1.\" $OpenBSD: intro.4,v 1.2 2022/03/31 17:27:22 naddy Exp $ 2.\" 3.\" Copyright (c) 1983, 1986, 1991 Regents of the University of California. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.Dd $Mdocdate: March 31 2022 $ 31.Dt INTRO 4 octeon 32.Os 33.Sh NAME 34.Nm intro 35.Nd introduction to special files and hardware support 36.Sh DESCRIPTION 37The manual pages in section 4 describe the special files, 38related driver functions, and networking support 39available in the system. 40In this part of the manual, the SYNOPSIS section of 41each configurable device gives a sample specification 42for use in constructing a system description for the 43.Xr config 8 44program. 45The DIAGNOSTICS section lists messages which may appear on the console 46and/or in the system error log 47.Pa /var/log/messages 48due to errors in device operation; 49see 50.Xr syslogd 8 51for more information. 52.Pp 53This section contains both devices 54which may be configured into the system 55and network related information. 56The networking support is introduced in 57.Xr netintro 4 . 58.Sh DEVICE SUPPORT 59This section describes the hardware supported on the 60octeon 61platform. 62Software support for these devices comes in two forms. 63A hardware device may be supported with a character or block 64.Em device driver , 65or it may be used within the networking subsystem and have a 66.Em network interface driver . 67Block and character devices are accessed through files in the file 68system of a special type; see 69.Xr mknod 8 . 70Network interfaces are indirectly accessed through the interprocess 71communication facilities provided by the system; see 72.Xr socket 2 . 73.Pp 74A hardware device is identified to the system at configuration time 75and the appropriate device or network interface driver is then compiled 76into the system. 77When the resultant system is booted, the autoconfiguration facilities 78in the system probe for the device and, if found, enable the software 79support for it. 80If a device does not respond at autoconfiguration 81time, it is not accessible at any time afterwards. 82To enable a device which did not autoconfigure, 83the system will have to be rebooted. 84.Pp 85The autoconfiguration system is described in 86.Xr autoconf 4 . 87.Sh LIST OF DEVICES 88A complete list of available devices is contained within the pages 89describing the system buses and controllers. 90For example, a PCI device would be listed in the 91.Xr pci 4 92man page. 93The following buses and controllers list these devices: 94.Pp 95.Bl -tag -width "cardbus(4)XX" -offset 3n -compact 96.It Xr onewire 4 971-Wire bus 98.It Xr pci 4 99introduction to PCI bus support 100.It Xr usb 4 101introduction to Universal Serial Bus support 102.El 103.Sh SEE ALSO 104.Xr autoconf 4 , 105.Xr config 8 106.Sh HISTORY 107The 108octeon 109.Nm intro 110first appeared in 111.Ox 7.0 . 112