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. | |
6 | * | |
7 | * Copyright (C) 2004 Len Brown <len.brown@intel.com> | |
8 | * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com> | |
9 | * | |
10 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or (at | |
15 | * your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License along | |
23 | * with this program; if not, write to the Free Software Foundation, Inc., | |
24 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
25 | * | |
26 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
27 | */ | |
28 | ||
1da177e4 LT |
29 | #include <linux/kernel.h> |
30 | #include <linux/module.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/acpi.h> | |
33 | #include <acpi/acpi_bus.h> | |
34 | #include <linux/dmi.h> | |
35 | ||
4be44fcd LB |
36 | enum acpi_blacklist_predicates { |
37 | all_versions, | |
38 | less_than_or_equal, | |
39 | equal, | |
40 | greater_than_or_equal, | |
1da177e4 LT |
41 | }; |
42 | ||
4be44fcd LB |
43 | struct acpi_blacklist_item { |
44 | char oem_id[7]; | |
45 | char oem_table_id[9]; | |
46 | u32 oem_revision; | |
47 | acpi_table_type table; | |
48 | enum acpi_blacklist_predicates oem_revision_predicate; | |
49 | char *reason; | |
50 | u32 is_critical_error; | |
1da177e4 LT |
51 | }; |
52 | ||
53 | /* | |
54 | * POLICY: If *anything* doesn't work, put it on the blacklist. | |
55 | * If they are critical errors, mark it critical, and abort driver load. | |
56 | */ | |
4be44fcd | 57 | static struct acpi_blacklist_item acpi_blacklist[] __initdata = { |
1da177e4 | 58 | /* Compaq Presario 1700 */ |
4be44fcd LB |
59 | {"PTLTD ", " DSDT ", 0x06040000, ACPI_DSDT, less_than_or_equal, |
60 | "Multiple problems", 1}, | |
1da177e4 | 61 | /* Sony FX120, FX140, FX150? */ |
4be44fcd LB |
62 | {"SONY ", "U0 ", 0x20010313, ACPI_DSDT, less_than_or_equal, |
63 | "ACPI driver problem", 1}, | |
1da177e4 | 64 | /* Compaq Presario 800, Insyde BIOS */ |
4be44fcd LB |
65 | {"INT440", "SYSFexxx", 0x00001001, ACPI_DSDT, less_than_or_equal, |
66 | "Does not use _REG to protect EC OpRegions", 1}, | |
1da177e4 | 67 | /* IBM 600E - _ADR should return 7, but it returns 1 */ |
4be44fcd LB |
68 | {"IBM ", "TP600E ", 0x00000105, ACPI_DSDT, less_than_or_equal, |
69 | "Incorrect _ADR", 1}, | |
70 | {"ASUS\0\0", "P2B-S ", 0, ACPI_DSDT, all_versions, | |
71 | "Bogus PCI routing", 1}, | |
1da177e4 LT |
72 | |
73 | {""} | |
74 | }; | |
75 | ||
1da177e4 LT |
76 | #if CONFIG_ACPI_BLACKLIST_YEAR |
77 | ||
4be44fcd | 78 | static int __init blacklist_by_year(void) |
1da177e4 LT |
79 | { |
80 | int year; | |
81 | char *s = dmi_get_system_info(DMI_BIOS_DATE); | |
82 | ||
83 | if (!s) | |
84 | return 0; | |
85 | if (!*s) | |
86 | return 0; | |
87 | ||
88 | s = strrchr(s, '/'); | |
89 | if (!s) | |
90 | return 0; | |
91 | ||
92 | s += 1; | |
93 | ||
4be44fcd | 94 | year = simple_strtoul(s, NULL, 0); |
1da177e4 | 95 | |
4be44fcd | 96 | if (year < 100) { /* 2-digit year */ |
1da177e4 LT |
97 | year += 1900; |
98 | if (year < 1996) /* no dates < spec 1.0 */ | |
99 | year += 100; | |
100 | } | |
101 | ||
102 | if (year < CONFIG_ACPI_BLACKLIST_YEAR) { | |
4be44fcd LB |
103 | printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), " |
104 | "acpi=force is required to enable ACPI\n", | |
105 | year, CONFIG_ACPI_BLACKLIST_YEAR); | |
1da177e4 LT |
106 | return 1; |
107 | } | |
108 | return 0; | |
109 | } | |
110 | #else | |
4be44fcd LB |
111 | static inline int blacklist_by_year(void) |
112 | { | |
113 | return 0; | |
114 | } | |
1da177e4 LT |
115 | #endif |
116 | ||
4be44fcd | 117 | int __init acpi_blacklisted(void) |
1da177e4 LT |
118 | { |
119 | int i = 0; | |
120 | int blacklisted = 0; | |
121 | struct acpi_table_header *table_header; | |
122 | ||
4be44fcd LB |
123 | while (acpi_blacklist[i].oem_id[0] != '\0') { |
124 | if (acpi_get_table_header_early | |
125 | (acpi_blacklist[i].table, &table_header)) { | |
1da177e4 LT |
126 | i++; |
127 | continue; | |
128 | } | |
129 | ||
130 | if (strncmp(acpi_blacklist[i].oem_id, table_header->oem_id, 6)) { | |
131 | i++; | |
132 | continue; | |
133 | } | |
134 | ||
4be44fcd LB |
135 | if (strncmp |
136 | (acpi_blacklist[i].oem_table_id, table_header->oem_table_id, | |
137 | 8)) { | |
1da177e4 LT |
138 | i++; |
139 | continue; | |
140 | } | |
141 | ||
142 | if ((acpi_blacklist[i].oem_revision_predicate == all_versions) | |
4be44fcd LB |
143 | || (acpi_blacklist[i].oem_revision_predicate == |
144 | less_than_or_equal | |
145 | && table_header->oem_revision <= | |
146 | acpi_blacklist[i].oem_revision) | |
147 | || (acpi_blacklist[i].oem_revision_predicate == | |
148 | greater_than_or_equal | |
149 | && table_header->oem_revision >= | |
150 | acpi_blacklist[i].oem_revision) | |
1da177e4 | 151 | || (acpi_blacklist[i].oem_revision_predicate == equal |
4be44fcd LB |
152 | && table_header->oem_revision == |
153 | acpi_blacklist[i].oem_revision)) { | |
154 | ||
155 | printk(KERN_ERR PREFIX | |
156 | "Vendor \"%6.6s\" System \"%8.8s\" " | |
157 | "Revision 0x%x has a known ACPI BIOS problem.\n", | |
158 | acpi_blacklist[i].oem_id, | |
159 | acpi_blacklist[i].oem_table_id, | |
160 | acpi_blacklist[i].oem_revision); | |
161 | ||
162 | printk(KERN_ERR PREFIX | |
163 | "Reason: %s. This is a %s error\n", | |
164 | acpi_blacklist[i].reason, | |
165 | (acpi_blacklist[i]. | |
166 | is_critical_error ? "non-recoverable" : | |
167 | "recoverable")); | |
1da177e4 LT |
168 | |
169 | blacklisted = acpi_blacklist[i].is_critical_error; | |
170 | break; | |
4be44fcd | 171 | } else { |
1da177e4 LT |
172 | i++; |
173 | } | |
174 | } | |
175 | ||
176 | blacklisted += blacklist_by_year(); | |
177 | ||
178 | return blacklisted; | |
179 | } |