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openairinterface5g/openair1/PHY/LTE_TRANSPORT/if5_tools.c
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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 1.0 (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
*/
/*! \file PHY/LTE_TRANSPORT/if5_tools.c
* \brief
* \author S. Sandeep Kumar, Raymond Knopp
* \date 2016
* \version 0.1
* \company Eurecom
* \email: ee13b1025@iith.ac.in, knopp@eurecom.fr
* \note
* \warning
*/
#include "PHY/defs.h"
#include "targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
void send_IF5(PHY_VARS_eNB *eNB, openair0_timestamp proc_timestamp, int subframe, uint8_t *seqno, uint16_t packet_type) {
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
int32_t *txp[fp->nb_antennas_tx], *rxp[fp->nb_antennas_rx];
int32_t *tx_buffer=NULL;
uint16_t packet_id=0, i=0;
uint32_t spp_eth = (uint32_t) eNB->ifdevice.openair0_cfg->samples_per_packet;
uint32_t spsf = (uint32_t) eNB->ifdevice.openair0_cfg->samples_per_frame/10;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF5, 1 );
if (packet_type == IF5_RRH_GW_DL) {
for (i=0; i < fp->nb_antennas_tx; i++)
txp[i] = (void*)&eNB->common_vars.txdata[0][i][subframe*fp->samples_per_tti];
for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF, 1 );
eNB->ifdevice.trx_write_func(&eNB->ifdevice,
(proc_timestamp + packet_id*spp_eth),
(void**)txp,
spp_eth,
fp->nb_antennas_tx,
0);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF, 0 );
for (i=0; i < fp->nb_antennas_tx; i++)
txp[i] += spp_eth;
}
} else if (packet_type == IF5_RRH_GW_UL) {
for (i=0; i < fp->nb_antennas_rx; i++)
rxp[i] = (void*)&eNB->common_vars.rxdata[0][i][subframe*fp->samples_per_tti];
for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF, 1 );
eNB->ifdevice.trx_write_func(&eNB->ifdevice,
(proc_timestamp + packet_id*spp_eth),
(void**)rxp,
spp_eth,
fp->nb_antennas_rx,
0);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF, 0 );
for (i=0; i < fp->nb_antennas_rx; i++)
rxp[i] += spp_eth;
}
} else if (packet_type == IF5_MOBIPASS) {
uint16_t db_fulllength=640;
__m128i *data_block=NULL, *data_block_head=NULL;
__m128i *txp128;
__m128i t0, t1;
tx_buffer = memalign(16, MAC_HEADER_SIZE_BYTES + sizeof_IF5_mobipass_header_t + db_fulllength*sizeof(int16_t));
IF5_mobipass_header_t *header = (IF5_mobipass_header_t *)((uint8_t *)tx_buffer + MAC_HEADER_SIZE_BYTES);
data_block_head = (__m128i *)((uint8_t *)tx_buffer + MAC_HEADER_SIZE_BYTES + sizeof_IF5_mobipass_header_t + 4);
header->flags = 0;
header->fifo_status = 0;
header->seqno = *seqno;
header->ack = 0;
header->word0 = 0;
txp[0] = (void*)&eNB->common_vars.txdata[0][0][subframe*eNB->frame_parms.samples_per_tti];
txp128 = (__m128i *) txp[0];
for (packet_id=0; packet_id<fp->samples_per_tti/db_fulllength; packet_id++) {
header->time_stamp = (uint32_t)(proc_timestamp + packet_id*db_fulllength);
data_block = data_block_head;
for (i=0; i<db_fulllength>>2; i+=2) {
t0 = _mm_srai_epi16(*txp128++, 4);
t1 = _mm_srai_epi16(*txp128++, 4);
*data_block++ = _mm_packs_epi16(t0, t1);
}
// Write the packet to the fronthaul
if ((eNB->ifdevice.trx_write_func(&eNB->ifdevice,
packet_id,
(void**)&tx_buffer,
db_fulllength,
1,
IF5_MOBIPASS)) < 0) {
perror("ETHERNET write for IF5_MOBIPASS\n");
}
header->seqno += 1;
}
*seqno = header->seqno;
} else {
AssertFatal(1==0, "send_IF5 - Unknown packet_type %x", packet_type);
}
free(tx_buffer);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF5, 0 );
return;
}
void recv_IF5(PHY_VARS_eNB *eNB, openair0_timestamp *proc_timestamp, int subframe, uint16_t packet_type) {
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
int32_t *txp[fp->nb_antennas_tx], *rxp[fp->nb_antennas_rx];
uint16_t packet_id=0, i=0;
int32_t spp_eth = (int32_t) eNB->ifdevice.openair0_cfg->samples_per_packet;
int32_t spsf = (int32_t) eNB->ifdevice.openair0_cfg->samples_per_frame/10;
openair0_timestamp timestamp[spsf / spp_eth];
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF5, 1 );
if (packet_type == IF5_RRH_GW_DL) {
for (i=0; i < fp->nb_antennas_tx; i++)
txp[i] = (void*)&eNB->common_vars.txdata[0][i][subframe*fp->samples_per_tti];
for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF, 1 );
eNB->ifdevice.trx_read_func(&eNB->ifdevice,
&timestamp[packet_id],
(void**)txp,
spp_eth,
fp->nb_antennas_tx);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF, 0 );
for (i=0; i < fp->nb_antennas_tx; i++)
txp[i] += spp_eth;
}
*proc_timestamp = timestamp[0];
} else if (packet_type == IF5_RRH_GW_UL) {
for (i=0; i < fp->nb_antennas_rx; i++)
rxp[i] = (void*)&eNB->common_vars.rxdata[0][i][subframe*fp->samples_per_tti];
for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF, 1 );
eNB->ifdevice.trx_read_func(&eNB->ifdevice,
&timestamp[packet_id],
(void**)rxp,
spp_eth,
fp->nb_antennas_rx);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF, 0 );
for (i=0; i < fp->nb_antennas_rx; i++)
rxp[i] += spp_eth;
}
*proc_timestamp = timestamp[0];
} else if (packet_type == IF5_MOBIPASS) {
} else {
AssertFatal(1==0, "recv_IF5 - Unknown packet_type %x", packet_type);
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF5, 0 );
return;
}
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