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 #ifdef HAVE_KERNEL_OPTION_HEADERS
28 #include "opt_snd.h"
29 #endif
30
31 #include <dev/sound/pcm/sound.h>
32 #include <dev/sound/pcm/ac97.h>
33
34 #include <bus/pci/pcireg.h>
35 #include <bus/pci/pcivar.h>
36 #include <sys/sysctl.h>
37
38 #include <dev/sound/pci/via82c686.h>
39
40 SND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/pci/via82c686.c 267581 2014-06-17 16:07:57Z jhb $");
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 lock *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
123 static __inline void
via_wr(struct via_info * via,int regno,u_int32_t data,int size)124 via_wr(struct via_info *via, int regno, u_int32_t data, int size)
125 {
126
127 switch (size) {
128 case 1:
129 bus_space_write_1(via->st, via->sh, regno, data);
130 break;
131 case 2:
132 bus_space_write_2(via->st, via->sh, regno, data);
133 break;
134 case 4:
135 bus_space_write_4(via->st, via->sh, regno, data);
136 break;
137 }
138 }
139
140 /* -------------------------------------------------------------------- */
141 /* Codec interface */
142
143 static int
via_waitready_codec(struct via_info * via)144 via_waitready_codec(struct via_info *via)
145 {
146 int i;
147
148 /* poll until codec not busy */
149 for (i = 0; (i < TIMEOUT) &&
150 (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++)
151 DELAY(1);
152 if (i >= TIMEOUT) {
153 kprintf("via: codec busy\n");
154 return 1;
155 }
156
157 return 0;
158 }
159
160
161 static int
via_waitvalid_codec(struct via_info * via)162 via_waitvalid_codec(struct via_info *via)
163 {
164 int i;
165
166 /* poll until codec valid */
167 for (i = 0; (i < TIMEOUT) &&
168 !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++)
169 DELAY(1);
170 if (i >= TIMEOUT) {
171 kprintf("via: codec invalid\n");
172 return 1;
173 }
174
175 return 0;
176 }
177
178
179 static int
via_write_codec(kobj_t obj,void * addr,int reg,u_int32_t val)180 via_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val)
181 {
182 struct via_info *via = addr;
183
184 if (via_waitready_codec(via)) return -1;
185
186 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4);
187
188 return 0;
189 }
190
191
192 static int
via_read_codec(kobj_t obj,void * addr,int reg)193 via_read_codec(kobj_t obj, void *addr, int reg)
194 {
195 struct via_info *via = addr;
196
197 if (via_waitready_codec(via))
198 return -1;
199
200 via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4);
201
202 if (via_waitready_codec(via))
203 return -1;
204
205 if (via_waitvalid_codec(via))
206 return -1;
207
208 return via_rd(via, VIA_CODEC_CTL, 2);
209 }
210
211 static kobj_method_t via_ac97_methods[] = {
212 KOBJMETHOD(ac97_read, via_read_codec),
213 KOBJMETHOD(ac97_write, via_write_codec),
214 KOBJMETHOD_END
215 };
216 AC97_DECLARE(via_ac97);
217
218 /* -------------------------------------------------------------------- */
219
220 static int
via_buildsgdt(struct via_chinfo * ch)221 via_buildsgdt(struct via_chinfo *ch)
222 {
223 u_int32_t phys_addr, flag;
224 int i, segs, seg_size;
225
226 /*
227 * Build the scatter/gather DMA (SGD) table.
228 * There are four slots in the table: two for play, two for record.
229 * This creates two half-buffers, one of which is playing; the other
230 * is feeding.
231 */
232 seg_size = ch->blksz;
233 segs = sndbuf_getsize(ch->buffer) / seg_size;
234 phys_addr = sndbuf_getbufaddr(ch->buffer);
235
236 for (i = 0; i < segs; i++) {
237 flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG;
238 ch->sgd_table[i].ptr = phys_addr + (i * seg_size);
239 ch->sgd_table[i].flags = flag | seg_size;
240 }
241
242 return 0;
243 }
244
245 /* channel interface */
246 static void *
viachan_init(kobj_t obj,void * devinfo,struct snd_dbuf * b,struct pcm_channel * c,int dir)247 viachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
248 {
249 struct via_info *via = devinfo;
250 struct via_chinfo *ch;
251
252 snd_mtxlock(via->lock);
253 if (dir == PCMDIR_PLAY) {
254 ch = &via->pch;
255 ch->base = VIA_PLAY_DMAOPS_BASE;
256 ch->count = VIA_PLAY_DMAOPS_COUNT;
257 ch->ctrl = VIA_PLAY_CONTROL;
258 ch->mode = VIA_PLAY_MODE;
259 ch->sgd_addr = via->sgd_addr;
260 ch->sgd_table = &via->sgd_table[0];
261 } else {
262 ch = &via->rch;
263 ch->base = VIA_RECORD_DMAOPS_BASE;
264 ch->count = VIA_RECORD_DMAOPS_COUNT;
265 ch->ctrl = VIA_RECORD_CONTROL;
266 ch->mode = VIA_RECORD_MODE;
267 ch->sgd_addr = via->sgd_addr + sizeof(struct via_dma_op) * SEGS_PER_CHAN;
268 ch->sgd_table = &via->sgd_table[SEGS_PER_CHAN];
269 }
270
271 ch->parent = via;
272 ch->channel = c;
273 ch->buffer = b;
274 ch->dir = dir;
275 snd_mtxunlock(via->lock);
276
277 if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0)
278 return NULL;
279
280 return ch;
281 }
282
283 static int
viachan_setformat(kobj_t obj,void * data,u_int32_t format)284 viachan_setformat(kobj_t obj, void *data, u_int32_t format)
285 {
286 struct via_chinfo *ch = data;
287 struct via_info *via = ch->parent;
288 int mode, mode_set;
289
290 mode_set = 0;
291 if (AFMT_CHANNEL(format) > 1)
292 mode_set |= VIA_RPMODE_STEREO;
293 if (format & AFMT_S16_LE)
294 mode_set |= VIA_RPMODE_16BIT;
295
296 DEB(printf("set format: dir = %d, format=%x\n", ch->dir, format));
297 snd_mtxlock(via->lock);
298 mode = via_rd(via, ch->mode, 1);
299 mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO);
300 mode |= mode_set;
301 via_wr(via, ch->mode, mode, 1);
302 snd_mtxunlock(via->lock);
303
304 return 0;
305 }
306
307 static u_int32_t
viachan_setspeed(kobj_t obj,void * data,u_int32_t speed)308 viachan_setspeed(kobj_t obj, void *data, u_int32_t speed)
309 {
310 struct via_chinfo *ch = data;
311 struct via_info *via = ch->parent;
312 int reg;
313
314 /*
315 * Basic AC'97 defines a 48 kHz sample rate only. For other rates,
316 * upsampling is required.
317 *
318 * The VT82C686A does not perform upsampling, and neither do we.
319 * If the codec supports variable-rate audio (i.e. does the upsampling
320 * itself), then negotiate the rate with the codec. Otherwise,
321 * return 48 kHz cuz that's all you got.
322 */
323 if (via->codec_caps & AC97_EXTCAP_VRA) {
324 reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE;
325 return ac97_setrate(via->codec, reg, speed);
326 } else
327 return 48000;
328 }
329
330 static u_int32_t
viachan_setblocksize(kobj_t obj,void * data,u_int32_t blocksize)331 viachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
332 {
333 struct via_chinfo *ch = data;
334
335 ch->blksz = blocksize;
336 sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz);
337
338 return ch->blksz;
339 }
340
341 static int
viachan_trigger(kobj_t obj,void * data,int go)342 viachan_trigger(kobj_t obj, void *data, int go)
343 {
344 struct via_chinfo *ch = data;
345 struct via_info *via = ch->parent;
346 struct via_dma_op *ado;
347 bus_addr_t sgd_addr = ch->sgd_addr;
348
349 if (!PCMTRIG_COMMON(go))
350 return 0;
351
352 ado = ch->sgd_table;
353 DEB(printf("ado located at va=%p pa=%x\n", ado, sgd_addr));
354
355 snd_mtxlock(via->lock);
356 if (go == PCMTRIG_START) {
357 via_buildsgdt(ch);
358 via_wr(via, ch->base, sgd_addr, 4);
359 via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1);
360 } else
361 via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1);
362 snd_mtxunlock(via->lock);
363
364 DEB(printf("viachan_trigger: go=%d\n", go));
365 return 0;
366 }
367
368 static u_int32_t
viachan_getptr(kobj_t obj,void * data)369 viachan_getptr(kobj_t obj, void *data)
370 {
371 struct via_chinfo *ch = data;
372 struct via_info *via = ch->parent;
373 struct via_dma_op *ado;
374 bus_addr_t sgd_addr = ch->sgd_addr;
375 u_int32_t ptr, base, base1, len, seg;
376
377 ado = ch->sgd_table;
378 snd_mtxlock(via->lock);
379 base1 = via_rd(via, ch->base, 4);
380 len = via_rd(via, ch->count, 4);
381 base = via_rd(via, ch->base, 4);
382 if (base != base1) /* Avoid race hazard */
383 len = via_rd(via, ch->count, 4);
384 snd_mtxunlock(via->lock);
385
386 DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base));
387
388 /* Base points to SGD segment to do, one past current */
389
390 /* Determine how many segments have been done */
391 seg = (base - sgd_addr) / sizeof(struct via_dma_op);
392 if (seg == 0)
393 seg = SEGS_PER_CHAN;
394
395 /* Now work out offset: seg less count */
396 ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len;
397 if (ch->dir == PCMDIR_REC) {
398 /* DMA appears to operate on memory 'lines' of 32 bytes */
399 /* so don't return any part line - it isn't in RAM yet */
400 ptr = ptr & ~0x1f;
401 }
402
403 DEB(printf("return ptr=%u\n", ptr));
404 return ptr;
405 }
406
407 static struct pcmchan_caps *
viachan_getcaps(kobj_t obj,void * data)408 viachan_getcaps(kobj_t obj, void *data)
409 {
410 struct via_chinfo *ch = data;
411 struct via_info *via = ch->parent;
412
413 return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps;
414 }
415
416 static kobj_method_t viachan_methods[] = {
417 KOBJMETHOD(channel_init, viachan_init),
418 KOBJMETHOD(channel_setformat, viachan_setformat),
419 KOBJMETHOD(channel_setspeed, viachan_setspeed),
420 KOBJMETHOD(channel_setblocksize, viachan_setblocksize),
421 KOBJMETHOD(channel_trigger, viachan_trigger),
422 KOBJMETHOD(channel_getptr, viachan_getptr),
423 KOBJMETHOD(channel_getcaps, viachan_getcaps),
424 KOBJMETHOD_END
425 };
426 CHANNEL_DECLARE(viachan);
427
428 /* -------------------------------------------------------------------- */
429
430 static void
via_intr(void * p)431 via_intr(void *p)
432 {
433 struct via_info *via = p;
434
435 /* DEB(printf("viachan_intr\n")); */
436 /* Read channel */
437 snd_mtxlock(via->lock);
438 if (via_rd(via, VIA_PLAY_STAT, 1) & VIA_RPSTAT_INTR) {
439 via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1);
440 snd_mtxunlock(via->lock);
441 chn_intr(via->pch.channel);
442 snd_mtxlock(via->lock);
443 }
444
445 /* Write channel */
446 if (via_rd(via, VIA_RECORD_STAT, 1) & VIA_RPSTAT_INTR) {
447 via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1);
448 snd_mtxunlock(via->lock);
449 chn_intr(via->rch.channel);
450 return;
451 }
452 snd_mtxunlock(via->lock);
453 }
454
455 /*
456 * Probe and attach the card
457 */
458 static int
via_probe(device_t dev)459 via_probe(device_t dev)
460 {
461 if (pci_get_devid(dev) == VIA_PCI_ID) {
462 device_set_desc(dev, "VIA VT82C686A");
463 return BUS_PROBE_DEFAULT;
464 }
465 return ENXIO;
466 }
467
468
469 static void
dma_cb(void * p,bus_dma_segment_t * bds,int a,int b)470 dma_cb(void *p, bus_dma_segment_t *bds, int a, int b)
471 {
472 struct via_info *via = (struct via_info *)p;
473 via->sgd_addr = bds->ds_addr;
474 }
475
476
477 static int
via_attach(device_t dev)478 via_attach(device_t dev)
479 {
480 struct via_info *via = 0;
481 char status[SND_STATUSLEN];
482 u_int32_t data, cnt;
483
484 via = kmalloc(sizeof(*via), M_DEVBUF, M_WAITOK | M_ZERO);
485 via->lock = snd_mtxcreate(device_get_nameunit(dev),
486 "snd_via82c686 softc");
487
488 pci_enable_busmaster(dev);
489
490 /* Wake up and reset AC97 if necessary */
491 data = pci_read_config(dev, VIA_AC97STATUS, 1);
492
493 if ((data & VIA_AC97STATUS_RDY) == 0) {
494 /* Cold reset per ac97r2.3 spec (page 95) */
495 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */
496 DELAY(100); /* Wait T_rst_low */
497 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_NRST, 1); /* Assert high */
498 DELAY(5); /* Wait T_rst2clk */
499 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Assert low */
500 } else {
501 /* Warm reset */
502 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */
503 DELAY(100);
504 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN | VIA_ACLINK_SYNC, 1); /* Sync */
505 DELAY(5); /* Wait T_sync_high */
506 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_EN, 1); /* Force no sync */
507 DELAY(5); /* Wait T_sync2clk */
508 }
509
510 /* Power everything up */
511 pci_write_config(dev, VIA_ACLINKCTRL, VIA_ACLINK_DESIRED, 1);
512
513 /* Wait for codec to become ready (largest reported delay here 310ms) */
514 for (cnt = 0; cnt < 2000; cnt++) {
515 data = pci_read_config(dev, VIA_AC97STATUS, 1);
516 if (data & VIA_AC97STATUS_RDY)
517 break;
518 DELAY(5000);
519 }
520
521 via->regid = PCIR_BAR(0);
522 via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
523 &via->regid, RF_ACTIVE);
524 if (!via->reg) {
525 device_printf(dev, "cannot allocate bus resource.");
526 goto bad;
527 }
528 via->st = rman_get_bustag(via->reg);
529 via->sh = rman_get_bushandle(via->reg);
530
531 via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536);
532
533 via->irqid = 0;
534 via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid,
535 RF_ACTIVE | RF_SHAREABLE);
536 if (!via->irq || snd_setup_intr(dev, via->irq, INTR_MPSAFE, via_intr, via, &via->ih)) {
537 device_printf(dev, "unable to map interrupt\n");
538 goto bad;
539 }
540
541 via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1);
542 via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1);
543
544 via->codec = AC97_CREATE(dev, via, via_ac97);
545 if (!via->codec)
546 goto bad;
547
548 if (mixer_init(dev, ac97_getmixerclass(), via->codec))
549 goto bad;
550
551 via->codec_caps = ac97_getextcaps(via->codec);
552 ac97_setextmode(via->codec,
553 via->codec_caps & (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM));
554
555 /* DMA tag for buffers */
556 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
557 /*boundary*/0,
558 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
559 /*highaddr*/BUS_SPACE_MAXADDR,
560 /*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff,
561 /*flags*/0,
562 &via->parent_dmat) != 0) {
563 device_printf(dev, "unable to create dma tag\n");
564 goto bad;
565 }
566
567 /*
568 * DMA tag for SGD table. The 686 uses scatter/gather DMA and
569 * requires a list in memory of work to do. We need only 16 bytes
570 * for this list, and it is wasteful to allocate 16K.
571 */
572 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
573 /*boundary*/0,
574 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
575 /*highaddr*/BUS_SPACE_MAXADDR,
576 /*maxsize*/NSEGS * sizeof(struct via_dma_op),
577 /*nsegments*/1, /*maxsegz*/0x3ffff,
578 /*flags*/0,
579 &via->sgd_dmat) != 0) {
580 device_printf(dev, "unable to create dma tag\n");
581 goto bad;
582 }
583
584 if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table,
585 BUS_DMA_NOWAIT, &via->sgd_dmamap) != 0)
586 goto bad;
587 if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table,
588 NSEGS * sizeof(struct via_dma_op), dma_cb, via, 0) != 0)
589 goto bad;
590
591 ksnprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld %s",
592 rman_get_start(via->reg), rman_get_start(via->irq),
593 PCM_KLDSTRING(snd_via82c686));
594
595 /* Register */
596 if (pcm_register(dev, via, 1, 1)) goto bad;
597 pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via);
598 pcm_addchan(dev, PCMDIR_REC, &viachan_class, via);
599 pcm_setstatus(dev, status);
600 return 0;
601 bad:
602 if (via->codec) ac97_destroy(via->codec);
603 if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg);
604 if (via->ih) bus_teardown_intr(dev, via->irq, via->ih);
605 if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq);
606 if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat);
607 if (via->sgd_addr) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap);
608 if (via->sgd_table) bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap);
609 if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat);
610 if (via->lock) snd_mtxfree(via->lock);
611 if (via) kfree(via, M_DEVBUF);
612 return ENXIO;
613 }
614
615 static int
via_detach(device_t dev)616 via_detach(device_t dev)
617 {
618 int r;
619 struct via_info *via = 0;
620
621 r = pcm_unregister(dev);
622 if (r)
623 return r;
624
625 via = pcm_getdevinfo(dev);
626 bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg);
627 bus_teardown_intr(dev, via->irq, via->ih);
628 bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq);
629 bus_dma_tag_destroy(via->parent_dmat);
630 bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap);
631 bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap);
632 bus_dma_tag_destroy(via->sgd_dmat);
633 snd_mtxfree(via->lock);
634 kfree(via, M_DEVBUF);
635 return 0;
636 }
637
638
639 static device_method_t via_methods[] = {
640 DEVMETHOD(device_probe, via_probe),
641 DEVMETHOD(device_attach, via_attach),
642 DEVMETHOD(device_detach, via_detach),
643 { 0, 0}
644 };
645
646 static driver_t via_driver = {
647 "pcm",
648 via_methods,
649 PCM_SOFTC_SIZE,
650 };
651
652 DRIVER_MODULE(snd_via82c686, pci, via_driver, pcm_devclass, NULL, NULL);
653 MODULE_DEPEND(snd_via82c686, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
654 MODULE_VERSION(snd_via82c686, 1);
655