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 static struct dmi_system_id acpi_rev_dmi_table[] __initdata;
  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 struct dmi_system_id acpi_rev_dmi_table[] __initdata = {
  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 */