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+/******************************************************************************
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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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+/*
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+ * Copyright (C) 2000 - 2012, 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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+
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+#include <linux/export.h>
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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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+
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+#define _COMPONENT ACPI_UTILITIES
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+ACPI_MODULE_NAME("utxfinit")
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+
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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 acpi_initialize_subsystem(void)
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+{
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+ acpi_status status;
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+
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+ ACPI_FUNCTION_TRACE(acpi_initialize_subsystem);
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+
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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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+
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+ /* Initialize the OS-Dependent layer */
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+
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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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+
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+ /* Initialize all globals used by the subsystem */
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+
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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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+
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+ /* Create the default mutex objects */
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+
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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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+ /*
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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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+
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+ /* Initialize the global OSI interfaces list with the static names */
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+
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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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+
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+ /* If configured, initialize the AML debugger */
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+
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+ ACPI_DEBUGGER_EXEC(status = acpi_db_initialize());
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+ return_ACPI_STATUS(status);
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+}
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+ACPI_EXPORT_SYMBOL(acpi_initialize_subsystem)
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+
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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 acpi_enable_subsystem(u32 flags)
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+{
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+ acpi_status status = AE_OK;
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+
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+ ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
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+
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+#if (!ACPI_REDUCED_HARDWARE)
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+
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+ /* Enable ACPI mode */
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+
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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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+
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+ acpi_gbl_original_mode = acpi_hw_get_mode();
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+
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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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+ /*
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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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+ 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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+#endif /* !ACPI_REDUCED_HARDWARE */
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+
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+ /*
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+ * Install the default op_region handlers. These are installed unless
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+ * other handlers have already been installed via the
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+ * install_address_space_handler interface.
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+ */
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+ if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
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+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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+ "[Init] Installing default address space handlers\n"));
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+
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+ status = acpi_ev_install_region_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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+#if (!ACPI_REDUCED_HARDWARE)
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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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+
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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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+ /*
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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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+
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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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+
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+ return_ACPI_STATUS(status);
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+}
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+ACPI_EXPORT_SYMBOL(acpi_enable_subsystem)
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+
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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 acpi_initialize_objects(u32 flags)
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+{
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+ acpi_status status = AE_OK;
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+
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+ ACPI_FUNCTION_TRACE(acpi_initialize_objects);
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+
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+ /*
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+ * Run all _REG methods
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+ *
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+ * Note: Any objects accessed by the _REG methods will be automatically
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+ * initialized, even if they contain executable AML (see the call to
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+ * acpi_ns_initialize_objects below).
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+ */
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+ if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
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+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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+ "[Init] Executing _REG OpRegion methods\n"));
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+
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+ status = acpi_ev_initialize_op_regions();
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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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+ * 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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+ acpi_ns_exec_module_code_list();
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+
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+ /*
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+ * Initialize the objects that remain uninitialized. This runs the
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+ * executable AML that may be part of the 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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+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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+ "[Init] Completing Initialization of ACPI Objects\n"));
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+
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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 objects in the namespace. This runs the device
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+ * _STA and _INI methods.
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+ */
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+ if (!(flags & ACPI_NO_DEVICE_INIT)) {
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+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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+ "[Init] Initializing ACPI Devices\n"));
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+
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+ status = acpi_ns_initialize_devices();
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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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+ * 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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+
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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(acpi_initialize_objects)
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Bob Moore