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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * blacklist.c4 *5 * Check to see if the given machine has a known bad ACPI BIOS6 * 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: " fmt14 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_DMI23static const struct dmi_system_id acpi_rev_dmi_table[] __initconst;24#endif25 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_DMI69 dmi_check_system(acpi_rev_dmi_table);70#endif71 72 return blacklisted;73}74#ifdef CONFIG_DMI75#ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE76static 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#endif83 84static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = {85#ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE86 /*87 * DELL XPS 13 (2015) switches sound between HDA and I2S88 * depending on the ACPI _REV callback. If userspace supports89 * I2S sufficiently (or if you do not care about sound), you90 * 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 that118 * 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#endif137 {}138};139 140#endif /* CONFIG_DMI */141