Messages in this thread | | | Date | Tue, 11 May 1999 21:18:03 +0200 | From | Martin Mares <> | Subject | Re: Weird PCI problem |
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Hello!
> Finally I'm able to come back to the discussion of this problem. Now it's > showing up on a Dell PowerEdge 1300 (a pretty new system, I must say ...), > and the information for the "failing" system comes from this PowerEdge. > > Just to refresh your minds, the problem is that a PLX9080-based PCI board > has an I/O address assigned to it when it actually requested a 32-bit > memory address (more specifically, the PCI Base Address 2).
I'm pretty sure it's a hardware problem -- the lowest bit of the base address register (which says whether it's a memory region or an I/O region) must be hard-wired and thus not changeable by the software. [PCI specs, section 6.2.5.1]
So it's either the card having the region type bit erroneously writeable or some hardware glitch causing the bit to be misread (highly improbable). You could try `setpci -H1 -s 02:09.0 18.l=f0000000 18.l' to test the first possibility.
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 "God doesn't play dice." -- Albert Einstein
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