drivers/gpu/drm/i915/gt/selftest_gt_pm.c

   1
   2 /*
   3  * SPDX-License-Identifier: MIT
   4  *
   5  * Copyright © 2019 Intel Corporation
   6  */
   7
   8 #include "selftest_llc.h"
   9 #include "selftest_rc6.h"
  10
  11 static int live_gt_resume(void *arg)
  12 {
  13         struct intel_gt *gt = arg;
  14         IGT_TIMEOUT(end_time);
  15         int err;
  16
  17         /* Do several suspend/resume cycles to check we don't explode! */
  18         do {
  19                 intel_gt_suspend_prepare(gt);
  20                 intel_gt_suspend_late(gt);
  21
  22                 if (gt->rc6.enabled) {
  23                         pr_err("rc6 still enabled after suspend!\n");
  24                         intel_gt_set_wedged_on_init(gt);
  25                         err = -EINVAL;
  26                         break;
  27                 }
  28
  29                 err = intel_gt_resume(gt);
  30                 if (err)
  31                         break;
  32
  33                 if (gt->rc6.supported && !gt->rc6.enabled) {
  34                         pr_err("rc6 not enabled upon resume!\n");
  35                         intel_gt_set_wedged_on_init(gt);
  36                         err = -EINVAL;
  37                         break;
  38                 }
  39
  40                 err = st_llc_verify(&gt->llc);
  41                 if (err) {
  42                         pr_err("llc state not restored upon resume!\n");
  43                         intel_gt_set_wedged_on_init(gt);
  44                         break;
  45                 }
  46         } while (!__igt_timeout(end_time, NULL));
  47
  48         return err;
  49 }
  50
  51 int intel_gt_pm_live_selftests(struct drm_i915_private *i915)
  52 {
  53         static const struct i915_subtest tests[] = {
  54                 SUBTEST(live_rc6_manual),
  55                 SUBTEST(live_gt_resume),
  56         };
  57
  58         if (intel_gt_is_wedged(&i915->gt))
  59                 return 0;
  60
  61         return intel_gt_live_subtests(tests, &i915->gt);
  62 }
  63
  64 int intel_gt_pm_late_selftests(struct drm_i915_private *i915)
  65 {
  66         static const struct i915_subtest tests[] = {
  67                 /*
  68                  * These tests may leave the system in an undesirable state.
  69                  * They are intended to be run last in CI and the system
  70                  * rebooted afterwards.
  71                  */
  72                 SUBTEST(live_rc6_ctx_wa),
  73         };
  74
  75         if (intel_gt_is_wedged(&i915->gt))
  76                 return 0;
  77
  78         return intel_gt_live_subtests(tests, &i915->gt);
  79 }