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blacklist.c

/*
 *  blacklist.c
 *
 *  Check to see if the given machine has a known bad ACPI BIOS
 *  or if the BIOS is too old.
 *  Check given machine against acpi_osi_dmi_table[].
 *
 *  Copyright (C) 2004 Len Brown <len.brown@intel.com>
 *  Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or (at
 *  your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
#include <linux/dmi.h>

enum acpi_blacklist_predicates {
      all_versions,
      less_than_or_equal,
      equal,
      greater_than_or_equal,
};

struct acpi_blacklist_item {
      char oem_id[7];
      char oem_table_id[9];
      u32 oem_revision;
      char *table;
      enum acpi_blacklist_predicates oem_revision_predicate;
      char *reason;
      u32 is_critical_error;
};

static struct dmi_system_id acpi_osi_dmi_table[] __initdata;

/*
 * POLICY: If *anything* doesn't work, put it on the blacklist.
 *       If they are critical errors, mark it critical, and abort driver load.
 */
static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
      /* Compaq Presario 1700 */
      {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
       "Multiple problems", 1},
      /* Sony FX120, FX140, FX150? */
      {"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
       "ACPI driver problem", 1},
      /* Compaq Presario 800, Insyde BIOS */
      {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
       "Does not use _REG to protect EC OpRegions", 1},
      /* IBM 600E - _ADR should return 7, but it returns 1 */
      {"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
       "Incorrect _ADR", 1},
      {"ASUS\0\0", "P2B-S   ", 0, ACPI_SIG_DSDT, all_versions,
       "Bogus PCI routing", 1},

      {""}
};

#if   CONFIG_ACPI_BLACKLIST_YEAR

static int __init blacklist_by_year(void)
{
      int year = dmi_get_year(DMI_BIOS_DATE);
      /* Doesn't exist? Likely an old system */
      if (year == -1) {
            printk(KERN_ERR PREFIX "no DMI BIOS year, "
                  "acpi=force is required to enable ACPI\n" );
            return 1;
      }
      /* 0? Likely a buggy new BIOS */
      if (year == 0) {
            printk(KERN_ERR PREFIX "DMI BIOS year==0, "
                  "assuming ACPI-capable machine\n" );
            return 0;
      }
      if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
            printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
                   "acpi=force is required to enable ACPI\n",
                   year, CONFIG_ACPI_BLACKLIST_YEAR);
            return 1;
      }
      return 0;
}
#else
static inline int blacklist_by_year(void)
{
      return 0;
}
#endif

int __init acpi_blacklisted(void)
{
      int i = 0;
      int blacklisted = 0;
      struct acpi_table_header table_header;

      while (acpi_blacklist[i].oem_id[0] != '\0') {
            if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
                  i++;
                  continue;
            }

            if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
                  i++;
                  continue;
            }

            if (strncmp
                (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
                 8)) {
                  i++;
                  continue;
            }

            if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
                || (acpi_blacklist[i].oem_revision_predicate ==
                  less_than_or_equal
                  && table_header.oem_revision <=
                  acpi_blacklist[i].oem_revision)
                || (acpi_blacklist[i].oem_revision_predicate ==
                  greater_than_or_equal
                  && table_header.oem_revision >=
                  acpi_blacklist[i].oem_revision)
                || (acpi_blacklist[i].oem_revision_predicate == equal
                  && table_header.oem_revision ==
                  acpi_blacklist[i].oem_revision)) {

                  printk(KERN_ERR PREFIX
                         "Vendor \"%6.6s\" System \"%8.8s\" "
                         "Revision 0x%x has a known ACPI BIOS problem.\n",
                         acpi_blacklist[i].oem_id,
                         acpi_blacklist[i].oem_table_id,
                         acpi_blacklist[i].oem_revision);

                  printk(KERN_ERR PREFIX
                         "Reason: %s. This is a %s error\n",
                         acpi_blacklist[i].reason,
                         (acpi_blacklist[i].
                        is_critical_error ? "non-recoverable" :
                        "recoverable"));

                  blacklisted = acpi_blacklist[i].is_critical_error;
                  break;
            } else {
                  i++;
            }
      }

      blacklisted += blacklist_by_year();

      dmi_check_system(acpi_osi_dmi_table);

      return blacklisted;
}
#ifdef CONFIG_DMI
static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
{
      acpi_dmi_osi_linux(1, d);     /* enable */
      return 0;
}
static int __init dmi_disable_osi_linux(const struct dmi_system_id *d)
{
      acpi_dmi_osi_linux(0, d);     /* disable */
      return 0;
}
static int __init dmi_unknown_osi_linux(const struct dmi_system_id *d)
{
      acpi_dmi_osi_linux(-1, d);    /* unknown */
      return 0;
}

/*
 * Most BIOS that invoke OSI(Linux) do nothing with it.
 * But some cause Linux to break.
 * Only a couple use it to make Linux run better.
 *
 * Thus, Linux should continue to disable OSI(Linux) by default,
 * should continue to discourage BIOS writers from using it, and
 * should whitelist the few existing systems that require it.
 *
 * If it appears clear a vendor isn't using OSI(Linux)
 * for anything constructive, blacklist them by name to disable
 * unnecessary dmesg warnings on all of their products.
 */

static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
      /*
       * Disable OSI(Linux) warnings on all "Acer, inc."
       *
       * _OSI(Linux) disables the latest Windows BIOS code:
       * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5050"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5580"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 3010"),
       * _OSI(Linux) effect unknown:
       * DMI_MATCH(DMI_PRODUCT_NAME, "Ferrari 5000"),
       */
      /*
       * note that dmi_check_system() uses strstr()
       * to match sub-strings rather than !strcmp(),
       * so "Acer" below matches "Acer, inc." above.
       */
      /*
       * Disable OSI(Linux) warnings on all "Acer"
       *
       * _OSI(Linux) effect unknown:
       * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720Z"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5520"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 6460"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 7510"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5220"),
       */
      {
      .callback = dmi_unknown_osi_linux,
      .ident = "Acer",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "Apple Computer, Inc."
       *
       * _OSI(Linux) confirmed to be a NOP:
       * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
       * _OSI(Linux) effect unknown:
       * DMI_MATCH(DMI_PRODUCT_NAME, "MacPro2,1"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
       */
      {
      .callback = dmi_disable_osi_linux,
      .ident = "Apple",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "BenQ"
       *
       * _OSI(Linux) confirmed to be a NOP:
       * DMI_MATCH(DMI_PRODUCT_NAME, "Joybook S31"),
       */
      {
      .callback = dmi_disable_osi_linux,
      .ident = "BenQ",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "BenQ"),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "Clevo Co."
       *
       * _OSI(Linux) confirmed to be a NOP:
       * DMI_MATCH(DMI_PRODUCT_NAME, "M570RU"),
       */
      {
      .callback = dmi_disable_osi_linux,
      .ident = "Clevo",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "COMPAL"
       *
       * _OSI(Linux) confirmed to be a NOP:
       * DMI_MATCH(DMI_BOARD_NAME, "HEL8X"),
       * _OSI(Linux) unknown effect:
       * DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
       */
      {
      .callback = dmi_unknown_osi_linux,
      .ident = "Compal",
      .matches = {
                 DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
            },
      },
      { /* OSI(Linux) touches USB, unknown side-effect */
      .callback = dmi_disable_osi_linux,
      .ident = "Dell Dimension 5150",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                 DMI_MATCH(DMI_PRODUCT_NAME, "Dell DM051"),
            },
      },
      { /* OSI(Linux) is a NOP */
      .callback = dmi_disable_osi_linux,
      .ident = "Dell",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1501"),
            },
      },
      { /* OSI(Linux) effect unknown */
      .callback = dmi_unknown_osi_linux,
      .ident = "Dell",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D830"),
            },
      },
      { /* OSI(Linux) effect unknown */
      .callback = dmi_unknown_osi_linux,
      .ident = "Dell",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX620"),
            },
      },
      { /* OSI(Linux) effect unknown */
      .callback = dmi_unknown_osi_linux,
      .ident = "Dell",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                 DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1900"),
            },
      },
      { /* OSI(Linux) touches USB */
      .callback = dmi_disable_osi_linux,
      .ident = "Dell",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                 DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 390"),
            },
      },
      { /* OSI(Linux) is a NOP */
      .callback = dmi_disable_osi_linux,
      .ident = "Dell Vostro 1000",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro   1000"),
            },
      },
      { /* OSI(Linux) effect unknown */
      .callback = dmi_unknown_osi_linux,
      .ident = "Dell",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
                 DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge SC440"),
            },
      },
      { /* OSI(Linux) effect unknown */
      .callback = dmi_unknown_osi_linux,
      .ident = "Dialogue Flybook V5",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Dialogue Technology Corporation"),
                 DMI_MATCH(DMI_PRODUCT_NAME, "Flybook V5"),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "FUJITSU SIEMENS"
       *
       * _OSI(Linux) disables latest Windows BIOS code:
       * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 2510"),
       * _OSI(Linux) confirmed to be a NOP:
       * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1536"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1556"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 1546"),
       * _OSI(Linux) unknown effect:
       * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo M1425"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo Si 1520"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
       */
      {
      .callback = dmi_disable_osi_linux,
      .ident = "Fujitsu Siemens",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "Hewlett-Packard"
       *
       * _OSI(Linux) confirmed to be a NOP:
       * .ident = "HP Pavilion tx 1000"
       * DMI_MATCH(DMI_BOARD_NAME, "30BF"),
       * .ident = "HP Pavilion dv2000"
       * DMI_MATCH(DMI_BOARD_NAME, "30B5"),
       * .ident = "HP Pavilion dv5000",
       * DMI_MATCH(DMI_BOARD_NAME, "30A7"),
       * .ident = "HP Pavilion dv6300 30BC",
       * DMI_MATCH(DMI_BOARD_NAME, "30BC"),
       * .ident = "HP Pavilion dv6000",
       * DMI_MATCH(DMI_BOARD_NAME, "30B7"),
       * DMI_MATCH(DMI_BOARD_NAME, "30B8"),
       * .ident = "HP Pavilion dv9000",
       * DMI_MATCH(DMI_BOARD_NAME, "30B9"),
       * .ident = "HP Pavilion dv9500",
       * DMI_MATCH(DMI_BOARD_NAME, "30CB"),
       * .ident = "HP/Compaq Presario C500",
       * DMI_MATCH(DMI_BOARD_NAME, "30C6"),
       * .ident = "HP/Compaq Presario F500",
       * DMI_MATCH(DMI_BOARD_NAME, "30D3"),
       * _OSI(Linux) unknown effect:
       * .ident = "HP Pavilion dv6500",
       * DMI_MATCH(DMI_BOARD_NAME, "30D0"),
       */
      {
      .callback = dmi_disable_osi_linux,
      .ident = "Hewlett-Packard",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
            },
      },
      /*
       * Lenovo has a mix of systems OSI(Linux) situations
       * and thus we can not wildcard the vendor.
       *
       * _OSI(Linux) helps sound
       * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
       * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
       * _OSI(Linux) is a NOP:
       * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
       */
      {
      .callback = dmi_enable_osi_linux,
      .ident = "Lenovo ThinkPad R61",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
                 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
            },
      },
      {
      .callback = dmi_enable_osi_linux,
      .ident = "Lenovo ThinkPad T61",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
                 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
            },
      },
      {
      .callback = dmi_unknown_osi_linux,
      .ident = "Lenovo 3000 V100",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
                 DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
            },
      },
      {
      .callback = dmi_disable_osi_linux,
      .ident = "Lenovo 3000 N100",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
                 DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "LG Electronics"
       *
       * _OSI(Linux) confirmed to be a NOP:
       * DMI_MATCH(DMI_PRODUCT_NAME, "P1-J150B"),
       * with DMI_MATCH(DMI_BOARD_NAME, "ROCKY"),
       *
       * unknown:
       * DMI_MATCH(DMI_PRODUCT_NAME, "S1-MDGDG"),
       * with DMI_MATCH(DMI_BOARD_NAME, "ROCKY"),
       */
      {
      .callback = dmi_disable_osi_linux,
      .ident = "LG",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
            },
      },
      /* NEC - OSI(Linux) effect unknown */
      {
      .callback = dmi_unknown_osi_linux,
      .ident = "NEC VERSA M360",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "NEC Computers SAS"),
                 DMI_MATCH(DMI_PRODUCT_NAME, "NEC VERSA M360"),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "Samsung Electronics"
       *
       * OSI(Linux) disables PNP0C32 and other BIOS code for Windows:
       * DMI_MATCH(DMI_PRODUCT_NAME, "R40P/R41P"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "R59P/R60P/R61P"),
       */
      {
      .callback = dmi_disable_osi_linux,
      .ident = "Samsung",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "Sony Corporation"
       *
       * _OSI(Linux) is a NOP:
       * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ650N"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ38GP_C"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-TZ21MN_N"),
       * _OSI(Linux) unknown effect:
       * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ11M"),
       */
      {
      .callback = dmi_unknown_osi_linux,
      .ident = "Sony",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
            },
      },
      /*
       * Disable OSI(Linux) warnings on all "TOSHIBA"
       *
       * _OSI(Linux) breaks sound (bugzilla 7787):
       * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P100"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P105"),
       * _OSI(Linux) is a NOP:
       * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A100"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A210"),
       * _OSI(Linux) unknown effect:
       * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A135"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A200"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P205"),
       * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U305"),
       */
      {
      .callback = dmi_disable_osi_linux,
      .ident = "Toshiba",
      .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
            },
      },
      {}
};

#endif /* CONFIG_DMI */

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