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NAME

     isp - Qlogic based SCSI and FibreChannel SCSI Host Adapters

SYNOPSIS

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

           device scbus
           device isp

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

           isp_load="YES"

DESCRIPTION

     This driver provides access to SCSI or FibreChannel devices.

     SCSI features include support for Ultra SCSI and wide mode transactions
     for SCSI, Ultra2 LVD (for the ISP1080 and ISP1280), and Ultra3 LVD (for
     the ISP12160).

     Fibre Channel support uses FCP SCSI profile for FibreChannel.  and
     utilizes Class 3 and Class 2 connections (Qlogic 2100 is Class 3 only,
     minor patches to the Qlogic 2200 to force Class 2 mode).  Support is
     available for Public and Private loops, and for point-to-point
     connections (Qlogic 2200 only).  The newer 2-Gigabit cards (2300, 2312,
     2322) and 4-Gigabit (2422, 2432) are also supported.  Command tagging is
     supported for all (in fact, FibreChannel requires tagging).  Fabric
     support is enabled by default for other than 2100 cards.  Fabric support
     for 2100 cards has been so problematic and these cards are so old now
     that it is just not worth your time to try it.

FIRMWARE

     Firmware is available if the ispfw(4) module is loaded during bootstrap
     (q.v.).

     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:

           ISP1000
                   SBus Fast Wide, Ultra Fast Wide cards, Single Ended or
                   Differential cards.

           ISP1020
                   Qlogic 1020 Fast Wide and Differential Fast Wide PCI cards.

           ISP1040
                   Qlogic 1040 Ultra Wide and Differential Ultra Wide PCI
                   cards.  Also known as the DEC KZPBA-CA (single ended) and
                   KZPBA-CB (HVD differential).

           Qlogic 1240
                   Qlogic 1240 Dual Bus Ultra Wide and Differential Ultra Wide
                   PCI cards.

           Qlogic 1020
                   Qlogic 1020 SCSI cards.

           Qlogic 1040
                   Qlogic 1040 Ultra SCSI cards.

           Qlogic 1080
                   Qlogic 1280 LVD Ultra2 Wide PCI cards.

           Qlogic 1280
                   Qlogic 1280 Dual Bus LVD Ultra2 Wide PCI cards.

           Qlogic 12160
                   Qlogic 12160 Dual Bus LVD Ultra3 Wide PCI cards.

           Qlogic 210X
                   Qlogic 2100 and 2100A Copper and Optical Fibre Channel
                   Arbitrated Loop (single, dual).

           Qlogic 220X
                   Qlogic 2200 Copper and Optical Fibre Channel Arbitrated
                   Loop PCI cards (single, dual, quad).

           Qlogic 2300
                   Qlogic 2300 Optical Fibre Channel PCI cards.

           Qlogic 2312
                   Qlogic 2312 Optical Fibre Channel PCI cards.

           Qlogic 234X
                   Qlogic 234X Optical Fibre Channel PCI cards (2312 chipset,
                   single and dual attach).

           Qlogic 2322
                   Qlogic 2322 Optical Fibre Channel PCIe cards.

           Qlogic 200
                   Dell Branded version of the QLogic 2312 Fibre Channel PCI
                   cards.

           Qlogic 2422
                   Qlogic 2422 Optical Fibre Channel PCI cards (4 Gigabit)

           Qlogic 2432
                   Qlogic 2432 Optical Fibre Channel PCIe cards (4 Gigabit)

CONFIGURATION OPTIONS

     Target mode support may be enabled with the

     options ISP_TARGET_MODE

     option.

BOOT OPTIONS

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

     They are:

     hint.isp.0.disable
             A hint value to disable driver in kernel.

     hint.isp.0.fwload_disable
             A hint value to disable loading of firmware ispfw(4).

     hint.isp.0.prefer_memmap
             A hint value to use PCI memory space instead of I/O space access
             for.

     hint.isp.0.prefer_iomap
             A hint value to use PCI I/O space instead of Memory space access
             for.

     hint.isp.0.ignore_nvram
             A hint value to ignore board NVRAM settings for.  Otherwise use
             NVRAM settings.

     hint.isp.0.fullduplex
             A hint value to set full duplex mode.

     hint.isp.0.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.0.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.0.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.0.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.0.role
             A hint to define default role for isp instance (target,
             initiator, both).

     hint.isp.0.debug
             A hint value for a driver debug level (see the file
             /usr/src/sys/dev/isp/ispvar.h for the values.

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 seperate
             (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.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)

AUTHORS

     The isp driver was written by Matthew Jacob originally for NetBSD at
     NASA/Ames Research Center.

BUGS

     The driver currently ignores some NVRAM settings.

     Target mode support is not completely reliable yet.  It works reasonably
     well for Fibre Channel, somewhat well for Qlogic 1040 cards, but does not
     yet work for the other cards (due to last minute unannounced changes in
     firmware interfaces).