a67fe5c1d6
add method for retrieving "buffersize" hints for pcm devices, adjusted for specified minimum, maximum and default values.
283 lines
8.7 KiB
C
283 lines
8.7 KiB
C
/*
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* Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
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* Copyright by Hannu Savolainen 1995
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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/tty.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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#if __FreeBSD_version > 500000
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#include <sys/bio.h>
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#endif
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#include <sys/buf.h>
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#include <machine/clock.h> /* for DELAY */
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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/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 <isa/isavar.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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#undef USING_MUTEX
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#undef USING_DEVFS
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#if __FreeBSD_version > 500000
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#define USING_MUTEX
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#define USING_DEVFS
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#endif
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#define SND_DYNSYSCTL
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#ifndef INTR_MPSAFE
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#define INTR_TYPE_AV INTR_TYPE_TTY
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#endif
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#ifndef INTR_MPSAFE
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#define INTR_MPSAFE 0
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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/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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#define PCM_SOFTC_SIZE 512
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#define SND_STATUSLEN 64
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/* descriptor of audio device */
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#ifndef ISADMA_WRITE
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#define ISADMA_WRITE B_WRITE
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#define ISADMA_READ B_READ
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#define ISADMA_RAW B_RAW
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#endif
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#define PCM_MODVER 1
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#define PCM_MINVER 1
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#define PCM_PREFVER PCM_MODVER
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#define PCM_MAXVER 1
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/*
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PROPOSAL:
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each unit needs:
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status, mixer, dsp, dspW, audio, sequencer, midi-in, seq2, sndproc = 9 devices
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dspW and audio are deprecated.
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dsp needs min 64 channels, will give it 256
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minor = (unit << 20) + (dev << 16) + channel
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currently minor = (channel << 16) + (unit << 4) + dev
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nomenclature:
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/dev/pcmX/dsp.(0..255)
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/dev/pcmX/dspW
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/dev/pcmX/audio
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/dev/pcmX/status
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/dev/pcmX/mixer
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[etc.]
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*/
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#define PCMMINOR(x) (minor(x))
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#define PCMCHAN(x) ((PCMMINOR(x) & 0x00ff0000) >> 16)
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#define PCMUNIT(x) ((PCMMINOR(x) & 0x000000f0) >> 4)
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#define PCMDEV(x) (PCMMINOR(x) & 0x0000000f)
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#define PCMMKMINOR(u, d, c) ((((c) & 0xff) << 16) | (((u) & 0x0f) << 4) | ((d) & 0x0f))
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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_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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/* 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_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE)
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#define AFMT_8BIT (AFMT_U8 | AFMT_S8)
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#define AFMT_SIGNED (AFMT_S16_LE | AFMT_S16_BE | AFMT_S8)
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#define AFMT_BIGENDIAN (AFMT_S16_BE | AFMT_U16_BE)
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struct pcm_channel *fkchan_setup(device_t dev);
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int fkchan_kill(struct pcm_channel *c);
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/*
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* Major nuber for the sound driver.
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*/
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#define SND_CDEV_MAJOR 30
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#define SND_MAXVCHANS 255
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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_DSPREC 11 /* recording channels */
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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 snd_unit;
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extern devclass_t pcm_devclass;
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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 DDB(x) x /* XXX */
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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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struct sysctl_ctx_list *snd_sysctl_tree(device_t dev);
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struct sysctl_oid *snd_sysctl_tree_top(device_t dev);
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void pcm_lock(struct snddev_info *d);
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void pcm_unlock(struct snddev_info *d);
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struct pcm_channel *pcm_getfakechan(struct snddev_info *d);
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struct pcm_channel *pcm_chnalloc(struct snddev_info *d, int direction, pid_t pid, int chnum);
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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, 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, int mkdev);
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int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch, int rmdev);
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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 min, unsigned int deflt, unsigned int max);
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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);
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void snd_mtxfree(void *m);
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void snd_mtxassert(void *m);
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void snd_mtxlock(void *m);
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void snd_mtxunlock(void *m);
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int sysctl_hw_snd_vchans(SYSCTL_HANDLER_ARGS);
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typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose);
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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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int sndstat_busy(void);
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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 */
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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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#endif /* _KERNEL */
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#endif /* _OS_H_ */
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