Commit | Line | Data |
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1da177e4 LT |
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. | |
d4b7dc49 | 6 | * Check given machine against acpi_osi_dmi_table[]. |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
4be44fcd LB |
37 | enum acpi_blacklist_predicates { |
38 | all_versions, | |
39 | less_than_or_equal, | |
40 | equal, | |
41 | greater_than_or_equal, | |
1da177e4 LT |
42 | }; |
43 | ||
4be44fcd LB |
44 | struct acpi_blacklist_item { |
45 | char oem_id[7]; | |
46 | char oem_table_id[9]; | |
47 | u32 oem_revision; | |
ad71860a | 48 | char *table; |
4be44fcd LB |
49 | enum acpi_blacklist_predicates oem_revision_predicate; |
50 | char *reason; | |
51 | u32 is_critical_error; | |
1da177e4 LT |
52 | }; |
53 | ||
d4b7dc49 LB |
54 | static struct dmi_system_id acpi_osi_dmi_table[] __initdata; |
55 | ||
1da177e4 LT |
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 | */ | |
4be44fcd | 60 | static struct acpi_blacklist_item acpi_blacklist[] __initdata = { |
1da177e4 | 61 | /* Compaq Presario 1700 */ |
ad71860a | 62 | {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal, |
4be44fcd | 63 | "Multiple problems", 1}, |
1da177e4 | 64 | /* Sony FX120, FX140, FX150? */ |
ad71860a | 65 | {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal, |
4be44fcd | 66 | "ACPI driver problem", 1}, |
1da177e4 | 67 | /* Compaq Presario 800, Insyde BIOS */ |
ad71860a | 68 | {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal, |
4be44fcd | 69 | "Does not use _REG to protect EC OpRegions", 1}, |
1da177e4 | 70 | /* IBM 600E - _ADR should return 7, but it returns 1 */ |
ad71860a | 71 | {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal, |
4be44fcd | 72 | "Incorrect _ADR", 1}, |
ad71860a | 73 | {"ASUS\0\0", "P2B-S ", 0, ACPI_SIG_DSDT, all_versions, |
4be44fcd | 74 | "Bogus PCI routing", 1}, |
1da177e4 LT |
75 | |
76 | {""} | |
77 | }; | |
78 | ||
1da177e4 LT |
79 | #if CONFIG_ACPI_BLACKLIST_YEAR |
80 | ||
4be44fcd | 81 | static int __init blacklist_by_year(void) |
1da177e4 | 82 | { |
f083a329 AK |
83 | int year = dmi_get_year(DMI_BIOS_DATE); |
84 | /* Doesn't exist? Likely an old system */ | |
5b27b176 AGACI |
85 | if (year == -1) { |
86 | printk(KERN_ERR PREFIX "no DMI BIOS year, " | |
87 | "acpi=force is required to enable ACPI\n" ); | |
f083a329 | 88 | return 1; |
5b27b176 | 89 | } |
f083a329 | 90 | /* 0? Likely a buggy new BIOS */ |
5b27b176 AGACI |
91 | if (year == 0) { |
92 | printk(KERN_ERR PREFIX "DMI BIOS year==0, " | |
93 | "assuming ACPI-capable machine\n" ); | |
1da177e4 | 94 | return 0; |
5b27b176 | 95 | } |
1da177e4 | 96 | if (year < CONFIG_ACPI_BLACKLIST_YEAR) { |
4be44fcd LB |
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); | |
1da177e4 LT |
100 | return 1; |
101 | } | |
102 | return 0; | |
103 | } | |
104 | #else | |
4be44fcd LB |
105 | static inline int blacklist_by_year(void) |
106 | { | |
107 | return 0; | |
108 | } | |
1da177e4 LT |
109 | #endif |
110 | ||
4be44fcd | 111 | int __init acpi_blacklisted(void) |
1da177e4 LT |
112 | { |
113 | int i = 0; | |
114 | int blacklisted = 0; | |
428f2112 | 115 | struct acpi_table_header table_header; |
1da177e4 | 116 | |
4be44fcd | 117 | while (acpi_blacklist[i].oem_id[0] != '\0') { |
ad71860a | 118 | if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) { |
1da177e4 LT |
119 | i++; |
120 | continue; | |
121 | } | |
122 | ||
428f2112 | 123 | if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) { |
1da177e4 LT |
124 | i++; |
125 | continue; | |
126 | } | |
127 | ||
4be44fcd | 128 | if (strncmp |
428f2112 | 129 | (acpi_blacklist[i].oem_table_id, table_header.oem_table_id, |
4be44fcd | 130 | 8)) { |
1da177e4 LT |
131 | i++; |
132 | continue; | |
133 | } | |
134 | ||
135 | if ((acpi_blacklist[i].oem_revision_predicate == all_versions) | |
4be44fcd LB |
136 | || (acpi_blacklist[i].oem_revision_predicate == |
137 | less_than_or_equal | |
428f2112 | 138 | && table_header.oem_revision <= |
4be44fcd LB |
139 | acpi_blacklist[i].oem_revision) |
140 | || (acpi_blacklist[i].oem_revision_predicate == | |
141 | greater_than_or_equal | |
428f2112 | 142 | && table_header.oem_revision >= |
4be44fcd | 143 | acpi_blacklist[i].oem_revision) |
1da177e4 | 144 | || (acpi_blacklist[i].oem_revision_predicate == equal |
428f2112 | 145 | && table_header.oem_revision == |
4be44fcd LB |
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")); | |
1da177e4 LT |
161 | |
162 | blacklisted = acpi_blacklist[i].is_critical_error; | |
163 | break; | |
4be44fcd | 164 | } else { |
1da177e4 LT |
165 | i++; |
166 | } | |
167 | } | |
168 | ||
169 | blacklisted += blacklist_by_year(); | |
170 | ||
d4b7dc49 LB |
171 | dmi_check_system(acpi_osi_dmi_table); |
172 | ||
1da177e4 LT |
173 | return blacklisted; |
174 | } | |
d4b7dc49 LB |
175 | #ifdef CONFIG_DMI |
176 | static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { | |
177 | {} | |
178 | }; | |
179 | ||
180 | #endif /* CONFIG_DMI */ |