 flamingcow
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9301348850
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Re-lock the mailbox window on lost phase instead of anchoring blind: one loop goroutine per module owns all transport, windows edge-locked from first touch, bringup verifies both modules before either AN restart; corrected charges and link-down reads print raw registers; harness -fuzz repeats lifecycles judging by exit status (30/30 module-clean)
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2026-08-13 16:32:14 -07:00 |
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flamingcow
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fef6b52b74
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Force master/slave roles at bringup (A master / B slave, IEEE 7.32): the AN role lottery plus per-training DSP convergence moves per-pair SNR up to ~3.6 dB, so sessions are pinned to identical conditions; launch power documented firmware-pinned (1.130), single-training SNR documented as a weak qualification number
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2026-08-13 14:23:57 -07:00 |
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flamingcow
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a9f10d3055
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Windowed module protocol: every op admitted inside a 3.4s window after the firmware's observed temp poll (cadence 3.5-4.2s measured, stuck-at-last-fetch stale mechanism proven and avoided), acquire/window with panic on dead heartbeat; noise column shows green on/off cycle phase, cable-missing state unchanged
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2026-08-13 14:04:16 -07:00 |
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flamingcow
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d81594ffbf
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Temp-warning disable proven not to silence the firmware's internal temp poll; corrected-error channel stays untrustworthy, register-docs ask is the remaining path (open-questions §5)
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2026-08-13 11:03:47 -07:00 |
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flamingcow
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a3de66f746
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Document the stale-read poisoning of the corrected-error channel: every burst decodes as a neighbor register, channel untrustworthy until stale reads are solved
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2026-08-13 10:57:54 -07:00 |
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flamingcow
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f9140ff8d9
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Bringup waits for nothing (no sleeps, no link waits, SETs fire cable-or-not with advert readback), errors held off the display while a measure is in flight, status poll is a deadline not a retry count, ghost signals (implausible SNR, undefined ECD verdict) panic outright; persistent stale-pipeline bridge fact documented
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2026-08-13 10:49:01 -07:00 |
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flamingcow
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f2891886f3
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Strip canaries, double-reads, retries and floors from the module protocol; every bcm method holds the per-module lock for its whole operation; facts stay in docs with internal-client contention marked unresolved
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2026-08-13 10:32:24 -07:00 |
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flamingcow
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9d1f15045f
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Shared-mailbox reality: module firmware is its own handler client (internal GET_CURRENT_TEMP ~3.5s, proven idle-watch), handler writes wedge the uC in busy windows; quiet-window writes, bare GETs double-read with CMD-readback tripwire, SNR floor, SETs verified externally; sentinel handshake and wire-probe jumbo check removed
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2026-08-13 10:19:32 -07:00 |
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flamingcow
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e99c7121e7
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Bridged MDIO reads verify freshness: a late async fetch serves the previous response as the wrong register (observed STATUS 0x0004 as 0.4dB SNR); unchanged-or-zero results re-read bare without re-arming until stable, first read always verified, identify retries against the constant PHY ID
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2026-08-13 08:26:22 -07:00 |
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flamingcow
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bba1fa5e02
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Jumbo in the size mix (MTU 9000 + module jumbo pinned), check-first module config trusting GET reads, cable diag async at startup through the reset path, MODULES table dissolved into SETTINGS/LINKS, per-driver NIC counter sets, comment cleanup
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2026-08-13 08:04:26 -07:00 |
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flamingcow
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979dc7a772
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BCM module diagnostics replace timestamp probes: bringup forces EEE off and runs ECD (re-run on every reset, re-baselining past its blip), 1 Hz SNR margin + corrected counters on panel and console; X520 bench divergences bypassed and tracked in open-questions
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2026-08-13 07:10:39 -07:00 |
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flamingcow
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a00f2216b7
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BCM bridge tolerates MCIA offset-write-then-read framing, proven on hardware via bcm_mcia_emu.py; MCIA question narrows to firmware acceptance of 0x56 and offset/framing details
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2026-08-12 21:39:46 -07:00 |
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flamingcow
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4e5ba0bccf
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Sharpen MCIA open question from mlx5_ifc.h register format; drop offline-rig and instrumentation-flow framing
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2026-08-12 21:37:02 -07:00 |
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flamingcow
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65b1e18004
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Dissolve resolved analyses into standalone device docs; open-questions.md keeps only the four live problems; discard NIC-timestamp length path (BCM ECD is proven) and Aquantia length trivia (30m part, oracle-only)
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2026-08-12 21:30:16 -07:00 |
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flamingcow
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8b021d186b
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Add full transcription of Marvell Alaska 88E151x public datasheet (168pp, 89 register tables) as CUX3610 family reference
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2026-08-12 21:15:05 -07:00 |
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flamingcow
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1afe36a3c8
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Remove WX1820: never had the hardware, evaluation was paper-only
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2026-08-12 21:10:38 -07:00 |
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flamingcow
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b6e0fe8978
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Add NIC datasheets: 82599 rev3.5, 710-series v4.1, E810 full datasheet, ConnectX-5 user manual + mlx5 PRM
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2026-08-12 21:09:08 -07:00 |
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flamingcow
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9cb82ca3fa
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Re-transcribe BCM84891L MDIO command and SFP register excerpts in full (all 45 commands, complete serial-ID table); scrub doc-provenance attribution and label all our interjections as field notes
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2026-08-12 21:02:30 -07:00 |
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flamingcow
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5588ebec6f
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Resolve X520 open questions on hardware: ETQF raw-L2 steering and single-hold compound I2C proven; 82599 has no all-packet exact-timestamp path so it is disqualified as product NIC (diagnostics-only), counter route rejected for a cable tester
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2026-08-12 20:36:31 -07:00 |
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flamingcow
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910379e614
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Correct Wiitek danger analysis: whole 3.0x8000+/31.0xF000+ window is lethal, not just *.??64 -- 88Q2220 recipe is IN the danger zone; record live baseline and no-safe-VCT-path finding
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2026-08-12 19:50:15 -07:00 |
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flamingcow
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ad9bc9fae4
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BCM ECD recovered from OpenBCM SDK and proven: 1E.4006 start, 1.A896 verdicts, 1.A897-9A per-pair meters -- meter-accurate on a 45m cable, healthy pairs report length
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2026-08-12 19:37:54 -07:00 |
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flamingcow
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c57816345f
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Restructure docs: per-device directories under modules/ and nics/ with co-located datasheets, state centralized in state.md, prose tightened into lists and tables
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2026-08-12 19:23:02 -07:00 |
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flamingcow
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dc1fa6538d
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Record FS probe sweep: AutogrEEEn found and forced off (defensive at bringup), identity pair map, FR count as metric, firmware DATA1 reliability caveat
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2026-08-12 18:41:32 -07:00 |
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flamingcow
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ff64b59fe0
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Transcribe BCM PDFs to markdown visually (tables intact); catalog probe candidates: EEE advertised in reference bringup, EMI cmds are fast-retrain enables, 1588/loopback/ECD chapters missing
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2026-08-12 18:33:10 -07:00 |
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flamingcow
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4023d7ccf0
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Add FS/BCM capability inventory; drop SNR/power-backoff length proxies -- length is PHY features or NIC timestamps only
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2026-08-12 18:23:28 -07:00 |
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flamingcow
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01e00dfffe
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BCM path proven on X520: fix multi-byte i2c read (SDA release), GET_SNR is 0x8030 invoked bare, IEEE SNR regs dead on BCM, module pause forced off
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2026-08-12 17:50:14 -07:00 |
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flamingcow
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6f787c0873
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Record X520 install: FS+Wiitek seated and linked, FS's honest EEPROM is what trips ixgbe qualification, uplink moved to enp88s0
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2026-08-12 17:35:25 -07:00 |
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flamingcow
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5f4a8ceb57
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Vendor AQR datasheet, correct timestamp model (hw rx stamps are a hard requirement), order ConnectX-5, map 82599 bucket-timestamp routes
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2026-08-10 12:50:57 -07:00 |
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flamingcow
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73074040e0
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Answer open questions from desk analysis: ETQF steering, E820 is post-FEC, compound I2C op, forced co-location
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2026-08-10 11:51:39 -07:00 |
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flamingcow
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8c8e0c7d32
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Add open-questions doc for pre-hardware deep-dive
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2026-08-10 11:31:19 -07:00 |
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flamingcow
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44e010caa9
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Note Wiitek ixgbe RollBall client and flag ixgbe RX-steering as open investigation
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2026-08-10 11:29:05 -07:00 |
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flamingcow
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3f1bb03e52
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Record X520 ixgbe raw-i2c patch and BCM client prep in state doc
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2026-08-10 11:21:49 -07:00 |
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flamingcow
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6597a11c33
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Add in-repo project docs: goals, state, hardware, module-PHY transports, module diagnostics, and measurement lessons
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2026-08-10 10:34:26 -07:00 |
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