On Thu, Dec 20, 2012 at 07:16:34PM +0100, Shahbaz khan wrote:

Hi Woody,

Check "do_IRQ()" in arch/x86/kernel/irq.c. It is responsible to handle
device specific interrupts, while ipi and timer interrupts are dealt
elsewhere.

Thanks. Maybe you also know what's the name of the same function for
ARM, which is actual arch I am working on.

Hope this helps.

BR,
Shahbaz Khan

On Thu, Dec 20, 2012 at 3:27 PM, Woody Wu [off-list ref] wrote:

quoted

Hi, List

Where is the Kernel code that handles external interrupts? I want to
have a look at it but haven't found out where it is.

Actually, I have some basic questions about interrupt handling in Linux.
1. After Kernel's ISR received an interrupt, I believe it will invoke a
   handler defined in a device driver if any. But it should be the
   device driver's responsibility or kernel ISR's responsibility to
   clear (or acknowledge) the interrupt?

2. My device, an AX88796B network controller, asserting the interrupt
   line in a level-triggered manner. Now I met problem with the device that
   might caused by the CPU interrupt mode is not set as level-triggered by
   edge trigger.  My CPU is Samsung S3C2410, an ARM920T powered one.  Does
   anyone know usually where and how should I do this kind of setting?


Thanks in advance.

--
woody
I can't go back to yesterday - because I was a different person then.

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-- 
Shahbaz Khan

-- 
woody
I can't go back to yesterday - because I was a different person then.