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

[Altera_Forum]

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   https://alteraforum.com/forum/attachment.php?attachmentid=15004&stc=1   https://alteraforum.com/forum/attachment.php?attachmentid=15005&stc=1

[Altera_Forum]

A quick follow up: Thanks to Jeff, the link below helps a lot with PCI-E MSI and MSI-X: 

 http://www.alterawiki.com/wiki/implementing_msi-x_for_pci_express_in_altera_fpga_devices