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linux/drivers/acpi/acpica/utglobal.c
Bob Moore ef09c4f578 ACPICA: Add mechanism to defer _REG methods for some installed handlers 
The memory/io/pci/dataTable regions must always be available. For
any user installed handlers for these spaces, defer execution
of _REG methods until acpi_enable_subsystem. This prevents any
chicken/egg problems and ensures that no methods are executed
until all of these regions are ready and available.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-02 19:38:06 -05:00

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/******************************************************************************
*
* Module Name: utglobal - Global variables for the ACPI subsystem
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, 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.
*/
#define DEFINE_ACPI_GLOBALS
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utglobal")
/*******************************************************************************
*
* 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 */
u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
/* Debug switch - layer (component) mask */
u32 acpi_dbg_layer = 0;
u32 acpi_gbl_nesting_level = 0;
/* Debugger globals */
u8 acpi_gbl_db_terminate_threads = FALSE;
u8 acpi_gbl_abort_method = FALSE;
u8 acpi_gbl_method_executing = FALSE;
/* System flags */
u32 acpi_gbl_startup_flags = 0;
/* System starts uninitialized */
u8 acpi_gbl_shutdown = TRUE;
const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
"\\_S0_",
"\\_S1_",
"\\_S2_",
"\\_S3_",
"\\_S4_",
"\\_S5_"
};
const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS] = {
"_S0W",
"_S1W",
"_S2W",
"_S3W",
"_S4W"
};
const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS] = {
"_S1D",
"_S2D",
"_S3D",
"_S4D"
};
/*******************************************************************************
*
* Namespace globals
*
******************************************************************************/
/*
* Predefined ACPI Names (Built-in to the Interpreter)
*
* NOTES:
* 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
* during the initialization sequence.
* 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
* perform a Notify() operation on it. 09/2010: Changed to type Device.
* This still allows notifies, but does not confuse host code that
* searches for valid thermal_zone objects.
*/
const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
{"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
{"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
{"_SB_", ACPI_TYPE_DEVICE, NULL},
{"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
{"_TZ_", ACPI_TYPE_DEVICE, NULL},
{"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
{"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
{"_GL_", ACPI_TYPE_MUTEX, (char *)1},
#if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
{"_OSI", ACPI_TYPE_METHOD, (char *)1},
#endif
/* Table terminator */
{NULL, ACPI_TYPE_ANY, NULL}
};
/******************************************************************************
*
* Event and Hardware globals
*
******************************************************************************/
struct 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_PCIEXP_WAKE_STATUS */ {ACPI_REGISTER_PM1_STATUS,
ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
ACPI_BITMASK_PCIEXP_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_PCIEXP_WAKE_DISABLE */ {ACPI_REGISTER_PM1_ENABLE,
ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
/* 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 */ {ACPI_REGISTER_PM1_CONTROL,
ACPI_BITPOSITION_SLEEP_TYPE,
ACPI_BITMASK_SLEEP_TYPE},
/* 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}
};
struct 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,
ACPI_BITMASK_RT_CLOCK_STATUS,
ACPI_BITMASK_RT_CLOCK_ENABLE},
};
/*******************************************************************************
*
* FUNCTION: acpi_ut_init_globals
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Init library globals. All globals that require specific
* initialization should be initialized here!
*
******************************************************************************/
acpi_status acpi_ut_init_globals(void)
{
acpi_status status;
u32 i;
ACPI_FUNCTION_TRACE(ut_init_globals);
/* Create all memory caches */
status = acpi_ut_create_caches();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Mutex locked flags */
for (i = 0; i < ACPI_NUM_MUTEX; i++) {
acpi_gbl_mutex_info[i].mutex = NULL;
acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
acpi_gbl_mutex_info[i].use_count = 0;
}
for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
acpi_gbl_owner_id_mask[i] = 0;
}
/* Last owner_iD is never valid */
acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
/* GPE support */
acpi_gbl_gpe_xrupt_list_head = NULL;
acpi_gbl_gpe_fadt_blocks[0] = NULL;
acpi_gbl_gpe_fadt_blocks[1] = NULL;
acpi_current_gpe_count = 0;
acpi_gbl_all_gpes_initialized = FALSE;
/* Global handlers */
acpi_gbl_system_notify.handler = NULL;
acpi_gbl_device_notify.handler = NULL;
acpi_gbl_exception_handler = NULL;
acpi_gbl_init_handler = NULL;
acpi_gbl_table_handler = NULL;
acpi_gbl_interface_handler = NULL;
acpi_gbl_global_event_handler = NULL;
/* Global Lock support */
acpi_gbl_global_lock_semaphore = NULL;
acpi_gbl_global_lock_mutex = NULL;
acpi_gbl_global_lock_acquired = FALSE;
acpi_gbl_global_lock_handle = 0;
acpi_gbl_global_lock_present = FALSE;
/* Miscellaneous variables */
acpi_gbl_DSDT = NULL;
acpi_gbl_cm_single_step = FALSE;
acpi_gbl_db_terminate_threads = FALSE;
acpi_gbl_shutdown = FALSE;
acpi_gbl_ns_lookup_count = 0;
acpi_gbl_ps_find_count = 0;
acpi_gbl_acpi_hardware_present = TRUE;
acpi_gbl_last_owner_id_index = 0;
acpi_gbl_next_owner_id_offset = 0;
acpi_gbl_trace_method_name = 0;
acpi_gbl_trace_dbg_level = 0;
acpi_gbl_trace_dbg_layer = 0;
acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
acpi_gbl_osi_data = 0;
acpi_gbl_osi_mutex = NULL;
acpi_gbl_reg_methods_executed = FALSE;
/* Hardware oriented */
acpi_gbl_events_initialized = FALSE;
acpi_gbl_system_awake_and_running = TRUE;
/* Namespace */
acpi_gbl_module_code_list = NULL;
acpi_gbl_root_node = NULL;
acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
acpi_gbl_root_node_struct.parent = NULL;
acpi_gbl_root_node_struct.child = NULL;
acpi_gbl_root_node_struct.peer = NULL;
acpi_gbl_root_node_struct.object = NULL;
#ifdef ACPI_DEBUG_OUTPUT
acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
#endif
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
acpi_gbl_display_final_mem_stats = FALSE;
#endif
return_ACPI_STATUS(AE_OK);
}
ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
ACPI_EXPORT_SYMBOL(acpi_dbg_level)
ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
ACPI_EXPORT_SYMBOL(acpi_current_gpe_count)
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