.\"	$NetBSD: elanpex.4,v 1.9 2017/02/17 22:24:46 christos Exp $
.\"
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.\" Copyright (c) 2008 David Young.  All rights reserved.
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.\" Written by David Young.
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.Dd February 17, 2017
.Dt ELANPEX 4 i386
.Os
.Sh NAME
.Nm elanpex
.Nd AMD Elan SC520 PCI Exception Instrumentation
.Sh SYNOPSIS
.Cd "elansc* at mainbus? bus ?"
.Cd "elanpex* at elansc?"
.Sh DESCRIPTION
The
.Nm
driver supports the PCI exception-reporting facilities of the AMD
Elan SC520 microcontroller's integrated PCI host controller.
.Sh DIAGNOSTICS
.Bl -ohang
.It Em PCI master exceptions
.Pp
The host controller may originate a transaction of type
.Em %s
on bus address
.Em %x
that fails for the following reasons:
.Bl -diag
.It elanpex0: %s %x master retry timeout
.It elanpex0: %s %x master target abort
.It elanpex0: %s %x master abort
.It elanpex0: %s %x master system error
.It elanpex0: %s %x master received parity error
.It elanpex0: %s %x master detected parity error
.El
.Pp
Transaction types include
.Bl -diag
.It i/o read
.It i/o write
.It memory rd
.It memory wr
.It cfg rd
.It cfg wr
.El
.It Em PCI target exceptions
.Pp
The host controller may be the target of a failed transaction of type
.Em %s
at bus address
.Em %x .
Failures may occur for the following reasons:
.Bl -diag
.It elanpex0: %s %x target delayed txn timeout
.It elanpex0: %s %x target address parity
.It elanpex0: %s %x target data parity
.El
.Pp
Transaction types are alike to failed master exceptions.
.El
.Sh SEE ALSO
.Xr i386/elanpar 4 ,
.Xr i386/elansc 4 ,
.Xr dmesg 8 ,
.Xr syslogd 8
.Sh HISTORY
The
.Nm
device first appeared in
.Nx 5.0 .
.Sh AUTHORS
The
.Nm
driver was written by
.An David Young Aq Mt dyoung@NetBSD.org .