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:

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:

UPDATING FIRMWARE

Adapter firmware updates are persistent.

Firmware can be updated by following these steps:

1. Copy this code to a Makefile:

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

2. Replace imagename with the name of the GRP file.
3. Copy the Makefile and GRP file to a local directory
4. Execute make and copy the generated ocsflash.ko file to /lib/modules
5. sysctl dev.ocs_fc.<N>.fw_upgrade=ocsflash
6. Check kernel messages regarding status of the operation
7. 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 ocs-driver-team.pdl@broadcom.com.

SEE ALSO

ifconfig(8)

AUTHORS

The ocs_fc driver was written by Broadcom.