linux/drivers/acpi/blacklist.c
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   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/init.h>
  32#include <linux/acpi.h>
  33#include <acpi/acpi_bus.h>
  34#include <linux/dmi.h>
  35
  36#include "internal.h"
  37
  38enum acpi_blacklist_predicates {
  39        all_versions,
  40        less_than_or_equal,
  41        equal,
  42        greater_than_or_equal,
  43};
  44
  45struct acpi_blacklist_item {
  46        char oem_id[7];
  47        char oem_table_id[9];
  48        u32 oem_revision;
  49        char *table;
  50        enum acpi_blacklist_predicates oem_revision_predicate;
  51        char *reason;
  52        u32 is_critical_error;
  53};
  54
  55static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
  56
  57/*
  58 * POLICY: If *anything* doesn't work, put it on the blacklist.
  59 *         If they are critical errors, mark it critical, and abort driver load.
  60 */
  61static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
  62        /* Compaq Presario 1700 */
  63        {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
  64         "Multiple problems", 1},
  65        /* Sony FX120, FX140, FX150? */
  66        {"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
  67         "ACPI driver problem", 1},
  68        /* Compaq Presario 800, Insyde BIOS */
  69        {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
  70         "Does not use _REG to protect EC OpRegions", 1},
  71        /* IBM 600E - _ADR should return 7, but it returns 1 */
  72        {"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
  73         "Incorrect _ADR", 1},
  74
  75        {""}
  76};
  77
  78#if     CONFIG_ACPI_BLACKLIST_YEAR
  79
  80static int __init blacklist_by_year(void)
  81{
  82        int year;
  83
  84        /* Doesn't exist? Likely an old system */
  85        if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {
  86                printk(KERN_ERR PREFIX "no DMI BIOS year, "
  87                        "acpi=force is required to enable ACPI\n" );
  88                return 1;
  89        }
  90        /* 0? Likely a buggy new BIOS */
  91        if (year == 0) {
  92                printk(KERN_ERR PREFIX "DMI BIOS year==0, "
  93                        "assuming ACPI-capable machine\n" );
  94                return 0;
  95        }
  96        if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
  97                printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
  98                       "acpi=force is required to enable ACPI\n",
  99                       year, CONFIG_ACPI_BLACKLIST_YEAR);
 100                return 1;
 101        }
 102        return 0;
 103}
 104#else
 105static inline int blacklist_by_year(void)
 106{
 107        return 0;
 108}
 109#endif
 110
 111int __init acpi_blacklisted(void)
 112{
 113        int i = 0;
 114        int blacklisted = 0;
 115        struct acpi_table_header table_header;
 116
 117        while (acpi_blacklist[i].oem_id[0] != '\0') {
 118                if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
 119                        i++;
 120                        continue;
 121                }
 122
 123                if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
 124                        i++;
 125                        continue;
 126                }
 127
 128                if (strncmp
 129                    (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
 130                     8)) {
 131                        i++;
 132                        continue;
 133                }
 134
 135                if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
 136                    || (acpi_blacklist[i].oem_revision_predicate ==
 137                        less_than_or_equal
 138                        && table_header.oem_revision <=
 139                        acpi_blacklist[i].oem_revision)
 140                    || (acpi_blacklist[i].oem_revision_predicate ==
 141                        greater_than_or_equal
 142                        && table_header.oem_revision >=
 143                        acpi_blacklist[i].oem_revision)
 144                    || (acpi_blacklist[i].oem_revision_predicate == equal
 145                        && table_header.oem_revision ==
 146                        acpi_blacklist[i].oem_revision)) {
 147
 148                        printk(KERN_ERR PREFIX
 149                               "Vendor \"%6.6s\" System \"%8.8s\" "
 150                               "Revision 0x%x has a known ACPI BIOS problem.\n",
 151                               acpi_blacklist[i].oem_id,
 152                               acpi_blacklist[i].oem_table_id,
 153                               acpi_blacklist[i].oem_revision);
 154
 155                        printk(KERN_ERR PREFIX
 156                               "Reason: %s. This is a %s error\n",
 157                               acpi_blacklist[i].reason,
 158                               (acpi_blacklist[i].
 159                                is_critical_error ? "non-recoverable" :
 160                                "recoverable"));
 161
 162                        blacklisted = acpi_blacklist[i].is_critical_error;
 163                        break;
 164                } else {
 165                        i++;
 166                }
 167        }
 168
 169        blacklisted += blacklist_by_year();
 170
 171        dmi_check_system(acpi_osi_dmi_table);
 172
 173        return blacklisted;
 174}
 175#ifdef CONFIG_DMI
 176static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
 177{
 178        acpi_dmi_osi_linux(1, d);       /* enable */
 179        return 0;
 180}
 181static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
 182{
 183        printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
 184        acpi_osi_setup("!Windows 2006");
 185        acpi_osi_setup("!Windows 2006 SP1");
 186        acpi_osi_setup("!Windows 2006 SP2");
 187        return 0;
 188}
 189static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
 190{
 191        printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
 192        acpi_osi_setup("!Windows 2009");
 193        return 0;
 194}
 195
 196static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 197        {
 198        .callback = dmi_disable_osi_vista,
 199        .ident = "Fujitsu Siemens",
 200        .matches = {
 201                     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 202                     DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
 203                },
 204        },
 205        {
 206        /*
 207         * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
 208         * driver (e.g. nouveau) when user press brightness hotkey.
 209         * Currently, nouveau driver didn't do the job and it causes there
 210         * have a infinite while loop in DSDT when user press hotkey.
 211         * We add MSI GX723's dmi information to this table for workaround
 212         * this issue.
 213         * Will remove MSI GX723 from the table after nouveau grows support.
 214         */
 215        .callback = dmi_disable_osi_vista,
 216        .ident = "MSI GX723",
 217        .matches = {
 218                     DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
 219                     DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
 220                },
 221        },
 222        {
 223        .callback = dmi_disable_osi_vista,
 224        .ident = "Sony VGN-NS10J_S",
 225        .matches = {
 226                     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 227                     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
 228                },
 229        },
 230        {
 231        .callback = dmi_disable_osi_vista,
 232        .ident = "Sony VGN-SR290J",
 233        .matches = {
 234                     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 235                     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
 236                },
 237        },
 238        {
 239        .callback = dmi_disable_osi_vista,
 240        .ident = "VGN-NS50B_L",
 241        .matches = {
 242                     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 243                     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
 244                },
 245        },
 246        {
 247        .callback = dmi_disable_osi_vista,
 248        .ident = "Toshiba Satellite L355",
 249        .matches = {
 250                     DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 251                     DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
 252                },
 253        },
 254        {
 255        .callback = dmi_disable_osi_win7,
 256        .ident = "ASUS K50IJ",
 257        .matches = {
 258                     DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
 259                     DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
 260                },
 261        },
 262        {
 263        .callback = dmi_disable_osi_vista,
 264        .ident = "Toshiba P305D",
 265        .matches = {
 266                     DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 267                     DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
 268                },
 269        },
 270
 271        /*
 272         * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
 273         * Linux ignores it, except for the machines enumerated below.
 274         */
 275
 276        /*
 277         * Lenovo has a mix of systems OSI(Linux) situations
 278         * and thus we can not wildcard the vendor.
 279         *
 280         * _OSI(Linux) helps sound
 281         * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 282         * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 283         * T400, T500
 284         * _OSI(Linux) has Linux specific hooks
 285         * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
 286         * _OSI(Linux) is a NOP:
 287         * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
 288         * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
 289         */
 290        {
 291        .callback = dmi_enable_osi_linux,
 292        .ident = "Lenovo ThinkPad R61",
 293        .matches = {
 294                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 295                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 296                },
 297        },
 298        {
 299        .callback = dmi_enable_osi_linux,
 300        .ident = "Lenovo ThinkPad T61",
 301        .matches = {
 302                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 303                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 304                },
 305        },
 306        {
 307        .callback = dmi_enable_osi_linux,
 308        .ident = "Lenovo ThinkPad X61",
 309        .matches = {
 310                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 311                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
 312                },
 313        },
 314        {
 315        .callback = dmi_enable_osi_linux,
 316        .ident = "Lenovo ThinkPad T400",
 317        .matches = {
 318                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 319                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
 320                },
 321        },
 322        {
 323        .callback = dmi_enable_osi_linux,
 324        .ident = "Lenovo ThinkPad T500",
 325        .matches = {
 326                     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 327                     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
 328                },
 329        },
 330        {}
 331};
 332
 333#endif /* CONFIG_DMI */
 334
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