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 January 8, 2010 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, 35place the following lines in your kernel configuration file: 36.Bd -ragged -offset indent 37.Cd "device siba" 38.Ed 39.Pp 40Alternatively, to load the driver as a module at boot time, 41place the following line in 42.Xr loader.conf 5 : 43.Bd -literal -offset indent 44siba_load="YES" 45.Ed 46.Sh DESCRIPTION 47The 48.Nm 49driver supports the Sonic Inc. Silicon Backplane, the interblock 50communications architecture that can be found in most Broadcom 51wireless NICs. 52.Pp 53A bus connects all of the Silicon Backplane's functional blocks. 54These functional blocks, known as cores, use the Open Core Protocol 55(OCP) interface to communicate with agents attached to the Silicon 56Backplane. 57.Pp 58Each NIC uses a chip from the same chip family. 59Each member of the family contains a different set of cores, but 60shares basic architectural features such as address space definition, 61interrupt and error architecture, and backplane register definitions. 62.Pp 63Each core can have an initiator agent that passes read and write 64requests onto the system backplane and a target agent that returns 65responses to those requests. 66Not all cores contain both an initiator and a target agent. 67Initiator agents are present in cores that contain 68host interfaces (PCI, PCMCIA), embedded processors (MIPS), 69or DMA processors associated with communications cores. 70.Pp 71All cores other than PCMCIA have a target agent. 72.Sh SEE ALSO 73.Xr bwn 4 74.Sh HISTORY 75The 76.Nm 77device driver first appeared in 78.Fx 8.0 . 79.Sh AUTHORS 80.An -nosplit 81The 82.Nm 83driver was written by 84.An Bruce M. Simpson 85.Aq bms@FreeBSD.org 86and 87.An Weongyo Jeong 88.Aq weongyo@FreeBSD.org . 89.Sh CAVEATS 90Host mode is not supported at this moment. 91