1 /* 2 * blacklist.c 3 * 4 * Check to see if the given machine has a known bad ACPI BIOS 5 * or if the BIOS is too old. 6 * Check given machine against acpi_rev_dmi_table[]. 7 * 8 * Copyright (C) 2004 Len Brown <len.brown@intel.com> 9 * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com> 10 * 11 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or (at 16 * your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, but 19 * WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 * General Public License for more details. 22 * 23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 24 */ 25 26 #include <linux/kernel.h> 27 #include <linux/init.h> 28 #include <linux/acpi.h> 29 #include <linux/dmi.h> 30 31 #include "internal.h" 32 33 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst; 34 35 /* 36 * POLICY: If *anything* doesn't work, put it on the blacklist. 37 * If they are critical errors, mark it critical, and abort driver load. 38 */ 39 static struct acpi_platform_list acpi_blacklist[] __initdata = { 40 /* Compaq Presario 1700 */ 41 {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal, 42 "Multiple problems", 1}, 43 /* Sony FX120, FX140, FX150? */ 44 {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal, 45 "ACPI driver problem", 1}, 46 /* Compaq Presario 800, Insyde BIOS */ 47 {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal, 48 "Does not use _REG to protect EC OpRegions", 1}, 49 /* IBM 600E - _ADR should return 7, but it returns 1 */ 50 {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal, 51 "Incorrect _ADR", 1}, 52 53 { } 54 }; 55 56 int __init acpi_blacklisted(void) 57 { 58 int i; 59 int blacklisted = 0; 60 61 i = acpi_match_platform_list(acpi_blacklist); 62 if (i >= 0) { 63 pr_err(PREFIX "Vendor \"%6.6s\" System \"%8.8s\" Revision 0x%x has a known ACPI BIOS problem.\n", 64 acpi_blacklist[i].oem_id, 65 acpi_blacklist[i].oem_table_id, 66 acpi_blacklist[i].oem_revision); 67 68 pr_err(PREFIX "Reason: %s. This is a %s error\n", 69 acpi_blacklist[i].reason, 70 (acpi_blacklist[i].data ? 71 "non-recoverable" : "recoverable")); 72 73 blacklisted = acpi_blacklist[i].data; 74 } 75 76 (void)early_acpi_osi_init(); 77 dmi_check_system(acpi_rev_dmi_table); 78 79 return blacklisted; 80 } 81 #ifdef CONFIG_DMI 82 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE 83 static int __init dmi_enable_rev_override(const struct dmi_system_id *d) 84 { 85 printk(KERN_NOTICE PREFIX "DMI detected: %s (force ACPI _REV to 5)\n", 86 d->ident); 87 acpi_rev_override_setup(NULL); 88 return 0; 89 } 90 #endif 91 92 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = { 93 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE 94 /* 95 * DELL XPS 13 (2015) switches sound between HDA and I2S 96 * depending on the ACPI _REV callback. If userspace supports 97 * I2S sufficiently (or if you do not care about sound), you 98 * can safely disable this quirk. 99 */ 100 { 101 .callback = dmi_enable_rev_override, 102 .ident = "DELL XPS 13 (2015)", 103 .matches = { 104 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 105 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"), 106 }, 107 }, 108 { 109 .callback = dmi_enable_rev_override, 110 .ident = "DELL Precision 5520", 111 .matches = { 112 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 113 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"), 114 }, 115 }, 116 { 117 .callback = dmi_enable_rev_override, 118 .ident = "DELL Precision 3520", 119 .matches = { 120 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 121 DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"), 122 }, 123 }, 124 /* 125 * Resolves a quirk with the Dell Latitude 3350 that 126 * causes the ethernet adapter to not function. 127 */ 128 { 129 .callback = dmi_enable_rev_override, 130 .ident = "DELL Latitude 3350", 131 .matches = { 132 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 133 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"), 134 }, 135 }, 136 { 137 .callback = dmi_enable_rev_override, 138 .ident = "DELL Inspiron 7537", 139 .matches = { 140 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 141 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"), 142 }, 143 }, 144 #endif 145 {} 146 }; 147 148 #endif /* CONFIG_DMI */ 149