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Index: head/sys/compat/linuxkpi/common/include/acpi/acpi.h
===================================================================
--- head/sys/compat/linuxkpi/common/include/acpi/acpi.h
+++ head/sys/compat/linuxkpi/common/include/acpi/acpi.h
@@ -0,0 +1,100 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2017 Mark Johnston <markj@FreeBSD.org>
+ * Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _ACPI_ACPI_H_
+#define _ACPI_ACPI_H_
+
+/*
+ * FreeBSD import of ACPICA has a typedef for BOOLEAN which conflicts with
+ * amdgpu driver. Workaround it on preprocessor level.
+ */
+#define ACPI_USE_SYSTEM_INTTYPES
+#define BOOLEAN unsigned char
+typedef unsigned char UINT8;
+typedef unsigned short UINT16;
+typedef short INT16;
+typedef unsigned int UINT32;
+typedef int INT32;
+typedef uint64_t UINT64;
+typedef int64_t INT64;
+#include <contrib/dev/acpica/include/acpi.h>
+#undef BOOLEAN
+
+typedef ACPI_HANDLE acpi_handle;
+typedef ACPI_OBJECT acpi_object;
+typedef ACPI_OBJECT_HANDLER acpi_object_handler;
+typedef ACPI_OBJECT_TYPE acpi_object_type;
+typedef ACPI_STATUS acpi_status;
+typedef ACPI_STRING acpi_string;
+typedef ACPI_SIZE acpi_size;
+typedef ACPI_WALK_CALLBACK acpi_walk_callback;
+
+static inline ACPI_STATUS
+acpi_evaluate_object(ACPI_HANDLE Object, ACPI_STRING Pathname,
+ ACPI_OBJECT_LIST *ParameterObjects, ACPI_BUFFER *ReturnObjectBuffer)
+{
+ return (AcpiEvaluateObject(
+ Object, Pathname, ParameterObjects, ReturnObjectBuffer));
+}
+
+static inline const char *
+acpi_format_exception(ACPI_STATUS Exception)
+{
+ return (AcpiFormatException(Exception));
+}
+
+static inline ACPI_STATUS
+acpi_get_handle(ACPI_HANDLE Parent, ACPI_STRING Pathname,
+ ACPI_HANDLE *RetHandle)
+{
+ return (AcpiGetHandle(Parent, Pathname, RetHandle));
+}
+
+static inline ACPI_STATUS
+acpi_get_data(ACPI_HANDLE ObjHandle, ACPI_OBJECT_HANDLER Handler, void **Data)
+{
+ return (AcpiGetData(ObjHandle, Handler, Data));
+}
+
+static inline ACPI_STATUS
+acpi_get_name(ACPI_HANDLE Object, UINT32 NameType, ACPI_BUFFER *RetPathPtr)
+{
+ return (AcpiGetName(Object, NameType, RetPathPtr));
+}
+
+static inline ACPI_STATUS
+acpi_get_table(ACPI_STRING Signature, UINT32 Instance,
+ ACPI_TABLE_HEADER **OutTable)
+{
+ return (AcpiGetTable(Signature, Instance, OutTable));
+}
+
+#endif /* _ACPI_ACPI_H_ */
Index: head/sys/compat/linuxkpi/common/include/acpi/acpi_bus.h
===================================================================
--- head/sys/compat/linuxkpi/common/include/acpi/acpi_bus.h
+++ head/sys/compat/linuxkpi/common/include/acpi/acpi_bus.h
@@ -0,0 +1,52 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _ACPI_ACPI_BUS_H_
+#define _ACPI_ACPI_BUS_H_
+
+typedef char acpi_device_class[20];
+
+struct acpi_bus_event {
+ acpi_device_class device_class;
+ uint32_t type;
+ uint32_t data;
+};
+
+ACPI_HANDLE bsd_acpi_get_handle(device_t bsddev);
+bool acpi_check_dsm(ACPI_HANDLE handle, const char *uuid, int rev,
+ uint64_t funcs);
+ACPI_OBJECT * acpi_evaluate_dsm_typed(ACPI_HANDLE handle, const char *uuid,
+ int rev, int func, ACPI_OBJECT *argv4,
+ ACPI_OBJECT_TYPE type);
+int register_acpi_notifier(struct notifier_block *nb);
+int unregister_acpi_notifier(struct notifier_block *nb);
+uint32_t acpi_target_system_state(void);
+
+#endif /* !_ACPI_ACPI_BUS_H_ */
Index: head/sys/compat/linuxkpi/common/include/acpi/video.h
===================================================================
--- head/sys/compat/linuxkpi/common/include/acpi/video.h
+++ head/sys/compat/linuxkpi/common/include/acpi/video.h
@@ -0,0 +1,38 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _ACPI_VIDEO_H_
+#define _ACPI_VIDEO_H_
+
+#define ACPI_VIDEO_CLASS "video"
+
+#define ACPI_VIDEO_NOTIFY_PROBE 0x81
+
+#endif /* !_ACPI_VIDEO_H_ */
Index: head/sys/compat/linuxkpi/common/include/linux/acpi.h
===================================================================
--- head/sys/compat/linuxkpi/common/include/linux/acpi.h
+++ head/sys/compat/linuxkpi/common/include/linux/acpi.h
@@ -0,0 +1,42 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _LINUX_ACPI_H_
+#define _LINUX_ACPI_H_
+
+#include <linux/device.h>
+
+#include <acpi/acpi.h>
+#include <acpi/acpi_bus.h>
+
+#define ACPI_HANDLE(dev) \
+ ((dev)->bsddev != NULL ? bsd_acpi_get_handle((dev)->bsddev) : NULL)
+
+#endif /* _LINUX_ACPI_H_ */
Index: head/sys/compat/linuxkpi/common/src/linux_acpi.c
===================================================================
--- head/sys/compat/linuxkpi/common/src/linux_acpi.c
+++ head/sys/compat/linuxkpi/common/src/linux_acpi.c
@@ -0,0 +1,243 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2018 Johannes Lundberg <johalun@FreeBSD.org>
+ * Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include "opt_acpi.h"
+
+#include <sys/types.h>
+#include <sys/bus.h>
+#include <sys/eventhandler.h>
+#include <sys/kernel.h>
+
+#include <contrib/dev/acpica/include/acpi.h>
+#include <dev/acpica/acpivar.h>
+
+#include <linux/notifier.h>
+
+#include <acpi/acpi_bus.h>
+#include <acpi/video.h>
+
+#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
+
+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;
+}
+
+static void
+linux_handle_power_resume_event(void *arg __unused)
+{
+ linux_acpi_target_sleep_state = ACPI_STATE_S0;
+}
+
+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);
+}
+
+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);
+}
+
+#endif /* !DEV_ACPI */
Index: head/sys/conf/files
===================================================================
--- head/sys/conf/files
+++ head/sys/conf/files
@@ -4528,6 +4528,8 @@
# Linux Kernel Programming Interface
compat/linuxkpi/common/src/linux_kmod.c optional compat_linuxkpi \
compile-with "${LINUXKPI_C}"
+compat/linuxkpi/common/src/linux_acpi.c optional compat_linuxkpi acpi \
+ compile-with "${LINUXKPI_C}"
compat/linuxkpi/common/src/linux_compat.c optional compat_linuxkpi \
compile-with "${LINUXKPI_C}"
compat/linuxkpi/common/src/linux_current.c optional compat_linuxkpi \
Index: head/sys/modules/linuxkpi/Makefile
===================================================================
--- head/sys/modules/linuxkpi/Makefile
+++ head/sys/modules/linuxkpi/Makefile
@@ -23,6 +23,11 @@
linux_work.c \
linux_xarray.c
+.if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \
+ ${MACHINE_CPUARCH} == "i386"
+SRCS+= opt_acpi.h linux_acpi.c
+.endif
+
SRCS+= ${LINUXKPI_GENSRCS}
CFLAGS+= -I${SRCTOP}/sys/compat/linuxkpi/common/include

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