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Altera_Forum's avatar
Altera_Forum
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12 years ago

PCI interrupt problem

Hi I'm developing a project with altera FPGA cyclone IV Development Board connected to a PC via PCIe bus. I'm trying to generate a PC Interrupt when a push button of the dev board is pressed. ...
Altera_Forum's avatar
Altera_Forum
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11 years ago

You may needs configure the pcie core as Requester/Completer instead of Requester-only.ost

In Completer-only mode, the IP Compiler for PCI Express can receive requests, but cannot initiate upstream requests, this will cause the MSI interrupt not reach the host side.

For more info about MSI Interrupts Handling, refer to http://www.alterawiki.com/wiki/handling_pcie_interrupts