NAME¶
mps
—
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):
DESCRIPTION¶
The
mps
driver provides support for LSI Logic
Fusion-MPT 2 SAS controllers and WarpDrive solid state storage cards.
HARDWARE¶
The
mps
driver supports the following
hardware:
- 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)
- LSI Logic SAS2308 (8 Port SAS)
- LSI Logic SSS6200 Solid State Storage
- Intel Integrated RAID Module RMS25JB040
- Intel Integrated RAID Module RMS25JB080
- Intel Integrated RAID Module RMS25KB040
- Intel Integrated RAID Module RMS25KB080
CONFIGURATION¶
To disable MSI interrupts for all
mps
driver
instances, set the following tunable value in
loader.conf(5):
To disable MSI interrupts for a specific
mps
driver instance, set the following tunable value in
loader.conf(5):
where X is the adapter number.
To disable MSI-X interrupts for all
mps
driver instances, set the following tunable value in
loader.conf(5):
To disable MSI-X interrupts for a specific
mps
driver instance, set the following
tunable value in
loader.conf(5):
To set the maximum number of DMA chains allocated for all adapters, set the
following variable in
loader.conf(5):
To set the maximum number of DMA chains allocated for a specific adapter, set
the following variable in
loader.conf(5):
dev.mps.X.max_chains=NNNN
This variable may also be viewed via
sysctl(8) to
see the maximum set for a given adapter.
The current number of free chain frames may be seen via the dev.mps.X.chain_free
sysctl(8) variable.
The lowest number of free chain frames may be seen via the
dev.mps.X.chain_free_lowwater
sysctl(8) variable.
The current number of active I/O commands is shown in the
dev.mps.X.io_cmds_active
sysctl(8) variable.
The maximum number of active I/O command seen since boot is shown in the
dev.mps.X.io_cmds_highwater
sysctl(8) variable.
DEBUGGING¶
To enable debugging prints from the
mps
driver, set the
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 ALSO¶
cd(4),
ch(4),
da(4),
mpt(4),
pci(4),
sa(4),
scsi(4),
targ(4),
loader.conf(5),
sysctl(8)
HISTORY¶
The
mps
driver first appeared in
FreeBSD 9.0.
AUTHORS¶
The
mps
driver was originally written by
Scott Long
⟨scottl@FreeBSD.org⟩. It has been improved and tested by LSI
Logic Corporation. This man page was written by
Ken Merry ⟨ken@FreeBSD.org⟩.
BUGS¶
This driver has a couple of known shortcomings:
- No userland utility available (e.g.
mptutil(8)).
- The driver probes devices sequentially. If your system has a large number
of devices, the probe will take a while.