.\" Copyright (c) 2015 Landon Fuller
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.\" $FreeBSD: head/share/man/man4/bhnd.4 301589 2016-06-08 08:50:35Z trasz $
.\"
.Dd June 3, 2016
.Dt BHND 4
.Os
.Sh NAME
.Nm bhnd
.Nd Broadcom Home Networking Division interconnect bus
.Sh SYNOPSIS
To compile this driver into the kernel,
place the following lines in your kernel configuration file:
.Bd -ragged -offset indent
.Cd "device bhnd"
.Ed
.Pp
Alternatively, to load the driver as a module at boot time,
place the following line in
.Xr loader.conf 5 :
.Bd -literal -offset indent
bhnd_load="YES"
.Ed
.Sh DESCRIPTION
The
.Nm
driver provides a unified kernel bus interface to the on-chip
interconnects used in Broadcom Home Networking Division (HND)
devices.
.Pp
The Broadcom HND device family consists of SoCs (System On a Chip)
and host-connected chipsets based on a common library of Broadcom IP
cores connected via an internal hardware bus architecture.
Drivers for these cores are implemented against the unified
.Nm
interface.
.Pp
The Sonic Inc. Silicon Backplane used in earlier HND devices is supported
by the
.Xr siba 4
BHND driver.
.Pp
The ARM AMBA-based interconnect used in later HND devices is supported by
the
.Xr bcma 4
BHND driver.
.Sh SEE ALSO
.Xr bhndb 4 ,
.Xr bcma 4 ,
.Xr siba 4
.Sh HISTORY
The
.Nm
device driver first appeared in
.Fx 11.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Landon Fuller Aq Mt landonf@FreeBSD.org .