1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * efi_selftest_event_groups
4 *
5 * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
6 *
7 * This test checks the notification of group events and the
8 * following services:
9 * CreateEventEx, CloseEvent, SignalEvent, CheckEvent.
10 */
11
12 #include <efi_selftest.h>
13
14 #define GROUP_SIZE 16
15
16 static struct efi_boot_services *boottime;
17 static efi_guid_t event_group =
18 EFI_GUID(0x2335905b, 0xc3b9, 0x4221, 0xa3, 0x71,
19 0x0e, 0x5b, 0x45, 0xc0, 0x56, 0x91);
20
21 /*
22 * Notification function, increments the notification count if parameter
23 * context is provided.
24 *
25 * @event notified event
26 * @context pointer to the notification count
27 */
notify(struct efi_event * event,void * context)28 static void EFIAPI notify(struct efi_event *event, void *context)
29 {
30 unsigned int *count = context;
31
32 if (count)
33 ++*count;
34 }
35
36 /*
37 * Setup unit test.
38 *
39 * @handle: handle of the loaded image
40 * @systable: system table
41 * @return: EFI_ST_SUCCESS for success
42 */
setup(const efi_handle_t handle,const struct efi_system_table * systable)43 static int setup(const efi_handle_t handle,
44 const struct efi_system_table *systable)
45 {
46 boottime = systable->boottime;
47
48 return EFI_ST_SUCCESS;
49 }
50
51 /*
52 * Execute unit test.
53 *
54 * Create multiple events in an event group. Signal each event once and check
55 * that all events are notified once in each round.
56 *
57 * @return: EFI_ST_SUCCESS for success
58 */
execute(void)59 static int execute(void)
60 {
61 unsigned int counter[GROUP_SIZE] = {0};
62 struct efi_event *events[GROUP_SIZE];
63 size_t i, j;
64 efi_status_t ret;
65
66 for (i = 0; i < GROUP_SIZE; ++i) {
67 ret = boottime->create_event_ex(0, TPL_NOTIFY,
68 notify, (void *)&counter[i],
69 &event_group, &events[i]);
70 if (ret != EFI_SUCCESS) {
71 efi_st_error("Failed to create event\n");
72 return EFI_ST_FAILURE;
73 }
74 }
75
76 for (i = 0; i < GROUP_SIZE; ++i) {
77 ret = boottime->signal_event(events[i]);
78 if (ret != EFI_SUCCESS) {
79 efi_st_error("Failed to signal event\n");
80 return EFI_ST_FAILURE;
81 }
82 for (j = 0; j < GROUP_SIZE; ++j) {
83 if (counter[j] != 2 * i + 1) {
84 efi_st_printf("i %u, j %u, count %u\n",
85 (unsigned int)i, (unsigned int)j,
86 (unsigned int)counter[j]);
87 efi_st_error("Notification function was not called\n");
88 return EFI_ST_FAILURE;
89 }
90 /* Clear signaled state */
91 ret = boottime->check_event(events[j]);
92 if (ret != EFI_SUCCESS) {
93 efi_st_error("Event was not signaled\n");
94 return EFI_ST_FAILURE;
95 }
96 if (counter[j] != 2 * i + 1) {
97 efi_st_printf("i %u, j %u, count %u\n",
98 (unsigned int)i, (unsigned int)j,
99 (unsigned int)counter[j]);
100 efi_st_error(
101 "Notification function was called\n");
102 return EFI_ST_FAILURE;
103 }
104 /* Call notification function */
105 ret = boottime->check_event(events[j]);
106 if (ret != EFI_NOT_READY) {
107 efi_st_error(
108 "Signaled state not cleared\n");
109 return EFI_ST_FAILURE;
110 }
111 if (counter[j] != 2 * i + 2) {
112 efi_st_printf("i %u, j %u, count %u\n",
113 (unsigned int)i, (unsigned int)j,
114 (unsigned int)counter[j]);
115 efi_st_error(
116 "Notification function not called\n");
117 return EFI_ST_FAILURE;
118 }
119 }
120 }
121
122 for (i = 0; i < GROUP_SIZE; ++i) {
123 ret = boottime->close_event(events[i]);
124 if (ret != EFI_SUCCESS) {
125 efi_st_error("Failed to close event\n");
126 return EFI_ST_FAILURE;
127 }
128 }
129
130 return EFI_ST_SUCCESS;
131 }
132
133 EFI_UNIT_TEST(eventgoups) = {
134 .name = "event groups",
135 .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
136 .setup = setup,
137 .execute = execute,
138 };
139