blob: 09c69806c1fc7693f91268ce86d0a8030dc2df59 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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.
Len Brownd4b7dc42008-01-23 20:50:56 -05006 * Check given machine against acpi_osi_dmi_table[].
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#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
Len Brown4be44fc2005-08-05 00:44:28 -040037enum acpi_blacklist_predicates {
38 all_versions,
39 less_than_or_equal,
40 equal,
41 greater_than_or_equal,
Linus Torvalds1da177e2005-04-16 15:20:36 -070042};
43
Len Brown4be44fc2005-08-05 00:44:28 -040044struct acpi_blacklist_item {
45 char oem_id[7];
46 char oem_table_id[9];
47 u32 oem_revision;
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030048 char *table;
Len Brown4be44fc2005-08-05 00:44:28 -040049 enum acpi_blacklist_predicates oem_revision_predicate;
50 char *reason;
51 u32 is_critical_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070052};
53
Len Brownd4b7dc42008-01-23 20:50:56 -050054static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
55
Linus Torvalds1da177e2005-04-16 15:20:36 -070056/*
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 */
Len Brown4be44fc2005-08-05 00:44:28 -040060static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 /* Compaq Presario 1700 */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030062 {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
Len Brown4be44fc2005-08-05 00:44:28 -040063 "Multiple problems", 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 /* Sony FX120, FX140, FX150? */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030065 {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
Len Brown4be44fc2005-08-05 00:44:28 -040066 "ACPI driver problem", 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 /* Compaq Presario 800, Insyde BIOS */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030068 {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
Len Brown4be44fc2005-08-05 00:44:28 -040069 "Does not use _REG to protect EC OpRegions", 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 /* IBM 600E - _ADR should return 7, but it returns 1 */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030071 {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
Len Brown4be44fc2005-08-05 00:44:28 -040072 "Incorrect _ADR", 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070073
74 {""}
75};
76
Linus Torvalds1da177e2005-04-16 15:20:36 -070077#if CONFIG_ACPI_BLACKLIST_YEAR
78
Len Brown4be44fc2005-08-05 00:44:28 -040079static int __init blacklist_by_year(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070080{
Andi Kleenf083a322006-03-25 16:30:19 +010081 int year = dmi_get_year(DMI_BIOS_DATE);
82 /* Doesn't exist? Likely an old system */
Anthony Godshall, Ampro Computers, Inc5b27b172007-03-09 21:19:05 -050083 if (year == -1) {
84 printk(KERN_ERR PREFIX "no DMI BIOS year, "
85 "acpi=force is required to enable ACPI\n" );
Andi Kleenf083a322006-03-25 16:30:19 +010086 return 1;
Anthony Godshall, Ampro Computers, Inc5b27b172007-03-09 21:19:05 -050087 }
Andi Kleenf083a322006-03-25 16:30:19 +010088 /* 0? Likely a buggy new BIOS */
Anthony Godshall, Ampro Computers, Inc5b27b172007-03-09 21:19:05 -050089 if (year == 0) {
90 printk(KERN_ERR PREFIX "DMI BIOS year==0, "
91 "assuming ACPI-capable machine\n" );
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 return 0;
Anthony Godshall, Ampro Computers, Inc5b27b172007-03-09 21:19:05 -050093 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
Len Brown4be44fc2005-08-05 00:44:28 -040095 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 return 1;
99 }
100 return 0;
101}
102#else
Len Brown4be44fc2005-08-05 00:44:28 -0400103static inline int blacklist_by_year(void)
104{
105 return 0;
106}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107#endif
108
Len Brown4be44fc2005-08-05 00:44:28 -0400109int __init acpi_blacklisted(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110{
111 int i = 0;
112 int blacklisted = 0;
Alexey Starikovskiy428f2112007-02-02 19:48:22 +0300113 struct acpi_table_header table_header;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
Len Brown4be44fc2005-08-05 00:44:28 -0400115 while (acpi_blacklist[i].oem_id[0] != '\0') {
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +0300116 if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 i++;
118 continue;
119 }
120
Alexey Starikovskiy428f2112007-02-02 19:48:22 +0300121 if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 i++;
123 continue;
124 }
125
Len Brown4be44fc2005-08-05 00:44:28 -0400126 if (strncmp
Alexey Starikovskiy428f2112007-02-02 19:48:22 +0300127 (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
Len Brown4be44fc2005-08-05 00:44:28 -0400128 8)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129 i++;
130 continue;
131 }
132
133 if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
Len Brown4be44fc2005-08-05 00:44:28 -0400134 || (acpi_blacklist[i].oem_revision_predicate ==
135 less_than_or_equal
Alexey Starikovskiy428f2112007-02-02 19:48:22 +0300136 && table_header.oem_revision <=
Len Brown4be44fc2005-08-05 00:44:28 -0400137 acpi_blacklist[i].oem_revision)
138 || (acpi_blacklist[i].oem_revision_predicate ==
139 greater_than_or_equal
Alexey Starikovskiy428f2112007-02-02 19:48:22 +0300140 && table_header.oem_revision >=
Len Brown4be44fc2005-08-05 00:44:28 -0400141 acpi_blacklist[i].oem_revision)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 || (acpi_blacklist[i].oem_revision_predicate == equal
Alexey Starikovskiy428f2112007-02-02 19:48:22 +0300143 && table_header.oem_revision ==
Len Brown4be44fc2005-08-05 00:44:28 -0400144 acpi_blacklist[i].oem_revision)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
Len Brown4be44fc2005-08-05 00:44:28 -0400146 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
Len Brown4be44fc2005-08-05 00:44:28 -0400153 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"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159
160 blacklisted = acpi_blacklist[i].is_critical_error;
161 break;
Len Brown4be44fc2005-08-05 00:44:28 -0400162 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 i++;
164 }
165 }
166
167 blacklisted += blacklist_by_year();
168
Len Brownd4b7dc42008-01-23 20:50:56 -0500169 dmi_check_system(acpi_osi_dmi_table);
170
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 return blacklisted;
172}
Len Brownd4b7dc42008-01-23 20:50:56 -0500173#ifdef CONFIG_DMI
Len Brown98f1db22008-01-23 20:56:18 -0500174static 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}
Len Brown46c1fbd2008-02-13 23:13:25 -0500179static 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}
Len Browna1bd4e32008-01-23 21:19:27 -0500185
Len Brownd4b7dc42008-01-23 20:50:56 -0500186static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
Len Brown46c1fbd2008-02-13 23:13:25 -0500187 {
188 .callback = dmi_disable_osi_vista,
189 .ident = "Fujitsu Siemens",
190 .matches = {
191 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
Len Browna6e08872008-11-08 01:21:10 -0500192 DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
Len Brown46c1fbd2008-02-13 23:13:25 -0500193 },
194 },
Len Browna6e08872008-11-08 01:21:10 -0500195
Len Browna1bd4e32008-01-23 21:19:27 -0500196 /*
Len Browna6e08872008-11-08 01:21:10 -0500197 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
198 * Linux ignores it, except for the machines enumerated below.
Len Browna1bd4e32008-01-23 21:19:27 -0500199 */
Len Browna6e08872008-11-08 01:21:10 -0500200
Len Browna1bd4e32008-01-23 21:19:27 -0500201 /*
202 * Lenovo has a mix of systems OSI(Linux) situations
203 * and thus we can not wildcard the vendor.
204 *
Len Brown98f1db22008-01-23 20:56:18 -0500205 * _OSI(Linux) helps sound
206 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
207 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
Len Brownbb546752008-02-10 21:29:56 -0500208 * _OSI(Linux) has Linux specific hooks
209 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
Len Browna1bd4e32008-01-23 21:19:27 -0500210 * _OSI(Linux) is a NOP:
211 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
Len Brownbb546752008-02-10 21:29:56 -0500212 * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
Len Brown98f1db22008-01-23 20:56:18 -0500213 */
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 },
Len Browna1bd4e32008-01-23 21:19:27 -0500230 {
Len Brownbb546752008-02-10 21:29:56 -0500231 .callback = dmi_enable_osi_linux,
Len Brown446b1df2008-02-07 16:23:00 -0500232 .ident = "Lenovo ThinkPad X61",
233 .matches = {
234 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
235 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
236 },
237 },
Len Brownd4b7dc42008-01-23 20:50:56 -0500238 {}
239};
240
241#endif /* CONFIG_DMI */