Re: 440 PCI adapter card interupt handling question

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@cox.net
This is Linux Country. On a quiet night, you can hear Windows reboot.

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/