git: 7ad5f383fcb5 - main - sound: Move vchan-related code to pcm/vchan.*
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Date: Mon, 06 May 2024 18:36:40 UTC
The branch main has been updated by christos: URL: https://cgit.FreeBSD.org/src/commit/?id=7ad5f383fcb507482d5606c8eb7a324b3621a9db commit 7ad5f383fcb507482d5606c8eb7a324b3621a9db Author: Christos Margiolis <christos@FreeBSD.org> AuthorDate: 2024-05-06 18:32:46 +0000 Commit: Christos Margiolis <christos@FreeBSD.org> CommitDate: 2024-05-06 18:35:55 +0000 sound: Move vchan-related code to pcm/vchan.* pcm/sound.* contains code that should be part of pcm/vchan.*. Changes: - pcm_setvchans() -> vchan_setnew() - pcm_setmaxautovchans() -> vchan_setmaxauto() - hw.snd.maxautovchans moved to pcm/vchan.c - snd_maxautovchans declaration moved to pcm/vchan.h and definition to pcm/vchan.c Sponsored by: The FreeBSD Foundation MFC after: 1 week Reviewed by: dev_submerge.ch, markj Differential Revision: https://reviews.freebsd.org/D45015 --- sys/dev/sound/pcm/feeder.c | 1 + sys/dev/sound/pcm/sound.c | 176 +-------------------------------------------- sys/dev/sound/pcm/sound.h | 2 - sys/dev/sound/pcm/vchan.c | 173 +++++++++++++++++++++++++++++++++++++++++++- sys/dev/sound/pcm/vchan.h | 5 ++ 5 files changed, 180 insertions(+), 177 deletions(-) diff --git a/sys/dev/sound/pcm/feeder.c b/sys/dev/sound/pcm/feeder.c index 78443ad76140..0113299bd0d4 100644 --- a/sys/dev/sound/pcm/feeder.c +++ b/sys/dev/sound/pcm/feeder.c @@ -32,6 +32,7 @@ #endif #include <dev/sound/pcm/sound.h> +#include <dev/sound/pcm/vchan.h> #include "feeder_if.h" diff --git a/sys/dev/sound/pcm/sound.c b/sys/dev/sound/pcm/sound.c index afa19f9f0624..971054261030 100644 --- a/sys/dev/sound/pcm/sound.c +++ b/sys/dev/sound/pcm/sound.c @@ -56,8 +56,6 @@ static int snd_unit_auto = -1; SYSCTL_INT(_hw_snd, OID_AUTO, default_auto, CTLFLAG_RWTUN, &snd_unit_auto, 0, "assign default unit to a newly attached device"); -int snd_maxautovchans = 16; - SYSCTL_NODE(_hw, OID_AUTO, snd, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Sound driver"); @@ -111,126 +109,6 @@ snd_setup_intr(device_t dev, struct resource *res, int flags, driver_intr_t hand return bus_setup_intr(dev, res, flags, NULL, hand, param, cookiep); } -int -pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num) -{ - struct pcm_channel *c, *ch, *nch; - struct pcmchan_caps *caps; - int i, err, vcnt; - - PCM_BUSYASSERT(d); - - if ((direction == PCMDIR_PLAY && d->playcount < 1) || - (direction == PCMDIR_REC && d->reccount < 1)) - return (ENODEV); - - if (!(d->flags & SD_F_AUTOVCHAN)) - return (EINVAL); - - if (newcnt < 0 || newcnt > SND_MAXVCHANS) - return (E2BIG); - - if (direction == PCMDIR_PLAY) - vcnt = d->pvchancount; - else if (direction == PCMDIR_REC) - vcnt = d->rvchancount; - else - return (EINVAL); - - if (newcnt > vcnt) { - KASSERT(num == -1 || - (num >= 0 && num < SND_MAXVCHANS && (newcnt - 1) == vcnt), - ("bogus vchan_create() request num=%d newcnt=%d vcnt=%d", - num, newcnt, vcnt)); - /* add new vchans - find a parent channel first */ - ch = NULL; - CHN_FOREACH(c, d, channels.pcm) { - CHN_LOCK(c); - if (c->direction == direction && - ((c->flags & CHN_F_HAS_VCHAN) || (vcnt == 0 && - c->refcount < 1 && - !(c->flags & (CHN_F_BUSY | CHN_F_VIRTUAL))))) { - /* - * Reuse hw channel with vchans already - * created. - */ - if (c->flags & CHN_F_HAS_VCHAN) { - ch = c; - break; - } - /* - * No vchans ever created, look for - * channels with supported formats. - */ - caps = chn_getcaps(c); - if (caps == NULL) { - CHN_UNLOCK(c); - continue; - } - for (i = 0; caps->fmtlist[i] != 0; i++) { - if (caps->fmtlist[i] & AFMT_CONVERTIBLE) - break; - } - if (caps->fmtlist[i] != 0) { - ch = c; - break; - } - } - CHN_UNLOCK(c); - } - if (ch == NULL) - return (EBUSY); - ch->flags |= CHN_F_BUSY; - err = 0; - while (err == 0 && newcnt > vcnt) { - err = vchan_create(ch, num); - if (err == 0) - vcnt++; - else if (err == E2BIG && newcnt > vcnt) - device_printf(d->dev, - "%s: err=%d Maximum channel reached.\n", - __func__, err); - } - if (vcnt == 0) - ch->flags &= ~CHN_F_BUSY; - CHN_UNLOCK(ch); - if (err != 0) - return (err); - } else if (newcnt < vcnt) { - KASSERT(num == -1, - ("bogus vchan_destroy() request num=%d", num)); - CHN_FOREACH(c, d, channels.pcm) { - CHN_LOCK(c); - if (c->direction != direction || - CHN_EMPTY(c, children) || - !(c->flags & CHN_F_HAS_VCHAN)) { - CHN_UNLOCK(c); - continue; - } - CHN_FOREACH_SAFE(ch, c, nch, children) { - CHN_LOCK(ch); - if (vcnt == 1 && c->refcount > 0) { - CHN_UNLOCK(ch); - break; - } - if (!(ch->flags & CHN_F_BUSY) && - ch->refcount < 1) { - err = vchan_destroy(ch); - if (err == 0) - vcnt--; - } else - CHN_UNLOCK(ch); - if (vcnt == newcnt) - break; - } - CHN_UNLOCK(c); - break; - } - } - - return (0); -} - /* return error status and a locked channel */ int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, @@ -287,7 +165,7 @@ vchan_alloc: /* no channel available */ if (!(vchancount > 0 && vchancount < snd_maxautovchans)) return (err); - err = pcm_setvchans(d, direction, vchancount + 1, -1); + err = vchan_setnew(d, direction, vchancount + 1, -1); if (err == 0) { retry = true; goto retry_chnalloc; @@ -296,25 +174,6 @@ vchan_alloc: return (err); } -static void -pcm_setmaxautovchans(struct snddev_info *d, int num) -{ - PCM_BUSYASSERT(d); - - if (num < 0) - return; - - if (num >= 0 && d->pvchancount > num) - (void)pcm_setvchans(d, PCMDIR_PLAY, num, -1); - else if (num > 0 && d->pvchancount == 0) - (void)pcm_setvchans(d, PCMDIR_PLAY, 1, -1); - - if (num >= 0 && d->rvchancount > num) - (void)pcm_setvchans(d, PCMDIR_REC, num, -1); - else if (num > 0 && d->rvchancount == 0) - (void)pcm_setvchans(d, PCMDIR_REC, 1, -1); -} - static int sysctl_hw_snd_default_unit(SYSCTL_HANDLER_ARGS) { @@ -338,37 +197,6 @@ SYSCTL_PROC(_hw_snd, OID_AUTO, default_unit, sizeof(int), sysctl_hw_snd_default_unit, "I", "default sound device"); -static int -sysctl_hw_snd_maxautovchans(SYSCTL_HANDLER_ARGS) -{ - struct snddev_info *d; - int i, v, error; - - v = snd_maxautovchans; - error = sysctl_handle_int(oidp, &v, 0, req); - if (error == 0 && req->newptr != NULL) { - if (v < 0) - v = 0; - if (v > SND_MAXVCHANS) - v = SND_MAXVCHANS; - snd_maxautovchans = v; - for (i = 0; pcm_devclass != NULL && - i < devclass_get_maxunit(pcm_devclass); i++) { - d = devclass_get_softc(pcm_devclass, i); - if (!PCM_REGISTERED(d)) - continue; - PCM_ACQUIRE_QUICK(d); - pcm_setmaxautovchans(d, v); - PCM_RELEASE_QUICK(d); - } - } - return (error); -} -SYSCTL_PROC(_hw_snd, OID_AUTO, maxautovchans, - CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, 0, sizeof(int), - sysctl_hw_snd_maxautovchans, "I", - "maximum virtual channel"); - void pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch) { @@ -549,7 +377,7 @@ pcm_setstatus(device_t dev, char *str) if (d->playcount > 0 || d->reccount > 0) d->flags |= SD_F_AUTOVCHAN; - pcm_setmaxautovchans(d, snd_maxautovchans); + vchan_setmaxauto(d, snd_maxautovchans); strlcpy(d->status, str, SND_STATUSLEN); diff --git a/sys/dev/sound/pcm/sound.h b/sys/dev/sound/pcm/sound.h index 5a750440cbea..e4a3ba41ee7f 100644 --- a/sys/dev/sound/pcm/sound.h +++ b/sys/dev/sound/pcm/sound.h @@ -247,7 +247,6 @@ enum { extern int pcm_veto_load; extern int snd_unit; -extern int snd_maxautovchans; extern int snd_verbose; extern devclass_t pcm_devclass; extern struct unrhdr *pcmsg_unrhdr; @@ -265,7 +264,6 @@ extern struct unrhdr *pcmsg_unrhdr; SYSCTL_DECL(_hw_snd); -int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, pid_t pid, char *comm); diff --git a/sys/dev/sound/pcm/vchan.c b/sys/dev/sound/pcm/vchan.c index 1a21b7049b77..9df23298b742 100644 --- a/sys/dev/sound/pcm/vchan.c +++ b/sys/dev/sound/pcm/vchan.c @@ -57,6 +57,8 @@ struct vchan_info { int trigger; }; +int snd_maxautovchans = 16; + static void * vchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) @@ -337,7 +339,7 @@ sysctl_dev_pcm_vchans(SYSCTL_HANDLER_ARGS) cnt = 0; if (cnt > SND_MAXVCHANS) cnt = SND_MAXVCHANS; - err = pcm_setvchans(d, direction, cnt, -1); + err = vchan_setnew(d, direction, cnt, -1); } PCM_RELEASE_QUICK(d); @@ -930,6 +932,175 @@ vchan_sync(struct pcm_channel *c) return (ret); } +int +vchan_setnew(struct snddev_info *d, int direction, int newcnt, int num) +{ + struct pcm_channel *c, *ch, *nch; + struct pcmchan_caps *caps; + int i, err, vcnt; + + PCM_BUSYASSERT(d); + + if ((direction == PCMDIR_PLAY && d->playcount < 1) || + (direction == PCMDIR_REC && d->reccount < 1)) + return (ENODEV); + + if (!(d->flags & SD_F_AUTOVCHAN)) + return (EINVAL); + + if (newcnt < 0 || newcnt > SND_MAXVCHANS) + return (E2BIG); + + if (direction == PCMDIR_PLAY) + vcnt = d->pvchancount; + else if (direction == PCMDIR_REC) + vcnt = d->rvchancount; + else + return (EINVAL); + + if (newcnt > vcnt) { + KASSERT(num == -1 || + (num >= 0 && num < SND_MAXVCHANS && (newcnt - 1) == vcnt), + ("bogus vchan_create() request num=%d newcnt=%d vcnt=%d", + num, newcnt, vcnt)); + /* add new vchans - find a parent channel first */ + ch = NULL; + CHN_FOREACH(c, d, channels.pcm) { + CHN_LOCK(c); + if (c->direction == direction && + ((c->flags & CHN_F_HAS_VCHAN) || (vcnt == 0 && + c->refcount < 1 && + !(c->flags & (CHN_F_BUSY | CHN_F_VIRTUAL))))) { + /* + * Reuse hw channel with vchans already + * created. + */ + if (c->flags & CHN_F_HAS_VCHAN) { + ch = c; + break; + } + /* + * No vchans ever created, look for + * channels with supported formats. + */ + caps = chn_getcaps(c); + if (caps == NULL) { + CHN_UNLOCK(c); + continue; + } + for (i = 0; caps->fmtlist[i] != 0; i++) { + if (caps->fmtlist[i] & AFMT_CONVERTIBLE) + break; + } + if (caps->fmtlist[i] != 0) { + ch = c; + break; + } + } + CHN_UNLOCK(c); + } + if (ch == NULL) + return (EBUSY); + ch->flags |= CHN_F_BUSY; + err = 0; + while (err == 0 && newcnt > vcnt) { + err = vchan_create(ch, num); + if (err == 0) + vcnt++; + else if (err == E2BIG && newcnt > vcnt) + device_printf(d->dev, + "%s: err=%d Maximum channel reached.\n", + __func__, err); + } + if (vcnt == 0) + ch->flags &= ~CHN_F_BUSY; + CHN_UNLOCK(ch); + if (err != 0) + return (err); + } else if (newcnt < vcnt) { + KASSERT(num == -1, + ("bogus vchan_destroy() request num=%d", num)); + CHN_FOREACH(c, d, channels.pcm) { + CHN_LOCK(c); + if (c->direction != direction || + CHN_EMPTY(c, children) || + !(c->flags & CHN_F_HAS_VCHAN)) { + CHN_UNLOCK(c); + continue; + } + CHN_FOREACH_SAFE(ch, c, nch, children) { + CHN_LOCK(ch); + if (vcnt == 1 && c->refcount > 0) { + CHN_UNLOCK(ch); + break; + } + if (!(ch->flags & CHN_F_BUSY) && + ch->refcount < 1) { + err = vchan_destroy(ch); + if (err == 0) + vcnt--; + } else + CHN_UNLOCK(ch); + if (vcnt == newcnt) + break; + } + CHN_UNLOCK(c); + break; + } + } + + return (0); +} + +void +vchan_setmaxauto(struct snddev_info *d, int num) +{ + PCM_BUSYASSERT(d); + + if (num < 0) + return; + + if (num >= 0 && d->pvchancount > num) + (void)vchan_setnew(d, PCMDIR_PLAY, num, -1); + else if (num > 0 && d->pvchancount == 0) + (void)vchan_setnew(d, PCMDIR_PLAY, 1, -1); + + if (num >= 0 && d->rvchancount > num) + (void)vchan_setnew(d, PCMDIR_REC, num, -1); + else if (num > 0 && d->rvchancount == 0) + (void)vchan_setnew(d, PCMDIR_REC, 1, -1); +} + +static int +sysctl_hw_snd_maxautovchans(SYSCTL_HANDLER_ARGS) +{ + struct snddev_info *d; + int i, v, error; + + v = snd_maxautovchans; + error = sysctl_handle_int(oidp, &v, 0, req); + if (error == 0 && req->newptr != NULL) { + if (v < 0) + v = 0; + if (v > SND_MAXVCHANS) + v = SND_MAXVCHANS; + snd_maxautovchans = v; + for (i = 0; pcm_devclass != NULL && + i < devclass_get_maxunit(pcm_devclass); i++) { + d = devclass_get_softc(pcm_devclass, i); + if (!PCM_REGISTERED(d)) + continue; + PCM_ACQUIRE_QUICK(d); + vchan_setmaxauto(d, v); + PCM_RELEASE_QUICK(d); + } + } + return (error); +} +SYSCTL_PROC(_hw_snd, OID_AUTO, maxautovchans, + CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, 0, sizeof(int), + sysctl_hw_snd_maxautovchans, "I", "maximum virtual channel"); + void vchan_initsys(device_t dev) { diff --git a/sys/dev/sound/pcm/vchan.h b/sys/dev/sound/pcm/vchan.h index e2dcc9761261..dcc1d6e9ff32 100644 --- a/sys/dev/sound/pcm/vchan.h +++ b/sys/dev/sound/pcm/vchan.h @@ -30,6 +30,8 @@ #ifndef _SND_VCHAN_H_ #define _SND_VCHAN_H_ +extern int snd_maxautovchans; + int vchan_create(struct pcm_channel *, int); int vchan_destroy(struct pcm_channel *); @@ -45,6 +47,9 @@ int vchan_sync(struct pcm_channel *); sndbuf_getfmt((c)->bufhard) != (c)->parentchannel->format || \ sndbuf_getspd((c)->bufhard) != (c)->parentchannel->speed)) +int vchan_setnew(struct snddev_info *, int, int, int); +void vchan_setmaxauto(struct snddev_info *, int); + void vchan_initsys(device_t); /*