448 lines
16 KiB
C
448 lines
16 KiB
C
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/******************************************************************************
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*
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* Name: acobject.h - Definition of union acpi_operand_object (Internal object only)
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2008, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#ifndef _ACOBJECT_H
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#define _ACOBJECT_H
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/* acpisrc:struct_defs -- for acpisrc conversion */
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/*
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* The union acpi_operand_object is used to pass AML operands from the dispatcher
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* to the interpreter, and to keep track of the various handlers such as
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* address space handlers and notify handlers. The object is a constant
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* size in order to allow it to be cached and reused.
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*
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* Note: The object is optimized to be aligned and will not work if it is
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* byte-packed.
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*/
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#if ACPI_MACHINE_WIDTH == 64
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#pragma pack(8)
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#else
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#pragma pack(4)
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#endif
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/*******************************************************************************
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*
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* Common Descriptors
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*
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******************************************************************************/
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/*
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* Common area for all objects.
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*
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* descriptor_type is used to differentiate between internal descriptors, and
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* must be in the same place across all descriptors
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*
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* Note: The descriptor_type and Type fields must appear in the identical
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* position in both the struct acpi_namespace_node and union acpi_operand_object
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* structures.
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*/
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#define ACPI_OBJECT_COMMON_HEADER \
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union acpi_operand_object *next_object; /* Objects linked to parent NS node */\
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u8 descriptor_type; /* To differentiate various internal objs */\
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u8 type; /* acpi_object_type */\
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u16 reference_count; /* For object deletion management */\
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u8 flags;
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/*
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* Note: There are 3 bytes available here before the
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* next natural alignment boundary (for both 32/64 cases)
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*/
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/* Values for Flag byte above */
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#define AOPOBJ_AML_CONSTANT 0x01
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#define AOPOBJ_STATIC_POINTER 0x02
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#define AOPOBJ_DATA_VALID 0x04
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#define AOPOBJ_OBJECT_INITIALIZED 0x08
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#define AOPOBJ_SETUP_COMPLETE 0x10
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#define AOPOBJ_SINGLE_DATUM 0x20
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#define AOPOBJ_INVALID 0x40 /* Used if host OS won't allow an op_region address */
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#define AOPOBJ_MODULE_LEVEL 0x80
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/******************************************************************************
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*
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* Basic data types
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*
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*****************************************************************************/
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struct acpi_object_common {
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ACPI_OBJECT_COMMON_HEADER};
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struct acpi_object_integer {
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ACPI_OBJECT_COMMON_HEADER u8 fill[3]; /* Prevent warning on some compilers */
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acpi_integer value;
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};
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/*
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* Note: The String and Buffer object must be identical through the Pointer
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* and length elements. There is code that depends on this.
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*
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* Fields common to both Strings and Buffers
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*/
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#define ACPI_COMMON_BUFFER_INFO(_type) \
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_type *pointer; \
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u32 length;
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struct acpi_object_string { /* Null terminated, ASCII characters only */
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(char) /* String in AML stream or allocated string */
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};
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struct acpi_object_buffer {
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_BUFFER_INFO(u8) /* Buffer in AML stream or allocated buffer */
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u32 aml_length;
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u8 *aml_start;
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struct acpi_namespace_node *node; /* Link back to parent node */
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};
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struct acpi_object_package {
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ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Link back to parent node */
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union acpi_operand_object **elements; /* Array of pointers to acpi_objects */
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u8 *aml_start;
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u32 aml_length;
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u32 count; /* # of elements in package */
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};
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/******************************************************************************
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*
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* Complex data types
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*
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*****************************************************************************/
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struct acpi_object_event {
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ACPI_OBJECT_COMMON_HEADER acpi_semaphore os_semaphore; /* Actual OS synchronization object */
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};
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struct acpi_object_mutex {
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ACPI_OBJECT_COMMON_HEADER u8 sync_level; /* 0-15, specified in Mutex() call */
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u16 acquisition_depth; /* Allow multiple Acquires, same thread */
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acpi_mutex os_mutex; /* Actual OS synchronization object */
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acpi_thread_id thread_id; /* Current owner of the mutex */
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struct acpi_thread_state *owner_thread; /* Current owner of the mutex */
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union acpi_operand_object *prev; /* Link for list of acquired mutexes */
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union acpi_operand_object *next; /* Link for list of acquired mutexes */
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struct acpi_namespace_node *node; /* Containing namespace node */
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u8 original_sync_level; /* Owner's original sync level (0-15) */
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};
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struct acpi_object_region {
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ACPI_OBJECT_COMMON_HEADER u8 space_id;
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struct acpi_namespace_node *node; /* Containing namespace node */
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union acpi_operand_object *handler; /* Handler for region access */
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union acpi_operand_object *next;
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acpi_physical_address address;
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u32 length;
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};
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struct acpi_object_method {
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ACPI_OBJECT_COMMON_HEADER u8 method_flags;
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u8 param_count;
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u8 sync_level;
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union acpi_operand_object *mutex;
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u8 *aml_start;
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ACPI_INTERNAL_METHOD implementation;
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u32 aml_length;
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u8 thread_count;
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acpi_owner_id owner_id;
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};
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/******************************************************************************
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*
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* Objects that can be notified. All share a common notify_info area.
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*
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*****************************************************************************/
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/*
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* Common fields for objects that support ASL notifications
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*/
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#define ACPI_COMMON_NOTIFY_INFO \
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union acpi_operand_object *system_notify; /* Handler for system notifies */\
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union acpi_operand_object *device_notify; /* Handler for driver notifies */\
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union acpi_operand_object *handler; /* Handler for Address space */
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struct acpi_object_notify_common { /* COMMON NOTIFY for POWER, PROCESSOR, DEVICE, and THERMAL */
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO};
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struct acpi_object_device {
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ACPI_OBJECT_COMMON_HEADER
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ACPI_COMMON_NOTIFY_INFO struct acpi_gpe_block_info *gpe_block;
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};
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struct acpi_object_power_resource {
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO u32 system_level;
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u32 resource_order;
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};
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struct acpi_object_processor {
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ACPI_OBJECT_COMMON_HEADER
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/* The next two fields take advantage of the 3-byte space before NOTIFY_INFO */
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u8 proc_id;
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u8 length;
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ACPI_COMMON_NOTIFY_INFO acpi_io_address address;
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};
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struct acpi_object_thermal_zone {
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO};
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/******************************************************************************
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*
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* Fields. All share a common header/info field.
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*
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*****************************************************************************/
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/*
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* Common bitfield for the field objects
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* "Field Datum" -- a datum from the actual field object
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* "Buffer Datum" -- a datum from a user buffer, read from or to be written to the field
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*/
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#define ACPI_COMMON_FIELD_INFO \
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u8 field_flags; /* Access, update, and lock bits */\
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u8 attribute; /* From access_as keyword */\
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u8 access_byte_width; /* Read/Write size in bytes */\
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struct acpi_namespace_node *node; /* Link back to parent node */\
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u32 bit_length; /* Length of field in bits */\
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u32 base_byte_offset; /* Byte offset within containing object */\
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u32 value; /* Value to store into the Bank or Index register */\
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u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\
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u8 access_bit_width; /* Read/Write size in bits (8-64) */
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struct acpi_object_field_common { /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Parent Operation Region object (REGION/BANK fields only) */
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};
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struct acpi_object_region_field {
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */
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};
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struct acpi_object_bank_field {
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */
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union acpi_operand_object *bank_obj; /* bank_select Register object */
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};
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struct acpi_object_index_field {
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO
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/*
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* No "RegionObj" pointer needed since the Index and Data registers
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* are each field definitions unto themselves.
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*/
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union acpi_operand_object *index_obj; /* Index register */
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union acpi_operand_object *data_obj; /* Data register */
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};
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/* The buffer_field is different in that it is part of a Buffer, not an op_region */
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struct acpi_object_buffer_field {
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ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *buffer_obj; /* Containing Buffer object */
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};
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/******************************************************************************
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*
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* Objects for handlers
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*
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*****************************************************************************/
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struct acpi_object_notify_handler {
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ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *node; /* Parent device */
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acpi_notify_handler handler;
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void *context;
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};
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struct acpi_object_addr_handler {
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ACPI_OBJECT_COMMON_HEADER u8 space_id;
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u8 handler_flags;
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acpi_adr_space_handler handler;
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struct acpi_namespace_node *node; /* Parent device */
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void *context;
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acpi_adr_space_setup setup;
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union acpi_operand_object *region_list; /* regions using this handler */
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union acpi_operand_object *next;
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};
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/* Flags for address handler (handler_flags) */
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#define ACPI_ADDR_HANDLER_DEFAULT_INSTALLED 0x01
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/******************************************************************************
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*
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* Special internal objects
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*
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*****************************************************************************/
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/*
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* The Reference object is used for these opcodes:
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* Arg[0-6], Local[0-7], index_op, name_op, ref_of_op, load_op, load_table_op, debug_op
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* The Reference.Class differentiates these types.
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*/
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struct acpi_object_reference {
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ACPI_OBJECT_COMMON_HEADER u8 class; /* Reference Class */
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u8 target_type; /* Used for Index Op */
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u8 reserved;
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void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */
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struct acpi_namespace_node *node; /* ref_of or Namepath */
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union acpi_operand_object **where; /* Target of Index */
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u32 value; /* Used for Local/Arg/Index/ddb_handle */
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};
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/* Values for Reference.Class above */
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typedef enum {
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ACPI_REFCLASS_LOCAL = 0, /* Method local */
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ACPI_REFCLASS_ARG = 1, /* Method argument */
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ACPI_REFCLASS_REFOF = 2, /* Result of ref_of() TBD: Split to Ref/Node and Ref/operand_obj? */
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ACPI_REFCLASS_INDEX = 3, /* Result of Index() */
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ACPI_REFCLASS_TABLE = 4, /* ddb_handle - Load(), load_table() */
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ACPI_REFCLASS_NAME = 5, /* Reference to a named object */
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ACPI_REFCLASS_DEBUG = 6, /* Debug object */
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ACPI_REFCLASS_MAX = 6
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} ACPI_REFERENCE_CLASSES;
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/*
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* Extra object is used as additional storage for types that
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* have AML code in their declarations (term_args) that must be
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* evaluated at run time.
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*
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* Currently: Region and field_unit types
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*/
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struct acpi_object_extra {
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ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */
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void *region_context; /* Region-specific data */
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u8 *aml_start;
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u32 aml_length;
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};
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/* Additional data that can be attached to namespace nodes */
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struct acpi_object_data {
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ACPI_OBJECT_COMMON_HEADER acpi_object_handler handler;
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void *pointer;
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};
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/* Structure used when objects are cached for reuse */
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struct acpi_object_cache_list {
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ACPI_OBJECT_COMMON_HEADER union acpi_operand_object *next; /* Link for object cache and internal lists */
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};
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/******************************************************************************
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*
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* union acpi_operand_object Descriptor - a giant union of all of the above
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*
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*****************************************************************************/
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union acpi_operand_object {
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struct acpi_object_common common;
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struct acpi_object_integer integer;
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struct acpi_object_string string;
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struct acpi_object_buffer buffer;
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struct acpi_object_package package;
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struct acpi_object_event event;
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struct acpi_object_method method;
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struct acpi_object_mutex mutex;
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struct acpi_object_region region;
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struct acpi_object_notify_common common_notify;
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struct acpi_object_device device;
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struct acpi_object_power_resource power_resource;
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struct acpi_object_processor processor;
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struct acpi_object_thermal_zone thermal_zone;
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struct acpi_object_field_common common_field;
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struct acpi_object_region_field field;
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struct acpi_object_buffer_field buffer_field;
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struct acpi_object_bank_field bank_field;
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struct acpi_object_index_field index_field;
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struct acpi_object_notify_handler notify;
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struct acpi_object_addr_handler address_space;
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struct acpi_object_reference reference;
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struct acpi_object_extra extra;
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struct acpi_object_data data;
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struct acpi_object_cache_list cache;
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/*
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* Add namespace node to union in order to simplify code that accepts both
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* ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share
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* a common descriptor_type field in order to differentiate them.
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*/
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struct acpi_namespace_node node;
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};
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/******************************************************************************
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*
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* union acpi_descriptor - objects that share a common descriptor identifier
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*
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*****************************************************************************/
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/* Object descriptor types */
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#define ACPI_DESC_TYPE_CACHED 0x01 /* Used only when object is cached */
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#define ACPI_DESC_TYPE_STATE 0x02
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#define ACPI_DESC_TYPE_STATE_UPDATE 0x03
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#define ACPI_DESC_TYPE_STATE_PACKAGE 0x04
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#define ACPI_DESC_TYPE_STATE_CONTROL 0x05
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#define ACPI_DESC_TYPE_STATE_RPSCOPE 0x06
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#define ACPI_DESC_TYPE_STATE_PSCOPE 0x07
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#define ACPI_DESC_TYPE_STATE_WSCOPE 0x08
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#define ACPI_DESC_TYPE_STATE_RESULT 0x09
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#define ACPI_DESC_TYPE_STATE_NOTIFY 0x0A
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#define ACPI_DESC_TYPE_STATE_THREAD 0x0B
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#define ACPI_DESC_TYPE_WALK 0x0C
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#define ACPI_DESC_TYPE_PARSER 0x0D
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#define ACPI_DESC_TYPE_OPERAND 0x0E
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#define ACPI_DESC_TYPE_NAMED 0x0F
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#define ACPI_DESC_TYPE_MAX 0x0F
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struct acpi_common_descriptor {
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void *common_pointer;
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u8 descriptor_type; /* To differentiate various internal objs */
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};
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union acpi_descriptor {
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struct acpi_common_descriptor common;
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union acpi_operand_object object;
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struct acpi_namespace_node node;
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union acpi_parse_object op;
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};
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#pragma pack()
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#endif /* _ACOBJECT_H */
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