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