@@ -10951,6 +10951,7 @@ R: Tony Luck <tony.luck@intel.com>
S: Maintained
F: drivers/platform/x86/intel/ifs
F: include/trace/events/intel_ifs.h
+F: tools/testing/selftests/drivers/platform/x86/intel/ifs/
INTEL INTEGRATED SENSOR HUB DRIVER
M: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
@@ -19,6 +19,7 @@ TARGETS += drivers/dma-buf
TARGETS += drivers/s390x/uvdevice
TARGETS += drivers/net/bonding
TARGETS += drivers/net/team
+TARGETS += drivers/platform/x86/intel/ifs
TARGETS += dt
TARGETS += efivarfs
TARGETS += exec
new file mode 100644
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+# Makefile for ifs(In Field Scan) selftests
+
+TEST_PROGS := test_ifs.sh
+
+include ../../../../../lib.mk
new file mode 100755
@@ -0,0 +1,181 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Test the functionality of the Intel IFS(In Field Scan) driver.
+#
+
+# Matched with kselftest framework: tools/testing/selftests/kselftest.h
+readonly KSFT_PASS=0
+readonly KSFT_FAIL=1
+readonly KSFT_XFAIL=2
+readonly KSFT_SKIP=4
+
+readonly IFS_SCAN_MODE="0"
+readonly IFS_PATH="/sys/devices/virtual/misc/intel_ifs"
+readonly IFS_SCAN_SYSFS_PATH="${IFS_PATH}_${IFS_SCAN_MODE}"
+readonly PASS="PASS"
+readonly FAIL="FAIL"
+readonly INFO="INFO"
+readonly XFAIL="XFAIL"
+readonly SKIP="SKIP"
+readonly IFS_NAME="intel_ifs"
+
+# Matches arch/x86/include/asm/intel-family.h and
+# drivers/platform/x86/intel/ifs/core.c requirement as follows
+readonly SAPPHIRERAPIDS_X="8f"
+readonly EMERALDRAPIDS_X="cf"
+
+readonly INTEL_FAM6="06"
+
+FML=""
+MODEL=""
+
+TRUE="true"
+FALSE="false"
+RESULT=$KSFT_PASS
+export INTERVAL_TIME=1
+# For IFS cleanup tags
+ORIGIN_IFS_LOADED=""
+IFS_LOG="/tmp/ifs_logs.$$"
+
+append_log()
+{
+ echo -e "$1" | tee -a "$IFS_LOG"
+}
+
+ifs_scan_result_summary()
+{
+ local failed_info pass_num skip_num fail_num
+
+ if [[ -e "$IFS_LOG" ]]; then
+ failed_info=$(grep ^"\[${FAIL}\]" "$IFS_LOG")
+ fail_num=$(grep -c ^"\[${FAIL}\]" "$IFS_LOG")
+ skip_num=$(grep -c ^"\[${SKIP}\]" "$IFS_LOG")
+ pass_num=$(grep -c ^"\[${PASS}\]" "$IFS_LOG")
+
+ if [[ "$fail_num" -ne 0 ]]; then
+ RESULT=$KSFT_FAIL
+ echo "[$INFO] IFS test failure summary:"
+ echo "$failed_info"
+ elif [[ "$skip_num" -ne 0 ]]; then
+ RESULT=$KSFT_SKIP
+ fi
+ echo "[$INFO] IFS test pass:$pass_num, skip:$skip_num, fail:$fail_num"
+ else
+ echo "[$INFO] No file $IFS_LOG for IFS scan summary"
+ fi
+}
+
+ifs_cleanup()
+{
+ lsmod | grep -q "$IFS_NAME" && [[ "$ORIGIN_IFS_LOADED" == "$FALSE" ]] && {
+ echo "[$INFO] modprobe -r $IFS_NAME"
+ modprobe -r "$IFS_NAME"
+ }
+
+ ifs_scan_result_summary
+ [[ -e "$IFS_LOG" ]] && rm -rf "$IFS_LOG"
+
+ echo "[RESULT] IFS test exit with $RESULT"
+ exit "$RESULT"
+}
+
+test_exit()
+{
+ local info=$1
+ RESULT=$2
+
+ declare -A EXIT_MAP
+ EXIT_MAP[$KSFT_PASS]=$PASS
+ EXIT_MAP[$KSFT_FAIL]=$FAIL
+ EXIT_MAP[$KSFT_XFAIL]=$XFAIL
+ EXIT_MAP[$KSFT_SKIP]=$SKIP
+
+ append_log "[${EXIT_MAP[$RESULT]}] $info"
+ ifs_cleanup
+}
+
+get_cpu_fms()
+{
+ FML=$(grep -m 1 "family" /proc/cpuinfo | awk -F ":" '{printf "%02x",$2;}')
+ MODEL=$(grep -m 1 "model" /proc/cpuinfo | awk -F ":" '{printf "%02x",$2;}')
+}
+
+check_cpu_ifs_support_interval_time()
+{
+ get_cpu_fms
+
+ if [[ "$FML" != "$INTEL_FAM6" ]]; then
+ test_exit "CPU family:$FML does not support IFS" "$KSFT_SKIP"
+ fi
+
+ # Ucode has time interval requirement for IFS scan on same CPU as follows:
+ case $MODEL in
+ "$SAPPHIRERAPIDS_X")
+ INTERVAL_TIME=180;
+ ;;
+ "$EMERALDRAPIDS_X")
+ INTERVAL_TIME=30;
+ ;;
+ *)
+ # Set default interval time for other platforms
+ INTERVAL_TIME=1;
+ append_log "[$INFO] CPU FML:$FML model:0x$MODEL, default: 1s interval time"
+ ;;
+ esac
+}
+
+check_ifs_loaded()
+{
+ local ifs_info=""
+
+ ifs_info=$(lsmod | grep "$IFS_NAME")
+ if [[ -z "$ifs_info" ]]; then
+ append_log "[$INFO] modprobe $IFS_NAME"
+ modprobe "$IFS_NAME" || {
+ test_exit "Check if CONFIG_INTEL_IFS is set to m or \
+platform doesn't support ifs" "$KSFT_SKIP"
+ }
+ ifs_info=$(lsmod | grep "$IFS_NAME")
+ [[ -n "$ifs_info" ]] || test_exit "No ifs module listed by lsmod" "$KSFT_FAIL"
+ fi
+}
+
+test_ifs_scan_entry()
+{
+ local ifs_info=""
+ local ifs_entry=""
+
+ ifs_info=$(lsmod | grep "$IFS_NAME")
+
+ if [[ -z "$ifs_info" ]]; then
+ ORIGIN_IFS_LOADED="$FALSE"
+ check_ifs_loaded
+ else
+ ORIGIN_IFS_LOADED="$TRUE"
+ append_log "[$INFO] Module $IFS_NAME is already loaded"
+ fi
+
+ ifs_entry=$(ls "$IFS_SCAN_SYSFS_PATH" 2>/dev/null)
+ if [[ -z "$ifs_entry" ]]; then
+ test_exit "No sysfs entry in $IFS_SCAN_SYSFS_PATH" "$KSFT_FAIL"
+ else
+ append_log "[$PASS] IFS sysfs $IFS_SCAN_SYSFS_PATH entry is created\n"
+ fi
+}
+
+prepare_ifs_test_env()
+{
+ check_cpu_ifs_support_interval_time
+}
+
+test_ifs()
+{
+ prepare_ifs_test_env
+
+ test_ifs_scan_entry
+}
+
+trap ifs_cleanup SIGTERM SIGINT
+test_ifs
+ifs_cleanup