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MPR(4)		       FreeBSD Kernel Interfaces Manual			MPR(4)

NAME
     mpr -- LSI	Fusion-MPT 3 IT/IR 12Gb/s Serial Attached SCSI/SATA driver

SYNOPSIS
     To	compile	this driver into the kernel, place the following lines in your
     kernel configuration file:

	   device pci
	   device scbus
	   device mpr

     Alternatively, to load the	driver as a module at boot time, place the
     following line in loader.conf(5):

	   mpr_load="YES"

DESCRIPTION
     The mpr driver provides support for LSI Fusion-MPT	3 IT/IR	SAS con-
     trollers.

HARDWARE
     The following controllers are supported by	the mpr	driver:

     +o	 LSI SAS 3004 (4 Port SAS)
     +o	 LSI SAS 3008 (8 Port SAS)
     +o	 LSI SAS 3108 (8 Port SAS)

CONFIGURATION
     To	disable	MSI interrupts for all mpr driver instances, set the following
     tunable value in loader.conf(5):

	   hw.mpr.disable_msi=1

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

	   dev.mpr.X.disable_msi=1

     where X is	the adapter number.

     To	disable	MSI-X interrupts for all mpr driver instances, set the follow-
     ing tunable value in loader.conf(5):

	   hw.mpr.disable_msix=1

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

	   dev.mpr.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.mpr.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.mpr.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.mpr.X.chain_free sysctl(8) variable.

     The lowest	number of free chain frames may	be seen	via the
     dev.mpr.X.chain_free_lowwater sysctl(8) variable.

     The current number	of active I/O commands is shown	in the
     dev.mpr.X.io_cmds_active sysctl(8)	variable.

     The maximum number	of active I/O commands seen since boot is shown	in the
     dev.mpr.X.io_cmds_highwater sysctl(8) variable.

     Devices can be excluded from mpr control for all adapters by setting the
     following variable	in loader.conf(5):

	   hw.mpr.exclude_ids=Y

     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.

     Devices can be excluded from mpr control for a specific adapter by	set-
     ting the following	variable in loader.conf(5):

	   dev.mpr.X.exclude_ids=Y

     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 com-
     mas.

DEBUGGING
     To	enable debugging prints	from the mpr driver, set the

	   hw.mpr.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:

	   0x0001 Enable informational prints.
	   0x0002 Enable prints	for driver faults.
	   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.
	   0x0200 Enable prints	for device mapping.
	   0x0400 Enable prints	for tracing through driver functions.

SEE ALSO
     cam(4), cd(4), ch(4), da(4), mps(4), mpt(4), pci(4), sa(4), scsi(4),
     targ(4), loader.conf(5), sysctl(8)

HISTORY
     The mpr driver first appeared in FreeBSD 9.3.

AUTHORS
     The mpr driver was	originally written by Scott Long <scottl@FreeBSD.org>.
     It	has been improved and tested by	LSI Corporation.

     This man page was written by Ken Merry <ken@FreeBSD.org> with additional
     input from	Stephen	McConnell <stephen.mcconnell@lsi.com>.

FreeBSD	9.3			  May 2, 2014			   FreeBSD 9.3

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

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=mpr&sektion=4&manpath=FreeBSD+9.3-RELEASE>

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