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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. | |
6 | * Check given machine against acpi_osi_dmi_table[]. | |
7 | * | |
8 | * Copyright (C) 2004 Len Brown <[email protected]> | |
9 | * Copyright (C) 2002 Andy Grover <[email protected]> | |
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 | ||
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 | ||
37 | enum acpi_blacklist_predicates { | |
38 | all_versions, | |
39 | less_than_or_equal, | |
40 | equal, | |
41 | greater_than_or_equal, | |
42 | }; | |
43 | ||
44 | struct acpi_blacklist_item { | |
45 | char oem_id[7]; | |
46 | char oem_table_id[9]; | |
47 | u32 oem_revision; | |
48 | char *table; | |
49 | enum acpi_blacklist_predicates oem_revision_predicate; | |
50 | char *reason; | |
51 | u32 is_critical_error; | |
52 | }; | |
53 | ||
54 | static struct dmi_system_id acpi_osi_dmi_table[] __initdata; | |
55 | ||
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 | */ | |
60 | static struct acpi_blacklist_item acpi_blacklist[] __initdata = { | |
61 | /* Compaq Presario 1700 */ | |
62 | {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal, | |
63 | "Multiple problems", 1}, | |
64 | /* Sony FX120, FX140, FX150? */ | |
65 | {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal, | |
66 | "ACPI driver problem", 1}, | |
67 | /* Compaq Presario 800, Insyde BIOS */ | |
68 | {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal, | |
69 | "Does not use _REG to protect EC OpRegions", 1}, | |
70 | /* IBM 600E - _ADR should return 7, but it returns 1 */ | |
71 | {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal, | |
72 | "Incorrect _ADR", 1}, | |
73 | ||
74 | {""} | |
75 | }; | |
76 | ||
77 | #if CONFIG_ACPI_BLACKLIST_YEAR | |
78 | ||
79 | static int __init blacklist_by_year(void) | |
80 | { | |
81 | int year; | |
82 | ||
83 | /* Doesn't exist? Likely an old system */ | |
84 | if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) { | |
85 | printk(KERN_ERR PREFIX "no DMI BIOS year, " | |
86 | "acpi=force is required to enable ACPI\n" ); | |
87 | return 1; | |
88 | } | |
89 | /* 0? Likely a buggy new BIOS */ | |
90 | if (year == 0) { | |
91 | printk(KERN_ERR PREFIX "DMI BIOS year==0, " | |
92 | "assuming ACPI-capable machine\n" ); | |
93 | return 0; | |
94 | } | |
95 | if (year < CONFIG_ACPI_BLACKLIST_YEAR) { | |
96 | printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), " | |
97 | "acpi=force is required to enable ACPI\n", | |
98 | year, CONFIG_ACPI_BLACKLIST_YEAR); | |
99 | return 1; | |
100 | } | |
101 | return 0; | |
102 | } | |
103 | #else | |
104 | static inline int blacklist_by_year(void) | |
105 | { | |
106 | return 0; | |
107 | } | |
108 | #endif | |
109 | ||
110 | int __init acpi_blacklisted(void) | |
111 | { | |
112 | int i = 0; | |
113 | int blacklisted = 0; | |
114 | struct acpi_table_header table_header; | |
115 | ||
116 | while (acpi_blacklist[i].oem_id[0] != '\0') { | |
117 | if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) { | |
118 | i++; | |
119 | continue; | |
120 | } | |
121 | ||
122 | if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) { | |
123 | i++; | |
124 | continue; | |
125 | } | |
126 | ||
127 | if (strncmp | |
128 | (acpi_blacklist[i].oem_table_id, table_header.oem_table_id, | |
129 | 8)) { | |
130 | i++; | |
131 | continue; | |
132 | } | |
133 | ||
134 | if ((acpi_blacklist[i].oem_revision_predicate == all_versions) | |
135 | || (acpi_blacklist[i].oem_revision_predicate == | |
136 | less_than_or_equal | |
137 | && table_header.oem_revision <= | |
138 | acpi_blacklist[i].oem_revision) | |
139 | || (acpi_blacklist[i].oem_revision_predicate == | |
140 | greater_than_or_equal | |
141 | && table_header.oem_revision >= | |
142 | acpi_blacklist[i].oem_revision) | |
143 | || (acpi_blacklist[i].oem_revision_predicate == equal | |
144 | && table_header.oem_revision == | |
145 | acpi_blacklist[i].oem_revision)) { | |
146 | ||
147 | printk(KERN_ERR PREFIX | |
148 | "Vendor \"%6.6s\" System \"%8.8s\" " | |
149 | "Revision 0x%x has a known ACPI BIOS problem.\n", | |
150 | acpi_blacklist[i].oem_id, | |
151 | acpi_blacklist[i].oem_table_id, | |
152 | acpi_blacklist[i].oem_revision); | |
153 | ||
154 | printk(KERN_ERR PREFIX | |
155 | "Reason: %s. This is a %s error\n", | |
156 | acpi_blacklist[i].reason, | |
157 | (acpi_blacklist[i]. | |
158 | is_critical_error ? "non-recoverable" : | |
159 | "recoverable")); | |
160 | ||
161 | blacklisted = acpi_blacklist[i].is_critical_error; | |
162 | break; | |
163 | } else { | |
164 | i++; | |
165 | } | |
166 | } | |
167 | ||
168 | blacklisted += blacklist_by_year(); | |
169 | ||
170 | dmi_check_system(acpi_osi_dmi_table); | |
171 | ||
172 | return blacklisted; | |
173 | } | |
174 | #ifdef CONFIG_DMI | |
175 | static int __init dmi_enable_osi_linux(const struct dmi_system_id *d) | |
176 | { | |
177 | acpi_dmi_osi_linux(1, d); /* enable */ | |
178 | return 0; | |
179 | } | |
180 | static int __init dmi_disable_osi_vista(const struct dmi_system_id *d) | |
181 | { | |
182 | printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); | |
183 | acpi_osi_setup("!Windows 2006"); | |
184 | return 0; | |
185 | } | |
186 | ||
187 | static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { | |
188 | { | |
189 | .callback = dmi_disable_osi_vista, | |
190 | .ident = "Fujitsu Siemens", | |
191 | .matches = { | |
192 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
193 | DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"), | |
194 | }, | |
195 | }, | |
196 | { | |
197 | .callback = dmi_disable_osi_vista, | |
198 | .ident = "Sony VGN-NS10J_S", | |
199 | .matches = { | |
200 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
201 | DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"), | |
202 | }, | |
203 | }, | |
204 | { | |
205 | .callback = dmi_disable_osi_vista, | |
206 | .ident = "Sony VGN-SR290J", | |
207 | .matches = { | |
208 | DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), | |
209 | DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"), | |
210 | }, | |
211 | }, | |
212 | ||
213 | /* | |
214 | * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. | |
215 | * Linux ignores it, except for the machines enumerated below. | |
216 | */ | |
217 | ||
218 | /* | |
219 | * Lenovo has a mix of systems OSI(Linux) situations | |
220 | * and thus we can not wildcard the vendor. | |
221 | * | |
222 | * _OSI(Linux) helps sound | |
223 | * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"), | |
224 | * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"), | |
225 | * _OSI(Linux) has Linux specific hooks | |
226 | * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), | |
227 | * _OSI(Linux) is a NOP: | |
228 | * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"), | |
229 | * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"), | |
230 | */ | |
231 | { | |
232 | .callback = dmi_enable_osi_linux, | |
233 | .ident = "Lenovo ThinkPad R61", | |
234 | .matches = { | |
235 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
236 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"), | |
237 | }, | |
238 | }, | |
239 | { | |
240 | .callback = dmi_enable_osi_linux, | |
241 | .ident = "Lenovo ThinkPad T61", | |
242 | .matches = { | |
243 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
244 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"), | |
245 | }, | |
246 | }, | |
247 | { | |
248 | .callback = dmi_enable_osi_linux, | |
249 | .ident = "Lenovo ThinkPad X61", | |
250 | .matches = { | |
251 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
252 | DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), | |
253 | }, | |
254 | }, | |
255 | {} | |
256 | }; | |
257 | ||
258 | #endif /* CONFIG_DMI */ |