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/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/******************************************************************************
*
* Name: acstruct.h - Internal structs
*
* Copyright (C) 2000 - 2021, Intel Corp.
*
*****************************************************************************/
#ifndef __ACSTRUCT_H__
#define __ACSTRUCT_H__
/* acpisrc:struct_defs -- for acpisrc conversion */
/*****************************************************************************
*
* Tree walking typedefs and structs
*
****************************************************************************/
/*
* Walk state - current state of a parse tree walk. Used for both a leisurely
* stroll through the tree (for whatever reason), and for control method
* execution.
*/
#define ACPI_NEXT_OP_DOWNWARD 1
#define ACPI_NEXT_OP_UPWARD 2
/*
* Groups of definitions for walk_type used for different implementations of
* walkers (never simultaneously) - flags for interpreter:
*/
#define ACPI_WALK_NON_METHOD 0
#define ACPI_WALK_METHOD 0x01
#define ACPI_WALK_METHOD_RESTART 0x02
struct acpi_walk_state {
struct acpi_walk_state *next; /* Next walk_state in list */
u8 descriptor_type; /* To differentiate various internal objs */
u8 walk_type;
u16 opcode; /* Current AML opcode */
u8 next_op_info; /* Info about next_op */
u8 num_operands; /* Stack pointer for Operands[] array */
u8 operand_index; /* Index into operand stack, to be used by acpi_ds_obj_stack_push */
acpi_owner_id owner_id; /* Owner of objects created during the walk */
u8 last_predicate; /* Result of last predicate */
u8 current_result;
u8 return_used;
u8 scope_depth;
u8 pass_number; /* Parse pass during table load */
u8 namespace_override; /* Override existing objects */
u8 result_size; /* Total elements for the result stack */
u8 result_count; /* Current number of occupied elements of result stack */
u8 *aml;
u32 arg_types;
u32 method_breakpoint; /* For single stepping */
u32 user_breakpoint; /* User AML breakpoint */
u32 parse_flags;
struct acpi_parse_state parser_state; /* Current state of parser */
u32 prev_arg_types;
u32 arg_count; /* push for fixed or var args */
u16 method_nesting_depth;
u8 method_is_nested;
struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS]; /* Control method arguments */
struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS]; /* Control method locals */
union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS + 1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
union acpi_operand_object **params;
u8 *aml_last_while;
union acpi_operand_object **caller_return_desc;
union acpi_generic_state *control_state; /* List of control states (nested IFs) */
struct acpi_namespace_node *deferred_node; /* Used when executing deferred opcodes */
union acpi_operand_object *implicit_return_obj;
struct acpi_namespace_node *method_call_node; /* Called method Node */
union acpi_parse_object *method_call_op; /* method_call Op if running a method */
union acpi_operand_object *method_desc; /* Method descriptor if running a method */
struct acpi_namespace_node *method_node; /* Method node if running a method */
char *method_pathname; /* Full pathname of running method */
union acpi_parse_object *op; /* Current parser op */
const struct acpi_opcode_info *op_info; /* Info on current opcode */
union acpi_parse_object *origin; /* Start of walk [Obsolete] */
union acpi_operand_object *result_obj;
union acpi_generic_state *results; /* Stack of accumulated results */
union acpi_operand_object *return_desc; /* Return object, if any */
union acpi_generic_state *scope_info; /* Stack of nested scopes */
union acpi_parse_object *prev_op; /* Last op that was processed */
union acpi_parse_object *next_op; /* next op to be processed */
struct acpi_thread_state *thread;
acpi_parse_downwards descending_callback;
acpi_parse_upwards ascending_callback;
};
/* Info used by acpi_ns_initialize_objects and acpi_ds_initialize_objects */
struct acpi_init_walk_info {
u32 table_index;
u32 object_count;
u32 method_count;
u32 serial_method_count;
u32 non_serial_method_count;
u32 serialized_method_count;
u32 device_count;
u32 op_region_count;
u32 field_count;
u32 buffer_count;
u32 package_count;
u32 op_region_init;
u32 field_init;
u32 buffer_init;
u32 package_init;
acpi_owner_id owner_id;
};
struct acpi_get_devices_info {
acpi_walk_callback user_function;
void *context;
const char *hid;
};
union acpi_aml_operands {
union acpi_operand_object *operands[7];
struct {
struct acpi_object_integer *type;
struct acpi_object_integer *code;
struct acpi_object_integer *argument;
} fatal;
struct {
union acpi_operand_object *source;
struct acpi_object_integer *index;
union acpi_operand_object *target;
} index;
struct {
union acpi_operand_object *source;
struct acpi_object_integer *index;
struct acpi_object_integer *length;
union acpi_operand_object *target;
} mid;
};
/*
* Structure used to pass object evaluation information and parameters.
* Purpose is to reduce CPU stack use.
*/
struct acpi_evaluate_info {
/* The first 3 elements are passed by the caller to acpi_ns_evaluate */
struct acpi_namespace_node *prefix_node; /* Input: starting node */
const char *relative_pathname; /* Input: path relative to prefix_node */
union acpi_operand_object **parameters; /* Input: argument list */
struct acpi_namespace_node *node; /* Resolved node (prefix_node:relative_pathname) */
union acpi_operand_object *obj_desc; /* Object attached to the resolved node */
char *full_pathname; /* Full pathname of the resolved node */
const union acpi_predefined_info *predefined; /* Used if Node is a predefined name */
union acpi_operand_object *return_object; /* Object returned from the evaluation */
union acpi_operand_object *parent_package; /* Used if return object is a Package */
u32 return_flags; /* Used for return value analysis */
u32 return_btype; /* Bitmapped type of the returned object */
u16 param_count; /* Count of the input argument list */
u16 node_flags; /* Same as Node->Flags */
u8 pass_number; /* Parser pass number */
u8 return_object_type; /* Object type of the returned object */
u8 flags; /* General flags */
};
/* Values for Flags above */
#define ACPI_IGNORE_RETURN_VALUE 1
/* Defines for return_flags field above */
#define ACPI_OBJECT_REPAIRED 1
#define ACPI_OBJECT_WRAPPED 2
/* Info used by acpi_ns_initialize_devices */
struct acpi_device_walk_info {
struct acpi_table_desc *table_desc;
struct acpi_evaluate_info *evaluate_info;
u32 device_count;
u32 num_STA;
u32 num_INI;
};
/* Info used by Acpi acpi_db_display_fields */
struct acpi_region_walk_info {
u32 debug_level;
u32 count;
acpi_owner_id owner_id;
u8 display_type;
u32 address_space_id;
};
/* TBD: [Restructure] Merge with struct above */
struct acpi_walk_info {
u32 debug_level;
u32 count;
acpi_owner_id owner_id;
u8 display_type;
};
/* Display Types */
#define ACPI_DISPLAY_SUMMARY (u8) 0
#define ACPI_DISPLAY_OBJECTS (u8) 1
#define ACPI_DISPLAY_MASK (u8) 1
#define ACPI_DISPLAY_SHORT (u8) 2
#endif
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