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. | |
e5f660eb | 6 | * Check given machine against acpi_rev_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 | * | |
1da177e4 LT |
23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
24 | */ | |
25 | ||
1da177e4 | 26 | #include <linux/kernel.h> |
1da177e4 LT |
27 | #include <linux/init.h> |
28 | #include <linux/acpi.h> | |
1da177e4 LT |
29 | #include <linux/dmi.h> |
30 | ||
a192a958 LB |
31 | #include "internal.h" |
32 | ||
4be44fcd LB |
33 | enum acpi_blacklist_predicates { |
34 | all_versions, | |
35 | less_than_or_equal, | |
36 | equal, | |
37 | greater_than_or_equal, | |
1da177e4 LT |
38 | }; |
39 | ||
4be44fcd LB |
40 | struct acpi_blacklist_item { |
41 | char oem_id[7]; | |
42 | char oem_table_id[9]; | |
43 | u32 oem_revision; | |
ad71860a | 44 | char *table; |
4be44fcd LB |
45 | enum acpi_blacklist_predicates oem_revision_predicate; |
46 | char *reason; | |
47 | u32 is_critical_error; | |
1da177e4 LT |
48 | }; |
49 | ||
e5f660eb | 50 | static struct dmi_system_id acpi_rev_dmi_table[] __initdata; |
d4b7dc49 | 51 | |
1da177e4 LT |
52 | /* |
53 | * POLICY: If *anything* doesn't work, put it on the blacklist. | |
54 | * If they are critical errors, mark it critical, and abort driver load. | |
55 | */ | |
4be44fcd | 56 | static struct acpi_blacklist_item acpi_blacklist[] __initdata = { |
1da177e4 | 57 | /* Compaq Presario 1700 */ |
ad71860a | 58 | {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal, |
4be44fcd | 59 | "Multiple problems", 1}, |
1da177e4 | 60 | /* Sony FX120, FX140, FX150? */ |
ad71860a | 61 | {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal, |
4be44fcd | 62 | "ACPI driver problem", 1}, |
1da177e4 | 63 | /* Compaq Presario 800, Insyde BIOS */ |
ad71860a | 64 | {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal, |
4be44fcd | 65 | "Does not use _REG to protect EC OpRegions", 1}, |
1da177e4 | 66 | /* IBM 600E - _ADR should return 7, but it returns 1 */ |
ad71860a | 67 | {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal, |
4be44fcd | 68 | "Incorrect _ADR", 1}, |
1da177e4 LT |
69 | |
70 | {""} | |
71 | }; | |
72 | ||
4be44fcd | 73 | int __init acpi_blacklisted(void) |
1da177e4 LT |
74 | { |
75 | int i = 0; | |
76 | int blacklisted = 0; | |
428f2112 | 77 | struct acpi_table_header table_header; |
1da177e4 | 78 | |
4be44fcd | 79 | while (acpi_blacklist[i].oem_id[0] != '\0') { |
ad71860a | 80 | if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) { |
1da177e4 LT |
81 | i++; |
82 | continue; | |
83 | } | |
84 | ||
428f2112 | 85 | if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) { |
1da177e4 LT |
86 | i++; |
87 | continue; | |
88 | } | |
89 | ||
4be44fcd | 90 | if (strncmp |
428f2112 | 91 | (acpi_blacklist[i].oem_table_id, table_header.oem_table_id, |
4be44fcd | 92 | 8)) { |
1da177e4 LT |
93 | i++; |
94 | continue; | |
95 | } | |
96 | ||
97 | if ((acpi_blacklist[i].oem_revision_predicate == all_versions) | |
4be44fcd LB |
98 | || (acpi_blacklist[i].oem_revision_predicate == |
99 | less_than_or_equal | |
428f2112 | 100 | && table_header.oem_revision <= |
4be44fcd LB |
101 | acpi_blacklist[i].oem_revision) |
102 | || (acpi_blacklist[i].oem_revision_predicate == | |
103 | greater_than_or_equal | |
428f2112 | 104 | && table_header.oem_revision >= |
4be44fcd | 105 | acpi_blacklist[i].oem_revision) |
1da177e4 | 106 | || (acpi_blacklist[i].oem_revision_predicate == equal |
428f2112 | 107 | && table_header.oem_revision == |
4be44fcd LB |
108 | acpi_blacklist[i].oem_revision)) { |
109 | ||
110 | printk(KERN_ERR PREFIX | |
111 | "Vendor \"%6.6s\" System \"%8.8s\" " | |
112 | "Revision 0x%x has a known ACPI BIOS problem.\n", | |
113 | acpi_blacklist[i].oem_id, | |
114 | acpi_blacklist[i].oem_table_id, | |
115 | acpi_blacklist[i].oem_revision); | |
116 | ||
117 | printk(KERN_ERR PREFIX | |
118 | "Reason: %s. This is a %s error\n", | |
119 | acpi_blacklist[i].reason, | |
120 | (acpi_blacklist[i]. | |
121 | is_critical_error ? "non-recoverable" : | |
122 | "recoverable")); | |
1da177e4 LT |
123 | |
124 | blacklisted = acpi_blacklist[i].is_critical_error; | |
125 | break; | |
4be44fcd | 126 | } else { |
1da177e4 LT |
127 | i++; |
128 | } | |
129 | } | |
130 | ||
e5f660eb LZ |
131 | (void)early_acpi_osi_init(); |
132 | dmi_check_system(acpi_rev_dmi_table); | |
d4b7dc49 | 133 | |
1da177e4 LT |
134 | return blacklisted; |
135 | } | |
d4b7dc49 | 136 | #ifdef CONFIG_DMI |
18d78b64 RW |
137 | #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE |
138 | static int __init dmi_enable_rev_override(const struct dmi_system_id *d) | |
139 | { | |
140 | printk(KERN_NOTICE PREFIX "DMI detected: %s (force ACPI _REV to 5)\n", | |
141 | d->ident); | |
142 | acpi_rev_override_setup(NULL); | |
143 | return 0; | |
144 | } | |
145 | #endif | |
a1bd4e35 | 146 | |
e5f660eb | 147 | static struct dmi_system_id acpi_rev_dmi_table[] __initdata = { |
18d78b64 RW |
148 | #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE |
149 | /* | |
150 | * DELL XPS 13 (2015) switches sound between HDA and I2S | |
151 | * depending on the ACPI _REV callback. If userspace supports | |
152 | * I2S sufficiently (or if you do not care about sound), you | |
153 | * can safely disable this quirk. | |
154 | */ | |
155 | { | |
156 | .callback = dmi_enable_rev_override, | |
157 | .ident = "DELL XPS 13 (2015)", | |
158 | .matches = { | |
159 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
160 | DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"), | |
161 | }, | |
162 | }, | |
163 | #endif | |
d4b7dc49 LB |
164 | {} |
165 | }; | |
166 | ||
167 | #endif /* CONFIG_DMI */ |