1.\" Copyright (c) 2010 Weongyo Jeong 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd September 13, 2017 28.Dt SIBA 4 29.Os 30.Sh NAME 31.Nm siba 32.Nd Sonic Inc. Silicon Backplane driver 33.Sh SYNOPSIS 34To compile this driver into the kernel, add the following lines to the 35kernel configuration file: 36.Bd -ragged -offset indent 37.Cd "device bhnd" 38.Cd "device siba" 39.Ed 40.Pp 41To load the driver as a module at boot, add this line to 42.Xr loader.conf 5 : 43.Bd -literal -offset indent 44siba_load="YES" 45.Ed 46.Sh DESCRIPTION 47The 48.Nm 49driver provides 50.Xr bhnd 4 51support for devices based on the Sonic Inc. Silicon Backplane, an 52interblock communications architecture found in earlier Broadcom Home 53Networking Division wireless chipsets and embedded systems. 54.Pp 55A common interconnect connects all of the Silicon Backplane's functional 56blocks. 57These functional blocks, known as cores, use the Open Core Protocol 58(OCP) interface to communicate with agents attached to the Silicon 59Backplane. 60.Pp 61Each core can have an initiator agent that passes read and write 62requests onto the system backplane and a target agent that returns 63responses to those requests. 64Not all cores contain both an initiator and a target agent. 65Initiator agents are present in cores that contain 66host interfaces (PCI, PCMCIA), embedded processors (MIPS), 67or DMA processors associated with communications cores. 68.Sh SEE ALSO 69.Xr bcma 4 , 70.Xr bhnd 4 , 71.Xr intro 4 72.Sh HISTORY 73The 74.Nm 75device driver first appeared in 76.Fx 8.0 . 77The driver was rewritten for 78.Fx 11.0 79to support the common Broadcom 80.Xr bhnd 4 81bus interface. 82.Sh AUTHORS 83.An -nosplit 84The 85.Nm 86driver was originally written by 87.An Bruce M. Simpson Aq Mt bms@FreeBSD.org 88and 89.An Weongyo Jeong Aq Mt weongyo@FreeBSD.org . 90The driver was rewritten for 91.Fx 11.0 92by 93.An Landon Fuller Aq Mt landonf@FreeBSD.org . 94