1.\" 2.\" SPDX-License-Identifier: BSD-2-Clause 3.\" 4.\" Copyright (c) 2019 Andriy Gapon <avg@FreeBSD.org> 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.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.\" $FreeBSD$ 28.\" 29.Dd October 11, 2019 30.Dt SUPERIO 4 31.Os 32.Sh NAME 33.Nm superio 34.Nd Super I/O controller and bus driver 35.Sh SYNOPSIS 36To compile this driver into the kernel, 37place the following line in your 38kernel configuration file: 39.Bd -ragged -offset indent 40.Cd "device superio" 41.Ed 42.Pp 43Alternatively, to load the driver as a 44module at boot time, place the following line in 45.Xr loader.conf 5 : 46.Bd -literal -offset indent 47superio_load="YES" 48.Ed 49.Sh DESCRIPTION 50Super I/O is an I/O controller that combines various low-bandwidth devices 51that can be functionally unrelated otherwise. 52A typical Super I/O can contain devices such as 53.Pp 54.Bl -bullet -compact 55.It 56a floppy disk controller 57.It 58a parallel port 59.It 60a serial port 61.It 62a PS/2 mouse and keyboard controller 63.It 64a hardware monitoring controller 65.It 66a watchdog timer 67.It 68a controller for general purpose input-output 69.El 70.Pp 71The 72.Nm 73driver provides support for devices residing in the Super I/O controller 74that can only be accessed or discovered using the controller's interface. 75Some of the Super I/O devices have standardized interfaces. 76Such devices either use well-known legacy resources or they are advertised 77via ACPI or both. 78They can be configured either using ISA bus hints or they are auto-configured by 79.Xr acpi 4 . 80The 81.Nm 82driver is not designed to interact with that kind of devices. 83They can be handled by their respective drivers without any knowledge of the 84Super I/O specifics. 85For instance, 86.Xr fdc 4 87provides access to the floppy disk controller. 88.Pp 89There are other Super I/O devices that do not have any standardized interface. 90Drivers for those devices can be written using facilities of the 91.Nm 92driver. 93.Pp 94The driver itself attaches to the ISA bus as all supported controllers are 95accessed via LPC I/O ports. 96.Pp 97The 98.Nm 99driver is unusual as it is both a controller driver for a variety of Super I/O 100controllers and a bus driver for supported devices in those controllers. 101.Sh HARDWARE 102The 103.Nm 104driver supports a multitude of Super I/O controllers produced by Nuvoton, 105formerly known as Winbond, and ITE, namely: 106.Pp 107.Bl -bullet -compact 108.It 109Fintek F81803 110.It 111Fintek F81865 112.It 113Nuvoton NCT5104D/NCT6102D/NCT6106D rev. A and B+ 114.It 115Nuvoton NCT5585D 116.It 117Nuvoton NCT6116D 118.It 119Nuvoton NCT6775 120.It 121Nuvoton NCT6776 122.It 123Nuvoton NCT6779 124.It 125Nuvoton NCT6791 126.It 127Nuvoton NCT6792 128.It 129Nuvoton NCT6793 130.It 131Nuvoton NCT6795 132.It 133Nuvoton NCT6796D-E 134.It 135Winbond 83627HF/F/HG/G/S/THF/EHF/DHG/UHG/DHG-P 136.It 137Winbond 83637HF 138.It 139Winbond 83667HG/HG-B 140.It 141Winbond 83687THF 142.It 143Winbond 83697HF/UG 144.El 145.Sh SEE ALSO 146.Xr superio 9 147.Sh HISTORY 148The 149.Nm 150driver was written by 151.An Andriy Gapon Aq Mt avg@FreeBSD.org . 152