Failed to enable MSI-X interrupt in Linux System

Asked Sep 29 '15 at 13:33

Active Oct 06 '15 at 19:59

Viewed 2,204 times

I am working on PCIe based Cyclone V FPGA board in Linux Platform.

I have tried with legacy interrupt which works fine in my PCIe Driver. Now, I want to enable MSI-X interrupt in my PCIe driver.

MSI-X interrupt is implemented in FPGA system and I am getting total count 4 msix vectors in output of lspci command.

I have tried to call pci_enable_msix() routine to enable MSI-X interrupts which stuck my Linux System after loading driver with that routine.

I have also tried to call pci_enable_msi() routine which successfully enabled msi interrupt with free irq number allocated in pdev->irq.

Does anyone has idea or solution about this type of problem for MSI-X interrupt in Linux System?

edited Oct 06 '15 at 19:59

FabienM

asked Sep 29 '15 at 13:33

Ritesh Prajapati

Can you provide your probe code and the kernel dmesg error ? – FabienM Oct 07 '15 at 06:26
I have changed code and now I am able to enable MSI-X Interrupt with free IRQ number provided by system, After that, I have registered that IRQ with one handle and triggered IRQ but not able to get Interrupt Event for that. – Ritesh Prajapati Oct 10 '15 at 06:36
Please let me know if you have any idea for this as soon as possible. – Ritesh Prajapati Oct 10 '15 at 09:46
Finally, I am able to generate MSI-X Interrupt successfully in Linux Host System by changing FPGA System Design. – Ritesh Prajapati Nov 04 '15 at 06:42

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