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.\" Copyright (c) 2015 EMC / Isilon Storage Division
.\" All rights reserved.
.\"
.\" 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 AUTHORS AND CONTRIBUTORS ``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 AUTHORS OR CONTRIBUTORS 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.
.\"
.\" $FreeBSD$
.\"
.Dd August 24, 2015
.Dt IOATCONTROL 8
.Os
.Sh NAME
.Nm ioatcontrol
.Nd Userspace tool to test
.Xr ioat 4
.Sh SYNOPSIS
.Nm
.Ar channel_number
.Ar num_loops
.Sh DESCRIPTION
.Nm
allows one to issue some number of test operations to the
.Xr ioat 4
driver on a specific hardware channel.
.Pp
Each loop will allocate two chunks of memory, write data patterns to them,
submit a DMA request to copy one buffer to the other, and compare the contents
in the callback.
If the contents are not as expected, an error is reported.
.Sh FILES
.Pa /dev/ioat_test
.Pp
The interface between
.Nm
and
.Xr ioat 4 .
.Nm
exposes it with
.Cd hw.ioat.enable_ioat_test=1 .
.Sh SEE ALSO
.Xr ioat 4
.Sh HISTORY
The
.Xr ioat 4
driver first appeared in
.Fx 11.0 .
.Sh AUTHORS
The
.Xr ioat 4
driver and
.Nm
tool were developed by
.An \&Jim Harris Aq Mt jimharris@FreeBSD.org ,
and
.An \&Carl Delsey Aq Mt carl.r.delsey@intel.com .
This manual page was written by
.An \&Conrad Meyer Aq Mt cem@FreeBSD.org .
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