MPS(4) BSD Kernel Interfaces Manual MPS(4)NAMEmps — LSI Fusion-MPT 2 Serial Attached SCSI driver
SYNOPSIS
To compile this driver into your kernel, place the following lines in
your kernel configuration file:
device scbus
device mps
Or, to load the driver as a module at boot, place the following line in
loader.conf(5):
mps_load="YES"
DESCRIPTION
The mps driver provides support for LSI Logic Fusion-MPT 2 SAS con‐
trollers.
HARDWARE
The following controllers are supported by the mps driver
· LSI Logic SAS2004 (4 Port SAS)
· LSI Logic SAS2008 (8 Port SAS)
· LSI Logic SAS2108 (8 Port SAS)
· LSI Logic SAS2116 (16 Port SAS)
· LSI Logic SAS2208 (8 Port SAS)
CONFIGURATION
To disable MSI interrupts for all mps driver instances, set the following
tunable value in loader.conf(5):
hw.mps.disable_msi=1
To disable MSI-X interrupts for all mps driver instances, set the follow‐
ing tunable value in loader.conf(5):
hw.mps.disable_msix=1
To allow the driver to send multiple task management commands (like
abort, LUN reset, etc.), set the following variable:
hw.mps.X.allow_multiple_tm_cmds=1
via loader.conf(5) or sysctl(8), where X is the adapter number. By
default the driver only sends one task management command at a time, to
avoid causing a potential controller lock-up.
DEBUGGING
To enable debugging prints from the mps driver, set the
hw.mps.X.debug_level
variable, where X is the adapter number, either in loader.conf(5) or via
sysctl(8). The following bits have the described effects:
0x01 Enable informational prints.
0x02 Enable tracing prints.
0x04 Enable prints for driver faults.
0x08 Enable prints for controller events.
SEE ALSOcd(4), ch(4), da(4), mpt(4), pci(4), sa(4), scsi(4), targ(4)BUGS
This driver is still in development, it has only been tested on the amd64
architecture and has some known shortcomings:
· No IR (Integrated RAID) support.
· No userland utility support (e.g. mptutil(8)).
· Sometimes the driver gets into a state where devices arrive and
depart multiple times, without user intervention.
· The error recovery code isn't complete.
HISTORY
The mps driver first appeared in FreeBSD 9.0.
AUTHORS
The mps driver was originally written by Scott Long ⟨scottl@FreeBSD.org⟩.
This man page was written by Ken Merry ⟨ken@FreeBSD.org⟩.
BSD September 13, 2010 BSD
