+#ifdef INTEL_FAPI
+/*******************************************************************
+ *
+ * @brief fills bsr Ul DCI PDU required for UL DCI Request to PHY
+ *
+ * @details
+ *
+ * Function : fillUlDciPdu
+ *
+ * Functionality:
+ * -Fills the Ul DCI PDU, spec Ref:38.212, Table 7.3.1-1
+ *
+ * @params[in] Pointer to fapi_dl_dci_t
+ * Pointer to DciInfo
+ * @return ROK
+ *
+ ******************************************************************/
+void fillUlDciPdu(fapi_dl_dci_t *ulDciPtr, DciInfo *schDciInfo)
+{
+ if(ulDciPtr != NULLP)
+ {
+ uint8_t numBytes;
+ uint8_t bytePos;
+ uint8_t bitPos;
+
+ uint8_t coreset1Size = 0;
+ uint16_t rbStart = 0;
+ uint16_t rbLen = 0;
+ uint8_t dciFormatId = 0;
+ uint32_t freqDomResAssign;
+ uint8_t timeDomResAssign;
+ uint8_t freqHopFlag;
+ uint8_t modNCodScheme;
+ uint8_t ndi;
+ uint8_t redundancyVer = 0;
+ uint8_t harqProcessNum = 0;
+ uint8_t puschTpc = 0;
+ uint8_t ul_SlInd = 0;
+
+ /* Size(in bits) of each field in DCI format 0_0 */
+ uint8_t dciFormatIdSize = 1;
+ uint8_t freqDomResAssignSize = 0;
+ uint8_t timeDomResAssignSize = 4;
+ uint8_t freqHopFlagSize = 1;
+ uint8_t modNCodSchemeSize = 5;
+ uint8_t ndiSize = 1;
+ uint8_t redundancyVerSize = 2;
+ uint8_t harqProcessNumSize = 4;
+ uint8_t puschTpcSize = 2;
+ uint8_t ul_SlIndSize = 1;
+
+ ulDciPtr->rnti = schDciInfo->dciInfo.rnti;
+ ulDciPtr->scramblingId = schDciInfo->dciInfo.scramblingId;
+ ulDciPtr->scramblingRnti = schDciInfo->dciInfo.scramblingRnti;
+ ulDciPtr->cceIndex = schDciInfo->dciInfo.cceIndex;
+ ulDciPtr->aggregationLevel = schDciInfo->dciInfo.aggregLevel;
+ ulDciPtr->pc_and_bform.numPrgs = schDciInfo->dciInfo.beamPdcchInfo.numPrgs;
+ ulDciPtr->pc_and_bform.prgSize = schDciInfo->dciInfo.beamPdcchInfo.prgSize;
+ ulDciPtr->pc_and_bform.digBfInterfaces = schDciInfo->dciInfo.beamPdcchInfo.digBfInterfaces;
+ ulDciPtr->pc_and_bform.pmi_bfi[0].pmIdx = schDciInfo->dciInfo.beamPdcchInfo.prg[0].pmIdx;
+ ulDciPtr->pc_and_bform.pmi_bfi[0].beamIdx[0].beamidx = schDciInfo->dciInfo.beamPdcchInfo.prg[0].beamIdx[0];
+ ulDciPtr->beta_pdcch_1_0 = schDciInfo->dciInfo.txPdcchPower.powerValue;
+ ulDciPtr->powerControlOfssetSS = schDciInfo->dciInfo.txPdcchPower.powerControlOffsetSS;
+
+ /* Calculating freq domain resource allocation field value and size
+ * coreset1Size = Size of coreset 1
+ * RBStart = Starting Virtual Rsource block
+ * RBLen = length of contiguously allocted RBs
+ * Spec 38.214 Sec 5.1.2.2.2
+ */
+ if(schDciInfo->formatType == FORMAT0_0)
+ {
+ coreset1Size = schDciInfo->coresetCfg.coreSetSize;
+ rbLen = schDciInfo->format.format0_0.freqAlloc.numPrb;
+ rbStart = schDciInfo->format.format0_0.freqAlloc.startPrb;
+
+ if((rbLen >=1) && (rbLen <= coreset1Size - rbStart))
+ {
+ if((rbLen - 1) <= floor(coreset1Size / 2))
+ freqDomResAssign = (coreset1Size * (rbLen-1)) + rbStart;
+ else
+ freqDomResAssign = (coreset1Size * (coreset1Size - rbLen + 1)) \
+ + (coreset1Size - 1 - rbStart);
+
+ freqDomResAssignSize = ceil(log2(coreset1Size * (coreset1Size + 1) / 2));
+ }
+ /* Fetching DCI field values */
+ dciFormatId = schDciInfo->formatType; /* DCI indentifier for UL DCI */
+ timeDomResAssign = schDciInfo->format.format0_0.rowIndex;
+ freqHopFlag = schDciInfo->format.format0_0.freqHopFlag;
+ modNCodScheme = schDciInfo->format.format0_0.mcs;
+ ndi = schDciInfo->format.format0_0.ndi;
+ redundancyVer = schDciInfo->format.format0_0.rv;
+ harqProcessNum = schDciInfo->format.format0_0.harqProcId;
+ puschTpc = schDciInfo->format.format0_0.tpcCmd;
+ ul_SlInd = schDciInfo->format.format0_0.sUlCfgd;
+
+ /* Reversing bits in each DCI field */
+ dciFormatId = reverseBits(dciFormatId, dciFormatIdSize);
+ freqDomResAssign = reverseBits(freqDomResAssign, freqDomResAssignSize);
+ timeDomResAssign = reverseBits(timeDomResAssign, timeDomResAssignSize);
+ modNCodScheme = reverseBits(modNCodScheme, modNCodSchemeSize);
+ redundancyVer = reverseBits(redundancyVer, redundancyVerSize);
+ harqProcessNum = reverseBits(harqProcessNum, harqProcessNumSize);
+ puschTpc = reverseBits(puschTpc, puschTpcSize);
+ ul_SlInd = reverseBits(ul_SlInd, ul_SlIndSize);
+ }
+ /* Calulating total number of bytes in buffer */
+ ulDciPtr->payloadSizeBits = (dciFormatIdSize + freqDomResAssignSize\
+ + timeDomResAssignSize + freqHopFlagSize + modNCodSchemeSize + ndi \
+ + redundancyVerSize + harqProcessNumSize + puschTpcSize + ul_SlIndSize);
+
+ numBytes = ulDciPtr->payloadSizeBits / 8;
+ if(ulDciPtr->payloadSizeBits % 8)
+ numBytes += 1;
+
+ if(numBytes > FAPI_DCI_PAYLOAD_BYTE_LEN)
+ {
+ DU_LOG("\nLWR_MAC : Total bytes for DCI is more than expected");
+ return;
+ }
+
+ /* Initialize buffer */
+ for(bytePos = 0; bytePos < numBytes; bytePos++)
+ ulDciPtr->payload[bytePos] = 0;
+
+ bytePos = numBytes - 1;
+ bitPos = 0;
+
+ /* Packing DCI format fields */
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ dciFormatId, dciFormatIdSize);
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ freqDomResAssign, freqDomResAssignSize);
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ timeDomResAssign, timeDomResAssignSize);
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ freqHopFlag, freqHopFlagSize);
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ modNCodScheme, modNCodSchemeSize);
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ ndi, ndiSize);
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ redundancyVer, redundancyVerSize);
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ harqProcessNum, harqProcessNumSize);
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ puschTpc, puschTpcSize);
+ fillDlDciPayload(ulDciPtr->payload, &bytePos, &bitPos,\
+ ul_SlInd, ul_SlIndSize);
+ }
+} /* fillUlDciPdu */
+
+/*******************************************************************
+ *
+ * @brief fills PDCCH PDU required for UL DCI REQ to PHY
+ *
+ * @details
+ *
+ * Function : fillUlDciPdcchPdu
+ *
+ * Functionality:
+ * -Fills the Pdcch PDU info
+ *
+ * @params[in] Pointer to FAPI DL TTI Req
+ * Pointer to PdcchCfg
+ * @return ROK
+ *
+ ******************************************************************/
+uint8_t fillUlDciPdcchPdu(fapi_dci_pdu_t *ulDciReqPdu, DlSchedInfo *dlInfo, uint8_t coreSetType)
+{
+ if(ulDciReqPdu != NULLP)
+ {
+ memset(&ulDciReqPdu->pdcchPduConfig, 0, sizeof(fapi_dl_pdcch_pdu_t));
+ fillUlDciPdu(ulDciReqPdu->pdcchPduConfig.dlDci, dlInfo->ulGrant);
+ ulDciReqPdu->pduType = PDCCH_PDU_TYPE;
+ ulDciReqPdu->pdcchPduConfig.bwpSize = dlInfo->ulGrant->bwpCfg.freqAlloc.numPrb;
+ ulDciReqPdu->pdcchPduConfig.bwpStart = dlInfo->ulGrant->bwpCfg.freqAlloc.startPrb;
+ ulDciReqPdu->pdcchPduConfig.subCarrierSpacing = dlInfo->ulGrant->bwpCfg.subcarrierSpacing;
+ ulDciReqPdu->pdcchPduConfig.cyclicPrefix = dlInfo->ulGrant->bwpCfg.cyclicPrefix;
+ ulDciReqPdu->pdcchPduConfig.startSymbolIndex = dlInfo->ulGrant->coresetCfg.startSymbolIndex;
+ ulDciReqPdu->pdcchPduConfig.durationSymbols = dlInfo->ulGrant->coresetCfg.durationSymbols;
+ memcpy(ulDciReqPdu->pdcchPduConfig.freqDomainResource, dlInfo->ulGrant->coresetCfg.freqDomainResource, 6);
+ ulDciReqPdu->pdcchPduConfig.cceRegMappingType = dlInfo->ulGrant->coresetCfg.cceRegMappingType;
+ ulDciReqPdu->pdcchPduConfig.regBundleSize = dlInfo->ulGrant->coresetCfg.regBundleSize;
+ ulDciReqPdu->pdcchPduConfig.interleaverSize = dlInfo->ulGrant->coresetCfg.interleaverSize;
+ ulDciReqPdu->pdcchPduConfig.coreSetSize = dlInfo->ulGrant->coresetCfg.coreSetType;
+ ulDciReqPdu->pdcchPduConfig.shiftIndex = dlInfo->ulGrant->coresetCfg.shiftIndex;
+ ulDciReqPdu->pdcchPduConfig.precoderGranularity = dlInfo->ulGrant->coresetCfg.precoderGranularity;
+ ulDciReqPdu->pdcchPduConfig.numDlDci = 1;
+ ulDciReqPdu->pdcchPduConfig.coreSetType = coreSetType;
+
+ /* Calculating PDU length. Considering only one Ul dci pdu for now */
+ ulDciReqPdu->pduSize = sizeof(fapi_dl_pdcch_pdu_t);
+ }
+ return ROK;
+}
+#endif
+/*******************************************************************
+ *
+ * @brief Sends UL DCI Request to PHY
+ *
+ * @details
+ *
+ * Function : fillUlDciReq
+ *
+ * Functionality:
+ * -Sends FAPI Ul Dci req to PHY
+ *
+ * @params[in] Pointer to CmLteTimingInfo
+ * @return ROK - success
+ * RFAILED - failure
+ *
+ ******************************************************************/
+uint16_t fillUlDciReq(SlotIndInfo currTimingInfo)
+{
+#ifdef INTEL_FAPI
+ uint8_t cellIdx;
+ uint8_t numPduEncoded = 0;
+ uint32_t msgLen = 0;
+ uint32_t msgSize = 0;
+
+ fapi_ul_dci_req_t *ulDciReq = NULLP;
+ SlotIndInfo ulDciReqTimingInfo;
+
+ MacDlSlot *currDlSlot = NULLP;
+
+ if(lwrMacCb.phyState == PHY_STATE_RUNNING)
+ {
+ GET_CELL_IDX(currTimingInfo.cellId, cellIdx);
+ memcpy(&ulDciReqTimingInfo, &currTimingInfo, sizeof(SlotIndInfo));
+ currDlSlot = &macCb.macCell[cellIdx]->dlSlot[ulDciReqTimingInfo.slot % MAX_SLOT_SUPPORTED];
+
+ if(currDlSlot->dlInfo.ulGrant != NULLP)
+ {
+ msgSize = sizeof(fapi_ul_dci_req_t);
+ LWR_MAC_ALLOC(ulDciReq, msgSize);
+ if(ulDciReq != NULLP)
+ {
+ memset(ulDciReq, 0, msgSize);
+ ulDciReq->sfn = ulDciReqTimingInfo.sfn;
+ ulDciReq->slot = ulDciReqTimingInfo.slot;
+ ulDciReq->numPdus = 1; // No. of PDCCH PDUs
+ if(ulDciReq->numPdus > 0)
+ {
+ /* Fill PDCCH configuration Pdu */
+ fillUlDciPdcchPdu(&ulDciReq->pdus[numPduEncoded], &currDlSlot->dlInfo, CORESET_TYPE1);
+ numPduEncoded++;
+ /* free UL GRANT at SCH */
+ MAC_FREE(currDlSlot->dlInfo.ulGrant, sizeof(DciInfo));
+ currDlSlot->dlInfo.ulGrant = NULLP;
+ /* send UL DCI to PHY */
+ msgLen = sizeof(fapi_ul_dci_req_t) - sizeof(fapi_msg_t);
+ fillMsgHeader(&ulDciReq->header, FAPI_UL_DCI_REQUEST, msgLen);
+ LwrMacSendToPhy(ulDciReq->header.msg_id, sizeof(fapi_ul_dci_req_t), (void *)ulDciReq);
+ }
+
+ }
+ else
+ {
+ DU_LOG("\nLWR_MAC: Failed to allocate memory for UL DCI Request");
+ memset(currDlSlot, 0, sizeof(MacDlSlot));
+ return RFAILED;
+ }
+ }
+ }
+ else
+ {
+ lwr_mac_procInvalidEvt(&currTimingInfo);
+ }
+#endif
+ return ROK;
+}
+