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/*

 *  blacklist.c

 *

 *  Check to see if the given machine has a known bad ACPI BIOS

 *

 *  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>

#define PREFIX                  "ACPI: "

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;

        acpi_table_type table;

        enum acpi_blacklist_predicates oem_revision_predicate;

        char            *reason;

        u32             is_critical_error;

};

/*

 * 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 =

{

        /* Portege 7020, BIOS 8.10 */

        {"TOSHIB", "7020CT  ", 0x19991112, ACPI_DSDT, all_versions, "Implicit Return", 0},

        /* Portege 4030 */

        {"TOSHIB", "4030    ", 0x19991112, ACPI_DSDT, all_versions, "Implicit Return", 0},

        /* Portege 310/320, BIOS 7.1 */

        {"TOSHIB", "310     ", 0x19990511, ACPI_DSDT, all_versions, "Implicit Return", 0},

        /* Seattle 2, old bios rev. */

        {"INTEL ", "440BX   ", 0x00001000, ACPI_DSDT, less_than_or_equal, "Field beyond end of region", 0},

        /* ASUS K7M */

        {"ASUS  ", "K7M     ", 0x00001000, ACPI_DSDT, less_than_or_equal, "Field beyond end of region", 0},

        /* Intel 810 Motherboard? */

        {"MNTRAL", "MO81010A", 0x00000012, ACPI_DSDT, less_than_or_equal, "Field beyond end of region", 0},

        /* Compaq Presario 711FR */

        {"COMAPQ", "EAGLES", 0x06040000, ACPI_DSDT, less_than_or_equal, "SCI issues (C2 disabled)", 0},

        /* Compaq Presario 1700 */

        {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_DSDT, less_than_or_equal, "Multiple problems", 1},

        /* Sony FX120, FX140, FX150? */

        {"SONY  ", "U0      ", 0x20010313, ACPI_DSDT, less_than_or_equal, "ACPI driver problem", 1},

        /* Compaq Presario 800, Insyde BIOS */

        {"INT440", "SYSFexxx", 0x00001001, ACPI_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_DSDT, less_than_or_equal, "Incorrect _ADR", 1},

        {"ASUS\0\0", "P2B-S   ", 0, ACPI_DSDT, all_versions, "Bogus PCI routing", 1},

        {""}

};

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_early(acpi_blacklist[i].table, &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++;

                }

        }

        return blacklisted;

}