Root/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/init.h>
32#include <linux/acpi.h>
33#include <acpi/acpi_bus.h>
34#include <linux/dmi.h>
35
36#include "internal.h"
37
38enum acpi_blacklist_predicates {
39    all_versions,
40    less_than_or_equal,
41    equal,
42    greater_than_or_equal,
43};
44
45struct 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
55static 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 */
61static 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
80static 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
105static inline int blacklist_by_year(void)
106{
107    return 0;
108}
109#endif
110
111int __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
176static 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}
181static 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}
189static 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
196static 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 */
334

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