165 lines
4.5 KiB
C
165 lines
4.5 KiB
C
/*
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* blacklist.c
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*
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* Check to see if the given machine has a known bad ACPI BIOS
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* or if the BIOS is too old.
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*
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* Copyright (C) 2004 Len Brown <len.brown@intel.com>
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* Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/acpi.h>
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#include <acpi/acpi_bus.h>
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#include <linux/dmi.h>
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enum acpi_blacklist_predicates {
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all_versions,
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less_than_or_equal,
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equal,
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greater_than_or_equal,
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};
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struct acpi_blacklist_item {
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char oem_id[7];
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char oem_table_id[9];
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u32 oem_revision;
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acpi_table_type table;
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enum acpi_blacklist_predicates oem_revision_predicate;
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char *reason;
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u32 is_critical_error;
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};
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/*
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* POLICY: If *anything* doesn't work, put it on the blacklist.
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* If they are critical errors, mark it critical, and abort driver load.
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*/
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static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
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/* Compaq Presario 1700 */
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{"PTLTD ", " DSDT ", 0x06040000, ACPI_DSDT, less_than_or_equal,
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"Multiple problems", 1},
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/* Sony FX120, FX140, FX150? */
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{"SONY ", "U0 ", 0x20010313, ACPI_DSDT, less_than_or_equal,
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"ACPI driver problem", 1},
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/* Compaq Presario 800, Insyde BIOS */
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{"INT440", "SYSFexxx", 0x00001001, ACPI_DSDT, less_than_or_equal,
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"Does not use _REG to protect EC OpRegions", 1},
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/* IBM 600E - _ADR should return 7, but it returns 1 */
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{"IBM ", "TP600E ", 0x00000105, ACPI_DSDT, less_than_or_equal,
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"Incorrect _ADR", 1},
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{"ASUS\0\0", "P2B-S ", 0, ACPI_DSDT, all_versions,
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"Bogus PCI routing", 1},
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{""}
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};
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#if CONFIG_ACPI_BLACKLIST_YEAR
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static int __init blacklist_by_year(void)
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{
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int year = dmi_get_year(DMI_BIOS_DATE);
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/* Doesn't exist? Likely an old system */
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if (year == -1)
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return 1;
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/* 0? Likely a buggy new BIOS */
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if (year == 0)
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return 0;
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if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
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printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
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"acpi=force is required to enable ACPI\n",
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year, CONFIG_ACPI_BLACKLIST_YEAR);
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return 1;
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}
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return 0;
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}
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#else
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static inline int blacklist_by_year(void)
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{
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return 0;
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}
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#endif
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int __init acpi_blacklisted(void)
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{
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int i = 0;
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int blacklisted = 0;
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struct acpi_table_header *table_header;
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while (acpi_blacklist[i].oem_id[0] != '\0') {
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if (acpi_get_table_header_early
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(acpi_blacklist[i].table, &table_header)) {
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i++;
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continue;
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}
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if (strncmp(acpi_blacklist[i].oem_id, table_header->oem_id, 6)) {
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i++;
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continue;
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}
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if (strncmp
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(acpi_blacklist[i].oem_table_id, table_header->oem_table_id,
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8)) {
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i++;
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continue;
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}
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if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
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|| (acpi_blacklist[i].oem_revision_predicate ==
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less_than_or_equal
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&& table_header->oem_revision <=
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acpi_blacklist[i].oem_revision)
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|| (acpi_blacklist[i].oem_revision_predicate ==
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greater_than_or_equal
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&& table_header->oem_revision >=
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acpi_blacklist[i].oem_revision)
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|| (acpi_blacklist[i].oem_revision_predicate == equal
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&& table_header->oem_revision ==
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acpi_blacklist[i].oem_revision)) {
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printk(KERN_ERR PREFIX
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"Vendor \"%6.6s\" System \"%8.8s\" "
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"Revision 0x%x has a known ACPI BIOS problem.\n",
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acpi_blacklist[i].oem_id,
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acpi_blacklist[i].oem_table_id,
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acpi_blacklist[i].oem_revision);
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printk(KERN_ERR PREFIX
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"Reason: %s. This is a %s error\n",
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acpi_blacklist[i].reason,
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(acpi_blacklist[i].
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is_critical_error ? "non-recoverable" :
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"recoverable"));
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blacklisted = acpi_blacklist[i].is_critical_error;
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break;
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} else {
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i++;
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}
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}
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blacklisted += blacklist_by_year();
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return blacklisted;
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}
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