1 // SPDX-License-Identifier: GPL-2.0-or-later
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[].
9 * Copyright (C) 2004 Len Brown <len.brown@intel.com>
10 * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/acpi.h>
16 #include <linux/dmi.h>
20 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst;
23 * POLICY: If *anything* doesn't work, put it on the blacklist.
24 * If they are critical errors, mark it critical, and abort driver load.
26 static struct acpi_platform_list acpi_blacklist[] __initdata = {
27 /* Compaq Presario 1700 */
28 {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
29 "Multiple problems", 1},
30 /* Sony FX120, FX140, FX150? */
31 {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
32 "ACPI driver problem", 1},
33 /* Compaq Presario 800, Insyde BIOS */
34 {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
35 "Does not use _REG to protect EC OpRegions", 1},
36 /* IBM 600E - _ADR should return 7, but it returns 1 */
37 {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
43 int __init acpi_blacklisted(void)
48 i = acpi_match_platform_list(acpi_blacklist);
50 pr_err(PREFIX "Vendor \"%6.6s\" System \"%8.8s\" Revision 0x%x has a known ACPI BIOS problem.\n",
51 acpi_blacklist[i].oem_id,
52 acpi_blacklist[i].oem_table_id,
53 acpi_blacklist[i].oem_revision);
55 pr_err(PREFIX "Reason: %s. This is a %s error\n",
56 acpi_blacklist[i].reason,
57 (acpi_blacklist[i].data ?
58 "non-recoverable" : "recoverable"));
60 blacklisted = acpi_blacklist[i].data;
63 (void)early_acpi_osi_init();
64 dmi_check_system(acpi_rev_dmi_table);
69 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
70 static int __init dmi_enable_rev_override(const struct dmi_system_id *d)
72 printk(KERN_NOTICE PREFIX "DMI detected: %s (force ACPI _REV to 5)\n",
74 acpi_rev_override_setup(NULL);
79 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = {
80 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
82 * DELL XPS 13 (2015) switches sound between HDA and I2S
83 * depending on the ACPI _REV callback. If userspace supports
84 * I2S sufficiently (or if you do not care about sound), you
85 * can safely disable this quirk.
88 .callback = dmi_enable_rev_override,
89 .ident = "DELL XPS 13 (2015)",
91 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
92 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"),
96 .callback = dmi_enable_rev_override,
97 .ident = "DELL Precision 5520",
99 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
100 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"),
104 .callback = dmi_enable_rev_override,
105 .ident = "DELL Precision 3520",
107 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
108 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"),
112 * Resolves a quirk with the Dell Latitude 3350 that
113 * causes the ethernet adapter to not function.
116 .callback = dmi_enable_rev_override,
117 .ident = "DELL Latitude 3350",
119 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
120 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"),
124 .callback = dmi_enable_rev_override,
125 .ident = "DELL Inspiron 7537",
127 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
128 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
135 #endif /* CONFIG_DMI */