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s0ix-selftest-tool.sh
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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-only
# This is a CPU Package C-state and S0ix failure selftest and debug script, it's
# designed for Linux OS running on Intel® Architecture-based client platforms.
# Aims to get the potential Package C-state or S0ix blocker clue in an easy way.
# Helps Linux users save the basic isolation effort to focus on the advanced debug
# or report a bug with the initial debug log attached.
# Copyright (c) 2021 Intel Corporation.
# Author: wendy.wang@intel.com
# Contributor: david.e.box@intel.com
PATH=$PATH:$HOME
DATE=$(date '+%Y%m%d-%H-%M')
DIR="$(pwd -P)"
TURBO_COLUMNS="CPU%c1,CPU%c6,CPU%c7,GFX%rc6,Pkg%pc2,Pkg%pc3,Pkg%pc6,Pkg%pc7,Pkg%pc8,Pkg%pc9,Pk%pc10,SYS%LPI"
DEEP="S0i2.0"
SHALLOW="c10"
PMC_CORE_SYSFS_PATH="/sys/kernel/debug/pmc_core"
PCIEPORT_D0=""
PCIEPORT_D3HOT=""
PCIEPORT_L0=""
ASPM_ENABLE=""
#Define which debug stage should go
DEBUG=""
touch "$PWD"/"$DATE"-s0ix-output.log
#Function to archive S0ix debug output
log_output() {
echo -e "${*}" | tee -a "$PWD"/"$DATE"-s0ix-output.log
}
#Define script must be run as root account
if [[ $EUID -ne 0 ]]; then
log_output "\nThis script must be run as root.\n" >&2
exit 0
fi
usage() {
cat <<EOF
Usage: ./${0##*/} [-s|h][-r on][-r off]
-r: Check PC10 residency during runtime with screen on or screen off
-s: Check S0ix residency during S2idle
-h: Display help
EOF
}
runtime=0
s2idle=0
#Promote the usage info when there is no option placed
if [[ $# -lt 1 ]]; then
usage && exit 1
fi
while getopts r:sh opt; do
case $opt in
r)
runtime=$OPTARG
;;
s)
s2idle=1
;;
h)
usage && exit 1
;;
*)
echo "Invalid option argument." && usage && exit 1
;;
esac
done
#Function to check whether slp_s0 is supported on the test platform
slp_s0_support() {
local lp=""
acpidump 1>/dev/null 2>&1 || {
log_output "The acpidump tool is needed to check whether low idle S0 \
\ncapability is enabled on the test platform, please install acpica-tools \
\nor check if the acpidump command execution failed.\n"
exit 0
}
acpidump -b 2>&1
iasl -d ./facp.dat 1>/dev/null 2>&1
sleep 2
lp=$(grep "Low Power S0 Idle" facp.dsl 2>&1 | awk '{print $(NF)}')
if [[ "$lp" -eq 1 ]]; then
log_output "\nLow Power S0 Idle is:$lp"
log_output "Your system supports low power S0 idle capability."
return 0
else
log_output "\nLow Power S0 Idle is:$lp"
log_output "Your system does not support low power S0 idle capability. \
\nIsolation suggestion: \
\nPlease check BIOS low power S0 idle capability setting.\n"
return 1
fi
}
#Judge whether intel_pmc_core sysfs debug files available
pmc_core_check() {
if [[ "$(ls -A $PMC_CORE_SYSFS_PATH)" ]]; then
log_output "\nThe pmc_core debug sysfs files are OK on your system."
return 0
else
log_output "\nThe pmc_core debug sysfs file is empty on your system."
log_output "Isolation suggestions: \
\nPlease check whether intel_pmc_core driver is loaded.\n"
return 1
fi
}
pci_d3_status_check() {
local duration=10
local d3_log=""
local pcieport_ds=""
local pci_tree=""
pci_tree=$(lspci -tvv)
#Prepare for the PCI Device D3 states check
echo -n "file pci-driver.c +p" >/sys/kernel/debug/dynamic_debug/control
echo N >/sys/module/printk/parameters/console_suspend
echo 1 >/sys/power/pm_debug_messages
dmesg -C
echo 0 >/sys/class/rtc/rtc0/wakealarm
echo +$duration >/sys/class/rtc/rtc0/wakealarm
"$DIR"/turbostat --quiet -o tc.out echo freeze 2>&1 >/sys/power/state
sleep 2
d3_log=$(dmesg | grep "PCI PM" 2>&1)
if [[ -n "$d3_log" ]]; then
log_output "\nChecking PCI Devices D3 States:\n$d3_log\n"
log_output "\nChecking PCI Devices tree diagram:\n$pci_tree\n"
fi
#Filter out the pcieport devices D states
pcieport_ds=$(echo "$d3_log" | grep -o "pcieport.*")
if [[ -n "$pcieport_ds" ]]; then
PCIEPORT_D0=$(echo "$pcieport_ds" | grep D0 |
awk -F " " '{print $2}' | sed 's/:$//')
PCIEPORT_D3HOT=$(echo "$pcieport_ds" | grep D3hot |
awk -F " " '{print $2}' | sed 's/:$//')
#Check the ASPM enable status for the D0 state pcieroot port
if [[ -n "$PCIEPORT_D0" ]]; then
ASPM_ENABLE=$(lspci -vvv -s"$PCIEPORT_D0" | grep "LnkCtl:" | grep Enabled)
log_output "The pcieport $PCIEPORT_D0 ASPM enable status:\n$ASPM_ENABLE\n"
fi
[[ -n "$PCIEPORT_D0" ]] && log_output "Pcieport is not in D3cold：\
\n\033[31m$PCIEPORT_D0\033[0m\n"
[[ -n "$PCIEPORT_D3HOT" ]] && log_output "Pcieport is not in D3cold: \
\n\033[31m$PCIEPORT_D3HOT\033[0m\n"
return 1
fi
return 0
}
#Function to automatically triage the potential deeper S0ix substate blockers
#through Intel_PMC_Core files: lpm_latch_mode and substate_requirements
#$1 is the archivable PC10 or shallower S0ix substate
#$2 is the deeper desired but not achieved S0ix substate
substate_triage() {
local col=""
local duration=15
local sub=""
local sta=""
local req=""
log_output "\n---Begin S0ix Substate Debug by substate_requirements---:\n"
#Before testing, need to clean the lpm_latch_mode setting
echo clear >"$PMC_CORE_SYSFS_PATH"/lpm_latch_mode 2>&1
log_output "Clear lpm_latch_mode is Done\n"
#Put $1 achieved PC10 or S0ix substate into lpm_latch_mode file
echo "$1" >"$PMC_CORE_SYSFS_PATH"/lpm_latch_mode 2>&1
log_output "Set $1 to lpm_latch_mode is Done\n"
log_output "Need to run once S2idle, please wait for 15 seconds...\n"
echo 0 >/sys/class/rtc/rtc0/wakealarm
echo +$duration >/sys/class/rtc/rtc0/wakealarm
"$DIR"/turbostat --quiet --show "$TURBO_COLUMNS" -o tc.out \
echo freeze 2>&1 >/sys/power/state
sleep 2
#Filter out the desired deeper S0ix substate column:col
eval "$(cat "$PMC_CORE_SYSFS_PATH"/substate_requirements | awk -F "|" '{
for(i=1;i<NF;i++)
{
$i = gensub(/^[ \t]*|[ \t]*$/,"","g",$i)
if($i == "'"$2"'")
printf("col=%d\n",i)
}
exit 0
}')" 2>&1
log_output "\nsubstate_requirements file shows:\n"
req="$(cat "$PMC_CORE_SYSFS_PATH"/substate_requirements | awk -F "|" \
'!/Int_Timer/ && !/LSX_Wake/ && !/VNN_REQ_STS/{print $1,$"'"${col}"'",$(NF-1)}')" 2>&1
log_output "$req"
#Filter out the IPs which are required but not show YES
sub="$(cat "$PMC_CORE_SYSFS_PATH"/substate_requirements | awk -F "|" \
'!/Int_Timer/ && !/LSX_Wake/ && !/VNN_REQ_STS/{print $1,$"'"${col}"'",$(NF-1)}' |
grep Required | awk '!/Yes/{print $0}')" 2>&1
if [[ -z "$sub" ]]; then
sta=$(cat "$PMC_CORE_SYSFS_PATH"/substate_status_registers)
log_output "\nDid not detect the potential blockers from substate_requirements, \
\nneed to check substate_status_registers file for the advanced debug.\n"
log_output "substate_status_registers:"
log_output "$sta"
return 0
else
log_output "\nBelow are the deeper S0ix substate required IPs did not show YES:\n"
log_output "\033[31m $sub \033[0m \n"
return 1
fi
}
#Function to check whether Intel graphics DMC FW load status on the test platform
dmc_check() {
local dmc_load=""
local dmc_log=""
dmc_load=$(grep "fw loaded" /sys/kernel/debug/dri/0/i915_dmc_info | head -n 1 |
awk '{print $3}')
dmc_log=$(dmesg | grep -i DMC 2>&1)
if [[ $dmc_load == yes ]]; then
log_output "\nYour system Intel graphics DMC FW loaded status is:$dmc_load
$dmc_log"
return 0
else
log_output "\n\033[31mYour system loaded Intel i915 DMC FW is not the latest \
version, \nor you did not install the DMC FW correctly: \n$dmc_log,
\nplease refer to \
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915 \
\nto get the latest display DMC FW. \
\nor re-install the Firmware package or manually check DMC FW file from /lib/firmware/i915.
\nIf you are running with CentOS, try the command: \
#dracut -i /lib/firmware/i915 /lib/firmware/i915 --force and reboot.\n\033[0m"
return 1
fi
}
#Function to check runtime PC10 state when screen on
pc10_idle_on() {
local runtime_pkg10=""
local turbostat_runtime=""
local pc10_para="CPU%c1,CPU%c6,CPU%c7,GFX%rc6,Pkg%pc2,Pkg%pc3,Pkg%pc6,Pkg%pc7,Pkg%pc8,Pkg%pc9,Pk%pc10"
log_output "\nThe system will keep idle for 40 seconds then check runtime PC10 state:\n"
sleep 40
turbostat_runtime=$("$DIR"/turbostat --quiet --show "$pc10_para" sleep 30 2>&1)
runtime_pkg10=$(echo "$turbostat_runtime" | sed -n '/Pk\%pc10/{n;p}' |
awk '{print $11}')
log_output "\nThe CPU runtime PC10 residency when screen ON: $runtime_pkg10%\n"
log_output "\nTurbostat log: \n$turbostat_runtime\n"
#Judge whether turbostat tool supports the test platform
if [ -z "$runtime_pkg10" ]; then
log_output "\nYour system installed turbostat tool does not support this \
test platform. \
\nplease try to get the latest version turbostat tool.\n"
exit 0
fi
if [[ -n "$runtime_pkg10" ]] && [[ "$(echo "scale=2; $runtime_pkg10 > 90.00" |
bc)" -eq 1 ]]; then
log_output "\n\033[32mYour system achieved high runtime PC10 residency during screen ON: \
$runtime_pkg10%\033[0m\n"
return 0
elif
[[ -n "$runtime_pkg10" ]] &&
[[ "$(echo "scale=2; $runtime_pkg10 > 50.00" | bc)" -eq 1 ]] &&
[[ "$(echo "scale=2; $runtime_pkg10 < 90.00" | bc)" -eq 1 ]]
then
log_output "\nYour system achieved runtime PC10 during screen ON, \
\nbut the residency is not high enough: $runtime_pkg10%\n"
return 0
elif
[[ -n "$runtime_pkg10" ]] &&
[[ "$(echo "scale=2; $runtime_pkg10 > 0.00" | bc)" -eq 1 ]] &&
[[ "$(echo "scale=2; $runtime_pkg10 < 50.00" | bc)" -eq 1 ]]
then
log_output "\n\033[31mYour system achieved the runtime PC10 during screen ON, \
\nbut the residency is too low and need to do the further debugging: \
$runtime_pkg10%\033[0m\n"
return 1
fi
log_output "\n\033[31mYour system did not achieve the runtime PC10 state \
during screen ON\033[0m\n"
return 1
}
#Function to check runtime PC10 residency when screen OFF
pc10_idle_off() {
local pc10_para="CPU%c1,CPU%c6,CPU%c7,GFX%rc6,Pkg%pc2,Pkg%pc3,Pkg%pc6,Pkg%pc7,Pkg%pc8,Pkg%pc9,Pk%pc10"
log_output "\nThis script will turn off display using xset command, \
\nplease startx first, then run this script in xterminal.\n"
#Turn off display using xset command in GUI
xset +dpms 2>&1 || {
log_output "\033[31mPlease run this runtime PC10 check after startx\033[0m\n"
exit 0
}
log_output "\nWill turn off the display in 30 seconds timeout, then the \
\nturbostat tool will read the PC10 counter after 40 seconds idle...\n"
xset dpms 30
local runtime_pkg10=""
local turbostat_runtime=""
sleep 40
turbostat_runtime=$("$DIR"/turbostat --quiet --show "$pc10_para" sleep 35 2>&1)
runtime_pkg10=$(echo "$turbostat_runtime" | sed -n '/Pk\%pc10/{n;p}' |
awk '{print $11}')
log_output "The CPU runtime PC10 state when screen OFF: $runtime_pkg10%"
log_output "\nTurbostat log: \n$turbostat_runtime\n"
#Judge whether turbostat tool supports the test platform
if [[ -z "$runtime_pkg10" ]]; then
log_output "\nYour system installed turbostat tool does not support this
test platform. \
\nplease try to get the latest version turbostat tool.\n"
exit 0
fi
if [[ -n "$runtime_pkg10" ]] &&
[[ "$(echo "scale=2; $runtime_pkg10 > 90.00" | bc)" -eq 1 ]]; then
log_output "\n\033[32mYour system achieved the high runtime PC10 residency during \
screen OFF: $runtime_pkg10%\033[0m\n"
xset dpms force on && xset -dpms
return 0
elif
[[ -n "$runtime_pkg10" ]] &&
[[ "$(echo "scale=2; $runtime_pkg10 > 50.00" | bc)" -eq 1 ]] &&
[[ "$(echo "scale=2; $runtime_pkg10 < 90.00" | bc)" -eq 1 ]]
then
log_output "\nYour system achieved the runtime PC10 during screen OFF, \
\nbut the residency is not high enough: $runtime_pkg10%\n"
xset dpms force on && xset -dpms
return 0
elif
[[ -n "$runtime_pkg10" ]] &&
[[ "$(echo "scale=2; $runtime_pkg10 > 0.00" | bc)" -eq 1 ]] &&
[[ "$(echo "scale=2; $runtime_pkg10 < 50.00" | bc)" -eq 1 ]]
then
log_output "\n\033[31mYour system achieved the runtime PC10 state during Screen OFF, \
\nbut is the residency is too low and need to do the further debugging: \
$runtime_pkg10%\033[0m\n"
xset dpms force on && xset -dpms
return 1
fi
log_output "\n\033[31mYour system did not achieve the runtime PC10 state \
with screen OFF\033[0m\n"
xset dpms force on && xset -dpms
return 1
}
#Function to check which package c-state or S0ix state is available during S2idle
pkg_output() {
local rc6=""
local cc7=""
local pkg2=""
local pkg8=""
local pkg9=""
local pkg10=""
local slp_s0=""
local turbostat_after_s2idle=""
local duration=15
local sub_enable_flag=""
local sub_bf_enable=""
local sub_af_enable=""
local sub_num=""
local sub_bf=""
local sub_bf_res=""
local subarraybf=""
local resarraybf=""
local subarrayaf=""
local resarrayaf=""
local resdeltaarray=""
local s0ix_substate=""
local s0ix_substate_af=""
local sub_af=""
local sub_af_res=""
local shallower=""
local deeper=""
s0ix_substate="$(cat $PMC_CORE_SYSFS_PATH/substate_residencies)" 2>&1
sub_enable_flag="$(grep "Enabled" $PMC_CORE_SYSFS_PATH/substate_residencies)" 2>&1
if [[ -n "$s0ix_substate" ]] && [[ -z "$sub_enable_flag" ]]; then
sub_num="$(echo "$s0ix_substate" | wc -l)"
for ((i = 2; i <= sub_num; i++)); do
sub_bf="$(sed -n "$i, 1p" $PMC_CORE_SYSFS_PATH/substate_residencies |
awk '{print $1}')"
subarraybf[i]=$sub_bf
sub_bf_res="$(sed -n "$i,1p" $PMC_CORE_SYSFS_PATH/substate_residencies |
awk '{print $2}')"
resarraybf[i]=$sub_bf_res
done
#Print out the subarray and resarray contents
log_output "\nTest system supports S0ix.y substate"
log_output "\nS0ix substate before S2idle:\n" "${subarraybf[*]}"
log_output "\nS0ix substate residency before S2idle:\n" "${resarraybf[*]}"
elif
[[ -n "$s0ix_substate" ]] && [[ -n "$sub_enable_flag" ]]
then
sub_num="$(echo "$s0ix_substate" | grep -c "Enabled")"
for ((i = 1; i <= sub_num; i++)); do
sub_bf_enable="$(grep "Enabled" $PMC_CORE_SYSFS_PATH/substate_residencies)"
sub_bf="$(echo "$sub_bf_enable" | sed -n "$i,1p" | awk '{print $2}')"
subarraybf[i]=$sub_bf
sub_bf_res="$(echo "$sub_bf_enable" | sed -n "$i,1p" | awk '{print $3}')"
resarraybf[i]=$sub_bf_res
done
#Print out the subarray and resarray contents
log_output "\nTest system supports S0ix.y substate"
log_output "\nS0ix substate before S2idle:\n" "${subarraybf[*]}"
log_output "\nS0ix substate residency before S2idle:\n" "${resarraybf[*]}"
else
log_output "Test system does not support S0ix.y substate"
fi
echo 0 >/sys/class/rtc/rtc0/wakealarm
echo +$duration >/sys/class/rtc/rtc0/wakealarm
if turbostat_after_s2idle=$("$DIR"/turbostat --quiet --show "$TURBO_COLUMNS" \
echo freeze 2>&1 >/sys/power/state); then
log_output "\nTurbostat output: \n$turbostat_after_s2idle"
#Let system sleep 5 seconds in case some systems cannot finish S0ix substate
#and pkg cstate judgement before entering next S2idle cycle.
sleep 5
else
log_output "\n\033[31mThe system failed to place S2idle entry command by turbostat, \
\nplease check if the suspend is failed or turbostat tool version is old \
\ne.g. did you make turbostat tool executable or separately run S2idle command: \
\nrtcwake -m freeze -s 15\033[0m\n"
exit 0
fi
cc7=$(echo "$turbostat_after_s2idle" | sed -n '/CPU\%c7/{n;p}' |
awk '{print $3}')
log_output "\nCPU Core C7 residency after S2idle is: $cc7"
rc6=$(echo "$turbostat_after_s2idle" | sed -n '/GFX\%rc6/{n;p}' |
awk '{print $4}')
log_output "GFX RC6 residency after S2idle is: $rc6"
if [ -z "$rc6" ]; then
pkg2=$(echo "$turbostat_after_s2idle" | sed -n '/Pkg\%pc2/{n;p}' |
awk '{print $4}')
log_output "CPU Package C-state 2 residency after S2idle is: $pkg2"
pkg3=$(echo "$turbostat_after_s2idle" | sed -n '/Pkg\%pc3/{n;p}' |
awk '{print $5}')
log_output "CPU Package C-state 3 residency after S2idle is: $pkg3"
pkg8=$(echo "$turbostat_after_s2idle" | sed -n '/Pkg\%pc8/{n;p}' |
awk '{print $8}')
log_output "CPU Package C-state 8 residency after S2idle is: $pkg8"
pkg9=$(echo "$turbostat_after_s2idle" | sed -n '/Pkg\%pc9/{n;p}' |
awk '{print $9}')
log_output "CPU Package C-state 9 residency after S2idle is: $pkg9"
pkg10=$(echo "$turbostat_after_s2idle" | sed -n '/Pk\%pc10/{n;p}' |
awk '{print $10}')
log_output "CPU Package C-state 10 residency after S2idle is: $pkg10"
slp_s0=$(echo "$turbostat_after_s2idle" | sed -n '/SYS\%LPI/{n;p}' |
awk '{print $11}')
log_output "S0ix residency after S2idle is: $slp_s0"
else
pkg2=$(echo "$turbostat_after_s2idle" | sed -n '/Pkg\%pc2/{n;p}' |
awk '{print $5}')
log_output "CPU Package C-state 2 residency after S2idle is: $pkg2"
pkg3=$(echo "$turbostat_after_s2idle" | sed -n '/Pkg\%pc3/{n;p}' |
awk '{print $6}')
log_output "CPU Package C-state 3 residency after S2idle is: $pkg3"
pkg8=$(echo "$turbostat_after_s2idle" | sed -n '/Pkg\%pc8/{n;p}' |
awk '{print $9}')
log_output "CPU Package C-state 8 residency after S2idle is: $pkg8"
pkg9=$(echo "$turbostat_after_s2idle" | sed -n '/Pkg\%pc9/{n;p}' |
awk '{print $10}')
log_output "CPU Package C-state 9 residency after S2idle is: $pkg9"
pkg10=$(echo "$turbostat_after_s2idle" | sed -n '/Pk\%pc10/{n;p}' |
awk '{print $11}')
log_output "CPU Package C-state 10 residency after S2idle is: $pkg10"
slp_s0=$(echo "$turbostat_after_s2idle" | sed -n '/SYS\%LPI/{n;p}' |
awk '{print $12}')
log_output "S0ix residency after S2idle is: $slp_s0"
fi
s0ix_substate_af="$(cat $PMC_CORE_SYSFS_PATH/substate_residencies)" 2>&1
if [[ -z "$s0ix_substate_af" ]] &&
[[ "$(echo "scale=2; $slp_s0 > 0.00" | bc)" -eq 1 ]]; then
log_output "\n\033[32mCongratulations! Your system achieved S2idle S0ix \
residency: $slp_s0\033[0m\n"
exit 0
elif [[ -n "$s0ix_substate" ]] &&
[[ "$(echo "scale=2; $slp_s0 > 0.00" | bc)" -eq 1 ]] &&
[[ -z "$sub_enable_flag" ]]; then
OLD_IFS="$IFS"
IFS=$'\n'
sub_num="$(echo "$s0ix_substate_af" | wc -l)"
for ((j = 2; j <= sub_num; j++)); do
sub_af="$(sed -n "$j, 1p" "$PMC_CORE_SYSFS_PATH"/substate_residencies | awk '{print $1}')"
subarrayaf[j]=$sub_af
sub_af_res="$(sed -n "$j,1p" "$PMC_CORE_SYSFS_PATH"/substate_residencies | awk '{print $2}')"
resarrayaf[j]=$sub_af_res
done
IFS="$OLD_IFS"
#Print out the subarrayaf and resarrayaf
log_output "\nS0ix substate after S2idle:\n" "${subarrayaf[*]}"
log_output "\nS0ix substate residency after S2idle:\n" "${resarrayaf[*]}"
#Judge the substate residency delta
for ((k = 2; k <= sub_num; k++)); do
OLD_IFS="$IFS"
IFS=$'\n'
resdeltaarray[$k]=$((resarrayaf[k] - resarraybf[k]))
IFS="$OLD_IFS"
log_output "\nS0ix substates residency delta value:" \
"${subarrayaf[$k]}" "${resdeltaarray[$k]}"
done
#Scan resdeltaarray and judge which one has no-zero value
m=${#resdeltaarray[@]}
while [ $m -ge 2 ]; do
if [[ "${resdeltaarray[m]}" -gt "0" ]]; then
if [[ "$m" -eq "${#resdeltaarray[@]}" ]]; then
log_output "\n\033[32mCongratulations! Your system achieved the deepest \
S0ix substate!\033[0m \
\nHere is the S0ix substates status: \n$s0ix_substate_af\n"
exit 0
else
OLD_IFS="$IFS"
IFS=$'\n'
shallower=${subarrayaf[m]}
n=$((m + 1))
deeper=${subarrayaf[n]}
IFS="$OLD_IFS"
log_output "\n\033[31mYour system only get shallower S0ix substate \
residency:\033[0m" "\033[31m${subarrayaf[m]}\033[0m" "\033[31m${resarrayaf[m]}\033[0m"
log_output "\nNeed to debug why not deeper substate:" "$deeper"
if substate_triage "$shallower" "$deeper"; then
log_output "\n\033[31mPlease do the advanced debug based on above \
substate_status_registers info \nor report a bug with that attached.\033[0m\n"
log_output "\n---Debug PCIe root port device and link PM state---"
#Check PCI devices D states
pci_d3_status_check
#Check PCIe bridge link PM states
debug_pcie_bridge_lpm
judge_dstate_linkstate
else
log_output "\nPlease check the potential blockers\n"
fi
exit 0
fi
else
let m--
fi
done
exit 0
elif [[ -n "$s0ix_substate" ]] &&
[[ "$(echo "scale=2; $slp_s0 > 0.00" | bc)" -eq 1 ]] &&
[[ -n "$sub_enable_flag" ]]; then
OLD_IFS="$IFS"
IFS=$'\n'
sub_num="$(echo "$s0ix_substate_af" | grep -c "Enabled")"
for ((j = 1; j <= sub_num; j++)); do
sub_af_enable="$(grep "Enabled" $PMC_CORE_SYSFS_PATH/substate_residencies)"
sub_af="$(echo "$sub_af_enable" | sed -n "$j,1p" | awk '{print $2}')" subarrayaf[j]=$sub_af
sub_af_res="$(echo "$sub_af_enable" | sed -n "$j,1p" | awk '{print $3}')" resarrayaf[j]=$sub_af_res
done
IFS="$OLD_IFS"
#Print out subarrayaf and resarrayaf
log_output "\nS0ix substate after S2idle:\n" "${subarrayaf[*]}"
log_output "\nS0ix substate residency after S2idle:\n" "${resarrayaf[*]}"
#Judge the substate residency delta
for ((k = 1; k <= sub_num; k++)); do
OLD_IFS="$IFS"
IFS=$'\n'
resdeltaarray[$k]=$((resarrayaf[k] - resarraybf[k]))
IFS="$OLD_IFS"
log_output "\nS0ix substates residency delta value:" \
"${subarrayaf[$k]}" "${resdeltaarray[$k]}"
done
#Scan resdeltaarray and judge which one has no-zero value
m=${#resdeltaarray[@]}
while [ $m -ge 1 ]; do
if [[ "${resdeltaarray[m]}" -gt "0" ]]; then
if [[ "$m" -eq "${#resdeltaarray[@]}" ]]; then
log_output "\n\033[32mCongratulations! Your system achieved the \
deepest S0ix substate! \033[0m \
\nHere is the S0ix substates status: \n$s0ix_substate_af\n"
exit 0
else
OLD_IFS="$IFS"
IFS=$'\n'
shallower=${subarrayaf[m]}
n=$((m + 1))
deeper=${subarrayaf[n]}
IFS="$OLD_IFS"
log_output "\n\033[31mYour system only get shallower S0ix substate \
residency:\033[0m" "${subarrayaf[m]}" "${resarrayaf[m]}"
log_output "\nNeed to debug why not deeper substate:" "$deeper"
if [[ -z "$sub" ]]; then
sta=$(cat $PMC_CORE_SYSFS_PATH/substate_status_registers)
log_output "\nPlease check substate_status_registers file for the \
advanced debug:\n"
log_output "substate_status_registers:"
log_output "$sta\n"
fi
exit 0
fi
else
let m--
fi
done
exit 0
#Judge only PC10 residency is available when S0ix substate is supported
elif [[ -n "$s0ix_substate" ]] &&
[[ "$(echo "scale=2; $pkg10 > 0.00" | bc)" -eq 1 ]]; then
log_output "\n\033[31mYour system supports S0ix substates, but did not \
achieve the shallowest s0i2.0\033[0m
\nHere is the S0ix substates status: \n$s0ix_substate_af\n"
#Debug scenario 5: No any S0ix substate residency, only PC10 residency
DEBUG=5
elif [[ "$(echo "scale=2; $pkg10 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nNeed to debug which IP blocked S0ix since PC10 is observed."
#Debug scenario 4: No S0ix residency, but has PC10 residency
DEBUG=4
elif [[ "$(echo "scale=2; $pkg9 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nYour system achieved PC9 residency: $pkg9, \
but no PC10 residency:$pkg10,no S0ix residency: $slp_s0"
#Debug scenario 4: No PC10 residency, but has PC9 residency
DEBUG=4
elif [[ "$(echo "scale=2; $pkg8 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nYour system achieved PC8 residency: $pkg8, \
but no PC10 residency:$pkg10,no S0ix residency: $slp_s0"
#Debug scenario 3: No PC10 residency, but has PC8 residency
DEBUG=3
elif [[ "$(echo "scale=2; $pkg3 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nYour system achieved PC3 residency: $pkg3, \
but no PC8 residency during S2idle: $pkg8"
#Debug scenario 2: No PC8 residency, but has PC3 residency
DEBUG=2
elif [[ "$(echo "scale=2; $pkg2 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nYour system achieved PC2 residency: $pkg2, \
but no PC8 residency during S2idle: $pkg8"
#Debug scenario 2: No PC8 residency, but has PC2 residency
DEBUG=2
else
#Debug scenario 0: No PC2 residency
log_output "\nYour system did not achieve PC2 state or PC2 residency is low: \
\n$pkg2"
DEBUG=1
fi
return 0
}
debug_no_pc2() {
local cc6=""
local rc6=""
local turbostat_after_s2idle=""
local duration=15
local pc2_para="CPU%c1,CPU%c6,CPU%c7,GFX%rc6,Pkg%pc2"
#Run powertop --auto-tune to double check PC2 status
if ! type powertop 1>/dev/null 2>&1; then
log_output "\033[31mPlease install powertop tool.\033[0m\n"
else
powertop --auto-tune 2>&1
fi
echo 0 >/sys/class/rtc/rtc0/wakealarm
echo +$duration >/sys/class/rtc/rtc0/wakealarm
if turbostat_after_s2idle=$("$DIR"/turbostat --quiet --show "$pc2_para" \
echo freeze 2>&1 >/sys/power/state); then
log_output "Turbostat output: \n$turbostat_after_s2idle"
sleep 5
else
log_output "\nThe system failed to place S2idle entry command, please re-try.\n"
exit 0
fi
cc6=$(echo "$turbostat_after_s2idle" | sed -n '/CPU\%c6/{n;p}' |
awk '{print $3}')
rc6=$(echo "$turbostat_after_s2idle" | sed -n '/GFX\%rc6/{n;p}' |
awk '{print $4}')
log_output "\nCPU Core c6:$cc6"
log_output "GFX rc6:$rc6"
#Check whether CPU Core C6 residency is available
if [[ "$(echo "scale=2; $cc6 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nYour CPU Core C6 residency is available: $cc6"
else
log_output "\nYour CPU Core C6 residency is not available, \
need to check which CPU idle driver is in use:"
cat /sys/devices/system/cpu/cpuidle/current_driver
log_output "\nCheck what's the CPU idle driver status:"
grep . /sys/devices/system/cpu/cpu*/cpuidle/state*/* 2>&1
return 1
fi
#Check whether Intel graphics rc6 residency is available
if [[ "$(echo "scale=2; $rc6 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nYour system Intel graphics RC6 residency is available, \
\nplease double confirm whether the latest Linux Kernel and the latest
BIOS are in use, \
\nsome hidden kernel or FW issues are beyond this script ability to isolate"
else
log_output "\nYour system did not get the GFX RC6 residency, it's a GFX problem, \
\nplease check any serious Intel i915 driver failure from dmesg log, if yes please
\nreport a bug, or the system is installed a third party of graphics device."
log_output "Check any Intel graphics i915 failure from dmesg log:"
dmesg | grep -i i915 | grep -iE "error|fail|BUG|HANG|WARNING" 2>&1
return 1
fi
return 0
}
#Function to check PCIe bridge Link Power Management state
debug_pcie_bridge_lpm() {
PCI_SYSFS="/sys/devices/pci0000:00"
PCI_BRIDGE_CLASS="0x060400"
devices=$(ls ${PCI_SYSFS})
bridge_devices=()
local link_substate_cap=""
local link_substate_ctl=""
local pci_tree=$(lspci -tvv)
# Get list of pci bridge devices
for dev in $devices; do
if [ -d "${PCI_SYSFS}"/"${dev}" ] &&
[ -f "${PCI_SYSFS}"/"${dev}"/config ]; then
class=$(cat "${PCI_SYSFS}"/"${dev}"/class)
if [[ "${class}" == "${PCI_BRIDGE_CLASS}" ]]; then
bridge_devices+=("${dev}")
fi
fi
done
link_state() {
local pciests1=$1
local byte1="$((16#${pciests1} >> 8))"
local ltsmstate="$((16#${pciests1} & 255))"
local l1msg="Link is in L1"
local policy=""
# Some bit manipulation to get Link Status
lnkstat=$(((byte1 >> 3) & 15))
case "${lnkstat}" in
0)
case "${ltsmstate}" in
[0-9] | 1[0-6])
l1msg="Link is in Detect"
;;
4[2-9])
l1msg="Link is in L2, LTSMSTATE=0"
;;
59 | 60 | 61)
l1msg="Link is Disabled"
;;
*)
l1msg="Link is not in Low Power State, LTSMSTATE=${ltsmstate}"
;;
esac
echo "${l1msg}"
;;
1)
echo "Link is Retraining"
;;
3)
case "${ltsmstate}" in
5[5-9] | 60)
l1msg="Link is in L1"
;;
61 | 62)
l1msg="Link is in L1.1"
;;
63 | 64)
l1msg="Link is in L1.2"
;;
*)
l1msg="Link is other L1 state, LTSMSTATE=${ltsmstate}"
;;
esac
echo "${l1msg}"
;;
4)
echo "Link is in L2"
;;
5)
echo "Link is in L3"
;;
[7-9] | 10)
echo "Link is in L0"
;;
*)
echo "Unknown link state ${lnkstat}"
;;
esac
}
#Let system sleep 20 seconds below, in case did not get correct PCIe bridge \
#Link state at beginning
sleep 20
#log_output "\nThe PCIe bridge link power management state is:"
echo "Available bridge device:" "${bridge_devices[@]}"
for dev in "${bridge_devices[@]}"; do
#Get lower 16 bits of PCIESTS1 register
pciests1=$(sudo xxd -ps -l2 -s 0x32a "${PCI_SYSFS}"/"${dev}"/config)
if [[ "$(link_state "${pciests1}")" == "Link is in L1.1" ]] ||
[[ "$(link_state "${pciests1}")" == "Link is in L1.2" ]] ||
[[ "$(link_state "${pciests1}")" == "Link is in Detect" ]] ||
[[ "$(link_state "${pciests1}")" == "Link is in Disabled" ]] ||
[[ "$(link_state "${pciests1}")" == "Link is in L2" ]] ||
[[ "$(link_state "${pciests1}")" == "Link is in L2, LTSMSTATE=0" ]] ||
[[ "$(link_state "${pciests1}")" == "Link is in L3" ]]; then
log_output "\n$dev $(link_state "${pciests1}")"
log_output "\nThe link power management state of PCIe bridge: $dev is OK."
else
PCIEPORT_L0="$dev"
log_output "\nThe PCIe bridge link power management state is:"
log_output "\033[31m$dev $(link_state "${pciests1}")\033[0m"
log_output "\nThe link power management state of PCIe bridge: \
\033[31m$dev\033[0m is not expected. \nwhich is expected to be L1.1 or L1.2, \
or user would run this script again.\n"
link_substate_cap=$(lspci -vvv -s"$dev" | grep L1SubCap)
link_substate_ctl=$(lspci -vvv -s"$dev" | grep L1SubCtl1)
log_output "\nThe L1SubCap of the failed $dev is:"
log_output "$link_substate_cap"
log_output "\nThe L1SubCtl1 of the failed $dev is:"
log_output "$link_substate_ctl\n"
log_output "\nChecking PCI Devices tree diagram:\n$pci_tree\n"
return 1
fi
done
#Check PCIE_ASPM default setting
policy=$(grep "\[.*\]" -o /sys/module/pcie_aspm/parameters/policy 2>&1)
if [[ "$policy" == "[default]" ]] ||
[[ "$policy" == "[powersupersave]" ]]; then
log_output "\nYour system default pcie_aspm policy setting is OK.\n"
else
log_output "\nYour system default PCIe_aspm policy setting is not proper, \
\nsuggest to set /sys/module/pcie_aspm/parameters/policy to default or \
powersupersave.\n"
return 1
fi
return 0
}
debug_no_pc8() {
local cc7=""
local rc6=""
local turbostat_after_s2idle=""
local duration=15
#Run powertop --auto-tune to make sure the devices runtime PM are enabled
if ! type powertop 1>/dev/null 2>&1; then
log_output "\033[31mPlease install powertop tool.\033[0m\n"
else
powertop --auto-tune 2>&1
fi
echo 0 >/sys/class/rtc/rtc0/wakealarm
echo +$duration >/sys/class/rtc/rtc0/wakealarm
if turbostat_after_s2idle=$("$DIR"/turbostat --quiet --show "$TURBO_COLUMNS" \
echo freeze 2>&1 >/sys/power/state); then
log_output "\nTurbostat output: \n\n$turbostat_after_s2idle"
sleep 5
else
log_output "\nThe system failed to place S2idle entry command, please re-try.\n"
exit 0
fi
cc7=$(echo "$turbostat_after_s2idle" | sed -n '/CPU\%c7/{n;p}' |
awk '{print $3}')
rc6=$(echo "$turbostat_after_s2idle" | sed -n '/GFX\%rc6/{n;p}' |
awk '{print $4}')
pkg8=$(echo "$turbostat_after_s2idle" | sed -n '/Pkg\%pc8/{n;p}' |
awk '{print $9}')
pkg10=$(echo "$turbostat_after_s2idle" | sed -n '/Pk\%pc10/{n;p}' |
awk '{print $11}')
slp_s0=$(echo "$turbostat_after_s2idle" | sed -n '/SYS\%LPI/{n;p}' |
awk '{print $12}')
#Check whether PC8,PC10 and S0ix is available after running powertop
if [[ "$(echo "scale=2; $slp_s0 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nS0ix residency is achieved after powertop --auto-tune"
return 0
elif [[ "$(echo "scale=2; $pkg10 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nPC10 residency achieved after powertop --auto-tune, \
but still no S0ix residency"
return 0
elif [[ "$(echo "scale=2; $pkg8 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nPC8 residency achieved after powertop --auto-tune, \
but still no PC10 and S0ix"
return 0
fi
#Check whether CPU Core C7 residency is available
if [[ "$(echo "scale=2; $cc7 > 0.00" | bc)" -eq 1 ]]; then
log_output "\nYour CPU Core C7 residency is available: $cc7"
else
log_output "\nYour CPU Core C7 residency is not available, need to check \
which CPU idle driver is in use:"
cat /sys/devices/system/cpu/cpuidle/current_driver
log_output "\n\nCheck what's the CPU idle driver status:"
grep . /sys/devices/system/cpu/cpu*/cpuidle/state*/* 2>&1
return 1
fi
#Check whether Intel graphics RC6 residency is available and high enough for pc8
if [[ -z "$rc6" ]]; then
log_output "\n\033[31mPlease check if Intel graphic i915 driver is not loaded \
\nor Intel graphics controller has been disabled \
\nor the 3rd party graphics device is installed.\033[0m\n"
elif [[ "$(echo "scale=2; $rc6 > 50.00" | bc)" -eq 1 ]]; then
log_output "\nYour system Intel graphics RC6 residency is available:$rc6"
else
log_output "\nYour system graphics RC6 residency is low, need to double check \
the status after disabling gfx controller from BIOS setup \
\nor appending modprobe.blacklist=i915 kernel parameter to check any \
deeper Package C-state available,\nthen submit an i915 bug to Intel graphics team.\n"
return 1
fi
#Check whether PCIe Link PM is in L1 or L2, as L0 may block PC3
if [[ "$(echo "scale=2; $pkg8 < 1.00" | bc)" -eq 1 ]]; then
log_output "\nChecking PCIe Device D state and Bridge Link state:\n"
debug_pcie_bridge_lpm
pci_d3_status_check
fi
}
debug_no_dc9() {
local kbl_l=142
local kbl=158
local cml=165
local cml_l=166
local dc5_before=""
local dc5_after=""
local dc6_before=""
local dc6_after=""
local rc6_model_list=""
local model=""
local i=""
local turbostat_after_s2idle=""
local duration=15
local dmc_dir="/sys/kernel/debug/dri/0/i915_dmc_info"
if [ ! -f "$dmc_dir" ]; then
log_output "\nPlease check if the Intel graphics i915 driver is not loaded \
or the graphic controller has been disabled?"
return 0
fi
dc5_before=$(grep -i "DC3 -> DC5" $dmc_dir | awk '{print $(NF)}' 2>&1)
dc6_before=$(grep -i "DC5 -> DC6" $dmc_dir | awk '{print $(NF)}' 2>&1)
log_output "\nGFX DC5 before S2idle: $dc5_before"
log_output "GFX DC6 before S2idle: $dc6_before"
echo 0 >/sys/class/rtc/rtc0/wakealarm
echo +$duration >/sys/class/rtc/rtc0/wakealarm
if turbostat_after_s2idle=$("$DIR"/turbostat --quiet --show "$TURBO_COLUMNS" \
echo freeze 2>&1 >/sys/power/state); then
log_output "\nTurbostat output: \n\n$turbostat_after_s2idle"
sleep 5
else
log_output "\nThe system failed to place S2idle entry command, please re-try\n"
exit 0
fi
dc5_after=$(grep -i "DC3 -> DC5" $dmc_dir | awk '{print $(NF)}' 2>&1)
dc6_after=$(grep -i "DC5 -> DC6" $dmc_dir | awk '{print $(NF)}' 2>&1)
log_output "\nGFX DC5 after S2idle: $dc5_after"
log_output "GFX DC6 after S2idle: $dc6_after"
#Check DC6 state for Intel® Coffee lake, Whiskey lake, Comet lake platforms