On Sun, Aug 28, 2005 at 04:09:12PM -0500, fdl(a)scottl.com wrote:
Thanks for that info. I had seen that function, but it appears that
the requested IRQ must be less than 16. I need to define multiple interrupt
handlers, and there aren't enough slots <= 16. Any other ideas? There must
be some way to write an interrupt that can be called by software that is
about the range imposed by NR_IRQS.
The number of physical interrupts on an x86 platform depends on the bus
and IRQ chip technology in use. It ranges from 8 (PC XT) to 16 (ISA PC, early
PCI) to 240 (APIC using systems).
The tasklet and related code then provide support for pure software event
handlers or events pushed off from the physical IRQ