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// SPDX-License-Identifier: GPL-2.0+
/*
* efi_selftest_event_groups
*
* Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
*
* This test checks the notification of group events and the
* following services:
* CreateEventEx, CloseEvent, SignalEvent, CheckEvent.
*/
#include <efi_selftest.h>
#define GROUP_SIZE 16
static struct efi_boot_services *boottime;
static efi_guid_t event_group =
EFI_GUID(0x2335905b, 0xc3b9, 0x4221, 0xa3, 0x71,
0x0e, 0x5b, 0x45, 0xc0, 0x56, 0x91);
/*
* Notification function, increments the notification count if parameter
* context is provided.
*
* @event notified event
* @context pointer to the notification count
*/
static void EFIAPI notify(struct efi_event *event, void *context)
{
unsigned int *count = context;
if (count)
++*count;
}
/*
* Setup unit test.
*
* @handle: handle of the loaded image
* @systable: system table
* @return: EFI_ST_SUCCESS for success
*/
static int setup(const efi_handle_t handle,
const struct efi_system_table *systable)
{
boottime = systable->boottime;
return EFI_ST_SUCCESS;
}
/*
* Execute unit test.
*
* Create multiple events in an event group. Signal each event once and check
* that all events are notified once in each round.
*
* @return: EFI_ST_SUCCESS for success
*/
static int execute(void)
{
unsigned int counter[GROUP_SIZE] = {0};
struct efi_event *events[GROUP_SIZE];
size_t i, j;
efi_status_t ret;
for (i = 0; i < GROUP_SIZE; ++i) {
ret = boottime->create_event_ex(0, TPL_NOTIFY,
notify, (void *)&counter[i],
&event_group, &events[i]);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to create event\n");
return EFI_ST_FAILURE;
}
}
for (i = 0; i < GROUP_SIZE; ++i) {
ret = boottime->signal_event(events[i]);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to signal event\n");
return EFI_ST_FAILURE;
}
for (j = 0; j < GROUP_SIZE; ++j) {
if (counter[j] != 2 * i + 1) {
efi_st_printf("i %u, j %u, count %u\n",
(unsigned int)i, (unsigned int)j,
(unsigned int)counter[j]);
efi_st_error("Notification function was not called\n");
return EFI_ST_FAILURE;
}
/* Clear signaled state */
ret = boottime->check_event(events[j]);
if (ret != EFI_SUCCESS) {
efi_st_error("Event was not signaled\n");
return EFI_ST_FAILURE;
}
if (counter[j] != 2 * i + 1) {
efi_st_printf("i %u, j %u, count %u\n",
(unsigned int)i, (unsigned int)j,
(unsigned int)counter[j]);
efi_st_error(
"Notification function was called\n");
return EFI_ST_FAILURE;
}
/* Call notification function */
ret = boottime->check_event(events[j]);
if (ret != EFI_NOT_READY) {
efi_st_error(
"Signaled state not cleared\n");
return EFI_ST_FAILURE;
}
if (counter[j] != 2 * i + 2) {
efi_st_printf("i %u, j %u, count %u\n",
(unsigned int)i, (unsigned int)j,
(unsigned int)counter[j]);
efi_st_error(
"Notification function not called\n");
return EFI_ST_FAILURE;
}
}
}
for (i = 0; i < GROUP_SIZE; ++i) {
ret = boottime->close_event(events[i]);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to close event\n");
return EFI_ST_FAILURE;
}
}
return EFI_ST_SUCCESS;
}
EFI_UNIT_TEST(eventgoups) = {
.name = "event groups",
.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
.setup = setup,
.execute = execute,
};
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