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+.\" $NetBSD: geodecntr.4,v 1.3 2009/05/27 19:24:00 snj Exp $
+.\"
+.\" Copyright (c) 2006 Frank Kardel.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd June 24, 2006
+.Dt GEODECNTR 4
+.Os
+.Sh NAME
+.Nm geodecntr
+.Nd AMD Geode SC1100 High Resolution Counter
+.Sh SYNOPSIS
+.Cd "geodegcb* at pci? dev ? function ?"
+.Cd "geodecntr* at geodegcb?"
+.Sh DESCRIPTION
+The
+.Nm
+driver supports the
+.Tn AMD
+SC1100
+controllers
+and provides a timecounter implementation for the 27MHz
+counter.
+.Pp
+The other timing sources in the SC1100 suffer from
+power management features that prohibit i8254 and TSC
+from being used for time keeping.
+This
+.Nm
+driver
+makes the 27MHz counter available for the
+.Xr timecounter 9
+framework.
+.Sh SEE ALSO
+.Xr timecounter 9