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 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst; 21 22 /* 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. 25 */ 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, 38 "Incorrect _ADR", 1}, 39 40 { } 41 }; 42 43 int __init acpi_blacklisted(void) 44 { 45 int i; 46 int blacklisted = 0; 47 48 i = acpi_match_platform_list(acpi_blacklist); 49 if (i >= 0) { 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); 54 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")); 59 60 blacklisted = acpi_blacklist[i].data; 61 } 62 63 (void)early_acpi_osi_init(); 64 dmi_check_system(acpi_rev_dmi_table); 65 66 return blacklisted; 67 } 68 #ifdef CONFIG_DMI 69 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE 70 static int __init dmi_enable_rev_override(const struct dmi_system_id *d) 71 { 72 printk(KERN_NOTICE PREFIX "DMI detected: %s (force ACPI _REV to 5)\n", 73 d->ident); 74 acpi_rev_override_setup(NULL); 75 return 0; 76 } 77 #endif 78 79 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = { 80 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE 81 /* 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. 86 */ 87 { 88 .callback = dmi_enable_rev_override, 89 .ident = "DELL XPS 13 (2015)", 90 .matches = { 91 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 92 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"), 93 }, 94 }, 95 { 96 .callback = dmi_enable_rev_override, 97 .ident = "DELL Precision 5520", 98 .matches = { 99 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 100 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"), 101 }, 102 }, 103 { 104 .callback = dmi_enable_rev_override, 105 .ident = "DELL Precision 3520", 106 .matches = { 107 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 108 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"), 109 }, 110 }, 111 /* 112 * Resolves a quirk with the Dell Latitude 3350 that 113 * causes the ethernet adapter to not function. 114 */ 115 { 116 .callback = dmi_enable_rev_override, 117 .ident = "DELL Latitude 3350", 118 .matches = { 119 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 120 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"), 121 }, 122 }, 123 { 124 .callback = dmi_enable_rev_override, 125 .ident = "DELL Inspiron 7537", 126 .matches = { 127 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 128 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"), 129 }, 130 }, 131 #endif 132 {} 133 }; 134 135 #endif /* CONFIG_DMI */ 136