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Based on 3 normalized pattern(s): 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 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] 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 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
513 lines
13 KiB
C
513 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* osi.c - _OSI implementation
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*
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* Copyright (C) 2016 Intel Corporation
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* Author: Lv Zheng <lv.zheng@intel.com>
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*/
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/* Uncomment next line to get verbose printout */
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/* #define DEBUG */
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#define pr_fmt(fmt) "ACPI: " fmt
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/acpi.h>
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#include <linux/dmi.h>
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#include <linux/platform_data/x86/apple.h>
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#include "internal.h"
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#define OSI_STRING_LENGTH_MAX 64
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#define OSI_STRING_ENTRIES_MAX 16
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struct acpi_osi_entry {
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char string[OSI_STRING_LENGTH_MAX];
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bool enable;
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};
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static struct acpi_osi_config {
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u8 default_disabling;
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unsigned int linux_enable:1;
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unsigned int linux_dmi:1;
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unsigned int linux_cmdline:1;
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unsigned int darwin_enable:1;
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unsigned int darwin_dmi:1;
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unsigned int darwin_cmdline:1;
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} osi_config;
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static struct acpi_osi_config osi_config;
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static struct acpi_osi_entry
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osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
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{"Module Device", true},
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{"Processor Device", true},
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{"3.0 _SCP Extensions", true},
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{"Processor Aggregator Device", true},
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/*
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* Linux-Dell-Video is used by BIOS to disable RTD3 for NVidia graphics
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* cards as RTD3 is not supported by drivers now. Systems with NVidia
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* cards will hang without RTD3 disabled.
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*
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* Once NVidia drivers officially support RTD3, this _OSI strings can
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* be removed if both new and old graphics cards are supported.
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*/
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{"Linux-Dell-Video", true},
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/*
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* Linux-Lenovo-NV-HDMI-Audio is used by BIOS to power on NVidia's HDMI
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* audio device which is turned off for power-saving in Windows OS.
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* This power management feature observed on some Lenovo Thinkpad
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* systems which will not be able to output audio via HDMI without
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* a BIOS workaround.
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*/
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{"Linux-Lenovo-NV-HDMI-Audio", true},
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/*
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* Linux-HPI-Hybrid-Graphics is used by BIOS to enable dGPU to
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* output video directly to external monitors on HP Inc. mobile
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* workstations as Nvidia and AMD VGA drivers provide limited
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* hybrid graphics supports.
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*/
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{"Linux-HPI-Hybrid-Graphics", true},
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};
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static u32 acpi_osi_handler(acpi_string interface, u32 supported)
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{
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if (!strcmp("Linux", interface)) {
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pr_notice_once(FW_BUG
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"BIOS _OSI(Linux) query %s%s\n",
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osi_config.linux_enable ? "honored" : "ignored",
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osi_config.linux_cmdline ? " via cmdline" :
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osi_config.linux_dmi ? " via DMI" : "");
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}
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if (!strcmp("Darwin", interface)) {
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pr_notice_once(
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"BIOS _OSI(Darwin) query %s%s\n",
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osi_config.darwin_enable ? "honored" : "ignored",
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osi_config.darwin_cmdline ? " via cmdline" :
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osi_config.darwin_dmi ? " via DMI" : "");
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}
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return supported;
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}
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void __init acpi_osi_setup(char *str)
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{
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struct acpi_osi_entry *osi;
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bool enable = true;
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int i;
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if (!acpi_gbl_create_osi_method)
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return;
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if (str == NULL || *str == '\0') {
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pr_info("_OSI method disabled\n");
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acpi_gbl_create_osi_method = FALSE;
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return;
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}
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if (*str == '!') {
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str++;
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if (*str == '\0') {
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/* Do not override acpi_osi=!* */
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if (!osi_config.default_disabling)
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osi_config.default_disabling =
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ACPI_DISABLE_ALL_VENDOR_STRINGS;
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return;
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} else if (*str == '*') {
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osi_config.default_disabling = ACPI_DISABLE_ALL_STRINGS;
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for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
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osi = &osi_setup_entries[i];
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osi->enable = false;
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}
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return;
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} else if (*str == '!') {
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osi_config.default_disabling = 0;
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return;
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}
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enable = false;
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}
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for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
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osi = &osi_setup_entries[i];
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if (!strcmp(osi->string, str)) {
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osi->enable = enable;
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break;
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} else if (osi->string[0] == '\0') {
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osi->enable = enable;
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strncpy(osi->string, str, OSI_STRING_LENGTH_MAX);
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break;
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}
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}
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}
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static void __init __acpi_osi_setup_darwin(bool enable)
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{
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osi_config.darwin_enable = !!enable;
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if (enable) {
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acpi_osi_setup("!");
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acpi_osi_setup("Darwin");
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} else {
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acpi_osi_setup("!!");
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acpi_osi_setup("!Darwin");
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}
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}
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static void __init acpi_osi_setup_darwin(bool enable)
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{
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/* Override acpi_osi_dmi_blacklisted() */
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osi_config.darwin_dmi = 0;
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osi_config.darwin_cmdline = 1;
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__acpi_osi_setup_darwin(enable);
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}
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/*
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* The story of _OSI(Linux)
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*
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* From pre-history through Linux-2.6.22, Linux responded TRUE upon a BIOS
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* OSI(Linux) query.
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*
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* Unfortunately, reference BIOS writers got wind of this and put
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* OSI(Linux) in their example code, quickly exposing this string as
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* ill-conceived and opening the door to an un-bounded number of BIOS
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* incompatibilities.
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*
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* For example, OSI(Linux) was used on resume to re-POST a video card on
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* one system, because Linux at that time could not do a speedy restore in
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* its native driver. But then upon gaining quick native restore
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* capability, Linux has no way to tell the BIOS to skip the time-consuming
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* POST -- putting Linux at a permanent performance disadvantage. On
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* another system, the BIOS writer used OSI(Linux) to infer native OS
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* support for IPMI! On other systems, OSI(Linux) simply got in the way of
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* Linux claiming to be compatible with other operating systems, exposing
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* BIOS issues such as skipped device initialization.
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*
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* So "Linux" turned out to be a really poor chose of OSI string, and from
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* Linux-2.6.23 onward we respond FALSE.
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*
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* BIOS writers should NOT query _OSI(Linux) on future systems. Linux will
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* complain on the console when it sees it, and return FALSE. To get Linux
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* to return TRUE for your system will require a kernel source update to
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* add a DMI entry, or boot with "acpi_osi=Linux"
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*/
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static void __init __acpi_osi_setup_linux(bool enable)
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{
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osi_config.linux_enable = !!enable;
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if (enable)
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acpi_osi_setup("Linux");
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else
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acpi_osi_setup("!Linux");
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}
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static void __init acpi_osi_setup_linux(bool enable)
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{
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/* Override acpi_osi_dmi_blacklisted() */
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osi_config.linux_dmi = 0;
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osi_config.linux_cmdline = 1;
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__acpi_osi_setup_linux(enable);
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}
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/*
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* Modify the list of "OS Interfaces" reported to BIOS via _OSI
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*
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* empty string disables _OSI
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* string starting with '!' disables that string
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* otherwise string is added to list, augmenting built-in strings
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*/
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static void __init acpi_osi_setup_late(void)
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{
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struct acpi_osi_entry *osi;
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char *str;
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int i;
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acpi_status status;
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if (osi_config.default_disabling) {
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status = acpi_update_interfaces(osi_config.default_disabling);
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if (ACPI_SUCCESS(status))
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pr_info("Disabled all _OSI OS vendors%s\n",
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osi_config.default_disabling ==
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ACPI_DISABLE_ALL_STRINGS ?
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" and feature groups" : "");
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}
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for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
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osi = &osi_setup_entries[i];
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str = osi->string;
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if (*str == '\0')
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break;
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if (osi->enable) {
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status = acpi_install_interface(str);
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if (ACPI_SUCCESS(status))
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pr_info("Added _OSI(%s)\n", str);
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} else {
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status = acpi_remove_interface(str);
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if (ACPI_SUCCESS(status))
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pr_info("Deleted _OSI(%s)\n", str);
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}
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}
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}
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static int __init osi_setup(char *str)
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{
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if (str && !strcmp("Linux", str))
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acpi_osi_setup_linux(true);
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else if (str && !strcmp("!Linux", str))
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acpi_osi_setup_linux(false);
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else if (str && !strcmp("Darwin", str))
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acpi_osi_setup_darwin(true);
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else if (str && !strcmp("!Darwin", str))
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acpi_osi_setup_darwin(false);
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else
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acpi_osi_setup(str);
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return 1;
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}
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__setup("acpi_osi=", osi_setup);
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bool acpi_osi_is_win8(void)
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{
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return acpi_gbl_osi_data >= ACPI_OSI_WIN_8;
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}
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EXPORT_SYMBOL(acpi_osi_is_win8);
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static void __init acpi_osi_dmi_darwin(void)
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{
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pr_notice("DMI detected to setup _OSI(\"Darwin\"): Apple hardware\n");
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osi_config.darwin_dmi = 1;
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__acpi_osi_setup_darwin(true);
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}
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static void __init acpi_osi_dmi_linux(bool enable,
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const struct dmi_system_id *d)
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{
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pr_notice("DMI detected to setup _OSI(\"Linux\"): %s\n", d->ident);
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osi_config.linux_dmi = 1;
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__acpi_osi_setup_linux(enable);
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}
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static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
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{
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acpi_osi_dmi_linux(true, d);
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return 0;
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}
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static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
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{
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pr_notice("DMI detected: %s\n", d->ident);
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acpi_osi_setup("!Windows 2006");
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acpi_osi_setup("!Windows 2006 SP1");
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acpi_osi_setup("!Windows 2006 SP2");
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return 0;
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}
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static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
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{
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pr_notice("DMI detected: %s\n", d->ident);
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acpi_osi_setup("!Windows 2009");
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return 0;
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}
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static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
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{
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pr_notice("DMI detected: %s\n", d->ident);
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acpi_osi_setup("!Windows 2012");
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return 0;
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}
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/*
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* Linux default _OSI response behavior is determined by this DMI table.
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*
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* Note that _OSI("Linux")/_OSI("Darwin") determined here can be overridden
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* by acpi_osi=!Linux/acpi_osi=!Darwin command line options.
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*/
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static const struct dmi_system_id acpi_osi_dmi_table[] __initconst = {
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{
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.callback = dmi_disable_osi_vista,
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.ident = "Fujitsu Siemens",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
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DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
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},
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},
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{
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/*
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* There have a NVIF method in MSI GX723 DSDT need call by Nvidia
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* driver (e.g. nouveau) when user press brightness hotkey.
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* Currently, nouveau driver didn't do the job and it causes there
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* have a infinite while loop in DSDT when user press hotkey.
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* We add MSI GX723's dmi information to this table for workaround
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* this issue.
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* Will remove MSI GX723 from the table after nouveau grows support.
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*/
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.callback = dmi_disable_osi_vista,
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.ident = "MSI GX723",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
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DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
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},
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},
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{
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.callback = dmi_disable_osi_vista,
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.ident = "Sony VGN-NS10J_S",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
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},
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},
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{
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.callback = dmi_disable_osi_vista,
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.ident = "Sony VGN-SR290J",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
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},
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},
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{
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.callback = dmi_disable_osi_vista,
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.ident = "VGN-NS50B_L",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
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},
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},
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{
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.callback = dmi_disable_osi_vista,
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.ident = "VGN-SR19XN",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR19XN"),
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},
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},
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{
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.callback = dmi_disable_osi_vista,
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.ident = "Toshiba Satellite L355",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
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},
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},
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{
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.callback = dmi_disable_osi_win7,
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.ident = "ASUS K50IJ",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
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},
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},
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{
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.callback = dmi_disable_osi_vista,
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.ident = "Toshiba P305D",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
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},
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},
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{
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.callback = dmi_disable_osi_vista,
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.ident = "Toshiba NB100",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
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DMI_MATCH(DMI_PRODUCT_NAME, "NB100"),
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},
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},
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/*
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* The wireless hotkey does not work on those machines when
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* returning true for _OSI("Windows 2012")
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*/
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{
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.callback = dmi_disable_osi_win8,
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.ident = "Dell Inspiron 7737",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7737"),
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},
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},
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{
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.callback = dmi_disable_osi_win8,
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.ident = "Dell Inspiron 7537",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
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},
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},
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{
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.callback = dmi_disable_osi_win8,
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.ident = "Dell Inspiron 5437",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5437"),
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},
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},
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{
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.callback = dmi_disable_osi_win8,
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.ident = "Dell Inspiron 3437",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3437"),
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},
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},
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{
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.callback = dmi_disable_osi_win8,
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.ident = "Dell Vostro 3446",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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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;
|
|
}
|