]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/acpi/blacklist.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[net-next-2.6.git] / drivers / acpi / blacklist.c
CommitLineData
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
a192a958
LB		 37#include "internal.h"
38
4be44fcd
LB		 39enum acpi_blacklist_predicates {
40 all_versions,
41 less_than_or_equal,
42 equal,
43 greater_than_or_equal,
1da177e4
LT		 44};
45
4be44fcd
LB		 46struct acpi_blacklist_item {
47 char oem_id[7];
48 char oem_table_id[9];
49 u32 oem_revision;
ad71860a 50 char *table;
4be44fcd
LB		 51 enum acpi_blacklist_predicates oem_revision_predicate;
52 char *reason;
53 u32 is_critical_error;
1da177e4
LT		 54};
55
d4b7dc49
LB		 56static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
57
1da177e4
LT		 58/*
59 * POLICY: If *anything* doesn't work, put it on the blacklist.
60 * If they are critical errors, mark it critical, and abort driver load.
61 */
4be44fcd 62static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
1da177e4 63 /* Compaq Presario 1700 */
ad71860a 64 {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
4be44fcd 65 "Multiple problems", 1},
1da177e4 66 /* Sony FX120, FX140, FX150? */
ad71860a 67 {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
4be44fcd 68 "ACPI driver problem", 1},
1da177e4 69 /* Compaq Presario 800, Insyde BIOS */
ad71860a 70 {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
4be44fcd 71 "Does not use _REG to protect EC OpRegions", 1},
1da177e4 72 /* IBM 600E - _ADR should return 7, but it returns 1 */
ad71860a 73 {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
4be44fcd 74 "Incorrect _ADR", 1},
1da177e4
LT		 75
76 {""}
77};
78
1da177e4
LT		 79#if CONFIG_ACPI_BLACKLIST_YEAR
80
4be44fcd 81static int __init blacklist_by_year(void)
1da177e4 82{
3e5cd1f2
TH		 83 int year;
84
f083a329 85 /* Doesn't exist? Likely an old system */
3e5cd1f2 86 if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {
5b27b176
AGACI		 87 printk(KERN_ERR PREFIX "no DMI BIOS year, "
88 "acpi=force is required to enable ACPI\n" );
f083a329 89 return 1;
5b27b176 90 }
f083a329 91 /* 0? Likely a buggy new BIOS */
5b27b176
AGACI		 92 if (year == 0) {
93 printk(KERN_ERR PREFIX "DMI BIOS year==0, "
94 "assuming ACPI-capable machine\n" );
1da177e4 95 return 0;
5b27b176 96 }
1da177e4 97 if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
4be44fcd
LB		 98 printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
99 "acpi=force is required to enable ACPI\n",
100 year, CONFIG_ACPI_BLACKLIST_YEAR);
1da177e4
LT		 101 return 1;
102 }
103 return 0;
104}
105#else
4be44fcd
LB		 106static inline int blacklist_by_year(void)
107{
108 return 0;
109}
1da177e4
LT		 110#endif
111
4be44fcd 112int __init acpi_blacklisted(void)
1da177e4
LT		 113{
114 int i = 0;
115 int blacklisted = 0;
428f2112 116 struct acpi_table_header table_header;
1da177e4 117
4be44fcd 118 while (acpi_blacklist[i].oem_id[0] != '\0') {
ad71860a 119 if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
1da177e4
LT		 120 i++;
121 continue;
122 }
123
428f2112 124 if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
1da177e4
LT		 125 i++;
126 continue;
127 }
128
4be44fcd 129 if (strncmp
428f2112 130 (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
4be44fcd 131 8)) {
1da177e4
LT		 132 i++;
133 continue;
134 }
135
136 if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
4be44fcd
LB		 137 || (acpi_blacklist[i].oem_revision_predicate ==
138 less_than_or_equal
428f2112 139 && table_header.oem_revision <=
4be44fcd
LB		 140 acpi_blacklist[i].oem_revision)
141 || (acpi_blacklist[i].oem_revision_predicate ==
142 greater_than_or_equal
428f2112 143 && table_header.oem_revision >=
4be44fcd 144 acpi_blacklist[i].oem_revision)
1da177e4 145 || (acpi_blacklist[i].oem_revision_predicate == equal
428f2112 146 && table_header.oem_revision ==
4be44fcd
LB		 147 acpi_blacklist[i].oem_revision)) {
148
149 printk(KERN_ERR PREFIX
150 "Vendor \"%6.6s\" System \"%8.8s\" "
151 "Revision 0x%x has a known ACPI BIOS problem.\n",
152 acpi_blacklist[i].oem_id,
153 acpi_blacklist[i].oem_table_id,
154 acpi_blacklist[i].oem_revision);
155
156 printk(KERN_ERR PREFIX
157 "Reason: %s. This is a %s error\n",
158 acpi_blacklist[i].reason,
159 (acpi_blacklist[i].
160 is_critical_error ? "non-recoverable" :
161 "recoverable"));
1da177e4
LT		 162
163 blacklisted = acpi_blacklist[i].is_critical_error;
164 break;
4be44fcd 165 } else {
1da177e4
LT		 166 i++;
167 }
168 }
169
170 blacklisted += blacklist_by_year();
171
d4b7dc49
LB		 172 dmi_check_system(acpi_osi_dmi_table);
173
1da177e4
LT		 174 return blacklisted;
175}
d4b7dc49 176#ifdef CONFIG_DMI
98f1db22
LB		 177static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
178{
179 acpi_dmi_osi_linux(1, d); /* enable */
180 return 0;
181}
46c1fbdb
LB		 182static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
183{
184 printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
185 acpi_osi_setup("!Windows 2006");
186 return 0;
187}
81074e90
ZR		 188static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
189{
190 printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
191 acpi_osi_setup("!Windows 2009");
192 return 0;
193}
a1bd4e35 194
d4b7dc49 195static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
46c1fbdb
LB		 196 {
197 .callback = dmi_disable_osi_vista,
198 .ident = "Fujitsu Siemens",
199 .matches = {
200 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
a6e0887f 201 DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
46c1fbdb
LB		 202 },
203 },
35a7c64f
ZR		 204 {
205 .callback = dmi_disable_osi_vista,
206 .ident = "Sony VGN-NS10J_S",
207 .matches = {
208 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
209 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
210 },
211 },
212 {
213 .callback = dmi_disable_osi_vista,
214 .ident = "Sony VGN-SR290J",
215 .matches = {
216 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
217 DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"),
218 },
219 },
81074e90 220 {
4b1b29bc
ZR		 221 .callback = dmi_disable_osi_vista,
222 .ident = "VGN-NS50B_L",
223 .matches = {
224 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
225 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
226 },
227 },
228 {
81074e90
ZR		 229 .callback = dmi_disable_osi_win7,
230 .ident = "ASUS K50IJ",
231 .matches = {
232 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
233 DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
234 },
235 },
a6e0887f 236
a1bd4e35 237 /*
a6e0887f
LB		 238 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
239 * Linux ignores it, except for the machines enumerated below.
a1bd4e35 240 */
a6e0887f 241
a1bd4e35
LB		 242 /*
243 * Lenovo has a mix of systems OSI(Linux) situations
244 * and thus we can not wildcard the vendor.
245 *
98f1db22
LB		 246 * _OSI(Linux) helps sound
247 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
248 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
8b1edc57 249 * T400, T500
bb54675b
LB		 250 * _OSI(Linux) has Linux specific hooks
251 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
a1bd4e35
LB		 252 * _OSI(Linux) is a NOP:
253 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
bb54675b 254 * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
98f1db22
LB		 255 */
256 {
257 .callback = dmi_enable_osi_linux,
258 .ident = "Lenovo ThinkPad R61",
259 .matches = {
260 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
261 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
262 },
263 },
264 {
265 .callback = dmi_enable_osi_linux,
266 .ident = "Lenovo ThinkPad T61",
267 .matches = {
268 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
269 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
270 },
271 },
a1bd4e35 272 {
bb54675b 273 .callback = dmi_enable_osi_linux,
446b1dfc
LB		 274 .ident = "Lenovo ThinkPad X61",
275 .matches = {
276 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
277 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
278 },
279 },
8b1edc57
JY		 280 {
281 .callback = dmi_enable_osi_linux,
282 .ident = "Lenovo ThinkPad T400",
283 .matches = {
284 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
285 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
286 },
287 },
288 {
289 .callback = dmi_enable_osi_linux,
290 .ident = "Lenovo ThinkPad T500",
291 .matches = {
292 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
293 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
294 },
295 },
d4b7dc49
LB		 296 {}
297};
298
299#endif /* CONFIG_DMI */
Clone of davem's net-next-2.6 tree