1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
169 lines
4.7 KiB
C
169 lines
4.7 KiB
C
/*
|
|
* blacklist.c
|
|
*
|
|
* Check to see if the given machine has a known bad ACPI BIOS
|
|
* or if the BIOS is too old.
|
|
*
|
|
* 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;
|
|
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 =
|
|
{
|
|
/* 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},
|
|
|
|
{""}
|
|
};
|
|
|
|
|
|
#if CONFIG_ACPI_BLACKLIST_YEAR
|
|
|
|
static int __init
|
|
blacklist_by_year(void)
|
|
{
|
|
int year;
|
|
char *s = dmi_get_system_info(DMI_BIOS_DATE);
|
|
|
|
if (!s)
|
|
return 0;
|
|
if (!*s)
|
|
return 0;
|
|
|
|
s = strrchr(s, '/');
|
|
if (!s)
|
|
return 0;
|
|
|
|
s += 1;
|
|
|
|
year = simple_strtoul(s,NULL,0);
|
|
|
|
if (year < 100) { /* 2-digit year */
|
|
year += 1900;
|
|
if (year < 1996) /* no dates < spec 1.0 */
|
|
year += 100;
|
|
}
|
|
|
|
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_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++;
|
|
}
|
|
}
|
|
|
|
blacklisted += blacklist_by_year();
|
|
|
|
return blacklisted;
|
|
}
|
|
|