142c8cbe1SRafal Jaworowski.\" 242c8cbe1SRafal Jaworowski.\" Copyright (c) 2010 The FreeBSD Foundation 342c8cbe1SRafal Jaworowski.\" All rights reserved. 442c8cbe1SRafal Jaworowski.\" 542c8cbe1SRafal Jaworowski.\" This software was developed by Semihalf under sponsorship from 642c8cbe1SRafal Jaworowski.\" the FreeBSD Foundation. 742c8cbe1SRafal Jaworowski.\" 842c8cbe1SRafal Jaworowski.\" Redistribution and use in source and binary forms, with or without 942c8cbe1SRafal Jaworowski.\" modification, are permitted provided that the following conditions 1042c8cbe1SRafal Jaworowski.\" are met: 1142c8cbe1SRafal Jaworowski.\" 1. Redistributions of source code must retain the above copyright 1242c8cbe1SRafal Jaworowski.\" notice, this list of conditions and the following disclaimer. 1342c8cbe1SRafal Jaworowski.\" 2. Redistributions in binary form must reproduce the above copyright 1442c8cbe1SRafal Jaworowski.\" notice, this list of conditions and the following disclaimer in the 1542c8cbe1SRafal Jaworowski.\" documentation and/or other materials provided with the distribution. 1642c8cbe1SRafal Jaworowski.\" 1742c8cbe1SRafal Jaworowski.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1842c8cbe1SRafal Jaworowski.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1942c8cbe1SRafal Jaworowski.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2042c8cbe1SRafal Jaworowski.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2142c8cbe1SRafal Jaworowski.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2242c8cbe1SRafal Jaworowski.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2342c8cbe1SRafal Jaworowski.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2442c8cbe1SRafal Jaworowski.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2542c8cbe1SRafal Jaworowski.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2642c8cbe1SRafal Jaworowski.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2742c8cbe1SRafal Jaworowski.\" SUCH DAMAGE. 2842c8cbe1SRafal Jaworowski.\" 2942c8cbe1SRafal Jaworowski.\" $FreeBSD$ 3042c8cbe1SRafal Jaworowski.\" 3142c8cbe1SRafal Jaworowski.Dd July 12, 2010 3242c8cbe1SRafal Jaworowski.Dt SIMPLEBUS 4 3342c8cbe1SRafal Jaworowski.Os 3442c8cbe1SRafal Jaworowski.Sh NAME 3542c8cbe1SRafal Jaworowski.Nm simplebus 3642c8cbe1SRafal Jaworowski.Nd ePAPR simple-bus driver 3742c8cbe1SRafal Jaworowski.Sh SYNOPSIS 3842c8cbe1SRafal Jaworowski.Cd "options FDT" 3942c8cbe1SRafal Jaworowski.Sh DESCRIPTION 4042c8cbe1SRafal JaworowskiThis bus driver is dedicated for the 4142c8cbe1SRafal Jaworowski.Pa simple-bus 4242c8cbe1SRafal Jaworowskinode of a flattened device tree compliant with the 4342c8cbe1SRafal Jaworowski.Pa ePAPR 4442c8cbe1SRafal Jaworowskispecification. 4542c8cbe1SRafal Jaworowski.Pp 4642c8cbe1SRafal JaworowskiThe 4742c8cbe1SRafal Jaworowski.Nm 4842c8cbe1SRafal Jaworowskientity does not represent any physical element by itself, it is rather an 4942c8cbe1SRafal Jaworowskiumbrella node grouping integrated on-chip peripherals like interrupt 5042c8cbe1SRafal Jaworowskicontroller, connectivity controllers, accelerating engines and so on. 5142c8cbe1SRafal Jaworowski.Pp 5242c8cbe1SRafal JaworowskiThe driver is generic and common for all flattened device tree nodes claiming 5342c8cbe1SRafal Jaworowski.Pa simple-bus 5442c8cbe1SRafal Jaworowskicompatibility. It iterates over direct descendants of the 5542c8cbe1SRafal Jaworowski.Pa simple-bus 5642c8cbe1SRafal Jaworowskinode, instantiates newbus children and assigns resources to them, based on the 5742c8cbe1SRafal Jaworowskiconfiguration data retrieved from the nodes properties in 5842c8cbe1SRafal Jaworowski.Xr fdt 4 . 5942c8cbe1SRafal Jaworowski.Pp 6042c8cbe1SRafal JaworowskiNote the 6142c8cbe1SRafal Jaworowski.Nm 6242c8cbe1SRafal Jaworowskidoes not manage device resources and passes through any requests to the 63*50d922a0SGlen Barber.Xr fdtbus 4 64*50d922a0SGlen Barberlayer. 6542c8cbe1SRafal Jaworowski.Sh SEE ALSO 6642c8cbe1SRafal Jaworowski.Xr fdt 4 , 6742c8cbe1SRafal Jaworowski.Xr fdtbus 4 , 68*50d922a0SGlen Barber.Xr openfirm 4 6942c8cbe1SRafal Jaworowski.Sh STANDARDS 7042c8cbe1SRafal JaworowskiPower.org Standard for Embedded Power Architecture Platform Requirements 7142c8cbe1SRafal Jaworowski.Pq Vt ePAPR . 7242c8cbe1SRafal Jaworowski.Sh HISTORY 7342c8cbe1SRafal JaworowskiThe 7442c8cbe1SRafal Jaworowski.Nm 7542c8cbe1SRafal Jaworowskisupport first appeared in 7642c8cbe1SRafal Jaworowski.Fx 9.0 . 7742c8cbe1SRafal Jaworowski.Sh AUTHORS 7842c8cbe1SRafal JaworowskiThe 7942c8cbe1SRafal Jaworowski.Nm 8042c8cbe1SRafal Jaworowskisupport was developed by Semihalf under sponsorship from the FreeBSD 8142c8cbe1SRafal JaworowskiFoundation. This manual page was written by 8242c8cbe1SRafal Jaworowski.An Rafal Jaworowski . 83