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
160
161
162
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2017 Google, Inc
*/
#include <common.h>
#include <cyclic.h>
#include <dm.h>
#include <wdt.h>
#include <asm/gpio.h>
#include <asm/state.h>
#include <asm/test.h>
#include <dm/test.h>
#include <test/test.h>
#include <test/ut.h>
#include <linux/delay.h>
#include <watchdog.h>
/* Test that watchdog driver functions are called */
static int dm_test_wdt_base(struct unit_test_state *uts)
{
struct sandbox_state *state = state_get_current();
struct udevice *dev;
const u64 timeout = 42;
ut_assertok(uclass_get_device_by_driver(UCLASS_WDT,
DM_DRIVER_GET(wdt_sandbox), &dev));
ut_assertnonnull(dev);
ut_asserteq(0, state->wdt.counter);
ut_asserteq(false, state->wdt.running);
ut_assertok(wdt_start(dev, timeout, 0));
ut_asserteq(timeout, state->wdt.counter);
ut_asserteq(true, state->wdt.running);
uint reset_count = state->wdt.reset_count;
ut_assertok(wdt_reset(dev));
ut_asserteq(reset_count + 1, state->wdt.reset_count);
ut_asserteq(true, state->wdt.running);
ut_assertok(wdt_stop(dev));
ut_asserteq(false, state->wdt.running);
return 0;
}
DM_TEST(dm_test_wdt_base, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
static int dm_test_wdt_gpio_toggle(struct unit_test_state *uts)
{
/*
* The sandbox wdt gpio is "connected" to gpio bank a, offset
* 7. Use the sandbox back door to verify that the gpio-wdt
* driver behaves as expected when using the 'toggle' algorithm.
*/
struct udevice *wdt, *gpio;
const u64 timeout = 42;
const int offset = 7;
int val;
ut_assertok(uclass_get_device_by_name(UCLASS_WDT,
"wdt-gpio-toggle", &wdt));
ut_assertnonnull(wdt);
ut_assertok(uclass_get_device_by_name(UCLASS_GPIO, "base-gpios", &gpio));
ut_assertnonnull(gpio);
ut_assertok(wdt_start(wdt, timeout, 0));
val = sandbox_gpio_get_value(gpio, offset);
ut_assertok(wdt_reset(wdt));
ut_asserteq(!val, sandbox_gpio_get_value(gpio, offset));
ut_assertok(wdt_reset(wdt));
ut_asserteq(val, sandbox_gpio_get_value(gpio, offset));
ut_asserteq(-ENOSYS, wdt_stop(wdt));
return 0;
}
DM_TEST(dm_test_wdt_gpio_toggle, UT_TESTF_SCAN_FDT);
static int dm_test_wdt_gpio_level(struct unit_test_state *uts)
{
/*
* The sandbox wdt gpio is "connected" to gpio bank a, offset
* 7. Use the sandbox back door to verify that the gpio-wdt
* driver behaves as expected when using the 'level' algorithm.
*/
struct udevice *wdt, *gpio;
const u64 timeout = 42;
const int offset = 7;
int val;
ut_assertok(uclass_get_device_by_name(UCLASS_WDT,
"wdt-gpio-level", &wdt));
ut_assertnonnull(wdt);
ut_assertok(uclass_get_device_by_name(UCLASS_GPIO, "base-gpios", &gpio));
ut_assertnonnull(gpio);
ut_assertok(wdt_start(wdt, timeout, 0));
val = sandbox_gpio_get_value(gpio, offset);
ut_assertok(wdt_reset(wdt));
ut_asserteq(val, sandbox_gpio_get_value(gpio, offset));
ut_assertok(wdt_reset(wdt));
ut_asserteq(val, sandbox_gpio_get_value(gpio, offset));
ut_asserteq(-ENOSYS, wdt_stop(wdt));
return 0;
}
DM_TEST(dm_test_wdt_gpio_level, UT_TESTF_SCAN_FDT);
static int dm_test_wdt_watchdog_reset(struct unit_test_state *uts)
{
struct sandbox_state *state = state_get_current();
struct udevice *gpio_wdt, *sandbox_wdt;
struct udevice *gpio;
const u64 timeout = 42;
const int offset = 7;
uint reset_count;
int val;
ut_assertok(uclass_get_device_by_name(UCLASS_WDT,
"wdt-gpio-toggle", &gpio_wdt));
ut_assertnonnull(gpio_wdt);
ut_assertok(uclass_get_device_by_driver(UCLASS_WDT,
DM_DRIVER_GET(wdt_sandbox), &sandbox_wdt));
ut_assertnonnull(sandbox_wdt);
ut_assertok(uclass_get_device_by_name(UCLASS_GPIO, "base-gpios", &gpio));
ut_assertnonnull(gpio);
/* Neither device should be "started", so watchdog_reset() should be a no-op. */
reset_count = state->wdt.reset_count;
val = sandbox_gpio_get_value(gpio, offset);
cyclic_run();
ut_asserteq(reset_count, state->wdt.reset_count);
ut_asserteq(val, sandbox_gpio_get_value(gpio, offset));
/* Start both devices. */
ut_assertok(wdt_start(gpio_wdt, timeout, 0));
ut_assertok(wdt_start(sandbox_wdt, timeout, 0));
/* Make sure both devices have just been pinged. */
timer_test_add_offset(100);
cyclic_run();
reset_count = state->wdt.reset_count;
val = sandbox_gpio_get_value(gpio, offset);
/* The gpio watchdog should be pinged, the sandbox one not. */
timer_test_add_offset(30);
cyclic_run();
ut_asserteq(reset_count, state->wdt.reset_count);
ut_asserteq(!val, sandbox_gpio_get_value(gpio, offset));
/* After another ~30ms, both devices should get pinged. */
timer_test_add_offset(30);
cyclic_run();
ut_asserteq(reset_count + 1, state->wdt.reset_count);
ut_asserteq(val, sandbox_gpio_get_value(gpio, offset));
return 0;
}
DM_TEST(dm_test_wdt_watchdog_reset, UT_TESTF_SCAN_FDT);
|