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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/acpi/acobject.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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+
+/******************************************************************************
+ *
+ * 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 owning_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 */