Date: Sun, 19 Nov 2000 20:08:12 -0700 (MST) From: Nate Williams <nate@yogotech.com> To: Mark Diekhans <markd@Kermodei.com> Cc: nate@yogotech.com (Nate Williams), freebsd-mobile@FreeBSD.ORG Subject: Re: PCMCIA modems locking up system under 4.1.1 Message-ID: <14872.38300.522850.106650@nomad.yogotech.com> In-Reply-To: <14872.37687.827909.398015@osprey.Kermodei.Com> References: <200011190851.AAA97559@kermodei.com> <14872.1741.13164.291719@nomad.yogotech.com> <200011200204.SAA99300@kermodei.com> <14872.35306.357071.444755@nomad.yogotech.com> <14872.37687.827909.398015@osprey.Kermodei.Com>
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> > > Hmm, spoke too soon. After the modem worked for hours, it lockup
> > > up the system twice in a few minutes (on IRQ 7, which I am 99% is
> > > not in use).
> >
> > Ejecting the card, or you had a lockup of the system? If the latter,
> > how do you know the modem caused it?
>
> No, not ejecting the card; but accessing the network over the modem.
> I don't know 100%; but I have never had a lockup when the modem was
> not in the machine and it generally seems to be associated with some kind
> of modem activity. Other that this, they system is rock solid.
IRQ 7 is a 'stray interrupt'. It may be related to the modem, or it may
not be.
> > The modem won't work at all reliably in PIO mode. The interrupt load is
> > difficult enough to keep up with in non-polled mode. If you polled the
> > modem, you'd have so many overflows as to be useless.
>
> Ok; thought it might be an interesting experiment.
Interesting is probably a good word for it. :)
> > Or, are you talking about the PCIC controller (which generates
> > insertion/removal event)?
>
> Hmm, might be a worth while experiment; at least would give me another IRQ to
> try. Is it enabled by setting the PCIC IRQ to 0?
Nope, the modem IRQ is decided by whatever line matches in
/etc/pccard.conf.
It may have a hard-coded IRQ
# 3Com Etherlink III 3C589D
card "3Com Corporation" "3C589D"
config 0x1 "ep0" 10
# The ethernet card is hard-coded to use IRQ 10
However, it could 'pick a free one',
# 3Com Etherlink III 3C589D
card "3Com Corporation" "3C589D"
config 0x1 "ep0" ?
# ? - Pick a free one based on the list of available interrupts from the
# top of the file. Those that haven't already been assigned can be
# assigned.
Nate
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