xpp: Serialized Parallel load; E-Main-3 firmware
This introduces support for loading multiple firmwares in parallel also for the case of a manual load. This is anyway the case for an automatic load from udev. * libusb needs to scan the bus all too often. This causes occasional failures for opening devices. * Thus introduce a semaphore to serialize uses of libusb. E-Main-3 firmware differs by a different value of bcdDevice: * Read this from the sysfs devices tree. * Fall back to lsusb -v (much slower) is sysfs not available. Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com> git-svn-id: http://svn.astersk.org/svn/dahdi/tools/trunk@10348 17933a7a-c749-41c5-a318-cba88f637d49
This commit is contained in:
Tzafrir Cohen
parent
29280a548c
commit
e6c2b1850d
352
xpp/xpp_fxloader
352
xpp/xpp_fxloader
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@ -70,9 +70,6 @@ ASTRIBANK_TOOL=${ASTRIBANK_TOOL:-/usr/sbin/astribank_tool}
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XPP_CONFIG="${XPP_CONFIG:-/etc/dahdi/xpp.conf}"
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XPP_UDEV_SLEEP_TIME="${XPP_UDEV_SLEEP_TIME:-15}"
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USB_FW="${USB_FW:-USB_FW.hex}"
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USB_RECOV="${USB_RECOV:-USB_RECOV.hex}"
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if [ -r "$DEFAULTS" ]; then
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. "$DEFAULTS"
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fi
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@ -113,6 +110,132 @@ run_fxload() {
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fi
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}
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list_via_proc() {
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cat /proc/bus/usb/devices | egrep '^P:|^T:' | sed \
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-e '/^T:/s/ *Spd.*//' \
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-e '/^T:/s, *Lev.*Dev#= *,\t,' \
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-e '/^T:/s,Bus=,,' \
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-e '/^P:/s,[A-Za-z]\+=,,g' \
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-e '/^P:/s,\.,,g' | awk -vusb_prefix="$USB_PREFIX" '
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/^T:/ {
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bus=$2
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dev=$3
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}
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/^P:/ {
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vendor=$2
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sub("0x", "", vendor);
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prod=$3
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sub("0x", "", product);
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bcd=$4
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printf("%4s/%4s/%d\t%s/%03d/%03d\n",
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vendor, prod, bcd, usb_prefix, bus, dev);
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}
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'
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}
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list_via_sysfs() {
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find /sys/bus/usb/devices -maxdepth 1 -mindepth 1 | \
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egrep -v '/usb[0-9]|:' | while read dev; do
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(
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cat "$dev/idVendor"
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cat "$dev/idProduct"
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cat "$dev/bcdDevice"
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echo "$dev" | sed \
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-e 's,/sys/bus/usb/devices/,,' \
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-e 's,-.*,,'
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cat "$dev/devnum"
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) | tr -s '\n' '\t'
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echo ''
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done | awk -vusb_prefix="$USB_PREFIX" '{
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printf("%4s/%4s/%d\t%s/%03d/%03d\n",
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$1, $2, $3, usb_prefix, $4, $5);
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}'
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}
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list_via_lsusb() {
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lsusb -v | awk -vusb_prefix="$USB_PREFIX" '
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/^Bus/ {
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sub(":", "", $4);
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dev = sprintf("%s/%s/%s ", usb_prefix, $2, $4);
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}
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/idVendor/ {
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id_vendor = $2
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sub("0x", "", id_vendor);
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}
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/idProduct/ {
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id_product = $2
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sub("0x", "", id_product);
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}
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/bcdDevice/ {
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bcd_device = $2
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sub("^0*", "", bcd_device);
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sub("[.]", "", bcd_device);
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printf("%s/%s/%s\t%s\n",
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id_vendor, id_product, bcd_device, dev);
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}
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'
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}
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list_devs() {
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#echo >&2 "list_devs"
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if [ "$#" -eq 0 ]; then
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if [ -f /proc/bus/usb/devices ]; then
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method='via_proc'
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elif [ -d /sys/bus/usb/devices ]; then
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method='via_sysfs'
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else
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method='via_lsusb'
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fi
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elif [ "$#" -eq 1 ]; then
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method="$1"
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else
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echo >&2 "$0: unknown list_devs method='$method'"
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exit 1
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fi
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case "$method" in
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via_proc|via_sysfs|via_lsusb)
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;;
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*)
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echo >&2 "$0: unknown list_devs method='$method'"
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exit 1
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;;
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esac
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list_$method | grep -v '^0000/0000/' | sort
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}
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filter_devs() {
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id_str="$1"
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#echo >&2 "filter_devs($id_str)"
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list_devs | awk -vid_str="$id_str" '{ if ($1 ~ id_str) { print } }'
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}
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usb_firmware_device() {
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id_str="$1"
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devpath="$2"
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case "$id_str" in
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e4e4/11[3456]0/101|e4e4/1163/101)
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fw="USB_FW.hex"
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;;
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e4e4/116[03]/201)
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fw="USB_FW.201.hex"
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;;
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e4e4/*)
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debug "No USB firmware for device $devpath ($id_str)"
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return
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;;
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*)
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return
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;;
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esac
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fw_file="$FIRMWARE_DIR/$fw"
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ver=$(awk '/\$Id:/ { print $4 }' $fw_file)
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debug "USB Firmware $fw_file (Version=$ver) into $devpath"
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run_fxload -D "$devpath" -I "$fw_file" || exit 1
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}
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run_astribank_hexload() {
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debug "Running: $ASTRIBANK_HEXLOAD $*"
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$ASTRIBANK_HEXLOAD "$@" | $LOGGER
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@ -133,18 +256,14 @@ run_astribank_tool() {
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fi
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}
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load_usb_fw() {
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v_id=$1
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p_id=$2
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fw=$3
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devices=`find_dev $v_id $p_id`
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for dev in $devices
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do
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ver=$(awk '/\$Id:/ { print $4 }' $FIRMWARE_DIR/$fw)
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debug "USB Firmware $FIRMWARE_DIR/$fw (Version=$ver) into $dev"
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run_fxload -D $dev -I $FIRMWARE_DIR/$fw || exit 1
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done
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usb_firmware_all_devices() {
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devs=`list_devs`
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echo "USB firmware"
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echo "$devs" | while read id_str devpath
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do
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usb_firmware_device "$id_str" "$devpath"
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done
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wait_renumeration $numdevs 'e4e4/11[3456]1/*' "usb_firmware_all_devices"
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}
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load_fw_device() {
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@ -152,16 +271,17 @@ load_fw_device() {
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fw="$2"
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debug "FPGA loading $fw into $dev"
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run_astribank_hexload -D "$dev" -F "$FIRMWARE_DIR/$fw"
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if [ "$fw" = "FPGA_1161.hex" ]; then
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case "$fw" in
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FPGA_1161*.hex)
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echo_file="$FIRMWARE_DIR/OCT6104E-256D.ima"
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law=''
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law_str='uLaw'
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abtool_output=`$ASTRIBANK_TOOL -D "$dev" -Q 2>/dev/null`
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card_type=`echo "$abtool_output" | grep '^CARD 4:' | cut -d= -f2 | cut -d. -f1`
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if [ "$card_type" = '5' ]; then
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card_type=`run_astribank_tool -D "$dev" -Q 2>&1 | grep 'CARD 4' | sed -e 's/.*type=//' -e 's/\..*//'`
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caps_num=`run_astribank_tool -D "$dev" -Q 2>&1 | grep 'ECHO ports' | sed -e 's/.*: *//'`
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if [ $card_type -eq 5 ]; then
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debug "ECHO burning into $dev: $echo_file"
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card_type_first=`echo "$abtool_output" | grep '^CARD 0:' | cut -d= -f2 | cut -d. -f1`
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case "$card_type_first" in
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card_type=`run_astribank_tool -D "$dev" -Q 2>&1 | grep 'CARD 0' | sed -e 's/.*type=//' -e 's/\..*//'`
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case "$card_type" in
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3) law="-A";;
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4)
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pri_protocol=''
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@ -182,88 +302,116 @@ load_fw_device() {
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if [ "$caps_num" != '0' ]; then
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run_astribank_hexload -D "$dev" -O $law "$echo_file"
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else
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$LOGGER "WARNING: ECHO burning was skipped (no capabilities)"
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echo "WARNING: ECHO burning was skipped (no capabilities)"
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fi
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fi
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pic_files=`echo "$FIRMWARE_DIR"/PIC_TYPE_[1-4].hex`
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debug "PIC burning into $dev: $pic_files"
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debug "PIC burning into $dev: begin $pic_files"
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run_astribank_hexload -D "$dev" -p $pic_files
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debug "PIC burning finished $pic_files"
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fi
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debug "PIC burning into $dev: end $pic_files"
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;;
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esac
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# Do renumeration!
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run_astribank_tool -D "$dev" -n > /dev/null
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debug "Reenumeration done."
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run_astribank_tool -D "$dev" -n > /dev/null 2>&1
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debug "Renumeration of $dev done."
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}
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#
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# Use in manual loading. Parallelize loading
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# firmwares to all of our devices
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#
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firmware_by_id() {
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v_id=$1
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p_id=$2
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fw=$3
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devices=`find_dev $v_id $p_id`
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childs=""
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for dev in $devices
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do
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(
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set -e
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fpga_firmware_device() {
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id_str="$1"
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devpath="$2"
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load_fw_device "$dev" "$fw"
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id_product=`echo "$id_str" | cut -d/ -f2`
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bcd_device=`echo "$id_str" | cut -d/ -f3`
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case "$id_str" in
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e4e4/1131/101)
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fw="FPGA_FXS.hex"
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;;
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e4e4/11[456]1/101)
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fw="FPGA_${id_product}.hex"
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;;
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e4e4/1161/201)
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fw="FPGA_${id_product}.${bcd_device}.hex"
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;;
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e4e4/*)
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debug "No FPGA firmware for device $devpath ($id_str)"
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return
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;;
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*)
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return
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;;
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esac
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debug "Loading $fw into $devpath"
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load_fw_device "$devpath" "$fw"
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sleep_if_race
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) &
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childs="$childs $!"
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sleep 0.4
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done
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# Wait for specific childs to get their exit status
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wait $childs
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}
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numdevs() {
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v_ids="$1"
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p_ids="$2"
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id_str="$1"
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for v in $v_ids
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do
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(
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for p in $p_ids
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do
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find_dev $v $p
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done
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)
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done | wc -w
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#echo >&2 "numdevs($id_str)"
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filter_devs "$id_str" | wc -l
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}
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wait_renumeration() {
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num="$1"
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v_ids="$2"
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p_ids="$3"
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num="$1"
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id_str="$2"
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caller="$3"
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iter=10
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while
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n=`numdevs "$v_ids" "$p_ids"`
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[ "$num" -gt "$n" ]
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do
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echo -n "."
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sleep 1
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done
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echo "Got all $num devices"
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prev=0
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echo "Waiting renumeration ($caller)"
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while
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n=`numdevs "$id_str"`
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[ "$num" -gt "$n" ]
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do
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if [ "$prev" -lt "$n" ]; then
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echo -n "+"
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else
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echo -n "."
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fi
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sleep 1
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prev="$n"
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debug "wait($iter) (found $n from $num devices) ($caller)"
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if ! iter=`expr $iter - 1`; then
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echo "Timeout (found $n from $num devices) ($caller)"
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break;
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fi
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done
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echo "Got all $num devices ($caller)"
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sleep 1 # Let everything settle
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}
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fpga_firmware_all_devices() {
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echo "Loading FPGA firmwares" | $LOGGER
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devs=`filter_devs 'e4e4/11[3456]1/*'`
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n=`echo "$devs" | wc -l`
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echo "$devs" | (
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while read id_str devpath; do
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fpga_firmware_device "$id_str" "$devpath" &
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done
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sleep 1
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echo "Wait for FPGA loading processes"
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wait
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) 2>&1 | $LOGGER
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wait_renumeration $numdevs 'e4e4/11[3456]2/*' "fpga_firmware_device"
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}
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reset_fpga() {
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totaldevs=`numdevs e4e4 '11[3456][0123]'`
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devices=`find_dev e4e4 '11[3456][12]'`
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debug "Reseting devices [$totaldevs devices]"
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for dev in $devices
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do
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debug "Resetting FPGA Firmware on $dev"
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sleep_if_race
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run_astribank_tool -D "$dev" -r full 2>&1 >/dev/null
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done
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if [ "$1" = 'wait' ]; then
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wait_renumeration $totaldevs e4e4 '11[3456][03]'
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fi
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devices=`filter_devs 'e4e4/11[3456][124]/*'`
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totaldevs=`numdevs 'e4e4/11[3456][124]/*'`
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$LOGGER -- "Reseting devices [$totaldevs devices]"
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echo "$devices" | grep -v '^$' | while read id_str dev
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do
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(
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debug "Resetting FPGA Firmware on $dev"
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sleep_if_race
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run_astribank_tool -D "$dev" -r full >/dev/null 2>&1
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) &
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done
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wait
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if [ "$1" = 'wait' ]; then
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wait_renumeration $totaldevs 'e4e4/11[3456][03]/*' "reset_fpga"
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fi
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}
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usage() {
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@ -304,26 +452,20 @@ reset-wait)
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reset)
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reset_fpga
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;;
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list)
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filter_devs 'e4e4/*/*'
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exit 0
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;;
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xppdetect|load|usb)
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numdevs=`numdevs e4e4 '11[3456][013]'`
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numdevs=`numdevs 'e4e4/11[3456][0134]/*'`
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$LOGGER -- "--------- FIRMWARE LOADING: ($1) [$numdevs devices]"
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load_usb_fw e4e4 1130 $USB_FW
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load_usb_fw e4e4 1140 $USB_FW
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load_usb_fw e4e4 1150 $USB_FW
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load_usb_fw e4e4 1160 $USB_FW
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load_usb_fw e4e4 1163 $USB_FW
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wait_renumeration $numdevs e4e4 '11[3456]1'
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usb_firmware_all_devices 2>&1 | $LOGGER
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if [ "$1" != 'usb' ]
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then
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firmware_by_id e4e4 1131 FPGA_FXS.hex
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firmware_by_id e4e4 1141 FPGA_1141.hex
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firmware_by_id e4e4 1151 FPGA_1151.hex
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firmware_by_id e4e4 1161 FPGA_1161.hex
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wait_renumeration $numdevs e4e4 '11[3456]2'
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fpga_firmware_all_devices
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fi
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sleep 3 # Let it stabilize
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$LOGGER -- "--------- FIRMWARE IS LOADED"
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exit 0
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;;
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@ -379,27 +521,17 @@ udev_delayed_load() {
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fi
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$LOGGER "Trying to find what to do for product $PRODUCT, device $DEVICE"
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prod_id=`echo "$PRODUCT" | cut -d/ -f2`
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case "$PRODUCT" in
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e4e4/11[3456]0/*|e4e4/1163/*)
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FIRM_USB="$FIRMWARE_DIR/$USB_FW"
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$LOGGER "Loading firmware '$FIRM_USB' into '$DEVICE'"
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run_fxload -D "$DEVICE" -I "$FIRM_USB"
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usb_firmware_device "$PRODUCT" "$DEVICE"
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;;
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e4e4/11[3456]1/*)
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# There are potentially two separate udev events, for
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# each of the two endpoints. Ignore the first interface:
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case "$DEVPATH" in *.0) exit 0;; esac
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if [ "$prod_id" = 1131 ]; then
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FIRM_FPGA="FPGA_FXS.hex" # Legacy
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else
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FIRM_FPGA="FPGA_$prod_id.hex"
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fi
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sleep_if_race
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load_fw_device "$DEVICE" "$FIRM_FPGA"
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fpga_firmware_device "$PRODUCT" "$DEVICE" &
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wait # parallel firmware loading
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;;
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esac
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}
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udev_delayed_load &
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udev_delayed_load 2>&1 | $LOGGER &
|
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|
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|
|
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144
xpp/xtalk/xusb.c
144
xpp/xtalk/xusb.c
|
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@ -30,11 +30,16 @@
|
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#include <arpa/inet.h>
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#include <debug.h>
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#include <xusb.h>
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#include <sys/time.h>
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#include <sys/types.h>
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||||
#include <sys/ipc.h>
|
||||
#include <sys/sem.h>
|
||||
|
||||
static const char rcsid[] = "$Id$";
|
||||
|
||||
#define DBG_MASK 0x01
|
||||
#define TIMEOUT 500
|
||||
#define MAX_RETRIES 10
|
||||
|
||||
struct xusb {
|
||||
struct usb_device *dev;
|
||||
|
|
@ -56,6 +61,8 @@ struct xusb {
|
|||
size_t packet_size;
|
||||
};
|
||||
|
||||
static void xusb_init();
|
||||
|
||||
void xusb_init_spec(struct xusb_spec *spec, char *name,
|
||||
uint16_t vendor_id, uint16_t product_id,
|
||||
int nifaces, int iface, int nep, int ep_out, int ep_in)
|
||||
|
|
@ -363,9 +370,7 @@ struct xusb *xusb_find_iface(const char *devpath, int iface_num, int ep_out, int
|
|||
struct usb_bus *bus;
|
||||
|
||||
DBG("\n");
|
||||
usb_init();
|
||||
usb_find_busses();
|
||||
usb_find_devices();
|
||||
xusb_init();
|
||||
for (bus = usb_get_busses(); bus; bus = bus->next) {
|
||||
int bus_num;
|
||||
char tmppath[PATH_MAX + 1];
|
||||
|
|
@ -477,9 +482,7 @@ struct xlist_node *xusb_find_byproduct(const struct xusb_spec *specs, int numspe
|
|||
ERR("Failed allocation new xlist");
|
||||
goto fail_xlist;
|
||||
}
|
||||
usb_init();
|
||||
usb_find_busses();
|
||||
usb_find_devices();
|
||||
xusb_init();
|
||||
for (bus = usb_get_busses(); bus; bus = bus->next) {
|
||||
for (dev = bus->devices; dev; dev = dev->next) {
|
||||
struct usb_device_descriptor *dev_desc;
|
||||
|
|
@ -540,7 +543,10 @@ struct xusb *xusb_open_one(const struct xusb_spec *specs, int numspecs, xusb_fil
|
|||
xusb = curr->data;
|
||||
xlist_destroy(curr, NULL);
|
||||
xlist_destroy(xusb_list, NULL);
|
||||
xusb_claim_interface(xusb);
|
||||
if(!xusb_claim_interface(xusb)) {
|
||||
xusb_destroy(xusb);
|
||||
return NULL;
|
||||
}
|
||||
xusb_showinfo(xusb);
|
||||
break;
|
||||
default:
|
||||
|
|
@ -657,12 +663,14 @@ int xusb_close(struct xusb *xusb)
|
|||
int xusb_send(struct xusb *xusb, char *buf, int len, int timeout)
|
||||
{
|
||||
int ret;
|
||||
int retries = 0;
|
||||
|
||||
dump_packet(LOG_DEBUG, DBG_MASK, __FUNCTION__, buf, len);
|
||||
if(EP_OUT(xusb) & USB_ENDPOINT_IN) {
|
||||
ERR("%s called with an input endpoint 0x%x\n", __FUNCTION__, EP_OUT(xusb));
|
||||
return -EINVAL;
|
||||
}
|
||||
retry_write:
|
||||
ret = usb_bulk_write(xusb->handle, EP_OUT(xusb), buf, len, timeout);
|
||||
if(ret < 0) {
|
||||
/*
|
||||
|
|
@ -672,17 +680,39 @@ int xusb_send(struct xusb *xusb, char *buf, int len, int timeout)
|
|||
if(ret != -ENODEV) {
|
||||
ERR("bulk_write to endpoint 0x%x failed: (%d) %s\n",
|
||||
EP_OUT(xusb), ret, usb_strerror());
|
||||
dump_packet(LOG_ERR, DBG_MASK, "xbus_send[ERR]", buf, len);
|
||||
dump_packet(LOG_ERR, DBG_MASK, "xusb_send[ERR]", buf, len);
|
||||
//exit(2);
|
||||
} else {
|
||||
DBG("bulk_write to endpoint 0x%x got ENODEV\n", EP_OUT(xusb));
|
||||
xusb_close(xusb);
|
||||
}
|
||||
return ret;
|
||||
} else if(ret != len) {
|
||||
}
|
||||
if(!ret) {
|
||||
#if 0
|
||||
FILE *fp;
|
||||
|
||||
fp = fopen("/tmp/xusb.log", "a");
|
||||
if (!fp) {
|
||||
ERR("%s: Failed writing to /tmp/xusb.log\n", __func__);
|
||||
return -EFAULT;
|
||||
}
|
||||
fprintf(fp, "[%ld] bulk_write to endpoint 0x%x short write[%d]: (%d)\n",
|
||||
time(NULL), EP_OUT(xusb), retries, ret);
|
||||
fclose(fp);
|
||||
#endif
|
||||
ERR("bulk_write to endpoint 0x%x short write[%d]: (%d)\n",
|
||||
EP_OUT(xusb), retries, ret);
|
||||
if (retries++ > MAX_RETRIES) {
|
||||
return -EFAULT;
|
||||
}
|
||||
usleep(100);
|
||||
goto retry_write;
|
||||
}
|
||||
if(ret != len) {
|
||||
ERR("bulk_write to endpoint 0x%x short write: (%d) %s\n",
|
||||
EP_OUT(xusb), ret, usb_strerror());
|
||||
dump_packet(LOG_ERR, DBG_MASK, "xbus_send[ERR]", buf, len);
|
||||
dump_packet(LOG_ERR, DBG_MASK, "xusb_send[ERR]", buf, len);
|
||||
return -EFAULT;
|
||||
}
|
||||
return ret;
|
||||
|
|
@ -691,11 +721,13 @@ int xusb_send(struct xusb *xusb, char *buf, int len, int timeout)
|
|||
int xusb_recv(struct xusb *xusb, char *buf, size_t len, int timeout)
|
||||
{
|
||||
int ret;
|
||||
int retries = 0;
|
||||
|
||||
if(EP_IN(xusb) & USB_ENDPOINT_OUT) {
|
||||
ERR("%s called with an output endpoint 0x%x\n", __FUNCTION__, EP_IN(xusb));
|
||||
return -EINVAL;
|
||||
}
|
||||
retry_read:
|
||||
ret = usb_bulk_read(xusb->handle, EP_IN(xusb), buf, len, timeout);
|
||||
if(ret < 0) {
|
||||
DBG("bulk_read from endpoint 0x%x failed: (%d) %s\n",
|
||||
|
|
@ -703,6 +735,27 @@ int xusb_recv(struct xusb *xusb, char *buf, size_t len, int timeout)
|
|||
memset(buf, 0, len);
|
||||
return ret;
|
||||
}
|
||||
if(!ret) {
|
||||
#if 0
|
||||
FILE *fp;
|
||||
|
||||
fp = fopen("/tmp/xusb.log", "a");
|
||||
if (!fp) {
|
||||
ERR("%s: Failed writing to /tmp/xusb.log\n", __func__);
|
||||
return -EFAULT;
|
||||
}
|
||||
fprintf(fp, "[%ld] bulk_read from endpoint 0x%x short read[%d]: (%d)\n",
|
||||
time(NULL), EP_IN(xusb), retries, ret);
|
||||
fclose(fp);
|
||||
#endif
|
||||
ERR("bulk_read to endpoint 0x%x short read[%d]: (%d)\n",
|
||||
EP_IN(xusb), retries, ret);
|
||||
if (retries++ > MAX_RETRIES) {
|
||||
return -EFAULT;
|
||||
}
|
||||
usleep(100);
|
||||
goto retry_read;
|
||||
}
|
||||
dump_packet(LOG_DEBUG, DBG_MASK, __FUNCTION__, buf, ret);
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -724,3 +777,74 @@ int xusb_flushread(struct xusb *xusb)
|
|||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Serialize calls to usb_find_busses()/usb_find_devices()
|
||||
*/
|
||||
|
||||
static const key_t SEM_KEY = 0x1a2b3c4d;
|
||||
static int semid = -1; /* Failure */
|
||||
|
||||
static void xusb_lock_usb()
|
||||
{
|
||||
struct sembuf sembuf;
|
||||
|
||||
while (semid < 0) {
|
||||
/* Maybe it was already created? */
|
||||
semid = semget(SEM_KEY, 1, 0);
|
||||
if (semid < 0) {
|
||||
/* No, let's create ourselves */
|
||||
semid = semget(SEM_KEY, 1, IPC_CREAT | IPC_EXCL | 0644);
|
||||
if (semid < 0) {
|
||||
/* Someone else won the race to create it */
|
||||
if (errno != ENOENT)
|
||||
ERR("%s: semget() failed: %s\n",
|
||||
__func__, strerror(errno));
|
||||
/* Retry */
|
||||
continue;
|
||||
}
|
||||
/* Initialize */
|
||||
if (semctl(semid, 0, SETVAL, 1) < 0)
|
||||
ERR("%s: SETVAL() failed: %s\n",
|
||||
__func__, strerror(errno));
|
||||
}
|
||||
}
|
||||
DBG("%d: LOCKING\n", getpid());
|
||||
sembuf.sem_num = 0;
|
||||
sembuf.sem_op = -1;
|
||||
sembuf.sem_flg = SEM_UNDO;
|
||||
if (semop(semid, &sembuf, 1) < 0) {
|
||||
ERR("%s: semop() failed: %s\n", __func__, strerror(errno));
|
||||
}
|
||||
DBG("%d: LOCKED\n", getpid());
|
||||
}
|
||||
|
||||
static void xusb_unlock_usb()
|
||||
{
|
||||
struct sembuf sembuf;
|
||||
|
||||
DBG("%d: UNLOCKING\n", getpid());
|
||||
sembuf.sem_num = 0;
|
||||
sembuf.sem_op = 1;
|
||||
sembuf.sem_flg = SEM_UNDO;
|
||||
if (semop(semid, &sembuf, 1) < 0) {
|
||||
ERR("%s: semop() failed: %s\n", __func__, strerror(errno));
|
||||
}
|
||||
DBG("%d: UNLOCKED\n", getpid());
|
||||
}
|
||||
|
||||
static int initizalized = 0;
|
||||
|
||||
static void xusb_init()
|
||||
{
|
||||
if (!initizalized) {
|
||||
if (!getenv("XUSB_NOLOCK"))
|
||||
xusb_lock_usb();
|
||||
usb_init();
|
||||
usb_find_busses();
|
||||
usb_find_devices();
|
||||
initizalized = 1;
|
||||
if (!getenv("XUSB_NOLOCK"))
|
||||
xusb_unlock_usb();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue