feat(ber): Add a raw BER run with p=p31 and sleep 40

blanton_ber_debug.sh runs the hand-pasted flow from tools/BER_Test.txt as one command: prbs set p=p31, prbs get twice, prbsstat STArt Interval=30, sleep 40, Ber, STOp, prbs clear. Every bcmcmd output is printed as is under a timestamped header; there is no parsing, no PASS/FAIL and no summary. -u 0 / -u 1 picks one switch unit, both by default. The port list is the 200G ports without 268, as in BER_Test.txt; BER_PORTS, BER_POLY, BER_INTERVAL and BER_WAIT can be overridden. blanton_ber.sh is left unchanged. BER_Test.txt: p=3 -> p=p31 (verified on the bench), plus a unit 1 block, a both-units block and port en=0/1 for every cabled port. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0131orciRKrejchsuDk6UpXk
2026-10-21 09:01:55 +08:00
parent 4db9b45ce7
commit b652ec8072
2 changed files with 144 additions and 1 deletions
@@ -0,0 +1,100 @@
+#!/usr/bin/env bash
+# =============================================================================
+# blanton_ber_debug.sh  --  SerDes BER, raw run of tools/BER_Test.txt
+# =============================================================================
+# Version History:
+#   V1.0.0  2026-10-07  First version. Runs the hand-pasted BER flow end to end
+#                       (prbs set p=p31 / prbs get x2 / STArt / sleep 40 / Ber /
+#                       STOp / clear) and prints every bcmcmd output as is --
+#                       no parsing, no PASS/FAIL, no summary. blanton_ber.sh is
+#                       the judged version; this one is for looking at the raw
+#                       output on the bench.
+#
+# Order of operations (per step, unit 0 first, then unit 1):
+#     phydiag <ports> prbs set p=p31
+#     phydiag <ports> prbs get            twice: the 1st clears the sticky
+#     phydiag <ports> prbs get            "unlocked since last call", the 2nd
+#                                         is the current lock state
+#     phydiag <ports> prbsstat STArt Interval=30
+#     sleep 40                            MUST be > Interval, or Ber is read
+#                                         before the first interval settles
+#     phydiag <ports> prbsstat Ber
+#     phydiag <ports> prbsstat STOp
+#     phydiag <ports> prbs clear          releases the lanes back to normal
+#
+# ⚠️ Links show DOWN while PRBS runs -- that is expected.
+# ⚠️ Do not run together with blanton_ber.sh / blanton_traffic_linespeed.sh /
+#    blanton_tr518.sh -- they all take over the same ports.
+#
+# Usage:
+#   ./blanton_ber_debug.sh            # unit 0 and 1
+#   ./blanton_ber_debug.sh -u 0       # unit 0 only
+#   ./blanton_ber_debug.sh -u 1       # unit 1 only
+#
+# Env overrides:
+#   BCMCMD_CMD=bcmcmd  BER_POLY=p=p31  BER_INTERVAL=30  BER_WAIT=40
+#   BER_PORTS="1-24,..."   (default: the 200G ports, no 268 -- same as
+#                           tools/BER_Test.txt; add ",268" for the 100G uplink)
+# =============================================================================
+
+BCMCMD_CMD="${BCMCMD_CMD:-bcmcmd}"
+BER_UNITS="0 1"
+BER_PORTS="${BER_PORTS:-1-24,40-96,112-168,184-240,256-259,270-308,310-327,342-380,382-399,414-452,454-471,486-524,526-543,558-565}"
+BER_POLY="${BER_POLY:-p=p31}"
+BER_INTERVAL="${BER_INTERVAL:-30}"
+BER_WAIT="${BER_WAIT:-40}"
+
+usage() {
+    sed -n '/^# Usage:/,/^# =====/p' "$0" | sed '$d; s/^# \{0,1\}//'
+}
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -u|--unit)
+            case "$2" in
+                0|1) BER_UNITS="$2" ;;
+                *)   echo "[ERR ] invalid unit '$2' (use 0 or 1)" >&2; exit 2 ;;
+            esac
+            shift 2 ;;
+        -h|--help) usage; exit 0 ;;
+        *) echo "[ERR ] unknown option '$1'" >&2; usage >&2; exit 2 ;;
+    esac
+done
+
+# bcmcmd reads stdin -- keep it on /dev/null (see blanton_traffic_linespeed.sh V0.3.1)
+_bcm() {
+    local unit="$1"; shift
+    local cmd="dsh -c 'phydiag ${BER_PORTS} $*'"
+    echo
+    echo "### [$(date '+%F %T')] unit $unit: phydiag <ports> $*"
+    "$BCMCMD_CMD" -n "$unit" -c " ${cmd} " </dev/null 2>&1
+}
+
+for u in $BER_UNITS; do
+    _bcm "$u" "prbs set ${BER_POLY}"
+    _bcm "$u" "prbs get"
+    _bcm "$u" "prbs get"
+done
+
+for u in $BER_UNITS; do
+    _bcm "$u" "prbsstat STArt Interval=${BER_INTERVAL}"
+done
+
+echo
+echo "### [$(date '+%F %T')] sleep ${BER_WAIT}"
+sleep "$BER_WAIT"
+
+for u in $BER_UNITS; do
+    _bcm "$u" "prbsstat Ber"
+done
+
+for u in $BER_UNITS; do
+    _bcm "$u" "prbsstat STOp"
+done
+
+for u in $BER_UNITS; do
+    _bcm "$u" "prbs clear"
+done
+
+echo
+echo "### [$(date '+%F %T')] BER_DEBUG_DONE units: $BER_UNITS"