MSI-X Interrupts - 1.0 English

Versal ACAP DMA and Bridge Subsystem for PCI Express Product Guide (PG344)

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1.0 English

The DMA supports up to 32 different interrupt source for MSI-X, which consists of a maximum of 16 usable DMA interrupt vectors and a maximum of 16 usable user interrupt vectors. The DMA has 32 MSI-X tables, one for each source. For MSI-X channel interrupt processing the driver should use the Engine’s Interrupt Enable Mask for H2C and C2H to disable and enable interrupts.