drivers/gpu/drm/i915/selftests/igt_live_test.c

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright © 2018 Intel Corporation
   5  */
   6
   7 #include "i915_drv.h"
   8 #include "gt/intel_gt_requests.h"
   9
  10 #include "../i915_selftest.h"
  11 #include "igt_flush_test.h"
  12 #include "igt_live_test.h"
  13
  14 int igt_live_test_begin(struct igt_live_test *t,
  15                         struct drm_i915_private *i915,
  16                         const char *func,
  17                         const char *name)
  18 {
  19         struct intel_gt *gt = &i915->gt;
  20         struct intel_engine_cs *engine;
  21         enum intel_engine_id id;
  22         int err;
  23
  24         t->i915 = i915;
  25         t->func = func;
  26         t->name = name;
  27
  28         err = intel_gt_wait_for_idle(gt, MAX_SCHEDULE_TIMEOUT);
  29         if (err) {
  30                 pr_err("%s(%s): failed to idle before, with err=%d!",
  31                        func, name, err);
  32                 return err;
  33         }
  34
  35         t->reset_global = i915_reset_count(&i915->gpu_error);
  36
  37         for_each_engine(engine, gt, id)
  38                 t->reset_engine[id] =
  39                         i915_reset_engine_count(&i915->gpu_error, engine);
  40
  41         return 0;
  42 }
  43
  44 int igt_live_test_end(struct igt_live_test *t)
  45 {
  46         struct drm_i915_private *i915 = t->i915;
  47         struct intel_engine_cs *engine;
  48         enum intel_engine_id id;
  49
  50         if (igt_flush_test(i915))
  51                 return -EIO;
  52
  53         if (t->reset_global != i915_reset_count(&i915->gpu_error)) {
  54                 pr_err("%s(%s): GPU was reset %d times!\n",
  55                        t->func, t->name,
  56                        i915_reset_count(&i915->gpu_error) - t->reset_global);
  57                 return -EIO;
  58         }
  59
  60         for_each_engine(engine, &i915->gt, id) {
  61                 if (t->reset_engine[id] ==
  62                     i915_reset_engine_count(&i915->gpu_error, engine))
  63                         continue;
  64
  65                 pr_err("%s(%s): engine '%s' was reset %d times!\n",
  66                        t->func, t->name, engine->name,
  67                        i915_reset_engine_count(&i915->gpu_error, engine) -
  68                        t->reset_engine[id]);
  69                 return -EIO;
  70         }
  71
  72         return 0;
  73 }