drivers/acpi/blacklist.c - kernel/msm-4.19 - Gitiles

 /*
  *  blacklist.c
  *
  *  Check to see if the given machine has a known bad ACPI BIOS
  *  or if the BIOS is too old.
  *  Check given machine against acpi_osi_dmi_table[].
  *
  *  Copyright (C) 2004 Len Brown <len.brown@intel.com>
  *  Copyright (C) 2002 Andy Grover <andrew.grover@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.
  *
  *  You should have received a copy of the GNU General Public License along
  *  with this program; if not, write to the Free Software Foundation, Inc.,
  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */

 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/acpi.h>
 #include <acpi/acpi_bus.h>
 #include <linux/dmi.h>

 enum acpi_blacklist_predicates {
 	all_versions,
 	less_than_or_equal,
 	equal,
 	greater_than_or_equal,
 };

 struct acpi_blacklist_item {
 	char oem_id[7];
 	char oem_table_id[9];
 	u32 oem_revision;
 	char *table;
 	enum acpi_blacklist_predicates oem_revision_predicate;
 	char *reason;
 	u32 is_critical_error;
 };

 static struct dmi_system_id acpi_osi_dmi_table[] __initdata;

 /*
  * POLICY: If *anything* doesn't work, put it on the blacklist.
  *	   If they are critical errors, mark it critical, and abort driver load.
  */
 static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
 	/* Compaq Presario 1700 */
 	{"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
 	 "Multiple problems", 1},
 	/* Sony FX120, FX140, FX150? */
 	{"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
 	 "ACPI driver problem", 1},
 	/* Compaq Presario 800, Insyde BIOS */
 	{"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
 	 "Does not use _REG to protect EC OpRegions", 1},
 	/* IBM 600E - _ADR should return 7, but it returns 1 */
 	{"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
 	 "Incorrect _ADR", 1},
 	{"ASUS\0\0", "P2B-S   ", 0, ACPI_SIG_DSDT, all_versions,
 	 "Bogus PCI routing", 1},

 	{""}
 };

 #if	CONFIG_ACPI_BLACKLIST_YEAR

 static int __init blacklist_by_year(void)
 {
 	int year = dmi_get_year(DMI_BIOS_DATE);
 	/* Doesn't exist? Likely an old system */
 	if (year == -1) {
 		printk(KERN_ERR PREFIX "no DMI BIOS year, "
 			"acpi=force is required to enable ACPI\n" );
 		return 1;
 	}
 	/* 0? Likely a buggy new BIOS */
 	if (year == 0) {
 		printk(KERN_ERR PREFIX "DMI BIOS year==0, "
 			"assuming ACPI-capable machine\n" );
 		return 0;
 	}
 	if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
 		printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
 		       "acpi=force is required to enable ACPI\n",
 		       year, CONFIG_ACPI_BLACKLIST_YEAR);
 		return 1;
 	}
 	return 0;
 }
 #else
 static inline int blacklist_by_year(void)
 {
 	return 0;
 }
 #endif

 int __init acpi_blacklisted(void)
 {
 	int i = 0;
 	int blacklisted = 0;
 	struct acpi_table_header table_header;

 	while (acpi_blacklist[i].oem_id[0] != '\0') {
 		if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
 			i++;
 			continue;
 		}

 		if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
 			i++;
 			continue;
 		}

 		if (strncmp
 		    (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
 		     8)) {
 			i++;
 			continue;
 		}

 		if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
 		    || (acpi_blacklist[i].oem_revision_predicate ==
 			less_than_or_equal
 			&& table_header.oem_revision <=
 			acpi_blacklist[i].oem_revision)
 		    || (acpi_blacklist[i].oem_revision_predicate ==
 			greater_than_or_equal
 			&& table_header.oem_revision >=
 			acpi_blacklist[i].oem_revision)
 		    || (acpi_blacklist[i].oem_revision_predicate == equal
 			&& table_header.oem_revision ==
 			acpi_blacklist[i].oem_revision)) {

 			printk(KERN_ERR PREFIX
 			       "Vendor \"%6.6s\" System \"%8.8s\" "
 			       "Revision 0x%x has a known ACPI BIOS problem.\n",
 			       acpi_blacklist[i].oem_id,
 			       acpi_blacklist[i].oem_table_id,
 			       acpi_blacklist[i].oem_revision);

 			printk(KERN_ERR PREFIX
 			       "Reason: %s. This is a %s error\n",
 			       acpi_blacklist[i].reason,
 			       (acpi_blacklist[i].
 				is_critical_error ? "non-recoverable" :
 				"recoverable"));

 			blacklisted = acpi_blacklist[i].is_critical_error;
 			break;
 		} else {
 			i++;
 		}
 	}

 	blacklisted += blacklist_by_year();

 	dmi_check_system(acpi_osi_dmi_table);

 	return blacklisted;
 }
 #ifdef CONFIG_DMI
 static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
 {
 	acpi_dmi_osi_linux(1, d);	/* enable */
 	return 0;
 }
 static int __init dmi_disable_osi_linux(const struct dmi_system_id *d)
 {
 	acpi_dmi_osi_linux(0, d);	/* disable */
 	return 0;
 }
 static int __init dmi_unknown_osi_linux(const struct dmi_system_id *d)
 {
 	acpi_dmi_osi_linux(-1, d);	/* unknown */
 	return 0;
 }

 /*
  * Most BIOS that invoke OSI(Linux) do nothing with it.
  * But some cause Linux to break.
  * Only a couple use it to make Linux run better.
  *
  * Thus, Linux should continue to disable OSI(Linux) by default,
  * should continue to discourage BIOS writers from using it, and
  * should whitelist the few existing systems that require it.
  *
  * If it appears clear a vendor isn't using OSI(Linux)
  * for anything constructive, blacklist them by name to disable
  * unnecessary dmesg warnings on all of their products.
  */

 static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	/*
 	 * Disable OSI(Linux) warnings on all "Acer, inc."
 	 *
 	 * _OSI(Linux) disables the latest Windows BIOS code:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5050"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5580"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 3010"),
 	 * _OSI(Linux) effect unknown:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Ferrari 5000"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "Acer, inc.",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Acer, inc."),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "Acer"
 	 *
 	 * _OSI(Linux) effect unknown:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720Z"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5520"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 6460"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 7510"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5220"),
 	 */
 	{
 	.callback = dmi_unknown_osi_linux,
 	.ident = "Acer",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "Apple Computer, Inc."
 	 *
 	 * _OSI(Linux) confirmed to be a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
 	 * _OSI(Linux) effect unknown:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacPro2,1"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "Apple",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "BenQ"
 	 *
 	 * _OSI(Linux) confirmed to be a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Joybook S31"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "BenQ",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "BenQ"),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "Clevo Co."
 	 *
 	 * _OSI(Linux) confirmed to be a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "M570RU"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "Clevo",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "COMPAL"
 	 *
 	 * _OSI(Linux) confirmed to be a NOP:
 	 * DMI_MATCH(DMI_BOARD_NAME, "HEL8X"),
 	 * _OSI(Linux) unknown effect:
 	 * DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
 	 */
 	{
 	.callback = dmi_unknown_osi_linux,
 	.ident = "Compal",
 	.matches = {
 		     DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
 		},
 	},
 	{ /* OSI(Linux) touches USB, breaks suspend to disk */
 	.callback = dmi_disable_osi_linux,
 	.ident = "Dell Dimension 5150",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Dell DM051"),
 		},
 	},
 	{ /* OSI(Linux) is a NOP */
 	.callback = dmi_disable_osi_linux,
 	.ident = "Dell",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1501"),
 		},
 	},
 	{ /* OSI(Linux) effect unknown */
 	.callback = dmi_unknown_osi_linux,
 	.ident = "Dell",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D830"),
 		},
 	},
 	{ /* OSI(Linux) effect unknown */
 	.callback = dmi_unknown_osi_linux,
 	.ident = "Dell",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX620"),
 		},
 	},
 	{ /* OSI(Linux) effect unknown */
 	.callback = dmi_unknown_osi_linux,
 	.ident = "Dell",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1900"),
 		},
 	},
 	{ /* OSI(Linux) touches USB */
 	.callback = dmi_disable_osi_linux,
 	.ident = "Dell",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 390"),
 		},
 	},
 	{ /* OSI(Linux) is a NOP */
 	.callback = dmi_disable_osi_linux,
 	.ident = "Dell Vostro 1000",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Vostro   1000"),
 		},
 	},
 	{ /* OSI(Linux) effect unknown */
 	.callback = dmi_unknown_osi_linux,
 	.ident = "Dell",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge SC440"),
 		},
 	},
 	{ /* OSI(Linux) effect unknown */
 	.callback = dmi_unknown_osi_linux,
 	.ident = "Dialogue Flybook V5",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Dialogue Technology Corporation"),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Flybook V5"),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "FUJITSU SIEMENS"
 	 *
 	 * _OSI(Linux) disables latest Windows BIOS code:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 2510"),
 	 * _OSI(Linux) confirmed to be a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1536"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1556"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 1546"),
 	 * _OSI(Linux) unknown effect:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo M1425"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo Si 1520"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "Fujitsu Siemens",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "Hewlett-Packard"
 	 *
 	 * _OSI(Linux) confirmed to be a NOP:
 	 * .ident = "HP Pavilion tx 1000"
 	 * DMI_MATCH(DMI_BOARD_NAME, "30BF"),
 	 * .ident = "HP Pavilion dv2000"
 	 * DMI_MATCH(DMI_BOARD_NAME, "30B5"),
 	 * .ident = "HP Pavilion dv5000",
 	 * DMI_MATCH(DMI_BOARD_NAME, "30A7"),
 	 * .ident = "HP Pavilion dv6300 30BC",
 	 * DMI_MATCH(DMI_BOARD_NAME, "30BC"),
 	 * .ident = "HP Pavilion dv6000",
 	 * DMI_MATCH(DMI_BOARD_NAME, "30B7"),
 	 * DMI_MATCH(DMI_BOARD_NAME, "30B8"),
 	 * .ident = "HP Pavilion dv9000",
 	 * DMI_MATCH(DMI_BOARD_NAME, "30B9"),
 	 * .ident = "HP Pavilion dv9500",
 	 * DMI_MATCH(DMI_BOARD_NAME, "30CB"),
 	 * .ident = "HP/Compaq Presario C500",
 	 * DMI_MATCH(DMI_BOARD_NAME, "30C6"),
 	 * .ident = "HP/Compaq Presario F500",
 	 * DMI_MATCH(DMI_BOARD_NAME, "30D3"),
 	 * _OSI(Linux) unknown effect:
 	 * .ident = "HP Pavilion dv6500",
 	 * DMI_MATCH(DMI_BOARD_NAME, "30D0"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "Hewlett-Packard",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 		},
 	},
 	/*
 	 * Lenovo has a mix of systems OSI(Linux) situations
 	 * and thus we can not wildcard the vendor.
 	 *
 	 * _OSI(Linux) helps sound
 	 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 	 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 	 * _OSI(Linux) is a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
 	 */
 	{
 	.callback = dmi_enable_osi_linux,
 	.ident = "Lenovo ThinkPad R61",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 		},
 	},
 	{
 	.callback = dmi_enable_osi_linux,
 	.ident = "Lenovo ThinkPad T61",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 		},
 	},
 	{
 	.callback = dmi_unknown_osi_linux,
 	.ident = "Lenovo 3000 V100",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 		     DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
 		},
 	},
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "Lenovo 3000 N100",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 		     DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "LG Electronics"
 	 *
 	 * _OSI(Linux) confirmed to be a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "P1-J150B"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "LG",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
 		},
 	},
 	/* NEC - OSI(Linux) effect unknown */
 	{
 	.callback = dmi_unknown_osi_linux,
 	.ident = "NEC VERSA M360",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "NEC Computers SAS"),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "NEC VERSA M360"),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "Samsung Electronics"
 	 *
 	 * OSI(Linux) disables PNP0C32 and other BIOS code for Windows:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "R40P/R41P"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "R59P/R60P/R61P"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "Samsung",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "Sony Corporation"
 	 *
 	 * _OSI(Linux) is a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ650N"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ38GP_C"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-TZ21MN_N"),
 	 * _OSI(Linux) unknown effect:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ11M"),
 	 */
 	{
 	.callback = dmi_unknown_osi_linux,
 	.ident = "Sony",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 		},
 	},
 	/*
 	 * Disable OSI(Linux) warnings on all "TOSHIBA"
 	 *
 	 * _OSI(Linux) breaks sound (bugzilla 7787):
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P100"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P105"),
 	 * _OSI(Linux) is a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A100"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A210"),
 	 * _OSI(Linux) unknown effect:
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A135"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A200"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P205"),
 	 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U305"),
 	 */
 	{
 	.callback = dmi_disable_osi_linux,
 	.ident = "Toshiba",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 		},
 	},
 	{}
 };

 #endif /* CONFIG_DMI */
	/*
	* blacklist.c
	*
	* Check to see if the given machine has a known bad ACPI BIOS
	* or if the BIOS is too old.
	* Check given machine against acpi_osi_dmi_table[].
	*
	* Copyright (C) 2004 Len Brown <len.brown@intel.com>
	* Copyright (C) 2002 Andy Grover <andrew.grover@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.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
	*
	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	*/

	#include <linux/kernel.h>
	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/acpi.h>
	#include <acpi/acpi_bus.h>
	#include <linux/dmi.h>

	enum acpi_blacklist_predicates {
	all_versions,
	less_than_or_equal,
	equal,
	greater_than_or_equal,
	};

	struct acpi_blacklist_item {
	char oem_id[7];
	char oem_table_id[9];
	u32 oem_revision;
	char *table;
	enum acpi_blacklist_predicates oem_revision_predicate;
	char *reason;
	u32 is_critical_error;
	};

	static struct dmi_system_id acpi_osi_dmi_table[] __initdata;

	/*
	* POLICY: If anything doesn't work, put it on the blacklist.
	* If they are critical errors, mark it critical, and abort driver load.
	*/
	static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
	/* Compaq Presario 1700 */
	{"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
	"Multiple problems", 1},
	/* Sony FX120, FX140, FX150? */
	{"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
	"ACPI driver problem", 1},
	/* Compaq Presario 800, Insyde BIOS */
	{"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
	"Does not use _REG to protect EC OpRegions", 1},
	/* IBM 600E - _ADR should return 7, but it returns 1 */
	{"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
	"Incorrect _ADR", 1},
	{"ASUS\0\0", "P2B-S ", 0, ACPI_SIG_DSDT, all_versions,
	"Bogus PCI routing", 1},

	{""}
	};

	#if CONFIG_ACPI_BLACKLIST_YEAR

	static int __init blacklist_by_year(void)
	{
	int year = dmi_get_year(DMI_BIOS_DATE);
	/* Doesn't exist? Likely an old system */
	if (year == -1) {
	printk(KERN_ERR PREFIX "no DMI BIOS year, "
	"acpi=force is required to enable ACPI\n" );
	return 1;
	}
	/* 0? Likely a buggy new BIOS */
	if (year == 0) {
	printk(KERN_ERR PREFIX "DMI BIOS year==0, "
	"assuming ACPI-capable machine\n" );
	return 0;
	}
	if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
	printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
	"acpi=force is required to enable ACPI\n",
	year, CONFIG_ACPI_BLACKLIST_YEAR);
	return 1;
	}
	return 0;
	}
	#else
	static inline int blacklist_by_year(void)
	{
	return 0;
	}
	#endif

	int __init acpi_blacklisted(void)
	{
	int i = 0;
	int blacklisted = 0;
	struct acpi_table_header table_header;

	while (acpi_blacklist[i].oem_id[0] != '\0') {
	if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
	i++;
	continue;
	}

	if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
	i++;
	continue;
	}

	if (strncmp
	(acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
	8)) {
	i++;
	continue;
	}

	if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
	\|\| (acpi_blacklist[i].oem_revision_predicate ==
	less_than_or_equal
	&& table_header.oem_revision <=
	acpi_blacklist[i].oem_revision)
	\|\| (acpi_blacklist[i].oem_revision_predicate ==
	greater_than_or_equal
	&& table_header.oem_revision >=
	acpi_blacklist[i].oem_revision)
	\|\| (acpi_blacklist[i].oem_revision_predicate == equal
	&& table_header.oem_revision ==
	acpi_blacklist[i].oem_revision)) {

	printk(KERN_ERR PREFIX
	"Vendor \"%6.6s\" System \"%8.8s\" "
	"Revision 0x%x has a known ACPI BIOS problem.\n",
	acpi_blacklist[i].oem_id,
	acpi_blacklist[i].oem_table_id,
	acpi_blacklist[i].oem_revision);

	printk(KERN_ERR PREFIX
	"Reason: %s. This is a %s error\n",
	acpi_blacklist[i].reason,
	(acpi_blacklist[i].
	is_critical_error ? "non-recoverable" :
	"recoverable"));

	blacklisted = acpi_blacklist[i].is_critical_error;
	break;
	} else {
	i++;
	}
	}

	blacklisted += blacklist_by_year();

	dmi_check_system(acpi_osi_dmi_table);

	return blacklisted;
	}
	#ifdef CONFIG_DMI
	static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
	{
	acpi_dmi_osi_linux(1, d); /* enable */
	return 0;
	}
	static int __init dmi_disable_osi_linux(const struct dmi_system_id *d)
	{
	acpi_dmi_osi_linux(0, d); /* disable */
	return 0;
	}
	static int __init dmi_unknown_osi_linux(const struct dmi_system_id *d)
	{
	acpi_dmi_osi_linux(-1, d); /* unknown */
	return 0;
	}

	/*
	* Most BIOS that invoke OSI(Linux) do nothing with it.
	* But some cause Linux to break.
	* Only a couple use it to make Linux run better.
	*
	* Thus, Linux should continue to disable OSI(Linux) by default,
	* should continue to discourage BIOS writers from using it, and
	* should whitelist the few existing systems that require it.
	*
	* If it appears clear a vendor isn't using OSI(Linux)
	* for anything constructive, blacklist them by name to disable
	* unnecessary dmesg warnings on all of their products.
	*/

	static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
	/*
	* Disable OSI(Linux) warnings on all "Acer, inc."
	*
	* _OSI(Linux) disables the latest Windows BIOS code:
	* DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5050"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5580"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 3010"),
	* _OSI(Linux) effect unknown:
	* DMI_MATCH(DMI_PRODUCT_NAME, "Ferrari 5000"),
	*/
	{
	.callback = dmi_disable_osi_linux,
	.ident = "Acer, inc.",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Acer, inc."),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "Acer"
	*
	* _OSI(Linux) effect unknown:
	* DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720Z"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5520"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 6460"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 7510"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5220"),
	*/
	{
	.callback = dmi_unknown_osi_linux,
	.ident = "Acer",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "Apple Computer, Inc."
	*
	* _OSI(Linux) confirmed to be a NOP:
	* DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
	* _OSI(Linux) effect unknown:
	* DMI_MATCH(DMI_PRODUCT_NAME, "MacPro2,1"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
	*/
	{
	.callback = dmi_disable_osi_linux,
	.ident = "Apple",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "BenQ"
	*
	* _OSI(Linux) confirmed to be a NOP:
	* DMI_MATCH(DMI_PRODUCT_NAME, "Joybook S31"),
	*/
	{
	.callback = dmi_disable_osi_linux,
	.ident = "BenQ",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "BenQ"),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "Clevo Co."
	*
	* _OSI(Linux) confirmed to be a NOP:
	* DMI_MATCH(DMI_PRODUCT_NAME, "M570RU"),
	*/
	{
	.callback = dmi_disable_osi_linux,
	.ident = "Clevo",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "COMPAL"
	*
	* _OSI(Linux) confirmed to be a NOP:
	* DMI_MATCH(DMI_BOARD_NAME, "HEL8X"),
	* _OSI(Linux) unknown effect:
	* DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
	*/
	{
	.callback = dmi_unknown_osi_linux,
	.ident = "Compal",
	.matches = {
	DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
	},
	},
	{ /* OSI(Linux) touches USB, breaks suspend to disk */
	.callback = dmi_disable_osi_linux,
	.ident = "Dell Dimension 5150",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
	DMI_MATCH(DMI_PRODUCT_NAME, "Dell DM051"),
	},
	},
	{ /* OSI(Linux) is a NOP */
	.callback = dmi_disable_osi_linux,
	.ident = "Dell",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
	DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1501"),
	},
	},
	{ /* OSI(Linux) effect unknown */
	.callback = dmi_unknown_osi_linux,
	.ident = "Dell",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
	DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D830"),
	},
	},
	{ /* OSI(Linux) effect unknown */
	.callback = dmi_unknown_osi_linux,
	.ident = "Dell",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
	DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX620"),
	},
	},
	{ /* OSI(Linux) effect unknown */
	.callback = dmi_unknown_osi_linux,
	.ident = "Dell",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
	DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1900"),
	},
	},
	{ /* OSI(Linux) touches USB */
	.callback = dmi_disable_osi_linux,
	.ident = "Dell",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
	DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 390"),
	},
	},
	{ /* OSI(Linux) is a NOP */
	.callback = dmi_disable_osi_linux,
	.ident = "Dell Vostro 1000",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
	DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1000"),
	},
	},
	{ /* OSI(Linux) effect unknown */
	.callback = dmi_unknown_osi_linux,
	.ident = "Dell",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
	DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge SC440"),
	},
	},
	{ /* OSI(Linux) effect unknown */
	.callback = dmi_unknown_osi_linux,
	.ident = "Dialogue Flybook V5",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Dialogue Technology Corporation"),
	DMI_MATCH(DMI_PRODUCT_NAME, "Flybook V5"),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "FUJITSU SIEMENS"
	*
	* _OSI(Linux) disables latest Windows BIOS code:
	* DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 2510"),
	* _OSI(Linux) confirmed to be a NOP:
	* DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1536"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1556"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 1546"),
	* _OSI(Linux) unknown effect:
	* DMI_MATCH(DMI_PRODUCT_NAME, "Amilo M1425"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Amilo Si 1520"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
	*/
	{
	.callback = dmi_disable_osi_linux,
	.ident = "Fujitsu Siemens",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "Hewlett-Packard"
	*
	* _OSI(Linux) confirmed to be a NOP:
	* .ident = "HP Pavilion tx 1000"
	* DMI_MATCH(DMI_BOARD_NAME, "30BF"),
	* .ident = "HP Pavilion dv2000"
	* DMI_MATCH(DMI_BOARD_NAME, "30B5"),
	* .ident = "HP Pavilion dv5000",
	* DMI_MATCH(DMI_BOARD_NAME, "30A7"),
	* .ident = "HP Pavilion dv6300 30BC",
	* DMI_MATCH(DMI_BOARD_NAME, "30BC"),
	* .ident = "HP Pavilion dv6000",
	* DMI_MATCH(DMI_BOARD_NAME, "30B7"),
	* DMI_MATCH(DMI_BOARD_NAME, "30B8"),
	* .ident = "HP Pavilion dv9000",
	* DMI_MATCH(DMI_BOARD_NAME, "30B9"),
	* .ident = "HP Pavilion dv9500",
	* DMI_MATCH(DMI_BOARD_NAME, "30CB"),
	* .ident = "HP/Compaq Presario C500",
	* DMI_MATCH(DMI_BOARD_NAME, "30C6"),
	* .ident = "HP/Compaq Presario F500",
	* DMI_MATCH(DMI_BOARD_NAME, "30D3"),
	* _OSI(Linux) unknown effect:
	* .ident = "HP Pavilion dv6500",
	* DMI_MATCH(DMI_BOARD_NAME, "30D0"),
	*/
	{
	.callback = dmi_disable_osi_linux,
	.ident = "Hewlett-Packard",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
	},
	},
	/*
	* Lenovo has a mix of systems OSI(Linux) situations
	* and thus we can not wildcard the vendor.
	*
	* _OSI(Linux) helps sound
	* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
	* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
	* _OSI(Linux) is a NOP:
	* DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
	*/
	{
	.callback = dmi_enable_osi_linux,
	.ident = "Lenovo ThinkPad R61",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
	},
	},
	{
	.callback = dmi_enable_osi_linux,
	.ident = "Lenovo ThinkPad T61",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
	},
	},
	{
	.callback = dmi_unknown_osi_linux,
	.ident = "Lenovo 3000 V100",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
	},
	},
	{
	.callback = dmi_disable_osi_linux,
	.ident = "Lenovo 3000 N100",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "LG Electronics"
	*
	* _OSI(Linux) confirmed to be a NOP:
	* DMI_MATCH(DMI_PRODUCT_NAME, "P1-J150B"),
	*/
	{
	.callback = dmi_disable_osi_linux,
	.ident = "LG",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
	},
	},
	/* NEC - OSI(Linux) effect unknown */
	{
	.callback = dmi_unknown_osi_linux,
	.ident = "NEC VERSA M360",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "NEC Computers SAS"),
	DMI_MATCH(DMI_PRODUCT_NAME, "NEC VERSA M360"),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "Samsung Electronics"
	*
	* OSI(Linux) disables PNP0C32 and other BIOS code for Windows:
	* DMI_MATCH(DMI_PRODUCT_NAME, "R40P/R41P"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "R59P/R60P/R61P"),
	*/
	{
	.callback = dmi_disable_osi_linux,
	.ident = "Samsung",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "Sony Corporation"
	*
	* _OSI(Linux) is a NOP:
	* DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ650N"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ38GP_C"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "VGN-TZ21MN_N"),
	* _OSI(Linux) unknown effect:
	* DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ11M"),
	*/
	{
	.callback = dmi_unknown_osi_linux,
	.ident = "Sony",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
	},
	},
	/*
	* Disable OSI(Linux) warnings on all "TOSHIBA"
	*
	* _OSI(Linux) breaks sound (bugzilla 7787):
	* DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P100"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P105"),
	* _OSI(Linux) is a NOP:
	* DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A100"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A210"),
	* _OSI(Linux) unknown effect:
	* DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A135"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A200"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P205"),
	* DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U305"),
	*/
	{
	.callback = dmi_disable_osi_linux,
	.ident = "Toshiba",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
	},
	},
	{}
	};

	#endif /* CONFIG_DMI */