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openairinterface5g/targets/RT/USER/lte-enb.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file lte-enb.c
* \brief Top-level threads for eNodeB
* \author R. Knopp, F. Kaltenberger, Navid Nikaein
* \date 2012
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr
* \note
* \warning
*/
#define _GNU_SOURCE
#include <pthread.h>
#include "time_utils.h"
#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all
#include "rt_wrapper.h"
#include "assertions.h"
#include "PHY/types.h"
#include "PHY/defs.h"
#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all
//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
#include "../../ARCH/COMMON/common_lib.h"
//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
#include "PHY/LTE_TRANSPORT/if4_tools.h"
#include "PHY/LTE_TRANSPORT/if5_tools.h"
#include "PHY/extern.h"
#include "SCHED/extern.h"
#include "LAYER2/MAC/extern.h"
#include "../../SIMU/USER/init_lte.h"
#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/extern.h"
#include "LAYER2/MAC/proto.h"
#include "RRC/LITE/extern.h"
#include "PHY_INTERFACE/extern.h"
#include "PHY_INTERFACE/defs.h"
#ifdef SMBV
#include "PHY/TOOLS/smbv.h"
unsigned short config_frames[4] = {2,9,11,13};
#endif
#include "UTIL/LOG/log_extern.h"
#include "UTIL/OTG/otg_tx.h"
#include "UTIL/OTG/otg_externs.h"
#include "UTIL/MATH/oml.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "enb_config.h"
//#include "PHY/TOOLS/time_meas.h"
#ifndef OPENAIR2
#include "UTIL/OTG/otg_extern.h"
#endif
#if defined(ENABLE_ITTI)
# if defined(ENABLE_USE_MME)
# include "s1ap_eNB.h"
#ifdef PDCP_USE_NETLINK
# include "SIMULATION/ETH_TRANSPORT/proto.h"
#endif
# endif
#endif
#include "T.h"
//#define DEBUG_THREADS 1
//#define USRP_DEBUG 1
struct timing_info_t {
//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;
} timing_info;
// Fix per CC openair rf/if device update
// extern openair0_device openair0;
#if defined(ENABLE_ITTI)
extern volatile int start_eNB;
extern volatile int start_UE;
#endif
extern volatile int oai_exit;
extern openair0_config_t openair0_cfg[MAX_CARDS];
extern int transmission_mode;
extern int oaisim_flag;
uint16_t sf_ahead=4;
//pthread_t main_eNB_thread;
time_stats_t softmodem_stats_mt; // main thread
time_stats_t softmodem_stats_hw; // hw acquisition
time_stats_t softmodem_stats_rxtx_sf; // total tx time
time_stats_t nfapi_meas; // total tx time
time_stats_t softmodem_stats_rx_sf; // total rx time
/* mutex, cond and variable to serialize phy proc TX calls
* (this mechanism may be relaxed in the future for better
* performances)
*/
static struct {
pthread_mutex_t mutex_phy_proc_tx;
pthread_cond_t cond_phy_proc_tx;
volatile uint8_t phy_proc_CC_id;
} sync_phy_proc;
extern double cpuf;
void exit_fun(const char* s);
void init_eNB(int,int);
void stop_eNB(int nb_inst);
void wakeup_prach_eNB(PHY_VARS_eNB *eNB,RU_t *ru,int frame,int subframe);
#ifdef Rel14
void wakeup_prach_eNB_br(PHY_VARS_eNB *eNB,RU_t *ru,int frame,int subframe);
#endif
extern uint8_t nfapi_mode;
extern void oai_subframe_ind(uint16_t sfn, uint16_t sf);
extern void add_subframe(uint16_t *frameP, uint16_t *subframeP, int offset);
//#define TICK_TO_US(ts) (ts.diff)
#define TICK_TO_US(ts) (ts.trials==0?0:ts.diff/ts.trials)
static inline int rxtx(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc, char *thread_name) {
static double cpu_freq_GHz = 0.0;
if (cpu_freq_GHz == 0.0)
cpu_freq_GHz = get_cpu_freq_GHz();
start_meas(&softmodem_stats_rxtx_sf);
// *******************************************************************
if (nfapi_mode == 1) {
// I am a PNF and I need to let nFAPI know that we have a (sub)frame tick
uint16_t frame = proc->frame_rx;
uint16_t subframe = proc->subframe_rx;
//add_subframe(&frame, &subframe, 4);
//oai_subframe_ind(proc->frame_tx, proc->subframe_tx);
//LOG_D(PHY, "oai_subframe_ind(frame:%u, subframe:%d) - NOT CALLED ********\n", frame, subframe);
start_meas(&nfapi_meas);
oai_subframe_ind(frame, subframe);
stop_meas(&nfapi_meas);
if (eNB->UL_INFO.rx_ind.rx_indication_body.number_of_pdus||
eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs ||
eNB->UL_INFO.crc_ind.crc_indication_body.number_of_crcs ||
eNB->UL_INFO.rach_ind.rach_indication_body.number_of_preambles ||
eNB->UL_INFO.cqi_ind.number_of_cqis
) {
LOG_D(PHY, "UL_info[rx_ind:%05d:%d harqs:%05d:%d crcs:%05d:%d preambles:%05d:%d cqis:%d] RX:%04d%d TX:%04d%d num_pdcch_symbols:%d\n",
NFAPI_SFNSF2DEC(eNB->UL_INFO.rx_ind.sfn_sf), eNB->UL_INFO.rx_ind.rx_indication_body.number_of_pdus,
NFAPI_SFNSF2DEC(eNB->UL_INFO.harq_ind.sfn_sf), eNB->UL_INFO.harq_ind.harq_indication_body.number_of_harqs,
NFAPI_SFNSF2DEC(eNB->UL_INFO.crc_ind.sfn_sf), eNB->UL_INFO.crc_ind.crc_indication_body.number_of_crcs,
NFAPI_SFNSF2DEC(eNB->UL_INFO.rach_ind.sfn_sf), eNB->UL_INFO.rach_ind.rach_indication_body.number_of_preambles,
eNB->UL_INFO.cqi_ind.number_of_cqis,
proc->frame_rx, proc->subframe_rx,
proc->frame_tx, proc->subframe_tx, eNB->pdcch_vars[proc->subframe_tx&1].num_pdcch_symbols);
}
}
if (nfapi_mode == 1 && eNB->pdcch_vars[proc->subframe_tx&1].num_pdcch_symbols == 0) {
LOG_E(PHY, "eNB->pdcch_vars[proc->subframe_tx&1].num_pdcch_symbols == 0");
return 0;
}
// ****************************************
// Common RX procedures subframe n
T(T_ENB_PHY_DL_TICK, T_INT(eNB->Mod_id), T_INT(proc->frame_tx), T_INT(proc->subframe_tx));
// if this is IF5 or 3GPP_eNB
if (eNB && eNB->RU_list && eNB->RU_list[0] && eNB->RU_list[0]->function < NGFI_RAU_IF4p5) {
wakeup_prach_eNB(eNB,NULL,proc->frame_rx,proc->subframe_rx);
#ifdef Rel14
wakeup_prach_eNB_br(eNB,NULL,proc->frame_rx,proc->subframe_rx);
#endif
}
release_UE_in_freeList(eNB->Mod_id);
// UE-specific RX processing for subframe n
if (nfapi_mode == 0 || nfapi_mode == 1) {
phy_procedures_eNB_uespec_RX(eNB, proc, no_relay );
}
pthread_mutex_lock(&eNB->UL_INFO_mutex);
eNB->UL_INFO.frame = proc->frame_rx;
eNB->UL_INFO.subframe = proc->subframe_rx;
eNB->UL_INFO.module_id = eNB->Mod_id;
eNB->UL_INFO.CC_id = eNB->CC_id;
eNB->if_inst->UL_indication(&eNB->UL_INFO);
pthread_mutex_unlock(&eNB->UL_INFO_mutex);
// *****************************************
// TX processing for subframe n+sf_ahead
// run PHY TX procedures the one after the other for all CCs to avoid race conditions
// (may be relaxed in the future for performance reasons)
// *****************************************
//if (wait_CCs(proc)<0) return(-1);
if (oai_exit) return(-1);
#if (!defined(UE_EXPANSION_SIM2)) &&(!defined(UE_EXPANSION))
phy_procedures_eNB_TX(eNB, proc, no_relay, NULL, 1);
#endif
if (release_thread(&proc->mutex_rxtx,&proc->instance_cnt_rxtx,thread_name)<0) return(-1);
stop_meas( &softmodem_stats_rxtx_sf );
LOG_D(PHY,"%s() Exit proc[rx:%d%d tx:%d%d]\n", __FUNCTION__, proc->frame_rx, proc->subframe_rx, proc->frame_tx, proc->subframe_tx);
#if 0
LOG_D(PHY, "rxtx:%lld nfapi:%lld phy:%lld tx:%lld rx:%lld prach:%lld ofdm:%lld ",
softmodem_stats_rxtx_sf.diff_now, nfapi_meas.diff_now,
TICK_TO_US(eNB->phy_proc),
TICK_TO_US(eNB->phy_proc_tx),
TICK_TO_US(eNB->phy_proc_rx),
TICK_TO_US(eNB->rx_prach),
TICK_TO_US(eNB->ofdm_mod_stats),
softmodem_stats_rxtx_sf.diff_now, nfapi_meas.diff_now);
LOG_D(PHY,
"dlsch[enc:%lld mod:%lld scr:%lld rm:%lld t:%lld i:%lld] rx_dft:%lld ",
TICK_TO_US(eNB->dlsch_encoding_stats),
TICK_TO_US(eNB->dlsch_modulation_stats),
TICK_TO_US(eNB->dlsch_scrambling_stats),
TICK_TO_US(eNB->dlsch_rate_matching_stats),
TICK_TO_US(eNB->dlsch_turbo_encoding_stats),
TICK_TO_US(eNB->dlsch_interleaving_stats),
TICK_TO_US(eNB->rx_dft_stats));
LOG_D(PHY," ulsch[ch:%lld freq:%lld dec:%lld demod:%lld ru:%lld ",
TICK_TO_US(eNB->ulsch_channel_estimation_stats),
TICK_TO_US(eNB->ulsch_freq_offset_estimation_stats),
TICK_TO_US(eNB->ulsch_decoding_stats),
TICK_TO_US(eNB->ulsch_demodulation_stats),
TICK_TO_US(eNB->ulsch_rate_unmatching_stats));
LOG_D(PHY, "td:%lld dei:%lld dem:%lld llr:%lld tci:%lld ",
TICK_TO_US(eNB->ulsch_turbo_decoding_stats),
TICK_TO_US(eNB->ulsch_deinterleaving_stats),
TICK_TO_US(eNB->ulsch_demultiplexing_stats),
TICK_TO_US(eNB->ulsch_llr_stats),
TICK_TO_US(eNB->ulsch_tc_init_stats));
LOG_D(PHY, "tca:%lld tcb:%lld tcg:%lld tce:%lld l1:%lld l2:%lld]\n\n",
TICK_TO_US(eNB->ulsch_tc_alpha_stats),
TICK_TO_US(eNB->ulsch_tc_beta_stats),
TICK_TO_US(eNB->ulsch_tc_gamma_stats),
TICK_TO_US(eNB->ulsch_tc_ext_stats),
TICK_TO_US(eNB->ulsch_tc_intl1_stats),
TICK_TO_US(eNB->ulsch_tc_intl2_stats)
);
#endif
return(0);
}
/*!
* \brief The RX UE-specific and TX thread of eNB.
* \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_rxtx( void* param ) {
static int eNB_thread_rxtx_status;
eNB_rxtx_proc_t *proc = (eNB_rxtx_proc_t*)param;
PHY_VARS_eNB *eNB = RC.eNB[0][proc->CC_id];
char thread_name[100];
// set default return value
eNB_thread_rxtx_status = 0;
sprintf(thread_name,"RXn_TXnp4_%d",&eNB->proc.proc_rxtx[0] == proc ? 0 : 1);
thread_top_init(thread_name,1,850000L,1000000L,2000000L);
while (!oai_exit) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RXTX0+(proc->subframe_rx&1), 0 );
if (wait_on_condition(&proc->mutex_rxtx,&proc->cond_rxtx,&proc->instance_cnt_rxtx,thread_name)<0) break;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RXTX0+(proc->subframe_rx&1), 1 );
if (oai_exit) break;
if (eNB->CC_id==0)
{
if (rxtx(eNB,proc,thread_name) < 0) break;
}
if (release_thread(&proc->mutex_rxtx,&proc->instance_cnt_rxtx,thread_name)<0) break;
} // while !oai_exit
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RXTX0+(proc->subframe_rx&1), 0 );
printf( "Exiting eNB thread RXn_TXnp4\n");
eNB_thread_rxtx_status = 0;
return &eNB_thread_rxtx_status;
}
#if 0 //defined(ENABLE_ITTI) && defined(ENABLE_USE_MME)
// Wait for eNB application initialization to be complete (eNB registration to MME)
static void wait_system_ready (char *message, volatile int *start_flag) {
static char *indicator[] = {". ", ".. ", "... ", ".... ", ".....",
" ....", " ...", " ..", " .", " "};
int i = 0;
while ((!oai_exit) && (*start_flag == 0)) {
LOG_N(EMU, message, indicator[i]);
fflush(stdout);
i = (i + 1) % (sizeof(indicator) / sizeof(indicator[0]));
usleep(200000);
}
LOG_D(EMU,"\n");
}
#endif
void eNB_top(PHY_VARS_eNB *eNB, int frame_rx, int subframe_rx, char *string)
{
eNB_proc_t *proc = &eNB->proc;
eNB_rxtx_proc_t *proc_rxtx = &proc->proc_rxtx[0];
proc->frame_rx = frame_rx;
proc->subframe_rx = subframe_rx;
if (!oai_exit) {
T(T_ENB_MASTER_TICK, T_INT(0), T_INT(proc->frame_rx), T_INT(proc->subframe_rx));
proc_rxtx->subframe_rx = proc->subframe_rx;
proc_rxtx->frame_rx = proc->frame_rx;
proc_rxtx->subframe_tx = (proc->subframe_rx+sf_ahead)%10;
proc_rxtx->frame_tx = (proc->subframe_rx>(9-sf_ahead)) ? (1+proc->frame_rx)&1023 : proc->frame_rx;
proc->frame_tx = proc_rxtx->frame_tx;
proc_rxtx->timestamp_tx = proc->timestamp_tx;
if (rxtx(eNB,proc_rxtx,string) < 0) LOG_E(PHY,"eNB %d CC_id %d failed during execution\n",eNB->Mod_id,eNB->CC_id);
}
}
int wakeup_rxtx(PHY_VARS_eNB *eNB,RU_t *ru) {
eNB_proc_t *proc=&eNB->proc;
eNB_rxtx_proc_t *proc_rxtx=&proc->proc_rxtx[proc->frame_rx&1];
LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
int i;
struct timespec wait;
pthread_mutex_lock(&proc->mutex_RU);
for (i=0;i<eNB->num_RU;i++) {
if (ru == eNB->RU_list[i]) {
if ((proc->RU_mask&(1<<i)) > 0)
LOG_E(PHY,"eNB %d frame %d, subframe %d : previous information from RU %d (num_RU %d,mask %x) has not been served yet!\n",
eNB->Mod_id,proc->frame_rx,proc->subframe_rx,ru->idx,eNB->num_RU,proc->RU_mask);
proc->RU_mask |= (1<<i);
}
}
if (proc->RU_mask != (1<<eNB->num_RU)-1) { // not all RUs have provided their information so return
LOG_E(PHY,"Not all RUs have provided their info\n");
pthread_mutex_unlock(&proc->mutex_RU);
return(0);
}
else { // all RUs have provided their information so continue on and wakeup eNB processing
proc->RU_mask = 0;
pthread_mutex_unlock(&proc->mutex_RU);
}
wait.tv_sec=0;
wait.tv_nsec=5000000L;
/* accept some delay in processing - up to 5ms */
for (i = 0; i < 10 && proc_rxtx->instance_cnt_rxtx == 0; i++) {
LOG_W( PHY,"[eNB] Frame %d Subframe %d, eNB RXn-TXnp4 thread busy!! (cnt_rxtx %i)\n", proc_rxtx->frame_tx, proc_rxtx->subframe_tx, proc_rxtx->instance_cnt_rxtx);
usleep(500);
}
if (proc_rxtx->instance_cnt_rxtx == 0) {
exit_fun( "TX thread busy" );
return(-1);
}
// wake up TX for subframe n+sf_ahead
// lock the TX mutex and make sure the thread is ready
if (pthread_mutex_timedlock(&proc_rxtx->mutex_rxtx,&wait) != 0) {
LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB RXTX thread %d (IC %d)\n", proc_rxtx->subframe_rx&1,proc_rxtx->instance_cnt_rxtx );
exit_fun( "error locking mutex_rxtx" );
return(-1);
}
++proc_rxtx->instance_cnt_rxtx;
// We have just received and processed the common part of a subframe, say n.
// TS_rx is the last received timestamp (start of 1st slot), TS_tx is the desired
// transmitted timestamp of the next TX slot (first).
// The last (TS_rx mod samples_per_frame) was n*samples_per_tti,
// we want to generate subframe (n+sf_ahead), so TS_tx = TX_rx+sf_ahead*samples_per_tti,
// and proc->subframe_tx = proc->subframe_rx+sf_ahead
proc_rxtx->timestamp_tx = proc->timestamp_rx + (sf_ahead*fp->samples_per_tti);
proc_rxtx->frame_rx = proc->frame_rx;
proc_rxtx->subframe_rx = proc->subframe_rx;
proc_rxtx->frame_tx = (proc_rxtx->subframe_rx > (9-sf_ahead)) ? (proc_rxtx->frame_rx+1)&1023 : proc_rxtx->frame_rx;
proc_rxtx->subframe_tx = (proc_rxtx->subframe_rx + sf_ahead)%10;
// the thread can now be woken up
if (pthread_cond_signal(&proc_rxtx->cond_rxtx) != 0) {
LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB RXn-TXnp4 thread\n");
exit_fun( "ERROR pthread_cond_signal" );
return(-1);
}
pthread_mutex_unlock( &proc_rxtx->mutex_rxtx );
return(0);
}
void wakeup_prach_eNB(PHY_VARS_eNB *eNB,RU_t *ru,int frame,int subframe) {
eNB_proc_t *proc = &eNB->proc;
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
int i;
if (ru!=NULL) {
pthread_mutex_lock(&proc->mutex_RU_PRACH);
for (i=0;i<eNB->num_RU;i++) {
if (ru == eNB->RU_list[i]) {
LOG_D(PHY,"frame %d, subframe %d: RU %d for eNB %d signals PRACH (mask %x, num_RU %d)\n",frame,subframe,i,eNB->Mod_id,proc->RU_mask_prach,eNB->num_RU);
if ((proc->RU_mask_prach&(1<<i)) > 0)
LOG_E(PHY,"eNB %d frame %d, subframe %d : previous information (PRACH) from RU %d (num_RU %d, mask %x) has not been served yet!\n",
eNB->Mod_id,frame,subframe,ru->idx,eNB->num_RU,proc->RU_mask_prach);
proc->RU_mask_prach |= (1<<i);
}
}
if (proc->RU_mask_prach != (1<<eNB->num_RU)-1) { // not all RUs have provided their information so return
pthread_mutex_unlock(&proc->mutex_RU_PRACH);
return;
}
else { // all RUs have provided their information so continue on and wakeup eNB processing
proc->RU_mask_prach = 0;
pthread_mutex_unlock(&proc->mutex_RU_PRACH);
}
}
// check if we have to detect PRACH first
if (is_prach_subframe(fp,frame,subframe)>0) {
LOG_D(PHY,"Triggering prach processing, frame %d, subframe %d\n",frame,subframe);
if (proc->instance_cnt_prach == 0) {
LOG_W(PHY,"[eNB] Frame %d Subframe %d, dropping PRACH\n", frame,subframe);
return;
}
// wake up thread for PRACH RX
if (pthread_mutex_lock(&proc->mutex_prach) != 0) {
LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB PRACH thread %d (IC %d)\n", proc->thread_index, proc->instance_cnt_prach);
exit_fun( "error locking mutex_prach" );
return;
}
++proc->instance_cnt_prach;
// set timing for prach thread
proc->frame_prach = frame;
proc->subframe_prach = subframe;
// the thread can now be woken up
if (pthread_cond_signal(&proc->cond_prach) != 0) {
LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB PRACH thread %d\n", proc->thread_index);
exit_fun( "ERROR pthread_cond_signal" );
return;
}
pthread_mutex_unlock( &proc->mutex_prach );
}
}
#ifdef Rel14
void wakeup_prach_eNB_br(PHY_VARS_eNB *eNB,RU_t *ru,int frame,int subframe) {
eNB_proc_t *proc = &eNB->proc;
LTE_DL_FRAME_PARMS *fp=&eNB->frame_parms;
int i;
if (ru!=NULL) {
pthread_mutex_lock(&proc->mutex_RU_PRACH_br);
for (i=0;i<eNB->num_RU;i++) {
if (ru == eNB->RU_list[i]) {
LOG_D(PHY,"frame %d, subframe %d: RU %d for eNB %d signals PRACH BR (mask %x, num_RU %d)\n",frame,subframe,i,eNB->Mod_id,proc->RU_mask_prach_br,eNB->num_RU);
if ((proc->RU_mask_prach_br&(1<<i)) > 0)
LOG_E(PHY,"eNB %d frame %d, subframe %d : previous information (PRACH BR) from RU %d (num_RU %d, mask %x) has not been served yet!\n",
eNB->Mod_id,frame,subframe,ru->idx,eNB->num_RU,proc->RU_mask_prach_br);
proc->RU_mask_prach_br |= (1<<i);
}
}
if (proc->RU_mask_prach_br != (1<<eNB->num_RU)-1) { // not all RUs have provided their information so return
pthread_mutex_unlock(&proc->mutex_RU_PRACH_br);
return;
}
else { // all RUs have provided their information so continue on and wakeup eNB processing
proc->RU_mask_prach_br = 0;
pthread_mutex_unlock(&proc->mutex_RU_PRACH_br);
}
}
// check if we have to detect PRACH first
if (is_prach_subframe(fp,frame,subframe)>0) {
LOG_D(PHY,"Triggering prach br processing, frame %d, subframe %d\n",frame,subframe);
if (proc->instance_cnt_prach_br == 0) {
LOG_W(PHY,"[eNB] Frame %d Subframe %d, dropping PRACH BR\n", frame,subframe);
return;
}
// wake up thread for PRACH RX
if (pthread_mutex_lock(&proc->mutex_prach_br) != 0) {
LOG_E( PHY, "[eNB] ERROR pthread_mutex_lock for eNB PRACH thread %d (IC %d)\n", proc->thread_index, proc->instance_cnt_prach_br);
exit_fun( "error locking mutex_prach" );
return;
}
++proc->instance_cnt_prach_br;
// set timing for prach thread
proc->frame_prach_br = frame;
proc->subframe_prach_br = subframe;
// the thread can now be woken up
if (pthread_cond_signal(&proc->cond_prach_br) != 0) {
LOG_E( PHY, "[eNB] ERROR pthread_cond_signal for eNB PRACH BR thread %d\n", proc->thread_index);
exit_fun( "ERROR pthread_cond_signal" );
return;
}
pthread_mutex_unlock( &proc->mutex_prach_br );
}
}
#endif
/*!
* \brief The prach receive thread of eNB.
* \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_prach( void* param ) {
static int eNB_thread_prach_status;
PHY_VARS_eNB *eNB= (PHY_VARS_eNB *)param;
eNB_proc_t *proc = &eNB->proc;
// set default return value
eNB_thread_prach_status = 0;
thread_top_init("eNB_thread_prach",1,500000L,1000000L,20000000L);
while (!oai_exit) {
if (oai_exit) break;
if (wait_on_condition(&proc->mutex_prach,&proc->cond_prach,&proc->instance_cnt_prach,"eNB_prach_thread") < 0) break;
LOG_D(PHY,"Running eNB prach procedures\n");
prach_procedures(eNB
#ifdef Rel14
,0
#endif
);
if (release_thread(&proc->mutex_prach,&proc->instance_cnt_prach,"eNB_prach_thread") < 0) break;
}
LOG_I(PHY, "Exiting eNB thread PRACH\n");
eNB_thread_prach_status = 0;
return &eNB_thread_prach_status;
}
#ifdef Rel14
/*!
* \brief The prach receive thread of eNB for BL/CE UEs.
* \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_prach_br( void* param ) {
static int eNB_thread_prach_status;
PHY_VARS_eNB *eNB= (PHY_VARS_eNB *)param;
eNB_proc_t *proc = &eNB->proc;
// set default return value
eNB_thread_prach_status = 0;
thread_top_init("eNB_thread_prach_br",1,500000L,1000000L,20000000L);
while (!oai_exit) {
if (oai_exit) break;
if (wait_on_condition(&proc->mutex_prach_br,&proc->cond_prach_br,&proc->instance_cnt_prach_br,"eNB_prach_thread_br") < 0) break;
LOG_D(PHY,"Running eNB prach procedures for BL/CE UEs\n");
prach_procedures(eNB,1);
if (release_thread(&proc->mutex_prach_br,&proc->instance_cnt_prach_br,"eNB_prach_thread_br") < 0) break;
}
LOG_I(PHY, "Exiting eNB thread PRACH BR\n");
eNB_thread_prach_status = 0;
return &eNB_thread_prach_status;
}
#endif
extern void init_td_thread(PHY_VARS_eNB *, pthread_attr_t *);
extern void init_te_thread(PHY_VARS_eNB *, pthread_attr_t *);
void init_eNB_proc(int inst) {
int i=0;
int CC_id;
PHY_VARS_eNB *eNB;
eNB_proc_t *proc;
eNB_rxtx_proc_t *proc_rxtx;
pthread_attr_t *attr0=NULL,*attr1=NULL,*attr_prach=NULL;
//*attr_td=NULL,*attr_te=NULL;
#ifdef Rel14
pthread_attr_t *attr_prach_br=NULL;
#endif
LOG_I(PHY,"%s(inst:%d) RC.nb_CC[inst]:%d \n",__FUNCTION__,inst,RC.nb_CC[inst]);
for (CC_id=0; CC_id<RC.nb_CC[inst]; CC_id++) {
eNB = RC.eNB[inst][CC_id];
#ifndef OCP_FRAMEWORK
LOG_I(PHY,"Initializing eNB processes instance:%d CC_id %d \n",inst,CC_id);
#endif
proc = &eNB->proc;
proc_rxtx = proc->proc_rxtx;
proc_rxtx[0].instance_cnt_rxtx = -1;
proc_rxtx[1].instance_cnt_rxtx = -1;
proc->instance_cnt_prach = -1;
proc->instance_cnt_asynch_rxtx = -1;
proc->CC_id = CC_id;
proc->first_rx=1;
proc->first_tx=1;
proc->RU_mask=0;
proc->RU_mask_prach=0;
pthread_mutex_init( &eNB->UL_INFO_mutex, NULL);
pthread_mutex_init( &proc_rxtx[0].mutex_rxtx, NULL);
pthread_mutex_init( &proc_rxtx[1].mutex_rxtx, NULL);
pthread_cond_init( &proc_rxtx[0].cond_rxtx, NULL);
pthread_cond_init( &proc_rxtx[1].cond_rxtx, NULL);
pthread_mutex_init( &proc->mutex_prach, NULL);
pthread_mutex_init( &proc->mutex_asynch_rxtx, NULL);
pthread_mutex_init( &proc->mutex_RU,NULL);
pthread_mutex_init( &proc->mutex_RU_PRACH,NULL);
pthread_cond_init( &proc->cond_prach, NULL);
pthread_cond_init( &proc->cond_asynch_rxtx, NULL);
pthread_attr_init( &proc->attr_prach);
pthread_attr_init( &proc->attr_asynch_rxtx);
// pthread_attr_init( &proc->attr_td);
// pthread_attr_init( &proc->attr_te);
pthread_attr_init( &proc_rxtx[0].attr_rxtx);
pthread_attr_init( &proc_rxtx[1].attr_rxtx);
#ifdef Rel14
proc->instance_cnt_prach_br = -1;
proc->RU_mask_prach_br=0;
pthread_mutex_init( &proc->mutex_prach_br, NULL);
pthread_mutex_init( &proc->mutex_RU_PRACH_br,NULL);
pthread_cond_init( &proc->cond_prach_br, NULL);
pthread_attr_init( &proc->attr_prach_br);
#endif
#ifndef DEADLINE_SCHEDULER
attr0 = &proc_rxtx[0].attr_rxtx;
attr1 = &proc_rxtx[1].attr_rxtx;
attr_prach = &proc->attr_prach;
#ifdef Rel14
attr_prach_br = &proc->attr_prach_br;
#endif
// attr_td = &proc->attr_td;
// attr_te = &proc->attr_te;
#endif
LOG_I(PHY,"eNB->single_thread_flag:%d\n", eNB->single_thread_flag);
if (eNB->single_thread_flag==0) {
pthread_create( &proc_rxtx[0].pthread_rxtx, attr0, eNB_thread_rxtx, &proc_rxtx[0] );
pthread_create( &proc_rxtx[1].pthread_rxtx, attr1, eNB_thread_rxtx, &proc_rxtx[1] );
}
pthread_create( &proc->pthread_prach, attr_prach, eNB_thread_prach, eNB );
#ifdef Rel14
pthread_create( &proc->pthread_prach_br, attr_prach_br, eNB_thread_prach_br, eNB );
#endif
char name[16];
if (eNB->single_thread_flag==0) {
snprintf( name, sizeof(name), "RXTX0 %d", i );
pthread_setname_np( proc_rxtx[0].pthread_rxtx, name );
snprintf( name, sizeof(name), "RXTX1 %d", i );
pthread_setname_np( proc_rxtx[1].pthread_rxtx, name );
}
AssertFatal(proc->instance_cnt_prach == -1,"instance_cnt_prach = %d\n",proc->instance_cnt_prach);
}
//for multiple CCs: setup master and slaves
/*
for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
eNB = PHY_vars_eNB_g[inst][CC_id];
if (eNB->node_timing == synch_to_ext_device) { //master
eNB->proc.num_slaves = MAX_NUM_CCs-1;
eNB->proc.slave_proc = (eNB_proc_t**)malloc(eNB->proc.num_slaves*sizeof(eNB_proc_t*));
for (i=0; i< eNB->proc.num_slaves; i++) {
if (i < CC_id) eNB->proc.slave_proc[i] = &(PHY_vars_eNB_g[inst][i]->proc);
if (i >= CC_id) eNB->proc.slave_proc[i] = &(PHY_vars_eNB_g[inst][i+1]->proc);
}
}
}
*/
/* setup PHY proc TX sync mechanism */
pthread_mutex_init(&sync_phy_proc.mutex_phy_proc_tx, NULL);
pthread_cond_init(&sync_phy_proc.cond_phy_proc_tx, NULL);
sync_phy_proc.phy_proc_CC_id = 0;
}
/*!
* \brief Terminate eNB TX and RX threads.
*/
void kill_eNB_proc(int inst) {
int *status;
PHY_VARS_eNB *eNB;
eNB_proc_t *proc;
eNB_rxtx_proc_t *proc_rxtx;
for (int CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
eNB=RC.eNB[inst][CC_id];
proc = &eNB->proc;
proc_rxtx = &proc->proc_rxtx[0];
LOG_I(PHY, "Killing TX CC_id %d inst %d\n", CC_id, inst );
if (eNB->single_thread_flag==0) {
proc_rxtx[0].instance_cnt_rxtx = 0; // FIXME data race!
proc_rxtx[1].instance_cnt_rxtx = 0; // FIXME data race!
pthread_cond_signal( &proc_rxtx[0].cond_rxtx );
pthread_cond_signal( &proc_rxtx[1].cond_rxtx );
}
proc->instance_cnt_prach = 0;
pthread_cond_signal( &proc->cond_prach );
pthread_cond_broadcast(&sync_phy_proc.cond_phy_proc_tx);
pthread_join( proc->pthread_prach, (void**)&status );
LOG_I(PHY, "Destroying prach mutex/cond\n");
pthread_mutex_destroy( &proc->mutex_prach );
pthread_cond_destroy( &proc->cond_prach );
#ifdef Rel14
proc->instance_cnt_prach_br = 0;
pthread_cond_signal( &proc->cond_prach_br );
pthread_join( proc->pthread_prach_br, (void**)&status );
pthread_mutex_destroy( &proc->mutex_prach_br );
pthread_cond_destroy( &proc->cond_prach_br );
#endif
LOG_I(PHY, "Destroying UL_INFO mutex\n");
pthread_mutex_destroy(&eNB->UL_INFO_mutex);
int i;
if (eNB->single_thread_flag==0) {
for (i=0;i<2;i++) {
LOG_I(PHY, "Joining rxtx[%d] mutex/cond\n",i);
pthread_join( proc_rxtx[i].pthread_rxtx, (void**)&status );
LOG_I(PHY, "Destroying rxtx[%d] mutex/cond\n",i);
pthread_mutex_destroy( &proc_rxtx[i].mutex_rxtx );
pthread_cond_destroy( &proc_rxtx[i].cond_rxtx );
}
}
}
}
void reset_opp_meas(void) {
int sfn;
reset_meas(&softmodem_stats_mt);
reset_meas(&softmodem_stats_hw);
for (sfn=0; sfn < 10; sfn++) {
reset_meas(&softmodem_stats_rxtx_sf);
reset_meas(&softmodem_stats_rx_sf);
}
}
void print_opp_meas(void) {
int sfn=0;
print_meas(&softmodem_stats_mt, "Main ENB Thread", NULL, NULL);
print_meas(&softmodem_stats_hw, "HW Acquisation", NULL, NULL);
for (sfn=0; sfn < 10; sfn++) {
print_meas(&softmodem_stats_rxtx_sf,"[eNB][total_phy_proc_rxtx]",NULL, NULL);
print_meas(&softmodem_stats_rx_sf,"[eNB][total_phy_proc_rx]",NULL,NULL);
}
}
void init_transport(PHY_VARS_eNB *eNB) {
int i;
int j;
LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
LOG_I(PHY, "Initialise transport\n");
for (i=0; i<NUMBER_OF_UE_MAX; i++) {
LOG_I(PHY,"Allocating Transport Channel Buffers for DLSCH, UE %d\n",i);
for (j=0; j<2; j++) {
eNB->dlsch[i][j] = new_eNB_dlsch(1,8,NSOFT,fp->N_RB_DL,0,fp);
if (!eNB->dlsch[i][j]) {
LOG_E(PHY,"Can't get eNB dlsch structures for UE %d \n", i);
exit(-1);
} else {
eNB->dlsch[i][j]->rnti=0;
LOG_D(PHY,"dlsch[%d][%d] => %p rnti:%d\n",i,j,eNB->dlsch[i][j], eNB->dlsch[i][j]->rnti);
}
}
LOG_I(PHY,"Allocating Transport Channel Buffer for ULSCH, UE %d\n",i);
eNB->ulsch[1+i] = new_eNB_ulsch(MAX_TURBO_ITERATIONS,fp->N_RB_UL, 0);
if (!eNB->ulsch[1+i]) {
LOG_E(PHY,"Can't get eNB ulsch structures\n");
exit(-1);
}
// this is the transmission mode for the signalling channels
// this will be overwritten with the real transmission mode by the RRC once the UE is connected
eNB->transmission_mode[i] = fp->nb_antenna_ports_eNB==1 ? 1 : 2;
}
// ULSCH for RA
eNB->ulsch[0] = new_eNB_ulsch(MAX_TURBO_ITERATIONS, fp->N_RB_UL, 0);
if (!eNB->ulsch[0]) {
LOG_E(PHY,"Can't get eNB ulsch structures\n");
exit(-1);
}
eNB->dlsch_SI = new_eNB_dlsch(1,8,NSOFT,fp->N_RB_DL, 0, fp);
LOG_D(PHY,"eNB %d.%d : SI %p\n",eNB->Mod_id,eNB->CC_id,eNB->dlsch_SI);
eNB->dlsch_ra = new_eNB_dlsch(1,8,NSOFT,fp->N_RB_DL, 0, fp);
LOG_D(PHY,"eNB %d.%d : RA %p\n",eNB->Mod_id,eNB->CC_id,eNB->dlsch_ra);
eNB->dlsch_MCH = new_eNB_dlsch(1,8,NSOFT,fp->N_RB_DL, 0, fp);
LOG_D(PHY,"eNB %d.%d : MCH %p\n",eNB->Mod_id,eNB->CC_id,eNB->dlsch_MCH);
eNB->rx_total_gain_dB=130;
for(i=0; i<NUMBER_OF_UE_MAX; i++)
eNB->mu_mimo_mode[i].dl_pow_off = 2;
eNB->check_for_total_transmissions = 0;
eNB->check_for_MUMIMO_transmissions = 0;
eNB->FULL_MUMIMO_transmissions = 0;
eNB->check_for_SUMIMO_transmissions = 0;
fp->pucch_config_common.deltaPUCCH_Shift = 1;
}
void init_eNB_afterRU(void) {
int inst,CC_id,ru_id,i,aa;
PHY_VARS_eNB *eNB;
LOG_I(PHY,"%s() RC.nb_inst:%d\n", __FUNCTION__, RC.nb_inst);
for (inst=0;inst<RC.nb_inst;inst++) {
LOG_I(PHY,"RC.nb_CC[inst]:%d\n", RC.nb_CC[inst]);
for (CC_id=0;CC_id<RC.nb_CC[inst];CC_id++) {
LOG_I(PHY,"RC.nb_CC[inst:%d][CC_id:%d]:%p\n", inst, CC_id, RC.eNB[inst][CC_id]);
eNB = RC.eNB[inst][CC_id];
phy_init_lte_eNB(eNB,0,0);
// map antennas and PRACH signals to eNB RX
if (0) AssertFatal(eNB->num_RU>0,"Number of RU attached to eNB %d is zero\n",eNB->Mod_id);
LOG_I(PHY,"Mapping RX ports from %d RUs to eNB %d\n",eNB->num_RU,eNB->Mod_id);
eNB->frame_parms.nb_antennas_rx = 0;
LOG_I(PHY,"Overwriting eNB->prach_vars.rxsigF[0]:%p\n", eNB->prach_vars.rxsigF[0]);
eNB->prach_vars.rxsigF[0] = (int16_t**)malloc16(64*sizeof(int16_t*));
#ifdef Rel14
for (int ce_level=0;ce_level<4;ce_level++) {
LOG_I(PHY,"Overwriting eNB->prach_vars_br.rxsigF.rxsigF[0]:%p\n", eNB->prach_vars_br.rxsigF[ce_level]);
eNB->prach_vars_br.rxsigF[ce_level] = (int16_t**)malloc16(64*sizeof(int16_t*));
}
#endif
LOG_I(PHY,"eNB->num_RU:%d\n", eNB->num_RU);
for (ru_id=0,aa=0;ru_id<eNB->num_RU;ru_id++) {
eNB->frame_parms.nb_antennas_rx += eNB->RU_list[ru_id]->nb_rx;
AssertFatal(eNB->RU_list[ru_id]->common.rxdataF!=NULL,
"RU %d : common.rxdataF is NULL\n",
eNB->RU_list[ru_id]->idx);
AssertFatal(eNB->RU_list[ru_id]->prach_rxsigF!=NULL,
"RU %d : prach_rxsigF is NULL\n",
eNB->RU_list[ru_id]->idx);
for (i=0;i<eNB->RU_list[ru_id]->nb_rx;aa++,i++) {
LOG_I(PHY,"Attaching RU %d antenna %d to eNB antenna %d\n",eNB->RU_list[ru_id]->idx,i,aa);
eNB->prach_vars.rxsigF[0][aa] = eNB->RU_list[ru_id]->prach_rxsigF[i];
#ifdef Rel14
for (int ce_level=0;ce_level<4;ce_level++)
eNB->prach_vars_br.rxsigF[ce_level][aa] = eNB->RU_list[ru_id]->prach_rxsigF_br[ce_level][i];
#endif
eNB->common_vars.rxdataF[aa] = eNB->RU_list[ru_id]->common.rxdataF[i];
}
}
/* TODO: review this code, there is something wrong.
* In monolithic mode, we come here with nb_antennas_rx == 0
* (not tested in other modes).
*/
if (eNB->frame_parms.nb_antennas_rx < 1)
{
LOG_I(PHY, "%s() ************* DJP ***** eNB->frame_parms.nb_antennas_rx:%d - GOING TO HARD CODE TO 1", __FUNCTION__, eNB->frame_parms.nb_antennas_rx);
eNB->frame_parms.nb_antennas_rx = 1;
}
else
{
//LOG_I(PHY," Delete code\n");
}
if (eNB->frame_parms.nb_antennas_tx < 1)
{
LOG_I(PHY, "%s() ************* DJP ***** eNB->frame_parms.nb_antennas_tx:%d - GOING TO HARD CODE TO 1", __FUNCTION__, eNB->frame_parms.nb_antennas_tx);
eNB->frame_parms.nb_antennas_tx = 1;
}
else
{
//LOG_I(PHY," Delete code\n");
}
AssertFatal(eNB->frame_parms.nb_antennas_rx >0,
"inst %d, CC_id %d : nb_antennas_rx %d\n",inst,CC_id,eNB->frame_parms.nb_antennas_rx);
LOG_I(PHY,"inst %d, CC_id %d : nb_antennas_rx %d\n",inst,CC_id,eNB->frame_parms.nb_antennas_rx);
init_transport(eNB);
//init_precoding_weights(RC.eNB[inst][CC_id]);
}
init_eNB_proc(inst);
}
for (ru_id=0;ru_id<RC.nb_RU;ru_id++) {
AssertFatal(RC.ru[ru_id]!=NULL,"ru_id %d is null\n",ru_id);
RC.ru[ru_id]->wakeup_rxtx = wakeup_rxtx;
RC.ru[ru_id]->wakeup_prach_eNB = wakeup_prach_eNB;
RC.ru[ru_id]->wakeup_prach_eNB_br = wakeup_prach_eNB_br;
RC.ru[ru_id]->eNB_top = eNB_top;
}
}
void init_eNB(int single_thread_flag,int wait_for_sync) {
int CC_id;
int inst;
PHY_VARS_eNB *eNB;
LOG_I(PHY,"[lte-softmodem.c] eNB structure about to allocated RC.nb_L1_inst:%d RC.nb_L1_CC[0]:%d\n",RC.nb_L1_inst,RC.nb_L1_CC[0]);
if (RC.eNB == NULL) RC.eNB = (PHY_VARS_eNB***) malloc(RC.nb_L1_inst*sizeof(PHY_VARS_eNB **));
LOG_I(PHY,"[lte-softmodem.c] eNB structure RC.eNB allocated\n");
for (inst=0;inst<RC.nb_L1_inst;inst++) {
if (RC.eNB[inst] == NULL) RC.eNB[inst] = (PHY_VARS_eNB**) malloc(RC.nb_CC[inst]*sizeof(PHY_VARS_eNB *));
for (CC_id=0;CC_id<RC.nb_L1_CC[inst];CC_id++) {
if (RC.eNB[inst][CC_id] == NULL) RC.eNB[inst][CC_id] = (PHY_VARS_eNB*) malloc(sizeof(PHY_VARS_eNB));
eNB = RC.eNB[inst][CC_id];
eNB->abstraction_flag = 0;
eNB->single_thread_flag = single_thread_flag;
LOG_I(PHY,"Initializing eNB %d CC_id %d single_thread_flag:%d\n",inst,CC_id,single_thread_flag);
#ifndef OCP_FRAMEWORK
LOG_I(PHY,"Initializing eNB %d CC_id %d\n",inst,CC_id);
#endif
eNB->td = ulsch_decoding_data;//(single_thread_flag==1) ? ulsch_decoding_data_2thread : ulsch_decoding_data;
eNB->te = dlsch_encoding;//(single_thread_flag==1) ? dlsch_encoding_2threads : dlsch_encoding;
LOG_I(PHY,"Registering with MAC interface module\n");
AssertFatal((eNB->if_inst = IF_Module_init(inst))!=NULL,"Cannot register interface");
eNB->if_inst->schedule_response = schedule_response;
eNB->if_inst->PHY_config_req = phy_config_request;
memset((void*)&eNB->UL_INFO,0,sizeof(eNB->UL_INFO));
memset((void*)&eNB->Sched_INFO,0,sizeof(eNB->Sched_INFO));
LOG_I(PHY,"Setting indication lists\n");
eNB->UL_INFO.rx_ind.rx_indication_body.rx_pdu_list = eNB->rx_pdu_list;
eNB->UL_INFO.crc_ind.crc_indication_body.crc_pdu_list = eNB->crc_pdu_list;
eNB->UL_INFO.sr_ind.sr_indication_body.sr_pdu_list = eNB->sr_pdu_list;
eNB->UL_INFO.harq_ind.harq_indication_body.harq_pdu_list = eNB->harq_pdu_list;
eNB->UL_INFO.cqi_ind.cqi_pdu_list = eNB->cqi_pdu_list;
eNB->UL_INFO.cqi_ind.cqi_raw_pdu_list = eNB->cqi_raw_pdu_list;
eNB->prach_energy_counter = 0;
}
}
LOG_I(PHY,"[lte-softmodem.c] eNB structure allocated\n");
}
void stop_eNB(int nb_inst) {
for (int inst=0;inst<nb_inst;inst++) {
LOG_I(PHY,"Killing eNB %d processing threads\n",inst);
kill_eNB_proc(inst);
}
}
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