diff options
Diffstat (limited to 'include/acpi/acobject.h')
| -rw-r--r-- | include/acpi/acobject.h | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/include/acpi/acobject.h b/include/acpi/acobject.h index e9657dac69b7..eb6f038b03d9 100644 --- a/include/acpi/acobject.h +++ b/include/acpi/acobject.h @@ -308,18 +308,34 @@ struct acpi_object_addr_handler { *****************************************************************************/ /* - * 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 + * 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 target_type; /* Used for index_op */ - u16 opcode; + 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; - union acpi_operand_object **where; - u32 offset; /* Used for arg_op, local_op, and index_op */ + 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 @@ -379,6 +395,13 @@ union acpi_operand_object { 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; }; /****************************************************************************** |