some more error checks + data collection

openair1/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder_offload.c

@@ -1161,17 +1161,27 @@ pmd_lcore_ldpc_dec(void *arg)
 			deq += rte_bbdev_dequeue_ldpc_dec_ops(tp->dev_id,
 					queue_id, &ops_deq[deq], enq - deq);
 
+			//printf("enq %d, deq %d\n",enq,deq);
+
                 }
 
 		/* dequeue the remaining */
+		int trials=0;
 		while (deq < enq) {
 			deq += rte_bbdev_dequeue_ldpc_dec_ops(tp->dev_id,
 					queue_id, &ops_deq[deq], enq - deq);
+			usleep(10);
+			trials++;
+			if (trials>=100) {
+			  printf("aborting decoding after 100 dequeue tries\n");
+			  break;
+			}
 		}
 
 //		total_time += rte_rdtsc_precise() - start_time;
 	}
 
+	if (deq==enq) {
 	tp->iter_count = 0;
 	/* get the max of iter_count for all dequeued ops */
 	for (i = 0; i < num_ops; ++i) {
@@ -1182,6 +1192,10 @@ pmd_lcore_ldpc_dec(void *arg)
 	ret = retrieve_ldpc_dec_op(ops_deq, num_ops, ref_op,
 				tp->op_params->vector_mask, p_out);
 		TEST_ASSERT_SUCCESS(ret, "Validation failed!");
+	}
+	else {
+	  ret = TEST_FAILED;
+	}
 
 	rte_bbdev_dec_op_free_bulk(ops_enq, num_ops);
 
@@ -1193,7 +1207,7 @@ pmd_lcore_ldpc_dec(void *arg)
 			1000000.0) / ((double)total_time /
 			(double)rte_get_tsc_hz());
 	*/	
-	return TEST_SUCCESS;
+	return ret;
 }
 
 
@@ -1513,14 +1527,14 @@ int32_t nrLDPC_decod_offload(t_nrLDPC_dec_params* p_decParams, uint8_t C, uint8_
 				info.drv.min_alignment,
 				socket_id);
 		if (f_ret != TEST_SUCCESS) {
-			printf("Couldn't init queue buffers");
+			printf("Couldn't init queue buffers\n");
 			return(-1);
 		}
 	}
 
         ret = start_pmd_dec(ad, op_params, p_offloadParams, p_out);
         if (ret<0) {
-          printf("Couldn't start pmd dec");
+          printf("Couldn't start pmd dec\n");
           return(-1);
         }
 	break;

openair1/PHY/INIT/nr_init.c

@@ -109,7 +109,9 @@ int phy_init_nr_gNB(PHY_VARS_gNB *gNB,
   init_pucch2_luts();
 
   load_nrLDPClib(NULL);
-  load_nrLDPClib_offload(); 
+
+  if (gNB->ldpc_offload_flag)
+    load_nrLDPClib_offload(); 
 
   // PBCH DMRS gold sequences generation
   nr_init_pbch_dmrs(gNB);

openair1/PHY/NR_TRANSPORT/nr_ulsch_decoding.c

@@ -609,24 +609,31 @@ uint32_t nr_ulsch_decoding(PHY_VARS_gNB *phy_vars_gNB,
 			Qm,
  			(int8_t*)&pl_ol128[0],
 			llrProcBuf, 1);
-       
-	 for (int m=0; m < Kr>>3; m ++) {
-	    harq_process->c[r][m]= (uint8_t) llrProcBuf[m];
-  	}
-
-  if (check_crc((uint8_t*)llrProcBuf,length_dec,harq_process->F,crc_type)) {
+   
+  if (ret<0) {
+    no_iteration_ldpc = ulsch->max_ldpc_iterations + 1;
+  }
+  else {
+    
+    for (int m=0; m < Kr>>3; m ++) {
+      harq_process->c[r][m]= (uint8_t) llrProcBuf[m];
+    }
+    
+    if (check_crc((uint8_t*)llrProcBuf,length_dec,harq_process->F,crc_type)) {
 #ifdef PRINT_CRC_CHECK
       LOG_I(PHY, "Segment %d CRC OK\n",r);
 #endif
-    no_iteration_ldpc = 2;
-  } else {
+      no_iteration_ldpc = 2;
+    } else {
 #ifdef PRINT_CRC_CHECK
       LOG_I(PHY, "CRC NOK\n");
 #endif
-    no_iteration_ldpc = ulsch->max_ldpc_iterations + 1;
+      no_iteration_ldpc = ulsch->max_ldpc_iterations + 1;
+    }
   }
 
   r_offset += E;
+
       	/*for (int k=0;k<8;k++)
         {
         printf("output decoder [%d] =  0x%02x \n", k, harq_process->c[r][k]);
@@ -646,6 +653,7 @@ uint32_t nr_ulsch_decoding(PHY_VARS_gNB *phy_vars_gNB,
       		LOG_I(PHY,"uplink segment error %d/%d\n",r,harq_process->C);
    		LOG_D(PHY, "ULSCH %d in error\n",ULSCH_id);
       		harq_process->processedSegments=harq_process->C;
+      		r=harq_process->C;
     	 }
   	}  	
 	if (harq_process->processedSegments==harq_process->C){

openair1/SIMULATION/NR_PHY/ulsim.c

@@ -312,6 +312,7 @@ int main(int argc, char **argv)
   uint8_t snrRun;
   int prb_inter = 0;
   int ldpc_offload_flag = 0;
+  uint8_t max_rounds = 4;
 
   int enable_ptrs = 0;
   int modify_dmrs = 0;
@@ -345,7 +346,7 @@ int main(int argc, char **argv)
   /* initialize the sin-cos table */
    InitSinLUT();
 
-  while ((c = getopt(argc, argv, "a:b:c:d:ef:g:h:ikl:m:n:o:p:r:s:u:w:y:z:F:G:H:M:N:PR:S:T:U:L:Z")) != -1) {
+  while ((c = getopt(argc, argv, "a:b:c:d:ef:g:h:ikl:m:n:o:p:q:r:s:u:w:y:z:F:G:H:M:N:PR:S:T:U:L:Z")) != -1) {
     printf("handling optarg %c\n",c);
     switch (c) {
 
@@ -465,6 +466,10 @@ int main(int argc, char **argv)
     case 'p':
       extended_prefix_flag = 1;
       break;
+
+    case 'q':
+      max_rounds = atoi(optarg);
+      break;
       
     case 'r':
       nb_rb = atoi(optarg);
@@ -756,7 +761,11 @@ int main(int argc, char **argv)
   nfapi_nr_config_request_scf_t *cfg = &gNB->gNB_config;
   cfg->carrier_config.num_tx_ant.value = n_tx;
   cfg->carrier_config.num_rx_ant.value = n_rx;
+
 //  nr_phy_config_request_sim(gNB,N_RB_DL,N_RB_DL,mu,0,0x01);
+
+  gNB->ldpc_offload_flag = ldpc_offload_flag;
+
   phy_init_nr_gNB(gNB,0,1);
   N_RB_DL = gNB->frame_parms.N_RB_DL;
 
@@ -810,7 +819,6 @@ int main(int argc, char **argv)
 
   unsigned char harq_pid = 0;
   
-  gNB->ldpc_offload_flag = ldpc_offload_flag;
   NR_gNB_ULSCH_t *ulsch_gNB = gNB->ulsch[UE_id][0];
   //nfapi_nr_ul_config_ulsch_pdu *rel15_ul = &ulsch_gNB->harq_processes[harq_pid]->ulsch_pdu;
   nfapi_nr_ul_tti_request_t     *UL_tti_req  = malloc(sizeof(*UL_tti_req));
@@ -845,7 +853,6 @@ int main(int argc, char **argv)
   uint16_t n_rb1 = 75;
   
   uint16_t pdu_bit_map = PUSCH_PDU_BITMAP_PUSCH_DATA; // | PUSCH_PDU_BITMAP_PUSCH_PTRS;
-  uint8_t max_rounds = 4;
   uint8_t crc_status = 0;
 
   unsigned char mod_order = nr_get_Qm_ul(Imcs, mcs_table);
@@ -1014,12 +1021,14 @@ int main(int argc, char **argv)
   double blerStats[4][100];
   double berStats[4][100];
   double snrStats[100];
+  double ldpcDecStats[100];
   memset(errors_scrambling, 0, sizeof(uint32_t)*4*100);
   memset(n_errors, 0, sizeof(int)*4*100);
   memset(round_trials, 0, sizeof(int)*4*100);
   memset(blerStats, 0, sizeof(double)*4*100);
   memset(berStats, 0, sizeof(double)*4*100);
   memset(snrStats, 0, sizeof(double)*100);
+  memset(ldpcDecStats, 0, sizeof(double)*100);
   for (SNR = snr0; SNR < snr1; SNR += snr_step) {
     varArray_t *table_rx=initVarArray(1000,sizeof(double));
     int error_flag = 0;
@@ -1421,16 +1430,16 @@ int main(int argc, char **argv)
 	errors_decoding++;
       }
     }
-    if (n_trials == 1) {
+    /*if (n_trials == 1) {
       for (int r=0;r<ulsch_ue[0]->harq_processes[harq_pid]->C;r++) 
 	for (int i=0;i<ulsch_ue[0]->harq_processes[harq_pid]->K>>3;i++) {
-	  if ((ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]) != 0) printf("************");
-	    /*printf("r %d: in[%d] %x, out[%d] %x (%x)\n",r,
+	  if ((ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]) != 0) 
+	    printf("r %d: in[%d] %x, out[%d] %x (%x)\n",r,
 	    i,ulsch_ue[0]->harq_processes[harq_pid]->c[r][i],
 	    i,ulsch_gNB->harq_processes[harq_pid]->c[r][i],
-	    ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]);*/
+	    ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]);
 	}
-    }
+    }*/
     if (errors_decoding > 0 && error_flag == 0) {
       n_false_positive++;
       if (n_trials==1)
@@ -1496,6 +1505,8 @@ int main(int argc, char **argv)
       printf("\n");
     }
 
+    ldpcDecStats[snrRun] = gNB->ulsch_decoding_stats.trials?inMicroS(gNB->ulsch_decoding_stats.diff/gNB->ulsch_decoding_stats.trials):0;
+
     if(n_trials==1)
       break;
 
@@ -1540,9 +1551,11 @@ int main(int argc, char **argv)
   LOG_MM("ulsimStats.m","BER_round3",berStats[3],snrRun,1,7);
   LOG_MM("ulsimStats.m","EffRate",effRate,snrRun,1,7);
   LOG_MM("ulsimStats.m","EffTP",effTP,snrRun,1,7);
+  LOG_MM("ulsimStats.m","LDPC_dec_time",ldpcDecStats,snrRun,1,7);
   free(test_input_bit);
   free(estimated_output_bit);
-  free_nrLDPClib_offload();
+  if (gNB->ldpc_offload_flag)
+    free_nrLDPClib_offload();
 
   if (output_fd)
     fclose(output_fd);