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1.\" 2.\"Copyright (c) 2010, 2011 iXsystems, Inc. 3.\"All rights reserved. 4.\" written by: Xin LI <delphij@FreeBSD.org> 5.\" 6.\"Redistribution and use in source and binary forms, with or without 7.\"modification, are permitted provided that the following conditions 8.\"are met: 9.\"1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\"2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\"THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16.\"ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\"IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\"ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19.\"FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\"DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\"OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\"HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\"LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\"OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\"SUCH DAMAGE. 26.\" 27.\" $FreeBSD$ 28.\" 29.Dd October 4, 2011 30.Dt TWS 4 31.Os 32.Sh NAME 33.Nm tws 34.Nd 3ware 9750 SATA+SAS 6Gb/s RAID controller card driver 35.Sh SYNOPSIS 36To compile this driver into the kernel, 37place the following lines in your 38kernel configuration file: 39.Bd -ragged -offset indent 40.Cd "device scbus" 41.Cd "device tws" 42.Ed 43.Pp 44Alternatively, to load the driver as a 45module at boot time, place the following line in 46.Xr loader.conf 5 : 47.Bd -literal -offset indent 48tws_load="YES" 49.Ed 50.Sh DESCRIPTION 51The 52.Nm 53driver provides support for LSI's 3ware 9750 SATA+SAS 6Gb/s RAID controller cards. 54.Pp 55These controllers feature the LSISAS2108 6Gb/s SAS RAID-on-Chip (ROC) 56and are available in 4- and 8-port configurations, supports RAID levels 570, 1, 5, 6, 10, 50 and single disk, with 96 SATA and/or SAS hard drives and SSDs. 58.Pp 59For further hardware information, see 60.Pa http://www.lsi.com/. 61.Sh HARDWARE 62The 63.Nm 64driver supports the following SATA/SAS RAID controller: 65.Pp 66.Bl -bullet -compact 67.It 68LSI's 3ware SAS 9750 series 69.El 70.Sh LOADER TUNABLES 71Tunables can be set at the 72.Xr loader 8 73prompt before booting the kernel or stored in 74.Xr loader.conf 5 . 75.Bl -tag -width "hw.tws.use_32bit_sgls" 76.It Va hw.tws.cam_depth 77The maximum queued CAM SIM requests for one controller. 78The default value is 256. 79.It Va hw.tws.enable_msi 80This tunable enables MSI support on the controller if set to a non-zero value. 81The default value is 0. 82.It Va hw.tws.queue_depth 83The maximum queued requests for one controller. 84.It Va hw.tws.use_32bit_sgls 85Limit the driver to use only 32-bit SG elements regardless whether the operating 86system is running in 64-bit mode. 87The default value is 0. 88.El 89.Sh FILES 90.Bl -tag -width ".Pa /dev/tws?" -compact 91.It Pa /dev/da? 92array/logical disk interface 93.It Pa /dev/tws? 94management interface 95.El 96.Sh DIAGNOSTICS 97Whenever the driver encounters a command failure, it prints out an error code in 98the format: 99.Qq Li "ERROR: (<error source>: <error code>):" , 100followed by a text description of the error. 101There are other error messages and warnings that the 102driver prints out, depending on the kinds of errors that it encounters. 103If the driver is compiled with 104.Dv TWS_DEBUG 105defined, it prints out a whole bunch of debug 106messages. 107.Sh SEE ALSO 108.Xr da 4 , 109.Xr scsi 4 110.Sh AUTHORS 111.An -nosplit 112The 113.Nm 114driver was written by 115.An Manjunath Ranganathaiah 116for LSI and this manual page was written by 117.An Xin LI Aq delphij@FreeBSD.org 118for iXsystems, Inc.