linux-imx

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

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

 *

 * Name: aclocal.h - Internal data types used across the ACPI subsystem

 *

 * Copyright (C) 2000 - 2019, Intel Corp.

 *

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

​

#ifndef __ACLOCAL_H__

#define __ACLOCAL_H__

​

/* acpisrc:struct_defs -- for acpisrc conversion */

​

#define ACPI_SERIALIZED                 0xFF

​

typedef u32 acpi_mutex_handle;

#define ACPI_GLOBAL_LOCK                (acpi_semaphore) (-1)

​

/* Total number of aml opcodes defined */

​

#define AML_NUM_OPCODES                 0x83

​

/* Forward declarations */

​

struct acpi_walk_state;

struct acpi_obj_mutex;

union acpi_parse_object;

​

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

 *

 * Mutex typedefs and structs

 *

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

​

/*

 * Predefined handles for the mutex objects used within the subsystem

 * All mutex objects are automatically created by acpi_ut_mutex_initialize.

 *

 * The acquire/release ordering protocol is implied via this list. Mutexes

 * with a lower value must be acquired before mutexes with a higher value.

 *

 * NOTE: any changes here must be reflected in the acpi_gbl_mutex_names

 * table below also!

 */

#define ACPI_MTX_INTERPRETER            0   /* AML Interpreter, main lock */

#define ACPI_MTX_NAMESPACE              1   /* ACPI Namespace */

#define ACPI_MTX_TABLES                 2   /* Data for ACPI tables */

#define ACPI_MTX_EVENTS                 3   /* Data for ACPI events */

#define ACPI_MTX_CACHES                 4   /* Internal caches, general purposes */

#define ACPI_MTX_MEMORY                 5   /* Debug memory tracking lists */

​

#define ACPI_MAX_MUTEX                  5

#define ACPI_NUM_MUTEX                  (ACPI_MAX_MUTEX+1)

​

/* Lock structure for reader/writer interfaces */

​

struct acpi_rw_lock {

    acpi_mutex writer_mutex;

    acpi_mutex reader_mutex;

    u32 num_readers;

};

​