i.MX6/PCIe and MSI interrupts

Jürgen Beisert jbe at pengutronix.de
Fri Dec 6 09:15:50 EST 2013

Hi Harro,

On Friday 06 December 2013 13:39:09 Harro Haan wrote:
> [...]
> Attached are my patches of the first attempt to get MSI working for
> the i.MX6. It looks like MSI is working but MSIX is not in combination
> with e1000e and SabreSD. I did some successful iperf tests in MSI
> mode. I did the following hack in
> drivers/net/ethernet/intel/e1000e/param.c to disable MSIX:
> -		if (adapter->flags & FLAG_HAS_MSIX) {
> +		if (!(adapter->flags & FLAG_HAS_MSIX)/*TEMP*/) {

Arrrgh, after applying this change it starts to work immediately. So many 

> My MSI tests are not successful when testing it with a Xilinx PCIe
> development board, while this FPGA design works properly with FSL
> imx_3.0.35 (or on x86).

Same here. Network chip works with MSI, PCIe FPGA does not.

Regards and thanks for your help,

Pengutronix e.K.                              | Juergen Beisert             |
Linux Solutions for Science and Industry      | http://www.pengutronix.de/  |

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