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ACPICA: Add acpi_update_interfaces() public interface 

Add new API to allow OSPM to disable/enable specific types of _OSI
interface strings.

ACPICA does not have the knowledge about whether an _OSI interface
string is an OS vendor string or a feature group string and there
isn't any API interface to allow OSPM to install a new interface
string as a feature group string.
This patch simply adds all feature group strings defined by ACPI
specification into the acpi_default_supported_interfaces with
ACPI_OSI_FEATURE flag set to fix this gap.  This patch also adds
codes to keep their default states as ACPI_OSI_INVALID before the
initialization and after the termination.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Conflicts:
	include/acpi/actypes.h (with commit 242b228)
hifive-unleashed-5.1
Lv Zheng 2013-07-22 16:08:16 +08:00 committed by Rafael J. Wysocki
parent 53b1631e3a
commit 2cf9f5bcc8
6 changed files with 114 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/acpi/acpica/aclocal.h
View File

@ -942,6 +942,9 @@ struct acpi_interface_info {
#define ACPI_OSI_INVALID 0x01
#define ACPI_OSI_DYNAMIC 0x02
#define ACPI_OSI_FEATURE 0x04
#define ACPI_OSI_DEFAULT_INVALID 0x08
#define ACPI_OSI_OPTIONAL_FEATURE (ACPI_OSI_FEATURE | ACPI_OSI_DEFAULT_INVALID | ACPI_OSI_INVALID)
struct acpi_port_info {
char *name;

2
drivers/acpi/acpica/acutils.h
View File

@ -470,6 +470,8 @@ acpi_status acpi_ut_install_interface(acpi_string interface_name);
acpi_status acpi_ut_remove_interface(acpi_string interface_name);
acpi_status acpi_ut_update_interfaces(u8 action);
struct acpi_interface_info *acpi_ut_get_interface(acpi_string interface_name);
acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state);

77
drivers/acpi/acpica/utosi.c
View File

@ -77,21 +77,20 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = {
/* Feature Group Strings */
{"Extended Address Space Descriptor", NULL, 0, 0}
{"Extended Address Space Descriptor", NULL, ACPI_OSI_FEATURE, 0},
/*
* All "optional" feature group strings (features that are implemented
* by the host) should be dynamically added by the host via
* acpi_install_interface and should not be manually added here.
*
* Examples of optional feature group strings:
*
* "Module Device"
* "Processor Device"
* "3.0 Thermal Model"
* "3.0 _SCP Extensions"
* "Processor Aggregator Device"
* by the host) should be dynamically modified to VALID by the host via
* acpi_install_interface or acpi_update_interfaces. Such optional feature
* group strings are set as INVALID by default here.
*/
{"Module Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
{"Processor Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
{"3.0 Thermal Model", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
{"3.0 _SCP Extensions", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
{"Processor Aggregator Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}
};
/*******************************************************************************
@ -158,11 +157,20 @@ acpi_status acpi_ut_interface_terminate(void)
while (next_interface) {
acpi_gbl_supported_interfaces = next_interface->next;
/* Only interfaces added at runtime can be freed */
if (next_interface->flags & ACPI_OSI_DYNAMIC) {
/* Only interfaces added at runtime can be freed */
ACPI_FREE(next_interface->name);
ACPI_FREE(next_interface);
} else {
/* Interface is in static list. Reset it to invalid or valid. */
if (next_interface->flags & ACPI_OSI_DEFAULT_INVALID) {
next_interface->flags |= ACPI_OSI_INVALID;
} else {
next_interface->flags &= ~ACPI_OSI_INVALID;
}
}
next_interface = acpi_gbl_supported_interfaces;
@ -276,6 +284,49 @@ acpi_status acpi_ut_remove_interface(acpi_string interface_name)
return (AE_NOT_EXIST);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_update_interfaces
*
* PARAMETERS: action - Actions to be performed during the
* update
*
* RETURN: Status
*
* DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
* strings or/and feature group strings.
* Caller MUST hold acpi_gbl_osi_mutex
*
******************************************************************************/
acpi_status acpi_ut_update_interfaces(u8 action)
{
struct acpi_interface_info *next_interface;
next_interface = acpi_gbl_supported_interfaces;
while (next_interface) {
if (((next_interface->flags & ACPI_OSI_FEATURE) &&
(action & ACPI_FEATURE_STRINGS)) ||
(!(next_interface->flags & ACPI_OSI_FEATURE) &&
(action & ACPI_VENDOR_STRINGS))) {
if (action & ACPI_DISABLE_INTERFACES) {
/* Mark the interfaces as invalid */
next_interface->flags |= ACPI_OSI_INVALID;
} else {
/* Mark the interfaces as valid */
next_interface->flags &= ~ACPI_OSI_INVALID;
}
}
next_interface = next_interface->next;
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_get_interface

29
drivers/acpi/acpica/utxface.c
View File

@ -387,6 +387,34 @@ acpi_status acpi_install_interface_handler(acpi_interface_handler handler)
ACPI_EXPORT_SYMBOL(acpi_install_interface_handler)
/*****************************************************************************
*
* FUNCTION: acpi_update_interfaces
*
* PARAMETERS: action - Actions to be performed during the
* update
*
* RETURN: Status
*
* DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
* string or/and feature group strings.
*
****************************************************************************/
acpi_status acpi_update_interfaces(u8 action)
{
acpi_status status;
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
status = acpi_ut_update_interfaces(action);
acpi_os_release_mutex(acpi_gbl_osi_mutex);
return (status);
}
/*****************************************************************************
*
* FUNCTION: acpi_check_address_range
@ -402,6 +430,7 @@ ACPI_EXPORT_SYMBOL(acpi_install_interface_handler)
* ASL operation region address ranges.
*
****************************************************************************/
u32
acpi_check_address_range(acpi_adr_space_type space_id,
acpi_physical_address address,

2
include/acpi/acpixf.h
View File

@ -147,6 +147,8 @@ acpi_status acpi_install_interface(acpi_string interface_name);
acpi_status acpi_remove_interface(acpi_string interface_name);
acpi_status acpi_update_interfaces(u8 action);
u32
acpi_check_address_range(acpi_adr_space_type space_id,
acpi_physical_address address,

14
include/acpi/actypes.h
View File

@ -1152,4 +1152,18 @@ struct acpi_memory_list {
#define ACPI_OSI_WIN_7 0x0B
#define ACPI_OSI_WIN_8 0x0C
/* _OSI update actions */
#define ACPI_VENDOR_STRINGS 0x01
#define ACPI_FEATURE_STRINGS 0x02
#define ACPI_ENABLE_INTERFACES 0x00
#define ACPI_DISABLE_INTERFACES 0x04
#define ACPI_DISABLE_ALL_VENDOR_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_VENDOR_STRINGS)
#define ACPI_DISABLE_ALL_FEATURE_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_FEATURE_STRINGS)
#define ACPI_DISABLE_ALL_STRINGS (ACPI_DISABLE_INTERFACES | ACPI_VENDOR_STRINGS | ACPI_FEATURE_STRINGS)
#define ACPI_ENABLE_ALL_VENDOR_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_VENDOR_STRINGS)
#define ACPI_ENABLE_ALL_FEATURE_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_FEATURE_STRINGS)
#define ACPI_ENABLE_ALL_STRINGS (ACPI_ENABLE_INTERFACES | ACPI_VENDOR_STRINGS | ACPI_FEATURE_STRINGS)
#endif /* __ACTYPES_H__ */