LSI Logic PCI to SCSI Host Bus Adapter
The LSI Logic (formerly Symbios)
PCI to SCSI-2 host adapter driver, c8xx,
provides a Storage Device Interface (SDI) compliant interface to
LSI Logic 53c8xx, 53c1010, and 53c1510
These chips may be contained either on a computer's
motherboard or on LSI Logic host adapter boards.
Both implementations are referred to as
``LSI Logic host adapters''.
Please see the
Compatible Hardware Web Pages
for the current certification status of specific device models
on UnixWare 7 releases.
This driver dynamically maps interrupts, supports Wide, Ultra,
Ultra-2, and Ultra-3 SCSI, scatter/gather, and multiple host adapters.
In addition, the c8xx driver fully supports
either single or multiple processor systems (multiple processor
systems must also have the SCO Symmetrical Multiprocessing Support
The c8xx host adapter driver enables SDI-compliant
target SCSI drivers
(such as sd01 and st01) to communicate on the
SCSI bus with target
controllers and logical units.
This allows normal access to mass-storage
devices using standard system interfaces and filesystems.
It is also possible for an application to access the SCSI bus
subsystem directly by using the pass-through interface.
During the Power On Self Test (POST), the LSI Logic
queries the system BIOS for all
LSI Logic host adapters.
The latest LSI Logic
version contains a Configuration Utility,
allowing the user to view what LSI Logic host
adapters are in the system.
The user can request a display showing what
devices are attached to each host adapter.
Device operational characteristics can be modified and will
be utilized by the c8xx driver during normal operation.
Extreme caution should be exercised when using the pass-through interface.
It is possible to interfere with normal system I/O and cause hangs
if pass-through is used to an active device.
Pass-through should only be used to a device that is otherwise quiescent.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004