230 lines
6.0 KiB
Groff
230 lines
6.0 KiB
Groff
.\"
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.\" Copyright (c) 2010 Spectra Logic Corporation
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.\" Copyright (c) 2014 LSI Corp
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.\" All rights reserved.
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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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.\" without modification.
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.\" 2. Redistributions in binary form must reproduce at minimum a disclaimer
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.\" substantially similar to the "NO WARRANTY" disclaimer below
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.\" ("Disclaimer") and any redistribution must be conditioned upon
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.\" including a substantially similar Disclaimer requirement for further
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.\" binary redistribution.
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.\"
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.\" NO WARRANTY
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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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.\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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.\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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.\" HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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,
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.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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.\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGES.
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.\"
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.\" mpr driver man page.
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.\"
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.\" Author: Ken Merry <ken@FreeBSD.org>
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.\" Author: Stephen McConnell <stephen.mcconnell@lsi.com>
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.\"
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.\" $Id$
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.\" $FreeBSD$
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.\"
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.Dd May 2, 2014
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.Dt MPR 4
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.Os
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.Sh NAME
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.Nm mpr
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.Nd "LSI Fusion-MPT 3 IT/IR 12Gb/s Serial Attached SCSI/SATA driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel, 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 pci"
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.Cd "device scbus"
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.Cd "device mpr"
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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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mpr_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 Fusion-MPT 3 IT/IR
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.Tn SAS
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controllers.
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.Sh HARDWARE
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The following controllers are supported by the
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.Nm
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driver:
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.Pp
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.Bl -bullet -compact
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.It
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LSI SAS 3004 (4 Port SAS)
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.It
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LSI SAS 3008 (8 Port SAS)
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.It
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LSI SAS 3108 (8 Port SAS)
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.El
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.Sh CONFIGURATION
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To disable MSI interrupts for all
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.Nm
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driver instances, set the following tunable value in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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hw.mpr.disable_msi=1
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.Ed
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.Pp
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To disable MSI interrupts for a specific
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.Nm
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driver instance, set the following tunable value in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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dev.mpr.X.disable_msi=1
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.Ed
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.Pp
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where X is the adapter number.
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.Pp
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To disable MSI-X interrupts for all
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.Nm
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driver instances, set the following tunable value in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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hw.mpr.disable_msix=1
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.Ed
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.Pp
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To disable MSI-X interrupts for a specific
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.Nm
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driver instance, set the following tunable value in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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dev.mpr.X.disable_msix=1
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.Ed
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.Pp
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To set the maximum number of DMA chains allocated for all adapters, set
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the following variable in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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hw.mpr.max_chains=NNNN
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.Ed
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.Pp
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To set the maximum number of DMA chains allocated for a specific adapter,
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set the following variable in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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dev.mpr.X.max_chains=NNNN
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.Ed
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.Pp
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This variable may also be viewed via
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.Xr sysctl 8
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to see the maximum set for a given adapter.
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.Pp
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The current number of free chain frames may be seen via the
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dev.mpr.X.chain_free
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.Xr sysctl 8
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variable.
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.Pp
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The lowest number of free chain frames may be seen via the
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dev.mpr.X.chain_free_lowwater
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.Xr sysctl 8
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variable.
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.Pp
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The current number of active I/O commands is shown in the
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dev.mpr.X.io_cmds_active
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.Xr sysctl 8
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variable.
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.Pp
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The maximum number of active I/O commands seen since boot is shown in the
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dev.mpr.X.io_cmds_highwater
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.Xr sysctl 8
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variable.
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.Pp
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Devices can be excluded from
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.Nm
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control for all adapters by setting the following variable in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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hw.mpr.exclude_ids=Y
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.Ed
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.Pp
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where Y is the target ID of the device.
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If more than one device is to be
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excluded, target ID's are separated by commas.
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.Pp
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Devices can be excluded from
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.Nm
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control for a specific adapter by setting the following variable in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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dev.mpr.X.exclude_ids=Y
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.Ed
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.Pp
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where X is the adapter number and Y is the target ID of the device.
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If more
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than one device is to be excluded, target ID's are separated by commas.
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.Sh DEBUGGING
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To enable debugging prints from the
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.Nm
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driver, set the
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.Bd -literal -offset indent
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hw.mpr.X.debug_level
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.Ed
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.Pp
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variable, where X is the adapter number, either in
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.Xr loader.conf 5
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or via
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.Xr sysctl 8 .
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The following bits have the described effects:
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.Bd -literal -offset indent
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0x0001 Enable informational prints.
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0x0002 Enable prints for driver faults.
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0x0004 Enable prints for controller events.
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0x0008 Enable prints for controller logging.
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0x0010 Enable prints for tracing recovery operations.
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0x0020 Enable prints for parameter errors and programming bugs.
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0x0040 Enable prints for system initialization operations.
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0x0080 Enable prints for more detailed information.
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0x0100 Enable prints for user-generated commands.
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0x0200 Enable prints for device mapping.
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0x0400 Enable prints for tracing through driver functions.
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.Ed
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.Sh SEE ALSO
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.Xr cam 4 ,
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.Xr cd 4 ,
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.Xr ch 4 ,
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.Xr da 4 ,
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.Xr mps 4 ,
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.Xr mpt 4 ,
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.Xr pci 4 ,
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.Xr sa 4 ,
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.Xr scsi 4 ,
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.Xr targ 4 ,
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.Xr loader.conf 5 ,
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.Xr sysctl 8
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.Sh HISTORY
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The
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.Nm
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driver first appeared in FreeBSD 9.3.
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.Sh AUTHORS
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The
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.Nm
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driver was originally written by
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.An -nosplit
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.An Scott Long Aq Mt scottl@FreeBSD.org .
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It has been improved and tested by LSI Corporation.
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.Pp
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This man page was written by
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.An Ken Merry Aq Mt ken@FreeBSD.org
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with additional input from
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.An Stephen McConnell Aq Mt stephen.mcconnell@lsi.com .
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