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T2: Enable LDPC encoding offload for all MCS

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- Rate matching performed by card
- Due to rate matching on card, small TBs are encoded correctly, so the
  limitation of encoding small TBs in CPU can be lifted (all TBs encoded
  on T2), see a later commits
This commit is contained in:
Jaroslava Fiedlerova
2024-01-25 17:21:11 +01:00
committed by Robert Schmidt
parent 2b717d4920
commit aa9cd6394a
2 changed files with 11 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder_offload.c
+7 -7
View File
@@ -568,14 +568,14 @@ static void set_ldpc_enc_op(struct rte_bbdev_enc_op **ops,
{
// struct rte_bbdev_op_ldpc_enc *ldpc_enc = &ref_op->ldpc_enc;
for (int i = 0; i < n; ++i) {
ops[i]->ldpc_enc.cb_params.e = 3 * p_offloadParams->E; // Fix mee: what is the correct size for "e" ???
ops[i]->ldpc_enc.cb_params.e = p_offloadParams->E;
ops[i]->ldpc_enc.basegraph = p_offloadParams->BG;
ops[i]->ldpc_enc.z_c = p_offloadParams->Z;
ops[i]->ldpc_enc.q_m = p_offloadParams->Qm;
ops[i]->ldpc_enc.n_filler = p_offloadParams->F;
ops[i]->ldpc_enc.n_cb = p_offloadParams->n_cb;
ops[i]->ldpc_enc.rv_index = p_offloadParams->rv;
ops[i]->ldpc_enc.op_flags = RTE_BBDEV_LDPC_INTERLEAVER_BYPASS; // RTE_BBDEV_LDPC_RATE_MATCH;
ops[i]->ldpc_enc.op_flags = RTE_BBDEV_LDPC_INTERLEAVER_BYPASS | RTE_BBDEV_LDPC_RATE_MATCH;
ops[i]->ldpc_enc.code_block_mode = 1;
ops[i]->ldpc_enc.output = outputs[start_idx + i];
ops[i]->ldpc_enc.input = inputs[start_idx + i];
@@ -613,7 +613,7 @@ static int retrieve_ldpc_enc_op(struct rte_bbdev_enc_op **ops, const uint16_t n,
for (i = 0; i < n; ++i) {
output = &ops[i]->ldpc_enc.output;
m = output->data;
uint16_t data_len = min((384 * 68) / 8, rte_pktmbuf_data_len(m)); // fix me
uint16_t data_len = min((LDPC_MAX_CB_SIZE) / 8, rte_pktmbuf_data_len(m)); // fix me
data = m->buf_addr;
for (int byte = 0; byte < data_len; byte++)
for (int bit = 0; bit < 8; bit++)
@@ -1103,10 +1103,10 @@ int32_t LDPCencoder(unsigned char **input, unsigned char **output, encoder_imple
.n_cb = (BG == 1) ? (66 * Zc) : (50 * Zc),
.BG = BG,
.Z = Zc,
.rv = 0, //impp->rv,
.F = 0, //impp->F,
.rv = impp->rv,
.F = impp->F,
.Qm = impp->Qm,
.Kr = impp->Kr};
.Kr = (impp->K - impp->F + 7)/8};
struct rte_bbdev_info info;
rte_bbdev_info_get(ad->dev_id, &info);
int socket_id = GET_SOCKET(info.socket_id);
@@ -1126,7 +1126,7 @@ int32_t LDPCencoder(unsigned char **input, unsigned char **output, encoder_imple
for (enum op_data_type type = DATA_INPUT; type < 3; type += 2) {
int ret = init_op_data_objs(*queue_ops[type],
*input,
(offloadParams.Kr + 7) / 8,
offloadParams.Kr,
m_head[type],
mbuf_pools[type],
1,
openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c
+4 -17
View File
@@ -363,7 +363,7 @@ int nr_dlsch_encoding(PHY_VARS_gNB *gNB,
impp.tparity = tparity;
impp.toutput = toutput;
impp.harq = harq;
if (gNB->ldpc_offload_flag && *rel15->mcsIndex > 2) {
if (gNB->ldpc_offload_flag) {
impp.Qm = rel15->qamModOrder[0];
impp.rv = rel15->rvIndex[0];
int nb_re_dmrs =
@@ -375,25 +375,12 @@ int nr_dlsch_encoding(PHY_VARS_gNB *gNB,
harq->unav_res,
rel15->qamModOrder[0],
rel15->nrOfLayers);
uint8_t tmp[68 * 384] __attribute__((aligned(32)));
uint8_t *d = tmp;
uint8_t tmp[BBDEV_LDPC_MAX_E] __attribute__((aligned(32)));
uint8_t *e = tmp;
int r_offset = 0;
for (int r = 0; r < impp.n_segments; r++) {
impp.E = nr_get_E(impp.G, impp.n_segments, impp.Qm, rel15->nrOfLayers, r);
impp.Kr = impp.K;
ldpc_interface_offload.LDPCencoder(&harq->c[r], &d, &impp);
uint8_t e[impp.E];
bzero(e, impp.E);
nr_rate_matching_ldpc(rel15->maintenance_parms_v3.tbSizeLbrmBytes,
impp.BG,
impp.Zc,
tmp,
e,
impp.n_segments,
impp.F,
impp.K - impp.F - 2 * impp.Zc,
impp.rv,
impp.E);
ldpc_interface_offload.LDPCencoder(&harq->c[r], &e, &impp);
nr_interleaving_ldpc(impp.E, impp.Qm, e, impp.output + r_offset);
r_offset += impp.E;
}