[PATCH v2 08/27] pci: implement an emulated PCI-to-PCI bridge
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Mon Jan 28 14:39:47 EST 2013
Dear Jason Gunthorpe,
Thanks a lot for your quick feedback!
On Mon, 28 Jan 2013 12:35:16 -0700, Jason Gunthorpe wrote:
> It is not essential, but desirable, to report an Express Root Port
> capability for PCI-E bridges:
[...]
> In the Marvell case, this capability can be constructed by pulling
> data from the the Express End Point capability of the PCI-E port:
I am not sure what you mean by "pulling". Do you mean that I should get
informations from the real PCIe interface, from within the emulated
PCI-to-PCI bridge implementation? This would unfortunately not be
really nice, because until now, the PCI-to-PCI bridge emulation is
clearly separated from the Marvell PCIe driver itself. Of course, it
could register a hook or something like that, so that the emulated
PCI-to-PCI bridge could potentially call back into the Marvell PCIe
driver.
I'll have to dig a little bit more about this capability to see how it
works exactly.
Thanks again for the feedback,
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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