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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.

In your last answer you wrote: You need to enable export MSI interface to implement custom MSI interrupt handle and send the MSI interrupt via TXS interface.....

I selected the option in platform designer – Export MSI/MSI-X conduit interface and after then, interface added to the top level of the project:

.intx_req_i (), // input, width = 1, intx_intfc.intx_req

.msi_intfc_o(), // output, width = 82, msi_intfc.msi_intfc

.msi_control_o(), // output, width = 16, msi_control.msi_control

.msix_intfc_o (), // output, width = 16, msix_intfc.msix_intfc

When trigger interrupt using input .intx_req_i (), OS (operating system) register legacy interrupt.

how this interface can help generate MSI interrupt ?

Can you give an example for your recommendations ? about which you wrote:

  • ……….you need to create a MSI (Memory Write) Transaction,
  • and transmit it through the TXS interface based on the information that you obtain from the MSI conduit interface,

Regards