a3193a9ca3
rid of the MTX_DUPOK flag on channel mutexes, which allows witness to do a better job of lock order checking. Nuke snd_chnmtxcreate() since it is no longer needed. Tested by: matk
983 lines
21 KiB
C
983 lines
21 KiB
C
/*
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* Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
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* (C) 1997 Luigi Rizzo (luigi@iet.unipi.it)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <dev/sound/pcm/sound.h>
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#include <dev/sound/pcm/vchan.h>
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#include <dev/sound/pcm/dsp.h>
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#include <sys/sysctl.h>
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#include "feeder_if.h"
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SND_DECLARE_FILE("$FreeBSD$");
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devclass_t pcm_devclass;
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int pcm_veto_load = 1;
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#ifdef USING_DEVFS
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int snd_unit = 0;
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TUNABLE_INT("hw.snd.unit", &snd_unit);
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#endif
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int snd_maxautovchans = 0;
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TUNABLE_INT("hw.snd.maxautovchans", &snd_maxautovchans);
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SYSCTL_NODE(_hw, OID_AUTO, snd, CTLFLAG_RD, 0, "Sound driver");
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static int sndstat_prepare_pcm(struct sbuf *s, device_t dev, int verbose);
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struct sysctl_ctx_list *
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snd_sysctl_tree(device_t dev)
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{
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struct snddev_info *d = device_get_softc(dev);
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return &d->sysctl_tree;
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}
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struct sysctl_oid *
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snd_sysctl_tree_top(device_t dev)
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{
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struct snddev_info *d = device_get_softc(dev);
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return d->sysctl_tree_top;
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}
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void *
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snd_mtxcreate(const char *desc, const char *type)
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{
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#ifdef USING_MUTEX
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struct mtx *m;
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m = malloc(sizeof(*m), M_DEVBUF, M_WAITOK | M_ZERO);
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if (m == NULL)
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return NULL;
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mtx_init(m, desc, type, MTX_DEF);
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return m;
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#else
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return (void *)0xcafebabe;
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#endif
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}
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void
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snd_mtxfree(void *m)
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{
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#ifdef USING_MUTEX
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struct mtx *mtx = m;
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/* mtx_assert(mtx, MA_OWNED); */
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mtx_destroy(mtx);
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free(mtx, M_DEVBUF);
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#endif
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}
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void
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snd_mtxassert(void *m)
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{
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#ifdef USING_MUTEX
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#ifdef INVARIANTS
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struct mtx *mtx = m;
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mtx_assert(mtx, MA_OWNED);
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#endif
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#endif
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}
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/*
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void
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snd_mtxlock(void *m)
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{
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#ifdef USING_MUTEX
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struct mtx *mtx = m;
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mtx_lock(mtx);
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#endif
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}
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void
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snd_mtxunlock(void *m)
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{
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#ifdef USING_MUTEX
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struct mtx *mtx = m;
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mtx_unlock(mtx);
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#endif
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}
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*/
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int
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snd_setup_intr(device_t dev, struct resource *res, int flags, driver_intr_t hand, void *param, void **cookiep)
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{
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#ifdef USING_MUTEX
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flags &= INTR_MPSAFE;
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flags |= INTR_TYPE_AV;
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#else
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flags = INTR_TYPE_AV;
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#endif
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return bus_setup_intr(dev, res, flags, hand, param, cookiep);
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}
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#ifndef PCM_DEBUG_MTX
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void
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pcm_lock(struct snddev_info *d)
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{
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snd_mtxlock(d->lock);
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}
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void
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pcm_unlock(struct snddev_info *d)
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{
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snd_mtxunlock(d->lock);
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}
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#endif
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struct pcm_channel *
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pcm_getfakechan(struct snddev_info *d)
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{
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return d->fakechan;
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}
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/* return a locked channel */
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struct pcm_channel *
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pcm_chnalloc(struct snddev_info *d, int direction, pid_t pid, int chnum)
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{
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struct pcm_channel *c;
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struct snddev_channel *sce;
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int err;
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snd_mtxassert(d->lock);
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/* scan for a free channel */
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SLIST_FOREACH(sce, &d->channels, link) {
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c = sce->channel;
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CHN_LOCK(c);
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if ((c->direction == direction) && !(c->flags & CHN_F_BUSY)) {
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if (chnum == -1 || c->num == chnum) {
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c->flags |= CHN_F_BUSY;
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c->pid = pid;
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return c;
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}
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}
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CHN_UNLOCK(c);
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}
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/* no channel available */
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if (direction == PCMDIR_PLAY) {
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if ((d->vchancount > 0) && (d->vchancount < snd_maxautovchans)) {
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/* try to create a vchan */
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SLIST_FOREACH(sce, &d->channels, link) {
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c = sce->channel;
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CHN_LOCK(c);
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if (!SLIST_EMPTY(&c->children)) {
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err = vchan_create(c);
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CHN_UNLOCK(c);
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if (!err)
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return pcm_chnalloc(d, direction, pid, -1);
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else
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device_printf(d->dev, "vchan_create(%s) == %d\n", c->name, err);
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} else
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CHN_UNLOCK(c);
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}
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}
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}
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return NULL;
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}
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/* release a locked channel and unlock it */
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int
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pcm_chnrelease(struct pcm_channel *c)
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{
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CHN_LOCKASSERT(c);
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c->flags &= ~CHN_F_BUSY;
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c->pid = -1;
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CHN_UNLOCK(c);
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return 0;
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}
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int
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pcm_chnref(struct pcm_channel *c, int ref)
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{
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int r;
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CHN_LOCKASSERT(c);
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c->refcount += ref;
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r = c->refcount;
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return r;
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}
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int
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pcm_inprog(struct snddev_info *d, int delta)
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{
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int r;
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if (delta == 0)
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return d->inprog;
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/* backtrace(); */
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pcm_lock(d);
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d->inprog += delta;
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r = d->inprog;
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pcm_unlock(d);
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return r;
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}
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static void
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pcm_setmaxautovchans(struct snddev_info *d, int num)
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{
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struct pcm_channel *c;
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struct snddev_channel *sce;
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int err, done;
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if (num > 0 && d->vchancount == 0) {
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SLIST_FOREACH(sce, &d->channels, link) {
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c = sce->channel;
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CHN_LOCK(c);
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if ((c->direction == PCMDIR_PLAY) && !(c->flags & CHN_F_BUSY)) {
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c->flags |= CHN_F_BUSY;
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err = vchan_create(c);
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if (err) {
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c->flags &= ~CHN_F_BUSY;
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CHN_UNLOCK(c);
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device_printf(d->dev, "vchan_create(%s) == %d\n", c->name, err);
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} else
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CHN_UNLOCK(c);
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return;
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}
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CHN_UNLOCK(c);
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}
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}
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if (num == 0 && d->vchancount > 0) {
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done = 0;
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while (!done) {
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done = 1;
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SLIST_FOREACH(sce, &d->channels, link) {
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c = sce->channel;
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if ((c->flags & CHN_F_VIRTUAL) && !(c->flags & CHN_F_BUSY)) {
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done = 0;
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snd_mtxlock(d->lock);
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err = vchan_destroy(c);
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snd_mtxunlock(d->lock);
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if (err)
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device_printf(d->dev, "vchan_destroy(%s) == %d\n", c->name, err);
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break; /* restart */
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}
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}
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}
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}
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}
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#ifdef USING_DEVFS
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static int
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sysctl_hw_snd_unit(SYSCTL_HANDLER_ARGS)
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{
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struct snddev_info *d;
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int error, unit;
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unit = snd_unit;
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error = sysctl_handle_int(oidp, &unit, sizeof(unit), req);
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if (error == 0 && req->newptr != NULL) {
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if (unit < 0 || unit >= devclass_get_maxunit(pcm_devclass))
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return EINVAL;
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d = devclass_get_softc(pcm_devclass, unit);
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if (d == NULL || SLIST_EMPTY(&d->channels))
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return EINVAL;
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snd_unit = unit;
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}
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return (error);
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}
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SYSCTL_PROC(_hw_snd, OID_AUTO, unit, CTLTYPE_INT | CTLFLAG_RW,
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0, sizeof(int), sysctl_hw_snd_unit, "I", "");
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#endif
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static int
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sysctl_hw_snd_maxautovchans(SYSCTL_HANDLER_ARGS)
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{
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struct snddev_info *d;
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int i, v, error;
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v = snd_maxautovchans;
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error = sysctl_handle_int(oidp, &v, sizeof(v), req);
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if (error == 0 && req->newptr != NULL) {
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if (v < 0 || v >= SND_MAXVCHANS || pcm_devclass == NULL)
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return EINVAL;
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if (v != snd_maxautovchans) {
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for (i = 0; i < devclass_get_maxunit(pcm_devclass); i++) {
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d = devclass_get_softc(pcm_devclass, i);
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if (!d)
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continue;
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pcm_setmaxautovchans(d, v);
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}
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}
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snd_maxautovchans = v;
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}
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return (error);
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}
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SYSCTL_PROC(_hw_snd, OID_AUTO, maxautovchans, CTLTYPE_INT | CTLFLAG_RW,
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0, sizeof(int), sysctl_hw_snd_maxautovchans, "I", "");
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struct pcm_channel *
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pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, void *devinfo)
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{
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struct pcm_channel *ch;
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char *dirs;
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int direction, err, *pnum;
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switch(dir) {
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case PCMDIR_PLAY:
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dirs = "play";
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direction = PCMDIR_PLAY;
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pnum = &d->playcount;
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break;
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case PCMDIR_REC:
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dirs = "record";
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direction = PCMDIR_REC;
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pnum = &d->reccount;
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break;
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|
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case PCMDIR_VIRTUAL:
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dirs = "virtual";
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direction = PCMDIR_PLAY;
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pnum = &d->vchancount;
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break;
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default:
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return NULL;
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}
|
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|
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ch = malloc(sizeof(*ch), M_DEVBUF, M_WAITOK | M_ZERO);
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if (!ch)
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return NULL;
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|
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ch->methods = kobj_create(cls, M_DEVBUF, M_WAITOK);
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if (!ch->methods) {
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free(ch, M_DEVBUF);
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|
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return NULL;
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}
|
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|
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snd_mtxlock(d->lock);
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ch->num = (*pnum)++;
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snd_mtxunlock(d->lock);
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|
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ch->pid = -1;
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ch->parentsnddev = d;
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ch->parentchannel = parent;
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ch->dev = d->dev;
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snprintf(ch->name, 32, "%s:%s:%d", device_get_nameunit(ch->dev), dirs, ch->num);
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|
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err = chn_init(ch, devinfo, dir, direction);
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if (err) {
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device_printf(d->dev, "chn_init(%s) failed: err = %d\n", ch->name, err);
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kobj_delete(ch->methods, M_DEVBUF);
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free(ch, M_DEVBUF);
|
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snd_mtxlock(d->lock);
|
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(*pnum)--;
|
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snd_mtxunlock(d->lock);
|
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|
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return NULL;
|
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}
|
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|
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return ch;
|
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}
|
|
|
|
int
|
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pcm_chn_destroy(struct pcm_channel *ch)
|
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{
|
|
struct snddev_info *d;
|
|
int err;
|
|
|
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d = ch->parentsnddev;
|
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err = chn_kill(ch);
|
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if (err) {
|
|
device_printf(d->dev, "chn_kill(%s) failed, err = %d\n", ch->name, err);
|
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return err;
|
|
}
|
|
|
|
kobj_delete(ch->methods, M_DEVBUF);
|
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free(ch, M_DEVBUF);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch)
|
|
{
|
|
struct snddev_channel *sce, *tmp, *after;
|
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int device = device_get_unit(d->dev);
|
|
|
|
/*
|
|
* Note it's confusing nomenclature.
|
|
* dev_t
|
|
* device -> pcm_device
|
|
* unit -> pcm_channel
|
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* channel -> snddev_channel
|
|
* device_t
|
|
* unit -> pcm_device
|
|
*/
|
|
|
|
sce = malloc(sizeof(*sce), M_DEVBUF, M_WAITOK | M_ZERO);
|
|
if (!sce) {
|
|
return ENOMEM;
|
|
}
|
|
|
|
snd_mtxlock(d->lock);
|
|
sce->channel = ch;
|
|
sce->chan_num= d->devcount++;
|
|
if (SLIST_EMPTY(&d->channels)) {
|
|
SLIST_INSERT_HEAD(&d->channels, sce, link);
|
|
} else {
|
|
after = NULL;
|
|
SLIST_FOREACH(tmp, &d->channels, link) {
|
|
after = tmp;
|
|
}
|
|
SLIST_INSERT_AFTER(after, sce, link);
|
|
}
|
|
snd_mtxunlock(d->lock);
|
|
sce->dsp_devt= make_dev(&dsp_cdevsw,
|
|
PCMMKMINOR(device, SND_DEV_DSP, sce->chan_num),
|
|
UID_ROOT, GID_WHEEL, 0666, "dsp%d.%d",
|
|
device, sce->chan_num);
|
|
|
|
sce->dspW_devt= make_dev(&dsp_cdevsw,
|
|
PCMMKMINOR(device, SND_DEV_DSP16, sce->chan_num),
|
|
UID_ROOT, GID_WHEEL, 0666, "dspW%d.%d",
|
|
device, sce->chan_num);
|
|
|
|
sce->audio_devt= make_dev(&dsp_cdevsw,
|
|
PCMMKMINOR(device, SND_DEV_AUDIO, sce->chan_num),
|
|
UID_ROOT, GID_WHEEL, 0666, "audio%d.%d",
|
|
device, sce->chan_num);
|
|
|
|
if (ch->direction == PCMDIR_REC)
|
|
sce->dspr_devt = make_dev(&dsp_cdevsw,
|
|
PCMMKMINOR(device, SND_DEV_DSPREC,
|
|
sce->chan_num), UID_ROOT, GID_WHEEL,
|
|
0666, "dspr%d.%d", device, sce->chan_num);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch)
|
|
{
|
|
struct snddev_channel *sce;
|
|
#if 0
|
|
int ourlock;
|
|
|
|
ourlock = 0;
|
|
if (!mtx_owned(d->lock)) {
|
|
snd_mtxlock(d->lock);
|
|
ourlock = 1;
|
|
}
|
|
#endif
|
|
|
|
SLIST_FOREACH(sce, &d->channels, link) {
|
|
if (sce->channel == ch)
|
|
goto gotit;
|
|
}
|
|
#if 0
|
|
if (ourlock)
|
|
snd_mtxunlock(d->lock);
|
|
#endif
|
|
return EINVAL;
|
|
gotit:
|
|
SLIST_REMOVE(&d->channels, sce, snddev_channel, link);
|
|
|
|
if (ch->direction == PCMDIR_REC)
|
|
d->reccount--;
|
|
else if (ch->flags & CHN_F_VIRTUAL)
|
|
d->vchancount--;
|
|
else
|
|
d->playcount--;
|
|
|
|
#if 0
|
|
if (ourlock)
|
|
snd_mtxunlock(d->lock);
|
|
#endif
|
|
free(sce, M_DEVBUF);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo)
|
|
{
|
|
struct snddev_info *d = device_get_softc(dev);
|
|
struct pcm_channel *ch;
|
|
int err;
|
|
|
|
ch = pcm_chn_create(d, NULL, cls, dir, devinfo);
|
|
if (!ch) {
|
|
device_printf(d->dev, "pcm_chn_create(%s, %d, %p) failed\n", cls->name, dir, devinfo);
|
|
return ENODEV;
|
|
}
|
|
|
|
err = pcm_chn_add(d, ch);
|
|
if (err) {
|
|
device_printf(d->dev, "pcm_chn_add(%s) failed, err=%d\n", ch->name, err);
|
|
pcm_chn_destroy(ch);
|
|
return err;
|
|
}
|
|
|
|
CHN_LOCK(ch);
|
|
if (snd_maxautovchans > 0 && (d->flags & SD_F_AUTOVCHAN) &&
|
|
ch->direction == PCMDIR_PLAY && d->vchancount == 0) {
|
|
ch->flags |= CHN_F_BUSY;
|
|
err = vchan_create(ch);
|
|
if (err) {
|
|
ch->flags &= ~CHN_F_BUSY;
|
|
CHN_UNLOCK(ch);
|
|
device_printf(d->dev, "vchan_create(%s) == %d\n", ch->name, err);
|
|
return err;
|
|
}
|
|
}
|
|
CHN_UNLOCK(ch);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
pcm_killchan(device_t dev)
|
|
{
|
|
struct snddev_info *d = device_get_softc(dev);
|
|
struct snddev_channel *sce;
|
|
struct pcm_channel *ch;
|
|
int error = 0;
|
|
|
|
sce = SLIST_FIRST(&d->channels);
|
|
ch = sce->channel;
|
|
|
|
error = pcm_chn_remove(d, sce->channel);
|
|
if (error)
|
|
return (error);
|
|
return (pcm_chn_destroy(ch));
|
|
}
|
|
|
|
int
|
|
pcm_setstatus(device_t dev, char *str)
|
|
{
|
|
struct snddev_info *d = device_get_softc(dev);
|
|
|
|
snd_mtxlock(d->lock);
|
|
strncpy(d->status, str, SND_STATUSLEN);
|
|
snd_mtxunlock(d->lock);
|
|
return 0;
|
|
}
|
|
|
|
u_int32_t
|
|
pcm_getflags(device_t dev)
|
|
{
|
|
struct snddev_info *d = device_get_softc(dev);
|
|
|
|
return d->flags;
|
|
}
|
|
|
|
void
|
|
pcm_setflags(device_t dev, u_int32_t val)
|
|
{
|
|
struct snddev_info *d = device_get_softc(dev);
|
|
|
|
d->flags = val;
|
|
}
|
|
|
|
void *
|
|
pcm_getdevinfo(device_t dev)
|
|
{
|
|
struct snddev_info *d = device_get_softc(dev);
|
|
|
|
return d->devinfo;
|
|
}
|
|
|
|
unsigned int
|
|
pcm_getbuffersize(device_t dev, unsigned int min, unsigned int deflt, unsigned int max)
|
|
{
|
|
struct snddev_info *d = device_get_softc(dev);
|
|
int sz, x;
|
|
|
|
sz = 0;
|
|
if (resource_int_value(device_get_name(dev), device_get_unit(dev), "buffersize", &sz) == 0) {
|
|
x = sz;
|
|
RANGE(sz, min, max);
|
|
if (x != sz)
|
|
device_printf(dev, "'buffersize=%d' hint is out of range (%d-%d), using %d\n", x, min, max, sz);
|
|
x = min;
|
|
while (x < sz)
|
|
x <<= 1;
|
|
if (x > sz)
|
|
x >>= 1;
|
|
if (x != sz) {
|
|
device_printf(dev, "'buffersize=%d' hint is not a power of 2, using %d\n", sz, x);
|
|
sz = x;
|
|
}
|
|
} else {
|
|
sz = deflt;
|
|
}
|
|
|
|
d->bufsz = sz;
|
|
|
|
return sz;
|
|
}
|
|
|
|
int
|
|
pcm_register(device_t dev, void *devinfo, int numplay, int numrec)
|
|
{
|
|
struct snddev_info *d = device_get_softc(dev);
|
|
|
|
if (pcm_veto_load) {
|
|
device_printf(dev, "disabled due to an error while initialising: %d\n", pcm_veto_load);
|
|
|
|
return EINVAL;
|
|
}
|
|
|
|
d->lock = snd_mtxcreate(device_get_nameunit(dev), "sound cdev");
|
|
|
|
d->flags = 0;
|
|
d->dev = dev;
|
|
d->devinfo = devinfo;
|
|
d->devcount = 0;
|
|
d->reccount = 0;
|
|
d->playcount = 0;
|
|
d->vchancount = 0;
|
|
d->inprog = 0;
|
|
|
|
SLIST_INIT(&d->channels);
|
|
SLIST_INIT(&d->channels);
|
|
|
|
if (((numplay == 0) || (numrec == 0)) && (numplay != numrec))
|
|
d->flags |= SD_F_SIMPLEX;
|
|
|
|
d->fakechan = fkchan_setup(dev);
|
|
chn_init(d->fakechan, NULL, 0, 0);
|
|
|
|
#ifdef SND_DYNSYSCTL
|
|
sysctl_ctx_init(&d->sysctl_tree);
|
|
d->sysctl_tree_top = SYSCTL_ADD_NODE(&d->sysctl_tree,
|
|
SYSCTL_STATIC_CHILDREN(_hw_snd), OID_AUTO,
|
|
device_get_nameunit(dev), CTLFLAG_RD, 0, "");
|
|
if (d->sysctl_tree_top == NULL) {
|
|
sysctl_ctx_free(&d->sysctl_tree);
|
|
goto no;
|
|
}
|
|
SYSCTL_ADD_INT(snd_sysctl_tree(dev), SYSCTL_CHILDREN(snd_sysctl_tree_top(dev)),
|
|
OID_AUTO, "buffersize", CTLFLAG_RD, &d->bufsz, 0, "");
|
|
#endif
|
|
if (numplay > 0)
|
|
vchan_initsys(dev);
|
|
if (numplay == 1)
|
|
d->flags |= SD_F_AUTOVCHAN;
|
|
|
|
sndstat_register(dev, d->status, sndstat_prepare_pcm);
|
|
return 0;
|
|
no:
|
|
snd_mtxfree(d->lock);
|
|
return ENXIO;
|
|
}
|
|
|
|
int
|
|
pcm_unregister(device_t dev)
|
|
{
|
|
struct snddev_info *d = device_get_softc(dev);
|
|
struct snddev_channel *sce;
|
|
struct pcm_channel *ch;
|
|
|
|
snd_mtxlock(d->lock);
|
|
if (d->inprog) {
|
|
device_printf(dev, "unregister: operation in progress\n");
|
|
snd_mtxunlock(d->lock);
|
|
return EBUSY;
|
|
}
|
|
if (sndstat_busy() != 0) {
|
|
device_printf(dev, "unregister: sndstat busy\n");
|
|
snd_mtxunlock(d->lock);
|
|
return EBUSY;
|
|
}
|
|
|
|
|
|
SLIST_FOREACH(sce, &d->channels, link) {
|
|
ch = sce->channel;
|
|
if (ch->refcount > 0) {
|
|
device_printf(dev, "unregister: channel %s busy (pid %d)\n", ch->name, ch->pid);
|
|
snd_mtxunlock(d->lock);
|
|
return EBUSY;
|
|
}
|
|
}
|
|
|
|
SLIST_FOREACH(sce, &d->channels, link) {
|
|
destroy_dev(sce->dsp_devt);
|
|
destroy_dev(sce->dspW_devt);
|
|
destroy_dev(sce->audio_devt);
|
|
if (sce->dspr_devt)
|
|
destroy_dev(sce->dspr_devt);
|
|
}
|
|
|
|
if (mixer_uninit(dev)) {
|
|
device_printf(dev, "unregister: mixer busy\n");
|
|
snd_mtxunlock(d->lock);
|
|
return EBUSY;
|
|
}
|
|
|
|
#ifdef SND_DYNSYSCTL
|
|
d->sysctl_tree_top = NULL;
|
|
sysctl_ctx_free(&d->sysctl_tree);
|
|
#endif
|
|
while (!SLIST_EMPTY(&d->channels))
|
|
pcm_killchan(dev);
|
|
|
|
chn_kill(d->fakechan);
|
|
fkchan_kill(d->fakechan);
|
|
|
|
sndstat_unregister(dev);
|
|
snd_mtxunlock(d->lock);
|
|
snd_mtxfree(d->lock);
|
|
return 0;
|
|
}
|
|
|
|
/************************************************************************/
|
|
|
|
static int
|
|
sndstat_prepare_pcm(struct sbuf *s, device_t dev, int verbose)
|
|
{
|
|
struct snddev_info *d;
|
|
struct snddev_channel *sce;
|
|
struct pcm_channel *c;
|
|
struct pcm_feeder *f;
|
|
int pc, rc, vc;
|
|
|
|
if (verbose < 1)
|
|
return 0;
|
|
|
|
d = device_get_softc(dev);
|
|
if (!d)
|
|
return ENXIO;
|
|
|
|
snd_mtxlock(d->lock);
|
|
if (!SLIST_EMPTY(&d->channels)) {
|
|
pc = rc = vc = 0;
|
|
SLIST_FOREACH(sce, &d->channels, link) {
|
|
c = sce->channel;
|
|
if (c->direction == PCMDIR_PLAY) {
|
|
if (c->flags & CHN_F_VIRTUAL)
|
|
vc++;
|
|
else
|
|
pc++;
|
|
} else
|
|
rc++;
|
|
}
|
|
sbuf_printf(s, " (%dp/%dr/%dv channels%s%s)", d->playcount, d->reccount, d->vchancount,
|
|
(d->flags & SD_F_SIMPLEX)? "" : " duplex",
|
|
#ifdef USING_DEVFS
|
|
(device_get_unit(dev) == snd_unit)? " default" : ""
|
|
#else
|
|
""
|
|
#endif
|
|
);
|
|
|
|
if (verbose <= 1) {
|
|
snd_mtxunlock(d->lock);
|
|
return 0;
|
|
}
|
|
|
|
SLIST_FOREACH(sce, &d->channels, link) {
|
|
c = sce->channel;
|
|
sbuf_printf(s, "\n\t");
|
|
|
|
/* it would be better to indent child channels */
|
|
sbuf_printf(s, "%s[%s]: ", c->parentchannel? c->parentchannel->name : "", c->name);
|
|
sbuf_printf(s, "spd %d", c->speed);
|
|
if (c->speed != sndbuf_getspd(c->bufhard))
|
|
sbuf_printf(s, "/%d", sndbuf_getspd(c->bufhard));
|
|
sbuf_printf(s, ", fmt 0x%08x", c->format);
|
|
if (c->format != sndbuf_getfmt(c->bufhard))
|
|
sbuf_printf(s, "/0x%08x", sndbuf_getfmt(c->bufhard));
|
|
sbuf_printf(s, ", flags 0x%08x, 0x%08x", c->flags, c->feederflags);
|
|
if (c->pid != -1)
|
|
sbuf_printf(s, ", pid %d", c->pid);
|
|
sbuf_printf(s, "\n\t");
|
|
|
|
if (c->bufhard != NULL && c->bufsoft != NULL) {
|
|
sbuf_printf(s, "interrupts %d, ", c->interrupts);
|
|
if (c->direction == PCMDIR_REC)
|
|
sbuf_printf(s, "overruns %d, hfree %d, sfree %d",
|
|
c->xruns, sndbuf_getfree(c->bufhard), sndbuf_getfree(c->bufsoft));
|
|
else
|
|
sbuf_printf(s, "underruns %d, ready %d",
|
|
c->xruns, sndbuf_getready(c->bufsoft));
|
|
sbuf_printf(s, "\n\t");
|
|
}
|
|
|
|
sbuf_printf(s, "{%s}", (c->direction == PCMDIR_REC)? "hardware" : "userland");
|
|
sbuf_printf(s, " -> ");
|
|
f = c->feeder;
|
|
while (f->source != NULL)
|
|
f = f->source;
|
|
while (f != NULL) {
|
|
sbuf_printf(s, "%s", f->class->name);
|
|
if (f->desc->type == FEEDER_FMT)
|
|
sbuf_printf(s, "(0x%08x -> 0x%08x)", f->desc->in, f->desc->out);
|
|
if (f->desc->type == FEEDER_RATE)
|
|
sbuf_printf(s, "(%d -> %d)", FEEDER_GET(f, FEEDRATE_SRC), FEEDER_GET(f, FEEDRATE_DST));
|
|
if (f->desc->type == FEEDER_ROOT || f->desc->type == FEEDER_MIXER)
|
|
sbuf_printf(s, "(0x%08x)", f->desc->out);
|
|
sbuf_printf(s, " -> ");
|
|
f = f->parent;
|
|
}
|
|
sbuf_printf(s, "{%s}", (c->direction == PCMDIR_REC)? "userland" : "hardware");
|
|
}
|
|
} else
|
|
sbuf_printf(s, " (mixer only)");
|
|
snd_mtxunlock(d->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/************************************************************************/
|
|
|
|
#ifdef SND_DYNSYSCTL
|
|
int
|
|
sysctl_hw_snd_vchans(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
struct snddev_info *d;
|
|
struct snddev_channel *sce;
|
|
struct pcm_channel *c;
|
|
int err, newcnt, cnt, busy;
|
|
int x;
|
|
|
|
d = oidp->oid_arg1;
|
|
|
|
x = pcm_inprog(d, 1);
|
|
if (x != 1) {
|
|
printf("x: %d\n", x);
|
|
pcm_inprog(d, -1);
|
|
return EINPROGRESS;
|
|
}
|
|
|
|
busy = 0;
|
|
cnt = 0;
|
|
SLIST_FOREACH(sce, &d->channels, link) {
|
|
c = sce->channel;
|
|
CHN_LOCK(c);
|
|
if ((c->direction == PCMDIR_PLAY) && (c->flags & CHN_F_VIRTUAL)) {
|
|
cnt++;
|
|
if (c->flags & CHN_F_BUSY)
|
|
busy++;
|
|
}
|
|
CHN_UNLOCK(c);
|
|
}
|
|
|
|
newcnt = cnt;
|
|
|
|
err = sysctl_handle_int(oidp, &newcnt, sizeof(newcnt), req);
|
|
|
|
if (err == 0 && req->newptr != NULL) {
|
|
|
|
if (newcnt < 0 || newcnt > SND_MAXVCHANS) {
|
|
pcm_inprog(d, -1);
|
|
return E2BIG;
|
|
}
|
|
|
|
if (newcnt > cnt) {
|
|
/* add new vchans - find a parent channel first */
|
|
SLIST_FOREACH(sce, &d->channels, link) {
|
|
c = sce->channel;
|
|
CHN_LOCK(c);
|
|
/* not a candidate if not a play channel */
|
|
if (c->direction != PCMDIR_PLAY)
|
|
goto next;
|
|
/* not a candidate if a virtual channel */
|
|
if (c->flags & CHN_F_VIRTUAL)
|
|
goto next;
|
|
/* not a candidate if it's in use */
|
|
if (!(c->flags & CHN_F_BUSY) ||
|
|
!(SLIST_EMPTY(&c->children)))
|
|
/*
|
|
* if we get here we're a nonvirtual
|
|
* play channel, and either
|
|
* 1) not busy
|
|
* 2) busy with children, not directly
|
|
* open
|
|
*
|
|
* thus we can add children
|
|
*/
|
|
goto addok;
|
|
next:
|
|
CHN_UNLOCK(c);
|
|
}
|
|
pcm_inprog(d, -1);
|
|
return EBUSY;
|
|
addok:
|
|
c->flags |= CHN_F_BUSY;
|
|
while (err == 0 && newcnt > cnt) {
|
|
err = vchan_create(c);
|
|
if (err == 0)
|
|
cnt++;
|
|
}
|
|
if (SLIST_EMPTY(&c->children))
|
|
c->flags &= ~CHN_F_BUSY;
|
|
CHN_UNLOCK(c);
|
|
} else if (newcnt < cnt) {
|
|
if (busy > newcnt) {
|
|
printf("cnt %d, newcnt %d, busy %d\n", cnt, newcnt, busy);
|
|
pcm_inprog(d, -1);
|
|
return EBUSY;
|
|
}
|
|
|
|
snd_mtxlock(d->lock);
|
|
while (err == 0 && newcnt < cnt) {
|
|
SLIST_FOREACH(sce, &d->channels, link) {
|
|
c = sce->channel;
|
|
CHN_LOCK(c);
|
|
if ((c->flags & (CHN_F_BUSY | CHN_F_VIRTUAL)) == CHN_F_VIRTUAL)
|
|
goto remok;
|
|
|
|
CHN_UNLOCK(c);
|
|
}
|
|
snd_mtxunlock(d->lock);
|
|
pcm_inprog(d, -1);
|
|
return EINVAL;
|
|
remok:
|
|
CHN_UNLOCK(c);
|
|
err = vchan_destroy(c);
|
|
if (err == 0)
|
|
cnt--;
|
|
}
|
|
snd_mtxunlock(d->lock);
|
|
}
|
|
}
|
|
pcm_inprog(d, -1);
|
|
return err;
|
|
}
|
|
#endif
|
|
|
|
/************************************************************************/
|
|
|
|
static moduledata_t sndpcm_mod = {
|
|
"snd_pcm",
|
|
NULL,
|
|
NULL
|
|
};
|
|
DECLARE_MODULE(snd_pcm, sndpcm_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
|
|
MODULE_VERSION(snd_pcm, PCM_MODVER);
|