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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 35f7a1dc9f7d
children
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;********************************************************************************
;*** File           : gmmrr.pdf
;*** Creation       : Wed Mar 11 09:58:05 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  : gmmrr
;*** Document No.   : 8441.101.03.025
;*** Document Date  : 2003-09-02
;*** Document Status: BEING_PROCESSED
;*** Document Author: SAB
;********************************************************************************



PRAGMA 	SRC_FILE_TIME 	"Thu Nov 29 09:42:28 2007"
PRAGMA 	LAST_MODIFIED 	"2003-09-02"
PRAGMA 	ID_AND_VERSION 	"8441.101.03.025"



CONST 	MAX_DIGITS 	16 	; 
CONST 	SIZE_MCC 	3 	; maximum number of BCD digits of the mobile country code
CONST 	SIZE_MNC 	3 	; maximum number of BCD digits of the mobile network code



VALTAB 	VAL_old_tlli
VAL 	0xFFFFFFFF 	GMMRR_TLLI_INVALID 	"TLLI invalid (see GSM 3.03)"

VALTAB 	VAL_service_state
VAL 	0 	GMMRR_SERVICE_NONE 	"No service"
VAL 	1 	GMMRR_SERVICE_LIMITED 	"Limited service"
VAL 	2 	GMMRR_SERVICE_FULL 	"Full service"
VAL 	3 	GMMRR_SERVICE_UNKNOWN 	"Service unknown"

VALTAB 	VAL_net_mode
VAL 	0 	GMMRR_NET_MODE_I 	"Network operation mode I, only one Paging channel for both: PCCCH or  CCCH"
VAL 	1 	GMMRR_NET_MODE_II 	"Network operation mode II, Paging only on CCCH"
VAL 	2 	GMMRR_NET_MODE_III 	"Network operation mode III, Paging on CCCH for CS and either on CCCH or on PCCCH for GPRS, if PCCH allocated in the cell"

VALTAB 	VAL_standby_cause
VAL 	1 	GMMRR_TIMEOUT_OF_T3314 	"GMM enters state STANDBY because of timeout of READY timer T3314"
VAL 	2 	GMMRR_RESET_OF_T3314 	"GMM enters state STANDBY because GMM receives a message witrh timer_value 0"
VAL 	3 	GMMRR_FORCE_TO_STANDBY 	"GMM receives a message indicating FORCE TO STANDBY"

VALTAB 	VAL_old_ptmsi
VAL 	0xFFFFFFFF 	GMMRR_TMSI_INVALID 	"P-TMSI or TMSI invalid (see GSM 3.03)"

VALTAB 	VAL_v_mid
VAL 	0 	V_MID_NOT_PRES 	"not present"
VAL 	1 	V_MID_PRES 	"present"

VALTAB 	VAL_id_type
VAL 	0 	TYPE_NO_ID 	"no identity"
VAL 	1 	TYPE_IMSI 	"IMSI"
VAL 	4 	TYPE_TMSI 	"TMSI"

VALTAB 	VAL_response
VAL 	DEF 	 	"The call is confirmed"
VAL 	0 	GMMRR_CS_PAGE_REJ 	"The call is rejected"
VAL 	1 	GMMRR_CS_PAGE_CNF 	"The call is confirmed"

VALTAB 	VAL_page_id
VAL 	DEF 	 	"P-TMSI"
VAL 	0 	GMMRR_IMSI 	"IMSI"
VAL 	1 	GMMRR_PTMSI 	"P-TMSI"

VALTAB 	VAL_mobile_class
VAL 	DEF 	 	"Combined GPRS attach"
VAL 	1 	GMMRR_CLASS_A 	"Combined GPRS"
VAL 	2 	GMMRR_CLASS_B 	"GPRS and GSM"
VAL 	3 	GMMRR_CLASS_BC 	"Combined GPRS if possible, otherwise GSM only"
VAL 	4 	GMMRR_CLASS_BG 	"Combined GPRS if possible, otherwise GPRS only"
VAL 	5 	GMMRR_CLASS_CC 	"reserved. (GSM-only)"
VAL 	6 	GMMRR_CLASS_CG 	"GPRS-only"

VALTAB 	VAL_susp_gprs
VAL 	DEF 	 	"Suspend GPRS"
VAL 	0 	GMMRR_NOT_SUSP_GPRS 	"Do not suspend GPRS"
VAL 	1 	GMMRR_SUSP_GPRS 	"Suspend GPRS"

VALTAB 	VAL_split_pg_cycle
VAL 	704 	GMMRR_NO_DRX 	"Non DRX mode"

VALTAB 	VAL_lac
VAL 	DEF 	 	"lac"
VAL 	0xFFFE 	GMMRR_LA_INVALID 	"la invalid"

VALTAB 	VAL_rac
VAL 	0xFF 	GMMRR_RAC_INVALID 	"routing area code invalid"

VALTAB 	VAL_gmmrr_non_drx_timer
VAL 	0 	DRX_NO 	"no non-DRX mode after transfer state"
VAL 	1 	DRX_1_SEC 	"max. 1 sec non-DRX mode after transfer"
VAL 	2 	DRX_2_SEC 	"max. 2 sec non-DRX mode after transfer"
VAL 	3 	DRX_4_SEC 	"max. 4 sec non-DRX mode after transfer"
VAL 	4 	DRX_8_SEC 	"max. 8 sec non-DRX mode after transfer"
VAL 	5 	DRX_16_SEC 	"max. 16 sec non-DRX mode after transfer"
VAL 	6 	DRX_32_SEC 	"max. 32 sec non-DRX mode after transfer"
VAL 	7 	DRX_64_SEC 	"max. 64 sec non-DRX mode after transfer"

VALTAB 	VAL_gmmrr_susp_cause
VAL 	0 	GMMRR_ABNORMAL_RELEASE 	"GRR should release immediately the running TBF"
VAL 	1 	GMMRR_NORMAL_RELEASE 	"GRR should wait until TBF is released"

VALTAB 	VAL_spgc_ccch_supp
VAL 	0 	GMMRR_SPGC_CCCH_SUPP_NO 	"Split paging cycle on CCCH is not supported by the mobile station"
VAL 	1 	GMMRR_SPGC_CCCH_SUPP_YES 	"Split paging cycle on CCCH is supported by the mobile station"

VALTAB 	VAL_cu_cause
VAL 	0 	GMMRR_RA_DEFAULT 	"GRR should not perform Cell Update Access"
VAL 	1 	GMMRR_RA_CU 	"GRR should perforn Random Access with cause Cell Update"

VALTAB 	VAL_rt
VAL 	0 	RT_GSM 	"GSM"
VAL 	1 	RT_GPRS 	"GSM/GPRS"
VAL 	2 	RT_EDGE 	"GSM/GPRS/EDGE"
VAL 	3 	RT_UMTS_FDD 	"UMTS FDD"




VAR 	old_tlli 	"old temporary logical link identifier" 	L

VAL 	@p_gmmrr - VAL_old_tlli@ 	

VAR 	new_tlli 	"new temporary logical link identifier" 	L

VAL 	@p_gmmrr - VAL_old_tlli@ 	

VAR 	service_state 	"Service state" 	B

VAL 	@p_gmmrr - VAL_service_state@ 	

VAR 	net_mode 	"Network operation mode" 	B

VAL 	@p_gmmrr - VAL_net_mode@ 	

VAR 	standby_cause 	"standby cause" 	B

VAL 	@p_gmmrr - VAL_standby_cause@ 	

VAR 	old_ptmsi 	"old ptmsi" 	L

VAL 	@p_gmmrr - VAL_old_ptmsi@ 	

VAR 	new_ptmsi 	"new ptmsi" 	L

VAL 	@p_gmmrr - VAL_old_ptmsi@ 	

VAR 	v_mid 	"valid flag" 	B

VAL 	@p_gmmrr - VAL_v_mid@ 	

VAR 	id_type 	"type of identity" 	B

VAL 	@p_gmmrr - VAL_id_type@ 	

VAR 	id 	"IMSI digits" 	B


VAR 	tmsi_dig 	"TMSI digits" 	L


VAR 	response 	"CS Paging respnonse" 	B

VAL 	@p_gmmrr - VAL_response@ 	

VAR 	page_id 	"Page ID" 	B

VAL 	@p_gmmrr - VAL_page_id@ 	

VAR 	mobile_class 	"Mobile Class" 	B

VAL 	@p_gmmrr - VAL_mobile_class@ 	

VAR 	acc_contr_class 	"Access Control Class" 	S


VAR 	susp_gprs 	"suspend GPRS" 	B

VAL 	@p_gmmrr - VAL_susp_gprs@ 	

VAR 	split_pg_cycle 	"Split paging cycle (the value, NOT the code)" 	S

VAL 	@p_gmmrr - VAL_split_pg_cycle@ 	

VAR 	lac 	"location area code" 	S

VAL 	@p_gmmrr - VAL_lac@ 	

VAR 	rac 	"routing area code" 	B

VAL 	@p_gmmrr - VAL_rac@ 	

VAR 	gmmrr_non_drx_timer 	"non-DRX timer" 	B

VAL 	@p_gmmrr - VAL_gmmrr_non_drx_timer@ 	

VAR 	gmmrr_susp_cause 	"suspension cause" 	B

VAL 	@p_gmmrr - VAL_gmmrr_susp_cause@ 	

VAR 	spgc_ccch_supp 	"Split paging cycle support on CCCH" 	B

VAL 	@p_gmmrr - VAL_spgc_ccch_supp@ 	

VAR 	cid 	"cell identification" 	S


VAR 	v_plmn 	"Valid Flag" 	B


VAR 	mcc 	"Mobile Country Code" 	B


VAR 	mnc 	"Mobile Network Code" 	B


VAR 	cu_cause 	"Cell Update Cause" 	B

VAL 	@p_gmmrr - VAL_cu_cause@ 	

VAR 	rt 	"This parameter indicates the radio access technology available in the cell. " 	B

VAL 	@p_gmmrr - VAL_rt@ 	




COMP 	imsi 	 "mobile identity"
{
 	v_mid 	 ; valid flag
 	id_type 	 ; type of identity
 	id 	[MAX_DIGITS] 	 ; IMSI digits
 	tmsi_dig 	 ; TMSI digits
}



COMP 	plmn 	 "PLMN identification"
{
 	v_plmn 	 ; Valid Flag
 	mcc 	[SIZE_MCC] 	 ; Mobile Country Code
 	mnc 	[SIZE_MNC] 	 ; Mobile Network Code
}



COMP 	rai 	 "routing area identifier"
{
 	plmn 	 ; PLMN
 	lac 	 ; Location Area Code
 	rac 	 ; Routing Area Code
}



COMP 	cell_env 	 "current location of the mobile equipment"
{
 	rai 	 ; Routing Area Identifier
 	cid 	 ; Cell Identification
}



COMP 	cell_info 	 "Cell information"
{
 	cell_env 	 ; Cell Environment
 	service_state 	 ; Service state
 	net_mode 	 ; Network operation mode
 	rt 	 ; RAT supported in cell
}






; GMMRR_ASSIGN_REQ 	0x1F00
; GMMRR_ENABLE_REQ 	0x1F01
; GMMRR_DISABLE_REQ 	0x1F02
; GMMRR_CELL_IND 	0x5F00
; GMMRR_READY_REQ 	0x1F03
; GMMRR_STANDBY_REQ 	0x1F04
; GMMRR_PAGE_IND 	0x5F02
; GMMRR_CS_PAGE_IND 	0x5F03
; GMMRR_CS_PAGE_RES 	0x1F05
; GMMRR_SUSPEND_REQ 	0x1F06
; GMMRR_SUSPEND_CNF 	0x5F04
; GMMRR_RESUME_REQ 	0x1F07
; GMMRR_ATTACH_STARTED_REQ 	0x1F0A
; GMMRR_ATTACH_FINISHED_REQ 	0x1F0B
; GMMRR_CELL_RES 	0x1F0C
; GMMRR_CR_IND 	0x5F08



PRIM 	GMMRR_ASSIGN_REQ 	0x1F00
{
 	old_tlli 	 ; Old temporary logical link identifier
 	new_tlli 	 ; New temporary logical link identifier
 	old_ptmsi 	 ; Old Packet Temporary MS Identity
 	new_ptmsi 	 ; New Packet Temporary MS Identity
 	imsi 	 ; IMSI
 	rai 	 ; Routing area identifier assinged by the network
}






PRIM 	GMMRR_ENABLE_REQ 	0x1F01
{
 	mobile_class 	 ; Mobile Class
 	acc_contr_class 	 ; Access control class
 	split_pg_cycle 	 ; Split paging cycle
 	spgc_ccch_supp 	 ; Split paging cycle support on CCCH
 	gmmrr_non_drx_timer 	 ; non_DRX timer
}






PRIM 	GMMRR_DISABLE_REQ 	0x1F02
{
}






PRIM 	GMMRR_CELL_IND 	0x5F00
{
 	cell_info 	 ; Cell information
}






PRIM 	GMMRR_READY_REQ 	0x1F03
{
}






PRIM 	GMMRR_STANDBY_REQ 	0x1F04
{
 	standby_cause 	 ; standby cause
}






PRIM 	GMMRR_PAGE_IND 	0x5F02
{
 	page_id 	 ; page ID
}






PRIM 	GMMRR_CS_PAGE_IND 	0x5F03
{
}






PRIM 	GMMRR_CS_PAGE_RES 	0x1F05
{
 	response 	 ; response
 	susp_gprs 	 ; Suspend GPRS
}






PRIM 	GMMRR_SUSPEND_REQ 	0x1F06
{
 	susp_gprs 	 ; Suspend GPRS
 	gmmrr_susp_cause 	 ; Suspension Cause
}






PRIM 	GMMRR_SUSPEND_CNF 	0x5F04
{
}






PRIM 	GMMRR_RESUME_REQ 	0x1F07
{
}






PRIM 	GMMRR_ATTACH_STARTED_REQ 	0x1F0A
{
}






PRIM 	GMMRR_ATTACH_FINISHED_REQ 	0x1F0B
{
}






PRIM 	GMMRR_CELL_RES 	0x1F0C
{
 	cu_cause 	 ; Cell Update Cause
}






PRIM 	GMMRR_CR_IND 	0x5F08
{
}