drivers/acpi/blacklist.c - linux - Git at Google

 /*
  *  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>

 #include "internal.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},

 	{""}
 };

 #if	CONFIG_ACPI_BLACKLIST_YEAR

 static int __init blacklist_by_year(void)
 {
 	int year;

 	/* Doesn't exist? Likely an old system */
 	if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {
 		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_vista(const struct dmi_system_id *d)
 {
 	printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
 	acpi_osi_setup("!Windows 2006");
 	return 0;
 }

 static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	{
 	.callback = dmi_disable_osi_vista,
 	.ident = "Fujitsu Siemens",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
 		},
 	},
 	{
 	.callback = dmi_disable_osi_vista,
 	.ident = "Sony VGN-NS10J_S",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
 		},
 	},
 	{
 	.callback = dmi_disable_osi_vista,
 	.ident = "Sony VGN-SR290J",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 		     DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"),
 		},
 	},

 	/*
 	 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
 	 * Linux ignores it, except for the machines enumerated below.
 	 */

 	/*
 	 * 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"),
 	 * T400, T500
 	 * _OSI(Linux) has Linux specific hooks
 	 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
 	 * _OSI(Linux) is a NOP:
 	 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
 	 * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
 	 */
 	{
 	.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_enable_osi_linux,
 	.ident = "Lenovo ThinkPad X61",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
 		},
 	},
 	{
 	.callback = dmi_enable_osi_linux,
 	.ident = "Lenovo ThinkPad T400",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
 		},
 	},
 	{
 	.callback = dmi_enable_osi_linux,
 	.ident = "Lenovo ThinkPad T500",
 	.matches = {
 		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
 		},
 	},
 	{}
 };

 #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>

	#include "internal.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},

	{""}
	};

	#if CONFIG_ACPI_BLACKLIST_YEAR

	static int __init blacklist_by_year(void)
	{
	int year;

	/* Doesn't exist? Likely an old system */
	if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {
	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_vista(const struct dmi_system_id *d)
	{
	printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
	acpi_osi_setup("!Windows 2006");
	return 0;
	}

	static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
	{
	.callback = dmi_disable_osi_vista,
	.ident = "Fujitsu Siemens",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
	DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
	},
	},
	{
	.callback = dmi_disable_osi_vista,
	.ident = "Sony VGN-NS10J_S",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
	DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
	},
	},
	{
	.callback = dmi_disable_osi_vista,
	.ident = "Sony VGN-SR290J",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
	DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"),
	},
	},

	/*
	* BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
	* Linux ignores it, except for the machines enumerated below.
	*/

	/*
	* 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"),
	* T400, T500
	* _OSI(Linux) has Linux specific hooks
	* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
	* _OSI(Linux) is a NOP:
	* DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
	* DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
	*/
	{
	.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_enable_osi_linux,
	.ident = "Lenovo ThinkPad X61",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
	},
	},
	{
	.callback = dmi_enable_osi_linux,
	.ident = "Lenovo ThinkPad T400",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
	},
	},
	{
	.callback = dmi_enable_osi_linux,
	.ident = "Lenovo ThinkPad T500",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
	},
	},
	{}
	};

	#endif /* CONFIG_DMI */