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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           : ph.pdf
;*** Creation       : Wed Mar 11 09:58:34 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  : ph
;*** Document No.   : 6147.112.01.100
;*** Document Date  : 2001-10-26
;*** Document Status: APPROVED
;*** Document Author: SBK
;********************************************************************************



PRAGMA 	SRC_FILE_TIME 	"Thu Nov 29 09:50:28 2007"
PRAGMA 	LAST_MODIFIED 	"2001-10-26"
PRAGMA 	ID_AND_VERSION 	"6147.112.01.100"



CONST 	DUMMY_PH 	0 	; Dummy, not used, needed to satisfy tool chain which requires at least one constant definition in a SAP



VALTAB 	VAL_ch_type
VAL 	0 	CH_TYPE_SACCH 	"SACCH"
VAL 	1 	CH_TYPE_SDCCH 	"SDCCH"
VAL 	2 	CH_TYPE_FACCH 	"FACCH Full Rate"
VAL 	3 	 	"reserved"
VAL 	4 	 	"reserved"
VAL 	5 	 	"reserved"
VAL 	6 	 	"reserved"
VAL 	7 	CH_TYPE_FACCH_HR 	"FACCH Half Rate"




VAR 	l2_channel 	"Layer 2 channel-type" 	B

VAL 	@p_mphc - VAL_l2_channel@ 	

VAR 	l_buf 	"length of content in bit" 	S


VAR 	o_buf 	"offset of content in bit" 	S


VAR 	buf 	"buffer content; the actual size of buf is determined and allocated at run-time and not restricted to 1;" 	B


VAR 	dummy 	"dummy not used" 	B





COMP 	sdu 	 "message unit"
{
 	l_buf 	 ; length of content in bit
 	o_buf 	 ; offset of content in bit
 	buf 	[1] 	 ; buffer content; the actual size of buf is determined and allocated at run-time and not restricted to 1;
}






; PH_READY_TO_SEND 	0x4100
; PH_DATA_REQ 	0x0100
; PH_TRACE_IND 	0x4102



PRIM 	PH_READY_TO_SEND 	0x4100
{
 	l2_channel AS ch_type 	 ; channel type
}






PRIM 	PH_DATA_REQ 	0x0100
{
 	l2_channel AS ch_type 	 ; channel type
 	dummy 	 ; dummy not used; reserved
 	sdu 	 ; message unit
}






PRIM 	PH_TRACE_IND 	0x4102
{
 	dummy 	 ; dummy not used; not used
}