FreeCalypso > hg > fc-tourmaline
view src/g23m-gsm/sim/sim_gprs.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> |
---|---|
date | Thu, 08 Jun 2023 08:23:37 +0000 |
parents | fa8dc04885d8 |
children |
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/* +----------------------------------------------------------------------------- | Project : GSM-F&D (8411) | Modul : SIM_GPRS +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : This modul defines the GPRS Upgrade. +----------------------------------------------------------------------------- */ #ifndef SIM_GPRS_C #define SIM_GPRS_C #define ENTITY_SIM /*==== INCLUDES ===================================================*/ #include <string.h> #include "typedefs.h" #include "pcm.h" #include "pconst.cdg" #include "message.h" #include "ccdapi.h" #include "vsi.h" #include "custom.h" #include "gsm.h" #include "cnf_sim.h" #include "mon_sim.h" #include "prim.h" #include "pei.h" #include "tok.h" #include "sim.h" /*==== EXPORT =====================================================*/ /*==== PRIVAT =====================================================*/ /*==== TYPES ======================================================*/ /*==== CONSTANTS ==================================================*/ /*==== VARIABLES ==================================================*/ /*==== FUNCTIONS ==================================================*/ /* +--------------------------------------------------------------------+ | PROJECT : GSM-PS (8419) MODULE : SIM_GPRS | | STATE : code ROUTINE : gprs_check_pcm_data | +--------------------------------------------------------------------+ PURPOSE : Checks the validation of GPRS data stored in PCM. */ GLOBAL BOOL gprs_check_pcm_data (T_imsi_field *sim_imsi) { EF_IMSIGPRS imsi; UBYTE version; return pcm_ReadFile((UBYTE *)EF_IMSIGPRS_ID, SIZE_EF_IMSIGPRS, (UBYTE *)&imsi, &version) EQ PCM_OK AND (sim_imsi->c_field EQ imsi.len) AND !memcmp(imsi.IMSI, sim_imsi->field, sim_imsi->c_field); } /* +--------------------------------------------------------------------+ | PROJECT : GSM-PS (8419) MODULE : SIM_GPRS | | STATE : code ROUTINE : gprs_gmm_insert_ind | +--------------------------------------------------------------------+ PURPOSE : Collects the initial data for GMM. */ GLOBAL void gprs_gmm_insert_ind (T_SIM_MM_INSERT_IND * sim_mm_insert_ind) { UBYTE kc_n[MAX_KC_N]; int i; /* * Read Parameters for GPRS mobility management */ PALLOC (sim_gmm_insert_ind, SIM_GMM_INSERT_IND); TRACE_FUNCTION ("gprs_sim_gmm_insert_ind()"); /* * administrative data */ sim_gmm_insert_ind->op_mode = sim_mm_insert_ind->ad[0]; /* * IMSI */ memcpy (&sim_gmm_insert_ind->imsi_field, &sim_mm_insert_ind->imsi_field, sizeof (T_imsi_field)); /* * Location Information */ memcpy (&sim_gmm_insert_ind->loc_info, &sim_mm_insert_ind->loc_info, sizeof (T_loc_info)); /* * access control classes */ memcpy (&sim_gmm_insert_ind->acc_ctrl, &sim_mm_insert_ind->acc_ctrl, sizeof (T_acc_ctrl)); /* * phase */ sim_gmm_insert_ind->phase = sim_data.sim_phase; if (SIM_IS_FLAG_SET (SERVICE_38_SUPPORT)) { /* * SIM card supports GPRS * * Read GPRS Location Information */ TRACE_EVENT ("SIM supports GPRS"); if (FKT_Select (SIM_LOCGPRS, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR) { sim_gmm_insert_ind->gprs_loc_info.c_loc = MAX_LOCIGPRS; if (FKT_ReadBinary ((UBYTE *)&sim_gmm_insert_ind->gprs_loc_info.loc, 0, MAX_LOCIGPRS) NEQ SIM_NO_ERROR) { PFREE (sim_gmm_insert_ind); return; } } /* * Read GPRS KC */ if (FKT_Select (SIM_KCGPRS, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR) { if (FKT_ReadBinary ((UBYTE *)kc_n, 0, MAX_KC_N) NEQ SIM_NO_ERROR) { PFREE (sim_gmm_insert_ind); return; } else { sim_gmm_insert_ind->kc_n.c_kc = MAX_KC_N; /* * Store KC in opposite order */ for (i = 0; i < MAX_KC; i++) sim_gmm_insert_ind->kc_n.kc[(MAX_KC-1)-i] = kc_n[i]; /* * Store cipher key sequence number */ sim_gmm_insert_ind->kc_n.kc[MAX_KC] = kc_n[MAX_KC]; } } } else { /* * Use PCM instead */ TRACE_EVENT ("SIM does not support GPRS"); /* * Only use ME data, when it is marked with IMSI * Note : No storage of the changed IMSI here! */ if (gprs_check_pcm_data (&sim_mm_insert_ind->imsi_field)) { UBYTE version; /* * then read the fields */ pcm_ReadFile((UBYTE *) EF_LOCGPRS_ID,SIZE_EF_LOCGPRS, (UBYTE *) &sim_gmm_insert_ind->gprs_loc_info.loc, &version); sim_gmm_insert_ind->gprs_loc_info.c_loc = MAX_LOCIGPRS; pcm_ReadFile((UBYTE *) EF_KCGPRS_ID,SIZE_EF_KCGPRS, (UBYTE *) &sim_gmm_insert_ind->kc_n, &version); } else { /* * reading of IMSI failed, set values to defaults */ memset (&sim_gmm_insert_ind->gprs_loc_info.loc, 0xFF, MAX_LOCIGPRS); sim_gmm_insert_ind->gprs_loc_info.loc[11] = 0xFE; sim_gmm_insert_ind->gprs_loc_info.c_loc = 0; memset (&sim_gmm_insert_ind->kc_n, 0xFF, 9); } } /* * send information to GPRS mobility management */ PSENDX (GMM, sim_gmm_insert_ind); } /* +--------------------------------------------------------------------+ | PROJECT : GSM-PS (6302) MODULE : SIM_GPRS | | STATE : code ROUTINE : gprs_gmm_update_req | +--------------------------------------------------------------------+ PURPOSE : Process of the primitive SIM_GMM_UPDATE_REQ. */ GLOBAL void gprs_sim_gmm_update_req (T_SIM_GMM_UPDATE_REQ * sim_gmm_update_req) { int i; T_kc_n kc_n; TRACE_FUNCTION ("gprs_sim_gmm_update_req()"); /* * prepare kc and cksn for storing */ kc_n.c_kc = MAX_KC_N; kc_n.kc[MAX_KC] = sim_gmm_update_req->cksn; for (i = 0; i < MAX_KC; i++) kc_n.kc[(MAX_KC-1)-i] = sim_gmm_update_req->kc[i]; /* * SIM with GPRS service activated? */ if (SIM_IS_FLAG_SET (SERVICE_38_SUPPORT)) { /* * check location information */ if (sim_gmm_update_req->gprs_loc_info.c_loc > 0) { if (FKT_Select (SIM_LOCGPRS, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR) FKT_UpdateBinary (sim_gmm_update_req->gprs_loc_info.loc, MAX_LOCIGPRS, 0); } /* * store kc and cksn */ if (FKT_Select (SIM_KCGPRS, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR) { FKT_UpdateBinary (kc_n.kc, kc_n.c_kc, 0); } } else { /* * SIM with no GPRS service: store in ME memory */ T_imsi_field sim_imsi; if (FKT_Select (SIM_IMSI, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR AND FKT_ReadBinary ((UBYTE *)&sim_imsi, 0, MAX_IMSI) EQ SIM_NO_ERROR) { /* * Compare IMSI on SIM with IMSI in ME memory */ if (!gprs_check_pcm_data (&sim_imsi)) { /* * Check GPRS attach status of current IMSI (from SIM) */ if (sim_gmm_update_req->att_status) /* * Update IMSI in ME memory, when attached */ pcm_WriteFile((UBYTE *)EF_IMSIGPRS_ID, SIZE_EF_IMSIGPRS, (UBYTE *)&sim_imsi); else { /* * do not update GPRS data */ PFREE (sim_gmm_update_req); return; } } /* * Update GPRS data in ME memory */ if (sim_gmm_update_req->gprs_loc_info.c_loc > 0) { pcm_WriteFile((UBYTE *)EF_LOCGPRS_ID,SIZE_EF_LOCGPRS, (UBYTE *)&sim_gmm_update_req->gprs_loc_info.loc); } pcm_WriteFile((UBYTE *)EF_KCGPRS_ID,SIZE_EF_KCGPRS, (UBYTE *)kc_n.kc); } } PFREE (sim_gmm_update_req); } #endif