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WSBELL(9) NetBSD Kernel Developer's Manual WSBELL(9)
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Maintained for NetBSD
by Kimmo Suominen.
Based on man-cgi by Panagiotis Christias.
wsbell, wsbelldevprint -- wscons system bell support
wsbelldevprint(void *aux, const char *pnp);
The wsbell module is a component of the wscons(9) framework, providing
keyboard-independent bell support. All of the support is provided by the
wsbell(4) device driver, which must be a child of the hardware device
driver. The only hardware device drivers that can provide a wsbell
facility are speaker(4) devices.
Speaker drivers providing support for wscons bell devices will make use
of the following data types:
A structure used to attach the wsbell(4) child device. It has
the following members:
The default wsbell printing routine used by config_found().
Speaker drivers which want to use the wsbell module must be a parent to
the wsbell(4) device and provide an attachment interface. To attach the
wsbell(4) device, the speaker driver must allocate and populate a
wsbelldev_attach_args structure with a pointer to the parent's device
structure as an access cookie and call config_found() to perform the
attach (see autoconf(9)).
When a bell event is received on a wsdisplay(4) device the system bell is
The wscons subsystem is implemented within the directory sys/dev/wscons.
The wsbell module itself is implement within the file
sys/dev/wscons/wsbell.c. ioctl(2) operations are listed in
ioctl(2), wsbell(4), wscons(4), wskbd(4), autoconf(9), driver(9),
intro(9), wscons(9), wsdisplay(9), wskbd(9)
NetBSD 9.1 June 30, 2017 NetBSD 9.1