i.MX 6 and PCIe DMA issues

[Andrew Lunn]

On Tue, Jul 11, 2017 at 01:40:57PM +0000, Moese, Michael wrote:
> Hello ARM folks,
> I turn to you in hope you have any hints or directions on the problem I describe below.
> 
> I am currently investigating strange behavior of our i.MX 6 (Quad) board with an FPGA connected to to PCI Express. This FPGA contains, among others, an Ethernet (10/100 Mbps) IP core. 

FYI: I'm using am IMX6 quad with an intel i210 PCIe Ethernet
controller. It works fine. So you might want to look at how the igb
driver does its buffer handling.

       Andrew