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 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 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