In message: <[EMAIL PROTECTED]>
Duncan Barclay <[EMAIL PROTECTED]> writes:
:
: On 05-Jun-2003 M. Warner Losh wrote:
: > In message: <[EMAIL PROTECTED]>
: > Duncan Barclay <[EMAIL PROTECTED]> writes:
: >: This is more of a confirmation of my understanding than anything else.
: >: In -current, should an interrupt thread be created you set up an interrupt
: >: handler? If so, then I'd better check my code because I haven't got one!
: >
: > No. Just because we handle interrupts in a thread doesn't mean client
: > devices need to create a thread. The thread is creted automatically
: > and the routine passed to bus_setup_intr() is then called when an
: > interrupt happens.
:
: Rereading what I wrote, I might have mistyped and asked the wrong question.
:
: I think what you saying is that bus_setup_intr() doesn't create the thread,
: (in the sense of it appear in ps -ax?)
: but a thread is created automatically when the first interrupt occurs?
The thread is created right away. However, if this interrupt is
shared with another device, you'll see seomthing like:
root 23 0.0 0.0 0 12 ?? WL 11:35AM 0:04.24 (irq10: cbb0 cbb1++)
which says taht cbb0 and cbb1 (and others) share irq10.
: > So you are doing bus_setup_intr() and that routine is never called?
:
: Yup.
OK. Are you sharing interrupts? If so, can you see if the interrutp
is even happening? Can you force the card to interrupt right away?
Many cards have a force interrupt bit, so that one can detect if the
interrupts are wired right.
: If I load the kld for the driver and it attaches, nothing appears
: in vmstat -i, or ps -ax. Unfortunately, I've screwed up a lock in the ioctl
: hander and witness is panic'ing when I ifconfig the interface. As it
: is now bedtime I'll fix it tomorrow morning and report back.
OK. You may or may not see anything. I kldload if_an and get the
above ps line as the only evidence that happened.
: Anyway, I'm pleased with my progress as I can see arp requests hitting
: the wire before it panics.
Cool! Lemme know if there's anything else I can do help.
Warner
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