[linux-2.6-block.git] / drivers / acpi / blacklist.c

/*
 *  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},

	{""}
};

#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_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"),
		},
	},

	/*
	 * 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"),
	 * _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"),
		},
	},
	{}
};

#endif /* CONFIG_DMI */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* blacklist.c
	3	*
	4	* Check to see if the given machine has a known bad ACPI BIOS
	5	* or if the BIOS is too old.
d4b7dc49	6	* Check given machine against acpi_osi_dmi_table[].
1da177e4 LT	7	*
	8	* Copyright (C) 2004 Len Brown <len.brown@intel.com>
	9	* Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
	10	*
	11	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	12	*
	13	* This program is free software; you can redistribute it and/or modify
	14	* it under the terms of the GNU General Public License as published by
	15	* the Free Software Foundation; either version 2 of the License, or (at
	16	* your option) any later version.
	17	*
	18	* This program is distributed in the hope that it will be useful, but
	19	* WITHOUT ANY WARRANTY; without even the implied warranty of
	20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	21	* General Public License for more details.
	22	*
	23	* You should have received a copy of the GNU General Public License along
	24	* with this program; if not, write to the Free Software Foundation, Inc.,
	25	* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
	26	*
	27	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	28	*/
	29
1da177e4 LT	30	#include <linux/kernel.h>
	31	#include <linux/module.h>
	32	#include <linux/init.h>
	33	#include <linux/acpi.h>
	34	#include <acpi/acpi_bus.h>
	35	#include <linux/dmi.h>
	36
4be44fcd LB	37	enum acpi_blacklist_predicates {
	38	all_versions,
	39	less_than_or_equal,
	40	equal,
	41	greater_than_or_equal,
1da177e4 LT	42	};
1da177e4 LT	43
4be44fcd LB	44	struct acpi_blacklist_item {
	45	char oem_id[7];
	46	char oem_table_id[9];
	47	u32 oem_revision;
ad71860a	48	char *table;
4be44fcd LB	49	enum acpi_blacklist_predicates oem_revision_predicate;
	50	char *reason;
	51	u32 is_critical_error;
1da177e4 LT	52	};
1da177e4 LT	53
d4b7dc49 LB	54	static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
d4b7dc49 LB	55
1da177e4 LT	56	/*
	57	* POLICY: If anything doesn't work, put it on the blacklist.
	58	* If they are critical errors, mark it critical, and abort driver load.
	59	*/
4be44fcd	60	static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
1da177e4	61	/* Compaq Presario 1700 */
ad71860a	62	{"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
4be44fcd	63	"Multiple problems", 1},
1da177e4	64	/* Sony FX120, FX140, FX150? */
ad71860a	65	{"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
4be44fcd	66	"ACPI driver problem", 1},
1da177e4	67	/* Compaq Presario 800, Insyde BIOS */
ad71860a	68	{"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
4be44fcd	69	"Does not use _REG to protect EC OpRegions", 1},
1da177e4	70	/* IBM 600E - _ADR should return 7, but it returns 1 */
ad71860a	71	{"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
4be44fcd	72	"Incorrect _ADR", 1},
1da177e4 LT	73
	74	{""}
	75	};
	76
1da177e4 LT	77	#if CONFIG_ACPI_BLACKLIST_YEAR
1da177e4 LT	78
4be44fcd	79	static int __init blacklist_by_year(void)
1da177e4	80	{
f083a329 AK	81	int year = dmi_get_year(DMI_BIOS_DATE);
f083a329 AK	82	/* Doesn't exist? Likely an old system */
5b27b176 AGACI	83	if (year == -1) {
	84	printk(KERN_ERR PREFIX "no DMI BIOS year, "
	85	"acpi=force is required to enable ACPI\n" );
f083a329	86	return 1;
5b27b176	87	}
f083a329	88	/* 0? Likely a buggy new BIOS */
5b27b176 AGACI	89	if (year == 0) {
	90	printk(KERN_ERR PREFIX "DMI BIOS year==0, "
	91	"assuming ACPI-capable machine\n" );
1da177e4	92	return 0;
5b27b176	93	}
1da177e4	94	if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
4be44fcd LB	95	printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
	96	"acpi=force is required to enable ACPI\n",
	97	year, CONFIG_ACPI_BLACKLIST_YEAR);
1da177e4 LT	98	return 1;
	99	}
	100	return 0;
	101	}
	102	#else
4be44fcd LB	103	static inline int blacklist_by_year(void)
	104	{
	105	return 0;
	106	}
1da177e4 LT	107	#endif
1da177e4 LT	108
4be44fcd	109	int __init acpi_blacklisted(void)
1da177e4 LT	110	{
	111	int i = 0;
	112	int blacklisted = 0;
428f2112	113	struct acpi_table_header table_header;
1da177e4	114
4be44fcd	115	while (acpi_blacklist[i].oem_id[0] != '\0') {
ad71860a	116	if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
1da177e4 LT	117	i++;
	118	continue;
	119	}
	120
428f2112	121	if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
1da177e4 LT	122	i++;
	123	continue;
	124	}
	125
4be44fcd	126	if (strncmp
428f2112	127	(acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
4be44fcd	128	8)) {
1da177e4 LT	129	i++;
	130	continue;
	131	}
	132
	133	if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
4be44fcd LB	134	\|\| (acpi_blacklist[i].oem_revision_predicate ==
4be44fcd LB	135	less_than_or_equal
428f2112	136	&& table_header.oem_revision <=
4be44fcd LB	137	acpi_blacklist[i].oem_revision)
	138	\|\| (acpi_blacklist[i].oem_revision_predicate ==
	139	greater_than_or_equal
428f2112	140	&& table_header.oem_revision >=
4be44fcd	141	acpi_blacklist[i].oem_revision)
1da177e4	142	\|\| (acpi_blacklist[i].oem_revision_predicate == equal
428f2112	143	&& table_header.oem_revision ==
4be44fcd LB	144	acpi_blacklist[i].oem_revision)) {
	145
	146	printk(KERN_ERR PREFIX
	147	"Vendor \"%6.6s\" System \"%8.8s\" "
	148	"Revision 0x%x has a known ACPI BIOS problem.\n",
	149	acpi_blacklist[i].oem_id,
	150	acpi_blacklist[i].oem_table_id,
	151	acpi_blacklist[i].oem_revision);
	152
	153	printk(KERN_ERR PREFIX
	154	"Reason: %s. This is a %s error\n",
	155	acpi_blacklist[i].reason,
	156	(acpi_blacklist[i].
	157	is_critical_error ? "non-recoverable" :
	158	"recoverable"));
1da177e4 LT	159
	160	blacklisted = acpi_blacklist[i].is_critical_error;
	161	break;
4be44fcd	162	} else {
1da177e4 LT	163	i++;
	164	}
	165	}
	166
	167	blacklisted += blacklist_by_year();
	168
d4b7dc49 LB	169	dmi_check_system(acpi_osi_dmi_table);
d4b7dc49 LB	170
1da177e4 LT	171	return blacklisted;
1da177e4 LT	172	}
d4b7dc49	173	#ifdef CONFIG_DMI
98f1db22 LB	174	static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
	175	{
	176	acpi_dmi_osi_linux(1, d); /* enable */
	177	return 0;
	178	}
46c1fbdb LB	179	static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
	180	{
	181	printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
	182	acpi_osi_setup("!Windows 2006");
	183	return 0;
	184	}
a1bd4e35	185
d4b7dc49	186	static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
46c1fbdb LB	187	{
	188	.callback = dmi_disable_osi_vista,
	189	.ident = "Fujitsu Siemens",
	190	.matches = {
	191	DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
a6e0887f	192	DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
46c1fbdb LB	193	},
46c1fbdb LB	194	},
a6e0887f	195
a1bd4e35	196	/*
a6e0887f LB	197	* BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
a6e0887f LB	198	* Linux ignores it, except for the machines enumerated below.
a1bd4e35	199	*/
a6e0887f	200
a1bd4e35 LB	201	/*
	202	* Lenovo has a mix of systems OSI(Linux) situations
	203	* and thus we can not wildcard the vendor.
	204	*
98f1db22 LB	205	* _OSI(Linux) helps sound
	206	* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
	207	* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
bb54675b LB	208	* _OSI(Linux) has Linux specific hooks
bb54675b LB	209	* DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
a1bd4e35 LB	210	* _OSI(Linux) is a NOP:
a1bd4e35 LB	211	* DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
bb54675b	212	* DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
98f1db22 LB	213	*/
	214	{
	215	.callback = dmi_enable_osi_linux,
	216	.ident = "Lenovo ThinkPad R61",
	217	.matches = {
	218	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	219	DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
	220	},
	221	},
	222	{
	223	.callback = dmi_enable_osi_linux,
	224	.ident = "Lenovo ThinkPad T61",
	225	.matches = {
	226	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	227	DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
	228	},
	229	},
a1bd4e35	230	{
bb54675b	231	.callback = dmi_enable_osi_linux,
446b1dfc LB	232	.ident = "Lenovo ThinkPad X61",
	233	.matches = {
	234	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	235	DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
	236	},
	237	},
d4b7dc49 LB	238	{}
	239	};
	240
	241	#endif /* CONFIG_DMI */