lte-softmodem.c 103 KB
Newer Older
1
/*******************************************************************************
2
    OpenAirInterface
3
    Copyright(c) 1999 - 2014 Eurecom
4

5 6 7 8
    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.
9 10


11 12 13 14
    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.
15

16
    You should have received a copy of the GNU General Public License
17 18
    along with OpenAirInterface.The full GNU General Public License is
    included in this distribution in the file called "COPYING". If not,
19
    see <http://www.gnu.org/licenses/>.
20

21 22 23 24
   Contact Information
   OpenAirInterface Admin: openair_admin@eurecom.fr
   OpenAirInterface Tech : openair_tech@eurecom.fr
   OpenAirInterface Dev  : openair4g-devel@eurecom.fr
25

ghaddab's avatar
ghaddab committed
26
   Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
27

28
*******************************************************************************/
29 30

/*! \file lte-softmodem.c
31
 * \brief main program to control HW and scheduling
32
 * \author R. Knopp, F. Kaltenberger, Navid Nikaein
33 34 35
 * \date 2012
 * \version 0.1
 * \company Eurecom
36
 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr
37 38 39
 * \note
 * \warning
 */
40
#define _GNU_SOURCE
41 42 43 44 45 46 47 48 49 50
#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>
51
#include <linux/sched.h>
52 53 54
#include <signal.h>
#include <execinfo.h>
#include <getopt.h>
55
#include <syscall.h>
56 57

#include "rt_wrapper.h"
58 59
#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all

60
#include "assertions.h"
61
#include "msc.h"
62 63 64

#ifdef EMOS
#include <gps.h>
jiangx's avatar
jiangx committed
65
struct gps_fix_t dummy_gps_data;
66 67 68
#endif

#include "PHY/types.h"
69

70
#include "PHY/defs.h"
71
#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all
72
//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
73

knopp's avatar
knopp committed
74
#ifdef EXMIMO
75
#include "openair0_lib.h"
76 77 78 79
#else
#include "../../ARCH/COMMON/common_lib.h"
#endif

80
//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
81 82 83

#include "PHY/vars.h"
#include "MAC_INTERFACE/vars.h"
84
//#include "SCHED/defs.h"
85 86 87 88 89 90 91 92 93 94 95 96
#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"
97
#include "LAYER2/MAC/proto.h"
98 99 100 101 102 103 104 105 106
#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"
nikaeinn's avatar
nikaeinn committed
107
#include "UTIL/OTG/otg_tx.h"
108
#include "UTIL/OTG/otg_externs.h"
109 110
#include "UTIL/MATH/oml.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
111
#include "UTIL/OPT/opt.h"
112
#include "enb_config.h"
nikaeinn's avatar
nikaeinn committed
113
//#include "PHY/TOOLS/time_meas.h"
114

115 116 117 118
#ifndef OPENAIR2
#include "UTIL/OTG/otg_vars.h"
#endif

119 120
#if defined(ENABLE_ITTI)
# include "intertask_interface_init.h"
121
# include "create_tasks.h"
122 123
# if defined(ENABLE_USE_MME)
#   include "s1ap_eNB.h"
124
#ifdef PDCP_USE_NETLINK
125 126
#   include "SIMULATION/ETH_TRANSPORT/proto.h"
#endif
127
# endif
128 129
#endif

130 131 132
#ifdef XFORMS
#include "PHY/TOOLS/lte_phy_scope.h"
#include "stats.h"
133 134 135 136 137
#endif

#define FRAME_PERIOD    100000000ULL
#define DAQ_PERIOD      66667ULL

Florian Kaltenberger's avatar
Florian Kaltenberger committed
138
//#define DEBUG_THREADS 1
139

140 141
//#define USRP_DEBUG 1

142
struct timing_info_t {
143 144 145 146
    //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;
147 148 149
} timing_info;


150

151
openair0_config_t openair0_cfg[MAX_CARDS];
152

153 154
int32_t **rxdata;
int32_t **txdata;
155 156
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]);
157

158
void fill_ue_band_info(void);
159
#ifdef XFORMS
160
// current status is that every UE has a DL scope for a SINGLE eNB (eNB_id=0)
161
// at eNB 0, an UL scope for every UE
162 163
FD_lte_phy_scope_ue  *form_ue[NUMBER_OF_UE_MAX];
FD_lte_phy_scope_enb *form_enb[NUMBER_OF_UE_MAX];
164
FD_stats_form                  *form_stats=NULL,*form_stats_l2=NULL;
165
char title[255];
166
unsigned char                   scope_enb_num_ue = 1;
167 168 169
#endif //XFORMS

#ifdef RTAI
170

171 172
static long                      main_eNB_thread;
static long                      main_ue_thread;
173

174
#else
175 176
pthread_t                       main_eNB_thread;
pthread_t                       main_ue_thread;
177

178
pthread_attr_t                  attr_dlsch_threads;
179 180
pthread_attr_t                  attr_UE_thread;

181
#ifndef LOWLATENCY
182
struct sched_param              sched_param_dlsch;
183
#endif
184
#endif
185

186 187
pthread_cond_t sync_cond;
pthread_mutex_t sync_mutex;
188 189
int sync_var=-1;

190

191 192


193
struct sched_param              sched_param_UE_thread;
194

195 196
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];
197
#ifndef LOWLATENCY
198 199
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];
200
#endif
201
#ifdef XFORMS
202
static pthread_t                forms_thread; //xforms
203 204 205
#endif
#ifdef EMOS
static pthread_t                thread3; //emos
jiangx's avatar
jiangx committed
206
static pthread_t                thread4; //GPS
207
#endif
208

209
openair0_device openair0;
210

211

212
/*
213 214 215
  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;
216 217 218 219
*/
//extern unsigned int bigphys_top;
//extern unsigned int mem_base;

220
int                             card = 0;
221

222

223
#if defined(ENABLE_ITTI)
224 225
static volatile int             start_eNB = 0;
static volatile int             start_UE = 0;
226
#endif
227 228 229 230 231 232
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};

233

234
static char                     UE_flag=0;
235 236
//static uint8_t                  eNB_id=0,UE_id=0;

237

238
uint32_t                 downlink_frequency[MAX_NUM_CCs][4];
239
int32_t                  uplink_frequency_offset[MAX_NUM_CCs][4];
gauthier's avatar
gauthier committed
240

241
openair0_rf_map rf_map[MAX_NUM_CCs];
242

243
static char                    *conf_config_file_name = NULL;
244
#if defined(ENABLE_ITTI)
245
static char                    *itti_dump_file = NULL;
246 247
#endif

248 249 250 251
int UE_scan = 1;
runmode_t mode = normal_txrx;


252
#ifdef EXMIMO
253 254 255 256
#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
257 258
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}};
259
#endif
260
// these are for EXMIMO2 target only
261
/*
262 263 264
  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};
265
 */
266
// these are for EXMIMO2 card 39
267 268 269 270 271 272
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};
273 274 275
#if MAX_NUM_CCs == 1
rx_gain_t                rx_gain_mode[MAX_NUM_CCs][4] = {{max_gain,max_gain,max_gain,max_gain}};
#else
276
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}};
277
#endif
gauthier's avatar
gauthier committed
278
#else
kortke's avatar
kortke committed
279 280
double tx_gain[MAX_NUM_CCs][4] = {{20,0,0,0}};
double rx_gain[MAX_NUM_CCs][4] = {{110,0,0,0}};
gauthier's avatar
gauthier committed
281
#endif
282

283 284
double sample_rate=30.72e6;
double bw = 14e6;
285

286
static int                      tx_max_power[MAX_NUM_CCs]; /* =  {0,0}*/;
287

knopp's avatar
knopp committed
288
#ifndef EXMIMO
289 290 291
char ref[128] = "internal";
char channels[128] = "0";

292 293
unsigned int samples_per_frame = 307200;
unsigned int tx_forward_nsamps;
294 295 296
int tx_delay;

#endif
297 298

int                      rx_input_level_dBm;
299
static int                      online_log_messages=0;
300
#ifdef XFORMS
301
extern int                      otg_enabled;
302
static char                     do_forms=0;
303
#else
304
int                             otg_enabled;
305
#endif
306
//int                             number_of_cards =   1;
307
#ifdef EXMIMO
308 309
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
310
#endif
311

312
static LTE_DL_FRAME_PARMS      *frame_parms[MAX_NUM_CCs];
313

314
int multi_thread=1;
Florian Kaltenberger's avatar
Florian Kaltenberger committed
315
uint32_t target_dl_mcs = 28; //maximum allowed mcs
316
uint32_t target_ul_mcs = 10;
317 318
uint8_t exit_missed_slots=1;
uint64_t num_missed_slots=0; // counter for the number of missed slots
319

320

321
time_stats_t softmodem_stats_mt; // main thread
322
time_stats_t softmodem_stats_hw; //  hw acquisition
323 324
time_stats_t softmodem_stats_tx_sf[10]; // total tx time
time_stats_t softmodem_stats_rx_sf[10]; // total rx time
nikaeinn's avatar
nikaeinn committed
325 326
void reset_opp_meas(void);
void print_opp_meas(void);
327
int transmission_mode=1;
328

329

330
int16_t           glog_level         = LOG_INFO;
331
int16_t           glog_verbosity     = LOG_MED;
332
int16_t           hw_log_level       = LOG_INFO;
333
int16_t           hw_log_verbosity   = LOG_MED;
334
int16_t           phy_log_level      = LOG_INFO;
335
int16_t           phy_log_verbosity  = LOG_MED;
336
int16_t           mac_log_level      = LOG_INFO;
337
int16_t           mac_log_verbosity  = LOG_MED;
338
int16_t           rlc_log_level      = LOG_INFO;
339
int16_t           rlc_log_verbosity  = LOG_MED;
340
int16_t           pdcp_log_level     = LOG_INFO;
341
int16_t           pdcp_log_verbosity = LOG_MED;
Florian Kaltenberger's avatar
Florian Kaltenberger committed
342
int16_t           rrc_log_level      = LOG_INFO;
343
int16_t           rrc_log_verbosity  = LOG_MED;
344 345 346
int16_t           opt_log_level      = LOG_INFO;
int16_t           opt_log_verbosity  = LOG_MED;

347 348 349 350 351 352
# 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
353 354 355
#if defined (ENABLE_SECURITY)
int16_t           osa_log_level      = LOG_INFO;
int16_t           osa_log_verbosity  = LOG_MED;
356
#endif
357

358 359 360

#ifdef ETHERNET
char rrh_eNB_ip[20] = "127.0.0.1";
knopp's avatar
knopp committed
361
int rrh_eNB_port = 50000;
362
char *rrh_UE_ip = "127.0.0.1";
363
int rrh_UE_port = 51000;
364 365 366
#endif

char uecap_xer[1024],uecap_xer_in=0;
367 368
extern void *UE_thread(void *arg);
extern void init_UE_threads(void);
369

370
unsigned int build_rflocal(int txi, int txq, int rxi, int rxq)
371
{
372
  return (txi + (txq<<6) + (rxi<<12) + (rxq<<18));
373 374 375
}
unsigned int build_rfdc(int dcoff_i_rxfe, int dcoff_q_rxfe)
{
376
  return (dcoff_i_rxfe + (dcoff_q_rxfe<<8));
377 378
}

379
#ifdef LOWLATENCY
380 381
int sched_setattr(pid_t pid, const struct sched_attr *attr, unsigned int flags)
{
382 383 384 385 386

  return syscall(__NR_sched_setattr, pid, attr, flags);
}


387 388
int sched_getattr(pid_t pid,struct sched_attr *attr,unsigned int size, unsigned int flags)
{
389 390 391

  return syscall(__NR_sched_getattr, pid, attr, size, flags);
}
392
#endif
393
#if !defined(ENABLE_ITTI)
394 395 396 397 398 399 400 401
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);
402

403 404 405 406
    // print out all the frames to stderr
    fprintf(stderr, "Error: signal %d:\n", sig);
    backtrace_symbols_fd(array, size, 2);
    exit(-1);
407 408
  } else {
    printf("trying to exit gracefully...\n");
409
    oai_exit = 1;
410 411
  }
}
412
#endif
413 414 415

void exit_fun(const char* s)
{
416
  if (s != NULL) {
417
    printf("%s %s() Exiting OAI softmodem: %s\n",__FILE__, __FUNCTION__, s);
418 419 420 421 422
  }

  oai_exit = 1;

#if defined(ENABLE_ITTI)
Florian Kaltenberger's avatar
Florian Kaltenberger committed
423
  sleep(1); //allow lte-softmodem threads to exit first
424
  itti_terminate_tasks (TASK_UNKNOWN);
425
#endif
426 427 428 429 430 431

  //rt_sleep_ns(FRAME_PERIOD);

  //exit (-1);
}

432 433
static int latency_target_fd = -1;
static int32_t latency_target_value = 0;
434
/* Latency trick - taken from cyclictest.c
435 436 437 438 439 440 441 442 443
 * 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
 */
444 445 446 447
static void set_latency_target(void)
{
  struct stat s;
  int ret;
448

449 450
  if (stat("/dev/cpu_dma_latency", &s) == 0) {
    latency_target_fd = open("/dev/cpu_dma_latency", O_RDWR);
451

452 453
    if (latency_target_fd == -1)
      return;
454

455
    ret = write(latency_target_fd, &latency_target_value, 4);
456

457 458 459 460 461
    if (ret == 0) {
      printf("# error setting cpu_dma_latency to %d!: %s\n", latency_target_value, strerror(errno));
      close(latency_target_fd);
      return;
    }
462

463 464 465
    printf("# /dev/cpu_dma_latency set to %dus\n", latency_target_value);
  }
}
466

467
#ifdef XFORMS
468

469 470
void reset_stats(FL_OBJECT *button, long arg)
{
471 472
  int i,j,k;
  PHY_VARS_eNB *phy_vars_eNB = PHY_vars_eNB_g[0][0];
473 474 475 476 477 478 479

  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;
480
      }
481

482 483 484
      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;
485 486 487 488 489 490

      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;
491
      }
492
    }
493

494 495 496
    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;
497 498 499
  }
}

500 501
static void *scope_thread(void *arg)
{
502
  char stats_buffer[16384];
503
# ifdef ENABLE_XFORMS_WRITE_STATS
504
  FILE *UE_stats, *eNB_stats;
505
# endif
506
  int len = 0;
507
  struct sched_param sched_param;
508
  int UE_id;
509

510
  sched_param.sched_priority = sched_get_priority_min(SCHED_FIFO)+1;
511
  sched_setscheduler(0, SCHED_FIFO,&sched_param);
512

513
  printf("Scope thread has priority %d\n",sched_param.sched_priority);
514

515
# ifdef ENABLE_XFORMS_WRITE_STATS
516 517

  if (UE_flag==1)
518
    UE_stats  = fopen("UE_stats.txt", "w");
519
  else
520
    eNB_stats = fopen("eNB_stats.txt", "w");
521

522
#endif
523

524 525
  while (!oai_exit) {
    if (UE_flag==1) {
526
      len = dump_ue_stats (PHY_vars_UE_g[0][0], stats_buffer, 0, mode,rx_input_level_dBm);
527
      fl_set_object_label(form_stats->stats_text, stats_buffer);
528

529 530 531 532 533
      phy_scope_UE(form_ue[0],
                   PHY_vars_UE_g[0][0],
                   0,
                   0,7);

534
    } else {
535 536
#ifdef OPENAIR2
      len = dump_eNB_l2_stats (stats_buffer, 0);
537
      fl_set_object_label(form_stats_l2->stats_text, stats_buffer);
538 539
#endif
      len = dump_eNB_stats (PHY_vars_eNB_g[0][0], stats_buffer, 0);
540

541
      if (MAX_NUM_CCs>1)
542 543
        len += dump_eNB_stats (PHY_vars_eNB_g[0][1], &stats_buffer[len], 0);

544 545
      fl_set_object_label(form_stats->stats_text, stats_buffer);

546 547 548 549
      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);
550
      }
551

552
    }
553

554
    //printf("doing forms\n");
Florian Kaltenberger's avatar
Florian Kaltenberger committed
555 556
    //usleep(100000); // 100 ms
    sleep(1);
557
  }
558 559

  printf("%s",stats_buffer);
560

561
# ifdef ENABLE_XFORMS_WRITE_STATS
562

563 564 565 566 567 568
  if (UE_flag==1) {
    if (UE_stats) {
      rewind (UE_stats);
      fwrite (stats_buffer, 1, len, UE_stats);
      fclose (UE_stats);
    }
569
  } else {
570 571 572 573 574 575
    if (eNB_stats) {
      rewind (eNB_stats);
      fwrite (stats_buffer, 1, len, eNB_stats);
      fclose (eNB_stats);
    }
  }
576

577
# endif
578

579
  pthread_exit((void*)arg);
580 581 582 583 584 585
}
#endif

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

jiangx's avatar
jiangx committed
586 587 588 589 590 591 592 593
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;

594
  sched_param.sched_priority = sched_get_priority_min(SCHED_FIFO)+1;
jiangx's avatar
jiangx committed
595
  sched_setscheduler(0, SCHED_FIFO,&sched_param);
596

jiangx's avatar
jiangx committed
597 598 599
  printf("GPS thread has priority %d\n",sched_param.sched_priority);

  memset(&dummy_gps_data,0,sizeof(struct gps_fix_t));
600

jiangx's avatar
jiangx committed
601 602
#if GPSD_API_MAJOR_VERSION>=5
  ret = gps_open("127.0.0.1","2947",gps_data_ptr);
603

jiangx's avatar
jiangx committed
604 605 606
  if (ret!=0)
#else
  gps_data_ptr = gps_open("127.0.0.1","2947");
607 608

  if (gps_data_ptr == NULL)
jiangx's avatar
jiangx committed
609
#endif
610 611 612 613 614
  {
    printf("[EMOS] Could not open GPS\n");
    pthread_exit((void*)arg);
  }

jiangx's avatar
jiangx committed
615 616 617 618 619
#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
620 621 622 623
  {
    printf("[EMOS] Error sending command to GPS\n");
    pthread_exit((void*) arg);
  } else
jiangx's avatar
jiangx committed
624 625
    printf("[EMOS] Opened GPS, gps_data=%p\n", gps_data_ptr);

626 627 628

  while (!oai_exit) {
    printf("[EMOS] polling data from gps\n");
jiangx's avatar
jiangx committed
629
#if GPSD_API_MAJOR_VERSION>=5
630 631 632

    if (gps_waiting(gps_data_ptr,500)) {
      if (gps_read(gps_data_ptr) <= 0) {
jiangx's avatar
jiangx committed
633
#else
634 635 636 637 638 639 640 641

    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);
jiangx's avatar
jiangx committed
642
      }
643 644 645 646 647 648 649 650
    } //gps_waiting
    else {
      printf("[EMOS] WARNING: No GPS data available, storing dummy packet\n");
    }

    //rt_sleep_ns(1000000000LL);
    sleep(1);
  } //oai_exit
jiangx's avatar
jiangx committed
651 652 653 654 655

  pthread_exit((void*) arg);

}

656 657 658 659 660 661 662 663 664 665 666
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;
667

jiangx's avatar
jiangx committed
668
  int channel_buffer_size,ret;
669

670 671 672
  time_t timer;
  struct tm *now;

673
  struct sched_param sched_param;
674 675

  sched_param.sched_priority = sched_get_priority_max(SCHED_FIFO)-1;
676
  sched_setscheduler(0, SCHED_FIFO,&sched_param);
677

678
  printf("EMOS thread has priority %d\n",sched_param.sched_priority);
679

680 681 682 683 684 685 686 687 688 689 690 691
  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;

692 693 694 695
  if (fifo2file_buffer == NULL) {
    printf("[EMOS] Cound not allocate memory for fifo2file_buffer\n");
    exit(EXIT_FAILURE);
  }
696

697 698 699 700
  if ((fifo = open(CHANSOUNDER_FIFO_DEV, O_RDONLY)) < 0) {
    fprintf(stderr, "[EMOS] Error opening the fifo\n");
    exit(EXIT_FAILURE);
  }
701 702 703 704 705


  time(&starttime_tmp);
  localtime_r(&starttime_tmp,&starttime);
  snprintf(dumpfile_name,1024,"/tmp/%s_data_%d%02d%02d_%02d%02d%02d.EMOS",
706 707
           (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);
708 709

  dumpfile_id = fopen(dumpfile_name,"w");
710 711 712 713 714

  if (dumpfile_id == NULL) {
    fprintf(stderr, "[EMOS] Error opening dumpfile %s\n",dumpfile_name);
    exit(EXIT_FAILURE);
  }
715 716


jiangx's avatar
jiangx committed
717
  printf("[EMOS] starting dump, channel_buffer_size=%d, fifo %d\n",channel_buffer_size,fifo);
718

719 720 721 722 723 724 725
  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);
726

727 728 729 730
    if (bytes<=0) {
      usleep(100);
      continue;
    }
731

732 733 734
    if (bytes != channel_buffer_size) {
      printf("[EMOS] ERROR! Only got %d bytes instead of %d!\n",bytes,channel_buffer_size);
    }
735

736 737 738 739 740 741
    /*
    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);
    */
742

743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763
    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);
      }
jiangx's avatar
jiangx committed
764

765 766 767 768
      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);
      }
769
    }
770 771
  }

772 773 774
  free(fifo2file_buffer);
  fclose(dumpfile_id);
  close(fifo);
775

776 777 778 779 780
  pthread_exit((void*) arg);

}
#endif

781 782


783
#if defined(ENABLE_ITTI)
784 785 786 787 788
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[] = {".    ", "..   ", "...  ", ".... ", ".....",
789 790
                                " ....", "  ...", "   ..", "    .", "     "
                               };
791 792 793 794 795 796 797
    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);
    }
798

799 800 801 802 803
    LOG_D(EMU,"\n");
  }
}
#endif

804
#if defined(ENABLE_ITTI)
805
void *l2l1_task(void *arg)
806
{
807 808 809 810 811
  MessageDef *message_p = NULL;
  int         result;

  itti_set_task_real_time(TASK_L2L1);
  itti_mark_task_ready(TASK_L2L1);
812

813 814
  if (UE_flag == 0) {
    /* Wait for the initialize message */
815
    do {
816
      if (message_p != NULL) {
817 818
        result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
        AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
819
      }
820

821 822 823
      itti_receive_msg (TASK_L2L1, &message_p);

      switch (ITTI_MSG_ID(message_p)) {
824
      case INITIALIZE_MESSAGE:
825 826 827 828
        /* Start eNB thread */
        LOG_D(EMU, "L2L1 TASK received %s\n", ITTI_MSG_NAME(message_p));
        start_eNB = 1;
        break;
829 830

      case TERMINATE_MESSAGE:
831 832 833 834
        printf("received terminate message\n");
        oai_exit=1;
        itti_exit_task ();
        break;
835 836

      default:
837 838
        LOG_E(EMU, "Received unexpected message %s\n", ITTI_MSG_NAME(message_p));
        break;
839
      }
840
    } while (ITTI_MSG_ID(message_p) != INITIALIZE_MESSAGE);
841

842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862
    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;
863

864 865 866 867 868 869 870 871 872 873 874
    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);
875
  } while(!oai_exit);
876

877
  return NULL;
878 879 880
}
#endif

881

882 883
void do_OFDM_mod_rt(int subframe,PHY_VARS_eNB *phy_vars_eNB)
{
884 885 886 887

  unsigned int aa,slot_offset, slot_offset_F;
  int dummy_tx_b[7680*4] __attribute__((aligned(16)));
  int i, tx_offset;
888
  int slot_sizeF = (phy_vars_eNB->lte_frame_parms.ofdm_symbol_size)*
889
                   ((phy_vars_eNB->lte_frame_parms.Ncp==1) ? 6 : 7);
890 891

  slot_offset_F = (subframe<<1)*slot_sizeF;
892

893 894
  slot_offset = subframe*phy_vars_eNB->lte_frame_parms.samples_per_tti;

895 896
  if ((subframe_select(&phy_vars_eNB->lte_frame_parms,subframe)==SF_DL)||
      ((subframe_select(&phy_vars_eNB->lte_frame_parms,subframe)==SF_S))) {
897 898
    //    LOG_D(HW,"Frame %d: Generating slot %d\n",frame,next_slot);

899

900
    for (aa=0; aa<phy_vars_eNB->lte_frame_parms.nb_antennas_tx; aa++) {
901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926
      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));
927
      }
928 929

      for (i=0; i<phy_vars_eNB->lte_frame_parms.samples_per_tti; i++) {
930 931 932 933 934 935 936 937 938
        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]=
939
#ifdef EXMIMO
940
          ((short*)dummy_tx_b)[2*i]<<4;
941
#else
942
          ((short*)dummy_tx_b)[2*i]<<5;
943
#endif
944
        ((short*)&phy_vars_eNB->lte_eNB_common_vars.txdata[0][aa][tx_offset])[1]=
945
#ifdef EXMIMO
946
          ((short*)dummy_tx_b)[2*i+1]<<4;
947
#else
948
          ((short*)dummy_tx_b)[2*i+1]<<5;
949
#endif
950 951 952 953 954 955
      }
    }
  }
}


956 957 958 959 960 961 962 963 964
/*!
 * \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];
965 966

  eNB_proc_t *proc = (eNB_proc_t*)param;
967 968 969 970

  // set default return value
  eNB_thread_tx_status[proc->subframe] = 0;

971 972
#ifdef RTAI
  RT_TASK *task;
973
  char task_name[8];
974

975
  sprintf(task_name,"TXC%dS%d",proc->CC_id,proc->subframe);
976 977
  task = rt_task_init_schmod(nam2num(task_name), 0, 0, 0, SCHED_FIFO, 0xF);

978 979 980
  if (task == NULL) {
    LOG_E(PHY,"[SCHED][eNB] Problem starting eNB_proc_TX thread_index %d (%s)!!!!\n",proc->subframe,task_name);
    return 0;
981 982 983 984 985
  } else {
    LOG_I(PHY,"[SCHED][eNB] eNB TX thread CC %d SF %d started with id %p\n",
          proc->CC_id,
          proc->subframe,
          task);
986
  }
987

988
#else
989
#ifdef LOWLATENCY
990 991 992
  struct sched_attr attr;
  unsigned int flags = 0;

993 994 995 996
  attr.size = sizeof(attr);
  attr.sched_flags = 0;
  attr.sched_nice = 0;
  attr.sched_priority = 0;
997

998 999 1000
  // 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
1001 1002
  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
1003

1004 1005 1006 1007
  if (sched_setattr(0, &attr, flags) < 0 ) {
    perror("[SCHED] eNB tx thread: sched_setattr failed\n");
    return &eNB_thread_tx_status[proc->subframe];
  }
1008

1009
  LOG_I( HW, "[SCHED] eNB TX deadline thread %d(id %ld) started on CPU %d\n", proc->subframe, gettid(), sched_getcpu() );
1010
#else
1011
  LOG_I( HW, "[SCHED][eNB] TX thread %d started on CPU %d\n", proc->subframe, sched_getcpu() );