1.\" $NetBSD: gsckbc.4,v 1.3 2022/06/13 17:26:34 andvar Exp $ 2.\" 3.\" Copyright (c) 2002 Jochen Kunz. 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. The name of Jochen Kunz may not be used to endorse or promote 15.\" products derived from this software without specific prior 16.\" written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY JOCHEN KUNZ 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JOCHEN KUNZ 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.Dd February 17, 2017 30.Dt GSCKBC 4 hppa 31.Os 32.Sh NAME 33.Nm gsckbc 34.Nd GSC PS/2 keyboard and mouse interface 35.Sh SYNOPSIS 36.Cd "gsckbc* at gsc?" 37.Cd "pckbd* at gsckbc?" 38.Cd "pms* at gsckbc?" 39.Sh DESCRIPTION 40The 41.Nm 42device is a machine dependent front end to the 43.Xr pckbport 9 44interface. 45It attaches to the GSC PS/2 keyboard and mouse interface found in LASI chips. 46.Sh DIAGNOSTICS 47.Bl -diag 48.It "gsckbc_attach: can't map I/O space" 49The driver was not able to map the device registers during attachment. 50The device will not be usable. 51.It "can't find master device" 52An error occurred during attachment of the keyboard port so the mouse port 53can't be attached too. 54.El 55.Sh SEE ALSO 56.Xr hppa/gsc 4 , 57.Xr hppa/intro 4 , 58.Xr hppa/io 4 , 59.Xr hppa/lasi 4 , 60.Xr pckbport 9 61.Sh HISTORY 62The 63.Nm 64driver appeared in 65.Nx 2.0 . 66.Sh AUTHORS 67.An Jochen Kunz 68.Sh BUGS 69Actually the two PS/2 ports are a single device and share a single interrupt. 70The firmware lists them as individual devices in the firmware device tree. 71This illusion is kept to map the firmware device tree as close as possible 72to the kernel device tree. 73The first device is called master, gets the interrupt and the other is the 74slave. 75Assumption: Master attaches first, gets the interrupt and has lower HPA. 76So it is important that the master device, usually the keyboard port, 77attaches first to make the slave, usually the mouse port, usable. 78