acglobal.h

xen 3.2.2 源码

/******************************************************************************
 *
 * Name: acglobal.h - Declarations for global variables
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2005, R. Byron Moore
 * 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 __ACGLOBAL_H__
#define __ACGLOBAL_H__


/*
 * Ensure that the globals are actually defined and initialized only once.
 *
 * The use of these macros allows a single list of globals (here) in order
 * to simplify maintenance of the code.
 */
#ifdef DEFINE_ACPI_GLOBALS
#define ACPI_EXTERN
#define ACPI_INIT_GLOBAL(a,b) a=b
#else
#define ACPI_EXTERN extern
#define ACPI_INIT_GLOBAL(a,b) a
#endif

/*
 * Keep local copies of these FADT-based registers.  NOTE: These globals
 * are first in this file for alignment reasons on 64-bit systems.
 */
ACPI_EXTERN struct acpi_generic_address         acpi_gbl_xpm1a_enable;
ACPI_EXTERN struct acpi_generic_address         acpi_gbl_xpm1b_enable;


/*****************************************************************************
 *
 * Debug support
 *
 ****************************************************************************/

/* Runtime configuration of debug print levels */

extern      u32                                 acpi_dbg_level;
extern      u32                                 acpi_dbg_layer;

/* Procedure nesting level for debug output */

extern      u32                                 acpi_gbl_nesting_level;


/*****************************************************************************
 *
 * Runtime configuration (static defaults that can be overriden at runtime)
 *
 ****************************************************************************/

/*
 * Enable "slack" in the AML interpreter?  Default is FALSE, and the
 * interpreter strictly follows the ACPI specification.  Setting to TRUE
 * allows the interpreter to forgive certain bad AML constructs.  Currently:
 * 1) Allow "implicit return" of last value in a control method
 * 2) Allow access beyond end of operation region
 * 3) Allow access to uninitialized locals/args (auto-init to integer 0)
 * 4) Allow ANY object type to be a source operand for the Store() operator
 */
ACPI_EXTERN u8       ACPI_INIT_GLOBAL (acpi_gbl_enable_interpreter_slack, FALSE);

/*
 * Automatically serialize ALL control methods? Default is FALSE, meaning
 * to use the Serialized/not_serialized method flags on a per method basis.
 * Only change this if the ASL code is poorly written and cannot handle
 * reentrancy even though methods are marked "not_serialized".
 */
ACPI_EXTERN u8       ACPI_INIT_GLOBAL (acpi_gbl_all_methods_serialized, FALSE);

/*
 * Create the predefined _OSI method in the namespace? Default is TRUE
 * because ACPI CA is fully compatible with other ACPI implementations.
 * Changing this will revert ACPI CA (and machine ASL) to pre-OSI behavior.
 */
ACPI_EXTERN u8       ACPI_INIT_GLOBAL (acpi_gbl_create_osi_method, TRUE);

/*
 * Disable wakeup GPEs during runtime? Default is TRUE because WAKE and
 * RUNTIME GPEs should never be shared, and WAKE GPEs should typically only
 * be enabled just before going to sleep.
 */
ACPI_EXTERN u8       ACPI_INIT_GLOBAL (acpi_gbl_leave_wake_gpes_disabled, TRUE);


/*****************************************************************************
 *
 * ACPI Table globals
 *
 ****************************************************************************/

/*
 * Table pointers.
 * Although these pointers are somewhat redundant with the global acpi_table,
 * they are convenient because they are typed pointers.
 *
 * These tables are single-table only; meaning that there can be at most one
 * of each in the system.  Each global points to the actual table.
 */
ACPI_EXTERN u32                                 acpi_gbl_table_flags;
ACPI_EXTERN u32                                 acpi_gbl_rsdt_table_count;
ACPI_EXTERN struct rsdp_descriptor             *acpi_gbl_RSDP;
ACPI_EXTERN XSDT_DESCRIPTOR            *acpi_gbl_XSDT;
ACPI_EXTERN FADT_DESCRIPTOR            *acpi_gbl_FADT;
ACPI_EXTERN struct acpi_table_header           *acpi_gbl_DSDT;
ACPI_EXTERN FACS_DESCRIPTOR            *acpi_gbl_FACS;
ACPI_EXTERN struct acpi_common_facs             acpi_gbl_common_fACS;
/*
 * Since there may be multiple SSDTs and PSDTS, a single pointer is not
 * sufficient; Therefore, there isn't one!
 */


/*
 * Handle both ACPI 1.0 and ACPI 2.0 Integer widths
 * If we are running a method that exists in a 32-bit ACPI table.
 * Use only 32 bits of the Integer for conversion.
 */
ACPI_EXTERN u8                                  acpi_gbl_integer_bit_width;
ACPI_EXTERN u8                                  acpi_gbl_integer_byte_width;
ACPI_EXTERN u8                                  acpi_gbl_integer_nybble_width;

/*
 * ACPI Table info arrays
 */
extern      struct acpi_table_list              acpi_gbl_table_lists[NUM_ACPI_TABLE_TYPES];
extern      struct acpi_table_support           acpi_gbl_table_data[NUM_ACPI_TABLE_TYPES];

/*
 * Predefined mutex objects.  This array contains the
 * actual OS mutex handles, indexed by the local ACPI_MUTEX_HANDLEs.
 * (The table maps local handles to the real OS handles)
 */
ACPI_EXTERN struct acpi_mutex_info              acpi_gbl_mutex_info[NUM_MUTEX];


/*****************************************************************************
 *
 * Miscellaneous globals