); 585 } 586 587 static int 588 vidcaudio_intr(void *arg) 589 { 590 struct vidcaudio_softc *sc = arg; 591 int status; 592 paddr_t pnext, pend; 593 594 status = IOMD_READ_BYTE(IOMD_SD0ST); 595 DPRINTF(("I[%x]", status)); 596 if ((status & IOMD_DMAST_INT) == 0) 597 return 0; 598 599 pnext = sc->sc_ppages[sc->sc_poffset >> PGSHIFT] | 600 (sc->sc_poffset & PGOFSET); 601 pend = (pnext + sc->sc_pblksize - 16) & IOMD_DMAEND_OFFSET; 602 603 switch (status & 604 (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKB)) { 605 606 case (IOMD_DMAST_INT | IOMD_DMAST_BANKA): 607 case (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKB): 608 DPRINTF(("B<0x%08lx,0x%03lx>", pnext, pend)); 609 IOMD_WRITE_WORD(IOMD_SD0CURB, pnext); 610 IOMD_WRITE_WORD(IOMD_SD0ENDB, pend); 611 break; 612 613 case (IOMD_DMAST_INT | IOMD_DMAST_BANKB): 614 case (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKA): 615 DPRINTF(("A<0x%08lx,0x%03lx>", pnext, pend)); 616 IOMD_WRITE_WORD(IOMD_SD0CURA, pnext); 617 IOMD_WRITE_WORD(IOMD_SD0ENDA, pend); 618 break; 619 } 620 621 sc->sc_poffset += sc->sc_pblksize; 622 if (sc->sc_poffset >= sc->sc_pbufsize) 623 sc->sc_poffset = 0; 624 625 if (sc->sc_pcountdown > 0) 626 sc->sc_pcountdown--; 627 else 628 (*sc->sc_pintr)(sc->sc_parg); 629 630 return 1; 631 } 632
Indexes created Fri Oct 31 11:10:07 GMT 2025