/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2018 Johannes Lundberg * Copyright (c) 2020 Vladimir Kondratyev * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 "opt_acpi.h" #include #include #include #include #include #include #include #include #include #include #define ACPI_AC_CLASS "ac_adapter" ACPI_MODULE_NAME("linux_acpi") enum { LINUX_ACPI_ACAD, LINUX_ACPI_VIDEO, LINUX_ACPI_TAGS /* must be last */ }; _Static_assert(LINUX_ACPI_TAGS <= LINUX_NOTIFY_TAGS, "Not enough space for tags in notifier_block structure"); #ifdef DEV_ACPI suspend_state_t pm_suspend_target_state = PM_SUSPEND_ON; static uint32_t linux_acpi_target_sleep_state = ACPI_STATE_S0; static eventhandler_tag resume_tag; static eventhandler_tag suspend_tag; ACPI_HANDLE bsd_acpi_get_handle(device_t bsddev) { return (acpi_get_handle(bsddev)); } bool acpi_check_dsm(ACPI_HANDLE handle, const char *uuid, int rev, uint64_t funcs) { if (funcs == 0) return (false); /* * From ACPI 6.3 spec 9.1.1: * Bit 0 indicates whether there is support for any functions other * than function 0 for the specified UUID and Revision ID. If set to * zero, no functions are supported (other than function zero) for the * specified UUID and Revision ID. */ funcs |= 1 << 0; return ((acpi_DSMQuery(handle, uuid, rev) & funcs) == funcs); } ACPI_OBJECT * acpi_evaluate_dsm_typed(ACPI_HANDLE handle, const char *uuid, int rev, int func, ACPI_OBJECT *argv4, ACPI_OBJECT_TYPE type) { ACPI_BUFFER buf; return (ACPI_SUCCESS(acpi_EvaluateDSMTyped(handle, uuid, rev, func, argv4, &buf, type)) ? (ACPI_OBJECT *)buf.Pointer : NULL); } static void linux_handle_power_suspend_event(void *arg __unused) { /* * Only support S3 for now. * acpi_sleep_event isn't always called so we use power_suspend_early * instead which means we don't know what state we're switching to. * TODO: Make acpi_sleep_event consistent */ linux_acpi_target_sleep_state = ACPI_STATE_S3; pm_suspend_target_state = PM_SUSPEND_MEM; } static void linux_handle_power_resume_event(void *arg __unused) { linux_acpi_target_sleep_state = ACPI_STATE_S0; pm_suspend_target_state = PM_SUSPEND_ON; } static void linux_handle_acpi_acad_event(void *arg, int data) { struct notifier_block *nb = arg; /* * Event type information is lost ATM in FreeBSD ACPI event handler. * Fortunately, drm-kmod do not distinct AC event types too, so we can * use any type e.g. ACPI_NOTIFY_BUS_CHECK that suits notifier handler. */ struct acpi_bus_event abe = { .device_class = ACPI_AC_CLASS, .type = ACPI_NOTIFY_BUS_CHECK, .data = data, }; nb->notifier_call(nb, 0, &abe); } static void linux_handle_acpi_video_event(void *arg, int type) { struct notifier_block *nb = arg; struct acpi_bus_event abe = { .device_class = ACPI_VIDEO_CLASS, .type = type, .data = 0, }; nb->notifier_call(nb, 0, &abe); } int register_acpi_notifier(struct notifier_block *nb) { nb->tags[LINUX_ACPI_ACAD] = EVENTHANDLER_REGISTER(acpi_acad_event, linux_handle_acpi_acad_event, nb, EVENTHANDLER_PRI_FIRST); nb->tags[LINUX_ACPI_VIDEO] = EVENTHANDLER_REGISTER(acpi_video_event, linux_handle_acpi_video_event, nb, EVENTHANDLER_PRI_FIRST); return (0); } int unregister_acpi_notifier(struct notifier_block *nb) { EVENTHANDLER_DEREGISTER(acpi_acad_event, nb->tags[LINUX_ACPI_ACAD]); EVENTHANDLER_DEREGISTER(acpi_video_event, nb->tags[LINUX_ACPI_VIDEO]); return (0); } uint32_t acpi_target_system_state(void) { return (linux_acpi_target_sleep_state); } struct acpi_dev_present_ctx { const char *hid; const char *uid; int64_t hrv; }; static ACPI_STATUS acpi_dev_present_cb(ACPI_HANDLE handle, UINT32 level, void *context, void **result) { ACPI_DEVICE_INFO *devinfo; struct acpi_dev_present_ctx *match = context; bool present = false; UINT32 sta, hrv; int i; if (handle == NULL) return (AE_OK); if (!ACPI_FAILURE(acpi_GetInteger(handle, "_STA", &sta)) && !ACPI_DEVICE_PRESENT(sta)) return (AE_OK); if (ACPI_FAILURE(AcpiGetObjectInfo(handle, &devinfo))) return (AE_OK); if ((devinfo->Valid & ACPI_VALID_HID) != 0 && strcmp(match->hid, devinfo->HardwareId.String) == 0) { present = true; } else if ((devinfo->Valid & ACPI_VALID_CID) != 0) { for (i = 0; i < devinfo->CompatibleIdList.Count; i++) { if (strcmp(match->hid, devinfo->CompatibleIdList.Ids[i].String) == 0) { present = true; break; } } } if (present && match->uid != NULL && ((devinfo->Valid & ACPI_VALID_UID) == 0 || strcmp(match->uid, devinfo->UniqueId.String) != 0)) present = false; AcpiOsFree(devinfo); if (!present) return (AE_OK); if (match->hrv != -1) { if (ACPI_FAILURE(acpi_GetInteger(handle, "_HRV", &hrv))) return (AE_OK); if (hrv != match->hrv) return (AE_OK); } return (AE_ERROR); } bool lkpi_acpi_dev_present(const char *hid, const char *uid, int64_t hrv) { struct acpi_dev_present_ctx match; int rv; match.hid = hid; match.uid = uid; match.hrv = hrv; rv = AcpiWalkNamespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, acpi_dev_present_cb, NULL, &match, NULL); return (rv == AE_ERROR); } static void linux_register_acpi_event_handlers(void *arg __unused) { /* * XXX johalun: acpi_{sleep,wakeup}_event can't be trusted, use * power_{suspend_early,resume} 'acpiconf -s 3' or 'zzz' will not * generate acpi_sleep_event... Lid open or wake on button generates * acpi_wakeup_event on one of my Dell laptops but not the other * (but it does power on)... is this a general thing? */ resume_tag = EVENTHANDLER_REGISTER(power_resume, linux_handle_power_resume_event, NULL, EVENTHANDLER_PRI_FIRST); suspend_tag = EVENTHANDLER_REGISTER(power_suspend_early, linux_handle_power_suspend_event, NULL, EVENTHANDLER_PRI_FIRST); } static void linux_deregister_acpi_event_handlers(void *arg __unused) { EVENTHANDLER_DEREGISTER(power_resume, resume_tag); EVENTHANDLER_DEREGISTER(power_suspend_early, suspend_tag); } SYSINIT(linux_acpi_events, SI_SUB_DRIVERS, SI_ORDER_ANY, linux_register_acpi_event_handlers, NULL); SYSUNINIT(linux_acpi_events, SI_SUB_DRIVERS, SI_ORDER_ANY, linux_deregister_acpi_event_handlers, NULL); #else /* !DEV_ACPI */ ACPI_HANDLE bsd_acpi_get_handle(device_t bsddev) { return (NULL); } bool acpi_check_dsm(ACPI_HANDLE handle, const char *uuid, int rev, uint64_t funcs) { return (false); } ACPI_OBJECT * acpi_evaluate_dsm_typed(ACPI_HANDLE handle, const char *uuid, int rev, int func, ACPI_OBJECT *argv4, ACPI_OBJECT_TYPE type) { return (NULL); } int register_acpi_notifier(struct notifier_block *nb) { return (0); } int unregister_acpi_notifier(struct notifier_block *nb) { return (0); } uint32_t acpi_target_system_state(void) { return (ACPI_STATE_S0); } bool lkpi_acpi_dev_present(const char *hid, const char *uid, int64_t hrv) { return (false); } #endif /* !DEV_ACPI */