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Updates to mpr driver man page.

Browse Source 
- Add 3216 and 3224 support.
- Add SSU, chain_alloc_fail, and spinup_wait_time information.
- Clear up some sentences.
- Correct some typos.

Reviewed by:    ken, scottl, ambrisko, asomers, wblock
Approved by:	ken, scottl, ambrisko
MFC after:      1 week
Differential Revision: https://reviews.freebsd.org/D6104
This commit is contained in:
slm 2016-05-09 16:42:46 +00:00
parent b58e11fc4e
commit 5205f258c4
1 changed files with 110 additions and 41 deletions
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151
share/man/man4/mpr.4
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@ -1,6 +1,8 @@
.\"
.\" Copyright (c) 2010 Spectra Logic Corporation
.\" Copyright (c) 2014 LSI Corp
.\" Copyright (c) 2016 Avago Technologies
.\" Copyright (c) 2016 Broadcom Ltd.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
@ -31,28 +33,27 @@
.\" mpr driver man page.
.\"
.\" Author: Ken Merry <ken@FreeBSD.org>
.\" Author: Stephen McConnell <stephen.mcconnell@lsi.com>
.\" Author: Stephen McConnell <slm@FreeBSD.org>
.\"
.\" $Id$
.\" $FreeBSD$
.\"
.Dd May 2, 2014
.Dd April 29, 2016
.Dt MPR 4
.Os
.Sh NAME
.Nm mpr
.Nd "LSI Fusion-MPT 3 IT/IR 12Gb/s Serial Attached SCSI/SATA driver"
.Sh SYNOPSIS
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
To compile this driver into the kernel, place these lines in the kernel
configuration file:
.Bd -ragged -offset indent
.Cd "device pci"
.Cd "device scbus"
.Cd "device mpr"
.Ed
.Pp
Alternatively, to load the driver as a
module at boot time, place the following line in
The driver can be loaded as a module at boot time by placing this line in
.Xr loader.conf 5 :
.Bd -literal -offset indent
mpr_load="YES"
@ -60,26 +61,34 @@ mpr_load="YES"
.Sh DESCRIPTION
The
.Nm
driver provides support for LSI Fusion-MPT 3 IT/IR
driver provides support for Broadcom Ltd./Avago Tech (LSI)
Fusion-MPT 3 IT/IR
.Tn SAS
controllers.
.Sh HARDWARE
The following controllers are supported by the
These controllers are supported by the
.Nm
driver:
.Pp
.Bl -bullet -compact
.It
LSI SAS 3004 (4 Port SAS)
Broadcom Ltd./Avago Tech (LSI) SAS 3004 (4 Port SAS)
.It
LSI SAS 3008 (8 Port SAS)
Broadcom Ltd./Avago Tech (LSI) SAS 3008 (8 Port SAS)
.It
LSI SAS 3108 (8 Port SAS)
Broadcom Ltd./Avago Tech (LSI) SAS 3108 (8 Port SAS)
.It
Broadcom Ltd./Avago Tech (LSI) SAS 3216 (16 Port SAS)
.It
Broadcom Ltd./Avago Tech (LSI) SAS 3224 (24 Port SAS)
.El
.Sh CONFIGURATION
.Pp
In all tunable descriptions below, X represents the adapter number.
.Pp
To disable MSI interrupts for all
.Nm
driver instances, set the following tunable value in
driver instances, set this tunable value in
.Xr loader.conf 5 :
.Bd -literal -offset indent
hw.mpr.disable_msi=1
@ -87,17 +96,15 @@ hw.mpr.disable_msi=1
.Pp
To disable MSI interrupts for a specific
.Nm
driver instance, set the following tunable value in
driver instance, set this tunable value in
.Xr loader.conf 5 :
.Bd -literal -offset indent
dev.mpr.X.disable_msi=1
.Ed
.Pp
where X is the adapter number.
.Pp
To disable MSI-X interrupts for all
.Nm
driver instances, set the following tunable value in
driver instances, set this tunable value in
.Xr loader.conf 5 :
.Bd -literal -offset indent
hw.mpr.disable_msix=1
@ -105,73 +112,134 @@ hw.mpr.disable_msix=1
.Pp
To disable MSI-X interrupts for a specific
.Nm
driver instance, set the following tunable value in
driver instance, set this tunable value in
.Xr loader.conf 5 :
.Bd -literal -offset indent
dev.mpr.X.disable_msix=1
.Ed
.Pp
To set the maximum number of DMA chains allocated for all adapters, set
the following variable in
this tunable in
.Xr loader.conf 5 :
.Bd -literal -offset indent
hw.mpr.max_chains=NNNN
.Ed
.Pp
To set the maximum number of DMA chains allocated for a specific adapter,
set the following variable in
set this tunable in
.Xr loader.conf 5 :
.Bd -literal -offset indent
dev.mpr.X.max_chains=NNNN
.Ed
.Pp
This variable may also be viewed via
.Xr sysctl 8
to see the maximum set for a given adapter.
The default max_chains value is 2048.
.Pp
The current number of free chain frames may be seen via the
The current number of free chain frames is stored in the
dev.mpr.X.chain_free
.Xr sysctl 8
variable.
.Pp
The lowest number of free chain frames may be seen via the
The lowest number of free chain frames seen since boot is stored in the
dev.mpr.X.chain_free_lowwater
.Xr sysctl 8
variable.
.Pp
The number of times that chain frame allocations have failed since boot is
stored in the
dev.mpr.X.chain_alloc_fail
.Xr sysctl 8
variable.
This can be used to determine whether the max_chains tunable should be
increased to help performance.
.Pp
The current number of active I/O commands is shown in the
dev.mpr.X.io_cmds_active
.Xr sysctl 8
variable.
.Pp
The maximum number of active I/O commands seen since boot is shown in the
The highest number of active I/O commands seen since boot is stored in the
dev.mpr.X.io_cmds_highwater
.Xr sysctl 8
variable.
.Pp
Devices can be excluded from
.Nm
control for all adapters by setting the following variable in
control for all adapters by setting this tunable in
.Xr loader.conf 5 :
.Bd -literal -offset indent
hw.mpr.exclude_ids=Y
.Ed
.Pp
where Y is the target ID of the device.
If more than one device is to be
excluded, target ID's are separated by commas.
Y represents the target ID of the device.
If more than one device is to be excluded, target IDs are separated by commas.
.Pp
Devices can be excluded from
.Nm
control for a specific adapter by setting the following variable in
control for a specific adapter by setting this tunable in
.Xr loader.conf 5 :
.Bd -literal -offset indent
dev.mpr.X.exclude_ids=Y
.Ed
.Pp
where X is the adapter number and Y is the target ID of the device.
If more
than one device is to be excluded, target ID's are separated by commas.
Y represents the target ID of the device.
If more than one device is to be excluded, target IDs are separated by commas.
.Pp
The adapter can issue the
.Sy StartStopUnit
SCSI command to SATA direct-access devices during shutdown.
This allows the device to quiesce powering down.
To control this feature for all adapters, set the
.Bd -literal -offset indent
hw.mpr.enable_ssu
.Ed
.Pp
tunable in
.Xr loader.conf 5
to one of these values:
.Bl -tag -width 6n -offset indent
.It 0
Do not send SSU to either HDDs or SSDs.
.It 1
Send SSU to SSDs, but not to HDDs.
This is the default value.
.It 2
Send SSU to HDDs, but not to SSDs.
.It 3
Send SSU to both HDDs and SSDs.
.El
.Pp
To control the feature for a specific adapter, set this tunable value in
.Xr loader.conf 5 :
.Bd -literal -offset indent
dev.mpr.X.enable_ssu
.Ed
.Pp
The same set of values are valid when setting this tunable for all adapters.
.Pp
SATA disks that take several seconds to spin up and fail the SATA Identify
command might not be discovered by the driver.
This problem can sometimes be overcome by increasing the value of the spinup
wait time in
.Xr loader.conf 5 :
with the
.Bd -literal -offset indent
hw.mpr.spinup_wait_time=NNNN
.Ed
.Pp
tunable.
NNNN represents the number of seconds to wait for SATA devices to spin up when
the device fails the initial SATA Identify command.
.Pp
Spinup wait times can be set for specific adapters in
.Xr loader.conf 5 :
with the
.Bd -literal -offset indent
dev.mpr.X.spinup_wait_time=NNNN
.Ed
.Pp
tunable.
NNNN is the number of seconds to wait for SATA devices to spin up when they fail
the initial SATA Identify command.
.Sh DEBUGGING
To enable debugging prints from the
.Nm
@ -180,21 +248,21 @@ driver, set the
hw.mpr.X.debug_level
.Ed
.Pp
variable, where X is the adapter number, either in
tunable, either in
.Xr loader.conf 5
or via
or by using
.Xr sysctl 8 .
The following bits have the described effects:
These bits have the described effects:
.Bd -literal -offset indent
0x0001 Enable informational prints.
0x0002 Enable prints for driver faults.
0x0001 Enable informational prints (set by default).
0x0002 Enable prints for driver faults (set by default).
0x0004 Enable prints for controller events.
0x0008 Enable prints for controller logging.
0x0010 Enable prints for tracing recovery operations.
0x0020 Enable prints for parameter errors and programming bugs.
0x0040 Enable prints for system initialization operations.
0x0080 Enable prints for more detailed information.
0x0100 Enable prints for user-generated commands.
0x0100 Enable prints for user-generated commands (IOCTL).
0x0200 Enable prints for device mapping.
0x0400 Enable prints for tracing through driver functions.
.Ed
@ -221,9 +289,10 @@ The
driver was originally written by
.An -nosplit
.An Scott Long Aq Mt scottl@FreeBSD.org .
It has been improved and tested by LSI Corporation.
It has been improved and tested by LSI Corporation,
Avago Technologies (formally LSI), and Broadcom Ltd. (formally Avago).
.Pp
This man page was written by
.An Ken Merry Aq Mt ken@FreeBSD.org
with additional input from
.An Stephen McConnell Aq Mt stephen.mcconnell@lsi.com .
.An Stephen McConnell Aq Mt slm@FreeBSD.org .