Porting SDI 3 drivers to SDI 4
This topic provides information about
porting drivers to SDI 4.
SDI 4 drivers can use either
DDI 8/8mp or DDI 7/7mp,
although DDI 8 drivers for mass storage devices
must use SDI 4.
Only DDI 8 drivers support
PCI hot plug functionality;
for more information.
The manual pages contain detailed information
about differences between versions.
The following steps summarize the porting procedure:
``Porting drivers to DDI 8''
for information about porting drivers to DDI 8.
DDI 8 includes significant changes
to the supported entry point routine set
and syntax changes to the entry points that are retained.
Note that HBA drivers use
the SDI form for the
entry point routines.
Target drivers use the DDI form of these entry points
and must use the DDI 8 syntax.
Use the extended SCSI addressing functions
that are supported by SDI 4.
Drivers for Fibre Channel devices
must use the extended addressing scheme.
For other types of devices,
the drivers must use the new forms of the functions,
but can set the first parameter to NULL
to use conventional addressing schemes.
``Extended SCSI addressing scheme''
for details about implementing this functionality.
© 2005 The SCO Group, Inc. All rights reserved.
OpenServer 6 and UnixWare (SVR5) HDK - June 2005