From 0b267628a0153198038a10f54abd761af6fbf1a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=98yvind=20Harboe?= <oyvind.harboe@zylin.com>
Date: Thu, 17 Oct 2024 08:56:00 +0200
Subject: [PATCH] sweep: bazel build wns_report
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Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
---
 .github/workflows/ci.yml |  2 +-
 BUILD                    | 59 ++++++++++++++++++++++++++++++----------
 report-wns.tcl           | 10 +++++++
 wns-report.py            | 44 ++++++++++++++++++++++++++++++
 4 files changed, 100 insertions(+), 15 deletions(-)
 create mode 100644 report-wns.tcl
 create mode 100755 wns-report.py

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 000a329..c41d84e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -131,7 +131,7 @@ jobs:
         uses: actions/checkout@v4
       - name: Smoketests
         run: |
-          bazel build lb_32x128_shared_synth_floorplan
+          bazel build lb_32x128_shared_synth_floorplan wns_report
 
   test-target-local-clean-setup:
     name: Local flow - clean setup
diff --git a/BUILD b/BUILD
index 3110e0f..43ade57 100644
--- a/BUILD
+++ b/BUILD
@@ -145,30 +145,61 @@ orfs_flow(
     verilog_files = LB_VERILOG_FILES,
 )
 
-# Use-case:
-#
-# bazel build --keep_going $(bazel query //:* | grep lb_32x128_density.*place\$)
-DENSITY_SWEEP = [
-    0.70,
-    0.75,
-    0.80,
-]
+SWEEP = {
+    "1": {
+        "PLACE_DENSITY": "0.65",
+    },
+    "2": {
+        "PLACE_DENSITY": "0.70",
+    },
+    "3": {
+        "PLACE_DENSITY": "0.75",
+    },
+    "4": {
+        "PLACE_DENSITY": "0.80",
+    },
+}
 
 # buildifier: disable=duplicated-name
 [
     orfs_flow(
         name = "lb_32x128",
-        abstract_stage = "place",
-        arguments = LB_ARGS | {
-            "PLACE_DENSITY": str(density),
-        },
+        abstract_stage = "cts",
+        arguments = LB_ARGS | SWEEP[variant],
+        # Share synthesis across all variants, the sweep
+        # differs from floorplan and onwards
+        previous_stage = {"floorplan": "lb_32x128_synth"},
         stage_sources = LB_STAGE_SOURCES,
-        variant = "density_" + str(density),
+        variant = variant,
         verilog_files = LB_VERILOG_FILES,
     )
-    for density in DENSITY_SWEEP
+    for variant in SWEEP
 ]
 
+[orfs_run(
+    name = "lb_32x128_" + variant + "_report",
+    src = ":lb_32x128_" + ("" if variant == "base" else variant + "_cts"),
+    outs = [
+        "lb_32x128_" + variant + ".yaml",
+    ],
+    arguments = {
+        "OUTFILE": "$(location :lb_32x128_" + variant + ".yaml)",
+    },
+    script = ":report-wns.tcl",
+) for variant in SWEEP]
+
+genrule(
+    name = "wns_report",
+    srcs = ["wns-report.py"] +
+           [":lb_32x128_" + variant + ".yaml" for variant in SWEEP],
+    outs = ["lb_32x128_wns_report.md"],
+    cmd = (
+        "$(location :wns-report.py) > $@ " +
+        " ".join(["$(location :lb_32x128_" + variant + ".yaml)" for variant in SWEEP])
+    ),
+    visibility = ["//visibility:public"],
+)
+
 orfs_flow(
     name = "L1MetadataArray",
     abstract_stage = "cts",
diff --git a/report-wns.tcl b/report-wns.tcl
new file mode 100644
index 0000000..979613c
--- /dev/null
+++ b/report-wns.tcl
@@ -0,0 +1,10 @@
+source $::env(SCRIPTS_DIR)/load.tcl
+load_design 4_cts.odb 4_cts.sdc
+
+set paths [find_timing_paths -path_group reg2reg -sort_by_slack -group_count 1]
+set path [lindex $paths 0]
+set slack [get_property $path slack]
+
+set fp [open $::env(OUTFILE) w]
+puts $fp "slack: $slack"
+close $fp
diff --git a/wns-report.py b/wns-report.py
new file mode 100755
index 0000000..e3a81c0
--- /dev/null
+++ b/wns-report.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+import os
+import yaml
+import sys
+
+try:
+    from tabulate import tabulate
+except ImportError:
+
+    def tabulate(table_data, headers, tablefmt):
+        # Simple mock implementation of tabulate
+        output = []
+        output.append(" | ".join(headers))
+        output.append("-" * len(output[0]))
+        for row in table_data:
+            output.append(" | ".join(map(str, row)))
+        return "\n".join(output)
+
+
+def read_slack_from_yaml(file_path):
+    with open(file_path, "r") as file:
+        data = yaml.safe_load(file)
+        return data.get("slack", "N/A")
+
+
+def main():
+    if len(sys.argv) < 2:
+        print("Usage: python script.py <file1.yaml> <file2.yaml> ...")
+        sys.exit(1)
+
+    files = sys.argv[1:]
+    table_data = []
+
+    for file in files:
+        slack = read_slack_from_yaml(file)
+        table_data.append([os.path.splitext(os.path.basename(file))[0], slack])
+
+    headers = ["Filename", "Slack"]
+    table = tabulate(table_data, headers, tablefmt="github")
+    print(table)
+
+
+if __name__ == "__main__":
+    main()