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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           : ip.pdf
;*** Creation       : Wed Mar 11 09:58:12 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  : ip
;*** Document No.   : 8444.101.00.006
;*** Document Date  : 2003-08-30
;*** Document Status: BEING_PROCESSED
;*** Document Author: Jacek
;********************************************************************************



PRAGMA 	SRC_FILE_TIME 	"Thu Nov 29 09:43:40 2007"
PRAGMA 	LAST_MODIFIED 	"2003-08-30"
PRAGMA 	ID_AND_VERSION 	"8444.101.00.006"






VALTAB 	VAL_err
VAL 	0 	IP_ADDR_NOERROR 	"no error"
VAL 	1 	IP_ADDR_NOROUTE 	"no route to destination"

VALTAB 	VAL_trans_prot
VAL 	6 	TCP_PROTOCOL 	"TCP protocol"
VAL 	17 	UDP_PROTOCOL 	"UDP protocol"
VAL 	16 	RAW_PROTOCOL 	"Chaos"




VAR 	dst_addr 	"destination address" 	L


VAR 	src_addr 	"source address" 	L


VAR 	err 	"error code" 	B

VAL 	@p_ip - VAL_err@ 	

VAR 	trans_prot 	"transport protocol" 	B

VAL 	@p_ip - VAL_trans_prot@ 	







; IP_ADDR_REQ 	0x3900
; IP_ADDR_CNF 	0x7900



PRIM 	IP_ADDR_REQ 	0x3900
{
 	dst_addr 	 ; destination address
 	trans_prot 	 ; transport protocol
}






PRIM 	IP_ADDR_CNF 	0x7900
{
 	src_addr 	 ; source  address
 	err 	 ; error code
 	trans_prot 	 ; transport protocol
}