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.\" $NetBSD: twe.4,v 1.4 2000/11/26 17:44:12 ad Exp $
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.\"
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.\" Copyright (c) 2000 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Andrew Doran.
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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. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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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 THE FOUNDATION OR CONTRIBUTORS
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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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.\"
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.Dd October 17, 2000
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.Dt TWE 4
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.Os
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.Sh NAME
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.Nm twe
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.Nd
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.Tn 3ware Escalade RAID controller driver
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.Sh SYNOPSIS
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.Cd "twe* at pci? dev ? function ?"
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.Cd options TWE_MAX_QUEUECNT=n
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.Cd options TWE_MAX_PU_QUEUECNT=n
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the
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.Tn 3ware Escalade
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family of RAID controllers.
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Attached disk arrays are supported by the
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.Nm ld
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driver.
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.Pp
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The following kernel configuration options are available:
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.Bl -ohang
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.It Cd options TWE_MAX_QUEUECNT=n
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Set the maximum queued command count to
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.Ar n
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commands.
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The default value is 128.
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The maximum value that the underlying hardware can support is 255.
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.It Cd options TWE_MAX_PI_QUEUECNT=n
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Set the maximum per-unit queued command count to
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.Ar n
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commands.
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The default value is 32.
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.El
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.Sh SEE ALSO
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.Xr intro 4 ,
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.Xr ld 4
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.Sh AUTHOR
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The
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.Nm
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driver was written by
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by Andrew Doran
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.Aq ad@netbsd.org .
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Some parts of the driver are derived from code written by Micheal Smith
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.Aq msmith@freebsd.org .
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.Sh HISTORY
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The
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.Nm twe
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driver first appeared in
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.Nx 1.6 .
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