#!/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
<th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include?id=665153ff575207f3a092cfcea3c51238612a7b58&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-08 14:16:21 +0100'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=0b5a78749260560f41e3b7c1f60f2c7dd9aff4f0'>netfilter: nf_tables: add space notation to sets</a></td><td>Pablo Neira Ayuso</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-08 14:16:20 +0100'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=55af753cd9fda9c5300f5318253b08bd15fb412e'>netfilter: nf_tables: rename struct nft_set_estimate class field</a></td><td>Pablo Neira Ayuso</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-08 14:16:20 +0100'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=1f48ff6c5393aa7fe290faf5d633164f105b0aa7'>netfilter: nf_tables: add flush field to struct nft_set_iter</a></td><td>Pablo Neira Ayuso</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-08 14:16:19 +0100'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=1ba1c41408df8a9d2f8b9b67e4c9e6f59b29d8ee'>netfilter: nf_tables: rename deactivate_one() to flush()</a></td><td>Pablo Neira Ayuso</td><td>1</td><td><span class='deletions'>-4</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-08 14:16:18 +0100'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=5cb82a38c6b5152b1deaba0c1596ce63222a4710'>netfilter: nf_tables: pass netns to set-&gt;ops-&gt;remove()</a></td><td>Pablo Neira Ayuso</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-08 14:14:09 +0100'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783'>netfilter: nft_exthdr: Add support for existence check</a></td><td>Phil Sutter</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+6</span></td></tr>
<tr><td><span title='2017-02-03 17:28:29 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=79e7fff47b7bb4124ef970a13eac4fdeddd1fc25'>net: remove support for per driver ndo_busy_poll()</a></td><td>Eric Dumazet</td><td>2</td><td><span class='deletions'>-5</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-03 16:58:20 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=52e01b84a244473074fc0612c169e2e043d58b01'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next</a></td><td>David S. Miller</td><td>11</td><td><span class='deletions'>-40</span>/<span class='insertions'>+60</span></td></tr>
<tr><td><span title='2017-02-03 16:35:43 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=69ca05ce9dec2cc95070df7f1f10ea6c9c12d237'>sched: cls_flower: expose priority to offloading netdevice</a></td><td>Jiri Pirko</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-03 16:35:42 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=44091d29f2075972aede47ef17e1e70db3d51190'>lib: Introduce priority array area manager</a></td><td>Jiri Pirko</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+76</span></td></tr>
<tr><td><span title='2017-02-03 16:35:42 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=b862815c3ee7b49ec20a9ab25da55a5f0bcbb95e'>list: introduce list_for_each_entry_from_reverse helper</a></td><td>Jiri Pirko</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+13</span></td></tr>
<tr><td><span title='2017-02-03 15:50:18 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=3898fac1f488c76e0eef5b5267b4ba8112a82ac4'>trace: rename trace_print_hex_seq arg and add kdoc</a></td><td>Daniel Borkmann</td><td>2</td><td><span class='deletions'>-3</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-03 15:21:21 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=b3c7ef0adadc5768e0baa786213c6bd1ce521a77'>bridge: uapi: add per vlan tunnel info</a></td><td>Roopa Prabhu</td><td>3</td><td><span class='deletions'>-0</span>/<span class='insertions'>+13</span></td></tr>
<tr><td><span title='2017-02-03 15:21:21 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=3ad7a4b141ebd6091494913672d7166d5c2764e4'>vxlan: support fdb and learning in COLLECT_METADATA mode</a></td><td>Roopa Prabhu</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-03 15:21:21 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=f35581d64e55fc65753a62957b3b98127d560d07'>ip_tunnels: new IP_TUNNEL_INFO_BRIDGE flag for ip_tunnel_info mode</a></td><td>Roopa Prabhu</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-03 15:16:46 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=295a6e06d21e1f469c9f38b00125a13b60ad4e7c'>net/sched: act_ife: Change to use ife module</a></td><td>Yotam Gigi</td><td>2</td><td><span class='deletions'>-10</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-03 15:16:45 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=1ce8460496c05379c66edc178c3c55ca4e953044'>net: Introduce ife encapsulation module</a></td><td>Yotam Gigi</td><td>3</td><td><span class='deletions'>-0</span>/<span class='insertions'>+70</span></td></tr>
<tr><td><span title='2017-02-03 15:16:45 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=1d5e7c859e81a66674d194c346119d154d31e9dc'>net/sched: act_ife: Unexport ife_tlv_meta_encode</a></td><td>Yotam Gigi</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-03 11:19:34 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=3541f9e8bdebce02458882b66b638d7302c1f616'>tcp: add tcp_mss_clamp() helper</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+9</span></td></tr>
<tr><td><span title='2017-02-02 23:34:19 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=8fe809a992639b2013c0d8da2ba55cdea28a959a'>net: add LINUX_MIB_PFMEMALLOCDROP counter</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-02 22:05:28 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=60f06fde4cff6f6134decbf09199b5e047bc3355'>net: phy: marvell: Add support for 88e1545 PHY</a></td><td>Andrew Lunn</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-02 21:58:02 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=ba94f3088b792b16ea576a256a6030feddc87f24'>unix: add ioctl to open a unix socket file with O_PATH</a></td><td>Andrey Vagin</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-02 21:50:51 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=e4cf8a38fc0d257b4070066e46a678f4777fecaa'>net: phy: Marvell: Add mv88e6390 internal PHY</a></td><td>Andrew Lunn</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+6</span></td></tr>
<tr><td><span title='2017-02-02 16:54:00 -0500'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=e2160156bf2a7d5018e99a9993fbcdda0abac09b'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>David S. Miller</td><td>9</td><td><span class='deletions'>-30</span>/<span class='insertions'>+40</span></td></tr>
<tr><td><span title='2017-02-02 14:31:58 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=2851940ffee313e0ff12540a8e11a8c54dea9c65'>netfilter: allow logging from non-init namespaces</a></td><td>Michal Kubeček</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-02 14:31:57 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=90c1aff702d449a1a248c4829d51c0bc677f968e'>ipvs: free ip_vs_dest structs when refcnt=0</a></td><td>David Windsor</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-02 14:31:56 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=a9e419dc7be6997409dca6d1b9daf3cc7046902f'>netfilter: merge ctinfo into nfct pointer storage area</a></td><td>Florian Westphal</td><td>2</td><td><span class='deletions'>-17</span>/<span class='insertions'>+15</span></td></tr>
<tr><td><span title='2017-02-02 14:31:55 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=303223092081963513494b4377fa1ac9e362ed4b'>netfilter: guarantee 8 byte minalign for template addresses</a></td><td>Florian Westphal</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-02 14:31:54 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=c74454fadd5ea6fc866ffe2c417a0dba56b2bf1c'>netfilter: add and use nf_ct_set helper</a></td><td>Florian Westphal</td><td>2</td><td><span class='deletions'>-2</span>/<span class='insertions'>+9</span></td></tr>
<tr><td><span title='2017-02-02 14:31:53 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=cb9c68363efb6d1f950ec55fb06e031ee70db5fc'>skbuff: add and use skb_nfct helper</a></td><td>Florian Westphal</td><td>2</td><td><span class='deletions'>-4</span>/<span class='insertions'>+11</span></td></tr>
<tr><td><span title='2017-02-02 14:31:52 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=97a6ad13decc16c5adbf181283932daba7e17faf'>netfilter: reduce direct skb-&gt;nfct usage</a></td><td>Florian Westphal</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+6</span></td></tr>
<tr><td><span title='2017-02-02 14:31:51 +0100'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=11df4b760f11ca7528c62b1c4b870735d1c62116'>netfilter: conntrack: no need to pass ctinfo to error handler</a></td><td>Florian Westphal</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>