Hi ,
There are set of Interrupt lines available with the kernel . when ever you
want u'r CPU to be interrupted on the arrival of any packet , u have to
register an handler
for the interrupt .request_irq() method will register u'r handler for the
the interrupt line u
specify . so whenever a interrupt is generated on that line u'r handler
fuction will get called .
please refer page no 254 of LDD by Rubin .
Vinay
----- Original Message -----
From: "hzeng" <hzeng@hf.tvia.com>
To: <kernelnewbies@nl.linux.org>
Sent: Wednesday, March 20, 2002 5:56 PM
Subject: A stupid question about interrupt
> Hi,
>
> Maybe the question I ask is too stupid. But please excuse me to waste
your time.
> When I read the kernel , I wonder what is the way the interrupt passed
by. For example
> when a ethernet card emit a interrupt, the irq request is send from the
net card to the IPC,
> and then the IPC send the interrupt to the cpu, and then the cpu answer
the interrupt and send
> the ack message to IPC, and then ? What is the right way? If every
interrupt must be send to the
> IPC firstly?
> I am not very clearly about the process. Please cc to me, as I cannot
subscribe the mail successly.
>
> Thanks very much!
> Hzeng
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