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annotate src/g23m-gprs/sndcp/sndcp_pds.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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2 +-----------------------------------------------------------------------------
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3 | Project : GPRS (8441)
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4 | Modul : sndcp_pds.c
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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 SNDCP and implements all
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18 | functions to handles the incoming process internal signals as
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19 | described in the SDL-documentation (PD-statemachine)
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20 +-----------------------------------------------------------------------------
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21 */
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22
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24 #define ENTITY_SNDCP
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25
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26 /*==== INCLUDES =============================================================*/
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27
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28 #include "typedefs.h" /* to get Condat data types */
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29 #include "vsi.h" /* to get a lot of macros */
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30 #include "macdef.h"
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31 #include "gsm.h" /* to get a lot of macros */
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32 #include "prim.h" /* to get the definitions of used SAP and directions */
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33
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34 #include "dti.h"
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35
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36 #include "sndcp.h" /* to get the global entity definitions */
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37 #include "sndcp_f.h" /* to get the functions to access the global arrays*/
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38
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39 /*==== CONST ================================================================*/
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40
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41 /*==== LOCAL VARS ===========================================================*/
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42
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43 /*==== PRIVATE FUNCTIONS ====================================================*/
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44
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45 /*==== PUBLIC FUNCTIONS =====================================================*/
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46
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47
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48
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49 /*
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50 +------------------------------------------------------------------------------
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51 | Function : sig_sd_pd_getunitdata_req
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52 +------------------------------------------------------------------------------
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53 | Description : Handles the internal signal SIG_SD_PD_GETUNITDATA_REQ
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54 |
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55 | Parameters : the affected sapi.
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56 |
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57 +------------------------------------------------------------------------------
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58 */
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59 GLOBAL void sig_sd_pd_getunitdata_req (UBYTE sapi)
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60 {
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61 UBYTE sapi_index = 0;
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62
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63 TRACE_ISIG( "sig_sd_pd_getunitdata_req" );
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64
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65 /*
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66 * set service instance according to sapi in primitive
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67 */
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68 sndcp_get_sapi_index(sapi, &sapi_index);
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69 sndcp_data->pd = & sndcp_data->pd_base[sapi_index];
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70
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71 switch( GET_STATE( PD ) )
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72 {
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73 case PD_DEFAULT:
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74 {
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75 PALLOC(ll_getunitdata_req, LL_GETUNITDATA_REQ);
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76
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77 ll_getunitdata_req->sapi = sapi;
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78 /*
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79 * TLLI is not evaluated by LLC.
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80 */
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81 #ifdef FLOW_TRACE
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82 sndcp_trace_flow_control(FLOW_TRACE_SNDCP,
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83 FLOW_TRACE_DOWN,
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84 FLOW_TRACE_BOTTOM,
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85 TRUE);
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86 #endif
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87 PSEND(hCommLLC, ll_getunitdata_req);
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88 }
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89 break;
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90 default:
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91 TRACE_ERROR( "SIG_SD_PD_GETUNITDATA_REQ unexpected" );
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92 break;
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93 }
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94 } /* sig_sd_pd_getunitdata_req() */
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95
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96