[QUESTION] Enable coherency for all pages on 83xx to fix PCI data corruption

Liu Dave-r63238 DaveLiu at freescale.com
Tue Aug 29 12:04:14 EST 2006

> This was to address PCI5 if I remember correctly.
> - kumar
> On Aug 28, 2006, at 2:49 AM, Liu Dave-r63238 wrote:
> > All,
> >
> > I want to know which PCI errata is solved by this patch and if this 
> > patch did test on real hardware.
> >
> > I know this patch turn on the 'M' bit -memory coherency.
> > But I don't believe this can solved the "PCI read multi-line"
> > errata.
> >
> > -DAve

I also don't believe this patch can solve the PCI5 errata, The PCI5

When external PCI devices try to read from the memory which is defined
prefetchable and where the transaction is more than one cache line,
may be data corruption.


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