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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  Revert "ACPI: Fan: Drop force_power_state acpi_device option"
  ACPI: EC: "DEBUG" needs to be defined earlier
  ACPI: EC: add leading zeros to debug messages
  ACPI: EC: fix dmesg spam regression
  ACPI: DMI blacklist to reduce console warnings on OSI(Linux) systems.
  ACPI: Add ThinkPad R61, ThinkPad T61 to OSI(Linux) white-list
  ACPI: make _OSI(Linux) console messages smarter
  ACPI: Delete Intel Customer Reference Board (CRB) from OSI(Linux) DMI list
  ACPI: on OSI(Linux), print needed DMI rather than requesting dmidecode output
  ACPI: create acpi_dmi_dump()
  DMI: create dmi_get_slot()
  DMI: move dmi_available declaration to linux/dmi.h
  ACPI: processor: Fix null pointer dereference in throttling
This commit is contained in:
Linus Torvalds 2008-01-24 08:09:50 -08:00
parent 9c09a95cf4 63eac9badb
commit 668ebab44c
11 changed files with 591 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

381
drivers/acpi/blacklist.c
View File

@ -3,6 +3,7 @@
*
* 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>
@ -50,6 +51,8 @@ struct acpi_blacklist_item {
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.
@ -165,5 +168,383 @@ int __init acpi_blacklisted(void)
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 5050"),
* 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"),
*/
{
.callback = dmi_disable_osi_linux,
.ident = "Acer, inc.",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer, inc."),
},
},
/*
* Disable OSI(Linux) warnings on all "Acer"
*
* _OSI(Linux) effect unknown:
* DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
* 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, breaks suspend to disk */
.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"),
*/
{
.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 */

2
drivers/acpi/bus.c
View File

@ -200,7 +200,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
* Get device's current power state
*/
acpi_bus_get_power(device->handle, &device->power.state);
if (state == device->power.state) {
if ((state == device->power.state) && !device->flags.force_power_state) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
state));
return 0;

26
drivers/acpi/ec.c
View File

@ -26,6 +26,9 @@
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
/* Uncomment next line to get verbose print outs*/
/* #define DEBUG */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
@ -47,9 +50,6 @@
#undef PREFIX
#define PREFIX "ACPI: EC: "
/* Uncomment next line to get verbose print outs*/
/* #define DEBUG */
/* EC status register */
#define ACPI_EC_FLAG_OBF 0x01 /* Output buffer full */
#define ACPI_EC_FLAG_IBF 0x02 /* Input buffer full */
@ -82,6 +82,7 @@ enum {
EC_FLAGS_ADDRESS, /* Address is being written */
EC_FLAGS_NO_WDATA_GPE, /* Don't expect WDATA GPE event */
EC_FLAGS_WDATA, /* Data is being written */
EC_FLAGS_NO_OBF1_GPE, /* Don't expect GPE before read */
};
static int acpi_ec_remove(struct acpi_device *device, int type);
@ -138,26 +139,26 @@ static struct acpi_ec {
static inline u8 acpi_ec_read_status(struct acpi_ec *ec)
{
u8 x = inb(ec->command_addr);
pr_debug(PREFIX "---> status = 0x%2x\n", x);
pr_debug(PREFIX "---> status = 0x%2.2x\n", x);
return x;
}
static inline u8 acpi_ec_read_data(struct acpi_ec *ec)
{
u8 x = inb(ec->data_addr);
pr_debug(PREFIX "---> data = 0x%2x\n", x);
pr_debug(PREFIX "---> data = 0x%2.2x\n", x);
return inb(ec->data_addr);
}
static inline void acpi_ec_write_cmd(struct acpi_ec *ec, u8 command)
{
pr_debug(PREFIX "<--- command = 0x%2x\n", command);
pr_debug(PREFIX "<--- command = 0x%2.2x\n", command);
outb(command, ec->command_addr);
}
static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
{
pr_debug(PREFIX "<--- data = 0x%2x\n", data);
pr_debug(PREFIX "<--- data = 0x%2.2x\n", data);
outb(data, ec->data_addr);
}
@ -179,6 +180,10 @@ static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event)
static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
{
int ret = 0;
if (unlikely(event == ACPI_EC_EVENT_OBF_1 &&
test_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags)))
force_poll = 1;
if (unlikely(test_bit(EC_FLAGS_ADDRESS, &ec->flags) &&
test_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags)))
force_poll = 1;
@ -192,7 +197,12 @@ static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
goto end;
clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
if (acpi_ec_check_status(ec, event)) {
if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) {
if (event == ACPI_EC_EVENT_OBF_1) {
/* miss OBF_1 GPE, don't expect it */
pr_info(PREFIX "missing OBF confirmation, "
"don't expect it any longer.\n");
set_bit(EC_FLAGS_NO_OBF1_GPE, &ec->flags);
} else if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) {
/* miss address GPE, don't expect it anymore */
pr_info(PREFIX "missing address confirmation, "
"don't expect it any longer.\n");

40
drivers/acpi/fan.c
View File

@ -47,6 +47,8 @@ MODULE_LICENSE("GPL");
static int acpi_fan_add(struct acpi_device *device);
static int acpi_fan_remove(struct acpi_device *device, int type);
static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state);
static int acpi_fan_resume(struct acpi_device *device);
static const struct acpi_device_id fan_device_ids[] = {
{"PNP0C0B", 0},
@ -61,6 +63,8 @@ static struct acpi_driver acpi_fan_driver = {
.ops = {
.add = acpi_fan_add,
.remove = acpi_fan_remove,
.suspend = acpi_fan_suspend,
.resume = acpi_fan_resume,
},
};
@ -191,6 +195,10 @@ static int acpi_fan_add(struct acpi_device *device)
goto end;
}
device->flags.force_power_state = 1;
acpi_bus_set_power(device->handle, state);
device->flags.force_power_state = 0;
result = acpi_fan_add_fs(device);
if (result)
goto end;
@ -216,6 +224,38 @@ static int acpi_fan_remove(struct acpi_device *device, int type)
return 0;
}
static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state)
{
if (!device)
return -EINVAL;
acpi_bus_set_power(device->handle, ACPI_STATE_D0);
return AE_OK;
}
static int acpi_fan_resume(struct acpi_device *device)
{
int result = 0;
int power_state = 0;
if (!device)
return -EINVAL;
result = acpi_bus_get_power(device->handle, &power_state);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error reading fan power state\n"));
return result;
}
device->flags.force_power_state = 1;
acpi_bus_set_power(device->handle, power_state);
device->flags.force_power_state = 0;
return result;
}
static int __init acpi_fan_init(void)
{
int result = 0;

173
drivers/acpi/osl.c
View File

@ -77,11 +77,55 @@ static struct workqueue_struct *kacpi_notify_wq;
#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
static char osi_additional_string[OSI_STRING_LENGTH_MAX];
static int osi_linux; /* disable _OSI(Linux) by default */
/*
* "Ode to _OSI(Linux)"
*
* osi_linux -- Control response to BIOS _OSI(Linux) query.
*
* As Linux evolves, the features that it supports change.
* So an OSI string such as "Linux" is not specific enough
* to be useful across multiple versions of Linux. It
* doesn't identify any particular feature, interface,
* or even any particular version of Linux...
*
* Unfortunately, Linux-2.6.22 and earlier responded "yes"
* to a BIOS _OSI(Linux) query. When
* a reference mobile BIOS started using it, its use
* started to spread to many vendor platforms.
* As it is not supportable, we need to halt that spread.
*
* Today, most BIOS references to _OSI(Linux) are noise --
* they have no functional effect and are just dead code
* carried over from the reference BIOS.
*
* The next most common case is that _OSI(Linux) harms Linux,
* usually by causing the BIOS to follow paths that are
* not tested during Windows validation.
*
* Finally, there is a short list of platforms
* where OSI(Linux) benefits Linux.
*
* In Linux-2.6.23, OSI(Linux) is first disabled by default.
* DMI is used to disable the dmesg warning about OSI(Linux)
* on platforms where it is known to have no effect.
* But a dmesg warning remains for systems where
* we do not know if OSI(Linux) is good or bad for the system.
* DMI is also used to enable OSI(Linux) for the machines
* that are known to need it.
*
* BIOS writers should NOT query _OSI(Linux) on future systems.
* It will be ignored by default, and to get Linux to
* not ignore it will require a kernel source update to
* add a DMI entry, or a boot-time "acpi_osi=Linux" invocation.
*/
#define OSI_LINUX_ENABLE 0
#ifdef CONFIG_DMI
static struct __initdata dmi_system_id acpi_osl_dmi_table[];
#endif
struct osi_linux {
unsigned int enable:1;
unsigned int dmi:1;
unsigned int cmdline:1;
unsigned int known:1;
} osi_linux = { OSI_LINUX_ENABLE, 0, 0, 0};
static void __init acpi_request_region (struct acpi_generic_address *addr,
unsigned int length, char *desc)
@ -133,7 +177,6 @@ device_initcall(acpi_reserve_resources);
acpi_status __init acpi_os_initialize(void)
{
dmi_check_system(acpi_osl_dmi_table);
return AE_OK;
}
@ -964,13 +1007,37 @@ static int __init acpi_os_name_setup(char *str)
__setup("acpi_os_name=", acpi_os_name_setup);
static void enable_osi_linux(int enable) {
static void __init set_osi_linux(unsigned int enable)
{
if (osi_linux.enable != enable) {
osi_linux.enable = enable;
printk(KERN_NOTICE PREFIX "%sed _OSI(Linux)\n",
enable ? "Add": "Delet");
}
return;
}
if (osi_linux != enable)
printk(KERN_INFO PREFIX "%sabled _OSI(Linux)\n",
enable ? "En": "Dis");
static void __init acpi_cmdline_osi_linux(unsigned int enable)
{
osi_linux.cmdline = 1; /* cmdline set the default */
set_osi_linux(enable);
return;
}
void __init acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d)
{
osi_linux.dmi = 1; /* DMI knows that this box asks OSI(Linux) */
printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
if (enable == -1)
return;
osi_linux.known = 1; /* DMI knows which OSI(Linux) default needed */
set_osi_linux(enable);
osi_linux = enable;
return;
}
@ -987,12 +1054,12 @@ static int __init acpi_osi_setup(char *str)
printk(KERN_INFO PREFIX "_OSI method disabled\n");
acpi_gbl_create_osi_method = FALSE;
} else if (!strcmp("!Linux", str)) {
enable_osi_linux(0);
acpi_cmdline_osi_linux(0); /* !enable */
} else if (*str == '!') {
if (acpi_osi_invalidate(++str) == AE_OK)
printk(KERN_INFO PREFIX "Deleted _OSI(%s)\n", str);
} else if (!strcmp("Linux", str)) {
enable_osi_linux(1);
acpi_cmdline_osi_linux(1); /* enable */
} else if (*osi_additional_string == '\0') {
strncpy(osi_additional_string, str, OSI_STRING_LENGTH_MAX);
printk(KERN_INFO PREFIX "Added _OSI(%s)\n", str);
@ -1141,6 +1208,34 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
return (AE_OK);
}
/**
* acpi_dmi_dump - dump DMI slots needed for blacklist entry
*
* Returns 0 on success
*/
int acpi_dmi_dump(void)
{
if (!dmi_available)
return -1;
printk(KERN_NOTICE PREFIX "DMI System Vendor: %s\n",
dmi_get_slot(DMI_SYS_VENDOR));
printk(KERN_NOTICE PREFIX "DMI Product Name: %s\n",
dmi_get_slot(DMI_PRODUCT_NAME));
printk(KERN_NOTICE PREFIX "DMI Product Version: %s\n",
dmi_get_slot(DMI_PRODUCT_VERSION));
printk(KERN_NOTICE PREFIX "DMI Board Name: %s\n",
dmi_get_slot(DMI_BOARD_NAME));
printk(KERN_NOTICE PREFIX "DMI BIOS Vendor: %s\n",
dmi_get_slot(DMI_BIOS_VENDOR));
printk(KERN_NOTICE PREFIX "DMI BIOS Date: %s\n",
dmi_get_slot(DMI_BIOS_DATE));
return 0;
}
/******************************************************************************
*
* FUNCTION: acpi_os_validate_interface
@ -1160,13 +1255,29 @@ acpi_os_validate_interface (char *interface)
if (!strncmp(osi_additional_string, interface, OSI_STRING_LENGTH_MAX))
return AE_OK;
if (!strcmp("Linux", interface)) {
printk(KERN_WARNING PREFIX
"System BIOS is requesting _OSI(Linux)\n");
printk(KERN_WARNING PREFIX
"If \"acpi_osi=Linux\" works better,\n"
"Please send dmidecode "
"to linux-acpi@vger.kernel.org\n");
if(osi_linux)
printk(KERN_NOTICE PREFIX
"BIOS _OSI(Linux) query %s%s\n",
osi_linux.enable ? "honored" : "ignored",
osi_linux.cmdline ? " via cmdline" :
osi_linux.dmi ? " via DMI" : "");
if (!osi_linux.dmi) {
if (acpi_dmi_dump())
printk(KERN_NOTICE PREFIX
"[please extract dmidecode output]\n");
printk(KERN_NOTICE PREFIX
"Please send DMI info above to "
"linux-acpi@vger.kernel.org\n");
}
if (!osi_linux.known && !osi_linux.cmdline) {
printk(KERN_NOTICE PREFIX
"If \"acpi_osi=%sLinux\" works better, "
"please notify linux-acpi@vger.kernel.org\n",
osi_linux.enable ? "!" : "");
}
if (osi_linux.enable)
return AE_OK;
}
return AE_SUPPORT;
@ -1198,28 +1309,4 @@ acpi_os_validate_address (
return AE_OK;
}
#ifdef CONFIG_DMI
static int dmi_osi_linux(const struct dmi_system_id *d)
{
printk(KERN_NOTICE "%s detected: enabling _OSI(Linux)\n", d->ident);
enable_osi_linux(1);
return 0;
}
static struct dmi_system_id acpi_osl_dmi_table[] __initdata = {
/*
* Boxes that need _OSI(Linux)
*/
{
.callback = dmi_osi_linux,
.ident = "Intel Napa CRB",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
DMI_MATCH(DMI_BOARD_NAME, "MPAD-MSAE Customer Reference Boards"),
},
},
{}
};
#endif /* CONFIG_DMI */
#endif

4
drivers/acpi/processor_throttling.c
View File

@ -775,12 +775,12 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
acpi_processor_get_throttling_states(pr) ||
acpi_processor_get_platform_limit(pr))
{
if (acpi_processor_get_fadt_info(pr))
return 0;
pr->throttling.acpi_processor_get_throttling =
&acpi_processor_get_throttling_fadt;
pr->throttling.acpi_processor_set_throttling =
&acpi_processor_set_throttling_fadt;
if (acpi_processor_get_fadt_info(pr))
return 0;
} else {
pr->throttling.acpi_processor_get_throttling =
&acpi_processor_get_throttling_ptc;

2
drivers/firmware/dmi-id.c
View File

@ -173,8 +173,6 @@ static struct device *dmi_dev;
if (dmi_get_system_info(_field)) \
sys_dmi_attributes[i++] = &sys_dmi_##_name##_attr.dev_attr.attr;
extern int dmi_available;
/* In a separate function to keep gcc 3.2 happy - do NOT merge this in
dmi_id_init! */
static void __init dmi_id_init_attr_table(void)

8
drivers/firmware/dmi_scan.c
View File

@ -470,3 +470,11 @@ int dmi_get_year(int field)
return year;
}
/**
* dmi_get_slot - return dmi_ident[slot]
* @slot: index into dmi_ident[]
*/
char *dmi_get_slot(int slot)
{
return(dmi_ident[slot]);
}

3
include/acpi/acpi_bus.h
View File

@ -168,7 +168,8 @@ struct acpi_device_flags {
u32 power_manageable:1;
u32 performance_manageable:1;
u32 wake_capable:1; /* Wakeup(_PRW) supported? */
u32 reserved:20;
u32 force_power_state:1;
u32 reserved:19;
};
/* File System */

7
include/linux/acpi.h
View File

@ -40,6 +40,7 @@
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_numa.h>
#include <asm/acpi.h>
#include <linux/dmi.h>
#ifdef CONFIG_ACPI
@ -192,7 +193,9 @@ extern int ec_transaction(u8 command,
#endif /*CONFIG_ACPI_EC*/
extern int acpi_blacklisted(void);
extern void acpi_bios_year(char *s);
#ifdef CONFIG_DMI
extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
#endif
#ifdef CONFIG_ACPI_NUMA
int acpi_get_pxm(acpi_handle handle);
@ -226,5 +229,5 @@ static inline int acpi_boot_table_init(void)
return 0;
}
#endif /* CONFIG_ACPI */
#endif /* !CONFIG_ACPI */
#endif /*_LINUX_ACPI_H*/

4
include/linux/dmi.h
View File

@ -78,6 +78,8 @@ extern const struct dmi_device * dmi_find_device(int type, const char *name,
extern void dmi_scan_machine(void);
extern int dmi_get_year(int field);
extern int dmi_name_in_vendors(const char *str);
extern int dmi_available;
extern char *dmi_get_slot(int slot);
#else
@ -87,6 +89,8 @@ static inline const struct dmi_device * dmi_find_device(int type, const char *na
const struct dmi_device *from) { return NULL; }
static inline int dmi_get_year(int year) { return 0; }
static inline int dmi_name_in_vendors(const char *s) { return 0; }
#define dmi_available 0
static inline char *dmi_get_slot(int slot) { return NULL; }
#endif