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 * $FreeBSD: src/sys/dev/sound/pci/via82c686.c,v 1.34.2.2 2007/04/26 08:21:44 ariff Exp $ 27 */ 28 29 #include <dev/sound/pcm/sound.h> 30 #include <dev/sound/pcm/ac97.h> 31 32 #include <bus/pci/pcireg.h> 33 #include <bus/pci/pcivar.h> 34 #include <sys/sysctl.h> 35 36 #include <dev/sound/pci/via82c686.h> 37 38 SND_DECLARE_FILE("$DragonFly: src/sys/dev/sound/pci/via82c686.c,v 1.10 2007/06/16 20:07:19 dillon Exp $"); 39 40 #define VIA_PCI_ID 0x30581106 41 #define NSEGS 4 /* Number of segments in SGD table */ 42 43 #define SEGS_PER_CHAN (NSEGS/2) 44 45 #define TIMEOUT 50 46 #define VIA_DEFAULT_BUFSZ 0x1000 47 48 #undef DEB 49 #define DEB(x) 50 51 /* we rely on this struct being packed to 64 bits */ 52 struct via_dma_op { 53 u_int32_t ptr; 54 u_int32_t flags; 55 #define VIA_DMAOP_EOL 0x80000000 56 #define VIA_DMAOP_FLAG 0x40000000 57 #define VIA_DMAOP_STOP 0x20000000 58 #define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF) 59 }; 60 61 struct via_info; 62 63 struct via_chinfo { 64 struct via_info *parent; 65 struct pcm_channel *channel; 66 struct snd_dbuf *buffer; 67 struct via_dma_op *sgd_table; 68 bus_addr_t sgd_addr; 69 int dir, blksz; 70 int base, count, mode, ctrl; 71 }; 72 73 struct via_info { 74 bus_space_tag_t st; 75 bus_space_handle_t sh; 76 bus_dma_tag_t parent_dmat; 77 bus_dma_tag_t sgd_dmat; 78 bus_dmamap_t sgd_dmamap; 79 bus_addr_t sgd_addr; 80 81 struct resource *reg, *irq; 82 int regid, irqid; 83 void *ih; 84 struct ac97_info *codec; 85 86 unsigned int bufsz; 87 88 struct via_chinfo pch, rch; 89 struct via_dma_op *sgd_table; 90 u_int16_t codec_caps; 91 sndlock_t lock; 92 }; 93 94 static u_int32_t via_fmt[] = { 95 AFMT_U8, 96 AFMT_STEREO | AFMT_U8, 97 AFMT_S16_LE, 98 AFMT_STEREO | AFMT_S16_LE, 99 0 100 }; 101 static struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0}; 102 static struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0}; 103 104 static __inline u_int32_t 105 via_rd(struct via_info *via, int regno, int size) 106 { 107 108 switch (size) { 109 case 1: 110 return bus_space_read_1(via->st, via->sh, regno); 111 case 2: 112 return bus_space_read_2(via->st, via->sh, regno); 113 case 4: 114 return bus_space_read_4(via->st, via->sh, regno); 115 default: 116 return 0xFFFFFFFF; 117 } 118 } 119 120 121 static __inline void 122 via_wr(struct via_info *via, int regno, u_int32_t data, int size) 123 { 124 125 switch (size) { 126 case 1: 127 bus_space_write_1(via->st, via->sh, regno, data); 128 break; 129 case 2: 130 bus_space_write_2(via->st, via->sh, regno, data); 131 break; 132 case 4: 133 bus_space_write_4(via->st, via->sh, regno, data); 134 break; 135 } 136 } 137 138 /* -------------------------------------------------------------------- */ 139 /* Codec interface */ 140 141 static int 142 via_waitready_codec(struct via_info *via) 143 { 144 int i; 145 146 /* poll until codec not busy */ 147 for (i = 0; (i < TIMEOUT) && 148 (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 149 DELAY(1); 150 if (i >= TIMEOUT) { 151 kprintf("via: codec busy\n"); 152 return 1; 153 } 154 155 return 0; 156 } 157 158 159 static int 160 via_waitvalid_codec(struct via_info *via) 161 { 162 int i; 163 164 /* poll until codec valid */ 165 for (i = 0; (i < TIMEOUT) && 166 !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 167 DELAY(1); 168 if (i >= TIMEOUT) { 169 kprintf("via: codec invalid\n"); 170 return 1; 171 } 172 173 return 0; 174 } 175 176 177 static int 178 via_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 179 { 180 struct via_info *via = addr; 181 182 if (via_waitready_codec(via)) return -1; 183 184 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 185 186 return 0; 187 } 188 189 190 static int 191 via_read_codec(kobj_t obj, void *addr, int reg) 192 { 193 struct via_info *via = addr; 194 195 if (via_waitready_codec(via)) 196 return -1; 197 198 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 199 200 if (via_waitready_codec(via)) 201 return -1; 202 203 if (via_waitvalid_codec(via)) 204 return -1; 205 206 return via_rd(via, VIA_CODEC_CTL, 2); 207 } 208 209 static kobj_method_t via_ac97_methods[] = { 210 KOBJMETHOD(ac97_read, via_read_codec), 211 KOBJMETHOD(ac97_write, via_write_codec), 212 { 0, 0 } 213 }; 214 AC97_DECLARE(via_ac97); 215 216 /* -------------------------------------------------------------------- */ 217 218 static int 219 via_buildsgdt(struct via_chinfo *ch) 220 { 221 u_int32_t phys_addr, flag; 222 int i, segs, seg_size; 223 224 /* 225 * Build the scatter/gather DMA (SGD) table. 226 * There are four slots in the table: two for play, two for record. 227 * This creates two half-buffers, one of which is playing; the other 228 * is feeding. 229 */ 230 seg_size = ch->blksz; 231 segs = sndbuf_getsize(ch->buffer) / seg_size; 232 phys_addr = sndbuf_getbufaddr(ch->buffer); 233 234 for (i = 0; i < segs; i++) { 235 flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 236 ch->sgd_table[i].ptr = phys_addr + (i * seg_size); 237 ch->sgd_table[i].flags = flag | seg_size; 238 } 239 240 return 0; 241 } 242 243 /* channel interface */ 244 static void * 245 viachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 246 { 247 struct via_info *via = devinfo; 248 struct via_chinfo *ch; 249 250 snd_mtxlock(via->lock); 251 if (dir == PCMDIR_PLAY) { 252 ch = &via->pch; 253 ch->base = VIA_PLAY_DMAOPS_BASE; 254 ch->count = VIA_PLAY_DMAOPS_COUNT; 255 ch->ctrl = VIA_PLAY_CONTROL; 256 ch->mode = VIA_PLAY_MODE; 257 ch->sgd_addr = via->sgd_addr; 258 ch->sgd_table = &via->sgd_table[0]; 259 } else { 260 ch = &via->rch; 261 ch->base = VIA_RECORD_DMAOPS_BASE; 262 ch->count = VIA_RECORD_DMAOPS_COUNT; 263 ch->ctrl = VIA_RECORD_CONTROL; 264 ch->mode = VIA_RECORD_MODE; 265 ch->sgd_addr = via->sgd_addr + sizeof(struct via_dma_op) * SEGS_PER_CHAN; 266 ch->sgd_table = &via->sgd_table[SEGS_PER_CHAN]; 267 } 268 269 ch->parent = via; 270 ch->channel = c; 271 ch->buffer = b; 272 ch->dir = dir; 273 snd_mtxunlock(via->lock); 274 275 if (sndbuf_alloc(ch->buffer, via->parent_dmat, via->bufsz) != 0) 276 return NULL; 277 278 return ch; 279 } 280 281 static int 282 viachan_setformat(kobj_t obj, void *data, u_int32_t format) 283 { 284 struct via_chinfo *ch = data; 285 struct via_info *via = ch->parent; 286 int mode, mode_set; 287 288 mode_set = 0; 289 if (format & AFMT_STEREO) 290 mode_set |= VIA_RPMODE_STEREO; 291 if (format & AFMT_S16_LE) 292 mode_set |= VIA_RPMODE_16BIT; 293 294 DEB(kprintf("set format: dir = %d, format=%x\n", ch->dir, format)); 295 snd_mtxlock(via->lock); 296 mode = via_rd(via, ch->mode, 1); 297 mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 298 mode |= mode_set; 299 via_wr(via, ch->mode, mode, 1); 300 snd_mtxunlock(via->lock); 301 302 return 0; 303 } 304 305 static int 306 viachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 307 { 308 struct via_chinfo *ch = data; 309 struct via_info *via = ch->parent; 310 int reg; 311 312 /* 313 * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 314 * upsampling is required. 315 * 316 * The VT82C686A does not perform upsampling, and neither do we. 317 * If the codec supports variable-rate audio (i.e. does the upsampling 318 * itself), then negotiate the rate with the codec. Otherwise, 319 * return 48 kHz cuz that's all you got. 320 */ 321 if (via->codec_caps & AC97_EXTCAP_VRA) { 322 reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE; 323 return ac97_setrate(via->codec, reg, speed); 324 } else 325 return 48000; 326 } 327 328 static int 329 viachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 330 { 331 struct via_chinfo *ch = data; 332 333 ch->blksz = blocksize; 334 sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz); 335 336 return ch->blksz; 337 } 338 339 static int 340 viachan_trigger(kobj_t obj, void *data, int go) 341 { 342 struct via_chinfo *ch = data; 343 struct via_info *via = ch->parent; 344 struct via_dma_op *ado; 345 bus_addr_t sgd_addr = ch->sgd_addr; 346 347 if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD) 348 return 0; 349 350 ado = ch->sgd_table; 351 DEB(kprintf("ado located at va=%p pa=%x\n", ado, sgd_addr)); 352 353 snd_mtxlock(via->lock); 354 if (go == PCMTRIG_START) { 355 via_buildsgdt(ch); 356 via_wr(via, ch->base, sgd_addr, 4); 357 via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1); 358 } else 359 via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1); 360 snd_mtxunlock(via->lock); 361 362 DEB(kprintf("viachan_trigger: go=%d\n", go)); 363 return 0; 364 } 365 366 static int 367 viachan_getptr(kobj_t obj, void *data) 368 { 369 struct via_chinfo *ch = data; 370 struct via_info *via = ch->parent; 371 struct via_dma_op *ado; 372 bus_addr_t sgd_addr = ch->sgd_addr; 373 int ptr, base, base1, len, seg; 374 375 ado = ch->sgd_table; 376 snd_mtxlock(via->lock); 377 base1 = via_rd(via, ch->base, 4); 378 len = via_rd(via, ch->count, 4); 379 base = via_rd(via, ch->base, 4); 380 if (base != base1) /* Avoid race hazard */ 381 len = via_rd(via, ch->count, 4); 382 snd_mtxunlock(via->lock); 383 384 DEB(kprintf("viachan_getptr: len / base = %x / %x\n", len, base)); 385 386 /* Base points to SGD segment to do, one past current */ 387 388 /* Determine how many segments have been done */ 389 seg = (base - sgd_addr) / sizeof(struct via_dma_op); 390 if (seg == 0) 391 seg = SEGS_PER_CHAN; 392 393 /* Now work out offset: seg less count */ 394 ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len; 395 if (ch->dir == PCMDIR_REC) { 396 /* DMA appears to operate on memory 'lines' of 32 bytes */ 397 /* so don't return any part line - it isn't in RAM yet */ 398 ptr = ptr & ~0x1f; 399 } 400 401 DEB(kprintf("return ptr=%d\n", ptr)); 402 return ptr; 403 } 404 405 static struct pcmchan_caps * 406 viachan_getcaps(kobj_t obj, void *data) 407 { 408 struct via_chinfo *ch = data; 409 struct via_info *via = ch->parent; 410 411 return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps; 412 } 413 414 static kobj_method_t viachan_methods[] = { 415 KOBJMETHOD(channel_init, viachan_init), 416 KOBJMETHOD(channel_setformat, viachan_setformat), 417 KOBJMETHOD(channel_setspeed, viachan_setspeed), 418 KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 419 KOBJMETHOD(channel_trigger, viachan_trigger), 420 KOBJMETHOD(channel_getptr, viachan_getptr), 421 KOBJMETHOD(channel_getcaps, viachan_getcaps), 422 { 0, 0 } 423 }; 424 CHANNEL_DECLARE(viachan); 425 426 /* -------------------------------------------------------------------- */ 427 428 static void 429 via_intr(void *p) 430 { 431 struct via_info *via = p; 432 433 /* DEB(kprintf("viachan_intr\n")); */ 434 /* Read channel */ 435 snd_mtxlock(via->lock); 436 if (via_rd(via, VIA_PLAY_STAT, 1) & VIA_RPSTAT_INTR) { 437 via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 438 snd_mtxunlock(via->lock); 439 chn_intr(via->pch.channel); 440 snd_mtxlock(via->lock); 441 } 442 443 /* Write channel */ 444 if (via_rd(via, VIA_RECORD_STAT, 1) & VIA_RPSTAT_INTR) { 445 via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 446 snd_mtxunlock(via->lock); 447 chn_intr(via->rch.channel); 448 return; 449 } 450 snd_mtxunlock(via->lock); 451 } 452 453 /* 454 * Probe and attach the card 455 */ 456 static int 457 via_probe(device_t dev) 458 { 459 if (pci_get_devid(dev) == VIA_PCI_ID) { 460 device_set_desc(dev, "VIA VT82C686A"); 461 return BUS_PROBE_DEFAULT; 462 } 463 return ENXIO; 464 } 465 466 467 static void 468 dma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 469 { 470 struct via_info *via = (struct via_info *)p; 471 via->sgd_addr = bds->ds_addr; 472 } 473 474 475 static int 476 via_attach(device_t dev) 477 { 478 struct via_info *via = 0; 479 char status[SND_STATUSLEN]; 480 u_int32_t data, cnt; 481 482 via = kmalloc(sizeof *via, M_DEVBUF, M_WAITOK | M_ZERO); 483 via->lock = snd_mtxcreate(device_get_nameunit(dev), "sound softc"); 484 485 /* Get resources */ 486 data = pci_read_config(dev, PCIR_COMMAND, 2); 487 data |= (PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN); 488 pci_write_config(dev, PCIR_COMMAND, data, 2); 489 data = pci_read_config(dev, PCIR_COMMAND, 2); 490 491 /* Wake up and reset AC97 if necessary */ 492 data = pci_read_config(dev, VIA_AC97STATUS, 1); 493 494 if ((data & VIA_AC97STATUS_RDY) == 0) { 495 /* Cold reset per ac97r2.3 spec (page 95) */ 496 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 497 DELAY(100); /* Wait T_rst_low */ 498 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_NRST, 1); /* Assert high */ 499 DELAY(5); /* Wait T_rst2clk */ 500 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 501 } else { 502 /* Warm reset */ 503 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 504 DELAY(100); 505 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_SYNC, 1); /* Sync */ 506 DELAY(5); /* Wait T_sync_high */ 507 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 508 DELAY(5); /* Wait T_sync2clk */ 509 } 510 511 /* Power everything up */ 512 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_DESIRED, 1); 513 514 /* Wait for codec to become ready (largest reported delay here 310ms) */ 515 for (cnt = 0; cnt < 2000; cnt++) { 516 data = pci_read_config(dev, VIA_AC97STATUS, 1); 517 if (data & VIA_AC97STATUS_RDY) 518 break; 519 DELAY(5000); 520 } 521 522 via->regid = PCIR_BAR(0); 523 via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 524 &via->regid, RF_ACTIVE); 525 if (!via->reg) { 526 device_printf(dev, "cannot allocate bus resource."); 527 goto bad; 528 } 529 via->st = rman_get_bustag(via->reg); 530 via->sh = rman_get_bushandle(via->reg); 531 532 via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536); 533 534 via->irqid = 0; 535 via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid, 536 RF_ACTIVE | RF_SHAREABLE); 537 if (!via->irq || snd_setup_intr(dev, via->irq, INTR_MPSAFE, via_intr, via, &via->ih)) { 538 device_printf(dev, "unable to map interrupt\n"); 539 goto bad; 540 } 541 542 via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 543 via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 544 545 via->codec = AC97_CREATE(dev, via, via_ac97); 546 if (!via->codec) 547 goto bad; 548 549 if (mixer_init(dev, ac97_getmixerclass(), via->codec)) 550 goto bad; 551 552 via->codec_caps = ac97_getextcaps(via->codec); 553 ac97_setextmode(via->codec, 554 via->codec_caps & (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM)); 555 556 /* DMA tag for buffers */ 557 if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*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, 563 &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*/NULL, /*alignment*/2, /*boundary*/0, 574 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 575 /*highaddr*/BUS_SPACE_MAXADDR, 576 /*filter*/NULL, /*filterarg*/NULL, 577 /*maxsize*/NSEGS * sizeof(struct via_dma_op), 578 /*nsegments*/1, /*maxsegz*/0x3ffff, 579 /*flags*/0, 580 &via->sgd_dmat) != 0) { 581 device_printf(dev, "unable to create dma tag\n"); 582 goto bad; 583 } 584 585 if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table, 586 BUS_DMA_NOWAIT, &via->sgd_dmamap) != 0) 587 goto bad; 588 if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table, 589 NSEGS * sizeof(struct via_dma_op), dma_cb, via, 0) != 0) 590 goto bad; 591 592 ksnprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld %s", 593 rman_get_start(via->reg), rman_get_start(via->irq), 594 PCM_KLDSTRING(snd_via82c686)); 595 596 /* Register */ 597 if (pcm_register(dev, via, 1, 1)) goto bad; 598 pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via); 599 pcm_addchan(dev, PCMDIR_REC, &viachan_class, via); 600 pcm_setstatus(dev, status); 601 return 0; 602 bad: 603 if (via->codec) ac97_destroy(via->codec); 604 if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 605 if (via->ih) bus_teardown_intr(dev, via->irq, via->ih); 606 if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 607 if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat); 608 if (via->sgd_dmamap) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 609 if (via->sgd_table) bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 610 if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat); 611 if (via->lock) snd_mtxfree(via->lock); 612 if (via) kfree(via, M_DEVBUF); 613 return ENXIO; 614 } 615 616 static int 617 via_detach(device_t dev) 618 { 619 int r; 620 struct via_info *via = 0; 621 622 r = pcm_unregister(dev); 623 if (r) 624 return r; 625 626 via = pcm_getdevinfo(dev); 627 bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 628 bus_teardown_intr(dev, via->irq, via->ih); 629 bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 630 bus_dma_tag_destroy(via->parent_dmat); 631 bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 632 bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 633 bus_dma_tag_destroy(via->sgd_dmat); 634 snd_mtxfree(via->lock); 635 kfree(via, M_DEVBUF); 636 return 0; 637 } 638 639 640 static device_method_t via_methods[] = { 641 DEVMETHOD(device_probe, via_probe), 642 DEVMETHOD(device_attach, via_attach), 643 DEVMETHOD(device_detach, via_detach), 644 { 0, 0} 645 }; 646 647 static driver_t via_driver = { 648 "pcm", 649 via_methods, 650 PCM_SOFTC_SIZE, 651 }; 652 653 DRIVER_MODULE(snd_via82c686, pci, via_driver, pcm_devclass, NULL, NULL); 654 MODULE_DEPEND(snd_via82c686, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); 655 MODULE_VERSION(snd_via82c686, 1); 656