linux/drivers/acpi/acpica/psutils.c

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
 *
 * Module Name: psutils - Parser miscellaneous utilities (Parser only)
 *
 * Copyright (C) 2000 - 2023, Intel Corp.
 *
 *****************************************************************************/

#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acconvert.h"

#define _COMPONENT …
ACPI_MODULE_NAME("psutils")

/*******************************************************************************
 *
 * FUNCTION:    acpi_ps_create_scope_op
 *
 * PARAMETERS:  None
 *
 * RETURN:      A new Scope object, null on failure
 *
 * DESCRIPTION: Create a Scope and associated namepath op with the root name
 *
 ******************************************************************************/
union acpi_parse_object *acpi_ps_create_scope_op(u8 *aml)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_ps_init_op
 *
 * PARAMETERS:  op              - A newly allocated Op object
 *              opcode          - Opcode to store in the Op
 *
 * RETURN:      None
 *
 * DESCRIPTION: Initialize a parse (Op) object
 *
 ******************************************************************************/

void acpi_ps_init_op(union acpi_parse_object *op, u16 opcode)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_ps_alloc_op
 *
 * PARAMETERS:  opcode          - Opcode that will be stored in the new Op
 *              aml             - Address of the opcode
 *
 * RETURN:      Pointer to the new Op, null on failure
 *
 * DESCRIPTION: Allocate an acpi_op, choose op type (and thus size) based on
 *              opcode. A cache of opcodes is available for the pure
 *              GENERIC_OP, since this is by far the most commonly used.
 *
 ******************************************************************************/

union acpi_parse_object *acpi_ps_alloc_op(u16 opcode, u8 *aml)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_ps_free_op
 *
 * PARAMETERS:  op              - Op to be freed
 *
 * RETURN:      None.
 *
 * DESCRIPTION: Free an Op object. Either put it on the GENERIC_OP cache list
 *              or actually free it.
 *
 ******************************************************************************/

void acpi_ps_free_op(union acpi_parse_object *op)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    Utility functions
 *
 * DESCRIPTION: Low level character and object functions
 *
 ******************************************************************************/

/*
 * Is "c" a namestring lead character?
 */
u8 acpi_ps_is_leading_char(u32 c)
{ … }

/*
 * Get op's name (4-byte name segment) or 0 if unnamed
 */
u32 acpi_ps_get_name(union acpi_parse_object * op)
{ … }

/*
 * Set op's name
 */
void acpi_ps_set_name(union acpi_parse_object *op, u32 name)
{ … }