2bc599822b
calling destroy_dev() with sleepable malloc(9). The entire opetation is being serialized through pcm cv from top down, so dropping mutex is rather safe. Reported by: delphij
2928 lines
72 KiB
C
2928 lines
72 KiB
C
/*-
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* Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
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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 <sys/ctype.h>
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SND_DECLARE_FILE("$FreeBSD$");
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static int dsp_mmap_allow_prot_exec = 0;
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SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RW,
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&dsp_mmap_allow_prot_exec, 0, "linux mmap compatibility");
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struct dsp_cdevinfo {
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struct pcm_channel *rdch, *wrch;
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int busy, simplex;
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TAILQ_ENTRY(dsp_cdevinfo) link;
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};
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#define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch)
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#define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch)
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#define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex)
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#define DSP_CDEVINFO_CACHESIZE 8
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#define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \
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(y) != NULL && (y)->si_drv1 != NULL)
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#define OLDPCM_IOCTL
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static d_open_t dsp_open;
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static d_close_t dsp_close;
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static d_read_t dsp_read;
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static d_write_t dsp_write;
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static d_ioctl_t dsp_ioctl;
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static d_poll_t dsp_poll;
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static d_mmap_t dsp_mmap;
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struct cdevsw dsp_cdevsw = {
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.d_version = D_VERSION,
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.d_open = dsp_open,
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.d_close = dsp_close,
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.d_read = dsp_read,
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.d_write = dsp_write,
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.d_ioctl = dsp_ioctl,
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.d_poll = dsp_poll,
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.d_mmap = dsp_mmap,
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.d_name = "dsp",
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};
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#ifdef USING_DEVFS
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static eventhandler_tag dsp_ehtag = NULL;
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static int dsp_umax = -1;
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static int dsp_cmax = -1;
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#endif
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static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group);
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static int dsp_oss_syncstart(int sg_id);
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static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy);
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#ifdef OSSV4_EXPERIMENT
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static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled);
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static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map);
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static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map);
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static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label);
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static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label);
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static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song);
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static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song);
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static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name);
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#endif
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static struct snddev_info *
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dsp_get_info(struct cdev *dev)
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{
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return (devclass_get_softc(pcm_devclass, PCMUNIT(dev)));
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}
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static uint32_t
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dsp_get_flags(struct cdev *dev)
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{
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device_t bdev;
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bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev));
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return ((bdev != NULL) ? pcm_getflags(bdev) : 0xffffffff);
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}
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static void
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dsp_set_flags(struct cdev *dev, uint32_t flags)
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{
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device_t bdev;
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bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev));
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if (bdev != NULL)
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pcm_setflags(bdev, flags);
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}
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/*
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* return the channels associated with an open device instance.
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* lock channels specified.
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*/
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static int
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getchns(struct cdev *dev, struct pcm_channel **rdch, struct pcm_channel **wrch,
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uint32_t prio)
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{
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struct snddev_info *d;
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struct pcm_channel *ch;
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uint32_t flags;
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if (PCM_SIMPLEX(dev) != 0) {
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d = dsp_get_info(dev);
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if (!PCM_REGISTERED(d))
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return (ENXIO);
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pcm_lock(d);
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PCM_WAIT(d);
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PCM_ACQUIRE(d);
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/*
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* Note: order is important -
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* pcm flags -> prio query flags -> wild guess
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*/
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ch = NULL;
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flags = dsp_get_flags(dev);
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if (flags & SD_F_PRIO_WR) {
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ch = PCM_RDCH(dev);
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PCM_RDCH(dev) = NULL;
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} else if (flags & SD_F_PRIO_RD) {
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ch = PCM_WRCH(dev);
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PCM_WRCH(dev) = NULL;
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} else if (prio & SD_F_PRIO_WR) {
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ch = PCM_RDCH(dev);
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PCM_RDCH(dev) = NULL;
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flags |= SD_F_PRIO_WR;
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} else if (prio & SD_F_PRIO_RD) {
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ch = PCM_WRCH(dev);
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PCM_WRCH(dev) = NULL;
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flags |= SD_F_PRIO_RD;
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} else if (PCM_WRCH(dev) != NULL) {
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ch = PCM_RDCH(dev);
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PCM_RDCH(dev) = NULL;
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flags |= SD_F_PRIO_WR;
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} else if (PCM_RDCH(dev) != NULL) {
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ch = PCM_WRCH(dev);
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PCM_WRCH(dev) = NULL;
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flags |= SD_F_PRIO_RD;
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}
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PCM_SIMPLEX(dev) = 0;
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dsp_set_flags(dev, flags);
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if (ch != NULL) {
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CHN_LOCK(ch);
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pcm_chnref(ch, -1);
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pcm_chnrelease(ch);
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}
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PCM_RELEASE(d);
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pcm_unlock(d);
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}
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*rdch = PCM_RDCH(dev);
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*wrch = PCM_WRCH(dev);
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if (*rdch != NULL && (prio & SD_F_PRIO_RD))
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CHN_LOCK(*rdch);
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if (*wrch != NULL && (prio & SD_F_PRIO_WR))
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CHN_LOCK(*wrch);
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return (0);
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}
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/* unlock specified channels */
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static void
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relchns(struct cdev *dev, struct pcm_channel *rdch, struct pcm_channel *wrch,
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uint32_t prio)
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{
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if (wrch != NULL && (prio & SD_F_PRIO_WR))
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CHN_UNLOCK(wrch);
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if (rdch != NULL && (prio & SD_F_PRIO_RD))
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CHN_UNLOCK(rdch);
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}
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static void
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dsp_cdevinfo_alloc(struct cdev *dev,
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struct pcm_channel *rdch, struct pcm_channel *wrch)
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{
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struct snddev_info *d;
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struct dsp_cdevinfo *cdi;
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int simplex;
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d = dsp_get_info(dev);
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KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 == NULL &&
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rdch != wrch,
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("bogus %s(), what are you trying to accomplish here?", __func__));
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PCM_BUSYASSERT(d);
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mtx_assert(d->lock, MA_OWNED);
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simplex = (dsp_get_flags(dev) & SD_F_SIMPLEX) ? 1 : 0;
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/*
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* Scan for free instance entry and put it into the end of list.
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* Create new one if necessary.
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*/
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TAILQ_FOREACH(cdi, &d->dsp_cdevinfo_pool, link) {
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if (cdi->busy != 0)
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break;
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cdi->rdch = rdch;
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cdi->wrch = wrch;
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cdi->simplex = simplex;
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cdi->busy = 1;
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TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link);
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TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link);
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dev->si_drv1 = cdi;
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return;
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}
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pcm_unlock(d);
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cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO);
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pcm_lock(d);
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cdi->rdch = rdch;
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cdi->wrch = wrch;
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cdi->simplex = simplex;
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cdi->busy = 1;
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TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link);
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dev->si_drv1 = cdi;
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}
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static void
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dsp_cdevinfo_free(struct cdev *dev)
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{
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struct snddev_info *d;
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struct dsp_cdevinfo *cdi, *tmp;
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uint32_t flags;
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int i;
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d = dsp_get_info(dev);
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KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 != NULL &&
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PCM_RDCH(dev) == NULL && PCM_WRCH(dev) == NULL,
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("bogus %s(), what are you trying to accomplish here?", __func__));
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PCM_BUSYASSERT(d);
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mtx_assert(d->lock, MA_OWNED);
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cdi = dev->si_drv1;
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dev->si_drv1 = NULL;
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cdi->rdch = NULL;
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cdi->wrch = NULL;
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cdi->simplex = 0;
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cdi->busy = 0;
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/*
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* Once it is free, move it back to the beginning of list for
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* faster new entry allocation.
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*/
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TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link);
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TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link);
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/*
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* Scan the list, cache free entries up to DSP_CDEVINFO_CACHESIZE.
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* Reset simplex flags.
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*/
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flags = dsp_get_flags(dev) & ~SD_F_PRIO_SET;
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i = DSP_CDEVINFO_CACHESIZE;
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TAILQ_FOREACH_SAFE(cdi, &d->dsp_cdevinfo_pool, link, tmp) {
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if (cdi->busy != 0) {
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if (cdi->simplex == 0) {
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if (cdi->rdch != NULL)
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flags |= SD_F_PRIO_RD;
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if (cdi->wrch != NULL)
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flags |= SD_F_PRIO_WR;
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}
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} else {
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if (i == 0) {
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TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link);
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free(cdi, M_DEVBUF);
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} else
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i--;
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}
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}
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dsp_set_flags(dev, flags);
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}
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void
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dsp_cdevinfo_init(struct snddev_info *d)
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{
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struct dsp_cdevinfo *cdi;
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int i;
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KASSERT(d != NULL, ("NULL snddev_info"));
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PCM_BUSYASSERT(d);
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mtx_assert(d->lock, MA_NOTOWNED);
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TAILQ_INIT(&d->dsp_cdevinfo_pool);
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for (i = 0; i < DSP_CDEVINFO_CACHESIZE; i++) {
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cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO);
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TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link);
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}
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}
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void
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dsp_cdevinfo_flush(struct snddev_info *d)
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{
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struct dsp_cdevinfo *cdi, *tmp;
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KASSERT(d != NULL, ("NULL snddev_info"));
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PCM_BUSYASSERT(d);
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mtx_assert(d->lock, MA_NOTOWNED);
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cdi = TAILQ_FIRST(&d->dsp_cdevinfo_pool);
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while (cdi != NULL) {
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tmp = TAILQ_NEXT(cdi, link);
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free(cdi, M_DEVBUF);
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cdi = tmp;
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}
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TAILQ_INIT(&d->dsp_cdevinfo_pool);
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}
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/* duplex / simplex cdev type */
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enum {
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DSP_CDEV_TYPE_RDONLY, /* simplex read-only (record) */
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DSP_CDEV_TYPE_WRONLY, /* simplex write-only (play) */
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DSP_CDEV_TYPE_RDWR, /* duplex read, write, or both */
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};
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#define DSP_F_VALID(x) ((x) & (FREAD | FWRITE))
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#define DSP_F_DUPLEX(x) (((x) & (FREAD | FWRITE)) == (FREAD | FWRITE))
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#define DSP_F_SIMPLEX(x) (!DSP_F_DUPLEX(x))
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#define DSP_F_READ(x) ((x) & FREAD)
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#define DSP_F_WRITE(x) ((x) & FWRITE)
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static const struct {
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int type;
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char *name;
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char *sep;
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int use_sep;
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int hw;
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int max;
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uint32_t fmt, spd;
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int query;
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} dsp_cdevs[] = {
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{ SND_DEV_DSP, "dsp", ".", 0, 0, 0,
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AFMT_U8, DSP_DEFAULT_SPEED, DSP_CDEV_TYPE_RDWR },
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{ SND_DEV_AUDIO, "audio", ".", 0, 0, 0,
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AFMT_MU_LAW, DSP_DEFAULT_SPEED, DSP_CDEV_TYPE_RDWR },
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{ SND_DEV_DSP16, "dspW", ".", 0, 0, 0,
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AFMT_S16_LE, DSP_DEFAULT_SPEED, DSP_CDEV_TYPE_RDWR },
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{ SND_DEV_DSPHW_PLAY, "dsp", ".p", 1, 1, SND_MAXHWCHAN,
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AFMT_S16_LE | AFMT_STEREO, 48000, DSP_CDEV_TYPE_WRONLY },
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{ SND_DEV_DSPHW_VPLAY, "dsp", ".vp", 1, 1, SND_MAXVCHANS,
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AFMT_S16_LE | AFMT_STEREO, 48000, DSP_CDEV_TYPE_WRONLY },
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{ SND_DEV_DSPHW_REC, "dsp", ".r", 1, 1, SND_MAXHWCHAN,
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AFMT_S16_LE | AFMT_STEREO, 48000, DSP_CDEV_TYPE_RDONLY },
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{ SND_DEV_DSPHW_VREC, "dsp", ".vr", 1, 1, SND_MAXVCHANS,
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AFMT_S16_LE | AFMT_STEREO, 48000, DSP_CDEV_TYPE_RDONLY },
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{ SND_DEV_DSPHW_CD, "dspcd", ".", 0, 0, 0,
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AFMT_S16_LE | AFMT_STEREO, 44100, DSP_CDEV_TYPE_RDWR },
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{ SND_DEV_DSP_MMAP, "dsp_mmap", ".", 0, 0, 0,
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AFMT_S16_LE | AFMT_STEREO, 48000, DSP_CDEV_TYPE_RDWR },
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};
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#define DSP_FIXUP_ERROR() do { \
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prio = dsp_get_flags(i_dev); \
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if (!DSP_F_VALID(flags)) \
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error = EINVAL; \
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if (!DSP_F_DUPLEX(flags) && \
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((DSP_F_READ(flags) && d->reccount == 0) || \
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(DSP_F_WRITE(flags) && d->playcount == 0))) \
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error = ENOTSUP; \
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else if (!DSP_F_DUPLEX(flags) && (prio & SD_F_SIMPLEX) && \
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((DSP_F_READ(flags) && (prio & SD_F_PRIO_WR)) || \
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(DSP_F_WRITE(flags) && (prio & SD_F_PRIO_RD)))) \
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error = EBUSY; \
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else if (DSP_REGISTERED(d, i_dev)) \
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error = EBUSY; \
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} while(0)
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|
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static int
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dsp_open(struct cdev *i_dev, int flags, int mode, struct thread *td)
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{
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struct pcm_channel *rdch, *wrch;
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struct snddev_info *d;
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uint32_t fmt, spd, prio;
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int i, error, rderror, wrerror, devtype, wdevunit, rdevunit;
|
|
|
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/* Kind of impossible.. */
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if (i_dev == NULL || td == NULL)
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return (ENODEV);
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d = dsp_get_info(i_dev);
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if (!PCM_REGISTERED(d))
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return (EBADF);
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PCM_GIANT_ENTER(d);
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|
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/* Lock snddev so nobody else can monkey with it. */
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pcm_lock(d);
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PCM_WAIT(d);
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|
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/*
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* Try to acquire cloned device before someone else pick it.
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* ENODEV means this is not a cloned droids.
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*/
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error = snd_clone_acquire(i_dev);
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if (!(error == 0 || error == ENODEV)) {
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DSP_FIXUP_ERROR();
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pcm_unlock(d);
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PCM_GIANT_EXIT(d);
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return (error);
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}
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error = 0;
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DSP_FIXUP_ERROR();
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|
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if (error != 0) {
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(void)snd_clone_release(i_dev);
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pcm_unlock(d);
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PCM_GIANT_EXIT(d);
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return (error);
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}
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|
|
/*
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|
* That is just enough. Acquire and unlock pcm lock so
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* the other will just have to wait until we finish doing
|
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* everything.
|
|
*/
|
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PCM_ACQUIRE(d);
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pcm_unlock(d);
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|
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devtype = PCMDEV(i_dev);
|
|
wdevunit = -1;
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rdevunit = -1;
|
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fmt = 0;
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spd = 0;
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|
|
for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) {
|
|
if (devtype != dsp_cdevs[i].type)
|
|
continue;
|
|
if (DSP_F_SIMPLEX(flags) &&
|
|
((dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY &&
|
|
DSP_F_READ(flags)) ||
|
|
(dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY &&
|
|
DSP_F_WRITE(flags)))) {
|
|
/*
|
|
* simplex, opposite direction? Please be gone..
|
|
*/
|
|
(void)snd_clone_release(i_dev);
|
|
PCM_RELEASE_QUICK(d);
|
|
PCM_GIANT_EXIT(d);
|
|
return (ENOTSUP);
|
|
}
|
|
if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY)
|
|
wdevunit = dev2unit(i_dev);
|
|
else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY)
|
|
rdevunit = dev2unit(i_dev);
|
|
fmt = dsp_cdevs[i].fmt;
|
|
spd = dsp_cdevs[i].spd;
|
|
break;
|
|
}
|
|
|
|
/* No matching devtype? */
|
|
if (fmt == 0 || spd == 0)
|
|
panic("impossible devtype %d", devtype);
|
|
|
|
rdch = NULL;
|
|
wrch = NULL;
|
|
rderror = 0;
|
|
wrerror = 0;
|
|
|
|
/*
|
|
* if we get here, the open request is valid- either:
|
|
* * we were previously not open
|
|
* * we were open for play xor record and the opener wants
|
|
* the non-open direction
|
|
*/
|
|
if (DSP_F_READ(flags)) {
|
|
/* open for read */
|
|
rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC,
|
|
td->td_proc->p_pid, rdevunit);
|
|
|
|
if (rderror == 0 && (chn_reset(rdch, fmt) != 0 ||
|
|
(chn_setspeed(rdch, spd) != 0)))
|
|
rderror = ENXIO;
|
|
|
|
if (rderror != 0) {
|
|
if (rdch != NULL)
|
|
pcm_chnrelease(rdch);
|
|
if (!DSP_F_DUPLEX(flags)) {
|
|
(void)snd_clone_release(i_dev);
|
|
PCM_RELEASE_QUICK(d);
|
|
PCM_GIANT_EXIT(d);
|
|
return (rderror);
|
|
}
|
|
rdch = NULL;
|
|
} else {
|
|
if (flags & O_NONBLOCK)
|
|
rdch->flags |= CHN_F_NBIO;
|
|
pcm_chnref(rdch, 1);
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
}
|
|
|
|
if (DSP_F_WRITE(flags)) {
|
|
/* open for write */
|
|
wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY,
|
|
td->td_proc->p_pid, wdevunit);
|
|
|
|
if (wrerror == 0 && (chn_reset(wrch, fmt) != 0 ||
|
|
(chn_setspeed(wrch, spd) != 0)))
|
|
wrerror = ENXIO;
|
|
|
|
if (wrerror != 0) {
|
|
if (wrch != NULL)
|
|
pcm_chnrelease(wrch);
|
|
if (!DSP_F_DUPLEX(flags)) {
|
|
if (rdch != NULL) {
|
|
/*
|
|
* Lock, deref and release previously
|
|
* created record channel
|
|
*/
|
|
CHN_LOCK(rdch);
|
|
pcm_chnref(rdch, -1);
|
|
pcm_chnrelease(rdch);
|
|
}
|
|
(void)snd_clone_release(i_dev);
|
|
PCM_RELEASE_QUICK(d);
|
|
PCM_GIANT_EXIT(d);
|
|
return (wrerror);
|
|
}
|
|
wrch = NULL;
|
|
} else {
|
|
if (flags & O_NONBLOCK)
|
|
wrch->flags |= CHN_F_NBIO;
|
|
pcm_chnref(wrch, 1);
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
}
|
|
|
|
if (rdch == NULL && wrch == NULL) {
|
|
(void)snd_clone_release(i_dev);
|
|
PCM_RELEASE_QUICK(d);
|
|
PCM_GIANT_EXIT(d);
|
|
return ((wrerror != 0) ? wrerror : rderror);
|
|
}
|
|
|
|
pcm_lock(d);
|
|
|
|
/*
|
|
* We're done. Allocate channels information for this cdev.
|
|
*/
|
|
dsp_cdevinfo_alloc(i_dev, rdch, wrch);
|
|
|
|
/*
|
|
* Increase clone refcount for its automatic garbage collector.
|
|
*/
|
|
(void)snd_clone_ref(i_dev);
|
|
|
|
PCM_RELEASE(d);
|
|
pcm_unlock(d);
|
|
|
|
PCM_GIANT_LEAVE(d);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
dsp_close(struct cdev *i_dev, int flags, int mode, struct thread *td)
|
|
{
|
|
struct pcm_channel *rdch, *wrch;
|
|
struct snddev_info *d;
|
|
int sg_ids, refs;
|
|
|
|
d = dsp_get_info(i_dev);
|
|
if (!DSP_REGISTERED(d, i_dev))
|
|
return (EBADF);
|
|
|
|
PCM_GIANT_ENTER(d);
|
|
|
|
pcm_lock(d);
|
|
PCM_WAIT(d);
|
|
|
|
rdch = PCM_RDCH(i_dev);
|
|
wrch = PCM_WRCH(i_dev);
|
|
|
|
if (rdch || wrch) {
|
|
PCM_ACQUIRE(d);
|
|
pcm_unlock(d);
|
|
|
|
refs = 0;
|
|
if (rdch) {
|
|
/*
|
|
* The channel itself need not be locked because:
|
|
* a) Adding a channel to a syncgroup happens only in dsp_ioctl(),
|
|
* which cannot run concurrently to dsp_close().
|
|
* b) The syncmember pointer (sm) is protected by the global
|
|
* syncgroup list lock.
|
|
* c) A channel can't just disappear, invalidating pointers,
|
|
* unless it's closed/dereferenced first.
|
|
*/
|
|
PCM_SG_LOCK();
|
|
sg_ids = chn_syncdestroy(rdch);
|
|
PCM_SG_UNLOCK();
|
|
if (sg_ids != 0)
|
|
free_unr(pcmsg_unrhdr, sg_ids);
|
|
|
|
CHN_LOCK(rdch);
|
|
refs += pcm_chnref(rdch, -1);
|
|
chn_abort(rdch); /* won't sleep */
|
|
rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MAPPED | CHN_F_DEAD);
|
|
chn_reset(rdch, 0);
|
|
pcm_chnrelease(rdch);
|
|
PCM_RDCH(i_dev) = NULL;
|
|
}
|
|
if (wrch) {
|
|
/*
|
|
* Please see block above.
|
|
*/
|
|
PCM_SG_LOCK();
|
|
sg_ids = chn_syncdestroy(wrch);
|
|
PCM_SG_UNLOCK();
|
|
if (sg_ids != 0)
|
|
free_unr(pcmsg_unrhdr, sg_ids);
|
|
|
|
CHN_LOCK(wrch);
|
|
refs += pcm_chnref(wrch, -1);
|
|
chn_flush(wrch); /* may sleep */
|
|
wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MAPPED | CHN_F_DEAD);
|
|
chn_reset(wrch, 0);
|
|
pcm_chnrelease(wrch);
|
|
PCM_WRCH(i_dev) = NULL;
|
|
}
|
|
|
|
pcm_lock(d);
|
|
/*
|
|
* If there are no more references, release the channels.
|
|
*/
|
|
if (refs == 0 && PCM_RDCH(i_dev) == NULL &&
|
|
PCM_WRCH(i_dev) == NULL) {
|
|
dsp_cdevinfo_free(i_dev);
|
|
/*
|
|
* Release clone busy state and unref it
|
|
* so the automatic garbage collector will
|
|
* get the hint and do the remaining cleanup
|
|
* process.
|
|
*/
|
|
(void)snd_clone_release(i_dev);
|
|
|
|
/*
|
|
* destroy_dev() might sleep, so release pcm lock
|
|
* here and rely on pcm cv serialization.
|
|
*/
|
|
pcm_unlock(d);
|
|
(void)snd_clone_unref(i_dev);
|
|
pcm_lock(d);
|
|
}
|
|
PCM_RELEASE(d);
|
|
}
|
|
|
|
pcm_unlock(d);
|
|
|
|
PCM_GIANT_LEAVE(d);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline int
|
|
dsp_io_ops(struct cdev *i_dev, struct uio *buf)
|
|
{
|
|
struct snddev_info *d;
|
|
struct pcm_channel **ch, *rdch, *wrch;
|
|
int (*chn_io)(struct pcm_channel *, struct uio *);
|
|
int prio, ret;
|
|
pid_t runpid;
|
|
|
|
KASSERT(i_dev != NULL && buf != NULL &&
|
|
(buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE),
|
|
("%s(): io train wreck!", __func__));
|
|
|
|
d = dsp_get_info(i_dev);
|
|
if (!DSP_REGISTERED(d, i_dev))
|
|
return (EBADF);
|
|
|
|
PCM_GIANT_ENTER(d);
|
|
|
|
switch (buf->uio_rw) {
|
|
case UIO_READ:
|
|
prio = SD_F_PRIO_RD;
|
|
ch = &rdch;
|
|
chn_io = chn_read;
|
|
break;
|
|
case UIO_WRITE:
|
|
prio = SD_F_PRIO_WR;
|
|
ch = &wrch;
|
|
chn_io = chn_write;
|
|
break;
|
|
default:
|
|
panic("invalid/corrupted uio direction: %d", buf->uio_rw);
|
|
break;
|
|
}
|
|
|
|
rdch = NULL;
|
|
wrch = NULL;
|
|
runpid = buf->uio_td->td_proc->p_pid;
|
|
|
|
getchns(i_dev, &rdch, &wrch, prio);
|
|
|
|
if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) {
|
|
PCM_GIANT_EXIT(d);
|
|
return (EBADF);
|
|
}
|
|
|
|
if (((*ch)->flags & (CHN_F_MAPPED | CHN_F_DEAD)) ||
|
|
(((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) {
|
|
relchns(i_dev, rdch, wrch, prio);
|
|
PCM_GIANT_EXIT(d);
|
|
return (EINVAL);
|
|
} else if (!((*ch)->flags & CHN_F_RUNNING)) {
|
|
(*ch)->flags |= CHN_F_RUNNING;
|
|
(*ch)->pid = runpid;
|
|
}
|
|
|
|
/*
|
|
* chn_read/write must give up channel lock in order to copy bytes
|
|
* from/to userland, so up the "in progress" counter to make sure
|
|
* someone else doesn't come along and muss up the buffer.
|
|
*/
|
|
++(*ch)->inprog;
|
|
ret = chn_io(*ch, buf);
|
|
--(*ch)->inprog;
|
|
|
|
CHN_BROADCAST(&(*ch)->cv);
|
|
|
|
relchns(i_dev, rdch, wrch, prio);
|
|
|
|
PCM_GIANT_LEAVE(d);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
dsp_read(struct cdev *i_dev, struct uio *buf, int flag)
|
|
{
|
|
return (dsp_io_ops(i_dev, buf));
|
|
}
|
|
|
|
static int
|
|
dsp_write(struct cdev *i_dev, struct uio *buf, int flag)
|
|
{
|
|
return (dsp_io_ops(i_dev, buf));
|
|
}
|
|
|
|
static int
|
|
dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td)
|
|
{
|
|
struct pcm_channel *chn, *rdch, *wrch;
|
|
struct snddev_info *d;
|
|
int *arg_i, ret, kill, tmp, xcmd;
|
|
|
|
d = dsp_get_info(i_dev);
|
|
if (!DSP_REGISTERED(d, i_dev))
|
|
return (EBADF);
|
|
|
|
PCM_GIANT_ENTER(d);
|
|
|
|
arg_i = (int *)arg;
|
|
ret = 0;
|
|
xcmd = 0;
|
|
|
|
/*
|
|
* this is an evil hack to allow broken apps to perform mixer ioctls
|
|
* on dsp devices.
|
|
*/
|
|
if (IOCGROUP(cmd) == 'M') {
|
|
/*
|
|
* This is at least, a bug to bug compatible with OSS.
|
|
*/
|
|
if (d->mixer_dev != NULL) {
|
|
PCM_ACQUIRE_QUICK(d);
|
|
ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td,
|
|
MIXER_CMD_DIRECT);
|
|
PCM_RELEASE_QUICK(d);
|
|
} else
|
|
ret = EBADF;
|
|
|
|
PCM_GIANT_EXIT(d);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Certain ioctls may be made on any type of device (audio, mixer,
|
|
* and MIDI). Handle those special cases here.
|
|
*/
|
|
if (IOCGROUP(cmd) == 'X') {
|
|
PCM_ACQUIRE_QUICK(d);
|
|
switch(cmd) {
|
|
case SNDCTL_SYSINFO:
|
|
sound_oss_sysinfo((oss_sysinfo *)arg);
|
|
break;
|
|
case SNDCTL_AUDIOINFO:
|
|
ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg);
|
|
break;
|
|
case SNDCTL_MIXERINFO:
|
|
ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg);
|
|
break;
|
|
default:
|
|
ret = EINVAL;
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
PCM_GIANT_EXIT(d);
|
|
return (ret);
|
|
}
|
|
|
|
getchns(i_dev, &rdch, &wrch, 0);
|
|
|
|
kill = 0;
|
|
if (wrch && (wrch->flags & CHN_F_DEAD))
|
|
kill |= 1;
|
|
if (rdch && (rdch->flags & CHN_F_DEAD))
|
|
kill |= 2;
|
|
if (kill == 3) {
|
|
relchns(i_dev, rdch, wrch, 0);
|
|
PCM_GIANT_EXIT(d);
|
|
return (EINVAL);
|
|
}
|
|
if (kill & 1)
|
|
wrch = NULL;
|
|
if (kill & 2)
|
|
rdch = NULL;
|
|
|
|
if (wrch == NULL && rdch == NULL) {
|
|
relchns(i_dev, rdch, wrch, 0);
|
|
PCM_GIANT_EXIT(d);
|
|
return (EINVAL);
|
|
}
|
|
|
|
switch(cmd) {
|
|
#ifdef OLDPCM_IOCTL
|
|
/*
|
|
* we start with the new ioctl interface.
|
|
*/
|
|
case AIONWRITE: /* how many bytes can write ? */
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
/*
|
|
if (wrch && wrch->bufhard.dl)
|
|
while (chn_wrfeed(wrch) == 0);
|
|
*/
|
|
*arg_i = sndbuf_getfree(wrch->bufsoft);
|
|
CHN_UNLOCK(wrch);
|
|
} else {
|
|
*arg_i = 0;
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case AIOSSIZE: /* set the current blocksize */
|
|
{
|
|
struct snd_size *p = (struct snd_size *)arg;
|
|
|
|
p->play_size = 0;
|
|
p->rec_size = 0;
|
|
PCM_ACQUIRE_QUICK(d);
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
chn_setblocksize(wrch, 2, p->play_size);
|
|
p->play_size = sndbuf_getblksz(wrch->bufsoft);
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
chn_setblocksize(rdch, 2, p->rec_size);
|
|
p->rec_size = sndbuf_getblksz(rdch->bufsoft);
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
}
|
|
break;
|
|
case AIOGSIZE: /* get the current blocksize */
|
|
{
|
|
struct snd_size *p = (struct snd_size *)arg;
|
|
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
p->play_size = sndbuf_getblksz(wrch->bufsoft);
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
p->rec_size = sndbuf_getblksz(rdch->bufsoft);
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case AIOSFMT:
|
|
case AIOGFMT:
|
|
{
|
|
snd_chan_param *p = (snd_chan_param *)arg;
|
|
|
|
if (cmd == AIOSFMT &&
|
|
((p->play_format != 0 && p->play_rate == 0) ||
|
|
(p->rec_format != 0 && p->rec_rate == 0))) {
|
|
ret = EINVAL;
|
|
break;
|
|
}
|
|
PCM_ACQUIRE_QUICK(d);
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
if (cmd == AIOSFMT && p->play_format != 0) {
|
|
chn_setformat(wrch, p->play_format);
|
|
chn_setspeed(wrch, p->play_rate);
|
|
}
|
|
p->play_rate = wrch->speed;
|
|
p->play_format = wrch->format;
|
|
CHN_UNLOCK(wrch);
|
|
} else {
|
|
p->play_rate = 0;
|
|
p->play_format = 0;
|
|
}
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
if (cmd == AIOSFMT && p->rec_format != 0) {
|
|
chn_setformat(rdch, p->rec_format);
|
|
chn_setspeed(rdch, p->rec_rate);
|
|
}
|
|
p->rec_rate = rdch->speed;
|
|
p->rec_format = rdch->format;
|
|
CHN_UNLOCK(rdch);
|
|
} else {
|
|
p->rec_rate = 0;
|
|
p->rec_format = 0;
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
}
|
|
break;
|
|
|
|
case AIOGCAP: /* get capabilities */
|
|
{
|
|
snd_capabilities *p = (snd_capabilities *)arg;
|
|
struct pcmchan_caps *pcaps = NULL, *rcaps = NULL;
|
|
struct cdev *pdev;
|
|
|
|
pcm_lock(d);
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
rcaps = chn_getcaps(rdch);
|
|
}
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
pcaps = chn_getcaps(wrch);
|
|
}
|
|
p->rate_min = max(rcaps? rcaps->minspeed : 0,
|
|
pcaps? pcaps->minspeed : 0);
|
|
p->rate_max = min(rcaps? rcaps->maxspeed : 1000000,
|
|
pcaps? pcaps->maxspeed : 1000000);
|
|
p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000,
|
|
wrch? sndbuf_getsize(wrch->bufsoft) : 1000000);
|
|
/* XXX bad on sb16 */
|
|
p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) &
|
|
(wrch? chn_getformats(wrch) : 0xffffffff);
|
|
if (rdch && wrch)
|
|
p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX;
|
|
pdev = d->mixer_dev;
|
|
p->mixers = 1; /* default: one mixer */
|
|
p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0;
|
|
p->left = p->right = 100;
|
|
if (wrch)
|
|
CHN_UNLOCK(wrch);
|
|
if (rdch)
|
|
CHN_UNLOCK(rdch);
|
|
pcm_unlock(d);
|
|
}
|
|
break;
|
|
|
|
case AIOSTOP:
|
|
if (*arg_i == AIOSYNC_PLAY && wrch) {
|
|
CHN_LOCK(wrch);
|
|
*arg_i = chn_abort(wrch);
|
|
CHN_UNLOCK(wrch);
|
|
} else if (*arg_i == AIOSYNC_CAPTURE && rdch) {
|
|
CHN_LOCK(rdch);
|
|
*arg_i = chn_abort(rdch);
|
|
CHN_UNLOCK(rdch);
|
|
} else {
|
|
printf("AIOSTOP: bad channel 0x%x\n", *arg_i);
|
|
*arg_i = 0;
|
|
}
|
|
break;
|
|
|
|
case AIOSYNC:
|
|
printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n",
|
|
((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos);
|
|
break;
|
|
#endif
|
|
/*
|
|
* here follow the standard ioctls (filio.h etc.)
|
|
*/
|
|
case FIONREAD: /* get # bytes to read */
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
/* if (rdch && rdch->bufhard.dl)
|
|
while (chn_rdfeed(rdch) == 0);
|
|
*/
|
|
*arg_i = sndbuf_getready(rdch->bufsoft);
|
|
CHN_UNLOCK(rdch);
|
|
} else {
|
|
*arg_i = 0;
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case FIOASYNC: /*set/clear async i/o */
|
|
DEB( printf("FIOASYNC\n") ; )
|
|
break;
|
|
|
|
case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */
|
|
case FIONBIO: /* set/clear non-blocking i/o */
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i)
|
|
rdch->flags |= CHN_F_NBIO;
|
|
else
|
|
rdch->flags &= ~CHN_F_NBIO;
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i)
|
|
wrch->flags |= CHN_F_NBIO;
|
|
else
|
|
wrch->flags &= ~CHN_F_NBIO;
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
break;
|
|
|
|
/*
|
|
* Finally, here is the linux-compatible ioctl interface
|
|
*/
|
|
#define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int)
|
|
case THE_REAL_SNDCTL_DSP_GETBLKSIZE:
|
|
case SNDCTL_DSP_GETBLKSIZE:
|
|
chn = wrch ? wrch : rdch;
|
|
if (chn) {
|
|
CHN_LOCK(chn);
|
|
*arg_i = sndbuf_getblksz(chn->bufsoft);
|
|
CHN_UNLOCK(chn);
|
|
} else {
|
|
*arg_i = 0;
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_SETBLKSIZE:
|
|
RANGE(*arg_i, 16, 65536);
|
|
PCM_ACQUIRE_QUICK(d);
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
chn_setblocksize(wrch, 2, *arg_i);
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
chn_setblocksize(rdch, 2, *arg_i);
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
break;
|
|
|
|
case SNDCTL_DSP_RESET:
|
|
DEB(printf("dsp reset\n"));
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
chn_abort(wrch);
|
|
chn_resetbuf(wrch);
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
chn_abort(rdch);
|
|
chn_resetbuf(rdch);
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_SYNC:
|
|
DEB(printf("dsp sync\n"));
|
|
/* chn_sync may sleep */
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
chn_sync(wrch, 0);
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_SPEED:
|
|
/* chn_setspeed may sleep */
|
|
tmp = 0;
|
|
PCM_ACQUIRE_QUICK(d);
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
ret = chn_setspeed(wrch, *arg_i);
|
|
tmp = wrch->speed;
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch && ret == 0) {
|
|
CHN_LOCK(rdch);
|
|
ret = chn_setspeed(rdch, *arg_i);
|
|
if (tmp == 0)
|
|
tmp = rdch->speed;
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
*arg_i = tmp;
|
|
break;
|
|
|
|
case SOUND_PCM_READ_RATE:
|
|
chn = wrch ? wrch : rdch;
|
|
if (chn) {
|
|
CHN_LOCK(chn);
|
|
*arg_i = chn->speed;
|
|
CHN_UNLOCK(chn);
|
|
} else {
|
|
*arg_i = 0;
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_STEREO:
|
|
tmp = -1;
|
|
*arg_i = (*arg_i)? AFMT_STEREO : 0;
|
|
PCM_ACQUIRE_QUICK(d);
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | *arg_i);
|
|
tmp = (wrch->format & AFMT_STEREO)? 1 : 0;
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch && ret == 0) {
|
|
CHN_LOCK(rdch);
|
|
ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | *arg_i);
|
|
if (tmp == -1)
|
|
tmp = (rdch->format & AFMT_STEREO)? 1 : 0;
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
*arg_i = tmp;
|
|
break;
|
|
|
|
case SOUND_PCM_WRITE_CHANNELS:
|
|
/* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */
|
|
if (*arg_i != 0) {
|
|
tmp = 0;
|
|
*arg_i = (*arg_i != 1)? AFMT_STEREO : 0;
|
|
PCM_ACQUIRE_QUICK(d);
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | *arg_i);
|
|
tmp = (wrch->format & AFMT_STEREO)? 2 : 1;
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch && ret == 0) {
|
|
CHN_LOCK(rdch);
|
|
ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | *arg_i);
|
|
if (tmp == 0)
|
|
tmp = (rdch->format & AFMT_STEREO)? 2 : 1;
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
*arg_i = tmp;
|
|
} else {
|
|
chn = wrch ? wrch : rdch;
|
|
CHN_LOCK(chn);
|
|
*arg_i = (chn->format & AFMT_STEREO) ? 2 : 1;
|
|
CHN_UNLOCK(chn);
|
|
}
|
|
break;
|
|
|
|
case SOUND_PCM_READ_CHANNELS:
|
|
chn = wrch ? wrch : rdch;
|
|
if (chn) {
|
|
CHN_LOCK(chn);
|
|
*arg_i = (chn->format & AFMT_STEREO) ? 2 : 1;
|
|
CHN_UNLOCK(chn);
|
|
} else {
|
|
*arg_i = 0;
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */
|
|
chn = wrch ? wrch : rdch;
|
|
if (chn) {
|
|
CHN_LOCK(chn);
|
|
*arg_i = chn_getformats(chn);
|
|
CHN_UNLOCK(chn);
|
|
} else {
|
|
*arg_i = 0;
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_SETFMT: /* sets _one_ format */
|
|
if ((*arg_i != AFMT_QUERY)) {
|
|
tmp = 0;
|
|
PCM_ACQUIRE_QUICK(d);
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
ret = chn_setformat(wrch, (*arg_i) | (wrch->format & AFMT_STEREO));
|
|
tmp = wrch->format & ~AFMT_STEREO;
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch && ret == 0) {
|
|
CHN_LOCK(rdch);
|
|
ret = chn_setformat(rdch, (*arg_i) | (rdch->format & AFMT_STEREO));
|
|
if (tmp == 0)
|
|
tmp = rdch->format & ~AFMT_STEREO;
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
*arg_i = tmp;
|
|
} else {
|
|
chn = wrch ? wrch : rdch;
|
|
CHN_LOCK(chn);
|
|
*arg_i = chn->format & ~AFMT_STEREO;
|
|
CHN_UNLOCK(chn);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_SETFRAGMENT:
|
|
DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg));
|
|
{
|
|
uint32_t fragln = (*arg_i) & 0x0000ffff;
|
|
uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16;
|
|
uint32_t fragsz;
|
|
uint32_t r_maxfrags, r_fragsz;
|
|
|
|
RANGE(fragln, 4, 16);
|
|
fragsz = 1 << fragln;
|
|
|
|
if (maxfrags == 0)
|
|
maxfrags = CHN_2NDBUFMAXSIZE / fragsz;
|
|
if (maxfrags < 2)
|
|
maxfrags = 2;
|
|
if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE)
|
|
maxfrags = CHN_2NDBUFMAXSIZE / fragsz;
|
|
|
|
DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz));
|
|
PCM_ACQUIRE_QUICK(d);
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
ret = chn_setblocksize(rdch, maxfrags, fragsz);
|
|
r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft);
|
|
r_fragsz = sndbuf_getblksz(rdch->bufsoft);
|
|
CHN_UNLOCK(rdch);
|
|
} else {
|
|
r_maxfrags = maxfrags;
|
|
r_fragsz = fragsz;
|
|
}
|
|
if (wrch && ret == 0) {
|
|
CHN_LOCK(wrch);
|
|
ret = chn_setblocksize(wrch, maxfrags, fragsz);
|
|
maxfrags = sndbuf_getblkcnt(wrch->bufsoft);
|
|
fragsz = sndbuf_getblksz(wrch->bufsoft);
|
|
CHN_UNLOCK(wrch);
|
|
} else { /* use whatever came from the read channel */
|
|
maxfrags = r_maxfrags;
|
|
fragsz = r_fragsz;
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
|
|
fragln = 0;
|
|
while (fragsz > 1) {
|
|
fragln++;
|
|
fragsz >>= 1;
|
|
}
|
|
*arg_i = (maxfrags << 16) | fragln;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETISPACE:
|
|
/* return the size of data available in the input queue */
|
|
{
|
|
audio_buf_info *a = (audio_buf_info *)arg;
|
|
if (rdch) {
|
|
struct snd_dbuf *bs = rdch->bufsoft;
|
|
|
|
CHN_LOCK(rdch);
|
|
a->bytes = sndbuf_getready(bs);
|
|
a->fragments = a->bytes / sndbuf_getblksz(bs);
|
|
a->fragstotal = sndbuf_getblkcnt(bs);
|
|
a->fragsize = sndbuf_getblksz(bs);
|
|
CHN_UNLOCK(rdch);
|
|
} else
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETOSPACE:
|
|
/* return space available in the output queue */
|
|
{
|
|
audio_buf_info *a = (audio_buf_info *)arg;
|
|
if (wrch) {
|
|
struct snd_dbuf *bs = wrch->bufsoft;
|
|
|
|
CHN_LOCK(wrch);
|
|
/* XXX abusive DMA update: chn_wrupdate(wrch); */
|
|
a->bytes = sndbuf_getfree(bs);
|
|
a->fragments = a->bytes / sndbuf_getblksz(bs);
|
|
a->fragstotal = sndbuf_getblkcnt(bs);
|
|
a->fragsize = sndbuf_getblksz(bs);
|
|
CHN_UNLOCK(wrch);
|
|
} else
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETIPTR:
|
|
{
|
|
count_info *a = (count_info *)arg;
|
|
if (rdch) {
|
|
struct snd_dbuf *bs = rdch->bufsoft;
|
|
|
|
CHN_LOCK(rdch);
|
|
/* XXX abusive DMA update: chn_rdupdate(rdch); */
|
|
a->bytes = sndbuf_gettotal(bs);
|
|
a->blocks = sndbuf_getblocks(bs) - rdch->blocks;
|
|
a->ptr = sndbuf_getreadyptr(bs);
|
|
rdch->blocks = sndbuf_getblocks(bs);
|
|
CHN_UNLOCK(rdch);
|
|
} else
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETOPTR:
|
|
{
|
|
count_info *a = (count_info *)arg;
|
|
if (wrch) {
|
|
struct snd_dbuf *bs = wrch->bufsoft;
|
|
|
|
CHN_LOCK(wrch);
|
|
/* XXX abusive DMA update: chn_wrupdate(wrch); */
|
|
a->bytes = sndbuf_gettotal(bs);
|
|
a->blocks = sndbuf_getblocks(bs) - wrch->blocks;
|
|
a->ptr = sndbuf_getreadyptr(bs);
|
|
wrch->blocks = sndbuf_getblocks(bs);
|
|
CHN_UNLOCK(wrch);
|
|
} else
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETCAPS:
|
|
pcm_lock(d);
|
|
*arg_i = DSP_CAP_REALTIME | DSP_CAP_MMAP | DSP_CAP_TRIGGER;
|
|
if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX))
|
|
*arg_i |= DSP_CAP_DUPLEX;
|
|
pcm_unlock(d);
|
|
break;
|
|
|
|
case SOUND_PCM_READ_BITS:
|
|
chn = wrch ? wrch : rdch;
|
|
if (chn) {
|
|
CHN_LOCK(chn);
|
|
if (chn->format & AFMT_8BIT)
|
|
*arg_i = 8;
|
|
else if (chn->format & AFMT_16BIT)
|
|
*arg_i = 16;
|
|
else if (chn->format & AFMT_24BIT)
|
|
*arg_i = 24;
|
|
else if (chn->format & AFMT_32BIT)
|
|
*arg_i = 32;
|
|
else
|
|
ret = EINVAL;
|
|
CHN_UNLOCK(chn);
|
|
} else {
|
|
*arg_i = 0;
|
|
ret = EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_SETTRIGGER:
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
rdch->flags &= ~CHN_F_NOTRIGGER;
|
|
if (*arg_i & PCM_ENABLE_INPUT)
|
|
chn_start(rdch, 1);
|
|
else {
|
|
chn_abort(rdch);
|
|
chn_resetbuf(rdch);
|
|
rdch->flags |= CHN_F_NOTRIGGER;
|
|
}
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
wrch->flags &= ~CHN_F_NOTRIGGER;
|
|
if (*arg_i & PCM_ENABLE_OUTPUT)
|
|
chn_start(wrch, 1);
|
|
else {
|
|
chn_abort(wrch);
|
|
chn_resetbuf(wrch);
|
|
wrch->flags |= CHN_F_NOTRIGGER;
|
|
}
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETTRIGGER:
|
|
*arg_i = 0;
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
if (wrch->flags & CHN_F_TRIGGERED)
|
|
*arg_i |= PCM_ENABLE_OUTPUT;
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
if (rdch->flags & CHN_F_TRIGGERED)
|
|
*arg_i |= PCM_ENABLE_INPUT;
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETODELAY:
|
|
if (wrch) {
|
|
struct snd_dbuf *bs = wrch->bufsoft;
|
|
|
|
CHN_LOCK(wrch);
|
|
/* XXX abusive DMA update: chn_wrupdate(wrch); */
|
|
*arg_i = sndbuf_getready(bs);
|
|
CHN_UNLOCK(wrch);
|
|
} else
|
|
ret = EINVAL;
|
|
break;
|
|
|
|
case SNDCTL_DSP_POST:
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
wrch->flags &= ~CHN_F_NOTRIGGER;
|
|
chn_start(wrch, 1);
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_SETDUPLEX:
|
|
/*
|
|
* switch to full-duplex mode if card is in half-duplex
|
|
* mode and is able to work in full-duplex mode
|
|
*/
|
|
pcm_lock(d);
|
|
if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX))
|
|
dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX);
|
|
pcm_unlock(d);
|
|
break;
|
|
|
|
/*
|
|
* The following four ioctls are simple wrappers around mixer_ioctl
|
|
* with no further processing. xcmd is short for "translated
|
|
* command".
|
|
*/
|
|
case SNDCTL_DSP_GETRECVOL:
|
|
if (xcmd == 0)
|
|
xcmd = SOUND_MIXER_READ_RECLEV;
|
|
/* FALLTHROUGH */
|
|
case SNDCTL_DSP_SETRECVOL:
|
|
if (xcmd == 0)
|
|
xcmd = SOUND_MIXER_WRITE_RECLEV;
|
|
/* FALLTHROUGH */
|
|
case SNDCTL_DSP_GETPLAYVOL:
|
|
if (xcmd == 0)
|
|
xcmd = SOUND_MIXER_READ_PCM;
|
|
/* FALLTHROUGH */
|
|
case SNDCTL_DSP_SETPLAYVOL:
|
|
if (xcmd == 0)
|
|
xcmd = SOUND_MIXER_WRITE_PCM;
|
|
|
|
if (d->mixer_dev != NULL) {
|
|
PCM_ACQUIRE_QUICK(d);
|
|
ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td,
|
|
MIXER_CMD_DIRECT);
|
|
PCM_RELEASE_QUICK(d);
|
|
} else
|
|
ret = ENOTSUP;
|
|
break;
|
|
|
|
case SNDCTL_DSP_GET_RECSRC_NAMES:
|
|
case SNDCTL_DSP_GET_RECSRC:
|
|
case SNDCTL_DSP_SET_RECSRC:
|
|
if (d->mixer_dev != NULL) {
|
|
PCM_ACQUIRE_QUICK(d);
|
|
ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td,
|
|
MIXER_CMD_DIRECT);
|
|
PCM_RELEASE_QUICK(d);
|
|
} else
|
|
ret = ENOTSUP;
|
|
break;
|
|
|
|
/*
|
|
* The following 3 ioctls aren't very useful at the moment. For
|
|
* now, only a single channel is associated with a cdev (/dev/dspN
|
|
* instance), so there's only a single output routing to use (i.e.,
|
|
* the wrch bound to this cdev).
|
|
*/
|
|
case SNDCTL_DSP_GET_PLAYTGT_NAMES:
|
|
{
|
|
oss_mixer_enuminfo *ei;
|
|
ei = (oss_mixer_enuminfo *)arg;
|
|
ei->dev = 0;
|
|
ei->ctrl = 0;
|
|
ei->version = 0; /* static for now */
|
|
ei->strindex[0] = 0;
|
|
|
|
if (wrch != NULL) {
|
|
ei->nvalues = 1;
|
|
strlcpy(ei->strings, wrch->name,
|
|
sizeof(ei->strings));
|
|
} else {
|
|
ei->nvalues = 0;
|
|
ei->strings[0] = '\0';
|
|
}
|
|
}
|
|
break;
|
|
case SNDCTL_DSP_GET_PLAYTGT:
|
|
case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */
|
|
/*
|
|
* Re: SET_PLAYTGT
|
|
* OSSv4: "The value that was accepted by the device will
|
|
* be returned back in the variable pointed by the
|
|
* argument."
|
|
*/
|
|
if (wrch != NULL)
|
|
*arg_i = 0;
|
|
else
|
|
ret = EINVAL;
|
|
break;
|
|
|
|
case SNDCTL_DSP_SILENCE:
|
|
/*
|
|
* Flush the software (pre-feed) buffer, but try to minimize playback
|
|
* interruption. (I.e., record unplayed samples with intent to
|
|
* restore by SNDCTL_DSP_SKIP.) Intended for application "pause"
|
|
* functionality.
|
|
*/
|
|
if (wrch == NULL)
|
|
ret = EINVAL;
|
|
else {
|
|
struct snd_dbuf *bs;
|
|
CHN_LOCK(wrch);
|
|
while (wrch->inprog != 0)
|
|
cv_wait(&wrch->cv, wrch->lock);
|
|
bs = wrch->bufsoft;
|
|
if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) {
|
|
bs->sl = sndbuf_getready(bs);
|
|
sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs));
|
|
sndbuf_fillsilence(bs);
|
|
chn_start(wrch, 0);
|
|
}
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_SKIP:
|
|
/*
|
|
* OSSv4 docs: "This ioctl call discards all unplayed samples in the
|
|
* playback buffer by moving the current write position immediately
|
|
* before the point where the device is currently reading the samples."
|
|
*/
|
|
if (wrch == NULL)
|
|
ret = EINVAL;
|
|
else {
|
|
struct snd_dbuf *bs;
|
|
CHN_LOCK(wrch);
|
|
while (wrch->inprog != 0)
|
|
cv_wait(&wrch->cv, wrch->lock);
|
|
bs = wrch->bufsoft;
|
|
if ((bs->shadbuf != NULL) && (bs->sl > 0)) {
|
|
sndbuf_softreset(bs);
|
|
sndbuf_acquire(bs, bs->shadbuf, bs->sl);
|
|
bs->sl = 0;
|
|
chn_start(wrch, 0);
|
|
}
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_CURRENT_OPTR:
|
|
case SNDCTL_DSP_CURRENT_IPTR:
|
|
/**
|
|
* @note Changing formats resets the buffer counters, which differs
|
|
* from the 4Front drivers. However, I don't expect this to be
|
|
* much of a problem.
|
|
*
|
|
* @note In a test where @c CURRENT_OPTR is called immediately after write
|
|
* returns, this driver is about 32K samples behind whereas
|
|
* 4Front's is about 8K samples behind. Should determine source
|
|
* of discrepancy, even if only out of curiosity.
|
|
*
|
|
* @todo Actually test SNDCTL_DSP_CURRENT_IPTR.
|
|
*/
|
|
chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch;
|
|
if (chn == NULL)
|
|
ret = EINVAL;
|
|
else {
|
|
struct snd_dbuf *bs;
|
|
/* int tmp; */
|
|
|
|
oss_count_t *oc = (oss_count_t *)arg;
|
|
|
|
CHN_LOCK(chn);
|
|
bs = chn->bufsoft;
|
|
#if 0
|
|
tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b);
|
|
oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getbps(b);
|
|
oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getbps(b);
|
|
#else
|
|
oc->samples = sndbuf_gettotal(bs) / sndbuf_getbps(bs);
|
|
oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getbps(bs);
|
|
#endif
|
|
CHN_UNLOCK(chn);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_HALT_OUTPUT:
|
|
case SNDCTL_DSP_HALT_INPUT:
|
|
chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch;
|
|
if (chn == NULL)
|
|
ret = EINVAL;
|
|
else {
|
|
CHN_LOCK(chn);
|
|
chn_abort(chn);
|
|
CHN_UNLOCK(chn);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_LOW_WATER:
|
|
/*
|
|
* Set the number of bytes required to attract attention by
|
|
* select/poll.
|
|
*/
|
|
if (wrch != NULL) {
|
|
CHN_LOCK(wrch);
|
|
wrch->lw = (*arg_i > 1) ? *arg_i : 1;
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch != NULL) {
|
|
CHN_LOCK(rdch);
|
|
rdch->lw = (*arg_i > 1) ? *arg_i : 1;
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETERROR:
|
|
/*
|
|
* OSSv4 docs: "All errors and counters will automatically be
|
|
* cleared to zeroes after the call so each call will return only
|
|
* the errors that occurred after the previous invocation. ... The
|
|
* play_underruns and rec_overrun fields are the only usefull fields
|
|
* returned by OSS 4.0."
|
|
*/
|
|
{
|
|
audio_errinfo *ei = (audio_errinfo *)arg;
|
|
|
|
bzero((void *)ei, sizeof(*ei));
|
|
|
|
if (wrch != NULL) {
|
|
CHN_LOCK(wrch);
|
|
ei->play_underruns = wrch->xruns;
|
|
wrch->xruns = 0;
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
if (rdch != NULL) {
|
|
CHN_LOCK(rdch);
|
|
ei->rec_overruns = rdch->xruns;
|
|
rdch->xruns = 0;
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_SYNCGROUP:
|
|
PCM_ACQUIRE_QUICK(d);
|
|
ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg);
|
|
PCM_RELEASE_QUICK(d);
|
|
break;
|
|
|
|
case SNDCTL_DSP_SYNCSTART:
|
|
PCM_ACQUIRE_QUICK(d);
|
|
ret = dsp_oss_syncstart(*arg_i);
|
|
PCM_RELEASE_QUICK(d);
|
|
break;
|
|
|
|
case SNDCTL_DSP_POLICY:
|
|
PCM_ACQUIRE_QUICK(d);
|
|
ret = dsp_oss_policy(wrch, rdch, *arg_i);
|
|
PCM_RELEASE_QUICK(d);
|
|
break;
|
|
|
|
#ifdef OSSV4_EXPERIMENT
|
|
/*
|
|
* XXX The following ioctls are not yet supported and just return
|
|
* EINVAL.
|
|
*/
|
|
case SNDCTL_DSP_GETOPEAKS:
|
|
case SNDCTL_DSP_GETIPEAKS:
|
|
chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch;
|
|
if (chn == NULL)
|
|
ret = EINVAL;
|
|
else {
|
|
oss_peaks_t *op = (oss_peaks_t *)arg;
|
|
int lpeak, rpeak;
|
|
|
|
CHN_LOCK(chn);
|
|
ret = chn_getpeaks(chn, &lpeak, &rpeak);
|
|
if (ret == -1)
|
|
ret = EINVAL;
|
|
else {
|
|
(*op)[0] = lpeak;
|
|
(*op)[1] = rpeak;
|
|
}
|
|
CHN_UNLOCK(chn);
|
|
}
|
|
break;
|
|
|
|
/*
|
|
* XXX Once implemented, revisit this for proper cv protection
|
|
* (if necessary).
|
|
*/
|
|
case SNDCTL_DSP_COOKEDMODE:
|
|
ret = dsp_oss_cookedmode(wrch, rdch, *arg_i);
|
|
break;
|
|
case SNDCTL_DSP_GET_CHNORDER:
|
|
ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg);
|
|
break;
|
|
case SNDCTL_DSP_SET_CHNORDER:
|
|
ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg);
|
|
break;
|
|
case SNDCTL_GETLABEL:
|
|
ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg);
|
|
break;
|
|
case SNDCTL_SETLABEL:
|
|
ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg);
|
|
break;
|
|
case SNDCTL_GETSONG:
|
|
ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg);
|
|
break;
|
|
case SNDCTL_SETSONG:
|
|
ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg);
|
|
break;
|
|
case SNDCTL_SETNAME:
|
|
ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg);
|
|
break;
|
|
#if 0
|
|
/**
|
|
* @note The SNDCTL_CARDINFO ioctl was omitted per 4Front developer
|
|
* documentation. "The usability of this call is very limited. It's
|
|
* provided only for completeness of the API. OSS API doesn't have
|
|
* any concept of card. Any information returned by this ioctl calld
|
|
* is reserved exclusively for the utility programs included in the
|
|
* OSS package. Applications should not try to use for this
|
|
* information in any ways."
|
|
*/
|
|
case SNDCTL_CARDINFO:
|
|
ret = EINVAL;
|
|
break;
|
|
/**
|
|
* @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and
|
|
* @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of
|
|
* 4Front Technologies.
|
|
*/
|
|
case SNDCTL_DSP_READCTL:
|
|
case SNDCTL_DSP_WRITECTL:
|
|
ret = EINVAL;
|
|
break;
|
|
#endif /* !0 (explicitly omitted ioctls) */
|
|
|
|
#endif /* !OSSV4_EXPERIMENT */
|
|
case SNDCTL_DSP_MAPINBUF:
|
|
case SNDCTL_DSP_MAPOUTBUF:
|
|
case SNDCTL_DSP_SETSYNCRO:
|
|
/* undocumented */
|
|
|
|
case SNDCTL_DSP_SUBDIVIDE:
|
|
case SOUND_PCM_WRITE_FILTER:
|
|
case SOUND_PCM_READ_FILTER:
|
|
/* dunno what these do, don't sound important */
|
|
|
|
default:
|
|
DEB(printf("default ioctl fn 0x%08lx fail\n", cmd));
|
|
ret = EINVAL;
|
|
break;
|
|
}
|
|
|
|
relchns(i_dev, rdch, wrch, 0);
|
|
|
|
PCM_GIANT_LEAVE(d);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
dsp_poll(struct cdev *i_dev, int events, struct thread *td)
|
|
{
|
|
struct snddev_info *d;
|
|
struct pcm_channel *wrch, *rdch;
|
|
int ret, e;
|
|
|
|
d = dsp_get_info(i_dev);
|
|
if (!DSP_REGISTERED(d, i_dev))
|
|
return (EBADF);
|
|
|
|
PCM_GIANT_ENTER(d);
|
|
|
|
wrch = NULL;
|
|
rdch = NULL;
|
|
ret = 0;
|
|
|
|
getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
|
|
|
|
if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) {
|
|
e = (events & (POLLOUT | POLLWRNORM));
|
|
if (e)
|
|
ret |= chn_poll(wrch, e, td);
|
|
}
|
|
|
|
if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) {
|
|
e = (events & (POLLIN | POLLRDNORM));
|
|
if (e)
|
|
ret |= chn_poll(rdch, e, td);
|
|
}
|
|
|
|
relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
|
|
|
|
PCM_GIANT_LEAVE(d);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
dsp_mmap(struct cdev *i_dev, vm_offset_t offset, vm_paddr_t *paddr, int nprot)
|
|
{
|
|
struct snddev_info *d;
|
|
struct pcm_channel *wrch, *rdch, *c;
|
|
|
|
/*
|
|
* Reject PROT_EXEC by default. It just doesn't makes sense.
|
|
* Unfortunately, we have to give up this one due to linux_mmap
|
|
* changes.
|
|
*
|
|
* http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html
|
|
*
|
|
*/
|
|
if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec == 0)
|
|
return (-1);
|
|
|
|
d = dsp_get_info(i_dev);
|
|
if (!DSP_REGISTERED(d, i_dev))
|
|
return (-1);
|
|
|
|
PCM_GIANT_ENTER(d);
|
|
|
|
getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
|
|
|
|
/*
|
|
* XXX The linux api uses the nprot to select read/write buffer
|
|
* our vm system doesn't allow this, so force write buffer.
|
|
*
|
|
* This is just a quack to fool full-duplex mmap, so that at
|
|
* least playback _or_ recording works. If you really got the
|
|
* urge to make _both_ work at the same time, avoid O_RDWR.
|
|
* Just open each direction separately and mmap() it.
|
|
*
|
|
* Failure is not an option due to INVARIANTS check within
|
|
* device_pager.c, which means, we have to give up one over
|
|
* another.
|
|
*/
|
|
c = (wrch != NULL) ? wrch : rdch;
|
|
|
|
if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) ||
|
|
offset >= sndbuf_getsize(c->bufsoft) ||
|
|
(wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) ||
|
|
(rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) {
|
|
relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
|
|
PCM_GIANT_EXIT(d);
|
|
return (-1);
|
|
}
|
|
|
|
/* XXX full-duplex quack. */
|
|
if (wrch != NULL)
|
|
wrch->flags |= CHN_F_MAPPED;
|
|
if (rdch != NULL)
|
|
rdch->flags |= CHN_F_MAPPED;
|
|
|
|
*paddr = vtophys(sndbuf_getbufofs(c->bufsoft, offset));
|
|
relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);
|
|
|
|
PCM_GIANT_LEAVE(d);
|
|
|
|
return (0);
|
|
}
|
|
|
|
#ifdef USING_DEVFS
|
|
|
|
/* So much for dev_stdclone() */
|
|
static int
|
|
dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c)
|
|
{
|
|
size_t len;
|
|
|
|
len = strlen(namep);
|
|
|
|
if (bcmp(name, namep, len) != 0)
|
|
return (ENODEV);
|
|
|
|
name += len;
|
|
|
|
if (isdigit(*name) == 0)
|
|
return (ENODEV);
|
|
|
|
len = strlen(sep);
|
|
|
|
if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0))
|
|
return (ENODEV);
|
|
|
|
for (*u = 0; isdigit(*name) != 0; name++) {
|
|
*u *= 10;
|
|
*u += *name - '0';
|
|
if (*u > dsp_umax)
|
|
return (ENODEV);
|
|
}
|
|
|
|
if (*name == '\0')
|
|
return ((use_sep == 0) ? 0 : ENODEV);
|
|
|
|
if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0)
|
|
return (ENODEV);
|
|
|
|
name += len;
|
|
|
|
if (*name == '0' && name[1] != '\0')
|
|
return (ENODEV);
|
|
|
|
for (*c = 0; isdigit(*name) != 0; name++) {
|
|
*c *= 10;
|
|
*c += *name - '0';
|
|
if (*c > dsp_cmax)
|
|
return (ENODEV);
|
|
}
|
|
|
|
if (*name != '\0')
|
|
return (ENODEV);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
dsp_clone(void *arg,
|
|
#if __FreeBSD_version >= 600034
|
|
struct ucred *cred,
|
|
#endif
|
|
char *name, int namelen, struct cdev **dev)
|
|
{
|
|
struct snddev_info *d;
|
|
struct snd_clone_entry *ce;
|
|
struct pcm_channel *c;
|
|
int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax;
|
|
char *devname, *devsep;
|
|
|
|
KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!"));
|
|
|
|
if (*dev != NULL)
|
|
return;
|
|
|
|
unit = -1;
|
|
cunit = -1;
|
|
devtype = -1;
|
|
devhw = 0;
|
|
devcmax = -1;
|
|
tumax = -1;
|
|
devname = NULL;
|
|
devsep = NULL;
|
|
|
|
for (i = 0; unit == -1 &&
|
|
i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) {
|
|
devtype = dsp_cdevs[i].type;
|
|
devname = dsp_cdevs[i].name;
|
|
devsep = dsp_cdevs[i].sep;
|
|
devhw = dsp_cdevs[i].hw;
|
|
devcmax = dsp_cdevs[i].max - 1;
|
|
if (strcmp(name, devname) == 0)
|
|
unit = snd_unit;
|
|
else if (dsp_stdclone(name, devname, devsep,
|
|
dsp_cdevs[i].use_sep, &unit, &cunit) != 0) {
|
|
unit = -1;
|
|
cunit = -1;
|
|
}
|
|
}
|
|
|
|
d = devclass_get_softc(pcm_devclass, unit);
|
|
if (!PCM_REGISTERED(d) || d->clones == NULL)
|
|
return;
|
|
|
|
/* XXX Need Giant magic entry ??? */
|
|
|
|
pcm_lock(d);
|
|
if (snd_clone_disabled(d->clones)) {
|
|
pcm_unlock(d);
|
|
return;
|
|
}
|
|
|
|
PCM_WAIT(d);
|
|
PCM_ACQUIRE(d);
|
|
pcm_unlock(d);
|
|
|
|
udcmask = snd_u2unit(unit) | snd_d2unit(devtype);
|
|
|
|
if (devhw != 0) {
|
|
KASSERT(devcmax <= dsp_cmax,
|
|
("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax));
|
|
if (cunit > devcmax) {
|
|
PCM_RELEASE_QUICK(d);
|
|
return;
|
|
}
|
|
udcmask |= snd_c2unit(cunit);
|
|
CHN_FOREACH(c, d, channels.pcm) {
|
|
CHN_LOCK(c);
|
|
if (c->unit != udcmask) {
|
|
CHN_UNLOCK(c);
|
|
continue;
|
|
}
|
|
CHN_UNLOCK(c);
|
|
udcmask &= ~snd_c2unit(cunit);
|
|
/*
|
|
* Temporarily increase clone maxunit to overcome
|
|
* vchan flexibility.
|
|
*
|
|
* # sysctl dev.pcm.0.play.vchans=256
|
|
* dev.pcm.0.play.vchans: 1 -> 256
|
|
* # cat /dev/zero > /dev/dsp0.vp255 &
|
|
* [1] 17296
|
|
* # sysctl dev.pcm.0.play.vchans=0
|
|
* dev.pcm.0.play.vchans: 256 -> 1
|
|
* # fg
|
|
* [1] + running cat /dev/zero > /dev/dsp0.vp255
|
|
* ^C
|
|
* # cat /dev/zero > /dev/dsp0.vp255
|
|
* zsh: operation not supported: /dev/dsp0.vp255
|
|
*/
|
|
tumax = snd_clone_getmaxunit(d->clones);
|
|
if (cunit > tumax)
|
|
snd_clone_setmaxunit(d->clones, cunit);
|
|
else
|
|
tumax = -1;
|
|
goto dsp_clone_alloc;
|
|
}
|
|
/*
|
|
* Ok, so we're requesting unallocated vchan, but still
|
|
* within maximum vchan limit.
|
|
*/
|
|
if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) ||
|
|
(devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) &&
|
|
cunit < snd_maxautovchans) {
|
|
udcmask &= ~snd_c2unit(cunit);
|
|
tumax = snd_clone_getmaxunit(d->clones);
|
|
if (cunit > tumax)
|
|
snd_clone_setmaxunit(d->clones, cunit);
|
|
else
|
|
tumax = -1;
|
|
goto dsp_clone_alloc;
|
|
}
|
|
PCM_RELEASE_QUICK(d);
|
|
return;
|
|
}
|
|
|
|
dsp_clone_alloc:
|
|
ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask);
|
|
if (tumax != -1)
|
|
snd_clone_setmaxunit(d->clones, tumax);
|
|
if (ce != NULL) {
|
|
udcmask |= snd_c2unit(cunit);
|
|
*dev = make_dev(&dsp_cdevsw, unit2minor(udcmask),
|
|
UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d",
|
|
devname, unit, devsep, cunit);
|
|
snd_clone_register(ce, *dev);
|
|
}
|
|
|
|
PCM_RELEASE_QUICK(d);
|
|
|
|
if (*dev != NULL)
|
|
dev_ref(*dev);
|
|
}
|
|
|
|
static void
|
|
dsp_sysinit(void *p)
|
|
{
|
|
if (dsp_ehtag != NULL)
|
|
return;
|
|
/* initialize unit numbering */
|
|
snd_unit_init();
|
|
dsp_umax = PCMMAXUNIT;
|
|
dsp_cmax = PCMMAXCHAN;
|
|
dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000);
|
|
}
|
|
|
|
static void
|
|
dsp_sysuninit(void *p)
|
|
{
|
|
if (dsp_ehtag == NULL)
|
|
return;
|
|
EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag);
|
|
dsp_ehtag = NULL;
|
|
}
|
|
|
|
SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL);
|
|
SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL);
|
|
#endif
|
|
|
|
char *
|
|
dsp_unit2name(char *buf, size_t len, int unit)
|
|
{
|
|
int i, dtype;
|
|
|
|
KASSERT(buf != NULL && len != 0,
|
|
("bogus buf=%p len=%ju", buf, (uintmax_t)len));
|
|
|
|
dtype = snd_unit2d(unit);
|
|
|
|
for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) {
|
|
if (dtype != dsp_cdevs[i].type)
|
|
continue;
|
|
snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name,
|
|
snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit));
|
|
return (buf);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/**
|
|
* @brief Handler for SNDCTL_AUDIOINFO.
|
|
*
|
|
* Gathers information about the audio device specified in ai->dev. If
|
|
* ai->dev == -1, then this function gathers information about the current
|
|
* device. If the call comes in on a non-audio device and ai->dev == -1,
|
|
* return EINVAL.
|
|
*
|
|
* This routine is supposed to go practically straight to the hardware,
|
|
* getting capabilities directly from the sound card driver, side-stepping
|
|
* the intermediate channel interface.
|
|
*
|
|
* Note, however, that the usefulness of this command is significantly
|
|
* decreased when requesting info about any device other than the one serving
|
|
* the request. While each snddev_channel refers to a specific device node,
|
|
* the converse is *not* true. Currently, when a sound device node is opened,
|
|
* the sound subsystem scans for an available audio channel (or channels, if
|
|
* opened in read+write) and then assigns them to the si_drv[12] private
|
|
* data fields. As a result, any information returned linking a channel to
|
|
* a specific character device isn't necessarily accurate.
|
|
*
|
|
* @note
|
|
* Calling threads must not hold any snddev_info or pcm_channel locks.
|
|
*
|
|
* @param dev device on which the ioctl was issued
|
|
* @param ai ioctl request data container
|
|
*
|
|
* @retval 0 success
|
|
* @retval EINVAL ai->dev specifies an invalid device
|
|
*
|
|
* @todo Verify correctness of Doxygen tags. ;)
|
|
*/
|
|
int
|
|
dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai)
|
|
{
|
|
struct pcmchan_caps *caps;
|
|
struct pcm_channel *ch;
|
|
struct snddev_info *d;
|
|
uint32_t fmts;
|
|
int i, nchan, *rates, minch, maxch;
|
|
char *devname, buf[CHN_NAMELEN];
|
|
|
|
/*
|
|
* If probing the device that received the ioctl, make sure it's a
|
|
* DSP device. (Users may use this ioctl with /dev/mixer and
|
|
* /dev/midi.)
|
|
*/
|
|
if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw)
|
|
return (EINVAL);
|
|
|
|
ch = NULL;
|
|
devname = NULL;
|
|
nchan = 0;
|
|
bzero(buf, sizeof(buf));
|
|
|
|
/*
|
|
* Search for the requested audio device (channel). Start by
|
|
* iterating over pcm devices.
|
|
*/
|
|
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;
|
|
|
|
/* XXX Need Giant magic entry ??? */
|
|
|
|
/* See the note in function docblock */
|
|
mtx_assert(d->lock, MA_NOTOWNED);
|
|
pcm_lock(d);
|
|
|
|
CHN_FOREACH(ch, d, channels.pcm) {
|
|
mtx_assert(ch->lock, MA_NOTOWNED);
|
|
CHN_LOCK(ch);
|
|
if (ai->dev == -1) {
|
|
if (DSP_REGISTERED(d, i_dev) &&
|
|
(ch == PCM_RDCH(i_dev) || /* record ch */
|
|
ch == PCM_WRCH(i_dev))) { /* playback ch */
|
|
devname = dsp_unit2name(buf,
|
|
sizeof(buf), ch->unit);
|
|
}
|
|
} else if (ai->dev == nchan) {
|
|
devname = dsp_unit2name(buf, sizeof(buf),
|
|
ch->unit);
|
|
}
|
|
if (devname != NULL)
|
|
break;
|
|
CHN_UNLOCK(ch);
|
|
++nchan;
|
|
}
|
|
|
|
if (devname != NULL) {
|
|
/*
|
|
* At this point, the following synchronization stuff
|
|
* has happened:
|
|
* - a specific PCM device is locked.
|
|
* - a specific audio channel has been locked, so be
|
|
* sure to unlock when exiting;
|
|
*/
|
|
|
|
caps = chn_getcaps(ch);
|
|
|
|
/*
|
|
* With all handles collected, zero out the user's
|
|
* container and begin filling in its fields.
|
|
*/
|
|
bzero((void *)ai, sizeof(oss_audioinfo));
|
|
|
|
ai->dev = nchan;
|
|
strlcpy(ai->name, ch->name, sizeof(ai->name));
|
|
|
|
if ((ch->flags & CHN_F_BUSY) == 0)
|
|
ai->busy = 0;
|
|
else
|
|
ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ;
|
|
|
|
/**
|
|
* @note
|
|
* @c cmd - OSSv4 docs: "Only supported under Linux at
|
|
* this moment." Cop-out, I know, but I'll save
|
|
* running around in the process table for later.
|
|
* Is there a risk of leaking information?
|
|
*/
|
|
ai->pid = ch->pid;
|
|
|
|
/*
|
|
* These flags stolen from SNDCTL_DSP_GETCAPS handler.
|
|
* Note, however, that a single channel operates in
|
|
* only one direction, so DSP_CAP_DUPLEX is out.
|
|
*/
|
|
/**
|
|
* @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep
|
|
* these in pcmchan::caps?
|
|
*/
|
|
ai->caps = DSP_CAP_REALTIME | DSP_CAP_MMAP | DSP_CAP_TRIGGER;
|
|
|
|
/*
|
|
* Collect formats supported @b natively by the
|
|
* device. Also determine min/max channels. (I.e.,
|
|
* mono, stereo, or both?)
|
|
*
|
|
* If any channel is stereo, maxch = 2;
|
|
* if all channels are stereo, minch = 2, too;
|
|
* if any channel is mono, minch = 1;
|
|
* and if all channels are mono, maxch = 1.
|
|
*/
|
|
minch = 0;
|
|
maxch = 0;
|
|
fmts = 0;
|
|
for (i = 0; caps->fmtlist[i]; i++) {
|
|
fmts |= caps->fmtlist[i];
|
|
if (caps->fmtlist[i] & AFMT_STEREO) {
|
|
minch = (minch == 0) ? 2 : minch;
|
|
maxch = 2;
|
|
} else {
|
|
minch = 1;
|
|
maxch = (maxch == 0) ? 1 : maxch;
|
|
}
|
|
}
|
|
|
|
if (ch->direction == PCMDIR_PLAY)
|
|
ai->oformats = fmts;
|
|
else
|
|
ai->iformats = fmts;
|
|
|
|
/**
|
|
* @note
|
|
* @c magic - OSSv4 docs: "Reserved for internal use
|
|
* by OSS."
|
|
*
|
|
* @par
|
|
* @c card_number - OSSv4 docs: "Number of the sound
|
|
* card where this device belongs or -1 if this
|
|
* information is not available. Applications
|
|
* should normally not use this field for any
|
|
* purpose."
|
|
*/
|
|
ai->card_number = -1;
|
|
/**
|
|
* @todo @c song_name - depends first on
|
|
* SNDCTL_[GS]ETSONG @todo @c label - depends
|
|
* on SNDCTL_[GS]ETLABEL
|
|
* @todo @c port_number - routing information?
|
|
*/
|
|
ai->port_number = -1;
|
|
ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1;
|
|
/**
|
|
* @note
|
|
* @c real_device - OSSv4 docs: "Obsolete."
|
|
*/
|
|
ai->real_device = -1;
|
|
strlcpy(ai->devnode, devname, sizeof(ai->devnode));
|
|
ai->enabled = device_is_attached(d->dev) ? 1 : 0;
|
|
/**
|
|
* @note
|
|
* @c flags - OSSv4 docs: "Reserved for future use."
|
|
*
|
|
* @note
|
|
* @c binding - OSSv4 docs: "Reserved for future use."
|
|
*
|
|
* @todo @c handle - haven't decided how to generate
|
|
* this yet; bus, vendor, device IDs?
|
|
*/
|
|
ai->min_rate = caps->minspeed;
|
|
ai->max_rate = caps->maxspeed;
|
|
|
|
ai->min_channels = minch;
|
|
ai->max_channels = maxch;
|
|
|
|
ai->nrates = chn_getrates(ch, &rates);
|
|
if (ai->nrates > OSS_MAX_SAMPLE_RATES)
|
|
ai->nrates = OSS_MAX_SAMPLE_RATES;
|
|
|
|
for (i = 0; i < ai->nrates; i++)
|
|
ai->rates[i] = rates[i];
|
|
|
|
CHN_UNLOCK(ch);
|
|
}
|
|
|
|
pcm_unlock(d);
|
|
|
|
if (devname != NULL)
|
|
return (0);
|
|
}
|
|
|
|
/* Exhausted the search -- nothing is locked, so return. */
|
|
return (EINVAL);
|
|
}
|
|
|
|
/**
|
|
* @brief Assigns a PCM channel to a sync group.
|
|
*
|
|
* Sync groups are used to enable audio operations on multiple devices
|
|
* simultaneously. They may be used with any number of devices and may
|
|
* span across applications. Devices are added to groups with
|
|
* the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the
|
|
* SNDCTL_DSP_SYNCSTART ioctl.
|
|
*
|
|
* If the @c id field of the @c group parameter is set to zero, then a new
|
|
* sync group is created. Otherwise, wrch and rdch (if set) are added to
|
|
* the group specified.
|
|
*
|
|
* @todo As far as memory allocation, should we assume that things are
|
|
* okay and allocate with M_WAITOK before acquiring channel locks,
|
|
* freeing later if not?
|
|
*
|
|
* @param wrch output channel associated w/ device (if any)
|
|
* @param rdch input channel associated w/ device (if any)
|
|
* @param group Sync group parameters
|
|
*
|
|
* @retval 0 success
|
|
* @retval non-zero error to be propagated upstream
|
|
*/
|
|
static int
|
|
dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group)
|
|
{
|
|
struct pcmchan_syncmember *smrd, *smwr;
|
|
struct pcmchan_syncgroup *sg;
|
|
int ret, sg_ids[3];
|
|
|
|
smrd = NULL;
|
|
smwr = NULL;
|
|
sg = NULL;
|
|
ret = 0;
|
|
|
|
/*
|
|
* Free_unr() may sleep, so store released syncgroup IDs until after
|
|
* all locks are released.
|
|
*/
|
|
sg_ids[0] = sg_ids[1] = sg_ids[2] = 0;
|
|
|
|
PCM_SG_LOCK();
|
|
|
|
/*
|
|
* - Insert channel(s) into group's member list.
|
|
* - Set CHN_F_NOTRIGGER on channel(s).
|
|
* - Stop channel(s).
|
|
*/
|
|
|
|
/*
|
|
* If device's channels are already mapped to a group, unmap them.
|
|
*/
|
|
if (wrch) {
|
|
CHN_LOCK(wrch);
|
|
sg_ids[0] = chn_syncdestroy(wrch);
|
|
}
|
|
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
sg_ids[1] = chn_syncdestroy(rdch);
|
|
}
|
|
|
|
/*
|
|
* Verify that mode matches character device properites.
|
|
* - Bail if PCM_ENABLE_OUTPUT && wrch == NULL.
|
|
* - Bail if PCM_ENABLE_INPUT && rdch == NULL.
|
|
*/
|
|
if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) ||
|
|
((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) {
|
|
ret = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* An id of zero indicates the user wants to create a new
|
|
* syncgroup.
|
|
*/
|
|
if (group->id == 0) {
|
|
sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT);
|
|
if (sg != NULL) {
|
|
SLIST_INIT(&sg->members);
|
|
sg->id = alloc_unr(pcmsg_unrhdr);
|
|
|
|
group->id = sg->id;
|
|
SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link);
|
|
} else
|
|
ret = ENOMEM;
|
|
} else {
|
|
SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) {
|
|
if (sg->id == group->id)
|
|
break;
|
|
}
|
|
if (sg == NULL)
|
|
ret = EINVAL;
|
|
}
|
|
|
|
/* Couldn't create or find a syncgroup. Fail. */
|
|
if (sg == NULL)
|
|
goto out;
|
|
|
|
/*
|
|
* Allocate a syncmember, assign it and a channel together, and
|
|
* insert into syncgroup.
|
|
*/
|
|
if (group->mode & PCM_ENABLE_INPUT) {
|
|
smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT);
|
|
if (smrd == NULL) {
|
|
ret = ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
SLIST_INSERT_HEAD(&sg->members, smrd, link);
|
|
smrd->parent = sg;
|
|
smrd->ch = rdch;
|
|
|
|
chn_abort(rdch);
|
|
rdch->flags |= CHN_F_NOTRIGGER;
|
|
rdch->sm = smrd;
|
|
}
|
|
|
|
if (group->mode & PCM_ENABLE_OUTPUT) {
|
|
smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT);
|
|
if (smwr == NULL) {
|
|
ret = ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
SLIST_INSERT_HEAD(&sg->members, smwr, link);
|
|
smwr->parent = sg;
|
|
smwr->ch = wrch;
|
|
|
|
chn_abort(wrch);
|
|
wrch->flags |= CHN_F_NOTRIGGER;
|
|
wrch->sm = smwr;
|
|
}
|
|
|
|
|
|
out:
|
|
if (ret != 0) {
|
|
if (smrd != NULL)
|
|
free(smrd, M_DEVBUF);
|
|
if ((sg != NULL) && SLIST_EMPTY(&sg->members)) {
|
|
sg_ids[2] = sg->id;
|
|
SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link);
|
|
free(sg, M_DEVBUF);
|
|
}
|
|
|
|
if (wrch)
|
|
wrch->sm = NULL;
|
|
if (rdch)
|
|
rdch->sm = NULL;
|
|
}
|
|
|
|
if (wrch)
|
|
CHN_UNLOCK(wrch);
|
|
if (rdch)
|
|
CHN_UNLOCK(rdch);
|
|
|
|
PCM_SG_UNLOCK();
|
|
|
|
if (sg_ids[0])
|
|
free_unr(pcmsg_unrhdr, sg_ids[0]);
|
|
if (sg_ids[1])
|
|
free_unr(pcmsg_unrhdr, sg_ids[1]);
|
|
if (sg_ids[2])
|
|
free_unr(pcmsg_unrhdr, sg_ids[2]);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/**
|
|
* @brief Launch a sync group into action
|
|
*
|
|
* Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function
|
|
* iterates over all members, triggering them along the way.
|
|
*
|
|
* @note Caller must not hold any channel locks.
|
|
*
|
|
* @param sg_id sync group identifier
|
|
*
|
|
* @retval 0 success
|
|
* @retval non-zero error worthy of propagating upstream to user
|
|
*/
|
|
static int
|
|
dsp_oss_syncstart(int sg_id)
|
|
{
|
|
struct pcmchan_syncmember *sm, *sm_tmp;
|
|
struct pcmchan_syncgroup *sg;
|
|
struct pcm_channel *c;
|
|
int ret, needlocks;
|
|
|
|
/* Get the synclists lock */
|
|
PCM_SG_LOCK();
|
|
|
|
do {
|
|
ret = 0;
|
|
needlocks = 0;
|
|
|
|
/* Search for syncgroup by ID */
|
|
SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) {
|
|
if (sg->id == sg_id)
|
|
break;
|
|
}
|
|
|
|
/* Return EINVAL if not found */
|
|
if (sg == NULL) {
|
|
ret = EINVAL;
|
|
break;
|
|
}
|
|
|
|
/* Any removals resulting in an empty group should've handled this */
|
|
KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup"));
|
|
|
|
/*
|
|
* Attempt to lock all member channels - if any are already
|
|
* locked, unlock those acquired, sleep for a bit, and try
|
|
* again.
|
|
*/
|
|
SLIST_FOREACH(sm, &sg->members, link) {
|
|
if (CHN_TRYLOCK(sm->ch) == 0) {
|
|
int timo = hz * 5/1000;
|
|
if (timo < 1)
|
|
timo = 1;
|
|
|
|
/* Release all locked channels so far, retry */
|
|
SLIST_FOREACH(sm_tmp, &sg->members, link) {
|
|
/* sm is the member already locked */
|
|
if (sm == sm_tmp)
|
|
break;
|
|
CHN_UNLOCK(sm_tmp->ch);
|
|
}
|
|
|
|
/** @todo Is PRIBIO correct/ */
|
|
ret = msleep(sm, &snd_pcm_syncgroups_mtx,
|
|
PRIBIO | PCATCH, "pcmsg", timo);
|
|
if (ret == EINTR || ret == ERESTART)
|
|
break;
|
|
|
|
needlocks = 1;
|
|
ret = 0; /* Assumes ret == EAGAIN... */
|
|
}
|
|
}
|
|
} while (needlocks && ret == 0);
|
|
|
|
/* Proceed only if no errors encountered. */
|
|
if (ret == 0) {
|
|
/* Launch channels */
|
|
while((sm = SLIST_FIRST(&sg->members)) != NULL) {
|
|
SLIST_REMOVE_HEAD(&sg->members, link);
|
|
|
|
c = sm->ch;
|
|
c->sm = NULL;
|
|
chn_start(c, 1);
|
|
c->flags &= ~CHN_F_NOTRIGGER;
|
|
CHN_UNLOCK(c);
|
|
|
|
free(sm, M_DEVBUF);
|
|
}
|
|
|
|
SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link);
|
|
free(sg, M_DEVBUF);
|
|
}
|
|
|
|
PCM_SG_UNLOCK();
|
|
|
|
/*
|
|
* Free_unr() may sleep, so be sure to give up the syncgroup lock
|
|
* first.
|
|
*/
|
|
if (ret == 0)
|
|
free_unr(pcmsg_unrhdr, sg_id);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/**
|
|
* @brief Handler for SNDCTL_DSP_POLICY
|
|
*
|
|
* The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment
|
|
* size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user
|
|
* specifying those two parameters, s/he simply selects a number from 0..10
|
|
* which corresponds to a buffer size. Smaller numbers request smaller
|
|
* buffers with lower latencies (at greater overhead from more frequent
|
|
* interrupts), while greater numbers behave in the opposite manner.
|
|
*
|
|
* The 4Front spec states that a value of 5 should be the default. However,
|
|
* this implementation deviates slightly by using a linear scale without
|
|
* consulting drivers. I.e., even though drivers may have different default
|
|
* buffer sizes, a policy argument of 5 will have the same result across
|
|
* all drivers.
|
|
*
|
|
* See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for
|
|
* more information.
|
|
*
|
|
* @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to
|
|
* work with hardware drivers directly.
|
|
*
|
|
* @note PCM channel arguments must not be locked by caller.
|
|
*
|
|
* @param wrch Pointer to opened playback channel (optional; may be NULL)
|
|
* @param rdch " recording channel (optional; may be NULL)
|
|
* @param policy Integer from [0:10]
|
|
*
|
|
* @retval 0 constant (for now)
|
|
*/
|
|
static int
|
|
dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy)
|
|
{
|
|
int ret;
|
|
|
|
if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX)
|
|
return (EIO);
|
|
|
|
/* Default: success */
|
|
ret = 0;
|
|
|
|
if (rdch) {
|
|
CHN_LOCK(rdch);
|
|
ret = chn_setlatency(rdch, policy);
|
|
CHN_UNLOCK(rdch);
|
|
}
|
|
|
|
if (wrch && ret == 0) {
|
|
CHN_LOCK(wrch);
|
|
ret = chn_setlatency(wrch, policy);
|
|
CHN_UNLOCK(wrch);
|
|
}
|
|
|
|
if (ret)
|
|
ret = EIO;
|
|
|
|
return (ret);
|
|
}
|
|
|
|
#ifdef OSSV4_EXPERIMENT
|
|
/**
|
|
* @brief Enable or disable "cooked" mode
|
|
*
|
|
* This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which
|
|
* is the default, the sound system handles rate and format conversions
|
|
* automatically (ex: user writing 11025Hz/8 bit/unsigned but card only
|
|
* operates with 44100Hz/16bit/signed samples).
|
|
*
|
|
* Disabling cooked mode is intended for applications wanting to mmap()
|
|
* a sound card's buffer space directly, bypassing the FreeBSD 2-stage
|
|
* feeder architecture, presumably to gain as much control over audio
|
|
* hardware as possible.
|
|
*
|
|
* See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html
|
|
* for more details.
|
|
*
|
|
* @note Currently, this function is just a stub that always returns EINVAL.
|
|
*
|
|
* @todo Figure out how to and actually implement this.
|
|
*
|
|
* @param wrch playback channel (optional; may be NULL)
|
|
* @param rdch recording channel (optional; may be NULL)
|
|
* @param enabled 0 = raw mode, 1 = cooked mode
|
|
*
|
|
* @retval EINVAL Operation not yet supported.
|
|
*/
|
|
static int
|
|
dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
/**
|
|
* @brief Retrieve channel interleaving order
|
|
*
|
|
* This is the handler for @c SNDCTL_DSP_GET_CHNORDER.
|
|
*
|
|
* See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html
|
|
* for more details.
|
|
*
|
|
* @note As the ioctl definition is still under construction, FreeBSD
|
|
* does not currently support SNDCTL_DSP_GET_CHNORDER.
|
|
*
|
|
* @param wrch playback channel (optional; may be NULL)
|
|
* @param rdch recording channel (optional; may be NULL)
|
|
* @param map channel map (result will be stored there)
|
|
*
|
|
* @retval EINVAL Operation not yet supported.
|
|
*/
|
|
static int
|
|
dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
/**
|
|
* @brief Specify channel interleaving order
|
|
*
|
|
* This is the handler for @c SNDCTL_DSP_SET_CHNORDER.
|
|
*
|
|
* @note As the ioctl definition is still under construction, FreeBSD
|
|
* does not currently support @c SNDCTL_DSP_SET_CHNORDER.
|
|
*
|
|
* @param wrch playback channel (optional; may be NULL)
|
|
* @param rdch recording channel (optional; may be NULL)
|
|
* @param map channel map
|
|
*
|
|
* @retval EINVAL Operation not yet supported.
|
|
*/
|
|
static int
|
|
dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
/**
|
|
* @brief Retrieve an audio device's label
|
|
*
|
|
* This is a handler for the @c SNDCTL_GETLABEL ioctl.
|
|
*
|
|
* See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html
|
|
* for more details.
|
|
*
|
|
* From Hannu@4Front: "For example ossxmix (just like some HW mixer
|
|
* consoles) can show variable "labels" for certain controls. By default
|
|
* the application name (say quake) is shown as the label but
|
|
* applications may change the labels themselves."
|
|
*
|
|
* @note As the ioctl definition is still under construction, FreeBSD
|
|
* does not currently support @c SNDCTL_GETLABEL.
|
|
*
|
|
* @param wrch playback channel (optional; may be NULL)
|
|
* @param rdch recording channel (optional; may be NULL)
|
|
* @param label label gets copied here
|
|
*
|
|
* @retval EINVAL Operation not yet supported.
|
|
*/
|
|
static int
|
|
dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
/**
|
|
* @brief Specify an audio device's label
|
|
*
|
|
* This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the
|
|
* comments for @c dsp_oss_getlabel immediately above.
|
|
*
|
|
* See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html
|
|
* for more details.
|
|
*
|
|
* @note As the ioctl definition is still under construction, FreeBSD
|
|
* does not currently support SNDCTL_SETLABEL.
|
|
*
|
|
* @param wrch playback channel (optional; may be NULL)
|
|
* @param rdch recording channel (optional; may be NULL)
|
|
* @param label label gets copied from here
|
|
*
|
|
* @retval EINVAL Operation not yet supported.
|
|
*/
|
|
static int
|
|
dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
/**
|
|
* @brief Retrieve name of currently played song
|
|
*
|
|
* This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could
|
|
* tell the system the name of the currently playing song, which would be
|
|
* visible in @c /dev/sndstat.
|
|
*
|
|
* See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html
|
|
* for more details.
|
|
*
|
|
* @note As the ioctl definition is still under construction, FreeBSD
|
|
* does not currently support SNDCTL_GETSONG.
|
|
*
|
|
* @param wrch playback channel (optional; may be NULL)
|
|
* @param rdch recording channel (optional; may be NULL)
|
|
* @param song song name gets copied here
|
|
*
|
|
* @retval EINVAL Operation not yet supported.
|
|
*/
|
|
static int
|
|
dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
/**
|
|
* @brief Retrieve name of currently played song
|
|
*
|
|
* This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could
|
|
* tell the system the name of the currently playing song, which would be
|
|
* visible in @c /dev/sndstat.
|
|
*
|
|
* See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html
|
|
* for more details.
|
|
*
|
|
* @note As the ioctl definition is still under construction, FreeBSD
|
|
* does not currently support SNDCTL_SETSONG.
|
|
*
|
|
* @param wrch playback channel (optional; may be NULL)
|
|
* @param rdch recording channel (optional; may be NULL)
|
|
* @param song song name gets copied from here
|
|
*
|
|
* @retval EINVAL Operation not yet supported.
|
|
*/
|
|
static int
|
|
dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
/**
|
|
* @brief Rename a device
|
|
*
|
|
* This is a handler for the @c SNDCTL_SETNAME ioctl.
|
|
*
|
|
* See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for
|
|
* more details.
|
|
*
|
|
* From Hannu@4Front: "This call is used to change the device name
|
|
* reported in /dev/sndstat and ossinfo. So instead of using some generic
|
|
* 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull
|
|
* name depending on the current context (for example 'OSS virtual wave table
|
|
* synth' or 'VoIP link to London')."
|
|
*
|
|
* @note As the ioctl definition is still under construction, FreeBSD
|
|
* does not currently support SNDCTL_SETNAME.
|
|
*
|
|
* @param wrch playback channel (optional; may be NULL)
|
|
* @param rdch recording channel (optional; may be NULL)
|
|
* @param name new device name gets copied from here
|
|
*
|
|
* @retval EINVAL Operation not yet supported.
|
|
*/
|
|
static int
|
|
dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
#endif /* !OSSV4_EXPERIMENT */
|