Hello,

> Oh and going back a couple more messages, the four slots behind the 
> PCI-PCI Bridge all share the interrupt which would normally go to slot 
> C1.    So the interrupts for D2, E2 and F2 are available (as they 
> would be on any three slot machine) and I suspect that it is one of 
> those that was used for the E100 card.
You were dead right - or at least set me on the right direction. 
Watching systat a little while I noticed IRQ 23 firing once a second 
while I tried to ping the 21140 from another box - the JackHammer uses 
23 but since the driver didn't attach there shouldn't be interrupts on 
this line so I hardwired the 21140 to use 23 too and now it works :D
So, both parts of it sharing an interrupt makes some sort of sense.

To finalize it a few more questions:
- how static is the IRQ assignment? Can I rely on the JackHammer always 
sitting on IRQ 23?
- or - should I add some quirks to the tlp driver to grab the IRQ 
setting from JackHammer's OF node or try to configure the ethernet part 
too if fixpci() encounters a JackHammer in the right slot? Probably 
configurable through an option in the kernel config?
- is someone else on this list with a S900 and an E100/Mercury board to 
test this? So far it's only proven to run on exactly one box...
or should I just clean it up a little and send-pr the whole thing, 
hoping that someone else will do the testing?

have fun
Michael