#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) 2016 Microsemi. All Rights Reserved.
#
# Author: Logan Gunthorpe <[email protected]>
REMOTE_HOST=
LIST_DEVS=FALSE
DEBUGFS=${DEBUGFS-/sys/kernel/debug}
PERF_RUN_ORDER=32
MAX_MW_SIZE=0
RUN_DMA_TESTS=
DONT_CLEANUP=
MW_SIZE=65536
function show_help()
{
echo "Usage: $0 [OPTIONS] LOCAL_DEV REMOTE_DEV"
echo "Run tests on a pair of NTB endpoints."
echo
echo "If the NTB device loops back to the same host then,"
echo "just specifying the two PCI ids on the command line is"
echo "sufficient. Otherwise, if the NTB link spans two hosts"
echo "use the -r option to specify the hostname for the remote"
echo "device. SSH will then be used to test the remote side."
echo "An SSH key between the root users of the host would then"
echo "be highly recommended."
echo
echo "Options:"
echo " -C don't cleanup ntb modules on exit"
echo " -h show this help message"
echo " -l list available local and remote PCI ids"
echo " -r REMOTE_HOST specify the remote's hostname to connect"
echo " to for the test (using ssh)"
echo " -m MW_SIZE memory window size for ntb_tool"
echo " (default: $MW_SIZE)"
echo " -d run dma tests for ntb_perf"
echo " -p ORDER total data order for ntb_perf"
echo " (default: $PERF_RUN_ORDER)"
echo " -w MAX_MW_SIZE maxmium memory window size for ntb_perf"
echo
}
function parse_args()
{
OPTIND=0
while getopts "b:Cdhlm:r:p:w:" opt; do
case "$opt" in
C) DONT_CLEANUP=1 ;;
d) RUN_DMA_TESTS=1 ;;
h) show_help; exit 0 ;;
l) LIST_DEVS=TRUE ;;
m) MW_SIZE=${OPTARG} ;;
r) REMOTE_HOST=${OPTARG} ;;
p) PERF_RUN_ORDER=${OPTARG} ;;
w) MAX_MW_SIZE=${OPTARG} ;;
\?)
echo "Invalid option: -$OPTARG" >&2
exit 1
;;
esac
done
}
parse_args "$@"
shift $((OPTIND-1))
LOCAL_DEV=$1
shift
parse_args "$@"
shift $((OPTIND-1))
REMOTE_DEV=$1
shift
parse_args "$@"
set -e
function _modprobe()
{
modprobe "$@" || return 1
if [[ "$REMOTE_HOST" != "" ]]; then
ssh "$REMOTE_HOST" modprobe "$@" || return 1
fi
}
function split_remote()
{
VPATH=$1
REMOTE=
if [[ "$VPATH" == *":/"* ]]; then
REMOTE=${VPATH%%:*}
VPATH=${VPATH#*:}
fi
}
function read_file()
{
split_remote $1
if [[ "$REMOTE" != "" ]]; then
ssh "$REMOTE" cat "$VPATH"
else
cat "$VPATH"
fi
}
function write_file()
{
split_remote $2
VALUE=$1
if [[ "$REMOTE" != "" ]]; then
ssh "$REMOTE" "echo \"$VALUE\" > \"$VPATH\""
else
echo "$VALUE" > "$VPATH"
fi
}
function check_file()
{
split_remote $1
if [[ "$REMOTE" != "" ]]; then
ssh "$REMOTE" "[[ -e ${VPATH} ]]"
else
[[ -e ${VPATH} ]]
fi
}
function subdirname()
{
echo $(basename $(dirname $1)) 2> /dev/null
}
function find_pidx()
{
PORT=$1
PPATH=$2
for ((i = 0; i < 64; i++)); do
PEER_DIR="$PPATH/peer$i"
check_file ${PEER_DIR} || break
PEER_PORT=$(read_file "${PEER_DIR}/port")
if [[ ${PORT} -eq $PEER_PORT ]]; then
echo $i
return 0
fi
done
return 1
}
function port_test()
{
LOC=$1
REM=$2
echo "Running port tests on: $(basename $LOC) / $(basename $REM)"
LOCAL_PORT=$(read_file "$LOC/port")
REMOTE_PORT=$(read_file "$REM/port")
LOCAL_PIDX=$(find_pidx ${REMOTE_PORT} "$LOC")
REMOTE_PIDX=$(find_pidx ${LOCAL_PORT} "$REM")
echo "Local port ${LOCAL_PORT} with index ${REMOTE_PIDX} on remote host"
echo "Peer port ${REMOTE_PORT} with index ${LOCAL_PIDX} on local host"
echo " Passed"
}
function link_test()
{
LOC=$1
REM=$2
EXP=0
echo "Running link tests on: $(subdirname $LOC) / $(subdirname $REM)"
if ! write_file "N" "$LOC/../link" 2> /dev/null; then
echo " Unsupported"
return
fi
write_file "N" "$LOC/link_event"
if [[ $(read_file "$REM/link") != "N" ]]; then
echo "Expected link to be down in $REM/link" >&2
exit -1
fi
write_file "Y" "$LOC/../link"
echo " Passed"
}
function doorbell_test()
{
LOC=$1
REM=$2
EXP=0
echo "Running db tests on: $(basename $LOC) / $(basename $REM)"
DB_VALID_MASK=$(read_file "$LOC/db_valid_mask")
write_file "c $DB_VALID_MASK" "$REM/db"
for ((i = 0; i < 64; i++)); do
DB=$(read_file "$REM/db")
if [[ "$DB" -ne "$EXP" ]]; then
echo "Doorbell doesn't match expected value $EXP " \
"in $REM/db" >&2
exit -1
fi
let "MASK = (1 << $i) & $DB_VALID_MASK" || true
let "EXP = $EXP | $MASK" || true
write_file "s $MASK" "$LOC/peer_db"
done
write_file "c $DB_VALID_MASK" "$REM/db_mask"
write_file $DB_VALID_MASK "$REM/db_event"
write_file "s $DB_VALID_MASK" "$REM/db_mask"
write_file "c $DB_VALID_MASK" "$REM/db"
echo " Passed"
}
function get_files_count()
{
NAME=$1
LOC=$2
split_remote $LOC
if [[ "$REMOTE" == "" ]]; then
echo $(ls -1 "$VPATH"/${NAME}* 2>/dev/null | wc -l)
else
echo $(ssh "$REMOTE" "ls -1 \"$VPATH\"/${NAME}* | \
wc -l" 2> /dev/null)
fi
}
function scratchpad_test()
{
LOC=$1
REM=$2
echo "Running spad tests on: $(subdirname $LOC) / $(subdirname $REM)"
CNT=$(get_files_count "spad" "$LOC")
if [[ $CNT -eq 0 ]]; then
echo " Unsupported"
return
fi
for ((i = 0; i < $CNT; i++)); do
VAL=$RANDOM
write_file "$VAL" "$LOC/spad$i"
RVAL=$(read_file "$REM/../spad$i")
if [[ "$VAL" -ne "$RVAL" ]]; then
echo "Scratchpad $i value $RVAL doesn't match $VAL" >&2
exit -1
fi
done
echo " Passed"
}
function message_test()
{
LOC=$1
REM=$2
echo "Running msg tests on: $(subdirname $LOC) / $(subdirname $REM)"
CNT=$(get_files_count "msg" "$LOC")
if [[ $CNT -eq 0 ]]; then
echo " Unsupported"
return
fi
MSG_OUTBITS_MASK=$(read_file "$LOC/../msg_inbits")
MSG_INBITS_MASK=$(read_file "$REM/../msg_inbits")
write_file "c $MSG_OUTBITS_MASK" "$LOC/../msg_sts"
write_file "c $MSG_INBITS_MASK" "$REM/../msg_sts"
for ((i = 0; i < $CNT; i++)); do
VAL=$RANDOM
write_file "$VAL" "$LOC/msg$i"
RVAL=$(read_file "$REM/../msg$i")
if [[ "$VAL" -ne "${RVAL%%<-*}" ]]; then
echo "Message $i value $RVAL doesn't match $VAL" >&2
exit -1
fi
done
echo " Passed"
}
function get_number()
{
KEY=$1
sed -n "s/^\(${KEY}\)[ \t]*\(0x[0-9a-fA-F]*\)\(\[p\]\)\?$/\2/p"
}
function mw_alloc()
{
IDX=$1
LOC=$2
REM=$3
write_file $MW_SIZE "$LOC/mw_trans$IDX"
INB_MW=$(read_file "$LOC/mw_trans$IDX")
MW_ALIGNED_SIZE=$(echo "$INB_MW" | get_number "Window Size")
MW_DMA_ADDR=$(echo "$INB_MW" | get_number "DMA Address")
write_file "$MW_DMA_ADDR:$(($MW_ALIGNED_SIZE))" "$REM/peer_mw_trans$IDX"
if [[ $MW_SIZE -ne $MW_ALIGNED_SIZE ]]; then
echo "MW $IDX size aligned to $MW_ALIGNED_SIZE"
fi
}
function write_mw()
{
split_remote $2
if [[ "$REMOTE" != "" ]]; then
ssh "$REMOTE" \
dd if=/dev/urandom "of=$VPATH" 2> /dev/null || true
else
dd if=/dev/urandom "of=$VPATH" 2> /dev/null || true
fi
}
function mw_check()
{
IDX=$1
LOC=$2
REM=$3
write_mw "$LOC/mw$IDX"
split_remote "$LOC/mw$IDX"
if [[ "$REMOTE" == "" ]]; then
A=$VPATH
else
A=/tmp/ntb_test.$$.A
ssh "$REMOTE" cat "$VPATH" > "$A"
fi
split_remote "$REM/peer_mw$IDX"
if [[ "$REMOTE" == "" ]]; then
B=$VPATH
else
B=/tmp/ntb_test.$$.B
ssh "$REMOTE" cat "$VPATH" > "$B"
fi
cmp -n $MW_ALIGNED_SIZE "$A" "$B"
if [[ $? != 0 ]]; then
echo "Memory window $MW did not match!" >&2
fi
if [[ "$A" == "/tmp/*" ]]; then
rm "$A"
fi
if [[ "$B" == "/tmp/*" ]]; then
rm "$B"
fi
}
function mw_free()
{
IDX=$1
LOC=$2
REM=$3
write_file "$MW_DMA_ADDR:0" "$REM/peer_mw_trans$IDX"
write_file 0 "$LOC/mw_trans$IDX"
}
function mw_test()
{
LOC=$1
REM=$2
CNT=$(get_files_count "mw_trans" "$LOC")
for ((i = 0; i < $CNT; i++)); do
echo "Running mw$i tests on: $(subdirname $LOC) / " \
"$(subdirname $REM)"
mw_alloc $i $LOC $REM
mw_check $i $LOC $REM
mw_free $i $LOC $REM
echo " Passed"
done
}
function pingpong_test()
{
LOC=$1
REM=$2
echo "Running ping pong tests on: $(basename $LOC) / $(basename $REM)"
LOC_START=$(read_file "$LOC/count")
REM_START=$(read_file "$REM/count")
sleep 7
LOC_END=$(read_file "$LOC/count")
REM_END=$(read_file "$REM/count")
if [[ $LOC_START == $LOC_END ]] || [[ $REM_START == $REM_END ]]; then
echo "Ping pong counter not incrementing!" >&2
exit 1
fi
echo " Passed"
}
function msi_test()
{
LOC=$1
REM=$2
write_file 1 $LOC/ready
echo "Running MSI interrupt tests on: $(subdirname $LOC) / $(subdirname $REM)"
CNT=$(read_file "$LOC/count")
for ((i = 0; i < $CNT; i++)); do
START=$(read_file $REM/../irq${i}_occurrences)
write_file $i $LOC/trigger
END=$(read_file $REM/../irq${i}_occurrences)
if [[ $(($END - $START)) != 1 ]]; then
echo "MSI did not trigger the interrupt on the remote side!" >&2
exit 1
fi
done
echo " Passed"
}
function perf_test()
{
USE_DMA=$1
if [[ $USE_DMA == "1" ]]; then
WITH="with"
else
WITH="without"
fi
_modprobe ntb_perf total_order=$PERF_RUN_ORDER \
max_mw_size=$MAX_MW_SIZE use_dma=$USE_DMA
echo "Running local perf test $WITH DMA"
write_file "$LOCAL_PIDX" "$LOCAL_PERF/run"
echo -n " "
read_file "$LOCAL_PERF/run"
echo " Passed"
echo "Running remote perf test $WITH DMA"
write_file "$REMOTE_PIDX" "$REMOTE_PERF/run"
echo -n " "
read_file "$REMOTE_PERF/run"
echo " Passed"
_modprobe -r ntb_perf
}
function ntb_tool_tests()
{
LOCAL_TOOL="$DEBUGFS/ntb_tool/$LOCAL_DEV"
REMOTE_TOOL="$REMOTE_HOST:$DEBUGFS/ntb_tool/$REMOTE_DEV"
echo "Starting ntb_tool tests..."
_modprobe ntb_tool
port_test "$LOCAL_TOOL" "$REMOTE_TOOL"
LOCAL_PEER_TOOL="$LOCAL_TOOL/peer$LOCAL_PIDX"
REMOTE_PEER_TOOL="$REMOTE_TOOL/peer$REMOTE_PIDX"
link_test "$LOCAL_PEER_TOOL" "$REMOTE_PEER_TOOL"
link_test "$REMOTE_PEER_TOOL" "$LOCAL_PEER_TOOL"
#Ensure the link is up on both sides before continuing
write_file "Y" "$LOCAL_PEER_TOOL/link_event"
write_file "Y" "$REMOTE_PEER_TOOL/link_event"
doorbell_test "$LOCAL_TOOL" "$REMOTE_TOOL"
doorbell_test "$REMOTE_TOOL" "$LOCAL_TOOL"
scratchpad_test "$LOCAL_PEER_TOOL" "$REMOTE_PEER_TOOL"
scratchpad_test "$REMOTE_PEER_TOOL" "$LOCAL_PEER_TOOL"
message_test "$LOCAL_PEER_TOOL" "$REMOTE_PEER_TOOL"
message_test "$REMOTE_PEER_TOOL" "$LOCAL_PEER_TOOL"
mw_test "$LOCAL_PEER_TOOL" "$REMOTE_PEER_TOOL"
mw_test "$REMOTE_PEER_TOOL" "$LOCAL_PEER_TOOL"
_modprobe -r ntb_tool
}
function ntb_pingpong_tests()
{
LOCAL_PP="$DEBUGFS/ntb_pingpong/$LOCAL_DEV"
REMOTE_PP="$REMOTE_HOST:$DEBUGFS/ntb_pingpong/$REMOTE_DEV"
echo "Starting ntb_pingpong tests..."
_modprobe ntb_pingpong
pingpong_test $LOCAL_PP $REMOTE_PP
_modprobe -r ntb_pingpong
}
function ntb_msi_tests()
{
LOCAL_MSI="$DEBUGFS/ntb_msi_test/$LOCAL_DEV"
REMOTE_MSI="$REMOTE_HOST:$DEBUGFS/ntb_msi_test/$REMOTE_DEV"
echo "Starting ntb_msi_test tests..."
if ! _modprobe ntb_msi_test 2> /dev/null; then
echo " Not doing MSI tests seeing the module is not available."
return
fi
port_test $LOCAL_MSI $REMOTE_MSI
LOCAL_PEER="$LOCAL_MSI/peer$LOCAL_PIDX"
REMOTE_PEER="$REMOTE_MSI/peer$REMOTE_PIDX"
msi_test $LOCAL_PEER $REMOTE_PEER
msi_test $REMOTE_PEER $LOCAL_PEER
_modprobe -r ntb_msi_test
}
function ntb_perf_tests()
{
LOCAL_PERF="$DEBUGFS/ntb_perf/$LOCAL_DEV"
REMOTE_PERF="$REMOTE_HOST:$DEBUGFS/ntb_perf/$REMOTE_DEV"
echo "Starting ntb_perf tests..."
perf_test 0
if [[ $RUN_DMA_TESTS ]]; then
perf_test 1
fi
}
function cleanup()
{
set +e
_modprobe -r ntb_tool 2> /dev/null
_modprobe -r ntb_perf 2> /dev/null
_modprobe -r ntb_pingpong 2> /dev/null
_modprobe -r ntb_transport 2> /dev/null
_modprobe -r ntb_msi_test 2> /dev/null
set -e
}
cleanup
if ! [[ $$DONT_CLEANUP ]]; then
trap cleanup EXIT
fi
if [ "$(id -u)" != "0" ]; then
echo "This script must be run as root" 1>&2
exit 1
fi
if [[ "$LIST_DEVS" == TRUE ]]; then
echo "Local Devices:"
ls -1 /sys/bus/ntb/devices
echo
if [[ "$REMOTE_HOST" != "" ]]; then
echo "Remote Devices:"
ssh $REMOTE_HOST ls -1 /sys/bus/ntb/devices
fi
exit 0
fi
if [[ "$LOCAL_DEV" == $"" ]] || [[ "$REMOTE_DEV" == $"" ]]; then
show_help
exit 1
fi
ntb_tool_tests
echo
ntb_pingpong_tests
echo
ntb_msi_tests
echo
ntb_perf_tests
echo
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