MSI PCIE Interrupt : not receiving interrupt

Hi,

We are working on a custom board with X86 cpu board with Arria 10 FPGA as a peripheral device communicating over pcie.

We are trying to enable MSI interrupt to be received from FPGA Board. Attached are the FPGA board configuration, signal tap capture output , sample output driver which is used to verify MSI IRQ received in x86 custom board.

we have followed the procedure explained in the white paper to register and handle MSI interrupts.

https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/msg-signaled-interrupts-paper.pdf

We are working on centos-7.3, Linux kernel version - 3.10.0-514.el7.x86_64.

We have used the following apis from pci core.

pci_get_device,

pci_resource_start, pci_resoure_len

ioremap_noncache

pci_enable_msi_range

request_irq(, IRQF_SHARED,*);

We are not receiving the MSI interrupts on the X86 Host. We request help to debug this issue.

Regards,

Harish