dvals

和我之前上载的intel 802.11协议源码是配套的

#!/bin/sh
MODULE="ipw2200"
DEBUG_PATH="/sys/bus/pci/drivers/${MODULE}/debug_level"
LEVEL=""

function get_level()
{
	if [ ! -e ${DEBUG_PATH} ]; then
		LEVEL=""
	else
		LEVEL=`cat ${DEBUG_PATH}`
	fi
}

function bit()
{
	VAL=1
	for ((i = 0; i < $2; i++)); do
		VAL=$((VAL*2))
	done
	SET="$((VAL & $3))"
	if [ "${SET}" = "0" ]; then
		SET=" "
	else
		SET="*"
	fi
	printf "%-20s\t\t0x%08X [%s] %d\n" $1 $VAL "$SET" $VAL
}

IFS="
"
LEVELS=`sed -ne "s#.*\(_DL_.*\) *(1<<\(.*\))#IPW\1 \2#p" ipw2200.h`
get_level

if [ ! -z ${LEVEL} ]; then
	LEV=$((LEVEL))
else
	LEV=0
fi
printf "%-20s\t\t%-10s Set Decimal\n" "Description" "Hex"
for i in $LEVELS; do
	IFS=" 
"
	bit $i ${LEV}
done

if [ ! -z ${LEVEL} ]; then
	printf "debug_level = ${LEVEL} (* = enabled)\n"
else
	printf "${MODULE} not currently loaded.  debug_level not set.\n"
fi
echo "Example usage:"
echo "	./load debug=\$((0x20000 + 0x1 + 0x2 + 0x4 ...))"