ISP(4)

NAME
isp - Qlogic FibreChannel SCSI Host Adapters driver

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

device scbus
device isp
device ispfw

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

    isp_load="YES"
    ispfw_load="YES"

DESCRIPTION
This driver provides access to FibreChannel SCSI devices.

It supports initiator and target modes of FCP SCSI profile, utilizing Class 3 and Class 2 connections. Support is available for Public and Private loops, Point-to-Point and Fabric connections.

Supported FC-Tape functionality is highly recommended for connections to tape drives that support it. It encompasses 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 it, 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 connecting controller that supports it to a target that supports it. It may be disabled using configuration and hint options described below.

HARDWARE
The isp driver supports the following optical Fibre Channel adapters:
Model: | Speed: | Bus:
Qlogic QLE2874 (2814) | 64Gb | PCIe
Qlogic QLE2870/QLE2872 (2812) | 64Gb | PCIe
Qlogic QLE2774 (2814) | 32Gb | PCIe
Qlogic QLE2770/QLE2772 (2812) | 32Gb | PCIe
Qlogic 2740/2742/2764 (2722/2714) | 32Gb | PCIe
Qlogic 2690/2692/2694 (2684/2692) | 16Gb | PCIe
Qlogic 267x/836x (2031/8031) FCoE | 16Gb | PCIe
Qlogic 256x (2532) | 8Gb | PCIe
Qlogic 246x (2432) | 4Gb | PCIe
Qlogic 2422 | 4Gb | PCI-X

FIRMWARE
Firmware loading is supported and handled by firmware(9). The correct firmware is either loaded automatically, if available for this type of adapter, or by manually loading the ispfw(4) module. It is strongly recommended that you use the firmware available from ispfw(4) as it is the one that most likely has been tested with this driver.

CONFIGURATION OPTIONS
Target mode support for Fibre Channel adapters may be enabled with the

options ISP_TARGET_MODE

option.

To disable FC-Tape, use the following configuration option:

options ISP_FCTAPE_OFF

Note that even if the ISP_FCTAPE_OFF option is used, it may be overridden by the fctape hint described below.

BOOT OPTIONS
The following options are switchable by setting values in /boot/device.hints.

They are:

hint.isp.N.msi
    Limit on number of Message Signaled Interrupts (MSI) to be used.

hint.isp.N.msix
    Limit on number of Extended Message Signaled Interrupts (MSI-X) to be used.

hint.isp.N.fwload_disable
    A hint value to disable loading of firmware provided by ispfw(4).

hint.isp.N.fwload_force
    A hint value to prefer firmware provided by ispfw(4), even if it is older than the firmware in flash on the board. If fwload_disable is also specified, fwload_force will be ignored.

    By default, with 27XX and newer controllers, the isp(4) driver will use the newer firmware. For older controllers, the isp(4) driver will use the firmware provided by ispfw(4) if it is available, and otherwise use the firmware in flash on the board.

hint.isp.N.ignore_nvram
    A hint value to ignore board NVRAM settings for. Otherwise use NVRAM settings.

hint.isp.N.fullduplex
    A hint value to set full duplex mode.

hint.isp.N.topology
    A hint value to select topology of connection. Supported values are:

    lport
        Prefer arbitrated loop and fallback to point to point.
    nport
        Prefer point to point and fallback to arbitrated loop.
    lport-only
        Arbitrated loop only.
    nport-only
        Point to point only.

hint.isp.N.portwwn
    This should be the full 64 bit World Wide Port Name you would like to use, overriding the value in NVRAM for the card.

hint.isp.N.nodewwn
    This should be the full 64 bit World Wide Node Name you would like to use, overriding the value in NVRAM for the card.

hint.isp.N.iid
    A hint to override or set the Initiator ID or Loop ID. For Fibre Channel cards in Local Loop topologies it is strongly recommended that you set this value to non-zero.

hint.isp.N.role
    A hint to define default role for isp instance (0 -- none, 1 -- target, 2 -- initiator, 3 -- both).

hint.isp.N.debug
    A hint value for a driver debug level (see the file /usr/src/sys/dev/isp/ispvar.h for the values.

hint.isp.N.vports
    A hint to create specified number of additional virtual ports.

hint.isp.N.nofctape
    Set this to 1 to disable FC-Tape operation on the given isp instance.

hint.isp.N.fctape
    Set this to 1 to enable FC-Tape operation on the given isp instance for targets that support it.

SYSCTL OPTIONS

dev.isp.N.loop_down_limit
    This value says how long to wait in seconds after loop has gone down before giving up and expiring all of the devices that were visible. The default is 300 seconds (5 minutes). A separate (nonadjustable) timeout is used when booting to not stop booting on lack of FC connectivity.

dev.isp.N.gone_device_time
    This value says how long to wait for devices to reappear if they (temporarily) disappear due to loop or fabric events. While this timeout is running, I/O to those devices will simply be held.

dev.isp.N.use_gff_id

dev.isp.N.use_gft_id
    Setting those options to 0 allows to disable use of GFF_ID and GFT_ID SNS requests during FC fabric scan. It may be useful if switch does not implement them correctly, preventing some devices from being found. Disabling them may cause unneeded logins to ports not supporting target role or even FCP at all. The default is 1 (enabled).

dev.isp.N.wwnn
    This is the readonly World Wide Node Name value for this port.

dev.isp.N.wwpn
    This is the readonly World Wide Port Name value for this port.

dev.isp.N.fw_version_flash
    The readonly flash firmware version value in the active region of the controller.

dev.isp.N.fw_version_ispfw
    The readonly firmware version value provided by ispfw(4).

dev.isp.N.fw_version_run
    The readonly firmware version value currently executed on the controller.

SEE ALSO
da(4), intro(4), ispfw(4), sa(4), scsi(4), gmultipath(8)

AUTHORS
The isp driver was written by Matthew Jacob originally for NetBSD at NASA/Ames Research Center. Later improvement was done by Alexander Motin <mav@FreeBSD.org>.

BUGS
The driver currently ignores some NVRAM settings.