sndstat.c File Reference

#include <sys/param.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/nv.h>
#include <sys/dnv.h>
#include <sys/sx.h>
#include <dev/sound/pcm/sound.h>
#include <dev/sound/pcm/pcm.h>
#include <dev/sound/version.h>

Include dependency graph for sndstat.c:

Go to the source code of this file.

Data Structures
struct	sndstat_entry
struct	sndstat_userdev
struct	sndstat_file

Macros
#define	SS_TYPE_MODULE   0
#define	SS_TYPE_PCM   1
#define	SS_TYPE_MIDI   2
#define	SS_TYPE_SEQUENCER   3
#define	SNDSTAT_LOCK()   sx_xlock(&sndstat_lock)
#define	SNDSTAT_UNLOCK()   sx_xunlock(&sndstat_lock)

Functions
	SND_DECLARE_FILE ("$FreeBSD$")
static void	sndstat_close (void *)
static	TAILQ_HEAD (sndstat_entry)
	SYSCTL_PROC (_hw_snd, OID_AUTO, verbose, CTLTYPE_INT|CTLFLAG_RWTUN|CTLFLAG_MPSAFE, 0, sizeof(int), sysctl_hw_sndverbose, "I", "verbosity level")
static int	sndstat_open (struct cdev *i_dev, int flags, int mode, struct thread *td)
static void	sndstat_remove_all_userdevs (struct sndstat_file *pf)
static int	sndstat_read (struct cdev *i_dev, struct uio *buf, int flag)
static int	sndstat_write (struct cdev *i_dev, struct uio *buf, int flag)
static void	sndstat_get_caps (struct snddev_info *d, bool play, uint32_t *min_rate, uint32_t *max_rate, uint32_t *fmts, uint32_t *minchn, uint32_t *maxchn)
static nvlist_t *	sndstat_create_diinfo_nv (uint32_t min_rate, uint32_t max_rate, uint32_t formats, uint32_t min_chn, uint32_t max_chn)
static int	sndstat_build_sound4_nvlist (struct snddev_info *d, nvlist_t **dip)
static int	sndstat_build_userland_nvlist (struct sndstat_userdev *ud, nvlist_t **dip)
static int	sndstat_create_devs_nvlist (nvlist_t **nvlp)
static int	sndstat_refresh_devs (struct sndstat_file *pf)
static int	sndstat_get_devs (struct sndstat_file *pf, caddr_t data)
static int	sndstat_unpack_user_nvlbuf (const void *unvlbuf, size_t nbytes, nvlist_t **nvl)
static bool	sndstat_diinfo_is_sane (const nvlist_t *diinfo)
static bool	sndstat_dsp_nvlist_is_sane (const nvlist_t *nvlist)
static void	sndstat_get_diinfo_nv (const nvlist_t *nv, uint32_t *min_rate, uint32_t *max_rate, uint32_t *formats, uint32_t *min_chn, uint32_t *max_chn)
static int	sndstat_dsp_unpack_nvlist (const nvlist_t *nvlist, struct sndstat_userdev *ud)
static int	sndstat_add_user_devs (struct sndstat_file *pf, caddr_t data)
static int	sndstat_flush_user_devs (struct sndstat_file *pf)
static int	sndstat_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
static struct sndstat_userdev *	sndstat_line2userdev (struct sndstat_file *pf, const char *line, int n)
int	sndstat_register (device_t dev, char *str, sndstat_handler handler)
int	sndstat_registerfile (char *str)
int	sndstat_unregister (device_t dev)
int	sndstat_unregisterfile (char *str)
static int	sndstat_prepare (struct sndstat_file *pf_self)
static void	sndstat_sysinit (void *p)
	SYSINIT (sndstat_sysinit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysinit, NULL)
static void	sndstat_sysuninit (void *p)
	SYSUNINIT (sndstat_sysuninit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysuninit, NULL)

Variables
static d_open_t	sndstat_open
static d_read_t	sndstat_read
static d_write_t	sndstat_write
static d_ioctl_t	sndstat_ioctl
static struct cdevsw	sndstat_cdevsw
static struct sx	sndstat_lock
static struct cdev *	sndstat_dev

Macro Definition Documentation

SNDSTAT_LOCK

#define SNDSTAT_LOCK

(

)

sx_xlock(&sndstat_lock)

Definition at line 117 of file sndstat.c.

SNDSTAT_UNLOCK

#define SNDSTAT_UNLOCK

(

)

sx_xunlock(&sndstat_lock)

Definition at line 118 of file sndstat.c.

SS_TYPE_MIDI

#define SS_TYPE_MIDI   2

Definition at line 57 of file sndstat.c.

SS_TYPE_MODULE

#define SS_TYPE_MODULE   0

Definition at line 55 of file sndstat.c.

SS_TYPE_PCM

#define SS_TYPE_PCM   1

Definition at line 56 of file sndstat.c.

SS_TYPE_SEQUENCER

#define SS_TYPE_SEQUENCER   3

Definition at line 58 of file sndstat.c.

Function Documentation

SND_DECLARE_FILE()

SND_DECLARE_FILE

(

"$FreeBSD$"

)

sndstat_add_user_devs()

static int sndstat_add_user_devs ( struct sndstat_file *  pf, caddr_t  data  )

static

Definition at line 856 of file sndstat.c.

References data, pf, sndstat_dsp_nvlist_is_sane(), sndstat_dsp_unpack_nvlist(), and sndstat_unpack_user_nvlbuf().

Referenced by sndstat_ioctl().

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sndstat_build_sound4_nvlist()

static int sndstat_build_sound4_nvlist ( struct snddev_info *  d, nvlist_t **  dip  )

static

Definition at line 397 of file sndstat.c.

References snddev_info::dev, snddev_info::flags, fmts, PCM_ACQUIRE_QUICK, PCM_RELEASE_QUICK, snddev_info::playcount, snddev_info::pvchancount, snddev_info::reccount, snddev_info::rvchancount, SD_F_BITPERFECT, sndstat_create_diinfo_nv(), and sndstat_get_caps().

Referenced by sndstat_create_devs_nvlist().

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sndstat_build_userland_nvlist()

static int sndstat_build_userland_nvlist ( struct sndstat_userdev *  ud, nvlist_t **  dip  )

static

Definition at line 478 of file sndstat.c.

References sndstat_userdev::info_play, sndstat_userdev::info_rec, sndstat_userdev::provider_nvl, and sndstat_create_diinfo_nv().

Referenced by sndstat_create_devs_nvlist().

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sndstat_close()

static void sndstat_close ( void *  sndstat_file )

static

Definition at line 198 of file sndstat.c.

References free, pf, SNDSTAT_LOCK, sndstat_remove_all_userdevs(), and SNDSTAT_UNLOCK.

Referenced by sndstat_open().

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sndstat_create_devs_nvlist()

static int sndstat_create_devs_nvlist ( nvlist_t **  nvlp )

static

Definition at line 549 of file sndstat.c.

References PCM_REGISTERED, pf, sndstat_build_sound4_nvlist(), and sndstat_build_userland_nvlist().

Referenced by sndstat_get_devs().

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sndstat_create_diinfo_nv()

static nvlist_t * sndstat_create_diinfo_nv ( uint32_t  min_rate, uint32_t  max_rate, uint32_t  formats, uint32_t  min_chn, uint32_t  max_chn  )

static

Definition at line 380 of file sndstat.c.

Referenced by sndstat_build_sound4_nvlist(), and sndstat_build_userland_nvlist().

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sndstat_diinfo_is_sane()

static bool sndstat_diinfo_is_sane ( const nvlist_t *  diinfo )

static

Definition at line 718 of file sndstat.c.

Referenced by sndstat_dsp_nvlist_is_sane().

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sndstat_dsp_nvlist_is_sane()

static bool sndstat_dsp_nvlist_is_sane ( const nvlist_t *  nvlist )

static

Definition at line 730 of file sndstat.c.

References sndstat_diinfo_is_sane().

Referenced by sndstat_add_user_devs().

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sndstat_dsp_unpack_nvlist()

static int sndstat_dsp_unpack_nvlist ( const nvlist_t *  nvlist, struct sndstat_userdev *  ud  )

static

Definition at line 777 of file sndstat.c.

References desc, sndstat_userdev::info_play, sndstat_userdev::info_rec, provider, sndstat_userdev::provider_nvl, and sndstat_get_diinfo_nv().

Referenced by sndstat_add_user_devs().

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sndstat_flush_user_devs()

static int sndstat_flush_user_devs ( struct sndstat_file *  pf )

static

Definition at line 903 of file sndstat.c.

References pf, and sndstat_remove_all_userdevs().

Referenced by sndstat_ioctl().

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sndstat_get_caps()

static void sndstat_get_caps ( struct snddev_info *  d, bool  play, uint32_t *  min_rate, uint32_t *  max_rate, uint32_t *  fmts, uint32_t *  minchn, uint32_t *  maxchn  )

static

Definition at line 329 of file sndstat.c.

References AFMT_CHANNEL, AFMT_ENCODING, c, pcmchan_caps::caps, pcm_channel::channels, CHN_F_VIRTUAL, CHN_FOREACH, chn_getcaps(), CHN_LOCK, CHN_UNLOCK, dir, pcm_channel::direction, pcm_channel::flags, fmts, max, PCMDIR_PLAY, PCMDIR_REC, snddev_info::pvchancount, snddev_info::pvchanformat, snddev_info::pvchanrate, snddev_info::rvchancount, snddev_info::rvchanformat, and snddev_info::rvchanrate.

Referenced by sndstat_build_sound4_nvlist().

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sndstat_get_devs()

static int sndstat_get_devs ( struct sndstat_file *  pf, caddr_t  data  )

static

Definition at line 628 of file sndstat.c.

References data, free, pf, sndstat_create_devs_nvlist(), SNDSTAT_LOCK, and SNDSTAT_UNLOCK.

Referenced by sndstat_ioctl().

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sndstat_get_diinfo_nv()

static void sndstat_get_diinfo_nv ( const nvlist_t *  nv, uint32_t *  min_rate, uint32_t *  max_rate, uint32_t *  formats, uint32_t *  min_chn, uint32_t *  max_chn  )

static

Definition at line 765 of file sndstat.c.

Referenced by sndstat_dsp_unpack_nvlist().

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sndstat_ioctl()

static int sndstat_ioctl ( struct cdev *  dev, u_long  cmd, caddr_t  data, int  fflag, struct thread *  td  )

static

Definition at line 956 of file sndstat.c.

References data, pf, sndstat_add_user_devs(), sndstat_flush_user_devs(), sndstat_get_devs(), and sndstat_refresh_devs().

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sndstat_line2userdev()

static struct sndstat_userdev * sndstat_line2userdev ( struct sndstat_file *  pf, const char *  line, int  n  )

static

Definition at line 1005 of file sndstat.c.

References fail, free, m, and sndstat_userdev::provider_nvl.

Referenced by sndstat_write().

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sndstat_open()

static int sndstat_open ( struct cdev *  i_dev, int  flags, int  mode, struct thread *  td  )

static

Definition at line 150 of file sndstat.c.

References free, pf, sndstat_close(), SNDSTAT_LOCK, and SNDSTAT_UNLOCK.

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sndstat_prepare()

static int sndstat_prepare ( struct sndstat_file *  pf_self )

static

Definition at line 1160 of file sndstat.c.

References k, PCM_ACQUIRE_QUICK, PCM_REGISTERED, PCM_RELEASE_QUICK, pf, SND_DRV_VERSION, and snd_verbose.

Referenced by sndstat_read().

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sndstat_read()

static int sndstat_read ( struct cdev *  i_dev, struct uio *  buf, int  flag  )

static

Definition at line 217 of file sndstat.c.

References buf, len, pf, SNDSTAT_LOCK, sndstat_prepare(), and SNDSTAT_UNLOCK.

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sndstat_refresh_devs()

static int sndstat_refresh_devs ( struct sndstat_file *  pf )

static

Definition at line 616 of file sndstat.c.

References free, and pf.

Referenced by sndstat_ioctl().

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sndstat_register()

int sndstat_register	(	device_t	dev,
		char *	str,
		sndstat_handler	handler
	)

Definition at line 1059 of file sndstat.c.

References dev, SNDSTAT_LOCK, SNDSTAT_UNLOCK, SS_TYPE_MIDI, SS_TYPE_MODULE, SS_TYPE_PCM, SS_TYPE_SEQUENCER, and type.

Referenced by pcm_register(), and sndstat_registerfile().

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sndstat_registerfile()

int sndstat_registerfile

(

char *

str

)

Definition at line 1112 of file sndstat.c.

References sndstat_register().

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sndstat_remove_all_userdevs()

static void sndstat_remove_all_userdevs ( struct sndstat_file *  pf )

static

Definition at line 180 of file sndstat.c.

References free, pf, and sndstat_userdev::provider_nvl.

Referenced by sndstat_close(), sndstat_flush_user_devs(), and sndstat_write().

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sndstat_sysinit()

static void sndstat_sysinit ( void *  p )

static

Definition at line 1247 of file sndstat.c.

References SND_DEV_STATUS, sndstat_cdevsw, sndstat_dev, and sndstat_lock.

sndstat_sysuninit()

static void sndstat_sysuninit ( void *  p )

static

Definition at line 1256 of file sndstat.c.

References sndstat_dev, and sndstat_lock.

sndstat_unpack_user_nvlbuf()

static int sndstat_unpack_user_nvlbuf ( const void *  unvlbuf, size_t  nbytes, nvlist_t **  nvl  )

static

Definition at line 697 of file sndstat.c.

References free.

Referenced by sndstat_add_user_devs().

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sndstat_unregister()

int sndstat_unregister

(

device_t

dev

)

Definition at line 1118 of file sndstat.c.

References dev, error, free, SNDSTAT_LOCK, and SNDSTAT_UNLOCK.

Referenced by pcm_unregister().

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sndstat_unregisterfile()

int sndstat_unregisterfile

(

char *

str

)

Definition at line 1138 of file sndstat.c.

References error, free, SNDSTAT_LOCK, and SNDSTAT_UNLOCK.

sndstat_write()

static int sndstat_write ( struct cdev *  i_dev, struct uio *  buf, int  flag  )

static

Definition at line 255 of file sndstat.c.

References buf, len, pf, sndstat_line2userdev(), SNDSTAT_LOCK, sndstat_remove_all_userdevs(), and SNDSTAT_UNLOCK.

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SYSCTL_PROC()

SYSCTL_PROC	(	_hw_snd	,
		OID_AUTO	,
		verbose	,
		CTLTYPE_INT|CTLFLAG_RWTUN|	CTLFLAG_MPSAFE,
		0	,
		sizeof(int)	,
		sysctl_hw_sndverbose	,
		"I"	,
		"verbosity level"
	)

SYSINIT()

SYSINIT	(	sndstat_sysinit	,
		SI_SUB_DRIVERS	,
		SI_ORDER_FIRST	,
		sndstat_sysinit	,
		NULL
	)

SYSUNINIT()

SYSUNINIT	(	sndstat_sysuninit	,
		SI_SUB_DRIVERS	,
		SI_ORDER_FIRST	,
		sndstat_sysuninit	,
		NULL
	)

TAILQ_HEAD()

static TAILQ_HEAD ( sndstat_entry  )

static

Definition at line 120 of file sndstat.c.

References error, and req.

Variable Documentation

sndstat_cdevsw

struct cdevsw sndstat_cdevsw

static

Initial value:

= {
        .d_version =    D_VERSION,
        .d_open =       sndstat_open,
        .d_read =       sndstat_read,
        .d_write =      sndstat_write,
        .d_ioctl =      sndstat_ioctl,
        .d_name =       "sndstat",
        .d_flags =      D_TRACKCLOSE,
}

Definition at line 66 of file sndstat.c.

Referenced by sndstat_sysinit().

sndstat_dev

struct cdev* sndstat_dev

static

Definition at line 115 of file sndstat.c.

Referenced by sndstat_sysinit(), and sndstat_sysuninit().

sndstat_ioctl

d_ioctl_t sndstat_ioctl

static

Definition at line 64 of file sndstat.c.

sndstat_lock

struct sx sndstat_lock

static

Definition at line 114 of file sndstat.c.

Referenced by sndstat_sysinit(), and sndstat_sysuninit().

sndstat_open

d_open_t sndstat_open

static

Definition at line 60 of file sndstat.c.

sndstat_read

d_read_t sndstat_read

static

Definition at line 62 of file sndstat.c.

sndstat_write

d_write_t sndstat_write

static

Definition at line 63 of file sndstat.c.