[Xenomai-help] IRQ issue :xnintr_irq_handler

[Xenomai-help] IRQ issue :xnintr_irq_handler

[Marcel Soulot]

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Hi,

I wrote a driver to manage GPIO on a PCI card. This PCI card offer UART and
GPIO.
So when I use my GPIO driver with the IRQ10 (automatic assignment), I get
this error message : Xenomai: xnintr_irq_handler: IRQ10 not handled.
Disabling IRQ line.
I program IOCTL command which wait an event. This event is released when a
interrupt is notified on a change state from the input.
I get my error message when I change the state of my input and want to
provocate a interrupt.

I've made a another test; still with the same PCI card (same IRQ 10) but
this time I load the 16550A driver and use the uart with www.captain.at test
on writing and reading on the same uart. Everything works fine.

Can someone can explain me why I get my error ?

Thanks for your help,
Marcel.

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Re: [Xenomai-help] IRQ issue :xnintr_irq_handler

[Gilles Chanteperdrix]

Marcel Soulot wrote:
> Hi,
> 
> I wrote a driver to manage GPIO on a PCI card. This PCI card offer UART and
> GPIO.
> So when I use my GPIO driver with the IRQ10 (automatic assignment), I get
> this error message : Xenomai: xnintr_irq_handler: IRQ10 not handled.
> Disabling IRQ line.
> I program IOCTL command which wait an event. This event is released when a
> interrupt is notified on a change state from the input.
> I get my error message when I change the state of my input and want to
> provocate a interrupt.
> 
> I've made a another test; still with the same PCI card (same IRQ 10) but
> this time I load the 16550A driver and use the uart with www.captain.at test
> on writing and reading on the same uart. Everything works fine.
> 
> Can someone can explain me why I get my error ?

You get this error because no registered real-time IRQ handler is able
to handle the IRQ, very likely because you try to share an IRQ between
real-time drivers and non real-time drivers without modifying the non
real-time drivers as explained in the FAQ.

-- 
                                                 Gilles.

Re: [Xenomai-help] IRQ issue :xnintr_irq_handler

[Marcel Soulot]

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But why does it work for my uart driver and not for my gpio driver ?
They works in the same way about irq management, spoke to the same chip?

Thanks,
Marcel .


2009/4/8 Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>

> Marcel Soulot wrote:
> > Hi,
> >
> > I wrote a driver to manage GPIO on a PCI card. This PCI card offer UART
> and
> > GPIO.
> > So when I use my GPIO driver with the IRQ10 (automatic assignment), I get
> > this error message : Xenomai: xnintr_irq_handler: IRQ10 not handled.
> > Disabling IRQ line.
> > I program IOCTL command which wait an event. This event is released when
> a
> > interrupt is notified on a change state from the input.
> > I get my error message when I change the state of my input and want to
> > provocate a interrupt.
> >
> > I've made a another test; still with the same PCI card (same IRQ 10) but
> > this time I load the 16550A driver and use the uart with www.captain.attest
> > on writing and reading on the same uart. Everything works fine.
> >
> > Can someone can explain me why I get my error ?
>
> You get this error because no registered real-time IRQ handler is able
> to handle the IRQ, very likely because you try to share an IRQ between
> real-time drivers and non real-time drivers without modifying the non
> real-time drivers as explained in the FAQ.
>
> --
>                                                  Gilles.
>

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Re: [Xenomai-help] IRQ issue :xnintr_irq_handler

[Gilles Chanteperdrix]

Marcel Soulot wrote:
> But why does it work for my uart driver and not for my gpio driver ?
> They works in the same way about irq management, spoke to the same chip?

I have to admit that I did not really understand what your problem is. I
only told you what "Xenomai: xnintr_irq_handler: IRQ10 not handled"
means. Without seeing the driver code, I can not tell you much more,
except that it all boils down to the driver returning XN_ISR_NONE. For
the system to work correctly, when one driver returns XN_ISR_NONE,
another driver has to handle (meaning really making the peripheral
deasssert the irq line) the interrupt and return XN_ISR_HANDLED.

-- 
                                                 Gilles.