X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=src%2F5gnrsch%2Fsch_common.c;h=05037858a027c268147433f2a21ba5d43e20b742;hb=9fc4986e02c1ab2be2a9276cdfbf049c55af88e6;hp=5d79f162d10ea6c75304fbc3462bd07c6cb3c60f;hpb=694d8fa8539d4b69710b61d01d5a0535bb98716e;p=o-du%2Fl2.git

diff --git a/src/5gnrsch/sch_common.c b/src/5gnrsch/sch_common.c
index 5d79f162d..05037858a 100644
--- a/src/5gnrsch/sch_common.c
+++ b/src/5gnrsch/sch_common.c
@@ -60,8 +60,18 @@ File:     sch_common.c
 #include "du_app_mac_inf.h"
 #include "mac_sch_interface.h"
 #include "sch.h"
+#include "sch_utils.h"
 
 extern SchCb schCb[SCH_MAX_INST];
+extern uint16_t prachCfgIdxTable[MAX_PRACH_CONFIG_IDX][8];
+extern uint16_t numRbForPrachTable[MAX_RACH_NUM_RB_IDX][5];
+
+SchMacUlSchInfoFunc schMacUlSchInfoOpts[] =
+{
+	packSchMacUlSchInfo,
+	MacProcUlSchInfo,
+	packSchMacUlSchInfo
+};
 
 /**
  * @brief Time domain allocation for SSB
@@ -98,6 +108,7 @@ void ssbDlTdAlloc(uint8_t scs, uint8_t *ssbStartSymb)
 			DU_LOG("\nSCS %d is currently not supported", scs);
 	}
 }
+
 /**
  * @brief common resource allocation for SSB
  *
@@ -160,7 +171,146 @@ uint8_t schCmnDlAlloc(SchCellCb *cell, DlBrdcstAlloc *dlBrdcstAlloc)
 	return ROK;
 }
 
+/*******************************************************************
+ *
+ * @brief Handles sending UL scheduler info to MAC 
+ *
+ * @details
+ *
+ *    Function : sendUlSchInfoToMac
+ *
+ *    Functionality:
+ *     Sends UL Sch info to MAC from SCH
+ *
+ * @params[in] 
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+int sendUlSchInfoToMac(UlSchInfo *ulSchInfo, Inst inst)
+{
+	Pst pst;
+
+   memset(&pst, 0, sizeof(Pst));
+   SCH_FILL_RSP_PST(pst, inst);
+	pst.event = EVENT_UL_SCH_INFO;
+
+	return(*schMacUlSchInfoOpts[pst.selector])(&pst, ulSchInfo);
+
+}
+/**
+ * @brief resource allocation for PRACH
+ *
+ * @details
+ *
+ *     Function : schPrachResAlloc
+ *     
+ *     This function handles PRACH allocation
+ *     
+ *  @param[in]  SchCellCb *cell, cell cb
+ *  @param[in]  UlSchInfo *ulSchInfo, UL scheduling info
+ *  @return  void
+ **/
+int schPrachResAlloc(SchCellCb *cell, UlSchInfo *ulSchInfo)
+{
+   uint8_t  numPrachRb;
+	uint8_t  numRa;
+	uint8_t  freqStart;
+	uint16_t sfn;
+	uint16_t slot;
+	uint8_t  prachCfgIdx = 0;
+	uint8_t  prachFormat = 0;
+	uint8_t  x = 0;
+	uint8_t  y = 0;
+	uint8_t  prachSubframe = 0;
+	uint8_t  prachStartSymbol = 0;
+	uint8_t  prachOcas = 0;
+	uint8_t  dataType = 0;
+	uint8_t  idx = 0;
+	SchUlAlloc *ulAlloc = NULLP;
 
+	sfn  = cell->slotInfo.sfn;
+	slot = cell->slotInfo.slot; 
+	ulAlloc = cell->ulAlloc[cell->slotInfo.slot];
+	prachCfgIdx = cell->cellCfg.schRachCfg.prachCfgIdx;
+
+    /* derive the prachCfgIdx table paramters */
+	x                = prachCfgIdxTable[prachCfgIdx][1];
+	y                = prachCfgIdxTable[prachCfgIdx][2];
+	prachSubframe    = prachCfgIdxTable[prachCfgIdx][3];
+	
+	if((sfn%x) != y)
+	{
+	   /* prach occasion does not lie in this SFN */
+		DU_LOG("\nPRACH ocassion doesn't lie in this SFN");
+	   return RFAILED;
+	}
+	/* check for subFrame number */
+	if ((1 << slot) & prachSubframe)
+	{
+      /* prach ocassion present in this subframe */
+
+		prachFormat      = prachCfgIdxTable[prachCfgIdx][0];
+		prachStartSymbol = prachCfgIdxTable[prachCfgIdx][4];
+		prachOcas        = prachCfgIdxTable[prachCfgIdx][6];
+
+		/* freq domain resource determination for RACH*/
+		freqStart = cell->cellCfg.schRachCfg.msg1FreqStart;
+		/* numRa determined as 𝑛 belonging {0,1,.., M − 1}, 
+		 * where M is given by msg1Fdm */
+		numRa = (cell->cellCfg.schRachCfg.msg1Fdm - 1);
+		for(idx=0; idx<MAX_RACH_NUM_RB_IDX; idx++)
+		{
+         if(numRbForPrachTable[idx][0] == cell->cellCfg.schRachCfg.rootSeqIdx)
+			   break;
+		}
+		numPrachRb = numRbForPrachTable[idx][3];
+		/* Considering first slot in the frame for PRACH */
+		idx = 0;
+		ulAlloc->assignedPrb[idx] = freqStart+numPrachRb;
+	}
+
+	/* Fill UL SCH Info */
+	ulSchInfo->cellId = cell->cellId;
+	ulSchInfo->slotIndInfo.sfn = sfn;
+   ulSchInfo->slotIndInfo.slot = slot;
+	ulSchInfo->dataType = dataType | SCH_DATATYPE_PRACH;
+	/* prach info */
+	ulSchInfo->prachSchInfo.numPrachOcas   = prachOcas;
+	ulSchInfo->prachSchInfo.prachFormat    = prachFormat;
+	ulSchInfo->prachSchInfo.numRa          = numRa;
+	ulSchInfo->prachSchInfo.prachStartSymb = prachStartSymbol;
+
+	return ROK;
+}
+
+/**
+ * @brief resource allocation for UL
+ *
+ * @details
+ *
+ *     Function : schUlResAlloc
+ *     
+ *     This function handles UL Resource allocation
+ *     
+ *  @param[in]  SchCellCb *cell, cellCb
+ *  @return  void
+ **/
+int schUlResAlloc(SchCellCb *cell, Inst schInst)
+{
+   int ret = ROK;
+   UlSchInfo ulSchInfo;
+   /* Schedule resources for PRACH */
+	schPrachResAlloc(cell, &ulSchInfo);
+	//send msg to MAC
+   ret = sendUlSchInfoToMac(&ulSchInfo, schInst);
+   if(ret != ROK)
+   {
+      DU_LOG("\nSending UL Sch info from SCH to MAC failed");
+   }
+    
+	return ret;
+}
 /**********************************************************************
   End of file
  **********************************************************************/