66 lines
1.4 KiB
Bash
66 lines
1.4 KiB
Bash
#! /bin/sh
|
|
# Copyright (c) 2005 SUSE LINUX Products GmbH, Nuernberg, Germany
|
|
#
|
|
# Author: Ladislav Slezak <lslezak@suse.cz>
|
|
#
|
|
# System script for enabling/disabling IDE DMA mode
|
|
#
|
|
# The script takes the first command line parameter and sets the configured DMA
|
|
# mode up. If the device is not configured in DEVICES_FORCE_IDE_DMA variable DMA
|
|
# status is not changed.
|
|
#
|
|
|
|
HDPARM=/sbin/hdparm
|
|
test -x $HDPARM || exit 5
|
|
|
|
# read values from sysconfig
|
|
. /etc/sysconfig/ide
|
|
|
|
if [ "$DEVICES_FORCE_IDE_DMA" = "" -o $1 = "" ] ; then
|
|
exit 0;
|
|
fi
|
|
|
|
|
|
OLDIFS=$IFS
|
|
for dev in $DEVICES_FORCE_IDE_DMA ; do
|
|
# Get device and DMA mode
|
|
|
|
MODE=""
|
|
DEVICE=""
|
|
OPTIONS=""
|
|
FIRST=0
|
|
|
|
# The setting e.g. "/dev/hda:69:-c1:-m16:-u1:-W1:-A1" should be
|
|
# expanded as "hdparm -d 1 -X 69 -c1 -m16 -u1 -W1 -A1 /dev/hda"
|
|
|
|
IFS=":"
|
|
for d in $dev ; do
|
|
case $((FIRST++)) in
|
|
0) DEVICE=$d ;;
|
|
1) MODE=$d ;;
|
|
*) OPTIONS="$OPTIONS$d:"
|
|
esac
|
|
done
|
|
unset d
|
|
|
|
if [ "$DEVICE" == "$1" ] ; then
|
|
echo "$DEVICE: setting up IDE DMA mode $MODE"
|
|
|
|
# Set DMA mode by hdparm utility
|
|
if [ -z "$MODE" ] ; then
|
|
echo "Missing DMA mode for device $DEVICE"
|
|
elif [ $MODE = "off" ] ; then
|
|
$HDPARM -d 0 "$DEVICE"
|
|
elif [ $MODE = "on" ] ; then
|
|
$HDPARM -d 1 "$DEVICE"
|
|
else
|
|
$HDPARM -d 1 -X "$MODE" ${OPTIONS:+$OPTIONS} "$DEVICE"
|
|
fi
|
|
fi
|
|
|
|
# Reset Internal Field Separator for the outer loop
|
|
IFS=$OLDIFS
|
|
done
|
|
unset dev
|
|
|