Re: [RFC PATCHv1 0/5] Use the mvebu PCIe driver on Kirkwood
From: Thomas Petazzoni <hidden>
Date: 2013-03-27 18:18:50
Also in:
linux-arm-kernel, linux-pci
Arnd, On Wed, 27 Mar 2013 19:11:14 +0100, Thomas Petazzoni wrote:
quoted
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