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.Dd October 4, 2011 28.Dt TWS 4 29.Os 30.Sh NAME 31.Nm tws 32.Nd 3ware 9750 SATA+SAS 6Gb/s RAID controller card driver 33.Sh SYNOPSIS 34To compile this driver into the kernel, 35place the following lines in your 36kernel configuration file: 37.Bd -ragged -offset indent 38.Cd "device scbus" 39.Cd "device tws" 40.Ed 41.Pp 42Alternatively, to load the driver as a 43module at boot time, place the following line in 44.Xr loader.conf 5 : 45.Bd -literal -offset indent 46tws_load="YES" 47.Ed 48.Sh DESCRIPTION 49The 50.Nm 51driver provides support for LSI's 3ware 9750 SATA+SAS 6Gb/s RAID controller cards. 52.Pp 53These controllers feature the LSISAS2108 6Gb/s SAS RAID-on-Chip (ROC) 54and are available in 4- and 8-port configurations, supports RAID levels 550, 1, 5, 6, 10, 50 and single disk, with 96 SATA and/or SAS hard drives and SSDs. 56.Pp 57For further hardware information, see 58.Pa http://www.lsi.com/. 59.Sh HARDWARE 60The 61.Nm 62driver supports the following SATA/SAS RAID controller: 63.Pp 64.Bl -bullet -compact 65.It 66LSI's 3ware SAS 9750 series 67.El 68.Sh LOADER TUNABLES 69Tunables can be set at the 70.Xr loader 8 71prompt before booting the kernel or stored in 72.Xr loader.conf 5 . 73.Bl -tag -width "hw.tws.use_32bit_sgls" 74.It Va hw.tws.cam_depth 75The maximum queued CAM SIM requests for one controller. 76The default value is 256. 77.It Va hw.tws.enable_msi 78This tunable enables MSI support on the controller if set to a non-zero value. 79The default value is 0. 80.It Va hw.tws.queue_depth 81The maximum queued requests for one controller. 82.It Va hw.tws.use_32bit_sgls 83Limit the driver to use only 32-bit SG elements regardless whether the operating 84system is running in 64-bit mode. 85The default value is 0. 86.El 87.Sh FILES 88.Bl -tag -width ".Pa /dev/tws?" -compact 89.It Pa /dev/da? 90array/logical disk interface 91.It Pa /dev/tws? 92management interface 93.El 94.Sh DIAGNOSTICS 95Whenever the driver encounters a command failure, it prints out an error code in 96the format: 97.Qq Li "ERROR: (<error source>: <error code>):" , 98followed by a text description of the error. 99There are other error messages and warnings that the 100driver prints out, depending on the kinds of errors that it encounters. 101If the driver is compiled with 102.Dv TWS_DEBUG 103defined, it prints out a whole bunch of debug 104messages. 105.Sh SEE ALSO 106.Xr da 4 , 107.Xr scsi 4 108.Sh AUTHORS 109.An -nosplit 110The 111.Nm 112driver was written by 113.An Manjunath Ranganathaiah 114for LSI and this manual page was written by 115.An Xin LI Aq Mt delphij@FreeBSD.org 116for iXsystems, Inc. 117