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comparison src/g23m-gsm/rr/rr_cs.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 module defines the functions for Cell Selection
18 | capability of Radio Resource.
19 +-----------------------------------------------------------------------------
20 */
21
22 #ifndef RR_CS_C
23 #define RR_CS_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 "typedefs.h"
33 #include "pcm.h"
34 #include "pconst.cdg"
35 #include "mconst.cdg"
36 #include "message.h"
37 #include "ccdapi.h"
38 #include "vsi.h"
39 #include "custom.h"
40 #include "gsm.h"
41 #include "prim.h"
42 #include "cnf_rr.h"
43 #include "tok.h"
44 #include "rr.h"
45
46 /*==== EXPORT =====================================================*/
47
48 /*==== PRIVATE ====================================================*/
49 static void cs_remove_co_chan (USHORT arfcn, USHORT co_arfcn);
50 static void cs_remove_co_channels (USHORT arfcn);
51 static UBYTE cs_check_channel (USHORT arfcn);
52 static BOOL cs_sync_next_bsic (void);
53
54
55 /*==== VARIABLES ==================================================*/
56
57 EXTERN UBYTE test_house;
58
59 /*==== FUNCTIONS ==================================================*/
60
61 LOCAL void cs_add_current_network_to_found_list ();
62 LOCAL BOOL cs_check_black_list_criteria(U8 region, U16 arfcn, U8 rxlev);
63 LOCAL BOOL cs_is_in_black_list(U8 region, U16 arfcn);
64 LOCAL BOOL cs_is_in_white_list(U8 region, U16 arfcn);
65 LOCAL U8 cs_get_sync_fail_counter(U8 region, U16 arfcn);
66 LOCAL void cs_reset_sync_fail_counter(U8 region, U16 arfcn);
67 LOCAL void cs_inc_sync_fail_counter(U8 region, U16 arfcn);
68 LOCAL void cs_use_white_list_info(U8 num_of_chan);
69 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
70 LOCAL UBYTE cs_update_std_ffs (UBYTE new_std);
71 #else
72 LOCAL UBYTE get_band_index(USHORT arfcn);
73 #endif
74
75
76 /*
77 * -------------------------------------------------------------------
78 * Procedures
79 * -------------------------------------------------------------------
80 */
81
82 /*
83 * The cell selection process bases on attributes for each channel
84 * of the power campaign. This attributes are defined by a bitmap
85 *
86 * Bit 1 0 priority
87 * ---------------------------------
88 * 0 0 low priority
89 * 0 1 mid priority
90 * 1 0 high priority
91 * 1 1 reserved
92 *
93 * The selection of a cell for synchronisation depends on
94 * the priority and the fieldstrength. It will be the cell
95 * selected, which is not checked yet, has the highest
96 * priority and the highest fieldstrength.
97 *
98 * Bit 2 reserved
99 *
100 * Bit 3 checked flag
101 * ---------------------------------
102 * 0 cell is not checked
103 * 1 cell is checked
104 *
105 * The flag indicates whether a cell is already checked or not.
106 *
107 * Bit 4 detected flag
108 * ---------------------------------
109 * 0 bcch is not detected
110 * 1 bcch is checked
111 *
112 * The flag indicates whether a BCCH is detected or not.
113 *
114 * Bit 5 emergency cell flag
115 * ---------------------------------
116 * 0 emergency services possible
117 * 1 emergency services not possible
118 *
119 * The flag indicates whether emergency services are possible or not.
120 *
121 * Bit 6 low priority cell flag
122 * ---------------------------------
123 * 0 no low priority cell
124 * 1 low priority cell
125 *
126 * The flag indicates whether a cell has a low priority or not.
127 *
128 * Bit 8 BCCH info list flag
129 * ---------------------------------
130 * 0 not member of the BCCH info list
131 * 1 member of the BCCH info list
132 *
133 * The flag indicates whether a cell is member of the BCCH information list or not.
134 */
135
136 /*
137 +--------------------------------------------------------------------+
138 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
139 | STATE : code ROUTINE : cs_init_process |
140 +--------------------------------------------------------------------+
141
142 PURPOSE : Initialisation of the cell selection process.
143 Called from 'pei_init' exclusively and rr_deactivate.
144
145 */
146
147 GLOBAL void cs_init_process (void)
148 {
149 GET_INSTANCE_DATA;
150 TRACE_FUNCTION ("cs_init_process()");
151
152 /*
153 * set the state and clear all variables.
154 */
155 SET_STATE (STATE_CELL_SEL, CS_NULL);
156 memset (&rr_data->cs_data, 0, sizeof (&rr_data->cs_data));
157
158 rr_data->cs_data.arfcn_sc = NOT_PRESENT_16BIT;
159 rr_data->cs_data.arfcn_cr = NOT_PRESENT_16BIT;
160
161 /* CSI-LLD section:4.1.1.11 */
162 rr_data->cs_data.initial_plmn_search = INITIAL_PLMN_SEARCH_NOT_ACTIVE;
163
164 /* In all simulation testcases written prior to cell selection
165 * improvements feature, US_BIT and STD values were not set in
166 * the ARFCN field
167 */
168 #if !defined (_SIMULATION_)
169 rr_data->cs_data.region = NOT_PRESENT_8BIT;
170 #endif
171
172 rr_data->cs_data.white_list.last_sc_arfcn = NOT_PRESENT_16BIT;
173 rr_data->cs_data.white_list.region = NOT_PRESENT_8BIT;
174 TRACE_EVENT_P1("white_list_region %d", rr_data->cs_data.white_list.region);
175
176 rr_data->start_cell_reselection = TRUE;
177 TRACE_EVENT_P1("start_cell_reselection %d", rr_data->start_cell_reselection);
178
179 /* Dynamic configuration parameters */
180 rr_data->dyn_config.bl_cs_en = TRUE;
181 rr_data->dyn_config.tfast_cs_val = TFAST_CS_VALUE;
182 rr_data->dyn_config.tnormal_cs_val = TNORMAL_CS_VALUE;
183 rr_data->dyn_config.lim_ser_nps_delay= DELAY_NON_PAR_SEARCH_LIM_SER;
184
185 #if defined(_SIMULATION_FFS_)
186 rr_csf_ffs_init();
187 #endif
188 }
189
190 /*
191 +--------------------------------------------------------------------+
192 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
193 | STATE : code ROUTINE : cs_set_bcch_info |
194 +--------------------------------------------------------------------+
195
196 PURPOSE : The function merges bcch information from SIM to White list
197 database
198 CSI-LLD - 4.1.2.2.1
199 */
200
201 GLOBAL void cs_set_bcch_info (T_bcch_info * sim_bcch_info)
202 {
203 GET_INSTANCE_DATA;
204 T_LIST tmp_list;
205 BUF_neigh_cell_desc cd;
206
207 TRACE_FUNCTION ("cs_set_bcch_info()");
208
209 /* Check for availability of sim_bcch_info data */
210 if(cs_check_region(rr_data->cs_data.white_list.region) AND
211 (sim_bcch_info NEQ NULL))
212 {
213 if(sim_bcch_info->v_bcch)
214 {
215 /* Store the sim_bcch_info data to white_list structure */
216 memcpy(cd.b_neigh_cell_desc,sim_bcch_info->bcch,BA_BITMAP_SIZE);
217 cd.o_neigh_cell_desc = 0;
218 cd.l_neigh_cell_desc = NCELL_DESC_BIT_LEN;
219
220 /* Merge BCCH info into white list */
221 for_create_channel_list((T_f_range *)&cd,&tmp_list);
222 srv_merge_list(&rr_data->cs_data.white_list.list,&tmp_list);
223 }
224 }
225 }
226
227 /*
228 +--------------------------------------------------------------------+
229 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
230 | STATE : code ROUTINE : cs_clear_white_list |
231 +--------------------------------------------------------------------+
232
233 PURPOSE : The function clears the bcch information (neigbour cell
234 description) of sys info 2, 2bis and 2ter stored in RAM
235 and FFS.
236 CSI-LLD - 4.1.2.2.6
237 */
238
239 GLOBAL void cs_clear_white_list(U8 clr_bcch_info)
240 {
241 GET_INSTANCE_DATA;
242 TRACE_FUNCTION ("cs_clear_white_list()");
243
244 if (clr_bcch_info & CLR_WHITE_LIST_SIM)
245 {
246 dat_send_bcchinfo_mm (NULL);
247
248 TRACE_EVENT ("White List: SIM cleared");
249 }
250
251 if (clr_bcch_info & CLR_WHITE_LIST_RAM)
252 {
253 rr_data->cs_data.arfcn_sc = NOT_PRESENT_16BIT;
254 rr_data->cs_data.arfcn_cr = NOT_PRESENT_16BIT;
255
256 memset(&rr_data->cs_data.white_list, 0 , sizeof(T_CS_WHITE_LIST));
257
258 rr_data->cs_data.white_list.last_sc_arfcn = NOT_PRESENT_16BIT;
259 rr_data->cs_data.white_list.region = NOT_PRESENT_8BIT;
260
261 TRACE_EVENT ("White List: RAM cleared");
262 }
263
264 #if defined (_SIMULATION_FFS_)
265 if (clr_bcch_info & CLR_WHITE_LIST_FFS)
266 {
267 T_CS_WHITE_LIST white_list;
268 memset(&white_list,0,sizeof(T_CS_WHITE_LIST));
269
270 rr_data->cs_data.white_list.region = NOT_PRESENT_8BIT;
271 rr_data->cs_data.white_list.last_sc_arfcn = NOT_PRESENT_16BIT;
272
273 rr_csf_write_white_list(&white_list);
274
275 TRACE_EVENT ("White List: FFS cleared");
276 }
277 #endif /* _SIMULATION_FFS_ */
278 }
279
280
281 #if defined (_SIMULATION_FFS_)
282 /*
283 +--------------------------------------------------------------------+
284 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
285 | STATE : code ROUTINE : cs_store_white_list |
286 +--------------------------------------------------------------------+
287
288 PURPOSE : The function stores while list information to FFS.
289 CSI-LLD - 4.1.2.2.3
290 */
291
292 GLOBAL void cs_store_white_list (void)
293 {
294 GET_INSTANCE_DATA;
295 /* Store the white List to FFS */
296 rr_csf_write_white_list(&rr_data->cs_data.white_list);
297 }
298 #endif /*_SIMULATION_FFS_*/
299
300 /*
301 +--------------------------------------------------------------------+
302 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
303 | STATE : code ROUTINE : cs_use_white_list_info |
304 +--------------------------------------------------------------------+
305
306 PURPOSE : The function uses the stored white list information and
307 increases the priority of these channels.
308 CSI-LLD - 4.1.2.2.8
309 */
310
311 LOCAL void cs_use_white_list_info(U8 num_of_chan)
312 {
313 GET_INSTANCE_DATA;
314 U8 i, priority;
315
316 TRACE_FUNCTION ("cs_use_white_list_info()");
317
318 /* Boot Time: If white list is invalidated by the second activate_req,
319 * decrease priority of white list carriers in power_cnf
320 */
321 priority = (cs_check_region(rr_data->cs_data.white_list.region)) ?
322 CS_HIGH_PRIORITY : CS_LOW_PRIORITY ;
323
324 for (i=0;i<num_of_chan;i++)
325 {
326 /*
327 * Power cnf always contains White list carriers at the top
328 */
329 rr_data->cs_data.attributes [i] = priority;
330
331 TRACE_EVENT_P3 ("Whie List: change prio of [%d]%u to 0x%02x",
332 rr_data->cs_data.arfcn[i]&ARFCN_MASK,
333 i, rr_data->cs_data.attributes [i]);
334 }
335 }
336
337 /*
338 +--------------------------------------------------------------------+
339 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
340 | STATE : code ROUTINE : cs_set_all |
341 +--------------------------------------------------------------------+
342
343 PURPOSE : The function clears all attributes and all stored BCCH
344 information.
345
346 */
347
348 GLOBAL void cs_set_all (void)
349 {
350 GET_INSTANCE_DATA;
351 TRACE_FUNCTION ("cs_set_all()");
352
353 /*
354 * clear all attributes
355 */
356 memset (&rr_data->cs_data.attributes, 0, sizeof (rr_data->cs_data.attributes));
357 }
358
359 /*
360 +--------------------------------------------------------------------+
361 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
362 | STATE : code ROUTINE : cs_set_freq_band |
363 +--------------------------------------------------------------------+
364
365 PURPOSE : This function sets the frequency band bit mask.
366
367 */
368
369 GLOBAL UBYTE cs_get_freq_band (UBYTE pch_interrupt)
370 {
371 UBYTE freq_bands;
372
373 rr_csf_get_freq_bands (&freq_bands);
374
375 if (!pch_interrupt)
376 {/*
377 * Power measurements without PCH interruption => PLMN search
378 * ----------------------------------------------------------
379 * In this case we use the found and set value of 'std' for the frequency
380 * area to mask out not available frequencies from 'freq_bands'.
381 * Use only frequencies of the current area.
382 */
383 switch (std)
384 {
385 case STD_900:
386 freq_bands &= BAND_GSM_900;
387 break;
388 case STD_EGSM:
389 freq_bands &= BAND_E_GSM; /* BAND_GSM_900|BAND_E_GSM */
390 break;
391 case STD_1900:
392 freq_bands &= BAND_PCS_1900;
393 break;
394 case STD_1800:
395 freq_bands &= BAND_DCS_1800;
396 break;
397 case STD_DUAL:
398 freq_bands &= BAND_DUAL; /* BAND_GSM_900|BAND_DCS_1800 */
399 break;
400 case STD_DUAL_EGSM:
401 freq_bands &= BAND_DUAL_EXT; /* BAND_GSM_900|BAND_E_GSM|BAND_DCS_1800 */
402 break;
403 case STD_850:
404 freq_bands &= BAND_GSM_850;
405 break;
406 case STD_DUAL_US:
407 freq_bands &= BAND_DUAL_US; /* BAND_GSM_850|BAND_PCS_1900 */
408 break;
409 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
410 case STD_850_1800:
411 freq_bands &= BAND_850_1800; /* BAND_GSM_850|BAND_DCS_1800 */
412 break;
413 case STD_900_1900:
414 freq_bands &= BAND_900_1900; /* BAND_E_GSM|BAND_PCS_1900 */
415 break;
416 case STD_850_900_1800:
417 freq_bands &= BAND_850_900_1800; /* BAND_E_GSM|BAND_GSM_850|BAND_DCS_1800 */
418 break;
419 case STD_850_900_1900:
420 freq_bands &= BAND_850_900_1900; /* BAND_GSM_850|BAND_E_GSM|BAND_PCS_1900 */
421 break;
422 #endif
423 }
424 }
425 return freq_bands;
426 }
427
428 /*
429 +--------------------------------------------------------------------+
430 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
431 | STATE : code ROUTINE : get_band_index |
432 +--------------------------------------------------------------------+
433
434 PURPOSE : The function extracts the frequency band index from the given
435 'arfcn' parameter.
436 */
437
438 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
439 GLOBAL UBYTE cs_get_band_index (USHORT arfcn)
440 #else
441 GLOBAL UBYTE get_band_index (USHORT arfcn)
442 #endif
443 {
444 UBYTE local_std = STD_GET_FROM_ARFCN(arfcn);
445 UBYTE sc_band;
446
447 if(local_std EQ STD_NOT_PRESENT)
448 {
449 /* Parallel search case */
450 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
451 local_std = std;
452 #else
453 local_std = std_bands[std-1];
454 #endif
455 }
456
457 switch (local_std)
458 {
459 case STD_900:
460 sc_band = B_GSM_900;
461 break;
462
463 case STD_EGSM:
464 sc_band = B_E_GSM;
465 break;
466
467 case STD_1800:
468 sc_band = B_DCS_1800;
469 break;
470
471 case STD_1900:
472 sc_band = B_PCS_1900;
473 break;
474
475 case STD_850:
476 sc_band = B_GSM_850;
477 break;
478
479 case STD_DUAL:
480 if (arfcn >= LOW_CHANNEL_1800)
481 sc_band = B_DCS_1800;
482 else
483 sc_band = B_GSM_900;
484 break;
485
486 case STD_DUAL_EGSM:
487 if (arfcn >= LOW_CHANNEL_EGSM)
488 sc_band = B_E_GSM;
489 else if (arfcn >= LOW_CHANNEL_1800)
490 sc_band = B_DCS_1800;
491 else if (arfcn EQ CHANNEL_0)
492 sc_band = B_E_GSM;
493 else
494 sc_band = B_GSM_900;
495 break;
496
497 case STD_DUAL_US:
498 if (arfcn >= LOW_CHANNEL_1900)
499 sc_band = B_PCS_1900;
500 else
501 sc_band = B_GSM_850;
502 break;
503
504 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
505 case STD_850_1800:
506 if (arfcn >= LOW_CHANNEL_1800)
507 sc_band = B_DCS_1800;
508 else
509 sc_band = B_GSM_850;
510 break;
511
512 case STD_900_1900:
513 if (arfcn >= LOW_CHANNEL_EGSM)
514 sc_band = B_E_GSM;
515 else if (arfcn >= LOW_CHANNEL_1900)
516 sc_band = B_PCS_1900;
517 else if (arfcn EQ CHANNEL_0)
518 sc_band = B_E_GSM;
519 else
520 sc_band = B_GSM_900;
521 break;
522
523 case STD_850_900_1800:
524 if (arfcn >= LOW_CHANNEL_EGSM)
525 sc_band = B_E_GSM;
526 else if (arfcn >= LOW_CHANNEL_1800)
527 sc_band = B_DCS_1800;
528 else if (arfcn EQ CHANNEL_0)
529 sc_band = B_E_GSM;
530 else if (arfcn >= LOW_CHANNEL_850)
531 sc_band = B_GSM_850;
532 else
533 sc_band = B_GSM_900;
534 break;
535
536 case STD_850_900_1900:
537 if (arfcn >= LOW_CHANNEL_EGSM)
538 sc_band = B_E_GSM;
539 else if (arfcn >= LOW_CHANNEL_1900)
540 sc_band = B_PCS_1900;
541 else if (arfcn EQ CHANNEL_0)
542 sc_band = B_E_GSM;
543 else if (arfcn >= LOW_CHANNEL_850)
544 sc_band = B_GSM_850;
545 else
546 sc_band = B_GSM_900;
547 break;
548 #endif
549
550 default:
551 sc_band = MAX_NUM_BANDS;
552 break;
553 }
554 /* this trace causes a lot of trace load; switch on only if needed
555 TRACE_EVENT_P3 (" [%u] std=%02x, sc_band=%02x", arfcn&ARFCN_MASK, local_std, sc_band);
556 */
557 return sc_band;
558 }
559
560 /*
561 +--------------------------------------------------------------------+
562 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
563 | STATE : code ROUTINE : cs_start_scan |
564 +--------------------------------------------------------------------+
565
566 PURPOSE : This function starts the scanning. The power measurements
567 are triggered. Power measurements means that layer 1
568 performs fieldstrength measurements on all carriers and
569 sends a list of the best to RR back for FB/SB scanning and
570 BCCH reading. There are two variants: with or without
571 paging channel (PCH) interruption. If RR is already in
572 idle mode, scanning without PCH interruption is performed,
573 that means the MS is pageable during that time.
574
575 */
576
577 GLOBAL void cs_start_scan ()
578 {
579 GET_INSTANCE_DATA;
580 U16 arfcn;
581 U8 i=0;
582 U8 region;
583 PALLOC (mph_power_req, MPH_POWER_REQ);/* T_MPH_POWER_REQ */
584
585 TRACE_FUNCTION ("cs_start_scan()");
586
587 memset(mph_power_req,0,sizeof(T_MPH_POWER_REQ ));
588
589 TIMERSTOP (TREG);
590 rr_data->cs_data.act_index = NOT_PRESENT_8BIT;
591
592 switch (GET_STATE (STATE_CELL_SEL))
593 {
594 case CS_NULL:
595 case CS_NULL_ACTIVE:
596 /*
597 * start power measurements with PCH interruption
598 */
599 mph_power_req->pch_interrupt = PCH_INTERRUPT;
600 rr_data->first_meas_received = FALSE;
601 rr_data->resel_pending = FALSE;
602 rr_data->c_ncell_bcch = NOT_INITIALISED;
603 rr_data->cs_data.all_freq_area = FALSE;
604 /* In all simulation testcases written prior to cell selection
605 * improvements feature, US_BIT and STD values were not set in
606 * the ARFCN field
607 */
608 #if !defined (_SIMULATION_)
609 rr_data->cs_data.region = NOT_PRESENT_8BIT;
610 #endif
611
612 dat_att_null ();
613 SET_STATE (STATE_CELL_SEL, CS_NULL_ACTIVE);
614
615 /* stop possibly parallel search and allow start of cell reselection */
616 att_notify_stop_plmn_search (FALSE);
617 break;
618
619 case CS_IDLE:
620 case CS_IDLE_ACTIVE:
621 /*
622 * start power measurements without PCH interruption.
623 */
624 mph_power_req->pch_interrupt = NO_PCH_INTERRUPT;
625 SET_STATE (STATE_CELL_SEL, CS_IDLE_ACTIVE);
626
627 /* indicate suspend state of nc monitoring in lower layer */
628 rr_data->start_cell_reselection = FALSE;
629 TRACE_EVENT_P1("start_cell_reselection %d", rr_data->start_cell_reselection);
630 break;
631
632 default:
633 break;
634 }
635
636 #ifndef TI_PS_FF_QUAD_BAND_SUPPORT
637 mph_power_req->freq_bands = cs_get_freq_band (mph_power_req->pch_interrupt);
638 #endif
639
640 /* CSI-LLD : 4.1.3.4.1.4 */
641 /* Set the new search mode */
642 mph_power_req->search_mode = CS_GET_CURRENT_SEARCH_MODE;
643
644 /* Set Lower Rxlev threshold */
645 memcpy( mph_power_req->lower_rxlevel_threshold, rr_data->dyn_config.lower_rxlev_thr, MAX_NUM_BANDS*sizeof(UBYTE));
646
647 /* Copy the black list information */
648 for(i=0;i<MAX_REGIONS;i++)
649 {
650 srv_copy_list ((T_LIST *)&mph_power_req->black_list.list[i],
651 &rr_data->cs_data.black_list.list[i],sizeof(T_LIST));
652 }
653
654 /* In case of Black List search, include "grey" carriers also
655 * in the Black list while sending to ALR
656 */
657 if(CS_GET_CURRENT_SEARCH_MODE EQ BLACK_LIST_SEARCH_MODE)
658 {
659 TRACE_EVENT(" Black_List_Search_Started");
660
661 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
662 mph_power_req->freq_bands = cs_get_freq_band (FALSE);
663 #endif
664
665 region = rr_data->cs_data.region;
666
667 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
668 if (region EQ BOTH_REGIONS)
669 {
670 for (i=0; i<MAX_REGIONS; i++)
671 {
672 for(arfcn=CHANNEL_0;arfcn<CHANNEL_0_INTERNAL;arfcn++)
673 {
674 /* Since Black List search is always a parallel search, "grey" carriers
675 * belonging to the current region only have to be added
676 */
677 if(cs_get_sync_fail_counter(i,arfcn))
678 srv_set_channel((T_LIST*)&mph_power_req->black_list.list[i],arfcn);
679 }
680 }
681 }
682 else
683 {
684 #endif
685 for(arfcn=CHANNEL_0;arfcn<CHANNEL_0_INTERNAL;arfcn++)
686 {
687 /* Since Black List search is always a parallel search, "grey" carriers
688 * belonging to the current region only have to be added
689 */
690 if(cs_get_sync_fail_counter(region,arfcn))
691 srv_set_channel((T_LIST*)&mph_power_req->black_list.list[region],arfcn);
692 }
693 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
694 }
695 #endif
696 }
697 else
698 {
699 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
700 mph_power_req->freq_bands = cs_get_freq_band (TRUE);
701 #endif
702
703 TRACE_EVENT_P9 ( "White List:[%d]Reg,[%d]Arfcn, MCC/MNC r=%x%x%x/%x%x%x/%d",
704 rr_data->cs_data.white_list.region,
705 rr_data->cs_data.white_list.last_sc_arfcn,
706 rr_data->cs_data.white_list.last_sc_lac.mcc[0],
707 rr_data->cs_data.white_list.last_sc_lac.mcc[1],
708 rr_data->cs_data.white_list.last_sc_lac.mcc[2],
709 rr_data->cs_data.white_list.last_sc_lac.mnc[0],
710 rr_data->cs_data.white_list.last_sc_lac.mnc[1],
711 rr_data->cs_data.white_list.last_sc_lac.mnc[2],
712 rr_data->cs_data.white_list.last_sc_lac.lac);
713
714 /* Copy white list information
715 * White list cannot be used, when the region it belongs to, is not known
716 * or its PLMN ID does not match with the requested PLMN
717 */
718 if((!cs_check_region(rr_data->cs_data.white_list.region)) OR
719 ((rr_data->ms_data.req_mm_service NEQ FUNC_PLMN_SRCH) AND
720 (GET_STATE(STATE_ATT) NEQ ATT_CS_INIT)) OR
721 ((rr_data->ms_data.req_mm_service EQ FUNC_PLMN_SRCH) AND
722 (!dat_plmn_equal_req(rr_data->cs_data.white_list.last_sc_lac.mcc,
723 rr_data->cs_data.white_list.last_sc_lac.mnc,
724 rr_data->ms_data.plmn.mcc,
725 rr_data->ms_data.plmn.mnc))))
726 {
727 TRACE_EVENT("White List is not used");
728 }
729 else
730 {
731 /* Copy the white list information */
732 srv_copy_list((T_LIST*)&mph_power_req->white_list.list,
733 &rr_data->cs_data.white_list.list,sizeof (T_LIST));
734
735 /* Set the region */
736 mph_power_req->white_list.region = rr_data->cs_data.white_list.region;
737
738 /* White list is valid */
739 mph_power_req->white_list.white_list_valid = TRUE;
740
741 }
742 }
743
744 /* Handle the search mode timers based on the new search mode */
745 cs_handle_search_mode_timer(CS_GET_CURRENT_SEARCH_MODE);
746
747 /*
748 * reset the time for net search to finish
749 * a PLMN available search during 35 seconds.
750 */
751 if( rr_data->ms_data.req_mm_service EQ FUNC_NET_SRCH_BY_MMI)
752 TIMERSTART(T_PLMN_SEARCH, T_PLMN_SEARCH_VALUE);
753
754 /*
755 * start power measurements in layer 1.
756 */
757 TRACE_EVENT_P2 ("cs_start_scan(): freq_bands=%02x Search Mode = %d",
758 mph_power_req->freq_bands,mph_power_req->search_mode);
759
760 PSENDX (PL, mph_power_req);
761 }
762
763 /*
764 +--------------------------------------------------------------------+
765 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
766 | STATE : code ROUTINE : cs_start_sync |
767 +--------------------------------------------------------------------+
768
769 PURPOSE : Start the synchronisation to FB/SB without power measurements.
770 Synchronisation to the frequency correction burst (FB) followed
771 by a synchronisation to the synchron burst (SB) is carried
772 out by layer 1. It means that the MS is synchronised to the
773 base station and then able to read the BCCH to check the cell.
774
775 */
776
777 GLOBAL void cs_start_sync (void)
778 {
779 GET_INSTANCE_DATA;
780 UBYTE i;
781
782 TRACE_FUNCTION ("cs_start_sync()");
783
784 /* While scanning for limited service, we scan all carriers */
785 if((CS_GET_PREVIOUS_SEARCH_MODE NEQ FAST_SEARCH_MODE) AND
786 (rr_data->cs_data.scan_mode EQ CS_SECOND_SCAN))
787 {
788 for (i=0;i<rr_data->cs_data.max_arfcn;i++)
789 /*
790 * reset check bit for all channels
791 */
792 rr_data->cs_data.attributes[i] &= CS_NON_CHECKED_BITS;
793 }
794
795 if (cs_sync_next_bsic () EQ FALSE)
796 {
797 /*
798 * indicate the end of scanning to attachment process
799 */
800 TIMERSTOP(T_PLMN_SEARCH);
801 att_no_bsic_ind ();
802 }
803 else
804 {
805 /*
806 * Another FB/SB scan is requested
807 */
808 SET_STATE (STATE_CELL_SEL, CS_IDLE_ACTIVE);
809 }
810 }
811
812
813 /*
814 +--------------------------------------------------------------------+
815 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
816 | STATE : code ROUTINE : cs_del_list |
817 +--------------------------------------------------------------------+
818
819 PURPOSE : A list of carriers (neighbourcell list) is used to speed up
820 the cell selection process. All members of the list and the
821 list of the power campaign are set to low priority.
822
823 */
824
825 GLOBAL void cs_del_list (T_LIST *list)
826 {
827 GET_INSTANCE_DATA;
828 UBYTE i;
829
830 TRACE_FUNCTION ("cs_del_list()");
831
832 /*
833 * for all cells of the power campaign list
834 */
835
836 for (i=0;i<rr_data->cs_data.max_arfcn;i++)
837 {
838 /*
839 * if they are member of the given list and not just checked
840 */
841 if (srv_get_channel (list, (USHORT)(rr_data->cs_data.arfcn[i]&ARFCN_MASK)) AND
842 rr_data->cs_data.act_index NEQ i)
843 {
844 /*
845 * set to low priority
846 */
847 rr_data->cs_data.attributes [i] &= CS_SET_TO_LOW_PRIORITY;
848 /*TRACE_EVENT_P1("[%u] del from list",rr_data->cs_data.arfcn[i]);*/
849 }
850 }
851 }
852
853 /*
854 +--------------------------------------------------------------------+
855 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
856 | STATE : code ROUTINE : cs_set_list |
857 +--------------------------------------------------------------------+
858
859 PURPOSE : A list of carriers (neighbourcell list) is used to speed up
860 the cell selection process. All members of the list and the
861 list of the power campaign are set to high priority.
862
863
864 */
865
866 GLOBAL void cs_set_list (T_LIST *list)
867 {
868 GET_INSTANCE_DATA;
869 UBYTE i;
870
871 TRACE_FUNCTION ("cs_set_list()");
872
873 /*
874 * Not in the test house
875 */
876 if (rr_data->cell_test_operation OR
877 dat_test_sim_available ())
878 return;
879
880 /*
881 * for all channels in the power campaign list
882 */
883 for (i=0;i<rr_data->cs_data.max_arfcn;i++)
884 {
885 /*
886 * if they are also member of the given list
887 */
888 if (srv_get_channel (list, (USHORT)(rr_data->cs_data.arfcn[i]&ARFCN_MASK)))
889 {
890 /*
891 * set to high priority
892 */
893 rr_data->cs_data.attributes [i] &= CS_SET_TO_LOW_PRIORITY;
894 rr_data->cs_data.attributes [i] += CS_HIGH_PRIORITY;
895 }
896 }
897 }
898
899 /*
900 +--------------------------------------------------------------------+
901 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
902 | STATE : code ROUTINE : cs_def_list |
903 +--------------------------------------------------------------------+
904
905 PURPOSE : Checks whether a member of the list has the requested
906 attributes (e.g. emergency or low priority cell)
907
908 */
909
910 GLOBAL UBYTE cs_def_list (UBYTE attribute)
911 {
912 GET_INSTANCE_DATA;
913 UBYTE i;
914 UBYTE result = FALSE;
915
916 TRACE_FUNCTION ("cs_def_list()");
917
918 /*
919 * for all channels of the power campaign list
920 */
921 for (i=0;i<rr_data->cs_data.max_arfcn;i++)
922 {
923
924 /*
925 * check only cells which have high/mid priority
926 */
927 if ((rr_data->cs_data.attributes [i] & CS_CHECK_FLAG) EQ 0 AND
928 (rr_data->cs_data.attributes [i] & CS_PRIORITY) NEQ 0)
929 /*
930 * channel is not checked yet, so it is possible that
931 * the channel has this attribute
932 */
933 {
934 rr_data->cs_data.attributes [i] = CS_MID_PRIORITY;
935 result = TRUE;
936 }
937
938 /*
939 * check the attribute of the cell. If an attribute
940 * like emergency or low priority cell is set, the channel
941 * has been checked.
942 */
943 if (rr_data->cs_data.attributes[i] & attribute)
944 {
945 /*
946 * channel has this attribute, then set priority to high
947 */
948 rr_data->cs_data.attributes [i] &= CS_SET_TO_LOW_PRIORITY;
949 rr_data->cs_data.attributes [i] += CS_HIGH_PRIORITY;
950
951 /* reset check bit for this channel */
952 rr_data->cs_data.attributes[i] &= CS_NON_CHECKED_BITS;
953 result = TRUE;
954 }
955 }
956
957 return result;
958 }
959
960 /*
961 +--------------------------------------------------------------------+
962 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
963 | STATE : code ROUTINE : cs_sync_next |
964 +--------------------------------------------------------------------+
965
966 PURPOSE : The function starts the next FB/SB synchronisation request.
967 It selects the channel with the highest priority and field-
968 strength which is not checked yet.
969
970 */
971
972 GLOBAL BOOL cs_sync_next (void)
973 {
974 GET_INSTANCE_DATA;
975 TRACE_FUNCTION ("cs_sync_next()");
976
977 /*
978 * no further channel is possible
979 */
980 if (cs_sync_next_bsic () EQ FALSE)
981 {
982 /*
983 * stop any timer which controls cell selection
984 */
985 TIMERSTOP (T_RESELECT);
986 SET_STATE (STATE_CELL_SEL, CS_IDLE);
987
988 /*
989 * indicate end of search to attachment process
990 */
991 TIMERSTOP(T_PLMN_SEARCH);
992 att_no_bsic_ind ();
993
994 return FALSE;
995 }
996
997 return TRUE;
998 }
999
1000 /*
1001 +--------------------------------------------------------------------+
1002 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1003 | STATE : code ROUTINE : cs_sync_next_bsic |
1004 +--------------------------------------------------------------------+
1005
1006 PURPOSE : The function looks for the next candidate for a FB/SB
1007 sync request. The channel is not checked yet, has the
1008 highest priority and the highest fieldstrength.
1009 Return TRUE if another MPH_BSIC_REQ is sent.
1010 */
1011
1012 static BOOL cs_sync_next_bsic (void)
1013 {
1014 GET_INSTANCE_DATA;
1015 UBYTE i;
1016 UBYTE x = NOT_PRESENT_8BIT;
1017
1018 TRACE_FUNCTION ("cs_sync_next_bsic()");
1019
1020 /*
1021 * try to use 'found channel' from previous cell selection
1022 */
1023
1024 if( rr_data->found_channel NEQ NOT_PRESENT_16BIT )
1025 {
1026 for ( i = 0; i < rr_data->cs_data.max_arfcn; i++ )
1027 {
1028 if ( ((rr_data->cs_data.arfcn[i] & ARFCN_MASK) EQ
1029 (rr_data->found_channel & ARFCN_MASK)) AND
1030 ((rr_data->cs_data.arfcn[i] & US_BIT) EQ
1031 (rr_data->found_channel & US_BIT)) AND
1032 (rr_data->cs_data.attributes[i] & CS_CHECK_FLAG) EQ 0)
1033 {
1034 TRACE_EVENT ( "rr_found_channel in CS_DATA" );
1035 rr_data->found_channel = NOT_PRESENT_16BIT;
1036 x = i;
1037 break;
1038 }
1039 }
1040 }
1041
1042 /*
1043 * for all channels of the power campaign list
1044 */
1045 if ( x EQ NOT_PRESENT_8BIT )
1046 {
1047 for ( i=0; i < rr_data->cs_data.max_arfcn; i++ )
1048 {
1049 if ((rr_data->cs_data.attributes[i] & CS_CHECK_FLAG) EQ 0)
1050 {
1051 /*
1052 * channel is not checked yet
1053 */
1054 if (x EQ NOT_PRESENT_8BIT)
1055 {
1056 /*
1057 * first channel which is not checked yet
1058 */
1059 x = i;
1060
1061 /* High priority cell. Start sync */
1062 if((rr_data->cs_data.attributes[i] & CS_PRIORITY) EQ CS_HIGH_PRIORITY)
1063 break;
1064 }
1065 else
1066 {
1067 if ((rr_data->cs_data.attributes[i] & CS_PRIORITY) >
1068 (rr_data->cs_data.attributes[x] & CS_PRIORITY))
1069 {
1070 /*
1071 * new channel has higher priority
1072 */
1073 x = i;
1074 }
1075 }
1076 } /* CS_CHECK FLAG */
1077 } /* i < max_arfcn */
1078 } /* x NEQ NOT_PRESENT_8BIT */
1079
1080 if (x NEQ NOT_PRESENT_8BIT)
1081 {
1082 rr_data->cs_data.act_index = x;
1083
1084 if ((rr_data->ms_data.rr_service NEQ NO_SERVICE) AND
1085 (rr_data->cs_data.arfcn[x] EQ rr_data->nc_data[SC_INDEX].arfcn))
1086 {
1087 /*
1088 * Synchronization request for serving cell.
1089 * No need to send MPH_BSIC_REQ as we are already synchronized to
1090 * serving cell, instead fake MPH_BSIC_CNF.
1091 */
1092 PALLOC (mph_bsic_cnf, MPH_BSIC_CNF); /* T_MPH_BSIC_CNF */
1093 mph_bsic_cnf->arfcn = rr_data->cs_data.arfcn[x];
1094 mph_bsic_cnf->bsic = rr_data->nc_data[SC_INDEX].bsic;
1095 mph_bsic_cnf->cs = CS_NO_ERROR;
1096 if (srv_store_prim ((T_PRIM *)D2P(mph_bsic_cnf)))
1097 {
1098 TRACE_EVENT ("Shortcut for sync to SC taken");
1099 USE_STORED_ENTRIES();
1100 return TRUE;
1101 }
1102 else
1103 {
1104 /* In the unlikely event that we could not store the primitive */
1105 PFREE (mph_bsic_cnf);
1106 }
1107 }
1108 else
1109 {
1110
1111 /*
1112 *start BSIC Reading;For fast search, the first scan is only on reasonably strong carriers.i.e carrires with rxlev>MEDIUM_RXLEV_THRESHOLD
1113 *This is as per the cell selection improvements document. Hence dont send BSIC request on white listed low power carrires for first scan.
1114 *(OMAPS00109145)*/
1115 if( (rr_data->cs_data.previous_search_mode EQ FAST_SEARCH_MODE) AND (rr_data->cs_data.scan_mode NEQ CS_SECOND_SCAN) AND ( rr_data->cs_data.rxlev[x]<MEDIUM_RXLEV_THRESHOLD))
1116 return FALSE;
1117 else
1118 {
1119 PALLOC (mph_bsic_req, MPH_BSIC_REQ);
1120
1121 mph_bsic_req->arfcn = rr_data->cs_data.arfcn[x];
1122
1123 TRACE_EVENT_P3 ("BSIC REQ[%u]%u a=0x%x",
1124 rr_data->cs_data.arfcn[x] & ARFCN_MASK,
1125 x, rr_data->cs_data.attributes[x]);
1126
1127 PSENDX (PL, mph_bsic_req);
1128 }
1129 return TRUE;
1130 }
1131 }
1132 else
1133 return FALSE;
1134 }
1135
1136 /*
1137 +--------------------------------------------------------------------+
1138 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1139 | STATE : code ROUTINE : cs_set_null |
1140 +--------------------------------------------------------------------+
1141
1142 PURPOSE : Initialize the cell selection process.
1143
1144 */
1145
1146 GLOBAL void cs_set_null (void)
1147 {
1148 GET_INSTANCE_DATA;
1149 TRACE_FUNCTION ("cs_set_null()");
1150
1151 SET_STATE (STATE_CELL_SEL, CS_NULL);
1152 }
1153
1154 /*
1155 +--------------------------------------------------------------------+
1156 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1157 | STATE : code ROUTINE : cs_set_stop_active |
1158 +--------------------------------------------------------------------+
1159
1160 PURPOSE : The function resets the state of the cell selection
1161 process to an non-active state.
1162
1163 */
1164
1165 GLOBAL void cs_set_stop_active (void)
1166 {
1167 GET_INSTANCE_DATA;
1168 TRACE_FUNCTION ("cs_set_stop_active()");
1169
1170 switch (GET_STATE(STATE_CELL_SEL))
1171 {
1172 case CS_NULL:
1173 case CS_NULL_ACTIVE:
1174 SET_STATE (STATE_CELL_SEL, CS_NULL);
1175 break;
1176 case CS_IDLE:
1177 case CS_IDLE_ACTIVE:
1178 SET_STATE (STATE_CELL_SEL, CS_IDLE);
1179 break;
1180 }
1181 }
1182
1183 /*
1184 +--------------------------------------------------------------------+
1185 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1186 | STATE : code ROUTINE : cs_set_attributes |
1187 +--------------------------------------------------------------------+
1188
1189 PURPOSE : The function sets an attribute for a channel (e.g.
1190 emergency or low priority cell).
1191
1192 */
1193
1194 GLOBAL void cs_set_attributes (UBYTE attribute, USHORT arfcn)
1195 {
1196 GET_INSTANCE_DATA;
1197 UBYTE i;
1198
1199 TRACE_FUNCTION ("cs_set_attributes()");
1200
1201 /*
1202 * for all channels of the power campaign list
1203 */
1204 for (i=0;i<rr_data->cs_data.max_arfcn;i++)
1205 {
1206 /*
1207 * if it is the given channel number, set the attributes.
1208 */
1209 if ((rr_data->cs_data.arfcn[i]&ARFCN_MASK) EQ arfcn)
1210 rr_data->cs_data.attributes [i] |= attribute;
1211 }
1212 }
1213
1214 /*
1215 +--------------------------------------------------------------------+
1216 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1217 | STATE : code ROUTINE : cs_set_rxlev |
1218 +--------------------------------------------------------------------+
1219
1220 PURPOSE : Updating of a fieldstrength value in the list of the
1221 power campaign.
1222
1223 */
1224
1225 GLOBAL void cs_set_rxlev (UBYTE rxlev, USHORT arfcn)
1226 {
1227 GET_INSTANCE_DATA;
1228 UBYTE i;
1229
1230 TRACE_FUNCTION ("cs_set_rxlev()");
1231
1232 /*
1233 * for all channels in the power campaign list
1234 */
1235 for (i=0;i<rr_data->cs_data.max_arfcn;i++)
1236 {
1237 /*
1238 * if it is the given channel number, update the fieldstrength.
1239 */
1240 if ((rr_data->cs_data.arfcn[i]&ARFCN_MASK) EQ arfcn)
1241 rr_data->cs_data.rxlev [i] = rxlev;
1242 }
1243 }
1244
1245 /*
1246 +--------------------------------------------------------------------+
1247 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1248 | STATE : code ROUTINE : cs_clear_attributes |
1249 +--------------------------------------------------------------------+
1250
1251 PURPOSE : The function clears an attribute for a channel (e.g.
1252 emergency or low priority cell).
1253
1254 */
1255
1256 GLOBAL void cs_clear_attributes (UBYTE attribute, USHORT arfcn)
1257 {
1258 GET_INSTANCE_DATA;
1259 UBYTE i;
1260
1261 TRACE_FUNCTION ("cs_clear_attributes()");
1262
1263 /*
1264 * for all channels in the power campaign list
1265 */
1266 for (i=0;i<rr_data->cs_data.max_arfcn;i++)
1267 {
1268 /*
1269 * if it is the given channel number, clear the attributes.
1270 */
1271 if ((rr_data->cs_data.arfcn[i]&ARFCN_MASK) EQ arfcn)
1272 rr_data->cs_data.attributes [i] &= ~attribute;
1273 }
1274 }
1275
1276 /*
1277 +--------------------------------------------------------------------+
1278 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1279 | STATE : code ROUTINE : cs_mph_power_cnf |
1280 +--------------------------------------------------------------------+
1281
1282 PURPOSE : The result of a power request to layer 1. Layer 1 returns
1283 a list of up to 40 GSM 900 + 40 DCS 1800 channels to RR.
1284
1285 */
1286
1287 GLOBAL void cs_mph_power_cnf (T_MPH_POWER_CNF * mph_power_cnf)
1288 {
1289 GET_INSTANCE_DATA;
1290 UBYTE i,j,rxlev;
1291 USHORT mask = 0xFFFF; /* no mask */
1292 U8 x;
1293 BOOL copy = TRUE;
1294
1295 TRACE_FUNCTION ("cs_mph_power_cnf()");
1296
1297 if(GET_STATE(STATE_ATT) EQ ATT_CS_INIT )
1298 {
1299 if( !srv_store_prim ((T_PRIM *)D2P(mph_power_cnf)) )
1300 {
1301 /*
1302 * primitive storing failed
1303 */
1304 PFREE (mph_power_cnf);
1305 SET_STATE(STATE_CELL_SEL, CS_NULL);
1306 SET_STATE(STATE_ATT, ATT_NULL);
1307 }
1308 else
1309 {
1310 /*
1311 * Boot Time: Do not store primitive for more than 10 s in case
1312 * of quick registration. If the second activate_req does not
1313 * come before this time move to ATT_NULL.
1314 * The T_RESELECT timer is used for a different purpose here.
1315 */
1316 TIMERSTART(T_RESELECT, TRESELECT_VALUE);
1317 }
1318 return;
1319 }
1320
1321 TRACE_EVENT_P1 ("mph_power_cnf: %u freq.", mph_power_cnf->num_of_chan);
1322
1323 for (i = 0; i < mph_power_cnf->num_of_chan; i++)
1324 {
1325 TRACE_EVENT_P3("[%4u] std=%u rx_lev=%2u",
1326 mph_power_cnf->arfcn[i]&ARFCN_MASK,
1327 STD_GET_FROM_ARFCN(mph_power_cnf->arfcn[i]),
1328 mph_power_cnf->rx_lev[i]);
1329 }
1330
1331 /* Remove the inactive carriers from Black List */
1332 if((CS_GET_CURRENT_SEARCH_MODE EQ BLACK_LIST_SEARCH_MODE) OR
1333 (mph_power_cnf->num_of_chan))
1334 {
1335 /* In case of "Full", "Normal" and "Fast" search modes, remove
1336 * inactive carriers from Black List, only when there is atleast
1337 * one strong carrier in that area
1338 */
1339 cs_rem_inactive_carriers_from_bl(mph_power_cnf);
1340 }
1341
1342 if(CS_GET_CURRENT_SEARCH_MODE NEQ BLACK_LIST_SEARCH_MODE)
1343 {
1344 /* Update previous search mode */
1345 CS_SET_PREVIOUS_SEARCH_MODE(CS_GET_CURRENT_SEARCH_MODE);
1346
1347 switch (GET_STATE(STATE_CELL_SEL))
1348 {
1349 case CS_IDLE_ACTIVE:
1350 /* We will start parallel scan in 2 cases
1351 1. After HPLMN timer expiry
1352 2. After TREG timer expiry
1353 In these both cases don't mask out std and US_BIT
1354 */
1355 #ifndef TI_PS_FF_QUAD_BAND_SUPPORT
1356 mask = ARFCN_MASK; /* for parallel search mask out 'std' and US_BIT. */
1357 #endif
1358 /*lint -fallthrough*/
1359 case CS_NULL_ACTIVE:
1360 /*
1361 * copy channel list from layer 1, set the number
1362 * of entries in the list
1363 */
1364 rr_data->cs_data.max_arfcn = mph_power_cnf->num_of_chan;
1365
1366 /*
1367 * for all channels coming from layer 1
1368 */
1369 for (i=0,j=0;i<mph_power_cnf->num_of_chan;i++)
1370 {
1371 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
1372 x = cs_get_band_index(mph_power_cnf->arfcn[i]);
1373 #else
1374 x = get_band_index(mph_power_cnf->arfcn[i]);
1375 #endif
1376
1377 /* for OMAPS00109145, in which the I-Sample is not camping on to the agilent ,once down link failure is
1378 occured on current cell and at power levels < -100dB, this is because in the fast search mode we are not
1379 considering the low rxlev carriers. So this modification is required in order to come back to the network
1380 even after a down link failure has happened and if another BCCH carrer of less power become active and available
1381 for the mobile to camp */
1382
1383 rxlev = rr_data->dyn_config.lower_rxlev_thr[x];
1384 copy = TRUE;
1385
1386 if((i >= mph_power_cnf->num_of_white_list_chan) AND
1387 (mph_power_cnf->rx_lev[i] < rxlev))
1388
1389 {
1390 copy = FALSE;
1391 }
1392
1393 /*
1394 * check against band restrictions
1395 */
1396 if (copy AND cs_check_channel ((USHORT)(mph_power_cnf->arfcn[i]&ARFCN_MASK)))
1397 {
1398 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
1399 /* For parallel search mask serving cell */
1400 if ((GET_STATE(STATE_CELL_SEL) EQ CS_IDLE_ACTIVE) AND (rr_data->nc_data[SC_INDEX].arfcn EQ (mph_power_cnf->arfcn[i]&ARFCN_MASK)))
1401 rr_data->cs_data.arfcn[j] = mph_power_cnf->arfcn[i]&ARFCN_MASK;
1402 else
1403 #endif
1404 rr_data->cs_data.arfcn[j] = mph_power_cnf->arfcn[i]&mask;
1405 rr_data->cs_data.rxlev[j] = mph_power_cnf->rx_lev[i];
1406 /*
1407 * set initial to middle priority
1408 */
1409 rr_data->cs_data.attributes [j++] = CS_MID_PRIORITY;
1410 }
1411 else
1412 {
1413 /*
1414 * a cell is not copied due to band restrictions
1415 */
1416 rr_data->cs_data.max_arfcn--;
1417 }
1418 }
1419
1420 TRACE_EVENT_P2("No_chan > [%d]min_rxlev copied:%d",rxlev,rr_data->cs_data.max_arfcn);
1421
1422 /* Increase the priority of white list carriers */
1423 if(rr_data->cs_data.max_arfcn )
1424 cs_use_white_list_info(mph_power_cnf->num_of_white_list_chan);
1425
1426 /*
1427 * add actual PLMN to the found list, if available
1428 */
1429 if (rr_data->ms_data.req_mm_service EQ FUNC_NET_SRCH_BY_MMI AND
1430 GET_STATE(STATE_ATT) EQ ATT_IDLE AND
1431 (!rr_data->net_lost))
1432 cs_add_current_network_to_found_list ();
1433
1434 /*
1435 * Select channel with the highest fieldstrength and priority
1436 * and start BSIC scanning, else send signal that no further
1437 * channel is available
1438 */
1439 if (cs_sync_next_bsic () EQ FALSE)
1440 {
1441 SET_STATE (STATE_CELL_SEL, CS_IDLE);
1442 TIMERSTOP(T_PLMN_SEARCH);
1443 att_no_bsic_ind ();
1444 }
1445 else
1446 {
1447 SET_STATE (STATE_CELL_SEL, CS_IDLE_ACTIVE);
1448 }
1449
1450 /*
1451 * CS power measurements may be used to reorder arfcns'n in
1452 * MPH_NEIGHBOURCELL_REQ while TCSVALID is running
1453 */
1454 TIMERSTART(TCSVALID, THIRTY_SEC);
1455 break;
1456 }
1457 } /* NEQ black list search */
1458 else
1459 {
1460
1461 /* Stop the parallel PLMN search */
1462 att_notify_stop_plmn_search(FALSE);
1463
1464 SET_STATE (STATE_CELL_SEL, CS_IDLE);
1465
1466 /* Black list search is a temporary search. It is not used
1467 * in deciding the next search. Hence we need to update current search
1468 * mode when Black List search is over */
1469 CS_SET_CURRENT_SEARCH_MODE(CS_GET_PREVIOUS_SEARCH_MODE);
1470
1471
1472 } /* Black list search */
1473
1474 PFREE (mph_power_cnf);
1475 srv_use_stored_prim ();
1476 }
1477
1478 /*
1479 +--------------------------------------------------------------------+
1480 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1481 | STATE : code ROUTINE : cs_mph_bsic_cnf |
1482 +--------------------------------------------------------------------+
1483
1484 PURPOSE : The response of a FB/SB synchronisation request from layer 1.
1485
1486 */
1487
1488 GLOBAL void cs_mph_bsic_cnf (T_MPH_BSIC_CNF * mph_bsic_cnf)
1489 {
1490 GET_INSTANCE_DATA;
1491 U8 local_region;
1492 U16 local_arfcn;
1493
1494 TRACE_FUNCTION ("cs_mph_bsic_cnf()");
1495
1496 switch (GET_STATE (STATE_CELL_SEL))
1497 {
1498 case CS_IDLE_ACTIVE:
1499 if (mph_bsic_cnf->cs EQ CS_NO_ERROR)
1500 {
1501 UBYTE new_std = STD_GET_FROM_ARFCN(mph_bsic_cnf->arfcn);
1502 /*
1503 * FB / SB is decoded, cell has the attributes
1504 * BCCH detected and checked
1505 */
1506 /*
1507 * reset std from the current MPH_BSIC_CNF(only if it is non-zero)
1508 */
1509 TRACE_EVENT_P2("reset std: new_std = %d, old_std = %d", new_std, std);
1510 if(new_std)
1511 {
1512 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
1513 UBYTE new_region;
1514
1515 std = cs_update_std_ffs (new_std);
1516 new_region = srv_get_region_from_std(std);
1517 TRACE_EVENT_P1("update std: new_std = %d", std);
1518 #else
1519 UBYTE new_region = srv_get_region_from_std(new_std);
1520
1521 std = new_std;
1522 #endif
1523
1524 /* Both American and European bands are detected in the current
1525 * region. Following TREG timer expiry in Limited Service state,
1526 * non-parallel search will be issued
1527 * CSI-LLD section:4.3
1528 */
1529 if(rr_data->cs_data.region NEQ NOT_PRESENT_8BIT)
1530 {
1531 if(rr_data->cs_data.region NEQ new_region)
1532 {
1533 rr_data->cs_data.all_freq_area = TRUE;
1534 TRACE_EVENT("all_freq_area : 1");
1535 }
1536
1537 }
1538
1539 /* CSI-LLD section:4.1.1.3.12
1540 * This stores region in rr_data base by extracting from std
1541 */
1542 rr_data->cs_data.region = new_region;
1543 }
1544 /*
1545 * remove co channels
1546 */
1547 if (test_house EQ FALSE)
1548 cs_remove_co_channels ((USHORT)(mph_bsic_cnf->arfcn&ARFCN_MASK));
1549
1550 rr_data->cs_data.attributes [rr_data->cs_data.act_index] |=
1551 (CS_CHECK_FLAG | CS_BCCH_READ);
1552
1553 /* CSI-LLD section:4.1.1.11
1554 * Synchronisation succeeded. Remove the carrier from black list
1555 */
1556 cs_del_from_black_list(rr_data->cs_data.region,
1557 (U16)(mph_bsic_cnf->arfcn&ARFCN_MASK));
1558
1559 att_bsic_ind ((USHORT)(mph_bsic_cnf->arfcn&ARFCN_MASK),
1560 rr_data->cs_data.rxlev [rr_data->cs_data.act_index],
1561 mph_bsic_cnf->bsic);
1562 }
1563 else
1564 {
1565 /*
1566 * FB / SB is not decoded, cell has the attributes
1567 * BCCH not detected and checked
1568 */
1569 rr_data->cs_data.attributes [rr_data->cs_data.act_index] |= CS_CHECK_FLAG;
1570
1571 /* Extract region information */
1572
1573 local_arfcn = rr_data->cs_data.arfcn[rr_data->cs_data.act_index];
1574
1575 if(STD_GET_FROM_ARFCN(local_arfcn) NEQ STD_NOT_PRESENT)
1576 {
1577 /* During Non-Parallel search, region information is available
1578 * in ARFCN
1579 */
1580 local_region = CS_GET_REGION_FROM_FREQ(local_arfcn);
1581 }
1582 else
1583 {
1584 /* Parallel search case */
1585 local_region = srv_get_region_from_std(std);
1586 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
1587 if (local_region EQ BOTH_REGIONS)
1588 local_region = srv_get_region_from_std_arfcn (std, local_arfcn);
1589 #endif
1590 }
1591
1592 /* CSI-LLD section:4.1.1.6
1593 * Sync failed. Add the carrier to Black list
1594 */
1595 cs_add_to_black_list(local_region,
1596 (U16)(local_arfcn),
1597 rr_data->cs_data.rxlev[rr_data->cs_data.act_index]);
1598
1599 /* CSI-LLD section:4.1.1.11
1600 * Set the BLACK LIST attribute flag for this carrier
1601 */
1602 if(rr_data->cs_data.initial_plmn_search EQ INITIAL_PLMN_SEARCH_ACTIVE)
1603 {
1604 CS_SET_BLACK_LIST_FLAG(rr_data->cs_data.act_index);
1605 }
1606
1607 if (cs_sync_next_bsic () EQ FALSE)
1608 {
1609 TIMERSTOP(T_PLMN_SEARCH);
1610 SET_STATE (STATE_CELL_SEL, CS_IDLE);
1611 att_no_bsic_ind (); /* stop in RR */
1612 }
1613 }
1614 break;
1615
1616 #ifdef GPRS
1617 case CS_CCO:
1618 SET_STATE (STATE_CELL_SEL, CS_IDLE);
1619 if (rr_data->gprs_data.cr_pbcch_active OR rr_data->gprs_data.cr_pcco_active)
1620 {
1621 /*
1622 * a Packet Cell Change Order for a cell which
1623 * is not in the BA list has been requested by the NW
1624 */
1625 if (mph_bsic_cnf->cs EQ CS_NO_ERROR AND
1626 (mph_bsic_cnf->arfcn&ARFCN_MASK) EQ rr_data->gprs_data.arfcn AND
1627 mph_bsic_cnf->bsic EQ rr_data->gprs_data.bsic )
1628 {
1629 /*
1630 * PL successfuly sycnhronized to the cell
1631 * now RR will do a normal Cell Reselection
1632 */
1633 memset (&rr_data->nc_data[CR_INDEX],
1634 0,
1635 sizeof (T_NC_DATA));
1636 rr_data->nc_data[CR_INDEX].arfcn = mph_bsic_cnf->arfcn&ARFCN_MASK;
1637 rr_data->nc_data[CR_INDEX].bsic = mph_bsic_cnf->bsic;
1638
1639 /* CSI-LLD section:4.1.1.11
1640 * Synchronisation succeeded. Remove the carrier from black list
1641 */
1642 cs_del_from_black_list(rr_data->cs_data.region,
1643 (U16)(mph_bsic_cnf->arfcn&ARFCN_MASK));
1644
1645 if( rr_data->gprs_data.cr_pbcch_active )
1646 att_start_cell_reselection_pbcch(MODE_CELL_RESELECTION);
1647 else
1648 {
1649 att_init_cell_selection(CELL_RESELECTION, RR_ORIGINATED);
1650 rr_data->dyn_config.fcr = 0;
1651 rr_data->dyn_config.scr = 0;
1652 rr_data->bcch_error = 0;
1653 rr_data->pag_rec = FALSE;
1654 srv_clear_stored_prim (MPH_PAGING_IND);
1655 gprs_init_data_cr();
1656 dat_att_null();
1657 SET_STATE (STATE_ATT, ATT_CS3);
1658 att_build_idle_req (CR_INDEX, MODE_CELL_RESELECTION);
1659 }
1660 }
1661 else
1662 {
1663 /*
1664 * PL did not sycnhronize to the cell
1665 * inform GRR and wait for a CR_REQ(CR_REQ) with
1666 * the old cell and return to it
1667 */
1668 PALLOC(gprs_ind, RRGRR_GPRS_SI13_IND);
1669 rr_data->gprs_data.cr_pbcch_active = FALSE;
1670
1671 gprs_ind->cause = GPRS_CELL_NOT_SUITABLE;
1672 gprs_ind->serving_cell_info.bcch_arfcn = rr_data->gprs_data.arfcn;
1673 gprs_ind->serving_cell_info.bcch_bsic = rr_data->gprs_data.bsic;
1674
1675 TRACE_EVENT_P4 ("cs=%u C[%d] bsic=%u #%u",
1676 gprs_ind->cause,
1677 gprs_ind->serving_cell_info.bcch_arfcn,
1678 gprs_ind->serving_cell_info.bcch_bsic,
1679 __LINE__);
1680
1681 PSENDX(GRR, gprs_ind);
1682 /* wait for CR_REQ for old cell */
1683 }
1684 }
1685 else
1686 if (mph_bsic_cnf->cs EQ CS_NO_ERROR AND
1687 (mph_bsic_cnf->arfcn&ARFCN_MASK) EQ rr_data->gprs_data.arfcn AND
1688 mph_bsic_cnf->bsic EQ rr_data->gprs_data.bsic )
1689 {
1690 rr_data->gprs_data.tbf_est = TBF_EST_CCO;
1691
1692 rr_data->nc_data[CR_INDEX].arfcn = rr_data->gprs_data.arfcn;
1693 rr_data->nc_data[CR_INDEX].rxlev = 0;
1694 rr_data->nc_data[CR_INDEX].bsic = rr_data->gprs_data.bsic;
1695
1696 att_init_cr_data();
1697 TIMERSTART (T_RESELECT, TRESELECT_VALUE);
1698 rr_data->nc_data[CR_INDEX].bcch_error = 0;
1699 srv_clear_list (&rr_data->cr_data.cd.ncell_list);
1700 SET_STATE (STATE_ATT, ATT_CS2);
1701
1702 /* CSI-LLD section:4.1.1.11
1703 * Synchronisation succeeded. Remove the carrier from black list
1704 */
1705 cs_del_from_black_list(rr_data->cs_data.region,
1706 (U16)(mph_bsic_cnf->arfcn&ARFCN_MASK));
1707 /* wait for System Information Messages */
1708 }
1709 else /* initiate switch back to old cell */
1710 {
1711 dat_code_mph_old_chan_req();
1712
1713 PFREE ( rr_data->gprs_data.dl_data_ind );
1714 rr_data->gprs_data.dl_data_ind = NULL;
1715
1716 rr_data->gprs_data.reconn_cause = RRC_PROT_UNSPECIFIED;
1717 rr_data->gprs_data.cco_need_reconnect_cnf = FALSE;
1718 SET_STATE (STATE_DAT, DAT_CCO_3);
1719 }
1720 break;
1721
1722 case CS_XMEAS:
1723
1724 /* enter result in rr_data->gprs_data.rrgrr_ext_meas_cnf, call att_ext_meas_next_bsic */
1725
1726 {
1727 UBYTE bsic = mph_bsic_cnf->bsic;
1728 T_GPRS_DATA *gprs_data = &rr_data->gprs_data;
1729 T_RRGRR_EXT_MEAS_REQ *rrgrr_ext_meas_req = gprs_data->rrgrr_ext_meas_req;
1730
1731
1732 if ( rrgrr_ext_meas_req->report_type EQ REP_TYPE_1 OR /* "6 strongest carriers independent of BSIC decoding or not" */
1733 rrgrr_ext_meas_req->report_type EQ REP_TYPE_2 AND /* "BSICs for 6 carriers with decoded BSIC with allowed NCC" */
1734 mph_bsic_cnf->cs EQ CS_NO_ERROR AND
1735 (rrgrr_ext_meas_req->ncc_permitted & (1 << ((bsic>>3) & 0x07)))) /* check for "NCC allowed" */
1736 {
1737 T_RRGRR_EXT_MEAS_CNF *rrgrr_ext_meas_cnf = gprs_data->rrgrr_ext_meas_cnf;
1738 T_MPH_EXT_MEAS_CNF *mph_ext_meas_cnf = gprs_data->mph_ext_meas_cnf;
1739 UBYTE n = gprs_data->mph_ext_meas_num;
1740 USHORT arfcn = mph_ext_meas_cnf->arfcn[n];
1741 UBYTE rx_lev = mph_ext_meas_cnf->rx_lev[n];
1742 UBYTE idx = rr_ext_meas_idx ( arfcn );
1743 UBYTE k = rrgrr_ext_meas_cnf->c_xmeas_res++;
1744 T_xmeas_res *xmeas_res = &rrgrr_ext_meas_cnf-> xmeas_res[k];
1745
1746 /*
1747 * Function att_ext_meas_next_bsic checks for the maximum number of elements in the
1748 * array rrgrr_ext_meas_cnf->xmeas_res. Therefore this check is not performed here.
1749 */
1750
1751 xmeas_res->arfcn_idx.arfcn = arfcn;
1752 xmeas_res->arfcn_idx.idx = idx;
1753 xmeas_res->rxlev = rx_lev;
1754 if (mph_bsic_cnf->cs EQ CS_NO_ERROR)
1755 xmeas_res->bsic = bsic;
1756 else
1757 xmeas_res->bsic = RRGRR_INVALID_BSIC;
1758 }
1759 }
1760
1761 rr_data->gprs_data.mph_ext_meas_num++;
1762 att_ext_meas_next_bsic();
1763 break;
1764 #endif
1765 default:
1766 break;
1767 }
1768 PFREE (mph_bsic_cnf);
1769 }
1770
1771
1772 /*
1773 +--------------------------------------------------------------------+
1774 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1775 | STATE : code ROUTINE : cs_get_channel_from_found_list |
1776 +--------------------------------------------------------------------+
1777
1778 PURPOSE : If a network available list was created in former times
1779 (found_plmn / found_channel) and one of this networks is
1780 requested, the associated channel is stored to give it
1781 high priority to speed up cell selection.
1782
1783 */
1784 GLOBAL void cs_get_channel_from_found_list ()
1785 {
1786 GET_INSTANCE_DATA;
1787 UBYTE i;
1788 T_FOUND_ELEMENT * found;
1789
1790 TRACE_FUNCTION ("cs_get_channel_from_found_list()");
1791
1792 /*
1793 * initialise the local variable
1794 */
1795 rr_data->found_channel = NOT_PRESENT_16BIT;
1796
1797 /*
1798 * for all PLMNs stored in the found list
1799 */
1800 found = &rr_data->sc_data.found[0];
1801 for (i=0; i<rr_data->sc_data.found_entries; i++, found++)
1802 {
1803 /*
1804 * if the network in the found list is equal to the PLMN requested by MM,
1805 * set the found channel
1806 */
1807 /* Implements Measure#32: Row 124 */
1808 att_print_mcc_mnc(found->arfcn, found->plmn.mcc, found->plmn.mnc, S2I_STRING("list"));
1809 if (dat_plmn_equal_req (found->plmn.mcc,
1810 found->plmn.mnc,
1811 rr_data->ms_data.plmn.mcc,
1812 rr_data->ms_data.plmn.mnc))
1813 {
1814 rr_data->found_channel = found->arfcn;
1815
1816 /* Embed region information in the found channel arfcn */
1817 if(found->region EQ AMERICAN_REGION)
1818 rr_data->found_channel |= US_BIT;
1819 /* Implements Measure#32: Row 125 */
1820 att_print_mcc_mnc(found->arfcn, found->plmn.mcc, found->plmn.mnc, S2I_STRING("found_channel"));
1821 return;
1822 }
1823 }
1824 }
1825
1826 /*
1827 +--------------------------------------------------------------------+
1828 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1829 | STATE : code ROUTINE : cs_clear_channel_from_found_list |
1830 +--------------------------------------------------------------------+
1831
1832 PURPOSE : If a network available list was created in former times
1833 (found_plmn / rr_found_channel) and one of this networks is
1834 requested, the associated channel is stored to give it
1835 high priority to speed up cell selection. This function
1836 clear the stored data if a network or limited search is
1837 started.
1838
1839 */
1840
1841 GLOBAL void cs_clear_channel_from_found_list (void)
1842 {
1843 GET_INSTANCE_DATA;
1844 /*
1845 * initialize the found channel number
1846 */
1847 rr_data->found_channel = NOT_PRESENT_16BIT;
1848 }
1849
1850 /*
1851 +--------------------------------------------------------------------+
1852 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1853 | STATE : code ROUTINE : cs_remove_co_channels |
1854 +--------------------------------------------------------------------+
1855
1856 PURPOSE : If a channel x fails and the channels x-1 and x+1 have
1857 a fieldstrength difference greater 9 dB, it is not necessary
1858 to try on this cells. Sense of this is to speed up search.
1859
1860 */
1861
1862 static void cs_remove_co_channels (USHORT arfcn)
1863 {
1864 /*
1865 * depending on the channel number. Some extra cases
1866 * for channel numbers on the boarders of the frequency Band
1867 */
1868 switch (arfcn)
1869 {
1870 case CHANNEL_0:
1871 /*
1872 * E-GSM channel 0 has no co-channels
1873 */
1874 break;
1875
1876 /*
1877 * all LOW channel boarders
1878 */
1879 case LOW_CHANNEL_850:
1880 case LOW_CHANNEL_900:
1881 case LOW_CHANNEL_1800:
1882 case LOW_CHANNEL_EGSM:
1883 cs_remove_co_chan (arfcn, (USHORT)(arfcn+1));
1884 break;
1885
1886 /*
1887 * all HIGH channel boarders
1888 */
1889 case HIGH_CHANNEL_1900:
1890 if (std NEQ STD_1900 AND std NEQ STD_DUAL_US)
1891 {
1892 cs_remove_co_chan (arfcn, (USHORT)(arfcn+1));/* DCS 1800 */
1893 }
1894 /*lint -fallthrough*/
1895 case HIGH_CHANNEL_850:
1896 case HIGH_CHANNEL_900:
1897 case HIGH_CHANNEL_1800:
1898 case HIGH_CHANNEL_EGSM-1:
1899 cs_remove_co_chan (arfcn, (USHORT)(arfcn-1));
1900 break;
1901
1902 default:
1903 /*
1904 * all other channels inside the frequency bands
1905 */
1906 cs_remove_co_chan (arfcn, (USHORT)(arfcn+1));
1907 cs_remove_co_chan (arfcn, (USHORT)(arfcn-1));
1908 break;
1909 }
1910 }
1911
1912
1913 /*
1914 +--------------------------------------------------------------------+
1915 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1916 | STATE : code ROUTINE : cs_remove_co_chan |
1917 +--------------------------------------------------------------------+
1918
1919 PURPOSE : if co_chan - chan has a fieldstrength difference greater
1920 9 dBm, remove the channel.
1921
1922 */
1923
1924 static void cs_remove_co_chan (USHORT arfcn, USHORT co_arfcn)
1925 {
1926 GET_INSTANCE_DATA;
1927 UBYTE index_arfcn = NOT_PRESENT_8BIT;
1928 UBYTE index_co_arfcn = NOT_PRESENT_8BIT;
1929 UBYTE i;
1930 SHORT rxlev_arfcn;
1931 SHORT rxlev_co_arfcn;
1932 USHORT *p_arfcn;
1933 TRACE_FUNCTION ("cs_remove_co_chan()");
1934
1935 /*
1936 * calculate the index in the power campaign list
1937 * for the channel
1938 */
1939 p_arfcn = rr_data->cs_data.arfcn;
1940 for (i=0; i<rr_data->cs_data.max_arfcn; i++)
1941 {
1942 if (arfcn EQ (p_arfcn[i]&ARFCN_MASK))
1943 {
1944 index_arfcn = i;
1945 break;
1946 }
1947 }
1948 /*
1949 * if the channel is not inside the list,
1950 * then nothing is to compare else get the
1951 * fieldstrength.
1952 */
1953 if (index_arfcn EQ NOT_PRESENT_8BIT)
1954 return;
1955
1956 /*
1957 * calculate the index in the power campaign list
1958 * for the co-channel
1959 */
1960 for (i=0;i<rr_data->cs_data.max_arfcn;i++)
1961 {
1962 if (co_arfcn EQ (p_arfcn[i]&ARFCN_MASK))
1963 {
1964 index_co_arfcn = i;
1965 break;
1966 }
1967 }
1968 /*
1969 * if the co-channel is not inside the list,
1970 * then nothing is to compare else get the
1971 * fieldstrength.
1972 */
1973 if (index_co_arfcn EQ NOT_PRESENT_8BIT)
1974 return;
1975
1976 rxlev_arfcn = (SHORT)rr_data->cs_data.rxlev [index_arfcn];
1977 rxlev_co_arfcn = (SHORT)rr_data->cs_data.rxlev [index_co_arfcn];
1978
1979 /*
1980 * if the difference is > 9 dBm,
1981 * set to low priority.
1982 */
1983 if ((rxlev_arfcn - rxlev_co_arfcn) > 9)
1984 {
1985 rr_data->cs_data.attributes [index_co_arfcn] &= CS_SET_TO_LOW_PRIORITY;
1986 }
1987 }
1988
1989 /*
1990 +---------------------------------------------------------------------+
1991 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
1992 | STATE : code ROUTINE : cs_add_current_network .... |
1993 +---------------------------------------------------------------------+
1994
1995 PURPOSE : Adds the current PLMN to the found list if available.
1996
1997 */
1998 LOCAL void cs_add_current_network_to_found_list (void)
1999 {
2000 GET_INSTANCE_DATA;
2001 T_loc_area_ident *lai = &rr_data->nc_data[SC_INDEX].lai;
2002
2003 TRACE_FUNCTION ("cs_add_current_network_to_found_list()");
2004
2005 switch (rr_data->ms_data.rr_service)
2006 {
2007 case LIMITED_SERVICE:
2008 case FULL_SERVICE:
2009 /*
2010 * The mobile was in full service
2011 * Add this PLMN to the list of found PLMN
2012 * and clean power measurement list.
2013 */
2014 if (! att_plmn_in_found_list (lai->mcc, lai->mnc) AND
2015 rr_data->sc_data.found_entries < MAX_PLMN)
2016 {
2017 att_save_found_plmn (
2018 &rr_data->sc_data.found[rr_data->sc_data.found_entries],
2019 lai->mcc, lai->mnc,
2020 rr_data->nc_data[SC_INDEX].arfcn,
2021 rr_data->nc_data[SC_INDEX].rxlev, lai->lac, 0);
2022 rr_data->sc_data.found_entries++;
2023 }
2024 /*
2025 * Consider only high priority cells to speed up search
2026 */
2027 cs_del_list (&rr_data->sc_data.cd.ncell_list);
2028 break;
2029 }
2030 }
2031
2032 /*
2033 +--------------------------------------------------------------------+
2034 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2035 | STATE : code ROUTINE : cs_check_channel |
2036 +--------------------------------------------------------------------+
2037
2038 PURPOSE : Depending on the settings (default, GSM 900, DCS 1800)
2039 all non-interesting channels are removed.
2040
2041 */
2042 static UBYTE cs_check_channel (USHORT arfcn)
2043 {
2044 GET_INSTANCE_DATA;
2045 /*
2046 * TRACE_FUNCTION ("cs_check_channel")
2047 */
2048 {
2049 switch (rr_data->dyn_config.set_band)
2050 {
2051 case 0:
2052 /*
2053 * default behaviour
2054 */
2055 return TRUE;
2056
2057 case 1:
2058 /*
2059 * set to GSM 900
2060 */
2061 /*
2062 if (arfcn <= LOW_CHANNEL_900 OR
2063 arfcn >= HIGH_CHANNEL_900)
2064 */
2065 if (INRANGE(LOW_CHANNEL_900,arfcn,HIGH_CHANNEL_900))
2066 return FALSE;
2067 else
2068 return TRUE;
2069
2070 case 2:
2071 /*
2072 * set to DCS 1800
2073 */
2074 /*
2075 if (arfcn >= LOW_CHANNEL_1800 AND
2076 arfcn <= HIGH_CHANNEL_1800)
2077 */
2078 if (INRANGE(LOW_CHANNEL_1800,arfcn,HIGH_CHANNEL_1800))
2079 return TRUE;
2080 else
2081 return FALSE;
2082 }
2083 }
2084 return TRUE;
2085 }
2086
2087 /*
2088 +----------------------------------------------------------------------+
2089 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2090 | STATE : code ROUTINE : cs_check_region |
2091 +----------------------------------------------------------------------+
2092
2093 PURPOSE : This routine validates the region
2094 Cell Selection Improvements-LLD section:4.1.1.2
2095 */
2096
2097 GLOBAL BOOL cs_check_region(U8 region)
2098 {
2099 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
2100 if((region EQ EUROPEAN_REGION) OR (region EQ AMERICAN_REGION) OR (region EQ BOTH_REGIONS))
2101 #else
2102 if((region EQ EUROPEAN_REGION) OR (region EQ AMERICAN_REGION))
2103 #endif
2104 {
2105 return TRUE;
2106 }
2107 else
2108 {
2109 TRACE_ERROR("Invalid region");
2110 return FALSE;
2111 }
2112 }
2113
2114 /*
2115 +----------------------------------------------------------------------+
2116 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2117 | STATE : code ROUTINE : cs_validate_arfcn_index |
2118 +----------------------------------------------------------------------+
2119
2120 PURPOSE : This routine validates the ARFCN index
2121 Cell Selection Improvements-LLD section:4.1.1.2
2122 */
2123
2124 GLOBAL BOOL cs_check_arfcn_range(U16 arfcn)
2125 {
2126
2127 if(arfcn EQ CHANNEL_0)
2128 arfcn = CHANNEL_0_INTERNAL;
2129
2130 if((arfcn > CHANNEL_0) AND (arfcn <= CHANNEL_0_INTERNAL))
2131 {
2132 return TRUE;
2133 }
2134 else
2135 {
2136 TRACE_ERROR("Invalid ARFCN");
2137 return FALSE;
2138 }
2139 }
2140
2141 /*
2142 +----------------------------------------------------------------------+
2143 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2144 | STATE : code ROUTINE : cs_inc_sync_fail_counter |
2145 +----------------------------------------------------------------------+
2146
2147 PURPOSE : This routine increments the sync fail counter value for GSM
2148 carrier. Seperate counters are maintained for European and
2149 American regions.The size of SFC counter is 4 bits. As a
2150 result two carriers are accommodated in one byte. This function
2151 first converts the ARFCN range from 1-1023 to 0-511 format and
2152 increments the SFC accordingly. The SFC format is shown below
2153
2154 CSI-LLD section:4.1.1.5.9
2155
2156 ------------------------------------------
2157 | Index | MSB 4 bits | LSB 4 bits |
2158 ------------------------------------------
2159 | 0 | ARFCN : 2 | ARFCN : 1 |
2160 ------------------------------------------
2161 | 1 | ARFCN : 4 | ARFCN 3 |
2162 ------------------------------------------
2163 | - | - | - |
2164 ------------------------------------------
2165 | - | - | - |
2166 ------------------------------------------
2167 | 510 | ARFCN : 1022 | ARFCN: 1021 |
2168 ------------------------------------------
2169 | 511 | ARFCN : 0 | ARFCN :1023 |
2170 -----------------------------------------
2171 ARFCN: 0 = CHANNEL_0_INTERNAL
2172
2173 */
2174
2175 LOCAL void cs_inc_sync_fail_counter(U8 region, U16 arfcn)
2176 {
2177 GET_INSTANCE_DATA;
2178 U16 index=0;
2179 U8 inc = 0;
2180
2181 if(!cs_check_region(region))
2182 return;
2183
2184 if(!cs_check_arfcn_range((U16)(arfcn & ARFCN_MASK)))
2185 return;
2186
2187 if(arfcn EQ CHANNEL_0)
2188 arfcn = CHANNEL_0_INTERNAL;
2189
2190 /* Convert ARFCN range to 0-511 from 1-1023 range */
2191 index = ((arfcn & ARFCN_MASK) -1) >> 1;
2192
2193 if(arfcn & 0x01)
2194 {
2195 /* Increment LSB 4 bits for odd ARFCN */
2196 inc = 0x01;
2197 }
2198 else
2199 {
2200 /* Increment MSB 4 bits for even ARFCN */
2201 inc = 0x10;
2202 }
2203
2204 /* Increment the synchronisation counter */
2205 rr_data->cs_data.black_list.sfc[region][index] += inc;
2206
2207 TRACE_EVENT_P3("[%d]Reg,[%d]Arfcn, SFC = 0x%x",
2208 region,
2209 arfcn,
2210 rr_data->cs_data.black_list.sfc[region][index]);
2211 }
2212
2213 /*
2214 +----------------------------------------------------------------------+
2215 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2216 | STATE : code ROUTINE : cs_reset_sync_fail_counter |
2217 +----------------------------------------------------------------------+
2218
2219 PURPOSE : This routine resets the synchronisation fail counter value of
2220 GSM carrier.
2221 Seperate counters are maintained for European and American
2222 regions.The size of SFC counter is 4 bits. As a result two
2223 carriers are accommodated in one byte. This function
2224 first converts the ARFCN range from 1-1023 to 0-511 format and
2225 increments the SFC accordingly.The SFC format is shown below
2226
2227 CSI-LLD section:4.1.1.5.10
2228
2229 ------------------------------------------
2230 | Index | MSB 4 bits | LSB 4 bits |
2231 ------------------------------------------
2232 | 0 | ARFCN : 2 | ARFCN : 1 |
2233 ------------------------------------------
2234 | 1 | ARFCN : 4 | ARFCN 3 |
2235 ------------------------------------------
2236 | - | - | - |
2237 ------------------------------------------
2238 | - | - | - |
2239 ------------------------------------------
2240 | 510 | ARFCN : 1022 | ARFCN: 1021 |
2241 ------------------------------------------
2242 | 511 | ARFCN : 0 | ARFCN :1023 |
2243 -----------------------------------------
2244 ARFCN: 0 = CHANNEL_0_INTERNAL
2245 */
2246
2247 LOCAL void cs_reset_sync_fail_counter(U8 region, U16 arfcn)
2248 {
2249 GET_INSTANCE_DATA;
2250 USHORT index=0;
2251
2252 if(!cs_check_region(region))
2253 return;
2254
2255 if(!cs_check_arfcn_range((U16)(arfcn & ARFCN_MASK)))
2256 return;
2257
2258 if(arfcn EQ CHANNEL_0)
2259 arfcn = CHANNEL_0_INTERNAL;
2260
2261 /* Convert ARFCN range to 0-511 from 1-1023 range */
2262 index = ((arfcn & ARFCN_MASK) -1) >> 1;
2263
2264 if(arfcn & 0x01)
2265 {
2266 /* Reset LSB 4 bits for odd ARFCN */
2267 rr_data->cs_data.black_list.sfc[region][index] &=0xf0;
2268 }
2269 else
2270 {
2271 /* Reset MSB 4 bits for even ARFCN */
2272 rr_data->cs_data.black_list.sfc[region][index] &=0x0f;
2273 }
2274
2275 TRACE_EVENT_P2("SFC reset for [%d]Reg,[%d]Arfcn",region,arfcn);
2276 }
2277
2278 /*
2279 +----------------------------------------------------------------------+
2280 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2281 | STATE : code ROUTINE : cs_get_sync_fail_counter |
2282 +----------------------------------------------------------------------+
2283
2284 PURPOSE : This function returns the SFC counter of GSM carriers
2285 Seperate counters are maintained for European and American
2286 regions.The size of SFC counter is 4 bits. As a result two
2287 carriers are accommodated in one byte. This function
2288 first converts the ARFCN range from 1-1023 to 0-511 format and
2289 increments the SFC accordingly.The SFC format is shown below
2290
2291 CSI-LLD section:4.1.1.5.11
2292
2293 ------------------------------------------
2294 | Index | MSB 4 bits | LSB 4 bits |
2295 ------------------------------------------
2296 | 0 | ARFCN : 2 | ARFCN : 1 |
2297 ------------------------------------------
2298 | 1 | ARFCN : 4 | ARFCN 3 |
2299 ------------------------------------------
2300 | - | - | - |
2301 ------------------------------------------
2302 | - | - | - |
2303 ------------------------------------------
2304 | 510 | ARFCN : 1022 | ARFCN: 1021 |
2305 ------------------------------------------
2306 | 511 | ARFCN : 0 | ARFCN :1023 |
2307 -----------------------------------------
2308 ARFCN: 0 = CHANNEL_0_INTERNAL
2309 */
2310
2311 LOCAL U8 cs_get_sync_fail_counter(U8 region, U16 arfcn)
2312 {
2313 GET_INSTANCE_DATA;
2314 USHORT index=0;
2315 UBYTE sfc_count=0;
2316
2317 if(!cs_check_region(region))
2318 return sfc_count;
2319
2320 if(!cs_check_arfcn_range((U16)(arfcn & ARFCN_MASK)))
2321 return sfc_count;
2322
2323 if(arfcn EQ CHANNEL_0)
2324 arfcn = CHANNEL_0_INTERNAL;
2325
2326 /* Convert to 0-511 range from 1-1024 range */
2327 index = ((arfcn & ARFCN_MASK) -1) >> 1;
2328
2329 if(arfcn & 0x01)
2330 {
2331 /* obtain LSB 4 bits for odd ARFCN */
2332 sfc_count = (rr_data->cs_data.black_list.sfc[region][index] & 0x0f);
2333 }
2334 else
2335 {
2336 /* obtain MSB 4 bits for even ARFCN */
2337 sfc_count = (rr_data->cs_data.black_list.sfc[region][index] & 0xf0) >> 4;
2338 }
2339
2340 return sfc_count;
2341 }
2342
2343 /*
2344 +--------------------------------------------------------------------+
2345 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2346 | STATE : code ROUTINE : cs_add_to_black_list |
2347 +--------------------------------------------------------------------+
2348
2349 PURPOSE : This function is used to add GSM channels to "Black List".
2350 The function checks the "Black List" criteria before adding
2351 it to the list. This function is called whenever MS fails
2352 to synchronize to a GSM channel.
2353 CSI-LLD section:4.1.1.5.5
2354 */
2355
2356 GLOBAL void cs_add_to_black_list(U8 region, U16 arfcn, U8 rxlev)
2357 {
2358 GET_INSTANCE_DATA;
2359 U16 local_arfcn = arfcn & ARFCN_MASK;
2360
2361 TRACE_FUNCTION("cs_add_to_black_list()");
2362
2363 /* "Region" and "arfcn" are used to index "Black List" database
2364 * Check whether they are within proper range
2365 */
2366 if(!cs_check_region(region))
2367 return;
2368
2369 if(!cs_check_arfcn_range(local_arfcn))
2370 return;
2371
2372 /* Check Black List criteria */
2373 if(cs_check_black_list_criteria(region,arfcn,rxlev))
2374 {
2375 /* Add the channel to Black List */
2376 srv_set_channel(&rr_data->cs_data.black_list.list[region],local_arfcn);
2377
2378 /* Reset the sync fail counter for this channel. So that when this
2379 * carrier is removed from BL(BA_MA list), counter will start from zero
2380 * again
2381 */
2382 cs_reset_sync_fail_counter(region, local_arfcn);
2383
2384 TRACE_EVENT_P2("[%d]Reg[%d]Arfcn added to BL",region,local_arfcn);
2385 }
2386 }
2387
2388 /*
2389 +--------------------------------------------------------------------+
2390 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2391 | STATE : code ROUTINE : cs_del_from_black_list |
2392 +--------------------------------------------------------------------+
2393
2394 PURPOSE : This routine removes the arfcn from black list and resets the sync
2395 fail counter for that arfcn
2396 CSI-LLD section:4.1.1.5.6
2397 */
2398
2399 GLOBAL void cs_del_from_black_list(U8 region, U16 arfcn)
2400 {
2401 GET_INSTANCE_DATA;
2402 USHORT local_arfcn = arfcn & ARFCN_MASK;
2403 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
2404 UBYTE i;
2405 #endif
2406
2407 TRACE_FUNCTION("cs_del_from_black_list()");
2408
2409 /* "Region" and "arfcn" are used to index "Black List" database
2410 * Check whether they are within proper range
2411 */
2412 if(!cs_check_region(region))
2413 return;
2414
2415 if(!cs_check_arfcn_range(local_arfcn))
2416 return;
2417
2418 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
2419 if (region EQ BOTH_REGIONS)
2420 {
2421 for (i=0; i<MAX_REGIONS; i++)
2422 {
2423 if(srv_get_channel(&rr_data->cs_data.black_list.list[i],local_arfcn))
2424 {
2425 /* Remove the channel from Black List */
2426 srv_unset_channel(&rr_data->cs_data.black_list.list[i],local_arfcn);
2427
2428 /* Reset the sync fail counter for this channel */
2429 cs_reset_sync_fail_counter(i, local_arfcn);
2430
2431 TRACE_EVENT_P2("ARFCN:%d Region:%d deleted from BL",local_arfcn,i);
2432 }
2433 }
2434 }
2435 else
2436 {
2437 #endif
2438 if(srv_get_channel(&rr_data->cs_data.black_list.list[region],local_arfcn))
2439 {
2440 /* Remove the channel from Black List */
2441 srv_unset_channel(&rr_data->cs_data.black_list.list[region],local_arfcn);
2442
2443 /* Reset the sync fail counter for this channel */
2444 cs_reset_sync_fail_counter(region, local_arfcn);
2445
2446 TRACE_EVENT_P2("ARFCN:%d Region:%d deleted from BL",local_arfcn,region);
2447 }
2448 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
2449 }
2450 #endif
2451 }
2452
2453 /*
2454 +--------------------------------------------------------------------+
2455 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2456 | STATE : code ROUTINE : cs_clear_black_list |
2457 +--------------------------------------------------------------------+
2458
2459 PURPOSE : This function is used to clear "Black List" database.
2460 The function clears the "Black List" database from
2461 1) Only RAM
2462 2) Only FFS
2463 3) Both RAM and FFS.
2464
2465 This function is called in the following cases
2466 1) In response to "ERASE_BL" dynamic configuration command
2467 2) After Initial PLMN search based on its outcome
2468
2469 CSI-LLD section:4.1.1.5.1
2470 */
2471
2472 GLOBAL void cs_clear_black_list(U8 erase_type)
2473 {
2474 GET_INSTANCE_DATA;
2475 TRACE_FUNCTION ("cs_clear_black_list()");
2476
2477 /* clear Black List from RAM */
2478 if(erase_type & CLR_BLACK_LIST_RAM)
2479 {
2480 memset(&rr_data->cs_data.black_list,0,sizeof(T_CS_BLACK_LIST));
2481
2482 TRACE_EVENT ("Black List: RAM cleared");
2483 }
2484
2485 /* Clear Black List from FFS */
2486 #if defined(_SIMULATION_FFS_)
2487 if(erase_type & CLR_BLACK_LIST_FFS)
2488 {
2489 T_LIST local_black_list[MAX_REGIONS];
2490
2491 memset(&local_black_list[0],0,MAX_REGIONS*sizeof(T_LIST));
2492
2493 rr_csf_write_black_list(&local_black_list[0]);
2494
2495 TRACE_EVENT ("Black List: FFS cleared");
2496 }
2497 #endif
2498
2499 }
2500
2501 /*
2502 +--------------------------------------------------------------------+
2503 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2504 | STATE : code ROUTINE : cs_remove_BA_MA_from_black_list|
2505 +--------------------------------------------------------------------+
2506
2507 PURPOSE : This function is used to remove the GSM channels present
2508 in MA and BA lists from the "Black List". The function
2509 deletes these channels from the "Black List" and also
2510 resets their SFC counter to zero. This function is called
2511 whenever MS receives BA and MA list information in any RR
2512 message.
2513 CSI-LLD section:4.1.1.5.7
2514 */
2515
2516 GLOBAL void cs_remove_BA_MA_from_black_list(U8 region, T_LIST *source_list)
2517 {
2518 GET_INSTANCE_DATA;
2519
2520 TRACE_FUNCTION("cs_remove_BA_MA_from_black_list()");
2521
2522 /* "Region" is to index "Black List" database
2523 * Check whether it is within proper range
2524 */
2525 if(!cs_check_region(region))
2526 return;
2527
2528 if(source_list NEQ NULL)
2529 {
2530 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
2531 if (region EQ BOTH_REGIONS)
2532 {
2533 cs_remove_BA_MA_from_black_list(EUROPEAN_REGION,source_list);
2534 cs_remove_BA_MA_from_black_list(AMERICAN_REGION,source_list);
2535 }
2536 else
2537 #endif
2538 srv_unmask_list(&rr_data->cs_data.black_list.list[region],source_list);
2539
2540 TRACE_EVENT("BL updated with BA/MA/Inactive carrier list");
2541 }
2542 }
2543
2544
2545 /*
2546 +--------------------------------------------------------------------+
2547 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2548 | STATE : code ROUTINE : cs_rem_inactive_carriers_from_bl|
2549 +--------------------------------------------------------------------+
2550
2551 PURPOSE : This function is used to remove the inactive carriers from
2552 the "Black List". This is done whenever the mobile changes
2553 LA/RA
2554 Cell Selection Improvements-LLD section:4.1.1.3.4
2555 */
2556
2557 GLOBAL void cs_rem_inactive_carriers_from_bl(T_MPH_POWER_CNF *mph_power_cnf)
2558 {
2559
2560 TRACE_FUNCTION("cs_remove_inactive_from_black_list");
2561
2562 /* Remove the inactive carriers from Black list for European region */
2563 cs_remove_BA_MA_from_black_list(EUROPEAN_REGION,
2564 (T_LIST *)&mph_power_cnf->inactive_carrier_list.list[EUROPEAN_REGION]);
2565
2566 /* Remove the inactive carriers from Black list for American region */
2567 cs_remove_BA_MA_from_black_list(AMERICAN_REGION,
2568 (T_LIST *)&mph_power_cnf->inactive_carrier_list.list[AMERICAN_REGION]);
2569 }
2570
2571
2572 /*
2573 +--------------------------------------------------------------------+
2574 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2575 | STATE : code ROUTINE : cs_is_in_black_list |
2576 +--------------------------------------------------------------------+
2577
2578 PURPOSE : This routine checks whether a carrier is already part of Black
2579 list or not
2580 CSI-LLD section:4.1.1.5.12
2581 */
2582
2583 LOCAL BOOL cs_is_in_black_list(U8 region, U16 arfcn)
2584 {
2585 GET_INSTANCE_DATA;
2586 U8 status;
2587
2588 status = srv_get_channel((T_LIST*)&rr_data->cs_data.black_list.list[region],
2589 (USHORT)arfcn & ARFCN_MASK);
2590
2591 TRACE_EVENT_P3("[%d]Reg[%d]Arfcn, BL status:%d",region,arfcn,status);
2592
2593 return status;
2594 }
2595
2596 /*
2597 +--------------------------------------------------------------------+
2598 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2599 | STATE : code ROUTINE : cs_is_in_white_list |
2600 +--------------------------------------------------------------------+
2601
2602 PURPOSE : This routine checks whether a carrier is part of White
2603 list or not
2604 CSI-LLD section:4.1.2.2.7
2605 */
2606
2607 LOCAL BOOL cs_is_in_white_list(U8 region, U16 arfcn)
2608 {
2609 GET_INSTANCE_DATA;
2610 U8 status = FALSE;
2611
2612 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
2613 if((rr_data->cs_data.white_list.region EQ BOTH_REGIONS) OR
2614 (region EQ rr_data->cs_data.white_list.region))
2615 #else
2616 if(region EQ rr_data->cs_data.white_list.region)
2617 #endif
2618 {
2619 status = srv_get_channel(&rr_data->cs_data.white_list.list,
2620 ((U16)arfcn & ARFCN_MASK));
2621 }
2622
2623 TRACE_EVENT_P3("[%d]Reg[%d]Arfcn, WL status:%d", region,arfcn,status);
2624
2625 return status;
2626 }
2627
2628 /*
2629 +---------------------------------------------------------------------+
2630 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2631 | STATE : code ROUTINE : cs_check_black_list_criteria|
2632 +---------------------------------------------------------------------+
2633
2634 PURPOSE : This function checks the criteria for adding a GSM channel
2635 to "Black List". GSM channels are added to "Black List" only
2636 after they satisfy this criteria.
2637 CSI-LLD section:4.1.1.5.13
2638 */
2639
2640 LOCAL BOOL cs_check_black_list_criteria(U8 region,U16 arfcn,U8 rxlev)
2641 {
2642 GET_INSTANCE_DATA;
2643 UBYTE band_index;
2644 U16 local_arfcn = arfcn&ARFCN_MASK;
2645 TRACE_FUNCTION("cs_check_black_list_criteria()");
2646
2647 /* Check if the carrier is already present in the black list */
2648 if(cs_is_in_black_list(region, local_arfcn))
2649 return FALSE;
2650
2651 /* Check if the carrier is present in White List */
2652 if(cs_is_in_white_list(region, local_arfcn))
2653 return FALSE;
2654
2655 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
2656 band_index = cs_get_band_index(arfcn);
2657 #else
2658 band_index = get_band_index(arfcn);
2659 #endif
2660 /* RxLev of carrier is above upper threshold. Add the carrier
2661 * to Black List immediately
2662 */
2663 if(rxlev >= rr_data->dyn_config.upper_rxlev_thr[band_index])
2664 {
2665 return TRUE;
2666 }
2667
2668 /* Reasonably strong carrier. Add to Black List only if its sync fail
2669 * counter criteria is satisfied
2670 */
2671 if((rxlev >= rr_data->dyn_config.medium_rxlev_thr[band_index]) AND
2672 (rxlev < rr_data->dyn_config.upper_rxlev_thr[band_index]))
2673 {
2674 cs_inc_sync_fail_counter(region, local_arfcn);
2675
2676 if(cs_get_sync_fail_counter(region, local_arfcn) >= MAX_SYNC_FAILURES)
2677 {
2678 return TRUE;
2679 }
2680 }
2681 return FALSE;
2682 }
2683
2684 /*
2685 +----------------------------------------------------------------+
2686 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2687 | STATE : code ROUTINE : cs_update_black_list |
2688 +----------------------------------------------------------------+
2689
2690 PURPOSE : This function is used to update "Black List" database
2691 after initial PLMN search.It first clears the current
2692 "Black list" database from RAM and then adds some cells
2693 to "Black List" according to the current attrib-utes
2694 array values(BLACK_LIST_FLAG) of the Initial PLMN
2695 selection process. This function is called un-der the
2696 following cases
2697 1.MS enters Limited or No service after Initial PLMN search
2698 2.MS enters Full service in a different Location area
2699 from where it is switched off after initial PLMN search
2700 CSI-LLD section:4.1.1.5.8
2701 */
2702
2703 GLOBAL void cs_update_black_list(void)
2704 {
2705 GET_INSTANCE_DATA;
2706
2707 U8 update_black_list = FALSE;
2708 U8 i, region;
2709
2710 TRACE_FUNCTION("cs_update_black_list()");
2711
2712 /* If the outcome of first FUNC_PLMN_SEARCH is not full service.
2713 * Erase the Black List
2714 */
2715 if((rr_data->ms_data.req_mm_service EQ FUNC_PLMN_SRCH AND
2716 rr_data->ms_data.rr_service NEQ FULL_SERVICE))
2717 {
2718 update_black_list = TRUE;
2719 }
2720
2721 TRACE_EVENT_P8 ( "Old [%d]SC MCC/MNC r=%x%x%x/%x%x%x/%d",
2722 rr_data->cs_data.white_list.last_sc_arfcn,
2723 rr_data->cs_data.white_list.last_sc_lac.mcc[0],
2724 rr_data->cs_data.white_list.last_sc_lac.mcc[1],
2725 rr_data->cs_data.white_list.last_sc_lac.mcc[2],
2726 rr_data->cs_data.white_list.last_sc_lac.mnc[0],
2727 rr_data->cs_data.white_list.last_sc_lac.mnc[1],
2728 rr_data->cs_data.white_list.last_sc_lac.mnc[2],
2729 rr_data->cs_data.white_list.last_sc_lac.lac);
2730
2731 TRACE_EVENT_P8 ( "New [%d]SC MCC/MNC r=%x%x%x/%x%x%x/%d",
2732 rr_data->nc_data[SC_INDEX].arfcn,
2733 rr_data->nc_data[SC_INDEX].lai.mcc[0],
2734 rr_data->nc_data[SC_INDEX].lai.mcc[1],
2735 rr_data->nc_data[SC_INDEX].lai.mcc[2],
2736 rr_data->nc_data[SC_INDEX].lai.mnc[0],
2737 rr_data->nc_data[SC_INDEX].lai.mnc[1],
2738 rr_data->nc_data[SC_INDEX].lai.mnc[2],
2739 rr_data->nc_data[SC_INDEX].lai.lac);
2740
2741 /* If the current serving cell belongs to a different Location area.
2742 * Erase the Black List
2743 */
2744 if((rr_data->ms_data.rr_service EQ FULL_SERVICE) AND
2745 ((rr_data->cs_data.white_list.last_sc_arfcn EQ NOT_PRESENT_16BIT) OR
2746 (!dat_plmn_equal_req(rr_data->cs_data.white_list.last_sc_lac.mcc,
2747 rr_data->cs_data.white_list.last_sc_lac.mnc,
2748 rr_data->nc_data[SC_INDEX].lai.mcc,
2749 rr_data->nc_data[SC_INDEX].lai.mnc)) OR
2750 (rr_data->cs_data.white_list.last_sc_lac.lac NEQ
2751 rr_data->nc_data[SC_INDEX].lai.lac)))
2752 {
2753 update_black_list = TRUE;
2754 }
2755
2756 if(update_black_list)
2757 {
2758 /* Erase the current Black List */
2759 cs_clear_black_list(CLR_BLACK_LIST_RAM);
2760
2761 for(i=0;i<rr_data->cs_data.max_arfcn;i++)
2762 {
2763 if(CS_GET_BLACK_LIST_FLAG(i))
2764 {
2765 /* Obtain the region */
2766 region = CS_GET_REGION_FROM_FREQ(rr_data->cs_data.arfcn[i]);
2767
2768 cs_add_to_black_list(region,
2769 (USHORT)(rr_data->cs_data.arfcn[i]),
2770 rr_data->cs_data.rxlev[i]);
2771 }
2772 } /* i < max_arfcn */
2773
2774 TRACE_EVENT("BL updated after inital PLMN search");
2775 }
2776 }
2777
2778 /*
2779 +----------------------------------------------------------------------+
2780 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2781 | STATE : code ROUTINE : cs_store_black_list |
2782 +----------------------------------------------------------------------+
2783
2784 PURPOSE : This is a wrapper function for storing "Black List"
2785 information to FFS . This in turn calls
2786 rr_csf_write_black_list( ) to store "Black List" to FFS.
2787 This function is called during power off.
2788 CSI-LLD section:4.1.1.5.2
2789 */
2790
2791 GLOBAL void cs_store_black_list(void)
2792 {
2793 GET_INSTANCE_DATA;
2794 #if defined(_SIMULATION_FFS_)
2795 rr_csf_write_black_list(&rr_data->cs_data.black_list.list[0]);
2796 #endif
2797 }
2798
2799 /*
2800 +----------------------------------------------------------------------+
2801 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2802 | STATE : code ROUTINE : cs_get_new_search_mode |
2803 +----------------------------------------------------------------------+
2804
2805 PURPOSE : This routine returns the new search mode depending on the timer active
2806 and the previous search mode
2807 CSI-LLD section:4.1.3.4.1.1
2808 */
2809
2810 GLOBAL U8 cs_get_new_search_mode(void)
2811 {
2812 GET_INSTANCE_DATA;
2813 TRACE_FUNCTION("cs_get_new_search_mode()");
2814
2815 if(IS_TIMER_ACTIVE(T_FAST_CS))
2816 {
2817 /* Fast search timer is active */
2818 return FAST_SEARCH_MODE;
2819 }
2820
2821 if(IS_TIMER_ACTIVE(T_NORMAL_CS))
2822 {
2823 /* Normal search timer is active */
2824 return NORMAL_SEARCH_MODE;
2825 }
2826
2827 TRACE_EVENT_P1("Previous Search Mode : %d",
2828 rr_data->cs_data.previous_search_mode);
2829
2830 if((rr_data->cs_data.previous_search_mode EQ FULL_SEARCH_MODE)
2831 OR (rr_data->cs_data.previous_search_mode EQ FAST_SEARCH_MODE))
2832 {
2833 return NORMAL_SEARCH_MODE;
2834 }
2835
2836 if(rr_data->cs_data.previous_search_mode EQ NORMAL_SEARCH_MODE)
2837 {
2838 return FULL_SEARCH_MODE;
2839 }
2840
2841 return FULL_SEARCH_MODE;
2842 }
2843 /*
2844 +----------------------------------------------------------------------+
2845 | PROJECT : GSM-PS (8403) MODULE : RR_CS |
2846 | STATE : code ROUTINE : cs_handle_search_mode_timer |
2847 +----------------------------------------------------------------------+
2848
2849 PURPOSE : This routine handles the timers for the new search modes
2850 CSI-LLD section:4.1.3.4.1.2
2851 */
2852 GLOBAL void cs_handle_search_mode_timer(U8 search_mode)
2853 {
2854 GET_INSTANCE_DATA;
2855 TRACE_FUNCTION("cs_handle_search_mode_timer()");
2856
2857 if((search_mode EQ FAST_SEARCH_MODE) AND (rr_data->dyn_config.tfast_cs_val))
2858 {
2859 if(!IS_TIMER_ACTIVE(T_FAST_CS))
2860 {
2861 TIMERSTART (T_FAST_CS,rr_data->dyn_config.tfast_cs_val);
2862 }
2863 }
2864
2865 if((search_mode EQ NORMAL_SEARCH_MODE) AND (rr_data->dyn_config.tnormal_cs_val))
2866 {
2867 if(!IS_TIMER_ACTIVE(T_NORMAL_CS))
2868 {
2869 TIMERSTART (T_NORMAL_CS, rr_data->dyn_config.tnormal_cs_val);
2870 }
2871 }
2872
2873 if(search_mode EQ FULL_SEARCH_MODE)
2874 {
2875 if(rr_data->sc_data.mm_started EQ MM_ORIGINATED AND
2876 rr_data->ms_data.req_mm_service NEQ FUNC_NET_SRCH_BY_MMI)
2877 {
2878 TIMERSTOP(T_FAST_CS);
2879 TIMERSTOP(T_NORMAL_CS);
2880 }
2881 }
2882 }
2883
2884 /*
2885 +--------------------------------------------------------------------+
2886 | PROJECT : GSM-PS (6147) MODULE : RR_CS |
2887 | STATE : code ROUTINE : cs_update_std_ffs |
2888 +--------------------------------------------------------------------+
2889
2890 PURPOSE : This function updates the std value depending upon the
2891 frequency band support by MS. Frequncy band support is
2892 available in the FFS.
2893
2894 */
2895 #ifdef TI_PS_FF_QUAD_BAND_SUPPORT
2896 LOCAL UBYTE cs_update_std_ffs (UBYTE new_std)
2897 {
2898 UBYTE freq_bands;
2899
2900 rr_csf_get_freq_bands (&freq_bands);
2901 switch (new_std)
2902 {
2903 case STD_DUAL_EGSM:
2904 if ((freq_bands & BAND_GSM_850) EQ BAND_GSM_850)
2905 {
2906 return STD_850_900_1800;
2907 }
2908 break;
2909 case STD_DUAL_US:
2910 if ((freq_bands & BAND_GSM_900) EQ BAND_GSM_900)
2911 {
2912 return STD_850_900_1900;
2913 }
2914 break;
2915 default:
2916 TRACE_EVENT_P1 ("wrong std for updation using FFS %x", new_std);
2917 }
2918 return new_std;
2919 }
2920 #endif
2921 #endif