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comparison g23m-gsm/dl/dl_dcch3.c @ 0:75a11d740a02

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initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 09 Jun 2016 00:02:41 +0000
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-1:000000000000 0:75a11d740a02
1 /*
2 +-----------------------------------------------------------------------------
3 | Project : GSM-PS
4 | Modul : DL_DCCH3
5 +-----------------------------------------------------------------------------
6 | Copyright 2002 Texas Instruments Berlin, AG
7 | All rights reserved.
8 |
9 | This file is confidential and a trade secret of Texas
10 | Instruments Berlin, AG
11 | The receipt of or possession of this file does not convey
12 | any rights to reproduce or disclose its contents or to
13 | manufacture, use, or sell anything it may describe, in
14 | whole, or in part, without the specific written consent of
15 | Texas Instruments Berlin, AG.
16 +-----------------------------------------------------------------------------
17 | Purpose : This Modul defines the functions for the slow
18 | dedicated control channel (SAPI 3) of the component DL
19 +-----------------------------------------------------------------------------
20 */
21
22 #ifndef DL_DCCH3_C
23 #define DL_DCCH3_C
24
25 #include "config.h"
26 #include "fixedconf.h"
27 #include "condat-features.h"
28
29 #define ENTITY_DL
30
31 /*==== INCLUDES ===================================================*/
32
33 #include "typedefs.h"
34 #include <string.h>
35 #include "pconst.cdg"
36 #include "vsi.h"
37 #include "custom.h"
38 #include "gsm.h"
39 #include "mon_dl.h"
40 #include "prim.h"
41 #include "pei.h"
42 #include "tok.h"
43 #include "ccdapi.h"
44 #include "dl.h"
45 #include "dl_trc.h"
46
47
48 /*==== EXPORT =====================================================*/
49
50 /*==== PRIVAT =====================================================*/
51
52 /*==== VARIABLES ==================================================*/
53
54 /*==== FUNCTIONS ==================================================*/
55 /*
56 +--------------------------------------------------------------------+
57 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 |
58 | STATE : code ROUTINE : dcch3_init_dl_data |
59 +--------------------------------------------------------------------+
60
61 PURPOSE : Initialisation of SDCCH data (SAPI 3) for an instance.
62
63 */
64
65 GLOBAL void dcch3_init_dl_data (void)
66 {
67 GET_INSTANCE_DATA;
68 T_CCH *pcch = &dl_data->cch[C_DCCH3];
69
70 TRACE_FUNCTION ("dcch3_init_dl_data()");
71
72 memset (pcch, 0, sizeof (T_CCH));
73 com_clear_queue (PS_SAPI_3);
74
75 if (dl_data->dcch3_in_msg)
76 {
77 COM_FREE_POINTER (dl_data->dcch3_in_msg);
78 dl_data->dcch3_in_msg = NULL;
79 }
80
81 dl_data->dcch3_disc_request = FALSE;
82 set_channel_state(C_DCCH3, STATE_DISABLED);
83 }
84
85 /*
86 +--------------------------------------------------------------------+
87 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 |
88 | STATE : code ROUTINE : dcch3_enable |
89 +--------------------------------------------------------------------+
90
91 PURPOSE : Enabling SAPI 3 connections.
92
93 */
94
95 GLOBAL void dcch3_enable (UBYTE ch_type)
96 {
97 GET_INSTANCE_DATA;
98 TRACE_FUNCTION ("dcch3_enable()");
99
100 switch (dl_data->state[C_DCCH3])
101 {
102 case STATE_DISABLED:
103 set_channel_state (C_DCCH3, STATE_IDLE_DL);
104 dl_data->cch[C_DCCH3].ch_type = ch_type;
105 break;
106 default:
107 break;
108 }
109 }
110
111 /*
112 +--------------------------------------------------------------------+
113 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 |
114 | STATE : code ROUTINE : dcch3_establish_req |
115 +--------------------------------------------------------------------+
116
117 PURPOSE : Establish Request for SDCCH (SAPI 3).
118
119 */
120
121 GLOBAL void dcch3_establish_req (T_DL_ESTABLISH_REQ * est_req)
122 {
123 GET_INSTANCE_DATA;
124 TRACE_FUNCTION ("dcch3_establish_req()");
125
126 DL_OFFLINE_TRACE (TRACE_DL_EVENT, C_DCCH3, est_req->ch_type, "est req");
127
128
129 switch (dl_data->state[C_DCCH3])
130 {
131 case STATE_IDLE_DL:
132 case STATE_DISABLED:
133 case STATE_MULTIPLE_FRAME_ESTABLISHED:
134 case STATE_TIMER_RECOVERY:
135 {
136 T_CCH *pcch = &dl_data->cch[C_DCCH3];
137
138 pcch->ch_type = est_req->ch_type;
139
140 dl_data->dcch3_disc_request = FALSE;
141 dl_data->dcch3_unserved = com_queue_awaiting_transmission (PS_SAPI_3) ?
142 DL_UNSERVED : DL_ALL_DONE;
143
144 com_clear_queue (PS_SAPI_3);
145 pcch->vtx = SABM_CMD;
146 pcch->time_flag = TRUE;
147 pcch->rc = 0;
148 set_channel_state (C_DCCH3, STATE_AWAITING_ESTABLISHMENT);
149 TRACE_EVENT_WIN_P5 ("EST_REQ: %s SAPI=%u vtx=%s (%s#%u)", CH_TYPE_NAME[pcch->ch_type],
150 est_req->sapi, VTX_NAME[pcch->vtx],
151 __FILE10__, __LINE__);
152 }
153
154 break;
155 default:
156 break;
157 }
158 COM_FREE_POINTER (est_req);
159 }
160
161 /*
162 +--------------------------------------------------------------------+
163 | PROJECT : GSM-PS (6147) MODULE : DL_SDCCH |
164 | STATE : code ROUTINE : sdcch3_release_req |
165 +--------------------------------------------------------------------+
166
167 PURPOSE : Release Request for SDCCH (SAPI 3).
168
169 */
170
171 GLOBAL BOOL dcch3_release_req (T_DL_RELEASE_REQ * release_req)
172 {
173 GET_INSTANCE_DATA;
174 BOOL bFree = TRUE;
175
176 TRACE_FUNCTION ("dcch3_release_req()");
177
178 if (release_req->mode EQ DL_LOCAL_END_RELEASE)
179 {
180 DL_OFFLINE_TRACE (TRACE_DL_EVENT, C_DCCH3, release_req->ch_type, "local end release req");
181 bFree = FALSE;
182 }
183 else
184 {
185 DL_OFFLINE_TRACE (TRACE_DL_EVENT, C_DCCH3, release_req->ch_type, "normal release req");
186 dl_data->cch[C_DCCH3].ch_type = release_req->ch_type;
187 switch (dl_data->state[C_DCCH3])
188 {
189 default:
190 bFree = FALSE;
191 break;
192
193 case STATE_AWAITING_ESTABLISHMENT:
194 case STATE_MULTIPLE_FRAME_ESTABLISHED:
195 case STATE_TIMER_RECOVERY:
196 if (!dl_data->dcch3_disc_request AND (dl_data->cch[C_DCCH3].vtx EQ RR_CMD))
197 {
198 dl_data->dcch3_disc_request = TRUE;
199 }
200 else
201 {
202 com_prepare_DISC (C_DCCH3, release_req->sapi);
203 }
204 break;
205
206 case STATE_AWAITING_RELEASE:
207 dl_data->cch[C_DCCH3].T200_counter = 0;
208 break;
209 }
210 }
211
212 if (bFree EQ FALSE)
213 {
214 PREUSE (release_req, release_cnf, DL_RELEASE_CNF);
215 release_cnf->indication =
216 com_queue_awaiting_transmission (PS_SAPI_3) ? DL_UNSERVED : DL_ALL_DONE;
217 PSENDX (RR, release_cnf);
218 dcch3_init_dl_data ();
219 }
220
221 return bFree;
222 }
223
224
225 /*
226 +--------------------------------------------------------------------+
227 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 |
228 | STATE : code ROUTINE : dcch3_mdl_release_req |
229 +--------------------------------------------------------------------+
230
231 PURPOSE : Release Request from Mobility Management for SDCCH (SAPI 3).
232
233 */
234
235 GLOBAL void dcch3_mdl_release_req (void)
236 {
237 GET_INSTANCE_DATA;
238 TRACE_FUNCTION ("dcch3_mdl_release_req()");
239
240 DL_OFFLINE_TRACE (TRACE_DL_EVENT, C_DCCH3, dl_data->cch[C_DCCH3].ch_type, "mdl rel req");
241
242 switch (dl_data->state[C_DCCH3])
243 {
244 case STATE_AWAITING_ESTABLISHMENT:
245 case STATE_TIMER_RECOVERY:
246 case STATE_AWAITING_RELEASE:
247 drr_dl_release_cnf (dl_data->cch[C_DCCH3].ch_type, PS_SAPI_3, TRUE);
248 break;
249
250 case STATE_MULTIPLE_FRAME_ESTABLISHED:
251 drr_dl_release_ind (dl_data->cch[C_DCCH3].ch_type, PS_SAPI_3, NOT_PRESENT_8BIT, TRUE);
252 break;
253
254 default:
255 break;
256 }
257 }
258
259 /*
260 +--------------------------------------------------------------------+
261 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 |
262 | STATE : code ROUTINE : dcch3_data_req |
263 +--------------------------------------------------------------------+
264
265 PURPOSE : Data Request on SDCCH (SAPI 3).
266
267 */
268
269 GLOBAL void dcch3_data_req (T_DL_DATA_REQ * data_req)
270 {
271 GET_INSTANCE_DATA;
272 TRACE_FUNCTION ("dcch3_data_req()");
273
274 switch (dl_data->state[C_DCCH3])
275 {
276 case STATE_MULTIPLE_FRAME_ESTABLISHED:
277 case STATE_TIMER_RECOVERY:
278 com_store_queue (PS_SAPI_3, data_req);
279 break;
280
281 default:
282 COM_FREE_POINTER (data_req);
283 break;
284 }
285 }
286
287 /*
288 +--------------------------------------------------------------------+
289 | PROJECT : GSM-PS (6147) MODULE : DL_SDCCH |
290 | STATE : code ROUTINE : dcch3_check_disc |
291 +--------------------------------------------------------------------+
292
293 PURPOSE : DISC command frame on DCCH3.
294
295 */
296
297 GLOBAL int dcch3_check_disc (int send)
298 {
299 GET_INSTANCE_DATA;
300 TRACE_FUNCTION ("dcch3_check_disc()");
301
302 if (dl_data->dcch3_disc_request AND !(dl_data->cch[C_DCCH3].vtx EQ RR_CMD))
303 {
304 com_prepare_DISC (C_DCCH3, PS_SAPI_3);
305 return uplink_awaiting_release (C_DCCH3, PS_SAPI_3);
306 }
307 else
308 return send;
309 }
310 #endif /* DL_DCCH3_C */