utglobal.c

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/******************************************************************************
 *
 * Module Name: utglobal - Global variables for the ACPI subsystem
 *              $Revision: 155 $
 *
 *****************************************************************************/

/*
 *  Copyright (C) 2000 - 2002, R. Byron Moore
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#define DEFINE_ACPI_GLOBALS

#include "acpi.h"
#include "acevents.h"
#include "acnamesp.h"
#include "acinterp.h"
#include "amlcode.h"


#define _COMPONENT          ACPI_UTILITIES
	 ACPI_MODULE_NAME    ("utglobal")


/******************************************************************************
 *
 * FUNCTION:    Acpi_format_exception
 *
 * PARAMETERS:  Status       - The acpi_status code to be formatted
 *
 * RETURN:      A string containing the exception  text
 *
 * DESCRIPTION: This function translates an ACPI exception into an ASCII string.
 *
 ******************************************************************************/

const char *
acpi_format_exception (
	acpi_status             status)
{
	const char              *exception = "UNKNOWN_STATUS_CODE";
	acpi_status             sub_status;


	ACPI_FUNCTION_NAME ("Format_exception");


	sub_status = (status & ~AE_CODE_MASK);

	switch (status & AE_CODE_MASK) {
	case AE_CODE_ENVIRONMENTAL:

		if (sub_status <= AE_CODE_ENV_MAX) {
			exception = acpi_gbl_exception_names_env [sub_status];
			break;
		}
		goto unknown;

	case AE_CODE_PROGRAMMER:

		if (sub_status <= AE_CODE_PGM_MAX) {
			exception = acpi_gbl_exception_names_pgm [sub_status -1];
			break;
		}
		goto unknown;

	case AE_CODE_ACPI_TABLES:

		if (sub_status <= AE_CODE_TBL_MAX) {
			exception = acpi_gbl_exception_names_tbl [sub_status -1];
			break;
		}
		goto unknown;

	case AE_CODE_AML:

		if (sub_status <= AE_CODE_AML_MAX) {
			exception = acpi_gbl_exception_names_aml [sub_status -1];
			break;
		}
		goto unknown;

	case AE_CODE_CONTROL:

		if (sub_status <= AE_CODE_CTRL_MAX) {
			exception = acpi_gbl_exception_names_ctrl [sub_status -1];
			break;
		}
		goto unknown;

	default:
		goto unknown;
	}


	return ((const char *) exception);

unknown:

	ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown exception code: 0x%8.8X\n", status));
	return ((const char *) exception);
}


/******************************************************************************
 *
 * Static global variable initialization.
 *
 ******************************************************************************/

/*
 * We want the debug switches statically initialized so they
 * are already set when the debugger is entered.
 */

/* Debug switch - level and trace mask */

#ifdef ACPI_DEBUG
u32                         acpi_dbg_level = DEBUG_DEFAULT;
#else
u32                         acpi_dbg_level = NORMAL_DEFAULT;
#endif

/* Debug switch - layer (component) mask */

u32                         acpi_dbg_layer = ACPI_COMPONENT_DEFAULT;
u32                         acpi_gbl_nesting_level = 0;


/* Debugger globals */

u8                          acpi_gbl_db_terminate_threads = FALSE;
u8                          acpi_gbl_method_executing = FALSE;

/* System flags */

u32                         acpi_gbl_startup_flags = 0;

/* System starts uninitialized */

u8                          acpi_gbl_shutdown = TRUE;

const u8                    acpi_gbl_decode_to8bit [8] = {1,2,4,8,16,32,64,128};

const NATIVE_CHAR           *acpi_gbl_db_sleep_states[ACPI_NUM_SLEEP_STATES] = {
			  "\\_S0_","\\_S1_","\\_S2_","\\_S3_",
			  "\\_S4_","\\_S5_","\\_S4B"};


/******************************************************************************
 *
 * Namespace globals
 *
 ******************************************************************************/


/*
 * Names built-in to the interpreter
 *
 * Initial values are currently supported only for types String and Number.
 * To avoid type punning, both are specified as strings in this table.
 *
 * NOTES:
 * 1) _SB_ is defined to be a device to allow _SB_/_INI to be run
 *    during the initialization sequence.
 */

const acpi_predefined_names     acpi_gbl_pre_defined_names[] =
{ {"_GPE",    INTERNAL_TYPE_DEF_ANY},
	{"_PR_",    INTERNAL_TYPE_DEF_ANY},
	{"_SB_",    ACPI_TYPE_DEVICE},
	{"_SI_",    INTERNAL_TYPE_DEF_ANY},
	{"_TZ_",    INTERNAL_TYPE_DEF_ANY},
	{"_REV",    ACPI_TYPE_INTEGER,          "2"},
	{"_OS_",    ACPI_TYPE_STRING,           ACPI_OS_NAME},
	{"_GL_",    ACPI_TYPE_MUTEX,            "0"},
	{NULL,      ACPI_TYPE_ANY}              /* Table terminator */
};


/*
 * Properties of the ACPI Object Types, both internal and external.
 *
 * Elements of Acpi_ns_properties are bit significant
 * and the table is indexed by values of acpi_object_type
 */

const u8                        acpi_gbl_ns_properties[] =
{
	ACPI_NS_NORMAL,                     /* 00 Any              */
	ACPI_NS_NORMAL,                     /* 01 Number           */
	ACPI_NS_NORMAL,                     /* 02 String           */
	ACPI_NS_NORMAL,                     /* 03 Buffer           */
	ACPI_NS_NORMAL,                     /* 04 Package          */
	ACPI_NS_NORMAL,                     /* 05 Field_unit       */
	ACPI_NS_NEWSCOPE,                   /* 06 Device           */
	ACPI_NS_NORMAL,                     /* 07 Event            */
	ACPI_NS_NEWSCOPE,                   /* 08 Method           */
	ACPI_NS_NORMAL,                     /* 09 Mutex            */
	ACPI_NS_NORMAL,                     /* 10 Region           */
	ACPI_NS_NEWSCOPE,                   /* 11 Power            */
	ACPI_NS_NEWSCOPE,                   /* 12 Processor        */
	ACPI_NS_NEWSCOPE,                   /* 13 Thermal          */
	ACPI_NS_NORMAL,                     /* 14 Buffer_field     */
	ACPI_NS_NORMAL,                     /* 15 Ddb_handle       */
	ACPI_NS_NORMAL,                     /* 16 Debug Object     */
	ACPI_NS_NORMAL,                     /* 17 Def_field        */
	ACPI_NS_NORMAL,                     /* 18 Bank_field       */
	ACPI_NS_NORMAL,                     /* 19 Index_field      */
	ACPI_NS_NORMAL,                     /* 20 Reference        */
	ACPI_NS_NORMAL,                     /* 21 Alias            */
	ACPI_NS_NORMAL,                     /* 22 Notify           */
	ACPI_NS_NORMAL,                     /* 23 Address Handler  */
	ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,   /* 24 Resource Desc    */
	ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,   /* 25 Resource Field   */
	ACPI_NS_NORMAL,                     /* 26 Def_field_defn   */
	ACPI_NS_NORMAL,                     /* 27 Bank_field_defn  */
	ACPI_NS_NORMAL,                     /* 28 Index_field_defn */
	ACPI_NS_NORMAL,                     /* 29 If               */
	ACPI_NS_NORMAL,                     /* 30 Else             */
	ACPI_NS_NORMAL,                     /* 31 While            */
	ACPI_NS_NEWSCOPE,                   /* 32 Scope            */
	ACPI_NS_LOCAL,                      /* 33 Def_any          */
	ACPI_NS_NORMAL,                     /* 34 Extra            */
	ACPI_NS_NORMAL,                     /* 35 Data             */
	ACPI_NS_NORMAL                      /* 36 Invalid          */
};


/* Hex to ASCII conversion table */

const NATIVE_CHAR           acpi_gbl_hex_to_ascii[] =
			  {'0','1','2','3','4','5','6','7',
			  '8','9','A','B','C','D','E','F'};

/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_hex_to_ascii_char
 *
 * PARAMETERS:  Integer             - Contains the hex digit
 *              Position            - bit position of the digit within the
 *                                    integer
 *
 * RETURN:      Ascii character
 *
 * DESCRIPTION: Convert a hex digit to an ascii character
 *
 ****************************************************************************/

u8
acpi_ut_hex_to_ascii_char (
	acpi_integer            integer,
	u32                     position)
{

	return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
}


/******************************************************************************
 *
 * Table name globals
 *
 * NOTE: This table includes ONLY the ACPI tables that the subsystem consumes.
 * it is NOT an exhaustive list of all possible ACPI tables.  All ACPI tables
 * that are not used by the subsystem are simply ignored.
 *
 * Do NOT add any table to this list that is not consumed directly by this
 * subsystem.
 *
 ******************************************************************************/


acpi_table_desc             acpi_gbl_acpi_tables[NUM_ACPI_TABLES];


ACPI_TABLE_SUPPORT          acpi_gbl_acpi_table_data[NUM_ACPI_TABLES] =
{
	/***********    Name,   Signature, Global typed pointer     Signature size,      How many allowed?,    Contains valid AML? */

	/* RSDP 0 */ {RSDP_NAME, RSDP_SIG, NULL,                    sizeof (RSDP_SIG)-1, ACPI_TABLE_SINGLE},
	/* DSDT 1 */ {DSDT_SIG,  DSDT_SIG, (void **) &acpi_gbl_DSDT, sizeof (DSDT_SIG)-1, ACPI_TABLE_SINGLE  | ACPI_TABLE_EXECUTABLE},
	/* FADT 2 */ {FADT_SIG,  FADT_SIG, (void **) &acpi_gbl_FADT, sizeof (FADT_SIG)-1, ACPI_TABLE_SINGLE},
	/* FACS 3 */ {FACS_SIG,  FACS_SIG, (void **) &acpi_gbl_FACS, sizeof (FACS_SIG)-1, ACPI_TABLE_SINGLE},
	/* PSDT 4 */ {PSDT_SIG,  PSDT_SIG, NULL,                    sizeof (PSDT_SIG)-1, ACPI_TABLE_MULTIPLE | ACPI_TABLE_EXECUTABLE},
	/* SSDT 5 */ {SSDT_SIG,  SSDT_SIG, NULL,                    sizeof (SSDT_SIG)-1, ACPI_TABLE_MULTIPLE | ACPI_TABLE_EXECUTABLE},
	/* XSDT 6 */ {XSDT_SIG,  XSDT_SIG, NULL,                    sizeof (RSDT_SIG)-1, ACPI_TABLE_SINGLE},
};


/******************************************************************************
 *
 * Event and Hardware globals
 *
 ******************************************************************************/

ACPI_BIT_REGISTER_INFO      acpi_gbl_bit_register_info[ACPI_NUM_BITREG] =
{
	/* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */

	/* ACPI_BITREG_TIMER_STATUS         */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_TIMER_STATUS,          ACPI_BITMASK_TIMER_STATUS},
	/* ACPI_BITREG_BUS_MASTER_STATUS    */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_BUS_MASTER_STATUS,     ACPI_BITMASK_BUS_MASTER_STATUS},
	/* ACPI_BITREG_GLOBAL_LOCK_STATUS   */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,    ACPI_BITMASK_GLOBAL_LOCK_STATUS},
	/* ACPI_BITREG_POWER_BUTTON_STATUS  */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_POWER_BUTTON_STATUS,   ACPI_BITMASK_POWER_BUTTON_STATUS},
	/* ACPI_BITREG_SLEEP_BUTTON_STATUS  */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,   ACPI_BITMASK_SLEEP_BUTTON_STATUS},
	/* ACPI_BITREG_RT_CLOCK_STATUS      */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_RT_CLOCK_STATUS,       ACPI_BITMASK_RT_CLOCK_STATUS},
	/* ACPI_BITREG_WAKE_STATUS          */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_WAKE_STATUS,           ACPI_BITMASK_WAKE_STATUS},

	/* ACPI_BITREG_TIMER_ENABLE         */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_TIMER_ENABLE,          ACPI_BITMASK_TIMER_ENABLE},
	/* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,    ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
	/* ACPI_BITREG_POWER_BUTTON_ENABLE  */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_POWER_BUTTON_ENABLE,   ACPI_BITMASK_POWER_BUTTON_ENABLE},
	/* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,   ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
	/* ACPI_BITREG_RT_CLOCK_ENABLE      */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_RT_CLOCK_ENABLE,       ACPI_BITMASK_RT_CLOCK_ENABLE},
	/* ACPI_BITREG_WAKE_ENABLE          */   {ACPI_REGISTER_PM1_ENABLE,   0,                                      0},

	/* ACPI_BITREG_SCI_ENABLE           */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_SCI_ENABLE,            ACPI_BITMASK_SCI_ENABLE},
	/* ACPI_BITREG_BUS_MASTER_RLD       */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_BUS_MASTER_RLD,        ACPI_BITMASK_BUS_MASTER_RLD},
	/* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,   ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
	/* ACPI_BITREG_SLEEP_TYPE_A         */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_SLEEP_TYPE_X,          ACPI_BITMASK_SLEEP_TYPE_X},
	/* ACPI_BITREG_SLEEP_TYPE_B         */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_SLEEP_TYPE_X,          ACPI_BITMASK_SLEEP_TYPE_X},
	/* ACPI_BITREG_SLEEP_ENABLE         */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_SLEEP_ENABLE,          ACPI_BITMASK_SLEEP_ENABLE},

	/* ACPI_BITREG_ARB_DIS              */   {ACPI_REGISTER_PM2_CONTROL,  ACPI_BITPOSITION_ARB_DISABLE,           ACPI_BITMASK_ARB_DISABLE}
};


acpi_fixed_event_info       acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] =
{
	/* ACPI_EVENT_PMTIMER       */  {ACPI_BITREG_TIMER_STATUS,          ACPI_BITREG_TIMER_ENABLE,        ACPI_BITMASK_TIMER_STATUS,          ACPI_BITMASK_TIMER_ENABLE},
	/* ACPI_EVENT_GLOBAL        */  {ACPI_BITREG_GLOBAL_LOCK_STATUS,    ACPI_BITREG_GLOBAL_LOCK_ENABLE,  ACPI_BITMASK_GLOBAL_LOCK_STATUS,    ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
	/* ACPI_EVENT_POWER_BUTTON  */  {ACPI_BITREG_POWER_BUTTON_STATUS,   ACPI_BITREG_POWER_BUTTON_ENABLE, ACPI_BITMASK_POWER_BUTTON_STATUS,   ACPI_BITMASK_POWER_BUTTON_ENABLE},
	/* ACPI_EVENT_SLEEP_BUTTON  */  {ACPI_BITREG_SLEEP_BUTTON_STATUS,   ACPI_BITREG_SLEEP_BUTTON_ENABLE, ACPI_BITMASK_SLEEP_BUTTON_STATUS,   ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
	/* ACPI_EVENT_RTC           */  {ACPI_BITREG_RT_CLOCK_STATUS,       ACPI_BITREG_RT_CLOCK_ENABLE,     0,                                  0},
};

/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_get_region_name
 *
 * PARAMETERS:  None.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Translate a Space ID into a name string (Debug only)
 *
 ****************************************************************************/

/* Region type decoding */

const NATIVE_CHAR *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] =
{
	"System_memory",
	"System_iO",
	"PCIConfig",
	"Embedded_control",
	"SMBus",
	"CMOS",
	"PCIBar_target",
	"Data_table",
};


NATIVE_CHAR *
acpi_ut_get_region_name (
	u8                      space_id)
{

	if (space_id >= ACPI_USER_REGION_BEGIN)
	{
		return ("User_defined_region");
	}

	else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS)
	{
		return ("Invalid_space_iD");
	}

	return ((NATIVE_CHAR *) acpi_gbl_region_types[space_id]);
}


/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_get_event_name
 *
 * PARAMETERS:  None.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Translate a Event ID into a name string (Debug only)
 *
 ****************************************************************************/