327f2e6c56
Reviewed by: ken, scottl, asomers, ambrisko, mav Approved by: ken, mav MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D10861
395 lines
11 KiB
Groff
395 lines
11 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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.\" Copyright (c) 2015-2017 Avago Technologies
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.\" Copyright (c) 2015-2017 Broadcom Ltd.
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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 <slm@FreeBSD.org>
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.\"
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.\" $Id$
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.\" $FreeBSD$
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.\"
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.Dd May 25, 2017
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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 3/3.5 IT/IR 12Gb/s Serial Attached SCSI/SATA/PCIe driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel, place these lines in the kernel
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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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The driver can be loaded as a module at boot time by placing this 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 Broadcom Ltd./Avago Tech (LSI)
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Fusion-MPT 3/3.5 IT/IR
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.Tn SAS/PCIe
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controllers.
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.Sh HARDWARE
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These 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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Broadcom Ltd./Avago Tech (LSI) SAS 3004 (4 Port SAS)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3008 (8 Port SAS)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3108 (8 Port SAS)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3216 (16 Port SAS)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3224 (24 Port SAS)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3316 (16 Port SAS)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3324 (24 Port SAS)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3408 (8 Port SAS/PCIe)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3416 (16 Port SAS/PCIe)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3508 (8 Port SAS/PCIe)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3516 (16 Port SAS/PCIe)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3616 (16 Port SAS/PCIe)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3708 (8 Port SAS/PCIe)
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.It
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Broadcom Ltd./Avago Tech (LSI) SAS 3716 (16 Port SAS/PCIe)
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.El
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.Sh CONFIGURATION
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In all tunable descriptions below, X represents the adapter number.
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.Pp
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To disable MSI interrupts for all
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.Nm
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driver instances, set this 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 this 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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To disable MSI-X interrupts for all
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.Nm
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driver instances, set this 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 this 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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this tunable 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 this tunable 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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The default max_chains value is 2048.
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.Pp
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The current number of free chain frames is stored in 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 seen since boot is stored in 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 number of times that chain frame allocations have failed since boot is
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stored in the
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dev.mpr.X.chain_alloc_fail
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.Xr sysctl 8
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variable.
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This can be used to determine whether the max_chains tunable should be
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increased to help performance.
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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 current number of free PRP pages is stored in the
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dev.mpr.X.prp_pages_free
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.Xr sysctl 8
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variable.
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PRP pages are used by NVMe devices for I/O transfers, much like Scatter/Gather
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lists.
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.Pp
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The lowest number of free PRP pages seen since boot is stored in the
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dev.mpr.X.prp_pages_free_lowwater
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.Xr sysctl 8
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variable.
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.Pp
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The number of times that PRP page allocations have failed since boot is
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stored in the
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dev.mpr.X.prp_page_alloc_fail
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.Xr sysctl 8
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variable.
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.Pp
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To set the maximum number of pages that will be used per I/O for all adapters,
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set this tunable in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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hw.mpr.max_io_pages=NNNN
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.Ed
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.Pp
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To set the maximum number of pages that will be used per I/O for a specific
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adapter, set this tunable 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_io_pages=NNNN
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.Ed
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.Pp
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The default max_io_pages value is -1, meaning that the maximum I/O size that
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will be used per I/O will be calculated using the IOCFacts values stored in
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the controller.
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The lowest value that the driver will use for max_io_pages is 1, otherwise
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IOCFacts will be used to calculate the maximum I/O size.
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The smaller I/O size calculated from either max_io_pages or IOCFacts will be the
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maximum I/O size used by the driver.
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.Pp
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The highest number of active I/O commands seen since boot is stored 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 this tunable 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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Y represents the target ID of the device.
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If more than one device is to be excluded, target IDs 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 this tunable 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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Y represents the target ID of the device.
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If more than one device is to be excluded, target IDs are separated by commas.
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.Pp
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The adapter can issue the
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.Sy StartStopUnit
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SCSI command to SATA direct-access devices during shutdown.
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This allows the device to quiesce powering down.
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To control this feature for all adapters, set the
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.Bd -literal -offset indent
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hw.mpr.enable_ssu
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.Ed
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.Pp
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tunable in
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.Xr loader.conf 5
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to one of these values:
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.Bl -tag -width 6n -offset indent
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.It 0
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Do not send SSU to either HDDs or SSDs.
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.It 1
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Send SSU to SSDs, but not to HDDs.
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This is the default value.
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.It 2
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Send SSU to HDDs, but not to SSDs.
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.It 3
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Send SSU to both HDDs and SSDs.
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.El
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.Pp
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To control this feature for a specific adapter, set this 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.enable_ssu
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.Ed
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.Pp
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The same set of values are valid as when setting this tunable for all adapters.
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.Pp
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SATA disks that take several seconds to spin up and fail the SATA Identify
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command might not be discovered by the driver.
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This problem can sometimes be overcome by increasing the value of the spinup
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wait time in
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.Xr loader.conf 5
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with the
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.Bd -literal -offset indent
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hw.mpr.spinup_wait_time=NNNN
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.Ed
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.Pp
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tunable.
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NNNN represents the number of seconds to wait for SATA devices to spin up when
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the device fails the initial SATA Identify command.
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.Pp
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Spinup wait times can be set for specific adapters in
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.Xr loader.conf 5 :
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with the
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.Bd -literal -offset indent
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dev.mpr.X.spinup_wait_time=NNNN
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.Ed
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.Pp
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tunable.
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NNNN is the number of seconds to wait for SATA devices to spin up when they fail
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the initial SATA Identify command.
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.Pp
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The driver can map devices discovered by the adapter so that target IDs
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corresponding to a specific device persist across resets and reboots.
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In some cases it is possible for devices to lose their mapped IDs due to
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unexpected behavior from certain hardware, such as some types of enclosures.
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To overcome this problem, a tunable is provided that will force the driver to
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map devices using the Phy number associated with the device.
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This feature is not recommended if the topology includes multiple
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enclosures/expanders.
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If multiple enclosures/expanders are present in the topology, Phy numbers are
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repeated, causing all devices at these Phy numbers except the first device to
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fail enumeration.
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To control this feature for all adapters, set the
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.Bd -literal -offset indent
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hw.mpr.use_phy_num
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.Ed
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.Pp
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tunable in
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.Xr loader.conf 5
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to one of these values:
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.Bl -tag -width 6n -offset indent
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.It -1
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Only use Phy numbers to map devices and bypass the driver's mapping logic.
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.It 0
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Never use Phy numbers to map devices.
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.It 1
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Use Phy numbers to map devices, but only if the driver's mapping logic fails
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to map the device that is being enumerated.
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This is the default value.
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.El
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.Pp
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To control this feature for a specific adapter, set this 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.use_phy_num
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.Ed
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.Pp
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The same set of values are valid as when setting this tunable for all adapters.
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.Pp
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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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tunable, either in
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.Xr loader.conf 5
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or by using
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.Xr sysctl 8 .
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These bits have the described effects:
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.Bd -literal -offset indent
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0x0001 Enable informational prints (set by default).
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0x0002 Enable prints for driver faults (set by default).
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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 (IOCTL).
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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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Avago Technologies (formally LSI), and Broadcom Ltd. (formally Avago).
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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 slm@FreeBSD.org .
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