Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
[linux-2.6.git] / drivers / acpi / blacklist.c
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 <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
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 #include "internal.h"
38
39 enum acpi_blacklist_predicates {
40         all_versions,
41         less_than_or_equal,
42         equal,
43         greater_than_or_equal,
44 };
45
46 struct acpi_blacklist_item {
47         char oem_id[7];
48         char oem_table_id[9];
49         u32 oem_revision;
50         char *table;
51         enum acpi_blacklist_predicates oem_revision_predicate;
52         char *reason;
53         u32 is_critical_error;
54 };
55
56 static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
57
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  */
62 static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
63         /* Compaq Presario 1700 */
64         {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
65          "Multiple problems", 1},
66         /* Sony FX120, FX140, FX150? */
67         {"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
68          "ACPI driver problem", 1},
69         /* Compaq Presario 800, Insyde BIOS */
70         {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
71          "Does not use _REG to protect EC OpRegions", 1},
72         /* IBM 600E - _ADR should return 7, but it returns 1 */
73         {"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
74          "Incorrect _ADR", 1},
75
76         {""}
77 };
78
79 #if     CONFIG_ACPI_BLACKLIST_YEAR
80
81 static int __init blacklist_by_year(void)
82 {
83         int year;
84
85         /* Doesn't exist? Likely an old system */
86         if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {
87                 printk(KERN_ERR PREFIX "no DMI BIOS year, "
88                         "acpi=force is required to enable ACPI\n" );
89                 return 1;
90         }
91         /* 0? Likely a buggy new BIOS */
92         if (year == 0) {
93                 printk(KERN_ERR PREFIX "DMI BIOS year==0, "
94                         "assuming ACPI-capable machine\n" );
95                 return 0;
96         }
97         if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
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);
101                 return 1;
102         }
103         return 0;
104 }
105 #else
106 static inline int blacklist_by_year(void)
107 {
108         return 0;
109 }
110 #endif
111
112 int __init acpi_blacklisted(void)
113 {
114         int i = 0;
115         int blacklisted = 0;
116         struct acpi_table_header table_header;
117
118         while (acpi_blacklist[i].oem_id[0] != '\0') {
119                 if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
120                         i++;
121                         continue;
122                 }
123
124                 if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
125                         i++;
126                         continue;
127                 }
128
129                 if (strncmp
130                     (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
131                      8)) {
132                         i++;
133                         continue;
134                 }
135
136                 if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
137                     || (acpi_blacklist[i].oem_revision_predicate ==
138                         less_than_or_equal
139                         && table_header.oem_revision <=
140                         acpi_blacklist[i].oem_revision)
141                     || (acpi_blacklist[i].oem_revision_predicate ==
142                         greater_than_or_equal
143                         && table_header.oem_revision >=
144                         acpi_blacklist[i].oem_revision)
145                     || (acpi_blacklist[i].oem_revision_predicate == equal
146                         && table_header.oem_revision ==
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"));
162
163                         blacklisted = acpi_blacklist[i].is_critical_error;
164                         break;
165                 } else {
166                         i++;
167                 }
168         }
169
170         blacklisted += blacklist_by_year();
171
172         dmi_check_system(acpi_osi_dmi_table);
173
174         return blacklisted;
175 }
176 #ifdef CONFIG_DMI
177 static 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 }
182 static 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         acpi_osi_setup("!Windows 2006 SP1");
187         acpi_osi_setup("!Windows 2006 SP2");
188         return 0;
189 }
190 static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
191 {
192         printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
193         acpi_osi_setup("!Windows 2009");
194         return 0;
195 }
196
197 static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
198         {
199         .callback = dmi_disable_osi_vista,
200         .ident = "Fujitsu Siemens",
201         .matches = {
202                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
203                      DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
204                 },
205         },
206         {
207         /*
208          * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
209          * driver (e.g. nouveau) when user press brightness hotkey.
210          * Currently, nouveau driver didn't do the job and it causes there
211          * have a infinite while loop in DSDT when user press hotkey.
212          * We add MSI GX723's dmi information to this table for workaround
213          * this issue.
214          * Will remove MSI GX723 from the table after nouveau grows support.
215          */
216         .callback = dmi_disable_osi_vista,
217         .ident = "MSI GX723",
218         .matches = {
219                      DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
220                      DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
221                 },
222         },
223         {
224         .callback = dmi_disable_osi_vista,
225         .ident = "Sony VGN-NS10J_S",
226         .matches = {
227                      DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
228                      DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
229                 },
230         },
231         {
232         .callback = dmi_disable_osi_vista,
233         .ident = "Sony VGN-SR290J",
234         .matches = {
235                      DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
236                      DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
237                 },
238         },
239         {
240         .callback = dmi_disable_osi_vista,
241         .ident = "VGN-NS50B_L",
242         .matches = {
243                      DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
244                      DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
245                 },
246         },
247         {
248         .callback = dmi_disable_osi_vista,
249         .ident = "Toshiba Satellite L355",
250         .matches = {
251                      DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
252                      DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
253                 },
254         },
255         {
256         .callback = dmi_disable_osi_win7,
257         .ident = "ASUS K50IJ",
258         .matches = {
259                      DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
260                      DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
261                 },
262         },
263         {
264         .callback = dmi_disable_osi_vista,
265         .ident = "Toshiba P305D",
266         .matches = {
267                      DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
268                      DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
269                 },
270         },
271
272         /*
273          * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
274          * Linux ignores it, except for the machines enumerated below.
275          */
276
277         /*
278          * Lenovo has a mix of systems OSI(Linux) situations
279          * and thus we can not wildcard the vendor.
280          *
281          * _OSI(Linux) helps sound
282          * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
283          * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
284          * T400, T500
285          * _OSI(Linux) has Linux specific hooks
286          * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
287          * _OSI(Linux) is a NOP:
288          * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
289          * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
290          */
291         {
292         .callback = dmi_enable_osi_linux,
293         .ident = "Lenovo ThinkPad R61",
294         .matches = {
295                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
296                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
297                 },
298         },
299         {
300         .callback = dmi_enable_osi_linux,
301         .ident = "Lenovo ThinkPad T61",
302         .matches = {
303                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
304                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
305                 },
306         },
307         {
308         .callback = dmi_enable_osi_linux,
309         .ident = "Lenovo ThinkPad X61",
310         .matches = {
311                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
312                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
313                 },
314         },
315         {
316         .callback = dmi_enable_osi_linux,
317         .ident = "Lenovo ThinkPad T400",
318         .matches = {
319                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
320                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
321                 },
322         },
323         {
324         .callback = dmi_enable_osi_linux,
325         .ident = "Lenovo ThinkPad T500",
326         .matches = {
327                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
328                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
329                 },
330         },
331         {}
332 };
333
334 #endif /* CONFIG_DMI */