FreeCalypso > hg > fc-tourmaline
view cdg-hybrid/sap/llgmm.pdf @ 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 | 35f7a1dc9f7d |
children |
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;******************************************************************************** ;*** File : llgmm.pdf ;*** Creation : Wed Mar 11 09:58:16 CST 2009 ;*** XSLT Processor : Apache Software Foundation / http://xml.apache.org/xalan-j / supports XSLT-Ver: 1 ;*** Copyright : (c) Texas Instruments AG, Berlin Germany 2002 ;******************************************************************************** ;*** Document Type : Service Access Point Specification ;*** Document Name : llgmm ;*** Document No. : 8441.103.99.014 ;*** Document Date : 2003-03-21 ;*** Document Status: BEING_PROCESSED ;*** Document Author: ANS ;******************************************************************************** PRAGMA SRC_FILE_TIME "Thu Nov 29 09:44:54 2007" PRAGMA LAST_MODIFIED "2003-03-21" PRAGMA ID_AND_VERSION "8441.103.99.014" CONST LLGMM_MAX_SEQ_NR 511 ; maximum sequence number value CONST LLGMM_NUM_SAPIS 16 ; number of SAPIs (not all are available) CONST LLGMM_TLLI_INVALID 0xFFFFFFFF ; invalid TLLI value VALTAB VAL_ciphering_algorithm VAL 0 LLGMM_CIPHER_NO_ALGORITHM "no ciphering algorithm" VAL 1 LLGMM_CIPHER_GPRS_A5_1 "GPRS A5/1 ciphering algorithm" VAL 2 LLGMM_CIPHER_GPRS_A5_2 "GPRS A5/2 ciphering algorithm" VAL 255 LLGMM_CIPHER_NA "value n/a" VALTAB VAL_trigger_cause VAL 1 LLGMM_TRICS_PAGE_RESPONSE "trigger was sent due to a received paging message" VAL 3 LLGMM_TRICS_CELL_UPDATE "trigger was sent because of a cell update" VAL 4 LLGMM_TRICS_CELL_UPDATE_NULL_FRAME %REL99% "LLC can use NULL frame for cell updates" VALTAB VAL_error_cause VAL 0 - 99 "reserved for GRR error causes" VAL DEF "invalid error cause" VAL 0b1101000001100100 LLGMM_ERRCS_INVALID_UA "invalid UA response" VAL 0b1101000001100101 LLGMM_ERRCS_SABM_INVALID_XID "invalid XID response during connection establishment" VAL 0b1101000001100110 LLGMM_ERRCS_SABM_NO_PEER_RES "no peer response during connection establishment" VAL 0b1101000001100111 LLGMM_ERRCS_XID_INVALID_XID "invalid XID response during parameter negotiation" VAL 0b1101000001101000 LLGMM_ERRCS_XID_NO_PEER_RES "no peer response during parameter negotiation" VAL 0b1101000001101001 LLGMM_ERRCS_DISC_NO_PEER_RES "no peer response during release of connection" VAL 0b1101000001101010 LLGMM_ERRCS_MULT_ASS_TLLI "possible multiple assignment of a TLLI value" VAL 0b1101000001101011 LLGMM_ERRCS_DM1_RECEIVED "unsolicited DM response with F bit 1 in state ABM" VAL 0b1101000001101100 LLGMM_ERRCS_DM1_RECEIVED_REEST "unsolicited DM response with F bit 1 in state Timer Recovery; re-establishment procedure initiated" VAL 0b1101000001101101 LLGMM_ERRCS_ACK_NO_PEER_RES_REEST "no peer response during waiting for acknowledgement; re-establishment procedure initiated" VAL 0b1101000001101110 LLGMM_ERRCS_PEER_BUSY_REEST "peer receiver busy condition; re-establishment procedure initiated" VAL 0b1101000001101111 LLGMM_ERRCS_FRMR_COND "frame rejection condition; frame discarded" VAL 0b1101000001110000 LLGMM_ERRCS_FRMR_COND_REEST "frame rejection condition; re-establishment procedure initiated" VAL 0b1101000001110001 LLGMM_ERRCS_FRMR_RECEIVED "FRMR response received; frame discarded" VAL 0b1101000001110010 LLGMM_ERRCS_L3_REEST "layer 3 initiated re-establishment procedure" VAL 0b1101000001110011 LLGMM_ERRCS_PEER_REEST "peer initiated re-establishment procedure" VAL 0b1101000001110100 LLGMM_ERRCS_DM0_RECEIVED_REEST "unsolicited DM response with F bit 0; re-establishment procedure initiated" VALTAB VAL_susp_cause VAL DEF "suspension because of Attach or RAU" VAL 0 LLGMM_RAU "suspension because of Attach or RAU, GRR has to be suspended" VAL 1 LLGMM_CALL "suspension because of GSM establishment request" VAL 2 LLGMM_LIMITED "suspension because of limited service" VAL 3 LLGMM_PERIODIC_RAU "suspension because of periodic RAU" VAL 4 LLGMM_NO_GPRS_SERVICE "suspension because of no service or no GPRS supported" VAR old_tlli "old temporary logical link identifier" L VAR new_tlli "new temporary logical link identifier" L VAR key "ciphering key content" B VAR ciphering_algorithm "ciphering algorithm" B VAL @p_llgmm - VAL_ciphering_algorithm@ VAR trigger_cause "cause of the trigger primitive" B VAL @p_llgmm - VAL_trigger_cause@ VAR error_cause "error cause" S VAL @p_llgmm - VAL_error_cause@ VAR susp_cause "suspension cause" B VAL @p_llgmm - VAL_susp_cause@ COMP llgmm_kc "GPRS ciphering key" { key [8] ; ciphering key content } ; LLGMM_ASSIGN_REQ 0x2100 ; LLGMM_TRIGGER_REQ 0x2101 ; LLGMM_SUSPEND_REQ 0x2102 ; LLGMM_RESUME_REQ 0x2103 ; LLGMM_STATUS_IND 0x6100 ; LLGMM_TLLI_IND 0x6101 PRIM LLGMM_ASSIGN_REQ 0x2100 { old_tlli ; old temporary logical link entity new_tlli ; new temporary logical link entity llgmm_kc ; ciphering key ciphering_algorithm ; ciphering algorithm } PRIM LLGMM_TRIGGER_REQ 0x2101 { trigger_cause ; trigger cause } PRIM LLGMM_SUSPEND_REQ 0x2102 { susp_cause ; suspension cause } PRIM LLGMM_RESUME_REQ 0x2103 { } PRIM LLGMM_STATUS_IND 0x6100 { error_cause ; error cause } PRIM LLGMM_TLLI_IND 0x6101 { new_tlli ; Newly received TLLI }