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[].
8 * Copyright (C) 2004 Len Brown <len.brown@intel.com>
9 * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
11 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
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.
27 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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>
39 enum acpi_blacklist_predicates
{
43 greater_than_or_equal
,
46 struct acpi_blacklist_item
{
51 enum acpi_blacklist_predicates oem_revision_predicate
;
53 u32 is_critical_error
;
56 static struct dmi_system_id acpi_osi_dmi_table
[] __initdata
;
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.
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
,
79 #if CONFIG_ACPI_BLACKLIST_YEAR
81 static int __init
blacklist_by_year(void)
83 int year
= dmi_get_year(DMI_BIOS_DATE
);
84 /* Doesn't exist? Likely an old system */
86 printk(KERN_ERR PREFIX
"no DMI BIOS year, "
87 "acpi=force is required to enable ACPI\n" );
90 /* 0? Likely a buggy new BIOS */
92 printk(KERN_ERR PREFIX
"DMI BIOS year==0, "
93 "assuming ACPI-capable machine\n" );
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
);
105 static inline int blacklist_by_year(void)
111 int __init
acpi_blacklisted(void)
115 struct acpi_table_header table_header
;
117 while (acpi_blacklist
[i
].oem_id
[0] != '\0') {
118 if (acpi_get_table_header(acpi_blacklist
[i
].table
, 0, &table_header
)) {
123 if (strncmp(acpi_blacklist
[i
].oem_id
, table_header
.oem_id
, 6)) {
129 (acpi_blacklist
[i
].oem_table_id
, table_header
.oem_table_id
,
135 if ((acpi_blacklist
[i
].oem_revision_predicate
== all_versions
)
136 || (acpi_blacklist
[i
].oem_revision_predicate
==
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
)) {
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
);
155 printk(KERN_ERR PREFIX
156 "Reason: %s. This is a %s error\n",
157 acpi_blacklist
[i
].reason
,
159 is_critical_error
? "non-recoverable" :
162 blacklisted
= acpi_blacklist
[i
].is_critical_error
;
169 blacklisted
+= blacklist_by_year();
171 dmi_check_system(acpi_osi_dmi_table
);
176 static int __init
dmi_enable_osi_linux(const struct dmi_system_id
*d
)
178 acpi_dmi_osi_linux(1, d
); /* enable */
181 static int __init
dmi_disable_osi_vista(const struct dmi_system_id
*d
)
183 printk(KERN_NOTICE PREFIX
"DMI detected: %s\n", d
->ident
);
184 acpi_osi_setup("!Windows 2006");
188 static struct dmi_system_id acpi_osi_dmi_table
[] __initdata
= {
190 .callback
= dmi_disable_osi_vista
,
191 .ident
= "Fujitsu Siemens",
193 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU SIEMENS"),
194 DMI_MATCH(DMI_PRODUCT_NAME
, "ESPRIMO Mobile V5505"),
198 .callback
= dmi_disable_osi_vista
,
199 .ident
= "Sony VGN-NS10J_S",
201 DMI_MATCH(DMI_SYS_VENDOR
, "Sony Corporation"),
202 DMI_MATCH(DMI_PRODUCT_NAME
, "VGN-NS10J_S"),
206 .callback
= dmi_disable_osi_vista
,
207 .ident
= "Sony VGN-SR290J",
209 DMI_MATCH(DMI_SYS_VENDOR
, "Sony Corporation"),
210 DMI_MATCH(DMI_PRODUCT_NAME
, "Sony VGN-SR290J"),
215 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
216 * Linux ignores it, except for the machines enumerated below.
220 * Lenovo has a mix of systems OSI(Linux) situations
221 * and thus we can not wildcard the vendor.
223 * _OSI(Linux) helps sound
224 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
225 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
226 * _OSI(Linux) has Linux specific hooks
227 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
228 * _OSI(Linux) is a NOP:
229 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
230 * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
233 .callback
= dmi_enable_osi_linux
,
234 .ident
= "Lenovo ThinkPad R61",
236 DMI_MATCH(DMI_SYS_VENDOR
, "LENOVO"),
237 DMI_MATCH(DMI_PRODUCT_VERSION
, "ThinkPad R61"),
241 .callback
= dmi_enable_osi_linux
,
242 .ident
= "Lenovo ThinkPad T61",
244 DMI_MATCH(DMI_SYS_VENDOR
, "LENOVO"),
245 DMI_MATCH(DMI_PRODUCT_VERSION
, "ThinkPad T61"),
249 .callback
= dmi_enable_osi_linux
,
250 .ident
= "Lenovo ThinkPad X61",
252 DMI_MATCH(DMI_SYS_VENDOR
, "LENOVO"),
253 DMI_MATCH(DMI_PRODUCT_VERSION
, "ThinkPad X61"),
259 #endif /* CONFIG_DMI */