2 * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/dev/sound/pcm/dsp.c,v 1.15.2.13 2002/08/30 13:53:03 orion Exp $
27 * $DragonFly: src/sys/dev/sound/pcm/dsp.c,v 1.8 2005/06/10 23:07:01 dillon Exp $
30 #include <sys/param.h>
31 #include <sys/queue.h>
33 #include <dev/sound/pcm/sound.h>
35 SND_DECLARE_FILE("$DragonFly: src/sys/dev/sound/pcm/dsp.c,v 1.8 2005/06/10 23:07:01 dillon Exp $");
39 static d_open_t dsp_open;
40 static d_close_t dsp_close;
41 static d_read_t dsp_read;
42 static d_write_t dsp_write;
43 static d_ioctl_t dsp_ioctl;
44 static d_poll_t dsp_poll;
45 static d_mmap_t dsp_mmap;
47 static struct cdevsw dsp_cdevsw = {
49 /* maj */ SND_CDEV_MAJOR,
55 /* close */ dsp_close,
57 /* write */ dsp_write,
58 /* ioctl */ dsp_ioctl,
61 /* strategy */ nostrategy,
67 static eventhandler_tag dsp_ehtag;
70 static struct snddev_info *
71 dsp_get_info(dev_t dev)
73 struct snddev_info *d;
77 if (unit >= devclass_get_maxunit(pcm_devclass))
79 d = devclass_get_softc(pcm_devclass, unit);
85 dsp_get_flags(dev_t dev)
91 if (unit >= devclass_get_maxunit(pcm_devclass))
93 bdev = devclass_get_device(pcm_devclass, unit);
95 return pcm_getflags(bdev);
99 dsp_set_flags(dev_t dev, u_int32_t flags)
105 if (unit >= devclass_get_maxunit(pcm_devclass))
107 bdev = devclass_get_device(pcm_devclass, unit);
109 pcm_setflags(bdev, flags);
113 * return the channels channels associated with an open device instance.
114 * set the priority if the device is simplex and one direction (only) is
116 * lock channels specified.
119 getchns(dev_t dev, struct pcm_channel **rdch, struct pcm_channel **wrch, u_int32_t prio)
121 struct snddev_info *d;
124 flags = dsp_get_flags(dev);
125 d = dsp_get_info(dev);
128 KASSERT((flags & SD_F_PRIO_SET) != SD_F_PRIO_SET, \
129 ("getchns: read and write both prioritised"));
131 if ((flags & SD_F_PRIO_SET) == 0 && (prio != (SD_F_PRIO_RD | SD_F_PRIO_WR))) {
132 flags |= prio & (SD_F_PRIO_RD | SD_F_PRIO_WR);
133 dsp_set_flags(dev, flags);
136 *rdch = dev->si_drv1;
137 *wrch = dev->si_drv2;
138 if ((flags & SD_F_SIMPLEX) && (flags & SD_F_PRIO_SET)) {
140 if (*rdch && flags & SD_F_PRIO_WR) {
142 *rdch = pcm_getfakechan(d);
143 } else if (*wrch && flags & SD_F_PRIO_RD) {
145 *wrch = pcm_getfakechan(d);
149 pcm_getfakechan(d)->flags |= CHN_F_BUSY;
153 if (*rdch && *rdch != pcm_getfakechan(d) && (prio & SD_F_PRIO_RD))
155 if (*wrch && *wrch != pcm_getfakechan(d) && (prio & SD_F_PRIO_WR))
161 /* unlock specified channels */
163 relchns(dev_t dev, struct pcm_channel *rdch, struct pcm_channel *wrch, u_int32_t prio)
165 struct snddev_info *d;
167 d = dsp_get_info(dev);
168 if (wrch && wrch != pcm_getfakechan(d) && (prio & SD_F_PRIO_WR))
170 if (rdch && rdch != pcm_getfakechan(d) && (prio & SD_F_PRIO_RD))
178 dsp_open(dev_t i_dev, int flags, int mode, struct thread *td)
180 struct pcm_channel *rdch, *wrch;
181 struct snddev_info *d;
184 struct proc *p = td->td_proc;
189 d = dsp_get_info(i_dev);
190 devtype = PCMDEV(i_dev);
192 /* decide default format */
206 case SND_DEV_NORESET:
219 panic("impossible devtype %d", devtype);
222 /* lock snddev so nobody else can monkey with it */
225 rdch = i_dev->si_drv1;
226 wrch = i_dev->si_drv2;
228 if ((dsp_get_flags(i_dev) & SD_F_SIMPLEX) && (rdch || wrch)) {
229 /* simplex device, already open, exit */
235 if (((flags & FREAD) && rdch) || ((flags & FWRITE) && wrch)) {
236 /* device already open in one or both directions */
242 /* if we get here, the open request is valid */
245 if (devtype == SND_DEV_DSPREC)
246 rdch = pcm_chnalloc(d, PCMDIR_REC, p->p_pid, PCMCHAN(i_dev));
248 rdch = pcm_chnalloc(d, PCMDIR_REC, p->p_pid, -1);
250 /* no channel available, exit */
255 /* got a channel, already locked for us */
258 if (flags & FWRITE) {
260 wrch = pcm_chnalloc(d, PCMDIR_PLAY, p->p_pid, -1);
262 /* no channel available */
263 if (rdch && (flags & FREAD)) {
264 /* just opened a read channel, release it */
265 pcm_chnrelease(rdch);
272 /* got a channel, already locked for us */
275 i_dev->si_drv1 = rdch;
276 i_dev->si_drv2 = wrch;
278 /* finished with snddev, new channels still locked */
280 /* bump refcounts, reset and unlock any channels that we just opened */
282 if (chn_reset(rdch, fmt)) {
284 pcm_chnrelease(rdch);
285 if (wrch && (flags & FWRITE))
286 pcm_chnrelease(wrch);
291 if (flags & O_NONBLOCK)
292 rdch->flags |= CHN_F_NBIO;
296 if (flags & FWRITE) {
297 if (chn_reset(wrch, fmt)) {
299 pcm_chnrelease(wrch);
302 pcm_chnref(rdch, -1);
303 pcm_chnrelease(rdch);
310 if (flags & O_NONBLOCK)
311 wrch->flags |= CHN_F_NBIO;
320 dsp_close(dev_t i_dev, int flags, int mode, struct thread *td)
322 struct pcm_channel *rdch, *wrch;
323 struct snddev_info *d;
327 d = dsp_get_info(i_dev);
329 rdch = i_dev->si_drv1;
330 wrch = i_dev->si_drv2;
334 /* decrement refcount for each channel, exit if nonzero */
337 if (pcm_chnref(rdch, -1) > 0) {
344 if (pcm_chnref(wrch, -1) > 0) {
355 /* both refcounts are zero, abort and release */
357 if (pcm_getfakechan(d))
358 pcm_getfakechan(d)->flags = 0;
360 i_dev->si_drv1 = NULL;
361 i_dev->si_drv2 = NULL;
363 dsp_set_flags(i_dev, dsp_get_flags(i_dev) & ~SD_F_TRANSIENT);
367 chn_abort(rdch); /* won't sleep */
368 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MAPPED | CHN_F_DEAD);
370 pcm_chnrelease(rdch);
373 chn_flush(wrch); /* may sleep */
374 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MAPPED | CHN_F_DEAD);
376 pcm_chnrelease(wrch);
384 dsp_read(dev_t i_dev, struct uio *buf, int flag)
386 struct pcm_channel *rdch, *wrch;
390 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD);
392 KASSERT(rdch, ("dsp_read: nonexistant channel"));
393 KASSERT(rdch->flags & CHN_F_BUSY, ("dsp_read: nonbusy channel"));
395 if (rdch->flags & (CHN_F_MAPPED | CHN_F_DEAD)) {
396 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD);
400 if (!(rdch->flags & CHN_F_RUNNING))
401 rdch->flags |= CHN_F_RUNNING;
402 ret = chn_read(rdch, buf);
403 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD);
410 dsp_write(dev_t i_dev, struct uio *buf, int flag)
412 struct pcm_channel *rdch, *wrch;
416 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_WR);
418 KASSERT(wrch, ("dsp_write: nonexistant channel"));
419 KASSERT(wrch->flags & CHN_F_BUSY, ("dsp_write: nonbusy channel"));
421 if (wrch->flags & (CHN_F_MAPPED | CHN_F_DEAD)) {
422 relchns(i_dev, rdch, wrch, SD_F_PRIO_WR);
426 if (!(wrch->flags & CHN_F_RUNNING))
427 wrch->flags |= CHN_F_RUNNING;
428 ret = chn_write(wrch, buf);
429 relchns(i_dev, rdch, wrch, SD_F_PRIO_WR);
436 dsp_ioctl(dev_t i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td)
438 struct pcm_channel *wrch, *rdch;
439 struct snddev_info *d;
441 int ret = 0, *arg_i = (int *)arg, tmp;
444 * this is an evil hack to allow broken apps to perform mixer ioctls
448 if (IOCGROUP(cmd) == 'M') {
451 pdev = make_adhoc_dev(&dsp_cdevsw,
452 PCMMKMINOR(PCMUNIT(i_dev), SND_DEV_CTL, 0));
453 return mixer_ioctl(pdev, cmd, arg, mode, td);
457 d = dsp_get_info(i_dev);
458 getchns(i_dev, &rdch, &wrch, 0);
461 if (wrch && (wrch->flags & CHN_F_DEAD))
463 if (rdch && (rdch->flags & CHN_F_DEAD))
466 relchns(i_dev, rdch, wrch, 0);
478 * we start with the new ioctl interface.
480 case AIONWRITE: /* how many bytes can write ? */
482 if (wrch && wrch->bufhard.dl)
483 while (chn_wrfeed(wrch) == 0);
485 *arg_i = wrch? sndbuf_getfree(wrch->bufsoft) : 0;
488 case AIOSSIZE: /* set the current blocksize */
490 struct snd_size *p = (struct snd_size *)arg;
496 chn_setblocksize(wrch, 2, p->play_size);
497 p->play_size = sndbuf_getblksz(wrch->bufsoft);
502 chn_setblocksize(rdch, 2, p->rec_size);
503 p->rec_size = sndbuf_getblksz(rdch->bufsoft);
508 case AIOGSIZE: /* get the current blocksize */
510 struct snd_size *p = (struct snd_size *)arg;
513 p->play_size = sndbuf_getblksz(wrch->bufsoft);
515 p->rec_size = sndbuf_getblksz(rdch->bufsoft);
521 snd_chan_param *p = (snd_chan_param *)arg;
525 chn_setformat(wrch, p->play_format);
526 chn_setspeed(wrch, p->play_rate);
531 chn_setformat(rdch, p->rec_format);
532 chn_setspeed(rdch, p->rec_rate);
540 snd_chan_param *p = (snd_chan_param *)arg;
542 p->play_rate = wrch? wrch->speed : 0;
543 p->rec_rate = rdch? rdch->speed : 0;
544 p->play_format = wrch? wrch->format : 0;
545 p->rec_format = rdch? rdch->format : 0;
549 case AIOGCAP: /* get capabilities */
551 snd_capabilities *p = (snd_capabilities *)arg;
552 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL;
557 rcaps = chn_getcaps(rdch);
561 pcaps = chn_getcaps(wrch);
563 p->rate_min = max(rcaps? rcaps->minspeed : 0,
564 pcaps? pcaps->minspeed : 0);
565 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000,
566 pcaps? pcaps->maxspeed : 1000000);
567 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000,
568 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000);
569 /* XXX bad on sb16 */
570 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) &
571 (wrch? chn_getformats(wrch) : 0xffffffff);
573 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX;
574 pdev = make_adhoc_dev(&dsp_cdevsw, PCMMKMINOR(PCMUNIT(i_dev), SND_DEV_CTL, 0));
575 p->mixers = 1; /* default: one mixer */
576 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0;
577 p->left = p->right = 100;
586 if (*arg_i == AIOSYNC_PLAY && wrch)
587 *arg_i = chn_abort(wrch);
588 else if (*arg_i == AIOSYNC_CAPTURE && rdch)
589 *arg_i = chn_abort(rdch);
591 printf("AIOSTOP: bad channel 0x%x\n", *arg_i);
597 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n",
598 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos);
602 * here follow the standard ioctls (filio.h etc.)
604 case FIONREAD: /* get # bytes to read */
605 /* if (rdch && rdch->bufhard.dl)
606 while (chn_rdfeed(rdch) == 0);
607 */ *arg_i = rdch? sndbuf_getready(rdch->bufsoft) : 0;
610 case FIOASYNC: /*set/clear async i/o */
611 DEB( printf("FIOASYNC\n") ; )
614 case SNDCTL_DSP_NONBLOCK:
615 case FIONBIO: /* set/clear non-blocking i/o */
617 rdch->flags &= ~CHN_F_NBIO;
619 wrch->flags &= ~CHN_F_NBIO;
622 rdch->flags |= CHN_F_NBIO;
624 wrch->flags |= CHN_F_NBIO;
629 * Finally, here is the linux-compatible ioctl interface
631 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int)
632 case THE_REAL_SNDCTL_DSP_GETBLKSIZE:
633 case SNDCTL_DSP_GETBLKSIZE:
635 *arg_i = sndbuf_getblksz(wrch->bufsoft);
637 *arg_i = sndbuf_getblksz(rdch->bufsoft);
642 case SNDCTL_DSP_SETBLKSIZE:
643 RANGE(*arg_i, 16, 65536);
646 chn_setblocksize(wrch, 2, *arg_i);
651 chn_setblocksize(rdch, 2, *arg_i);
656 case SNDCTL_DSP_RESET:
657 DEB(printf("dsp reset\n"));
664 case SNDCTL_DSP_SYNC:
665 DEB(printf("dsp sync\n"));
666 /* chn_sync may sleep */
669 chn_sync(wrch, sndbuf_getsize(wrch->bufsoft) - 4);
674 case SNDCTL_DSP_SPEED:
675 /* chn_setspeed may sleep */
679 ret = chn_setspeed(wrch, *arg_i);
683 if (rdch && ret == 0) {
685 ret = chn_setspeed(rdch, *arg_i);
693 case SOUND_PCM_READ_RATE:
694 *arg_i = wrch? wrch->speed : rdch->speed;
697 case SNDCTL_DSP_STEREO:
699 *arg_i = (*arg_i)? AFMT_STEREO : 0;
702 ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | *arg_i);
703 tmp = (wrch->format & AFMT_STEREO)? 1 : 0;
706 if (rdch && ret == 0) {
708 ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | *arg_i);
710 tmp = (rdch->format & AFMT_STEREO)? 1 : 0;
716 case SOUND_PCM_WRITE_CHANNELS:
717 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */
720 *arg_i = (*arg_i != 1)? AFMT_STEREO : 0;
723 ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | *arg_i);
724 tmp = (wrch->format & AFMT_STEREO)? 2 : 1;
727 if (rdch && ret == 0) {
729 ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | *arg_i);
731 tmp = (rdch->format & AFMT_STEREO)? 2 : 1;
736 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 2 : 1;
740 case SOUND_PCM_READ_CHANNELS:
741 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 2 : 1;
744 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */
745 *arg_i = wrch? chn_getformats(wrch) : chn_getformats(rdch);
748 case SNDCTL_DSP_SETFMT: /* sets _one_ format */
750 if ((*arg_i != AFMT_QUERY)) {
754 ret = chn_setformat(wrch, (*arg_i) | (wrch->format & AFMT_STEREO));
755 tmp = wrch->format & ~AFMT_STEREO;
758 if (rdch && ret == 0) {
760 ret = chn_setformat(rdch, (*arg_i) | (rdch->format & AFMT_STEREO));
762 tmp = rdch->format & ~AFMT_STEREO;
767 *arg_i = (wrch? wrch->format : rdch->format) & ~AFMT_STEREO;
770 case SNDCTL_DSP_SETFRAGMENT:
772 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg));
774 u_int32_t fragln = (*arg_i) & 0x0000ffff;
775 u_int32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16;
778 RANGE(fragln, 4, 16);
779 fragsz = 1 << fragln;
782 maxfrags = CHN_2NDBUFMAXSIZE / fragsz;
787 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE)
788 maxfrags = CHN_2NDBUFMAXSIZE / fragsz;
790 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz));
793 ret = chn_setblocksize(rdch, maxfrags, fragsz);
794 maxfrags = sndbuf_getblkcnt(rdch->bufsoft);
795 fragsz = sndbuf_getblksz(rdch->bufsoft);
798 if (wrch && ret == 0) {
800 ret = chn_setblocksize(wrch, maxfrags, fragsz);
801 maxfrags = sndbuf_getblkcnt(wrch->bufsoft);
802 fragsz = sndbuf_getblksz(wrch->bufsoft);
811 *arg_i = (maxfrags << 16) | fragln;
815 case SNDCTL_DSP_GETISPACE:
816 /* return the size of data available in the input queue */
818 audio_buf_info *a = (audio_buf_info *)arg;
820 struct snd_dbuf *bs = rdch->bufsoft;
823 a->bytes = sndbuf_getready(bs);
824 a->fragments = a->bytes / sndbuf_getblksz(bs);
825 a->fragstotal = sndbuf_getblkcnt(bs);
826 a->fragsize = sndbuf_getblksz(bs);
832 case SNDCTL_DSP_GETOSPACE:
833 /* return space available in the output queue */
835 audio_buf_info *a = (audio_buf_info *)arg;
837 struct snd_dbuf *bs = wrch->bufsoft;
841 a->bytes = sndbuf_getfree(bs);
842 a->fragments = a->bytes / sndbuf_getblksz(bs);
843 a->fragstotal = sndbuf_getblkcnt(bs);
844 a->fragsize = sndbuf_getblksz(bs);
850 case SNDCTL_DSP_GETIPTR:
852 count_info *a = (count_info *)arg;
854 struct snd_dbuf *bs = rdch->bufsoft;
858 a->bytes = sndbuf_gettotal(bs);
859 a->blocks = sndbuf_getblocks(bs) - rdch->blocks;
860 a->ptr = sndbuf_getreadyptr(bs);
861 rdch->blocks = sndbuf_getblocks(bs);
868 case SNDCTL_DSP_GETOPTR:
870 count_info *a = (count_info *)arg;
872 struct snd_dbuf *bs = wrch->bufsoft;
876 a->bytes = sndbuf_gettotal(bs);
877 a->blocks = sndbuf_getblocks(bs) - wrch->blocks;
878 a->ptr = sndbuf_getreadyptr(bs);
879 wrch->blocks = sndbuf_getblocks(bs);
886 case SNDCTL_DSP_GETCAPS:
887 *arg_i = DSP_CAP_REALTIME | DSP_CAP_MMAP | DSP_CAP_TRIGGER;
888 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX))
889 *arg_i |= DSP_CAP_DUPLEX;
892 case SOUND_PCM_READ_BITS:
893 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_16BIT)? 16 : 8;
896 case SNDCTL_DSP_SETTRIGGER:
899 rdch->flags &= ~(CHN_F_TRIGGERED | CHN_F_NOTRIGGER);
900 if (*arg_i & PCM_ENABLE_INPUT)
903 rdch->flags |= CHN_F_NOTRIGGER;
908 wrch->flags &= ~(CHN_F_TRIGGERED | CHN_F_NOTRIGGER);
909 if (*arg_i & PCM_ENABLE_OUTPUT)
912 wrch->flags |= CHN_F_NOTRIGGER;
917 case SNDCTL_DSP_GETTRIGGER:
919 if (wrch && wrch->flags & CHN_F_TRIGGERED)
920 *arg_i |= PCM_ENABLE_OUTPUT;
921 if (rdch && rdch->flags & CHN_F_TRIGGERED)
922 *arg_i |= PCM_ENABLE_INPUT;
925 case SNDCTL_DSP_GETODELAY:
927 struct snd_dbuf *b = wrch->bufhard;
928 struct snd_dbuf *bs = wrch->bufsoft;
932 *arg_i = sndbuf_getready(b) + sndbuf_getready(bs);
938 case SNDCTL_DSP_POST:
941 wrch->flags &= ~CHN_F_NOTRIGGER;
947 case SNDCTL_DSP_MAPINBUF:
948 case SNDCTL_DSP_MAPOUTBUF:
949 case SNDCTL_DSP_SETSYNCRO:
952 case SNDCTL_DSP_SUBDIVIDE:
953 case SOUND_PCM_WRITE_FILTER:
954 case SOUND_PCM_READ_FILTER:
955 /* dunno what these do, don't sound important */
957 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd));
961 relchns(i_dev, rdch, wrch, 0);
967 dsp_poll(dev_t i_dev, int events, struct thread *td)
969 struct pcm_channel *wrch = NULL, *rdch = NULL;
974 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
977 e = (events & (POLLOUT | POLLWRNORM));
979 ret |= chn_poll(wrch, e, td->td_proc);
982 e = (events & (POLLIN | POLLRDNORM));
984 ret |= chn_poll(rdch, e, td->td_proc);
986 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
993 dsp_mmap(dev_t i_dev, vm_offset_t offset, int nprot)
995 struct pcm_channel *wrch = NULL, *rdch = NULL, *c;
998 if (nprot & PROT_EXEC)
1002 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
1005 * XXX the linux api uses the nprot to select read/write buffer
1006 * our vm system doesn't allow this, so force write buffer
1009 if (wrch && (nprot & PROT_WRITE)) {
1011 } else if (rdch && (nprot & PROT_READ)) {
1022 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
1027 if (offset >= sndbuf_getsize(c->bufsoft)) {
1028 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
1033 if (!(c->flags & CHN_F_MAPPED))
1034 c->flags |= CHN_F_MAPPED;
1036 ret = atop(vtophys(sndbuf_getbufofs(c->bufsoft, offset)));
1037 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
1044 dsp_register(int unit, int channel)
1046 cdevsw_add(&dsp_cdevsw,
1047 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_DSP, 0));
1048 cdevsw_add(&dsp_cdevsw,
1049 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_DSP16, 0));
1050 cdevsw_add(&dsp_cdevsw,
1051 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_AUDIO, 0));
1052 cdevsw_add(&dsp_cdevsw,
1053 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_NORESET, 0));
1054 make_dev(&dsp_cdevsw, PCMMKMINOR(unit, SND_DEV_DSP, channel),
1055 UID_ROOT, GID_WHEEL, 0666, "dsp%d.%d", unit, channel);
1056 make_dev(&dsp_cdevsw, PCMMKMINOR(unit, SND_DEV_DSP16, channel),
1057 UID_ROOT, GID_WHEEL, 0666, "dspW%d.%d", unit, channel);
1058 make_dev(&dsp_cdevsw, PCMMKMINOR(unit, SND_DEV_AUDIO, channel),
1059 UID_ROOT, GID_WHEEL, 0666, "audio%d.%d", unit, channel);
1065 dsp_registerrec(int unit, int channel)
1067 cdevsw_add(&dsp_cdevsw,
1068 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_DSPREC, 0));
1069 make_dev(&dsp_cdevsw, PCMMKMINOR(unit, SND_DEV_DSPREC, channel),
1070 UID_ROOT, GID_WHEEL, 0666, "dspr%d.%d", unit, channel);
1076 dsp_unregister(int unit, int channel)
1078 cdevsw_remove(&dsp_cdevsw,
1079 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_DSP, 0));
1080 cdevsw_remove(&dsp_cdevsw,
1081 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_DSP16, 0));
1082 cdevsw_remove(&dsp_cdevsw,
1083 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_AUDIO, 0));
1084 cdevsw_remove(&dsp_cdevsw,
1085 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_NORESET, 0));
1090 dsp_unregisterrec(int unit, int channel)
1092 cdevsw_remove(&dsp_cdevsw,
1093 PCMMKMINOR(-1, -1, 0), PCMMKMINOR(unit, SND_DEV_DSPREC, 0));
1099 dsp_clone(void *arg, char *name, int namelen, dev_t *dev)
1102 int i, cont, unit, devtype;
1103 int devtypes[3] = {SND_DEV_DSP, SND_DEV_DSP16, SND_DEV_AUDIO};
1104 char *devnames[3] = {"dsp", "dspW", "audio"};
1108 if (pcm_devclass == NULL)
1113 for (i = 0; (i < 3) && (unit == -1); i++) {
1114 devtype = devtypes[i];
1115 if (strcmp(name, devnames[i]) == 0) {
1118 if (dev_stdclone(name, NULL, devnames[i], &unit) != 1)
1122 if (unit == -1 || unit >= devclass_get_maxunit(pcm_devclass))
1126 for (i = 0; cont; i++) {
1127 pdev = make_adhoc_dev(&dsp_cdevsw, PCMMKMINOR(unit, devtype, i));
1128 if (pdev->si_flags & SI_NAMED) {
1129 if ((pdev->si_drv1 == NULL) && (pdev->si_drv2 == NULL)) {
1140 dsp_sysinit(void *p)
1142 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000);
1146 dsp_sysuninit(void *p)
1148 if (dsp_ehtag != NULL)
1149 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag);
1152 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL);
1153 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL);