119 lines
3.8 KiB
Groff
119 lines
3.8 KiB
Groff
.\"
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.\"Copyright (c) 2010, 2011 iXsystems, Inc.
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.\"All rights reserved.
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.\" written by: Xin LI <delphij@FreeBSD.org>
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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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.\"
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.\"THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\"ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\"IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\"ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\"FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\"DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\"OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\"HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\"LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\"OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\"SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd October 4, 2011
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.Dt TWS 4
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.Os
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.Sh NAME
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.Nm tws
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.Nd 3ware 9750 SATA+SAS 6Gb/s RAID controller card driver
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device scbus"
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.Cd "device tws"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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tws_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for LSI's 3ware 9750 SATA+SAS 6Gb/s RAID controller cards.
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.Pp
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These controllers feature the LSISAS2108 6Gb/s SAS RAID-on-Chip (ROC)
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and are available in 4- and 8-port configurations, supports RAID levels
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0, 1, 5, 6, 10, 50 and single disk, with 96 SATA and/or SAS hard drives and SSDs.
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.Pp
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For further hardware information, see
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.Pa http://www.lsi.com/.
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.Sh HARDWARE
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The
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.Nm
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driver supports the following SATA/SAS RAID controller:
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.Pp
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.Bl -bullet -compact
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.It
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LSI's 3ware SAS 9750 series
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.El
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.Sh LOADER TUNABLES
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Tunables can be set at the
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.Xr loader 8
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prompt before booting the kernel or stored in
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.Xr loader.conf 5 .
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.Bl -tag -width "hw.tws.use_32bit_sgls"
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.It Va hw.tws.cam_depth
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The maximum queued CAM SIM requests for one controller.
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The default value is 256.
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.It Va hw.tws.enable_msi
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This tunable enables MSI support on the controller if set to a non-zero value.
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The default value is 0.
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.It Va hw.tws.queue_depth
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The maximum queued requests for one controller.
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.It Va hw.tws.use_32bit_sgls
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Limit the driver to use only 32-bit SG elements regardless whether the operating
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system is running in 64-bit mode.
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The default value is 0.
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.El
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.Sh FILES
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.Bl -tag -width ".Pa /dev/tws?" -compact
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.It Pa /dev/da?
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array/logical disk interface
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.It Pa /dev/tws?
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management interface
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.El
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.Sh DIAGNOSTICS
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Whenever the driver encounters a command failure, it prints out an error code in
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the format:
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.Qq Li "ERROR: (<error source>: <error code>):" ,
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followed by a text description of the error.
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There are other error messages and warnings that the
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driver prints out, depending on the kinds of errors that it encounters.
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If the driver is compiled with
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.Dv TWS_DEBUG
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defined, it prints out a whole bunch of debug
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messages.
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.Sh SEE ALSO
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.Xr da 4 ,
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.Xr scsi 4
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Manjunath Ranganathaiah
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for LSI and this manual page was written by
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.An Xin LI Aq Mt delphij@FreeBSD.org
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for iXsystems, Inc.
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