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.