FreeCalypso > hg > fc-tourmaline
annotate src/g23m-gsm/dl/dl_dcch3.c @ 303:f76436d19a7a default tip
!GPRS config: fix long-standing AT+COPS chance hanging bug
There has been a long-standing bug in FreeCalypso going back years:
sometimes in the AT command bring-up sequence of an ACI-only MS,
the AT+COPS command would produce only a power scan followed by
cessation of protocol stack activity (only L1 ADC traces), instead
of the expected network search sequence. This behaviour was seen
in different FC firmware versions going back to Citrine, and seemed
to follow some law of chance, not reliably repeatable.
This bug has been tracked down and found to be specific to !GPRS
configuration, stemming from our TCS2/TCS3 hybrid and reconstruction
of !GPRS support that was bitrotten in TCS3.2/LoCosto version.
ACI module psa_mms.c, needed only for !GPRS, was missing in the TCS3
version and had to be pulled from TCS2 - but as it turns out,
there is a new field in the MMR_REG_REQ primitive that needs to be
set correctly, and that psa_mms.c module is the place where this
initialization needed to be added.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 08 Jun 2023 08:23:37 +0000 |
parents | fa8dc04885d8 |
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rev | line source |
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1
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | Project : GSM-PS |
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4 | Modul : DL_DCCH3 |
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5 +----------------------------------------------------------------------------- |
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6 | Copyright 2002 Texas Instruments Berlin, AG |
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7 | All rights reserved. |
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8 | |
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9 | This file is confidential and a trade secret of Texas |
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10 | Instruments Berlin, AG |
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11 | The receipt of or possession of this file does not convey |
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12 | any rights to reproduce or disclose its contents or to |
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13 | manufacture, use, or sell anything it may describe, in |
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14 | whole, or in part, without the specific written consent of |
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15 | Texas Instruments Berlin, AG. |
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16 +----------------------------------------------------------------------------- |
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17 | Purpose : This Modul defines the functions for the slow |
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18 | dedicated control channel (SAPI 3) of the component DL |
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19 +----------------------------------------------------------------------------- |
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20 */ |
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21 |
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22 #ifndef DL_DCCH3_C |
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23 #define DL_DCCH3_C |
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24 |
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25 #define ENTITY_DL |
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26 |
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27 /*==== INCLUDES ===================================================*/ |
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28 |
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29 #include "typedefs.h" |
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30 #include <string.h> |
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31 #include "pconst.cdg" |
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32 #include "vsi.h" |
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33 #include "custom.h" |
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34 #include "gsm.h" |
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35 #include "mon_dl.h" |
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36 #include "prim.h" |
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37 #include "pei.h" |
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38 #include "tok.h" |
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39 #include "ccdapi.h" |
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40 #include "dl.h" |
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41 #include "dl_trc.h" |
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42 |
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43 |
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44 /*==== EXPORT =====================================================*/ |
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45 |
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46 /*==== PRIVAT =====================================================*/ |
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47 |
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48 /*==== VARIABLES ==================================================*/ |
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49 |
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50 /*==== FUNCTIONS ==================================================*/ |
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51 /* |
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52 +--------------------------------------------------------------------+ |
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53 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 | |
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54 | STATE : code ROUTINE : dcch3_init_dl_data | |
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55 +--------------------------------------------------------------------+ |
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56 |
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57 PURPOSE : Initialisation of SDCCH data (SAPI 3) for an instance. |
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58 |
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59 */ |
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60 |
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61 GLOBAL void dcch3_init_dl_data (void) |
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62 { |
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63 GET_INSTANCE_DATA; |
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64 T_CCH *pcch = &dl_data->cch[C_DCCH3]; |
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65 |
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66 TRACE_FUNCTION ("dcch3_init_dl_data()"); |
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67 |
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68 memset (pcch, 0, sizeof (T_CCH)); |
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69 com_clear_queue (PS_SAPI_3); |
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70 |
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71 if (dl_data->dcch3_in_msg) |
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72 { |
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73 COM_FREE_POINTER (dl_data->dcch3_in_msg); |
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74 dl_data->dcch3_in_msg = NULL; |
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75 } |
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76 |
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77 dl_data->dcch3_disc_request = FALSE; |
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78 set_channel_state(C_DCCH3, STATE_DISABLED); |
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79 } |
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80 |
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81 /* |
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82 +--------------------------------------------------------------------+ |
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83 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 | |
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84 | STATE : code ROUTINE : dcch3_enable | |
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85 +--------------------------------------------------------------------+ |
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86 |
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87 PURPOSE : Enabling SAPI 3 connections. |
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88 |
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89 */ |
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90 |
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91 GLOBAL void dcch3_enable (UBYTE ch_type) |
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92 { |
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93 GET_INSTANCE_DATA; |
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94 TRACE_FUNCTION ("dcch3_enable()"); |
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95 |
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96 switch (dl_data->state[C_DCCH3]) |
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97 { |
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98 case STATE_DISABLED: |
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99 set_channel_state (C_DCCH3, STATE_IDLE_DL); |
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100 dl_data->cch[C_DCCH3].ch_type = ch_type; |
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101 break; |
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102 default: |
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103 break; |
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104 } |
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105 } |
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106 |
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107 /* |
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108 +--------------------------------------------------------------------+ |
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109 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 | |
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110 | STATE : code ROUTINE : dcch3_establish_req | |
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111 +--------------------------------------------------------------------+ |
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112 |
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113 PURPOSE : Establish Request for SDCCH (SAPI 3). |
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114 |
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115 */ |
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116 |
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117 GLOBAL void dcch3_establish_req (T_DL_ESTABLISH_REQ * est_req) |
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118 { |
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119 GET_INSTANCE_DATA; |
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120 TRACE_FUNCTION ("dcch3_establish_req()"); |
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121 |
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122 DL_OFFLINE_TRACE (TRACE_DL_EVENT, C_DCCH3, est_req->ch_type, "est req"); |
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123 |
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124 |
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125 switch (dl_data->state[C_DCCH3]) |
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126 { |
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127 case STATE_IDLE_DL: |
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128 case STATE_DISABLED: |
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129 case STATE_MULTIPLE_FRAME_ESTABLISHED: |
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130 case STATE_TIMER_RECOVERY: |
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131 { |
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132 T_CCH *pcch = &dl_data->cch[C_DCCH3]; |
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133 |
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134 pcch->ch_type = est_req->ch_type; |
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135 |
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136 dl_data->dcch3_disc_request = FALSE; |
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137 dl_data->dcch3_unserved = com_queue_awaiting_transmission (PS_SAPI_3) ? |
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138 DL_UNSERVED : DL_ALL_DONE; |
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139 |
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140 com_clear_queue (PS_SAPI_3); |
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141 pcch->vtx = SABM_CMD; |
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142 pcch->time_flag = TRUE; |
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143 pcch->rc = 0; |
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144 set_channel_state (C_DCCH3, STATE_AWAITING_ESTABLISHMENT); |
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145 TRACE_EVENT_WIN_P5 ("EST_REQ: %s SAPI=%u vtx=%s (%s#%u)", CH_TYPE_NAME[pcch->ch_type], |
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146 est_req->sapi, VTX_NAME[pcch->vtx], |
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147 __FILE10__, __LINE__); |
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148 } |
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149 |
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150 break; |
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151 default: |
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152 break; |
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153 } |
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154 COM_FREE_POINTER (est_req); |
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155 } |
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156 |
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157 /* |
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158 +--------------------------------------------------------------------+ |
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159 | PROJECT : GSM-PS (6147) MODULE : DL_SDCCH | |
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160 | STATE : code ROUTINE : sdcch3_release_req | |
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161 +--------------------------------------------------------------------+ |
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162 |
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163 PURPOSE : Release Request for SDCCH (SAPI 3). |
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164 |
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165 */ |
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166 |
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|
167 GLOBAL BOOL dcch3_release_req (T_DL_RELEASE_REQ * release_req) |
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168 { |
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169 GET_INSTANCE_DATA; |
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170 BOOL bFree = TRUE; |
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171 |
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172 TRACE_FUNCTION ("dcch3_release_req()"); |
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173 |
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174 if (release_req->mode EQ DL_LOCAL_END_RELEASE) |
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175 { |
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|
176 DL_OFFLINE_TRACE (TRACE_DL_EVENT, C_DCCH3, release_req->ch_type, "local end release req"); |
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177 bFree = FALSE; |
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178 } |
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179 else |
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|
180 { |
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181 DL_OFFLINE_TRACE (TRACE_DL_EVENT, C_DCCH3, release_req->ch_type, "normal release req"); |
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|
182 dl_data->cch[C_DCCH3].ch_type = release_req->ch_type; |
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|
183 switch (dl_data->state[C_DCCH3]) |
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184 { |
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185 default: |
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186 bFree = FALSE; |
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|
187 break; |
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188 |
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189 case STATE_AWAITING_ESTABLISHMENT: |
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|
190 case STATE_MULTIPLE_FRAME_ESTABLISHED: |
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|
191 case STATE_TIMER_RECOVERY: |
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|
192 if (!dl_data->dcch3_disc_request AND (dl_data->cch[C_DCCH3].vtx EQ RR_CMD)) |
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|
193 { |
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|
194 dl_data->dcch3_disc_request = TRUE; |
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|
195 } |
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196 else |
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|
197 { |
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|
198 com_prepare_DISC (C_DCCH3, release_req->sapi); |
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|
199 } |
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|
200 break; |
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|
201 |
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|
202 case STATE_AWAITING_RELEASE: |
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|
203 dl_data->cch[C_DCCH3].T200_counter = 0; |
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|
204 break; |
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|
205 } |
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|
206 } |
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|
207 |
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|
208 if (bFree EQ FALSE) |
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|
209 { |
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|
210 PREUSE (release_req, release_cnf, DL_RELEASE_CNF); |
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|
211 release_cnf->indication = |
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|
212 com_queue_awaiting_transmission (PS_SAPI_3) ? DL_UNSERVED : DL_ALL_DONE; |
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|
213 PSENDX (RR, release_cnf); |
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|
214 dcch3_init_dl_data (); |
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|
215 } |
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|
216 |
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|
217 return bFree; |
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|
218 } |
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219 |
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|
220 |
fa8dc04885d8
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|
221 /* |
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|
222 +--------------------------------------------------------------------+ |
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223 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 | |
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224 | STATE : code ROUTINE : dcch3_mdl_release_req | |
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|
225 +--------------------------------------------------------------------+ |
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|
226 |
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|
227 PURPOSE : Release Request from Mobility Management for SDCCH (SAPI 3). |
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|
228 |
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|
229 */ |
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|
230 |
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|
231 GLOBAL void dcch3_mdl_release_req (void) |
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|
232 { |
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|
233 GET_INSTANCE_DATA; |
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|
234 TRACE_FUNCTION ("dcch3_mdl_release_req()"); |
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|
235 |
fa8dc04885d8
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Mychaela Falconia <falcon@freecalypso.org>
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236 DL_OFFLINE_TRACE (TRACE_DL_EVENT, C_DCCH3, dl_data->cch[C_DCCH3].ch_type, "mdl rel req"); |
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237 |
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238 switch (dl_data->state[C_DCCH3]) |
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239 { |
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240 case STATE_AWAITING_ESTABLISHMENT: |
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241 case STATE_TIMER_RECOVERY: |
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242 case STATE_AWAITING_RELEASE: |
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243 drr_dl_release_cnf (dl_data->cch[C_DCCH3].ch_type, PS_SAPI_3, TRUE); |
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244 break; |
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245 |
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246 case STATE_MULTIPLE_FRAME_ESTABLISHED: |
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247 drr_dl_release_ind (dl_data->cch[C_DCCH3].ch_type, PS_SAPI_3, NOT_PRESENT_8BIT, TRUE); |
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248 break; |
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249 |
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250 default: |
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251 break; |
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252 } |
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253 } |
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254 |
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255 /* |
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256 +--------------------------------------------------------------------+ |
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257 | PROJECT : GSM-PS (6147) MODULE : DL_DCCH3 | |
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258 | STATE : code ROUTINE : dcch3_data_req | |
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259 +--------------------------------------------------------------------+ |
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260 |
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261 PURPOSE : Data Request on SDCCH (SAPI 3). |
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262 |
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263 */ |
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264 |
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265 GLOBAL void dcch3_data_req (T_DL_DATA_REQ * data_req) |
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266 { |
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267 GET_INSTANCE_DATA; |
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268 TRACE_FUNCTION ("dcch3_data_req()"); |
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269 |
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270 switch (dl_data->state[C_DCCH3]) |
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271 { |
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272 case STATE_MULTIPLE_FRAME_ESTABLISHED: |
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273 case STATE_TIMER_RECOVERY: |
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274 com_store_queue (PS_SAPI_3, data_req); |
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275 break; |
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276 |
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277 default: |
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278 COM_FREE_POINTER (data_req); |
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279 break; |
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280 } |
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281 } |
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282 |
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283 /* |
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284 +--------------------------------------------------------------------+ |
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285 | PROJECT : GSM-PS (6147) MODULE : DL_SDCCH | |
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286 | STATE : code ROUTINE : dcch3_check_disc | |
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287 +--------------------------------------------------------------------+ |
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288 |
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289 PURPOSE : DISC command frame on DCCH3. |
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290 |
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291 */ |
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292 |
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293 GLOBAL int dcch3_check_disc (int send) |
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294 { |
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295 GET_INSTANCE_DATA; |
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296 TRACE_FUNCTION ("dcch3_check_disc()"); |
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297 |
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298 if (dl_data->dcch3_disc_request AND !(dl_data->cch[C_DCCH3].vtx EQ RR_CMD)) |
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299 { |
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300 com_prepare_DISC (C_DCCH3, PS_SAPI_3); |
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301 return uplink_awaiting_release (C_DCCH3, PS_SAPI_3); |
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302 } |
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303 else |
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304 return send; |
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305 } |
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306 #endif /* DL_DCCH3_C */ |
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307 |