drivers/acpi/blacklist.c

   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 #ifdef CONFIG_DMI
  34 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst;
  35 #endif
  36
  37 /*
  38  * POLICY: If *anything* doesn't work, put it on the blacklist.
  39  *         If they are critical errors, mark it critical, and abort driver load.
  40  */
  41 static struct acpi_platform_list acpi_blacklist[] __initdata = {
  42         /* Compaq Presario 1700 */
  43         {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
  44          "Multiple problems", 1},
  45         /* Sony FX120, FX140, FX150? */
  46         {"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
  47          "ACPI driver problem", 1},
  48         /* Compaq Presario 800, Insyde BIOS */
  49         {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
  50          "Does not use _REG to protect EC OpRegions", 1},
  51         /* IBM 600E - _ADR should return 7, but it returns 1 */
  52         {"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
  53          "Incorrect _ADR", 1},
  54
  55         { }
  56 };
  57
  58 int __init acpi_blacklisted(void)
  59 {
  60         int i;
  61         int blacklisted = 0;
  62
  63         i = acpi_match_platform_list(acpi_blacklist);
  64         if (i >= 0) {
  65                 pr_err(PREFIX "Vendor \"%6.6s\" System \"%8.8s\" Revision 0x%x has a known ACPI BIOS problem.\n",
  66                        acpi_blacklist[i].oem_id,
  67                        acpi_blacklist[i].oem_table_id,
  68                        acpi_blacklist[i].oem_revision);
  69
  70                 pr_err(PREFIX "Reason: %s. This is a %s error\n",
  71                        acpi_blacklist[i].reason,
  72                        (acpi_blacklist[i].data ?
  73                         "non-recoverable" : "recoverable"));
  74
  75                 blacklisted = acpi_blacklist[i].data;
  76         }
  77
  78         (void)early_acpi_osi_init();
  79 #ifdef CONFIG_DMI
  80         dmi_check_system(acpi_rev_dmi_table);
  81 #endif
  82
  83         return blacklisted;
  84 }
  85 #ifdef CONFIG_DMI
  86 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
  87 static int __init dmi_enable_rev_override(const struct dmi_system_id *d)
  88 {
  89         printk(KERN_NOTICE PREFIX "DMI detected: %s (force ACPI _REV to 5)\n",
  90                d->ident);
  91         acpi_rev_override_setup(NULL);
  92         return 0;
  93 }
  94 #endif
  95
  96 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = {
  97 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
  98         /*
  99          * DELL XPS 13 (2015) switches sound between HDA and I2S
 100          * depending on the ACPI _REV callback. If userspace supports
 101          * I2S sufficiently (or if you do not care about sound), you
 102          * can safely disable this quirk.
 103          */
 104         {
 105          .callback = dmi_enable_rev_override,
 106          .ident = "DELL XPS 13 (2015)",
 107          .matches = {
 108                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 109                       DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"),
 110                 },
 111         },
 112         {
 113          .callback = dmi_enable_rev_override,
 114          .ident = "DELL Precision 5520",
 115          .matches = {
 116                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 117                       DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"),
 118                 },
 119         },
 120         {
 121          .callback = dmi_enable_rev_override,
 122          .ident = "DELL Precision 3520",
 123          .matches = {
 124                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 125                       DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"),
 126                 },
 127         },
 128         /*
 129          * Resolves a quirk with the Dell Latitude 3350 that
 130          * causes the ethernet adapter to not function.
 131          */
 132         {
 133          .callback = dmi_enable_rev_override,
 134          .ident = "DELL Latitude 3350",
 135          .matches = {
 136                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 137                       DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"),
 138                 },
 139         },
 140         {
 141          .callback = dmi_enable_rev_override,
 142          .ident = "DELL Inspiron 7537",
 143          .matches = {
 144                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 145                       DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
 146                 },
 147         },
 148 #endif
 149         {}
 150 };
 151
 152 #endif /* CONFIG_DMI */