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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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.
Lv Zhenge5f660e2016-05-03 16:49:01 +08006 * Check given machine against acpi_rev_dmi_table[].
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
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 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <linux/init.h>
28#include <linux/acpi.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/dmi.h>
30
Len Browna192a952009-07-28 16:45:54 -040031#include "internal.h"
32
Len Brown4be44fc2005-08-05 00:44:28 -040033enum acpi_blacklist_predicates {
34 all_versions,
35 less_than_or_equal,
36 equal,
37 greater_than_or_equal,
Linus Torvalds1da177e2005-04-16 15:20:36 -070038};
39
Len Brown4be44fc2005-08-05 00:44:28 -040040struct acpi_blacklist_item {
41 char oem_id[7];
42 char oem_table_id[9];
43 u32 oem_revision;
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030044 char *table;
Len Brown4be44fc2005-08-05 00:44:28 -040045 enum acpi_blacklist_predicates oem_revision_predicate;
46 char *reason;
47 u32 is_critical_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070048};
49
Lv Zhenge5f660e2016-05-03 16:49:01 +080050static struct dmi_system_id acpi_rev_dmi_table[] __initdata;
Len Brownd4b7dc42008-01-23 20:50:56 -050051
Linus Torvalds1da177e2005-04-16 15:20:36 -070052/*
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 */
Len Brown4be44fc2005-08-05 00:44:28 -040056static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 /* Compaq Presario 1700 */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030058 {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
Len Brown4be44fc2005-08-05 00:44:28 -040059 "Multiple problems", 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 /* Sony FX120, FX140, FX150? */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030061 {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
Len Brown4be44fc2005-08-05 00:44:28 -040062 "ACPI driver problem", 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 /* Compaq Presario 800, Insyde BIOS */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030064 {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
Len Brown4be44fc2005-08-05 00:44:28 -040065 "Does not use _REG to protect EC OpRegions", 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 /* IBM 600E - _ADR should return 7, but it returns 1 */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030067 {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
Len Brown4be44fc2005-08-05 00:44:28 -040068 "Incorrect _ADR", 1},
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
70 {""}
71};
72
Len Brown4be44fc2005-08-05 00:44:28 -040073int __init acpi_blacklisted(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070074{
75 int i = 0;
76 int blacklisted = 0;
Alexey Starikovskiy428f2112007-02-02 19:48:22 +030077 struct acpi_table_header table_header;
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
Len Brown4be44fc2005-08-05 00:44:28 -040079 while (acpi_blacklist[i].oem_id[0] != '\0') {
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030080 if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 i++;
82 continue;
83 }
84
Alexey Starikovskiy428f2112007-02-02 19:48:22 +030085 if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 i++;
87 continue;
88 }
89
Len Brown4be44fc2005-08-05 00:44:28 -040090 if (strncmp
Alexey Starikovskiy428f2112007-02-02 19:48:22 +030091 (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
Len Brown4be44fc2005-08-05 00:44:28 -040092 8)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 i++;
94 continue;
95 }
96
97 if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
Len Brown4be44fc2005-08-05 00:44:28 -040098 || (acpi_blacklist[i].oem_revision_predicate ==
99 less_than_or_equal
Alexey Starikovskiy428f2112007-02-02 19:48:22 +0300100 && table_header.oem_revision <=
Len Brown4be44fc2005-08-05 00:44:28 -0400101 acpi_blacklist[i].oem_revision)
102 || (acpi_blacklist[i].oem_revision_predicate ==
103 greater_than_or_equal
Alexey Starikovskiy428f2112007-02-02 19:48:22 +0300104 && table_header.oem_revision >=
Len Brown4be44fc2005-08-05 00:44:28 -0400105 acpi_blacklist[i].oem_revision)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 || (acpi_blacklist[i].oem_revision_predicate == equal
Alexey Starikovskiy428f2112007-02-02 19:48:22 +0300107 && table_header.oem_revision ==
Len Brown4be44fc2005-08-05 00:44:28 -0400108 acpi_blacklist[i].oem_revision)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
Len Brown4be44fc2005-08-05 00:44:28 -0400110 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116
Len Brown4be44fc2005-08-05 00:44:28 -0400117 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"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123
124 blacklisted = acpi_blacklist[i].is_critical_error;
125 break;
Len Brown4be44fc2005-08-05 00:44:28 -0400126 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 i++;
128 }
129 }
130
Lv Zhenge5f660e2016-05-03 16:49:01 +0800131 (void)early_acpi_osi_init();
132 dmi_check_system(acpi_rev_dmi_table);
Len Brownd4b7dc42008-01-23 20:50:56 -0500133
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 return blacklisted;
135}
Len Brownd4b7dc42008-01-23 20:50:56 -0500136#ifdef CONFIG_DMI
Rafael J. Wysocki18d78b62015-07-03 01:06:00 +0200137#ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
138static 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
Len Browna1bd4e32008-01-23 21:19:27 -0500146
Lv Zhenge5f660e2016-05-03 16:49:01 +0800147static struct dmi_system_id acpi_rev_dmi_table[] __initdata = {
Rafael J. Wysocki18d78b62015-07-03 01:06:00 +0200148#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
Len Brownd4b7dc42008-01-23 20:50:56 -0500164 {}
165};
166
167#endif /* CONFIG_DMI */