ocs_fc

NAME

ocs_fc — Device driver for Emulex Fibre Channel Host Adapters

SYNOPSIS

To compile this driver into the kernel, add this line to the kernel configuration file:

device ocs_fc

To load the driver as a module at boot, add this line to loader.conf(5):

ocs_fc_load="YES"

DESCRIPTION

The ocs_fc driver provides access to Fibre Channel SCSI devices.

The ocs_fc driver supports initiator and target modes. Support is available for Arbitrated loops, Point-to-Point, and Fabric connections. FC-Tape is highly recommended for connections to tape drives that support it. FC-Tape includes four elements from the T-10 FCP-4 specification:

Precise Delivery of Commands
Confirmed Completion of FCP I/O Operations
Retransmission of Unsuccessfully Transmitted IUs
Task Retry Identification

Together these features allow for link level error recovery with tape devices. Without link level error recovery, an initiator cannot, for instance, tell whether a tape write command that has timed out resulted in all, part, or none of the data going to the tape drive. FC-Tape is automatically enabled when both the controller and target support it.

HARDWARE

The ocs_fc driver supports these Fibre Channel adapters:

Emulex 16/8G FC GEN 5 HBAS
Emulex 32/16G FC GEN 6 HBAS

UPDATING FIRMWARE

Adapter firmware updates are persistent.

Firmware can be updated by following these steps:

Copy this code to a Makefile:

KMOD=ocsflash 
FIRMWS=imagename.grp:ocsflash 
.include <bsd.kmod.mk>

Replace imagename with the name of the GRP file.
Copy the Makefile and GRP file to a local directory
Execute make and copy the generated ocsflash.ko file to /lib/modules
sysctl dev.ocs_fc.<N>.fw_upgrade=ocsflash
Check kernel messages regarding status of the operation
Reboot the machine

BOOT OPTIONS

Options are controlled by setting values in /boot/device.hints.

They are:

hint.ocs_fc.N.initiator: Enable initiator functionality. Default 1 (enabled), 0 to disable.
hint.ocs_fc.N.target: Enable target functionality. Default 1 (enabled), 0 to disable.
hint.ocs_fc.N.topology: Topology: 0 for Auto, 1 for NPort only, 2 for Loop only.
hint.ocs_fc.N.speed: Link speed in megabits per second. Possible values include: 0 Auto-speed negotiation (default), 4000 (4GFC), 8000 (8GFC), 16000 (16GFC).

SYSCTL OPTIONS

dev.ocs_fc.N.port_state: Port state (read/write). Valid values are online and offline.
dev.ocs_fc.N.wwpn: World Wide Port Name (read/write).
dev.ocs_fc.N.wwnn: World Wide Node Name (read/write).
dev.ocs_fc.N.fwrev: Firmware revision (read-only).
dev.ocs_fc.N.sn: Adapter serial number (read-only).
dev.ocs_fc.N.configured_speed: Configured Port Speed (read/write). Valid values are: 0 Auto-speed negotiation (default), 4000 (4GFC), 8000 (8GFC), 16000 (16GFC).
dev.ocs_fc.N.configured_topology: Configured Port Topology (read/write). Valid values are: 0-Auto; 1-NPort; 2-Loop.
dev.ocs_fc.N.current_speed: Current Port Speed (read-only).
dev.ocs_fc.N.current_topology: Current Port Topology (read-only).

SUPPORT

For general information and support, go to the Broadcom website at: http://www.broadcom.com/ or E-Mail at [email protected].

AUTHORS

The ocs_fc driver was written by Broadcom.

March 30, 2018

Debian