Backend: Make Compute Engine instantiation a SV parameter#159
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- This target generates C headers in `target/sw` with both the `raw-header` and `c-header` PeakRDL plugins - Also added to `deploy` CI job
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July 16, 2026 16:17
- the PeakRDL `c-header` plugin generates structs with `__attribute__((__packed__))` which ensures proper packing of fields but can also cause the compiler to emit byte loads/stores to access 32-bit registers, which is definitely not what we want. The `unpacked` version of the C header has the attribute removed. - The `idma_sw_clean` target had a typo and didn't actually clean anything, this is fixed now.
- Replace `enable_compute` in backend generation with a SystemVerilog parameter - Add `EnableCompute`, `ComputeOps`, and `ComputeFullDuplex` parameters to eligible backend, synthesis wrapper, and transport-layer modules. - Omit compute parameters entirely for generated topologies that cannot support the compute datapath - Keep the non-compute path available in compute-capable variants with `EnableCompute = 0`, and instantiate `idma_otf_compute` only when enabled. - Remove `IDMA_VIDMA_IDS` / `--compute-ids` plumbing from the generator and makefile; compute support is now selected at elaboration. - Update transpose testbenches to enable compute explicitly and keep the inst64 frontend backend instantiation compute-disabled
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Make instantiation of compute engines an elaboration-time parameter rather than a generation-time one:
enable_computein backend generation with a SystemVerilog parameterEnableCompute,ComputeOps, andComputeFullDuplexparameters toeligible backend, synthesis wrapper, and transport-layer modules.
initread port won't have the parameters as transposing zeros doesn't make sense)the compute datapath
EnableCompute = 0, and instantiateidma_otf_computeonly when enabled.IDMA_VIDMA_IDS/--compute-idsplumbing from the generator andmakefile; compute support is now selected at elaboration.
frontend backend instantiation compute-disabled