Commit 59752607 authored by gauthier's avatar gauthier

Sebastian Held patches15/0008-cleaned-UE_thread_synch.patch

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7310 818b1a75-f10b-46b9-bf7c-635c3b92a50f
parent 48d1962a
......@@ -450,7 +450,6 @@ _gtpurh_tg4_rem(struct sk_buff *orig_skb_pP, const struct xt_action_param *par_p
return NF_DROP;
}
skb_reserve(new_skb_p, LL_MAX_HEADER + ntohs(iph2_p->tot_len));
new_skb_p->protocol = skb_p->protocol;
......
......@@ -421,19 +421,23 @@ typedef struct {
int instance_cnt_tx;
/// \brief Instance count of RX processing thread (-1 means ready, 0 means busy)
int instance_cnt_rx;
/// \brief Instance cound of initial synchronization thread (-1 means ready, 0 means busy)
/// \brief Instance count of initial synchronization thread (-1 means ready, 0 means busy).
/// Protected by mutex \ref mutex_synch and condition \ref cond_synch.
int instance_cnt_synch;
/// \brief Condition variable for TX processing thread
pthread_cond_t cond_tx;
/// \brief Condition variable for RX processing thread
pthread_cond_t cond_rx;
/// \brief Condition variable for initial synchronization thread
/// \brief Condition variable for initial synchronization thread.
/// The corresponding mutex is \ref mutex_synch.
pthread_cond_t cond_synch;
/// \brief Mutex for TX processing thread
pthread_mutex_t mutex_tx;
/// \brief Mutex for RX processing thread
pthread_mutex_t mutex_rx;
/// \brief Mutex for initial synchronization thread
/// \brief Mutex for initial synchronization thread.
/// Used to protect \ref instance_cnt_synch.
/// \sa cond_synch
pthread_mutex_t mutex_synch;
/// \brief Pthread structure for RX processing thread
pthread_t thread_rx;
......
......@@ -185,7 +185,7 @@ struct sched_param sched_param_dlsch;
pthread_cond_t sync_cond;
pthread_mutex_t sync_mutex;
int sync_var=-1;
int sync_var=-1; //!< protected by mutex \ref sync_mutex.
......
......@@ -193,25 +193,28 @@ static const eutra_band_t eutra_bands[] = {
{44, 703 * MHz, 803 * MHz, 703 * MHz, 803 * MHz, TDD},
};
/*!
* \brief This is the UE synchronize thread.
* It performs band scanning.
* \param arg is a pointer to a \ref PHY_VARS_UE structure.
* \returns a pointer to an int. The storage is not on the heap and must not be freed.
*/
static void *UE_thread_synch(void *arg)
{
int i,hw_slot_offset;
PHY_VARS_UE *UE = arg;
static int UE_thread_synch_retval;
int i, hw_slot_offset;
PHY_VARS_UE *UE = (PHY_VARS_UE*) arg;
int current_band = 0;
int current_offset = 0;
sync_mode_t sync_mode = pss;
int card;
int ind;
// int CC_id;
// int k;
int found;
UE->is_synchronized = 0;
printf("UE_thread_sync in with PHY_vars_UE %p\n",arg);
printf("waiting for sync (UE_thread_synch) \n");
pthread_mutex_lock(&sync_mutex);
printf("Locked sync_mutex, waiting (UE_sync_thread)\n");
......@@ -224,14 +227,14 @@ static void *UE_thread_synch(void *arg)
printf("starting UE synch thread\n");
ind = 0;
found = 0;
current_band = eutra_bands[ind].band;
if (UE->UE_scan == 0) {
do {
printf("Scanning band %d, dl_min %u\n",current_band,eutra_bands[ind].dl_min);
current_band = eutra_bands[ind].band;
printf( "Scanning band %d, dl_min %"PRIu32"\n", current_band, eutra_bands[ind].dl_min );
if ((eutra_bands[ind].dl_min <= downlink_frequency[0][0]) && (eutra_bands[ind].dl_max>= downlink_frequency[0][0])) {
if ((eutra_bands[ind].dl_min <= downlink_frequency[0][0]) && (eutra_bands[ind].dl_max >= downlink_frequency[0][0])) {
for (card=0; card<MAX_NUM_CCs; card++)
for (i=0; i<4; i++)
uplink_frequency_offset[card][i] = eutra_bands[ind].ul_min - eutra_bands[ind].dl_min;
......@@ -241,12 +244,11 @@ static void *UE_thread_synch(void *arg)
}
ind++;
current_band = eutra_bands[ind].band;
} while (current_band < 44);
} while (current_band < sizeof(eutra_bands) / sizeof(eutra_bands[0]));
if (found == 0) {
exit_fun("Can't find EUTRA band for frequency");
oai_exit=1;
return &UE_thread_synch_retval;
}
}
......@@ -276,11 +278,11 @@ static void *UE_thread_synch(void *arg)
break;
default:
printf("Unknown number of RBs %d\n",UE->lte_frame_parms.N_RB_DL);
printf( "Unknown number of RBs %d\n", UE->lte_frame_parms.N_RB_DL );
break;
}
printf("UE synch: setting RX gain (%d,%d) to %f\n",card,i,openair0_cfg[card].rx_gain[i]);
printf( "UE synch: setting RX gain (%d,%d) to %f\n", card, i, openair0_cfg[card].rx_gain[i] );
#endif
}
......@@ -289,46 +291,43 @@ static void *UE_thread_synch(void *arg)
#endif
}
#ifdef OAI_USRP
#ifndef USRP_DEBUG
openair0_set_rx_frequencies(&openair0,&openair0_cfg[0]);
openair0_set_gains(&openair0,&openair0_cfg[0]);
#endif
#if defined(OAI_USRP) && !defined(USRP_DEBUG)
openair0_set_rx_frequencies( &openair0, &openair0_cfg[0] );
openair0_set_gains( &openair0, &openair0_cfg[0] );
#endif
} else {
LOG_D(PHY,"[SCHED][UE] Check absolute frequency %u (oai_exit %d)\n",downlink_frequency[0][0],oai_exit);
// UE_scan == 0
LOG_D( PHY, "[SCHED][UE] Check absolute frequency %"PRIu32" (oai_exit %d)\n", downlink_frequency[0][0], oai_exit );
sync_mode=pbch;
sync_mode = pbch;
}
while (oai_exit==0) {
if (pthread_mutex_lock(&UE->mutex_synch) != 0) {
LOG_E(PHY,"[SCHED][UE] error locking mutex for UE initial synch thread\n");
LOG_E( PHY, "[SCHED][UE] error locking mutex for UE initial synch thread\n" );
exit_fun("noting to add");
} else {
while (UE->instance_cnt_synch < 0) {
pthread_cond_wait(&UE->cond_synch,&UE->mutex_synch);
}
return &UE_thread_synch_retval;
}
if (pthread_mutex_unlock(&UE->mutex_synch) != 0) {
LOG_E(PHY,"[SCHED][eNB] error unlocking mutex for UE Initial Synch thread\n");
exit_fun("nothing to add");
}
while (UE->instance_cnt_synch < 0) {
pthread_cond_wait( &UE->cond_synch, &UE->mutex_synch );
}
} // mutex_lock
if (pthread_mutex_unlock(&UE->mutex_synch) != 0) {
LOG_E( PHY, "[SCHED][eNB] error unlocking mutex for UE Initial Synch thread\n" );
exit_fun("nothing to add");
return &UE_thread_synch_retval;
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SYNCH,1);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SYNCH, 1 );
//printf("Sync_mode %d\n",sync_mode);
switch (sync_mode) {
case pss:
LOG_I(PHY,"[SCHED][UE] Scanning band %d (%d), freq %u\n",bands_to_scan.band_info[current_band].band, current_band,bands_to_scan.band_info[current_band].dl_min+current_offset);
lte_sync_timefreq(UE,current_band,bands_to_scan.band_info[current_band].dl_min+current_offset);
current_offset += 20000000; // increase by 20 MHz
if (current_offset > bands_to_scan.band_info[current_band].dl_max-bands_to_scan.band_info[current_band].dl_min) {
......@@ -390,26 +389,11 @@ static void *UE_thread_synch(void *arg)
break;
case pbch:
// printf("synch: Running initial sync\n");
// This is a hack to fix a bug when using USRP
// FIXME is this necessary anymore? Which bug is fixed by this hack?
memset(PHY_vars_UE_g[0][0]->lte_ue_common_vars.rxdata[0],0,1024);
if (initial_sync(UE,UE->mode)==0) {
/*
lte_adjust_synch(&PHY_vars_UE_g[0]->lte_frame_parms,
PHY_vars_UE_g[0],
0,
1,
16384);
*/
//for better visualization afterwards
/*
for (aa=0; aa<PHY_vars_UE_g[0]->lte_frame_parms.nb_antennas_rx; aa++)
memset(PHY_vars_UE_g[0]->lte_ue_common_vars.rxdata[aa],0,
PHY_vars_UE_g[0]->lte_frame_parms.samples_per_tti*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*sizeof(int));
*/
if (initial_sync( UE, UE->mode ) == 0) {
UE->is_synchronized = 1;
#ifndef EXMIMO
UE->slot_rx = 0;
......@@ -419,10 +403,11 @@ static void *UE_thread_synch(void *arg)
UE->slot_tx = 2;
#endif
hw_slot_offset = (UE->rx_offset<<1) / UE->lte_frame_parms.samples_per_tti;
LOG_I(HW,"Got synch: hw_slot_offset %d\n",hw_slot_offset);
} else { // intial_synch
LOG_I( HW, "Got synch: hw_slot_offset %d\n", hw_slot_offset );
} else {
// initial sync failed
// calculate new offset and try again
if (openair_daq_vars.freq_offset >= 0) {
openair_daq_vars.freq_offset += 100;
openair_daq_vars.freq_offset *= -1;
......@@ -431,22 +416,22 @@ static void *UE_thread_synch(void *arg)
}
if (abs(openair_daq_vars.freq_offset) > 7500) {
LOG_I(PHY,"[initial_sync] No cell synchronization found, abandoning\n");
LOG_I( PHY, "[initial_sync] No cell synchronization found, abandoning\n" );
mac_xface->macphy_exit("No cell synchronization found, abandoning");
return 0; // not reached
return &UE_thread_synch_retval; // not reached
}
LOG_I(PHY,"[initial_sync] trying carrier off %d Hz, rxgain %d (DL %u, UL %u)\n",openair_daq_vars.freq_offset,
LOG_I( PHY, "[initial_sync] trying carrier off %d Hz, rxgain %d (DL %u, UL %u)\n", openair_daq_vars.freq_offset,
UE->rx_total_gain_dB,
downlink_frequency[0][0]+openair_daq_vars.freq_offset,
downlink_frequency[0][0]+uplink_frequency_offset[0][0]+openair_daq_vars.freq_offset);
downlink_frequency[0][0]+uplink_frequency_offset[0][0]+openair_daq_vars.freq_offset );
for (card=0; card<MAX_CARDS; card++) {
for (i=0; i<openair0_cfg[card].rx_num_channels; i++) {
openair0_cfg[card].rx_freq[i] = downlink_frequency[card][i]+openair_daq_vars.freq_offset;
openair0_cfg[card].tx_freq[i] = downlink_frequency[card][i]+uplink_frequency_offset[card][i]+openair_daq_vars.freq_offset;
#ifdef OAI_USRP
openair0_cfg[card].rx_gain[i] = UE->rx_total_gain_dB-USRP_GAIN_OFFSET; // 65 calibrated for USRP B210 @ 2.6 GHz
openair0_cfg[card].rx_gain[i] = UE->rx_total_gain_dB-USRP_GAIN_OFFSET;
switch(UE->lte_frame_parms.N_RB_DL) {
case 6:
......@@ -465,31 +450,13 @@ static void *UE_thread_synch(void *arg)
printf("Unknown number of RBs %d\n",UE->lte_frame_parms.N_RB_DL);
break;
}
// printf("UE synch: setting RX gain (%d,%d) to %d\n",card,i,openair0_cfg[card].rx_gain[i]);
#endif
}
#ifdef EXMIMO
//openair0_config(&openair0_cfg[card],1);
//rt_sleep_ns(FRAME_PERIOD);
#endif
}
#ifdef OAI_USRP
#ifndef USRP_DEBUG
openair0_set_frequencies(&openair0,&openair0_cfg[0]);
// openair0_set_gains(&openair0,&openair0_cfg[0]);
#endif
#if defined(OAI_USRP) && !defined(USRP_DEBUG)
openair0_set_frequencies( &openair0, &openair0_cfg[0] );
#endif
// openair0_dump_config(&openair0_cfg[0],UE_flag);
// rt_sleep_ns(FRAME_PERIOD);
} // initial_sync=0
break;
......@@ -498,22 +465,26 @@ static void *UE_thread_synch(void *arg)
default:
break;
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SYNCH,0);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SYNCH, 0 );
if (pthread_mutex_lock(&UE->mutex_synch) != 0) {
printf("[openair][SCHED][eNB] error locking mutex for UE synch\n");
} else {
UE->instance_cnt_synch--;
LOG_E( PHY, "[SCHED][UE] error locking mutex for UE synch\n" );
exit_fun("noting to add");
return &UE_thread_synch_retval;
}
if (pthread_mutex_unlock(&UE->mutex_synch) != 0) {
printf("[openair][SCHED][eNB] error unlocking mutex for UE synch\n");
}
UE->instance_cnt_synch--;
if (pthread_mutex_unlock(&UE->mutex_synch) != 0) {
LOG_E( PHY, "[SCHED][UE] error unlocking mutex for UE synch\n" );
exit_fun("noting to add");
return &UE_thread_synch_retval;
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SYNCH,0);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SYNCH, 0 );
} // while !oai_exit
return(0);
return &UE_thread_synch_retval;
}
static void *UE_thread_tx(void *arg)
......
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