1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3
4# amd-pstate-ut is a test module for testing the amd-pstate driver.
5# It can only run on x86 architectures and current cpufreq driver
6# must be amd-pstate.
7# (1) It can help all users to verify their processor support
8# (SBIOS/Firmware or Hardware).
9# (2) Kernel can have a basic function test to avoid the kernel
10# regression during the update.
11# (3) We can introduce more functional or performance tests to align
12# the result together, it will benefit power and performance scale optimization.
13
14# Kselftest framework requirement - SKIP code is 4.
15ksft_skip=4
16
17# amd-pstate-ut only run on x86/x86_64 AMD systems.
18ARCH=$(uname -m 2>/dev/null | sed -e 's/i.86/x86/' -e 's/x86_64/x86/')
19VENDOR=$(cat /proc/cpuinfo | grep -m 1 'vendor_id' | awk '{print $NF}')
20
21if ! echo "$ARCH" | grep -q x86; then
22	echo "$0 # Skipped: Test can only run on x86 architectures."
23	exit $ksft_skip
24fi
25
26if ! echo "$VENDOR" | grep -iq amd; then
27	echo "$0 # Skipped: Test can only run on AMD CPU."
28	echo "$0 # Current cpu vendor is $VENDOR."
29	exit $ksft_skip
30fi
31
32scaling_driver=$(cat /sys/devices/system/cpu/cpufreq/policy0/scaling_driver)
33if [ "$scaling_driver" != "amd-pstate" ]; then
34	echo "$0 # Skipped: Test can only run on amd-pstate driver."
35	echo "$0 # Please set X86_AMD_PSTATE enabled."
36	echo "$0 # Current cpufreq scaling drvier is $scaling_driver."
37	exit $ksft_skip
38fi
39
40msg="Skip all tests:"
41if [ ! -w /dev ]; then
42    echo $msg please run this as root >&2
43    exit $ksft_skip
44fi
45
46if ! /sbin/modprobe -q -n amd-pstate-ut; then
47	echo "amd-pstate-ut: module amd-pstate-ut is not found [SKIP]"
48	exit $ksft_skip
49fi
50if /sbin/modprobe -q amd-pstate-ut; then
51	/sbin/modprobe -q -r amd-pstate-ut
52	echo "amd-pstate-ut: ok"
53else
54	echo "amd-pstate-ut: [FAIL]"
55	exit 1
56fi
57