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Add targets for writing GDS files #1031

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merged 2 commits into from
Dec 28, 2023
Merged

Add targets for writing GDS files #1031

merged 2 commits into from
Dec 28, 2023

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lpawelcz
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@lpawelcz lpawelcz commented Jun 16, 2023 •
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Closes #1024

This PR bumps bazel_rules_hdl in order to:

Additionally:

  • 65a89c3 adds target which builds GDS files for find_index example based on the results from previous place_and_route targets for ASAP7 and SKY130 technologies.
  • b67d8b0 adds targets for generating GDS files for recently added RLE encoder and decoder examples, also for ASAP7 and SKY130.

EDIT:
This PR depends on #1230

@mtdudek mtdudek force-pushed the gds-write branch 2 times, most recently from 936f202 to f4d64f0 Compare June 16, 2023 13:58
@lpawelcz lpawelcz force-pushed the gds-write branch 3 times, most recently from 9639d6b to 1222858 Compare July 17, 2023 06:35
@lpawelcz lpawelcz marked this pull request as ready for review July 17, 2023 06:36
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PR is ready for review, I've updated the description. @proppy please take a look.

proppy
proppy reviewed Jul 23, 2023
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xls/examples/klayout.lyt Outdated
@@ -0,0 +1,158 @@
<?xml version="1.0" encoding="utf-8"?>
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I think the actual upstream is https://github.com/efabless/sky130_klayout_pdk/blob/main/sky130_tech/tech/sky130/sky130.lyt

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This is not a part of this PR anymore. It was added here only for testing purpose on the early stage of development.
It could be removed because KLayout tech files can now be supplied in bazel_rules_hdl with hdl/bazel_rules_hdl@5e2ec27

proppy
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@lpawelcz lpawelcz marked this pull request as draft July 24, 2023 14:39
@lpawelcz lpawelcz mentioned this pull request Jul 27, 2023
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@lpawelcz lpawelcz marked this pull request as ready for review July 28, 2023 06:06
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hdl/bazel_rules_hdl#173 is merged. I bumped bazel_rules_hdl dependency, rebased the code and fixed the commit history. @proppy this PR is ready for review again, please take a look.

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Just nits, can you also mention in the description that this also add the rules for the rle example?

@lpawelcz lpawelcz force-pushed the gds-write branch 2 times, most recently from 744075c to 67183e5 Compare August 31, 2023 12:02
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@proppy Sorry for the delay, I addressed your comments: renamed the rules and updated PR description.

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just a nit.

proppy
proppy reviewed Sep 19, 2023
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xls/examples/BUILD Outdated
@@ -32,6 +32,7 @@ load(
load("@rules_hdl//verilog:providers.bzl", "verilog_library")
load("@rules_hdl//synthesis:build_defs.bzl", "synthesize_rtl")
load("@rules_hdl//place_and_route:build_defs.bzl", "place_and_route")
load("@rules_hdl//gds_write:build_defs.bzl", "gds_write")
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nit: Load statement is out of its lexicographical order.

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fixed

proppy
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xls/modules/rle/BUILD
load("@rules_hdl//verilog:providers.bzl", "verilog_library")
load("@rules_hdl//synthesis:build_defs.bzl", "synthesize_rtl")
load("@rules_hdl//place_and_route:build_defs.bzl", "place_and_route")
load("@rules_hdl//gds_write:build_defs.bzl", "gds_write")
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nit: Load statement is out of its lexicographical order.

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fixed

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Fixed the load statements order and rebased the code onto 4c05344

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proppy commented Sep 28, 2023

Note: the internal review is currently blocked by a bazel_rules_hdl import (#ref 566360201)

@rw1nkler rw1nkler mentioned this pull request Sep 29, 2023
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@proppy proppy mentioned this pull request Oct 18, 2023
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@lpawelcz lpawelcz force-pushed the gds-write branch 2 times, most recently from 511e9fc to 72958fa Compare October 18, 2023 08:07
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Builds fail on GDS generation with:

  File "/home/runner/.cache/bazel/_bazel_runner/5bd26e4beeff37176a5bf6fac1c974c7/sandbox/linux-sandbox/27899/execroot/com_google_xls/bazel-out/k8-opt-exec-2B5CBBC6/bin/external/rules_hdl/gds_write/def2stream.runfiles/rules_hdl_pip_deps_klayout/site-packages/klayout/tl/__init__.py", line 1, in <module>
    import klayout.tlcore
ModuleNotFoundError: No module named 'klayout.tlcore'

This is caused by eb2fb6d. I was able to fix the build locally by changing the python version from 3.9 to 3.8 but it's not a good solution. I believe this could be fixed by hdl/bazel_rules_hdl#209

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proppy commented Nov 24, 2023

eb2fb6d does pass the python interpreter target here: https://github.com/google/xls/blob/main/dependency_support/initialize_external.bzl#L37 but also set the version to 3.9 here: https://github.com/google/xls/blob/main/dependency_support/rules_hdl/workspace.bzl#L53

Do you have more logging from bazel when pip_parse get executed?
https://github.com/hdl/bazel_rules_hdl/blob/c7da44c0e96a2b76b95e9b5d58b0272b8aa14796/init.bzl#L60-L67

@lpawelcz lpawelcz force-pushed the gds-write branch 3 times, most recently from 52db084 to 4becdd3 Compare December 8, 2023 15:04
@lpawelcz lpawelcz mentioned this pull request Dec 8, 2023
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lpawelcz commented Dec 8, 2023

Hi @proppy, I was actually able to fix this issue by fixing hermetic python handling in bazel_rules_hdl. I've opened a PR there: hdl/bazel_rules_hdl#240. Please take a look at it.

In this PR for the sake of testing my changes I've added a temporary commit which changes the source of bazel_rules_hdl to branch from the linked PR. I will change it to bumping bazel_rules_hdl version once hdl/bazel_rules_hdl#240 is merged.

This was referenced Dec 12, 2023
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@proppy I've moved bumping bazel_rules_hdl to a separate PR: #1230
It should be merged first and only then we can merge this one.
I've also updated place_and_route rules for examples used for GDS write because some of them had timing violations.

@lpawelcz lpawelcz marked this pull request as draft December 19, 2023 09:01
@lpawelcz
xls: examples: find_index: Add GDS generation rule
bd6b2d8 
Generate GDS for process technologies:
* ASAP7
* SKY130

Signed-off-by: Pawel Czarnecki <pczarnecki@antmicro.com>
@lpawelcz
xls: modules: rle: Add GDS generation rules
010cb92 
Add GDS write examples for RLE encoder and decoder for process
technologies:
* ASAP7
* SKY130

Signed-off-by: Pawel Czarnecki <pczarnecki@antmicro.com>
@lpawelcz lpawelcz marked this pull request as ready for review December 21, 2023 14:11
@copybara-service copybara-service bot merged commit 978dd8b into google:main Dec 28, 2023
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@lpawelcz lpawelcz deleted the gds-write branch December 29, 2023 09:37
@lpawelcz lpawelcz mentioned this pull request Jan 2, 2024
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Add targets for writing GDS files
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