440 PCI adapter card interupt handling question

[Khai Trinh]

But Matt,

request_irq() is used to register the ISR with an irq#
between 0-12 (for the 440). However, the inbound
message interrupt is hardwire as you stated. How can I
use request_irq() to register hardwire interrupt
signal to the UIC? Or is there another kernel call to
handle such services?

Regards,
--Khai
--- Matt Porter <porter at cox.net> wrote:
>
> On Thu, Jun 13, 2002 at 03:10:11PM -0700, Khai Trinh
> wrote:
> >
> > Our custom board is a IBM 440GP based pci slave
> > adapter card, we will configure it to use the
> Simple
> > Message Passing Unit to allow interrupt generation
> to
> > the 440 from the Host. My question are Where in
> the
> > Linux kernel code can I initialize the 440 onboard
> > interrupt controller to enable this interrupt to
> > happen? And how do I register my interrupt
> handling
> > routine to service inbound interrupt from the
> Host?
>
> You don't use the UICs to generate an outbound
> message
> interrupt so there is no "initialization".  There is
> a
> hardwired UIC interrupt generated by inbound message
> interrupts.
>
> Since you are talking about writing a basic Linux
> device driver, I suggest you see one of the many
> books on the topic to learn some of the basics.
> request_irq(), for example, is explained with many
> examples.
>
> Regards,
> --
> Matt Porter
> porter at cox.net
> This is Linux Country. On a quiet night, you can
> hear Windows reboot.
>
>


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