diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/selftest_gt_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/selftest_gt_pm.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/selftest_gt_pm.c b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c new file mode 100644 index 000000000000..d1752f15702a --- /dev/null +++ b/drivers/gpu/drm/i915/gt/selftest_gt_pm.c @@ -0,0 +1,60 @@ + +/* + * SPDX-License-Identifier: MIT + * + * Copyright © 2019 Intel Corporation + */ + +#include "selftest_llc.h" + +static int live_gt_resume(void *arg) +{ + struct intel_gt *gt = arg; + IGT_TIMEOUT(end_time); + int err; + + /* Do several suspend/resume cycles to check we don't explode! */ + do { + intel_gt_suspend_prepare(gt); + intel_gt_suspend_late(gt); + + if (gt->rc6.enabled) { + pr_err("rc6 still enabled after suspend!\n"); + intel_gt_set_wedged_on_init(gt); + err = -EINVAL; + break; + } + + err = intel_gt_resume(gt); + if (err) + break; + + if (gt->rc6.supported && !gt->rc6.enabled) { + pr_err("rc6 not enabled upon resume!\n"); + intel_gt_set_wedged_on_init(gt); + err = -EINVAL; + break; + } + + err = st_llc_verify(>->llc); + if (err) { + pr_err("llc state not restored upon resume!\n"); + intel_gt_set_wedged_on_init(gt); + break; + } + } while (!__igt_timeout(end_time, NULL)); + + return err; +} + +int intel_gt_pm_live_selftests(struct drm_i915_private *i915) +{ + static const struct i915_subtest tests[] = { + SUBTEST(live_gt_resume), + }; + + if (intel_gt_is_wedged(&i915->gt)) + return 0; + + return intel_gt_live_subtests(tests, &i915->gt); +} |