Re: [Regression] r8169: enable 64-bit DMA by default for PCIExpress devices (v2)

[Jörn Engel]

On Fri, 26 March 2010 19:55:44 -0600, Robert Hancock wrote:
>
> Well, that one's 36 bits, but it's unclear whether that driver would  
> actually be likely to access anything over 4GB. It's possible that  
> there's just some general problem with 64-bit DMA on that machine.

That may very well be.  I've had trouble using a PCIe card in that
machine as well.  "Solution" was to buy a different computer.  Sad, I
know, but not my money.

> The fact that even stuff like lspci and MII is breaking seems odd,  
> though. It could be that model of card doesn't like the PCIDAC register  
> bit being set (maybe it means something different on that model, or  
> something).
>
> I suppose a publicly accessible datasheet for these chips is too much to  
> hope for?

Which chips?

Jïrn
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/