[otbn] Extend DV to cover `INSN_CNT` CSR
Open
Nobody has claimed this yet.
IP:otbn
- Dominant language
- SystemVerilog
- Stars
- 3.6k
- Forks
- 1.1k
- Avg merge
- 2d 22h
- Merged PRs (30d)
- 141
Description
### Description
https://github.com/lowRISC/opentitan/pull/30606/ exposed the `INSN_CNT` to OTBN SW. See also https://github.com/lowRISC/opentitan/issues/29139. There is a simple smoke test but DV does not cover this CSR yet.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the existing OTBN DV smoke test and the INSN_CNT CSR changes referenced in PR #30606, then compare nearby CSR coverage patterns. Add DV coverage that exercises INSN_CNT beyond the smoke test and run the relevant OTBN DV test to confirm the CSR is covered.
Written by the indexing model from the issue text.
Assessment
- Domain
- testing
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 65/100