lte-enb.c 57.8 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
/*! \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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sched.h>
#include <linux/sched.h>
#include <signal.h>
#include <execinfo.h>
#include <getopt.h>
#include <sys/sysinfo.h>
#include "rt_wrapper.h"

#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all

#include "assertions.h"
#include "msc.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

63
#include "PHY/LTE_TRANSPORT/if4_tools.h"
64
#include "PHY/LTE_TRANSPORT/if5_tools.h"
65

66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
#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"

#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

Rohit Gupta's avatar
bugfix    
Rohit Gupta committed
104
105
#include "T.h"

106
107
108
109
110
111
112
113
114
115
//#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;

116
117
// Fix per CC openair rf/if device update
// extern openair0_device openair0;
118
119
120
121
122
123
124
125
126
127
128
129
130

#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 pthread_cond_t sync_cond;
extern pthread_mutex_t sync_mutex;
extern int sync_var;

131
//pthread_t                       main_eNB_thread;
132
133
134

time_stats_t softmodem_stats_mt; // main thread
time_stats_t softmodem_stats_hw; //  hw acquisition
knopp's avatar
knopp committed
135
time_stats_t softmodem_stats_rxtx_sf; // total tx time
136
time_stats_t softmodem_stats_rx_sf; // total rx time
137
138
139
140
141
142
143
144
145
146
147
148
149
int32_t **rxdata;
int32_t **txdata;

static int                      time_offset[4] = {0,0,0,0};

/* 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;
150
} sync_phy_proc;
151
152
153

void exit_fun(const char* s);

knopp's avatar
knopp committed
154
void init_eNB(eNB_func_t node_function[], eNB_timing_t node_timing[],int nb_inst,eth_params_t *,int);
155
void stop_eNB(int nb_inst);
156
157


knopp's avatar
knopp committed
158
static inline void thread_top_init(char *thread_name,
159
				   int affinity,
knopp's avatar
knopp committed
160
161
162
				   uint64_t runtime,
				   uint64_t deadline,
				   uint64_t period) {
knopp's avatar
knopp committed
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182

  MSC_START_USE();

#ifdef DEADLINE_SCHEDULER
  struct sched_attr attr;

  unsigned int flags = 0;

  attr.size = sizeof(attr);
  attr.sched_flags = 0;
  attr.sched_nice = 0;
  attr.sched_priority = 0;

  attr.sched_policy   = SCHED_DEADLINE;
  attr.sched_runtime  = runtime;
  attr.sched_deadline = deadline;
  attr.sched_period   = period; 

  if (sched_setattr(0, &attr, flags) < 0 ) {
    perror("[SCHED] eNB tx thread: sched_setattr failed\n");
Rohit Gupta's avatar
Rohit Gupta committed
183
    exit_fun("Error setting deadline scheduler");
knopp's avatar
knopp committed
184
185
  }

186
  LOG_I( HW, "[SCHED] eNB %s deadline thread started on CPU %d\n", thread_name,sched_getcpu() );
knopp's avatar
knopp committed
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202

#else //LOW_LATENCY
  int policy, s, j;
  struct sched_param sparam;
  char cpu_affinity[1024];
  cpu_set_t cpuset;

  /* Set affinity mask to include CPUs 1 to MAX_CPUS */
  /* CPU 0 is reserved for UHD threads */
  /* CPU 1 is reserved for all RX_TX threads */
  /* Enable CPU Affinity only if number of CPUs >2 */
  CPU_ZERO(&cpuset);

#ifdef CPU_AFFINITY
  if (get_nprocs() > 2)
  {
203
204
205
206
    if (affinity == 0)
      CPU_SET(0,&cpuset);
    else
      for (j = 1; j < get_nprocs(); j++)
knopp's avatar
knopp committed
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
        CPU_SET(j, &cpuset);
    s = pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
    if (s != 0)
    {
      perror( "pthread_setaffinity_np");
      exit_fun("Error setting processor affinity");
    }
  }
#endif //CPU_AFFINITY

  /* Check the actual affinity mask assigned to the thread */
  s = pthread_getaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
  if (s != 0) {
    perror( "pthread_getaffinity_np");
    exit_fun("Error getting processor affinity ");
  }
  memset(cpu_affinity,0,sizeof(cpu_affinity));
  for (j = 0; j < CPU_SETSIZE; j++)
    if (CPU_ISSET(j, &cpuset)) {  
      char temp[1024];
      sprintf (temp, " CPU_%d", j);
      strcat(cpu_affinity, temp);
    }

  memset(&sparam, 0, sizeof(sparam));
232
  sparam.sched_priority = sched_get_priority_max(SCHED_FIFO);
knopp's avatar
knopp committed
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
  policy = SCHED_FIFO ; 
  
  s = pthread_setschedparam(pthread_self(), policy, &sparam);
  if (s != 0) {
    perror("pthread_setschedparam : ");
    exit_fun("Error setting thread priority");
  }
  
  s = pthread_getschedparam(pthread_self(), &policy, &sparam);
  if (s != 0) {
    perror("pthread_getschedparam : ");
    exit_fun("Error getting thread priority");
  }

  LOG_I(HW, "[SCHED][eNB] %s started on CPU %d TID %ld, sched_policy = %s , priority = %d, CPU Affinity=%s \n",thread_name,sched_getcpu(),gettid(),
                   (policy == SCHED_FIFO)  ? "SCHED_FIFO" :
                   (policy == SCHED_RR)    ? "SCHED_RR" :
                   (policy == SCHED_OTHER) ? "SCHED_OTHER" :
                   "???",
                   sparam.sched_priority, cpu_affinity );

#endif //LOW_LATENCY

  mlockall(MCL_CURRENT | MCL_FUTURE);

}

knopp's avatar
knopp committed
260
static inline void wait_sync(char *thread_name) {
knopp's avatar
knopp committed
261
262
263
264
265
266
267
268
269
270
271
272
273

  printf( "waiting for sync (%s)\n",thread_name);
  pthread_mutex_lock( &sync_mutex );
  
  while (sync_var<0)
    pthread_cond_wait( &sync_cond, &sync_mutex );
  
  pthread_mutex_unlock(&sync_mutex);
  
  printf( "got sync (%s)\n", thread_name);

}

Sandeep Kumar's avatar
Sandeep Kumar committed
274
275
void do_OFDM_mod_rt(int subframe,PHY_VARS_eNB *phy_vars_eNB) {
     
276
277
  unsigned int aa,slot_offset, slot_offset_F;
  int dummy_tx_b[7680*4] __attribute__((aligned(32)));
knopp's avatar
knopp committed
278
  int i,j, tx_offset;
279
280
  int slot_sizeF = (phy_vars_eNB->frame_parms.ofdm_symbol_size)*
                   ((phy_vars_eNB->frame_parms.Ncp==1) ? 6 : 7);
knopp's avatar
knopp committed
281
282
  int len,len2;
  int16_t *txdata;
283

284
285
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_SFGEN , 1 );

286
287
  slot_offset_F = (subframe<<1)*slot_sizeF;

288
  slot_offset = subframe*phy_vars_eNB->frame_parms.samples_per_tti;
289

290
291
  if ((subframe_select(&phy_vars_eNB->frame_parms,subframe)==SF_DL)||
      ((subframe_select(&phy_vars_eNB->frame_parms,subframe)==SF_S))) {
292
293
    //    LOG_D(HW,"Frame %d: Generating slot %d\n",frame,next_slot);

294
295
296
    for (aa=0; aa<phy_vars_eNB->frame_parms.nb_antennas_tx; aa++) {
      if (phy_vars_eNB->frame_parms.Ncp == EXTENDED) {
        PHY_ofdm_mod(&phy_vars_eNB->common_vars.txdataF[0][aa][slot_offset_F],
297
                     dummy_tx_b,
298
                     phy_vars_eNB->frame_parms.ofdm_symbol_size,
299
                     6,
300
                     phy_vars_eNB->frame_parms.nb_prefix_samples,
301
                     CYCLIC_PREFIX);
302
303
304
        PHY_ofdm_mod(&phy_vars_eNB->common_vars.txdataF[0][aa][slot_offset_F+slot_sizeF],
                     dummy_tx_b+(phy_vars_eNB->frame_parms.samples_per_tti>>1),
                     phy_vars_eNB->frame_parms.ofdm_symbol_size,
305
                     6,
306
                     phy_vars_eNB->frame_parms.nb_prefix_samples,
307
308
                     CYCLIC_PREFIX);
      } else {
309
        normal_prefix_mod(&phy_vars_eNB->common_vars.txdataF[0][aa][slot_offset_F],
310
311
                          dummy_tx_b,
                          7,
312
                          &(phy_vars_eNB->frame_parms));
313
	// if S-subframe generate first slot only
Sandeep Kumar's avatar
Sandeep Kumar committed
314
	if (subframe_select(&phy_vars_eNB->frame_parms,subframe) == SF_DL) 
315
316
	  normal_prefix_mod(&phy_vars_eNB->common_vars.txdataF[0][aa][slot_offset_F+slot_sizeF],
			    dummy_tx_b+(phy_vars_eNB->frame_parms.samples_per_tti>>1),
317
			    7,
318
			    &(phy_vars_eNB->frame_parms));
319
320
321
      }

      // if S-subframe generate first slot only
322
323
      if (subframe_select(&phy_vars_eNB->frame_parms,subframe) == SF_S)
	len = phy_vars_eNB->frame_parms.samples_per_tti>>1;
324
      else
325
	len = phy_vars_eNB->frame_parms.samples_per_tti;
326
327
328
329
330
331
332
      /*
      for (i=0;i<len;i+=4) {
	dummy_tx_b[i] = 0x100;
	dummy_tx_b[i+1] = 0x01000000;
	dummy_tx_b[i+2] = 0xff00;
	dummy_tx_b[i+3] = 0xff000000;
	}*/
knopp's avatar
knopp committed
333
334
335
336
337
338
339
340
341
342
343
344
345
346
      
      if (slot_offset+time_offset[aa]<0) {
	txdata = (int16_t*)&phy_vars_eNB->common_vars.txdata[0][aa][(LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*phy_vars_eNB->frame_parms.samples_per_tti)+tx_offset];
        len2 = -(slot_offset+time_offset[aa]);
	len2 = (len2>len) ? len : len2;
	for (i=0; i<(len2<<1); i++) {
	  txdata[i] = ((int16_t*)dummy_tx_b)[i]<<openair0_cfg[0].iq_txshift;
	}
	if (len2<len) {
	  txdata = (int16_t*)&phy_vars_eNB->common_vars.txdata[0][aa][0];
	  for (j=0; i<(len<<1); i++,j++) {
	    txdata[j++] = ((int16_t*)dummy_tx_b)[i]<<openair0_cfg[0].iq_txshift;
	  }
	}
Sandeep Kumar's avatar
Sandeep Kumar committed
347
      }  
knopp's avatar
knopp committed
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
      else if ((slot_offset+time_offset[aa]+len)>(LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*phy_vars_eNB->frame_parms.samples_per_tti)) {
	tx_offset = (int)slot_offset+time_offset[aa];
	txdata = (int16_t*)&phy_vars_eNB->common_vars.txdata[0][aa][tx_offset];
	len2 = -tx_offset+LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*phy_vars_eNB->frame_parms.samples_per_tti;
	for (i=0; i<(len2<<1); i++) {
	  txdata[i] = ((int16_t*)dummy_tx_b)[i]<<openair0_cfg[0].iq_txshift;
	}
	txdata = (int16_t*)&phy_vars_eNB->common_vars.txdata[0][aa][0];
	for (j=0; i<(len<<1); i++,j++) {
	  txdata[j++] = ((int16_t*)dummy_tx_b)[i]<<openair0_cfg[0].iq_txshift;
	}
      }
      else {
	tx_offset = (int)slot_offset+time_offset[aa];
	txdata = (int16_t*)&phy_vars_eNB->common_vars.txdata[0][aa][tx_offset];
363

knopp's avatar
knopp committed
364
365
366
367
368
	for (i=0; i<(len<<1); i++) {
	  txdata[i] = ((int16_t*)dummy_tx_b)[i]<<openair0_cfg[0].iq_txshift;
	}
      }
      
369
     // if S-subframe switch to RX in second subframe
knopp's avatar
knopp committed
370
      /*
371
     if (subframe_select(&phy_vars_eNB->frame_parms,subframe) == SF_S) {
372
       for (i=0; i<len; i++) {
373
	 phy_vars_eNB->common_vars.txdata[0][aa][tx_offset++] = 0x00010001;
374
375
       }
     }
knopp's avatar
knopp committed
376
      */
377
     if ((((phy_vars_eNB->frame_parms.tdd_config==0) ||
Sandeep Kumar's avatar
Sandeep Kumar committed
378
379
380
381
	   (phy_vars_eNB->frame_parms.tdd_config==1) ||
	   (phy_vars_eNB->frame_parms.tdd_config==2) ||
	   (phy_vars_eNB->frame_parms.tdd_config==6)) && 
	   (subframe==0)) || (subframe==5)) {
382
383
384
       // turn on tx switch N_TA_offset before
       //LOG_D(HW,"subframe %d, time to switch to tx (N_TA_offset %d, slot_offset %d) \n",subframe,phy_vars_eNB->N_TA_offset,slot_offset);
       for (i=0; i<phy_vars_eNB->N_TA_offset; i++) {
Sandeep Kumar's avatar
Sandeep Kumar committed
385
386
387
         tx_offset = (int)slot_offset+time_offset[aa]+i-phy_vars_eNB->N_TA_offset/2;
         if (tx_offset<0)
           tx_offset += LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*phy_vars_eNB->frame_parms.samples_per_tti;
388
	 
Sandeep Kumar's avatar
Sandeep Kumar committed
389
390
         if (tx_offset>=(LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*phy_vars_eNB->frame_parms.samples_per_tti))
           tx_offset -= LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*phy_vars_eNB->frame_parms.samples_per_tti;
391
	 
Sandeep Kumar's avatar
Sandeep Kumar committed
392
         phy_vars_eNB->common_vars.txdata[0][aa][tx_offset] = 0x00000000;
393
394
395
396
       }
     }
    }
  }
397
398
399
400
401
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_ENB_SFGEN , 0 );
}

void tx_fh_if5(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc) {
  uint8_t seqno;
Raymond Knopp's avatar
Raymond Knopp committed
402
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST, proc->timestamp_tx&0xffffffff );
403
404
405
406
407
408
409
  send_IF5(eNB, proc->timestamp_tx, proc->subframe_tx, &seqno, IF5_RRH_GW_DL);
}

void tx_fh_if4p5(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc) {    
  send_IF4p5(eNB,proc->frame_tx, proc->subframe_tx, IF4p5_PDLFFT, 0);
}

Raymond Knopp's avatar
Raymond Knopp committed
410
411
412
413
void proc_tx_high0(PHY_VARS_eNB *eNB,
		   eNB_rxtx_proc_t *proc,
		   relaying_type_t r_type,
		   PHY_VARS_RN *rn) {
414

knopp's avatar
knopp committed
415
416
417
  int offset = proc == &eNB->proc.proc_rxtx[0] ? 0 : 1;

  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX0_ENB+offset, proc->frame_tx );
418
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_TX0_ENB+offset, proc->subframe_tx );
knopp's avatar
knopp committed
419

420
  phy_procedures_eNB_TX(eNB,proc,r_type,rn,1);
421
422
423
424
425
426
427
428
429
430
431
432
433
434

  /* we're done, let the next one proceed */
  if (pthread_mutex_lock(&sync_phy_proc.mutex_phy_proc_tx) != 0) {
    LOG_E(PHY, "[SCHED][eNB] error locking PHY proc mutex for eNB TX proc\n");
    exit_fun("nothing to add");
  }	
  sync_phy_proc.phy_proc_CC_id++;
  sync_phy_proc.phy_proc_CC_id %= MAX_NUM_CCs;
  pthread_cond_broadcast(&sync_phy_proc.cond_phy_proc_tx);
  if (pthread_mutex_unlock(&sync_phy_proc.mutex_phy_proc_tx) != 0) {
    LOG_E(PHY, "[SCHED][eNB] error unlocking PHY proc mutex for eNB TX proc\n");
    exit_fun("nothing to add");
  }

Raymond Knopp's avatar
Raymond Knopp committed
435
436
437
438
439
440
}

void proc_tx_high(PHY_VARS_eNB *eNB,
		  eNB_rxtx_proc_t *proc,
		  relaying_type_t r_type,
		  PHY_VARS_RN *rn) {
441

knopp's avatar
knopp committed
442

Raymond Knopp's avatar
Raymond Knopp committed
443
444
445
446
447
448
449
450
451
452
453
454
  // do PHY high
  proc_tx_high0(eNB,proc,r_type,rn);

  // if TX fronthaul go ahead 
  if (eNB->tx_fh) eNB->tx_fh(eNB,proc);

}

void proc_tx_full(PHY_VARS_eNB *eNB,
		  eNB_rxtx_proc_t *proc,
		  relaying_type_t r_type,
		  PHY_VARS_RN *rn) {
455

Raymond Knopp's avatar
Raymond Knopp committed
456
457
458
459
460
461

  // do PHY high
  proc_tx_high0(eNB,proc,r_type,rn);
  // do OFDM modulation
  do_OFDM_mod_rt(proc->subframe_tx,eNB);
  // if TX fronthaul go ahead 
462
463
464
465
466
467
  if (eNB->tx_fh) eNB->tx_fh(eNB,proc);



}

Raymond Knopp's avatar
Raymond Knopp committed
468
469
470
471
void proc_tx_rru_if4p5(PHY_VARS_eNB *eNB,
		       eNB_rxtx_proc_t *proc,
		       relaying_type_t r_type,
		       PHY_VARS_RN *rn) {
472
473
474
475
476

  uint32_t symbol_number=0;
  uint32_t symbol_mask, symbol_mask_full;
  uint16_t packet_type;

knopp's avatar
knopp committed
477
478
479
  int offset = proc == &eNB->proc.proc_rxtx[0] ? 0 : 1;

  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX0_ENB+offset, proc->frame_tx );
480
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_TX0_ENB+offset, proc->subframe_tx );
knopp's avatar
knopp committed
481

482
483
484
485
486
  /// **** recv_IF4 of txdataF from RCC **** ///             
  symbol_number = 0;
  symbol_mask = 0;
  symbol_mask_full = (1<<eNB->frame_parms.symbols_per_tti)-1;
  
knopp's avatar
knopp committed
487

488
489
490
491
492
493
494
495
496
  do { 
    recv_IF4p5(eNB, &proc->frame_tx, &proc->subframe_tx, &packet_type, &symbol_number);
    symbol_mask = symbol_mask | (1<<symbol_number);
  } while (symbol_mask != symbol_mask_full); 

  do_OFDM_mod_rt(proc->subframe_tx, eNB);
}

void proc_tx_rru_if5(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc) {
knopp's avatar
knopp committed
497
498
499
  int offset = proc == &eNB->proc.proc_rxtx[0] ? 0 : 1;

  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX0_ENB+offset, proc->frame_tx );
500
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_TX0_ENB+offset, proc->subframe_tx );
501
502
  /// **** recv_IF5 of txdata from BBU **** ///       
  recv_IF5(eNB, &proc->timestamp_tx, proc->subframe_tx, IF5_RRH_GW_DL);
503
504
}

505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
int wait_CCs(eNB_rxtx_proc_t *proc) {

  struct timespec wait;

  wait.tv_sec=0;
  wait.tv_nsec=5000000L;

  if (pthread_mutex_timedlock(&sync_phy_proc.mutex_phy_proc_tx,&wait) != 0) {
    LOG_E(PHY, "[SCHED][eNB] error locking PHY proc mutex for eNB TX\n");
    exit_fun("nothing to add");
    return(-1);
  }
  
  // wait for our turn or oai_exit
  while (sync_phy_proc.phy_proc_CC_id != proc->CC_id && !oai_exit) {
    pthread_cond_wait(&sync_phy_proc.cond_phy_proc_tx,
		      &sync_phy_proc.mutex_phy_proc_tx);
  }
  
  if (pthread_mutex_unlock(&sync_phy_proc.mutex_phy_proc_tx) != 0) {
    LOG_E(PHY, "[SCHED][eNB] error unlocking PHY proc mutex for eNB TX\n");
    exit_fun("nothing to add");
    return(-1);
  }
  return(0);
}
Sandeep Kumar's avatar
Sandeep Kumar committed
531

knopp's avatar
knopp committed
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
static inline int rxtx(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc, char *thread_name) {

  start_meas(&softmodem_stats_rxtx_sf);
  // ****************************************
  // Common RX procedures subframe n
  phy_procedures_eNB_common_RX(eNB);
  
  // UE-specific RX processing for subframe n
  if (eNB->proc_uespec_rx) eNB->proc_uespec_rx(eNB, proc, no_relay );
  
  // *****************************************
  // TX processing for subframe n+4
  // 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 (eNB->proc_tx)	eNB->proc_tx(eNB, proc, no_relay, NULL );
  
  if (release_thread(&proc->mutex_rxtx,&proc->instance_cnt_rxtx,thread_name)<0) return(-1);

  stop_meas( &softmodem_stats_rxtx_sf );
  
  return(0);
}

560
/*!
knopp's avatar
knopp committed
561
 * \brief The RX UE-specific and TX thread of eNB.
562
563
564
 * \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.
 */
Sandeep Kumar's avatar
Sandeep Kumar committed
565
566
static void* eNB_thread_rxtx( void* param ) {

knopp's avatar
knopp committed
567
  static int eNB_thread_rxtx_status;
568

knopp's avatar
knopp committed
569
  eNB_rxtx_proc_t *proc = (eNB_rxtx_proc_t*)param;
570
571
  PHY_VARS_eNB *eNB = PHY_vars_eNB_g[0][proc->CC_id];

knopp's avatar
knopp committed
572
573
  char thread_name[100];

574

575
  // set default return value
knopp's avatar
knopp committed
576
  eNB_thread_rxtx_status = 0;
577

knopp's avatar
knopp committed
578
  sprintf(thread_name,"RXn_TXnp4_%d\n",&eNB->proc.proc_rxtx[0] == proc ? 0 : 1);
579
  thread_top_init(thread_name,1,850000L,1000000L,2000000L);
580
581

  while (!oai_exit) {
knopp's avatar
knopp committed
582
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RXTX0+(proc->subframe_rx&1), 0 );
583

knopp's avatar
knopp committed
584
    if (wait_on_condition(&proc->mutex_rxtx,&proc->cond_rxtx,&proc->instance_cnt_rxtx,thread_name)<0) break;
585

knopp's avatar
knopp committed
586
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RXTX0+(proc->subframe_rx&1), 1 );
587

knopp's avatar
knopp committed
588
    
589
  
590
591
    if (oai_exit) break;

knopp's avatar
knopp committed
592
    if (rxtx(eNB,proc,thread_name) < 0) break;
593

knopp's avatar
knopp committed
594
  } // while !oai_exit
595

knopp's avatar
knopp committed
596
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_RXTX0+(proc->subframe_rx&1), 0 );
597

Raymond Knopp's avatar
Raymond Knopp committed
598
  printf( "Exiting eNB thread RXn_TXnp4\n");
599

knopp's avatar
knopp committed
600
601
  eNB_thread_rxtx_status = 0;
  return &eNB_thread_rxtx_status;
602
603
}

604
#if defined(ENABLE_ITTI) && defined(ENABLE_USE_MME)
Sandeep Kumar's avatar
Sandeep Kumar committed
605
606
607
/* Wait for eNB application initialization to be complete (eNB registration to MME) */
static void wait_system_ready (char *message, volatile int *start_flag) {
  
608
  static char *indicator[] = {".    ", "..   ", "...  ", ".... ", ".....",
Sandeep Kumar's avatar
Sandeep Kumar committed
609
			      " ....", "  ...", "   ..", "    .", "     "};
610
611
612
613
614
615
616
  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);
617
  }
618
619
  
  LOG_D(EMU,"\n");
620
621
}
#endif
622

knopp's avatar
knopp committed
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767

// asynchronous UL with IF4p5 (RCC,RAU,eNodeB_BBU)
void fh_if5_asynch_UL(PHY_VARS_eNB *eNB,int *frame,int *subframe) {

  eNB_proc_t *proc       = &eNB->proc;
  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;

  recv_IF5(eNB, &proc->timestamp_rx, *subframe, IF5_RRH_GW_UL); 

  proc->subframe_rx = (proc->timestamp_rx/fp->samples_per_tti)%10;
  proc->frame_rx    = (proc->timestamp_rx/(10*fp->samples_per_tti))&1023;

  if (proc->first_rx != 0) {
    proc->first_rx = 0;
    *subframe = proc->subframe_rx;
    *frame    = proc->frame_rx; 
  }
  else {
    if (proc->subframe_rx != *subframe) {
      LOG_E(PHY,"subframe_rx %d is not what we expect %d\n",proc->subframe_rx,*subframe);
      exit_fun("Exiting");
    }
    if (proc->frame_rx != *frame) {
      LOG_E(PHY,"subframe_rx %d is not what we expect %d\n",proc->frame_rx,*frame);  
      exit_fun("Exiting");
    }
  }
} // eNodeB_3GPP_BBU 

// asynchronous UL with IF4p5 (RCC,RAU,eNodeB_BBU)
void fh_if4p5_asynch_UL(PHY_VARS_eNB *eNB,int *frame,int *subframe) {

  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
  eNB_proc_t *proc       = &eNB->proc;

  uint16_t packet_type;
  uint32_t symbol_number,symbol_mask,symbol_mask_full,prach_rx;


  symbol_number = 0;
  symbol_mask = 0;
  symbol_mask_full = (1<<fp->symbols_per_tti)-1;
  prach_rx = 0;

  do {   // Blocking, we need a timeout on this !!!!!!!!!!!!!!!!!!!!!!!
    recv_IF4p5(eNB, &proc->frame_rx, &proc->subframe_rx, &packet_type, &symbol_number);
    if (proc->first_rx != 0) {
      *frame = proc->frame_rx;
      *subframe = proc->subframe_rx;
      proc->first_rx = 0;
    }
    else {
      if (proc->frame_rx != *frame) {
	LOG_E(PHY,"frame_rx %d is not what we expect %d\n",proc->frame_rx,*frame);
	exit_fun("Exiting");
      }
      if (proc->subframe_rx != *subframe) {
	LOG_E(PHY,"subframe_rx %d is not what we expect %d\n",proc->subframe_rx,*subframe);
	exit_fun("Exiting");
      }
    }
    if (packet_type == IF4p5_PULFFT) {
      symbol_mask = symbol_mask | (1<<symbol_number);
      prach_rx = (is_prach_subframe(fp, proc->frame_rx, proc->subframe_rx)>0) ? 1 : 0;                            
    } else if (packet_type == IF4p5_PRACH) {
      prach_rx = 0;
    }
  } while( (symbol_mask != symbol_mask_full) || (prach_rx == 1));    
  

} 


void fh_if5_asynch_DL(PHY_VARS_eNB *eNB,int *frame,int *subframe) {

  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
  eNB_proc_t *proc       = &eNB->proc;
  int subframe_tx,frame_tx;
  openair0_timestamp timestamp_tx;

  recv_IF5(eNB, &timestamp_tx, *subframe, IF5_RRH_GW_DL); 
      //      printf("Received subframe %d (TS %llu) from RCC\n",subframe_tx,timestamp_tx);

  subframe_tx = (timestamp_tx/fp->samples_per_tti)%10;
  frame_tx    = (timestamp_tx/(fp->samples_per_tti*10))&1023;

  if (proc->first_tx != 0) {
    *subframe = subframe_tx;
    *frame    = frame_tx;
    proc->first_tx = 0;
  }
  else {
    if (subframe_tx != *subframe) {
      LOG_E(PHY,"subframe_tx %d is not what we expect %d\n",subframe_tx,*subframe);
      exit_fun("Exiting");
    }
    if (frame_tx != *frame) { 
      LOG_E(PHY,"frame_tx %d is not what we expect %d\n",frame_tx,*frame);
      exit_fun("Exiting");
    }
  }
}

void fh_if4p5_asynch_DL(PHY_VARS_eNB *eNB,int *frame,int *subframe) {

  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
  eNB_proc_t *proc       = &eNB->proc;

  uint16_t packet_type;
  uint32_t symbol_number,symbol_mask,symbol_mask_full;
  int subframe_tx,frame_tx;

  symbol_number = 0;
  symbol_mask = 0;
  symbol_mask_full = (1<<fp->symbols_per_tti)-1;

  do {   // Blocking, we need a timeout on this !!!!!!!!!!!!!!!!!!!!!!!
    recv_IF4p5(eNB, &frame_tx, &subframe_tx, &packet_type, &symbol_number);
    if (proc->first_tx != 0) {
      *frame    = frame_tx;
      *subframe = subframe_tx;
      proc->first_tx = 0;
    }
    else {
      if (frame_tx != *frame) {
	LOG_E(PHY,"frame_tx %d is not what we expect %d\n",frame_tx,*frame);
	exit_fun("Exiting");
      }
      if (subframe_tx != *subframe) {
	LOG_E(PHY,"subframe_tx %d is not what we expect %d\n",subframe_tx,*subframe);
	exit_fun("Exiting");
      }
    }
    if (packet_type == IF4p5_PDLFFT) {
      symbol_mask = symbol_mask | (1<<symbol_number);
    }
    else {
      LOG_E(PHY,"Illegal IF4p5 packet type (should only be IF4p5_PDLFFT%d\n",packet_type);
      exit_fun("Exiting");
    }
  } while (symbol_mask != symbol_mask_full);    
  
  do_OFDM_mod_rt(subframe_tx, eNB);
} 

768
/*!
769
 * \brief The Asynchronous RX/TX FH thread of RAU/RCC/eNB/RRU.
770
771
772
773
 * This handles the RX FH for an asynchronous RRU/UE
 * \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.
 */
774
static void* eNB_thread_asynch_rxtx( void* param ) {
775

776
  static int eNB_thread_asynch_rxtx_status;
Raymond Knopp's avatar
Raymond Knopp committed
777

778
779
  eNB_proc_t *proc = (eNB_proc_t*)param;
  PHY_VARS_eNB *eNB = PHY_vars_eNB_g[0][proc->CC_id];
knopp's avatar
knopp committed
780
781


knopp's avatar
knopp committed
782
  int subframe=0, frame=0; 
783

784
  thread_top_init("thread_asynch",1,870000L,1000000L,1000000L);
785
786
787

  // wait for top-level synchronization and do one acquisition to get timestamp for setting frame/subframe

knopp's avatar
knopp committed
788
  wait_sync("thread_asynch");
789

790
791
  // wait for top-level synchronization and do one acquisition to get timestamp for setting frame/subframe
  printf( "waiting for devices (eNB_thread_asynch_rx)\n");
792

knopp's avatar
knopp committed
793
  wait_on_condition(&proc->mutex_asynch_rxtx,&proc->cond_asynch_rxtx,&proc->instance_cnt_asynch_rxtx,"thread_asynch");
794

795
796
797
  printf( "devices ok (eNB_thread_asynch_rx)\n");


knopp's avatar
knopp committed
798
799
800
  while (!oai_exit) { 
   
    if (oai_exit) break;   
801

knopp's avatar
knopp committed
802
803
804
805
806
807
808
    if (subframe==9) { 
      subframe=0;
      frame++;
      frame&=1023;
    } else {
      subframe++;
    }      
809

knopp's avatar
knopp committed
810
811
812
    if (eNB->fh_asynch) eNB->fh_asynch(eNB,&frame,&subframe);
    else AssertFatal(1==0, "Unknown eNB->node_function %d",eNB->node_function);
    
813
  }
814

815
816
  eNB_thread_asynch_rxtx_status=0;
  return(&eNB_thread_asynch_rxtx_status);
817
}
Sandeep Kumar's avatar
Sandeep Kumar committed
818

819

knopp's avatar
knopp committed
820
821
822
823
824
825



void rx_rf(PHY_VARS_eNB *eNB,int *frame,int *subframe) {

  eNB_proc_t *proc = &eNB->proc;
826
827
828
829
  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
  void *rxp[fp->nb_antennas_rx],*txp[fp->nb_antennas_tx]; 
  unsigned int rxs,txs;
  int i;
830
  int tx_sfoffset = 3;//(eNB->single_thread_flag == 1) ? 3 : 3;
831
832
  if (proc->first_rx==0) {
    
833
    // Transmit TX buffer based on timestamp from RX
834
    //    printf("trx_write -> USRP TS %llu (sf %d)\n", (proc->timestamp_rx+(3*fp->samples_per_tti)),(proc->subframe_rx+2)%10);
835
    VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST, (proc->timestamp_rx+(tx_sfoffset*fp->samples_per_tti)-openair0_cfg[0].tx_sample_advance)&0xffffffff );
836
837
838
839
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE, 1 );
    // prepare tx buffer pointers
	
    for (i=0; i<fp->nb_antennas_tx; i++)
840
      txp[i] = (void*)&eNB->common_vars.txdata[0][i][((proc->subframe_rx+tx_sfoffset)%10)*fp->samples_per_tti];
841
842
    
    txs = eNB->rfdevice.trx_write_func(&eNB->rfdevice,
843
				       proc->timestamp_rx+(tx_sfoffset*fp->samples_per_tti)-openair0_cfg[0].tx_sample_advance,
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
				       txp,
				       fp->samples_per_tti,
				       fp->nb_antennas_tx,
				       1);
    
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE, 0 );
    
    
    
    if (txs !=  fp->samples_per_tti) {
      LOG_E(PHY,"TX : Timeout (sent %d/%d)\n",txs, fp->samples_per_tti);
      exit_fun( "problem transmitting samples" );
    }	
  }
  
  for (i=0; i<fp->nb_antennas_rx; i++)
    rxp[i] = (void*)&eNB->common_vars.rxdata[0][i][*subframe*fp->samples_per_tti];
  
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 1 );
863

864
865
866
867
868
  rxs = eNB->rfdevice.trx_read_func(&eNB->rfdevice,
				    &(proc->timestamp_rx),
				    rxp,
				    fp->samples_per_tti,
				    fp->nb_antennas_rx);
Raymond Knopp's avatar
Raymond Knopp committed
869
870

  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 0 );
871
872
873
  
  proc->frame_rx    = (proc->timestamp_rx / (fp->samples_per_tti*10))&1023;
  proc->subframe_rx = (proc->timestamp_rx / fp->samples_per_tti)%10;
874
  //  printf("trx_read <- USRP TS %llu (sf %d, first_rx %d)\n", proc->timestamp_rx,proc->subframe_rx,proc->first_rx);  
875
876
877
  
  if (proc->first_rx == 0) {
    if (proc->subframe_rx != *subframe){
knopp's avatar
knopp committed
878
      LOG_E(PHY,"Received Timestamp doesn't correspond to the time we think it is (proc->subframe_rx %d, subframe %d)\n",proc->subframe_rx,*subframe);
879
880
881
882
      exit_fun("Exiting");
    }
    
    if (proc->frame_rx != *frame) {
knopp's avatar
knopp committed
883
      LOG_E(PHY,"Received Timestamp doesn't correspond to the time we think it is (proc->frame_rx %d frame %d)\n",proc->frame_rx,*frame);
884
885
886
887
888
889
890
891
892
893
894
895
      exit_fun("Exiting");
    }
  } else {
    proc->first_rx = 0;
    *frame = proc->frame_rx;
    *subframe = proc->subframe_rx;        
  }
  
  //printf("timestamp_rx %lu, frame %d(%d), subframe %d(%d)\n",proc->timestamp_rx,proc->frame_rx,frame,proc->subframe_rx,subframe);
  
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
  
Raymond Knopp's avatar
Raymond Knopp committed
896
897
898
899
900
  if (rxs != fp->samples_per_tti)
    exit_fun( "problem receiving samples" );
  

  
901
902
}

knopp's avatar
knopp committed
903
void rx_fh_if5(PHY_VARS_eNB *eNB,int *frame, int *subframe) {
904
905

  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
knopp's avatar
knopp committed
906
  eNB_proc_t *proc = &eNB->proc;
907
908
909
910
911
912
913

  recv_IF5(eNB, &proc->timestamp_rx, *subframe, IF5_RRH_GW_UL); 

  proc->frame_rx    = (proc->timestamp_rx / (fp->samples_per_tti*10))&1023;
  proc->subframe_rx = (proc->timestamp_rx / fp->samples_per_tti)%10;
  
  if (proc->first_rx == 0) {
Raymond Knopp's avatar
Raymond Knopp committed
914
    if (proc->subframe_rx != *subframe){
915
916
917
918
      LOG_E(PHY,"Received Timestamp doesn't correspond to the time we think it is (proc->subframe_rx %d, subframe %d)\n",proc->subframe_rx,subframe);
      exit_fun("Exiting");
    }
    
Raymond Knopp's avatar
Raymond Knopp committed
919
    if (proc->frame_rx != *frame) {
920
921
922
923
924
      LOG_E(PHY,"Received Timestamp doesn't correspond to the time we think it is (proc->frame_rx %d frame %d)\n",proc->frame_rx,frame);
      exit_fun("Exiting");
    }
  } else {
    proc->first_rx = 0;
Raymond Knopp's avatar
Raymond Knopp committed
925
926
    *frame = proc->frame_rx;
    *subframe = proc->subframe_rx;        
927
928
929
930
931
932
  }      
  
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );

}

knopp's avatar
knopp committed
933

934
void rx_fh_if4p5(PHY_VARS_eNB *eNB,int *frame,int *subframe) {
935
936

  LTE_DL_FRAME_PARMS *fp = &eNB->frame_parms;
937
  eNB_proc_t *proc = &eNB->proc;
938
939
940
941
942
943
944
945
946
947

  int prach_rx;

  uint16_t packet_type;
  uint32_t symbol_number=0;
  uint32_t symbol_mask, symbol_mask_full;

  symbol_mask = 0;
  symbol_mask_full = (1<<fp->symbols_per_tti)-1;
  prach_rx = 0;
Raymond Knopp's avatar
Raymond Knopp committed
948

949
950
  do {   // Blocking, we need a timeout on this !!!!!!!!!!!!!!!!!!!!!!!
    recv_IF4p5(eNB, &proc->frame_rx, &proc->subframe_rx, &packet_type, &symbol_number);
951

952
953
954
955
956
957
    if (packet_type == IF4p5_PULFFT) {
      symbol_mask = symbol_mask | (1<<symbol_number);
      prach_rx = (is_prach_subframe(fp, proc->frame_rx, proc->subframe_rx)>0) ? 1 : 0;                            
    } else if (packet_type == IF4p5_PRACH) {
      prach_rx = 0;
    }
Raymond Knopp's avatar
Raymond Knopp committed
958

959
960
961
962
  } while( (symbol_mask != symbol_mask_full) || (prach_rx == 1));    
  
  if (proc->first_rx == 0) {
    if (proc->subframe_rx != *subframe){
Raymond Knopp's avatar
Raymond Knopp committed
963
      LOG_E(PHY,"Received Timestamp doesn't correspond to the time we think it is (proc->subframe_rx %d, subframe %d)\n",proc->subframe_rx,*subframe);
964
965
966
      exit_fun("Exiting");
    }
    if (proc->frame_rx != *frame) {
Raymond Knopp's avatar
Raymond Knopp committed
967
      LOG_E(PHY,"Received Timestamp doesn't correspond to the time we think it is (proc->frame_rx %d frame %d)\n",proc->frame_rx,*frame);
968
969
970
971
972
973
974
975
976
977
978
979
      exit_fun("Exiting");
    }
  } else {
    proc->first_rx = 0;
    *frame = proc->frame_rx;
    *subframe = proc->subframe_rx;        
  }
  
  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
  
}

knopp's avatar
knopp committed
980
981
void rx_fh_slave(PHY_VARS_eNB *eNB,int *frame,int *subframe) {
  // This case is for synchronization to another thread
982
  // it just waits for an external event.  The actual rx_fh is handle by the asynchronous RX thread
knopp's avatar
knopp committed
983
984
  eNB_proc_t *proc=&eNB->proc;

knopp's avatar
knopp committed
985
986
987
988
989
  if (wait_on_condition(&proc->mutex_FH,&proc->cond_FH,&proc->instance_cnt_FH,"rx_fh_slave") < 0)
    return;

  release_thread(&proc->mutex_FH,&proc->instance_cnt_FH,"rx_fh_slave");

knopp's avatar
knopp committed
990
991
992
993
  
}


994
995
996
997
998
999
1000
int wakeup_rxtx(eNB_proc_t *proc,eNB_rxtx_proc_t *proc_rxtx,LTE_DL_FRAME_PARMS *fp) {

  int i;
  struct timespec wait;
  
  wait.tv_sec=0;
  wait.tv_nsec=5000000L;
For faster browsing, not all history is shown. View entire blame