linux_kernel/drivers/acpi/acpica/acparser.h

/******************************************************************************
 *
 * Module Name: acparser.h - AML Parser subcomponent prototypes and defines
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2016, Intel Corp.
 * 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 __ACPARSER_H__
#define __ACPARSER_H__

#define OP_HAS_RETURN_VALUE             1

/* Variable number of arguments. This field must be 32 bits */

#define ACPI_VAR_ARGS                   ACPI_UINT32_MAX

#define ACPI_PARSE_DELETE_TREE          0x0001
#define ACPI_PARSE_NO_TREE_DELETE       0x0000
#define ACPI_PARSE_TREE_MASK            0x0001

#define ACPI_PARSE_LOAD_PASS1           0x0010
#define ACPI_PARSE_LOAD_PASS2           0x0020
#define ACPI_PARSE_EXECUTE              0x0030
#define ACPI_PARSE_MODE_MASK            0x0030

#define ACPI_PARSE_DEFERRED_OP          0x0100
#define ACPI_PARSE_DISASSEMBLE          0x0200

#define ACPI_PARSE_MODULE_LEVEL         0x0400

/******************************************************************************
 *
 * Parser interfaces
 *
 *****************************************************************************/

extern const u8 acpi_gbl_short_op_index[];
extern const u8 acpi_gbl_long_op_index[];

/*
 * psxface - Parser external interfaces
 */
acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info);

/*
 * psargs - Parse AML opcode arguments
 */
u8 *acpi_ps_get_next_package_end(struct acpi_parse_state *parser_state);

char *acpi_ps_get_next_namestring(struct acpi_parse_state *parser_state);

void
acpi_ps_get_next_simple_arg(struct acpi_parse_state *parser_state,
			    u32 arg_type, union acpi_parse_object *arg);

acpi_status
acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state,
			  struct acpi_parse_state *parser_state,
			  union acpi_parse_object *arg,
			  u8 possible_method_call);

/* Values for u8 above */

#define ACPI_NOT_METHOD_CALL            FALSE
#define ACPI_POSSIBLE_METHOD_CALL       TRUE

acpi_status
acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
		     struct acpi_parse_state *parser_state,
		     u32 arg_type, union acpi_parse_object **return_arg);

/*
 * psfind
 */
union acpi_parse_object *acpi_ps_find_name(union acpi_parse_object *scope,
					   u32 name, u32 opcode);

union acpi_parse_object *acpi_ps_get_parent(union acpi_parse_object *op);

/*
 * psobject - support for parse object processing
 */
acpi_status
acpi_ps_build_named_op(struct acpi_walk_state *walk_state,
		       u8 *aml_op_start,
		       union acpi_parse_object *unnamed_op,
		       union acpi_parse_object **op);

acpi_status
acpi_ps_create_op(struct acpi_walk_state *walk_state,
		  u8 *aml_op_start, union acpi_parse_object **new_op);

acpi_status
acpi_ps_complete_op(struct acpi_walk_state *walk_state,
		    union acpi_parse_object **op, acpi_status status);

acpi_status
acpi_ps_complete_final_op(struct acpi_walk_state *walk_state,
			  union acpi_parse_object *op, acpi_status status);

/*
 * psopinfo - AML Opcode information
 */
const struct acpi_opcode_info *acpi_ps_get_opcode_info(u16 opcode);

const char *acpi_ps_get_opcode_name(u16 opcode);

u8 acpi_ps_get_argument_count(u32 op_type);

/*
 * psparse - top level parsing routines
 */
acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state);

u32 acpi_ps_get_opcode_size(u32 opcode);

u16 acpi_ps_peek_opcode(struct acpi_parse_state *state);

acpi_status
acpi_ps_complete_this_op(struct acpi_walk_state *walk_state,
			 union acpi_parse_object *op);

acpi_status
acpi_ps_next_parse_state(struct acpi_walk_state *walk_state,
			 union acpi_parse_object *op,
			 acpi_status callback_status);

/*
 * psloop - main parse loop
 */
acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state);

/*
 * psscope - Scope stack management routines
 */
acpi_status
acpi_ps_init_scope(struct acpi_parse_state *parser_state,
		   union acpi_parse_object *root);

union acpi_parse_object *acpi_ps_get_parent_scope(struct acpi_parse_state
						  *state);

u8 acpi_ps_has_completed_scope(struct acpi_parse_state *parser_state);

void
acpi_ps_pop_scope(struct acpi_parse_state *parser_state,
		  union acpi_parse_object **op, u32 *arg_list, u32 *arg_count);

acpi_status
acpi_ps_push_scope(struct acpi_parse_state *parser_state,
		   union acpi_parse_object *op,
		   u32 remaining_args, u32 arg_count);

void acpi_ps_cleanup_scope(struct acpi_parse_state *state);

/*
 * pstree - parse tree manipulation routines
 */
void
acpi_ps_append_arg(union acpi_parse_object *op, union acpi_parse_object *arg);

union acpi_parse_object *acpi_ps_find(union acpi_parse_object *scope,
				      char *path, u16 opcode, u32 create);

union acpi_parse_object *acpi_ps_get_arg(union acpi_parse_object *op, u32 argn);

union acpi_parse_object *acpi_ps_get_depth_next(union acpi_parse_object *origin,
						union acpi_parse_object *op);

/*
 * pswalk - parse tree walk routines
 */
acpi_status
acpi_ps_walk_parsed_aml(union acpi_parse_object *start_op,
			union acpi_parse_object *end_op,
			union acpi_operand_object *mth_desc,
			struct acpi_namespace_node *start_node,
			union acpi_operand_object **params,
			union acpi_operand_object **caller_return_desc,
			acpi_owner_id owner_id,
			acpi_parse_downwards descending_callback,
			acpi_parse_upwards ascending_callback);

acpi_status
acpi_ps_get_next_walk_op(struct acpi_walk_state *walk_state,
			 union acpi_parse_object *op,
			 acpi_parse_upwards ascending_callback);

acpi_status acpi_ps_delete_completed_op(struct acpi_walk_state *walk_state);

void acpi_ps_delete_parse_tree(union acpi_parse_object *root);

/*
 * psutils - parser utilities
 */
union acpi_parse_object *acpi_ps_create_scope_op(u8 *aml);

void acpi_ps_init_op(union acpi_parse_object *op, u16 opcode);

union acpi_parse_object *acpi_ps_alloc_op(u16 opcode, u8 *aml);

void acpi_ps_free_op(union acpi_parse_object *op);

u8 acpi_ps_is_leading_char(u32 c);

u32 acpi_ps_get_name(union acpi_parse_object *op);

void acpi_ps_set_name(union acpi_parse_object *op, u32 name);

/*
 * psdump - display parser tree
 */
u32
acpi_ps_sprint_path(char *buffer_start,
		    u32 buffer_size, union acpi_parse_object *op);

u32
acpi_ps_sprint_op(char *buffer_start,
		  u32 buffer_size, union acpi_parse_object *op);

void acpi_ps_show(union acpi_parse_object *op);

#endif				/* __ACPARSER_H__ */