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Altera_Forum
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13 years ago

pcie interface

we need to generate MSI interrupt to the application driver from the PCIe.The signal which we observed for generating interrupt in PCIe is "app_msi_req". Kindly could someone help us,if we have to ge...
Altera_Forum's avatar
Altera_Forum
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13 years ago

This information is defined in the PCIe User Guide - see link below:

http://www.altera.com/literature/ug/ug_pci_express.pdf#page=124

The app_msi_num[4:0] vector is to identify which of the 32 possible MSI interrupts you are asserting. The app_msi_tc[2:0] is identify which traffic class to send the MSI interrupt.

I recommend getting a copy of the PCIe spec and digging in a bit on MSI, then come back to the PCIe User Guide. It will make more sense.