This section describes device identification, device addressing, and interrupts.
Device identification is the process of determining which devices are present in the
system. Some devices are self-identifying meaning that the device itself provides information to the
system so that the system can identify the device driver that needs to
be used. SBus and PCI local bus devices are examples of self-identifying devices.
On SBus, the information is usually derived from a small Forth program stored
in the FCode PROM on the device. Most PCI devices provide a
configuration space containing device configuration information. See the sbus(4) and pci(4) man
pages for more information.
All modern bus architectures require devices to be self-identifying.
Supported Interrupt Types
The Solaris platform supports both polling and vectored interrupts. The Solaris DDI/DKI interrupt
model is the same for both types of interrupts. See Chapter 8, Interrupt Handlers for more information
about interrupt handling.