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Volodymir's avatar
Volodymir
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3 years ago

Stratix 10 PCI Express Avalon®-MM DMA Reference Design. Interrupt generation.

Hello ! Working with a Stratix 10 board. Per AN 829: PCI Express* Avalon®-MM DMA Reference Design built the design and uploaded it to the board. I work with Windows. I successfully run DMA Read, DM...
Volodymir's avatar
Volodymir
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3 years ago

Hi ! Thanks for the answer.

You wrote:

……. if you are using rxm_irq_i signal, please noted that These signals are not available when the IP core is operating in DMA mode (i.e. when the Enable Avalon-MM DMA option in the Avalon-MM Settings tab of the GUI is set to On).

My question is in continuation of an open topic

How to generate a custom (MSI) interrupt with multiple sources? And when I need use Avalon-MM DMA?

In progect I will translate rxm_irq_i signals from altera_pcie_s10_hip_avmm_bridge.v module to top level ep_g3x8_avmmdma256_integrated.v.

When using .intx_req_i I only get the legacy interrupt, and DMA does not work because it will generate MSI interrupt.

I am currently using a design that I adapted for my board and that should be very familiar to your team:

Intel pcie example design.

https://community.intel.com/t5/FPGA-Wiki/Reference-Design-Gen3x8-AVMM-DMA-Stratix-10/ta-p/735907

Regards