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arm64: Add an initial GICv5 IWB driver
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Authored by andrew on Dec 16 2025, 12:09 PM.
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Details

Reviewers
manu
Group Reviewers
arm64
Summary

Add a driver to support the GICv5 interrupt wire bridge (IWB). The IWB
translates the change in state of an input wire and sends a MSI to
the interrupt translation service (ITS) to be translated to an LPI.

Unlike other MSI sources each wire has a fixed Event ID value it will
write in the MSI data.

Sponsored by: Arm Ltd

Diff Detail

Repository
rG FreeBSD src repository
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Unit
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Build Status
Buildable 69296
Build 66179: arc lint + arc unit