> > > The /proc/pci entry for the IDE chipset is the following:
> > > Bus 0, device 18, function 1:
> > > IDE interface: UMC UM8886BF (rev 16).
> > > Fast devsel. Master Capable. No bursts.
> > > Non-prefetchable 32 bit memory at 0x1f0 [0x1f0].
> > > Non-prefetchable unknown memory at 0x3f0 [0x3f6].
> > > Non-prefetchable 32 bit memory at 0x170 [0x170].
> > > Non-prefetchable unknown memory at 0x370 [0x376].
> >
> > There is no address space for DMA-Busmaster.
>
> Therefore it is a problem in the Linux PCI support,
> since this case should never happen nowadays.
>
> I have copied Martin (PCI guy) on this, so he can have a look.
In this case, it's surely a hardware problem -- look at the /proc/pci
entry above to see that the device is claiming these are _memory_
regions, not I/O regions (!!), so I completely understand that the
kernel didn't assign any I/O addresses to it. :-|
Probably the only thing we can do is to add an exception to the
PCI probing code to circumvent this bug. I'll look at it tomorrow.
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 "Is there a life before death?"- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/