Date: Fri, 18 Sep 1998 18:17:31 -0700 From: Mike Smith <mike@smith.net.au> To: vanmaren@fast.cs.utah.edu (Kevin Van Maren) Cc: mike@smith.net.au, se@FreeBSD.ORG, smp@FreeBSD.ORG Subject: Re: Multiple PCI busses and the 450NX chipset Message-ID: <199809190117.SAA02441@dingo.cdrom.com> In-Reply-To: Your message of "Fri, 18 Sep 1998 18:49:34 MDT." <199809190049.SAA03431@fast.cs.utah.edu>
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> It is finding the 82454NX PCI Expander Bridges. Are there actually > any PCI cards in either of the other two busses (32-bit and 64-bit > PCI bus)? There wasn't when I booted it last, but I just bounced it again with a DC21041 on each of the other busses, and the result (we only probe one bus) is the same. There's an extra entry in the MP table though, showing a device on bus 1. Nothing on bus 2, perhaps that's because it's only a 32-bit card in a 64-bit slot? > I have seen this before, with the AMI BIOS, where the BIOS does not > configure PCI-PCI bridges if there is nothing on the other side > of the PCI bridge (or nothing but a PCI-PCI bridge, with nothing > on the other side of that). This (empty PCI busses) would also > make sense, given that there are no interrupt mappings in the MP > table for the other PCI busses. Good point. > Can you plug in a couple extra cards (at least one in each of the > other two busses) and try it again? If it still doesn't work, > I'll be glad to look at it, but my guess is that the multiple > host-PCI bridges are implemented similarly to the 450GX chipset, > and AGP in the 440BX, so it will "just work" once the BIOS > configures the bridges. Well, the cards are in there, and we're still not probing them. What next? 8) If you like, I can arrange login access to the system if that'd be handy, or come Monday I'd be more than happy to patch the system and generally be your fingers here. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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