FreeCalypso > hg > fc-tourmaline

annotate src/g23m-gprs/llc/llc_itxt.c @ 303:f76436d19a7a default tip

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!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>
date Thu, 08 Jun 2023 08:23:37 +0000
parents fa8dc04885d8
children
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1
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project :
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4 | Modul :
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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 is part of the entity LLC and implements all
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18 | functions to handles the incoming primitives as described in
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19 | the SDL-documentation (T201-statemachine)
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20 +-----------------------------------------------------------------------------
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21 */
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22
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23 #ifndef LLC_ITXT_C
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24 #define LLC_ITXT_C
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25 #endif
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26
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27 #define ENTITY_LLC
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28
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29 /*==== INCLUDES =============================================================*/
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30
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31 #include "typedefs.h" /* to get Condat data types */
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32 #include "vsi.h" /* to get a lot of macros */
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33 #include "macdef.h"
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34 #include "gprs.h"
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35 #include "gsm.h" /* to get a lot of macros */
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36 #include "cnf_llc.h" /* to get cnf-definitions */
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37 #include "mon_llc.h" /* to get mon-definitions */
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38 #include "prim.h" /* to get the definitions of used SAP and directions */
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39 #include "llc.h" /* to get the global entity definitions */
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40
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41 #include "llc_itxf.h" /* to get local function definitions */
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42 #include "llc_llmes.h" /* to get LLME signal definitions */
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43 #include "llc_irxs.h" /* to get ITX signal definitions */
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44
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45
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46 /*==== CONST ================================================================*/
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47
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48 /*==== LOCAL VARS ===========================================================*/
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49
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50 /*==== PRIVATE FUNCTIONS ====================================================*/
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51
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52 /*==== PUBLIC FUNCTIONS =====================================================*/
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53
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54
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55 /*
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56 +------------------------------------------------------------------------------
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57 | Function : itx_T201_start
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58 +------------------------------------------------------------------------------
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59 | Description : This procedure starts timer T201 for the current SAPI.
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60 |
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61 | Parameters :
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62 +------------------------------------------------------------------------------
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63 */
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64 GLOBAL void itx_T201_start (T_TIME length)
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65 {
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66 TRACE_FUNCTION( "itx_T201_start" );
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67
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68 /*
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69 * Start timer T201 for the current SAPI.
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70 */
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71 #ifdef _SIMULATION_
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72 /*
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73 * In simulation mode, use always a timer value of 5 seconds.
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74 */
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75 vsi_t_start (VSI_CALLER
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76 (USHORT)(TIMER_T201_BASE + IMAP(llc_data->current_sapi)), 5000);
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77 #else
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78 vsi_t_start (VSI_CALLER
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79 (USHORT)(TIMER_T201_BASE + IMAP(llc_data->current_sapi)), length);
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80 #endif /* _SIMULATION_ */
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81
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82 return;
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83 } /* itx_T201_start() */
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84
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85
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86 /*
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87 +------------------------------------------------------------------------------
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88 | Function : itx_T201_stop
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89 +------------------------------------------------------------------------------
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90 | Description : This procedure stops timer T201 for the current SAPI.
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91 |
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92 | Parameters :
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93 +------------------------------------------------------------------------------
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94 */
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95 GLOBAL void itx_T201_stop (void)
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96 {
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97 TRACE_FUNCTION( "itx_T201_stop" );
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98
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99 /*
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100 * Stops timer T201 for the current SAPI.
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101 */
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102 vsi_t_stop (VSI_CALLER
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103 (USHORT)(TIMER_T201_BASE + IMAP(llc_data->current_sapi)));
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104
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105 return;
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106 } /* itx_T201_stop() */
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107
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108
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109
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110 /*
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111 +------------------------------------------------------------------------------
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112 | Function : itx_timer_t201
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113 +------------------------------------------------------------------------------
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114 | Description : Handles expiry of timer T201. This function is called from
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115 | pei_timeout().
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116 |
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117 | Parameters : sapi - indicates the SAPI for which the timer has expired
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118 |
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119 +------------------------------------------------------------------------------
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120 */
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121 GLOBAL void itx_timer_t201 (UBYTE sapi)
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122 {
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123 TRACE_FUNCTION( "itx_timer_t201" );
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124
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125 TRACE_0_INFO("T201 EXPIRED" );
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126
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127 SWITCH_LLC (sapi);
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128
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129 switch (GET_STATE(ITX))
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130 {
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131 case ITX_ABM:
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132 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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133 * If a frame is associated with T201, increment the
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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134 * retransmission counter and if below N200, restart
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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135 * T201. Else initate the ABM-Re-Establish procedure.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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136 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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137 if ( llc_data->itx->t201_entry != NULL)
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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138 {
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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139 llc_data->itx->t201_entry->status = IQ_RETR_FRAME;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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140
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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141 if ( llc_data->itx->t201_entry->n_retr <= *(llc_data->n200) )
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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142 {
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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143 TIMERSTART (T201, llc_data->t200->length);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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144 itx_send_next_frame (ABIT_SET_REQ);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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145 }
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 else
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 {
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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148 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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149 * Initate ABM Re-Establish procedure. The state change
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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150 * will be done by the reestablish procedure later.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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151 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 sig_itx_llme_reest_ind (LLGMM_ERRCS_ACK_NO_PEER_RES_REEST);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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153 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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154 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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155 /* SET_STATE (ITX, SAME_STATE); */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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156 break;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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157
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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158 case ITX_ABM_PEER_BUSY:
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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159 /*
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 * If the Peer busy retransmission counter is below N200
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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161 * restart T201 and send an appropriated S frame. Else
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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162 * initate the ABM-Re-Establish procedure.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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163 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 if ( llc_data->itx->n_pb_retr < *(llc_data->n200) )
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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165 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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166 TIMERSTART (T201, llc_data->t200->length);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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167 sig_itx_irx_s_frame_req (ABIT_SET_REQ);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 llc_data->itx->n_pb_retr += 1;
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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169 }
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 else
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 {
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 sig_itx_llme_reest_ind (LLGMM_ERRCS_PEER_BUSY_REEST);
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 }
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 /* SET_STATE (ITX, SAME_STATE); */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 break;
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 default:
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 TRACE_ERROR( "T201 unexpected" );
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 break;
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 }
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181
fa8dc04885d8 src/g23m-*: import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 } /* itx_timer_t201() */