tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0-or-later
3
4set -e
5
6TESTNAME=set_pcie_speed
7
8declare -a PCIELINKSPEED=(
9 "2.5 GT/s PCIe"
10 "5.0 GT/s PCIe"
11 "8.0 GT/s PCIe"
12 "16.0 GT/s PCIe"
13 "32.0 GT/s PCIe"
14 "64.0 GT/s PCIe"
15)
16
17# Kselftest framework requirement - SKIP code is 4.
18ksft_skip=4
19retval=0
20
21coolingdev="$1"
22statefile="$coolingdev/cur_state"
23maxfile="$coolingdev/max_state"
24linkspeedfile="$2"
25
26oldstate=`cat $statefile`
27maxstate=`cat $maxfile`
28
29set_state()
30{
31 local state=$1
32 local linkspeed
33 local expected_linkspeed
34
35 echo $state > $statefile
36
37 sleep 1
38
39 linkspeed="`cat $linkspeedfile`"
40 expected_linkspeed=$((maxstate-state))
41 expected_str="${PCIELINKSPEED[$expected_linkspeed]}"
42 if [ ! "${expected_str}" = "${linkspeed}" ]; then
43 echo "$TESTNAME failed: expected: ${expected_str}; got ${linkspeed}"
44 retval=1
45 fi
46}
47
48cleanup_skip ()
49{
50 set_state $oldstate
51 exit $ksft_skip
52}
53
54trap cleanup_skip EXIT
55
56echo "$TESTNAME: testing states $maxstate .. $oldstate with $coolingdev"
57for i in $(seq $maxstate -1 $oldstate); do
58 set_state "$i"
59done
60
61trap EXIT
62if [ $retval -eq 0 ]; then
63 echo "$TESTNAME [PASS]"
64else
65 echo "$TESTNAME [FAIL]"
66fi
67exit $retval