/****************************************************************************** * * Name: acobject.h - Definition of union acpi_operand_object (Internal object only) * *****************************************************************************/ /* * Copyright (C) 2000 - 2005, R. Byron Moore * 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 /* * 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. */ /******************************************************************************* * * Common Descriptors * ******************************************************************************/ /* * Common area for all objects. * * data_type is used to differentiate between internal descriptors, and MUST * be the first byte in this structure. */ #define ACPI_OBJECT_COMMON_HEADER /* SIZE/ALIGNMENT: 32 bits, one ptr plus trailing 8-bit flag */\ u8 descriptor; /* To differentiate various internal objs */\ u8 type; /* acpi_object_type */\ u16 reference_count; /* For object deletion management */\ union acpi_operand_object *next_object; /* Objects linked to parent NS node */\ u8 flags; \ /* Values for flag byte above */ #define AOPOBJ_AML_CONSTANT 0x01 #define AOPOBJ_STATIC_POINTER 0x02 #define AOPOBJ_DATA_VALID 0x04 #define AOPOBJ_OBJECT_INITIALIZED 0x08 #define AOPOBJ_SETUP_COMPLETE 0x10 #define AOPOBJ_SINGLE_DATUM 0x20 /* * 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 /* SIZE/ALIGNMENT: 24 bits + three 32-bit values */\ u8 field_flags; /* Access, update, and lock bits */\ u8 attribute; /* From access_as keyword */\ u8 access_byte_width; /* Read/Write size in bytes */\ u32 bit_length; /* Length of field in bits */\ u32 base_byte_offset; /* Byte offset within containing object */\ u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\ u8 access_bit_width; /* Read/Write size in bits (8-64) */\ u32 value; /* Value to store into the Bank or Index register */\ struct acpi_namespace_node *node; /* Link back to parent node */ /* * Fields common to both Strings and Buffers */ #define ACPI_COMMON_BUFFER_INFO \ u32 length; /* * Common fields for objects that support ASL notifications */ #define ACPI_COMMON_NOTIFY_INFO \ union acpi_operand_object *system_notify; /* Handler for system notifies */\ union acpi_operand_object *device_notify; /* Handler for driver notifies */\ union acpi_operand_object *handler; /* Handler for Address space */ /****************************************************************************** * * Basic data types * *****************************************************************************/ struct acpi_object_common { ACPI_OBJECT_COMMON_HEADER}; struct acpi_object_integer { ACPI_OBJECT_COMMON_HEADER acpi_integer value; }; /* * Note: The String and Buffer object must be identical through the Pointer * element. There is code that depends on this. */ struct acpi_object_string { /* Null terminated, ASCII characters only */ ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO char *pointer; /* String in AML stream or allocated string */ }; struct acpi_object_buffer { ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO u8 * pointer; /* Buffer in AML stream or allocated buffer */ struct acpi_namespace_node *node; /* Link back to parent node */ u8 *aml_start; u32 aml_length; }; struct acpi_object_package { ACPI_OBJECT_COMMON_HEADER u32 count; /* # of elements in package */ u32 aml_length; u8 *aml_start; struct acpi_namespace_node *node; /* Link back to parent node */ union acpi_operand_object **elements; /* Array of pointers to acpi_objects */ }; /****************************************************************************** * * Complex data types * *****************************************************************************/ struct acpi_object_event { ACPI_OBJECT_COMMON_HEADER void *semaphore; }; #define ACPI_INFINITE_CONCURRENCY 0xFF typedef acpi_status(*ACPI_INTERNAL_METHOD) (struct acpi_walk_state * walk_state); struct acpi_object_method { ACPI_OBJECT_COMMON_HEADER u8 method_flags; u8 param_count; u32 aml_length; void *semaphore; u8 *aml_start; ACPI_INTERNAL_METHOD implementation; u8 concurrency; u8 thread_count; acpi_owner_id owner_id; }; 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 */ struct acpi_thread_state *owner_thread; /* Current owner of the mutex */ void *semaphore; /* Actual OS synchronization object */ 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; union acpi_operand_object *handler; /* Handler for region access */ struct acpi_namespace_node *node; /* Containing namespace node */ union acpi_operand_object *next; u32 length; acpi_physical_address address; }; /****************************************************************************** * * Objects that can be notified. All share a common notify_info area. * *****************************************************************************/ 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 ACPI_COMMON_NOTIFY_INFO u32 proc_id; u32 length; 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. * *****************************************************************************/ 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; /* Containing Operation Region object */ /* (REGION/BANK fields only) */ }; struct acpi_object_region_field { ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */ }; 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 /* * No "region_obj" 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 */ acpi_notify_handler handler; void *context; }; /* Flags for address handler */ #define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED 0x1 struct acpi_object_addr_handler { ACPI_OBJECT_COMMON_HEADER u8 space_id; u16 hflags; 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; }; /****************************************************************************** * * Special internal objects * *****************************************************************************/ /* * The Reference object type is used for these opcodes: * Arg[0-6], Local[0-7], index_op, name_op, zero_op, one_op, ones_op, debug_op */ struct acpi_object_reference { ACPI_OBJECT_COMMON_HEADER u8 target_type; /* Used for index_op */ u16 opcode; u32 offset; /* Used for arg_op, local_op, and index_op */ void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */ struct acpi_namespace_node *node; union acpi_operand_object **where; }; /* * 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 u8 byte_fill1; u16 word_fill1; u32 aml_length; u8 *aml_start; struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */ void *region_context; /* Region-specific data */ }; /* 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; }; /****************************************************************************** * * 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 union acpi_descriptor { u8 descriptor_id; /* To differentiate various internal objs */ union acpi_operand_object object; struct acpi_namespace_node node; union acpi_parse_object op; }; #endif /* _ACOBJECT_H */