fapi_nr_l1.c 11.1 KB
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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

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/*! \file fapi_nr_l1.c
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 * \brief functions for FAPI L1 interface
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 * \author R. Knopp, WEI-TAI CHEN
 * \date 2017, 2018
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 * \version 0.1
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 * \company Eurecom, NTUST
 * \email: knopp@eurecom.fr, kroempa@gmail.com
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 * \note
 * \warning
 */
#include "fapi_nr_l1.h"
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#include "PHY/NR_TRANSPORT/nr_transport_proto.h"
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#include "PHY/NR_TRANSPORT/nr_dlsch.h"
#include "PHY/NR_TRANSPORT/nr_dci.h"
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#include "nfapi/oai_integration/vendor_ext.h"
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extern int oai_nfapi_dl_tti_req(nfapi_nr_dl_tti_request_t *dl_config_req);
extern int oai_nfapi_tx_data_req(nfapi_nr_tx_data_request_t *tx_data_req);
extern int oai_nfapi_ul_dci_req(nfapi_nr_ul_dci_request_t *ul_dci_req);
extern int oai_nfapi_ul_tti_req(nfapi_nr_ul_tti_request_t *ul_tti_req);
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extern uint8_t nfapi_mode;

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void handle_nr_nfapi_ssb_pdu(PHY_VARS_gNB *gNB,int frame,int slot,
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                             nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdu)
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{

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  AssertFatal(dl_tti_pdu->ssb_pdu.ssb_pdu_rel15.bchPayloadFlag== 1, "bchPayloadFlat %d != 1\n",
              dl_tti_pdu->ssb_pdu.ssb_pdu_rel15.bchPayloadFlag);
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  uint8_t i_ssb = dl_tti_pdu->ssb_pdu.ssb_pdu_rel15.SsbBlockIndex;

  LOG_D(PHY,"%d.%d : ssb index %d pbch_pdu: %x\n",frame,slot,i_ssb,dl_tti_pdu->ssb_pdu.ssb_pdu_rel15.bchPayload);
  if (gNB->ssb[i_ssb].active)
    AssertFatal(1==0,"SSB PDU with index %d already active\n",i_ssb);
  else {
    gNB->ssb[i_ssb].active = true;
    memcpy((void*)&gNB->ssb[i_ssb].ssb_pdu,&dl_tti_pdu->ssb_pdu,sizeof(dl_tti_pdu->ssb_pdu));
  }
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}

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/*void handle_nr_nfapi_pdsch_pdu(PHY_VARS_gNB *gNB,int frame,int subframe,gNB_L1_rxtx_proc_t *proc,
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                            uint8_t codeword_index,
                            uint8_t *sdu)
{

	int UE_id = 0; //Hardcode UE_id for now
	int harq_pid;

	NR_gNB_DLSCH_t *dlsch0=NULL, *dlsch1=NULL;
	NR_DL_gNB_HARQ_t *dlsch0_harq=NULL,*dlsch1_harq=NULL;

    // Based on nr_fill_dci_and_dlsch only gNB->dlsch[0][0] gets filled now. So maybe we do not need dlsch1.
	dlsch0 = gNB->dlsch[UE_id][0];
	dlsch1 = gNB->dlsch[UE_id][1];

	harq_pid        = dlsch0->harq_ids[subframe];
	dlsch0_harq     = dlsch0->harq_processes[harq_pid];
	dlsch1_harq     = dlsch1->harq_processes[harq_pid];


	//if (dlsch0_harq->round==0) {  //get pointer to SDU if this a new SDU
    if(sdu == NULL) {
      LOG_E(PHY,"NFAPI: SFN/SF:%04d%d proc:TX:[frame %d subframe %d]: programming dlsch for round 0 \n",
            frame,subframe,
            proc->frame_tx,proc->slot_tx);
      return;
    }
    //AssertFatal(sdu!=NULL,"NFAPI: SFN/SF:%04d%d proc:TX:[frame %d subframe %d]: programming dlsch for round 0, rnti %x, UE_id %d, harq_pid %d : sdu is null for pdu_index %d dlsch0_harq[round:%d SFN/SF:%d%d pdu:%p mcs:%d ndi:%d pdschstart:%d]\n",
    //            frame,subframe,
    //            proc->frame_tx,proc->subframe_tx,rel8->rnti,UE_id,harq_pid,
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    //            dl_tti_pdu->pdsch_pdu.pdsch_pdu_rel8.pdu_index,dlsch0_harq->round,dlsch0_harq->frame,dlsch0_harq->subframe,dlsch0_harq->pdu,dlsch0_harq->mcs,dlsch0_harq->ndi,dlsch0_harq->pdsch_start);
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    if (codeword_index == 0) dlsch0_harq->pdu                    = sdu;
    else                     dlsch1_harq->pdu                    = sdu;
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    LOG_I(PHY, "SFN/SF: %d/%d DLSCH PDU filled \n",frame, subframe);
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//  }

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}*/
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void handle_nfapi_nr_pdcch_pdu(PHY_VARS_gNB *gNB,
			       int frame, int slot,
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			       nfapi_nr_dl_tti_pdcch_pdu *pdcch_pdu) {
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  if(pdcch_pdu->pdcch_pdu_rel15.CoreSetType==1)
    LOG_I(PHY,"Frame %d, Slot %d: DCI processing - proc:slot_tx:%d pdcch_pdu_rel15->numDlDci:%d\n",frame,slot, slot, pdcch_pdu->pdcch_pdu_rel15.numDlDci);
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  // copy dci configuration into gNB structure
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  //  gNB->pdcch_pdu = pdcch_pdu;
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  nr_fill_dci(gNB,frame,slot,pdcch_pdu);
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}

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void handle_nfapi_nr_ul_dci_pdu(PHY_VARS_gNB *gNB,
			       int frame, int slot,
			       nfapi_nr_ul_dci_request_pdus_t *ul_dci_request_pdu) {

  LOG_D(PHY,"Frame %d, Slot %d: UL DCI processing - proc:slot_tx:%d pdcch_pdu_rel15->numDlDci:%d\n",frame,slot, slot, ul_dci_request_pdu->pdcch_pdu.pdcch_pdu_rel15.numDlDci);

  // copy dci configuration into gNB structure
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  //  gNB->ul_dci_pdu = ul_dci_request_pdu;
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  nr_fill_ul_dci(gNB,frame,slot,ul_dci_request_pdu);
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}
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void handle_nfapi_nr_csirs_pdu(PHY_VARS_gNB *gNB,
			       int frame, int slot,
			       nfapi_nr_dl_tti_csi_rs_pdu *csirs_pdu) {

  int found = 0;

  for (int id=0; id<NUMBER_OF_NR_CSIRS_MAX; id++) {
    NR_gNB_CSIRS_t *csirs = &gNB->csirs_pdu[id];
    if (csirs->active == 0) {
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      LOG_D(PHY,"Frame %d Slot %d CSI_RS with ID %d is now active\n",frame,slot,id);
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      csirs->frame = frame;
      csirs->slot = slot;
      csirs->active = 1;
      memcpy((void*)&csirs->csirs_pdu, (void*)csirs_pdu, sizeof(nfapi_nr_dl_tti_csi_rs_pdu));
      found = 1;
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      break;
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    }
  }
  if (found == 0)
    LOG_E(MAC,"CSI-RS list is full\n");
}


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void handle_nr_nfapi_pdsch_pdu(PHY_VARS_gNB *gNB,int frame,int slot,
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                            nfapi_nr_dl_tti_pdsch_pdu *pdsch_pdu,
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                            uint8_t *sdu)
{


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  nr_fill_dlsch(gNB,frame,slot,pdsch_pdu,sdu);
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}

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void nr_schedule_response(NR_Sched_Rsp_t *Sched_INFO){
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  PHY_VARS_gNB *gNB;
  // copy data from L2 interface into L1 structures
  module_id_t                   Mod_id       = Sched_INFO->module_id;
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  nfapi_nr_dl_tti_request_t     *DL_req      = Sched_INFO->DL_req;
  nfapi_nr_tx_data_request_t    *TX_req      = Sched_INFO->TX_req;
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  nfapi_nr_ul_tti_request_t     *UL_tti_req  = Sched_INFO->UL_tti_req;
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  nfapi_nr_ul_dci_request_t     *UL_dci_req  = Sched_INFO->UL_dci_req;
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  frame_t                       frame        = Sched_INFO->frame;
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  sub_frame_t                   slot         = Sched_INFO->slot;
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  AssertFatal(RC.gNB!=NULL,"RC.gNB is null\n");
  AssertFatal(RC.gNB[Mod_id]!=NULL,"RC.gNB[%d] is null\n",Mod_id);

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  gNB         = RC.gNB[Mod_id];
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  uint8_t number_dl_pdu             = (DL_req==NULL) ? 0 : DL_req->dl_tti_request_body.nPDUs;
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  uint8_t number_ul_dci_pdu         = (UL_dci_req==NULL) ? 0 : UL_dci_req->numPdus;
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  uint8_t number_ul_tti_pdu         = (UL_tti_req==NULL) ? 0 : UL_tti_req->n_pdus;
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  uint8_t number_tx_data_pdu        = (TX_req == NULL) ? 0 : TX_req->Number_of_PDUs;
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  if (NFAPI_MODE == NFAPI_MONOLITHIC){
    if (DL_req != NULL && TX_req!=NULL && (number_dl_pdu > 0 || number_ul_dci_pdu > 0 || number_ul_tti_pdu > 0))
      LOG_D(PHY,"NFAPI: Sched_INFO:SFN/SLOT:%04d/%d DL_req:SFN/SLO:%04d/%d:dl_pdu:%d tx_req:SFN/SLOT:%04d/%d:pdus:%d;ul_dci %d ul_tti %d\n",
      frame,slot,
      DL_req->SFN,DL_req->Slot,number_dl_pdu,
      TX_req->SFN,TX_req->Slot,TX_req->Number_of_PDUs,
      number_ul_dci_pdu,number_ul_tti_pdu);
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    int pdcch_received=0;
    gNB->num_pdsch_rnti[slot]=0;
    for (int i=0; i<gNB->number_of_nr_dlsch_max; i++) {
      gNB->dlsch[i][0]->rnti=0;
      gNB->dlsch[i][0]->harq_mask=0;
    }
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    for (int i=0;i<number_dl_pdu;i++) {
      nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdu = &DL_req->dl_tti_request_body.dl_tti_pdu_list[i];
      LOG_D(PHY,"NFAPI: dl_pdu %d : type %d\n",i,dl_tti_pdu->PDUType);
      switch (dl_tti_pdu->PDUType) {
        case NFAPI_NR_DL_TTI_SSB_PDU_TYPE:
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          handle_nr_nfapi_ssb_pdu(gNB,frame,slot,
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                                  dl_tti_pdu);
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          break;
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        case NFAPI_NR_DL_TTI_PDCCH_PDU_TYPE:
          AssertFatal(pdcch_received == 0, "pdcch_received is not 0, we can only handle one PDCCH PDU per slot\n");
          handle_nfapi_nr_pdcch_pdu(gNB,
            frame, slot,
            &dl_tti_pdu->pdcch_pdu);
          pdcch_received = 1;
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          break;
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        case NFAPI_NR_DL_TTI_CSI_RS_PDU_TYPE:
          LOG_D(PHY,"frame %d, slot %d, Got NFAPI_NR_DL_TTI_CSI_RS_PDU_TYPE for %d.%d\n",frame,slot,DL_req->SFN,DL_req->Slot);
          handle_nfapi_nr_csirs_pdu(gNB,
            frame, slot,
            &dl_tti_pdu->csi_rs_pdu);
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          break;
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        case NFAPI_NR_DL_TTI_PDSCH_PDU_TYPE:
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          LOG_D(PHY,"frame %d, slot %d, Got NFAPI_NR_DL_TTI_PDSCH_PDU_TYPE for %d.%d\n",frame,slot,DL_req->SFN,DL_req->Slot);
          nfapi_nr_dl_tti_pdsch_pdu_rel15_t *pdsch_pdu_rel15 = &dl_tti_pdu->pdsch_pdu.pdsch_pdu_rel15;
          uint16_t pduIndex = pdsch_pdu_rel15->pduIndex;
          AssertFatal(TX_req->pdu_list[pduIndex].num_TLV == 1, "TX_req->pdu_list[%d].num_TLV %d != 1\n",
          pduIndex,TX_req->pdu_list[pduIndex].num_TLV);
          uint8_t *sdu = (uint8_t *)TX_req->pdu_list[pduIndex].TLVs[0].value.direct;
          handle_nr_nfapi_pdsch_pdu(gNB,frame,slot,&dl_tti_pdu->pdsch_pdu, sdu);
          break;
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      }
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    }
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    for (int i=0;i<number_ul_dci_pdu;i++) {
      handle_nfapi_nr_ul_dci_pdu(gNB, frame, slot, &UL_dci_req->ul_dci_pdu_list[i]);
    }
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    for (int i = 0; i < number_ul_tti_pdu; i++) {
      switch (UL_tti_req->pdus_list[i].pdu_type) {
        case NFAPI_NR_UL_CONFIG_PUSCH_PDU_TYPE:
          LOG_D(PHY,"frame %d, slot %d, Got NFAPI_NR_UL_TTI_PUSCH_PDU_TYPE for %d.%d\n", frame, slot, UL_tti_req->SFN, UL_tti_req->Slot);
          nr_fill_ulsch(gNB,UL_tti_req->SFN, UL_tti_req->Slot, &UL_tti_req->pdus_list[i].pusch_pdu);
          break;
        case NFAPI_NR_UL_CONFIG_PUCCH_PDU_TYPE:
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          LOG_D(PHY,"frame %d, slot %d, Got NFAPI_NR_UL_TTI_PUCCH_PDU_TYPE for %d.%d\n", frame, slot, UL_tti_req->SFN, UL_tti_req->Slot);
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          nr_fill_pucch(gNB,UL_tti_req->SFN, UL_tti_req->Slot, &UL_tti_req->pdus_list[i].pucch_pdu);
          break;
        case NFAPI_NR_UL_CONFIG_PRACH_PDU_TYPE:
          LOG_D(PHY,"frame %d, slot %d, Got NFAPI_NR_UL_TTI_PRACH_PDU_TYPE for %d.%d\n", frame, slot, UL_tti_req->SFN, UL_tti_req->Slot);
          nfapi_nr_prach_pdu_t *prach_pdu = &UL_tti_req->pdus_list[i].prach_pdu;
          nr_fill_prach(gNB, UL_tti_req->SFN, UL_tti_req->Slot, prach_pdu);
          if (gNB->RU_list[0]->if_south == LOCAL_RF) nr_fill_prach_ru(gNB->RU_list[0], UL_tti_req->SFN, UL_tti_req->Slot, prach_pdu);
          break;
      }
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    }
  }
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  if (NFAPI_MODE == NFAPI_MODE_VNF) { //If VNF, oai_nfapi functions send respective p7 msgs to PNF for which nPDUs is greater than 0

    if(number_ul_tti_pdu>0)
      oai_nfapi_ul_tti_req(UL_tti_req);

    if (number_ul_dci_pdu>0)
      oai_nfapi_ul_dci_req(UL_dci_req);
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    if (number_dl_pdu>0)
      oai_nfapi_dl_tti_req(DL_req);
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    if (number_tx_data_pdu>0)
      oai_nfapi_tx_data_req(TX_req);

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  }
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}