Generalization of the nr_generate_csi_rs function to be able to call it in gNB and UE

cmake_targets/CMakeLists.txt

@@ -1584,9 +1584,10 @@ set(PHY_SRC_UE
 
   set(PHY_NR_SRC_COMMON
   ${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_prach_common.c
-  ${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/srs_modulation_nr.c
+  ${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_csi_rs.c
   ${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_scrambling.c
   ${OPENAIR1_DIR}/PHY/NR_REFSIG/scrambling_luts.c
+  ${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/srs_modulation_nr.c
   )
 
   set(PHY_NR_SRC
@@ -1610,7 +1611,6 @@ set(PHY_SRC_UE
   ${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
   ${OPENAIR1_DIR}/PHY/NR_REFSIG/ul_ref_seq_nr.c
   ${OPENAIR1_DIR}/PHY/NR_REFSIG/nr_dmrs_rx.c
-  ${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_csi_rs.c
   ${OPENAIR1_DIR}/PHY/NR_REFSIG/nr_gold.c
   ${OPENAIR1_DIR}/PHY/NR_REFSIG/nr_gen_mod_table.c
   ${OPENAIR1_DIR}/PHY/NR_REFSIG/dmrs_nr.c

openair1/PHY/NR_TRANSPORT/nr_csi_rs.c

@@ -27,8 +27,10 @@
 //#define NR_CSIRS_DEBUG
 
 
-void nr_generate_csi_rs(PHY_VARS_gNB *gNB,
+void nr_generate_csi_rs(NR_DL_FRAME_PARMS frame_parms,
+                        int32_t **dataF,
                         int16_t amp,
+                        uint32_t **gold_csi_rs,
                         nfapi_nr_dl_tti_csi_rs_pdu_rel15_t csi_params,
                         uint16_t cell_id,
                         int slot){
@@ -52,10 +54,7 @@ void nr_generate_csi_rs(PHY_VARS_gNB *gNB,
   LOG_I(NR_PHY, "csi_params.power_control_offset_ss = %i\n", csi_params.power_control_offset_ss);
 #endif
 
-  NR_DL_FRAME_PARMS frame_parms=gNB->frame_parms;
-  int32_t **txdataF = gNB->common_vars.txdataF;
-  int txdataF_offset = slot*frame_parms.samples_per_slot_wCP;
-  uint32_t **gold_csi_rs = gNB->nr_gold_csi_rs[slot];
+  int dataF_offset = slot*frame_parms.samples_per_slot_wCP;
   int16_t mod_csi[frame_parms.symbols_per_slot][NR_MAX_CSI_RS_LENGTH>>1] __attribute__((aligned(16)));;
   uint16_t b = csi_params.freq_domain;
   uint16_t n, csi_bw, csi_start, p, k, l, mprime, na, kpn, csi_length;
@@ -621,17 +620,17 @@ void nr_generate_csi_rs(PHY_VARS_gNB *gNB,
             }
             // ZP CSI RS
             if (csi_params.csi_type == 2) {
-              ((int16_t*)txdataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+(2*txdataF_offset)] = 0;
-              ((int16_t*)txdataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+1+(2*txdataF_offset)] = 0;
+              ((int16_t*)dataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+(2*dataF_offset)] = 0;
+              ((int16_t*)dataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+1+(2*dataF_offset)] = 0;
             }
             else {
-              ((int16_t*)txdataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+(2*txdataF_offset)] = (beta*wt*wf*mod_csi[l][mprime<<1]) >> 15;
-              ((int16_t*)txdataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+1+(2*txdataF_offset)] = (beta*wt*wf*mod_csi[l][(mprime<<1) + 1]) >> 15;
+              ((int16_t*)dataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+(2*dataF_offset)] = (beta*wt*wf*mod_csi[l][mprime<<1]) >> 15;
+              ((int16_t*)dataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+1+(2*dataF_offset)] = (beta*wt*wf*mod_csi[l][(mprime<<1) + 1]) >> 15;
             }
 #ifdef NR_CSIRS_DEBUG
             printf("l,k (%d %d)  seq. index %d \t port %d \t (%d,%d)\n",l,k,mprime,p+3000,
-                   ((int16_t*)txdataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+(2*txdataF_offset)],
-                   ((int16_t*)txdataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+1+(2*txdataF_offset)]);
+                   ((int16_t*)dataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+(2*dataF_offset)],
+                   ((int16_t*)dataF[p])[((l*frame_parms.ofdm_symbol_size + k)<<1)+1+(2*dataF_offset)]);
 #endif
           }
         }

openair1/PHY/NR_TRANSPORT/nr_transport_proto.h

@@ -335,8 +335,10 @@ void init_prach_ru_list(RU_t *ru);
 void free_nr_ru_prach_entry(RU_t *ru, int prach_id);
 uint8_t get_nr_prach_duration(uint8_t prach_format);
 
-void nr_generate_csi_rs(PHY_VARS_gNB *gNB,
+void nr_generate_csi_rs(NR_DL_FRAME_PARMS frame_parms,
+                        int32_t **dataF,
                         int16_t amp,
+                        uint32_t **gold_csi_rs,
                         nfapi_nr_dl_tti_csi_rs_pdu_rel15_t csi_params,
                         uint16_t cell_id,
                         int slot);

openair1/SCHED_NR/phy_procedures_nr_gNB.c

@@ -180,7 +180,7 @@ void phy_procedures_gNB_TX(processingData_L1tx_t *msgTx,
     if (csirs->active == 1) {
       LOG_D(PHY, "CSI-RS generation started in frame %d.%d\n",frame,slot);
       nfapi_nr_dl_tti_csi_rs_pdu_rel15_t csi_params = csirs->csirs_pdu.csi_rs_pdu_rel15;
-      nr_generate_csi_rs(gNB, AMP, csi_params, gNB->gNB_config.cell_config.phy_cell_id.value, slot);
+      nr_generate_csi_rs(gNB->frame_parms, gNB->common_vars.txdataF, AMP, gNB->nr_gold_csi_rs[slot], csi_params, gNB->gNB_config.cell_config.phy_cell_id.value, slot);
       csirs->active = 0;
     }
   }