[RFC PATCHv1 0/5] Use the mvebu PCIe driver on Kirkwood

[Thomas Petazzoni]

Arnd,

On Wed, 27 Mar 2013 19:11:14 +0100, Thomas Petazzoni wrote:

> > I assume it works with PIO, but does the SATA card use the I/O
> > space registers, or just memory space?
> 
> Both cards only use memory space. I have a quick and dirty patch for
> the e1000e driver that makes it read/write one particular register from
> the I/O space to test that it works, but I haven't checked this yet on
> Kirkwood. I don't expect much troubles, but who knows.

Just to let you know, I've tested the e1000e with my small changes that
does one I/O access, and it seems to work properly. At least, I read
from the register the value I should be reading (and therefore writing
works, because the I/O space of the e1000e essentially has two
registers: one address register, and one data register, so you must
write one address in the address register before being able to read
something from the data register).

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com