LXR linux/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
  39enum acpi_blacklist_predicates {
  40        all_versions,
  41        less_than_or_equal,
  42        equal,
  43        greater_than_or_equal,
  44};
  45
  46struct 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
  56static 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 */
  62static 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
  81static 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
 106static inline int blacklist_by_year(void)
 107{
 108        return 0;
 109}
 110#endif
 111
 112int __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
 177static 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}
 182static 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}
 188static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
 189{
 190        printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
 191        acpi_osi_setup("!Windows 2009");
 192        return 0;
 193}
 194
 195static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 196        {
 197        .callback = dmi_disable_osi_vista,
 198        .ident = "Fujitsu Siemens",
 199        .matches = {
 200                     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 201                     DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
 202                },
 203        },
 204        {
 205        .callback = dmi_disable_osi_vista,
 206        .ident = "Sony VGN-NS10J_S",
 207        .matches = {
 208                     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 209                     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
 210                },
 211        },
 212        {
 213        .callback = dmi_disable_osi_vista,
 214        .ident = "Sony VGN-SR290J",
 215        .matches = {
 216                     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 217                     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
 218                },
 219        },
 220        {
 221        .callback = dmi_disable_osi_vista,
 222        .ident = "VGN-NS50B_L",
 223        .matches = {
 224                     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 225                     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
 226                },
 227        },
 228        {
 229        .callback = dmi_disable_osi_win7,
 230        .ident = "ASUS K50IJ",
 231        .matches = {
 232                     DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
 233                     DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
 234                },
 235        },
 236
 237        /*
 238         * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
 239         * Linux ignores it, except for the machines enumerated below.
 240         */
 241
 242        /*
 243         * Lenovo has a mix of systems OSI(Linux) situations
 244         * and thus we can not wildcard the vendor.
 245         *
 246         * _OSI(Linux) helps sound
 247         * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 248         * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 249         * T400, T500
 250         * _OSI(Linux) has Linux specific hooks
 251         * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
 252         * _OSI(Linux) is a NOP:
 253         * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
 254         * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
 255         */
 256        {
 257        .callback = dmi_enable_osi_linux,
 258        .ident = "Lenovo ThinkPad R61",
 259        .matches = {
 260                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 261                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 262                },
 263        },
 264        {
 265        .callback = dmi_enable_osi_linux,
 266        .ident = "Lenovo ThinkPad T61",
 267        .matches = {
 268                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 269                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 270                },
 271        },
 272        {
 273        .callback = dmi_enable_osi_linux,
 274        .ident = "Lenovo ThinkPad X61",
 275        .matches = {
 276                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 277                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
 278                },
 279        },
 280        {
 281        .callback = dmi_enable_osi_linux,
 282        .ident = "Lenovo ThinkPad T400",
 283        .matches = {
 284                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 285                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
 286                },
 287        },
 288        {
 289        .callback = dmi_enable_osi_linux,
 290        .ident = "Lenovo ThinkPad T500",
 291        .matches = {
 292                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 293                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
 294                },
 295        },
 296        {}
 297};
 298
 299#endif /* CONFIG_DMI */
 300