openair0_lib.c 32.1 KB
Newer Older
1
/*******************************************************************************
2
    OpenAirInterface
3 4 5 6 7 8 9 10 11 12 13 14 15 16
    Copyright(c) 1999 - 2014 Eurecom

    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.


    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.

    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 20 21 22 23
    see <http://www.gnu.org/licenses/>.

   Contact Information
   OpenAirInterface Admin: openair_admin@eurecom.fr
   OpenAirInterface Tech : openair_tech@eurecom.fr
24
   OpenAirInterface Dev  : openair4g-devel@lists.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 31 32 33 34 35 36 37 38

/** openair0_lib : API to interface with ExpressMIMO-1&2 kernel driver
*
*  Authors: Matthias Ihmig <matthias.ihmig@mytum.de>, 2013
*           Raymond Knopp <raymond.knopp@eurecom.fr>
*
*  Changelog:
*  28.01.2013: Initial version
*/

39
#define _GNU_SOURCE
40
#include <stdio.h>
41
#include <stdlib.h>
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59
#include <errno.h>
#include <fcntl.h>
#include <getopt.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 <sys/ioctl.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <syscall.h>
60 61 62

#include "openair0_lib.h"
#include "openair_device.h"
63
#include "common_lib.h"
64 65 66

#include <pthread.h>

Raymond Knopp's avatar
Raymond Knopp committed
67

68
#define max(a,b) ((a)>(b) ? (a) : (b))
Raymond Knopp's avatar
Raymond Knopp committed
69

70
//#define DEBUG_EXMIMO
Raymond Knopp's avatar
Raymond Knopp committed
71

72
exmimo_pci_interface_bot_virtual_t openair0_exmimo_pci[MAX_CARDS]; // contains userspace pointers for each card
73 74 75 76 77 78 79 80 81

char *bigshm_top[MAX_CARDS] = INIT_ZEROS;

int openair0_fd;
int openair0_num_antennas[MAX_CARDS];
int openair0_num_detected_cards = 0;

unsigned int PAGE_SHIFT;

82
static uint32_t                      rf_local[4] =       {8255000,8255000,8255000,8255000}; // UE zepto
83 84
//{8254617, 8254617, 8254617, 8254617}; //eNB khalifa
//{8255067,8254810,8257340,8257340}; // eNB PETRONAS
85 86 87 88

static uint32_t                      rf_vcocal[4] =      {910,910,910,910};
static uint32_t                      rf_vcocal_850[4] =  {2015, 2015, 2015, 2015};
static uint32_t                      rf_rxdc[4] =        {32896,32896,32896,32896};
89

90 91 92 93 94 95 96


extern volatile int                    oai_exit;


void kill_watchdog(openair0_device *);
void create_watchdog(openair0_device *);
Raymond Knopp's avatar
Raymond Knopp committed
97
void rt_sleep(struct timespec *,long );
98

99 100 101
unsigned int log2_int( unsigned int x )
{
  unsigned int ans = 0 ;
102

103
  while( x>>=1 ) ans++;
104

105 106 107 108 109
  return ans ;
}

int openair0_open(void)
{
110 111
  exmimo_pci_interface_bot_virtual_t exmimo_pci_kvirt[MAX_CARDS];
  void *bigshm_top_kvirtptr[MAX_CARDS];
112

113 114
  int card;
  int ant;
115

116
  PAGE_SHIFT = log2_int( sysconf( _SC_PAGESIZE ) );
117

118

119 120 121
  if ((openair0_fd = open("/dev/openair0", O_RDWR,0)) <0) {
    return -1;
  }
122

123
  ioctl(openair0_fd, openair_GET_NUM_DETECTED_CARDS, &openair0_num_detected_cards);
124

125 126


127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152
  if ( openair0_num_detected_cards == 0 ) {
    fprintf(stderr, "No cards detected!\n");
    return -4;
  }

  ioctl(openair0_fd, openair_GET_BIGSHMTOPS_KVIRT, &bigshm_top_kvirtptr[0]);
  ioctl(openair0_fd, openair_GET_PCI_INTERFACE_BOTS_KVIRT, &exmimo_pci_kvirt[0]);

  //printf("bigshm_top_kvirtptr (MAX_CARDS %d): %p  %p  %p  %p\n", MAX_CARDS,bigshm_top_kvirtptr[0], bigshm_top_kvirtptr[1], bigshm_top_kvirtptr[2], bigshm_top_kvirtptr[3]);



  for( card=0; card < openair0_num_detected_cards; card++) {
    bigshm_top[card] = (char *)mmap( NULL,
                                     BIGSHM_SIZE_PAGES<<PAGE_SHIFT,
                                     PROT_READ|PROT_WRITE,
                                     MAP_SHARED, //|MAP_FIXED,//MAP_SHARED,
                                     openair0_fd,
                                     ( openair_mmap_BIGSHM | openair_mmap_Card(card) )<<PAGE_SHIFT);

    if (bigshm_top[card] == MAP_FAILED) {
      openair0_close();
      return -2;
    }

    // calculate userspace addresses
153
#if __x86_64
154 155 156 157
    openair0_exmimo_pci[card].firmware_block_ptr = (bigshm_top[card] +  (int64_t)exmimo_pci_kvirt[0].firmware_block_ptr - (int64_t)bigshm_top_kvirtptr[0]);
    openair0_exmimo_pci[card].printk_buffer_ptr  = (bigshm_top[card] +  (int64_t)exmimo_pci_kvirt[0].printk_buffer_ptr  - (int64_t)bigshm_top_kvirtptr[0]);
    openair0_exmimo_pci[card].exmimo_config_ptr  = (exmimo_config_t*) (bigshm_top[card] +  (int64_t)exmimo_pci_kvirt[0].exmimo_config_ptr  - (int64_t)bigshm_top_kvirtptr[0]);
    openair0_exmimo_pci[card].exmimo_id_ptr      = (exmimo_id_t*)     (bigshm_top[card] +  (int64_t)exmimo_pci_kvirt[0].exmimo_id_ptr      - (int64_t)bigshm_top_kvirtptr[0]);
158
#else
159 160 161 162
    openair0_exmimo_pci[card].firmware_block_ptr = (bigshm_top[card] +  (int32_t)exmimo_pci_kvirt[0].firmware_block_ptr - (int32_t)bigshm_top_kvirtptr[0]);
    openair0_exmimo_pci[card].printk_buffer_ptr  = (bigshm_top[card] +  (int32_t)exmimo_pci_kvirt[0].printk_buffer_ptr  - (int32_t)bigshm_top_kvirtptr[0]);
    openair0_exmimo_pci[card].exmimo_config_ptr  = (exmimo_config_t*) (bigshm_top[card] +  (int32_t)exmimo_pci_kvirt[0].exmimo_config_ptr  - (int32_t)bigshm_top_kvirtptr[0]);
    openair0_exmimo_pci[card].exmimo_id_ptr      = (exmimo_id_t*)     (bigshm_top[card] +  (int32_t)exmimo_pci_kvirt[0].exmimo_id_ptr      - (int32_t)bigshm_top_kvirtptr[0]);
163 164
#endif

165 166 167 168 169 170 171 172 173 174 175 176 177 178
    /*
          printf("openair0_exmimo_pci.firmware_block_ptr (%p) =  bigshm_top(%p) + exmimo_pci_kvirt.firmware_block_ptr(%p) - bigshm_top_kvirtptr(%p)\n",
              openair0_exmimo_pci[card].firmware_block_ptr, bigshm_top, exmimo_pci_kvirt[card].firmware_block_ptr, bigshm_top_kvirtptr[card]);
          printf("card%d, openair0_exmimo_pci.exmimo_id_ptr      (%p) =  bigshm_top(%p) + exmimo_pci_kvirt.exmimo_id_ptr     (%p) - bigshm_top_kvirtptr(%p)\n",
              card, openair0_exmimo_pci[card].exmimo_id_ptr, bigshm_top[card], exmimo_pci_kvirt[card].exmimo_id_ptr, bigshm_top_kvirtptr[card]);
    */

    /*
    if (openair0_exmimo_pci[card].exmimo_id_ptr->board_swrev != BOARD_SWREV_CNTL2)
      {
        error("Software revision %d and firmware revision %d do not match, Please update either Software or Firmware",BOARD_SWREV_CNTL2,openair0_exmimo_pci[card].exmimo_id_ptr->board_swrev);
        return -5;
      }
    */
179

180 181
    if ( openair0_exmimo_pci[card].exmimo_id_ptr->board_exmimoversion == 1)
      openair0_num_antennas[card] = 2;
182

183 184
    if ( openair0_exmimo_pci[card].exmimo_id_ptr->board_exmimoversion == 2)
      openair0_num_antennas[card] = 4;
185

186

187
    for (ant=0; ant<openair0_num_antennas[card]; ant++) {
188
#if __x86_64__
189 190
      openair0_exmimo_pci[card].rxcnt_ptr[ant] = (unsigned int *) (bigshm_top[card] +  (int64_t)exmimo_pci_kvirt[card].rxcnt_ptr[ant] - (int64_t)bigshm_top_kvirtptr[card]);
      openair0_exmimo_pci[card].txcnt_ptr[ant] = (unsigned int *) (bigshm_top[card] +  (int64_t)exmimo_pci_kvirt[card].txcnt_ptr[ant] - (int64_t)bigshm_top_kvirtptr[card]);
191
#else
192 193
      openair0_exmimo_pci[card].rxcnt_ptr[ant] = (unsigned int *) (bigshm_top[card] +  (int32_t)exmimo_pci_kvirt[card].rxcnt_ptr[ant] - (int32_t)bigshm_top_kvirtptr[card]);
      openair0_exmimo_pci[card].txcnt_ptr[ant] = (unsigned int *) (bigshm_top[card] +  (int32_t)exmimo_pci_kvirt[card].txcnt_ptr[ant] - (int32_t)bigshm_top_kvirtptr[card]);
194
#endif
195
    }
196

197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221
    for (ant=0; ant<openair0_num_antennas[card]; ant++) {
      openair0_exmimo_pci[card].adc_head[ant] = mmap( NULL,
          ADAC_BUFFERSZ_PERCHAN_B,
          PROT_READ|PROT_WRITE,
          MAP_SHARED, //|MAP_FIXED,//MAP_SHARED,
          openair0_fd,
          ( openair_mmap_RX(ant) | openair_mmap_Card(card) )<<PAGE_SHIFT );

      openair0_exmimo_pci[card].dac_head[ant] = mmap( NULL,
          ADAC_BUFFERSZ_PERCHAN_B,
          PROT_READ|PROT_WRITE,
          MAP_SHARED, //|MAP_FIXED,//MAP_SHARED,
          openair0_fd,
          ( openair_mmap_TX(ant) | openair_mmap_Card(card) )<<PAGE_SHIFT );

      if (openair0_exmimo_pci[card].adc_head[ant] == MAP_FAILED || openair0_exmimo_pci[card].dac_head[ant] == MAP_FAILED) {
        openair0_close();
        return -3;
      }
    }

    //printf("p_exmimo_config = %p, p_exmimo_id = %p\n", openair0_exmimo_pci.exmimo_config_ptr, openair0_exmimo_pci.exmimo_id_ptr);

    printf("card %d: ExpressMIMO %d, HW Rev %d, SW Rev 0x%d, %d antennas\n", card, openair0_exmimo_pci[card].exmimo_id_ptr->board_exmimoversion,
           openair0_exmimo_pci[card].exmimo_id_ptr->board_hwrev, openair0_exmimo_pci[card].exmimo_id_ptr->board_swrev, openair0_num_antennas[card]);
222

223 224 225
  } // end for(card)

  return 0;
226
}
227 228


229 230
int openair0_close(void)
{
231 232 233 234 235 236 237 238 239 240 241 242 243 244 245
  int ant;
  int card;

  close(openair0_fd);

  for (card=0; card<openair0_num_detected_cards; card++) {
    if (bigshm_top[card] != NULL && bigshm_top[card] != MAP_FAILED)
      munmap(bigshm_top[card], BIGSHM_SIZE_PAGES<<PAGE_SHIFT);

    for (ant=0; ant<openair0_num_antennas[card]; ant++) {
      if (openair0_exmimo_pci[card].adc_head[ant] != NULL && openair0_exmimo_pci[card].adc_head[ant] != MAP_FAILED)
        munmap(openair0_exmimo_pci[card].adc_head[ant], ADAC_BUFFERSZ_PERCHAN_B);

      if (openair0_exmimo_pci[card].dac_head[ant] != NULL && openair0_exmimo_pci[card].dac_head[ant] != MAP_FAILED)
        munmap(openair0_exmimo_pci[card].dac_head[ant], ADAC_BUFFERSZ_PERCHAN_B);
246
    }
247 248 249
  }

  return 0;
250 251 252 253
}

int openair0_dump_config(int card)
{
254
  return ioctl(openair0_fd, openair_DUMP_CONFIG, card);
255 256 257 258
}

int openair0_get_frame(int card)
{
259
  return ioctl(openair0_fd, openair_GET_FRAME, card);
260 261 262 263
}

int openair0_start_rt_acquisition(int card)
{
264
  return ioctl(openair0_fd, openair_START_RT_ACQUISITION, card);
265 266 267 268
}

int openair0_stop(int card)
{
269
  return ioctl(openair0_fd, openair_STOP, card);
270 271
}

272 273
int openair0_stop_without_reset(int card)
{
274
  return ioctl(openair0_fd, openair_STOP_WITHOUT_RESET, card);
275
}
276 277

#define MY_RF_MODE      (RXEN + TXEN + TXLPFNORM + TXLPFEN + TXLPF25 + RXLPFNORM + RXLPFEN + RXLPF25 + LNA1ON +LNAMax + RFBBNORM + DMAMODE_RX + DMAMODE_TX)
278
#define RF_MODE_BASE    (LNA1ON + RFBBNORM)
279

Raymond Knopp's avatar
Raymond Knopp committed
280 281 282 283 284 285 286 287 288 289 290 291 292 293
void rt_sleep(struct timespec *ts,long tv_nsec) {

  clock_gettime(CLOCK_MONOTONIC, ts);

  ts->tv_nsec += tv_nsec;

  if (ts->tv_nsec>=1000000000L) {
    ts->tv_nsec -= 1000000000L;
    ts->tv_sec++;
  }

  clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, ts, NULL);

}
294 295 296 297 298 299 300 301 302 303 304
static void *watchdog_thread(void *arg) {

  int policy, s, j;
  struct sched_param sparam;
  char cpu_affinity[1024];
  cpu_set_t cpuset;
  exmimo_state_t *exm=((openair0_device *)arg)->priv;
  openair0_config_t *cfg=&((openair0_device *)arg)->openair0_cfg[0];

  volatile unsigned int *daq_mbox = openair0_daq_cnt();
  unsigned int mbox,diff;
Raymond Knopp's avatar
Raymond Knopp committed
305
  int first_acquisition;
Raymond Knopp's avatar
Raymond Knopp committed
306 307 308 309
  struct timespec sleep_time,wait;


  wait.tv_sec=0;
310
  wait.tv_nsec=50000000L;
Raymond Knopp's avatar
Raymond Knopp committed
311

312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411
  /* Set affinity mask to include CPUs 1 to MAX_CPUS */
  /* CPU 0 is reserved for UHD threads */
  /* CPU 1 is reserved for all TX threads */
  /* Enable CPU Affinity only if number of CPUs >2 */
  CPU_ZERO(&cpuset);

#ifdef CPU_AFFINITY
  if (get_nprocs() > 2)
  {
    for (j = 1; j < get_nprocs(); j++)
        CPU_SET(j, &cpuset);
    s = pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);
    if (s != 0)
    {
      perror( "pthread_setaffinity_np");
      printf("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");
    printf("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));
  sparam.sched_priority = sched_get_priority_max(SCHED_FIFO);
  policy = SCHED_FIFO ; 
  
  s = pthread_setschedparam(pthread_self(), policy, &sparam);
  if (s != 0)
     {
     perror("pthread_setschedparam : ");
     printf("Error setting thread priority");
     }
  s = pthread_getschedparam(pthread_self(), &policy, &sparam);
  if (s != 0)
   {
     perror("pthread_getschedparam : ");
     printf("Error getting thread priority");

   }

 printf("EXMIMO2 Watchdog TX thread started on CPU %d TID %ld, sched_policy = %s , priority = %d, CPU Affinity=%s \n",
	sched_getcpu(),
	syscall(__NR_gettid),
	(policy == SCHED_FIFO)  ? "SCHED_FIFO" :
	(policy == SCHED_RR)    ? "SCHED_RR" :
	(policy == SCHED_OTHER) ? "SCHED_OTHER" :
	"???",
	sparam.sched_priority, 
	cpu_affinity );


  mlockall(MCL_CURRENT | MCL_FUTURE);

  exm->watchdog_exit = 0;
  exm->ts = 0;
  exm->last_mbox = 0;
  
  if (cfg->sample_rate==30.72e6) {
    exm->samples_per_tick  = 15360;
    exm->samples_per_frame = 307200; 
  }
  else if (cfg->sample_rate==23.04e6) {
    exm->samples_per_tick = 11520;
    exm->samples_per_frame = 230400; 
  }
  else if (cfg->sample_rate==15.36e6) {
    exm->samples_per_tick = 7680;
    exm->samples_per_frame = 153600; 
  }
  else if (cfg->sample_rate==7.68e6) {
    exm->samples_per_tick = 3840;
    exm->samples_per_frame = 76800; 
  }
  else if (cfg->sample_rate==3.84e6) {
    exm->samples_per_tick = 1920;
    exm->samples_per_frame = 38400; 
  }
  else if (cfg->sample_rate==1.92e6) {
    exm->samples_per_tick = 960;
    exm->samples_per_frame = 19200; 
  }
  else {
    printf("Unknown sampling rate %f, exiting \n",cfg->sample_rate);
    exm->watchdog_exit=1;
  }
Raymond Knopp's avatar
Raymond Knopp committed
412 413

  first_acquisition=1;
414 415
  printf("Locking watchdog for first acquisition\n");
  pthread_mutex_timedlock(&exm->watchdog_mutex,&wait);
416
  // main loop to keep up with DMA transfers from exmimo2
Raymond Knopp's avatar
Raymond Knopp committed
417 418

  int cnt_diff0=0;
419 420 421 422 423 424
  while ((!oai_exit) && (!exm->watchdog_exit)) {

    if (exm->daq_state == running) {

      // grab time from MBOX
      mbox = daq_mbox[0];
Raymond Knopp's avatar
Raymond Knopp committed
425

426 427 428 429 430 431 432 433
      if (mbox<exm->last_mbox) { // wrap-around
	diff = 150 + mbox - exm->last_mbox;
      }
      else {
	diff = mbox - exm->last_mbox;
      }
      exm->last_mbox = mbox;

434 435 436
      if (first_acquisition==0)
	pthread_mutex_timedlock(&exm->watchdog_mutex,&wait);

437 438
      exm->ts += (diff*exm->samples_per_frame/150) ; 

Raymond Knopp's avatar
Raymond Knopp committed
439

440 441 442
      if ((exm->daq_state == running) &&
	  (diff > 16)&&
	  (first_acquisition==0))  {// we're too late so exit
443
	exm->watchdog_exit = 1;
Raymond Knopp's avatar
Raymond Knopp committed
444 445 446 447
        printf("exiting, too late to keep up\n");
      }
      first_acquisition=0;

448 449
      if ((exm->daq_state == running) && 
	  (diff == 0)) {
Raymond Knopp's avatar
Raymond Knopp committed
450 451 452 453 454
	cnt_diff0++;
	if (cnt_diff0 == 10) {
	  exm->watchdog_exit = 1;
	  printf("exiting, HW stopped\n");
	}
Raymond Knopp's avatar
Raymond Knopp committed
455
      }
Raymond Knopp's avatar
Raymond Knopp committed
456 457
      else
	cnt_diff0=0;
458

459 460 461
      if ((exm->daq_state == running) &&
	  (exm->wait_first_read==0) &&
	  (exm->ts - exm->last_ts_rx > exm->samples_per_frame)) {
462
	exm->watchdog_exit = 1;
463 464
	printf("RX Overflow, exiting (TS %llu, TS last read %llu)\n",
	       exm->ts,exm->last_ts_rx);
465
      }
Raymond Knopp's avatar
Raymond Knopp committed
466
      //      printf("ts %lu, last_ts_rx %lu, mbox %d, diff %d\n",exm->ts, exm->last_ts_rx,mbox,diff);
467 468
      pthread_mutex_unlock(&exm->watchdog_mutex);
    }
469 470 471
    else {
      first_acquisition=1;
    }
Raymond Knopp's avatar
Raymond Knopp committed
472
    rt_sleep(&sleep_time,250000L);
473 474 475
  }
  
  oai_exit=1;
Raymond Knopp's avatar
Raymond Knopp committed
476
  printf("Exiting watchdog\n");
477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500
  return NULL;
}

void create_watchdog(openair0_device *dev) {
  
  exmimo_state_t *priv = dev->priv;
  priv->watchdog_exit=0;
#ifndef DEADLINE_SCHEDULER
  priv->watchdog_sched_param.sched_priority = sched_get_priority_max(SCHED_FIFO);  
  pthread_attr_setschedparam(&priv->watchdog_attr,&priv->watchdog_sched_param);
  pthread_attr_setschedpolicy(&priv->watchdog_attr,SCHED_FIFO);
  pthread_create(&priv->watchdog,&priv->watchdog_attr,watchdog_thread,dev);
#else
  pthread_create(&priv->watchdog,NULL,watchdog_thread,devv);
#endif
  pthread_mutex_init(&priv->watchdog_mutex,NULL);


}

int trx_exmimo_start(openair0_device *device) {

  exmimo_state_t *exm=device->priv;

Raymond Knopp's avatar
Raymond Knopp committed
501
  printf("Starting ...\n");
502
  openair0_config(device->openair0_cfg,0);
503 504
  openair0_start_rt_acquisition(0);
  exm->daq_state = running;  
505
  exm->wait_first_read = 1;
506 507 508 509 510 511 512 513
  return(0);
}

int trx_exmimo_write(openair0_device *device,openair0_timestamp ptimestamp, void **buff, int nsamps, int cc, int flags) {

  return(0);
}

514 515


516 517 518 519
int trx_exmimo_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int cc) {

  exmimo_state_t *exm=device->priv;
  openair0_config_t *cfg=&device->openair0_cfg[0];
Raymond Knopp's avatar
Raymond Knopp committed
520 521 522
  openair0_timestamp old_ts=0,ts,diff;
  struct timespec sleep_time;
  unsigned long tv_nsec;
523
  int i;
Raymond Knopp's avatar
Raymond Knopp committed
524
  struct timespec wait;
525 526
  int n,n1,n2,ntot,first_len;
  int ret;
527

Raymond Knopp's avatar
Raymond Knopp committed
528
  wait.tv_sec=0;
529
  wait.tv_nsec=50000000L;
Raymond Knopp's avatar
Raymond Knopp committed
530 531 532 533

  if (exm->watchdog_exit == 1)
    return(0);

534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566
  if (exm->daq_state == idle) {
    tv_nsec=(unsigned long)((double)(nsamps)*1e9/cfg->sample_rate);
    return(0);
  }
  ret = pthread_mutex_timedlock(&exm->watchdog_mutex,&wait);


  switch (ret) {
  case EINVAL:
#ifdef DEBUG_EXMIMO 
    printf("trx_exmimo_read: mutex_timedlock returned EINVAL\n");
#endif
    return(0);
    break;
  case ETIMEDOUT: 
#ifdef DEBUG_EXMIMO 
    printf("trx_exmimo_read: mutex_timedlock returned ETIMEDOUT\n");
#endif
    return(0);
    break;
  case EAGAIN: 
#ifdef DEBUG_EXMIMO 
    printf("trx_exmimo_read: mutex_timedlock returned EAGAIN\n");
#endif
    return(0);
    break;
  case EDEADLK: 
#ifdef DEBUG_EXMIMO 
    printf("trx_exmimo_read: mutex_timedlock returned EDEADLK\n");
#endif
    return(0);
    break;
  }
567
  ts = exm->ts;
568 569 570 571 572
  if (exm->wait_first_read==1) {
    exm->wait_first_read=0;
    exm->last_ts_rx = ts;
  }

573
  pthread_mutex_unlock(&exm->watchdog_mutex);
574 575 576 577 578 579 580 581 582 583
  //  dump_frame_parms(frame_parms[0]);
  
  if (nsamps > (exm->samples_per_frame>>1)) {
    n1 = nsamps>>1;
    n2 = nsamps-n1;
  }
  else {
    n1=nsamps;
    n2=0;
  }
584

Raymond Knopp's avatar
Raymond Knopp committed
585
#ifdef DEBUG_EXMIMO
586
  printf("Reading %d samples, ts %lu (%d), last_ts_rx %lu (%lu)\n",nsamps,ts,ts%exm->samples_per_frame,exm->last_ts_rx,exm->last_ts_rx+nsamps);
Raymond Knopp's avatar
Raymond Knopp committed
587
#endif
588 589 590 591 592 593
  for (n=n1,ntot=0;ntot<nsamps;n=n2) {
    while ((ts < exm->last_ts_rx + n) && 
	   (exm->watchdog_exit==0)) {
      
      diff = exm->last_ts_rx+n - ts; // difference in samples between current timestamp and last RX received sample
      // go to sleep until we should have enough samples (1024 for a bit more)
Raymond Knopp's avatar
Raymond Knopp committed
594
#ifdef DEBUG_EXMIMO
595 596
      printf("portion %d samples, ts %lu, last_ts_rx %lu (%lu) => sleeping %u us\n",n,ts,exm->last_ts_rx,exm->last_ts_rx+n,
	     (unsigned int)((double)(diff+1024)*1e6/cfg->sample_rate));
Raymond Knopp's avatar
Raymond Knopp committed
597
#endif
598 599 600 601 602 603 604 605 606 607 608 609 610 611 612
      tv_nsec=(unsigned long)((double)(diff+3840)*1e9/cfg->sample_rate);
      //    tv_nsec = 500000L;
      old_ts = ts;
      rt_sleep(&sleep_time,tv_nsec);
#ifdef DEBUG_EXMIMO
      printf("back\n");
#endif
      // get new timestamp, in case we have to sleep again
      pthread_mutex_timedlock(&exm->watchdog_mutex,&wait);
      ts = exm->ts;
      pthread_mutex_unlock(&exm->watchdog_mutex);
      if (old_ts == ts) {
	printf("ts stopped, returning\n");
	return(0);
      }
Raymond Knopp's avatar
Raymond Knopp committed
613
    }
Raymond Knopp's avatar
Raymond Knopp committed
614

615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639
  
  
    if (cfg->mmapped_dma == 0) {  // if buff is not the dma buffer, do a memcpy, otherwise do nothing
      for (i=0;i<cc;i++) {
#ifdef DEBUG_EXMIMO
	printf("copying to %p (%lu), from %llu\n",buff[i]+(ntot*sizeof(int)),ntot*sizeof(int),(exm->last_ts_rx % exm->samples_per_frame));
#endif
	if ((n+(exm->last_ts_rx%exm->samples_per_frame))<exm->samples_per_frame) {
	  memcpy(buff[i]+(ntot*sizeof(int)),
		 (void*)(openair0_exmimo_pci[0].adc_head[i]+(exm->last_ts_rx % exm->samples_per_frame)),
		 n*sizeof(int));
 	}
	else {
	  first_len =  (exm->samples_per_frame-(exm->last_ts_rx%exm->samples_per_frame));
#ifdef DEBUG_EXMIMO
	  printf("split: first_len %d, remainder %d\n",first_len,n-first_len);
#endif
	  memcpy(buff[i]+(ntot*sizeof(int)),
		 (void*)(openair0_exmimo_pci[0].adc_head[i]+(exm->last_ts_rx % exm->samples_per_frame)),
		 first_len*sizeof(int));
	  memcpy(buff[i]+(ntot+first_len)*sizeof(int),
		 (void*)openair0_exmimo_pci[0].adc_head[i],
		 (n-first_len)*sizeof(int));
	}
      }
640
    }
641 642 643 644 645 646 647 648
    pthread_mutex_timedlock(&exm->watchdog_mutex,&wait);
    exm->last_ts_rx += n;
    pthread_mutex_unlock(&exm->watchdog_mutex);    
    if (n==n1) {
      *ptimestamp=exm->last_ts_rx;
    }
    ntot+=n;
   }
649
  
650

651

Raymond Knopp's avatar
Raymond Knopp committed
652

Raymond Knopp's avatar
Raymond Knopp committed
653
  return(nsamps);
654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676
}

void trx_exmimo_end(openair0_device *device) {

  exmimo_state_t *exm=device->priv;

  exm->daq_state = idle;
  openair0_stop(0);
 
}

int trx_exmimo_get_stats(openair0_device* device) {

  return(0);

}

int trx_exmimo_reset_stats(openair0_device* device) {

  return(0);

}

677 678 679 680 681 682 683
int trx_exmimo_stop(openair0_device* device) {

  exmimo_state_t *exm=device->priv;

  printf("Stopping ...\n");
  exm->daq_state = idle;  
  openair0_stop(0);
684 685 686 687 688

  return(0);

}

689
int trx_exmimo_set_freq(openair0_device* device, openair0_config_t *openair0_cfg,int exmimo_dump_config) {
690

691
  openair0_set_frequencies(device,openair0_cfg,0);
692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707
  return(0);
}

int trx_exmimo_set_gains(openair0_device* device, openair0_config_t *openair0_cfg) {

  return(0);

}

void kill_watchdog(openair0_device *device) {

  exmimo_state_t *exm=(exmimo_state_t *)device->priv;
  exm->watchdog_exit=1;

}

708
int device_init(openair0_device *device, openair0_config_t *openair0_cfg) {
709 710

  // Initialize card
711
  //  exmimo_config_t         *p_exmimo_config;
712
  exmimo_id_t             *p_exmimo_id;
713
  int ret;
714
  exmimo_state_t *exm = (exmimo_state_t *)malloc(sizeof(exmimo_state_t));
715

716
  ret = openair0_open();
717
 
718 719 720
  if ( ret != 0 ) {
    if (ret == -1)
      printf("Error opening /dev/openair0");
721

722 723
    if (ret == -2)
      printf("Error mapping bigshm");
724

725 726
    if (ret == -3)
      printf("Error mapping RX or TX buffer");
727

728 729 730
    return(ret);
  }

731 732
  if (openair0_num_detected_cards>MAX_CARDS) {
    printf ("Detected %d number of cards, but MAX_CARDS=%d\n", openair0_num_detected_cards, MAX_CARDS);
733
  } else {
734 735 736
    printf ("Detected %d number of cards, %d number of antennas.\n", openair0_num_detected_cards, openair0_num_antennas[0]);
  }

737
  //  p_exmimo_config = openair0_exmimo_pci[0].exmimo_config_ptr;
738
  p_exmimo_id     = openair0_exmimo_pci[0].exmimo_id_ptr;
739

740 741 742 743 744
  printf("Card %d: ExpressMIMO %d, HW Rev %d, SW Rev 0x%d\n", 0, p_exmimo_id->board_exmimoversion, p_exmimo_id->board_hwrev, p_exmimo_id->board_swrev);

  // check if the software matches firmware
  if (p_exmimo_id->board_swrev!=BOARD_SWREV_CNTL2) {
    printf("Software revision %d and firmware revision %d do not match. Please update either the firmware or the software!\n",BOARD_SWREV_CNTL2,p_exmimo_id->board_swrev);
745 746
    return(-1);
  }
747

748 749
  device->type             = EXMIMO_DEV; 

750 751 752 753 754 755 756 757 758 759 760 761 762 763 764
  // Add stuff that was in lte-softmodem here

  //
  device->trx_start_func = trx_exmimo_start;
  device->trx_end_func   = trx_exmimo_end;
  device->trx_read_func  = trx_exmimo_read;
  device->trx_write_func = trx_exmimo_write;
  device->trx_get_stats_func   = trx_exmimo_get_stats;
  device->trx_reset_stats_func = trx_exmimo_reset_stats;
  device->trx_stop_func        = trx_exmimo_stop;
  device->trx_set_freq_func    = trx_exmimo_set_freq;
  device->trx_set_gains_func   = trx_exmimo_set_gains;
  device->openair0_cfg = openair0_cfg;
  device->priv = (void *)exm;

765

Raymond Knopp's avatar
Raymond Knopp committed
766

767 768
  create_watchdog(device);

769 770
  return(0);
}
771

knopp's avatar
knopp committed
772 773 774 775 776 777 778
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};

779
int openair0_config(openair0_config_t *openair0_cfg, int UE_flag)
780 781 782 783 784
{
  int ret;
  int ant, card;
  int resampling_factor=2;
  int rx_filter=RXLPF25, tx_filter=TXLPF25;
785
  int ACTIVE_RF=0;
786
  int i;
787

788 789
  exmimo_config_t         *p_exmimo_config;
  exmimo_id_t             *p_exmimo_id;
790

791 792 793
  if (!openair0_cfg) {
    printf("Error, openair0_cfg is null!!\n");
    return(-1);
794 795
  }

796
  for (card=0; card<openair0_num_detected_cards; card++) {
797

798 799
    p_exmimo_config = openair0_exmimo_pci[card].exmimo_config_ptr;
    p_exmimo_id     = openair0_exmimo_pci[card].exmimo_id_ptr;
800

801
    if (p_exmimo_id->board_swrev>=9)
802 803
      p_exmimo_config->framing.eNB_flag   = 0;
    else
804
      p_exmimo_config->framing.eNB_flag   = !UE_flag;
805

806 807 808 809 810 811
    if (openair0_num_detected_cards==1)
      p_exmimo_config->framing.multicard_syncmode=SYNCMODE_FREE;
    else if (card==0)
      p_exmimo_config->framing.multicard_syncmode=SYNCMODE_MASTER;
    else
      p_exmimo_config->framing.multicard_syncmode=SYNCMODE_SLAVE;
812

813 814 815
    /* device specific */
    openair0_cfg[card].iq_txshift = 4;//shift
    openair0_cfg[card].iq_rxrescale = 15;//rescale iqs
816

817

818 819 820 821
    if (openair0_cfg[card].sample_rate==30.72e6) {
      resampling_factor = 0;
      rx_filter = RXLPF10;
      tx_filter = TXLPF10;
822
    } else if (openair0_cfg[card].sample_rate==15.36e6) {
823 824 825
      resampling_factor = 1;
      rx_filter = RXLPF5;
      tx_filter = TXLPF5;
826
    } else if (openair0_cfg[card].sample_rate==7.68e6) {
827 828 829
      resampling_factor = 2;
      rx_filter = RXLPF25;
      tx_filter = TXLPF25;
830
    } else {
831 832 833 834
      printf("Sampling rate not supported, using default 7.68MHz");
      resampling_factor = 2;
      rx_filter = RXLPF25;
      tx_filter = TXLPF25;
835

836
    }
837

838
#if (BOARD_SWREV_CNTL2>=0x0A)
839

840 841
    for (ant=0; ant<4; ant++)
      p_exmimo_config->framing.resampling_factor[ant] = resampling_factor;
842

843 844 845
#else
    p_exmimo_config->framing.resampling_factor = resampling_factor;
#endif
846 847

    for (ant=0; ant<4; ant++) {
Raymond Knopp's avatar
Raymond Knopp committed
848 849 850 851

      openair0_cfg[card].rxbase[ant] = (int32_t*)openair0_exmimo_pci[card].adc_head[ant];
      openair0_cfg[card].txbase[ant] = (int32_t*)openair0_exmimo_pci[card].dac_head[ant];

852
      if (openair0_cfg[card].rx_freq[ant] || openair0_cfg[card].tx_freq[ant]) {
853
	ACTIVE_RF += (1<<ant)<<5;
854
        p_exmimo_config->rf.rf_mode[ant] = RF_MODE_BASE;
855 856
        p_exmimo_config->rf.do_autocal[ant] = 1;//openair0_cfg[card].autocal[ant];
	printf("card %d, antenna %d, autocal %d\n",card,ant,openair0_cfg[card].autocal[ant]);
857
      }
858

Raymond Knopp's avatar
Raymond Knopp committed
859
      if (openair0_cfg[card].tx_freq[ant]>0) {
860 861 862
        p_exmimo_config->rf.rf_mode[ant] += (TXEN + DMAMODE_TX + TXLPFNORM + TXLPFEN + tx_filter);
        p_exmimo_config->rf.rf_freq_tx[ant] = (unsigned int)openair0_cfg[card].tx_freq[ant];
        p_exmimo_config->rf.tx_gain[ant][0] = (unsigned int)openair0_cfg[card].tx_gain[ant];
Raymond Knopp's avatar
Raymond Knopp committed
863
        printf("openair0 : programming card %d TX antenna %d (freq %u, gain %d)\n",card,ant,p_exmimo_config->rf.rf_freq_tx[ant],p_exmimo_config->rf.tx_gain[ant][0]);
864 865 866 867 868 869

	printf("Setting TX buffer to all-RX\n");

	for (i=0;i<307200;i++) {
	  ((uint32_t*)openair0_exmimo_pci[card].dac_head[ant])[i] = 0x00010001;
	}
870
      }
871

Raymond Knopp's avatar
Raymond Knopp committed
872
      if (openair0_cfg[card].rx_freq[ant]>0) {
873 874 875
        p_exmimo_config->rf.rf_mode[ant] += (RXEN + DMAMODE_RX + RXLPFNORM + RXLPFEN + rx_filter);

        p_exmimo_config->rf.rf_freq_rx[ant] = (unsigned int)openair0_cfg[card].rx_freq[ant];
knopp's avatar
knopp committed
876

877 878 879 880 881 882
        printf("openair0 : programming card %d RX antenna %d (freq %u, gain %d)\n",card,ant,p_exmimo_config->rf.rf_freq_rx[ant],p_exmimo_config->rf.rx_gain[ant][0]);

        switch (openair0_cfg[card].rxg_mode[ant]) {
        default:
        case max_gain:
          p_exmimo_config->rf.rf_mode[ant] += LNAMax;
knopp's avatar
knopp committed
883 884 885 886 887 888 889
	  if (rxg_max[ant] >= (int)openair0_cfg[card].rx_gain[ant]) {
	    p_exmimo_config->rf.rx_gain[ant][0] = 30 - (rxg_max[ant] - (int)openair0_cfg[card].rx_gain[ant]); //was measured at rxgain=30;
	  }
	  else {
	    printf("openair0: RX RF gain too high, reduce by %d dB\n", (int)openair0_cfg[card].rx_gain[ant]-rxg_max[ant]);
	    exit(-1);
	  }
890 891 892 893
          break;

        case med_gain:
          p_exmimo_config->rf.rf_mode[ant] += LNAMed;
knopp's avatar
knopp committed
894 895 896 897 898 899 900
	  if (rxg_med[ant] >= (int)openair0_cfg[card].rx_gain[ant]) {
	    p_exmimo_config->rf.rx_gain[ant][0] = 30 - (rxg_med[ant] - (int)openair0_cfg[card].rx_gain[ant]); //was measured at rxgain=30;
	  }
	  else {
	    printf("openair0: RX RF gain too high, reduce by %d dB\n", (int)openair0_cfg[card].rx_gain[ant]-rxg_med[ant]);
	    exit(-1);
	  }
901 902 903 904
          break;

        case byp_gain:
          p_exmimo_config->rf.rf_mode[ant] += LNAByp;
knopp's avatar
knopp committed
905 906 907 908 909 910 911
	  if (rxg_byp[ant] >= (int)openair0_cfg[card].rx_gain[ant]) {
	    p_exmimo_config->rf.rx_gain[ant][0] = 30 - (rxg_byp[ant] - (int)openair0_cfg[card].rx_gain[ant]); //was measured at rxgain=30;
	  }
	  else {
	    printf("openair0: RX RF gain too high, reduce by %d dB\n", (int)openair0_cfg[card].rx_gain[ant]-rxg_byp[ant]);
	    exit(-1);
	  }
912 913 914 915 916
          break;
        }
      } else {
        p_exmimo_config->rf.rf_mode[ant] = 0;
        p_exmimo_config->rf.do_autocal[ant] = 0;
917
      }
918

919 920
      p_exmimo_config->rf.rf_local[ant]   = rf_local[ant];
      p_exmimo_config->rf.rf_rxdc[ant]    = rf_rxdc[ant];
921

922
      if (( p_exmimo_config->rf.rf_freq_tx[ant] >= 790000000) && ( p_exmimo_config->rf.rf_freq_tx[ant] <= 865000000)) {
923 924 925 926 927 928 929 930
        p_exmimo_config->rf.rf_vcocal[ant]  = rf_vcocal_850[ant];
        p_exmimo_config->rf.rffe_band_mode[ant] = DD_TDD;
      } else if (( p_exmimo_config->rf.rf_freq_tx[ant] >= 1900000000) && ( p_exmimo_config->rf.rf_freq_tx[ant] <= 2000000000)) {
        p_exmimo_config->rf.rf_vcocal[ant]  = rf_vcocal[ant];
        p_exmimo_config->rf.rffe_band_mode[ant] = B19G_TDD;
      } else {
        p_exmimo_config->rf.rf_vcocal[ant]  = rf_vcocal[ant];
        p_exmimo_config->rf.rffe_band_mode[ant] = 0;
931 932
      }
    }
933

934
    if (openair0_cfg[card].duplex_mode==duplex_mode_FDD) {
935
      p_exmimo_config->framing.tdd_config = DUPLEXMODE_FDD;// + TXRXSWITCH_LSB + TXRXSWITCH_LSB + ACTIVE_RF+ ACTIVE_RF;
936 937 938 939 940 941 942
      printf("!!!!!setting FDD (tdd_config=%d)\n",p_exmimo_config->framing.tdd_config);
    } 
    else {
      p_exmimo_config->framing.tdd_config = DUPLEXMODE_TDD + TXRXSWITCH_LSB + ACTIVE_RF;
      printf("!!!!!setting TDD (tdd_config=%d)\n",p_exmimo_config->framing.tdd_config);
    }

943
    ret = ioctl(openair0_fd, openair_DUMP_CONFIG, card);
944

945 946
    if (ret!=0)
      return(-1);
947

948
  }
949

950
  return(0);
951 952
}

953 954
int openair0_reconfig(openair0_config_t *openair0_cfg)
{
955

956 957 958
  int ant, card;

  exmimo_config_t         *p_exmimo_config;
959
  //  exmimo_id_t             *p_exmimo_id;
960 961 962 963 964 965

  if (!openair0_cfg) {
    printf("Error, openair0_cfg is null!!\n");
    return(-1);
  }

966 967 968
#ifdef DEBUG_EXMIMO
  printf("Reconfiguration of gains/frequencies\n");
#endif
969 970 971
  for (card=0; card<openair0_num_detected_cards; card++) {

    p_exmimo_config = openair0_exmimo_pci[card].exmimo_config_ptr;
972
    //    p_exmimo_id     = openair0_exmimo_pci[card].exmimo_id_ptr;
973 974

    for (ant=0; ant<4; ant++) {
975
      if (openair0_cfg[card].tx_freq[ant]) {
976 977
        p_exmimo_config->rf.rf_freq_tx[ant] = (unsigned int)openair0_cfg[card].tx_freq[ant];
        p_exmimo_config->rf.tx_gain[ant][0] = (unsigned int)openair0_cfg[card].tx_gain[ant];
978 979 980
#ifdef DEBUG_EXMIMO
        printf("openair0 -  %d : programming TX antenna %d (freq %u, gain %d)\n",card,ant,p_exmimo_config->rf.rf_freq_tx[ant],p_exmimo_config->rf.tx_gain[ant][0]);
#endif
981
      }
982

Raymond Knopp's avatar
Raymond Knopp committed
983

984
      if (openair0_cfg[card].rx_freq[ant]) {
985 986
        p_exmimo_config->rf.rf_freq_rx[ant] = (unsigned int)openair0_cfg[card].rx_freq[ant];
        p_exmimo_config->rf.rx_gain[ant][0] = (unsigned int)openair0_cfg[card].rx_gain[ant];
987 988 989
#ifdef DEBUG_EXMIMO
        printf("openair0 -  %d : programming RX antenna %d (freq %u, gain %d)\n",card,ant,p_exmimo_config->rf.rf_freq_rx[ant],p_exmimo_config->rf.rx_gain[ant][0]);
#endif
990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003
        switch (openair0_cfg[card].rxg_mode[ant]) {
        default:
        case max_gain:
          p_exmimo_config->rf.rf_mode[ant] = (p_exmimo_config->rf.rf_mode[ant]&(~LNAGAINMASK))|LNAMax;
          break;

        case med_gain:
          p_exmimo_config->rf.rf_mode[ant] = (p_exmimo_config->rf.rf_mode[ant]&(~LNAGAINMASK))|LNAMed;
          break;

        case byp_gain:
          p_exmimo_config->rf.rf_mode[ant] = (p_exmimo_config->rf.rf_mode[ant]&(~LNAGAINMASK))|LNAByp;
          break;
        }
1004 1005 1006
      }
    }
  }
1007

1008 1009 1010
  return(0);
}

1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
int openair0_set_frequencies(openair0_device* device, openair0_config_t *openair0_cfg,int exmimo_dump_config) {

  if (exmimo_dump_config > 0) {
    // do a full configuration
    openair0_config(openair0_cfg,0);
  }
  else {  // just change the frequencies in pci descriptor
    openair0_reconfig(openair0_cfg);
  }
  return(0);
  
}
1023

1024 1025 1026 1027
int openair0_set_gains(openair0_device* device, openair0_config_t *openair0_cfg){
  return(0);
}

1028
unsigned int *openair0_daq_cnt(void) {
1029 1030 1031 1032

  return((unsigned int *)openair0_exmimo_pci[0].rxcnt_ptr[0]);

}