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94fb9823a7
Since v3.7 the acpi backlight driver doesn't work correctly in several
machines because ACPI code has different code for Windows 8, and the
rest.
The commit ea45ea7 (in v3.11-rc2) tried to fix this problem by using the
intel backlight driver, however it introduced several other issues in
different machines.
This patch fixes both regressions by blacklisting the win8 OSI, so we
are back to v3.6 behavior, and it should remain that way until the intel
backlight driver is fixed.
Since v3.7, users have been forced to fix the initial regression by
modifying the boot arguments (acpi_osi="!Windows 2012").
Once the Intel backlight driver works correctly for all machines, this
blacklist can be removed and that driver can be used instead.
References: https://bugzilla.kernel.org/show_bug.cgi?id=60682
Reported-by: Danny Baumann <dannybaumann@web.de>
Reported-by: Philipp Richter <richterphilipp.pops@gmail.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
364 lines
9.6 KiB
C
364 lines
9.6 KiB
C
/*
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* blacklist.c
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*
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* Check to see if the given machine has a known bad ACPI BIOS
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* or if the BIOS is too old.
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* Check given machine against acpi_osi_dmi_table[].
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*
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* Copyright (C) 2004 Len Brown <len.brown@intel.com>
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* Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/acpi.h>
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#include <acpi/acpi_bus.h>
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#include <linux/dmi.h>
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#include "internal.h"
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enum acpi_blacklist_predicates {
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all_versions,
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less_than_or_equal,
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equal,
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greater_than_or_equal,
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};
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struct acpi_blacklist_item {
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char oem_id[7];
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char oem_table_id[9];
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u32 oem_revision;
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char *table;
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enum acpi_blacklist_predicates oem_revision_predicate;
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char *reason;
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u32 is_critical_error;
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};
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static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
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/*
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* POLICY: If *anything* doesn't work, put it on the blacklist.
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* If they are critical errors, mark it critical, and abort driver load.
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*/
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static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
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/* Compaq Presario 1700 */
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{"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
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"Multiple problems", 1},
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/* Sony FX120, FX140, FX150? */
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{"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
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"ACPI driver problem", 1},
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/* Compaq Presario 800, Insyde BIOS */
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{"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
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"Does not use _REG to protect EC OpRegions", 1},
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/* IBM 600E - _ADR should return 7, but it returns 1 */
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{"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
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"Incorrect _ADR", 1},
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{""}
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};
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#if CONFIG_ACPI_BLACKLIST_YEAR
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static int __init blacklist_by_year(void)
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{
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int year;
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/* Doesn't exist? Likely an old system */
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if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {
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printk(KERN_ERR PREFIX "no DMI BIOS year, "
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"acpi=force is required to enable ACPI\n" );
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return 1;
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}
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/* 0? Likely a buggy new BIOS */
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if (year == 0) {
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printk(KERN_ERR PREFIX "DMI BIOS year==0, "
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"assuming ACPI-capable machine\n" );
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return 0;
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}
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if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
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printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
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"acpi=force is required to enable ACPI\n",
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year, CONFIG_ACPI_BLACKLIST_YEAR);
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return 1;
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}
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return 0;
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}
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#else
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static inline int blacklist_by_year(void)
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{
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return 0;
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}
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#endif
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int __init acpi_blacklisted(void)
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{
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int i = 0;
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int blacklisted = 0;
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struct acpi_table_header table_header;
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while (acpi_blacklist[i].oem_id[0] != '\0') {
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if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
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i++;
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continue;
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}
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if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
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i++;
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continue;
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}
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if (strncmp
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(acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
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8)) {
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i++;
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continue;
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}
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if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
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|| (acpi_blacklist[i].oem_revision_predicate ==
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less_than_or_equal
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&& table_header.oem_revision <=
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acpi_blacklist[i].oem_revision)
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|| (acpi_blacklist[i].oem_revision_predicate ==
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greater_than_or_equal
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&& table_header.oem_revision >=
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acpi_blacklist[i].oem_revision)
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|| (acpi_blacklist[i].oem_revision_predicate == equal
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&& table_header.oem_revision ==
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acpi_blacklist[i].oem_revision)) {
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printk(KERN_ERR PREFIX
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"Vendor \"%6.6s\" System \"%8.8s\" "
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"Revision 0x%x has a known ACPI BIOS problem.\n",
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acpi_blacklist[i].oem_id,
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acpi_blacklist[i].oem_table_id,
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acpi_blacklist[i].oem_revision);
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printk(KERN_ERR PREFIX
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"Reason: %s. This is a %s error\n",
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acpi_blacklist[i].reason,
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(acpi_blacklist[i].
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is_critical_error ? "non-recoverable" :
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"recoverable"));
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blacklisted = acpi_blacklist[i].is_critical_error;
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break;
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} else {
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i++;
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}
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}
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blacklisted += blacklist_by_year();
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dmi_check_system(acpi_osi_dmi_table);
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return blacklisted;
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}
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#ifdef CONFIG_DMI
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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_dmi_osi_linux(1, d); /* enable */
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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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printk(KERN_NOTICE PREFIX "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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printk(KERN_NOTICE PREFIX "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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printk(KERN_NOTICE PREFIX "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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static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
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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 = "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_win8,
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.ident = "ASUS Zenbook Prime UX31A",
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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, "UX31A"),
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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 15R SE",
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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 7520"),
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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 = "Lenovo ThinkPad Edge E530",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "3259A2G"),
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},
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},
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/*
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* BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
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* Linux ignores it, except for the machines enumerated below.
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*/
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/*
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* Lenovo has a mix of systems OSI(Linux) situations
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* and thus we can not wildcard the vendor.
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*
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* _OSI(Linux) helps sound
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* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
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* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
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* T400, T500
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* _OSI(Linux) has Linux specific hooks
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* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
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* _OSI(Linux) is a NOP:
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* DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
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* DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
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*/
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{
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.callback = dmi_enable_osi_linux,
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.ident = "Lenovo ThinkPad R61",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
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},
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},
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{
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.callback = dmi_enable_osi_linux,
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.ident = "Lenovo ThinkPad T61",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
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},
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},
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{
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.callback = dmi_enable_osi_linux,
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.ident = "Lenovo ThinkPad X61",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
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},
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},
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{
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.callback = dmi_enable_osi_linux,
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.ident = "Lenovo ThinkPad T400",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
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},
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},
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{
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.callback = dmi_enable_osi_linux,
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.ident = "Lenovo ThinkPad T500",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
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},
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},
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{}
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};
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#endif /* CONFIG_DMI */
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