Commit | Line | Data |
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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 | }; |
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 | }; |
53 | ||
d4b7dc49 LB |
54 | static struct dmi_system_id acpi_osi_dmi_table[] __initdata; |
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 |
78 | ||
4be44fcd | 79 | static int __init blacklist_by_year(void) |
1da177e4 | 80 | { |
f083a329 AK |
81 | int year = dmi_get_year(DMI_BIOS_DATE); |
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 |
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 == |
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); |
170 | ||
1da177e4 LT |
171 | return blacklisted; |
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 | }, |
194 | }, | |
a6e0887f | 195 | |
a1bd4e35 | 196 | /* |
a6e0887f LB |
197 | * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. |
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 |
209 | * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), | |
a1bd4e35 LB |
210 | * _OSI(Linux) is a NOP: |
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 */ |