[igt-dev] [PATCH i-g-t v4 2/3] tests/xe: Validate GT is in C6 on idle

[Riana Tauro <riana.tauro@intel.com>]

Add a test that validates if GT is in C6 on idle.

v2:
   - fix cosmetic review comments (Kamil)
   - replace assert with igt_assert_f
   - fix cosmetic review comments (Anshuman)

v3:
   - use tile sysfs library functions

v4:
   - fix cosmetic review comments (Badal, Kamil)

Signed-off-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com>
---
 tests/xe/xe_pm_residency.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/xe/xe_pm_residency.c b/tests/xe/xe_pm_residency.c
index 4fd374933..a20c4449c 100644
--- a/tests/xe/xe_pm_residency.c
+++ b/tests/xe/xe_pm_residency.c
@@ -45,6 +45,11 @@ static unsigned int measured_usleep(unsigned int usec)
 	return igt_nsec_elapsed(&ts) / 1000;
 }
 
+/**
+ * SUBTEST: gt-c6-on-idle
+ * Description: Validate GT C6 state on idle
+ * Run type: BAT
+ */
 static bool is_gt_in_c6(int fd, int gt)
 {
 	char gt_c_state[16];
@@ -102,6 +107,11 @@ igt_main
 		igt_require(!IS_PONTEVECCHIO(xe_dev_id(fd)));
 	}
 
+	igt_describe("Validate GT C6 on idle");
+	igt_subtest("gt-c6-on-idle")
+		xe_for_each_gt(fd, gt)
+			igt_assert_f(igt_wait(is_gt_in_c6(fd, gt), 1000, 1), "GT not in C6\n");
+
 	igt_describe("Validate idle residency measured over a time interval is within the tolerance");
 	igt_subtest("idle-residency")
 		xe_for_each_gt(fd, gt)
-- 
2.40.0