1 /* $NetBSD: vidcaudio.c,v 1.62 2022/09/27 06:14:41 skrll 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 1.62 2022/09/27 06:14:41 skrll 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/kmem.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/audio_if.h> 81 #include <dev/audio/audiobellvar.h> 82 #include <dev/audio/mulaw.h> 83 84 #include <machine/intr.h> 85 #include <machine/machdep.h> 86 87 #include <arm/iomd/vidcaudiovar.h> 88 #include <arm/iomd/iomdreg.h> 89 #include <arm/iomd/iomdvar.h> 90 #include <arm/iomd/vidc.h> 91 #include <arm/mainbus/mainbus.h> 92 93 #include "pckbd.h" 94 #if NPCKBD > 0 95 #include <dev/pckbport/pckbdvar.h> 96 #endif 97 98 extern int *vidc_base; 99 100 #ifdef VIDCAUDIO_DEBUG 101 #define DPRINTF(x) printf x 102 #else 103 #define DPRINTF(x) 104 #endif 105 106 #define WriteWord(a, b) \ 107 *((volatile unsigned int *)(a)) = (b) 108 109 #define ReadWord(a) \ 110 (*((volatile unsigned int *)(a))) 111 112 struct vidcaudio_softc { 113 device_t sc_dev; 114 115 irqhandler_t sc_ih; 116 int sc_dma_intr; 117 118 int sc_is16bit; 119 120 size_t sc_pblksize; 121 vaddr_t sc_poffset; 122 vaddr_t sc_pbufsize; 123 paddr_t *sc_ppages; 124 size_t sc_szppages; 125 void (*sc_pintr)(void *); 126 void *sc_parg; 127 int sc_pcountdown; 128 129 kmutex_t sc_lock; 130 kmutex_t sc_intr_lock; 131 }; 132 133 static int vidcaudio_probe(device_t , cfdata_t , void *); 134 static void vidcaudio_attach(device_t , device_t , void *); 135 static void vidcaudio_close(void *); 136 137 static int vidcaudio_intr(void *); 138 static void vidcaudio_rate(int); 139 static void vidcaudio_ctrl(int); 140 static void vidcaudio_stereo(int, int); 141 142 CFATTACH_DECL_NEW(vidcaudio, sizeof(struct vidcaudio_softc), 143 vidcaudio_probe, vidcaudio_attach, NULL, NULL); 144 145 static int vidcaudio_query_format(void *, audio_format_query_t *); 146 static int vidcaudio_set_format(void *, int, 147 const audio_params_t *, const audio_params_t *, 148 audio_filter_reg_t *, audio_filter_reg_t *); 149 static int vidcaudio_round_blocksize(void *, int, int, const audio_params_t *); 150 static int vidcaudio_trigger_output(void *, void *, void *, int, 151 void (*)(void *), void *, const audio_params_t *); 152 static int vidcaudio_halt_output(void *); 153 static int vidcaudio_getdev(void *, struct audio_device *); 154 static int vidcaudio_set_port(void *, mixer_ctrl_t *); 155 static int vidcaudio_get_port(void *, mixer_ctrl_t *); 156 static int vidcaudio_query_devinfo(void *, mixer_devinfo_t *); 157 static int vidcaudio_get_props(void *); 158 static void vidcaudio_get_locks(void *, kmutex_t **, kmutex_t **); 159 160 static struct audio_device vidcaudio_device = { 161 "ARM VIDC", 162 "", 163 "vidcaudio" 164 }; 165 166 static const struct audio_hw_if vidcaudio_hw_if = { 167 .close = vidcaudio_close, 168 .query_format = vidcaudio_query_format, 169 .set_format = vidcaudio_set_format, 170 .round_blocksize = vidcaudio_round_blocksize, 171 .halt_output = vidcaudio_halt_output, 172 .getdev = vidcaudio_getdev, 173 .set_port = vidcaudio_set_port, 174 .get_port = vidcaudio_get_port, 175 .query_devinfo = vidcaudio_query_devinfo, 176 .get_props = vidcaudio_get_props, 177 .trigger_output = vidcaudio_trigger_output, 178 .get_locks = vidcaudio_get_locks, 179 }; 180 181 static const struct audio_format vidcaudio_formats_16bit = { 182 .mode = AUMODE_PLAY, 183 .encoding = AUDIO_ENCODING_SLINEAR_LE, 184 .validbits = 16, 185 .precision = 16, 186 .channels = 2, 187 .channel_mask = AUFMT_STEREO, 188 /* There are more selectable frequencies but these should be enough. */ 189 .frequency_type = 6, 190 .frequency = { 191 19600, /* /9 */ 192 22050, /* /8 */ 193 25200, /* /7 */ 194 29400, /* /6 */ 195 35280, /* /5 */ 196 44100, /* /4 */ 197 }, 198 }; 199 static const struct audio_format vidcaudio_formats_8bit = { 200 .mode = AUMODE_PLAY, 201 .encoding = AUDIO_ENCODING_ULAW, 202 .validbits = 8, 203 .precision = 8, 204 .channels = 2, /* we use stereo always */ 205 .channel_mask = AUFMT_STEREO, 206 /* frequency is preferably an integer. */ 207 .frequency_type = 6, 208 .frequency = { 209 10000, /* 50us */ 210 12500, /* 40us */ 211 20000, /* 25us */ 212 25000, /* 20us */ 213 31250, /* 16us */ 214 50000, /* 10us */ 215 }, 216 }; 217 218 static int 219 vidcaudio_probe(device_t parent, cfdata_t cf, void *aux) 220 { 221 int id; 222 223 id = IOMD_ID; 224 225 /* So far I only know about this IOMD */ 226 switch (id) { 227 case RPC600_IOMD_ID: 228 case ARM7500_IOC_ID: 229 case ARM7500FE_IOC_ID: 230 return 1; 231 default: 232 aprint_error("vidcaudio: Unknown IOMD id=%04x", id); 233 return 0; 234 } 235 } 236 237 238 static void 239 vidcaudio_attach(device_t parent, device_t self, void *aux) 240 { 241 struct vidcaudio_softc *sc = device_private(self); 242 device_t beepdev; 243 244 sc->sc_dev = self; 245 switch (IOMD_ID) { 246 #ifndef EB7500ATX 247 case RPC600_IOMD_ID: 248 sc->sc_is16bit = (cmos_read(0xc4) >> 5) & 1; 249 sc->sc_dma_intr = IRQ_DMASCH0; 250 break; 251 #endif 252 case ARM7500_IOC_ID: 253 case ARM7500FE_IOC_ID: 254 sc->sc_is16bit = true; 255 sc->sc_dma_intr = IRQ_SDMA; 256 break; 257 default: 258 aprint_error(": strange IOMD\n"); 259 return; 260 } 261 262 if (sc->sc_is16bit) 263 aprint_normal(": 16-bit external DAC\n"); 264 else 265 aprint_normal(": 8-bit internal DAC\n"); 266 267 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 268 mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO); 269 270 /* Install the irq handler for the DMA interrupt */ 271 sc->sc_ih.ih_func = vidcaudio_intr; 272 sc->sc_ih.ih_arg = sc; 273 sc->sc_ih.ih_level = IPL_AUDIO; 274 sc->sc_ih.ih_name = device_xname(self); 275 276 if (irq_claim(sc->sc_dma_intr, &sc->sc_ih) != 0) { 277 aprint_error("%s: couldn't claim IRQ %d\n", 278 device_xname(self), sc->sc_dma_intr); 279 return; 280 } 281 282 disable_irq(sc->sc_dma_intr); 283 284 beepdev = audio_attach_mi(&vidcaudio_hw_if, sc, self); 285 #if NPCKBD > 0 286 pckbd_hookup_bell(audiobell, beepdev); 287 #endif 288 } 289 290 static void 291 vidcaudio_close(void *addr) 292 { 293 struct vidcaudio_softc *sc; 294 295 DPRINTF(("DEBUG: vidcaudio_close called\n")); 296 sc = addr; 297 if (sc->sc_ppages != NULL) { 298 kmem_free(sc->sc_ppages, sc->sc_szppages * sizeof(paddr_t)); 299 sc->sc_ppages = NULL; 300 sc->sc_szppages = 0; 301 } 302 } 303 304 /* 305 * Interface to the generic audio driver 306 */ 307 308 static int 309 vidcaudio_query_format(void *addr, audio_format_query_t *afp) 310 { 311 struct vidcaudio_softc *sc; 312 313 sc = addr; 314 if (sc->sc_is16bit) 315 return audio_query_format(&vidcaudio_formats_16bit, 1, afp); 316 else 317 return audio_query_format(&vidcaudio_formats_8bit, 1, afp); 318 } 319 320 static int 321 vidcaudio_set_format(void *addr, int setmode, 322 const audio_params_t *play, const audio_params_t *rec, 323 audio_filter_reg_t *pfil, audio_filter_reg_t *rfil) 324 { 325 struct vidcaudio_softc *sc; 326 int sample_period, ch; 327 328 sc = addr; 329 if (sc->sc_is16bit) { 330 /* ARM7500ish, 16-bit, two-channel */ 331 sample_period = 705600 / 4 / play->sample_rate; 332 if (sample_period < 3) 333 sample_period = 3; 334 vidcaudio_rate(sample_period - 2); 335 vidcaudio_ctrl(SCR_SERIAL); 336 } else { 337 /* VIDC20ish, u-law, 8-channel */ 338 /* 339 * We always use two hardware channels, because using 340 * one at 8kHz gives a nasty whining sound from the 341 * speaker. 342 */ 343 sample_period = 1000000 / 2 / play->sample_rate; 344 if (sample_period < 3) 345 sample_period = 3; 346 vidcaudio_rate(sample_period - 2); 347 vidcaudio_ctrl(SCR_SDAC | SCR_CLKSEL); 348 for (ch = 0; ch < 8; ch += 2) 349 vidcaudio_stereo(ch, SIR_LEFT_100); 350 for (ch = 1; ch < 8; ch += 2) 351 vidcaudio_stereo(ch, SIR_RIGHT_100); 352 353 pfil->codec = audio_internal_to_mulaw; 354 } 355 return 0; 356 } 357 358 static int 359 vidcaudio_round_blocksize(void *addr, int wantblk, 360 int mode, const audio_params_t *param) 361 { 362 int blk; 363 364 /* 365 * Find the smallest power of two that's larger than the 366 * requested block size, but don't allow < 32 (DMA burst is 16 367 * bytes, and single bursts are tricky) or > PAGE_SIZE (DMA is 368 * confined to a page). 369 */ 370 371 for (blk = 32; blk < PAGE_SIZE; blk <<= 1) 372 if (blk >= wantblk) 373 return blk; 374 return blk; 375 } 376 377 static int 378 vidcaudio_trigger_output(void *addr, void *start, void *end, int blksize, 379 void (*intr)(void *), void *arg, const audio_params_t *params) 380 { 381 struct vidcaudio_softc *sc; 382 size_t npages, i; 383 384 DPRINTF(("vidcaudio_trigger_output %p-%p/0x%x\n", 385 start, end, blksize)); 386 387 sc = addr; 388 KASSERT(blksize == vidcaudio_round_blocksize(addr, blksize, 0, NULL)); 389 KASSERT((vaddr_t)start % blksize == 0); 390 391 sc->sc_pblksize = blksize; 392 sc->sc_pbufsize = (char *)end - (char *)start; 393 npages = sc->sc_pbufsize >> PGSHIFT; 394 if (sc->sc_ppages != NULL) 395 kmem_free(sc->sc_ppages, sc->sc_szppages); 396 sc->sc_szppages = npages * sizeof(paddr_t); 397 sc->sc_ppages = kmem_alloc(sc->sc_szppages, KM_SLEEP); 398 if (sc->sc_ppages == NULL) 399 return ENOMEM; 400 for (i = 0; i < npages; i++) 401 if (!pmap_extract(pmap_kernel(), 402 (vaddr_t)start + i * PAGE_SIZE, &sc->sc_ppages[i])) 403 return EIO; 404 sc->sc_poffset = 0; 405 sc->sc_pintr = intr; 406 sc->sc_parg = arg; 407 408 IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_CLEAR | IOMD_DMACR_QUADWORD); 409 IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_ENABLE | IOMD_DMACR_QUADWORD); 410 411 /* 412 * Queue up the first two blocks, but don't tell audio code 413 * we're finished with them yet. 414 */ 415 sc->sc_pcountdown = 2; 416 417 enable_irq(sc->sc_dma_intr); 418 419 return 0; 420 } 421 422 static int 423 vidcaudio_halt_output(void *addr) 424 { 425 struct vidcaudio_softc *sc; 426 427 DPRINTF(("vidcaudio_halt_output\n")); 428 sc = addr; 429 disable_irq(sc->sc_dma_intr); 430 IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_CLEAR | IOMD_DMACR_QUADWORD); 431 return 0; 432 } 433 434 static int 435 vidcaudio_getdev(void *addr, struct audio_device *retp) 436 { 437 438 *retp = vidcaudio_device; 439 return 0; 440 } 441 442 443 static int 444 vidcaudio_set_port(void *addr, mixer_ctrl_t *cp) 445 { 446 447 return EINVAL; 448 } 449 450 static int 451 vidcaudio_get_port(void *addr, mixer_ctrl_t *cp) 452 { 453 454 return EINVAL; 455 } 456 457 static int 458 vidcaudio_query_devinfo(void *addr, mixer_devinfo_t *dip) 459 { 460 461 return ENXIO; 462 } 463 464 static int 465 vidcaudio_get_props(void *addr) 466 { 467 468 return AUDIO_PROP_PLAYBACK | AUDIO_PROP_CAPTURE; 469 } 470 471 static void 472 vidcaudio_get_locks(void *opaque, kmutex_t **intr, kmutex_t **thread) 473 { 474 struct vidcaudio_softc *sc = opaque; 475 476 *intr = &sc->sc_intr_lock; 477 *thread = &sc->sc_lock; 478 } 479 480 static void 481 vidcaudio_rate(int rate) 482 { 483 484 WriteWord(vidc_base, VIDC_SFR | rate); 485 } 486 487 static void 488 vidcaudio_ctrl(int ctrl) 489 { 490 491 WriteWord(vidc_base, VIDC_SCR | ctrl); 492 } 493 494 static void 495 vidcaudio_stereo(int channel, int position) 496 { 497 498 channel = channel << 24 | VIDC_SIR0; 499 WriteWord(vidc_base, channel | position); 500 } 501 502 static int 503 vidcaudio_intr(void *arg) 504 { 505 struct vidcaudio_softc *sc; 506 int status; 507 paddr_t pnext, pend; 508 509 sc = arg; 510 mutex_spin_enter(&sc->sc_intr_lock); 511 512 status = IOMD_READ_BYTE(IOMD_SD0ST); 513 DPRINTF(("I[%x]", status)); 514 if ((status & IOMD_DMAST_INT) == 0) { 515 mutex_spin_exit(&sc->sc_intr_lock); 516 return 0; 517 } 518 519 pnext = sc->sc_ppages[sc->sc_poffset >> PGSHIFT] | 520 (sc->sc_poffset & PGOFSET); 521 pend = (pnext + sc->sc_pblksize - 16) & IOMD_DMAEND_OFFSET; 522 523 switch (status & 524 (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKB)) { 525 526 case (IOMD_DMAST_INT | IOMD_DMAST_BANKA): 527 case (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKB): 528 DPRINTF(("B<0x%08lx,0x%03lx>", pnext, pend)); 529 IOMD_WRITE_WORD(IOMD_SD0CURB, pnext); 530 IOMD_WRITE_WORD(IOMD_SD0ENDB, pend); 531 break; 532 533 case (IOMD_DMAST_INT | IOMD_DMAST_BANKB): 534 case (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKA): 535 DPRINTF(("A<0x%08lx,0x%03lx>", pnext, pend)); 536 IOMD_WRITE_WORD(IOMD_SD0CURA, pnext); 537 IOMD_WRITE_WORD(IOMD_SD0ENDA, pend); 538 break; 539 } 540 541 sc->sc_poffset += sc->sc_pblksize; 542 if (sc->sc_poffset >= sc->sc_pbufsize) 543 sc->sc_poffset = 0; 544 545 if (sc->sc_pcountdown > 0) 546 sc->sc_pcountdown--; 547 else 548 (*sc->sc_pintr)(sc->sc_parg); 549 550 mutex_spin_exit(&sc->sc_intr_lock); 551 return 1; 552 } 553
Indexes created Thu Oct 23 22:10:10 GMT 2025