Technical data

SunOS 5.5 Devices isp(7D)
NAME isp − ISP SCSI Host Bus Adapter Driver
SYNOPSIS isp@sbus-slot,0x10000
DESCRIPTION The isp Host Bus Adapter is a SCSA compliant nexus driver that supports the Qlogic
ISP1000 SCSI chip. The ISP1000 SCSI is an intelligent SCSI Host Bus Adapter chip that
reduces the amount of CPU overhead used in a SCSI transfer.
The isp driver supports the standard functions provided by the SCSA interface. The
driver supports tagged and untagged queuing, fast and wide SCSI, auto request sense
but does not support linked commands.
CONFIGURATION The isp driver can be configured by definingproperties in isp.conf which override the
global SCSI settings. Supported properties are scsi-options, target<n>-scsi-options,
scsi-reset-delay, scsi-watchdog-tick, scsi-tag-age-limit, scsi-initiator-id.
target<n>-scsi-options overrides the scsi-options property value for target<n>.<n> can
vary from 0 to 15.
Refer to scsi_hba_attach(9F) for details.
EXAMPLES Create a file /kernel/drv/isp.conf and add this line:
scsi-options=0x78;
This will disable tagged queuing, fast SCSI, and Wide mode for all isp instances. To dis-
able an option for one specific isp (refer to driver.conf(4)):
name="isp" parent="/iommu@f,e0000000/sbus@f,e0001000"
reg=1,0x10000,450
target1-scsi-options=0x58
scsi-options = 0x178 scsi-initiator-id = 15;
Note that the default initiator ID in OBP is 7 and that the change to ID 15 will occur at
attach time. It may be preferable to change the initiator ID in OBP.
The above would set scsi-options for target 1 to 0x58 and for all other targets on this SCSI
bus to 0x178.
The physical pathnameof the parent can be determined usingthe /devices tree or follow-
ing the link of the logical device name:
example# ls -l /dev/rdsk/c2t0d0s0
lrwxrwxrwx 1 root root 76 Aug 22 13:29 /dev/rdsk/c2t0d0s0 ->
../../devices/iommu@f,e0000000/sbus@f,e0001000/QLGC,isp@1,10000/sd@0,0:a,raw
The register property values can be determined from prtconf(1M) output (−v option):
QLGC,isp, instance #0
...
Register Specifications:
Bus Type=0x1, Address=0x10000, Size=450
modified 30 Aug 1995 7D-165