drivers/acpi/blacklist.c

   1 /*
   2  *  blacklist.c
   3  *
   4  *  Check to see if the given machine has a known bad ACPI BIOS
   5  *
   6  *  Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
   7  *
   8  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or (at
  13  *  your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful, but
  16  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  *  General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License along
  21  *  with this program; if not, write to the Free Software Foundation, Inc.,
  22  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  23  *
  24  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  25  */
  26
  27
  28 #include <linux/kernel.h>
  29 #include <linux/module.h>
  30 #include <linux/init.h>
  31 #include <linux/acpi.h>
  32 #include <acpi/acpi_bus.h>
  33
  34 enum acpi_blacklist_predicates
  35 {
  36         all_versions,
  37         less_than_or_equal,
  38         equal,
  39         greater_than_or_equal,
  40 };
  41
  42 struct acpi_blacklist_item
  43 {
  44         char            oem_id[7];
  45         char            oem_table_id[9];
  46         u32             oem_revision;
  47         acpi_table_type table;
  48         enum acpi_blacklist_predicates oem_revision_predicate;
  49         char            *reason;
  50         u32             is_critical_error;
  51 };
  52
  53 /*
  54  * POLICY: If *anything* doesn't work, put it on the blacklist.
  55  *         If they are critical errors, mark it critical, and abort driver load.
  56  */
  57 static struct acpi_blacklist_item acpi_blacklist[] __initdata =
  58 {
  59         /* Portege 7020, BIOS 8.10 */
  60         {"TOSHIB", "7020CT  ", 0x19991112, ACPI_DSDT, all_versions, "Implicit Return", 0},
  61         /* Portege 4030 */
  62         {"TOSHIB", "4030    ", 0x19991112, ACPI_DSDT, all_versions, "Implicit Return", 0},
  63         /* Portege 310/320, BIOS 7.1 */
  64         {"TOSHIB", "310     ", 0x19990511, ACPI_DSDT, all_versions, "Implicit Return", 0},
  65         /* Seattle 2, old bios rev. */
  66         {"INTEL ", "440BX   ", 0x00001000, ACPI_DSDT, less_than_or_equal, "Field beyond end of region", 0},
  67         /* ASUS K7M */
  68         {"ASUS  ", "K7M     ", 0x00001000, ACPI_DSDT, less_than_or_equal, "Field beyond end of region", 0},
  69         /* Intel 810 Motherboard? */
  70         {"MNTRAL", "MO81010A", 0x00000012, ACPI_DSDT, less_than_or_equal, "Field beyond end of region", 0},
  71         /* Compaq Presario 711FR */
  72         {"COMAPQ", "EAGLES", 0x06040000, ACPI_DSDT, less_than_or_equal, "SCI issues (C2 disabled)", 0},
  73         /* Compaq Presario 1700 */
  74         {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_DSDT, less_than_or_equal, "Multiple problems", 1},
  75         /* Sony FX120, FX140, FX150? */
  76         {"SONY  ", "U0      ", 0x20010313, ACPI_DSDT, less_than_or_equal, "ACPI driver problem", 1},
  77         /* Compaq Presario 800, Insyde BIOS */
  78         {"INT440", "SYSFexxx", 0x00001001, ACPI_DSDT, less_than_or_equal, "Does not use _REG to protect EC OpRegions", 1},
  79         /* IBM 600E - _ADR should return 7, but it returns 1 */
  80         {"IBM   ", "TP600E  ", 0x00000105, ACPI_DSDT, less_than_or_equal, "Incorrect _ADR", 1},
  81         {"ASUS\0\0", "P2B-S   ", 0, ACPI_DSDT, all_versions, "Bogus PCI routing", 1},
  82
  83         {""}
  84 };
  85
  86
  87 int __init
  88 acpi_blacklisted(void)
  89 {
  90         int i = 0;
  91         int blacklisted = 0;
  92         struct acpi_table_header *table_header;
  93
  94         while (acpi_blacklist[i].oem_id[0] != '\0')
  95         {
  96                 if (acpi_get_table_header_early(acpi_blacklist[i].table, &table_header)) {
  97                         i++;
  98                         continue;
  99                 }
 100
 101                 if (strncmp(acpi_blacklist[i].oem_id, table_header->oem_id, 6)) {
 102                         i++;
 103                         continue;
 104                 }
 105
 106                 if (strncmp(acpi_blacklist[i].oem_table_id, table_header->oem_table_id, 8)) {
 107                         i++;
 108                         continue;
 109                 }
 110
 111                 if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
 112                     || (acpi_blacklist[i].oem_revision_predicate == less_than_or_equal
 113                         && table_header->oem_revision <= acpi_blacklist[i].oem_revision)
 114                     || (acpi_blacklist[i].oem_revision_predicate == greater_than_or_equal
 115                         && table_header->oem_revision >= acpi_blacklist[i].oem_revision)
 116                     || (acpi_blacklist[i].oem_revision_predicate == equal
 117                         && table_header->oem_revision == acpi_blacklist[i].oem_revision)) {
 118
 119                         printk(KERN_ERR PREFIX "Vendor \"%6.6s\" System \"%8.8s\" "
 120                                 "Revision 0x%x has a known ACPI BIOS problem.\n",
 121                                 acpi_blacklist[i].oem_id,
 122                                 acpi_blacklist[i].oem_table_id,
 123                                 acpi_blacklist[i].oem_revision);
 124
 125                         printk(KERN_ERR PREFIX "Reason: %s. This is a %s error\n",
 126                                 acpi_blacklist[i].reason,
 127                                 (acpi_blacklist[i].is_critical_error ? "non-recoverable" : "recoverable"));
 128
 129                         blacklisted = acpi_blacklist[i].is_critical_error;
 130                         break;
 131                 }
 132                 else {
 133                         i++;
 134                 }
 135         }
 136
 137         return blacklisted;
 138 }
 139