1 /*-
2 * Copyright (c) 2002 Orion Hodson <orion@freebsd.org>
3 * Portions of this code derived from via82c686.c:
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 /*
30 * Credits due to:
31 *
32 * Grzybowski Rafal, Russell Davies, Mark Handley, Daniel O'Connor for
33 * comments, machine time, testing patches, and patience. VIA for
34 * providing specs. ALSA for helpful comments and some register poke
35 * ordering.
36 */
37
38 #ifdef HAVE_KERNEL_OPTION_HEADERS
39 #include "opt_snd.h"
40 #endif
41
42 #include <dev/sound/pcm/sound.h>
43 #include <dev/sound/pcm/ac97.h>
44
45 #include <bus/pci/pcireg.h>
46 #include <bus/pci/pcivar.h>
47 #include <sys/sysctl.h>
48
49 #include <dev/sound/pci/via8233.h>
50
51 SND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/pci/via8233.c 267581 2014-06-17 16:07:57Z jhb $");
52
53 #define VIA8233_PCI_ID 0x30591106
54
55 #define VIA8233_REV_ID_8233PRE 0x10
56 #define VIA8233_REV_ID_8233C 0x20
57 #define VIA8233_REV_ID_8233 0x30
58 #define VIA8233_REV_ID_8233A 0x40
59 #define VIA8233_REV_ID_8235 0x50
60 #define VIA8233_REV_ID_8237 0x60
61 #define VIA8233_REV_ID_8251 0x70
62
63 #define SEGS_PER_CHAN 2 /* Segments per channel */
64 #define NDXSCHANS 4 /* No of DXS channels */
65 #define NMSGDCHANS 1 /* No of multichannel SGD */
66 #define NWRCHANS 1 /* No of write channels */
67 #define NCHANS (NWRCHANS + NDXSCHANS + NMSGDCHANS)
68 #define NSEGS NCHANS * SEGS_PER_CHAN /* Segments in SGD table */
69 #define VIA_SEGS_MIN 2
70 #define VIA_SEGS_MAX 64
71 #define VIA_SEGS_DEFAULT 2
72 #define VIA_BLK_MIN 32
73 #define VIA_BLK_ALIGN (~(VIA_BLK_MIN - 1))
74
75 #define VIA_DEFAULT_BUFSZ 0x1000
76
77 /* we rely on this struct being packed to 64 bits */
78 struct via_dma_op {
79 volatile uint32_t ptr;
80 volatile uint32_t flags;
81 #define VIA_DMAOP_EOL 0x80000000
82 #define VIA_DMAOP_FLAG 0x40000000
83 #define VIA_DMAOP_STOP 0x20000000
84 #define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF)
85 };
86
87 struct via_info;
88
89 struct via_chinfo {
90 struct via_info *parent;
91 struct pcm_channel *channel;
92 struct snd_dbuf *buffer;
93 struct via_dma_op *sgd_table;
94 bus_addr_t sgd_addr;
95 int dir, rbase, active;
96 unsigned int blksz, blkcnt;
97 unsigned int ptr, prevptr;
98 };
99
100 struct via_info {
101 device_t dev;
102
103 bus_space_tag_t st;
104 bus_space_handle_t sh;
105 bus_dma_tag_t parent_dmat;
106 bus_dma_tag_t sgd_dmat;
107 bus_dmamap_t sgd_dmamap;
108 bus_addr_t sgd_addr;
109
110 struct resource *reg, *irq;
111 int regid, irqid;
112 void *ih;
113 struct ac97_info *codec;
114
115 unsigned int bufsz, blkcnt;
116 int dxs_src, dma_eol_wake;
117
118 struct via_chinfo pch[NDXSCHANS + NMSGDCHANS];
119 struct via_chinfo rch[NWRCHANS];
120 struct via_dma_op *sgd_table;
121 uint16_t codec_caps;
122 uint16_t n_dxs_registered;
123 int play_num, rec_num;
124 struct lock *lock;
125 struct callout poll_timer;
126 int poll_ticks, polling;
127 };
128
129 static uint32_t via_fmt[] = {
130 SND_FORMAT(AFMT_U8, 1, 0),
131 SND_FORMAT(AFMT_U8, 2, 0),
132 SND_FORMAT(AFMT_S16_LE, 1, 0),
133 SND_FORMAT(AFMT_S16_LE, 2, 0),
134 0
135 };
136
137 static struct pcmchan_caps via_vracaps = { 4000, 48000, via_fmt, 0 };
138 static struct pcmchan_caps via_caps = { 48000, 48000, via_fmt, 0 };
139
140 static __inline int
via_chan_active(struct via_info * via)141 via_chan_active(struct via_info *via)
142 {
143 int i, ret = 0;
144
145 if (via == NULL)
146 return (0);
147
148 for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++)
149 ret += via->pch[i].active;
150
151 for (i = 0; i < NWRCHANS; i++)
152 ret += via->rch[i].active;
153
154 return (ret);
155 }
156
157 static int
sysctl_via8233_spdif_enable(SYSCTL_HANDLER_ARGS)158 sysctl_via8233_spdif_enable(SYSCTL_HANDLER_ARGS)
159 {
160 struct via_info *via;
161 device_t dev;
162 uint32_t r;
163 int err, new_en;
164
165 dev = oidp->oid_arg1;
166 via = pcm_getdevinfo(dev);
167 snd_mtxlock(via->lock);
168 r = pci_read_config(dev, VIA_PCI_SPDIF, 1);
169 snd_mtxunlock(via->lock);
170 new_en = (r & VIA_SPDIF_EN) ? 1 : 0;
171 err = sysctl_handle_int(oidp, &new_en, 0, req);
172
173 if (err || req->newptr == NULL)
174 return (err);
175 if (new_en < 0 || new_en > 1)
176 return (EINVAL);
177
178 if (new_en)
179 r |= VIA_SPDIF_EN;
180 else
181 r &= ~VIA_SPDIF_EN;
182 snd_mtxlock(via->lock);
183 pci_write_config(dev, VIA_PCI_SPDIF, r, 1);
184 snd_mtxunlock(via->lock);
185
186 return (0);
187 }
188
189 static int
sysctl_via8233_dxs_src(SYSCTL_HANDLER_ARGS)190 sysctl_via8233_dxs_src(SYSCTL_HANDLER_ARGS)
191 {
192 struct via_info *via;
193 device_t dev;
194 int err, val;
195
196 dev = oidp->oid_arg1;
197 via = pcm_getdevinfo(dev);
198 snd_mtxlock(via->lock);
199 val = via->dxs_src;
200 snd_mtxunlock(via->lock);
201 err = sysctl_handle_int(oidp, &val, 0, req);
202
203 if (err || req->newptr == NULL)
204 return (err);
205 if (val < 0 || val > 1)
206 return (EINVAL);
207
208 snd_mtxlock(via->lock);
209 via->dxs_src = val;
210 snd_mtxunlock(via->lock);
211
212 return (0);
213 }
214
215 static int
sysctl_via_polling(SYSCTL_HANDLER_ARGS)216 sysctl_via_polling(SYSCTL_HANDLER_ARGS)
217 {
218 struct via_info *via;
219 device_t dev;
220 int err, val;
221
222 dev = oidp->oid_arg1;
223 via = pcm_getdevinfo(dev);
224 if (via == NULL)
225 return (EINVAL);
226 snd_mtxlock(via->lock);
227 val = via->polling;
228 snd_mtxunlock(via->lock);
229 err = sysctl_handle_int(oidp, &val, 0, req);
230
231 if (err || req->newptr == NULL)
232 return (err);
233 if (val < 0 || val > 1)
234 return (EINVAL);
235
236 snd_mtxlock(via->lock);
237 if (val != via->polling) {
238 if (via_chan_active(via) != 0)
239 err = EBUSY;
240 else if (val == 0)
241 via->polling = 0;
242 else
243 via->polling = 1;
244 }
245 snd_mtxunlock(via->lock);
246
247 return (err);
248 }
249
250 static void
via_init_sysctls(device_t dev)251 via_init_sysctls(device_t dev)
252 {
253 /* XXX: an user should be able to set this with a control tool,
254 if not done before 7.0-RELEASE, this needs to be converted to
255 a device specific sysctl "dev.pcm.X.yyy" via device_get_sysctl_*()
256 as discussed on multimedia@ in msg-id <861wujij2q.fsf@xps.des.no> */
257 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
258 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
259 "spdif_enabled", CTLTYPE_INT | CTLFLAG_RW, dev, sizeof(dev),
260 sysctl_via8233_spdif_enable, "I",
261 "Enable S/PDIF output on primary playback channel");
262 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
263 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
264 "dxs_src", CTLTYPE_INT | CTLFLAG_RW, dev, sizeof(dev),
265 sysctl_via8233_dxs_src, "I",
266 "Enable VIA DXS Sample Rate Converter");
267 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
268 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
269 "polling", CTLTYPE_INT | CTLFLAG_RW, dev, sizeof(dev),
270 sysctl_via_polling, "I",
271 "Enable polling mode");
272 }
273
274 static __inline uint32_t
via_rd(struct via_info * via,int regno,int size)275 via_rd(struct via_info *via, int regno, int size)
276 {
277 switch (size) {
278 case 1:
279 return (bus_space_read_1(via->st, via->sh, regno));
280 case 2:
281 return (bus_space_read_2(via->st, via->sh, regno));
282 case 4:
283 return (bus_space_read_4(via->st, via->sh, regno));
284 default:
285 return (0xFFFFFFFF);
286 }
287 }
288
289 static __inline void
via_wr(struct via_info * via,int regno,uint32_t data,int size)290 via_wr(struct via_info *via, int regno, uint32_t data, int size)
291 {
292
293 switch (size) {
294 case 1:
295 bus_space_write_1(via->st, via->sh, regno, data);
296 break;
297 case 2:
298 bus_space_write_2(via->st, via->sh, regno, data);
299 break;
300 case 4:
301 bus_space_write_4(via->st, via->sh, regno, data);
302 break;
303 }
304 }
305
306 /* -------------------------------------------------------------------- */
307 /* Codec interface */
308
309 static int
via_waitready_codec(struct via_info * via)310 via_waitready_codec(struct via_info *via)
311 {
312 int i;
313
314 /* poll until codec not busy */
315 for (i = 0; i < 1000; i++) {
316 if ((via_rd(via, VIA_AC97_CONTROL, 4) & VIA_AC97_BUSY) == 0)
317 return (0);
318 DELAY(1);
319 }
320 device_printf(via->dev, "%s: codec busy\n", __func__);
321 return (1);
322 }
323
324 static int
via_waitvalid_codec(struct via_info * via)325 via_waitvalid_codec(struct via_info *via)
326 {
327 int i;
328
329 /* poll until codec valid */
330 for (i = 0; i < 1000; i++) {
331 if (via_rd(via, VIA_AC97_CONTROL, 4) & VIA_AC97_CODEC00_VALID)
332 return (0);
333 DELAY(1);
334 }
335 device_printf(via->dev, "%s: codec invalid\n", __func__);
336 return (1);
337 }
338
339 static int
via_write_codec(kobj_t obj,void * addr,int reg,uint32_t val)340 via_write_codec(kobj_t obj, void *addr, int reg, uint32_t val)
341 {
342 struct via_info *via = addr;
343
344 if (via_waitready_codec(via))
345 return (-1);
346
347 via_wr(via, VIA_AC97_CONTROL,
348 VIA_AC97_CODEC00_VALID | VIA_AC97_INDEX(reg) |
349 VIA_AC97_DATA(val), 4);
350
351 return (0);
352 }
353
354 static int
via_read_codec(kobj_t obj,void * addr,int reg)355 via_read_codec(kobj_t obj, void *addr, int reg)
356 {
357 struct via_info *via = addr;
358
359 if (via_waitready_codec(via))
360 return (-1);
361
362 via_wr(via, VIA_AC97_CONTROL, VIA_AC97_CODEC00_VALID |
363 VIA_AC97_READ | VIA_AC97_INDEX(reg), 4);
364
365 if (via_waitready_codec(via))
366 return (-1);
367
368 if (via_waitvalid_codec(via))
369 return (-1);
370
371 return (via_rd(via, VIA_AC97_CONTROL, 2));
372 }
373
374 static kobj_method_t via_ac97_methods[] = {
375 KOBJMETHOD(ac97_read, via_read_codec),
376 KOBJMETHOD(ac97_write, via_write_codec),
377 KOBJMETHOD_END
378 };
379 AC97_DECLARE(via_ac97);
380
381 /* -------------------------------------------------------------------- */
382
383 static int
via_buildsgdt(struct via_chinfo * ch)384 via_buildsgdt(struct via_chinfo *ch)
385 {
386 uint32_t phys_addr, flag;
387 int i;
388
389 phys_addr = sndbuf_getbufaddr(ch->buffer);
390
391 for (i = 0; i < ch->blkcnt; i++) {
392 flag = (i == ch->blkcnt - 1) ? VIA_DMAOP_EOL : VIA_DMAOP_FLAG;
393 ch->sgd_table[i].ptr = phys_addr + (i * ch->blksz);
394 ch->sgd_table[i].flags = flag | ch->blksz;
395 }
396
397 return (0);
398 }
399
400 /* -------------------------------------------------------------------- */
401 /* Format setting functions */
402
403 static int
via8233wr_setformat(kobj_t obj,void * data,uint32_t format)404 via8233wr_setformat(kobj_t obj, void *data, uint32_t format)
405 {
406 struct via_chinfo *ch = data;
407 struct via_info *via = ch->parent;
408
409 uint32_t f = WR_FORMAT_STOP_INDEX;
410
411 if (AFMT_CHANNEL(format) > 1)
412 f |= WR_FORMAT_STEREO;
413 if (format & AFMT_S16_LE)
414 f |= WR_FORMAT_16BIT;
415 snd_mtxlock(via->lock);
416 via_wr(via, VIA_WR0_FORMAT, f, 4);
417 snd_mtxunlock(via->lock);
418
419 return (0);
420 }
421
422 static int
via8233dxs_setformat(kobj_t obj,void * data,uint32_t format)423 via8233dxs_setformat(kobj_t obj, void *data, uint32_t format)
424 {
425 struct via_chinfo *ch = data;
426 struct via_info *via = ch->parent;
427 uint32_t r, v;
428
429 r = ch->rbase + VIA8233_RP_DXS_RATEFMT;
430 snd_mtxlock(via->lock);
431 v = via_rd(via, r, 4);
432
433 v &= ~(VIA8233_DXS_RATEFMT_STEREO | VIA8233_DXS_RATEFMT_16BIT);
434 if (AFMT_CHANNEL(format) > 1)
435 v |= VIA8233_DXS_RATEFMT_STEREO;
436 if (format & AFMT_16BIT)
437 v |= VIA8233_DXS_RATEFMT_16BIT;
438 via_wr(via, r, v, 4);
439 snd_mtxunlock(via->lock);
440
441 return (0);
442 }
443
444 static int
via8233msgd_setformat(kobj_t obj,void * data,uint32_t format)445 via8233msgd_setformat(kobj_t obj, void *data, uint32_t format)
446 {
447 struct via_chinfo *ch = data;
448 struct via_info *via = ch->parent;
449
450 uint32_t s = 0xff000000;
451 uint8_t v = (format & AFMT_S16_LE) ? MC_SGD_16BIT : MC_SGD_8BIT;
452
453 if (AFMT_CHANNEL(format) > 1) {
454 v |= MC_SGD_CHANNELS(2);
455 s |= SLOT3(1) | SLOT4(2);
456 } else {
457 v |= MC_SGD_CHANNELS(1);
458 s |= SLOT3(1) | SLOT4(1);
459 }
460
461 snd_mtxlock(via->lock);
462 via_wr(via, VIA_MC_SLOT_SELECT, s, 4);
463 via_wr(via, VIA_MC_SGD_FORMAT, v, 1);
464 snd_mtxunlock(via->lock);
465
466 return (0);
467 }
468
469 /* -------------------------------------------------------------------- */
470 /* Speed setting functions */
471
472 static uint32_t
via8233wr_setspeed(kobj_t obj,void * data,uint32_t speed)473 via8233wr_setspeed(kobj_t obj, void *data, uint32_t speed)
474 {
475 struct via_chinfo *ch = data;
476 struct via_info *via = ch->parent;
477
478 if (via->codec_caps & AC97_EXTCAP_VRA)
479 return (ac97_setrate(via->codec, AC97_REGEXT_LADCRATE, speed));
480
481 return (48000);
482 }
483
484 static uint32_t
via8233dxs_setspeed(kobj_t obj,void * data,uint32_t speed)485 via8233dxs_setspeed(kobj_t obj, void *data, uint32_t speed)
486 {
487 struct via_chinfo *ch = data;
488 struct via_info *via = ch->parent;
489 uint32_t r, v;
490
491 r = ch->rbase + VIA8233_RP_DXS_RATEFMT;
492 snd_mtxlock(via->lock);
493 v = via_rd(via, r, 4) & ~VIA8233_DXS_RATEFMT_48K;
494
495 /* Careful to avoid overflow (divide by 48 per vt8233c docs) */
496
497 v |= VIA8233_DXS_RATEFMT_48K * (speed / 48) / (48000 / 48);
498 via_wr(via, r, v, 4);
499 snd_mtxunlock(via->lock);
500
501 return (speed);
502 }
503
504 static uint32_t
via8233msgd_setspeed(kobj_t obj,void * data,uint32_t speed)505 via8233msgd_setspeed(kobj_t obj, void *data, uint32_t speed)
506 {
507 struct via_chinfo *ch = data;
508 struct via_info *via = ch->parent;
509
510 if (via->codec_caps & AC97_EXTCAP_VRA)
511 return (ac97_setrate(via->codec, AC97_REGEXT_FDACRATE, speed));
512
513 return (48000);
514 }
515
516 /* -------------------------------------------------------------------- */
517 /* Format probing functions */
518
519 static struct pcmchan_caps *
via8233wr_getcaps(kobj_t obj,void * data)520 via8233wr_getcaps(kobj_t obj, void *data)
521 {
522 struct via_chinfo *ch = data;
523 struct via_info *via = ch->parent;
524
525 /* Controlled by ac97 registers */
526 if (via->codec_caps & AC97_EXTCAP_VRA)
527 return (&via_vracaps);
528 return (&via_caps);
529 }
530
531 static struct pcmchan_caps *
via8233dxs_getcaps(kobj_t obj,void * data)532 via8233dxs_getcaps(kobj_t obj, void *data)
533 {
534 struct via_chinfo *ch = data;
535 struct via_info *via = ch->parent;
536
537 /*
538 * Controlled by onboard registers
539 *
540 * Apparently, few boards can do DXS sample rate
541 * conversion.
542 */
543 if (via->dxs_src)
544 return (&via_vracaps);
545 return (&via_caps);
546 }
547
548 static struct pcmchan_caps *
via8233msgd_getcaps(kobj_t obj,void * data)549 via8233msgd_getcaps(kobj_t obj, void *data)
550 {
551 struct via_chinfo *ch = data;
552 struct via_info *via = ch->parent;
553
554 /* Controlled by ac97 registers */
555 if (via->codec_caps & AC97_EXTCAP_VRA)
556 return (&via_vracaps);
557 return (&via_caps);
558 }
559
560 /* -------------------------------------------------------------------- */
561 /* Common functions */
562
563 static int
via8233chan_setfragments(kobj_t obj,void * data,uint32_t blksz,uint32_t blkcnt)564 via8233chan_setfragments(kobj_t obj, void *data,
565 uint32_t blksz, uint32_t blkcnt)
566 {
567 struct via_chinfo *ch = data;
568 struct via_info *via = ch->parent;
569
570 blksz &= VIA_BLK_ALIGN;
571
572 if (blksz > (sndbuf_getmaxsize(ch->buffer) / VIA_SEGS_MIN))
573 blksz = sndbuf_getmaxsize(ch->buffer) / VIA_SEGS_MIN;
574 if (blksz < VIA_BLK_MIN)
575 blksz = VIA_BLK_MIN;
576 if (blkcnt > VIA_SEGS_MAX)
577 blkcnt = VIA_SEGS_MAX;
578 if (blkcnt < VIA_SEGS_MIN)
579 blkcnt = VIA_SEGS_MIN;
580
581 while ((blksz * blkcnt) > sndbuf_getmaxsize(ch->buffer)) {
582 if ((blkcnt >> 1) >= VIA_SEGS_MIN)
583 blkcnt >>= 1;
584 else if ((blksz >> 1) >= VIA_BLK_MIN)
585 blksz >>= 1;
586 else
587 break;
588 }
589
590 if ((sndbuf_getblksz(ch->buffer) != blksz ||
591 sndbuf_getblkcnt(ch->buffer) != blkcnt) &&
592 sndbuf_resize(ch->buffer, blkcnt, blksz) != 0)
593 device_printf(via->dev, "%s: failed blksz=%u blkcnt=%u\n",
594 __func__, blksz, blkcnt);
595
596 ch->blksz = sndbuf_getblksz(ch->buffer);
597 ch->blkcnt = sndbuf_getblkcnt(ch->buffer);
598
599 return (0);
600 }
601
602 static uint32_t
via8233chan_setblocksize(kobj_t obj,void * data,uint32_t blksz)603 via8233chan_setblocksize(kobj_t obj, void *data, uint32_t blksz)
604 {
605 struct via_chinfo *ch = data;
606 struct via_info *via = ch->parent;
607
608 via8233chan_setfragments(obj, data, blksz, via->blkcnt);
609
610 return (ch->blksz);
611 }
612
613 static uint32_t
via8233chan_getptr(kobj_t obj,void * data)614 via8233chan_getptr(kobj_t obj, void *data)
615 {
616 struct via_chinfo *ch = data;
617 struct via_info *via = ch->parent;
618 uint32_t v, index, count, ptr;
619
620 snd_mtxlock(via->lock);
621 if (via->polling != 0) {
622 ptr = ch->ptr;
623 snd_mtxunlock(via->lock);
624 } else {
625 v = via_rd(via, ch->rbase + VIA_RP_CURRENT_COUNT, 4);
626 snd_mtxunlock(via->lock);
627 index = v >> 24; /* Last completed buffer */
628 count = v & 0x00ffffff; /* Bytes remaining */
629 ptr = (index + 1) * ch->blksz - count;
630 ptr %= ch->blkcnt * ch->blksz; /* Wrap to available space */
631 }
632
633 return (ptr);
634 }
635
636 static void
via8233chan_reset(struct via_info * via,struct via_chinfo * ch)637 via8233chan_reset(struct via_info *via, struct via_chinfo *ch)
638 {
639 via_wr(via, ch->rbase + VIA_RP_CONTROL, SGD_CONTROL_STOP, 1);
640 via_wr(via, ch->rbase + VIA_RP_CONTROL, 0x00, 1);
641 via_wr(via, ch->rbase + VIA_RP_STATUS,
642 SGD_STATUS_EOL | SGD_STATUS_FLAG, 1);
643 }
644
645 /* -------------------------------------------------------------------- */
646 /* Channel initialization functions */
647
648 static void
via8233chan_sgdinit(struct via_info * via,struct via_chinfo * ch,int chnum)649 via8233chan_sgdinit(struct via_info *via, struct via_chinfo *ch, int chnum)
650 {
651 ch->sgd_table = &via->sgd_table[chnum * VIA_SEGS_MAX];
652 ch->sgd_addr = via->sgd_addr + chnum * VIA_SEGS_MAX *
653 sizeof(struct via_dma_op);
654 }
655
656 static void*
via8233wr_init(kobj_t obj,void * devinfo,struct snd_dbuf * b,struct pcm_channel * c,int dir)657 via8233wr_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
658 struct pcm_channel *c, int dir)
659 {
660 struct via_info *via = devinfo;
661 struct via_chinfo *ch;
662 int num;
663
664 snd_mtxlock(via->lock);
665 num = via->rec_num++;
666 ch = &via->rch[num];
667 ch->parent = via;
668 ch->channel = c;
669 ch->buffer = b;
670 ch->dir = dir;
671 ch->blkcnt = via->blkcnt;
672 ch->rbase = VIA_WR_BASE(num);
673 via_wr(via, ch->rbase + VIA_WR_RP_SGD_FORMAT, WR_FIFO_ENABLE, 1);
674 snd_mtxunlock(via->lock);
675
676 if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0)
677 return (NULL);
678
679 snd_mtxlock(via->lock);
680 via8233chan_sgdinit(via, ch, num);
681 via8233chan_reset(via, ch);
682 snd_mtxunlock(via->lock);
683
684 return (ch);
685 }
686
687 static void*
via8233dxs_init(kobj_t obj,void * devinfo,struct snd_dbuf * b,struct pcm_channel * c,int dir)688 via8233dxs_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
689 struct pcm_channel *c, int dir)
690 {
691 struct via_info *via = devinfo;
692 struct via_chinfo *ch;
693 int num;
694
695 snd_mtxlock(via->lock);
696 num = via->play_num++;
697 ch = &via->pch[num];
698 ch->parent = via;
699 ch->channel = c;
700 ch->buffer = b;
701 ch->dir = dir;
702 ch->blkcnt = via->blkcnt;
703
704 /*
705 * All cards apparently support DXS3, but not other DXS
706 * channels. We therefore want to align first DXS channel to
707 * DXS3.
708 */
709 ch->rbase = VIA_DXS_BASE(NDXSCHANS - 1 - via->n_dxs_registered);
710 via->n_dxs_registered++;
711 snd_mtxunlock(via->lock);
712
713 if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0)
714 return (NULL);
715
716 snd_mtxlock(via->lock);
717 via8233chan_sgdinit(via, ch, NWRCHANS + num);
718 via8233chan_reset(via, ch);
719 snd_mtxunlock(via->lock);
720
721 return (ch);
722 }
723
724 static void*
via8233msgd_init(kobj_t obj,void * devinfo,struct snd_dbuf * b,struct pcm_channel * c,int dir)725 via8233msgd_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
726 struct pcm_channel *c, int dir)
727 {
728 struct via_info *via = devinfo;
729 struct via_chinfo *ch;
730 int num;
731
732 snd_mtxlock(via->lock);
733 num = via->play_num++;
734 ch = &via->pch[num];
735 ch->parent = via;
736 ch->channel = c;
737 ch->buffer = b;
738 ch->dir = dir;
739 ch->rbase = VIA_MC_SGD_STATUS;
740 ch->blkcnt = via->blkcnt;
741 snd_mtxunlock(via->lock);
742
743 if (sndbuf_alloc(ch->buffer, via->parent_dmat, 0, via->bufsz) != 0)
744 return (NULL);
745
746 snd_mtxlock(via->lock);
747 via8233chan_sgdinit(via, ch, NWRCHANS + num);
748 via8233chan_reset(via, ch);
749 snd_mtxunlock(via->lock);
750
751 return (ch);
752 }
753
754 static void
via8233chan_mute(struct via_info * via,struct via_chinfo * ch,int muted)755 via8233chan_mute(struct via_info *via, struct via_chinfo *ch, int muted)
756 {
757 if (BASE_IS_VIA_DXS_REG(ch->rbase)) {
758 int r;
759 muted = (muted) ? VIA8233_DXS_MUTE : 0;
760 via_wr(via, ch->rbase + VIA8233_RP_DXS_LVOL, muted, 1);
761 via_wr(via, ch->rbase + VIA8233_RP_DXS_RVOL, muted, 1);
762 r = via_rd(via, ch->rbase + VIA8233_RP_DXS_LVOL, 1) &
763 VIA8233_DXS_MUTE;
764 if (r != muted)
765 device_printf(via->dev,
766 "%s: failed to set dxs volume "
767 "(dxs base 0x%02x).\n", __func__, ch->rbase);
768 }
769 }
770
771 static __inline int
via_poll_channel(struct via_chinfo * ch)772 via_poll_channel(struct via_chinfo *ch)
773 {
774 struct via_info *via;
775 uint32_t sz, delta;
776 uint32_t v, index, count;
777 int ptr;
778
779 if (ch == NULL || ch->channel == NULL || ch->active == 0)
780 return (0);
781
782 via = ch->parent;
783 sz = ch->blksz * ch->blkcnt;
784 v = via_rd(via, ch->rbase + VIA_RP_CURRENT_COUNT, 4);
785 index = v >> 24;
786 count = v & 0x00ffffff;
787 ptr = ((index + 1) * ch->blksz) - count;
788 ptr %= sz;
789 ptr &= ~(ch->blksz - 1);
790 ch->ptr = ptr;
791 delta = (sz + ptr - ch->prevptr) % sz;
792
793 if (delta < ch->blksz)
794 return (0);
795
796 ch->prevptr = ptr;
797
798 return (1);
799 }
800
801 static void
via_poll_callback(void * arg)802 via_poll_callback(void *arg)
803 {
804 struct via_info *via = arg;
805 uint32_t ptrigger = 0, rtrigger = 0;
806 int i;
807
808 if (via == NULL)
809 return;
810
811 snd_mtxlock(via->lock);
812 if (via->polling == 0 || via_chan_active(via) == 0) {
813 snd_mtxunlock(via->lock);
814 return;
815 }
816
817 for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++)
818 ptrigger |= (via_poll_channel(&via->pch[i]) != 0) ?
819 (1 << i) : 0;
820
821 for (i = 0; i < NWRCHANS; i++)
822 rtrigger |= (via_poll_channel(&via->rch[i]) != 0) ?
823 (1 << i) : 0;
824
825 /* XXX */
826 callout_reset(&via->poll_timer, 1/*via->poll_ticks*/,
827 via_poll_callback, via);
828
829 snd_mtxunlock(via->lock);
830
831 for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++) {
832 if (ptrigger & (1 << i))
833 chn_intr(via->pch[i].channel);
834 }
835 for (i = 0; i < NWRCHANS; i++) {
836 if (rtrigger & (1 << i))
837 chn_intr(via->rch[i].channel);
838 }
839 }
840
841 static int
via_poll_ticks(struct via_info * via)842 via_poll_ticks(struct via_info *via)
843 {
844 struct via_chinfo *ch;
845 int i;
846 int ret = hz;
847 int pollticks;
848
849 for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++) {
850 ch = &via->pch[i];
851 if (ch->channel == NULL || ch->active == 0)
852 continue;
853 pollticks = ((uint64_t)hz * ch->blksz) /
854 ((uint64_t)sndbuf_getalign(ch->buffer) *
855 sndbuf_getspd(ch->buffer));
856 pollticks >>= 2;
857 if (pollticks > hz)
858 pollticks = hz;
859 if (pollticks < 1)
860 pollticks = 1;
861 if (pollticks < ret)
862 ret = pollticks;
863 }
864
865 for (i = 0; i < NWRCHANS; i++) {
866 ch = &via->rch[i];
867 if (ch->channel == NULL || ch->active == 0)
868 continue;
869 pollticks = ((uint64_t)hz * ch->blksz) /
870 ((uint64_t)sndbuf_getalign(ch->buffer) *
871 sndbuf_getspd(ch->buffer));
872 pollticks >>= 2;
873 if (pollticks > hz)
874 pollticks = hz;
875 if (pollticks < 1)
876 pollticks = 1;
877 if (pollticks < ret)
878 ret = pollticks;
879 }
880
881 return (ret);
882 }
883
884 static int
via8233chan_trigger(kobj_t obj,void * data,int go)885 via8233chan_trigger(kobj_t obj, void* data, int go)
886 {
887 struct via_chinfo *ch = data;
888 struct via_info *via = ch->parent;
889 int pollticks;
890
891 if (!PCMTRIG_COMMON(go))
892 return (0);
893
894 snd_mtxlock(via->lock);
895 switch(go) {
896 case PCMTRIG_START:
897 via_buildsgdt(ch);
898 via8233chan_mute(via, ch, 0);
899 via_wr(via, ch->rbase + VIA_RP_TABLE_PTR, ch->sgd_addr, 4);
900 if (via->polling != 0) {
901 ch->ptr = 0;
902 ch->prevptr = 0;
903 pollticks = ((uint64_t)hz * ch->blksz) /
904 ((uint64_t)sndbuf_getalign(ch->buffer) *
905 sndbuf_getspd(ch->buffer));
906 pollticks >>= 2;
907 if (pollticks > hz)
908 pollticks = hz;
909 if (pollticks < 1)
910 pollticks = 1;
911 if (via_chan_active(via) == 0 ||
912 pollticks < via->poll_ticks) {
913 if (bootverbose) {
914 if (via_chan_active(via) == 0)
915 kprintf("%s: pollticks=%d\n",
916 __func__, pollticks);
917 else
918 kprintf("%s: "
919 "pollticks %d -> %d\n",
920 __func__, via->poll_ticks,
921 pollticks);
922 }
923 via->poll_ticks = pollticks;
924 callout_reset(&via->poll_timer, 1,
925 via_poll_callback, via);
926 }
927 }
928 via_wr(via, ch->rbase + VIA_RP_CONTROL,
929 SGD_CONTROL_START | SGD_CONTROL_AUTOSTART |
930 ((via->polling == 0) ?
931 (SGD_CONTROL_I_EOL | SGD_CONTROL_I_FLAG) : 0), 1);
932 ch->active = 1;
933 break;
934 case PCMTRIG_STOP:
935 case PCMTRIG_ABORT:
936 via_wr(via, ch->rbase + VIA_RP_CONTROL, SGD_CONTROL_STOP, 1);
937 via8233chan_mute(via, ch, 1);
938 via8233chan_reset(via, ch);
939 ch->active = 0;
940 if (via->polling != 0) {
941 if (via_chan_active(via) == 0) {
942 callout_stop(&via->poll_timer);
943 via->poll_ticks = 1;
944 } else {
945 pollticks = via_poll_ticks(via);
946 if (pollticks > via->poll_ticks) {
947 if (bootverbose)
948 kprintf("%s: pollticks "
949 "%d -> %d\n",
950 __func__, via->poll_ticks,
951 pollticks);
952 via->poll_ticks = pollticks;
953 callout_reset(&via->poll_timer,
954 1, via_poll_callback,
955 via);
956 }
957 }
958 }
959 break;
960 default:
961 break;
962 }
963 snd_mtxunlock(via->lock);
964 return (0);
965 }
966
967 static kobj_method_t via8233wr_methods[] = {
968 KOBJMETHOD(channel_init, via8233wr_init),
969 KOBJMETHOD(channel_setformat, via8233wr_setformat),
970 KOBJMETHOD(channel_setspeed, via8233wr_setspeed),
971 KOBJMETHOD(channel_getcaps, via8233wr_getcaps),
972 KOBJMETHOD(channel_setblocksize, via8233chan_setblocksize),
973 KOBJMETHOD(channel_setfragments, via8233chan_setfragments),
974 KOBJMETHOD(channel_trigger, via8233chan_trigger),
975 KOBJMETHOD(channel_getptr, via8233chan_getptr),
976 KOBJMETHOD_END
977 };
978 CHANNEL_DECLARE(via8233wr);
979
980 static kobj_method_t via8233dxs_methods[] = {
981 KOBJMETHOD(channel_init, via8233dxs_init),
982 KOBJMETHOD(channel_setformat, via8233dxs_setformat),
983 KOBJMETHOD(channel_setspeed, via8233dxs_setspeed),
984 KOBJMETHOD(channel_getcaps, via8233dxs_getcaps),
985 KOBJMETHOD(channel_setblocksize, via8233chan_setblocksize),
986 KOBJMETHOD(channel_setfragments, via8233chan_setfragments),
987 KOBJMETHOD(channel_trigger, via8233chan_trigger),
988 KOBJMETHOD(channel_getptr, via8233chan_getptr),
989 KOBJMETHOD_END
990 };
991 CHANNEL_DECLARE(via8233dxs);
992
993 static kobj_method_t via8233msgd_methods[] = {
994 KOBJMETHOD(channel_init, via8233msgd_init),
995 KOBJMETHOD(channel_setformat, via8233msgd_setformat),
996 KOBJMETHOD(channel_setspeed, via8233msgd_setspeed),
997 KOBJMETHOD(channel_getcaps, via8233msgd_getcaps),
998 KOBJMETHOD(channel_setblocksize, via8233chan_setblocksize),
999 KOBJMETHOD(channel_setfragments, via8233chan_setfragments),
1000 KOBJMETHOD(channel_trigger, via8233chan_trigger),
1001 KOBJMETHOD(channel_getptr, via8233chan_getptr),
1002 KOBJMETHOD_END
1003 };
1004 CHANNEL_DECLARE(via8233msgd);
1005
1006 /* -------------------------------------------------------------------- */
1007
1008 static void
via_intr(void * p)1009 via_intr(void *p)
1010 {
1011 struct via_info *via = p;
1012 uint32_t ptrigger = 0, rtrigger = 0;
1013 int i, reg, stat;
1014
1015 snd_mtxlock(via->lock);
1016 if (via->polling != 0) {
1017 snd_mtxunlock(via->lock);
1018 return;
1019 }
1020 /* Poll playback channels */
1021 for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++) {
1022 if (via->pch[i].channel == NULL || via->pch[i].active == 0)
1023 continue;
1024 reg = via->pch[i].rbase + VIA_RP_STATUS;
1025 stat = via_rd(via, reg, 1);
1026 if (stat & SGD_STATUS_INTR) {
1027 if (via->dma_eol_wake && ((stat & SGD_STATUS_EOL) ||
1028 !(stat & SGD_STATUS_ACTIVE)))
1029 via_wr(via, via->pch[i].rbase + VIA_RP_CONTROL,
1030 SGD_CONTROL_START | SGD_CONTROL_AUTOSTART |
1031 SGD_CONTROL_I_EOL | SGD_CONTROL_I_FLAG, 1);
1032 via_wr(via, reg, stat, 1);
1033 ptrigger |= 1 << i;
1034 }
1035 }
1036 /* Poll record channels */
1037 for (i = 0; i < NWRCHANS; i++) {
1038 if (via->rch[i].channel == NULL || via->rch[i].active == 0)
1039 continue;
1040 reg = via->rch[i].rbase + VIA_RP_STATUS;
1041 stat = via_rd(via, reg, 1);
1042 if (stat & SGD_STATUS_INTR) {
1043 if (via->dma_eol_wake && ((stat & SGD_STATUS_EOL) ||
1044 !(stat & SGD_STATUS_ACTIVE)))
1045 via_wr(via, via->rch[i].rbase + VIA_RP_CONTROL,
1046 SGD_CONTROL_START | SGD_CONTROL_AUTOSTART |
1047 SGD_CONTROL_I_EOL | SGD_CONTROL_I_FLAG, 1);
1048 via_wr(via, reg, stat, 1);
1049 rtrigger |= 1 << i;
1050 }
1051 }
1052 snd_mtxunlock(via->lock);
1053
1054 for (i = 0; i < NDXSCHANS + NMSGDCHANS; i++) {
1055 if (ptrigger & (1 << i))
1056 chn_intr(via->pch[i].channel);
1057 }
1058 for (i = 0; i < NWRCHANS; i++) {
1059 if (rtrigger & (1 << i))
1060 chn_intr(via->rch[i].channel);
1061 }
1062 }
1063
1064 /*
1065 * Probe and attach the card
1066 */
1067 static int
via_probe(device_t dev)1068 via_probe(device_t dev)
1069 {
1070 switch(pci_get_devid(dev)) {
1071 case VIA8233_PCI_ID:
1072 switch(pci_get_revid(dev)) {
1073 case VIA8233_REV_ID_8233PRE:
1074 device_set_desc(dev, "VIA VT8233 (pre)");
1075 return (BUS_PROBE_DEFAULT);
1076 case VIA8233_REV_ID_8233C:
1077 device_set_desc(dev, "VIA VT8233C");
1078 return (BUS_PROBE_DEFAULT);
1079 case VIA8233_REV_ID_8233:
1080 device_set_desc(dev, "VIA VT8233");
1081 return (BUS_PROBE_DEFAULT);
1082 case VIA8233_REV_ID_8233A:
1083 device_set_desc(dev, "VIA VT8233A");
1084 return (BUS_PROBE_DEFAULT);
1085 case VIA8233_REV_ID_8235:
1086 device_set_desc(dev, "VIA VT8235");
1087 return (BUS_PROBE_DEFAULT);
1088 case VIA8233_REV_ID_8237:
1089 device_set_desc(dev, "VIA VT8237");
1090 return (BUS_PROBE_DEFAULT);
1091 case VIA8233_REV_ID_8251:
1092 device_set_desc(dev, "VIA VT8251");
1093 return (BUS_PROBE_DEFAULT);
1094 default:
1095 device_set_desc(dev, "VIA VT8233X"); /* Unknown */
1096 return (BUS_PROBE_DEFAULT);
1097 }
1098 }
1099 return (ENXIO);
1100 }
1101
1102 static void
dma_cb(void * p,bus_dma_segment_t * bds,int a,int b)1103 dma_cb(void *p, bus_dma_segment_t *bds, int a, int b)
1104 {
1105 struct via_info *via = (struct via_info *)p;
1106 via->sgd_addr = bds->ds_addr;
1107 }
1108
1109 static int
via_chip_init(device_t dev)1110 via_chip_init(device_t dev)
1111 {
1112 uint32_t data, cnt;
1113
1114 /* Wake up and reset AC97 if necessary */
1115 data = pci_read_config(dev, VIA_PCI_ACLINK_STAT, 1);
1116
1117 if ((data & VIA_PCI_ACLINK_C00_READY) == 0) {
1118 /* Cold reset per ac97r2.3 spec (page 95) */
1119 /* Assert low */
1120 pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
1121 VIA_PCI_ACLINK_EN, 1);
1122 /* Wait T_rst_low */
1123 DELAY(100);
1124 /* Assert high */
1125 pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
1126 VIA_PCI_ACLINK_EN | VIA_PCI_ACLINK_NRST, 1);
1127 /* Wait T_rst2clk */
1128 DELAY(5);
1129 /* Assert low */
1130 pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
1131 VIA_PCI_ACLINK_EN, 1);
1132 } else {
1133 /* Warm reset */
1134 /* Force no sync */
1135 pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
1136 VIA_PCI_ACLINK_EN, 1);
1137 DELAY(100);
1138 /* Sync */
1139 pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
1140 VIA_PCI_ACLINK_EN | VIA_PCI_ACLINK_SYNC, 1);
1141 /* Wait T_sync_high */
1142 DELAY(5);
1143 /* Force no sync */
1144 pci_write_config(dev, VIA_PCI_ACLINK_CTRL,
1145 VIA_PCI_ACLINK_EN, 1);
1146 /* Wait T_sync2clk */
1147 DELAY(5);
1148 }
1149
1150 /* Power everything up */
1151 pci_write_config(dev, VIA_PCI_ACLINK_CTRL, VIA_PCI_ACLINK_DESIRED, 1);
1152
1153 /* Wait for codec to become ready (largest reported delay 310ms) */
1154 for (cnt = 0; cnt < 2000; cnt++) {
1155 data = pci_read_config(dev, VIA_PCI_ACLINK_STAT, 1);
1156 if (data & VIA_PCI_ACLINK_C00_READY)
1157 return (0);
1158 DELAY(5000);
1159 }
1160 device_printf(dev, "primary codec not ready (cnt = 0x%02x)\n", cnt);
1161 return (ENXIO);
1162 }
1163
1164 static int
via_attach(device_t dev)1165 via_attach(device_t dev)
1166 {
1167 struct via_info *via = 0;
1168 char status[SND_STATUSLEN];
1169 int i, via_dxs_disabled, via_dxs_src, via_dxs_chnum, via_sgd_chnum;
1170 int nsegs;
1171 uint32_t revid;
1172
1173 via = kmalloc(sizeof *via, M_DEVBUF, M_WAITOK | M_ZERO);
1174 via->lock = snd_mtxcreate(device_get_nameunit(dev),
1175 "snd_via8233 softc");
1176 via->dev = dev;
1177
1178 callout_init_mp(&via->poll_timer);
1179 via->poll_ticks = 1;
1180
1181 if (resource_int_value(device_get_name(dev),
1182 device_get_unit(dev), "polling", &i) == 0 && i != 0)
1183 via->polling = 1;
1184 else
1185 via->polling = 0;
1186
1187 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
1188 pci_enable_busmaster(dev);
1189
1190 via->regid = PCIR_BAR(0);
1191 via->reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &via->regid,
1192 RF_ACTIVE);
1193 if (!via->reg) {
1194 device_printf(dev, "cannot allocate bus resource.");
1195 goto bad;
1196 }
1197 via->st = rman_get_bustag(via->reg);
1198 via->sh = rman_get_bushandle(via->reg);
1199
1200 via->irqid = 0;
1201 via->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &via->irqid,
1202 RF_ACTIVE | RF_SHAREABLE);
1203 if (!via->irq ||
1204 snd_setup_intr(dev, via->irq, INTR_MPSAFE,
1205 via_intr, via, &via->ih)) {
1206 device_printf(dev, "unable to map interrupt\n");
1207 goto bad;
1208 }
1209
1210 via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536);
1211 if (resource_int_value(device_get_name(dev),
1212 device_get_unit(dev), "blocksize", &i) == 0 && i > 0) {
1213 i &= VIA_BLK_ALIGN;
1214 if (i < VIA_BLK_MIN)
1215 i = VIA_BLK_MIN;
1216 via->blkcnt = via->bufsz / i;
1217 i = 0;
1218 while (via->blkcnt >> i)
1219 i++;
1220 via->blkcnt = 1 << (i - 1);
1221 if (via->blkcnt < VIA_SEGS_MIN)
1222 via->blkcnt = VIA_SEGS_MIN;
1223 else if (via->blkcnt > VIA_SEGS_MAX)
1224 via->blkcnt = VIA_SEGS_MAX;
1225
1226 } else
1227 via->blkcnt = VIA_SEGS_DEFAULT;
1228
1229 revid = pci_get_revid(dev);
1230
1231 /*
1232 * VIA8251 lost its interrupt after DMA EOL, and need
1233 * a gentle spank on its face within interrupt handler.
1234 */
1235 if (revid == VIA8233_REV_ID_8251)
1236 via->dma_eol_wake = 1;
1237 else
1238 via->dma_eol_wake = 0;
1239
1240 /*
1241 * Decide whether DXS had to be disabled or not
1242 */
1243 if (revid == VIA8233_REV_ID_8233A) {
1244 /*
1245 * DXS channel is disabled. Reports from multiple users
1246 * that it plays at half-speed. Do not see this behaviour
1247 * on available 8233C or when emulating 8233A register set
1248 * on 8233C (either with or without ac97 VRA).
1249 */
1250 via_dxs_disabled = 1;
1251 } else if (resource_int_value(device_get_name(dev),
1252 device_get_unit(dev), "via_dxs_disabled",
1253 &via_dxs_disabled) == 0)
1254 via_dxs_disabled = (via_dxs_disabled > 0) ? 1 : 0;
1255 else
1256 via_dxs_disabled = 0;
1257
1258 if (via_dxs_disabled) {
1259 via_dxs_chnum = 0;
1260 via_sgd_chnum = 1;
1261 } else {
1262 if (resource_int_value(device_get_name(dev),
1263 device_get_unit(dev), "via_dxs_channels",
1264 &via_dxs_chnum) != 0)
1265 via_dxs_chnum = NDXSCHANS;
1266 if (resource_int_value(device_get_name(dev),
1267 device_get_unit(dev), "via_sgd_channels",
1268 &via_sgd_chnum) != 0)
1269 via_sgd_chnum = NMSGDCHANS;
1270 }
1271 if (via_dxs_chnum > NDXSCHANS)
1272 via_dxs_chnum = NDXSCHANS;
1273 else if (via_dxs_chnum < 0)
1274 via_dxs_chnum = 0;
1275 if (via_sgd_chnum > NMSGDCHANS)
1276 via_sgd_chnum = NMSGDCHANS;
1277 else if (via_sgd_chnum < 0)
1278 via_sgd_chnum = 0;
1279 if (via_dxs_chnum + via_sgd_chnum < 1) {
1280 /* Minimalist ? */
1281 via_dxs_chnum = 1;
1282 via_sgd_chnum = 0;
1283 }
1284 if (via_dxs_chnum > 0 && resource_int_value(device_get_name(dev),
1285 device_get_unit(dev), "via_dxs_src", &via_dxs_src) == 0)
1286 via->dxs_src = (via_dxs_src > 0) ? 1 : 0;
1287 else
1288 via->dxs_src = 0;
1289
1290 nsegs = (via_dxs_chnum + via_sgd_chnum + NWRCHANS) * VIA_SEGS_MAX;
1291
1292 /* DMA tag for buffers */
1293 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
1294 /*boundary*/0,
1295 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
1296 /*highaddr*/BUS_SPACE_MAXADDR,
1297 /*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff,
1298 /*flags*/0,
1299 &via->parent_dmat) != 0) {
1300 device_printf(dev, "unable to create dma tag\n");
1301 goto bad;
1302 }
1303
1304 /*
1305 * DMA tag for SGD table. The 686 uses scatter/gather DMA and
1306 * requires a list in memory of work to do. We need only 16 bytes
1307 * for this list, and it is wasteful to allocate 16K.
1308 */
1309 if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
1310 /*boundary*/0,
1311 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
1312 /*highaddr*/BUS_SPACE_MAXADDR,
1313 /*maxsize*/nsegs * sizeof(struct via_dma_op),
1314 /*nsegments*/1, /*maxsegz*/0x3ffff,
1315 /*flags*/0,
1316 &via->sgd_dmat) != 0) {
1317 device_printf(dev, "unable to create dma tag\n");
1318 goto bad;
1319 }
1320
1321 if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table,
1322 BUS_DMA_NOWAIT, &via->sgd_dmamap) == -1)
1323 goto bad;
1324 if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table,
1325 nsegs * sizeof(struct via_dma_op), dma_cb, via, 0))
1326 goto bad;
1327
1328 if (via_chip_init(dev))
1329 goto bad;
1330
1331 via->codec = AC97_CREATE(dev, via, via_ac97);
1332 if (!via->codec)
1333 goto bad;
1334
1335 mixer_init(dev, ac97_getmixerclass(), via->codec);
1336
1337 via->codec_caps = ac97_getextcaps(via->codec);
1338
1339 /* Try to set VRA without generating an error, VRM not reqrd yet */
1340 if (via->codec_caps &
1341 (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM | AC97_EXTCAP_DRA)) {
1342 uint16_t ext = ac97_getextmode(via->codec);
1343 ext |= (via->codec_caps &
1344 (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM));
1345 ext &= ~AC97_EXTCAP_DRA;
1346 ac97_setextmode(via->codec, ext);
1347 }
1348
1349 ksnprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld %s",
1350 rman_get_start(via->reg), rman_get_start(via->irq),
1351 PCM_KLDSTRING(snd_via8233));
1352
1353 /* Register */
1354 if (pcm_register(dev, via, via_dxs_chnum + via_sgd_chnum, NWRCHANS))
1355 goto bad;
1356 for (i = 0; i < via_dxs_chnum; i++)
1357 pcm_addchan(dev, PCMDIR_PLAY, &via8233dxs_class, via);
1358 for (i = 0; i < via_sgd_chnum; i++)
1359 pcm_addchan(dev, PCMDIR_PLAY, &via8233msgd_class, via);
1360 for (i = 0; i < NWRCHANS; i++)
1361 pcm_addchan(dev, PCMDIR_REC, &via8233wr_class, via);
1362 if (via_dxs_chnum > 0)
1363 via_init_sysctls(dev);
1364 device_printf(dev, "<VIA DXS %sabled: DXS%s %d / SGD %d / REC %d>\n",
1365 (via_dxs_chnum > 0) ? "En" : "Dis", (via->dxs_src) ? "(SRC)" : "",
1366 via_dxs_chnum, via_sgd_chnum, NWRCHANS);
1367
1368 pcm_setstatus(dev, status);
1369
1370 return (0);
1371 bad:
1372 if (via->codec)
1373 ac97_destroy(via->codec);
1374 if (via->reg)
1375 bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg);
1376 if (via->ih)
1377 bus_teardown_intr(dev, via->irq, via->ih);
1378 if (via->irq)
1379 bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq);
1380 if (via->parent_dmat)
1381 bus_dma_tag_destroy(via->parent_dmat);
1382 if (via->sgd_addr)
1383 bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap);
1384 if (via->sgd_table)
1385 bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap);
1386 if (via->sgd_dmat)
1387 bus_dma_tag_destroy(via->sgd_dmat);
1388 if (via->lock)
1389 snd_mtxfree(via->lock);
1390 if (via)
1391 kfree(via, M_DEVBUF);
1392 return (ENXIO);
1393 }
1394
1395 static int
via_detach(device_t dev)1396 via_detach(device_t dev)
1397 {
1398 int r;
1399 struct via_info *via;
1400
1401 r = pcm_unregister(dev);
1402 if (r)
1403 return (r);
1404
1405 via = pcm_getdevinfo(dev);
1406
1407 if (via != NULL && (via->play_num != 0 || via->rec_num != 0)) {
1408 snd_mtxlock(via->lock);
1409 via->polling = 0;
1410 callout_stop(&via->poll_timer);
1411 snd_mtxunlock(via->lock);
1412 callout_drain(&via->poll_timer);
1413 }
1414
1415 bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg);
1416 bus_teardown_intr(dev, via->irq, via->ih);
1417 bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq);
1418 bus_dma_tag_destroy(via->parent_dmat);
1419 bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap);
1420 bus_dmamem_free(via->sgd_dmat, via->sgd_table, via->sgd_dmamap);
1421 bus_dma_tag_destroy(via->sgd_dmat);
1422 snd_mtxfree(via->lock);
1423 kfree(via, M_DEVBUF);
1424 return (0);
1425 }
1426
1427
1428 static device_method_t via_methods[] = {
1429 DEVMETHOD(device_probe, via_probe),
1430 DEVMETHOD(device_attach, via_attach),
1431 DEVMETHOD(device_detach, via_detach),
1432 { 0, 0}
1433 };
1434
1435 static driver_t via_driver = {
1436 "pcm",
1437 via_methods,
1438 PCM_SOFTC_SIZE,
1439 };
1440
1441 DRIVER_MODULE(snd_via8233, pci, via_driver, pcm_devclass, NULL, NULL);
1442 MODULE_DEPEND(snd_via8233, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
1443 MODULE_VERSION(snd_via8233, 1);
1444