On Sun, 2012-05-13 at 23:53 +0200, Adam Lackorzynski wrote:
Hi,
On Thu May 10, 2012 at 15:14:47 -0700, Shashi Sharma wrote:
I am pretty sure now that Fiasco's ISR is not getting invoked. I put a printf in the following interrupt handler in fiasco's src/kern/ia32/dirq-ia32-ux.cpp.
extern "C" FIASCO_FASTCALL void irq_interrupt(Mword _irqobj, Mword ip)
And it never gets invoked.
Ok.
You suggested in your last e-mail to "check whether the card is reporting a pending interrupt". But I dont really know how to do that. Is there some way in JDB to do that?
Usually a device has a device register that indicates whether an interrupt has been asserted. So in JDB you could look up the this register, or add some printf in the driver or so to see if its contents change after some packet transfer should have happened.
For IGB that register would be called ICR or EICR (interrupt cause register). Hope that helps finding it in the source.
Julian