1/*
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright © 2018 Intel Corporation
5 */
6
7#include "i915_drv.h"
8#include "gt/intel_gt.h"
9#include "gt/intel_gt_print.h"
10
11#include "../i915_selftest.h"
12#include "igt_flush_test.h"
13#include "igt_live_test.h"
14
15int igt_live_test_begin(struct igt_live_test *t,
16 struct drm_i915_private *i915,
17 const char *func,
18 const char *name)
19{
20 struct intel_engine_cs *engine;
21 enum intel_engine_id id;
22 struct intel_gt *gt;
23 unsigned int i;
24 int err;
25
26 t->i915 = i915;
27 t->func = func;
28 t->name = name;
29
30 for_each_gt(gt, i915, i) {
31
32 err = intel_gt_wait_for_idle(gt, MAX_SCHEDULE_TIMEOUT);
33 if (err) {
34 gt_err(gt, "%s(%s): GT failed to idle before, with err=%d!",
35 func, name, err);
36 return err;
37 }
38
39 for_each_engine(engine, gt, id)
40 t->reset_engine[i][id] =
41 i915_reset_engine_count(error: &i915->gpu_error,
42 engine);
43 }
44
45 t->reset_global = i915_reset_count(error: &i915->gpu_error);
46
47 return 0;
48}
49
50int igt_live_test_end(struct igt_live_test *t)
51{
52 struct drm_i915_private *i915 = t->i915;
53 struct intel_engine_cs *engine;
54 enum intel_engine_id id;
55 struct intel_gt *gt;
56 unsigned int i;
57
58 if (igt_flush_test(i915))
59 return -EIO;
60
61 if (t->reset_global != i915_reset_count(error: &i915->gpu_error)) {
62 pr_err("%s(%s): GPU was reset %d times!\n",
63 t->func, t->name,
64 i915_reset_count(&i915->gpu_error) - t->reset_global);
65 return -EIO;
66 }
67
68 for_each_gt(gt, i915, i) {
69 for_each_engine(engine, gt, id) {
70 if (t->reset_engine[i][id] ==
71 i915_reset_engine_count(error: &i915->gpu_error, engine))
72 continue;
73
74 gt_err(gt, "%s(%s): engine '%s' was reset %d times!\n",
75 t->func, t->name, engine->name,
76 i915_reset_engine_count(&i915->gpu_error, engine) -
77 t->reset_engine[i][id]);
78 return -EIO;
79 }
80 }
81
82 return 0;
83}
84

source code of linux/drivers/gpu/drm/i915/selftests/igt_live_test.c