Date: Thu, 1 Jan 2004 16:51:01 +0100 From: Bernd Walter <ticso@cicely12.cicely.de> To: "M. Warner Losh" <imp@bsdimp.com> Cc: current@freebsd.org Subject: Re: Still IRQ routing problems with bridged devices. Message-ID: <20040101155100.GF11668@cicely12.cicely.de> In-Reply-To: <20031231.222230.01438468.imp@bsdimp.com> References: <20040101013224.GC11668@cicely12.cicely.de> <20031231.222230.01438468.imp@bsdimp.com>
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On Wed, Dec 31, 2003 at 10:22:30PM -0700, M. Warner Losh wrote: > In message: <20040101013224.GC11668@cicely12.cicely.de> > Bernd Walter <ticso@cicely12.cicely.de> writes: > : The board is an old Asus T2P4 with 3 bridged cards and $PIR table. > : All IRQs behind bridges get bogusly IRQ4 instead of the right ones. > : Is this only a problem on some boards or do we have a general irq > : routing problem with bridges? > > It is a problem with some bridges and PCI BIOS interrupt routing. The intline registers are correct - that's what used to run since years. What has the kind of bridge to do with it? > : At least I know that bridge irq routing works fine on alpha. > : $PIR table claims to only have 7 entries - does this make sense for > : a 4 slot board? > > Maybe you could post it. It makes sense if you have on-board PCI > devices. Is it shown with a boot -v or how can I get it? The board has 4 slots and the usual bunch of southbridge devices. > : If this is a board specific problem - can we at least add a loader > : variable to disable routing, so I don't have to patch the source on > : every update and can run a standart boot disk again? > > Did it used to work when we were re-routing all the time? It would be > easy to add this as an option, but maybe understanding your setup > might help a little to make our routing code a little smarter. It never worked if FreeBSD decides which int to use. I have to disable routing in pci.c to get back to intline entries. What do you mean with "when we were re-routing all the time"? If I don't get it wrong we are re-routing all the time and take the result if it's a valid int. -- B.Walter BWCT http://www.bwct.de ticso@bwct.de info@bwct.de
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