FreeCalypso > hg > fc-tourmaline
annotate src/g23m-gprs/llc/llc_uirxp.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 : |
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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 (UIRX-statemachine) |
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20 +----------------------------------------------------------------------------- |
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21 */ |
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22 |
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23 #ifndef LLC_UIRXP_C |
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24 #define LLC_UIRXP_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_uirxf.h" /* to get queue management prototypes */ |
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42 /*==== CONST ================================================================*/ |
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43 |
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44 /*==== LOCAL VARS ===========================================================*/ |
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45 |
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46 /*==== PRIVATE FUNCTIONS ====================================================*/ |
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47 |
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48 /*==== PUBLIC FUNCTIONS =====================================================*/ |
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49 |
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50 |
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51 |
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52 /* |
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53 +------------------------------------------------------------------------------ |
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54 | Function : uirx_ll_getunitdata_req |
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55 +------------------------------------------------------------------------------ |
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56 | Description : Handles the primitive LL_GETUNITDATA_REQ |
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57 | |
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58 | Parameters : *ll_getunitdata_req - Ptr to primitive payload |
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59 | |
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60 +------------------------------------------------------------------------------ |
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61 */ |
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62 GLOBAL void uirx_ll_getunitdata_req ( T_LL_GETUNITDATA_REQ *ll_getunitdata_req ) |
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63 { |
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64 T_LL_UNITDATA_IND *ll_unitdata_ind; |
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65 |
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66 TRACE_FUNCTION( "ll_getunitdata_req" ); |
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67 |
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68 SWITCH_LLC (ll_getunitdata_req->sapi); |
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69 |
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70 TRACE_1_PARA("s:%d", ll_getunitdata_req->sapi ); |
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71 |
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72 switch (GET_STATE(UIRX)) |
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73 { |
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74 case UIRX_TLLI_UNASSIGNED_NOT_READY: |
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75 PFREE (ll_getunitdata_req); |
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76 SET_STATE (UIRX, UIRX_TLLI_UNASSIGNED_READY); |
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77 break; |
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78 |
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79 case UIRX_ADM_NOT_READY: |
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80 PFREE (ll_getunitdata_req); |
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81 |
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82 /* |
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83 * First check, if already a frame is waiting. |
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84 */ |
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85 if (uirx_queue_retrieve (&ll_unitdata_ind)) |
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86 { |
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87 /* |
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88 * A frame is waiting. Send primitive LL-UNITDATA-IND |
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89 * to either SNDCP or GSMS, depending on the SAPI (GMM |
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90 * uses now flow control!). |
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91 */ |
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92 switch (ll_unitdata_ind->sapi) |
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93 { |
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94 case LL_SAPI_3: |
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95 case LL_SAPI_5: |
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96 case LL_SAPI_9: |
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97 case LL_SAPI_11: |
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98 TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi, |
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99 BYTELEN(ll_unitdata_ind->sdu.l_buf), |
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100 ll_unitdata_ind->cipher); |
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101 PSEND (hCommSNDCP, ll_unitdata_ind); |
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102 break; |
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103 |
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104 case LL_SAPI_7: |
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105 #ifdef LL_2to1 |
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106 TRACE_PRIM_TO("MM"); |
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107 TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi, |
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108 BYTELEN(ll_unitdata_ind->sdu.l_buf), |
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109 ll_unitdata_ind->cipher); |
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110 PSEND (hCommMM, ll_unitdata_ind); |
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111 break; |
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112 #else |
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113 TRACE_PRIM_TO("GSMS"); |
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114 TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi, |
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115 BYTELEN(ll_unitdata_ind->sdu.l_buf), |
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116 ll_unitdata_ind->cipher); |
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117 PSEND (hCommGSMS, ll_unitdata_ind); |
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118 break; |
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119 #endif |
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120 |
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121 default: |
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122 PFREE (ll_unitdata_ind); |
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123 TRACE_ERROR ("Invalid SAPI value"); |
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124 break; |
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125 } |
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126 } |
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127 else |
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128 { |
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129 /* |
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130 * No frame is waiting. Allow straight forwarding |
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131 * of the next received frame. |
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132 */ |
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133 SET_STATE (UIRX, UIRX_ADM_READY); |
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134 } |
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135 break; |
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136 |
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137 default: |
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138 PFREE (ll_getunitdata_req); |
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139 TRACE_ERROR( "LL_GETUNITDATA_REQ unexpected" ); |
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140 break; |
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141 } |
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142 |
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143 } /* uirx_ll_getunitdata_req() */ |