Interrupt controller

The interrupt controller interface includes kernel callouts and stubs.

Note: For information about interrupt sensitivity (level- and edge-), see Hardware initialization in the Startup Programs chapter.

Kernel callouts

mask()
Mask a specific interrupt vector.
unmask()
Unmask a specific interrupt vector.
config()
Discover the configuration of a specified interrupt level.

For more details about these kernel callouts, refer to the intrinfo structure in the System Page chapter.

CAUTION:
Your interrupt controller initialization code should set the interrupt triggering. QNX Neutrino uses only level-sensitivity for interrupts (see Hardware initialization in the Startup Programs chapter).

Stubs

Two “code stubs” are provided: id and eoi. For more information about these stubs, see interrupt_id_*() and interrupt_eoi_*() in this chapter.

For more information about interrupts, see the Interrupts chapter in Getting Started with QNX Neutrino, and the Writing an Interrupt Handler chapter in the Programmer's Guide.