[patch] pci-parm.patch

pci-parm.patch (text/plain), 2.35 KB, created by Steve L on 2008-10-08 18:20:22 UTC

--- pci-parm.orig	2008-10-08 17:51:39.000000000 +0100
+++ pci-parm	2008-10-08 19:00:35.000000000 +0100
@@ -1,4 +1,6 @@
 #!/sbin/runscript
+# (C) 2008 Gentoo Foundation
+# Distributed under the terms of the GPLv2
 # read this article to know what to do
 # http://gentoo.org/doc/en/articles/hardware-stability-p2.xml#doc_chap3_pre2
 
@@ -22,54 +24,61 @@
 
 do_setpci() {
 	#ewarn "do_setpci: /usr/sbin/setpci $SETPCI_OPT $@"
-	SWITCH=$1
-	if [ "$SWITCH" = "-d" ]; then
-		DESC="(vendor)"
-	else
-		DESC="(bus)"
-	fi
-	shift
+	x=
+	case $1 in
+	-d) DESC=vendor
+;;	-s) DESC=bus
+;;	-x) x=1; shift; false
+;;	*) DESC=bus; SWITCH=-s
+#		[ "$VERBOSE" = yes ] && ewarn "do_setpci $*"
+		false
+;;	esac && { SWITCH=$1; shift; }
 	SPEC_ID=$1
 	shift
-	ebegin "Setting PCI params for $DESC $SPEC_ID to $@"
-	/usr/sbin/setpci $SETPCI_OPT $SWITCH $SPEC_ID $@
-	eend $?
-	SWITCH=""
-	SPEC_ID=""
+	[ -n "$SWITCH" -a -n "$SPEC_ID" -a -n "$1" ] || {
+		eerror "Bad call to: do_setpci $SWITCH $SPEC_ID $1"
+		return 1
+	}
+	ebegin "Setting PCI params for ($DESC) $SPEC_ID to $@"
+	/usr/sbin/setpci $SETPCI_OPT "$SWITCH" "$SPEC_ID" "$@"
+	r=$?
+	[ -n "$x" ] && unset -v SPEC_ID || unset -v SWITCH SPEC_ID
+	eend "$r"
+	return "$r"
+}
+
+dopci_array() {
+	case $1 in
+	-d) DESC=vendor
+;;	-s) DESC=bus
+;;	*) eerror "Unknown type to: dopci_array $*";return 1
+;;	esac
+	SWITCH=$1; shift
+	i=0
+	while true; do
+		eval opt="\$${1}_$i"
+		[ -n "$opt" ] || break
+		do_setpci -x $opt || return 1
+		i=$(($i+1))
+	done
+	unset -v opt i SWITCH
 }
 
 start() {
-	if get_bootparam "nopciparm" ; then
+	if get_bootparam nopciparm; then
 		ewarn "Skipping pciparm init as requested in kernel cmdline"
 		return 0
 	fi
 
 	checkconfig || return 1
 	
-	SETPCI_OPT=""
-	if [ "$VERBOSE" = "yes" ]; then
-		SETPCI_OPT="$SETPCI_OPT -v"
+	if [ "$VERBOSE" = yes ]; then
+		SETPCI_OPT=' -v'
+	else SETPCI_OPT=
 	fi
 
 	if [ -n "$PCIPARM_ALL" ]; then
 		do_setpci -d '*:*' $PCIPARM_ALL
 	fi
-	SEQ_BUS=0
-	while true; do
-		BUS_OPT=`eval echo '$'PCIPARM_BUS_${SEQ_BUS}`
-		if [ -z "$BUS_OPT" ]; then
-			break
-		fi
-		do_setpci -s $BUS_OPT
-		SEQ_BUS=$(($SEQ_BUS+1))
-	done
-	SEQ_VENDOR=0
-	while true; do
-		VENDOR_OPT=`eval echo '$'PCIPARM_VENDOR_${SEQ_VENDOR}`
-		if [ -z "$VENDOR_OPT" ]; then
-			break
-		fi
-		do_setpci -d $VENDOR_OPT
-		SEQ_VENDOR=$(($SEQ_VENDOR+1))
-	done
+	dopci_array -s PCIPARM_BUS && dopci_array -d PCIPARM_VENDOR
 }