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MPS(4)			 BSD 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 con-
     trollers.

HARDWARE
     The mps driver supports the following controllers:

     +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)

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 de-
     fault 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 ALSO
     cd(4), ch(4), da(4), mpt(4), pci(4), sa(4), scsi(4), targ(4)

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>.

BUGS
     This driver is still in development, it has only been tested on the amd64
     architecture and has some known shortcomings:
     +o	 No IR (Integrated RAID) support.
     +o	 No userland utility support (e.g.  mptutil(8).)
     +o	 Sometimes the driver gets into	a state	where devices arrive and de-
	 part multiple times, without user intervention.
     +o	 The error recovery code isn't complete.

BSD			      September	13, 2010			   BSD

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

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