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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           : gsim.pdf
;*** Creation       : Wed Mar 11 09:58:11 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  : gsim
;*** Document No.   : 8441.113.99.004
;*** Document Date  : 2003-02-04
;*** Document Status: BEING_PROCESSED
;*** Document Author: LG
;********************************************************************************



PRAGMA 	SRC_FILE_TIME 	"Thu Nov 29 09:43:12 2007"
PRAGMA 	LAST_MODIFIED 	"2003-02-04"
PRAGMA 	ID_AND_VERSION 	"8441.113.99.004"



CONST 	GSIM_PTMSI_NA 	0xFFFFFFFF 	; P-TMSI not applicable (i.e. this parameter shall be ignored)
CONST 	SIZE_SRES 	4 	; size of sres
CONST 	SIZE_KC 	8 	; size of kc
CONST 	SIZE_RAND 	16 	; size of rand
CONST 	MAX_IMSI 	9 	; Number of bytes to be read from EF(IMSI)



VALTAB 	VAL_gu
VAL 	0 	GSIM_GU_NA 	"GPRS update status not applicable (i.e. this parameter shall be ignored)"
VAL 	1 	GSIM_GU1_UPDATED 	"last GPRS attach or RAU attempt successful"
VAL 	2 	GSIM_GU2_NOT_UPDATED 	"last GPRS attach or RAU attempt failed procedurally"
VAL 	3 	GSIM_GU3_ROAMING_NOT_ALLOWED 	"last GPRS attach or RAU attempt correctly performed, but negative answer from network received"

VALTAB 	VAL_tmsi
VAL 	0xFFFFFFFF 	GSIM_TMSI_INVALID 	"P-TMSI invalid (see GSM 3.03)"

VALTAB 	VAL_ptmsi_signature_flag
VAL 	0 	GSIM_PTMSI_SIG_DEL 	"P-TMSI Dignature shall be deleted"
VAL 	1 	GSIM_PTMSI_SIG_VALID 	"P-TMSI Signature is valid"
VAL 	2 	GSIM_PTMSI_SIG_NA 	"P-TMSI Signature not applicable (i.e. this parameter shall be ignored)"

VALTAB 	VAL_gsim_cksn
VAL 	0 	GSIM_CKSN_NA 	"GPRS ciphering key sequence number not applicable (i.e. this parameter shall be ignored)"

VALTAB 	VAL_sim_gprs_invalid
VAL 	0 	GSIM_SIM_GPRS_NA 	"not applicable (i.e. this parameter shall be ignored)"
VAL 	1 	GSIM_SIM_GPRS_VALID 	"SIM is considered as valid for GPRS"
VAL 	2 	GSIM_SIM_GPRS_INVALID 	"SIM is considered as invalid for GPRS"




VAR 	gu 	"GPRS update status" 	B

VAL 	@p_gsim - VAL_gu@ 	

VAR 	rai 	"routing_area information" 	B


VAR 	tmsi 	"temporary mobile subscriber identity" 	L

VAL 	@p_gsim - VAL_tmsi@ 	

VAR 	ptmsi 	"packet temporary mobile subscriber identity" 	L

VAL 	@p_gsim - VAL_tmsi@ 	

VAR 	c_field 	"length of imsi" 	B


VAR 	field 	"imsi" 	B


VAR 	ptmsi_signature_flag 	"P-TMSI Signature flag" 	B

VAL 	@p_gsim - VAL_ptmsi_signature_flag@ 	

VAR 	gsim_kc 	"GPRS ciphering key" 	B


VAR 	gsim_cksn 	"GPRS ciphering key sequence number" 	B

VAL 	@p_gsim - VAL_gsim_cksn@ 	

VAR 	sres 	"authentication parameter Sres" 	B


VAR 	rand 	"authentication parameter rand" 	B


VAR 	sim_gprs_invalid 	"SIM invalid for GPRS service" 	B

VAL 	@p_gsim - VAL_sim_gprs_invalid@ 	

VAR 	acc_contr_class 	"Access Control Class" 	S





COMP 	imsi_field 	 "international mobile subscriber identity"
{
 	c_field 	 ; length of imsi
 	field 	[MAX_IMSI] 	 ; imsi
}






; GSIM_UPDATE_REQ 	0x2900
; GSIM_STORE_KC_REQ 	0x2901
; GSIM_INSERTED_IND 	0x6900
; GSIM_REMOVED_IND 	0x6901
; GSIM_AUTHENTICATION_REQ 	0x2902
; GSIM_AUTHENTICATION_CNF 	0x6902



PRIM 	GSIM_UPDATE_REQ 	0x2900
{
 	sim_gprs_invalid 	 ; SIM invalid for GPRS service
 	gu 	 ; GPRS update status
 	ptmsi 	 ; packet temporary mobile subscriber identity
 	ptmsi_signature_flag 	 ; P-TMSI Signature flag
 	rai 	[7] 	 ; routing area identification
}






PRIM 	GSIM_STORE_KC_REQ 	0x2901
{
 	gsim_kc 	[8] 	 ; GPRS ciphering key
 	gsim_cksn 	 ; GPRS ciphering key sequence number
}






PRIM 	GSIM_INSERTED_IND 	0x6900
{
 	sim_gprs_invalid 	 ; SIM invalid for GPRS service
 	gu 	 ; GPRS update status
 	rai 	[7] 	 ; routing area identification
 	ptmsi 	 ; packet temporary mobile subscriber identity
 	tmsi 	 ; temporary mobile subscriber identity
 	imsi_field 	 ; international mobile subscriber identity
 	gsim_kc 	[8] 	 ; GPRS ciphering key
 	gsim_cksn 	 ; GPRS ciphering key sequence number
 	acc_contr_class 	 ; Access control class
}






PRIM 	GSIM_REMOVED_IND 	0x6901
{
}






PRIM 	GSIM_AUTHENTICATION_REQ 	0x2902
{
 	rand 	[SIZE_RAND] 	 ; rand
 	gsim_cksn 	 ; ciphering key sequence number
}






PRIM 	GSIM_AUTHENTICATION_CNF 	0x6902
{
 	sres 	[SIZE_SRES] 	 ; Sres
 	gsim_kc 	[SIZE_KC] 	 ; Kc
}