Date: Sat, 28 Feb 1998 20:00:08 +0100 (CET) From: hm@kts.org (Hellmuth Michaelis) To: helbig@Informatik.BA-Stuttgart.DE (Wolfgang Helbig) Cc: freebsd-isdn@FreeBSD.ORG Subject: IRQ problems (Re: AVM A1 Setup bug on NetBSD?) Message-ID: <m0y8rUW-00024QC@bert.kts.org> In-Reply-To: <199802281511.QAA00257@rvc1.informatik.ba-stuttgart.de> from Wolfgang Helbig at "Feb 28, 98 04:11:25 pm"
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Wolfgang Helbig wrote:
> > > do you mean messages like that?
> > > I have an NetBSD 1.3 with an _CREATIX_ card.
> > >
> > > Feb 27 00:00:07 hal /netbsd: i4b-L2-i4b_tei_assign: tx TEI ID_Request
> > > Feb 27 00:00:08 hal /netbsd: i4b-L2-i4b_T202_timeout: unit 0, N202 = 3
> > > Feb 27 00:00:08 hal /netbsd: i4b-L2-i4b_tei_assign: tx TEI ID_Request
> > > Feb 27 00:00:09 hal /netbsd: i4b-L2-i4b_T202_timeout: unit 0, N202 = 3
> > > Feb 27 00:00:09 hal /netbsd: i4b-L2-i4b_tei_assign: tx TEI ID_Request
> > > Feb 27 00:00:10 hal /netbsd: i4b-L2-i4b_T202_timeout: unit 0, N202 = 3
> >
> > Yes - this is very much likeley due to the interrupt handler not
> > being called.
>
> The same happened on a FreeBSD SMP system. The workaround was
> to MASK/UNMASK the ISAC/HSCX interrupts every time an ISAC command
> is issued (see layer1/i4b_isac.c)
I get more and more reports like this.
Some people don't get IRQ's at all, some start getting them, and then
they suddenly stop being generated.
I think the problem is hardware dependent and not OS dependent and it
seems that isdn4bsd is using the HSCX and ISAC different than in bisdn
somehow somewhere.
This differences seem to really make a difference just on "special"
hardware - bisdn did run on that hardware.
But i doubt this will be cured by the SMP workaround, it just was not
necessary for bisdn to run.
It must be something more obvious and more general, the mistake must be
so obvious and so clear that at least i don't see it.
Even worse, i can't reproduce it, all my machines run properly with i4b.
hellmuth
--
Hellmuth Michaelis hm@kts.org Hamburg, Europe
"Those who can, do. Those who can't, talk.
And those who can't talk, talk about talking." (B. Shaw)
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