1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2018 Intel Corporation
*/
#include "gem/i915_gem_pm.h"
#include "i915_selftest.h"
#include "igt_flush_test.h"
#include "lib_sw_fence.h"
struct live_active {
struct i915_active base;
bool retired;
};
static void __live_active_retire(struct i915_active *base)
{
struct live_active *active = container_of(base, typeof(*active), base);
active->retired = true;
}
static int __live_active_setup(struct drm_i915_private *i915,
struct live_active *active)
{
struct intel_engine_cs *engine;
struct i915_sw_fence *submit;
enum intel_engine_id id;
unsigned int count = 0;
int err = 0;
submit = heap_fence_create(GFP_KERNEL);
if (!submit)
return -ENOMEM;
i915_active_init(i915, &active->base, __live_active_retire);
active->retired = false;
if (!i915_active_acquire(&active->base)) {
pr_err("First i915_active_acquire should report being idle\n");
err = -EINVAL;
goto out;
}
for_each_engine(engine, i915, id) {
struct i915_request *rq;
rq = i915_request_create(engine->kernel_context);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
break;
}
err = i915_sw_fence_await_sw_fence_gfp(&rq->submit,
submit,
GFP_KERNEL);
if (err >= 0)
err = i915_active_ref(&active->base,
rq->fence.context, rq);
i915_request_add(rq);
if (err) {
pr_err("Failed to track active ref!\n");
break;
}
count++;
}
i915_active_release(&active->base);
if (active->retired && count) {
pr_err("i915_active retired before submission!\n");
err = -EINVAL;
}
if (active->base.count != count) {
pr_err("i915_active not tracking all requests, found %d, expected %d\n",
active->base.count, count);
err = -EINVAL;
}
out:
i915_sw_fence_commit(submit);
heap_fence_put(submit);
return err;
}
static int live_active_wait(void *arg)
{
struct drm_i915_private *i915 = arg;
struct live_active active;
intel_wakeref_t wakeref;
int err;
/* Check that we get a callback when requests retire upon waiting */
mutex_lock(&i915->drm.struct_mutex);
wakeref = intel_runtime_pm_get(i915);
err = __live_active_setup(i915, &active);
i915_active_wait(&active.base);
if (!active.retired) {
pr_err("i915_active not retired after waiting!\n");
err = -EINVAL;
}
i915_active_fini(&active.base);
if (igt_flush_test(i915, I915_WAIT_LOCKED))
err = -EIO;
intel_runtime_pm_put(i915, wakeref);
mutex_unlock(&i915->drm.struct_mutex);
return err;
}
static int live_active_retire(void *arg)
{
struct drm_i915_private *i915 = arg;
struct live_active active;
intel_wakeref_t wakeref;
int err;
/* Check that we get a callback when requests are indirectly retired */
mutex_lock(&i915->drm.struct_mutex);
wakeref = intel_runtime_pm_get(i915);
err = __live_active_setup(i915, &active);
/* waits for & retires all requests */
if (igt_flush_test(i915, I915_WAIT_LOCKED))
err = -EIO;
if (!active.retired) {
pr_err("i915_active not retired after flushing!\n");
err = -EINVAL;
}
i915_active_fini(&active.base);
intel_runtime_pm_put(i915, wakeref);
mutex_unlock(&i915->drm.struct_mutex);
return err;
}
int i915_active_live_selftests(struct drm_i915_private *i915)
{
static const struct i915_subtest tests[] = {
SUBTEST(live_active_wait),
SUBTEST(live_active_retire),
};
if (i915_terminally_wedged(i915))
return 0;
return i915_subtests(tests, i915);
}
|
