Re: 2.6.23-rc1 sky2 boot crash in sky2_mac_intr

On Tue, Jul 24, 2007 at 09:50:08AM +0100, Stephen Hemminger wrote:

The problem is related to power management. The PHY has a number of PCI configuration
registers for power control, and the function of these changes based on the version and
revision of the chip. The driver does work on older versions of the EC-U, in
Fujitsu laptop's, it is just the new rev that is broken.

The driver should probably fail smarter (by not loading) if the PHY isn't powered
up correctly, but that doesn't help your problem.

The vendor has provided me with documentation on many versions
of the chip, but I don't have doc's on the lastest revision differences of the EC Ultra, 
so a proper solution is not easily available.  The best method for resolving this would
be to first try the vendor driver version of sk98lin and see if that fixes it. If so,
then it is easy to change sky2, to match the phy setup in the vendor driver.
Another possibility is to look for places in sky2 driver where there are places
that compare version/revision.

The most likely bits that need to change are in PCI registers: 0x80, 0x84 and 0x88
You could also load the windows driver and dump PCI config space (with lspci from
cygwin), and see what the settings are there.

I am away from my office for a month, and therefore away from any sky2
hardware for testing. 

I'll try the above and keep you posted. The crash itself seems to be a
2.6.23-rc1 regression though. I never experienced this with 2.6.22-rc5
which i was running before.

Flo
-- 
Florian Lohoff                  flo@rfc822.org             +49-171-2280134
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