308 lines
9.4 KiB
C
308 lines
9.4 KiB
C
/******************************************************************************
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*
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* Module Name: utxfinit - External interfaces for ACPICA initialization
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2016, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#define EXPORT_ACPI_INTERFACES
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#include "acdebug.h"
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#include "actables.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utxfinit")
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/* For acpi_exec only */
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void ae_do_object_overrides(void);
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/*******************************************************************************
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*
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* FUNCTION: acpi_initialize_subsystem
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initializes all global variables. This is the first function
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* called, so any early initialization belongs here.
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*
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******************************************************************************/
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acpi_status __init acpi_initialize_subsystem(void)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_initialize_subsystem);
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acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE;
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ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace());
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/* Initialize the OS-Dependent layer */
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status = acpi_os_initialize();
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if (ACPI_FAILURE(status)) {
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ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization"));
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return_ACPI_STATUS(status);
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}
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/* Initialize all globals used by the subsystem */
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status = acpi_ut_init_globals();
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if (ACPI_FAILURE(status)) {
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ACPI_EXCEPTION((AE_INFO, status,
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"During initialization of globals"));
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return_ACPI_STATUS(status);
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}
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/* Create the default mutex objects */
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status = acpi_ut_mutex_initialize();
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if (ACPI_FAILURE(status)) {
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ACPI_EXCEPTION((AE_INFO, status,
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"During Global Mutex creation"));
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return_ACPI_STATUS(status);
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}
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/*
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* Initialize the namespace manager and
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* the root of the namespace tree
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*/
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status = acpi_ns_root_initialize();
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if (ACPI_FAILURE(status)) {
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ACPI_EXCEPTION((AE_INFO, status,
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"During Namespace initialization"));
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return_ACPI_STATUS(status);
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}
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/* Initialize the global OSI interfaces list with the static names */
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status = acpi_ut_initialize_interfaces();
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if (ACPI_FAILURE(status)) {
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ACPI_EXCEPTION((AE_INFO, status,
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"During OSI interfaces initialization"));
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return_ACPI_STATUS(status);
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}
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return_ACPI_STATUS(AE_OK);
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}
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ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_subsystem)
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/*******************************************************************************
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*
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* FUNCTION: acpi_enable_subsystem
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*
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* PARAMETERS: flags - Init/enable Options
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*
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* RETURN: Status
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*
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* DESCRIPTION: Completes the subsystem initialization including hardware.
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* Puts system into ACPI mode if it isn't already.
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*
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******************************************************************************/
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acpi_status __init acpi_enable_subsystem(u32 flags)
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{
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
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/*
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* The early initialization phase is complete. The namespace is loaded,
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* and we can now support address spaces other than Memory, I/O, and
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* PCI_Config.
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*/
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acpi_gbl_early_initialization = FALSE;
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#if (!ACPI_REDUCED_HARDWARE)
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/* Enable ACPI mode */
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if (!(flags & ACPI_NO_ACPI_ENABLE)) {
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"[Init] Going into ACPI mode\n"));
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acpi_gbl_original_mode = acpi_hw_get_mode();
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status = acpi_enable();
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if (ACPI_FAILURE(status)) {
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ACPI_WARNING((AE_INFO, "AcpiEnable failed"));
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return_ACPI_STATUS(status);
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}
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}
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/*
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* Obtain a permanent mapping for the FACS. This is required for the
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* Global Lock and the Firmware Waking Vector
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*/
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if (!(flags & ACPI_NO_FACS_INIT)) {
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status = acpi_tb_initialize_facs();
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if (ACPI_FAILURE(status)) {
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ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
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return_ACPI_STATUS(status);
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}
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}
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/*
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* Initialize ACPI Event handling (Fixed and General Purpose)
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*
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* Note1: We must have the hardware and events initialized before we can
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* execute any control methods safely. Any control method can require
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* ACPI hardware support, so the hardware must be fully initialized before
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* any method execution!
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*
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* Note2: Fixed events are initialized and enabled here. GPEs are
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* initialized, but cannot be enabled until after the hardware is
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* completely initialized (SCI and global_lock activated) and the various
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* initialization control methods are run (_REG, _STA, _INI) on the
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* entire namespace.
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*/
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if (!(flags & ACPI_NO_EVENT_INIT)) {
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"[Init] Initializing ACPI events\n"));
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status = acpi_ev_initialize_events();
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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}
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/*
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* Install the SCI handler and Global Lock handler. This completes the
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* hardware initialization.
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*/
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if (!(flags & ACPI_NO_HANDLER_INIT)) {
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"[Init] Installing SCI/GL handlers\n"));
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status = acpi_ev_install_xrupt_handlers();
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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}
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#endif /* !ACPI_REDUCED_HARDWARE */
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL_INIT(acpi_enable_subsystem)
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/*******************************************************************************
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*
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* FUNCTION: acpi_initialize_objects
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*
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* PARAMETERS: flags - Init/enable Options
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*
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* RETURN: Status
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*
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* DESCRIPTION: Completes namespace initialization by initializing device
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* objects and executing AML code for Regions, buffers, etc.
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*
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******************************************************************************/
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acpi_status __init acpi_initialize_objects(u32 flags)
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{
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE(acpi_initialize_objects);
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#ifdef ACPI_EXEC_APP
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/*
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* This call implements the "initialization file" option for acpi_exec.
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* This is the precise point that we want to perform the overrides.
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*/
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ae_do_object_overrides();
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#endif
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/*
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* Execute any module-level code that was detected during the table load
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* phase. Although illegal since ACPI 2.0, there are many machines that
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* contain this type of code. Each block of detected executable AML code
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* outside of any control method is wrapped with a temporary control
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* method object and placed on a global list. The methods on this list
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* are executed below.
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*
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* This case executes the module-level code for all tables only after
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* all of the tables have been loaded. It is a legacy option and is
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* not compatible with other ACPI implementations. See acpi_ns_load_table.
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*/
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if (acpi_gbl_group_module_level_code) {
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acpi_ns_exec_module_code_list();
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/*
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* Initialize the objects that remain uninitialized. This
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* runs the executable AML that may be part of the
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* declaration of these objects:
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* operation_regions, buffer_fields, Buffers, and Packages.
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*/
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if (!(flags & ACPI_NO_OBJECT_INIT)) {
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status = acpi_ns_initialize_objects();
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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}
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}
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/*
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* Initialize all device/region objects in the namespace. This runs
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* the device _STA and _INI methods and region _REG methods.
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*/
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if (!(flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT))) {
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status = acpi_ns_initialize_devices(flags);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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}
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/*
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* Empty the caches (delete the cached objects) on the assumption that
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* the table load filled them up more than they will be at runtime --
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* thus wasting non-paged memory.
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*/
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status = acpi_purge_cached_objects();
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acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK;
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_objects)
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