HP-UX 11i Release Notes (December 2000)

Workstation/Server Specific Information
N4000 Server Functionality
Chapter 3 55
• Context Dependent I/O module (CDIO)
Because of the hierarchal dependency requirements of some platform
modules, not all new platform code is handled by PSMs. The following
CDIOs are included in HP-UX:
— CB CDIO
— LBA CDIO
— PCI CDIO
— PCItoPCI CDIO
Impact on Legacy Systems
Legacy system users will see minimal impact in their applications or
system administration tools due to the changes in the platform
infrastructure.
The configuration files on 64-bit systems (for example, /stand/system
and master.d/core-hpux) and SAM will refer to CB-CDIO, PSMs and
new CDIOs included in the system. These components may coexist in the
configuration files and be loaded into the kernel at the same time, even if
they are inactive on a particular platform. Run-time checks evaluate
which components are activated.
For legacy systems, end users might see new entries (sapic, lba, and
sba) in the /stand/system file. Some new lines have been added to
CDIO and DRIVER_DEPENDENCY tables of the
/usr/conf/master.d/core-hpux file to include the new central bus
(cb) and the various new PSMs (for example, pa_psm or
pa_generic_psm).
Configuration Changes
N4000 users must have these modules in the kernel (via the master file
entries) for the PAT, SBA, and Lower Bus Adapter (LBA) components to
be detected and properly configured and for the HP-UX kernel to boot.
Without these modules, the HP-UX kernel will be unable to detect the
hardware CEC components on a N4000 system and the kernel will not
boot.
The master file, /usr/conf/master.d/core-hpux, contains the
following entries for all systems.
$CDIO Table:
cb 1
lba 0