1 /******************************************************************************
3 * Copyright (c) 2019 Intel.
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.
17 *******************************************************************************/
21 * This file consist of implementation of FAPI SRS.indication message.
25 #include "nr5g_fapi_framework.h"
26 #include "gnb_l1_l2_api.h"
27 #include "nr5g_fapi_fapi2mac_api.h"
28 #include "nr5g_fapi_fapi2mac_p7_proc.h"
29 #include "nr5g_fapi_fapi2mac_p7_pvt_proc.h"
31 /** @ingroup group_source_api_p7_fapi2mac_proc
33 * @param[in] p_phy_ctx Pointer to PHY context.
34 * @param[in] p_phy_srs_ind Pointer to FAPI SRS.indication message structure.
36 * @return Returns ::SUCCESS and ::FAILURE.
39 * This message includes SRS PDU.
42 uint8_t nr5g_fapi_srs_indication(
43 p_nr5g_fapi_phy_ctx_t p_phy_ctx,
44 PRXSRSIndicationStruct p_phy_srs_ind)
47 fapi_srs_indication_t *p_fapi_srs_ind;
48 p_fapi_api_queue_elem_t p_list_elem;
49 p_nr5g_fapi_phy_instance_t p_phy_instance = NULL;
50 nr5g_fapi_stats_t *p_stats;
52 if (NULL == p_phy_ctx) {
53 NR5G_FAPI_LOG(ERROR_LOG, ("[SRS.indication] Invalid " "Phy Context"));
57 if (NULL == p_phy_srs_ind) {
58 NR5G_FAPI_LOG(ERROR_LOG, ("[SRS.indication] Invalid "
63 phy_id = p_phy_srs_ind->sSFN_Slot.nCarrierIdx;
64 p_phy_instance = &p_phy_ctx->phy_instance[phy_id];
65 if (p_phy_instance->phy_id != phy_id) {
66 NR5G_FAPI_LOG(ERROR_LOG, ("[SRS.indication] Invalid " "Phy Instance"));
70 p_stats = &p_phy_instance->stats;
71 p_stats->iapi_stats.iapi_srs_ind++;
74 nr5g_fapi_fapi2mac_create_api_list_elem(FAPI_SRS_INDICATION, 1,
75 sizeof(fapi_srs_indication_t));
77 NR5G_FAPI_LOG(ERROR_LOG, ("[SRS.indication] Unable "
78 "to create list element. Out of memory!!!"));
82 p_fapi_srs_ind = (fapi_srs_indication_t *) (p_list_elem + 1);
83 p_fapi_srs_ind->header.msg_id = FAPI_SRS_INDICATION;
84 p_fapi_srs_ind->header.length = (uint16_t) sizeof(fapi_srs_indication_t);
86 if (nr5g_fapi_srs_indication_to_fapi_translation(p_phy_instance,
87 p_phy_srs_ind, p_fapi_srs_ind)) {
88 NR5G_FAPI_LOG(ERROR_LOG,
89 ("[SRS.indication] L1 to FAPI " "translation failed"));
93 /* Add element to send list */
94 nr5g_fapi_fapi2mac_add_api_to_list(phy_id, p_list_elem);
96 p_stats->fapi_stats.fapi_srs_ind++;
97 NR5G_FAPI_LOG(DEBUG_LOG, ("[SRS.indication][%d][%d,%d]",
98 p_phy_instance->phy_id,
99 p_phy_srs_ind->sSFN_Slot.nSFN,
100 p_phy_srs_ind->sSFN_Slot.nSlot));
105 /** @ingroup group_source_api_p7_fapi2mac_proc
107 * @param[in] ue_id Variable holding ue_id received SRS.Indication..
108 * @param[in] p_ul_slot_info Pointer to ul slot info structure that stores the
109 * UL_TTI.request PDU info.
111 * @return Returns Pointer to srs info, if handle of p_ul_slot_info matches ue_id.
112 NULL, if handle of p_ul_slot_info not matches ue_id
115 * This function retrieves the srs info stored during corresponding UL_TTI.request processing.
119 nr5g_fapi_srs_info_t *nr5g_fapi_get_srs_info(
121 nr5g_fapi_ul_slot_info_t * p_ul_slot_info)
125 nr5g_fapi_srs_info_t *p_srs_info;
127 num_srs = p_ul_slot_info->num_srs;
128 for (i = 0; i < num_srs; i++) {
129 p_srs_info = &p_ul_slot_info->srs_info[i];
130 if (p_srs_info->handle == nUEId) {
137 /** @ingroup group_source_api_p7_fapi2mac_proc
139 * @param[in] p_phy_instance Pointer to PHY instance.
140 * @param[in] p_phy_srs_ind Pointer to IAPI SRS.indication structure.
141 * @param[out] p_fapi_srs_ind Pointer to FAPI SRS.indication structure.
143 * @return Returns ::SUCCESS and ::FAILURE.
146 * This function converts IAPI SRS.indication to FAPI SRS.indication
150 uint8_t nr5g_fapi_srs_indication_to_fapi_translation(
151 p_nr5g_fapi_phy_instance_t p_phy_instance,
152 PRXSRSIndicationStruct p_phy_srs_ind,
153 fapi_srs_indication_t * p_fapi_srs_ind)
155 uint8_t num_srs_pdus, i;
156 uint8_t slot_no, num_rept_symbols, nr_of_symbols;
157 uint16_t frame_no, num_rbs, j, k;
158 int8_t wideband_snr = 0, rb_snr;
161 nr5g_fapi_srs_info_t *p_srs_info;
162 fapi_srs_pdu_t *p_fapi_srs_pdu;
163 fapi_symb_snr_t *p_fapi_symb_snr;
164 nr5g_fapi_ul_slot_info_t *p_ul_slot_info;
165 nr5g_fapi_stats_t *p_stats;
166 ULSRSEstStruct *p_ul_srs_est_struct;
168 p_stats = &p_phy_instance->stats;
170 frame_no = p_fapi_srs_ind->sfn = p_phy_srs_ind->sSFN_Slot.nSFN;
171 slot_no = p_fapi_srs_ind->slot = p_phy_srs_ind->sSFN_Slot.nSlot;
174 nr5g_fapi_get_ul_slot_info(frame_no, slot_no, p_phy_instance);
176 if (p_ul_slot_info == NULL) {
177 NR5G_FAPI_LOG(ERROR_LOG, ("[SRS.indication] No Valid data available "
178 "for frame :%d and slot: %d", frame_no, slot_no));
182 num_srs_pdus = p_fapi_srs_ind->numPdus = p_phy_srs_ind->nNrOfSrs;
183 for (i = 0; i < num_srs_pdus; i++) {
184 p_stats->iapi_stats.iapi_srs_ind_pdus++;
185 p_fapi_srs_pdu = &p_fapi_srs_ind->srsPdus[i];
186 p_ul_srs_est_struct = &p_phy_srs_ind->sULSRSEstStruct[i];
188 nr5g_fapi_get_srs_info(p_ul_srs_est_struct->nUEId, p_ul_slot_info);
189 if (p_srs_info == NULL) {
190 NR5G_FAPI_LOG(ERROR_LOG,
191 ("[SRS.indication] No Valid data available "
192 "for nUEId:%d with frameno:%d, slot_no:%d",
193 p_ul_srs_est_struct->nUEId, frame_no, slot_no));
197 p_fapi_srs_pdu->handle = p_srs_info->handle;
198 p_fapi_srs_pdu->rnti = p_ul_srs_est_struct->nRNTI;
199 p_fapi_srs_pdu->timingAdvance = 0xFFFF;
201 nr_of_symbols = p_fapi_srs_pdu->numSymbols =
202 p_ul_srs_est_struct->nNrOfSymbols;
203 for (j = 0; j < nr_of_symbols; j++) {
204 temp += p_ul_srs_est_struct->nWideBandSNR[j];
206 wideband_snr = temp / nr_of_symbols;
208 p_fapi_srs_pdu->wideBandSnr = (wideband_snr + 64) * 2;
209 num_rept_symbols = p_fapi_srs_pdu->numReportedSymbols = 1;
211 for (j = 0; j < num_rept_symbols; j++) {
212 p_fapi_symb_snr = &p_fapi_srs_pdu->symbSnr[j];
213 num_rbs = p_fapi_symb_snr->numRbs =
214 p_ul_srs_est_struct->nNrOfBlocks * 4;
216 for (k = 0; k < num_rbs; k++) {
217 rb_snr = p_ul_srs_est_struct->nBlockSNR[k / 68][k % 68];
218 p_fapi_symb_snr->rbSNR[k] = (rb_snr + 64) * 2;
221 p_stats->fapi_stats.fapi_srs_ind_pdus++;