On Wed, Oct 15, 2008 at 01:39:15PM +0200, Stefan Roese wrote:
> On Tuesday 14 October 2008, Ayman M. El-Khashab wrote:
> >
> > We are using the stock canyonlands (460EX) board with both original and
> > new kernels.  We have the 1L port as an end-point and the 4L as a RC.
> > We've purchased a PLX 8509 PCI-E Switch and PLX 8612 PCI-E Switch add-in
> > cards.  Each of them fits into the 4 lane port.
> 
> So you are using the PCIe slot 1? I'm asking since slot 0 is known to have 
> problems with some boards.

We are using slot 1.

> > sata to the 8509 and the 8509 to the canyonlands, u-boot will detect
> > the sata card, but for whatever reason, Linux does not see it
> > (via lspci or our own tool).
> 
> This is a Linux specific problem then. I suggest that you post this specific 
> problem to linuxppc-dev.
> 
> BTW: Do you happen to have another non-406EX AMCC eval board with PCIe? 
> Kilauea? Or Katmai? I know from another customer that using PCIe-switches on 
> 405EX works.

No, we don't have any other board that also has pci-e.  We have only a 
couple of canyonlands and a walnut.  The only other item we have is a regular
Linux PC with pci-e

> 
> Did you try to "tune" the "pciscandelay" environment variable? Setting 
> pciscandelay to "n" will delay the PCI device scan by "n" seconds. Some 
> endpoints seem to have problems with "too early" configuration, IIRC.

Per your suggestion, I gave that a try, but did not see any change (other than 
the expected delay at boot time).

Thank you for your help, it sounds like the best course is to try and find 
another system and see what happens there and to post to the linuxppc-dev
group about the devices not being detected in linux.

Thanks,
Ayman

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