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Diffstat (limited to 'include/acpi/acobject.h')
| -rw-r--r-- | include/acpi/acobject.h | 501 |
1 files changed, 501 insertions, 0 deletions
diff --git a/include/acpi/acobject.h b/include/acpi/acobject.h new file mode 100644 index 00000000000..036023a940b --- /dev/null +++ b/include/acpi/acobject.h @@ -0,0 +1,501 @@ + +/****************************************************************************** + * + * 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 */ |