[otbn,dv] Declare model DPI imports in otbn_core_model module

The IEEE 1800 spec says the following about svGetScope:

  ...this is the scope of the function's declaration site, not call
  site.

but it seems that VCS feels differently :-) With VCS, calling the
imported DPI function otbn_model_step() from otbn_core_model gave a
scope pointing at the model. I suspect that the rule is "a package
doesn't have any scope, so use the call site instead". Xcelium quite
reasonably gives a scope of "otbn_model_pkg::". Unfortunately, this
breaks the tests!

Include the declarations into otbn_core_model directly to get things
working properly with both simulators. Also, get rid of the
otbn_model_pkg package entirely and update how we call the DPI
functions from the model interface and UVM code.

Signed-off-by: Rupert Swarbrick <rswarbrick@lowrisc.org>
8 files changed
tree: ec14fdef6800cc6ef49751629a963f263a3e96ce
  1. .github/
  2. ci/
  3. doc/
  4. hw/
  5. rules/
  6. site/
  7. sw/
  8. test/
  9. third_party/
  10. util/
  11. .bazelignore
  12. .bazelrc
  13. .bazelversion
  14. .clang-format
  15. .dockerignore
  16. .flake8
  17. .gitignore
  18. .style.yapf
  19. .svlint.toml
  20. .svls.toml
  21. _index.md
  22. apt-requirements.txt
  23. azure-pipelines.yml
  24. BUILD.bazel
  25. check_tool_requirements.core
  26. CLA
  27. COMMITTERS
  28. CONTRIBUTING.md
  29. LICENSE
  30. meson-config.txt
  31. meson.build
  32. meson_init.sh
  33. meson_options.txt
  34. python-requirements.txt
  35. README.md
  36. tool_requirements.py
  37. toolchain.txt
  38. topgen-reg-only.core
  39. topgen.core
  40. WORKSPACE
  41. yum-requirements.txt
README.md

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