lte-softmodem.c 103 KB
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/*******************************************************************************
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    OpenAirInterface
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    Copyright(c) 1999 - 2014 Eurecom
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    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
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    OpenAirInterface is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License
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    along with OpenAirInterface.The full GNU General Public License is
    included in this distribution in the file called "COPYING". If not,
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    see <http://www.gnu.org/licenses/>.
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   Contact Information
   OpenAirInterface Admin: openair_admin@eurecom.fr
   OpenAirInterface Tech : openair_tech@eurecom.fr
   OpenAirInterface Dev  : openair4g-devel@eurecom.fr
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   Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
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*******************************************************************************/
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/*! \file lte-softmodem.c
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 * \brief main program to control HW and scheduling
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 * \author R. Knopp, F. Kaltenberger, Navid Nikaein
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 * \date 2012
 * \version 0.1
 * \company Eurecom
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 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr
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 * \note
 * \warning
 */
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#define _GNU_SOURCE
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sched.h>
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#include <linux/sched.h>
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#include <signal.h>
#include <execinfo.h>
#include <getopt.h>
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#include <syscall.h>
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#include "rt_wrapper.h"
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#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all

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#include "assertions.h"
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#include "msc.h"
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#ifdef EMOS
#include <gps.h>
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struct gps_fix_t dummy_gps_data;
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#endif

#include "PHY/types.h"
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#include "PHY/defs.h"
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#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all
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//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
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#ifdef EXMIMO
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#include "openair0_lib.h"
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#else
#include "../../ARCH/COMMON/common_lib.h"
#endif

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//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
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#include "PHY/vars.h"
#include "MAC_INTERFACE/vars.h"
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//#include "SCHED/defs.h"
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#include "SCHED/vars.h"
#include "LAYER2/MAC/vars.h"

#include "../../SIMU/USER/init_lte.h"

#ifdef EMOS
#include "SCHED/phy_procedures_emos.h"
#endif

#ifdef OPENAIR2
#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/vars.h"
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#include "LAYER2/MAC/proto.h"
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#include "RRC/LITE/vars.h"
#include "PHY_INTERFACE/vars.h"
#endif

#ifdef SMBV
#include "PHY/TOOLS/smbv.h"
unsigned short config_frames[4] = {2,9,11,13};
#endif
#include "UTIL/LOG/log_extern.h"
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#include "UTIL/OTG/otg_tx.h"
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#include "UTIL/OTG/otg_externs.h"
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#include "UTIL/MATH/oml.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
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#include "UTIL/OPT/opt.h"
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#include "enb_config.h"
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//#include "PHY/TOOLS/time_meas.h"
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#ifndef OPENAIR2
#include "UTIL/OTG/otg_vars.h"
#endif

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#if defined(ENABLE_ITTI)
# include "intertask_interface_init.h"
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# include "create_tasks.h"
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# if defined(ENABLE_USE_MME)
#   include "s1ap_eNB.h"
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#ifdef PDCP_USE_NETLINK
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#   include "SIMULATION/ETH_TRANSPORT/proto.h"
#endif
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# endif
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#endif

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#ifdef XFORMS
#include "PHY/TOOLS/lte_phy_scope.h"
#include "stats.h"
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#endif

#define FRAME_PERIOD    100000000ULL
#define DAQ_PERIOD      66667ULL

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//#define DEBUG_THREADS 1
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//#define USRP_DEBUG 1

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struct timing_info_t {
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    //unsigned int frame, hw_slot, last_slot, next_slot;
    RTIME time_min, time_max, time_avg, time_last, time_now;
    //unsigned int mbox0, mbox1, mbox2, mbox_target;
    unsigned int n_samples;
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} timing_info;


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openair0_config_t openair0_cfg[MAX_CARDS];
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int32_t **rxdata;
int32_t **txdata;
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int setup_ue_buffers(PHY_VARS_UE **phy_vars_ue, openair0_config_t *openair0_cfg, openair0_rf_map rf_map[MAX_NUM_CCs]);
int setup_eNB_buffers(PHY_VARS_eNB **phy_vars_eNB, openair0_config_t *openair0_cfg, openair0_rf_map rf_map[MAX_NUM_CCs]);
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void fill_ue_band_info(void);
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#ifdef XFORMS
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// current status is that every UE has a DL scope for a SINGLE eNB (eNB_id=0)
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// at eNB 0, an UL scope for every UE
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FD_lte_phy_scope_ue  *form_ue[NUMBER_OF_UE_MAX];
FD_lte_phy_scope_enb *form_enb[NUMBER_OF_UE_MAX];
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FD_stats_form                  *form_stats=NULL,*form_stats_l2=NULL;
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char title[255];
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unsigned char                   scope_enb_num_ue = 1;
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#endif //XFORMS

#ifdef RTAI
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static long                      main_eNB_thread;
static long                      main_ue_thread;
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#else
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pthread_t                       main_eNB_thread;
pthread_t                       main_ue_thread;
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pthread_attr_t                  attr_dlsch_threads;
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pthread_attr_t                  attr_UE_thread;

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#ifndef LOWLATENCY
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struct sched_param              sched_param_dlsch;
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#endif
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#endif
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pthread_cond_t sync_cond;
pthread_mutex_t sync_mutex;
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int sync_var=-1;

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struct sched_param              sched_param_UE_thread;
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pthread_attr_t                  attr_eNB_proc_tx[MAX_NUM_CCs][NUM_ENB_THREADS];
pthread_attr_t                  attr_eNB_proc_rx[MAX_NUM_CCs][NUM_ENB_THREADS];
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#ifndef LOWLATENCY
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struct sched_param              sched_param_eNB_proc_tx[MAX_NUM_CCs][NUM_ENB_THREADS];
struct sched_param              sched_param_eNB_proc_rx[MAX_NUM_CCs][NUM_ENB_THREADS];
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#endif
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#ifdef XFORMS
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static pthread_t                forms_thread; //xforms
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#endif
#ifdef EMOS
static pthread_t                thread3; //emos
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static pthread_t                thread4; //GPS
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#endif
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openair0_device openair0;
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/*
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  static int instance_cnt=-1; //0 means worker is busy, -1 means its free
  int instance_cnt_ptr_kern,*instance_cnt_ptr_user;
  int pci_interface_ptr_kern;
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*/
//extern unsigned int bigphys_top;
//extern unsigned int mem_base;

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int                             card = 0;
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#if defined(ENABLE_ITTI)
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static volatile int             start_eNB = 0;
static volatile int             start_UE = 0;
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#endif
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volatile int                    oai_exit = 0;

//static int                      time_offset[4] = {-138,-138,-138,-138};
//static int                      time_offset[4] = {-145,-145,-145,-145};
static int                      time_offset[4] = {0,0,0,0};

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static char                     UE_flag=0;
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//static uint8_t                  eNB_id=0,UE_id=0;

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uint32_t                 downlink_frequency[MAX_NUM_CCs][4];
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int32_t                  uplink_frequency_offset[MAX_NUM_CCs][4];
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openair0_rf_map rf_map[MAX_NUM_CCs];
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static char                    *conf_config_file_name = NULL;
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#if defined(ENABLE_ITTI)
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static char                    *itti_dump_file = NULL;
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#endif

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int UE_scan = 1;
runmode_t mode = normal_txrx;


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#ifdef EXMIMO
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#if MAX_NUM_CCs == 1
double tx_gain[MAX_NUM_CCs][4] = {{20,20,0,0}};
double rx_gain[MAX_NUM_CCs][4] = {{20,20,0,0}};
#else
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double tx_gain[MAX_NUM_CCs][4] = {{20,20,0,0},{20,20,0,0}};
double rx_gain[MAX_NUM_CCs][4] = {{20,20,0,0},{20,20,0,0}};
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#endif
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// these are for EXMIMO2 target only
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/*
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  static unsigned int             rxg_max[4] =    {133,133,133,133};
  static unsigned int             rxg_med[4] =    {127,127,127,127};
  static unsigned int             rxg_byp[4] =    {120,120,120,120};
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 */
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// these are for EXMIMO2 card 39
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unsigned int             rxg_max[4] =    {128,128,128,126};
unsigned int             rxg_med[4] =    {122,123,123,120};
unsigned int             rxg_byp[4] =    {116,117,116,116};
unsigned int             nf_max[4] =    {7,9,16,12};
unsigned int             nf_med[4] =    {12,13,22,17};
unsigned int             nf_byp[4] =    {15,20,29,23};
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#if MAX_NUM_CCs == 1
rx_gain_t                rx_gain_mode[MAX_NUM_CCs][4] = {{max_gain,max_gain,max_gain,max_gain}};
#else
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rx_gain_t                rx_gain_mode[MAX_NUM_CCs][4] = {{max_gain,max_gain,max_gain,max_gain},{max_gain,max_gain,max_gain,max_gain}};
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#endif
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#else
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double tx_gain[MAX_NUM_CCs][4] = {{20,0,0,0}};
double rx_gain[MAX_NUM_CCs][4] = {{110,0,0,0}};
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#endif
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double sample_rate=30.72e6;
double bw = 14e6;
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static int                      tx_max_power[MAX_NUM_CCs]; /* =  {0,0}*/;
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#ifndef EXMIMO
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char ref[128] = "internal";
char channels[128] = "0";

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unsigned int samples_per_frame = 307200;
unsigned int tx_forward_nsamps;
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int tx_delay;

#endif
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int                      rx_input_level_dBm;
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static int                      online_log_messages=0;
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#ifdef XFORMS
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extern int                      otg_enabled;
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static char                     do_forms=0;
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#else
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int                             otg_enabled;
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#endif
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//int                             number_of_cards =   1;
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#ifdef EXMIMO
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static int                      mbox_bounds[20] =   {8,16,24,30,38,46,54,60,68,76,84,90,98,106,114,120,128,136,144, 0}; ///boundaries of slots in terms ob mbox counter rounded up to even numbers
//static int                      mbox_bounds[20] =   {6,14,22,28,36,44,52,58,66,74,82,88,96,104,112,118,126,134,142, 148}; ///boundaries of slots in terms ob mbox counter rounded up to even numbers
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#endif
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static LTE_DL_FRAME_PARMS      *frame_parms[MAX_NUM_CCs];
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int multi_thread=1;
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uint32_t target_dl_mcs = 28; //maximum allowed mcs
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uint32_t target_ul_mcs = 10;
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uint8_t exit_missed_slots=1;
uint64_t num_missed_slots=0; // counter for the number of missed slots
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time_stats_t softmodem_stats_mt; // main thread
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time_stats_t softmodem_stats_hw; //  hw acquisition
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time_stats_t softmodem_stats_tx_sf[10]; // total tx time
time_stats_t softmodem_stats_rx_sf[10]; // total rx time
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void reset_opp_meas(void);
void print_opp_meas(void);
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int transmission_mode=1;
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int16_t           glog_level         = LOG_INFO;
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int16_t           glog_verbosity     = LOG_MED;
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int16_t           hw_log_level       = LOG_INFO;
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int16_t           hw_log_verbosity   = LOG_MED;
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int16_t           phy_log_level      = LOG_INFO;
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int16_t           phy_log_verbosity  = LOG_MED;
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int16_t           mac_log_level      = LOG_INFO;
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int16_t           mac_log_verbosity  = LOG_MED;
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int16_t           rlc_log_level      = LOG_INFO;
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int16_t           rlc_log_verbosity  = LOG_MED;
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int16_t           pdcp_log_level     = LOG_INFO;
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int16_t           pdcp_log_verbosity = LOG_MED;
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int16_t           rrc_log_level      = LOG_INFO;
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int16_t           rrc_log_verbosity  = LOG_MED;
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int16_t           opt_log_level      = LOG_INFO;
int16_t           opt_log_verbosity  = LOG_MED;

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# if defined(ENABLE_USE_MME)
int16_t           gtpu_log_level     = LOG_DEBUG;
int16_t           gtpu_log_verbosity = LOG_MED;
int16_t           udp_log_level      = LOG_DEBUG;
int16_t           udp_log_verbosity  = LOG_MED;
#endif
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#if defined (ENABLE_SECURITY)
int16_t           osa_log_level      = LOG_INFO;
int16_t           osa_log_verbosity  = LOG_MED;
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#endif
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#ifdef ETHERNET
char rrh_eNB_ip[20] = "127.0.0.1";
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int rrh_eNB_port = 50000;
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char *rrh_UE_ip = "127.0.0.1";
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int rrh_UE_port = 51000;
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#endif

char uecap_xer[1024],uecap_xer_in=0;
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extern void *UE_thread(void *arg);
extern void init_UE_threads(void);
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unsigned int build_rflocal(int txi, int txq, int rxi, int rxq)
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{
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  return (txi + (txq<<6) + (rxi<<12) + (rxq<<18));
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}
unsigned int build_rfdc(int dcoff_i_rxfe, int dcoff_q_rxfe)
{
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  return (dcoff_i_rxfe + (dcoff_q_rxfe<<8));
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}

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#ifdef LOWLATENCY
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int sched_setattr(pid_t pid, const struct sched_attr *attr, unsigned int flags)
{
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  return syscall(__NR_sched_setattr, pid, attr, flags);
}


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int sched_getattr(pid_t pid,struct sched_attr *attr,unsigned int size, unsigned int flags)
{
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  return syscall(__NR_sched_getattr, pid, attr, size, flags);
}
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#endif
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#if !defined(ENABLE_ITTI)
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void signal_handler(int sig)
{
  void *array[10];
  size_t size;

  if (sig==SIGSEGV) {
    // get void*'s for all entries on the stack
    size = backtrace(array, 10);
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    // print out all the frames to stderr
    fprintf(stderr, "Error: signal %d:\n", sig);
    backtrace_symbols_fd(array, size, 2);
    exit(-1);
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  } else {
    printf("trying to exit gracefully...\n");
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    oai_exit = 1;
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  }
}
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#endif
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void exit_fun(const char* s)
{
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  if (s != NULL) {
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    printf("%s %s() Exiting OAI softmodem: %s\n",__FILE__, __FUNCTION__, s);
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  }

  oai_exit = 1;

#if defined(ENABLE_ITTI)
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  sleep(1); //allow lte-softmodem threads to exit first
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  itti_terminate_tasks (TASK_UNKNOWN);
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#endif
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  //rt_sleep_ns(FRAME_PERIOD);

  //exit (-1);
}

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static int latency_target_fd = -1;
static int32_t latency_target_value = 0;
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/* Latency trick - taken from cyclictest.c
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 * if the file /dev/cpu_dma_latency exists,
 * open it and write a zero into it. This will tell
 * the power management system not to transition to
 * a high cstate (in fact, the system acts like idle=poll)
 * When the fd to /dev/cpu_dma_latency is closed, the behavior
 * goes back to the system default.
 *
 * Documentation/power/pm_qos_interface.txt
 */
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static void set_latency_target(void)
{
  struct stat s;
  int ret;
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  if (stat("/dev/cpu_dma_latency", &s) == 0) {
    latency_target_fd = open("/dev/cpu_dma_latency", O_RDWR);
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    if (latency_target_fd == -1)
      return;
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    ret = write(latency_target_fd, &latency_target_value, 4);
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    if (ret == 0) {
      printf("# error setting cpu_dma_latency to %d!: %s\n", latency_target_value, strerror(errno));
      close(latency_target_fd);
      return;
    }
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    printf("# /dev/cpu_dma_latency set to %dus\n", latency_target_value);
  }
}
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#ifdef XFORMS
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void reset_stats(FL_OBJECT *button, long arg)
{
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  int i,j,k;
  PHY_VARS_eNB *phy_vars_eNB = PHY_vars_eNB_g[0][0];
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  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
    for (k=0; k<8; k++) { //harq_processes
      for (j=0; j<phy_vars_eNB->dlsch_eNB[i][0]->Mdlharq; j++) {
        phy_vars_eNB->eNB_UE_stats[i].dlsch_NAK[k][j]=0;
        phy_vars_eNB->eNB_UE_stats[i].dlsch_ACK[k][j]=0;
        phy_vars_eNB->eNB_UE_stats[i].dlsch_trials[k][j]=0;
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      }
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      phy_vars_eNB->eNB_UE_stats[i].dlsch_l2_errors[k]=0;
      phy_vars_eNB->eNB_UE_stats[i].ulsch_errors[k]=0;
      phy_vars_eNB->eNB_UE_stats[i].ulsch_consecutive_errors=0;
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      for (j=0; j<phy_vars_eNB->ulsch_eNB[i]->Mdlharq; j++) {
        phy_vars_eNB->eNB_UE_stats[i].ulsch_decoding_attempts[k][j]=0;
        phy_vars_eNB->eNB_UE_stats[i].ulsch_decoding_attempts_last[k][j]=0;
        phy_vars_eNB->eNB_UE_stats[i].ulsch_round_errors[k][j]=0;
        phy_vars_eNB->eNB_UE_stats[i].ulsch_round_fer[k][j]=0;
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      }
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    }
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    phy_vars_eNB->eNB_UE_stats[i].dlsch_sliding_cnt=0;
    phy_vars_eNB->eNB_UE_stats[i].dlsch_NAK_round0=0;
    phy_vars_eNB->eNB_UE_stats[i].dlsch_mcs_offset=0;
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  }
}

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static void *scope_thread(void *arg)
{
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  char stats_buffer[16384];
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# ifdef ENABLE_XFORMS_WRITE_STATS
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  FILE *UE_stats, *eNB_stats;
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# endif
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  int len = 0;
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  struct sched_param sched_param;
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  int UE_id;
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  sched_param.sched_priority = sched_get_priority_min(SCHED_FIFO)+1;
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  sched_setscheduler(0, SCHED_FIFO,&sched_param);
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  printf("Scope thread has priority %d\n",sched_param.sched_priority);
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# ifdef ENABLE_XFORMS_WRITE_STATS
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  if (UE_flag==1)
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    UE_stats  = fopen("UE_stats.txt", "w");
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  else
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    eNB_stats = fopen("eNB_stats.txt", "w");
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#endif
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  while (!oai_exit) {
    if (UE_flag==1) {
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      len = dump_ue_stats (PHY_vars_UE_g[0][0], stats_buffer, 0, mode,rx_input_level_dBm);
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      fl_set_object_label(form_stats->stats_text, stats_buffer);
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      phy_scope_UE(form_ue[0],
                   PHY_vars_UE_g[0][0],
                   0,
                   0,7);

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    } else {
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#ifdef OPENAIR2
      len = dump_eNB_l2_stats (stats_buffer, 0);
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      fl_set_object_label(form_stats_l2->stats_text, stats_buffer);
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#endif
      len = dump_eNB_stats (PHY_vars_eNB_g[0][0], stats_buffer, 0);
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      if (MAX_NUM_CCs>1)
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        len += dump_eNB_stats (PHY_vars_eNB_g[0][1], &stats_buffer[len], 0);

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      fl_set_object_label(form_stats->stats_text, stats_buffer);

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      for(UE_id=0; UE_id<scope_enb_num_ue; UE_id++) {
        phy_scope_eNB(form_enb[UE_id],
                      PHY_vars_eNB_g[0][0],
                      UE_id);
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      }
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    }
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    //printf("doing forms\n");
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    //usleep(100000); // 100 ms
    sleep(1);
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  }
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  printf("%s",stats_buffer);
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# ifdef ENABLE_XFORMS_WRITE_STATS
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  if (UE_flag==1) {
    if (UE_stats) {
      rewind (UE_stats);
      fwrite (stats_buffer, 1, len, UE_stats);
      fclose (UE_stats);
    }
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  } else {
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    if (eNB_stats) {
      rewind (eNB_stats);
      fwrite (stats_buffer, 1, len, eNB_stats);
      fclose (eNB_stats);
    }
  }
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# endif
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  pthread_exit((void*)arg);
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}
#endif

#ifdef EMOS
#define NO_ESTIMATES_DISK 100 //No. of estimates that are aquired before dumped to disk

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void* gps_thread (void *arg)
{

  struct gps_data_t gps_data;
  struct gps_data_t *gps_data_ptr = &gps_data;
  struct sched_param sched_param;
  int ret;

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  sched_param.sched_priority = sched_get_priority_min(SCHED_FIFO)+1;
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  sched_setscheduler(0, SCHED_FIFO,&sched_param);
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  printf("GPS thread has priority %d\n",sched_param.sched_priority);

  memset(&dummy_gps_data,0,sizeof(struct gps_fix_t));
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#if GPSD_API_MAJOR_VERSION>=5
  ret = gps_open("127.0.0.1","2947",gps_data_ptr);
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  if (ret!=0)
#else
  gps_data_ptr = gps_open("127.0.0.1","2947");
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  if (gps_data_ptr == NULL)
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#endif
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  {
    printf("[EMOS] Could not open GPS\n");
    pthread_exit((void*)arg);
  }

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#if GPSD_API_MAJOR_VERSION>=4
  else if (gps_stream(gps_data_ptr, WATCH_ENABLE,NULL) != 0)
#else
  else if (gps_query(gps_data_ptr, "w+x") != 0)
#endif
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  {
    printf("[EMOS] Error sending command to GPS\n");
    pthread_exit((void*) arg);
  } else
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    printf("[EMOS] Opened GPS, gps_data=%p\n", gps_data_ptr);

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  while (!oai_exit) {
    printf("[EMOS] polling data from gps\n");
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#if GPSD_API_MAJOR_VERSION>=5
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    if (gps_waiting(gps_data_ptr,500)) {
      if (gps_read(gps_data_ptr) <= 0) {
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#else
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    if (gps_waiting(gps_data_ptr)) {
      if (gps_poll(gps_data_ptr) != 0) {
#endif
        printf("[EMOS] problem polling data from gps\n");
      } else {
        memcpy(&dummy_gps_data,&(gps_data_ptr->fix),sizeof(struct gps_fix_t));
        printf("[EMOS] lat %g, lon %g\n",gps_data_ptr->fix.latitude,gps_data_ptr->fix.longitude);
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      }
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    } //gps_waiting
    else {
      printf("[EMOS] WARNING: No GPS data available, storing dummy packet\n");
    }

    //rt_sleep_ns(1000000000LL);
    sleep(1);
  } //oai_exit
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  pthread_exit((void*) arg);

}

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void *emos_thread (void *arg)
{
  char c;
  char *fifo2file_buffer, *fifo2file_ptr;

  int fifo, counter=0, bytes;

  FILE  *dumpfile_id;
  char  dumpfile_name[1024];
  time_t starttime_tmp;
  struct tm starttime;
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  int channel_buffer_size,ret;
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  time_t timer;
  struct tm *now;

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  struct sched_param sched_param;
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  sched_param.sched_priority = sched_get_priority_max(SCHED_FIFO)-1;
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  sched_setscheduler(0, SCHED_FIFO,&sched_param);
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  printf("EMOS thread has priority %d\n",sched_param.sched_priority);
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  timer = time(NULL);
  now = localtime(&timer);

  if (UE_flag==0)
    channel_buffer_size = sizeof(fifo_dump_emos_eNB);
  else
    channel_buffer_size = sizeof(fifo_dump_emos_UE);

  // allocate memory for NO_FRAMES_DISK channes estimations
  fifo2file_buffer = malloc(NO_ESTIMATES_DISK*channel_buffer_size);
  fifo2file_ptr = fifo2file_buffer;

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  if (fifo2file_buffer == NULL) {
    printf("[EMOS] Cound not allocate memory for fifo2file_buffer\n");
    exit(EXIT_FAILURE);
  }
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  if ((fifo = open(CHANSOUNDER_FIFO_DEV, O_RDONLY)) < 0) {
    fprintf(stderr, "[EMOS] Error opening the fifo\n");
    exit(EXIT_FAILURE);
  }
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  time(&starttime_tmp);
  localtime_r(&starttime_tmp,&starttime);
  snprintf(dumpfile_name,1024,"/tmp/%s_data_%d%02d%02d_%02d%02d%02d.EMOS",
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           (UE_flag==0) ? "eNB" : "UE",
           1900+starttime.tm_year, starttime.tm_mon+1, starttime.tm_mday, starttime.tm_hour, starttime.tm_min, starttime.tm_sec);
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  dumpfile_id = fopen(dumpfile_name,"w");
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  if (dumpfile_id == NULL) {
    fprintf(stderr, "[EMOS] Error opening dumpfile %s\n",dumpfile_name);
    exit(EXIT_FAILURE);
  }
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  printf("[EMOS] starting dump, channel_buffer_size=%d, fifo %d\n",channel_buffer_size,fifo);
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  while (!oai_exit) {
    /*
    bytes = rtf_read_timed(fifo, fifo2file_ptr, channel_buffer_size,100);
    if (bytes==0)
    continue;
    */
    bytes = rtf_read_all_at_once(fifo, fifo2file_ptr, channel_buffer_size);
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    if (bytes<=0) {
      usleep(100);
      continue;
    }
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    if (bytes != channel_buffer_size) {
      printf("[EMOS] ERROR! Only got %d bytes instead of %d!\n",bytes,channel_buffer_size);
    }
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    /*
    if (UE_flag==0)
    printf("eNB: count %d, frame %d, read: %d bytes from the fifo\n",counter, ((fifo_dump_emos_eNB*)fifo2file_ptr)->frame_tx,bytes);
    else
    printf("UE: count %d, frame %d, read: %d bytes from the fifo\n",counter, ((fifo_dump_emos_UE*)fifo2file_ptr)->frame_rx,bytes);
    */
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    fifo2file_ptr += channel_buffer_size;
    counter ++;

    if (counter == NO_ESTIMATES_DISK) {
      //reset stuff
      fifo2file_ptr = fifo2file_buffer;
      counter = 0;

      //flush buffer to disk
      if (UE_flag==0)
        printf("[EMOS] eNB: count %d, frame %d, flushing buffer to disk\n",
               counter, ((fifo_dump_emos_eNB*)fifo2file_ptr)->frame_tx);
      else
        printf("[EMOS] UE: count %d, frame %d, flushing buffer to disk\n",
               counter, ((fifo_dump_emos_UE*)fifo2file_ptr)->frame_rx);


      if (fwrite(fifo2file_buffer, sizeof(char), NO_ESTIMATES_DISK*channel_buffer_size, dumpfile_id) != NO_ESTIMATES_DISK*channel_buffer_size) {
        fprintf(stderr, "[EMOS] Error writing to dumpfile\n");
        exit(EXIT_FAILURE);
      }
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      if (fwrite(&dummy_gps_data, sizeof(char), sizeof(struct gps_fix_t), dumpfile_id) != sizeof(struct gps_fix_t)) {
        printf("[EMOS] Error writing to dumpfile, stopping recording\n");
        exit(EXIT_FAILURE);
      }
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    }
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  }

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  free(fifo2file_buffer);
  fclose(dumpfile_id);
  close(fifo);
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  pthread_exit((void*) arg);

}
#endif

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#if defined(ENABLE_ITTI)
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static void wait_system_ready (char *message, volatile int *start_flag)
{
  /* Wait for eNB application initialization to be complete (eNB registration to MME) */
  {
    static char *indicator[] = {".    ", "..   ", "...  ", ".... ", ".....",
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                                " ....", "  ...", "   ..", "    .", "     "
                               };
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    int i = 0;

    while ((!oai_exit) && (*start_flag == 0)) {
      LOG_N(EMU, message, indicator[i]);
      i = (i + 1) % (sizeof(indicator) / sizeof(indicator[0]));
      usleep(200000);
    }
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    LOG_D(EMU,"\n");
  }
}
#endif

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#if defined(ENABLE_ITTI)
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void *l2l1_task(void *arg)
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{
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  MessageDef *message_p = NULL;
  int         result;

  itti_set_task_real_time(TASK_L2L1);
  itti_mark_task_ready(TASK_L2L1);
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  if (UE_flag == 0) {
    /* Wait for the initialize message */
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    do {
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      if (message_p != NULL) {
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        result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
        AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
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      }
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      itti_receive_msg (TASK_L2L1, &message_p);

      switch (ITTI_MSG_ID(message_p)) {
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      case INITIALIZE_MESSAGE:
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        /* Start eNB thread */
        LOG_D(EMU, "L2L1 TASK received %s\n", ITTI_MSG_NAME(message_p));
        start_eNB = 1;
        break;
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      case TERMINATE_MESSAGE:
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        printf("received terminate message\n");
        oai_exit=1;
        itti_exit_task ();
        break;
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      default:
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        LOG_E(EMU, "Received unexpected message %s\n", ITTI_MSG_NAME(message_p));
        break;
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      }
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    } while (ITTI_MSG_ID(message_p) != INITIALIZE_MESSAGE);
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    result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
    AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
  }

  do {
    // Wait for a message
    itti_receive_msg (TASK_L2L1, &message_p);

    switch (ITTI_MSG_ID(message_p)) {
    case TERMINATE_MESSAGE:
      oai_exit=1;
      itti_exit_task ();
      break;

    case ACTIVATE_MESSAGE:
      start_UE = 1;
      break;

    case DEACTIVATE_MESSAGE:
      start_UE = 0;
      break;
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    case MESSAGE_TEST:
      LOG_I(EMU, "Received %s\n", ITTI_MSG_NAME(message_p));
      break;

    default:
      LOG_E(EMU, "Received unexpected message %s\n", ITTI_MSG_NAME(message_p));
      break;
    }

    result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
    AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
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  } while(!oai_exit);
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  return NULL;
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}
#endif

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void do_OFDM_mod_rt(int subframe,PHY_VARS_eNB *phy_vars_eNB)
{
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  unsigned int aa,slot_offset, slot_offset_F;
  int dummy_tx_b[7680*4] __attribute__((aligned(16)));
  int i, tx_offset;
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  int slot_sizeF = (phy_vars_eNB->lte_frame_parms.ofdm_symbol_size)*
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                   ((phy_vars_eNB->lte_frame_parms.Ncp==1) ? 6 : 7);
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  slot_offset_F = (subframe<<1)*slot_sizeF;
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  slot_offset = subframe*phy_vars_eNB->lte_frame_parms.samples_per_tti;

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  if ((subframe_select(&phy_vars_eNB->lte_frame_parms,subframe)==SF_DL)||
      ((subframe_select(&phy_vars_eNB->lte_frame_parms,subframe)==SF_S))) {
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    //    LOG_D(HW,"Frame %d: Generating slot %d\n",frame,next_slot);

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    for (aa=0; aa<phy_vars_eNB->lte_frame_parms.nb_antennas_tx; aa++) {
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      if (phy_vars_eNB->lte_frame_parms.Ncp == EXTENDED) {
        PHY_ofdm_mod(&phy_vars_eNB->lte_eNB_common_vars.txdataF[0][aa][slot_offset_F],
                     dummy_tx_b,
                     phy_vars_eNB->lte_frame_parms.log2_symbol_size,
                     6,
                     phy_vars_eNB->lte_frame_parms.nb_prefix_samples,
                     phy_vars_eNB->lte_frame_parms.twiddle_ifft,
                     phy_vars_eNB->lte_frame_parms.rev,
                     CYCLIC_PREFIX);
        PHY_ofdm_mod(&phy_vars_eNB->lte_eNB_common_vars.txdataF[0][aa][slot_offset_F+slot_sizeF],
                     dummy_tx_b+(phy_vars_eNB->lte_frame_parms.samples_per_tti>>1),
                     phy_vars_eNB->lte_frame_parms.log2_symbol_size,
                     6,
                     phy_vars_eNB->lte_frame_parms.nb_prefix_samples,
                     phy_vars_eNB->lte_frame_parms.twiddle_ifft,
                     phy_vars_eNB->lte_frame_parms.rev,
                     CYCLIC_PREFIX);
      } else {
        normal_prefix_mod(&phy_vars_eNB->lte_eNB_common_vars.txdataF[0][aa][slot_offset_F],
                          dummy_tx_b,
                          7,
                          &(phy_vars_eNB->lte_frame_parms));
        normal_prefix_mod(&phy_vars_eNB->lte_eNB_common_vars.txdataF[0][aa][slot_offset_F+slot_sizeF],
                          dummy_tx_b+(phy_vars_eNB->lte_frame_parms.samples_per_tti>>1),
                          7,
                          &(phy_vars_eNB->lte_frame_parms));
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      }
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      for (i=0; i<phy_vars_eNB->lte_frame_parms.samples_per_tti; i++) {
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        tx_offset = (int)slot_offset+time_offset[aa]+i;

        if (tx_offset<0)
          tx_offset += LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*phy_vars_eNB->lte_frame_parms.samples_per_tti;

        if (tx_offset>=(LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*phy_vars_eNB->lte_frame_parms.samples_per_tti))
          tx_offset -= LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*phy_vars_eNB->lte_frame_parms.samples_per_tti;

        ((short*)&phy_vars_eNB->lte_eNB_common_vars.txdata[0][aa][tx_offset])[0]=
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#ifdef EXMIMO
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          ((short*)dummy_tx_b)[2*i]<<4;
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#else
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          ((short*)dummy_tx_b)[2*i]<<5;
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#endif
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        ((short*)&phy_vars_eNB->lte_eNB_common_vars.txdata[0][aa][tx_offset])[1]=
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#ifdef EXMIMO
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          ((short*)dummy_tx_b)[2*i+1]<<4;
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#else
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          ((short*)dummy_tx_b)[2*i+1]<<5;
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#endif
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      }
    }
  }
}


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/*!
 * \brief The transmit thread of eNB.
 * \ref NUM_ENB_THREADS threads of this type are active at the same time.
 * \param param is a \ref eNB_proc_t structure which contains the info what to process.
 * \returns a pointer to an int. The storage is not on the heap and must not be freed.
 */
static void* eNB_thread_tx( void* param )
{
  static int eNB_thread_tx_status[NUM_ENB_THREADS];
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  eNB_proc_t *proc = (eNB_proc_t*)param;
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  // set default return value
  eNB_thread_tx_status[proc->subframe] = 0;

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#ifdef RTAI
  RT_TASK *task;
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  char task_name[8];
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  sprintf(task_name,"TXC%dS%d",proc->CC_id,proc->subframe);
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  task = rt_task_init_schmod(nam2num(task_name), 0, 0, 0, SCHED_FIFO, 0xF);

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  if (task == NULL) {
    LOG_E(PHY,"[SCHED][eNB] Problem starting eNB_proc_TX thread_index %d (%s)!!!!\n",proc->subframe,task_name);
    return 0;
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  } else {
    LOG_I(PHY,"[SCHED][eNB] eNB TX thread CC %d SF %d started with id %p\n",
          proc->CC_id,
          proc->subframe,
          task);
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  }
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#else
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#ifdef LOWLATENCY
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  struct sched_attr attr;
  unsigned int flags = 0;

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  attr.size = sizeof(attr);
  attr.sched_flags = 0;
  attr.sched_nice = 0;
  attr.sched_priority = 0;
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  // This creates a 1ms reservation every 10ms period
  attr.sched_policy   = SCHED_DEADLINE;
  attr.sched_runtime  = 0.9 *  1000000; // each tx thread requires 1ms to finish its job
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  attr.sched_deadline = 1   *  1000000; // each tx thread will finish within 1ms
  attr.sched_period   = 1   * 10000000; // each tx thread has a period of 10ms from the starting point
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  if (sched_setattr(0, &attr, flags) < 0 ) {
    perror("[SCHED] eNB tx thread: sched_setattr failed\n");
    return &eNB_thread_tx_status[proc->subframe];
  }
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  LOG_I( HW, "[SCHED] eNB TX deadline thread %d(id %ld) started on CPU %d\n", proc->subframe, gettid(), sched_getcpu() );
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#else
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  LOG_I( HW, "[SCHED][eNB] TX thread %d started on CPU %d\n", proc->subframe, sched_getcpu() );
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#endif

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#endif

  mlockall(MCL_CURRENT | MCL_FUTURE);

#ifdef HARD_RT
  rt_make_hard_real_time();
#endif

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  while (!oai_exit) {
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    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_TX0+(2*proc->subframe), 0 );
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    if (pthread_mutex_lock(&proc->mutex_tx) != 0) {
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      LOG_E( PHY, "[SCHED][eNB] error locking mutex for eNB TX proc %d\n", proc->subframe );
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      exit_fun("nothing to add");
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      break;
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    }
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    while (proc->instance_cnt_tx < 0) {
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      // most of the time the thread is waiting here
      // proc->instance_cnt_tx is -1
      pthread_cond_wait( &proc->cond_tx, &proc->mutex_tx ); // this unlocks mutex_tx while waiting and then locks it again
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    }
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    if (pthread_mutex_unlock(&proc->mutex_tx) != 0) {
      LOG_E(PHY,"[SCHED][eNB] error unlocking mutex for eNB TX proc %d\n",proc->subframe);
      exit_fun("nothing to add");
      break;
    }
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    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_TX0+(2*proc->subframe), 1 );
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX_ENB, proc->frame_tx );
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    start_meas( &softmodem_stats_tx_sf[proc->subframe] );

    if (oai_exit) break;
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    if ((((PHY_vars_eNB_g[0][proc->CC_id]->lte_frame_parms.frame_type == TDD)&&
          (subframe_select(&PHY_vars_eNB_g[0][proc->CC_id]->lte_frame_parms,proc->subframe_tx)==SF_DL))||
         (PHY_vars_eNB_g[0][proc->CC_id]->lte_frame_parms.frame_type == FDD))) {
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      phy_procedures_eNB_TX( proc->subframe, PHY_vars_eNB_g[0][proc->CC_id], 0, no_relay, NULL );
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    }
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    if ((subframe_select(&PHY_vars_eNB_g[0][proc->CC_id]->lte_frame_parms,proc->subframe_tx) == SF_S)) {
      phy_procedures_eNB_TX( proc->subframe, PHY_vars_eNB_g[0][proc->CC_id], 0, no_relay, NULL );
    }
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    do_OFDM_mod_rt( proc->subframe_tx, PHY_vars_eNB_g[0][proc->CC_id] );
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    if (pthread_mutex_lock(&proc->mutex_tx) != 0) {
      LOG_E( PHY, "[SCHED][eNB] error locking mutex for eNB TX proc %d\n", proc->subframe );
      exit_fun("nothing to add");
      break;
    }
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    proc->instance_cnt_tx--;

    if (pthread_mutex_unlock(&proc->mutex_tx) != 0) {
      LOG_E( PHY, "[SCHED][eNB] error unlocking mutex for eNB TX proc %d\n", proc->subframe );
      exit_fun("nothing to add");
      break;
    }

    proc->frame_tx++;
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    if (proc->frame_tx==1024)
      proc->frame_tx=0;

  }

  stop_meas( &softmodem_stats_tx_sf[proc->subframe] );
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_TX0+(2*proc->subframe), 0 );
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#ifdef HARD_RT
  rt_make_soft_real_time();
#endif
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#ifdef DEBUG_THREADS
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  printf( "Exiting eNB thread TX %d\n", proc->subframe );
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#endif
  // clean task
#ifdef RTAI
  rt_task_delete(task);
#endif
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  eNB_thread_tx_status[proc->subframe] = 0;
  return &eNB_thread_tx_status[proc->subframe];
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}


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/*!
 * \brief The receive thread of eNB.
 * \ref NUM_ENB_THREADS threads of this type are active at the same time.
 * \param param is a \ref eNB_proc_t structure which contains the info what to process.
 * \returns a pointer to an int. The storage is not on the heap and must not be freed.
 */
static void* eNB_thread_rx( void* param )
{
  static int eNB_thread_rx_status[NUM_ENB_THREADS];

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  eNB_proc_t *proc = (eNB_proc_t*)param;
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  // set default return value
  eNB_thread_rx_status[proc->subframe] = 0;

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#ifdef RTAI
  RT_TASK *task;
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  char task_name[8];
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  sprintf(task_name,"RXC%1dS%1d",proc->CC_id,proc->subframe);
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  task = rt_task_init_schmod(nam2num(task_name), 0, 0, 0, SCHED_FIFO, 0xF);

  if (task==NULL) {
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    LOG_E(PHY,"[SCHED][eNB] Problem starting eNB_proc_RX thread_index %d (%s)!!!!\n",proc->subframe,task_name);
    return 0;
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  } else {
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    LOG_I(PHY,"[SCHED][eNB] eNB RX thread CC_id %d SF %d started with id %p\n", /*  on CPU %d*/
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          proc->CC_id,
          proc->subframe,
          task); /*,rtai_cpuid()*/
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  }
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#else
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#ifdef LOWLATENCY
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  struct sched_attr attr;
  unsigned int flags = 0;

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  attr.size = sizeof(attr);
  attr.sched_flags = 0;
  attr.sched_nice = 0;
  attr.sched_priority = 0;
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  /* This creates a 2ms reservation every 10ms period*/
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  attr.sched_policy = SCHED_DEADLINE;
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  attr.sched_runtime  = 0.9 *  1000000; // each rx thread must finish its job in the worst case in 2ms
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  attr.sched_deadline = 1   *  1000000; // each rx thread will finish within 2ms
  attr.sched_period   = 1   * 10000000; // each rx thread has a period of 10ms from the starting point
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  if (sched_setattr(0, &attr, flags) < 0 ) {
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    perror("[SCHED] eNB RX sched_setattr failed\n");
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    return &eNB_thread_rx_status[proc->subframe];
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  }
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  LOG_I( HW, "[SCHED] eNB RX deadline thread %d(id %ld) started on CPU %d\n", proc->subframe, gettid(), sched_getcpu() );
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#else
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  LOG_I( HW, "[SCHED][eNB] RX thread %d started on CPU %d\n", proc->subframe, sched_getcpu() );
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#endif
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#endif // RTAI
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  mlockall(MCL_CURRENT | MCL_FUTURE);

#ifdef HARD_RT
  rt_make_hard_real_time();
#endif

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  while (!oai_exit) {
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    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RX0+(2*proc->subframe), 0 );
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    if (pthread_mutex_lock(&proc->mutex_rx) != 0) {
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      LOG_E( PHY, "[SCHED][eNB] error locking mutex for eNB RX proc %d\n", proc->subframe );
      exit_fun( "error locking mutex" );
      break;
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    }

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    while (proc->instance_cnt_rx < 0) {
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      // most of the time the thread is waiting here
      // proc->instance_cnt_rx is -1
      pthread_cond_wait( &proc->cond_rx, &proc->mutex_rx ); // this unlocks mutex_rx while waiting and then locks it again
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    }
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    if (pthread_mutex_unlock(&proc->mutex_rx) != 0) {
      LOG_E( PHY, "[SCHED][eNB] error unlocking mutex for eNB RX proc %d\n", proc->subframe );
      exit_fun( "error unlocking mutex" );
      break;
    }

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    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RX0+(2*proc->subframe), 1 );
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX_ENB, proc->frame_rx );
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    start_meas( &softmodem_stats_rx_sf[proc->subframe] );
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    if (oai_exit) break;
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    if ((((PHY_vars_eNB_g[0][proc->CC_id]->lte_frame_parms.frame_type == TDD )&&(subframe_select(&PHY_vars_eNB_g[0][proc->CC_id]->lte_frame_parms,proc->subframe_rx)==SF_UL)) ||
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         (PHY_vars_eNB_g[0][proc->CC_id]->lte_frame_parms.frame_type == FDD))) {
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      phy_procedures_eNB_RX( proc->subframe, PHY_vars_eNB_g[0][proc->CC_id], 0, no_relay );
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    }
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    if ((subframe_select(&PHY_vars_eNB_g[0][proc->CC_id]->lte_frame_parms,proc->subframe_rx) == SF_S)) {
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      phy_procedures_eNB_S_RX( proc->subframe, PHY_vars_eNB_g[0][proc->CC_id], 0, no_relay );
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    }
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    if (pthread_mutex_lock(&proc->mutex_rx) != 0) {
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      LOG_E( PHY, "[SCHED][eNB] error locking mutex for eNB RX proc %d\n", proc->subframe );
      exit_fun( "error locking mutex" );
      break;
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    }
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    proc->instance_cnt_rx--;

    if (pthread_mutex_unlock(&proc->mutex_rx) != 0) {
      LOG_E( PHY, "[SCHED][eNB] error unlocking mutex for eNB RX proc %d\n", proc->subframe );
      exit_fun( "error unlocking mutex" );
      break;
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    }
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    proc->frame_rx++;
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    if (proc->frame_rx==1024)
      proc->frame_rx=0;
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  }
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  stop_meas( &softmodem_stats_rx_sf[proc->subframe] );
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RX0+(2*proc->subframe), 0 );
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#ifdef HARD_RT
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  rt_make_soft_real_time();
#endif

#ifdef DEBUG_THREADS
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  printf( "Exiting eNB thread RX %d\n", proc->subframe );
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#endif
  // clean task
#ifdef RTAI
  rt_task_delete(task);
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#endif

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  eNB_thread_rx_status[proc->subframe] = 0;
  return &eNB_thread_rx_status[proc->subframe];
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}



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void init_eNB_proc(void)
{
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  int i;
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  int CC_id;

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  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
    for (i=0; i<NUM_ENB_THREADS; i++) {
      // set the stack size
      pthread_attr_init( &attr_eNB_proc_tx[CC_id][i] );
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      if (pthread_attr_setstacksize( &attr_eNB_proc_tx[CC_id][i], PTHREAD_STACK_MIN ) != 0)
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        perror("[ENB_PROC_TX] setting thread stack size failed\n");

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      pthread_attr_init( &attr_eNB_proc_rx[CC_id][i] );
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      if (pthread_attr_setstacksize( &attr_eNB_proc_rx[CC_id][i], PTHREAD_STACK_MIN ) != 0)
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        perror("[ENB_PROC_RX] setting thread stack size failed\n");
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#ifndef LOWLATENCY
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      // set the kernel scheduling policy and priority
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      sched_param_eNB_proc_tx[CC_id][i].sched_priority = sched_get_priority_max(SCHED_FIFO)-1; //OPENAIR_THREAD_PRIORITY;
      pthread_attr_setschedparam  (&attr_eNB_proc_tx[CC_id][i], &sched_param_eNB_proc_tx[CC_id][i]);
      pthread_attr_setschedpolicy (&attr_eNB_proc_tx[CC_id][i], SCHED_FIFO);
      sched_param_eNB_proc_rx[CC_id][i].sched_priority = sched_get_priority_max(SCHED_FIFO)-1; //OPENAIR_THREAD_PRIORITY;
      pthread_attr_setschedparam  (&attr_eNB_proc_rx[CC_id][i], &sched_param_eNB_proc_rx[CC_id][i]);
      pthread_attr_setschedpolicy (&attr_eNB_proc_rx[CC_id][i], SCHED_FIFO);
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#endif

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      PHY_vars_eNB_g[0][CC_id]->proc[i].instance_cnt_tx = -1;
      PHY_vars_eNB_g[0][CC_id]->proc[i].instance_cnt_rx = -1;
      PHY_vars_eNB_g[0][CC_id]->proc[i].subframe = i;
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      PHY_vars_eNB_g[0][CC_id]->proc[i].CC_id = CC_id;
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      pthread_mutex_init( &PHY_vars_eNB_g[0][CC_id]->proc[i].mutex_tx, NULL);
      pthread_mutex_init( &PHY_vars_eNB_g[0][CC_id]->proc[i].mutex_rx, NULL);
      pthread_cond_init( &PHY_vars_eNB_g[0][CC_id]->proc[i].cond_tx, NULL);
      pthread_cond_init( &PHY_vars_eNB_g[0][CC_id]->proc[i].cond_rx, NULL);
      pthread_create( &PHY_vars_eNB_g[0][CC_id]->proc[i].pthread_tx, NULL, eNB_thread_tx, &PHY_vars_eNB_g[0][CC_id]->proc[i] );
      pthread_create( &PHY_vars_eNB_g[0][CC_id]->proc[i].pthread_rx, NULL, eNB_thread_rx, &PHY_vars_eNB_g[0][CC_id]->proc[i] );
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      char name[16];
      snprintf( name, sizeof(name), "TX %d", i );
      pthread_setname_np( PHY_vars_eNB_g[0][CC_id]->proc[i].pthread_tx, name );
      snprintf( name, sizeof(name), "RX %d", i );
      pthread_setname_np( PHY_vars_eNB_g[0][CC_id]->proc[i].pthread_rx, name );
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      PHY_vars_eNB_g[0][CC_id]->proc[i].frame_tx = 0;
      PHY_vars_eNB_g[0][CC_id]->proc[i].frame_rx = 0;
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#ifdef EXMIMO
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      PHY_vars_eNB_g[0][CC_id]->proc[i].subframe_rx = (i+9)%10;
      PHY_vars_eNB_g[0][CC_id]->proc[i].subframe_tx = (i+1)%10;
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#else
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      PHY_vars_eNB_g[0][CC_id]->proc[i].subframe_rx = i;
      PHY_vars_eNB_g[0][CC_id]->proc[i].subframe_tx = (i+2)%10;
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#endif
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    }
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#ifdef EXMIMO
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    // TX processes subframe + 1, RX subframe -1
    // Note this inialization is because the first process awoken for frame 0 is number 1 and so processes 9 and 0 have to start with frame 1
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    //PHY_vars_eNB_g[0][CC_id]->proc[0].frame_rx = 1023;
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    PHY_vars_eNB_g[0][CC_id]->proc[9].frame_tx = 1;
    PHY_vars_eNB_g[0][CC_id]->proc[0].frame_tx = 1;
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#else
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    // TX processes subframe +2, RX subframe
    // Note this inialization is because the first process awoken for frame 0 is number 1 and so processes 8,9 and 0 have to start with frame 1
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    //    PHY_vars_eNB_g[0][CC_id]->proc[7].frame_tx = 1;
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    PHY_vars_eNB_g[0][CC_id]->proc[8].frame_tx = 1;
    PHY_vars_eNB_g[0][CC_id]->proc[9].frame_tx = 1;
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    //    PHY_vars_eNB_g[0][CC_id]->proc[0].frame_tx = 1;
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#endif
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  }
}
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/*!
 * \brief Terminate eNB TX and RX threads.
 */
void kill_eNB_proc(void)
{
  int *status;
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  for (int CC_id=0; CC_id<MAX_NUM_CCs; CC_id++)
    for (int i=0; i<NUM_ENB_THREADS; i++) {
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#ifdef DEBUG_THREADS
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      printf( "Killing TX CC_id %d thread %d\n", CC_id, i );
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#endif
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      PHY_vars_eNB_g[0][CC_id]->proc[i].instance_cnt_tx = 0; // FIXME data race!
      pthread_cond_signal( &PHY_vars_eNB_g[0][CC_id]->proc[i].cond_tx );

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#ifdef DEBUG_THREADS
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      printf( "Joining eNB TX CC_id %d thread %d...\n", CC_id, i );
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#endif
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      int result = pthread_join( PHY_vars_eNB_g[0][CC_id]->proc[i].pthread_tx, (void**)&status );
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#ifdef DEBUG_THREADS
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      if (result != 0) {
        printf( "Error joining thread.\n" );
      } else {
        if (status) {
          printf( "status %d\n", *status );
        } else {
          printf( "The thread was killed. No status available.\n" );
        }
      }
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#else
      UNUSED(result)
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#endif
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#ifdef DEBUG_THREADS
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      printf( "Killing RX CC_id %d thread %d\n", CC_id, i );
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#endif
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      PHY_vars_eNB_g[0][CC_id]->proc[i].instance_cnt_rx = 0; // FIXME data race!
      pthread_cond_signal( &PHY_vars_eNB_g[0][CC_id]->proc[i].cond_rx );

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#ifdef DEBUG_THREADS
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      printf( "Joining eNB RX CC_id %d thread %d...\n", CC_id, i );
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#endif
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      result = pthread_join( PHY_vars_eNB_g[0][CC_id]->proc[i].pthread_rx, (void**)&status );

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#ifdef DEBUG_THREADS

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      if (result != 0) {
        printf( "Error joining thread.\n" );
      } else {
        if (status) {
          printf( "status %d\n", *status );
        } else {
          printf( "The thread was killed. No status available.\n" );
        }
      }
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#else
      UNUSED(result)
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#endif
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      pthread_mutex_destroy( &PHY_vars_eNB_g[0][CC_id]->proc[i].mutex_tx );
      pthread_mutex_destroy( &PHY_vars_eNB_g[0][CC_id]->proc[i].mutex_rx );
      pthread_cond_destroy( &PHY_vars_eNB_g[0][CC_id]->proc[i].cond_tx );
      pthread_cond_destroy( &PHY_vars_eNB_g[0][CC_id]->proc[i].cond_rx );
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    }
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}


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/*!
 * \brief This is the main eNB thread.
 * \param arg unused
 * \returns a pointer to an int. The storage is not on the heap and must not be freed.
 */
static void* eNB_thread( void* arg )
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{
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  UNUSED(arg);
  static int eNB_thread_status;
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  unsigned char slot;
1412
#ifdef EXMIMO
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  slot=0;
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  RTIME time_in;
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  volatile unsigned int *DAQ_MBOX = openair0_daq_cnt();
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  int mbox_target=0,mbox_current=0;
  int hw_slot,delay_cnt;
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  int diff;
  int ret;
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  int first_run=1;
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#else
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  // the USRP implementation operates on subframes, not slots
  // one subframe consists of one even and one odd slot
  slot = 1;
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  int spp;
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  int tx_launched = 0;
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  void *rxp[2]; // FIXME hard coded array size; indexed by lte_frame_parms.nb_antennas_rx
  void *txp[2]; // FIXME hard coded array size; indexed by lte_frame_parms.nb_antennas_tx
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  int hw_subframe = 0; // 0..NUM_ENB_THREADS-1 => 0..9
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  spp = openair0_cfg[0].samples_per_packet;
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  unsigned int rx_pos = 0;
  unsigned int tx_pos = spp*tx_delay;
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#endif
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  struct timespec trx_time0, trx_time1, trx_time2;
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#ifdef RTAI
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  RT_TASK* task = rt_task_init_schmod(nam2num("eNBmain"), 0, 0, 0, SCHED_FIFO, 0xF);
1441
#else
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#ifdef LOWLATENCY
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  struct sched_attr attr;
  unsigned int flags = 0;

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  attr.size = sizeof(attr);
  attr.sched_flags = 0;
  attr.sched_nice = 0;
  attr.sched_priority = 0;
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  /* This creates a .5 ms  reservation */
  attr.sched_policy = SCHED_DEADLINE;
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  attr.sched_runtime  = 0.1 * 1000000;
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  attr.sched_deadline = 0.5 * 1000000;
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  attr.sched_period   = 1.0 * 1000000;

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  /* pin the eNB main thread to CPU0*/
  /* if (pthread_setaffinity_np(pthread_self(), sizeof(mask),&mask) <0) {
     perror("[MAIN_ENB_THREAD] pthread_setaffinity_np failed\n");
     }*/
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  if (sched_setattr(0, &attr, flags) < 0 ) {
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    perror("[SCHED] main eNB thread: sched_setattr failed\n");
    exit_fun("Nothing to add");
  } else {
    LOG_I(HW,"[SCHED][eNB] eNB main deadline thread %ld started on CPU %d\n",
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          gettid(),sched_getcpu());
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  }
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#endif
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#endif

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  // stop early, if an exit is requested
  // FIXME really neccessary?
  if (oai_exit)
    goto eNB_thread_cleanup;

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#ifdef RTAI
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  printf( "[SCHED][eNB] Started eNB main thread (id %p)\n", task );
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#else
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  printf( "[SCHED][eNB] Started eNB main thread on CPU %d\n", sched_getcpu());
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#endif

#ifdef HARD_RT
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  rt_make_hard_real_time();
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#endif

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  printf("eNB_thread: mlockall in ...\n");
  mlockall(MCL_CURRENT | MCL_FUTURE);
  printf("eNB_thread: mlockall out ...\n");

  timing_info.time_min = 100000000ULL;
  timing_info.time_max = 0;
  timing_info.time_avg = 0;
  timing_info.n_samples = 0;
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  printf( "waiting for sync (eNB_thread)\n" );
  pthread_mutex_lock( &sync_mutex );
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  while (sync_var<0)
    pthread_cond_wait( &sync_cond, &sync_mutex );
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  pthread_mutex_unlock(&sync_mutex);
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  int frame = 0;
1507

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  while (!oai_exit) {
    start_meas( &softmodem_stats_mt );
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#ifdef EXMIMO
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    hw_slot = (((((volatile unsigned int *)DAQ_MBOX)[0]+1)%150)<<1)/15;
    //        LOG_D(HW,"eNB frame %d, time %llu: slot %d, hw_slot %d (mbox %d)\n",frame,rt_get_time_ns(),slot,hw_slot,((unsigned int *)DAQ_MBOX)[0]);
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    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_HW_SUBFRAME, hw_slot>>1);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_HW_FRAME, frame);
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    //this is the mbox counter where we should be
    mbox_target = mbox_bounds[slot];
    //this is the mbox counter where we are
    mbox_current = ((volatile unsigned int *)DAQ_MBOX)[0];
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    //this is the time we need to sleep in order to synchronize with the hw (in multiples of DAQ_PERIOD)
    if ((mbox_current>=135) && (mbox_target<15)) //handle the frame wrap-arround
      diff = 150-mbox_current+mbox_target;
    else if ((mbox_current<15) && (mbox_target>=135))
      diff = -150+mbox_target-mbox_current;
    else
      diff = mbox_target - mbox_current;

    //when we start the aquisition we want to start with slot 0, so we rather wait for the hardware than to advance the slot number (a positive diff will cause the programm to go into the second if clause rather than the first)
    if (first_run==1) {
      first_run=0;
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      if (diff<0)
        diff = diff +150;
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      LOG_I(HW,"eNB Frame %d, time %llu: slot %d, hw_slot %d, diff %d\n",frame, rt_get_time_ns(), slot, hw_slot, diff);
    }

    if (((slot%2==0) && (diff < (-14))) || ((slot%2==1) && (diff < (-7)))) {
      // at the eNB, even slots have double as much time since most of the processing is done here and almost nothing in odd slots
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      LOG_D(HW,"eNB Frame %d, time %llu: missed slot, proceeding with next one (slot %d, hw_slot %d, mbox_current %d, mbox_target %d, diff %d)\n",frame, rt_get_time_ns(), slot, hw_slot, mbox_current,
            mbox_target, diff);
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      slot++;
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      if (exit_missed_slots==1) {
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        stop_meas(&softmodem_stats_mt);
        exit_fun("[HW][eNB] missed slot");
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      } else {
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        num_missed_slots++;
        LOG_W(HW,"[eNB] just missed slot (total missed slots %ld)\n", num_missed_slots);
      }
    }
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    if (diff>8)
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      LOG_D(HW,"eNB Frame %d, time %llu: skipped slot, waiting for hw to catch up (slot %d, hw_slot %d, mbox_current %d, mbox_target %d, diff %d)\n",frame, rt_get_time_ns(), slot, hw_slot, mbox_current,
            mbox_target, diff);
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    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DAQ_MBOX, *DAQ_MBOX);
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DIFF, diff);
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    delay_cnt = 0;
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    while ((diff>0) && (!oai_exit)) {
      time_in = rt_get_time_ns();
      //LOG_D(HW,"eNB Frame %d delaycnt %d : hw_slot %d (%d), slot %d, (slot+1)*15=%d, diff %d, time %llu\n",frame,delay_cnt,hw_slot,((unsigned int *)DAQ_MBOX)[0],slot,(((slot+1)*15)>>1),diff,time_in);
      //LOG_D(HW,"eNB Frame %d, time %llu: sleeping for %llu (slot %d, hw_slot %d, diff %d, mbox %d, delay_cnt %d)\n", frame, time_in, diff*DAQ_PERIOD,slot,hw_slot,diff,((volatile unsigned int *)DAQ_MBOX)[0],delay_cnt);
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      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RT_SLEEP,1);
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      ret = rt_sleep_ns(diff*DAQ_PERIOD);
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      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RT_SLEEP,0);
      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DAQ_MBOX, *DAQ_MBOX);
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      if (ret)
        LOG_D(HW,"eNB Frame %d, time %llu: rt_sleep_ns returned %d\n",frame, time_in);
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      hw_slot = (((((volatile unsigned int *)DAQ_MBOX)[0]+1)%150)<<1)/15;
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      //LOG_D(HW,"eNB Frame %d : hw_slot %d, time %llu\n",frame,hw_slot,rt_get_time_ns());
      delay_cnt++;
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      if (delay_cnt == 10) {
        stop_meas(&softmodem_stats_mt);
        LOG_D(HW,"eNB Frame %d: HW stopped ... \n",frame);
        exit_fun("[HW][eNB] HW stopped");
      }
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      mbox_current = ((volatile unsigned int *)DAQ_MBOX)[0];
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      if ((mbox_current>=135) && (mbox_target<15)) //handle the frame wrap-arround
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        diff = 150-mbox_current+mbox_target;
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      else if ((mbox_current<15) && (mbox_target>=135))
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        diff = -150+mbox_target-mbox_current;
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      else
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        diff = mbox_target - mbox_current;
    }
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#else  // EXMIMO
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    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_HW_SUBFRAME, hw_subframe );
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_HW_FRAME, frame );
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    tx_launched = 0;
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    while (rx_pos < ((1+hw_subframe)*PHY_vars_eNB_g[0][0]->lte_frame_parms.samples_per_tti)) {
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      unsigned int rxs;
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#ifndef USRP_DEBUG
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      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 1 );
      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TXCNT, tx_pos );
      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RXCNT, rx_pos );
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1608
      clock_gettime( CLOCK_MONOTONIC, &trx_time0 );
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      // prepare rx buffer pointers
      for (int i=0; i<PHY_vars_eNB_g[0][0]->lte_frame_parms.nb_antennas_rx; i++)
        rxp[i] = (void*)&rxdata[i][rx_pos];
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      start_meas( &softmodem_stats_hw );
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1616
      openair0_timestamp timestamp;
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      rxs = openair0.trx_read_func(&openair0,
                                   &timestamp,
                                   rxp,
                                   spp,
                                   PHY_vars_eNB_g[0][0]->lte_frame_parms.nb_antennas_rx);
      stop_meas( &softmodem_stats_hw );
      clock_gettime( CLOCK_MONOTONIC, &trx_time1 );
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      if (rxs != spp)
        exit_fun( "problem receiving samples" );
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      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 0 );
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      // Transmit TX buffer based on timestamp from RX
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      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE, 1 );
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      // prepare tx buffer pointers
      for (int i=0; i<PHY_vars_eNB_g[0][0]->lte_frame_parms.nb_antennas_tx; i++)
        txp[i] = (void*)&txdata[i][tx_pos];

      if (frame > 50) {
        openair0.trx_write_func(&openair0,
                                (timestamp+(tx_delay*spp)-tx_forward_nsamps),
                                txp,
                                spp,
                                PHY_vars_eNB_g[0][0]->lte_frame_parms.nb_antennas_tx,
1643
                                1);
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      }

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      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, timestamp&0xffffffff );
      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST, (timestamp+(tx_delay*spp)-tx_forward_nsamps)&0xffffffff );
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      stop_meas( &softmodem_stats_mt );
      clock_gettime( CLOCK_MONOTONIC, &trx_time2 );

1652
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE,0);
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#else
      // USRP_DEBUG is active
      rt_sleep_ns(1000000);
#endif

      if ((tx_launched == 0) &&
          (rx_pos >= (((2*hw_subframe)+1)*PHY_vars_eNB_g[0][0]->lte_frame_parms.samples_per_tti>>1))) {
        tx_launched = 1;
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        for (int CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
          if (pthread_mutex_lock(&PHY_vars_eNB_g[0][CC_id]->proc[hw_subframe].mutex_tx) != 0) {
            LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB TX thread %d (IC %d)\n", hw_subframe, PHY_vars_eNB_g[0][CC_id]->proc[hw_subframe].instance_cnt_tx );
            exit_fun( "error locking mutex_tx" );
            break;
          }

          int cnt_tx = ++PHY_vars_eNB_g[0][CC_id]->proc[hw_subframe].instance_cnt_tx;

          pthread_mutex_unlock( &PHY_vars_eNB_g[0][CC_id]->proc[hw_subframe].mutex_tx );

          if (cnt_tx == 0) {
            // the thread was presumably waiting where it should and can now be woken up
            if (pthread_cond_signal(&PHY_vars_eNB_g[0][CC_id]->proc[hw_subframe].cond_tx) != 0) {
              LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB TX thread %d\n", hw_subframe );
              exit_fun( "ERROR pthread_cond_signal" );
              break;
            }
          } else {
            LOG_W( PHY,"[eNB] Frame %d, eNB TX thread %d busy!! (rx_cnt %u, cnt_tx %i)\n", PHY_vars_eNB_g[0][CC_id]->proc[hw_subframe].frame_tx, hw_subframe, rx_pos, cnt_tx );
            exit_fun( "TX thread busy" );
            break;
          }
        }
      }

      rx_pos += spp;
      tx_pos += spp;

      if (tx_pos >= samples_per_frame)
        tx_pos -= samples_per_frame;
    }

    if (rx_pos >= samples_per_frame)
      rx_pos -= samples_per_frame;

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#endif // USRP
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    if (oai_exit) break;
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    timing_info.time_last = timing_info.time_now;
    timing_info.time_now = rt_get_time_ns();

    if (timing_info.n_samples>0) {
      RTIME time_diff = timing_info.time_now - timing_info.time_last;
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      if (time_diff < timing_info.time_min)
        timing_info.time_min = time_diff;
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      if (time_diff > timing_info.time_max)
        timing_info.time_max = time_diff;
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      timing_info.time_avg += time_diff;
    }

    timing_info.n_samples++;

    if ((slot&1) == 1) {
1721
      // odd slot
1722
#ifdef EXMIMO
1723
      int sf = ((slot>>1)+1)%10;
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#else
1725
      int sf = hw_subframe;
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#endif
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      for (int CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
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#ifdef EXMIMO

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        if (pthread_mutex_lock(&PHY_vars_eNB_g[0][CC_id]->proc[sf].mutex_tx) != 0) {
          LOG_E(PHY,"[eNB] ERROR pthread_mutex_lock for eNB TX thread %d (IC %d)\n",sf,PHY_vars_eNB_g[0][CC_id]->proc[sf].instance_cnt_tx);
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        } else {
          //          LOG_I(PHY,"[eNB] Waking up eNB process %d (IC %d)\n",sf,PHY_vars_eNB_g[0][CC_id]->proc[sf].instance_cnt);
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          PHY_vars_eNB_g[0][CC_id]->proc[sf].instance_cnt_tx++;
          pthread_mutex_unlock(&PHY_vars_eNB_g[0][CC_id]->proc[sf].mutex_tx);
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          if (PHY_vars_eNB_g[0][CC_id]->proc[sf].instance_cnt_tx == 0) {
            if (pthread_cond_signal(&PHY_vars_eNB_g[0][CC_id]->proc[sf].cond_tx) != 0) {
              LOG_E(PHY,"[eNB] ERROR pthread_cond_signal for eNB TX thread %d\n",sf);
            }
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          } else {
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            LOG_W(PHY,"[eNB] Frame %d, eNB TX thread %d busy!!\n",PHY_vars_eNB_g[0][CC_id]->proc[sf].frame_tx,sf);
            exit_fun("nothing to add");
          }
        }
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#endif

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        if (pthread_mutex_lock(&PHY_vars_eNB_g[0][CC_id]->proc[sf].mutex_rx) != 0) {
          LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB RX thread %d (IC %d)\n", sf, PHY_vars_eNB_g[0][CC_id]->proc[sf].instance_cnt_rx );
          exit_fun( "error locking mutex_rx" );
          break;
        }
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        int cnt_rx = ++PHY_vars_eNB_g[0][CC_id]->proc[sf].instance_cnt_rx;
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        pthread_mutex_unlock( &PHY_vars_eNB_g[0][CC_id]->proc[sf].mutex_rx );
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        if (cnt_rx == 0) {
          // the thread was presumably waiting where it should and can now be woken up
          if (pthread_cond_signal(&PHY_vars_eNB_g[0][CC_id]->proc[sf].cond_rx) != 0) {
            LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB RX thread %d\n", sf );
            exit_fun( "ERROR pthread_cond_signal" );
            break;
          }
        } else {
          LOG_W( PHY, "[eNB] Frame %d, eNB RX thread %d busy!! instance_cnt %d CC_id %d\n", PHY_vars_eNB_g[0][CC_id]->proc[sf].frame_rx, sf, PHY_vars_eNB_g[0][CC_id]->proc[sf].instance_cnt_rx, CC_id );
          exit_fun( "RX thread busy" );
          break;
        }
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      }
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    }

#ifdef EXMIMO
    slot++;
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1778 1779 1780 1781
    if (slot == 20) {
      frame++;
      slot = 0;
    }
1782

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#else
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    hw_subframe++;
    slot += 2;
1786

1787
    if (hw_subframe == NUM_ENB_THREADS) {
1788
      // the radio frame is complete, start over
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      hw_subframe = 0;
      frame++;
      slot = 1;
    }
1793 1794

#endif
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1796
#if defined(ENABLE_ITTI)
1797
    itti_update_lte_time( frame, slot );
1798
#endif
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  }
1800 1801

eNB_thread_cleanup:
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#ifdef DEBUG_THREADS
1803
  printf( "eNB_thread: finished, ran %d times.\n", frame );
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#endif
1805

1806
#ifdef HARD_RT
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  rt_make_soft_real_time();
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#endif

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#ifdef DEBUG_THREADS
1811
  printf( "Exiting eNB_thread ..." );
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#endif
  // clean task
1814
#ifdef RTAI
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  rt_task_delete(task);
1816
#endif
1817 1818 1819

  eNB_thread_status = 0;
  return &eNB_thread_status;
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}
1821

1822

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1824

1825 1826
static void get_options (int argc, char **argv)
{
1827 1828 1829
  int c;
  //  char                          line[1000];
  //  int                           l;
1830
  int k,i;//,j,k;
1831
#if defined(OAI_USRP) || defined(CPRIGW)
1832
  int clock_src;
1833
#endif
1834 1835 1836 1837 1838
  int CC_id;
#ifdef EXMIMO
  char rxg_fname[256], line[1000];
  FILE *rxg_fd;
  int l;
1839
#endif
1840 1841 1842



1843 1844

  const Enb_properties_array_t *enb_properties;
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1846 1847 1848 1849 1850 1851 1852
  enum long_option_e {
    LONG_OPTION_START = 0x100, /* Start after regular single char options */
    LONG_OPTION_ULSCH_MAX_CONSECUTIVE_ERRORS,
    LONG_OPTION_CALIB_UE_RX,
    LONG_OPTION_CALIB_UE_RX_MED,
    LONG_OPTION_CALIB_UE_RX_BYP,
    LONG_OPTION_DEBUG_UE_PRACH,
1853 1854
    LONG_OPTION_NO_L2_CONNECT,
    LONG_OPTION_RXGAIN
1855
  };
1856

1857 1858 1859 1860 1861 1862 1863
  static const struct option long_options[] = {
    {"ulsch-max-errors",required_argument,  NULL, LONG_OPTION_ULSCH_MAX_CONSECUTIVE_ERRORS},
    {"calib-ue-rx",     required_argument,  NULL, LONG_OPTION_CALIB_UE_RX},
    {"calib-ue-rx-med", required_argument,  NULL, LONG_OPTION_CALIB_UE_RX_MED},
    {"calib-ue-rx-byp", required_argument,  NULL, LONG_OPTION_CALIB_UE_RX_BYP},
    {"debug-ue-prach",  no_argument,        NULL, LONG_OPTION_DEBUG_UE_PRACH},
    {"no-L2-connect",   no_argument,        NULL, LONG_OPTION_NO_L2_CONNECT},
1864
    {"ue_rxgain",   required_argument,  NULL, LONG_OPTION_RXGAIN},
1865 1866 1867
    {NULL, 0, NULL, 0}
  };

1868
  while ((c = getopt_long (argc, argv, "C:dK:g:F:G:qO:m:SUVRM:r:P:Ws:t:x:",long_options,NULL)) != -1) {
1869 1870 1871 1872 1873
    switch (c) {
    case LONG_OPTION_ULSCH_MAX_CONSECUTIVE_ERRORS:
      ULSCH_max_consecutive_errors = atoi(optarg);
      printf("Set ULSCH_max_consecutive_errors = %d\n",ULSCH_max_consecutive_errors);
      break;
1874

1875 1876 1877 1878 1879
    case LONG_OPTION_CALIB_UE_RX:
      mode = rx_calib_ue;
      rx_input_level_dBm = atoi(optarg);
      printf("Running with UE calibration on (LNA max), input level %d dBm\n",rx_input_level_dBm);
      break;
1880

1881 1882 1883 1884
    case LONG_OPTION_CALIB_UE_RX_MED:
      mode = rx_calib_ue_med;
      rx_input_level_dBm = atoi(optarg);
      printf("Running with UE calibration on (LNA med), input level %d dBm\n",rx_input_level_dBm);
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1885
      break;
1886

1887 1888 1889 1890 1891
    case LONG_OPTION_CALIB_UE_RX_BYP:
      mode = rx_calib_ue_byp;
      rx_input_level_dBm = atoi(optarg);
      printf("Running with UE calibration on (LNA byp), input level %d dBm\n",rx_input_level_dBm);
      break;
1892

1893 1894 1895
    case LONG_OPTION_DEBUG_UE_PRACH:
      mode = debug_prach;
      break;
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1897 1898 1899
    case LONG_OPTION_NO_L2_CONNECT:
      mode = no_L2_connect;
      break;
1900

1901
    case LONG_OPTION_RXGAIN:
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      for (i=0; i<4; i++)
        rx_gain[0][i] = atof(optarg);

1905
      break;
1906

1907 1908 1909
    case 'M':
#ifdef ETHERNET
      strcpy(rrh_eNB_ip,optarg);
1910
#endif
1911
      break;
1912

1913
    case 'C':
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      for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
        downlink_frequency[CC_id][0] = atof(optarg); // Use float to avoid issue with frequency over 2^31.
        downlink_frequency[CC_id][1] = downlink_frequency[CC_id][0];
        downlink_frequency[CC_id][2] = downlink_frequency[CC_id][0];
        downlink_frequency[CC_id][3] = downlink_frequency[CC_id][0];
        printf("Downlink for CC_id %d frequency set to %u\n", CC_id, downlink_frequency[CC_id][0]);
1920
      }
1921

1922 1923
      UE_scan=0;
      break;
1924

1925 1926 1927 1928
    case 'd':
#ifdef XFORMS
      do_forms=1;
      printf("Running with XFORMS!\n");
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1929
#endif
1930
      break;
1931

1932 1933 1934
    case 'K':
#if defined(ENABLE_ITTI)
      itti_dump_file = strdup(optarg);
1935
#else
1936
      printf("-K option is disabled when ENABLE_ITTI is not defined\n");
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1937
#endif
1938
      break;
1939

1940 1941 1942
    case 'O':
      conf_config_file_name = optarg;
      break;
1943

1944 1945 1946
    case 'U':
      UE_flag = 1;
      break;
1947

1948 1949 1950
    case 'm':
      target_dl_mcs = atoi (optarg);
      break;
1951

1952 1953 1954
    case 't':
      target_ul_mcs = atoi (optarg);
      break;
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1955
#ifdef OPENAIR2
1956

1957 1958 1959 1960 1961 1962 1963
    case 'W':
      opt_enabled=1;
      opt_type = OPT_WIRESHARK;
      strncpy(in_ip, "127.0.0.1", sizeof(in_ip));
      in_ip[sizeof(in_ip) - 1] = 0; // terminate string
      printf("Enabling OPT for wireshark for local interface");
      /*
1964 1965 1966
      if (optarg == NULL){
      in_ip[0] =NULL;
      printf("Enabling OPT for wireshark for local interface");
1967
      } else {
1968 1969 1970
      strncpy(in_ip, optarg, sizeof(in_ip));
      in_ip[sizeof(in_ip) - 1] = 0; // terminate string
      printf("Enabling OPT for wireshark with %s \n",in_ip);
1971 1972 1973
      }
      */
      break;
1974

1975
    case 'P':
1976 1977
      opt_type = OPT_PCAP;
      opt_enabled=1;
1978 1979 1980 1981 1982

      if (optarg == NULL) {
        strncpy(in_path, "/tmp/oai_opt.pcap", sizeof(in_path));
        in_path[sizeof(in_path) - 1] = 0; // terminate string
        printf("Enabling OPT for PCAP with the following path /tmp/oai_opt.pcap");
1983
      } else {
1984 1985 1986
        strncpy(in_path, optarg, sizeof(in_path));
        in_path[sizeof(in_path) - 1] = 0; // terminate string
        printf("Enabling OPT for PCAP  with the following file %s \n",in_path);
1987
      }
1988 1989

      break;
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1990
#endif
1991

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    case 'V':
      ouput_vcd = 1;
      break;
1995

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    case  'q':
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      opp_enabled = 1;
      break;
1999

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    case  'R' :
      online_log_messages =1;
      break;
2003

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2004
    case 'r':
2005
      UE_scan = 0;
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031
      for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
        switch(atoi(optarg)) {
        case 6:
          frame_parms[CC_id]->N_RB_DL=6;
          frame_parms[CC_id]->N_RB_UL=6;
          break;

        case 25:
          frame_parms[CC_id]->N_RB_DL=25;
          frame_parms[CC_id]->N_RB_UL=25;
          break;

        case 50:
          frame_parms[CC_id]->N_RB_DL=50;
          frame_parms[CC_id]->N_RB_UL=50;
          break;

        case 100:
          frame_parms[CC_id]->N_RB_DL=100;
          frame_parms[CC_id]->N_RB_UL=100;
          break;

        default:
          printf("Unknown N_RB_DL %d, switching to 25\n",atoi(optarg));
          break;
        }
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2032
      }
2033

2034
      break;
2035

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2036
    case 's':
2037
#if defined(OAI_USRP) || defined(CPRIGW)
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2038 2039

      clock_src = atoi(optarg);
2040

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2041
      if (clock_src == 0) {
2042 2043 2044 2045 2046
        //  char ref[128] = "internal";
        //strncpy(uhd_ref, ref, strlen(ref)+1);
      } else if (clock_src == 1) {
        //char ref[128] = "external";
        //strncpy(uhd_ref, ref, strlen(ref)+1);
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2047
      }
2048

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2049 2050 2051 2052
#else
      printf("Note: -s not defined for ExpressMIMO2\n");
#endif
      break;
2053

2054 2055 2056 2057
    case 'S':
      exit_missed_slots=0;
      printf("Skip exit for missed slots\n");
      break;
2058

2059
    case 'g':
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2060
      glog_level=atoi(optarg); // value between 1 - 9
2061
      break;
2062 2063

    case 'F':
2064
#ifdef EXMIMO
2065 2066
      sprintf(rxg_fname,"%srxg.lime",optarg);
      rxg_fd = fopen(rxg_fname,"r");
2067

2068
      if (rxg_fd) {
2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086
        printf("Loading RX Gain parameters from %s\n",rxg_fname);
        l=0;

        while (fgets(line, sizeof(line), rxg_fd)) {
          if ((strlen(line)==0) || (*line == '#')) continue; //ignore empty or comment lines
          else {
            if (l==0) sscanf(line,"%d %d %d %d",&rxg_max[0],&rxg_max[1],&rxg_max[2],&rxg_max[3]);

            if (l==1) sscanf(line,"%d %d %d %d",&rxg_med[0],&rxg_med[1],&rxg_med[2],&rxg_med[3]);

            if (l==2) sscanf(line,"%d %d %d %d",&rxg_byp[0],&rxg_byp[1],&rxg_byp[2],&rxg_byp[3]);

            l++;
          }
        }
      } else
        printf("%s not found, running with defaults\n",rxg_fname);

2087
#endif
2088
      break;
2089

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    case 'G':
      glog_verbosity=atoi(optarg);// value from 0, 0x5, 0x15, 0x35, 0x75
      break;
2093

2094 2095
    case 'x':
      transmission_mode = atoi(optarg);
2096

2097
      if (transmission_mode > 2) {
2098 2099
        printf("Transmission mode > 2 (%d) not supported for the moment\n",transmission_mode);
        exit(-1);
2100
      }
2101

2102
      break;
2103

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    default:
      break;
2106 2107
    }
  }
2108

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2109 2110
  if (UE_flag == 0)
    AssertFatal(conf_config_file_name != NULL,"Please provide a configuration file\n");
2111 2112


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2113
  if ((UE_flag == 0) && (conf_config_file_name != NULL)) {
2114
    int i,j;
2115

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2116
    NB_eNB_INST = 1;
2117

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    /* Read eNB configuration file */
    enb_properties = enb_config_init(conf_config_file_name);
2120

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2121
    AssertFatal (NB_eNB_INST <= enb_properties->number,
2122 2123
                 "Number of eNB is greater than eNB defined in configuration file %s (%d/%d)!",
                 conf_config_file_name, NB_eNB_INST, enb_properties->number);
2124

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2125
    /* Update some simulation parameters */
2126
    for (i=0; i < enb_properties->number; i++) {
2127
      AssertFatal (MAX_NUM_CCs == enb_properties->properties[i]->nb_cc,
2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144
                   "lte-softmodem compiled with MAX_NUM_CCs=%d, but only %d CCs configured for eNB %d!",
                   MAX_NUM_CCs, enb_properties->properties[i]->nb_cc, i);

      for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
        frame_parms[CC_id]->frame_type =       enb_properties->properties[i]->frame_type[CC_id];
        frame_parms[CC_id]->tdd_config =       enb_properties->properties[i]->tdd_config[CC_id];
        frame_parms[CC_id]->tdd_config_S =     enb_properties->properties[i]->tdd_config_s[CC_id];
        frame_parms[CC_id]->Ncp =              enb_properties->properties[i]->prefix_type[CC_id];

        //for (j=0; j < enb_properties->properties[i]->nb_cc; j++ ){
        frame_parms[CC_id]->Nid_cell            =  enb_properties->properties[i]->Nid_cell[CC_id];
        frame_parms[CC_id]->N_RB_DL             =  enb_properties->properties[i]->N_RB_DL[CC_id];
        frame_parms[CC_id]->N_RB_UL             =  enb_properties->properties[i]->N_RB_DL[CC_id];
        frame_parms[CC_id]->nb_antennas_tx      =  enb_properties->properties[i]->nb_antennas_tx[CC_id];
        frame_parms[CC_id]->nb_antennas_tx_eNB  =  enb_properties->properties[i]->nb_antennas_tx[CC_id];
        frame_parms[CC_id]->nb_antennas_rx      =  enb_properties->properties[i]->nb_antennas_rx[CC_id];
        //} // j
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2145 2146
      }

2147

2148
#ifdef OPENAIR2
2149

2150 2151 2152
      init_all_otg(0);
      g_otg->seed = 0;
      init_seeds(g_otg->seed);
2153 2154 2155 2156 2157 2158 2159 2160 2161 2162

      for (k=0; k<enb_properties->properties[i]->num_otg_elements; k++) {
        j=enb_properties->properties[i]->otg_ue_id[k]; // ue_id
        g_otg->application_idx[i][j] = 1;
        //g_otg->packet_gen_type=SUBSTRACT_STRING;
        g_otg->background[i][j][0] =enb_properties->properties[i]->otg_bg_traffic[k];
        g_otg->application_type[i][j][0] =enb_properties->properties[i]->otg_app_type[k];// BCBR; //MCBR, BCBR

        printf("[OTG] configuring traffic type %d for  eNB %d UE %d (Background traffic is %s)\n",
               g_otg->application_type[i][j][0], i, j,(g_otg->background[i][j][0]==1)?"Enabled":"Disabled");
2163
      }
2164

2165
      init_predef_traffic(enb_properties->properties[i]->num_otg_elements, 1);
2166

2167
#endif
2168

2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182
      glog_level                     = enb_properties->properties[i]->glog_level;
      glog_verbosity                 = enb_properties->properties[i]->glog_verbosity;
      hw_log_level                   = enb_properties->properties[i]->hw_log_level;
      hw_log_verbosity               = enb_properties->properties[i]->hw_log_verbosity ;
      phy_log_level                  = enb_properties->properties[i]->phy_log_level;
      phy_log_verbosity              = enb_properties->properties[i]->phy_log_verbosity;
      mac_log_level                  = enb_properties->properties[i]->mac_log_level;
      mac_log_verbosity              = enb_properties->properties[i]->mac_log_verbosity;
      rlc_log_level                  = enb_properties->properties[i]->rlc_log_level;
      rlc_log_verbosity              = enb_properties->properties[i]->rlc_log_verbosity;
      pdcp_log_level                 = enb_properties->properties[i]->pdcp_log_level;
      pdcp_log_verbosity             = enb_properties->properties[i]->pdcp_log_verbosity;
      rrc_log_level                  = enb_properties->properties[i]->rrc_log_level;
      rrc_log_verbosity              = enb_properties->properties[i]->rrc_log_verbosity;
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# if defined(ENABLE_USE_MME)
      gtpu_log_level                 = enb_properties->properties[i]->gtpu_log_level;
      gtpu_log_verbosity             = enb_properties->properties[i]->gtpu_log_verbosity;
      udp_log_level                  = enb_properties->properties[i]->udp_log_level;
      udp_log_verbosity              = enb_properties->properties[i]->udp_log_verbosity;
#endif
2189 2190 2191
#if defined (ENABLE_SECURITY)
      osa_log_level                  = enb_properties->properties[i]->osa_log_level;
      osa_log_verbosity              = enb_properties->properties[i]->osa_log_verbosity;
2192
#endif
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2194
      // adjust the log
2195
      for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
2196 2197 2198 2199 2200 2201 2202 2203 2204 2205
        for (k = 0 ; k < 4; k++) {
          downlink_frequency[CC_id][k]      =       enb_properties->properties[i]->downlink_frequency[CC_id];
          uplink_frequency_offset[CC_id][k] =  enb_properties->properties[i]->uplink_frequency_offset[CC_id];
          rx_gain[CC_id][k]                 =  (double)enb_properties->properties[i]->rx_gain[CC_id];
          tx_gain[CC_id][k]                 =  (double)enb_properties->properties[i]->tx_gain[CC_id];
        }

        printf("Downlink frequency/ uplink offset of CC_id %d set to %ju/%d\n", CC_id,
               enb_properties->properties[i]->downlink_frequency[CC_id],
               enb_properties->properties[i]->uplink_frequency_offset[CC_id]);
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2206
      } // CC_id
2207
    }// i
2208
  } else if ((UE_flag == 1) && (conf_config_file_name != NULL)) {
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    // Here the configuration file is the XER encoded UE capabilities
    // Read it in and store in asn1c data structures
    strcpy(uecap_xer,conf_config_file_name);
    uecap_xer_in=1;
  }
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2215
}
2216

2217 2218
int main( int argc, char **argv )
{
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2219
  int i,aa,card;
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2220
#if defined (XFORMS) || defined (EMOS) || defined (EXMIMO)
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  void *status;
2222
#endif
2223

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  int CC_id;
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  uint16_t Nid_cell = 0;
2226
  uint8_t  cooperation_flag=0,  abstraction_flag=0;
2227
#ifndef OPENAIR2
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  uint8_t beta_ACK=0,beta_RI=0,beta_CQI=2;
2229 2230 2231
#endif

#ifdef ENABLE_TCXO
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  unsigned int tcxo = 114;
2233 2234
#endif

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#if defined (XFORMS)
2236 2237
  int ret;
#endif
2238
#if defined (EMOS) || (! defined (RTAI))
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  int error_code;
2240
#endif
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2242 2243 2244 2245 2246
#ifdef DEBUG_CONSOLE
  setvbuf(stdout, NULL, _IONBF, 0);
  setvbuf(stderr, NULL, _IONBF, 0);
#endif

2247 2248 2249
  PHY_VARS_UE *UE[MAX_NUM_CCs];

  mode = normal_txrx;
2250
  memset(&openair0_cfg[0],0,sizeof(openair0_config_t)*MAX_CARDS);
2251

2252
  memset(tx_max_power,0,sizeof(int)*MAX_NUM_CCs);
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  set_latency_target();
2254

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2256

2257
  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
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    frame_parms[CC_id] = (LTE_DL_FRAME_PARMS*) malloc(sizeof(LTE_DL_FRAME_PARMS));
    /* Set some default values that may be overwritten while reading options */
2260
    frame_parms[CC_id]->frame_type         = FDD; /* TDD */
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    frame_parms[CC_id]->tdd_config          = 3;
    frame_parms[CC_id]->tdd_config_S        = 0;
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    frame_parms[CC_id]->N_RB_DL             = 100;
    frame_parms[CC_id]->N_RB_UL             = 100;
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    frame_parms[CC_id]->Ncp                 = NORMAL;
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    frame_parms[CC_id]->Ncp_UL              = NORMAL;
    frame_parms[CC_id]->Nid_cell            = Nid_cell;
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    frame_parms[CC_id]->num_MBSFN_config    = 0;
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    frame_parms[CC_id]->nb_antennas_tx_eNB  = 1;
    frame_parms[CC_id]->nb_antennas_tx      = 1;
    frame_parms[CC_id]->nb_antennas_rx      = 1;
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  }
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  // initialize the log (see log.h for details)
  logInit();
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  //randominit (0);
  set_taus_seed (0);
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  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
    downlink_frequency[CC_id][0] = 2680000000; // Use float to avoid issue with frequency over 2^31.
    downlink_frequency[CC_id][1] = downlink_frequency[CC_id][0];
    downlink_frequency[CC_id][2] = downlink_frequency[CC_id][0];
    downlink_frequency[CC_id][3] = downlink_frequency[CC_id][0];
    printf("Downlink for CC_id %d frequency set to %u\n", CC_id, downlink_frequency[CC_id][0]);
  }

2289
  get_options (argc, argv); //Command-line options
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  set_glog(glog_level, glog_verbosity);

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  if (UE_flag==1) {
    printf("configuring for UE\n");
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2296
    set_comp_log(HW,      LOG_DEBUG,  LOG_HIGH, 1);
2297
#ifdef OPENAIR2
2298
    set_comp_log(PHY,     LOG_DEBUG,   LOG_HIGH, 1);
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#else
2300
    set_comp_log(PHY,     LOG_INFO,   LOG_HIGH, 1);
2301
#endif
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    set_comp_log(MAC,     LOG_INFO,   LOG_HIGH, 1);
    set_comp_log(RLC,     LOG_INFO,   LOG_HIGH, 1);
    set_comp_log(PDCP,    LOG_INFO,   LOG_HIGH, 1);
    set_comp_log(OTG,     LOG_INFO,   LOG_HIGH, 1);
    set_comp_log(RRC,     LOG_INFO,   LOG_HIGH, 1);
2307
#if defined(ENABLE_ITTI)
2308
    set_comp_log(EMU,     LOG_INFO,   LOG_MED, 1);
2309
# if defined(ENABLE_USE_MME)
2310
    set_comp_log(NAS,     LOG_INFO,   LOG_HIGH, 1);
2311 2312
# endif
#endif
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  } else {
    printf("configuring for eNB\n");
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    set_comp_log(HW,      hw_log_level, hw_log_verbosity, 1);
2317
#ifdef OPENAIR2
2318 2319 2320 2321 2322
    set_comp_log(PHY,     phy_log_level,   phy_log_verbosity, 1);

    if (opt_enabled == 1 )
      set_comp_log(OPT,   opt_log_level,      opt_log_verbosity, 1);

2323
#else
2324
    set_comp_log(PHY,     LOG_INFO,   LOG_HIGH, 1);
2325
#endif
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    set_comp_log(MAC,     mac_log_level,  mac_log_verbosity, 1);
    set_comp_log(RLC,     rlc_log_level,   rlc_log_verbosity, 1);
    set_comp_log(PDCP,    pdcp_log_level,  pdcp_log_verbosity, 1);
    set_comp_log(RRC,     rrc_log_level,  rrc_log_verbosity, 1);
2330
#if defined(ENABLE_ITTI)
2331
    set_comp_log(EMU,     LOG_INFO,   LOG_MED, 1);
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# if defined(ENABLE_USE_MME)
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    set_comp_log(UDP_,    udp_log_level,   udp_log_verbosity, 1);
    set_comp_log(GTPU,    gtpu_log_level,   gtpu_log_verbosity, 1);
    set_comp_log(S1AP,    LOG_DEBUG,   LOG_HIGH, 1);
    set_comp_log(SCTP,    LOG_INFO,   LOG_HIGH, 1);
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# endif
2338
#if defined(ENABLE_SECURITY)
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    set_comp_log(OSA,    osa_log_level,   osa_log_verbosity, 1);
2340
#endif
2341
#endif
2342
#ifdef LOCALIZATION
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    set_comp_log(LOCALIZE, LOG_DEBUG, LOG_LOW, 1);
    set_component_filelog(LOCALIZE);
#endif
    set_comp_log(ENB_APP, LOG_INFO, LOG_HIGH, 1);
    set_comp_log(OTG,     LOG_INFO,   LOG_HIGH, 1);

    if (online_log_messages == 1) {
      set_component_filelog(RRC);
      set_component_filelog(PDCP);
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    }
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  }
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  if (ouput_vcd) {
    if (UE_flag==1)
2357
      VCD_SIGNAL_DUMPER_INIT("/tmp/openair_dump_UE.vcd");
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    else
2359
      VCD_SIGNAL_DUMPER_INIT("/tmp/openair_dump_eNB.vcd");
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  }
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2362 2363
  if (opp_enabled ==1)
    reset_opp_meas();
2364

2365
#if defined(ENABLE_ITTI)
2366

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  if (UE_flag == 1) {
    log_set_instance_type (LOG_INSTANCE_UE);
2369
  } else {
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    log_set_instance_type (LOG_INSTANCE_ENB);
  }
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  itti_init(TASK_MAX, THREAD_MAX, MESSAGES_ID_MAX, tasks_info, messages_info, messages_definition_xml, itti_dump_file);
2374
#endif
2375
#ifdef OPENAIR2
2376

2377 2378
  if (opt_type != OPT_NONE) {
    radio_type_t radio_type;
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2380 2381
    if (frame_parms[0]->frame_type == FDD)
      radio_type = RADIO_TYPE_FDD;
2382
    else
2383
      radio_type = RADIO_TYPE_TDD;
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2385 2386 2387
    if (init_opt(in_path, in_ip, NULL, radio_type) == -1)
      LOG_E(OPT,"failed to run OPT \n");
  }
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2389
#endif
2390
#ifdef NAS_NETLINK
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  netlink_init();
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#endif

2394
#if !defined(ENABLE_ITTI)
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  // to make a graceful exit when ctrl-c is pressed
  signal(SIGSEGV, signal_handler);
  signal(SIGINT, signal_handler);
2398
#endif
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#ifndef RTAI
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  check_clock();
#endif

  // init the parameters
2405
  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
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    frame_parms[CC_id]->nushift            = 0;
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    if (UE_flag==0) {

    } else {
      //UE_flag==1
      frame_parms[CC_id]->nb_antennas_tx     = 1;
      frame_parms[CC_id]->nb_antennas_rx     = 1;
      frame_parms[CC_id]->nb_antennas_tx_eNB = (transmission_mode == 1) ? 1 : 2; //initial value overwritten by initial sync later
    }

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    frame_parms[CC_id]->mode1_flag         = (transmission_mode == 1) ? 1 : 0;
    frame_parms[CC_id]->phich_config_common.phich_resource = oneSixth;
    frame_parms[CC_id]->phich_config_common.phich_duration = normal;
    // UL RS Config
    frame_parms[CC_id]->pusch_config_common.ul_ReferenceSignalsPUSCH.cyclicShift = 0;//n_DMRS1 set to 0
    frame_parms[CC_id]->pusch_config_common.ul_ReferenceSignalsPUSCH.groupHoppingEnabled = 0;
    frame_parms[CC_id]->pusch_config_common.ul_ReferenceSignalsPUSCH.sequenceHoppingEnabled = 0;
    frame_parms[CC_id]->pusch_config_common.ul_ReferenceSignalsPUSCH.groupAssignmentPUSCH = 0;
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    init_ul_hopping(frame_parms[CC_id]);
    init_frame_parms(frame_parms[CC_id],1);
2427
    phy_init_top(frame_parms[CC_id]);
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  }

  phy_init_lte_top(frame_parms[0]);

2432
  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
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    //init prach for openair1 test
2434
    frame_parms[CC_id]->prach_config_common.rootSequenceIndex=22;
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    frame_parms[CC_id]->prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig=1;
2436
    frame_parms[CC_id]->prach_config_common.prach_ConfigInfo.prach_ConfigIndex=0;
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    frame_parms[CC_id]->prach_config_common.prach_ConfigInfo.highSpeedFlag=0;
    frame_parms[CC_id]->prach_config_common.prach_ConfigInfo.prach_FreqOffset=0;
    // prach_fmt = get_prach_fmt(frame_parms->prach_config_common.prach_ConfigInfo.prach_ConfigIndex, frame_parms->frame_type);
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    // N_ZC = (prach_fmt <4)?839:139;
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  }
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  if (UE_flag==1) {
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    NB_UE_INST=1;
    NB_INST=1;

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    PHY_vars_UE_g = malloc(sizeof(PHY_VARS_UE**));
    PHY_vars_UE_g[0] = malloc(sizeof(PHY_VARS_UE*)*MAX_NUM_CCs);
2449 2450

    for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
2451 2452 2453 2454

      PHY_vars_UE_g[0][CC_id] = init_lte_UE(frame_parms[CC_id], 0,abstraction_flag,transmission_mode);
      UE[CC_id] = PHY_vars_UE_g[0][CC_id];
      printf("PHY_vars_UE_g[0][%d] = %p\n",CC_id,UE[CC_id]);
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#ifndef OPENAIR2
2456 2457 2458 2459 2460 2461 2462 2463 2464

      for (i=0; i<NUMBER_OF_CONNECTED_eNB_MAX; i++) {
        UE[CC_id]->pusch_config_dedicated[i].betaOffset_ACK_Index = beta_ACK;
        UE[CC_id]->pusch_config_dedicated[i].betaOffset_RI_Index  = beta_RI;
        UE[CC_id]->pusch_config_dedicated[i].betaOffset_CQI_Index = beta_CQI;

        UE[CC_id]->scheduling_request_config[i].sr_PUCCH_ResourceIndex = 0;
        UE[CC_id]->scheduling_request_config[i].sr_ConfigIndex = 7+(0%3);
        UE[CC_id]->scheduling_request_config[i].dsr_TransMax = sr_n4;
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      }
2466

2467
#endif
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      UE[CC_id]->UE_scan = UE_scan;
      UE[CC_id]->mode    = mode;

      compute_prach_seq(&UE[CC_id]->lte_frame_parms.prach_config_common,
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                        UE[CC_id]->lte_frame_parms.frame_type,
                        UE[CC_id]->X_u);

2477
      UE[CC_id]->lte_ue_pdcch_vars[0]->crnti = 0x1234;
2478
#ifndef OPENAIR2
2479
      UE[CC_id]->lte_ue_pdcch_vars[0]->crnti = 0x1235;
2480
#endif
2481

2482
#ifdef EXMIMO
2483

2484 2485 2486 2487
      for (i=0; i<4; i++) {
        UE[CC_id]->rx_gain_max[i] = rxg_max[i];
        UE[CC_id]->rx_gain_med[i] = rxg_med[i];
        UE[CC_id]->rx_gain_byp[i] = rxg_byp[i];
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      }
2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507

      if ((UE[0]->mode == normal_txrx) ||
          (UE[0]->mode == rx_calib_ue) ||
          (UE[0]->mode == no_L2_connect) ||
          (UE[0]->mode == debug_prach)) {
        for (i=0; i<4; i++)
          rx_gain_mode[CC_id][i] = max_gain;

        UE[CC_id]->rx_total_gain_dB =  UE[CC_id]->rx_gain_max[0] + (int)rx_gain[CC_id][0] - 30; //-30 because it was calibrated with a 30dB gain
      } else if ((mode == rx_calib_ue_med)) {
        for (i=0; i<4; i++)
          rx_gain_mode[CC_id][i] =  med_gain;

        UE[CC_id]->rx_total_gain_dB =  UE[CC_id]->rx_gain_med[0]  + (int)rx_gain[CC_id][0] - 30; //-30 because it was calibrated with a 30dB gain;
      } else if ((mode == rx_calib_ue_byp)) {
        for (i=0; i<4; i++)
          rx_gain_mode[CC_id][i] =  byp_gain;

        UE[CC_id]->rx_total_gain_dB =  UE[CC_id]->rx_gain_byp[0]  + (int)rx_gain[CC_id][0] - 30; //-30 because it was calibrated with a 30dB gain;
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2508
      }
2509

2510
#else
2511
      UE[CC_id]->rx_total_gain_dB =  (int)rx_gain[CC_id][0];
2512
#endif
2513

2514
      UE[CC_id]->tx_power_max_dBm = tx_max_power[CC_id];
2515

2516 2517


2518
#ifdef EXMIMO
2519

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2520
      //N_TA_offset
2521
      if (UE[CC_id]->lte_frame_parms.frame_type == TDD) {
2522 2523 2524 2525 2526 2527 2528 2529
        if (UE[CC_id]->lte_frame_parms.N_RB_DL == 100)
          UE[CC_id]->N_TA_offset = 624;
        else if (UE[CC_id]->lte_frame_parms.N_RB_DL == 50)
          UE[CC_id]->N_TA_offset = 624/2;
        else if (UE[CC_id]->lte_frame_parms.N_RB_DL == 25)
          UE[CC_id]->N_TA_offset = 624/4;
      } else {
        UE[CC_id]->N_TA_offset = 0;
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      }
2531

2532
#else
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      //already taken care of in lte-softmodem
2534
      UE[CC_id]->N_TA_offset = 0;
2535
#endif
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    }
2537

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    openair_daq_vars.manual_timing_advance = 0;
    openair_daq_vars.rx_gain_mode = DAQ_AGC_ON;
    openair_daq_vars.auto_freq_correction = 0;
    openair_daq_vars.use_ia_receiver = 0;
2542 2543 2544



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2545
    //  printf("tx_max_power = %d -> amp %d\n",tx_max_power,get_tx_amp(tx_max_power,tx_max_power));
2546 2547 2548 2549 2550 2551 2552 2553 2554
  } else {
    //this is eNB
    PHY_vars_eNB_g = malloc(sizeof(PHY_VARS_eNB**));
    PHY_vars_eNB_g[0] = malloc(sizeof(PHY_VARS_eNB*));

    for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
      PHY_vars_eNB_g[0][CC_id] = init_lte_eNB(frame_parms[CC_id],0,Nid_cell,cooperation_flag,transmission_mode,abstraction_flag);
      PHY_vars_eNB_g[0][CC_id]->CC_id = CC_id;

2555
#ifndef OPENAIR2
2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571

      for (i=0; i<NUMBER_OF_UE_MAX; i++) {
        PHY_vars_eNB_g[0][CC_id]->pusch_config_dedicated[i].betaOffset_ACK_Index = beta_ACK;
        PHY_vars_eNB_g[0][CC_id]->pusch_config_dedicated[i].betaOffset_RI_Index  = beta_RI;
        PHY_vars_eNB_g[0][CC_id]->pusch_config_dedicated[i].betaOffset_CQI_Index = beta_CQI;

        PHY_vars_eNB_g[0][CC_id]->scheduling_request_config[i].sr_PUCCH_ResourceIndex = i;
        PHY_vars_eNB_g[0][CC_id]->scheduling_request_config[i].sr_ConfigIndex = 7+(i%3);
        PHY_vars_eNB_g[0][CC_id]->scheduling_request_config[i].dsr_TransMax = sr_n4;
      }

#endif

      compute_prach_seq(&PHY_vars_eNB_g[0][CC_id]->lte_frame_parms.prach_config_common,
                        PHY_vars_eNB_g[0][CC_id]->lte_frame_parms.frame_type,
                        PHY_vars_eNB_g[0][CC_id]->X_u);
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2573
#ifndef EXMIMO
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2575
      PHY_vars_eNB_g[0][CC_id]->rx_total_gain_eNB_dB = (int)rx_gain[CC_id][0];
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2577
#else
2578 2579 2580
      PHY_vars_eNB_g[0][CC_id]->rx_total_gain_eNB_dB =  rxg_max[0] + (int)rx_gain[CC_id][0] - 30; //was measured at rxgain=30;

      printf("Setting RX total gain to %d\n",PHY_vars_eNB_g[0][CC_id]->rx_total_gain_eNB_dB);
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2582 2583 2584
      // set eNB to max gain
      for (i=0; i<4; i++)
        rx_gain_mode[CC_id][i] = max_gain;
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2586
#endif
2587

2588
#ifdef EXMIMO
2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599

      //N_TA_offset
      if (PHY_vars_eNB_g[0][CC_id]->lte_frame_parms.frame_type == TDD) {
        if (PHY_vars_eNB_g[0][CC_id]->lte_frame_parms.N_RB_DL == 100)
          PHY_vars_eNB_g[0][CC_id]->N_TA_offset = 624;
        else if (PHY_vars_eNB_g[0][CC_id]->lte_frame_parms.N_RB_DL == 50)
          PHY_vars_eNB_g[0][CC_id]->N_TA_offset = 624/2;
        else if (PHY_vars_eNB_g[0][CC_id]->lte_frame_parms.N_RB_DL == 25)
          PHY_vars_eNB_g[0][CC_id]->N_TA_offset = 624/4;
      } else {
        PHY_vars_eNB_g[0][CC_id]->N_TA_offset = 0;
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      }
2601

2602 2603 2604 2605
#else
      //already taken care of in lte-softmodem
      PHY_vars_eNB_g[0][CC_id]->N_TA_offset = 0;
#endif
2606

2607
    }
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    NB_eNB_INST=1;
    NB_INST=1;

    openair_daq_vars.ue_dl_rb_alloc=0x1fff;
    openair_daq_vars.target_ue_dl_mcs=target_dl_mcs;
    openair_daq_vars.ue_ul_nb_rb=6;
    openair_daq_vars.target_ue_ul_mcs=target_ul_mcs;

  }
2619

2620

2621

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  dump_frame_parms(frame_parms[0]);
2623

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  if(frame_parms[0]->N_RB_DL == 100) {
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    sample_rate = 30.72e6;
2626
#ifndef EXMIMO
2627
    openair0_cfg[0].samples_per_packet = 2048;
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    samples_per_frame = 307200;
    // from usrp_time_offset
    tx_forward_nsamps = 175;
2631
    tx_delay = 8;
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#endif
2633
  } else if(frame_parms[0]->N_RB_DL == 50) {
2634
    sample_rate = 15.36e6;
2635
#ifndef EXMIMO
2636
    openair0_cfg[0].samples_per_packet = 2048;
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    samples_per_frame = 153600;
    tx_forward_nsamps = 95;
2639
    tx_delay = 5;
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#endif
2641
  } else if (frame_parms[0]->N_RB_DL == 25) {
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    sample_rate = 7.68e6;
2643
#ifndef EXMIMO
2644
    openair0_cfg[0].samples_per_packet = 1024;
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    samples_per_frame = 76800;
    tx_forward_nsamps = 70;
2647
    tx_delay = 6;
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#endif
2649
  } else if (frame_parms[0]->N_RB_DL == 6) {
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    sample_rate = 1.92e6;
#ifndef EXMIMO
2652
    openair0_cfg[0].samples_per_packet = 256;
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    samples_per_frame = 19200;
    tx_forward_nsamps = 40;
2655
    tx_delay = 8;
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#endif
  }
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#ifdef ETHERNET
2660

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2661
  if (frame_parms[0]->N_RB_DL == 6) openair0_cfg[0].samples_per_packet = 256;
2662
        else openair0_cfg[0].samples_per_packet = 1536;
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2664
  printf("HW: samples_per_packet %d\n",openair0_cfg[0].samples_per_packet);
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#endif

2667

2668
  for (card=0; card<MAX_CARDS; card++) {
2669
#ifndef EXMIMO
2670
    openair0_cfg[card].samples_per_packet = openair0_cfg[0].samples_per_packet;
2671 2672
#endif
    printf("HW: Configuring card %d, nb_antennas_tx/rx %d/%d\n",card,
2673 2674
           ((UE_flag==0) ? PHY_vars_eNB_g[0][0]->lte_frame_parms.nb_antennas_tx : PHY_vars_UE_g[0][0]->lte_frame_parms.nb_antennas_tx),
           ((UE_flag==0) ? PHY_vars_eNB_g[0][0]->lte_frame_parms.nb_antennas_rx : PHY_vars_UE_g[0][0]->lte_frame_parms.nb_antennas_rx));
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    openair0_cfg[card].Mod_id = 0;
#ifdef ETHERNET
2677 2678

    if (UE_flag) {
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2679 2680 2681
      printf("ETHERNET: Configuring UE ETH for %s:%d\n",rrh_UE_ip,rrh_UE_port);
      openair0_cfg[card].rrh_ip   = &rrh_UE_ip[0];
      openair0_cfg[card].rrh_port = rrh_UE_port;
2682 2683 2684 2685
    } else {
      printf("ETHERNET: Configuring eNB ETH for %s:%d\n",rrh_eNB_ip,rrh_eNB_port);
      openair0_cfg[card].rrh_ip   = &rrh_eNB_ip[0];
      openair0_cfg[card].rrh_port = rrh_eNB_port;
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2686
    }
2687

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2688
#endif
2689 2690 2691
    openair0_cfg[card].sample_rate = sample_rate;
    openair0_cfg[card].tx_bw = bw;
    openair0_cfg[card].rx_bw = bw;
2692
    // in the case of the USRP, the following variables need to be initialized before the init
2693
    // since the USRP only supports one CC (for the moment), we initialize all the cards with first CC.
2694
    // in the case of EXMIMO2, these values are overwirtten in the function setup_eNB/UE_buffer
2695
#ifndef EXMIMO
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2696 2697
    openair0_cfg[card].tx_num_channels=min(2,((UE_flag==0) ? PHY_vars_eNB_g[0][0]->lte_frame_parms.nb_antennas_tx : PHY_vars_UE_g[0][0]->lte_frame_parms.nb_antennas_tx));
    openair0_cfg[card].rx_num_channels=min(2,((UE_flag==0) ? PHY_vars_eNB_g[0][0]->lte_frame_parms.nb_antennas_rx : PHY_vars_UE_g[0][0]->lte_frame_parms.nb_antennas_rx));
2698 2699

    for (i=0; i<4; i++) {
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2700

2701
      openair0_cfg[card].tx_gain[i] = tx_gain[0][i];
2702
      openair0_cfg[card].rx_gain[i] = ((UE_flag==0) ? PHY_vars_eNB_g[0][0]->rx_total_gain_eNB_dB :
2703
                                       PHY_vars_UE_g[0][0]->rx_total_gain_dB) - USRP_GAIN_OFFSET;  // calibrated for USRP B210 @ 2.6 GHz, 30.72 MS/s
2704

2705 2706
      switch(frame_parms[0]->N_RB_DL) {
      case 6:
2707 2708 2709
        openair0_cfg[card].rx_gain[i] -= 6;
        break;

2710
      case 25:
2711 2712 2713
        openair0_cfg[card].rx_gain[i] += 6;
        break;

2714
      case 50:
2715 2716 2717
        openair0_cfg[card].rx_gain[i] += 8;
        break;

2718
      default:
2719
        break;
2720
      }
2721

2722 2723
      openair0_cfg[card].tx_freq[i] = (UE_flag==0) ? downlink_frequency[0][i] : downlink_frequency[0][i]+uplink_frequency_offset[0][i];
      openair0_cfg[card].rx_freq[i] = (UE_flag==0) ? downlink_frequency[0][i] + uplink_frequency_offset[0][i] : downlink_frequency[0][i];
2724
      printf("Card %d, channel %d, Setting tx_gain %f, rx_gain %f, tx_freq %f, rx_freq %f\n",
2725 2726 2727 2728 2729
             card,i, openair0_cfg[card].tx_gain[i],
             openair0_cfg[card].rx_gain[i],
             openair0_cfg[card].tx_freq[i],
             openair0_cfg[card].rx_freq[i]);

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2730
    }
2731

2732
#endif
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  }
2734

2735
  printf("Initializing openair0 ...");
2736

2737
  if (openair0_device_init(&openair0, &openair0_cfg[0]) <0) {
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2738 2739 2740
    printf("Exiting, cannot initialize device\n");
    exit(-1);
  }
2741

2742
  printf("Done\n");
2743 2744 2745

  mac_xface = malloc(sizeof(MAC_xface));

2746
#ifdef OPENAIR2
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2747
  int eMBMS_active=0;
2748

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2749
  l2_init(frame_parms[0],eMBMS_active,(uecap_xer_in==1)?uecap_xer:NULL,
2750 2751 2752 2753
          0,// cba_group_active
          0); // HO flag


2754 2755
#endif

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2756
  mac_xface->macphy_exit = &exit_fun;
2757

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2758
#if defined(ENABLE_ITTI)
2759

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2760
  if (create_tasks(UE_flag ? 0 : 1, UE_flag ? 1 : 0) < 0) {
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2761
    printf("cannot create ITTI tasks\n");
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2762 2763
    exit(-1); // need a softer mode
  }
2764

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2765
  printf("ITTI tasks created\n");
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#endif
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#ifdef OPENAIR2
2769

2770
  printf("Filling UE band info\n");
2771

2772
  if (UE_flag==1) {
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2773
    fill_ue_band_info();
2774 2775 2776 2777
    mac_xface->dl_phy_sync_success (0, 0, 0, 1);
  }
  else
    mac_xface->mrbch_phy_sync_failure (0, 0, 0);
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#endif
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2780
  /* #ifdef OPENAIR2
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2781 2782 2783 2784 2785 2786
  //if (otg_enabled) {
  init_all_otg(0);
  g_otg->seed = 0;
  init_seeds(g_otg->seed);
  g_otg->num_nodes = 2;
  for (i=0; i<g_otg->num_nodes; i++){
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2787 2788 2789 2790 2791 2792
  for (j=0; j<g_otg->num_nodes; j++){
  g_otg->application_idx[i][j] = 1;
  //g_otg->packet_gen_type=SUBSTRACT_STRING;
  g_otg->aggregation_level[i][j][0]=1;
  g_otg->application_type[i][j][0] = BCBR; //MCBR, BCBR
  }
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2793 2794 2795
  }
  init_predef_traffic(UE_flag ? 1 : 0, UE_flag ? 0 : 1);
  //  }
2796
  #endif */
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2797

2798
#ifdef EXMIMO
2799
  number_of_cards = openair0_num_detected_cards;
2800 2801
#else
  number_of_cards = 1;
2802
#endif
2803

2804

2805

2806
  for(CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
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    rf_map[CC_id].card=0;
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    rf_map[CC_id].chain=CC_id;
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2809
  }
2810

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2811 2812
  // connect the TX/RX buffers
  if (UE_flag==1) {
2813
    openair_daq_vars.timing_advance = 0;//170;
2814

2815
    if (setup_ue_buffers(UE,&openair0_cfg[0],rf_map)!=0) {
2816 2817 2818
      printf("Error setting up eNB buffer\n");
      exit(-1);
    }
2819

2820
    printf("Setting UE buffer to all-RX\n");
2821

2822
    // Set LSBs for antenna switch (ExpressMIMO)
2823
    for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
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2824
      for (i=0; i<frame_parms[CC_id]->samples_per_tti*10; i++)
2825 2826
        for (aa=0; aa<frame_parms[CC_id]->nb_antennas_tx; aa++)
          UE[CC_id]->lte_ue_common_vars.txdata[aa][i] = 0x00010001;
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2827
    }
2828

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2829
    //p_exmimo_config->framing.tdd_config = TXRXSWITCH_TESTRX;
2830
  } else {
2831
    openair_daq_vars.timing_advance = 0;
2832

2833 2834 2835 2836
    if (setup_eNB_buffers(PHY_vars_eNB_g[0],&openair0_cfg[0],rf_map)!=0) {
      printf("Error setting up eNB buffer\n");
      exit(-1);
    }
2837

2838
    printf("Setting eNB buffer to all-RX\n");
2839

2840
    // Set LSBs for antenna switch (ExpressMIMO)
2841
    for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
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2842
      for (i=0; i<frame_parms[CC_id]->samples_per_tti*10; i++)
2843 2844
        for (aa=0; aa<frame_parms[CC_id]->nb_antennas_tx; aa++)
          PHY_vars_eNB_g[0][CC_id]->lte_eNB_common_vars.txdata[0][aa][i] = 0x00010001;
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2845
    }
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2846
  }
2847

2848
#ifdef EXMIMO
2849
  openair0_config(&openair0_cfg[0],UE_flag);
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2850 2851
#endif

2852
  /*
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2853 2854
      for (ant=0;ant<4;ant++)
      p_exmimo_config->rf.do_autocal[ant] = 0;
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2855
  */
2856 2857

#ifdef EMOS
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2858
  error_code = rtf_create(CHANSOUNDER_FIFO_MINOR,CHANSOUNDER_FIFO_SIZE);
2859

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2860 2861 2862 2863 2864 2865
  if (error_code==0)
    printf("[OPENAIR][SCHED][INIT] Created EMOS FIFO %d\n",CHANSOUNDER_FIFO_MINOR);
  else if (error_code==ENODEV)
    printf("[OPENAIR][SCHED][INIT] Problem: EMOS FIFO %d is greater than or equal to RTF_NO\n",CHANSOUNDER_FIFO_MINOR);
  else if (error_code==ENOMEM)
    printf("[OPENAIR][SCHED][INIT] Problem: cannot allocate memory for EMOS FIFO %d\n",CHANSOUNDER_FIFO_MINOR);
2866
  else
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2867
    printf("[OPENAIR][SCHED][INIT] Problem creating EMOS FIFO %d, error_code %d\n",CHANSOUNDER_FIFO_MINOR,error_code);
2868

2869 2870
#endif

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2871
  mlockall(MCL_CURRENT | MCL_FUTURE);
2872 2873

#ifdef RTAI
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2874
  // make main thread LXRT soft realtime
2875
  /* task = */ rt_task_init_schmod(nam2num("MAIN"), 9, 0, 0, SCHED_FIFO, 0xF);
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  // start realtime timer and scheduler
  //rt_set_oneshot_mode();
  rt_set_periodic_mode();
  start_rt_timer(0);
2881
#endif
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2882

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2883 2884
  pthread_cond_init(&sync_cond,NULL);
  pthread_mutex_init(&sync_mutex, NULL);
2885

2886
#if defined(ENABLE_ITTI)
2887

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2888 2889 2890 2891 2892
  // Wait for eNB application initialization to be complete (eNB registration to MME)
  if (UE_flag==0) {
    printf("Waiting for eNB application to be ready\n");
    wait_system_ready ("Waiting for eNB application to be ready %s\r", &start_eNB);
  }
2893

2894
#endif
2895

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2896 2897

  // this starts the DMA transfers
2898
#ifdef EXMIMO
2899

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2900
  if (UE_flag!=1)
2901
    for (card=0; card<openair0_num_detected_cards; card++)
2902
      openair0_start_rt_acquisition(card);
2903

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2904
#endif
2905 2906

#ifdef XFORMS
2907 2908
  int UE_id;

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2909 2910
  if (do_forms==1) {
    fl_initialize (&argc, argv, NULL, 0, 0);
2911 2912

    if (UE_flag==0) {
2913
      form_stats_l2 = create_form_stats_form();
2914 2915 2916
      fl_show_form (form_stats_l2->stats_form, FL_PLACE_HOTSPOT, FL_FULLBORDER, "l2 stats");
      form_stats = create_form_stats_form();
      fl_show_form (form_stats->stats_form, FL_PLACE_HOTSPOT, FL_FULLBORDER, "stats");
2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929

      for(UE_id=0; UE_id<scope_enb_num_ue; UE_id++) {
        form_enb[UE_id] = create_lte_phy_scope_enb();
        sprintf (title, "UE%d LTE UL SCOPE eNB",UE_id+1);
        fl_show_form (form_enb[UE_id]->lte_phy_scope_enb, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);

        if (otg_enabled) {
          fl_set_button(form_enb[UE_id]->button_0,1);
          fl_set_object_label(form_enb[UE_id]->button_0,"DL Traffic ON");
        } else {
          fl_set_button(form_enb[UE_id]->button_0,0);
          fl_set_object_label(form_enb[UE_id]->button_0,"DL Traffic OFF");
        }
2930
      }
2931
    } else {
2932 2933 2934 2935 2936 2937 2938
      form_stats = create_form_stats_form();
      fl_show_form (form_stats->stats_form, FL_PLACE_HOTSPOT, FL_FULLBORDER, "stats");
      UE_id = 0;
      form_ue[UE_id] = create_lte_phy_scope_ue();
      sprintf (title, "LTE DL SCOPE UE");
      fl_show_form (form_ue[UE_id]->lte_phy_scope_ue, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);

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2939
      if (openair_daq_vars.use_ia_receiver) {
2940 2941 2942 2943 2944
        fl_set_button(form_ue[UE_id]->button_0,1);
        fl_set_object_label(form_ue[UE_id]->button_0, "IA Receiver ON");
      } else {
        fl_set_button(form_ue[UE_id]->button_0,0);
        fl_set_object_label(form_ue[UE_id]->button_0, "IA Receiver OFF");
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2945 2946 2947
      }
    }

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2948
    ret = pthread_create(&forms_thread, NULL, scope_thread, NULL);
2949

2950 2951
    if (ret == 0)
      pthread_setname_np( forms_thread, "xforms" );
2952

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2953 2954
    printf("Scope thread created, ret=%d\n",ret);
  }
2955

2956 2957 2958
#endif

#ifdef EMOS
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2959 2960
  ret = pthread_create(&thread3, NULL, emos_thread, NULL);
  printf("EMOS thread created, ret=%d\n",ret);
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2961 2962
  ret = pthread_create(&thread4, NULL, gps_thread, NULL);
  printf("GPS thread created, ret=%d\n",ret);
2963 2964
#endif

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2965
  rt_sleep_ns(10*FRAME_PERIOD);
2966 2967

#ifndef RTAI
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2968
  pthread_attr_init (&attr_dlsch_threads);
2969
  pthread_attr_setstacksize(&attr_dlsch_threads,4*PTHREAD_STACK_MIN);
2970

2971
  pthread_attr_init (&attr_UE_thread);
2972
  pthread_attr_setstacksize(&attr_UE_thread,8192);//5*PTHREAD_STACK_MIN);
2973

2974
#ifndef LOWLATENCY
2975 2976
  sched_param_UE_thread.sched_priority = sched_get_priority_max(SCHED_FIFO);
  pthread_attr_setschedparam(&attr_UE_thread,&sched_param_UE_thread);
2977
  sched_param_dlsch.sched_priority = sched_get_priority_max(SCHED_FIFO); //OPENAIR_THREAD_PRIORITY;
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  pthread_attr_setschedparam  (&attr_dlsch_threads, &sched_param_dlsch);
  pthread_attr_setschedpolicy (&attr_dlsch_threads, SCHED_FIFO);
2980
#endif
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2982 2983
#endif

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  // start the main thread
  if (UE_flag == 1) {
2986
    printf("Intializing UE Threads ...\n");
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2987
    init_UE_threads();
2988 2989 2990 2991 2992
#ifdef DLSCH_THREAD
    init_rx_pdsch_thread();
    rt_sleep_ns(FRAME_PERIOD/10);
    init_dlsch_threads();
#endif
2993

2994
    sleep(1);
2995
#ifdef RTAI
2996
    main_ue_thread = rt_thread_create(UE_thread, NULL, 100000000);
2997
#else
2998
    error_code = pthread_create(&main_ue_thread, &attr_UE_thread, UE_thread, NULL);
2999

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3000 3001 3002
    if (error_code!= 0) {
      LOG_D(HW,"[lte-softmodem.c] Could not allocate UE_thread, error %d\n",error_code);
      return(error_code);
3003
    } else {
3004 3005
      LOG_D( HW, "[lte-softmodem.c] Allocate UE_thread successful\n" );
      pthread_setname_np( main_ue_thread, "main UE" );
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    }
3007

3008
#endif
3009
    printf("UE threads created\n");
3010
  } else {
3011

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    if (multi_thread>0) {
      init_eNB_proc();
3014
      sleep(1);
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3015 3016
      LOG_D(HW,"[lte-softmodem.c] eNB threads created\n");
    }
3017

3018
    printf("Creating main eNB_thread \n");
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3019
#ifdef RTAI
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3020
    main_eNB_thread = rt_thread_create(eNB_thread, NULL, PTHREAD_STACK_MIN);
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3021
#else
3022
    error_code = pthread_create( &main_eNB_thread, &attr_dlsch_threads, eNB_thread, NULL );
3023

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3024 3025 3026
    if (error_code!= 0) {
      LOG_D(HW,"[lte-softmodem.c] Could not allocate eNB_thread, error %d\n",error_code);
      return(error_code);
3027
    } else {
3028 3029
      LOG_D( HW, "[lte-softmodem.c] Allocate eNB_thread successful\n" );
      pthread_setname_np( main_eNB_thread, "main eNB" );
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    }
3031

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#endif
  }
3034

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  // Sleep to allow all threads to setup
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  sleep(1);
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3038
#ifdef USE_MME
3039

3040 3041 3042
  while (start_UE == 0) {
    sleep(1);
  }
3043

3044 3045
#endif

3046
#ifndef EXMIMO
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3047
#ifndef USRP_DEBUG
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3048
  openair0.trx_start_func(&openair0);
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3049
  //  printf("returning from usrp start streaming: %llu\n",get_usrp_time(&openair0));
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3050
#endif
3051 3052
#endif

3053

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3054
  pthread_mutex_lock(&sync_mutex);
3055
  sync_var=0;
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  pthread_cond_broadcast(&sync_cond);
  pthread_mutex_unlock(&sync_mutex);
3058

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  // wait for end of program
  printf("TYPE <CTRL-C> TO TERMINATE\n");
  //getchar();
3062 3063

#if defined(ENABLE_ITTI)
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  printf("Entering ITTI signals handler\n");
  itti_wait_tasks_end();
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  oai_exit=1;
3067
#else
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  while (oai_exit==0)
    rt_sleep_ns(FRAME_PERIOD);
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#endif
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  // stop threads
3075
#ifdef XFORMS
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  printf("waiting for XFORMS thread\n");
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  if (do_forms==1) {
    pthread_join(forms_thread,&status);
    fl_hide_form(form_stats->stats_form);
    fl_free_form(form_stats->stats_form);

    if (UE_flag==1) {
      fl_hide_form(form_ue[0]->lte_phy_scope_ue);
      fl_free_form(form_ue[0]->lte_phy_scope_ue);
    } else {
      fl_hide_form(form_stats_l2->stats_form);
      fl_free_form(form_stats_l2->stats_form);

      for(UE_id=0; UE_id<scope_enb_num_ue; UE_id++) {
        fl_hide_form(form_enb[UE_id]->lte_phy_scope_enb);
        fl_free_form(form_enb[UE_id]->lte_phy_scope_enb);
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      }
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    }
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  }

3097 3098
#endif

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  printf("stopping MODEM threads\n");
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  // cleanup
  if (UE_flag == 1) {
3103
#ifdef EXMIMO
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#ifdef RTAI
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    rt_thread_join(main_ue_thread);
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#else
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    pthread_join(main_ue_thread,&status);
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#endif
#ifdef DLSCH_THREAD
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    cleanup_dlsch_threads();
    cleanup_rx_pdsch_thread();
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#endif
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#endif
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  } else {
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#ifdef DEBUG_THREADS
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    printf("Joining eNB_thread ...");
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#endif
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#ifdef RTAI
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    rt_thread_join(main_eNB_thread);
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#else
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    int *eNB_thread_status_p;
    int result = pthread_join( main_eNB_thread, (void**)&eNB_thread_status_p );
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#ifdef DEBUG_THREADS
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    if (result != 0) {
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      printf( "\nError joining main_eNB_thread.\n" );
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    } else {
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      if (eNB_thread_status_p) {
        printf( "status %d\n", *eNB_thread_status_p );
      } else {
        printf( "The thread was killed. No status available.\n");
      }
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    }
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#else
    UNUSED(result);
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#endif // DEBUG_THREADS
#endif // RTAI
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    if (multi_thread>0) {
      printf("Killing eNB processing threads\n");
      kill_eNB_proc();
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    }
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  }
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#ifdef OPENAIR2
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  //cleanup_pdcp_thread();
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#endif

3151
#ifdef RTAI
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  stop_rt_timer();
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#endif
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  pthread_cond_destroy(&sync_cond);
  pthread_mutex_destroy(&sync_mutex);
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3157

3158
#ifdef EXMIMO
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  printf("stopping card\n");
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  openair0_stop(0);
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  printf("closing openair0_lib\n");
  openair0_close();
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#endif
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#ifdef EMOS
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  printf("waiting for EMOS thread\n");
  pthread_cancel(thread3);
  pthread_join(thread3,&status);
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  printf("waiting for GPS thread\n");
  pthread_cancel(thread4);
  pthread_join(thread4,&status);
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#endif

#ifdef EMOS
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  error_code = rtf_destroy(CHANSOUNDER_FIFO_MINOR);
  printf("[OPENAIR][SCHED][CLEANUP] EMOS FIFO closed, error_code %d\n", error_code);
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#endif

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3179
  if (ouput_vcd)
3180
    VCD_SIGNAL_DUMPER_CLOSE();
3181

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#ifdef OPENAIR2
3183

3184
  if (opt_enabled == 1)
3185
    terminate_opt();
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#endif
3188

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  logClean();
3190

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  return 0;
}
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/* this function maps the phy_vars_eNB tx and rx buffers to the available rf chains.
   Each rf chain is is addressed by the card number and the chain on the card. The
   rf_map specifies for each CC, on which rf chain the mapping should start. Multiple
3198
   antennas are mapped to successive RF chains on the same card. */
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int setup_eNB_buffers(PHY_VARS_eNB **phy_vars_eNB, openair0_config_t *openair0_cfg, openair0_rf_map rf_map[MAX_NUM_CCs])
{
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3202
  int i, CC_id;
3203
#ifndef EXMIMO
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  uint16_t N_TA_offset = 0;
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#else
  int j;
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#endif
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  LTE_DL_FRAME_PARMS *frame_parms;
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  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
    if (phy_vars_eNB[CC_id]) {
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      frame_parms = &(phy_vars_eNB[CC_id]->lte_frame_parms);
      printf("setup_eNB_buffers: frame_parms = %p\n",frame_parms);
3215
    } else {
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      printf("phy_vars_eNB[%d] not initialized\n", CC_id);
      return(-1);
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    }
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3220
#ifndef EXMIMO
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    if (frame_parms->frame_type == TDD) {
      if (frame_parms->N_RB_DL == 100)
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        N_TA_offset = 624;
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      else if (frame_parms->N_RB_DL == 50)
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        N_TA_offset = 624/2;
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      else if (frame_parms->N_RB_DL == 25)
3228
        N_TA_offset = 624/4;
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    }
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#endif
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    // replace RX signal buffers with mmaped HW versions
3238
#ifdef EXMIMO
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    openair0_cfg[CC_id].tx_num_channels = 0;
    openair0_cfg[CC_id].rx_num_channels = 0;

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    for (i=0; i<frame_parms->nb_antennas_rx; i++) {
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      printf("Mapping eNB CC_id %d, rx_ant %d, freq %u on card %d, chain %d\n",CC_id,i,downlink_frequency[CC_id][i]+uplink_frequency_offset[CC_id][i],rf_map[CC_id].card,rf_map[CC_id].chain+i);
      free(phy_vars_eNB[CC_id]->lte_eNB_common_vars.rxdata[0][i]);
      phy_vars_eNB[CC_id]->lte_eNB_common_vars.rxdata[0][i] = (int32_t*) openair0_exmimo_pci[rf_map[CC_id].card].adc_head[rf_map[CC_id].chain+i];
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      if (openair0_cfg[rf_map[CC_id].card].rx_freq[rf_map[CC_id].chain+i]) {
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        printf("Error with rf_map! A channel has already been allocated!\n");
        return(-1);
      } else {
        openair0_cfg[rf_map[CC_id].card].rx_freq[rf_map[CC_id].chain+i] = downlink_frequency[CC_id][i]+uplink_frequency_offset[CC_id][i];
        openair0_cfg[rf_map[CC_id].card].rx_gain[rf_map[CC_id].chain+i] = rx_gain[CC_id][i];
        openair0_cfg[rf_map[CC_id].card].rx_num_channels++;
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      }
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      printf("rxdata[%d] @ %p\n",i,phy_vars_eNB[CC_id]->lte_eNB_common_vars.rxdata[0][i]);
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      for (j=0; j<16; j++) {
        printf("rxbuffer %d: %x\n",j,phy_vars_eNB[CC_id]->lte_eNB_common_vars.rxdata[0][i][j]);
        phy_vars_eNB[CC_id]->lte_eNB_common_vars.rxdata[0][i][j] = 16-j;
3261
      }
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    }
3263 3264

    for (i=0; i<frame_parms->nb_antennas_tx; i++) {
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      printf("Mapping eNB CC_id %d, tx_ant %d, freq %u on card %d, chain %d\n",CC_id,i,downlink_frequency[CC_id][i],rf_map[CC_id].card,rf_map[CC_id].chain+i);
      free(phy_vars_eNB[CC_id]->lte_eNB_common_vars.txdata[0][i]);
      phy_vars_eNB[CC_id]->lte_eNB_common_vars.txdata[0][i] = (int32_t*) openair0_exmimo_pci[rf_map[CC_id].card].dac_head[rf_map[CC_id].chain+i];
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3269
      if (openair0_cfg[rf_map[CC_id].card].tx_freq[rf_map[CC_id].chain+i]) {
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        printf("Error with rf_map! A channel has already been allocated!\n");
        return(-1);
      } else {
        openair0_cfg[rf_map[CC_id].card].tx_freq[rf_map[CC_id].chain+i] = downlink_frequency[CC_id][i];
        openair0_cfg[rf_map[CC_id].card].tx_gain[rf_map[CC_id].chain+i] = tx_gain[CC_id][i];
        openair0_cfg[rf_map[CC_id].card].tx_num_channels++;
3276
      }
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3278
      printf("txdata[%d] @ %p\n",i,phy_vars_eNB[CC_id]->lte_eNB_common_vars.txdata[0][i]);
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      for (j=0; j<16; j++) {
        printf("txbuffer %d: %x\n",j,phy_vars_eNB[CC_id]->lte_eNB_common_vars.txdata[0][i][j]);
        phy_vars_eNB[CC_id]->lte_eNB_common_vars.txdata[0][i][j] = 16-j;
3283
      }
3284
    }
3285

3286
#else // not EXMIMO
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    rxdata = (int32_t**)malloc16(frame_parms->nb_antennas_rx*sizeof(int32_t*));
    txdata = (int32_t**)malloc16(frame_parms->nb_antennas_tx*sizeof(int32_t*));

3290
    for (i=0; i<frame_parms->nb_antennas_rx; i++) {
3291
      free(phy_vars_eNB[CC_id]->lte_eNB_common_vars.rxdata[0][i]);
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3292
      rxdata[i] = (int32_t*)(16 + malloc16(16+samples_per_frame*sizeof(int32_t)));
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      phy_vars_eNB[CC_id]->lte_eNB_common_vars.rxdata[0][i] = rxdata[i]-N_TA_offset; // N_TA offset for TDD
      memset(rxdata[i], 0, samples_per_frame*sizeof(int32_t));
      printf("rxdata[%d] @ %p (%p) (N_TA_OFFSET %d)\n", i, phy_vars_eNB[CC_id]->lte_eNB_common_vars.rxdata[0][i],rxdata[i],N_TA_offset);
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3296
    }
3297 3298

    for (i=0; i<frame_parms->nb_antennas_tx; i++) {
3299
      free(phy_vars_eNB[CC_id]->lte_eNB_common_vars.txdata[0][i]);
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      txdata[i] = (int32_t*)(16 + malloc16(16 + samples_per_frame*sizeof(int32_t)));
3301 3302
      phy_vars_eNB[CC_id]->lte_eNB_common_vars.txdata[0][i] = txdata[i];
      memset(txdata[i], 0, samples_per_frame*sizeof(int32_t));
3303
      printf("txdata[%d] @ %p\n", i, phy_vars_eNB[CC_id]->lte_eNB_common_vars.txdata[0][i]);
3304

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    }
3306

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#endif
3308
  }
3309

3310
  return(0);
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}
3312

3313 3314
void reset_opp_meas(void)
{
3315 3316 3317
  int sfn;
  reset_meas(&softmodem_stats_mt);
  reset_meas(&softmodem_stats_hw);
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3319 3320 3321 3322 3323 3324
  for (sfn=0; sfn < 10; sfn++) {
    reset_meas(&softmodem_stats_tx_sf[sfn]);
    reset_meas(&softmodem_stats_rx_sf[sfn]);
  }
}

3325 3326
void print_opp_meas(void)
{
3327 3328 3329
  int sfn=0;
  print_meas(&softmodem_stats_mt, "Main ENB Thread", NULL, NULL);
  print_meas(&softmodem_stats_hw, "HW Acquisation", NULL, NULL);
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3331 3332 3333 3334 3335
  for (sfn=0; sfn < 10; sfn++) {
    print_meas(&softmodem_stats_tx_sf[sfn],"[eNB][total_phy_proc_tx]",NULL, NULL);
    print_meas(&softmodem_stats_rx_sf[sfn],"[eNB][total_phy_proc_rx]",NULL,NULL);
  }
}