linux/drivers/acpi/acpica/acobject.h

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/******************************************************************************
*
* Name: acobject.h - Definition of union acpi_operand_object (Internal object only)
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2013, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#ifndef _ACOBJECT_H
#define _ACOBJECT_H
/* acpisrc:struct_defs -- for acpisrc conversion */
/*
* The union acpi_operand_object is used to pass AML operands from the dispatcher
* to the interpreter, and to keep track of the various handlers such as
* address space handlers and notify handlers. The object is a constant
* size in order to allow it to be cached and reused.
*
* Note: The object is optimized to be aligned and will not work if it is
* byte-packed.
*/
#if ACPI_MACHINE_WIDTH == 64
#pragma pack(8)
#else
#pragma pack(4)
#endif
/*******************************************************************************
*
* Common Descriptors
*
******************************************************************************/
/*
* Common area for all objects.
*
* descriptor_type is used to differentiate between internal descriptors, and
* must be in the same place across all descriptors
ACPI: ACPICA 20060331 Implemented header file support for the following additional ACPI tables: ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, all current and known ACPI tables are now defined in the ACPICA headers and are available for use by device drivers and other software. Implemented support to allow tables that contain ACPI names with invalid characters to be loaded. Previously, this would cause the table load to fail, but since there are several known cases of such tables on existing machines, this change was made to enable ACPI support for them. Also, this matches the behavior of the Microsoft ACPI implementation. https://bugzilla.novell.com/show_bug.cgi?id=147621 Fixed a couple regressions introduced during the memory optimization in the 20060317 release. The namespace node definition required additional reorganization and an internal datatype that had been changed to 8-bit was restored to 32-bit. (Valery Podrezov) Fixed a problem where a null pointer passed to acpi_ut_delete_generic_state() could be passed through to acpi_os_release_object which is unexpected. Such null pointers are now trapped and ignored, matching the behavior of the previous implementation before the deployment of acpi_os_release_object(). (Valery Podrezov, Fiodor Suietov) Fixed a memory mapping leak during the deletion of a SystemMemory operation region where a cached memory mapping was not deleted. This became a noticeable problem for operation regions that are defined within frequently used control methods. (Dana Meyers) Reorganized the ACPI table header files into two main files: one for the ACPI tables consumed by the ACPICA core, and another for the miscellaneous ACPI tables that are consumed by the drivers and other software. The various FADT definitions were merged into one common section and three different tables (ACPI 1.0, 1.0+, and 2.0) Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-03-31 07:00:00 +02:00
*
* Note: The descriptor_type and Type fields must appear in the identical
* position in both the struct acpi_namespace_node and union acpi_operand_object
* structures.
*/
#define ACPI_OBJECT_COMMON_HEADER \
union acpi_operand_object *next_object; /* Objects linked to parent NS node */\
u8 descriptor_type; /* To differentiate various internal objs */\
u8 type; /* acpi_object_type */\
u16 reference_count; /* For object deletion management */\
u8 flags;
/*
* Note: There are 3 bytes available here before the
* next natural alignment boundary (for both 32/64 cases)
*/
/* Values for Flag byte above */
#define AOPOBJ_AML_CONSTANT 0x01 /* Integer is an AML constant */
#define AOPOBJ_STATIC_POINTER 0x02 /* Data is part of an ACPI table, don't delete */
#define AOPOBJ_DATA_VALID 0x04 /* Object is initialized and data is valid */
#define AOPOBJ_OBJECT_INITIALIZED 0x08 /* Region is initialized, _REG was run */
#define AOPOBJ_SETUP_COMPLETE 0x10 /* Region setup is complete */
#define AOPOBJ_INVALID 0x20 /* Host OS won't allow a Region address */
/******************************************************************************
*
* Basic data types
*
*****************************************************************************/
struct acpi_object_common {
ACPI_OBJECT_COMMON_HEADER};
struct acpi_object_integer {
ACPI_OBJECT_COMMON_HEADER u8 fill[3]; /* Prevent warning on some compilers */
u64 value;
};
/*
* Note: The String and Buffer object must be identical through the
* pointer and length elements. There is code that depends on this.
*
* Fields common to both Strings and Buffers
*/
#define ACPI_COMMON_BUFFER_INFO(_type) \
_type *pointer; \
u32 length;
struct acpi_object_string { /* Null terminated, ASCII characters only */
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(char) /* String in AML stream or allocated string */
};
struct acpi_object_buffer {
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(u8) /* Buffer in AML stream or allocated buffer */
u32 aml_length;
u8 *aml_start;
struct acpi_namespace_node *node; /* Link back to parent node */
};
struct acpi_object_package {
ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Link back to parent node */
union acpi_operand_object **elements; /* Array of pointers to acpi_objects */
u8 *aml_start;
u32 aml_length;
u32 count; /* # of elements in package */
};
/******************************************************************************
*
* Complex data types
*
*****************************************************************************/
struct acpi_object_event {
ACPI: ACPICA 20060623 Implemented a new acpi_spinlock type for the OSL lock interfaces. This allows the type to be customized to the host OS for improved efficiency (since a spinlock is usually a very small object.) Implemented support for "ignored" bits in the ACPI registers. According to the ACPI specification, these bits should be preserved when writing the registers via a read/modify/write cycle. There are 3 bits preserved in this manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. http://bugzilla.kernel.org/show_bug.cgi?id=3691 Implemented the initial deployment of new OSL mutex interfaces. Since some host operating systems have separate mutex and semaphore objects, this feature was requested. The base code now uses mutexes (and the new mutex interfaces) wherever a binary semaphore was used previously. However, for the current release, the mutex interfaces are defined as macros to map them to the existing semaphore interfaces. Fixed several problems with the support for the control method SyncLevel parameter. The SyncLevel now works according to the ACPI specification and in concert with the Mutex SyncLevel parameter, since the current SyncLevel is a property of the executing thread. Mutual exclusion for control methods is now implemented with a mutex instead of a semaphore. Fixed three instances of the use of the C shift operator in the bitfield support code (exfldio.c) to avoid the use of a shift value larger than the target data width. The behavior of C compilers is undefined in this case and can cause unpredictable results, and therefore the case must be detected and avoided. (Fiodor Suietov) Added an info message whenever an SSDT or OEM table is loaded dynamically via the Load() or LoadTable() ASL operators. This should improve debugging capability since it will show exactly what tables have been loaded (beyond the tables present in the RSDT/XSDT.) Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-23 23:04:00 +02:00
ACPI_OBJECT_COMMON_HEADER acpi_semaphore os_semaphore; /* Actual OS synchronization object */
};
struct acpi_object_mutex {
ACPI_OBJECT_COMMON_HEADER u8 sync_level; /* 0-15, specified in Mutex() call */
u16 acquisition_depth; /* Allow multiple Acquires, same thread */
ACPI: ACPICA 20060623 Implemented a new acpi_spinlock type for the OSL lock interfaces. This allows the type to be customized to the host OS for improved efficiency (since a spinlock is usually a very small object.) Implemented support for "ignored" bits in the ACPI registers. According to the ACPI specification, these bits should be preserved when writing the registers via a read/modify/write cycle. There are 3 bits preserved in this manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. http://bugzilla.kernel.org/show_bug.cgi?id=3691 Implemented the initial deployment of new OSL mutex interfaces. Since some host operating systems have separate mutex and semaphore objects, this feature was requested. The base code now uses mutexes (and the new mutex interfaces) wherever a binary semaphore was used previously. However, for the current release, the mutex interfaces are defined as macros to map them to the existing semaphore interfaces. Fixed several problems with the support for the control method SyncLevel parameter. The SyncLevel now works according to the ACPI specification and in concert with the Mutex SyncLevel parameter, since the current SyncLevel is a property of the executing thread. Mutual exclusion for control methods is now implemented with a mutex instead of a semaphore. Fixed three instances of the use of the C shift operator in the bitfield support code (exfldio.c) to avoid the use of a shift value larger than the target data width. The behavior of C compilers is undefined in this case and can cause unpredictable results, and therefore the case must be detected and avoided. (Fiodor Suietov) Added an info message whenever an SSDT or OEM table is loaded dynamically via the Load() or LoadTable() ASL operators. This should improve debugging capability since it will show exactly what tables have been loaded (beyond the tables present in the RSDT/XSDT.) Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-23 23:04:00 +02:00
acpi_mutex os_mutex; /* Actual OS synchronization object */
acpi_thread_id thread_id; /* Current owner of the mutex */
struct acpi_thread_state *owner_thread; /* Current owner of the mutex */
union acpi_operand_object *prev; /* Link for list of acquired mutexes */
union acpi_operand_object *next; /* Link for list of acquired mutexes */
struct acpi_namespace_node *node; /* Containing namespace node */
u8 original_sync_level; /* Owner's original sync level (0-15) */
};
struct acpi_object_region {
ACPI_OBJECT_COMMON_HEADER u8 space_id;
struct acpi_namespace_node *node; /* Containing namespace node */
union acpi_operand_object *handler; /* Handler for region access */
union acpi_operand_object *next;
acpi_physical_address address;
u32 length;
};
struct acpi_object_method {
ACPI_OBJECT_COMMON_HEADER u8 info_flags;
u8 param_count;
ACPI: ACPICA 20060623 Implemented a new acpi_spinlock type for the OSL lock interfaces. This allows the type to be customized to the host OS for improved efficiency (since a spinlock is usually a very small object.) Implemented support for "ignored" bits in the ACPI registers. According to the ACPI specification, these bits should be preserved when writing the registers via a read/modify/write cycle. There are 3 bits preserved in this manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. http://bugzilla.kernel.org/show_bug.cgi?id=3691 Implemented the initial deployment of new OSL mutex interfaces. Since some host operating systems have separate mutex and semaphore objects, this feature was requested. The base code now uses mutexes (and the new mutex interfaces) wherever a binary semaphore was used previously. However, for the current release, the mutex interfaces are defined as macros to map them to the existing semaphore interfaces. Fixed several problems with the support for the control method SyncLevel parameter. The SyncLevel now works according to the ACPI specification and in concert with the Mutex SyncLevel parameter, since the current SyncLevel is a property of the executing thread. Mutual exclusion for control methods is now implemented with a mutex instead of a semaphore. Fixed three instances of the use of the C shift operator in the bitfield support code (exfldio.c) to avoid the use of a shift value larger than the target data width. The behavior of C compilers is undefined in this case and can cause unpredictable results, and therefore the case must be detected and avoided. (Fiodor Suietov) Added an info message whenever an SSDT or OEM table is loaded dynamically via the Load() or LoadTable() ASL operators. This should improve debugging capability since it will show exactly what tables have been loaded (beyond the tables present in the RSDT/XSDT.) Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-23 23:04:00 +02:00
u8 sync_level;
union acpi_operand_object *mutex;
u8 *aml_start;
union {
acpi_internal_method implementation;
union acpi_operand_object *handler;
} dispatch;
u32 aml_length;
u8 thread_count;
acpi_owner_id owner_id;
};
/* Flags for info_flags field above */
#define ACPI_METHOD_MODULE_LEVEL 0x01 /* Method is actually module-level code */
#define ACPI_METHOD_INTERNAL_ONLY 0x02 /* Method is implemented internally (_OSI) */
#define ACPI_METHOD_SERIALIZED 0x04 /* Method is serialized */
#define ACPI_METHOD_SERIALIZED_PENDING 0x08 /* Method is to be marked serialized */
#define ACPI_METHOD_MODIFIED_NAMESPACE 0x10 /* Method modified the namespace */
/******************************************************************************
*
* Objects that can be notified. All share a common notify_info area.
*
*****************************************************************************/
/*
* Common fields for objects that support ASL notifications
*/
#define ACPI_COMMON_NOTIFY_INFO \
union acpi_operand_object *notify_list[2]; /* Handlers for system/device notifies */\
union acpi_operand_object *handler; /* Handler for Address space */
struct acpi_object_notify_common { /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO};
struct acpi_object_device {
ACPI_OBJECT_COMMON_HEADER
ACPI_COMMON_NOTIFY_INFO struct acpi_gpe_block_info *gpe_block;
};
struct acpi_object_power_resource {
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO u32 system_level;
u32 resource_order;
};
struct acpi_object_processor {
ACPI_OBJECT_COMMON_HEADER
/* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */
u8 proc_id;
u8 length;
ACPI_COMMON_NOTIFY_INFO acpi_io_address address;
};
struct acpi_object_thermal_zone {
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO};
/******************************************************************************
*
* Fields. All share a common header/info field.
*
*****************************************************************************/
/*
* Common bitfield for the field objects
* "Field Datum" -- a datum from the actual field object
* "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field
*/
#define ACPI_COMMON_FIELD_INFO \
u8 field_flags; /* Access, update, and lock bits */\
u8 attribute; /* From access_as keyword */\
u8 access_byte_width; /* Read/Write size in bytes */\
struct acpi_namespace_node *node; /* Link back to parent node */\
u32 bit_length; /* Length of field in bits */\
u32 base_byte_offset; /* Byte offset within containing object */\
u32 value; /* Value to store into the Bank or Index register */\
u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\
u8 access_length; /* For serial regions/fields */
struct acpi_object_field_common { /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Parent Operation Region object (REGION/BANK fields only) */
};
struct acpi_object_region_field {
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO u16 resource_length;
union acpi_operand_object *region_obj; /* Containing op_region object */
u8 *resource_buffer; /* resource_template for serial regions/fields */
};
struct acpi_object_bank_field {
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */
union acpi_operand_object *bank_obj; /* bank_select Register object */
};
struct acpi_object_index_field {
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO
/*
ACPI: ACPICA 20060421 Removed a device initialization optimization introduced in 20051216 where the _STA method was not run unless an _INI was also present for the same device. This optimization could cause problems because it could allow _INI methods to be run within a not-present device subtree (If a not-present device had no _INI, _STA would not be run, the not-present status would not be discovered, and the children of the device would be incorrectly traversed.) Implemented a new _STA optimization where namespace subtrees that do not contain _INI are identified and ignored during device initialization. Selectively running _STA can significantly improve boot time on large machines (with assistance from Len Brown.) Implemented support for the device initialization case where the returned _STA flags indicate a device not-present but functioning. In this case, _INI is not run, but the device children are examined for presence, as per the ACPI specification. Implemented an additional change to the IndexField support in order to conform to MS behavior. The value written to the Index Register is not simply a byte offset, it is a byte offset in units of the access width of the parent Index Field. (Fiodor Suietov) Defined and deployed a new OSL interface, acpi_os_validate_address(). This interface is called during the creation of all AML operation regions, and allows the host OS to exert control over what addresses it will allow the AML code to access. Operation Regions whose addresses are disallowed will cause a runtime exception when they are actually accessed (will not affect or abort table loading.) Defined and deployed a new OSL interface, acpi_os_validate_interface(). This interface allows the host OS to match the various "optional" interface/behavior strings for the _OSI predefined control method as appropriate (with assistance from Bjorn Helgaas.) Restructured and corrected various problems in the exception handling code paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod (with assistance from Takayoshi Kochi.) Modified the Linux source converter to ignore quoted string literals while converting identifiers from mixed to lower case. This will correct problems with the disassembler and other areas where such strings must not be modified. The ACPI_FUNCTION_* macros no longer require quotes around the function name. This allows the Linux source converter to convert the names, now that the converter ignores quoted strings. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-21 23:15:00 +02:00
* No "RegionObj" pointer needed since the Index and Data registers
* are each field definitions unto themselves.
*/
union acpi_operand_object *index_obj; /* Index register */
union acpi_operand_object *data_obj; /* Data register */
};
/* The buffer_field is different in that it is part of a Buffer, not an op_region */
struct acpi_object_buffer_field {
ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *buffer_obj; /* Containing Buffer object */
};
/******************************************************************************
*
* Objects for handlers
*
*****************************************************************************/
struct acpi_object_notify_handler {
ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Parent device */
u32 handler_type; /* Type: Device/System/Both */
acpi_notify_handler handler; /* Handler address */
void *context;
union acpi_operand_object *next[2]; /* Device and System handler lists */
};
struct acpi_object_addr_handler {
ACPI_OBJECT_COMMON_HEADER u8 space_id;
u8 handler_flags;
acpi_adr_space_handler handler;
struct acpi_namespace_node *node; /* Parent device */
void *context;
acpi_adr_space_setup setup;
union acpi_operand_object *region_list; /* Regions using this handler */
union acpi_operand_object *next;
};
/* Flags for address handler (handler_flags) */
#define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED 0x01
/******************************************************************************
*
* Special internal objects
*
*****************************************************************************/
/*
* The Reference object is used for these opcodes:
* Arg[0-6], Local[0-7], index_op, name_op, ref_of_op, load_op, load_table_op, debug_op
* The Reference.Class differentiates these types.
*/
struct acpi_object_reference {
ACPI_OBJECT_COMMON_HEADER u8 class; /* Reference Class */
u8 target_type; /* Used for Index Op */
u8 reserved;
void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */
struct acpi_namespace_node *node; /* ref_of or Namepath */
union acpi_operand_object **where; /* Target of Index */
u32 value; /* Used for Local/Arg/Index/ddb_handle */
};
/* Values for Reference.Class above */
typedef enum {
ACPI_REFCLASS_LOCAL = 0, /* Method local */
ACPI_REFCLASS_ARG = 1, /* Method argument */
ACPI_REFCLASS_REFOF = 2, /* Result of ref_of() TBD: Split to Ref/Node and Ref/operand_obj? */
ACPI_REFCLASS_INDEX = 3, /* Result of Index() */
ACPI_REFCLASS_TABLE = 4, /* ddb_handle - Load(), load_table() */
ACPI_REFCLASS_NAME = 5, /* Reference to a named object */
ACPI_REFCLASS_DEBUG = 6, /* Debug object */
ACPI_REFCLASS_MAX = 6
} ACPI_REFERENCE_CLASSES;
/*
* Extra object is used as additional storage for types that
* have AML code in their declarations (term_args) that must be
* evaluated at run time.
*
* Currently: Region and field_unit types
*/
struct acpi_object_extra {
ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */
struct acpi_namespace_node *scope_node;
void *region_context; /* Region-specific data */
u8 *aml_start;
u32 aml_length;
};
/* Additional data that can be attached to namespace nodes */
struct acpi_object_data {
ACPI_OBJECT_COMMON_HEADER acpi_object_handler handler;
void *pointer;
};
/* Structure used when objects are cached for reuse */
struct acpi_object_cache_list {
ACPI_OBJECT_COMMON_HEADER union acpi_operand_object *next; /* Link for object cache and internal lists */
};
/******************************************************************************
*
* union acpi_operand_object descriptor - a giant union of all of the above
*
*****************************************************************************/
union acpi_operand_object {
struct acpi_object_common common;
struct acpi_object_integer integer;
struct acpi_object_string string;
struct acpi_object_buffer buffer;
struct acpi_object_package package;
struct acpi_object_event event;
struct acpi_object_method method;
struct acpi_object_mutex mutex;
struct acpi_object_region region;
struct acpi_object_notify_common common_notify;
struct acpi_object_device device;
struct acpi_object_power_resource power_resource;
struct acpi_object_processor processor;
struct acpi_object_thermal_zone thermal_zone;
struct acpi_object_field_common common_field;
struct acpi_object_region_field field;
struct acpi_object_buffer_field buffer_field;
struct acpi_object_bank_field bank_field;
struct acpi_object_index_field index_field;
struct acpi_object_notify_handler notify;
struct acpi_object_addr_handler address_space;
struct acpi_object_reference reference;
struct acpi_object_extra extra;
struct acpi_object_data data;
struct acpi_object_cache_list cache;
/*
* Add namespace node to union in order to simplify code that accepts both
* ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share
* a common descriptor_type field in order to differentiate them.
*/
struct acpi_namespace_node node;
};
/******************************************************************************
*
* union acpi_descriptor - objects that share a common descriptor identifier
*
*****************************************************************************/
/* Object descriptor types */
#define ACPI_DESC_TYPE_CACHED 0x01 /* Used only when object is cached */
#define ACPI_DESC_TYPE_STATE 0x02
#define ACPI_DESC_TYPE_STATE_UPDATE 0x03
#define ACPI_DESC_TYPE_STATE_PACKAGE 0x04
#define ACPI_DESC_TYPE_STATE_CONTROL 0x05
#define ACPI_DESC_TYPE_STATE_RPSCOPE 0x06
#define ACPI_DESC_TYPE_STATE_PSCOPE 0x07
#define ACPI_DESC_TYPE_STATE_WSCOPE 0x08
#define ACPI_DESC_TYPE_STATE_RESULT 0x09
#define ACPI_DESC_TYPE_STATE_NOTIFY 0x0A
#define ACPI_DESC_TYPE_STATE_THREAD 0x0B
#define ACPI_DESC_TYPE_WALK 0x0C
#define ACPI_DESC_TYPE_PARSER 0x0D
#define ACPI_DESC_TYPE_OPERAND 0x0E
#define ACPI_DESC_TYPE_NAMED 0x0F
#define ACPI_DESC_TYPE_MAX 0x0F
struct acpi_common_descriptor {
void *common_pointer;
u8 descriptor_type; /* To differentiate various internal objs */
};
union acpi_descriptor {
struct acpi_common_descriptor common;
union acpi_operand_object object;
struct acpi_namespace_node node;
union acpi_parse_object op;
};
#pragma pack()
#endif /* _ACOBJECT_H */