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arm64: add support for FIQs
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Authored by kevans on Sep 12 2023, 3:29 PM.
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Details

Reviewers
andrew
manu
Group Reviewers
arm64
Summary

Chop off one bit of our MD space for FIQs and route those through INTRNG
to a compatible root controller. These will be used by the Apple
Silicon, which use FIQs for timer interrupts at a minimum. For all
in-tree platforms, this should effectively be a NOP.

Diff Detail

Repository
rG FreeBSD src repository
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Build Status
Buildable 53553
Build 50444: arc lint + arc unit

Event Timeline

This revision is now accepted and ready to land.Sep 12 2023, 5:28 PM
ehem_freebsd_m5p.com added inline comments.
sys/arm64/include/intr.h
51–61

Why expose these to assembly language? There is an instinct to expose everything, but I sincerely doubt these will ever be used in assembly language. I would prefer to have the #endif after line 61 to hint these are never used in assembly.