1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2000 David Jones <dej@ox.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. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifdef HAVE_KERNEL_OPTION_HEADERS 30 #include "opt_snd.h" 31 #endif 32 33 #include <dev/sound/pcm/sound.h> 34 #include <dev/sound/pcm/ac97.h> 35 36 #include <dev/pci/pcireg.h> 37 #include <dev/pci/pcivar.h> 38 #include <sys/sysctl.h> 39 40 #include <dev/sound/pci/via82c686.h> 41 42 SND_DECLARE_FILE("$FreeBSD$"); 43 44 #define VIA_PCI_ID 0x30581106 45 #define NSEGS 4 /* Number of segments in SGD table */ 46 47 #define SEGS_PER_CHAN (NSEGS/2) 48 49 #define TIMEOUT 50 50 #define VIA_DEFAULT_BUFSZ 0x1000 51 52 #undef DEB 53 #define DEB(x) 54 55 /* we rely on this struct being packed to 64 bits */ 56 struct via_dma_op { 57 u_int32_t ptr; 58 u_int32_t flags; 59 #define VIA_DMAOP_EOL 0x80000000 60 #define VIA_DMAOP_FLAG 0x40000000 61 #define VIA_DMAOP_STOP 0x20000000 62 #define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF) 63 }; 64 65 struct via_info; 66 67 struct via_chinfo { 68 struct via_info *parent; 69 struct pcm_channel *channel; 70 struct snd_dbuf *buffer; 71 struct via_dma_op *sgd_table; 72 bus_addr_t sgd_addr; 73 int dir, blksz; 74 int base, count, mode, ctrl; 75 }; 76 77 struct via_info { 78 bus_space_tag_t st; 79 bus_space_handle_t sh; 80 bus_dma_tag_t parent_dmat; 81 bus_dma_tag_t sgd_dmat; 82 bus_dmamap_t sgd_dmamap; 83 bus_addr_t sgd_addr; 84 85 struct resource *reg, *irq; 86 int regid, irqid; 87 void *ih; 88 struct ac97_info *codec; 89 90 unsigned int bufsz; 91 92 struct via_chinfo pch, rch; 93 struct via_dma_op *sgd_table; 94 u_int16_t codec_caps; 95 struct mtx *lock; 96 }; 97 98 static u_int32_t via_fmt[] = { 99 SND_FORMAT(AFMT_U8, 1, 0), 100 SND_FORMAT(AFMT_U8, 2, 0), 101 SND_FORMAT(AFMT_S16_LE, 1, 0), 102 SND_FORMAT(AFMT_S16_LE, 2, 0), 103 0 104 }; 105 static struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0}; 106 static struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0}; 107 108 static __inline u_int32_t 109 via_rd(struct via_info *via, int regno, int size) 110 { 111 112 switch (size) { 113 case 1: 114 return bus_space_read_1(via->st, via->sh, regno); 115 case 2: 116 return bus_space_read_2(via->st, via->sh, regno); 117 case 4: 118 return bus_space_read_4(via->st, via->sh, regno); 119 default: 120 return 0xFFFFFFFF; 121 } 122 } 123 124 125 static __inline void 126 via_wr(struct via_info *via, int regno, u_int32_t data, int size) 127 { 128 129 switch (size) { 130 case 1: 131 bus_space_write_1(via->st, via->sh, regno, data); 132 break; 133 case 2: 134 bus_space_write_2(via->st, via->sh, regno, data); 135 break; 136 case 4: 137 bus_space_write_4(via->st, via->sh, regno, data); 138 break; 139 } 140 } 141 142 /* -------------------------------------------------------------------- */ 143 /* Codec interface */ 144 145 static int 146 via_waitready_codec(struct via_info *via) 147 { 148 int i; 149 150 /* poll until codec not busy */ 151 for (i = 0; (i < TIMEOUT) && 152 (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 153 DELAY(1); 154 if (i >= TIMEOUT) { 155 printf("via: codec busy\n"); 156 return 1; 157 } 158 159 return 0; 160 } 161 162 163 static int 164 via_waitvalid_codec(struct via_info *via) 165 { 166 int i; 167 168 /* poll until codec valid */ 169 for (i = 0; (i < TIMEOUT) && 170 !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 171 DELAY(1); 172 if (i >= TIMEOUT) { 173 printf("via: codec invalid\n"); 174 return 1; 175 } 176 177 return 0; 178 } 179 180 181 static int 182 via_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 183 { 184 struct via_info *via = addr; 185 186 if (via_waitready_codec(via)) return -1; 187 188 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 189 190 return 0; 191 } 192 193 194 static int 195 via_read_codec(kobj_t obj, void *addr, int reg) 196 { 197 struct via_info *via = addr; 198 199 if (via_waitready_codec(via)) 200 return -1; 201 202 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 203 204 if (via_waitready_codec(via)) 205 return -1; 206 207 if (via_waitvalid_codec(via)) 208 return -1; 209 210 return via_rd(via, VIA_CODEC_CTL, 2); 211 } 212 213 static kobj_method_t via_ac97_methods[] = { 214 KOBJMETHOD(ac97_read, via_read_codec), 215 KOBJMETHOD(ac97_write, via_write_codec), 216 KOBJMETHOD_END 217 }; 218 AC97_DECLARE(via_ac97); 219 220 /* -------------------------------------------------------------------- */ 221 222 static int 223 via_buildsgdt(struct via_chinfo *ch) 224 { 225 u_int32_t phys_addr, flag; 226 int i, segs, seg_size; 227 228 /* 229 * Build the scatter/gather DMA (SGD) table. 230 * There are four slots in the table: two for play, two for record. 231 * This creates two half-buffers, one of which is playing; the other 232 * is feeding. 233 */ 234 seg_size = ch->blksz; 235 segs = sndbuf_getsize(ch->buffer) / seg_size; 236 phys_addr = sndbuf_getbufaddr(ch->buffer); 237 238 for (i = 0; i < segs; i++) { 239 flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 240 ch->sgd_table[i].ptr = phys_addr + (i * seg_size); 241 ch->sgd_table[i].flags = flag | seg_size; 242 } 243 244 return 0; 245 } 246 247 /* channel interface */ 248 static void * 249 viachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 250 { 251 struct via_info *via = devinfo; 252 struct via_chinfo *ch; 253 254 snd_mtxlock(via->lock); 255 if (dir == PCMDIR_PLAY) { 256 ch = &via->pch; 257 ch->base = VIA_PLAY_DMAOPS_BASE; 258 ch->count = VIA_PLAY_DMAOPS_COUNT; 259 ch->ctrl = VIA_PLAY_CONTROL; 260 ch->mode = VIA_PLAY_MODE; 261 ch->sgd_addr = via->sgd_addr; 262 ch->sgd_table = &via->sgd_table[0]; 263 } else { 264 ch = &via->rch; 265 ch->base = VIA_RECORD_DMAOPS_BASE; 266 ch->count = VIA_RECORD_DMAOPS_COUNT; 267 ch->ctrl = VIA_RECORD_CONTROL; 268 ch->mode = VIA_RECORD_MODE; 269 ch->sgd_addr = via->sgd_addr + sizeof(struct via_dma_op) * SEGS_PER_CHAN; 270 ch->sgd_table = &via->sgd_table[SEGS_PER_CHAN]; 271 } 272 273 ch->parent = via; 274 ch->channel = c; 275 ch->buffer = b; 276 ch->dir = dir; 277 snd_mtxunlock(via->lock); 278 279 if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0) 280 return NULL; 281 282 return ch; 283 } 284 285 static int 286 viachan_setformat(kobj_t obj, void *data, u_int32_t format) 287 { 288 struct via_chinfo *ch = data; 289 struct via_info *via = ch->parent; 290 int mode, mode_set; 291 292 mode_set = 0; 293 if (AFMT_CHANNEL(format) > 1) 294 mode_set |= VIA_RPMODE_STEREO; 295 if (format & AFMT_S16_LE) 296 mode_set |= VIA_RPMODE_16BIT; 297 298 DEB(printf("set format: dir = %d, format=%x\n", ch->dir, format)); 299 snd_mtxlock(via->lock); 300 mode = via_rd(via, ch->mode, 1); 301 mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 302 mode |= mode_set; 303 via_wr(via, ch->mode, mode, 1); 304 snd_mtxunlock(via->lock); 305 306 return 0; 307 } 308 309 static u_int32_t 310 viachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 311 { 312 struct via_chinfo *ch = data; 313 struct via_info *via = ch->parent; 314 int reg; 315 316 /* 317 * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 318 * upsampling is required. 319 * 320 * The VT82C686A does not perform upsampling, and neither do we. 321 * If the codec supports variable-rate audio (i.e. does the upsampling 322 * itself), then negotiate the rate with the codec. Otherwise, 323 * return 48 kHz cuz that's all you got. 324 */ 325 if (via->codec_caps & AC97_EXTCAP_VRA) { 326 reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE; 327 return ac97_setrate(via->codec, reg, speed); 328 } else 329 return 48000; 330 } 331 332 static u_int32_t 333 viachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 334 { 335 struct via_chinfo *ch = data; 336 337 ch->blksz = blocksize; 338 sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz); 339 340 return ch->blksz; 341 } 342 343 static int 344 viachan_trigger(kobj_t obj, void *data, int go) 345 { 346 struct via_chinfo *ch = data; 347 struct via_info *via = ch->parent; 348 struct via_dma_op *ado; 349 bus_addr_t sgd_addr = ch->sgd_addr; 350 351 if (!PCMTRIG_COMMON(go)) 352 return 0; 353 354 ado = ch->sgd_table; 355 DEB(printf("ado located at va=%p pa=%x\n", ado, sgd_addr)); 356 357 snd_mtxlock(via->lock); 358 if (go == PCMTRIG_START) { 359 via_buildsgdt(ch); 360 via_wr(via, ch->base, sgd_addr, 4); 361 via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1); 362 } else 363 via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1); 364 snd_mtxunlock(via->lock); 365 366 DEB(printf("viachan_trigger: go=%d\n", go)); 367 return 0; 368 } 369 370 static u_int32_t 371 viachan_getptr(kobj_t obj, void *data) 372 { 373 struct via_chinfo *ch = data; 374 struct via_info *via = ch->parent; 375 struct via_dma_op *ado; 376 bus_addr_t sgd_addr = ch->sgd_addr; 377 u_int32_t ptr, base, base1, len, seg; 378 379 ado = ch->sgd_table; 380 snd_mtxlock(via->lock); 381 base1 = via_rd(via, ch->base, 4); 382 len = via_rd(via, ch->count, 4); 383 base = via_rd(via, ch->base, 4); 384 if (base != base1) /* Avoid race hazard */ 385 len = via_rd(via, ch->count, 4); 386 snd_mtxunlock(via->lock); 387 388 DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base)); 389 390 /* Base points to SGD segment to do, one past current */ 391 392 /* Determine how many segments have been done */ 393 seg = (base - sgd_addr) / sizeof(struct via_dma_op); 394 if (seg == 0) 395 seg = SEGS_PER_CHAN; 396 397 /* Now work out offset: seg less count */ 398 ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len; 399 if (ch->dir == PCMDIR_REC) { 400 /* DMA appears to operate on memory 'lines' of 32 bytes */ 401 /* so don't return any part line - it isn't in RAM yet */ 402 ptr = ptr & ~0x1f; 403 } 404 405 DEB(printf("return ptr=%u\n", ptr)); 406 return ptr; 407 } 408 409 static struct pcmchan_caps * 410 viachan_getcaps(kobj_t obj, void *data) 411 { 412 struct via_chinfo *ch = data; 413 struct via_info *via = ch->parent; 414 415 return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps; 416 } 417 418 static kobj_method_t viachan_methods[] = { 419 KOBJMETHOD(channel_init, viachan_init), 420 KOBJMETHOD(channel_setformat, viachan_setformat), 421 KOBJMETHOD(channel_setspeed, viachan_setspeed), 422 KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 423 KOBJMETHOD(channel_trigger, viachan_trigger), 424 KOBJMETHOD(channel_getptr, viachan_getptr), 425 KOBJMETHOD(channel_getcaps, viachan_getcaps), 426 KOBJMETHOD_END 427 }; 428 CHANNEL_DECLARE(viachan); 429 430 /* -------------------------------------------------------------------- */ 431 432 static void 433 via_intr(void *p) 434 { 435 struct via_info *via = p; 436 437 /* DEB(printf("viachan_intr\n")); */ 438 /* Read channel */ 439 snd_mtxlock(via->lock); 440 if (via_rd(via, VIA_PLAY_STAT, 1) & VIA_RPSTAT_INTR) { 441 via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 442 snd_mtxunlock(via->lock); 443 chn_intr(via->pch.channel); 444 snd_mtxlock(via->lock); 445 } 446 447 /* Write channel */ 448 if (via_rd(via, VIA_RECORD_STAT, 1) & VIA_RPSTAT_INTR) { 449 via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 450 snd_mtxunlock(via->lock); 451 chn_intr(via->rch.channel); 452 return; 453 } 454 snd_mtxunlock(via->lock); 455 } 456 457 /* 458 * Probe and attach the card 459 */ 460 static int 461 via_probe(device_t dev) 462 { 463 if (pci_get_devid(dev) == VIA_PCI_ID) { 464 device_set_desc(dev, "VIA VT82C686A"); 465 return BUS_PROBE_DEFAULT; 466 } 467 return ENXIO; 468 } 469 470 471 static void 472 dma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 473 { 474 struct via_info *via = (struct via_info *)p; 475 via->sgd_addr = bds->ds_addr; 476 } 477 478 479 static int 480 via_attach(device_t dev) 481 { 482 struct via_info *via = NULL; 483 char status[SND_STATUSLEN]; 484 u_int32_t data, cnt; 485 486 via = malloc(sizeof(*via), M_DEVBUF, M_WAITOK | M_ZERO); 487 via->lock = snd_mtxcreate(device_get_nameunit(dev), 488 "snd_via82c686 softc"); 489 490 pci_enable_busmaster(dev); 491 492 /* Wake up and reset AC97 if necessary */ 493 data = pci_read_config(dev, VIA_AC97STATUS, 1); 494 495 if ((data & VIA_AC97STATUS_RDY) == 0) { 496 /* Cold reset per ac97r2.3 spec (page 95) */ 497 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 498 DELAY(100); /* Wait T_rst_low */ 499 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_NRST, 1); /* Assert high */ 500 DELAY(5); /* Wait T_rst2clk */ 501 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 502 } else { 503 /* Warm reset */ 504 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 505 DELAY(100); 506 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_SYNC, 1); /* Sync */ 507 DELAY(5); /* Wait T_sync_high */ 508 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 509 DELAY(5); /* Wait T_sync2clk */ 510 } 511 512 /* Power everything up */ 513 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_DESIRED, 1); 514 515 /* Wait for codec to become ready (largest reported delay here 310ms) */ 516 for (cnt = 0; cnt < 2000; cnt++) { 517 data = pci_read_config(dev, VIA_AC97STATUS, 1); 518 if (data & VIA_AC97STATUS_RDY) 519 break; 520 DELAY(5000); 521 } 522 523 via->regid = PCIR_BAR(0); 524 via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 525 &via->regid, RF_ACTIVE); 526 if (!via->reg) { 527 device_printf(dev, "cannot allocate bus resource."); 528 goto bad; 529 } 530 via->st = rman_get_bustag(via->reg); 531 via->sh = rman_get_bushandle(via->reg); 532 533 via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536); 534 535 via->irqid = 0; 536 via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid, 537 RF_ACTIVE | RF_SHAREABLE); 538 if (!via->irq || snd_setup_intr(dev, via->irq, INTR_MPSAFE, via_intr, via, &via->ih)) { 539 device_printf(dev, "unable to map interrupt\n"); 540 goto bad; 541 } 542 543 via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 544 via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 545 546 via->codec = AC97_CREATE(dev, via, via_ac97); 547 if (!via->codec) 548 goto bad; 549 550 if (mixer_init(dev, ac97_getmixerclass(), via->codec)) 551 goto bad; 552 553 via->codec_caps = ac97_getextcaps(via->codec); 554 ac97_setextmode(via->codec, 555 via->codec_caps & (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM)); 556 557 /* DMA tag for buffers */ 558 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2, 559 /*boundary*/0, 560 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 561 /*highaddr*/BUS_SPACE_MAXADDR, 562 /*filter*/NULL, /*filterarg*/NULL, 563 /*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff, 564 /*flags*/0, /*lockfunc*/NULL, 565 /*lockarg*/NULL, &via->parent_dmat) != 0) { 566 device_printf(dev, "unable to create dma tag\n"); 567 goto bad; 568 } 569 570 /* 571 * DMA tag for SGD table. The 686 uses scatter/gather DMA and 572 * requires a list in memory of work to do. We need only 16 bytes 573 * for this list, and it is wasteful to allocate 16K. 574 */ 575 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2, 576 /*boundary*/0, 577 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 578 /*highaddr*/BUS_SPACE_MAXADDR, 579 /*filter*/NULL, /*filterarg*/NULL, 580 /*maxsize*/NSEGS * sizeof(struct via_dma_op), 581 /*nsegments*/1, /*maxsegz*/0x3ffff, 582 /*flags*/0, /*lockfunc*/NULL, 583 /*lockarg*/NULL, &via->sgd_dmat) != 0) { 584 device_printf(dev, "unable to create dma tag\n"); 585 goto bad; 586 } 587 588 if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table, 589 BUS_DMA_NOWAIT, &via->sgd_dmamap) != 0) 590 goto bad; 591 if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table, 592 NSEGS * sizeof(struct via_dma_op), dma_cb, via, 0) != 0) 593 goto bad; 594 595 snprintf(status, SND_STATUSLEN, "at io 0x%jx irq %jd %s", 596 rman_get_start(via->reg), rman_get_start(via->irq), 597 PCM_KLDSTRING(snd_via82c686)); 598 599 /* Register */ 600 if (pcm_register(dev, via, 1, 1)) goto bad; 601 pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via); 602 pcm_addchan(dev, PCMDIR_REC, &viachan_class, via); 603 pcm_setstatus(dev, status); 604 return 0; 605 bad: 606 if (via->codec) ac97_destroy(via->codec); 607 if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 608 if (via->ih) bus_teardown_intr(dev, via->irq, via->ih); 609 if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 610 if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat); 611 if (via->sgd_addr) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 612 if (via->sgd_table) bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 613 if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat); 614 if (via->lock) snd_mtxfree(via->lock); 615 if (via) free(via, M_DEVBUF); 616 return ENXIO; 617 } 618 619 static int 620 via_detach(device_t dev) 621 { 622 int r; 623 struct via_info *via = NULL; 624 625 r = pcm_unregister(dev); 626 if (r) 627 return r; 628 629 via = pcm_getdevinfo(dev); 630 bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 631 bus_teardown_intr(dev, via->irq, via->ih); 632 bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 633 bus_dma_tag_destroy(via->parent_dmat); 634 bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 635 bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 636 bus_dma_tag_destroy(via->sgd_dmat); 637 snd_mtxfree(via->lock); 638 free(via, M_DEVBUF); 639 return 0; 640 } 641 642 643 static device_method_t via_methods[] = { 644 DEVMETHOD(device_probe, via_probe), 645 DEVMETHOD(device_attach, via_attach), 646 DEVMETHOD(device_detach, via_detach), 647 { 0, 0} 648 }; 649 650 static driver_t via_driver = { 651 "pcm", 652 via_methods, 653 PCM_SOFTC_SIZE, 654 }; 655 656 DRIVER_MODULE(snd_via82c686, pci, via_driver, pcm_devclass, 0, 0); 657 MODULE_DEPEND(snd_via82c686, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); 658 MODULE_VERSION(snd_via82c686, 1); 659