78 lines
2.9 KiB
Groff
78 lines
2.9 KiB
Groff
.\" $NetBSD: gsckbc.4,v 1.1 2004/09/22 16:38:26 jkunz Exp $
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.\"
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.\" Copyright (c) 2002 Jochen Kunz.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of Jochen Kunz may not be used to endorse or promote
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.\" products derived from this software without specific prior
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.\" written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY JOCHEN KUNZ
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JOCHEN KUNZ
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.Dd August 20, 2004
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.Dt GSCKBC 4 hp700
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.Os
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.Sh NAME
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.Nm gsckbc
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.Nd GSC PS/2 keyboard and mouse interface
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.Sh SYNOPSIS
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.Cd "gsckbc* at gsc?"
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.Cd "pckbd* at gsckbc?"
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.Cd "pms* at gsckbc?"
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.Sh DESCRIPTION
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The
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.Nm
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device is a machine dependent front end to the
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.Xr pckbport 9
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interface.
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It attaches to the GSC PS/2 keyboard and mouse interface found in LASI chips.
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "gsckbc_attach: can't map I/O space"
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The driver was not able to map the device registers during attachment.
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The device will not be usable.
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.It "can't find master device"
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An error occured during attachment of the keyboard port so the mouse port
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can't be attached too.
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.El
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.Sh SEE ALSO
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.Xr gsc 4 ,
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.Xr intro 4 ,
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.Xr io 4 ,
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.Xr lasi 4 ,
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.Xr pckbport 9
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.Sh HISTORY
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The
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.Nm
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driver appeared in
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.Nx 2.0 .
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.Sh AUTHORS
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.An Jochen Kunz
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.Sh BUGS
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Actually the two PS/2 ports are a single device and share a single interrupt.
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The firmware lists them as individual devices in the firmware device tree.
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This illusion is kept to map the firmware device tree as close as possible
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to the kernel device tree.
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The first device is caled master, gets the interrupt and the other is the
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slave.
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Assumption: Master attaches first, gets the interrupt and has lower HPA.
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So it is important that the master device, usually the keyboard port,
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attaches first to make the slave, usually the mouse port, usable.
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