623 lines
19 KiB
C
623 lines
19 KiB
C
/*-
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* Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
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* Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org>
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* Copyright (c) 1995 Hannu Savolainen
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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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* $FreeBSD$
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*/
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/*
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* first, include kernel header files.
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*/
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#ifndef _OS_H_
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#define _OS_H_
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#ifdef _KERNEL
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ioccom.h>
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#include <sys/filio.h>
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#include <sys/sockio.h>
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#include <sys/fcntl.h>
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#include <sys/selinfo.h>
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#include <sys/proc.h>
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#include <sys/kernel.h> /* for DATA_SET */
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#include <sys/module.h>
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#include <sys/conf.h>
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#include <sys/file.h>
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#include <sys/uio.h>
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#include <sys/syslog.h>
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#include <sys/errno.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <sys/limits.h>
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#include <sys/mman.h>
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#include <sys/poll.h>
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#include <sys/sbuf.h>
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#include <sys/soundcard.h>
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#include <sys/sysctl.h>
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#include <sys/kobj.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#ifndef KOBJMETHOD_END
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#define KOBJMETHOD_END { NULL, NULL }
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#endif
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struct pcm_channel;
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struct pcm_feeder;
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struct snd_dbuf;
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struct snd_mixer;
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#include <dev/sound/pcm/buffer.h>
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#include <dev/sound/pcm/matrix.h>
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#include <dev/sound/pcm/matrix_map.h>
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#include <dev/sound/pcm/channel.h>
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#include <dev/sound/pcm/feeder.h>
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#include <dev/sound/pcm/mixer.h>
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#include <dev/sound/pcm/dsp.h>
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#include <dev/sound/clone.h>
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#include <dev/sound/unit.h>
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#define PCM_SOFTC_SIZE (sizeof(struct snddev_info))
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#define SND_STATUSLEN 64
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#define SOUND_MODVER 5
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#define SOUND_MINVER SOUND_MODVER
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#define SOUND_PREFVER SOUND_MODVER
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#define SOUND_MAXVER SOUND_MODVER
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/*
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* We're abusing the fact that MAXMINOR still have enough room
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* for our bit twiddling and nobody ever need 512 unique soundcards,
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* 32 unique device types and 1024 unique cloneable devices for the
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* next 100 years...
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*/
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#define PCMMAXUNIT (snd_max_u())
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#define PCMMAXDEV (snd_max_d())
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#define PCMMAXCHAN (snd_max_c())
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#define PCMMAXCLONE PCMMAXCHAN
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#define PCMUNIT(x) (snd_unit2u(dev2unit(x)))
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#define PCMDEV(x) (snd_unit2d(dev2unit(x)))
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#define PCMCHAN(x) (snd_unit2c(dev2unit(x)))
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/* XXX unit2minor compat */
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#define PCMMINOR(x) (x)
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/*
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* By design, limit possible channels for each direction.
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*/
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#define SND_MAXHWCHAN 256
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#define SND_MAXVCHANS SND_MAXHWCHAN
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#define SD_F_SIMPLEX 0x00000001
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#define SD_F_AUTOVCHAN 0x00000002
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#define SD_F_SOFTPCMVOL 0x00000004
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/*
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* Obsolete due to better matrixing
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*/
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#if 0
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#define SD_F_PSWAPLR 0x00000008
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#define SD_F_RSWAPLR 0x00000010
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#endif
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#define SD_F_DYING 0x00000008
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#define SD_F_SUICIDE 0x00000010
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#define SD_F_BUSY 0x00000020
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#define SD_F_MPSAFE 0x00000040
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#define SD_F_REGISTERED 0x00000080
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#define SD_F_BITPERFECT 0x00000100
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#define SD_F_VPC 0x00000200 /* volume-per-channel */
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#define SD_F_EQ 0x00000400 /* EQ */
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#define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */
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#define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */
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#define SD_F_EQ_PC 0x00002000 /* EQ per-channel */
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#define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED)
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#define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \
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SD_F_EQ_BYPASSED | SD_F_EQ_PC)
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#define SD_F_PRIO_RD 0x10000000
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#define SD_F_PRIO_WR 0x20000000
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#define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR)
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#define SD_F_DIR_SET 0x40000000
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#define SD_F_TRANSIENT 0xf0000000
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#define SD_F_BITS "\020" \
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"\001SIMPLEX" \
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"\002AUTOVCHAN" \
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"\003SOFTPCMVOL" \
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"\004DYING" \
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"\005SUICIDE" \
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"\006BUSY" \
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"\007MPSAFE" \
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"\010REGISTERED" \
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"\011BITPERFECT" \
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"\012VPC" \
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"\013EQ" \
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"\014EQ_ENABLED" \
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"\015EQ_BYPASSED" \
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"\016EQ_PC" \
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"\035PRIO_RD" \
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"\036PRIO_WR" \
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"\037DIR_SET"
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#define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \
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!((x)->flags & SD_F_DYING))
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#define PCM_REGISTERED(x) (PCM_ALIVE(x) && \
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((x)->flags & SD_F_REGISTERED))
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/* many variables should be reduced to a range. Here define a macro */
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#define RANGE(var, low, high) (var) = \
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(((var)<(low))? (low) : ((var)>(high))? (high) : (var))
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#define DSP_BUFFSIZE (8192)
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/* make figuring out what a format is easier. got AFMT_STEREO already */
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#define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE)
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#define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE)
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#define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE)
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#define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW)
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#define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8)
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#define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \
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AFMT_S16_LE | AFMT_S16_BE | AFMT_S8)
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#define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \
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AFMT_S16_BE | AFMT_U16_BE)
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#define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \
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AFMT_32BIT)
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/* Supported vchan mixing formats */
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#define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711)
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#define AFMT_PASSTHROUGH AFMT_AC3
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#define AFMT_PASSTHROUGH_RATE 48000
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#define AFMT_PASSTHROUGH_CHANNEL 2
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#define AFMT_PASSTHROUGH_EXTCHANNEL 0
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/*
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* We're simply using unused, contiguous bits from various AFMT_ definitions.
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* ~(0xb00ff7ff)
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*/
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#define AFMT_ENCODING_MASK 0xf00fffff
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#define AFMT_CHANNEL_MASK 0x01f00000
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#define AFMT_CHANNEL_SHIFT 20
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#define AFMT_EXTCHANNEL_MASK 0x0e000000
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#define AFMT_EXTCHANNEL_SHIFT 25
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#define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK)
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#define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \
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AFMT_EXTCHANNEL_SHIFT)
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#define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \
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AFMT_CHANNEL_SHIFT)
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#define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \
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(((v) & AFMT_24BIT) ? 24 : \
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((((v) & AFMT_16BIT) || \
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((v) & AFMT_PASSTHROUGH)) ? 16 : 8)))
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#define AFMT_BPS(v) (AFMT_BIT(v) >> 3)
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#define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v))
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#define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \
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(((c) << AFMT_CHANNEL_SHIFT) & \
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AFMT_CHANNEL_MASK) | \
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(((e) << AFMT_EXTCHANNEL_SHIFT) & \
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AFMT_EXTCHANNEL_MASK))
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#define AFMT_U8_NE AFMT_U8
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#define AFMT_S8_NE AFMT_S8
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#define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE)
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#define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \
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AFMT_U24_NE | AFMT_U32_NE)
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/*
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* Minor numbers for the sound driver.
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*
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* Unfortunately Creative called the codec chip of SB as a DSP. For this
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* reason the /dev/dsp is reserved for digitized audio use. There is a
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* device for true DSP processors but it will be called something else.
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* In v3.0 it's /dev/sndproc but this could be a temporary solution.
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*/
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#define SND_DEV_CTL 0 /* Control port /dev/mixer */
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#define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */
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#define SND_DEV_MIDIN 2 /* Raw midi access */
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#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */
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#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */
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#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */
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#define SND_DEV_STATUS 6 /* /dev/sndstat */
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/* #7 not in use now. */
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#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */
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#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */
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#define SND_DEV_PSS SND_DEV_SNDPROC /* ? */
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#define SND_DEV_NORESET 10
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#define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */
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#define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */
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#define SND_DEV_DSPHW_REC 13 /* specific record channel */
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#define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */
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#define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */
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/*
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* OSSv4 compatible device. For now, it serve no purpose and
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* the cloning itself will forward the request to ordinary /dev/dsp
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* instead.
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*/
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#define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */
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#define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */
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#define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */
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#define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */
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#define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */
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#define SND_DEV_LAST SND_DEV_DSP_SPDIFIN
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#define SND_DEV_MAX PCMMAXDEV
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#define DSP_DEFAULT_SPEED 8000
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#define ON 1
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#define OFF 0
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extern int pcm_veto_load;
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extern int snd_unit;
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extern int snd_maxautovchans;
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extern int snd_verbose;
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extern devclass_t pcm_devclass;
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extern struct unrhdr *pcmsg_unrhdr;
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/*
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* some macros for debugging purposes
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* DDB/DEB to enable/disable debugging stuff
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* BVDDB to enable debugging when bootverbose
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*/
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#define BVDDB(x) if (bootverbose) x
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#ifndef DEB
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#define DEB(x)
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#endif
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SYSCTL_DECL(_hw_snd);
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int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num);
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int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction,
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pid_t pid, char *comm, int devunit);
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int pcm_chnrelease(struct pcm_channel *c);
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int pcm_chnref(struct pcm_channel *c, int ref);
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int pcm_inprog(struct snddev_info *d, int delta);
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struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo);
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int pcm_chn_destroy(struct pcm_channel *ch);
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int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch);
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int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch);
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int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo);
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unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz);
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int pcm_register(device_t dev, void *devinfo, int numplay, int numrec);
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int pcm_unregister(device_t dev);
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int pcm_setstatus(device_t dev, char *str);
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u_int32_t pcm_getflags(device_t dev);
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void pcm_setflags(device_t dev, u_int32_t val);
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void *pcm_getdevinfo(device_t dev);
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int snd_setup_intr(device_t dev, struct resource *res, int flags,
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driver_intr_t hand, void *param, void **cookiep);
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void *snd_mtxcreate(const char *desc, const char *type);
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void snd_mtxfree(void *m);
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void snd_mtxassert(void *m);
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#define snd_mtxlock(m) mtx_lock(m)
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#define snd_mtxunlock(m) mtx_unlock(m)
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typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose);
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int sndstat_acquire(struct thread *td);
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int sndstat_release(struct thread *td);
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int sndstat_register(device_t dev, char *str, sndstat_handler handler);
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int sndstat_registerfile(char *str);
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int sndstat_unregister(device_t dev);
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int sndstat_unregisterfile(char *str);
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#define SND_DECLARE_FILE(version) \
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_SND_DECLARE_FILE(__LINE__, version)
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#define _SND_DECLARE_FILE(uniq, version) \
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__SND_DECLARE_FILE(uniq, version)
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#define __SND_DECLARE_FILE(uniq, version) \
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static char sndstat_vinfo[] = version; \
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SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \
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SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo);
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/* usage of flags in device config entry (config file) */
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#define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */
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#define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */
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/* ought to be made obsolete but still used by mss */
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#define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */
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#define DV_F_DEV_SHIFT 8 /* force device type/class */
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/*
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* this is rather kludgey- we need to duplicate these struct def'ns from sound.c
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* so that the macro versions of pcm_{,un}lock can dereference them.
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* we also have to do this now makedev() has gone away.
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*/
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struct snddev_info {
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struct {
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struct {
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SLIST_HEAD(, pcm_channel) head;
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struct {
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SLIST_HEAD(, pcm_channel) head;
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} busy;
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struct {
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SLIST_HEAD(, pcm_channel) head;
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} opened;
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} pcm;
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} channels;
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TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool;
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struct snd_clone *clones;
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unsigned devcount, playcount, reccount, pvchancount, rvchancount ;
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unsigned flags;
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int inprog;
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unsigned int bufsz;
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void *devinfo;
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device_t dev;
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char status[SND_STATUSLEN];
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struct mtx *lock;
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struct cdev *mixer_dev;
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uint32_t pvchanrate, pvchanformat;
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uint32_t rvchanrate, rvchanformat;
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int32_t eqpreamp;
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struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx;
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struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree;
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struct cv cv;
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};
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void sound_oss_sysinfo(oss_sysinfo *);
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int sound_oss_card_info(oss_card_info *);
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#define PCM_LOCKOWNED(d) mtx_owned((d)->lock)
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#define PCM_LOCK(d) mtx_lock((d)->lock)
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#define PCM_UNLOCK(d) mtx_unlock((d)->lock)
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#define PCM_TRYLOCK(d) mtx_trylock((d)->lock)
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#define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED)
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#define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED)
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/*
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* For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these
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* with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you!
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*/
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#ifdef SND_DIAGNOSTIC
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#define PCM_WAIT(x) do { \
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if (!PCM_LOCKOWNED(x)) \
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panic("%s(%d): [PCM WAIT] Mutex not owned!", \
|
|
__func__, __LINE__); \
|
|
while ((x)->flags & SD_F_BUSY) { \
|
|
if (snd_verbose > 3) \
|
|
device_printf((x)->dev, \
|
|
"%s(%d): [PCM WAIT] calling cv_wait().\n", \
|
|
__func__, __LINE__); \
|
|
cv_wait(&(x)->cv, (x)->lock); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define PCM_ACQUIRE(x) do { \
|
|
if (!PCM_LOCKOWNED(x)) \
|
|
panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \
|
|
__func__, __LINE__); \
|
|
if ((x)->flags & SD_F_BUSY) \
|
|
panic("%s(%d): [PCM ACQUIRE] " \
|
|
"Trying to acquire BUSY cv!", __func__, __LINE__); \
|
|
(x)->flags |= SD_F_BUSY; \
|
|
} while (0)
|
|
|
|
#define PCM_RELEASE(x) do { \
|
|
if (!PCM_LOCKOWNED(x)) \
|
|
panic("%s(%d): [PCM RELEASE] Mutex not owned!", \
|
|
__func__, __LINE__); \
|
|
if ((x)->flags & SD_F_BUSY) { \
|
|
(x)->flags &= ~SD_F_BUSY; \
|
|
if ((x)->cv.cv_waiters != 0) { \
|
|
if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \
|
|
device_printf((x)->dev, \
|
|
"%s(%d): [PCM RELEASE] " \
|
|
"cv_waiters=%d > 1!\n", \
|
|
__func__, __LINE__, \
|
|
(x)->cv.cv_waiters); \
|
|
cv_broadcast(&(x)->cv); \
|
|
} \
|
|
} else \
|
|
panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \
|
|
__func__, __LINE__); \
|
|
} while (0)
|
|
|
|
/* Quick version, for shorter path. */
|
|
#define PCM_ACQUIRE_QUICK(x) do { \
|
|
if (PCM_LOCKOWNED(x)) \
|
|
panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \
|
|
__func__, __LINE__); \
|
|
PCM_LOCK(x); \
|
|
PCM_WAIT(x); \
|
|
PCM_ACQUIRE(x); \
|
|
PCM_UNLOCK(x); \
|
|
} while (0)
|
|
|
|
#define PCM_RELEASE_QUICK(x) do { \
|
|
if (PCM_LOCKOWNED(x)) \
|
|
panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \
|
|
__func__, __LINE__); \
|
|
PCM_LOCK(x); \
|
|
PCM_RELEASE(x); \
|
|
PCM_UNLOCK(x); \
|
|
} while (0)
|
|
|
|
#define PCM_BUSYASSERT(x) do { \
|
|
if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \
|
|
panic("%s(%d): [PCM BUSYASSERT] " \
|
|
"Failed, snddev_info=%p", __func__, __LINE__, x); \
|
|
} while (0)
|
|
|
|
#define PCM_GIANT_ENTER(x) do { \
|
|
int _pcm_giant = 0; \
|
|
if (PCM_LOCKOWNED(x)) \
|
|
panic("%s(%d): [GIANT ENTER] PCM lock owned!", \
|
|
__func__, __LINE__); \
|
|
if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \
|
|
device_printf((x)->dev, \
|
|
"%s(%d): [GIANT ENTER] Giant owned!\n", \
|
|
__func__, __LINE__); \
|
|
if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \
|
|
do { \
|
|
mtx_lock(&Giant); \
|
|
_pcm_giant = 1; \
|
|
} while (0)
|
|
|
|
#define PCM_GIANT_EXIT(x) do { \
|
|
if (PCM_LOCKOWNED(x)) \
|
|
panic("%s(%d): [GIANT EXIT] PCM lock owned!", \
|
|
__func__, __LINE__); \
|
|
if (!(_pcm_giant == 0 || _pcm_giant == 1)) \
|
|
panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \
|
|
__func__, __LINE__); \
|
|
if ((x)->flags & SD_F_MPSAFE) { \
|
|
if (_pcm_giant == 1) \
|
|
panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \
|
|
__func__, __LINE__); \
|
|
if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \
|
|
device_printf((x)->dev, \
|
|
"%s(%d): [GIANT EXIT] Giant owned!\n", \
|
|
__func__, __LINE__); \
|
|
} \
|
|
if (_pcm_giant != 0) { \
|
|
if (mtx_owned(&Giant) == 0) \
|
|
panic("%s(%d): [GIANT EXIT] Giant not owned!", \
|
|
__func__, __LINE__); \
|
|
_pcm_giant = 0; \
|
|
mtx_unlock(&Giant); \
|
|
} \
|
|
} while (0)
|
|
#else /* SND_DIAGNOSTIC */
|
|
#define PCM_WAIT(x) do { \
|
|
PCM_LOCKASSERT(x); \
|
|
while ((x)->flags & SD_F_BUSY) \
|
|
cv_wait(&(x)->cv, (x)->lock); \
|
|
} while (0)
|
|
|
|
#define PCM_ACQUIRE(x) do { \
|
|
PCM_LOCKASSERT(x); \
|
|
KASSERT(!((x)->flags & SD_F_BUSY), \
|
|
("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \
|
|
__func__, __LINE__)); \
|
|
(x)->flags |= SD_F_BUSY; \
|
|
} while (0)
|
|
|
|
#define PCM_RELEASE(x) do { \
|
|
PCM_LOCKASSERT(x); \
|
|
KASSERT((x)->flags & SD_F_BUSY, \
|
|
("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \
|
|
__func__, __LINE__)); \
|
|
(x)->flags &= ~SD_F_BUSY; \
|
|
if ((x)->cv.cv_waiters != 0) \
|
|
cv_broadcast(&(x)->cv); \
|
|
} while (0)
|
|
|
|
/* Quick version, for shorter path. */
|
|
#define PCM_ACQUIRE_QUICK(x) do { \
|
|
PCM_UNLOCKASSERT(x); \
|
|
PCM_LOCK(x); \
|
|
PCM_WAIT(x); \
|
|
PCM_ACQUIRE(x); \
|
|
PCM_UNLOCK(x); \
|
|
} while (0)
|
|
|
|
#define PCM_RELEASE_QUICK(x) do { \
|
|
PCM_UNLOCKASSERT(x); \
|
|
PCM_LOCK(x); \
|
|
PCM_RELEASE(x); \
|
|
PCM_UNLOCK(x); \
|
|
} while (0)
|
|
|
|
#define PCM_BUSYASSERT(x) KASSERT(x != NULL && \
|
|
((x)->flags & SD_F_BUSY), \
|
|
("%s(%d): [PCM BUSYASSERT] " \
|
|
"Failed, snddev_info=%p", \
|
|
__func__, __LINE__, x))
|
|
|
|
#define PCM_GIANT_ENTER(x) do { \
|
|
int _pcm_giant = 0; \
|
|
PCM_UNLOCKASSERT(x); \
|
|
if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \
|
|
do { \
|
|
mtx_lock(&Giant); \
|
|
_pcm_giant = 1; \
|
|
} while (0)
|
|
|
|
#define PCM_GIANT_EXIT(x) do { \
|
|
PCM_UNLOCKASSERT(x); \
|
|
KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \
|
|
("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \
|
|
__func__, __LINE__)); \
|
|
KASSERT(!((x)->flags & SD_F_MPSAFE) || \
|
|
(((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \
|
|
("%s(%d): [GIANT EXIT] MPSAFE Giant?", \
|
|
__func__, __LINE__)); \
|
|
if (_pcm_giant != 0) { \
|
|
mtx_assert(&Giant, MA_OWNED); \
|
|
_pcm_giant = 0; \
|
|
mtx_unlock(&Giant); \
|
|
} \
|
|
} while (0)
|
|
#endif /* !SND_DIAGNOSTIC */
|
|
|
|
#define PCM_GIANT_LEAVE(x) \
|
|
PCM_GIANT_EXIT(x); \
|
|
} while (0)
|
|
|
|
#ifdef KLD_MODULE
|
|
#define PCM_KLDSTRING(a) ("kld " # a)
|
|
#else
|
|
#define PCM_KLDSTRING(a) ""
|
|
#endif
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _OS_H_ */
|