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blacklist.c
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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/init.h>
32 #include <linux/acpi.h>
33 #include <acpi/acpi_bus.h>
34 #include <linux/dmi.h>
35 
36 #include "internal.h"
37 
38 enum acpi_blacklist_predicates {
39  all_versions,
40  less_than_or_equal,
41  equal,
42  greater_than_or_equal,
43 };
44 
45 struct acpi_blacklist_item {
46  char oem_id[7];
47  char oem_table_id[9];
48  u32 oem_revision;
49  char *table;
50  enum acpi_blacklist_predicates oem_revision_predicate;
51  char *reason;
52  u32 is_critical_error;
53 };
54 
55 static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
56 
57 /*
58  * POLICY: If *anything* doesn't work, put it on the blacklist.
59  * If they are critical errors, mark it critical, and abort driver load.
60  */
61 static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
62  /* Compaq Presario 1700 */
63  {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
64  "Multiple problems", 1},
65  /* Sony FX120, FX140, FX150? */
66  {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
67  "ACPI driver problem", 1},
68  /* Compaq Presario 800, Insyde BIOS */
69  {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
70  "Does not use _REG to protect EC OpRegions", 1},
71  /* IBM 600E - _ADR should return 7, but it returns 1 */
72  {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
73  "Incorrect _ADR", 1},
74 
75  {""}
76 };
77 
78 #if CONFIG_ACPI_BLACKLIST_YEAR
79 
80 static int __init blacklist_by_year(void)
81 {
82  int year;
83 
84  /* Doesn't exist? Likely an old system */
85  if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {
86  printk(KERN_ERR PREFIX "no DMI BIOS year, "
87  "acpi=force is required to enable ACPI\n" );
88  return 1;
89  }
90  /* 0? Likely a buggy new BIOS */
91  if (year == 0) {
92  printk(KERN_ERR PREFIX "DMI BIOS year==0, "
93  "assuming ACPI-capable machine\n" );
94  return 0;
95  }
96  if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
97  printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
98  "acpi=force is required to enable ACPI\n",
99  year, CONFIG_ACPI_BLACKLIST_YEAR);
100  return 1;
101  }
102  return 0;
103 }
104 #else
105 static inline int blacklist_by_year(void)
106 {
107  return 0;
108 }
109 #endif
110 
111 int __init acpi_blacklisted(void)
112 {
113  int i = 0;
114  int blacklisted = 0;
115  struct acpi_table_header table_header;
116 
117  while (acpi_blacklist[i].oem_id[0] != '\0') {
118  if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
119  i++;
120  continue;
121  }
122 
123  if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
124  i++;
125  continue;
126  }
127 
128  if (strncmp
129  (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
130  8)) {
131  i++;
132  continue;
133  }
134 
135  if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
136  || (acpi_blacklist[i].oem_revision_predicate ==
137  less_than_or_equal
138  && table_header.oem_revision <=
139  acpi_blacklist[i].oem_revision)
140  || (acpi_blacklist[i].oem_revision_predicate ==
141  greater_than_or_equal
142  && table_header.oem_revision >=
143  acpi_blacklist[i].oem_revision)
144  || (acpi_blacklist[i].oem_revision_predicate == equal
145  && table_header.oem_revision ==
146  acpi_blacklist[i].oem_revision)) {
147 
148  printk(KERN_ERR PREFIX
149  "Vendor \"%6.6s\" System \"%8.8s\" "
150  "Revision 0x%x has a known ACPI BIOS problem.\n",
151  acpi_blacklist[i].oem_id,
152  acpi_blacklist[i].oem_table_id,
153  acpi_blacklist[i].oem_revision);
154 
155  printk(KERN_ERR PREFIX
156  "Reason: %s. This is a %s error\n",
157  acpi_blacklist[i].reason,
158  (acpi_blacklist[i].
159  is_critical_error ? "non-recoverable" :
160  "recoverable"));
161 
162  blacklisted = acpi_blacklist[i].is_critical_error;
163  break;
164  } else {
165  i++;
166  }
167  }
168 
169  blacklisted += blacklist_by_year();
170 
171  dmi_check_system(acpi_osi_dmi_table);
172 
173  return blacklisted;
174 }
175 #ifdef CONFIG_DMI
176 static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
177 {
178  acpi_dmi_osi_linux(1, d); /* enable */
179  return 0;
180 }
181 static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
182 {
183  printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
184  acpi_osi_setup("!Windows 2006");
185  acpi_osi_setup("!Windows 2006 SP1");
186  acpi_osi_setup("!Windows 2006 SP2");
187  return 0;
188 }
189 static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
190 {
191  printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
192  acpi_osi_setup("!Windows 2009");
193  return 0;
194 }
195 
196 static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
197  {
198  .callback = dmi_disable_osi_vista,
199  .ident = "Fujitsu Siemens",
200  .matches = {
201  DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
202  DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
203  },
204  },
205  {
206  /*
207  * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
208  * driver (e.g. nouveau) when user press brightness hotkey.
209  * Currently, nouveau driver didn't do the job and it causes there
210  * have a infinite while loop in DSDT when user press hotkey.
211  * We add MSI GX723's dmi information to this table for workaround
212  * this issue.
213  * Will remove MSI GX723 from the table after nouveau grows support.
214  */
215  .callback = dmi_disable_osi_vista,
216  .ident = "MSI GX723",
217  .matches = {
218  DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
219  DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
220  },
221  },
222  {
223  .callback = dmi_disable_osi_vista,
224  .ident = "Sony VGN-NS10J_S",
225  .matches = {
226  DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
227  DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
228  },
229  },
230  {
231  .callback = dmi_disable_osi_vista,
232  .ident = "Sony VGN-SR290J",
233  .matches = {
234  DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
235  DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
236  },
237  },
238  {
239  .callback = dmi_disable_osi_vista,
240  .ident = "VGN-NS50B_L",
241  .matches = {
242  DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
243  DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
244  },
245  },
246  {
247  .callback = dmi_disable_osi_vista,
248  .ident = "Toshiba Satellite L355",
249  .matches = {
250  DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
251  DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
252  },
253  },
254  {
255  .callback = dmi_disable_osi_win7,
256  .ident = "ASUS K50IJ",
257  .matches = {
258  DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
259  DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
260  },
261  },
262  {
263  .callback = dmi_disable_osi_vista,
264  .ident = "Toshiba P305D",
265  .matches = {
266  DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
267  DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
268  },
269  },
270 
271  /*
272  * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
273  * Linux ignores it, except for the machines enumerated below.
274  */
275 
276  /*
277  * Lenovo has a mix of systems OSI(Linux) situations
278  * and thus we can not wildcard the vendor.
279  *
280  * _OSI(Linux) helps sound
281  * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
282  * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
283  * T400, T500
284  * _OSI(Linux) has Linux specific hooks
285  * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
286  * _OSI(Linux) is a NOP:
287  * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
288  * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
289  */
290  {
291  .callback = dmi_enable_osi_linux,
292  .ident = "Lenovo ThinkPad R61",
293  .matches = {
294  DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
295  DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
296  },
297  },
298  {
299  .callback = dmi_enable_osi_linux,
300  .ident = "Lenovo ThinkPad T61",
301  .matches = {
302  DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
303  DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
304  },
305  },
306  {
307  .callback = dmi_enable_osi_linux,
308  .ident = "Lenovo ThinkPad X61",
309  .matches = {
310  DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
311  DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
312  },
313  },
314  {
315  .callback = dmi_enable_osi_linux,
316  .ident = "Lenovo ThinkPad T400",
317  .matches = {
318  DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
319  DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
320  },
321  },
322  {
323  .callback = dmi_enable_osi_linux,
324  .ident = "Lenovo ThinkPad T500",
325  .matches = {
326  DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
327  DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
328  },
329  },
330  {}
331 };
332 
333 #endif /* CONFIG_DMI */
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