Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
MPS(4)                 FreeBSD Kernel Interfaces Manual                 MPS(4)

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):

           mps_load="YES"

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:

     +o   LSI Logic SAS2004 (4 Port SAS)
     +o   LSI Logic SAS2008 (8 Port SAS)
     +o   LSI Logic SAS2108 (8 Port SAS)
     +o   LSI Logic SAS2116 (16 Port SAS)
     +o   LSI Logic SAS2208 (8 Port SAS)
     +o   LSI Logic SAS2308 (8 Port SAS)
     +o   LSI Logic SSS6200 Solid State Storage
     +o   Intel Integrated RAID Module RMS25JB040
     +o   Intel Integrated RAID Module RMS25JB080
     +o   Intel Integrated RAID Module RMS25KB040
     +o   Intel Integrated RAID Module RMS25KB080

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 interrupts for a specific mps driver instance, set the
     following tunable value in loader.conf(5):

           dev.mps.X.disable_msi=1

     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):

           hw.mps.disable_msix=1

     To disable MSI-X interrupts for a specific mps driver instance, set the
     following tunable value in loader.conf(5):

           dev.mps.X.disable_msix=1

     To set the maximum number of DMA chains allocated for all adapters, set
     the following variable in loader.conf(5):

           hw.mps.max_chains=NNNN

     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

           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 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:
     +o   No userland utility available (e.g.  mptutil(8)).
     +o   The driver probes devices sequentially.  If your system has a large
         number of devices, the probe will take a while.

FreeBSD 11.0-PRERELEASE         January 3, 2013        FreeBSD 11.0-PRERELEASE

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | CONFIGURATION | DEBUGGING | SEE ALSO | HISTORY | AUTHORS | BUGS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=mps&sektion=4&manpath=FreeBSD+9.2-RELEASE>

home | help