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/*
* Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/errno.h>
#include <sys/syslog.h>
#include <machine/cdefs.h>
#include <machine/cpu.h>
#include <dev/acpi/acpi.h>
#include <uacpi/sleep.h>
#define pr_trace(fmt, ...) kprintf("acpi: " fmt, ##__VA_ARGS__)
#define pr_error(...) pr_trace(__VA_ARGS__)
int
acpi_sleep(int type)
{
uacpi_status error;
uacpi_sleep_state state;
const uacpi_char *error_str;
switch (type) {
case ACPI_SLEEP_S5:
state = UACPI_SLEEP_STATE_S5;
break;
default:
return -EINVAL;
}
error = uacpi_prepare_for_sleep_state(state);
if (uacpi_unlikely_error(error)) {
error_str = uacpi_status_to_string(error);
pr_error("failed to prep sleep: %s\n", error_str);
return -EIO;
}
/*
* If we are entering the S5 sleep state, bring
* everything down first.
*/
if (type == ACPI_SLEEP_S5) {
pr_trace("powering off, halting all cores...\n");
cpu_halt_others();
md_intoff();
}
error = uacpi_enter_sleep_state(UACPI_SLEEP_STATE_S5);
if (uacpi_unlikely_error(error)) {
error_str = uacpi_status_to_string(error);
pr_error("could not enter S5 state: %s\n", error_str);
return -EIO;
}
return 0;
}
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