Re: Question about the PCI bus.

Ben Woodard (bwoodard@cisco.com)
Fri, 06 Feb 1998 11:12:31 +0000


Thank you for the patch. I compiled it up and it seems to work. Is
this something that should be added to the mainline kernel? I noticed
that you didn't send it to linus?

-ben

> Hello,
>
> > A friend of mine got a Toshiba 520 CDT laptop and we loaded rh5.0
> > linux on it but the PCI chipset doesn't appear to be supported by
> > Linux 2.1.84 yet. I have no problems with the pci chipset in my
> > Toshiba 510 CDT. I was wondering where I could find some information
> > about PCI as a reference. I don't know what is supposed to happen when
> > the PCI bus driver probes the hardware. The error that is reported in
> > the startup messages is:
> >
> > PCI: 00:10 [1179/060a/060700] has unknown header type 82, ignoring.
> > PCI: 00:11 [1179/060a/060700] has unknown header type 82, ignoring.
> >
> > pci.c 92: pcibios_read_config_dwordbi(bus->number, devfn, PCI_VENDOR_ID, &l);
> >
> > is the line that seems to generate the error. I traced it into
> > arch/i386/kernel/bios32.c but I didn't know what access_pci is set to
> > in this system. So without having to buy and read all the pci manuals
> > can anyone give me some pointers on what I can do to troubleshoot this
> > problem.
>
> I haven't found this header type in the PCI specs, but there is a brief
> description of its structure in the Ralf Brown's Interrupt List. The following
> makes the kernel recognize it.
>
> Have a nice fortnight
> --
> Martin `MJ' Mares <mj@ucw.cz> http://atrey.karlin.mff.cuni.cz/~mj/
> Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth
> "System going down at 1:45 for disk crashing."

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