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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

For the Av-ST version at least, the message ID in the ISR routine (I'm assuming you are using KMDF/Windows) is directly related to which number the MSI is. When an MSI is send through the streaming core you also have to configure which number it is by a separate input.

As for the Av-MM DMA version, I am not sure how this is done (or if it is possible).