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_rev_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 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
26 #include <linux/kernel.h>
27 #include <linux/init.h>
28 #include <linux/acpi.h>
29 #include <linux/dmi.h>
30
31 #include "internal.h"
32
33 #ifdef CONFIG_DMI
34 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst;
35 #endif
36
37 /*
38 * POLICY: If *anything* doesn't work, put it on the blacklist.
39 * If they are critical errors, mark it critical, and abort driver load.
40 */
41 static struct acpi_platform_list acpi_blacklist[] __initdata = {
42 /* Compaq Presario 1700 */
43 {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
44 "Multiple problems", 1},
45 /* Sony FX120, FX140, FX150? */
46 {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
47 "ACPI driver problem", 1},
48 /* Compaq Presario 800, Insyde BIOS */
49 {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
50 "Does not use _REG to protect EC OpRegions", 1},
51 /* IBM 600E - _ADR should return 7, but it returns 1 */
52 {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
53 "Incorrect _ADR", 1},
54
55 { }
56 };
57
acpi_blacklisted(void)58 int __init acpi_blacklisted(void)
59 {
60 int i;
61 int blacklisted = 0;
62
63 i = acpi_match_platform_list(acpi_blacklist);
64 if (i >= 0) {
65 pr_err(PREFIX "Vendor \"%6.6s\" System \"%8.8s\" Revision 0x%x has a known ACPI BIOS problem.\n",
66 acpi_blacklist[i].oem_id,
67 acpi_blacklist[i].oem_table_id,
68 acpi_blacklist[i].oem_revision);
69
70 pr_err(PREFIX "Reason: %s. This is a %s error\n",
71 acpi_blacklist[i].reason,
72 (acpi_blacklist[i].data ?
73 "non-recoverable" : "recoverable"));
74
75 blacklisted = acpi_blacklist[i].data;
76 }
77
78 (void)early_acpi_osi_init();
79 #ifdef CONFIG_DMI
80 dmi_check_system(acpi_rev_dmi_table);
81 #endif
82
83 return blacklisted;
84 }
85 #ifdef CONFIG_DMI
86 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
dmi_enable_rev_override(const struct dmi_system_id * d)87 static int __init dmi_enable_rev_override(const struct dmi_system_id *d)
88 {
89 printk(KERN_NOTICE PREFIX "DMI detected: %s (force ACPI _REV to 5)\n",
90 d->ident);
91 acpi_rev_override_setup(NULL);
92 return 0;
93 }
94 #endif
95
96 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = {
97 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
98 /*
99 * DELL XPS 13 (2015) switches sound between HDA and I2S
100 * depending on the ACPI _REV callback. If userspace supports
101 * I2S sufficiently (or if you do not care about sound), you
102 * can safely disable this quirk.
103 */
104 {
105 .callback = dmi_enable_rev_override,
106 .ident = "DELL XPS 13 (2015)",
107 .matches = {
108 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
109 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"),
110 },
111 },
112 {
113 .callback = dmi_enable_rev_override,
114 .ident = "DELL Precision 5520",
115 .matches = {
116 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
117 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"),
118 },
119 },
120 {
121 .callback = dmi_enable_rev_override,
122 .ident = "DELL Precision 3520",
123 .matches = {
124 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
125 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"),
126 },
127 },
128 /*
129 * Resolves a quirk with the Dell Latitude 3350 that
130 * causes the ethernet adapter to not function.
131 */
132 {
133 .callback = dmi_enable_rev_override,
134 .ident = "DELL Latitude 3350",
135 .matches = {
136 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
137 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"),
138 },
139 },
140 {
141 .callback = dmi_enable_rev_override,
142 .ident = "DELL Inspiron 7537",
143 .matches = {
144 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
145 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
146 },
147 },
148 #endif
149 {}
150 };
151
152 #endif /* CONFIG_DMI */
153