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feat(usb): every xHCI controller is driven, not only the first

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boards/BRINGUP.md A1, FABRIC-3 SXLII.  xhci.c keeps a table of controllers
(up to 8) and services each; kernel_main brings up index 0, 1, ... until
there is none.  repl.c's and blkio_usb.c's per-slot state is per
controller now (a slot ID is a controller's own), and each USB keyboard
keeps its own last report and lights; an unplugged keyboard releases what
it held.

Test first: keyboard and identity on a second controller behind a bridge,
Zuse on the first -- before, only Zuse; after, all three, on all three
ISAs.  Hot-plug and unplug on the second controller.  Acceptance unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
rajames
2026-10-14 14:27:38 -04:00
co-authored by Claude Opus 5.5
parent 739cb9c163
commit e729c64ba3
27 changed files with 81701 additions and 260 deletions
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