ISP(4) FreeBSD Kernel Interfaces Manual 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.
FIRMWARE
Firmware loading is supported if the ispfw(4) module is loaded. It is
strongly recommended that you use the firmware available from ispfw(4) as
it is the most likely to have been tested with this driver.
HARDWARE
Cards supported by the isp driver include:
Qlogic 2422
Optical 4Gb Fibre Channel PCI-X cards.
Qlogic 246x (aka 2432)
Optical 4Gb Fibre Channel PCIe cards.
Qlogic 256x (aka 2532)
Optical 8Gb Fibre Channel PCIe cards.
Qlogic 267x/836x (aka 2031/8031)
Optical 16Gb FC/FCoE PCIe cards.
Qlogic 2690/2692/2694 (aka 2684/2692)
Optical 16Gb Fibre Channel PCIe cards.
Qlogic 2740/2742/2764 (aka 2722/2714)
Optical 32Gb Fibre Channel PCIe cards.
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 ispfw(4).
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 loopback and fallback to point to point.
nport Prefer point to point and fallback to loopback.
lport-only Loopback 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.
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.
FreeBSD 13.1-RELEASE-p6 November 19, 2020 FreeBSD 13.1-RELEASE-p6
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