auixp.c revision 1.39
1 /* $NetBSD: auixp.c,v 1.39 2012/10/27 17:18:28 chs Exp $ */ 2 3 /* 4 * Copyright (c) 2004, 2005 Reinoud Zandijk <reinoud (at) netbsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 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 NetBSD 17 * Foundation, Inc. and its contributors. 18 * 4. Neither the name of The NetBSD Foundation nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * 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, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 36 /* 37 * NetBSD audio driver for ATI IXP-{150,200,...} audio driver hardware. 38 * 39 * Recording and playback has been tested OK on various sample rates and 40 * encodings. 41 * 42 * Known problems and issues : 43 * - SPDIF is untested and needs some work still (LED stays off) 44 * - 32 bit audio playback failed last time i tried but that might an AC'97 45 * codec support problem. 46 * - 32 bit recording works but can't try out playing: see above. 47 * - no suspend/resume support yet. 48 * - multiple codecs are `supported' but not tested; the implemetation needs 49 * some cleaning up. 50 */ 51 52 #include <sys/cdefs.h> 53 __KERNEL_RCSID(0, "$NetBSD: auixp.c,v 1.39 2012/10/27 17:18:28 chs Exp $"); 54 55 #include <sys/types.h> 56 #include <sys/errno.h> 57 #include <sys/null.h> 58 #include <sys/param.h> 59 #include <sys/systm.h> 60 #include <sys/kmem.h> 61 #include <sys/device.h> 62 #include <sys/conf.h> 63 #include <sys/exec.h> 64 #include <sys/select.h> 65 #include <sys/audioio.h> 66 #include <sys/queue.h> 67 #include <sys/bus.h> 68 #include <sys/intr.h> 69 70 #include <dev/audio_if.h> 71 #include <dev/mulaw.h> 72 #include <dev/auconv.h> 73 74 #include <dev/ic/ac97var.h> 75 #include <dev/ic/ac97reg.h> 76 77 #include <dev/pci/pcidevs.h> 78 #include <dev/pci/pcivar.h> 79 #include <dev/pci/auixpreg.h> 80 #include <dev/pci/auixpvar.h> 81 82 83 /* #define DEBUG_AUIXP */ 84 85 86 /* why isn't this base address register not in the headerfile? */ 87 #define PCI_CBIO 0x10 88 89 90 /* macro's used */ 91 #define KERNADDR(p) ((void *)((p)->addr)) 92 #define DMAADDR(p) ((p)->map->dm_segs[0].ds_addr) 93 94 95 /* the differences might be irrelevant */ 96 enum { 97 IXP_200, 98 IXP_300, 99 IXP_400 100 }; 101 102 103 /* our `cards' */ 104 static const struct auixp_card_type { 105 uint16_t pci_vendor_id; 106 uint16_t pci_product_id; 107 int type; 108 } auixp_card_types[] = { 109 { PCI_VENDOR_ATI, PCI_PRODUCT_ATI_IXP_AUDIO_200, IXP_200 }, 110 { PCI_VENDOR_ATI, PCI_PRODUCT_ATI_IXP_AUDIO_300, IXP_300 }, 111 { PCI_VENDOR_ATI, PCI_PRODUCT_ATI_IXP_AUDIO_400, IXP_400 }, 112 { 0, 0, 0 } 113 }; 114 115 116 struct audio_device auixp_device = { 117 "ATI IXP audio", 118 "", 119 "auixp" 120 }; 121 122 123 /* codec detection constant indicating the interrupt flags */ 124 #define ALL_CODECS_NOT_READY \ 125 (ATI_REG_ISR_CODEC0_NOT_READY |\ 126 ATI_REG_ISR_CODEC1_NOT_READY |\ 127 ATI_REG_ISR_CODEC2_NOT_READY) 128 #define CODEC_CHECK_BITS (ALL_CODECS_NOT_READY|ATI_REG_ISR_NEW_FRAME) 129 130 131 /* autoconfig */ 132 static int auixp_match(device_t, cfdata_t, void *); 133 static void auixp_attach(device_t, device_t, void *); 134 static int auixp_detach(device_t, int); 135 136 137 /* audio(9) function prototypes */ 138 static int auixp_query_encoding(void *, struct audio_encoding *); 139 static int auixp_set_params(void *, int, int, audio_params_t *, 140 audio_params_t *, 141 stream_filter_list_t *, stream_filter_list_t *); 142 static int auixp_commit_settings(void *); 143 static int auixp_round_blocksize(void *, int, int, const audio_params_t *); 144 static int auixp_trigger_output(void *, void *, void *, int, 145 void (*)(void *), 146 void *, const audio_params_t *); 147 static int auixp_trigger_input(void *, void *, void *, int, 148 void (*)(void *), 149 void *, const audio_params_t *); 150 static int auixp_halt_output(void *); 151 static int auixp_halt_input(void *); 152 static int auixp_set_port(void *, mixer_ctrl_t *); 153 static int auixp_get_port(void *, mixer_ctrl_t *); 154 static int auixp_query_devinfo(void *, mixer_devinfo_t *); 155 static void * auixp_malloc(void *, int, size_t); 156 static void auixp_free(void *, void *, size_t); 157 static int auixp_getdev(void *, struct audio_device *); 158 static size_t auixp_round_buffersize(void *, int, size_t); 159 static int auixp_get_props(void *); 160 static int auixp_intr(void *); 161 static int auixp_allocmem(struct auixp_softc *, size_t, size_t, 162 struct auixp_dma *); 163 static int auixp_freemem(struct auixp_softc *, struct auixp_dma *); 164 static paddr_t auixp_mappage(void *, void *, off_t, int); 165 166 /* Supporting subroutines */ 167 static int auixp_init(struct auixp_softc *); 168 static void auixp_autodetect_codecs(struct auixp_softc *); 169 static void auixp_post_config(device_t); 170 171 static void auixp_reset_aclink(struct auixp_softc *); 172 static int auixp_attach_codec(void *, struct ac97_codec_if *); 173 static int auixp_read_codec(void *, uint8_t, uint16_t *); 174 static int auixp_write_codec(void *, uint8_t, uint16_t); 175 static int auixp_wait_for_codecs(struct auixp_softc *, const char *); 176 static int auixp_reset_codec(void *); 177 static enum ac97_host_flags auixp_flags_codec(void *); 178 179 static void auixp_enable_dma(struct auixp_softc *, struct auixp_dma *); 180 static void auixp_disable_dma(struct auixp_softc *, struct auixp_dma *); 181 static void auixp_enable_interrupts(struct auixp_softc *); 182 static void auixp_disable_interrupts(struct auixp_softc *); 183 184 185 /* statics */ 186 static void auixp_link_daisychain(struct auixp_softc *, 187 struct auixp_dma *, struct auixp_dma *, 188 int, int); 189 static int auixp_allocate_dma_chain(struct auixp_softc *, 190 struct auixp_dma **); 191 static void auixp_program_dma_chain(struct auixp_softc *, 192 struct auixp_dma *); 193 static void auixp_dma_update(struct auixp_softc *, struct auixp_dma *); 194 static void auixp_update_busbusy(struct auixp_softc *); 195 static void auixp_get_locks(void *, kmutex_t **, kmutex_t **); 196 197 static bool auixp_resume(device_t, const pmf_qual_t *); 198 199 200 #ifdef DEBUG_AUIXP 201 static struct auixp_softc *static_sc; 202 static void auixp_dumpreg(void); 203 # define DPRINTF(x) printf x; 204 #else 205 # define DPRINTF(x) 206 #endif 207 208 209 static const struct audio_hw_if auixp_hw_if = { 210 NULL, /* open */ 211 NULL, /* close */ 212 NULL, /* drain */ 213 auixp_query_encoding, 214 auixp_set_params, 215 auixp_round_blocksize, 216 auixp_commit_settings, 217 NULL, /* init_output */ 218 NULL, /* init_input */ 219 NULL, /* start_output */ 220 NULL, /* start_input */ 221 auixp_halt_output, 222 auixp_halt_input, 223 NULL, /* speaker_ctl */ 224 auixp_getdev, 225 NULL, /* getfd */ 226 auixp_set_port, 227 auixp_get_port, 228 auixp_query_devinfo, 229 auixp_malloc, 230 auixp_free, 231 auixp_round_buffersize, 232 auixp_mappage, 233 auixp_get_props, 234 auixp_trigger_output, 235 auixp_trigger_input, 236 NULL, /* dev_ioctl */ 237 auixp_get_locks, 238 }; 239 240 241 CFATTACH_DECL_NEW(auixp, sizeof(struct auixp_softc), auixp_match, auixp_attach, 242 auixp_detach, NULL); 243 244 245 /* 246 * audio(9) functions 247 */ 248 249 static int 250 auixp_query_encoding(void *hdl, struct audio_encoding *ae) 251 { 252 struct auixp_codec *co; 253 struct auixp_softc *sc; 254 255 co = (struct auixp_codec *) hdl; 256 sc = co->sc; 257 return auconv_query_encoding(sc->sc_encodings, ae); 258 } 259 260 261 static int 262 auixp_set_rate(struct auixp_codec *co, int mode, u_int srate) 263 { 264 int ret; 265 u_int ratetmp; 266 267 ratetmp = srate; 268 if (mode == AUMODE_RECORD) { 269 ret = co->codec_if->vtbl->set_rate(co->codec_if, 270 AC97_REG_PCM_LR_ADC_RATE, &ratetmp); 271 return ret; 272 } 273 274 /* play mode */ 275 ret = co->codec_if->vtbl->set_rate(co->codec_if, 276 AC97_REG_PCM_FRONT_DAC_RATE, &ratetmp); 277 if (ret) 278 return ret; 279 280 ratetmp = srate; 281 ret = co->codec_if->vtbl->set_rate(co->codec_if, 282 AC97_REG_PCM_SURR_DAC_RATE, &ratetmp); 283 if (ret) 284 return ret; 285 286 ratetmp = srate; 287 ret = co->codec_if->vtbl->set_rate(co->codec_if, 288 AC97_REG_PCM_LFE_DAC_RATE, &ratetmp); 289 return ret; 290 } 291 292 293 /* commit setting and program ATI IXP chip */ 294 static int 295 auixp_commit_settings(void *hdl) 296 { 297 struct auixp_codec *co; 298 struct auixp_softc *sc; 299 bus_space_tag_t iot; 300 bus_space_handle_t ioh; 301 struct audio_params *params; 302 uint32_t value; 303 304 /* XXX would it be better to stop interrupts first? XXX */ 305 co = (struct auixp_codec *) hdl; 306 sc = co->sc; 307 iot = sc->sc_iot; 308 ioh = sc->sc_ioh; 309 310 /* process input settings */ 311 params = &sc->sc_play_params; 312 313 /* set input interleaving (precision) */ 314 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 315 value &= ~ATI_REG_CMD_INTERLEAVE_IN; 316 if (params->precision <= 16) 317 value |= ATI_REG_CMD_INTERLEAVE_IN; 318 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 319 320 /* process output settings */ 321 params = &sc->sc_play_params; 322 323 value = bus_space_read_4(iot, ioh, ATI_REG_OUT_DMA_SLOT); 324 value &= ~ATI_REG_OUT_DMA_SLOT_MASK; 325 326 /* TODO SPDIF case for 8 channels */ 327 switch (params->channels) { 328 case 6: 329 value |= ATI_REG_OUT_DMA_SLOT_BIT(7) | 330 ATI_REG_OUT_DMA_SLOT_BIT(8); 331 /* fallthru */ 332 case 4: 333 value |= ATI_REG_OUT_DMA_SLOT_BIT(6) | 334 ATI_REG_OUT_DMA_SLOT_BIT(9); 335 /* fallthru */ 336 default: 337 value |= ATI_REG_OUT_DMA_SLOT_BIT(3) | 338 ATI_REG_OUT_DMA_SLOT_BIT(4); 339 break; 340 } 341 /* set output threshold */ 342 value |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT; 343 bus_space_write_4(iot, ioh, ATI_REG_OUT_DMA_SLOT, value); 344 345 /* set output interleaving (precision) */ 346 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 347 value &= ~ATI_REG_CMD_INTERLEAVE_OUT; 348 if (params->precision <= 16) 349 value |= ATI_REG_CMD_INTERLEAVE_OUT; 350 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 351 352 /* enable 6 channel reordering */ 353 value = bus_space_read_4(iot, ioh, ATI_REG_6CH_REORDER); 354 value &= ~ATI_REG_6CH_REORDER_EN; 355 if (params->channels == 6) 356 value |= ATI_REG_6CH_REORDER_EN; 357 bus_space_write_4(iot, ioh, ATI_REG_6CH_REORDER, value); 358 359 if (sc->has_spdif) { 360 /* set SPDIF (if present) */ 361 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 362 value &= ~ATI_REG_CMD_SPDF_CONFIG_MASK; 363 value |= ATI_REG_CMD_SPDF_CONFIG_34; /* NetBSD AC'97 default */ 364 365 /* XXX this prolly is not nessisary unless splitted XXX */ 366 value &= ~ATI_REG_CMD_INTERLEAVE_SPDF; 367 if (params->precision <= 16) 368 value |= ATI_REG_CMD_INTERLEAVE_SPDF; 369 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 370 } 371 372 return 0; 373 } 374 375 376 /* set audio properties in desired setting */ 377 static int 378 auixp_set_params(void *hdl, int setmode, int usemode, 379 audio_params_t *play, audio_params_t *rec, stream_filter_list_t *pfil, 380 stream_filter_list_t *rfil) 381 { 382 struct auixp_codec *co; 383 struct auixp_softc *sc; 384 audio_params_t *params; 385 stream_filter_list_t *fil; 386 int mode, index; 387 388 /* 389 * In current NetBSD AC'97 implementation, SPDF is linked to channel 3 390 * and 4 i.e. stereo output. 391 */ 392 393 co = (struct auixp_codec *) hdl; 394 sc = co->sc; 395 for (mode = AUMODE_RECORD; mode != -1; 396 mode = (mode == AUMODE_RECORD) ? AUMODE_PLAY : -1) { 397 if ((setmode & mode) == 0) 398 continue; 399 400 params = (mode == AUMODE_PLAY) ? play : rec; 401 fil = (mode == AUMODE_PLAY) ? pfil : rfil; 402 if (params == NULL) 403 continue; 404 405 /* AD1888 settings ... don't know the IXP limits */ 406 if (params->sample_rate < AUIXP_MINRATE) 407 return EINVAL; 408 if (params->sample_rate > AUIXP_MAXRATE) 409 return EINVAL; 410 411 index = auconv_set_converter(sc->sc_formats, AUIXP_NFORMATS, 412 mode, params, TRUE, fil); 413 414 /* nothing found? */ 415 if (index < 0) 416 return EINVAL; 417 418 /* not sure yet as to why i have to change params here */ 419 if (fil->req_size > 0) 420 params = &fil->filters[0].param; 421 422 /* if variable speed and we can't set the desired rate, fail */ 423 if ((sc->sc_formats[index].frequency_type != 1) && 424 auixp_set_rate(co, mode, params->sample_rate)) 425 return EINVAL; 426 427 /* preserve the settings */ 428 if (mode == AUMODE_PLAY) 429 sc->sc_play_params = *params; 430 if (mode == AUMODE_RECORD) 431 sc->sc_rec_params = *params; 432 } 433 434 return 0; 435 } 436 437 438 /* called to translate a requested blocksize to a hw-possible one */ 439 static int 440 auixp_round_blocksize(void *hdl, int bs, int mode, 441 const audio_params_t *param) 442 { 443 uint32_t new_bs; 444 445 new_bs = bs; 446 /* Be conservative; align to 32 bytes and maximise it to 64 kb */ 447 /* 256 kb possible */ 448 if (new_bs > 0x10000) 449 bs = 0x10000; /* 64 kb max */ 450 new_bs = (bs & ~0x20); /* 32 bytes align */ 451 452 return new_bs; 453 } 454 455 456 /* 457 * allocate dma capable memory and record its information for later retrieval 458 * when we program the dma chain itself. The trigger routines passes on the 459 * kernel virtual address we return here as a reference to the mapping. 460 */ 461 static void * 462 auixp_malloc(void *hdl, int direction, size_t size) 463 { 464 struct auixp_codec *co; 465 struct auixp_softc *sc; 466 struct auixp_dma *dma; 467 int error; 468 469 co = (struct auixp_codec *) hdl; 470 sc = co->sc; 471 /* get us a auixp_dma structure */ 472 dma = kmem_alloc(sizeof(*dma), KM_SLEEP); 473 if (!dma) 474 return NULL; 475 476 /* get us a dma buffer itself */ 477 error = auixp_allocmem(sc, size, 16, dma); 478 if (error) { 479 kmem_free(dma, sizeof(*dma)); 480 aprint_error_dev(sc->sc_dev, "auixp_malloc: not enough memory\n"); 481 482 return NULL; 483 } 484 SLIST_INSERT_HEAD(&sc->sc_dma_list, dma, dma_chain); 485 486 DPRINTF(("auixp_malloc: returning kern %p, hw 0x%08x for %d bytes " 487 "in %d segs\n", KERNADDR(dma), (uint32_t) DMAADDR(dma), dma->size, 488 dma->nsegs) 489 ); 490 491 return KERNADDR(dma); 492 } 493 494 495 /* 496 * free and release dma capable memory we allocated before and remove its 497 * recording 498 */ 499 static void 500 auixp_free(void *hdl, void *addr, size_t size) 501 { 502 struct auixp_codec *co; 503 struct auixp_softc *sc; 504 struct auixp_dma *dma; 505 506 co = (struct auixp_codec *) hdl; 507 sc = co->sc; 508 SLIST_FOREACH(dma, &sc->sc_dma_list, dma_chain) { 509 if (KERNADDR(dma) == addr) { 510 SLIST_REMOVE(&sc->sc_dma_list, dma, auixp_dma, 511 dma_chain); 512 auixp_freemem(sc, dma); 513 kmem_free(dma, sizeof(*dma)); 514 return; 515 } 516 } 517 } 518 519 520 static int 521 auixp_getdev(void *hdl, struct audio_device *ret) 522 { 523 524 *ret = auixp_device; 525 return 0; 526 } 527 528 529 /* pass request to AC'97 codec code */ 530 static int 531 auixp_set_port(void *hdl, mixer_ctrl_t *mc) 532 { 533 struct auixp_codec *co; 534 535 co = (struct auixp_codec *) hdl; 536 return co->codec_if->vtbl->mixer_set_port(co->codec_if, mc); 537 } 538 539 540 /* pass request to AC'97 codec code */ 541 static int 542 auixp_get_port(void *hdl, mixer_ctrl_t *mc) 543 { 544 struct auixp_codec *co; 545 546 co = (struct auixp_codec *) hdl; 547 return co->codec_if->vtbl->mixer_get_port(co->codec_if, mc); 548 } 549 550 /* pass request to AC'97 codec code */ 551 static int 552 auixp_query_devinfo(void *hdl, mixer_devinfo_t *di) 553 { 554 struct auixp_codec *co; 555 556 co = (struct auixp_codec *) hdl; 557 return co->codec_if->vtbl->query_devinfo(co->codec_if, di); 558 } 559 560 561 static size_t 562 auixp_round_buffersize(void *hdl, int direction, 563 size_t bufsize) 564 { 565 566 /* XXX force maximum? i.e. 256 kb? */ 567 return bufsize; 568 } 569 570 571 static int 572 auixp_get_props(void *hdl) 573 { 574 575 return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX; 576 } 577 578 579 /* 580 * A dma descriptor has dma->nsegs segments defined in dma->segs set up when 581 * we claimed the memory. 582 * 583 * Due to our demand for one contiguous DMA area, we only have one segment. A 584 * c_dma structure is about 3 kb for the 256 entries we maximally program 585 * -arbitrary limit AFAIK- so all is most likely to be in one segment/page 586 * anyway. 587 * 588 * XXX ought to implement fragmented dma area XXX 589 * 590 * Note that _v variables depict kernel virtual addresses, _p variables depict 591 * physical addresses. 592 */ 593 static void 594 auixp_link_daisychain(struct auixp_softc *sc, 595 struct auixp_dma *c_dma, struct auixp_dma *s_dma, 596 int blksize, int blocks) 597 { 598 atiixp_dma_desc_t *caddr_v, *next_caddr_v; 599 uint32_t caddr_p, next_caddr_p, saddr_p; 600 int i; 601 602 /* just make sure we are not changing when its running */ 603 auixp_disable_dma(sc, c_dma); 604 605 /* setup dma chain start addresses */ 606 caddr_v = KERNADDR(c_dma); 607 caddr_p = DMAADDR(c_dma); 608 saddr_p = DMAADDR(s_dma); 609 610 /* program the requested number of blocks */ 611 for (i = 0; i < blocks; i++) { 612 /* clear the block just in case */ 613 memset(caddr_v, 0, sizeof(atiixp_dma_desc_t)); 614 615 /* round robin the chain dma addresses for its successor */ 616 next_caddr_v = caddr_v + 1; 617 next_caddr_p = caddr_p + sizeof(atiixp_dma_desc_t); 618 619 if (i == blocks-1) { 620 next_caddr_v = KERNADDR(c_dma); 621 next_caddr_p = DMAADDR(c_dma); 622 } 623 624 /* fill in the hardware dma chain descriptor in little-endian */ 625 caddr_v->addr = htole32(saddr_p); 626 caddr_v->status = htole16(0); 627 caddr_v->size = htole16((blksize >> 2)); /* in dwords (!!!) */ 628 caddr_v->next = htole32(next_caddr_p); 629 630 /* advance slot */ 631 saddr_p += blksize; /* XXX assuming contiguous XXX */ 632 caddr_v = next_caddr_v; 633 caddr_p = next_caddr_p; 634 } 635 } 636 637 638 static int 639 auixp_allocate_dma_chain(struct auixp_softc *sc, struct auixp_dma **dmap) 640 { 641 struct auixp_dma *dma; 642 int error; 643 644 /* allocate keeper of dma area */ 645 *dmap = NULL; 646 dma = kmem_zalloc(sizeof(struct auixp_dma), KM_SLEEP); 647 if (!dma) 648 return ENOMEM; 649 650 /* allocate for daisychain of IXP hardware-dma descriptors */ 651 error = auixp_allocmem(sc, DMA_DESC_CHAIN * sizeof(atiixp_dma_desc_t), 652 16, dma); 653 if (error) { 654 aprint_error_dev(sc->sc_dev, "can't malloc dma descriptor chain\n"); 655 kmem_free(dma, sizeof(*dma)); 656 return ENOMEM; 657 } 658 659 /* return info and initialise structure */ 660 dma->intr = NULL; 661 dma->intrarg = NULL; 662 663 *dmap = dma; 664 return 0; 665 } 666 667 668 /* program dma chain in it's link address descriptor */ 669 static void 670 auixp_program_dma_chain(struct auixp_softc *sc, struct auixp_dma *dma) 671 { 672 bus_space_tag_t iot; 673 bus_space_handle_t ioh; 674 uint32_t value; 675 676 iot = sc->sc_iot; 677 ioh = sc->sc_ioh; 678 /* get hardware start address of DMA chain and set valid-flag in it */ 679 /* XXX always at start? XXX */ 680 value = DMAADDR(dma); 681 value = value | ATI_REG_LINKPTR_EN; 682 683 /* reset linkpointer */ 684 bus_space_write_4(iot, ioh, dma->linkptr, 0); 685 686 /* reset this DMA engine */ 687 auixp_disable_dma(sc, dma); 688 auixp_enable_dma(sc, dma); 689 690 /* program new DMA linkpointer */ 691 bus_space_write_4(iot, ioh, dma->linkptr, value); 692 } 693 694 695 /* called from interrupt code to signal end of one dma-slot */ 696 static void 697 auixp_dma_update(struct auixp_softc *sc, struct auixp_dma *dma) 698 { 699 700 /* be very paranoid */ 701 if (!dma) 702 panic("%s: update: dma = NULL", device_xname(sc->sc_dev)); 703 if (!dma->intr) 704 panic("%s: update: dma->intr = NULL", device_xname(sc->sc_dev)); 705 706 /* request more input from upper layer */ 707 (*dma->intr)(dma->intrarg); 708 } 709 710 711 /* 712 * The magic `busbusy' bit that needs to be set when dma is active; allowing 713 * busmastering? 714 */ 715 static void 716 auixp_update_busbusy(struct auixp_softc *sc) 717 { 718 bus_space_tag_t iot; 719 bus_space_handle_t ioh; 720 uint32_t value; 721 int running; 722 723 iot = sc->sc_iot; 724 ioh = sc->sc_ioh; 725 /* set bus-busy flag when either recording or playing is performed */ 726 value = bus_space_read_4(iot, ioh, ATI_REG_IER); 727 value &= ~ATI_REG_IER_SET_BUS_BUSY; 728 729 running = ((sc->sc_output_dma->running) || (sc->sc_input_dma->running)); 730 if (running) 731 value |= ATI_REG_IER_SET_BUS_BUSY; 732 733 bus_space_write_4(iot, ioh, ATI_REG_IER, value); 734 735 } 736 737 738 /* 739 * Called from upper audio layer to request playing audio, only called once; 740 * audio is refilled by calling the intr() function when space is available 741 * again. 742 */ 743 /* XXX allmost literaly a copy of trigger-input; could be factorised XXX */ 744 static int 745 auixp_trigger_output(void *hdl, void *start, void *end, int blksize, 746 void (*intr)(void *), void *intrarg, const audio_params_t *param) 747 { 748 struct auixp_codec *co; 749 struct auixp_softc *sc; 750 struct auixp_dma *chain_dma; 751 struct auixp_dma *sound_dma; 752 uint32_t blocks; 753 754 co = (struct auixp_codec *) hdl; 755 sc = co->sc; 756 chain_dma = sc->sc_output_dma; 757 /* add functions to call back */ 758 chain_dma->intr = intr; 759 chain_dma->intrarg = intrarg; 760 761 /* 762 * Program output DMA chain with blocks from [start...end] with 763 * blksize fragments. 764 * 765 * NOTE, we can assume its in one block since we asked for it to be in 766 * one contiguous blob; XXX change this? XXX 767 */ 768 blocks = (size_t) (((char *) end) - ((char *) start)) / blksize; 769 770 /* lookup `start' address in our list of DMA area's */ 771 SLIST_FOREACH(sound_dma, &sc->sc_dma_list, dma_chain) { 772 if (KERNADDR(sound_dma) == start) 773 break; 774 } 775 776 /* not ours ? then bail out */ 777 if (!sound_dma) { 778 printf("%s: auixp_trigger_output: bad sound addr %p\n", 779 device_xname(sc->sc_dev), start); 780 return EINVAL; 781 } 782 783 /* link round-robin daisychain and program hardware */ 784 auixp_link_daisychain(sc, chain_dma, sound_dma, blksize, blocks); 785 auixp_program_dma_chain(sc, chain_dma); 786 787 /* mark we are now able to run now */ 788 chain_dma->running = 1; 789 790 /* update bus-flags; XXX programs more flags XXX */ 791 auixp_update_busbusy(sc); 792 793 /* callbacks happen in interrupt routine */ 794 return 0; 795 } 796 797 798 /* halt output of audio, just disable it's dma and update bus state */ 799 static int 800 auixp_halt_output(void *hdl) 801 { 802 struct auixp_codec *co; 803 struct auixp_softc *sc; 804 struct auixp_dma *dma; 805 806 co = (struct auixp_codec *) hdl; 807 sc = co->sc; 808 dma = sc->sc_output_dma; 809 auixp_disable_dma(sc, dma); 810 811 dma->running = 0; 812 auixp_update_busbusy(sc); 813 814 return 0; 815 } 816 817 818 /* XXX allmost literaly a copy of trigger-output; could be factorised XXX */ 819 static int 820 auixp_trigger_input(void *hdl, void *start, void *end, int blksize, 821 void (*intr)(void *), void *intrarg, const audio_params_t *param) 822 { 823 struct auixp_codec *co; 824 struct auixp_softc *sc; 825 struct auixp_dma *chain_dma; 826 struct auixp_dma *sound_dma; 827 uint32_t blocks; 828 829 co = (struct auixp_codec *) hdl; 830 sc = co->sc; 831 chain_dma = sc->sc_input_dma; 832 /* add functions to call back */ 833 chain_dma->intr = intr; 834 chain_dma->intrarg = intrarg; 835 836 /* 837 * Program output DMA chain with blocks from [start...end] with 838 * blksize fragments. 839 * 840 * NOTE, we can assume its in one block since we asked for it to be in 841 * one contiguous blob; XXX change this? XXX 842 */ 843 blocks = (size_t) (((char *) end) - ((char *) start)) / blksize; 844 845 /* lookup `start' address in our list of DMA area's */ 846 SLIST_FOREACH(sound_dma, &sc->sc_dma_list, dma_chain) { 847 if (KERNADDR(sound_dma) == start) 848 break; 849 } 850 851 /* not ours ? then bail out */ 852 if (!sound_dma) { 853 printf("%s: auixp_trigger_input: bad sound addr %p\n", 854 device_xname(sc->sc_dev), start); 855 return EINVAL; 856 } 857 858 /* link round-robin daisychain and program hardware */ 859 auixp_link_daisychain(sc, chain_dma, sound_dma, blksize, blocks); 860 auixp_program_dma_chain(sc, chain_dma); 861 862 /* mark we are now able to run now */ 863 chain_dma->running = 1; 864 865 /* update bus-flags; XXX programs more flags XXX */ 866 auixp_update_busbusy(sc); 867 868 /* callbacks happen in interrupt routine */ 869 return 0; 870 } 871 872 873 /* halt sampling audio, just disable it's dma and update bus state */ 874 static int 875 auixp_halt_input(void *hdl) 876 { 877 struct auixp_codec *co; 878 struct auixp_softc *sc; 879 struct auixp_dma *dma; 880 881 co = (struct auixp_codec *) hdl; 882 sc = co->sc; 883 dma = sc->sc_input_dma; 884 auixp_disable_dma(sc, dma); 885 886 dma->running = 0; 887 auixp_update_busbusy(sc); 888 889 return 0; 890 } 891 892 893 /* 894 * IXP audio interrupt handler 895 * 896 * note that we return the number of bits handled; the return value is not 897 * documentated but i saw it implemented in other drivers. Prolly returning a 898 * value > 0 means "i've dealt with it" 899 * 900 */ 901 static int 902 auixp_intr(void *softc) 903 { 904 struct auixp_softc *sc; 905 bus_space_tag_t iot; 906 bus_space_handle_t ioh; 907 uint32_t status, enable, detected_codecs; 908 int ret; 909 910 sc = softc; 911 mutex_spin_enter(&sc->sc_intr_lock); 912 913 iot = sc->sc_iot; 914 ioh = sc->sc_ioh; 915 ret = 0; 916 /* get status from the interrupt status register */ 917 status = bus_space_read_4(iot, ioh, ATI_REG_ISR); 918 919 if (status == 0) { 920 mutex_spin_exit(&sc->sc_intr_lock); 921 return 0; 922 } 923 924 DPRINTF(("%s: (status = %x)\n", device_xname(sc->sc_dev), status)); 925 926 /* check DMA UPDATE flags for input & output */ 927 if (status & ATI_REG_ISR_IN_STATUS) { 928 ret++; DPRINTF(("IN_STATUS\n")); 929 auixp_dma_update(sc, sc->sc_input_dma); 930 } 931 if (status & ATI_REG_ISR_OUT_STATUS) { 932 ret++; DPRINTF(("OUT_STATUS\n")); 933 auixp_dma_update(sc, sc->sc_output_dma); 934 } 935 936 /* XXX XRUN flags not used/needed yet; should i implement it? XXX */ 937 /* acknowledge the interrupts nevertheless */ 938 if (status & ATI_REG_ISR_IN_XRUN) { 939 ret++; DPRINTF(("IN_XRUN\n")); 940 /* auixp_dma_xrun(sc, sc->sc_input_dma); */ 941 } 942 if (status & ATI_REG_ISR_OUT_XRUN) { 943 ret++; DPRINTF(("OUT_XRUN\n")); 944 /* auixp_dma_xrun(sc, sc->sc_output_dma); */ 945 } 946 947 /* check if we are looking for codec detection */ 948 if (status & CODEC_CHECK_BITS) { 949 ret++; 950 /* mark missing codecs as not ready */ 951 detected_codecs = status & CODEC_CHECK_BITS; 952 sc->sc_codec_not_ready_bits |= detected_codecs; 953 954 /* disable detected interrupt sources */ 955 enable = bus_space_read_4(iot, ioh, ATI_REG_IER); 956 enable &= ~detected_codecs; 957 bus_space_write_4(iot, ioh, ATI_REG_IER, enable); 958 } 959 960 /* acknowledge interrupt sources */ 961 bus_space_write_4(iot, ioh, ATI_REG_ISR, status); 962 963 mutex_spin_exit(&sc->sc_intr_lock); 964 return ret; 965 } 966 967 968 /* allocate memory for dma purposes; on failure of any of the steps, roll back */ 969 static int 970 auixp_allocmem(struct auixp_softc *sc, size_t size, 971 size_t align, struct auixp_dma *dma) 972 { 973 int error; 974 975 /* remember size */ 976 dma->size = size; 977 978 /* allocate DMA safe memory but in just one segment for now :( */ 979 error = bus_dmamem_alloc(sc->sc_dmat, dma->size, align, 0, 980 dma->segs, sizeof(dma->segs) / sizeof(dma->segs[0]), &dma->nsegs, 981 BUS_DMA_WAITOK); 982 if (error) 983 return error; 984 985 /* 986 * map allocated memory into kernel virtual address space and keep it 987 * coherent with the CPU. 988 */ 989 error = bus_dmamem_map(sc->sc_dmat, dma->segs, dma->nsegs, dma->size, 990 &dma->addr, BUS_DMA_WAITOK | BUS_DMA_COHERENT); 991 if (error) 992 goto free; 993 994 /* allocate associated dma handle and initialize it. */ 995 error = bus_dmamap_create(sc->sc_dmat, dma->size, 1, dma->size, 0, 996 BUS_DMA_WAITOK, &dma->map); 997 if (error) 998 goto unmap; 999 1000 /* 1001 * load the dma handle with mappings for a dma transfer; all pages 1002 * need to be wired. 1003 */ 1004 error = bus_dmamap_load(sc->sc_dmat, dma->map, dma->addr, dma->size, NULL, 1005 BUS_DMA_WAITOK); 1006 if (error) 1007 goto destroy; 1008 1009 return 0; 1010 1011 destroy: 1012 bus_dmamap_destroy(sc->sc_dmat, dma->map); 1013 unmap: 1014 bus_dmamem_unmap(sc->sc_dmat, dma->addr, dma->size); 1015 free: 1016 bus_dmamem_free(sc->sc_dmat, dma->segs, dma->nsegs); 1017 1018 return error; 1019 } 1020 1021 1022 /* undo dma mapping and release memory allocated */ 1023 static int 1024 auixp_freemem(struct auixp_softc *sc, struct auixp_dma *p) 1025 { 1026 1027 bus_dmamap_unload(sc->sc_dmat, p->map); 1028 bus_dmamap_destroy(sc->sc_dmat, p->map); 1029 bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size); 1030 bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs); 1031 1032 return 0; 1033 } 1034 1035 1036 /* memory map dma memory */ 1037 static paddr_t 1038 auixp_mappage(void *hdl, void *mem, off_t off, int prot) 1039 { 1040 struct auixp_codec *co; 1041 struct auixp_softc *sc; 1042 struct auixp_dma *p; 1043 1044 co = (struct auixp_codec *) hdl; 1045 sc = co->sc; 1046 /* for sanity */ 1047 if (off < 0) 1048 return -1; 1049 1050 /* look up allocated DMA area */ 1051 SLIST_FOREACH(p, &sc->sc_dma_list, dma_chain) { 1052 if (KERNADDR(p) == mem) 1053 break; 1054 } 1055 1056 /* have we found it ? */ 1057 if (!p) 1058 return -1; 1059 1060 /* return mmap'd region */ 1061 return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nsegs, 1062 off, prot, BUS_DMA_WAITOK); 1063 } 1064 1065 1066 /* 1067 * Attachment section 1068 */ 1069 1070 /* Is it my hardware? */ 1071 static int 1072 auixp_match(device_t dev, cfdata_t match, void *aux) 1073 { 1074 struct pci_attach_args *pa; 1075 1076 pa = (struct pci_attach_args *)aux; 1077 switch(PCI_VENDOR(pa->pa_id)) { 1078 case PCI_VENDOR_ATI: 1079 switch(PCI_PRODUCT(pa->pa_id)) { 1080 case PCI_PRODUCT_ATI_IXP_AUDIO_200: 1081 case PCI_PRODUCT_ATI_IXP_AUDIO_300: 1082 case PCI_PRODUCT_ATI_IXP_AUDIO_400: 1083 return 1; 1084 } 1085 } 1086 1087 return 0; 1088 } 1089 1090 1091 /* it is... now hook up and set up the resources we need */ 1092 static void 1093 auixp_attach(device_t parent, device_t self, void *aux) 1094 { 1095 struct auixp_softc *sc; 1096 struct pci_attach_args *pa; 1097 pcitag_t tag; 1098 pci_chipset_tag_t pc; 1099 pci_intr_handle_t ih; 1100 const struct auixp_card_type *card; 1101 const char *intrstr; 1102 uint32_t data; 1103 int error; 1104 1105 sc = device_private(self); 1106 sc->sc_dev = self; 1107 pa = (struct pci_attach_args *)aux; 1108 tag = pa->pa_tag; 1109 pc = pa->pa_pc; 1110 #ifdef DEBUG_AUIXP 1111 static_sc = sc; 1112 #endif 1113 1114 /* print information confirming attachment */ 1115 pci_aprint_devinfo(pa, "Audio controller"); 1116 1117 /* set up details from our set of known `cards'/chips */ 1118 for (card = auixp_card_types; card->pci_vendor_id; card++) 1119 if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id && 1120 PCI_PRODUCT(pa->pa_id) == card->pci_product_id) { 1121 sc->type = card->type; 1122 break; 1123 } 1124 1125 /* device only has 32 bit non prefetchable memory */ 1126 /* set MEM space access and enable the card's busmastering */ 1127 data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 1128 data |= (PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE); 1129 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data); 1130 1131 /* map memory; its not sized -> what is the size? max PCI slot size? */ 1132 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_MEM, 0, 1133 &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) { 1134 aprint_error_dev(sc->sc_dev, "can't map memory space\n"); 1135 return; 1136 } 1137 1138 /* Initialize softc */ 1139 sc->sc_tag = tag; 1140 sc->sc_pct = pc; 1141 sc->sc_dmat = pa->pa_dmat; 1142 SLIST_INIT(&sc->sc_dma_list); 1143 1144 /* get us the auixp_dma structures */ 1145 auixp_allocate_dma_chain(sc, &sc->sc_output_dma); 1146 auixp_allocate_dma_chain(sc, &sc->sc_input_dma); 1147 1148 /* when that fails we are dead in the water */ 1149 if (!sc->sc_output_dma || !sc->sc_input_dma) 1150 return; 1151 1152 #if 0 1153 /* could preliminary program DMA chain */ 1154 auixp_program_dma_chain(sc, sc->sc_output_dma); 1155 auixp_program_dma_chain(sc, sc->sc_input_dma); 1156 #endif 1157 1158 /* map interrupt on the pci bus */ 1159 if (pci_intr_map(pa, &ih)) { 1160 aprint_error_dev(sc->sc_dev, "can't map interrupt\n"); 1161 return; 1162 } 1163 1164 /* where are we connected at ? */ 1165 intrstr = pci_intr_string(pc, ih); 1166 1167 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 1168 mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO); 1169 1170 /* establish interrupt routine hookup at IPL_AUDIO level */ 1171 sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, auixp_intr, self); 1172 if (sc->sc_ih == NULL) { 1173 aprint_error_dev(sc->sc_dev, "can't establish interrupt"); 1174 if (intrstr != NULL) 1175 aprint_error(" at %s", intrstr); 1176 aprint_error("\n"); 1177 return; 1178 } 1179 aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr); 1180 1181 /* power up chip */ 1182 if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self, 1183 pci_activate_null)) && error != EOPNOTSUPP) { 1184 aprint_error_dev(sc->sc_dev, "cannot activate %d\n", 1185 error); 1186 return; 1187 } 1188 1189 /* init chip */ 1190 if (auixp_init(sc) == -1) { 1191 aprint_error_dev(sc->sc_dev, "auixp_attach: unable to initialize the card\n"); 1192 return; 1193 } 1194 1195 if (!pmf_device_register(self, NULL, auixp_resume)) 1196 aprint_error_dev(self, "couldn't establish power handler\n"); 1197 1198 /* 1199 * delay further configuration of codecs and audio after interrupts 1200 * are enabled. 1201 */ 1202 config_interrupts(self, auixp_post_config); 1203 } 1204 1205 1206 /* called from autoconfigure system when interrupts are enabled */ 1207 static void 1208 auixp_post_config(device_t self) 1209 { 1210 struct auixp_softc *sc; 1211 struct auixp_codec *codec; 1212 int codec_nr; 1213 int res, i; 1214 1215 sc = device_private(self); 1216 /* detect the AC97 codecs */ 1217 auixp_autodetect_codecs(sc); 1218 1219 /* setup audio translation formats : following codec0 (!) */ 1220 codec = &sc->sc_codec[0]; 1221 if (!codec->present) { 1222 /* nothing??? then invalidate all formats */ 1223 for (i = 0; i < AUIXP_NFORMATS; i++) { 1224 AUFMT_INVALIDATE(&sc->sc_formats[i]); 1225 } 1226 return; 1227 } 1228 1229 /* copy formats and invalidate entries not suitable for codec0 */ 1230 memcpy(sc->sc_formats, auixp_formats, sizeof(auixp_formats)); 1231 mutex_enter(&sc->sc_lock); 1232 sc->has_4ch = AC97_IS_4CH(codec->codec_if); 1233 sc->has_6ch = AC97_IS_6CH(codec->codec_if); 1234 sc->is_fixed = AC97_IS_FIXED_RATE(codec->codec_if); 1235 sc->has_spdif = AC97_HAS_SPDIF(codec->codec_if); 1236 mutex_exit(&sc->sc_lock); 1237 1238 for (i = 0; i < AUIXP_NFORMATS; i++) { 1239 if (sc->is_fixed) { 1240 sc->sc_formats[i].frequency_type = 1; 1241 sc->sc_formats[i].frequency[0] = 48000; 1242 } 1243 switch (sc->sc_formats[i].channels) { 1244 case 4 : 1245 if (sc->has_4ch) 1246 break; 1247 AUFMT_INVALIDATE(&sc->sc_formats[i]); 1248 break; 1249 case 6 : 1250 if (sc->has_6ch) 1251 break; 1252 AUFMT_INVALIDATE(&sc->sc_formats[i]); 1253 break; 1254 default : 1255 break; 1256 } 1257 } 1258 1259 /* 1260 * Create all encodings (and/or -translations) based on the formats 1261 * supported. */ 1262 res = auconv_create_encodings(sc->sc_formats, AUIXP_NFORMATS, 1263 &sc->sc_encodings); 1264 if (res) { 1265 printf("%s: auconv_create_encodings failed; " 1266 "no attachments\n", device_xname(sc->sc_dev)); 1267 return; 1268 } 1269 1270 if (sc->has_spdif) { 1271 aprint_normal_dev(sc->sc_dev, "codec spdif support detected but disabled " 1272 "for now\n"); 1273 sc->has_spdif = 0; 1274 } 1275 1276 /* fill in the missing details about the dma channels. */ 1277 /* for output */ 1278 sc->sc_output_dma->linkptr = ATI_REG_OUT_DMA_LINKPTR; 1279 sc->sc_output_dma->dma_enable_bit = ATI_REG_CMD_OUT_DMA_EN | 1280 ATI_REG_CMD_SEND_EN; 1281 /* have spdif? then this too! XXX not seeing LED yet! XXX */ 1282 if (sc->has_spdif) 1283 sc->sc_output_dma->dma_enable_bit |= ATI_REG_CMD_SPDF_OUT_EN; 1284 1285 /* and for input */ 1286 sc->sc_input_dma->linkptr = ATI_REG_IN_DMA_LINKPTR; 1287 sc->sc_input_dma->dma_enable_bit = ATI_REG_CMD_IN_DMA_EN | 1288 ATI_REG_CMD_RECEIVE_EN; 1289 1290 /* attach audio devices for all detected codecs */ 1291 /* XXX wise? look at other multiple-codec able chipsets XXX */ 1292 for (codec_nr = 0; codec_nr < ATI_IXP_CODECS; codec_nr++) { 1293 codec = &sc->sc_codec[codec_nr]; 1294 if (codec->present) 1295 audio_attach_mi(&auixp_hw_if, codec, sc->sc_dev); 1296 } 1297 1298 /* done! now enable all interrupts we can service */ 1299 auixp_enable_interrupts(sc); 1300 } 1301 1302 static void 1303 auixp_enable_interrupts(struct auixp_softc *sc) 1304 { 1305 bus_space_tag_t iot; 1306 bus_space_handle_t ioh; 1307 uint32_t value; 1308 1309 iot = sc->sc_iot; 1310 ioh = sc->sc_ioh; 1311 1312 mutex_spin_enter(&sc->sc_intr_lock); 1313 1314 /* clear all pending */ 1315 bus_space_write_4(iot, ioh, ATI_REG_ISR, 0xffffffff); 1316 1317 /* enable all relevant interrupt sources we can handle */ 1318 value = bus_space_read_4(iot, ioh, ATI_REG_IER); 1319 1320 value |= ATI_REG_IER_IO_STATUS_EN; 1321 #ifdef notyet 1322 value |= ATI_REG_IER_IN_XRUN_EN; 1323 value |= ATI_REG_IER_OUT_XRUN_EN; 1324 1325 value |= ATI_REG_IER_SPDIF_XRUN_EN; 1326 value |= ATI_REG_IER_SPDF_STATUS_EN; 1327 #endif 1328 1329 bus_space_write_4(iot, ioh, ATI_REG_IER, value); 1330 1331 mutex_spin_exit(&sc->sc_intr_lock); 1332 } 1333 1334 1335 static void 1336 auixp_disable_interrupts(struct auixp_softc *sc) 1337 { 1338 bus_space_tag_t iot; 1339 bus_space_handle_t ioh; 1340 1341 iot = sc->sc_iot; 1342 ioh = sc->sc_ioh; 1343 1344 mutex_spin_enter(&sc->sc_intr_lock); 1345 1346 /* disable all interrupt sources */ 1347 bus_space_write_4(iot, ioh, ATI_REG_IER, 0); 1348 1349 /* clear all pending */ 1350 bus_space_write_4(iot, ioh, ATI_REG_ISR, 0xffffffff); 1351 1352 mutex_spin_exit(&sc->sc_intr_lock); 1353 } 1354 1355 1356 /* dismantle what we've set up by undoing setup */ 1357 static int 1358 auixp_detach(device_t self, int flags) 1359 { 1360 struct auixp_softc *sc; 1361 1362 sc = device_private(self); 1363 /* XXX shouldn't we just reset the chip? XXX */ 1364 /* 1365 * should we explicitly disable interrupt generation and acknowledge 1366 * what's left on? better be safe than sorry. 1367 */ 1368 auixp_disable_interrupts(sc); 1369 1370 /* tear down .... */ 1371 config_detach(sc->sc_dev, flags); /* XXX OK? XXX */ 1372 pmf_device_deregister(self); 1373 1374 if (sc->sc_ih != NULL) 1375 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 1376 if (sc->sc_ios) 1377 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); 1378 1379 mutex_destroy(&sc->sc_lock); 1380 mutex_destroy(&sc->sc_intr_lock); 1381 1382 return 0; 1383 } 1384 1385 1386 /* 1387 * codec handling 1388 * 1389 * IXP audio support can have upto 3 codecs! are they chained ? or 1390 * alternative outlets with the same audio feed i.e. with different mixer 1391 * settings? XXX does NetBSD support more than one audio codec? XXX 1392 */ 1393 1394 1395 static int 1396 auixp_attach_codec(void *aux, struct ac97_codec_if *codec_if) 1397 { 1398 struct auixp_codec *ixp_codec; 1399 1400 ixp_codec = aux; 1401 ixp_codec->codec_if = codec_if; 1402 ixp_codec->present = 1; 1403 1404 return 0; 1405 } 1406 1407 1408 static int 1409 auixp_read_codec(void *aux, uint8_t reg, uint16_t *result) 1410 { 1411 struct auixp_codec *co; 1412 struct auixp_softc *sc; 1413 bus_space_tag_t iot; 1414 bus_space_handle_t ioh; 1415 uint32_t data; 1416 int timeout; 1417 1418 co = aux; 1419 sc = co->sc; 1420 iot = sc->sc_iot; 1421 ioh = sc->sc_ioh; 1422 if (auixp_wait_for_codecs(sc, "read_codec")) 1423 return 0xffff; 1424 1425 /* build up command for reading codec register */ 1426 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) | 1427 ATI_REG_PHYS_OUT_ADDR_EN | 1428 ATI_REG_PHYS_OUT_RW | 1429 co->codec_nr; 1430 1431 bus_space_write_4(iot, ioh, ATI_REG_PHYS_OUT_ADDR, data); 1432 1433 if (auixp_wait_for_codecs(sc, "read_codec")) 1434 return 0xffff; 1435 1436 /* wait until codec info is clocked in */ 1437 timeout = 500; /* 500*2 usec -> 0.001 sec */ 1438 do { 1439 data = bus_space_read_4(iot, ioh, ATI_REG_PHYS_IN_ADDR); 1440 if (data & ATI_REG_PHYS_IN_READ_FLAG) { 1441 DPRINTF(("read ac'97 codec reg 0x%x = 0x%08x\n", 1442 reg, data >> ATI_REG_PHYS_IN_DATA_SHIFT) 1443 ); 1444 *result = data >> ATI_REG_PHYS_IN_DATA_SHIFT; 1445 return 0; 1446 } 1447 DELAY(2); 1448 timeout--; 1449 } while (timeout > 0); 1450 1451 if (reg < 0x7c) 1452 printf("%s: codec read timeout! (reg %x)\n", 1453 device_xname(sc->sc_dev), reg); 1454 1455 return 0xffff; 1456 } 1457 1458 1459 static int 1460 auixp_write_codec(void *aux, uint8_t reg, uint16_t data) 1461 { 1462 struct auixp_codec *co; 1463 struct auixp_softc *sc; 1464 bus_space_tag_t iot; 1465 bus_space_handle_t ioh; 1466 uint32_t value; 1467 1468 DPRINTF(("write ac'97 codec reg 0x%x = 0x%08x\n", reg, data)); 1469 co = aux; 1470 sc = co->sc; 1471 iot = sc->sc_iot; 1472 ioh = sc->sc_ioh; 1473 if (auixp_wait_for_codecs(sc, "write_codec")) 1474 return -1; 1475 1476 /* build up command for writing codec register */ 1477 value = (((uint32_t) data) << ATI_REG_PHYS_OUT_DATA_SHIFT) | 1478 (((uint32_t) reg) << ATI_REG_PHYS_OUT_ADDR_SHIFT) | 1479 ATI_REG_PHYS_OUT_ADDR_EN | 1480 co->codec_nr; 1481 1482 bus_space_write_4(iot, ioh, ATI_REG_PHYS_OUT_ADDR, value); 1483 1484 return 0; 1485 } 1486 1487 1488 static int 1489 auixp_reset_codec(void *aux) 1490 { 1491 1492 /* nothing to be done? */ 1493 return 0; 1494 } 1495 1496 1497 static enum ac97_host_flags 1498 auixp_flags_codec(void *aux) 1499 { 1500 struct auixp_codec *ixp_codec; 1501 1502 ixp_codec = aux; 1503 return ixp_codec->codec_flags; 1504 } 1505 1506 1507 static int 1508 auixp_wait_for_codecs(struct auixp_softc *sc, const char *func) 1509 { 1510 bus_space_tag_t iot; 1511 bus_space_handle_t ioh; 1512 uint32_t value; 1513 int timeout; 1514 1515 iot = sc->sc_iot; 1516 ioh = sc->sc_ioh; 1517 /* wait until all codec transfers are done */ 1518 timeout = 500; /* 500*2 usec -> 0.001 sec */ 1519 do { 1520 value = bus_space_read_4(iot, ioh, ATI_REG_PHYS_OUT_ADDR); 1521 if ((value & ATI_REG_PHYS_OUT_ADDR_EN) == 0) 1522 return 0; 1523 1524 DELAY(2); 1525 timeout--; 1526 } while (timeout > 0); 1527 1528 printf("%s: %s: timed out\n", func, device_xname(sc->sc_dev)); 1529 return -1; 1530 } 1531 1532 1533 1534 static void 1535 auixp_autodetect_codecs(struct auixp_softc *sc) 1536 { 1537 bus_space_tag_t iot; 1538 bus_space_handle_t ioh; 1539 struct auixp_codec *codec; 1540 int timeout, codec_nr; 1541 1542 iot = sc->sc_iot; 1543 ioh = sc->sc_ioh; 1544 /* ATI IXP can have upto 3 codecs; mark all codecs as not existing */ 1545 sc->sc_codec_not_ready_bits = 0; 1546 sc->sc_num_codecs = 0; 1547 1548 /* enable all codecs to interrupt as well as the new frame interrupt */ 1549 bus_space_write_4(iot, ioh, ATI_REG_IER, CODEC_CHECK_BITS); 1550 1551 /* wait for the interrupts to happen */ 1552 timeout = 100; /* 100.000 usec -> 0.1 sec */ 1553 1554 while (timeout > 0) { 1555 DELAY(1000); 1556 if (sc->sc_codec_not_ready_bits) 1557 break; 1558 timeout--; 1559 } 1560 1561 if (timeout == 0) 1562 printf("%s: WARNING: timeout during codec detection; " 1563 "codecs might be present but haven't interrupted\n", 1564 device_xname(sc->sc_dev)); 1565 1566 /* disable all interrupts for now */ 1567 auixp_disable_interrupts(sc); 1568 1569 /* Attach AC97 host interfaces */ 1570 for (codec_nr = 0; codec_nr < ATI_IXP_CODECS; codec_nr++) { 1571 codec = &sc->sc_codec[codec_nr]; 1572 memset(codec, 0, sizeof(struct auixp_codec)); 1573 1574 codec->sc = sc; 1575 codec->codec_nr = codec_nr; 1576 codec->present = 0; 1577 1578 codec->host_if.arg = codec; 1579 codec->host_if.attach = auixp_attach_codec; 1580 codec->host_if.read = auixp_read_codec; 1581 codec->host_if.write = auixp_write_codec; 1582 codec->host_if.reset = auixp_reset_codec; 1583 codec->host_if.flags = auixp_flags_codec; 1584 } 1585 1586 if (!(sc->sc_codec_not_ready_bits & ATI_REG_ISR_CODEC0_NOT_READY)) { 1587 /* codec 0 present */ 1588 DPRINTF(("auixp : YAY! codec 0 present!\n")); 1589 if (ac97_attach(&sc->sc_codec[0].host_if, sc->sc_dev, 1590 &sc->sc_lock) == 0) 1591 sc->sc_num_codecs++; 1592 } 1593 1594 if (!(sc->sc_codec_not_ready_bits & ATI_REG_ISR_CODEC1_NOT_READY)) { 1595 /* codec 1 present */ 1596 DPRINTF(("auixp : YAY! codec 1 present!\n")); 1597 if (ac97_attach(&sc->sc_codec[1].host_if, sc->sc_dev, 1598 &sc->sc_lock) == 0) 1599 sc->sc_num_codecs++; 1600 } 1601 1602 if (!(sc->sc_codec_not_ready_bits & ATI_REG_ISR_CODEC2_NOT_READY)) { 1603 /* codec 2 present */ 1604 DPRINTF(("auixp : YAY! codec 2 present!\n")); 1605 if (ac97_attach(&sc->sc_codec[2].host_if, sc->sc_dev, 1606 &sc->sc_lock) == 0) 1607 sc->sc_num_codecs++; 1608 } 1609 1610 if (sc->sc_num_codecs == 0) { 1611 printf("%s: no codecs detected or " 1612 "no codecs managed to initialise\n", 1613 device_xname(sc->sc_dev)); 1614 return; 1615 } 1616 1617 } 1618 1619 1620 1621 /* initialisation routines */ 1622 1623 static void 1624 auixp_disable_dma(struct auixp_softc *sc, struct auixp_dma *dma) 1625 { 1626 bus_space_tag_t iot; 1627 bus_space_handle_t ioh; 1628 uint32_t value; 1629 1630 iot = sc->sc_iot; 1631 ioh = sc->sc_ioh; 1632 /* lets not stress the DMA engine more than nessisary */ 1633 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1634 if (value & dma->dma_enable_bit) { 1635 value &= ~dma->dma_enable_bit; 1636 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 1637 } 1638 } 1639 1640 1641 static void 1642 auixp_enable_dma(struct auixp_softc *sc, struct auixp_dma *dma) 1643 { 1644 bus_space_tag_t iot; 1645 bus_space_handle_t ioh; 1646 uint32_t value; 1647 1648 iot = sc->sc_iot; 1649 ioh = sc->sc_ioh; 1650 /* lets not stress the DMA engine more than nessisary */ 1651 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1652 if (!(value & dma->dma_enable_bit)) { 1653 value |= dma->dma_enable_bit; 1654 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 1655 } 1656 } 1657 1658 1659 static void 1660 auixp_reset_aclink(struct auixp_softc *sc) 1661 { 1662 bus_space_tag_t iot; 1663 bus_space_handle_t ioh; 1664 uint32_t value, timeout; 1665 1666 iot = sc->sc_iot; 1667 ioh = sc->sc_ioh; 1668 1669 /* if power is down, power it up */ 1670 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1671 if (value & ATI_REG_CMD_POWERDOWN) { 1672 printf("%s: powering up\n", device_xname(sc->sc_dev)); 1673 1674 /* explicitly enable power */ 1675 value &= ~ATI_REG_CMD_POWERDOWN; 1676 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 1677 1678 /* have to wait at least 10 usec for it to initialise */ 1679 DELAY(20); 1680 }; 1681 1682 printf("%s: soft resetting aclink\n", device_xname(sc->sc_dev)); 1683 1684 /* perform a soft reset */ 1685 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1686 value |= ATI_REG_CMD_AC_SOFT_RESET; 1687 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 1688 1689 /* need to read the CMD reg and wait aprox. 10 usec to init */ 1690 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1691 DELAY(20); 1692 1693 /* clear soft reset flag again */ 1694 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1695 value &= ~ATI_REG_CMD_AC_SOFT_RESET; 1696 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 1697 1698 /* check if the ac-link is working; reset device otherwise */ 1699 timeout = 10; 1700 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1701 while (!(value & ATI_REG_CMD_ACLINK_ACTIVE)) { 1702 printf("%s: not up; resetting aclink hardware\n", 1703 device_xname(sc->sc_dev)); 1704 1705 /* dip aclink reset but keep the acsync */ 1706 value &= ~ATI_REG_CMD_AC_RESET; 1707 value |= ATI_REG_CMD_AC_SYNC; 1708 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 1709 1710 /* need to read CMD again and wait again (clocking in issue?) */ 1711 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1712 DELAY(20); 1713 1714 /* assert aclink reset again */ 1715 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1716 value |= ATI_REG_CMD_AC_RESET; 1717 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 1718 1719 /* check if its active now */ 1720 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1721 1722 timeout--; 1723 if (timeout == 0) break; 1724 }; 1725 1726 if (timeout == 0) { 1727 printf("%s: giving up aclink reset\n", device_xname(sc->sc_dev)); 1728 }; 1729 if (timeout != 10) { 1730 printf("%s: aclink hardware reset successful\n", 1731 device_xname(sc->sc_dev)); 1732 }; 1733 1734 /* assert reset and sync for safety */ 1735 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1736 value |= ATI_REG_CMD_AC_SYNC | ATI_REG_CMD_AC_RESET; 1737 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 1738 } 1739 1740 1741 /* chip hard init */ 1742 static int 1743 auixp_init(struct auixp_softc *sc) 1744 { 1745 bus_space_tag_t iot; 1746 bus_space_handle_t ioh; 1747 uint32_t value; 1748 1749 iot = sc->sc_iot; 1750 ioh = sc->sc_ioh; 1751 /* disable all interrupts and clear all sources */ 1752 auixp_disable_interrupts(sc); 1753 1754 /* clear all DMA enables (preserving rest of settings) */ 1755 value = bus_space_read_4(iot, ioh, ATI_REG_CMD); 1756 value &= ~( ATI_REG_CMD_IN_DMA_EN | 1757 ATI_REG_CMD_OUT_DMA_EN | 1758 ATI_REG_CMD_SPDF_OUT_EN ); 1759 bus_space_write_4(iot, ioh, ATI_REG_CMD, value); 1760 1761 /* Reset AC-link */ 1762 auixp_reset_aclink(sc); 1763 1764 /* 1765 * codecs get auto-detected later 1766 * 1767 * note: we are NOT enabling interrupts yet, no codecs have been 1768 * detected yet nor is anything else set up 1769 */ 1770 1771 return 0; 1772 } 1773 1774 static bool 1775 auixp_resume(device_t dv, const pmf_qual_t *qual) 1776 { 1777 struct auixp_softc *sc = device_private(dv); 1778 1779 mutex_enter(&sc->sc_lock); 1780 auixp_reset_codec(sc); 1781 delay(1000); 1782 (sc->sc_codec[0].codec_if->vtbl->restore_ports)(sc->sc_codec[0].codec_if); 1783 mutex_exit(&sc->sc_lock); 1784 1785 return true; 1786 } 1787 1788 #ifdef DEBUG_AUIXP 1789 1790 static void 1791 auixp_dumpreg(void) 1792 { 1793 struct auixp_softc *sc; 1794 bus_space_tag_t iot; 1795 bus_space_handle_t ioh; 1796 int i; 1797 1798 sc = static_sc; 1799 iot = sc->sc_iot; 1800 ioh = sc->sc_ioh; 1801 printf("%s register dump:\n", device_xname(sc->sc_dev)); 1802 for (i = 0; i < 256; i+=4) { 1803 printf("\t0x%02x: 0x%08x\n", i, bus_space_read_4(iot, ioh, i)); 1804 } 1805 printf("\n"); 1806 } 1807 #endif 1808 1809 static void 1810 auixp_get_locks(void *addr, kmutex_t **intr, kmutex_t **proc) 1811 { 1812 struct auixp_codec *co = addr; 1813 struct auixp_softc *sc = co->sc; 1814 1815 *intr = &sc->sc_intr_lock; 1816 *proc = &sc->sc_lock; 1817 } 1818
Indexes created Thu Oct 02 14:10:14 GMT 2025