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ldpc_t2: generalize for broader BBDEV support (ACC100/200)

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- Generalized LDPC T2 implementation to support other DPDK BBDEV
  accelerators (e.g., Intel ACC100/200)
- Added BBDEV capability checks during initialization
- Introduced LLR scaling to improve decoding performance on Intel ACC
  cards
- Implemented self-managed HARQ buffers for ACC200 (no internal HARQ
  memory)
- Library usage documentation update, and added developer documentation

Co-authored-by: Romain Beurdouche <romain.beurdouche@eurecom.fr>
This commit is contained in:
Xin Zhe Khooi
2025-08-05 18:37:58 +02:00
committed by Robert Schmidt
co-authored by Romain Beurdouche
parent b763692792
commit 61ea0a9e81
6 changed files with 928 additions and 239 deletions
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openair1/PHY/CODING/DOC/LDPCImplementation.md
+1 -1
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@@ -39,7 +39,7 @@ Building C object CMakeFiles/ldpc_t2.dir/openair1/PHY/CODING/nrLDPC_coding/nrLDP
Linking C shared module libldpc_t2.so
```
At runtime, to successfully use the T2 board, you need to install vendor specific drivers and tools.\
At runtime, to successfully use LDPC accelerators (e.g., Xilinx T2/Intel ACCs), you will need to install the corresponding drivers and tools.
Please refer to the dedicated documentation at [LDPC_T2_OFFLOAD_SETUP.md](file://../../../../doc/LDPC_T2_OFFLOAD_SETUP.md).
`./nr-softmodem -O libconfig:gnb.band78.sa.fr1.106PRB.usrpb210.conf:dbgl5 --rfsim --rfsimulator.serveraddr server --log_config.gtpu_log_level info --loader.ldpc.shlibversion _t2 --nrLDPC_coding_t2.dpdk_dev 01:00.0 --nrLDPC_coding_t2.dpdk_core_list 0-1`