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| -rwxr-xr-x | tools/testing/selftests/powerpc/scripts/hmi.sh | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/scripts/hmi.sh b/tools/testing/selftests/powerpc/scripts/hmi.sh new file mode 100755 index 000000000000..83fb253ae3bd --- /dev/null +++ b/tools/testing/selftests/powerpc/scripts/hmi.sh @@ -0,0 +1,89 @@ +#!/bin/sh +# +# Copyright 2015, Daniel Axtens, IBM Corporation +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + + +# do we have ./getscom, ./putscom? +if [ -x ./getscom ] && [ -x ./putscom ]; then + GETSCOM=./getscom + PUTSCOM=./putscom +elif which getscom > /dev/null; then + GETSCOM=$(which getscom) + PUTSCOM=$(which putscom) +else + cat <<EOF +Can't find getscom/putscom in . or \$PATH. +See https://github.com/open-power/skiboot. +The tool is in external/xscom-utils +EOF + exit 1 +fi + +# We will get 8 HMI events per injection +# todo: deal with things being offline +expected_hmis=8 +COUNT_HMIS() { + dmesg | grep -c 'Harmless Hypervisor Maintenance interrupt' +} + +# massively expand snooze delay, allowing injection on all cores +ppc64_cpu --smt-snooze-delay=1000000000 + +# when we exit, restore it +trap "ppc64_cpu --smt-snooze-delay=100" 0 1 + +# for each chip+core combination +# todo - less fragile parsing +egrep -o 'OCC: Chip [0-9a-f]+ Core [0-9a-f]' < /sys/firmware/opal/msglog | +while read chipcore; do + chip=$(echo "$chipcore"|awk '{print $3}') + core=$(echo "$chipcore"|awk '{print $5}') + fir="0x1${core}013100" + + # verify that Core FIR is zero as expected + if [ "$($GETSCOM -c 0x${chip} $fir)" != 0 ]; then + echo "FIR was not zero before injection for chip $chip, core $core. Aborting!" + echo "Result of $GETSCOM -c 0x${chip} $fir:" + $GETSCOM -c 0x${chip} $fir + echo "If you get a -5 error, the core may be in idle state. Try stress-ng." + echo "Otherwise, try $PUTSCOM -c 0x${chip} $fir 0" + exit 1 + fi + + # keep track of the number of HMIs handled + old_hmis=$(COUNT_HMIS) + + # do injection, adding a marker to dmesg for clarity + echo "Injecting HMI on core $core, chip $chip" | tee /dev/kmsg + # inject a RegFile recoverable error + if ! $PUTSCOM -c 0x${chip} $fir 2000000000000000 > /dev/null; then + echo "Error injecting. Aborting!" + exit 1 + fi + + # now we want to wait for all the HMIs to be processed + # we expect one per thread on the core + i=0; + new_hmis=$(COUNT_HMIS) + while [ $new_hmis -lt $((old_hmis + expected_hmis)) ] && [ $i -lt 12 ]; do + echo "Seen $((new_hmis - old_hmis)) HMI(s) out of $expected_hmis expected, sleeping" + sleep 5; + i=$((i + 1)) + new_hmis=$(COUNT_HMIS) + done + if [ $i = 12 ]; then + echo "Haven't seen expected $expected_hmis recoveries after 1 min. Aborting." + exit 1 + fi + echo "Processed $expected_hmis events; presumed success. Check dmesg." + echo "" +done |
