1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * blacklist.c
4 *
5 * Check to see if the given machine has a known bad ACPI BIOS
6 * or if the BIOS is too old.
7 * Check given machine against acpi_rev_dmi_table[].
8 *
9 * Copyright (C) 2004 Len Brown <len.brown@intel.com>
10 * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
11 */
12
13#define pr_fmt(fmt) "ACPI: " fmt
14
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/acpi.h>
18#include <linux/dmi.h>
19
20#include "../internal.h"
21
22#ifdef CONFIG_DMI
23static const struct dmi_system_id acpi_rev_dmi_table[] __initconst;
24#endif
25
26/*
27 * POLICY: If *anything* doesn't work, put it on the blacklist.
28 * If they are critical errors, mark it critical, and abort driver load.
29 */
30static struct acpi_platform_list acpi_blacklist[] __initdata = {
31 /* Compaq Presario 1700 */
32 {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
33 "Multiple problems", 1},
34 /* Sony FX120, FX140, FX150? */
35 {.oem_id: "SONY ", .oem_table_id: "U0 ", .oem_revision: 0x20010313, ACPI_SIG_DSDT, .pred: less_than_or_equal,
36 .reason: "ACPI driver problem", .data: 1},
37 /* Compaq Presario 800, Insyde BIOS */
38 {.oem_id: "INT440", .oem_table_id: "SYSFexxx", .oem_revision: 0x00001001, ACPI_SIG_DSDT, .pred: less_than_or_equal,
39 .reason: "Does not use _REG to protect EC OpRegions", .data: 1},
40 /* IBM 600E - _ADR should return 7, but it returns 1 */
41 {.oem_id: "IBM ", .oem_table_id: "TP600E ", .oem_revision: 0x00000105, ACPI_SIG_DSDT, .pred: less_than_or_equal,
42 .reason: "Incorrect _ADR", .data: 1},
43
44 { }
45};
46
47int __init acpi_blacklisted(void)
48{
49 int i;
50 int blacklisted = 0;
51
52 i = acpi_match_platform_list(plat: acpi_blacklist);
53 if (i >= 0) {
54 pr_err("Vendor \"%6.6s\" System \"%8.8s\" Revision 0x%x has a known ACPI BIOS problem.\n",
55 acpi_blacklist[i].oem_id,
56 acpi_blacklist[i].oem_table_id,
57 acpi_blacklist[i].oem_revision);
58
59 pr_err("Reason: %s. This is a %s error\n",
60 acpi_blacklist[i].reason,
61 (acpi_blacklist[i].data ?
62 "non-recoverable" : "recoverable"));
63
64 blacklisted = acpi_blacklist[i].data;
65 }
66
67 (void)early_acpi_osi_init();
68#ifdef CONFIG_DMI
69 dmi_check_system(list: acpi_rev_dmi_table);
70#endif
71
72 return blacklisted;
73}
74#ifdef CONFIG_DMI
75#ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
76static int __init dmi_enable_rev_override(const struct dmi_system_id *d)
77{
78 pr_notice("DMI detected: %s (force ACPI _REV to 5)\n", d->ident);
79 acpi_rev_override_setup(NULL);
80 return 0;
81}
82#endif
83
84static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = {
85#ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
86 /*
87 * DELL XPS 13 (2015) switches sound between HDA and I2S
88 * depending on the ACPI _REV callback. If userspace supports
89 * I2S sufficiently (or if you do not care about sound), you
90 * can safely disable this quirk.
91 */
92 {
93 .callback = dmi_enable_rev_override,
94 .ident = "DELL XPS 13 (2015)",
95 .matches = {
96 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
97 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"),
98 },
99 },
100 {
101 .callback = dmi_enable_rev_override,
102 .ident = "DELL Precision 5520",
103 .matches = {
104 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
105 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"),
106 },
107 },
108 {
109 .callback = dmi_enable_rev_override,
110 .ident = "DELL Precision 3520",
111 .matches = {
112 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
113 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"),
114 },
115 },
116 /*
117 * Resolves a quirk with the Dell Latitude 3350 that
118 * causes the ethernet adapter to not function.
119 */
120 {
121 .callback = dmi_enable_rev_override,
122 .ident = "DELL Latitude 3350",
123 .matches = {
124 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
125 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"),
126 },
127 },
128 {
129 .callback = dmi_enable_rev_override,
130 .ident = "DELL Inspiron 7537",
131 .matches = {
132 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
133 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
134 },
135 },
136#endif
137 {}
138};
139
140#endif /* CONFIG_DMI */
141