On Sun, Mar 16, 2025 at 10:42:46PM +0530, Anand Moon wrote: > The events_bitmap initialization in starfive_pcie_probe() previously > masked out the PLDA_AXI_DOORBELL and PLDA_PCIE_DOORBELL events. > > These masking has been removed, allowing these events to be included > in the bitmap. With this change ensures that all interrupt events are > properly accounted for and may be necessary for handling doorbell > events in certain use cases. > > PCIe Doorbell Events: These are typically used to notify a device about > an event or to trigger an action. For example, a host system can write > to a doorbell register on a PCIe device to signal that new data is > available or that an operation should start12. > > AXI-PCIe Bridge: This bridge acts as a protocol converter between AXI > (Advanced eXtensible Interface) and PCIe (Peripheral Component Interconnect > Express) domains. It allows transactions to be converted and communicated > between these two different protocols3. > Are these events used in the driver for any purpose? Others have mentioned a potential irq storm issue with these interrupts also. So unless you want to enable these events for a specific purpose/usecase, it is better to keep them masked out. - Mani -- மணிவண்ணன் சதாசிவம்
