Add T2 LDPC encoding/decoding offload

executables/nr-gnb.c

@@ -593,6 +593,7 @@ void init_eNB_afterRU(void) {
     LOG_I(PHY,"RC.nb_nr_CC[inst:%d]:%p\n", inst, RC.gNB[inst]);
 
     gNB = RC.gNB[inst];
+    gNB->ldpc_offload_flag = ldpc_offload_flag;
     gNB->reorder_thread_disable = get_softmodem_params()->reorder_thread_disable;
 
     phy_init_nr_gNB(gNB);

executables/nr-softmodem-common.h

@@ -98,6 +98,7 @@
 #define CONFIG_HLP_WORKER_CMD    "two option for worker 'WORKER_DISABLE' or 'WORKER_ENABLE'\n"
 #define CONFIG_HLP_USRP_THREAD   "having extra thead for usrp tx\n"
 #define CONFIG_HLP_DISABLNBIOT   "disable nb-iot, even if defined in config\n"
+#define CONFIG_HLP_LDPC_OFFLOAD  "enable LDPC offload to AMD Xilinx T2 card\n"
 #define CONFIG_HLP_USRP_ARGS     "set the arguments to identify USRP (same syntax as in UHD)\n"
 #define CONFIG_HLP_TX_SUBDEV     "set the arguments to select tx_subdev (same syntax as in UHD)\n"
 #define CONFIG_HLP_RX_SUBDEV     "set the arguments to select rx_subdev (same syntax as in UHD)\n"

executables/nr-softmodem.h

@@ -29,6 +29,7 @@
   {"D" ,                    CONFIG_HLP_DLBM_PHYTEST,   0,                .u64ptr=&dlsch_slot_bitmap,          .defintval=0,                     TYPE_UINT64, 0},        \
   {"U" ,                    CONFIG_HLP_ULBM_PHYTEST,   0,                .u64ptr=&ulsch_slot_bitmap,          .defintval=0,                     TYPE_UINT64, 0},        \
   {"usrp-tx-thread-config", CONFIG_HLP_USRP_THREAD,    0,                .iptr=&usrp_tx_thread,               .defstrval=0,                     TYPE_INT,    0},        \
+  {"ldpc-offload-enable",   CONFIG_HLP_LDPC_OFFLOAD,   0,                .iptr=&ldpc_offload_flag,            .defstrval=0,                     TYPE_INT,    0},        \
   {"uecap_file",            CONFIG_HLP_UECAP_FILE,     0,                .strptr=&uecap_file,                 .defstrval="./uecap_ports1.xml",  TYPE_STRING, 0},        \
   {"s" ,                    CONFIG_HLP_SNR,            0,                .dblptr=&snr_dB,                     .defdblval=25,                    TYPE_DOUBLE, 0},        \
 }
@@ -43,6 +44,7 @@ extern uint32_t target_ul_bw;
 extern uint64_t dlsch_slot_bitmap;
 extern uint64_t ulsch_slot_bitmap;
 extern char *uecap_file;
+extern int ldpc_offload_flag;
 
 // In nr-gnb.c
 extern void init_gNB(int single_thread_flag,int wait_for_sync);

executables/nr-uesoftmodem.c

@@ -429,7 +429,7 @@ int NB_UE_INST = 1;
 configmodule_interface_t *uniqCfg = NULL;
 
 // A global var to reduce the changes size
-ldpc_interface_t ldpc_interface = {0};
+ldpc_interface_t ldpc_interface = {0}, ldpc_interface_offload = {0};
 
 int main( int argc, char **argv ) {
   int set_exe_prio = 1;

executables/softmodem-common.c

@@ -47,6 +47,7 @@ char *parallel_config=NULL;
 char *worker_config=NULL;
 int usrp_tx_thread = 0;
 char *nfapi_str=NULL;
+int ldpc_offload_flag=0;
 uint8_t nfapi_mode=0;
 
 static mapping softmodem_funcs[] = MAPPING_SOFTMODEM_FUNCTIONS;

executables/softmodem-common.h

@@ -368,6 +368,7 @@ extern int32_t uplink_frequency_offset[MAX_NUM_CCs][4];
 extern int usrp_tx_thread;
 extern uint16_t sl_ahead;
 extern uint16_t sf_ahead;
+extern int ldpc_offload_flag;
 extern int oai_exit;
 
 void tx_func(void *param);