diff options
| -rw-r--r-- | sys/dev/acpi/acpi_sleep.c | 80 | ||||
| -rw-r--r-- | sys/include/dev/acpi/acpi.h | 3 |
2 files changed, 83 insertions, 0 deletions
diff --git a/sys/dev/acpi/acpi_sleep.c b/sys/dev/acpi/acpi_sleep.c new file mode 100644 index 0000000..5c72031 --- /dev/null +++ b/sys/dev/acpi/acpi_sleep.c @@ -0,0 +1,80 @@ +/* + * 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; +} diff --git a/sys/include/dev/acpi/acpi.h b/sys/include/dev/acpi/acpi.h index 48eeee4..5108748 100644 --- a/sys/include/dev/acpi/acpi.h +++ b/sys/include/dev/acpi/acpi.h @@ -32,10 +32,13 @@ #include <sys/types.h> +#define ACPI_SLEEP_S5 0x00000000 + const char *acpi_oemid(void); void *acpi_query(const char *query); paddr_t acpi_rsdp(void); +int acpi_sleep(int type); void acpi_init(void); #endif /* !_ACPI_H_ */ |