1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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 #define VIA_PCI_ID 0x30581106
43 #define NSEGS 4 /* Number of segments in SGD table */
44
45 #define SEGS_PER_CHAN (NSEGS/2)
46
47 #define TIMEOUT 50
48 #define VIA_DEFAULT_BUFSZ 0x1000
49
50 #undef DEB
51 #define DEB(x)
52
53 /* we rely on this struct being packed to 64 bits */
54 struct via_dma_op {
55 u_int32_t ptr;
56 u_int32_t flags;
57 #define VIA_DMAOP_EOL 0x80000000
58 #define VIA_DMAOP_FLAG 0x40000000
59 #define VIA_DMAOP_STOP 0x20000000
60 #define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF)
61 };
62
63 struct via_info;
64
65 struct via_chinfo {
66 struct via_info *parent;
67 struct pcm_channel *channel;
68 struct snd_dbuf *buffer;
69 struct via_dma_op *sgd_table;
70 bus_addr_t sgd_addr;
71 int dir, blksz;
72 int base, count, mode, ctrl;
73 };
74
75 struct via_info {
76 bus_space_tag_t st;
77 bus_space_handle_t sh;
78 bus_dma_tag_t parent_dmat;
79 bus_dma_tag_t sgd_dmat;
80 bus_dmamap_t sgd_dmamap;
81 bus_addr_t sgd_addr;
82
83 struct resource *reg, *irq;
84 int regid, irqid;
85 void *ih;
86 struct ac97_info *codec;
87
88 unsigned int bufsz;
89
90 struct via_chinfo pch, rch;
91 struct via_dma_op *sgd_table;
92 u_int16_t codec_caps;
93 struct mtx *lock;
94 };
95
96 static u_int32_t via_fmt[] = {
97 SND_FORMAT(AFMT_U8, 1, 0),
98 SND_FORMAT(AFMT_U8, 2, 0),
99 SND_FORMAT(AFMT_S16_LE, 1, 0),
100 SND_FORMAT(AFMT_S16_LE, 2, 0),
101 0
102 };
103 static struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0};
104 static struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0};
105
106 static __inline u_int32_t
via_rd(struct via_info * via,int regno,int size)107 via_rd(struct via_info *via, int regno, int size)
108 {
109
110 switch (size) {
111 case 1:
112 return bus_space_read_1(via->st, via->sh, regno);
113 case 2:
114 return bus_space_read_2(via->st, via->sh, regno);
115 case 4:
116 return bus_space_read_4(via->st, via->sh, regno);
117 default:
118 return 0xFFFFFFFF;
119 }
120 }
121
122 static __inline void
via_wr(struct via_info * via,int regno,u_int32_t data,int size)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
via_waitready_codec(struct via_info * via)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 printf("via: codec busy\n");
153 return 1;
154 }
155
156 return 0;
157 }
158
159 static int
via_waitvalid_codec(struct via_info * via)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 printf("via: codec invalid\n");
170 return 1;
171 }
172
173 return 0;
174 }
175
176 static int
via_write_codec(kobj_t obj,void * addr,int reg,u_int32_t val)177 via_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val)
178 {
179 struct via_info *via = addr;
180
181 if (via_waitready_codec(via)) return -1;
182
183 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4);
184
185 return 0;
186 }
187
188 static int
via_read_codec(kobj_t obj,void * addr,int reg)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 KOBJMETHOD_END
211 };
212 AC97_DECLARE(via_ac97);
213
214 /* -------------------------------------------------------------------- */
215
216 static int
via_buildsgdt(struct via_chinfo * ch)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 *
viachan_init(kobj_t obj,void * devinfo,struct snd_dbuf * b,struct pcm_channel * c,int dir)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
viachan_setformat(kobj_t obj,void * data,u_int32_t format)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 (AFMT_CHANNEL(format) > 1)
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 u_int32_t
viachan_setspeed(kobj_t obj,void * data,u_int32_t speed)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 u_int32_t
viachan_setblocksize(kobj_t obj,void * data,u_int32_t blocksize)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
viachan_trigger(kobj_t obj,void * data,int go)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 bus_addr_t sgd_addr = ch->sgd_addr;
343
344 if (!PCMTRIG_COMMON(go))
345 return 0;
346
347 DEB(printf("ado located at va=%p pa=%x\n", ch->sgd_table, sgd_addr));
348
349 snd_mtxlock(via->lock);
350 if (go == PCMTRIG_START) {
351 via_buildsgdt(ch);
352 via_wr(via, ch->base, sgd_addr, 4);
353 via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1);
354 } else
355 via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1);
356 snd_mtxunlock(via->lock);
357
358 DEB(printf("viachan_trigger: go=%d\n", go));
359 return 0;
360 }
361
362 static u_int32_t
viachan_getptr(kobj_t obj,void * data)363 viachan_getptr(kobj_t obj, void *data)
364 {
365 struct via_chinfo *ch = data;
366 struct via_info *via = ch->parent;
367 bus_addr_t sgd_addr = ch->sgd_addr;
368 u_int32_t ptr, base, base1, len, seg;
369
370 snd_mtxlock(via->lock);
371 base1 = via_rd(via, ch->base, 4);
372 len = via_rd(via, ch->count, 4);
373 base = via_rd(via, ch->base, 4);
374 if (base != base1) /* Avoid race hazard */
375 len = via_rd(via, ch->count, 4);
376 snd_mtxunlock(via->lock);
377
378 DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base));
379
380 /* Base points to SGD segment to do, one past current */
381
382 /* Determine how many segments have been done */
383 seg = (base - sgd_addr) / sizeof(struct via_dma_op);
384 if (seg == 0)
385 seg = SEGS_PER_CHAN;
386
387 /* Now work out offset: seg less count */
388 ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len;
389 if (ch->dir == PCMDIR_REC) {
390 /* DMA appears to operate on memory 'lines' of 32 bytes */
391 /* so don't return any part line - it isn't in RAM yet */
392 ptr = ptr & ~0x1f;
393 }
394
395 DEB(printf("return ptr=%u\n", ptr));
396 return ptr;
397 }
398
399 static struct pcmchan_caps *
viachan_getcaps(kobj_t obj,void * data)400 viachan_getcaps(kobj_t obj, void *data)
401 {
402 struct via_chinfo *ch = data;
403 struct via_info *via = ch->parent;
404
405 return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps;
406 }
407
408 static kobj_method_t viachan_methods[] = {
409 KOBJMETHOD(channel_init, viachan_init),
410 KOBJMETHOD(channel_setformat, viachan_setformat),
411 KOBJMETHOD(channel_setspeed, viachan_setspeed),
412 KOBJMETHOD(channel_setblocksize, viachan_setblocksize),
413 KOBJMETHOD(channel_trigger, viachan_trigger),
414 KOBJMETHOD(channel_getptr, viachan_getptr),
415 KOBJMETHOD(channel_getcaps, viachan_getcaps),
416 KOBJMETHOD_END
417 };
418 CHANNEL_DECLARE(viachan);
419
420 /* -------------------------------------------------------------------- */
421
422 static void
via_intr(void * p)423 via_intr(void *p)
424 {
425 struct via_info *via = p;
426
427 /* DEB(printf("viachan_intr\n")); */
428 /* Read channel */
429 snd_mtxlock(via->lock);
430 if (via_rd(via, VIA_PLAY_STAT, 1) & VIA_RPSTAT_INTR) {
431 via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1);
432 snd_mtxunlock(via->lock);
433 chn_intr(via->pch.channel);
434 snd_mtxlock(via->lock);
435 }
436
437 /* Write channel */
438 if (via_rd(via, VIA_RECORD_STAT, 1) & VIA_RPSTAT_INTR) {
439 via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1);
440 snd_mtxunlock(via->lock);
441 chn_intr(via->rch.channel);
442 return;
443 }
444 snd_mtxunlock(via->lock);
445 }
446
447 /*
448 * Probe and attach the card
449 */
450 static int
via_probe(device_t dev)451 via_probe(device_t dev)
452 {
453 if (pci_get_devid(dev) == VIA_PCI_ID) {
454 device_set_desc(dev, "VIA VT82C686A");
455 return BUS_PROBE_DEFAULT;
456 }
457 return ENXIO;
458 }
459
460 static void
dma_cb(void * p,bus_dma_segment_t * bds,int a,int b)461 dma_cb(void *p, bus_dma_segment_t *bds, int a, int b)
462 {
463 struct via_info *via = (struct via_info *)p;
464 via->sgd_addr = bds->ds_addr;
465 }
466
467 static int
via_attach(device_t dev)468 via_attach(device_t dev)
469 {
470 struct via_info *via = NULL;
471 char status[SND_STATUSLEN];
472 u_int32_t data, cnt;
473
474 via = malloc(sizeof(*via), M_DEVBUF, M_WAITOK | M_ZERO);
475 via->lock = snd_mtxcreate(device_get_nameunit(dev),
476 "snd_via82c686 softc");
477
478 pci_enable_busmaster(dev);
479
480 /* Wake up and reset AC97 if necessary */
481 data = pci_read_config(dev, VIA_AC97STATUS, 1);
482
483 if ((data & VIA_AC97STATUS_RDY) == 0) {
484 /* Cold reset per ac97r2.3 spec (page 95) */
485 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */
486 DELAY(100); /* Wait T_rst_low */
487 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_NRST, 1); /* Assert high */
488 DELAY(5); /* Wait T_rst2clk */
489 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */
490 } else {
491 /* Warm reset */
492 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */
493 DELAY(100);
494 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_SYNC, 1); /* Sync */
495 DELAY(5); /* Wait T_sync_high */
496 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */
497 DELAY(5); /* Wait T_sync2clk */
498 }
499
500 /* Power everything up */
501 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_DESIRED, 1);
502
503 /* Wait for codec to become ready (largest reported delay here 310ms) */
504 for (cnt = 0; cnt < 2000; cnt++) {
505 data = pci_read_config(dev, VIA_AC97STATUS, 1);
506 if (data & VIA_AC97STATUS_RDY)
507 break;
508 DELAY(5000);
509 }
510
511 via->regid = PCIR_BAR(0);
512 via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
513 &via->regid, RF_ACTIVE);
514 if (!via->reg) {
515 device_printf(dev, "cannot allocate bus resource.");
516 goto bad;
517 }
518 via->st = rman_get_bustag(via->reg);
519 via->sh = rman_get_bushandle(via->reg);
520
521 via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536);
522
523 via->irqid = 0;
524 via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid,
525 RF_ACTIVE | RF_SHAREABLE);
526 if (!via->irq || snd_setup_intr(dev, via->irq, INTR_MPSAFE, via_intr, via, &via->ih)) {
527 device_printf(dev, "unable to map interrupt\n");
528 goto bad;
529 }
530
531 via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1);
532 via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1);
533
534 via->codec = AC97_CREATE(dev, via, via_ac97);
535 if (!via->codec)
536 goto bad;
537
538 if (mixer_init(dev, ac97_getmixerclass(), via->codec))
539 goto bad;
540
541 via->codec_caps = ac97_getextcaps(via->codec);
542 ac97_setextmode(via->codec,
543 via->codec_caps & (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM));
544
545 /* DMA tag for buffers */
546 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
547 /*boundary*/0,
548 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
549 /*highaddr*/BUS_SPACE_MAXADDR,
550 /*filter*/NULL, /*filterarg*/NULL,
551 /*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff,
552 /*flags*/0, /*lockfunc*/NULL,
553 /*lockarg*/NULL, &via->parent_dmat) != 0) {
554 device_printf(dev, "unable to create dma tag\n");
555 goto bad;
556 }
557
558 /*
559 * DMA tag for SGD table. The 686 uses scatter/gather DMA and
560 * requires a list in memory of work to do. We need only 16 bytes
561 * for this list, and it is wasteful to allocate 16K.
562 */
563 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
564 /*boundary*/0,
565 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
566 /*highaddr*/BUS_SPACE_MAXADDR,
567 /*filter*/NULL, /*filterarg*/NULL,
568 /*maxsize*/NSEGS * sizeof(struct via_dma_op),
569 /*nsegments*/1, /*maxsegz*/0x3ffff,
570 /*flags*/0, /*lockfunc*/NULL,
571 /*lockarg*/NULL, &via->sgd_dmat) != 0) {
572 device_printf(dev, "unable to create dma tag\n");
573 goto bad;
574 }
575
576 if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table,
577 BUS_DMA_NOWAIT, &via->sgd_dmamap) != 0)
578 goto bad;
579 if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table,
580 NSEGS * sizeof(struct via_dma_op), dma_cb, via, 0) != 0)
581 goto bad;
582
583 snprintf(status, SND_STATUSLEN, "port 0x%jx irq %jd on %s",
584 rman_get_start(via->reg), rman_get_start(via->irq),
585 device_get_nameunit(device_get_parent(dev)));
586
587 /* Register */
588 pcm_init(dev, via);
589 pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via);
590 pcm_addchan(dev, PCMDIR_REC, &viachan_class, via);
591 if (pcm_register(dev, status))
592 goto bad;
593 return 0;
594 bad:
595 if (via->codec) ac97_destroy(via->codec);
596 if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg);
597 if (via->ih) bus_teardown_intr(dev, via->irq, via->ih);
598 if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq);
599 if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat);
600 if (via->sgd_addr) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap);
601 if (via->sgd_table) bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap);
602 if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat);
603 if (via->lock) snd_mtxfree(via->lock);
604 if (via) free(via, M_DEVBUF);
605 return ENXIO;
606 }
607
608 static int
via_detach(device_t dev)609 via_detach(device_t dev)
610 {
611 int r;
612 struct via_info *via = NULL;
613
614 r = pcm_unregister(dev);
615 if (r)
616 return r;
617
618 via = pcm_getdevinfo(dev);
619 bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg);
620 bus_teardown_intr(dev, via->irq, via->ih);
621 bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq);
622 bus_dma_tag_destroy(via->parent_dmat);
623 bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap);
624 bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap);
625 bus_dma_tag_destroy(via->sgd_dmat);
626 snd_mtxfree(via->lock);
627 free(via, M_DEVBUF);
628 return 0;
629 }
630
631 static device_method_t via_methods[] = {
632 DEVMETHOD(device_probe, via_probe),
633 DEVMETHOD(device_attach, via_attach),
634 DEVMETHOD(device_detach, via_detach),
635 { 0, 0}
636 };
637
638 static driver_t via_driver = {
639 "pcm",
640 via_methods,
641 PCM_SOFTC_SIZE,
642 };
643
644 DRIVER_MODULE(snd_via82c686, pci, via_driver, 0, 0);
645 MODULE_DEPEND(snd_via82c686, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
646 MODULE_VERSION(snd_via82c686, 1);
647