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

  #include "internal.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},

  
  	{""}
  };

  #if	CONFIG_ACPI_BLACKLIST_YEAR

  static int __init blacklist_by_year(void)

  {

  	int year;

  	/* Doesn't exist? Likely an old system */

  	if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {

  		printk(KERN_ERR PREFIX "no DMI BIOS year, "
  			"acpi=force is required to enable ACPI
  " );

  		return 1;

  	}

  	/* 0? Likely a buggy new BIOS */

  	if (year == 0) {
  		printk(KERN_ERR PREFIX "DMI BIOS year==0, "
  			"assuming ACPI-capable machine
  " );

  		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
  ",
  		       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.
  ",
  			       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
  ",
  			       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_vista(const struct dmi_system_id *d)
  {
  	printk(KERN_NOTICE PREFIX "DMI detected: %s
  ", d->ident);
  	acpi_osi_setup("!Windows 2006");

  	acpi_osi_setup("!Windows 2006 SP1");
  	acpi_osi_setup("!Windows 2006 SP2");

  	return 0;
  }

  static int __init dmi_disable_osi_win7(const struct dmi_system_id *d)
  {
  	printk(KERN_NOTICE PREFIX "DMI detected: %s
  ", d->ident);
  	acpi_osi_setup("!Windows 2009");
  	return 0;
  }

  static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {

  	{
  	.callback = dmi_disable_osi_vista,
  	.ident = "Fujitsu Siemens",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),

  		     DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),

  		},
  	},

  	{

  	/*
  	 * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
  	 * driver (e.g. nouveau) when user press brightness hotkey.
  	 * Currently, nouveau driver didn't do the job and it causes there
  	 * have a infinite while loop in DSDT when user press hotkey.
  	 * We add MSI GX723's dmi information to this table for workaround
  	 * this issue.
  	 * Will remove MSI GX723 from the table after nouveau grows support.
  	 */
  	.callback = dmi_disable_osi_vista,
  	.ident = "MSI GX723",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
  		     DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
  		},
  	},
  	{

  	.callback = dmi_disable_osi_vista,
  	.ident = "Sony VGN-NS10J_S",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
  		     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
  		},
  	},
  	{
  	.callback = dmi_disable_osi_vista,
  	.ident = "Sony VGN-SR290J",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),

  		     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),

  		},
  	},

  	{

  	.callback = dmi_disable_osi_vista,
  	.ident = "VGN-NS50B_L",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
  		     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
  		},
  	},
  	{

  	.callback = dmi_disable_osi_vista,
  	.ident = "Toshiba Satellite L355",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
  		     DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"),
  		},
  	},
  	{

  	.callback = dmi_disable_osi_win7,
  	.ident = "ASUS K50IJ",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
  		     DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"),
  		},
  	},

  	{
  	.callback = dmi_disable_osi_vista,
  	.ident = "Toshiba P305D",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
  		     DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"),
  		},
  	},

  	/*

  	 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
  	 * Linux ignores it, except for the machines enumerated below.

  	 */

  	/*
  	 * 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"),

  	 * T400, T500

  	 * _OSI(Linux) has Linux specific hooks
  	 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),

  	 * _OSI(Linux) is a NOP:
  	 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),

  	 * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),

  	 */
  	{
  	.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_enable_osi_linux,

  	.ident = "Lenovo ThinkPad X61",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
  		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
  		},
  	},

  	{
  	.callback = dmi_enable_osi_linux,
  	.ident = "Lenovo ThinkPad T400",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
  		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
  		},
  	},
  	{
  	.callback = dmi_enable_osi_linux,
  	.ident = "Lenovo ThinkPad T500",
  	.matches = {
  		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
  		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
  		},
  	},

  	{}
  };
  
  #endif /* CONFIG_DMI */