linux-kernel - [PATCH v2 4/4] selftests: ifs: verify IFS ARRAY BIST functionality

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Date: Fri, 31 May 2024 15:53:50 +0800
From: Pengfei Xu <pengfei.xu@...el.com>
To: Shuah Khan <skhan@...uxfoundation.org>,
	shuah@...nel.org,
	linux-kselftest <linux-kselftest@...r.kernel.org>
Cc: linux-kernel <linux-kernel@...r.kernel.org>,
	jithu.joseph@...el.com,
	Pengfei Xu <pengfei.xu@...el.com>,
	ashok.raj@...el.com,
	sathyanarayanan.kuppuswamy@...el.com
Subject: [PATCH v2 4/4] selftests: ifs: verify IFS ARRAY BIST functionality

There are two selftest scenarios for ARRAY BIST(Board Integrated System
Test) tests:

1. Perform IFS ARRAY BIST tests once on each CPU.
2. Perform IFS ARRAY BIST tests on a random CPU with 3 rounds.

These are not meant to be exhaustive, but are some minimal tests for
for checking IFS ARRAY BIST.

Reviewed-by: Jithu Joseph <jithu.joseph@...el.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
Co-developed-by: Ashok Raj <ashok.raj@...el.com>
Signed-off-by: Ashok Raj <ashok.raj@...el.com>
Signed-off-by: Pengfei Xu <pengfei.xu@...el.com>
---
 .../selftests/drivers/platform/x86/intel/ifs/test_ifs.sh  | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/testing/selftests/drivers/platform/x86/intel/ifs/test_ifs.sh b/tools/testing/selftests/drivers/platform/x86/intel/ifs/test_ifs.sh
index 82fc5a461b12..8b68964b29f4 100755
--- a/tools/testing/selftests/drivers/platform/x86/intel/ifs/test_ifs.sh
+++ b/tools/testing/selftests/drivers/platform/x86/intel/ifs/test_ifs.sh
@@ -17,6 +17,7 @@ readonly IFS_SCAN_MODE="0"
 readonly IFS_ARRAY_BIST_SCAN_MODE="1"
 readonly IFS_PATH="/sys/devices/virtual/misc/intel_ifs"
 readonly IFS_SCAN_SYSFS_PATH="${IFS_PATH}_${IFS_SCAN_MODE}"
+readonly IFS_ARRAY_BIST_SYSFS_PATH="${IFS_PATH}_${IFS_ARRAY_BIST_SCAN_MODE}"
 readonly RUN_TEST="run_test"
 readonly STATUS="status"
 readonly DETAILS="details"
@@ -479,6 +480,13 @@ test_ifs()
 		test_ifs_scan_available_imgs
 		test_ifs_same_cpu_loop "$IFS_SCAN_MODE" "$RANDOM_CPU" "$LOOP_TIMES"
 	fi
+
+	if [[ -d "$IFS_ARRAY_BIST_SYSFS_PATH" ]]; then
+		ifs_test_cpus "$SIBLINGS" "$IFS_ARRAY_BIST_SCAN_MODE"
+		test_ifs_same_cpu_loop "$IFS_ARRAY_BIST_SCAN_MODE" "$RANDOM_CPU" "$LOOP_TIMES"
+	else
+		append_log "[$SKIP] No $IFS_ARRAY_BIST_SYSFS_PATH, skip IFS ARRAY BIST scan"
+	fi
 }
 
 trap ifs_cleanup SIGTERM SIGINT
-- 
2.43.0