Round-7 audit found stale entries for files deleted by c04da4f031 and ecf1f19d55, plus missing entries for files still present in the archive. Rewrote the inventory to match the filesystem and added the 2026-07-13 sync note.
v3 USB-IMPLEMENTATION-PLAN supersedes v2 (archived). Comprehensive
audit-driven roadmap with 9 phases (P1–P9) to make USB a first-class
citizen in Red Bear OS:
P1: Trait unification (all 4 controllers implement UsbHostController)
+ panic hardening (usbscsid 0 panics, xhcid <20 unwraps)
+ remove 3 empty stubs (usbaudiod, acmd, ecmd)
P2: xHCI core — 51-quirk table, HCCPARAMS2 parsing, 36-code error
recovery (babble, transaction error, stall, split)
P3: Hub driver — full enumeration (wHubDelay, power timing, USB 3 SS)
+ interrupt-driven change detection + port LED
P4: Storage — UAS protocol, multi-LUN, SYNCHRONIZE_CACHE, UNMAP, mass-storage
quirks applied at runtime
P5: HID — report descriptor parser, usage→evdev mapping, LED sync, quirks,
multi-touch
P6: Class driver completeness — CDC ACM, CDC NCM, USB Audio, USB-serial
(FTDI/CP210x/PL2303/CH341), compliance test driver
P7: Power management — USB 2.0 LPM, USB 3.0 U1/U2/U3, runtime PM autosuspend
P8: Validation — hardware matrix ≥10 rows + 6 new QEMU scripts
+ error-injection tests
P9: Modern USB scope ADR (host-only; already written in v2 §12)
Linux 7.1 is the implementation of excellence — every feature has a
concrete cross-reference (file:line) and a 'port line-by-line' strategy
when implementation detail is in doubt.
USB-VALIDATION-RUNBOOK v3 replaces v2 (archived): test matrix with
per-phase exit gates, operator runbook for failures.
Stale items cleared:
- v2 active plan archived as USB-IMPLEMENTATION-PLAN-v2-2026-07.md
- v2 active runbook archived as USB-VALIDATION-RUNBOOK-2026-07.md
- archived/README.md supersession table extended
Replace v1 (now archived/USB-IMPLEMENTATION-PLAN-v1-2026-04.md) with a
comprehensive v2 that re-audits every daemon against local/sources/base/
HEAD, aligns with Redox 0.x USB HEAD (Jan-Jul 2026), and reorganizes
phases around bare-metal correctness gaps.
Key v1→v2 corrections:
- xHCI interrupts are *not* restored in production (main.rs:141 hardcodes
Polling). This was the biggest v1 overstatement. P0-A1 now fixes it.
- uhcid/ohcid are 35-line stubs, not "ownership-grade". P0-B2 gives them
real enumeration over usb-core.
- ehcid does not auto-spawn class drivers. P0-B1 adds that.
- The base fork carries only one USB commit. The 88-fix claim lived in
patch carriers that path-sourced recipes don't apply. v2 records this
honestly and recommends per-feature commits on submodule/base.
Also:
- USB-VALIDATION-RUNBOOK.md restored from archived/ (operationally current).
- local/AGENTS.md: operator override allowing agents to create submodules
when really necessary (2026-07-07), with a 4-point necessity test.
- archived/README.md supersession table updated with v1 plan and XHCID plan.
vasilito