David S. Miller wrote:

> From: Christoph Hellwig <[EMAIL PROTECTED]>
> Date: Sat, 18 Mar 2006 06:16:31 +0000
> 
> > That workaround should be in the pci code as it affects any pci
> > device behind that bridge, not just tg3 ones.
> 
> We don't have any infrastructure to do that, even if it
> was practical.

Plus in practice, only tg3 devices will be affected. The 4-port NIC
designs all use 5704 behind the bridge and nothing else. Same for
the Niagara erie system, but sparc64 uses 32-bit DMA as David pointed
out to me, so it's not an issue at all. There are some x86 designs
where a PCIX bus is put behind the EPB, but x86 will never address
higher than 40-bit.

At this point, I am only aware of some IA64 systems such as those from
SGI that require the workaround when using the Silicom 4-port NIC.

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