Re: [PATCH 2/2 v5] irqchip/Layerscape: Add SCFG MSI controller support

From: Alexander Stein
Date: Wed Mar 23 2016 - 05:18:29 EST


On Monday 07 March 2016 11:36:22, Minghuan Lian wrote:
> Some kind of NXP Layerscape SoC provides a MSI
> implementation which uses two SCFG registers MSIIR and
> MSIR to support 32 MSI interrupts for each PCIe controller.
> The patch is to support it.
>
> Signed-off-by: Minghuan Lian <Minghuan.Lian@xxxxxxx>

Tested-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxxxxxxxx>

Using an intel e1000e card which uses 3 MSIs. But the IRQ numbers are a bit strange though:
> grep eth3 /proc/interrupts
>
> 63: 49 0 MSI 134742016 Edge eth3-rx-0
> 64: 3 0 MSI 134742017 Edge eth3-tx-0
> 65: 4 0 MSI 134742018 Edge eth3

Best regards,
Alexander