DMA/Bridge Subsystem for PCIe in Bridge Mode - 3.0 English

AXI Bridge for PCI Express Gen3 Subsystem Product Guide (PG194)

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3.0 English

The Interrupts modes in the following section applies to DMA/Bridge Subsystem for PCIe in Bridge Mode only. For AXI Bridge for PCIe Gen3, go to the previous section.

Multiple interrupt modes can be configured during IP configuration, however only one interrupt mode is used at runtime. If multiple interrupt modes are enabled by the host after PCI bus enumeration at runtime, MSI-X interrupt takes precedence over MSI interrupt, and MSI interrupt takes precedence over Legacy interrupt. All of these interrupt modes are sent using the same usr_irq_* interface and the core automatically picks the best available interrupt mode at runtime.