V-Series Avalon-MM DMA Interface PCI-E MSI example

Dear All,

I need some example project for implementing MSI / MSI-X for "V-Series Avalon-MM DMA Interface" IP core.

My status is:

1. I was using Avalon-MM Cyclone V HIP for PCI-Express, and familiar with legacy interrupt a few years ago.

2. Now, There is a niche requirement asking me to use the DMA interface, but by the meanwhile open a low-speed channel to report certain events back to the host.

3. I am looking at implementing MSI (which is new to me).

The issue is I am missing the correct direction for the documents. The MSI knowledge on the IP core user guides and application notes are rarely mentioned.

So, can anyone point me a right direction for implementing MSI Interrupt for "V-Series Avalon-MM DMA Interface"

Plus, in the QSys, I saw the IP exported most MSI signals as conduits, except "MsiControl_o[15:0]" Can anyone tell me how to make it "show-up"?

Thanks and Regards,

Xu Li

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