Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pci/via82c686.c
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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 }; 90 91 static u_int32_t via_fmt[] = { 92 AFMT_U8, 93 AFMT_STEREO | AFMT_U8, 94 AFMT_S16_LE, 95 AFMT_STEREO | AFMT_S16_LE, 96 0 97 }; 98 static struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0}; 99 static struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0}; 100 101 static u_int32_t 102 via_rd(struct via_info *via, int regno, int size) 103 { 104 105 switch (size) { 106 case 1: 107 return bus_space_read_1(via->st, via->sh, regno); 108 case 2: 109 return bus_space_read_2(via->st, via->sh, regno); 110 case 4: 111 return bus_space_read_4(via->st, via->sh, regno); 112 default: 113 return 0xFFFFFFFF; 114 } 115 } 116 117 118 static void 119 via_wr(struct via_info *via, int regno, u_int32_t data, int size) 120 { 121 122 switch (size) { 123 case 1: 124 bus_space_write_1(via->st, via->sh, regno, data); 125 break; 126 case 2: 127 bus_space_write_2(via->st, via->sh, regno, data); 128 break; 129 case 4: 130 bus_space_write_4(via->st, via->sh, regno, data); 131 break; 132 } 133 } 134 135 /* -------------------------------------------------------------------- */ 136 /* Codec interface */ 137 138 static int 139 via_waitready_codec(struct via_info *via) 140 { 141 int i; 142 143 /* poll until codec not busy */ 144 for (i = 0; (i < TIMEOUT) && 145 (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 146 DELAY(1); 147 if (i >= TIMEOUT) { 148 printf("via: codec busy\n"); 149 return 1; 150 } 151 152 return 0; 153 } 154 155 156 static int 157 via_waitvalid_codec(struct via_info *via) 158 { 159 int i; 160 161 /* poll until codec valid */ 162 for (i = 0; (i < TIMEOUT) && 163 !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 164 DELAY(1); 165 if (i >= TIMEOUT) { 166 printf("via: codec invalid\n"); 167 return 1; 168 } 169 170 return 0; 171 } 172 173 174 static int 175 via_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 176 { 177 struct via_info *via = addr; 178 179 if (via_waitready_codec(via)) return -1; 180 181 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 182 183 return 0; 184 } 185 186 187 static int 188 via_read_codec(kobj_t obj, void *addr, int reg) 189 { 190 struct via_info *via = addr; 191 192 if (via_waitready_codec(via)) 193 return -1; 194 195 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 196 197 if (via_waitready_codec(via)) 198 return -1; 199 200 if (via_waitvalid_codec(via)) 201 return -1; 202 203 return via_rd(via, VIA_CODEC_CTL, 2); 204 } 205 206 static kobj_method_t via_ac97_methods[] = { 207 KOBJMETHOD(ac97_read, via_read_codec), 208 KOBJMETHOD(ac97_write, via_write_codec), 209 { 0, 0 } 210 }; 211 AC97_DECLARE(via_ac97); 212 213 /* -------------------------------------------------------------------- */ 214 215 static int 216 via_buildsgdt(struct via_chinfo *ch) 217 { 218 u_int32_t phys_addr, flag; 219 int i, segs, seg_size; 220 221 /* 222 * Build the scatter/gather DMA (SGD) table. 223 * There are four slots in the table: two for play, two for record. 224 * This creates two half-buffers, one of which is playing; the other 225 * is feeding. 226 */ 227 seg_size = ch->blksz; 228 segs = sndbuf_getsize(ch->buffer) / seg_size; 229 phys_addr = sndbuf_getbufaddr(ch->buffer); 230 231 for (i = 0; i < segs; i++) { 232 flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 233 ch->sgd_table[i].ptr = phys_addr + (i * seg_size); 234 ch->sgd_table[i].flags = flag | seg_size; 235 } 236 237 return 0; 238 } 239 240 /* channel interface */ 241 static void * 242 viachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 243 { 244 struct via_info *via = devinfo; 245 struct via_chinfo *ch; 246 247 if (dir == PCMDIR_PLAY) { 248 ch = &via->pch; 249 ch->base = VIA_PLAY_DMAOPS_BASE; 250 ch->count = VIA_PLAY_DMAOPS_COUNT; 251 ch->ctrl = VIA_PLAY_CONTROL; 252 ch->mode = VIA_PLAY_MODE; 253 ch->sgd_addr = via->sgd_addr; 254 ch->sgd_table = &via->sgd_table[0]; 255 } else { 256 ch = &via->rch; 257 ch->base = VIA_RECORD_DMAOPS_BASE; 258 ch->count = VIA_RECORD_DMAOPS_COUNT; 259 ch->ctrl = VIA_RECORD_CONTROL; 260 ch->mode = VIA_RECORD_MODE; 261 ch->sgd_addr = via->sgd_addr + sizeof(struct via_dma_op) * SEGS_PER_CHAN; 262 ch->sgd_table = &via->sgd_table[SEGS_PER_CHAN]; 263 } 264 265 ch->parent = via; 266 ch->channel = c; 267 ch->buffer = b; 268 ch->dir = dir; 269 270 if (sndbuf_alloc(ch->buffer, via->parent_dmat, via->bufsz) != 0) 271 return NULL; 272 return ch; 273 } 274 275 static int 276 viachan_setformat(kobj_t obj, void *data, u_int32_t format) 277 { 278 struct via_chinfo *ch = data; 279 struct via_info *via = ch->parent; 280 int mode, mode_set; 281 282 mode_set = 0; 283 if (format & AFMT_STEREO) 284 mode_set |= VIA_RPMODE_STEREO; 285 if (format & AFMT_S16_LE) 286 mode_set |= VIA_RPMODE_16BIT; 287 288 DEB(printf("set format: dir = %d, format=%x\n", ch->dir, format)); 289 mode = via_rd(via, ch->mode, 1); 290 mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 291 mode |= mode_set; 292 via_wr(via, ch->mode, mode, 1); 293 294 return 0; 295 } 296 297 static int 298 viachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 299 { 300 struct via_chinfo *ch = data; 301 struct via_info *via = ch->parent; 302 int reg; 303 304 /* 305 * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 306 * upsampling is required. 307 * 308 * The VT82C686A does not perform upsampling, and neither do we. 309 * If the codec supports variable-rate audio (i.e. does the upsampling 310 * itself), then negotiate the rate with the codec. Otherwise, 311 * return 48 kHz cuz that's all you got. 312 */ 313 if (via->codec_caps & AC97_EXTCAP_VRA) { 314 reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE; 315 return ac97_setrate(via->codec, reg, speed); 316 } else 317 return 48000; 318 } 319 320 static int 321 viachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 322 { 323 struct via_chinfo *ch = data; 324 325 ch->blksz = blocksize; 326 sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz); 327 328 return ch->blksz; 329 } 330 331 static int 332 viachan_trigger(kobj_t obj, void *data, int go) 333 { 334 struct via_chinfo *ch = data; 335 struct via_info *via = ch->parent; 336 struct via_dma_op *ado; 337 bus_addr_t sgd_addr = ch->sgd_addr; 338 339 if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD) 340 return 0; 341 342 ado = ch->sgd_table; 343 DEB(printf("ado located at va=%p pa=%x\n", ado, sgd_addr)); 344 345 if (go == PCMTRIG_START) { 346 via_buildsgdt(ch); 347 via_wr(via, ch->base, sgd_addr, 4); 348 via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1); 349 } else 350 via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1); 351 352 DEB(printf("viachan_trigger: go=%d\n", go)); 353 return 0; 354 } 355 356 static int 357 viachan_getptr(kobj_t obj, void *data) 358 { 359 struct via_chinfo *ch = data; 360 struct via_info *via = ch->parent; 361 struct via_dma_op *ado; 362 bus_addr_t sgd_addr = ch->sgd_addr; 363 int ptr, base, base1, len, seg; 364 365 ado = ch->sgd_table; 366 base1 = via_rd(via, ch->base, 4); 367 len = via_rd(via, ch->count, 4); 368 base = via_rd(via, ch->base, 4); 369 if (base != base1) /* Avoid race hazard */ 370 len = via_rd(via, ch->count, 4); 371 372 DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base)); 373 374 /* Base points to SGD segment to do, one past current */ 375 376 /* Determine how many segments have been done */ 377 seg = (base - sgd_addr) / sizeof(struct via_dma_op); 378 if (seg == 0) 379 seg = SEGS_PER_CHAN; 380 381 /* Now work out offset: seg less count */ 382 ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len; 383 if (ch->dir == PCMDIR_REC) { 384 /* DMA appears to operate on memory 'lines' of 32 bytes */ 385 /* so don't return any part line - it isn't in RAM yet */ 386 ptr = ptr & ~0x1f; 387 } 388 389 DEB(printf("return ptr=%d\n", ptr)); 390 return ptr; 391 } 392 393 static struct pcmchan_caps * 394 viachan_getcaps(kobj_t obj, void *data) 395 { 396 struct via_chinfo *ch = data; 397 struct via_info *via = ch->parent; 398 399 return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps; 400 } 401 402 static kobj_method_t viachan_methods[] = { 403 KOBJMETHOD(channel_init, viachan_init), 404 KOBJMETHOD(channel_setformat, viachan_setformat), 405 KOBJMETHOD(channel_setspeed, viachan_setspeed), 406 KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 407 KOBJMETHOD(channel_trigger, viachan_trigger), 408 KOBJMETHOD(channel_getptr, viachan_getptr), 409 KOBJMETHOD(channel_getcaps, viachan_getcaps), 410 { 0, 0 } 411 }; 412 CHANNEL_DECLARE(viachan); 413 414 /* -------------------------------------------------------------------- */ 415 416 static void 417 via_intr(void *p) 418 { 419 struct via_info *via = p; 420 int st; 421 422 /* DEB(printf("viachan_intr\n")); */ 423 /* Read channel */ 424 st = via_rd(via, VIA_PLAY_STAT, 1); 425 if (st & VIA_RPSTAT_INTR) { 426 via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 427 chn_intr(via->pch.channel); 428 } 429 430 /* Write channel */ 431 st = via_rd(via, VIA_RECORD_STAT, 1); 432 if (st & VIA_RPSTAT_INTR) { 433 via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 434 chn_intr(via->rch.channel); 435 } 436 } 437 438 /* 439 * Probe and attach the card 440 */ 441 static int 442 via_probe(device_t dev) 443 { 444 if (pci_get_devid(dev) == VIA_PCI_ID) { 445 device_set_desc(dev, "VIA VT82C686A"); 446 return 0; 447 } 448 return ENXIO; 449 } 450 451 452 static void 453 dma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 454 { 455 struct via_info *via = (struct via_info *)p; 456 via->sgd_addr = bds->ds_addr; 457 } 458 459 460 static int 461 via_attach(device_t dev) 462 { 463 struct via_info *via = 0; 464 char status[SND_STATUSLEN]; 465 u_int32_t data, cnt; 466 467 if ((via = malloc(sizeof *via, M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 468 device_printf(dev, "cannot allocate softc\n"); 469 return ENXIO; 470 } 471 472 /* Get resources */ 473 data = pci_read_config(dev, PCIR_COMMAND, 2); 474 data |= (PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN); 475 pci_write_config(dev, PCIR_COMMAND, data, 2); 476 data = pci_read_config(dev, PCIR_COMMAND, 2); 477 478 /* Wake up and reset AC97 if necessary */ 479 data = pci_read_config(dev, VIA_AC97STATUS, 1); 480 481 if ((data & VIA_AC97STATUS_RDY) == 0) { 482 /* Cold reset per ac97r2.3 spec (page 95) */ 483 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 484 DELAY(100); /* Wait T_rst_low */ 485 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_NRST, 1); /* Assert high */ 486 DELAY(5); /* Wait T_rst2clk */ 487 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 488 } else { 489 /* Warm reset */ 490 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 491 DELAY(100); 492 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_SYNC, 1); /* Sync */ 493 DELAY(5); /* Wait T_sync_high */ 494 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 495 DELAY(5); /* Wait T_sync2clk */ 496 } 497 498 /* Power everything up */ 499 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_DESIRED, 1); 500 501 /* Wait for codec to become ready (largest reported delay here 310ms) */ 502 for (cnt = 0; cnt < 2000; cnt++) { 503 data = pci_read_config(dev, VIA_AC97STATUS, 1); 504 if (data & VIA_AC97STATUS_RDY) 505 break; 506 DELAY(5000); 507 } 508 509 via->regid = PCIR_BAR(0); 510 via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 511 &via->regid, RF_ACTIVE); 512 if (!via->reg) { 513 device_printf(dev, "cannot allocate bus resource."); 514 goto bad; 515 } 516 via->st = rman_get_bustag(via->reg); 517 via->sh = rman_get_bushandle(via->reg); 518 519 via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536); 520 521 via->irqid = 0; 522 via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid, 523 RF_ACTIVE | RF_SHAREABLE); 524 if (!via->irq || snd_setup_intr(dev, via->irq, 0, via_intr, via, &via->ih)) { 525 device_printf(dev, "unable to map interrupt\n"); 526 goto bad; 527 } 528 529 via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 530 via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 531 532 via->codec = AC97_CREATE(dev, via, via_ac97); 533 if (!via->codec) 534 goto bad; 535 536 if (mixer_init(dev, ac97_getmixerclass(), via->codec)) 537 goto bad; 538 539 via->codec_caps = ac97_getextcaps(via->codec); 540 ac97_setextmode(via->codec, 541 via->codec_caps & (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM)); 542 543 /* DMA tag for buffers */ 544 if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 545 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 546 /*highaddr*/BUS_SPACE_MAXADDR, 547 /*filter*/NULL, /*filterarg*/NULL, 548 /*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff, 549 /*flags*/0, /*lockfunc*/busdma_lock_mutex, 550 /*lockarg*/&Giant, &via->parent_dmat) != 0) { 551 device_printf(dev, "unable to create dma tag\n"); 552 goto bad; 553 } 554 555 /* 556 * DMA tag for SGD table. The 686 uses scatter/gather DMA and 557 * requires a list in memory of work to do. We need only 16 bytes 558 * for this list, and it is wasteful to allocate 16K. 559 */ 560 if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 561 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 562 /*highaddr*/BUS_SPACE_MAXADDR, 563 /*filter*/NULL, /*filterarg*/NULL, 564 /*maxsize*/NSEGS * sizeof(struct via_dma_op), 565 /*nsegments*/1, /*maxsegz*/0x3ffff, 566 /*flags*/0, /*lockfunc*/busdma_lock_mutex, 567 /*lockarg*/&Giant, &via->sgd_dmat) != 0) { 568 device_printf(dev, "unable to create dma tag\n"); 569 goto bad; 570 } 571 572 if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table, 573 BUS_DMA_NOWAIT, &via->sgd_dmamap) != 0) 574 goto bad; 575 if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table, 576 NSEGS * sizeof(struct via_dma_op), dma_cb, via, 0) != 0) 577 goto bad; 578 579 snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld %s", 580 rman_get_start(via->reg), rman_get_start(via->irq), 581 PCM_KLDSTRING(snd_via82c686)); 582 583 /* Register */ 584 if (pcm_register(dev, via, 1, 1)) goto bad; 585 pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via); 586 pcm_addchan(dev, PCMDIR_REC, &viachan_class, via); 587 pcm_setstatus(dev, status); 588 return 0; 589 bad: 590 if (via->codec) ac97_destroy(via->codec); 591 if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 592 if (via->ih) bus_teardown_intr(dev, via->irq, via->ih); 593 if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 594 if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat); 595 if (via->sgd_dmamap) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 596 if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat); 597 if (via) free(via, M_DEVBUF); 598 return ENXIO; 599 } 600 601 static int 602 via_detach(device_t dev) 603 { 604 int r; 605 struct via_info *via = 0; 606 607 r = pcm_unregister(dev); 608 if (r) 609 return r; 610 611 via = pcm_getdevinfo(dev); 612 bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 613 bus_teardown_intr(dev, via->irq, via->ih); 614 bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 615 bus_dma_tag_destroy(via->parent_dmat); 616 bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 617 bus_dma_tag_destroy(via->sgd_dmat); 618 free(via, M_DEVBUF); 619 return 0; 620 } 621 622 623 static device_method_t via_methods[] = { 624 DEVMETHOD(device_probe, via_probe), 625 DEVMETHOD(device_attach, via_attach), 626 DEVMETHOD(device_detach, via_detach), 627 { 0, 0} 628 }; 629 630 static driver_t via_driver = { 631 "pcm", 632 via_methods, 633 PCM_SOFTC_SIZE, 634 }; 635 636 DRIVER_MODULE(snd_via82c686, pci, via_driver, pcm_devclass, 0, 0); 637 MODULE_DEPEND(snd_via82c686, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); 638 MODULE_VERSION(snd_via82c686, 1);
Cache object: 580c2cb91ef90a0ce6c9b3211af77a83
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