via82c686.c revision 254263
11590Srgrimes/*- 21590Srgrimes * Copyright (c) 2000 David Jones <dej@ox.org> 31590Srgrimes * All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 141590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 151590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 161590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 171590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 181590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 191590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 201590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 211590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 221590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 231590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 241590Srgrimes * SUCH DAMAGE. 251590Srgrimes */ 261590Srgrimes 271590Srgrimes#ifdef HAVE_KERNEL_OPTION_HEADERS 281590Srgrimes#include "opt_snd.h" 291590Srgrimes#endif 301590Srgrimes 311590Srgrimes#include <dev/sound/pcm/sound.h> 321590Srgrimes#include <dev/sound/pcm/ac97.h> 331590Srgrimes 341590Srgrimes#include <dev/pci/pcireg.h> 3541568Sarchie#include <dev/pci/pcivar.h> 361590Srgrimes#include <sys/sysctl.h> 371590Srgrimes 381590Srgrimes#include <dev/sound/pci/via82c686.h> 391590Srgrimes 401590SrgrimesSND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/pci/via82c686.c 254263 2013-08-12 23:30:01Z scottl $"); 4153508Scharnier 4253508Scharnier#define VIA_PCI_ID 0x30581106 4353508Scharnier#define NSEGS 4 /* Number of segments in SGD table */ 4453508Scharnier 4553508Scharnier#define SEGS_PER_CHAN (NSEGS/2) 461590Srgrimes 471590Srgrimes#define TIMEOUT 50 481590Srgrimes#define VIA_DEFAULT_BUFSZ 0x1000 491590Srgrimes 501590Srgrimes#undef DEB 511590Srgrimes#define DEB(x) 521590Srgrimes 531590Srgrimes/* we rely on this struct being packed to 64 bits */ 541590Srgrimesstruct via_dma_op { 551590Srgrimes u_int32_t ptr; 561590Srgrimes u_int32_t flags; 571590Srgrimes#define VIA_DMAOP_EOL 0x80000000 581590Srgrimes#define VIA_DMAOP_FLAG 0x40000000 591590Srgrimes#define VIA_DMAOP_STOP 0x20000000 601590Srgrimes#define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF) 611590Srgrimes}; 621590Srgrimes 631590Srgrimesstruct via_info; 641590Srgrimes 651590Srgrimesstruct via_chinfo { 661590Srgrimes struct via_info *parent; 671590Srgrimes struct pcm_channel *channel; 681590Srgrimes struct snd_dbuf *buffer; 691590Srgrimes struct via_dma_op *sgd_table; 701590Srgrimes bus_addr_t sgd_addr; 711590Srgrimes int dir, blksz; 721590Srgrimes int base, count, mode, ctrl; 731590Srgrimes}; 741590Srgrimes 751590Srgrimesstruct via_info { 761590Srgrimes bus_space_tag_t st; 771590Srgrimes bus_space_handle_t sh; 781590Srgrimes bus_dma_tag_t parent_dmat; 791590Srgrimes bus_dma_tag_t sgd_dmat; 801590Srgrimes bus_dmamap_t sgd_dmamap; 811590Srgrimes bus_addr_t sgd_addr; 8224360Simp 831590Srgrimes struct resource *reg, *irq; 841590Srgrimes int regid, irqid; 851590Srgrimes void *ih; 861590Srgrimes struct ac97_info *codec; 871590Srgrimes 881590Srgrimes unsigned int bufsz; 891590Srgrimes 901590Srgrimes struct via_chinfo pch, rch; 911590Srgrimes struct via_dma_op *sgd_table; 921590Srgrimes u_int16_t codec_caps; 931590Srgrimes struct mtx *lock; 941590Srgrimes}; 951590Srgrimes 961590Srgrimesstatic u_int32_t via_fmt[] = { 971590Srgrimes SND_FORMAT(AFMT_U8, 1, 0), 981590Srgrimes SND_FORMAT(AFMT_U8, 2, 0), 991590Srgrimes SND_FORMAT(AFMT_S16_LE, 1, 0), 1001590Srgrimes SND_FORMAT(AFMT_S16_LE, 2, 0), 1011590Srgrimes 0 1021590Srgrimes}; 1031590Srgrimesstatic struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0}; 1041590Srgrimesstatic struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0}; 1051590Srgrimes 1061590Srgrimesstatic __inline u_int32_t 10753508Scharniervia_rd(struct via_info *via, int regno, int size) 1081590Srgrimes{ 1091590Srgrimes 1101590Srgrimes switch (size) { 1111590Srgrimes case 1: 1121590Srgrimes return bus_space_read_1(via->st, via->sh, regno); 1131590Srgrimes case 2: 1141590Srgrimes return bus_space_read_2(via->st, via->sh, regno); 1151590Srgrimes case 4: 1161590Srgrimes return bus_space_read_4(via->st, via->sh, regno); 1171590Srgrimes default: 1181590Srgrimes return 0xFFFFFFFF; 1191590Srgrimes } 1201590Srgrimes} 1211590Srgrimes 1221590Srgrimes 1231590Srgrimesstatic __inline void 1241590Srgrimesvia_wr(struct via_info *via, int regno, u_int32_t data, int size) 1251590Srgrimes{ 1261590Srgrimes 1271590Srgrimes switch (size) { 1281590Srgrimes case 1: 1291590Srgrimes bus_space_write_1(via->st, via->sh, regno, data); 1301590Srgrimes break; 1311590Srgrimes case 2: 1321590Srgrimes bus_space_write_2(via->st, via->sh, regno, data); 1331590Srgrimes break; 1341590Srgrimes case 4: 1351590Srgrimes bus_space_write_4(via->st, via->sh, regno, data); 1361590Srgrimes break; 1371590Srgrimes } 1381590Srgrimes} 13977586Sru 1401590Srgrimes/* -------------------------------------------------------------------- */ 1411590Srgrimes/* Codec interface */ 1421590Srgrimes 1431590Srgrimesstatic int 1441590Srgrimesvia_waitready_codec(struct via_info *via) 1451590Srgrimes{ 1461590Srgrimes int i; 1471590Srgrimes 1481590Srgrimes /* poll until codec not busy */ 1491590Srgrimes for (i = 0; (i < TIMEOUT) && 1501590Srgrimes (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 1511590Srgrimes DELAY(1); 1521590Srgrimes if (i >= TIMEOUT) { 1531590Srgrimes printf("via: codec busy\n"); 1541590Srgrimes return 1; 1551590Srgrimes } 1561590Srgrimes 1571590Srgrimes return 0; 1581590Srgrimes} 1591590Srgrimes 1601590Srgrimes 1611590Srgrimesstatic int 1621590Srgrimesvia_waitvalid_codec(struct via_info *via) 1631590Srgrimes{ 16453508Scharnier int i; 1651590Srgrimes 1661590Srgrimes /* poll until codec valid */ 1671590Srgrimes for (i = 0; (i < TIMEOUT) && 1681590Srgrimes !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 16937453Sbde DELAY(1); 1701590Srgrimes if (i >= TIMEOUT) { 1711590Srgrimes printf("via: codec invalid\n"); 1721590Srgrimes return 1; 1731590Srgrimes } 1741590Srgrimes 1751590Srgrimes return 0; 1761590Srgrimes} 1771590Srgrimes 1781590Srgrimes 1791590Srgrimesstatic int 18079010Sddvia_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 18179010Sdd{ 1821590Srgrimes struct via_info *via = addr; 1831590Srgrimes 1841590Srgrimes if (via_waitready_codec(via)) return -1; 1851590Srgrimes 1861590Srgrimes via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 1871590Srgrimes 1881590Srgrimes return 0; 1891590Srgrimes} 1901590Srgrimes 1911590Srgrimes 1921590Srgrimesstatic int 1931590Srgrimesvia_read_codec(kobj_t obj, void *addr, int reg) 1941590Srgrimes{ 1951590Srgrimes struct via_info *via = addr; 1961590Srgrimes 1971590Srgrimes if (via_waitready_codec(via)) 1981590Srgrimes return -1; 19937453Sbde 2001590Srgrimes via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 2011590Srgrimes 2021590Srgrimes if (via_waitready_codec(via)) 2031590Srgrimes return -1; 2041590Srgrimes 20577586Sru if (via_waitvalid_codec(via)) 20677586Sru return -1; 2071590Srgrimes 20877586Sru return via_rd(via, VIA_CODEC_CTL, 2); 2091590Srgrimes} 2101590Srgrimes 2111590Srgrimesstatic kobj_method_t via_ac97_methods[] = { 2121590Srgrimes KOBJMETHOD(ac97_read, via_read_codec), 2131590Srgrimes KOBJMETHOD(ac97_write, via_write_codec), 2141590Srgrimes KOBJMETHOD_END 2151590Srgrimes}; 2161590SrgrimesAC97_DECLARE(via_ac97); 2171590Srgrimes 2181590Srgrimes/* -------------------------------------------------------------------- */ 2191590Srgrimes 2201590Srgrimesstatic int 2211590Srgrimesvia_buildsgdt(struct via_chinfo *ch) 2221590Srgrimes{ 2231590Srgrimes u_int32_t phys_addr, flag; 2241590Srgrimes int i, segs, seg_size; 2251590Srgrimes 2261590Srgrimes /* 22737453Sbde * Build the scatter/gather DMA (SGD) table. 2281590Srgrimes * There are four slots in the table: two for play, two for record. 2291590Srgrimes * This creates two half-buffers, one of which is playing; the other 2301590Srgrimes * is feeding. 2311590Srgrimes */ 2321590Srgrimes seg_size = ch->blksz; 2331590Srgrimes segs = sndbuf_getsize(ch->buffer) / seg_size; 2341590Srgrimes phys_addr = sndbuf_getbufaddr(ch->buffer); 2351590Srgrimes 2361590Srgrimes for (i = 0; i < segs; i++) { 2371590Srgrimes flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 2381590Srgrimes ch->sgd_table[i].ptr = phys_addr + (i * seg_size); 2391590Srgrimes ch->sgd_table[i].flags = flag | seg_size; 2401590Srgrimes } 2411590Srgrimes 2421590Srgrimes return 0; 2431590Srgrimes} 2441590Srgrimes 2451590Srgrimes/* channel interface */ 2461590Srgrimesstatic void * 2471590Srgrimesviachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 2481590Srgrimes{ 2491590Srgrimes struct via_info *via = devinfo; 2501590Srgrimes struct via_chinfo *ch; 2511590Srgrimes 2521590Srgrimes snd_mtxlock(via->lock); 25353508Scharnier if (dir == PCMDIR_PLAY) { 2541590Srgrimes ch = &via->pch; 2551590Srgrimes ch->base = VIA_PLAY_DMAOPS_BASE; 256 ch->count = VIA_PLAY_DMAOPS_COUNT; 257 ch->ctrl = VIA_PLAY_CONTROL; 258 ch->mode = VIA_PLAY_MODE; 259 ch->sgd_addr = via->sgd_addr; 260 ch->sgd_table = &via->sgd_table[0]; 261 } else { 262 ch = &via->rch; 263 ch->base = VIA_RECORD_DMAOPS_BASE; 264 ch->count = VIA_RECORD_DMAOPS_COUNT; 265 ch->ctrl = VIA_RECORD_CONTROL; 266 ch->mode = VIA_RECORD_MODE; 267 ch->sgd_addr = via->sgd_addr + sizeof(struct via_dma_op) * SEGS_PER_CHAN; 268 ch->sgd_table = &via->sgd_table[SEGS_PER_CHAN]; 269 } 270 271 ch->parent = via; 272 ch->channel = c; 273 ch->buffer = b; 274 ch->dir = dir; 275 snd_mtxunlock(via->lock); 276 277 if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0) 278 return NULL; 279 280 return ch; 281} 282 283static int 284viachan_setformat(kobj_t obj, void *data, u_int32_t format) 285{ 286 struct via_chinfo *ch = data; 287 struct via_info *via = ch->parent; 288 int mode, mode_set; 289 290 mode_set = 0; 291 if (AFMT_CHANNEL(format) > 1) 292 mode_set |= VIA_RPMODE_STEREO; 293 if (format & AFMT_S16_LE) 294 mode_set |= VIA_RPMODE_16BIT; 295 296 DEB(printf("set format: dir = %d, format=%x\n", ch->dir, format)); 297 snd_mtxlock(via->lock); 298 mode = via_rd(via, ch->mode, 1); 299 mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 300 mode |= mode_set; 301 via_wr(via, ch->mode, mode, 1); 302 snd_mtxunlock(via->lock); 303 304 return 0; 305} 306 307static u_int32_t 308viachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 309{ 310 struct via_chinfo *ch = data; 311 struct via_info *via = ch->parent; 312 int reg; 313 314 /* 315 * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 316 * upsampling is required. 317 * 318 * The VT82C686A does not perform upsampling, and neither do we. 319 * If the codec supports variable-rate audio (i.e. does the upsampling 320 * itself), then negotiate the rate with the codec. Otherwise, 321 * return 48 kHz cuz that's all you got. 322 */ 323 if (via->codec_caps & AC97_EXTCAP_VRA) { 324 reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE; 325 return ac97_setrate(via->codec, reg, speed); 326 } else 327 return 48000; 328} 329 330static u_int32_t 331viachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 332{ 333 struct via_chinfo *ch = data; 334 335 ch->blksz = blocksize; 336 sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz); 337 338 return ch->blksz; 339} 340 341static int 342viachan_trigger(kobj_t obj, void *data, int go) 343{ 344 struct via_chinfo *ch = data; 345 struct via_info *via = ch->parent; 346 struct via_dma_op *ado; 347 bus_addr_t sgd_addr = ch->sgd_addr; 348 349 if (!PCMTRIG_COMMON(go)) 350 return 0; 351 352 ado = ch->sgd_table; 353 DEB(printf("ado located at va=%p pa=%x\n", ado, sgd_addr)); 354 355 snd_mtxlock(via->lock); 356 if (go == PCMTRIG_START) { 357 via_buildsgdt(ch); 358 via_wr(via, ch->base, sgd_addr, 4); 359 via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1); 360 } else 361 via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1); 362 snd_mtxunlock(via->lock); 363 364 DEB(printf("viachan_trigger: go=%d\n", go)); 365 return 0; 366} 367 368static u_int32_t 369viachan_getptr(kobj_t obj, void *data) 370{ 371 struct via_chinfo *ch = data; 372 struct via_info *via = ch->parent; 373 struct via_dma_op *ado; 374 bus_addr_t sgd_addr = ch->sgd_addr; 375 u_int32_t ptr, base, base1, len, seg; 376 377 ado = ch->sgd_table; 378 snd_mtxlock(via->lock); 379 base1 = via_rd(via, ch->base, 4); 380 len = via_rd(via, ch->count, 4); 381 base = via_rd(via, ch->base, 4); 382 if (base != base1) /* Avoid race hazard */ 383 len = via_rd(via, ch->count, 4); 384 snd_mtxunlock(via->lock); 385 386 DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base)); 387 388 /* Base points to SGD segment to do, one past current */ 389 390 /* Determine how many segments have been done */ 391 seg = (base - sgd_addr) / sizeof(struct via_dma_op); 392 if (seg == 0) 393 seg = SEGS_PER_CHAN; 394 395 /* Now work out offset: seg less count */ 396 ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len; 397 if (ch->dir == PCMDIR_REC) { 398 /* DMA appears to operate on memory 'lines' of 32 bytes */ 399 /* so don't return any part line - it isn't in RAM yet */ 400 ptr = ptr & ~0x1f; 401 } 402 403 DEB(printf("return ptr=%u\n", ptr)); 404 return ptr; 405} 406 407static struct pcmchan_caps * 408viachan_getcaps(kobj_t obj, void *data) 409{ 410 struct via_chinfo *ch = data; 411 struct via_info *via = ch->parent; 412 413 return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps; 414} 415 416static kobj_method_t viachan_methods[] = { 417 KOBJMETHOD(channel_init, viachan_init), 418 KOBJMETHOD(channel_setformat, viachan_setformat), 419 KOBJMETHOD(channel_setspeed, viachan_setspeed), 420 KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 421 KOBJMETHOD(channel_trigger, viachan_trigger), 422 KOBJMETHOD(channel_getptr, viachan_getptr), 423 KOBJMETHOD(channel_getcaps, viachan_getcaps), 424 KOBJMETHOD_END 425}; 426CHANNEL_DECLARE(viachan); 427 428/* -------------------------------------------------------------------- */ 429 430static void 431via_intr(void *p) 432{ 433 struct via_info *via = p; 434 435 /* DEB(printf("viachan_intr\n")); */ 436 /* Read channel */ 437 snd_mtxlock(via->lock); 438 if (via_rd(via, VIA_PLAY_STAT, 1) & VIA_RPSTAT_INTR) { 439 via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 440 snd_mtxunlock(via->lock); 441 chn_intr(via->pch.channel); 442 snd_mtxlock(via->lock); 443 } 444 445 /* Write channel */ 446 if (via_rd(via, VIA_RECORD_STAT, 1) & VIA_RPSTAT_INTR) { 447 via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 448 snd_mtxunlock(via->lock); 449 chn_intr(via->rch.channel); 450 return; 451 } 452 snd_mtxunlock(via->lock); 453} 454 455/* 456 * Probe and attach the card 457 */ 458static int 459via_probe(device_t dev) 460{ 461 if (pci_get_devid(dev) == VIA_PCI_ID) { 462 device_set_desc(dev, "VIA VT82C686A"); 463 return BUS_PROBE_DEFAULT; 464 } 465 return ENXIO; 466} 467 468 469static void 470dma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 471{ 472 struct via_info *via = (struct via_info *)p; 473 via->sgd_addr = bds->ds_addr; 474} 475 476 477static int 478via_attach(device_t dev) 479{ 480 struct via_info *via = 0; 481 char status[SND_STATUSLEN]; 482 u_int32_t data, cnt; 483 484 via = malloc(sizeof(*via), M_DEVBUF, M_WAITOK | M_ZERO); 485 via->lock = snd_mtxcreate(device_get_nameunit(dev), 486 "snd_via82c686 softc"); 487 488 pci_enable_busmaster(dev); 489 490 /* Wake up and reset AC97 if necessary */ 491 data = pci_read_config(dev, VIA_AC97STATUS, 1); 492 493 if ((data & VIA_AC97STATUS_RDY) == 0) { 494 /* Cold reset per ac97r2.3 spec (page 95) */ 495 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 496 DELAY(100); /* Wait T_rst_low */ 497 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_NRST, 1); /* Assert high */ 498 DELAY(5); /* Wait T_rst2clk */ 499 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 500 } else { 501 /* Warm reset */ 502 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 503 DELAY(100); 504 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_SYNC, 1); /* Sync */ 505 DELAY(5); /* Wait T_sync_high */ 506 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 507 DELAY(5); /* Wait T_sync2clk */ 508 } 509 510 /* Power everything up */ 511 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_DESIRED, 1); 512 513 /* Wait for codec to become ready (largest reported delay here 310ms) */ 514 for (cnt = 0; cnt < 2000; cnt++) { 515 data = pci_read_config(dev, VIA_AC97STATUS, 1); 516 if (data & VIA_AC97STATUS_RDY) 517 break; 518 DELAY(5000); 519 } 520 521 via->regid = PCIR_BAR(0); 522 via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 523 &via->regid, RF_ACTIVE); 524 if (!via->reg) { 525 device_printf(dev, "cannot allocate bus resource."); 526 goto bad; 527 } 528 via->st = rman_get_bustag(via->reg); 529 via->sh = rman_get_bushandle(via->reg); 530 531 via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536); 532 533 via->irqid = 0; 534 via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid, 535 RF_ACTIVE | RF_SHAREABLE); 536 if (!via->irq || snd_setup_intr(dev, via->irq, INTR_MPSAFE, via_intr, via, &via->ih)) { 537 device_printf(dev, "unable to map interrupt\n"); 538 goto bad; 539 } 540 541 via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 542 via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 543 544 via->codec = AC97_CREATE(dev, via, via_ac97); 545 if (!via->codec) 546 goto bad; 547 548 if (mixer_init(dev, ac97_getmixerclass(), via->codec)) 549 goto bad; 550 551 via->codec_caps = ac97_getextcaps(via->codec); 552 ac97_setextmode(via->codec, 553 via->codec_caps & (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM)); 554 555 /* DMA tag for buffers */ 556 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2, 557 /*boundary*/0, 558 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 559 /*highaddr*/BUS_SPACE_MAXADDR, 560 /*filter*/NULL, /*filterarg*/NULL, 561 /*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff, 562 /*flags*/0, /*lockfunc*/NULL, 563 /*lockarg*/NULL, &via->parent_dmat) != 0) { 564 device_printf(dev, "unable to create dma tag\n"); 565 goto bad; 566 } 567 568 /* 569 * DMA tag for SGD table. The 686 uses scatter/gather DMA and 570 * requires a list in memory of work to do. We need only 16 bytes 571 * for this list, and it is wasteful to allocate 16K. 572 */ 573 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2, 574 /*boundary*/0, 575 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 576 /*highaddr*/BUS_SPACE_MAXADDR, 577 /*filter*/NULL, /*filterarg*/NULL, 578 /*maxsize*/NSEGS * sizeof(struct via_dma_op), 579 /*nsegments*/1, /*maxsegz*/0x3ffff, 580 /*flags*/0, /*lockfunc*/NULL, 581 /*lockarg*/NULL, &via->sgd_dmat) != 0) { 582 device_printf(dev, "unable to create dma tag\n"); 583 goto bad; 584 } 585 586 if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table, 587 BUS_DMA_NOWAIT, &via->sgd_dmamap) != 0) 588 goto bad; 589 if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table, 590 NSEGS * sizeof(struct via_dma_op), dma_cb, via, 0) != 0) 591 goto bad; 592 593 snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld %s", 594 rman_get_start(via->reg), rman_get_start(via->irq), 595 PCM_KLDSTRING(snd_via82c686)); 596 597 /* Register */ 598 if (pcm_register(dev, via, 1, 1)) goto bad; 599 pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via); 600 pcm_addchan(dev, PCMDIR_REC, &viachan_class, via); 601 pcm_setstatus(dev, status); 602 return 0; 603bad: 604 if (via->codec) ac97_destroy(via->codec); 605 if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 606 if (via->ih) bus_teardown_intr(dev, via->irq, via->ih); 607 if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 608 if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat); 609 if (via->sgd_dmamap) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 610 if (via->sgd_table) bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 611 if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat); 612 if (via->lock) snd_mtxfree(via->lock); 613 if (via) free(via, M_DEVBUF); 614 return ENXIO; 615} 616 617static int 618via_detach(device_t dev) 619{ 620 int r; 621 struct via_info *via = 0; 622 623 r = pcm_unregister(dev); 624 if (r) 625 return r; 626 627 via = pcm_getdevinfo(dev); 628 bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 629 bus_teardown_intr(dev, via->irq, via->ih); 630 bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 631 bus_dma_tag_destroy(via->parent_dmat); 632 bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 633 bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 634 bus_dma_tag_destroy(via->sgd_dmat); 635 snd_mtxfree(via->lock); 636 free(via, M_DEVBUF); 637 return 0; 638} 639 640 641static device_method_t via_methods[] = { 642 DEVMETHOD(device_probe, via_probe), 643 DEVMETHOD(device_attach, via_attach), 644 DEVMETHOD(device_detach, via_detach), 645 { 0, 0} 646}; 647 648static driver_t via_driver = { 649 "pcm", 650 via_methods, 651 PCM_SOFTC_SIZE, 652}; 653 654DRIVER_MODULE(snd_via82c686, pci, via_driver, pcm_devclass, 0, 0); 655MODULE_DEPEND(snd_via82c686, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); 656MODULE_VERSION(snd_via82c686, 1); 657