Bfm Develop

Prerequisites

• docs/phase-2-architecture/architecture.md and io_definition.json present.
• refc/ reference model built (needed for cross-phase functional consistency check).
• SystemC 3.0+ and ARM AMBA-PV headers installed.

If missing: WARNING — proceed with available artifacts; note absent dependencies in smoke test result.

Apply steps 1-7 to every requested block — do not stop after the first.

Task(subagent_type="rtl-agent-team:video-processing-expert", prompt="Review bfm/src/ datapath models for signal processing accuracy vs docs/phase-1-research/iron-requirements.json.")

</Tool_Usage>

<Examples>
<example index="1">
<scenario>Five-block AXI pipeline; Phase 2 complete; LT transport requested.</scenario>
<expected_output>Five SC_MODULEs with b_transport and amba_pv::axi_extension; Memory Manager present; smoke test PASS; bfm/perf_baseline.json records per-block latency; all REQ-F-* mapped.</expected_output>
</example>

<example index="2">
<scenario>Out-of-order memory controller; AT timing accuracy explicitly requested.</scenario>
<expected_output>nb_transport_fw/bw with full 4-phase handshake (BEGIN_REQ→END_REQ→BEGIN_RESP→END_RESP); PEQ scheduling correct; smoke test PASS in AT mode.</expected_output>
</example>

<example index="3">
<scenario>BFM functional output diverges from refc/ on vector 23 during consistency check.</scenario>
<expected_output>Divergence recorded in perf_baseline.json with byte offset; bfm-dev fixes rounding in b_transport handler; re-run confirms bitexact match; bfm-feature-coverage.md updated.</expected_output>
</example>
</Examples>

<Escalation_And_Stop_Conditions>
- SystemC not available → halt; instruct user to install SystemC 3.0+ before proceeding.
- AMBA-PV headers not available → halt; instruct user to install ARM AMBA-PV library.
- Smoke test fails after 2 fix iterations → report failure with compile/runtime log; do not declare gate pass.
- AT 4-phase protocol deadlock → check PEQ callbacks for missing phase transitions.
- Feature coverage < 100% and user declines → record ADR with downstream verification impact; proceed only with explicit approval.
</Escalation_And_Stop_Conditions>

## Output

- `bfm/src/*.cpp` — SystemC TLM-2.0 BFM modules (C++17).
- `bfm/smoke_test_result.txt` — smoke test verdict with transport mode and latency.
- `bfm/perf_baseline.json` — per-block throughput and latency baseline.
- `reviews/phase-3-uarch/bfm-feature-coverage.md` — REQ-F-* mapping table.

<Final_Checklist>
- [ ] `bfm/src/*.cpp` compiles without errors (C++17).
- [ ] One `SC_MODULE` per architectural block.
- [ ] LT blocking transport (`b_transport`) used by default.
- [ ] If AT requested: all 4 phases present (BEGIN_REQ, END_REQ, BEGIN_RESP, END_RESP).
- [ ] AMBA protocol extensions set correctly (AXI burst/cache/prot).
- [ ] Memory Manager (`tlm_mm_interface`) used for payload pooling.
- [ ] PEQ (`peq_with_cb_and_phase`) used for phase scheduling.
- [ ] Smoke test passes; `bfm/smoke_test_result.txt` written.
- [ ] BFM per-block output matches `refc/` on shared test vectors (bitexact or documented tolerance).
- [ ] All `REQ-F-*` items mapped; `bfm-feature-coverage.md` saved.
- [ ] Missing features escalated; user-approved omissions have ADR.
- [ ] DPI-C interface provided if SV co-simulation required.
</Final_Checklist>