ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/tools/testing/selftests/intel_pstate/.gitignore b/marvell/linux/tools/testing/selftests/intel_pstate/.gitignore
new file mode 100644
index 0000000..3bfcbae
--- /dev/null
+++ b/marvell/linux/tools/testing/selftests/intel_pstate/.gitignore
@@ -0,0 +1,2 @@
+aperf
+msr
diff --git a/marvell/linux/tools/testing/selftests/intel_pstate/Makefile b/marvell/linux/tools/testing/selftests/intel_pstate/Makefile
new file mode 100644
index 0000000..9fc1a40
--- /dev/null
+++ b/marvell/linux/tools/testing/selftests/intel_pstate/Makefile
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+CFLAGS := $(CFLAGS) -Wall -D_GNU_SOURCE
+LDLIBS := $(LDLIBS) -lm
+
+ARCH ?= $(shell uname -m 2>/dev/null || echo not)
+ARCH_PROCESSED := $(shell echo $(ARCH) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
+
+ifeq (x86,$(ARCH_PROCESSED))
+TEST_GEN_FILES := msr aperf
+endif
+
+TEST_PROGS := run.sh
+
+include ../lib.mk
+
+$(TEST_GEN_FILES): $(HEADERS)
diff --git a/marvell/linux/tools/testing/selftests/intel_pstate/aperf.c b/marvell/linux/tools/testing/selftests/intel_pstate/aperf.c
new file mode 100644
index 0000000..f6cd03a
--- /dev/null
+++ b/marvell/linux/tools/testing/selftests/intel_pstate/aperf.c
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <math.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/timeb.h>
+#include <sched.h>
+#include <errno.h>
+#include <string.h>
+#include "../kselftest.h"
+
+void usage(char *name) {
+ printf ("Usage: %s cpunum\n", name);
+}
+
+int main(int argc, char **argv) {
+ unsigned int i, cpu, fd;
+ char msr_file_name[64];
+ long long tsc, old_tsc, new_tsc;
+ long long aperf, old_aperf, new_aperf;
+ long long mperf, old_mperf, new_mperf;
+ struct timeb before, after;
+ long long int start, finish, total;
+ cpu_set_t cpuset;
+
+ if (argc != 2) {
+ usage(argv[0]);
+ return 1;
+ }
+
+ errno = 0;
+ cpu = strtol(argv[1], (char **) NULL, 10);
+
+ if (errno) {
+ usage(argv[0]);
+ return 1;
+ }
+
+ sprintf(msr_file_name, "/dev/cpu/%d/msr", cpu);
+ fd = open(msr_file_name, O_RDONLY);
+
+ if (fd == -1) {
+ printf("/dev/cpu/%d/msr: %s\n", cpu, strerror(errno));
+ return KSFT_SKIP;
+ }
+
+ CPU_ZERO(&cpuset);
+ CPU_SET(cpu, &cpuset);
+
+ if (sched_setaffinity(0, sizeof(cpu_set_t), &cpuset)) {
+ perror("Failed to set cpu affinity");
+ return 1;
+ }
+
+ ftime(&before);
+ pread(fd, &old_tsc, sizeof(old_tsc), 0x10);
+ pread(fd, &old_aperf, sizeof(old_mperf), 0xe7);
+ pread(fd, &old_mperf, sizeof(old_aperf), 0xe8);
+
+ for (i=0; i<0x8fffffff; i++) {
+ sqrt(i);
+ }
+
+ ftime(&after);
+ pread(fd, &new_tsc, sizeof(new_tsc), 0x10);
+ pread(fd, &new_aperf, sizeof(new_mperf), 0xe7);
+ pread(fd, &new_mperf, sizeof(new_aperf), 0xe8);
+
+ tsc = new_tsc-old_tsc;
+ aperf = new_aperf-old_aperf;
+ mperf = new_mperf-old_mperf;
+
+ start = before.time*1000 + before.millitm;
+ finish = after.time*1000 + after.millitm;
+ total = finish - start;
+
+ printf("runTime: %4.2f\n", 1.0*total/1000);
+ printf("freq: %7.0f\n", tsc / (1.0*aperf / (1.0 * mperf)) / total);
+ return 0;
+}
diff --git a/marvell/linux/tools/testing/selftests/intel_pstate/msr.c b/marvell/linux/tools/testing/selftests/intel_pstate/msr.c
new file mode 100644
index 0000000..88fdd2a
--- /dev/null
+++ b/marvell/linux/tools/testing/selftests/intel_pstate/msr.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <math.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/timeb.h>
+#include <sched.h>
+#include <errno.h>
+
+
+int main(int argc, char **argv) {
+ int cpu, fd;
+ long long msr;
+ char msr_file_name[64];
+
+ if (argc != 2)
+ return 1;
+
+ errno = 0;
+ cpu = strtol(argv[1], (char **) NULL, 10);
+
+ if (errno)
+ return 1;
+
+ sprintf(msr_file_name, "/dev/cpu/%d/msr", cpu);
+ fd = open(msr_file_name, O_RDONLY);
+
+ if (fd == -1) {
+ perror("Failed to open");
+ return 1;
+ }
+
+ pread(fd, &msr, sizeof(msr), 0x199);
+
+ printf("msr 0x199: 0x%llx\n", msr);
+ return 0;
+}
diff --git a/marvell/linux/tools/testing/selftests/intel_pstate/run.sh b/marvell/linux/tools/testing/selftests/intel_pstate/run.sh
new file mode 100755
index 0000000..e7008f6
--- /dev/null
+++ b/marvell/linux/tools/testing/selftests/intel_pstate/run.sh
@@ -0,0 +1,128 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# This test runs on Intel x86 based hardware which support the intel_pstate
+# driver. The test checks the frequency settings from the maximum turbo
+# state to the minimum supported frequency, in decrements of 100MHz. The
+# test runs the aperf.c program to put load on each processor.
+#
+# The results are displayed in a table which indicate the "Target" state,
+# or the requested frequency in MHz, the Actual frequency, as read from
+# /proc/cpuinfo, the difference between the Target and Actual frequencies,
+# and the value of MSR 0x199 (MSR_IA32_PERF_CTL) which indicates what
+# pstate the cpu is in, and the value of
+# /sys/devices/system/cpu/intel_pstate/max_perf_pct X maximum turbo state
+#
+# Notes: In some cases several frequency values may be placed in the
+# /tmp/result.X files. This is done on purpose in order to catch cases
+# where the pstate driver may not be working at all. There is the case
+# where, for example, several "similar" frequencies are in the file:
+#
+#
+#/tmp/result.3100:1:cpu MHz : 2899.980
+#/tmp/result.3100:2:cpu MHz : 2900.000
+#/tmp/result.3100:3:msr 0x199: 0x1e00
+#/tmp/result.3100:4:max_perf_pct 94
+#
+# and the test will error out in those cases. The result.X file can be checked
+# for consistency and modified to remove the extra MHz values. The result.X
+# files can be re-evaluated by setting EVALUATE_ONLY to 1 below.
+
+EVALUATE_ONLY=0
+
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+if ! uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ | grep -q x86; then
+ echo "$0 # Skipped: Test can only run on x86 architectures."
+ exit $ksft_skip
+fi
+
+msg="skip all tests:"
+if [ $UID != 0 ] && [ $EVALUATE_ONLY == 0 ]; then
+ echo $msg please run this as root >&2
+ exit $ksft_skip
+fi
+
+max_cpus=$(($(nproc)-1))
+
+function run_test () {
+
+ file_ext=$1
+ for cpu in `seq 0 $max_cpus`
+ do
+ echo "launching aperf load on $cpu"
+ ./aperf $cpu &
+ done
+
+ echo "sleeping for 5 seconds"
+ sleep 5
+ grep MHz /proc/cpuinfo | sort -u > /tmp/result.freqs
+ num_freqs=$(wc -l /tmp/result.freqs | awk ' { print $1 } ')
+ if [ $num_freqs -ge 2 ]; then
+ tail -n 1 /tmp/result.freqs > /tmp/result.$1
+ else
+ cp /tmp/result.freqs /tmp/result.$1
+ fi
+ ./msr 0 >> /tmp/result.$1
+
+ max_perf_pct=$(cat /sys/devices/system/cpu/intel_pstate/max_perf_pct)
+ echo "max_perf_pct $max_perf_pct" >> /tmp/result.$1
+
+ for job in `jobs -p`
+ do
+ echo "waiting for job id $job"
+ wait $job
+ done
+}
+
+#
+# MAIN (ALL UNITS IN MHZ)
+#
+
+# Get the marketing frequency
+_mkt_freq=$(cat /proc/cpuinfo | grep -m 1 "model name" | awk '{print $NF}')
+_mkt_freq=$(echo $_mkt_freq | tr -d [:alpha:][:punct:])
+mkt_freq=${_mkt_freq}0
+
+# Get the ranges from cpupower
+_min_freq=$(cpupower frequency-info -l | tail -1 | awk ' { print $1 } ')
+min_freq=$(($_min_freq / 1000))
+_max_freq=$(cpupower frequency-info -l | tail -1 | awk ' { print $2 } ')
+max_freq=$(($_max_freq / 1000))
+
+
+[ $EVALUATE_ONLY -eq 0 ] && for freq in `seq $max_freq -100 $min_freq`
+do
+ echo "Setting maximum frequency to $freq"
+ cpupower frequency-set -g powersave --max=${freq}MHz >& /dev/null
+ run_test $freq
+done
+
+[ $EVALUATE_ONLY -eq 0 ] && cpupower frequency-set -g powersave --max=${max_freq}MHz >& /dev/null
+
+echo "========================================================================"
+echo "The marketing frequency of the cpu is $mkt_freq MHz"
+echo "The maximum frequency of the cpu is $max_freq MHz"
+echo "The minimum frequency of the cpu is $min_freq MHz"
+
+# make a pretty table
+echo "Target Actual Difference MSR(0x199) max_perf_pct" | tr " " "\n" > /tmp/result.tab
+for freq in `seq $max_freq -100 $min_freq`
+do
+ result_freq=$(cat /tmp/result.${freq} | grep "cpu MHz" | awk ' { print $4 } ' | awk -F "." ' { print $1 } ')
+ msr=$(cat /tmp/result.${freq} | grep "msr" | awk ' { print $3 } ')
+ max_perf_pct=$(cat /tmp/result.${freq} | grep "max_perf_pct" | awk ' { print $2 } ' )
+ cat >> /tmp/result.tab << EOF
+$freq
+$result_freq
+$((result_freq - freq))
+$msr
+$((max_perf_pct * max_freq))
+EOF
+done
+
+# print the table
+pr -aTt -5 < /tmp/result.tab
+
+exit 0