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comparison src/g23m-gsm/rr/rr_datp.c @ 104:27a4235405c6

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src/g23m-gsm: import from LoCosto source
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 04 Oct 2016 18:24:05 +0000
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103:76d139c7a25e 104:27a4235405c6
1 /*
2 +-----------------------------------------------------------------------------
3 | Project :
4 | Modul :
5 +-----------------------------------------------------------------------------
6 | Copyright 2002 Texas Instruments Berlin, AG
7 | All rights reserved.
8 |
9 | This file is confidential and a trade secret of Texas
10 | Instruments Berlin, AG
11 | The receipt of or possession of this file does not convey
12 | any rights to reproduce or disclose its contents or to
13 | manufacture, use, or sell anything it may describe, in
14 | whole, or in part, without the specific written consent of
15 | Texas Instruments Berlin, AG.
16 +-----------------------------------------------------------------------------
17 | Purpose : This Modul defines the functions for the data transfer
18 | capability of the module Radio Resource.
19 +-----------------------------------------------------------------------------
20 */
21
22 #ifndef RR_DATP_C
23 #define RR_DATP_C
24
25 #define ENTITY_RR
26
27 /*==== INCLUDES ===================================================*/
28
29 #include <string.h>
30 #include <stdlib.h>
31 #include <stddef.h> /* offsetof */
32 #include <stdio.h> /* sprintf */
33 #include "typedefs.h"
34 #include "pcm.h"
35 #include "pconst.cdg"
36 #include "mconst.cdg"
37 #include "message.h"
38 #include "ccdapi.h"
39 #include "vsi.h"
40 #include "custom.h"
41 #include "gsm.h"
42 #include "prim.h"
43 #include "cnf_rr.h"
44 #include "tok.h"
45 #include "rr.h"
46 #include "rr_em.h"
47
48 /*==== EXPORT =====================================================*/
49 #if defined (REL99) && defined (TI_PS_FF_EMR)
50 #define MAX_MSTRUCT_CCD_RR MAXIMUM(MAX_MSTRUCT_LEN_RR_SHORT, MAX_MSTRUCT_LEN_RR)
51 GLOBAL UBYTE _decodedMsg [MAX_MSTRUCT_CCD_RR];
52 #else
53 GLOBAL UBYTE _decodedMsg [MAX_MSTRUCT_LEN_RR];
54 #endif
55
56
57 /*==== PRIVAT =====================================================*/
58
59 /*==== VARIABLES ==================================================*/
60
61 /*==== FUNCTIONS ==================================================*/
62
63 /*
64 * -------------------------------------------------------------------
65 * PRIMITIVE Processing functions
66 * -------------------------------------------------------------------
67 */
68
69 /*
70 +--------------------------------------------------------------------+
71 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
72 | STATE : code ROUTINE : dat_init_rr_data |
73 +--------------------------------------------------------------------+
74
75 PURPOSE : Initialize the RR data for the module data transfer.
76
77 */
78
79 GLOBAL void dat_init_rr_data (void)
80 {
81 GET_INSTANCE_DATA;
82 TRACE_FUNCTION ("dat_init_rr_data()");
83
84 SET_STATE (STATE_DAT, DAT_NULL);
85 }
86
87
88 /*
89 +--------------------------------------------------------------------+
90 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
91 | STATE : code ROUTINE : dat_dl_establish_cnf |
92 +--------------------------------------------------------------------+
93
94 PURPOSE : Process the primitive DL_ESTABLISH_CNF received from DL.
95
96 */
97 GLOBAL void dat_dl_establish_cnf (T_DL_ESTABLISH_CNF *dl_establish_cnf_orig)
98 {
99 GET_INSTANCE_DATA;
100 /*
101 * sys infos during l2 establishment are
102 * lost, inform layer 1 to send them again
103 */
104 PPASS(dl_establish_cnf_orig, dl_establish_cnf, DL_ESTABLISH_CNF);
105
106 TRACE_FUNCTION ("dat_dl_establish_cnf()");
107 rr_data->net_lost = FALSE;
108 TRACE_EVENT_P1("rr_data->net_lost = %u", rr_data->net_lost);
109
110 switch (GET_STATE (STATE_DAT))
111 {
112 case DAT_CHAN_ASS_1:
113 case DAT_CHAN_ASS_2:
114 case DAT_IMM_ASS_1:
115
116 break;
117 default :
118 if (dl_establish_cnf->sapi EQ SAPI_0)
119 {
120 PALLOC (mph_sync_req, MPH_SYNC_REQ);
121 mph_sync_req->cs = CS_CLEAN_SYS_INFO;
122 PSENDX (PL, mph_sync_req);
123 }
124 break;
125 }
126
127 switch (GET_STATE (STATE_DAT))
128 {
129 case DAT_CHAN_ASS_1:
130 /*
131 * successfull establishment of new layer 2 connection
132 * after channel assignment
133 */
134
135 EM_DL_ESTABLISH_CNF;
136
137 PFREE (dl_establish_cnf);
138
139 if (rr_data->sc_data.ch_mode NEQ
140 rr_data->cr_data.ch_mode)
141 {
142 /*
143 * a changed channel mode has been detected.
144 * update channel description and channel mode
145 * for the serving cell and inform MM about the
146 * new channel mode.
147 */
148 memcpy (&rr_data->sc_data.chan_desc,
149 &rr_data->cr_data.chan_desc,
150 sizeof (T_chan_desc));
151 rr_data->sc_data.ch_mode = rr_data->cr_data.ch_mode;
152 dat_code_channel_mode_to_mm ();
153 }
154
155 if (rr_data->cr_data.ciph_on NEQ
156 rr_data->sc_data.ciph_on)
157 {
158 /*
159 * the ciphering has changed. Inform MM about the new
160 * ciphering.
161 */
162 dat_code_ciphering_to_mm (rr_data->cr_data.ciph_on);
163 }
164
165 /*
166 * copy cr data to sc data and go back to normal dedicated mode.
167 */
168 rr_data->sc_data.ciph_on = rr_data->cr_data.ciph_on;
169 rr_data->sc_data.algo = rr_data->cr_data.algo;
170 rr_data->sc_data.ch_mode = rr_data->cr_data.ch_mode;
171 rr_data->sc_data.cd.v_cell_chan_desc =
172 rr_data->cr_data.cd.v_cell_chan_desc;
173 memcpy (&rr_data->sc_data.cd.cell_chan_desc,
174 &rr_data->cr_data.cd.cell_chan_desc,
175 sizeof (T_LIST));
176 memcpy (&rr_data->sc_data.chan_desc,
177 &rr_data->cr_data.chan_desc,
178 sizeof (T_chan_desc));
179 memcpy (&rr_data->sc_data.amr_conf,
180 &rr_data->cr_data.amr_conf,
181 sizeof (T_multirate_conf));
182
183 rr_data->nc_data[CR_INDEX].arfcn = NOT_PRESENT_16BIT;
184 att_remove_multiple_channels ();
185 SET_STATE (STATE_SAPI_3, SMS_IDLE);
186 srv_use_stored_prim ();
187 dat_set_last_used_channel (&rr_data->sc_data.chan_desc);
188 att_dat_dedicated ();
189 dat_emo_stop ( TRUE );
190 SET_STATE (STATE_DAT, DAT_DEDICATED);
191 rr_data->mode_after_dedi = MODE_CELL_RESELECTION;
192 break;
193
194 case DAT_CHAN_ASS_2:
195 /*
196 * successfull reconnection on old channel after failed
197 * channel assignment
198 *
199 * update some parameters to go back to normal dedicated mode.
200 */
201 PFREE (dl_establish_cnf);
202 srv_use_stored_prim ();
203 SET_STATE (STATE_SAPI_3, SMS_IDLE);
204 att_dat_dedicated ();
205 rr_data->nc_data[CR_INDEX].arfcn = NOT_PRESENT_16BIT;
206 SET_STATE (STATE_DAT, DAT_DEDICATED);
207
208 rr_data->mode_after_dedi = MODE_CELL_RESELECTION;
209
210 EM_ASS_FAILURE_RECONNECT_SUCCESS;
211
212 break;
213
214 case DAT_DEDICATED:
215 /*
216 * An establish confirm in normal dedicated mode is only
217 * expected for short messages (SAPI 3)
218 */
219 if (dl_establish_cnf->sapi EQ SAPI_3)
220 {
221 SET_STATE (STATE_SAPI_3, SMS_ESTABLISHED);
222 srv_use_stored_prim ();
223 }
224 PFREE (dl_establish_cnf);
225 break;
226
227 case DAT_HANDOVER_4:
228 TRACE_EVENT ("DL_ESTABLISH_CNF");
229
230 EM_L2_CONNECTION_ESTABLISHED;
231
232 PFREE (dl_establish_cnf);
233
234 /*
235 * successfull establishment of new layer 2 connection
236 * after handover
237 */
238 if (rr_data->sc_data.ch_mode NEQ
239 rr_data->cr_data.ch_mode)
240 {
241 /*
242 * a changed channel mode has been detected.
243 * update channel description and channel mode
244 * for the serving cell and inform MM about the
245 * new channel mode.
246 */
247 memcpy (&rr_data->sc_data.chan_desc,
248 &rr_data->cr_data.chan_desc,
249 sizeof (T_chan_desc));
250 rr_data->sc_data.ch_mode = rr_data->cr_data.ch_mode;
251 dat_code_channel_mode_to_mm ();
252 }
253
254 if (rr_data->cr_data.ciph_on NEQ rr_data->sc_data.ciph_on)
255 {
256 /*
257 * the ciphering has changed. Inform MM about the new
258 * ciphering.
259 */
260 dat_code_ciphering_to_mm (rr_data->cr_data.ciph_on);
261 }
262
263 /*
264 * copy cr data to sc data and go back to normal dedicated mode.
265 */
266 rr_data->sc_data.ciph_on = rr_data->cr_data.ciph_on;
267 rr_data->sc_data.algo = rr_data->cr_data.algo;
268 rr_data->sc_data.ch_mode = rr_data->cr_data.ch_mode;
269 rr_data->sc_data.cd.v_cell_chan_desc =
270 rr_data->cr_data.cd.v_cell_chan_desc;
271 memcpy (&rr_data->sc_data.cd.cell_chan_desc,
272 &rr_data->cr_data.cd.cell_chan_desc,
273 sizeof (T_LIST));
274 memcpy (&rr_data->sc_data.chan_desc,
275 &rr_data->cr_data.chan_desc,
276 sizeof (T_chan_desc));
277 memcpy (&rr_data->sc_data.amr_conf,
278 &rr_data->cr_data.amr_conf,
279 sizeof (T_multirate_conf));
280
281 rr_data->nc_data[SC_INDEX].bsic = rr_data->nc_data[CR_INDEX].bsic;
282 rr_data->nc_data[SC_INDEX].arfcn = rr_data->nc_data[CR_INDEX].arfcn;
283 rr_data->nc_data[CR_INDEX].arfcn = NOT_PRESENT_16BIT;
284 /*
285 * after a handover we cannot come back directly to the
286 * cell instead we have to do a normal cell reselection
287 */
288 rr_data->mode_after_dedi = MODE_CELL_RESELECTION;
289 att_remove_multiple_channels ();
290 SET_STATE (STATE_SAPI_3, SMS_IDLE);
291 srv_use_stored_prim ();
292 dat_set_last_used_channel (&rr_data->sc_data.chan_desc);
293 att_dat_dedicated ();
294 dat_emo_stop ( TRUE );
295 SET_STATE (STATE_DAT, DAT_DEDICATED);
296 break;
297
298 case DAT_HANDOVER_5:
299 TRACE_EVENT ("DL_ESTABLISH_CNF");
300 /*
301 * successfull reconnection on old channel after failed
302 * handover
303 *
304 * update some parameters to go back to normal dedicated mode.
305 */
306 PFREE (dl_establish_cnf);
307 srv_use_stored_prim ();
308 SET_STATE (STATE_SAPI_3, SMS_IDLE);
309 att_dat_dedicated ();
310 rr_data->nc_data[CR_INDEX].arfcn = NOT_PRESENT_16BIT;
311 SET_STATE (STATE_DAT, DAT_DEDICATED);
312
313 rr_data->mode_after_dedi = MODE_CELL_RESELECTION;
314
315 EM_HO_FAILURE_RECONNECT_SUCCESS;
316 break;
317
318 case DAT_IMM_ASS_1:
319 /*
320 * successfull establishment of a dedicated connection.
321 * Depending on the originator of the connection MM
322 * is informed.
323 */
324 EM_L2_CONNECTION_ESTABLISHED;
325
326 #ifdef GPRS
327 if(! dat_check_packet_access())
328 {
329 #endif
330 if (rr_data->ms_data.establish_cause EQ ESTCS_PAGING)
331 {
332 PREUSE (dl_establish_cnf, rr_establish_ind, RR_ESTABLISH_IND);
333 PSENDX (MM, rr_establish_ind);
334 }
335 else
336 {
337 PREUSE (dl_establish_cnf, rr_establish_cnf, RR_ESTABLISH_CNF);
338 PSENDX (MM, rr_establish_cnf);
339 }
340 #ifdef GPRS
341 }
342 else
343 { /* packet access */
344 PFREE (dl_establish_cnf);
345 }
346 #endif
347
348
349 /*
350 * initialize some variables for the dedicated mode.
351 */
352 rr_data->dyn_config.fho = 0;
353 rr_data->dyn_config.fca = 0;
354 rr_data->tch_loop_subch = NOT_PRESENT_8BIT;
355 rr_data->sc_data.ciph_received = FALSE;
356 rr_data->rel_cause = RRCS_INT_NOT_PRESENT;
357 rr_data->sc_data.ciph_on = CIPH_OFF;
358 att_copy_old_lai_rac(SC_INDEX);
359 #if 0
360 memcpy (&rr_data->old_lai,
361 &rr_data->nc_data[SC_INDEX].lai,
362 sizeof (rr_data->old_lai));
363 rr_data->old_cell_id = rr_data->nc_data[SC_INDEX].cell_id;
364 #endif
365 SET_STATE (STATE_SAPI_3, SMS_IDLE);
366 att_dat_dedicated ();
367 SET_STATE (STATE_DAT, DAT_DEDICATED);
368
369 /*
370 * Early classmark Sending is performed if the mobile supports it
371 * and the network requests it.
372 */
373
374 if (rr_data->ms_data.classmark2.es_ind AND
375 rr_data->nc_data[SC_INDEX].c2_par.ecsc)
376 {
377 /*
378 * building of the Early Classmark Sending message
379 */
380
381 /* Implements RR Clone findings #15 */
382 dat_class_chng_data_req();
383 }
384
385
386 #ifdef GPRS
387 dat_gprs_suspend_req ();
388 #endif
389
390 EM_EARLY_CLASSMARK_SENDING;
391 break;
392
393 #ifdef GPRS
394 case DAT_PDCH_ASS_4:
395 dat_rrgrr_reconnect_dcch_cnf (RECONN_OK);
396 SET_STATE (STATE_DAT, DAT_DEDICATED);
397 PFREE (dl_establish_cnf);
398 break;
399
400 case DAT_CCO_4:
401 if ( rr_data->gprs_data.cco_need_reconnect_cnf )
402 {
403 dat_rrgrr_reconnect_dcch_cnf (RECONN_OK);
404 }
405 else
406 {
407 /*
408 * GRR has received d_change_order message,
409 * but the BCCH reading in the new cell failed.
410 * The connection is resumed on the old channel
411 * in dedicated mode.
412 */
413
414 PALLOC (rrgrr_sync_ind, RRGRR_SYNC_IND);
415 rrgrr_sync_ind->sync_res = SYNC_FAILED;
416 PSENDX (GRR, rrgrr_sync_ind);
417 }
418 SET_STATE (STATE_DAT, DAT_DEDICATED);
419 PFREE (dl_establish_cnf);
420 break;
421 #endif
422
423 default:
424 PFREE (dl_establish_cnf);
425 break;
426 }
427 }
428
429 /*
430 +--------------------------------------------------------------------+
431 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
432 | STATE : code ROUTINE : dat_dl_establish_ind |
433 +--------------------------------------------------------------------+
434
435 PURPOSE : Process the primitive DL_ESTABLISH_IND received from DL.
436 This is only expected for short messages on SAPI 3 during
437 a connection.
438
439 */
440
441 GLOBAL void dat_dl_establish_ind (T_DL_ESTABLISH_IND *dl_establish_ind)
442 {
443 GET_INSTANCE_DATA;
444
445 TRACE_FUNCTION ("dat_dl_establish_ind()");
446
447 switch (GET_STATE (STATE_DAT))
448 {
449 case DAT_DEDICATED:
450 /*
451 * if it indicates a mobile terminated connection establishment
452 * for SAPI 3 in the layer 2, change the state in RR for SMS.
453 * Answers from upper layer for SMS can be forwarded then
454 * immediately.
455 */
456 if (dl_establish_ind->sapi EQ SAPI_3)
457 {
458 /*
459 * set state for SMS if it is on SAPI 3
460 */
461 SET_STATE (STATE_SAPI_3, SMS_ESTABLISHED);
462 srv_use_stored_prim ();
463 }
464 break;
465
466 default:
467 break;
468 }
469 PFREE (dl_establish_ind);
470 }
471
472 /*
473 +--------------------------------------------------------------------+
474 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
475 | STATE : code ROUTINE : dat_mph_random_access_cnf |
476 +--------------------------------------------------------------------+
477
478 PURPOSE : Layer 1 confirms with the primitive MPH_RANDOM_ACCESS_CNF
479 the sending of a random burst during connection establishment.
480
481 */
482
483 GLOBAL void dat_mph_random_access_cnf (T_MPH_RANDOM_ACCESS_CNF *mph_random_access_cnf)
484 {
485 GET_INSTANCE_DATA;
486 TRACE_FUNCTION ("dat_mph_random_access_cnf()");
487
488 EM_CHANNEL_REQUEST_SENT;
489
490 switch (GET_STATE (STATE_DAT))
491 {
492 case DAT_IMM_ASS:
493 if (rr_data->ms_data.access_counter < rr_data->ms_data.max_attempt)
494 {
495 /*
496 * if it the last or less then last random burst
497 * copy the frame number of the random burst for later
498 * comparision with the request reference of an immediate
499 * assignment message.
500 */
501 memcpy (&rr_data->used_frame_no[rr_data->ms_data.access_counter],
502 &mph_random_access_cnf->frame_no,
503 sizeof (T_frame_no));
504
505 /*
506 TRACE_EVENT_P5 ("RA %u CNF: %d %d %d 0x%02x",
507 rr_data->ms_data.access_counter,
508 mph_random_access_cnf->frame_no.t1,
509 mph_random_access_cnf->frame_no.t2,
510 mph_random_access_cnf->frame_no.t3,
511 rr_data->used_channel_ref[rr_data->ms_data.access_counter]);
512 */
513
514 /*
515 * increment the number of already sent messages
516 */
517 rr_data->ms_data.access_counter++;
518
519 if (rr_data->ms_data.access_counter EQ rr_data->ms_data.max_attempt)
520 {
521 /*
522 * T3126 and T3146 (GPRS Packet Access on CCCH) are
523 * the same so use them for both purposes
524 *
525 * if it is the last random burst, start T3126 if the timer is not
526 * running yet (can be started after reception of an immediate
527 * assignment reject message).
528 * The timer controls reception of an immediate assignment message
529 * as response to the random bursts.
530 */
531 /* Implements Measure#32: Row 196,197 */
532 (IS_TIMER_ACTIVE(T3126)) ?
533 TRACE_TIMER ( "T3126 re-start") : TRACE_TIMER ( "T3126 start");
534
535 if (! IS_TIMER_ACTIVE(T3126))
536 {
537 TIMERSTART (T3126, T3126_VALUE);
538 }
539
540 /*
541 * set a flag that all random bursts are send and confirmed.
542 */
543 rr_data->ms_data.all_conf_received = TRUE;
544 }
545 }
546
547
548 break;
549
550 default:
551 break;
552 }
553 PFREE (mph_random_access_cnf);
554 }
555
556 /*
557 +--------------------------------------------------------------------+
558 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
559 | STATE : code ROUTINE : dat_dl_release_cnf |
560 +--------------------------------------------------------------------+
561
562 PURPOSE : Layer 2 confirms with DL_RELEASE_CNF a disconnection on
563 layer 2 which has been initiated by RR.
564
565 */
566
567 GLOBAL void dat_dl_release_cnf (T_DL_RELEASE_CNF *dl_release_cnf)
568 {
569 GET_INSTANCE_DATA;
570 TRACE_FUNCTION ("dat_dl_release_cnf()");
571
572 switch (GET_STATE (STATE_DAT))
573 {
574 case DAT_CHAN_REL:
575 /*
576 * after reception of a channel release message RR has
577 * started disconnection to come from dedicated to idle
578 * mode. Stop T3110, which controls the disconnection in
579 * layer 2.
580 */
581 TIMERSTOP (T3110);
582 /*
583 * Send STOP_DEDICATED_REQUEST to L1 and wait for confirmation
584 */
585 att_stop_dedicated();
586 break;
587
588 #ifdef GPRS
589 case DAT_PDCH_ASS_2:
590 dat_rrgrr_resumed_tbf_cnf();
591 rr_data->gprs_data.tbf_est = TBF_EST_NONE; /* the initial state */
592 break;
593 #endif
594
595 case DAT_HANDOVER_4:
596 TRACE_EVENT ("Event: DAT_HANDOVER_4");
597 /*
598 * the layer 2 resumption on the new channel during handover
599 * has failed and RR switches back to the old channel.
600 */
601 dat_code_mph_old_chan_req ();
602 SET_STATE (STATE_DAT, DAT_HANDOVER_5);
603 break;
604
605 case DAT_CHAN_ASS_1:
606 /*
607 * resumption of layer 2 has failed after channel assignment
608 * go back to the old channel.
609 */
610 dat_code_mph_old_chan_req ();
611 SET_STATE (STATE_DAT, DAT_CHAN_ASS_2);
612 break;
613
614 case DAT_DEDICATED:
615 case DAT_CHAN_ASS:
616 case DAT_CHAN_ASS_2:
617 case DAT_HANDOVER_5:
618 TRACE_EVENT ("Event: DAT_DEDICATED, DAT_CHAN_ASS, DAT_CHAN_ASS_2 or DAT_HANDOVER_5");
619
620 if (dl_release_cnf->sapi EQ SAPI_3)
621 {
622 /*
623 * the connection for SAPI 3 is disconnected by the
624 * network.
625 */
626 SET_STATE (STATE_SAPI_3, SMS_IDLE);
627 dat_rr_release_ind(RRCS_DATA_LINK_FAIL, SAPI_3);
628
629 /*
630 * clear any stored SAPI 3 message
631 */
632 srv_clear_stored_prim (RR_DATA_REQ);
633 }
634 else
635 {
636 /*
637 * the reconnection to the old channel has failed
638 * or a lower layer failure had happen.
639 * Indicate the abort to MM and start cell reselection.
640 */
641 switch (GET_STATE (STATE_DAT))
642 {
643 case DAT_CHAN_ASS:
644 case DAT_CHAN_ASS_2:
645 TRACE_EVENT("Assignment failed: reconnect failed");
646 EM_ASS_FAILURE_RECONNECT_FAILED;
647 break;
648 case DAT_HANDOVER_5:
649 TRACE_EVENT("Handover failed: reconnect failed");
650 EM_HO_FAILURE_RECONNECT_FAILED;
651 break;
652 default:
653 break;
654 }
655
656 att_code_rr_abort_ind (RRCS_DATA_LINK_FAIL);
657
658 rr_data->net_lost = TRUE;
659 att_stop_dedicated();
660 }
661 break;
662
663 case DAT_IMM_ASS_1:
664 /*
665 * Layer 2 establishment has failed for immediate assignment
666 * Stop dedicated and go back to idle mode. MM will be informed about
667 * release after receiving MPH_STOP_DEDICATED_CNF from L1.
668 */
669 if (rr_data->ms_data.establish_cause NEQ ESTCS_PAGING)
670 {
671 rr_data->rel_cause = RRCS_DL_EST_FAIL;
672 }
673 att_stop_dedicated();
674 break;
675
676 default:
677 break;
678 }
679 PFREE (dl_release_cnf);
680 }
681
682 /*
683 +--------------------------------------------------------------------+
684 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
685 | STATE : code ROUTINE : dat_dl_release_ind |
686 +--------------------------------------------------------------------+
687
688 PURPOSE : Layer 2 indicates disconnection due to layer 2 problems.
689
690 */
691
692 GLOBAL void dat_dl_release_ind (T_DL_RELEASE_IND *dl_release_ind)
693 {
694 GET_INSTANCE_DATA;
695 TRACE_FUNCTION ("dat_dl_release_ind()");
696
697 switch (GET_STATE (STATE_DAT))
698 {
699 case DAT_CHAN_ASS:
700 case DAT_CHAN_ASS_2:
701 case DAT_DEDICATED:
702 case DAT_HANDOVER:
703 case DAT_HANDOVER_5:
704 TRACE_EVENT ("DL_RELEASE_IND");
705 if (dl_release_ind->sapi EQ SAPI_3)
706 {
707 /*
708 * indicate release for SAPI 3 (SMS)
709 * to MM and reset RR state back to SMS_IDLE.
710 */
711 dat_rr_release_ind(RRCS_DATA_LINK_FAIL, SAPI_3);
712 SET_STATE (STATE_SAPI_3, SMS_IDLE);
713 /*
714 * clear any stored SAPI 3 message
715 */
716 srv_clear_stored_prim (RR_DATA_REQ);
717 }
718 else
719 {
720 /*
721 * Delay 4 frames to allow sending UA response
722 * in RF for FTA testcase 25.2.3
723 * else the idle mode is configured too early.
724 * vsi_t_sleep (VSI_CALLER FOUR_FRAMES);
725 *
726 * msb: DL delays the release indication itself for completion of the
727 * UA response transmission.
728 */
729 EM_DL_RELEASE_IND;
730
731 /*
732 * Inform MM about the release and start cell reselection.
733 */
734 att_code_rr_abort_ind (RRCS_DATA_LINK_FAIL);
735
736 rr_data->net_lost = TRUE;
737 att_stop_dedicated();
738 }
739 break;
740
741 case DAT_CHAN_ASS_1:
742 /*
743 * resumption of layer 2 has failed after channel assignment
744 * go back to the old channel.
745 */
746 dat_code_mph_old_chan_req ();
747 SET_STATE (STATE_DAT, DAT_CHAN_ASS_2);
748
749 EM_ASS_FAILURE_RECONNECT_FAILED2
750 break;
751
752 case DAT_CHAN_REL:
753 /*
754 * after reception of a channel release message RR has
755 * started disconnection to come from dedicated to idle
756 * mode. Stop T3110, which controls the disconnection in
757 * layer 2.
758 */
759 TIMERSTOP (T3110);
760
761 /*
762 * Send STOP_DEDICATED_REQUEST to L1 and wait for confirmation
763 */
764 att_stop_dedicated();
765
766 EM_L2_CONNECTION_LOST;
767 break;
768
769 case DAT_HANDOVER_4:
770 TRACE_EVENT ("DL_RELEASE_IND");
771 /*
772 * resumption of layer 2 has failed handover
773 * go back to the old channel.
774 */
775 dat_code_mph_old_chan_req ();
776 SET_STATE (STATE_DAT, DAT_HANDOVER_5);
777
778 EM_HO_FAILURE_RECONNECT_FAILED2;
779
780
781 break;
782
783 case DAT_IMM_ASS_1:
784
785 /*
786 * layer 2 establishment has failed during immediate assignment
787 */
788 if (dl_release_ind->cs EQ DL_INFO_FIELD_MISMATCH AND
789 rr_data->sc_data.first_attempt)
790 {
791 /*
792 * if the reason is a mismatch in the layer 3 messages in SABM
793 * and the response UA, a second attempt of establishment is started.
794 */
795 rr_data->sc_data.first_attempt = FALSE;
796 rr_data->repeat_est = TRUE;
797 #ifdef GPRS
798 if (rr_data->ms_data.establish_cause EQ ESTCS_GPRS_PAGING)
799 rr_data->dcch_stop_cause = CONTENTION_RESOLUTION_FAIL;
800 #endif
801 }
802 else
803 {
804 switch (rr_data->ms_data.establish_cause)
805 {
806 #ifdef GPRS
807 case ESTCS_GPRS_PAGING:
808 rr_data->dcch_stop_cause = DL_ESTABLISHMENT_FAIL;
809 break;
810 case ESTCS_PAGING:
811 rr_data->rel_cause = RRCS_INT_NOT_PRESENT;
812 #else
813 case ESTCS_PAGING:
814 #endif
815 break;
816 default:
817 rr_data->rel_cause = RRCS_DL_EST_FAIL;
818 break;
819 }
820 }
821
822 /*
823 * Stop dedicated and go back to idle mode.
824 */
825 att_stop_dedicated();
826 break;
827
828 #ifdef GPRS
829 case DAT_PDCH_ASS_4:
830 case DAT_CCO_4:
831 if ( GET_STATE (STATE_DAT) EQ DAT_PDCH_ASS_4 OR
832 rr_data->gprs_data.cco_need_reconnect_cnf )
833 {
834 dat_rrgrr_reconnect_dcch_cnf (RECONN_LOW_FAIL);
835 }
836 att_build_idle_req (SC_INDEX, MODE_CELL_RESELECTION);
837 SET_STATE (STATE_DAT, DAT_IDLE);
838 break;
839 #endif
840
841 default:
842 break;
843 }
844 PFREE (dl_release_ind);
845 }
846
847 /*
848 +--------------------------------------------------------------------+
849 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
850 | STATE : code ROUTINE : dat_mph_dedicated_cnf |
851 +--------------------------------------------------------------------+
852
853 PURPOSE : Layer 1 confirms the configuration of a dedicated channel.
854
855 */
856
857 GLOBAL void dat_mph_dedicated_cnf (T_MPH_DEDICATED_CNF *mph_dedicated_cnf)
858 {
859 GET_INSTANCE_DATA;
860 TRACE_FUNCTION ("dat_mph_dedicated_cnf()");
861
862 switch (GET_STATE (STATE_DAT))
863 {
864 case DAT_IMM_ASS_1:
865 /*
866 * A dedicated channel has been configured after
867 * reception of the immediate assignment message.
868 *
869 * clear neighbourcell list and start layer 2 establishment
870 */
871 srv_clear_list (&rr_data->sc_data.cd.ncell_list);
872 srv_clear_list (&rr_data->sc_data.five_ter_list);
873 att_clean_buf (IND_ALL_DEDI_SI);
874 rr_data->sc_data.cd.sys_info_read &= ~ALL_DEDI_SYS_INFOS;
875 /*
876 * from now on we have a channel assigned
877 * even if the contention resolution is not
878 * done yet. If the contention resolution fails
879 * we use the same procedure for selecting a cell
880 * as in dedicated mode
881 */
882
883 rr_data->mode_after_dedi = MODE_CELL_SELECTION; /* default mode */
884 TIMERSTART (T_DEDICATED_MODE, THIRTY_SEC);
885 #ifdef GPRS
886 if(! dat_gprs_start_sabm())
887 #endif
888 dat_start_sabm ();
889 break;
890
891 case DAT_CHAN_ASS:
892
893 if (rr_data->dyn_config.fca)
894 {
895 /*
896 * special testfeature to force a failed layer 2 establishment
897 * during channel assignment. Reset flag and switch back to old
898 * channel.
899 */
900 rr_data->dyn_config.fca = 0;
901 dat_code_mph_old_chan_req ();
902 SET_STATE (STATE_DAT, DAT_CHAN_ASS_2);
903 }
904 else
905 {
906 /*
907 * Resume layer 2 connection on the new channel with
908 * an assignment complete message.
909 */
910 MCAST (assign_com, U_ASSIGN_COMP);
911 PALLOC_MSG ( dl_resume_req, DL_RESUME_REQ, U_ASSIGN_COMP);
912
913 SET_STATE (STATE_DAT, DAT_CHAN_ASS_1);
914 assign_com->msg_type = U_ASSIGN_COMP;
915 assign_com->rr_cause = RRC_NORMAL_EVENT;
916
917 /*
918 * set channel and sapi for the new channel description
919 */
920 dat_code_prr_channel (&dl_resume_req->ch_type,
921 &dl_resume_req->sapi,
922 rr_data->cr_data.chan_desc.chan_type);
923
924 /*
925 * start layer 2 resumption.
926 */
927 for_dat_resume_req (dl_resume_req);
928 EM_ASSIGNMENT_COMPLETE;
929 }
930 break;
931
932 #ifdef GPRS
933 case DAT_PDCH_ASS:
934 /*
935 * The current channel has been stopped at the Physical Layer.
936 */
937 dat_rrgrr_suspend_dcch_cnf();
938 SET_STATE (STATE_DAT, DAT_PDCH_ASS_1);
939 SET_STATE (STATE_GPRS, GPRS_PIM_BCCH); /* force MPH_IDLE_REQ with RRGRR_STOP_MON_CCCH_REQ */
940 rr_data->gprs_data.tbf_est = TBF_EST_PDCH;
941 break;
942 #endif
943
944 case DAT_HANDOVER:
945 {
946 /*
947 * clearing of neighbourcells is already done
948 * after reception of the handover command.
949 *
950 * following behaviour depends on the result of
951 * handover execution in layer 1.
952 */
953 switch (mph_dedicated_cnf->dedi_res)
954 {
955 case DEDI_RES_OK:
956 /*
957 * handover is successfull.
958 */
959 if (rr_data->dyn_config.fca)
960 {
961 /*
962 * special testfeature to simulate
963 * failed handover, reset flag
964 * and start reconnection.
965 */
966 rr_data->dyn_config.fca = 0;
967 dat_code_mph_old_chan_req ();
968 SET_STATE (STATE_DAT, DAT_HANDOVER_5);
969 }
970 else
971 {
972 /*
973 * build a handover complete message.
974 */
975 MCAST (handov_comp, U_HANDOV_COMP);
976 PALLOC_MSG (dl_resume, DL_RESUME_REQ, U_HANDOV_COMP);
977
978 if (rr_data->ms_data.ho_type.rot EQ TIME_DIFF_YES)
979 {
980 /*
981 * handover command has requested the observed time difference.
982 */
983 handov_comp->v_mob_time_diff = TRUE;
984 handov_comp->mob_time_diff.diff = rr_data->sc_data.observed_ta;
985 }
986 else
987 {
988 handov_comp->v_mob_time_diff = FALSE;
989 }
990
991 handov_comp->msg_type = U_HANDOV_COMP;
992 handov_comp->rr_cause = RRC_NORMAL_EVENT;
993
994 /*
995 * set channel type and sapi for the new channel
996 */
997 dat_code_prr_channel (&dl_resume->ch_type,
998 &dl_resume->sapi,
999 rr_data->cr_data.chan_desc.chan_type);
1000
1001 EM_HANDOVER_COMPLETE;
1002
1003 /*
1004 * start layer 2 resumption.
1005 */
1006 for_dat_resume_req (dl_resume);
1007 SET_STATE (STATE_DAT, DAT_HANDOVER_4);
1008 }
1009 break;
1010
1011 case DEDI_RES_TIMEOUT:
1012 /*
1013 * the timer T3124 during an asynchronous handover
1014 * has timed out, start reconnection.
1015 */
1016 dat_code_mph_old_chan_req ();
1017 SET_STATE (STATE_DAT, DAT_HANDOVER_5);
1018 break;
1019
1020 case DEDI_RES_CELL_NOT_SYNC :
1021 /*
1022 * Timing Info for this cell is not present in ALR.
1023 * This could be due to :
1024 * a) Cell not present in BA list,
1025 * b) Synchronization to this cell failed or not attempted.
1026 */
1027 case DEDI_RES_TA_OUT_OF_RANGE:
1028 {
1029 /*
1030 * Layer 1 has detected that the timing advance is out of range.
1031 * In fact the new channel has not been configured and RR
1032 * can start reconnection to the old layer 2 connection immediately.
1033 * It sends a handover failure message with the expected cause.
1034 */
1035 MCAST (handov_fail, U_HANDOV_FAIL);
1036 PALLOC_MSG (dl_reconnect_req, DL_RECONNECT_REQ, U_HANDOV_FAIL);
1037
1038 /*
1039 * set channel type and sapi for the old channel
1040 */
1041 dat_code_prr_channel (&dl_reconnect_req->ch_type,
1042 &dl_reconnect_req->sapi,
1043 rr_data->sc_data.chan_desc.chan_type);
1044 handov_fail->msg_type = U_HANDOV_FAIL;
1045
1046 if( mph_dedicated_cnf->dedi_res EQ DEDI_RES_TA_OUT_OF_RANGE)
1047 handov_fail->rr_cause = RRC_TIME_ADVANCE;
1048 else if ( mph_dedicated_cnf->dedi_res EQ DEDI_RES_CELL_NOT_SYNC)
1049 #if defined (REL99) && defined (FF_BHO)
1050 handov_fail->rr_cause = RRC_LOWER_LAYER_FAIL;
1051 #else
1052 handov_fail->rr_cause = RRC_CHAN_UNACCEPT;
1053 #endif
1054 RR_EM_SET_HANDOVER_FAIL_CAUSE(handov_fail->rr_cause);
1055
1056 /*
1057 * start reconnection of the layer 2 link on the old channel.
1058 */
1059 for_dat_reconnect_req (dl_reconnect_req);
1060 SET_STATE (STATE_DAT, DAT_HANDOVER_5);
1061
1062 break;
1063 }
1064 }
1065 break;
1066 }
1067
1068 default:
1069 break;
1070 }
1071 PFREE (mph_dedicated_cnf);
1072 }
1073
1074 /*
1075 +--------------------------------------------------------------------+
1076 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
1077 | STATE : code ROUTINE : dat_mph_dedicated_fail_cnf |
1078 +--------------------------------------------------------------------+
1079
1080 PURPOSE : Layer 1 confirms the re-configuration of the old channel
1081 after a failed handover or channel assignment with the
1082 primitive MPH_DEDICATED_FAIL_CNF.
1083
1084 */
1085
1086 GLOBAL void dat_mph_dedicated_fail_cnf (T_MPH_DEDICATED_FAIL_CNF *mph_dedicated_fail_cnf)
1087 {
1088 GET_INSTANCE_DATA;
1089 TRACE_FUNCTION ("dat_mph_dedicated_fail_cnf()");
1090
1091 switch (GET_STATE (STATE_DAT))
1092 {
1093 case DAT_CHAN_ASS_2:
1094 {
1095 /*
1096 * reconnection is done in layer 2. An assignment failure
1097 * message is send to the network.
1098 */
1099
1100 MCAST (assign_fail, U_ASSIGN_FAIL);
1101 PALLOC_MSG (dl_reconnect_req, DL_RECONNECT_REQ, U_ASSIGN_FAIL);
1102
1103 assign_fail->msg_type = U_ASSIGN_FAIL;
1104 assign_fail->rr_cause = RRC_PROT_UNSPECIFIED;
1105
1106 RR_EM_SET_ASSIGN_FAIL_CAUSE(assign_fail->rr_cause);
1107
1108 /*
1109 * set channel type and SAPI for layer 2
1110 */
1111 dat_code_prr_channel (&dl_reconnect_req->ch_type,
1112 &dl_reconnect_req->sapi,
1113 rr_data->sc_data.chan_desc.chan_type);
1114
1115 /*
1116 * start layer 2 reconnection
1117 */
1118 for_dat_reconnect_req (dl_reconnect_req);
1119
1120 break;
1121 }
1122
1123 case DAT_HANDOVER_5:
1124 {
1125 /*
1126 * reconnection is done in layer 2. A handover failure
1127 * message is send to the network.
1128 */
1129 MCAST (handov_fail, U_HANDOV_FAIL);
1130 PALLOC_MSG (dl_reconnect_req, DL_RECONNECT_REQ, U_HANDOV_FAIL);
1131
1132 /*
1133 * clear neighbourcell list
1134 */
1135 srv_clear_list (&rr_data->sc_data.cd.ncell_list);
1136 srv_clear_list (&rr_data->sc_data.five_ter_list);
1137 att_clean_buf (IND_ALL_DEDI_SI);
1138 rr_data->sc_data.cd.sys_info_read &= ~ALL_DEDI_SYS_INFOS;
1139 handov_fail->msg_type = U_HANDOV_FAIL;
1140 handov_fail->rr_cause = RRC_UNSPECIFIED;
1141
1142 RR_EM_SET_HANDOVER_FAIL_CAUSE(handov_fail->rr_cause);
1143
1144 /*
1145 * set channel type and SAPI for layer 2
1146 */
1147 dat_code_prr_channel (&dl_reconnect_req->ch_type,
1148 &dl_reconnect_req->sapi,
1149 rr_data->sc_data.chan_desc.chan_type);
1150
1151 /*
1152 * start layer 2 reconnection
1153 */
1154 for_dat_reconnect_req (dl_reconnect_req);
1155 break;
1156 }
1157
1158 #ifdef GPRS
1159 case DAT_PDCH_ASS_3:
1160 {
1161 MCAST (u_assign_fail, U_ASSIGN_FAIL);
1162 PALLOC_MSG (dl_reconnect_req, DL_RECONNECT_REQ, U_ASSIGN_FAIL);
1163
1164 /*
1165 * set channel type and SAPI
1166 */
1167 dat_code_prr_channel (&dl_reconnect_req->ch_type,
1168 &dl_reconnect_req->sapi,
1169 rr_data->sc_data.chan_desc.chan_type);
1170
1171 u_assign_fail->msg_type = U_ASSIGN_FAIL;
1172 u_assign_fail->rr_cause = rr_data->gprs_data.reconn_cause;
1173
1174 for_dat_reconnect_req (dl_reconnect_req);
1175
1176 SET_STATE (STATE_DAT, DAT_PDCH_ASS_4);
1177 break;
1178 }
1179
1180 case DAT_CCO_3:
1181 {
1182 MCAST (u_handov_fail, U_HANDOV_FAIL);
1183 PALLOC_MSG (dl_reconnect_req, DL_RECONNECT_REQ, U_HANDOV_FAIL);
1184
1185 /*
1186 * set channel type and SAPI
1187 */
1188 dat_code_prr_channel (&dl_reconnect_req->ch_type,
1189 &dl_reconnect_req->sapi,
1190 rr_data->sc_data.chan_desc.chan_type);
1191
1192 u_handov_fail->msg_type = U_HANDOV_FAIL;
1193 u_handov_fail->rr_cause = rr_data->gprs_data.reconn_cause;
1194
1195 for_dat_reconnect_req (dl_reconnect_req);
1196 SET_STATE (STATE_DAT, DAT_CCO_4);
1197 break;
1198 }
1199 #endif
1200
1201 default:
1202 break;
1203 }
1204 PFREE (mph_dedicated_fail_cnf);
1205 }
1206
1207 /*
1208 +--------------------------------------------------------------------+
1209 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
1210 | STATE : code ROUTINE : dat_rr_abort_req |
1211 +--------------------------------------------------------------------+
1212
1213 PURPOSE : MM aborts a connection due to several reasons (SIM remove,
1214 timeout, power off etc.).
1215
1216 */
1217
1218 GLOBAL void dat_rr_abort_req (T_RR_ABORT_REQ *rr_abort_req)
1219 {
1220 GET_INSTANCE_DATA;
1221 TRACE_FUNCTION ("dat_rr_abort_req()");
1222
1223 switch (GET_STATE (STATE_DAT))
1224 {
1225 case DAT_CHAN_ASS:
1226 case DAT_CHAN_ASS_1:
1227 case DAT_CHAN_ASS_2:
1228 case DAT_DEDICATED:
1229 case DAT_HANDOVER:
1230 case DAT_HANDOVER_4:
1231 case DAT_HANDOVER_5:
1232 if (rr_abort_req->abcs EQ ABCS_SIM_REM)
1233 {
1234 /*
1235 * in case of SIM remove the registration data
1236 * especially the mobile identities are cleared
1237 */
1238 att_clear_registration_data ();
1239 }
1240
1241 /*
1242 * the disconnection of the layer 2 link is started.
1243 */
1244 dat_disconnect_link (RRCS_MM_ABORTED);
1245 break;
1246
1247 case DAT_CHAN_REL:
1248 /*
1249 * RR has already started the layer 2 link disconnection.
1250 * Wait for T3110 timeout or DL disconnection and process
1251 * normal cell reselection.
1252 */
1253 if (rr_abort_req->abcs EQ ABCS_SIM_REM)
1254 {
1255 /*
1256 * in case of SIM remove the registration data
1257 * especially the mobile identities are cleared
1258 */
1259 att_clear_registration_data ();
1260 }
1261 break;
1262
1263 case DAT_IDLE:
1264 if (rr_abort_req->abcs EQ ABCS_SIM_REM)
1265 {
1266 /*
1267 * in case of SIM remove the registration data
1268 * especially the mobile identities are cleared
1269 * The idle mode is configured again to set a
1270 * faked BS_PA_MFRMS of 9 to slow down layer 1
1271 * and save power. A correct paging group is not
1272 * longer needed, because paging is not possible
1273 * in limited service.
1274 */
1275 att_clear_registration_data ();
1276 att_build_idle_req (SC_INDEX,
1277 MODE_SYS_INFO_CHANGE);
1278 #ifdef REL99
1279 att_config_cbch ();
1280 #else
1281 att_build_cbch ();
1282 #endif
1283 }
1284 break;
1285
1286 case DAT_IMM_ASS:
1287 case DAT_IMM_ASS_1:
1288 if (rr_abort_req->abcs EQ ABCS_SIM_REM)
1289 {
1290 /*
1291 * in case of SIM remove the registration data
1292 * especially the mobile identities are cleared
1293 */
1294 att_clear_registration_data ();
1295 }
1296
1297 /*
1298 * stop any timer related to connection establishment
1299 */
1300 TIMERSTOP (T3122);
1301 TIMERSTOP (T3126);
1302
1303 /*
1304 * set the release establishment cause. This will be used in
1305 * dat_release_connection() function
1306 */
1307 rr_data->rel_cause = RRCS_MM_ABORTED;
1308
1309 if(GET_STATE (STATE_DAT) EQ DAT_IMM_ASS)
1310 {
1311 dat_rr_release_ind(rr_data->rel_cause, SAPI_0);
1312 att_leave_dat_imm_ass();
1313 }
1314 else
1315 {
1316 /*
1317 * go back to idle mode.
1318 * inform GRR, and don't wait for CR_RSP
1319 */
1320 att_stop_dedicated();
1321 }
1322 break;
1323
1324 default:
1325 if (rr_abort_req->abcs EQ ABCS_SIM_REM)
1326 {
1327 /*
1328 * in case of SIM remove the registration data
1329 * especially the mobile identities are cleared
1330 */
1331 att_clear_registration_data ();
1332 }
1333 /*
1334 * clear any store establish requests if available
1335 * due to a timeout abort of the upper layer.
1336 */
1337 if (srv_check_stored_prim (RR_ESTABLISH_REQ))
1338 {
1339 /*
1340 * release previous establish request
1341 */
1342 dat_rr_release_ind(RRCS_MM_ABORTED, SAPI_0);
1343 srv_clear_stored_prim (RR_ESTABLISH_REQ);
1344 }
1345 break;
1346 }
1347
1348 PFREE (rr_abort_req);
1349 }
1350
1351 /*
1352 +--------------------------------------------------------------------+
1353 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
1354 | STATE : code ROUTINE : dat_rr_data_req |
1355 +--------------------------------------------------------------------+
1356
1357 PURPOSE : A layer 3 message of an upper layer shall be send.
1358
1359 */
1360
1361 GLOBAL void dat_rr_data_req (T_RR_DATA_REQ *rr_data_req)
1362 {
1363 GET_INSTANCE_DATA;
1364 UBYTE pd;
1365
1366 TRACE_FUNCTION ("dat_rr_data_req()");
1367
1368 /*
1369 * get the protocol discriminator of the message.
1370 */
1371 GET_PD (rr_data_req->sdu, pd);
1372
1373 if (pd EQ PD_SMS)
1374 {
1375 TRACE_EVENT ("SMS Message");
1376
1377 /*
1378 * A SMS must be send with SAPI 3. Therefore the
1379 * SAPI 3 connection must be established on layer 2.
1380 * The STATE_SAPI_3 variable in RR indicates whether
1381 * the connection is established or not. If not the
1382 * message is stored and the connection will be established.
1383 * A SAPI 3 connection is automatically released after
1384 * channel assignment, handover or SAPI 0 release.
1385 */
1386 switch (GET_STATE (STATE_SAPI_3))
1387 {
1388 case SMS_ESTABLISHED:
1389 {
1390 /*
1391 * SAPI 3 connection is available, then send the message
1392 * directly.
1393 */
1394 PPASS (rr_data_req, dl_data_req, DL_DATA_REQ);
1395
1396 /*
1397 * set channel type and SAPI for SMS message.
1398 */
1399 dat_code_prr_channel_sms (dl_data_req,
1400 rr_data->sc_data.chan_desc.chan_type);
1401 for_dat_l3_data_req (dl_data_req);
1402 break;
1403 }
1404
1405 case SMS_PENDING:
1406 /*
1407 * the establishment of SAPI 3 connection is still ongoing.
1408 * store the message until connection is ready.
1409 */
1410 if (!srv_store_prim ((T_PRIM *)D2P(rr_data_req)))
1411 {
1412 PFREE (rr_data_req);
1413 }
1414 break;
1415
1416 case SMS_IDLE:
1417 /*
1418 * the establishment of SAPI 3 connection is not available
1419 * store the message until connection is ready.
1420 */
1421 if (!srv_store_prim ((T_PRIM *)D2P(rr_data_req)))
1422 {
1423 PFREE (rr_data_req);
1424 }
1425 else
1426 {
1427 /*
1428 * Maximum size of the initial message is one frame (= 23 Bytes).
1429 */
1430 PALLOC_SDU (dl_establish_req, DL_ESTABLISH_REQ, MAX_L2_FRAME_SIZE * BITS_PER_BYTE);
1431 dat_code_prr_channel_sms ((T_DL_DATA_REQ *)dl_establish_req,
1432 rr_data->sc_data.chan_desc.chan_type);
1433
1434 SET_STATE (STATE_SAPI_3, SMS_PENDING);
1435 for_dat_est_req (dl_establish_req);
1436 }
1437 break;
1438 }
1439 }
1440 else
1441 {
1442 /*
1443 * it is a SAPI 0 message
1444 */
1445 PPASS (rr_data_req, dl_data_req, DL_DATA_REQ);
1446
1447 /*
1448 * set channel type and SAPI according the channel type.
1449 */
1450 dat_code_prr_channel (&dl_data_req->ch_type,
1451 &dl_data_req->sapi,
1452 rr_data->sc_data.chan_desc.chan_type);
1453
1454 /*
1455 * set N(S) for upper layer message and forward it to Layer 2.
1456 */
1457 dat_vsd_bit_set ((T_L3_SDU *)&dl_data_req->sdu, SET_ONLY);
1458 for_dat_l3_data_req (dl_data_req);
1459 }
1460 }
1461
1462 /*
1463 +--------------------------------------------------------------------+
1464 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
1465 | STATE : code ROUTINE : dat_rr_establish_req |
1466 +--------------------------------------------------------------------+
1467
1468 PURPOSE : A mobile originated connection is started.
1469
1470 */
1471
1472 GLOBAL void dat_rr_establish_req (T_RR_ESTABLISH_REQ *rr_establish_req)
1473 {
1474 GET_INSTANCE_DATA;
1475 TRACE_FUNCTION ("dat_rr_establish_req()");
1476
1477 switch (GET_STATE (STATE_DAT))
1478 {
1479 case DAT_NULL:
1480 /*
1481 * Data transfer process is in null state, that means
1482 * the MS has no service
1483 */
1484 if (!srv_store_prim ((T_PRIM *)D2P(rr_establish_req)))
1485 {
1486 /*
1487 * storing is not possible due to an overflow of the storage area
1488 * then reject the connection attempt.
1489 */
1490 dat_rr_release_ind(RRCS_QUEUE_FULL, SAPI_0);
1491 PFREE (rr_establish_req);
1492 }
1493 break;
1494
1495 case DAT_IDLE:
1496 if (IS_TIMER_ACTIVE(T3122) AND (rr_establish_req->estcs NEQ ESTCS_EMRG_CAL))
1497 {
1498 /*
1499 * all non-emergency calls are rejected if T3122 is running.
1500 * The timer has been started after reception of an immediate
1501 * assignment reject message.
1502 */
1503 dat_rr_release_ind(RRCS_T3122_RUNNING, SAPI_0);
1504 PFREE (rr_establish_req);
1505
1506 TRACE_EVENT ("imm ass delayed");
1507 }
1508 else
1509 {
1510 /*
1511 * If T3122 is not running the access to the network is checked.
1512 */
1513 if (dat_access_allowed (rr_establish_req->estcs))
1514 {
1515 if (rr_establish_req->estcs EQ ESTCS_SERV_REQ_BY_MM)
1516 {
1517 /*
1518 * if location updating is started, store fieldstrength
1519 * for an optimisation. RR indicates to MM fieldstrength jumps
1520 * over 6 dBm in the field, that means better chance to
1521 * perform a successfull location updating.
1522 */
1523 rr_data->lup_rxlev = rr_data->nc_data[SC_INDEX].rxlev;
1524 }
1525
1526 /*
1527 * store the piggy-backed layer 3 message for later use.
1528 */
1529 memcpy (&rr_data->ms_data.l3msg, &rr_establish_req->sdu,
1530 sizeof (T_L3_SDU));/*lint !e420 Apparent access beyond array for function*/
1531
1532 /*
1533 * Initialize the N(S) for upper layer messages.
1534 */
1535 dat_vsd_bit_set (&rr_data->ms_data.l3msg, SET_AND_RESET);
1536
1537 /*
1538 * Initialize some parameters and start immediate assignment.
1539 */
1540 rr_data->sc_data.first_attempt = TRUE;
1541 rr_data->repeat_est = FALSE;
1542 #ifdef GPRS
1543 dat_gprs_set_suspended();
1544 #endif
1545 dat_start_immediate_assign (rr_establish_req->estcs);
1546 PFREE (rr_establish_req);
1547 }
1548 else
1549 {
1550 /*
1551 * Access is not allowed and the rejection is signalled to MM.
1552 */
1553 dat_rr_release_ind(RRCS_ACCESS_BARRED, SAPI_0);
1554 PFREE (rr_establish_req);
1555
1556 TRACE_EVENT ("access barred");
1557 }
1558 }
1559 break;
1560
1561 case DAT_IMM_ASS:
1562 case DAT_IMM_ASS_1:
1563 case DAT_DEDICATED:
1564 {
1565 /*
1566 * collision of MO and MT calls. MT has higher priority than
1567 * MO calls.
1568 */
1569 dat_rr_release_ind(RRCS_MO_MT_COLL, SAPI_0);
1570 PFREE (rr_establish_req);
1571 break;
1572 }
1573
1574 default:
1575 PFREE (rr_establish_req);
1576 break;
1577 }
1578 }
1579
1580 /*
1581 +--------------------------------------------------------------------+
1582 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
1583 | STATE : code ROUTINE : dat_mph_paging_ind |
1584 +--------------------------------------------------------------------+
1585
1586 PURPOSE : Layer 1 has detected a paging for the mobile.
1587 RR starts the immediate assignment procedure.
1588
1589 */
1590
1591 GLOBAL void dat_mph_paging_ind (T_MPH_PAGING_IND *mph_paging_ind)
1592 {
1593 GET_INSTANCE_DATA;
1594 #ifdef GPRS
1595 UBYTE ret;
1596 #endif
1597 TRACE_FUNCTION ("dat_mph_paging_ind()");
1598
1599 EM_PAGING_IND;
1600
1601 /* check access control class before processing for paging */
1602 if (dat_access_allowed(ESTCS_PAGING) EQ FALSE)
1603 {
1604 PFREE (mph_paging_ind);
1605 TRACE_EVENT("Access ctrl class not allowed for responding to the page msg");
1606 return;
1607 }
1608
1609 switch (GET_STATE (STATE_DAT))
1610 {
1611 case DAT_NULL:
1612 /*
1613 * MS is not in idle mode, searching for cell
1614 */
1615 if (! IS_TIMER_ACTIVE(T3122) AND GET_STATE (STATE_ATT) NEQ ATT_NULL)
1616 {
1617 /*
1618 * paging is only excepted if T3122 is not running and there isn't
1619 * performed a RR_DEACTIVATE_REQ just before
1620 */
1621 if (rr_data->pag_rec EQ FALSE)
1622 {
1623 /*
1624 * store paging if no paging is stored until now.
1625 */
1626 if (!srv_store_prim ((T_PRIM *)D2P(mph_paging_ind)))
1627 {
1628 /*
1629 * storage is full
1630 */
1631 PFREE (mph_paging_ind);
1632 }
1633 else
1634 {
1635 /*
1636 * marker that paging has been received.
1637 */
1638 rr_data->pag_rec = TRUE;
1639 }
1640 return;
1641 }
1642 }
1643 break;
1644
1645 case DAT_IDLE:
1646 if (! IS_TIMER_ACTIVE(T3122))
1647 {
1648 if (rr_data->first_meas_received EQ FALSE)
1649 {
1650 /*
1651 * we are actually still in cell reselection
1652 * because we have not yet received a measurement
1653 * report. But we have to be in idle mode to make
1654 * measurements in the first place.
1655 */
1656
1657 if (srv_check_stored_prim (MPH_PAGING_IND))
1658 {
1659 /*
1660 * if already a paging is stored, ignore subsequent pagings
1661 */
1662 PFREE (mph_paging_ind);
1663 }
1664 else
1665 {
1666 /*
1667 * store paging until measurement receives
1668 */
1669 rr_data->pag_rec = TRUE;
1670 if (!srv_store_prim ((T_PRIM *)D2P(mph_paging_ind)))
1671 {
1672 /*
1673 * storage buffer is full
1674 */
1675 rr_data->pag_rec = FALSE;
1676 PFREE (mph_paging_ind);
1677 }
1678 }
1679 return;
1680 }
1681
1682 #ifdef GPRS
1683 ret = dat_check_packet_paging_ind(mph_paging_ind);
1684 if(ret EQ FALSE)
1685 {
1686 /*
1687 * we are suspended and it is not a packet paging
1688 */
1689 dat_begin_start_immediate_assign (mph_paging_ind->identity_type,
1690 mph_paging_ind->channel_needed);
1691 }
1692 else if(ret EQ TRUE)
1693 {
1694 /*
1695 * we are not suspended and it is not a packet paging
1696 * and GPRS is activate
1697 */
1698 dat_ask_paging_ind(mph_paging_ind);
1699 }
1700 /* ret EQ 2-> packet paging for GPRS, do nothing */
1701 #else /* GPRS */
1702 dat_begin_start_immediate_assign (mph_paging_ind->identity_type,
1703 mph_paging_ind->channel_needed);
1704 #endif /* GPRS */
1705 }
1706
1707 break;
1708 #ifdef GPRS
1709 case DAT_IMM_ASS:
1710 /* only PS pagings are received in this state */
1711 dat_ask_paging_ind_pa_only(mph_paging_ind);
1712 break;
1713 #endif
1714 default:
1715 break;
1716 }
1717 PFREE (mph_paging_ind);
1718 }
1719
1720 #if defined FF_EOTD
1721 /*
1722 +--------------------------------------------------------------------+
1723 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
1724 | STATE : code ROUTINE : dat_rrlc_meas_req |
1725 +--------------------------------------------------------------------+
1726
1727 PURPOSE : Process the primitive RRLC_MEAS_REQ received from LC.
1728 Start the LCS/EOTD postion measurement procedure.
1729
1730 */
1731
1732 GLOBAL void dat_rrlc_meas_req (T_RRLC_MEAS_REQ *rrlc_meas_req)
1733 {
1734 GET_INSTANCE_DATA;
1735 T_NC_DATA *sc;
1736 int i,n;
1737
1738 TRACE_FUNCTION ("dat_rrlc_meas_req()");
1739
1740 switch ( GET_STATE (STATE_DAT) )
1741 {
1742 case DAT_HANDOVER :
1743 case DAT_HANDOVER_4:
1744 case DAT_HANDOVER_5:
1745 {
1746 PALLOC (rrlc_error_ind, RRLC_ERROR_IND);
1747 rrlc_error_ind->cause = LCS_HANDOVER;
1748
1749 rr_data->eotd_req_id = NOT_PRESENT_16BIT;
1750
1751 PSENDX (LC, rrlc_error_ind);
1752
1753 PFREE(rrlc_meas_req);
1754 return;
1755 }
1756 default:
1757 break;
1758 }
1759
1760 /*
1761 * Check if the requested cell matches the serving cell.
1762 */
1763
1764 sc = &rr_data->nc_data[SC_INDEX];
1765
1766 if ( rrlc_meas_req->v_arfcn AND
1767 rrlc_meas_req-> arfcn NEQ sc->arfcn AND
1768 rrlc_meas_req->v_bsic AND
1769 rrlc_meas_req-> bsic NEQ sc->bsic )
1770 {
1771 PALLOC (rrlc_error_ind, RRLC_ERROR_IND);
1772 rrlc_error_ind->cause = LCS_WRONG_BTS;
1773 PSENDX (LC, rrlc_error_ind);
1774
1775 PFREE(rrlc_meas_req);
1776 return;
1777 }
1778
1779 /*
1780 * The requested cell matches the serving cell or
1781 * the requested cell was not specified.
1782 */
1783
1784 {
1785 PALLOC ( mph_ncell_pos_req, MPH_NCELL_POS_REQ );
1786
1787 rr_data->eotd_req_id = rrlc_meas_req->req_id;
1788
1789 n = rrlc_meas_req->v_assist_data ? rrlc_meas_req->c_assist_data : 0;
1790 mph_ncell_pos_req->c_ncell_eotd = n;
1791 mph_ncell_pos_req->req_id = rrlc_meas_req->req_id;
1792 for ( i = 0; i < n; ++i )
1793 mph_ncell_pos_req->ncell_eotd[i] = *(T_ncell_eotd*)&rrlc_meas_req->assist_data[i];
1794
1795 PSENDX ( PL, mph_ncell_pos_req );
1796 }
1797 PFREE(rrlc_meas_req);
1798 }
1799
1800 /*
1801 +--------------------------------------------------------------------+
1802 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
1803 | STATE : code ROUTINE : dat_rrrrlp_data_req |
1804 +--------------------------------------------------------------------+
1805
1806 PURPOSE : Process the primitive RRRRLP_DATA_REQ received from LC.
1807 Transmit a APDU according 3GPP TS 04.18, section 3.4.21.
1808
1809 */
1810
1811 GLOBAL void dat_rrrrlp_data_req (T_RRRRLP_DATA_REQ *rrrrlp_data_req_orig)
1812 {
1813 GET_INSTANCE_DATA;
1814
1815 UBYTE cr = rrrrlp_data_req_orig->cr;
1816 T_sdu *sdu = &rrrrlp_data_req_orig->sdu;
1817 UBYTE *buf = &sdu->buf[sdu->o_buf/BITS_PER_BYTE];
1818 USHORT len = BYTELEN(sdu->l_buf);
1819 USHORT num_seg = len / APDU_FULL_L2_FRAME; /* number of full segments */
1820 USHORT rem_seg = len % APDU_FULL_L2_FRAME; /* size of last segment */
1821 USHORT n_seg; /* total number of segments*/
1822 USHORT i;
1823 UBYTE flag;
1824
1825 PPASS(rrrrlp_data_req_orig, rrrrlp_data_req, RRRRLP_DATA_REQ);
1826
1827 TRACE_FUNCTION ("dat_rrrrlp_data_req()");
1828
1829 /* sdu->o_buf must be a multiple of BITS_PER_BYTE */
1830 TRACE_ASSERT ( sdu->o_buf % BITS_PER_BYTE EQ 0 );
1831
1832 /* compute the total number of segments (n_seg) */
1833
1834 if ( len EQ 0 )
1835 {
1836 PFREE(rrrrlp_data_req);
1837 return;
1838 }
1839
1840 n_seg = num_seg + ((rem_seg EQ 0) ? 0 : 1);
1841
1842 /* in a loop with DL_DATA_REQ send all APDU segments */
1843
1844 for ( i = 0; i < num_seg; ++i )
1845 {
1846 PALLOC_MSG ( dl_data_req, DL_DATA_REQ, B_APPLIC_INFO );
1847
1848 dat_code_prr_channel (&dl_data_req->ch_type,
1849 &dl_data_req->sapi,
1850 rr_data->sc_data.chan_desc.chan_type );
1851
1852 /* compute the APDU control flags */
1853
1854 if ( n_seg EQ 1 )
1855 {
1856 flag = (UBYTE)(FIRST_SEG | LAST_SEG | (cr << 2));
1857 }
1858 else
1859 {
1860 if ( i EQ 0 )
1861 {
1862 flag = FIRST_SEG | NOT_LAST_SEG;
1863 }
1864 else
1865 {
1866 if ( i EQ num_seg-1 AND rem_seg EQ 0 )
1867 flag = NOT_FIRST_SEG | LAST_SEG | (cr << 2);
1868 else
1869 flag = NOT_FIRST_SEG | NOT_LAST_SEG;
1870 }
1871 }
1872
1873 /* compile the APDU message and send it to DL */
1874
1875 dl_data_req->sdu.buf[0] = PD_RR_TI_0;
1876 dl_data_req->sdu.buf[1] = B_APPLIC_INFO;
1877 dl_data_req->sdu.buf[2] = (flag << 4 ) | RRLP_LCS;
1878 dl_data_req->sdu.buf[3] = APDU_FULL_L2_FRAME;
1879 memcpy ( &dl_data_req->sdu.buf[4], buf, APDU_FULL_L2_FRAME );
1880
1881 buf += APDU_FULL_L2_FRAME;
1882 dl_data_req->sdu.l_buf = (4 + APDU_FULL_L2_FRAME) * BITS_PER_BYTE;
1883 dl_data_req->sdu.o_buf = 0;
1884
1885 PSENDX ( DL, dl_data_req );
1886 }
1887
1888 /* send remaining APDU segment if its length > 0 */
1889
1890 if ( rem_seg > 0 )
1891 {
1892 PALLOC_MSG ( dl_data_req, DL_DATA_REQ, B_APPLIC_INFO );
1893
1894 dat_code_prr_channel (&dl_data_req->ch_type,
1895 &dl_data_req->sapi,
1896 rr_data->sc_data.chan_desc.chan_type );
1897
1898 /* compute the APDU control flags */
1899
1900 if ( n_seg EQ 1 )
1901 flag = FIRST_SEG | LAST_SEG | (cr << 2);
1902 else
1903 flag = NOT_FIRST_SEG | LAST_SEG | (cr << 2);
1904
1905 /* compile the APDU message and send it to DL */
1906
1907 dl_data_req->sdu.buf[0] = PD_RR_TI_0;
1908 dl_data_req->sdu.buf[1] = B_APPLIC_INFO;
1909 dl_data_req->sdu.buf[2] = (flag << 4 ) | RRLP_LCS;
1910 dl_data_req->sdu.buf[3] = (UBYTE)rem_seg;
1911 memcpy ( &dl_data_req->sdu.buf[4], buf, rem_seg );
1912
1913 dl_data_req->sdu.l_buf = (4 + rem_seg) * BITS_PER_BYTE;
1914 dl_data_req->sdu.o_buf = 0;
1915
1916 PSENDX ( DL, dl_data_req );
1917 }
1918
1919 /* release RRRRLP_DATA_REQ */
1920 PFREE(rrrrlp_data_req);
1921 #ifdef REL99
1922 /* Send RRLP procedure stop indication to MM*/
1923 {
1924 PALLOC (rr_rrlp_stop_ind, RR_RRLP_STOP_IND);
1925 PSENDX (MM, rr_rrlp_stop_ind);
1926 }
1927 #endif
1928 }
1929 #endif /* FF_EOTD */
1930
1931 /*
1932 +--------------------------------------------------------------------+
1933 | PROJECT : GSM-PS (6147) MODULE : RR_DAT |
1934 | STATE : code ROUTINE : att_mph_stop_dedicated_cnf |
1935 +--------------------------------------------------------------------+
1936
1937 PURPOSE : Process the primitive MPH_STOP_DEDICATED_CNF received from L1
1938 */
1939 GLOBAL void att_mph_stop_dedicated_cnf (T_MPH_STOP_DEDICATED_CNF * stop_cnf)
1940 {
1941 GET_INSTANCE_DATA;
1942 PFREE(stop_cnf);
1943 TRACE_FUNCTION ("att_mph_stop_dedicated_cnf()");
1944 /*
1945 * Dedicated mode activity can be stopped in 3 cases
1946 *
1947 * - normal case :- Dedicated mode actvity has been stopped cleanly, without any errors.
1948 * Either a cell selection or a cell reselection (to the same cell) will take
1949 * place, depending on the timer T_DEDICATED_MODE.
1950 *
1951 * - failure :- Dedicated mode actvity has been stopped because of a radio link failure or a
1952 * data link failure. In this case cell re-selection must be started immediately.
1953 *
1954 * - CCO :- This is Applicable after RR has received a network cell change order
1955 */
1956 switch(GET_STATE (STATE_ATT))
1957 {
1958 case ATT_NULL:
1959 case ATT_CS1:
1960 case ATT_CS2:
1961 break;
1962
1963 default:
1964 #ifdef GPRS
1965 if( rr_data->mode_after_dedi EQ MODE_CELL_CHANGE_ORDER)
1966 {
1967 PALLOC (mph_bsic_req, MPH_BSIC_REQ);
1968 mph_bsic_req->arfcn = rr_data->gprs_data.arfcn;
1969 SET_STATE (STATE_ATT, ATT_IDLE);
1970 SET_STATE (STATE_CELL_SEL, CS_CCO);
1971 rr_data->mode_after_dedi = NOT_PRESENT_8BIT;
1972 PSENDX( PL, mph_bsic_req);
1973 return;
1974 }
1975 #endif
1976 if(! rr_data->net_lost )
1977 {
1978 /* Send Release indication to MM and go back to IDLE state */
1979 dat_release_connection();
1980 }
1981 else
1982 {
1983 #ifdef GPRS
1984 att_start_cell_reselection_gprs (BACK_FROM_DEDICATED_RLF);
1985 #else
1986 att_start_cell_reselection (BACK_FROM_DEDICATED_RLF);
1987 #endif
1988 }
1989 break;
1990 }
1991 }
1992 #endif