Re: pci bus to pci bus xfers

[Greg KH <greg@xxxxxxxxx>]

On Wed, Nov 01, 2006 at 01:26:12PM -0500, Mark Hounschell wrote:
> 
> We have a method (application/drivers/hardware) where one pci card writes and
> reads directly into and out of the sram memory of another pci card on the same
> pci bus. This is accomplished by setting up page tables in the writer card with
> bus addresses etc. We cannot seem to get this to work when the cards are not
> physically on the same pci bus. First, is it physically possible on the x86
> platform and second, any hints as to what I need to do it.

You might try asking this on the linux-pci mailing list instead, but at
first glance, no, I do not think this is possible across different PCI
busses.

good luck,

greg k-h

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