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ac97.c
(29.38 KB)
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ac97.h
(4.04 KB)
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ac97_if.m
(1.69 KB)
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ac97_patch.c
(3.43 KB)
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ac97_patch.h
(1.62 KB)
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buffer.c
(17.28 KB)
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buffer.h
(5.84 KB)
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channel.c
(60.5 KB)
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channel.h
(13.56 KB)
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channel_if.m
(5.4 KB)
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dsp.c
(81.92 KB)
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dsp.h
(1.85 KB)
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feeder.c
(13.07 KB)
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feeder.h
(6.05 KB)
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feeder_chain.c
(21.88 KB)
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feeder_eq.c
(17.37 KB)
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feeder_format.c
(6.9 KB)
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feeder_if.m
(2.15 KB)
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feeder_matrix.c
(20.97 KB)
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feeder_mixer.c
(10.36 KB)
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feeder_rate.c
(48.18 KB)
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feeder_volume.c
(8.7 KB)
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g711.h
(9.52 KB)
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intpcm.h
(4.33 KB)
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matrix.h
(7.31 KB)
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matrix_map.h
(18.45 KB)
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mixer.c
(35.58 KB)
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mixer.h
(3.8 KB)
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mixer_if.m
(1.78 KB)
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pcm.h
(14.67 KB)
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sndstat.c
(9.8 KB)
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sndstat.h
(5.85 KB)
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sound.c
(32.16 KB)
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sound.h
(19.17 KB)
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vchan.c
(22.45 KB)
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vchan.h
(2.58 KB)
Editing: sound.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> * Copyright (c) 1997 Luigi Rizzo * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifdef HAVE_KERNEL_OPTION_HEADERS #include "opt_snd.h" #endif #include <dev/sound/pcm/sound.h> #include <dev/sound/pcm/ac97.h> #include <dev/sound/pcm/vchan.h> #include <dev/sound/pcm/dsp.h> #include <dev/sound/pcm/sndstat.h> #include <dev/sound/version.h> #include <sys/limits.h> #include <sys/sysctl.h> #include "feeder_if.h" SND_DECLARE_FILE("$FreeBSD$"); devclass_t pcm_devclass; int pcm_veto_load = 1; int snd_unit = -1; static int snd_unit_auto = -1; SYSCTL_INT(_hw_snd, OID_AUTO, default_auto, CTLFLAG_RWTUN, &snd_unit_auto, 0, "assign default unit to a newly attached device"); int snd_maxautovchans = 16; SYSCTL_NODE(_hw, OID_AUTO, snd, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Sound driver"); static void pcm_sysinit(device_t); /* * XXX I've had enough with people not telling proper version/arch * while reporting problems, not after 387397913213th questions/requests. */ static char snd_driver_version[] = __XSTRING(SND_DRV_VERSION)"/"MACHINE_ARCH; SYSCTL_STRING(_hw_snd, OID_AUTO, version, CTLFLAG_RD, &snd_driver_version, 0, "driver version/arch"); /** * @brief Unit number allocator for syncgroup IDs */ struct unrhdr *pcmsg_unrhdr = NULL; static int sndstat_prepare_pcm(SNDSTAT_PREPARE_PCM_ARGS) { SNDSTAT_PREPARE_PCM_BEGIN(); SNDSTAT_PREPARE_PCM_END(); } void * snd_mtxcreate(const char *desc, const char *type) { struct mtx *m; m = malloc(sizeof(*m), M_DEVBUF, M_WAITOK | M_ZERO); mtx_init(m, desc, type, MTX_DEF); return m; } void snd_mtxfree(void *m) { struct mtx *mtx = m; mtx_destroy(mtx); free(mtx, M_DEVBUF); } void snd_mtxassert(void *m) { #ifdef INVARIANTS struct mtx *mtx = m; mtx_assert(mtx, MA_OWNED); #endif } int snd_setup_intr(device_t dev, struct resource *res, int flags, driver_intr_t hand, void *param, void **cookiep) { struct snddev_info *d; flags &= INTR_MPSAFE; flags |= INTR_TYPE_AV; d = device_get_softc(dev); if (d != NULL && (flags & INTR_MPSAFE)) d->flags |= SD_F_MPSAFE; return bus_setup_intr(dev, res, flags, NULL, hand, param, cookiep); } static void pcm_clonereset(struct snddev_info *d) { int cmax; PCM_BUSYASSERT(d); cmax = d->playcount + d->reccount - 1; if (d->pvchancount > 0) cmax += max(d->pvchancount, snd_maxautovchans) - 1; if (d->rvchancount > 0) cmax += max(d->rvchancount, snd_maxautovchans) - 1; if (cmax > PCMMAXCLONE) cmax = PCMMAXCLONE; (void)snd_clone_gc(d->clones); (void)snd_clone_setmaxunit(d->clones, cmax); } int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num) { struct pcm_channel *c, *ch, *nch; struct pcmchan_caps *caps; int i, err, vcnt; PCM_BUSYASSERT(d); if ((direction == PCMDIR_PLAY && d->playcount < 1) || (direction == PCMDIR_REC && d->reccount < 1)) return (ENODEV); if (!(d->flags & SD_F_AUTOVCHAN)) return (EINVAL); if (newcnt < 0 || newcnt > SND_MAXVCHANS) return (E2BIG); if (direction == PCMDIR_PLAY) vcnt = d->pvchancount; else if (direction == PCMDIR_REC) vcnt = d->rvchancount; else return (EINVAL); if (newcnt > vcnt) { KASSERT(num == -1 || (num >= 0 && num < SND_MAXVCHANS && (newcnt - 1) == vcnt), ("bogus vchan_create() request num=%d newcnt=%d vcnt=%d", num, newcnt, vcnt)); /* add new vchans - find a parent channel first */ ch = NULL; CHN_FOREACH(c, d, channels.pcm) { CHN_LOCK(c); if (c->direction == direction && ((c->flags & CHN_F_HAS_VCHAN) || (vcnt == 0 && c->refcount < 1 && !(c->flags & (CHN_F_BUSY | CHN_F_VIRTUAL))))) { /* * Reuse hw channel with vchans already * created. */ if (c->flags & CHN_F_HAS_VCHAN) { ch = c; break; } /* * No vchans ever created, look for * channels with supported formats. */ caps = chn_getcaps(c); if (caps == NULL) { CHN_UNLOCK(c); continue; } for (i = 0; caps->fmtlist[i] != 0; i++) { if (caps->fmtlist[i] & AFMT_CONVERTIBLE) break; } if (caps->fmtlist[i] != 0) { ch = c; break; } } CHN_UNLOCK(c); } if (ch == NULL) return (EBUSY); ch->flags |= CHN_F_BUSY; err = 0; while (err == 0 && newcnt > vcnt) { err = vchan_create(ch, num); if (err == 0) vcnt++; else if (err == E2BIG && newcnt > vcnt) device_printf(d->dev, "%s: err=%d Maximum channel reached.\n", __func__, err); } if (vcnt == 0) ch->flags &= ~CHN_F_BUSY; CHN_UNLOCK(ch); if (err != 0) return (err); else pcm_clonereset(d); } else if (newcnt < vcnt) { KASSERT(num == -1, ("bogus vchan_destroy() request num=%d", num)); CHN_FOREACH(c, d, channels.pcm) { CHN_LOCK(c); if (c->direction != direction || CHN_EMPTY(c, children) || !(c->flags & CHN_F_HAS_VCHAN)) { CHN_UNLOCK(c); continue; } CHN_FOREACH_SAFE(ch, c, nch, children) { CHN_LOCK(ch); if (vcnt == 1 && c->refcount > 0) { CHN_UNLOCK(ch); break; } if (!(ch->flags & CHN_F_BUSY) && ch->refcount < 1) { err = vchan_destroy(ch); if (err == 0) vcnt--; } else CHN_UNLOCK(ch); if (vcnt == newcnt) break; } CHN_UNLOCK(c); break; } pcm_clonereset(d); } return (0); } /* return error status and a locked channel */ int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, pid_t pid, char *comm, int devunit) { struct pcm_channel *c; int err, vchancount, vchan_num; KASSERT(d != NULL && ch != NULL && (devunit == -1 || !(devunit & ~(SND_U_MASK | SND_D_MASK | SND_C_MASK))) && (direction == PCMDIR_PLAY || direction == PCMDIR_REC), ("%s(): invalid d=%p ch=%p direction=%d pid=%d devunit=%d", __func__, d, ch, direction, pid, devunit)); PCM_BUSYASSERT(d); /* Double check again. */ if (devunit != -1) { switch (snd_unit2d(devunit)) { case SND_DEV_DSPHW_PLAY: case SND_DEV_DSPHW_VPLAY: if (direction != PCMDIR_PLAY) return (ENOTSUP); break; case SND_DEV_DSPHW_REC: case SND_DEV_DSPHW_VREC: if (direction != PCMDIR_REC) return (ENOTSUP); break; default: if (!(direction == PCMDIR_PLAY || direction == PCMDIR_REC)) return (ENOTSUP); break; } } *ch = NULL; vchan_num = 0; vchancount = (direction == PCMDIR_PLAY) ? d->pvchancount : d->rvchancount; retry_chnalloc: err = ENOTSUP; /* scan for a free channel */ CHN_FOREACH(c, d, channels.pcm) { CHN_LOCK(c); if (devunit == -1 && c->direction == direction && (c->flags & CHN_F_VIRTUAL)) { if (vchancount < snd_maxautovchans && vchan_num < CHN_CHAN(c)) { CHN_UNLOCK(c); goto vchan_alloc; } vchan_num++; } if (c->direction == direction && !(c->flags & CHN_F_BUSY) && (devunit == -1 || devunit == -2 || c->unit == devunit)) { c->flags |= CHN_F_BUSY; c->pid = pid; strlcpy(c->comm, (comm != NULL) ? comm : CHN_COMM_UNKNOWN, sizeof(c->comm)); *ch = c; return (0); } else if (c->unit == devunit) { if (c->direction != direction) err = ENOTSUP; else if (c->flags & CHN_F_BUSY) err = EBUSY; else err = EINVAL; CHN_UNLOCK(c); return (err); } else if ((devunit == -1 || devunit == -2) && c->direction == direction && (c->flags & CHN_F_BUSY)) err = EBUSY; CHN_UNLOCK(c); } if (devunit == -2) return (err); vchan_alloc: /* no channel available */ if (devunit == -1 || snd_unit2d(devunit) == SND_DEV_DSPHW_VPLAY || snd_unit2d(devunit) == SND_DEV_DSPHW_VREC) { if (!(vchancount > 0 && vchancount < snd_maxautovchans) && (devunit == -1 || snd_unit2c(devunit) < snd_maxautovchans)) return (err); err = pcm_setvchans(d, direction, vchancount + 1, (devunit == -1) ? -1 : snd_unit2c(devunit)); if (err == 0) { if (devunit == -1) devunit = -2; goto retry_chnalloc; } } return (err); } /* release a locked channel and unlock it */ int pcm_chnrelease(struct pcm_channel *c) { PCM_BUSYASSERT(c->parentsnddev); CHN_LOCKASSERT(c); c->flags &= ~CHN_F_BUSY; c->pid = -1; strlcpy(c->comm, CHN_COMM_UNUSED, sizeof(c->comm)); CHN_UNLOCK(c); return (0); } int pcm_chnref(struct pcm_channel *c, int ref) { PCM_BUSYASSERT(c->parentsnddev); CHN_LOCKASSERT(c); c->refcount += ref; return (c->refcount); } int pcm_inprog(struct snddev_info *d, int delta) { PCM_LOCKASSERT(d); d->inprog += delta; return (d->inprog); } static void pcm_setmaxautovchans(struct snddev_info *d, int num) { PCM_BUSYASSERT(d); if (num < 0) return; if (num >= 0 && d->pvchancount > num) (void)pcm_setvchans(d, PCMDIR_PLAY, num, -1); else if (num > 0 && d->pvchancount == 0) (void)pcm_setvchans(d, PCMDIR_PLAY, 1, -1); if (num >= 0 && d->rvchancount > num) (void)pcm_setvchans(d, PCMDIR_REC, num, -1); else if (num > 0 && d->rvchancount == 0) (void)pcm_setvchans(d, PCMDIR_REC, 1, -1); pcm_clonereset(d); } static int sysctl_hw_snd_default_unit(SYSCTL_HANDLER_ARGS) { struct snddev_info *d; int error, unit; unit = snd_unit; error = sysctl_handle_int(oidp, &unit, 0, req); if (error == 0 && req->newptr != NULL) { d = devclass_get_softc(pcm_devclass, unit); if (!PCM_REGISTERED(d) || CHN_EMPTY(d, channels.pcm)) return EINVAL; snd_unit = unit; snd_unit_auto = 0; } return (error); } /* XXX: do we need a way to let the user change the default unit? */ SYSCTL_PROC(_hw_snd, OID_AUTO, default_unit, CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_ANYBODY | CTLFLAG_NEEDGIANT, 0, sizeof(int), sysctl_hw_snd_default_unit, "I", "default sound device"); static int sysctl_hw_snd_maxautovchans(SYSCTL_HANDLER_ARGS) { struct snddev_info *d; int i, v, error; v = snd_maxautovchans; error = sysctl_handle_int(oidp, &v, 0, req); if (error == 0 && req->newptr != NULL) { if (v < 0) v = 0; if (v > SND_MAXVCHANS) v = SND_MAXVCHANS; snd_maxautovchans = v; for (i = 0; pcm_devclass != NULL && i < devclass_get_maxunit(pcm_devclass); i++) { d = devclass_get_softc(pcm_devclass, i); if (!PCM_REGISTERED(d)) continue; PCM_ACQUIRE_QUICK(d); pcm_setmaxautovchans(d, v); PCM_RELEASE_QUICK(d); } } return (error); } SYSCTL_PROC(_hw_snd, OID_AUTO, maxautovchans, CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, 0, sizeof(int), sysctl_hw_snd_maxautovchans, "I", "maximum virtual channel"); struct pcm_channel * pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo) { struct pcm_channel *ch; int direction, err, rpnum, *pnum, max; int udc, device, chan; char *dirs, *devname, buf[CHN_NAMELEN]; PCM_BUSYASSERT(d); PCM_LOCKASSERT(d); KASSERT(num >= -1, ("invalid num=%d", num)); switch (dir) { case PCMDIR_PLAY: dirs = "play"; direction = PCMDIR_PLAY; pnum = &d->playcount; device = SND_DEV_DSPHW_PLAY; max = SND_MAXHWCHAN; break; case PCMDIR_PLAY_VIRTUAL: dirs = "virtual"; direction = PCMDIR_PLAY; pnum = &d->pvchancount; device = SND_DEV_DSPHW_VPLAY; max = SND_MAXVCHANS; break; case PCMDIR_REC: dirs = "record"; direction = PCMDIR_REC; pnum = &d->reccount; device = SND_DEV_DSPHW_REC; max = SND_MAXHWCHAN; break; case PCMDIR_REC_VIRTUAL: dirs = "virtual"; direction = PCMDIR_REC; pnum = &d->rvchancount; device = SND_DEV_DSPHW_VREC; max = SND_MAXVCHANS; break; default: return (NULL); } chan = (num == -1) ? 0 : num; if (*pnum >= max || chan >= max) return (NULL); rpnum = 0; CHN_FOREACH(ch, d, channels.pcm) { if (CHN_DEV(ch) != device) continue; if (chan == CHN_CHAN(ch)) { if (num != -1) { device_printf(d->dev, "channel num=%d allocated!\n", chan); return (NULL); } chan++; if (chan >= max) { device_printf(d->dev, "chan=%d > %d\n", chan, max); return (NULL); } } rpnum++; } if (*pnum != rpnum) { device_printf(d->dev, "%s(): WARNING: pnum screwed : dirs=%s pnum=%d rpnum=%d\n", __func__, dirs, *pnum, rpnum); return (NULL); } udc = snd_mkunit(device_get_unit(d->dev), device, chan); devname = dsp_unit2name(buf, sizeof(buf), udc); if (devname == NULL) { device_printf(d->dev, "Failed to query device name udc=0x%08x\n", udc); return (NULL); } PCM_UNLOCK(d); ch = malloc(sizeof(*ch), M_DEVBUF, M_WAITOK | M_ZERO); ch->methods = kobj_create(cls, M_DEVBUF, M_WAITOK | M_ZERO); ch->unit = udc; ch->pid = -1; strlcpy(ch->comm, CHN_COMM_UNUSED, sizeof(ch->comm)); ch->parentsnddev = d; ch->parentchannel = parent; ch->dev = d->dev; ch->trigger = PCMTRIG_STOP; snprintf(ch->name, sizeof(ch->name), "%s:%s:%s", device_get_nameunit(ch->dev), dirs, devname); err = chn_init(ch, devinfo, dir, direction); PCM_LOCK(d); if (err) { device_printf(d->dev, "chn_init(%s) failed: err = %d\n", ch->name, err); kobj_delete(ch->methods, M_DEVBUF); free(ch, M_DEVBUF); return (NULL); } return (ch); } int pcm_chn_destroy(struct pcm_channel *ch) { struct snddev_info *d; int err; d = ch->parentsnddev; PCM_BUSYASSERT(d); err = chn_kill(ch); if (err) { device_printf(ch->dev, "chn_kill(%s) failed, err = %d\n", ch->name, err); return (err); } kobj_delete(ch->methods, M_DEVBUF); free(ch, M_DEVBUF); return (0); } int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch) { PCM_BUSYASSERT(d); PCM_LOCKASSERT(d); KASSERT(ch != NULL && (ch->direction == PCMDIR_PLAY || ch->direction == PCMDIR_REC), ("Invalid pcm channel")); CHN_INSERT_SORT_ASCEND(d, ch, channels.pcm); switch (CHN_DEV(ch)) { case SND_DEV_DSPHW_PLAY: d->playcount++; break; case SND_DEV_DSPHW_VPLAY: d->pvchancount++; break; case SND_DEV_DSPHW_REC: d->reccount++; break; case SND_DEV_DSPHW_VREC: d->rvchancount++; break; default: break; } d->devcount++; return (0); } int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch) { struct pcm_channel *tmp; PCM_BUSYASSERT(d); PCM_LOCKASSERT(d); tmp = NULL; CHN_FOREACH(tmp, d, channels.pcm) { if (tmp == ch) break; } if (tmp != ch) return (EINVAL); CHN_REMOVE(d, ch, channels.pcm); switch (CHN_DEV(ch)) { case SND_DEV_DSPHW_PLAY: d->playcount--; break; case SND_DEV_DSPHW_VPLAY: d->pvchancount--; break; case SND_DEV_DSPHW_REC: d->reccount--; break; case SND_DEV_DSPHW_VREC: d->rvchancount--; break; default: break; } d->devcount--; return (0); } int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo) { struct snddev_info *d = device_get_softc(dev); struct pcm_channel *ch; int err; PCM_BUSYASSERT(d); PCM_LOCK(d); ch = pcm_chn_create(d, NULL, cls, dir, -1, devinfo); if (!ch) { device_printf(d->dev, "pcm_chn_create(%s, %d, %p) failed\n", cls->name, dir, devinfo); PCM_UNLOCK(d); return (ENODEV); } err = pcm_chn_add(d, ch); PCM_UNLOCK(d); if (err) { device_printf(d->dev, "pcm_chn_add(%s) failed, err=%d\n", ch->name, err); pcm_chn_destroy(ch); } return (err); } static int pcm_killchan(device_t dev) { struct snddev_info *d = device_get_softc(dev); struct pcm_channel *ch; int error; PCM_BUSYASSERT(d); ch = CHN_FIRST(d, channels.pcm); PCM_LOCK(d); error = pcm_chn_remove(d, ch); PCM_UNLOCK(d); if (error) return (error); return (pcm_chn_destroy(ch)); } static int pcm_best_unit(int old) { struct snddev_info *d; int i, best, bestprio, prio; best = -1; bestprio = -100; 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; prio = 0; if (d->playcount == 0) prio -= 10; if (d->reccount == 0) prio -= 2; if (prio > bestprio || (prio == bestprio && i == old)) { best = i; bestprio = prio; } } return (best); } int pcm_setstatus(device_t dev, char *str) { struct snddev_info *d = device_get_softc(dev); /* should only be called once */ if (d->flags & SD_F_REGISTERED) return (EINVAL); PCM_BUSYASSERT(d); if (d->playcount == 0 || d->reccount == 0) d->flags |= SD_F_SIMPLEX; if (d->playcount > 0 || d->reccount > 0) d->flags |= SD_F_AUTOVCHAN; pcm_setmaxautovchans(d, snd_maxautovchans); strlcpy(d->status, str, SND_STATUSLEN); PCM_LOCK(d); /* Last stage, enable cloning. */ if (d->clones != NULL) (void)snd_clone_enable(d->clones); /* Done, we're ready.. */ d->flags |= SD_F_REGISTERED; PCM_RELEASE(d); PCM_UNLOCK(d); /* * Create all sysctls once SD_F_REGISTERED is set else * tunable sysctls won't work: */ pcm_sysinit(dev); if (snd_unit_auto < 0) snd_unit_auto = (snd_unit < 0) ? 1 : 0; if (snd_unit < 0 || snd_unit_auto > 1) snd_unit = device_get_unit(dev); else if (snd_unit_auto == 1) snd_unit = pcm_best_unit(snd_unit); return (0); } uint32_t pcm_getflags(device_t dev) { struct snddev_info *d = device_get_softc(dev); return d->flags; } void pcm_setflags(device_t dev, uint32_t val) { struct snddev_info *d = device_get_softc(dev); d->flags = val; } void * pcm_getdevinfo(device_t dev) { struct snddev_info *d = device_get_softc(dev); return d->devinfo; } unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz) { struct snddev_info *d = device_get_softc(dev); int sz, x; sz = 0; if (resource_int_value(device_get_name(dev), device_get_unit(dev), "buffersize", &sz) == 0) { x = sz; RANGE(sz, minbufsz, maxbufsz); if (x != sz) device_printf(dev, "'buffersize=%d' hint is out of range (%d-%d), using %d\n", x, minbufsz, maxbufsz, sz); x = minbufsz; while (x < sz) x <<= 1; if (x > sz) x >>= 1; if (x != sz) { device_printf(dev, "'buffersize=%d' hint is not a power of 2, using %d\n", sz, x); sz = x; } } else { sz = deflt; } d->bufsz = sz; return sz; } static int sysctl_dev_pcm_bitperfect(SYSCTL_HANDLER_ARGS) { struct snddev_info *d; int err, val; d = oidp->oid_arg1; if (!PCM_REGISTERED(d)) return (ENODEV); PCM_LOCK(d); PCM_WAIT(d); val = (d->flags & SD_F_BITPERFECT) ? 1 : 0; PCM_ACQUIRE(d); PCM_UNLOCK(d); err = sysctl_handle_int(oidp, &val, 0, req); if (err == 0 && req->newptr != NULL) { if (!(val == 0 || val == 1)) { PCM_RELEASE_QUICK(d); return (EINVAL); } PCM_LOCK(d); d->flags &= ~SD_F_BITPERFECT; d->flags |= (val != 0) ? SD_F_BITPERFECT : 0; PCM_RELEASE(d); PCM_UNLOCK(d); } else PCM_RELEASE_QUICK(d); return (err); } #ifdef SND_DEBUG static int sysctl_dev_pcm_clone_flags(SYSCTL_HANDLER_ARGS) { struct snddev_info *d; uint32_t flags; int err; d = oidp->oid_arg1; if (!PCM_REGISTERED(d) || d->clones == NULL) return (ENODEV); PCM_ACQUIRE_QUICK(d); flags = snd_clone_getflags(d->clones); err = sysctl_handle_int(oidp, &flags, 0, req); if (err == 0 && req->newptr != NULL) { if (flags & ~SND_CLONE_MASK) err = EINVAL; else (void)snd_clone_setflags(d->clones, flags); } PCM_RELEASE_QUICK(d); return (err); } static int sysctl_dev_pcm_clone_deadline(SYSCTL_HANDLER_ARGS) { struct snddev_info *d; int err, deadline; d = oidp->oid_arg1; if (!PCM_REGISTERED(d) || d->clones == NULL) return (ENODEV); PCM_ACQUIRE_QUICK(d); deadline = snd_clone_getdeadline(d->clones); err = sysctl_handle_int(oidp, &deadline, 0, req); if (err == 0 && req->newptr != NULL) { if (deadline < 0) err = EINVAL; else (void)snd_clone_setdeadline(d->clones, deadline); } PCM_RELEASE_QUICK(d); return (err); } static int sysctl_dev_pcm_clone_gc(SYSCTL_HANDLER_ARGS) { struct snddev_info *d; int err, val; d = oidp->oid_arg1; if (!PCM_REGISTERED(d) || d->clones == NULL) return (ENODEV); val = 0; err = sysctl_handle_int(oidp, &val, 0, req); if (err == 0 && req->newptr != NULL && val != 0) { PCM_ACQUIRE_QUICK(d); val = snd_clone_gc(d->clones); PCM_RELEASE_QUICK(d); if (bootverbose != 0 || snd_verbose > 3) device_printf(d->dev, "clone gc: pruned=%d\n", val); } return (err); } static int sysctl_hw_snd_clone_gc(SYSCTL_HANDLER_ARGS) { struct snddev_info *d; int i, err, val; val = 0; err = sysctl_handle_int(oidp, &val, 0, req); if (err == 0 && req->newptr != NULL && val != 0) { for (i = 0; pcm_devclass != NULL && i < devclass_get_maxunit(pcm_devclass); i++) { d = devclass_get_softc(pcm_devclass, i); if (!PCM_REGISTERED(d) || d->clones == NULL) continue; PCM_ACQUIRE_QUICK(d); val = snd_clone_gc(d->clones); PCM_RELEASE_QUICK(d); if (bootverbose != 0 || snd_verbose > 3) device_printf(d->dev, "clone gc: pruned=%d\n", val); } } return (err); } SYSCTL_PROC(_hw_snd, OID_AUTO, clone_gc, CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, 0, sizeof(int), sysctl_hw_snd_clone_gc, "I", "global clone garbage collector"); #endif static void pcm_sysinit(device_t dev) { struct snddev_info *d = device_get_softc(dev); /* XXX: an user should be able to set this with a control tool, the sysadmin then needs min+max sysctls for this */ SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev), SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "buffersize", CTLFLAG_RD, &d->bufsz, 0, "allocated buffer size"); SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "bitperfect", CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, d, sizeof(d), sysctl_dev_pcm_bitperfect, "I", "bit-perfect playback/recording (0=disable, 1=enable)"); #ifdef SND_DEBUG SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "clone_flags", CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, d, sizeof(d), sysctl_dev_pcm_clone_flags, "IU", "clone flags"); SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "clone_deadline", CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, d, sizeof(d), sysctl_dev_pcm_clone_deadline, "I", "clone expiration deadline (ms)"); SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "clone_gc", CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, d, sizeof(d), sysctl_dev_pcm_clone_gc, "I", "clone garbage collector"); #endif if (d->flags & SD_F_AUTOVCHAN) vchan_initsys(dev); if (d->flags & SD_F_EQ) feeder_eq_initsys(dev); } int pcm_register(device_t dev, void *devinfo, int numplay, int numrec) { struct snddev_info *d; int i; if (pcm_veto_load) { device_printf(dev, "disabled due to an error while initialising: %d\n", pcm_veto_load); return EINVAL; } if (device_get_unit(dev) > PCMMAXUNIT) { device_printf(dev, "PCMMAXUNIT reached : unit=%d > %d\n", device_get_unit(dev), PCMMAXUNIT); device_printf(dev, "Use 'hw.snd.maxunit' tunable to raise the limit.\n"); return ENODEV; } d = device_get_softc(dev); d->dev = dev; d->lock = snd_mtxcreate(device_get_nameunit(dev), "sound cdev"); cv_init(&d->cv, device_get_nameunit(dev)); PCM_ACQUIRE_QUICK(d); dsp_cdevinfo_init(d); #if 0 /* * d->flags should be cleared by the allocator of the softc. * We cannot clear this field here because several devices set * this flag before calling pcm_register(). */ d->flags = 0; #endif i = 0; if (resource_int_value(device_get_name(dev), device_get_unit(dev), "vpc", &i) != 0 || i != 0) d->flags |= SD_F_VPC; if (resource_int_value(device_get_name(dev), device_get_unit(dev), "bitperfect", &i) == 0 && i != 0) d->flags |= SD_F_BITPERFECT; d->devinfo = devinfo; d->devcount = 0; d->reccount = 0; d->playcount = 0; d->pvchancount = 0; d->rvchancount = 0; d->pvchanrate = 0; d->pvchanformat = 0; d->rvchanrate = 0; d->rvchanformat = 0; d->inprog = 0; /* * Create clone manager, disabled by default. Cloning will be * enabled during final stage of driver initialization through * pcm_setstatus(). */ d->clones = snd_clone_create(SND_U_MASK | SND_D_MASK, PCMMAXCLONE, SND_CLONE_DEADLINE_DEFAULT, SND_CLONE_WAITOK | SND_CLONE_GC_ENABLE | SND_CLONE_GC_UNREF | SND_CLONE_GC_LASTREF | SND_CLONE_GC_EXPIRED); CHN_INIT(d, channels.pcm); CHN_INIT(d, channels.pcm.busy); CHN_INIT(d, channels.pcm.opened); /* XXX This is incorrect, but lets play along for now. */ if ((numplay == 0 || numrec == 0) && numplay != numrec) d->flags |= SD_F_SIMPLEX; sysctl_ctx_init(&d->play_sysctl_ctx); d->play_sysctl_tree = SYSCTL_ADD_NODE(&d->play_sysctl_ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "play", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "playback channels node"); sysctl_ctx_init(&d->rec_sysctl_ctx); d->rec_sysctl_tree = SYSCTL_ADD_NODE(&d->rec_sysctl_ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "rec", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "record channels node"); if (numplay > 0 || numrec > 0) d->flags |= SD_F_AUTOVCHAN; sndstat_register(dev, d->status, sndstat_prepare_pcm); return 0; } int pcm_unregister(device_t dev) { struct snddev_info *d; struct pcm_channel *ch; struct thread *td; td = curthread; d = device_get_softc(dev); if (!PCM_ALIVE(d)) { device_printf(dev, "unregister: device not configured\n"); return (0); } PCM_LOCK(d); PCM_WAIT(d); d->flags |= SD_F_DETACHING; if (d->inprog != 0) { device_printf(dev, "unregister: operation in progress\n"); PCM_UNLOCK(d); return (EBUSY); } PCM_ACQUIRE(d); PCM_UNLOCK(d); CHN_FOREACH(ch, d, channels.pcm) { CHN_LOCK(ch); if (ch->refcount > 0) { device_printf(dev, "unregister: channel %s busy (pid %d)\n", ch->name, ch->pid); CHN_UNLOCK(ch); PCM_RELEASE_QUICK(d); return (EBUSY); } CHN_UNLOCK(ch); } if (d->clones != NULL) { if (snd_clone_busy(d->clones) != 0) { device_printf(dev, "unregister: clone busy\n"); PCM_RELEASE_QUICK(d); return (EBUSY); } else { PCM_LOCK(d); (void)snd_clone_disable(d->clones); PCM_UNLOCK(d); } } if (mixer_uninit(dev) == EBUSY) { device_printf(dev, "unregister: mixer busy\n"); PCM_LOCK(d); if (d->clones != NULL) (void)snd_clone_enable(d->clones); PCM_RELEASE(d); PCM_UNLOCK(d); return (EBUSY); } /* remove /dev/sndstat entry first */ sndstat_unregister(dev); PCM_LOCK(d); d->flags |= SD_F_DYING; d->flags &= ~SD_F_REGISTERED; PCM_UNLOCK(d); /* * No lock being held, so this thing can be flushed without * stucking into devdrn oblivion. */ if (d->clones != NULL) { snd_clone_destroy(d->clones); d->clones = NULL; } if (d->play_sysctl_tree != NULL) { sysctl_ctx_free(&d->play_sysctl_ctx); d->play_sysctl_tree = NULL; } if (d->rec_sysctl_tree != NULL) { sysctl_ctx_free(&d->rec_sysctl_ctx); d->rec_sysctl_tree = NULL; } while (!CHN_EMPTY(d, channels.pcm)) pcm_killchan(dev); dsp_cdevinfo_flush(d); PCM_LOCK(d); PCM_RELEASE(d); cv_destroy(&d->cv); PCM_UNLOCK(d); snd_mtxfree(d->lock); if (snd_unit == device_get_unit(dev)) { snd_unit = pcm_best_unit(-1); if (snd_unit_auto == 0) snd_unit_auto = 1; } return (0); } /************************************************************************/ /** * @brief Handle OSSv4 SNDCTL_SYSINFO ioctl. * * @param si Pointer to oss_sysinfo struct where information about the * sound subsystem will be written/copied. * * This routine returns information about the sound system, such as the * current OSS version, number of audio, MIDI, and mixer drivers, etc. * Also includes a bitmask showing which of the above types of devices * are open (busy). * * @note * Calling threads must not hold any snddev_info or pcm_channel locks. * * @author Ryan Beasley <ryanb@FreeBSD.org> */ void sound_oss_sysinfo(oss_sysinfo *si) { static char si_product[] = "FreeBSD native OSS ABI"; static char si_version[] = __XSTRING(__FreeBSD_version); static char si_license[] = "BSD"; static int intnbits = sizeof(int) * 8; /* Better suited as macro? Must pester a C guru. */ struct snddev_info *d; struct pcm_channel *c; int i, j, ncards; ncards = 0; strlcpy(si->product, si_product, sizeof(si->product)); strlcpy(si->version, si_version, sizeof(si->version)); si->versionnum = SOUND_VERSION; strlcpy(si->license, si_license, sizeof(si->license)); /* * Iterate over PCM devices and their channels, gathering up data * for the numaudios, ncards, and openedaudio fields. */ si->numaudios = 0; bzero((void *)&si->openedaudio, sizeof(si->openedaudio)); j = 0; 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 note in function's docblock */ PCM_UNLOCKASSERT(d); PCM_LOCK(d); si->numaudios += d->devcount; ++ncards; CHN_FOREACH(c, d, channels.pcm) { CHN_UNLOCKASSERT(c); CHN_LOCK(c); if (c->flags & CHN_F_BUSY) si->openedaudio[j / intnbits] |= (1 << (j % intnbits)); CHN_UNLOCK(c); j++; } PCM_UNLOCK(d); } si->numaudioengines = si->numaudios; si->numsynths = 0; /* OSSv4 docs: this field is obsolete */ /** * @todo Collect num{midis,timers}. * * Need access to sound/midi/midi.c::midistat_lock in order * to safely touch midi_devices and get a head count of, well, * MIDI devices. midistat_lock is a global static (i.e., local to * midi.c), but midi_devices is a regular global; should the mutex * be publicized, or is there another way to get this information? * * NB: MIDI/sequencer stuff is currently on hold. */ si->nummidis = 0; si->numtimers = 0; si->nummixers = mixer_count; si->numcards = ncards; /* OSSv4 docs: Intended only for test apps; API doesn't really have much of a concept of cards. Shouldn't be used by applications. */ /** * @todo Fill in "busy devices" fields. * * si->openedmidi = " MIDI devices */ bzero((void *)&si->openedmidi, sizeof(si->openedmidi)); /* * Si->filler is a reserved array, but according to docs each * element should be set to -1. */ for (i = 0; i < sizeof(si->filler)/sizeof(si->filler[0]); i++) si->filler[i] = -1; } int sound_oss_card_info(oss_card_info *si) { struct snddev_info *d; int i, ncards; ncards = 0; 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; if (ncards++ != si->card) continue; PCM_UNLOCKASSERT(d); PCM_LOCK(d); strlcpy(si->shortname, device_get_nameunit(d->dev), sizeof(si->shortname)); strlcpy(si->longname, device_get_desc(d->dev), sizeof(si->longname)); strlcpy(si->hw_info, d->status, sizeof(si->hw_info)); si->intr_count = si->ack_count = 0; PCM_UNLOCK(d); return (0); } return (ENXIO); } /************************************************************************/ static int sound_modevent(module_t mod, int type, void *data) { int ret; #if 0 return (midi_modevent(mod, type, data)); #else ret = 0; switch(type) { case MOD_LOAD: pcmsg_unrhdr = new_unrhdr(1, INT_MAX, NULL); break; case MOD_UNLOAD: if (pcmsg_unrhdr != NULL) { delete_unrhdr(pcmsg_unrhdr); pcmsg_unrhdr = NULL; } break; case MOD_SHUTDOWN: break; default: ret = ENOTSUP; } return ret; #endif } DEV_MODULE(sound, sound_modevent, NULL); MODULE_VERSION(sound, SOUND_MODVER);
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