1 /*******************************************************************************
2 ################################################################################
3 # Copyright (c) [2017-2019] [Radisys] #
5 # Licensed under the Apache License, Version 2.0 (the "License"); #
6 # you may not use this file except in compliance with the License. #
7 # You may obtain a copy of the License at #
9 # http://www.apache.org/licenses/LICENSE-2.0 #
11 # Unless required by applicable law or agreed to in writing, software #
12 # distributed under the License is distributed on an "AS IS" BASIS, #
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
14 # See the License for the specific language governing permissions and #
15 # limitations under the License. #
16 ################################################################################
17 *******************************************************************************/
19 /************************************************************************
25 Desc: C source code for Entry point fucntions for slot indications
29 **********************************************************************/
31 /** @file sch_slot_ind.c
32 @brief This module processes slot indications
35 #include "envopt.h" /* environment options */
36 #include "envdep.h" /* environment dependent */
37 #include "envind.h" /* environment independent */
38 #include "gen.h" /* general layer */
39 #include "ssi.h" /* system service interface */
40 #include "cm_tkns.h" /* Common Token Defines */
41 #include "cm_llist.h" /* Common Link List Defines */
42 #include "cm_hash.h" /* Common Hash List Defines */
43 #include "cm_mblk.h" /* common memory link list library */
44 #include "cm_lte.h" /* Common LTE Defines */
48 #include "gen.x" /* general layer typedefs */
49 #include "ssi.x" /* system services typedefs */
50 #include "cm5.x" /* system services */
51 #include "cm_tkns.x" /* Common Token Definitions */
52 #include "cm_llist.x" /* Common Link List Definitions */
53 #include "cm_lib.x" /* Common Library Definitions */
54 #include "cm_hash.x" /* Common Hash List Definitions */
55 #include "cm_mblk.x" /* common memory link list library */
56 #include "cm_lte.x" /* Common LTE Defines */
60 #include "du_app_mac_inf.h"
61 #include "mac_sch_interface.h"
63 #include "sch_utils.h"
65 SchMacDlAllocFunc schMacDlAllocOpts[] =
72 extern SchCb schCb[SCH_MAX_INST];
73 extern int schFillRar(RarAlloc *rarAlloc, uint16_t raRnti, uint16_t pci, uint8_t
76 /*******************************************************************
78 * @brief Handles sending DL broadcast alloc to MAC
82 * Function : sendDlAllocToMac
85 * Sends DL Broadcast Resource Allocation to MAC from SCH
88 * @return ROK - success
91 * ****************************************************************/
92 int sendDlAllocToMac(DlAlloc *dlAlloc, Inst inst)
96 memset(&pst, 0, sizeof(Pst));
97 SCH_FILL_RSP_PST(pst, inst);
98 pst.event = EVENT_DL_ALLOC;
100 return(*schMacDlAllocOpts[pst.selector])(&pst, dlAlloc);
104 /*******************************************************************
106 * @brief Handles slot indication at SCH
110 * Function : schProcessSlotInd
113 * Handles TTI indication received from PHY
116 * @return ROK - success
119 * ****************************************************************/
120 uint8_t schProcessSlotInd(SlotIndInfo *slotInd, Inst schInst)
124 uint16_t sfn = slotInd->sfn;
125 uint16_t slot = slotInd->slot;
126 uint16_t sfnSlot = 0;
128 memset(&dlAlloc,0,sizeof(DlAlloc));
129 DlBrdcstAlloc *dlBrdcstAlloc = &dlAlloc.brdcstAlloc;
130 RarAlloc *rarAlloc = &dlAlloc.rarAlloc;
131 Msg4Alloc *msg4Alloc;
132 dlBrdcstAlloc->ssbTrans = NO_SSB;
133 dlBrdcstAlloc->sib1Trans = NO_SIB1;
136 SchCellCb *cell = schCb[schInst].cells[schInst];
142 // schDlResAlloc(cell, slotInd);
144 ssb_rep = cell->cellCfg.ssbSchCfg.ssbPeriod;
145 memcpy(&cell->slotInfo, slotInd, sizeof(SlotIndInfo));
146 dlBrdcstAlloc->ssbIdxSupported = 1;
148 if((slot + SCHED_DELTA) >= SCH_NUM_SLOTS)
150 sfn = (sfn+1)%SCH_MAX_SFN;
152 slot = ((slot + SCHED_DELTA) % SCH_NUM_SLOTS);
153 sfnSlot = ((sfn * 10) + slot);
155 dlAlloc.slotIndInfo.sfn = sfn;
156 dlAlloc.slotIndInfo.slot = slot;
157 dlAlloc.cellId = cell->cellId;
159 /* Identify SSB ocassion*/
160 if (sfnSlot % SCH_MIB_TRANS == 0)
162 dlBrdcstAlloc->ssbTrans = SSB_TRANSMISSION;
164 else if (sfnSlot % ssb_rep == 0)
166 dlBrdcstAlloc->ssbTrans = SSB_REPEAT;
170 /* not SSB occassion */
173 /* Identify SIB1 occasions */
174 if(sfnSlot % cell->cellCfg.sib1SchCfg.sib1NewTxPeriod == 0)
176 dlBrdcstAlloc->sib1Trans = SIB1_TRANSMISSION;
178 else if (sfnSlot % cell->cellCfg.sib1SchCfg.sib1RepetitionPeriod == 0)
180 dlBrdcstAlloc->sib1Trans = SIB1_REPITITION;
184 /* not SIB1 occassion */
187 if(dlBrdcstAlloc->ssbTrans || dlBrdcstAlloc->sib1Trans)
189 dlAlloc.isBroadcastPres = true;
190 ret = schBroadcastAlloc(cell, dlBrdcstAlloc,slot);
193 DU_LOG("\nschBroadcastAlloc failed");
199 if(cell->dlAlloc[slot]->rarPres == true)
201 dlAlloc.isRarPres = true;
202 /* RAR info is copied, this was earlier filled in schProcessRachInd */
203 memcpy(&rarAlloc->rarInfo, &cell->dlAlloc[slot]->rarInfo, sizeof(RarInfo));
205 /* pdcch and pdsch data is filled */
207 cell->dlAlloc[slot]->rarInfo.raRnti,
208 cell->cellCfg.phyCellId,
209 cell->cellCfg.ssbSchCfg.ssbOffsetPointA);
211 cell->dlAlloc[slot]->rarPres = false;
215 if(cell->dlAlloc[slot]->msg4Info)
217 SCH_ALLOC(msg4Alloc, sizeof(Msg4Alloc));
220 DU_LOG("\nMAC: Memory Allocation failed for msg4 alloc");
224 dlAlloc.msg4Alloc = msg4Alloc;
226 /* Msg4 info is copied, this was earlier filled in macSchDlRlcBoInfo */
227 memcpy(&msg4Alloc->msg4Info, cell->dlAlloc[slot]->msg4Info, \
230 /* pdcch and pdsch data is filled */
231 schDlRsrcAllocMsg4(msg4Alloc, cell, slot);
232 SCH_FREE(cell->dlAlloc[slot]->msg4Info, sizeof(Msg4Info));
233 cell->dlAlloc[slot]->msg4Info = NULL;
237 /* send msg to MAC */
238 ret = sendDlAllocToMac(&dlAlloc, schInst);
241 DU_LOG("\nSending DL Broadcast allocation from SCH to MAC failed");
245 schUlResAlloc(cell, schInst);
250 /**********************************************************************
252 **********************************************************************/