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