Date: Sun, 21 Jun 2009 18:52:51 +0200 From: Michael <freebsdusb@bindone.de> To: Rui Paulo <rpaulo@freebsd.org> Cc: freebsd-acpi@freebsd.org Subject: Re: Two new acpi modules, acpi_wmi and acpi_hp Message-ID: <4A3E6563.7040400@bindone.de> In-Reply-To: <C0DCC4DA-5E4C-46B2-9B84-4EBBC5920B3D@freebsd.org> References: <4A3E1784.2050406@bindone.de> <5AFA3C27-D3DB-48DA-9AF3-9E14D11EEC61@freebsd.org> <C0DCC4DA-5E4C-46B2-9B84-4EBBC5920B3D@freebsd.org>
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Rui Paulo wrote:
> On 21 Jun 2009, at 15:08, Rui Paulo wrote:
>
>> On 21 Jun 2009, at 12:20, Michael wrote:
>>
>>> Hello,
>>>
>>> I wrote two new acpi modules last year and finally found the time to fix
>>> them, add some missing features and write man pages.
>>
>> Michael, this is great work! I'll review and see if we can ship it
>> with 8.0!
>
> Michael, this looks good, but there are two style nits that we need to fix.
> * we should try not going over the 80 column mark
> * add a empty new line before every return
>
> If you could send me a new patch for 8.0 with these fixes, I'll commit
> it (unless someone else has objections).
>
> Regards,
> --
> Rui Paulo
>
Hi Rui,
I figured that adding newlines in conditional returns makes no sense
(see my last post), so I did reformat everything to be (close to) 80
columns a line add added newlines in front of returns at the end of a
function.
Please find attached the complete patch again (against clean
7.2-RELEASE) and the files that changed (acpi_hp.c and acpi_wmi.c).
Btw, what is the normal adoption path for 7-STABLE (I would assume first
it gets into HEAD and if there's interest there will be a backport to 7?
It should at least work in there, even so for HP laptops my guess is
that most users will use 8 anyway because of wireless support).
cheers
Michael
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filename="acpi_wmi_and_acpi_hp_v2.patch"
--- sys/i386/conf/NOTES~ 2008-12-29 04:48:16.000000000 +0100
+++ sys/i386/conf/NOTES 2009-06-21 12:10:16.000000000 +0100
@@ -471,6 +471,9 @@
options ACPI_DEBUG
#!options ACPI_NO_SEMAPHORES
+# ACPI WMI Mapping driver
+device acpi_wmi
+
# ACPI Asus Desktop Extras. (voltage, temp, fan)
device acpi_aiboost
@@ -480,6 +483,9 @@
# ACPI Fujitsu Extras (Buttons)
device acpi_fujitsu
+# ACPI extras driver for HP laptops
+device acpi_hp
+
# ACPI extras driver for IBM laptops
device acpi_ibm
--- sys/modules/acpi/Makefile~ 2008-12-29 04:41:59.000000000 +0100
+++ sys/modules/acpi/Makefile 2009-06-21 12:10:59.000000000 +0100
@@ -4,7 +4,7 @@
SUBDIR= acpi
.endif
-SUBDIR+= acpi_aiboost acpi_asus acpi_fujitsu acpi_ibm \
+SUBDIR+= acpi_wmi acpi_aiboost acpi_asus acpi_fujitsu acpi_hp acpi_ibm \
acpi_panasonic acpi_sony acpi_toshiba acpi_video \
acpi_dock
--- share/man/man4/man4.i386/acpi_hp.4~ 2009-06-21 12:09:58.000000000 +0200
+++ share/man/man4/man4.i386/acpi_hp.4 2009-06-21 12:10:21.229934511 +0200
@@ -0,0 +1,273 @@
+.\" Copyright (c) 2009 Michael Gmelin
+.\" 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd June 21, 2009
+.Dt ACPI_HP 4 i386
+.Os
+.Sh NAME
+.Nm acpi_hp
+.Nd "ACPI extras driver for HP laptops"
+.Sh SYNOPSIS
+To compile this driver into the kernel,
+place the following line in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device acpi_hp"
+.Ed
+.Pp
+Alternatively, to load the driver as a
+module at boot time, place the following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+acpi_hp_load="YES"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for ACPI-controlled features found on HP laptops
+that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p).
+.Pp
+The main purpose of this driver is to provide an interface,
+accessible via
+.Xr sysctl 8 ,
+.Xr devd 8 and
+.Xr devfs 8 ,
+through which applications can determine and change the status of
+various laptop components and BIOS settings.
+.Pp
+.Ss Xr devd 8 Ss Events
+Devd events received by
+.Xr devd 8
+provide the following information:
+.Pp
+.Bl -tag -width "subsystem" -offset indent -compact
+.It system
+.Qq Li ACPI
+.It subsystem
+.Qq Li HP
+.It type
+The source of the event in the ACPI namespace.
+The value depends on the model.
+.It notify
+Event code (see below).
+.El
+.Pp
+Event codes:
+.Pp
+.Bl -tag -width "0xc0" -offset indent -compact
+.It Li 0xc0
+WLAN on air status changed to 0 (not on air)
+.It Li 0xc1
+WLAN on air status changed to 1 (on air)
+.It Li 0xd0
+Bluetooth on air status changed to 0 (not on air)
+.It Li 0xd1
+Bluetooth on air status changed to 1 (on air)
+.It Li 0xe0
+WWAN on air status changed to 0 (not on air)
+.It Li 0xe1
+WWAN on air status changed to 1 (on air)
+.El
+.Ss Xr devfs 8 Ss Device
+You can read /dev/hpcmi to see your current BIOS settings. The detail level
+can be adjusted by setting the sysctl
+.Va cmi_detail
+as described below.
+.Sh SYSCTL VARIABLES
+The following sysctls are currently implemented:
+.Ss WLAN:
+.Bl -tag -width indent
+.It Va dev.acpi_hp.0.wlan_enabled
+Toggle WLAN chip activity.
+.It Va dev.acpi_hp.0.wlan_radio
+(read-only)
+WLAN radio status (controlled by hardware switch)
+.It Va dev.acpi_hp.0.wlan_on_air
+(read-only)
+WLAN on air (chip enabled, hardware switch enabled + enabled in BIOS)
+.It Va dev.acpi_hp.0.wlan_enabled_if_radio_on
+If set to 1, the WLAN chip will be enabled if the radio is turned on
+.It Va dev.acpi_hp.0.wlan_disable_if_radio_off
+If set to 1, the WLAN chip will be disabled if the radio is turned off
+.El
+.Ss Bluetooth:
+.Bl -tag -width indent
+.It Va dev.acpi_hp.0.bt_enabled
+Toggle Bluetooth chip activity.
+.It Va dev.acpi_hp.0.bt_radio
+(read-only)
+Bluetooth radio status (controlled by hardware switch)
+.It Va dev.acpi_hp.0.bt_on_air
+(read-only)
+Bluetooth on air (chip enabled, hardware switch enabled + enabled in BIOS)
+.It Va dev.acpi_hp.0.bt_enabled_if_radio_on
+If set to 1, the Bluetooth chip will be enabled if the radio is turned on
+.It Va dev.acpi_hp.0.bt_disable_if_radio_off
+If set to 1, the Bluetooth chip will be disabled if the radio is turned off
+.El
+.Ss WWAN:
+.Bl -tag -width indent
+.It Va dev.acpi_hp.0.wwan_enabled
+Toggle WWAN chip activity.
+.It Va dev.acpi_hp.0.wwan_radio
+(read-only)
+WWAN radio status (controlled by hardware switch)
+.It Va dev.acpi_hp.0.wwan_on_air
+(read-only)
+WWAN on air (chip enabled, hardware switch enabled + enabled in BIOS)
+.It Va dev.acpi_hp.0.wwan_enabled_if_radio_on
+If set to 1, the WWAN chip will be enabled if the radio is turned on
+.It Va dev.acpi_hp.0.wwan_disable_if_radio_off
+If set to 1, the WWAN chip will be disabled if the radio is turned off
+.El
+.Ss Misc:
+.Bl -tag -width indent
+.It Va dev.acpi_hp.0.als_enabled
+Toggle ambient light sensor (ALS)
+.It Va dev.acpi_hp.0.display
+(read-only)
+Display status (bitmask)
+.It Va dev.acpi_hp.0.hdd_temperature
+(read-only)
+HDD temperature
+.It Va dev.acpi_hp.0.is_docked
+(read-only)
+Docking station status (1 if docked)
+.It Va dev.acpi_hp.0.cmi_detail
+Bitmask to control detail level in /dev/hpcmi output (values can be ORed).
+.Bl -tag -width "0x01" -offset indent -compact
+.It Li 0x01
+Show path component of BIOS setting
+.It Li 0x02
+Show a list of valid options for the BIOS setting
+.It Li 0x04
+Show additional flags of BIOS setting (ReadOnly etc.)
+.El
+.El
+.Pp
+Defaults for these sysctls can be set in
+.Xr sysctl.conf 5 .
+.Sh FILES
+.Bl -tag -width ".Pa /dev/hpcmi"
+.It Pa /dev/hpcmi
+Interface to read BIOS settings
+.El
+.Sh EXAMPLES
+The following can be added to
+.Xr devd.conf 5
+in order disable the LAN interface when WLAN on air and reenable if it's
+not:
+.Bd -literal -offset indent
+notify 0 {
+ match "system" "ACPI";
+ match "subsystem" "HP";
+ match "notify" "0xc0";
+ action "ifconfig em0 up";
+};
+
+notify 0 {
+ match "system" "ACPI";
+ match "subsystem" "HP";
+ match "notify" "0xc1";
+ action "ifconfig em0 down";
+};
+.Ed
+.Pp
+Enable the ambient light sensor:
+.Bd -literal -offset indent
+sysctl dev.acpi_hp.0.als_enabled=1
+.Ed
+.Pp
+Enable Bluetooth:
+.Bd -literal -offset indent
+sysctl dev.acpi_hp.0.bt_enabled=1
+.Ed
+.Pp
+Get BIOS settings:
+.Bd -literal -offset indent
+cat /dev/hpcmi
+
+Serial Port Disable
+Infrared Port Enable
+Parallel Port Disable
+Flash Media Reader Disable
+USB Ports including Express Card slot Enable
+1394 Port Enable
+Cardbus Slot Disable
+Express Card Slot Disable
+(...)
+.Ed
+.Pp
+Set maximum detail level for /dev/hpcmi output:
+.Bd -literal -offset indent
+sysctl dev.acpi_hp.0.cmi_detail=7
+.Ed
+.Pp
+
+
+
+.Sh SEE ALSO
+.Xr acpi 4 ,
+.Xr acpi_wmi 4 ,
+.Xr sysctl.conf 5 ,
+.Xr devd 8 ,
+.Xr devfs 8 ,
+.Xr sysctl 8
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx CURRENT .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+driver was written by
+.An Michael Gmelin Aq freebsd@grem.de
+.Pp
+It has been inspired by hp-wmi driver, which implements a subset of these
+features (hotkeys) on Linux.
+.Pp
+.Bl -tag -width indent
+.It HP CMI whitepaper:
+http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf
+.It wmi-hp for Linux:
+http://www.kernel.org
+.It WMI and ACPI:
+http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
+.El
+.Pp
+This manual page was written by
+.An Michael Gmelin Aq freebsd@grem.de
+.Sh BUGS
+This driver is experimental and has only been tested on CURRENT i386 on an
+HP Compaq 8510p which featured all supported wireless devices (WWAN/BT/WLAN).
+Expect undefined results when operating on different hardware.
+.Pp
+Loading the driver is slow. Reading from /dev/hpcmi is even slower.
+.Pp
+Additional features like HP specific sensor readings or writing BIOS
+settings are not supported.
--- sys/dev/acpi_support/acpi_hp.c~ 2009-06-21 18:50:08.924078040 +0200
+++ sys/dev/acpi_support/acpi_hp.c 2009-06-21 18:50:54.166723000 +0200
@@ -0,0 +1,1182 @@
+/*-
+ * Copyright (c) 2009 Michael Gmelin <freebsd@grem.de>
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Driver for extra ACPI-controlled features found on HP laptops
+ * that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p).
+ * Allows to control and read status of integrated hardware and read
+ * BIOS settings through CMI.
+ * Inspired by the hp-wmi driver, which implements a subset of these
+ * features (hotkeys) on Linux.
+ *
+ * HP CMI whitepaper:
+ * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf
+ * wmi-hp for Linux:
+ * http://www.kernel.org
+ * WMI and ACPI:
+ * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
+ */
+
+#include "opt_acpi.h"
+#include <sys/param.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/proc.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/sbuf.h>
+#include <sys/module.h>
+#include <sys/sysctl.h>
+
+#include <contrib/dev/acpica/acpi.h>
+#include <dev/acpica/acpivar.h>
+#include "acpi_wmi_if.h"
+
+#define _COMPONENT ACPI_OEM
+ACPI_MODULE_NAME("HP")
+
+#define ACPI_HP_WMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
+#define ACPI_HP_WMI_BIOS_GUID "5FB7F034-2C63-45E9-BE91-3D44E2C707E4"
+#define ACPI_HP_WMI_CMI_GUID "2D114B49-2DFB-4130-B8FE-4A3C09E75133"
+
+#define ACPI_HP_WMI_DISPLAY_COMMAND 0x1
+#define ACPI_HP_WMI_HDDTEMP_COMMAND 0x2
+#define ACPI_HP_WMI_ALS_COMMAND 0x3
+#define ACPI_HP_WMI_DOCK_COMMAND 0x4
+#define ACPI_HP_WMI_WIRELESS_COMMAND 0x5
+
+#define ACPI_HP_METHOD_WLAN_ENABLED 1
+#define ACPI_HP_METHOD_WLAN_RADIO 2
+#define ACPI_HP_METHOD_WLAN_ON_AIR 3
+#define ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON 4
+#define ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF 5
+#define ACPI_HP_METHOD_BLUETOOTH_ENABLED 6
+#define ACPI_HP_METHOD_BLUETOOTH_RADIO 7
+#define ACPI_HP_METHOD_BLUETOOTH_ON_AIR 8
+#define ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON 9
+#define ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF 10
+#define ACPI_HP_METHOD_WWAN_ENABLED 11
+#define ACPI_HP_METHOD_WWAN_RADIO 12
+#define ACPI_HP_METHOD_WWAN_ON_AIR 13
+#define ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON 14
+#define ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF 15
+#define ACPI_HP_METHOD_ALS 16
+#define ACPI_HP_METHOD_DISPLAY 17
+#define ACPI_HP_METHOD_HDDTEMP 18
+#define ACPI_HP_METHOD_DOCK 19
+#define ACPI_HP_METHOD_CMI_DETAIL 20
+
+#define HP_MASK_WWAN_ON_AIR 0x1000000
+#define HP_MASK_BLUETOOTH_ON_AIR 0x10000
+#define HP_MASK_WLAN_ON_AIR 0x100
+#define HP_MASK_WWAN_RADIO 0x8000000
+#define HP_MASK_BLUETOOTH_RADIO 0x80000
+#define HP_MASK_WLAN_RADIO 0x800
+#define HP_MASK_WWAN_ENABLED 0x2000000
+#define HP_MASK_BLUETOOTH_ENABLED 0x20000
+#define HP_MASK_WLAN_ENABLED 0x200
+
+#define ACPI_HP_CMI_DETAIL_PATHS 0x01
+#define ACPI_HP_CMI_DETAIL_ENUMS 0x02
+#define ACPI_HP_CMI_DETAIL_FLAGS 0x04
+
+struct acpi_hp_inst_seq_pair {
+ UINT32 sequence; /* sequence number as suggested by cmi bios */
+ UINT8 instance; /* object instance on guid */
+};
+
+struct acpi_hp_softc {
+ device_t dev;
+ ACPI_HANDLE handle;
+ device_t wmi_dev;
+ int has_notify; /* notification GUID found */
+ int has_cmi; /* CMI GUID found */
+ int cmi_detail; /* CMI detail level
+ (set by sysctl) */
+ int wlan_enable_if_radio_on; /* set by sysctl */
+ int wlan_disable_if_radio_off; /* set by sysctl */
+ int bluetooth_enable_if_radio_on; /* set by sysctl */
+ int bluetooth_disable_if_radio_off; /* set by sysctl */
+ int wwan_enable_if_radio_on; /* set by sysctl */
+ int wwan_disable_if_radio_off; /* set by sysctl */
+ int was_wlan_on_air; /* last known WLAN
+ on air status */
+ int was_bluetooth_on_air; /* last known BT
+ on air status */
+ int was_wwan_on_air; /* last known WWAN
+ on air status */
+ struct sysctl_ctx_list *sysctl_ctx;
+ struct sysctl_oid *sysctl_tree;
+ struct cdev *hpcmi_dev_t; /* hpcmi device handle */
+ struct sbuf hpcmi_sbuf; /* /dev/hpcmi output sbuf */
+ pid_t hpcmi_open_pid; /* pid operating on
+ /dev/hpcmi */
+ int hpcmi_bufptr; /* current pointer position
+ in /dev/hpcmi output buffer
+ */
+ int cmi_order_size; /* size of cmi_order list */
+ struct acpi_hp_inst_seq_pair cmi_order[128]; /* list of CMI
+ instances ordered by BIOS suggested sequence */
+};
+
+static struct {
+ char *name;
+ int method;
+ char *description;
+ int access;
+} acpi_hp_sysctls[] = {
+ {
+ .name = "wlan_enabled",
+ .method = ACPI_HP_METHOD_WLAN_ENABLED,
+ .description = "Enable/Disable WLAN (WiFi)",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wlan_radio",
+ .method = ACPI_HP_METHOD_WLAN_RADIO,
+ .description = "WLAN radio status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "wlan_on_air",
+ .method = ACPI_HP_METHOD_WLAN_ON_AIR,
+ .description = "WLAN radio ready to use (enabled and radio)",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "wlan_enable_if_radio_on",
+ .method = ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON,
+ .description = "Enable WLAN if radio is turned on",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wlan_disable_if_radio_off",
+ .method = ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF,
+ .description = "Disable WLAN if radio is turned off",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "bt_enabled",
+ .method = ACPI_HP_METHOD_BLUETOOTH_ENABLED,
+ .description = "Enable/Disable Bluetooth",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "bt_radio",
+ .method = ACPI_HP_METHOD_BLUETOOTH_RADIO,
+ .description = "Bluetooth radio status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "bt_on_air",
+ .method = ACPI_HP_METHOD_BLUETOOTH_ON_AIR,
+ .description = "Bluetooth radio ready to use"
+ " (enabled and radio)",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "bt_enable_if_radio_on",
+ .method = ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON,
+ .description = "Enable bluetooth if radio is turned on",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "bt_disable_if_radio_off",
+ .method = ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF,
+ .description = "Disable bluetooth if radio is turned off",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wwan_enabled",
+ .method = ACPI_HP_METHOD_WWAN_ENABLED,
+ .description = "Enable/Disable WWAN (UMTS)",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wwan_radio",
+ .method = ACPI_HP_METHOD_WWAN_RADIO,
+ .description = "WWAN radio status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "wwan_on_air",
+ .method = ACPI_HP_METHOD_WWAN_ON_AIR,
+ .description = "WWAN radio ready to use (enabled and radio)",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "wwan_enable_if_radio_on",
+ .method = ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON,
+ .description = "Enable WWAN if radio is turned on",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "wwan_disable_if_radio_off",
+ .method = ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF,
+ .description = "Disable WWAN if radio is turned off",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "als_enabled",
+ .method = ACPI_HP_METHOD_ALS,
+ .description = "Enable/Disable ALS (Ambient light sensor)",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+ {
+ .name = "display",
+ .method = ACPI_HP_METHOD_DISPLAY,
+ .description = "Display status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "hdd_temperature",
+ .method = ACPI_HP_METHOD_HDDTEMP,
+ .description = "HDD temperature",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "is_docked",
+ .method = ACPI_HP_METHOD_DOCK,
+ .description = "Docking station status",
+ .access = CTLTYPE_INT | CTLFLAG_RD
+ },
+ {
+ .name = "cmi_detail",
+ .method = ACPI_HP_METHOD_CMI_DETAIL,
+ .description = "Details shown in CMI output "
+ "(cat /dev/hpcmi)",
+ .access = CTLTYPE_INT | CTLFLAG_RW
+ },
+
+ { NULL, 0, NULL, 0 }
+};
+
+ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping");
+
+static int acpi_hp_probe(device_t dev);
+static int acpi_hp_attach(device_t dev);
+static int acpi_hp_detach(device_t dev);
+
+static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc);
+static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS);
+static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method,
+ int arg, int oldarg);
+static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method);
+static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command,
+ int is_write, int val);
+static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context);
+static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid,
+ UINT8 instance, char* outbuf, size_t outsize,
+ UINT32* sequence, int detail);
+static void acpi_hp_hex_decode(char* buffer);
+
+static d_open_t acpi_hp_hpcmi_open;
+static d_close_t acpi_hp_hpcmi_close;
+static d_read_t acpi_hp_hpcmi_read;
+
+/* handler /dev/hpcmi device */
+static struct cdevsw hpcmi_cdevsw = {
+ .d_version = D_VERSION,
+ .d_open = acpi_hp_hpcmi_open,
+ .d_close = acpi_hp_hpcmi_close,
+ .d_read = acpi_hp_hpcmi_read,
+ .d_name = "hpcmi",
+};
+
+static device_method_t acpi_hp_methods[] = {
+ DEVMETHOD(device_probe, acpi_hp_probe),
+ DEVMETHOD(device_attach, acpi_hp_attach),
+ DEVMETHOD(device_detach, acpi_hp_detach),
+ {0, 0}
+};
+
+static driver_t acpi_hp_driver = {
+ "acpi_hp",
+ acpi_hp_methods,
+ sizeof(struct acpi_hp_softc),
+};
+
+static devclass_t acpi_hp_devclass;
+
+DRIVER_MODULE(acpi_hp, acpi, acpi_hp_driver, acpi_hp_devclass,
+ 0, 0);
+MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1);
+MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1);
+
+static void
+acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc)
+{
+ int wireless;
+ int new_wlan_status;
+ int new_bluetooth_status;
+ int new_wwan_status;
+
+ wireless = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ new_wlan_status = -1;
+ new_bluetooth_status = -1;
+ new_wwan_status = -1;
+
+ device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless);
+ if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO)
+ && (wireless & HP_MASK_WLAN_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100);
+ new_wlan_status = 0;
+ }
+ else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO)
+ && !(wireless & HP_MASK_WLAN_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101);
+ new_wlan_status = 1;
+ }
+ if (sc->bluetooth_disable_if_radio_off &&
+ !(wireless & HP_MASK_BLUETOOTH_RADIO) &&
+ (wireless & HP_MASK_BLUETOOTH_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200);
+ new_bluetooth_status = 0;
+ }
+ else if (sc->bluetooth_enable_if_radio_on &&
+ (wireless & HP_MASK_BLUETOOTH_RADIO) &&
+ !(wireless & HP_MASK_BLUETOOTH_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202);
+ new_bluetooth_status = 1;
+ }
+ if (sc->wwan_disable_if_radio_off &&
+ !(wireless & HP_MASK_WWAN_RADIO) &&
+ (wireless & HP_MASK_WWAN_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400);
+ new_wwan_status = 0;
+ }
+ else if (sc->wwan_enable_if_radio_on &&
+ (wireless & HP_MASK_WWAN_RADIO) &&
+ !(wireless & HP_MASK_WWAN_ENABLED)) {
+ acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404);
+ new_wwan_status = 1;
+ }
+
+ if (new_wlan_status == -1) {
+ new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR);
+ if ((new_wlan_status?1:0) != sc->was_wlan_on_air) {
+ sc->was_wlan_on_air = sc->was_wlan_on_air?0:1;
+ device_printf(sc->wmi_dev,
+ "WLAN on air changed to %i "
+ "(new_wlan_status is %i)\n",
+ sc->was_wlan_on_air, new_wlan_status);
+ acpi_UserNotify("HP", sc->handle,
+ 0xc0+sc->was_wlan_on_air);
+ }
+ }
+ if (new_bluetooth_status == -1) {
+ new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR);
+ if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) {
+ sc->was_bluetooth_on_air = sc->was_bluetooth_on_air?
+ 0:1;
+ device_printf(sc->wmi_dev, "BLUETOOTH on air changed"
+ " to %i (new_bluetooth_status is %i)\n",
+ sc->was_bluetooth_on_air, new_bluetooth_status);
+ acpi_UserNotify("HP", sc->handle,
+ 0xd0+sc->was_bluetooth_on_air);
+ }
+ }
+ if (new_wwan_status == -1) {
+ new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR);
+ if ((new_wwan_status?1:0) != sc->was_wwan_on_air) {
+ sc->was_wwan_on_air = sc->was_wwan_on_air?0:1;
+ device_printf(sc->wmi_dev, "WWAN on air changed to %i"
+ " (new_wwan_status is %i)\n",
+ sc->was_wwan_on_air, new_wwan_status);
+ acpi_UserNotify("HP", sc->handle,
+ 0xe0+sc->was_wwan_on_air);
+ }
+ }
+}
+
+static int
+acpi_hp_probe(device_t dev)
+{
+ if (acpi_disabled("hp") || device_get_unit(dev) != 0)
+ return (ENXIO);
+ device_set_desc(dev, "HP ACPI-WMI Mapping");
+
+ return (0);
+}
+
+static int
+acpi_hp_attach(device_t dev)
+{
+ struct acpi_hp_softc *sc;
+ struct acpi_softc *acpi_sc;
+ devclass_t wmi_devclass;
+ int arg;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+ sc->handle = acpi_get_handle(dev);
+ sc->has_notify = 0;
+ sc->has_cmi = 0;
+ sc->bluetooth_enable_if_radio_on = 0;
+ sc->bluetooth_disable_if_radio_off = 0;
+ sc->wlan_enable_if_radio_on = 0;
+ sc->wlan_disable_if_radio_off = 0;
+ sc->wlan_enable_if_radio_on = 0;
+ sc->wlan_disable_if_radio_off = 0;
+ sc->was_wlan_on_air = 0;
+ sc->was_bluetooth_on_air = 0;
+ sc->was_wwan_on_air = 0;
+ sc->cmi_detail = 0;
+ sc->cmi_order_size = -1;
+ memset(sc->cmi_order, 0, sizeof(sc->cmi_order));
+ acpi_sc = acpi_device_get_parent_softc(dev);
+
+ if (!(wmi_devclass = devclass_find ("acpi_wmi"))) {
+ device_printf(dev, "Couldn't find acpi_wmi devclass\n");
+ return (EINVAL);
+ }
+ if (!(sc->wmi_dev = devclass_get_device(wmi_devclass, 0))) {
+ device_printf(dev, "Couldn't find acpi_wmi device\n");
+ return (EINVAL);
+ }
+ if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
+ ACPI_HP_WMI_BIOS_GUID)) {
+ device_printf(dev,
+ "WMI device does not provide the HP BIOS GUID\n");
+ return (EINVAL);
+ }
+ if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
+ ACPI_HP_WMI_EVENT_GUID)) {
+ device_printf(dev,
+ "HP event GUID detected, installing event handler\n");
+ if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev,
+ ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) {
+ device_printf(dev,
+ "Could not install notification handler!\n");
+ }
+ else {
+ sc->has_notify = 1;
+ }
+ }
+ if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID)) {
+ device_printf(dev, "HP CMI GUID detected\n");
+ sc->has_cmi = 1;
+ }
+
+ if (sc->has_cmi) {
+ sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT,
+ GID_WHEEL, 0644, "hpcmi");
+ sc->hpcmi_dev_t->si_drv1 = sc;
+ sc->hpcmi_open_pid = 0;
+ sc->hpcmi_bufptr = -1;
+ }
+
+ ACPI_SERIAL_BEGIN(hp);
+
+ sc->sysctl_ctx = device_get_sysctl_ctx(dev);
+ sc->sysctl_tree = device_get_sysctl_tree(dev);
+ for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) {
+ arg = 0;
+ if ((!sc->has_notify &&
+ (acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON ||
+ acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) ||
+ (arg = acpi_hp_sysctl_get(sc,
+ acpi_hp_sysctls[i].method)) < 0) {
+ continue;
+ }
+ if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) {
+ sc->was_wlan_on_air = arg;
+ }
+ else if (acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_BLUETOOTH_ON_AIR) {
+ sc->was_bluetooth_on_air = arg;
+ }
+ else if (acpi_hp_sysctls[i].method ==
+ ACPI_HP_METHOD_WWAN_ON_AIR) {
+ sc->was_wwan_on_air = arg;
+ }
+
+ SYSCTL_ADD_PROC(sc->sysctl_ctx,
+ SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
+ acpi_hp_sysctls[i].name, acpi_hp_sysctls[i].access,
+ sc, i, acpi_hp_sysctl, "I",
+ acpi_hp_sysctls[i].description);
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (0);
+}
+
+static int
+acpi_hp_detach(device_t dev)
+{
+ int ret;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
+ struct acpi_hp_softc *sc = device_get_softc(dev);
+ if (sc->has_cmi && sc->hpcmi_open_pid != 0) {
+ ret = EBUSY;
+ }
+ else {
+ if (sc->has_notify) {
+ ACPI_WMI_REMOVE_EVENT_HANDLER(dev,
+ ACPI_HP_WMI_EVENT_GUID);
+ }
+ if (sc->hpcmi_bufptr != -1) {
+ sbuf_delete(&sc->hpcmi_sbuf);
+ sc->hpcmi_bufptr = -1;
+ }
+ sc->hpcmi_open_pid = 0;
+ destroy_dev(sc->hpcmi_dev_t);
+ ret = 0;
+ }
+
+ return (ret);
+}
+
+static int
+acpi_hp_sysctl(SYSCTL_HANDLER_ARGS)
+{
+ struct acpi_hp_softc *sc;
+ int arg;
+ int oldarg;
+ int error = 0;
+ int function;
+ int method;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = (struct acpi_hp_softc *)oidp->oid_arg1;
+ function = oidp->oid_arg2;
+ method = acpi_hp_sysctls[function].method;
+
+ ACPI_SERIAL_BEGIN(hp);
+ arg = acpi_hp_sysctl_get(sc, method);
+ oldarg = arg;
+ error = sysctl_handle_int(oidp, &arg, 0, req);
+ if (!error && req->newptr != NULL) {
+ error = acpi_hp_sysctl_set(sc, method, arg, oldarg);
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (error);
+}
+
+static int
+acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method)
+{
+ int val = 0;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ ACPI_SERIAL_ASSERT(hp);
+
+ switch (method) {
+ case ACPI_HP_METHOD_WLAN_ENABLED:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WLAN_ENABLED) != 0);
+ break;
+ case ACPI_HP_METHOD_WLAN_RADIO:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WLAN_RADIO) != 0);
+ break;
+ case ACPI_HP_METHOD_WLAN_ON_AIR:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WLAN_ON_AIR) != 0);
+ break;
+ case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
+ val = sc->wlan_enable_if_radio_on;
+ break;
+ case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
+ val = sc->wlan_disable_if_radio_off;
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_RADIO:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_ON_AIR:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
+ val = sc->bluetooth_enable_if_radio_on;
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
+ val = sc->bluetooth_disable_if_radio_off;
+ break;
+ case ACPI_HP_METHOD_WWAN_ENABLED:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WWAN_ENABLED) != 0);
+ break;
+ case ACPI_HP_METHOD_WWAN_RADIO:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WWAN_RADIO) != 0);
+ break;
+ case ACPI_HP_METHOD_WWAN_ON_AIR:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
+ val = ((val & HP_MASK_WWAN_ON_AIR) != 0);
+ break;
+ case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
+ val = sc->wwan_enable_if_radio_on;
+ break;
+ case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
+ val = sc->wwan_disable_if_radio_off;
+ break;
+ case ACPI_HP_METHOD_ALS:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_ALS_COMMAND, 0, 0);
+ break;
+ case ACPI_HP_METHOD_DISPLAY:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0);
+ break;
+ case ACPI_HP_METHOD_HDDTEMP:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0);
+ break;
+ case ACPI_HP_METHOD_DOCK:
+ val = acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_DOCK_COMMAND, 0, 0);
+ break;
+ case ACPI_HP_METHOD_CMI_DETAIL:
+ val = sc->cmi_detail;
+ break;
+ }
+
+ return (val);
+}
+
+static int
+acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg)
+{
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ ACPI_SERIAL_ASSERT(hp);
+
+ if (method != ACPI_HP_METHOD_CMI_DETAIL)
+ arg = arg?1:0;
+
+ if (arg != oldarg) {
+ switch (method) {
+ case ACPI_HP_METHOD_WLAN_ENABLED:
+ return (acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1,
+ arg?0x101:0x100));
+ case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
+ sc->wlan_enable_if_radio_on = arg;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
+ sc->wlan_disable_if_radio_off = arg;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
+ return (acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1,
+ arg?0x202:0x200));
+ case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
+ sc->bluetooth_enable_if_radio_on = arg;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
+ sc->bluetooth_disable_if_radio_off = arg?1:0;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_WWAN_ENABLED:
+ return (acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_WIRELESS_COMMAND, 1,
+ arg?0x404:0x400));
+ case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
+ sc->wwan_enable_if_radio_on = arg?1:0;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
+ sc->wwan_disable_if_radio_off = arg?1:0;
+ acpi_hp_evaluate_auto_on_off(sc);
+ break;
+ case ACPI_HP_METHOD_ALS:
+ return (acpi_hp_exec_wmi_command(sc->wmi_dev,
+ ACPI_HP_WMI_ALS_COMMAND, 1,
+ arg?1:0));
+ case ACPI_HP_METHOD_CMI_DETAIL:
+ sc->cmi_detail = arg;
+ break;
+ }
+ }
+
+ return (0);
+}
+
+static __inline void
+acpi_hp_free_buffer(ACPI_BUFFER* buf) {
+ if (buf && buf->Pointer) {
+ AcpiOsFree(buf->Pointer);
+ }
+}
+
+static void
+acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context)
+{
+ device_t dev = context;
+ ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
+
+ struct acpi_hp_softc *sc = device_get_softc(dev);
+ ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL };
+ ACPI_OBJECT *obj;
+ ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response);
+ obj = (ACPI_OBJECT*) response.Pointer;
+ if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) {
+ if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) {
+ acpi_hp_evaluate_auto_on_off(sc);
+ }
+ }
+ acpi_hp_free_buffer(&response);
+}
+
+static int
+acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val)
+{
+ UINT32 params[5] = { 0x55434553,
+ is_write?2:1,
+ command,
+ is_write?4:0,
+ val};
+ UINT32* result;
+ ACPI_OBJECT *obj;
+ ACPI_BUFFER in = { sizeof(params), ¶ms };
+ ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
+ int retval;
+
+ if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID,
+ 0, 0x3, &in, &out))) {
+ acpi_hp_free_buffer(&out);
+ return (-EINVAL);
+ }
+ obj = out.Pointer;
+ if (!obj || obj->Type != ACPI_TYPE_BUFFER) {
+ acpi_hp_free_buffer(&out);
+ return (-EINVAL);
+ }
+ result = (UINT32*) obj->Buffer.Pointer;
+ retval = result[2];
+ if (result[1] > 0) {
+ retval = result[1];
+ }
+ acpi_hp_free_buffer(&out);
+
+ return (retval);
+}
+
+static __inline char*
+acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) {
+ int length;
+ dst[0] = 0;
+ if (obj->Type == ACPI_TYPE_STRING) {
+ length = obj->String.Length+1;
+ if (length > size) {
+ length = size - 1;
+ }
+ strlcpy(dst, obj->String.Pointer, length);
+ acpi_hp_hex_decode(dst);
+ }
+
+ return (dst);
+}
+
+
+/*
+ * Read BIOS Setting block in instance "instance".
+ * The block returned is ACPI_TYPE_PACKAGE which should contain the following
+ * elements:
+ * Index Meaning
+ * 0 Setting Name [string]
+ * 1 Value (comma separated, asterisk marks the current value) [string]
+ * 2 Path within the bios hierarchy [string]
+ * 3 IsReadOnly [int]
+ * 4 DisplayInUI [int]
+ * 5 RequiresPhysicalPresence [int]
+ * 6 Sequence for ordering within the bios settings (absolute) [int]
+ * 7 Length of prerequisites array [int]
+ * 8 Prerequisite1 [string]
+ * 9 Prerequisite2 [string]
+ * 10 Prerequisite3 [string]
+ * 11 Current value (in case of enum) [string] / Array length [int]
+ * 12 Enum length [int] / Array values
+ * 13ff Enum value at index x [string]
+ */
+static int
+acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance,
+ char* outbuf, size_t outsize, UINT32* sequence, int detail)
+{
+ ACPI_OBJECT *obj;
+ ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
+ int i;
+ int outlen;
+ int size = 255;
+ int has_enums = 0;
+ char string_buffer[size];
+ int enumbase;
+
+ outlen = 0;
+ outbuf[0] = 0;
+ if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) {
+ acpi_hp_free_buffer(&out);
+ return (-EINVAL);
+ }
+ obj = out.Pointer;
+ if (!obj && obj->Type != ACPI_TYPE_PACKAGE) {
+ acpi_hp_free_buffer(&out);
+ return (-EINVAL);
+ }
+
+ /* check if this matches our expectations based on limited knowledge */
+ if (obj->Package.Count >= 13 &&
+ obj->Package.Elements[0].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[1].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[2].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Elements[8].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[9].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[10].Type == ACPI_TYPE_STRING &&
+ ((obj->Package.Elements[11].Type == ACPI_TYPE_STRING &&
+ obj->Package.Elements[12].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Count >=
+ 13+obj->Package.Elements[12].Integer.Value) ||
+ (obj->Package.Elements[11].Type == ACPI_TYPE_INTEGER &&
+ obj->Package.Count >=
+ 12+obj->Package.Elements[11].Integer.Value))
+ ) {
+ enumbase = obj->Package.Elements[11].Type == ACPI_TYPE_STRING?
+ 12:11;
+ if (detail & ACPI_HP_CMI_DETAIL_PATHS) {
+ strlcat(outbuf, acpi_hp_get_string_from_object(
+ &obj->Package.Elements[2], string_buffer, size),
+ outsize);
+ outlen += 48;
+ while (strlen(outbuf) < outlen)
+ strlcat(outbuf, " ", outsize);
+ }
+ strlcat(outbuf, acpi_hp_get_string_from_object(
+ &obj->Package.Elements[0], string_buffer, size),
+ outsize);
+ outlen += 43;
+ while (strlen(outbuf) < outlen)
+ strlcat(outbuf, " ", outsize);
+ if (enumbase == 12)
+ strlcat(outbuf, acpi_hp_get_string_from_object(
+ &obj->Package.Elements[11],
+ string_buffer, size),
+ outsize);
+ outlen += 21;
+ while (strlen(outbuf) < outlen)
+ strlcat(outbuf, " ", outsize);
+ for (i = 0; i < strlen(outbuf); ++i)
+ if (outbuf[i] == '\\')
+ outbuf[i] = '/';
+ if (detail & ACPI_HP_CMI_DETAIL_ENUMS) {
+ for (i = enumbase+1; i < enumbase + 1 +
+ obj->Package.Elements[enumbase].Integer.Value;
+ ++i) {
+ acpi_hp_get_string_from_object(
+ &obj->Package.Elements[i], string_buffer,
+ size);
+ if (strlen(string_buffer) > 1 ||
+ (strlen(string_buffer) == 1 &&
+ string_buffer[0] != ' ')) {
+ if (has_enums)
+ strlcat(outbuf, "/", outsize);
+ else
+ strlcat(outbuf, " (", outsize);
+ strlcat(outbuf, string_buffer, outsize);
+ has_enums = 1;
+ }
+ }
+ }
+ if (has_enums)
+ strlcat(outbuf, ")", outsize);
+ if (detail & ACPI_HP_CMI_DETAIL_FLAGS) {
+ strlcat(outbuf, obj->Package.Elements[3].Integer.Value?
+ " [ReadOnly]":"", outsize);
+ strlcat(outbuf, obj->Package.Elements[4].Integer.Value?
+ "":" [NOUI]", outsize);
+ strlcat(outbuf, obj->Package.Elements[5].Integer.Value?
+ " [RPP]":"", outsize);
+ }
+ *sequence = (UINT32) obj->Package.Elements[6].Integer.Value;
+ }
+ acpi_hp_free_buffer(&out);
+
+ return (0);
+}
+
+
+
+/*
+ * Convert given two digit hex string (hexin) to an UINT8 referenced
+ * by byteout.
+ * Return != 0 if the was a problem (invalid input)
+ */
+static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
+{
+ unsigned int hi;
+ unsigned int lo;
+
+ hi = hexin[0];
+ lo = hexin[1];
+ if ('0' <= hi && hi <= '9')
+ hi -= '0';
+ else if ('A' <= hi && hi <= 'F')
+ hi -= ('A' - 10);
+ else if ('a' <= hi && hi <= 'f')
+ hi -= ('a' - 10);
+ else
+ return (1);
+ if ('0' <= lo && lo <= '9')
+ lo -= '0';
+ else if ('A' <= lo && lo <= 'F')
+ lo -= ('A' - 10);
+ else if ('a' <= lo && lo <= 'f')
+ lo -= ('a' - 10);
+ else
+ return (1);
+ *byteout = (hi << 4) + lo;
+
+ return (0);
+}
+
+
+static void
+acpi_hp_hex_decode(char* buffer)
+{
+ int i;
+ int length = strlen(buffer);
+ UINT8 *uin;
+ UINT8 uout;
+
+ if (((int)length/2)*2 == length || length < 10) return;
+
+ for (i = 0; i<length; ++i) {
+ if (!((i+1)%3)) {
+ if (buffer[i] != ' ')
+ return;
+ }
+ else
+ if (!((buffer[i] >= '0' && buffer[i] <= '9') ||
+ (buffer[i] >= 'A' && buffer[i] <= 'F')))
+ return;
+ }
+
+ for (i = 0; i<length; i += 3) {
+ uin = &buffer[i];
+ uout = 0;
+ acpi_hp_hex_to_int(uin, &uout);
+ buffer[i/3] = (char) uout;
+ }
+ buffer[(length+1)/3] = 0;
+}
+
+
+/*
+ * open hpcmi device
+ */
+static int
+acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td)
+{
+ struct acpi_hp_softc *sc;
+ int ret;
+
+ if (dev == NULL || dev->si_drv1 == NULL)
+ return (EBADF);
+ sc = dev->si_drv1;
+
+ ACPI_SERIAL_BEGIN(hp);
+ if (sc->hpcmi_open_pid != 0) {
+ ret = EBUSY;
+ }
+ else {
+ if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
+ == NULL) {
+ ret = ENXIO;
+ } else {
+ sc->hpcmi_open_pid = td->td_proc->p_pid;
+ sc->hpcmi_bufptr = 0;
+ ret = 0;
+ }
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (ret);
+}
+
+/*
+ * close hpcmi device
+ */
+static int
+acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td)
+{
+ struct acpi_hp_softc *sc;
+ int ret;
+
+ if (dev == NULL || dev->si_drv1 == NULL)
+ return (EBADF);
+ sc = dev->si_drv1;
+
+ ACPI_SERIAL_BEGIN(hp);
+ if (sc->hpcmi_open_pid == 0) {
+ ret = EBADF;
+ }
+ else {
+ if (sc->hpcmi_bufptr != -1) {
+ sbuf_delete(&sc->hpcmi_sbuf);
+ sc->hpcmi_bufptr = -1;
+ }
+ sc->hpcmi_open_pid = 0;
+ ret = 0;
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (ret);
+}
+
+/*
+ * Read from hpcmi bios information
+ */
+static int
+acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag)
+{
+ struct acpi_hp_softc *sc;
+ int pos, i, l, ret;
+ UINT8 instance;
+ UINT32 sequence;
+ int linesize = 1025;
+ char line[linesize];
+
+ if (dev == NULL || dev->si_drv1 == NULL)
+ return (EBADF);
+ sc = dev->si_drv1;
+
+ ACPI_SERIAL_BEGIN(hp);
+ if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid
+ || sc->hpcmi_bufptr == -1) {
+ ret = EBADF;
+ }
+ else {
+ if (!sbuf_done(&sc->hpcmi_sbuf)) {
+ if (sc->cmi_order_size < 0) {
+ sc->cmi_order_size = 0;
+ for (instance = 0; instance < 128;
+ ++instance) {
+ if (acpi_hp_get_cmi_block(sc->wmi_dev,
+ ACPI_HP_WMI_CMI_GUID, instance,
+ line, linesize, &sequence,
+ sc->cmi_detail)) {
+ instance = 128;
+ }
+ else {
+ pos = sc->cmi_order_size;
+ for (i=0;
+ i<sc->cmi_order_size && i<127;
+ ++i) {
+ if (sc->cmi_order[i].sequence > sequence) {
+ pos = i;
+ break;
+ }
+ }
+ for (i=sc->cmi_order_size;
+ i>pos;
+ --i) {
+ sc->cmi_order[i].sequence =
+ sc->cmi_order[i-1].sequence;
+ sc->cmi_order[i].instance =
+ sc->cmi_order[i-1].instance;
+ }
+ sc->cmi_order[pos].sequence =
+ sequence;
+ sc->cmi_order[pos].instance =
+ instance;
+ sc->cmi_order_size++;
+ }
+ }
+ }
+ for (i=0; i<sc->cmi_order_size; ++i) {
+ if (!acpi_hp_get_cmi_block(sc->wmi_dev,
+ ACPI_HP_WMI_CMI_GUID,
+ sc->cmi_order[i].instance, line, linesize,
+ &sequence, sc->cmi_detail)) {
+ sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line);
+ }
+ }
+ sbuf_finish(&sc->hpcmi_sbuf);
+ }
+ if (sbuf_len(&sc->hpcmi_sbuf) <= 0) {
+ sbuf_delete(&sc->hpcmi_sbuf);
+ sc->hpcmi_bufptr = -1;
+ sc->hpcmi_open_pid = 0;
+ ret = ENOMEM;
+ } else {
+ l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) -
+ sc->hpcmi_bufptr);
+ ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) +
+ sc->hpcmi_bufptr, l, buf) : 0;
+ sc->hpcmi_bufptr += l;
+ }
+ }
+ ACPI_SERIAL_END(hp);
+
+ return (ret);
+}
--- share/man/man4/man4.i386/acpi_wmi.4~ 2009-06-21 12:09:58.000000000 +0200
+++ share/man/man4/man4.i386/acpi_wmi.4 2009-06-21 12:10:57.178932778 +0200
@@ -0,0 +1,97 @@
+.\" Copyright (c) 2009 Michael Gmelin
+.\" 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd June 21, 2009
+.Dt ACPI_WMI 4 i386
+.Os
+.Sh NAME
+.Nm acpi_wmi
+.Nd "ACPI to WMI mapping driver"
+.Sh SYNOPSIS
+To compile this driver into the kernel,
+place the following line in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device acpi_wmi"
+.Ed
+.Pp
+Alternatively, to load the driver as a
+module at boot time, place the following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+acpi_wmi_load="YES"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+driver provides an interface for vendor specific WMI implementations
+(e.g. HP and Acer laptops). It creates /dev/wmistat, which can be read to get
+information about GUIDs found in the system.
+.Sh FILES
+.Bl -tag -width /dev/wmistat -compact
+.It Pa /dev/wmistat
+WMI status device.
+.El
+.Sh EXAMPLES
+.Bd Literal
+root# cat /dev/wmistat
+
+GUID INST EXPE METH STR EVENT OID
+{5FB7F034-2C63-45E9-BE91-3D44E2C707E4} 1 NO WMAA NO NO AA
+{95F24279-4D7B-4334-9387-ACCDC67EF61C} 1 NO NO NO 0x80+ -
+{2B814318-4BE8-4707-9D84-A190A859B5D0} 1 NO NO NO 0xA0 -
+{05901221-D566-11D1-B2F0-00A0C9062910} 1 NO NO NO NO AB
+{1F4C91EB-DC5C-460B-951D-C7CB9B4B8D5E} 1 NO WMBA NO NO BA
+{2D114B49-2DFB-4130-B8FE-4A3C09E75133} 57 NO NO NO NO BC
+{988D08E3-68F4-4C35-AF3E-6A1B8106F83C} 20 NO NO NO NO BD
+{14EA9746-CE1F-4098-A0E0-7045CB4DA745} 1 NO NO NO NO BE
+{322F2028-0F84-4901-988E-015176049E2D} 2 NO NO NO NO BF
+{8232DE3D-663D-4327-A8F4-E293ADB9BF05} 0 NO NO NO NO BG
+{8F1F6436-9F42-42C8-BADC-0E9424F20C9A} 0 NO NO NO NO BH
+{8F1F6435-9F42-42C8-BADC-0E9424F20C9A} 0 NO NO NO NO BI
+.Ed
+
+.Sh SEE ALSO
+.Xr acpi 4 ,
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx CURRENT .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+driver was written by
+.An Michael Gmelin Aq freebsd@grem.de
+.Pp
+Work has been inspired by the Linux acpi-wmi driver written by Carlos Corbacho
+.Pp
+See http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx for
+the specification of ACPI-WMI.
+.Pp
+This manual page was written by
+.An Michael Gmelin Aq freebsd@grem.de
--- sys/dev/acpi_support/acpi_wmi.c~ 2009-06-21 18:42:25.739784505 +0200
+++ sys/dev/acpi_support/acpi_wmi.c 2009-06-21 18:50:54.166723000 +0200
@@ -0,0 +1,1005 @@
+/*-
+ * Copyright (c) 2009 Michael Gmelin <freebsd@grem.de>
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Driver for acpi-wmi mapping, provides an interface for vendor specific
+ * implementations (e.g. HP and Acer laptops).
+ * Inspired by the ACPI-WMI mapping driver (c) 2008-2008 Carlos Corbacho which
+ * implements this functionality for Linux.
+ *
+ * WMI and ACPI: http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
+ * acpi-wmi for Linux: http://www.kernel.org
+ */
+
+#include "opt_acpi.h"
+#include <sys/param.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/proc.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/sbuf.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+
+#include <contrib/dev/acpica/acpi.h>
+#include <dev/acpica/acpivar.h>
+#include "acpi_wmi_if.h"
+
+MALLOC_DEFINE(M_ACPIWMI, "acpiwmi", "ACPI-WMI mapping");
+
+#define _COMPONENT ACPI_OEM
+ACPI_MODULE_NAME("ACPI_WMI");
+
+#define ACPI_WMI_REGFLAG_EXPENSIVE 0x1 /* GUID flag: Expensive operation */
+#define ACPI_WMI_REGFLAG_METHOD 0x2 /* GUID flag: Method call */
+#define ACPI_WMI_REGFLAG_STRING 0x4 /* GUID flag: String */
+#define ACPI_WMI_REGFLAG_EVENT 0x8 /* GUID flag: Event */
+
+/*
+ * acpi_wmi driver private structure
+ */
+struct acpi_wmi_softc {
+ device_t wmi_dev; /* wmi device id */
+ ACPI_HANDLE wmi_handle; /* handle of the PNP0C14 node */
+ device_t ec_dev; /* acpi_ec0 */
+ struct cdev *wmistat_dev_t; /* wmistat device handle */
+ struct sbuf wmistat_sbuf; /* sbuf for /dev/wmistat output */
+ pid_t wmistat_open_pid; /* pid operating on /dev/wmistat */
+ int wmistat_bufptr; /* /dev/wmistat ptr to buffer position */
+};
+
+/*
+ * Struct that holds information about
+ * about a single GUID entry in _WDG
+ */
+struct guid_info {
+ char guid[16]; /* 16 byte non human readable GUID */
+ char oid[2]; /* object id or event notify id (first byte) */
+ UINT8 max_instance; /* highest instance known for this GUID */
+ UINT8 flags; /* ACPI_WMI_REGFLAG_%s */
+};
+
+/* WExx event generation state (on/off) */
+enum event_generation_state {
+ EVENT_GENERATION_ON = 1,
+ EVENT_GENERATION_OFF = 0
+};
+
+
+/*
+ * Information about one entry in _WDG.
+ * List of those is used to lookup information by GUID.
+ */
+struct wmi_info {
+ TAILQ_ENTRY(wmi_info) wmi_list;
+ struct guid_info ginfo; /* information on guid */
+ ACPI_NOTIFY_HANDLER event_handler;/* client provided event handler */
+ void *event_handler_user_data; /* ev handler cookie */
+};
+
+TAILQ_HEAD(wmi_info_list_head, wmi_info)
+ wmi_info_list = TAILQ_HEAD_INITIALIZER(wmi_info_list);
+
+ACPI_SERIAL_DECL(acpi_wmi, "ACPI-WMI Mapping");
+
+/* public interface - declaration */
+/* standard device interface*/
+static int acpi_wmi_probe(device_t dev);
+static int acpi_wmi_attach(device_t dev);
+static int acpi_wmi_detach(device_t dev);
+/* see acpi_wmi_if.m */
+static int acpi_wmi_provides_guid_string_method(device_t dev,
+ const char *guid_string);
+static ACPI_STATUS acpi_wmi_evaluate_call_method(device_t dev,
+ const char *guid_string, UINT8 instance,
+ UINT32 method_id, const ACPI_BUFFER *in,
+ ACPI_BUFFER *out);
+static ACPI_STATUS acpi_wmi_install_event_handler_method(device_t dev,
+ const char *guid_string, ACPI_NOTIFY_HANDLER handler,
+ void *data);
+static ACPI_STATUS acpi_wmi_remove_event_handler_method(device_t dev,
+ const char *guid_string);
+static ACPI_STATUS acpi_wmi_get_event_data_method(device_t dev,
+ UINT32 event_id, ACPI_BUFFER *out);
+static ACPI_STATUS acpi_wmi_get_block_method(device_t dev,
+ const char *guid_string,
+ UINT8 instance, ACPI_BUFFER *out);
+static ACPI_STATUS acpi_wmi_set_block_method(device_t dev,
+ const char *guid_string,
+ UINT8 instance, const ACPI_BUFFER *in);
+/* private interface - declaration */
+/* callbacks */
+static void acpi_wmi_notify_handler(ACPI_HANDLE h, UINT32 notify,
+ void *context);
+static ACPI_STATUS acpi_wmi_ec_handler(UINT32 function,
+ ACPI_PHYSICAL_ADDRESS address, UINT32 width,
+ ACPI_INTEGER *value, void *context,
+ void *region_context);
+/* helpers */
+static ACPI_STATUS acpi_wmi_read_wdg_blocks(ACPI_HANDLE h);
+static ACPI_STATUS acpi_wmi_toggle_we_event_generation(device_t dev,
+ struct wmi_info *winfo,
+ enum event_generation_state state);
+static int acpi_wmi_guid_string_to_guid(const UINT8 *guid_string,
+ UINT8 *guid);
+static struct wmi_info* acpi_wmi_lookup_wmi_info_by_guid_string(
+ const char *guid_string);
+
+static d_open_t acpi_wmi_wmistat_open;
+static d_close_t acpi_wmi_wmistat_close;
+static d_read_t acpi_wmi_wmistat_read;
+
+/* handler /dev/wmistat device */
+static struct cdevsw wmistat_cdevsw = {
+ .d_version = D_VERSION,
+ .d_open = acpi_wmi_wmistat_open,
+ .d_close = acpi_wmi_wmistat_close,
+ .d_read = acpi_wmi_wmistat_read,
+ .d_name = "wmistat",
+};
+
+
+static device_method_t acpi_wmi_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, acpi_wmi_probe),
+ DEVMETHOD(device_attach, acpi_wmi_attach),
+ DEVMETHOD(device_detach, acpi_wmi_detach),
+
+ /* acpi_wmi interface */
+ DEVMETHOD(acpi_wmi_provides_guid_string,
+ acpi_wmi_provides_guid_string_method),
+ DEVMETHOD(acpi_wmi_evaluate_call, acpi_wmi_evaluate_call_method),
+ DEVMETHOD(acpi_wmi_install_event_handler,
+ acpi_wmi_install_event_handler_method),
+ DEVMETHOD(acpi_wmi_remove_event_handler,
+ acpi_wmi_remove_event_handler_method),
+ DEVMETHOD(acpi_wmi_get_event_data, acpi_wmi_get_event_data_method),
+ DEVMETHOD(acpi_wmi_get_block, acpi_wmi_get_block_method),
+ DEVMETHOD(acpi_wmi_set_block, acpi_wmi_set_block_method),
+
+ {0, 0}
+};
+
+static driver_t acpi_wmi_driver = {
+ "acpi_wmi",
+ acpi_wmi_methods,
+ sizeof(struct acpi_wmi_softc),
+};
+
+static devclass_t acpi_wmi_devclass;
+DRIVER_MODULE(acpi_wmi, acpi, acpi_wmi_driver, acpi_wmi_devclass, 0, 0);
+MODULE_VERSION(acpi_wmi, 1);
+MODULE_DEPEND(acpi_wmi, acpi, 1, 1, 1);
+static char *wmi_ids[] = {"PNP0C14", "PNP0c14", NULL};
+
+/*
+ * Probe for the PNP0C14 ACPI node
+ */
+static int
+acpi_wmi_probe(device_t dev)
+{
+ if (acpi_disabled("wmi") ||
+ ACPI_ID_PROBE(device_get_parent(dev), dev, wmi_ids) == NULL)
+ return (ENXIO);
+ device_set_desc(dev, "ACPI-WMI mapping");
+
+ return (0);
+}
+
+/*
+ * Attach the device by:
+ * - Looking for the first ACPI EC device
+ * - Install the notify handler
+ * - Install the EC address space handler
+ * - Look for the _WDG node and read GUID information blocks
+ */
+static int
+acpi_wmi_attach(device_t dev)
+{
+ struct acpi_wmi_softc *sc;
+ int ret;
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ sc = device_get_softc(dev);
+ ret = ENXIO;
+
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ sc->wmi_dev = dev;
+ sc->wmi_handle = acpi_get_handle(dev);
+ TAILQ_INIT(&wmi_info_list);
+ /* XXX Only works with one EC, but nearly all systems only have one. */
+ if ((sc->ec_dev = devclass_get_device(devclass_find("acpi_ec"), 0))
+ == NULL)
+ device_printf(dev, "cannot find EC device\n");
+ else if (ACPI_FAILURE((status = AcpiInstallNotifyHandler(sc->wmi_handle,
+ ACPI_DEVICE_NOTIFY, acpi_wmi_notify_handler, sc))))
+ device_printf(sc->wmi_dev, "couldn't install notify handler - %s\n",
+ AcpiFormatException(status));
+ else if (ACPI_FAILURE((status = AcpiInstallAddressSpaceHandler(
+ sc->wmi_handle, ACPI_ADR_SPACE_EC, acpi_wmi_ec_handler,
+ NULL, sc)))) {
+ device_printf(sc->wmi_dev, "couldn't install EC handler - %s\n",
+ AcpiFormatException(status));
+ AcpiRemoveNotifyHandler(sc->wmi_handle, ACPI_DEVICE_NOTIFY,
+ acpi_wmi_notify_handler);
+ } else if (ACPI_FAILURE((status = acpi_wmi_read_wdg_blocks(
+ sc->wmi_handle)))) {
+ device_printf(sc->wmi_dev, "couldn't parse _WDG - %s\n",
+ AcpiFormatException(status));
+ AcpiRemoveNotifyHandler(sc->wmi_handle, ACPI_DEVICE_NOTIFY,
+ acpi_wmi_notify_handler);
+ AcpiRemoveAddressSpaceHandler(sc->wmi_handle, ACPI_ADR_SPACE_EC,
+ acpi_wmi_ec_handler);
+ } else {
+ sc->wmistat_dev_t = make_dev(&wmistat_cdevsw, 0, UID_ROOT,
+ GID_WHEEL, 0644, "wmistat");
+ sc->wmistat_dev_t->si_drv1 = sc;
+ sc->wmistat_open_pid = 0;
+ sc->wmistat_bufptr = -1;
+ ret = 0;
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (ret);
+}
+
+/*
+ * Detach the driver by:
+ * - Removing notification handler
+ * - Removing address space handler
+ * - Turning off event generation for all WExx event activated by
+ * child drivers
+ */
+static int
+acpi_wmi_detach(device_t dev)
+{
+ struct wmi_info *winfo, *tmp;
+ struct acpi_wmi_softc *sc;
+ int ret;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ sc = device_get_softc(dev);
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+
+ if (sc->wmistat_open_pid != 0) {
+ ret = EBUSY;
+ } else {
+ AcpiRemoveNotifyHandler(sc->wmi_handle, ACPI_DEVICE_NOTIFY,
+ acpi_wmi_notify_handler);
+ AcpiRemoveAddressSpaceHandler(sc->wmi_handle,
+ ACPI_ADR_SPACE_EC, acpi_wmi_ec_handler);
+ TAILQ_FOREACH_SAFE(winfo, &wmi_info_list, wmi_list, tmp) {
+ if (winfo->event_handler)
+ acpi_wmi_toggle_we_event_generation(dev,
+ winfo, EVENT_GENERATION_OFF);
+ TAILQ_REMOVE(&wmi_info_list, winfo, wmi_list);
+ free(winfo, M_ACPIWMI);
+ }
+ if (sc->wmistat_bufptr != -1) {
+ sbuf_delete(&sc->wmistat_sbuf);
+ sc->wmistat_bufptr = -1;
+ }
+ sc->wmistat_open_pid = 0;
+ destroy_dev(sc->wmistat_dev_t);
+ ret = 0;
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (ret);
+}
+
+
+/*
+ * Check if the given GUID string (human readable format
+ * AABBCCDD-EEFF-GGHH-IIJJ-KKLLMMNNOOPP)
+ * exists within _WDG
+ */
+static int
+acpi_wmi_provides_guid_string_method(device_t dev, const char *guid_string)
+{
+ int ret;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ ret = (acpi_wmi_lookup_wmi_info_by_guid_string(guid_string) == NULL)?0:1;
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (ret);
+}
+
+/*
+ * Call a method "method_id" on the given GUID block
+ * write result into user provided output buffer
+ */
+static ACPI_STATUS
+acpi_wmi_evaluate_call_method(device_t dev, const char *guid_string,
+ UINT8 instance, UINT32 method_id, const ACPI_BUFFER *in, ACPI_BUFFER *out)
+{
+ ACPI_OBJECT params[3];
+ ACPI_OBJECT_LIST input;
+ char method[5] = "WMxx";
+ struct wmi_info *winfo;
+ struct acpi_wmi_softc *sc;
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = device_get_softc(dev);
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
+ == NULL)
+ status = AE_NOT_FOUND;
+ else if (!(winfo->ginfo.flags & ACPI_WMI_REGFLAG_METHOD))
+ status = AE_BAD_DATA;
+ else if (instance > winfo->ginfo.max_instance)
+ status = AE_BAD_PARAMETER;
+ else {
+ params[0].Type = ACPI_TYPE_INTEGER;
+ params[0].Integer.Value = instance;
+ params[1].Type = ACPI_TYPE_INTEGER;
+ params[1].Integer.Value = method_id;
+ input.Pointer = params;
+ input.Count = 2;
+ if (in) {
+ params[2].Type =
+ (winfo->ginfo.flags & ACPI_WMI_REGFLAG_STRING)
+ ?ACPI_TYPE_STRING:ACPI_TYPE_BUFFER;
+ params[2].Buffer.Length = in->Length;
+ params[2].Buffer.Pointer = in->Pointer;
+ input.Count = 3;
+ }
+ method[2] = winfo->ginfo.oid[0];
+ method[3] = winfo->ginfo.oid[1];
+ status = AcpiEvaluateObject(sc->wmi_handle, method,
+ &input, out);
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (status);
+}
+
+/*
+ * Install a user provided event_handler on the given GUID
+ * provided *data will be passed on callback
+ * If there is already an existing event handler registered it will be silently
+ * discarded
+ */
+static ACPI_STATUS
+acpi_wmi_install_event_handler_method(device_t dev, const char *guid_string,
+ ACPI_NOTIFY_HANDLER event_handler, void *data)
+{
+ struct wmi_info *winfo;
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ status = AE_OK;
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ if (guid_string == NULL || event_handler == NULL)
+ status = AE_BAD_PARAMETER;
+ else if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
+ == NULL)
+ status = AE_NOT_EXIST;
+ else if (winfo->event_handler != NULL ||
+ (status = acpi_wmi_toggle_we_event_generation(dev, winfo,
+ EVENT_GENERATION_ON)) == AE_OK) {
+ winfo->event_handler = event_handler;
+ winfo->event_handler_user_data = data;
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (status);
+}
+
+/*
+ * Remove a previously installed event handler from the given GUID
+ * If there was none installed, this call is silently discarded and
+ * reported as AE_OK
+ */
+static ACPI_STATUS
+acpi_wmi_remove_event_handler_method(device_t dev, const char *guid_string)
+{
+ struct wmi_info *winfo;
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ status = AE_OK;
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ if (guid_string &&
+ (winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
+ != NULL && winfo->event_handler) {
+ status = acpi_wmi_toggle_we_event_generation(dev, winfo,
+ EVENT_GENERATION_OFF);
+ winfo->event_handler = NULL;
+ winfo->event_handler_user_data = NULL;
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (status);
+}
+
+/*
+ * Get details on an event received through a callback registered
+ * through ACPI_WMI_REMOVE_EVENT_HANDLER into a user provided output buffer.
+ * (event_id equals "notify" passed in the callback)
+ */
+static ACPI_STATUS
+acpi_wmi_get_event_data_method(device_t dev, UINT32 event_id, ACPI_BUFFER *out)
+{
+ ACPI_OBJECT_LIST input;
+ ACPI_OBJECT params[1];
+ struct acpi_wmi_softc *sc;
+ struct wmi_info *winfo;
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = device_get_softc(dev);
+ status = AE_NOT_FOUND;
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ params[0].Type = ACPI_TYPE_INTEGER;
+ params[0].Integer.Value = event_id;
+ input.Pointer = params;
+ input.Count = 1;
+ TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
+ if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) &&
+ ((UINT8) winfo->ginfo.oid[0] == event_id)) {
+ status = AcpiEvaluateObject(sc->wmi_handle, "_WED",
+ &input, out);
+ break;
+ }
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (status);
+}
+
+/*
+ * Read a block of data from the given GUID (using WQxx (query))
+ * Will be returned in a user provided buffer (out).
+ * If the method is marked as expensive (ACPI_WMI_REGFLAG_EXPENSIVE)
+ * we will first call the WCxx control method to lock the node to
+ * lock the node for data collection and release it afterwards.
+ * (Failed WCxx calls are ignored to "support" broken implementations)
+ */
+static ACPI_STATUS
+acpi_wmi_get_block_method(device_t dev, const char *guid_string, UINT8 instance,
+ ACPI_BUFFER *out)
+{
+ char wc_method[5] = "WCxx";
+ char wq_method[5] = "WQxx";
+ ACPI_OBJECT_LIST wc_input;
+ ACPI_OBJECT_LIST wq_input;
+ ACPI_OBJECT wc_params[1];
+ ACPI_OBJECT wq_params[1];
+ ACPI_HANDLE wc_handle;
+ struct acpi_wmi_softc *sc;
+ struct wmi_info *winfo;
+ ACPI_STATUS status;
+ ACPI_STATUS wc_status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = device_get_softc(dev);
+ wc_status = AE_ERROR;
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ if (guid_string == NULL || out == NULL)
+ status = AE_BAD_PARAMETER;
+ else if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
+ == NULL)
+ status = AE_ERROR;
+ else if (instance > winfo->ginfo.max_instance)
+ status = AE_BAD_PARAMETER;
+ else if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) ||
+ (winfo->ginfo.flags & ACPI_WMI_REGFLAG_METHOD))
+ status = AE_ERROR;
+ else {
+ wq_params[0].Type = ACPI_TYPE_INTEGER;
+ wq_params[0].Integer.Value = instance;
+ wq_input.Pointer = wq_params;
+ wq_input.Count = 1;
+ if (winfo->ginfo.flags & ACPI_WMI_REGFLAG_EXPENSIVE) {
+ wc_params[0].Type = ACPI_TYPE_INTEGER;
+ wc_params[0].Integer.Value = 1;
+ wc_input.Pointer = wc_params;
+ wc_input.Count = 1;
+ wc_method[2] = winfo->ginfo.oid[0];
+ wc_method[3] = winfo->ginfo.oid[1];
+ wc_status = AcpiGetHandle(sc->wmi_handle, wc_method,
+ &wc_handle);
+ if (ACPI_SUCCESS(wc_status))
+ wc_status = AcpiEvaluateObject(wc_handle,
+ wc_method, &wc_input, NULL);
+ }
+ wq_method[2] = winfo->ginfo.oid[0];
+ wq_method[3] = winfo->ginfo.oid[1];
+ status = AcpiEvaluateObject(sc->wmi_handle, wq_method,
+ &wq_input, out);
+ if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EXPENSIVE)
+ && ACPI_SUCCESS(wc_status)) {
+ wc_params[0].Integer.Value = 0;
+ status = AcpiEvaluateObject(wc_handle, wc_method,
+ &wc_input, NULL); /* XXX this might be
+ the wrong status to
+ return? */
+ }
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (status);
+}
+
+/*
+ * Write a block of data to the given GUID (using WSxx)
+ */
+static ACPI_STATUS
+acpi_wmi_set_block_method(device_t dev, const char *guid_string, UINT8 instance,
+ const ACPI_BUFFER *in)
+{
+ char method[5] = "WSxx";
+ ACPI_OBJECT_LIST input;
+ ACPI_OBJECT params[2];
+ struct wmi_info *winfo;
+ struct acpi_wmi_softc *sc;
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = device_get_softc(dev);
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ if (guid_string == NULL || in == NULL)
+ status = AE_BAD_DATA;
+ else if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
+ == NULL)
+ status = AE_ERROR;
+ else if (instance > winfo->ginfo.max_instance)
+ status = AE_BAD_PARAMETER;
+ else if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) ||
+ (winfo->ginfo.flags & ACPI_WMI_REGFLAG_METHOD))
+ status = AE_ERROR;
+ else {
+ params[0].Type = ACPI_TYPE_INTEGER;
+ params[0].Integer.Value = instance;
+ input.Pointer = params;
+ input.Count = 2;
+ params[1].Type = (winfo->ginfo.flags & ACPI_WMI_REGFLAG_STRING)
+ ?ACPI_TYPE_STRING:ACPI_TYPE_BUFFER;
+ params[1].Buffer.Length = in->Length;
+ params[1].Buffer.Pointer = in->Pointer;
+ method[2] = winfo->ginfo.oid[0];
+ method[3] = winfo->ginfo.oid[1];
+ status = AcpiEvaluateObject(sc->wmi_handle, method,
+ &input, NULL);
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (status);
+}
+
+/*
+ * Handle events received and dispatch them to
+ * stakeholders that registered through ACPI_WMI_INSTALL_EVENT_HANDLER
+ */
+static void
+acpi_wmi_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
+{
+ ACPI_NOTIFY_HANDLER handler;
+ void *handler_data;
+ struct wmi_info *winfo;
+
+ ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
+
+ handler = NULL;
+ handler_data = NULL;
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
+ if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) &&
+ ((UINT8) winfo->ginfo.oid[0] == notify)) {
+ if (winfo->event_handler) {
+ handler = winfo->event_handler;
+ handler_data = winfo->event_handler_user_data;
+ break;
+ }
+ }
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+ if (handler) {
+ handler(h, notify, handler_data);
+ }
+}
+
+/*
+ * Handle EC address space notifications reveived on the WDG node
+ * (this mimics EcAddressSpaceHandler in acpi_ec.c)
+ */
+static ACPI_STATUS
+acpi_wmi_ec_handler(UINT32 function, ACPI_PHYSICAL_ADDRESS address,
+ UINT32 width, ACPI_INTEGER *value, void *context,
+ void *region_context)
+{
+ struct acpi_wmi_softc *sc;
+ int i;
+ ACPI_INTEGER ec_data;
+ UINT8 ec_addr;
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, (UINT32)Address);
+
+ sc = (struct acpi_wmi_softc *)context;
+ if (width % 8 != 0 || value == NULL || context == NULL)
+ return (AE_BAD_PARAMETER);
+ if (address + (width / 8) - 1 > 0xFF)
+ return (AE_BAD_ADDRESS);
+ if (function == ACPI_READ)
+ *value = 0;
+ ec_addr = address;
+ status = AE_ERROR;
+
+ for (i = 0; i < width; i += 8, ++ec_addr) {
+ switch (function) {
+ case ACPI_READ:
+ status = ACPI_EC_READ(sc->ec_dev, ec_addr, &ec_data, 1);
+ if (ACPI_SUCCESS(status))
+ *value |= ((ACPI_INTEGER)ec_data) << i;
+ break;
+ case ACPI_WRITE:
+ ec_data = (UINT8)((*value) >> i);
+ status = ACPI_EC_WRITE(sc->ec_dev, ec_addr, ec_data, 1);
+ break;
+ default:
+ device_printf(sc->wmi_dev,
+ "invalid acpi_wmi_ec_handler function %d\n",
+ function);
+ status = AE_BAD_PARAMETER;
+ break;
+ }
+ if (ACPI_FAILURE(status))
+ break;
+ }
+
+ return (status);
+}
+
+/*
+ * Read GUID blocks from the _WDG node
+ * into wmi_info_list.
+ */
+static ACPI_STATUS
+acpi_wmi_read_wdg_blocks(ACPI_HANDLE h)
+{
+ ACPI_BUFFER out = {ACPI_ALLOCATE_BUFFER, NULL};
+ struct guid_info *ginfo;
+ ACPI_OBJECT *obj;
+ struct wmi_info *winfo;
+ UINT32 i;
+ UINT32 wdg_block_count;
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ ACPI_SERIAL_ASSERT(acpi_wmi);
+ if (ACPI_FAILURE(status = AcpiEvaluateObject(h, "_WDG", NULL, &out)))
+ return (status);
+ obj = (ACPI_OBJECT*) out.Pointer;
+ wdg_block_count = obj->Buffer.Length / sizeof(struct guid_info);
+ if ((ginfo = malloc(obj->Buffer.Length, M_ACPIWMI, M_NOWAIT))
+ == NULL) {
+ AcpiOsFree(out.Pointer);
+ return (AE_NO_MEMORY);
+ }
+ memcpy(ginfo, obj->Buffer.Pointer, obj->Buffer.Length);
+ for (i = 0; i < wdg_block_count; ++i) {
+ if ((winfo = malloc(sizeof(struct wmi_info), M_ACPIWMI,
+ M_NOWAIT | M_ZERO)) == NULL) {
+ AcpiOsFree(out.Pointer);
+ free(ginfo, M_ACPIWMI);
+ return (AE_NO_MEMORY);
+ }
+ winfo->ginfo = ginfo[i];
+ TAILQ_INSERT_TAIL(&wmi_info_list, winfo, wmi_list);
+ }
+ AcpiOsFree(out.Pointer);
+ free(ginfo, M_ACPIWMI);
+
+ return (status);
+}
+
+/*
+ * Toggle event generation in for the given GUID (passed by winfo)
+ * Turn on to get notified (through acpi_wmi_notify_handler) if events happen
+ * on the given GUID.
+ */
+static ACPI_STATUS
+acpi_wmi_toggle_we_event_generation(device_t dev, struct wmi_info *winfo,
+ enum event_generation_state state)
+{
+ char method[5] = "WExx";
+ ACPI_OBJECT_LIST input;
+ ACPI_OBJECT params[1];
+ struct acpi_wmi_softc *sc;
+ ACPI_STATUS status;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = device_get_softc(dev);
+ ACPI_SERIAL_ASSERT(acpi_wmi);
+ params[0].Type = ACPI_TYPE_INTEGER;
+ params[0].Integer.Value = state==EVENT_GENERATION_ON?1:0;
+ input.Pointer = params;
+ input.Count = 1;
+
+ UINT8 hi = ((UINT8) winfo->ginfo.oid[0]) >> 4;
+ UINT8 lo = ((UINT8) winfo->ginfo.oid[0]) & 0xf;
+ method[2] = (hi > 9 ? hi + 55: hi + 48);
+ method[3] = (lo > 9 ? lo + 55: lo + 48);
+ status = AcpiEvaluateObject(sc->wmi_handle, method, &input, NULL);
+ if (status == AE_NOT_FOUND) status = AE_OK;
+
+ return (status);
+}
+
+/*
+ * Convert given two digit hex string (hexin) to an UINT8 referenced
+ * by byteout.
+ * Return != 0 if the was a problem (invalid input)
+ */
+static __inline int acpi_wmi_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
+{
+ unsigned int hi;
+ unsigned int lo;
+
+ hi = hexin[0];
+ lo = hexin[1];
+ if ('0' <= hi && hi <= '9')
+ hi -= '0';
+ else if ('A' <= hi && hi <= 'F')
+ hi -= ('A' - 10);
+ else if ('a' <= hi && hi <= 'f')
+ hi -= ('a' - 10);
+ else
+ return (1);
+ if ('0' <= lo && lo <= '9')
+ lo -= '0';
+ else if ('A' <= lo && lo <= 'F')
+ lo -= ('A' - 10);
+ else if ('a' <= lo && lo <= 'f')
+ lo -= ('a' - 10);
+ else
+ return (1);
+ *byteout = (hi << 4) + lo;
+
+ return (0);
+}
+
+/*
+ * Convert a human readable 36 character GUID into a 16byte
+ * machine readable one.
+ * The basic algorithm looks as follows:
+ * Input: AABBCCDD-EEFF-GGHH-IIJJ-KKLLMMNNOOPP
+ * Output: DCBAFEHGIJKLMNOP
+ * (AA BB CC etc. represent two digit hex numbers == bytes)
+ * Return != 0 if passed guid string is invalid
+ */
+static int
+acpi_wmi_guid_string_to_guid(const UINT8 *guid_string, UINT8 *guid)
+{
+ static const int mapping[20] = {3, 2, 1, 0, -1, 5, 4, -1, 7, 6, -1,
+ 8, 9, -1, 10, 11, 12, 13, 14, 15};
+ int i;
+
+ for (i = 0; i < 20; ++i, ++guid_string) {
+ if (mapping[i] >= 0) {
+ if (acpi_wmi_hex_to_int(guid_string,
+ &guid[mapping[i]]))
+ return (-1);
+ ++guid_string;
+ } else if (*guid_string != '-')
+ return (-1);
+ }
+
+ return (0);
+}
+
+/*
+ * Lookup a wmi_info structure in wmi_list based on a
+ * human readable GUID
+ * Return NULL if the GUID is unknown in the _WDG
+ */
+static struct wmi_info*
+acpi_wmi_lookup_wmi_info_by_guid_string(const char *guid_string)
+{
+ char guid[16];
+ struct wmi_info *winfo;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ ACPI_SERIAL_ASSERT(acpi_wmi);
+
+ if (!acpi_wmi_guid_string_to_guid(guid_string, guid)) {
+ TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
+ if (!memcmp(winfo->ginfo.guid, guid, 16)) {
+ return (winfo);
+ }
+ }
+ }
+
+ return (NULL);
+}
+
+/*
+ * open wmistat device
+ */
+static int
+acpi_wmi_wmistat_open(struct cdev* dev, int flags, int mode, struct thread *td)
+{
+ struct acpi_wmi_softc *sc;
+ int ret;
+
+ if (dev == NULL || dev->si_drv1 == NULL)
+ return (EBADF);
+ sc = dev->si_drv1;
+
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ if (sc->wmistat_open_pid != 0) {
+ ret = EBUSY;
+ }
+ else {
+ if (sbuf_new(&sc->wmistat_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
+ == NULL) {
+ ret = ENXIO;
+ } else {
+ sc->wmistat_open_pid = td->td_proc->p_pid;
+ sc->wmistat_bufptr = 0;
+ ret = 0;
+ }
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (ret);
+}
+
+/*
+ * close wmistat device
+ */
+static int
+acpi_wmi_wmistat_close(struct cdev* dev, int flags, int mode,
+ struct thread *td)
+{
+ struct acpi_wmi_softc *sc;
+ int ret;
+
+ if (dev == NULL || dev->si_drv1 == NULL)
+ return (EBADF);
+ sc = dev->si_drv1;
+
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ if (sc->wmistat_open_pid == 0) {
+ ret = EBADF;
+ }
+ else {
+ if (sc->wmistat_bufptr != -1) {
+ sbuf_delete(&sc->wmistat_sbuf);
+ sc->wmistat_bufptr = -1;
+ }
+ sc->wmistat_open_pid = 0;
+ ret = 0;
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (ret);
+}
+
+/*
+ * Read from wmistat guid information
+ */
+static int
+acpi_wmi_wmistat_read(struct cdev *dev, struct uio *buf, int flag)
+{
+ struct acpi_wmi_softc *sc;
+ struct wmi_info *winfo;
+ int l;
+ int ret;
+ UINT8* guid;
+
+ if (dev == NULL || dev->si_drv1 == NULL)
+ return (EBADF);
+ sc = dev->si_drv1;
+
+ ACPI_SERIAL_BEGIN(acpi_wmi);
+ if (sc->wmistat_open_pid != buf->uio_td->td_proc->p_pid ||
+ sc->wmistat_bufptr == -1) {
+ ret = EBADF;
+ }
+ else {
+ if (!sbuf_done(&sc->wmistat_sbuf)) {
+ sbuf_printf(&sc->wmistat_sbuf, "GUID "
+ " INST EXPE METH STR "
+ "EVENT OID\n");
+ TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
+ guid = (UINT8*)winfo->ginfo.guid;
+ sbuf_printf(&sc->wmistat_sbuf,
+ "{%02X%02X%02X%02X-%02X%02X-"
+ "%02X%02X-%02X%02X-%02X%02X"
+ "%02X%02X%02X%02X} %3d %-5s",
+ guid[3], guid[2], guid[1], guid[0],
+ guid[5], guid[4],
+ guid[7], guid[6],
+ guid[8], guid[9],
+ guid[10], guid[11], guid[12],
+ guid[13], guid[14], guid[15],
+ winfo->ginfo.max_instance,
+ (winfo->ginfo.flags&
+ ACPI_WMI_REGFLAG_EXPENSIVE)?
+ "YES":"NO"
+ );
+ if (winfo->ginfo.flags&ACPI_WMI_REGFLAG_METHOD)
+ sbuf_printf(&sc->wmistat_sbuf,
+ "WM%c%c ",
+ winfo->ginfo.oid[0],
+ winfo->ginfo.oid[1]);
+ else
+ sbuf_printf(&sc->wmistat_sbuf, "NO ");
+ sbuf_printf(&sc->wmistat_sbuf, "%-4s",
+ (winfo->ginfo.flags&
+ ACPI_WMI_REGFLAG_STRING)?"YES":"NO"
+ );
+ if (winfo->ginfo.flags&ACPI_WMI_REGFLAG_EVENT)
+ sbuf_printf(&sc->wmistat_sbuf,
+ "0x%02X%s -\n",
+ (UINT8)winfo->ginfo.oid[0],
+ winfo->event_handler==NULL?
+ " ":"+");
+ else
+ sbuf_printf(&sc->wmistat_sbuf,
+ "NO %c%c\n",
+ winfo->ginfo.oid[0],
+ winfo->ginfo.oid[1]);
+ }
+ sbuf_finish(&sc->wmistat_sbuf);
+ }
+ if (sbuf_len(&sc->wmistat_sbuf) <= 0) {
+ sbuf_delete(&sc->wmistat_sbuf);
+ sc->wmistat_bufptr = -1;
+ sc->wmistat_open_pid = 0;
+ ret = ENOMEM;
+ } else {
+ l = min(buf->uio_resid, sbuf_len(&sc->wmistat_sbuf) -
+ sc->wmistat_bufptr);
+ ret = (l > 0)?uiomove(sbuf_data(&sc->wmistat_sbuf) +
+ sc->wmistat_bufptr, l, buf) : 0;
+ sc->wmistat_bufptr += l;
+ }
+ }
+ ACPI_SERIAL_END(acpi_wmi);
+
+ return (ret);
+}
--- sys/dev/acpi_support/acpi_wmi_if.m~ 2009-06-21 12:09:58.000000000 +0200
+++ sys/dev/acpi_support/acpi_wmi_if.m 2009-06-21 12:13:23.546375847 +0200
@@ -0,0 +1,144 @@
+#-
+# Copyright (c) 2009 Michael Gmelin
+# 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: src/sys/dev/acpic_support/acpi_wmi_if.m,v 1.0 2008/11/23 16:33:00 rmg Exp $
+#
+
+#include <sys/bus.h>
+#include <sys/types.h>
+#include <contrib/dev/acpica/acpi.h>
+
+INTERFACE acpi_wmi;
+
+#
+# Default implementation for acpi_wmi_generic_provides_guid_string().
+#
+CODE {
+ static int
+ acpi_wmi_generic_provides_guid_string(device_t dev, const char* guid_string)
+ {
+ return 0;
+ }
+};
+
+
+#
+# Check if given GUID exists in WMI
+#
+# device_t dev: Device to probe
+# const char* guid_string: String form of the GUID
+#
+METHOD int provides_guid_string {
+ device_t dev;
+ const char* guid_string;
+} DEFAULT acpi_wmi_generic_provides_guid_string;
+
+#
+# Evaluate a WMI method call
+#
+# device_t dev: Device to use
+# const char* guid_string: String form of the GUID
+# UINT8 instance: instance id
+# UINT32 method_id: method to call
+# const ACPI_BUFFER* in: input data
+# ACPI_BUFFER* out: output buffer
+#
+METHOD ACPI_STATUS evaluate_call {
+ device_t dev;
+ const char *guid_string;
+ UINT8 instance;
+ UINT32 method_id;
+ const ACPI_BUFFER *in;
+ ACPI_BUFFER *out;
+};
+
+#
+# Get content of a WMI block
+#
+# device_t dev: Device to use
+# const char* guid_string: String form of the GUID
+# UINT8 instance: instance id
+# ACPI_BUFFER* out: output buffer
+#
+METHOD ACPI_STATUS get_block {
+ device_t dev;
+ const char *guid_string;
+ UINT8 instance;
+ ACPI_BUFFER *out;
+};
+#
+# Write to a WMI data block
+#
+# device_t dev: Device to use
+# const char* guid_string: String form of the GUID
+# UINT8 instance: instance id
+# const ACPI_BUFFER* in: input data
+#
+METHOD ACPI_STATUS set_block {
+ device_t dev;
+ const char *guid_string;
+ UINT8 instance;
+ const ACPI_BUFFER *in;
+};
+
+#
+# Install wmi event handler
+#
+# device_t dev: Device to use
+# const char* guid_string: String form of the GUID
+# ACPI_NOTIFY_HANDLER handler: Handler
+# void* data: Payload
+#
+METHOD ACPI_STATUS install_event_handler {
+ device_t dev;
+ const char *guid_string;
+ ACPI_NOTIFY_HANDLER handler;
+ void *data;
+};
+
+#
+# Remove wmi event handler
+#
+# device_t dev: Device to use
+# const char* guid_string: String form of the GUID
+#
+METHOD ACPI_STATUS remove_event_handler {
+ device_t dev;
+ const char *guid_string;
+};
+
+
+#
+# Get event data associated to an event
+#
+# device_t dev: Device to use
+# UINT32 event_id: event id
+# ACPI_BUFFER* out: output buffer
+#
+METHOD ACPI_STATUS get_event_data {
+ device_t dev;
+ UINT32 event_id;
+ ACPI_BUFFER *out;
+};
--- sys/modules/acpi/acpi_hp/Makefile~ 2009-06-21 12:09:58.000000000 +0200
+++ sys/modules/acpi/acpi_hp/Makefile 2009-06-21 12:10:33.000000000 +0100
@@ -0,0 +1,9 @@
+# $FreeBSD: src/sys/modules/acpi/acpi_hp/Makefile,v 1.3 2004/12/13 04:59:35 imp Exp $
+
+.PATH: ${.CURDIR}/../../../dev/acpi_support
+KMOD= acpi_hp
+CFLAGS+= -I${.CURDIR}/../../../contrib/dev/acpica
+SRCS= acpi_hp.c opt_acpi.h device_if.h bus_if.h acpi_if.h acpi_wmi_if.h
+SRCS+= opt_ddb.h
+
+.include <bsd.kmod.mk>
--- sys/modules/acpi/acpi_wmi/Makefile~ 2009-06-21 12:09:58.000000000 +0200
+++ sys/modules/acpi/acpi_wmi/Makefile 2009-06-21 12:10:39.000000000 +0100
@@ -0,0 +1,10 @@
+# $FreeBSD: src/sys/modules/acpi/acpi_wmi/Makefile,v 1.7 2007/06/24 20:36:51 njl Exp $
+
+.PATH: ${.CURDIR}/../../../dev/acpi_support
+
+KMOD= acpi_wmi
+CFLAGS+= -I${.CURDIR}/../../../contrib/dev/acpica
+SRCS= acpi_wmi.c
+SRCS+= opt_acpi.h acpi_if.h bus_if.h device_if.h acpi_wmi_if.h
+
+.include <bsd.kmod.mk>
--- sys/conf/files.i386~ 2008-12-29 04:46:14.000000000 +0100
+++ sys/conf/files.i386 2009-06-21 12:10:14.000000000 +0100
@@ -226,6 +226,7 @@
dev/syscons/scvtb.c optional sc
dev/uart/uart_cpu_i386.c optional uart
dev/acpica/acpi_if.m standard
+dev/acpi_support/acpi_wmi_if.m standard
dev/wpi/if_wpi.c optional wpi
i386/acpica/OsdEnvironment.c optional acpi
i386/acpica/acpi_machdep.c optional acpi
--- sys/conf/files~ 2008-12-29 04:45:44.000000000 +0100
+++ sys/conf/files 2009-06-21 12:10:44.000000000 +0100
@@ -375,9 +375,11 @@
dev/aac/aac_disk.c optional aac
dev/aac/aac_linux.c optional aac compat_linux
dev/aac/aac_pci.c optional aac pci
+dev/acpi_support/acpi_wmi.c optional acpi_wmi acpi
dev/acpi_support/acpi_aiboost.c optional acpi_aiboost acpi
dev/acpi_support/acpi_asus.c optional acpi_asus acpi
dev/acpi_support/acpi_fujitsu.c optional acpi_fujitsu acpi
+dev/acpi_support/acpi_hp.c optional acpi_hp acpi
dev/acpi_support/acpi_ibm.c optional acpi_ibm acpi
dev/acpi_support/acpi_panasonic.c optional acpi_panasonic acpi
dev/acpi_support/acpi_sony.c optional acpi_sony acpi
--- sys/conf/kmod.mk~ 2008-12-29 04:44:41.000000000 +0100
+++ sys/conf/kmod.mk 2009-06-21 12:10:41.000000000 +0100
@@ -321,7 +321,7 @@
.endfor
.endif
-MFILES?= dev/acpica/acpi_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \
+MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \
dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \
dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \
dev/mii/miibus_if.m dev/ofw/ofw_bus_if.m \
--- share/man/man4/man4.i386/Makefile~ 2009-06-21 12:36:50.000000000 +0200
+++ share/man/man4/man4.i386/Makefile 2009-06-21 12:36:50.000000000 +0200
@@ -3,10 +3,12 @@
MAN= acpi_aiboost.4 \
acpi_asus.4 \
acpi_fujitsu.4 \
+ acpi_hp.4 \
acpi_ibm.4 \
acpi_panasonic.4 \
acpi_sony.4 \
acpi_toshiba.4 \
+ acpi_wmi.4 \
aic.4 \
alpm.4 \
amdpm.4 \
--------------000302080806090206000000
Content-Type: text/plain;
name="acpi_wmi.c"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
filename="acpi_wmi.c"
/*-
* Copyright (c) 2009 Michael Gmelin <freebsd@grem.de>
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Driver for acpi-wmi mapping, provides an interface for vendor specific
* implementations (e.g. HP and Acer laptops).
* Inspired by the ACPI-WMI mapping driver (c) 2008-2008 Carlos Corbacho which
* implements this functionality for Linux.
*
* WMI and ACPI: http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
* acpi-wmi for Linux: http://www.kernel.org
*/
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/sbuf.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <contrib/dev/acpica/acpi.h>
#include <dev/acpica/acpivar.h>
#include "acpi_wmi_if.h"
MALLOC_DEFINE(M_ACPIWMI, "acpiwmi", "ACPI-WMI mapping");
#define _COMPONENT ACPI_OEM
ACPI_MODULE_NAME("ACPI_WMI");
#define ACPI_WMI_REGFLAG_EXPENSIVE 0x1 /* GUID flag: Expensive operation */
#define ACPI_WMI_REGFLAG_METHOD 0x2 /* GUID flag: Method call */
#define ACPI_WMI_REGFLAG_STRING 0x4 /* GUID flag: String */
#define ACPI_WMI_REGFLAG_EVENT 0x8 /* GUID flag: Event */
/*
* acpi_wmi driver private structure
*/
struct acpi_wmi_softc {
device_t wmi_dev; /* wmi device id */
ACPI_HANDLE wmi_handle; /* handle of the PNP0C14 node */
device_t ec_dev; /* acpi_ec0 */
struct cdev *wmistat_dev_t; /* wmistat device handle */
struct sbuf wmistat_sbuf; /* sbuf for /dev/wmistat output */
pid_t wmistat_open_pid; /* pid operating on /dev/wmistat */
int wmistat_bufptr; /* /dev/wmistat ptr to buffer position */
};
/*
* Struct that holds information about
* about a single GUID entry in _WDG
*/
struct guid_info {
char guid[16]; /* 16 byte non human readable GUID */
char oid[2]; /* object id or event notify id (first byte) */
UINT8 max_instance; /* highest instance known for this GUID */
UINT8 flags; /* ACPI_WMI_REGFLAG_%s */
};
/* WExx event generation state (on/off) */
enum event_generation_state {
EVENT_GENERATION_ON = 1,
EVENT_GENERATION_OFF = 0
};
/*
* Information about one entry in _WDG.
* List of those is used to lookup information by GUID.
*/
struct wmi_info {
TAILQ_ENTRY(wmi_info) wmi_list;
struct guid_info ginfo; /* information on guid */
ACPI_NOTIFY_HANDLER event_handler;/* client provided event handler */
void *event_handler_user_data; /* ev handler cookie */
};
TAILQ_HEAD(wmi_info_list_head, wmi_info)
wmi_info_list = TAILQ_HEAD_INITIALIZER(wmi_info_list);
ACPI_SERIAL_DECL(acpi_wmi, "ACPI-WMI Mapping");
/* public interface - declaration */
/* standard device interface*/
static int acpi_wmi_probe(device_t dev);
static int acpi_wmi_attach(device_t dev);
static int acpi_wmi_detach(device_t dev);
/* see acpi_wmi_if.m */
static int acpi_wmi_provides_guid_string_method(device_t dev,
const char *guid_string);
static ACPI_STATUS acpi_wmi_evaluate_call_method(device_t dev,
const char *guid_string, UINT8 instance,
UINT32 method_id, const ACPI_BUFFER *in,
ACPI_BUFFER *out);
static ACPI_STATUS acpi_wmi_install_event_handler_method(device_t dev,
const char *guid_string, ACPI_NOTIFY_HANDLER handler,
void *data);
static ACPI_STATUS acpi_wmi_remove_event_handler_method(device_t dev,
const char *guid_string);
static ACPI_STATUS acpi_wmi_get_event_data_method(device_t dev,
UINT32 event_id, ACPI_BUFFER *out);
static ACPI_STATUS acpi_wmi_get_block_method(device_t dev,
const char *guid_string,
UINT8 instance, ACPI_BUFFER *out);
static ACPI_STATUS acpi_wmi_set_block_method(device_t dev,
const char *guid_string,
UINT8 instance, const ACPI_BUFFER *in);
/* private interface - declaration */
/* callbacks */
static void acpi_wmi_notify_handler(ACPI_HANDLE h, UINT32 notify,
void *context);
static ACPI_STATUS acpi_wmi_ec_handler(UINT32 function,
ACPI_PHYSICAL_ADDRESS address, UINT32 width,
ACPI_INTEGER *value, void *context,
void *region_context);
/* helpers */
static ACPI_STATUS acpi_wmi_read_wdg_blocks(ACPI_HANDLE h);
static ACPI_STATUS acpi_wmi_toggle_we_event_generation(device_t dev,
struct wmi_info *winfo,
enum event_generation_state state);
static int acpi_wmi_guid_string_to_guid(const UINT8 *guid_string,
UINT8 *guid);
static struct wmi_info* acpi_wmi_lookup_wmi_info_by_guid_string(
const char *guid_string);
static d_open_t acpi_wmi_wmistat_open;
static d_close_t acpi_wmi_wmistat_close;
static d_read_t acpi_wmi_wmistat_read;
/* handler /dev/wmistat device */
static struct cdevsw wmistat_cdevsw = {
.d_version = D_VERSION,
.d_open = acpi_wmi_wmistat_open,
.d_close = acpi_wmi_wmistat_close,
.d_read = acpi_wmi_wmistat_read,
.d_name = "wmistat",
};
static device_method_t acpi_wmi_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, acpi_wmi_probe),
DEVMETHOD(device_attach, acpi_wmi_attach),
DEVMETHOD(device_detach, acpi_wmi_detach),
/* acpi_wmi interface */
DEVMETHOD(acpi_wmi_provides_guid_string,
acpi_wmi_provides_guid_string_method),
DEVMETHOD(acpi_wmi_evaluate_call, acpi_wmi_evaluate_call_method),
DEVMETHOD(acpi_wmi_install_event_handler,
acpi_wmi_install_event_handler_method),
DEVMETHOD(acpi_wmi_remove_event_handler,
acpi_wmi_remove_event_handler_method),
DEVMETHOD(acpi_wmi_get_event_data, acpi_wmi_get_event_data_method),
DEVMETHOD(acpi_wmi_get_block, acpi_wmi_get_block_method),
DEVMETHOD(acpi_wmi_set_block, acpi_wmi_set_block_method),
{0, 0}
};
static driver_t acpi_wmi_driver = {
"acpi_wmi",
acpi_wmi_methods,
sizeof(struct acpi_wmi_softc),
};
static devclass_t acpi_wmi_devclass;
DRIVER_MODULE(acpi_wmi, acpi, acpi_wmi_driver, acpi_wmi_devclass, 0, 0);
MODULE_VERSION(acpi_wmi, 1);
MODULE_DEPEND(acpi_wmi, acpi, 1, 1, 1);
static char *wmi_ids[] = {"PNP0C14", "PNP0c14", NULL};
/*
* Probe for the PNP0C14 ACPI node
*/
static int
acpi_wmi_probe(device_t dev)
{
if (acpi_disabled("wmi") ||
ACPI_ID_PROBE(device_get_parent(dev), dev, wmi_ids) == NULL)
return (ENXIO);
device_set_desc(dev, "ACPI-WMI mapping");
return (0);
}
/*
* Attach the device by:
* - Looking for the first ACPI EC device
* - Install the notify handler
* - Install the EC address space handler
* - Look for the _WDG node and read GUID information blocks
*/
static int
acpi_wmi_attach(device_t dev)
{
struct acpi_wmi_softc *sc;
int ret;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
ret = ENXIO;
ACPI_SERIAL_BEGIN(acpi_wmi);
sc->wmi_dev = dev;
sc->wmi_handle = acpi_get_handle(dev);
TAILQ_INIT(&wmi_info_list);
/* XXX Only works with one EC, but nearly all systems only have one. */
if ((sc->ec_dev = devclass_get_device(devclass_find("acpi_ec"), 0))
== NULL)
device_printf(dev, "cannot find EC device\n");
else if (ACPI_FAILURE((status = AcpiInstallNotifyHandler(sc->wmi_handle,
ACPI_DEVICE_NOTIFY, acpi_wmi_notify_handler, sc))))
device_printf(sc->wmi_dev, "couldn't install notify handler - %s\n",
AcpiFormatException(status));
else if (ACPI_FAILURE((status = AcpiInstallAddressSpaceHandler(
sc->wmi_handle, ACPI_ADR_SPACE_EC, acpi_wmi_ec_handler,
NULL, sc)))) {
device_printf(sc->wmi_dev, "couldn't install EC handler - %s\n",
AcpiFormatException(status));
AcpiRemoveNotifyHandler(sc->wmi_handle, ACPI_DEVICE_NOTIFY,
acpi_wmi_notify_handler);
} else if (ACPI_FAILURE((status = acpi_wmi_read_wdg_blocks(
sc->wmi_handle)))) {
device_printf(sc->wmi_dev, "couldn't parse _WDG - %s\n",
AcpiFormatException(status));
AcpiRemoveNotifyHandler(sc->wmi_handle, ACPI_DEVICE_NOTIFY,
acpi_wmi_notify_handler);
AcpiRemoveAddressSpaceHandler(sc->wmi_handle, ACPI_ADR_SPACE_EC,
acpi_wmi_ec_handler);
} else {
sc->wmistat_dev_t = make_dev(&wmistat_cdevsw, 0, UID_ROOT,
GID_WHEEL, 0644, "wmistat");
sc->wmistat_dev_t->si_drv1 = sc;
sc->wmistat_open_pid = 0;
sc->wmistat_bufptr = -1;
ret = 0;
}
ACPI_SERIAL_END(acpi_wmi);
return (ret);
}
/*
* Detach the driver by:
* - Removing notification handler
* - Removing address space handler
* - Turning off event generation for all WExx event activated by
* child drivers
*/
static int
acpi_wmi_detach(device_t dev)
{
struct wmi_info *winfo, *tmp;
struct acpi_wmi_softc *sc;
int ret;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
ACPI_SERIAL_BEGIN(acpi_wmi);
if (sc->wmistat_open_pid != 0) {
ret = EBUSY;
} else {
AcpiRemoveNotifyHandler(sc->wmi_handle, ACPI_DEVICE_NOTIFY,
acpi_wmi_notify_handler);
AcpiRemoveAddressSpaceHandler(sc->wmi_handle,
ACPI_ADR_SPACE_EC, acpi_wmi_ec_handler);
TAILQ_FOREACH_SAFE(winfo, &wmi_info_list, wmi_list, tmp) {
if (winfo->event_handler)
acpi_wmi_toggle_we_event_generation(dev,
winfo, EVENT_GENERATION_OFF);
TAILQ_REMOVE(&wmi_info_list, winfo, wmi_list);
free(winfo, M_ACPIWMI);
}
if (sc->wmistat_bufptr != -1) {
sbuf_delete(&sc->wmistat_sbuf);
sc->wmistat_bufptr = -1;
}
sc->wmistat_open_pid = 0;
destroy_dev(sc->wmistat_dev_t);
ret = 0;
}
ACPI_SERIAL_END(acpi_wmi);
return (ret);
}
/*
* Check if the given GUID string (human readable format
* AABBCCDD-EEFF-GGHH-IIJJ-KKLLMMNNOOPP)
* exists within _WDG
*/
static int
acpi_wmi_provides_guid_string_method(device_t dev, const char *guid_string)
{
int ret;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
ACPI_SERIAL_BEGIN(acpi_wmi);
ret = (acpi_wmi_lookup_wmi_info_by_guid_string(guid_string) == NULL)?0:1;
ACPI_SERIAL_END(acpi_wmi);
return (ret);
}
/*
* Call a method "method_id" on the given GUID block
* write result into user provided output buffer
*/
static ACPI_STATUS
acpi_wmi_evaluate_call_method(device_t dev, const char *guid_string,
UINT8 instance, UINT32 method_id, const ACPI_BUFFER *in, ACPI_BUFFER *out)
{
ACPI_OBJECT params[3];
ACPI_OBJECT_LIST input;
char method[5] = "WMxx";
struct wmi_info *winfo;
struct acpi_wmi_softc *sc;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
ACPI_SERIAL_BEGIN(acpi_wmi);
if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
== NULL)
status = AE_NOT_FOUND;
else if (!(winfo->ginfo.flags & ACPI_WMI_REGFLAG_METHOD))
status = AE_BAD_DATA;
else if (instance > winfo->ginfo.max_instance)
status = AE_BAD_PARAMETER;
else {
params[0].Type = ACPI_TYPE_INTEGER;
params[0].Integer.Value = instance;
params[1].Type = ACPI_TYPE_INTEGER;
params[1].Integer.Value = method_id;
input.Pointer = params;
input.Count = 2;
if (in) {
params[2].Type =
(winfo->ginfo.flags & ACPI_WMI_REGFLAG_STRING)
?ACPI_TYPE_STRING:ACPI_TYPE_BUFFER;
params[2].Buffer.Length = in->Length;
params[2].Buffer.Pointer = in->Pointer;
input.Count = 3;
}
method[2] = winfo->ginfo.oid[0];
method[3] = winfo->ginfo.oid[1];
status = AcpiEvaluateObject(sc->wmi_handle, method,
&input, out);
}
ACPI_SERIAL_END(acpi_wmi);
return (status);
}
/*
* Install a user provided event_handler on the given GUID
* provided *data will be passed on callback
* If there is already an existing event handler registered it will be silently
* discarded
*/
static ACPI_STATUS
acpi_wmi_install_event_handler_method(device_t dev, const char *guid_string,
ACPI_NOTIFY_HANDLER event_handler, void *data)
{
struct wmi_info *winfo;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
status = AE_OK;
ACPI_SERIAL_BEGIN(acpi_wmi);
if (guid_string == NULL || event_handler == NULL)
status = AE_BAD_PARAMETER;
else if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
== NULL)
status = AE_NOT_EXIST;
else if (winfo->event_handler != NULL ||
(status = acpi_wmi_toggle_we_event_generation(dev, winfo,
EVENT_GENERATION_ON)) == AE_OK) {
winfo->event_handler = event_handler;
winfo->event_handler_user_data = data;
}
ACPI_SERIAL_END(acpi_wmi);
return (status);
}
/*
* Remove a previously installed event handler from the given GUID
* If there was none installed, this call is silently discarded and
* reported as AE_OK
*/
static ACPI_STATUS
acpi_wmi_remove_event_handler_method(device_t dev, const char *guid_string)
{
struct wmi_info *winfo;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
status = AE_OK;
ACPI_SERIAL_BEGIN(acpi_wmi);
if (guid_string &&
(winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
!= NULL && winfo->event_handler) {
status = acpi_wmi_toggle_we_event_generation(dev, winfo,
EVENT_GENERATION_OFF);
winfo->event_handler = NULL;
winfo->event_handler_user_data = NULL;
}
ACPI_SERIAL_END(acpi_wmi);
return (status);
}
/*
* Get details on an event received through a callback registered
* through ACPI_WMI_REMOVE_EVENT_HANDLER into a user provided output buffer.
* (event_id equals "notify" passed in the callback)
*/
static ACPI_STATUS
acpi_wmi_get_event_data_method(device_t dev, UINT32 event_id, ACPI_BUFFER *out)
{
ACPI_OBJECT_LIST input;
ACPI_OBJECT params[1];
struct acpi_wmi_softc *sc;
struct wmi_info *winfo;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
status = AE_NOT_FOUND;
ACPI_SERIAL_BEGIN(acpi_wmi);
params[0].Type = ACPI_TYPE_INTEGER;
params[0].Integer.Value = event_id;
input.Pointer = params;
input.Count = 1;
TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) &&
((UINT8) winfo->ginfo.oid[0] == event_id)) {
status = AcpiEvaluateObject(sc->wmi_handle, "_WED",
&input, out);
break;
}
}
ACPI_SERIAL_END(acpi_wmi);
return (status);
}
/*
* Read a block of data from the given GUID (using WQxx (query))
* Will be returned in a user provided buffer (out).
* If the method is marked as expensive (ACPI_WMI_REGFLAG_EXPENSIVE)
* we will first call the WCxx control method to lock the node to
* lock the node for data collection and release it afterwards.
* (Failed WCxx calls are ignored to "support" broken implementations)
*/
static ACPI_STATUS
acpi_wmi_get_block_method(device_t dev, const char *guid_string, UINT8 instance,
ACPI_BUFFER *out)
{
char wc_method[5] = "WCxx";
char wq_method[5] = "WQxx";
ACPI_OBJECT_LIST wc_input;
ACPI_OBJECT_LIST wq_input;
ACPI_OBJECT wc_params[1];
ACPI_OBJECT wq_params[1];
ACPI_HANDLE wc_handle;
struct acpi_wmi_softc *sc;
struct wmi_info *winfo;
ACPI_STATUS status;
ACPI_STATUS wc_status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
wc_status = AE_ERROR;
ACPI_SERIAL_BEGIN(acpi_wmi);
if (guid_string == NULL || out == NULL)
status = AE_BAD_PARAMETER;
else if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
== NULL)
status = AE_ERROR;
else if (instance > winfo->ginfo.max_instance)
status = AE_BAD_PARAMETER;
else if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) ||
(winfo->ginfo.flags & ACPI_WMI_REGFLAG_METHOD))
status = AE_ERROR;
else {
wq_params[0].Type = ACPI_TYPE_INTEGER;
wq_params[0].Integer.Value = instance;
wq_input.Pointer = wq_params;
wq_input.Count = 1;
if (winfo->ginfo.flags & ACPI_WMI_REGFLAG_EXPENSIVE) {
wc_params[0].Type = ACPI_TYPE_INTEGER;
wc_params[0].Integer.Value = 1;
wc_input.Pointer = wc_params;
wc_input.Count = 1;
wc_method[2] = winfo->ginfo.oid[0];
wc_method[3] = winfo->ginfo.oid[1];
wc_status = AcpiGetHandle(sc->wmi_handle, wc_method,
&wc_handle);
if (ACPI_SUCCESS(wc_status))
wc_status = AcpiEvaluateObject(wc_handle,
wc_method, &wc_input, NULL);
}
wq_method[2] = winfo->ginfo.oid[0];
wq_method[3] = winfo->ginfo.oid[1];
status = AcpiEvaluateObject(sc->wmi_handle, wq_method,
&wq_input, out);
if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EXPENSIVE)
&& ACPI_SUCCESS(wc_status)) {
wc_params[0].Integer.Value = 0;
status = AcpiEvaluateObject(wc_handle, wc_method,
&wc_input, NULL); /* XXX this might be
the wrong status to
return? */
}
}
ACPI_SERIAL_END(acpi_wmi);
return (status);
}
/*
* Write a block of data to the given GUID (using WSxx)
*/
static ACPI_STATUS
acpi_wmi_set_block_method(device_t dev, const char *guid_string, UINT8 instance,
const ACPI_BUFFER *in)
{
char method[5] = "WSxx";
ACPI_OBJECT_LIST input;
ACPI_OBJECT params[2];
struct wmi_info *winfo;
struct acpi_wmi_softc *sc;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
ACPI_SERIAL_BEGIN(acpi_wmi);
if (guid_string == NULL || in == NULL)
status = AE_BAD_DATA;
else if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
== NULL)
status = AE_ERROR;
else if (instance > winfo->ginfo.max_instance)
status = AE_BAD_PARAMETER;
else if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) ||
(winfo->ginfo.flags & ACPI_WMI_REGFLAG_METHOD))
status = AE_ERROR;
else {
params[0].Type = ACPI_TYPE_INTEGER;
params[0].Integer.Value = instance;
input.Pointer = params;
input.Count = 2;
params[1].Type = (winfo->ginfo.flags & ACPI_WMI_REGFLAG_STRING)
?ACPI_TYPE_STRING:ACPI_TYPE_BUFFER;
params[1].Buffer.Length = in->Length;
params[1].Buffer.Pointer = in->Pointer;
method[2] = winfo->ginfo.oid[0];
method[3] = winfo->ginfo.oid[1];
status = AcpiEvaluateObject(sc->wmi_handle, method,
&input, NULL);
}
ACPI_SERIAL_END(acpi_wmi);
return (status);
}
/*
* Handle events received and dispatch them to
* stakeholders that registered through ACPI_WMI_INSTALL_EVENT_HANDLER
*/
static void
acpi_wmi_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
{
ACPI_NOTIFY_HANDLER handler;
void *handler_data;
struct wmi_info *winfo;
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
handler = NULL;
handler_data = NULL;
ACPI_SERIAL_BEGIN(acpi_wmi);
TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) &&
((UINT8) winfo->ginfo.oid[0] == notify)) {
if (winfo->event_handler) {
handler = winfo->event_handler;
handler_data = winfo->event_handler_user_data;
break;
}
}
}
ACPI_SERIAL_END(acpi_wmi);
if (handler) {
handler(h, notify, handler_data);
}
}
/*
* Handle EC address space notifications reveived on the WDG node
* (this mimics EcAddressSpaceHandler in acpi_ec.c)
*/
static ACPI_STATUS
acpi_wmi_ec_handler(UINT32 function, ACPI_PHYSICAL_ADDRESS address,
UINT32 width, ACPI_INTEGER *value, void *context,
void *region_context)
{
struct acpi_wmi_softc *sc;
int i;
ACPI_INTEGER ec_data;
UINT8 ec_addr;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, (UINT32)Address);
sc = (struct acpi_wmi_softc *)context;
if (width % 8 != 0 || value == NULL || context == NULL)
return (AE_BAD_PARAMETER);
if (address + (width / 8) - 1 > 0xFF)
return (AE_BAD_ADDRESS);
if (function == ACPI_READ)
*value = 0;
ec_addr = address;
status = AE_ERROR;
for (i = 0; i < width; i += 8, ++ec_addr) {
switch (function) {
case ACPI_READ:
status = ACPI_EC_READ(sc->ec_dev, ec_addr, &ec_data, 1);
if (ACPI_SUCCESS(status))
*value |= ((ACPI_INTEGER)ec_data) << i;
break;
case ACPI_WRITE:
ec_data = (UINT8)((*value) >> i);
status = ACPI_EC_WRITE(sc->ec_dev, ec_addr, ec_data, 1);
break;
default:
device_printf(sc->wmi_dev,
"invalid acpi_wmi_ec_handler function %d\n",
function);
status = AE_BAD_PARAMETER;
break;
}
if (ACPI_FAILURE(status))
break;
}
return (status);
}
/*
* Read GUID blocks from the _WDG node
* into wmi_info_list.
*/
static ACPI_STATUS
acpi_wmi_read_wdg_blocks(ACPI_HANDLE h)
{
ACPI_BUFFER out = {ACPI_ALLOCATE_BUFFER, NULL};
struct guid_info *ginfo;
ACPI_OBJECT *obj;
struct wmi_info *winfo;
UINT32 i;
UINT32 wdg_block_count;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
ACPI_SERIAL_ASSERT(acpi_wmi);
if (ACPI_FAILURE(status = AcpiEvaluateObject(h, "_WDG", NULL, &out)))
return (status);
obj = (ACPI_OBJECT*) out.Pointer;
wdg_block_count = obj->Buffer.Length / sizeof(struct guid_info);
if ((ginfo = malloc(obj->Buffer.Length, M_ACPIWMI, M_NOWAIT))
== NULL) {
AcpiOsFree(out.Pointer);
return (AE_NO_MEMORY);
}
memcpy(ginfo, obj->Buffer.Pointer, obj->Buffer.Length);
for (i = 0; i < wdg_block_count; ++i) {
if ((winfo = malloc(sizeof(struct wmi_info), M_ACPIWMI,
M_NOWAIT | M_ZERO)) == NULL) {
AcpiOsFree(out.Pointer);
free(ginfo, M_ACPIWMI);
return (AE_NO_MEMORY);
}
winfo->ginfo = ginfo[i];
TAILQ_INSERT_TAIL(&wmi_info_list, winfo, wmi_list);
}
AcpiOsFree(out.Pointer);
free(ginfo, M_ACPIWMI);
return (status);
}
/*
* Toggle event generation in for the given GUID (passed by winfo)
* Turn on to get notified (through acpi_wmi_notify_handler) if events happen
* on the given GUID.
*/
static ACPI_STATUS
acpi_wmi_toggle_we_event_generation(device_t dev, struct wmi_info *winfo,
enum event_generation_state state)
{
char method[5] = "WExx";
ACPI_OBJECT_LIST input;
ACPI_OBJECT params[1];
struct acpi_wmi_softc *sc;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
ACPI_SERIAL_ASSERT(acpi_wmi);
params[0].Type = ACPI_TYPE_INTEGER;
params[0].Integer.Value = state==EVENT_GENERATION_ON?1:0;
input.Pointer = params;
input.Count = 1;
UINT8 hi = ((UINT8) winfo->ginfo.oid[0]) >> 4;
UINT8 lo = ((UINT8) winfo->ginfo.oid[0]) & 0xf;
method[2] = (hi > 9 ? hi + 55: hi + 48);
method[3] = (lo > 9 ? lo + 55: lo + 48);
status = AcpiEvaluateObject(sc->wmi_handle, method, &input, NULL);
if (status == AE_NOT_FOUND) status = AE_OK;
return (status);
}
/*
* Convert given two digit hex string (hexin) to an UINT8 referenced
* by byteout.
* Return != 0 if the was a problem (invalid input)
*/
static __inline int acpi_wmi_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
{
unsigned int hi;
unsigned int lo;
hi = hexin[0];
lo = hexin[1];
if ('0' <= hi && hi <= '9')
hi -= '0';
else if ('A' <= hi && hi <= 'F')
hi -= ('A' - 10);
else if ('a' <= hi && hi <= 'f')
hi -= ('a' - 10);
else
return (1);
if ('0' <= lo && lo <= '9')
lo -= '0';
else if ('A' <= lo && lo <= 'F')
lo -= ('A' - 10);
else if ('a' <= lo && lo <= 'f')
lo -= ('a' - 10);
else
return (1);
*byteout = (hi << 4) + lo;
return (0);
}
/*
* Convert a human readable 36 character GUID into a 16byte
* machine readable one.
* The basic algorithm looks as follows:
* Input: AABBCCDD-EEFF-GGHH-IIJJ-KKLLMMNNOOPP
* Output: DCBAFEHGIJKLMNOP
* (AA BB CC etc. represent two digit hex numbers == bytes)
* Return != 0 if passed guid string is invalid
*/
static int
acpi_wmi_guid_string_to_guid(const UINT8 *guid_string, UINT8 *guid)
{
static const int mapping[20] = {3, 2, 1, 0, -1, 5, 4, -1, 7, 6, -1,
8, 9, -1, 10, 11, 12, 13, 14, 15};
int i;
for (i = 0; i < 20; ++i, ++guid_string) {
if (mapping[i] >= 0) {
if (acpi_wmi_hex_to_int(guid_string,
&guid[mapping[i]]))
return (-1);
++guid_string;
} else if (*guid_string != '-')
return (-1);
}
return (0);
}
/*
* Lookup a wmi_info structure in wmi_list based on a
* human readable GUID
* Return NULL if the GUID is unknown in the _WDG
*/
static struct wmi_info*
acpi_wmi_lookup_wmi_info_by_guid_string(const char *guid_string)
{
char guid[16];
struct wmi_info *winfo;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
ACPI_SERIAL_ASSERT(acpi_wmi);
if (!acpi_wmi_guid_string_to_guid(guid_string, guid)) {
TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
if (!memcmp(winfo->ginfo.guid, guid, 16)) {
return (winfo);
}
}
}
return (NULL);
}
/*
* open wmistat device
*/
static int
acpi_wmi_wmistat_open(struct cdev* dev, int flags, int mode, struct thread *td)
{
struct acpi_wmi_softc *sc;
int ret;
if (dev == NULL || dev->si_drv1 == NULL)
return (EBADF);
sc = dev->si_drv1;
ACPI_SERIAL_BEGIN(acpi_wmi);
if (sc->wmistat_open_pid != 0) {
ret = EBUSY;
}
else {
if (sbuf_new(&sc->wmistat_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
== NULL) {
ret = ENXIO;
} else {
sc->wmistat_open_pid = td->td_proc->p_pid;
sc->wmistat_bufptr = 0;
ret = 0;
}
}
ACPI_SERIAL_END(acpi_wmi);
return (ret);
}
/*
* close wmistat device
*/
static int
acpi_wmi_wmistat_close(struct cdev* dev, int flags, int mode,
struct thread *td)
{
struct acpi_wmi_softc *sc;
int ret;
if (dev == NULL || dev->si_drv1 == NULL)
return (EBADF);
sc = dev->si_drv1;
ACPI_SERIAL_BEGIN(acpi_wmi);
if (sc->wmistat_open_pid == 0) {
ret = EBADF;
}
else {
if (sc->wmistat_bufptr != -1) {
sbuf_delete(&sc->wmistat_sbuf);
sc->wmistat_bufptr = -1;
}
sc->wmistat_open_pid = 0;
ret = 0;
}
ACPI_SERIAL_END(acpi_wmi);
return (ret);
}
/*
* Read from wmistat guid information
*/
static int
acpi_wmi_wmistat_read(struct cdev *dev, struct uio *buf, int flag)
{
struct acpi_wmi_softc *sc;
struct wmi_info *winfo;
int l;
int ret;
UINT8* guid;
if (dev == NULL || dev->si_drv1 == NULL)
return (EBADF);
sc = dev->si_drv1;
ACPI_SERIAL_BEGIN(acpi_wmi);
if (sc->wmistat_open_pid != buf->uio_td->td_proc->p_pid ||
sc->wmistat_bufptr == -1) {
ret = EBADF;
}
else {
if (!sbuf_done(&sc->wmistat_sbuf)) {
sbuf_printf(&sc->wmistat_sbuf, "GUID "
" INST EXPE METH STR "
"EVENT OID\n");
TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
guid = (UINT8*)winfo->ginfo.guid;
sbuf_printf(&sc->wmistat_sbuf,
"{%02X%02X%02X%02X-%02X%02X-"
"%02X%02X-%02X%02X-%02X%02X"
"%02X%02X%02X%02X} %3d %-5s",
guid[3], guid[2], guid[1], guid[0],
guid[5], guid[4],
guid[7], guid[6],
guid[8], guid[9],
guid[10], guid[11], guid[12],
guid[13], guid[14], guid[15],
winfo->ginfo.max_instance,
(winfo->ginfo.flags&
ACPI_WMI_REGFLAG_EXPENSIVE)?
"YES":"NO"
);
if (winfo->ginfo.flags&ACPI_WMI_REGFLAG_METHOD)
sbuf_printf(&sc->wmistat_sbuf,
"WM%c%c ",
winfo->ginfo.oid[0],
winfo->ginfo.oid[1]);
else
sbuf_printf(&sc->wmistat_sbuf, "NO ");
sbuf_printf(&sc->wmistat_sbuf, "%-4s",
(winfo->ginfo.flags&
ACPI_WMI_REGFLAG_STRING)?"YES":"NO"
);
if (winfo->ginfo.flags&ACPI_WMI_REGFLAG_EVENT)
sbuf_printf(&sc->wmistat_sbuf,
"0x%02X%s -\n",
(UINT8)winfo->ginfo.oid[0],
winfo->event_handler==NULL?
" ":"+");
else
sbuf_printf(&sc->wmistat_sbuf,
"NO %c%c\n",
winfo->ginfo.oid[0],
winfo->ginfo.oid[1]);
}
sbuf_finish(&sc->wmistat_sbuf);
}
if (sbuf_len(&sc->wmistat_sbuf) <= 0) {
sbuf_delete(&sc->wmistat_sbuf);
sc->wmistat_bufptr = -1;
sc->wmistat_open_pid = 0;
ret = ENOMEM;
} else {
l = min(buf->uio_resid, sbuf_len(&sc->wmistat_sbuf) -
sc->wmistat_bufptr);
ret = (l > 0)?uiomove(sbuf_data(&sc->wmistat_sbuf) +
sc->wmistat_bufptr, l, buf) : 0;
sc->wmistat_bufptr += l;
}
}
ACPI_SERIAL_END(acpi_wmi);
return (ret);
}
--------------000302080806090206000000
Content-Type: text/plain;
name="acpi_hp.c"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
filename="acpi_hp.c"
/*-
* Copyright (c) 2009 Michael Gmelin <freebsd@grem.de>
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Driver for extra ACPI-controlled features found on HP laptops
* that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p).
* Allows to control and read status of integrated hardware and read
* BIOS settings through CMI.
* Inspired by the hp-wmi driver, which implements a subset of these
* features (hotkeys) on Linux.
*
* HP CMI whitepaper:
* http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf
* wmi-hp for Linux:
* http://www.kernel.org
* WMI and ACPI:
* http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
*/
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/sbuf.h>
#include <sys/module.h>
#include <sys/sysctl.h>
#include <contrib/dev/acpica/acpi.h>
#include <dev/acpica/acpivar.h>
#include "acpi_wmi_if.h"
#define _COMPONENT ACPI_OEM
ACPI_MODULE_NAME("HP")
#define ACPI_HP_WMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
#define ACPI_HP_WMI_BIOS_GUID "5FB7F034-2C63-45E9-BE91-3D44E2C707E4"
#define ACPI_HP_WMI_CMI_GUID "2D114B49-2DFB-4130-B8FE-4A3C09E75133"
#define ACPI_HP_WMI_DISPLAY_COMMAND 0x1
#define ACPI_HP_WMI_HDDTEMP_COMMAND 0x2
#define ACPI_HP_WMI_ALS_COMMAND 0x3
#define ACPI_HP_WMI_DOCK_COMMAND 0x4
#define ACPI_HP_WMI_WIRELESS_COMMAND 0x5
#define ACPI_HP_METHOD_WLAN_ENABLED 1
#define ACPI_HP_METHOD_WLAN_RADIO 2
#define ACPI_HP_METHOD_WLAN_ON_AIR 3
#define ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON 4
#define ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF 5
#define ACPI_HP_METHOD_BLUETOOTH_ENABLED 6
#define ACPI_HP_METHOD_BLUETOOTH_RADIO 7
#define ACPI_HP_METHOD_BLUETOOTH_ON_AIR 8
#define ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON 9
#define ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF 10
#define ACPI_HP_METHOD_WWAN_ENABLED 11
#define ACPI_HP_METHOD_WWAN_RADIO 12
#define ACPI_HP_METHOD_WWAN_ON_AIR 13
#define ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON 14
#define ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF 15
#define ACPI_HP_METHOD_ALS 16
#define ACPI_HP_METHOD_DISPLAY 17
#define ACPI_HP_METHOD_HDDTEMP 18
#define ACPI_HP_METHOD_DOCK 19
#define ACPI_HP_METHOD_CMI_DETAIL 20
#define HP_MASK_WWAN_ON_AIR 0x1000000
#define HP_MASK_BLUETOOTH_ON_AIR 0x10000
#define HP_MASK_WLAN_ON_AIR 0x100
#define HP_MASK_WWAN_RADIO 0x8000000
#define HP_MASK_BLUETOOTH_RADIO 0x80000
#define HP_MASK_WLAN_RADIO 0x800
#define HP_MASK_WWAN_ENABLED 0x2000000
#define HP_MASK_BLUETOOTH_ENABLED 0x20000
#define HP_MASK_WLAN_ENABLED 0x200
#define ACPI_HP_CMI_DETAIL_PATHS 0x01
#define ACPI_HP_CMI_DETAIL_ENUMS 0x02
#define ACPI_HP_CMI_DETAIL_FLAGS 0x04
struct acpi_hp_inst_seq_pair {
UINT32 sequence; /* sequence number as suggested by cmi bios */
UINT8 instance; /* object instance on guid */
};
struct acpi_hp_softc {
device_t dev;
ACPI_HANDLE handle;
device_t wmi_dev;
int has_notify; /* notification GUID found */
int has_cmi; /* CMI GUID found */
int cmi_detail; /* CMI detail level
(set by sysctl) */
int wlan_enable_if_radio_on; /* set by sysctl */
int wlan_disable_if_radio_off; /* set by sysctl */
int bluetooth_enable_if_radio_on; /* set by sysctl */
int bluetooth_disable_if_radio_off; /* set by sysctl */
int wwan_enable_if_radio_on; /* set by sysctl */
int wwan_disable_if_radio_off; /* set by sysctl */
int was_wlan_on_air; /* last known WLAN
on air status */
int was_bluetooth_on_air; /* last known BT
on air status */
int was_wwan_on_air; /* last known WWAN
on air status */
struct sysctl_ctx_list *sysctl_ctx;
struct sysctl_oid *sysctl_tree;
struct cdev *hpcmi_dev_t; /* hpcmi device handle */
struct sbuf hpcmi_sbuf; /* /dev/hpcmi output sbuf */
pid_t hpcmi_open_pid; /* pid operating on
/dev/hpcmi */
int hpcmi_bufptr; /* current pointer position
in /dev/hpcmi output buffer
*/
int cmi_order_size; /* size of cmi_order list */
struct acpi_hp_inst_seq_pair cmi_order[128]; /* list of CMI
instances ordered by BIOS suggested sequence */
};
static struct {
char *name;
int method;
char *description;
int access;
} acpi_hp_sysctls[] = {
{
.name = "wlan_enabled",
.method = ACPI_HP_METHOD_WLAN_ENABLED,
.description = "Enable/Disable WLAN (WiFi)",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "wlan_radio",
.method = ACPI_HP_METHOD_WLAN_RADIO,
.description = "WLAN radio status",
.access = CTLTYPE_INT | CTLFLAG_RD
},
{
.name = "wlan_on_air",
.method = ACPI_HP_METHOD_WLAN_ON_AIR,
.description = "WLAN radio ready to use (enabled and radio)",
.access = CTLTYPE_INT | CTLFLAG_RD
},
{
.name = "wlan_enable_if_radio_on",
.method = ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON,
.description = "Enable WLAN if radio is turned on",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "wlan_disable_if_radio_off",
.method = ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF,
.description = "Disable WLAN if radio is turned off",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "bt_enabled",
.method = ACPI_HP_METHOD_BLUETOOTH_ENABLED,
.description = "Enable/Disable Bluetooth",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "bt_radio",
.method = ACPI_HP_METHOD_BLUETOOTH_RADIO,
.description = "Bluetooth radio status",
.access = CTLTYPE_INT | CTLFLAG_RD
},
{
.name = "bt_on_air",
.method = ACPI_HP_METHOD_BLUETOOTH_ON_AIR,
.description = "Bluetooth radio ready to use"
" (enabled and radio)",
.access = CTLTYPE_INT | CTLFLAG_RD
},
{
.name = "bt_enable_if_radio_on",
.method = ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON,
.description = "Enable bluetooth if radio is turned on",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "bt_disable_if_radio_off",
.method = ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF,
.description = "Disable bluetooth if radio is turned off",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "wwan_enabled",
.method = ACPI_HP_METHOD_WWAN_ENABLED,
.description = "Enable/Disable WWAN (UMTS)",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "wwan_radio",
.method = ACPI_HP_METHOD_WWAN_RADIO,
.description = "WWAN radio status",
.access = CTLTYPE_INT | CTLFLAG_RD
},
{
.name = "wwan_on_air",
.method = ACPI_HP_METHOD_WWAN_ON_AIR,
.description = "WWAN radio ready to use (enabled and radio)",
.access = CTLTYPE_INT | CTLFLAG_RD
},
{
.name = "wwan_enable_if_radio_on",
.method = ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON,
.description = "Enable WWAN if radio is turned on",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "wwan_disable_if_radio_off",
.method = ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF,
.description = "Disable WWAN if radio is turned off",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "als_enabled",
.method = ACPI_HP_METHOD_ALS,
.description = "Enable/Disable ALS (Ambient light sensor)",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{
.name = "display",
.method = ACPI_HP_METHOD_DISPLAY,
.description = "Display status",
.access = CTLTYPE_INT | CTLFLAG_RD
},
{
.name = "hdd_temperature",
.method = ACPI_HP_METHOD_HDDTEMP,
.description = "HDD temperature",
.access = CTLTYPE_INT | CTLFLAG_RD
},
{
.name = "is_docked",
.method = ACPI_HP_METHOD_DOCK,
.description = "Docking station status",
.access = CTLTYPE_INT | CTLFLAG_RD
},
{
.name = "cmi_detail",
.method = ACPI_HP_METHOD_CMI_DETAIL,
.description = "Details shown in CMI output "
"(cat /dev/hpcmi)",
.access = CTLTYPE_INT | CTLFLAG_RW
},
{ NULL, 0, NULL, 0 }
};
ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping");
static int acpi_hp_probe(device_t dev);
static int acpi_hp_attach(device_t dev);
static int acpi_hp_detach(device_t dev);
static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc);
static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS);
static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method,
int arg, int oldarg);
static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method);
static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command,
int is_write, int val);
static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context);
static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid,
UINT8 instance, char* outbuf, size_t outsize,
UINT32* sequence, int detail);
static void acpi_hp_hex_decode(char* buffer);
static d_open_t acpi_hp_hpcmi_open;
static d_close_t acpi_hp_hpcmi_close;
static d_read_t acpi_hp_hpcmi_read;
/* handler /dev/hpcmi device */
static struct cdevsw hpcmi_cdevsw = {
.d_version = D_VERSION,
.d_open = acpi_hp_hpcmi_open,
.d_close = acpi_hp_hpcmi_close,
.d_read = acpi_hp_hpcmi_read,
.d_name = "hpcmi",
};
static device_method_t acpi_hp_methods[] = {
DEVMETHOD(device_probe, acpi_hp_probe),
DEVMETHOD(device_attach, acpi_hp_attach),
DEVMETHOD(device_detach, acpi_hp_detach),
{0, 0}
};
static driver_t acpi_hp_driver = {
"acpi_hp",
acpi_hp_methods,
sizeof(struct acpi_hp_softc),
};
static devclass_t acpi_hp_devclass;
DRIVER_MODULE(acpi_hp, acpi, acpi_hp_driver, acpi_hp_devclass,
0, 0);
MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1);
MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1);
static void
acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc)
{
int wireless;
int new_wlan_status;
int new_bluetooth_status;
int new_wwan_status;
wireless = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
new_wlan_status = -1;
new_bluetooth_status = -1;
new_wwan_status = -1;
device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless);
if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO)
&& (wireless & HP_MASK_WLAN_ENABLED)) {
acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100);
new_wlan_status = 0;
}
else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO)
&& !(wireless & HP_MASK_WLAN_ENABLED)) {
acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101);
new_wlan_status = 1;
}
if (sc->bluetooth_disable_if_radio_off &&
!(wireless & HP_MASK_BLUETOOTH_RADIO) &&
(wireless & HP_MASK_BLUETOOTH_ENABLED)) {
acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200);
new_bluetooth_status = 0;
}
else if (sc->bluetooth_enable_if_radio_on &&
(wireless & HP_MASK_BLUETOOTH_RADIO) &&
!(wireless & HP_MASK_BLUETOOTH_ENABLED)) {
acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202);
new_bluetooth_status = 1;
}
if (sc->wwan_disable_if_radio_off &&
!(wireless & HP_MASK_WWAN_RADIO) &&
(wireless & HP_MASK_WWAN_ENABLED)) {
acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400);
new_wwan_status = 0;
}
else if (sc->wwan_enable_if_radio_on &&
(wireless & HP_MASK_WWAN_RADIO) &&
!(wireless & HP_MASK_WWAN_ENABLED)) {
acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404);
new_wwan_status = 1;
}
if (new_wlan_status == -1) {
new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR);
if ((new_wlan_status?1:0) != sc->was_wlan_on_air) {
sc->was_wlan_on_air = sc->was_wlan_on_air?0:1;
device_printf(sc->wmi_dev,
"WLAN on air changed to %i "
"(new_wlan_status is %i)\n",
sc->was_wlan_on_air, new_wlan_status);
acpi_UserNotify("HP", sc->handle,
0xc0+sc->was_wlan_on_air);
}
}
if (new_bluetooth_status == -1) {
new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR);
if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) {
sc->was_bluetooth_on_air = sc->was_bluetooth_on_air?
0:1;
device_printf(sc->wmi_dev, "BLUETOOTH on air changed"
" to %i (new_bluetooth_status is %i)\n",
sc->was_bluetooth_on_air, new_bluetooth_status);
acpi_UserNotify("HP", sc->handle,
0xd0+sc->was_bluetooth_on_air);
}
}
if (new_wwan_status == -1) {
new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR);
if ((new_wwan_status?1:0) != sc->was_wwan_on_air) {
sc->was_wwan_on_air = sc->was_wwan_on_air?0:1;
device_printf(sc->wmi_dev, "WWAN on air changed to %i"
" (new_wwan_status is %i)\n",
sc->was_wwan_on_air, new_wwan_status);
acpi_UserNotify("HP", sc->handle,
0xe0+sc->was_wwan_on_air);
}
}
}
static int
acpi_hp_probe(device_t dev)
{
if (acpi_disabled("hp") || device_get_unit(dev) != 0)
return (ENXIO);
device_set_desc(dev, "HP ACPI-WMI Mapping");
return (0);
}
static int
acpi_hp_attach(device_t dev)
{
struct acpi_hp_softc *sc;
struct acpi_softc *acpi_sc;
devclass_t wmi_devclass;
int arg;
ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
sc = device_get_softc(dev);
sc->dev = dev;
sc->handle = acpi_get_handle(dev);
sc->has_notify = 0;
sc->has_cmi = 0;
sc->bluetooth_enable_if_radio_on = 0;
sc->bluetooth_disable_if_radio_off = 0;
sc->wlan_enable_if_radio_on = 0;
sc->wlan_disable_if_radio_off = 0;
sc->wlan_enable_if_radio_on = 0;
sc->wlan_disable_if_radio_off = 0;
sc->was_wlan_on_air = 0;
sc->was_bluetooth_on_air = 0;
sc->was_wwan_on_air = 0;
sc->cmi_detail = 0;
sc->cmi_order_size = -1;
memset(sc->cmi_order, 0, sizeof(sc->cmi_order));
acpi_sc = acpi_device_get_parent_softc(dev);
if (!(wmi_devclass = devclass_find ("acpi_wmi"))) {
device_printf(dev, "Couldn't find acpi_wmi devclass\n");
return (EINVAL);
}
if (!(sc->wmi_dev = devclass_get_device(wmi_devclass, 0))) {
device_printf(dev, "Couldn't find acpi_wmi device\n");
return (EINVAL);
}
if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
ACPI_HP_WMI_BIOS_GUID)) {
device_printf(dev,
"WMI device does not provide the HP BIOS GUID\n");
return (EINVAL);
}
if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
ACPI_HP_WMI_EVENT_GUID)) {
device_printf(dev,
"HP event GUID detected, installing event handler\n");
if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev,
ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) {
device_printf(dev,
"Could not install notification handler!\n");
}
else {
sc->has_notify = 1;
}
}
if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID)) {
device_printf(dev, "HP CMI GUID detected\n");
sc->has_cmi = 1;
}
if (sc->has_cmi) {
sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT,
GID_WHEEL, 0644, "hpcmi");
sc->hpcmi_dev_t->si_drv1 = sc;
sc->hpcmi_open_pid = 0;
sc->hpcmi_bufptr = -1;
}
ACPI_SERIAL_BEGIN(hp);
sc->sysctl_ctx = device_get_sysctl_ctx(dev);
sc->sysctl_tree = device_get_sysctl_tree(dev);
for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) {
arg = 0;
if ((!sc->has_notify &&
(acpi_hp_sysctls[i].method ==
ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON ||
acpi_hp_sysctls[i].method ==
ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF ||
acpi_hp_sysctls[i].method ==
ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON ||
acpi_hp_sysctls[i].method ==
ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF ||
acpi_hp_sysctls[i].method ==
ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON ||
acpi_hp_sysctls[i].method ==
ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) ||
(arg = acpi_hp_sysctl_get(sc,
acpi_hp_sysctls[i].method)) < 0) {
continue;
}
if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) {
sc->was_wlan_on_air = arg;
}
else if (acpi_hp_sysctls[i].method ==
ACPI_HP_METHOD_BLUETOOTH_ON_AIR) {
sc->was_bluetooth_on_air = arg;
}
else if (acpi_hp_sysctls[i].method ==
ACPI_HP_METHOD_WWAN_ON_AIR) {
sc->was_wwan_on_air = arg;
}
SYSCTL_ADD_PROC(sc->sysctl_ctx,
SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
acpi_hp_sysctls[i].name, acpi_hp_sysctls[i].access,
sc, i, acpi_hp_sysctl, "I",
acpi_hp_sysctls[i].description);
}
ACPI_SERIAL_END(hp);
return (0);
}
static int
acpi_hp_detach(device_t dev)
{
int ret;
ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
struct acpi_hp_softc *sc = device_get_softc(dev);
if (sc->has_cmi && sc->hpcmi_open_pid != 0) {
ret = EBUSY;
}
else {
if (sc->has_notify) {
ACPI_WMI_REMOVE_EVENT_HANDLER(dev,
ACPI_HP_WMI_EVENT_GUID);
}
if (sc->hpcmi_bufptr != -1) {
sbuf_delete(&sc->hpcmi_sbuf);
sc->hpcmi_bufptr = -1;
}
sc->hpcmi_open_pid = 0;
destroy_dev(sc->hpcmi_dev_t);
ret = 0;
}
return (ret);
}
static int
acpi_hp_sysctl(SYSCTL_HANDLER_ARGS)
{
struct acpi_hp_softc *sc;
int arg;
int oldarg;
int error = 0;
int function;
int method;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = (struct acpi_hp_softc *)oidp->oid_arg1;
function = oidp->oid_arg2;
method = acpi_hp_sysctls[function].method;
ACPI_SERIAL_BEGIN(hp);
arg = acpi_hp_sysctl_get(sc, method);
oldarg = arg;
error = sysctl_handle_int(oidp, &arg, 0, req);
if (!error && req->newptr != NULL) {
error = acpi_hp_sysctl_set(sc, method, arg, oldarg);
}
ACPI_SERIAL_END(hp);
return (error);
}
static int
acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method)
{
int val = 0;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
ACPI_SERIAL_ASSERT(hp);
switch (method) {
case ACPI_HP_METHOD_WLAN_ENABLED:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
val = ((val & HP_MASK_WLAN_ENABLED) != 0);
break;
case ACPI_HP_METHOD_WLAN_RADIO:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
val = ((val & HP_MASK_WLAN_RADIO) != 0);
break;
case ACPI_HP_METHOD_WLAN_ON_AIR:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
val = ((val & HP_MASK_WLAN_ON_AIR) != 0);
break;
case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
val = sc->wlan_enable_if_radio_on;
break;
case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
val = sc->wlan_disable_if_radio_off;
break;
case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0);
break;
case ACPI_HP_METHOD_BLUETOOTH_RADIO:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0);
break;
case ACPI_HP_METHOD_BLUETOOTH_ON_AIR:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0);
break;
case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
val = sc->bluetooth_enable_if_radio_on;
break;
case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
val = sc->bluetooth_disable_if_radio_off;
break;
case ACPI_HP_METHOD_WWAN_ENABLED:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
val = ((val & HP_MASK_WWAN_ENABLED) != 0);
break;
case ACPI_HP_METHOD_WWAN_RADIO:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
val = ((val & HP_MASK_WWAN_RADIO) != 0);
break;
case ACPI_HP_METHOD_WWAN_ON_AIR:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
val = ((val & HP_MASK_WWAN_ON_AIR) != 0);
break;
case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
val = sc->wwan_enable_if_radio_on;
break;
case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
val = sc->wwan_disable_if_radio_off;
break;
case ACPI_HP_METHOD_ALS:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_ALS_COMMAND, 0, 0);
break;
case ACPI_HP_METHOD_DISPLAY:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0);
break;
case ACPI_HP_METHOD_HDDTEMP:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0);
break;
case ACPI_HP_METHOD_DOCK:
val = acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_DOCK_COMMAND, 0, 0);
break;
case ACPI_HP_METHOD_CMI_DETAIL:
val = sc->cmi_detail;
break;
}
return (val);
}
static int
acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg)
{
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
ACPI_SERIAL_ASSERT(hp);
if (method != ACPI_HP_METHOD_CMI_DETAIL)
arg = arg?1:0;
if (arg != oldarg) {
switch (method) {
case ACPI_HP_METHOD_WLAN_ENABLED:
return (acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 1,
arg?0x101:0x100));
case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
sc->wlan_enable_if_radio_on = arg;
acpi_hp_evaluate_auto_on_off(sc);
break;
case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
sc->wlan_disable_if_radio_off = arg;
acpi_hp_evaluate_auto_on_off(sc);
break;
case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
return (acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 1,
arg?0x202:0x200));
case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
sc->bluetooth_enable_if_radio_on = arg;
acpi_hp_evaluate_auto_on_off(sc);
break;
case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
sc->bluetooth_disable_if_radio_off = arg?1:0;
acpi_hp_evaluate_auto_on_off(sc);
break;
case ACPI_HP_METHOD_WWAN_ENABLED:
return (acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_WIRELESS_COMMAND, 1,
arg?0x404:0x400));
case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
sc->wwan_enable_if_radio_on = arg?1:0;
acpi_hp_evaluate_auto_on_off(sc);
break;
case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
sc->wwan_disable_if_radio_off = arg?1:0;
acpi_hp_evaluate_auto_on_off(sc);
break;
case ACPI_HP_METHOD_ALS:
return (acpi_hp_exec_wmi_command(sc->wmi_dev,
ACPI_HP_WMI_ALS_COMMAND, 1,
arg?1:0));
case ACPI_HP_METHOD_CMI_DETAIL:
sc->cmi_detail = arg;
break;
}
}
return (0);
}
static __inline void
acpi_hp_free_buffer(ACPI_BUFFER* buf) {
if (buf && buf->Pointer) {
AcpiOsFree(buf->Pointer);
}
}
static void
acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context)
{
device_t dev = context;
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
struct acpi_hp_softc *sc = device_get_softc(dev);
ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL };
ACPI_OBJECT *obj;
ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response);
obj = (ACPI_OBJECT*) response.Pointer;
if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) {
if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) {
acpi_hp_evaluate_auto_on_off(sc);
}
}
acpi_hp_free_buffer(&response);
}
static int
acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val)
{
UINT32 params[5] = { 0x55434553,
is_write?2:1,
command,
is_write?4:0,
val};
UINT32* result;
ACPI_OBJECT *obj;
ACPI_BUFFER in = { sizeof(params), ¶ms };
ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
int retval;
if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID,
0, 0x3, &in, &out))) {
acpi_hp_free_buffer(&out);
return (-EINVAL);
}
obj = out.Pointer;
if (!obj || obj->Type != ACPI_TYPE_BUFFER) {
acpi_hp_free_buffer(&out);
return (-EINVAL);
}
result = (UINT32*) obj->Buffer.Pointer;
retval = result[2];
if (result[1] > 0) {
retval = result[1];
}
acpi_hp_free_buffer(&out);
return (retval);
}
static __inline char*
acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) {
int length;
dst[0] = 0;
if (obj->Type == ACPI_TYPE_STRING) {
length = obj->String.Length+1;
if (length > size) {
length = size - 1;
}
strlcpy(dst, obj->String.Pointer, length);
acpi_hp_hex_decode(dst);
}
return (dst);
}
/*
* Read BIOS Setting block in instance "instance".
* The block returned is ACPI_TYPE_PACKAGE which should contain the following
* elements:
* Index Meaning
* 0 Setting Name [string]
* 1 Value (comma separated, asterisk marks the current value) [string]
* 2 Path within the bios hierarchy [string]
* 3 IsReadOnly [int]
* 4 DisplayInUI [int]
* 5 RequiresPhysicalPresence [int]
* 6 Sequence for ordering within the bios settings (absolute) [int]
* 7 Length of prerequisites array [int]
* 8 Prerequisite1 [string]
* 9 Prerequisite2 [string]
* 10 Prerequisite3 [string]
* 11 Current value (in case of enum) [string] / Array length [int]
* 12 Enum length [int] / Array values
* 13ff Enum value at index x [string]
*/
static int
acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance,
char* outbuf, size_t outsize, UINT32* sequence, int detail)
{
ACPI_OBJECT *obj;
ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
int i;
int outlen;
int size = 255;
int has_enums = 0;
char string_buffer[size];
int enumbase;
outlen = 0;
outbuf[0] = 0;
if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) {
acpi_hp_free_buffer(&out);
return (-EINVAL);
}
obj = out.Pointer;
if (!obj && obj->Type != ACPI_TYPE_PACKAGE) {
acpi_hp_free_buffer(&out);
return (-EINVAL);
}
/* check if this matches our expectations based on limited knowledge */
if (obj->Package.Count >= 13 &&
obj->Package.Elements[0].Type == ACPI_TYPE_STRING &&
obj->Package.Elements[1].Type == ACPI_TYPE_STRING &&
obj->Package.Elements[2].Type == ACPI_TYPE_STRING &&
obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER &&
obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER &&
obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER &&
obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER &&
obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER &&
obj->Package.Elements[8].Type == ACPI_TYPE_STRING &&
obj->Package.Elements[9].Type == ACPI_TYPE_STRING &&
obj->Package.Elements[10].Type == ACPI_TYPE_STRING &&
((obj->Package.Elements[11].Type == ACPI_TYPE_STRING &&
obj->Package.Elements[12].Type == ACPI_TYPE_INTEGER &&
obj->Package.Count >=
13+obj->Package.Elements[12].Integer.Value) ||
(obj->Package.Elements[11].Type == ACPI_TYPE_INTEGER &&
obj->Package.Count >=
12+obj->Package.Elements[11].Integer.Value))
) {
enumbase = obj->Package.Elements[11].Type == ACPI_TYPE_STRING?
12:11;
if (detail & ACPI_HP_CMI_DETAIL_PATHS) {
strlcat(outbuf, acpi_hp_get_string_from_object(
&obj->Package.Elements[2], string_buffer, size),
outsize);
outlen += 48;
while (strlen(outbuf) < outlen)
strlcat(outbuf, " ", outsize);
}
strlcat(outbuf, acpi_hp_get_string_from_object(
&obj->Package.Elements[0], string_buffer, size),
outsize);
outlen += 43;
while (strlen(outbuf) < outlen)
strlcat(outbuf, " ", outsize);
if (enumbase == 12)
strlcat(outbuf, acpi_hp_get_string_from_object(
&obj->Package.Elements[11],
string_buffer, size),
outsize);
outlen += 21;
while (strlen(outbuf) < outlen)
strlcat(outbuf, " ", outsize);
for (i = 0; i < strlen(outbuf); ++i)
if (outbuf[i] == '\\')
outbuf[i] = '/';
if (detail & ACPI_HP_CMI_DETAIL_ENUMS) {
for (i = enumbase+1; i < enumbase + 1 +
obj->Package.Elements[enumbase].Integer.Value;
++i) {
acpi_hp_get_string_from_object(
&obj->Package.Elements[i], string_buffer,
size);
if (strlen(string_buffer) > 1 ||
(strlen(string_buffer) == 1 &&
string_buffer[0] != ' ')) {
if (has_enums)
strlcat(outbuf, "/", outsize);
else
strlcat(outbuf, " (", outsize);
strlcat(outbuf, string_buffer, outsize);
has_enums = 1;
}
}
}
if (has_enums)
strlcat(outbuf, ")", outsize);
if (detail & ACPI_HP_CMI_DETAIL_FLAGS) {
strlcat(outbuf, obj->Package.Elements[3].Integer.Value?
" [ReadOnly]":"", outsize);
strlcat(outbuf, obj->Package.Elements[4].Integer.Value?
"":" [NOUI]", outsize);
strlcat(outbuf, obj->Package.Elements[5].Integer.Value?
" [RPP]":"", outsize);
}
*sequence = (UINT32) obj->Package.Elements[6].Integer.Value;
}
acpi_hp_free_buffer(&out);
return (0);
}
/*
* Convert given two digit hex string (hexin) to an UINT8 referenced
* by byteout.
* Return != 0 if the was a problem (invalid input)
*/
static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
{
unsigned int hi;
unsigned int lo;
hi = hexin[0];
lo = hexin[1];
if ('0' <= hi && hi <= '9')
hi -= '0';
else if ('A' <= hi && hi <= 'F')
hi -= ('A' - 10);
else if ('a' <= hi && hi <= 'f')
hi -= ('a' - 10);
else
return (1);
if ('0' <= lo && lo <= '9')
lo -= '0';
else if ('A' <= lo && lo <= 'F')
lo -= ('A' - 10);
else if ('a' <= lo && lo <= 'f')
lo -= ('a' - 10);
else
return (1);
*byteout = (hi << 4) + lo;
return (0);
}
static void
acpi_hp_hex_decode(char* buffer)
{
int i;
int length = strlen(buffer);
UINT8 *uin;
UINT8 uout;
if (((int)length/2)*2 == length || length < 10) return;
for (i = 0; i<length; ++i) {
if (!((i+1)%3)) {
if (buffer[i] != ' ')
return;
}
else
if (!((buffer[i] >= '0' && buffer[i] <= '9') ||
(buffer[i] >= 'A' && buffer[i] <= 'F')))
return;
}
for (i = 0; i<length; i += 3) {
uin = &buffer[i];
uout = 0;
acpi_hp_hex_to_int(uin, &uout);
buffer[i/3] = (char) uout;
}
buffer[(length+1)/3] = 0;
}
/*
* open hpcmi device
*/
static int
acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td)
{
struct acpi_hp_softc *sc;
int ret;
if (dev == NULL || dev->si_drv1 == NULL)
return (EBADF);
sc = dev->si_drv1;
ACPI_SERIAL_BEGIN(hp);
if (sc->hpcmi_open_pid != 0) {
ret = EBUSY;
}
else {
if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
== NULL) {
ret = ENXIO;
} else {
sc->hpcmi_open_pid = td->td_proc->p_pid;
sc->hpcmi_bufptr = 0;
ret = 0;
}
}
ACPI_SERIAL_END(hp);
return (ret);
}
/*
* close hpcmi device
*/
static int
acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td)
{
struct acpi_hp_softc *sc;
int ret;
if (dev == NULL || dev->si_drv1 == NULL)
return (EBADF);
sc = dev->si_drv1;
ACPI_SERIAL_BEGIN(hp);
if (sc->hpcmi_open_pid == 0) {
ret = EBADF;
}
else {
if (sc->hpcmi_bufptr != -1) {
sbuf_delete(&sc->hpcmi_sbuf);
sc->hpcmi_bufptr = -1;
}
sc->hpcmi_open_pid = 0;
ret = 0;
}
ACPI_SERIAL_END(hp);
return (ret);
}
/*
* Read from hpcmi bios information
*/
static int
acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag)
{
struct acpi_hp_softc *sc;
int pos, i, l, ret;
UINT8 instance;
UINT32 sequence;
int linesize = 1025;
char line[linesize];
if (dev == NULL || dev->si_drv1 == NULL)
return (EBADF);
sc = dev->si_drv1;
ACPI_SERIAL_BEGIN(hp);
if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid
|| sc->hpcmi_bufptr == -1) {
ret = EBADF;
}
else {
if (!sbuf_done(&sc->hpcmi_sbuf)) {
if (sc->cmi_order_size < 0) {
sc->cmi_order_size = 0;
for (instance = 0; instance < 128;
++instance) {
if (acpi_hp_get_cmi_block(sc->wmi_dev,
ACPI_HP_WMI_CMI_GUID, instance,
line, linesize, &sequence,
sc->cmi_detail)) {
instance = 128;
}
else {
pos = sc->cmi_order_size;
for (i=0;
i<sc->cmi_order_size && i<127;
++i) {
if (sc->cmi_order[i].sequence > sequence) {
pos = i;
break;
}
}
for (i=sc->cmi_order_size;
i>pos;
--i) {
sc->cmi_order[i].sequence =
sc->cmi_order[i-1].sequence;
sc->cmi_order[i].instance =
sc->cmi_order[i-1].instance;
}
sc->cmi_order[pos].sequence =
sequence;
sc->cmi_order[pos].instance =
instance;
sc->cmi_order_size++;
}
}
}
for (i=0; i<sc->cmi_order_size; ++i) {
if (!acpi_hp_get_cmi_block(sc->wmi_dev,
ACPI_HP_WMI_CMI_GUID,
sc->cmi_order[i].instance, line, linesize,
&sequence, sc->cmi_detail)) {
sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line);
}
}
sbuf_finish(&sc->hpcmi_sbuf);
}
if (sbuf_len(&sc->hpcmi_sbuf) <= 0) {
sbuf_delete(&sc->hpcmi_sbuf);
sc->hpcmi_bufptr = -1;
sc->hpcmi_open_pid = 0;
ret = ENOMEM;
} else {
l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) -
sc->hpcmi_bufptr);
ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) +
sc->hpcmi_bufptr, l, buf) : 0;
sc->hpcmi_bufptr += l;
}
}
ACPI_SERIAL_END(hp);
return (ret);
}
--------------000302080806090206000000--
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