1.\" 2.\" Copyright (c) 2010 Spectra Logic Corporation 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions, and the following disclaimer, 10.\" without modification. 11.\" 2. Redistributions in binary form must reproduce at minimum a disclaimer 12.\" substantially similar to the "NO WARRANTY" disclaimer below 13.\" ("Disclaimer") and any redistribution must be conditioned upon 14.\" including a substantially similar Disclaimer requirement for further 15.\" binary redistribution. 16.\" 17.\" NO WARRANTY 18.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19.\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 21.\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22.\" HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27.\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGES. 29.\" 30.\" mps driver man page. 31.\" 32.\" Author: Ken Merry <ken@FreeBSD.org> 33.\" 34.\" $Id: //depot/SpectraBSD/head/share/man/man4/mps.4#4 $ 35.\" $FreeBSD: src/share/man/man4/mps.4,v 1.3 2010/10/07 21:56:10 ken Exp $ 36.\" 37.Dd September 13, 2010 38.Dt MPS 4 39.Os 40.Sh NAME 41.Nm mps 42.Nd LSI Fusion-MPT 2 Serial Attached SCSI driver 43.Sh SYNOPSIS 44To compile this driver into your kernel, 45place the following lines in your kernel configuration file: 46.Bd -ragged -offset indent 47.Cd "device scbus" 48.Cd "device mps" 49.Ed 50.Pp 51Or, to load the driver as a module at boot, place the following line in 52.Xr loader.conf 5 : 53.Bd -literal -offset indent 54mps_load="YES" 55.Ed 56.Sh DESCRIPTION 57The 58.Nm 59driver provides support for LSI Logic Fusion-MPT 2 60.Tn SAS 61controllers. 62.Sh HARDWARE 63The following controllers are supported by the 64.Nm 65driver 66.Pp 67.Bl -bullet -compact 68.It 69LSI Logic SAS2004 (4 Port 70.Tn SAS ) 71.It 72LSI Logic SAS2008 (8 Port 73.Tn SAS ) 74.It 75LSI Logic SAS2108 (8 Port 76.Tn SAS ) 77.It 78LSI Logic SAS2116 (16 Port 79.Tn SAS ) 80.It 81LSI Logic SAS2208 (8 Port 82.Tn SAS ) 83.El 84.Sh CONFIGURATION 85To disable MSI interrupts for all 86.Nm 87driver instances, set the following tunable value in 88.Xr loader.conf 5 : 89.Bd -literal -offset indent 90hw.mps.disable_msi=1 91.Ed 92.Pp 93To disable MSI-X interrupts for all 94.Nm 95driver instances, set the following tunable value in 96.Xr loader.conf 5 : 97.Bd -literal -offset indent 98hw.mps.disable_msix=1 99.Ed 100.Pp 101To allow the driver to send multiple task management commands (like abort, 102LUN reset, etc.), set the following variable: 103.Bd -literal -offset indent 104hw.mps.X.allow_multiple_tm_cmds=1 105.Ed 106.Pp 107via 108.Xr loader.conf 5 109or 110.Xr sysctl 8 , 111where X is the adapter number. 112By default the driver only sends one task management command at a time, to 113avoid causing a potential controller lock-up. 114.Sh DEBUGGING 115To enable debugging prints from the 116.Nm 117driver, set the 118.Bd -literal -offset indent 119hw.mps.X.debug_level 120.Ed 121.Pp 122variable, where X is the adapter number, either in 123.Xr loader.conf 5 124or via 125.Xr sysctl 8 . 126The following bits have the described effects: 127.Bl -tag -offset indent 128.It 0x01 129Enable informational prints. 130.It 0x02 131Enable tracing prints. 132.It 0x04 133Enable prints for driver faults. 134.It 0x08 135Enable prints for controller events. 136.El 137.Sh SEE ALSO 138.Xr cd 4 , 139.Xr ch 4 , 140.Xr da 4 , 141.Xr mpt 4 , 142.Xr pci 4 , 143.Xr sa 4 , 144.Xr scsi 4 , 145.Xr targ 4 146.Sh BUGS 147This driver is still in development, it has only been tested on the amd64 148architecture and has some known shortcomings: 149.Bl -bullet -compact 150.It 151No IR (Integrated RAID) support. 152.It 153No userland utility support (e.g. 154.Xr mptutil 8 ) . 155.It 156Sometimes the driver gets into a state where devices arrive and depart multiple 157times, without user intervention. 158.It 159The error recovery code isn't complete. 160.El 161.Sh HISTORY 162The 163.Nm 164driver first appeared in 165.Fx 9.0 . 166.Sh AUTHORS 167.An -nosplit 168The 169.Nm 170driver was originally written by 171.An Scott Long Aq scottl@FreeBSD.org . 172This man page was written by 173.An Ken Merry Aq ken@FreeBSD.org . 174