+
+/*******************************************************************
+ *
+ * @brief Handler to calculate TBS size for BSR requested
+ *
+ * @details
+ *
+ * Function : schCalculateUlTbs
+ *
+ * Functionality: Function will note the required TBS for each LCGIDX and use
+ * the Priority LCG List and RRM policy to allocate the TBS size
+ *
+ * @params [in] ueCb (Pointer to UE CB)
+ * [in] puschTime (Time slot where PUSCH will be sent)
+ * [in] symbLen (No of Symbols used for PUSCH transmission)
+ * [out] startPrb(Pointer to startPRB which will be calculated while
+ * finding the best Free Block)
+ * [out] totTBS(Pointer to total TBS size)
+ * [in] isRetx (to indicate retransmission)
+ * [in] hqP (UL Harq process pointer)
+ *
+ * @return uint8_t : ROK > Scheduling of UL grant is successful
+ * RFAILED > vice versa
+ *
+ * ****************************************************************/
+uint8_t schCalculateUlTbs(SchUeCb *ueCb, SlotTimingInfo puschTime, uint8_t symbLen,\
+ uint16_t *startPrb, uint32_t *totTBS, bool isRetx, SchUlHqProcCb *hqP)
+{
+ uint16_t mcsIdx = 0;
+ CmLListCp *lcLL = NULLP;
+ uint16_t lcgIdx = 0, lcId =0, maxFreePRB = 0;
+ uint16_t rsvdDedicatedPRB;
+ *startPrb = 0;
+ *totTBS = 0;
+
+ /* check for BSR */
+ for(lcgIdx=0; lcgIdx<MAX_NUM_LOGICAL_CHANNEL_GROUPS; lcgIdx++)
+ {
+ if(ueCb->bsrInfo[lcgIdx].dataVol == 0)
+ {
+ continue;
+ }
+
+ /*TODO: lcgIdx and LCID has been implemented as one to one mapping.
+ * Need to check the mapping to figure out the LCID and lcgIdx once L2
+ * spec specifies any logic*/
+ lcId = lcgIdx;
+ if(ueCb->ulInfo.ulLcCtxt[lcId].isDedicated)
+ {
+ lcLL = &(hqP->ulLcPrbEst.dedLcList);
+ rsvdDedicatedPRB = ueCb->ulInfo.ulLcCtxt[lcId].rsvdDedicatedPRB;
+ }
+ else
+ {
+ lcLL = &(hqP->ulLcPrbEst.defLcList);
+ }
+
+ /*[Step2]: Update the reqPRB and Payloadsize for this LC in the appropriate List*/
+ if(updateLcListReqPRB(lcLL, lcId, ueCb->bsrInfo[lcgIdx].dataVol) != ROK)
+ {
+ DU_LOG("\nERROR --> SCH: LcgId:%d updation failed",lcId);
+ return RFAILED;
+ }
+ }
+
+ if ((hqP->ulLcPrbEst.defLcList.count == 0) && (hqP->ulLcPrbEst.dedLcList.count == 0))
+ {
+ if( (ueCb->srRcvd) || (isRetx) )
+ {
+ *startPrb = MAX_NUM_RB;
+ *totTBS = schCalcTbSize(UL_GRANT_SIZE);
+ }
+ /*Returning true when NO Grant is there for UE as this is not scheduling
+ * error*/
+ return ROK;
+ }
+
+ maxFreePRB = searchLargestFreeBlock(ueCb->cellCb, puschTime, startPrb, DIR_UL);
+
+ /*[Step4]: Estimation of PRB and BO which can be allocated to each LC in
+ * the list based on RRM policy*/
+
+ /*Either this UE contains no reservedPRB pool fir dedicated S-NSSAI or
+ * Num of Free PRB available is not enough to reserve Dedicated PRBs*/
+ if(maxFreePRB != 0)
+ {
+ mcsIdx = ueCb->ueCfg.ulModInfo.mcsIndex;
+ if((hqP->ulLcPrbEst.dedLcList.count == 0) || ((maxFreePRB < rsvdDedicatedPRB)))
+ {
+ hqP->ulLcPrbEst.sharedNumPrb = maxFreePRB;
+ DU_LOG("\nDEBUG --> SCH : UL Only Default Slice is scheduled, sharedPRB Count:%d",\
+ hqP->ulLcPrbEst.sharedNumPrb);
+
+ /*PRB Alloc for Default LCs*/
+ prbAllocUsingRRMPolicy(&(hqP->ulLcPrbEst.defLcList), FALSE, mcsIdx, symbLen,\
+ &(hqP->ulLcPrbEst.sharedNumPrb), NULLP, NULLP,&(ueCb->srRcvd));
+ }
+ else
+ {
+ hqP->ulLcPrbEst.sharedNumPrb = maxFreePRB - rsvdDedicatedPRB;
+
+ /*PRB Alloc for Dedicated LCs*/
+ prbAllocUsingRRMPolicy(&(hqP->ulLcPrbEst.dedLcList), TRUE, mcsIdx, symbLen,\
+ &(hqP->ulLcPrbEst.sharedNumPrb), &(rsvdDedicatedPRB),\
+ NULLP,&(ueCb->srRcvd));
+
+ /*PRB Alloc for Default LCs*/
+ prbAllocUsingRRMPolicy(&(hqP->ulLcPrbEst.defLcList), FALSE, mcsIdx, symbLen, \
+ &(hqP->ulLcPrbEst.sharedNumPrb), &(rsvdDedicatedPRB),\
+ NULLP,&(ueCb->srRcvd));
+ }
+ }
+ /*[Step5]:Traverse each LCID in LcList to calculate the exact Scheduled Bytes
+ * using allocated BO per LC and Update dlMsgAlloc(BO report for MAC*/
+ if(hqP->ulLcPrbEst.dedLcList.count != 0)
+ updateGrantSizeForBoRpt(&(hqP->ulLcPrbEst.dedLcList), NULLP, ueCb->bsrInfo, totTBS);
+
+ updateGrantSizeForBoRpt(&(hqP->ulLcPrbEst.defLcList), NULLP, ueCb->bsrInfo, totTBS);
+
+ /*Below case will hit if NO LC(s) are allocated due to resource crunch*/
+ if (*totTBS == 0)
+ {
+ if(maxFreePRB == 0)
+ {
+ DU_LOG("\nERROR --> SCH : NO FREE PRB!!");
+ }
+ else
+ {
+ /*Schedule the LC for next slot*/
+ DU_LOG("\nDEBUG --> SCH : No LC has been scheduled");
+ }
+ return RFAILED;
+ }
+ return ROK;
+}
+
+/*******************************************************************
+ *
+ * @brief sch Process pending Sr or Bsr Req
+ *
+ * @details
+ *
+ * Function : schProcessSrOrBsrReq
+ *
+ * Functionality:
+ * sch Process pending Sr or Bsr Req
+ *
+ * @params[in] SchCellCb *cell, SlotTimingInfo currTime
+ * @params[in] uint8_t ueId, Bool isRetx, SchUlHqProcCb **hqP
+ * @return true - success
+ * false - failure
+ *
+ *******************************************************************/
+bool schProcessSrOrBsrReq(SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId, bool isRetx, SchUlHqProcCb **hqP)
+{
+ bool k2Found = FALSE, ret = RFAILED;
+ uint8_t startSymb = 0, symbLen = 0;
+ uint8_t k2TblIdx = 0, k2Index = 0, k2Val = 0;
+ uint16_t startPrb = 0;
+ uint32_t totDataReq = 0; /* in bytes */
+ SchUeCb *ueCb;
+ SchPuschInfo *puschInfo;
+ DciInfo *dciInfo = NULLP;
+ SchK2TimingInfoTbl *k2InfoTbl=NULLP;
+ SlotTimingInfo dciTime, puschTime;
+
+ if(cell == NULLP)
+ {
+ DU_LOG("\nERROR --> SCH: schProcessSrOrBsrReq() : Cell is NULL");
+ return false;
+ }
+
+ ueCb = &cell->ueCb[ueId-1];
+
+ if(ueCb == NULLP)
+ {
+ DU_LOG("\nERROR --> SCH: schProcessSrOrBsrReq() : UE is NULL");
+ return false;
+ }
+
+ if (isRetx == FALSE)
+ {
+ if (schUlGetAvlHqProcess(cell, ueCb, hqP) != ROK)
+ {
+ return RFAILED;
+ }
+ }
+
+ /* Calculating time frame to send DCI for SR */
+ ADD_DELTA_TO_TIME(currTime, dciTime, PHY_DELTA_DL + SCHED_DELTA);
+#ifdef NR_TDD
+ if(schGetSlotSymbFrmt(dciTime.slot, cell->slotFrmtBitMap) == DL_SLOT)
+#endif
+ {
+ if(ueCb->ueCfg.spCellCfg.servCellCfg.initUlBwp.k2TblPrsnt)
+ k2InfoTbl = &ueCb->ueCfg.spCellCfg.servCellCfg.initUlBwp.k2InfoTbl;
+ else
+ k2InfoTbl = &cell->cellCfg.schInitialUlBwp.k2InfoTbl;
+
+ for(k2TblIdx = 0; k2TblIdx < k2InfoTbl->k2TimingInfo[dciTime.slot].numK2; k2TblIdx++)
+ {
+ k2Index = k2InfoTbl->k2TimingInfo[dciTime.slot].k2Indexes[k2TblIdx];
+
+ if(!ueCb->ueCfg.spCellCfg.servCellCfg.initUlBwp.k2TblPrsnt)
+ {
+ k2Val = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].k2;
+ startSymb = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].startSymbol;
+ symbLen = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].symbolLength;
+ }
+ else
+ {
+ k2Val = ueCb->ueCfg.spCellCfg.servCellCfg.initUlBwp.puschCfg.timeDomRsrcAllocList[k2Index].k2;
+ startSymb = ueCb->ueCfg.spCellCfg.servCellCfg.initUlBwp.puschCfg.timeDomRsrcAllocList[k2Index].startSymbol;
+ symbLen = ueCb->ueCfg.spCellCfg.servCellCfg.initUlBwp.puschCfg.timeDomRsrcAllocList[k2Index].symbolLength;
+ }
+ /* Check for number of Symbol of PUSCH should be same as original in case of transmisson*/
+ /* Calculating time frame to send PUSCH for SR */
+ ADD_DELTA_TO_TIME(dciTime, puschTime, k2Val);
+#ifdef NR_TDD
+ if(schGetSlotSymbFrmt(puschTime.slot, cell->slotFrmtBitMap) == DL_SLOT)
+ continue;
+#endif
+ if(cell->schUlSlotInfo[puschTime.slot]->puschUe != 0)
+ {
+ continue;
+ }
+ k2Found = true;
+ break;
+ }
+ }
+
+ if(k2Found == true)
+ {
+ ret = schCalculateUlTbs(ueCb, puschTime, symbLen, &startPrb, &totDataReq, isRetx, *hqP);
+
+ if(totDataReq > 0 && ret == ROK)
+ {
+ SCH_ALLOC(dciInfo, sizeof(DciInfo));
+ if(!dciInfo)
+ {
+ DU_LOG("\nERROR --> SCH : Memory Allocation failed for dciInfo alloc");
+ if(isRetx != TRUE)
+ {
+ if((*hqP)->ulLcPrbEst.dedLcList.count != 0)
+ updateBsrAndLcList(&((*hqP)->ulLcPrbEst.dedLcList), ueCb->bsrInfo, RFAILED);
+
+ updateBsrAndLcList(&((*hqP)->ulLcPrbEst.defLcList), ueCb->bsrInfo, RFAILED);
+ }
+ return false;
+ }
+ cell->schDlSlotInfo[dciTime.slot]->ulGrant = dciInfo;
+ memset(dciInfo,0,sizeof(DciInfo));
+
+ /* Update PUSCH allocation */
+ if(schFillPuschAlloc(ueCb, puschTime, totDataReq, startSymb, symbLen, startPrb, isRetx, *hqP) == ROK)
+ {
+ if(cell->schUlSlotInfo[puschTime.slot]->schPuschInfo)
+ {
+ puschInfo = cell->schUlSlotInfo[puschTime.slot]->schPuschInfo;
+ if(puschInfo != NULLP)
+ {
+ /* Fill DCI for UL grant */
+ schFillUlDci(ueCb, puschInfo, dciInfo, isRetx, *hqP);
+ memcpy(&dciInfo->slotIndInfo, &dciTime, sizeof(SlotTimingInfo));
+ ueCb->srRcvd = false;
+ ueCb->bsrRcvd = false;
+ cell->schUlSlotInfo[puschTime.slot]->puschUe = ueId;
+ if((*hqP)->ulLcPrbEst.dedLcList.count != 0)
+ updateBsrAndLcList(&((*hqP)->ulLcPrbEst.dedLcList), ueCb->bsrInfo, ROK);
+ updateBsrAndLcList(&((*hqP)->ulLcPrbEst.defLcList), ueCb->bsrInfo, ROK);
+ cmLListAdd2Tail(&(ueCb->hqUlmap[puschTime.slot]->hqList), &(*hqP)->ulSlotLnk);
+ return true;
+ }
+ }
+ }
+ if((*hqP)->ulLcPrbEst.dedLcList.count != 0)
+ updateBsrAndLcList(&((*hqP)->ulLcPrbEst.dedLcList), ueCb->bsrInfo, RFAILED);
+ updateBsrAndLcList(&((*hqP)->ulLcPrbEst.defLcList), ueCb->bsrInfo, RFAILED);
+ }
+ }
+ return (ret);
+}
+
+
+/*******************************************************************
+ *
+ * @brief sch Process pending Sr or Bsr Req
+ *
+ * @details
+ *
+ * Function : updateBsrAndLcList
+ *
+ * Functionality:
+ * Updating the BSRInfo in UECB and Lclist
+ *
+ * @params[in] SchCellCb *cell, SlotTimingInfo currTime
+ * @return ROK - success
+ * RFAILED - failure
+ *
+ *******************************************************************/
+void updateBsrAndLcList(CmLListCp *lcLL, BsrInfo *bsrInfo, uint8_t status)
+{
+ CmLList *node = NULLP, *next = NULLP;
+ LcInfo *lcNode = NULLP;
+
+ if(lcLL == NULLP)
+ {
+ DU_LOG("\nERROR --> SCH: LcList not present");
+ return;
+ }
+
+ if(lcLL->count)
+ {
+ node = lcLL->first;
+ }
+ else
+ {
+ /*lcLL is empty*/
+ return;
+ }
+
+ while(node)
+ {
+ next = node->next;
+ lcNode = (LcInfo *)node->node;
+ if(lcNode != NULLP)
+ {
+ /*Only when Status is OK then allocation is marked as ZERO and reqBO
+ * is updated in UE's DB. If Failure, then allocation is added to reqBO
+ * and same is updated in Ue's DB inside BSR Info structure*/
+ if(status == ROK)
+ {
+ lcNode->allocBO = 0;
+ }
+
+ lcNode->reqBO += lcNode->allocBO;
+ bsrInfo[lcNode->lcId].dataVol = lcNode->reqBO;
+ if(lcNode->reqBO == 0)
+ {
+ handleLcLList(lcLL, lcNode->lcId, DELETE);
+ }
+ }
+ node = next;
+ }
+}
+
+/********************************************************************************
+ *
+ * @brief Increment the Slot by a input factor
+ *
+ * @details
+ *
+ * Function : schIncrSlot
+ *
+ * Functionality:
+ * Increment the slot by a input factor till num of Slots configured in a
+ * Radio Frame. If it exceeds, move to next sfn.
+ *
+ * @params[in/out] SlotTimingInfo timingInfo
+ * [in] uint8_t incr [Increment factor]
+ * [in] numSlotsPerRF [Number of Slots configured per RF as per
+ * numerology]
+ * @return ROK - success
+ * RFAILED - failure
+ *
+ *******************************************************************/
+void schIncrSlot(SlotTimingInfo *timingInfo, uint8_t incr, uint16_t numSlotsPerRF)
+{
+ timingInfo->slot += incr;
+ if(timingInfo->slot >= numSlotsPerRF)
+ {
+ timingInfo->sfn += timingInfo->slot/numSlotsPerRF;
+ timingInfo->slot %= numSlotsPerRF;
+ if(timingInfo->sfn > MAX_SFN)
+ {
+ timingInfo->sfn %= MAX_SFN;
+ }
+ }
+}
+
+/*******************************************************************
+*
+* @brief Fill PDSCH info in Page Alloc
+*
+* @details
+*
+* Function : schFillPagePdschCfg
+*
+* Functionality: Fill PDSCH info in Page Alloc
+*
+* @params[in] SchCellCb *cell, PdschCfg *pagePdschCfg, SlotTimingInfo slotTime,
+* uint16_t tbsSize, uint8_t mcs, uint16_t startPrb
+*
+* @return pointer to return Value(ROK, RFAILED)
+*
+* ****************************************************************/
+uint8_t schFillPagePdschCfg(SchCellCb *cell, PdschCfg *pagePdschCfg, SlotTimingInfo slotTime, uint16_t tbSize, uint8_t mcs, uint16_t startPrb)
+{
+ uint8_t cwCount = 0;
+ uint8_t dmrsStartSymbol, startSymbol, numSymbol;
+
+ /* fill the PDSCH PDU */
+
+ pagePdschCfg->pduBitmap = 0; /* PTRS and CBG params are excluded */
+ pagePdschCfg->rnti = P_RNTI; /* SI-RNTI */
+ pagePdschCfg->pduIndex = 0;
+ pagePdschCfg->numCodewords = 1;
+ for(cwCount = 0; cwCount < pagePdschCfg->numCodewords; cwCount++)
+ {
+ pagePdschCfg->codeword[cwCount].targetCodeRate = 308;
+ pagePdschCfg->codeword[cwCount].qamModOrder = 2;
+ pagePdschCfg->codeword[cwCount].mcsIndex = mcs;
+ pagePdschCfg->codeword[cwCount].mcsTable = 0; /* notqam256 */
+ pagePdschCfg->codeword[cwCount].rvIndex = 0;
+ tbSize = tbSize + TX_PAYLOAD_HDR_LEN;
+ pagePdschCfg->codeword[cwCount].tbSize = tbSize;
+ }
+ pagePdschCfg->dataScramblingId = cell->cellCfg.phyCellId;
+ pagePdschCfg->numLayers = 1;
+ pagePdschCfg->transmissionScheme = 0;
+ pagePdschCfg->refPoint = 0;
+ pagePdschCfg->dmrs.dlDmrsSymbPos = 4; /* Bitmap value 00000000000100 i.e. using 3rd symbol for PDSCH DMRS */
+ pagePdschCfg->dmrs.dmrsConfigType = 0; /* type-1 */
+ pagePdschCfg->dmrs.dlDmrsScramblingId = cell->cellCfg.phyCellId;
+ pagePdschCfg->dmrs.scid = 0;
+ pagePdschCfg->dmrs.numDmrsCdmGrpsNoData = 1;
+ pagePdschCfg->dmrs.dmrsPorts = 0x0001;
+ pagePdschCfg->dmrs.mappingType = DMRS_MAP_TYPE_A; /* Type-A */
+ pagePdschCfg->dmrs.nrOfDmrsSymbols = NUM_DMRS_SYMBOLS;
+ pagePdschCfg->dmrs.dmrsAddPos = DMRS_ADDITIONAL_POS;
+
+ pagePdschCfg->pdschFreqAlloc.resourceAllocType = 1; /* RAT type-1 RIV format */
+ /* the RB numbering starts from coreset0, and PDSCH is always above SSB */
+ pagePdschCfg->pdschFreqAlloc.freqAlloc.startPrb = startPrb;
+ pagePdschCfg->pdschFreqAlloc.freqAlloc.numPrb = schCalcNumPrb(tbSize, mcs, NUM_PDSCH_SYMBOL);
+ pagePdschCfg->pdschFreqAlloc.vrbPrbMapping = 0; /* non-interleaved */
+ pagePdschCfg->pdschTimeAlloc.rowIndex = 1;
+ /* This is Intel's requirement. PDSCH should start after PDSCH DRMS symbol */
+ pagePdschCfg->pdschTimeAlloc.timeAlloc.startSymb = 3; /* spec-38.214, Table 5.1.2.1-1 */
+ pagePdschCfg->pdschTimeAlloc.timeAlloc.numSymb = NUM_PDSCH_SYMBOL;
+
+ /* Find total symbols occupied including DMRS */
+ dmrsStartSymbol = findDmrsStartSymbol(pagePdschCfg->dmrs.dlDmrsSymbPos);
+ /* If there are no DRMS symbols, findDmrsStartSymbol() returns MAX_SYMB_PER_SLOT,
+ * in that case only PDSCH symbols are marked as occupied */
+ if(dmrsStartSymbol == MAX_SYMB_PER_SLOT)
+ {
+ startSymbol = pagePdschCfg->pdschTimeAlloc.timeAlloc.startSymb;
+ numSymbol = pagePdschCfg->pdschTimeAlloc.timeAlloc.numSymb;
+ }
+ /* If DMRS symbol is found, mark DMRS and PDSCH symbols as occupied */
+ else
+ {
+ startSymbol = dmrsStartSymbol;
+ numSymbol = pagePdschCfg->dmrs.nrOfDmrsSymbols + pagePdschCfg->pdschTimeAlloc.timeAlloc.numSymb;
+ }
+
+ /* Allocate the number of PRBs required for DL PDSCH */
+ if((allocatePrbDl(cell, slotTime, startSymbol, numSymbol,\
+ &pagePdschCfg->pdschFreqAlloc.freqAlloc.startPrb, pagePdschCfg->pdschFreqAlloc.freqAlloc.numPrb)) != ROK)
+ {
+ DU_LOG("\nERROR --> SCH : allocatePrbDl() failed for DL MSG");
+ return RFAILED;
+ }
+
+ pagePdschCfg->beamPdschInfo.numPrgs = 1;
+ pagePdschCfg->beamPdschInfo.prgSize = 1;
+ pagePdschCfg->beamPdschInfo.digBfInterfaces = 0;
+ pagePdschCfg->beamPdschInfo.prg[0].pmIdx = 0;
+ pagePdschCfg->beamPdschInfo.prg[0].beamIdx[0] = 0;
+ pagePdschCfg->txPdschPower.powerControlOffset = 0;
+ pagePdschCfg->txPdschPower.powerControlOffsetSS = 0;
+
+ return ROK;
+}
+