ocs_fc4

Usage

Overview

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 the following PCIe Fibre Channel adapters:

• LPe3500X FC Host Bus Adapter (Emulex 64/32G FC Gen 7 HBA)

• LPe3200X FC Host Bus Adapter (Emulex 32/16G FC Gen 6 HBA)

• LPe3100X FC Host Bus Adapter (Emulex 32/16G FC Gen 6 HBA)

• LPe160XX FC Host Bus Adapter (Emulex 16/8G FC Gen 5 HBA)

• LPe15004 FC Host Bus Adapter (Emulex 16/8G FC Gen 5 HBA)

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

Options

The following boot options are controlled by setting values in /boot/device.hints:

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).

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].