/share/man/man4/simplebus.4
https://bitbucket.org/freebsd/freebsd-head/ · Forth · 82 lines · 82 code · 0 blank · 0 comment · 3 complexity · 6fe292badad9a42110767de27b90d0ab MD5 · raw file
- .\"
- .\" Copyright (c) 2010 The FreeBSD Foundation
- .\" All rights reserved.
- .\"
- .\" This software was developed by Semihalf under sponsorship from
- .\" the FreeBSD Foundation.
- .\"
- .\" Redistribution and use in source and binary forms, with or without
- .\" modification, are permitted provided that the following conditions
- .\" are met:
- .\" 1. Redistributions of source code must retain the above copyright
- .\" notice, this list of conditions and the following disclaimer.
- .\" 2. Redistributions in binary form must reproduce the above copyright
- .\" notice, this list of conditions and the following disclaimer in the
- .\" documentation and/or other materials provided with the distribution.
- .\"
- .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- .\" SUCH DAMAGE.
- .\"
- .\" $FreeBSD$
- .\"
- .Dd July 12, 2010
- .Dt SIMPLEBUS 4
- .Os
- .Sh NAME
- .Nm simplebus
- .Nd ePAPR simple-bus driver
- .Sh SYNOPSIS
- .Cd "options FDT"
- .Sh DESCRIPTION
- This bus driver is dedicated for the
- .Pa simple-bus
- node of a flattened device tree compliant with the
- .Pa ePAPR
- specification.
- .Pp
- The
- .Nm
- entity does not represent any physical element by itself, it is rather an
- umbrella node grouping integrated on-chip peripherals like interrupt
- controller, connectivity controllers, accelerating engines and so on.
- .Pp
- The driver is generic and common for all flattened device tree nodes claiming
- .Pa simple-bus
- compatibility. It iterates over direct descendants of the
- .Pa simple-bus
- node, instantiates newbus children and assigns resources to them, based on the
- configuration data retrieved from the nodes properties in
- .Xr fdt 4 .
- .Pp
- Note the
- .Nm
- does not manage device resources and passes through any requests to the
- .Xr fdtbus 4
- layer.
- .Sh SEE ALSO
- .Xr fdt 4 ,
- .Xr fdtbus 4 ,
- .Xr openfirm 4
- .Sh STANDARDS
- Power.org Standard for Embedded Power Architecture Platform Requirements
- .Pq Vt ePAPR .
- .Sh HISTORY
- The
- .Nm
- support first appeared in
- .Fx 9.0 .
- .Sh AUTHORS
- The
- .Nm
- support was developed by Semihalf under sponsorship from the FreeBSD
- Foundation. This manual page was written by
- .An Rafal Jaworowski .