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_osi_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  *  You should have received a copy of the GNU General Public License along
  24  *  with this program; if not, write to the Free Software Foundation, Inc.,
  25  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  26  *
  27  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  28  */
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/acpi.h>
  34 #include <acpi/acpi_bus.h>
  35 #include <linux/dmi.h>
  36
  37 #include "internal.h"
  38
  39 enum acpi_blacklist_predicates {
  40         all_versions,
  41         less_than_or_equal,
  42         equal,
  43         greater_than_or_equal,
  44 };
  45
  46 struct acpi_blacklist_item {
  47         char oem_id[7];
  48         char oem_table_id[9];
  49         u32 oem_revision;
  50         char *table;
  51         enum acpi_blacklist_predicates oem_revision_predicate;
  52         char *reason;
  53         u32 is_critical_error;
  54 };
  55
  56 static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
  57
  58 /*
  59  * POLICY: If *anything* doesn't work, put it on the blacklist.
  60  *         If they are critical errors, mark it critical, and abort driver load.
  61  */
  62 static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
  63         /* Compaq Presario 1700 */
  64         {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
  65          "Multiple problems", 1},
  66         /* Sony FX120, FX140, FX150? */
  67         {"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
  68          "ACPI driver problem", 1},
  69         /* Compaq Presario 800, Insyde BIOS */
  70         {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
  71          "Does not use _REG to protect EC OpRegions", 1},
  72         /* IBM 600E - _ADR should return 7, but it returns 1 */
  73         {"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
  74          "Incorrect _ADR", 1},
  75
  76         {""}
  77 };
  78
  79 #if     CONFIG_ACPI_BLACKLIST_YEAR
  80
  81 static int __init blacklist_by_year(void)
  82 {
  83         int year;
  84
  85         /* Doesn't exist? Likely an old system */
  86         if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {
  87                 printk(KERN_ERR PREFIX "no DMI BIOS year, "
  88                         "acpi=force is required to enable ACPI\n" );
  89                 return 1;
  90         }
  91         /* 0? Likely a buggy new BIOS */
  92         if (year == 0) {
  93                 printk(KERN_ERR PREFIX "DMI BIOS year==0, "
  94                         "assuming ACPI-capable machine\n" );
  95                 return 0;
  96         }
  97         if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
  98                 printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
  99                        "acpi=force is required to enable ACPI\n",
 100                        year, CONFIG_ACPI_BLACKLIST_YEAR);
 101                 return 1;
 102         }
 103         return 0;
 104 }
 105 #else
 106 static inline int blacklist_by_year(void)
 107 {
 108         return 0;
 109 }
 110 #endif
 111
 112 int __init acpi_blacklisted(void)
 113 {
 114         int i = 0;
 115         int blacklisted = 0;
 116         struct acpi_table_header table_header;
 117
 118         while (acpi_blacklist[i].oem_id[0] != '\0') {
 119                 if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
 120                         i++;
 121                         continue;
 122                 }
 123
 124                 if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
 125                         i++;
 126                         continue;
 127                 }
 128
 129                 if (strncmp
 130                     (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
 131                      8)) {
 132                         i++;
 133                         continue;
 134                 }
 135
 136                 if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
 137                     || (acpi_blacklist[i].oem_revision_predicate ==
 138                         less_than_or_equal
 139                         && table_header.oem_revision <=
 140                         acpi_blacklist[i].oem_revision)
 141                     || (acpi_blacklist[i].oem_revision_predicate ==
 142                         greater_than_or_equal
 143                         && table_header.oem_revision >=
 144                         acpi_blacklist[i].oem_revision)
 145                     || (acpi_blacklist[i].oem_revision_predicate == equal
 146                         && table_header.oem_revision ==
 147                         acpi_blacklist[i].oem_revision)) {
 148
 149                         printk(KERN_ERR PREFIX
 150                                "Vendor \"%6.6s\" System \"%8.8s\" "
 151                                "Revision 0x%x has a known ACPI BIOS problem.\n",
 152                                acpi_blacklist[i].oem_id,
 153                                acpi_blacklist[i].oem_table_id,
 154                                acpi_blacklist[i].oem_revision);
 155
 156                         printk(KERN_ERR PREFIX
 157                                "Reason: %s. This is a %s error\n",
 158                                acpi_blacklist[i].reason,
 159                                (acpi_blacklist[i].
 160                                 is_critical_error ? "non-recoverable" :
 161                                 "recoverable"));
 162
 163                         blacklisted = acpi_blacklist[i].is_critical_error;
 164                         break;
 165                 } else {
 166                         i++;
 167                 }
 168         }
 169
 170         blacklisted += blacklist_by_year();
 171
 172         dmi_check_system(acpi_osi_dmi_table);
 173
 174         return blacklisted;
 175 }
 176 #ifdef CONFIG_DMI
 177 static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
 178 {
 179         acpi_dmi_osi_linux(1, d);       /* enable */
 180         return 0;
 181 }
 182 static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
 183 {
 184         printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
 185         acpi_osi_setup("!Windows 2006");
 186         return 0;
 187 }
 188
 189 static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 190         {
 191         .callback = dmi_disable_osi_vista,
 192         .ident = "Fujitsu Siemens",
 193         .matches = {
 194                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 195                      DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
 196                 },
 197         },
 198         {
 199         .callback = dmi_disable_osi_vista,
 200         .ident = "Sony VGN-NS10J_S",
 201         .matches = {
 202                      DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 203                      DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
 204                 },
 205         },
 206         {
 207         .callback = dmi_disable_osi_vista,
 208         .ident = "Sony VGN-SR290J",
 209         .matches = {
 210                      DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 211                      DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"),
 212                 },
 213         },
 214
 215         /*
 216          * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
 217          * Linux ignores it, except for the machines enumerated below.
 218          */
 219
 220         /*
 221          * Lenovo has a mix of systems OSI(Linux) situations
 222          * and thus we can not wildcard the vendor.
 223          *
 224          * _OSI(Linux) helps sound
 225          * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 226          * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 227          * _OSI(Linux) has Linux specific hooks
 228          * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
 229          * _OSI(Linux) is a NOP:
 230          * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
 231          * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
 232          */
 233         {
 234         .callback = dmi_enable_osi_linux,
 235         .ident = "Lenovo ThinkPad R61",
 236         .matches = {
 237                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 238                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 239                 },
 240         },
 241         {
 242         .callback = dmi_enable_osi_linux,
 243         .ident = "Lenovo ThinkPad T61",
 244         .matches = {
 245                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 246                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 247                 },
 248         },
 249         {
 250         .callback = dmi_enable_osi_linux,
 251         .ident = "Lenovo ThinkPad X61",
 252         .matches = {
 253                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 254                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
 255                 },
 256         },
 257         {}
 258 };
 259
 260 #endif /* CONFIG_DMI */