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comparison gsm-fw/g23m-gsm/dl/dl_dph.c @ 673:2f7df7a314f8

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gsm-fw/g23m-gsm subtree: initial import from LoCosto source
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 28 Sep 2014 23:20:04 +0000
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children 10a5096f9891
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672:0dc6f9e8e980 673:2f7df7a314f8
1 /*
2 +-----------------------------------------------------------------------------
3 | Project : GSM-PS
4 | Modul : DL_DPH
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 distributing
18 | all primitives of the lower layers.
19 +-----------------------------------------------------------------------------
20 */
21
22 #ifndef DL_DPH_C
23 #define DL_DPH_C
24
25 #define ENTITY_DL
26
27 /*==== INCLUDES ===================================================*/
28
29 #include "typedefs.h"
30 #include <string.h>
31 #include "pconst.cdg"
32 #include "vsi.h"
33 #include "pconst.cdg"
34 #include "custom.h"
35 #include "gsm.h"
36 #include "mon_dl.h"
37 #include "prim.h"
38 #include "pei.h"
39 #include "tok.h"
40 #include "ccdapi.h"
41 #include "dl.h"
42 #include "dl_trc.h"
43
44 /*==== EXPORT =====================================================*/
45
46 /*==== PRIVAT =====================================================*/
47 #if defined(_SIMULATION_) && !defined(DL_2TO1)
48 LOCAL void dph_ph_data_req (T_PH_DATA_REQ * data_req);
49 #endif /* _SIMULATION_ && !DL_2TO1 */
50
51 #if defined(DL_2TO1) || defined(USE_L1M_GS001_1)
52 LOCAL U8 convert_dcch_ch_type (U8 channel_type);
53 #endif /* DL_2TO1 || USE_L1M_GS001_1 */
54
55 LOCAL void dl_process_downlink (UBYTE error_flag, UBYTE channel_type,
56 UBYTE * frame, ULONG fn);
57
58 /*==== VARIABLES ==================================================*/
59
60 /*==== FUNCTIONS ==================================================*/
61 #if defined(DL_2TO1)
62 #if defined(_SIMULATION_)
63 /*
64 +--------------------------------------------------------------------+
65 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
66 | STATE : code ROUTINE : dph_ph_ready_to_send |
67 +--------------------------------------------------------------------+
68
69 PURPOSE : Reception of a PH_READY_TO_SEND primitive.
70 Uplink opportunity for simulation.
71
72 */
73
74 GLOBAL void l1test_call_mphc_read_dcch (T_L1TEST_CALL_MPHC_READ_DCCH * ready)
75 {
76 UBYTE no_signalling_flag = NO_SIGNALLING;
77 T_RADIO_FRAME *frame = NULL;
78
79 GET_INSTANCE_DATA;
80 dl_data->dl_active = FALSE;
81
82 switch (ready->chn_mode)
83 {
84 case CM_SIGNALLING_ONLY:
85 /*
86 * Take over the behaviour of dll_read_dcch():
87 * No ch_type is given by the layer 1 for SDCCH and FACCH,
88 * the first parameter ch_type of the fuction dl1_uplink_ind() get a
89 * value set to zero.
90 */
91 no_signalling_flag = SIG_ONLY;
92 break;
93 default:
94 break;
95 }
96
97 frame = dl1_uplink_ind (0, no_signalling_flag);
98
99 if (frame)
100 {
101 l1test_return_mphc_read_dcch (frame);
102 }
103
104 MY_PFREE (ready);
105 }
106
107 GLOBAL void l1test_call_mphc_read_sacch (T_L1TEST_CALL_MPHC_READ_SACCH * ready)
108 {
109 T_RADIO_FRAME *frame = NULL;
110
111 GET_INSTANCE_DATA;
112 dl_data->dl_active = FALSE;
113
114 frame = dl1_uplink_ind (L2_CHANNEL_SACCH, SIG_ONLY);
115 if (frame)
116 {
117 l1test_return_mphc_read_sacch (frame);
118 }
119
120 MY_PFREE (ready);
121 }
122
123 /*
124 +--------------------------------------------------------------------+
125 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
126 | STATE : code ROUTINE : dph_ph_data_req |
127 +--------------------------------------------------------------------+
128
129 PURPOSE : Sending of a PH_DATA_REQ primitive.
130 Uplink for simulation.
131
132 */
133
134 GLOBAL void l1test_return_mphc_read_dcch (T_RADIO_FRAME * frame)
135 {
136 PALLOC(data_req, L1TEST_RETURN_MPHC_READ_DCCH);
137
138 TRACE_FUNCTION ("l1test_return_mphc_read_dcch()");
139
140 memcpy(data_req->l2_frame.frame_array, frame->frame_array, sizeof(data_req->l2_frame));
141 PSEND (hCommPL, data_req);
142 }
143
144 GLOBAL void l1test_return_mphc_read_sacch (T_RADIO_FRAME * frame)
145 {
146 PALLOC(data_req, L1TEST_RETURN_MPHC_READ_SACCH);
147
148 TRACE_FUNCTION ("l1test_return_mphc_read_sacch()");
149
150 memcpy(data_req->l2_frame.frame_array, frame->frame_array, sizeof(data_req->l2_frame));
151 PSEND (hCommPL, data_req);
152 }
153
154 /*
155 +--------------------------------------------------------------------+
156 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
157 | STATE : code ROUTINE : l1test_call_mphc_dcch_downlink |
158 +--------------------------------------------------------------------+
159
160 PURPOSE : Reception of a L1TEST_CALL_MPHC_DCCH_DOWNLINK primitive.
161
162 */
163
164 GLOBAL void l1test_call_mphc_dcch_downlink (T_L1TEST_CALL_MPHC_DCCH_DOWNLINK * data_ind)
165 {
166 /*
167 * Take over the behaviour of dll_dcch_downlink():
168 * No ch_type is given by the layer 1 for SDCCH and FACCH,
169 * the second parameter ch_type of the function dl_process_downlink() get a
170 * value set to zero.
171 */
172 dl_data->dl_active = FALSE;
173
174 dl_process_downlink (data_ind->valid_flag, 0, data_ind->l2_frame.frame_array, NOT_PRESENT_32BIT);
175
176 MY_PFREE (data_ind);
177 }
178 #endif /* _SIMULATION_ */
179
180 /*
181 +--------------------------------------------------------------------+
182 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
183 | STATE : code ROUTINE : dph_ph_data_ind |
184 +--------------------------------------------------------------------+
185
186 PURPOSE : Reception of a PH_DATA_IND primitive.
187 This function is only available in stacks >= TCS5 (DL_2TO1).
188 A function with the same name exist for the old GSM/GPRS stack.
189
190 It is used for SACCH downlink on target as well as on simulation.
191 In opposite to the old GSM/GPRS stack, a functional interface
192 (l1test_call_mphc_dcch_downlink) is used by the dual mode stack
193 implementation for SDCCH and FACCH during simulation. Therefore
194 this function is only used for SACCH.
195
196 */
197
198 GLOBAL void dph_ph_data_ind (T_MPHC_PH_DATA_IND * data_ind)
199 {
200 /*
201 * Take over the behaviour of dll_dcch_downlink():
202 * No ch_type is given by the layer 1 for SDCCH and FACCH,
203 * the second parameter ch_type of the function dl_process_downlink() get a
204 * value set to zero.
205 */
206
207 TRACE_FUNCTION ("dph_ph_data_ind() 2TO1");
208
209 if (data_ind->l2_channel_type EQ L2_CHANNEL_SACCH)
210 dl_process_downlink (data_ind->error_cause,
211 L2_CHANNEL_SACCH,
212 data_ind->l2_frame.frame_array,
213 NOT_PRESENT_32BIT);
214
215 MY_PFREE (data_ind);
216 }
217
218 #else /* DL_2TO1 */
219
220 #if defined(_SIMULATION_)
221 /*
222 +--------------------------------------------------------------------+
223 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
224 | STATE : code ROUTINE : dph_ph_ready_to_send |
225 +--------------------------------------------------------------------+
226
227 PURPOSE : Reception of a PH_READY_TO_SEND primitive.
228 Uplink opportunity for simulation.
229
230 */
231
232 GLOBAL void dph_ph_ready_to_send (T_PH_READY_TO_SEND * ready)
233 {
234 UBYTE no_signalling_flag = SIG_ONLY;
235 T_RADIO_FRAME *frame;
236 UBYTE ch_type;
237 switch (ready->ch_type)
238 {
239 case L2_CHANNEL_FACCH_F:
240 case L2_CHANNEL_FACCH_H:
241 no_signalling_flag = NO_SIGNALLING;
242 /*lint -fallthrough */
243 case L2_CHANNEL_SDCCH:
244 /*
245 * Take over the behaviour of dll_read_dcch():
246 * No ch_type is given by the layer 1 for SDCCH and FACCH,
247 * the first parameter ch_type of the function dl1_uplink_ind() get a
248 * value set to zero.
249 */
250 ch_type = 0;
251 break;
252 default:
253 ch_type = ready->ch_type;
254 break;
255 }
256
257 frame = dl1_uplink_ind (ch_type, no_signalling_flag);
258 if (frame)
259 {
260 PALLOC_SDU (data, PH_DATA_REQ, 23*BITS_PER_BYTE);/* T_PH_DATA_REQ */
261
262 /*
263 * In case the value of ready->ch_type was set to zero above it has to set
264 * to the value of dcch0_ch_type corresponding the behaviour of the
265 * function dl1_uplink_ind().
266 if (ready->ch_type EQ 0)
267 {
268 T_DL_DATA *dl_data = dl_get_data ();
269 ready->ch_type = dl_data->dcch0_ch_type ? dl_data->dcch0_ch_type : L2_CHANNEL_SDCCH;
270 }
271 */
272
273 memcpy (data->sdu.buf, frame, 23);/*lint !e419 (Warning -- Apparent data overrun) */
274 if (ready->ch_type EQ L2_CHANNEL_SACCH)
275 {
276 data->sdu.buf[0] = 0;/* layer 1 header occupies 2 bytes */
277 data->sdu.buf[1] = 0;/*lint !e415 (Warning -- access of out-of-bounds pointer) */
278 data->sdu.o_buf = 2 * BITS_PER_BYTE;
279 data->sdu.l_buf = 21 * BITS_PER_BYTE;
280 }
281 else
282 {
283 data->sdu.o_buf = 0;
284 data->sdu.l_buf = 23 * BITS_PER_BYTE;
285 }
286 data->ch_type = ready->ch_type;
287 dph_ph_data_req (data);
288 }
289
290 MY_PFREE (ready);
291 }
292
293 /*
294 +--------------------------------------------------------------------+
295 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
296 | STATE : code ROUTINE : dph_ph_data_req |
297 +--------------------------------------------------------------------+
298
299 PURPOSE : Sending of a PH_DATA_REQ primitive.
300 Uplink for simulation.
301
302 */
303
304 LOCAL void dph_ph_data_req (T_PH_DATA_REQ * data_req)
305 {
306 TRACE_FUNCTION ("dph_ph_data_req()");
307
308 #if defined(DL_TRACE_WIN32)
309 if (data_req->ch_type EQ L2_CHANNEL_SACCH)
310 {
311 /*lint -e416 (Warning -- creation of out-of-bounds pointer) */
312 FTRC (data_req->ch_type, data_req->sdu.buf+2, 1); /* uplink SACCH */
313 /*lint +e416 (Warning -- creation of out-of-bounds pointer) */
314 }
315 else
316 {
317 FTRC (data_req->ch_type, data_req->sdu.buf, 1); /* uplink other */
318 }
319 #endif /* DL_TRACE_WIN32 */
320
321 PSENDX (PL, data_req);
322 }
323 #endif /* _SIMULATION */
324
325 /*
326 +--------------------------------------------------------------------+
327 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
328 | STATE : code ROUTINE : dph_ph_data_ind |
329 +--------------------------------------------------------------------+
330
331 PURPOSE : Reception of a PH_DATA_IND primitive.
332 This function is only available in the old GSM/GPRS stack (<= TCS4).
333 A function with the same name exist for the dual mode stack.
334
335 It can be used for SACCH downlink on target as well as on simulation.
336 During simulation the old GSM/GPRS stack uses this primitive
337 function for SDCCH and FACCH also. In this case it takes over the
338 functional interface dll_dcch_downlink().
339 In the current implementation of the old GSM/GPRS stack the ALR
340 queue is exclusively used for incoming PH_DATA_IND primitives from
341 L1 for target builds. Only Acknowledged frames (SAPI=3) and frames
342 with Bter format (short PD header) are forwarded to DL and handled
343 by this function.
344
345 */
346
347 GLOBAL void dph_ph_data_ind (T_PH_DATA_IND * ph_data_ind)
348 {
349 if (ph_data_ind)
350 {
351 #if defined(_SIMULATION_)
352 /*
353 * Take over the behaviour of dll_dcch_downlink():
354 * No ch_type is given by the layer 1 for SDCCH and FACCH,
355 * the first parameter ch_type of the function dl_process_downlink() get a
356 * value set to zero.
357 */
358 switch (ph_data_ind->l2_channel_type)
359 {
360 case L2_CHANNEL_SDCCH:
361 case L2_CHANNEL_FACCH_F:
362 case L2_CHANNEL_FACCH_H:
363 ph_data_ind->l2_channel_type = 0;
364 break;
365 default:
366 break;
367 }
368 #else /* _SIMULATION */
369 if (ph_data_ind->l2_channel_type EQ L2_CHANNEL_SACCH)
370 #endif /* _SIMULATION */
371 dl_process_downlink (ph_data_ind->error_cause,
372 ph_data_ind->l2_channel_type,
373 ph_data_ind->l2_frame.A,
374 NOT_PRESENT_32BIT);
375
376 MY_PFREE (ph_data_ind);
377 }
378 }
379 #endif /* DL_2TO1 */
380
381 /*
382 +--------------------------------------------------------------------+
383 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
384 | STATE : code ROUTINE : dl_process_downlink |
385 +--------------------------------------------------------------------+
386
387 PURPOSE : really processing of layer 2 frame downlink.
388
389 */
390 LOCAL void dl_process_downlink (UBYTE error_flag, UBYTE channel_type, UBYTE * frame, ULONG fn)
391 {
392 GET_INSTANCE_DATA;
393
394 TRACE_FUNCTION ("dll_process_downlink()");
395
396 /* set the active dedicated channel type if necessary */
397 if (channel_type EQ 0)
398 {
399 TRACE_EVENT_WIN_P3 ("dl_process_downlink(%u,) -> ch=%u FN=%d", channel_type, dl_data->dcch0_ch_type, ((int)fn));
400 channel_type = dl_data->dcch0_ch_type ? dl_data->dcch0_ch_type : L2_CHANNEL_SDCCH;
401 }
402 else
403 {
404 TRACE_EVENT_WIN_P1 ("dl_process_downlink(%u,)", channel_type);
405 }
406
407 if (channel_type NEQ L2_CHANNEL_SACCH)
408 dl_data->interrupt_context = TRUE;
409
410 if (fn NEQ NOT_PRESENT_32BIT)
411 dl_data->fn = fn;
412
413 #if defined(DL_TRACE_ENABLED)
414 {
415 UCHAR trace_channel = TRACE_CH_UNKNOWN;
416 UCHAR frame_sapi;
417
418 switch (channel_type)
419 {
420 case L2_CHANNEL_SACCH:
421 frame_sapi = ((*(frame + 2)) & 0x1c) >> 2;
422 if (frame_sapi EQ PS_SAPI_0)
423 trace_channel = C_DCCH0;
424 else if (frame_sapi EQ PS_SAPI_3)
425 trace_channel = C_DCCH3;
426 break;
427 case L2_CHANNEL_SDCCH:
428 frame_sapi = ((*frame) & 0x1c) >> 2;
429 if (frame_sapi EQ PS_SAPI_0)
430 trace_channel = C_DCCH0;
431 else if (frame_sapi EQ PS_SAPI_3)
432 trace_channel = C_DCCH3;
433 break;
434 case L2_CHANNEL_FACCH_F:
435 case L2_CHANNEL_FACCH_H:
436 frame_sapi = ((*frame) & 0x1c) >> 2;
437 if (frame_sapi EQ PS_SAPI_0)
438 trace_channel = C_DCCH0;
439 break;
440 default:
441 break;
442 }/* endswitch chan */
443 if (error_flag EQ VALID_BLOCK)
444 {
445 DL_OFFLINE_TRACE (TRACE_DOWNLINK, trace_channel, channel_type, &frame[0]);
446 }
447 }
448 #endif /* DL_TRACE_ENABLED */
449
450 #if defined(DL_TRACE_WIN32)
451 if (error_flag EQ VALID_BLOCK)
452 {
453 if (channel_type EQ L2_CHANNEL_SACCH)
454 FTRC (channel_type, frame+2, 0); /* downlink SACCH */
455 else
456 FTRC (channel_type, frame, 0); /* downlink other */
457 }
458 #endif /* DL_TRACE_WIN32 */
459
460 if (channel_type EQ 0)
461 {
462 DL_OFFLINE_TRACE (TRACE_DL_EVENT, TRACE_CH_UNKNOWN, channel_type, "DL:no valid channel type");
463 }
464 else
465 {
466 dl_downlink (error_flag, channel_type, &frame[0], fn);
467 }
468
469 dl_data->interrupt_context = FALSE;
470 }
471
472 /*
473 +--------------------------------------------------------------------+
474 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
475 | STATE : code ROUTINE : dl1_uplink_ind |
476 +--------------------------------------------------------------------+
477
478 PURPOSE : Functional Interface for the uplink direction of the
479 logical channels SACCH/SDCCH/FACCH.
480 (only used by the target)
481
482 */
483 GLOBAL T_RADIO_FRAME * dl1_uplink_ind (UBYTE channel_type, UBYTE no_signalling_flag)
484 {
485 T_RADIO_FRAME * pRadioFrame;
486 UCHAR channel;
487 UCHAR sapi;
488 UCHAR signalling = SIG_ONLY;
489
490 GET_INSTANCE_DATA;
491
492 dl_data->interrupt_context = TRUE;
493
494 /* set the active dedicated channel type if necessary */
495 if (channel_type EQ 0)
496 channel_type = dl_data->dcch0_ch_type;
497
498 TRACE_EVENT_WIN_P1 ("dl1_uplink_ind(ch_type=%u,)", channel_type);
499
500 switch (channel_type)
501 {
502 case L2_CHANNEL_SACCH:
503 /*
504 * The priority arrangement on the SACCH must ensure that if a SAPI = 3
505 * frame is awaiting transmission, two SAPI = 0 frames are not sent in
506 * consecutive SACCH frames. In addition, for the mobile to network
507 * direction it must also be ensured that any SAPI = 3 frame is followed
508 * by at least one SAPI = 0 frame.
509 *
510 * SAPI = 3 is set as default value. The function dl_uplink() together with
511 * the variable 'sacch_last_uplink_sapi' determind the actual value.
512 * e.g. if last uplinked SACCH frame was one with SAPI=3
513 * or
514 * if no SACCH SAPI=3 frame is awaiting transmission
515 * then a SACCH SAPI=0 frame should be uplinked
516 */
517 channel = C_SACCH0;
518 sapi = PS_SAPI_3;
519 TRACE_EVENT_WIN_P2 ("dl1_uplink_ind(%s, %s)",
520 CH_TYPE_NAME[channel_type], signalling EQ SIG_ONLY?"SIG_ONLY":"NO_SIGNALLING");
521 break;
522
523 default:
524 TRACE_ERROR ("dl1_uplink_ind():no valid channel type, use SDCCH instead");
525 channel_type = L2_CHANNEL_SDCCH;
526 /*lint -fallthrough*/
527 case L2_CHANNEL_FACCH_F:
528 case L2_CHANNEL_FACCH_H:
529 case L2_CHANNEL_SDCCH:
530 /*
531 * build frame for SAPI = 3 will be called (with lower priority)
532 * if no data is waiting for SAPI = 0.
533 */
534 channel = C_DCCH0;
535 sapi = PS_SAPI_0;
536 dl_data->cch[channel].ch_type = channel_type;
537 signalling = no_signalling_flag;
538 TRACE_EVENT_WIN_P3 ("dl1_uplink_ind(%s, %s) SAPI=%u",
539 CH_TYPE_NAME[channel_type], signalling EQ SIG_ONLY?"SIG_ONLY":"NO_SIGNALLING",
540 sapi);
541 break;
542 }
543
544 pRadioFrame= dl_uplink (channel, sapi, signalling, FALSE);
545 if (pRadioFrame)
546 {
547 #ifndef DL_2TO1
548 DL_OFFLINE_TRACE (TRACE_UPLINK, channel, channel_type, &pRadioFrame->A[0]);
549 #else
550 DL_OFFLINE_TRACE (TRACE_UPLINK, channel, channel_type, &pRadioFrame->frame_array[0]);
551 #endif
552 }
553
554 dl_data->interrupt_context = FALSE;
555 return pRadioFrame; /* return pointer to frame to layer 1 */
556 }
557
558 #if defined(DL_2TO1) || defined(USE_L1M_GS001_1)
559 /*
560 +--------------------------------------------------------------------+
561 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
562 | STATE : code ROUTINE : convert_dcch_ch_type |
563 +--------------------------------------------------------------------+
564
565 PURPOSE : Converts dedicated channel types to layer 2 channel types
566 according to L1M_GS001_1 and L1M_GS001_3.
567
568 */
569 LOCAL U8 convert_dcch_ch_type (U8 channel_type)
570 {
571 UBYTE ch_type;
572 switch (channel_type)
573 {
574 case MPHC_CH_TCH_F: ch_type = L2_CHANNEL_FACCH_F;break;
575 case MPHC_CH_TCH_H: ch_type = L2_CHANNEL_FACCH_H;break;
576 case MPHC_CH_SDCCH_4:
577 case MPHC_CH_SDCCH_8:ch_type = L2_CHANNEL_SDCCH;break;
578 }
579 return ch_type;
580 }
581 #endif /* DL_2TO1 || USE_L1M_GS001_1 */
582
583 /*
584 +--------------------------------------------------------------------+
585 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
586 | STATE : code ROUTINE : dll_read_dcch |
587 +--------------------------------------------------------------------+
588
589 PURPOSE : Functional Interface for the uplink direction of
590 SDCCH/FACCH. Only used by the TI target, look into
591 TI interface S922 or L1M_GS001_1.
592
593 */
594 #if defined(DL_2TO1) || defined(USE_L1M_GS001_1)
595 GLOBAL T_RADIO_FRAME * dll_read_dcch (U8 chn_mode, U8 channel_type)
596 {
597 return dl1_uplink_ind(convert_dcch_ch_type(channel_type), chn_mode);
598 }
599 #else /* DL_2TO1 || USE_L1M_GS001_1 */
600 GLOBAL T_RADIO_FRAME * dll_read_dcch (U8 chn_mode)
601 {
602 /* 0 stands for the currently active SDCCH and FACCH channel type */
603 return dl1_uplink_ind(0, chn_mode);
604 }
605 #endif /* DL_2TO1 || USE_L1M_GS001_1 */
606
607 /*
608 +--------------------------------------------------------------------+
609 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
610 | STATE : code ROUTINE : dll_read_sacch |
611 +--------------------------------------------------------------------+
612
613 PURPOSE : Functional Interface for the uplink direction of SACCH.
614 Only used by the TI target, look into
615 TI interface S922 or L1M_GS001_1.
616
617 */
618 GLOBAL T_RADIO_FRAME * dll_read_sacch (UBYTE chn_mode)
619 {
620 return dl1_uplink_ind (L2_CHANNEL_SACCH, SIG_ONLY);
621 }
622
623 /*
624 +--------------------------------------------------------------------+
625 | PROJECT : GSM-PS (6147) MODULE : DL_DPH |
626 | STATE : code ROUTINE : dll_dcch_downlink |
627 +--------------------------------------------------------------------+
628
629 PURPOSE : Functional Interface for the downlink direction of
630 FACCH/DCCH. Only used by the TI target, look into
631 TI interface S922 or L1M_GS001_1.
632
633 */
634 #if defined(DL_2TO1) || defined(USE_L1M_GS001_1)
635 GLOBAL void dll_dcch_downlink(U32 * data_ptr, U8 valid_flag, U8 channel_type, U32 fn)
636 {
637 if ((data_ptr NEQ NULL) AND (valid_flag EQ DATA_VALID))
638 {
639 dl_process_downlink (VALID_BLOCK, convert_dcch_ch_type(channel_type),
640 (UBYTE *)data_ptr, fn);
641 }
642 }
643 #else /* DL_2TO1 || USE_L1M_GS001_1 */
644 #if defined(SEND_FN_TO_L2_IN_DCCH) && (SEND_FN_TO_L2_IN_DCCH == 1)
645 GLOBAL void dll_dcch_downlink(U32 * data_ptr, U8 valid_flag, U32 fn)
646 {
647 if ((data_ptr NEQ NULL) AND valid_flag)
648 {
649 /*
650 * channel type 0 stands for currently active dedicated
651 * SDCCH or FACCH channel type
652 */
653 dl_process_downlink (VALID_BLOCK, 0, (UBYTE *)data_ptr, fn);
654 }
655 }
656 #else /* SEND_FN_TO_L2_IN_DCCH == 1 */
657 GLOBAL void dll_dcch_downlink(U32 * data_ptr, U8 valid_flag)
658 {
659 if ((data_ptr NEQ NULL) AND valid_flag)
660 {
661 /*
662 * channel type 0 stands for currently active dedicated
663 * SDCCH or FACCH channel type
664 */
665 dl_process_downlink (VALID_BLOCK, 0, (UBYTE *)data_ptr, NOT_PRESENT_32BIT);
666 }
667 }
668 #endif /* SEND_FN_TO_L2_IN_DCCH == 1 */
669 #endif /* DL_2TO1 || USE_L1M_GS001_1 */
670 #endif /* DL_DPH_C */
671