1 /*- 2 * Copyright (c) 2000 David Jones <dej@ox.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <dev/sound/pcm/sound.h> 28 #include <dev/sound/pcm/ac97.h> 29 30 #include <dev/pci/pcireg.h> 31 #include <dev/pci/pcivar.h> 32 #include <sys/sysctl.h> 33 34 #include <dev/sound/pci/via82c686.h> 35 36 SND_DECLARE_FILE("$FreeBSD$"); 37 38 #define VIA_PCI_ID 0x30581106 39 #define NSEGS 4 /* Number of segments in SGD table */ 40 41 #define SEGS_PER_CHAN (NSEGS/2) 42 43 #define TIMEOUT 50 44 #define VIA_DEFAULT_BUFSZ 0x1000 45 46 #undef DEB 47 #define DEB(x) 48 49 /* we rely on this struct being packed to 64 bits */ 50 struct via_dma_op { 51 u_int32_t ptr; 52 u_int32_t flags; 53 #define VIA_DMAOP_EOL 0x80000000 54 #define VIA_DMAOP_FLAG 0x40000000 55 #define VIA_DMAOP_STOP 0x20000000 56 #define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF) 57 }; 58 59 struct via_info; 60 61 struct via_chinfo { 62 struct via_info *parent; 63 struct pcm_channel *channel; 64 struct snd_dbuf *buffer; 65 struct via_dma_op *sgd_table; 66 bus_addr_t sgd_addr; 67 int dir, blksz; 68 int base, count, mode, ctrl; 69 }; 70 71 struct via_info { 72 bus_space_tag_t st; 73 bus_space_handle_t sh; 74 bus_dma_tag_t parent_dmat; 75 bus_dma_tag_t sgd_dmat; 76 bus_dmamap_t sgd_dmamap; 77 bus_addr_t sgd_addr; 78 79 struct resource *reg, *irq; 80 int regid, irqid; 81 void *ih; 82 struct ac97_info *codec; 83 84 unsigned int bufsz; 85 86 struct via_chinfo pch, rch; 87 struct via_dma_op *sgd_table; 88 u_int16_t codec_caps; 89 struct mtx *lock; 90 }; 91 92 static u_int32_t via_fmt[] = { 93 AFMT_U8, 94 AFMT_STEREO | AFMT_U8, 95 AFMT_S16_LE, 96 AFMT_STEREO | AFMT_S16_LE, 97 0 98 }; 99 static struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0}; 100 static struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0}; 101 102 static __inline u_int32_t 103 via_rd(struct via_info *via, int regno, int size) 104 { 105 106 switch (size) { 107 case 1: 108 return bus_space_read_1(via->st, via->sh, regno); 109 case 2: 110 return bus_space_read_2(via->st, via->sh, regno); 111 case 4: 112 return bus_space_read_4(via->st, via->sh, regno); 113 default: 114 return 0xFFFFFFFF; 115 } 116 } 117 118 119 static __inline void 120 via_wr(struct via_info *via, int regno, u_int32_t data, int size) 121 { 122 123 switch (size) { 124 case 1: 125 bus_space_write_1(via->st, via->sh, regno, data); 126 break; 127 case 2: 128 bus_space_write_2(via->st, via->sh, regno, data); 129 break; 130 case 4: 131 bus_space_write_4(via->st, via->sh, regno, data); 132 break; 133 } 134 } 135 136 /* -------------------------------------------------------------------- */ 137 /* Codec interface */ 138 139 static int 140 via_waitready_codec(struct via_info *via) 141 { 142 int i; 143 144 /* poll until codec not busy */ 145 for (i = 0; (i < TIMEOUT) && 146 (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 147 DELAY(1); 148 if (i >= TIMEOUT) { 149 printf("via: codec busy\n"); 150 return 1; 151 } 152 153 return 0; 154 } 155 156 157 static int 158 via_waitvalid_codec(struct via_info *via) 159 { 160 int i; 161 162 /* poll until codec valid */ 163 for (i = 0; (i < TIMEOUT) && 164 !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 165 DELAY(1); 166 if (i >= TIMEOUT) { 167 printf("via: codec invalid\n"); 168 return 1; 169 } 170 171 return 0; 172 } 173 174 175 static int 176 via_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 177 { 178 struct via_info *via = addr; 179 180 if (via_waitready_codec(via)) return -1; 181 182 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 183 184 return 0; 185 } 186 187 188 static int 189 via_read_codec(kobj_t obj, void *addr, int reg) 190 { 191 struct via_info *via = addr; 192 193 if (via_waitready_codec(via)) 194 return -1; 195 196 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 197 198 if (via_waitready_codec(via)) 199 return -1; 200 201 if (via_waitvalid_codec(via)) 202 return -1; 203 204 return via_rd(via, VIA_CODEC_CTL, 2); 205 } 206 207 static kobj_method_t via_ac97_methods[] = { 208 KOBJMETHOD(ac97_read, via_read_codec), 209 KOBJMETHOD(ac97_write, via_write_codec), 210 { 0, 0 } 211 }; 212 AC97_DECLARE(via_ac97); 213 214 /* -------------------------------------------------------------------- */ 215 216 static int 217 via_buildsgdt(struct via_chinfo *ch) 218 { 219 u_int32_t phys_addr, flag; 220 int i, segs, seg_size; 221 222 /* 223 * Build the scatter/gather DMA (SGD) table. 224 * There are four slots in the table: two for play, two for record. 225 * This creates two half-buffers, one of which is playing; the other 226 * is feeding. 227 */ 228 seg_size = ch->blksz; 229 segs = sndbuf_getsize(ch->buffer) / seg_size; 230 phys_addr = sndbuf_getbufaddr(ch->buffer); 231 232 for (i = 0; i < segs; i++) { 233 flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 234 ch->sgd_table[i].ptr = phys_addr + (i * seg_size); 235 ch->sgd_table[i].flags = flag | seg_size; 236 } 237 238 return 0; 239 } 240 241 /* channel interface */ 242 static void * 243 viachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 244 { 245 struct via_info *via = devinfo; 246 struct via_chinfo *ch; 247 248 snd_mtxlock(via->lock); 249 if (dir == PCMDIR_PLAY) { 250 ch = &via->pch; 251 ch->base = VIA_PLAY_DMAOPS_BASE; 252 ch->count = VIA_PLAY_DMAOPS_COUNT; 253 ch->ctrl = VIA_PLAY_CONTROL; 254 ch->mode = VIA_PLAY_MODE; 255 ch->sgd_addr = via->sgd_addr; 256 ch->sgd_table = &via->sgd_table[0]; 257 } else { 258 ch = &via->rch; 259 ch->base = VIA_RECORD_DMAOPS_BASE; 260 ch->count = VIA_RECORD_DMAOPS_COUNT; 261 ch->ctrl = VIA_RECORD_CONTROL; 262 ch->mode = VIA_RECORD_MODE; 263 ch->sgd_addr = via->sgd_addr + sizeof(struct via_dma_op) * SEGS_PER_CHAN; 264 ch->sgd_table = &via->sgd_table[SEGS_PER_CHAN]; 265 } 266 267 ch->parent = via; 268 ch->channel = c; 269 ch->buffer = b; 270 ch->dir = dir; 271 snd_mtxunlock(via->lock); 272 273 if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0) 274 return NULL; 275 276 return ch; 277 } 278 279 static int 280 viachan_setformat(kobj_t obj, void *data, u_int32_t format) 281 { 282 struct via_chinfo *ch = data; 283 struct via_info *via = ch->parent; 284 int mode, mode_set; 285 286 mode_set = 0; 287 if (format & AFMT_STEREO) 288 mode_set |= VIA_RPMODE_STEREO; 289 if (format & AFMT_S16_LE) 290 mode_set |= VIA_RPMODE_16BIT; 291 292 DEB(printf("set format: dir = %d, format=%x\n", ch->dir, format)); 293 snd_mtxlock(via->lock); 294 mode = via_rd(via, ch->mode, 1); 295 mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 296 mode |= mode_set; 297 via_wr(via, ch->mode, mode, 1); 298 snd_mtxunlock(via->lock); 299 300 return 0; 301 } 302 303 static int 304 viachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 305 { 306 struct via_chinfo *ch = data; 307 struct via_info *via = ch->parent; 308 int reg; 309 310 /* 311 * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 312 * upsampling is required. 313 * 314 * The VT82C686A does not perform upsampling, and neither do we. 315 * If the codec supports variable-rate audio (i.e. does the upsampling 316 * itself), then negotiate the rate with the codec. Otherwise, 317 * return 48 kHz cuz that's all you got. 318 */ 319 if (via->codec_caps & AC97_EXTCAP_VRA) { 320 reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE; 321 return ac97_setrate(via->codec, reg, speed); 322 } else 323 return 48000; 324 } 325 326 static int 327 viachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 328 { 329 struct via_chinfo *ch = data; 330 331 ch->blksz = blocksize; 332 sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz); 333 334 return ch->blksz; 335 } 336 337 static int 338 viachan_trigger(kobj_t obj, void *data, int go) 339 { 340 struct via_chinfo *ch = data; 341 struct via_info *via = ch->parent; 342 struct via_dma_op *ado; 343 bus_addr_t sgd_addr = ch->sgd_addr; 344 345 if (!PCMTRIG_COMMON(go)) 346 return 0; 347 348 ado = ch->sgd_table; 349 DEB(printf("ado located at va=%p pa=%x\n", ado, sgd_addr)); 350 351 snd_mtxlock(via->lock); 352 if (go == PCMTRIG_START) { 353 via_buildsgdt(ch); 354 via_wr(via, ch->base, sgd_addr, 4); 355 via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1); 356 } else 357 via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1); 358 snd_mtxunlock(via->lock); 359 360 DEB(printf("viachan_trigger: go=%d\n", go)); 361 return 0; 362 } 363 364 static int 365 viachan_getptr(kobj_t obj, void *data) 366 { 367 struct via_chinfo *ch = data; 368 struct via_info *via = ch->parent; 369 struct via_dma_op *ado; 370 bus_addr_t sgd_addr = ch->sgd_addr; 371 int ptr, base, base1, len, seg; 372 373 ado = ch->sgd_table; 374 snd_mtxlock(via->lock); 375 base1 = via_rd(via, ch->base, 4); 376 len = via_rd(via, ch->count, 4); 377 base = via_rd(via, ch->base, 4); 378 if (base != base1) /* Avoid race hazard */ 379 len = via_rd(via, ch->count, 4); 380 snd_mtxunlock(via->lock); 381 382 DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base)); 383 384 /* Base points to SGD segment to do, one past current */ 385 386 /* Determine how many segments have been done */ 387 seg = (base - sgd_addr) / sizeof(struct via_dma_op); 388 if (seg == 0) 389 seg = SEGS_PER_CHAN; 390 391 /* Now work out offset: seg less count */ 392 ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len; 393 if (ch->dir == PCMDIR_REC) { 394 /* DMA appears to operate on memory 'lines' of 32 bytes */ 395 /* so don't return any part line - it isn't in RAM yet */ 396 ptr = ptr & ~0x1f; 397 } 398 399 DEB(printf("return ptr=%d\n", ptr)); 400 return ptr; 401 } 402 403 static struct pcmchan_caps * 404 viachan_getcaps(kobj_t obj, void *data) 405 { 406 struct via_chinfo *ch = data; 407 struct via_info *via = ch->parent; 408 409 return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps; 410 } 411 412 static kobj_method_t viachan_methods[] = { 413 KOBJMETHOD(channel_init, viachan_init), 414 KOBJMETHOD(channel_setformat, viachan_setformat), 415 KOBJMETHOD(channel_setspeed, viachan_setspeed), 416 KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 417 KOBJMETHOD(channel_trigger, viachan_trigger), 418 KOBJMETHOD(channel_getptr, viachan_getptr), 419 KOBJMETHOD(channel_getcaps, viachan_getcaps), 420 { 0, 0 } 421 }; 422 CHANNEL_DECLARE(viachan); 423 424 /* -------------------------------------------------------------------- */ 425 426 static void 427 via_intr(void *p) 428 { 429 struct via_info *via = p; 430 431 /* DEB(printf("viachan_intr\n")); */ 432 /* Read channel */ 433 snd_mtxlock(via->lock); 434 if (via_rd(via, VIA_PLAY_STAT, 1) & VIA_RPSTAT_INTR) { 435 via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 436 snd_mtxunlock(via->lock); 437 chn_intr(via->pch.channel); 438 snd_mtxlock(via->lock); 439 } 440 441 /* Write channel */ 442 if (via_rd(via, VIA_RECORD_STAT, 1) & VIA_RPSTAT_INTR) { 443 via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 444 snd_mtxunlock(via->lock); 445 chn_intr(via->rch.channel); 446 return; 447 } 448 snd_mtxunlock(via->lock); 449 } 450 451 /* 452 * Probe and attach the card 453 */ 454 static int 455 via_probe(device_t dev) 456 { 457 if (pci_get_devid(dev) == VIA_PCI_ID) { 458 device_set_desc(dev, "VIA VT82C686A"); 459 return BUS_PROBE_DEFAULT; 460 } 461 return ENXIO; 462 } 463 464 465 static void 466 dma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 467 { 468 struct via_info *via = (struct via_info *)p; 469 via->sgd_addr = bds->ds_addr; 470 } 471 472 473 static int 474 via_attach(device_t dev) 475 { 476 struct via_info *via = 0; 477 char status[SND_STATUSLEN]; 478 u_int32_t data, cnt; 479 480 via = malloc(sizeof(*via), M_DEVBUF, M_WAITOK | M_ZERO); 481 via->lock = snd_mtxcreate(device_get_nameunit(dev), 482 "snd_via82c686 softc"); 483 484 /* Get resources */ 485 data = pci_read_config(dev, PCIR_COMMAND, 2); 486 data |= (PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN); 487 pci_write_config(dev, PCIR_COMMAND, data, 2); 488 data = pci_read_config(dev, PCIR_COMMAND, 2); 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; 603 bad: 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 } 616 617 static int 618 via_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 } 639 640 641 static 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 }; 647 648 static driver_t via_driver = { 649 "pcm", 650 via_methods, 651 PCM_SOFTC_SIZE, 652 }; 653 654 DRIVER_MODULE(snd_via82c686, pci, via_driver, pcm_devclass, 0, 0); 655 MODULE_DEPEND(snd_via82c686, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); 656 MODULE_VERSION(snd_via82c686, 1); 657