Re: [Qemu-devel] Interrupt request info

["Alessandro Corradi" <ale.corradi@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1032 bytes --]

I tried with both pic_set_irq and pic_set_irq_new but nothing happen (the
irq number is 13 and I verified with info irq in qemu monitor).
I tried also to hack i8259.c and the function is not called (I think).
What the first parameter of pic_set_irq_new is referred to?

Another question: why a new virtual device works anyway without interrupt
mechanism? isn't it essential?

Thanks

Ale

2006/11/2, Paul Brook <paul@codesourcery.com>:
>
> On Wednesday 01 November 2006 23:25, Roger Lathrop wrote:
> > Alessandro,
> >
> > All you should need to do to raise an IRQ in your code is:
> > pic_set_irq(s->irq,1);
> >
> > When the irq is serviced (in one of your ioport traps, I would assume),
> > knock the irq down:
> > pic_set_irq(s->irq,0);
>
> No. You should use pic_set_irq_new. Otherwise your code will break on
> machines
> with multiple interrupt controllers.
>
> Paul
>
>
> _______________________________________________
> Qemu-devel mailing list
> Qemu-devel@nongnu.org
> http://lists.nongnu.org/mailman/listinfo/qemu-devel
>

[-- Attachment #2: Type: text/html, Size: 1470 bytes --]