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apple_bce: add Apple T2 Buffer Copy Engine driver
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Authored by seuros on May 19 2026, 10:29 AM.
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Details

Summary

DMA ring transport between the host and the T2 coprocessor.
Provides mailbox handshake, queue setup, and firmware keepalive
for higher-level T2 services (VHCI, audio, etc.).

Tested-on: MacBookPro16,2 (A2251), Mac mini 8,1 (A1993)

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Passed
Unit
No Test Coverage
Build Status
Buildable 73218
Build 70101: arc lint + arc unit

Event Timeline

this broadly looks fine to me!

This revision is now accepted and ready to land.May 30 2026, 1:30 AM
This revision was automatically updated to reflect the committed changes.