linux-imx

/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */

/******************************************************************************

 *

 * Name: acstruct.h - Internal structs

 *

 * Copyright (C) 2000 - 2019, 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;