From 116b6466b47530905ebe37337efeef92c92bdd20 Mon Sep 17 00:00:00 2001
From: njl <njl@FreeBSD.org>
Date: Tue, 29 Jun 2004 18:56:14 +0000
Subject: [PATCH] Add acpi methods for HID/CID probing, evaluating objects, and
 walking the namespace.  This is to allow decoupling of attachments from ACPI
 where they need some functionality when ACPI is present but do not want to
 require ACPI to always be loaded.

---
 sys/conf/files           |  1 +
 sys/conf/kmod.mk         |  2 +-
 sys/dev/acpica/acpi_if.m | 77 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 79 insertions(+), 1 deletion(-)
 create mode 100644 sys/dev/acpica/acpi_if.m

diff --git a/sys/conf/files b/sys/conf/files
index ef5e59bb5d2c..4b61f170ede0 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -274,6 +274,7 @@ dev/aac/aac_disk.c	optional aac
 dev/aac/aac_pci.c	optional aac pci
 dev/aac/aac_cam.c	optional aacp aac
 dev/aac/aac_linux.c		optional aac compat_linux
+dev/acpica/acpi_if.m		standard
 dev/acpica/acpi.c		optional acpi
 dev/acpica/acpi_acad.c		optional acpi
 dev/acpica/acpi_battery.c	optional acpi
diff --git a/sys/conf/kmod.mk b/sys/conf/kmod.mk
index 69538753a0ba..39cca2c26268 100644
--- a/sys/conf/kmod.mk
+++ b/sys/conf/kmod.mk
@@ -293,7 +293,7 @@ ${_src}:
 MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
     dev/iicbus/iicbus_if.m isa/isa_if.m \
     libkern/iconv_converter_if.m \
-    dev/eisa/eisa_if.m dev/mii/miibus_if.m \
+    dev/acpica/acpi_if.m dev/eisa/eisa_if.m dev/mii/miibus_if.m \
     dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
     dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
     dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
diff --git a/sys/dev/acpica/acpi_if.m b/sys/dev/acpica/acpi_if.m
new file mode 100644
index 000000000000..c2cdc1121e18
--- /dev/null
+++ b/sys/dev/acpica/acpi_if.m
@@ -0,0 +1,77 @@
+#
+# Copyright (c) 2004 Nate Lawson
+# 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.
+#
+# 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 <sys/bus.h>
+#include <sys/types.h>
+#include "acpi.h"
+
+INTERFACE acpi;
+
+#
+# Default implementation for the probe method.
+#
+CODE {
+	static char *
+	acpi_generic_id_probe(device_t bus, device_t dev, char **ids)
+	{
+		return (NULL);
+	}
+};
+
+#
+# Probe
+#
+METHOD char * id_probe {
+	device_t	bus;
+	device_t	dev;
+	char		**ids;
+} DEFAULT acpi_generic_id_probe;
+
+#
+# AcpiEvaluateObject
+#
+METHOD ACPI_STATUS evaluate_object {
+	device_t	bus;
+	device_t	dev;
+	ACPI_STRING 	pathname;
+	ACPI_OBJECT_LIST *parameters;
+	ACPI_BUFFER	*ret;
+};
+
+#
+# AcpiWalkNamespace
+#
+METHOD ACPI_STATUS walk_namespace {
+	device_t	bus;
+	device_t	dev;
+	ACPI_OBJECT_TYPE type;
+	UINT32		max_depth;
+	ACPI_WALK_CALLBACK user_fn;
+	void		*context;
+	void		**ret;
+};