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	{"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
36	 "ACPI driver problem", 1},
37	/* Compaq Presario 800, Insyde BIOS */
38	{"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
39	 "Does not use _REG to protect EC OpRegions", 1},
40	/* IBM 600E - _ADR should return 7, but it returns 1 */
41	{"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
42	 "Incorrect _ADR", 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(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(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