Re: Developing Device Drivers for Character-Class MCA Adapters in AIX,
From
Louis Ohland@21:1/5 to
All on Wed Jan 4 06:30:30 2023
page 13. OCR is not 100%.
Configuration information is stored in the databases of the Object Data
Manager (ODM), an object-oriented database management system which is
part of the Device Configuration Subsystem. A general description of
every device which could possibly be in the system at any given time is
stored in the Predefined Devices (PdDv) database.
Devices are uniquely identified by a class, subclass, and a type
expressed in the form class/subclass/type, reflecting the device
hierarchy. An example is the ethernet interface card
-adapter/mca/ethernet. This information, along with names of the
appropriate device driver and configuration routines, is stored in the
PdDv database. Information specific to each individual device, such as
bus I/O address, is stored in the Predefined Attributes (PdAt) database.
The default value, the acceptable range of values, and type information
are included for each attribute.
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