--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: utxface - External interfaces for "global" ACPI functions
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, 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.
+ */
+
+#include <acpi/acpi.h>
+#include <acpi/accommon.h>
+#include <acpi/acevents.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acdebug.h>
+#include <acpi/actables.h>
+
+#define _COMPONENT ACPI_UTILITIES
+ACPI_MODULE_NAME("utxface")
+
+#ifndef ACPI_ASL_COMPILER
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_initialize_subsystem
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Initializes all global variables. This is the first function
+ * called, so any early initialization belongs here.
+ *
+ ******************************************************************************/
+acpi_status __init acpi_initialize_subsystem(void)
+{
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(acpi_initialize_subsystem);
+
+ acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE;
+ ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace());
+
+ /* Initialize the OS-Dependent layer */
+
+ status = acpi_os_initialize();
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization"));
+ return_ACPI_STATUS(status);
+ }
+
+ /* Initialize all globals used by the subsystem */
+
+ status = acpi_ut_init_globals();
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "During initialization of globals"));
+ return_ACPI_STATUS(status);
+ }
+
+ /* Create the default mutex objects */
+
+ status = acpi_ut_mutex_initialize();
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "During Global Mutex creation"));
+ return_ACPI_STATUS(status);
+ }
+
+ /*
+ * Initialize the namespace manager and
+ * the root of the namespace tree
+ */
+ status = acpi_ns_root_initialize();
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "During Namespace initialization"));
+ return_ACPI_STATUS(status);
+ }
+
+ /* If configured, initialize the AML debugger */
+
+ ACPI_DEBUGGER_EXEC(status = acpi_db_initialize());
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_enable_subsystem
+ *
+ * PARAMETERS: Flags - Init/enable Options
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Completes the subsystem initialization including hardware.
+ * Puts system into ACPI mode if it isn't already.
+ *
+ ******************************************************************************/
+acpi_status acpi_enable_subsystem(u32 flags)
+{
+ acpi_status status = AE_OK;
+
+ ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
+
+ /* Enable ACPI mode */
+
+ if (!(flags & ACPI_NO_ACPI_ENABLE)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "[Init] Going into ACPI mode\n"));
+
+ acpi_gbl_original_mode = acpi_hw_get_mode();
+
+ status = acpi_enable();
+ if (ACPI_FAILURE(status)) {
+ ACPI_WARNING((AE_INFO, "AcpiEnable failed"));
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ /*
+ * Obtain a permanent mapping for the FACS. This is required for the
+ * Global Lock and the Firmware Waking Vector
+ */
+ status = acpi_tb_initialize_facs();
+ if (ACPI_FAILURE(status)) {
+ ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
+ return_ACPI_STATUS(status);
+ }
+
+ /*
+ * Install the default op_region handlers. These are installed unless
+ * other handlers have already been installed via the
+ * install_address_space_handler interface.
+ */
+ if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "[Init] Installing default address space handlers\n"));
+
+ status = acpi_ev_install_region_handlers();
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ /*
+ * Initialize ACPI Event handling (Fixed and General Purpose)
+ *
+ * Note1: We must have the hardware and events initialized before we can
+ * execute any control methods safely. Any control method can require
+ * ACPI hardware support, so the hardware must be fully initialized before
+ * any method execution!
+ *
+ * Note2: Fixed events are initialized and enabled here. GPEs are
+ * initialized, but cannot be enabled until after the hardware is
+ * completely initialized (SCI and global_lock activated)
+ */
+ if (!(flags & ACPI_NO_EVENT_INIT)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "[Init] Initializing ACPI events\n"));
+
+ status = acpi_ev_initialize_events();
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ /*
+ * Install the SCI handler and Global Lock handler. This completes the
+ * hardware initialization.
+ */
+ if (!(flags & ACPI_NO_HANDLER_INIT)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "[Init] Installing SCI/GL handlers\n"));
+
+ status = acpi_ev_install_xrupt_handlers();
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_enable_subsystem)
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_initialize_objects
+ *
+ * PARAMETERS: Flags - Init/enable Options
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Completes namespace initialization by initializing device
+ * objects and executing AML code for Regions, buffers, etc.
+ *
+ ******************************************************************************/
+acpi_status acpi_initialize_objects(u32 flags)
+{
+ acpi_status status = AE_OK;
+
+ ACPI_FUNCTION_TRACE(acpi_initialize_objects);
+
+ /*
+ * Run all _REG methods
+ *
+ * Note: Any objects accessed by the _REG methods will be automatically
+ * initialized, even if they contain executable AML (see the call to
+ * acpi_ns_initialize_objects below).
+ */
+ if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "[Init] Executing _REG OpRegion methods\n"));
+
+ status = acpi_ev_initialize_op_regions();
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ /*
+ * Initialize the objects that remain uninitialized. This runs the
+ * executable AML that may be part of the declaration of these objects:
+ * operation_regions, buffer_fields, Buffers, and Packages.
+ */
+ if (!(flags & ACPI_NO_OBJECT_INIT)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "[Init] Completing Initialization of ACPI Objects\n"));
+
+ status = acpi_ns_initialize_objects();
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ /*
+ * Initialize all device objects in the namespace. This runs the device
+ * _STA and _INI methods.
+ */
+ if (!(flags & ACPI_NO_DEVICE_INIT)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "[Init] Initializing ACPI Devices\n"));
+
+ status = acpi_ns_initialize_devices();
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ /*
+ * Complete the GPE initialization for the GPE blocks defined in the FADT
+ * (GPE block 0 and 1).
+ *
+ * Note1: This is where the _PRW methods are executed for the GPEs. These
+ * methods can only be executed after the SCI and Global Lock handlers are
+ * installed and initialized.
+ *
+ * Note2: Currently, there seems to be no need to run the _REG methods
+ * before execution of the _PRW methods and enabling of the GPEs.
+ */
+ if (!(flags & ACPI_NO_EVENT_INIT)) {
+ status = acpi_ev_install_fadt_gpes();
+ if (ACPI_FAILURE(status))
+ return (status);
+ }
+
+ /*
+ * Empty the caches (delete the cached objects) on the assumption that
+ * the table load filled them up more than they will be at runtime --
+ * thus wasting non-paged memory.
+ */
+ status = acpi_purge_cached_objects();
+
+ acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK;
+ return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_initialize_objects)
+
+#endif
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_terminate
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Shutdown the ACPI subsystem. Release all resources.
+ *
+ ******************************************************************************/
+acpi_status acpi_terminate(void)
+{
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(acpi_terminate);
+
+ /* Terminate the AML Debugger if present */
+
+ ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE);
+
+ /* Shutdown and free all resources */
+
+ acpi_ut_subsystem_shutdown();
+
+ /* Free the mutex objects */
+
+ acpi_ut_mutex_terminate();
+
+#ifdef ACPI_DEBUGGER
+
+ /* Shut down the debugger */
+
+ acpi_db_terminate();
+#endif
+
+ /* Now we can shutdown the OS-dependent layer */
+
+ status = acpi_os_terminate();
+ return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_terminate)
+#ifndef ACPI_ASL_COMPILER
+#ifdef ACPI_FUTURE_USAGE
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_subsystem_status
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status of the ACPI subsystem
+ *
+ * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
+ * before making any other calls, to ensure the subsystem
+ * initialized successfully.
+ *
+ ******************************************************************************/
+acpi_status acpi_subsystem_status(void)
+{
+
+ if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) {
+ return (AE_OK);
+ } else {
+ return (AE_ERROR);
+ }
+}
+
+ACPI_EXPORT_SYMBOL(acpi_subsystem_status)
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_get_system_info
+ *
+ * PARAMETERS: out_buffer - A buffer to receive the resources for the
+ * device
+ *
+ * RETURN: Status - the status of the call
+ *
+ * DESCRIPTION: This function is called to get information about the current
+ * state of the ACPI subsystem. It will return system information
+ * in the out_buffer.
+ *
+ * If the function fails an appropriate status will be returned
+ * and the value of out_buffer is undefined.
+ *
+ ******************************************************************************/
+acpi_status acpi_get_system_info(struct acpi_buffer * out_buffer)
+{
+ struct acpi_system_info *info_ptr;
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(acpi_get_system_info);
+
+ /* Parameter validation */
+
+ status = acpi_ut_validate_buffer(out_buffer);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* Validate/Allocate/Clear caller buffer */
+
+ status =
+ acpi_ut_initialize_buffer(out_buffer,
+ sizeof(struct acpi_system_info));
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /*
+ * Populate the return buffer
+ */
+ info_ptr = (struct acpi_system_info *)out_buffer->pointer;
+
+ info_ptr->acpi_ca_version = ACPI_CA_VERSION;
+
+ /* System flags (ACPI capabilities) */
+
+ info_ptr->flags = ACPI_SYS_MODE_ACPI;
+
+ /* Timer resolution - 24 or 32 bits */
+
+ if (acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) {
+ info_ptr->timer_resolution = 24;
+ } else {
+ info_ptr->timer_resolution = 32;
+ }
+
+ /* Clear the reserved fields */
+
+ info_ptr->reserved1 = 0;
+ info_ptr->reserved2 = 0;
+
+ /* Current debug levels */
+
+ info_ptr->debug_layer = acpi_dbg_layer;
+ info_ptr->debug_level = acpi_dbg_level;
+
+ return_ACPI_STATUS(AE_OK);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_get_system_info)
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_install_initialization_handler
+ *
+ * PARAMETERS: Handler - Callback procedure
+ * Function - Not (currently) used, see below
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Install an initialization handler
+ *
+ * TBD: When a second function is added, must save the Function also.
+ *
+ ****************************************************************************/
+acpi_status
+acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
+{
+
+ if (!handler) {
+ return (AE_BAD_PARAMETER);
+ }
+
+ if (acpi_gbl_init_handler) {
+ return (AE_ALREADY_EXISTS);
+ }
+
+ acpi_gbl_init_handler = handler;
+ return AE_OK;
+}
+
+ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler)
+#endif /* ACPI_FUTURE_USAGE */
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_purge_cached_objects
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Empty all caches (delete the cached objects)
+ *
+ ****************************************************************************/
+acpi_status acpi_purge_cached_objects(void)
+{
+ ACPI_FUNCTION_TRACE(acpi_purge_cached_objects);
+
+ (void)acpi_os_purge_cache(acpi_gbl_state_cache);
+ (void)acpi_os_purge_cache(acpi_gbl_operand_cache);
+ (void)acpi_os_purge_cache(acpi_gbl_ps_node_cache);
+ (void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache);
+ return_ACPI_STATUS(AE_OK);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_purge_cached_objects)
+#endif
git.openpandora.org / pandora-kernel.git / blobdiff