In some cases we observed that forcewake isn't kept after
resume and then RC6 residency is not constant.
References: HSD#1804921797
Cc: Arkadiusz Hiler <arkadiusz.hi...@intel.com>
Cc: Michal Winiarski <michal.winiar...@intel.com>
Cc: Lukasz Fiedorowicz <lukasz.fiedorow...@intel.com>
Signed-off-by: Ewelina Musial <ewelina.mus...@intel.com>
---
tests/pm_rc6_residency.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)
diff --git a/tests/pm_rc6_residency.c b/tests/pm_rc6_residency.c
index bdb9747..4e61326 100644
--- a/tests/pm_rc6_residency.c
+++ b/tests/pm_rc6_residency.c
@@ -165,6 +165,44 @@ static void measure_residencies(int devid, unsigned int
rc6_mask,
res->rc6 += res->rc6p;
}
+enum sleep_state { NOSLEEP, SUSPEND, HIBERNATE };
+static void test_rc6_forcewake(enum sleep_state sleep_state)
+{
+ int fd, fw_fd;
+ unsigned long residency_pre, residency_post;
+
+ fd = drm_open_driver(DRIVER_INTEL);
+ igt_assert_lte(0, fd);
+
+ fw_fd = igt_open_forcewake_handle(fd);
+ igt_assert_lte(0, fw_fd);
+
+ switch (sleep_state) {
+ case NOSLEEP:
+ break;
+ case SUSPEND:
+ igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
+ SUSPEND_TEST_NONE);
+ break;
+ case HIBERNATE:
+ igt_system_suspend_autoresume(SUSPEND_STATE_DISK,
+ SUSPEND_TEST_NONE);
+ break;
+ }
+
+ sleep(1); // time to fully resume
+
+ // forcewake should keep residency constant after resume
+ residency_pre = read_rc6_residency("rc6");
+ sleep(SLEEP_DURATION);
+ residency_post = read_rc6_residency("rc6");
+
+ igt_assert_eq(residency_pre, residency_post);
+
+ close(fw_fd);
+ close(fd);
+}
+
igt_main
{
unsigned int rc6_mask;
@@ -209,4 +247,19 @@ igt_main
residency_accuracy(res.rc6pp, res.duration, "rc6pp");
}
+ igt_subtest("rc6-forcewake") {
+ igt_skip_on(!(rc6_mask & RC6_ENABLED));
+
+ test_rc6_forcewake(NOSLEEP);
+ }
+ igt_subtest("rc6-forcewake-suspend") {
+ igt_skip_on(!(rc6_mask & RC6_ENABLED));
+
+ test_rc6_forcewake(SUSPEND);
+ }
+ igt_subtest("rc6-forcewake-hibernate") {
+ igt_skip_on(!(rc6_mask & RC6_ENABLED));
+
+ test_rc6_forcewake(HIBERNATE);
+ }
}
--
2.9.3
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