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Altera_Forum's avatar
Altera_Forum
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10 years ago

How to configure MSI interrupt

Hi, For PCIe Hard IP, how to setup/configure MSI interrupts? For example, I have DMA read and DMA write transactions, setting up through descriptors. At the last PTR, it sends MSI interrupts....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Thank you for your reply.

There are up to 16 lines of interrupt signals OR-ed into a single MSI interrupt. How these IRQ lines are associated with particular PCIe link/function or operations? e.g. Is there a way to associated DMA read completion to line A, and DMA write completion to line B?

The message ID in the ISR routine represents something or it is just a dummy parameter?