Changes for copying PRACH data from xran buffer to oai buffer

targets/ARCH/ETHERNET/oran/5g/oran.cpp

@@ -525,6 +525,56 @@ return(0);
 }
 #endif
 
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+	int read_prach_data(ru_info_t *ru, int frame, int slot)
+	{
+		p_xran_dev_ctx_2 = xran_dev_get_ctx();
+		struct rte_mbuf *mb;
+
+		/* calculate tti and subframe_id from frame, slot num */
+		int tti = 10 * (frame) + (slot);
+		uint32_t subframe = XranGetSubFrameNum(tti, 2, 10);
+		uint32_t is_prach_slot = xran_is_prach_slot(subframe, (slot % 2));
+		int sym_idx = 0;
+
+		struct xran_prach_cp_config *pPrachCPConfig = &(p_xran_dev_ctx_2->PrachCPConfig);
+
+		/* If it is PRACH slot, copy prach IQ from XRAN PRACH buffer to OAI PRACH buffer */
+		if(is_prach_slot) {
+
+			for(sym_idx = 0; sym_idx < pPrachCPConfig->numSymbol; sym_idx++) {
+				mb = (struct rte_mbuf *) p_xran_dev_ctx_2->sFHPrachRxBbuIoBufCtrl[tti % 40][0][0].sBufferList.pBuffers[sym_idx].pCtrl;
+				if(mb) {
+					uint16_t *dst, *src;
+					int idx = 0;
+					dst = (uint16_t * )((uint8_t *)ru->prach_buf + (sym_idx*576));
+					src = (uint16_t *) ((uint8_t *) p_xran_dev_ctx_2->sFHPrachRxBbuIoBufCtrl[tti % 40][0][0].sBufferList.pBuffers[sym_idx].pData);
+
+					/* convert Network order to host order */
+					for (idx = 0; idx < 576/2; idx++)
+					{
+						dst[idx] = ntohs(src[idx]);
+					}
+
+				} else {
+					/* TODO: Unlikely this code never gets executed */
+					printf("%s():%d, There is no prach ctrl data for symb %d\n", __func__, __LINE__, sym_idx);
+				}
+			}
+		}
+
+		return(0);
+	}
+#ifdef __cplusplus
+}
+#endif
+
+
+
+
 #ifdef __cplusplus
 extern "C"
 {

targets/ARCH/ETHERNET/oran/5g/oran_isolate.c

@@ -288,6 +288,9 @@ void oran_fh_if4p5_south_in(RU_t *ru,
   ru_info_t ru_info;
   ru_info.nb_rx = ru->nb_rx;
   ru_info.rxdataF = ru->common.rxdataF;
+  ru_info.prach_buf = (int *)ru->prach_rxsigF[0][0];//index: [prach_oca][ant_id]
+
+  read_prach_data(&ru_info, *frame, *slot);
 
   int ret = xran_fh_rx_read_slot(s->oran_priv, &ru_info, *frame, *slot);  
 

targets/ARCH/ETHERNET/oran/5g/oran_isolate.h

@@ -43,6 +43,8 @@ typedef struct ru_info_s{
 	int nb_tx;
 	int32_t **txdataF_BF;
 
+        // Needed for Prach
+        int *prach_buf;
 } ru_info_t;
 
 #ifdef __cplusplus

targets/ARCH/ORAN_FHI/lib/xran_common.h

@@ -348,6 +348,7 @@ uint8_t xran_get_num_ant_elm(void *pHandle);
 enum xran_category xran_get_ru_category(void *pHandle);
 
 struct xran_device_ctx *xran_dev_get_ctx(void);
+int xran_is_prach_slot(uint32_t subframe_id, uint32_t slot_id);
 
 int xran_register_cb_mbuf2ring(xran_ethdi_mbuf_send_fn mbuf_send_cp, xran_ethdi_mbuf_send_fn mbuf_send_up);