X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=src%2F5gnrmac%2Fmac_slot_ind.c;h=2492f2a73eb3c607070e91ec2355189d8a4a2ffc;hb=de6a435729e3cad9d4a66329080b8206a64f452c;hp=c30b946398dc0b9da5f105a4aea7768f78ce2f1a;hpb=0d34456980069864f19fe3090ed5a4c968fe2d45;p=o-du%2Fl2.git

diff --git a/src/5gnrmac/mac_slot_ind.c b/src/5gnrmac/mac_slot_ind.c
index c30b94639..2492f2a73 100644
--- a/src/5gnrmac/mac_slot_ind.c
+++ b/src/5gnrmac/mac_slot_ind.c
@@ -17,31 +17,25 @@
  *******************************************************************************/
 /* header include files (.h) */
 #include "common_def.h"
-#include "rgu.h"
-#include "tfu.h"           /* RGU Interface includes */
 #include "lrg.h"
-#include "crg.h"           /* layer management defines for LTE-MAC */
-#include "rg_sch_inf.h"           /* layer management defines for LTE-MAC */
-#include "rg_env.h"   
-#include "rg.h"
-
-#include "rgu.x"
-#include "tfu.x"           /* RGU Interface includes */
 #include "lrg.x"
-#include "crg.x"           /* layer management typedefs for MAC */
-#include "rg_sch_inf.x"    /* SCH interface typedefs */
-#include "rg_prg.x"
 #include "du_app_mac_inf.h"
+#include "mac_sch_interface.h"
+#include "lwr_mac_upr_inf.h"
+#include "rlc_mac_inf.h"
 #include "mac.h"
-#include "du_log.h"
-#include "rg.x"
 #include "mac_upr_inf_api.h"
+#include "lwr_mac.h"
+#include "lwr_mac_fsm.h"
+#include "mac_utils.h"
+#include "mac_harq_dl.h"
+#include "lwr_mac_phy.h"
 
 /* function pointers for packing slot ind from mac to sch */
 MacSchSlotIndFunc macSchSlotIndOpts[] =
 {
    packMacSchSlotInd,
-   macSchSlotInd,
+   MacSchSlotInd,
    packMacSchSlotInd
 };
 
@@ -56,98 +50,321 @@ MacSchSlotIndFunc macSchSlotIndOpts[] =
  *           
  *  @param[in]  Pst            *pst
  *  @param[in]  DL allocation from scheduler
- *  @return  S16
+ *  @return
  *      -# ROK 
  *      -# RFAILED 
  **/
-int MacProcDlAlloc(Pst *pst, DlSchedInfo *dlSchedInfo)
+uint8_t MacProcDlAlloc(Pst *pst, DlSchedInfo *dlSchedInfo)
 {
-   MacDlSlot *currDlSlot = NULLP;
+   uint8_t   schInfoIdx = 0, cwIdx = 0;
+   uint8_t   ueId = 0, ueIdx = 0;
+   uint16_t  cellIdx = 0;
+   uint8_t   *retxTb = NULLP, *txPdu = NULLP;
+   uint16_t  txPduLen = 0;
+   MacDlSlot      *currDlSlot = NULLP;
+   DlMsgSchInfo   schedInfo;
+   DlHarqProcCb   *hqProcCb = NULLP;
 
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTSCH -> ENTMAC : EVENT_DL_SCH_INFO\n");
+#endif
    if(dlSchedInfo != NULLP)
    {
-		if(dlSchedInfo->isBroadcastPres)
-		{
-		   currDlSlot = &macCb.macCell->dlSlot[dlSchedInfo->schSlotValue.broadcastTime.slot];
-		   currDlSlot->dlInfo.isBroadcastPres = true;
-			memcpy(&currDlSlot->dlInfo.brdcstAlloc, &dlSchedInfo->brdcstAlloc, sizeof(DlBrdcstAlloc));
-		}
-
-		if(dlSchedInfo->rarAlloc != NULLP)
-		{
-		   currDlSlot = &macCb.macCell->dlSlot[dlSchedInfo->schSlotValue.rarTime.slot];
-			currDlSlot->dlInfo.rarAlloc = dlSchedInfo->rarAlloc;
-
-         /* MUXing of RAR */
-			fillRarPdu(&currDlSlot->dlInfo.rarAlloc->rarInfo);
-		}
-
-		if(dlSchedInfo->msg4Alloc != NULLP)
+      GET_CELL_IDX(dlSchedInfo->cellId, cellIdx);
+      if(dlSchedInfo->isBroadcastPres)
+      {
+         currDlSlot = &macCb.macCell[cellIdx]->\
+                      dlSlot[dlSchedInfo->schSlotValue.broadcastTime.slot];
+         currDlSlot->dlInfo.isBroadcastPres = true;
+         memcpy(&currDlSlot->dlInfo.brdcstAlloc, &dlSchedInfo->brdcstAlloc, sizeof(DlBrdcstAlloc));
+         currDlSlot->dlInfo.brdcstAlloc.sib1Alloc.sib1PdcchCfg.dci.pdschCfg = \
+                                            &currDlSlot->dlInfo.brdcstAlloc.sib1Alloc.sib1PdschCfg;
+      }
+
+      for(ueIdx=0; ueIdx<MAX_NUM_UE; ueIdx++)
+      {
+         if(dlSchedInfo->rarAlloc[ueIdx] != NULLP)
+         {
+            currDlSlot = &macCb.macCell[cellIdx]->dlSlot[dlSchedInfo->schSlotValue.rarTime.slot];
+            currDlSlot->dlInfo.rarAlloc[ueIdx] = dlSchedInfo->rarAlloc[ueIdx];
+
+            /* MUXing of RAR */
+            fillRarPdu(&currDlSlot->dlInfo.rarAlloc[ueIdx]->rarInfo);
+         }
+
+         if(dlSchedInfo->dlMsgAlloc[ueIdx] != NULLP)
+         {
+            currDlSlot = &macCb.macCell[cellIdx]->\
+                         dlSlot[dlSchedInfo->schSlotValue.dlMsgTime.slot];
+            currDlSlot->dlInfo.dlMsgAlloc[ueIdx] = dlSchedInfo->dlMsgAlloc[ueIdx]; /* copy msg4 alloc pointer in MAC slot info */
+            currDlSlot->dlInfo.cellId = dlSchedInfo->cellId;
+
+            /* Check if the downlink pdu is msg4 */
+            for(schInfoIdx=0; schInfoIdx < dlSchedInfo->dlMsgAlloc[ueIdx]->numSchedInfo; schInfoIdx++)
+            {
+               if(dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo.isMsg4Pdu)
+               {
+                  GET_UE_ID(dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo.crnti, ueId);
+                  ueIdx = ueId -1;
+                  schedInfo = dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx];
+                  hqProcCb = &macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4HqInfo;
+
+                  if(!dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].isRetx)
+                  {
+                     /* First transmission of MSG4 */
+                     hqProcCb->procId = schedInfo.dlMsgInfo.harqProcNum;
+                     for(cwIdx = 0; cwIdx < schedInfo.dlMsgPdschCfg.numCodewords; cwIdx++)
+                     {
+                        memcpy(&hqProcCb->tbInfo[hqProcCb->numTb].txTime, &dlSchedInfo->schSlotValue.dlMsgTime, \
+                              sizeof(SlotTimingInfo));
+                        hqProcCb->tbInfo[hqProcCb->numTb].tbSize = schedInfo.dlMsgPdschCfg.codeword[cwIdx].tbSize;
+                        hqProcCb->numTb++;
+                     }
+                  }
+                  else
+                  {
+                     /* MSG4 retransmission */
+                     if(hqProcCb->procId == schedInfo.dlMsgInfo.harqProcNum)
+                     {
+                        memcpy(&hqProcCb->tbInfo[0].txTime, &dlSchedInfo->schSlotValue.dlMsgTime, \
+                                                     sizeof(SlotTimingInfo));
+                     }
+                  }
+               }
+               else
+               {
+                  memcpy(&currDlSlot->dlInfo.schSlotValue, &dlSchedInfo->schSlotValue, sizeof(SchSlotValue));
+                  
+                  if(!dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].isRetx)
+                  {
+                     /* If new data transmission is scheduled, send schedule results to RLC */
+                     if((dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].pduPres == PDSCH_PDU) ||
+                           (dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].pduPres == BOTH))
+                     {
+                        sendSchedRptToRlc(currDlSlot->dlInfo, dlSchedInfo->schSlotValue.dlMsgTime, ueIdx, schInfoIdx);
+
+                        /* Add HARQ Proc to DL HARQ Proc Entity in UE */
+                        addDlHqProcInUe(currDlSlot->dlInfo.schSlotValue.dlMsgTime, &macCb.macCell[cellIdx]->ueCb[ueIdx], \
+                           dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx]);
+                     }
+                  }
+                  else
+                  {
+                     /* For retransmission, fetch PDU to be retransmitted from DL HARQ entity and schedule on corresponding slot */
+                     
+                     /* As of now this loop will run only once for one TB. 
+                      * TODO : update handling of fetched TB appropriately when support for two TB is added 
+                      */
+                     for(cwIdx = 0; \
+                           cwIdx < dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgPdschCfg.numCodewords;\
+                           cwIdx++)
+                     {
+                        /* Fetch TB to be retransmitted */
+                        txPduLen = dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgPdschCfg.codeword[cwIdx].tbSize;
+                        retxTb = fetchTbfromDlHarqProc(currDlSlot->dlInfo.schSlotValue.dlMsgTime, \
+                              &macCb.macCell[cellIdx]->ueCb[ueIdx], \
+                              dlSchedInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo.harqProcNum, txPduLen);
+
+                        /* Store PDU in corresponding DL slot */
+                        MAC_ALLOC(txPdu, txPduLen);
+                        if(!txPdu)
+                        {
+                           DU_LOG("\nERROR  -->  MAC : Memory allocation failed in MacProcRlcDlData");
+                           return RFAILED;
+                        }   
+                        memcpy(txPdu, retxTb,  txPduLen);
+
+                        currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo.dlMsgPduLen = txPduLen;
+                        currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo.dlMsgPdu = txPdu;
+                     }
+                  }
+               }
+            }
+         }
+      }
+
+      if(dlSchedInfo->ulGrant != NULLP)
       {
-         Msg4Alloc *msg4Alloc = NULLP;
-		   currDlSlot = &macCb.macCell->dlSlot[dlSchedInfo->schSlotValue.msg4Time.slot];
-			currDlSlot->dlInfo.msg4Alloc = dlSchedInfo->msg4Alloc; /* copy msg4 alloc pointer in MAC slot info */
-			msg4Alloc = dlSchedInfo->msg4Alloc;
-         macCb.macCell->macRaCb[0].msg4TbSize = msg4Alloc->msg4PdschCfg.codeword[0].tbSize;
+         currDlSlot = &macCb.macCell[cellIdx]->dlSlot[dlSchedInfo->schSlotValue.ulDciTime.slot];
+         currDlSlot->dlInfo.ulGrant = dlSchedInfo->ulGrant;
       }
    }
    return ROK;
 }
 
-void BuildAndSendMsg4MuxPdu(Msg4Alloc *msg4Alloc)
-{ 
+/**
+ * @brief process DL Paging allocation from scheduler
+ *
+ * @details
+ *
+ *     Function : MacProcDlPageAlloc 
+ *      
+ *      This function copied dl Pag info in the mac slot info
+ *           
+ *  @param[in]  Pst            *pst
+ *  @param[in]  DL Paging allocation from scheduler
+ *  @return
+ *      -# ROK 
+ *      -# RFAILED 
+ **/
+uint8_t MacProcDlPageAlloc(Pst *pst, DlPageAlloc *dlPageAlloc)
+{
+   uint16_t  cellIdx = 0;
+   MacDlSlot *currDlSlot = NULLP;
+
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTSCH -> ENTMAC : EVENT_DL_PAGING_ALLOC\n");
+#endif
+   if(dlPageAlloc != NULLP)
+   {
+      GET_CELL_IDX(dlPageAlloc->cellId, cellIdx);
+
+      currDlSlot = &macCb.macCell[cellIdx]->dlSlot[dlPageAlloc->dlPageTime.slot];
+      MAC_ALLOC(currDlSlot->pageAllocInfo, sizeof(DlPageAlloc));
+      if(currDlSlot->pageAllocInfo == NULLP)
+      {
+         DU_LOG("\nERROR  --> MAC : MacProcDlPageAlloc : Memory Allocation is failed!");
+         return RFAILED;
+      }
+      memcpy(currDlSlot->pageAllocInfo, dlPageAlloc, sizeof(DlPageAlloc));
+      currDlSlot->pageAllocInfo->pagePdcchCfg.dci.pdschCfg = \
+                                                             &currDlSlot->pageAllocInfo->pagePdschCfg;
+   }
+   else
+   {
+      DU_LOG("\nERROR  --> MAC : DL Paging Allocation is failed!");
+      return RFAILED;
+   }
+   return ROK;
+}
+
+/**
+ * @brief Forming and filling the MUX Pdu
+ * @details
+ *
+ *     Function : fillMsg4Pdu
+ * 
+ *      Forming and filling of Msg4Pdu
+ *           
+ *  @param[in]  DlMsgAlloc  *msg4Alloc
+ *  @return  void
+ **/
+void fillMsg4Pdu(uint16_t cellId, DlMsgSchInfo *msg4SchInfo)
+{
+   uint8_t   ueId = 0, ueIdx = 0;
+   uint16_t  cellIdx;
+   uint16_t  msg4TxPduLen;
    MacDlData msg4DlData;
    MacCeInfo  macCeData;
+   DlHarqProcCb *hqProcCb;
+
+   GET_CELL_IDX(cellId, cellIdx);
 
    memset(&msg4DlData, 0, sizeof(MacDlData));
    memset(&macCeData, 0, sizeof(MacCeInfo));
- 
-   if(macCb.macCell->macRaCb[0].msg4Pdu != NULLP)
+
+   GET_UE_ID(msg4SchInfo->dlMsgInfo.crnti, ueId);
+   ueIdx = ueId -1;
+
+   if(macCb.macCell[cellIdx] == NULLP)
    {
-      MAC_ALLOC(msg4DlData.pduInfo[0].dlPdu, \
-        macCb.macCell->macRaCb[0].msg4PduLen);
-      if(msg4DlData.pduInfo[0].dlPdu != NULLP)
+      DU_LOG("\nERROR -->  MAC: Cell Id[%d] not found", cellId);
+      return;
+   }
+
+   hqProcCb = &macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4HqInfo;
+   msg4TxPduLen = hqProcCb->tbInfo[0].tbSize - TX_PAYLOAD_HDR_LEN;
+
+   if(macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4Pdu != NULLP)
+   {
+      MAC_ALLOC(msg4DlData.pduInfo[msg4DlData.numPdu].dlPdu, macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4PduLen);
+      if(msg4DlData.pduInfo[msg4DlData.numPdu].dlPdu != NULLP)
       {
-         fillMsg4DlData(&msg4DlData, macCb.macCell->macRaCb[0].msg4Pdu);
-         fillMacCe(&macCeData, &macCb.macCell->macRaCb[0].msg3Pdu);
+         fillMsg4DlData(&msg4DlData, macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4PduLen, \
+            macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4Pdu);
+         fillMacCe(&macCeData, macCb.macCell[cellIdx]->macRaCb[ueIdx].msg3Pdu);
+
          /* Forming Mux Pdu */
-			macCb.macCell->macRaCb[0].msg4TxPdu = NULLP;
-			MAC_ALLOC(macCb.macCell->macRaCb[0].msg4TxPdu, macCb.macCell->macRaCb[0].msg4TbSize);
-         if(macCb.macCell->macRaCb[0].msg4TxPdu != NULLP)
+         hqProcCb->tbInfo[0].tb = NULLP;
+         MAC_ALLOC(hqProcCb->tbInfo[0].tb, msg4TxPduLen);
+         if(hqProcCb->tbInfo[0].tb != NULLP)
          {
-			   memset(macCb.macCell->macRaCb[0].msg4TxPdu, 0, macCb.macCell->macRaCb[0].msg4TbSize);
-			   macMuxPdu(&msg4DlData, &macCeData, macCb.macCell->macRaCb[0].msg4TxPdu,\
-			          macCb.macCell->macRaCb[0].msg4TbSize);
-            
-			}
-			else
-			{
-            DU_LOG("\nMAC: Failed allocating memory for msg4TxPdu");
-			}
-			/* Free memory allocated */
-         MAC_FREE(msg4DlData.pduInfo[0].dlPdu, macCb.macCell->macRaCb[0].msg4PduLen);
+            memset(hqProcCb->tbInfo[0].tb, 0, msg4TxPduLen);
+            macMuxPdu(&msg4DlData, &macCeData, hqProcCb->tbInfo[0].tb, msg4TxPduLen);
+         }
+         else
+         {
+            DU_LOG("\nERROR  -->  MAC: Failed allocating memory for msg4TxPdu");
+         }
+         /* Free memory allocated */
+         MAC_FREE(msg4DlData.pduInfo[msg4DlData.numPdu-1].dlPdu, macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4PduLen);
+         MAC_FREE(macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4Pdu, macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4PduLen);
+         macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4Pdu = NULLP;
+         macCb.macCell[cellIdx]->macRaCb[ueIdx].msg4PduLen = 0;
+         msg4DlData.numPdu--;
+
       }
    }
-      
+
    /* storing msg4 Pdu in macDlSlot */
-   if(macCb.macCell->macRaCb[0].msg4TxPdu)
+   if(hqProcCb->tbInfo[0].tb)
+   {
+      msg4SchInfo->dlMsgInfo.dlMsgPduLen = msg4TxPduLen;
+      MAC_ALLOC(msg4SchInfo->dlMsgInfo.dlMsgPdu, msg4SchInfo->dlMsgInfo.dlMsgPduLen);
+      if(msg4SchInfo->dlMsgInfo.dlMsgPdu != NULLP)
+      {
+         memcpy(msg4SchInfo->dlMsgInfo.dlMsgPdu, hqProcCb->tbInfo[0].tb, \
+               msg4SchInfo->dlMsgInfo.dlMsgPduLen);
+      }
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->  MAC: Failed at fillMsg4Pdu()");
+   }
+}
+
+/**
+ * @brief Builds and Send the Muxed Pdu to Lower MAC
+ *
+ * @details
+ *
+ *     Function : buildAndSendMuxPdu
+ * 
+ *      Build and Sends the Muxed Pdu to Lower MAC.
+ *           
+ *  @param[in]  SlotTimingInfo    *slotInd
+ *  @return  void
+ **/
+
+void buildAndSendMuxPdu(SlotTimingInfo currTimingInfo)
+{
+   uint8_t   ueIdx;
+   uint8_t   schInfoIdx;
+   uint16_t  cellIdx;
+   MacDlSlot *currDlSlot = NULLP;
+   SlotTimingInfo muxTimingInfo;
+   memset(&muxTimingInfo, 0, sizeof(SlotTimingInfo));
+
+   GET_CELL_IDX(currTimingInfo.cellId, cellIdx);
+
+   ADD_DELTA_TO_TIME(currTimingInfo, muxTimingInfo, PHY_DELTA_DL);
+   currDlSlot = &macCb.macCell[cellIdx]->dlSlot[muxTimingInfo.slot];
+
+   for(ueIdx=0; ueIdx<MAX_NUM_UE; ueIdx++)
    {
-      msg4Alloc->msg4Info.msg4PduLen = macCb.macCell->macRaCb[0].msg4TbSize;
-      MAC_ALLOC(msg4Alloc->msg4Info.msg4Pdu, msg4Alloc->msg4Info.msg4PduLen);
-     if(msg4Alloc->msg4Info.msg4Pdu != NULLP)
-     {
-	     memcpy(msg4Alloc->msg4Info.msg4Pdu, macCb.macCell->macRaCb[0].msg4TxPdu, \
-		  msg4Alloc->msg4Info.msg4PduLen);
-     }
-	}
-	else
-	{
-      DU_LOG("\nMAC: Failed at macMuxPdu()");
-	}
-   /* TODO: Free all allocated memory, after the usage */
-   /* MAC_FREE(macCb.macCell->macRaCb[0].msg4TxPdu, \
-     macCb.macCell->macRaCb[0].msg4TbSize); // TODO: To be freed after re-transmission is successful.
-      MAC_FREE(macCb.macCell->macRaCb[0].msg4Pdu, macCb.macCell->macRaCb[0].msg4PduLen); */
+      if(currDlSlot->dlInfo.dlMsgAlloc[ueIdx])
+      {
+         for(schInfoIdx=0; schInfoIdx<currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->numSchedInfo; schInfoIdx++)
+         {
+            if((currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo.isMsg4Pdu) &&
+                  ((currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].pduPres == PDSCH_PDU) ||
+                   (currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].pduPres == BOTH)))
+            {
+               fillMsg4Pdu(currTimingInfo.cellId, &currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx]);
+            }
+         }
+      }
+   }
 }
 
 /**
@@ -159,81 +376,147 @@ void BuildAndSendMsg4MuxPdu(Msg4Alloc *msg4Alloc)
  * 
  *      This API is invoked by MAC to send slot ind to scheduler.
  *           
- *  @param[in]  SlotIndInfo    *slotInd
- *  @return  S16
+ *  @param[in]  SlotTimingInfo    *slotInd
+ *  @return  
  *      -# ROK 
  *      -# RFAILED 
  **/
-int sendSlotIndMacToSch(SlotIndInfo *slotInd)
+int sendSlotIndMacToSch(SlotTimingInfo *slotInd)
 {
    /* fill Pst structure to send to lwr_mac to MAC */
    Pst pst;
 
-   fillMacToSchPst(&pst);
-   pst.event = EVENT_SLOT_IND_TO_SCH;
-
+   FILL_PST_MAC_TO_SCH(pst, EVENT_SLOT_IND_TO_SCH);
    return(*macSchSlotIndOpts[pst.selector])(&pst,slotInd);
 }
 
+/*******************************************************************
+ *
+ * @brief Send cell up indication to DU APP
+ *
+ * @details
+ *
+ *    Function : sendCellUpIndMacToDuApp
+ *
+ *    Functionality:
+ *       Send cell up indication to DU APP
+ *
+ * @params[in] Cell Up indication info 
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+int sendCellUpIndMacToDuApp(uint16_t cellId)
+{
+   Pst pst;
+   uint16_t ret;
+   OduCellId *oduCellId;
+
+   /*  Allocate sharable memory */
+   MAC_ALLOC_SHRABL_BUF(oduCellId, sizeof(OduCellId));
+   if(!oduCellId)
+   {
+      DU_LOG("\nERROR  -->  MAC : Memory allocation failed for cell up indication");
+      return RFAILED;
+   }
+   oduCellId->cellId = cellId;
+
+   /* Fill Pst */
+   FILL_PST_MAC_TO_DUAPP(pst, EVENT_MAC_CELL_UP_IND);
+
+   ret = MacDuAppCellUpInd(&pst, oduCellId);
+   if(ret != ROK)
+   {
+      DU_LOG("\nERROR  -->  MAC: Failed to send cell up indication to DU APP");
+      MAC_FREE_SHRABL_BUF(MAC_MEM_REGION, MAC_POOL, oduCellId, sizeof(OduCellId));
+   }
+
+   return ret;
+} /* sendCellUpIndMacToDuApp */
+
 /*******************************************************************
  *
  * @brief Send slot indication to DU APP
  *
  * @details
  *
- *    Function : sendSlotIndMacToDuApp
+ *    Function : sendSlotIndToDuApp
  *
  *    Functionality:
- *       Send slot indication to DU APP
+ *       Send cell up indication to DU APP
  *
- * @params[in] Slot indication info 
+ * @params[in] Cell Up indication info 
  * @return ROK     - success
  *         RFAILED - failure
  *
  * ****************************************************************/
-int sendSlotIndMacToDuApp(SlotIndInfo *slotInd)
+uint8_t sendSlotIndToDuApp(SlotTimingInfo *slotInd)
 {
    Pst pst;
    uint16_t ret;
-   SlotInfo  *slotInfo;
- 
+   SlotTimingInfo *slotIndInfo;
+
    /*  Allocate sharable memory */
-   MAC_ALLOC_SHRABL_BUF(slotInfo, sizeof(SlotInfo));
-   if(!slotInfo)
+   MAC_ALLOC_SHRABL_BUF(slotIndInfo, sizeof(SlotTimingInfo));
+   if(!slotIndInfo)
    {
-      DU_LOG("\nMAC : Slot Indication memory allocation failed");
+      DU_LOG("\nERROR  -->  MAC : Memory allocation failed for slot indication");
       return RFAILED;
-  }
- 
-  slotInfo->cellId = macCb.macCell->cellId;
-  slotInfo->sfn = slotInd->sfn;
-  slotInfo->slot = slotInd->slot;
- 
-  /* Fill Pst */
-  pst.selector  = ODU_SELECTOR_LWLC;
-  pst.srcEnt    = ENTRG;
-  pst.dstEnt    = ENTDUAPP;
-  pst.dstInst   = 0;
-  pst.srcInst   = macCb.macInst;
-  pst.dstProcId = rgCb[pst.srcInst].rgInit.procId;
-  pst.srcProcId = rgCb[pst.srcInst].rgInit.procId;
-  pst.region = MAC_MEM_REGION;
-  pst.pool = MAC_POOL;
-  pst.event = EVENT_MAC_SLOT_IND;
-  pst.route = 0;
-  pst.prior = 0;
-  pst.intfVer = 0;
- 
-  ret = MacDuAppSlotInd(&pst, slotInfo);
-  if(ret != ROK)
-  {
-     DU_LOG("\nMAC: Failed to send slot indication to DU APP");
-     MAC_FREE_SHRABL_BUF(MAC_MEM_REGION, MAC_POOL, slotInfo, sizeof(SlotInfo));
-  }
- 
-  return ret;
-} /* sendSlotIndMacToDuApp */
+   }
+   memcpy(slotIndInfo, slotInd,sizeof(SlotTimingInfo));
 
+   /* Fill Pst */
+   FILL_PST_MAC_TO_DUAPP(pst, EVENT_MAC_SLOT_IND);
+
+   ret = MacDuAppSlotInd(&pst, slotIndInfo);
+   if(ret != ROK)
+   {
+      DU_LOG("\nERROR  -->  MAC: Failed to send slot up indication to DU APP");
+      MAC_FREE_SHRABL_BUF(MAC_MEM_REGION, MAC_POOL, slotIndInfo, sizeof(SlotTimingInfo));
+   }
+
+   return ret;
+}
+/*******************************************************************
+ *
+ * @brief Process slot indication at MAC
+ *
+ * @details
+ *
+ *    Function : macProcSlotInd
+ *
+ *    Functionality: Process slot indication at MAC
+ *
+ * @params[in] Slot indication info
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+uint8_t macProcSlotInd(SlotTimingInfo slotInd)
+{
+   uint16_t  cellIdx = 0;
+
+   GET_CELL_IDX(slotInd.cellId, cellIdx);
+   
+   if(macCb.macCell[cellIdx] == NULLP)
+   {
+      DU_LOG("ERROR  --> MAC : macProcSlotInd(): CellId[%d] does not exist. Error occurred at SFN [%d] Slot [%d]",\
+      slotInd.cellId, slotInd.sfn, slotInd.slot);
+      return RFAILED;
+   }
+   /* Store current time info */
+   macCb.macCell[cellIdx]->currTime.cellId = slotInd.cellId;
+   macCb.macCell[cellIdx]->currTime.slot = slotInd.slot;
+   macCb.macCell[cellIdx]->currTime.sfn = slotInd.sfn;
+
+   /* Mux Pdu for Msg4 */
+   buildAndSendMuxPdu(slotInd);
+
+   /* Trigger for DL TTI REQ */
+   fillDlTtiReq(slotInd);
+
+   return ROK;
+}  /* macProcSlotInd */
 
 /**
  * @brief Transmission time interval indication from PHY.
@@ -246,54 +529,86 @@ int sendSlotIndMacToDuApp(SlotIndInfo *slotInd)
  *           
  *  @param[in]  Pst            *pst
  *  @param[in]  SuId           suId 
- *  @param[in]  SlotIndInfo    *slotInd
- *  @return  S16
+ *  @param[in]  SlotTimingInfo    *slotInd
+ *  @return  
  *      -# ROK 
  *      -# RFAILED 
  **/
-PUBLIC S16 fapiMacSlotInd 
-(
-Pst                 *pst, 
-SlotIndInfo         *slotInd
-)
+uint8_t fapiMacSlotInd(Pst *pst, SlotTimingInfo *slotInd)
 {
-   S16              ret;
-   VOLATILE U32     startTime=0;
-   Inst             inst;
+   uint8_t               ret = ROK;
+   uint16_t              cellIdx;
+   volatile uint32_t     startTime=0;
 
-   DU_LOG("\nMAC : Slot Indication received");
-   
-   inst = pst->dstInst;
+#ifdef ODU_SLOT_IND_DEBUG_LOG
+   DU_LOG("\nDEBUG  -->  MAC : Slot Indication received. [%d : %d]", slotInd->sfn, slotInd->slot);
+#endif
    /*starting Task*/
-   SStartTask(&startTime, PID_MAC_TTI_IND);
+   ODU_START_TASK(&startTime, PID_MAC_TTI_IND);
+   gSlotCount++;
+
+   if(gSlotCount == 1)
+   {
+	   GET_CELL_IDX(slotInd->cellId, cellIdx);
+	   macCb.macCell[cellIdx]->state = CELL_STATE_UP;
+   }
 
+/* When testing L2 with Intel-L1, any changes specific to 
+ * timer mode testing must be guarded under INTEL_TIMER_MODE*/
+#ifndef INTEL_TIMER_MODE
    /* send slot indication to scheduler */
    ret = sendSlotIndMacToSch(slotInd);
    if(ret != ROK)
    {
-      DU_LOG("\nMAC : Sending of slot ind msg from MAC to SCH failed");
-      RETVALUE(ret);
+      DU_LOG("\nERROR  -->  MAC : Sending of slot ind msg from MAC to SCH failed");
+      MAC_FREE_SHRABL_BUF(pst->region, pst->pool, slotInd, sizeof(SlotTimingInfo));
+      return ret;
    }
 
-   ret = macProcessSlotInd(inst,*slotInd);
+   ret = macProcSlotInd(*slotInd);
    if(ret != ROK)
    {
-      DU_LOG("\nMAC : macProcessSlotInd failed");
-      RETVALUE(ret);
+      DU_LOG("\nERROR  -->  MAC : macProcSlotInd failed");
+      MAC_FREE_SHRABL_BUF(pst->region, pst->pool, slotInd, sizeof(SlotTimingInfo));
+      return ret;
    }
+#endif
 
-   /* send slot indication to du app */
-   ret = sendSlotIndMacToDuApp(slotInd);
+   /*First Slot Ind is for CellUp. Any other Slot, will be notified to DUAPP as
+    * SLOT_IND*/
+   if(gSlotCount == 1)   
+   {
+      /* send cell up indication to du app */
+      ret = sendCellUpIndMacToDuApp(slotInd->cellId);
+
+   }
+   else
+   {
+      /* send slot indication to du app */
+      ret = sendSlotIndToDuApp(slotInd);
+   }
+   
    if(ret != ROK)
    {
-      DU_LOG("\nMAC :Sending of slot ind msg from MAC to DU APP failed");
-      RETVALUE(ret);
+      DU_LOG("\nERROR  -->  MAC :Sending of slot ind msg from MAC to DU APP failed");
+      MAC_FREE_SHRABL_BUF(pst->region, pst->pool, slotInd, sizeof(SlotTimingInfo));
+      return ret;
    }
 
    /*stoping Task*/
-   SStopTask(startTime, PID_MAC_TTI_IND);
+   ODU_STOP_TASK(startTime, PID_MAC_TTI_IND);
+   MAC_FREE_SHRABL_BUF(pst->region, pst->pool, slotInd, sizeof(SlotTimingInfo));
+
+#ifdef INTEL_WLS_MEM
+   lwrMacCb.phySlotIndCntr++;
+   if(lwrMacCb.phySlotIndCntr > WLS_MEM_FREE_PRD)
+   {
+      lwrMacCb.phySlotIndCntr = 1;
+   }
+   freeWlsBlockList(lwrMacCb.phySlotIndCntr - 1);
+#endif
 
-   RETVALUE(ret);
+   return ret;
 }  /* fapiMacSlotInd */
 
 /**********************************************************************