Commit Graph

6 Commits

Author SHA1 Message Date
d6e1b9d8ba refactor(cam): rename read-noise path to read-pass-through and reorganize test module structure
- Rename `read_noise` scenarios and noise_mode to `read_pass_through` across
  run_cam_correctness.py, test_run_cam_correctness.py, and Makefiles
- Update RTL comment in match_engine_pipeline.sv to reflect pass-through behavior
- Move unit-level cocotb tests from `tests.test_*` flat namespace to
  `tests.modules.*` and `tests.top.*` subdirectory layout, matching actual
  Makefile paths (hw/sim/tests/modules/..., hw/sim/tests/top/...)
- Remove redundant dual-noise subtarget from read_noise/Makefile
- Update help text and docs to reflect read-path pass-through semantics
- Add .codegraph to .gitignore
2026-05-27 16:34:34 +08:00
29f4cc91f6 fix(pipeline): add S_WAIT_READ_RESP state to fix read-noise PRNG timing
- Emit rd_valid_o for exactly one combinational cycle before waiting for
  read response, ensuring the read-noise PRNG advances once per batch issue
- Fix query handshake: wait for query_ready before asserting query_valid
  to avoid valid&&ready handshake drops on clock edges
- Add dynamic timeout estimation in test utilities based on DUT parameters
- Update test-top Makefile to run all noise configurations by default
- Remove uv run prefix from cocotb-config Makefile invocation
2026-05-22 19:04:50 +08:00
e4cbb5e30d feat(hw/rtl): implement full Top-K CAM search pipeline with serial result output
- add TOPK_K, FIFO_DEPTH, RESULT_SERIAL parameters to cam_params
- add candidate_fifo: synchronous ready/valid FIFO for (row, score) candidates
- add topk_tracker: tracks top-K candidates with clear/ready handshake
- add result_serializer: serializes packed Top-K array into rank-ordered stream
- refactor match_engine_pipeline from 4-state to 8-state Top-K pipeline
- extend cam_top with serial Top-K interface (result_rank/row/score/last)
- add backward-compatible top1_index/top1_score aliases from rank-0 beat
- add comprehensive tests for all new modules
2026-05-19 22:43:21 +08:00
8bcad1f23f refactor(core/cam_core_banked): extract per-bank modules for improved timing isolation
- Extract cam_bank as a parameterized submodule with independent read/write ports
- Replace flat 2D memory array with generate loop of bank instances
- Derive bank selection from address bit slicing instead of modulo arithmetic
- Align rd_base_row_i check with new bank addressing scheme
- Add test verifying bank address isolation across multiple banks
2026-05-19 16:17:08 +08:00
706d148a0b feat(hw): add CAM top-level synthesis infrastructure and fix RTL synthesis compatibility
- Add hw/syn/Makefile with hier/flat/full synth targets and artifact mirroring
- Add synth_cam_top_hier.ys for hierarchy-preserving resource estimation on Xilinx 7-series
- Add synth_cam_top_flat.ys for flattened Xilinx 7-series synthesis
- Add cam-synth just target for convenient invocation
- Guard runtime assertions (NUM_ROWS/LANES checks, noise seed checks, NOISE_BITS checks)
  behind SYNTHESIS guard in cam_core_banked, cam_read_noise, cam_write_noise, and noise_mask_grouped
- Fix shadowed 'return' variable in random128 xorshift128 function
2026-05-18 15:40:04 +08:00
0fbcd915bd refactor: reorganize RTL files into core/noise subdirectories
- Move CAM core modules (cam_core_banked, match_engine_pipeline, popcount_pipeline) to hw/rtl/core/
- Move noise modules (cam_read_noise, cam_write_noise, noise_mask_grouped) to hw/rtl/noise/
- Update Makefile include paths and VERILOG_SOURCES to reflect new layout
- Update docs/experiments.md file path references
- Add sim/results.xml to .gitignore
- Bump devenv.lock dependencies
2026-05-14 20:59:46 +08:00