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 * $DragonFly: src/sys/dev/sound/pci/via82c686.c,v 1.10 2007/06/16 20:07:19 dillon Exp $ 28 */ 29 30 #include <dev/sound/pcm/sound.h> 31 #include <dev/sound/pcm/ac97.h> 32 33 #include <bus/pci/pcireg.h> 34 #include <bus/pci/pcivar.h> 35 #include <sys/sysctl.h> 36 37 #include <dev/sound/pci/via82c686.h> 38 39 SND_DECLARE_FILE("$DragonFly: src/sys/dev/sound/pci/via82c686.c,v 1.10 2007/06/16 20:07:19 dillon Exp $"); 40 41 #define VIA_PCI_ID 0x30581106 42 #define NSEGS 4 /* Number of segments in SGD table */ 43 44 #define SEGS_PER_CHAN (NSEGS/2) 45 46 #define TIMEOUT 50 47 #define VIA_DEFAULT_BUFSZ 0x1000 48 49 #undef DEB 50 #define DEB(x) 51 52 /* we rely on this struct being packed to 64 bits */ 53 struct via_dma_op { 54 u_int32_t ptr; 55 u_int32_t flags; 56 #define VIA_DMAOP_EOL 0x80000000 57 #define VIA_DMAOP_FLAG 0x40000000 58 #define VIA_DMAOP_STOP 0x20000000 59 #define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF) 60 }; 61 62 struct via_info; 63 64 struct via_chinfo { 65 struct via_info *parent; 66 struct pcm_channel *channel; 67 struct snd_dbuf *buffer; 68 struct via_dma_op *sgd_table; 69 bus_addr_t sgd_addr; 70 int dir, blksz; 71 int base, count, mode, ctrl; 72 }; 73 74 struct via_info { 75 bus_space_tag_t st; 76 bus_space_handle_t sh; 77 bus_dma_tag_t parent_dmat; 78 bus_dma_tag_t sgd_dmat; 79 bus_dmamap_t sgd_dmamap; 80 bus_addr_t sgd_addr; 81 82 struct resource *reg, *irq; 83 int regid, irqid; 84 void *ih; 85 struct ac97_info *codec; 86 87 unsigned int bufsz; 88 89 struct via_chinfo pch, rch; 90 struct via_dma_op *sgd_table; 91 u_int16_t codec_caps; 92 sndlock_t lock; 93 }; 94 95 static u_int32_t via_fmt[] = { 96 AFMT_U8, 97 AFMT_STEREO | AFMT_U8, 98 AFMT_S16_LE, 99 AFMT_STEREO | AFMT_S16_LE, 100 0 101 }; 102 static struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0}; 103 static struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0}; 104 105 static __inline u_int32_t 106 via_rd(struct via_info *via, int regno, int size) 107 { 108 109 switch (size) { 110 case 1: 111 return bus_space_read_1(via->st, via->sh, regno); 112 case 2: 113 return bus_space_read_2(via->st, via->sh, regno); 114 case 4: 115 return bus_space_read_4(via->st, via->sh, regno); 116 default: 117 return 0xFFFFFFFF; 118 } 119 } 120 121 122 static __inline void 123 via_wr(struct via_info *via, int regno, u_int32_t data, int size) 124 { 125 126 switch (size) { 127 case 1: 128 bus_space_write_1(via->st, via->sh, regno, data); 129 break; 130 case 2: 131 bus_space_write_2(via->st, via->sh, regno, data); 132 break; 133 case 4: 134 bus_space_write_4(via->st, via->sh, regno, data); 135 break; 136 } 137 } 138 139 /* -------------------------------------------------------------------- */ 140 /* Codec interface */ 141 142 static int 143 via_waitready_codec(struct via_info *via) 144 { 145 int i; 146 147 /* poll until codec not busy */ 148 for (i = 0; (i < TIMEOUT) && 149 (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 150 DELAY(1); 151 if (i >= TIMEOUT) { 152 kprintf("via: codec busy\n"); 153 return 1; 154 } 155 156 return 0; 157 } 158 159 160 static int 161 via_waitvalid_codec(struct via_info *via) 162 { 163 int i; 164 165 /* poll until codec valid */ 166 for (i = 0; (i < TIMEOUT) && 167 !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 168 DELAY(1); 169 if (i >= TIMEOUT) { 170 kprintf("via: codec invalid\n"); 171 return 1; 172 } 173 174 return 0; 175 } 176 177 178 static int 179 via_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 180 { 181 struct via_info *via = addr; 182 183 if (via_waitready_codec(via)) return -1; 184 185 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 186 187 return 0; 188 } 189 190 191 static int 192 via_read_codec(kobj_t obj, void *addr, int reg) 193 { 194 struct via_info *via = addr; 195 196 if (via_waitready_codec(via)) 197 return -1; 198 199 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 200 201 if (via_waitready_codec(via)) 202 return -1; 203 204 if (via_waitvalid_codec(via)) 205 return -1; 206 207 return via_rd(via, VIA_CODEC_CTL, 2); 208 } 209 210 static kobj_method_t via_ac97_methods[] = { 211 KOBJMETHOD(ac97_read, via_read_codec), 212 KOBJMETHOD(ac97_write, via_write_codec), 213 { 0, 0 } 214 }; 215 AC97_DECLARE(via_ac97); 216 217 /* -------------------------------------------------------------------- */ 218 219 static int 220 via_buildsgdt(struct via_chinfo *ch) 221 { 222 u_int32_t phys_addr, flag; 223 int i, segs, seg_size; 224 225 /* 226 * Build the scatter/gather DMA (SGD) table. 227 * There are four slots in the table: two for play, two for record. 228 * This creates two half-buffers, one of which is playing; the other 229 * is feeding. 230 */ 231 seg_size = ch->blksz; 232 segs = sndbuf_getsize(ch->buffer) / seg_size; 233 phys_addr = sndbuf_getbufaddr(ch->buffer); 234 235 for (i = 0; i < segs; i++) { 236 flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 237 ch->sgd_table[i].ptr = phys_addr + (i * seg_size); 238 ch->sgd_table[i].flags = flag | seg_size; 239 } 240 241 return 0; 242 } 243 244 /* channel interface */ 245 static void * 246 viachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 247 { 248 struct via_info *via = devinfo; 249 struct via_chinfo *ch; 250 251 snd_mtxlock(via->lock); 252 if (dir == PCMDIR_PLAY) { 253 ch = &via->pch; 254 ch->base = VIA_PLAY_DMAOPS_BASE; 255 ch->count = VIA_PLAY_DMAOPS_COUNT; 256 ch->ctrl = VIA_PLAY_CONTROL; 257 ch->mode = VIA_PLAY_MODE; 258 ch->sgd_addr = via->sgd_addr; 259 ch->sgd_table = &via->sgd_table[0]; 260 } else { 261 ch = &via->rch; 262 ch->base = VIA_RECORD_DMAOPS_BASE; 263 ch->count = VIA_RECORD_DMAOPS_COUNT; 264 ch->ctrl = VIA_RECORD_CONTROL; 265 ch->mode = VIA_RECORD_MODE; 266 ch->sgd_addr = via->sgd_addr + sizeof(struct via_dma_op) * SEGS_PER_CHAN; 267 ch->sgd_table = &via->sgd_table[SEGS_PER_CHAN]; 268 } 269 270 ch->parent = via; 271 ch->channel = c; 272 ch->buffer = b; 273 ch->dir = dir; 274 snd_mtxunlock(via->lock); 275 276 if (sndbuf_alloc(ch->buffer, via->parent_dmat, via->bufsz) != 0) 277 return NULL; 278 279 return ch; 280 } 281 282 static int 283 viachan_setformat(kobj_t obj, void *data, u_int32_t format) 284 { 285 struct via_chinfo *ch = data; 286 struct via_info *via = ch->parent; 287 int mode, mode_set; 288 289 mode_set = 0; 290 if (format & AFMT_STEREO) 291 mode_set |= VIA_RPMODE_STEREO; 292 if (format & AFMT_S16_LE) 293 mode_set |= VIA_RPMODE_16BIT; 294 295 DEB(kprintf("set format: dir = %d, format=%x\n", ch->dir, format)); 296 snd_mtxlock(via->lock); 297 mode = via_rd(via, ch->mode, 1); 298 mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 299 mode |= mode_set; 300 via_wr(via, ch->mode, mode, 1); 301 snd_mtxunlock(via->lock); 302 303 return 0; 304 } 305 306 static int 307 viachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 308 { 309 struct via_chinfo *ch = data; 310 struct via_info *via = ch->parent; 311 int reg; 312 313 /* 314 * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 315 * upsampling is required. 316 * 317 * The VT82C686A does not perform upsampling, and neither do we. 318 * If the codec supports variable-rate audio (i.e. does the upsampling 319 * itself), then negotiate the rate with the codec. Otherwise, 320 * return 48 kHz cuz that's all you got. 321 */ 322 if (via->codec_caps & AC97_EXTCAP_VRA) { 323 reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE; 324 return ac97_setrate(via->codec, reg, speed); 325 } else 326 return 48000; 327 } 328 329 static int 330 viachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 331 { 332 struct via_chinfo *ch = data; 333 334 ch->blksz = blocksize; 335 sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz); 336 337 return ch->blksz; 338 } 339 340 static int 341 viachan_trigger(kobj_t obj, void *data, int go) 342 { 343 struct via_chinfo *ch = data; 344 struct via_info *via = ch->parent; 345 struct via_dma_op *ado; 346 bus_addr_t sgd_addr = ch->sgd_addr; 347 348 if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD) 349 return 0; 350 351 ado = ch->sgd_table; 352 DEB(kprintf("ado located at va=%p pa=%x\n", ado, sgd_addr)); 353 354 snd_mtxlock(via->lock); 355 if (go == PCMTRIG_START) { 356 via_buildsgdt(ch); 357 via_wr(via, ch->base, sgd_addr, 4); 358 via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1); 359 } else 360 via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1); 361 snd_mtxunlock(via->lock); 362 363 DEB(kprintf("viachan_trigger: go=%d\n", go)); 364 return 0; 365 } 366 367 static int 368 viachan_getptr(kobj_t obj, void *data) 369 { 370 struct via_chinfo *ch = data; 371 struct via_info *via = ch->parent; 372 struct via_dma_op *ado; 373 bus_addr_t sgd_addr = ch->sgd_addr; 374 int ptr, base, base1, len, seg; 375 376 ado = ch->sgd_table; 377 snd_mtxlock(via->lock); 378 base1 = via_rd(via, ch->base, 4); 379 len = via_rd(via, ch->count, 4); 380 base = via_rd(via, ch->base, 4); 381 if (base != base1) /* Avoid race hazard */ 382 len = via_rd(via, ch->count, 4); 383 snd_mtxunlock(via->lock); 384 385 DEB(kprintf("viachan_getptr: len / base = %x / %x\n", len, base)); 386 387 /* Base points to SGD segment to do, one past current */ 388 389 /* Determine how many segments have been done */ 390 seg = (base - sgd_addr) / sizeof(struct via_dma_op); 391 if (seg == 0) 392 seg = SEGS_PER_CHAN; 393 394 /* Now work out offset: seg less count */ 395 ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len; 396 if (ch->dir == PCMDIR_REC) { 397 /* DMA appears to operate on memory 'lines' of 32 bytes */ 398 /* so don't return any part line - it isn't in RAM yet */ 399 ptr = ptr & ~0x1f; 400 } 401 402 DEB(kprintf("return ptr=%d\n", ptr)); 403 return ptr; 404 } 405 406 static struct pcmchan_caps * 407 viachan_getcaps(kobj_t obj, void *data) 408 { 409 struct via_chinfo *ch = data; 410 struct via_info *via = ch->parent; 411 412 return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps; 413 } 414 415 static kobj_method_t viachan_methods[] = { 416 KOBJMETHOD(channel_init, viachan_init), 417 KOBJMETHOD(channel_setformat, viachan_setformat), 418 KOBJMETHOD(channel_setspeed, viachan_setspeed), 419 KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 420 KOBJMETHOD(channel_trigger, viachan_trigger), 421 KOBJMETHOD(channel_getptr, viachan_getptr), 422 KOBJMETHOD(channel_getcaps, viachan_getcaps), 423 { 0, 0 } 424 }; 425 CHANNEL_DECLARE(viachan); 426 427 /* -------------------------------------------------------------------- */ 428 429 static void 430 via_intr(void *p) 431 { 432 struct via_info *via = p; 433 434 /* DEB(kprintf("viachan_intr\n")); */ 435 /* Read channel */ 436 snd_mtxlock(via->lock); 437 if (via_rd(via, VIA_PLAY_STAT, 1) & VIA_RPSTAT_INTR) { 438 via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 439 snd_mtxunlock(via->lock); 440 chn_intr(via->pch.channel); 441 snd_mtxlock(via->lock); 442 } 443 444 /* Write channel */ 445 if (via_rd(via, VIA_RECORD_STAT, 1) & VIA_RPSTAT_INTR) { 446 via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 447 snd_mtxunlock(via->lock); 448 chn_intr(via->rch.channel); 449 return; 450 } 451 snd_mtxunlock(via->lock); 452 } 453 454 /* 455 * Probe and attach the card 456 */ 457 static int 458 via_probe(device_t dev) 459 { 460 if (pci_get_devid(dev) == VIA_PCI_ID) { 461 device_set_desc(dev, "VIA VT82C686A"); 462 return BUS_PROBE_DEFAULT; 463 } 464 return ENXIO; 465 } 466 467 468 static void 469 dma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 470 { 471 struct via_info *via = (struct via_info *)p; 472 via->sgd_addr = bds->ds_addr; 473 } 474 475 476 static int 477 via_attach(device_t dev) 478 { 479 struct via_info *via = 0; 480 char status[SND_STATUSLEN]; 481 u_int32_t data, cnt; 482 483 if ((via = kmalloc(sizeof *via, M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 484 device_printf(dev, "cannot allocate softc\n"); 485 return ENXIO; 486 } 487 via->lock = snd_mtxcreate(device_get_nameunit(dev), "sound softc"); 488 489 /* Get resources */ 490 data = pci_read_config(dev, PCIR_COMMAND, 2); 491 data |= (PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN); 492 pci_write_config(dev, PCIR_COMMAND, data, 2); 493 data = pci_read_config(dev, PCIR_COMMAND, 2); 494 495 /* Wake up and reset AC97 if necessary */ 496 data = pci_read_config(dev, VIA_AC97STATUS, 1); 497 498 if ((data & VIA_AC97STATUS_RDY) == 0) { 499 /* Cold reset per ac97r2.3 spec (page 95) */ 500 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 501 DELAY(100); /* Wait T_rst_low */ 502 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_NRST, 1); /* Assert high */ 503 DELAY(5); /* Wait T_rst2clk */ 504 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */ 505 } else { 506 /* Warm reset */ 507 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 508 DELAY(100); 509 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_SYNC, 1); /* Sync */ 510 DELAY(5); /* Wait T_sync_high */ 511 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */ 512 DELAY(5); /* Wait T_sync2clk */ 513 } 514 515 /* Power everything up */ 516 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_DESIRED, 1); 517 518 /* Wait for codec to become ready (largest reported delay here 310ms) */ 519 for (cnt = 0; cnt < 2000; cnt++) { 520 data = pci_read_config(dev, VIA_AC97STATUS, 1); 521 if (data & VIA_AC97STATUS_RDY) 522 break; 523 DELAY(5000); 524 } 525 526 via->regid = PCIR_BAR(0); 527 via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 528 &via->regid, RF_ACTIVE); 529 if (!via->reg) { 530 device_printf(dev, "cannot allocate bus resource."); 531 goto bad; 532 } 533 via->st = rman_get_bustag(via->reg); 534 via->sh = rman_get_bushandle(via->reg); 535 536 via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536); 537 538 via->irqid = 0; 539 via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid, 540 RF_ACTIVE | RF_SHAREABLE); 541 if (!via->irq || snd_setup_intr(dev, via->irq, INTR_MPSAFE, via_intr, via, &via->ih)) { 542 device_printf(dev, "unable to map interrupt\n"); 543 goto bad; 544 } 545 546 via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 547 via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 548 549 via->codec = AC97_CREATE(dev, via, via_ac97); 550 if (!via->codec) 551 goto bad; 552 553 if (mixer_init(dev, ac97_getmixerclass(), via->codec)) 554 goto bad; 555 556 via->codec_caps = ac97_getextcaps(via->codec); 557 ac97_setextmode(via->codec, 558 via->codec_caps & (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM)); 559 560 /* DMA tag for buffers */ 561 if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 562 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 563 /*highaddr*/BUS_SPACE_MAXADDR, 564 /*filter*/NULL, /*filterarg*/NULL, 565 /*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff, 566 /*flags*/0, 567 &via->parent_dmat) != 0) { 568 device_printf(dev, "unable to create dma tag\n"); 569 goto bad; 570 } 571 572 /* 573 * DMA tag for SGD table. The 686 uses scatter/gather DMA and 574 * requires a list in memory of work to do. We need only 16 bytes 575 * for this list, and it is wasteful to allocate 16K. 576 */ 577 if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 578 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 579 /*highaddr*/BUS_SPACE_MAXADDR, 580 /*filter*/NULL, /*filterarg*/NULL, 581 /*maxsize*/NSEGS * sizeof(struct via_dma_op), 582 /*nsegments*/1, /*maxsegz*/0x3ffff, 583 /*flags*/0, 584 &via->sgd_dmat) != 0) { 585 device_printf(dev, "unable to create dma tag\n"); 586 goto bad; 587 } 588 589 if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table, 590 BUS_DMA_NOWAIT, &via->sgd_dmamap) != 0) 591 goto bad; 592 if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table, 593 NSEGS * sizeof(struct via_dma_op), dma_cb, via, 0) != 0) 594 goto bad; 595 596 ksnprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld %s", 597 rman_get_start(via->reg), rman_get_start(via->irq), 598 PCM_KLDSTRING(snd_via82c686)); 599 600 /* Register */ 601 if (pcm_register(dev, via, 1, 1)) goto bad; 602 pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via); 603 pcm_addchan(dev, PCMDIR_REC, &viachan_class, via); 604 pcm_setstatus(dev, status); 605 return 0; 606 bad: 607 if (via->codec) ac97_destroy(via->codec); 608 if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 609 if (via->ih) bus_teardown_intr(dev, via->irq, via->ih); 610 if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 611 if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat); 612 if (via->sgd_dmamap) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 613 if (via->sgd_table) bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 614 if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat); 615 if (via->lock) snd_mtxfree(via->lock); 616 if (via) kfree(via, M_DEVBUF); 617 return ENXIO; 618 } 619 620 static int 621 via_detach(device_t dev) 622 { 623 int r; 624 struct via_info *via = 0; 625 626 r = pcm_unregister(dev); 627 if (r) 628 return r; 629 630 via = pcm_getdevinfo(dev); 631 bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 632 bus_teardown_intr(dev, via->irq, via->ih); 633 bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 634 bus_dma_tag_destroy(via->parent_dmat); 635 bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 636 bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap); 637 bus_dma_tag_destroy(via->sgd_dmat); 638 snd_mtxfree(via->lock); 639 kfree(via, M_DEVBUF); 640 return 0; 641 } 642 643 644 static device_method_t via_methods[] = { 645 DEVMETHOD(device_probe, via_probe), 646 DEVMETHOD(device_attach, via_attach), 647 DEVMETHOD(device_detach, via_detach), 648 { 0, 0} 649 }; 650 651 static driver_t via_driver = { 652 "pcm", 653 via_methods, 654 PCM_SOFTC_SIZE, 655 }; 656 657 DRIVER_MODULE(snd_via82c686, pci, via_driver, pcm_devclass, 0, 0); 658 MODULE_DEPEND(snd_via82c686, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); 659 MODULE_VERSION(snd_via82c686, 1); 660