520 строки
13 KiB
C
520 строки
13 KiB
C
/*
|
|
* osi.c - _OSI implementation
|
|
*
|
|
* Copyright (C) 2016 Intel Corporation
|
|
* Author: Lv Zheng <lv.zheng@intel.com>
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*/
|
|
|
|
/* Uncomment next line to get verbose printout */
|
|
/* #define DEBUG */
|
|
#define pr_fmt(fmt) "ACPI: " fmt
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/acpi.h>
|
|
#include <linux/dmi.h>
|
|
#include <linux/platform_data/x86/apple.h>
|
|
|
|
#include "internal.h"
|
|
|
|
|
|
#define OSI_STRING_LENGTH_MAX 64
|
|
#define OSI_STRING_ENTRIES_MAX 16
|
|
|
|
struct acpi_osi_entry {
|
|
char string[OSI_STRING_LENGTH_MAX];
|
|
bool enable;
|
|
};
|
|
|
|
static struct acpi_osi_config {
|
|
u8 default_disabling;
|
|
unsigned int linux_enable:1;
|
|
unsigned int linux_dmi:1;
|
|
unsigned int linux_cmdline:1;
|
|
unsigned int darwin_enable:1;
|
|
unsigned int darwin_dmi:1;
|
|
unsigned int darwin_cmdline:1;
|
|
} osi_config;
|
|
|
|
static struct acpi_osi_config osi_config;
|
|
static struct acpi_osi_entry
|
|
osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
|
|
{"Module Device", true},
|
|
{"Processor Device", true},
|
|
{"3.0 _SCP Extensions", true},
|
|
{"Processor Aggregator Device", true},
|
|
/*
|
|
* Linux-Dell-Video is used by BIOS to disable RTD3 for NVidia graphics
|
|
* cards as RTD3 is not supported by drivers now. Systems with NVidia
|
|
* cards will hang without RTD3 disabled.
|
|
*
|
|
* Once NVidia drivers officially support RTD3, this _OSI strings can
|
|
* be removed if both new and old graphics cards are supported.
|
|
*/
|
|
{"Linux-Dell-Video", true},
|
|
/*
|
|
* Linux-Lenovo-NV-HDMI-Audio is used by BIOS to power on NVidia's HDMI
|
|
* audio device which is turned off for power-saving in Windows OS.
|
|
* This power management feature observed on some Lenovo Thinkpad
|
|
* systems which will not be able to output audio via HDMI without
|
|
* a BIOS workaround.
|
|
*/
|
|
{"Linux-Lenovo-NV-HDMI-Audio", true},
|
|
};
|
|
|
|
static u32 acpi_osi_handler(acpi_string interface, u32 supported)
|
|
{
|
|
if (!strcmp("Linux", interface)) {
|
|
pr_notice_once(FW_BUG
|
|
"BIOS _OSI(Linux) query %s%s\n",
|
|
osi_config.linux_enable ? "honored" : "ignored",
|
|
osi_config.linux_cmdline ? " via cmdline" :
|
|
osi_config.linux_dmi ? " via DMI" : "");
|
|
}
|
|
if (!strcmp("Darwin", interface)) {
|
|
pr_notice_once(
|
|
"BIOS _OSI(Darwin) query %s%s\n",
|
|
osi_config.darwin_enable ? "honored" : "ignored",
|
|
osi_config.darwin_cmdline ? " via cmdline" :
|
|
osi_config.darwin_dmi ? " via DMI" : "");
|
|
}
|
|
|
|
return supported;
|
|
}
|
|
|
|
void __init acpi_osi_setup(char *str)
|
|
{
|
|
struct acpi_osi_entry *osi;
|
|
bool enable = true;
|
|
int i;
|
|
|
|
if (!acpi_gbl_create_osi_method)
|
|
return;
|
|
|
|
if (str == NULL || *str == '\0') {
|
|
pr_info("_OSI method disabled\n");
|
|
acpi_gbl_create_osi_method = FALSE;
|
|
return;
|
|
}
|
|
|
|
if (*str == '!') {
|
|
str++;
|
|
if (*str == '\0') {
|
|
/* Do not override acpi_osi=!* */
|
|
if (!osi_config.default_disabling)
|
|
osi_config.default_disabling =
|
|
ACPI_DISABLE_ALL_VENDOR_STRINGS;
|
|
return;
|
|
} else if (*str == '*') {
|
|
osi_config.default_disabling = ACPI_DISABLE_ALL_STRINGS;
|
|
for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
|
|
osi = &osi_setup_entries[i];
|
|
osi->enable = false;
|
|
}
|
|
return;
|
|
} else if (*str == '!') {
|
|
osi_config.default_disabling = 0;
|
|
return;
|
|
}
|
|
enable = false;
|
|
}
|
|
|
|
for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
|
|
osi = &osi_setup_entries[i];
|
|
if (!strcmp(osi->string, str)) {
|
|
osi->enable = enable;
|
|
break;
|
|
} else if (osi->string[0] == '\0') {
|
|
osi->enable = enable;
|
|
strncpy(osi->string, str, OSI_STRING_LENGTH_MAX);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void __init __acpi_osi_setup_darwin(bool enable)
|
|
{
|
|
osi_config.darwin_enable = !!enable;
|
|
if (enable) {
|
|
acpi_osi_setup("!");
|
|
acpi_osi_setup("Darwin");
|
|
} else {
|
|
acpi_osi_setup("!!");
|
|
acpi_osi_setup("!Darwin");
|
|
}
|
|
}
|
|
|
|
static void __init acpi_osi_setup_darwin(bool enable)
|
|
{
|
|
/* Override acpi_osi_dmi_blacklisted() */
|
|
osi_config.darwin_dmi = 0;
|
|
osi_config.darwin_cmdline = 1;
|
|
__acpi_osi_setup_darwin(enable);
|
|
}
|
|
|
|
/*
|
|
* The story of _OSI(Linux)
|
|
*
|
|
* From pre-history through Linux-2.6.22, Linux responded TRUE upon a BIOS
|
|
* OSI(Linux) query.
|
|
*
|
|
* Unfortunately, reference BIOS writers got wind of this and put
|
|
* OSI(Linux) in their example code, quickly exposing this string as
|
|
* ill-conceived and opening the door to an un-bounded number of BIOS
|
|
* incompatibilities.
|
|
*
|
|
* For example, OSI(Linux) was used on resume to re-POST a video card on
|
|
* one system, because Linux at that time could not do a speedy restore in
|
|
* its native driver. But then upon gaining quick native restore
|
|
* capability, Linux has no way to tell the BIOS to skip the time-consuming
|
|
* POST -- putting Linux at a permanent performance disadvantage. On
|
|
* another system, the BIOS writer used OSI(Linux) to infer native OS
|
|
* support for IPMI! On other systems, OSI(Linux) simply got in the way of
|
|
* Linux claiming to be compatible with other operating systems, exposing
|
|
* BIOS issues such as skipped device initialization.
|
|
*
|
|
* So "Linux" turned out to be a really poor chose of OSI string, and from
|
|
* Linux-2.6.23 onward we respond FALSE.
|
|
*
|
|
* BIOS writers should NOT query _OSI(Linux) on future systems. Linux will
|
|
* complain on the console when it sees it, and return FALSE. To get Linux
|
|
* to return TRUE for your system will require a kernel source update to
|
|
* add a DMI entry, or boot with "acpi_osi=Linux"
|
|
*/
|
|
static void __init __acpi_osi_setup_linux(bool enable)
|
|
{
|
|
osi_config.linux_enable = !!enable;
|
|
if (enable)
|
|
acpi_osi_setup("Linux");
|
|
else
|
|
acpi_osi_setup("!Linux");
|
|
}
|
|
|
|
static void __init acpi_osi_setup_linux(bool enable)
|
|
{
|
|
/* Override acpi_osi_dmi_blacklisted() */
|
|
osi_config.linux_dmi = 0;
|
|
osi_config.linux_cmdline = 1;
|
|
__acpi_osi_setup_linux(enable);
|
|
}
|
|
|
|
/*
|
|
* Modify the list of "OS Interfaces" reported to BIOS via _OSI
|
|
*
|
|
* empty string disables _OSI
|
|
* string starting with '!' disables that string
|
|
* otherwise string is added to list, augmenting built-in strings
|
|
*/
|
|
static void __init acpi_osi_setup_late(void)
|
|
{
|
|
struct acpi_osi_entry *osi;
|
|
char *str;
|
|
int i;
|
|
acpi_status status;
|
|
|
|
if (osi_config.default_disabling) {
|
|
status = acpi_update_interfaces(osi_config.default_disabling);
|
|
if (ACPI_SUCCESS(status))
|
|
pr_info("Disabled all _OSI OS vendors%s\n",
|
|
osi_config.default_disabling ==
|
|
ACPI_DISABLE_ALL_STRINGS ?
|
|
" and feature groups" : "");
|
|
}
|
|
|
|
for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
|
|
osi = &osi_setup_entries[i];
|
|
str = osi->string;
|
|
if (*str == '\0')
|
|
break;
|
|
if (osi->enable) {
|
|
status = acpi_install_interface(str);
|
|
if (ACPI_SUCCESS(status))
|
|
pr_info("Added _OSI(%s)\n", str);
|
|
} else {
|
|
status = acpi_remove_interface(str);
|
|
if (ACPI_SUCCESS(status))
|
|
pr_info("Deleted _OSI(%s)\n", str);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int __init osi_setup(char *str)
|
|
{
|
|
if (str && !strcmp("Linux", str))
|
|
acpi_osi_setup_linux(true);
|
|
else if (str && !strcmp("!Linux", str))
|
|
acpi_osi_setup_linux(false);
|
|
else if (str && !strcmp("Darwin", str))
|
|
acpi_osi_setup_darwin(true);
|
|
else if (str && !strcmp("!Darwin", str))
|
|
acpi_osi_setup_darwin(false);
|
|
else
|
|
acpi_osi_setup(str);
|
|
|
|
return 1;
|
|
}
|
|
__setup("acpi_osi=", osi_setup);
|
|
|
|
bool acpi_osi_is_win8(void)
|
|
{
|
|
return acpi_gbl_osi_data >= ACPI_OSI_WIN_8;
|
|
}
|
|
EXPORT_SYMBOL(acpi_osi_is_win8);
|
|
|
|
static void __init acpi_osi_dmi_darwin(void)
|
|
{
|
|
pr_notice("DMI detected to setup _OSI(\"Darwin\"): Apple hardware\n");
|
|
osi_config.darwin_dmi = 1;
|
|
__acpi_osi_setup_darwin(true);
|
|
}
|
|
|
|
static void __init acpi_osi_dmi_linux(bool enable,
|
|
const struct dmi_system_id *d)
|
|
{
|
|
pr_notice("DMI detected to setup _OSI(\"Linux\"): %s\n", d->ident);
|
|
osi_config.linux_dmi = 1;
|
|
__acpi_osi_setup_linux(enable);
|
|
}
|
|
|
|
static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
|
|
{
|
|
acpi_osi_dmi_linux(true, d);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
|
|
{
|
|
pr_notice("DMI detected: %s\n", d->ident);
|
|
acpi_osi_setup("!Windows 2006");
|
|
acpi_osi_setup("!Windows 2006 SP1");
|
|
acpi_osi_setup("!Windows 2006 SP2");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
|
|
{
|
|
pr_notice("DMI detected: %s\n", d->ident);
|
|
acpi_osi_setup("!Windows 2009");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
|
|
{
|
|
pr_notice("DMI detected: %s\n", d->ident);
|
|
acpi_osi_setup("!Windows 2012");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Linux default _OSI response behavior is determined by this DMI table.
|
|
*
|
|
* Note that _OSI("Linux")/_OSI("Darwin") determined here can be overridden
|
|
* by acpi_osi=!Linux/acpi_osi=!Darwin command line options.
|
|
*/
|
|
static const struct dmi_system_id acpi_osi_dmi_table[] __initconst = {
|
|
{
|
|
.callback = dmi_disable_osi_vista,
|
|
.ident = "Fujitsu Siemens",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
|
|
},
|
|
},
|
|
{
|
|
/*
|
|
* There have a NVIF method in MSI GX723 DSDT need call by Nvidia
|
|
* driver (e.g. nouveau) when user press brightness hotkey.
|
|
* Currently, nouveau driver didn't do the job and it causes there
|
|
* have a infinite while loop in DSDT when user press hotkey.
|
|
* We add MSI GX723's dmi information to this table for workaround
|
|
* this issue.
|
|
* Will remove MSI GX723 from the table after nouveau grows support.
|
|
*/
|
|
.callback = dmi_disable_osi_vista,
|
|
.ident = "MSI GX723",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_vista,
|
|
.ident = "Sony VGN-NS10J_S",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_vista,
|
|
.ident = "Sony VGN-SR290J",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_vista,
|
|
.ident = "VGN-NS50B_L",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_vista,
|
|
.ident = "VGN-SR19XN",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR19XN"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_vista,
|
|
.ident = "Toshiba Satellite L355",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
|
|
DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_win7,
|
|
.ident = "ASUS K50IJ",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_vista,
|
|
.ident = "Toshiba P305D",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_vista,
|
|
.ident = "Toshiba NB100",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "NB100"),
|
|
},
|
|
},
|
|
|
|
/*
|
|
* The wireless hotkey does not work on those machines when
|
|
* returning true for _OSI("Windows 2012")
|
|
*/
|
|
{
|
|
.callback = dmi_disable_osi_win8,
|
|
.ident = "Dell Inspiron 7737",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7737"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_win8,
|
|
.ident = "Dell Inspiron 7537",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_win8,
|
|
.ident = "Dell Inspiron 5437",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5437"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_win8,
|
|
.ident = "Dell Inspiron 3437",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3437"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_win8,
|
|
.ident = "Dell Vostro 3446",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3446"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_disable_osi_win8,
|
|
.ident = "Dell Vostro 3546",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3546"),
|
|
},
|
|
},
|
|
|
|
/*
|
|
* BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
|
|
* Linux ignores it, except for the machines enumerated below.
|
|
*/
|
|
|
|
/*
|
|
* Without this this EEEpc exports a non working WMI interface, with
|
|
* this it exports a working "good old" eeepc_laptop interface, fixing
|
|
* both brightness control, and rfkill not working.
|
|
*/
|
|
{
|
|
.callback = dmi_enable_osi_linux,
|
|
.ident = "Asus EEE PC 1015PX",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"),
|
|
},
|
|
},
|
|
{}
|
|
};
|
|
|
|
static __init void acpi_osi_dmi_blacklisted(void)
|
|
{
|
|
dmi_check_system(acpi_osi_dmi_table);
|
|
|
|
/* Enable _OSI("Darwin") for Apple platforms. */
|
|
if (x86_apple_machine)
|
|
acpi_osi_dmi_darwin();
|
|
}
|
|
|
|
int __init early_acpi_osi_init(void)
|
|
{
|
|
acpi_osi_dmi_blacklisted();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int __init acpi_osi_init(void)
|
|
{
|
|
acpi_install_interface_handler(acpi_osi_handler);
|
|
acpi_osi_setup_late();
|
|
|
|
return 0;
|
|
}
|